Articles tagged with Animal Anatomy
Researchers at UBC have created a durable nanocomposite biomaterial heart-valve that enables the heart to adapt faster and more seamlessly. The new design is made from naturally derived materials, such as gels, vinyl, and cellulose, and can be inserted into patients through small incisions, reducing implantation risks.
A study found that thyroid hormones hindered the ability of early mammals to regenerate their heart tissue, leading to modern humans' susceptibility to irreparable damage. The researchers discovered a connection between these hormones and the transition from ectothermic to endothermic animals.
Researchers at the University of Colorado Boulder studied Burmese pythons' rapid heart growth in response to fasting and feeding, which could aid humans with diseased heart growth. The study reveals ways to isolate python heart cells, allowing for a better understanding of their mechanics and potential applications in human heart health.
A 100-million-year-old hagfish fossil provides critical evidence of the evolutionary history of these enigmatic creatures. The discovery helps place hagfish in a more accurate position within the vertebrate family tree, suggesting a closer relationship with lampreys than previously thought.
New analysis reveals stick insects first dropped eggs while hiding in foliage, and geographically isolated populations are more likely to be related than those with similar features. This discovery sheds light on the evolution of these enigmatic creatures.
Engineered patches integrate therapeutic cardiac cells with injured heart tissue, boosting development of new heart tissue and increasing cardiac functions. The treatment shows promise as a form of cardiac therapy in humans, offering hope for survivors of heart attacks.
Researchers have identified a gene called lrrc10 that may hold the key to repairing damaged hearts in fish. The study found that this gene is already linked to a heart condition in people and could potentially be used to develop new treatments for heart failure, which affects hundreds of thousands of people in the UK.
A team of researchers, led by UH professor Kirill Larin, is investigating the relationship between mechanical factors and genetic pathways in embryonic heart development. Understanding this connection can help prevent congenital heart defects, which claim one out of every 100 baby lives in the US.
Research reveals PRMT1-mediated alternative splicing is strongly linked to dilated cardiomyopathy, a serious heart condition. The study's findings provide new insights into the mechanism of DCM and may lead to the development of new treatments.
Researchers analyzed postnatal mouse hearts to understand regenerative capacity and biochemical processes affected by myocardial infarction (MI). Key findings include novel changes in metabolism, such as temporal regulation of mevalonate and ketone body metabolism.
A new anatomical description of the car-sized sauropod relative Sarahsaurus aurifontanalis has shed light on its evolutionary changes and potential clues to why some dinosaurs got so big. The fossils, discovered in Arizona, provide a rare glimpse into the anatomy of these massive creatures.
Researchers sequenced RNA in 20,000 cardiac cells, uncovering a broad variety of cell types in healthy and diseased hearts. The study found great diversity among each cell type, as well as indications of functional changes during normal and diseased conditions.
Researchers discovered that neonatal pig hearts can functionally and structurally recover from experimental heart attacks. The ability to regenerate heart muscle is short-lived, disappearing by day three after birth.
Researchers have discovered how polarized cells coordinate heart tube remodelling through tissue-scale polarisation of actomyosin activity. A disrupted PCP signalling pathway alters cytoskeleton structure, leading to impaired heart formation and most congenital heart diseases.
The American Heart Association advises consuming two servings of non-fried fish per week to reduce heart failure and coronary heart disease risk. Eating oily fish rich in omega-3 fatty acids substantially outweighs any risks associated with mercury contamination.
A study published in Cell Reports found that accumulating ceramides can lead to lipotoxic cardiomyopathy, a heart condition often associated with diabetes and obesity. Researchers discovered potential therapeutic targets to prevent or reverse the effects of this condition.
A new study reveals that primitive air-breathing fish, such as the South American lungfish, exhibit similar mechanisms controlling the heart as mammals. These mechanisms include a periodic breathing pattern and respiratory sinus arrhythmia (RSA), which enables the fish to maximize oxygen uptake during air-breathing bouts.
Researchers identify four genes that enable adult cardiomyocytes to divide and multiply, regenerating heart tissue in animal models. The technique could also be used to coax other types of adult cells to divide again, potentially treating brain damage, diabetes, hearing loss, and blindness.
Researchers at the University of Cincinnati have shown that probenecid may improve heart function in adult patients with heart failure by increasing ejection fraction and enhancing calcium use in cardiac muscle contraction. The study found promising results, suggesting a new potential treatment for this condition.
The study reveals that Albertocetus had a large brain size, intermediate between modern cetaceans and terrestrial even-toed hoofed animals. The partial vertebral column indicates that it retained a similar shape and moved similarly to its archaeocete ancestors.
A study found that the general public's limited understanding of human anatomy can impact the success of health screening campaigns targeting specific organs. The research revealed a surprising eagerness among the public to learn about anatomy, despite their knowledge gaps.
Researchers developed a device to assess mitochondrial oxygenation, predicting cardiac arrest in critically ill heart patients. The device uses resonance Raman spectroscopy to quantify oxygen levels and has been shown to accurately predict cardiac arrest with 97% specificity.
Agnostus pisiformis, a small but well-preserved trilobite-like arthropod, has been used to create detailed sculptures revealing its complete anatomy. The fossil provides valuable insights into ancient life and ecosystems, shedding light on the ecology and mode of life of this extinct species.
A University of Guelph professor has identified a protein that enables fish to adjust the size of their hearts in response to changing temperatures. This finding may lead to new insights into preventing or treating cardiac fibrosis, a condition where the heart builds up scar tissue after injury.
A new study reveals that fish-scale geckos have a hidden strength in their fragile skin, containing bony deposits known as osteoderms. The geckos' ability to drop their skin as a defense mechanism is paradoxically paired with the presence of armor-like osteoderms.
In a new study published in Scientific Reports, researchers at Brown University found that guppy moms in low-predation areas (LP) produce larger offspring with more mature internal anatomy, including wider mouth joints and harder heads. This adaptation enables LP guppies to better compete for food and survive in their environment.
Researchers have developed a new technique to create miniature human hearts by introducing human cells into the matrix of a whole rat heart, preserving the lining and circulation. This method allows for the confirmation of basic science findings and testing of potential new heart drugs with improved accuracy.
A new fossil discovery challenges our understanding of the early evolution of tetrapods, revealing a fish-like creature with a snake-like exterior. The Lethiscus stocki fossil shows immediate and dramatic evolutionary experimentation, dropping its position on the 'family tree' and impacting evolutionary biology.
Researchers at the University of Missouri developed 3D models of the American alligator's skull using cutting-edge imaging tools. The models accurately predict bite forces, enabling scientists to study the origins and movements of extinct species.
Researchers found that cinnamon supplements reduced belly fat, improved sugar and insulin levels, and increased antioxidant molecules in rats fed a high-fat diet. This suggests that cinnamon may mitigate the negative effects of a high-fat diet on cardiovascular health.
A new study by Dara Orbach, PhD, uses computed tomography scans and silicone models to visualize the anatomy of dolphin copulation. The research reveals complex vaginal folds and spirals that interact with the penis during fertilization.
Researchers discovered that macrophages aggregate around cardiac cells to facilitate electrical conduction, helping the heart beat in rhythm. This finding suggests a new role for immune cells in electrophysiology and may lead to new therapeutics for heart disease.
Researchers found that eosinophils play a key role in the progression of heart muscle inflammation to heart failure in mice. The study suggests that eosinophils may be responsible for the deterioration of heart muscle function, even in the absence of severe inflammation.
Research from Stanford University identified phenanthrene, a polycyclic aromatic hydrocarbon, as the culprit behind cardiotoxicity in fish exposed to crude oil spills. The study found that phenanthrene disrupts heart function in both marine and terrestrial species, including mammals and birds.
Researchers developed a customizable soft robotic sleeve that fits around the heart and helps it beat, reducing the risk of clotting and improving cardiac function. The device may one day aid in cardiac rehabilitation and recovery, potentially restoring quality of life for patients with heart failure.
A University of Pittsburgh researcher has successfully regenerates heart tissues in mice using components from zebrafish, a skill lost among humans and other mammals. Human heart cells have also shown promising results in vitro, paving the way for potential treatments for heart disease.
Researchers have discovered a new lagerpetid and saurischian dinosaur together, providing insights into the evolution of dinosaurs. The findings suggest that dinosaurs and their precursors coexisted during the earliest stages of dinosaurs' rise, contradicting previous theories.
Researchers are uniting to tackle the complex challenge of understanding brain function through large-scale computational modeling. This approach aims to improve our knowledge of brain function by creating realistic models based on biological data.
The discovery of 25 little bones in India suggests that primates native to the region played a crucial role in the early evolution of primates. The bones, dated to around 54.5 million years ago, show primitive features that do not clearly belong to either clade and may represent an early stage of primate evolution.
Researchers found that omega-3 fatty acids improved the structure and tissue of the heart in patients receiving current guideline-based therapy after a heart attack. The treatment reduced left ventricular end-systolic volume index by 5.8% and scarred connective tissue formation by 5.6%.
Researchers have identified RBPJ as a key control point for controlling blood vessel growth in the adult heart, which may lead to new treatments for heart disease. The discovery suggests that blocking RBPJ could promote new blood supplies and improve heart attack outcomes.
Researchers found that young birds exhibit mature flight stroke early in development by leveraging leg and wing power, challenging existing ideas about flight origin. This discovery could provide insights into the evolution of flight in ancient theropod dinosaurs.
Researchers at Ohio State University have engineered new calcium receptors to enhance or preserve heart function in mice without harmful effects. The study shows improved cardiovascular performance and reduced mortality compared to control groups.
Paleontologists discovered a spiral valve similar to sharks and rays in a Triassic bony fish fossil, providing insights into the evolution of vertebrates' gastrointestinal tracts. The gut contents reveal a straight stomach and high energy requirements for an energetic lifestyle.
A team studied the proteins and genes that allow squirrels' hearts to stay healthy during winter hibernation, a phenomenon that could help researchers develop better treatments for people with cardiac disease. The study found dozens of proteins and protein signaling pathways that are expressed differently during hibernation.
A team of researchers has identified a protein that helps heart muscle cells regenerate after a heart attack, improving cardiac function and survival rates in mice and pigs. The protein patch, loaded with Follistatin-like 1, showed remarkable results in animal models, regaining nearly normal function within four to eight weeks.
Researchers develop a bioengineered collagen patch loaded with Fstl1 protein to regenerate heart tissue after damage. The treatment restored function and allowed for progressive recovery in animal models.
Researchers Terrie Williams and her team have studied exercise physiology in wild animals and human athletes for over 30 years. Key findings include the high prolonged heart-rate levels of professional big-wave surfers, with one recorded at 200 beats per minute, and how this differs from dogs and cats.
Scientists at the University of Pennsylvania have identified a stem-like progenitor cell, called cardiomyoblast, that produces only heart muscle cells. This discovery is expected to accelerate research into cardiac therapies and potentially lead to new treatments for heart damage.
Researchers found that vinculin levels increase with age, altering the shape and performance of cardiac muscle cells, leading to a healthy adaptive change. The findings suggest that vinculin could be an important therapeutic target to slow down the decline of heart muscle vitality.
Researchers used CT scans to study the brain anatomy of ichthyosaurs, revealing an enlarged olfactory region suggesting a key role for smell. The findings also show that vision was crucial for these marine predators.
Researchers successfully reversioned a bird's skull features to mimic small dinosaurs like Velociraptor and Archaeopteryx. This breakthrough sheds light on the molecular underpinnings of an important evolutionary transition, revealing a single genetic mechanism responsible for transforming beak structure.
A recent study by Evan Saitta found that Stegosaurus had two types of plates: tall and wide. Contrary to previous claims, these were not separate species or ages, but rather males and females. The plates likely played a role in attracting mates and displaying sex.
Researchers at UCI School of Medicine found a potential cause for cryptogenic strokes in 23% of patients with a left atrial septal pouch. The pouch's cul-de-sac nature may promote blood stagnation and clot formation, leading to stroke.
The CRISPR-Cas9 technology enables the rapid creation of transgenic mouse models in just three weeks, compared to six months, revolutionizing the study of diseases such as Huntington's and autism. Dr. Feng Zhang's groundbreaking research has made significant progress in deploying and refining this technique for therapeutic applications.
Researchers at the University of Pennsylvania have discovered a way to reactivate cardiac muscle cell proliferation in adult hearts, leading to reduced scar formation and improved heart function after injury. The approach involves using synthetic microRNAs with short half-lives to induce cardiomyocyte growth.
Researchers discovered that the heart of bluefin tuna adjusts its electrical activity and calcium cycling to maintain constant heartbeat despite temperature changes. This unique adaptation allows the fish to survive in cold waters, shedding light on how animals react to rapid environmental shifts.
Researchers at Children's Hospital Los Angeles found that neonatal mouse hearts can fully recover normal function after mild injury but fail to regenerate after severe injury. The study suggests that cardiac regeneration strategies should be tailored to the type and severity of heart injury.
Researchers have uncovered a critical role of the mitochondrial calcium uniporter (MCU) in regulating heart rate frequency. Blocking MCU function in mouse hearts reduced heart rate increases in response to stimuli, suggesting its importance in physiological heart rate regulation.
A new study found that bottlenose dolphins and Weddell seals experience cardiac arrhythmias during the deepest dives, with over 70% of deep dives affected. The conflicting signals to the heart from exercise-induced tachycardia and dive-induced bradycardia put the heart in an unsteady state.