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Tag: "destroy" at biology news

UC Davis study finds HIV hiding from drugs in gut, preventing immune recovery

...us that causes AIDS, is able to survive efforts to destroy it by hiding out in the mucosal tissues of the intestine. They also found that HIV continues to replicate in the gut mucosa, suppressing immune function in patients being treated with antiretroviral therapy--even when blood samples from the same indi...

Scientists find Antarctic ozone hole to recover later than expected

...ratosphere, an upper layer of the atmosphere, that destroy ozone in an annually recurring process that takes place in the unique meteorological conditions of the Antarctic stratosphere. Those gases come from human-produced chemicals such as chlorofluorocarbons. "The Antarctic ozone hole is the poster child...

Marrow-derived stem cells deliver new cytokine to kill brain tumor cells, offer protection

... that regulate immune responses ?to track down and destroy glioma cells. In 2002, the scientists reported that they had produced central nervous system cells from stem cells derived from bone marrow. Because these stem cells originate in the bone marrow instead of the brain or fetal or embryonic tissue, the...

Nanopore method could revolutionize genome sequencing

... of the fluctuations so they aren't so great as to destroy the distinguishability of the bases." The researchers caution that there are still hurdles to overcome because no one has yet made a nanopore with the required configuration of electrodes, but they think it is only a matter of time before someone ...

Inside rocks, implications for finding life on Mars

... as organic cell walls. These techniques would not destroy the rocks. "It's astounding to see an organically preserved, microscopic fossil inside a rock and see these microscopic fossils in three dimensions," said Schopf, who is also a geologist, microbiologist and organic geochemist. "It's very difficult t...

A step forward in the fight against bacterial infections

...are resistant to LPS, but they still recognize and destroy pathogens. The limited quantity of type 1 interferons enables the mice to cope with a lethal shock resulting from inflammation, but this small quantity also ensures that immunity is preserved. A next step in combating bacterial infections is to uncov...

Possible brain hormone may unlock mystery of hibernation

...e." In cryosurgery, physicians use extreme cold to destroy abnormal tissue, such as cancerous tumors. ...

Newly discovered killer cell fights cancer

...ne day be a target for therapies that seek out and destroy cancer. "In the same way that intelligence and law enforcement agencies can face deadly threats together instead of separately, this one cell combines the ability to kill foreign pathogens and distribute information about that experience," says Drew...

AIDS drug from sunflowers

...' can, if the weather conditions are unfavourable, destroy an entire sunflower crop. However, some sunflowers survive the fungus attack more or less unscathed. They do this by producing specific antibodies which eventually put a stop to the fungus. The agricultural engineer Claudio Cerboncini wanted to find...

MIT research holds promise for Huntington's treatment

...eins. In Parkinson's disease, the mutant proteins destroy dopamine-producing cells in the substantia nigra. Normally, the dopamine transmits signals to the corpus striatum, allowing muscles to make smooth, controlled movements. When those dopamine-producing cells die, Parkinson's patients exhibit the tremor...

Study shows that cells have a natural defense against HIV

...ns that normally help repair cellular DNA can also destroy the DNA made by HIV after it enters a human cell. ...earchers are now working to learn how the proteins destroy the HIV cDNA. These studies could lead to drugs that might help the proteins destroy more HIV cDNA a...

Scientists discover that widely available drug also helps fight kidney disease

...he formation of thousands of cysts that eventually destroy the kidney. Fortunately, a highly effective inhibitor of mTOR is well known. This drug, rapamycin, was originally discovered in the 1970s in soil from Easter Island. It is used for immunosuppression in kidney transplant patients to prevent rejection...

UW-Madison engineers squeeze secrets from proteins

...ts to the system, like urea for example, that just destroy the folded structure of the protein. How resilient the protein is to these assaults is what we often call stability," de Pablo says. "Detergents like the ones you use to wash your clothes have enzymes that break the fat in stains. When you put you cl...

Commonly used antidepressants may also affect human immune system

...ulation, triggering an immune response designed to destroy the invader. This process may take hours. What the Georgetown researchers found, however, is that dendritic cells -- the most powerful of the antigen-presenting cells and the ones that can find invaders that have never infected the body and "educate...

GlycoFi announces the first production of antibodies with human glycosylation in yeast

... that bind the constant domain of the antibody and destroy the cancer cell to which the antibody is bound. Research has shown that this process, known as antibody dependent cell cytotoxicity (ADCC), is sensitive to the composition of sugars (or "glycans") in the antibody's constant region. Moreover, in the a...

BiovaxID?yields 89 percent survival in patients with aggressive non-Hodgkins

...cine, stimulates the immune system to seek out and destroy tumor cells. The data were published in a recent edition of Nature Medicine (Nat Med.2005; 11(9):986-91). In this single-arm, open-label Phase 2 clinical study, patients with untreated mantle cell non-Hodgkin's lymphoma (NHL) were administered six...

Researchers reverse juvenile diabetes in animal model

...ocks the T cells as they travel to the pancreas to destroy beta cells. "We did this in mice, giving them six injections over the course of several weeks. The injections interrupted the T cell and beta cell interaction, allowing the beta cells in the pancreas to regenerate. This enabled the pancreas of the ...

Embryos tell story of Earth's earliest animals

...ons. If the cell's own degradation processes don't destroy it, nearby bacteria will. The embryos must die in the presence of a so-called "reducing" substance, such as hydrogen sulfide. Such reducing substances slow or stop the internal degradation processes that occur very soon after cells die and also inhib...

HIV accessory protein disables host immunity via receptor-protein intermediary

...RNA used to silence gene expression, to completely destroy expression of the glucocorticoid receptor protein. When the researchers kept the glucocorticoid receptor protein from being made, Vpr did not kill host cells. "This indicated that glucocorticoid receptor function is not what's really necessary for ...

'Good' bacteria could save patients from infection infection by deadlier ones

...ts. This is so because these "preventive" measures destroy beneficial bacteria, while at the same time the more "nasty" bacteria are often able to survive by adapting themselves to the pharmacological means used against them. Since different strains of bacteria do not generally occupy the same surfaces, it...

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