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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)
DOI: https://doi.org/10.15407/fz

Fiziologichnyi Zhurnal

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2010; 56(4): 14-18


The effect of neuraminidase blocker on gabazine-induced seizures in rat hippocampus

Savrasova AV, Lushnikova IV, Isaeva EV, Skibo GG, Isaev DS, Kostyuk PG

    O.O.Bogomoletz Institute of Physiology, National Academy of Sciences of Ukraine, Kyiv, Ukraine
DOI: https://doi.org/10.15407/fz56.04.014

Abstract

Concentration of neuraminidase (NEU), an enzyme which cleaves negatively charged sialic acids from carbohydrate moieties of the cellular memabrane, could vary depending on physiological conditions. Multiple evidences suggest that fluctuations of NEU extracellular concentrations can influence neuronal activity. In the present study we examined the effect of down regulation of endog­enous NEU activity on seizure-like activity (SLA) induced by gabazine (specific blocker of inhibi­tory synaptic transmission) in the hippocampal CA1 pyramidal region of cultured slices. We show that in slices pretreated with the blocker of endogenous NEU, N-acetyl-2,3-dehydro-2-deoxyneuraminic acid (NADNA), duration of synchronous oscillations induced by gabazine was considerably increased comparatively to control untreated slices. This study adds further information that changes in the level of NEU activity is an important factor, which can affect neuronal network excitability.

Keywords: polysialic acid, neuraminidase blocker, seizure, gabazine, hippocampus

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