Articles tagged with Genetic Analysis
Researchers have linked genetic factors to severe kidney disease in blacks, with evidence pointing to genes on chromosome 18 and another unidentified region. The study involved a large African-American cohort and could pave the way for targeted therapies.
A genome-wide analysis of 1,875 people found a significant link between a region on chromosome 1 and blood pressure regulation. The study identified 24 genes that may play a role in hypertension, with three genes showing specific genetic changes associated with the condition.
A new Standard Reference Material issued by NIST uses both SNPs and STRs to improve reliability of laboratory analyses of male DNA. The standard consists of six vials of carefully analyzed DNA, providing certified sequences for 22 STR locations and 42 SNPs.
Researchers developed a molecular test that detects residual cancer cells with high accuracy, outperforming standard cytogenetic analysis. The test predicts disease progression and can be used to stratify patients according to their level of remission, potentially shortening clinical trial duration.
A new gene mutation has been discovered for a rare form of inherited paralysis called hereditary spastic paraplegia. This breakthrough could lead to improved diagnosis and potential treatments for the condition, which affects around 20,000 Americans.
A recent study identified 35 genes that may be linked to prognosis in pediatric acute myeloid leukemia (AML), providing new insights into the disease. These unexpected genes were found independently of current classification methods and separated patients into high- and low-risk groups.
Researchers measured DNA's torsional stiffness, finding it 40% more resistant than previously reported. This breakthrough enables understanding of energy costs and mechanical behavior in biological processes.
A team of researchers analyzed ancient DNA from Joseph Merrick, aka the Elephant Man, to uncover the cause of his severe deformities. The study revealed that Merrick likely suffered from Proteus syndrome, while some experts suggest he may have had both Proteus syndrome and neurofibromatosis.
A new bead-array test can identify the 25 most common cystic fibrosis mutations in just 15 seconds, enabling potential parents to make informed decisions about conception and treatment options. The test requires only genomic DNA from a patient and uses a single reaction to screen for all 31 CF mutations.
Researchers have developed a miniature biolab on a silicon chip that captures DNA from samples, purifies it, and performs polymerase chain reaction to rapidly replicate the selected segment of DNA. This breakthrough simplifies the process and enables real-time automated detection of biological agents.
A recent study has identified GATA4 gene mutations as a primary cause of human cardiac septal defects, which are characterized by the incomplete formation of the heart's four chambers. The discovery is significant, as it may one day enable doctors to prevent congenital heart defects by fixing the problem before birth.
The research team successfully cloned a mule, marking the first time a hybrid animal has been cloned. The cloning process uses fetal cell culture established in 1998 at the University of Idaho and demonstrates potential for advancing understanding of human cancer.
Researchers at North Carolina State University found that loblolly pines and Arabidopsis thaliana share 90% of their genes, despite being vastly different in appearance. This suggests that woody and herbaceous plants may have evolved using the same genetic mechanisms.
Researchers found that every slice of toothed whale red meat exceeded Japan's mercury limit, with some samples containing almost 200 times the maximum value. Mercury levels were higher in whales caught off the southern coast of Japan.
A new study has established genetic associations in hepatitis C, finding correlations between the CD4 and IL-1B genes and disease activity. The research suggests a possible role of intrahepatic CD4 T cells in hepatic injury and immune response to HCV infection.
Researchers found a link between African-origin genetic markers and decreased insulin sensitivity in children, suggesting a genetic basis for the disparity. The study also highlights the importance of genetic factors in understanding and preventing type 2 diabetes in black communities.
A new method, KL clustering, has been identified as more effective than hierarchical clustering in separating gene expression data into dense clusters. The approach uses a novel measure of similarity to create well-separated clusters, offering insights into gene-gene interactions and biological processes.
Hancock's pioneering work on separating proteins using HPLC has significantly contributed to understanding complex disorders like cancer and Alzheimer's disease. His research utilizes mass spectrometry to analyze protein fragments and identify patterns in blood, paving the way for personalized medicine.
Researchers discovered a correlation between a specific genetic variation in the COMT gene and higher levels of anxiety in women. Women with the COMT Met158/Met158 genotype tended to exhibit increased anxiety symptoms, as well as altered brain wave patterns associated with anxiety disorders.
Researchers at Cold Spring Harbor Laboratory identified 92 unique fruit fly memory genes that could be important for understanding human learning and memory. The study found that many of these genes have counterparts in humans and may be potential targets for developing therapies to treat Alzheimer's disease.
Researchers at Johns Hopkins Medicine have created SNOMAD and DRAGON to help decipher the complex patterns of gene activity in brain tissue. By applying these tools to microarray data from conditions like Down syndrome, they aim to identify genes involved in causing problems.
Gavin Sherlock, PhD, director of the Stanford Microarray Database, discusses the history of gene microarray databases and their growing importance in making research data publicly available. A common standard, Minimal Information About a Microarray Experiment, has been established to facilitate easy access to the data.
A host gene variant on chromosome 6 has been identified as making people more vulnerable to leprosy. Researchers used genome scanning to analyze DNA samples from nearly 100 families and confirmed the findings in an additional 200 families.
Experts agree that inheritable genetic modification (IGM) can improve human health, social life, and access to medical technologies. However, they also emphasize the need for fair decision-making processes, informed participation of stakeholders, and consideration of moral and religious perspectives.
Researchers at UT Southwestern and Children's will develop protocols and procedures for a thermocycler called GeneXpert, which rapidly processes and analyzes DNA samples. The new testing methods should allow children to leave the hospital sooner or avoid hospitalization altogether, with results available within hours.
Researchers have found genes in Anopheles mosquitoes that enable them to resist infection by the deadly malaria parasite. The discovery could lead to new strategies to prevent malaria transmission by spreading the parasite-blocking genes among mosquito populations.
A study found that visual inspection with acetic acid (VIA) and HPV DNA testing are less expensive alternatives to traditional Pap smear screening for cervical cancer in developing countries. VIA, performed every 5 years in women ages 35-55, was the least expensive approach and saved the most lives.
Researchers recreated a 240-million-year-old protein to study the vision of dinosaur ancestors, finding evidence that they may have had dim-light vision. The discovery offers insights into how biologically important molecules evolved over time and paves the way for further studies on ancient species.
The American Society for Colposcopy and Cervical Pathology has released comprehensive national consensus guidelines to evaluate women with abnormal Pap tests. The guidelines recommend utilizing new technologies, including liquid-based cytology and HPV testing, to standardize care.
Researchers at Rush University Medical Center are conducting a Phase I clinical trial to test the safety and efficacy of an HIV vaccine in healthy individuals. The vaccine has shown promise in eliciting specific antiviral cellular immune responses and is generally well-tolerated.
An international team conducted genetic tests of bacteria thriving in Antarctica's Dry Valleys, a frigid desert with no recent rainfall. The research aimed to understand how these microbes survive and shed light on the possibility of life on other planets.
Researchers have found a genetic susceptibility locus on chromosome 1 that may contribute to the development of anorexia nervosa. The study used a genome-wide linkage analysis and identified a possible AN-susceptibility gene on chromosome 1p, adding to growing evidence supporting the role of genetics in eating disorders.
The study defines web communities as collections of pages with more links within than outside, and uses a maximum flow framework to efficiently identify them. Communities are found to be highly relevant and topically related, with applications in search engines, directories, and content filtering.
Templeton's analysis reveals human population expansions occurred between 420,000 and 840,000 years ago and 80,000 to 150,000 years ago. Genetic interchange between populations has occurred throughout history, contradicting the idea of replacement events.
Pamela Douglas, a Johns Hopkins University senior, is analyzing DNA from children suffering from Rhizomelic Chondrodysplasia Punctata, a devastating disease that causes stunted limbs and mental retardation. Her work may yield clues to the development of a treatment for this rare but fatal disorder.
The new sensor can detect specific biological agents even at trace amounts in air or water, enabling quick diagnosis and treatment in remote medicine scenarios. The device's optical-based system improves response time and enables personalized medicine through genotyping.
Researchers create protein nanoarrays with features over 1,000 times smaller than conventional arrays, enabling more accurate and efficient detection of biomolecules. The technology, developed by Northwestern University, holds promise for applications in disease screening and biorecognition.
Researchers use microarray technology to identify genes involved in DNA repair and other cellular processes in yeast. The method allows for rapid identification of gene functions, accelerating efforts to understand the role of genes in various biological processes.
A large-scale study has identified genetic links to schizophrenia in European-American and African-American families. The research found a positive association between chromosome 15 and schizophrenia in European-Americans, but no such link in African-Americans.
Researchers from SurroMed and Penn State University have developed Nanobarcodes particles, which can identify individual particles using optical microscopy. This technology enables multiplexed bioassays in solution, revolutionizing life science research and disease diagnosis.
Researchers unveil a new technique for analyzing tiny airway biopsies, revealing a new disease suspect in asthma - the NKCC1 gene. The technique quickly measures multiple gene activities, supporting current hypotheses about asthma mechanisms while pointing to an unexpected role in excess mucus secretion.
A study published in Science identified two genes, WNK1 and WNK4, that cause pseudohypoaldosteronism type II (PHAII), a disorder leading to hypertension. The researchers found that the mutated genes are overexpressed in affected family members, leading to increased salt reabsorption and blood pressure.
A new DNA test developed by researchers at Indiana University uses quantum dots to quickly and accurately analyze large numbers of genes. The test can identify up to 40,000 different genetic codes in just 10 minutes, making it a game-changer for medical diagnosis and research.
Researchers used SAGE technique to identify 2016 genes active exclusively in dauer, a non-reproductive, long-lived form of C. elegans. Chromosome stability and structure are linked to dauer biology, with tts-1 gene playing a crucial role.
A new DNA test developed by the University of Maryland Biotechnology Institute rapidly identifies Pfiesteria piscicida, a toxic marine microbe linked to fish kills and human illness. The test helps predict outbreaks and study the toxin's effects on immune cells in the brain.
Researchers at Yale University have successfully characterized the function of yeast genes, providing new insights into how human cells work. The study's findings could lead to better understanding and treatment of diseases like cancer.
Campylobacter is a leading cause of food poisoning, but lacked a reliable test until now. Researchers have developed a quick DNA test that can identify the bacterium in eight hours, and a scanner to detect faecal contamination on meat.
The University of Michigan team developed a miniature laboratory on a chip that can analyze DNA samples quickly and sensitively. The device is expected to make DNA analysis widely available and has potential applications in medical diagnostics, forensics, and agriculture.
Virginia Tech Professor Doris Teichler Zallen explains the options, limitations, and problems of genetic testing for disorders like Alzheimer's, breast cancer, and muscular dystrophy. She highlights the need for informed consumers to weigh the benefits and risks of testing against their personal values and circumstances.
A recent study by Johns Hopkins Medicine detected genetic mutations specific to cancer in blood samples of six patients with head and neck cancer. The presence of DNA alterations in the blood was associated with large, advanced tumors and poor outcomes, including increased mortality rates.
A study by Virginia Tech researchers found that public support for the death penalty is ambivalent, with many opponents emerging when alternatives to capital punishment are presented. The survey showed that 83% of Virginians initially supported the death penalty, but this number dropped significantly when respondents were given a life ...