修改德克斯硫酸模型,以识别诱导或加剧炎症性肠病的病原体
Victor J Johnson1, Michael I Luster1, Michael Kashon2
1Burleson Research Technologies, Inc, Morrisville, NC, USA.
Journal of immunotoxicology
|December 29, 2025
概括
这项研究修改了一种小鼠模型,以确定影响炎症性肠病 (IBD) 的环境因素. 一种高盐饮食加剧了德克斯硫酸诱导的IBD,显示模型.
科学领域:
- 胃肠道学和免疫学
- 毒理学和环境健康
背景情况:
- 环境因素与人类炎症性肠病 (IBD) 有关,包括性结肠炎 (UC) 和克罗恩病 (CD).
- 现有的制药模型需要进行调整,以识别影响IBD的环境因素.
- 介绍了一种修改后的小鼠模型,以评估环境对IBD发展,严重程度和恢复的影响.
研究的目的:
- 适应和验证一种小鼠模型,以识别可能加速,加剧或损害IBD恢复的环境因素.
- 研究高盐饮食 (HSD) 对小鼠中酸 (DSS) 诱导的IBD的影响.
主要方法:
- 雌性C57BL/6小鼠在饮用水中服用不同度的DSS,持续7天.
- 评估了临床,病理和毒理终点,包括细胞因子/化学因子概况.
- 评估了与DSS同时服用高盐饮食 (HSD) 的影响.
主要成果:
- 与DSS观察到剂量反应关系,其中2%的DSS诱导轻度,可解决的结肠炎症.
- DSS诱导的炎症显示出1型主导性免疫反应,与人类IBD一致.
- 单独的HSD并没有影响结肠损伤,但与DSS联合使用显着加剧和延长了疾病.
结论:
- 经过修改的DSS诱导的小鼠模型适用于识别影响IBD的环境因素.
- 高盐饮食作为DSS诱导的实验IBD的恶化因素.
- 这种模型有助于发现炎症性肠病的环境触发因素和修饰因素.
相关概念视频
Inflammatory Bowel Disease IV: Pharmacological Management
439
Upon diagnosis, managing Inflammatory Bowel Disease (IBD) involves addressing several crucial aspects. The primary goals include resting the bowel, correcting malnutrition, and providing symptomatic relief. Resting the bowel may consist of medications to reduce inflammation and promote healing. Correcting malnutrition is essential, often requiring dietary adjustments and nutritional supplements. Symptomatic relief aims to ease pain, diarrhea, and other discomforts in IBD.
Pharmacologic...
Pharmacologic...
439
Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
609
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...
609
Drugs for Treatment of Crohn's Disease in IBD Using Immunomodulatory Agents
454
Crohn's disease is an inflammatory bowel disorder marked by chronic inflammation of the GI tract. Various treatment strategies for Crohn's disease are employed, such as immunomodulatory agents, glucocorticoids, and biologics or anti-TNF therapy. Azathioprine (Imuran), a commonly used immunomodulatory drug for Crohn's disease, is converted in the body to mercaptopurine, which inhibits purine biosynthesis and cell proliferation. Both are utilized in severe cases of Inflammatory Bowel...
454
Drugs for Treatment of Crohn's Disease in IBD Using Biologic Agents: Anti-TNF
437
Tumor Necrosis Factor (TNF), a proinflammatory cytokine, contributes significantly to the inflammation seen in Crohn's disease. It exists as soluble TNF and membrane-bound TNF, with actions mediated through TNF receptors (TNFR). TNFR activation leads to the release of proinflammatory cytokines, T-cell activation, collagen production, and leukocyte migration, all contributing to inflammation in Crohn's disease. Anti-TNF monoclonal antibodies, namely infliximab (Remicade), adalimumab...
437
Drugs for Treatment of Ulcerative Colitis in IBD
416
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...
416
Inflammatory Bowel Disease I: Ulcerative Colitis
854
Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
854


