Tag: "substance" at biology news
Powerful Anti-AIDS Agent Found In Tears And In Urine Of Pregnant Women
...sent in tears and saliva as the long-soughtmystery substance
in the urine of pregnant women that is a powerful anti-HIVagent. The new finding helps explain why AIDS cannot be transmitted throughsaliva, and opens the way to an entirely new class of anti-AIDS medicines,according to a new study by the NYU and NIH...
University Of Pittsburgh Involved In First Successful Example Of Gene Therapy For Pain Control
... and the release of the potentially pain-relieving substance
isself-limiting because it is triggered only when ...proenkephalin. Onceproduced inside the body, this substance
is enzymatically processed intoopiate-like peptides known as enkephalins. The researchers placed th...
Chinese Condiment Cuts Blood Cholesterol
...dyeast than that found in Cholestin. "As a natural substance
there are hundreds of potentially active ingredients inCholestin that could have contributed to the cholesterol lowering. Cholestincontains a range of HMG-CoA reductase inhibitors that probably contribute to theeffect," Rippe say. "The Chinese study...
Molecular Effect Of Vitamin E On Plaque Formation Identified
...araj said. This enzyme, 5-lipozygenase, produces a substance
that stimulatesthe release of the protein interleukin-1beta (IL-1beta), which promotes plaqueformation. Studies have shown it stimulates adhesion of white blood cells ormonocytes to the arterial lining, promotes uptake of cholesterol by the cellsand ...
Researchers Find Unexpected Feature In Plankton Nervous System
...ecies Undinulavulgaris are coated with myelin -- a substance
generally thought to be limited,with very few exceptions, to humans and other vertebrates. If upheld, theirfindings, which are reported in the April 15 issue of the journal Nature, willrequire revision of basic biology textbook discussions of the dif...
Cedars-Sinai Medical Center Physicians And Scientists Present Findings At Annual Meeting Of The Pediatric Academic Societies
...l growth and other activities.When wortmannin -- a substance
that inhibits the activity of PI3 Kinase and isknown to cause cell disintegration -- was introduced, the increases in cellviability and proliferation stopped. Furthermore, the added magnesium appeared to boost wortmannin's ability to causecell disin...
UV Rays, Fire And Flame Retardants To Be Reviewed For Possible Listing As Carcinogens, NTP Announces
... fragrances and in some epoxyresins. IQ, a substance
found in cooked meat and fish. Beryllium and beryllium compounds, which will be reviewed for possibleupgrading to "known human carcinogens" from the current listing as "reasonablyanticipated to be human carcinogens." In an an...
The Sagan criteria for life revisited
...ws there is a process that takes a rather abundant substance
that exists in the universe and converts it to the kinds of things that are susceptible to the origin-of-life scenario." Earth as we, the aliens, might see it.... On Christmas Eve 1968, Apollo 8 completed 10 orbits around the Moon and returned...
Drug stops blinding blood vessel growth in mice
...easing vascular endothelialgrowth factor (VEGF), a substance
that stimulates new blood vessels to grow totry to compensate. However, the back-up blood vessels generally are faulty;they leak, bleed and encourage scar tissue that detaches the retina, resultingin severe loss of vision. In macular degeneration, ...
Remarkable results from a new observatory
...us little about what really happens whena chemical substance
enters the body," said Gerald Stokes, associate laboratorydirector of the Environmental and Health Sciences Division at Pacific Northwest. Stokes compared Wind's work to a celestial observatory achieving its "firstlight." "Achieving first lig...
Growth hormone involved in diabetic kidney disease, study finds
...n which the growth hormone receptor that binds the substance
tocells had been genetically disrupted. Ten weeks later, they examined the kidneys of all the mice. While thenormal mice had evidence of diabetic kidney disease, the mice whose receptorshad been disrupted did not. "This clearly sugge...
New study finds link between decline in the city's TB rates and intensified control programs
...s andpopulations at risk, such as the homeless and substance
abusers; expanded use ofdirectly observed therapy, in which health care workers supervise the care of TBpatients; development of an HIV-related TB prevention program; improvedscreening among persons in residential care facilities, jails, and homeless...
New drug with unusual promise enters ALS pipeline
...toxic effects of the nervetransmitter glutamate, a substance
that figures prominently in the disease,Kuncl adds...spinal cord model. "Who would have thought that a substance
in eye tissueswould have this effect?" Kuncl asks. Other researchers in the project wer...
Human Genome Sciences announces the discovery of a novel immune stimulant
...ery. The discovery that monocytes produce BLyS, a substance
thatstimulates B cell growth and activates antibody production, may be the answer tothis long-standing riddle. Potential Medical Uses of BLyS The potential medical uses of BLyS may include: Treatment of Certain Immune Deficiency Syndromes Patien...
Protein in eyes may be potential treatment for leading causes of blindness
...ed pigment epithelium-derived factor(PEDF), is the substance
normally responsible for preventing blood vessels fromentering two compartments of the eye through which light must pass -- the corneaand the vitreous -- thus helping to ensure clear vision. Bouck, a professor of microbiology and immunology a...
Maybe you can get blood from a turnip after all
... hemophilia therapies, as well as factorXIII and a substance
called thrombin which are clotting enzymes thataid in healing wounds and offer an alternative to sutures and othersurgical sealants. ...
Rockefeller researchers inject cells, boost immune system in humans
...moved from thebloodstream and exposed to a foreign substance
-- can trigger a potent immuneresponse in humans t.... Dendritic cells capture antigensfrom the foreign substance
and present them to the T cells, which then know whatto seek out and destroy -- and also what to lea...
Gene therapy holds promise for treating inherited Lou Gehrig's Disease
...ounts of these potent moleculeswhere little of the substance
obtains access to the appropriate neurons. Bohn stated that the challenge will be to find a way to safely deliverthe GDNF gene in a more global manner to all affected nerve cells and also toensure that the gene 'stays on' for a prolonged time...
List of MAK and BAT values 1999 published - New classification for chemical substances in the workplace air
... themaximum admissible concentration of a chemical substance
present as gas, vapouror aerosol in the workplace ...son why sulphuric acid was classed as a category 4 substance
is thattumours developed after exposure to high acid aerosol concentrations. At thesame time the MAK...
Scientists find first molecule that guides nerve cells through the brain
...tum. This part ofthe forebrain was known produce a substance
that repels migrating neurons.Studying brain tissu...l migration. "Again, this suggeststhat Slit is the substance
in the septum that repels migrating neurons," Jane Wusays. The four papers in Cell revealed that Sli...
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