1
|
Ramirez LA, Przybysz KR, Pitock JR, Starr EM, Yang H, Glover EJ. Attenuated incubation of ethanol-induced conditioned taste aversion in a model of dependence. Psychopharmacology (Berl) 2024; 241:1191-1203. [PMID: 38383904 PMCID: PMC11105978 DOI: 10.1007/s00213-024-06553-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 02/07/2024] [Indexed: 02/23/2024]
Abstract
RATIONALE Preclinical studies report attenuated ethanol-induced conditioned taste aversion (CTA) following chronic ethanol exposure, suggesting that tolerance develops to the aversive properties of ethanol. However, these studies are confounded by pre-exposure to the unconditioned stimulus (US; ethanol), which is well known to hinder conditioning. OBJECTIVES This study was designed to determine whether chronic ethanol exposure produces tolerance to the aversive properties of ethanol in the absence of a US pre-exposure confound. METHODS CTA was performed in adult male and female Long-Evans rats by pairing 0.1% ingested saccharin with an intraperitoneal injection of ethanol (1.5 or 2.0 g/kg) or saline. Rats were then rendered ethanol dependent using chronic intermittent ethanol (CIE) vapor exposure. Controls were exposed to room air (AIR). The effect of chronic ethanol on CTA expression and reconditioning were examined following vapor exposure. RESULTS Prior to vapor exposure, both sexes developed CTA to a comparable degree with 2.0 g/kg producing greater CTA than 1.5 g/kg ethanol. Following vapor exposure, AIR controls exhibited an increase in CTA magnitude compared to pre-vapor levels. This effect was largely absent in CIE-exposed rats. Re-conditioning after vapor exposure facilitated increased CTA magnitude to a similar degree in AIR- and CIE-exposed males. In contrast, CTA magnitude was unchanged by re-conditioning in females. CONCLUSIONS These data suggest that chronic ethanol does not facilitate tolerance to the aversive properties of ethanol but rather attenuates incubation of ethanol-induced CTA. Loss of CTA incubation suggests that CIE exposure disrupts circuits encoding aversion.
Collapse
Affiliation(s)
- Lindsey A Ramirez
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, 1601 W Taylor St, MC912, Chicago, IL, 60612, USA
| | - Kathryn R Przybysz
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, 1601 W Taylor St, MC912, Chicago, IL, 60612, USA
| | - Joseph R Pitock
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, 1601 W Taylor St, MC912, Chicago, IL, 60612, USA
| | - E Margaret Starr
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, 1601 W Taylor St, MC912, Chicago, IL, 60612, USA
| | - Hyerim Yang
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, 1601 W Taylor St, MC912, Chicago, IL, 60612, USA
| | - Elizabeth J Glover
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, 1601 W Taylor St, MC912, Chicago, IL, 60612, USA.
| |
Collapse
|
2
|
Ramirez LA, Przybysz KR, Pitock JR, Starr EM, Yang H, Glover EJ. Attenuated incubation of ethanol-induced conditioned taste aversion in a model of dependence. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.09.13.557582. [PMID: 37745477 PMCID: PMC10515951 DOI: 10.1101/2023.09.13.557582] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Rationale Preclinical studies report attenuated ethanol-induced conditioned taste aversion (CTA) following chronic ethanol exposure, suggesting that tolerance develops to the aversive properties of ethanol. However, these studies are confounded by pre-exposure to the unconditioned stimulus (US; ethanol), which is well known to hinder conditioning. Objectives This study was designed to determine whether chronic ethanol exposure produces tolerance to the aversive properties of ethanol in the absence of a US pre-exposure confound. Methods CTA was performed in adult male and female Long-Evans rats by pairing 0.1% ingested saccharin with an intraperitoneal injection of ethanol (1.5 or 2.0 g/kg) or saline. Rats were then rendered ethanol dependent using chronic intermittent ethanol (CIE) vapor exposure. Controls were exposed to room air (AIR). The effect of chronic ethanol on CTA expression and reconditioning were examined following vapor exposure. Results Prior to vapor exposure, both sexes developed CTA to a comparable degree with 2.0 g/kg producing greater CTA than 1.5 g/kg ethanol. Following vapor exposure, AIR controls exhibited an increase in CTA magnitude compared to pre-vapor levels. This effect was absent in CIE-exposed rats. These group differences were eliminated upon re-conditioning after vapor exposure. Conclusions These data suggest that chronic ethanol does not facilitate tolerance to the aversive properties of ethanol but rather, attenuates incubation of ethanol-induced CTA. Loss of CTA incubation suggests that CIE exposure disrupts circuits encoding aversion.
Collapse
Affiliation(s)
- Lindsey A Ramirez
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, USA
| | - Kathryn R Przybysz
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, USA
| | - Joseph R Pitock
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, USA
| | - E Margaret Starr
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, USA
| | - Hyerim Yang
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, USA
| | - Elizabeth J Glover
- Center for Alcohol Research in Epigenetics, Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, USA
| |
Collapse
|
3
|
Effects of early social experience on sexual behavior in Japanese quail (Coturnix Japonica). Learn Behav 2022; 50:283-297. [DOI: 10.3758/s13420-022-00527-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2022] [Indexed: 11/08/2022]
|
4
|
Fabio MC, Macchione AF, Nizhnikov ME, Pautassi RM. Prenatal ethanol increases ethanol intake throughout adolescence, alters ethanol-mediated aversive learning, and affects μ but not δ or κ opioid receptor mRNA expression. Eur J Neurosci 2015; 41:1569-79. [PMID: 25865037 DOI: 10.1111/ejn.12913] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 04/07/2015] [Accepted: 04/07/2015] [Indexed: 11/27/2022]
Abstract
Animal models of prenatal ethanol exposure (PEE) have indicated a facilitatory effect of PEE on adolescent ethanol intake, but few studies have assessed the effects of moderate PEE throughout adolescence. The mechanisms underlying this facilitatory effect remain largely unknown. In the present study, we analysed ethanol intake in male and female Wistar rats with or without PEE (2.0 g/kg, gestational days 17-20) from postnatal days 37 to 62. The results revealed greater ethanol consumption in PEE rats than in controls, which persisted throughout adolescence. By the end of testing, ethanol ingestion in PEE rats was nearly 6.0 g/kg. PEE was associated with insensitivity to ethanol-induced aversion. PEE and control rats were further analysed for levels of μ, δ and κ opioid receptor mRNA in the infralimbic cortex, nucleus accumbens shell, and ventral tegmental area. Similar levels of mRNA were observed across most areas and opioid receptors, but μ receptor mRNA in the ventral tegmental area was significantly increased by PEE. Unlike previous studies that assessed the effects of PEE on ethanol intake close to birth, or in only a few sessions during adolescence, the present study observed a facilitatory effect of PEE that lasted throughout adolescence. PEE was associated with insensitivity to the aversive effect of ethanol, and increased levels of μ opioid receptor transcripts. PEE is a prominent vulnerability factor that probably favors the engagement of adolescents in risky trajectories of ethanol use.
Collapse
Affiliation(s)
- María Carolina Fabio
- Instituto de Investigación Médica M. y M. Ferreyra (INIMEC - CONICET-UNC), Friuli 2434, Córdoba, C.P. 5000, Argentina.,Facultad de Psicología, Universidad Nacional de Córdoba (UNC), Córdoba, Argentina
| | - Ana Fabiola Macchione
- Instituto de Investigación Médica M. y M. Ferreyra (INIMEC - CONICET-UNC), Friuli 2434, Córdoba, C.P. 5000, Argentina
| | - Michael E Nizhnikov
- Department of Psychology, Southern Connecticut State University, New Haven, CT, USA
| | - Ricardo Marcos Pautassi
- Instituto de Investigación Médica M. y M. Ferreyra (INIMEC - CONICET-UNC), Friuli 2434, Córdoba, C.P. 5000, Argentina.,Facultad de Psicología, Universidad Nacional de Córdoba (UNC), Córdoba, Argentina
| |
Collapse
|
5
|
Gaztañaga M, Aranda-Fernández PE, Díaz-Cenzano E, Chotro MG. Latent inhibition and facilitation of conditioned taste aversion in preweanling rats. Dev Psychobiol 2014; 57:96-104. [PMID: 25367561 DOI: 10.1002/dev.21263] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 10/01/2014] [Indexed: 11/11/2022]
Abstract
Early in ontogeny, taste preexposure has been found to induce latent inhibition as well as produce a facilitation of conditioned taste aversion (CTA). In this study, the effect of taste preexposure on CTA was investigated in 13-14 day old rats as a function of taste preexposure (0, 1, or 3 trials) and unconditioned stimulus intensity (LiCl: 0, 0.15, or 0.30 M). After one conditioning trial, with the low intensity US, an aversion was only observed after taste preexposure (facilitation). When using the strong US, an aversion was found without preexposure while latent inhibition was observed with 3 preexposure trials. In conclusion, stimulus preexposure can either facilitate conditioning or produce latent inhibition in infant rats, depending on the amount of stimulus preexposure and the intensity of the US.
Collapse
Affiliation(s)
- Mirari Gaztañaga
- Faculty of Psychology, University of the Basque Country UPV/EHU, Biscay, Spain
| | | | | | | |
Collapse
|
6
|
Revillo DA, Gaztañaga M, Aranda E, Paglini MG, Chotro MG, Arias C. Context-dependent latent inhibition in preweanling rats. Dev Psychobiol 2014; 56:1507-17. [PMID: 25209712 DOI: 10.1002/dev.21236] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 06/11/2014] [Indexed: 11/10/2022]
Abstract
Preexposure to a conditioned stimulus (CS) usually weakens conditioning, an effect known as latent inhibition. Similar to other learning interference effects, latent inhibition has been characterized as context-dependent, which means that the magnitude of this effect can be attenuated by changing the context between the different phases of the procedure (e.g., preexposure and conditioning). Latent inhibition has been found with a variety of procedures in infant rats, but the few studies that examined the context-dependency of this phenomenon during this ontogenetic period found no context-change effect. The present study explored the context-dependency of latent inhibition during infancy using a conditioned taste aversion preparation and employing contexts enriched with distinctive odors to increase the possible efficacy of the context manipulation. Experiment 1 showed that three preexposures to the CS (saccharin) were sufficient to retard conditioning to the same CS, although this effect was also observed in a control group preexposed to an alternative taste stimulus (saline), in comparison with a non-preexposed control group. In Experiment 2a, the CS-preexposure effect was found to be specific to the preexposed CS when the number of preexposures was increased. This effect was revealed as context-dependent in Experiment 2b, since it was attenuated by changing the context between preexposure and conditioning. The present result is consistent with recent studies showing the context-dependency of extinction in preweanling rats, thus demonstrating these animals' capacity to learn about context early on in their development.
Collapse
Affiliation(s)
- D A Revillo
- Instituto de Investigación Médica M. y M. Ferreyra, IMMF-INIMEC-CONICET-UNC, Friuli 2434, Córdoba, Argentina
| | | | | | | | | | | |
Collapse
|
7
|
Revillo DA, Castello S, Paglini G, Arias C. Reacquisition, reinstatement, and renewal of a conditioned taste aversion in preweanling rats. Dev Psychobiol 2013; 56:713-25. [DOI: 10.1002/dev.21140] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Accepted: 04/26/2013] [Indexed: 12/17/2022]
Affiliation(s)
- D. A. Revillo
- Instituto de Investigación Médica M. y M. Ferreyra, INIMEC-CONICET, Universidad Nacional de Córdoba; Friuli 2434 Córdoba Argentina
| | - S. Castello
- Instituto de Investigación Médica M. y M. Ferreyra, INIMEC-CONICET, Universidad Nacional de Córdoba; Friuli 2434 Córdoba Argentina
| | - G. Paglini
- Instituto de Investigación Médica M. y M. Ferreyra, INIMEC-CONICET, Universidad Nacional de Córdoba; Friuli 2434 Córdoba Argentina
| | - C. Arias
- Instituto de Investigación Médica M. y M. Ferreyra, INIMEC-CONICET, Universidad Nacional de Córdoba; Friuli 2434 Córdoba Argentina
- Facultad de Psicologia; Universidad del País Vasco-UPV/EHU; Avda Tolosa 70 San Sebastián Spain
| |
Collapse
|
8
|
Moore EM, Forrest RD, Boehm SL. Genotype modulates age-related alterations in sensitivity to the aversive effects of ethanol: an eight inbred strain analysis of conditioned taste aversion. GENES, BRAIN, AND BEHAVIOR 2013; 12:70-7. [PMID: 23171343 PMCID: PMC3553292 DOI: 10.1111/gbb.12004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 10/18/2012] [Accepted: 11/15/2012] [Indexed: 02/04/2023]
Abstract
Adolescent individuals display altered behavioral sensitivity to ethanol, which may contribute to the increased ethanol consumption seen in this age-group. However, genetics also exert considerable influence on both ethanol intake and sensitivity. Currently there is little research assessing the combined influence of developmental and genetic alcohol sensitivities. Sensitivity to the aversive effects of ethanol using a conditioned taste aversion (CTA) procedure was measured during both adolescence (P30) and adulthood (P75) in eight inbred mouse strains (C57BL/6J, DBA/2J, 129S1/SvImJ, A/J, BALB/cByJ, BTBR T(+) tf/J, C3H/HeJ and FVB/NJ). Adolescent and adult mice were water deprived, and subsequently provided with access to 0.9% (v/v) NaCl solution for 1 h. Immediately following access mice were administered ethanol (0, 1.5, 2.25 and 3 g/kg, ip). This procedure was repeated in 72 h intervals for a total of five CTA trials. Sensitivity to the aversive effects of ethanol was highly dependent upon both strain and age. Within an inbred strain, adolescent animals were consistently less sensitive to the aversive effects of ethanol than their adult counterparts. However, the dose of ethanol required to produce an aversion response differed as a function of both age and strain.
Collapse
Affiliation(s)
- Eileen M. Moore
- Center for Development and Behavioral Neuroscience, Department of Psychology, Binghamton University – SUNY Binghamton, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
- Indiana Alcohol Research Center, Psychobiology of Addictions, Department of Psychology, Purdue School of Science, IUPUI, 402 N. Blackford Street, LD 124, Indianapolis, IN 46202, USA
| | - Robert D. Forrest
- Indiana Alcohol Research Center, Psychobiology of Addictions, Department of Psychology, Purdue School of Science, IUPUI, 402 N. Blackford Street, LD 124, Indianapolis, IN 46202, USA
| | - Stephen L. Boehm
- Indiana Alcohol Research Center, Psychobiology of Addictions, Department of Psychology, Purdue School of Science, IUPUI, 402 N. Blackford Street, LD 124, Indianapolis, IN 46202, USA
| |
Collapse
|