Fight Aging! Newsletter, September 18th 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,
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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! - September 17, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Urolithin A Supplementation Improves Mitochondrial Function and Hematopoiesis in Mice
A number of supplement-based approaches have been demonstrated to modestly improve mitochondrial function with age. This includes the various ways to increase NAD levels using vitamin B3 derivatives, mitochondrially targeted antioxidants such as SkQ1, MitoQ, and SS-31, and other compounds such as urolithin A for which the mechanism causing improved mitochondrial function is not as well determined. There is an argument to be made that all of these compounds work because they in some way improve the operation of mitophagy, a mitochondrial quality control mechanism that senses worn and damaged mitochondria, before directing t...
Source: Fight Aging! - September 13, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Towards Targeted Telomerase Gene Therapy
Interestingly, telomerase upregulation to lengthen telomere length may turn out to be a decent match for the capabilities of lipid nanoparticle (LNP) delivery of messenger RNA (mRNA) as an implementation of gene therapy. This produces one to two days of expression which, by the sound of things, is enough to give telomeres enough of a boost in length to be worth the exercise, can be repeated as needed, is familiar to regulators, and the LNP field is energetically working towards variant LNPs that can target specific tissues and cell types.
The question is whether or not lengthening of telomeres via telomerase gene th...
Source: Fight Aging! - September 13, 2023 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Organoids Produce Tooth Enamel Proteins
Researchers at the University of Washington School of Medicine have developed a method to create stem cell-derived organoids that can produce tooth enamel proteins. The breakthrough could pave the way for lab grown enamel that can be used in dental repairs and may even allow for living fillings or completely new living teeth that can be implanted into a patient’s jaw. The researchers studied the genetic activity that occurs during tooth development, and then used this information to steer stem cells into becoming ameloblasts, which are the cell type responsible for enamel creation. Once present in organoids, the cells ca...
Source: Medgadget - September 12, 2023 Category: Medical Devices Authors: Conn Hastings Tags: Dentistry Genetics Materials uwsomwwami Source Type: blogs
Dormant Neural Precursor Cells May Awaken Over Adult Life to Maintain the Brain
Neural stem cells residing within a few regions of the mammalian brain divide to generate new daughter neurons throughout adult life, the process of neurogenesis. Neurogenesis is particularly associated with functions such as memory, which requires changes in brain state driven by the creation of new neurons and neural connections. Additionally, however, researchers have identified a population of dormant progenitor cells that can mature into neurons, more broadly distributed throughout the brain. This population can be diminished and eventually exhausted by that activity, but researchers hypothesize that it could nonethel...
Source: Fight Aging! - September 12, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Autophagy is Protective Against Hematopoietic Stem Cell Aging
Hematopoietic stem cells in the bone marrow give rise to red blood cells and immune cells. Like all stem cell populations, they become increasingly dysfunctional with age, however. In part this is damage to the stem cells themselves, but a sizable portion of the problem results from age-related damage and change in the niche of supporting cells that is needed to maintain a stem cell population. It is hoped that restoring stem cell function in older individuals will go a long way towards producing slowed aging and improved health. At present the research community is progressing towards this goal one stem cell population at...
Source: Fight Aging! - September 12, 2023 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Fight Aging! Newsletter, September 11th 2023
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 10, 2023 Category: Research Authors: Reason Tags: Newsletters 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
Identifying a Stem Cell Population in the Adult Thymus
Researchers here report on the characterization of a stem cell population in the adult thymus that gives rise to the thymic epithelial cells that allow the thymus to host the development of T cells of the adaptive immune system. This is of interest because the thymus atrophies with age, losing active thymic epithelial tissue. The supply of new T cells provided to the immune system diminishes greatly as a consequence, and this is a major contributing factor in the age-related decline of immune function. It is the case that cell therapy approaches are one of the potential ways in which an aged thymus might be regenerated, an...
Source: Fight Aging! - September 7, 2023 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Towards Engraftment of New Stem Cells into Damaged Lungs
Perhaps the most important challenge in the field of regenerative medicine is to enable engraftment and survival of transplanted cells, allowing new cell populations to replace those made damaged or dysfunctional due to age, injury, or other causes. Despite some advances, survival of transplanted cells remains a significant challenge. Here is one example of signs of progress on this front, however. Judging by the recent past, solutions discovered by researchers are likely to continue to be tissue specific. This implies that a great deal more work lies ahead in order to build a usefully broad toolkit to allow creation and t...
Source: Fight Aging! - September 6, 2023 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
PU.1 Inhibition to Reduce Microglial Inflammation in the Aging Brain
Researchers here report on a drug discovery effort targeting PU.1, a gene implicated in increased inflammation of microglia in the brain. Microglia are innate immune cells of the central nervous system. Like macrophages in the rest of the body, they react to the damage and dysfunction of aging with increased inflammatory behavior, a maladaptive response that worsens pathology. Chronic, unresolved inflammation is clearly disruptive to tissue function wherever it occurs in the body. In the brain, chronic inflammation is a well-studied feature of conditions such as Alzheimer's disease. A greater population of inflammatory mic...
Source: Fight Aging! - September 6, 2023 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Reviewing What is Known of the Aging of Neural Stem Cells
Neural stem cells produce the new neurons necessary for memory function and maintenance of brain tissue throughout adult life. This process of neurogenesis declines with age, however. Neural stem cell activity is reduced with age, in much the same way as all stem cell populations (and their niche structures) appear to become damaged and impaired as a result of the mechanisms of aging. Do we know enough about the way in which neural stem cells age in order to attempt prevention? As researchers point out here, some strategies may make the situation worse by exhausting rather than renewing stem cell pools. A few inroads are b...
Source: Fight Aging! - September 5, 2023 Category: Research Authors: Reason Tags: Daily News 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
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
