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Adverse factors increase preeclampsia-like changes in pregnant mice with abnormal lipid metabolism

摘要:

Background Preeclampsia (PE) is a multifactorial pregnancy complication.Maternal underlying condition and adverse factors both influence the pathogenesis of PE.Abnormal lipid metabolism as a maternal underlying disease may participate in the occurrence and development of PE.This study aimed to observe the effects of adverse factors on PE-like symptoms of pregnant mice with genetic abnormal lipid metabolism.Methods Apolipoprotein C-Ⅲ (ApoC3) transgenic mice with abnormal lipid metabolism were subcutaneously injected with L-arginine methyl ester (L-NAME) or normal saline (NS) daily starting at Day 7 or 16 of pregnancy (ApoC3+L-NA and ApoC3+NS groups),and wild-type (WT) mice served as a control (WT+L-NA and WT+NS groups).All mice were subdivided into early and late subgroups by injection time.The mean arterial pressure (MAP) and urinary protein were measured.Pregnancy outcomes,including fetal weight,placental weight,live birth rate,and fetal absorption rate,were analyzed.Pathologic changes in the placenta were observed by hematoxylin-eosin staining.One-way analysis of variance,t-test,and x2 test were used for statistical analysis.Results MAP significantly increased for ApoC3+NS groups compared with WT+NS groups (P <0.05),without significant difference in urine protein.Following L-NAME injection,MAP and urinary protein significantly increased for ApoC3+L-NA and WT+L-NA compared with the corresponding NS groups (P <0.05),and the increase for ApoC3+L-NA was more obvious.Urinary protein levels in early ApoC3+L-NA and WT+L-NA significantly increased compared with the corresponding late groups (P <0.05).Fetal absorption rate significantly increased and fetal and placental weights significantly decreased in early ApoC3+L-NA and WT+L-NA compared with the corresponding NS groups (P <0.05),without significant difference in late ApoC3+L-NA and WT+L-NA groups.Fetal weight in early ApoC3+L-NA was significantly lower than in early WT+L-NA group (P <0.05).Morphologic examination of placentas from early ApoC3+L-NA and WT+L-NA groups showed varying degrees of fibrinoid necrosis.Conclusions ApoC3 transgenic mice with abnormal lipid metabolism showed gestational hypertension.Adverse factors and early effect time could aggravate the PE-like symptoms for ApoC3 transgenic mice.

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作者单位: Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China [1]
期刊: 《中华医学杂志(英文版)》2014年127卷15期 2814-2818页 SCIMEDLINEISTICCSCDBP
栏目名称: ORIGINAL ARTICLES
DOI: 10.3760/cma.j.issn.0366-6999.20140450
发布时间: 2014-09-02
基金项目:
a grant from the National Natural Science Foundation of China the Specialized Research Fund for the Doctoral Program of Higher Education from the Ministry of Education of China
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