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Fight Aging! Newsletter, June 6th 2022
This study examines evidence suggesting that mitochondrial dysfunction plays a significant early impact on AD pathology.
Although mitochondrial dysfunction is a typical indication of Alzheimer's disease, it is unclear whether the cellular systems that maintain mitochondrial integrity malfunction, aggravating mitochondrial pathology. Different levels of vigilance and preventive methods are used to reduce mitochondrial damage and efficiently destroy faulty mitochondria to maintain the mitochondrial equilibrium. The form and function of mitochondria are regulated by mitochondrial fusion and fission. In contrast, mitoch...
Source: Fight Aging! - June 5, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Navitoclax is Better than Dasatinib and Quercetin at Clearing Senescent Cells Produced by Radiotherapy
It is now well known that many of the negative consequences resulting from chemotherapy and radiotherapy are mediated by a raised burden of senescent cells. One of the goals of cancer therapy is to drive cancerous cells into senescence: better to have senescent cells than cancerous cells! Nonetheless, gaining a greater burden of senescent cells is literally accelerated aging, as these additional senescent cells actively degrade tissue function and create chronic inflammation via their secretions. Thus senolytic therapies should be of great benefit to cancer survivors, removing this harmful side-effect of cancer therapy.
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Source: Fight Aging! - May 30, 2022 Category: Research Authors: Reason Tags: Medicine, Biotech, Research 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
Reviewing What is Known of Alternative Lengthening of Telomeres
All cancerous cells must lengthen their telomeres in order to continue unfettered, harmful replication. Telomeres are repeated DNA sequences at the ends of chromosomes. A little telomere length is lost with each cell division, and cells with short telomeres following repeated replication become senescent or self-destruct. This is how the Hayflick limit on somatic cell replication is enforced. Unlike somatic cells, stem cells are privileged, and use telomerase to lengthen telomeres in order to produce daughter somatic cells via replication throughout life. Cancer cells, on the other hand, use either telomerase (~90% of canc...
Source: Fight Aging! - May 25, 2022 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Advanced Multi-Organ Chip for Personalized Medicine
Researchers at Columbia University School of Engineering and Applied Science developed an advanced organ-on-a-chip system that incorporates heart, bone, liver, and skin tissue in independent niches that are linked with simulated vascular flows. The s...
Source: Medgadget - May 11, 2022 Category: Medical Devices Authors: Conn Hastings Tags: Genetics Materials Medicine Oncology Pathology columbia columbiauniversity organonchip 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
Mcl-1 Inhibitors as a Novel Class of Senolytic
Researchers working with prostate cancer cells here show that senescent cancer cells depend upon Mcl-1 to prevent programmed cell death, a novel target with existing drugs that may prove useful as general purpose senolytics, able to clear senescent cells from tissues. Cancers are highly varied, and this would have to be tested against the more usual types of senescent cell present in the aged body. Even if only applicable in the context of some cancers, however, this is still a useful discovery. Cancer survivors have a significantly reduced life expectancy in large part because they suffer a greatly increased burden of cel...
Source: Fight Aging! - April 29, 2022 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Excitable Nanoparticles Destroy Endometriosis Lesions
Researchers at Oregon State University developed a nanoparticle system that can aid with the removal of endometrial lesions in a minimally invasive fashion. In endometriosis, endometrial tissue grows outside of the uterus, causing pain and affecting ...
Source: Medgadget - April 25, 2022 Category: Medical Devices Authors: Conn Hastings Tags: Nanomedicine Ob/Gyn Radiology OregonState Source Type: blogs
Fight Aging! Newsletter, April 18th 2022
In conclusion, our results suggest that SAH extends lifespan by inducing MetR or mimicking its downstream effects. Since the lifespan-extending effects of SAH are conserved in yeast and nematodes, and MetR extends the lifespan of many species, exposure to SAH is expected to have multiple benefits across evolutionary boundaries. Our findings offer the enticing possibility that in humans the benefits of a MetR diet can be achieved by promoting Met reduction with SAH. The use of endogenous metabolites, such as SAH, is considered safer than drugs and other substances, suggesting that it may be one of the most feasible ways to ...
Source: Fight Aging! - April 17, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
An Enhanced Natural Killer Cell Therapy Clears Senescent Cells in Mice
A growing burden of senescent cells in tissues throughout the body is an important contributing cause of degenerative aging. These cells secrete pro-growth, pro-inflammatory signals that, when maintained for the long term, are highly disruptive of cell and tissue function. Cellular senescence is an important contributing cause in many age-related conditions. Senescent cells are created constantly throughout life, and the immune system is responsible for removing those that fail to destroy themselves. Unfortunately, it becomes worse at this task with age.
Natural killer cells are one of the immune cell populations in...
Source: Fight Aging! - April 12, 2022 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Optical Therapy Leads to Cancer Apoptosis
Researchers at Okayama University in Japan developed a novel technique to induce cancer cell apoptosis using light. The technology involves modifying the cells to express a light-sensitive protein that rapidly pumps hydrogen ions out of the cell when...
Source: Medgadget - April 5, 2022 Category: Medical Devices Authors: Conn Hastings Tags: 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
Fight Aging! Newsletter, February 14th 2022
In conclusion, this first examination of the effects of age and the ageing process on the small intestinal microbiome demonstrates that the duodenal microbiome changes with increasing age, with significant decreases in duodenal microbial diversity due to increased prevalence of phylum Proteobacteria, particularly coliforms and anaerobic taxa. Given the key roles of small intestinal microbes in nutrient absorption and host metabolism, these changes may be clinically relevant for human health during the ageing process.
Naked Mole Rats Exhibit Minimal Cardiac Aging
https://www.fightaging.org/archives/2022/02/naked...
Source: Fight Aging! - February 13, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Early CAR-T Therapies Produced Long Term Remission in Some Cases
Much of what we'd like to know about cancer therapies takes a long time to emerge. Only now is the long term data available for the first CAR-T immunotherapies aimed at forms of leukemia in which cancerous cells are clearly and distinctly marked by characteristic surface features. The field has long since expanded, and researchers are at present trying to adjust CAR-T in order to apply this form of treatment to solid cancers. Long term remission is not the same as a cure, as cancer is a disease in which it remains challenging to say whether or not a few remnant cancer cells await a return at some future time. If one can ma...
Source: Fight Aging! - February 10, 2022 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
