体重指数和胰岛素抵抗之间的因果关系:在日本人口中进行线性和非线性孟德尔随机化研究
Noriyuki Ishida1,2, Sei Harada3, Ryota Toki3
1Biostatistics Unit, Clinical and Translational Research Center, Keio University Hospital, Tokyo, Japan.
Journal of diabetes investigation
|April 30, 2025
概括
肥胖和低体重指数 (BMI) 可以增加胰岛素抵抗,可能导致2型糖尿病. 管理BMI对于预防胰岛素耐药性至关重要,特别是在东亚人口中.
科学领域:
- 代谢健康和内分泌学
- 遗传流行病学遗传流行病学
- 公共卫生和预防慢性疾病
背景情况:
- 肥胖是2型糖尿病的重要危险因素,其特点是胰岛素抵抗和胰岛素分泌受损.
- 亚洲人群中肥胖和胰岛素抵抗之间的特定关系需要进一步研究.
- 体重指数 (BMI) 是肥胖和代谢健康的关键指标.
研究的目的:
- 使用孟德尔随机化 (MR) 调查身体质量指数 (BMI) 和血糖特征之间的因果关系.
- 评估BMI对胰岛素耐药性的影响 (胰岛素耐药性的恒温模型评估 - - HOMA-IR).
- 探索BMI与胰岛素耐药性关系中的潜在非线性关联和效果修改.
主要方法:
- 个人级别的门德尔随机化 (MR) 分析是使用BMI相关变异的遗传风险得分进行的.
- 数据来源于日本队列中3745名没有糖尿病的个体.
- 进行了非线性MR分析和子组分析,以检查异质性和因果关系的形状.
主要成果:
- 核磁共振分析显示,BMI与胰岛素抵抗 (HOMA-IR) 之间存在显著的正相关性.
- 基于年龄,性别,生活方式和心脏代谢特征的子组中观察到协会的异质性.
- 非线性MR分析表明BMI和HOMA-IR之间存在潜在的J形因果关系.
结论:
- 肥胖和低BMI都与胰岛素抵抗增加有关.
- 体重指数对胰岛素耐药性的影响可以通过各种因素来改变.
- 有效的BMI管理对于预防胰岛素抵抗和2型糖尿病至关重要,特别是在具有较低胰岛素分泌能力的东亚人群中.
相关概念视频
Obesity
300
The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...
300
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: 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
Nature and Nurture
20.3K
Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience,...
20.3K
Study Designs in Epidemiology
134
Epidemiological study designs are fundamental tools for investigating the distribution, determinants, and control of health conditions in populations. They help researchers understand the relationships between exposures and outcomes, and they broadly fall into two categories: "observational" and "experimental" studies.
Observational studies are those where the researcher does not intervene but rather observes natural variations. They include cross-sectional, cohort, and...
Observational studies are those where the researcher does not intervene but rather observes natural variations. They include cross-sectional, cohort, and...
134
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


