Literature DB >> 12110453

Changes in the septohippocampal cholinergic system following removal of molar teeth in the aged SAMP8 mouse.

Minoru Onozuka1, Kazuko Watanabe, Masafumi Fujita, Mihoko Tomida, Satoru Ozono.   

Abstract

We investigated the effect of dysfunctional teeth on age-related changes in the septohippocampal cholinergic system by assessing acetylcholine (ACh) release and choline acetyltransferase (ChAT) activity in the hippocampus and ChAT immunohistochemistry in the medial septal nucleus and the vertical limb of the diagonal band in young-adult and aged SAMP8 mice after removal of their upper molar teeth (molarless condition). Aged molarless mice showed decreased ACh release and ChAT activity in the hippocampus and a reduced number of ChAT-immunopositive neurons in the medial septal nucleus compared to age-matched control mice, whereas these effects were not seen in young-adult mice. The results suggest that the molarless condition in aged SAMP8 mice may enhance an age-related decline in the septohippocampal cholinergic system.

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Year:  2002        PMID： 12110453     DOI： 10.1016/s0166-4328(02)00006-2

Source DB:  PubMed          Journal:  Behav Brain Res        ISSN： 0166-4328            Impact factor:   3.332


  15 in total

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