Sustained plateau activity precedes and can generate ictal-like discharges in low-Cl- medium in slices from rat piriform cortex

Journal of Neuroscience

Volumn 19, Issue 24, 1999, Pages 10738-10746

  Demir, Rezan ^a   Haberly, Lewis B ^a   Jackson, Meyer B ^a  

^a UNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE AND PUBLIC HEALTH   (United States)

Author keywords

Epilepsy; Epileptiform activity; Glutamate receptors; Ictal activity; Piriform cortex; Voltage imaging

Indexed keywords

BICUCULLINE METHIODIDE; CHLORIDE ION; GLUTAMATE RECEPTOR; KYNURENIC ACID;

ANIMAL TISSUE; ARTICLE; BRAIN SLICE; EPILEPSY; EPILEPTOGENESIS; HISTOLOGY; NONHUMAN; PRIORITY JOURNAL; PYRIFORM CORTEX; RAT; SEIZURE; SEIZURE THRESHOLD; SYNAPTIC TRANSMISSION;

EID: 0033573449     PISSN: 02706474     EISSN: None     Source Type: Journal    
DOI: 10.1523/jneurosci.19-24-10738.1999     Document Type: Article

References (36)

1. Ayala GF, Matsumoto H, Gumnit RJ (1970) Excitability changes and inhibitory mechanisms in neocortical neurons during seizures. J Neurophysiol 33:73-85.
2. Chamberlin NL, Dingledine R (1988) GABAergic inhibition and the induction of spontaneous epileptiform activity by low chloride and high potassium in the hippocampal slice. Brain Res 445:12-18.
3. Chien C-B, Pine J (1991) Voltage-sensitive dye recording of action potentials and synaptic potentials from sympathetic microcultures. Biophys 160:697-711.
4. Demir R, Haberly LB, Jackson MB (1998) Voltage imaging of epileptiform activity in slices from rat piriform cortex: onset and propagation. J Neurophysiol 80:2727-2742.
5. Demir R, Haberly LB, Jackson MB (1999) Sustained and accelerating activity at two discrete sites generate epileptiform discharges in slices of piriform cortex. J Neurosci 19:1294-1306.
6. Demir R, Haberly LB, Jackson MB (2000) Characteristics of plateau activity during the latent period prior to epileptiform discharges in slices from rat piriform cortex. J Neurophysiol, in press.
7. Dichter MA, Ayala GF (1987) Cellular mechanisms of epilepsy: a status report. Science 237:157-164.
8. Dudek FE, Snow RW, Taylor CP (1986) Role of electrical interactions in synchronization of epileptiform bursts. In: Basic mechanisms of epilepsies (Delgado-Escueta AV, Ward Jr AA, Woodbury DM, Porter RJ, eds), pp 593-617. New York: Raven.
9. Engel Jr J, Ackermann RF (1980) Interictal EEG spikes correlate with decreased, rather than increased, epileptogenicity in amygdaloid kindled rats. Brain Res 190:543-548.
10. Engel Jr J, Rausch R, Lieb JP, Kuhl DE, Crandall PH (1981) Correlation of criteria used for localizing epileptic foci in patients considered for surgical therapy of epilepsy. Ann Neurol 9:215-224.
11. Fisher RS (1989) Animal models of epilepsies. Brain Res Rev 14:245-278.
12. Gotman J (1984) Relationships between triggered seizures, spontaneous seizures, and interictal spiking in the kindling model of epilepsy. Exp Neurol 84:259-273.
13. Hoffman WH, Haberly LB (1989) Bursting induces persistent all-or-none EPSPs by an NMDA-dependent process in piriform cortex. J Neurosci 9:206-215.
14. Hoffman WH, Haberly LB (1991) Bursting-induced epileptiform EPSPs in slices of piriform cortex are generated by deep cells. J Neurosci 11:2021-2031.
15. Hoffman WH, Haberly LB (1993) Role of synaptic excitation in the generation of bursting-induced epileptiform potentials in the endopiriform nucleus and piriform cortex. J Neurophysiol 70:2550-2561.
16. Hoffman WH, Haberly LB (1996) Kindling-induced epileptiform potentials in piriform cortex slices originate in the underlying endopiriform nucleus. J Neurophysiol 76:1430-1438.
17. Jackson MB, Scharfman HE (1996) Positive feedback from hilar mossy cells to granule cells in the dentate gyrus revealed by voltage-sensitive dye and microelectrode recording. J Neurophysiol 76:601-616.
18. Jefferys JGR (1995) Nonsynaptic modulation of neuronal activity in the brain: electric currents and extracellular ions. Physiol Rev 75:689-723.
19. Jensen MS, Yaari Y (1988) The relationship between interictal and ictal paroxysms in an in vitro model of focal hippocampal epilepsy. Ann Neurol 24:591-598.
20. Konnerth A, Heinemann U, Yaari Y (1986) Nonsynaptic epileptogenesis in the mammalian hippocampus in vitro. I. Development of seizure-like activity in low extracellular calcium. J Neurophysiol 56:409-423.
21. Madison DV, Malenka RC, Nicoll RA (1986) Phorbol esters block a voltage-sensitive chloride current in hippocampal pyramidal cells. Nature 321:695-697.
22. Owen DG, Segal M, Barker JL (1986) Voltage-clamp analysis of a Ca- and voltage-dependent chloride conductance in cultured mouse spinal neurons. J Neurophysiol 55:1115-1135.
23. Prince DA, Connors BW (1986) Mechanisms of interictal epileptogenesis. In: Basic mechanisms of the epilepsies (Delgado-Escueta AV, Ward Jr AA, Woodbury DM, Porter RJ, eds), pp 275-299. New York: Raven.
24. Prince DA, Connors BW, Benardo LS (1983) Mechanisms underlying interictal-ictal transitions. In: Advances in neurology: status epilepticus (Delgado-Escueta AV, Wasterlain CG, Treimen DM, Porter RJ, eds), pp 177-187. New York: Raven.
25. Rasmussen PA, Yang Y, Rutecki PA (1996) Propofol inhibits epileptiform activity in rat hippocampal slices. Epilepsy Res 25:169-175.
26. Rutecki PA, Yang Y (1998) Ictal epileptiform activity in the CA3 region of hippocampal slices produced by pilocarpine. J Neurophysiol 79:3019-3029.
27. Schweitzer JS, Patrylo PR, Dudek FE (1992) Prolonged field bursts in the dentate gyrus: dependence on low calcium, high potassium, and nonsynaptic mechanisms. J Neurophysiol 68:2016-2025.
28. Sherwin I (1978) Interictal-ictal transition in the feline penicillin epileptogenic focus. Electroencephalogr Clin Neurophysiol 45:525-534.
29. Stasheff SF, Anderson WW, Clark S, Wilson WA (1989) NMDA antagonists differentiate epileptogenesis from seizure expression in an in vitro model. Science 245:648-651.
30. Taylor CP, Dudek FE (1982) Synchronous neural afterdischarges in rat hippocampal slices without active chemical synapses. Science 218:810-812.
31. Traub RD, Dudek FE, Taylor CP, Knowles WD (1985) Simulation of hippocampal afterdischarges synchronized by electrical interactions. Neuroscience 14:1033-1038.
32. Traub RD, Borck C, Colling SB, Jefferys GR (1996) On the structure of ictal events in vitro. Epilepsia 37:879-891.
33. Traynelis SF, Dingledine R (1989) Modification of potassium-induced interictal bursts and electrographic seizures by divalent cations. Neurosci Lett 98:194-199.
34. Tseng GF, Haberly LB (1989) Deep neurons in piriform cortex. I. Morphology and synaptically evoked responses including a unique high-amplitude paired shock facilitation. J Neurophysiol 62:369-385.
35. Wu JY, Cohen LB (1993) Fast multisite optical measurements of membrane potential. In: Fluorescent and luminescent probes for biological activity (Mason WT, ed), pp 389-404. London: Academic.
36. Yaari Y, Konnerth A, Heinemann U (1986) Nonsynaptic epileptogenesis in the mammalian hippocampus in vitro. II. Role of extracellular potassium. J Neurophysiol 56:424-438.