Cognitive enhancement drug use among resident physicians: Prevalence and motivations for use - results from a survey.

Non-medical use of prescription drugs for the enhancement of cognitive functioning has gained popularity in recent years, especially among young educated adults. To our knowledge, no previous study investigated this phenomenon among resident physicians. To analyze cognitive enhancement drugs use motivations and patterns among resident physicians.

The proliferative responsiveness of mesangial cells to postnephrectomy serum declines progressively with time elapsing after contralateral nephrectomy.

Postnephrectomy serum has been proved to enhance proliferation of mesangial cells in culture. Studies in offspring to uninephrectomized (UNx) mothers indicate that it remains active for a long period following UNx. On the other hand, postnephrectomy renal compensatory growth in vivo is known to be completed within a short period.