Articles tagged with Mutation
Researchers have discovered a genetic mutation associated with motor neurone disease that causes proteins to clump together in motor neurones, leading to their death. The new finding provides strong evidence for protein aggregation as the underlying cause of MND.
Researchers have found a specific genetic cause of schizophrenia that impairs communication between the brain's decision-making and memory hubs. Engineered mice with this mutation show difficulty with working memory tasks, highlighting the importance of connectivity in learning and memory.
Researchers from Indiana University School of Medicine found a genetic link between neurofibromatosis type 1 disease and cardiovascular disease in children. The study suggests that treatments targeting inflammation may be effective in preventing sudden death from cardiovascular disease.
African-American men have a higher incidence and death rate from prostate cancer, with the highest mortality rate of any racial or ethnic group. A new study found an inheritable genetic defect in the receptor for male hormone testosterone that may contribute to its development.
Dr. Andrew Fraser's research focuses on using worms to identify how genetic background affects disease risk, with implications for human health. By studying natural isolates of the worms, researchers can look at how genetic mutations affect phenotypes within a species, providing insights into predictability and variability.
A new study using bioinformatics predicts the molecular cause of many inherited genetic diseases by analyzing tens of thousands of mutations. The research led to the creation of a web-based tool available to academic researchers.
A study by Cincinnati Children's Hospital Medical Center reveals that the loss of a 'guardian angel' gene leads to premature birth due to altered signaling pathways in the pregnant uterus. The findings could lead to new strategies for treating and preventing prematurity.
A study published in Nature Structural & Molecular Biology reveals that a genetic mutation disrupts an array of metabolic pathways in muscle cells by affecting two key proteins. The loss of either protein accounts for most molecular abnormalities associated with the disease, while loss of both also seems to play an important role.
Scientists from CSHL and Hebrew University Medical Center use next-gen sequencing to rapidly identify the mutated TMEM216 gene as the cause of Joubert Syndrome. The study reveals a high carrier rate of 1:92 among Ashkenazi Jews, making it possible to prevent the disease through premarital genetic screening.
Researchers discovered a molecule called Alda-1 that activates the defective enzyme, restoring its ability to metabolize acetaldehyde. The findings suggest a possible treatment for individuals with the enzyme defect, which affects approximately 40% of East Asian populations.
Researchers sequenced over 100 kidney cancer samples, identifying mutations in genes controlling gene expression and chromatin structure. The study reveals genetic complexity in ccRCC, providing insights into diagnosis and treatment options.
Researchers have discovered a common mechanism underlying many diseases of excitability, characterized by overactivity of cells relying on electrical currents. The mutations alter the opening of sodium channels, leading to rapid resurgent currents that trigger second electrical impulses.
Patients with NSCLC and EGFR mutations showed significantly improved progression-free survival with gefitinib treatment. Gefitinib was also better tolerated than chemotherapy, with fewer severe adverse events.
Researchers found that postmortem genetic testing can identify mutations associated with SUD, allowing for targeted assessment and reduced costs. The study estimated a cost savings of $1 million per 150 cases, making it a more affordable option than comprehensive cardiac testing.
A Mayo Clinic study found that genetic testing results are not binary but probabilistic, requiring physicians to meticulously interpret test results. The study also showed that about 4% of healthy Caucasian volunteers have rare variants present in the background noise of genetic tests.
Researchers at UNC School of Medicine discovered a genetic lesion associated with schizophrenia disrupts brain development, altering neuron numbers and GABAergic cell placement. This finding supports the neurodevelopmental hypothesis, offering new avenues for understanding the disease's molecular mechanisms and potential biomarkers.
Researchers have identified a genetic factor that increases the risk of sudden cardiac death in patients with congenital long-QT syndrome. Variants of the gene NOS1AP were found to predispose individuals to a worse form of the disease, leading to longer QT intervals and increased symptoms.
A study tracked genetic mutations in a roundworm over 5,000 years, finding that oxidative DNA damage is a primary cause of mutations. The research also showed that natural selection affects previously thought-to-be 'junk' DNA, suggesting new biological roles.
A new bioinformatics study evaluates the reliability of computer models predicting DNA mutation effects on human health. The research team identified regions of the genome where benign mutations tend to occur, allowing for more accurate predictions.
Researchers at Scripps Research Institute have identified a genetic cause of progressive hearing loss, linking it to the Loxhd1 gene. The study found that mutations in Loxhd1 lead to degradation of hair cells and disruption of hearing processes.
A recent study by Dr. Basil Petrof reveals that the CFTR gene is involved in calcium regulation in skeletal muscles, contributing to muscle atrophy and weakness in cystic fibrosis patients. The research also suggests that controlling inflammation and infection may be key to treating CF-related muscle atrophy.
Researchers have identified a genetic mutation in mitochondrial DNA that causes sensory ataxic neuropathy (SAN) in Golden Retriever dogs. The mutation leads to progressive loss of neurons, affecting about five percent of the current Swedish Golden Retriever population.
A new mouse model has been created to understand human neuronal diseases that impair feeling and movement. The mouse model mimics symptoms of Charcot-Marie-Tooth and hereditary motor neuronopathy, two conditions with no effective treatments.
Genetic screening for cystic fibrosis carrier mutations is universally recommended for the reproductive-age population. New reference materials have been developed to ensure accuracy in genetic testing, but some mutations may lead to false results due to large deletions or interference with laboratory methods.
Researchers traced a genetic mutation in the Fry family, who arrived in Massachusetts colony in the 1630s, to its impact on colon cancer. Through routine screening and education, individuals with the mutated gene can prevent cancer.
A recent study identified a rare genetic heart disorder, Danon disease, characterized by rapid clinical deterioration and early death in young patients. The study revealed that the natural course of this disease is often fatal, with significant cardiac complications and poor outcomes despite advanced treatment strategies.
A study by the Wellcome Trust Sanger Institute suggests that around 1 in 200 human genes may be unnecessary for human health. The researchers found that single-letter changes in genetic code can disrupt proteins, leading to variations that are either beneficial or have little consequence.
Research from Albert Einstein College of Medicine found that Ashkenazi Jewish men carrying specific gene mutations have a higher risk of developing aggressive prostate cancer. The study identified three particular mutations, including BRCA1-185delAG and the mutated BRCA2 gene, which increased the risk of high-grade tumors.
Researchers at Uppsala University identified fast-evolving human genes with patterns of molecular evolution not driven by natural selection. Instead, biased gene conversion (BGC) speeds up the rate of evolution in certain genes, fixing harmful mutations.
A genetic study found that 4% of Indian subcontinent populations carry a MYBPC3 mutation, associated with a high risk of heart problems. Researchers identify a potential solution through early screening and lifestyle modifications.
Scientists have discovered a new syndrome associated with severe congenital neutropenia, linked to mutations in the G6PC3 gene. The study found that these mutations affect glucose levels, leading to cellular stress and immune system dysfunction, potentially relevant to other diseases.
UBC researchers have discovered a gene mutation in GNAQ that is responsible for 45% of uveal melanoma cases. This finding may lead to the development of therapeutic interventions against some melanomas.
A team of researchers has discovered MEDNIK Syndrome, a debilitating genetic syndrome characterized by mental retardation, enteropathy, deafness, and peripheral neuropathy. The AP1S1 gene mutation causes this disorder, affecting development in the skin and spinal cord.
Research by the M.I.N.D. Institute shows that mutations of the fragile X gene cause a range of diseases, including neurodevelopmental delays, autism, infertility, and neurodegenerative disease in older adults. The institute urges testing for all patients who show signs of diseases linked to FMR1 mutations.
A study published in JAMA Network found an association between male birth defects and certain genetic mutations, including Klinefelter syndrome and INSL3 receptor gene mutations. The research suggests a higher risk of infertility and testicular cancer in men with cryptorchidism, highlighting the importance of genetic testing.
Researchers have identified a gene mutation in Dalmatians that causes high uric acid levels and bladder stones, which can be eliminated through breeding programs. The SLC2A9 gene, also found in humans and great apes, is responsible for the elevated uric acid levels in Dalmatians.
Researchers propose that organisms can learn environment rules and develop modular designs storing history information in their genome, generating useful novelties for new environments.
A recent study suggests that seasonal affective disorder (SAD) may be linked to a genetic mutation in the eye's melanopsin gene. Individuals with this mutation are five times more likely to experience SAD symptoms, highlighting a potential genetic predisposition to the condition.
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 Washington University School of Medicine have identified the first gene linked to clubfoot in humans, PITX1. The mutation was found in all affected family members and carriers, providing a crucial step towards improved genetic counseling and novel therapies.
Researchers have discovered 26 new genes linked to lung adenocarcinoma, a type of non-small cell lung cancer. The study's findings suggest that these genetic alterations can be targeted with specific treatments, offering new hope for patients.
Researchers discovered that a naturally occurring gene mutation in worms leads to reduced sensitivity to alcohol's effects, enabling the body to consume more without adverse reactions. The study suggests potential applications in identifying individuals with a predisposition to alcoholism.
Researchers at Children's Hospital of Pittsburgh identified a genetic mutation associated with organ rejection in children. The study used a novel combination of genetic technologies to analyze DNA samples from 80 children who received liver transplants and their parents.
Researchers found that computer models underpredicted BRCA mutation frequency in Asian-American women by 50% compared to Caucasian counterparts. This suggests that more women of Asian descent may be at increased risk of hereditary breast and ovarian cancers than previously believed.
A genetic mutation in the Prion Protein Gene is linked to mad cow disease, according to a new study by Kansas State University researcher Juergen A. Richt. The mutation affects less than 1 in 2,000 cattle and can be combated through selective breeding and culling of genetically affected animals.
A Stanford study found that computer models used to identify breast cancer mutations in white women were less accurate for Asian women. The researchers sequenced the genes of 200 Asian-American women and compared them to the models' predictions, finding that both programs performed poorly in predicting the presence of mutations. This u...
Genetic mutations and lower growth rates found among crustaceans in Parramatta River due to heavy metal exposure, suggesting permanent negative impacts on species fertility and survival. Researchers used a sensitive test organism, Melita plumulosa, to assess toxicity of marine sediments.
A Phase 2 trial of PTC124 demonstrated statistically significant improvements in CFTR-mediated chloride transport and lung function in patients with nonsense-mutation CF. The study showed that PTC124 induced chloride transport responses across various patient genotypes, offering a potential new treatment paradigm for this genetic disease.
A study by Uppsala University has identified the genetic mutation responsible for white horses' coats and found a link to an increased risk of melanoma. The dominant Greying with age mutation is shared among Grey horses, suggesting a common ancestor lived thousands of years ago.
Researchers developed computer models of RNA molecules evolving by mutation and natural selection, showing that optimal organisms often require a long sequence of interacting mutations. This challenges the idea that natural selection always leads to the best possible organisms in the long run.
Researchers identified six genes associated with autism by analyzing large Middle Eastern families where both parents shared a recent ancestor. The study suggests that these genes affect learning and memory, and may be treatable through gene therapy or enriched learning environments.
A new microchip-based device can analyze tumor cells in the bloodstream to identify genetic signatures of dangerous lung cancers, enabling targeted treatment and monitoring. The device detected mutations 92% of the time and showed promise for non-invasive continuous monitoring.
Researchers discovered a new family of genetic mutations involved in inflammatory intestinal diseases, including coeliac disease and Crohn's disease. The study found common origins for the two diseases and identified eight new areas with genes controlling immune responses.
Researchers have found that aminoglycosides and a new compound NB30 can suppress nonsense mutations in Usher syndrome, potentially delaying vision loss. The study aims to develop therapy to delay the progression of USH1-related disease.
A study by Columbia University Irving Medical Center researchers has identified rare spontaneous copy number mutations in the genomes of individuals with schizophrenia, accounting for at least 10% of non-familial cases. These genetic mutations were found to be present in affected individuals but not in their biological parents.
Scientists have identified a genetic mutation responsible for impaired fetal movement, which can lead to multiple miscarriages and birth defects. The mutation affects the acetylcholine receptor pathway, disrupting normal muscle function and fetal development.
A study found that people with nonfamilial schizophrenia harbor eight times more spontaneous mutations than healthy controls, primarily affecting brain development pathways. This suggests that rare genetic variations contribute to the vulnerability of individuals without a family history of the illness.
Human cells have a natural surveillance system called nonsense-mediated mRNA decay (NMD) that detects and eliminates flawed mRNAs, which can cause genetic diseases. The study reveals that repression of protein synthesis during NMD is controlled by the attachment of phosphate groups to human UPF1.
Recent research has identified seven LRRK2 gene mutations associated with Parkinson's disease, including a rare mutation that doubles the risk in ethnic Chinese. The findings suggest that genetic influences passed down through generations can significantly increase susceptibility to the disease.
A new mouse model has granted insight into the genetic and molecular mechanisms underlying acute myeloid leukemia. The study reveals that a specific mutation triggers innate genetic programmes allowing white blood cells to proliferate uncontrollably.