應用3H-哌唑嗪結合分析法測定人正常肝組織膜α1-腎上腺素受體濃度,以了解影響其受體結合的實驗條件。結果: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合均呈飽和狀態(tài),受體的最大結合容量(Bmax)、平衡解離常數(shù)(Kd)、組織受體最大結合容量(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。本實驗結果提示:應用3H-哌唑嗪結合分析法測定人肝組織膜α1受體時實驗條件十分重要,在肝臟病理生理研究中應充分考慮。
引用本文: 張有成,冷希圣,彭吉潤. 放射配基結合法測定人肝組織膜α1-腎上腺素受體的條件選擇. 中國普外基礎與臨床雜志, 1998, 5(4): 202-204. doi: 復制
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- 3. Michalopoulos G, Cianciulli HD, Novotny AR, et al. Liver regeneration studies with rat hepatocytes in primary culture. Cancer Res, 1982; 42(8)∶4673.
- 4. Williams LT, Mullikin D, Lefkowitz RJ. Identification of αadrenergic receptors in uterine smooth muscle membranes by 3Hdihydroergocryptine binding. J Biol Chem, 1976; 251(22)∶6915.
- 5. Bradford MM. A rapid and sensitive method for quantitation of microgram quantities of protein utilizing the principle of proteindye binding. Anal Biochem, 1976; 72(2)∶248.
- 6. 夏宗勤主編.實驗核醫(yī)學與核藥學.第1版.上海:同濟大學出版社, 1989∶220~240.
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- 8. Kawai Y, Powell A, Arinze IJ. Adrenergic receptors in human liver plasma membranes: predominance of beta 2and alpha 1receptor subtypes. J Clin Endocrinol Metab, 1986; 62(5)∶827.
- 9. Hwang TL, Lau YT, Huang SF,et al. Changes of α1adrenergic receptors in human liver during intraabdominal sepsis. Hepatology, 1994; 20(3)∶638.