| ORIGINAL ARTICLE |
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| Year : 2016 | Volume
: 13
| Issue : 3 | Page : 136-139 |
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Effect of prednisolone on thyroid and gonadotrophic hormones secretion in male domestic rabbits
Barakat Elmahdi1, M Hassan2, Sabry Mohamed El-Bahr3
1 Department of Chemistry, College of Science, King Faisal University, Saudi Arabia; Department of Biochemistry, Faculty of Veterinary Medicine, University of Khartoum, Khartoum, Sudan
2 Department of Biochemistry, Faculty of Veterinary Medicine, University of Khartoum, Khartoum, Sudan
3 Department of Physiology, Biochemistry and Pharmacology (Biochemistry), College of Veterinary Medicine and Animal Resources, King Faisal University, Saudi Arabia; Department of Biochemistry, Faculty of Veterinary Medicine, Alexandria University, Egypt
Correspondence Address:
Sabry Mohamed El-Bahr
Department of Physiology, Biochemistry and Pharmacology (Biochemistry), College of Veterinary Medicine and Animal Resources, King Faisal University, Al-Ahsa, P.O. Box 400, Al-Hofuf 31982
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0973-0354.193135
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Context: An excess of endogenous and exogenous glucocorticoids causes many biochemical endocrine effects. Such alterations resulted in erroneous misleading interpretation of laboratory results. Aims: The effect of six intramuscular (I/M) injections of prednisolone on the serum concentrations of thyroxin (T 4 ), triiodothyronine (T 3 ), thyroid stimulating hormone (TSH), and luteinizing hormone (LH) of male domestic rabbits was assessed. Materials and Methods: Ten rabbits were assigned into two equal groups, treated and control groups. The treated group was injected prednisolone 1% at a rate of 2.2 mg/kg body weight every other day for a total of six doses. The control group was injected I/M with an equivalent volume of vehicle solution of prednisolone 1%. Statistical Analysis: All data were presented as mean ± standard error of mean by Student's t-test. All tests were performed using the Statistical Package for Social Science Program. Results: At day 6 of the experiment (after three injections of prednisolone), there were nonsignificant differences (P > 0.5) in serum T 4 , T 3 and TSH concentrations in prednisolone-treated animals compare to control. However, the concentration of serum LH was decreased significantly (P < 0.5) in prednisolone-treated animals compare to control. At day 12 of the experiment (after six injections of prednisolone), there were nonsignificant changes (P > 0.5) in the concentration of TSH in prednisolone-treated animals compare to control whereas the concentrations of serum T 4 , T 3 and LH were decreased significantly (P < 0.5) in prednisolone-treated animals compare to control. Conclusion: Multiple administration of prednisolone was clearly associated with substantial reduction in the concentrations of T 4 and T 3 and reduction of LH concentration without any effect on TSH concentration in serum of domestic rabbits. |
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