Fatty acid ethanolamides (FAE), a group of lipid mediators derived from long-chain fatty acids (FA), mediate biological activities including activation of cannabinoid receptors, stimulation of fat oxidation and regulation of satiety. However, how circulating FAE levels are influenced by FA intake in humans remains unclear. The objective of the present study was to investigate the response of six major circulating FAE to various dietary oil treatments in a five-period, cross-over, randomised, double-blind, clinical study in volunteers with abdominal obesity. The treatment oils (60 g/12 552 kJ per d (60 g/3000 kcal per d)) provided for 30 d were as follows: conventional canola oil, high oleic canola oil, high oleic canola oil enriched with DHA, flax/safflower oil blend and corn/safflower oil blend. Two SNP associated with FAE degradation and synthesis were studied. Post-treatment results showed overall that plasma FAE levels were modulated by dietary FA and were positively correlated with corresponding plasma FA levels; minor allele (A) carriers of SNP rs324420 in gene fatty acid amide hydrolase produced higher circulating oleoylethanolamide (OEA) (P=0·0209) and docosahexaenoylethanolamide (DHEA) levels (P=0·0002). In addition, elevated plasma DHEA levels in response to DHA intake tended to be associated with lower plasma OEA levels and an increased gynoid fat mass. In summary, data suggest that the metabolic and physiological responses to dietary FA may be influenced via circulating FAE. Genetic analysis of rs324420 might help identify a sub-population that appears to benefit from increased consumption of DHA and oleic acid.

Background: This study evaluated a multi-faceted, interdisciplinary intervention to reduce the use of benzodiazepines and antipsychotics in nursing homes – the “RedUSe” (Reducing Use of Sedatives) project.

Methods: The RedUSe project was a controlled trial conducted in 25 nursing homes in Tasmania, with 13 intervention and 12 control homes. A series of pharmacist-led strategies were provided to intervention homes including two medication audit and feedback cycles, educational sessions for staff and an interdisciplinary sedative review. Data on psychotropic drug use at each nursing home were collected utilizing a customized computer program at baseline, 12 and 26 weeks. The RedUSe project was registered as a controlled trial at the Australian New Zealand Clinical Trials Registry, registration number: ACTRN12608000221358.

Results: For each measure, an average of 1591 residents were audited. Over the six-month trial, there was a significant reduction in the percentage of intervention home residents regularly taking benzodiazepines (31.8% to 26.9%, p < 0.005) and antipsychotics (20.3% to 18.6%, p < 0.05), whereas control home psychotropic use did not alter significantly. For residents taking benzodiazepines and antipsychotics at baseline, there were significantly more dose reductions/cessations in intervention homes than in control homes (benzodiazepines: 39.6% vs. 17.6%, p < 0.0001; antipsychotics: 36.9% vs. 20.9%, p < 0.01).

Conclusions: RedUSe led to a significant reduction in the proportion of residents in nursing homes taking benzodiazepines and antipsychotics, and a significant increase in the number of dose reductions of these agents. Our findings suggest that a multi-faceted program, coordinated through a community pharmacy, can offer an effective approach in reducing psychotropic use in nursing homes.

Antioxidant vitamins have been reported to be associated with an improvement in blood lipid profiles, but results are not consistent. The present study was designed to determine whether long-term vitamin C supplementation could alter serum lipid concentrations in subjects who completed a 5-year population-based double-blind intervention trial. A total of 439 Japanese subjects with atrophic gastritis initially participated in the trial using vitamin C and β-carotene to prevent gastric cancer. Before and upon early termination of β-carotene supplementation, 134 subjects dropped out of the trial; finally, 161 subjects assigned to the high-dose group (500 mg vitamin C/d) and 144 subjects assigned to the low-dose group (50 mg vitamin C/d) were studied. No favourable effect of vitamin C supplementation on serum concentrations of total cholesterol, HDL- and LDL-cholesterol, and triacylglycerol was observed, although high-dose vitamin C supplementation increased serum vitamin C concentrations substantially. Among women, the mean change in serum triacylglycerol decreased (−0·12 mmol/l, 95 % CI −0·32, 0·09) in the high-dose group, but increased (+0·12 mmol/l, 95 % CI 0·03, 0·22) in the low-dose group. In addition, the mean change in serum triacylglycerol among women with hypertriacylglycerolaemia was statistically significant (−1·21, 95 % CI −2·38, −0·05) after high-dose vitamin C supplementation. The 5-year vitamin C supplementation had no markedly favourable effects on the serum lipid and lipoprotein profile. However, our present results do not preclude the possibility that vitamin C supplementation may decrease triacylglycerol concentrations among women with hypertriacylglycerolaemia.