使用Bifidobacterium bifidum和益生菌的协生干预减少了肠道出血性大肠杆菌的殖民化
Wanqiu Sha1,2, Anqi Su1, Hong Cheng1
1Department of Laboratory Medicine, Xiamen Key Laboratory of Perinatal-Neonatal Infection, State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedical Laboratory, Women and Children's Hospital, School of Medicine and School of Public Health, Xiamen University, Xiamen, Fujian Province, China.
Letters in applied microbiology
|February 4, 2026
概括
这项研究表明,一种结合Bifidobacterium bifidum与异-寡糖 (IMO) 的共生药物在小鼠中有效降低了肠出血性大肠杆菌 (EHEC). 这种组合调节肠道生态系统,以防止食源性感染.
科学领域:
- 微生物学和免疫学
- 肠道微生物组研究研究
- 控制食物传播病原体的控制
背景情况:
- 肠出血性大肠杆菌 (EHEC) 构成严重的公共卫生风险.
- 益生菌和益生菌 (共生菌) 显示出预防胃肠道感染的潜力.
- 了解对EHEC的共生疗效机制至关重要.
研究的目的:
- 评估Bifidobacterium bifidum与益生菌相结合对EHEC感染的保护作用.
- 用体外和体外模型研究共生作用的潜在机制.
- 为了确定最佳的益生菌成分来增强B. bifidum的保护能力.
主要方法:
- 在体外对10种益生菌进行查,以检测它们促进B. bifidum生长和代谢物产生的能力.
- 评估B. bifidum粘附于肠道细胞 (Caco-2) 在特定益生菌的存在下.
- 在体内验证使用EHEC感染的小鼠模型来评估共生疗效和殖民减少.
主要成果:
- 异黄糖 (IMO) 和胰岛素被确定为最佳的益生菌,显著增强了B. bifidum的增殖和酸盐的产生.
- IMO显著增加了B. bifidum对Caco-2细胞的附着性.
- 结合B. bifidum和IMO显著抑制了小鼠的EHEC殖民,特别是在结肠 (减少5倍),而胰岛素没有提供额外的益处.
结论:
- 一种基于IMO的共生菌通过调节肠道生态系统,有效地限制了EHEC殖民.
- 保护机制可能涉及局部代谢物递送或微生物相互作用,而不是大量的酸盐生产.
- 这项研究提供了一个合理的框架,用于设计抗食物感染的共生菌.
相关概念视频
The Colonization of Land
37.7K
Changes in the environment of the early Earth drove the evolution of organisms. As prokaryotic organisms in the oceans began to photosynthesize, they produced oxygen. Eventually, oxygen saturated the oceans and entered the air, resulting in an increase in atmospheric oxygen concentration, known as the oxygen revolution approximately 2.3 billion years ago. Therefore, organisms that could use oxygen for cellular respiration had an advantage. More than 1.5 years ago, eukaryotic cells and...
37.7K
Nursing Interventions I: Taxonomy of Nursing Interventions
3.9K
Nursing interventions are chosen as part of the planning process to achieve patient outcomes. Once nursing diagnoses are determined, the goals and outcomes are specified, then the nursing interventions are selected and individualized according to the patient's situation.
A nursing intervention is a treatment or action based on scientific concepts and knowledge from the nursing, behavioral, and physical sciences. Identifying and prioritizing nursing interventions based on the desired outcome...
A nursing intervention is a treatment or action based on scientific concepts and knowledge from the nursing, behavioral, and physical sciences. Identifying and prioritizing nursing interventions based on the desired outcome...
3.9K
Nursing Interventions II: Selecting and Classifying the Nursing Interventions
3.3K
Creating and executing a nursing diagnosis helps nurses plan care and guide patient, family, and community interventions. They are developed based on a patient's physical evaluation and support measuring the outcomes. It is not recommended to select random interventions throughout the planning process. Instead, consider the following six essential factors when choosing interventions:
3.3K
Community Based Intervention
483
Community-based interventions in mental health represent a paradigm shift from institution-centered care to treatments embedded within the fabric of local communities. By prioritizing inclusion and leveraging existing societal structures, this approach fosters a supportive environment conducive to addressing mental health challenges while promoting individual dignity and agency.
Foundations of Community Mental Health Programs
Central to the success of community-based interventions is the...
Foundations of Community Mental Health Programs
Central to the success of community-based interventions is the...
483
Reducing Line Loss
390
In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss in...
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss in...
390
Operant Conditioning Intervention
512
Operant conditioning serves as a foundational principle in therapeutic interventions aimed at modifying maladaptive behaviors. Central to this approach is the notion that behaviors, both adaptive and maladaptive, are learned through reinforcement. By analyzing the environmental factors that reinforce problematic behaviors, clinicians can design interventions to weaken these reinforcements and replace maladaptive behaviors with healthier alternatives.
In operant conditioning, behaviors that are...
In operant conditioning, behaviors that are...
512


