Immune System News and Research

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Largest analysis of differences between human and chimpanzee genomes

Researchers have carried out the largest study of differences between human and chimpanzee genomes, identifying regions that have been duplicated or lost during evolution of the two lineages.

6 Nov 2008

Anti-brain tumor agent derived from herpes virus passes next hurdle

An anti-brain tumor agent developed from a genetically engineered herpes simplex virus has been shown to be safe when given in two doses and injected directly into the brain of patients with malignant glioma.

6 Nov 2008

10 symptoms that should never be ignored

Not every ache and pain merits a quick trip to the doctor -- but some do.

6 Nov 2008

Scientists show how body regulates mature B-cells levels

Researchers at the University of Pennsylvania School of Medicine can now explain how the body determines whether there are enough mature B-cells in the blood stream at any one time.

5 Nov 2008

Lung airway cells activate vitamin D and increase immune response

Vitamin D is essential to good health but needs to be activated to function properly in the human body.

5 Nov 2008

'Natural killer' immune cells reveal factors for reproductive success

Immune cells known as natural killer (NK) cells are linked with pregnancy problems including pre-eclampsia and recurrent miscarriage. Collaborative research between scientists at the Babraham Institute and Centre for Trophoblast Research in Cambridge is illuminating the role that pregnancy-related NK cells play in moderating the biochemical interactions at the boundary between maternal tissues and the developing foetus.

4 Nov 2008

New findings on STEP HIV vaccine trial

The study is the result of the collaboration between scientists at the Institut de Genetique Moleculaire de Montpellier, Universite Montpellier I & II, Montpellier, France, the Centre Hospitalier Universitaire Vaudois (CHUV) and at the Swiss Vaccine Research Institute, University of Lausanne, Lausanne, Switzerland.

4 Nov 2008

Scientists step closer to finding a defense against superbugs

A discovery from the Oklahoma Medical Research Foundation has put scientists are one step closer to finding a defense against dangerous antibiotic-resistant bacteria, sometimes called "superbugs."

4 Nov 2008

Rare immune cell may help those with Crohn's and colitis

The tonsils and lymphoid tissues in the intestinal tract that help protect the body from external pathogens are the home base of a rare immune cell newly identified by researchers at Washington University School of Medicine in St. Louis.

4 Nov 2008

Parasites that live inside cells use loophole to thwart immune system

St. Jude Children's Research Hospital scientists have discovered a mechanism by which intracellular pathogens can shut down one of the body's key chemical weapons against them: nitric oxide.

4 Nov 2008

Novel leukemia therapy shows promise for high-risk patients

Researchers at the Moores Cancer Center at the University of California, San Diego (UCSD) are conducting clinical trials of a novel therapy aimed at revving up the immune system to combat a particularly difficult-to-treat form of leukemia.

4 Nov 2008

Study shows how HIV-1 vaccine trial could have enhanced HIV infection

In September 2007, a phase II HIV-1 vaccine trial was abruptly halted when researchers found that the vaccine may have promoted, rather than prevented, HIV infection.

4 Nov 2008

Parasites that live inside cells use loophole to thwart immune system

St. Jude Children's Research Hospital scientists have discovered a mechanism by which intracellular pathogens can shut down one of the body's key chemical weapons against them: nitric oxide. The researchers found that the microbes block nitric oxide production by subverting the biochemical machinery used by immune cells called macrophages to produce the chemical.

3 Nov 2008

Researchers develop DNA vaccine for West Nile virus

Researchers are developing a DNA-based vaccine against the dreaded West Nile virus (WNV), which can be transmitted from animals to humans. The unique feature of this vaccine is that it is also effective after onset of the disease, for it has therapeutic properties.

3 Nov 2008

Persistent bacterial infection exploits killing machinery of immune cells

A new study reveals an important and newly discovered pathway used by disease-causing bacteria to evade the host immune system and survive and grow within the very cells meant to destroy them. This discovery may lead to new treatments and vaccines for tuberculosis (TB) and certain other chronic bacterial and parasitic infections.

3 Nov 2008

Two pronged approach to melanomas shows promise

An international team of researchers have developed a new substance which uses a two pronged attack on malignant cells.

3 Nov 2008

Discovery of new pathway used by disease-causing bacteria to evade host immune system and survive

2 Nov 2008

Double-barreled immune cell approach for neuroblastoma

Adding an artificial tumor-specific receptor to immune system cells called T-lymphocytes that target a particular virus extended and improved the cells' ability to fight a form of childhood cancer called neuroblastoma, said researchers form Baylor College of Medicine and Texas Children's Hospital in a report that appears online in the journal Nature Medicine.

2 Nov 2008

Substance tackles skin cancer with two-pronged attack

By playing it safe and using a two-pronged attack, a novel designer molecule fights malignant melanoma. It was created and tested by an international team of researchers led by the University of Bonn.

2 Nov 2008

Bacteria can directly cause human blood and plasma to clot

Bacteria can directly cause human blood and plasma to clot - a process that was previously thought to have been lost during the course of vertebrate evolution, according to new research at the University of Chicago, National Institute of Allergy and Infectious Diseases, and Institut Pasteur in Paris. Their findings will be published online Nov. 2 in Nature Chemical Biology.

2 Nov 2008