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Wed, 30 Jul 2014 20:37:07 EDT
Otzi Iceman had genetic predisposition for atherosclerosis: Much the same in ancient peoples as it is today
While prevalence and types of risk factors for atherosclerosis have varied over time from ancient times to modern society -- such as levels of obesity, physical activity -- genetic predisposition/risk for the condition today appears to be very similar to that in ancient times.
Wed, 30 Jul 2014 17:31:30 EDT
Mechanism promoting multiple DNA mutations described by scientists
Recent studies have shown that cancer development frequently involves the formation of multiple mutations that arise simultaneously and in close proximity to each other. These groups of clustered mutations are frequently found in regions where chromosomal rearrangements take place. The finding that cancer development often involves multiple mutations arising in clusters and in regions where chromosomal rearrangement takes place may one day lead to new cancer therapies.
Wed, 30 Jul 2014 16:15:29 EDT
Diverticulitis patients reveal psychological, physical symptoms long after acute attacks
Patients were interviewed by a research team in great detail about the symptoms they experience weeks, months or even years after an acute diverticulitis attack. Their striking findings add to growing evidence that, for some patients, diverticulitis goes beyond isolated attacks and can lead to a chronic condition that mimics irritable bowel syndrome. The researchers used those insights to develop a questionnaire to help doctors better assess the long-term impact of diverticulitis, which ultimately could lead to better understanding and management of the disease.
Wed, 30 Jul 2014 15:17:09 EDT
Pesticide DDT linked to slow metabolism, obesity and diabetes, mouse study finds
A new study in mice is the first to show that developmental exposure to DDT increases the risk of females later developing metabolic syndrome -- a cluster of conditions that include increased body fat, blood glucose, and cholesterol.
Wed, 30 Jul 2014 15:17:07 EDT
Vocal variety in African penguins: Four basic vocalizations used for adult communication, two more for the young
Adult African penguins communicate using four different vocalizations and juveniles and chicks use two begging calls to request food.
Wed, 30 Jul 2014 15:11:36 EDT
New malaria vaccine candidates identified
Researchers have discovered new vaccine targets that could help in the battle against malaria. Taking a new, large-scale approach to this search, researchers tested a library of proteins from the Plasmodium falciparum parasite with antibodies produced by the immune systems of a group of infected children.
Wed, 30 Jul 2014 14:10:24 EDT
Fear of losing money, not spending habits, affects investor risk tolerance
Scientists analyzed the causes of risk tolerance and found that loss aversion, or the fear of losing money, is the primary factor that explains investors' risk tolerance.
Wed, 30 Jul 2014 14:10:20 EDT
Antarctic ice sheet is result of carbon dioxide decrease, not continental breakup
Climate modelers have shown that the most likely explanation for the initiation of Antarctic glaciation during a major climate shift 34 million years ago was decreased carbon dioxide levels. The finding counters a 40-year-old theory suggesting massive rearrangements of Earth's continents caused global cooling and the abrupt formation of the Antarctic ice sheet. It will provide scientists insight into the climate change implications of current rising global carbon dioxide levels.
Wed, 30 Jul 2014 14:09:20 EDT
Deep-sea octopus broods eggs for over four years -- longer than any known animal
Researchers have observed a deep-sea octopus brooding its eggs for four-and-a-half years -- longer than any other known animal. Throughout this time, the female kept the eggs clean and guarded them from predators.
Wed, 30 Jul 2014 14:09:18 EDT
Kids with autism and sensory processing disorders show differences in brain wiring
Researchers have found that children with sensory processing disorders have decreased structural brain connections in specific sensory regions different than those in autism, further establishing SPD as a clinically important neurodevelopmental disorder.
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