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Mon, Jul

Scientists find why "sunshine" vitamin D is crucial for immune system and killer T cells - Reuters (article link)

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Researchers found that immune systems' killer cells, known as T cells, rely on vitamin D to become active and remain dormant and unaware of the possibility of threat from an infection or pathogen if vitamin D is lacking in the blood.
- "When a T cell is exposed to a foreign pathogen, it extends a signaling device or 'antenna' known as a vitamin D receptor, with which it searches for vitamin D,"
- "This means the T cell must have vitamin D or activation of the cell will cease. If the T cells cannot find enough vitamin D in the blood, they won't even begin to mobilize."
Scientists find why "sunshine" vitamin D is crucial
(Reuters) - Vitamin D is vital in activating human defences and low levels suffered by around half the world's population may mean their immune systems' killer T cells are poor at fighting infection, scientists said on Sunday.
http://www.reuters.com/article/idUSTRE6261IX20100308