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The effect of coriaria lactone on NMDA receptor mediated currents in rat hippocampal CA1 neurons

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Summary

To investigate the exact mechanism of epileptogenesis induced by coriaria lactone (CL), the effect of CL on NMDA receptor mediated current (IAsp) in rat hippocampal CA1 neurons was investigated by using nystatin perforated whole-cell patch clamp. 10−6–10−4 mol/L Asp acted on NMDA receptors and elicited an inward current (IAsp) at a holding potential (VH) of -40 mV in presence of 10−6 mol/L glycine and absence of Mg2+ extracellularly. CL enhanced NMDA receptor mediated current induced by Asp, but had no effect on threshold concentration, EC50, Hill coefficient as well as maximal-effect concentration and reversal potential of IAsp. The effect had no relationship with holding potential. These results showed that CL could enhance NMDA receptor mediated current to increase [Ca2+]i of neurons by acting on Gly site, thereby inducing epilepsy.

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Authors and Affiliations

  1. Department of Anatomy, The Fourth Military Medical University, 710032, Xi’an

    Pang Zhiping (Lecturer), Wang Dianshi & Li Jishuo

  2. Department of Anatomy, School of Basic Medical Sciences, Tongji Medical University, 430030, Wuhan

    Hao Jiandong & Zhu Changgeng

  3. Department of Anatomy, Research Center of Experimental Medicine, Tongji Medical University, 430030, Wuhan

    Wang Ajing

Authors
  1. Pang Zhiping
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  2. Wang Dianshi
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  3. Hao Jiandong
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  4. Zhu Changgeng
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  5. Wang Ajing
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  6. Li Jishuo
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Additional information

This project was supported by a grant from the National Natural Science Foundation of China (No. 39330210).

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Zhiping, P., Dianshi, W., Jiandong, H. et al. The effect of coriaria lactone on NMDA receptor mediated currents in rat hippocampal CA1 neurons. Current Medical Science 20, 6–9 (2000). https://doi.org/10.1007/BF02887662

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  • DOI: https://doi.org/10.1007/BF02887662

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