Elevation of (pro) renin and (pro) renin receptor in preeclampsia
J Thomason, M Reyes, SR Allen… - American journal of …, 2015 - academic.oup.com
American journal of hypertension, 2015•academic.oup.com
OBJECTIVE Preeclampsia (preE), a syndrome of hypertension, proteinuria, and edema, has
many elusive triggers. The renin–angiotensin system has been implicated in preE
pathogenesis. In this study, we test the hypothesis that (pro) renin levels are increased in
preE patients and that levels of (pro) renin and (pro) renin receptor ((P) RR) are elevated in
a rat model of preE. METHODS We recruited 30 preE and 43 normal pregnant consenting
patients. We used normally pregnant rats (NP, n= 10) and pregnant rats receiving weekly …
many elusive triggers. The renin–angiotensin system has been implicated in preE
pathogenesis. In this study, we test the hypothesis that (pro) renin levels are increased in
preE patients and that levels of (pro) renin and (pro) renin receptor ((P) RR) are elevated in
a rat model of preE. METHODS We recruited 30 preE and 43 normal pregnant consenting
patients. We used normally pregnant rats (NP, n= 10) and pregnant rats receiving weekly …
OBJECTIVE
Preeclampsia (preE), a syndrome of hypertension, proteinuria, and edema, has many elusive triggers. The renin–angiotensin system has been implicated in preE pathogenesis. In this study, we test the hypothesis that (pro)renin levels are increased in preE patients and that levels of (pro)renin and (pro)renin receptor ((P)RR) are elevated in a rat model of preE.
METHODS
We recruited 30 preE and 43 normal pregnant consenting patients. We used normally pregnant rats (NP, n = 10) and pregnant rats receiving weekly injections of desoxycorticosterone acetate and whose drinking water was replaced with 0.9% saline (preE, n = 10). Plasma and placental levels of (pro)renin were assayed by ELISA. Placental and kidney (P)RR was measured both by immunoblotting and immunohistochemistry.
RESULTS
The mean plasma (pro)renin of 27.1±5.2 in preE patients differs from that in patients without preE: 14.8±5.2ng Ang I/ml/hour (P < 0.0001). In rats, both plasma (NP: 22.7±4.3 and preE: 49.2±10.0ng Ang I/ml/hour) and placental (NP: 152±24 and preE: 302±39ng/g tissue) levels of (pro)renin were higher (P < 0.001) in preE compared to NP rats. (P)RR expression was greater (P < 0.05) in placental tissue of preE rats, while kidney (P)RR expression was similar.
CONCLUSION
Elevated levels of circulating (pro)renin have been observed in preE patients and in a rat model of preE. We also found the increased expression of placental (P)RR in preE rats.
Oxford University Press