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Nantong, China

Chen X.,Nantong University | Yang X.,Nantong University | Wu R.,Nantong University | Chen W.,Chongqing Medical University | And 3 more authors.
Journal of Obstetrics and Gynaecology Research | Year: 2016

Aim: The aim of this study was to investigate the therapeutic effects and mechanism of Wharton jelly-derived mesenchymal stem cells (WJ-MSC) in a spontaneous-abortion rat model. Methods: An abortion model was established using intravenous injection of bromocriptine. WJ-MSC were isolated and cultured from Wharton jelly of the human umbilical cord. The pathologic changes of placenta decidual tissues were observed after hematoxylin–eosin staining. The embryo absorption rate was counted. The protein and mRNA levels of interleukin (IL)-10, interferon (IFN)-γ and IL-17 in each group were tested by enzyme-linked immunosorbent assay, Western blot and quantitative real-time polymerase chain reaction. Results: After bromocriptine injection, decidual cells degenerated and the connections between them loosened. Furthermore, some of the decidual cells were necrotic and the nuclei had disappeared. However, the transplantation of a large population of WJ-MSC prevented these damages from occurring. The changes of levels of IL-10, IFN-γ and IL-17 in serum and placenta decidual tissues induced by bromocriptine were well restored by a high, but not a low, dose of WJ-MSC engraft. Conclusion: WJ-MSC can ameliorate early pregnancy loss. The mechanism may be related to its upregulation of IL-10 and downregulation of IFN-γ and IL-17. © 2016 Japan Society of Obstetrics and Gynecology

Chen X.,Tumor Hospital of Nantong | Chen X.,Nanjing Medical University | Jiang J.,Nanjing Medical University | Shen H.,Nanjing Medical University | Hu Z.,Nanjing Medical University
Journal of Biomedical Research | Year: 2011

Epidemiological and laboratory-based studies have identified infection with one of 15 high-risk human papillo-mavirus (HPV) types as a necessary but not sufficient cause of cervical cancer. The prevalence of genital HPV infections is high in young women, but most of the infections regress without interventions. Host genetic variations in genes involved in immune response pathways may be related to HPV clearance, and HPV E6/E7 oncoproteins interacting or downstream genes, both coding and non-coding, may contribute to the outcome of high risk HPV infection and cervical cancer. Of specific interest for this review has been the selection of genetic variants in genes involved in the above-referred pathways with a summary of their applications in association studies. Because the supportive and opposing data have been reported in different populations, well-designed international collaborative studies need to be conducted to define the consistency of the associations, paving the way to better define the patients at high risk of developing cervical cancer. © 2011 The Editorial Board of Journal of Biomedical Research.

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