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Int. J. Mol. Sci. 2015, 16(5), 10986-10996; doi:10.3390/ijms160510986

Prenatal Exposure to Lipopolysaccharide Results in Myocardial Fibrosis in Rat Offspring

1
Institute of Materia Medical, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
2
Department of Pharmacy, Xiangyang Central Hospital, Xiangyang 441021, China
These authors contributed equally to this work.
*
Authors to whom correspondence should be addressed.
Academic Editor: H. W. M. Niessen
Received: 28 March 2015 / Accepted: 6 May 2015 / Published: 14 May 2015
(This article belongs to the Special Issue Improvement of Cardiac Function in Heart Failure)
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Abstract

The epigenetic plasticity hypothesis indicates that exposure during pregnancy may cause adult-onset disorders, including hypertension, myocardial infarction and heart failure. Moreover, myocardial fibrosis coincides with hypertension, myocardial infarction and heart failure. This study was designed to investigate the effects of prenatal exposure to lipopolysaccharide (LPS) on myocardial fibrosis. The result showed that at six and 16 weeks of age, the LPS-treated offspring exhibited increased collagen synthesis, an elevated cardiac index (CI), higher mRNA levels of TIMP-2 and TGFβ and a reduced mRNA level of MMP2. The protein levels corresponded to the mRNA levels. The offspring that were prenatally treated with pyrrolidine dithiocarbamic acid (PDTC), an inhibitor of NF-κB, displayed improvements in the CI and in collagen synthesis. Moreover, PDTC ameliorated the expression of cytokines and proteins associated with myocardial fibrosis. The results showed that maternal inflammation can induce myocardial fibrosis in offspring during aging accompanied by an imbalance of TIMP-2/MMP2 and TGFβ expression. View Full-Text
Keywords: myocardial fibrosis; lipopolysaccharide; pyrrolidine dithiocarbamic acid; pregnant myocardial fibrosis; lipopolysaccharide; pyrrolidine dithiocarbamic acid; pregnant
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Chen, X.; Tang, Y.; Gao, M.; Qin, S.; Zhou, J.; Li, X. Prenatal Exposure to Lipopolysaccharide Results in Myocardial Fibrosis in Rat Offspring. Int. J. Mol. Sci. 2015, 16, 10986-10996.

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