JP4350508B2 - ガバペンチンまたはその類似体とα−アミノアミドとを含む薬剤組成物およびその鎮痛用途 - Google Patents
ガバペンチンまたはその類似体とα−アミノアミドとを含む薬剤組成物およびその鎮痛用途 Download PDFInfo
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- JP4350508B2 JP4350508B2 JP2003524580A JP2003524580A JP4350508B2 JP 4350508 B2 JP4350508 B2 JP 4350508B2 JP 2003524580 A JP2003524580 A JP 2003524580A JP 2003524580 A JP2003524580 A JP 2003524580A JP 4350508 B2 JP4350508 B2 JP 4350508B2
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Classifications
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- 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
- A61K31/195—Carboxylic acids, e.g. valproic acid having an amino group
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- 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
- A61K31/16—Amides, e.g. hydroxamic acids
-
- 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
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
- A61K31/445—Non condensed piperidines, e.g. piperocaine
-
- 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
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- 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
- A61P25/04—Centrally acting analgesics, e.g. opioids
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- 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
- A61P25/08—Antiepileptics; Anticonvulsants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Description
α−アミノアミド、およびガバペンチンもしくはプレガバリンもしくはチアガビンまたはその薬剤として許容される誘導体は、それぞれのED50値の割合に基づく比で存在し、その比が、それぞれ、約1:1から約30:1または約1:1から約1:30の範囲の薬剤組成物が提供される。
(i)疾病の素因をもち得るが、まだ罹患しているとは診断されていない被験者に、発症するのを予防すること、
(ii)容態を阻止する、すなわちその発達を停止すること、または
(iii)容態を寛解する、すなわち疾病を軽減することを含む。
前記に定義した各α−アミノアミド(特にNW−1029、NW−1037およびNW−1043)とGBPの等効力の抗痛覚用量を同時投与した場合を調べ、本発明の組成物が付随する副作用を同時に増加させることなく、単独で投与した場合の各活性化合物が示す活性よりも大きく、かつ各活性化合物の活性の単純な相加性で期待されるものよりも大きい相乗作用を生じることを示そうとした。前に想起したように、動物におけるGBPの典型的な副作用は運動障害および運動失調である。
本発明の組成物の抗異痛作用を試験する手順
疼痛処置においてヒトへの効力に良好な相関がある本発明の組成物の相乗作用を検出および比較するのに使用される手順は、完全フロイントアジュバント(CFA)により誘導される単一関節炎ラット慢性疼痛モデルに見られる異痛の測定手順である(Butlerら、「ラットの慢性疼痛研究のための限定された関節炎モデル」、Pain;48:73−81、1992)。
成体雄ウィスターラット(体重175〜200g、Harlan−Nossan、イタリア)を、水および標準的なラット固形試料に自由に近づけるようにして別々のケージに一定温度(22±0.5℃)および相対湿度(60〜70%)で6.00amから6.00pmの明−暗期間で飼った。
炎症を、乳化剤であるパラフィンオイルとモノオレイン酸マンニドの混合物中に熱で死滅させ乾燥したマイコバクテリウム・ツベルクローシスを含む、完全フロイントアジュバント(CFA、シグマ−100μl)の左後足への足底内注射によりラットに誘導した。対照群の動物に、100μlの鉱油、不完全フロイントアジュバント(IFA、シグマ)を注射した。CFA注射により、注射の48時間後に開始された局所浮腫および炎症の領域が生じ、機械的引っ込み閾値は進行的に減少した。
ラットを、メッシュ金属床上の個々のプラスチックボックスに入れ、約30分間順応させた。剛性が対数的に増加する(2.83〜5.88×屈曲力(g)のLog10)一連の較正したフライ刺激毛(von Frey hair)を、アップダウン法を用いて脚に掛けた。各毛は、僅かに屈曲するだけの力で、脚に垂直に差し出し、約2〜3秒間保持した。陽性応答が認められた場合に(足を引っ込める、なめる、または振る)そのフィラメントを記録した。
ラットに、種々の用量のα−アミノアミド単独、GBP単独、α−アミノアミドとGBPの組合せ用量、または溶剤を全て経口投与した。投与量の容量は2ml/kgであった。投与材料は全て溶剤(蒸留水)中で調製し、薬物重量は遊離塩基として計算した。本発明の組成物では、α−アミノアミドおよびGBP(もしくはプレガバリンもしくはチアガビン)は両方共、それぞれのED50から選択した比の遊離塩基として秤量し、その後、適切な容量に溶かして、最終投与懸濁液を得た。
データは、1用量あたり1群あたり6匹中4匹の平均として示す。
ラットのロータロッド試験
ロータロッド試験は、ヒトにおけるCNSに関連した副作用、特に運動障害および運動失調を予測するものとして使用される確立されている方法である。
抗異痛活性の評価のための試験「von Frey」により、未処置の対照動物で得られた平均基線足引っ込め閾値は5.04±0.20Log[10×力(mg)]であり、これに対し、CFA処理ラットの平均ラット引っ込め閾値は有意に低かった:3.11±0.11Log[10×力(mg)]。溶剤(蒸留水)注射は、炎症の起こった足に抗異痛作用を全く及ぼさなかった。
カプセルは以下を含む:
NW−1029 13.3mg
GBP 204.4mg
タルク 5.7mg
コーンスターチ 19.6mg
微結晶セルロース 52.0mg
ステアリン酸マグネシウム 5.0mg
カプセルは以下を含む:
NW−1029 7.7mg
GBP 341.0mg
タルク 5.3mg
コーンスターチ 20.0mg
微結晶セルロース 23.0mg
ステアリン酸マグネシウム 3.0mg
カプセルは以下を含む:
NW−1029 31.0mg
GBP 52.5mg
タルク 3.5mg
コーンスターチ 15.0mg
微結晶セルロース 45.0mg
ステアリン酸マグネシウム 3.0mg
Claims (6)
- ガバペンチンまたはプレガバリンまたはそれらの薬剤として許容される無機酸もしくは有機酸との酸付加塩と、(S)−(+)−2−[4−(2−フルオロベンジルオキシ)ベンジルアミノ]プロパンアミド、(R)−(−)−2−[4−ベンジルオキシベンジルアミノ]−3−フェニル−N−メチルプロパンアミド、および(S)−(+)−2−[4−(3−フルオロベンジルオキシ)−ベンジルアミノ]−N−メチル−プロパンアミドの、場合により、単一異性体またはその混合物またはその薬剤として許容される無機酸もしくは有機酸との酸付加塩からなる群より選択されるα−アミノアミドとを含む、疼痛症状を処置するための薬剤組成物であって、
α−アミノアミドおよびガバペンチンまたはプレガバリンまたはそれらの薬剤として許容される無機酸もしくは有機酸との酸付加塩が、それぞれのED50値の割合に基づく比で存在し、その比が、それぞれ、1:1から30:1または1:1から1:30の範囲にある、前記薬剤組成物。 - α−アミノアミドおよびガバペンチンまたはプレガバリンが、それぞれのED50値の割合に基づく比にあり、その比が、それぞれ、1:1から9:1または1:1から1:9の範囲にある請求項1に記載の薬剤組成物。
- α−アミノアミドおよびガバペンチンまたはプレガバリンが、それぞれのED50値の割合に基づく比にあり、その比が、それぞれ、1:1から3:1または1:1から1:3の範囲にある請求項1または2に記載の薬剤組成物。
- ガバペンチンまたはその薬剤として許容される無機酸もしくは有機酸との酸付加塩、およびα−アミノアミドまたはその薬剤として許容される無機酸もしくは有機酸との酸付加塩を含む請求項1から3のいずれかに記載の薬剤組成物。
- ガバペンチンまたはその薬剤として許容される無機酸もしくは有機酸との酸付加塩を含み、α−アミノアミドが、(S)−(+)−2−[4−(2−フルオロベンジルオキシ)ベンジルアミノ]プロパンアミドまたはその薬剤として許容される無機酸もしくは有機酸との酸付加塩である請求項1から4のいずれかに記載の薬剤組成物。
- 疼痛症状を処置するための医薬を調製するための請求項1から5のいずれかに記載の薬剤組成物の使用。
Applications Claiming Priority (2)
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EP01121069 | 2001-09-03 | ||
PCT/EP2002/008910 WO2003020273A2 (en) | 2001-09-03 | 2002-08-09 | Pharmaceutical composition comprising gabapentin or an analogue thereof and an $g(a)-aminoamide and its analgesic use |
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EP (1) | EP1423168B1 (ja) |
JP (1) | JP4350508B2 (ja) |
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ES (1) | ES2253579T3 (ja) |
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IL (2) | IL160523A0 (ja) |
MX (1) | MXPA04002009A (ja) |
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GB9727523D0 (en) | 1997-12-31 | 1998-02-25 | Pharmacia & Upjohn Spa | Alpha-aminoamide derivatives useful as analgesic agents |
JP2002541215A (ja) | 1999-04-09 | 2002-12-03 | ユーロ−セルティック エス. ア. | ナトリウムチャネル遮断薬組成物およびその使用 |
US8048917B2 (en) | 2005-04-06 | 2011-11-01 | Xenoport, Inc. | Prodrugs of GABA analogs, compositions and uses thereof |
NZ531586A (en) | 2001-09-03 | 2005-09-30 | Newron Pharm Spa | Pharmaceutical composition comprising gabapentin or an analogue thereof and an alpha-aminoamide and its analgesic use |
EP1438956A1 (en) * | 2003-01-16 | 2004-07-21 | Newron Pharmaceuticals S.p.A. | Alpha-aminoamide derivatives useful as antimigraine agents |
CA2514581A1 (en) * | 2003-01-30 | 2004-08-12 | Dynogen Pharmaceuticals, Inc. | Methods of treating lower urinary tract disorders using sodium channel modulators |
US20040248979A1 (en) * | 2003-06-03 | 2004-12-09 | Dynogen Pharmaceuticals, Inc. | Method of treating lower urinary tract disorders |
KR101233711B1 (ko) * | 2003-08-25 | 2013-02-18 | 뉴론 파마슈티칼즈 에스. 피. 에이. | 항염증제로서 유용한 알파-아미노아미드 유도체 |
EP1533302A1 (en) * | 2003-11-21 | 2005-05-25 | Newron Pharmaceuticals S.p.A. | Histidine derivatives |
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