CN1288375A - 含抗氧剂的tts - Google Patents
含抗氧剂的tts Download PDFInfo
- Publication number
- CN1288375A CN1288375A CN99802092A CN99802092A CN1288375A CN 1288375 A CN1288375 A CN 1288375A CN 99802092 A CN99802092 A CN 99802092A CN 99802092 A CN99802092 A CN 99802092A CN 1288375 A CN1288375 A CN 1288375A
- Authority
- CN
- China
- Prior art keywords
- pharmaceutical composition
- weight
- antioxidant
- compd
- tocopherol
- Prior art date
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- Granted
Links
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- ZEMPKEQAKRGZGQ-AAKVHIHISA-N 2,3-bis[[(z)-12-hydroxyoctadec-9-enoyl]oxy]propyl (z)-12-hydroxyoctadec-9-enoate Chemical compound CCCCCCC(O)C\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CC(O)CCCCCC)COC(=O)CCCCCCC\C=C/CC(O)CCCCCC ZEMPKEQAKRGZGQ-AAKVHIHISA-N 0.000 description 1
- XLMXUUQMSMKFMH-UZRURVBFSA-N 2-hydroxyethyl (z,12r)-12-hydroxyoctadec-9-enoate Chemical compound CCCCCC[C@@H](O)C\C=C/CCCCCCCC(=O)OCCO XLMXUUQMSMKFMH-UZRURVBFSA-N 0.000 description 1
- 102000012440 Acetylcholinesterase Human genes 0.000 description 1
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- QYOVMAREBTZLBT-KTKRTIGZSA-N CCCCCCCC\C=C/CCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO Chemical compound CCCCCCCC\C=C/CCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO QYOVMAREBTZLBT-KTKRTIGZSA-N 0.000 description 1
- 239000004821 Contact adhesive Substances 0.000 description 1
- XTJFFFGAUHQWII-UHFFFAOYSA-N Dibutyl adipate Chemical compound CCCCOC(=O)CCCCC(=O)OCCCC XTJFFFGAUHQWII-UHFFFAOYSA-N 0.000 description 1
- ZDQWESQEGGJUCH-UHFFFAOYSA-N Diisopropyl adipate Chemical compound CC(C)OC(=O)CCCCC(=O)OC(C)C ZDQWESQEGGJUCH-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
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- 239000001856 Ethyl cellulose Substances 0.000 description 1
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- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
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- DTPCFIHYWYONMD-UHFFFAOYSA-N decaethylene glycol Polymers OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO DTPCFIHYWYONMD-UHFFFAOYSA-N 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
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- 125000003976 glyceryl group Chemical group [H]C([*])([H])C(O[H])([H])C(O[H])([H])[H] 0.000 description 1
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- 239000003607 modifier Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- BARWIPMJPCRCTP-CLFAGFIQSA-N oleyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCCOC(=O)CCCCCCC\C=C/CCCCCCCC BARWIPMJPCRCTP-CLFAGFIQSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- QUANRIQJNFHVEU-UHFFFAOYSA-N oxirane;propane-1,2,3-triol Chemical group C1CO1.OCC(O)CO QUANRIQJNFHVEU-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
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- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- WBHHMMIMDMUBKC-QJWNTBNXSA-M ricinoleate Chemical compound CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O WBHHMMIMDMUBKC-QJWNTBNXSA-M 0.000 description 1
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Classifications
-
- 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
-
- 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
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/21—Esters, e.g. nitroglycerine, selenocyanates
- A61K31/27—Esters, e.g. nitroglycerine, selenocyanates of carbamic or thiocarbamic acids, meprobamate, carbachol, neostigmine
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
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- Health & Medical Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Medicinal Chemistry (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical & Material Sciences (AREA)
- Epidemiology (AREA)
- Dermatology (AREA)
- Neurosurgery (AREA)
- Neurology (AREA)
- Biomedical Technology (AREA)
- Emergency Medicine (AREA)
- Hospice & Palliative Care (AREA)
- Psychiatry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Organic Chemistry (AREA)
- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Anti-Oxidant Or Stabilizer Compositions (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Fats And Perfumes (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Dental Preparations (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
一种药物组合物,含有游离碱或酸加成盐形式的(S)-N-乙基-3-[1-(二甲氨基)乙基]-N-甲基-苯基-氨基甲酸酯和抗氧剂。所述药物组合物可使用经皮输送装置向患者输送。
Description
本发明涉及苯基氨基甲酸酯的全身给药,例如经皮给药的药物组合物。具体地说,本发明涉及如英国专利申请GB 2203040中公开的游离碱或酸加成盐形式的苯基氨基甲酸酯-(S)-N-乙基-3-[1-(二甲氨基)乙基]-N-甲基-苯基-氨基甲酸酯-(下文称之为化合物A)的药物组合物,该文献在本文引作参考。
化合物A可用于抑制中枢神经系统中的乙酰胆碱酯酶,例如用于治疗阿尔茨海默氏病。
GB 2203040的实施例2描述了贴剂形式的经皮组合物,其中将化合物A与两种聚合物和一种增塑剂混合形成一种粘稠的基质。将这种基质涂铺在箔上,然后切成贴剂形式。
通过彻底试验现已发现化合物A容易降解,尤其是在氧的存在下。尽管围绕化合物A形成了闭合性聚合物基质并且将其贮存在气密性包装中,还是发现了GB 2203040中描述的经皮组合物发生降解(可能通过氧化降解)。
本申请人发现,现在可获得含化合物A的稳定药物组合物,如通过标准试验,如应力试验所示,该组合物在较长时间,例如2年内,化合物A不明显降解。
一方面,本发明提供含有游离碱或酸加成盐形式的化合物A和抗氧剂的药物组合物。
在应力稳定性试验中,本发明的药物组合物表现出降解副产物的减少。
本发明的药物组合物可含有高含量的化合物A,例如1%-40%重量,例如10-35%,尤其是20-35%,如30%。
化合物A可存在于本领域已知的任何各种类型的药物稀释剂和载体中。稀释剂和载体可包含不影响本发明药物组合物稳定性的痕量游离基。
稀释剂或载体优选是一种或多种聚合物,更优选是一种或多种亲水性聚合物。在一个优选的实施方案中,载体稀释剂选自至少一种选自下列的聚合物:丙烯酸酯聚合物和聚甲基丙烯酸酯聚合物。聚合物优选具有的平均分子量为约50,000-约300,000道尔顿,如100,000至200,000道尔顿。聚合物优选能够形成膜,由此与皮肤相容。
作为聚合物,尤其可提及丙烯酸酯共聚物,如丙烯酸丁酯、丙烯酸乙基己基酯和乙酸乙烯酯的共聚物。聚合物优选是交联的。优选的丙烯酸酯聚合物是从National Starch and Chemical Company,Zutphen,Holland得到的Durotak品牌的产品,如Durotak 87-2353(下文称聚合物A)、387-2051或387-2052(下文称聚合物D)。
基于药物组合物的总重量,稀释剂或载体优选以至多90%,更优选70%重量的量存在。
当聚合物是亲水性聚合物时,易于吸收水和使水,例如由皮肤产生的水分渗透,然而聚合物可以是不溶于水的。聚合物可溶胀并释放大量药理活性物质,在pH4-7,优选皮肤pH,如约5.5的皮肤表面和角质层之间产生高浓度梯度的药理活性物质。如果需要,这些聚合物可溶于有机溶剂。
适宜聚合物的实例包括聚丙烯酰胺和其共聚物、聚乙烯吡咯烷酮(PVP)、乙酸乙烯酯/乙烯醇共聚物、聚乙烯醇(PVA)和其衍生物、乙基纤维素及其他纤维素和淀粉衍生物。
亲水性聚丙烯酸酯是优选的聚合物。聚丙烯酸酯可以是取代的,例如甲基丙烯酸酯。它们可以是市售的丙烯酸酯/甲基丙烯酸酯共聚物。其中的一些或所有酸基可以被酯化,例如被烷基(C1-10),更优选被具有1-4个碳原子的烷基,例如甲基或乙基酯化。
市售的该类聚合物实例包括:1)包含烷基(C1-4)酯基的甲基丙烯酸酯聚合物。聚合物基质优选是丙烯酸酯聚合物和甲基丙烯酸酯聚合物的混合物,例如重量比为5∶1-1∶1,如4∶1-2∶1,如3∶1,例如甲基丙烯酸丁酯和甲基丙烯酸甲酯的混合物。MW20000,如Rhm(德国Darmstadt)的Plastoid B(下文称聚合物B)。2)包含甲基和乙基中性酯基以及三甲基氨基乙基阳离子酯基的丙烯酸酯和甲基丙烯酸酯的聚合物。可有氯离子存在。平均分子量150000道尔顿。粘度(20℃),最高为15cP。折射率1.380-1.385。密度0.815-0.835g/cm3。阳离子酯基与中性烷基的比例为1∶20,得到的碱数为每克聚合物28.1mg KOH(购自Rhm,注册商标为Eudragit RL 100);或所述比例为1∶40,得到的碱数为每克聚合物15.2mg KOH(也购自Rhm,注册商标为Eudragit RS 100)。3)包含三甲基氨基乙基阳离子酯基和其他中性(C1-4)烷基酯基的甲基丙烯酸酯聚合物。可有氯离子存在。平均分子量150,000。粘度(20℃)为10cP。折射率1.38。密度0.815。碱数为每克聚合物180mg KOH(也购自Rhm,注册商标为Eudragit E 100,下文称之为聚合物C)。
如果需要,药物组合物可含有其他添加剂,例如增塑剂和/或软化剂,优选皮肤相容性表面活性剂,例如用以给药物组合物提供柔韧性,和/或部分或全部溶解化合物A。
添加剂的实例包括:1)聚氧乙烯脂肪醇醚。醇可以是C12-18的醇。HLB值可以为10-18。优选的实例是聚氧乙烯-(10)油基醚。适宜的醚具有的粘度(25℃)为约100cP,固化点为约16℃,HLB值为12.4并且酸数最大为1.0(购自德国AtlasChemie的注册商标为Brij 97的产品)。2)聚氧乙烯脱水山梨醇脂肪酸酯。脂肪酸可以是,例如C12-18的脂肪酸。HLB值可以是例如10-18。优选的实例是聚氧乙烯-(20)脱水山梨醇单油酸酯,例如购自德国Atlas Chemie的Tween 80(注册商标)。3)聚氧乙烯-(5-40)硬脂酸酯,如购自德国Atlas Chemie的Myrj(注册商标)。4)聚氧乙烯二醇脂肪醇醚,例如聚乙二醇-(6-25)鲸蜡基醚、甘油聚乙烯蓖麻醇酸酯、甘油聚乙二醇硬脂酸酯(注册商标为Cremophor,购自德国BASF)。5)MW为200-600道尔顿,如300或400道尔顿的聚氧乙烯二醇。6)具有至少一个羟基的聚(2-7)乙二醇甘油醚与脂族(C6-22)羧酸的酯,例如聚乙二醇-(7)甘油可可油酸酯(cocoate),如注册商标Cetiol HE,购自德国Henkel。7)己二酸低级烷基酯,例如己二酸二正丁基酯和己二酸二异丙基酯。8)甘油聚乙二醇蓖麻醇酸酯,如35摩尔环氧乙烷和蓖麻油的产物,例如注册商标为Cremophor EL,购自德国BASF。9)三醋精-(1,2,3)。10)脂肪酸,如C12-18脂肪酸。11)脂肪醇,如C12-18脂肪醇。
所需添加剂的量和种类取决于多种因素,例如表面活性剂的HLB值和所需药物的柔韧性。添加剂的量不会显著影响聚丙烯酸酯成膜的能力。通常,表面活性剂与聚合物的重量比可以为约1∶10-5∶1,如1∶10-1∶3。
但优选不存在这类添加剂,或者仅存在基于药物组合物总重量低于1%重量的这类添加剂。
药物组合物可含有皮肤渗透促进剂,如1-十二烷基氮杂环庚烷-2-酮(月桂氮酮)和N,N-二乙基-间-甲苯甲酰胺(DEET)。
皮肤渗透促进剂,和/或添加剂存在的量和种类取决于多种因素。皮肤渗透促进剂与亲水性聚合物的重量比通常为约1∶1-1∶10。表面活性剂和/或皮肤渗透促进剂的量可优选为药物组合物的约3-50%,优选20-40%重量。
但优选不存在这类添加剂或者仅存在基于药物组合物重量低于1%的这类添加剂。
如果需要,药物组合物可含有疏水性弹性体,如合成树脂。这类树脂是硬膏剂领域中常用的。适宜的树脂可包括非溶胀性丙烯酸酯树脂。如果需要,它们可以是粘性的。聚合物,如亲水性聚合物与树脂的重量比可以是1∶0.5-1∶10。树脂可含有改性剂、填充剂,如软化点为约50-100℃的物质。这类填充剂可以具有粘性或软化特性。这类填充剂的实例可包括树脂酸、树脂酸的甘油酯和邻苯二甲酸酯。
本发明的优选药物组合物包括a)20-40%重量的游离碱形式的化合物A:(S)-N-乙基-3-[1-(二甲氨基)乙基]-N-甲基-苯基-氨基甲酸酯,b)10-30%重量的聚甲基丙烯酸酯,c)40-60%重量的丙烯酸酯共聚物,和d)0.05-0.3%重量的α-生育酚。其中药物组合物的总重量为100%。
另一方面,本发明提供抗氧剂稳定含化合物A的药物组合物的用途。
在本申请人发现本发明的组合物中必需存在抗氧剂之前,一直都认为该组合物中抗氧剂的存在是非必需的。
本申请人发现,当抗氧剂选自生育酚和其酯(如生育酚乙酸酯)、棕榈酸抗坏血酸酯、抗坏血酸、丁基羟基甲苯、丁基羟基苯甲醚或没食子酸丙酯,优选α-生育酚或棕榈酸抗坏血酸酯时,出人意料地获得了有效的稳定作用。抗氧剂的存在量通常为药物组合物总重量的约0.01-约0.5%,如0.05-0.20%,如0.15%,更优选0.1%重量。
按照类似于下文实施例1描述的方式生产的含0.1%生育酚的本发明药物组合物在60℃的2个月应力试验中仅显示出1.3%的降解产物,与之相比不含生育酚的相应组合物显示出4.46%的降解产物。按照类似于下文实施例1描述的方式得到的含0.15%生育酚的本发明药物组合物在40℃和75%室内湿度下的3个月应力试验中仅显示出0.25%的降解产物,与之相比不含生育酚的组合物显示出1.09%的降解产物。
本发明的药物组合物优选经皮施用。
另一方面,本发明提供一种施用化合物A的经皮装置,该装置包括含化合物A的药物组合物、支持该药物组合物的背衬层、使该药物组合物固定于背衬层的粘合剂和可释放性接触所述粘合剂的释放衬垫。
药物组合物可方便地包含在一独立的薄层中,该层的上下表面可涂敷粘合剂层,粘合剂层的表面又提供接触背衬层和释放衬垫的表面。
包含在独立薄层中的药物组合物可在聚合物基质中含有化合物A和其他赋形剂,聚合物基质由上述的稀释剂或载体提供。如果需要,可将化合物A均匀分散或溶于所述聚合物基质中。
或者,经皮装置可以具有一种更简单的结构,其中含有药物组合物的聚合物基质另外还含有粘合剂。在这类简单的结构中,不需要上述的粘合剂层来分别固定背衬层和可释放性固定释放衬垫,因为含化合物A的聚合物基质是自粘的。
经皮装置中药物组合物层的厚度可以为20-100μm,更优选60-100μm。
背衬层优选由聚对苯二甲酸乙二醇酯PET箔制成。背衬层应足够厚以抵抗长时间贮存可能产生的和使用者皮肤运动产生的褶皱。背衬层的厚度一般为约10μm-15μm。
在一个优选的实施方案中,背衬层是由前述的PET层和EVA层组成的双层,如Scotch Pack 1012。
释放衬垫可以是一次性材料,用以在应用前保护药物组合物。释放衬垫通常由不可渗透化合物A的材料来生产且是粘性的。这种释放衬垫可容易地从粘合剂上剥下。优选的释放衬垫是由聚对苯二酸乙二醇酯PET箔制备的。释放衬垫,例如厚度约50-250μm,例如100μm的PET膜可应用在药物组合物上。
释放衬垫可以是聚硅氧烷涂敷的。所述涂层优选由本领域常用的任何氟代聚硅氧烷化合物形成,例如聚氟代烷基硅氧烷。
当用于使药物组合物固定在释放衬垫上的粘合剂本身不是聚硅氧烷粘合剂时,特别优选使用这类氟代聚硅氧烷涂层。
粘合剂可选自任何适于皮肤接触的粘合剂,并且优选是化合物A至少部分地溶于其中的粘合剂。粘合剂优选是压敏的接触型粘合剂。优选的粘合剂选自本领域已知的耐胺的聚硅氧烷压敏粘合剂,例如DowCorning Corporation生产的BIO-PSA粘合剂类,尤其是BIO-PSAQ7-4302。
在一种非常简单的经皮装置结构中,实际上粘合剂可以是聚合物基质的聚合物。
在另一个实施方案中,本发明提供了一种经皮装置,包括背衬层、在聚合物基质中含化合物A的层、释放衬垫层以及用于使所述经皮装置可释放性地固定于患者皮肤上且设置在在聚合物基质中含化合物A的层和释放衬垫之间的独立粘合材料层。
粘合材料优选是选自上述耐胺的聚硅氧烷压敏粘合剂的聚硅氧烷粘合剂。
所述另一实施方案的经皮装置一般包括:a)聚甲基丙烯酸酯背衬层,b)包含在丙烯酸酯共聚物中的游离碱形式的化合物A,c)BIO-PSA Q7-4302聚硅氧烷粘合剂层,d)释放衬垫。
本发明的经皮装置一般可采用简单的方式生产。溶剂蒸发方法可用于所述组合物。由此可将药物组合物的所有成分混合在溶剂,例如丙酮、乙酸乙酯或己烷中,并浇于可用作背衬层或释放衬垫的基质上。
上述经皮装置可方便地形成连续的片材,然后在使用前切割成任意所需尺寸或形状的贴剂。然而,如此形成的贴剂会使该层压体含药物组合物的层暴露在贴剂外缘处的大气中。
然而在另一个实施方案中,提供了形成的贴剂在贮存或应用期间药物组合物不暴露在大气中的经皮装置。这类贴剂还降低了化合物A受氧化影响的可能性。经皮装置可包括,例如连续的背衬层、连续的释放衬垫和位于这两层之间的独立部分中的药物组合物部分,使背衬层成形为使粘合剂可将其可释放性地固定于释放衬垫,以将所述药物组合物密封在由背衬层内表面和释放衬垫的内表面界定的袋中。该实施方案通常称为盖型贴剂(cover patch)。
上文描述的袋优选用粘合剂填充,以完全包封独立的药物组合物部分。粘合剂优选是上文描述的聚硅氧烷压敏粘合剂。
上文描述的所有经皮装置的一个任选特征是它们在药物组合物和释放衬垫之间包括一层粘合剂。其主要作用是固定释放衬垫而与装置的其余部分接触,以便在使用前保护药物组合物。然而,如果粘合剂是聚硅氧烷粘合剂,则该层另外还可作为可使化合物A以控制速率通过进入患者皮肤的膜。不希望受限于特定的理论,认为在贮存期间,均匀分散在聚合物基质中的化合物A基本上没有迁移进入聚硅氧烷粘合剂层的趋势。因此,化合物A在聚硅氧烷层中的浓度较低。但在使用中,被治疗者的皮肤与聚硅氧烷层相比,对化合物A显示出高得多的亲和性,聚硅氧烷层中起始低浓度的化合物A进入被治疗者的皮肤。聚硅氧烷层出人意料地防止了被治疗者应用该装置时突然接受高剂量的化合物A,相反地,促进了被治疗者中浓度的逐渐增高。
盖型贴剂经皮装置可方便地形成为连续片材或带材,在使用前沿着划分各装置的易分割区切割或撕开形成贴剂,但这类装置也可以独立的贴剂形式提供。
本发明的经皮装置通常具有,例如约为1-约80平方厘米,优选约10平方厘米的与皮肤有效接触的药物组合物面积且可以约每1-7天,优选1-3天一次的间隔应用。含36毫克化合物A的大至80平方厘米的本发明贴剂中36毫克游离碱形式的剂量可被良好地耐受,其中有12毫克被吸收。化合物A可,例如以约10平方厘米的贴剂中8毫克的剂量给药,每天一次。该贴剂可应用于,例如腹部、大腿、耳后或者肩部或上臂。
任选地形成经皮装置形式的本发明药物组合物可用于含化合物A的已知组合物适用的相同适应症。化合物A的确切施用量取决于多种因素,例如组合物的药物释放特性、体外和体内试验中观测的药物渗透率、所需作用时间、化合物A的形式以及皮肤与经皮组合物接触面积的大小和该单元固定于机体的部位。可通过常规生物利用度试验,比较将本发明组合物中的化合物A施用于完整皮肤后活性物质的血液水平与口服施用治疗有效量的该化合物后观测的化合物A的血液水平,确定组合物的量和,例如面积等。
起始剂量为1.5毫克,每天口服两次;然后在两周内该剂量增至3毫克,每天两次口服化合物A被良好耐受。较高的剂量也是可能的,例如每天两次,每次4.5毫克;甚至每天两次,每次6毫克。对经皮装置而言,耐受性看起来甚至更好,其中在24小时内吸收24毫克。
下列实施例说明本发明。实施例1
制备由下列成分组成(以重量计)的组合物(Ⅰ) (Ⅱ)化合物A 30% 30%聚合物 20%(A) 20%(D)甲基丙烯酸酯 49.85%(B) 49.85%(C)α-生育酚 0.15% 0.15%
将各成分加到乙酸乙酯中并混合,得到粘稠基质。将该基质涂铺在100μm的透明PET箔上形成60μm厚的膜。将15μm厚的PET箔释放衬垫应用在该干燥的基质上。将该贴剂切割面积为10、20、30或40平方厘米的贴剂。
在应用于皮肤之前,去掉衬垫。
本发明的组合物和装置提供了贮存稳定的系统。在室温贮存长达6个月后,测得的降解不明显。实施例2
按照实施例1,用棕榈酸抗坏血酸酯代替α-生育酚制备组合物。在室温贮存至少4个月后,测得的降解产物量不明显。实施例3
按照实施例1,用棕榈酸抗坏血酸酯和α-生育酚的混合物代替单独的α-生育酚制备组合物。在室温贮存至少4个月后,测得的降解产物量不明显。
Claims (13)
1.一种药物组合物,含有游离碱或酸加成盐形式的(S)-N-乙基-3-[1-(二甲氨基)乙基]-N-甲基-苯基-氨基甲酸酯(化合物A)和抗氧剂。
2.根据权利要求1的药物组合物,含有1-40%重量的游离碱或酸加成盐形式的化合物A。
3.根据权利要求1或2的药物组合物,其中抗氧剂是生育酚或其酯、抗坏血酸、丁基羟基甲苯、丁基羟基苯甲醚或者没食子酸丙酯,优选α-生育酚或棕榈酸抗坏血酸酯。
4.根据前述任一项权利要求的药物组合物,其中抗氧剂的存在量基于药物组合物重量为约0.01-约0.5%重量。
5.根据前述任一项权利要求的药物组合物,其中抗氧剂生育酚的存在量基于药物组合物重量为0.1%重量。
6.根据权利要求1的药物组合物,含有
a)20-40%重量的游离碱形式的化合物A,
b)10-30%重量的聚甲基丙烯酸酯,
c)40-60%重量的丙烯酸酯共聚物,和
d)0.05-0.3%重量的α-生育酚,
其中药物组合物的总重量为100%。
7.抗氧剂在稳定含化合物A的药物组合物中的用途。
8.根据权利要求7的用途,其中抗氧剂是生育酚或其酯、抗坏血酸、丁基羟基甲苯、丁基羟基苯甲醚或者没食子酸丙酯,优选α-生育酚或棕榈酸抗坏血酸酯。
9.根据权利要求7或8的用途,其中抗氧剂的存在量基于药物组合物重量为约0.01-约0.5%重量。
10.根据权利要求7-9任一项的用途,其中抗氧剂生育酚的存在量基于药物组合物重量为0.1%重量。
11.一种经皮装置,用于释放权利要求1-6任一项定义的药物组合物。
12.一种经皮装置,包括权利要求1定义的药物组合物、对该药物组合物提供支持的背衬层、与该背衬层接触并使该药物组合物固定于背衬层的粘合剂和可释放性接触所述粘合剂的释放衬垫。
13.一种经皮装置,包括背衬层、在聚合物基质中含有(S)-N-乙基-3-[1-(二甲氨基)乙基]-N-甲基-苯基-氨基甲酸酯的层、释放衬垫以及设置在在聚合物基质中含(S)-N-乙基-3-[1-(二甲氨基)乙基]-N-甲基-苯基-氨基甲酸酯的层和释放衬垫之间的独立粘合材料层,该层用于使所述经皮装置可释放性地固定于患者皮肤。
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GBGB9800526.7A GB9800526D0 (en) | 1998-01-12 | 1998-01-12 | Organic compounds |
GB9800526.7 | 1998-01-12 |
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CN1288375A true CN1288375A (zh) | 2001-03-21 |
CN1129427C CN1129427C (zh) | 2003-12-03 |
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US (1) | US6335031B1 (zh) |
EP (1) | EP1047409B1 (zh) |
KR (1) | KR100569051B1 (zh) |
CN (1) | CN1129427C (zh) |
AT (1) | ATE223711T1 (zh) |
AU (1) | AU745661B2 (zh) |
BR (1) | BR9906920A (zh) |
CA (1) | CA2315784C (zh) |
CZ (1) | CZ300598B6 (zh) |
DE (1) | DE69902875T2 (zh) |
DK (1) | DK1047409T3 (zh) |
ES (1) | ES2184408T3 (zh) |
GB (1) | GB9800526D0 (zh) |
HK (1) | HK1034036A1 (zh) |
HU (1) | HU227159B1 (zh) |
ID (1) | ID27503A (zh) |
IL (1) | IL137100A (zh) |
MX (1) | MXPA00006438A (zh) |
NO (1) | NO328390B1 (zh) |
NZ (1) | NZ505650A (zh) |
PL (1) | PL201328B1 (zh) |
PT (1) | PT1047409E (zh) |
RU (1) | RU2219926C2 (zh) |
SK (1) | SK284622B6 (zh) |
TR (2) | TR200101021T2 (zh) |
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JP2013537526A (ja) | 2010-07-21 | 2013-10-03 | スリーエム イノベイティブ プロパティズ カンパニー | 経皮接着剤組成物、デバイス、及び方法 |
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CN107412202A (zh) * | 2010-12-14 | 2017-12-01 | 绿叶制药股份公司 | 用于施用活性物质的经皮治疗系统 |
CN104602687A (zh) * | 2012-09-03 | 2015-05-06 | 尼普洛外用药品株式会社 | 贴剂 |
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