Abstract:
:Age-related and aged memory deficit changes in Nestin-immunoreactive (Nestin-IR) neurons were studied following recent evidence of distinct Nestin-IR neurons within adult rat basal forebrain. Morris water maze task assessed spatial learning capacity of 3- and 24-month rats (aged-impaired and aged-unimpaired groups). Nestin-IR neuron distributional and morphological features were investigated by immunohistochemistry and positive neuronal number calculation. Nestin-IR neuron number declined with aging, especially aged-impaired. Significant negative correlations existed between average escape latencies and Nestin-IR neuron number in medial septum-diagonal band of Broca (MS-DBB). Correlations of rostral portion [medial septum (MS) and vertical limb diagonal band (vDB)] were higher than caudal portion [horizontal limb diagonal band (hDB)]. Aged-impaired showed reduced complexity of Nestin-IR neuron dendrite arborization and dendritic length. Nestin-IR astrocyte-like cells appeared scattered among Nestin-IR neurons on some aged-impaired slices. In conclusion, aged-impaired rats showed worse cognitive spatial performance and less Nestin-IR neuronal number compared to aged-unimpaired. Nestin-IR neuronal loss and morphological changes are some pathological characteristics of rat aged basal forebrain and may be important in neurobiological mechanisms of brain aging and aged memory deficit.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
Li D,Wang J,Yew DT,Lucy Forster E,Yao Zdoi
10.1016/j.neuint.2008.08.006subject
Has Abstractpub_date
2008-12-01 00:00:00pages
270-7issue
6-8eissn
0197-0186issn
1872-9754pii
S0197-0186(08)00129-0journal_volume
53pub_type
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
pub_type: 杂志文章
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
pub_type: 杂志文章
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