Corticosteroid sensitization drives opioid addiction.

Corticosteroid sensitization drives opioid addiction.
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皮质类固醇致敏会导致阿片类药物成瘾。

DOI:
10.1038/s41380-022-01501-1
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发表时间:
2022-05
影响因子:
11
通讯作者:
Vendruscolo, Leandro F.
Vendruscolo, Leandro F.
中科院分区:
医学1区
文献类型:
--
作者:
Carmack, Stephanie A.;Vendruscolo, Janaina C. M.;McGinn, M. Adrienne;Miranda-Barrientos, Jorge;Repunte-Canonigo, Vez;Bosse, Gabriel D.;Mercatelli, Daniele;Giorgi, Federico M.;Fu, Yu;Hinrich, Anthony J.;Jodelka, Francine M.;Ling, Karen;Messing, Robert O.;Peterson, Randall T.;Rigo, Frank;Edwards, Scott;Sanna, Pietro P.;Morales, Marisela;Hastings, Michelle L.;Koob, George F.;Vendruscolo, Leandro F.

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全球阿片类药物过量死亡危机促使人们紧急寻找阿片类药物使用障碍(OUD)的神经生物学机制。 OUD 的驱动力是急性和长期阿片类药物戒断期间产生的烦躁和情绪痛苦状态(过度兴奋)。在这里,我们探讨了下丘脑外应激系统在驱动阿片类药物成瘾中的机制作用。我们发现,米非司酮的糖皮质激素受体(GR)拮抗作用可减少大鼠和斑马鱼的阿片成瘾样行为,并减少大鼠杏仁核中促肾上腺皮质激素释放因子神经元(即大脑应激系统激活的标志物)的放电。为了支持糖皮质激素转录调节下丘脑外 GR 在成瘾样行为中的假设作用,杏仁核内注射阻断 GR 转录活性的反义寡核苷酸可减少成瘾样行为。最后,我们发现了 OUD 人类杏仁核中 GR 信号传导的转录适应。因此,GR、其核心调节器和下游系统可能代表治疗 OUD“应激面”的可行治疗靶点。
The global crisis of opioid overdose fatalities has led to an urgent search to discover the neurobiological mechanisms of opioid use disorder (OUD). A driving force for OUD is the dysphoric and emotionally painful state (hyperkatifeia) that is produced during acute and protracted opioid withdrawal. Here, we explored a mechanistic role for extrahypothalamic stress systems in driving opioid addiction. We found that glucocorticoid receptor (GR) antagonism with mifepristone reduced opioid addiction-like behaviors in rats and zebrafish of both sexes and decreased the firing of corticotropin-releasing factor neurons in the rat amygdala (i.e., a marker of brain stress system activation). In support of the hypothesized role of glucocorticoid transcriptional regulation of extrahypothalamic GRs in addiction-like behavior, an intra-amygdala infusion of an antisense oligonucleotide that block GR transcriptional activity reduced addiction-like behaviors. Finally, we identified transcriptional adaptations of GR signaling in the amygdala of humans with OUD. Thus, GRs, their coregulators and downstream systems may represent viable therapeutic targets to treat the “stress side” of OUD.
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