Histological study on the staining potentials of Aqueous extract of Ceratonia Siliqua bark

This study was designed to determine the staining potentials of aqueous extract of Ceratonia Siliqua bark adapted for the first time as a counter stain in Haematoxylin and Eosin staining reaction. The staining solution was used to stain liver, lung and kidney sections. Phytochemical screening of the extract revealed the presence of tannin (hennatonic acid or Lawsone), while results of the staining reactions showed that Ceratonia siliqua at a low pH, has intense staining qualities, confirming further that the effectiveness of a stain is influenced by the pH of its environment.Key words: Ceratonia siliqua, Extract, Haematoxylin and Eosin, Counterstain, General tissue structure

The effect of L-arginine on contralateral testes following 7200 Torsion - Detorsion of the Ipsilateral testes.

This study was designed to evaluate the effect of torsion-detorsion on ipsilateral testes at 7200 and at time intervals, on the histology of contralateral testes. 20 male rats (130-200g) were involved in the study and allowed to acclimatize for three weeks. They were fed with commercial livestock feeds and tap water ad-libitum, and grouped into seven groups (A-G) of three rats each. In groups A-F, unilateral testicular torsion lasting for 15, 30, and 45 minutes was created. Alternate groups (A, C, and E) were treated intraperitoneally with 150mg/kg/body weight of  Larginine for 1 hour after detorsion, while the remaining groups (B,D,F) were untreated with L-arginine but still allowed to undergo 1 hour detorsion. Group G served as the control. The results showed that group A presented normal seminiferous tubules with intact sertoli cells, and germ cells at various stages of development. The untreated group B presented atrophic seminiferous tubules with loss of germs cells and no luminal spermatozoon, while group D presented normal features except for interstitial hemorrhage. Normal features were observed for groups E (treated) and F (untreated). Thus, L-arginine tends to reduce oxidative stress in the contralateral testes thereby preventing interstitial oedema and preserving the spermatogenic series.Keywords: Torsion-detorsion, Ipsilateral, Contralateral, L-arginine, Ischemia, Reperfusion