首页> 外文期刊>Life sciences >THE DEVELOPMENTAL INCREASE OF THE AT1A, BUT NOT THE AT1B, RECEPTOR MRNA LEVEL AT THE PREOPTIC AREA IN SPONTANEOUSLY HYPERTENSIVE RATS
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THE DEVELOPMENTAL INCREASE OF THE AT1A, BUT NOT THE AT1B, RECEPTOR MRNA LEVEL AT THE PREOPTIC AREA IN SPONTANEOUSLY HYPERTENSIVE RATS

机译:自发性高血压大鼠视前区AT1A的发育增加,但不是AT1B受体MRNA的增加

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To determine the possible involvement of the central angiotensin system in hypertension, the angiotensin II type-1 receptor subtype mRNA levels in the preoptic area (POA) and hypothalamus were measured by means of a reverse-transcriptase/polymerase chain reaction in spontaneously hypertensive rats (SHR), and the results were then compared with the findings in age-matched normotensive Wistar-Kyoto rats (WKY). In 4-week-old (prehypertensive stage) and 7-week-old (evolving stage) SKR, the AT1A and AT1B receptor subtype mRNA levels in the POA and hypothalamus did not show any significant difference between the SHR and WKY. However, in the 16-week-old SHR (hypertensive stage), AT1A receptor subtype mRNA at POA was approximately 2-fold higher than in the WKY, while the AT1B receptor subtype mRNA showed no difference. On the other hand, neither the AT1A nor the AT1B mRNA level at the hypothalamus were different between the 16-week-old SHR and WKY. These results suggest that the AT1A mRNA level, but not the AT1B mRNA level, increases in the POA in hypertensive stage of SHR and the increase may therefore be related in some way to the state of hypertension. [References: 44]
机译:为了确定中枢血管紧张素系统可能参与高血压,通过逆转录酶/聚合酶链反应在自发性高血压大鼠中测量了视前区(POA)和下丘脑中血管紧张素II-1型受体亚型的mRNA水平( SHR),然后将结果与年龄匹配的血压正常Wistar-Kyoto大鼠(WKY)的发现进行比较。在4周龄(高血压前期)和7周龄(发育期)SKR中,POA和下丘脑中的AT1A和AT1B受体亚型mRNA水平在SHR和WKY之间没有显示任何显着差异。但是,在16周龄的SHR(高血压期)中,POA处AT1A受体亚型的mRNA约比WKY高2倍,而AT1B受体亚型的mRNA没有差异。另一方面,在16周龄的SHR和WKY之间,下丘脑的AT1A和AT1B mRNA水平均没有差异。这些结果表明,在SHR高血压阶段,POA中AT1A mRNA水平升高,而AT1B mRNA水平升高,因此升高可能与高血压状态有关。 [参考:44]

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