Nutrition
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Randomized Controlled Trial Clinical Trial
Effects of barley intake on glucose tolerance, lipid metabolism, and bowel function in women.
The low consumption of grains that are rich sources of dietary fiber may be associated with the increasing prevalence of chronic diseases. This study was conducted to observe the effects of high barley (high-fiber diet) intake on glucose tolerance, lipid metabolism, and bowel function in healthy women. ⋯ This study demonstrated that barley intake has beneficial effects on lipid metabolism and bowel function and suggests that the intake of a high-fiber food, i.e., barley, should be recommended to prevent chronic diseases.
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I investigated whether metabolism of essential fatty acids and the concentrations of their long-chain metabolites (long-chain polyunsaturated fatty acids [LCPUFAs]) are altered in fetal or perinatal growth retardation, maternal hypercholesterolemia, low-grade systemic inflammation, insulin resistance, and atherosclerosis, conditions that predispose to the development of coronary heart disease (CHD). I critically reviewed the literature pertaining to the metabolism of essential fatty acids in CHD and conditions that predispose to it. LCPUFAs enhance endothelial nitric oxide synthesis, suppress the production of the proinflammatory cytokines tumor necrosis factor and interleukin-6, attenuate insulin resistance, and have antiatherosclerotic properties. ⋯ LCPUFAs can prevent various conditions that predispose to the development of CHD. The low incidence of CHD seen in adequately breast-fed infants can be linked to the LCPUFA content of breast milk. Based on this evidence, I suggest that provision of LCPUFAs during critical periods of growth, especially from the second trimester of pregnancy to age 5 y, prevents CHD in adult life.
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[corrected] A standard rodent diet for space flight must meet the unique conditions imposed by the space environment and must be nutritionally adequate because diet can influence the outcome of experiments. We evaluated the use of National Aeronautics and Space Administration (NASA) Foodbars as a standard space flight diet for rats. ⋯ Results indicated that NASA Rodent Foodbars meet the physical and nutritional criteria required to support rodents in the space environment and thus may be used successfully as a standard diet for short-term space flight studies. However, the nutritional adequacy of NASA Rodent Foodbars as a standard diet on longer-duration (>20 d) space flight missions remains to be determined.
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Our purpose is to highlight some of the past and potential future uses of microarray in nutrition research, while also commenting on some aspects of the design conduct and analysis of microarray data that will leave to improved data quality. ⋯ Microarrays are a very powerful tool for studying virtually every nutrition-related disease and trait and can provide valuable insights that are not obtainable with other techniques. However, unless nutrition researchers conduct their studies with scientific hard-mindedness, the studies will be of lower power at least if not completely misleading.