调查 Chaiqin Chengqi 煎的效果(, CQCQD )(CCKR1 ) 在 cholecystokinin 上,受体 1 调停了在有尖锐坏死的胰腺炎(ANP ) 的老鼠的胰腺的 acinar 房间的信号 transduction。
Objective: To investigate the effect of Chaiqin Chengqi Decoction (柴芩承气汤,CQCQD) on cholecystokinin receptor 1 (CCKR1)-mediated signal transduction of pancreatic acinar cell in rats with acute necrotic pancreatitis (ANP). Methods: Twenty-seven Sprague-Dawley rats were randomized into three groups: the control group, the ANP group, and the CQCQD group (9 in each group). ANP rats were induced by two intraperitoneal injections of 8% L-arginine (pH=7.0, 4.4 g/kg) over a 2-h period. Rats were treated with 1.5 mL/100 g body weight of CQCQD (CQCQD group) or physiological saline (control and ANP groups) at 2 h interval. And 6 h after induction, pancreatic tissues were collected for histopathological examination. Pancreatic acinar cells were isolated for determination of CCKR1 mRNA and protein expression, phospholipase C (PLC) and inositol-1,4,5-triphosphate (IP3), and determination of fluorescence intensity (FI) as a measure of intracellular calcium ion concentration [Ca2+]i. Results: The pancreatic histopathological score (6.2± 1.1) and the levels of PLC (1,187.2±228.2μg/mL) and IP3 (872.2±88.4 μg/mL) of acinar cells in the ANP group were higher than those in the control (2.8± 0.4, 682.5± 121.8 μ g/mL, 518.4 ± 115.8 μ g/mL) and the CQCQD (3.8± 0.8, 905.3± 78.5 μ g/mL, 611.0±42.5μ g/mL) groups (P〈0.05). [Ca2+]i FI for the ANP group (34.8± 27.0) was higher than that in the control (5.1 ± 2.2) and CQCQD (12.6± 2.5) groups (P〈0.05). The expression of pancreatic acinar cell CCKR1 mRNA in the ANP group was up-regulated (expression ratio=1.761; ,0=0.024) compared with the control group. The expression of pancreatic acinar cell CCKR1 mRNA in the CQCQD group was down-regulated (expression ratio=0.311; P=0.035) compared with the ANP group. The ratio of gray values of the CCKR1 and β-actin in the ANP group (1.43±0.17) was higher than those in the control (0.70 ± 0.15) and CQCQD (0.79± 0.1