Synaptic depression via mGluR1 positive allosteric modulation suppresses cue-induced cocaine craving.
Synaptic depression via mGluR1 positive allosteric modulation suppresses cue-induced cocaine craving.
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DOI:
10.1038/nn.3590
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发表时间:
2014-01
影响因子:
25
通讯作者:
Wolf ME
中科院分区:
文献类型:
--
作者:
Loweth JA;Scheyer AF;Milovanovic M;LaCrosse AL;Flores-Barrera E;Werner CT;Li X;Ford KA;Le T;Olive MF;Szumlinski KK;Tseng KY;Wolf ME
Cue-induced cocaine craving is a major cause of relapse in abstinent addicts. In rats, cue-induced craving progressively intensifies (incubates) during withdrawal from extended-access cocaine self-administration. After ~1 month of withdrawal, incubated craving is mediated by Ca2+-permeable AMPARs (CP-AMPARs) that accumulate in the nucleus accumbens (NAc). We found that decreased mGluR1 surface expression in the NAc precedes and enables CP-AMPAR accumulation. Thus, restoring mGluR1 tone by administering repeated injections of an mGluR1 positive allosteric modulator (PAM) prevented CP-AMPAR accumulation and incubation, whereas blocking mGluR1 transmission at even earlier withdrawal times accelerated CP-AMPAR accumulation. In studies conducted after prolonged withdrawal, when CP-AMPAR levels and cue-induced craving are high, we found that systemic administration of an mGluR1 PAM attenuated the expression of incubated craving by reducing CP-AMPAR transmission in the NAc to control levels. These results demonstrate a strategy whereby recovering addicts could use a systemically active compound to protect against cue-induced relapse.
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通讯作者:
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影响因子:
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通讯作者:
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