Vandekerckhove A, Miot F, Keppens S, De Wulf H
Afedling Biochemie, Campus Gasthuisberg, Fakulteit Geneeskunde, Katholieke Universiteit Leuven, Belgium.
Biochem J. 1989 Apr 15;259(2):609-11. doi: 10.1042/bj2590609.
Vasopressin does not induce glycogenolysis in rabbit hepatocytes; glucagon, angiotensin, phenylephrine and ATP are as potent as with rat hepatocytes, whereas isoprenaline is nearly 10000 times more potent in the rabbit. Binding studies of [3H]vasopressin reveal the complete absence of specific vasopressin receptors on rabbit liver plasma membranes. We verified that vasopressin acts as an antidiuretic and vasopressor agent in the rabbit. We conclude that there is a selective lack of V1 vasopressin receptors in rabbit liver.
血管加压素不会诱导兔肝细胞发生糖原分解;胰高血糖素、血管紧张素、去氧肾上腺素和三磷酸腺苷(ATP)在兔肝细胞中的作用与在大鼠肝细胞中一样有效,而异丙肾上腺素在兔中的效力几乎比在大鼠中强10000倍。[3H]血管加压素的结合研究表明,兔肝细胞膜上完全不存在特异性血管加压素受体。我们证实血管加压素在兔中作为抗利尿和升压剂起作用。我们得出结论,兔肝脏中选择性缺乏V1血管加压素受体。