ArticleAddiction biology2021
Chronic opioid exposure differentially modulates oxycodone self-administration in male and female rats.
Article in Addiction biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
22 citing papers in PubMed, 29 citations in OpenAlex.
- Article
- Impact of sex on heroin intravenous self-administration by heterogeneous stock rats.Psychopharmacology · 2026Article
- Behavioral flexibility and gut microbiome as potential predictors of oral oxycodone self-administration.bioRxiv : the preprint server for biology · 2026Article
- Impact of Age on Heroin Intravenous Self-Administration in Wistar Rats.bioRxiv : the preprint server for biology · 2026Article
- Impact of Sex on Heroin Intravenous Self-Administration by Heterogeneous Stock Rats.bioRxiv : the preprint server for biology · 2026Article
- Negative affective states are not detected in rats following an intravenous self-administration regimen leading to incubation of oxycodone craving.bioRxiv : the preprint server for biology · 2026Article
- Oxycodone self-administration and genetic background exert community-specific effects in the gut microbiome.Scientific reports · 2026Article
- Incubation of oxycodone craving is associated with CP-AMPAR upregulation in D1 and A2a receptor-expressing medium spiny neurons in nucleus accumbens core and shell.Neuropharmacology · 2026Article
- Effects of acute adolescent stress on the acquisition and maintenance of intravenous oxycodone self-administration in male and female rats.Drug and alcohol dependence · 2026Article
- Impact of morphine dependence and withdrawal on economic demand for fentanyl, cocaine, and methamphetamine in rats.Drug and alcohol dependence · 2026Article
- Effects of acute adolescent stress on the acquisition and maintenance of intravenous oxycodone self-administration in male and female rats.bioRxiv : the preprint server for biology · 2025Article
- Sex and genetic background influence intravenous oxycodone self-administration in the hybrid rat diversity panel.Frontiers in psychiatry · 2024Article
- Oxycodone withdrawal is associated with increased cocaine self-administration and aberrant accumbens glutamate plasticity in rats.Neuropharmacology · 2024Article
- Mu Opioid Receptor-Positive Neurons in the Dorsal Raphe Nucleus Are Impaired by Morphine Abstinence.Biological psychiatry · 2023Article
- Chronic inflammatory pain promotes place preference for fentanyl in male rats but does not change fentanyl self-administration in male and female rats.Neuropharmacology · 2023Article
- Effects of sex and estrous cycle on intravenous oxycodone self-administration and the reinstatement of oxycodone-seeking behavior in rats.bioRxiv : the preprint server for biology · 2023Article
- Sex differences in VTA GABA transmission and plasticity during opioid withdrawal.Scientific reports · 2023Article
- Effects of sex and estrous cycle on intravenous oxycodone self-administration and the reinstatement of oxycodone-seeking behavior in rats.Frontiers in behavioral neuroscience · 2023Article
- Ranking the contribution of behavioral measures comprising oxycodone self-administration to reinstatement of drug-seeking in male and female rats.Frontiers in behavioral neuroscience · 2022Article
- Paradoxical changes in brain reward status during oxycodone self-administration in a novel test of the negative reinforcement hypothesis.British journal of pharmacology · 2021Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
Withdrawal from opioid painkillers can produce short-lived physical symptoms and protracted psychological symptoms including anxiety and depressive-like states that often lead to opioid misuse and opioid use disorder (OUD). Studies testing the hypothesis that opioid withdrawal potentiates the reinforcing effects of opioid self-administration (SA) are largely inconclusive and have focused on males. Although some clinical evidence indicates that women are more likely than men to misuse opioids to self-medicate, preclinical studies in both sexes are lacking. Based on clinical reports, we hypothesized that withdrawal from escalating-dose morphine injections that approximates a prescription painkiller regimen would lead to increased oxycodone SA to a greater extent in female compared to male rats. After escalating-dose morphine (5-30 mg/kg or vehicle, twice/day for 12 days), rats underwent a 2-week abstinence period during which withdrawal signs were measured. The impact of this treatment was assessed on oxycodone SA acquisition, maintenance, dose response, and progressive ratio responding, with additional analyses to compare sexes. We found that both sexes expressed somatic withdrawal, whereas only males demonstrated hyperalgesia in the warm water tail flick assay. During SA acquisition, males with prior morphine exposure took significantly more oxycodone than females. Finally, females with prior morphine exposure demonstrated the lowest motivation to SA oxycodone in the progressive ratio test. Contrary to our initial hypothesis, our findings suggest that prior opioid exposure increases vulnerability to initiate misuse more in males and decreases the reinforcing efficacy of oxycodone in females.
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Registered trials
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