Vitamin D supplementation, the metabolic syndrome and oxidative stress in obese children.

BACKGROUND: Previous studies suggest that vitamin D may play a role in cardiovascular and metabolic health. Oxidative stress has also been implicated in the development of cardiovascular disease. Evidence suggests that vitamin D deficiency may contribute to the occurrence of oxidative stress. This study aimed to determine whether treatment and correction of vitamin D deficiency in obese children led to changes in their metabolic profile, independent of changes in adiposity. In addition, we aimed to determine whether vitamin D deficiency and oxidative stress are causally related in obese children. METHODS: In the retrospective arm, chart review identified 32 obese children who experienced normalization of vitamin D deficiency or insufficiency with vitamin D supplementation. We then correlated laboratory and anthropometric data with vitamin D levels. In the prospective arm of the study, urinary 8-isoprostane and hydrogen peroxide were measured before and after correction of vitamin D deficiency/insufficiency and correlated to vitamin D levels in seven patients. RESULTS: In our predominantly Hispanic population of obese children in an urban setting, we demonstrated a cause-effect relationship between vitamin D deficiency and oxidative stress. In contrast, we found no association between vitamin D status, adiposity, and markers of insulin sensitivity, nor any effect of vitamin D treatment on the same parameters. CONCLUSIONS: These discordant findings suggest a differential effect of vitamin D on cardiovascular risk factors such as oxidative stress and insulin resistance. To confirm these findings, further prospective studies with larger sample size and longer follow-up are warranted.

Relaxation response-based yoga improves functioning in young children with autism: a pilot study.

OBJECTIVES: The study objectives were to develop and objectively assess the therapeutic effect of a novel movement-based complementary and alternative medicine approach for children with an autism-spectrum disorder (ASD). DESIGN: A within-subject analysis comparing pre- to post-treatment scores on two standard measures of childhood behavioral problems was used. SETTINGS AND LOCATION: The intervention and data analysis occurred at a tertiary care, medical school teaching hospital. SUBJECTS: Twenty-four (24) children aged 3-16 years with a diagnosis of an ASD comprised the study group. INTERVENTION: The efficacy of an 8-week multimodal yoga, dance, and music therapy program based on the relaxation response (RR) was developed and examined. OUTCOME MEASURES: The study outcome was measured using The Behavioral Assessment System for Children, Second Edition (BASC-2) and the Aberrant Behavioral Checklist (ABC). RESULTS: Robust changes were found on the BASC-2, primarily for 5-12-year-old children. Unexpectedly, the post-treatment scores on the Atypicality scale of the BASC-2, which measures some of the core features of autism, changed significantly (p=0.003). CONCLUSIONS: A movement-based, modified RR program, involving yoga and dance, showed efficacy in treating behavioral and some core features of autism, particularly for latency-age children.

Propofol or process: what really affects efficiency?

Due to increased public awareness, the number of endoscopic procedures performed per year is rapidly increasing. In lieu of expanding endoscopy units, current practices are being reviewed to improve unit efficiency without compromising patient care. Changing from a traditional medication regimen of demerol/versed or fentanyl/versed to propofol for moderate sedation is currently controversial. Studies using propofol are being conducted to measure recovery times, safety of administration by healthcare providers other than anesthesia providers, cost/benefit ratios, and patient satisfaction. In order to measure the benefits of propofol versus a traditional medication regimen, a retrospective review of 1,056 charts was conducted to evaluate the difference in procedure and post-procedure time between sedation groups before and after a process change. In this study, the use of propofol was associated with a statistically significant shorter mean procedure time (p <.001) and nonsignificant post-procedure time (p =.056) than a traditional regimen; however, a statistically significant reduction in mean times was demonstrated by changes in process (p <.001). The use of propofol demonstrated an actual total time savings of 5.3 minutes per case after the process change. This difference was not large enough for the authors to change current practice of traditional medication for moderate sedation when all other issues related to propofol were taken into consideration.