相关实验视频
Updated: Mar 3, 2026

09:36
Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
28.0K
多基因生长得分和妊娠年龄出生体重较大的风险
Maha Aamir1, Maisa Feghali2, Lynn Yee3
1Bioinformatics Research Center, North Carolina State University, Raleigh, NC 27607, USA.
Journal of the Endocrine Society
|March 2, 2026
概括
多基因生长分数 (PGS) 可以帮助识别胎儿在妊娠年龄 (LGA) 出生体重较大时面临更高风险. 这种遗传风险评估对于身体质量指数 (BMI) 高的母亲尤其有用.
科学领域:
- 生殖生物学 生殖生物学
- 遗传学 遗传学 是一个
- 产周医学 产周医学
背景情况:
- 对于妊娠年龄 (LGA) 的出生体重很大,对后代构成显著的短期和长期健康风险.
- 胎儿遗传学是LGA出生体重的一个潜在贡献因素.
- 识别有风险的胎儿对于及时干预和改善新生儿结果至关重要.
研究的目的:
- 评估多基因生长得分 (PGS) 和LGA出生体重之间的关联.
- 评估PGS,孕产妇体重指数 (BMI) 和孕产妇血糖在预测LGA出生体重风险方面的相互作用.
- 确定PGS在识别LGA出生体重风险增加的胎儿中的实用性.
主要方法:
- 之前开发的LGA出生体重的PGS是使用3286名无双双的个体的后代DNA计算的.
- 统计分析包括单向ANOVA,奇二次测试和规则化的线性模型.
- 这项研究检查了PGS第三种动物,母亲的BMI和葡萄糖挑战测试结果与LGA出生体重风险之间的关系.
主要成果:
- 第一个三分之一的PGS与LGA出生体重的风险降低有关 (aOR 0.71,95% CI 0.53-0.94).
- 相反,第三个PGS三位数与LGA出生体重的风险增加有关 (aOR1.29,95%CI1.02-1.63).
- 在母亲BMI≥35kg/m2和第二或第三个PGS tertile的个体中观察到LGA出生体重的最高几率.
结论:
- 多基因生长分数 (PGS) 显示出有潜力识别妊娠年龄 (LGA) 出生体重较大风险的胎儿.
- 孕产妇肥胖症的预测价值在孕妇肥胖症 (BMI ≥35 kg/m2) 导致的妊娠并发症中尤为明显.
- 将遗传风险评分整合到产前护理中,可能会改善对LGA出生体重有风险的怀孕的管理.
相关概念视频
Polygenic Traits
69.6K
When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...
69.6K
z Scores and Area Under the Curve
19.8K
z scores are the standardized values obtained after converting a normal distribution into a standard normal distribution. A z score is measured in units of the standard deviation. The z score tells you how many standard deviations the value x is above (to the right of) or below (to the left of) the mean, μ. Values of x that are larger than the mean have positive z scores, and values of x that are smaller than the mean have negative z scores. If x equals the mean, then x has a z score of...
19.8K
Nature and Nurture
22.6K
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,...
22.6K
Genome-wide Association Studies-GWAS
16.0K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
16.0K
Diabetes Mellitus: Type 2 and Gestational
5.2K
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...
5.2K
Gene-Environment Interactions
1.3K
Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
1.3K

