搜索结果: 151-165 共查到“医学 vitamin A”相关记录288条 . 查询时间(0.139 秒)
Vitamin A modifies the glycopeptide composition of cultured Sertoli cells
Vitamin A modifies glycopeptide composition cultured Sertoli cells
2009/2/23
Sertoli cells obtained from prepubertal rat testes were cultured in the presence or absence of retinol. Incorporation of monosaccharides and glycopeptide composition of the cells were studied under ...
Abnormalities of the Hypothalamic—Pituitary—Leydig Cell Axis in Young Adult Rats with Vitamin A Deficiency
vitamin A deficiency (VAD) hypogonadism testosterone Leydig cell hypothalamus
2009/2/19
The hypothalamic concentration of gonadotrophin releasing hormone (GnRH), the in vivo pituitary responses to GnRH, and the in vivo Leydig cell responses to bovine luteinizing hormone (LH) and to end...
Vitamin E deficiency causes incomplete spermatogenesis and affects the structural differentiation of epithelial cells of the epididymis in the rat
Vitamin E structural differentiation epithelial cells epididymis rat
2009/2/17
The effects of vitamin E deficiency on the rat testis and epididymis were examined in a light- and electron-microscopic analysis. Various groups of animals were made vitamin E-deficient, beginning...
Lipid peroxidation and human sperm motility: protective role of vitamin E
Asthenospermia lipid peroxidation vitamin E human spermatozoa
2009/2/16
Asthenospermia is the main factor of male infertility among patients consulting the Asir Infertility Center in Abha, Saudi Arabia. Lipid peroxidation occurring in both the seminal plasma and sperm...
An association of serum vitamin D concentrations < 40 nmol/L with acute respiratory tract infection in young Finnish men
Vitamin D respiratory infection insufficiency men public health 25-hydroxyvitamin D
2008/12/25
Background:The effects of vitamin D in regulating bone mineralization are well documented. The action of vitamin D as a key link between Toll-like receptor activation and antibacterial responses in in...
Beneficial Effects of Vitamin E in Sperm Functions in the Rat After Spinal Cord Injury
Sperm motility viability mitochondrial potential
2008/12/24
Male infertility as a result of spinal cord injury (SCI) is associated with abnormal semen qualities including low sperm counts and poor sperm motility and morphology. Clinical studies suggest th...
Vitamin E dietary supplementation significantly affects multiple risk factors for cardiovascular disease in baboons
Vitamin E HDL high-density lipoprotein antioxidants paraoxonase apo A-I apolipoprotein A-I baboons
2008/12/18
Background: Oxidative stress is a widely accepted risk factor for cardiovascular disease (CVD), but the CVD benefit of dietary antioxidants, such as vitamin E, is controversial.
Objective: Therefo...
Plasma vitamin B-6 forms and their relation to transsulfuration metabolites in a large, population-based study
Vitamin B-6 homocysteine cystathionine cysteine methylenetetrahydrofolate reductase transsulfuration
2008/12/17
Background: Vitamin B-6 exists in different forms; one of those forms, pyridoxal 5'-phosphate (PLP), serves a cofactor in many enzyme reactions, including the transsulfuration pathway, in which homocy...
Safety of vitamin D3 in adults with multiple sclerosis
Vitamin D safety 25-hydroxyvitamin D 25(OH)D multiple sclerosis
2008/12/17
Background: Vitamin D3 may have therapeutic potential in several diseases, including multiple sclerosis. High doses of vitamin D3 may be required for therapeutic efficacy, and yet tolerability—in the ...
Trends in blood folate and vitamin B-12 concentrations in the United States, 1988–2004
Nutrition survey age sex race ethnic groups National Health and Nutrition Examination Survey
2008/12/17
Background:Monitoring the folate status of US population groups over time has been a public health priority for the past 2 decades, and the focus has been enhanced since the implementation of a folic ...
Vitamin A supplementation in iodine-deficient African children decreases thyrotropin stimulation of the thyroid and reduces the goiter rate
Vitamin A iodine supplementation deficiency Africa
2008/12/17
Background: Vitamin A (VA) deficiency (VAD) and iodine deficiency (ID) often coexist in children in Africa. VAD may affect thyroid function and the response to iodine prophylaxis.Objective: The aim wa...
Vitamin D insufficiency in children, adolescents, and young adults with cystic fibrosis despite routine oral supplementation1,2,3
Cystic fibrosis vitamin D fat-soluble vitamins children adolescents
2008/12/17
Background: Cystic fibrosis (CF) with pancreatic insufficiency is associated with poor absorption of fat and fat-soluble vitamins, including vitamin D. Pancreatic enzyme supplementation does not compl...
Efficacy of daily and monthly high-dose calciferol in vitamin D–deficient nulliparous and lactating women
Vitamin D deficiency 25-hydroxyvitamin D 25(OH)D lactating women nulliparous women
2008/12/12
Background: We previously found a high prevalence of vitamin D deficiency and low medication regimen compliance in Arab and East Indian women residing in the United Arab Emirates (UAE). The appropriat...
Folate and vitamin B-12 status in relation to anemia, macrocytosis, and cognitive impairment in older Americans in the age of folic acid fortification
Aging anemia cognition disorders folate fortified food nutrition surveys vitamin B-12 deficiency
2008/12/12
Background:Historic reports on the treatment of pernicious anemia with folic acid suggest that high-level folic acid fortification delays the diagnosis of or exacerbates the effects of vitamin B-12 de...
Folic acid fortification: the good, the bad, and the puzzle of vitamin B-12
Folic acid fortification puzzle vitamin B-12
2008/12/12
We would not be allowed to conduct a clinical trial of a drug without proper monitoring procedures for both expected and unexpected outcomes; however, such a scenario occurred in 1998 when the Food an...