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Fight Aging! Newsletter, August 14th 2023
This study demonstrates just how vital the thymus is to maintaining adult health." « Back to Top Does Amyloid-β Aggregation Cause Broad Disruption of Proteostasis? https://www.fightaging.org/archives/2023/08/does-amyloid-%ce%b2-aggregation-cause-broad-disruption-of-proteostasis/ Researchers here speculate on the ability of insoluble amyloid-β aggregates to be broadly disruptive of the solubility of many other proteins, and thus disruptive to cell and tissue function. Is this important in aging? The evidence here shows the existence of the mechanism in a lower species, but that doesn't n...
Source: Fight Aging! - August 13, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Fight Aging! Newsletter, June 19th 2023
In conclusion, among Swedish middle-aged subjects, nearly two-thirds showed complete fatty degeneration of thymus on CT. Age-Related Dysfunction of Water Homeostasis https://www.fightaging.org/archives/2023/06/age-related-dysfunction-of-water-homeostasis/ Dehydration can be an issue in older people. As in every complex system in the body, the mechanisms by which hydration is regulated become dysfunctional with advancing age. Researchers here look at the brain region responsible for regulating some of the response to dehydration, cataloging altered gene expression in search of the more important mechani...
Source: Fight Aging! - June 18, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Senolytic Treatments as a Strategy to Improve Immune Function in Late Life
Senescent cells accumulate in tissues throughout the body with age. Cells become senescent constantly throughout life, largely by reaching the Hayflick limit on replication, but a small number due to potentially cancerous mutations, or other forms of damage and stress. Senescent cells are rapidly removed by the immune system in youth, keeping their numbers low, but the balance between creation and destruction is disrupted with aging. There is greater stress, but perhaps more importantly the immune system becomes less efficient, less able to clear senescent cells in a timely fashion. Since senescent cells actively secrete p...
Source: Fight Aging! - June 14, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs

Fight Aging! Newsletter, January 30th 2023
In conclusion, deletion of p16Ink4a cells did not negatively impact beta-cell mass and blood glucose under basal and HFD conditions and proliferation was restored in a subset of HFD mice opening further therapeutic targets in the treatment of diabetes. Communication Between Blood and Brain in Aging and Rejuvenation https://www.fightaging.org/archives/2023/01/communication-between-blood-and-brain-in-aging-and-rejuvenation/ As noted here, joining the circulatory systems of an old and young mouse results in some degree of rejuvenation in the old mouse. Where brain function is improved, researchers are inter...
Source: Fight Aging! - January 29, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Fight Aging! Newsletter, January 9th 2023
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, please visit: 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! - January 8, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Fight Aging! Newsletter, January 2nd 2023
In conclusion, circulating monocytes in older adults exhibit increased expression of activation, adhesion, and migration markers, but decreased expression of co-inhibitory molecules. MERTK Inhibition Increases Bone Density via Increased Osteoblast Activity https://www.fightaging.org/archives/2022/12/mertk-inhibition-increases-bone-density-via-increased-osteoblast-activity/ Bone density results from the balance of constant activity on the part of osteoblasts and osteoclasts, the former building bone, the latter breaking it down. With advancing age, the balance of activity shifts to favor osteoclasts, prod...
Source: Fight Aging! - January 1, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

A Look Back at 2022: Progress Towards the Treatment of Aging as a Medical Condition
At the end of 2022, we can reflect on the fact that we are steadily entering a new era of medicine, one in which mechanisms of aging are targeted rather than ignored. It is a profound change, one that will change the shape of a human life and ultimately the human condition by eliminating the greatest sources of suffering and death in the world. Year after year, we see increased funding, ongoing progress towards therapies capable of slowing aging or reversing aspects of aging, and a growing taxonomy of such potential therapies and their target mechanisms. The view of aging in the medical community and public at large...
Source: Fight Aging! - December 30, 2022 Category: Research Authors: Reason Tags: Of Interest Source Type: blogs

Fight Aging! Newsletter, November 28th 2022
This study explored whether determining the gain or loss of specific taxa represent a more precise metric of healthy/unhealthy aging than summary microbiome statistics, such as diversity and uniqueness. We analyzed microbiome diversity and four measures of microbiome uniqueness in 21,000 gut microbiomes for their relationship with aging and health. We show that diversity and uniqueness measures are not synonymous; uniqueness is not a uniformly desirable feature of the aging microbiome, nor is it an accurate biomarker of healthy aging. Different measures of uniqueness show different associations with diversity and with mark...
Source: Fight Aging! - November 27, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Fight Aging! Newsletter, November 14th 2022
In this study, we show that TXNIP is vital for the cell fate choice when cells are challenged by various stress signals. Furthermore, prolonged IGF1 treatment leads to the establishment of a premature senescence phenotype characterized by a unique senescence network signature. Combined IGF1/TXNIP-induced premature senescence can be associated with a typical secretory inflammatory phenotype that is mediated by STAT3/IL-1A signaling. Finally, these mechanistic insights might help with the understanding of basic aspects of IGF1-related pathologies in the clinical setting. Investigating the Ability of Type 2 Diabetes...
Source: Fight Aging! - November 13, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Senescent Cells as a Cancer Vaccine
Researchers here note the discovery that vaccinating mice with senescent cancer cells ensures that the immune system will more aggressively attack a later introduction of cancerous cells. Since we know that most cancer therapies induce senescence in cancerous cells to a fair degree, one has to think that the effectiveness of this approach will diminish as a cancer progresses to form a solid tumor and co-opts the immune system in various ways. Still, it sounds as though it could be a potentially useful after, for example, surgical resection of a tumor, to help reduce the odds that the cancer will reoccur. Scientis...
Source: Fight Aging! - November 9, 2022 Category: Research Authors: Reason Tags: Daily News Source Type: blogs

Fight Aging! Newsletter, September 19th 2022
Conclusion Use of the Khavinson peptides and melatonin in combination in this way, at this dose, negatively impacts the thymus, producing a reduction in active tissue and increase in atrophy to fatty tissue. The degree to which this atrophy occurred is greater than one would expect to take place over nine months of aging at this stage of life. Why did this outcome occur, given the animal studies showing thymic regrowth, and the studies showing reduced later life mortality following use of thymogen? We can only speculate. Firstly, the dose makes the poison, and the dosing here may have been too high, too frequ...
Source: Fight Aging! - September 18, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Fight Aging! Newsletter, September 12th 2022
Discussion of Present Drug Development to Target Senescent Cells Targeting Senescent Cells to Better Address Cancer and Consequences of Cancer Therapy Calorie Restriction Suppresses Generation of Immune Cells via Changes to the Gut Microbiome Arguing for an Expansion of the Hallmarks of Aging https://www.fightaging.org/archives/2022/09/arguing-for-an-expansion-of-the-hallmarks-of-aging/ The hallmarks of aging form a catalog of largely better studied changes in cells and tissues considered relevant, and possibly more important, in the onset and development of age-related degeneration and disease. This i...
Source: Fight Aging! - September 11, 2022 Category: Research Authors: Reason Tags: Newsletters 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

Fight Aging! Newsletter, January 3rd 2022
In this study, we showed that the iPaD (inducing Plagl2 and anti-Dyrk1a) lentivirus substantially rejuvenated the proliferative and neurogenic potential of NSCs in the aged brain. Clonal analysis by a sparse labeling approach as well as transcriptome analysis indicated that iPaD can rejuvenate aged NSCs (19-21 mo of age) to a level comparable with those at 1 or 2 months of age and successfully improved cognition of aged mice. Once rejuvenated and activated by iPaD, aged dormant NSCs can generate, on average, 4.9 neurons but very few astrocytes in 3-week tracing. Furthermore, these activated NSCs were maintained for ...
Source: Fight Aging! - January 2, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

A Look Back at 2021: Progress Towards the Treatment of Aging as a Medical Condition
Well, here we are again, at the end of another pandemic year, a year older and - hopefully - a year wiser and more knowledgeable. I said all that really needs to be said on the topic of COVID-19 as an age-related condition at the end of last year. We might hope that, given widespread vaccination, the pandemic will become a topic of diminishing importance as the year ahead progresses, even given the present round of variants, fears, and reintroduction of restrictions. Advocacy for Aging Research Have we finally made significant progress in convincing the world that aging is the cause of age-related disease, th...
Source: Fight Aging! - December 31, 2021 Category: Research Authors: Reason Tags: Of Interest Source Type: blogs

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