Articles tagged with Muscles
Scientists at USC have developed CALM technology, allowing for high-resolution imaging of single molecules in living animals. The technique revealed that dystrophin regulates calcium channel fluctuations in muscle cells, leading to impaired muscle activity in muscular dystrophy patients.
Researchers found that a combination of delayed walking and cognitive delays in boys can be an early warning sign for Duchenne muscular dystrophy. This combination may prompt pediatricians to conduct further testing, potentially leading to earlier diagnosis and treatment.
Researchers have developed a new compound for treating spinal muscular atrophy (SMA), a neurodegenerative disease that causes muscles to weaken. The compound, an antisense oligonucleotide, repairs the expression of the SMN2 gene and improves survival rate in mice studies.
A massive study of 3 million general anaesthetics reveals that most episodes of awareness are short-lived, but 51% lead to distress and 41% to longer-term psychological harm. The use of muscle relaxants is a significant risk factor.
Researchers discovered that mice missing TRPML1 calcium channel developed similar muscle defects as those present in muscular dystrophy patients. Increasing the activity of this channel improved muscle membrane repair and restored function. The goal is to develop a drug that can activate TRPML1 for potential treatment in humans.
Researchers found that a muscle, called axochord, runs along the midline of marine worm Platynereis, similar to where the notochord would be in chordates. This discovery suggests that the notochord may have evolved from a muscle-based structure in an ancient ancestor.
Scientists have pinpointed two new genetic target genes SUN1 and SUN2 that may lead to developing new treatments for Emery-Dreifuss muscular dystrophy, a devastating condition causing muscle wasting and stiffening. The discovery opens up new possibilities for patients with the disease, who currently have no effective treatment options.
A new study from the University of Waterloo has discovered exactly why certain sex positions trigger back pain, revealing recommendations for couples to manage their pain during intimacy. The findings suggest that men with flexion-intolerant back pain should replace spooning with doggy-style sex and use a hip-hinging motion.
Researchers at Sanford-Burnham Medical Research Institute have developed a novel technique to promote tissue repair in damaged muscles. Cyclic bursts of a STAT3 inhibitor can replenish muscle stem cells, leading to their differentiation into muscle fibers, which could provide a new therapeutic approach to treating muscle diseases.
A new inherited neuromuscular disorder has been identified, resulting from a genetic mutation disrupting nerve-muscle communication. The condition affects multiple generations and is associated with mutations in the synaptotagmin 2 protein.
Researchers at Wake Forest Baptist Medical Center have successfully mobilized stem cells to form muscle tissue within a biomaterial scaffold. The study, published in Acta Biomaterialia, demonstrates the potential for harnessing the body's natural healing powers to regenerate damaged muscle tissue.
A study of 347 professional baseball pitchers found that those with weak core stability were more likely to miss 30 or more days in a season due to injury. Pitchers with better lumbopelvic control showed less tilt and missed fewer days, suggesting improved performance and reduced risk of injury.
Researchers used autologous vein grafts to bridge 10-mm segments of tibial nerves in rat gastrocnemius muscles, finding no significant differences in muscle spindle reinnervation between experimental groups. This suggests that autologous vein grafts provide comparable sensory reinnervation results as immediate end-to-end anastomosis.
UMN researchers have created an animal model for facioscapulohumeral muscular dystrophy (FSHD), a genetic disorder that causes progressive muscle loss. The model allows for the testing of potential therapies and has revealed new insights into the disease mechanism, including a possible link to skeletal muscle regeneration.
The 'anger face' is a cross-culturally universal facial expression that employs seven distinct muscle groups to signal the emotional state of anger. Researchers found that each component of the face makes an individual appear physically stronger, suggesting it evolved as a threat display to intimidate others.
Research suggests that comprehensive fitness and nutrition regimens can minimize bone and joint health decline and maintain overall physical health in seniors. The study recommends individualized exercise programs with resistance, endurance, flexibility, and balance training, as well as proper nutrition to optimize performance.
Researchers developed algorithms to visualize and predict weak spots in tendons, muscles, and bones prone to tearing or breaking. The new algorithms are 1,000 times more accurate than older methods at quantifying large strains near tiny cracks and tears.
Two women with rare stiff person syndrome (SPS) have been successfully treated, one through auto-HSCT and the other through work and activity resumption. Both patients experienced significant symptom improvement, with the first patient no longer experiencing SPS symptoms after a year and the second able to return to work.
North Carolina State University researchers have developed a technique to attach electrodes to moths during pupation, allowing for the monitoring of electromyographic signals. This enables better understanding of moth flight coordination and the development of remotely-controlled 'biobots' for search and rescue operations.
A University of Kansas professor is leading a grant project investigating the effects of nitric oxide synthase on muscle growth. The study aims to understand how this compound can be used to promote muscle growth in various populations, including athletes and the elderly.
Researchers used CRISPR/Cas9 to correct genetic mutations leading to Duchenne muscular dystrophy in a mouse model, preventing progressive muscle weakness and degeneration. The technique may lead to permanent correction of the disease, offering hope for future therapeutic applications.
Scientists have discovered a new form of dystrophin protein that can be produced through an alternate cellular mechanism in patients with Duchenne muscular dystrophy. This mechanism involves an internal ribosome entry site and could offer a novel therapeutic approach for patients with mutations affecting the first four exons.
Small molecule SMN2 splicing modifiers effectively prevent deficits in SMA mouse models by increasing SMN protein production. The treatment also improves life span and normalizes body weight.
A team led by Dr. Edward Debold is using a single molecule laser trap assay to directly observe muscle fatigue at the molecular level. They aim to understand how metabolites disrupt muscle contraction and develop new drug therapies to enhance function under fatigue-like conditions.
Researchers at the University of Pennsylvania School of Medicine have discovered the atomic structure of tropomodulin, a protein that caps actin filaments and regulates muscle movement. The study provides new insights into how mutations in tropomodulin can cause muscle disorders, such as nemaline myopathy.
Researchers found that mesenchymal stem cells help rejuvenate skeletal muscle after resistance exercise, increasing the rate of repair and enhancing growth and strength. The study's findings may lead to new interventions to combat age-related declines in muscle structure and function.
Researchers found that taking off from a compliant surface like a springboard reduces the energy cost of long jumps compared to firm surfaces. This is due to a closer optimal take-off angle for maximum energy efficiency. For shorter distances, no difference was observed in energy expenditure between firm and springy surfaces.
Scientists at the University of Illinois have developed a new class of walking 'bio-bots' powered by muscle cells, controlled with electrical pulses. The breakthrough allows for unprecedented control over their function, opening up possibilities for environmental and medical applications.
Researchers have identified two genes that may help prevent muscle wastage in humans: survivin and checkpoint kinase 1. These genes are highly active in burrowing frogs that survive dormancy without suffering significant muscle damage.
Researchers identify regulatory molecules involved in creating powerful electrical fields in electric fish, found only in fish and evolved independently half a dozen times. The study reveals a common genetic basis for the electric organ across six diverse species, highlighting convergent evolution in these fascinating creatures.
Researchers found over-activity of enzyme HDAC6 exacerbates ALS symptoms in fruit-flies, highlighting potential therapeutic avenues. Inhibition of HDAC6 may offer protective effects against the disease.
A team of researchers found that the articulation of vowels systematically influences our feelings and vice versa. The study revealed that words containing the long 'i' vowel tend to occur in positive emotional contexts, while those with the long 'o' vowel are associated with negative emotions.
A new transdermal selective androgen receptor modulator (SARM) drug may help older cancer patients build muscle without harming liver function or HDL levels. The novel compound, AUSRM-057, avoids negative impacts on prostate health, making it a promising treatment option.
A study in Australia discovered that some nutritional sports supplements marketed to athletes are secretly fortified with androgens, which are banned from use in sports. The presence of these substances poses recognized health risks to both athletes and the general public.
Patients with metabolic syndrome who exercise before dieting show less muscle loss, according to a new study. Exercising prior to weight loss initiation preserves muscle mass and reduces frailty.
A study published by the Endocrine Society found that low testosterone levels are linked to a higher risk of declining physical function in older men. The researchers also discovered that muscle weakness, possibly caused by decreased testosterone levels, may explain most of this relationship.
A mitochondrial gene defect in the citrate carrier SLC25A1 may underlie deficits in neuromuscular transmission. Investigators identified a homozygous mutation in this gene in two siblings with congenital myasthenic syndrome, characterized by muscle weakness and fatigability.
Men with prostate cancer who played football for 12 weeks experienced significant gains in muscle mass and strength despite undergoing androgen deprivation therapy. The study also highlighted the positive social experiences and desire to remain active that came from playing football.
A study published in the FASEB Journal identified a key gene regulation mechanism associated with age-related muscle loss. The researchers found that older adults had lower levels of microRNAs, small RNA molecules that regulate genes, compared to younger men, which hindered their ability to build muscle after exercise.
Researchers discovered oxytocin's indispensable role in healthy muscle maintenance and repair, finding that it declines with age in mice. Administering oxytocin improved muscle healing in old mice, while blocking its effects compromised their ability to repair tissue.
A study found that statin users engaged in less moderate and vigorous physical activity, while having more sedentary behavior. The possible reasons for this include general muscle pain caused by statins.
Untrained elderly men achieved marked improvements in maximum oxygen uptake, muscle function, and bone mineralization after playing football for four months. The study shows that intense football training can change the lives of elderly men, making it easier to live an active life and overcome physical challenges.
Researchers found that high-intensity exercise activates a single protein called CRTC2, which integrates signals from two pathways to direct muscle adaptation and growth. This results in increased muscle size and improved metabolic parameters.
Researchers used a tracing technique in mice to map the brain circuitry controlling chewing movements. They found shared premotor neurons connecting to multiple motoneurons regulating jaw and tongue movements, suggesting a simple coordination method for safe mealtime.
Older adults who exercised regularly experienced less physical decline than their peers, according to a University of Missouri study. The researchers found that muscle-strengthening exercises, which are crucial for maintaining muscle strength, were often overlooked despite having access to recreational activities and exercise equipment.
Researchers found that men created more new proteins as a result of interval training compared to women. Despite this difference, both men and women experienced similar increases in aerobic capacity. The study suggests that personalized fitness approaches may be necessary for optimal health benefits.
A recent study suggests that the evolution of human brain and brawn are intertwined. Human muscle accumulated more metabolic change than chimpanzees, while the human brain metabolome evolved four times faster. These findings may hold clues to common human metabolic diseases.
Researchers at Brown University discovered that tiny muscles called plagiopatagiales embedded in a bat's wing membrane can adjust stiffness and curvature during flight, fine-tuning aerodynamic performance. The muscles tense on the downstroke and relax on the upstroke, working in synchrony to stiffen the wing.
A study published in the Journal of Nutrition found that consuming protein at each meal can promote optimal muscle growth and maintenance. Researchers discovered that evenly distributing protein throughout the day is crucial for maximizing muscle synthesis rates, whereas a skewed distribution pattern may lead to suboptimal results.
A new minimally invasive method provides obstetricians with detailed information on the anal sphincter innervation before child delivery, enabling them to perform episiotomies safely and minimize damage. The technique has been tested on 250 women in 10 EU countries.
Researchers discovered that tadalafil improves blood flow in the muscles of boys with Duchenne muscular dystrophy, allowing for improved exercise performance. The study found that blood flow abnormalities were present even in boys taking corticosteroids, highlighting a potential new therapeutic strategy for treating the disease.
A study by Cedars-Sinai researchers found that a commonly prescribed drug can restore blood flow to oxygen-starved muscles of boys with Duchenne muscular dystrophy, shortening life expectancy. The results led to a phase III clinical trial for patients with the disease.
GDF11 protein improves the exercise capability of aging mice by making their brains and skeletal muscles more like those of young health mice. The protein also restores DNA damage associated with aging in muscle stem cells, leading to improved function in unmanipulated muscle.
Researchers used ECM from pig bladders to regenerate lost muscle tissue in human trials, improving strength and function in three out of five participants. Muscle growth was confirmed through biopsies and scans, offering hope for patients with severe leg injuries.
A recent study by University of Wisconsin-Madison researchers found that chronic marital stress can make people more vulnerable to depression. Participants who reported higher marital stress had shorter-lived responses to positive images than those reporting more satisfaction in their unions.
A new study published in Female Pelvic Medicine & Reconstructive Surgery found that a specialized yoga program can improve urinary incontinence in women by up to 70%. The six-week program helped women strengthen their pelvic floor muscles and reduce stress-related urine leakage.
A study found that dialysis patients with higher muscle mass had better scores on a 6-minute walking test and improved physical and mental health. Higher body fat measures, such as waist circumference and intra-abdominal fat, were linked to poorer outcomes.
A study published in the Journal of Applied Physiology found that a soy-dairy protein blend prolongs amino acid delivery to muscles for an hour longer than whey alone. The blend also sustained a greater positive net amino acid balance, suggesting less muscle protein breakdown.
Researchers found that mitochondria unable to self-repair are responsible for muscle weakness in both long-time alcoholics and patients with mitochondrial disease. The study identified a key protein, Mfn1, involved in skeletal muscle cell fusion.
A study by researchers at the University of Illinois Chicago found that massage therapy improves systemic circulation and alleviates muscle soreness after exercise. The study also showed that massage has benefits for people regardless of their level of physical activity, improving vascular function in healthy sedentary adults.