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2014 ; 64
(4
): 852-9
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gab.com Text
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English Wikipedia
Vasopressin in preeclampsia: a novel very early human pregnancy biomarker and
clinically relevant mouse model
#MMPMID25001273
Santillan MK
; Santillan DA
; Scroggins SM
; Min JY
; Sandgren JA
; Pearson NA
; Leslie KK
; Hunter SK
; Zamba GK
; Gibson-Corley KN
; Grobe JL
Hypertension
2014[Oct]; 64
(4
): 852-9
PMID25001273
show ga
Preeclampsia, a cardiovascular disorder of late pregnancy, is characterized as a
low-renin hypertensive state relative to normotensive pregnancy. Because other
nonpregnant low-renin hypertensive disorders often exhibit and are occasionally
dependent on elevated arginine vasopressin (AVP) secretion, we hypothesized a
possible use for plasma AVP measurements in the prediction of preeclampsia.
Copeptin is an inert prosegment of AVP that is secreted in a 1:1 molar ratio and
exhibits a substantially longer biological half-life compared with AVP, rendering
it a clinically useful biomarker of AVP secretion. Copeptin was measured
throughout pregnancy in maternal plasma from preeclamptic and control women.
Maternal plasma copeptin was significantly higher throughout preeclamptic
pregnancies versus control pregnancies. While controlling for clinically
significant confounders (age, body mass index, chronic essential hypertension,
twin gestation, diabetes mellitus, and history of preeclampsia) using
multivariate regression, the association of higher copeptin concentration and the
development of preeclampsia remained significant. Receiver operating
characteristic analyses reveal that as early as the sixth week of gestation,
elevated maternal plasma copeptin concentration is a highly significant predictor
of preeclampsia throughout pregnancy. Finally, chronic infusion of AVP during
pregnancy (24 ng per hour) is sufficient to phenocopy preeclampsia in C57BL/6J
mice, causing pregnancy-specific hypertension, renal glomerular endotheliosis,
proteinuria, and intrauterine growth restriction. These data implicate AVP
release as a novel predictive biomarker for preeclampsia very early in pregnancy,
identify chronic AVP infusion as a novel and clinically relevant model of
preeclampsia in mice, and are consistent with a potential causative role for AVP
in preeclampsia in humans.