Absorption of food vitamin B 12 thus requires an intact and functioning stomach, exocrine pancreas, intrinsic factor, and small bowel.
42.
Mutations in the GIF gene are responsible for a rare inheritable disease called intrinsic factor deficiency which results in malabsorption of vitamin B 12.
43.
In the small bowel, a molecule named intrinsic factor ( IF ), allows vitamin B 12 to be absorbed in the ileum.
44.
Intrinsic factors include the diameter of the erupting vent, the gas content of the magma, and the velocity at which it is ejected.
45.
Pernicious anemia results from an autoimmune disorder which destroys the cells that produce intrinsic factor within the stomach lining, thereby hindering B 12 absorption.
46.
The parietal cells in the fundus of the stomach, produce a glycoprotein called intrinsic factor which is essential for the absorption of vitamin B12.
47.
They researched intrinsic factor, which is lacking from the gastric juices when one has the condition of pernicious anemia and cannot absorb vitamin B12.
48.
In the duodenum, the free vitamin B 12 attaches to the intrinsic factor ( IF ) to create a vitamin B 12-IF complex.
49.
As Crohn's disease most commonly affects the terminal ileum where the vitamin B12 / intrinsic factor complex is absorbed, B12 deficiency may be seen.
50.
High rates of deficiency in the elderly commonly results from the decrease of functional absorption of B 12, as production of intrinsic factor declines with age.
