<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Zhou, Cissy Chenyi</style></author><author><style face="normal" font="default" size="100%">Ahmad, Shakil</style></author><author><style face="normal" font="default" size="100%">Mi, Tiejuan</style></author><author><style face="normal" font="default" size="100%">Abbasi, Shahrzad</style></author><author><style face="normal" font="default" size="100%">Xia, Lingwei</style></author><author><style face="normal" font="default" size="100%">Day, Mary-Clare</style></author><author><style face="normal" font="default" size="100%">Ramin, Susan M</style></author><author><style face="normal" font="default" size="100%">Ahmed, Asif</style></author><author><style face="normal" font="default" size="100%">Kellems, Rodney E</style></author><author><style face="normal" font="default" size="100%">Xia, Yang</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Autoantibody from women with preeclampsia induces soluble Fms-like tyrosine kinase-1 production via angiotensin type 1 receptor and calcineurin/nuclear factor of activated T-cells signaling.</style></title><secondary-title><style face="normal" font="default" size="100%">Hypertension</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Hypertension</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Animals</style></keyword><keyword><style  face="normal" font="default" size="100%">Autoantibodies</style></keyword><keyword><style  face="normal" font="default" size="100%">Calcineurin</style></keyword><keyword><style  face="normal" font="default" size="100%">Cells, Cultured</style></keyword><keyword><style  face="normal" font="default" size="100%">Female</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Immunoglobulin G</style></keyword><keyword><style  face="normal" font="default" size="100%">Lymphocyte Activation</style></keyword><keyword><style  face="normal" font="default" size="100%">Mice</style></keyword><keyword><style  face="normal" font="default" size="100%">Mice, Inbred C57BL</style></keyword><keyword><style  face="normal" font="default" size="100%">NFATC Transcription Factors</style></keyword><keyword><style  face="normal" font="default" size="100%">Pre-Eclampsia</style></keyword><keyword><style  face="normal" font="default" size="100%">Pregnancy</style></keyword><keyword><style  face="normal" font="default" size="100%">Receptor, Angiotensin, Type 1</style></keyword><keyword><style  face="normal" font="default" size="100%">Signal Transduction</style></keyword><keyword><style  face="normal" font="default" size="100%">Solubility</style></keyword><keyword><style  face="normal" font="default" size="100%">T-Lymphocytes</style></keyword><keyword><style  face="normal" font="default" size="100%">Trophoblasts</style></keyword><keyword><style  face="normal" font="default" size="100%">Vascular Endothelial Growth Factor Receptor-1</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2008 Apr</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">51</style></volume><pages><style face="normal" font="default" size="100%">1010-9</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Preeclampsia is a pregnancy-specific hypertensive syndrome that causes substantial maternal and fetal morbidity and mortality. Recent evidence indicates that maternal endothelial dysfunction in preeclampsia results from increased soluble Fms-like tyrosine kinase-1 (sFlt-1), a circulating antiangiogenic protein. Factors responsible for excessive production of sFlt-1 in preeclampsia have not been identified. We tested the hypothesis that angiotensin II type 1 (AT(1)) receptor activating autoantibodies, which occur in women with preeclampsia, contribute to increased production of sFlt-1. IgG from women with preeclampsia stimulates the synthesis and secretion of sFlt-1 via AT(1) receptor activation in pregnant mice, human placental villous explants, and human trophoblast cells. Using FK506 or short-interfering RNA targeted to the calcineurin catalytic subunit mRNA, we determined that calcineurin/nuclear factor of activated T-cells signaling functions downstream of the AT(1) receptor to induce sFlt-1 synthesis and secretion by AT(1)-receptor activating autoantibodies. AT(1)-receptor activating autoantibody-induced sFlt-1 secretion resulted in inhibition of endothelial cell migration and capillary tube formation in vitro. Overall, our studies demonstrate that an autoantibody from women with preeclampsia induces sFlt-1 production via angiotensin receptor activation and downstream calcineurin/nuclear factor of activated T-cells signaling. These autoantibodies represent potentially important targets for diagnosis and therapeutic intervention.</style></abstract><issue><style face="normal" font="default" size="100%">4</style></issue><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/18259044?dopt=Abstract</style></custom1></record></records></xml>