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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Kainic acid-induced excitotoxic hippocampal neurodegeneration in C57BL/6 mice: B cell and T cell subsets may contribute differently to the pathogenesis.

The roles of T cells and B cells in kainic acid (KA)-induced hippocampal lesions were studied in C57BL/6 mice lacking specific T cell populations (CD4, CD8, and CD4/CD8 cells) and B cells [Igh-6(-/-)]. At 48 mg/kg of KA administrated intranasally, KA-induced convulsions were seen in all groups. However, CD4/CD8(-/-) mice exhibited the mildest seizures; the responses of CD8(-/-), Igh-6(-/-) and wild-type mice were intermediate, whereas CD4(-/-) mice displayed much more severe clinical signs and 100% early mortality, indicating that a deficiency of CD4 T cells obviously increased susceptibility to KA-induced brain damage. Histopathological analysis of the mice that survived 7 days after KA administration revealed that CD4/CD8(-/-) mice had the fewest pathologic changes but Igh-6(-/-) mice showed more severe lesions in area CA3 of the hippocampus than CD8(-/-) and wild-type mice. Reactive astrogliosis were prominent in all KA-treated mice. Locomotor activity as assessed by open-field test increased after KA administration in Igh-6(-/-) and wild-type mice only. These results denote the influence of the adaptive immune response on KA-induced hippocampal neurodegeneration and suggest that B cell and T cell subsets may contribute differently to the pathogenesis.[1]

References

  1. Kainic acid-induced excitotoxic hippocampal neurodegeneration in C57BL/6 mice: B cell and T cell subsets may contribute differently to the pathogenesis. Chen, Z., Yu, S., Concha, H.Q., Zhu, Y., Mix, E., Winblad, B., Ljunggren, H.G., Zhu, J. Brain Behav. Immun. (2004) [Pubmed]
 
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