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Paper Information

Journal:   SCIENTIFIC-RESEARCH IRANIAN VETERINARY JOURNAL   SPRING 2008 , Volume 4 , Number 1 (18); Page(s) 57 To 67.
 
Paper: 

A HISTOMORPHOMETRICAL STUDY OF TESTIS IN EXPERIMENTAL UNILATERAL CRYPTORCHIDISM IN ADULT RATS

 
 
Author(s):  SAFAVI E., SHAROUZ R., SADRKHANLOU R.A., SARAFZADEH F.
 
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Abstract: 
Morphometrical changes in the testis of adult rats after unilateral experimental cryptorchidism were investigated. Adult male wistar rats (150-200 gr) were divided into 5 groups of 8 animals each. Three groups were created unilaterally experimental cryptorchidism by fixation of right testis to abdomind wall. In the first, second and third groups, respectively, 15, 30 and 60 days after operation, the animals were dissected and their testis was sampled. In the forth group, as a sham after incision, testis were replaced from scrotum to abdominal cavity and then returned to scrotum. In the fifth group, as a control group no operation was done. Testis were studied histomorphometrically after sampling and fixation in salin formalin 10% , tissue processing and preparing histological section and staining with H&E method. Highly significant (P<0.01) decrease of diameter of somniferous tubule in cryptorchid testis in 30 and 60 days after opration was observed. In the left testis (hypertrophic) in 15, 30, 60 days after opration a significant (P<0.05) increase of diameter of Somniferous tubules in comparson to control group was observed. Thickness of epithelium of somniferous tubules in cryptorchid testis in each three groups decreased significantly (P<0.05), in contrast to the left testis which significantly (P<0.05) increased. Thickness of interstitial tissue in cryptorchid testis 30 and 60 days after operation increased highly significantly (P<0.01), in contrast to the left testis which decreased significantly (P<0.05) in the same group. Thickness of testicular capsule significantly (P<0.05) increased. Number of spermatogonies, primary spermatocytes and spermatids in somniferous tubules decreased highly significantly (P<0.01) and sertoli cells decreased significantly (P<0.05) in cryptorchid testis, 30 and 60 days after operation but no significant alteration was seen in the left testis. No significant changes were noticed in all the parameters between sham and control groups.
 
Keyword(s): CRYPTORCHIDISM, HISTOMORPHOMETRY, TESTIS, RAT
 
References: 
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