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Scientists overcome obstacles to stem cell heart repair

Scientists funded by the Biotechnology and Biological Sciences Research Council (BBSRC) at Imperial College London have overcome two significant obstacles on the road to harnessing stem cells to build patches for damaged hearts.

14 Dec 2007

Ingredient found in human semen enhances HIV infection

A plentiful ingredient found in human semen drastically enhances the ability of the human immunodeficiency virus (HIV) to cause infection, according to a report in the December 14, 2007, issue of the journal Cell, a publication of Cell Press.

14 Dec 2007

Same genetic machinery generates skin color evolution in fish and humans

When humans began to migrate out of Africa about 100,000 years ago, their skin color gradually changed to adapt to their new environments.

14 Dec 2007

Researchers report protein interactions of MAP kinase signaling pathway

The Stowers Institute's Rong Li Lab, in collaboration with the Institute's Imaging Center, has achieved a quantitative in vivo measurement of the dynamic protein-protein interactions in the mitogen-activated protein (MAP) kinase cascade signaling pathway, which is critical to growth and differentiation decisions in all eukaryotic cells.

14 Dec 2007

Profound immune system discovery opens door to halting destruction of lupus

A researcher funded by the Lupus Research Institute (LRI) has discovered an entirely new and powerful molecular switch that controls the inflammatory response of the immune system.

14 Dec 2007

Researchers shine the light of venus to learn how the herpes virus invades cells

University of Pennsylvania researchers have uncovered an important step in how herpes simplex virus, HSV-1, uses cooperating proteins found on its outer coat to gain entry into healthy cells and infect them.

14 Dec 2007

New principle for developing vaccines

Infections with a certain type of bacteria (group B streptococcus) can lead to severe, sometimes life-threatening, infections in newborn infants.

14 Dec 2007

New research alters concept of how circadian clock functions

Scientists from the University of Cambridge have identified a molecule that may govern how the circadian clock in plants responds to environmental changes.

14 Dec 2007

Data suggests chromium picolinate may improve cognitive function

Nutrition 21, Inc. has announced the results of a clinical study that showed daily supplementation with 1000 mcg of chromium as chromium picolinate improved cognitive function in older adults experiencing early memory decline.

14 Dec 2007

Molecular 'trip switch' shuts down inflammatory response

Like a circuit breaker that prevents electrical wiring from overheating and bringing down the house, a tiny family of three molecules stops the immune system from mounting an out-of-control, destructive inflammatory response against invading pathogens, researchers at the Salk Institute for Biological Studies have found.

14 Dec 2007

MicroRNA regulates cancer stem cells

One of the biggest stories in cancer research over the past few years has been, unexpectedly, stem cells.

14 Dec 2007

Immune system may target some brain synapses

A baby's brain has a lot of work to do, growing more neurons and connections.

14 Dec 2007

High-dose chemo and stem cell transplant shows little or no survival benefit for breast cancer

High-dose chemotherapy and autologous stem cell transplantation, the controversial, arduous, yet once-popular combination treatment that fell out of favor as a therapy for breast cancer, has proven not to be beneficial as an adjuvant therapy for women with node-positive disease, according to an expansive analysis conducted by researchers at The University of Texas M. D. Anderson Cancer Center.

14 Dec 2007

Green tea for Parkinson's disease

Does the consumption of green tea, widely touted to have beneficial effects on health, also protect brain cells? Authors of a new study being published in the December 15th issue of Biological Psychiatry share new data that indicates this may be the case.

14 Dec 2007

First view of synapse in real time

For the first time, scientists at Weill Cornell Medical College in New York City have observed in real time a cellular mechanism that's crucial to how brain cells communicate.

14 Dec 2007

Blind humans lacking rods and cones retain normal responses to non-visual effects of light

In addition to allowing us to see, the mammalian eye also detects light for a number of "non-visual" phenomena.

14 Dec 2007

Zebrafish study shows key enzyme in gut is a peacemaker

University of Oregon scientists, using zebrafish to study the gastrointestinal tract, say that an enzyme long assumed to be involved in digestion instead is a detoxifying traffic cop, maintaining a friendly rapport between resident gut bacteria and cells.

13 Dec 2007