Human leukocyte antigen G and miR‑148a are associated with the pathogenesis of intrahepatic cholestasis of pregnancy

Zhang,Xiaowen; Yu,Ling; Ding,Yiling

doi:10.3892/etm.2014.1986

December-2014 Volume 8 Issue 6

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December-2014 Volume 8 Issue 6

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Article

Human leukocyte antigen G and miR‑148a are associated with the pathogenesis of intrahepatic cholestasis of pregnancy

Authors:
- Xiaowen Zhang
- Ling Yu
- Yiling Ding
View Affiliations / Copyright

Affiliations: Department of Obstetrics and Gynecology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
Pages: 1701-1706
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Published online on: September 22, 2014

https://doi.org/10.3892/etm.2014.1986
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Abstract

Intrahepatic cholestasis of pregnancy (ICP) occurs mainly during the third trimester of gestation and is characterized by pruritus and elevated serum bile acid levels. The pathogenesis of this disease has yet to be elucidated. The nonclassical human leukocyte antigen G (HLA‑G) is a trophoblast‑specific molecule and is involved in the regulation of maternal immune response at the maternal‑fetal interface. MicroRNAs (miRNAs) have an important role in a number of physiological and pathological processes. However, the roles of HLA‑G and miRNAs in immune response in the pathogenesis of ICP have yet to be elucidated. In the present study, the expression of HLA‑G and miR‑148a in the placenta of patients with ICP was investigated. The mRNA and protein expression levels of HLA‑G were markedly reduced in the placenta of patients with ICP compared with the levels in healthy pregnant females, and were negatively correlated with serum total bile acid (TBA) levels. It was also observed that miR‑148a levels were markedly upregulated in the placenta and peripheral blood of patients with ICP. Furthermore, the mRNA and protein expression levels of HLA‑G in the placenta were negatively correlated with the miR‑148 levels in the placenta, but not in the peripheral blood, while the miR‑148a levels in the placenta were positively correlated with serum TBA levels. These results suggest that the downregulation of HLA‑G is probably caused by the upregulation of miR‑148a in the placenta, and miR‑148a in the placenta may contribute to the pathogenesis of ICP via the inhibition of HLA‑G expression.

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Journals

International Journal of Molecular Medicine

International Journal of Oncology

Molecular Medicine Reports

Oncology Reports

Experimental and Therapeutic Medicine

Oncology Letters

Biomedical Reports

Molecular and Clinical Oncology

World Academy of Sciences Journal

International Journal of Functional Nutrition

International Journal of Epigenetics

Medicine International

Human leukocyte antigen G and miR‑148a are associated with the pathogenesis of intrahepatic cholestasis of pregnancy

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