Tag: "reactive" at biology news

Glucose triggers brain cell death in rats after hypoglycemic coma

...ve stress occurs when cells are poisoned by highly reactive forms of oxygen. Previously, it had been assumed that oxidative stress in neurons was initiated primarily by mitochondria, which process oxygen for energy within cells. The paper appears in the April 2007 issue of the Journal of Clinical Investiga...

Scientists find major susceptibility gene for Crohn's disease

...tification of the NCF4 gene indicates that altered reactive oxygen species (ROS) production, important in the generation of an effective anti-microbial response, may lead to increased risk to developing Crohn's disease." The fact that the authors also found strong association of the ATG16L1 gene provides f...

Scientists find new genes for Crohn's disease

...NCF4 gene indicates that the production of altered reactive oxygen species, which are important in the generation of a protective response against microbes, may lead to an increased risk of developing the condition. Particularly interesting to the authors was the association between Crohn's and variations i...

Scientists find major susceptibility genes for Crohn's disease

...tification of the NCF4 gene indicates that altered reactive oxygen species (ROS) production, important in the generation of an effective anti-microbial response, may lead to increased risk to developing Crohn's disease". The fact that the authors also found strong association of the ATG16L1 gene provides fur...

Researcher focuses on pros, cons of antioxidants from fruits and vegetables

...s." This can be important to health since these reactive oxygen species or 'free radicals' may play a role in some diseases, including Alzheimer's, cancer and atherosclerosis, she said. "However, other mechanisms, including the prevention of chronic inflammation and interaction with intracellular mechan...

A steady, high-fat diet is bad, but the news gets worse

...hat even a single, high-fat meal can make you more reactive to stress, its cause for concern because it suggests a new and damaging way that a high-fat diet affects cardiovascular function." In the study, 30 healthy young adults fasted the night before, then consumed either a high- or low-fat breakfast....

Deactivating protein may protect nerve fibers in MS

...including the development of free radicals such as reactive oxygen and nitrogen that slow the cell's energy generation capability. It also throws off mitochondrial function by causing calcium to build up in the cell, reducing levels of ATP that serves as the cell's fuel source. But scientists believe that c...

Antioxidant found in many foods and red wine is potent and selective killer of leukemia cells

...-R induced the accumulation of peroxides, a highly reactive form of oxygen, which, in turn, activated a mitoch...R, they did not find any increased accumulation of reactive oxygen species and there were no apparent toxic effects on these cells. Previous studies have show...

News tips from the Journal of Biological Chemistry

...l-known for killing cells. These molecules, called reactive oxygen species, destroyed the cancer cells while sparing the surrounding healthy blood cells. These results could be used to develop new anticancer drugs, the scientists concluded. Article: Cyanidin-3-Rutinoside, a Natural Polyphenol Antioxidant, ...

Researchers 'look into' plant cells to increase ethanol yields

...the researchers determined that pretreatment opens reactive areas within the cells of the corn stover - another name for postharvest corn remnants, like leaves and stalks - that were previously overlooked. In the next step of processing, these enlarged pores are more easily attacked by enzymes that convert ce...

Scientists discover rare 'gene-for-gene' interaction that helps bacteria kill their host

...ects use an enzyme called phenoloxidase to produce reactive molecules that kill bacteria and then encapsulate them in a dense coat of black pigment called melanin. The researchers found that Photorhabdus produces a special phenoloxidase inhibitor to protect itself against this particular defence. They ide...

NIH awards VBI, Mayo Clinic $2.4M to study chronic rhinosinusitis

...ence give us clues that CRS patients may be overly reactive to Alternaria and that removal of this fungus may cure the disease in a significant number of patients." He added: "The new grant project will explore more precisely which products of Alternaria are the culprits and how we can provide better treatmen...

Researchers create model of cancer-preventing enzyme, study how it works

..., by enabling the creation of superoxide, a highly reactive electron-rich oxygen species. Superoxide is involv...low them to be attached to oxygen to create highly reactive superoxides. Tanner and White said they hope to continue to study proline dehydrogenase and the mo...

No magic tomato? Study breaks link between lycopene and prostate cancer prevention

...Antioxidants protect against free radicals, highly reactive atoms and molecules that can damage DNA and other important molecules in the cell. Since free radical damage increases with age, there has been a long-held suspicion in the scientific community that free radical damage could increase the risk of pros...

A close-up on pancreatic disease: How do we improve the odds?

...d markers of oxidative stress [thiobarbituric acid reactive substances (TBARS), serum superoxide dismutase (s-SOD)] and antioxidant status [ferric reducing ability of plasma (FRAP), vitamins A, C and E, erythrocyte SOD (e-SOD), erythrocyte total glutathione (E-TGSH)]. According to the study results, antiox...

Swabs not reliable for detecting lead dust in homes

...with the reaction between the dye in the swabs and reactive lead in the dust, researchers noted. Yet even when results were interpreted conservatively that is, every swab that did not stay purely yellow was counted as a positive lead result -- the LeadCheck Swabs' probability of correctly identifying dust ...

News tips from the Journal of Neuroscience

...ents arise in part from a glial scar consisting of reactive astrocytes as well as astrocytic release of growth...animals also had more spared myelin and more axons reactive for serotonin or tyrosine hydroxylase. Injury caused a marked upregulation of EGFR in the spinal cor...

Early environmental exposure may accelerate age-related neurodegeneration

...tressan environment in which damage from levels of reactive oxygen is more likelyin dopamine-producing regions of the brain, areas that are affected by PD. Julie Andersen, PhD, and her team at the Buck Institute for Age Research found that feeding iron to newborn mice made them more susceptible to paraquat, w...

Tracing Parkinson's lethal mechanism

...ective enzyme that eliminates potentially damaging reactive oxygen species normally generated in the cells pow... and acts to render harmless the chemically active reactive oxygen species that are produced inside mitochondria in the process of generating energy for the cel...

Invisible gases form most organic haze in urban, rural areas

...rsity of Colorado at Boulder shows that invisible, reactive gases hovering over Earth's surface, not direct emissions of particulates, form the bulk of organic haze in both urban and rural areas around the world. Many science and health professionals have believed sources that spew soot and other tiny part...

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(Date:7/27/2014)... have found that targeting a molecule in blood vessels ... research published in Nature today (Sunday)., The ... University of London, have found that a molecule, called ... itself after chemotherapy or radiotherapy, which kill cancer cells ... blood vessels that grew in melanoma or lung cancer ...
(Date:7/25/2014)... on the land now called California, and many of ... plants they used for food, fuel, tools, and ritual. ... habitat and natural resources. , Frank Lake, an ecologist ... lead a field trip to the Stone ... America,s 99th Annual Meeting, in Sacramento, Cal. this August. ...
(Date:7/25/2014)... published online in the International Journal of Cancer ... preventing cervical cancer based on findings showing successful reduction ... a discrete population of cells in the cervix. ... at squamocolumnar junction cells, or SCJ cells. These cells ... as the origins of cervical cancer. A research team ...
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