background: poisoning is considered an important public health issue. considering the high prevalence of poisonings and the diversity of their ensuing symptoms, this study aimed to investigate the epidemiology of the clinical symptoms of poisoning in children admitted to shahid madani and ta'min ejtema'i hospitals of khorramabad in 2011. methods: in this cross-sectional study, the dat...

The main biochemical function of biotin, one of the B complex group of vitamins, is as a coenzyme in certain enzymatic reactions associated with decarboxylation and carbon dioxide fixation. It thus has an important role in intermediary metabolism (1). Biotin is so widely distributed in foods and so abundantly produced by intestinal bacteria that it is doubtful whether a spontaneous biotin defic...

As the title of the special issue indicates, controversy surrounds augmentation of brain cognition in humans. Lacking efficacious drugs for Alzheimer’s disease (AD) and with many AD patients recruited for clinical trials that unfortunately do not provide the expected results, one wonders whether to test cognition enhancement strategies in individuals without symptoms of cognition decline. This ...