尾加压素受体GPR14在大鼠心血管系统及脑内的表达

Expression of urotensinⅡreceptor GPR14 in cardiovasculature and brain of rats

目的 :观察尾加压素 (U )受体 GPR14在 SD大鼠心血管系统及脑内的表达。 方法 :采用半定量逆转录 -聚合酶链反应 (RT- PCR)检测 GPR14。 结果 :在心血管系统中 ,大鼠颈总动脉、胸主动脉、左心房及左心室均表达 GPR14m RNA,其中心室表达丰度最高 ;在中枢神经系统中 ,大鼠小脑、大脑皮质、下丘脑及海马均表达 GPR14m RNA,其中小脑表达丰度较高。结论 :U 受体 GPR14在大鼠心血管系统及脑组织中都有表达 ,提示 U 在心血管及中枢神经活动中发挥重要作用。

Objective: To observe the expression of the G-protein-coupled-receptor 14 (GPR14), urotensinⅡreceptor, in the cardiovascular system and brain of SD rats. Methods: Semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR) was used to detect the GPR14 mRNA. Results: In cardiovascular system, GPR14 mRNA was detected in the left ventricle, left atrium, thoratic aorta and carotid aorta. The highest level of expression was found in the left ventricle. In the brain, GPR14 mRNA was detected in cortex, hippocampus, hypothalamus and cerebellum, and higher level of expression was found in the cerebellum. Conclusion: GPR14 mRNA expression is found in the cardiovascular and neural tissues of tested rat, suggesting that urotensinⅡ may play an important role in cardiovasculature and central nervous activity.