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Spinal effects of the calmodulin inhibitor calmidazolium on dorsal horn neurons in the rat

100%

Menendez L., Baamonde A., Hidalgo A.

Acta Neurobiologiae Experimentalis

1999

tom 59

nr 1

Effects of DAGO on the rodent hippocampal evoked potentials using different perfusion solutions

88%

SanMartin S., Menendez L., Gutierrez M., Hidalgo A., Baamonde A.

Acta Neurobiologiae Experimentalis

2000

tom 60

nr 2

Opioid receptor agonists exert excitatory effects in the hippocampus by inhibiting GABA release. We report that the |Li-opioid agonist, DAGO, increases the amplitude of the population spikes (PS) measured in the stratum pyramidale of the CA1 cell layer in mouse and rat hippocampal slices perfused with an artificial cerebrospinal fluid (ACSF), but not when perfused in Krebs solution. The GABAa agonist, 3-APS, induces inhibitory responses when perfused in either ACSF or Krebs. Also, the field excitatory postsynaptic potentials (EPSP) measured on stratum radiatum do not differ when the slice is perfused with either ACSF or Krebs. The increase in the amplitude of the PS induced by DAGO is not obtained when perfused in a modified ACSF whose concentration of MgS04 was lowered to its concentration in the Krebs solution (from 2.4 mM to 1.2 mM). Thus, changes in the concentration of MgS04 seem to be responsible for the different responses induced by DAGO.

Ograniczanie wyników

2 Acta Neurobiologiae Experimentalis

2 Baamonde A.

2 Hidalgo A.

2 Menendez L.

1 Gutierrez M.

1 SanMartin S.

1 2000

1 1999

Wyniki wyszukiwania

Spinal effects of the calmodulin inhibitor calmidazolium on dorsal horn neurons in the rat

Effects of DAGO on the rodent hippocampal evoked potentials using different perfusion solutions