snímek PPT
Function of B12: myelin (?funicular myelosis) and folate synthesis
Deficiency:
- total vegetarianism
- malabsorption syndromes (jejunal bacterial
overgrowth, enteritis, intestinal parasites)
- lack of intrinsic factor ? pernicious anemia
adults: genetic, autoantibodies against
parietal cells or IF? chronic
atrophic gastritis
children: rare, inherited, abnormalities of IF