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    The Effect of Brotizolam Induced Appetite on Serum Ghrelin Levels in Mice
    (2021) Öztürk, Aliye Sağkan; Öztürk, Atakan
    Objective: Appetite is affected by the metabolic profile, infections and nutritional shape in domestic animals. Regulation of appetite involves many complex physiological processes. Ghrelin is well known appetite-enhancing hormone. The appetite is also managed by the lateral hypothalamus. On the other hand, the ventromedial nucleus is most commonly associated with satiety. Brotizolam, member of the 1,4-benzodiazepines derivative, is blocking the activity of the ventromedial hypothalamus and used to increase appetite in domestic animals. The aim of this study was to investigate the impact of brotizolam on serum ghrelin levels, enhancer appetite hormone.Methods: A total of 16 mice were equally assigned to two groups as control (0.9% NaCl, IP) and brotizolam (2 ?g/kg, IP). Blood samples was collected 30 min after the administration in both groups. Serum ghrelin levels were determined by enzyme linked immunoassay.Results: There was a significance differences between control and brotizolam groups (P<0.001). The results of the study showed that the administration of brotizolam increased serum ghrelin levels.Conclusion: Brotizolam, which suppresses ventromedial hypothalamus and satiety, can activate appetite by activation of the lateral hypothalamus and increase in ghrelin levels.In addition, ghrelin may be used as an endocrine marker of appetite.
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    Short term effects of experimental gastric outlet obstruction and truncal vagotomy on gut hormones
    (Taylor & Francis, 2022) Öztürk, Aliye Sağkan; Aydın, Mehmet; Bozkurt, Yeşim Akaydın; Küçükgül, Altuğ; Öztürk, 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