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Tag: "induce" at biology news

Taking a bite out of a fellow worker helps wasps recruit new foragers

...dividuals, who previously hadn't left the nest, to induce them to begin foraging. The rate of being bitten increased by an average of 600 percent for these recruited foragers, while biting rates did not increase for other workers. "The fact that biting was specifically directed at recruited foragers shows...

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

...l lymphocytes due to EPOCH-R therapy, BiovaxID did induce anti-tumor T-cell lymphocyte responses in most patients. Depletion of normal B-cell lymphocytes is a consequence of the combination of chemotherapy and Rituxan, but not of BiovaxID therapy. Thus, "it is justifiable to administer vaccines in the setti...

Fruit fly's beating heart helps identify human heart disease genes

... breakthrough to demonstrate that a human gene can induce disease in a fly. With this novel fruit fly model, we can now screen genes we believe are involved in human heart disease and test them in the fly model." If a candidate human gene leads to the same physiological effects in the fly as it does in hum...

Defective immune system response to smallpox vaccine detailed in new study

...ed more closely at why vaccinia infection fails to induce LL-37 production in atopic dermatitis skin. Comparing immune responses of skin cells grown in the lab from healthy volunteers and from people with atopic dermatitis, the researchers found that the latter skin samples produced excessive amounts of IL-...

NJIT engineer poised to take stem cell research a step forward

...if her method of implanting stem cells is shown to induce bone repair, amputation may not be necessary. Stem cells could also help patients suffering from osteoporosis, whose fractured bones could be regenerated by the cells. Arinzeh has pushed the basic science of stem cells forward and, with her latest ...

Weizmann Institute suggests that immune cells help to maintain cognition and brain cell renewal

...ne" cells) are viewed as a real danger as they can induce autoimmune diseases. Thus, although autoimmune cells are often detected in the healthy individual, their presence there was perceived as an outcome of the body's failure to eliminate them. But Schwartz's group showed that these autoimmune cells have...

Single microRNA causes cancer in transgenic mouse

...genes that keep abnormal cell division in check or induce prolonged survival. Our transgenic mouse model clearly shows that miR155 is an oncogene, because it leads to B cell malignancies when it is dysregulated." Although they now understand that miR 155 overexpression can lead to cancer, the researchers ...

It's in the genes: Study opens door to new treatment of the blues

...rch, our knowledge of the changes that these drugs induce in the brain is rudimentary," Bolanos said. "Though available treatments for depression are generally safe and effective, they are still not ideal. It takes long-term treatment before seeing clinical benefit, and potential side effects are a serious ...

New insight into machinery of immune cells' 'tentacles'

..."actin filaments" could offer targets for drugs to induce the immune system to work more effectively to fight infection; or to damp its stimulation in autoimmune disease. Led by Duke University Medical Center pharmacologist Ann Marie Pendergast, the researchers published their findings in the Jan. 10, 2006...

Scientists make first step towards 'holy grail' of crystallography

...ail' is to find a 'universal nucleant' which would induce crystallisation of any protein. Although there has been considerable research in search of a universal nucleant, this is the first time we have designed one which works on a large number of materials." The researchers plan to commercialise this ...

For the first time: Longevity modulated without disrupting life-sustaining function

...ling in humans in order to prolong life, you would induce diabetes right away," cautioned graduate student and first author Suzanne Wolff. When this pathway had been clipped in worms, they lived longer than normal, but their larval development and reproduction were disrupted. "So, the central question beca...

Legume compounds may help cancer treatment

...hip with soil bacteria known as rhizobia. Rhizobia induce legumes to form tiny new root organs called "root nodules." The bacteria live in the nodules and provide the plant with useable nitrogen it can convert into proteins. CILR Chief Investigator Professor Chris Parish's group, based at ANU's John Curti...

Free-radical busting antioxidants might not promote healthy hearts

...holesterol along with the bad and the potential to induce an irregular heartbeat. Probucol is still available in Canada and Europe. In their new study, Stocker and his colleagues show that the protective effect of probucol has nothing to do with its ability to scavenge oxygen free radicals, as the free rad...

HIV vaccine takes different tack to boosting immune response

...cells in which SOSC1 was switched off were able to induce an effective long-term memory immune response to HIV. "In mice, we were pretty consistent in activating anti-HIV immune responses," said Chen. "In most cases, we found a significant enhancement in both antibody and T-cell response by inhibiting SOCS...

Stable polymer nanotubes may have a biotech future

...s between atoms in one section of the polymers and induce new bonds to form between the two different sections, forming a rigid "cross-linked" membrane. The nanotubes are then snipped free from the parent cell with an "optical scalpel" (highly focused ultraviolet laser pulse). The nanotubes maintain their s...

Protein found to control tumor growth in certain breast cancers

...rogen sensitive breast cancer tumors ?were used to induce tumor growth in severe combined immunodeficiency (SCID) mice. An over-expression of Nod1 in MCF-7 cells resulted in the inhibition of estrogen-dependent tumor growth in the SCID mice and a reduction of estrogen-induced proliferative responses in vit...

Radiotherapy advance points way to noninvasive brain cancer treatment

...t have a very short range of action. Therefore, to induce DNA damage that the cancer cells cannot repair, and consequently cell death, gadolinium atoms must be localized in the nuclei of cancer cells." De Stasio adds that, for the treatment to be effective, gadolinium must be absent from normal cells and b...

First link of oral bacteria and preterm birth found in human

...nfections that bring on early labor or the need to induce labor to protect the baby from an infection during the pregnancy. Women can contract intrauterine infections vaginally while pregnant. Another pathway of infection has been suspected through the mouth in pregnant mothers where the oral bacteria e...

Prenatal nicotine exposure reduces breathing response of newborns...

...nfections that bring on early labor or the need to induce labor to protect the baby from an infection during the pregnancy. Women can contract intrauterine infections vaginally while pregnant. Another pathway of infection has been suspected through the mouth in pregnant mothers where the oral bacteria e...

First direct mechanical communication of mitochondria, cardiomyocyte nucleus shown

... "for the first time that mitochondria are able to induce nuclear deformation, suggesting that mitochondria ... to the conclusion that: "mitochondria are able to induce nuclear deformation, suggesting that mitochondria may mechanically regulate nuclear function." Nex...

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