JP7417595B2 - てんかん重積状態の予防、軽減又は治療のためのカルバメート化合物の使用 - Google Patents
てんかん重積状態の予防、軽減又は治療のためのカルバメート化合物の使用 Download PDFInfo
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- JP7417595B2 JP7417595B2 JP2021516458A JP2021516458A JP7417595B2 JP 7417595 B2 JP7417595 B2 JP 7417595B2 JP 2021516458 A JP2021516458 A JP 2021516458A JP 2021516458 A JP2021516458 A JP 2021516458A JP 7417595 B2 JP7417595 B2 JP 7417595B2
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- status epilepticus
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- carbamate compound
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Description
(式中、R1及びR2は、それぞれ独立して、水素、ハロゲン、C1-C8アルキル、C1-C8ハロアルキル、C1-C8チオアルコキシ及びC1-C8アルコキシからなる群から選ばれ、A1及びA2の一つは、CHであり、他の一つはNである)
で示されるカルバメート化合物、又はその薬学的に許容可能な塩、溶媒和物又は水和物を含む、てんかん重積状態の予防、軽減又は治療用薬剤を提供する。
以下で、本願発明について、実施例を通じてより詳細に説明する。しかし、以下の実施例は、一つ以上の実施形態を例示的に説明することのみを意図しており、本発明の範囲を限定することを意図していない。
カルバミン酸(R)-1-(2-クロロフェニル)-2-テトラゾール-2-イル)エチルエステル(以下、「試験化合物」という)を国際公開番号WO2010/150946号の製造例50に記載された方法に従って製造した。
実験動物
雄マウス(C57BL/6、24-26g)を使用した。実験動物は、12時間の明暗周期(午後7時から午前7時までの照明)に飼育され、温度22~25℃、相対湿度40~60%に維持された。食料と水は自由にアクセスできるようにした。
全細胞パッチ-クランプ記録のために、マウスの脳を切除し、海馬切片(310mm)を酸素化した人工脳脊髄液(ACSF)(124mM NaCl、3.0m MKCl、1.23mM NaH2PO4、2.2mM CaCl2、1.2mM MgCl2、26mM NaHCO3、及び10mM グルコース、pH7.4)で調製した。すべての実験は、視覚的に誘導されたCA1錐体神経細胞で行われ、ガラスピペット(4-5MΩ)が記録に使用された。組織を1時間培養した後、1つの切片を記録チャンバーに沈め、酸素化された人工脳脊髄液(32℃;95%O2/5%CO2)で継続的に灌流した。
初期のSLE(SLE発生直後):低Mg2+ACSFの適用後、約20~30分で観察されるSLEの測定。
後期SLE(低Mg2+ACSFでの1時間の培養後)全細胞破裂の直後に観察されるSLEの測定。
試験化合物の効果を測定するための化合物処理は、SLEの発生10~15分後に開始された。
試験化合物の効果は、低Mg2+ACSFの処理後、及び試験化合物処理前に発生したSLE値との比較値(%)であり、平均±標準誤差として表された。スチューデントのt検定を使用して、データにp<0.05の相がある場合、統計学的有意性が認められた。
実験動物
雄マウス(C57BL/6、21-24g)を使用した。実験動物は、12時間の明暗周期(午後7時から午前7時までの照明)で飼育され、温度22~25℃、相対湿度40~60%に維持された。食料と水は自由にアクセスできるようにした。動物は無作為に以下の群に分けられた。
-対照ビヒクルとして30%PEG300を10mL/kg容量で腹腔内単回投与した10匹のマウス
-試験化合物を20mg/kg(10mL/kg)用量で腹腔内に単回投与した9匹マウス
-対照群として、30%PEG300を10mL/kg容量で腹腔内に単回投与した13匹のマウス
-陽性対照群として、200mg/kg(10mL/kg)用量で単回投与した12匹のマウス
-試験化合物を25mg/kg(10mL/kg)用量で腹腔内に単回投与した13匹マウス
メチルスコポラミンを1mg/kg(10mL/kg)濃度でビヒクル(0.9%生理食塩水)に溶解し、首の後ろに皮下投与した。20分後、ピロカルピンを320mg/kg(10mL/kg)濃度でビヒクル(食塩水、0.9%)に溶解し、腹腔内投与した。
てんかん重積状態の発生直後に薬物投与された実験群では、てんかん重積状態の発生直後の薬物投与後に動物の行動を修正されたRacineスコア(Ronald J Racine, Modification of seizure activity by electrical stimulation: II.Motor seizure, Electroencephalography and Clinical Neurophysiology: II., Volume 32, Issue 3, 1972, Pages 281-294)により動物の持続性強直間代発作行動及び発生回数を50分間観察した。
てんかん重積状態の発生直後の薬物投与された実験群では、試験化合物を20mg/kg(10mL/kg)用量で腹腔内投与した。
てんかん重積状態の発生直後の薬物投与実験群では、化合物の効果は平均±標準誤差として表された。t検定を使用してデータにp<0.05の差がある場合、統計学的有意性が認められた。
Claims (16)
- R1及びR2は、それぞれ独立して、水素、ハロゲン及びC1-C8アルキルからなる群から選ばれる、請求項1に記載の薬剤。
- てんかん重積状態が、脳卒中(stroke)、代謝障害(metabolic derangements)、中枢神経系感染症(CNS infections))、外傷性脳損傷(traumatic brain injury)、アルコール乱用(alcohol abuse)、脳腫瘍(brain tumors)、慢性脳梗塞病変及び既にてんかんを患っている患者の抗てんかん薬の濃度低下(low AED level)から選ばれる一つ以上によって誘発されるものである、請求項1に記載の薬剤。
- てんかん重積状態が、けいれん性てんかん重積状態(convulsive status epilepticus)である、請求項1に記載の薬剤。
- てんかん重積状態が、非けいれん性てんかん重積状態(non-convulsive status epilepticus)である、請求項1に記載の薬剤。
- 哺乳動物投与用である、請求項1~6のいずれか1項に記載の薬剤。
- 式(1)のカルバメート化合物の治療有効量が、遊離形態の1日1回投与に基づいて、50~500mgである、請求項1~6のいずれか1項に記載の薬剤。
- R1及びR2が、それぞれ独立して、水素、ハロゲン及びC1-C8アルキルからなる群から選ばれる、請求項9に記載の医薬組成物。
- てんかん重積状態が、脳卒中(stroke)、代謝障害(metabolic derangements)、中枢神経系感染症(CNS infections)、外傷性脳損傷(traumatic brain injury)、アルコール乱用(alcohol abuse)、脳腫瘍(brain tumors)、慢性脳梗塞病変及び既にてんかんを患っている患者の抗てんかん薬の濃度低下(low AED level)から選ばれる一つ以上によって誘発されるものである、請求項9に記載の医薬組成物。
- てんかん重積状態が、けいれん性てんかん重積状態(Convulsive status epilepticus)である、請求項9に記載の医薬組成物。
- てんかん重積状態が、非けいれん性てんかん重積状態(Non-convulsive status epilepticus)である、請求項9に記載の医薬組成物。
- 哺乳動物投与用である、請求項9~14のいずれか1項に記載の医薬組成物。
- 式(1)のカルバメート化合物の治療有効量が、遊離形態の1日1回投与に基づいて、50~500mgである、請求項9~14のいずれか1項に記載の医薬組成物。
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PCT/KR2019/012184 WO2020060252A1 (ko) | 2018-09-21 | 2019-09-20 | 중첩발작의 예방, 경감 또는 치료에 대한 카바메이트 화합물의 용도 |
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