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Tag: "causes" at biology news

Emory Eye Center Implants Its First Retinal Chips In Patients With Retinitis Pigmentosa

...a is a pathologic condition that is hereditary and causes progressive retinal degeneration in both eyes. It is a general term for a number of diseases that predominantly affect the photoreceptor layer or "light sensing" cells of the retina. Night blindness develops, usually in childhood, followed by loss of...

Antibiotic Resistant Bacterium Uses Sonar-like Strategy to “See?Enemies or Prey

... known asEnterococcus faecalis, one of the leading causes of hospital-acquiredinfections, to find new ways to treat them. These infections arefrequently resistant to many, and sometimes all, antibiotics. Tens ofthousands of deaths due to antibiotic resistant infection occur eachyear in the US, adding an est...

Novel Therapy Tested in Mice Could Chase Away Cat Allergies

...called Fel d1) found in cat dander and saliva that causes so much misery in allergy sufferers. On the other end sits a piece of human antibody (called IgG Fcg1) that docks to a cell receptor that can be recruited to stop allergic reactions. The investigators named the chimeric molecule GFD, or gamma Feline...

Sea skate experiment sheds light on human cell transport

...ng a plant-based substance to block an enzyme that causes phosphorylation. The result: The gates wouldn't open. These findings are published in the current issue of the American Journal of Physiology: Regulatory, Integrative and Comparative Physiology, along with an accompanying editorial. Goldstein said t...

Yale Scientists Find MicroRNA Regulates Ras Cancer Gene

... Cancer Center, it is one of the most identifiable causes in some forms of lung cancer. His team has identif...ofound implications as we continue to focus on the causes of tumor development," said Richard L. Edelson, M.D., director of Yale Cancer Center. Other Yale re...

Needling Chromosomes Reveals Cell Division Secret

...s, and not anytension exerted by the spindle, that causes the chromatids to separate.Also intriguing, found the researchers, was that the chromatidsmysteriously remained stuck to one another at a time when biochemicalanalysis could not detect any cohesin proteins in the cell. Nicklasbelieves that the twin c...

First 'atlas' of key brain genes could speed research on cancer, neurological diseases

...gion, and which of them to investigate as possible causes ofbrain tumors and other diseases.The Dana-Farber researchers already have homed in on specific TF genesregulating nerves involved in pain sensation, certain brain tumors, andspeech problems caused by abnormally developing motor neurons thatcontrol m...

Study: Soap And Water Work Best In Ridding Hands Of Disease Viruses

...and washing flushes down the drain is the one that causes the common cold. Other removable viruses cause hep...th-care associated infections rank in the top five causes of death, with an estimated 90,000 deaths each year in the United States," Rutala said. "Hand hygien...

Researchers discover molecule that causes secondary stroke

...o the development of specific molecules that later causes the constricting vasospasm." A research team led by Dr. Clark has now identified the molecules that trigger vasospasm, a breakthrough, he says, that "raises hopes of developing not only new ways to treat the condition, but also a diagnostic test to d...

Research Gives Hope For Liver Damage

... macrophages in the liver. Onegroup of macrophages causes scarring to the liver, but the next wave ofimmune cells, produced only a few days later, change function to breakdown and reabsorb the scarring. These findings, published in theJanuary edition of Journal of Clinical Investigation, will help doctorsto...

DNA Recombination and Repair—A New Twist to RecA Function

... loaded onto DNA. At the same time, ATP hydrolysis causes the release of RecA from DNA, but the exact rate of RecA dissociation is not known. Experiments suggest, however, that RecA molecules only dissociate from DNA when they are at the fiber’s 5' end, while ATP hydrolysis occurs all along its length. Und...

Plants defy Mendel's inheritance laws, may prompt textbook changes

...didn't have the mutated gene, called hothead, that causes organ fusion like that seen in the flowers. The researchers used molecular markers - bits of DNA that help identify and locate genes in organisms - to determine whether a plant carried normal or mutant copies of the genes. "It seems that these hothe...

Research Using Mouse Models Reveals A Novel Key Player In The Initiation Of Colon Cancer

...ost layer of the colon (called the epithelium) and causes them to lose control over their proliferation leading to tumors. Now Klaus Kaestner from the University of Pennsylvania School of Medicine has headed a study that identifies another molecular player influencing the initiation of colon cancers. This...

Agilent Technologies releases automated literature search tool for biology researchers

...rstanding of molecular pathways and the biological causes of disease. The Agilent Literature Search tool automatically searches for and extracts information from multiple textual databases, such as those of the U.S. Patent Office and the National Center for Biotechnology Information (PubMed). The plug-in p...

New methods of gene delivery using lasers

...to cell membranes for a fraction of a second ?this causes the membrane to open up, allowing foreign genes to enter. The cell’s internal mechanism causes the membrane of the cell to heal itself thus appearing to suffer no long-lasting damage. After inser...

Scientists discover that host cell lipids facilitate bacterial movement

...chemistry and Molecular Biology journal. Listeria causes a variety of diseases, the most severe being meningoencephalitis, an inflammation of the brain and the membranes that envelop the brain and spinal cord. Infection begins when the bacterium binds to a receptor on the surface of a cell, causing the cel...

Implanted Devices Detect High-Risk Heart Failure Patients

.... Also known as congestive heart failure, its many causes include infections of the heart, coronary artery disease, high blood pressure, previous heart attacks and valve problems. An estimated 4.7 million Americans suffer from the condition, with 400,000 new cases reported each year. Roughly one-half of pat...

How an AIDS-Related Cancer Unleashes Inflammation

...s the Kaposi's sarcoma-associated herpesvirus that causes KS initiate cytokine production? "While there are many genes in the viral genome that are capable of inducing cytokine production, the mechanism underlying this induction has remained unknown," said Ganem. In their studies, McCormick and Ganem conc...

Protein offers way to stop microscopic parasites in their tracks

...ects 25 percent of all humans. The parasite rarely causes symptoms in most people, but can become a potentia...the brain and other organs. Cryptosporidium, which causes diarrhea, vomiting and other symptoms, is one of the most common causes of water-borne disease in th...

Rats infected as newborns grew up vulnerable to memory problems during an immune challenge

...popolysaccharide (LPS), a bacterial component that causes flu-like symptoms,. This time, the rats infected with E. coli as newborns froze 70 percent less often than the rats who'd been injected with salt water as newborns. In other words, under immune stress, the early-infected rats learned to fear the plac...

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