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    Effects of stem cells applications on oxidative stress and apoptosis during implantation
    (Wolters Kluwer Medknow Publications, 2018) Aydemir I.; Özkut M.M.; Firat F.; Gümürüdü A.; Sal D.H.; Erdogan K.; Tuglu M.I.
    Objective: To investigate the effects of bone marrow derived mesenchymal stem cell (BMSC) application into the rat endometrium on oxidative stress, cell proliferation and apoptosis. Methods: The female rats selected in estrous cycle were divided into three groups (saline, media and BMSC group). The intrauterine and intraperitoneal injections were performed using the saline (200 µL), culture media (200 µL) and 1×106 BMSCs/200 µL culture media, and then they were mated with male rats. On the 7th day of the pregnancy, uterine samples were harvested and dyed with heamatoxylin-eosin histochemically, anti-endothelial nitric oxide synthase and anti-inducible nitric oxide synthase, and anti-proliferating cell nuclear antigen immunohistochemically, with terminal deoxynucleotidyl transferas dUTP nick end labeling for apoptosis. The stainings were evaluated by H-score and the results were analyzed using one-way ANOVA test statistically. Results: It was found that BMSCs increased the endometrial thickness, endometrial epithelium thickness and number of endometrial glands compared to control and sham groups. The intrauterine BMSC application decreased both anti-endothelial nitric oxide synthase and anti-inducible nitric oxide synthase immunoreactivities and the number of apoptotic cells compared to the intraperitoneal applications whereas the immunoreactivity of proliferating cell nuclear antigen was increased. Conclusions: In current study, we define that stem cells do not cause any structural damages. Also they change the distribution of oxidative stress and cell proliferation marker. These findings support the reliability of stem cells in clinical use in the case of infertility. © 2018 by the Asian Pacific Journal of Reproduction. All rights reserved.
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    Histological investigations on thymus of male rats prenatally exposed to bisphenol A
    (Elsevier Ltd, 2018) Aydemir I.; Kum Ş.; Tuğlu M.İ.
    Bisphenol A is called as a endocrine-distrupting chemical because of the its steroid-like activity and it used in the construction of plastic containing materials. It is indicated that bisphenol A can pass the human serum, urine, follicular fluid, placenta and umblical cord as a result of the use of substances containing this agent. In this study, we aimed to investigate the effects of bisphenol A on the development of the thymus, a primary lymphoid organ which plays an important role in the specific immunity. The adult pregnant female rats were administered orally with bisphenol A (for 21 days) and postnatal thymus samples were obtained on day 21, 45 and 90 and were performed for histochemical and immunohistochemical staining for CD3, CD4, CD8 and CD79a and TUNEL assay for the apoptotic cells. Evaluation of all groups, CD3, CD4, CD8 and CD79a stainings were decreased in the experimental groups compared with control group. The apoptotic cells were determined in the all groups on day 90 as a result of the thymus involution. It is noted that there was not any histological and morphological damages in the rats prenatally exposed the bisphenol A. The effect of the bisphenol A is unknown in the future, but there is no problem in the adult rats. © 2018 Elsevier Ltd