Medical Science News

RSS

Mass spectrometry could aid biodefense in rapidly detecting dangerous pathogens

Scientists have used mass spectrometry for decades to determine the chemical composition of samples but rarely has it been used to identify viruses, and never in complex environmental samples.

10 Apr 2006

Caenorhabditis elegans helps unravel mechanisms of hunger

In research that may have implications for studying eating disorders in humans, a worm the size of a pinhead is helping researchers at UT Southwestern Medical Center unravel the mechanisms of hunger.

6 Apr 2006

MIT look at how cells make life-or-death decisions

The biological processes underlying diseases such as rheumatoid arthritis and cancer are fundamentally linked, and should be linked in how they are treated with drugs, a series of MIT studies indicates.

6 Apr 2006

Genome evolution in gibbons erased fat gene

Scientists from The University of Tokyo have discovered that gibbons, arboreal primates that inhabit the jungles of Southeast Asia, do not carry a major obesity gene that is present in the genomes of all other primates, including humans.

4 Apr 2006

Why males produce sperm and females produce eggs

An Australian research team has solved one of biology's most fundamental questions - why males produce sperm and females produce eggs. The finding is a breakthrough that could lead to improved infertility treatment, cancer therapy and pest management.

4 Apr 2006

Amoebe promote persistence of epidemic strains of MRSA

Scientists in the UK have found that a type of amoeba acts as an incubator for MRSA bacteria. As amoebae are often found in healthcare environments this discovery has implications for the infection control strategies adopted by hospitals.

31 Mar 2006

Minimal genome should be twice the size

The simplest bacteria need almost twice as many genes to survive than scientists first believed, according to new research published in Nature (30 March 2006).

30 Mar 2006

Custom made nanoparticles will transform cancer diagnosis and treatment

Researchers have developed "custom" nanoparticles that promise to provide a more targeted and effective way of delivering anticancer drugs than conventional medications or any of the earlier attempts to fight cancer with nanoparticles.

28 Mar 2006

Omega-3 fatty acid producing pigs

Researchers report they have created pigs that produce omega-3 fatty acids, which are known to improve heart function and help reduce the risks for heart disease, representing the first cloned transgenic livestock in the world that can make the beneficial compound.

27 Mar 2006

Scientists create new molecule that holds promise in fighting disease via gene therapy

Inherited diseases, as well as many cancers and cardiovascular diseases, may eventually be helped by this approach, which delivers therapeutic genes directly to cells. These genes can correct genetic defects, for example, or help the body's immune system fight cancer cells.

23 Mar 2006

Zoologists succeed for the first time in transforming stem cells in freshwater polyps

Stem cells are versatile all-rounders. In the medical field, high hopes are resting on these miracle workers. However, we still understand very little about them.

21 Mar 2006

Scientists develop new research mice to help understand "good" cholesterol

Scientists at Wake Forest University School of Medicine and colleagues have developed new research mice to help them better understand how the body makes and uses "good" cholesterol to protect against heart attacks and strokes.

21 Mar 2006

Natural selection drives extremely rapid evolution in antiviral RNAi genes

There is now new evidence that animals in fact do an impressive job of keeping up in the ongoing evolutionary arms race between viruses and their hosts.

20 Mar 2006

Attractive birds appear to have greater avian virus resistance

A research team at Uppsala University, Sweden has shown in a new study, published in the journal Acta Zoologica, that the size of the spot on a male collared flycatcher's forehead reflects how well the immune defence system combats viruses such as avian influenza.

20 Mar 2006

Scientists exploit novel route to reverse enlarged hearts in obese mice

Working on genetically engineered obese mice with seriously thickened hearts, a condition call cardiac hypertrophy, scientists at Johns Hopkins have used a nerve protection and growth factor on the heart to mimic the activity of the brain hormone leptin, dramatically reducing the size of the heart muscle.

13 Mar 2006

Smk-1 is the first known gene that regulates longevity without disrupting life-sustaining function

Within a hormone-triggered cascade of molecular signals that plays a crucial for a wide range of physiological functions, researchers for the very first time have identified a protein that functions specifically to extend lifespan and youthfulness - without disrupting fertility

13 Mar 2006

A map of recent positive selection in the human genome

By scanning the entire human genome in search of genetic variations that may signal recent evolution, University of Chicago researchers found more than 700 genetic variants that may be targets of recent natural positive selection during the past 10,000 years of human evolution.

9 Mar 2006

Scientists create a mosquito resistant to Type 2 dengue fever virus

Researchers have successfully created a genetically engineered mosquito that shows a high level of resistance against the most prevalent type of dengue fever virus, providing a powerful weapon against a disease that infects 50 million people each year.

9 Mar 2006

Gene regulation determines human-chimp differences

The vast differences between humans and chimpanzees are due more to changes in gene regulation than differences in individual genes themselves

9 Mar 2006

New genome-wide map of miRNA-MRNA interactions

Researchers at New York University's Center for Comparative Functional Genomics and the University of California, Berkeley have used computational analyses to predict a genome-wide map of microRNA (miRNA) targets in the animal model organism, Caenorhabditis elegans (C. elegans).

9 Mar 2006