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Öğe Association and expression analysis of porcine HNF1A gene related to meat and carcass quality traits(Elsevier Sci Ltd, 2013) Kayan, Autchara; Uddin, Muhammad Jasim; Kocamis, Hakan; Tesfaye, Dawit; Looft, Christian; Tholen, Ernst; Cinar, Mehmet UlasThe aim of this study was to investigate the association and expression of HNF1A gene as a candidate gene for meat and carcass quality traits in pigs. Statistical analysis revealed that the g.8260 A>G polymorphism significantly associated with pH 24(H), meat percentage and muscle area in the F-2 Duroc x Pietrain (DuPi, n = 313) and with pH 24(L), fat area and backfat thickness in the Pietrain (Pi, n = 110) population. HNF1A mRNA and protein expressions were higher (p < 0.05) in animals with the low post-mortem muscle pH 24(L). The promoter methylation profiling suggested that methylation was not involved on HNF1A expression regulation (p > 0.05) in animal with divergent muscle pH. In conclusion, polymorphism in porcine HNF1A gene could be used as a candidate marker to improve the meat and carcass quality traits, with the consideration of breed-specific effect. (C) 2013 Elsevier Ltd. All rights reserved.Öğe Determination of antioxidants in bovine oviduct epithelial cell culture isolated at different periods of the estrous cycle(Scientific Technical Research Council Turkey-Tubitak, 2019) Kurum, Aytul; Karahan, Siyami; Kocamis, Hakan; Cinar, Miyase; Ergun, EmelOxidative stress interferes with oviduct functions including oocyte maturation, capacitation, fertilization, and embryo and gamete transport. This study aimed to determine activity of the antioxidants glutathione peroxidase (GPX-I), superoxide dismutase (SOD), and catalase (CAT) in bovine oviduct epithelial cells (BOEC) isolated from the isthmus and ampulla of the oviduct at estral (n = 7) and luteal phases (n = 7) of the estrous cycle. The antioxidant activity was measured at the primary, first, and second passages of the cell culture, and was characterized by cytokeratin expression. The GPX activity increased over the passages in samples of the ampulla and the isthmus of each sexual phase without statistical significance. The SOD activity remained steady through the cell passages in both sexual phases. CAT activity at the primary culture was higher in the ampulla compared to the isthmus in both sexual phases with a significant difference for the estral phase (P < 0.05), and it decreased over the passages with no significant differences. In conclusion, the antioxidant enzyme activity profile of BOEC did not differ by region or sexual cycle except for that of CAT, which was higher in the ampulla. Further studies should focus on SOD, GPX, and CAT activity for the mechanism of BOEC adaptation to an in vitro environment.Öğe Determining Gene Expression Profile of GPX 1 in the Liver of Diabetic Rats Treated with Capsaicin by Real-Time PCR(Kafkas Univ, Veteriner Fakultesi Dergisi, 2015) Kurum, Aytul; Kocamis, Hakan; Deprem, Turgay; Cinar, Mehmet UlasThe purpose of the present study was to determine the Glutathione Peroxidase 1 (GPX 1) gene expression by Real Time PCR in the liver of healthy and diabetic rats treated with capsaicin. Twenty Sprague-Dawley rats were used in our study. Rats were divided into four groups: Group I: diabetic rats (n=5), Group II: capsaicin injected rats (n=5), Group III: Capsaicin injected diabetic rats (n=5), and Group IV: control rats (n=5). Capsaicin injection began 72 h after streptozotocin (STZ) injection. Capsaicin (1 mg/kg) was prepared in 10% ethanol, 1% Tween 20, and 80% sterile water and subcutaneously injected daily in both Groups II and III for two weeks. The results of RT-PCR conducted to determine GPX 1 gene expression indicated that capsaicin treated diabetic rats had higher GPX 1 expression compared to all groups including control (P<0.05). As a result, capsaicin causes an increase in GPX 1 gene expression at transcription level in the diabetic rat liver. Further investigation is needed to determine if such an increase occurs at protein level using various methods such as western-blot analysis.Öğe OVGP1 Expression in BOEC and Oviduct: An Immunohistochemical and Immunocytochemical Study(Kafkas Univ, Veteriner Fakultesi Dergisi, 2021) Kurum, Aytul; Kocamis, Hakan; Karahan, Siyami; Turk, Mustafa; Ozkabadayi, YasinOviduct is an important tubular organ fostering critical physiological processes such as transport of gametes and embryos, capacitation, fertilization, early embryo development, and maturation of gametes. The aim of the present study was to evaluate oviduct specific glycoprotein-1 (OVGP1) expression in the oviduct regions at different phases of the sexual cycle and bovine oviduct epithelial cells ( BOEC). In the study, oviduct samples collected from 6 cows in estral and luteal phases were used. The oviduct samples were collected from the ampulla, isthmus and fimbria and evaluated through routine histology and immunohistochemical studies for OVGP1. The primary BOEC were obtained from the ampulla region and characterized by cytokeratin expression. The immunohistochemistry assay indicated that OVGP1 is expressed in secretory cells of the bovine oviduct. OVGP1 expression varies by the oviduct regions and phases of the sexual cycle. Changes in OVGP1 expression during the sexual cycle suggestively indicates a hormonal influence. Regional difference in OVGP1 expression is most likely related to the physiological events that occur in different regions of the oviduct. BOEC isolated from the oviduct of estral and luteal phases also expresses OVGP1. Further studies should focus on possible role of OVGP1 in adaption of BOEC to very tedious condition like cell culture.
