Expression of thrombin and its associated protein in cerebellum of human and rat after intracerebral hemorrhage.
- Author:
Zhi-yi ZHANG
1
;
Ji-ping QI
;
Hong ZHU
;
Yue-jia SONG
;
He WU
;
Ying JIA
;
Guang-mei ZHANG
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Aged; Aged, 80 and over; Animals; Cerebellum; metabolism; Cerebral Hemorrhage; metabolism; Female; Humans; Immunohistochemistry; In Situ Hybridization; Male; Middle Aged; Rats; Rats, Sprague-Dawley; Receptor, PAR-1; genetics; metabolism; Serpin E2; genetics; metabolism; Thrombin; genetics; metabolism
- From: Chinese Medical Journal 2010;123(15):2077-2081
- CountryChina
- Language:English
-
Abstract:
BACKGROUNDIntracerebral hemorrhage (ICH) can cause brain damage through a number of pathways. The purpose of the study was to explore the effect of thrombin, protease nexin-1 (PN-1) and protease activated receptor-1 (PAR-1) in rat and human cerebellum after ICH.
METHODSA model of ICH was produced in adult Sprague-Dawley rats by direct injection of autologous blood (50 microl) into caudate nucleus. Patients with injured hemorrhage were also enrolled in this study. Different expressions of thrombin, PAR-1, PN-1 were detected in rat and human cerebellum by immunohistochemistry and in situ hybridization.
RESULTSIn rat cerebellum, thrombin protein significantly increased at 6 hours and reached the maximum 2 days after ICH. The expression of PAR-1 protein reached the maximum at 24 - 48 hours, and then began to decrease. The expression of PN-1 protein reached the maximum at 3 hours, decreased somewhat after that and increased a little at 5 days after ICH. While in human cerebellum, the changing tendency of thrombin, PAR-1 and PN-1 was almost conform to the rat.
CONCLUSIONIn cerebellum, thrombin can activate PAR-1 expression after ICH, and PN-1 appears quickly after ICH in order to control the deleterious effect of thrombin.
