nucleotide

FDA Approves New HIV Drug, Viread

...V replication in the body. But Viread is the first nucleotide analogue reverse transcriptase inhibitor to be approved for treatment of HIV in the US. As a result//, it may offer a treatment option for patients whose infections have become resistant to currently available medications. Foster City, California-ba...

Mutation connected to Osteoporosis

...ed 13 of the 18 shared a GNAS1 mutation -- guanine nucleotide binding protein alpha stimulating activity polypeptide. GNAS1 controls a protein that plays a critical role in way cells function. In the case of POH, the GNAS1 mutation results in a mistaken signal to non-skeletal cells, which results in the creatio...

Identifying bacteria made amiable

...le bases or locations within genes - called single nucleotide polymorphisms - that are variable. Those bases or polymorphisms can then be interrogated using emerging DNA chip technology to obtain a genetic fingerprint. The group focused on the meningococcal bacteria because it is a significant public health pr...

Possible location of lung cancer genes found

...urnal Cancer Research, the researchers used single nucleotide polymorphism (SNP) array technology, which focuses on the building blocks of individual genes, to identify regions of chromosomes where genes were either left out or multiplied over and over – mistakes that are often associated with cancer. In this e...

Occupational Exposure To Radiation Causes Chromosome Aberrations

...ons occur in DNA [Deoxyribonucleic acid], in which nucleotide breaks occurs in the chromosomes leading to aberrations, which may lead to cancer. Earlier studies of occupational exposure to ionizing radiations where carried out by the same author at Mayak weapons complex in Russia. In plutonium exposed workers...

New DNA Breakthrough Can Change Future Of Medicine

...r differences in the genetic code, known as single nucleotide polymorphisms (SNPs), or 'snips', are represented in the HapMap. The mapping will greatly help scientists to track down particular snips associated with certain diseases. The HapMap may in future make the dream of personalized medicine into a reali...

Dog (Man's best friend) Genome Sequenced

...ted tiny spots of genetic variation, called single nucleotide polymorphisms (SNPs), which serve as recognizable ...archers also identified roughly 2.5 million single nucleotide polymorphisms (SNPs) sprinkled throughout the dog genome. SNPs are variations in the DNA code, some ...

New Study Questions Cannibalism As A Worldwide Selective Force

... specific class of DNA markers called SNPs (single nucleotide polymorphisms) for examining genetic associations with diseases or for evaluation of historical patterns of human migration. The prion protein gene (PRNP) encodes a protein that can abnormally fold and amass in brain tissues to cause fatal neurode...

Dry Earwax Mystery Solved: Ear Wax Gene Identified

...sting study represents the first example of single nucleotide polymorphism (SNP), being linked to a visible physical trait. The article appears in the latest issue of the journal Nature Genetics....

Florida State University declares a breathtaking study which might solve the Hepatitis C Virus maze and find a cure!

...ead to better, targeted treatments. Currently, any nucleotide starvation therapies, used primarily to treat cancer, can inhibit replication by depriving viral agents of their molecular building blocks. However, those therapies may impact healthy cells, as well, causing undesired side effects. That's not all. Ou...

NIH To Launch Two Major Gene and Disease Projects Soon

...oncentrate largely on the identification of single nucleotide polymorphism (SNPs) that are believed to confer enhanced or decreased disease susceptibility. A lot of financial resources have been spent on the characterization of the genetic constitution of a number of individuals that will provide adequate dat...

Human Intelligence Gene Identified By Scientists

... six DNA sequence variations, also known as single nucleotide polymorphisms (SNPs), in the dysbindin gene and found that one specific pattern of SNPs, known as a haplotype, was associated with general cognitive ability: Cognition was significantly impaired in carriers of the risk variant in both the schizophren...

Gene Variants Linked to Early Heart Attack Discovered

...ither of the two genetic variants, known as single nucleotide polymorphisms or (SNPs), has previously been associated with heart attack. VAMP8 is involved in platelet aggregation. The other gene, HNRPUL1, encodes a protein involved in RNA activity. Celera Genomics (NYSE:CRA) is an Applera Corporation busines...

Genetic Link to Adrenal Tumor Revealed

...ent in the enzyme PDE11A. This enzyme halts cyclic nucleotide production in adrenal cells as well as in other ki.... The researchers believe that these higher cyclic nucleotide levels led to the formation of tumors. The gene for PDE11A contains the information needed to mak...

Scientist Identify 3 New Cataract Causing Genes

...se, fan-shaped cataract gene is caused by a single nucleotide alteration which changes the structure of alpha-crystallin, an essential lens protein, ultimately leading to congenital cataract that is associated with microcornea. (Source:PTI News)...

Indian Scientists Identify Cataract Causing Genes

...an-shaped cataract gene that is caused by a single nucleotide alteration which changes the structure of alpha-crystalline, an essential lens protein, ultimately leading to congenital cataract that is associated with micro cornea. The second cataract-causing gene that leads to Cerulean Cataract was discovered ...

Researchers Find Molecular "Brake" to Cell Death

...ially impede apoptosis. They discovered that these nucleotide pools, in fact, act not to promote apoptosis throu... large and sustained volume of CC to overcome this nucleotide barrier, and they also found evidence that as soon as the release of CC increases, another mechanism...

Genetic Variations In Detoxifying Genes Lead To Lou Gehrig's diseases

...ngly associated with sporadic ALS. "Thus, single nucleotide polymorphism genotyping in the intergenic regions of the PON gene cluster, and replication, gene expression, gene-gene interaction and PON serum/enzymatic studies may help elucidate the complexity of PON cluster association with ALS," Siddique said. ...

Genetic Mutation in Mice Suggests Extinct Mammoth Had Light and Dark Fur

... Siberia. Because the variations occur in the same nucleotide used by the Florida beach mice to alter their coat...few suspected that the simple mutation of a single nucleotide could have such a major impact on their coloration. “We were surprised that this one gene could ex...

Mutation in the Envelope Gene May Be the Reason for the Development of HIV Linked Cognitive Decline

...nal Brain. Pillai and his associates generated 456 nucleotide sequences of HIV from the blood and cerebrospinal fluid of the study participants. They chose to focus on the viral envelope gene, which interacts with receptors on the surfaces of host cells. ‘That's the gene that's most likely to vary between tissu...

Obsessive-Compulsive Disorder Is Familial

... nearby stretches of DNA, using analyses of single nucleotide polymorphisms that look at specific differences between individuals within the gene. At the same time, the Toronto group has been focusing on that same area in studies involving adults and children with OCD and their close relatives. The new U-M, U...

Gene variants hold clues about vulnerability to cardiovascular disease

...s focused on specific gene variants, called single nucleotide polymorphisms (SNPs), which occur when a single nucleotide building block in the long strand of DNA is altered. The researchers sought SNPs that occurred more ...

AMD influenced by Variation in 3 Genes

...om methods were used to genotype about 1540 single nucleotide polymorphisms (snp's). AMD is a "common disease" meaning that it is complex, i.e., many genes and environmental factors contribute to the disease, similar to heart disease, schizophrenia and diabetes. The combinations of variation within a given ge...

A Novel Technique That Detects "Cancer Genes" From The Breath Of Smokers

... promoter region of a gene, where certain cytosine nucleotide bases may be methylated, preventing the gene from being expressed. The seven participants tested so far breathe for ten minutes into a commercially available handheld device, which cools the air, forming a condensed vapor, to which the methylation ...

Gene Linked With Aggressive 'Wet' Form Of AMD

...ome 1. Hoh now reports they have found a single nucleotide polymorphism (SNP)—a one-base change in the sequence—of the regulatory part of the HTRA1 gene on chromosome 10 that leads to greatly increased risk of developing the wet form of AMD. According to Hoh, buildup of abnormal blood vessels in Caucasian...

Genetic Variation: We're More Different than We Thought

...p collection and previously used to map the single nucleotide changes in the human genome. Scherer's team mapped...ch has focused on small alterations, called single nucleotide polymorphisms (SNPs). It may be, said Scherer, that some diseases are caused by copy number variatio...

Researchers Discover Internal Compass of Immune Cells

...e source of chemoattractants. Next, ATP binds to a nucleotide receptor called P2Y2 on the cell surface, a step critical to position the cells in the direction of the source of chemoattractants. Once this internal compass has been activated, ATP is converted by the cells to adenosine, which in turn activates ...

Surprising Interaction Between Genes, Gender, and Hypertension

...n a single gene on the chromosome, called a single nucleotide polymorphism (SNP, pronounced “snip”). Examples of so-called SNP diseases are sickle-cell anemia and Huntington’s disease, where a single variant or mutation has a dramatic effect. In contrast to these single-gene-specific diseases, the UCSD resea...

Renegade RNA: Clues to Cancer and Normal Growth

...ibutor to the study. Consisting of only 20 to 25 nucleotide building blocks (compared to other types of RNA th... contain elements consisting of short stretches of nucleotide building blocks that can control their behavior in a cell. Mendell hopes to take advantage of the bu...

Effects of Multiple Copies of Genes on Disease Risk

... changes in the genetic code known as SNPs [single nucleotide polymorphisms]." Graubert's lab uses human samples and mouse models to study leukemia, cancer that occurs in the bone marrow cells that make blood cells. Using Nimblegen's technique for assessing gene copy number, they identified approximately 80 ...

Simple Blood Test may Replace Invasive Prenatal Tests

... material of the fetal DNA, by studying its single nucleotide polymorphisms, or SNPs. The test was performed on 60 pregnant women. The test proved accurate in 58 of these cases and reported two misdiagnoses. Writing in the Lancet, Alexandra Benachi and Jean-Marc Costa, of Paris-Descartes University, said t...

Hope for Noninvasive Prenatal Test

...omal abnormalities by analysing an array of single nucleotide polymorphisms (SNPs, pronounced "snips")--tiny variations in the DNA sequence of individuals. The researchers established the ratio of SNPs on different chromosomes, which enabled them to determine whether the fetus had chromosomal abnormalities. ...

Genetic Test for Type II Diabetes Moves Closer

...ter treatments.” The researchers used two single nucleotide polymorphism (SNP) comparative genomic hybridization (CGH) platforms for identifying the gene mutations; Illumina's Infinium Human1 and Human Hap300 Beadarrays. The study confirmed the association of mutated TCF7L2 genes with an increased risk of d...

Human Genetic Code for ALS Identified

...lateral sclerosis (ALS). The 34 so-called single nucleotide polymorphisms, or SNPs, represent good candidate genes predisposing people to the non-inherited form of the fatal neurodegenerative disease. “Although we haven’t located the exact gene responsible for sporadic ALS, our results seriously narrow the ...

Gene Hunters at Johns Hopkins Close In On Lou Gehrig's Disease

...ated subjects with ALS. The 34 so-called single nucleotide polymorphisms, or SNPs, represent good candidate genes predisposing people to the noninherited form of the fatal neurodegenerative disease. 'Although we haven't located the exact gene responsible for sporadic ALS, our results seriously narrow the ...

Major Gene Study Uncovers Secrets of Leukemia

...nvestigate more than 350,000 markers called single nucleotide polymorphisms. Single nucleotide polymorphisms are individual variations in the DNA that are spaced across the human chromosomes. Sin...

Gene Variants Linked to Preterm Birth in Hispanic Women

...128 well-known genetic variations, known as single nucleotide polymorphisms, in 77 genes between the two groups. The patients in the study were identified from the March of Dimes Perinatal Epidemiology Research Initiative Project at Yale and New York University between January 1989 and June 2005. "Our analysi...

Not Parkinson’s Disease Alon

...milies of European American descent. Thirty single nucleotide polymorphisms (SNPs) were genotyped across the SNCA gene, and two phenotypes – alcohol dependence and alcohol craving – were also analyzed. Although findings indicate no association between any of the SNCA SNPs and alcohol dependence, eight SNPs di...

Study Finds Dietary Fat Interacts With Genes

...lyzed several common gene variants known as single nucleotide polymorphisms (SNPs) of the apolipoprotein A5 gene (APOA5), which produces a protein (APOA5) involved in the metabolism of fats in the body. For 13 percent of people in the study with a specific SNP (-1131T>C), dietary fat intake was not signific...

Parkinsons Disease can Be Predicted by Metabolic Pathway

...ndreds of thousands of common DNA variants (single nucleotide polymorphisms or SNPs) in 443 Parkinsons disease patients and in 443 control subjects; the controls were unaffected siblings. Researchers identified SNPs within axon guidance pathway genes and used statistical methods to identify combinations (model...

New Developments in Rheumatoid Arthritis

...to use modern genetic methods to search for single nucleotide polymorphisms, or SNPs, to identify players that have fallen under the radar of older methods. The group has discovered another signaling molecule that seems to increase a persons risk for rheumatoid arthritis by 30 percentIn collaborations with othe...

New Insights into Antimalarial Drug Resistance

...hange the parasite gene sequence -- which combines nucleotide base pairs in a way that is found in no other life form -- into one that could be read by yeast. The yeast are then able to produce the PfMDR1 protein, in its proper sequence, from this synthetic gene. They previously used this same technique to c...

Gene Responsible for Blindness in Infants and Children Identified

...rma Lopez, used a new technique called SNP (single nucleotide polymorphism) technology to identify homozygous regions in the genome, which led to the discovery of the new gene called LCA5. In the past, large families were necessary to find genes, but in this study only samples from one Quebec and one American...

Researchers Identify the Gene Mutation That Raises Breast Cancer Risk

... small changes in the genetic code known as single nucleotide polymorphisms (SNPs) that are associated with breast cancer. They found that women who carried one faulty copy of FGFR2 had a 20 per cent elevated risk of breast cancer, while those with two altered versions faced up to a 60 per cent greater chance...

Protein Folds Research Offers Insight into Metabolic Evolution

...ot of sense that weve found this origin encased in nucleotide metabolism....

Gene Variant Responsible for Acquiring Intellect and Memory in Humans Identified

...rough a single mutation in the DNA, when a thymine nucleotide was exchanged for an adenine, causing 45 additional amino acids to be loaded into the protein that the gene expresses. Boffins say that the changes make humans' neuropsin II significantly different from the neuropsin made by other mammals. "It wo...

Boffin Identifies Gene Causing Otosclerosis

...ssed in otosclerotic bone. They used SNP (single nucleotide polymorphism) analysis, or looking at DNA sequence variations occurring in a single nucleotide, A, T, C or G, to study a large patient and control population from Belgium and The Netherlands. They found significant results for an amino acid changing ...

Genetic Variation may Increase Premenstrual Depression Risk

...ered four specific genetic variants, called single nucleotide polymorphisms, in one of the two genes that encode the estrogen receptor. The variants, which are differences in strings of DNA nucleotides A, G, C, or T, were identified in the estrogen receptor alpha gene, ESR1. The scientists found that compared...