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Maternal Obesity and its Effect on Placental Cell Turnover.
MedLine Citation:
PMID:  23270521     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Abstract Background: Maternal obesity is a frequent obstetric risk factor, linked with short- and long-term consequences for mother and child, including fetal overgrowth, growth restriction and stillbirth. The mechanisms underlying these pathologies remain unknown but likely involve the placenta. Aims: To study placental cell turnover in relation to maternal body mass index (BMI). Methods: Term placental villous tissue was randomly sampled from 24 pregnancies, with a range of maternal BMI of 19.5-49.6. Immunohistochemistry was performed for hCG, Ki67 and M30 and image analysis used to calculate syncytiotrophoblast area and proliferative and apoptotic indices. Results were compared categorically between women of BMI 18.5-24.9 (normal), BMI 30.0-39.9 (obese class 1&2) and BMI 40+ (obese class 3), and continuously against BMI; p < 0.05 by Kruskal-Wallis test or linear regression was considered statistically significant. Results: Increased maternal BMI was associated with categorical (normal vs. obese class 3 and obese class 1&2 vs. obese class 3, both p < 0.05) and continuous (r(2) = 0.24, p = 0.016) reductions in the proliferative index and a continuous reduction (r(2) = 0.17, p = 0.047) in the apoptotic index. Discussion: Maternal obesity is associated with a dose-dependent reduction in placental villous proliferation and apoptosis which may increase susceptibility to adverse pregnancy outcomes.
Authors:
LE Higgins; Ta Mills; Sl Greenwood; Ej Cowley; Cp Sibley; Rl Jones
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-27
Journal Detail:
Title:  The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians     Volume:  -     ISSN:  1476-4954     ISO Abbreviation:  J. Matern. Fetal. Neonatal. Med.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101136916     Medline TA:  J Matern Fetal Neonatal Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1 Maternal and Fetal Health Research Centre, Institute of Human Development, University of Manchester, Manchester Academic Health Science Centre, St. Mary's Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester, M13 9WL, United Kingdom.
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