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. 1987 Sep;410(1-2):55-62.
doi: 10.1007/BF00581896.

Tachyphylaxis of juxtaglomerular epithelioid cells to angiotensin II. Differences between the electrical membrane response and renin secretion

C P Bührle  1 , E Hackenthal, R Nobiling, O Skøtt, L Baumbach, R Taugner
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Tachyphylaxis of juxtaglomerular epithelioid cells to angiotensin II. Differences between the electrical membrane response and renin secretion

C P Bührle et al. Pflugers Arch. 1987 Sep.

Abstract

A study has been made of desensitization of the depolarizing response to angiotensin II of juxtaglomerular epithelioid and vascular smooth muscle cells in the mouse kidney afferent arteriole, of media cells from the mesenteric artery as well as of cultured smooth muscle and mesangial cells. In all cell types, desensitization to this effect of angiotensin II was observed. There was no cross-desensitization between angiotensin II and other depolarizing agonists. Hence, it is concluded that this desensitization is specific, i.e. of the tachyphylaxis type. Substances interfering with receptor recycling, such as chloroquine and monensin, did not block the recovery of the cells from desensitization after removal of the octapeptide. Desensitization to the action of angiotensin II was also observed with respect to its vasoconstrictor effect in the isolated perfused rat kidney. In contrast there was no desensitization of renin secretion in the isolated perfused rat kidney, nor in isolated hydronephrotic mouse tissue, nor in microdissected rat glomeruli.

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References

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