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Iranian Journal of Basic Medical Sciences، جلد ۲۶، شماره ۱، صفحات ۶۹-۷۵
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عنوان انگلیسی Protective effect of melatonin on learning and memory impairment and hippocampal dysfunction in rats induced by high-fructose corn syrup
چکیده انگلیسی مقاله Objective(s): We investigated the harmful effects of high fructose corn syrup (HFCS) on learning and memory in the hippocampus and the ameliorative effects of melatonin (Mel). Materials and Methods: Thirty-six adult male Sprague Dawley rats were divided into three groups: Group I, control; Group II, HFCS; and Group III, HFCS+Mel. HFCS form F55 was prepared as a 20% fructose syrup solution. Rats in HFCS and HFCS+Mel groups were given drinking water for 10 weeks. Rats in the HFCS+Mel group have been given 10 mg/kg/day melatonin orally for the 6 weeks, in addition to HFCS 55. The Morris water maze (MWM) test was applied to all animals for 5 days to determine their learning and memory levels. After decapitation, one-half of the hippocampus samples were collected for western blot analysis, and another half of the tissues were collected for histopathological and immunohistochemical analyses. Results: In the HFCS group, there was a significant difference between the time to find the platform in the MWM test and time spent in the quadrant between days 1 and 5 (P=0.037 and P=0.001, respectively). In addition, a decreased level of MT1A receptor, TNF-α, iNOS, osteopontin (OPN), and interleukin-6 (IL-6) expressions were significantly increased in the HFCS group. Melatonin treatment reversed MT1A receptor levels and TNF-α, iNOS, OPN, and IL-6 expressions. During the histopathological examination, increased neuronal degenerations were observed in the HFCS group. Melatonin ameliorated these changes.Conclusion: Consumption of HFCS caused deterioration of learning and memory in adult rats. We suggest that melatonin is effective against learning and memory disorders.
کلیدواژه‌های انگلیسی مقاله High fructose corn syrup, Hippocampus, Learning, Memory, Melatonin
نویسندگان مقاله | Arzu Yalcin
Department of Physiology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey


| Mustafa Saygin
Department of Physiology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey


| Ozlem Ozmen
Department of Pathology, Faculty of Veterinary Medicine, Burdur Mehmet Akif Ersoy University, Burdur, Turkey


| Oguzhan Kavrik
Department of Physiology, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey


| Hikmet Orhan
Department of Biostatistics and Medical informatics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
نشانی اینترنتی https://ijbms.mums.ac.ir/article_21387.html
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