JP6837944B2 - タペンタドールの非経口的投与 - Google Patents
タペンタドールの非経口的投与 Download PDFInfo
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- JP6837944B2 JP6837944B2 JP2017158324A JP2017158324A JP6837944B2 JP 6837944 B2 JP6837944 B2 JP 6837944B2 JP 2017158324 A JP2017158324 A JP 2017158324A JP 2017158324 A JP2017158324 A JP 2017158324A JP 6837944 B2 JP6837944 B2 JP 6837944B2
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- Prior art keywords
- composition
- tapentadol
- administration
- pain
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- GKCBAIGFKIBETG-UHFFFAOYSA-N tetracaine Chemical compound CCCCNC1=CC=C(C(=O)OCCN(C)C)C=C1 GKCBAIGFKIBETG-UHFFFAOYSA-N 0.000 description 1
- 238000011287 therapeutic dose Methods 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
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- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
- 229960002415 trichloroethylene Drugs 0.000 description 1
- 208000009935 visceral pain Diseases 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- GVJHHUAWPYXKBD-IEOSBIPESA-N α-tocopherol Chemical compound OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-IEOSBIPESA-N 0.000 description 1
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Description
a)注射用に、1Lの水に20gのタペンタドールHClを溶解し、塩化ナトリウムの添加によって等張性の条件を調節することにより、タペンタドールHCl溶液を調製した。前記溶液は5.4未満のpH値を有していた。したがって、水に溶解した場合、タペンタドールHClは弱酸性の特性を有する。
その後、多発性ニューロパシーの疼痛に対する本発明組成物の効果を以下のように調べた:
クエン酸塩で緩衝されたストレプトゾトシン含有溶液(用量:200mg/kg;第一の注射溶液)の単一の腹腔内注射によって、雄のC57/BL/6マウスにおいて糖尿病性痛覚過敏症を誘発させた。1−2週間後に、タペンタドールまたはビヒクルを含む第二の注射溶液5μLを髄腔内に注射し、ビヒクルを含む第三の注射5μlを脳室内に注射し、そしてマウスを50℃に維持されたホットプレートに置いて侵害防衛反応(後肢を舐める/振る、生殖器を舐める、ジャンピング)の数を記録した。カットオフ時間を2分に設定した。
例2に従って、しかしながら、第二の注射溶液を脳室内に注射し、ビヒクルを含む第三の注射溶液を髄腔内に注射する点を変更して、多発性ニューロパシーの疼痛に対する本発明組成物の効果を以下の注射溶液を使用して調べた:
例1に従って、しかしながら、タペンタドールまたはビヒクルを含む2つの注射溶液を同時に投与する点を変更して、多発性ニューロパシーの疼痛に対する本発明組成物の効果を調べた:一方は髄腔内(2.注射溶液)、他方は脳室内(3.注射溶液)。以下の注射溶液を使用した:
薬理学的な方法:
本発明の医薬組成物の超相加的効果(相乗効果)をもたらす成分(a)および(b)の重量比は、「Arch.Int.Pharmacodyn., 1957, 111:409‐419」に記載されるようなRandallおよびSelittoの下肢足底の知覚テスト(paw pressure test)によって決定することができ、これは炎症性疼痛のためのモデルである。文献の各部分は、参照により本明細書に組み込まれ、本願開示の一部を形成する。
成分(a)および(b)を含む本発明の医薬組成物の超相加的効果に関しての結果の解析は、いわゆる固定比率の組み合わせ(Tallarida JT, Porreca F, and Cowan A. Statistical analysis of drug−drug and site−site interactions with isobolograms. Life Sci 1989; 45: 947 − 961によるisobolographicな解析)の理論的な相加的ED50値と実験的に決定したED50値との統計的比較によって行なった。
適用経路は、タペンタドール(A)((−)−(1R,2R)−3−(3−ジメチルアミノ−1−エチル−2−メチル−プロピル)−フェノール)に関してはそれぞれカラゲーナン誘発およびCFA誘発炎症性疼痛における静脈内(i.v.)および腹腔内(i.p.)であり、リドカイン(塩酸リドカイン)に関しては両動物モデルにおける腹腔内(i.p.)である。
pH3およびpH8でのタペンタドールの抗菌効果
15mg/mLのタペンタドール(遊離塩基)濃度を有するタペンタドール溶液を調製した。pH値を、クエン酸および1N NaOH溶液を使用して、3または8の標的値にそれぞれ調節した。追加の緩衝系は添加しなかった。プラセボ溶液が抗菌効果自体を示さないことを保証するために、pH調節用に異なる量の1N NaOH溶液を使用する場合であっても、同一のpH値に焦点を当ててプラセボ溶液pH8を調製した。
更に、本発明は以下の実施の態様も包含する:
1.少なくとも5.4のpH値を有する、タペンタドールまたはその生理学的に許容可能な塩の非経口的投与に適合されている水性の医薬組成物。
2.局所および/または全身投与に適合されている、上記1に記載の組成物。
3.注射または注入による投与に適合されている、上記1または2に記載の組成物。
4.タペンタドールの濃度が組成物の全体積を基準として50mg/mL未満である、上記1〜3のいずれか1つに記載の組成物。
5.さらにバッファーを含む、上記1〜4のいずれか1つに記載の組成物。
6.いずれの保存剤も含まない、上記1〜5のいずれか1つに記載の組成物。
7.少なくとも0.25オスモル/Lの浸透圧モル濃度を有する、上記1〜6のいずれか1つに記載の組成物。
8.麻酔薬と組み合わせての投与に適合されている、上記1〜7のいずれか1つに記載の組成物。
9.上記1〜8のいずれか1つに記載の医薬組成物を含む、医薬製剤。
10.小児への投与に適合されている、上記9に記載の製剤。
11.デポー製剤である、上記9または10のいずれか一つに記載の製剤。
12.疼痛の治療に使用するための、上記1〜8のいずれか1つに記載の組成物、または上記9〜11のいずれか1つに記載の製剤。
13.疼痛が糖尿病性の神経因性疼痛、癌性疼痛、周術期のおよび/または術後の疼痛から成る群から選択される、上記12に記載の組成物。
14.投与が、筋肉内、静脈内、皮下、硬膜外、髄腔内、脊髄内および/または脳室内に行われる、上記12または13に記載の組成物。
15.投与されるべきタペンタドールの用量が患者によって調節される、上記12〜14のいずれか1つに記載の組成物。
Claims (17)
- 少なくとも4.0のpH値を有する、タペンタドールまたはその生理学的に許容可能な塩の非経口的投与に適合されている水性の医薬組成物であって、
タペンタドールの濃度が上記組成物の全体積を基準として50mg/mL未満であり、
該組成物が、クエン酸に由来する緩衝系であるバッファーをさらに含み、
該組成物が加速保存条件下において、少なくとも1月の有効期間を示し、
該組成物が、いずれの保存剤も含まないか、または保存剤を含み、その含有量は、タペンタドールの非存在下で上記医薬組成物を、その有効期間に関して十分に保存するために欧州薬局方(2010年バージョン)に従って必要とされる含有量の、最大で90%である、
上記医薬組成物。 - 前記医薬組成物が加速保存条件下において、少なくとも6月の有効期間を示す、請求項1に記載の組成物。
- 前記医薬組成物が周囲条件下において、少なくとも6月の有効期間を示す、請求項1または2に記載の組成物。
- 前記医薬組成物が周囲条件下において、少なくとも1週の使用中安定性を示す多回用投薬単位調製物である、請求項1〜3のいずれか1つに記載の組成物。
- 局所および/または全身投与に適合されている、請求項1〜4のいずれか1つに記載の組成物。
- 注射または注入による投与に適合されている、請求項1〜5のいずれか1つに記載の組成物。
- 少なくとも0.25オスモル/Lの浸透圧モル濃度を有する、請求項1〜6のいずれか1つに記載の組成物。
- 麻酔薬と組み合わせての投与に適合されている、請求項1〜7のいずれか1つに記載の組成物。
- 請求項1〜8のいずれか1つに記載の医薬組成物を含む、医薬製剤。
- 前記製剤が、1回よりも多い投与のためにカスタマイズされている多回用投薬単位形態である、請求項9記載の製剤。
- 前記製剤が、1を越える投薬単位を包含する、請求項9または10記載の製剤。
- 小児への投与に適合されている、請求項9〜11いずれか一つに記載の製剤。
- デポー製剤である、請求項9〜12のいずれか一つに記載の製剤。
- 疼痛の治療に使用するための、請求項1〜8のいずれか1つに記載の組成物、または請求項9〜13のいずれか1つに記載の製剤。
- 00疼痛が糖尿病性の神経因性疼痛、癌性疼痛、周術期のおよび/または術後の疼痛から成る群から選択される、請求項14に記載の組成物。
- 投与が、筋肉内、静脈内、皮下、硬膜外、髄腔内、脊髄内および/または脳室内に行われる、請求項14または15に記載の組成物。
- 投与されるべきタペンタドールの用量が患者によって調節される、請求項14〜16のいずれか1つに記載の組成物。
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