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Clearance of Senescent Cells Reverses the Peripheral Neuropathy Caused by Chemotherapy
A primary goal of chemotherapy is to force cancerous cells into programmed cell death or cellular senescence. Cellular senescence is a state of growth arrest that should normally be triggered by exactly the sort of damage and dysfunction exhibited by cancer cells, but cancer is characterized by a mutation-induced ability to bypass those restrictions. Chemotherapy remains the primary approach to cancer therapy, but chemotherapeutic agents are still at best only marginally discriminating. Treating cancer with chemotherapy has always been a fine balance between harming the cancer and harming the patient. Even in the best of o...
Source: Fight Aging! - September 14, 2020 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, August 31st 2020
Fight Aging! publishes news and commentary relevant to the goal of ending all age-related disease, to be achieved by bringing the mechanisms of aging under the control of modern medicine. This weekly newsletter is sent to thousands of interested subscribers. To subscribe or unsubscribe from the newsletter,
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https://www.fightaging.org/newsletter/
Longevity Industry Consulting Services
Reason, the founder of Fight Aging! and Repair Biotechnologies, offers strategic consulting services to investors, entrepreneurs, and others interested in the longevity industry and its complexities. To find out m...
Source: Fight Aging! - August 30, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, August 24th 2020
We report that electrical stimulation (ES) stimulation of post-stroke aged rats led to an improved functional recovery of spatial long-term memory (T-maze), but not on the rotating pole or the inclined plane, both tests requiring complex sensorimotor skills. Surprisingly, ES had a detrimental effect on the asymmetric sensorimotor deficit.
Histologically, there was a robust increase in the number of doublecortin-positive cells in the dentate gyrus and SVZ of the infarcted hemisphere and the presence of a considerable number of neurons expressing tubulin beta III in the infarcted area. Among the genes that were unique...
Source: Fight Aging! - August 23, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
The Public Cannot Distinguish Between Scientific versus Unscientific, Likely Good versus Likely Bad Approaches to Longevity
One of the challenges inherent in patient advocacy for greater human longevity, for more research into aging and rejuvenation, is that journalists and the public at large either cannot or will not put in the effort needed to distinguish between: (a) scientific, plausible, and likely useful projects, those with a good expectation of addressing aging to a meaningful degree; (b) scientific, plausible, and likely unhelpful projects, those that will do little to move the needle on life expectancy, and (c) products and programs that consist of marketing, lies, and little else. This last category is depressingly large, and the fi...
Source: Fight Aging! - August 20, 2020 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, August 17th 2020
In this study, we sought to elucidate the role of VRK-1 in regulation of adult life span in C. elegans. We found that overexpression of VRK-1::GFP (green fluorescent protein), which was detected in the nuclei of cells in multiple somatic tissues, including the intestine, increased life span. Conversely, genetic inhibition of vrk-1 decreased life span. We further showed that vrk-1 was essential for the increased life span of mitochondrial respiratory mutants. We demonstrated that VRK-1 was responsible for increasing the level of active and phosphorylated form of AMPK, thus promoting longevity.
A Fisetin Variant, C...
Source: Fight Aging! - August 16, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Telomerase Gene Therapy May Treat Fibrosis via a Reduced Burden of Cellular Senescence
A number of research groups are quite enthusiastic about the prospects for telomerase gene therapy as a treatment for aging and numerous age-related diseases. This is based on more than a decade of work in mice, showing extended life spans and improved metabolism. Over the past few years, reversal of fibrosis via telomerase gene therapy has been demonstrated in mice. The evidence for this to be an approach worth bringing to the clinic continues to accumulate. Fibrosis is a disruption of tissue maintenance, associated with chronic inflammation, in which an inappropriate deposition of scar-like collagen takes place, degradin...
Source: Fight Aging! - August 11, 2020 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Nanoparticles for Large Gene Therapy to Cure Common Eye Diseases
Wet age-related macular degeneration and a number of other eye diseases, including congenital conditions, are related to mutated genes that result in blood vessel abnormalities. These can be treated with gene therapy, but delivering genetic material ...
Source: Medgadget - July 9, 2020 Category: Medical Devices Authors: Medgadget Editors Tags: Genetics Nanomedicine Ophthalmology Source Type: blogs
Fight Aging! Newsletter, June 15th 2020
In this study, we used markers to monitor the formation of SGs in Caenorhabditis elegans. We found that, in addition to acute heat stress, SG formation could also be triggered by dietary changes, such as starvation and dietary restriction (DR). We found that HSF-1 is required for the SG formation in response to acute heat shock and starvation but not DR, whereas the AMPK-eEF2K signaling is required for starvation and DR-induced SG formation but not heat shock. Moreover, our data suggest that this AMPK-eEF2K pathway-mediated SG formation is required for lifespan extension by DR, but dispensable for the longevity by reduced ...
Source: Fight Aging! - June 14, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, May 25th 2020
In conclusion, our results suggest a previously unknown mechanism whereby the canonical NF-κB cascade and a mitochondrial fission pathway interdependently regulate endothelial inflammation.
Lin28 as a Target for Nerve Regeneration
https://www.fightaging.org/archives/2020/05/lin28-as-a-target-for-nerve-regeneration/
Researchers here show that the gene Lin28 regulates axon regrowth. In mice, raised levels of Lin28 produce greater regeneration of nerve injuries. Past research has investigated Lin28 from the standpoint of producing a more general improvement in regenerative capacity. It improves mitochondri...
Source: Fight Aging! - May 24, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, May 11th 2020
In this study, we found that older nematodes have higher ROS levels. Interestingly, after hydrogen treatment, the ROS levels were significantly decreased, and hydrogen could significantly extend the lifespans of the N2, sod-3 and sod-5 mutant strains, by approximately 22.7%, 9.5%, and 8.7%, respectively.
In addition, aging is regulated by a variety of pathways, such as the insulin signaling pathway, the rapamycin target signaling pathway, and the caloric restriction pathway. However, our results showed that the lifespans of the daf-2 and daf-16 strains, in which these pathways are upregulated, were not affected afte...
Source: Fight Aging! - May 10, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, April 27th 2020
In conclusion, our study demonstrated that Nrf2 deficiency promoted the increasing trend of autophagy during aging in skeletal muscle. Nrf2 deficiency and increasing age may cause excessive autophagy in skeletal muscle, which can be a potential mechanism for the development of sarcopenia.
To What Degree is Chondrocyte Hypertrophy in Osteoarthritis Due to Cellular Senescence?
https://www.fightaging.org/archives/2020/04/to-what-degree-is-chondrocyte-hypertrophy-in-osteoarthritis-due-to-cellular-senescence/
Senescent cells are large. They do not replicate, that function is disabled, but it is as if they go ...
Source: Fight Aging! - April 26, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
An Update on Oisin Biotechnologies and OncoSenX
This short interview with Gary Hudson of Oisin Biotechnologies (and more recently Turn.bio) covers some of the history and the present status of the company and its spinoff OncoSenX. Oisin Biotechnologies is one of the more ambitious senolytics companies working on means of destroying senescent cells in old tissues in order to produce rejuvenation. The company is using a programmable gene therapy approach rather than the small molecule development that the majority of other programs are undertaking.
"As we all know, the dilemma faced by any company that wishes to attack aging as a disease is that the FDA doesn't y...
Source: Fight Aging! - April 23, 2020 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Fight Aging! Newsletter, March 30th 2020
This study, for the first time, shows that transplantation of non-autologous mitochondria from healthy skeletal muscle cells into normal cardiomyocytes leads to short-term improvement of bioenergetics indicating "supercharged" state. However, over time these improved effects disappear, which suggests transplantation of mitochondria may have a potential application in settings where there is an acute stress.
Outlining Some of the Science Behind Partial Reprogramming at Turn.bio
https://www.fightaging.org/archives/2020/03/outlining-some-of-the-science-behind-partial-reprogramming-at-turn-bio/
Turn.bio is a...
Source: Fight Aging! - March 29, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, March 2nd 2020
In conclusion, the recently demonstrated protective effects of NMN treatment on neurovascular function can be attributed to multifaceted sirtuin-mediated anti-aging changes in the neurovascular transcriptome. Our present findings taken together with the results of recent studies using mitochondria-targeted interventions suggest that mitochondrial rejuvenation is a critical mechanism to restore neurovascular health and improve cerebral blood flow in aging.
Wnt/β-Catenin Signaling as a Point of Intervention to Spur Greater Neural Regeneration
https://www.fightaging.org/archives/2020/02/wnt-%ce%b2-catenin-signali...
Source: Fight Aging! - March 1, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, February 24th 2020
In conclusion, taller body height at the entry to adulthood, supposed to be a marker of early-life environment, is associated with lower risk of dementia diagnosis later in life. The association persisted when adjusted for educational level and intelligence test scores in young adulthood, suggesting that height is not just acting as an indicator of cognitive reserve.
A Comparison of Biological Age Measurement Approaches
https://www.fightaging.org/archives/2020/02/a-comparison-of-biological-age-measurement-approaches/
Researchers here assess the performance of a range of approaches to measuring biological...
Source: Fight Aging! - February 23, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
