Research Component 1 - Neuroimmune Signaling in Networks Underlying Chronic Etha

该ARC提案检验了反复酗酒(REB)的假设。 持续改变神经免疫信号，改变额叶皮质、杏仁核神经元的激活 (AMYG)、腹侧纹状体(VS，伏隔核)和海马区(Hip)。 酒精依赖的精神病理学。上一个供资周期的进展发现 神经免疫信号是通过REB改变与成瘾一致的行为而激活的。布里斯进展 与酒精循环、应激源和/或脑内注射神经免疫激动剂有关的AMYG 社会互动，一种负面情绪的指数。并行的。工作人员发现REB诱导神经免疫 通过胶质细胞NFKB转录趋化因子、细胞因子、Toll样受体(TLR)和TLR HMGB1激动剂，可长期戒断并促进神经退行性变和逆转 学习认知缺陷。在尸检中也发现神经免疫蛋白表达增加 人类酗酒的大脑。这些实验室是此续订组件的合作伙伴。REB引起的变化 使用CFOS和Zif268标记物的神经元激活(Aim 1)将与神经免疫力的增加有关 在REB戒断期间，FC、AMIG、VS和HIP内的信号(目标2)。这些大脑区域是 与酒精依赖中发生的持续酒精诱导的唤醒有关。 光遗传学将研究FC电路的变化。纳曲酮、米诺环素和基因敲除小鼠将进行测试 神经免疫诱导和神经元激活改变之间的因果关系(目标3)以及 成瘾相关行为(目标4)。这些实验将增进对分子和 酒精致脑病理的细胞机制。乙醇诱导的神经免疫激活可以 成为成瘾神经生物学的核心，并转化为新的治疗方法。ARC扩大了范围并 加强拟议的实验，增加关于暴饮暴食引起的改变的相关研究 神经回路、类成瘾行为和信号机制。

This ARC proposal tests the hypothesis that repeated ethanol binges (REB) persistently change neuroimmune signaling that alters neuronal activation in frontal cortical (FC), amygdala (Amyg), ventral striatum (VS, nucleus accumbens) and hippocampus (Hip) that contributes to the psychopathology of alcohol dependence. Progress in the previous funding cycle discovered that neuroimmune signals are activated by REB altering behavior consistent with addiction. Breese progress linked ethanol cycles, stressors and/or brain injection of neuroimmune agonists into Amyg with decreased social interaction, an index of negative affect. In parallel. Crews discovered REB induces neuroimmune genes through glial NFKB transcription of chemokines, cytokines, toll-like receptors (TLR) and the TLR agonist HMGB1 that persist for long periods of abstinence and contribute to neurodegeneratlon and reversal learning cognitive deficits. Increased neuroimmune protein expression was also discovered in post-mortem human alcoholic brain. These labs partner within this renewal component. REB induced changes in neuronal activation using cfos and Zif268 markers (Aim 1) will be related to increases in neuroimmune signals (Aim 2) within FC, Amyg, VS and Hip during abstinenece following REB. These brain regions are networked and associated with the persistent alcohol induced arousal that occurs in alcohol dependence. Optogenetics will investigate changes in FC circuits. Naltrexone, minocycline and knock out mice will test causal relationships between neuroimmune induction and altered neuronal activation (Aim 3) as well as addiction related behaviors (Aim 4). These experiments will enhance understanding of the molecular and cellular mechanisms of alcohol induced brain pathology. Ethanol induced neuroimmune activation could become central to the neurobiology of addiction and translate to new treatments. The ARC broadens and strengthens the proposed experiments with additional related studies on binge induced alterations in neurocircuits, addiction-like behaviors and signaling mechanisms.