DNA Damage and Consequent Inflammation in Heart Failure
One of the ways in which cell damage characteristic of aging can provoke inflammation is via the mislocalization of DNA. Either nuclear DNA or mitochondrial DNA can find its way to the cytosol, where it can trigger responses evolved to detect bacterial or viral infection, or severe cell damage. This creates a cascade of downstream signaling leading to an inflammatory response. In youth these events occur comparatively rarely, and in circumstances wherein immune response and potentially even cell death are beneficial. With age, however, there is a continued mild but growing level of dysfunction and consequent sustained infl...
Source: Fight Aging! - September 8, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Towards an Improved Suppression of Maladaptive Inflammation
This article reviews the current regulatory role of miR-7 in inflammation and related diseases, including viral infection, autoimmune hepatitis, inflammatory bowel disease, and encephalitis. It expounds on the molecular mechanism by which miR-7 regulates the occurrence of inflammatory diseases. Finally, the existing problems and future development directions of miR-7-based intervention on inflammation and related diseases are discussed to provide new references and help strengthen the understanding of the pathogenesis of inflammation and related diseases, as well as the development of new strategies for clinical interventi...
Source: Fight Aging! - September 7, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
The Heart Has High Energy Needs, Making it Vulnerable to Age-Related Mitochondrial Dysfunction
Not all tissues are equal in their energy needs. The brain and more consistently active muscles, such as the heart, are at the top of the list. Energy for cell and tissue processes is provided by the chemical energy store molecule adenosine triphosphate (ATP), which is produced by mitochondria. Every cell contains hundreds of mitochondria, the descendants of ancient symbiotic bacteria now evolved to become fully integrated cell components. Mitochondria still replicate much like bacteria, each containing a small remnant circular genome. When damaged or dysfunctional, mitochondria are cleared by the complex process of mitoph...
Source: Fight Aging! - September 6, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Is Transfusion of Young Blood Essentially a Form of Extracellular Vesicle Therapy?
In this study, we examined the effect of young serum on the cognitive performance of aged mice. We show that repeated infusions with small volumes of young serum significantly improved age-associated memory deficits and this effect was abrogated after the serum was depleted of circulating EVs. RNA-seq analysis of choroid plexus demonstrated effects on genes involved in barrier function and trans-barrier transport. Interestingly, the hippocampal transcriptome demonstrated a significant upregulation of Klotho (Kl) gene, which codes for the longevity protein Klotho, following young serum treatment. Notably this effect was abr...
Source: Fight Aging! - September 4, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
A Discussion of Current Approaches Under Development for the Treatment of Aging
This open access paper tours a number of the present approaches under development to the treatment of aging as a medical condition, dwelling the most on therapies targeting senescent cells, either for destruction or to suppress the harmful senescence-associated secretory phenotype. We live in an exciting time of great potential, an age of accelerating progress in the capabilities of medical biotechnology, though it remains the case that too few people realize just how close we are to the widespread use of the first practical rejuvenation therapies.
Aging poses one of the greatest challenges for modern medicine, as...
Source: Fight Aging! - September 4, 2023 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
The Cost of Cardiovascular Disease
Age-related disease places a huge financial burden on individuals and their caregivers; even the need for caregivers arises only because aging produces disability. Even only considering cardiovascular disease, the largest contribution to human mortality, the costs are enormous. This is a point often made by advocates arguing for greater institutional funding of ways to treat aging. Present levels of funding for research and development of means to reduce age-related disease are very low in comparison to the massive ongoing costs that result from age-related disease. It makes little sense for this to be the case in an age o...
Source: Fight Aging! - September 4, 2023 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Fight Aging! Newsletter, September 4th 2023
In conclusion, although the contribution of CRF to GrimAgeAccel and FitAgeAccel is relatively low compared to lifestyle-related factors such as smoking, the results suggest that the maintenance of CRF is associated with delayed biological ageing in older men.
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Release of Acetylcholine is Necessary for the Aging Brain to Compensate for a Lack of Neurogenesis
https://www.fightaging.org/archives/2023/09/release-of-acetylcholine-is-necessary-for-the-aging-brain-to-compensate-for-a-lack-of-neurogenesis/
Neurogenesis is the process by which new neurons are created by neural stem c...
Source: Fight Aging! - September 3, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Release of Acetylcholine is Necessary for the Aging Brain to Compensate for a Lack of Neurogenesis
We examined whether adult neurogenesis sustains hippocampal connections cumulatively across the life span. Long-term suppression of neurogenesis as occurs during stress and aging resulted in an accelerated decline in hippocampal acetylcholine signaling and a slow and progressing emergence of profound working memory deficits.
These deficits were accompanied by compensatory reorganization of cholinergic dentate gyrus inputs with increased cholinergic innervation to the ventral hippocampus and recruitment of ventrally projecting neurons by the dorsal projection. While increased cholinergic innervation was dysfunctional...
Source: Fight Aging! - September 1, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Physical Fitness Correlates with Slower Epigenetic Aging in Newer DNA Methylation Clocks
In conclusion, although the contribution of CRF to GrimAgeAccel and FitAgeAccel is relatively low compared to lifestyle-related factors such as smoking, the results suggest that the maintenance of CRF is associated with delayed biological ageing in older men. (Source: Fight Aging!)
Source: Fight Aging! - August 31, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Intermittent Fasting Reduces Pathology in a Mouse Model of Alzheimer's Disease
The sizable body of work produced on calorie restriction and fasting over the last twenty years is supportive of the hypothesis that time spent hungry is an important factor determining the scale of benefits to health and longevity. The cellular response to a transient lack of nutrients involves improved cell maintenance, such as upregulation of autophagy to clear out damaged and worn molecular machinery. Looking at a level of organization above the cell, a transient state of hunger likely produces many other benefits to the way in which complex tissues and relationships between tissues function in the body. It dampens inf...
Source: Fight Aging! - August 30, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
A Perspective on the Coming Regulatory Shift to Approval of Drugs to Treat Aging
At some point, regulatory bodies that oversee the development of new medicine will accept that therapies can target causative mechanisms of aging in order to slow or reverse the progression of aging, and that there are viable ways to assess new treatments that treat aging. There is growing pressure from the academic community and longevity-focused biotech industry for the ability to run clinical trials to treat aging, rather than to treat one specific age-related disease.
While inevitable, this change will take some years to come to pass, and likely require greater consensus in the research community on reasonable a...
Source: Fight Aging! - August 29, 2023 Category: Research Authors: Reason Tags: Healthy Life Extension Community Source Type: blogs
The Meninges at the Border Between the Brain Immune System and the Peripheral Immune System
While the immune system of the brain is distinct from that of the rest of the body, the central nervous system walled off by the blood-brain barrier, the inflammatory status of the brain is very much influenced by the inflammatory status of the rest of the body. Signals pass back and forth, and at the edges of the brain there are a variety of tissues in which one can find peripheral immune cells such as macrophages of the innate immune system or T cells of the adaptive immune system.
One such tissue is the meninges, the membranes that wrap the brain and spinal cord. In recent years, since the discovery of the glymph...
Source: Fight Aging! - August 28, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
A Theory of Genetic Dimensions in the Law
Yaniv Heled (Georgia State University), Liza Vertinsky (University of Maryland), Ana Santos Rutschman (Villanova University), A Theory of Genetic Dimensions in the Law, 99 Ind. L.J. (2023): Since the biotechnology revolution of the 1970s, genetic science and genetic technology have... (Source: HealthLawProf Blog)
Source: HealthLawProf Blog - August 28, 2023 Category: Medical Law Authors: Katharine Van Tassel Source Type: blogs
Fight Aging! Newsletter, August 28th 2023
In conclusion, we identified 20 genes with significant evolutionary signals unique to long-lived species, which provided new insight into the lifespan extension of mammals and might bring new strategies to extend human lifespan.
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Trials of Xenotransplantation of Pig Organs into Humans Continue
https://www.fightaging.org/archives/2023/08/trials-of-xenotransplantation-of-pig-organs-into-humans-continue/
Researchers have genetically engineered pigs to overcome the known barriers to transplantation of pig organs into humans, and have reached the stage of conducting transplants i...
Source: Fight Aging! - August 27, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
The Longevity-Associated Variant of BPIFB4 Reduces Heart Disease Severity
Few human longevity-associated gene variants are replicated in multiple patient populations. One of those is a variant of BPIFB4, that appears to improve immune function and lower inflammation by adjusting the behavior of macrophage cells of the innate immune system. Delivering the variant to mice using a gene therapy has similar effects. It may well operate via other mechanisms as well, however. Few proteins in a living cell turn out to have only one purpose.
In today's open access paper, researchers report that the BPIFB4 variant reduces the severity of coronary artery disease in humans and mice. Delivering the va...
Source: Fight Aging! - August 25, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
