Ethanol induces conditioned social preference in male mice.

Ethanol induces conditioned social preference in male mice.
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DOI:
10.1111/acer.12342
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发表时间:
2014-04
期刊:
Alcoholism, clinical and experimental research
影响因子:
--
通讯作者:
Wood RI
Wood RI
中科院分区:
其他
文献类型:
--
作者:
Kent K;Butler K;Wood RI

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附属的社会互动促进酒精消费,酒精也促进附属行为。此外,对于大多数物种来说,适度剂量的乙醇(EtOH)和社会关系都是有益的。然而,药物和乙醇奖励的动物研究通常是在隔离的情况下测试个体。为了解决EtOH奖励的社会维度,本研究测试了EtOH诱导的雄性C57 BL/6小鼠(ORCHX+T)和无(ORCHX)睾酮的条件社会偏好。ORCHX+T雄性动物接受EtOH(0、1、2或3 g/kg)ip给药,并与2只刺激雄性动物中的1只配对4次,持续30 min:注射生理盐水后与CS刺激雄性动物配对,EtOH后与CS+雄性动物配对。配对后,在10分钟测试中测量与CS+和CS-雄性动物相处的时间。ORCHX+T试验雄性动物对3 g/kg EtOH的反应显示出对CS+雄性动物的条件性偏好(偏好变化:+71.3 ~30.0 sec/10 min,p<0.05),但对0、1或2 g/kg的反应则没有。相比之下,ORCHX雄性动物未表现出对3g/kg EtOH的条件偏好(+16.0 ~24.3 sec/10 min,p>0.05)。在单独的小鼠组中,刺激雄性(IS+)在配对期间接受EtOH,以确定试验小鼠是否更喜欢另一只中毒小鼠。ORCHX+T和ORCHX试验小鼠均显示对IS+小鼠的偏好评分增加(ORCHX+T:+68.1 ~24.0秒,ORCHX:+58.9 ~19.6秒,p<0.05)。这些数据表明,乙醇促进雄性小鼠的社会偏好,因为它在女性。泰诺增强了这种效果。
Affiliative social interactions promote alcohol consumption, and alcohol also promotes affiliative behavior. Furthermore, for most species, moderate doses of ethanol (EtOH) and social affiliation are each rewarding. However, animal studies of drug and EtOH reward typically test individuals in isolation. To address social dimensions of EtOH reward, the present study tested EtOH-induced conditioned social preference in male C57BL/6 mice with (ORCHX+T) and without (ORCHX) testosterone. ORCHX+T males received EtOH (0, 1, 2 or 3g/kg) ip and were paired 4x for 30 min each with 1 of 2 stimulus males: with the CS-stimulus male after saline injection, and with the CS+ male following EtOH. After pairing, time spent with CS+ and CS− males was measured in a 10 min test. ORCHX+T test males showed conditioned preference for the CS+ male in response to 3 g/kg EtOH (change in preference: +71.3±30.0 sec/10 min, p<0.05), but not for 0, 1 or 2g/kg. By contrast, ORCHX males did not demonstrate conditioned preference for 3g/kg EtOH (+16.0±24.3 sec/10 min, p>0.05). In separate groups of mice, stimulus males (IS+) received EtOH during pairing to determine if test mice prefer another intoxicated mouse. Both ORCHX+T and ORCHX test mice showed an increase in preference score for the IS+ mouse (ORCHX+T: +68.1±24.0 sec, ORCHX: +58.9±19.6 sec, p<0.05). These data demonstrate that EtOH promotes social preference in male mice, as it does in females. Testosterone enhances this effect.
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