Neurochemical hypothesis: participation by aluminum in producing critical
mass of colocalized errors in brain leads to neurological disease.
Joshi JG.
Department of Biochemistry, University of Tennessee, Knoxville 37996-0840.
1. Aluminum is an established neurotoxin. Prolonged exposure to even low
levels of aluminum permit its chelation and subsequent transport to brain
where it is non-uniformly distributed. 2. Available evidence suggests that
(i) aluminum interferes with glucose metabolism by inhibiting hexokinase and
glucose-6-phosphate dehydrogenase; (ii) it binds to calmodulin and affects
numerous phosphorylation-dephosphorylation reactions; (iii) it binds to
transferrin and ferritin, affects the function of these proteins which in
turn affect iron metabolism. 3. Thus accumulation of aluminum-induced
metabolic errors colocalized in specific areas of the brain may lead to
neurological disorders.