Articles tagged with Mutation
Scientists at the University of Washington have identified 21 newly occurring genetic mutations in children with autism spectrum disorder, many of which altered proteins. The study suggests that these sporadic mutations could contribute substantially to the underlying mechanisms and severity of autism in approximately 20 percent of cases.
A study by MIT researchers calculated the likelihood of a particular evolutionary adaptation reversing itself. They found that only a small percentage of evolutionary adaptations in drug-resistance genes can be reversed, but only if they involve fewer than four discrete genetic mutations.
Scientists have identified a single amino acid change in the chikungunya virus' exterior protein that enables it to infect Aedes albopictus mosquitoes, allowing for rapid spread across India and Southeast Asia. The discovery sheds light on why outbreaks occurred despite previous strains being present in the region.
Researchers identified a genetic mutation causing fatal developmental disease MOPD1, affecting fetal growth and brain development. The mutation is prevalent in the Ohio Amish population, with approximately 6% prevalence.
Researchers at Vanderbilt University identified a new gene, KCNV2, that influences the risk of developing epilepsy. The gene codes for a unique potassium channel protein and alters electrical activity in nerve cells, leading to seizures.
A study of pregnant women with autoimmune diseases found specific genetic mutations associated with preeclampsia. The research suggests new genetic targets for treatment and potential tests to identify women at risk of developing the condition.
Brown University researcher Robert Reenan has created mutant fruit flies that mimic human epilepsy, with the goal of finding genes that can suppress seizures. By using a unique technique called homologous recombination, Reenan hopes to induce mutations in the flies that may lead to a genetic cure for epilepsy.
Researchers found a genetic mutation caused by vitamin A that suppressed feather growth, leading to the distinctive naked neck appearance. This discovery has implications for understanding bird evolution and could improve poultry production in hot climates.
A complex genetic mutation triggered by a vitamin A-derived substance caused the development of bald necks in Transylvanian naked neck chickens. The mutation led to enhanced production of an inhibitory protein called BMP12, resulting in an outstanding bald neck.
Researchers at MIT have identified a single mutation in the H1N1 genetic makeup that would allow it to be much more easily transmitted between people. The finding should give the World Health Organization something to watch out for, as new strains of the virus may emerge with greater ability to infect humans.
Researchers identified a dominant Indo-European mutation in Spain and its spread to America, linked to high prevalence on La Palma and Brazil. The study mapped over 130 pathogenic mutations, revealing the mutation's impact on DNA repair pathways and cancer risk.
Researchers found a rare genetic glitch in patients with schizophrenia that could lead to improved treatments. The VIPR2 gene mutation was linked to overactive VIP activity, which can impact brain development and learning, offering potential targets for new therapies.
Researchers developed a new approach to predict which flu strain will be prevalent in a given year by tracking pairs of genetic changes. This method offers insights into epistasis, where mutations interact with each other to affect the virus's fitness. By analyzing these interactions, scientists can gain early warnings of emerging muta...
Researchers found that two genetic mutations can trigger hypertension in severe cases, affecting up to one-third of patients with a common cause. The mutations affect potassium channels and aldosterone release, leading to adrenal tumor formation and severe high blood pressure.
Researchers have found a genetic cause for benign hormone-producing tumours in the adrenal gland that lead to high blood pressure. The mutation affects a potassium channel, resulting in excessive aldosterone production and elevated blood pressure.
Long QT syndrome affects approximately 1 in 2500 people and can cause torsade de pointes episodes leading to sudden death. Researchers identified KCNH2 as the most frequent mutation in patients with long QT syndrome, highlighting the potential for genetic testing to diagnose the condition in carriers without symptoms.
A Mayo Clinic research team has pinpointed the function of the MMSET gene, revealing how it enables disease-causing mutations to occur. Normally-functioning MMSET plays a restorative role within the genome, but when impaired, cells lose the correct response to DNA damage.
Researchers at Mayo Clinic have identified a gene variant that appears to protect against frontotemporal lobar degeneration (FTLD) in high-risk individuals with progranulin mutations. The study found that carrying two copies of the protective TMEM106B allele delays or prevents FTLD onset, suggesting it may increase progranulin levels.
A study of 61 adults found that 86.9% of parents with a genetic mutation supporting melanoma testing in their children cited increased risk awareness as a reason. Participants believed genetic testing could lead to improved prevention and screening behavior, such as reduced sun exposure and protective clothing use.
A new study identifies a previously unrecognized mutation in the valosin-containing protein (VCP) gene, which causes an inherited form of amyotrophic lateral sclerosis (ALS). The research provides new insight into the disease's underlying pathology and validates the exome sequencing technique for identifying genetic causes.
Researchers have identified genetic mutations associated with elevated PSA levels in men diagnosed with prostate cancer, offering potential new biomarkers for disease monitoring. The study's findings suggest that sequencing of selected mitochondrial regions could provide valuable information for prognosis.
Scientists at Johns Hopkins have identified a glutaminase inhibitor that slows cancer cell growth by blocking the sugar-based building blocks. The compound has shown promise in reducing cancer cell growth by 30% and may be used for many types of primary brain tumors.
Researchers developed a comprehensive genetic test that can screen all 54 known deafness-causing genes in one run, costing $2,000. The new OtoSCOPE test offers quicker answers for families anxious to determine treatment options or learn the likelihood of future children having hearing loss.
A study has identified two key signaling pathways - Ras/MAPK and Rac/Stat3 - that are activated in the hearts of mice with a Noonan syndrome-associated Sos1 mutation. These pathways may be crucial for understanding the development of heart defects in individuals with the disorder.
Newfoundland researchers have cracked the genetic code of arrhythmogenic right ventricular cardiomyopathy (ARVC), a rare genetic condition causing sudden cardiac death. The team developed an implantable cardiodefibrillator program to prevent fatal arrhythmic events, significantly improving survival rates among high-risk individuals.
A genetic mutation in the production of selenocysteine leads to progressive brain atrophy and severe mental retardation and epilepsy. The defect affects 1 in 40 Jews of Moroccan and Iraqi ancestry, making prenatal genetic screening a crucial preventive measure.
University of Oregon researchers discovered that good bacteria modulate the Wnt signaling pathway, which is also associated with colorectal cancer. This finding suggests that microbial signals may play a significant role in cancer risk, and targeted therapy may be possible.
An Australian study discovered a rare genetic form of epilepsy can originate from an embryonic genetic mutation, challenging previous assumptions about its inheritance. Researchers believe this finding may have implications for siblings of individuals with other genetic diseases that could be caused by an embryo mutation.
Researchers identified a defective ABCB4 gene that impairs cholesterol excretion, leading to high levels of bad cholesterol. The study used laboratory opossums and found that the gene plays a role in controlling blood cholesterol levels in response to dietary cholesterol.
The NCAA's new sickle cell screening program for college athletes aims to prevent rare complications, but experts warn of hasty implementation and unaddressed consequences. The program may identify 400-500 new cases annually, affecting nearly 170,000 athletes.
Scientists at Max Planck Institute successfully analyze all genes in human genome simultaneously to identify mutation causing Mabry Syndrome. The new process reveals a mutation in PIGV gene leading to mental retardation and other symptoms.
Researchers identify a genetic mutation in the immune system causing chronic kidney disease in Cypriot families, with symptoms including blood in the urine and progressive kidney malfunction. The mutation dates back to a single common ancestor over 16 generations ago.
Researchers have identified a rare form of kidney disease linked to a genetic mutation in the innate immune system, causing progressive kidney malfunction and blood in urine. The condition, named CFHR5 nephropathy, has been found in over 100 people of Cypriot descent and is potentially serious but can be detected through DNA testing.
A new statistical method confirms that mitochondrial Eve, the mother of all humans, lived around 200,000 years ago. The study compared 10 human genetic models and found that they produced similar estimates, suggesting that refining assumptions beyond a certain point is not crucial in capturing the big picture.
Researchers have identified a novel mutation in a mouse gene that may contribute to the genetic roots of alcoholism. The mutation, called Lightweight, affects sensitivity to alcohol and voluntarily consumed more alcohol by mutant mice. Further studies are needed to determine if this pathway is relevant to humans.
A UCSF-led team has discovered a direct link between an inherited genetic mutation, developmental abnormalities, and juvenile myelomonocytic leukemia (JMML), a rare form of childhood cancer. The study found that germline CBL mutations are inherited in nearly half the families affected by JMML.
Researchers have discovered two mutations in the PTPN11 gene that cause metachondromatosis, a rare heritable disease. The study's findings suggest that next-gen sequencing may rapidly resolve familial diseases and provide insights into other related syndromes.
A research team at McGill University Health Centre has developed a rapid genome sequencing process to identify genetic diseases, promising personalized treatments for patients. The new approach can isolate genes responsible for hereditary diseases within two weeks, revolutionizing the screening and treatment of genetic disorders.
Researchers at the University of Pittsburgh have discovered a genetic mutation linked to lymphatic dysfunction, which could lead to a first-ever target for drug therapy for lymphedema. The study identified mutations in the GJC2 gene that impair cell signaling, leading to fluid accumulation and tissue swelling.
Researchers at Heidelberg University Hospital have identified new mutations in the SHANK2 gene that contribute to autism and mental retardation. The study found that a correct inner structure of nerve cell synapses is necessary for normal language, social competence, and cognitive development.
A new study has uncovered two more genes associated with autism, furthering evidence of the disorder's genetic foundation. The research also suggests that environmental factors may play a role in the development of autism in susceptible individuals.
Researchers have made significant progress in treating inherited diseases by suppressing DNA mutations, with a promising experimental drug ataluren showing potential for cystic fibrosis treatment. The drug's selectiveness offers hope for targeting specific disease-causing mutations while sparing healthy genes.
A new experimental drug called ataluren has shown promise in treating cystic fibrosis and over 2,400 genetic disorders caused by nonsense mutations. The drug works by restoring up to 29% of normal protein function in mice with cystic fibrosis, offering hope for improved treatment options.
Researchers found that only patients with a specific genetic mutation are eligible for gene therapy, which has shown promising results in treating Leber congenital amaurosis. Genetic testing can detect changes in the genome, but accurate interpretation is crucial to ensure correct treatment.
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.