Intense Training Disturbs Tendon Homeostasis, Leads to Injury

Michael Kjaer, MD, PhD, of Copenhagen University and Bispebjerg Hospital in Denmark, will discuss the effects of exercise and sedentary behavior on tendon loading and collagen turnover. “The collagen turnover in tendon can be up- and down-regulated with exercise or inactivity, respectively, and specific parts of the tendon are responsible for this loading-induced collagen dynamics. Long-term overuse of tendon (e.g., intense training) results in disturbed homeostasis and swelling of the tendon, excess angiogenesis and upregulated formation of collagen,” Kjaer wrote.

Compounds in Active Muscles May Help Slow Lung Cancer Growth

Lung cancer is one of the most common cancers in the U.S. and accounts for roughly 25% of all cancer deaths. Patrick Ryan, MS, from Texas A&M University, and his research team found that treating cultured lung cancer cells with blood collected from contracting muscles—muscles that were exercised—did not grow as much as untreated cells.

Moderate-pace Walking Shrunk Pancreatic Cancer Tumors and Increased Cancer-killing Cells, Small Study Shows

Emily LaVoy, PhD, of the University of Houston, and colleagues explored the effects of moderate-intensity exercise on a mouse model of pancreatic cancer. Pancreatic cancer can be a particularly dangerous form of cancer because it is often diagnosed in later stages and spreads quickly. Though the trial sample was small—thus warranting further study—the results were optimistic.

Regular Exercise May Protect Cardiovascular Cells during Chemotherapy

Marie Mclaughlin, MSc, from Edinburgh Napier University in Scotland, will present research on human endothelial cells treated with FEC-T, a chemotherapy regimen that combines four drugs (5 fluorouracil, epirubicin, cyclophosphamide and docetaxel). The researchers found that preconditioning the endothelial cells with serum (blood) from people who habitually exercise caused less cell death than samples that were treated with untrained serum (people who exercised less than 75 minutes per week). “Exercise preconditioning can provide protection against these detrimental effects in vitro,” Mclaughlin explained.

Circadian Clock Regulates Body’s Collagen Production

Researchers featured in the “Homeostasis and adaptation of tendons to exercise” symposium—presented this week virtually at the American Physiological Society (APS) Integrative Physiology of Exercise conference—will discuss how exercise, inactivity and the body’s internal clock drive structural changes to tendons and their supportive tissues.

Exercise May Improve Effects of Radiation Therapy in Prostate Cancer

Cancer is the second leading cause of death around the world after heart disease. This week, researchers exploring the effects of exercise as a natural preventive tool and noninvasive treatment for cancer will present their work at the American Physiological Society (APS) Integrative Physiology of Exercise conference.

Researchers Explore How Exercise Influences Tendon Inflammation

Stephanie Dakin, PhD, BVetMed, from the University of Oxford in the U.K., studied the microscopic characteristics of tendons in people with exercise-related tendinopathy. Tendinopathy is a tendon disorder that causes pain, inflammation and limited function of the affected joint. Her research team found an increased number of blood vessels and cells—suggestive of inflammatory response—in the injured tendon samples when compared with healthy tissue.

Blocking a Hormone’s Action in Immune Cells May Reduce Heart Disease Risk

Blocking the mineralocorticoid receptor (MR)—a protein that helps maintain normal levels of salt and water in the body—in immune cells may help reduce the risk of heart attack and stroke by improving blood vessel health. The study will be presented today at the American Physiological Society (APS) Aldosterone and ENaC in Health and Disease: The Kidney and Beyond Conference in Estes Park, Colo.

Short-term Probiotics Regimen May Help Treat Gout, Kidney Disease

New research suggests that an individualized probiotic therapy regimen may improve symptoms of gout, gout-related kidney disease and other signs of metabolic syndrome. The study will be presented today at the American Physiological Society (APS) Aldosterone and ENaC in Health and Disease: The Kidney and Beyond Conference in Estes Park, Colo.

Researchers to Discuss Hormonal and Sodium-related Factors of Cardiovascular Disease at APS Conference

International physiologists and researchers studying the kidney, high blood pressure and related medical conditions will convene next week at the American Physiological Society (APS) Aldosterone and ENaC in Health and Disease: The Kidney and Beyond Conference in Estes Park, Colo.