Abstract:
:On the basis of abnormal neuropsychological behavior in the open-field test after 2-week zinc deprivation, neurochemical response was examined in young mice fed a zinc-deficient diet for 2 weeks. Serum corticosterone concentration was markedly higher in zinc-deficient mice than in the control mice. Basal signals of intracellular calcium (fluo-4 FF) were also significantly more in hippocampal slices from zinc-deficient mice. These results suggest that basal Ca2+ levels in hippocampal cells are increased by zinc deficiency. On the other hand, Schaffer collateral long-term potentiation (LTP) was unaffected by zinc deficiency; the averaged fEPSP after tetanic stimulation was 162+/-8% of baseline value in the control and 172+/-22% in zinc-deficient mice. In the Morris water maze, there was also no significant difference in learning behavior for the hidden platform task between the control and zinc-deficient mice. The present study indicates that Schaffer collateral LTP associated with spatial cognition performance are unaffected by calcium dyshomeostasis in the hippocampus elicited by 2-week zinc deprivation, which may be linked to the increased serum corticosterone concentration.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
Takeda A,Yamada K,Tamano H,Fuke S,Kawamura M,Oku Ndoi
10.1016/j.neuint.2007.06.021subject
Has Abstractpub_date
2008-01-01 00:00:00pages
241-6issue
1-2eissn
0197-0186issn
1872-9754pii
S0197-0186(07)00161-1journal_volume
52pub_type
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journal_title:Neurochemistry international
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journal_title:Neurochemistry international
pub_type: 杂志文章
doi:10.1016/j.neuint.2008.04.001
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