Cited by 68Genetic Neurodegenerative DiseasesNeuroscience and Neuropharmacology ResearchNitric Oxide and Endothelin Effects

Nitric oxide synthase inhibition prevents acute quinolinate-induced striatal neurotoxicity

Pérez-Severiano, Francisca, Escalante, Bruno, Ríos, Camilo·1998·Neurochemical Research

Abstract

Quinolinic acid (QUIN) is an endogenous excitotoxin acting on N-methyl-D-aspartate (NMDA) receptors, that leads to neurotoxic damage resembling the alterations observed in Huntington's disease. Two major end-points of QUIN induced neurotoxicity are both circling behavior (CB) and lipid peroxidation (LP). Recently, nitric oxide (NO) has been implicated as a mediator of cell injury in some neurological disorders, thus, NO as a free radical might be involved in QUIN-induced neurotoxicity and oxidative stress. In the present study we evaluated the possible role of NO on QUIN-induced neurotoxicity, by measuring nitric oxide synthase activity (NOS), before and after QUIN-induced damage and by evaluating the effect of NOS inhibition on acute QUIN-induced CB and LP. Rats were striatally microinjected with QUIN (240 nmol/microl). QUIN administration increased NOS activity by 327% as compared to control values and this enhancement was inhibited by i.v. pretreatment with a NOS inhibitor the N(G)-nitro-L-arginine methyl ester (L-NAME) (10 mg/kg). QUIN-induced CB was also attenuated by pretreatment of rats with 1, 5, 10 and 15 mg/kg of L-NAME by -37, -55, -62 and -74% vs QUIN respectively. Similarly, L-NAME also reduced by 32% the QUIN-induced LP. These findings suggest that enhanced NOS activity may participate in QUIN-induced neurotoxicity and oxidative stress.

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Crossref · 10.1023/a:1020700401678

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Authors
Pérez-Severiano, F., Escalante, B., & Ríos, C.
Affiliations
Instituto Politécnico Nacional (MX)
Venue
Neurochemical Research
Published
1998-10
Volume
23
Issue
10
Pages
1297-1302
ISSN
  • 0364-3190 (ISSN-L)
  • 1573-6903
OpenAlex
W2113919453
Cited by
68
References
0
Citations by year
2024: 1 · 2022: 1 · 2021: 1 · 2020: 1 · 2018: 2 · 2017: 3 · 2016: 2 · 2015: 4 · 2013: 3
FWCI
1.71
Type
journal article
Language
en
Open access
closed
Locations
  • Neurochemical Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
Consejo Nacional de Ciencia y Tecnología
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Genetic Neurodegenerative Diseases
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
Keywords
quinolinic acid, nitric oxide synthase, striatal neurotoxicity, NMDA receptor excitotoxicity, circling behavior, lipid peroxidation, oxidative stress, L-NAME, Huntington's disease model
MeSH terms
Animals, Corpus Striatum, Enzyme Inhibitors, Male, Motor Activity, Rats, Wistar, Quinolinic Acid, Nitric Oxide Synthase, NG-Nitroarginine Methyl Ester, Rats

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