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首页> 外文期刊>Physiology & behavior >Tail skin temperatures reflect coping styles in rats.
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Tail skin temperatures reflect coping styles in rats.

机译：尾巴皮肤温度反映了大鼠的应对方式。

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This study was carried out to elucidate the predictive value of tail skin temperatures (TSTs) assessed in naive rats as a non-invasive pre-experimental method of classification of coping style. Male Lewis rats were classified according to tail skin temperatures (TST), and relative size within cage-groups. TSTs were monitored over two-hour periods following exposure to physical and emotional stressors. Bodyweight-shifts associated to the experiments were analysed. Six organs of neuroendocrine relevance to allostasis were weighed. Challenge-specific TST-profiles were size-related and consistent with proactive or reactive coping. Pro-active (A) rats showed a more pronounced TST-response to unknown conspecifics, but reactive (B) rats to environmental novelties. B-rats showed challenge-specific weight-losses while A-rats gained more after experiments. Second size males showed rapidly decreased TSTs (vasoconstriction) after nociceptive stimulation. Males that showed the highest basal TSTs and weight-loss in emotionality tests had lost a first rank position during a pre-experimental period, suggesting long-lasting effects of social defeat. Pre-experimental growth correlated positively to adiposisity post-experimentally, but negatively to testes relative weight in B-rats. Scaling effects explained heart-size in B-rats and pituitary-size in A-rats. The overall patterns that emerged, in factor analyses including organ sizes, were consistent with pro-active coping in A-rats and reactive in B-rats. Our results, controlling for rank-effects, suggest that non-invasively assessed TSTs may predict individual stress-coping phenotypes pre-experimentally in rats housed in groups.
机译：进行这项研究以阐明在幼稚大鼠中评估的尾巴皮肤温度（TST）的预测价值，作为应对方式分类的一种非侵入性实验前方法。根据尾巴皮肤温度（TST）以及笼组内的相对大小对雄性Lewis大鼠进行分类。在暴露于生理和情绪应激源后的两个小时内，对TST进行了监控。分析与实验相关的体重变化。称重了六个与神经内分泌相关的神经内分泌器官。特定于挑战的TST轮廓与尺寸有关，并与主动或被动应对相一致。主动型（A）大鼠对未知的同种体表现出更明显的TST反应，而活性型（B）对环境新奇的大鼠表现出更明显的TST反应。 B-大鼠表现出挑战特定的减肥效果，而A-大鼠在实验后获得更多的减肥效果。伤害刺激后，中等身材的男性表现出TST（血管收缩）迅速降低。在情绪测试中显示出最高的基础TST和体重减轻的男性在实验前时期失去了头等位置，这表明社交失败的持久影响。实验前的生长与实验后的脂肪形成呈正相关，但与B大鼠的睾丸相对重量呈负相关。缩放效应解释了B鼠的心脏大小和A鼠的垂体大小。在因素分析中出现的总体模式，包括器官大小，与A-大鼠的积极应对和B-大鼠的积极应对相一致。我们的结果（控制等级效应）表明，无创评估的TSTs可以在成群饲养的大鼠中预先实验性地预测个体的应激反应表型。

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