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- W2293469643 abstract "In anesthetized rats increasing ureteral pressure results in an increase in ipsilateral afferent renal nerve activity and a reflex increase in contralateral urine flow rate and urinary sodium excretion that is dependent on intact prostaglandin synthesis. Activation of renal pelvic substance P receptors contributes to the renorenal reflex responses to increased ureteral pressure. Because these data suggested that renal sensory receptors could be activated by both prostaglandins and substance P we examined whether activation of renal sensory receptors by substance P was dependent on intact prostaglandin synthesis. The renal pelvis was perfused with capsaicin, 2.5 micrograms/ml, or substance P, 4 micrograms/ml, before and during renal pelvic perfusion with the prostaglandin synthesis inhibitor indomethacin, 50 micrograms/ml. Indomethacin reduced the peak ipsilateral afferent renal nerve activity responses to capsaicin and substance P by 83 +/- 15% and 81 +/- 8%, respectively, as well as the contralateral diuretic and natriuretic responses. We also examined the effects of renal pelvic administration of indomethacin on the responses to renal pelvic perfusion with bradykinin. Bradykinin, 20 micrograms/ml, increased peak ipsilateral afferent renal nerve activity by 197 +/- 47% and contralateral urine flow rate and urinary sodium excretion by 31 +/- 6 and 20 +/- 6%, respectively. Indomethacin reduced the ipsilateral afferent renal nerve activity response by 76 +/- 9% and abolished the contralateral diuretic and natriuretic responses to bradykinin. We conclude that renal sensory receptor activation by capsaicin, substance P, and bradykinin is dependent on intact renal prostaglandin synthesis.(ABSTRACT TRUNCATED AT 250 WORDS)" @default.
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- W2293469643 date "1993-09-01" @default.
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- W2293469643 title "Role of prostaglandins in renal sensory receptor activation by substance P and bradykinin" @default.
- W2293469643 doi "https://doi.org/10.1152/ajpregu.1993.265.3.r544" @default.
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