Selenium
Kanker
- Effects of selenium supplementation for cancer prevention in patients with carcinoma of the skin. A randomized controlled trial. Nutritional Prevention of Cancer Study Group
Selenium treatment did not protect against development of basal or squamous cell carcinomas of the skin. However, results from secondary end-point analyses support the hypothesis that supplemental selenium may reduce the incidence of, and mortality from, carcinomas of several sites. These effects of selenium require confirmation in an independent trial of appropriate design before new public health recommendations regarding selenium supplementation can be made. - Decreased incidence of prostate cancer with selenium supplementation: results of a double-blind cancer prevention trial
Although selenium shows no protective effects against the primary endpoint of squamous and basal cell carcinomas of the skin, the selenium-treated group had substantial reductions in the incidence of prostate cancer, and total cancer incidence and mortality that demand further evaluation in well-controlled prevention trials. - Nutritional aspects of prostate cancer: a review
Several double-blind placebo-controlled clinical trials have shown that supplementation with selenium reduces cancer incidence. - Micronutrients and cancer chemoprevention
Accumulating evidence suggests that a number of micronutrients may decrease the incidence of cancer of epithelial cell origin. These include vitamins A, C and E, beta-carotene and selenium. - Selenium in cancer prevention: a review of the evidence and mechanism of action
The evidence for Se as a cancer preventive agent includes that from geographic, animal, prospective and intervention studies. Newly-published prospective studies on oesophageal, gastric-cardia and lung cancer have reinforced previous evidence, which is particularly strong for prostate cancer. Interventions with Se have shown benefit in reducing the risk of cancer incidence and mortality in all cancers combined, and specifically in liver, prostate, colo-rectal and lung cancers. The effect seems to be strongest in those individuals with the lowest Se status.
Immuunsysteem
- Selenium and the immune system
The paper presents the current knowledge about the role of the trace element selenium in the immune system, and possible mechanisms of its action during the immune response. Investigations to date, based on animal and human models, have delivered increasing evidence of Se involvement in the functioning of the immune system. Recently, the importance of selenium in the progression of some viral diseases (e.g. AIDS) has been revealed. However, several questions remain to be explained, such as the turnover of selenium compounds in the cells of the immune system, since no complete theoretical framework yet exists at the molecular level. The problem of the influence of dietary selenium (included in the normal diet, or a diet only slightly modified with selenium) on human immune functions also needs to be resolved. - Modulatory effects of selenium and zinc on the immune system
As a constituent of selenoproteins, selenium is needed for the proper functioning of neutrophils, macrophages, NK cells, T lymphocytes and some other immune mechanisms. Elevated selenium intake may be associated with reduced cancer risk and may alleviate other pathological conditions including oxidative stress and inflammation. Selenium appears to be a key nutrient in counteracting the development of virulence and inhibiting HIV progression to AIDS. It is required for sperm motility and may reduce the risk of miscarriage. Selenium deficiency has been linked to adverse mood states and some findings suggest that selenium deficiency may be a risk factor in cardiovascular diseases. - An increase in selenium intake improves immune function and poliovirus handling in adults with marginal selenium status
The data indicate that these subjects had a functional selenium deficit with suboptimal immune status and a deficit in viral handling. They also suggest that the additional 100 microg Se/d may be insufficient to support optimal function.
SITE MAP
Maagdarmstoornissen: Candida infectie - Prikkelbaredarmsyndroom - Crohn - Colitus Ulcerosa - CVS/ME: Chronische vermoeidheid Syndroom - Diabetische complicaties: Bloeduiker stabilisatie - Neuropathie - Retinopathie - Nefropathie - Hart- en vaatziekten: Cardiomyopathie en Hartfalen - Hoge bloeddruk - Cholesterol verlaging - Aderverkalking (atherosclerose) - Spataderen - Levensverlenging: 100 jaren jong - DHEA - Melatonine - 65+ - Kanker: - Ondersteuningstherapie bij kanker - Bot en gewrichtsaandoeningen: - Artrose - Artritis - Osteoporose - Fibromyalgie: - Fibromyalgie - Urinewegaandoeningen: - Prostaatklachten - Blaasontsteking - Vrouwenklachten: Menopauze - Premenstrueelsyndroom - Overgewicht: - Overgewicht - SLIM - Oogaandoeningen: Staar - Slecht zien Andere artikelen: - HPU - Astma - Multiple Sclerose - Psoriasis - Depressie
Maagdarmstoornissen: Candida infectie - Prikkelbaredarmsyndroom - Crohn - Colitus Ulcerosa - CVS/ME: Chronische vermoeidheid Syndroom - Diabetische complicaties: Bloeduiker stabilisatie - Neuropathie - Retinopathie - Nefropathie - Hart- en vaatziekten: Cardiomyopathie en Hartfalen - Hoge bloeddruk - Cholesterol verlaging - Aderverkalking (atherosclerose) - Spataderen - Levensverlenging: 100 jaren jong - DHEA - Melatonine - 65+ - Kanker: - Ondersteuningstherapie bij kanker - Bot en gewrichtsaandoeningen: - Artrose - Artritis - Osteoporose - Fibromyalgie: - Fibromyalgie - Urinewegaandoeningen: - Prostaatklachten - Blaasontsteking - Vrouwenklachten: Menopauze - Premenstrueelsyndroom - Overgewicht: - Overgewicht - SLIM - Oogaandoeningen: Staar - Slecht zien Andere artikelen: - HPU - Astma - Multiple Sclerose - Psoriasis - Depressie
