Sleep restriction during opioid abstinence affects the hypothalamic-pituitary-adrenal (HPA) axis in male and female rats.

IF 2.6 4区 心理学 Q2 BEHAVIORAL SCIENCES
Hershel Raff, Breanna L Glaeser, Aniko Szabo, Christopher M Olsen, Carol A Everson
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引用次数: 0

Abstract

Hypothalamic-pituitary-adrenal (HPA) axis dynamics are disrupted by opioids and may be involved in substance abuse; this persists during withdrawal and abstinence and is associated with co-morbid sleep disruption leading to vulnerability to relapse. We hypothesized that chronic sleep restriction (SR) alters the HPA axis diurnal rhythm and the sexually dimorphic response to acute stressor during opioid abstinence. We developed a rat model to evaluate the effect of persistent sleep loss during opioid abstinence on HPA axis dynamics in male and female rats. Plasma ACTH and corticosterone were measured diurnally and in response to acute restraint stress in rats Before (control) compared to During subsequent opioid abstinence without or with SR. Abstinence, regardless of sleep state, led to an increase in plasma ACTH and corticosterone in the morning in males. There was a tendency for higher PM plasma ACTH during abstinence in SR males (p = 0.076). ACTH and corticosterone responses to restraint were reduced in male SR rats whereas there was a failure to achieve the post-restraint nadir in female SR rats. There was no effect of the treatments or interventions on adrenal weight normalized to body weight. SR resulted in a dramatic increase in hypothalamic PVN AVP mRNA and plasma copeptin in male but not female rats. This corresponded to the attenuation of the HPA axis stress response in SR males during opioid abstinence. We have identified a potentially unique, sexually dimorphic role for magnocellular vasopressin in the control of the HPA axis during opioid abstinence and sleep restriction.

阿片类药物戒断期间的睡眠限制会影响雄性和雌性大鼠的下丘脑-垂体-肾上腺(HPA)轴。
阿片类药物会扰乱下丘脑-垂体-肾上腺(HPA)轴的动态平衡,并可能与药物滥用有关;这种情况在戒断和禁欲期间会持续存在,并与共病睡眠障碍有关,从而导致容易复发。我们假设,在阿片类药物戒断期间,慢性睡眠限制(SR)会改变 HPA 轴的昼夜节律和对急性应激源的性双态反应。我们建立了一个大鼠模型,以评估阿片类药物戒断期间持续睡眠不足对雄性和雌性大鼠 HPA 轴动态的影响。我们测量了大鼠昼夜间的促肾上腺皮质激素(ACTH)和皮质酮(Corticosterone)含量,以及对急性束缚应激的反应。无论睡眠状态如何,禁欲都会导致雄性大鼠早晨血浆促肾上腺皮质激素和皮质酮的增加。在戒断期间,SR 男性的下午血浆促肾上腺皮质激素呈上升趋势(p = 0.076)。雄性 SR 大鼠对束缚的促肾上腺皮质激素和皮质酮反应降低,而雌性 SR 大鼠未能达到束缚后的最低点。治疗或干预对肾上腺重量与体重的正常值没有影响。SR 导致雄性大鼠下丘脑 PVN AVP mRNA 和血浆 copeptin 的急剧增加,而雌性大鼠则没有。这与SR雄性大鼠在阿片类药物戒断期间HPA轴应激反应的减弱相对应。我们发现了镁细胞血管加压素在阿片类药物戒断和睡眠限制期间控制 HPA 轴的潜在独特性双态作用。
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来源期刊
CiteScore
5.60
自引率
0.00%
发文量
25
审稿时长
6-12 weeks
期刊介绍: The journal Stress aims to provide scientists involved in stress research with the possibility of reading a more integrated view of the field. Peer reviewed papers, invited reviews and short communications will deal with interdisciplinary aspects of stress in terms of: the mechanisms of stressful stimulation, including within and between individuals; the physiological and behavioural responses to stress, and their regulation, in both the short and long term; adaptive mechanisms, coping strategies and the pathological consequences of stress. Stress will publish the latest developments in physiology, neurobiology, molecular biology, genetics research, immunology, and behavioural studies as they impact on the understanding of stress and its adverse consequences and their amelioration. Specific approaches may include transgenic/knockout animals, developmental/programming studies, electrophysiology, histochemistry, neurochemistry, neuropharmacology, neuroanatomy, neuroimaging, endocrinology, autonomic physiology, immunology, chronic pain, ethological and other behavioural studies and clinical measures.
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