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Fight Aging! Newsletter, August 1st 2022
In this study, we used the recently released Infinium Mouse Methylation BeadChip to compare such epigenetic modifications in C57BL/6 (B6) and DBA/2J (DBA) mice. We observed marked differences in age-associated DNA methylation in these commonly used inbred mouse strains, indicating that epigenetic clocks for one strain cannot be simply applied to other strains without further verification. Interestingly, the CpGs with highest age-correlation were still overlapping in B6 and DBA mice and included the genes Hsf4, Prima1, Aspa, and Wnt3a. Furthermore, Hsf4, Aspa, and Wnt3a revealed highly significant age-associated DNA methyla...
Source: Fight Aging! - July 31, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, July 18th 2022
In conclusion, we show that PVS morphology in mice is variable and that the structure and function of pia suggests a previously unrecognized role in regulating CSF transport and amyloid clearance in aging and disease.
Reversing Ovarian Fibrosis in Mice
https://www.fightaging.org/archives/2022/07/reversing-ovarian-fibrosis-in-mice/
Researchers here provide evidence for ovarian fibrosis to be an important mechanism in limiting the age at which female mammals can remain fertile. Interestingly, existing antifibrotic drugs can produce some reversal of this fibrosis, enough to restore ovulation in mice. Fibros...
Source: Fight Aging! - July 17, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Discussing the Accelerated Aging of Cancer Survivors
It is well known that cancer survivors who underwent chemotherapy or radiotherapy exhibit a shorter life expectancy, greater chance of unrelated cancer incidence, and greater risk of age-related disease. The most reasonable hypothesis at present is that these undesirable outcomes are the result of an increased burden of senescent cells. Historically, cancer treatments have been in large part designed to force cancerous cells into senescence, those that are not killed outright by the therapy. Since these cancer therapies are toxic to cells, they also tend to cause off-target cell death and senescence. It is possible that si...
Source: Fight Aging! - July 12, 2022 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, July 11th 2022
In this study we employ a transcriptome-wide and multi-tissue approach to analyze the influence of both LTDR and short-term DR (STDR) at old age on the aging phenotype. We were able to characterize a common transcriptional gene network driving inflammaging in most of the analyzed tissues. This network is characterized by chromatin opening and upregulation in the transcription of innate immune system receptors and by activation of interferon signaling through interferon regulatory factors, inflammatory cytokines, and Stat1-mediated transcription. We also found that both DR interventions ameliorate this inflammaging phenotyp...
Source: Fight Aging! - July 10, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Cancer Survivors Exhibit a Significantly Higher Risk of Cardiovascular Disease
The dominant cancer therapies of chemotherapy and radiotherapy have not yet been replaced by immunotherapies for more than a handful of cancer types. These classes of therapy produce a significantly increased burden of senescent cells in patients; one of the goals of cancer therapy is to drive cancerous cells into senescence, those that cannot be killed. These additional senescent cells in turn accelerate the progression of degenerative aging. The advent of senolytic therapies to clear senescent cells from aged tissues will make a sizable difference to these patients. More effort should be undertaken today to enable patien...
Source: Fight Aging! - July 4, 2022 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Fight Aging! Newsletter, June 13th 2022
In conclusion, long-term cumulative BP was associated with subsequent cognitive decline, dementia risk, and all-cause mortality in cognitively healthy adults aged ≥50 years. Efforts are required to control long-term systolic BP and pulse pressure and to maintain adequate diastolic BP.
Longer-Lived Mammals Tend to Have Lower Expression of Inflammation-Related Genes
https://www.fightaging.org/archives/2022/06/longer-lived-mammals-tend-to-have-lower-expression-of-inflammation-related-genes/
Researchers here make a few interesting observations on gene expression data from a range of mammalian species with ...
Source: Fight Aging! - June 12, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
How patient education can save lives
A patient undergoing chemotherapy for breast cancer was diagnosed on April 20th with profound secondary adrenal insufficiency (hypophysitis: ACTH undetectable, cortisol 0.2) caused by immunotherapy (pembrolizumab). She was started on corticosteroids and sent home from the hospital on April 24th with a prescription for only five days of prednisone. After completing the five days ofRead more …How patient education can save lives originally appeared inKevinMD.com.
Source: Kevin, M.D. - Medical Weblog - June 4, 2022 Category: General Medicine Authors: < span itemprop="author" > < a href="https://www.kevinmd.com/post-author/david-m-mitchell" rel="tag" data-wpel-link="internal" > David M. Mitchell, MD, PhD < /a > < /span > Tags: Conditions Endocrinology Hospital-Based Medicine Source Type: blogs
Fight Aging! Newsletter, May 30th 2022
In conclusion, fisetin supplementation may be a novel strategy to target excess cellular senescence and thereby reduce mitochondrial ROS to improve NO-mediated endothelial function with aging.
Exercise Upregulates BDNF Expression to Promote Dopamine Release and Brain Function
https://www.fightaging.org/archives/2022/05/exercise-upregulates-bdnf-expression-to-promote-dopamine-release-and-brain-function/
Researchers have in the past shown that exercise results in greater amounts of BDNF, which in turn promotes neurogenesis. Here, this line of research is extended to show that exercise results in an increas...
Source: Fight Aging! - May 29, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, May 23rd 2022
In conclusion, remofuscin activates the lysosome-to-nucleus pathway in C. elegans, thereby increasing the expression levels of xenobiotic detoxification genes resulted in extending their lifespan.
Naked Mole-Rat Skin Shows Fewer Signs of Aging
https://www.fightaging.org/archives/2022/05/naked-mole-rat-skin-shows-fewer-signs-of-aging/
Naked mole-rats exhibit a maximum life span that is many times longer than is the case for similarly sized mammals. Further, they are negligibly senescent, showing few age-related declines in function across much of that lengthy life span. That includes maintenance of stem c...
Source: Fight Aging! - May 22, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, May 2nd 2022
In this study, we tested the therapeutic potential of VHHASC and a newly generated VHH against murine ASC (VHHmASC) to target ASC specks in vitro and in vivo. We show that pre-incubation of extracellular ASC specks with VHHASC abrogated their inflammatory functions in vitro. Recombinant VHHASC rapidly disassembled pre-formed ASC specks and thus inhibited their ability to seed the nucleation of soluble ASC. Notably, VHHASC required prior cytosolic access to prevent inflammasome activation within cells, but it was effective against extracellular ASC specks released following caspase-1-dependent loss of membrane integrity, an...
Source: Fight Aging! - May 1, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
An Outline of Present Work on Partial Reprogramming as a Rejuvenation Therapy
Here I'll point out a good, lengthy introduction to the ongoing, suddenly very well funded work on partial reprogramming as the basis for rejuvenation therapies. Reprogramming somatic cells to induced pluripotent stem cells requires exposure to the Yamanaka factors, but is a lengthy process with low efficiency. Early in that process, epigenetic patterns in a cell are restored to a more youthful configuration without the loss of differentiated somatic cell state, and this is the goal that partial reprogramming aims to achieve: restore mitochondrial function and many other cell activities in old tissues without changing cell...
Source: Fight Aging! - April 25, 2022 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Spherical Nucleic Acid Vaccine Uses Structural Design to Improve Efficacy
A team at Northwestern University created a new type of nanoparticle-based vaccine that employs structure-function relationships during the design phase to maximize efficacy. Called a spherical nucleic acid (SNA) vaccine, the technology consists of g...
Source: Medgadget - April 4, 2022 Category: Medical Devices Authors: Conn Hastings Tags: Medicine Nanomedicine Public Health Source Type: blogs
Cell-Loaded Beads Release Cytokines to Eradicate Tumors
In this study, we demonstrated that the ‘drug factories’ allow regulatable local administration of interleukin-2 and eradication of tumor in several mouse models, which is very exciting. This provides a strong rationale for clinical testi...
Source: Medgadget - March 21, 2022 Category: Medical Devices Authors: Conn Hastings Tags: Medicine Oncology Source Type: blogs
Fight Aging! Newsletter, March 14th 2022
This study tests the feasibility of chronically elevating skeletal muscle NAD+ in mice and investigates the putative effects on mitochondrial respiratory capacity, insulin sensitivity, and gene expression. The metabolic effects of NR and PT treatment were modest. We conclude that the chronic elevation of skeletal muscle NAD+ by the intravenous injection of NR is possible but does not affect muscle respiratory capacity or insulin sensitivity in either sedentary or physically active mice. Our data have implications for NAD+ precursor supplementation regimens.
Muscle Strengthening Activities in Later Life Correlate ...
Source: Fight Aging! - March 13, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Many Mediocre Cancer Therapies Become Much Better When More Targeted to Cancerous Tissues
One of the important areas of cancer research and development that appears to receive a great deal of attention and funding, but in practice seems slow to make it from the laboratory to the clinic, is the targeting of therapeutics to cancerous cells. Reductio ad absurdum, near any of dozens of existing chemotherapeutics would do the job of completely clearing tumors, with minimal to no side-effects, if one could only find a way to delivery tiny amounts of the therapeutic to every cancer cell while avoiding every healthy cell. The inability to target treatments this effectively is exactly why cancer remains such a problem. ...
Source: Fight Aging! - March 9, 2022 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
