Influence of beta-amyloid protein and cholesterol on the pathological changes of Alzheimer's disease and expression of nicotinic acetylcholine receptors in rats / 中华病理学杂志
Chinese Journal of Pathology
; (12): 184-189, 2007.
Article
em Zh
| WPRIM
| ID: wpr-333935
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To study the influence of beta-amyloid protein (Abeta) and cholesterol on the pathological changes of Alzheimer's disease (AD) and on the expression of nicotinic acetylcholine receptor (nAChR) subunits in the brains of rats.</p><p><b>METHOD</b>The rats were treated by intracerebroventricular injection of Abeta1-42 and fed with a diet containing 5% cholesterol to establish animal model of AD. The pathological changes, learning and memory, and expression of nAChRs of rats were analyzed by Bieoschowsky staining, immunohistochemistry, water-labyrinth, Western blot, and RT-PCR.</p><p><b>RESULTS</b>Abeta intracerebroventricular injection induced Abeta deposition in rat brains and high-cholesterol diet resulted in hypercholesterolemia in the animals. Injection of Abeta caused a reduction of learning and memory of rats and modifications of the expression of nAChRs. Cholesterol enhanced these effects of Abeta on neuropathology and expression of nAChRs.</p><p><b>CONCLUSIONS</b>Abeta can induce marked neuropathological changes, influence the learning and study ability, and modify the expression of nAChRs. Cholesterol can enhance the neurotoxicity of Abeta.</p>
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Índice:
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Assunto principal:
Patologia
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Fragmentos de Peptídeos
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Sangue
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RNA Mensageiro
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Distribuição Aleatória
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Córtex Cerebral
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Colesterol
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Peptídeos beta-Amiloides
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Receptores Nicotínicos
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Ratos Wistar
Limite:
Animals
Idioma:
Zh
Revista:
Chinese Journal of Pathology
Ano de publicação:
2007
Tipo de documento:
Article