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Humans more prone to cancer than chimpanzees

Chimpanzees and humans share a common ancestor, and even today 99 percent of the two species' DNA is identical. But since the paths of man and chimp diverged 5 million years ago, that one percent of genetic difference appears to have changed humans in an unexpected way: It could have made people more prone to cancer.

15 May 2005

Vitamin A's paradoxical role in influencing symmetry during embryonic development revealed

In this week's journal Nature, scientists at the Salk Institute for Biological Studies report that they have solved one of the "holy grail" puzzles of developmental biology: the existence of a mechanism that insures that the exterior of our bodies is symmetrical while inner organs are arranged asymmetrically.

11 May 2005

Virus that targets and kills glioblastoma

Yale School of Medicine scientists have identified a virus that targets and kills glioblastoma, a deadly type of human brain tumor resistant to current medical or surgical treatment, according to a study published as the cover article in the Journal of Virology.

11 May 2005

Laboratory model of immune system overcomes ethical constraints on studies of hematopoietic stem cells in humans

Scientists at St. Jude Children’s Research Hospital have joined with colleagues at several other institutions to develop a laboratory model of the human immune system. This model will allow scientists to study ways for improving the results of hematopoietic stem cell (HSC) transplantation without putting patients at risk.

10 May 2005

Smell may play a big role in selecting your potential mate

Your nose, whether big or small, male or female, heterosexual or homosexual, may play a big role in selecting your potential mate. According to scientists at the Monell Chemical Senses Center in Philadelphia, one person's preference for another person's body odor depends in part upon the gender and sexual orientation of both sender and receiver.

9 May 2005

GM mice live longer and give hope for anti-aging treatments

U.S. scientists have produced genetically modified mice that live 20 per cent longer than normal and may have possibly discovered an approach to extending the human lifespan.

8 May 2005

Mosaic Analysis with Double Markers (MADM) - A powerful new tool to study diseases and genetics

A powerful laboratory technique used by fruit fly geneticists for more than a decade is now available to scientists studying genes and diseases in mice.

5 May 2005

Scientists extend the lifespan of mice

Scientists at the University of Washington and their colleagues at other research centers have found a way to significantly extend the lifespan of mice while reducing the impact of the aging process. Their study, which will be published online by the journal Science on May 5, lends more credence to the free-radical theory of aging.

5 May 2005

Neutrophils dictate whether our immune system will permit or prevent bacterial infections

New research on a bacterium that can survive encounters with specific immune system cells has strengthened scientists' belief that these plentiful white blood cells, known as neutrophils, dictate whether our immune system will permit or prevent bacterial infections.

5 May 2005

Cancer hijacks normal wound-healing processes

Scientists have known for the last decade that a link exists between wound healing and cancer. For instance, in a 1994 experiment at the Lawrence Berkeley National Laboratory, chickens infected with a cancer virus developed tumors in areas of their body that had undergone wounding or scarring, while no tumors developed in infected areas that had not suffered wounding.

5 May 2005

New discovery could improve IVF results

Scientists in the U.S. think they may have solved the puzzle of why some embryos fail to implant in their mother's womb, which is one of the main causes of IVF failures.

4 May 2005

The humble snail is helping scientists explore ways of treating memory loss in humans

Drug manufacturers are looking at ways to create a "Viagra for the brain", which could alleviate memory loss, one of the distressing symptoms of diseases such as Alzheimer's. Work carried out by Dr George Kemenes, Senior Fellow in the Department of Biology and Environmental Science at the University of Sussex, will hopefully help to show how such drugs could work.

4 May 2005

Faulty folding of protein in the environment may cause disease

Serious diseases like Alzheimer's and type-2 diabetes have been shown to be related to unhealthy protein chains that occur when proteins fold incorrectly. In an article in the scientific journal Proceedings of the National Academy of Science, PNAS, a research team directed from Uppsala University shows that similar protein chains in our environment may hasten the process.

4 May 2005

Two-photon imaging gives real-time video of cells in living tissue

Biologists have a new tool to track and videotape cells moving about inside living tissue.

3 May 2005

Scientists use tobacco plants to create antibodies against tumor cells

Scientists at Jefferson Medical College are using tobacco plants to produce monoclonal antibodies – tiny guided protein missiles – that can target and hunt down cancer cells. The plants promise to provide a cheaper, faster method of producing anticancer antibodies, raising hopes that the technology can one day be used in humans.

3 May 2005

Mother of all treatments could cure baldness, and banish stretch marks!

A new discovery by scientists might just be the 'mother of all treatments' in promising a treatment for balding men, women with stretchmarks and anyone who has gum disease.

3 May 2005

Fusing physics with medicine to fight cancer

Everyone’s lives are touched by cancer - it is a disease that affects 1 in 3 of us throughout our lifetime. Future developments that lead to earlier diagnosis and more effective therapy lie in further successful collaboration between high energy physicists and the healthcare industry.

2 May 2005

Abnormal cell division explained

Why do some cancer cells divide not into two, as cells are supposed to do in mitosis, but into three-four new cells that look thoroughly abnormal? This question was raised as early as the 1890s by the German tumor researcher David Hansemann, who could observe the strange mitosis even using the microscopes of his day. Now another David, Lund University researcher David Gisselsson, has found an answer.

28 Apr 2005

Isotopes for society

The nucleus of an atom contains protons and neutrons. However, some atoms of the same chemical element can have varying numbers of neutrons, giving so-called isotopes of that element.

27 Apr 2005

Scientists have, for the first time, induced a state of reversible metabolic hibernation in mice

Scientists at Fred Hutchinson Cancer Research Center have, for the first time, induced a state of reversible metabolic hibernation in mice. This achievement, the first demonstration of "hibernation on demand" in a mammal, ultimately could lead to new ways to treat cancer and prevent injury and death from insufficient blood supply to organs and tissues.

23 Apr 2005