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Tag: "group" at biology news

Secret of worm's poison pill box protein could produce new natural insecticide

...lleagues with expertise in the Structural Biology group in Biological Sciences and in Chemistry at The University of Warwick, as well as Coventry and Nottingham Universities, found that the protein was formed from four sub units in the shape of a hollow cage or box which is configured to bind well to par...

New sucker-footed bat discovered in Madagascar

...the island from east to west. Bats are the last group of land mammals on Madagascar that have not been intensively studied, Goodman said. "Until a decade ago, these animals remained largely understudied. On the basis of recent surveys and taxonomic research, about one-third of the island's bat species w...

A rarity among arachnids, whip spiders have a sociable family life

... and later returned to cages with either their own group or an unfamiliar group, they reacted more aggressively toward the new group than their own. Rayor suspects that benefits of whip spider social behavior include enhanced safet...

Molecular differences between early and advanced melanomas could provide new drug targets

...t expressed high levels of VEGF, whereas a control group of mice developed no tumors. Another result of Akt overexpression was the increased production of reactive oxygen (ROS). Reactive oxygen is created during cellular metabolism and has long been associated with triggering angiogenesis and the resul...

Penn study on olfactory nerve cells shows why we smell better when we sniff

...y air flow to the nostrils while breathing. The group did this first by puffing a chemical stimulus into...rain, signaling that it is smelling something. The group discovered that chemical and mechanical stimuli both resulted in the same messenger molecule, cAMP,...

First-degree fetal heart block may be reversible

...y before there is permanent scarring. The PRIDE group conducted a longitudinal (observational) study following over 100 women with the anti-Ro and anti-La antibodies to determine if there were early signs of fetal heart problems. They also explored whether early treatment would reverse the problems. ...

Why doesn't the immune system attack the small intestine?

...n Turley, PhD, of Dana-Farber identify an unlikely group of peacemakers: lymph node cells that instruct key immune system cells to leave healthy tissue alone. The finding, which illuminates a previously unknown corner of the human immune system, may lead to new forms of treatment for autoimmune diseases su...

Blame the brain for high blood pressure

...tension. Dr. Hidefumi Waki, working in a research group led by Professor Julian Paton, has found a novel role for the protein, JAM-1 (junctional adhesion molecule-1), which is located in the walls of blood vessels in the brain. JAM-1 traps white blood cells called leukocytes which, once trapped, can ...

Turning green gunk to gold, anti-cancer gold

...-becomes attached to the molecule. The epoxide group can be attached in two configurations, designated as alpha and beta. Scientists have known for several years that the beta configuration was absolutely required for the anti-cancer properties of the drug, but were unable to devise efficient synthetic...

Vasectomy may put men at risk for type of dementia

...s vasectomy. At a twice-yearly Chicago support group for PPA patients Weintraub sees from around the co...ther form of dementia to a vasectomy. In a smaller group of 30 men with a dementia called frontotemporal dementia (FTD,) 37 percent had undergone a vasectomy...

Novel antigen-cloning technique may boost efforts to develop a melanoma vaccine

...n recognized by a helper T cell. Already, Herlyn's group has used the new cloning technique to identify a n...ext with their own HLA class II. Herlyn and her group now plan to use the RPL8 antigen to develop a melanoma vaccine for patients with advanced disease. "...

Tumor-suppressor gene is critical for placenta development

...proteins ?remains unknown. In 2003, Leone and a group of collaborators discovered that loss of the Rb gene caused abnormalities in the placenta, especially where it contacts the uterus. They published that research in the journal Nature. "This was the first evidence that Rb had an important role in t...

Infection detectives use disease 'fingerprints' to track common infections in children

...gen it is, we still can tell which family or which group it’s in, so if someone engineers a virus that has never been seen, we will have hints that it’s close to something that is known," he said. Further studies may eventually help doctors track the progression of disease and help assess risks of compl...

Wheat can fatally starve insect predators

...nd that a specific protein, called HFR-3, one of a group of substances called lectins, is capable of binding with a carbohydrate complex in the Hessian fly larvae. The lectin acts as a key to the carbohydrate structure, known as a chitin. When the larvae attack a resistant plant, the plant's lectin prod...

Scientists find method to pick noncompetitive animals, improve production

...howed that choosing less aggressive animals from a group for breeding purposes increases productivity. In the latest research, the scientists show that aggressiveness and all other traits affecting social interactions are inherited and can be estimated. They also found that by using the new tool they were ...

University of Alberta researchers unravel intricate animal patterns

...rganize as a unit, without knowing what the entire group is doing? New research by University of Alberta sc...il now, the connection between the complex spatial group patterns that we can see in nature and the different ways animals communicate, has not been stated e...

Darwin's famous finches and Venter's marine microbes

...led "scaffolds" are a treasure trove for a diverse group of scientists, who try to squeeze as much information as possible from the largest metagenomic dataset ever collected. For more information about the expedition, please go to: the J. Craig Venter Institute (URL: www.sorcerer2expedition.org and www...

Surgeons develop simpler way to cure atrial fibrillation

...d of reserving the Cox-maze procedure for a select group of patients, we would urge use of this device for ...y matched the age, sex and cardiac conditions of a group of patients who underwent Cox-maze III in the past with patients undergoing Cox-maze IV. "This is th...

New cell type identified in cancer development

...presented different levels of immune function: One group was comprised of severe combined immune deficient mice, a second group was composed of mice whose immune systems had been knocked out by radiation, but had been partially ...

Ebola outbreaks killing thousands of gorillas and chimpanzees

... day. Thus, infective body fluids deposited by one group might easily be encountered by a subsequent group....d the first evidence that gorillas from one social group closely inspect the carcasses of gorillas from other groups. Contact with corpses at funerals is a m...

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