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Voluntary ethanol i...
Voluntary ethanol intake increases extracellular acetylcholine levels in the ventral tegmental area in the rat.
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- Larsson, Anna, 1973 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysiologi och farmakologi, Avdelningen för farmakologi,Institute of Physiology and Pharmacology, Dept of Pharmacology,Institute of Physiology and Pharmacology, Department of Pharmacology, The Sahlgrenska Academy, Göteborg University
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- Edström, Lena (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysiologi och farmakologi, Avdelningen för farmakologi,Institute of Physiology and Pharmacology, Dept of Pharmacology,Institute of Physiology and Pharmacology, Department of Pharmacology, The Sahlgrenska Academy, Göteborg University
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- Svensson, Lennart, 1952 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysiologi och farmakologi, Avdelningen för farmakologi,Institute of Physiology and Pharmacology, Dept of Pharmacology,Institute of Physiology and Pharmacology, Department of Pharmacology, The Sahlgrenska Academy, Göteborg University
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- Söderpalm, Bo, 1959 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för klinisk neurovetenskap, Sektionen för psykiatri,Institute of Clinical Neurosciences, Section of Psychiatry,Institute of Clinical Neuroscience, Section of Psychiatry, The Sahlgrenska Academy
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- Engel, Jörgen, 1942 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysiologi och farmakologi, Avdelningen för farmakologi,Institute of Physiology and Pharmacology, Dept of Pharmacology,Institute of Physiology and Pharmacology, Department of Pharmacology, The Sahlgrenska Academy, Göteborg University
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(creator_code:org_t)
- Oxford University Press (OUP), 2005
- 2005
- Engelska.
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Ingår i: Alcohol and Alcoholism. - : Oxford University Press (OUP). - 0735-0414 .- 1464-3502. ; 40:5, s. 349-358
- Relaterad länk:
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https://academic.oup...
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https://gup.ub.gu.se...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- AIMS: Concurrent use of ethanol and nicotine (tobacco) is often seen in human beings. In previous animal experiments, we have demonstrated that nicotinic acetylcholine receptors, especially alpha-conotoxin MII and mecamylamine sensitive receptors located in the ventral tegmental area may be involved in the stimulatory, dopamine enhancing, and rewarding effects of ethanol in rodents. Ethanol may exert these effects via direct interaction with nicotinic acetylcholine receptors and/or indirectly via enhancement of extracellular acetylcholine levels in the ventral tegmental area. The present experiments investigated a possible indirect effect of ethanol in stimulating the mesoaccumbal dopamine system. METHODS: Neurochemical effects of voluntary ethanol intake on extracellular ventral tegmental acetylcholine and accumbal dopamine levels were measured by means of in vivo microdialysis with a two-probe approach in freely moving rats. RESULTS: Obtained data indicate that voluntary ethanol intake ( approximately 0.7 g/kg/h) leads to an increase of extracellular acetylcholine levels in the ventral tegmental area, and an almost time-locked increase of dopamine levels in the nucleus accumbens. A positive correlation between the ventral tegmental acetylcholine levels and ethanol intake as well as preference was also observed. CONCLUSION: The present results suggest that voluntary ethanol intake enhances extracellular ventral tegmental acetylcholine that may interact with nicotinic acetylcholine receptors, possibly alpha-conotoxin MII sensitive receptors, localized in the ventral tegmental area that subsequently may stimulate dopamine overflow in the nucleus accumbens.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Fysiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Physiology (hsv//eng)
Nyckelord
- ethanol
- ventral tegmental area
- acetylcholine
- nucleus accumbens
- dopamine
- in vivo microdialysis
- mice
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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