Sleep loss and fatigue in residency training: a reappraisal

Reduced sleep time is commonplace for many interns and residents. Recent studies, however, suggest that sleep loss and fatigue result in significant neurobehavioral impairments in healthy young adults. We reviewed studies addressing the effects of sleep loss on cognition, performance, and health in surgical and nonsurgical residents. We describe the effectiveness of countermeasures for sleepiness, including recent work-hour restrictions. A more complete understanding of the issues of sleep loss during residency training can inform innovative strategies to minimize the effects of sleepiness and fatigue on patient care and resident safety.      

Nefazodone and the treatment of nonparaphilic compulsive sexual behavior: a retrospective study

BACKGROUND: Recent reports suggest that individuals with nonparaphilic compulsive sexual behavior can be treated pharmacologically with selective serotonin reuptake inhibitors (SSRIs) to control sexual obsessions and compulsions. However, these medications have produced sexual side effects that may limit long-term use, particularly as individuals strive to reestablish healthy sexual relationships. Nefazodone is an antidepressant that is not associated with the sexual side effects of other SSRIs. We examined retrospective data from our clinic to investigate whether nefazodone has utility in the treatment of nonparaphilic compulsive sexual behavior. METHOD: Fourteen subjects who met DSM-IV criteria for sexual disorder NOS as well as criteria used by our research group for nonparaphilic compulsive sexual behavior and who had been treated with nefazodone were selected from patient charts at our clinic. The treating physician abstracted information from the charts regarding comorbid psychiatric conditions, medication, dosage, treatment response, and side effects. RESULTS: In this study, the mean dosage of nefazodone was 200 mg/day. Of the subjects who remained on long-term nefazodone therapy, 6 (55%) reported good control of sexual obsessions and compulsions, and 5 (45%) reported a remission of sexual obsessions and compulsions. CONCLUSION: Results from this preliminary retrospective study suggest that nefazodone decreases the frequency of sexual obsessions and compulsions but does not produce the undesired sexual side effects caused by SSRI treatment.     

Anti-CD40, anti-CD3, and IL-2 stimulation induce contrasting changes in CB1 mRNA expression in mouse splenocytes

The expression and function of cannabinoid receptor 1 (CB1) in mouse immune cells is unclear. Here we show that splenic B cells express more CB1 mRNA than T cells. Furthermore, splenocytes stimulated with the T cell mitogens, PMA/Io and anti-CD3, showed a decrease in CB1 message while cultures stimulated with the B cell mitogen, anti-CD40 antibody, showed an increase in message. In addition, co-treatment with mitogens and IL-2 uniformly caused an increase in CB1 mRNA. It is suggested that signaling pathways activated by T cell mitogens lead to decreased CB1 gene activation while pathways activated by B cell mitogens and IL-2 lead to increased CB1.