Oleic acid, a key to activating the brain’s ‘fountain of youth’
Baylor College of Medicine, March 22, 2022
Many people dread experiencing the cognitive and mood declines that often accompany reaching an advanced age, including memory disorders such as Alzheimer’s disease and mood conditions like depression. While searching for new ways to prevent or treat these and other related conditions, a team at Baylor College of Medicine and the Jan and Dan Duncan Neurological Research ...
Oleic acid, a key to activating the brain’s ‘fountain of youth’
Baylor College of Medicine, March 22, 2022
Many people dread experiencing the cognitive and mood declines that often accompany reaching an advanced age, including memory disorders such as Alzheimer’s disease and mood conditions like depression. While searching for new ways to prevent or treat these and other related conditions, a team at Baylor College of Medicine and the Jan and Dan Duncan Neurological Research Institute (Duncan NRI) at Texas Children’s Hospital identified a missing piece of the puzzle of how memory and mood are sustained and regulated in the brain. Their study, published in the Proceedings of the National Academy of Sciences, reveals that oleic acid produced in the brain is an essential regulator of the process that enables learning and memory and supports proper mood regulation. The finding has paved the path to discovering potential new therapeutic strategies to counteract cognitive and mood decline in patients with neurological disorders.
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Chemical found in leafy greens shown to slow growth of COVID-19 and common cold viruses
Johns Hopkins University School of Medicine, March 23, 2022
Researchers at Johns Hopkins Children's Center report evidence from lab experiments that a chemical derived from a compound found abundantly in broccoli and other cruciferous plants may offer a potentially new and potent weapon against the viruses that cause COVID-19 and the common cold. In a study described March 18 in the journal Communications Biology, the scientists showed that sulforaphane, a plant-derived chemical, known as a phytochemical, already found to have anti-cancer effects, can inhibit the replication of SARS-CoV-2, the coronavirus that causes COVID-19, and another human coronavirus in cells and mice. Sulforaphane's natural precursor is particularly abundant in broccoli, cabbage, kale and Brussels sprouts. First identified as a "chemopreventive" compound by a team of Johns Hopkins scientists decades ago, natural sulforaphane is derived from common food sources, such as broccoli seeds, sprouts and mature plants, as well as infusions of sprouts or seeds for drinking. Previous studies, including those at Johns Hopkins Medicine, have shown sulforaphane to have cancer and infection-prevention properties by way of interfering with certain cellular processes.
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New clues about how a high-salt diet contributes to cardiometabolic diseases found deep in the brain
Medical College of Georgia and Georgia State University, March 22, 2022
Deep in the brain a group of large neurons produce a hormone which prompts our bodies to hold onto more fluid and increase blood pressure. Scientists say these neurons play a critical role in enabling our bodies to maintain healthy homeostasis by using this skill set to efficiently eliminate the excessive salt we consume in an unhealthy meal. But scientists at the Medical College of Georgia and Georgia State University also say that the chronic high-salt diet most Americans consume can turn this system against us, resulting in hyperactivity of these neurons, continuing production of this hormone vasopressin, constriction of blood vessels and increasing our risk for common cardiometabolic diseases like high blood pressure and heart disease. They are finding that salt loading increases the firing of vasopressin-producing neurons, increases constriction of blood vessels and decreases local blood flow. More typically when neurons become active, blood flow to them increases, in a process called neurovascular coupling. This helps ensure working neurons have the adequate oxygen and nutrients needed to sustain increased activity.
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Vitamin D may keep low-grade prostate cancer from becoming aggressive
University of South Carolina, March 22, 2022
In cases of low-grade prostate cancer, many urologists do not treat the disease, but instead do what's called "active surveillance. The cure—meaning surgery or radiation—is probably worse than the disease, so they wait a year and then do another biopsy to see where the patient stands. However, knowing that they have even low-grade prostate cancer can cause patients and their families excessive anxiety, which prompts some of the men to undergo an elective prostatectomy, despite the risk of complications such as infection, urinary incontinence and erectile dysfunction.
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How sugar promotes inflammation
University of Wurzburg (Germany), March 22, 2022
People who consume sugar and other carbohydrates in excess over a long period of time have an increased risk of developing an autoimmune disease. In affected patients, the immune system attacks the body's own tissue and the consequences are, for example, chronic inflammatory bowel diseases such as Crohn's disease and ulcerative colitis, type 1 diabetes and chronic inflammation of the thyroid gland. The underlying molecular mechanisms that promote autoimmune diseases are multilayered and complex. Now, scientists at the Julius Maximilians University of Würzburg (JMU) have succeeded in deciphering new details of these processes. Their work support the notion that excessive consumption of glucose directly promotes the pathogenic functions of certain cells of the immune system and that, conversely, that a calorie-reduced diet can have a beneficial effect on immune diseases. In their study, the scientists focused on a group of cells of the immune system that have not been known for very long: T helper cells of type 17, also called Th17 lymphocytes, which play an important role in regulating (auto-) inflammatory processes.
