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Archives of Gynecology and Obstetrics

, Volume 298, Issue 3, pp 631–638 | Cite as

Magnesium sulphate can alleviate oxidative stress and reduce inflammatory cytokines in rat placenta of intrahepatic cholestasis of pregnancy model

  • Fei Han
  • Linhao Xu
  • Yaqing Huang
  • Tianqi Chen
  • Tiancheng Zhou
  • Liwei Yang
General Gynecology
  • 25 Downloads

Abstract

Purpose

In our study, we try to investigate whether magnesium sulphate (MgSO4) could provide protection against oxidative damage and inflammatory response in rat placenta of intrahepatic cholestasis of pregnancy (ICP) model.

Methods

The rat model of ICP was established by injecting s.c. 17α-ethinyl estradiol (EE) daily for 5 days. MgSO4, as an therapeutic drug for ICP, was injected i.p. daily for 3 days. Age-matched pregnant rats served as controls. The level of serum total bile acid (TBA) was measured. The data including the number and weight of offsprings on day 20 of pregnancy were collected. We observed ultrastructural changes of mitochondria and endoplasmic reticulum (ER) in placenta by transmission electron microscope. The antioxidant proteins peroxiredoxin-6 (Prdx6) and nuclear factor erythroid 2-related factor-2 (Nrf2) were analyzed by Western Blot. The inflammatory cytokines including IL-1β, TNF-α and IFN-γ were investigated by real-time PCR (RT-PCR) and enzyme-linked immune-sorbent assay (ELISA).

Results

The weight of offsprings on day 20 of pregnancy increased in ICP rats treated with MgSO4 (ICP + MG group) compared with that in ICP rats (ICP group). However, the level of TBA was not reduced. The damage of mitochondria and ER was observed in placenta, which was much more slighter in ICP + MgSO4 group as compared with that in ICP group. Prdx6 and Nrf2 were increased, while the inflammatory cytokines including IL-1β, TNF-α and IFN-γ were decreased in ICP + MgSO4 group compared with that in ICP group.

Conclusions

MgSO4 had beneficial effect on improving growth of offsprings in rat model of ICP. The protective effect of MgSO4 on alleviating oxidative damage and inflammatory response in placenta may play an important role in the process. MgSO4 may improve the function of placenta.

Keywords

Intrahepatic cholestasis of pregnancy Magnesium sulphate Placenta Oxidative stress Inflammatory cytokines 

Notes

Acknowledgements

We thanked Zhejiang Provincial People’s Hospital and Zhejiang Chinese Medical University for providing assists for our research. We thanked the Department of Health of Zhejiang Province for providing fund for our research.

Author contributions

FH: data collection and analysis, manuscript writing. LHX: data analysis, manuscript revision. YQH: data collection and analysis. TQC: literature collection, data collection. TCZ: data collection. LWY: protocol development, manuscript revision.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflicts of interest with the contents of this article

Ethical approval

This study protocol was approved by the Animal Care Committee of Zhejiang Chinese Medical University. All the experiments were performed according to the approved National Institutional Guidelines for the Care and Use of Laboratory Animals.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Zhejiang Chinese Medical UniversityHangzhouChina
  2. 2.Hangzhou Medical CollegeHangzhouChina
  3. 3.Zhejiang Provincial People’s HospitalHangzhouChina
  4. 4.People’s Hospital of Shaoxing CityShaoxingChina

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