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Evolution has been working very hard to produce us humans

The genes that regulate brain development and function evolved much more rapidly in humans than in nonhuman primates and other mammals because of natural selection processes unique to the human lineage. Researchers reported their findings in the cover article of the Dec. 29, 2004, issue of the journal Cell.

28 Dec 2004

Somatic hypermutation (SHM) should prove to be extremely useful in directed protein evolution

Fascinated by the efficient way the human immune system generates a rapid response to create a near-infinite variety of antibodies, researchers have "hijacked" that machinery and used it to evolve a new type of fluorescent protein.

23 Dec 2004

Wireless technology does not affect pacemakers and defibrillators

With the dynamic evolution of wireless technology, Mayo Clinic researchers have been concerned about the potential effects of electromagnetic interference on heart pacemakers and implantable cardioverter-defibrillators.

22 Dec 2004

Permanent resistance to antibiotics cannot be prevented

Dutch research has shown that the development of permanent resistance by bacteria and fungi against antibiotics cannot be prevented in the longer-term. The only solution is to reduce the dependence on antibiotics by using these less.

20 Dec 2004

Ethical challenges ahead for neuroscience and society

Are we ready for a future where brain scans invade our private thoughts? Will we have to alter our brains chemically to keep competitive at our jobs? Could science determine that "souls" do not exist, and, if so, what does that mean for how we think of ourselves as human beings?

20 Dec 2004

The regulation of physical activity in young children

The evidence at present suggests that neither better facilities, nor an increase in the amount of time allocated to PE to four hours a week, will improve physical activity levels in children as a whole and thereby impact on the rising tide of obesity.

16 Dec 2004

New theory driving evolutionary changes

Researchers at UT Southwestern Medical Center at Dallas have used canine DNA to identify a genetic mutation mechanism they believe is responsible for rapid evolutionary changes in the physical appearance of many species.

14 Dec 2004

Patent issued for generating genetically evolved mammalian cells through the regulation of mismatch repair

Morphotek announced today the issuance of United States Patent 6,825,038 covering the regulation of mismatch repair (MMR), a powerful process for generating functional diversity in mammalian cells, to yield sibs exhibiting desirable phenotypes for target discovery, drug screening and/or product development.

13 Dec 2004

Powerful women at a disadvantage in the marriage market because men may prefer to marry less accomplished women

Men are more likely to want to marry women who are their assistants at work rather than their colleagues or bosses, a University of Michigan study finds.

13 Dec 2004

Discovery of key immune system molecules that helps determine how effectively a person resists HIV infection

A team of researchers based partly in South Africa has identified a key set of immune system molecules that helps determine how effectively a person resists infection with human immunodeficiency virus (HIV).

8 Dec 2004

Gauging the risk from prolonged low-level radiation

Everyone knows that high doses of radiation are dangerous, but the effects of long-term exposure to low-level radiation is poorly understood. RISC-RAD, a new European Union backed research project, seeks to identify our tolerance threshold so as to optimise protective measures.

7 Dec 2004

New clues in understanding why group A streptococci (GAS) has a range of bacterial afflictions in humans

Researchers have unlocked new clues in understanding why group A streptococci (GAS) has a range of bacterial afflictions in humans. One of the keys to this species of bacteria is its production of streptokinase (SK), an enzyme that activates plasminogen, the blood clot-dissolving protein in humans.

6 Dec 2004

MRI reveals similarities between the human and chimpanzee brain

New MRI-based studies present more evidence that the brains of chimpanzees are human-like in terms of the relationships among brain asymmetry, handedness and language, according to research undertaken at the Yerkes National Primate Research Center in Atlanta.

6 Dec 2004

Human endogenous retroviruses (HERVs)

Human endogenous retroviruses (HERVs) have been the subject of a great deal of investigation in recent years. It has been established that HERVs cause some genetic diseases and there is strong circumstantial evidence for a link to some types of cancer and autoimmune diseases, but what else do we need to know about these unique organisms?

4 Dec 2004

Fossil record of the human immune system reveals antibodies that block cancer metastasis

A team of researchers at The Scripps Research Institute has reconstructed the "fossil record" of the immune systems of a group of human cancer patients to investigate if they had ever produced antibodies against their disease.

4 Dec 2004

Women now making up nearly half of the 37.2 million adults (aged 15-49) living with HIV worldwide

A new report released today shows that the number of women living with HIV has risen in each region of the world over the past two years, with the steepest increases in East Asia, followed by Eastern Europe and Central Asia. In East Asia, there was a 56% increase over the past two years, followed by Eastern Europe and Central Asia with 48%.

23 Nov 2004

Cells linked to asthma and eczema also help cure deadly illness in mice

Mast cells are immune cells known mostly for their unwanted effects: they cause the wheezing of asthma, the itching of eczema, the sneezing and runny nose of hay fever and, in extreme cases, the life-threatening shock of anaphylaxis.

20 Nov 2004

Combining radiation therapy with surgery and chemotherapy helps patients with rare forms of thyroid cancer live longer

Combining radiation therapy with surgery and chemotherapy helps patients with rare forms of thyroid cancer live longer, according to a study published in the November 15, 2004, issue of the International Journal of Radiation Oncology~Biology~Physics, the official journal of ASTRO, the American Society for Therapeutic Radiology and Oncology.

16 Nov 2004

Mast cells can provide protection from a potentially deadly condition known as sepsis

14 Nov 2004

Sex genes of infectious fungus closely resemble human Y chromosome

Fungi and animals, including humans, have a lot in common when it comes to the arrangement of genes that determine their sex, according to new work by Howard Hughes Medical Institute geneticists at the Duke University Medical Center.

10 Nov 2004