The effectiveness of caffeinated chewing gum in ameliorating cognitive functions affected by sleep deprivation.

Objectives: This investigation aimed to compare caffeinated gums with two different dosages of caffeine (200mg vs. 300mg) by assessing their effectiveness on the improvement of cognitive functions among Iranian individuals voluntarily suffering from 30 hours of sleep deprivation.

Material And Methods: Thirty-four healthy male volunteers with ages from 28 to 35 years old were randomly assigned to either 200 or 300mg caffeine intake.

The protective effects of Arctium lappa L. Extract on testicular injuries induced by ethanol in rats.

The aim of this study is to assess the antioxidant activity and also protective effects of Arctium lappa L. (AL) extract on ethanol-induced testicular injuries in rats. In addition, the total phenol and flavonoid contents of the methanolic extracts were analysed and the antioxidant activity of the extract was investigated.

A comparative immunohistochemical study of Ki-67 and Bcl-2 expression in solid ameloblastoma and adenomatoid odontogenic tumor.

Background: Solid ameloblastoma (SAB) is an invasive tumor which infiltrates adjacent normal tissues. Adenomatoid odontogenic tumor is a noninvasive tumor and never infiltrates surrounding normal tissues. The purpose of this study was to determine the biological behavior of these two epithelial odontogenic neoplasm by detecting Ki-67 and Bcl-2, which are mitotic and anti apoptotic markers respectively.

Closure of a muscular ventricular septal defect using the Amplatzer ventricular occluder.

Surgical closure of ventricular septal defect is safe, however, the inherent risks associated with cardiopulmonary bypass and the potential early and late postsurgical complications including complete heart block, arrhythmias, postpericardiotomy syndrome, and rare deaths have led physicians to prefer transcatheter occlusion technique for closure of such defects. The use of Amplatzer muscular ventricular septal defect occluder is safe and associated with a higher success rate than other previously used devices. For the first time in Iran, we report an 18-year-old patient with ventricular septal defect who was successfully treated using the Amplatzer ventricular septal defect occluder.