Difference in toxicity of β-amyloid peptide with aging in relation to nerve growth factor content in rat brain

T. Fukuta, A. Nitta, A. Itoh, S. Furukawa, T. Nabeshima

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Amyloid β-peptide (Aα) is the major constituent of the senile plaques in the brains of patients with Alzheimer's disease. We have demonstrated previously that memory impairment, dysfunction of the cholinergic and dopaminergic neuronal system and morphological degeneration are produced after the continuous infusion of Aα into the cerebral ventricle in 8-week-old rat. In the present study, we investigated the toxicity of Aβ in infant (10 days old), adult (8 weeks old) and aged (20 months old) rats in relation to nerve growth factor (NGF) content in various regions of the brain. After a 2-week-infusion, choline acetyltransferase (ChAT) activity was significantly decreased in the hippocampus of adult, but not infant or aged rats. NGF levels in the hippocampus were increased only in adult rats. These results suggest that Aβ is toxic only in the matured adult brain, and that the mechanism of toxicity is related to NGF synthesis.

本文言語English
ページ(範囲)221-230
ページ数10
ジャーナルJournal of Neural Transmission
108
2
DOI
出版ステータスPublished - 11-08-2001

All Science Journal Classification (ASJC) codes

  • 神経学
  • 臨床神経学
  • 精神医学および精神衛生
  • 生物学的精神医学

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