Burnout levels among medical residents are considered high. A lack of social support has shown to have a direct effect on emotional exhaustion, and depersonalization, two of the three burnout indicators. In this study, we examined the satisfaction of medical residents with social support (emotional, appreciative and informative) received from supervisors, fellow medical residents, nurses and patients. In addition, the correlation between social support and burnout was studied. Medical residents were significantly more dissatisfied with the emotional, appreciative and informative support received from their supervisors compared with fellow residents and nurses (respectively, 13.4+/-4.0 vs. 9.9+/-2.8 and 10.0+/-2.4; 10.0+/-2.9 vs. 7.4+/-2.0 and 7.3+/-1.8; and 7.2+/-2.3 vs. 5.4+/-1.6 and 5.3+/-1.5; p<.001). Significant independent effects were found on emotional exhaustion: from dissatisfaction with emotional support [Beta=.44, p<.001, total R2=.25] and dissatisfaction with appreciative support from supervisors [Beta=.30, p<.01, total R2=.11]. Moreover, dissatisfaction with emotional support from supervisors had an independent significant effect on depersonalization [Beta=.33, p=.001, total R2=.14]. The best predictor of burnout appeared to be dissatisfaction with emotional support received from supervisors. Our results suggest that intervention programs should not only focus on the medical residents, but also on the supervisors to improve their supportive skills.

We examined levels of burnout and relationships between burnout, gender, age, years in training, and medical specialty in 158 medical residents working at the University Medical Center Groningen, the Netherlands. Thirteen percent of the residents met the criteria for burnout, with the highest percentage of burnout cases among medical residents in Psychiatry. Significantly more male residents than female residents suffered from severe burnout. Medical residents reported significantly lower mean scores on personal accomplishment than medical specialists and other health care workers; they also reported lower mean scores on emotional exhaustion than medical specialists. Male residents had significantly higher depersonalization scores than female residents. Positive significant relationships were found between personal accomplishment and age and years in training. Obstetrics & Gynecology residents reported significantly more personal accomplishment than residents in Psychiatry, Internal Medicine, Pediatrics, and Anesthesiology. Residents in Psychiatry had significantly lower scores on personal accomplishment than residents in Internal Medicine. Our findings show that burnout is present in a small but significant number of medical residents.

There is increasing evidence for the existence of intrahepatic regulation of glucose metabolism by Kupffer cell products. Nitric oxide (NO) is known to inhibit gluconeogenic flux through pyruvate carboxylase and phosphoenolpyruvate carboxykinase. However, NO may also influence glucose metabolism at other levels. Using hepatocytes from fasted rats incubated with the NO-donor S-nitroso-N-acetylpenicillamine, we have now found that the synthesis of glycogen from glucose is even more sensitive to inhibition by NO than gluconeogenesis. Inhibition of glycogen production by NO was accompanied by a rise in intracellular glucose 6-phosphate and UDPglucose. Activity of glycogen synthase, as measured in extracts of hepatocytes after the cells had been exposed to NO, was decreased. Experiments with gel-filtered liver extracts revealed that inhibition of glycogen synthase was caused by an inhibitory effect of NO on the conversion of glycogen synthase b into glycogen synthase a.

To evaluate whether interferon-gamma (IFN-gamma) is involved in the interaction between the immune and endocrine systems in vivo, we studied six healthy subjects twice in a placebo-controlled trial: once after administration of recombinant human IFN-gamma and, on another occasion, after administration of saline. The rate of appearance of glucose was determined by infusion of [6,6-2H2]glucose and resting energy expenditure by indirect calorimetry. Human leukocyte antigen-DR gene expression on monocytes and serum neopterin increased after administration of IFN-gamma (P < 0.05 vs. control). IFN-gamma increased serum interleukin-6 levels significantly. Levels of tumor necrosis factor-alpha remained below detection limits. IFN-gamma increased plasma concentrations of ACTH and cortisol (P < 0.05 vs. control), IFN-gamma did not alter concentrations of growth hormone, (nor)epinephrine, insulin, C peptide, glucagon, or insulin-like growth factor I. IFN-gamma did not alter plasma concentrations of glucose and free fatty acids nor the rate of appearance of glucose. IFN-gamma increased resting energy expenditure significantly. We conclude that IFN-gamma is a minor stimulator of the endocrine and metabolic pathways. Therefore, IFN-gamma by itself is probably not a major mediator in the interaction between the immune and the endocrine and metabolic systems.

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