Articles tagged with Genetic Analysis
A study analyzing ancient DNA from Tibetan Plateau remains found that prehistoric bovids were genetically similar to modern Asian wild gaurs and diverged approximately 18,000 years ago. Rhinoceroses roamed the region between 8,000 to 6,000 years ago, suggesting a warm and moist environment at the time.
Researchers found genes involved in sensory perception showed accelerated evolution, including those for light perception, dim-light vision, and retina development. The study also identified 32 genes related to DNA packaging and chromosome condensation, which may enable owls to channel light more efficiently.
Researchers have developed a blood test that uses cell-free DNA to predict pregnancy complications such as ischemic placental disease and gestational diabetes. The study found that certain genetic signatures in the mother's blood during the first trimester can indicate these serious complications.
Rover Diagnostics' affordable and portable point-of-care test provides reverse transcription polymerase chain reaction (RT-PCR) results in eight minutes, faster than any other test of its kind. The platform is designed to be targeted at locations where rapid turnaround results are important.
A study of 45,000 healthy adults found associations between 160 genes and brain shrinkage in the cortex, a dimply outer layer of the brain. The findings may lead to new targets for developing drugs to intervene before disease symptoms appear.
A genetic analysis of over 850,000 Europeans found a link between obesity-related genes and an increased risk of rheumatoid arthritis. Obesity was shown to be associated with a higher risk of rheumatoid arthritis for both men and women.
A team of entomologists from St. Petersburg State University has discovered a new species of tropical Heteroptera, Tatupa grafei, characterized by its golden color and distinctive long antennae. The discovery sheds light on the biodiversity of the island of Borneo and highlights the importance of preserving these unique organisms.
Researchers found that irisin altered the expression of genes regulating ACE-2, a key protein in viral entry. Irisin also tripled levels of TRIB3 transcription, which has been linked to lower replication of SARS-CoV-2. The study suggests irisin's therapeutic potential for COVID-19 treatment.
A study found genetic variants associated with a dental anomaly and smaller body size in dogs, particularly in toy breeds. These variants affect the processing of growth hormone and RNA enzymes, leading to reduced height and weight.
Scientists have identified a novel R gene in a diploid wild potato that confers high resistance to the oomycete Phytophthora infestans, the causative agent of late blight. This discovery provides new resources for breeding improved potato varieties and offers insights into the mechanisms underlying plant immunity.
Researchers have confirmed that variants in the LMNB1 gene cause syndromic microcephaly by disrupting the nuclear envelope, leading to misshapen nuclei and impaired function. The study highlights a new genetic cause of congenital abnormalities and broadens the understanding of laminopathies.
KAUST scientists propose a roadmap for molecular ecologists, policymakers, and stakeholders to collaborate on DNA-based approaches for marine monitoring. DNA barcoding and metabarcoding can save time and money by identifying species from small DNA fragments.
Domestic horses probably did not originate in Anatolia, according to a new study of ancient horse remains. The researchers found that nonlocal genetic lineages appeared suddenly in about 2000 BCE, suggesting an origin in nearby Black Sea regions.
Researchers at Colorado State University found a genetic mutation associated with dogs having hypothyroidism being less likely to develop T-zone lymphoma. The study suggests that a region of chromosome 8 linked to thyroid hormone regulation may play a crucial role in the development of the disease.
The Australian labradoodle breed is primarily composed of poodle genetics, with smaller contributions from Labrador retrievers and spaniels. This study's findings suggest that selective breeding for a poodle-like coat has led to the development of hypoallergenic traits in the breed.
The GTEx project reveals population-specific and sex-specific differences in gene expression that can inform how gene variants impact aging and disease. The findings highlight the importance of accounting for sex differences and individual variation in future studies.
Researchers discovered dodder plants synchronize flowering with host plants by eavesdropping on their FT signaling protein. This unique behavior allows dodders to thrive by parasitizing diverse hosts without fixed flowering times.
Researchers at Skolkovo Institute of Science and Technology have identified new genetic markers for controlling glucosinolate content in rapeseed. This discovery can help crop breeders create oil-rich rapeseed varieties, improving oil quality.
A study by Dr. Jianye Ge and colleagues suggests that millions of DNA testing cases may be incorrectly interpreted due to limited genetic information. The new technology has been shown to substantially reduce the chance of mistakes in kinship relationship testing, which could have serious consequences for individuals and families.
Researchers have identified an array of new genes that cause stillbirth, significantly increasing the understanding of the condition's genetic foundations. The findings suggest that genetic analysis could be used to counsel parents who have previously experienced stillbirth and unlock new human biology.
A comprehensive assessment of genomic sequencing as a standalone newborn screening tool found it comes up short, missing about 160 cases and incorrectly identifying 8,000. However, sequencing can still be useful in suspicious cases not clearly identified by MS/MS.
A comprehensive genomic study of cervical cancers in sub-Saharan Africa has identified unique features associated with HIV-positive and HIV-negative patients. The study found distinct gene expression patterns for HPV types and epigenetic changes linked to aggressive tumors, providing potential treatment options.
A new model of screening combines better risk assessment, noninvasive testing options, and targeted referrals for colonoscopy to save more lives. The American Gastroenterological Association proposes a universal approach to screening that reaches more people and offers alternatives to colonoscopy.
A team of researchers found that genes related to blood pressure regulation appear excessively 'turned on' in lung fluid cells of COVID-19 patients, leading to excessive bradykinin production. This overproduction causes leaky blood vessels and increased hyaluronic acid levels, resulting in inflammation and severe symptoms.
Researchers developed a computational tool called PolyA-miner to analyze alternative polyadenylation (APA) sites in RNA strands. The tool precisely identifies novel APA sites that were not detected by traditional analytical approaches, revealing new insights into gene regulation.
A new assay detects intact HIV latent proviruses at higher frequencies than previous methods, revealing a significant amount of intact virus in infected individuals; this finding is crucial for developing an HIV cure. The study provides a benchmark for assessing persistent proviral DNA and its composition.
Researchers analyzed nearly 300 human SARS-CoV-2 antibodies and found IGHV3-53 is the most frequently used gene for targeting the virus spike protein. This gene leads to highly potent antibodies with lower mutation rates, making them promising for vaccine design.
A new precision gene editor for mitochondrial DNA has been developed, allowing scientists to make targeted changes without the need for CRISPR technology. This breakthrough could enable researchers to study rare diseases and basic mitochondrial biology in animals.
A study by Baylor College of Medicine researchers integrates whole-exome sequencing with untargeted metabolomics to identify genetic causes of undiagnosed conditions. The integrated analysis informed 44% of cases, reclassifying variants as likely benign or disease-causing and confirming clinical diagnoses in 21 cases.
A study funded by NIH analyzed nearly 900 women with irregular menstrual periods and identified two PCOS subtypes, each associated with distinct groups of gene variants. The reproductive subtype had higher levels of luteinizing hormone and lower BMI, while the metabolic group had a higher BMI and insulin levels.
A study reveals that long-tailed tits employ learned vocal cues to distinguish between close kin and non-kin, thereby avoiding incest. This unique strategy helps the birds maintain genetic diversity and is crucial for their reproductive success.
A new study in The American Journal of Pathology reports that gene expression analysis of lung explant tissue can accurately differentiate pulmonary arterial hypertension (PAH) from pulmonary veno-occlusive disease (PVOD). This molecular approach promises to facilitate clinical diagnostics and develop novel target-specific intervention...
Researchers are collecting DNA data from popular home genetic-testing kits to identify key genes involved in the body's response to Covid-19. The study, called Coronagenes, aims to understand why some people become ill while others remain symptom-free.
A new gene has been discovered that reduces pollen number in plants, a trait previously thought to be detrimental. The RDP1 gene promotes protein production, suggesting a potential advantage in self-fertilizing species.
Researchers have developed a new method called redHUMAN to simplify genome-scale metabolic models for analyzing human metabolism. This approach reduces the complexity of human genome-scale models by focusing on specific parts of metabolism while minimizing information loss.
Scientists used ancient DNA to link fragments of Dead Sea Scrolls, revealing new insights into their meaning and historical context. The analysis found that scrolls made from the same animal skin were more likely to belong together.
Scientists at UCL have discovered sets of regulatory genes responsible for maintaining healthy hearing in fruit flies. They found that manipulating these genes could prevent age-related hearing loss in humans, and have already started a follow-up drug discovery project to fast-track novel treatments.
A machine learning-based analysis of San Francisco Police Department DNA samples found that selective sampling increases DNA match yields by 45.4% while minimizing costs. Processing all samples in a kit doubles positive matches but is only slightly less efficient.
Researchers created an experimental diagnostic test for COVID-19 that visually detects the virus in 10 minutes, without advanced laboratory techniques. The test uses plasmonic gold nanoparticles to detect a color change when the virus is present.
Researchers analyzed 73 ancient genomes and found that the Canaanites descended from a mixture of local Neolithic populations and Iranian/Caucasus-related ancestry. This study sheds light on the cultural and genetic similarity among city-states, and how migration from the northeast may have influenced the region's culture.
A recent study analyzed datasets on rice plants across Asia to predict traits based on genetics and environment. The researchers found patterns in temperature profiles and geographic distribution of genetic haplotypes, which suggest preferential adaptation to different temperature zones.
A groundbreaking study published in iScience has created a detailed 3D map of the intracardiac nervous system (ICN), the 'little brain' of the heart. The researchers used novel imaging techniques to reveal previously unknown complexity and diversity of molecular identities among neurons.
A new testing system developed by researchers at the University of Chicago can quantify bacteria, antibiotic-resistant genes, and immune molecule levels in sepsis patients, predicting patient outcomes with high accuracy. This innovative approach enables personalized treatment strategies and may improve patient survival rates.
A genome-wide analysis has identified 19 new genetic risk factors for problematic alcohol use and confirmed 10 previously known factors. The study also found shared genetic associations with psychiatric disorders such as depression and anxiety.
A new study suggests that a comprehensive multi-drug regimen for heart failure could significantly extend patients' lives, with potential benefits of up to six years and eight years free from cardiovascular events. The regimen, which combines newer therapies, may improve life expectancy across all age groups.
Researchers have discovered a rare disease called TRAF7 syndrome, characterized by distinctive facial features, cardiac defects, and intellectual disability. The study analyzed 45 new patients, expanding on previous research with seven individuals, to define the clinical picture of this condition.
A recent study has identified 32 new sites on the human genome where variations in DNA appear to alter the risks of getting specific subtypes of breast cancer. The analysis, covering over 266,000 women, may eventually improve the ability to predict breast cancer risks at a subtype level.
A new study found that an individualized mosaic of microbial strains is transmitted from the maternal gut to the infant gut during birth, influencing the infant's metabolic disease susceptibility. Researchers used a 'fingerprint' method to track mothers' microbial strains inherited by infants.
Researchers discovered that helper proteins Swi5-Sfr1 and Rad51-related helpers collaborate to activate Rad51 in DNA repair. Mutations in Swi5-Sfr1 compromised activation, but yeast cells lacking Rad51-related helpers still repaired DNA, suggesting a compensatory role.
A new study analyzes thousands of phylogenetic trees to shed light on the nature of the earliest living organisms. It suggests that early mutation rates were much higher than at present, leading to a complex 'family tree' of life. The research provides insight into how quickly early organisms may have evolved billions of years ago.
The Coalition for Epidemic Preparedness Innovations (CEPI) grants $6.9 million funding to INOVIO and IVI to conduct clinical testing in Korea for INOVIO's COVID-19 vaccine candidate based on their well-established DNA platform technology. The trial will be conducted in parallel to INOVIO's Phase I INO-4800 study underway in the US.
Researchers have identified genes implicated in neurodegeneration throughout the stages of Alzheimer's disease using gene-network analysis. The study found that protein domain networks collapse during the progression of AD, leading to neuronal dysfunction and neurodegeneration.
Researchers identified genes ABTB1 and GRB10 as influential in nutrient-sensing pathways, associated with performance on memory tasks. Lifestyle changes, such as diet and exercise, can delay memory decline, but genetic variations affect their effectiveness.
A new study identified over 1,000 genetic variations in 450 genes linked to moderate to severe myopia. The research suggests that genetics can play a significant role in myopia, with specific genes involved in circadian rhythm and eye pigmentation.
Scientists discover ninth species of dragon lizard in genus Smaug, previously mistaken for similar-looking species S. barbertonensis. The new species, Smaug swazicus, is the largest southern African lizard species described since 82 years ago, with up to 13 inches from snout to tail tip.
Researchers at CNIC have identified an inflammatory regulatory circuit controlled by endothelial cells in the eye, which may regulate retinal vascular diseases and inflammatory disorders. The discovery provides new perspectives on treating conditions like age-related macular degeneration (AMD).
Scientists create two innovative AST methods that can assess a pathogen's sensitivity to beta-lactams in just 30 minutes, targeting top CDC priorities. New phenotypic tests quantify small changes in nucleic acids after antibiotic exposure.
Scientists have identified several genes that may be involved in the development of diabetic kidney disease. By analysing Finnish samples with diabetes, researchers found connections between specific proteins and the condition. The study's findings suggest new potential targets for treating diabetic kidney disease.
Researchers at Princeton University identified key factors essential for chronic hepatitis B infection. The study found that five human proteins are necessary for the repair process of HBV DNA, and targeting these factors could potentially prevent the infection.
A new genetic study reveals a complex US population structure, including fine-scale insights into recent history. The findings show diverse patterns among Hispanic/Latino and Asian American populations, shedding light on their ancestral origins and migration patterns.