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    Investigation of the potential teratogenic effects of fructose on the embryo using the rat whole embryo culture model
    (Elsevier Ltd, 2024) Gür, Hatice Emel; Balcıoğlu, Esra; Patat, Dilara; Uçar, Sümeyye; Gür, Fatih Mehmet; Yalçın, Betül; Nisari, Mehtap
    Excessive consumption of fructose-sweetened foods and beverages is a growing concern worldwide. Studies have demonstrated that fructose consumption before and during pregnancy can result in adverse outcomes such as decreased decidualization, increased fetal losses, and low birth weight. The study investigated the teratogenic effects of fructose on rat embryos during organogenesis using whole embryo culture. Within the scope of the study, 4 groups were formed as control, low, medium, and high-dose fructose (HDF) with 10 embryos in each group. The 9.5-day-old rat embryos were cultured with different concentrations of fructose (1, 5 and 10 mM) for 48 h and the possible effects of fructose were examined using morphological scoring, histochemistry, immunofluorescence, and TUNEL methods. According to the analyses, protein synthesis and proliferation were decreased, vascular formation was suppressed, and apoptosis was increased in embryos exposed to fructose, especially at concentrations of 5 mM and above. According to the morphological scoring results, it was determined that heart, hind limb, and somite development were retarded in all experimental groups compared to the control group, developmental retardation increased in direct proportion to fructose concentration, and also significant malformations were observed in all parameters examined in the HDF group. In addition, analysis of yolk sac diameter, head length, crown rump length and somite numbers showed that these parameters were significantly decreased in all experimental groups. End of the study, it was concluded that fructose at concentrations of 1 mM and above may induce embryonic development retardation and other anomalies by decreasing protein synthesis and cell proliferation, suppressing vascular formation, and increasing apoptosis in embryonic tissues. © 2024 Elsevier Ltd
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    The Effect of Triclosan on In vitro Embryonic Development in Rat
    (Kafkas Univ, Veteriner Fakultesi Dergisi, 2020) Cayan, Dicle; Unur, Erdogan; Nisari, Mehtap; Patat, Dilara; Dagli, Ertugrul; Akalin, Hilal
    Triclosan (TCS) is a broad spectrum antimicrobial agent showing its effect by deactivating the fatty acid synthesis of bacteria. The aim of this study was to investigate the effects of TCS on in vitro embryonic development in rats and to determine the levels of caspases 2, 7, 8, and 9 inducing cells to apoptosis through gene expression. According to the TCS dose added to the culture whole rat serum, 3 experimental groups and a control group were formed with each including 10 embryos. After 48 h culturing period, embryos were subjected to morphological scoring for developmental evaluation. The levels of caspases 2, 7, 8, and 9 were measured by performing gene expression on 40 embryos. Significant decreases were obtained in all parameters of morphological scoring in the experimental groups as the dose of TCS increased. While the caspase-2 level showed a significant decrease among the groups and was inversely proportional to the level of TCS, the caspase-9 level showed a significant increase among the groups and was directly proportional to the level of TCS. In conclusion, TCS was determined to cause apoptosis in the cells via the intrinsic pathway during pregnancy period and lead to embryonic growth retardation, which increased with increased dose of TCS.
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    The Role of Folic Acid in Rat Embryo Development in a Hypoxic Environment: An Experimental Study
    (Erciyes Univ Sch Medicine, 2024) Dagli, Ertugrul; Nisari, Mehtap; Patat, Dilara; Cayan, Dicle; Atay, Em re; Ertekin, Tolga; Ucar, Sumeyye
    Objective: Folic acid (FA) is a key antioxidant with substantial metabolic roles, and research has demonstrated its effectiveness in reducing congenital anatomical development disorders. This study explores the impact of folic acid on embryo development under hypoxia-induced conditions in embryo cultures. Materials and Methods: Female Wistar albino rats, aged 4-10 months and weighing 150- 250 grams, were utilized for this research. Embryos were extracted from the maternal womb on the 9.5 (th )day of pregnancy. We established six groups, each consisting of 10 embryos: Control (C), Hypoxia (H), 1 mmol FA (1FA), 2 mmol FA (2FA), Hypoxia + 1 mmol FA (H1FA), and Hypoxia + 2 mmol FA (H2FA). Following a 48 -hour culture period, the groups were assessed morphologically. Results: When comparing the morphological parameters of the Control and Hypoxia groups, it was statistically demonstrated that the Control group completed its development, whereas the Hypoxia group exhibited insufficient development (p<0.05). There were statistically significant differences between the Hypoxia group and the Hypoxia + 1 mmol FA and Hypoxia + 2 mmol FA groups (p<0.05). Both the Hypoxia + 1 mmol FA and Hypoxia + 2 mmol FA groups demonstrated better embryonic development compared to the Hypoxia group (p<0.05). Conclusion: The study has established that FA has positive effects on embryos exposed to hypoxic conditions, which result in developmental delays.