Cited by 134Parkinson's Disease Mechanisms and TreatmentsNicotinic Acetylcholine Receptors StudyNeurotransmitter Receptor Influence on Behavior

Nicotine prevents striatal dopamine loss produced by 6-hydroxydopamine lesion in the substantia nigra11Published on the World Wide Web on 1 December 2000.

Costa, Gustavo, Abin-Carriquiry, J.A., Dajas, Federico·2001·Brain Research

Abstract

While the work of several groups has shown the neuroprotective effects of nicotine in vitro, evidences for the same effects in vivo are controversial, mainly regarding neuroprotection in experimental models of Parkinson's disease. In this context, we investigated the capability of various systemic administration schedules of nicotine to prevent the loss of striatal dopamine levels produced by partial or extensive 6-hydroxydopamine (6-OHDA) lesion of rat substantia nigra (SN). Eight days after 6- and 10-microg injections of 6-OHDA in the SN there was a significant decrease of dopamine concentrations in the corpus striatum (CS) and a concomitant increase in dopamine turnover. While 10 microg 6-OHDA produced an almost complete depletion of dopamine in the SN, 6 microg decreased dopamine levels by 50%. Subcutaneous nicotine (1 mg/kg) administered 4 h before and 20, 44 and 68 h after 6 microg 6-OHDA, prevented significantly the striatal dopamine loss. Administered only 18 or 4 h before or only 20, 44 and 68 h after, nicotine failed to counteract the loss of dopamine or the increase in dopamine turnover observed in the CS. Nicotine also failed to prevent significantly the decrease of striatal dopamine levels produced by the 10-microg 6-OHDA intranigral dose. Chlorisondamine, a long-lasting nicotinic acetylcholine receptor antagonist, reverted significantly the nicotinic protective effects on dopamine concentrations. These results are showing that putative neuroprotective effects of nicotine in vivo depend on an acute intermittent administration schedule and on the extent of the brain lesion.

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Crossref · 10.1016/s0006-8993(00)03087-0

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Authors
Costa, G., Abin-Carriquiry, J. A., & Dajas, F.
Affiliations
Instituto de Investigaciones Biológicas Clemente Estable (UY)
Venue
Brain Research
Publisher
Elsevier BV
Published
2001-01
Volume
888
Issue
2
Pages
336-342
ISSN
0006-8993 (ISSN-L)
OpenAlex
W2023903683
Cited by
134
References
45
Citations by year
2026: 1 · 2025: 4 · 2024: 3 · 2023: 5 · 2022: 2 · 2021: 3 · 2020: 5 · 2019: 3 · 2018: 4 · 2017: 2 · 2016: 2 · 2015: 8 · 2014: 7 · 2013: 6 · 2012: 8
FWCI
6.10
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
nicotine, neuroprotection, Parkinson's disease, 6-hydroxydopamine lesion, substantia nigra, striatal dopamine, dopamine turnover, nicotinic acetylcholine receptors, chlorisondamine, administration schedule, dopamine depletion
MeSH terms
Animals, Chlorisondamine, Corpus Striatum, Disease Models, Animal, Dopamine, Dose-Response Relationship, Drug, Drug Administration Schedule, Injections, Subcutaneous, Male, Nicotine, Parkinson Disease, Secondary, Substantia Nigra, 3,4-Dihydroxyphenylacetic Acid, Oxidopamine, Rats, Sprague-Dawley, Neuroprotective Agents, Nicotinic Agonists, Nicotinic Antagonists, Rats

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