Tag Archives: Studies

Cancer Studies: Vitamin D Limits Melanoma Growth By Boosting Effects Of Immunotherapy

From a Genetic Engineering & Biotechnology News release:

Vitamin D Tames Melanoma“But what’s really intriguing is that we can now see how vitamin D might help the immune system fight cancer. We know when the Wnt/beta-catenin pathway is active in melanoma, it can dampen down the immune response causing fewer immune cells to reach the inside of the tumor, where they could potentially fight the cancer better.

“Although vitamin D on its own won’t treat cancer, we could take insights from the way it works to boost the effects of immunotherapy, which uses the immune system to find and attack cancer cells.”

Genetic Engineerin & Biotechnology News

In melanoma patients, elevated serum levels of vitamin D appear to be helpful. Tumors are thinner. Outcomes are improved. But how, exactly, are these benefits realized? To answer this question, researchers at the University of Leeds scrutinized the interaction between vitamin D and the vitamin D receptor (VDR) on melanoma cells. The researchers, fully aware that vitamin D on its own won’t treat cancer, hoped to identify cell signaling pathways that could lead to new therapeutic strategies.

To read more: https://www.genengnews.com/news/vitamin-ds-melanoma-taming-ways-uncovered/

Health Studies: Chronic Inflammation Reduced By Exercise, Lowering Risk Of Cardiovascular Disease

From a Harvard news online release:

Massachusetts General Hospital“This study identifies a new molecular connection between exercise and inflammation that takes place in the bone marrow and highlights a previously unappreciated role of leptin in exercise-mediated cardiovascular protection,” said Michelle Olive, program officer at the National Heart, Lung, and Blood Institute Division of Cardiovascular Sciences. “This work adds a new piece to the puzzle of how sedentary lifestyles affect cardiovascular health and underscores the importance of following physical-activity guidelines.”

Scientists at Harvard-affiliated Massachusetts General Hospital (MGH) have identified a previously unknown biological pathway that promotes chronic inflammation and may help explain why sedentary people have an increased risk for heart disease and strokes.

In a study to be published in the November issue of Nature Medicine, MGH scientists and colleagues at several other institutions found that regular exercise blocks this pathway. This discovery could aid the development of new therapies to prevent cardiovascular disease.

To read more: https://news.harvard.edu/gazette/story/2019/11/exercise-found-to-block-chronic-inflammation-in-mice/

Science & Civilization: The Genetic History Of Roman Empire Revealed (Phys.Org)

From a Phys.org online article:

Roman EmpireThere was a massive shift in Roman residents’ ancestry, the researchers found, but that ancestry came primarily from the Eastern Mediterranean and Near East, possibly because of denser populations there relative to the Roman Empire’s western reaches in Europe and Africa.

The next several centuries were full of turmoil: the empire split in two, diseases decimated Rome’s population and a series of invasions befell the city. Those events left a mark on the city’s population, which shifted toward western European ancestry. Later, the rise and reign of the Holy Roman Empire brought an influx of central and northern European ancestry.

Scholars have been studying Rome for hundreds of years, but it still holds some secrets—for instance, relatively little is known about the ancestral origins of the city’s denizens. Now, an international team led by researchers from Stanford University, the University of Vienna and Sapienza University of Rome is filling in the gaps with a genetic history that shows just how much the Eternal City’s populace mirrored its sometimes tumultuous history.

To read more: https://phys.org/news/2019-11-genetic-history-rome.html

Science & Art: Jackson Pollock’s Drip Painting Style (And Genius) Avoided “Coiling Instability”

From PLOS One Journal online release:

Jackson Pollock Full Fathom Five 1947We conclude that Pollock avoided the appearance of the hydrodynamic instabilities, contrary to what was argued by previous studies. Pollock selected the physical properties of the paint to prevent filament fragmentation before deposition, and applied it while moving his hand sufficiently fast and at certain heights to avoid fluid filaments from coiling into themselves. An understanding of the physical conditions at which these patterns were created is important to further art research and it can be used as a tool in the authentication of paintings.

Jackson Pollock Painting TechniqueConsidered one of the most prominent American painters of the 20th century, the life and work of Jackson Pollock have been the subject of books, movies, and documentaries [13]. His paintings can be broadly categorized as being abstract-expressionist. Although his painting style evolved during his sometimes tormented life, the so-called ‘dripping’ technique is certainly the most widely recognized both by experts and the general public.

Jackson Pollock described the technique himself [4]. In summary, Pollock would lay a canvas horizontally and pour paint on top of it, in a controlled manner. To regulate the flow of paint, he either used an instrument (a stick, knife or a brush), poured it directly from a can and in some instances he also used a syringe. Viscous fluid filaments were produced and laid over the canvas while ‘rhythmically moving’ around it. It is believed that Pollock developed this technique strongly influenced by an experimental painting workshop, organized in New York by Mexican muralist David Alfaro Siqueiros in 1936 [5]. Interestingly, Siqueiros himself also developed the ‘accidental painting’ technique during this workshop, which was recently analyzed by Zetina et al. [6].

To read more: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0223706

Chronic Pain: Cornell To Study Behavioral Change (Physical Exercise), Non-Drug Treatments For Pain

From a Cornell University news release:

Weill Cornell Medicine“Another behavior change is physical exercise,” Pillemer said. “A paradox of pain is that exercise helps reduce it, but it’s difficult for people in pain to think about exercising. So they don’t exercise, they get more sedentary and the pain increases; it’s a vicious circle. So how do you get people to actually change their behavior?”

More than 100 million Americans suffer from chronic pain – outnumbering those affected by heart disease, diabetes and cancer combined.

To develop innovative approaches to pain management, a team of behavioral and social science researchers on Cornell’s Ithaca campus, clinical researchers at Weill Cornell Medicine and computer scientists at Cornell Tech has received a five-year, $3 million grant from the National Institute on Aging, part of the National Institutes of Health (NIH).

To read more: http://news.cornell.edu/stories/2019/10/nih-grant-will-fund-non-pharmacological-pain-research

Sleep Studies: Increase In Preventable Diseases Tied To Disrupted “Circadian Rhythms” (Harvard)

From a Sleep Review Magazine online article:

Nighttime EatingWhen people are awake during the night, their behaviors are often mismatched with their internal body clocks. This can lead to nighttime eating, which can influence the way the body processes sugar and could lead to a higher risk in diabetes. “What happens when food is eaten when you normally should be fasting?” Scheer asked the audience. “What happens is that your glucose tolerance goes out the window….So your glucose levels after a meal are much higher.” This can increase people’s risk for diabetes.

Frank Scheer, PhD, professor of medicine at Harvard Medical School and director of the medical chronobiology program at Brigham and Women’s Hospital in Boston, says disruption of the body’s circadian rhythms may be one major reason why more Americans are living with preventable diseases. During his keynote talk at the 2019 AAST annual meeting in St. Louis, he outlined how recent research supports the hypothesis that higher rates of shiftwork and other forms of nighttime disruption could be contributing to increased rates of obesity, diabetes, and other common ailments.

To read more: http://www.sleepreviewmag.com/2019/10/circadian-rhythm-disruption-increase-preventable-diseases/

Research: Older Adults’ Memory Benefits From High-Intensity Workouts (No Change W/ Moderate)

From a MedicalXpress.com online release:

largepreviewResearchers suggest that intensity is critical. Seniors who exercised using short, bursts of activity saw an improvement of up to 30 percent in   performance while participants who worked out moderately saw no improvement, on average.

Researchers at McMaster University who examine the impact of exercise on the brain have found that high-intensity workouts improve memory in older adults.

Studies: Surging Number Of Deaths From Heart Failure Tied To Aging Population, Obesity Rates

From a Wall Street Journal online article:

The rapid aging of the population, together with high rates of obesity and diabetes in all ages, are pushing both the rate and number of deaths from heart failure higher, the study said. Most deaths from heart failure occur in older Americans, but they are rising in adults under 65, too, the study showed.

Heart Failure Increase in Aging PopulationThe findings help explain why a decadeslong decline in the death rate from cardiovascular disease has slowed substantially since 2011 and started rising in middle-aged people, helping drive down U.S. life expectancy.

Deaths from heart failure, one of the nation’s biggest killers, are surging as the population ages and the health of younger generations worsens.

The death rate from the chronic, debilitating condition rose 20.7% between 2011 and 2017 and is likely to keep climbing sharply, according to a study published Wednesday in the journal JAMA Cardiology.

To read more: https://www.wsj.com/articles/heart-failure-deaths-rise-contributing-to-worsening-life-expectancy-11572411901

Dementia Studies: Healthy Sleep, Diet And Exercise Changes Boost Cognition

From a Wall Street Journal online article:

Alzheimer's & Dementia JournalMr. Chambers, a 48-year-old physical therapist in Jersey City, N.J., modified his sleep, diet and exercise routines. Eighteen months later, his performance on a battery of cognitive tests improved, particularly in areas like processing speed and executive function, such as decision-making and planning.

Most surprising, says Dr. Isaacson, is that the MCI patients who followed at least 60% of their recommendations showed cognitive improvement. However, MCI patients who followed less than 60% of the recommendations experienced cognitive declines similar to the control groups, he notes.

Mr. Chambers is among 154 patients in a study, published Wednesday in Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association, that doctors say shows encouraging results. Among healthy patients, people who made changes in nutrition and exercise showed cognitive improvements on average. People who were already experiencing some memory problems also showed cognitive improvement—if they followed at least 60% of the recommended changes.

To read actual study: https://els-jbs-prod-cdn.literatumonline.com/pb/assets/raw/Health%20Advance/journals/jalz/JALZ_2985-1572445934507.pdf?mod=article_inline

To read more: https://www.wsj.com/articles/the -link-between-diet-exercise-and-alzheimers-11572427802

 

Health Studies: Immune System Cells Rewire And Repair During Sleep

From a Sleep Review Magazine online release:

Sleep Review June July 2019The current study points to the role of norepinephrine, a neurotransmitter that signals arousal and stress in the central nervous system. This chemical is present in low levels in the brain while we sleep, but when production ramps up it arouses our nerve cells, causing us to wake up and become alert. The study showed that norepinephrine also acts on a specific receptor, the beta2 adrenergic receptor, which is expressed at high levels in microglia. When this chemical is present in the brain, the microglia slip into a sort of hibernation.

New research shows that immune cells called microglia—which play an important role in reorganizing the connections between nerve cells, fighting infections, and repairing damage—are primarily active during sleep.

The findings, which were conducted in mice and appear in the journal Nature Neuroscience, have implications for brain plasticity, diseases like autism spectrum disorders, schizophrenia, and dementia, which arise when the brain’s networks are not maintained properly, and the ability of the brain to fight off infection and repair the damage following a stroke or other traumatic injury.

To read more: http://www.sleepreviewmag.com/2019/10/during-sleep-immune-cells-rewire/?ref=cl-title