Evolution News and Research

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Digital tomosynthesis shows promise over conventional film mammography

...as a more specific breast screening technique and a more accurate diagnostic technology, according to a study presented at the annual meeting of the Radiological Society of North America (RSNA).

7 Dec 2005

New type of sulfite reductase

Biswarup Mukhopadhyay and Eric Johnson from the Virginia Bioinformatics Institute at Virginia Tech have discovered a novel enzyme that represents an ancient detoxification system and provides a clue to the development of early metabolism on earth.

7 Dec 2005

Understanding obesity in humans

A new study by researchers at UT Southwestern Medical Center suggests that when fat cells increase in size - as they do during the development of obesity - the cells progressively lose receptors for the hormone leptin, a powerful stimulus for fat burning.

7 Dec 2005

MicroRNAs greatly influence the evolution of genes

RNA continues to shed its reputation as DNA's faithful sidekick. Now, researchers in the lab of Whitehead Institute Member David Bartel have found that a class of small RNAs called microRNAs influence the evolution of genes far more widely than previous research had indicated.

7 Dec 2005

The evolutions and functions of laughter and humor

In an important new study from the forthcoming Quarterly Review of Biology, biologists from Binghamton University explore the evolution of two distinct types of laughter - laughter which is stimulus-driven and laughter which is self-generated and strategic.

7 Dec 2005

Humans have ancient genes

Species evolve at very different rates, and the evolutionary line that produced humans seems to be among the slowest.

7 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

Evolution explains age of puberty

Children aged 10 and 11 are sexually mature, and neither they nor society are suitably prepared for the implications of that.

30 Nov 2005

Completion of the genetic sequencing of the 1918 influenza A virus

An article by Robert Belshe, M.D., of Saint Louis University School of Medicine in the New England Journal of Medicine reviews recent "spectacular achievements of contemporary molecular biology" that hold great importance as the world prepares for a possible flu pandemic.

28 Nov 2005

Bionic fiction becomes science fact

A highly dexterous, bio-inspired artificial hand and sensory system that could provide patients with active feeling, is being developed by a European project.

28 Nov 2005

Carbonic anhydrase and CO2 sensing during Cryptococcus neoformans growth, differentiation, and virulence

By using pathogenic fungi as model systems for understanding fungal diseases, two groups of researchers are reporting new work that offers insight into how carbon dioxide (CO2) governs the morphogenic changes that allow pathogenic fungi to survive in different environments and invade the human body

21 Nov 2005

Study of how bacteria change their metabolic networks

Bacteria feel pressures to evolve antibiotic resistance and other new abilities in response to a changing environment, and they react by 'stealing' genetic information from other better-adapted types of bacteria, according to research published in Nature Genetics.

20 Nov 2005

Australian study highlights lateral genetic transfer

A University of Queensland study mapping the evolution of genes has shed light on the role of gene transfer in bacterial diseases.

14 Nov 2005

Loneliness may be heredity

Heredity helps determine why some adults are persistently lonely, research co-authored by psychologists at the University of Chicago shows.

13 Nov 2005

New high-resolution data on intact ribosome

A new, sharper picture of the nano-machine that translates our genetic program into proteins promises to help researchers explain how some types of antibiotics work and could lead to the design of better ones.

7 Nov 2005

Stem cells appear to play a role in repairing organs

Not least because undifferentiated cells with features typical of stem cells are being increasingly found in organs like the liver, brain, and muscles, scientists are beginning to assume that these cells play a role in repairing organs.

3 Nov 2005

Fundamental insight about protein evolution

While searching for new targets for malaria drugs and vaccines, a team including a Howard Hughes Medical Institute (HHMI) medical student fellow reached a fundamental insight about evolution: different species make use of similar sets of proteins in different ways.

3 Nov 2005

Cichlid fish provide better understanding of the genetic factors that regulate bone shape

Researchers at the Forsyth Institute have discovered that the genes that influence the jaws of cichlid fish, tropical freshwater fish renowned for head shape diversity, offer insight into overall vertebrate diversity.

30 Oct 2005

Avian Influenza in Alaska

Alaska is at the overlap for parts of the Asian and North American flyways for migratory birds which scientists say could provide an opportunity for exchange of bird flu viruses which then could lead to the evolution of new strains of viruses that could infect humans.

30 Oct 2005

HapMap will give clues to many common diseases

Researchers say that they have completed a map that charts patterns of human genetic variation in the world population, to better understand human biology, evolution and how to diagnose diseases.

27 Oct 2005