夏季放牧的马的分子和细胞评估与喘综合征相关
Eliene Porto Sad1, Tanja M Hess2, Huarrisson Azevedo Santos3
1Universidade Iguaçu, Nova Iguacu, RJ, Brazil.
Journal of equine veterinary science
|September 20, 2023
概括
马类喘涉及Th2细胞因子的增加,特别是IL-5,这表明牧场马的过敏反应. 瘤亡因子-α (TNF-α) 的下调,表明慢性抗原反应.
科学领域:
- 马的呼吸道疾病 马的呼吸道疾病
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 马类喘对马业产生重大影响,但其病因和牧场相关病例的分子方面尚不清楚.
- 了解牧场相关的马类喘对于管理这种普遍的呼吸系统疾病至关重要.
研究的目的:
- 在牧场养殖的患有马类喘的马中鉴定下呼吸道炎症的特征.
- 分析细胞学和免疫学概况,包括关键细胞因子的基因表达,在支气管支气管洗液 (BAL) 中.
- 在热带环境中的牧场上区分健康和喘马.
主要方法:
- 评估了39匹临床上健康的牧场马,补充了缩剂.
- 收集的支气管支气管洗液 (BAL) 液体用于差异细胞计数.
- 使用RT-PCR分析了促炎性 (IL-1α,TNF-α) 和Th1/Th2细胞因子 (IFN-λ,IL-8,IL-4,IL-5) 的基因表达.
主要成果:
- 与健康对照组相比,喘马在BAL液中表现出更高的IL-1,IL-4,IL-5,IL-8和IFN-λ的基因表达.
- 在喘马中观察到IL-5 (Th2细胞因子) 的显著增加,证实了过敏炎症反应.
- 瘤亡因子-α (TNF-α) 是喘组中唯一下调的细胞因子,表明慢性抗原反应.
结论:
- 牧场相关的马类喘的特征是Th2细胞因子的增加,表明过敏炎症过程.
- 升高的IL-5水平是喘马的过敏反应的关键标志物.
- 降低TNF-α的调节可能表明在马类喘中存在慢性抗原暴露.
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