ABSTRACT
AIM: To explore the effect of PKC activition on cardiac myocyte apoptosis and expression of bcl-2 during myocardial ischemia/reperfusion(I/R) in rats. METHODS: TUNEL,immunohistochemistry and in situ hybridization were used. RESULTS: The TUNEL data showed that the numbers of positive cardiac myocyte nucleus and the percentage of positive cardiac myocyte nucleus in PMA+IR 3 h group decreased significantly( P
ABSTRACT
AIM: To explore the effect of ischemic preconditioning on cardiac myocyte apoptosis and the expression of bcl-2 during myocardial ischemia/reperfusion in rats. METHODS: We use TUNEL,immunohistochemical and in situ hybridization(ISH) methods to detect the cardiac myocyte apoptosis and the expression of bcl-2 during myocardial ischemia/reperfusion in rats. RESULTS:① The numbers of positive cardiac myocyte nuclear and the percentage of positive cardiac myocyte nuclear in IP+I/R 3h group decreased significantly(P
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AIM: To study the effects of oxidized high-density lipoprotein (oxHDL) on the expression of monocyte chemoattractant protein-1(MCP-1) and intercellular adhesion molecule-1(ICAM-1) and intracellular free calcium concentration ([Ca 2+ ]i) level in cultured human umbilical venous endothelial cells(HUVECs). METHODS: The MCP-1 protein content in the medium of conditioned HUVEC was measured by ELISA, and the ICAM-1 on HUVECs was detected by indirect immunofluorescence, and [Ca 2+ ]i was determined by Fluo-3/AM, the injury of cells was observed by scanning electron microscopy (SEM).RESULTS: oxHDL could induce the expression of MCP-1 and ICAM-1 in HUVECs. In oxHDL group (HUVECs were incubated with 100 mg protein/L oxHDL for 24 h), the levels of MCP-1, ICAM-1 and [Ca 2+ ]i increased by 160%, 60% and 70% respectively compared with the control group ( P
ABSTRACT
AIM: To explore the effect of brief mesenteric artery occlusion (MAO) on cardiac myocyte apoptosis and bcl-2 expression during myocardial ischemia/reperfusion (I/R) in rats. METHODS: TUNEL,immunohistochemical and in situ hybridization(ISH) methods were applied in the present study. RESULTS: ① The numbers of positive cardiac myocyte nuclear and the percentage of positive cardiac myocyte nuclear in MAO+IR 3h group decreased significantly ( P