Articles tagged with Developmental Stages
A Washington State University study found that cannabis vapor exposure lowered sperm counts and slowed movement in male mice and their sons. The study suggests that cannabis use may be detrimental to male reproductive function, contributing to declining human sperm counts.
A new study reveals that mother bats teach their pups to navigate by carrying and dropping them off at specific trees, allowing the pup to learn through repetition. The study found that pups gradually expand their navigation circles, learning to fly independently and finding food sources on their own.
A Brazilian study expands amphibians' known reproductive modes to 74, creating a new classification. The research analyzed 2,171 species of amphibians, including anurans with 71 reproductive modes, some laying eggs in aquatic environments while others develop directly.
Researchers describe disassembly of Drosophila fly trachea during metamorphosis, revealing two-stage process involving cell shrinkage and death. The study highlights intricate involvement of physical mechanisms and biological signalling in regulating cellular decisions.
A recent international workshop aimed to turn plans for a crewed lunar observatory into reality. The workshop, led by Vanderbilt astrophysicist Karan Jani, brought together experts from GW science, planetary science, and lunar exploration to discuss the geophysical properties of the moon and opportunities for observation.
Researchers used zebrafish to study spinal cord development and its role in controlling new movements, discovering patterns of neural activity that can be applied to human locomotor activities like walking and swimming. The study aims to improve treatments for movement disorders by identifying target neurons for restoration.
The number of autism diagnoses in England has skyrocketed by 787% over the past two decades, driven primarily by increased recognition and improved diagnosis for females. Researchers analyzed GP records and found that the greatest rises were among adults, with females making up most of the increase.
Researchers at McGill University found that smoking during pregnancy is associated with an increased risk of premature birth, low birth weight, and birth defects. The study, which examined over nine million deliveries, also discovered that smoking mildly decreases the risk of preeclampsia.
Researchers investigated COVID-19 transmission dynamics among close contacts of index patients, finding timing of exposure impacts disease development. The study also found severity of the index case is associated with clinical presentation in close contacts who develop COVID-19.
Researchers found that gene regulatory mechanisms at an early embryonic stage govern the flowering behavior of Arabidopsis later in development. The FLC transcript is antagonistically regulated by FCA and FRI, with FRI promoting longer and functional FLC protein levels.
Ancient fish fossils show that teeth and dermal odontodes, a hard structure similar to teeth, are linked by the same development system. High-resolution X-ray imaging reveals changes in their appearance as they develop, suggesting different chemical signals direct their growth.
Researchers found that three-year-olds rely on trial and error, while four-year-olds use visual information to complete puzzles. Understanding pictures as representations is the foundation of drawing and painting, according to the study published in Child Development.
Certain insects arrest their development at specific stages to cope with extreme conditions, a process known as overwintering. Research reveals that day length and temperature separately regulate this adaptation, utilizing distinct mechanisms including the juvenile hormone pathway and insulin/TOR signaling pathway.
Researchers have developed a new quantitative measure of phenological status called the 'phenological index' to improve scoring of developmental stage in herbarium specimens. This approach allows for more accurate predictions of ecosystem responses to climate change.
Researchers at Harvard have grown simplified organs with fully integrated sensors, offering a rare view into early stages of organ development. The cyborg organoids can monitor the electrophysiological activity of cells for up to 90 days, providing insights into how individual cells interact and synchronize during development.
A team of researchers from Osaka University found that aggregated social amoebae require physical contact to induce migration, contradicting the long-held assumption that chemical signals play a crucial role. The study highlights the importance of examining cellular processes at all stages of development, particularly in understanding ...
Researchers found that individuals with more mature personalities view solitude positively, using it for creative activities. In contrast, those with less developed egos tend to avoid solitude and feel lonely.
Scientists have successfully grown human eggs in a laboratory from their earliest stage to full maturity, paving the way for improved fertility treatments. The advance aims to safeguard the fertility of girls with cancer ahead of potentially harmful medical treatment.
Human infants demonstrate an innate ability to recognize heroic acts from early stages of development, drawn to figures protecting the weak. As they grow, their understanding of justice becomes more complex.
A new study reveals that paternal mitochondria are degraded in early stages of development, reducing the risk of embryo lethality. The cps-6 gene plays a key role in initiating this self-destruction process, which may be an evolutionary advantage for the embryo.
The Hitachi Class 800/801 Train, designed to accommodate more passengers and be environmentally sustainable, received the award for its multidisciplinary design approach that prioritized human factors. The train's design improved safety, efficiency, and user experience through prototyping and user research.
A team of scientists has discovered a group of perinatal Saurolophus angustirostris dinosaurs found at the Dragon's Tomb site in Mongolia. The young dinosaurs, likely from the same nest, exhibit characteristics similar to those of adult Saurolophus angustirostris, including an upwardly directed snout and poorly developed crest.
A comprehensive new checklist aims to fill the need for practical steps and resources in guideline development. The checklist, published in CMAJ, includes 18 topics and 146 items with links to resources and training materials.
Organisms build unnecessary structures during development to avoid disrupting later stages of growth. This approach allows newly evolved traits to emerge at the end of development with less risk of disruption.
Researchers found that adding primaquine to fixed-dose artemisinin combination treatments significantly reduces gametocyte carriage, a key factor in malaria transmission. The artesunate-mefloquine regimen showed the highest cure rate and lowest rates of reinfection.
In a study published in JCI Journals, researchers found that calcineurin is essential for complete lung development in mice. Mice lacking calcineurin function died shortly after birth due to lung failure.
Researchers distinguish between ambition formation and decision to run, finding that 'progressive ambition' exists prior to a decision in a particular race. Professional legislators are more successful at raising money and gaining votes, leading to enhanced accountability and responsiveness in U.S. House campaigns.
A study of 37,692 DCIS and 4,490 LCIS patients found LCIS patients were at greater risk for invasive lobular carcinoma ILC and ipsilateral invasive breast cancer. The research suggests LCIS may be a precursor lesion to ILC and warrants localized treatment.
A new laser-based technique can detect developing cavities in teeth, revealing defects at very early stages of development. This photo-thermal method avoids the need for heavy lead aprons to protect patients from hazardous X-rays, making it a promising tool for preventive treatment.
A recent NHLBI study found that 90% of middle-aged Americans are at risk of developing high blood pressure, with a significant decrease in the past 25 years due to improved treatment. Lifestyle changes such as a healthy diet, regular exercise, and moderate alcohol consumption can help reduce this risk.