Ultraviolet (UV) light exposure – from the sun or tanning beds – causes premature skin aging, a process called photoaging. But a new study in mice found that supplemental collagen, which is rich in the glycine-proline dipeptide, protects against the damaging effects of UV light exposure. Mice that received collagen during regular exposure to UV light had fewer wrinkles and other signs of photoaging than those that didn't. Researchers exposed young mice to one of four treatments for 12 weeks: UV light only; UV light plus low-dose collagen (300 milligrams per kilogram); UV light plus high-dose ... aging skin supplements
Read moreSurgery and anesthesia may contribute to cognitive impairment. Anesthesia, a medical treatment that involves the use of anesthetic drugs, is a widely accepted strategy for managing pain during surgery. Evidence suggests that mice that have undergone surgery that involved anesthetic treatment exhibited signs of postoperative cognitive impairment (https://pubs.asahq.org/anesthesiology/article/106/3/436/7602/Postoperative-Impairment-of-Cognitive-Function-in). Findings from a 2017 study suggest that surgery in combination with the anesthetic drug isoflurane induces blood-brain barrier dysfunction... brain dementia blood-brain barrier il-6
Read moreFrom the article: > In the current study, the scientists trained mice to run on a treadmill for one hour per day, five days per week, for two weeks. After the animals were exposed to toxic bright light -- a commonly used model of retinal degeneration -- they exercised for two more weeks. The exercised animals lost only half the number of photoreceptor cells as animals that spent the equivalent amount of time on a stationary treadmill. > Additionally, the retinal cells of exercised mice were more responsive to light and had higher levels of a growth- and health-promoting protein called br... aging eyes aerobic bdnf
Read morePost-workout ice baths and increased dietary protein intake have long been used by athletes as strategies to build muscle. Findings from a new study suggest that ice baths may hinder muscle protein synthesis by interfering with dietary protein uptake into muscles. The study participants included 12 healthy young men who engaged in a single resistance‐type exercise session and then immersed both their legs in water for 20 minutes. One leg was immersed in cold water (8°C, 46°F) while the other leg was immersed in water that was slightly warmer than room temperature (30°C, 86°F). Afterward, the ... muscle cold stress protein
Read moreDr. Jari Laukkanen discusses the role of heat stress in the prevention of cardiovascular & Alzheimer’s disease. ... heat stress alzheimer's aging heart disease podcast video blood pressure protein aerobic cardiovascular
Watch nowMice were fed diets of skeletal muscle meat from young and old farmed red deer (3 years old versus 25). The diet consisting of meat from old deer shortened the lifespan of female mice by 10%. The lifespan of male mice was shortened but was not statistically significant. The researcher thinks this is because he did not have a large enough sample size of male mice. Also, the mice were fed a normal diet until 1 year of age (basically middle age for mice) then were shifted to the meat from old vs. young deer. There may be a stronger effect if they were fed the meat from birth. The same thing was f... diet aging protein
Read moreResearchers injected clumps of the protein alpha-synuclein into mice’s stomachs and intestines. Days later the mice had aggregates of alpha-synuclein in their intestines that had spread via the vagus nerve to the brain. Months later their brains had many alpha-synuclein aggregates in their brains that negatively affected their motor function. This is not the first study to link the gut to Parkinson's disease. Other studies have found that cells located in the intestine spark an immune response that protects nerve cells and neurons against damage connected with Parkinson's disease. ... brain parkinson's gut immune system neurons protein
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