Articles tagged with Dna Detection
An international team reconstructed a 1,000-year timeline documenting human impact on the ecosystem surrounding Crawford Lake. The analysis of sedimentary ancient DNA samples revealed changes in plant, animal, and microbial communities over the centuries.
Researchers have developed a new method that can detect cancer with low levels of DNA in the blood, providing more detailed information about tumour composition. This could lead to better care for cancer patients, enabling closer monitoring of treatment progress and more informed decision-making.
A pre-Columbian Bolivian mummy has been found to harbor the ancient Streptococcus pyogenes bacterium, a pathogen responsible for scarlet fever. The genome of this centuries-old bacterium was reconstructed from its DNA, revealing genetic variants that may no longer exist today.
Researchers developed a new eDNA sampling membrane that captures DNA fragments with high efficiency, detecting multiple tropical coral reef fish species. The membrane, coated with molybdenum disulfide nanosheets, enables preferential interactions with DNA bases, improving the capture of trace eDNA from large volumes of seawater.
A recent study published by the Ecological Society of America highlights the impact of rainstorms on environmental DNA in streams. Researchers found that rainfall can wash away genetic material from land-based species and deposit it into nearby waterways, providing a fuller picture of who is present. In another study, scientists discov...
Researchers have developed a simple urine test that can effectively diagnose and stage bladder cancer using cell-free DNA fragmentation analysis. The study found that specific patterns of cfDNA fragmentation can identify muscle-invasive bladder cancer with excellent specificity and predictive value.
Research from ESA's journals reveals that tiger populations are limited by prey scarcity, not protection. Invasive grasses also boost tick survival in Florida's longleaf pine forests.
Research by Kobe University entomologist SAGA Tatsuya found that two hornet species divide their prey by specializing on different targets. The Japanese yellow hornet eats soft-bodied prey like crickets and moths, while the yellow-vented hornet consumes low-value prey such as beetles and wasps.
A novel 3D chromosome mapping method has been developed to detect hidden structural variants in DNA, revealing new discoveries for genetic disorders. The study successfully identified known large chromosomal variants with 100% concordance and uncovered 12 novel structural variants missed by standard clinical tests.
Researchers from BIOMICs group found significant genetic marker associations with facial areas, including eyes, nose, and forehead. The study aimed to predict external human features using DNA analysis for forensic purposes.
A new AI tool developed by University of Missouri researchers can predict the 3D shape of chromosomes inside individual cells, providing a new view of how genes work. The tool helps identify unique differences in chromosome folding between cells, which controls gene activity and can lead to diseases like cancer.
A new method for DNA detection uses heterogeneous probe particles and laser light to accelerate genetic analysis. This PCR-free technique offers greater sensitivity and speed than traditional methods, making it more accessible for medical, environmental, and personal health applications.
A novel fluorescent biosensor captures spatio-temporal dynamics of STING activation in response to aberrant DNA, enabling visualization of single cell and population responses. This study reveals new insights into the immune response to chromosomally unstable tumours and potential avenues for treatment.
Researchers at U of T have developed a new platform called smol-seq that uses DNA sequencing to detect metabolites. This method enables the analysis of hundreds of metabolites simultaneously, making it faster and more precise than current methods.
Researchers identified a vulnerability in the bacterial machinery driving antibiotic resistance adaptation, which could lead to new counter-strategies. The study found that a genetic toolbox called integron system plays a crucial role in adapting resistance genes.
Researchers aim to develop resilient soybean plants resistant to southern root-knot nematodes, causing $160 billion in damages annually. The project will screen hundreds of genetically diverse soybean lines worldwide to identify potential new sources of resistance.
Researchers at Kumamoto University have developed a cutting-edge diagnostic tool, Intelli-OVI, to rapidly identify emerging SARS-CoV-2 variants. This system combines advanced DNA detection technology with computational algorithms to offer a quicker and more cost-effective method of monitoring viral mutations.
Researchers have developed a novel CMUT-based biosensor that can detect single-stranded DNA oligonucleotides with high specificity without needing external labels. The biosensor features improved selectivity and label-free detection, making it suitable for point-of-care diagnostics.
Researchers found cyclin D1 expression in patients with penile cancer (PC) is associated with clinical and histopathological features. Patients with cyclin D1 expression had lower disease-free survival compared to the cyclin D1-negative group.
Researchers have developed a urine-based test that detects pieces of DNA fragments released by head and neck tumors, providing a non-invasive alternative to traditional blood-based biomarker tests. The test has been shown to detect cancer recurrences far earlier than would typically happen based on clinical imaging.
Researchers have found that a specific pathway, cGAS-STING, is unleashed to prevent cancer formation by detecting DNA damage within cells. The discovery reveals the 'key' to unleashing this pathway, which can potentially reactivate it to treat and prevent breast cancer development.
A study published in the Entomological Society of America's Journal of Insect Science found that adult periodical cicadas contain plant DNA, including woody plant and Malus (apple tree) DNA, indicating they feed on plant sap. The discovery resolves a long-standing scientific debate on whether adult cicadas feed.
Researchers developed an analytical tool to spot stray DNA and RNA contamination in genetic analyses, increasing result accuracy. The software, SAHMI, can identify microbe-associated cells and study microbiome distribution in tissues.
Researchers at the University of Massachusetts Amherst have developed a new method for DNA detection that is 100 times more sensitive than traditional methods. This breakthrough enables fast and accurate disease diagnosis, reducing wait times for lab processing from days to minutes.
A team of paleontologists has discovered the oldest record of sea turtle DNA in a fossil shell from Panama's Caribbean coast. The findings, published in Journal of Vertebrate Paleontology, date back approximately 6 million years to the upper Miocene Epoch.
The study presents a pioneering detection tool that combines molecular biology and electronics to identify various pathogenic agents. The technology has demonstrated remarkable sensitivity detecting as few as 10 target molecules and rapid results under one hour.
Researchers have engineered bacteria that can detect tumor DNA in a live organism, using CRISPR technology. The bacteria, Acinetobacter baylyi, were designed to respond to specific DNA sequences associated with cancer, allowing for early detection and potentially preventing disease progression.
Rice University engineers developed a low-cost, point-of-care DNA test for HPV infections that can be used to screen for cervical cancer. The test, which requires just two pieces of equipment and delivers results in 45 minutes, has the potential to make cervical cancer screening more accessible in low- and middle-income countries.
A new University of Florida study reveals high-quality human DNA in various environments, including beaches, rivers, and air samples. The findings raise significant ethical concerns about consent and privacy, highlighting the need for policymakers to develop regulations.
Researchers at Pusan National University have developed a novel FRET-based biosensor to detect double-strand breaks in DNA, providing real-time information on γH2AX. The sensor's sensitivity is higher than conventional immunostaining techniques, making it useful for identifying DNA damage factors and elucidating repair mechanisms.
New research on malaria-infected bonobos shows that the infection harms them, too, with symptoms including fever and increased mortality risk. The study also finds that bonobos have a protective variant of an immune gene similar to one found in humans, suggesting a selective advantage for those individuals.
A new genetic test can identify dogs at risk of a potentially deadly disorder resulting in excessive bleeding and bruising after surgical procedures. The DEPOHGEN test will allow for preventative treatment by administering antifibrinolytic drugs to dogs with the mutation before surgery.
Researchers have documented cases of Japanese macaques hunting and eating fish in the Kamikochi region of Japan, suggesting an evolutionary adaptation to harsh winter conditions. The behavior appears to be an extension of existing feeding habits on vegetation and aquatic plants, with potential implications for future generations.
G-Quadruplex DNA structures play a crucial role in regulating genes and cell processes, but their visualization is challenging due to the dynamic nature of double standard DNA. Fluorescence-active small molecule probes have emerged as a real-time visualization method, enabling researchers to detect G-quadruplexes with high selectivity.
A new blood test has shown promising results for detecting multiple types of cancer from tumor DNA in the blood, enabling early detection and potentially changing cancer screening practices. The test's accuracy and effectiveness have been demonstrated in a recent study, with high sensitivity and specificity rates.
Researchers propose using wastewater epidemiology to monitor monkeypox spread, detecting viral DNA in sewage and potentially identifying low infection rates. The method could be optimized for community-level monitoring, providing a valuable framework for developing robust programs.
A new study found monkeypox virus DNA in the saliva, semen, and other clinical samples of 12 infected patients. Viral DNA was detected in these fluids even after symptoms had resolved, suggesting they may be infectious.
A novel liquid biopsy test can accurately detect cancer DNA in the blood of patients with metastatic breast cancer within five hours, potentially helping oncologists determine if treatments are working. The test's diagnostic accuracy is 85%, correctly detecting cancer 83% of the time and ruling out cancer 92% of the time.
SeqScreen, an open-source software toolkit, accurately characterizes short DNA sequences to detect pathogenic sequences. The program uses a curated database of thousands of gene sequences representing 32 types of virulence functions.
A new study found that circulating tumor DNA can identify stage II colon cancer patients who benefit from chemotherapy, sparing others the need for treatment. The study showed reduced use of chemotherapy without compromising survival rates.
Researchers at MBARI use eDNA and autonomous underwater robots to survey marine biodiversity, providing clues about changes in sensitive areas and the presence of rare species. The technology enables persistent monitoring of ocean ecosystems, supporting food webs and regulating climate.
A large-scale genetic study has identified 287 genomic regions associated with schizophrenia and 120 specific genes linked to the disorder. These findings provide new insights into the biological processes underlying schizophrenia, offering potential avenues for novel therapies.
A new study from the University of Eastern Finland shows that liquid biopsy can detect cancer mutations months before recurrent breast cancer is detected. This method uses biomarkers released by cancer cells in serum samples to assess changes in intratumoural heterogeneity and provide a more accurate clinical picture.
A blood test detecting circulating tumor DNA can accurately predict recurrence of HPV-driven oropharyngeal cancer following treatment. The biomarker test may detect recurrent disease earlier than imaging or other standard methods, allowing physicians to personalize treatment more quickly for patients whose cancer returns.
Researchers have clarified the mechanism behind activating genes in drosophila fly sex cells, which may hold clues to understanding diseases. The study's findings suggest that DNA packaging plays a crucial role in regulating gene expression, with abnormal packaging potentially leading to misregulation and disease.
Researchers have developed a rapid and affordable test to identify specific genetic mutations in cancer cells using SuperSelective PCR primers. This assay can detect rare mutations, enabling targeted therapy and monitoring minimal residual disease. The study demonstrates the potential of this approach for personalized cancer treatment.
Researchers at Peking University developed a microsensor that leverages whispering gallery modes to detect single DNA molecules with improved sensitivity. The interface mode outperforms traditional evanescent field-based sensors, offering ultra-small sample consumption and automatic analysis capabilities.
Scientists from Japan and USA develop a microfluidic device for purification of tuberculosis genomic DNA fragments, enabling accurate diagnosis of diseases. The device uses transient ITP and electrokinetic trapping to detect and purify small cfDNA fragments.
Scientists developed a simple method to detect chicken and pork meat in sausages and processed products within 15 minutes. The new approach uses recombincase polymerase amplification and test-strip detection, providing fast and affordable results.
Researchers have successfully identified animal species in zoo air by collecting airborne environmental DNA, offering a valuable tool for tracking biodiversity without intensive fieldwork. By analyzing millions of DNA sequences and comparing them to reference databases, scientists can detect even elusive or inaccessible species.
Two independent research groups use airborne environmental DNA (eDNA) to detect a wide range of animal species, including those in zoos and beyond. The technique shows promise for monitoring biodiversity and conservation efforts, especially for vulnerable or endangered species.
Researchers at Lund University have successfully detected insect DNA in the air, offering a novel approach to monitoring terrestrial biodiversity. This method, known as airborne DNA metabarcoding, allows for the detection of multiple species from single samples and could accelerate biodiversity surveys.
Researchers used next-generation DNA sequencing to detect residual disease in patients treated with CAR-T therapy for acute lymphoblastic leukemia. The study found that DNA sequencing was more sensitive and accurate than flow cytometry in predicting relapse, enabling earlier intervention.
Researchers at DTU Health Tech have invented a one-pot assay, NISDA, for rapid detection of SARS-CoV-2 RNA without the need for enzyme-based methods. The assay detects low concentrations of RNA in 30 minutes and has shown high accuracy and sensitivity.
Scientists at UEA have identified a way to determine the age of lobsters using DNA. The method is based on quantifying DNA changes that accumulate with age within a lobster. This breakthrough could help manage lobster fisheries more sustainably by providing accurate estimates of lobster ages.
Researchers found fecal contamination in Montana's Absaroka-Beartooth Wilderness Area, primarily attributed to wildlife and pack animals. Human-associated bacteria were detected at lower levels, but not significantly related to landscape or elevation.
Researchers found that salivary HR-HPV DNA can detect HPV-driven head and neck cancers (HNC) in most patients at the time of diagnosis. The study showed a clear survival advantage for salivary HR-HPV-positive patients, with high-risk strains detected in most cases.
Researchers have developed a sophisticated new tool to detect and identify rare and unknown viruses and potentially deadly bacterial pathogens. The algorithm helps isolate DNA sequences shared among related organisms, enabling faster detection and identification of pathogens in clinical or wildlife settings.
GIST scientists utilized latest advances in single molecule detection to observe the enzymatic activity of gene repair. The study revealed that ExoIII has an affinity for damaged DNA sites, creating a gap that Pol I fills. Understanding this mechanism may lead to technologies for targeted gene repair and drug development.
Researchers successfully detected local mammals and birds by collecting 18 litres of water from a two-kilometre stretch along the river Mulde. The team identified 50% of fish species, 22% of mammal species, and 7.4% of breeding bird species in the region.