补充β-葡萄糖对马匹LPS诱导的内毒素的作用
Milena Domingues Lacerenza1, Júlia de Assis Arantes1, Gustavo Morandini Reginato1
1Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of Sao Paulo (USP), Pirassununga 13635-900, Brazil.
Animals : an open access journal from MDPI
|February 10, 2024
概括
预防性补充β-葡萄糖 (β-葡萄糖) 在马群中调节了免疫反应,增加了血清蛋白,改变了腹膜炎症细胞. 然而,它并没有显著减少内毒性病的临床症状.
科学领域:
- 兽医免疫学 兽医免疫学
- 马类医学 马类医学
- 免疫营养 免疫营养 免疫营养
背景情况:
- β-葡萄糖 (β-glucan) 是真菌细胞壁的一个组成部分,以其免疫调节特性而闻名.
- 虽然它在毒症的老鼠模型中有效,但它在马体内毒性病的作用尚未评估.
- 马中的内毒素,通常是由脂多糖类引起的,触发了显著的炎症反应.
研究的目的:
- 为了评估预防性口服β-葡萄糖补充剂对引起内毒性病症的马的炎症反应调节的影响.
- 评估β-葡萄糖在内毒性病期间对临床症状,血液学,血清生物化学和细胞因子概况的影响.
主要方法:
- 八匹健康的马被分为两组:β-葡萄糖 (GB) 和对照 (GC).
- 马在静脉注射前30天每天接受口服β-葡萄糖 (10毫克/公斤) 或盐水剂. 大肠杆菌的脂多糖 (0.1μg/kg) 诱导.
- 评估包括体检,血液学,血清生物化学,腹膜液分析和血清细胞因子量化 (TNF-α,IL-6,IL-8,IL-10).
主要成果:
- 这两组都表现出内毒性病的临床和血液学迹象,包括心率,温度和炎症性细胞因子 (TNF-α,IL-6,IL-10) 的增加.
- 补充β-葡萄糖增加了血清总蛋白质,血球蛋白和IL-8.
- 补充β-葡萄糖的马体中中性粒细胞减少,巨细胞增加,对肝或功能没有不良影响.
结论:
- 30天的预防性β-葡萄糖补充剂调节了马匹的免疫反应,由增加的血清蛋白,IL-8和改变的腹炎症细胞简介证明.
- 在这项研究中,β-葡萄糖没有减轻内毒性病的临床表现.
- 安全性概况表明β-葡萄糖在治疗马体内毒性病的预防性使用的潜力.
相关概念视频
Formation of Lipopolysaccharides
Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin, triggering...
Bacterial Toxins
Bacterial toxins are sophisticated virulence factors that enable pathogenic bacteria to interact with, invade, and damage host tissues. These toxins fall broadly into two types: protein exotoxins, which are secreted into the environment and target specific host receptors, and lipopolysaccharide endotoxins, which are structural components of the bacterial outer membrane released primarily during bacterial lysis or membrane shedding. Exotoxins generally act more selectively, binding to cell...


