Cited by 25Neurotransmitter Receptor Influence on BehaviorCircadian rhythm and melatoninSubstance Abuse Treatment and Outcomes

Photoperiodic suppression of drug reinstatement

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Sorg, B.A., Stark, G., Sergeeva, A., Jansen, H.T.·2011·Neuroscience

Abstract

The rewarding influence of drugs of abuse varies with time of day and appears to involve interactions between the circadian and the mesocorticolimbic dopamine systems. The circadian system is also intimately involved in measuring daylength. Thus, the present study examined the impact of changing daylength (photoperiod) on cocaine-seeking behaviors. Male Sprague-Dawley rats were trained and tested on a 12L:12D light:dark schedule for cocaine-induced reinstatement of conditioned place preference (CPP) at three times of day (Zeitgeber time (ZT): 4, 12, and 20) to determine a preference score. Rats were then shifted to either shorter (6L:18D) or longer (18L:6D) photoperiods and then to constant conditions, re-tested for cocaine-induced reinstatement under each different condition, and then returned to their original photoperiod (12L:12D) and tested once more. Rats exhibited a circadian profile of preference score in constant darkness with a peak at 12 h after lights-off. At both ZT4 and ZT20, but not at ZT12, shorter photoperiods profoundly suppressed cocaine reinstatement, which did not recover even after switching back to 12L:12D. In contrast, longer photoperiods did not alter reinstatement. Separate studies showed that the suppression of cocaine reinstatement was not due to repeated testing. In an additional experiment, we examined the photoperiodic regulation of tyrosine hydroxylase (TH) and dopamine transporter (DAT) proteins in drug-naive rats. These results revealed photoperiodic modulation of proteins in the prefrontal cortex and dorsal striatum, but not in the nucleus accumbens or ventral tegmental area. Together, these findings add further support to the circadian genesis of cocaine-seeking behaviors and demonstrate that drug-induced reinstatement is modulated by photoperiod. Furthermore, the results suggest that photoperiod partly contributes to the seasonal expression of certain drug-related behaviors in humans living at different latitudes and thus our findings may have implications for novel targeting of circadian rhythms in the treatment of addiction.

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  • Animal studies suggest that short days increase dopamine turnover in the pituitary and suppress tyrosine hydroxylase expression in the prefrontal cortex.

    “In line with this hypothesis, animal studies suggest that short days increase dopamine turnover in the pituitary (Steger et al., 1995) and suppress tyrosine hydroxylase expression in the prefrontal cortex (Sorg et al., 2011).”

    From Behavioral and cognitive effects of tyrosine intake in healthy human adults (2015) · cites this paper as Sorg et al., 2011

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Authors
Sorg, B. A., Stark, G., Sergeeva, A., & Jansen, H. T.
Affiliations
Washington State University (US)
Corresponding author
Jansen, H.T.
Venue
Neuroscience
Publisher
Elsevier BV
Published
2011-03
Volume
176
Pages
284-295
ISSN
0306-4522 (ISSN-L)
OpenAlex
W1989219562
Cited by
25
References
108
Citations by year
2026: 1 · 2025: 1 · 2023: 2 · 2022: 1 · 2021: 3 · 2020: 1 · 2019: 2 · 2018: 2 · 2017: 2 · 2016: 1 · 2015: 1 · 2014: 4 · 2013: 2 · 2012: 1
FWCI
0.52
Type
journal article
Language
en
Open access
Locations
  • Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
NIH (DA023202)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
Keywords
photoperiod, circadian rhythm, cocaine, drug-seeking behavior, Zeitgeber time, tyrosine hydroxylase, dopamine transporter, prefrontal cortex, dorsal striatum, mesocorticolimbic dopamine system, addiction treatment
MeSH terms
Animals, Behavior, Animal, Brain, Circadian Rhythm, Conditioning, Psychological, Male, Tyrosine 3-Monooxygenase, Blotting, Western, Behavior, Addictive, Rats, Sprague-Dawley, Photoperiod, Cocaine-Related Disorders, Dopamine Plasma Membrane Transport Proteins, Rats, Drug-Seeking Behavior

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