PubMed · 40834
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A J Sbarra, R J Selvaraj, B B Paul, G W Mitchell, F J Louis. 1979. Myeloperoxidase and leukocyte function.. https://pubmed.ncbi.nlm.nih.gov/40834/
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The administration of vitamin E (alpha-tocopherol) was found to improve polymorphonuclear leukocyte function in an infant with congenital deficiency of glutathione synthetase activity. Before therapy with vitamin E the abnormal leukocytes exposed to phagocytic challenge showed oxidant damage. They released 60 per cent more hydrogen peroxide than did normal leukocytes, iodinated only 20 to 25 per cent of the normal number of particles, and were unable to kill bacteria as effectively as normal leukocytes although the rates of phagocytosis were normal. These functional abnormalities disappeared when the patient was placed on 400 IU of alpha-tocopherol daily for three months. Associated with the functional improvement was a normalization of microtubule assembly during phagocytic challenge.
Granulocytes from a boy with congenital transcobalamin II (TC II) deficiency were found to have abnormally low antibacterial activity against Staphylococcus aureus. Transfusion of normal plasma supplemented with hydroxocobalamin temporarily restored granulocyte bactericidal activity to normal. Granulocyte function was also temporarily restored by oral leucovorin. The defect appears to be causally related to the patient's TC II deficiency and indirectly to an intracellular deficiency of cobalamin and folate coenzymes [1].
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