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    Evaluation of oxidative stress, antioxidant status and lipid profile in cattle with displacement of the abomasum
    (Ankara Univ Press, 2016) Durgut, Ramazan; Sagkan Ozturk, Aliye; Ozturk, Oktay Hasan; Guzel, Murat
    The aims of the present study were to evaluate serum oxidative and antioxidant status and oxidative stress index, and lipid metabolism profile in cattle with abomasal displacement. A total of thirty-two dairy cows with right-and left-sided abomasal displacement (LDA (n=11) and RDA without volvulus (n=11)) and 10 healthy controls were used in this study. Serum total oxidative status (TOS) and total antioxidant capacity (TAC) were measured by a colorimetric method. The TOS-to-TAC ratio was also calculated as oxidative stress index (OSI) value. Serum lipid profiles were determined by conventional measurement methods as well. Mean TOS and OSI values were significantly (p<0.001) higher in cows with RDA compared to LDA and healthy controls; however, there was no significant differences in serum TAC values among groups. Serum total cholesterol (TC), high density lipoproteins (HDL) and low density lipoproteins (LDL) levels were significantly (p=0.001) decreased, while serum triglyceride (TG) levels were significantly increased in dairy cows with right-and left-sided abomasal displacement compared to healthy controls. The results of current study showed that dairy cows with RDA forming free radicals than LDA and controls due to abomasal tension and increased intraluminal pressure.
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    Evaluation of oxidative stress, antioxidant status and lipid profile in cattle with displacement of the abomasums
    (Chartered Inst. of Building Services Engineers, 2016) Durgut, Ramazan; Sagkan Ozturk, Aliye; Ozturk, Oktay Hasan; Guzel, Murat
    The aims of the present study were to evaluate serum oxidative and antioxidant status and oxidative stress index, and lipid metabolism profile in cattle with abomasal displacement. A total of thirty-two dairy cows with right- and left-sided abomasal displacement (LDA (n=11) and RDA without volvulus (n=11)) and 10 healthy controls were used in this study. Serum total oxidative status (TOS) and total antioxidant capacity (TAC) were measured by a colorimetric method. The TOS-to-TAC ratio was also calculated as oxidative stress index (OSI) value. Serum lipid profiles were determined by conventional measurement methods as well. Mean TOS and OSI values were significantly (p<0.001) higher in cows with RDA compared to LDA and healthy controls; however, there was no significant differences in serum TAC values among groups. Serum total cholesterol (TC), high density lipoproteins (HDL) and low density lipoproteins (LDL) levels were significantly (p=0.001) decreased, while serum triglyceride (TG) levels were significantly increased in dairy cows with right- and left-sided abomasal displacement compared to healthy controls. The results of current study showed that dairy cows with RDA forming free radicals than LDA and controls due to abomasal tension and increased intraluminal pressure. © 2016, Chartered Inst. of Building Services Engineers. All rights reserved.
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    Investigation of Acute Phase Reactants and Antioxidant Capacity in Calves Infected with Cryptosporidium parvum
    (Kafkas Univ, Veteriner Fakultesi Dergisi, 2017) Cenesiz, Metin; Sagkan Ozturk, Aliye; Dalgin, Duygu; Yarim, Gul Fatma; Ciftci, Gulay; Ozdemir, Ramazan; Guzel, Murat
    Cryptosporidiosis is a zoonotic infection contaminating via fecal-oral route. Cryptosporidium parvum has a wide host prevalance, but is more epidemic in calves. This disease courses with high morbidity and mortality resulting considerable economic losses. In this study, halofuginon (100 mu g /kg/day for 7 days) was applied to calves infected with C. parvum and the effect of this treatment on acute phase proteins and antioxidant capacity were investigated. Study group was comprised of sera of 10 Holstein calves aged 1-3 weeks, infected with C. parvum. Blood samples were obtained from the animals before and after treatment of 7 days and serum amyloid A (SAA), haptoglobin (Hp), C-reactive protein (CRP), ceruloplasmin (CP), malondialdehyde (MDA) levels and superoxide dismutase (SOD) and adenosine deaminase (ADA) activities were measured in sera. Obtained data showed that there was no statistical difference between pre and post treatment SAA, CRP and MDA levels, but a decrease was determined in post treatment Hp (P<0.001) and CP (P<0.05) levels, with ADA (P<0.05) and SOD (P<0.001) activities. Eventually, it was determined that ADA and SOD activities and Hp and CP levels decreases by treatment in calves infected with C. parvum.
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    Short term effects of experimental gastric outlet obstruction and truncal vagotomy on gut hormones
    (Taylor & Francis Ltd, 2022) Sagkan Ozturk, Aliye; Aydin, Mehmetq; Bozkurt, Yesim Akaydin; Kucukgul, Altug; Ozturk, Atakan
    Gastric outlet obstruction (GOO) is caused mainly by pyloric or duodenal blockage; gastric surgery and vagotomy are effective treatments. We investigated the short term effects of experimental GOO and truncal vagotomy (TV) on gut hormone levels. We used 8-week-old male Wistar rats divided randomly into four groups: control, GOO, TV, and GOO + TV. At the end of the experiment, blood and tissue samples of the pylorus and fundus were obtained for biochemical and immunohistochemical analysis. Gastric motility decreased in the TV group, but there was no difference in food intake compared to the control group; water consumption and urine output were increased. Feces excretion and food intake decreased due to loss of food movement from the stomach of GOO and GOO + TV rats. Levels of insulin and ghrelin were lower than for the control group, but levels of cholecystokinin were higher. Leptin and glucagon-like peptide 1 levels were increased in the GOO group, while somatostatin was decreased. Leptin immunostaining levels were decreased in the GOO + TV group. Gastrin and neuropeptide Y levels were lower in the GOO and GOO + TV groups compared to the other groups. We found that both gut hormone levels related to gastric motility and metabolism, and immunohistochemical staining of the stomach tissue were altered by TV and GOO. Measuring changes in gut hormones following gastric surgery could be useful for monitoring the effectiveness of treatment.