Markers in Biological News

Study finds DNA barcoding requires caution without closer examination

... very accurate at distinguishing or serving as markers for species boundaries in the section Petota . ... in the nuclear ITS region, and the plastid markers did not have enough variation and thus failed to ... for a DNA barcoding marker or limited set of such markers that reliably identify the majority of life forms ...

A urine test for appendicitis?

... biomarkers. They then sought to validate these markers in 67 children seen at the hospital for suspected ... The laboratory investigators testing for the markers were not told the patients' clinical status, to ... will play a major role in discovering diagnostic markers for a variety of pediatric diseases in the ....

UCLA cancer researchers develop model that may help identify cancer stem cells

... us to do is test, in patient specimens, which markers indicate the presence of lung cancer stem cells," ... directly from clinical specimens based on the markers they express, and then validate these cells ... Batra looked for both cell surface and epigenetic markers associated with cancer stem cells and found ...

Tips from the American Journal of Pathology

... Am J Pathol 2009, 174: 1996-1999 Novel markers for Kidney Disease Progression A group led by ... the University of Michigan have established novel markers of kidney disease progression. Their report can ... renal disease. However, current clinical markers are not sufficient to reliably predict chronic ...

Swine flu genes dissimilar to past pandemics

... Some genetic markers of influenza infection severity have been ... analysis identifying 34 conserved amino acid markers from past pandemic flu strains two weeks ago. ... virus and found that only about half of their 34 markers are present. Slezak said, "This lack of ...

Vitamin D levels linked to asthma severity

... also significantly more likely to have several markers of allergy, including dust-mite sensitivity. ... between circulating levels of vitamin D and markers of asthma severity and allergy," wrote Drs. ... results were robust even after controlling for markers of baseline asthma severity." "This study ...

Caffeine appears to be beneficial in males -- but not females -- with Lou Gehrig's disease

... caffeine and chlorogenic acid supplementation on markers of oxidative stress, antioxidant enzyme protein ... prior to animal sacrifice. Molecular measures: markers of oxidative stress (4-HNE; 3-NY), antioxidant ... Coffee: increased food intake by 21%, decreased markers of oxidative stress by 39-65%, ...

Caffeine appears to be beneficial in males -- but not females -- with Lou Gehrig's disease

... caffeine and chlorogenic acid supplementation on markers of oxidative stress, antioxidant enzyme protein ... prior to animal sacrifice. Molecular measures: markers of oxidative stress (4-HNE; 3-NY), antioxidant ... Coffee: increased food intake by 21%, decreased markers of oxidative stress by 39-65%, ...

A London effort to develop point-of-care nanosensors for HIV diagnosis and monitoring

... arrays, to measure HIV and other protein markers that can indicate a rise in the level of the ... stick to the HIV and other proteins, which are markers associated with disease progression. Accommodating these markers causes the highly sensitive sensors to bend like ...

Distinguishing single cells with nothing but light

... IRAM differs from most standard procedures where markers are inserted in, or attached to cells. If a ... basis of specific binding properties. While markers are often adequate for studying cells at a single ... activities, like membrane transport. And internal markers actually involve punching holes in the membrane, ...

Tips from the American Journal of Pathology

... time points than levels of conventional renal markers such as blood urea nitrogen (BUN) or urinary ... a better choice than conventional renal markers for evaluating early acute kidney injury. Future ... in Alzheimer's disease patients. They found that markers of the unfolded protein response were expressed ...

New tumor markers determine therapy intensity

... Brain Tumors" first described the new tumor markers in the medulloblastoma in 2007. For the current ... malignancies." Another advantage of the new markers the test is very robust and can be carried out ... BMBF promotes the search for other tumor markers The prospective validation of ...

New genetic markers for ulcerative colitis identified, researchers report in Nature Genetics

... of Medicine researchers has identified genetic markers associated with risk for ulcerative colitis. The ... enabled systematic, genome-wide searches for gene markers associated with common human diseases, and the ... predispose individuals to ulcerative colitis, markers specific for ulcerative colitis had yet to be ...

Genetic risk factors may tailor prostate cancer screening approaches

... interested in looking at how these genetic risk markers can be used for assessing the risk for prostate ... with family members with the disease. Can these markers be used as an indicator of upcoming prostate ... in the study. When comparing these five genetic markers in high-risk Caucasian men with men already ...

Researchers discover that growing up too fast may mean dying young in honey bees

... manipulate the onset of foraging and compare markers of oxidative damage and antioxidant mechanisms ... vs. afternoon), with the prediction that such markers are prevalent in high-intensity tissues, ... mitochondrial H2O2 production were measured as markers of oxidative damage. The Preliminary Study ...

Accelerated bone turnover remains after weight loss

... weight loss. Researchers examined protein markers of bone breakdown and formation in 37 obese, ... intake after weight loss, the bone remodeling markers did not respond and remained above what they were ... status did not affect changes in bone remodeling markers and body weight. Previous studies have reported ...

Scientists find potential protein biomarkers for growth hormone

... It's still early to tell whether these protein markers have the same age limitations, as the mice in the study live to only 2 years. But the markers may have longer half lives of several days, which ... the World Anti-Doping Agency to look for protein markers in blood and tissues of human subjects exposed to ...

Testosterone replacement theraphy beneficial in men 60 and older

... for five months has a positive effect on the bone markers of older men. This is the first known study to ... Administration for Five Months Reduces markers of Bone Turnover in Older Men. Dr. Dillon is ... intervals throughout the study to examine serum markers of bone metabolism. The Preliminary Study ...

Autism Speaks collaborates on grant with the Allen Institute for Brain Science and autism expert

... grant will allow scientists to examine molecular markers of genetic activity in the brain of patients with ... has characterized an extensive library of gene markers for specific populations of cells in the cortex. The researchers will study these markers to determine if different cell populations are ...

U-M researchers release most detailed global study of genetic variation

... latest study characterizes more than 500,000 DNA markers in the human genome and examines variations ... genes should require the fewest number of genetic markers among Native Americans and the greatest number of markers among Africans. The results are being made ...

Feinstein researchers develop new genetic method and identify novel genes for schizophrenia

... for Medical Research have identified nine genetic markers that can increase a persons risk for ... If a person inherits identical copies of these markers from each parent, his or her risk for ... neurons. In genetic parlance, several of these markers demonstrated high penetrance, meaning that their ...

UW launches cutting-edge DNA 'fin-printing' project for salmon

... the UW this fall as research professors. Genetic markers are key bits of a fish's DNA that, when compared ... are from the same population or not. Genetic markers are being employed to study the human genome. The ... are found to be part of a run. Using genetic markers is one of the most rapidly growing fields in ...

Human embryonic stem cells remain embryonic because of epigenetic factors

... ES cell genes are modified by these epigenetic markers may explain these cells unique characteristics, ... mature adult cells. Although epigenetic markers attach themselves to the tightly wound bundle of ... change the cells DNA code. Therefore, epigenetic markers are not permanent. If they were permanent, ES ...

Scientists identify embryonic stem cells by appearance alone

... this problem researchers use various genetic markers that contain pieces of foreign DNA that cause ... Jaenisch didnt have to resort to these genetic markers in their latest experiment because the results ... spring, Wernig and Meissner relied on genetic markers to identify successfully reprogrammed cells. This ...

St. Jude influenza survey uncovers key differences between bird flu and human flu

... differences in these amino acids can be used as markers to track changes in H5N1 avian influenza strains ... and Biotechnology. If human specific markers start accumulating in bird flu viruses that ... infected humans are more likely to contain human markers than are H5N1 strains that have not infected ...

Reprogramming human cells without inserting genes

... stem cells. These genes, including OCT4, SOX2 and NANOG, are accepted as markers of pluripotency because they are active in stem cells, but become dormant ... of CellThera. "Not only does this data force us to rethink what the true markers of pluripotency may be, it suggests there is a natural mechanism at work ...

Prostate Cancer Translational Research in Europe meeting: Search for biomarkers continues

... scientific topics such as the search for diagnostic and prognostic markers for prostate cancer. Dr. Thorunn Rafnar (Reykjavic, IS) spoke on the ... in order to look for new biomarkers. But the search for prognostic markers needs a multi-targeted approach. "The focus should be on the benefit to ...

Researchers identify new risk factor gene for rheumatoid arthritis

... studies, genetic samples from about 2,000 patients were used to identify markers associated with risk for RA. In the latest study, the scientists analyzed ... diseases. But this is just the beginning, added Dr. Gregersen. Today, most markers that are used to identify genes represent variants that occur in more than ...

New genomic technique uncovers coral transcriptome

... BMC Genomics , features the most extensive database of genes and genetic markers currently available for any coral. A collaborative team of researchers ... genes on the basis of sequence similarity with known proteins, over 30,000 markers of genetic variation, and a number of novel candidate genes for ...

Amniotic fluid may provide new source of stem cells for future therapies

... seven and 35 weeks of pregnancy. Amniotic fluid (AF) cells that had markers similar to bone marrow stem cells (termed AFKL cells) were then isolated for use in experiments, as these cell markers were indicative of progenitor cells (cells that have the capacity to ...

Hopkins scientists ID 10 genes associated with a risk factor for sudden cardiac death

... With DNA microarray chips, each able to assess hundreds of thousands of markers in each sample, followed by bioinformatic techniques to increase the number of markers, the researchers screened approximately 2.5 million markers to detect subtle alterations in the sequences of these genomes that modify ...

Genetic irregularities linked to higher risk of COPD among smokers

... Scientists at Duke University Medical Center have discovered two genetic markers that appear to put some smokers at significantly higher risk of developing ... genome-wide association study of COPD and suggest that those who carry the markers may be able to reduce their risk if they quit smoking before the first ...

Researchers identify genetic markers for aggressive head and neck cancer

... Einstein College of Medicine of Yeshiva University have identified genetic markers that signal poor outcomes for patients with head and neck cancer. These ... confirm these results in a new patient population and to find additional markers that would allow us to develop a reproducible and accurate prognostic ...

UMMS researchers publish DNA identification of czar's children

... II with a great degree of confidence. The analysis of Y- chromosome markers demonstrated further the link between the bone fragment of putative ... distant paternal relatives which must have inherited the same Y-chromosome markers from their common Imperial ancestor." While DNA is present inside the ...

Biologists solve mystery of black wolves

... VonHoldt conducted a genome scan and studied more than 50,000 genetic markers in order to assess genetic variation across wolf populations in relation ... even behavioral traits," Wayne said. "We then examine the genes near those markers and identify candidates that may be responsible for the specific trait. ...

Studies examine genetic determinants of ADHD

... of individual ADHD patients. The study examined more than 600,000 genetic markers in over 900 families from the largest genetic study of ADHD, the ... in ADHD children. Dr. Faraone and his colleagues, examined genetic markers across the entire human genome to search for genes that may someday be ...

Snails and humans use same genes to tell right from left

... you can't track it down using the standard approach of looking for genetic markers because there are not yet enough markers in snails, so we looked for any molecular entry into the cause of ...

DOE Joint Genome Institute completes soybean genome

... Science in 2006. "We have ordered and localized about 5,500 genetic markers on the sequence, which promise to be of particular importance to those ... optimize certain qualities in soybean," said Schmutz. Thousands of these markers were developed by Perry Cregan and colleagues of the USDA-ARS with support ...

Making the ultimate family sacrifice

... of tagging wild strains of D. discoideum with different fluorescent markers to see how the strains cooperate spatially and temporally during colony formation. Using these markers and Ostrowski's precise genetic profiles, the research team was able to ...

Revealing the evolutionary history of threatened sea turtles

... sea turtle species. Naro-Maciel and colleagues used five nuclear DNA markers and two mitochondrial markers to test the evolutionary relationships of all species of marine ...