January 26, 2009 |
Fast-growing salmon. Pork containing heart-healthy omega-3 fatty acids. These are two examples of products you might see in your local supermarket soon -- animals developed not through conventional breeding but through genetic engineering. On Jan. 15, the U.S. Food and Drug Administration decided how it will regulate genetically engineered animals, for the first time paving the way for such animals or their products to be sold as food and medicine.
November 11, 2013 |
Cocaine use may not make you a better dad, but it may make your son a bit more resistant to addiction, says a new study conducted on rats. Compared with the pups of rats who got no cocaine, the male offspring of rats that were allowed to self-administer cocaine for two months behaved very differently under the influence of the drug. When they got repeated doses of cocaine, rats sired by undrugged fathers responded with an escalating frenzy of movement - in rats, a sign of incipient addiction.
January 23, 2005 |
It has long been a matter of contention: Was the Aztec and Mayan practice of human sacrifice as widespread and horrifying as the history books say? Or did the Spanish conquerors overstate it to make the Indians look primitive? In recent years archeologists have uncovered mounting physical evidence that corroborates the Spanish accounts in substance, if not number.
January 17, 2004 |
An inmate who spent two decades on death row before DNA evidence exonerated him walked out of prison a free man, saying he just wanted to get home and be with his family. Nicholas Yarris is the first Pennsylvania death row inmate cleared by DNA testing. Yarris' 1983 conviction for rape and murder was overturned last summer when DNA tests proved that genetic material found on the victim belonged to someone else.
September 8, 2007 |
Alnylam Pharmaceuticals Inc. and Isis Pharmaceuticals Inc. have formed a venture uniting Nobel Prize winners David Baltimore and Phillip Sharp to create drugs from a newly discovered class of genetic material. The venture, Regulus Therapeutics, will have exclusive licenses from Alnylam and Isis for technology focused on so-called microRNAs. The molecules regulate networks of genes that may be involved in diseases including cancer, viral infections and metabolic disorders, the companies said.
June 1, 1999 |
Scientists in Hawaii have cloned a trio of identical mice using ordinary cells rather than DNA extracted from the female reproductive system. This time, the cloned critters were male. The clones grew using genetic material extracted from tail cells of adult male mice, but only one grew to adulthood, according to a study in the June issue of the journal Nature Genetics.
December 11, 2004 |
Scientists have identified the cause of Werner syndrome, a rare accelerated aging disease whose sufferers prematurely develop gray hair, wrinkled skin, cataracts, cancer and heart disease, dying in their 40s. Researchers at the Salk Institute for Biological Studies in La Jolla reported in the journal Science that patients with Werner syndrome couldn't properly replicate the ends of their chromosomes due to a defective gene, WRN.
CALIFORNIA | LOCAL
February 20, 1997 |
Small defects in the male chromosome may be responsible for some cases of infertility, University of Minnesota doctors report in the New England Journal of Medicine. Dr. Jon Pryor and his team found that 7% of the 200 infertile men they studied were missing tiny pieces of their Y chromosomes, genetic material found only in males. However, further study revealed that the deleted pieces did not always cause infertility.
December 24, 2001
British scientists have mapped chromosome 20, the third and longest chromosome to be sequenced in the Human Genome Project. Chromosome 20 is best known for harboring genes that contribute to forms of the brain-wasting Creutzfeldt-Jakob disease and severe-combined immunodeficiency, an illness in which the immune system is crippled. Chromosome 20 contains 727 genes and accounts for about 2% of the total human genetic material, the team reported in the Dec. 20 issue of Nature.