Medical Science News

RSS

Mini-beacon design a major development for smart drug delivery

A nanoscopic beacon used by Melbourne researchers will help to enhance the design of smart gene and drug delivery systems.

1 Aug 2005

Amazing 'smart bomb' drug zaps cancer cells in mice without damaging healthy cells

Scientists say they have developed an anti-cancer 'bomb' which has a similar behavior to a Trojan horse.

28 Jul 2005

If you're a worm, and stressed as well - its not good!

According to U.S. scientists how well you respond to stress predicts how long you will live, at least if you are a worm.

27 Jul 2005

First large-scale effort to sequence the flu genome

Multiple strains of the flu virus, circulating in a population at the same time, can reshuffle their genes and create a new virus, one capable of infecting many more people, according to a new study in the open-access journal PLoS Biology.

26 Jul 2005

More efficient genome-mining technique

An innovative new statistical method, described in the open-access journal PLoS Biology, streamlines the computation required to identify all the potential locations in the genome that influence a particular physical trait, or phenotype.

26 Jul 2005

Plant toxins in the diets of early humans drove the evolution of taste

Plant toxins in the diets of early humans drove the evolution of a bitter taste receptor better able to detect them, suggests new genetic research by scientists at University College London, Duke University Medical Center, and the German Institute of Human Nutrition.

25 Jul 2005

In vivo engineering of organs: The bone bioreactor

An international team of biomedical engineers has demonstrated for the first time that it is possible to grow healthy new bone reliably in one part of the body and use it to repair damaged bone at a different location.

25 Jul 2005

Hidden secrets on the nature and timing of genome evolution in mammals revealed

Breakages in chromosomes in mammalian evolution have occurred at preferred rather than random sites as long thought, and many of the sites are involved in human cancers, an international team of 25 scientists has discovered.

21 Jul 2005

Engineered tissue is more viable with blood of its own

By adding small blood vessels to artificially grown muscle tissue, the chances of succesful tissue 'repair' rise. Without nourishing blood, thicker tissue has limited viability.

21 Jul 2005

One of the first studies to define how unique we are on the genetic level

We all share the same genetic code, but a team from the Institute of Food Research (IFR) has found that the way our genes function varies significantly between individuals, particularly in some key areas including the immune system.

19 Jul 2005

Two regions of the human genome that appear to explain variation in IQ

It may be that IQ tests are not the only way to measure human intelligence. Scientists at The Queensland Institute of Medical Science (QIMR) have identified two regions of the human genome that appear to explain variation in IQ. Their work was published this week in the American Journal of Human Genetics and has drawn world-wide interest.

19 Jul 2005

Scientists determine the structures of eight proteins in just 10-20 days per protein

A University at Buffalo scientist created a stir in 2003 when he announced a much faster, more precise and far less expensive method of obtaining nuclear magnetic resonance (NMR) data to map a protein's atomic structure. Genomics researchers were fascinated, but some also were a bit skeptical.

18 Jul 2005

Startling discovery about the properties of human bone

The scientists describe their results - finding a sort of "glue" in human bone - in the cover story of the August issue of the international scientific journal, Nature Materials. The article was published on-line on July 17. It describes how healthy bone resists fracture and how unhealthy bone fractures at the molecular level.

18 Jul 2005

New molecular insights may one day lead to opportunities to stave off old age

Delving deep into the molecular subtleties of a strain of mice engineered to age rapidly, scientists have found that an accumulation of genetic mutations prompts a cascade of programmed cell death that seems to underpin the aging process.

18 Jul 2005

Scientists sequence the genomes of three species of parasites responsible for causing diseases that kill or cripple millions

Howard Hughes Medical Institute (HHMI) scientists who participated in the project say the sequencing of the genomes of the parasitic protozoa that cause Chagas disease, African sleeping sickness, and leishmaniasis, could significantly impact world health. Some of the genes discovered may prove to be good drug and vaccine targets.

17 Jul 2005

Extraordinary number of genes are required for prenatal mammalian development

A team of scientists led by Cornell University's Dr. John Schimenti reports today that an extraordinary number of genes are required for prenatal mammalian development. The researchers estimate that up to 19% of all genes are vital for embryogenesis in mice.

17 Jul 2005

Scientists have begun to clarify how one of the body's molecules controls the trafficking of T cells through the blood

...lymph nodes and on to tissues to fight infection -- a crucial response that sometimes goes awry, attacking the body's own tissues and causing autoimmune diseases.

17 Jul 2005

Cigarette smoke stops transport of freshly ovulated hamster eggs

Eggs of female hamsters are significantly less likely to be transported by the oviduct when the eggs or the oviduct have been exposed to cigarette smoke, and this could result in disruption of fertilization and pregnancy, according to reproductive scientists at the University of California, Riverside.

17 Jul 2005

Experts discuss use of human stem cells in ape and monkey brains

An expert panel of stem cell scientists, primatologists, philosophers and lawyers has concluded that experiments implanting, or grafting, human stem cells into non-human primate brains could unintentionally shift the moral ground between humans and other primates.

14 Jul 2005

A systematic search through human genes

...has begun at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany. Working within the MitoCheck consortium that includes 10 other institutes throughout Europe, the EMBL scientists will silence all human genes, one-by-one, to find those involved in cell division (mitosis) and to answer fundamental questions of how cell division is regulated.

14 Jul 2005