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Showing posts from September, 2017

Cell model of the brain provides new knowledge on developmental disease

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PhD scholar Mansoureh Shahsavani and docent Anna Falk on the Division of Neuroscience. Credit score: Stefan Zimmerman By reprogramming pores and skin cells into nerve cells, researchers at Karolinska Institutet are creating cell fashions of the human mind. In a brand new examine printed in  Molecular Psychiatry  the researchers describe how cells from sufferers with the extreme developmental illness lissencephaly differ from wholesome cells. The tactic can present very important new information on difficult-to-study congenital ailments. Lissencephaly is a uncommon congenital developmental illness that may be brought on by, amongst different anomalies, a mutation of the DCX gene. Affected people are born with severe developmental disabilities and a mind t...

Guidelines for handling CAR T cell side effects

Their work, published in  Nature Reviews Clinical Oncology , confronts the two main side effects of chimeric antigen receptor T-cells, known as CAR T cells , white blood cells genetically engineered to strike cells with a specific target on their surface. "CAR T cells provide an entirely new level of improved disease response among patients with certain blood cancers and hold promise for more wide-ranging use," said Elizabeth Shpall, M.D., deputy chair and professor of Stem Cell Transplantation and Cellular Therapy at MD Anderson. "The algorithms that we published are conservative, detailed, and will help us save lives as we move forward with these exciting but also more toxic therapies," Shpall said. The review covers wide-ranging research on CAR T therapies by many institutions and includes insights based on more than 100 patients treated at MD Anderson, Moffitt Cancer Center in Tampa, Sylvester Cancer Center at the University of Miami, and Mayo Clinic Ca...

A piece of the puzzle: Eight autism-related mutations in one gene

By studying data from thousands of genomes of people with autism-spectrum disorders, an interdisciplinary team of USC researchers homed in on a gene called TRIO. The TRIO gene produces a protein that influences the development and strength -- or weakness -- of the connections between brain cells. The scientists found eight autism-associated mutations clustered within a small region of the Trio protein. Changes in the protein's function early in a child's brain development can, like a wayward driver on a freeway, set off a chain reaction that hampers connections between brain cells and, consequently, hinder the brain's ability to store and process information. "I have never seen this number of autism-related mutations in such a small area," said Bruce Herring, the study's corresponding author and a neurobiologist at the USC Dornsife College of Letters, Arts and Sciences. "The likelihood that this number of mutations occurs by chance is 1 in 1.8 tril...

An interconnection between the nervous and immune system

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Stylized illustration of a newly-discovered signaling pathway, which sees the central nervous system use adrenal hormone manufacturing to doubtlessly disrupt the immune system in a manner that will result in extreme infections. Credit score: Harald Prüss A newly-discovered reflex arc mediates a course of which ends up in a disruption within the hormones secreted by the adrenal glands which, in flip, ends in an elevated susceptibility to bacterial infections. This analysis breaks new floor within the improvement of remedies to scale back the incidence of infections, and its outcomes have been revealed within the present problem of  Nature Neuroscience . Accidents to the mind or spinal twine, resembling these attributable to stroke or trauma, lead to a substantia...

Exposure to pet and pest allergens during infancy linked to reduced asthma risk

While previous studies have established that reducing allergen exposure in the home helps control established asthma, the new findings suggest that exposure to certain allergens early in life, before asthma develops, may have a preventive effect. The observations come from the ongoing Urban Environment and Childhood Asthma (URECA -- pronounced "Eureka") study, which is funded by NIH's National Institute of Allergy and Infectious Diseases (NIAID) through its I nner-City Asthma Consortium. "We are learning more and more about how the early-life environment can influence the development of certain health conditions," said NIAID Director Anthony S. Fauci, M.D. "If we can develop strategies to prevent asthma before it develops, we will help alleviate the burden this disease places on millions of people, as well as on their families and communities." According to the Centers for Disease Control and Prevention, more than 8 percent of children in the Uni...

Playing American football before age 12 could have long-term health effects

Researchers at Boston University School of Medicine, USA found that football players who started playing before age 12 had more than twice the odds for clinical impairment in executive function (including analyzing, planning, and organizing tasks), regulating their behavior, and apathy, compared to players who started playing at age 12 or later. They also had more than three times the odds for depression. The effects appear to apply to players of all ages and levels of education, no matter how long they had played for (duration) and whether they were professional or amateur players (level of play). Dr Robert Stern, the corresponding author of the study said: "Overall, our study provides further evidence that playing American football before age 12, and being hit in the head repeatedly through tackle football during a critical time of brain development, is associated with later-life problems with mood and behavior." This is the first study to show a relationship between...

New hosts for Chagas disease vectors identified

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Kissing bugs, just like the specimen proven on this picture, could also be contaminated with Trypanosoma cruzi, the parasite that causes Chagas illness. Credit score: UC Riverside Solitary weasel-like animals known as tayra would possibly look fairly innocent, however some may very well be incubators for a parasite that causes Chagas illness, a persistent, debilitating situation that's unfold by bugs known as kissing bugs and impacts greater than eight million folks worldwide. In a examine printed at this time within the journal  PeerJ , researchers from the College of California, Riverside have recognized a number of new hosts for parasite-spreading kissing bug species, together with tayras, new world monkeys, sloths, porcupines, and coatis -- that are the South Am...

Cell-based therapy success could be boosted by new antioxidant

Lab tests found that the human-made molecule -- a type of antioxidant -- helps to shield healthy cells from damage such as would be caused when they are transplanted into a patient during cell therapy. Such procedures are already used to treat people with blood disorders as well as to grow skin grafts for patients with severe burns. The newly tested compound is 10 times more effective at protecting cells from damage than the most powerful antioxidant found in nature, the study found. As many as 90 per cent of cells can be damaged or killed during the transplantation process . This can affect the likelihood of the treatment's success. Experts say that pre-treating cells before they are transplanted into patients could help to improve success rates of cell-based therapies. Researchers are seeking to develop such approaches to treat conditions including Parkinson's disease and multiple sclerosis. Scientists at the University of Edinburgh exposed cells to a toxic subs...

Key regulator of male fertility identifed

Researchers at Cincinnati Children's Hospital Medical Center report in  Genes & Development  identifying the key molecular and genetic switch that activates production of healthy male sperm -- but only when the time is right. The mechanism is a protein complex called Polycomb Repressive Complex 1 (PRC1). Researchers were surprised when they found that PRC1 activates specific germline genes and the production of healthy sperm. This is because when male mammals such as humans and mice are born, they come with all the reproductive germline cells (including inheritable genetics) needed to help make healthy fertile sperm and offspring. But the sperm isn't fertile during infancy or childhood. True to the "repressive" in its name, PRC1 also tamps down specific genes and the activation of fertile sperm production until an individual reaches reproductive age. Researchers show in their current study that when mice reach reproductive age, the PRC1 protein complex cha...

Contribution of opioid-related deaths to the change in life expectancy in the US

Deaths from drug poisoning more than doubled in the United States from 2000 to 2015; poisoning mortality involving opioids more than tripled. Increases in poisonings have been reported to have reduced life expectancy for non-Hispanic white individuals in the United States from 2000 to 2014. Deborah Dowell, M.D., M.P.H., of the Centers for Disease Control and Prevention, Atlanta, and colleagues estimated the number of deaths and death rates in 2000 and 2015 due to poisoning and the 12 leading causes of death in 2015 using the National Vital Statistics System Mortality file, based on death certificates registered in each state and the District of Columbia. Life expectancy at birth increased by 2 years overall, rising from 76.8 years in 2000 to 78.8 years in 2015. From 2000 to 2015, death rates related to heart disease, cancer, cerebrovascular diseases, diabetes, influenza and pneumonia, chronic lower respiratory diseases, and kidney disease decreased, together contributing a gain of...