Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:1.14.16.2 (tyrosine hydroxylase)
14,760 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

alpha-Tocopherol concentrations in brain were reduced to 3% of control levels in rats fed a vitamin E deficient diet for 52 weeks. Vitamin E deficiency resulted in a 19-33% loss of tyrosine hydroxylase (TH) immunopositive neurones in the substantia nigra, but not in the adjacent ventral tegmental area, compared with controls. Vitamin E deficiency, however, did not reduce striatal dopamine concentrations or turnover. When antioxidant defence mechanisms are defective, as in chronic vitamin E deficiency, the nigrostriatal pathway may be affected by oxidative damage and this may have implications for Parkinson's disease.
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PMID:Nigral dopaminergic cell loss in vitamin E deficient rats. 782 29