Yazar "Akbalik, M. E." seçeneğine göre listele

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    Anatomical and histological structure of the tongue and histochemical characteristics of the lingual salivary glands in the Chukar partridge (Alectoris chukar, Gray 1830)
    (Taylor & Francis Ltd, 2012) Erdogan, S.; Sagsoz, H.; Akbalik, M. E.
    1. The aim of the study was to examine the morphology of the tongue and the histochemical features of the lingual salivary glands in this species. 2. The tongue was elongated, terminating in a rather sharp, dagger-like apex. On the surface of the tongue and situated between the body and root of the tongue, two rows of conical papillae, the sharp apices of which pointed towards the posterior part of the tongue, were observed. The keratinised epithelium lining the dorsal surface lacked typical gustatory papillae. However, it was observed that taste buds were present in the epithelium of the lingual body and root. The tongue was supported by a structure composed of hyaline cartilage, the paraglossum, which extended from the lingual root to the apex. Simple branched tubular glands, which were encapsulated by connective tissue, were embedded within the submucosa in the body (anterior salivary glands) and root (posterior salivary glands) of the tongue. It was observed that the secretion of the lingual glands contained neutral mucins, proteoglycans containing carboxylic acid, weak and strong sulphated groups, N-acetylated sialomucins, but lacked glycogen. 3. It was demonstrated that, the general morphological features, papillary distribution of the tongue and the histological structure of the mucosa epithelium and the supportive elements displayed similarity to those of other domestic avian species. It was also determined that, in view of the particular feeding types, in the partridge, the presence of the papillary crest was not correlated with diet.
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    The course and ramification of prostatic artery in genital tract of the domestic tomcat (Felis catus)
    (Wiley-Blackwell, 2015) Erdogan, S.; Akbalik, M. E.; Sagsoz, H.
    [Abstract Not Available]
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    Distribution and density of mast cells in the bovine reproductive tract during the follicular and luteal phases
    (Wiley-Blackwell, 2015) Sagsoz, H.; Saruhan, B. Guney; Akbalik, M. E.; Erdogan, S.
    [Abstract Not Available]
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    Distribution of estrogen receptor ? and progesterone receptor B in the bovine oviduct during the follicular and luteal phases of the sexual cycle: an immunohistochemical and semi-quantitative study
    (Taylor & Francis Inc, 2011) Saruhan, B. G.; Sagsoz, H.; Akbalik, M. E.; Ketani, M. A.
    The aim of our study was to determine the distribution of estrogen receptor alpha (ER alpha) and progesterone receptor B (PR-B) in the bovine oviduct during the follicular and luteal phases. Bovine oviducts from 23 animals were obtained from a local slaughterhouse. Blood samples from these animals also were taken before death to measure estrogen and progesterone levels. The serum levels of estradiol-17 beta and progesterone changed during the estrous cycle. Tissue distribution of ER alpha and PR-B was examined using immunohistochemical techniques and the results showed that ER alpha and PR-B were stained in nuclei of cells and could be detected in all compartments along the entire oviduct during both the follicular and luteal phases. During the follicular phase, no significant differences were found between ER alpha and PR-B distribution (p < 0.05), while significant differences were found between ER alpha and PR-B during the luteal phase (p < 0.05). We results indicated that the frequency and intensity of ER alpha and PR-beta immunoreactivity in the oviduct of bovines varied according to the oviductal cell types and the phases of the sexual cycle.
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    Distribution of macrophages, eosinophils, and plasma cells in the cow reproductive tract during the sexual cycle
    (Wiley-Blackwell, 2015) Akbalik, M. E.; Sagsoz, H.; Saruhan, B. Guney; Erdogan, S.
    [Abstract Not Available]
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    Expression of epidermal growth factor receptors and epidermal growth factor, amphiregulin and neuregulin in bovine uteroplacental tissues during gestation
    (W B Saunders Co Ltd, 2013) Akbalik, M. E.; Ketani, M. A.
    Introduction: Growth factors are proteins that bind to specific cell surface receptors that initiate signalling pathways and result in proliferation or differentiation of the affected cells. During gestation, epidermal growth factor receptors (ErbB1-4) and its ligands (epidermal growth factor-EGF, amphiregulin-AREG, neuregulin1-NRG1) play a significant role in differentiation, function and growth of the uterus. Objectives: To determine the role of ErbB receptors and EGF, AREG and NRG1 in bovine uteroplacental tissues during gestation. Methods: Placentomes and interplacentomal areas from 30 cows from early gestation until near term were analysed by immunohistochemistry. Results: ErbB receptors and its ligands were observed in uteroplacental tissues and its expression was maintained throughout pregnancy, but ErbB1 receptor did not exist in the caruncular and cotyledonary stromal cells. Besides, caruncular stromal cells did not present with any immune reaction for EGF, AREG and NRG1. Generally, it was observed that total scores for ErbB receptors and its ligands (EGF, AREG and NRG1) had decreased from early to late gestation (p < 0.05). Conclusion: Our study shows the presence of ErbB receptors and its ligands participate in the mid- and late-phases of pregnancy. To our knowledge, this is the first study on the expression of NRG1 during bovine pregnancy. These results indicates that these factors may play a crucial role not only to enable cellular proliferation and differentiation in the uterus throughout gestation, but also to have a potential role in the cellular communication maintained between the embryo/fetus and uterus by the placenta. (C) 2013 Elsevier Ltd. All rights reserved.
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    Localization of estrogen receptor ? and progesterone receptor B in bovine cervix and vagina during the follicular and luteal phases of the sexual cycle
    (Taylor & Francis Ltd, 2011) Sagsoz, H.; Akbalik, M. E.; Saruhan, B. G.; Ketani, M. A.
    The localization and distribution of estrogen receptors (ER a) and progesterone receptors (PR-B) in the cervix and vagina of sexually mature bovines during the follicular and luteal phases of the sexual cycle were studied using immunohistocehmistry. The estrous cycle stage of 23 Holstein bovines was assessed by gross and histological appearance of ovaries and blood steroid hormone values. Tissue samples from cervix and vagina were fixed in 10% formaldehyde for routine histological processing. Nuclear staining for ER a and PR-B was observed in the epithelial cells of the surface epithelium, stromal cells and smooth muscle cells. Generally, in the cervix, ER a immunoreactivity was more intense in the epithelial and smooth muscle cells during the follicular phase and in the epithelial cells during the luteal phase (p < 0.05). PR-B immunoreactivity was more intense in the epithelial and smooth muscle cells than in the superficial and deep stromal cells during the follicular and luteal phases (p < 0.05). In the vagina, ER a and PR-B immunoreactivities were more intense in the epithelial cells than in the connective tissue cells and smooth muscle cells during the follicular and luteal phases (p < 0.05). These results indicated that the frequency and intensity of ER a and PR-B immunoreactivity in the cervix and vagina of bovines varied according to the cervical and vaginal cell types and the phases of the sexual cycle.