Person: ÖZYİĞİT, MUSA ÖZGÜR
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ÖZYİĞİT
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MUSA ÖZGÜR
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Publication Her-2 positivity rate in dogs with mammary carcinoma: A systematic review and meta-analysis(Hellenic Veterinary Medical Soc, 2020-04-01) Uzabacı, Ender; UZABACI, ENDER; Özyiğit, Musa Özgür; ÖZYİĞİT, MUSA ÖZGÜR; Ercan, İlker; Arda, O.; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/ Patoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/ Biyoistatistik Anabilim Dalı.; 0000-0002-9634-0055; 0000-0002-2382-290X; JPL-5273-2023; ABF-2367-2020; AAR-6478-2021Human epidermal growth factor receptor 2 (HER-2) plays an essential role in cell growth and survival. HER-2 overexpression occurs in 20-30% of human breast tumors and has prognostic value as it is associated with disease progression. HER-2 overexpression is also associated with tumor progression and metastasis in malignant mammary tumors of the canine. However, in the literature, different positivity classifications/scoring were used in the evaluation of HER-2 status, and there is no consensus in terms of scoring of HER-2 expression in canine mammary tumors. In this study, it was aimed to estimate the HER-2 positivity rate by evaluating the results of the study using different positivity classifications by meta-analysis. In this context, by using "HER-2 canine mammary tumor" keywords, Pubmed and Web of Science electronic databases were scanned until February 2019, and a total of 97 related studies were found. However, 20 of these studies were used for the analysis. Two different meta-analyses were performed to evaluate the HER-2 positivity status with "2+ and 3+" and "3+" scores. As a result, HER-2 positivity rates were determined at 25.87% and 25.99% for the studies using "2+/3+" scores and "3+" respectively for HER-2 positivity. Therefore, this result suggests that the rate of HER-2 positivity is similar between humans and dogs.Publication Efficacy and toxicity of doxorubicin and cyclophosphamide for the neoadjuvant treatment of locally advanced stage canine mammary tumors(Kafkas Univ, Veteriner Fakultesi Dergisi, 2020-11-01) Shahzad, Abid Hussain; Kuruoglu, Fikriye Ecem; Özyiğit, Musa Özgür; ÖZYİĞİT, MUSA ÖZGÜR; Nak, Deniz; NAK, DENİZ; Küpeli, Zehra Avcı; Ekici, Zeynep Merve; Koca, Davut; KOCA, DAVUT; Avcılar, Talha; Nak, Yavuz; NAK, YAVUZ; Sahin, Mustafa Eren; ; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Doğum ve Jinekoloji Anabilim Dalı.; 0000-0002-6715-8529; 0000-0003-1853-4679; 0000-0002-7962-6959; 0000-0001-7034-9644; 0000-0002-8623-8292; AAH-5494-2021; AAH-2873-2021; AAI-6709-2021; AAR-6478-2021The aim of this study was to investigate the effect and toxicity of a doxorubicin cyclophosphamide combination for neoadjuvant use in dogs with locally advanced mammary tumors. A total of 16 dogs with locally advanced mammary tumors aged 8-14 years was used in this study. Samples were taken from all the dogs via Tru-Cut biopsy and fine needle aspiration biopsy of the lymph nodes prior to neoadjuvant chemotherapy. The samples were sent to the pathology laboratory for histopathological examination. Based on the histopathology results, mammary tumors were diagnosed as adenocarcinoma (n=13), tubulopapillary carcinoma (n=2) and malignant mixed tumors (n=1). For the neoadjuvant chemotherapy, doxorubicin (25-30 mg/m(2)) and cyclophosphamide (100 mg/m(2)) were administered via slow IV injection 4 times at 3-week intervals. Clinical findings such as fever, vomiting, anorexia, lethargy, weight loss, alopecia, enteritis, hematuria, and skin ulceration and laboratory findings such as a decrease in neutropenia and hematocrit values were observed. Based on the longest diameter of the tumors before and after four weeks of chemotherapy, a complete response was detected in 2 dogs (12.5%), a partial response was observed in 9 dogs (56.25%) and the disease was stable in 5 dogs (31.25%). According to results, the toxicity, and efficacy of a doxorubicin and cyclophosphamide combination for neoadjuvant chemotherapy in dogs with locally advanced mammary tumors is acceptable, and the treatment is promising.Publication The effects of hypoxia on the expression of vascular endothelial growth factor in broiler lung fibroblasts(Tübitak Bilimsel ve Teknolojik Araştırma Kurumu, 2015-01-01) Özyiğit, Musa Özgür; Kahraman, Müjdat Müfit; Akkoç, Ahmet; ÖZYİĞİT, MUSA ÖZGÜR; KAHRAMAN, MÜJDAT MÜFİT; AKKOÇ, AHMET; Uludağ Üniversitesi/Veteriner Fakültesi/Patoloji Bölümü; 0000-0002-5090-7917; AAR-6478-2021; AAH-2873-2021; CYB-9080-2022; DTZ-3578-2022The aim of this study was to investigate the effects of hypoxic stresses on vascular endothelial growth factor (VEGF) in cultured lung fibroblasts of meat-type chickens. Isolated and subcultured primary lung fibroblasts were exposed to hypoxia. The presence of VEGF and the effects of hypoxia on cultured lung fibroblasts and in the culture media were evaluated. Immunocytochemistry using streptavidin-biotin-peroxidase method and ELISA using commercially available primary monoclonal antibodies were used for evaluation in both 6-h and 12-h hypoxic fibroblasts. The level of VEGF was slightly higher in the 6-h hypoxic group (1.22 ng/mL) than in the 6-h control group (1.27 ng/mL) in cell culture media by ELISA. In the 6-h hypoxic group, a correlation between the decrease in immunocytochemical score and increase in medium with VEGF was observed. The presence of VEGF was shown in cultured chicken lung fibroblasts from meat-type chickens. In conclusion, a significant decrease in immunocytochemical staining score was observed along with a slight increase in the amount of VEGF in culture media under hypoxic conditions. The results suggest that VEGF might have a role in edema formation via permeability increase in the lungs of ascitic meat-type chickens.Publication Immune response of cattle to botulinum type C and D toxoid administered on three occasions(Univ Agriculture, Fac Veterinary Science, 2015-01-01) Mecitoğlu, Zafer; Temizel, Ethem Mutlu; Özyigit, Özgür; Akgül, Gülşah; Kennerman, Engin; MECİTOĞLU, ZAFER; TEMİZEL, ETHEM MUTLU; ÖZYİĞİT, MUSA ÖZGÜR; Akgül, Gülşah; KENNERMAN, ENGİN; Uludağ Üniversitesi/Veteriner Fakültesi/Patoloji Anabilim Dalı; Uludağ Üniversitesi/Veteriner Fakültesi/Dahiliye Anabilim Dalı; AAH-1677-2021; ECV-4083-2022; GLP-3036-2022; CBU-1718-2022; FDU-5862-2022The aims of the present study were to investigate the antibody response of cows from an outbreak region to vaccination with a bivalent botulinum toxoid (Type C and D) on three occasions and to investigate the antibody response to vaccination with the botulinum toxoid in the presence of anti-BoNT antibodies. Twenty-two cows from an outbreak region and 10 cows from a farm without a history of botulism were used in this study. Blood samples were collected before each vaccination and three weeks after the third vaccination (days 0, 21, 42 and 63). The level of anti-BoNT/C antibodies steadily increased after each vaccination (0.471 +/- 0.04, 0.566 +/- 0.03 and 0.663 +/- 0.04, respectively); however, the levels of anti-BoNT/ D antibodies were not significantly different after the second and third vaccinations (0.377 +/- 0.03, 0.493 +/- 0.03 and 0.465 +/- 0.03, respectively). Post vaccination antibody responses of animals found positive and negative for anti-BoNT antibodies at the beginning of the study were similar. The results of the present study indicated that vaccination of cattle with botulinum toxoid on three occasions is recommended, particularly in outbreaks that are suspected to be caused by BoNT/C and that presence of naturally acquired antibodies against BoNT did not interfere with post vaccination immune response.Publication Pharmacologic overview of systemic chlorogenic acid therapy on experimental wound healing(Springer, 2014-11-01) Bağdaş, Deniz; Gül, Nihal Yaşar; Topal, Ayşe; Taş, Sibel; Özyiğit, Musa Özgür; CinkIlıç, NilÜfer; Gül, Zülfiye; Etoz, Betül Cam; Ziyanok, Sedef; İnan, Sevda; Turacozen, Özge; Gürün, Mine Sibel; Bağdaş, Deniz; GÜL SATAR, NİHAL YAŞAR; TOPAL, AYŞE; TAŞ, SİBEL; ÖZYİĞİT, MUSA ÖZGÜR; CinkIlıç, Nilüfer; Gül, Zülfiye; Etoz, Betül Cam; ZİYANOK DEMİRTAŞ, SEDEF; İnan, Sevda; Turacözen, Özge; GÜRÜN, MİNE SİBEL; Uludağ Üniversitesi/Tıp Fakültesi/Deney Hayvanları Yetiştirme ve Araştırma Merkezi; Uludağ Üniversitesi Veteriner Fakültesi, Cerrahi Anabilim Dalı; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Biyoloji Bölümü; Uludağ Üniversitesi/Tıp Fakültesi/Farmakoloji Anabilim Dalı; 0000-0001-6225-774X; 0000-0002-3595-6286; 0000-0002-8872-0074; 0000-0003-3878-3808; 0000-0001-8138-5851; AAG-8716-2019; AAH-4272-2021; AAF-9939-2020; ABE-6873-2020; JBJ-7162-2023; AAH-5296-2021; AAR-6478-2021; AAH-2873-2021; E-3364-2018; EOB-5882-2022; GGO-6894-2022; AAH-5296-2021Chlorogenic acid (CGA) is a well-known natural antioxidant in human diet. To understand the effects of CGA on wound healing by enhancing antioxidant defense in the body, the present study sought to investigate the potential role of systemic CGA therapy on wound healing and oxidative stress markers of the skin. We also aimed to understand whether chronic CGA treatment has side effects on pivotal organs or rat bone marrow during therapy. Full-thickness experimental wounds were created on the backs of rats. CGA (25, 50, 100, 200 mg/kg) or vehicle was administered intraperitoneally for 15 days. All rats were sacrificed on the 16th day. Biochemical, histopathological, and immunohistochemical examinations were performed. Possible side effects were also investigated. The results suggested that CGA accelerated wound healing in a dose-dependent manner. CGA enhanced hydroxyproline content, decreased malondialdehyde and nitric oxide levels. and elevated reduced glutathione, superoxide dismutase, and catalase levels in wound tissues. Epithelialization, angiogenesis, fibroblast proliferation, and collagen formation increased by CGA while polymorph nuclear leukocytes infiltration decreased. CGA modulated matrix metalloproteinase-9 and tissue inhibitor-2 expression in biopsies. Otherwise, high dose of CGA increased lipid peroxidation of liver and kidney without affecting the heart and muscle samples. Chronic CGA increased micronuclei formation and induced cytotoxicity in the bone marrow. In conclusion, systemic CGA has beneficial effects in improving wound repair. Antioxidant, free radical scavenger, angiogenesis, and anti-inflammatory effects of CGA may ameliorate wound healing. High dose of CGA may induce side effects. In light of these observations, CGA supplementation or dietary CGA may have benefit on wound healing.Publication CDP-choline protects against sepsis-induced acute tissue injury in rats(Federation Amer, 2013-04-01) Yılmaz, Mustafa Sertaç; Sevim, Çiğdem; Altınbaş, Burçin; Özyiğit, Musa Özgür; Savcı, Vahide; Yalçın, Murat; YILMAZ, MUSTAFA SERTAÇ; Sevim, Çiğdem; Altınbaş, Burçin; ÖZYİĞİT, MUSA ÖZGÜR; SAVCI, VAHİDE; YALÇIN, MURAT; Uludağ Üniversitesi/Veteriner Fakültesi/Fizyoloji Bölümü; Uludağ Üniversitesi/Veteriner Fakültesi/Patholoji Bölümü; 0000-0001-9496-1475; 0000-0002-5600-8162; 0000-0002-9534-736X; 0000-0002-0575-3090; AAG-6956-2021; IYS-2646-2023; AAH-2873-2021; AAH-1571-2021; AAR-6478-2021; KHD-9454-2024; JED-7015-2023Publication Evaluation of some systemic inflammatory biomarkers in canine malignant mammary tumors [i](Kafkas Univ, Veteriner Fakultesi Dergisi, 2023-09-01) Koca, Davut; Ekici, Zeynep Merve; Özyiğit, Musa Özgür; ÖZYİĞİT, MUSA ÖZGÜR; Nak, Deniz; NAK, DENİZ; Avcı Küpeli, Zehra; Kuruoğlu, Fikriye Ecem; Avcılar, Talha; Gümüş, Oğulcan; Nak, Yavuz; NAK, YAVUZ; Bursa Uludağ Üniversitesi/Tıp Fakültesi; 0000-0002-6715-8529; 0000-0002-7962-6959; 0000-0001-7034-9644The aim of this study is to investigate whether neutrophil-to-lymphocyte ratio (NLR), lymphocyte-to-monocyte ratio (LMR), platelet-to-lymphocyte ratio (PLR), systemic immune-inflammation index (SII), albumin-to-globulin ratio (AGR), and prognostic nutritional index (PNI) parameters could be used as biomarkers for canine malignant mammary tumors (MMTs), and the changes in these parameters according to different tumor (T), lymph node (N), and metastasis (M) stages (TNM I-II-III, TNM IV, TNM V) and the number of affected mammary glands (single, multiple). Thirty-seven with MMT and 20 healthy dogs were used in this study. Complete blood count and biochemistry analysis were performed in all dogs. Tumor material is removed by tru-cut and sent to the pathology laboratory for diagnosis. NLR, PLR, and SII values increased, and LMR and PNI values decreased in dogs with MMT. Median NLR values increased and median LMR and PNI values decreased as the TNM stage progressed. In dogs with a single MMT, median NLR, and PLR values were found to be lower than in dogs with multiple MMTs, and median LMR, SII, AGR, and PNI values were higher. The present results indicated that NLR, LMR, PLR, SII, and PNI parameters could be used as biomarkers for canine MMT. Also, NLR, LMR, PLR, SII, PNI, and AGR parameters may be valuable biomarkers that reveal the degree of systemic immune response according to different TNM stages and the number of affected mammary glands.