Biochemical and molecular investigation of oxidative stress associated with urolithiasis induced by increased dietary calcium or protein in chickens |
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| Authors: | Mahmoud G El Sebaei Nagah Arafat Reham A El-Shafei Mohamed A El-Adl Amany Farag Abeer E Aziza Abdelfattah H Eladl |
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| Institution: | 1. Department of Biomedical Sciences, College of Veterinary Medicine, King Faisal University, Al-Ahsa, Saudi Arabia;2. Department of Poultry Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt;3. Department of Pharmacology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt;4. Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt;5. Department of Histology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt;6. Department of Nutrition, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt |
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| Abstract: | This study was carried out to evaluate the effects of induced urolithiasis by high dietary calcium (Ca) or protein levels on biochemical analyte levels, redox status, selected inflammatory cytokines and histopathology in chickens. A total of 90 one-day-old white Hy-Line chicks were fed basal control diets containing 20% crude protein (CP) and 1% Ca until they reached 44 days of age. After that, the birds were divided into three groups (30 birds per group). All management factors (light, temperature, ventilation, stock density and diet) were identical among the three groups throughout the study except for the dietary Ca and protein percentages. Group I was fed a control diet containing 20% CP and 1% Ca, group II was fed a high-Ca diet containing 5% Ca, and group III was fed a high-protein diet containing 25% CP. Our findings clearly demonstrated that dietary imbalance (caused by high-Ca or high-CP levels) per se in chickens was physiologically harmful, as it was accompanied by post-mortem lesions; biochemical, redox status and histopathological alterations; and upregulation of inflammatory cytokines (interleukin (IL)-1β and IL-6). In particular, the birds fed the high-Ca diet clearly exhibited the most obvious alterations in most of the endpoints. In conclusion, this study constitutes the first extensive investigation of the effects of high-Ca or high-protein diets induced urolithiasis on growth performance, redox status, inflammatory cytokine levels and pathological characterization in chickens. |
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| Keywords: | biochemical analytes chickens cytokines high Ca high-protein diet histopathology Urolithiasis |
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