Articles tagged with Human Genetics
Researchers used DNA microarrays to analyze 40% of the fruit fly genome and found that genetic changes are the result of many small contributors. The study's findings suggest that human genetic biases may also be caused by small changes in multiple genes.
Researchers found two genes associated with human cancer play a central role in orienting cells towards chemical cues. They discovered that PI3K acts as an internal compass and steering mechanism, allowing cells to move efficiently towards chemical attractants.
Researchers have found that people with depression have a persistent biological abnormality in their serotonin systems, even when not depressed. The study, published in Neuropsychopharmacology, suggests depression reflects a genetic trait and may require longer medication use.
Scientists at UC Davis have found a gene in nematode worms Caenorhabditis elegans that matches a gene altered in one form of dystonia. The discovery may lead to new insights into the disease and potential treatments. Researchers plan to study how OOC-5 interacts with other proteins to better understand its role in human nerve cells.
Scientists discovered that some human LINE-1 elements, known as junk DNA, can jump into chromosomes with broken strands and repair the damage. This finding raises questions about the potential benefits of these ancient genetic elements to human cells.
Researchers suspect that a six-armed brittlestar, common in shallow coral reefs, may have invaded the western Atlantic via ships over the past two centuries. Genetic markers indicate massive long-distance dispersal and recent mixing of populations from the Pacific and Indian Ocean, raising concerns about ecological consequences.
Researchers have discovered a significant link between low birth weight and mitochondrial DNA passed from mothers to offspring. This finding suggests that genetics play a substantial role in determining birth weight, and may also contribute to adult illnesses such as diabetes and heart disease.
A recent study published in Science reveals that chimpanzees and humans have strikingly different patterns of gene expression in the brain, with humans exhibiting accelerated evolutionary change. This difference may hold clues to understanding medical traits such as AIDS, malaria, and Alzheimer's disease.
The study reveals significant differences in human and chimpanzee brain gene and protein expression, with humans accumulating expression differences at least five times faster than chimpanzees. This discovery may provide insights into the genetics underlying diseases that affect humans but not chimps.
A study found that nearly 800 monkeys in Cameroon were infected with simian immunodeficiency viruses, highlighting the risk of human exposure through hunting and handling primates. The diversity among the viruses suggests a high degree of human exposure to SIVs.
Scientists have identified a specific genetic locus associated with fundamental human brain oscillations, contributing to the understanding of brain neuroelectric activity and providing new insights into alcoholism risk. The study found an association between beta EEG frequencies and a cluster of genes located on chromosome 4.
A new study shows that a vaccine based on a chimpanzee adenovirus possesses the immunological strengths of a human adenovirus vaccine without its drawbacks. The vaccine, developed by researchers at The Wistar Institute, has been shown to be effective in mice against rabies and other viruses.
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.
Christy Comeaux, a Johns Hopkins University undergraduate, is studying the genetics of fruit flies to understand human organ development. She has made key discoveries about how genes work in humans and how cells position themselves within organs.
Researchers found a shift in diet and personal ornamentation, such as beads, around 40-50 thousand years ago, which may indicate increased human population density. This change occurred simultaneously in Africa, Asia, and Europe, suggesting that modern humans did not expand from a single geographic location.
Researchers at the University of Pennsylvania School of Medicine have found a remote control mechanism that sets human growth hormone into action, operating from 15 kilobases away. This discovery could lead to an eventual gene therapy for type of dwarfism resulting from pituitary gland's inability to manufacture hGH.
Johns Hopkins researchers have identified a protein called stat3-beta that regulates genes involved in systemic inflammation. In mice engineered to lack this protein, researchers found fatal kidney failure due to uncontrolled inflammation, highlighting the potential of stat3-beta as a therapeutic target for human inflammatory diseases.
Researchers have discovered that specific cellular mechanisms confer resistance to cancer in rats, allowing them to develop pre-cancerous lesions but then return to normal. The study aims to identify genes involved in this resistance, which could lead to breakthroughs in human cancer prevention and therapy.
Researchers identified a genetic anomaly in mice resistant to the ecotropic murine leukemia virus, a major cancer-causing virus. By analyzing proteins, they found a defective protein that blocks viral entry, potentially leading to new gene therapies for humans.
The International Collaborative Genetics Research Training Program aims to reduce health disparities through genetic sciences. The program provides Ph.D. and Master's level education, addressing ethics, social, and legal implications of genetics research in low- & middle-income countries.
Scientists have successfully corrected sickle cell disease in mice using gene therapy by introducing an anti-sickling human beta-hemoglobin gene. The study, supported by the NHLBI, shows promising results with high expression of the gene in up to 99% of circulating red blood cells.
Researchers identified a mutated WFS1 gene responsible for low-frequency sensorineural hearing loss, which can lead to severe hearing aids requirements. The discovery may be common in the general population and could connect with other conditions like Meniere's Disease.
A recent study has identified over 100 yeast genes that provide protection against radiation, revealing new insights into human genetic resistance to environmental stressors. The findings also suggest potential targets for the development of more effective anti-cancer drugs.
The symposium explores the effects of genetics research on social organization, human nature, and what it means to be human. Experts discuss race, ethnicity, genes, and human potential, with a focus on values, ethics, and social impact.
Researchers identify Mus81, a resolvase enzyme in fission yeast, as a crucial component of genetic recombination. The discovery has potential implications for cancer therapy, as the enzyme plays a role in cell replication and DNA repair.
Researchers at University of Pennsylvania successfully inserted a foreign gene into male mouse spermatogonial stem cells, achieving high efficiency and expression. The breakthrough enables the creation of transgenic individuals in various species, paving the way for studying human diseases.
C. elegans has a large number of genes due to its genetic makeup and the need for robust development and morphology. The worm's ability to fend off bacteria and other microorganisms in its soil environment is also thought to contribute to its high gene count.
A gene similar to the human cancer-suppressing gene has been identified in a nematode worm, which protects against cancer-causing agents and extends life span under stress conditions. The discovery may lead to novel anti-cancer drugs and a better understanding of human longevity.
Researchers identified a region on Chromosome 4 containing genes that contribute to exceptional longevity. This discovery could lead to the development of drugs that mimic centenarians' genetic characteristics, promoting healthy aging.
Research examines 117 twins and finds that genetics account for 48-59% of periodontal disease differences. The study suggests identifying people at high risk before symptoms appear may lead to new treatment avenues.
The current medical research protocols are out of step with evidence-based medicine and new technology developments, suggests an analysis in the Journal of Medical Ethics. Patients taking part in research deserve the same safety and regulation standards as public transport passengers, yet often receive inadequate care.
A Chimpanzee Genome Project is proposed due to the remarkable differences in diseases affecting humans and chimps. The project aims to identify genetic factors contributing to these disparities, which could lead to better treatments for both humans and captive apes.
Scientists have successfully cloned a piglet using microinjection, marking a significant step towards xenotransplantation and genetically modified organs. The breakthrough could lead to human-friendly pig organs, reducing rejection rates and increasing the success of organ transplants.
Researchers successfully engineered a genetic toggle switch to control the activity of genes between stable on and off states. The toggle represents core technology for genetic control devices with potential applications in diabetes, biological warfare agent detection, and cell-based computing.
Researchers used DNA fingerprinting to identify 16 wine-grape varieties, including Chardonnay, as the offspring of Pinot and Gouais blanc. This discovery provides valuable information for grape breeders, allowing them to preserve old varieties and develop new ones.
David Botstein, Ronald Davis, and Eric Lander were awarded the Chiron Corporation Biotechnology Research Award for their pioneering work on genetic linkage analysis using molecular markers. Their research laid the foundation for the Human Genome Project and enabled the construction of human genetic maps.
A University of Illinois geneticist criticizes the misuse of genetics in society, citing the controversial book 'The Bell Curve' as an example. Jerry Hirsch argues that the field has been misunderstood and mishandled, leading to flawed conclusions about intelligence and racism.
deCODE Genetics has identified the location of a gene, FET1, responsible for familial essential tremor on human chromosome 3. This discovery brings new hope for understanding and treatment of the disease, which affects an estimated 5-10 percent of the elderly population.