[An experimental study on brain-gut peptide receptors in brains of rats with hepatic encephalopathy].
Zhonghua Wai Ke Za Zhi
; 32(11): 643-6, 1994 Nov.
Article
em Zh
| MEDLINE
| ID: mdl-7774399
ABSTRACT
By means of radioligand binding assay, two brain-gut peptide, somatostatin (SS) and vasoactive intestinal peptide (VIP), receptors in crude synaptosomal membranes of brain were investigated in rats with hepatic encephalopathy (HE) and in controls. In HE rats and in controls, the maximal binding capacity (Bmax) were 238.0 +/- 14.2 and 200.0 +/- 11.3 fmol/mg of protein, the dissociation constant (Kd) was 3.99 +/- 0.22 and 3.89 +/- 0.34 nM respectively for SS receptors. The Bmax values of VIP receptors in HE rats and in controls were 9.56 +/- 0.29 and 10.92 +/- 0.44 fmol/mg of protein, the Kd values were 0.28 +/- 0.01 and 0.29 +/- 0.02 nM, respectively. Increased Bmax values of SS receptors (P < 0.005) and decreased Bmax values of VIP receptors (P < 0.002) were observed in HE rats as compared with those in controls. The results suggest that changes of brain-gut peptide receptors in brains play a significant role in the pathogenesis of HE.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Encéfalo
/
Encefalopatia Hepática
/
Receptores de Somatostatina
/
Receptores de Peptídeo Intestinal Vasoativo
Tipo de estudo:
Etiology_studies
Limite:
Animals
Idioma:
Zh
Revista:
Zhonghua Wai Ke Za Zhi
Ano de publicação:
1994
Tipo de documento:
Article