2,456 results
2,456 results for: mutations
- Health & Medicine
Risk Factor: Genetic defect hikes breast cancer threat
A mutation already linked to several types of cancer doubles the risk of breast cancer in a woman and multiplies men's slight risk of the disease even more dramatically.
- Health & Medicine
Deadly Pickup: Enzyme permits plague germ to ride in fleas
Acquisition of a gene that enables the plague bacterium to live inside blood-sucking fleas may have set the stage for the Black Death.
- Health & Medicine
Surgical Option: Removal of ovaries can prevent cancers in women at risk
In women who harbor mutations in one of the BRCA genes, ovary removal reduces the risk of developing ovarian, peritoneal, and breast cancers.
- Health & Medicine
Smart Drugs: Leukemia treatments nearing prime time
Three new drugs stop acute myeloid leukemia in mice, suggesting the treatments will work in people with this deadly blood cancer.
- Health & Medicine
Sex, smell and appetite
A study of sexual dysfunction in mutated mice may help explain the connection between smell and appetite.
- Health & Medicine
Melanoma gene quickly reeled in
Biologists have discovered a gene that may contribute to many cases of deadly skin cancer.
- Plants
Sunflower genes don’t fit pattern
Comparison between crop and wild sunflower genes suggests that the plant followed an easy route to domestication.
- Health & Medicine
Lost and found
Researchers have shown that a drug may shepherd a mutated protein—gone astray in people with cystic fibrosis—into its proper place.
- Health & Medicine
New Compounds Inhibit HIV in Lab
Two new compounds uncovered by pharmaceutical scientists block integrase, an enzyme essential to the replication cycle of the virus that causes AIDS.
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Drugs order bacteria to commit suicide
Seeking to explain how antibiotics work, scientists find a protein that commands bacteria to kill themselves.
- Health & Medicine
HIV may date back to the 1930s
Genetic analysis of the AIDS virus suggests it first infected humans in the first third of the 20th century.
- Health & Medicine
One more reason to worry
A single dose of the AIDS drug nevirapine, given to mothers to help prevent them from infecting their children during birth, may be enough to prod the virus to develop drug resistance.
