منابع مشابه
[Is chromium an essential trace element in human nutrition?].
It has been recognized that chromium is an essential trace element associated with carbohydrate metabolism, and chromium deficiency causes an impaired glucose tolerance. Recently, however, Vincent et al. have reported that chromium is not an essential trace element. In the present report, the author evaluated the nutritional essentiality of chromium by reviewing several previous reports. In alm...
متن کاملSilicon as an essential trace element in animal nutrition.
Within the last decade silicon has been recognized as participating in the normal metabolism of higher animals and as being an essential trace element. Silicon is found to perform an important role in connective tissue, especially in bone and cartilage. Bone and cartilage abnormalities are associated with a reduction in matrix components, resulting in the establishment of a requirement for sili...
متن کاملZinc is an essential trace element for spermatogenesis.
Zinc (Zn) plays important roles in various biological activities but there is little available information regarding its functions in spermatogenesis. In our current study, we further examined the role of Zn during spermatogenesis in the Japanese eel (Anguilla japonica). Human CG (hCG) was injected into the animals to induce spermatogenesis, after which the concentration of Zn in the testis inc...
متن کاملZinc, the Trace Element Essential in Living Organisms
Zinc is a metallic element, of symbol Zn and atomic number 30, that is placed in the group 12 of the periodic table. As an essential trace element, zinc is required to support human biochemical processes. It is found in nearly 200 specific enzymes in the living organisms, and it also serves as structural cofactor for many cellular proteins. [1] Zinc may exert pleiotropic effects in organism; fo...
متن کاملIs radiation an essential trace energy ?
Radiation protection policy in the United States and in most of the world is based on the assumption that the risk of a radiation induced fatal cancer is linearly proportional to the dose. This is known as the linear, no-threshold (LNT) model of radiation risk. There are no human data to support this assumption for a short-term dose below 0.2 Gy ̄the equivalent of about two centuries of exposure...
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ژورنال
عنوان ژورنال: Medical Journal of Clinical Trials & Case Studies
سال: 2018
ISSN: 2578-4838
DOI: 10.23880/mjccs-16000171