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The effect of low protein diet on thalamic projections of hippocampus in rat

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Author(s): Bayat M | Hasanzadeh GR | Barzroodipour M | Javadi M

Journal: Neuroanatomy
ISSN 1303-1783

Volume: 4;
Issue: 1;
Start page: 43;
Date: 2005;
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Keywords: thalamus | CA1 | hippocampal area | protein malnutrition | efferent projection

ABSTRACT
Recent investigations show that protein malnutrition alters the structure and function of some areas of the hippocampal formation. We investigated therefore the effect of protein malnutrition on thalamic projections to the CA1 hippocampal area. In this study, the efferent projections from the thalamus to hippocampus in rat by horseradish peroxidase (HRP) neural tract tracing was investigated in two groups. The control group was fed with regular diet (18% protein) whereas the study group was fed with low protein diet (8% protein). In the control group we found that the whole anterior thalamic nuclei and nucleus reuniens send projections to the CA1 hippocampal region. Among these nuclei, the anteroventral nucleus (AV) had the highest amount of labelled neurons which sent projection to the CA1 hippocampal region. Anterior thalamus projected to both hippocampus. Number of HRP labelled neurons in the contralateral thalamus were less than the ipsilateral thalamus. As a result of the influence of low protein diet, efferent projection from the anterior thalamus and nucleus reuniens to the CA1 region of hippocampus had decreased (p
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