相关实验视频

Updated: Jun 26, 2025

Non-invasive Assessment of the Efficacy of New Therapeutics for Intestinal Pathologies Using Serial Endoscopic Imaging of Live Mice

Non-invasive Assessment of the Efficacy of New Therapeutics for Intestinal Pathologies Using Serial Endoscopic Imaging of Live Mice

Published on: March 10, 2015

饮食因素与结直肠癌风险之间的因果关系:孟德尔的随机化研究

Xu Zhang^1,2, Zhimeng Wu^2,3, Xiangrui Wang^2,3

¹Department of Gastroenterology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.

Frontiers in nutrition

|May 16, 2024

概括

酒精消费增加了结肠直肠癌 (CRC) 的风险,而非油性鱼类,新鲜水果,谷物和干果的摄入量降低了CRC风险. 这项门德尔随机化研究提供了对饮食和CRC的遗传见解.

科学领域:

营养流行病学营养流行病学
胃肠病学胃肠病学
遗传病因学遗传病因学

背景情况:

观察性研究表明饮食和结直肠癌 (CRC) 之间存在联系,但局限性阻碍了最终的结论.
具体的饮食因素与CRC风险之间的因果关系尚不清楚.
流行病学研究中的混因素使饮食-CRC关联的解释变得复杂.

研究的目的:

使用孟德尔随机化研究各种饮食习惯对结肠直肠癌 (CRC) 风险的因果关系.
利用遗传变异作为饮食暴露的工具变量,减轻混.
提供对饮食-CRC关联的基因层次理解.

主要方法:

两个样本的门德尔随机化 (MR) 分析使用来自IEU开放GWAS项目的数据进行.
分析了饮食暴露的综合清单,包括酒精饮料,肉类,鱼类,乳制品,谷物,水果,蔬菜和饮料.
逆方差加权 (IVW) 方法是主要分析方法,并补充了加权中位数,MR-Egger和基于模式的强度方法. 敏感性分析涉及异质性和性.

主要成果:

每周增加的饮酒量与增加的CRC风险存在因果关系 (OR:1.565).
摄入非油性鱼类,新鲜水果,谷物和干果与降低CRC风险 (ORs < 1) 有因果关系.
敏感性分析证实,没有显著的异质性或性,支持了研究结果的可靠性.

结论:

酒精摄入量是CRC的危险因素,而非油性鱼类,新鲜水果,谷物和干果的消费可能具有保护作用.
这项研究确定了特定的饮食因素和CRC之间的遗传联系,提供了新的见解.
这些发现有助于理解CRC的遗传病因,并为胃肠道疾病的临床预防策略提供信息.

关键词:

在GWAS中,GWAS就是GWAS.门德尔的随机化有关因果关系的因果关系结肠直肠癌是什么意思饮食因素饮食因素

更多相关视频

Evaluation of Colorectal Cancer Risk and Prevalence by Stool DNA Integrity Detection

Evaluation of Colorectal Cancer Risk and Prevalence by Stool DNA Integrity Detection

Published on: June 8, 2020

Author Spotlight: Liujunzi Decoction as a Traditional Chinese Treatment for Coloproctitis Cancer

Author Spotlight: Liujunzi Decoction as a Traditional Chinese Treatment for Coloproctitis Cancer

Published on: October 13, 2023

相关概念视频

Cancer Prevention

Cancer Prevention

Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...

Mismatch Repair

Mismatch Repair

Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...

Dihybrid Crosses

Dihybrid Crosses

Mutagenicity and Carcinogenicity

Mutagenicity and Carcinogenicity

Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...

Chromosomal Theory of Inheritance

Chromosomal Theory of Inheritance

In 1866, Gregor Mendel published the results of his pea plant breeding experiments, providing evidence for predictable patterns in the inheritance of physical characteristics. The significance of his findings was not immediately recognized. In fact, the existence of genes was unknown at the time. Mendel referred to hereditary units as “factors.”