复合抗微生物对荷尔斯泰因杆菌中结肠微生物群和屏障完整性的作用
Yongzhi Cao1, Yue Ma1, Yongliang Huang1
1College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China.
Probiotics and antimicrobial proteins
|November 4, 2025
概括
抗微生物 (APs) 通过促进有益的细菌和增加肠道健康来增强霍尔斯坦牛的肠道屏障功能. 这项研究表明,AP可以改善肠道微生物群和牲畜的完整性.
科学领域:
- 动物科学动物科学
- 微生物学 微生物学
- 胃肠病学 胃肠病学
背景情况:
- 抗微生物 (APs) 对于抗菌性质和耐药性低的风险,在牲畜中至关重要.
- 它们对反动物肠道屏障功能的影响尚未得到充分研究.
研究的目的:
- 为了研究复合APs对荷尔斯坦牛的结肠微生物群和屏障完整性的影响.
- 了解AP补充剂如何影响反动物的肠道健康.
主要方法:
- 12只霍尔斯坦牛被食基本饮食或补充AP的饮食270天.
- 分析包括组织学,16S rRNA测序和结肠组织和内容的代谢学.
主要成果:
- APs增加了粘膜厚度,粘素分泌,有益的肠道细菌 (Firmicutes, Ruminococcaceae_UCG-005) 和短链脂肪酸 (乙酸,酸盐,丁酸盐).
- 提升聚合物免疫球蛋白受体 (pIgR) 表达和增强酶活性 (β-葡萄糖酶,脂酶等). 观察到的情况.
- 发现了潜在的致病微生物,α-氨酶活性和免疫球蛋白阳性细胞群的减少.
结论:
- 抗微生物补充剂促进了霍尔斯坦牛的肠道健康.
- APs调节上皮细胞发育和结肠微生物组成,增强屏障功能.
相关概念视频
Surface Membrane Barriers
2.5K
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
2.5K
Antimicrobial Proteins
12.9K
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
12.9K
Antimicrobial Effectiveness
870
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
870


