甘油有助于在患有2型糖尿病的雄性小鼠中增加结核病的易感性
Nuria Martinez1, Lorissa J Smulan1, Michael L Jameson1
1Department of Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA.
Nature communications
|September 20, 2023
概括
2型糖尿病增加了小鼠结核病的风险和严重程度. 在2型糖尿病中,高血糖水平通过促进Mycobacterium tuberculosis的生长,独特地恶化了结果.
科学领域:
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
- 代谢障碍 代谢障碍 代谢障碍
背景情况:
- 糖尿病是一种已知的结核病 (TB) 和较差治疗结果的风险因素.
- 虽然2型糖尿病比较常见,但1型糖尿病与2型糖尿病对结核病易感性的具体影响仍然不清楚.
研究的目的:
- 研究和比较1型和2型糖尿病模型对Mycobacterium结核病感染易感性的影响.
- 阐明2型糖尿病加剧结核病严重程度的机制,重点关注代谢因素.
主要方法:
- 雄性小鼠被诱导患有2型糖尿病 (高脂肪饮食+链毒素) 或仅用链毒素治疗以模拟1型糖尿病.
- 鼠被感染了Mycobacterium结核病菌,并评估了包括死亡率,肺病理和细菌负担在内的结果.
- 测量了血糖醇水平,并使用M.结核病的糖醇激酶突变物进行了感染研究.
主要成果:
- 与对照组相比,2型糖尿病模型小鼠的死亡率显著增加,肺部病理增加,细菌负担增加.
- 在2型糖尿病模型小鼠中观察到血糖醇的升高,这一发现与M.结核病增长的增加有关.
- 结核病菌的糖利用被确定为导致2型糖尿病易感性增加的关键因素.
结论:
- 2型糖尿病给结核病带来了独特的风险,超出了在两种糖尿病类型中所见的高血糖的一般影响.
- 在2型糖尿病的背景下,由M. tuberculosis引起的葡萄糖代谢升高代表了一种驱动不良结核病结果的新奇机制.
- 向糖醇代谢可以提供一种新的治疗策略,以改善2型糖尿病患者的结核病结局.
相关概念视频
Pulmonary Tuberculosis I
257
Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
257
Diabetes Mellitus: Type 2 and Gestational
2.5K
Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...
2.5K
Diabetes Mellitus: Overview and Type I Subtype
2.7K
Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...
2.7K
Pathophysiology of Diabetes
971
Diabetes mellitus is a chronic metabolic disorder characterized by hyperglycemia. The four categories of diabetes are type 1 diabetes, type 2 diabetes, other specific types of diabetes, and gestational diabetes.
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
971


