The effects of corticotropin-releasing factor on anoxia-induced changes in evoked potentials in living slices of rat olfactory cortex

被引:1
作者
Lyubimov Ya.E. [1 ]
Emel'yanov N.A. [1 ]
Izvarina N.L. [1 ]
机构
[1] Lab. Regul. of Brain Neuron Function, I. P. Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 St. Petersburg
关键词
Anoxia; Brain slices; CRF; EPSP; Olfactory cortex;
D O I
10.1023/B:NEAB.0000028284.55405.8f
中图分类号
学科分类号
摘要
Experiments were performed to address the dynamics of evoked focal potentials in slices of rat olfactory cortex during 10-min anoxia and subsequent reoxygenation. These experiments showed that perfusion with corticotropin-releasing factor (CRF) - corticoliberin - at concentrations of 1, 10, and 100 nM had no effect on changes in EPSP parameters before or during anoxia. However, CRF (10 and 100 nM) significantly aided recovery of the amplitude and slope of EPSP during reoxygenation. Application of the competitive NMDA receptor blocker APV (50 μM) during reoxygenation did not eliminate the protective effects of CRF on neuronal activity. © 2004 Plenum Publishing Corporation.
引用
收藏
页码:557 / 561
页数:4
相关论文
共 25 条
[1]  
Lyubimov Ya.E., Izvarina N.L., Emel'yanov N.A., Chikhman V.N., Solnushkin S.D., The effects ofdifferent concentrations of corticotropin-releasing factor on the long-term potentiation in olfactory cortex slices from rat brain, Ros. Fiziol. Zh. Im. I. M. Sechenova, 87, 4, pp. 543-548, (2001)
[2]  
Aldenhoff J.B., Gruol D.L., Rivier J., Vale W., Siggins G.R., Corticotropin-releasing factor decreases post-burst hyperpolorisations and excites hippocampal neurons, Science, 221, 4613, pp. 875-877, (1983)
[3]  
Chalmers D.T., Lovenberg T.W., De Souza E.V., Localization of novel corticotrophin-releasing factor receptor (CRF-2) mRNA expression to specific subcortical nuclei in rat brain: Comparison with CRF 1 receptor mRNA expression, J. Neurosci., 15, 10, pp. 6340-6350, (1995)
[4]  
Chen F.M., Bilezikjan L.M., Perrin M.N., Rivier J., Vale W., Corticotropin-releasing factor receptor-mediated stimulation of adenylyl cyclase activity in the rat brain, Brain Res., 381, 1, pp. 49-57, (1986)
[5]  
Choi D., Park S., Kim H.S., Seo M., Kim S., Kim J., Won M.H., Kang T., Expression of corticotropin releasing factor, but not its binding protein, in CA1 pyramidal cells of gerbil hippocampus following transient ischemia, Brain Res., 899, 1-2, pp. 255-259, (2001)
[6]  
Chou J.C., Lee E.H., Differential involvement of hippocampal G-protein subtypes in the memory process of rats, Neurosci., 64, 1, pp. 5-15, (1995)
[7]  
Dunn A.J., Berridge C.W., Physiological and behavioral responses to corticotropin-releasing factor administration: Is CRF a mediator of anxiety or stress responses?, Brain Res. Rev., 15, 1, pp. 71-100, (1990)
[8]  
Eckart K., Radulovic J., Radulovic M., Jahn O., Blank T., Stiedl O., Spiess J., Actions of CRF and its analogs, Curr. Med. Chem., 6, 11, pp. 1035-1053, (1999)
[9]  
McFerran B.W., Guild S.B., The roles of adenosine 3′,5′-cyclic monophosphate-dependent protein kinase A and protein kinase C in stimulus-secretion coupling in AtT-20 cells, J. Mol. Endocrinol., 16, 2, pp. 133-140, (1996)
[10]  
Fox M.W., Anderson R.E., Meyer F.B., Neuroprotection by corticotropin releasing factor during hypoxia in rat brain, Stroke, 24, 7, pp. 1072-1075, (1993)