Coordinate Expression of Renin and Cyclooxygenase-2 in Rats with Two-kidney, One Clip and Deoxycorticosterone Acetate-Salt Hypertension

  • Lee, Jong-Un (Department of Physiology, Chonnam National University Medical School) ;
  • Oh, Yoon-Wha (Chonnam National University Research Institute of Medical Sciences) ;
  • Kim, Sun-Mi (Chonnam National University Research Institute of Medical Sciences)
  • 발행 : 2001.06.21

초록

The present study was aimed to examine whether the expression of renin is associated with that of cyclooxygenase-2 (COX-2) in the kidney. Male Sprague-Dawley rats were made two-kidney, one clip (2K1C) or deoxycorticosterone acetate (DOCA)-salt hypertensive, to stimulate or to inhibit the endogenous renin-angiotensin system, respectively. The expression of renin and COX-2 mRNA was determined in the cortex of the kidney by reverse transcription-polymerase chain reaction. 2K1C hypertensive rats showed an increased expression of renin as well as of COX-2 in the clipped kidney. The expression of renin was decreased in parallel with that of COX-2 in the contralateral non-clipped kidney. Removal of the renal arterial clip reversed the expression of both genes, along with the blood pressure, to the control level. On the other hand, DOCA-salt hypertension was associated with parallel decreases of renin and COX-2 expression. These results indicate that renin and COX-2 genes are coordinately expressed in the kidney.

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