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Tag: "conditions" at biology news

Wisconsin scientists grow critical nerve cells

...tors and hormones - that provide the exact growing conditions needed to steer the cells down the correct develop...change step by step, where each step has different conditions and a strict window of time," says Zhang. "Otherwise, it just won't work." To differentiate into a ...

Enzyme, lost in most mammals, is shown to protect against UV-induced skin cancer

...knownsource of damage to our DNA, but under normal conditions humans andother mammals are capable of removing UV-induced DNA damage by a DNArepair mechanism called nucleotide excision repair. Insufficient repairof UV-induced DNA damage, which for example may occur after excessiveunprotected sunbathing, can lead...

Priming embryonic stem cells to fulfill their promise

...ly available reagents andmachinery to optimize the conditions needed to optimize embryonic stemcell differentiation."Bhatia is planning further studies on generating liver cells fromembryonic stem cells to make an artificial liver. She plans to seekfunding to further her artificial liver research from the newCa...

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...inated by Neu5Gc evenwhen grown in special culture conditions with commercially availableserum replacements, app.... More research isneeded to understand the optimal conditions for preparing human cellsfor therapeutic application.""We considered that one partial solution to th...

Drug That 'Tags' Decision-making Areas Of The Brain May Aid

...g studies of nicotine addiction and other clinical conditions inwhich these brain regions have been implicated,?Mukherjee said.He found in animal tests that Nifrolidine binds to receptors in thetemporal and frontal cortex, areas that are responsible for learningand memory as well as reasoning, planning, problem...

Study Links Ebola Outbreaks To Animal Carcasses

...ase to families and hospital workers, creating the conditions for an epidemic in the process. Between August 20...e therefore critical to the early detection of the conditions that can lead to deadly health emergencies." ...

New Technique for Tracking Gene Regulators

... or blood ?as well as what mightgo awry in certain conditions like cancer. TheBrookhaven scientists, together with collaborators from Oregon Health& Science University, Emory School of Medicine, and Stony BrookUniversity, have published the first results using their technique inthe December 29, 2004 issue ...

HIV Patients May Be at Risk of Heart Problems When Taking Protease Inhibitor Drugs

...aboratory that specializes in various diseases and conditions that make a person vulnerable to sudden death by a ventricular arrhythmia. There are several specific actions physicians can take to use this new information wisely, Drs. Ackerman and Badley say. The first is to screen by electrocardiogram for heart...

Researchers reveal the infectious impact of salmon farms on wild salmon

...d salmon, are aquatic feedlots providing the ideal conditions for the breeding and spread of sea lice amongst the adult fish. For the migrating wild salmon, the farm is a concentrated point source of infectious lice larvae. "We found lice levels exceeded what we would find normally, extending for 30 km ?even t...

Female sex hormones play a vital role in defense against sexually transmitted diseases

... "The results directly indicate that the hormonal conditions that provide protection against primary exposure to sexually transmitted viral infections may be very different than those that may be useful in vaccination strategies," said Kaushic. "There is of course the flip side to this as well. Our studies in...

Gene variations explain drug dose required to control seizures

...psy set the stage for scientists to evaluate other conditions in which gene-based diagnostics might help determine the optimum dosage of particular therapies for particular patients, Goldstein said. "For most drugs we know a lot about how and where they act in the body," Goldstein said. "The current results su...

Scientists rid stem cell culture of key animal cells

...evaluating the effect of changing stem cell growth conditions - using less feeder cell material, or no serum replacement, for instance. Unexpectedly, Xu found that the presence of serum replacement promoted stem cell differentiation. Digging deeper, he found that serum replacement mimics the activity of bone m...

UCSD researchers maintain stem cells without contaminated animal feeder layers

... stem cells cultured for several weeks under these conditions showed no change in cell form and structure. The team then eliminated each factor and pluripotency was assessed. At first, the results were narrowed to three molecules, with activin A, a protein that participates in cellular growth and differentiatio...

Highly adaptable genome in gut bacterium key to intestinal health

...erial species to survive rapidly changing nutrient conditions but also helps maintain the functions and stability of the gut's highly complex microbial society, according to researchers at Washington University School of Medicine in St. Louis. Their findings are reported in the March 25, 2005 issue of the jour...

Amino acids in nectar enhance butterfly fecundity: A long awaited link

...es raised under natural, nitrogen poor larval food conditions laid more eggs when fed nectar containing amino acids. These results provide the long missing evolutionary link between costly nectar amino acid production by plants, nectar preferences of and fitness benefits to butterflies. This article by Jovanne...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...community from one that does well in nutrient-rich conditions to one that does well in nutrient-depleted conditi...and maybe it won't be exactly like it was, but the conditions are there for a successful restoration of the native biodiversity." ...

Gene Therapy For Parkinson's Disease Moves Forward In Animals

...led the striatum. They then induced Parkinson-like conditions by introducing a drug to destroy the dopamine-producing cells. Seventeen weeks after that, not only did the GDNF-treated monkeys show improvement in performing tasks, analysis of brain tissue showed the animals' dopamine systems were actually spared ...

New protein discovered by Hebrew University researchers

...mes that break down proteins or exposure toextreme conditions such as boiling, excessive acidity, salinity,organic solvents or detergent solutions. Theresearch was conducted at the Hebrew University's Faculty ofAgricultural, Food and Environmental Quality Sciences in Rehovot byProf. Arie Altman, head of the fa...

The death of a very special chimpanzee

...mes that break down proteins or exposure toextreme conditions such as boiling, excessive acidity, salinity,organic solvents or detergent solutions. Theresearch was conducted at the Hebrew University's Faculty ofAgricultural, Food and Environmental Quality Sciences in Rehovot byProf. Arie Altman, head of the fa...

New research indicates a 'troubled' greenhouse is brewing

...his case, the word "troubled" refers to the stormy conditions shown to have been in play during a well-known greenhouse event some 55 million years ago during the late Paleocene epoch. Retallack explored the relationship between seasonality and rainfall in soils, then applied the same techniques to buried soils...

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(Date:4/18/2014)... that sprout as soon as they,re planted may be good ... more careful. In the wild, a plant whose seeds sprouted ... disaster. More than just an insurance policy against late frosts ... has long-term advantages too: Plants whose seeds put off ... species, finds in a team of researchers working at the ...
(Date:4/18/2014)... of researchers led by a University of California, Riverside ... $7.5 million Department of Defense grant to uncover fundamental ... for the predictable design of light-weight, tough and strong ... from plants and animals, including the mantis shrimp, toucan ... have constructed over millions of years and coming up ...
(Date:4/17/2014)... A drug under clinical trials to treat tuberculosis ... drugs that act against various bacteria, fungal infections and ... University of Illinois chemists and collaborators. , Led by ... determined the different ways the drug SQ109 attacks the ... target other pathogens from yeast to malaria and ...
Breaking Biology News(10 mins):Plants with dormant seeds give rise to more species 2Mantis shrimp, toucan and trilobite, oh my 2Mantis shrimp, toucan and trilobite, oh my 3Multitarget TB drug could treat other diseases, evade resistance 2
(Date:4/18/2014)... is being prepped to enter the battle against ... certain diseases in remote areas, thanks in part ... aboard the International Space Station on the behavior ... of capillary flow to diagnose infectious diseases such ... a researcher at Northwestern University in Evanston, Ill., ...
(Date:4/18/2014)... one of your worst memories? How did it make ... during a negative personal experience, such as how sad ... to emotional distress, especially when you can,t stop thinking ... up, thinking about the context of the memories, rather ... effective way to alleviate the negative effects of these ...
(Date:4/18/2014)... This news release is available in French . ... breakthrough could revolutionize surgical practice and regenerative medicine. A ... Molle et Chimie (CNRS/ESPCI Paris Tech) and Didier Letourneur ... and Paris 13), has just demonstrated that the principle ... used in vivo to repair soft-tissue organs and tissues. ...
(Date:4/17/2014)... variant specifically associated with the risk of a ... cent of all breast cancer cases. , The ... called invasive lobular carcinoma, gives researchers important clues ... of breast cancer, which can be missed through ... the journal PloS Genetics , was co-led ...
(Date:4/17/2014)... Experimental Biology and Medicine a multidisciplinary ... Paul Kenis in the Institute of Genomic Biology ... Illinois Urbana-Champaign describe their recent work on subcellular ... of cell functions including energy metabolism, signaling, and ... regulating normal cellular behavior, redox status has been ...
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