OBJECTIVE: The aim of this study was to investigate a possible association between hydrogen peroxide and human leukocyte antigen G (HLA-G) in preeclampsia. STUDY DESIGN: We explored the correlation between HLA-G and hydrogen peroxide in preeclamptic (n = 30) and normotensive (n = 30) placentas, which was confirmed by in vitro experiments. Furthermore, RNA interference was used to explore the influence of HLA-G on the proliferation, apoptosis and invasion of HTR-8/SVneo cells when exposed to hydrogen peroxide. RESULTS: We found an inverse correlation between hydrogen peroxide and HLA-G expression in preeclamptic placentas. High levels of hydrogen peroxide could down-regulate HLA-G expression in HTR-8/SVneo. Compared with HLA-G knockdown HTR-8/SVneo, increased proliferation inhibition, higher apoptosis, and decreased cell invasion were found in the cell expressing HLA-G when exposed to hydrogen peroxide. CONCLUSION: Our findings highlight that high levels of hydrogen peroxide can down-regulate HLA-G expression in trophoblasts during preeclampsia and trophoblasts expressing HLA-G are vulnerable to oxidative stress.
OBJECTIVE: The aim of this study was to investigate a possible association between hydrogen peroxide and human leukocyte antigen G (HLA-G) in preeclampsia. STUDY DESIGN: We explored the correlation between HLA-G and hydrogen peroxide in preeclamptic (n = 30) and normotensive (n = 30) placentas, which was confirmed by in vitro experiments. Furthermore, RNA interference was used to explore the influence of HLA-G on the proliferation, apoptosis and invasion of HTR-8/SVneo cells when exposed to hydrogen peroxide. RESULTS: We found an inverse correlation between hydrogen peroxide and HLA-G expression in preeclamptic placentas. High levels of hydrogen peroxide could down-regulate HLA-G expression in HTR-8/SVneo. Compared with HLA-G knockdown HTR-8/SVneo, increased proliferation inhibition, higher apoptosis, and decreased cell invasion were found in the cell expressing HLA-G when exposed to hydrogen peroxide. CONCLUSION: Our findings highlight that high levels of hydrogen peroxide can down-regulate HLA-G expression in trophoblasts during preeclampsia and trophoblasts expressing HLA-G are vulnerable to oxidative stress.
Authors: Piya Chaemsaithong; Roberto Romero; Adi L Tarca; Steven J Korzeniewski; Alyse G Schwartz; Jezid Miranda; Ahmed I Ahmed; Zhong Dong; Sonia S Hassan; Lami Yeo; Tinnakorn Tinnakorn Journal: J Matern Fetal Neonatal Med Date: 2014-09-29
Authors: Tinnakorn Chaiworapongsa; Roberto Romero; Steven J Korzeniewski; Juan Pedro Kusanovic; Eleazar Soto; Jennifer Lam; Zhong Dong; Nandor G Than; Lami Yeo; Edgar Hernandez-Andrade; Agustín Conde-Agudelo; Sonia S Hassan Journal: Am J Obstet Gynecol Date: 2013-01-17 Impact factor: 8.661
Authors: Matthew H Loichinger; Dena Towner; Karen S Thompson; Hyeong Jun Ahn; Gillian D Bryant-Greenwood Journal: Placenta Date: 2016-03-08 Impact factor: 3.481