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Small-conductance, Ca2+-activated K+ channel SK3 generates age-related memory and LTP deficits

Abstract

Cognitive deficits are among the most devastating changes associated with the aging process. Age-related decrement in performance on learning tasks1,2 is correlated with substantial changes in neuronal signal processing in the hippocampus3,4,5. Here we show that elevated expression of small-conductance Ca2+-activated K+ channels (SK channels) of the SK3 type in hippocampi of aged mice contributes to reduced long-term potentiation (LTP) and impaired trace fear conditioning, a hippocampus-dependent learning task6,7.

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Figure 1: Antisense-SK3 treatment reduced the elevated expression of hippocampal SK3 channels in aged mice.
Figure 2: Downregulation of SK3 reversed the age-related impairment of trace fear conditioning, PS-LTP and fEPSP-LTP.

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References

  1. Houston, F.P., Stevenson, G.D., McNaughton, B.L. & Barnes, C.A. Learn. Mem. 6, 111–119 (1999).

    CAS  PubMed  PubMed Central  Google Scholar 

  2. Barnes, C.A., Nadel, L. & Honig, W.K. Can. J. Psychol. 34, 29–39 (1980).

    Article  CAS  Google Scholar 

  3. Landfield, P.W., McGaugh, J.L. & Lynch, G. Brain Res. 150, 85–101 (1978).

    Article  CAS  Google Scholar 

  4. Landfield, P.W. & Pitler, T.A. Science 226, 1089–1092 (1984).

    Article  CAS  Google Scholar 

  5. Wu, W.W., Oh, M.M. & Disterhoft, J.F. Ageing Res. Rev. 1, 181–207 (2002).

    Article  CAS  Google Scholar 

  6. McEchron, M.D., Bouwmeester, H., Tseng, W., Weiss, C. & Disterhoft, J.F. Hippocampus 8, 638–646 (1998).

    Article  CAS  Google Scholar 

  7. Wallenstein, G.V., Eichenbaum, H. & Hasselmo, M.E. Trends Neurosci. 21, 317–323 (1998).

    Article  CAS  Google Scholar 

  8. Storm, J.F. Prog. Brain Res. 83, 161–187 (1990).

    Article  CAS  Google Scholar 

  9. Sah, P. Trends Neurosci. 19, 150–154 (1996).

    Article  CAS  Google Scholar 

  10. Pedarzani, P. et al. J. Biol. Chem. 276, 9762–9769 (2001).

    Article  CAS  Google Scholar 

  11. Schumacher, M. & Adelman, J.P. Nature 417, 501–502 (2002).

    Article  CAS  Google Scholar 

  12. Tacconi, S. et al. Neuroscience 102, 209–215 (2001).

    Article  CAS  Google Scholar 

  13. Moore, C.I., Browning, M.D. & Rose, G.M. Hippocampus 3, 57–66 (1993).

    Article  CAS  Google Scholar 

  14. Lanahan, A., Lyford, G., Stevenson, G.S., Worley, P.F. & Barnes, C.A. J. Neurosci. 17, 2876–2885 (1997).

    Article  CAS  Google Scholar 

  15. Blank, T., Nijholt, I., Eckart, K. & Spiess, J. J. Neurosci. 22, 3788–3794 (2002).

    Article  CAS  Google Scholar 

Download references

Acknowledgements

This work was supported by the Max Planck Society. We thank Dr. John Disterhoft for fruitful discussions and his generous support in obtaining the animals for this study.

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Correspondence to Thomas Blank.

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Blank, T., Nijholt, I., Kye, MJ. et al. Small-conductance, Ca2+-activated K+ channel SK3 generates age-related memory and LTP deficits. Nat Neurosci 6, 911–912 (2003). https://doi.org/10.1038/nn1101

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