Articles tagged with Human Development
A new study reveals that mild and asymptomatic SARS-CoV-2 infections can trigger immune responses in pregnant individuals, causing serious inflammatory responses in the developing fetus. The study also found that even without full infection, a pregnant individual's immunological response to infection may impact the fetus.
Researchers found that transposable elements, known as LINE-1, play a critical role in regulating early human development. They help organize the DNA in the cell's nucleus and ensure embryonic cells progress normally through early stages. This discovery challenges previous views of these 'selfish DNA' elements.
A new study found that the effects of alcohol exposure on an embryo prior to implantation can be detected in the late-gestation placenta. The research revealed significant molecular changes in the placenta, including DNA methylation alterations that could serve as a molecular signature for detecting alcohol exposure.
A UCLA-led study has mapped DNA modification in the developing human brain, shedding light on how gene regulation evolves and shapes lifelong mental health. The research provides new insights into early brain development and its connection to neuropsychiatric conditions like schizophrenia and autism spectrum disorder.
Researchers investigate how racism affects development during childhood and adolescence, finding significant increases in epigenetic age acceleration. The study suggests that policies and social regularities may perpetuate discrimination against ethnically and racially minoritized adolescents.
Researchers found that prenatal exposure to synthetic cannabinoid led to cardiovascular problems in female rats and increased respiratory sensitivity to carbon dioxide in male rats. Sleep quality also deteriorated in both sexes, with males experiencing sleep fragmentation due to frequent wakefulness episodes.
Researchers identified a molecular mechanism that controls embryonic diapause in humans, allowing cells to temporarily slow down development. This dormant state is characterized by reduced cell division and slower development, and can be reversed when the mTOR pathway is reactivated.
Researchers at Johns Hopkins University mapped variation in human stem cells, revealing unique developmental patterns and gene expression traits that modify conserved steps. The findings may aid personalized regenerative therapies and advance understanding of cellular variation in humans.
Researchers aim to understand sex-specific effects of wheelchair use in childhood and adolescence to detect, prevent, and treat shoulder pain more effectively. The study uses state-of-the-art MRI scanners and quantitative morphometrics to quantify anatomical changes related to pain.
Pretend play is associated with enhanced cognitive abilities like executive function, language, and perspective-taking. Research suggests that play-based preschool curricula offer more significant long-term advantages in academic performance and students' attitudes towards school.
A new NIH-funded study found that children who experienced food insecurity during early childhood or whose mothers experienced it during pregnancy had a higher BMI and increased chance of developing obesity. Researchers explored how neighborhood food access affected child body mass index and obesity over time.
Dartmouth anthropologists argue that jungle gyms and monkey bars are essential for childhood development, allowing children to build resilience and confidence through risk-taking play. The research cites fossil evidence showing early humans spent extensive time in trees, and modern nonhuman primates exhibit similar climbing skills.
A study found that children as young as six can contribute to group projects when there are clear and common goals. The researchers used a game where children worked together to fill a pool with water, with benefits for the whole group but individual costs. The results showed that most groups achieved their objectives and cooperated, e...
Researchers at RIKEN Center for Biosystems Dynamics found multiple specialized types of DNA replication in early-stage embryos, including a period of instability prone to chromosomal copying errors. This discovery could lead to improved methods of in vitro fertilization (IVF) and better strategies for minimizing chromosomal abnormalities.
A recent study published in Attachment and Human Development found no association between bed-sharing at 9 months and childhood emotional or behavioral problems. Despite ongoing debate, the research suggests that parental bed-sharing is unlikely to have a negative impact on children's development when practiced safely.
Researchers at McGill University found that zebra finches deprived of early social experiences can still form strong bonds with a partner later in life. Female finches developed a preference for their partner's song only when they lived together, suggesting quality time is essential for forming strong bonds.
A study in mice found that the bacteria Bifidobacterium breve supports healthy brain development in fetuses, improving nutrient transport and cell processes. This discovery suggests using probiotics during pregnancy may support fetal brain health and future treatments for growth restriction could focus on maternal gut health.
A Chinese Medical Journal study developed an AI-based system to automate embryo selection and eliminate subjectivity in IVF. The system improved human embryo assessment and selection, achieving higher accuracy in embryo aneuploidy screening than experienced embryologists.
Research from King's College London suggests that childhood maltreatment, particularly neglect, is associated with significant cognitive deficits. The study, published in Lancet Psychiatry, used court-documented records and adult recall to test the relative associations of maltreatment with cognitive abilities.
A study of 12,000 Canadian respondents aged 65+ found that socially independent older adults born in Canada are most satisfied when living solo, while socially dependent immigrants who live alone experience lower life satisfaction. Personality-based social dispositions play a key role in how older adults feel about their living arrange...
A WVU biologist is studying how genes establish animal body plans and contribute to regenerative abilities. He has identified Hox genes as key players in planarian regeneration, suggesting their functions may differ in highly regenerative versus poorly regenerative organisms.
Researchers found that babies form strong expectations for a robot's responses within 10 minutes of interaction. The study suggests that contingency, or caregivers' timely reactions, is key to foundational learning in early development.
A study found that perceived gratitude from romantic partners and older children positively impacts individuals' psychological well-being and reduces parenting stress. Expressing gratitude within the family can promote a climate of appreciation, teaching children to acknowledge others' efforts.
The game illustrates how lifestyle choices, such as eating vegetables and drinking alcohol, impact the human microbiome. Researchers developed the game to provide a comprehensive overview of the microbiome in a fun and accessible way.
Researchers discovered that mutations in the SYNGAP1 gene disrupt prolonged human neuron development, leading to accelerated maturation and altered cognitive function. This finding has implications for understanding and treating intellectual disabilities and autism.
A new study from the University of Illinois examines the interpersonal effects of racial discrimination on parents and their adolescent children, finding that interactive effects of exposure to discrimination lead to increased psychological distress and lower levels of family support. The researchers identify four clusters of responses...
Research shows that wealthy countries in the Global North benefit from unequal exchange with the Global South, net-appropriating 826 billion hours of labor. This amounts to a wage value of €16.9 trillion, equivalent to half of total consumption in the Global North.
A new study suggests that ending mass human deprivation and providing good lives for the whole world's population can be achieved while reducing environmental damage. The research proposes that only 30% of current global resources and energy use are required to provide universal access to basic goods and services.
Neurons in the brain's zona incerta (ZI) are activated by maternal presence, reducing infant distress and stress hormone levels. The study suggests that these neurons integrate sensory signals to facilitate social interactions, providing a potential entry point for studying infant development.
Children with conduct disorder show significant reductions in brain surface area and volume of subcortical regions compared to typically developing children. These findings suggest that the development of the brain is different in individuals with CD, highlighting the need for further research into this under-recognized condition.
Researchers created tiny force sensors directly in chicken embryos to study spinal cord malformations. The study aims to prevent congenital malformations by identifying new preventative and therapeutic strategies. Quantifying mechanical forces during embryonic development promises a step change in understanding development.
The UTEP research team found that nanoplastics and PFAS can alter proteins in human breast milk, infant formulas, and affect oxygen storage. This could lead to developmental defects, compromised immunity, and reduced mineral absorption.
A novel 3D imaging model has been introduced to identify features of blastocysts associated with successful pregnancies, potentially transforming current IVF selection methods. The study found that parameters related to size and specific features of the inner cell mass and outer layer are linked to higher pregnancy rates.
The UK has released a pioneering Code of Practice for the use of stem cell-based embryo models in research, providing standards for rigorous ethics and maximizing benefits. The code sets out processes for decision-making in research using these models, allowing scientists to proceed confidently while maintaining public trust.
Rutgers researchers found that exposure to Zearalenone, a fungal toxin common in processed foods, was associated with altered estrogen and androgen levels in pregnant women. High levels of ZEN were linked to lower estrone and free testosterone in male fetuses and higher 17β-estradiol in female fetuses.
Research on mice exposes to cannabidiol during gestation shows altered behaviors and brain changes, affecting nerve cells involved in processing emotions. The study suggests a public health priority to understand CBD's impact on developing nervous systems.
Bioethicist Insoo Hyun argues that advances in organoids and embryonic models strengthen rather than weaken the concept of human individuality. Current technologies are unable to replicate sentience, a crucial aspect of personhood, until major innovations are made.
A study found that overexpressing a gene responsible for amino acid transport in the placenta can cause fetal growth to increase by 27%, while also providing insights into pregnancy complications like IUGR and obesity. The research has therapeutic implications, potentially informing treatments to prevent or treat these conditions.
This study reveals that thalamocortical connectivity plays a vital role in the formation of functional brain networks. The researchers used advanced neuroimaging techniques and computational models to map changes in thalamocortical connectivity across different age groups, from infancy to adulthood.
A new study found that children who were more positively sensitive to their parents' praise when they were 3 years old had fewer behavioral and emotional problems when they were 5–7 years old. Childhood sensitivity to psychosocial influences was also found to predict mental health in middle childhood.
A new study from the University of Illinois found that adolescents and their mothers preferred specific locations for discussing problems, with the house in general, bedroom, kitchen, and living room being top choices. These environments were perceived as safe spaces where conversation could flow more easily. Families also considered e...
A new study from the University of Lausanne reveals that both high and low levels of the AFF3 protein can lead to severe intellectual deficits and developmental disorders. The research, led by Alexandre Reymond, identifies a critical role for the gene in development and highlights the importance of precise dosage.
Researchers analyzed 130 English-learning infants' vocalizations and found significant cluster patterns of squeals and growls, indicating active play and sound practice. These findings suggest that infant vocal category exploration is a fundamental pathway for language development.
A recent study published in ScienceDirect found that adolescents who receive cognitive reappraisal solutions from their mothers experience more adaptive coping strategies, whereas those who receive strategizing or help-seeking solutions do not. On the other hand, children who reject or respond ambiguously to their mother's cognitive re...
A study of Neanderthal and Palaeolithic human teeth reveals that the two species experienced childhood stress at different developmental stages. Neanderthal children faced increased stress post-weaning, while Palaeolithic humans were less stressed after weaning.
A new study led by University of Florida researcher Ashley Malin found a possible link between fluoride exposure during pregnancy and increased odds of neurobehavioral problems in children at age 3. The findings, based on an analysis of 229 mother-child pairs, suggest that higher fluoride levels may negatively affect fetal brain develo...
Researchers used supercomputers to study how fruit fly embryo cells develop into wings, offering a window into human development and possible treatments for birth defects. The team found that actomyosin drives much of the development process, particularly in the lower wing disc flattening.
Researchers discovered a link between disrupted developmental dopamine signaling and autism spectrum disorder, highlighting the importance of studying neural development pathways. The study found that dopaminergic signaling disruptions led to neural circuit abnormalities and behavioral phenotypes reminiscent of autism in zebrafish larvae.
Researchers created a new model to study the effects of undernutrition on the microbiome, which can help identify specific microbes that impact development. The model mimics early childhood experiences and shows promise in understanding the underlying causes of stunted growth and other harmful effects of undernutrition.
A new IU study reveals that young infants' daily-life input is unique to their age, characterized by high-contrast edges and simple patterns, which serve as a foundation for human vision. This finding has implications for addressing lifelong visual deficiencies and improving AI visual systems.
Researchers Polina A. Loseva and Vadim N. Gladyshev challenge the existing definition of human life, suggesting a new meaning for the 14-day stage in organismal life grounded in recent mechanistic advances and insights from aging studies. This stage defines the separation of soma from the germline and marks the boundary between rejuven...
A new atlas of early brain development has been created, allowing researchers to understand the genetic processes behind brain tumor formation in children. The study's findings may lead to new treatments for this rare but deadly disease.
Researchers discovered that maternal blood cytokines, such as XCL1, play a crucial role in fetal brain development and offspring behavior. Elevated XCL1 levels during pregnancy are associated with improved emotional regulation and reduced anxiety in male mice.
A University of Massachusetts Amherst study is tracking over 300 infants and preschoolers to assess the importance of napping on brain development. The research aims to identify the bioregulatory mechanisms involved in napping and its impact on memory, with findings expected to inform nap policies for young children.
A recent study published in Nature Cell Biology found that increased hydrostatic pressure can hinder the healthy development of neural crest cells, leading to an increased risk of facial malformations. The researchers suggest that physical cues in the womb, such as pressure, may play a role in shaping facial features.
Researchers studied infant marmosets' interactions with caregivers to understand how parenting influences attachment formation and child development. The findings reveal that marmosets adjust their attachment to different caregivers and develop attachment disorders when raised away from families.
Researchers have gained new insights into the development of cells, their communication with each other, and regulation at the gastro-esophageal junction. The study reveals complex cellular communication and signaling pathways, which has significant implications for understanding, preventing, and treating gastrointestinal diseases.
Researchers have developed a method to differentiate human pluripotent stem cells into cell populations that form patterns resembling the facial primordium. This allows for the creation of an in vitro model to study early facial development and potential treatments for craniofacial disorders.
A study published in PLOS ONE found that earlier puberty onset is associated with higher adult cardiometabolic risk and mediates the effects of childhood risk factors. The research suggests targeting puberty onset may improve health outcomes in at-risk girls.
Academics from the University of Birmingham suggest a new approach to identifying consciousness in babies, building on adult markers. They propose clustering markers across early and late development stages to pinpoint emergence.