Effects of consuming a diet high in fat and/or sugar on the locomotor effects of acute and repeated cocaine in male and female C57BL/6J mice

Drug abuse and obesity are serious public health problems. Dopamine plays a central role in mediating the reinforcing effects of drugs and food. Prolonged use of drugs is known to alter the function and/or sensitivity of many neurotransmitter systems, including dopamine; however, the impact of consuming foods high in fat and/or sugar is less clear. These studies characterized the locomotor effects of acute and repeated cocaine in male and female C57BL/6J mice consuming 1 of 4 diets: (a) standard chow + water; (b) standard chow + 10% sucrose solution; (c) high-fat chow + water; or (d) high-fat chow + 10% sucrose solution. The acute locomotor effects of cocaine (3.2-32.0 mg/kg) were evaluated 4 weeks after initiating dietary conditions; the effects of repeated cocaine administration were evaluated after 5, 6, 7, and 12 weeks. During acute tests, mice consuming a diet high in fat and/or sucrose exhibited greater locomotor responses to cocaine than mice consuming standard chow and water, regardless of sex. Although diet-induced enhancements persisted across repeated cocaine testing, locomotor sensitization developed more rapidly in females drinking sucrose (and consuming either standard or high-fat chow) than in females consuming standard chow and water. In addition to providing evidence that consuming a diet high in fat and/or sugar enhances abuse-related effects of cocaine in ways that might increase vulnerability to abuse cocaine, these studies identified a potentially important sex-related difference in the interaction between nutrition and cocaine effects, with the impacts of sucrose consumption being greater in females than in males..

Medienart:

Artikel

Erscheinungsjahr:

2015

Erschienen:

2015

Enthalten in:

Zur Gesamtaufnahme - volume:23

Enthalten in:

Experimental and clinical psychopharmacology - 23(2015), 4, Seite 228-237

Sprache:

Englisch

Beteiligte Personen:

Collins, Gregory T [VerfasserIn]
Chen, Yu [Sonstige Person]
Tschumi, Chris [Sonstige Person]
Rush, Elise L [Sonstige Person]
Mensah, Ayele [Sonstige Person]
Koek, Wouter [Sonstige Person]
France, Charles P [Sonstige Person]

Links:

Volltext
www.ncbi.nlm.nih.gov
search.proquest.com

Themen:

Animal
Article
Behavioral sensitization
Cocaine
Empirical Study
Female
High-fat diet
Locomotor Activity Tests
Male
Quantitative Study
Sex differences
Sucrose

doi:

10.1037/pha0000019

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

OLC1959739425