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Tag Archives: Nature

‘Stem cell hope’ for deaf people

‘Stem cell hope’ for deaf people

12 September 2012 Last updated at 13:00 ET By James Gallagher Health and science reporter, BBC News UK researchers say they have taken a huge step forward in treating deafness after stem cells were used to restore hearing in animals for the first time. Hearing partially improved when nerves in the ear, which pass sounds into the brain, were rebuilt in gerbils – a UK study in the journal Nature reports. 1 Getting the same improvement in people would be a shift from being unable to hear traffic to hearing a conversation Continue reading

Crippling viruses ’cause asthma’

Crippling viruses ’cause asthma’

9 September 2012 Last updated at 13:54 ET By James Gallagher Health and science reporter, BBC News Viral infections in newborns “cripple” part of the immune system and increase the risk of asthma later in life, US researchers studying mice have said. Continue reading

Most mutations come from dad: New insights into age, height and sex reshape views of human evolution

Most mutations come from dad: New insights into age, height and sex reshape views of human evolution

ScienceDaily (Aug. 23, 2012) — Humans inherit more than three times as many mutations from their fathers as from their mothers, and mutation rates increase with the father’s age but not the mother’s, researchers have found in the largest study of human genetic mutations to date. The study, based on the DNA of around 85,000 Icelanders, also calculates the rate of human mutation at high resolution, providing estimates of when human ancestors diverged from nonhuman primates Continue reading

‘DNA wires’ could help physicians diagnose disease

‘DNA wires’ could help physicians diagnose disease

ScienceDaily (Aug. Continue reading

Chemotherapy ‘undermines itself’

Chemotherapy ‘undermines itself’

5 August 2012 Last updated at 22:33 ET Chemotherapy can undermine itself by causing a rogue response in healthy cells, which could explain why people become resistant, a study suggests. Continue reading

Prostate ‘growth’ gene identified

Prostate ‘growth’ gene identified

3 August 2012 Last updated at 20:13 ET Scientists from Edinburgh University have pinpointed a gene they say could lead to improvements in the diagnosis and treatment of prostate cancer. The team studied genes that control the formation of the prostate gland and identified one known as Decorin Continue reading

Stem cells drive tumour growth

Stem cells drive tumour growth

1 August 2012 Last updated at 13:00 ET By Pallab Ghosh Science correspondent, BBC News Researchers have discovered the cells in tumours that seem to be responsible for the regrowth of tumours. Three separate studies on mice appear to have confirmed the view that the growth of tumours is driven by so-called cancer stem cells. The researchers claim to have resolved one of the biggest controversies in cancer research and say their work marks a “paradigm shift” in the field Continue reading

Feces fossils show connection between Native-Americans, diabetes: Did fat-hoarding genes develop from the nature of ancient feasts?

Feces fossils show connection between Native-Americans, diabetes: Did fat-hoarding genes develop from the nature of ancient feasts?

ScienceDaily (July 24, 2012) — Why do Native Americans experience high rates of diabetes? A common theory is that they possess fat-hoarding “thrifty genes” left over from their ancestors — genes that were required for survival during ancient cycles of feast and famine, but that now contribute to the disease in a modern world of more fatty and sugary diets. A newly published analysis of fossilized feces from the American Southwest, however, suggests this “thrifty gene” may not have developed because of how often ancient Natives ate. Continue reading