实验动物与比较医学 ›› 2016, Vol. 36 ›› Issue (4): 257-262.DOI: 10.3969/j.issn.1674-5817.2016.04.003

• 论著 • 上一篇    下一篇

小鼠慢性应激性抑郁症易感品系筛选及其机制初步研究

徐龙进1, 王可洲2   

  1. 1.山东省疾病预防控制中心, 济南 250014;
    2.山东省实验动物中心, 济南 250011
  • 收稿日期:2016-05-30 出版日期:2016-08-25 发布日期:2016-08-25
  • 作者简介:徐龙进(1973-), 男, 博士, 副主任技师, 主要研究方 向: 实验动物管理。E-mail: sdxulongjin@163.com
  • 基金资助:
    国家自然科学基金(31171219)

Screening of Mouse Strain Susceptive to Chronic Stress Depression and Preliminary Research on Its Mechanism

XU Long-jin, WANG Kou-zhou   

  1. 1. Shandong Center for Disease Control and Prevention, Ji’nan, 250014 , China;;
    2. Laboratory Animal Center of Shandong Province, Ji’nan, 250011, China
  • Received:2016-05-30 Online:2016-08-25 Published:2016-08-25

摘要: 目的 筛选对慢性、轻度不可预见性应激(CUMS)敏感的小鼠品系,并初步研究其敏感机制。方法 选用KM、ICR 、BABL/c、C57BL/6小鼠建立CUMS抑郁模型,通过体质量、糖水偏好、旷场实验得分考察不同品系小鼠对CUMS的敏感性。通过对小鼠海马组织糖皮质激素受体(GR)、5-羟色胺(5-HT)、犬尿氨酸(KYN)含量的测定, 对其易感机制进行初步研究。结果 造模后C57BL/6小鼠体质量、糖水偏好、旷场实验水平运动和垂直运动得分等指标均对CUMS表现出显著敏感性,BABL/c小鼠对糖水偏好、旷场实验水平运动和垂直运动得分较为敏感。对照组C57BL/6小鼠海马组织GR、KYN含量与其他三种小鼠存在显著差异。结论 在筛选的4个品系小鼠中,C57BL/6 小鼠对CUMS最为敏感,适于建立CUMS抑郁症动物模型,其敏感机制可能与海马组织GR、KYN含量有关。

关键词: 小鼠, 慢性应激, 易感品系, 机制

Abstract: Objective To screen mouse strain that susceptive to chronic unpredicted mild stress(CUMS) and preliminarily research its susceptive mechanism. Methods KM, ICR, BABL/c and C57BL/6 mice were used to establish CUMS depression model. Body weight, sucrose preference test(SPT), open field test (OFT) were used to evaluate the sensitivity of mice to CUMS. Hippocampal levels of glucocorticoid reccptor (GR), 5-hydroxytryptamine(5-HT), kynurenine(KYN) were measured and used for susceptive mechanism research. Results Body weight, SPT, horizontal movement score and vertical movement score of C57BL/6 mice were found to susceptive to CUMS. SPT, horizontal movement score and vertical movement score of BABL/c showed similar tendency. Hippocampal levels of GR and KYN of normal C57BL/6 mice were significantly lower or higher than that of normal KM, ICR and BABL/c mice. Conclusions The C57BL/6 mouse is most susceptive to CUMS among 4 strains tested, and hippocampal levels of GR and KYN may be the main mechanism responsible for its susceptibility.

Key words: Mouse, Chronic stress, Susceptive strain, Mechanism

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