Claims for Patent: 4,895,727

Summary for Patent: 4,895,727

Title:	Pharmaceutical vehicles for exhancing penetration and retention in the skin
Abstract:	This invention is a method of inducing a reservoir effect in skin and mucous membranes so as to enhance penetration and retention and reduce transdermal flux of topically applied therapeutic and cosmetic pharmacologically active agents. The invention also relates to topical treatment methods involving such reservior effect enhancers, and to pharmaceutical compositions containing them.
Inventor(s):	Allen; Larry M. (Denver, CO)
Assignee:	Chemex Pharmaceuticals, Inc. (Denver, CO)
Application Number:	06/730,682
Patent Claims:	1. A method of enhancing penetration of the skin and mucous membrane by a pharmacologically active agent and retention of said pharmacologically active agent therein comprising the application to the skin of a composition comprising said pharmacologically active agent and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of the pharmacologically active agent. 2. The method of Claim 1 wherein said pharmacologically active agent is selected from the group consisting of: steroids, antiparasitic agents, antileprosy agents, antimetabolites, cell-regulatory agents, immuno-pharmacological agents, allergens, antihistaminic agents, anti-inflammatory agents, anesthetic agents, counter-irritants, skin vitamins and nutrients, diagnostic agents, radiopaque agents, cryoprotective agents, perfumes insect repellants, hair dyes, antiscarring agents, sun screens, melanin-stimulating agents, antisecretory agents, depilatories, hair restorers, wrinkle-reducing agents, emollients, rubifacients, and cosmetic agents. 3. The method of claim 1 wherein said pharmacologically active agent is selected from the group consisting of: NDGA (nordihydroguaiaretic acid), VP-16 (epipodophyllotoxin beta-D ethylidene glucopyranoside--etoposide), VM-26 (epipodophyllotoxin beta-D thenylidene glucopyranoside--teniposide), 4'demethyl epipodophyllotoxin, diethylstilbestrol, dithranol, cyclophosphamide, mitomycin, daunomycin, platinum cis-diamine-dichloride, adriamycin, allopurinol, 5-fluorouracil, methotrexate; haloprogin, iodochloro, miconazole nitrate, tolnaftate, thiabendazole, chloroxine, amphotericin, candicin, fungimycin, nystatin, chlordantoin, clotrimazole, ethonam nitrate, miconazole nitrate, pyrrolnitrin, fezatione, ticlatone, tolnaftate, triacetin, dithiocarbamate, thiourea, thiocyantes, aromatic carboxylic acids and the amides thereof, benzoic acid, salicylic acid amide and anilide; aromatic sulfides, polysulfides, and sulfoxides, 5,5-dichloro-2,2-dihydroxydiphenylsulfide; quaternary ammonia and phosphonium compounds, decamethylene-bis-(4-thio-pyridine-methyl-tosylate, 8-hydroxyquinoline sulfate, halogenated quinolines, 7-iodo-8-hydroxy-quinoline-5-sulfonic acid, 5-chloro-7-iodo-8-hydroxy-quinoline, 5-chloro-8-hydroxy-quinoline, 5,7-dichloro-8-hydroxyquinaldine, 5,7-diiodo-8-hydroxyquinoline, decamethylene-bis (4-amino-quinaldium chloride); benzothiazole derivates, (2-dimethylamino-6-(beta-diaminoethoxy)-benzothiazole dihydrochloride; imidazole derivatives, 1-(o-chloro-alpha-alpha-diphenylbenzyl)-imidazole, 1-[o,p-dichloro-beta-(o,p-dichlorobenzyloxy)-phenethylimidazole], 2-phenylbenzimidazole, 2-furfurylbenzimidazole, 3,5-dibenzyltetrahydro-1,3,5-thiadizine-2-thione; 5-nitro-2-furfuryl-3-chloropropionate; quinones, tetrachloro-p-benzoquinone, 1,4-naphthoquinone, phenanthraquinone; sulfonamides and sulfones; aromatic diamidines, 2-hydroxystilbamidine, diamidinodiphenylamine; dioctyl sodium sulfosuccinate, haloprogin, miconazole nitrate, potassium sorbate, alkali and alkaline earth metal propionates, lauryl sulfate; sulfonomides, penicillins, cephalosporins, penicillinase, lincomycins, vancomycins, tetracylines, chloramphenicols, streptomycins, gramicidin, neomycin, polymyxin beta sulfate, tetracycline, benzethonium chloride, gentamicin sulfate, nitrofurazone, benzalkonium chloride, hexylresorcinol, chloroxylenol, cloflucarban, triclocarban, triclosan; glacial acetic acid, calcium pantothenate, lactic acid, cantharidin, podophyllin; acyclovir, benzalkonium chloride, alcohol, anhydrous glycerin, benzocaine, camphor, carbamide peroxide, lanolin, menthol, petrolatum, urea, idoxuridine, amantadine, methisazone, cytarabine, interferons, chloroform, ether, bacillus calmette-guerin, levamisole; benzoyl peroxide, resorcinol monoacetate, azelaic acid, adipic acid, C8 and C10-13 aliphatic dicarboxylic acids, sulfur, povidone-iodine, salicylic acid, fluocinolone acetonide, para-aminobenzoic acid sodium thiosulfate, meclocyline sulfosalicylate, sodium sulfacetamide, sulfurated lime; saponated cresol, menthol, mercury oleate, anthralin, methotrexate; N,N-dimethyl aspartic acid; N-N-dimethyl glutamic acid, antipyrine, camphor, eugenol, eucalyptol, thymol, allyl isothiocyanate (mustard oil, capsicum preparations, histamine dihydrochloride, methyl nicotinate, turpentine oil, diphenhydramine hydrochloride, phenyltoloxamine dihydrogen citrate, pyrilamine maleate, and tripelennamine hydrochloride; and the systemically hydrolyzable ethers and esters of all the foregoing. 4. The method according to claim 1 wherein the pharmacologically active agent and the zinc containing compound are present in approximately equimolar amounts. 5. The method according to claim 1 wherein the concentration of zinc-containing compound is less than about 35%. 6. The method according to claim 1 wherein the water-soluble zinc-containing compound dissociates to provide ionic zinc in the composition. 7. The method of claim 1 wherein said zinc-containing compound is a zinc salt. 8. The method according to claim 7 wherein the zinc salt is selected from the group consisting of zinc halide, zinc sulfate, zinc nitrate, zinc acetate and zinc stearate. 9. The method according to claim 7 wherein the zinc salt is zinc chloride. 10. A method of enhancing the skin and mucous membrane penetration and retention of a pharmacologically active agent comprising the topical application to the skin of a composition comprising said pharmacologically active agent and an effective penetrating and retaining amount of a zinc salt which acts to reduce the transdermal flux through the skin and mucous membrane of the pharmacologically active agent. 11. The method according to claim 10 wherein the zinc salt is zinc chloride. 12. A method of enhancing penetration of the skin and mucous membrane by a pharmacologically active agent selected from the group consisting of antineoplastic agents, immunopharmacological agents, steroids, antifungal agents, antiviral agents, antiparastic agents, pediculides, acne treatment compounds, antipsoriasis agents, leprosy agents, anethetic agents, analgesic agents, counter-irritants, antihistamines, allergy diagnostic agents, vitamins and nutrients, cosmetic agents and sunscreens comprising the application to the skin of a composition comprising the pharmacologically active agent and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of the pharmacologically active agent. 13. The method according to claim 12 wherein the water soluble zinc containing compound is a zinc salt. 14. The method according to claim 13 wherein the zinc salt is selected from the group consisting of zinc halide, zinc sulfate, zinc nitrate, zinc acetate, and zinc stearate. 15. A method of enhancing penetration of the skin and mucous membrane by a pharmacologically active agent other than erythromycin and retention of said pharmacologically active agent therein comprising the application to the skin of a composition comprising said pharmacologically active agent other than erythromycin and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of the pharmacologically active agent. 16. The method according to claim 15 wherein the zinc-containing compound is a zinc salt. 17. A method of enhancing penetration and retention of the skin and mucous membrane by a pharmacologically active agent selected from the group consisting of triamcinolone acetonide, clotrimazole, miconazole and salts thereof, salicylic acid and 5-fluorouracil composition the application to the skin of a composition comprising said pharmacologically active agent and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of the pharmacologically active agent. 18. A method of enhancing penetration and retention of the skin and mucous membrane by nordihydroguaiaretic acid comprising the application to the skin of a composition comprising said nordihydroguaiaretic acid and an effective penetrating and retraining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of nordihydroguaiaretic acid. 19. A method of enhancing penetration and retention of the skin and mucous membrane by a pharmacologically active agent selected from the group consisting of retinoids and vitamin A comprising the application to the skin of a composition comprising said pharmacologically active agent and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of the pharmacologically active agent. 20. A method of enhancing penetration and retention of the skin and mucous membrane by acyclovir comprising the application to the skin of a composition comprising said acyclovir and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of acyclovir. 21. A method of enhancing penetration and retention of the skin and mucous membrane by dapsone comprising the application to the skin of a composition comprising said dapsone and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of dapsone. 22. A method of enhancing penetration and retention of the skin and mucous membrane by hydrocortisone comprising the application to the skin of a composition comprising said hydrocortisone and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of hydrocortisone. 23. A method of enhancing penetration and retention of the skin and mucous membrane by tetracycline comprising the application to the skin of a composition comprising said tetracycline and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of tetracycline. 24. A method of enhancing penetration and retention of the skin and mucous membrane by urea comprising the application to the skin of a composition comprising said urea and an effective penetrating and retaining amount of a water-soluble zinc-through containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of urea. 25. A method of enhancing penetration and retention of the skin and mucous membrane by methotrexate comprising the application to the skin of a composition comprising said methotrexate and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of methotrexate. 26. A method of enhancing penetration and retention of the skin and mucous membrane by an antiviral agent comprising the application to the skin of a composition comprising said antiviral agent and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of the antiviral agent. 27. A method of enhancing penetration and retention of the skin and mucous membrane by a wrinkle reducing agent comprising the application to the skin of a composition comprising said wrinkle reducing agent and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of the wrinkle reducing agent. 28. A method enhancing penetration and retention of the skin and mucous membrane by an antifungal agent comprising the application to the skin of a composition comprising said antifungal agent and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of the antifungal agent. 29. A method of enhancing penetration and retention of the skin and mucous membrane by an antipsoriasis agent comprising the application to the skin of a composition comprising said antipsoriasis agent and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of the antipsoriasis agent. 30. A method of enhancing penetration and retention of the skin and mucous membrane by an antiinflammatory agent comprising the application to the skin of a composition comprising said antiinflammatory agent and an effective penetrating and retaining amount of a water-soluble zinc-containing compound which acts to reduce the transdermal flux through the skin and mucous membrane of the antiinflammatory agent.

Details for Patent 4,895,727

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Merck Teknika Llc	TICE BCG	bcg live	For Injection	102821	06/21/1989		2040-01-28
Jubilant Hollisterstier Llc	N/A	positive skin test control-histamine	Injection	103891	03/13/1924		2040-01-28