TY - JOUR
T1 - Hormonal replacement therapy in an animal model with chronic renal failure and gonadectomy
T2 - Biochemical and hematological study
AU - Ali, Badreldin
AU - Ahmed, Ibrahim
PY - 2006/7/1
Y1 - 2006/7/1
N2 - The aim of the present study was to investigate the effects of subcutaneous administration of estradiol propionate (450 μg/kg female rat/day) or testosterone propionate (2 mg/kg male rat/day) for 4 weeks on some biochemical and hematological variables in intact and gonadectomized male and female rats with chronic renal failure (CRF) induced by 7/8 nephrectomy (remnant kidney model). Twenty-four hours after the last injection, rats were decapitated and blood samples were collected for complete hemogram and for measuring the concentrations of creatinine, urea, and indoxyl sulphate in plasma. Body weights of all rats were taken every week during the experimental period. The hematological and biochemical parameters measured in the sham-operated and gonadectomized rats were not significantly different from those in intact rats. Induction of CRF significantly increased the concentrations of creatinine, urea, and indoxyl sulphate by about 90-300% (P < 0.05), and caused signs indicative of anemia. These effects were significantly exacerbated in gonadectomized rats with CRF, and were partially and significantly reversed by exogenous administration of testosterone/estradiol. The changes induced by CRF and gonadectomy on the hematocrit (HTC) and hemoglobin concentration (HGB) were more pronounced in females than in males. The HTC and HGB in gonadectomized male rats with CRF were not significantly different from the controls. In the rest of the groups, there were no significant gender effects in the measured variables. It is suggested that, in the used rat model of CRF, there is depressed growth; significant increases in the plasma concentrations of creatinine, urea, and indoxyl sulphate; and anemia. All these signs were significantly and partially reversed by estradiol and testosterone therapy equally in female and male rats, respectively.
AB - The aim of the present study was to investigate the effects of subcutaneous administration of estradiol propionate (450 μg/kg female rat/day) or testosterone propionate (2 mg/kg male rat/day) for 4 weeks on some biochemical and hematological variables in intact and gonadectomized male and female rats with chronic renal failure (CRF) induced by 7/8 nephrectomy (remnant kidney model). Twenty-four hours after the last injection, rats were decapitated and blood samples were collected for complete hemogram and for measuring the concentrations of creatinine, urea, and indoxyl sulphate in plasma. Body weights of all rats were taken every week during the experimental period. The hematological and biochemical parameters measured in the sham-operated and gonadectomized rats were not significantly different from those in intact rats. Induction of CRF significantly increased the concentrations of creatinine, urea, and indoxyl sulphate by about 90-300% (P < 0.05), and caused signs indicative of anemia. These effects were significantly exacerbated in gonadectomized rats with CRF, and were partially and significantly reversed by exogenous administration of testosterone/estradiol. The changes induced by CRF and gonadectomy on the hematocrit (HTC) and hemoglobin concentration (HGB) were more pronounced in females than in males. The HTC and HGB in gonadectomized male rats with CRF were not significantly different from the controls. In the rest of the groups, there were no significant gender effects in the measured variables. It is suggested that, in the used rat model of CRF, there is depressed growth; significant increases in the plasma concentrations of creatinine, urea, and indoxyl sulphate; and anemia. All these signs were significantly and partially reversed by estradiol and testosterone therapy equally in female and male rats, respectively.
KW - Chronic renal failure
KW - Estradiol
KW - Gonadectomy
KW - Hemogram
KW - Rats
KW - Testosterone
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U2 - 10.1080/08860220600598979
DO - 10.1080/08860220600598979
M3 - Article
C2 - 16771249
AN - SCOPUS:33745561034
SN - 0886-022X
VL - 28
SP - 331
EP - 335
JO - Renal Failure
JF - Renal Failure
IS - 4
ER -