在植物细胞培养中产生的不溶性多糖化合物可以保护人免受Clostridioides difficile colitis的感染
Giulia Bernabè1, Ignazio Castagliuolo2, Andrea Porzionato3
1University of Padova, Department of Molecular Medicine via A. Gabelli, 63, Padova 35121, Italy.
Microbiological research
|July 2, 2024
概括
一种新型的植物性多糖,ABR119,有效地捕获Clostridioides difficile毒素,减少炎症并防止动物模型的体重减轻. 这种毒素结合方法为治疗复发性C. difficile感染提供了一个有希望的替代方案.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 药理学 药理学是指药理学的学科.
背景情况:
- 困难菌感染 (CDI) 的复发率很高,通常由抗生素诱导的肠道失调症加剧.
- 抗生素破坏了肠道微生物群,促进了C. difficile子的发芽和毒素的产生,这是CDI毒性的关键因素.
- 毒素吸附是一种潜在的治疗策略,可以减轻CDI的复发和严重程度.
研究的目的:
- 评估ABR119,一种天然不溶性多糖在捕获C. difficile毒素中的有效性.
- 评估ABR119在C. difficile相关性结肠炎的动物模型中的安全性和治疗潜力.
主要方法:
- 在体外评估ABR119结合C. difficile毒素的能力.
- 在体外细胞毒性测定和体内动物模型安全性评估.
- 在C. difficile相关性结肠炎小鼠模型中使用ABR119测量炎症标志物和体重变化.
- 与小麦多糖的比较和ABR119对抗生素疗效的影响的评估.
主要成果:
- 在实验室中,ABR119有效地捕获了C. difficile毒素,但没有表现出细胞毒性.
- 在体内,ABR119 (50 mg/kg) 显著降低了结肠髓氧化酶活性和炎症严重程度,防止体重减轻.
- 小麦的多糖并没有产生类似的保护作用.
- ABR119没有对C. difficile或肠道微生物群的直接杀菌活性,也没有干扰大多数临床抗生素.
结论:
- 通过中和细菌毒素,ABR119显示出作为治疗和预防C. difficile结肠炎的安全有效治疗剂的潜力.
- ABR119的毒素吸收机制为治疗CDI,特别是复发病例的常规抗生素提供了一个有希望的替代方案.
- 需要进一步的研究来探索ABR119在人类C. difficile感染中的临床实用性.
相关概念视频
Cellulose and Pectic Polysaccharides
3.5K
Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
As a cell matures, its cell wall specializes according to its type. For example, the...
3.5K
Plant Cell Wall
56.5K
The plant cell wall gives plant cells shape, support, and protection. As a cell matures, its cell wall specializes according to the cell type. For example, the parenchyma cells of leaves possess only a thin, primary cell wall.
56.5K
Role of Microtubules in Cell Wall Deposition
2.4K
Microtubules are small hollow tubes in eukaryotic cells. The cell wall microtubules are polymerized dimers of two globular proteins, α-tubulin and β-tubulin, two globular proteins. With a diameter of about 25 nm, microtubules are the widest components of the cytoskeleton. They help the cell resist compression and provide a track along which vesicles move through the cell or pull replicated chromosomes to opposite ends of a dividing cell. Microtubules go through quick cycles of...
2.4K
Introduction to Plant Diversity
44.6K
From Water to Land
44.6K


