Article (Scientific journals)
Exercise against cocaine sensitization in mice: a [18F]fallypride micro-PET study.
Becker, Guillaume; Lespine, Louis-Ferdinand; Bahri, Mohamed Ali et al.
2022In Brain Communications, 4 (1), p. 294
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Keywords :
Exercise; cocaine sensitization; mice; dopamine; micro-PET; fallypride; 18F
Abstract :
[en] Wheel-running exercise in laboratory rodents (animal model useful to study the neurobiology of aerobic exercise) decreases behavioural markers of vulnerability to addictive properties of various drugs of abuse including cocaine. However, neurobiological mechanisms underpinning this protective effect are far from fully characterized. Here, 28-day-old female C57BL/6J mice were housed with (n=48) or without (n=48) a running wheel for 6 weeks before being tested for acute locomotor responsiveness and initiation of locomotor sensitization to intraperitoneal injections of 8 mg/kg cocaine. The long-term expression of sensitization took place 3 weeks after the last session. On the day after, all mice underwent a micro-PET imaging session with [18F]fallypride radiotracer (dopamine 2/3 receptors antagonist). Exercised mice were less sensitive to acute and sensitized cocaine hyperlocomotor effects, such attenuation being particularly well-marked for long-term expression of sensitization (η²p = 0.262). Chronic administration of cocaine was associated with a clear-cut increase of [18F]fallypride binding potential in mouse striatum (η²p = 0.170) while wheel-running exercise was associated with a moderate decrease in dopamine 2/3 receptors density in striatum (η²p = 0.075), a mechanism that might contribute to protective properties of exercise against drugs of abuse vulnerability.
Research center :
GIGA CRC (Cyclotron Research Center) In vivo Imaging-Aging & Memory - ULiège
Disciplines :
Neurosciences & behavior
Author, co-author :
Becker, Guillaume ;  Université de Liège - ULiège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et revalid. cogn.
Lespine, Louis-Ferdinand 
Bahri, Mohamed Ali  ;  Université de Liège - ULiège > GIGA CRC In vivo Imaging - Aging & Memory
Serrano Navacerrada, Maria Elisa 
Lemaire, Christian ;  Université de Liège - ULiège > CRC In vivo Imaging-Radiochemistry
Luxen, André ;  Université de Liège - ULiège > Département de chimie (sciences) > Département de chimie (sciences)
Tirelli, Ezio ;  Université de Liège - ULiège > Département de Psychologie > Méta-recherche et éthique de la méthodologie quantitative
Plenevaux, Alain  ;  Université de Liège - ULiège > GIGA CRC In vivo Imaging - Preclinical Imaging
Language :
English
Title :
Exercise against cocaine sensitization in mice: a [18F]fallypride micro-PET study.
Publication date :
2022
Journal title :
Brain Communications
eISSN :
2632-1297
Publisher :
Oxford University Press, Oxford, United Kingdom
Volume :
4
Issue :
1
Pages :
fcab294
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
ULg - Université de Liège [BE]
Funding text :
ULG - FSR
Available on ORBi :
since 11 January 2022

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