Efefct of adoptive transfer of 5 AzaD-induced re gulator T cells on outcomes of gestation in abortion-prone murine matings / 中国免疫学杂志

Objective:To investigate the effect of the adoptive transfer of CD4+CD25+Foxp3+regulatory T cells ( iTregs) induced by 5-aza-2′-deoxycytidine (5AzaD) on pregnant outcome of the abortion-prone mice.Methods:Sixty cases of female CBA/J × male DBA/2J abortion-prone matings were taken as study group,the CD4+T cells from spleen of twenty female CBA/J mice were separated by magnetic activated cell sorting (MACS),5AzaD was applied to the conversion of CD4+CD25-T cells to iTregs,the expression of Foxp3 in Tregs was characterized by flow cytometry analysis before and after epigenetic modification.The purified iTregs were injected into abortion-prone mice on day 1 or 4 of pregnancy,respectively,which were used as therapy groups,and then the embryo resorption rate was counted on day 14 of pregnancy.Results:After the treatment of 5AzaD,the percentage of iTregs in CD4+T cells was (41.50±8.03)%.The embryonic absorption rates of the two therapy groups were 10.47%(on day 1 of pregnancy) and 21.69%(on day 4 of pregnancy) ,respectively ( P<0.05 ) .Conclusion: Epigenetic modication of CD4+CD25-T cells may solve the problem of nTregs deficiency,particularly adoptive therapy of 5AzaD-induced iTregs at early stage of pregnancy can maintain normal pregnancy.

A comparative study on the levels of serum cytokines and cortisol among post-traumatic stress disorder patients of Li and Han ethnicities in Hainan / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Post-traumatic stress disorder (PTSD) is a mental disorder with delayed or chronic onset caused by unusual, threatening, or disastrous psychological trauma, and it is an important manifestation of post-disaster mental and behavioral disorders. Studies have shown that IL-6 is a cytokine associated with PTSD occurrence. This study aimed to explore the role of cytokine and ethnicity in the pathogenesis of PTSD by examining levels of serum cytokines IL-2, IL-6, IL-8, TNF-α, and cortisol in PTSD patients of Li and Han ethnic groups.</p><p><b>METHODS</b>Levels of serum cytokines IL-2, IL-6, IL-8, TNF-α, and cortisol were examined by enzyme-linked immunoabsorbent assay (ELISA) method and assessed by PCL-C scale among 30 PTSD patients of Han ethnicity and 30 of Li ethnicity, and compared with 30 normal controls of Han and Li ethnicity, respectively.</p><p><b>RESULTS</b>PTSD patients of Li ethnicity scored higher than PTSD patients of Han ethnicity, and normal controls of Li and Han ethnic groups in each of the re-experiencing, avoidance/numbing, and hyperarousal symptoms. The differences reached statistical significance (P < 0.05). In PTSD patients of Li ethnicity compared to patients of Han ethnicity and normal controls of either Li or Han ethnicity, the levels of IL-2, IL-6, IL-8, and TNF-α were higher, and the level of cortisol was lower.</p><p><b>CONCLUSIONS</b>There are ethnic differences in re-experiencing, avoidance/numbing, and hyperarousal symptoms among PTSD patients. The levels of serum cortisol and cytokines are strongly associated with the race.</p>

Expression of survivin and CD44v6 in uterine cervical carcinoma and its association with HPV_(16/18) infection / 基础医学与临床

Objective To investigate the relationship between expression of survivin and CD44v6 and HPV16/18 infection in uterine cervical carcinogenesis.Methods Using Streptavidin-Peroxidase(S-P) immunohistochemical technique,the authors examined the expression of survivin and CD44v6 in samples.The infection of HPV type 16,18 DNA was determined by PCR.Results There were significant differences for survivin and CD44v6 between carcinomas,CIN and normal cervices(P