Tag: "gamma" at biology news
Researchers Pinpoint Site For Petit Mal Seizures In Brain
...y, and respond to a neurotransmitter signal called gamma
aminobutyric acid, or GABA, which is one of a dozen or so known neurotransmitter molecules. GABAb receptors are thought to act as a brake on nerve cell activity, Hosford said. But their exact function in the brain is unknown. Using a mouse prone to p...
Duke's Russian Laser Making Ultraviolet Light And Gamma Rays
...es. The device also is producing intense beams of gamma
rays, which other physicistshope will help answer ... physicists had also induced the system to produce gamma
rays by collidingthe laser beam with the same electron beam that feeds it. Duke's FEL Laboratory is...
DT104 Advice:How To Slow Salmonella Spread
...urry pits andstagnant water. UV rays and beta and gamma
irradiation have a bactericidaleffect on salmonella, as do cleaning solutions of chlorine, iodines, ammoniumsand phenolics. However, many salmonella strains are relatively resistant tofood-preservation methods such as drying, salting and smoking. --...
Fetal Lead Exposure May Reduce Immunity
... helper T-cell activity, diminished production of gamma
interferon, depressed cell-mediated immune function, as well as elevated levels of nitric oxide tumor necrosis factor and IgE antibodies. These are all indications, in the complex checks-and-balances realm of immunity, of a developing body that is i...
Interleukin-12 Helps Control Mycobacterium Avium Infection
...fections like MAC. IL-12 can stimulate interferon gamma
even in the absenceof T cells, a potential advanta...tself, even at a higher dose than IL-12,interferon gamma
was not more effective at clearing the bacteria thanantibiotics alone. Speaking of the newly opened ...
New Biomaterial Has 'Star' Power
...ing sites for cells or antibodies." Keys used gamma
radiation to coax the star polymers into forming a gel, which is a new method of gel preparation. Her methods give the gels superior mechanical stability while maintaining a large number of active groups on the arms, Peppas says. Keys' research ...
Digging In And Taking Cover
...y comprises electromagnetic radiation - X-rays and gamma
rays - and particulate radiation - high-speed particles like electrons, protons, neutrons, and atomic nuclei. Low-energy radiation can be stopped by a spacecraft wall, but at higher energies the wall helps produce showers of secondary radiation, like...
Gene Discovery Provides Insights Into Epilepsy
...ation results in the nearlycomplete absence of the gamma
subunit protein, named stargazin, thereby altering...years later, his lab reported the structure of the gamma
subunit."The gene we found initially was for the gamma
subunit present in skeletalmuscle calcium cha...
Stargazer Gene Provides New Clues To Calcium Channel Defects In Absence Epilepsy
...haracterized the gene -- Cacng2,or calcium channel gamma
2 subunit -- in which the mutation resides. Thebr...evidence that calcium channels in the brain have a gamma
subunit, and thefirst connection between gamma
subunit function and calcium channel defects inabsenc...
Diabetes Drug And Accutane Block Breast Cancer Cell Growth, Cedars-Sinai Researchers Find
...rcalled peroxisome proliferator-activated receptor gamma
(PPARg), and a retinoid(Vitamin A) receptor. Accutane may then bind to this combined receptor. Theactivated receptor complex causes a protected gene within the cancer cell to bemodulated. That gene, bcl-2, is associated with programmed cell death....
NASA Using Space Incubator To Understand Breast Cancer
...mponents, photons - ultraviolet light, X-rays, and gamma
rays - and particles - naked atomic nuclei blasted out from supernovas. "Ionizing" means the radiation can energize atoms and molecules to break existing chemical bonds and form new ones. If it hits the right section of a a gene, the cell is ordered ...
Study Furthers Understanding Of Critical Alzheimer's Disease Gene
...understood enzyme that is involved inthe clipping, gamma
secretase. The current research suggests that either PS-1may be the long sought gamma-secretase, or that PS-1 is essential for gammasecretase's ability to clip amyloid. The study of mutated PS-1 protein was published in the April 8, 1999 issue ofNa...
Mixing Radiation, Minerals, Toxic Waste Could Be Cleanup Boon -- Or Kaboom
... can greatly accelerate chemical reactionsin which gamma
rays break down toxic chlorinated chemicals. Silic...ufacture, such as cobalt-60. The good news is that gamma
irradiation thus may be an effective means ofdegrading some highly toxic pollutants, such as dioxin ...
Dietary Lutein Inhibits Mammary Tumor Growth And Normalizes Immune Balance In Tumor-Bearing Mice
...Also, luteinincreased the production of interferon gamma
(IFNg) and interleukin-2. Researchers concluded that lutein normalized the immune balance in thetumor-bearing mice and increased the production of IFN, thereby maintaining aneffective anti-tumor response. Dr. Chew's previous research established tha...
Technotes -- Pacific Northwest National Laboratory's summer news tipsheet
...es portable,real-time measurements of neutrons and gamma
rays. Called PUMA for plutoniummeasurement and analysis, the sensor can be embedded in a variety of materialsor literally wrapped, like fingers, around objects of various shapes to analyzecontents. The technology is adaptable to a wide range of appl...
Pacific Northwest developments earn spots in top 100 list
...s portable, real-time measurements of neutrons and gamma
rays. CalledPUMA for plutonium measurement and analysis, the sensor is both more flexibleand rugged than rigid gas tube sensor technology. The fibers emit light toindicate various levels of radiation and can be embedded in a variety ofmaterials or ...
Gene alterations may predict response to new cancer therapy
... proliferator-activated receptor gamma
(PPAR-gamma or PPARg), that helps fat cells mature. The protein is also important for the metabolism of fats and sugars bycells. The study was published in a recent issue of Molecu...
Disconnecting molecular handbrakes has drastic consequences
...ing out the cytokine, interferon gamma."Interferon gamma
is a powerful immune system stimulator produced by T cells. Finally, explained Ihle, SOCS1 also controls the response of variouscells to interferon gamma, and its absence makes the cells highly sensitive tothe substance. Given such broad regulator...
Genetic information of world's most radiation-resistant organism decoded
...pink bacteria that can survive 1.5 million rads of gamma
irradiation - a dose 3,000 times the amount that w... canned meat that were thought to be sterilized by gamma
radiation. Colonies of non-pathogenic bacteria growing on the spoiled meat turned out to be the rad...
Parathyroid tumors can be removed safely in outpatient procedure
...oidism and is absorbed by the overactive gland. A gamma
cameraplaced over the patient's neck picks up the location of the overactive gland. The scan paints anaccurate picture in about 90 percent of patients. Then, using the scan as a guide, doctors remove the diseased gland through a one- to two-inchinc...
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