Marjaneh Kazerooni Corresponding Author
- Department of physilolgy, Medicin faculty, Shiraz Medical Sciences University, Shiraz, Iran
Gity Nayeri Kaman
- Department of physilolgy, Medicin faculty, Shiraz Medical Sciences University, Shiraz, Iran

Received: 4/1/2000 Accepted: 4/1/2000 - Publisher : Avicenna Research Institute

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This study carried out to investigate the reversible effect of cimetidine on: Sperm count and Sperm motility in male rat. 80 mature male Charles River rats (285 - 315 gr) divided in to 8 groups: blank (G1), received no treatment at all, control, received 100 mg / kg / day normal saline IP for 5 weeks (G2).The other six groups received 100 mg / kg / day cimetidine IP for 1 Week (G3), 2 weeks (G4), 3 weeks (G5), 4 weeks (G6), 5 weeks (G7) 6 weeks (G8). However G8 during the last sixth week received notreatment. When the animal was anesthetized sperm samples taken from vasdeferens to investigate its motility and counts.Results revealed that sperm count decreased in the test compare to control and blank groups and nonmotile sperm increased in test (G3- G7) compare to control groups. However in G8 which sperm count and motility were analyzed one week after termination of cimetidine injection there were no significant differences in this parameter between controls and test. So the effect of cimetidine on sperm count and motility is reversible. We concluded that the reduction in sperm count and motility may be due to the direct effect of cimetidine on seminiferus tubules, which is reversible.

Keywords: Rat, Cimetidine, Sperm, Spermatogenesis

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