2型糖尿病中脑输液和基质代谢的改变:与APOE-ε4的相互作用
Martin Schain1, Edvin Johansson2, Iina Laitinen2
1Antaros Medical, Mölndal, Sweden. martin.schain@antarosmedical.com.
Diabetologia
|April 11, 2025
概括
2型糖尿病与大脑葡萄糖吸收和血流减少有关,但增加了白质脂肪酸代谢. 针对这些代谢变化可能有助于降低阿尔茨海默病的风险.
科学领域:
- 神经科学是一个神经科学.
- 代谢障碍 代谢障碍 代谢障碍
- 神经退行性疾病 神经退行性疾病
背景情况:
- 2型糖尿病是阿尔茨海默病的确立危险因素.
- 人们假设大脑代谢变化是这种关联的媒介.
- 了解这些代谢变化对于确定治疗点至关重要.
研究的目的:
- 研究2型糖尿病患者的大脑新陈代谢,包括葡萄糖和脂肪酸的吸收和血液流动.
- 为了比较2型糖尿病患者,超重个体和瘦肉对照个体之间的代谢参数.
- 探索代谢功能障碍和阿尔茨海默病风险因素之间的关系.
主要方法:
- 使用正电子发射断层扫描 ([18F]氧糖和[18F]-6-甲酸) 来检测葡萄糖和脂肪酸的吸收.
- 雇佣了动脉自旋标记MRI用于大脑 perfusion 评估.
- 使用1H磁共振光谱检测特定的代谢物,并分析脑脊液中的神经退行标记物.
主要成果:
- 与瘦肉对照组相比,患有2型糖尿病的个体显示脑中的葡萄糖吸收和 perfusion 减少.
- 与瘦肉对照相比,超重个体的脑输液也减少了.
- 在2型糖尿病组中观察到白质脂肪酸吸收增加,与胰岛素抵抗标志物相关.
结论:
- 2型糖尿病与大脑葡萄糖吸收和 perfusion 的降低有关,同时增加了白质脂肪酸的吸收.
- 在2型糖尿病和APOE-ε4载体中脂肪酸摄入量增加表明与阿尔茨海默病相关的共享代谢途径.
- 针对大脑代谢功能障碍,特别是脂肪酸代谢,可能提供一种策略,以减轻2型糖尿病中神经退行风险.
关键词:
阿尔茨海默氏症是阿尔茨海默氏症的一种疾病.大脑新陈代谢 大脑新陈代谢脂肪酸代谢 脂肪酸代谢葡萄糖的新陈代谢.神经成像是一种神经成像.perfusion 输液是一种输液.定子发射断层扫描 (PET) 是一种定子发射断层扫描.2 型糖尿病 2 型糖尿病更多相关视频
相关概念视频
Diabetes Mellitus: Type 2 and Gestational
2.1K
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...
2.1K
Pathophysiology of Diabetes
820
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,...
820
Carbohydrate Metabolism
10.6K
Carbohydrates are polymers composed of molecules containing atoms of carbon, hydrogen and oxygen. One gram of carbohydrate can provide four kilo-calories of energy, which makes it the most efficient instant energy source.
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
10.6K
Diabetes Mellitus: Overview and Type I Subtype
2.3K
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...
2.3K
Alzheimer's Disease: Overview
342
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
342
Overview of Carbohydrate Metabolism
573
Carbohydrate metabolism is a fundamental biochemical process that ensures a constant supply of energy to living cells. The most important carbohydrate is glucose, which can be broken down via glycolysis to enter into the Krebs cycle and eventually lead to the production of ATP through oxidative phosphorylation.
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
573


