کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8351293 | 1541865 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chronic methamphetamine treatment induces oxytocin receptor up-regulation in the amygdala and hypothalamus via an adenosine A2A receptor-independent mechanism
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کلمات کلیدی
CPUVDBAoVFCxHYPVMHsupraoptic hypothalamic nucleusAOLBNSTPAGOTRAOMAcb - ACBcaudate-putamen - Caudate-PutamenAmygdala - آمیگدال، بادامهAMY - امیoxytocin - اکسیتوسینThalamus - تالاموسOlfactory tubercle - تومور رحمیperiaqueductal gray - خاکستری پرآبیSol - سلlateral septum - سپتوم جانبیmedial septum - سپتوم داخلیSpinal cord - طناب نخاعیSON - فرزند پسرfrontal cortex - قشر جلوییpiriform cortex - قشر پریکومPVN - مالیات بر ارزش افزودهMethamphetamine - متیل آمفتامینknockout - ناکاوتmap - نقشهwild type - نوع وحشیNucleus accumbens - هسته accumbensbed nucleus of stria terminalis - هسته تخت ترمینال striadorsal raphe nucleus - هسته رافهsolitary tract nucleus - هسته سلول انفرادیparaventricular hypothalamic nucleus - هسته هیپوتالاموس پروژستیکHypothalamus - هیپوتالاموسVentromedial hypothalamus - هیپوتالاموس ونتومدیالolfactory bulb - پیاز بویاییcingulate cortex - کورتکس کانگولتA2A receptor - گیرنده A2Aoxytocin receptor - گیرنده اکسی توسین
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
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چکیده انگلیسی
There is mounting evidence that the neuropeptide oxytocin is a possible candidate for the treatment of drug addiction. Oxytocin was shown to reduce methamphetamine self-administration, conditioned place-preference, hyperactivity and reinstatement in rodents, highlighting its potential for the management of methamphetamine addiction. Thus, we hypothesised that the central endogenous oxytocinergic system is dysregulated following chronic methamphetamine administration. We tested this hypothesis by examining the effect of chronic methamphetamine administration on oxytocin receptor density in mice brains with the use of quantitative receptor autoradiographic binding. Saline (4Â ml/kg/day, i.p.) or methamphetamine (1Â mg/kg/day, i.p.) was administered daily for 10Â days to male, CD1 mice. Quantitative autoradiographic mapping of oxytocin receptors was carried out with the use of [125I]-vasotocin in brain sections of these animals. Chronic methamphetamine administration induced a region specific upregulation of oxytocin receptor density in the amygdala and hypothalamus, but not in the nucleus accumbens and caudate putamen. As there is evidence suggesting an involvement of central adenosine A2A receptors on central endogenous oxytocinergic function, we investigated whether these methamphetamine-induced oxytocinergic neuroadaptations are mediated via an A2A receptor-dependent mechanism. To test this hypothesis, autoradiographic oxytocin receptor binding was carried out in brain sections of male CD1 mice lacking A2A receptors which were chronically treated with methamphetamine (1Â mg/kg/day, i.p. for 10Â days) or saline. Similar to wild-type animals, chronic methamphetamine administration induced a region-specific upregulation of oxytocin receptor binding in the amygdala and hypothalamus of A2A receptor knockout mice and no genotype effect was observed. These results indicate that chronic methamphetamine use can induce profound neuroadaptations of the oxytocinergic receptor system in brain regions associated with stress, emotionality and social bonding and that these neuroadaptations are independent on the presence of A2A receptors. These results may at least partly explain some of the behavioural consequences of chronic methamphetamine use.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pharmacology Biochemistry and Behavior - Volume 119, April 2014, Pages 72-79
Journal: Pharmacology Biochemistry and Behavior - Volume 119, April 2014, Pages 72-79
نویسندگان
Panos Zanos, Sherie R. Wright, Polymnia Georgiou, Ji Hoon Yoo, Catherine Ledent, Susanna M. Hourani, Ian Kitchen, Raphaelle Winsky-Sommerer, Alexis Bailey,