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Tag: "immunity" at biology news

In mice, drug protects against diabetes and atherosclerosis

...protective effects in mice, conferring substantial immunity to diabetes, heart disease, and other metabolic problems. This immunity takes place even if the animals are severely obese or have high amounts of cholesterol and consume d...

How 'memory' T cells curb the spread of viruses throughout the body

...s and mumps occurred only once in a lifetime. The immunity occurs when the immune system produces cells called lymphocytes that specifically attack and eliminate the virus at the time of infection. After the infection subsides, most of the lymphocytes die but some remain in the body as “memory lymphocytes” a...

Revealed -- Mosquito genes that could be controlling the spread of killer viruses

...tudent Robert Waterhouse, focused on comparing the immunity genes of the Aedes mosquito with similar groups of genes in the harmless fruit fly and the Anopheles mosquito that transmits malaria. When comparing the two different mosquitoes, the scientists found some similarities in the genes controlling their r...

Ancient retrovirus sheds light on modern pandemic

...e found that during primate evolution, this innate immunity to one virus may have made us more vulnerable to HIV." Evidence of human immunity to this ancient retrovirus first emerged with the sequencing of the chimpanzee genome. "When the chi...

New vaccine prevents CMV infection and disease in mice

...th compromised immune systems. The body’s natural immunity doesn’t protect against infection by the virus, estimated to be present in 50 to 75 percent of all adults. “Until now, scientists haven’t been able to develop a vaccine to protect against CMV,” said Deborah H. Spector, Ph.D., UCSD Professor of C...

Avian influenza survivors' antibodies effective at neutralising H5N1 strain

...ers found that the antibodies provided significant immunity to mice that were subsequently infected with the Vietnam strain of H5N1. This reduced significantly the amount of virus found in the lungs and almost completely prevented the virus reaching the brain or spleen. In those people in Vietnam who died fro...

US control strategies may make flu epidemics worse, UCLA study shows

...nstruct their model. With seasonal flu, protective immunity ?a flu shot ?lasts only one year. Thus, individuals must decide each year whether or not to participate in a vaccination program. The model Blower's team developed is inspired by game theory, used in economics to predict how non-communicating, se...

Keeping the immune system from starting a 'food fight'

... food enters the system, STAMP2 normally keeps the immunity response "button" from getting pushed, Hotamisligil said. "We suggest that, over time, the accumulation of small cellular stresses due to daily changes and fluctuations in nutrients in STAMP2-deficient mice may lead to the activation of inflammato...

Corals -- More complex than you?

...amazed at how many of the genes involved in innate immunity in man are present in coral ?and just how similar they are." The significance of this may lie in the fact that scientists now suspect coral is facing a number of pandemics: ‘black band? ‘white plague? ‘white pox?‘white syndrome?and ‘white band?are...

LIAI scientists make important finding on cytomegalovirus transmission

...persistence, and two ways in which we can modulate immunity in vivo with the desired result of blocking virus spread to uninfected individuals. "The potential excitement in the findings is that we may be able to one day use this kind of treatment in humans to block or significantly reduce the spread of cyt...

The quest for an effective HIV vaccine presents new possibilities, challenges

...uman studies have confirmed how important cellular immunity is in the early and later stages of HIV infection, even though the virus is never completely eliminated. Vaccines that induce strong cellular immune responses may have some benefits, say the authors. In non-human primate models of HIV infection, T-ce...

Biodegradable microspheres deliver time release vaccines, stimulate different immune response

...type of immune response known as cellular-mediated immunity (CMI). CMI allows the immune system to identify, target and kill cells that have already become infected, something antibodies can not do. The determine the cause of this effect, Wilson-Welder and her colleagues next incubated human dendritic cel...

Corals that can fight global warming may one day help fragile reefs

...s: massive loss of critical symbionts, compromised immunity and ability to fight pathogens, and increased susc... there seems to be future promise for boosting the immunity of coral reefs, Harvell reported. Collaborators Rotem Effrony and Eugene Rosenberg in Tel Aviv, Isra...

Jefferson scientists find rabies-based vaccine could be effective against HIV

... and his colleagues aren’t sure how long the viral immunity will last. According to Dr. Schnell, the study demonstrated a "proof of principle" ?that is, that the method used is technically possible. He says that the results indicate the need for future studies in larger groups of animals, and that these cu...

Scripps research study shows humans and plants share common regulatory pathway

...ure that exists describing the R protein dependent immunity in plants to better understand human NLR pathways, especially those dependent on Nod1. ...

New details on how the immune system recognizes influenza

...c flu viruses or vaccines are a major component of immunity that protects against these viruses. Strains o... epitopes are conserved between virus strains, the immunity a person has developed towards one strain might provide at least some protection against the other s...

LIAI completes world's most comprehensive analysis on influenza virus data

...munity will pursue data directly relevant to human immunity to influenza virus to close those critical gaps." Regarding the dreaded H5N1 avian flu specifically, the information showed some important H5N1 epitopes currently being investigated. However, the number represented only a few of the 600 influenz...

Africa's first large-scale HIV vaccine study launches

...the vaccine works in populations with pre-existing immunity to the viral vector used in the vaccine, according to Corey, who is also head of the Infectious Diseases Program and Virology Division at the University of Washington School of Medicine. "South Africa is an excellent location for this trial due t...

In-shell vaccine for chick disease

...re-hatching prototype vaccine virus which provides immunity to IBV has been developed by scientists at the Ins..., explained, "This hybrid virus was able to induce immunity when inoculated before hatching. When hatched chicks were exposed to the virulent M41 strain, we obs...

What recognizes what in plant disease resistance?

...in, which is structurally similar to animal innate immunity molecules. These findings provide novel insights into how R proteins recognize pathogen Avr proteins and should help in long-term efforts to enhance crop yield. ...

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