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WO2006063402A1 - Therapeutic compositions based on extracts of plants from the genus plumeria (frangipani) - Google Patents

Therapeutic compositions based on extracts of plants from the genus plumeria (frangipani) Download PDF

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Publication number
WO2006063402A1
WO2006063402A1 PCT/AU2005/001897 AU2005001897W WO2006063402A1 WO 2006063402 A1 WO2006063402 A1 WO 2006063402A1 AU 2005001897 W AU2005001897 W AU 2005001897W WO 2006063402 A1 WO2006063402 A1 WO 2006063402A1
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WO
WIPO (PCT)
Prior art keywords
composition
extract
plant
plumeria
genus
Prior art date
Application number
PCT/AU2005/001897
Other languages
French (fr)
Inventor
Melvin Mackenzie Stewart
Original Assignee
Melvin Mackenzie Stewart
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2004907148A external-priority patent/AU2004907148A0/en
Application filed by Melvin Mackenzie Stewart filed Critical Melvin Mackenzie Stewart
Publication of WO2006063402A1 publication Critical patent/WO2006063402A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/28—Compounds containing heavy metals
    • A61K31/30—Copper compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
    • A61K31/19—Carboxylic acids, e.g. valproic acid
    • A61K31/192—Carboxylic acids, e.g. valproic acid having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid 
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
    • A61K36/18—Magnoliophyta (angiosperms)
    • A61K36/185—Magnoliopsida (dicotyledons)
    • A61K36/24—Apocynaceae (Dogbane family), e.g. plumeria or periwinkle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A61P17/02—Drugs for dermatological disorders for treating wounds, ulcers, burns, scars, keloids, or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/10—Antimycotics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/12—Antivirals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/12—Antivirals
    • A61P31/20—Antivirals for DNA viruses
    • A61P31/22—Antivirals for DNA viruses for herpes viruses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents

Definitions

  • This invention relates to therapeutic compositions and methods of treatment utilising extracts of plants from the genus Plumeria.
  • the invention relates to compositions and methods for treating skin cancers, fungal infections, viral infections, defects of the skin as well as other disorders.
  • Plumeria also known as Plumiera, common name Frangipani
  • Species of Plumeria include P. rubra, P. acutifolia, P. obtusa, P. obtusifolia, P. alba, P. bicolor, P. tricolour and P. jamesoni.
  • Plumeria Various uses for Plumeria have been described.
  • the specification of GB 2 104 383 describes anti- fouling compositions prepared from Plumeria, for use as algicides and barnicides in paints.
  • Hamburger et al J. Ethnopharmacol. 1991 JuI; 33(3):289-92
  • bioactive compounds prepared from P. rubra having molluscicidal, cytotoxic and anti-bacterial activities. Extracts of the flowers of Plumeria have also been used as fragrances in cosmetics.
  • extracts of Plumeria also have therapeutic properties and can be used in the prevention or treatment of skin cancers, fungal infections, viral infections, various skin defects and other afflictions.
  • compositions for preventing or treating skin cancer comprising an extract from a plant of the genus Plumeria.
  • a method for preventing or treating skin cancer in a subject comprising the step of administering to the subject a c ' omp ' bsiti ⁇ n comprising an extract from a plant of the genus Plumeria.
  • a third aspect of the present invention there is provided the use of an extract from a plant of the genus Plumeria in the preparation of a medicament for the prevention or treatment of skin cancer in a subject.
  • compositions for preventing or treating a fungal infection comprising an extract from a plant of the genus Plumeria.
  • a method for preventing or treating a fungal infection in a subject comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
  • an extract from a plant of the genus Plumeria in the preparation of a medicament for the prevention or treatment of a fungal infection in a subject.
  • compositions for preventing or treating a viral infection comprising an extract from a plant of the genus Plumeria.
  • a method for preventing or treating a viral infection in a subject comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
  • a ninth aspect of the present invention there is provided the use of an extract from a plant of the genus Plumeria in the preparation of a medicament for the prevention or treatment of a viral infection in a subject.
  • a composition for repairing or preventing a defect of the skin comprising an extract from a plant of the genus Plumeria.
  • a method of repairing or preventing a defect of the skin in a subject comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
  • an extract from a plant of the genus Plumeria in the preparation of a medicament for repairing or preventing a defect of the skin in a subject.
  • compositions for preventing or treating haemorrhoids comprising an extract from a plant of the genus Plumeria.
  • a fourteenth aspect of the present invention there is provided a method of preventing or treating haemorrhoids in a subject, said method comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
  • an extract from a plant of the genus Plumeria in the preparation of a medicament for preventing or treating haemorrhoids in a subject.
  • a sixteenth aspect of the present invention there is provided a method for preparing a composition comprising an extract from a plant of the genus Plumeria, the composition being as described in other aspects of the invention.
  • extracts of plants of the genus Plumeria have anti-cancer, antifungal and anti-viral activities as well as other therapeutic-properties;- Although the extract may be derived from any suitable species of the Plumeria genus (including P. rubra, P. acutifolia, P. obtusa, P. obtusifolia, P. alba, P. bicolor, P. tricolour and P. jamesoni), deciduous forms of Plumeria are preferred as they appear to have the highest activities.
  • the extract is derived from P. rubra.
  • the extract can be prepared from any suitable part or parts of the plant.
  • the extract can be prepared, for instance, from the branches, leaves, trunk, bark, milky sap (latex), flowers or roots of the plant.
  • the extract comprises milky sap collected from actively growing branches of the plant. Milky sap is exuded from the branches when bruised, cut or punctured. If necessary, the sap can be processed or stabilised in any suitable way.
  • the composition can be used to prevent or treat any suitable type of skin cancer.
  • the composition can, for instance, be used to prevent or treat squamous cell carcinoma, basal cell carcinoma, melanoma, Kaposi's sarcoma, cutaneous lymphoma, adnexal tumour and Merkel cell carcinoma.
  • the composition can also be used to prevent or treat precursors of skin cancer such as solar keratoses.
  • the composition can be used to prevent or treat any suitable type of fungal infection.
  • the composition is used to prevent or treat tinea (e.g. athlete's foot, jock itch, ringworm, deep nail bed infection) which is caused chiefly by species of Microsporum, Trichophyton, Candida and Epidermophyton.
  • the composition can be used to prevent or treat any suitable type of viral infection.
  • the composition is applied to sores, ulcers, lesions, blisters, cancers, inflammations, skin discolorations and other skin defects that are caused by a virus. Some of these are caused, for example, by herpes simplex virus 1 or 2 which primarily affect the mouth and genital areas. Human papillomavirus may cause carcinomas in genital areas.
  • the composition can be used to prevent or treat any suitable defect of the skin.
  • the skin defect may be, for example, an age spot, a benign- tumour, a -blister, a burn, chicken pox, a cold-sore, a- crack, cradle cap, dermatitis, diaper rash, eczema, a lesion, a mole, a papule, a pustule, a reddened area, rosacea, scaling, a stomatitis, an ulcer, a wound, or seborrhoeic keratosis.
  • compositions described above can be formulated as a pharmaceutical or a cosmeceutical.
  • Each composition can be administered to the subject in any suitable form in any suitable way.
  • the subject is a human or other mammal.
  • Each composition can be, for instance, administered topically in the form of a cream, foam, gel, milk, lotion, oil, ointment, paste, powder or solution.
  • the compound can be incorporated into a bandage or plaster.
  • each composition is applied topically as a cream at least once, but preferably twice, a day.
  • composition of the present invention can include one or more other active ingredients.
  • An active ingredient as defined herein, is a compound that provides therapeutic benefit to the subject.
  • the active ingredient can be, for instance, an antibiotic, antifungal, anti-inflammatory, anti-viral or wound healer.
  • Salicylic acid and paraffin are examples of such ingredients.
  • the composition further comprises the active ingredients benzoic acid and salicylic acid.
  • these ingredients have been used topically as an antifungal and keratolytic agent in the treatment of tinea pedis (commercially available as Whitfield's OintmentTM), the inventor has found synergy between the plant extract and one or more of the ingredients so as to more efficiently treat fungal infections.
  • composition of the present invention can further include one or more of the following types of ingredients: an adhesive, a base, a buffer, a carrier, a colourant, a diluent, a dispersing agent, an emollient, an emulsifier, an excipient, a fiexibiliser/plasticiser, fragrance, a gelling agent, a humectant, an insecticidal agent, a lubricant, a preservative, a skin conditioning agent, a skin protectant, a solubiliser, a stabilising agent, a sunscreen agent, a surfactant, a suspending agent, a textural modifier, a thickening agent, a viscosity increasing agent, and a waterproofing agent.
  • an adhesive a base, a buffer, a carrier, a colourant, a diluent, a dispersing agent, an emollient, an emulsifier, an excipient, a fiexibiliser/plasticiser,
  • Suitable organic, -oily- or aqueous bases, carriers, - diluents and -excipients are inert and physiologically acceptable and include, for example: bacteriostatic saline (saline containing benzyl alcohol), cetomacrogol, cetyl alcohol, glycerine, lanolin, petrolatum based creams, gels, saline, short chain alcohols and glycols (e.g. ethyl alcohol and propylene glycol), and water.
  • An emollient can help skin maintain a soft, smooth and pliable appearance.
  • the emollient can be, for example: acetyl arginine, acetylated lanolin, algae extract, almond oil, apricot kernel oil PEG-6 esters, avocado oil PEG-I l esters, bis-PEG-4 dimethicone, butoxyethyl stearate, C 18 -C 36 acid glycol ester, C 2 -Ci 3 alkyl lactate, caprylyl glycol, cetyl alcohol, cetyl esters, cetyl laurate, coconut oil PEG-IO esters, crodamol GTCC, di- Cj 2 -C 13 alkyl tartrate, diethyl sebacate, dihydrocholesteryl butyrate, dimethiconol, dimyristyl tartrate, disteareth-5 lauroyl glutamate, ethyl avocadate, ethylhexy
  • Either water in oil or oil in water emulsions can be used.
  • suitable surfactants and emulsifying agents include: non-ionic ethoxylated and non-ethoxylated surfactants, abietic acid, almond oil PEG, beeswax, butylglucoside caprate, C 18 -C 36 acid glycol ester, Cg-C 1S alkyl phosphate, caprylic/capric triglyceride PEG-4 esters, cetomacrogol, ceteareth-7, cetereth-20, cetyl phosphate, cetyl stearyl alcohol, corn oil PEG esters, DEA-cetyl phosphate, dextrin laurate, dilaureth-7 citrate, dimyristyl phosphate, glycereth-17 cocoate, glyceryl erucate, glycerol, glyceryl laurate, G.M.S.
  • PEG esters isosteareth-11 carboxylic acid, lecithin, lysolecithin, nonoxynol-9, octyldodeceth-20, palm glyceride, PEG diisostearate, PEG stearamine, poloxamines, polyglyceryls, potassium linoleate, PPGs, raffinose myristate, sodium caproyl lactylate, sodium caprylate, sodium cocoate, sodium isostearate, sodium tocopheryl phosphate, steareths, TEA-C 12 -C 13 pareth-3 sulfate, Ui-Ci 2 -C 15 pareth-6 phosphate, and trideceths.
  • a humectant can help maintain moisture levels in skin.
  • the humectant can be for example: acetyl arginine, algae extract, aloe barbadensis leaf extract, betaine, 2, 3-butanediol, chitosan lauroyl glycinate, diglycereth-7 malate, diglycerin, diglycol guanidine succinate, erythritol, fructose, glucose, glycerine, honey, hydrolyzed wheat protein/PEG-20 acetate copolymer, hydroxypropyltrimonium hyaluronate, inositol, lactitol, maltitol, maltose, mannitol, mannose, methoxy PEG, myristamidobutyl guanidine acetate, polyglyceryl sorbitol, potassium PCA, propylene glycol, sodium PCA, sorbitol, sucrose, and urea
  • Each composition can include one or more types of preservative.
  • a suitable preservative for example, can be: benzalkonium chloride, benzoic acid, benzothonium chloride, benzyl alcohol, 2- bromo-2-nitropropane-l,3-diol, bronopol, butylated hydroxyanisole, butylated hydroxytoluene, butyl paraben, chlorophene, chlorphenesin, diazolidinyl urea, DMDM hydantoin, ethyl paraben, formaldehyde-releasing preservative, hydroquinone, iodopropynyl butylcarbamate, imidazolidinyl urea, methyldibromo glutaronitrile, methylhydroquinone, methylisothiazolinone, methyl paraben, nitrosamines, o-cymen-5-ol, phenoxyethanol, propyl parab
  • a skin conditioning agent improves dry or damaged skin.
  • agents include: acetyl cysteine, N-acetyl dihydrosphingosine, acrylates/behenyl acrylate/dimethicone acrylate copolymer, adenosine, adenosine cyclic phosphate, adensosine phosphate, adenosine triphosphate, alanine, albumen, algae extract, allantoin and deriviatives, aloe barbadensis extracts, aluminum PCA, amyloglucosidase, arbutin, arginine, azulene, bromelain, buttermilk powder, butylene glycol, caffeine, calcium gluconate, capsaicin, carbocysteine, carnosine, beta-carotene, casein, catalase, cephalins, ceramides, chamomilla recutita (matricaria) flower extract,
  • a skin protectant protects injured or exposed skin or mucous membrane surfaces from harmful or irritating chemicals.
  • a skin protectant for example, includes: algae extract, allantoin, aluminium hydroxide, aluminium sulfate, betaine, camellia sinensis leaf extract, cerebrosides, dimethicone, glucuronolactone, glycerin, kaolin, lanolin, malt extract, mineral oil, petrolatum, potassium gluconate, and talc.
  • the sunscreen agent can absorb, reflect or scatter UV radiation in the wavelength range of about 290 to 400 nanometers.
  • Such agents include: benzophenone-3 (oxybenzone), benzophenone-4
  • thickening or viscosity increasing agents include: acrylamides copolymer, agarose, amylopectin, bentonite, calcium alginate, calcium carboxymethyl cellulose, carbomer, carboxymethyl chitin, castor oil derivatives, cellulose gum, cellulosic preparation, cetyl alcohol, cetostearyl alcohol, coconut oil, dextrin, gelatin, hydrogenated tallow, hydroxyethylcellulose, hydroxypropylcellulose, hydroxpropyl starch, inorganic thixotrope, magnesium alginate, methylcellulose, microcrystalline cellulose, modified clays, paraffin, pectin, various PEG's, polyacrylic acid, polymethacrylic acid, polyvinyl alcohol, quaternium ammonium compound of bentonite or zinc stearate, shea butter, various PPG's, "sodium acrylates copolymer, sodium- carrageenan, silicon dioxide, xanthum gum, and yeast beta-glucan
  • each composition comprises: about 25% volume/volume sap from a plant of the genus P ⁇ umeria; and a base having about 15% volume/volume Whitfield's OintmentTM pre-mixed with about 60% volume/volume either Vitamin E Cream or Sorbelene Cream.
  • the base has a low alcohol content.
  • Whitfield's OintmentTM can comprise 3 g/50 g benzoic acid and 1.5 g/50 g salicylic acid in a lanolin, petroleum jelly or other type of organic base. Whitfield's OintmentTM can be as manufactured by Gilseal Coy, Queensland, Australia or Biotech Pharmaceuticals, Queensland,
  • Vitamin E Cream can comprise tocopheryl acetate in an oily base. Vitamin E Cream can be as manufactured by Liberty Cosmetics, New South Wales, Australia.
  • Sorbelene Cream (being an emulsion) can comprise water, glycerine, cetamacrogol, liquid paraffin, cetyl stearyl alcohol, methyl paraben, propyl paraben and imidazolindinyl urea as manufactured by Amcal Chemists Ltd, Victoria, Australia, Jean Charles Professional Products, New South Wales, Australia or Lustra Labs., Victoria, Australia.
  • This example describes the preparation of a therapeutic cream comprising an extract of Plumeria rubra.
  • a green -tipped branch of a Plumeria rubra plant was punctured with a knife and 12-20 drops of the milky sap (latex) of the plant were collected in a container.
  • the sap was mixed with a base comprising about 15% volume/volume Whitfield's OintmentTM (manufactured by Gilseal Coy, Queensland, Australia or Biotech Pharmaceuticals, Queensland, Australia) pre-mixed with about 60% volume/volume either Vitamin E Cream (manufactured by Liberty Cosmetics, New South Wales, Australia) or Sorbelene Cream (manufactured by Amcal Chemists Ltd, Victoria, Australia, Jean Charles Professional Products, New South Wales, Australia or Lustra Labs., Victoria, Australia).
  • the volume of sap in the cream composition was about 25%.
  • Whitfield's OintmentTM typically comprises 3 g/50 g benzoic acid and 1.5 g/50 g salicylic acid in a lanolin or petroleum jelly (organic) base.
  • Vitamin E Cream typically comprises tocopheryl acetate in an oily base.
  • Sorbelene Cream (being an emulsion) typically comprises water, glycerine, cetamacrogol, liquid paraffin, cetyl stearyl alcohol, methyl paraben, propyl paraben and imidazolindinyl urea.
  • the latex Since the latex separates/coagulates on exposure to air, the latex should be mixed with the base as soon as possible.
  • One way of checking to see that there is sufficient latex in the composition is to place some of the composition between the forefinger and thumb. If there is insufficient latex in the composition, many fine latex-derived strands will not be evident when moving the thumb and forefinger away from one another.
  • Example 1 The cream as described in Example 1 has been proven effective for the treatment of various cancers and pre-cancers, including: tumours of advanced breast cancer, viral penile carcinoma, squamous cell carcinoma (nose, hand, chest, vagina, leg), melanoma (ear, back, chest, neck, face), solar keratoses (hand, nose) and basal cell carcinoma (ear, face, arm, leg).
  • tumours of advanced breast cancer including: tumours of advanced breast cancer, viral penile carcinoma, squamous cell carcinoma (nose, hand, chest, vagina, leg), melanoma (ear, back, chest, neck, face), solar keratoses (hand, nose) and basal cell carcinoma (ear, face, arm, leg).
  • the cream was applied to the skin cancer or cancer precursor once or twice a day. No adverse reactions were reported, the cream did not irritate the skin nor did it inflame the skin. On average, melanomas disappeared and were replaced by new healthy skin usually within three weeks. Solar keratoses, on average, disappeared and were replaced by new healthy skin usually within 10 days. On average, squamous cell carcinomas disappeared and were replaced by new healthy skin usually within two weeks.
  • Cancers have also been treated on the lower eyelids, face and back of the head, with the cancers usually disappearing within a matter of 2-3 weeks.
  • the cream also appeared to elicit an immune response (to have "memory") whereby newly appearing squamous cell carcinomas would disappear within a matter of days without requiring fresh application of the cream.
  • compositions for treating skin cancer include that the composition specifically targets cancerous cells as opposed to surrounding healthy cells (unlike radiotherapy and chemotherapy), invasive surgical procedures (cancer removal using liquid nitrogen or surgical incision) can be avoided, and cancers on generally inoperable parts of the body can be treated (e.g. cancers on the lower eyelids).
  • a punch specimen 3 mm in diameter and 2 mm in depth was taken of a lesion on a hand, and the specimen was embedded. Microscopic sections showed hyperkeratotic moderate to severely dysplastic solar keratosis in the punch specimen. Upon application of the cream twice daily for eight days, the lesion was confirmed by a doctor as having resolved.
  • a biopsy was taken of a lesion on a hand (a skin ellipse 7 x 2 x 2 mm with a slightly elevated cream area 2 mm).
  • the biopsy showed the lesion to be an early well differentiated squamous cell carcinoma in skin with solar degeneration.
  • the cream twice daily for less than three weeks the lesion was confirmed by a doctor as having resolved.
  • Example 1 The cream as described in Example 1 has been proven effective for the treatment of fungal conditions, including athlete's foot and ringworm.
  • Example 1 The cream as described in Example 1 has been proven effective for the treatment of sores, ulcers, lesions, blisters, cancers, inflammations and skin discolorations that are caused by a virus.
  • the cream was applied twice a day.
  • the cream was used to effectively treat conditions caused by herpes simplex virus in the mouth and genital areas. The conditions cleared up within 2-3 weeks.
  • the cream was also used to effectively treat carcinomas in genital areas caused by human papilloma virus. The carcinomas disappeared within 3 weeks.
  • Example 5 Treatment of Skin Defects and Other Conditions
  • the cream as described in Example 1 has been proven effective for the treatment of various skin defects and haemorrhoids.
  • the cream has been used to treat eczema, dermatitis, brown age spots, moles, burns and seborrhoeic keratoses.
  • the cream was applied once or twice a day. Eczema, dermatitis and brown age spots cleared up or improved usually within about seven days. Haemorrhoids were effectively treated within 2-3 weeks. Seborrhoeic keratoses (maxillary area) were effectively treated within about three weeks. In one instance, brown age spots (on the backs of hands) faded after about four weeks. A growing dark brown mole (on the side of a nose) dropped off in less than three weeks, leaving smooth healthy skin with no scar tissue at all.

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Abstract

A therapeutic composition for topical use comprising an extract from a plant of the genus Plumeria. The composition can be used for preventing and treating skin cancers, fungal infections, viral infections and haemorrhoids. The composition can also be used for repairing and preventing defects of the skin.

Description

THERAPEUTIC COMPSITIONS BASED ON EXTRACTS OF PLANTS FROM THE GENUS PLUMERIA (FRANGLPANI)
Field of the Invention
This invention relates to therapeutic compositions and methods of treatment utilising extracts of plants from the genus Plumeria. In particular, the invention relates to compositions and methods for treating skin cancers, fungal infections, viral infections, defects of the skin as well as other disorders.
Background of the Invention Plants of the genus Plumeria (also known as Plumiera, common name Frangipani) are found throughout tropical and sub-tropical regions of the world. Species of Plumeria include P. rubra, P. acutifolia, P. obtusa, P. obtusifolia, P. alba, P. bicolor, P. tricolour and P. jamesoni.
Various uses for Plumeria have been described. The specification of GB 2 104 383 describes anti- fouling compositions prepared from Plumeria, for use as algicides and barnicides in paints. Hamburger et al (J. Ethnopharmacol. 1991 JuI; 33(3):289-92) describe bioactive compounds prepared from P. rubra having molluscicidal, cytotoxic and anti-bacterial activities. Extracts of the flowers of Plumeria have also been used as fragrances in cosmetics.
Summary of the Invention
The present inventor has discovered that extracts of Plumeria also have therapeutic properties and can be used in the prevention or treatment of skin cancers, fungal infections, viral infections, various skin defects and other afflictions.
According to a first aspect of the present invention, there is provided a composition for preventing or treating skin cancer, said composition comprising an extract from a plant of the genus Plumeria.
According to a second aspect of the present invention, there is provided a method for preventing or treating skin cancer in a subject, said method comprising the step of administering to the subject a c'omp'bsitiόn comprising an extract from a plant of the genus Plumeria. According to a third aspect of the present invention, there is provided the use of an extract from a plant of the genus Plumeria in the preparation of a medicament for the prevention or treatment of skin cancer in a subject.
According to a fourth aspect of the present invention, there is provided a composition for preventing or treating a fungal infection, said composition comprising an extract from a plant of the genus Plumeria.
According to a fifth aspect of the present invention, there is provided a method for preventing or treating a fungal infection in a subject, said method comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
According to a sixth aspect of the present invention, there is provided the use of an extract from a plant of the genus Plumeria in the preparation of a medicament for the prevention or treatment of a fungal infection in a subject.
According to a seventh aspect of the present invention, there is provided a composition for preventing or treating a viral infection, said composition comprising an extract from a plant of the genus Plumeria.
According to an eighth aspect of the present invention, there is provided a method for preventing or treating a viral infection in a subject, said method comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
According to a ninth aspect of the present invention, there is provided the use of an extract from a plant of the genus Plumeria in the preparation of a medicament for the prevention or treatment of a viral infection in a subject.
According to a tenth aspect of the present invention, there is provided a composition for repairing or preventing a defect of the skin, said composition comprising an extract from a plant of the genus Plumeria. According to an eleventh aspect of the present invention, there is provided a method of repairing or preventing a defect of the skin in a subject, said method comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
According to a twelfth aspect of the present invention, there is provided the use of an extract from a plant of the genus Plumeria in the preparation of a medicament for repairing or preventing a defect of the skin in a subject.
According to a thirteenth aspect of the present invention, there is provided a composition for preventing or treating haemorrhoids, said composition comprising an extract from a plant of the genus Plumeria.
According to a fourteenth aspect of the present invention, there is provided a method of preventing or treating haemorrhoids in a subject, said method comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
According to a fifteenth aspect of the present invention, there is provided the use of an extract from a plant of the genus Plumeria in the preparation of a medicament for preventing or treating haemorrhoids in a subject.
According to a sixteenth aspect of the present invention, there is provided a method for preparing a composition comprising an extract from a plant of the genus Plumeria, the composition being as described in other aspects of the invention.
Detailed Description of the Invention
Other aspects and embodiments of the invention will become apparent from the following detailed description thereof.
The present inventor has discovered that extracts of plants of the genus Plumeria have anti-cancer, antifungal and anti-viral activities as well as other therapeutic-properties;- Although the extract may be derived from any suitable species of the Plumeria genus (including P. rubra, P. acutifolia, P. obtusa, P. obtusifolia, P. alba, P. bicolor, P. tricolour and P. jamesoni), deciduous forms of Plumeria are preferred as they appear to have the highest activities. Preferably, the extract is derived from P. rubra.
The extract can be prepared from any suitable part or parts of the plant. The extract can be prepared, for instance, from the branches, leaves, trunk, bark, milky sap (latex), flowers or roots of the plant. Preferably, the extract comprises milky sap collected from actively growing branches of the plant. Milky sap is exuded from the branches when bruised, cut or punctured. If necessary, the sap can be processed or stabilised in any suitable way.
With regard to the first, second and third aspects of the invention, the composition can be used to prevent or treat any suitable type of skin cancer. The composition can, for instance, be used to prevent or treat squamous cell carcinoma, basal cell carcinoma, melanoma, Kaposi's sarcoma, cutaneous lymphoma, adnexal tumour and Merkel cell carcinoma. The composition can also be used to prevent or treat precursors of skin cancer such as solar keratoses.
With regard to the fourth, fifth and sixth aspects of the invention, the composition can be used to prevent or treat any suitable type of fungal infection. Preferably, the composition is used to prevent or treat tinea (e.g. athlete's foot, jock itch, ringworm, deep nail bed infection) which is caused chiefly by species of Microsporum, Trichophyton, Candida and Epidermophyton.
With regard to the seventh, eighth and ninth aspects of the invention, the composition can be used to prevent or treat any suitable type of viral infection. Preferably, the composition is applied to sores, ulcers, lesions, blisters, cancers, inflammations, skin discolorations and other skin defects that are caused by a virus. Some of these are caused, for example, by herpes simplex virus 1 or 2 which primarily affect the mouth and genital areas. Human papillomavirus may cause carcinomas in genital areas.
With regard to the tenth, eleventh and twelfth aspects of the invention, the composition can be used to prevent or treat any suitable defect of the skin. The skin defect may be, for example, an age spot, a benign- tumour, a -blister, a burn, chicken pox, a cold-sore, a- crack, cradle cap, dermatitis, diaper rash, eczema, a lesion, a mole, a papule, a pustule, a reddened area, rosacea, scaling, a stomatitis, an ulcer, a wound, or seborrhoeic keratosis.
Each composition described above can be formulated as a pharmaceutical or a cosmeceutical. Each composition can be administered to the subject in any suitable form in any suitable way. Preferably, the subject is a human or other mammal.
Each composition can be, for instance, administered topically in the form of a cream, foam, gel, milk, lotion, oil, ointment, paste, powder or solution. The compound can be incorporated into a bandage or plaster. Preferably, each composition is applied topically as a cream at least once, but preferably twice, a day.
Each composition of the present invention can include one or more other active ingredients. An active ingredient, as defined herein, is a compound that provides therapeutic benefit to the subject. The active ingredient can be, for instance, an antibiotic, antifungal, anti-inflammatory, anti-viral or wound healer. Salicylic acid and paraffin are examples of such ingredients.
Preferably, the composition further comprises the active ingredients benzoic acid and salicylic acid. Although these ingredients have been used topically as an antifungal and keratolytic agent in the treatment of tinea pedis (commercially available as Whitfield's Ointment™), the inventor has found synergy between the plant extract and one or more of the ingredients so as to more efficiently treat fungal infections.
Each composition of the present invention can further include one or more of the following types of ingredients: an adhesive, a base, a buffer, a carrier, a colourant, a diluent, a dispersing agent, an emollient, an emulsifier, an excipient, a fiexibiliser/plasticiser, fragrance, a gelling agent, a humectant, an insecticidal agent, a lubricant, a preservative, a skin conditioning agent, a skin protectant, a solubiliser, a stabilising agent, a sunscreen agent, a surfactant, a suspending agent, a textural modifier, a thickening agent, a viscosity increasing agent, and a waterproofing agent.
-Suitable organic, -oily- or aqueous bases, carriers, - diluents and -excipients are inert and physiologically acceptable and include, for example: bacteriostatic saline (saline containing benzyl alcohol), cetomacrogol, cetyl alcohol, glycerine, lanolin, petrolatum based creams, gels, saline, short chain alcohols and glycols (e.g. ethyl alcohol and propylene glycol), and water.
An emollient can help skin maintain a soft, smooth and pliable appearance. The emollient can be, for example: acetyl arginine, acetylated lanolin, algae extract, almond oil, apricot kernel oil PEG-6 esters, avocado oil PEG-I l esters, bis-PEG-4 dimethicone, butoxyethyl stearate, C18-C36 acid glycol ester, C2-Ci3 alkyl lactate, caprylyl glycol, cetyl alcohol, cetyl esters, cetyl laurate, coconut oil PEG-IO esters, crodamol GTCC, di- Cj2-C13 alkyl tartrate, diethyl sebacate, dihydrocholesteryl butyrate, dimethiconol, dimyristyl tartrate, disteareth-5 lauroyl glutamate, ethyl avocadate, ethylhexyl myristate, fatty alcohol, glyceryl isostearates, glyceryl oleate, hexyldecyl stearate, hexyl isostearate, hydrogenated palm glycerides, hydrogenated soy glycerides, hydrogenated tallow glycerides, hydroxypropyl bisisostearamide MEA, isostearyl neopentanoate, isostearyl palmitate, isotridecyl isononanoate, laureth-2 acetate, lauryl polyglyceryl-6 cetearyl glycol ether, macadamia nut oil, methyl gluceth-20 benzoate, mineral oil, myreth-3 palmitate, octyldecanol, octyldodecanol, odontella aurita oil, 2-oleamido-l, 3 octadecanediol, palm glycerides, PEG avocado glycerides, PEG castor oil, PEG-22/dodecyl glycol copolymer, PEG shorea butter glycerides, phytol, raffinose, shea butter, silicone 200/350, stearyl citrate, sunflower seed oil glycerides, and tocopheryl glucoside.
Either water in oil or oil in water emulsions can be used. Examples of suitable surfactants and emulsifying agents include: non-ionic ethoxylated and non-ethoxylated surfactants, abietic acid, almond oil PEG, beeswax, butylglucoside caprate, C18-C36 acid glycol ester, Cg-C1S alkyl phosphate, caprylic/capric triglyceride PEG-4 esters, cetomacrogol, ceteareth-7, cetereth-20, cetyl phosphate, cetyl stearyl alcohol, corn oil PEG esters, DEA-cetyl phosphate, dextrin laurate, dilaureth-7 citrate, dimyristyl phosphate, glycereth-17 cocoate, glyceryl erucate, glycerol, glyceryl laurate, G.M.S. acid stable, hydrogenated castor oil PEG esters, isosteareth-11 carboxylic acid, lecithin, lysolecithin, nonoxynol-9, octyldodeceth-20, palm glyceride, PEG diisostearate, PEG stearamine, poloxamines, polyglyceryls, potassium linoleate, PPGs, raffinose myristate, sodium caproyl lactylate, sodium caprylate, sodium cocoate, sodium isostearate, sodium tocopheryl phosphate, steareths, TEA-C12-C13 pareth-3 sulfate, Ui-Ci2-C15 pareth-6 phosphate, and trideceths. A humectant can help maintain moisture levels in skin. The humectant can be for example: acetyl arginine, algae extract, aloe barbadensis leaf extract, betaine, 2, 3-butanediol, chitosan lauroyl glycinate, diglycereth-7 malate, diglycerin, diglycol guanidine succinate, erythritol, fructose, glucose, glycerine, honey, hydrolyzed wheat protein/PEG-20 acetate copolymer, hydroxypropyltrimonium hyaluronate, inositol, lactitol, maltitol, maltose, mannitol, mannose, methoxy PEG, myristamidobutyl guanidine acetate, polyglyceryl sorbitol, potassium PCA, propylene glycol, sodium PCA, sorbitol, sucrose, and urea.
Each composition can include one or more types of preservative. A suitable preservative, for example, can be: benzalkonium chloride, benzoic acid, benzothonium chloride, benzyl alcohol, 2- bromo-2-nitropropane-l,3-diol, bronopol, butylated hydroxyanisole, butylated hydroxytoluene, butyl paraben, chlorophene, chlorphenesin, diazolidinyl urea, DMDM hydantoin, ethyl paraben, formaldehyde-releasing preservative, hydroquinone, iodopropynyl butylcarbamate, imidazolidinyl urea, methyldibromo glutaronitrile, methylhydroquinone, methylisothiazolinone, methyl paraben, nitrosamines, o-cymen-5-ol, phenoxyethanol, propyl paraben, quaternium-15, sodium benzoate, sodium dehydroacetate, sodium hydroxymethyl glycinate, sodium metabisulfite, and sodium sulfite.
A skin conditioning agent, as defined herein, improves dry or damaged skin. Such agents, for example, include: acetyl cysteine, N-acetyl dihydrosphingosine, acrylates/behenyl acrylate/dimethicone acrylate copolymer, adenosine, adenosine cyclic phosphate, adensosine phosphate, adenosine triphosphate, alanine, albumen, algae extract, allantoin and deriviatives, aloe barbadensis extracts, aluminum PCA, amyloglucosidase, arbutin, arginine, azulene, bromelain, buttermilk powder, butylene glycol, caffeine, calcium gluconate, capsaicin, carbocysteine, carnosine, beta-carotene, casein, catalase, cephalins, ceramides, chamomilla recutita (matricaria) flower extract, cholecalciferol, cholesteryl esters, coco-betaine, coenzyme A, corn starch modified, crystallins, cycloethoxymethicone, cysteine DNA, cytochrome C, darutoside, dextran sulfate, dimethicone copolyols, dimethylsilanol hyaluronate, DNA, elastin, elastin amino acids, epidermal growth factor, ergocalciferol, ergosterol, ethylhexyl PCA, fibronectin, folic acid, gelatin, gliadin, beta-glucan, glucose, glycine, glycogen, glycolipids, glycoproteins, glycosaminoglycans, glycosphingolipids, horseradish peroxidase, hydrogenated proteins, hydrolyzed proteins, jojoba oil, keratin, keratin amino acids, -kinetin, lactoferrin^ lanosterol, lauryl PCA, lecithin, linoleic acidj linolenic acid, lipase, lysine, lysozyme, malt extract, maltodextrin, melanin, methionine, mineral salts, niacin, niacinamide, oat amino acids, oryzanol, palmitoyl hydrolyzed proteins, pancreatin, papain, PEG, pepsin, phospholipids, phytosterols, placental enzymes, placental lipids, pyridoxal 5- phosphate, quercetin, resorcinol acetate, riboflavin, RNA, saccharomyces lysate extract, silk amino acids, sphingolipids, stearamidopropyl betaine, stearyl palmitate, tocopherol, tocopheryl acetate, tocopheryl linoleate, ubiquinone, vitis vinifera (grape) seed oil, wheat amino acids, xanthan gum, and zinc gluconate.
A skin protectant, as defined herein, protects injured or exposed skin or mucous membrane surfaces from harmful or irritating chemicals. A skin protectant, for example, includes: algae extract, allantoin, aluminium hydroxide, aluminium sulfate, betaine, camellia sinensis leaf extract, cerebrosides, dimethicone, glucuronolactone, glycerin, kaolin, lanolin, malt extract, mineral oil, petrolatum, potassium gluconate, and talc.
The sunscreen agent can absorb, reflect or scatter UV radiation in the wavelength range of about 290 to 400 nanometers. Such agents include: benzophenone-3 (oxybenzone), benzophenone-4
(sulisobenzone), benzophenone-8 (dioxybenzone), butyl methoxydibenzoylmethane (Avobenzone),
DEA-methoxycinnamate (diethanolamine methoxycinnamate), ethyl dihydroxypropyl PABA
(ethyl 4- [bis (hydroxypropyl)] aminobenzoate), ethylhexyl dimethyl PABA (Padimate O), ethylhexyl methoxycinnamate (octyl methoxycinnamate), ethylhexyl salicylate (octyl salicylate), homosalate, menthyl anthranilate (Meradimate), octocrylene, PABA (aminobenzoic acid), phenylbenzimidazole sulfonic acid (Ensulizole), TEA-salicylate (trolamine salicylate), titanium dioxide, and zinc oxide.
Examples of thickening or viscosity increasing agents include: acrylamides copolymer, agarose, amylopectin, bentonite, calcium alginate, calcium carboxymethyl cellulose, carbomer, carboxymethyl chitin, castor oil derivatives, cellulose gum, cellulosic preparation, cetyl alcohol, cetostearyl alcohol, coconut oil, dextrin, gelatin, hydrogenated tallow, hydroxyethylcellulose, hydroxypropylcellulose, hydroxpropyl starch, inorganic thixotrope, magnesium alginate, methylcellulose, microcrystalline cellulose, modified clays, paraffin, pectin, various PEG's, polyacrylic acid, polymethacrylic acid, polyvinyl alcohol, quaternium ammonium compound of bentonite or zinc stearate, shea butter, various PPG's, "sodium acrylates copolymer, sodium- carrageenan, silicon dioxide, xanthum gum, and yeast beta-glucan. Preferably, each composition comprises about 25% volume/volume sap from a plant of the genus Plwneria in an organic base or in an emulsion base.
Preferably, each composition comprises: about 25% volume/volume sap from a plant of the genus Pϊumeria; and a base having about 15% volume/volume Whitfield's Ointment™ pre-mixed with about 60% volume/volume either Vitamin E Cream or Sorbelene Cream. Preferably, the base has a low alcohol content.
Whitfield's Ointment™ can comprise 3 g/50 g benzoic acid and 1.5 g/50 g salicylic acid in a lanolin, petroleum jelly or other type of organic base. Whitfield's Ointment™ can be as manufactured by Gilseal Coy, Queensland, Australia or Biotech Pharmaceuticals, Queensland,
Australia.
Vitamin E Cream can comprise tocopheryl acetate in an oily base. Vitamin E Cream can be as manufactured by Liberty Cosmetics, New South Wales, Australia.
Sorbelene Cream (being an emulsion) can comprise water, glycerine, cetamacrogol, liquid paraffin, cetyl stearyl alcohol, methyl paraben, propyl paraben and imidazolindinyl urea as manufactured by Amcal Chemists Ltd, Victoria, Australia, Jean Charles Professional Products, New South Wales, Australia or Lustra Labs., Victoria, Australia.
Preferred Embodiments of the Invention Having broadly described the invention in its various aspects, non-limiting examples of embodiments will now be given.
Example 1 Preparation of a Cream Comprising a Plumeria Extract
This example describes the preparation of a therapeutic cream comprising an extract of Plumeria rubra. A green -tipped branch of a Plumeria rubra plant was punctured with a knife and 12-20 drops of the milky sap (latex) of the plant were collected in a container. Within about three minutes of collecting the sap, the sap was mixed with a base comprising about 15% volume/volume Whitfield's Ointment™ (manufactured by Gilseal Coy, Queensland, Australia or Biotech Pharmaceuticals, Queensland, Australia) pre-mixed with about 60% volume/volume either Vitamin E Cream (manufactured by Liberty Cosmetics, New South Wales, Australia) or Sorbelene Cream (manufactured by Amcal Chemists Ltd, Victoria, Australia, Jean Charles Professional Products, New South Wales, Australia or Lustra Labs., Victoria, Australia). The volume of sap in the cream composition was about 25%.
Whitfield's Ointment™ typically comprises 3 g/50 g benzoic acid and 1.5 g/50 g salicylic acid in a lanolin or petroleum jelly (organic) base.
Vitamin E Cream typically comprises tocopheryl acetate in an oily base.
Sorbelene Cream (being an emulsion) typically comprises water, glycerine, cetamacrogol, liquid paraffin, cetyl stearyl alcohol, methyl paraben, propyl paraben and imidazolindinyl urea.
Since the latex separates/coagulates on exposure to air, the latex should be mixed with the base as soon as possible. One way of checking to see that there is sufficient latex in the composition is to place some of the composition between the forefinger and thumb. If there is insufficient latex in the composition, many fine latex-derived strands will not be evident when moving the thumb and forefinger away from one another.
Example 2
Anti-Cancer Treatment
The cream as described in Example 1 has been proven effective for the treatment of various cancers and pre-cancers, including: tumours of advanced breast cancer, viral penile carcinoma, squamous cell carcinoma (nose, hand, chest, vagina, leg), melanoma (ear, back, chest, neck, face), solar keratoses (hand, nose) and basal cell carcinoma (ear, face, arm, leg).
The cream was applied to the skin cancer or cancer precursor once or twice a day. No adverse reactions were reported, the cream did not irritate the skin nor did it inflame the skin. On average, melanomas disappeared and were replaced by new healthy skin usually within three weeks. Solar keratoses, on average, disappeared and were replaced by new healthy skin usually within 10 days. On average, squamous cell carcinomas disappeared and were replaced by new healthy skin usually within two weeks.
Cancers have also been treated on the lower eyelids, face and back of the head, with the cancers usually disappearing within a matter of 2-3 weeks.
The cream also appeared to elicit an immune response (to have "memory") whereby newly appearing squamous cell carcinomas would disappear within a matter of days without requiring fresh application of the cream.
Some of the advantages of the composition for treating skin cancer (or its precursors) include that the composition specifically targets cancerous cells as opposed to surrounding healthy cells (unlike radiotherapy and chemotherapy), invasive surgical procedures (cancer removal using liquid nitrogen or surgical incision) can be avoided, and cancers on generally inoperable parts of the body can be treated (e.g. cancers on the lower eyelids).
Clearance of skin cancers and pre-cancerous growths were in some instances confirmed by biopsy by pathologists and medical practitioners. Some of those instances are described below.
Solar Keratosis Lesion
A punch specimen 3 mm in diameter and 2 mm in depth was taken of a lesion on a hand, and the specimen was embedded. Microscopic sections showed hyperkeratotic moderate to severely dysplastic solar keratosis in the punch specimen. Upon application of the cream twice daily for eight days, the lesion was confirmed by a doctor as having resolved.
Punch specimens 4 mm in diameter and 2 mm in depth were taken of lesions from a nose, and the specimens were embedded. Microscopic sections showed atrophic solar keratosis with patchy
~acantholytic bowenoid hypertrophic change. There was no evidence of invasive malignancy.
Upon application of the cream twice daily for approximately 1 month, the lesions disappeared and the punch incisions were only slightly visible.
Squamous Cell Carcinoma
A biopsy was taken of a lesion on a hand (a skin ellipse 7 x 2 x 2 mm with a slightly elevated cream area 2 mm). The biopsy showed the lesion to be an early well differentiated squamous cell carcinoma in skin with solar degeneration. Upon application of the cream twice daily for less than three weeks, the lesion was confirmed by a doctor as having resolved.
Example 3 Anti-Fungal Treatment
The cream as described in Example 1 has been proven effective for the treatment of fungal conditions, including athlete's foot and ringworm.
Although Whitfield's Ointment™ is commonly used to treat fungal infections, the cream of the present invention displayed superior antifungal activity over Whitfield's Ointment™ alone. It is believed that the sap works synergistically with one or more ingredients in the cream.
The cream was applied to the fungal infection twice a day. On average, tinea disappeared within 3- 4 days. This result could not be achieved using Whitfield's Ointment™ alone. Example 4
Anti- Viral Treatment
The cream as described in Example 1 has been proven effective for the treatment of sores, ulcers, lesions, blisters, cancers, inflammations and skin discolorations that are caused by a virus.
The cream was applied twice a day. The cream was used to effectively treat conditions caused by herpes simplex virus in the mouth and genital areas. The conditions cleared up within 2-3 weeks. The cream was also used to effectively treat carcinomas in genital areas caused by human papilloma virus. The carcinomas disappeared within 3 weeks.
Example 5 Treatment of Skin Defects and Other Conditions The cream as described in Example 1 has been proven effective for the treatment of various skin defects and haemorrhoids. The cream has been used to treat eczema, dermatitis, brown age spots, moles, burns and seborrhoeic keratoses.
The cream was applied once or twice a day. Eczema, dermatitis and brown age spots cleared up or improved usually within about seven days. Haemorrhoids were effectively treated within 2-3 weeks. Seborrhoeic keratoses (maxillary area) were effectively treated within about three weeks. In one instance, brown age spots (on the backs of hands) faded after about four weeks. A growing dark brown mole (on the side of a nose) dropped off in less than three weeks, leaving smooth healthy skin with no scar tissue at all.
Throughout this specification, unless in the context of usage an alternative interpretation is required, the term "comprise" (and variants thereof such as "comprising" and "comprised") denotes the inclusion of a stated integer or integers but does not exclude the presence of another integer or other integers.
Whilst the above has been given by way of illustrative example of the invention, many modifications and variations may be made thereto by persons skilled in the art without departing from the broad scope and ambit of the invention as herein set forth.

Claims

Claims
1. A composition for preventing or treating skin cancer, said composition comprising an extract from a plant of the genus Plumeria.
2. The composition of claim 1, wherein the cancer or precursor of the cancer is selected from the group consisting of: squamous cell carcinoma; basal cell carcinoma; melanoma; Kaposi's sarcoma; cutaneous lymphoma; adnexal tumour; Merkel cell carcinoma; and solar keratosis.
3. A method for preventing or treating skin cancer in a subject, said method comprising the step of administering to the subject a composition comprising an extract from a plant of the genus
Plumeria.
4. The method of claim 3, wherein the cancer or precursor of the cancer is selected from the group consisting of: squamous cell carcinoma; basal cell carcinoma; melanoma; Kaposi's sarcoma; cutaneous lymphoma; adnexal tumour; Merkel cell carcinoma; and solar keratosis.
5. The use of an extract from a plant of the genus Plumeria in the preparation of a medicament for the prevention or treatment of skin cancer in a subject.
6. A composition for preventing or treating a fungal infection, said composition comprising an extract from a plant of the genus Plumeria.
7. The composition of claim 6, wherein the fungal infection is tinea.
8. The composition of claim 6 further comprising benzoic acid and salicylic acid.
9. A method for preventing or treating a fungal infection in a subject, said method comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
-10. The use of an extract from a plant of the genus Plumeria in the preparation of a medicament for the prevention or treatment of a fungal infection in a subject.
11. A composition for preventing or treating a viral infection, said composition comprising an extract from a plant of the genus Plumeria.
12. The composition of claim 11, wherein the viral infection is due to a virus selected from the group consisting of: herpes simplex virus 1; herpes simplex virus 2; and human papillomavirus.
13. The composition of claim 11, wherein the composition is applied to a sore, ulcer, lesion, blister, cancer, inflammation, skin discoloration or other skin defect that is caused by a virus.
14. A method for preventing or treating a viral infection in a subject, said method comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
15. The method of claim 14, wherein the viral infection is due to a virus selected from the group consisting of: herpes simplex virus 1 ; herpes simplex virus 2; and human papillomavirus.
16. The method of claim 14, wherein the composition is applied to a sore, ulcer, lesion, blister, cancer, inflammation, skin discoloration or other skin defect that is caused by a virus.
17. The use of an extract from a plant of the genus Plumeria in the preparation of a medicament for the prevention or treatment of a viral infection in a subject.
18. A composition for repairing or preventing a defect of the skin, said composition comprising an extract from a plant of the genus Plumeria.
19. The composition of claim 18, wherein the defect is selected from the group consisting of: an age spot; a benign tumour; a blister; a burn; chicken pox; a cold sore; a crack; cradle cap; dermatitis; diaper rash; eczema; a lesion; a mole; a papule; a pustule; a reddened area; rosacea; scaling; a stomatitis; an ulcer; a wound; and seborrhoeic keratosis.
20. A method of repairing or preventing a defect of the skin in a subject, said method comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
21. The method of claim 20, wherein the defect is selected from the group consisting of: an age spot; a benign tumour; a blister; a burn; chicken pox; a cold sore; a crack; cradle cap; dermatitis; diaper rash; eczema; a lesion; a mole; a papule; a pustule; a reddened area; rosacea; scaling; a stomatitis; an ulcer; a wound; and seborrhoeic keratosis.
22. The use of an extract from a plant of the genus Plumeria in the preparation of a medicament for repairing or preventing a defect of the skin in a subject.
23. A composition for preventing or treating haemorrhoids, said composition comprising an extract from a plant of the genus Plumeria.
24. A method of preventing or treating haemorrhoids in a subject, said method comprising the step of administering to the subject a composition comprising an extract from a plant of the genus Plumeria.
25. The use of an extract from a plant of the genus Plumeria in the preparation of a medicament for preventing or treating haemorrhoids in a subject.
26. A therapeutic composition for topical use comprising an extract from a plant of the genus Plumeria and an organic base or emulsion base.
27. The therapeutic composition of claim 26, wherein the plant is a deciduous form of Plumeria.
28. The therapeutic composition of claim 26, wherein the extract comprises milky sap collected from the plant.
29. A method for preparing a therapeutic composition comprising an extract from a plant of the genus Plumeria, said method comprising the steps of: collecting milky sap extract from the plant; and combining the extract with an organic base or emulsion base.
30. The method of claim 29, wherein the extract is collected from an actively growing branch of the plant.
PCT/AU2005/001897 2004-12-16 2005-12-15 Therapeutic compositions based on extracts of plants from the genus plumeria (frangipani) WO2006063402A1 (en)

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