Tag: "activation" at biology news

Nanotechnology highlights from the ACS national meeting in Anaheim, Calif., March 28-April 1

...aceutical residues. But its use is limited because activation requires ultraviolet light from an artificial source, which is generally inefficient. Now, researchers at Clemson University have figured out a way to coat nanoparticles of silver with titanium dioxide so that the resulting photocatalysts have the ab...

Tadpoles and tumors

...l have known that a protein called FAP (fibroblast activation protein) is involved in tail resorption. However, FAP may have a much more perverse role in humans. "We know that FAP helps control the breakdown of the extracellular matrix that allows tadpole tail resorption, and we believe that the same type of...

JCI table of contents, 15 March 2004

... Center, analyze the specific parameters of T-cell activation that may be harmful or helpful in fighting HIV inf...clear evidence for an important role in the immune activation level directly affects the initial peak of virus in the blood stream. They further show that the st...

The catch 22 of immune response to AIDs viral infection

... Center, analyze the specific parameters of T-cell activation that may be harmful or helpful in fighting HIV inf...clear evidence for an important role in the immune activation level directly affects the initial peak of virus in the blood stream. They further show that the st...

Scientist works to interrupt early changes resulting in diabetic vision loss

...uro-protective functions including inhibiting NMDA activation that sets up this deadly cascade," Dr. Smith says. "So we are testing these sigma receptor ligands to prevent this neuronal death. It may be a little ambitious, but that is what we are doing. If we can get strong evidence that these drugs have a bene...

Migraine mouse provides insight into neurobiology of devastating headaches

... Compared to normal mice, the migraine mice showed activation of calcium channels by weaker stimuli with consequ...fy a concrete link between FHM mutations, CSD, and activation of pain in the brain. According to coauthor Dr. Daniela Pietrobon, "Other studies have implicated CS...

Viral immunosuppression: Not just a game of hide and go seek

...ne responses by targeting both the development and activation of DCs. Ironically, the release of type I interferon in response to LCMV infection, which normally contributes to the immune response, actually helped block DC development. This new mechanism provides us with a new perspective regarding therapeutic ...

JCI table of contents, March 1 2004

...ne responses by targeting both the development and activation of DCs. Ironically, the release of type I interfer...rom Stanford University report that the number and activation state of intratumoral DCs are critical factors in the host immune response to tumors. They also desc...

U Iowa study identifies damaging mechanism in transplants and heart attacks

...d author of the study, Chenguang Fan, compared the activation of NF-kB in response to bacterial infection and is... now selectively remove, like a molecular surgeon, activation of one or both of these pathways using gene therapy approaches," Engelhardt said. "We found that sel...

UW study: Baby's face lights up emotional center of new mom's brain

...s for doing something well - both of which involve activation of the orbitofrontal cortex. This puts you in a better mood and leads to brain changes that correspond to feeling happier."...

Current smoke alarms pass life-saving tests

...ing record of saving lives and property, the later activation times imply that residential sprinkler installations should always include smoke alarms (as currently required in National Fire Protection Association Standards 13D and 13R) to provide greater escape time for those capable of escaping." To further in...

Adolescent brains show reduced reward anticipation

...l midbrain, with the magnitude of ventral striatum activation sensitive to gain amount. In adolescents, however, the researchers found lower activation of the right ventral striatum centered in the nucleus accumbens, a region at the base of the brain s...

New study seeks to establish mechanism between areas of the brain and continence

...n could be done on magnitude of volume of cortical activation or its maximum percent fMRI signal change in activ...) using a Fischer exact test revealed that insular activation was significantly more prevalent among female subjects compared with male subjects. Insular activity...

UNC study may improve gene therapy safety

...denovirus vector was much broader and included the activation of immune and stress response genes. Lung cells exposed to empty adenovirus capsid showed a decrease in changes in cellular gene expression, although some were related to stress response genes. This study provides a systematic explanation for the rel...

HIV exhausts the immune system through chronic non-specific activation

...Barr virus and cytomegalovirus, showed significant activation levels during HIV acute infection. And as HIV/AIDS progresses, many of the CD8 T-cells developed to a state of senescence where they are no longer active. These results show that chronic and nonspecific overactivation of the immune system during HIV...

JCI table of contents, 16 February 2004

...cts through induction of COX-2 gene expression and activation of prostacyclin receptor-signaling pathways. Activ...ects of HDL and APOE mediated by Cox-2dependent IP activation AUTHOR CONTACT: Richard Assoian University of Pennsylvania School of Medicine, Philadelphia, Pennsy...

Disease-fighters in our mouths provide clues to enhancing the immune system

...g and harmless, or commensal, bacteria trigger the activation of beta-defensins through different chemical signaling pathways. The role of commensal bacteria may be to alert the immune system to the possible presence of invading bacteria, according to Dale. The mouth is "a perfect place to study the innate immu...

Advances in equine cloning may aid insight into human diseases

...ls. The mule cloning demonstrated that equine cell activation and division rates can be accelerated by exposure to calcium, "suggesting the use of equines as valuable animal models to study human disease," said Woods. He reported that all three mule foals are healthy and vigorous and are growing and behaving n...

Study of dyslexic brain finds three word forms responsible for reading success

... dyslexics' brains a 'jump start' that resulted in activation of the same brain areas used by normal readers" said Elizabeth Aylward, Professor of Radiology at the University of Washington. Using MRI technology, Aylward and her colleague Virginia Berninger, Professor of Educational Psychology at the University ...

New study suggests brains of autistic children can be trained to recognize faces

...cience. "These results suggest that lack of normal activation of the fusiform gyrus in persons with autism may b...ormation from the face. The current study compared activation of the fusiform gyrus (the face area) and inferior temporal gyrus (a part of the brain that recogniz...

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