基因预测的体重指数和孕妇的妊娠结果:一个双样本的门德尔随机化研究
Maddalena Ardissino1,2, Miranda Geddes-Barton1, Anita Banerjee3
1Nuffield Department of Population Health, University of Oxford, Oxford, UK.
BJOG : an international journal of obstetrics and gynaecology
|September 5, 2023
概括
较高的遗传预测体重指数 (BMI) 显著增加了孕妇患子宫前,妊娠期糖尿病和多水的风险. 需要进一步研究膜过早破裂和产后抑郁症.
科学领域:
- 生殖健康 生殖健康
- 遗传学 是一个遗传学.
- 流行病学 流行病学
背景情况:
- 观察性研究表明,肥胖和不良妊娠结果之间存在联系,但容易引起混.
- 门德尔随机化 (MR) 使用遗传变异推断因果关系,尽量减少混.
- 本研究将MR应用于调查体重指数 (BMI) 对妊娠并发症的因果关系.
研究的目的:
- 使用孟德尔随机化来确定基因预测的体重指数 (BMI) 和不良怀孕结果之间的因果关系.
- 利用大规模的遗传数据来克服观察性研究的局限性.
主要方法:
- 采用了两个样本的门德尔随机化 (MR) 研究设计.
- 利用了欧洲人群中全基因组关联研究 (GWAS) 的总结统计数据.
- 从大量女性队列中确定了BMI的仪器变异,并使用反变量加权MR和灵敏度分析评估了与怀孕结果的关联.
主要成果:
- 基因预测的BMI升高与妊娠前 (OR1.68),妊娠糖尿病 (OR1.67) 和多水 (OR1.40) 的风险增加密切相关.
- 暗示性证据表明,与早产膜破裂 (OR 1.16) 和产后抑郁症 (OR 1.12) 的更高风险存在潜在关联.
结论:
- 较高的遗传预测BMI与显著增加的子宫前,妊娠糖尿病和多水症的风险有因果关系.
- 这项研究支持将BMI管理作为减少怀孕期间母亲患病率的关键策略.
- 需要进一步调查与膜早破和产后抑郁症的关联.
更多相关视频
相关概念视频
01:52Regression Toward the Mean
6.3K
Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when...
6.3K
02:30Genomic Imprinting and Inheritance
34.6K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
34.6K
01:49Probability Laws
41.0K
Overview
41.0K
01:20Study Designs in Epidemiology
264
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...
264
02:46Chi-square Analysis
38.3K
The chi-square test is a statistical hypothesis test. It is used to check whether there is a significant difference between an expected value and an observed value. In the context of genetics, it enables us to either accept or reject a hypothesis, based on how much the observed values deviate from the expected values.
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
The chi-square test was developed by Pearson in 1990.
The first step of performing a Chi-square analysis is to establish a null hypothesis, which assumes that there is no real...
38.3K
02:59Animal Mitochondrial Genetics
7.6K
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
7.6K