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Scientists discover new mode of action for enzymes immersed in cellular membranes

Johns Hopkins scientists have discovered a new mode of action for enzymes immersed in cellular membranes. Their experiments suggest that instead of recognizing and clipping proteins based on sequences of amino acids, these proteases' location within membranes gives them the unique ability to recognize and cut proteins with unstable structures.

17 Nov 2012

New insights into how MSCs ‘traffic’ from the circulation into tissues

Mesenchymal stem cells (MSCs), are a newly emerging cellular therapy being tested in approximately 250 clinical trials worldwide to help repair damaged tissues, such as injured heart muscle following a heart attack. The problem is that when culture-expanded MSCs are injected into the circulation, they have trouble gaining access to the inflamed tissues-exactly where their help is needed.

16 Nov 2012

Metalloacid surfaces may be answer to hospital-acquired infections

Coating surfaces in metalloacids may help control the spread of hospital-acquired infections, suggest study findings.

14 Nov 2012

Scientists discover how external signals regulate vascular remodelling at cell level

Blood vessels are extremely dynamic: depending on the external conditions, they can adapt their permeability for nutrients, their contractility, and even their shape. Unlike cardiac muscle cells, for example, the smooth muscle cells in blood vessels demonstrate a high degree of plasticity, so they can specialise or multiply as required, even repairing damage to the vessel wall.

13 Nov 2012

CHOP presents new findings on pediatric cardiovascular disease at AHA 2012

Physician-researchers from the Cardiac Center at The Children's Hospital of Philadelphia presented new findings on pediatric cardiovascular disease at the American Heart Association's Scientific Sessions 2012 in Los Angeles.

9 Nov 2012

Researchers develop new kind of intracranial pressure sensor

An increase in cerebral pressure may cause dementia and could destroy the brain. Companies have been seeking to find monitoring sensors that can be implanted into the brain, and read from outside the body. A tiny sensor may provide the help needed.

7 Nov 2012

Researchers show how bacteria control processes in human cells

Bacteria can talk to each other via molecules they themselves produce. The phenomenon is called quorum sensing, and is important when an infection propagates. Now, researchers at Link-ping University in Sweden are showing how bacteria control processes in human cells the same way.

6 Nov 2012

Geldanamycin degrades VEGFR2 protein that triggers blood vessel growth

The drug, geldanamycin, is well known for attacking a protein associated with the spread of breast cancer. However, a laboratory-based study found it also degraded a different protein that triggers blood vessel growth.

6 Nov 2012

Genetic polymorphisms linked with community-acquired pneumonia

Seven genetic polymorphisms have been shown to be associated with community-acquired pneumonia, research shows.

5 Nov 2012

MiMedx third quarter revenue increases 270% to $8.0 million

MiMedx Group, Inc., an integrated developer, manufacturer and marketer of patent protected regenerative biomaterials and bioimplants processed from human amniotic membrane, announced today its results for the quarter ended September 30, 2012.

30 Oct 2012

New HIV test for babies differs from conventional test, delivers diagnosis in less than an hour

Today, mothers in Africa sometimes walk more than 10 miles to a clinic only to learn that conventional HIV test results for their babies are not available yet.

29 Oct 2012

Study identifies essential mechanism that regulates calcium flow into mitochondria

Most healthy cells rely on a complicated process to produce the fuel ATP. Knowing how ATP is produced by the cell's energy storehouse - the mitochondria -- is important for understanding a cell's normal state, as well as what happens when things go wrong, for example in cancer, cardiovascular disease, neurodegeneration, and many rare disorders of the mitochondria.

26 Oct 2012

Artificial CSP proteins reduce S. pneumoniae competence y more than 90%

The bacterium Streptococcus pneumoniae - which can cause pneumonia, meningitis, bacteremia and sepsis - likes to share its antibiotic-defeating weaponry with its neighbors. Individual cells can pass resistance genes to one another through a process called horizontal gene transfer, or by "transformation," the uptake of DNA from the environment.

26 Oct 2012

New study finds bacteria cue single-celled choanoflagellates to form colonies

Bacteria have a bad rap as agents of disease, but scientists are increasingly discovering their many benefits, such as maintaining a healthy gut.

25 Oct 2012

Scientists create new compounds that could slow progression of Parkinson's

In an early-stage breakthrough, a team of Northwestern University scientists has developed a new family of compounds that could slow the progression of Parkinson's disease.

25 Oct 2012

Study to examine possible link between mitochondrial DNA and ovarian cancer

Ovarian cancer is a deadly disease. With no overt symptoms and no screening tests to catch it early, ovarian cancer is often detected at stage 3 or later. By then, it can be very aggressive and may have spread beyond the ovaries into other organs. Many women eventually succumb to it; the five-year survival rate for a stage 3 ovarian cancer diagnosis is only 34 percent.

24 Oct 2012

KIF3A protein ferries HIV to the plasma membrane

A study in The Journal of Cell Biology identifies a motor protein that ferries HIV to the plasma membrane, helping the virus escape from macrophages.

23 Oct 2012

GORE Septal Occluder receives FDA approval for use in REDUCE clinical study

W. L. Gore & Associates today announced that the FDA has approved the use of the new GORE Septal Occluder for inclusion in the Gore REDUCE Clinical Study. Gore is introducing this latest technology in its Gore REDUCE Clinical Study for prevention of recurrent stroke in patent foramen ovale (PFO) patients.

22 Oct 2012

Insight into calcium pumps in cells

When animals and plants are exposed to influences such as bacterial attack, odour and cold, calcium ions flow into the cells. The calcium provides the cells with a signal about what is going on outside, but as high concentrations of calcium are toxic to the cells, it must be quickly pumped out again.

22 Oct 2012

Research team identifies turbo switch in the vital calcium pump in our body's cells

A Danish-British research team has discovered a turbo switch in the vital calcium pump in our body's cells. In studies at the X-ray source DORIS at Deutsches Elektronen-Synchrotorn DESY in Hamburg and the European Synchrotron Radiation Facility ESRF in Grenoble the team discovered that the on-off switch of the pump has a previously unknown third position, which switches the pump into a turbo gear.

22 Oct 2012