WO2002049606A2 - Transdermalsysteme (tds) enthaltend inhibitoren der phosphodiesterase iv - Google Patents
Transdermalsysteme (tds) enthaltend inhibitoren der phosphodiesterase iv Download PDFInfo
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- WO2002049606A2 WO2002049606A2 PCT/DE2001/004898 DE0104898W WO0249606A2 WO 2002049606 A2 WO2002049606 A2 WO 2002049606A2 DE 0104898 W DE0104898 W DE 0104898W WO 0249606 A2 WO0249606 A2 WO 0249606A2
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
- A61K9/7023—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms
- A61K9/703—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms characterised by shape or structure; Details concerning release liner or backing; Refillable patches; User-activated patches
- A61K9/7038—Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer
- A61K9/7046—Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer the adhesive comprising macromolecular compounds
- A61K9/7053—Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer the adhesive comprising macromolecular compounds obtained by reactions only involving carbon to carbon unsaturated bonds, e.g. polyvinyl, polyisobutylene, polystyrene
-
- 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
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/42—Oxazoles
- A61K31/421—1,3-Oxazoles, e.g. pemoline, trimethadione
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
- A61K9/7023—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms
- A61K9/703—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms characterised by shape or structure; Details concerning release liner or backing; Refillable patches; User-activated patches
- A61K9/7038—Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer
- A61K9/7046—Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer the adhesive comprising macromolecular compounds
- A61K9/7053—Transdermal patches of the drug-in-adhesive type, i.e. comprising drug in the skin-adhesive layer the adhesive comprising macromolecular compounds obtained by reactions only involving carbon to carbon unsaturated bonds, e.g. polyvinyl, polyisobutylene, polystyrene
- A61K9/7061—Polyacrylates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
- A61K9/7023—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms
- A61K9/703—Transdermal patches and similar drug-containing composite devices, e.g. cataplasms characterised by shape or structure; Details concerning release liner or backing; Refillable patches; User-activated patches
- A61K9/7084—Transdermal patches having a drug layer or reservoir, and one or more separate drug-free skin-adhesive layers, e.g. between drug reservoir and skin, or surrounding the drug reservoir; Liquid-filled reservoir patches
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
- A61K47/10—Alcohols; Phenols; Salts thereof, e.g. glycerol; Polyethylene glycols [PEG]; Poloxamers; PEG/POE alkyl ethers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/26—Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/30—Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
- A61K47/32—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. carbomers, poly(meth)acrylates, or polyvinyl pyrrolidone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Definitions
- TDS Transdermal systems
- the present invention relates to transdermal systems which contain inhibitors of phosphodiesterase IV, in particular the more pharmacologically active (R) - (-) - enantiomer of rolipram, which is also known as (-) - rolipram or (R) - (-) - 4- ( 3-Cyclopentyloxy-4-methoxyphenyl) -2-pyrrolidone), or (R) - (-) - methylphenyloxazolidinone derivatives such as (R) - (-) - 5- (4-methoxyphenyl-3-propoxy) - 5-methyl-2-oxazolidinone (Mesopram (INN)).
- Type IV phosphodiesterases regulate the synthesis and metabolism of cAMP.
- (-) - Rolipram and (R) - (-) - methylphenyloxazolidinone derivatives are inhibitors of phosphodiesterase IV.
- the pharmacological activity of rolipram has been well documented in the literature.
- PDE IV inhibitors can include for the treatment of neuropsychatric diseases such as depression and dementia, for influencing the secretion of gastric acid, for the relaxation of the smooth muscles of the respiratory tract and for diseases caused by immunology or inflammation, in particular diseases of the immune system, which are triggered by stimulation of TNF and other cytokines, be used.
- Such diseases are, for example, autoimmune diseases, pulmonary diseases, infectious diseases and
- Bone resorption diseases such as rheumatoid arthritis, rheumatoid spondylitis, osteoarthritis, gout, sepsis, septic shock, endotoxin shock, grammegative sepsis, toxic shock syndrome, acute respiratory distress syndrome, pulmonary hypertension and other obstructive pulmonary diseases, cystic fibrosis, silous asthma, pulmonary artery, pulmonary asthma , Ulcerative colitis, Crohn's disease, osteoporosis, organ damage after reperfusion, inflammatory diseases of the CNS such as cerebral malaria, multiple sclerosis, panencephalitis, infectious diseases such as AIDS, mad cow disease, inflammatory skin diseases such as urticaria, psoriasis, atopic dermatitis, Contact dermatitis, lupus erythematosus and diabetes insipidus and neuroprotection z.
- Parkinson's disease or dementia after multi-infarction or stroke B. in Parkinson's disease
- the present invention relates to the use of the more active (R) - (-) - enantiomer of rolipram (UPAC: (R) - (-) - 4- (3-cyclopentyloxy-4-methoxyphenyl) -2-pyrrolidone) of the formula I.
- R 1 is a hydrocarbon radical having 1 to 5 carbon atoms.
- WO 91/09634 discloses the suitability of the Racemates R / S-Rolipram (CAS No. 61413-54-5) for transdermal use.
- the object of the present invention is to provide easy-to-administer, crystal-free transdermal formulations of the more active (-) enantiomer of rolipram.
- WO 97/15561 discloses the suitability of methylphenyloxazolidinone derivatives for the treatment of diseases which are mediated by TNF and which also influence other cytokines, for example interleukin-1 or -6.
- Production processes for enantiomerically pure methylphenyloxazolidinone derivatives are specified, the R derivative in particular being a more effective inhibitor of phosphodiesterase IV in comparison with the racemate. Cerebral activity was observed in rats after intraperitoneal administration, with the R enantiomer proving to be the more effective substance.
- Enteral or parenteral formulations are proposed as administration forms, which can be administered orally, sublingually or intramuscularly or intravenously or else topically or intrathecally.
- the present invention has the object of providing easy-to-administer, crystal-free transdermal formulations of such phosphodiesterase IV inhibitors, in particular for (R) - (-) - 5- (4-methoxyphenyl-3-propoxy) -
- 5-methyl-2-oxazolidinone meopram (INN)
- INN 5-methyl-2-oxazolidinone
- Plasma levels can be achieved. This is particularly important for (R) - (-) - 5- (4-methoxyphenyl-3-propoxy) -5-methyl-2-oxazolidinone (mesopram (INN)), since this active ingredient has a narrow therapeutic index.
- the present invention solves this problem by providing transdermal systems which are suitable for (-) - rolipram or (R) - (-) - 5- (4-methoxyphenyl-3-alkoxy) -5-methyl-2-oxazolidinone derivatives into the skin of a wearer, especially a human, in such a way that it can be used therapeutically Skin flows result.
- the transdermal systems according to the invention are distinguished by a special selection of formulation components, in particular the adhesive, penetration enhancer and / or crystallization inhibitor.
- the transdermal system according to the invention is particularly suitable for (-) - rolipram and (R) - (-) - 5- (4-methoxyphenyl-3-propoxy) -5-methyl-2-oxazolidinone (mesopram (INN).
- transdermal systems according to the invention in the sense of matrix systems comprise a cover layer which is impermeable to the phosphodiesterase IV inhibitor and auxiliaries and adheres to one to three layers of a formulation which comprises the phosphodiesterase IV inhibitor in up to 30% by weight with up to 70% by weight .-% of a medically acceptable adhesive and optionally up to 40 wt .-% of a penetration enhancer and optionally up to 25 wt .-% crystallization inhibitor.
- polyacrylate, silicone or polyisobutylene adhesives can be used as medically acceptable adhesives.
- polyurethanes, block copolymers based on styrene and other organic polymers can also be used.
- Polyacrylate adhesives are preferred.
- Polyacrylate in the sense of the patent is a generic term for all polymers (homo- and copolymers) that contain acrylic acid or acrylic acid derivatives.
- Vinyl acetate-acrylate copolymers and acrylate-vinylpyrrolidone copolymers are particularly preferred.
- Most preferred are heterocopolymers made from vinyl acetate, 2-ethylhexyl acrylate and hydroxyethyl acrylate (Gelva ® -MPS 7881 and 7883) and copolymers made from vinylpyrrolidone and 2-ethylhexyl acrylate (TSR ® glue from Sekisui).
- Each of the applied layers can be coated on one or both sides with an adhesive layer, which can additionally contain penetration-enhancing and / or crystallization-inhibiting substances.
- a skin sticker can be applied to the side of the formulation, covering or on the circumference, which is not covered by the impermeable cover layer.
- the accessible side of the formulation can be covered with a release paper or a release liner.
- 10 to 250 ⁇ m thick films of polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride and cycloolefin copolymer can be used as the cover layer. These can be metallized or lacquered, dyed through or pigmented on one or both sides.
- Peelable films can, for example, be siliconized or fluoropolymer-coated films made of polyethylene terephthalate, polyesters or polyethylene on one or both sides.
- the formulation can first be prepared in volatile solvents, such as, for example, lower alcohols, ketones or lower carboxylic acid esters, and also ethanol, isopropanol, acetone or ethyl acetate, polar ethers, for example tetrahydrofuran, lower hydrocarbons, such as cyclohexane or gasoline, or also halogenated hydrocarbons, such as dichloromethane, trichloromethane, trichlorofluoroethane and trichlorofluoromethane.
- volatile solvents such as, for example, lower alcohols, ketones or lower carboxylic acid esters, and also ethanol, isopropanol, acetone or ethyl acetate, polar ethers, for example tetrahydrofuran, lower hydrocarbons, such as cyclohexane or gasoline, or also halogenated hydrocarbons, such as dichloromethane, trichloromethane, trich
- the following penetration enhancers can be used: monohydric or polyhydric alcohols such as ethanol, 1, 2-propanediol or benzyl alcohol; saturated or unsaturated fatty alcohols with 8 to 18 carbon atoms, such as lauryl alcohol or cetyl alcohol; Hydrocarbons such as mineral oil; saturated and unsaturated fatty acids with 8 to 18 carbon atoms such as stearic acid or oleic acid; Fatty acid esters with up to 24 carbon atoms or
- Dicarboxylic acid diesters with up to 24 carbon atoms such as methyl esters, ethyl esters, isopropyl esters, butyl esters, sec-butyl esters, isobutyl esters, tert-butyl esters or monoglyceric esters of acetic acid, caproic acid, Lauric acid, myristic acid, stearic acid and palmitic acid, phosphatide derivatives such as lecithin, terpenes, urea and its derivatives or ethers such as dimethyl isosorbide and diethylene glycol monoethyl ether.
- lauryl alcohol 1,2-propanediol
- the methyl esters especially the isopropyl esters of myristic acid or oleic acid, diisopropyl adipate and diisopropyl sebacate, lauric acid and oleic acid, and mixtures thereof.
- the transdermal formulation contains crystallization inhibitors which are suitable as complexing agents, for example forming solid solutions with active ingredients, increasing the interface solubility for the active ingredient and reducing the tendency of the active ingredient to recrystallize after removal of a process solvent or lowering the temperature.
- crystallization inhibitors which are suitable as complexing agents, for example forming solid solutions with active ingredients, increasing the interface solubility for the active ingredient and reducing the tendency of the active ingredient to recrystallize after removal of a process solvent or lowering the temperature.
- crystallization inhibitors makes it possible to carry out higher active substance loads in the formulation without the formation of active substance crystals which are only available to a very limited extent for the transport of substances into the skin.
- N-vinyl lactam polymers such as N-vinyl-1-aza-cycloheptane-2-one homopolymer and N-vinyl-piperidin-2-one homopolymer and particularly polymers of vinyl pyrrolidone, such as povidone (Kollidon ®), or Suitable copolymers of vinyl pyrrolidone with vinyl acetate (Copovidone). Particularly preferred is a copovidone of 6 parts of vinyl pyrrolidone and 4 parts of vinyl acetate (Kollidon ® VA 64).
- the transdermal systems according to the invention in the sense of reservoir systems comprise a cover layer which is impermeable to the phosphodiesterase IV inhibitor and auxiliaries and which is optionally deformed by heat and or tension so that it contains up to 30% by weight of the phosphodiesterase IV inhibitor 70% by weight of a reservoir-forming mixture of solvent or suspending agent, optionally in a mixture with auxiliaries such as penetration enhancers, crystallization inhibitors and thickeners contains, being fixed to the reservoir by welding or gluing the above-mentioned cover layer with a membrane which is permeable to the phosphodiesterase IV inhibitor and optionally penetration enhancer, a suitable medically acceptable skin pressure sensitive adhesive being applied to the side of the membrane facing away from the reservoir and facing the skin , which is provided with a removable protective layer.
- auxiliaries such as penetration enhancers, crystallization inhibitors and thickeners
- Polymer films of the type ethylene vinyl acetate copolymer or microporous polypropylene can be used as the permeable membrane.
- substances such as hydroxypropyl cellulose, hydroxyethyl cellulose, caboxmethyl cellulose and their salts, for example the sodium salt, starches and starch derivatives, polyvinylpyrrolidones and their derivatives, and also highly disperse silicon dioxide and its derivatives in the range from 0.1% to 50% of the thickener used.
- the abovementioned layers can be used as cover layers.
- the above-mentioned ones can be used as penetration enhancers, for example, where they can make up up to 100% of the reservoir-forming auxiliary substance. They are preferably added to the solvent or suspending agent in proportions of up to 50%.
- crystallization inhibitors used are, for example, those mentioned above, where they can as a rule make up up to 50% of the reservoir-forming auxiliary mixture. They are preferably added in concentrations of up to 30%.
- Tackifying additives for the purposes of the invention are, for example, natural, partially synthetic and synthetic resins such as, for example, glycerol esters such as Foral 85-E from Hercules or Unitac R 85 from Union Camp, or pentaerythritol esters of types Foral 105-E, Pentalyn HE and Permalyn 6110 from Hercules and Resiester N 35 from Union Resinera and Westrez 2100 from Westvaco, or terpenophenolic resins such as Dertophene T from DRT.
- glycerol esters such as Foral 85-E from Hercules or Unitac R 85 from Union Camp
- pentaerythritol esters of types Foral 105-E
- Pentalyn HE and Permalyn 6110 from Hercules and Resiester N 35 from Union Resinera and Westrez 2100 from Westvaco
- terpenophenolic resins such as Dertophene T from DRT.
- the top layer is deformed by heat or tension so that it is suitable for holding a reservoir preparation containing medicinal substances.
- the reservoir preparation is produced by introducing the phosphodiesterase IV inhibitor into a solvent or suspension medium which may contain thickeners and / or crystallization inhibitors. If necessary, it is liquefied by heat so that it can be metered volumetrically or gravimetrically into the bulge in the cover layer. Then either the permeable membrane is applied by welding or gluing to the cover layer and then glued with a composite of skin pressure sensitive adhesive and peel-off film, or by welding or gluing onto the cover layer a three-layer composite of permeable membrane, skin pressure sensitive adhesive and peel-off film is applied. If necessary after punching out, the individual plasters obtained are sealed in tight laminate bags for storage.
- the transdermally active formulation according to the invention is suitable for providing an easy-to-use formulation with a simple application, ie tacking onto the skin.
- the formulation according to the invention is able to produce more constant plasma levels of phosphodiesterase IV inhibitors than, for example, injected active substance formulations.
- the formulation according to the invention avoids concentration peaks in the active ingredient, which in some cases can lead to nausea in patients.
- the use of the formulation according to the invention avoids the first passage of the active substance through the liver, by means of which the active substance concentration in the plasma can be reduced.
- Example 1 Production of a mesopram transdermal system with dimethyl isosorbide as a penetration enhancer
- the entire batch is carried out for about 30 minutes using a paddle stirrer without air bubbles.
- blade coating the mixture obtained on a fluoropolymer-coated polyester film is applied (Scotchpak ® 9742), so that a coating weight from 95.0 to 105.0 g dry matter per m 2 is obtained.
- the coated films are dried at 75 to 85 ° C. in a dry rank to a residual solvent content of ⁇ 1-2 g / m 2 .
- a polyester or polyethylene film (Cotran 9720 ® from 3M; FORKO-Liner from 4P films) is laminated on.
- the active ingredient formulation which is now enclosed on both sides by foils, is punched out to suitable sizes using a punching device and sealed in foil pouches for storage.
- Example 2 Production of a mesopram transdermal system with copovidone as crystallization inhibitor (adhesive: Gelva ® -MPS)
- a release film is then laminated on and the formulation coated on both sides of the film is rolled up.
- Round transdermal systems with a diameter of 35.6 mm are punched out of the roll goods by means of a punching device and sealed in airtight bags (oxyblock).
- Example 3 Production of a mesopram transdermal system with 1,2-propanediol and lauryl alcohol as a penetration enhancer
- Example 4 Preparation of a transdermal system with Mesopram-copovidone as crystallization inhibitor (TSR ® -Sticker Sekisui)
- Heterocopolymer mixture based on vinyl acetate and ethylhexyl acrylate was added and the mixture was homogenized with stirring and stirred without bubbles.
- the batch is made up to 260.0 g with 2-propanol.
- the mixture is applied by knife application to a separating film (Scotchpak ® 9742) and dried, so that a coating of 95.0 to 105.0 g dry matter per m 2 results.
- a further layer of adhesive is then applied to the surface of the formulation that is still accessible without any additional active ingredient or auxiliary.
- the layer thickness of this adhesive layer is set to 10 ⁇ m. After drying again, a carrier film is laminated on. Punching out and packaging is carried out according to Example 1.
- Example 6 Production of a mesopram-containing reservoir transdermal system
- Example 7 Production of a (-) - rolipram transdermal system with dimethyl isosorbide as a penetration enhancer
- the entire batch is carried out for about 30 minutes using a paddle stirrer without air bubbles.
- blade coating the mixture obtained on a fluoropolymer-coated polyester film is applied (Scotchpak ® 9742), so that a coating weight from 95.0 to 105.0 g dry matter per m 2 is obtained.
- the coated films are dried at 75 to 85 ° C. in a drying cabinet to a residual solvent content of ⁇ 1-2 g / m 2 .
- a polyester or polyethylene film (Cotran 9720 ® from 3M; FORKO-Liner from 4P films) is laminated on.
- the active ingredient formulation now enclosed on both sides by foils is supplied with a Punching device punched out to suitable sizes and sealed in foil bags for storage.
- Example 8 Production of a (-) - Rolipram transdermal system with Copovidone as crystallization inhibitor (adhesive: Gelva ® -MPS)
- the batch is made up to a total mass of 1800.0 g with 2-propanol and stirred with a paddle stirrer for about 30 minutes until there are no bubbles.
- a carrier film is coated with the previously prepared mixture to a dry weight of 100 ⁇ 5 g / m 2 using a continuously operating coating device. The coated carrier film is dried in a two-stage drying tunnel at approx. 78 to 82 ° C and a belt speed of 15 cm per minute.
- a release film is then laminated on and the formulation coated on both sides of the film is rolled up. Round transdermal systems with a diameter of 35.6 mm are punched out of the roll goods by means of a punching device and sealed in airtight bags (oxyblock).
- Example 9 Production of a (-) - Rolipram transdermal system with 1,2-propanediol and lauryl alcohol as a penetration enhancer
- Example 10 Preparation of (-) - rolipram transdermal ® with copovidone as crystallization inhibitor (TSR -Sticker Company
- Example 1 Production of a two-layer (-) - Rolipram transdermal system with Copovidone as crystallization inhibitor
- Heterocopolymer mixture based on vinyl acetate and ethylhexyl acrylate was added and the mixture was homogenized with stirring and stirred without bubbles.
- the batch is made up to 260.0 g with 2-propanol.
- the mixture is applied by knife application to a separating film (Scotchpak ® 9742) and dried, so that a coating of 95.0 to 105.0 g dry matter per m 2 results.
- a further layer of adhesive is then applied to the surface of the formulation that is still accessible without any additional active ingredient or auxiliary.
- the layer thickness of this adhesive layer is set to 10 ⁇ m. After drying again, a carrier film is laminated on. Punching out and packaging is carried out according to Example 1.
- Example 12 Production of a (-) - Rolipram-containing reservoir transdermal system
- Example 13 In vitro measurement of the skin flow of (R) - (-) - 5- (4-methoxyphenyl-3-propoxy) -5-methyl-2-oxazolidinone through the skin of the hairless mouse
- transdermal systems according to the invention showed no crystal formation after microscopic examination after storage at 25 ° C. for four weeks:
- mice The skin of male hairless mice (strain MF1 hr / hr Ola / Hsd from Winkelmann, Germany) aged 3 to 4 months was removed 3 cm 2 ventrally and dorsally and, after removal of adherent adipose tissue, mounted in Franz's diffusion cells.
- One of the formulations A to E was applied to the skin areas; on the tissue side, the skin was brought into contact with HEPES-buffered saline solution according to Hank, mixed with 1000 IU penicillin.
- This acceptor solution consisted of 5.9575 g / L HEPES, 0.35 g / L NaHCO 3 , 0.1 L HBSS 10x (GIBCO 032-04065, Life Technologies GmbH, Berlin) in distilled water.
- the acceptor fluid was sampled at two hour intervals in the first six hours and at eight hour intervals in hours 6 to 54. About 1 mL of acceptor liquid was pumped through the diffusion cell per hour using a peristaltic pump. The entire test set-up was at a temperature of 31 ⁇ 1 ° C.
- the amount of (R) - (-) - 5- (4-methoxyphenyl-3-propoxy) -5-methyl-2-oxazolidinone that had passed through the skin pieces was determined by means of a radioimmunoassay.
- the passage of (R) - (-) - 5- (4-methoxyphenyl-3-propoxy) -5-methyl-2-oxazolidinone is shown in Table 2 as it could be measured in the Franz diffusion cells.
- Formulation E described above was tested on twelve healthy men between the ages of 20 and 42 with normal body weight, with three transdermal formulations of 10 cm 2 each with 5 m each of 9 (R) - (-) - 5- for 72 hours. (4-methoxyphenyl-3-propoxyp) -5-methyl-2-oxazolidinone were applied simultaneously to the lower back. After the 72 hours, the transdermal formulation was removed and the concentration of the active substance in the serum was determined by RIA within a week of washing out. The measured serum levels of the active substance resulted in an average transdermal material flow of 0.49 ⁇ 0.7 ⁇ g / cm 2 / h, with maximum serum levels of 0.88 ng / mL in a time interval of 29 ⁇ 10 h.
- plateau-like curves of the serum level of active ingredient were obtained, the plateau being able to be maintained after an approximately linear increase in the first 18 hours to 75 and subsequently decreasing approximately linearly. Due to the pronounced plateau phase that was achieved after the application of the TDS, mesopram concentrations in the range of 65 ⁇ 16% of the maximum levels could still be measured at the time of the decrease in the TDS after three days. After the TDS decreased, the serum levels decreased with a half-life of 6.1 ⁇ 2.7 h. The AUC values and further pharmacokinetic parameters can be found in Tab.
- Cmax maximum concentration
- t TM * time of maximum concentration
- f absolute bioavailability
- AUC area under the serum curve
- TD daily dose (after transdermal administration on average)
- Cl clearance
- oA without indication due to the different length of the infusion periods (from 42 to 60 min); a per day for a total of three days; the individual iv doses were taken into account when calculating the transdermal doses
- the TDS E has an extremely constant release of active ingredient over the period of 3 d. Since the wearing properties of the formulation on which the transdermal system E is based also permit a longer wearing time, the suitability of the system obtained is at least conceivable as a Twice-a-week TDS (wearing time alternating 3 days and 4 days). Due to the low utilization of the drug depot (only 7% of the drug was systemically absorbed within three days), application in the sense of a once-a-week TDS may even be conceivable.
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Abstract
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Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2002231584A AU2002231584A1 (en) | 2000-12-21 | 2001-12-20 | Transdermal systems (tds) that contain inhibitors of phosphodiesterase iv |
| EP01991672A EP1343484A2 (de) | 2000-12-21 | 2001-12-20 | Transdermalsysteme (tds) enthaltend inhibitoren der phosphodiesterase iv |
| US10/451,225 US20040081682A1 (en) | 2000-12-21 | 2001-12-20 | Transdermal system (tds) that contain inhibitors of phosphodiesterase lV |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00250450.4 | 2000-12-21 | ||
| EP00250450A EP1216700A1 (de) | 2000-12-21 | 2000-12-21 | Transdermalsysteme (TDS) enthaltend (R)-(-)-Methylphenyloxazolidinon-Derivate, Inhibitoren der Phosphodiesterase IV |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2002049606A2 true WO2002049606A2 (de) | 2002-06-27 |
| WO2002049606A3 WO2002049606A3 (de) | 2003-03-20 |
Family
ID=8172630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2001/004898 Ceased WO2002049606A2 (de) | 2000-12-21 | 2001-12-20 | Transdermalsysteme (tds) enthaltend inhibitoren der phosphodiesterase iv |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20040081682A1 (de) |
| EP (2) | EP1216700A1 (de) |
| AU (1) | AU2002231584A1 (de) |
| WO (1) | WO2002049606A2 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030096850A1 (en) * | 2001-10-11 | 2003-05-22 | Ford Charles W. | Treating infections by administration of oxazolidinones |
| US10736905B1 (en) | 2016-09-09 | 2020-08-11 | Shahin Fatholahi | Nefopam dosage forms and methods of treatment |
| US10736874B1 (en) | 2017-09-08 | 2020-08-11 | Shahin Fatholahi | Methods for treating pain associated with sickle cell disease |
| US11446311B2 (en) | 2017-09-08 | 2022-09-20 | Shahin Fatholahi | Methods for treating pain associated with sickle cell disease |
| CN112856702B (zh) * | 2021-02-05 | 2022-07-08 | 康蓓净(杭州)智能科技有限公司 | 一种基于等离子体高能低温技术的空气净化杀毒装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3943385A1 (de) * | 1989-12-27 | 1991-07-04 | Schering Ag | Mittel zur transdermalen applikation enthaltend rolipram |
| US5676968A (en) * | 1991-10-31 | 1997-10-14 | Schering Aktiengesellschaft | Transdermal therapeutic systems with crystallization inhibitors |
| DE19540475A1 (de) * | 1995-10-20 | 1997-04-24 | Schering Ag | Chirale Methylphenyloxazolidinone |
| DE19643959A1 (de) * | 1996-10-31 | 1998-05-07 | Lohmann Therapie Syst Lts | Kleber, enthaltend Polymere mit einem sehr geringen Gehalt an Restmonomeren, ein Verfahren zu ihrer Herstellung und ihre Verwendung |
-
2000
- 2000-12-21 EP EP00250450A patent/EP1216700A1/de not_active Withdrawn
-
2001
- 2001-12-20 EP EP01991672A patent/EP1343484A2/de not_active Withdrawn
- 2001-12-20 AU AU2002231584A patent/AU2002231584A1/en not_active Abandoned
- 2001-12-20 US US10/451,225 patent/US20040081682A1/en not_active Abandoned
- 2001-12-20 WO PCT/DE2001/004898 patent/WO2002049606A2/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002049606A3 (de) | 2003-03-20 |
| AU2002231584A1 (en) | 2002-07-01 |
| US20040081682A1 (en) | 2004-04-29 |
| EP1216700A1 (de) | 2002-06-26 |
| EP1343484A2 (de) | 2003-09-17 |
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