نتایج جستجو برای: maternal effect
تعداد نتایج: 1732106 فیلتر نتایج به سال:
INTRODUCTION Maternal nutritional and metabolic factors influence the developmental environment of the fetus. Virtually any nutritional factor in the maternal blood has to pass the placental membranes to reach the fetal blood. Placental weight is a commonly used measure to summarize placental growth and function. Placental weight is an independent determinant of fetal growth and birthweight and...
Maternal effects can dramatically influence the evolutionary process, in some cases facilitating and in others hindering adaptive evolution. Maternal effects have been incorporated into quantitative genetic models using two theoretical frameworks: the variance-components approach, which partitions variance into direct and maternal components, and the trait-based approach, which assumes that mat...
Vitamin B-12 is essential for the development and maintenance of a healthy nervous system. Brain development occurs primarily in utero and early infancy, but the role of maternal vitamin B-12 status during pregnancy on offspring cognitive function is unclear. In this study we assessed the effect of vitamin B-12 status in well-nourished pregnant women on the cognitive ability of their offspring ...
OBJECTIVE Maternal depression and anxiety have been found to negatively affect fetal and neonatal growth. However, the independent effects of maternal depression and anxiety on fetal-neonatal growth outcomes and trajectories remain unclear. This study aimed to analyze simultaneously the effects of maternal prenatal depression and anxiety on (1) neonatal growth outcomes, and (2), on fetal-neonat...
Introduction and Objectives: Nulliparous women with unplanned pregnancy experience high levels of anxiety, which may adversely affect maternal-fetal attachment. Therefore, in this study, we aimed to determine the effect of guided imagery on maternal-fetal attachment in nulliparous women with unplanned pregnancy. Materials and Methods: In this clinical trial, 67 nulliparous women with unplanned ...
Evaluation of the effect maternal Soybean (Glycine max) nutrition on seed quality traits under accelerated aging test
Background: Maternal undernutrition is a major concern globally, contributing to poor birth outcomes. Limited evidence exists on delivering multiple interventions for maternal nutrition simultaneously. Alive & Thrive addressed this gap by integrating nutrition-focused interpersonal counseling, community mobilization, distribution of free micronutrient supplements, and weight-gain monitoring thr...
Many genetic loci that result in lethality when mutated may also have an essential role in oogenesis. The maternal effects of EMS-induced zygotic lethal mutations at 48 loci were examined using the dominant female-sterile technique. Three categories of effects were found. In the first group (13 out of 48), no maternal effect was detected. The second set (20 out of 48) exhibited maternal effects...
Basonuclin is a zinc-finger protein found in abundance in oocytes. It qualifies as a maternal-effect gene because the source of pre-implantation embryonic basonuclin is maternal. Using a transgenic-RNAi approach, we knocked down basonuclin specifically in mouse oocytes, which led to female sub-fertility. Basonuclin deficiency in oocytes perturbed both RNA polymerase I- and II-mediated transcrip...
OBJECTIVE To determine if maternal distress predicts child adjustment outcomes or if child adjustment outcomes predict maternal distress among children newly diagnosed with cancer, and if a parent-focused intervention has downstream effects on child adjustment. METHODS Mothers (n = 52) were randomly assigned to a clinic-based, interdisciplinary intervention for parents of children newly diagn...
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