搜索结果: 46-60 共查到“医学 vitamin B-6”相关记录288条 . 查询时间(0.143 秒)
Patients with cystic fibrosis (CF) are at risk of
developing vitamin K deficiency because of pancreatic insufficiency,
hepatobiliary disease, or both.
Response of vitamin K status to different intakes and sources of phylloquinone-rich foods: comparison of younger and older adults
urinary g-carboxyglutamic acid phylloquinone bioavailability
2016/6/1
Phylloquinone, found in dark-green vegetables
and certain plant oils, is the primary dietary source of the fatsoluble
vitamin K. Limited data suggest that the relative
bioavailability of phylloquin...
Serum vitamin C concentrations and diabetes: findings from the third National Health and Nutrition Examination Survey, 1988–1994
diabetes mellitus diet surveys epidemiology
2016/5/31
Previous studies suggested that diabetes mellitus
may lower serum vitamin C concentrations, but most of these
studies used clinic-based populations with established diabetes
of varying duration and...
The role of nutritional epidemiology studies in
the development of nutritional recommendations has been
controversial, in part because individual studies supporting either
side of a given issue can...
Effect of 50- and 100-mg vitamin E supplements on cellular immune function in noninstitutionalized elderly persons
Elderly vitamin E cellular immune response
2016/5/31
It has been suggested that vitamin E can counteract
the age-associated decline in cellular immune responsiveness
(CIR). Particularly, T helper cell type 1 (Th1) activity, ie,
interferon (IFN) g–pro...
Toward a new recommended dietary allowance for vitamin C based on antioxidant and health effects in humans
Antioxidant cancer cardiovascular disease
2016/5/31
The current recommended dietary allowance
(RDA) for vitamin C for adult nonsmoking men and women is
60 mg/d, which is based on a mean requirement of 46 mg/d to
prevent the deficiency disease scurvy...
Alcohol, vitamin A, and β-carotene: adverse interactions, including hepatotoxicity and carcinogenicity
Ethanol alcohol retinol
2016/5/31
Isozymes of alcohol and other dehydrogenases
convert ethanol and retinol to their corresponding aldehydes in vitro.
In addition, new pathways of retinol metabolism have been described
in hepatic mi...
Biochemical but not clinical vitamin A deficiency results from mutations in the gene for retinol binding protein
Retinol binding protein transthyretin retinol retinyl esters
2016/5/31
Two German sisters aged 14 and 17 y were admitted
to the Tübingen eye hospital with a history of night blindness.
In both siblings, plasma retinol binding protein (RBP) concentrations
were below th...
Vitamin D supplementation, 25-hydroxyvitamin D concentrations, and safety
Calciferol calcidiol cholecalciferol
2016/5/31
For adults, the 5-mg (200 IU) vitamin D
recommended dietary allowance may prevent osteomalacia in
the absence of sunlight, but more is needed to help prevent
osteoporosis and secondary hyperparathy...
The compound we call vitamin D can no longer properly be
considered a vitamin, and for most mammals, it is not in any
sense even a nutrient. Nevertheless, vitamin D resembles true
vitamins inasmuch...
Safety of <7500 RE (<25000 IU) vitamin A daily in adults with retinitis pigmentosa
Vitamin A supplementation triacylglycerols
2016/5/31
Vitamin A supplementation is being used successfully
to treat some forms of cancer and the degenerative eye disease
retinitis pigmentosa. The daily biological need for vitamin A is estimated
to be ...
Age-related hearing loss, vitamin B-12, and folate in elderly women
hearing impairment presbycusis presbyacusis
2016/5/30
Hearing impairment is 1 of the 4 most prevalent
chronic conditions in the elderly. However, the biological basis
of age-related hearing loss is unknown.
Assessment of total body stores of vitamin A in Guatemalan elderly by the deuterated-retinol-dilution method
Vitamin A deuterated retinol dilution body stores
2016/5/30
Deuterated retinol dilution (DRD) gives
quantitative estimates of total body stores of vitamin A.
A vitamin E concentrate rich in tocotrienols had no effect on serum lipids, lipoproteins, or platelet function in men with mildly elevated serum lipid concentrations
Tocotrienols cholesterol HDL cholesterol
2016/5/30
Tocotrienols, lipid-soluble antioxidants with vitamin
E activity, have been reported to lower LDL-cholesterol
concentrations and platelet aggregation in men, but results are
contradictory.
Vitamin A assessment by the isotope-dilution technique: good news from Guatemala
Vitamin A isotope-dilution technique
2016/5/30
Unlike many vitamins, vitamin A is absorbed fairly well, is stored efficiently in the liver as well as in other organs, is recycled extensively within the body, and is catabolized irreversibly in heal...