阿斯特拉加卢斯多糖化合物通过调节记忆B细胞代谢来改善实验性结肠炎
Yifei Deng1, Lizhao Song2, Jiaqi Huang2
1Clinical Medical School, Jiangxi University of Chinese Medicine, Nanchang, 330004, Jiangxi Province, China.
Chemico-biological interactions
|March 24, 2024
概括
阿斯特拉加卢斯多糖 (APS) 通过恢复记忆B细胞 (MBCs) 和促进线粒体代谢,有效治疗性结肠炎 (UC). 这项研究证明了APS.
科学领域:
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
- 胃肠病学 胃肠病学
背景情况:
- 减少的记忆B细胞 (MBCs) 参与了性结肠炎 (UC) 的发病,是治疗点.
- 来自Astragalus membranaceus (AM) 的阿斯特拉加勒斯多糖 (APS) 是一种具有已知的免疫调节作用的传统药物.
- 对于APS在调节大肠炎治疗中MBC的具体机制尚不清楚.
研究的目的:
- 调查APS在改善实验性结肠炎中的有效性.
- 为了确定APS是否可以在结肠炎的背景下调节记忆B细胞 (MBCs).
- 阐明APS作用的潜在分子机制,特别是线粒体代谢.
主要方法:
- 由硫酸 (DSS) 诱导的大肠炎的小鼠模型.
- 用APS治疗大肠炎小鼠7天.
- 评估疾病活动,结肠病理,免疫细胞群 (MBCs,IgA+,Foxp3+,IgG1+,IG2a+,IgG2b+),细胞因子水平 (IgA,TGF-β1,IL-10,IgG,IgM,IL-6,TNF-α) 和线粒体活动 (Mitotracker红色).
- 通过定量聚合酶链反应 (qPCR) 和免疫组织化学进行转录学分析和验证.
主要成果:
- APS显著降低了疾病活动指数 (DAI) 和结肠炎症.
- APS治疗恢复了结肠的长度,提高了有益的细胞因子 (IgA,TGF-β1,IL-10) 和抑制了促炎性细胞因子 (IgG,IgM,IL-6,TNF-α).
- APS增加了MBCs,IgA+MBCs和Foxp3+MBCs,同时降低了IgG1+,IG2a+和IgG2b+MBCs,同时在MBCs中增强了线粒体代谢.
- 转录组学将线粒体代谢确定为一个关键的机制,其中包括BLNK,ALDH1A1,BCL-6,Blimp-1,PAX5,P2X7R,BAFF,BAFFR,CD40,NF-κB和IL-6等基因的差异表达.
结论:
- 通过恢复MBCs平衡,APS有效地改善了DSS诱导的大肠炎.
- 通过促进MBCs中的线粒体代谢,APS的治疗作用可能会通过促进MBCs中的线粒体代谢进行调解.
- 这些发现突出了APS作为UC的有希望的治疗剂,准MBC和线粒体功能.
更多相关视频
08:58Analyzing Beneficial Effects of Nutritional Supplements on Intestinal Epithelial Barrier Functions During Experimental Colitis
Published on: January 5, 2017
12.3K
09:04DNBS/TNBS Colitis Models: Providing Insights Into Inflammatory Bowel Disease and Effects of Dietary Fat
Published on: February 27, 2014
47.4K
相关概念视频
Drugs for Treatment of Ulcerative Colitis in IBD
138
Ulcerative colitis is a chronic inflammatory condition primarily affecting the colon and rectum. The primary drugs used in the treatment of ulcerative colitis are aminosalicylates. They exhibit anti-inflammatory and immunosuppressive properties. They modulate inflammatory mediators and inhibit the activity of nuclear factor κB (NF-κB). Aminosalicylates also reduce inflammation by inhibiting prostaglandin and leukotriene production and decreasing neutrophil chemotaxis and superoxide...
138
Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
331
Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
331
Drugs for Treatment of Constipation-Predominant IBS
162
Pharmacological therapies for IBS-C are designed to alleviate abdominal discomfort and enhance bowel function. In patients with IBS-C, fiber supplements may help soften stools and decrease straining, but may also lead to increased gas production and bloating. Osmotic laxatives like milk of magnesia are frequently used to soften stools and increase stool frequency in IBS-C patients. In addition, two drugs approved for use in severe IBS-C adult cases are linaclotide (Linzess) and lubiprostone...
162
