Pain Really Is All In Your Head. Emotion Controls Intensity. Role of specialized protein affirmed in assuring normal cell development. Scientists at NYU Langone Medical Center and New York University have demonstrated that a specialized DNA-binding protein called CTCF is essential for the precise expression of genes that control the body plan of a developing embryo.
The findings, to publish online February 27 in Science, focus on mouse brain cells that work to manage an animal's movements. The results add important details to how so-called Hox genes help cells keep their positions straight and in the right positions back to front. Hox genes are arranged in particular clusters on an animal genome and only a subset of Hox genes are active in a given cell. Maintaining a precise "memory" from mother cell to daughter cell of active and inactive Hox genes is fundamental to establishing a normal body plan, the researchers report, and failure of that system produces a body part in the wrong anatomical position. Stalking a wily foe: Scientists figure out how C. difficile bacteria wreak havoc in gut.
Sometimes, science means staying awake for two days straight.
But losing sleep is a small sacrifice to make, if you want to learn more about tiny bacteria that sicken half a million Americans each year, kill more than 14,000 of them, and rack up $4.8 billion in health care costs. That's what drove a team of University of Michigan scientists to work around the clock to study the bacterium called Clostridium difficile, or C. difficile, the bane of hospitals and nursing homes. Most patients develop it after taking antibiotics. Deadly Gut Bacteria Causes Nearly Half a Million Infections Yearly. Nearly half a million cases of the difficult-to-treat and sometimes deadly infection called "C. diff" now occur yearly in the United States, according to a new report from the Centers for Disease Control and Prevention.
Researchers found that in 2011, Americans had an estimated 453,000 infections with the bacteria Clostridium difficile, or C. difficile, which can cause severe diarrhea, and frequently comes back after treatment. About two-thirds of these cases occurred among people in hospitals, the report found. 'Big Brain' Gene Found in Humans, Not Chimps. A single gene may have paved the way for the rise of human intelligence by dramatically increasing the number of brain cells found in a key brain region.
This gene seems to be uniquely human: It is found in modern-day humans, Neanderthals and another branch of extinct humans called Denisovans, but not in chimpanzees. By allowing the brain region called the neocortex to contain many more neurons, the tiny snippet of DNA may have laid the foundation for the human brain's massive expansion. "It is so cool that one tiny gene alone may suffice to affect the phenotype of the stem cells, which contributed the most to the expansion of the neocortex," said study lead author Marta Florio, a doctoral candidate in molecular and cellular biology and genetics at the Max Planck Institute of Molecular Cell Biology and Genetics in Dresden, Germany. Health News - 2015 Science and Medicine Articles.
Drop Sugar for Lent? Here's How Your Brain's (Not) Coping. This article was originally published on The Conversation.
The publication contributed this article to Live Science's Expert Voices: Op-Ed & Insights. Older people and eating disorders: not 'just a teenager's problem' Medical News Today. Eating disorders can affect people regardless of their age, race, gender identity, ethnicity or sexuality.
'Big Brain' Gene Found in Humans, Not Chimps. Science News, Articles, and Information - Scientific American. The link between skin and psychology. When Rick Fried, MD, PhD, gave a talk at a dermatology conference seven years ago on the relationship between psychological and dermatological problems, at least one dermatologist in the audience was skeptical about the mind/body connection.
Then another dermatologist stepped to Fried's defense, telling her colleague that before he attacked Fried he should at least make sure his zipper was up. THE BRAIN FROM TOP TO BOTTOM. The basic function of the brain is to produce behaviours, which are, first and foremost, movements.
Several different regions of the cerebral cortex are involved in controlling the body's movements. Exercise and the Ever-Smarter Human Brain. Michael Poehlman/Getty images.
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MicroRNA Expression Aberration as Potential Peripheral Blood Biomarkers for Schizophrenia. Abstract Since brain tissue is not readily accessible, a new focus in search of biomarkers for schizophrenia is blood-based expression profiling of non-protein coding genes such as microRNAs (miRNAs), which regulate gene expression by inhibiting the translation of messenger RNAs. This study aimed to identify potential miRNA signature for schizophrenia by comparing genome-wide miRNA expression profiles in patients with schizophrenia vs. healthy controls.
MicroRNAs as novel biomarkers of schizophrenia (Review). Lifetime stress experience: transgenerational epigenetics and germ ... The stunting syndrome in developing countries.