相关实验视频

Updated: Jan 12, 2026

Competing-Risk Nomogram for Predicting Cancer-Specific Survival in Multiple Primary Colorectal Cancer Patients after Surgery

Competing-Risk Nomogram for Predicting Cancer-Specific Survival in Multiple Primary Colorectal Cancer Patients after Surgery

Published on: September 27, 2024

专蛋白,总蛋白质和结直肠癌风险之间的因果关系:一个双样本的门德尔随机化研究

Jia Chen^1,2, Xin Zhong^1,2, Fulin Wang^1,2

¹Digestive Diseases Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, People's Republic of China.

|November 5, 2025

概括

这项研究调查了欧洲人血液中蛋白质水平与结直肠癌 (CRC) 风险之间的因果关系. 门德尔随机化发现,较高的总蛋白 (TP) 水平与患CRC的风险降低有关.

科学领域:

遗传学和流行病学
癌症研究癌症研究
生物标志物生物标志物

背景情况:

专蛋白 (ALB) 和总蛋白 (TP) 是关键的血液成分,在结直肠癌 (CRC) 风险中可能发挥作用.
以前的观察性研究表明ALB,TP和CRC之间存在相关性,但因果关系尚不清楚,特别是在欧洲人群中的ALB.

研究的目的:

在欧洲人口中调查基因预测的白蛋白 (ALB) 和总蛋白 (TP) 水平与结直肠癌 (CRC) 风险之间的潜在因果关系.
为了解决ALB和CRC之间缺乏充分调查的因果关系,以及TP和CRC之间尚未探索的因果关系.

主要方法:

采用了一个双样本的门德尔随机化 (MR) 研究.
对ALB和TP的暴露数据来自英国生物银行GWAS (ALB的N=315,268,TP的N=314,921).
对CRC的结果数据 (N=6509例,N=28,7137例对照) 来自FinnGen联盟GWAS. 逆方差加权 (IVW),MR-Egger和加权中位数方法用于因果推断.

主要成果:

在IVW分析中,ALB和CRC风险之间没有显著的因果关系 (OR=1.04,P=0.65).
相反,IVW分析显示TP与CRC风险降低之间存在显著的因果关系 (OR=0.78,P=0.003).

结论:

基因预测较高的总蛋白 (TP) 水平与欧洲人患结直肠癌 (CRC) 的风险降低有关.
专蛋白 (ALB) 水平似乎对该人群的结直肠癌 (CRC) 风险没有显著的因果关系.

关键词:

门德尔的随机化专辑蛋白 (albumin) 是一种结肠直肠癌是什么意思全基因组关联研究研究.总蛋白质的总蛋白质总量是多少

更多相关视频

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Published on: June 21, 2018

相关概念视频

Hypothesis Test for Test of Independence

Hypothesis Test for Test of Independence

The test of independence is a chi-square-based test used to determine whether two variables or factors are independent or dependent. This hypothesis test is used to examine the independence of the variables. One can construct two qualitative survey questions or experiments based on the variables in a contingency table. The goal is to see if the two variables are unrelated (independent) or related (dependent). The null and alternative hypotheses for this test are:
H0: The two variables (factors)...

Drug Distribution: Plasma Protein Binding

Drug Distribution: Plasma Protein Binding

Drugs predominantly attach to plasma proteins, with only a small percentage remaining unbound. The unbound portion can be calculated as one minus the bound fraction. Acidic drugs form large, inactive complexes by reversibly binding to plasma albumin, which prevents them from diffusing across biological barriers. These drug-protein complexes act as reservoirs for the drugs. As the concentration of unbound drugs decreases, these complexes quickly dissociate to release the free drug, maintaining...