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Adolescent intermittent ethanol exposure does not alter responsiveness to ifenprodil or expression of vesicular GABA and glutamate transporters
Developmental Psychobiology ( IF 2.2 ) Pub Date : 2021-01-28 , DOI: 10.1002/dev.22099
Carol A Dannenhoffer 1 , David F Werner 2 , Elena I Varlinskaya 2 , Linda P Spear 2
Affiliation  

Adolescent intermittent ethanol (AIE) exposure in the rat results in a retention of adolescent-like responsiveness to ethanol into adulthood characterized by enhanced sensitivity to socially facilitating and decreased sensitivity to socially suppressing and aversive effects. Similar pattern of responsiveness to social and aversive effects of the selective glutamate NMDA NR2B receptor antagonist ifenprodil is evident in adolescent rats, suggesting that AIE would also retain this pattern of ifenprodil sensitivity into adulthood. Social (Experiment 1) and aversive (measured via conditioned taste aversion; Experiment 2) effects of ifenprodil were assessed in adult male and female rats following AIE exposure. Sensitivity to the social and aversive effects of ifenprodil was not affected by AIE exposure. Experiment 3 assessed protein expression of vesicular transporters of GABA (vGAT) and glutamate (vGlut2) within the prelimbic cortex and nucleus accumbens in adolescents versus adults and in AIE adults versus controls. vGlut2 expression was higher in adolescents relative to adults within the PrL, but lower in the NAc. AIE adults did not retain these adolescent-typical ratios. These findings suggest that AIE is not associated with the retention of adolescent-typical sensitivity to NR2B receptor antagonism, along with no AIE-induced shift in vGlut2 to vGAT ratios.

中文翻译:

青少年间歇性乙醇暴露不会改变对艾芬地尔的反应或囊泡 GABA 和谷氨酸转运蛋白的表达

大鼠中的青少年间歇性乙醇 (AIE) 暴露导致青少年对乙醇的反应保持到成年期,其特征是对社会促进的敏感性增强,对社会抑制和厌恶影响的敏感性降低。对选择性谷氨酸 NMDA NR2B 受体拮抗剂艾芬地尔的社交和​​厌恶作用的类似反应模式在青春期大鼠中很明显,这表明 AIE 也会将这种艾芬地尔敏感性模式保留到成年期。在 AIE 暴露后,在成年雄性和雌性大鼠中评估了艾芬地尔的社会(实验 1)和厌恶(通过条件性味觉厌恶测量;实验 2)影响。对艾芬地尔的社交和​​厌恶作用的敏感性不受 AIE 暴露的影响。实验 3 评估了青少年与成人以及 AIE 成人与对照组的前肢皮层和伏隔核内 GABA (vGAT) 和谷氨酸 (vGlut2) 的囊泡转运蛋白的蛋白质表达。相对于 PrL 内的成年人,青少年的 vGlut2 表达较高,但在 NAc 中较低。AIE 成人没有保留这些典型的青少年比例。这些发现表明,AIE 与保持青少年对 NR2B 受体拮抗作用的典型敏感性无关,也没有 AIE 诱导的 vGlut2 与 vGAT 比率的变化。AIE 成人没有保留这些典型的青少年比例。这些发现表明,AIE 与保持青少年对 NR2B 受体拮抗作用的典型敏感性无关,也没有 AIE 诱导的 vGlut2 与 vGAT 比率的变化。AIE 成人没有保留这些典型的青少年比例。这些发现表明,AIE 与保持青少年对 NR2B 受体拮抗作用的典型敏感性无关,也没有 AIE 诱导的 vGlut2 与 vGAT 比率的变化。
更新日期:2021-01-28
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