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Fight Aging! Newsletter, July 4th 2022
This study showed that centenarians had very specific changes in CD4+ T cell populations, which were manifested by an elevated Th17/Treg ratio in vivo, as well as a changed secretory phenotype. Although the T cells of centenarians cannot resist the aging-related expression of proinflammatory genes, their secretory phenotype was altered, explaining the relatively low level of inflammation in centenarians. These results suggested the presence of a mechanism to ameliorate inflammaging in centenarians. This may be achieved by reversing the imbalance of Th17/Treg cells and reducing pro-inflammatory cytokines.
Longevit...
Source: Fight Aging! - July 3, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, June 20th 2022
This study showed a negative relationship between the gaps and the number of senescence cells. Moreover, we found a similar reduction in 30-month-old naturally and 7-month-old D-gal-induced aging rats. Given these consistent data from different eukaryotic organisms, it suggests that the Youth-DNA-GAP is a marker of phenotype-related aging degree
Towards Scaffold-Based Regeneration of Dental Pulp
https://www.fightaging.org/archives/2022/06/towards-scaffold-based-regeneration-of-dental-pulp/
Researchers are working towards the ability to regenerate the dental pulp inside teeth. Full regeneration of teeth h...
Source: Fight Aging! - June 19, 2022 Category: Research Authors: Reason Tags: Newsletters 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
Decreasing Clonal Diversity with Age in Human Hematopoiesis
In today's research materials, scientists present data on clonal hematopoiesis with age in humans. Hematopoiesis is the creation of blood and immune cells, taking place in the bone marrow. Clonal hematopoiesis of indeterminate potential (CHIP) is the name given to one of the age-related changes taking place in the populations of stem cells and progenitor cells that carry out hematopoiesis. Stochastic mutations occur constantly in the body. In the dynamic hematopoietic cell populations of the bone marrow, some of these mutations allow the mutated cells to outcompete their undamaged peers to make up a much larger fraction of...
Source: Fight Aging! - June 8, 2022 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
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
Slower Protein Turnover in the Aged Brain
Metabolic activity slows down in late life, perhaps in large part because this reduces the risk of cancer. In an environment of pervasive molecular damage, a growing burden of nuclear DNA mutations, inflammation, and a declining immune system, more cellular replication and activity implies an ever greater risk of cancer. Longevity in our species appears to be a trade-off that selects for a slow decline in tissue function coupled to a lower cancer risk, rather than maintained tissue function coupled to a higher cancer risk.
Greater human longevity relative to other primates is a comparatively recent development in ev...
Source: Fight Aging! - June 3, 2022 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Cancer
I just finished reading The Emperor of All Maladies: A biography of cancer, by Siddhartha Mukherjee. I have a quibble with the title -- it should be history, not biography. By personifying cancer, he plays into just the mythologizing he is trying to dispel. But that aside, I found the book very informative. I knew the general outline of the story, but not a lot of the details. What I want to comment on here, which I believe is the key takeaway, is that medical practice is subject to ideological capture, even in the modern era of " scientific " medicine. In the center of the book is the horror story of radical mastecto...
Source: Stayin' Alive - May 29, 2022 Category: American Health 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
Cyclic FOXM1 Upregulation Extends Life in Aged Mice
In this study, the researchers set out to check if it's possible to delay aging by increasing the expression of FOXM1 in progeroid and naturally aged mice. However, instead of inducing the fully functioning FOXM1, a modified gene that did not contain an N-terminal part was chosen. The C-terminal side of FOXM1 plays an important role in transcriptional activity, and the N-terminal side plays a role in the regulation of intracellular processes, such as controlling the segregation of genetic material during cell division. The N-terminal side was also shown to have an autoinhibitory function repressing the activity of the prot...
Source: Fight Aging! - May 26, 2022 Category: Research Authors: Reason Tags: Daily News 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
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
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 cell populations and regenerative capacity, as well as a near immunity to cancer. Accordingly, the research community is very interested in uncovering the genetic and biochemical differences that allow naked mole-rats to achieve these desirable outcomes.
In today's open access paper, the authors report on their investigation of the biochemistry a...
Source: Fight Aging! - May 18, 2022 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, May 16th 2022
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:
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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! - May 15, 2022 Category: Research Authors: Reason Tags: Newsletters 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 9th 2022
In conclusion, although several favorable effects are obtained in our heterochronic non-myeloablative transplantation model, additional optimization is needed for better rejuvenation effects.
More on GPNMB as a Target for Senolytic Therapies to Clear Senescent Cells
https://www.fightaging.org/archives/2022/05/more-on-gpnmb-as-a-target-for-senolytic-therapies-to-clear-senescent-cells/
You might recall that researchers recently demonstrated that vaccination against GPNMB is a senolytic strategy, reducing the harmful burden of senescent cells in aged tissues by directing the immune system to destroy these c...
Source: Fight Aging! - May 8, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
