應(yīng)用3H-哌唑嗪結(jié)合分析法測(cè)定人正常肝組織膜α1-腎上腺素受體濃度,以了解影響其受體結(jié)合的實(shí)驗(yàn)條件。結(jié)果:在膜蛋白濃度約為1.5mg/ml、3H-哌唑嗪濃度為0.1~2.0 nmol/L、pH 7.4、37℃反應(yīng)20分鐘的適宜條件下,8例正常肝組織膜α1-腎上腺素受體與配基結(jié)合均呈飽和狀態(tài),受體的最大結(jié)合容量(Bmax)、平衡解離常數(shù)(Kd)、組織受體最大結(jié)合容量(RMC)和Hill系數(shù)分別為142.1±14.1 fmol/mg蛋白、0.2382±0.0548 nM、739.0±167.6 fmol/g肝和0.90±0.03。本實(shí)驗(yàn)結(jié)果提示:應(yīng)用3H-哌唑嗪結(jié)合分析法測(cè)定人肝組織膜α1受體時(shí)實(shí)驗(yàn)條件十分重要,在肝臟病理生理研究中應(yīng)充分考慮。
引用本文: 張有成,冷希圣,彭吉潤(rùn). 放射配基結(jié)合法測(cè)定人肝組織膜α1-腎上腺素受體的條件選擇. 中國(guó)普外基礎(chǔ)與臨床雜志, 1998, 5(4): 202-204. doi: 復(fù)制
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