Effect of folate and vitamin B_(12) on tau phosphorylation in hippocampus of elderly rats / 中华神经科杂志

ABSTRACT

Objective To investigate the relationship of folates,vitamin B_(12) with tan phosphorylation and the possible mechanism in Alzhcimer's disease (AD).Method Tau protein phosphorylation was examined in hippocampns of rats of two months old and forty months old treated or untreated by folates and vitamin B_(12) using Western blot and immunohistochemistry with phosphorylation dependent and independent tau antibodies.Results We found that tau phosphorylation in aged rat brain showed a significant higher level than that in the two-month olds.Folates combined with vitamin.B_(12) could decrease tau phosphorylation by 27% at the site of Ser396/404 of hippoeampus in aged rats.Conclusion It suggests folates and vitamin B_(12) may play an important role in preventing the neurodegenerative change via effeeting tau phosphorylation in AD brain.