Clostridium perfringens A型从阿尔帕卡的肠道内容中分离出来的A型
Hongrui Ren1, Qiong Jia1,2, Shuaipeng Gao1
1College of Veterinary Medicine, Shanxi Agricultural University, Jingzhong 030801, China.
Microorganisms
|January 28, 2026
概括
甲型菌被从阿尔帕卡的肠道中分离出来,在小鼠中引起了严重的病理. 这个研究研究这个研究.
科学领域:
- 兽医微生物学 兽医微生物学
- 动物病理学 动物病理学
- 免疫学 免疫学 免疫学
背景情况:
- 克洛斯特里透是一种格拉姆阳性,无氧细菌,会引起人类和动物的重大疾病.
- 阿尔帕卡可以受到C. perfringens的影响,需要进一步调查其致病性和宿主反应.
研究的目的:
- 从阿尔帕卡的肠道内容中分离和识别C. perfringens.
- 在小鼠模型中评估C. perfringens类型A的致病性.
- 分析C. perfringens感染对十二指甲膜屏障功能和免疫细胞反应的影响.
主要方法:
- 使用格拉姆染色,生物化学测试和PCR对16SrRNA和毒素基因进行C. perfringens的分离和鉴定.
- 评估小鼠的致病性,包括对脏,肺部和十二指肠的组织病理学检查.
- 通过qRT-PCR对小鼠十二指肠中ZO-1和奥克卢丁mRNA表达的量化.
主要成果:
- 从阿尔帕卡的肠道内容中成功分离了A型的C. perfringens.
- 感染导致了小鼠的脏,肺和十二指肠的严重病理,由CD4+和CD8+T细胞介导.
- 在感染小鼠的十二指肠中观察到ZO-1和奥克卢丁的mRNA表达减少,这表明肠道屏障功能受损.
结论:
- 甲型C. perfringens感染对阿尔帕卡斯构成重大病理威胁,影响多个器官.
- 这种细菌破坏了肠道屏障的完整性,导致疾病的发病.
- 这些发现为开发针对阿尔帕卡的C. perfringens的向药物和疫苗提供了基础.
相关概念视频
02:16Stereotype Content Model
15.4K
The Stereotype Content Model (SCM) was first proposed by Susan Fiske and her colleagues (Fiske, Cuddy, Glick & Xu, 2002; see also Fiske, 2012 and Fiske, 2017). The SCM specifies that when someone encounters a new group, they will stereotype them based on two metrics: warmth—or that group’s perceived intent, and how likely they are to provide help or inflict harm—and competence—or their ability to carry out that objective. Depending on the warmth-competence...
15.4K
01:23Anatomy of the Intestines
87.3K
Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
87.3K
01:15Small Intestine
3.8K
The small intestine is primarily responsible for digestion and nutrient absorption. It spans from the pyloric sphincter to the ileocecal valve and connects to the large intestine.
The small intestine is divided into three main sections - the duodenum, jejunum, and ileum. The duodenum, approximately 25 cm long, is nearest the stomach. It acts as a 'mixing bowl,' where chyme (partially digested food) blends with digestive enzymes from the pancreas and liver. The duodenum's unique...
The small intestine is divided into three main sections - the duodenum, jejunum, and ileum. The duodenum, approximately 25 cm long, is nearest the stomach. It acts as a 'mixing bowl,' where chyme (partially digested food) blends with digestive enzymes from the pancreas and liver. The duodenum's unique...
3.8K
01:09Large Intestine
4.9K
The large intestine is divided into three main regions: the cecum, colon, and rectum. Extending from the ileocecal valve to the anus, it frames the small intestine on three sides.
The ileocecal sphincter, a mucous membrane fold, guards the opening from the ileum to the large intestine. This valve permits material from the small intestine to pass into the large intestine. Attached to the ileocecal valve is the cecum. This small pouch, approximately 6 cm long, has a twisted, coiled tube known as...
The ileocecal sphincter, a mucous membrane fold, guards the opening from the ileum to the large intestine. This valve permits material from the small intestine to pass into the large intestine. Attached to the ileocecal valve is the cecum. This small pouch, approximately 6 cm long, has a twisted, coiled tube known as...
4.9K
01:23Measurement of Air Content in Concrete
623
Air content measurement in concrete is critical for ensuring structural integrity and durability of concrete structures, especially in environments prone to severe weather conditions. Accurate air content analysis optimizes concrete's resistance to freeze-thaw cycles and enhances its workability and strength. Several methods are standardized under ASTM guidelines to measure the air content in fresh concrete, each suitable for different concrete types and conditions.
The pressure method,...
The pressure method,...
623
02:33Distribution of Cytoplasmic Content
4.7K
Cytokinesis segregates a cell’s chromosomes and organelles into its daughter cells. Organelles divide and grow prior to cell division but cannot be synthesized de novo; therefore, cells must receive at least one copy of each organelle to survive. Currently, many of the details of how the organelles are distributed are not yet fully elucidated.
Distribution of cytoplasmic determinants
The cytoplasm contains various organelles, as well as salts, proteins, and water. The distribution of...
Distribution of cytoplasmic determinants
The cytoplasm contains various organelles, as well as salts, proteins, and water. The distribution of...
4.7K