Orbitofrontal cortex and dorsal striatum functional connectivity predicts incubation of opioid craving after voluntary abstinence
| Autor: | Aniruddha Shekara, Ying Duan, Ida Fredriksson, Pei Jung Tsai, Yihong Yang, Sarah V. Applebey, Jennifer M. Bossert, Hanbing Lu, Yavin Shaham |
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| Rok vydání: | 2021 |
| Předmět: |
Male
medicine.medical_specialty media_common.quotation_subject Prefrontal Cortex Craving Striatum Rats Sprague-Dawley Internal medicine Animals Medicine media_common Motivation Multidisciplinary business.industry Extinction (psychology) Biological Sciences Abstinence Magnetic Resonance Imaging Corpus Striatum Rats Substance Withdrawal Syndrome Analgesics Opioid Endocrinology Opioid Food craving Orbitofrontal cortex medicine.symptom business Oxycodone psychological phenomena and processes medicine.drug |
| Zdroj: | Proc Natl Acad Sci U S A |
| ISSN: | 1091-6490 0027-8424 |
| DOI: | 10.1073/pnas.2106624118 |
| Popis: | We recently introduced a rat model of incubation of opioid craving after voluntary abstinence induced by negative consequences of drug seeking. Here, we used resting-state functional MRI to determine whether longitudinal functional connectivity changes in orbitofrontal cortex (OFC) circuits predict incubation of opioid craving after voluntary abstinence. We trained rats to self-administer for 14 d either intravenous oxycodone or palatable food. After 3 d, we introduced an electric barrier for 12 d that caused cessation of reward self-administration. We tested the rats for oxycodone or food seeking under extinction conditions immediately after self-administration training (early abstinence) and after electric barrier exposure (late abstinence). We imaged their brains before self-administration and during early and late abstinence. We analyzed changes in OFC functional connectivity induced by reward self-administration and electric barrier–induced abstinence. Oxycodone seeking was greater during late than early abstinence (incubation of oxycodone craving). Oxycodone self-administration experience increased OFC functional connectivity with dorsal striatum and related circuits that was positively correlated with incubated oxycodone seeking. In contrast, electric barrier–induced abstinence decreased OFC functional connectivity with dorsal striatum and related circuits that was negatively correlated with incubated oxycodone seeking. Food seeking was greater during early than late abstinence (abatement of food craving). Food self-administration experience and electric barrier–induced abstinence decreased or maintained functional connectivity in these circuits that were not correlated with abated food seeking. Opposing functional connectivity changes in OFC with dorsal striatum and related circuits induced by opioid self-administration versus voluntary abstinence predicted individual differences in incubation of opioid craving. |
| Databáze: | OpenAIRE |
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