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Abstract Title:

Nobiletin, a citrus flavonoid, improves cognitive impairment and reduces soluble Aβ levels in a triple transgenic mouse model of Alzheimer's disease (3XTg-AD).

Abstract Source:

Behav Brain Res. 2015 Aug 1 ;289:69-77. Epub 2015 Apr 22. PMID: 25913833

Abstract Author(s):

Akira Nakajima, Yuki Aoyama, Eun-Joo Shin, Yunsung Nam, Hyoung-Chun Kim, Taku Nagai, Akihito Yokosuka, Yoshihiro Mimaki, Tsuyoshi Yokoi, Yasushi Ohizumi, Kiyofumi Yamada

Article Affiliation:

Akira Nakajima

Abstract:

Alzheimer's disease (AD), the most common form of dementia among the elderly, is characterized by the progressive decline of cognitive function. Increasing evidence indicates that the production and accumulation of amyloidβ (Aβ), particularly soluble Aβ oligomers, is central to the pathogenesis of AD. Our recent studies have demonstrated that nobiletin, a polymethoxylated flavone from citrus peels, ameliorates learning and memory impairment in olfactory-bulbectomized mice, amyloid precursor protein transgenic mice, NMDA receptor antagonist-treated mice, and senescence-accelerated mouse prone 8. Here, we present evidence that this natural compound improves cognitive impairment and reduces soluble Aβ levels in a triple transgenic mouse model of AD (3XTg-AD) that progressively develops amyloid plaques, neurofibrillary tangles, and cognitive impairments. Treatment with nobiletin (30mg/kg) for 3 months reversed the impairment of short-term memory and recognition memory in 3XTg-AD mice. Our ELISA analysis also showed that nobiletin reduced the levels of soluble Aβ1-40 in the brain of 3XTg-AD mice. Furthermore, nobiletin reduced ROS levels in the hippocampus of 3XTg-AD as well as wild-type mice. These results suggest that this natural compound has potential to become a novel drug for the treatment and prevention of AD.

Study Type : Animal Study, Transgenic Animal Study

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Sayer Ji
Founder of GreenMedInfo.com

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