background preloader

Genetic

Facebook Twitter

Vast Diversity Found in Genetics of Mexico. Researchers have discovered tremendous genetic diversity between Mexico’s local populations.

Vast Diversity Found in Genetics of Mexico

The genomes of Mexicans with mixed ancestry reflect these differences, which have implications for many aspects of Latino health. In the largest-ever genomic dataset on indigenous populations, researchers reveal how Mexican genomes were shaped by population dynamics of ancient Native Americans -- people who lived there before Europeans colonized the area. Despite the mixing associated with colonization events over the last five centuries, the genetic traces of indigenous people are still strong in modern populations. Additionally, some groups are as genetically different from one another as Europeans are from East Asians, suggesting how some groups have been isolated for hundreds of thousands of years. “We’re moving beyond blanket definitions like Mexican or Latino,” Stanford’s Andres Moreno-Estrada says in a news release. The work was published in Science this week. VIDEO. Du cartilage humain à partir de cellules souches. Scientists Grow First Functioning Human Lungs.

February 18, 2014 - Lungs are a notoriously delicate organ.

Scientists Grow First Functioning Human Lungs

That makes useable donor lungs hard to come by—in 2010, just 1,800 lung transplants took place in the United States. However, researchers are getting closer to addressing the shortage by growing lungs, for the first time, in the lab. Scientists Finally Show How Your Thoughts Can Cause Specific Molecular Changes To Your GenesTunedBody. With evidence growing that training the mind or inducing certain modes of consciousness can have positive health effects, researchers have sought to understand how these practices physically affect the body.

Scientists Finally Show How Your Thoughts Can Cause Specific Molecular Changes To Your GenesTunedBody

A new study by researchers in Wisconsin, Spain, and France reports the first evidence of specific molecular changes in the body following a period of intensive mindfulness practice. The study investigated the effects of a day of intensive mindfulness practice in a group of experienced meditators, compared to a group of untrained control subjects who engaged in quiet non-meditative activities. After eight hours of mindfulness practice, the meditators showed a range of genetic and molecular differences, including altered levels of gene-regulating machinery and reduced levels of pro-inflammatory genes, which in turn correlated with faster physical recovery from a stressful situation. The study was published in the Journal Psychoneuroendocrinology. According to Dr. In fact, Dr. Dr. ScienceAlert - Photos du journal. How To Eat Right For Your Blood Type   The Eat Right for Your Blood Type diet encourages people to eat certain foods and avoid others based on their blood type: A, B, AB or O.

How To Eat Right For Your Blood Type  

Read on to see how it would apply to you and your blood type: Peter D’Adamo, a naturopathic doctor and the author of Eat Right for Your Type: The Individualized Diet Solution to Staying Healthy, Living Longer & Achieving Your Ideal Weight, believes blood types affect our digestive systems and says that some food groups which maybe good for people of one blood type can be “dangerous” for another(i). Harmonizing a Broken Heart: Stem Cells Keep Cardiac Beat in Synchrony. First Posted: Sep 04, 2013 03:00 PM EDT Stem cell therapy used to regenerate injured tissue in the heart also restores synchronous pumping, new research shows, and could thus be used to make pacing devices redundant.

Harmonizing a Broken Heart: Stem Cells Keep Cardiac Beat in Synchrony

Like Us on Facebook The team behind the study proposes a novel strategy of “biological resynchronization” in which stem cells repair heart muscle damage to reestablish correct cardiac motion, replacing pacing devices, Heart attacks limit local oxygen, which can kill areas of cardiac tissue — called ‘infarcted’ areas — and also leave scarring. A Colorful Image That Could Lead to Better Antibiotics. First Posted: Jul 10, 2013 04:54 PM EDT It may look like a tangle of colorful, squiggly lines, but it’s actually a sophisticated molecular machine called a ribosome.

A Colorful Image That Could Lead to Better Antibiotics

A ribosome’s job is to build and assemble proteins, the workhorse compounds that sustain all living things. Genetic Diseases May Receive Help from Modified HIV Virus. First Posted: Jul 12, 2013 12:11 AM EDT Scientists may have just identified a potential drug to block AIDS.

Genetic Diseases May Receive Help from Modified HIV Virus

They've found the precise chain of molecular events in the human body that drives the death of most of the immune system's CD4 T cells as an HIV infection leads to AIDS. (Photo : Reuters) Recent research shows promising results for children with hereditary diseases like metachromatic leukodystrophy and Wiskott Aldrich syndrome who undergo gene therapy vectors derived from the HIV virus. Like Us on Facebook "Three years after the start of the clinical trial, the results obtained from the first six patients are very encouraging: the therapy is not only safe, but also effective and able to change the clinical history of these severe diseases," lead researcher Luigi Naldini said in a news release.

Researchers looked to the therapy in order to determine if it could help alleviate problems affected by the disease. Obesity FTO Gene Discovered, Higher Levels of 'Hunger Hormone' Ghrelin in Blood. First Posted: Jul 15, 2013 02:39 PM EDT Red blood cells (Photo : Flickr/Andrew Mason) Health experts believe they may have targeted a gene that causes obesity.

Obesity FTO Gene Discovered, Higher Levels of 'Hunger Hormone' Ghrelin in Blood

Like Us on Facebook Known as the FTO gene, researchers believe that this affects one in six of the population, making those carrying the genetic tendencies 70 percent more likely to become obese. A series of tests showed that people with the variation not only had higher levels of the "hunger hormone" ghrelin in their blood, but they also had an increased sensitivity to the chemical in their brains, according to the study. "It's a double hit," said Rachel Batterham from University College London, who led the study, via Reuters.

The study shows that following meals, researchers looked at blood samples to analyze functional magnetic resonance imaging of the volunteers' brains. Batterham said the work provided new insights and possible new leads for treatment regarding experimental drugs that are known to suppress appetite. ScienceAlert - Photos du journal. Japon : les scientifiques ont cloné une souris à partir d'une goutte de sang.