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Histological and histometric changes in the testes of albino Wistar rats were correlated. Wistar rats weighing between 180-240 g were randomly divided into three groups of ten rats each. One group served as control and the rats were given normal saline. The second and third groups received 2 mg/kg and 4 mg/kg body weights of chloroquine phosphate daily for thirty days respectively. Seminiferous tubules of animals treated with chloroquine phosphate were irregular in shape and were also isolated compared to control. Marked disruption of the inter-tubular stroma of testes in the treated groups was also observed. Histometric variations in testicular tissue was observed in the experimental animals following treatment with chloroquine phosphate. The 2 mg/kg body weight and 4 mg/kg body weight animals recorded significantly lower [P&lt; 0.05] relative germinal epithelial volume of 43.95 % and 32.70 % respectively when compared to the control (51.75 %). The volume of stroma in the third group (49.33 %) was significantly higher [P &lt; 0.05] when compared to the control (16.83 %) and 2 mg/kg body weight rats (22.83 %). We observed negative correlation coefficient between lumen and seminiferous tubular volume in the control group compared to the other groups which showed a positive correlation. Correlation between germinal epithelium and seminiferous tubular volume were positive in all groups. These findings have thrown more light on recognized histological changes by accurately grading these changes which offers objectivity and increased precision compared with direct visual appraisal.

Correlation of histological and histometric changes in rats testes treated with chloroquine phosphate