Articles tagged with Hair Cells
New findings reveal how hair cells amplify sound at specific frequencies, a process missing in current hearing aids. The discovery may inspire the development of next-generation cochlear implants with location- and frequency-specific amplification.
Researchers have found that supporting cells in the inner ear can actively help repair damaged sensory hair cells, potentially offering a pathway to prevent hearing loss. The study suggests that these cells produce heat shock protein 70 (HSP70), which protects neighboring hair cells from death.
Researchers at the National Institutes of Health found that HSP70 produced by supporting cells in the inner ear prevents antibiotic-induced hair cell death. Extracellular HSP70 has potential to be used therapeutically to prevent aminoglycoside-induced hearing loss, currently without treatments.
Researchers found that rapamycin increased longevity in mice by reducing cancer rates and improving memory and spatial learning. However, the drug had limited effects on age-related symptoms such as cardiovascular function, muscle mass, and balance. The study suggests that rapamycin may be useful for treating some age-related conditions.
A recent study used lentiviruses to deliver the Atoh1 gene to the cochlea of rats, resulting in increased transdifferentiation of supporting cells into hair cells. The treatment had no negative impact on auditory functions or hair cell numbers, suggesting a potential new approach for treating sensorineural hearing loss.
Researchers at Indiana University have successfully created the inner ear from stem cells using a three-dimensional cell culture method. The discovery provides insights into the sensory organ's developmental process and offers potential for laboratory models of disease and treatments for hearing loss and balance disorders.
A team of NIH-supported researchers has identified a two-step process that occurs during the growth and regeneration of inner ear tip links. The discovery provides a possible mechanism for potential interventions that could preserve hearing in individuals with genetic disorders related to tip link dysfunction.
Researchers have discovered a novel genetic mutation in the SERPINB6 gene that causes malfunction of an inhibitor enzyme, leading to accelerated hearing loss. In humans, individuals with this mutation typically lose their hearing from 20 years of age, while mice with the condition start losing their hearing at three weeks old.
Researchers at Stanford University School of Medicine have identified a group of progenitor cells in the inner ear that can become sensory hair cells and supporting cells. These findings may lead to new ways to treat hearing loss and deafness, and could potentially aid patients with damaged or impaired sensory hair cells.
Researchers have discovered a genetic mutation in the NESP4 gene, which disrupts the LINC complex and leads to hearing loss. The study highlights the importance of nuclear positioning for normal hearing.
Scientists have successfully regenerated sound sensing cells in mice with noise-induced deafness, partially reversing their hearing loss. The technique involves inhibiting the Notch signaling pathway to promote hair cell differentiation from surrounding supporting cells.
Scientists have successfully regenerated sensory hair cells in an adult mammalian ear using a drug, resulting in partial recovery of hearing in mice. The breakthrough holds promise for future therapeutic applications to reverse deafness in humans.
Researchers at Scripps Research Institute discover TMHS protein, a key component of mechanotransduction channels in the ear. The finding suggests a promising new approach to gene therapy for certain types of deafness, as it restores sound perception in newborn deaf mice.
Researchers develop new approach to designing antibiotics that target bacterial ribosomes without damaging hair cells, addressing ototoxicity. Apramycin shows promise against drug-resistant TB and other 'superbugs' without causing hearing loss.
Researchers have shown that gene therapy can induce the formation of extra sensory hair cells in young mice, but this approach has limitations in older animals. Introducing a specific gene called Atoh1 into the cochleae of young mice can produce electrical signals and connect with neurons.
The discovery of a previously unknown root extension in hair cells suggests the brain regulates sound sensitivity and head position. This finding challenges current understanding of how hair cells work, with the striated organelle connecting the rootlets to the cell membrane enabling feedback from the cell to the detectors.
Researchers discuss advancements in cochlear implant technology and spiral ganglion cell regeneration, aiming to improve sound localization and processing. They also explore strategies for auditory training of older adults to enhance speech understanding in noisy environments.
Researchers have identified a crucial role for FGF20 in the development of the mouse inner ear, revealing a potential target for regenerating outer hair cells and treating human deafness.
The FGF20 gene is required for proper development of the mouse inner ear, and its inactivation leads to a loss of outer hair cells. Researchers found that FGF20 signaling must occur on or before day 14 of embryonic development to produce a normal inner ear.
Researchers have identified two key proteins, TMC1 and TMC2, that are crucial for the inner ear's transduction channel. The study suggests that TMC1 is essential for hearing, while TMC2 is not, but can substitute for it in the vestibular system.
Researchers have identified long-sought genes in sensory hair cells of the inner ear that are essential for converting sound waves into electrical signals. By introducing these genes into deaf mice, scientists were able to restore electrical signals and potentially reverse a type of deafness, paving the way for a gene therapy trial.
Neuroscientists at UC Berkeley have discovered a new approach to treating tinnitus by retraining the brain, targeting areas that have lost input from the ear. The study also found that drugs can boost inhibitors to reduce spontaneous firing of idle neurons in the auditory cortex.
Researchers found that growth hormone stimulates cell proliferation in zebrafish inner ears, particularly those of the utricle vestibular organ involved in balance. This discovery may lead to new treatments for human hair cell loss and ear injuries.
Researchers at the University of Iowa have identified a new function for the harmonin protein, which is mutated in Usher syndrome. The protein plays a critical role in transmitting sound information to the brain.
Vibrations in the inner ear persist even after a sound has stopped, potentially serving as a short-term memory of past stimuli. This phenomenon may help explain why some gaps between sounds are too brief to be perceived by the human ear.
Researchers at the University of Utah discovered that invisible infrared light can activate rat heart cells and toadfish inner-ear cells, sparking potential breakthroughs in cochlear implants for deafness. The study also raises possibilities for optical pacemakers that use infrared signals instead of electrical signals.
Researchers at Northwestern University are developing artificial hair cell sensors that mimic nature's ability to sense vibrations and movement. These biologically inspired sensors have the potential to improve medical device performance, enhance robotic capabilities, and create new consumer goods.
Researchers identified miR-96 as a key regulator of auditory sensory hair cell development. The study revealed that mutations in this microRNA prevent the normal progression of hair cell development, leading to deafness. This breakthrough discovery opens new avenues for developing treatments for progressive hearing loss and deafness.
Researchers have made significant discoveries about squid hearing mechanisms, shedding light on how they navigate, sense danger, and communicate with each other. Squid use statocysts to detect sound waves, but their hearing is limited to specific frequencies, which may explain why they are a prolific food source.
Scientists have discovered a cell-to-cell signaling pathway that designates the future location of ear's sensory organs in embryonic mice. By activating this signal, they were able to induce patches of new sensory tissue with hair cells and support cells. This breakthrough suggests a potential avenue for regenerating sensory organs in ...
Researchers found significant changes in hearing sensitivity after exposure to MP3 player noise, suggesting potential long-term risks. The study suggests that portable media players may be harmful to young adults' hearing.
Researchers have successfully generated mouse cells that resemble human inner-ear hair cells in a petri dish. This breakthrough could lead to significant scientific and clinical advances along the path to curing deafness. The study provides a protocol for generating millions of functional hair cells from renewable sources.
Researchers have found that hair cells in the inner ear amplify even the faintest sounds, a phenomenon also observed in the vestibular system. This discovery sheds light on how our brains interpret head movements and balance, revealing a shared amplification mechanism between auditory and vestibular systems.
Scientists at Queen Mary University of London have discovered that dolphins and bats evolved the same specialized inner-ear hair cells for echolocation, resulting in identical genetic changes. This unprecedented example of convergence highlights the complexity of evolutionary processes.
The discovery of Sox2, a protein that regulates stem cell formation, is crucial for spiral ganglion neuron development. The study's findings may lead to the regeneration of these nerve cells, potentially revolutionizing cochlear implant technology and biological treatments for hearing loss.
Scientists have identified a new type of cell in the inner ear that carries sound signals to the brain, responding only to extremely loud sounds. The discovery sheds light on how the human ear processes sound and may have implications for understanding hearing loss.
A Monash University study has identified the role of microscopic antennas in the kidney's repair process, shedding light on a potentially fatal disease. The research, led by Dr. James Deane, showed how hair-like structures called cilia change their length in response to injury, amplifying signals that turn off the repair process.
Researchers have finally proven the link between Merkel cells and light touch sensation, a discovery that resolves a 100-year-old mystery in neuroscience. The study found that Merkel cells, typically associated with texture and shape perception, play a crucial role in detecting light touch.
Researchers at Scripps Institute have identified a molecular defect involved in hearing loss, which sheds new light on the workings of mechanotransduction. This finding may lead to better understanding of similar processes and defects that cause disease.
Scientists found ion channels on middle and shortest rows of stereocilia, not as previously thought. The discovery could lead to new treatments for hearing loss and deafness by understanding the adaptation process.
A new study by University of Utah researchers reveals that tiny hair-like tubes atop hair cells in the ear act as flexoelectric motors to amplify sound mechanically. This discovery sheds light on how humans can hear very quiet sounds, and may also have implications for our sense of balance.
A team of researchers identified two critical microRNAs that lead to abnormal ear development and progressive hearing loss when removed. The study also found potential for using these molecules as a regenerative tool to treat deafness and balance disorders.
A new study by Prof. Karen Avraham at Tel Aviv University has discovered that microRNAs are involved in the development of deafness, opening up new avenues for treatment and potential cure. The researchers found that microRNAs help regulate cell functions in the ear, and their loss can lead to progressive hearing loss.
The university is exploring the impact of molecular pathways on inner ear dysfunction in Usher Syndrome, a clinically and genetically heterogeneous disorder causing congenital deafness and retinitis pigmentosa. The grant aims to prevent hair cell death and promote otoprotection therapy.
Researchers have successfully isolated human auditory stem cells from fetal cochleae and found they can differentiate into sensory hair cells and neurons. This breakthrough has the potential to develop a new treatment for deafness, with implications for studying ear development and modeling drug screening.
A new mouse mutant has been identified that mimics human progressive hearing loss, with features in common with existing forms of deafness. The mutation affects the Atp2b2 gene, leading to degeneration of hair cells in the inner ear.
Researchers at St. Jude Children's Research Hospital found that the prestin protein embedded in outer hair cell membranes plays a critical role in amplifying sound signals. This discovery sheds light on the mechanisms behind acute hearing loss due to genetic mutations or drug overdoses.
Researchers found clumps of previously-unreported callus hairs growing in mature apples, which may impact commercial growers' storage strategies. The presence of these hairs could reduce the efficiency of gas transport through fruit, leading to internal browning.
Researchers used zebrafish to screen for genes and chemical compounds that protect against hair cell damage caused by ototoxic medicines. They identified five mutations in genes that provided protection and two compounds that robustly protected hair cells.
Researchers developed a zebrafish-based screening strategy to identify genes and chemical compounds that protect against hearing loss caused by ototoxic medications. The study identified five mutations in genes that, when inherited, protected hair cells from damage.
Researchers at Cold Spring Harbor Laboratory found that BMP signaling in dermal papilla cells is essential for hair growth. Deletion of the receptor for bone morphogenetic protein 1a (BMPR1a) in DP cells prevented hair follicle formation, while intact BMPR1a and additional BMP protein promoted hair growth.
Researchers developed a new wound dressing using hair follicular cells that increased wound closure rates by two times compared to control subjects. The technique provides an effective biodressing that maintains structural strength during healing, promising early-stage wound healing improvements.
Researchers at Rutgers University have made a breakthrough in understanding the complex mechanisms behind cochlear implants. By studying the role of neurotrophin proteins, they may be able to develop a new generation of implants that can improve hearing for all patients, regardless of their level of impairment.
Researchers at Baylor College of Medicine discovered that cholesterol levels in outer hair cell membranes impact hearing. Depleting cholesterol resulted in hearing loss, while adding it initially increased hearing but later led to a decline.
Researchers found that support cells in developing ears show robust electrical activity similar to nerve cells, which helps explain how the auditory system generates brain activity without sound. This discovery may also contribute to tinnitus and sounds perceived from nowhere.
A new method has been developed to grow inner ear hair cells in the laboratory, providing a reliable source of cells for research. This breakthrough is expected to accelerate therapeutic advancements for millions of people worldwide affected by hearing and balance impairments.
Scientists have developed a breakthrough laboratory technique to isolate and grow hair cells, essential sound detectors in the inner ear. This new method provides a reliable source for researchers studying inner-ear disorders, including hearing loss and balance problems.
Researchers at St. Jude Children's Research Hospital have solved the long-standing mystery of how mammalian ears amplify sound, concluding that movement of cilia atop hair cells dominates response in non-mammals but somatic motility drives amplification in mammals.
Scientists have discovered a way to transfer genes into diseased tissue of the human inner ear, aiming to restore hearing. The breakthrough could lead to the development of gene therapy compounds that produce new hair cells and restore hearing function in humans.
Scientists at Case Western Reserve University have isolated cochlear stem cells, which may regenerate damaged hair cells and restore normal hearing. The discovery offers a potential therapy for noise-induced and genetic hearing loss affecting millions worldwide.