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Press release ANRS, INSERM, AFSSAPS
Adverse events that were unknown so far, have recently been observed in France in children who had been exposed to antiretroviral drugs (nucleosidic inhibitors of the reverse transcriptase) during intra uterine life and postnatally to prevent mother to child transmission of HIV. The children suffer from mitochondrial dysfunctions. The mitochondry... view more... (1999-06-25)
Ancient Etruscans unlikely ancestors of modern Tuscans, statistical testing reveals
For the first time, Stanford researchers have used novel statistical computer modeling to simulate demographic processes affecting the population of Tuscany over a 2,500-year time span. Rigorous tests used by the researchers have ruled out a genetic link between ancient Etruscans, the early inhabitants of central Italy, and the region's modern day... view more... (2006-05-26)
Scientists discover gene mutation responsible for hereditary neuroendocrine tumor
University of Utah researchers and their colleagues have identified the gene that is mutated in a hereditary form of a rare neuroendocrine tumor called paraganglioma (PGL). view more (2009-07-24)
New chemical tool kit manipulates mitochondria, reveals insights into drug toxicity
Why do nearly 1 million people taking cholesterol-lowering statins often experience muscle cramps? Why is it that in the rare case when a diabetic takes medication for intestinal worms, his glucose levels improve? Is there any scientific basis for the purported health effects of green tea? view more (2008-02-25)
Dual enzymatic activity of RECQ1 explained by different quaternary structures
The transient opening of the DNA double helix is a fundamental step in several DNA metabolic processes. This reaction is driven by proteins called helicases, which make use of ATP as fuel to unwind the DNA duplex. view more (2007-01-16)
UBC scientists find new way to extract diluted and contaminated DNA
University of British Columbia researchers have developed a new way to extract DNA and RNA from small or heavily contaminated samples that could help forensic investigators and molecular biologists get to "the truth." view more (2009-08-11)
Researchers Find Synthetic Molecules That May Literally Be The Key To “Locking Away” Unwanted DNA
Research chemists have a found a class of synthetic molecules that could quite literally act as a key which could lock away sections of DNA into a closely wound coil preventing proteins from interacting with particular sections of DNA code. By locking up the DNA in this way scientists could stop particular sequences of DNA from activating... view more... (2002-04-15)
Ancient trans-Atlantic swarm brought locusts to the new world
Somewhere between three and five million years ago, a massive swarm of locusts took off from the west coast of Africa and made an unlikely voyage across the Atlantic Ocean to colonize the New World, says an international team of researchers. view more (2005-12-21)
The muskox suffered a loss of genetic diversity at the Pleistocene/Holocene transition
The tundra muskox, one of the few large northern mammals to have survived to the present day, saw its genetic diversity decrease greatly at the end of the Pleistocene period, around 10,000 years ago. view more (2005-10-06)
Important new model shows how proteins find the right DNA sequences
Researchers at Uppsala University and Harvard University have collaboratively developed a new theoretical model to explain how proteins can rapidly find specific DNA sequences, even though there are many obstacles in the way on the chromosomes. view more (2009-03-16)
DNA differences may influence risk of Hodgkin disease
A new analysis has found that certain variations in genes that repair DNA can affect a person's risk of developing Hodgkin disease. view more (2009-03-09)
Barcoding endangered sea turtles
Conservation geneticists who study sea turtles have a new tool to help track this highly migratory and endangered group of marine animals: DNA barcodes. view more (2009-09-15)
Viral marker of human migration suspect
A benign virus previously used as a marker in tracing human migration may be unreliable. view more (2006-10-25)
DNA’s oscillating double helix hinders electrical conduction
DNA has an oscillating double-helix structure. This oscillating means that the DNA molecules conduct electricity much less well than was previously thought. Ultrafast cameras were one of the devices the researchers from Amsterdam used to demonstrate this. It turns out the DNA does not have a rigid regular structure as stated in textbooks. In... view more... (2002-09-11)
Immune system response to viral DNA is unique
The human body has a unique immune system response to foreign DNA, suggesting that DNA viruses and RNA viruses are detected by different mechanisms. view more (2006-01-25)
The first men and women from the Canary Islands were Berbers
A team of Spanish and Portuguese researchers has carried out molecular genetic analysis of the Y chromosome (transmitted only by males) of the aboriginal population of the Canary Islands to determine their origin and the extent to which they have survived in the current population. view more (2009-10-22)
First direct mechanical communication of mitochondria, cardiomyocyte nucleus shown
In a paper being presented in two American Physiological Society sessions at Experimental Biology 2006, a joint Estonian-French team demonstrated "for the first time that mitochondria are able to induce nuclear deformation, suggesting that mitochondria may mechanically regulate nuclear function." view more (2006-04-03)
A potent and selective anti-tumor agent on human gastric cancer
A research article to be published on June 21, 2009 in the World Journal of Gastroenterology addresses this question. view more (2009-06-29)
Mama whales teach babies where to eat
University of Utah biologists discovered that young "right whales" learn from their mothers where to eat, raising concern about their ability to find new places to feed if Earth's changing climate disrupts their traditional dining areas. view more (2009-02-09)
Antitumor agent under the microscope
Mechanical stabilization of DNA keeps tumor cells in check Cisplatin is one of the most widely employed cancer medications. As with many other chemotherapy agents, the mechanism by which it works has not been fully researched. Now, thanks to Munich physicists Hermann E. Gaub, Rupert Krautbauer, and Hauke Clausen-Schaumann, an important step toward... view more... (2000-10-30)
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