口服硫黄素T预防双转基因小鼠Beta淀粉样斑块形成

Title:Oral Administration of Thioflavin T Prevents Beta Amyloid Plaque Formation in Double Transgenic AD Mice

Volume: 12 Issue: 9

Author(s): Sumit Sarkar, James Raymick, Balmiki Ray, Debomoy K. Lahiri, Merle G. Paule and Larry Schmued

Affiliation:

关键词: AD，Amylo-Glo，星形胶质细胞，CD68，GFAP，小胶质细胞，神经保护作用，硫黄素T。

摘要: Alzheimer’s disease (AD) is a progressive neurodegenerative disorder and the fourth leading cause of death in the United States and most common cause of adult-onset dementia. The major hallmarks of AD are the formation of senile amyloid plaques made of beta amyloid and neurofibrillary tangles (NFT) which are primarily composed of phosphorylated tau protein. Although numerous agents have been considered as providing protection against AD, identification of potential agents with neuroprotective ability is limited. Thioflavin T has been used in the past to stain amyloid beta plaques in brain. In this study, Thioflavin T (ThT) and vehicle (infant formula) were administered orally by gavage to transgenic (B6C3 APP PS1; AD-Tg) mice beginning at 4 months age and continuing until sacrifice at 9 months of age at 40mg/kg dose. The number of amyloid plaques was reduced dramatically by ThT treatment in both male and female transgenic mice compared to those in control mice. Additionally, GFAP and Amylo-Glo labeling suggest that astrocytic hypertrophy is minimized in ThT-treated animals. Similarly, CD68 labeling, which detects activated microglia, along with Amylo-Glo labeling, suggests that microglial activation is significantly less in ThT-treated mice. Both Aβ-40 and Aβ-42 concentrations in blood rose significantly in the ThT-treated animals suggesting that ThT may inhibit the deposition, degradation, and/or clearance of Aβ plaques in brain.

Cite this article as:

Sumit Sarkar, James Raymick, Balmiki Ray, Debomoy K. Lahiri, Merle G. Paule and Larry Schmued , Oral Administration of Thioflavin T Prevents Beta Amyloid Plaque Formation in Double Transgenic AD Mice, Current Alzheimer Research 2015; 12 (9) . https://dx.doi.org/10.2174/156720501209151019105647