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Fibroblast research could lead to alternatives to implanted electronic pacemakers

In guinea pig experiments, Johns Hopkins scientists fused common connective tissue cells taken from lungs with heart muscle cells to create a safe and effective biological pacemaker whose cells can fire on their own and naturally regulate the muscle's rhythmic beat.

5 Dec 2005

Preventing muscle wasting with a leucine-rich diet

Muscle in adults is constantly being built and broken down. As young adults we keep the two processes in balance, but when we age breakdown starts to win. However, adding the amino acid leucine to the diet of old individuals can set things straight again.

5 Dec 2005

LEDGF protein controls the location of HIV integration in human cells

A human DNA-associated protein called LEDGF is the first such molecule found to control the location of HIV integration in human cells, according to researchers at the University of Pennsylvania School of Medicine.

5 Dec 2005

Researchers link microRNA - miR 196 - to limb development

A tiny strand of molecules plays a role in how our arms and legs develop and grow - a finding that sheds light on perplexing bits of material once dismissed as genetic "junk," say scientists at the University of Florida and Harvard University.

5 Dec 2005

Researchers detail mechanism of stroke

In the neural train wreck that is stroke, the cutoff of oxygen kills brain cells through a buildup of acid, as well as by overexciting receptors on the surface of brain cells.

5 Dec 2005

HRAS mutation analysis in Costello Syndrome

Gene mutations in the HRAS sequence are present in most patients affected with Costello syndrome, according to a new study in the American Journal of Medical Genetics. The mutations occurred de novo in patients, meaning, they were not observed in their parents' genes.

5 Dec 2005

CFH Y402H confers similar risk of soft drusen and both forms of advanced AMD

Gene is associated with increased risk of precursor of macular degeneration A variant in a gene called Complement Factor H (CFH) appears to contribute to the increased risk of advanced age-related macular degeneration (AMD) largely or entirely through its impact on the development of a precursor of advanced AMD called soft drusen (small yellowish, extracellular deposits of lipid, protein and cellular debris in the back of the eye), according to a multinational team of researchers.

2 Dec 2005

Disruption of normal gene interaction linked to schizophrenia

Disruption of the normal interaction between the genes PRODH and COMT contributes directly to major symptoms of schizophrenia by upsetting the balance of the brain chemicals glutamate and dopamine, according to a group of investigators that includes a scientist now at St. Jude Children's Research Hospital.

2 Dec 2005

Inhibition of FLT3 signaling targets DCs to ameliorate autoimmune disease

Scientists at the Johns Hopkins Kimmel Cancer Center have found that a gene pathway linked to a deadly form of leukemia may provide a new way to treat autoimmune diseases, including multiple sclerosis.

2 Dec 2005

Herceptin - can healthcare afford this expensive drug?

New research into the cost of using the breast cancer drug Herceptin warns that healthcare authorities and the organisations advising them should not rush to prescribe it for early breast cancer without working out extremely carefully the budget implications and cost-effectiveness of the drug.

2 Dec 2005

Protein target for Parkinson's disease

Researchers at Johns Hopkins' Institute for Cell Engineering (ICE) have discovered a protein that could be the best new target in the fight against Parkinson's disease since the brain-damaging condition was first tied to loss of the brain chemical dopamine.

2 Dec 2005

Cole Porter was wrong - love only lasts a year!

According to scientists, those who say that true love lasts a lifetime have got it completely wrong and in fact it only lasts a year.

2 Dec 2005

Researchers identify a gene affecting blood pressure

Research published by University of Leicester researchers in the top journal "Circulation" identifies a gene that affects blood pressure levels in the general population.

30 Nov 2005

Bacterial DNA and IVF contamination risk on New Scientist

Some children conceived by a common method of IVF could be carrying chunks of bacterial DNA in their chromosomes, according to a study in mice. The researchers who conducted the work say that such accidental genetic modification would be very rare, but they argue that fertility doctors should take more precautions to exclude it.

30 Nov 2005

Difficult decisions ahead over Herceptin breast cancer drug

According to Belgian researchers a drug prescribed for women with advanced breast cancer would be cost-effective for treating some, but not all patients, in the early stages of the disease.

30 Nov 2005

Prion protein codon 129 genotype prevalence is altered in primary progressive aphasia

Most people with a rare type of dementia called primary progressive aphasia (PPA) have a specific combination of prion gene variants, a new study shows.

28 Nov 2005

Breastfeeding may protect children against gluten intolerance

Breastfeeding may protect children against gluten intolerance otherwise known as coeliac disease, suggests research published ahead of print in the Archives of Disease in Childhood.

28 Nov 2005

Exploiting biology's own chemical toolbox...

Exploiting biology's own chemical toolbox, researchers have developed a new technique that will allow them to modify specific sequences within a DNA molecule. The approach will not only help reveal the impact of biochemical alterations to DNA, but could have far-reaching implications for DNA-based medical diagnosis and nanobiotechnology.

28 Nov 2005

Stress can raise a person's lipid levels

There is good evidence to show that stress can increase a person's heart rate, lower the immune system's ability to fight colds and increase certain inflammatory markers but can stress also raise a person's cholesterol?

28 Nov 2005

New method to discover links between cellular machines

Most of what happens in cells is the work of machines that contain dozens of molecules, chiefly proteins. With the completion of human and other genomes, researchers now have a nearly complete "parts list" of such machines; what's lacking now is the manual telling where all the pieces go.

28 Nov 2005