通过高维系统的孟德尔随机化发现的介导胰岛素抵抗和妊娠糖尿病的代谢途径
Wei Chen1, Mingjuan Luo2, Jingyi Guo1
1Clinical Research Center, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Cardiovascular diabetology
|May 9, 2025
概括
孕期糖尿病 (GDM) 与胰岛素抵抗有关. 通过饮食准特定的代谢途径,如氧酸盐和二碳酸盐代谢,可能为GDM提供一种新的预防策略.
科学领域:
- 遗传学和基因组学 遗传学和基因组学
- 代谢障碍 代谢障碍 代谢障碍
- 生殖健康 生殖健康
背景情况:
- 孕期糖尿病 (GDM) 是一种常见的妊娠并发症,与胰岛素抵抗和β细胞功能障碍有关.
- 目前GDM的预防方法仍然不足,这突出了严重的未满足需求.
研究的目的:
- 调查胰岛素抵抗和代谢途径在GDM病变发生过程中的因果作用.
- 为本次调查使用一种新型的高维系统孟德尔随机化 (hdsMR) 框架.
主要方法:
- 从香港大学深医院 (2015-2018) 招募了566名参与者 (274名GDM).
- 收集了临床数据,血清样本,并进行了基因组和代谢组测试.
- 应用了一个新的hdsMR框架来评估胰岛素抵抗 (HOMA-IR) 和代谢途径对GDM的因果影响.
主要成果:
- 确认胰岛素抵抗 (HOMA-IR) 是导致GDM的原因 (OR 1.17,95% CI 1.04-1.32).
- 确定了酸盐和二碳酸盐代谢和氨酸降解途径作为HOMA-IR和GDM之间的调解者.
- 验证了饮食干预可以调节前糖尿病患者的这些途径,并将甘氨酸酸代谢与GDM的不良妊娠结果联系起来.
结论:
- 通过饮食干预来准特定的代谢途径显示了GDM预防的希望.
- 与传统方法相比,hdsMR框架在识别因果代谢途径方面提供了更高的效率.
相关概念视频
Pathophysiology of Diabetes
816
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,...
816
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
Insulin: The Receptor and Signaling Pathways
1.0K
Insulin action is mediated through a receptor tyrosine kinase, akin to the IGF-1 receptor. The number of receptors per cell varies significantly, from 40 on erythrocytes to 300,000 on adipocytes and hepatocytes. The insulin receptor consists of linked α/β subunit dimers, forming a heterotetramer glycoprotein with two extracellular α subunits and two β subunits spanning the membrane. The α subunits inhibit the inherent tyrosine kinase activity of the β subunits, but...
1.0K
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
Oral Hypoglycemic Agents: Biguanides and Glitazones
141
Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood...
141
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


