JP6099574B2 - 外傷性脳損傷を処置する方法 - Google Patents
外傷性脳損傷を処置する方法 Download PDFInfo
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- JP6099574B2 JP6099574B2 JP2013552693A JP2013552693A JP6099574B2 JP 6099574 B2 JP6099574 B2 JP 6099574B2 JP 2013552693 A JP2013552693 A JP 2013552693A JP 2013552693 A JP2013552693 A JP 2013552693A JP 6099574 B2 JP6099574 B2 JP 6099574B2
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Description
爆風による過度の圧力が、頭蓋骨を通して脳に伝達されるとする証拠が増えている。これにより、脳の聴覚中枢、例えば脳幹、側頭葉、および視床への傷害など、外傷性脳損傷(TBI)を誘発する可能性を生じ、難聴、めまい、および耳鳴などの症状を示す可能性がある。特に顕著なことは、爆風関連のTBIが、非爆風関連のTBIに比較して、有意に高い割合(60%)で難聴および耳鳴を生じるという観察である。同様に、蝸牛神経核、下丘、内側膝状体および一次聴覚皮質など、強度の音響または騒音により誘発される中枢聴覚構造の変化が報告されている。
本発明は、騒音による耳鳴および外傷性脳損傷、ならびに酸化ストレス、プログラム細胞死、または炎症プロセスに関連する脳損傷を処置する方法を提供する。外傷性脳損傷(TBI)は、外部力により引き起こされた、脳機能の変化または脳病理の他の証拠である。TBIを引き起こす外部力として、非限定的に、透過的損傷(脳への物体の透過)、および非透過的もしくは非開放性損傷、例えば爆風もしくは圧力への暴露(爆風によるTBI)、物体による頭部打撲、または騒音への暴露(騒音によるTBI)が挙げられる。本発明は、耳鳴および外傷的脳損傷の処置における2,4−ジスルホニル−α−フェニルtertブチルニトロンの機能性、および、2,4−ジスルホニル−α−フェニルtertブチルニトロンとN−アセチルシステイン(NAC)とを組み合わせることによる相乗効果を実証する。本開示の残り部分の目的のために、2,4−ジスルホニル−α−フェニルtertブチルニトロンは、2,4−ジスルホニルPBNまたはHPN−07と称する。
この実施例の目的は、2,4−ジスルホニルPBN(HPN−07)およびNACを含む組成物が、背側蝸牛神経核の騒音による外傷性脳損傷を示す分子変化を回復させるのに効果的であることを実証することである。
この実施例において、細胞型に特異的なシナプス活性マーカであるプレセレベリン、ならびに神経細胞マーカであるPEP−19(カートホイール細胞マーカ)およびNeuNに加え、透過型電子顕微鏡試験(TEM)を用いて、105dB SPLオクターブ帯域の騒音暴露後4時間目に開始した4−ヒドロキシ−α−フェニルブチルニトロン、NACおよびALCAR(4−OHPBN+NAC+ALCAR)を含む組成物の非存在下および存在下、暴露後10日目のチンチラのDCNにおけるシナプス変性を検査した。
この実施例の目的は、爆風暴露後の海馬および皮質における様々な脳損傷バイオマーカに対する、NACと2,4−ジスルホニルPBN(HPN−07)との組み合わせの影響を実証することである。
この実施例の目的は、血液脳関門透過性に対するHPN−07およびNACの影響を検証することである。
この実施例の目的は、騒音によるTBIを生じる海馬および嗅内皮質への損傷を処置する際の、2,4−ジスルホニルPBNの長期影響を決定することである。
Claims (17)
- 外傷性脳損傷の処置用の組成物であって、
前記組成物は、2,4−ジスルホニルα−フェニルtert−ブチルニトロンおよびN−アセチルシステインを含み、
前記外傷性脳損傷は、騒音への暴露または爆風への暴露により誘発されたものである、組成物。 - 前記外傷性脳損傷が、非開放性脳損傷である、請求項1に記載の組成物。
- 経口投与される、請求項1または2に記載の組成物。
- 前記組成物は、生物体が外傷性脳損傷を受けた1〜4時間後に投与される、請求項1〜3のいずれか1項に記載の組成物。
- 前記組成物が、アセチル−L−カルニチン、グルタチオンモノエチルエステル、エブセレン、D−メチオニン、カルバマチオンおよびスゼト・シラー(Szeto−Schiller)ペプチドからなる群より選択される1種以上の化合物を更に含む、請求項1〜4のいずれか1項に記載の組成物。
- 外傷性脳損傷の処置用の組成物であって、
前記組成物は、2,4−ジスルホニルα−フェニルtert−ブチルニトロンと、N−アセチルシステイン、アセチル−L−カルニチン、グルタチオンモノエチルエステル、エブセレン、D−メチオニン、カルバマチオン、およびスゼト・シラーペプチドからなる群より選択される1種以上の化合物と、を含み、
前記外傷性脳損傷が、騒音への暴露により誘発される非開放性脳損傷である、組成物。 - 外傷性脳損傷の処置用の組成物であって、
前記組成物は、2,4−ジスルホニルα−フェニルtert−ブチルニトロンと、N−アセチルシステイン、アセチル−L−カルニチン、グルタチオンモノエチルエステル、エブセレン、D−メチオニン、カルバマチオン、およびスゼト・シラーペプチドからなる群より選択される1種以上の化合物と、を含み、
前記外傷性脳損傷が、爆風への暴露により誘発される非開放性脳損傷である、組成物。 - 経口投与される、請求項6または7に記載の組成物。
- 前記組成物は、生物体が外傷性脳損傷を受けた1〜4時間後に投与される、請求項6〜8のいずれか1項に記載の組成物。
- 耳鳴の処置用の組成物であって、
前記組成物は、2,4−ジスルホニルα−フェニルtert−ブチルニトロンおよびN−アセチルシステインを含み、
前記耳鳴は、騒音への暴露または爆風への暴露により誘発されたものである、組成物。 - 経口投与される、請求項10に記載の組成物。
- 前記組成物が、アセチル−L−カルニチン、グルタチオンモノエチルエステル、エブセレン、D−メチオニン、カルバマチオンおよびスゼト・シラーペプチドからなる群より選択される1種以上の化合物を更に含む、請求項10または11に記載の組成物。
- 生物体が外傷性脳損傷を受けた1〜4時間後に投与される、請求項10〜12のいずれか1項に記載の組成物。
- 外傷性脳損傷を有する生物体における耳鳴の処置用の組成物であって、
前記組成物は、2,4−ジスルホニルα−フェニルtert−ブチルニトロンと、N−アセチルシステイン、アセチル−L−カルニチン、グルタチオンモノエチルエステル、エブセレン、D−メチオニン、カルバマチオン、およびスゼト・シラーペプチドからなる群より選択される1種以上の化合物と、を含み、
前記耳鳴は、騒音への暴露または爆風への暴露により誘発されたものである、組成物。 - 経口投与される、請求項14に記載の組成物。
- 生物体の騒音への暴露または爆風への暴露の1〜4時間後に投与される、請求項14または15に記載の組成物。
- 中枢神経系における化合物の生物学的利用率を増加させるための、2,4−ジスルホニルα−フェニルtert−ブチルニトロンを含む組成物であって、
前記化合物は前記組成物の投与と同時またはその後に投与され、
前記化合物は、N−アセチルシステイン、アセチル−L−カルニチン、グルタチオンモノエチルエステル、エブセレン、D−メチオニン、カルバマチオンおよびスゼト・シラーペプチドからなる群より選択される1種以上の化合物である、組成物。
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