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Latest Chromosomes Stories

2011-07-29 13:03:11

Telomeres, the complex structures that protect the end of chromosomes, of peripheral blood cells are significantly shorter in patients with familial breast cancer than in the general population. Results of the study carried out by the Human Genetics Group of the Spanish National Cancer Research Centre (CNIO), led by Javier Benitez, to be published in open-access journal PLoS Genetics on July 28th, reflect that familial, but not sporadic, breast cancer cases are characterized by shorter...

2011-07-22 14:17:40

Researchers from Trinity College Dublin have uncovered the evolutionary mechanisms that have caused increases or decreases in the numbers of chromosomes in a group of yeast species during the last 100-150 million years. The study, to be published on July 21st in the open-access journal PLoS Genetics, offers an unprecedented view of chromosome complement (chromosome number) changes in a large group of related species. A few specific cases of chromosome number changes have been studied in...

2011-07-21 16:15:00

HOUSTON, July 21, 2011 /PRNewswire/ -- America's #1 rated morning news program, The Today Show, featured a story highlighting SpectraCell's Telomere Test, a blood test that measures cellular aging. The segment entitled How to Live to 100 showcased SpectraCell's Telomere Test as a tool for those interested in monitoring their health with biomarkers specific to longevity and aging. The Telomere Test measures a person's biological age in comparison to their chronological age, giving a person...

2011-07-18 14:24:58

"ËœCord-stopper' protein complex makes chromosomes easier to move As any rock-climber knows, trailing a long length of rope behind you is not easy. A dangling length of rope is unwieldy and hard to manoeuvre, and can get tangled up or stuck on an outcropping. Cells face the same problem when dragging chromosomes apart during cell division. The chromosomes are pulled by their middle "“ the centromere "“ their arms trailing along behind. Just like climbers carry their rope...

2011-07-15 14:53:35

Telomeres, the body's own cellular clocks, may be a crucial factor underlying the development of emphysema, according to research from Johns Hopkins University. "We found that in mice that have short telomeres, there was a significant increased risk of developing emphysema after exposure to cigarette smoke," said Mary Armanios, MD, assistant professor of oncology at the Johns Hopkins School of Medicine. The study appears online ahead of the print edition of the American Journal of Respiratory...

2011-06-30 19:28:01

Scientists at Johns Hopkins have provided more clues to one of the least understood phenomena in some cancers: why the "ends caps" of cellular DNA, called telomeres, lengthen instead of shorten. In a study published online June 30 in Science Express, the Johns Hopkins researchers say they have identified two genes that, when defective, may cause these telomere elongations. Telomeres contain repeated sequences of DNA that, in normal cells, shorten each time a cell divides. Without telomeres,...

2011-06-15 13:30:29

Genes control everything from eye color to disease susceptibility, and inheritance - the passing of the genes from generation to generation after they have been duplicated - depends on centromeres. Located in the little pinched waist of each chromosome, centromeres control the movements that separate sister chromosomes when cells divide ensuring that each daughter cell inherits a complete copy of each chromosome. It has long been known that centromeres are not formed solely from DNA; rather,...

2011-05-17 08:00:00

Study of institutionalized Romanian children finds prematurely shortened telomeres, a mark of cell aging BOSTON, May 17, 2011 /PRNewswire-USNewswire/ -- Studies in institutionalized Romanian children have found that the length of time spent in conditions of social deprivation and neglect correlates with lower IQ and behavioral problems. A new study, led by researchers at Children's Hospital Boston and Tulane University, shows that early adversity even affects children's chromosomes -...

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2011-05-16 14:43:53

A new blood test is going on sale this year that will predict how long someone has to live, based on their speed of aging. Researchers developed the $700 test that accurately measures the length of a person's telomeres, which is thought to be linked to longevity. Telomeres are sections of DNA that cap the ends of chromosomes, protecting them from damage and the loss of cell functions associated with aging. Life Length, a Spanish firm, developed the new commercial "death test," which it...

2011-05-06 14:25:04

Cancer researchers at UT Southwestern Medical Center are helping unlock the cellular-level function of the telomerase enzyme, which is linked to the disease's growth. Their latest findings, published today in Molecular Cell, demonstrate that telomerase repairs chromosomes in one of two ways "“ depending on whether a cell is dividing normally or if the cell is under stress from enzyme inhibition "“ and could lead to new or improved cancer-fighting therapies that promote inhibition...


Word of the Day
reremouse
  • A bat.
The word 'reremouse' comes from Middle English reremous, from Old English hrēremūs, hrērmūs ("bat"), equivalent to rear (“to move, shake, stir”) +‎ mouse.
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