Articles tagged with Anatomy
A new study reveals that humans, dogs, and pigs share similar brain responses to vocal sounds and calls from their own species, indicating an evolutionarily ancient mammalian heritage. This discovery sheds light on the deep roots of voice perception and highlights the value of studying companion animals to better understand human biology.
A new study demonstrates the potential to produce cellular spheroids from clinically relevant embryonic stem cells to generate scaffold-free chondrogenic or osteochondrogenic graft tissues. The researchers successfully cultured ES-MSC cellular spheroids, which matured into neocartilage tissues expressing cartilage-associated genes.
Researchers have established apple snails as a system to study eye regeneration, which may hold the key for restoring vision due to damage and disease. The team discovered that the snail eye is anatomically similar to humans and can regrow itself, with genes such as pax6 playing a crucial role in development.
Scientists reconstructed the brain, heart, and fins of a 400-million-year-old fish called Norselaspis glacialis. The study found that its acute senses and powerful heart evolved well before jaws and teeth, suggesting a fast-swimming lifestyle was key to evading predators.
The University of Bath conducted the largest growth and maturation study in world football, evaluating over 1,000 academy players in Scotland. The study found a strong bias toward early-developing players, raising questions about current selection and development practices.
A new treatment for corneal scarring is being developed by University of Houston optometry researcher Tarsis G. Ferreira. The treatment uses a natural protein called decorin to block scarring and unwanted blood vessel growth, offering hope for people with injured corneas.
Researchers reanalyzed the coelacanth's skull musculature and found that only 13% of previously identified evolutionary muscle novelties were accurate. The study also identified nine new evolutionary transformations related to feeding and respiration, revealing a more similar anatomy to cartilaginous fish and tetrapods.
Laminin-411 protein and its derived peptide A4G47 exhibit pro-myelinating activity in oligodendrocytes, promoting myelin sheath formation. This discovery advances understanding of myelin sheath formation and potential applications for treating demyelinating diseases.
A study published in Journal of the Mechanical Behavior of Biomedical Materials found that wrinkled skin is caused by its tendency to buckle under pressure due to age-related changes in its mechanical properties. As people age, their skin becomes more prone to wrinkles as it stretches and contracts in different directions.
A novel fluorescent probe, SLY, has been developed to precisely identify hepatocellular carcinoma tissue using sialylated glycans on the cell surface. The probe outperforms conventional methods by clearly distinguishing tumor margins within liver tissues.
A study published in Chinese Neurosurgical Journal found that the Neuroform Atlas stent-assisted coiling procedure is safe and effective for treating intracranial aneurysms in arteries less than 2.5 mm in diameter, with favorable outcomes and low postoperative complication rates.
Researchers compared CECS and EES techniques for treating giant and irregular pituitary tumors. The study found that CECS resulted in a higher gross tumor removal rate (66%) and lower postoperative bleeding rates compared to EES.
A team led by L. Mahadevan found that young anacondas can execute a quick, one-off skating movement called the 'S-start' due to their physical attributes. This movement is similar to sidewinding and could inspire new robotic systems.
A new study shows that a simple blood test taken in the first trimester of pregnancy can accurately identify women at risk of developing preeclampsia five months before clinical diagnosis. The test uses cell-free RNA, or cfRNA, to capture subtle molecular signals from multiple maternal tissues.
Researchers found that chipmunks' skulls became larger but teeth shorter due to increased human food availability. Voles' auditory bullae decreased in size possibly to dampen environmental noise. These changes demonstrate the profound impact of humans on wildlife and their environment.
Researchers from Binghamton University confirm the long-held 'urban myth' that saltwater dries out skin, increasing tissue stiffness and stress. A simple solution to alleviate tightness is taking a shower after coming out of the ocean.
Researchers uncover how RUNX2 regulates cranial base growth by controlling chondrocyte differentiation, proliferation, and organization. The study provides fundamental insights into the complex interplay between RUNX2 and FGFR3, shedding light on novel therapeutic targets for craniofacial defects.
Researchers used a premature aging mouse model to study the effects of age and sex on osteocyte networks and bone structure. Aged PolgA mice showed accelerated skeletal aging, reduced osteocyte connectivity, and increased frailty, with males exhibiting more pronounced changes.
Researchers discovered that the brain's retrosplenial cortex (RSC) encodes competing navigation hypotheses in distinct neural activity patterns. These patterns allow animals to choose the correct path despite ambiguity, and can be used to compute how to reach a reward.
Researchers found that carotid artery plaques can undergo changes over time, becoming more complex and increasing the risk of internal bleeding. This study emphasizes the importance of ongoing plaque monitoring and proactive risk factor management to prevent stroke.
A joint research team from POSTECH and Hanyang University developed a personalized stimulation control mechanism using evoked compound action potential feedback mechanisms to treat urinary disorders. This technology enables precise adjustment of tibial nerve stimulation in real-time, based on individual nerve responses, improving patie...
Researchers created first complete genetic activity map of a branching worm, revealing how it controls reproduction across its multiple body branches. The study highlights the unique genetic toolkit and challenges understanding of animal bodies' organization.
New research from Binghamton University reveals that the topography patterns of wrinkled fingers remain constant after multiple immersions. The study found that blood vessels beneath the skin contract and move in relation to other vessels, resulting in consistent wrinkles.
Researchers discovered neuroestrogen's role in regulating food intake and hunger. Neuroestrogen enhances the brain's responsiveness to leptin, a hormone that helps regulate hunger.
Researchers compared feathers and bodies of flightless birds and their flying relatives, finding that some features change relatively quickly. The study sheds light on evolution of complex traits that lose original function, and could help reveal which fossil birds were flightless.
A fossil therapsid was found in Mallorca with a skull hole for the jaw muscle and structures that evolved into mammals' middle ear bones. The discovery changes scientists' understanding of when therapsids evolved and tells us about where we come from.
Researchers have introduced DSFN to improve the speed and accuracy of diagnoses of retinal disorders. This AI-powered medical imaging technique combines retina images with vascular distribution information to accurately locate the fovea in complex clinical scenarios, enabling doctors to detect early signs of ocular diseases.
A new study finds that the ancient bird Longipteryx ate fruits, contrary to previous hypotheses that it feasted on fish or insects. The discovery was made by analyzing fossilized seeds in the bird's stomach, which suggest a mixed diet including fruits and possibly insects when they were not available.
Researchers studied the anatomy of mudskippers to understand their adaptations to life on land. They found that the fish's muscles in the pectoral fins are bigger and that some bone-connecting tendons were replaced by fascia tissue, providing stability and strength for walking.
A newly discovered fossil, Gaiasia jennyae, reveals a giant salamander-like creature that was a top predator in the ice age before dinosaurs. The creature's unique features, including its toilet seat-shaped head and interlocking jaws, suggest it was an ambush predator.
The e-COL+ project aims to capture and reconstruct France's natural history collections in 3D, covering nearly 6% of the world's total natural specimens. The project will provide modern equipment, create a comprehensive dataset of 3D models, and build AI tools to improve model reconstruction.
Researchers have identified a novel target downstream of parathyroid hormone signaling that suppresses bone formation. Gprc5a negatively regulates osteoblast proliferation and differentiation by partially suppressing BMP signaling, potentially increasing teriparatide effectiveness in non-responding patients.
Researchers found cyclin D1 expression in patients with penile cancer (PC) is associated with clinical and histopathological features. Patients with cyclin D1 expression had lower disease-free survival compared to the cyclin D1-negative group.
Researchers discovered lemurs possess an additional pair of vocal folds, which they believe is responsible for enriching their vocal repertoire and allowing them to exaggerate their size. This adaptation may have provided a selective advantage in competition for territory or mates.
A new reconstruction of the 375-million-year-old fossil fish Tiktaalik reveals that its ribs likely attached to its pelvis, enabling support of the body and potentially leading to the evolution of walking. This discovery provides insights into the major evolutionary transition from fish to four-limbed vertebrates.
Researchers have solved the long-standing question of what triggers the alarm response in fish by identifying two distinct chemical signals: Daniol sulphate and Ostariopterin. These substances convey separate pieces of information that must be detected simultaneously to trigger a flight-or-freeze response.
Researchers from Pusan National University discovered a link between diabetes and periodontitis, showing pro-inflammatory cytokines rise in classical monocytes. The study highlights the systemic impact of these conditions on immune regulation and suggests a potential therapeutic target to reduce diabetes risk.
Scientists discovered a common trait among flying birds, including the number of primary feathers, to determine their evolutionary history. The finding provides clues about dinosaur flight and may inform debates on its origins.
A study found that migratory bats are sensitive to the angle of magnetic inclination and use it for navigation. The soprano pipistrelle bat species calibrated its internal compass at sunset, taking into account both the horizontal component and inclination of the Earth's magnetic field.
Researchers studied over 100 noctilionoid bat species, finding that different dietary types drove modifications in tooth number, size, shape, and position. For instance, fruit-eating bats have shorter jaws with reduced middle premolars, while nectar-feeders have longer jaws with room for more teeth.
Researchers from Binghamton University found that collagen fibers in skin become more tightly packed together, leading to increased stiffness and tissue hardness. This study sheds light on the biological mechanisms behind sun-induced skin changes.
Researchers updated their protein localization prediction model, MULocDeep, to provide more targeted predictions for biological discoveries. The tool helps researchers design more effective experiments and advance scientific discoveries related to drug development and treating diseases like epilepsy.
A new study found that marathon running causes significant damage to extrinsic foot muscles, while intrinsic muscles are less affected. The research suggests that marathon runners can take steps to prevent injuries by prioritizing recovery and muscle fatigue management.
Researchers mapped every thalamic synapse on 15 neurons in layer 2/3 of the visual cortex in mice and found that despite being weak and sparse, they are reliable and efficient representatives of information. The diversity of thalamic inputs underlies these advantages, allowing a small population of neurons to assemble the overall picture.
Great gray owls have a broad disc-like face that acts as radar to find food, while their facial features help correct for sonic distortions caused by snow. The owls' ability to hover above prey allows them to pinpoint location and avoid acoustic mirages created by the snow.
Researchers discovered a unique anatomical design in octopus nerve cords that connects arms symmetrically, providing new insights into alternative nervous system structures. This discovery may aid in the development of new engineered technologies, such as robots and autonomous underwater devices.
A new study reveals how cane toads (Rhinella marina) consume prey by using a complex pulley system of cartilage and muscle. The mechanism involves the hyoid plate, which is attached to muscles and loops like a marionette, pulling food backward into the throat.
Researchers found that mice from western sides of mountains in Patagonia were bigger due to increased food availability caused by higher rainfall. This discovery supports the rain shadow effect hypothesis, which suggests that precipitation patterns can impact mammal size.
Researchers at the Florida Museum of Natural History found that frog forelimbs are not just for jumping, but also for fighting and grasping mates during reproduction. The fused radius and ulna bones provide strength and weight reduction, while also increasing stress on the tendon connecting to the bone.
A national study by UC San Francisco found that basic home blood pressure cuffs and smartphone-connected devices have no significant difference in improving blood pressure control. After six months, patients who used basic cuffs had a lower blood pressure reduction compared to those using Bluetooth-enabled devices.
A recent study published in PLOS Global Public Health found a correlation between perceived stress and hair cortisol concentration in Mexican and Icelandic women. The research suggests that cortisol levels, often associated with stress, can be detected in an individual's hair.
A new study found evidence that multituberculates, an extinct group of mammals, likely reproduced in a placental-like manner. This discovery questions the long-held idea that marsupials were less advanced than placentals in terms of reproductive strategy.
Researchers from Tianjin Medical University General Hospital review sarcopenic obesity's impact on liver disease, including nonalcoholic fatty liver disease and cirrhosis. The study aims to clarify the pathogenesis of sarcopenic obesity and identify potential therapeutic avenues.
A recent review article highlights the crucial role of macrophages in the progression from acute kidney injury (AKI) to chronic kidney disease (CKD). The study suggests that targeting specific signaling pathways and altering macrophage activation can prevent renal fibrosis and CKD. Therapeutic strategies such as clodronate liposomes an...
A newly discovered brain circuit facilitates focusing attention on salient features in the environment by heightening activity in specific microcircuits of the hippocampus. This circuit may play a role in executive functions and cognitive issues like dementia, ADHD, and psychiatric disorders.
Researchers at Binghamton University have discovered that human skin's unique structure allows it to maximize both durability and flexibility. The team created artificial skin membranes that mimicked the structure of mammalian skin, testing their puncture toughness and deformability.
Researchers developed a disposable electrochemical sensor using graphite-based molecularly imprinted polymers to detect theophylline levels. The sensor can identify low concentrations of theophylline (2.5 μg/mL) in whole blood within 3 seconds, enabling real-time monitoring and potential overdose prevention.
A study by Tokyo University of Science researchers has demonstrated that a computationally-light model can simulate complex brain cell responses, including periodic and quasi-periodic responses. The Izhikevich neuron model was found to be capable of reproducing both types of responses at lower computational cost.
A study reveals that Alzheimer's patients experience lethargy due to the degeneration of neurons that keep them awake, not a lack of sleep. Researchers developed a hypothesis that these patients have trouble staying awake and are testing a treatment approach to shut down the system keeping them awake.
Researchers at the University of Pennsylvania School of Medicine have discovered a new type of cell in the human lung with regenerative properties. The cells, called respiratory airway secretory cells (RASCs), line tiny airway branches and can regenerate other cells essential for alveoli functioning.