Neutrophils in Biological News

Placenta-derived stem cells may help sufferers of lung diseases

... noting," says Dr. Parolini," that the presence of neutrophils is associated with poor prognosis for several ... cells might affect infiltration by neutrophils is not known." The researchers speculated that ... in lung diseases. The cells' ability to reduce neutrophils possibly via secreted anti-inflammatory factors ...

Peering inside the skull of a mouse to solve meningitis mystery

... virally infected cells, the T-cells appeared to be summoning monocytes and neutrophils to the site of infection, like a sergeant calling out the cavalry. In this ... Although many questions remain, "we've discovered a totally new targetthe neutrophils and monocytes recruited by the T-cells," Dr. Dustin says. "If you can ...

UIC researchers make promising finding in severe lung disease

... in pharmacology and dermatology and lead author of the paper. neutrophils are the most common type of white blood cells and are critical to what is ... The researchers found that MYLK was essential to the movement of neutrophils through the endothelial barrier. It unleashes a cascade of molecular ...

Bursts of waves drive immune system 'soldiers' toward invaders

... the scientists to watch as wave upon wave of the Hem-1 protein push neutrophils toward a chemical signal made by invading microbes. The researchers ... cells. They also want to learn if the wave action they have discovered in neutrophils also controls movement and shapes changes in other cells and organisms. ...

Stop and smell the flowers -- the scent really can soothe stress

... The scientists exposed lab rats to stressful conditions while inhaling and not inhaling linalool. Linalool returned stress-elevated levels of neutrophils and lymphocytes key parts of the immune system to near-normal levels. Inhaling linalool also reduced the activity of more than 100 genes that go ...

'First aid' for brain cells comes from blood

... the brain and blood. In addition, immune cells, whose task is to recognize and digest foreign bodies or dead cell material e.g. microglial cells or neutrophils are activated more strongly in the absence of Treg. Treg cells protect cells by suppressing the harmful activation of the immune system and can ...

New potential therapeutic target discovered for genetic disorder -- Barth syndrome

... The various symptoms of BTHS, in addition to cardiolipin deficiency, include cardiomyopathy (weakness in heart muscle), neutropenia (a reduction in neutrophils or white blood cells that fight bacterial infections), muscle weakness & fatigue (caused by cellular deficiency), growth delay, and increase of ...

Statins may prevent miscarriages

... C5a, that activates another protein, tissue factor, that is expressed on the surface of certain white blood cells called neutrophils. This spurs the neutrophils into action, they attack the placenta, and the fetus dies. While investigators had unveiled this basic chain of events, they didn't know any further ...

Gamma interferon could aid fight against fungal infections

... gamma interferon, a protein molecule produced by human cells in response to infections, may help to fight fungal infections. Immune cells called neutrophils are rapidly recruited to the site of infection and play an essential role in fungal killing, say Drs. Javier Capilla, Karl Clemons and David Stevens, ...

Anthrax paralyzes immune cells with lethal toxin, UF research shows

... But exactly how the anthrax toxin wards off neutrophils has puzzled scientists for years. Immune cells ... that the toxin prevents actin assembly, leaving neutrophils stuck in the mud. "Actin is important because it's the motor that causes neutrophils to move," said Southwick. "So it's like cutting ...

White blood cells in lung produce histamine seen in allergies

... The study in mice is the first to show that lung neutrophils can produce histamine in significant quantities, ... numbers increased in response to infection, and neutrophils in turn produced histamine. "It's a direct effect ... mycoplasma bacteria on neutrophils. They induce neutrophils to produce the enzyme that produces histamine." ...

UCSD researchers discover internal compass of immune cell

... (UCSD) School of Medicine have discovered how neutrophils ?specialized white blood cells that play key ... the elements of the "internal compass" that neutrophils use to detect and migrate towards ... findings solve the long-standing puzzle of how neutrophils find their way and move toward sites of injury or ...

Anthrax stops body from fighting back, study shows

... and the lead author of the paper. "If your neutrophils work normally, you might be able to shut down ... from volunteers, the researchers studied how neutrophils reacted when exposed to a purified form of ... who worked withSouthwick on the study. "If neutrophils are the first responders and they never get ...

Why do aneurysms form? New studies suggest leading role for white blood cells

... appears to be crucial to AAA formation. neutrophils are the "first responders" of the body's immune ... The two new papers show for the first time that neutrophils are important in the very early stages of AAA ... on mice that had been treated to wipe out their neutrophils temporarily, and in rats that lacked the protein ...

Scientists reveal how disease bacterium survives inside immune system cell

... Minnesota in St. Paul. Scientists analyzed how neutrophils from healthy blood donors respond to Anaplasma ... to understand how it affects blood cells -- and neutrophils in particular. "Few people know about this ... -- billions exist inside each human. Typically, neutrophils ingest and then kill harmful bacteria by ...

Study finds adult stem cells can replicate

... G regulates the ability of immune cells known as neutrophils to secrete chemicals that attract other immune ... of Immunity. Cathepsin G, which is made by the neutrophils it regulates, is also an attractive target ... typically is so well-established that neutrophils are no longer the predominant cell type." ...

Enzyme's newly discovered role may make it target for arthritis treatment

... G regulates the ability of immune cells known as neutrophils to secrete chemicals that attract other immune ... of Immunity. Cathepsin G, which is made by the neutrophils it regulates, is also an attractive target ... typically is so well-established that neutrophils are no longer the predominant cell type." ...

Disabling gene defuses rheumatoid arthritis in mice

... a gene that allows immune cells known as neutrophils to protect themselves from the inflammatory ... of an arthritis-like disorder by making the neutrophils victims of their own damaging secretions. The ... immune system." Innate immune cells such as neutrophils respond rapidly to invaders and normally comprise ...

White Blood Cell 'Waste Disposal' System Plays Critical Regulatory Role

... suggests that the process for disposal of dying neutrophils is actively linked to neutrophil production. A ... numbers of these critical immune cells. Human neutrophils are white blood cells that are constantly being ... search of potentially harmful foreign substances. neutrophils have a short lifespan and often die via a ...

White blood cell waste disposal system plays critical regulatory role

... suggests that the process for disposal of dying neutrophils is actively linked to neutrophil production. A ... numbers of these critical immune cells. Human neutrophils are white blood cells that are constantly being ... search of potentially harmful foreign substances. neutrophils have a short lifespan and often die via a ...

Molecule that destroys bone also protects it, new research shows

... infectious diseases, white blood cells of the innate immune system called neutrophils play a critical role in fighting infections. In fact, humans with ... disease. "It turns out that IL-17 is really important in regulating neutrophils by causing other cells in the vicinity to recruit these infection fighters ...

PNAS study reveals why organs fail following massive trauma

... immune system is actually two systems developed at different points in human evolution. White blood cells of the more primitive innate system, like neutrophils and macrophages, form the first line of defense against disease. They swarm to the injury to engulf and destroy bacteria with toxic molecules and ...

Quitting smoking improves lung function considerably

... to the improved lung function test scores, the "quit" group also showed a reduction in sputum neutrophil counts when compared to those of smokers. neutrophils are white blood cells (phagocytes) that engulf bacterial and fungal infections, along with ingesting foreign debris. "Sputum neutrophil counts ...

Researchers map out networks that determine cell fate

... are the long-lived garbage disposals of the immune system, indiscriminately engulfing and digesting cellular debris and pathogens. The shorter-lived neutrophils are the immune system's vultures, flocking to the site of an infection to target and ingest invading organisms. Although both cell types come ...

Soil-bound prions that cause CWD remain infectious

... ease, thwarting infection. But patients with CGD cannot control attacks by certain bacteria and fungi. The disorder prevents immune cells called neutrophils from functioning properly, and recurrent --and potentially life-threatening-- infections result. The team isolated the new bacterium from the ...

Scientists discover a new disease-causing bacterium in an immune-compromised patient

... ease, thwarting infection. But patients with CGD cannot control attacks by certain bacteria and fungi. The disorder prevents immune cells called neutrophils from functioning properly, and recurrent --and potentially life-threatening-- infections result. The team isolated the new bacterium from the ...

Flesh-eating bacteria escape body's safety net

... cells that play a front line role in human's immune defense against pathogenic microbes. Recent research by European investigators had shown that neutrophils are particularly effective defenders because they release "nets" composed of DNA and toxic compounds to entrap and kill invading bacteria. In the ...

Colorful bacteria more dangerous

... the immune system. Nizet and colleagues now show that these pigmented molecules help S. aureus defuse damaging molecules that are produced by neutrophils in order to kill the bacteria. When the researchers removed the carotenoids from the bacteria, they became more vulnerable to immune attack. Nizet ...

Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine

... bacteria. Although the overwhelming majority of immune cells in the spleen are B cells or T cells, nearly all of the infected cells were macrophages, neutrophils or dendritic cells. These cells make up what immunologists call the "innate" immune system. They are the first to respond to a bacterial invasion. ...