Fight Aging! Newsletter, November 11th 2019
In conclusion, high-dose NR induces the onset of WAT dysfunction, which may in part explain the deterioration of metabolic health.
Towards a Rigorous Definition of Cellular Senescence
https://www.fightaging.org/archives/2019/11/towards-a-rigorous-definition-of-cellular-senescence/
The accumulation of lingering senescent cells is a significant cause of aging, disrupting tissue function and generating chronic inflammation throughout the body. Even while the first senolytic drugs capable of selectively destroying these cells already exist, and while a number of biotech companies are working on the producti...
Source: Fight Aging! - November 10, 2019 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Towards a Rigorous Definition of Cellular Senescence
The accumulation of lingering senescent cells is a significant cause of aging, disrupting tissue function and generating chronic inflammation throughout the body. Even while the first senolytic drugs capable of selectively destroying these cells already exist, and while a number of biotech companies are working on the production of rejuvenation therapies based on clearance of senescent cells, it is still the case that much remains to be settled when it comes to the biochemistry of these errant cells. More rigorous consensus definitions relating to the mechanisms, manifestations, and tissue specificity of senescence have ye...
Source: Fight Aging! - November 5, 2019 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Fight Aging! Newsletter, November 4th 2019
In this study, we hypothesized that moderately and chronically reducing ACh could attenuate the deleterious effects of aging on NMJs and skeletal muscles. To test this hypothesis, we analyzed NMJs and muscle fibers from heterozygous transgenic mice with reduced expression of the vesicular ACh transporter (VAChT), VKDHet mice, which present with approximately 30% less synaptic ACh compared to control mice.
Because ACh is constitutively decreased in VKDHet, we first analyzed developing NMJs and muscle fibers. We found no obvious morphological or molecular differences between NMJs and muscle fibers of VKDHet and contro...
Source: Fight Aging! - November 3, 2019 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Senescent Mesenchymal Stem Cells Contribute to Osteoarthritis
Cellular senescence is a significant contributing cause of osteoarthritis in old age, and senolytic therapies capable of selectively destroying senescent cells are presently undergoing clinical trials in osteoarthritic patients. Researchers here investigate a specific population of senescent cells, the supporting mesenchymal stem cells found in and around joint tissue, and establish that they are important in the progression of osteoarthritis.
Tissue accumulation of p16INK4a-positive senescent cells is associated with age-related disorders, such as osteoarthritis (OA). These cell-cycle arrested cells affect tissue...
Source: Fight Aging! - November 1, 2019 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Fight Aging! Newsletter, October 21st 2019
In this study, AT1-AAs were detected in the sera of patients with peripheral arterial disease (PAD) and the positive rate was 44.44% vs. 17.46% in non-PAD volunteers. In addition, analysis showed that AT1-AAs level was positively correlated with PAD. To reveal the causal relationship between AT1-AAs and vascular aging, an AT1-AAs-positive rat model was established by active immunization. The carotid pulse wave velocity was higher, and the aortic endothelium-dependent vasodilatation was attenuated significantly in the immunized rats. Morphological staining showed thickening of the aortic wall. Histological examination showe...
Source: Fight Aging! - October 20, 2019 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
A Mechanism for Mammalian Cartilage Regrowth is Discovered
A theme of recent years is the discovery of processes of regrowth that operate in mammalian tissues long thought to be non-regenerative. In this case, researchers have found a mechanism of regeneration that operates in cartilage, albeit not to the degree that would be helpful for recovery from more serious injury or the wear of aging. Still, where a mechanism exists at all, it should be possible to find ways to enhance its operation. This work is interesting for the resemblance that this regenerative process bears to the way in which salamanders regrow lost organ tissue. Finding ways to bring that sort of exceptional regen...
Source: Fight Aging! - October 16, 2019 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Harvard Health Ad Watch: A new treatment for knee arthritis
The TV ad promises pain relief for knee osteoarthritis, the source of most of the 600,000 knee replacement surgeries performed in the US each year. A man in a bowling alley winces with pain. He nearly falls as he rolls a ball into the gutter. (Did I mention the arrow sticking out of his knee?)
“Knee acting up again?” asks his buddy, clearly concerned. When pain pills don’t seem to help, his buddy suggests a procedure called Coolief for knee osteoarthritis.
“I had it done six months ago,” says the bowling buddy. “And the best part is that it lasts up to one year.”
What is Coolief?
Coolief is a procedure, not a...
Source: Harvard Health Blog - October 15, 2019 Category: Consumer Health News Authors: Robert H. Shmerling, MD Tags: Arthritis Bones and joints Osteoarthritis Pain Management Tests and procedures Source Type: blogs
Fight Aging! Newsletter, October 14th 2019
In conclusion, a polypharmacology approach of combining established, prolongevity drug inhibitors of specific nodes may be the most effective way to target the nutrient-sensing network to improve late-life health.
Deletion of p38α in Neurons Slows Neural Stem Cell Decline and Loss of Cognitive Function in Mice
https://www.fightaging.org/archives/2019/10/deletion-of-p38%ce%b1-in-neurons-slows-neural-stem-cell-decline-and-loss-of-cognitive-function-in-mice/
Researchers here provide evidence for p38α to be involved in the regulation of diminished neural stem cell activity with age. It is thought that the...
Source: Fight Aging! - October 13, 2019 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
The SENS Research Foundation on the Beneficial Nature of Senolytic Therapies
The SENS Research Foundation should need no introduction to this audience, but, just in case, this is one of the few non-profit organizations dedicated to advancing the state of the art in rejuvenation research and development. The focus of the SENS Research Foundation staff is on unblocking lines of research that are presently moving too slowly, rather than on reinforcing success. The co-founder, Aubrey de Grey, assembled the Strategies for Engineered Negligible Senescence (SENS) going on twenty years ago. It was, and is, a synthesis of what is known in the research community regarding the root causes of aging. In the SEN...
Source: Fight Aging! - October 9, 2019 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Part 2 - We Were Wrong 20 Years Ago, Our Current Response to the Opioid Crisis is Wrong, But We Should Still Be Helping Most of our Long-Term Patients Reduce Their Opioid Doses
by Drew Rosielle (@drosielle)This is the second in a series of several posts about many aspects of my current thinking about opioids.The first post is here:Part 1 – Introduction, General Disclaimers, Hand-Wringing, and a Hand-Crafted Graph.Over-prescribing fueled the current drug overdose epidemic, and many of us who thought we were stamping out needless suffering contributed to the epidemic.A lot of what I read and believed about opioids early on in my career was wrong.I ’m old enough to remember those heady days in which there was a pretty large and ‘successful’ movement in American medicine to greatly liberalize...
Source: Pallimed: A Hospice and Palliative Medicine Blog - October 3, 2019 Category: Palliative Care Tags: opioids pain rosielle The profession Source Type: blogs
Chronic Lyme arthritis: A mystery solved?
In 1975, researchers from Yale investigated an epidemic of 51 patients with arthritis who lived near the woodsy town of Lyme, Connecticut. The most common symptom was recurrent attacks of knee swelling. A few had pain in other joints, such as the wrist or ankle. Many had fever, fatigue, and headache. Some remembered a round skin rash before the onset of knee swelling.
We now know that Lyme disease is an infection acquired from tick bites, caused by a spiral bacterium named Borrelia burgdorferi. After a tick bite, Borrelia bacteria wriggle through the skin away from the bite site. This leads to a circular red rash, known as...
Source: Harvard Health Blog - October 3, 2019 Category: Consumer Health News Authors: John Ross, MD, FIDSA Tags: Arthritis Bones and joints Infectious diseases Source Type: blogs
Different Methods To Alleviate Joint Pain
Our body is flexible due the joints. These joints connect two bones, provide support and help in the body parts movement. Joint pain is a feeling of discomfort, aches and soreness in any of our body ’s joint. There have been lots of cases of people having aches in their joints. These joint pains are due to injuries affecting the ligaments, bursae, or tendons surrounding the joint. Pain in the joints is also due to infection and inflammation and in an extremely rare case because of cancer. It becomes extremely painful when you try to move your body parts suffering this pain.There are different conditions which are respons...
Source: radRounds - September 11, 2019 Category: Radiology Authors: Benny Smith Source Type: blogs
Fight Aging! Newsletter, September 9th 2019
We examined human lung tissue from COPD patients and normal control subjects, and found a substantial increase in p16-expressing alveolar cells in COPD patients. Using a transgenic mouse deficient for p16, we demonstrated that lungs of mice lacking p16 were structurally and functionally resistant to CS-induced emphysema due to activation of IGF1/Akt regenerative and protective signaling.
Fat Tissue Surrounds Skeletal Muscle to Accelerate Atrophy in Aging and Obesity
https://www.fightaging.org/archives/2019/09/fat-tissue-surrounds-skeletal-muscle-to-accelerate-atrophy-in-aging-and-obesity/
Researchers he...
Source: Fight Aging! - September 8, 2019 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Work on Senolytic Rejuvenation Therapies Begins to Attract More Mainstream Notice
This popular science piece on the development of senolytic therapies capable of clearing harmful senescent cells from aging tissues is a cut above the average. It is important to see more publicity for this line of work. Not because it will aid the industry, but because the more attention that is given to the field, the faster that existing senolytic treatments such as the dasatinib and quercetin combination will become available through off-label prescription and physician networks. Tens of millions of patients with inflammatory age-related diseases caused in part by senescent cells, and the many cancer survivors with hig...
Source: Fight Aging! - September 4, 2019 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
