The Short-Term Economic Argument for Undertaking Efforts to Treat Aging as a Medical Condition
The primary economic argument presently made for treating aging as a medical condition emerges from the fact that medical spending and medical research is largely entwined with government in much of the world; it is increasingly a public purse, not a collection of private purses. Politicians and bureaucrats care (to some degree) about avoiding the looming financial implosion that will result when present unsustainable spending policies run head-on into the demographic transition to a society in which an ever-larger proportion of people are old, suffering from age-related disease, and many of their expenses paid via entitle...
Source: Fight Aging! - July 20, 2023 Category: Research Authors: Reason Tags: Activism, Advocacy and Education Source Type: blogs
Fight Aging! Newsletter, July 17th 2023
In conclusion, the longevity-associated genotype of FLT1 may confer increased lifespan by protecting against mortality risk posed by hypertension. We suggest that FLT1 expression in individuals with longevity genotype boosts vascular endothelial resilience mechanisms to counteract hypertension-related stress in vital organs and tissues.
Resistance Exercise Slows the Onset of Pathology in a Mouse Model of Alzheimer's Disease
https://www.fightaging.org/archives/2023/07/resistance-exercise-slows-the-onset-of-pathology-in-a-mouse-model-of-alzheimers-disease/
With the caveat that mouse models of Alzheimer'...
Source: Fight Aging! - July 16, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
The Influence of Chronic Inflammation on the Hallmarks of Aging
Chronic inflammation is a feature of aging, a continual activation of the immune response without any triggering injury or infection. Many different mechanisms contribute to this state of unresolved inflammatory signaling: the accumulation of senescent cells and the senescence-associated secretory phenotype (SASP); mitochondrial dysfunction leading to mislocalized mitochondrial DNA that triggers an innate immune reaction; signaling from visceral fat cells in those who are overweight; changes in the gut microbiome and intestinal barrier that allow microbes and microbial metabolites to provoke the immune system; and so on an...
Source: Fight Aging! - July 11, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, July 10th 2023
In conclusion, the examination of the GBA can aid in understanding the etiology and development of NDs, which may benefit the improvement of clinical treatments for these disorders and ND interventions. This review indicates existing knowledge about the involvement of microbiota present in the gut in NDs and potential treatment options.
The Aging of the Enteric Nervous System
https://www.fightaging.org/archives/2023/07/the-aging-of-the-enteric-nervous-system/
The enteric nervous system is the nervous system of the intestines, and likely an important part of the relationship between the gut microbiome ...
Source: Fight Aging! - July 9, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, July 3rd 2023
In this study, cultured adipose-derived stem cells (ASCs) were derived from subcutaneous white adipose tissue isolated from mice fed a normal diet. We performed senescence-associated-β-galactosidase (SA-β-gal) staining, real-time PCR, and Western blot to evaluate the levels related to cellular senescence markers.
The mRNA expression levels of senescence markers were significantly increased in the later passages of ASCs. We show that light activation reduced the expression of senescent genes, and SA-β-Gal in all cells at passages. Moreover, the light-activated ASCs-derived exosomes decrease the expression of senes...
Source: Fight Aging! - July 2, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, June 26th 2023
This study explored the association between different cooking fuel types and the risk of cancer and all-cause mortality among seniors constructing Cox regression models. Data were obtained by linking waves of 6, 7, and 8 of the Chinese Longitudinal Healthy Longevity Survey, which included a total of 7,269 participants who were 65 years old and over. Cooking fuels were categorized as either biomass, fossil, or clean fuels. And the effects of switching cooking fuels on death risk were also investigated using Cox regression models.
The results indicate that, compared with the users of clean fuels, individuals using bio...
Source: Fight Aging! - June 25, 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 mechan...
Source: Fight Aging! - June 18, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, June 12th 2023
In this study, we investigated the effect of NXP032 on neurovascular stabilization through the changes of PECAM-1, PDGFR-β, ZO-1, laminin, and glial cells involved in maintaining the integrity of the blood-brain barrier (BBB) in aged mice. NXP032 was orally administered daily for 8 weeks. Compared to young mice and NXP032-treated mice, 20-month-old mice displayed cognitive impairments in Y-maze and passive avoidance tests. NXP032 treatment contributed to reducing the BBB damage by attenuating the fragmentation of microvessels and reducing PDGFR-β, ZO-1, and laminin expression, thereby mitigating astrocytes and microglia ...
Source: Fight Aging! - June 11, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, June 5th 2023
In conclusion, higher BMR might reduce lifespan. The underlying pathways linking to major causes of death and relevant interventions warrant further investigation.
Betting Against Progress Turns Out Poorly, But Can Work in the Short Term in a Slow Field
https://www.fightaging.org/archives/2023/06/betting-against-progress-turns-out-poorly-but-can-work-in-the-short-term-in-a-slow-field/
Setting oneself up as a spokesperson for "we will not achieve this goal", as the fellow noted here is choosing to do, is a bet against technological progress. A glance at any few decade period in the past two hundred yea...
Source: Fight Aging! - June 4, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Investigating Bacteria ’ s CRISPR Defense System to Improve Human Health
Credit: Adrian Sanchez Gonzales.
The earliest Andrew Santiago-Frangos, Ph.D., remembers being interested in science was when he was about 8 years old. He was home sick and became engrossed in a children’s book that explained how some bacteria and viruses cause illness. To this day, his curiosity about bacteria persists, and he’s making discoveries about CRISPR—a system that helps bacteria defend against viruses—as a postdoctoral researcher and NIGMS-funded Maximizing Opportunities for Scientific and Academic Independent Careers (MOSAIC) scholar at Montana State University (MSU) in Bozeman.
Becoming a Biologist...
Source: Biomedical Beat Blog - National Institute of General Medical Sciences - May 31, 2023 Category: Research Authors: Chrissa Chverchko Tags: Being a Scientist Cells Bacteria Cellular Processes COVID-19 DNA Profiles Source Type: blogs
Fight Aging! Newsletter, May 29th 2023
In this study, we used a Drosophila model to understand the role of the dec2P384R mutation on animal health and elucidate the mechanisms driving these physiological changes. We found that the expression of the mammalian dec2P384R transgene in fly sleep neurons was sufficient to mimic the short sleep phenotype observed in mammals. Remarkably, dec2P384Rmutants lived significantly longer with improved health despite sleeping less. In particular, dec2P384R mutants were more stress resistant and displayed improved mitochondrial fitness in flight muscles. Differential gene expression analyses went on to reveal several altered tr...
Source: Fight Aging! - May 28, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Triglyceride Depletion Mimics Calorie Restriction in Old Muscles
Researchers here observe that triglyceride depletion in very aged muscles produces benefits, looking much like a form of calorie restriction that improves cell metabolism. This work was carried out in killifish, a highly regenerative species, so it remains to be seen as to whether a similar process operates in mammals, or whether it is in any way interesting or novel as a basis for therapy. Finding modest benefits in very late life is a poor alternative to focusing instead on methods of rejuvenation.
Sarcopenia, the age-related decline in muscle function, places a considerable burden on health-care systems. While ...
Source: Fight Aging! - May 25, 2023 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Reviewing the Complexity of Immunosenescence
The immune system becomes more inflammatory and less competent with advancing age, undergoing sweeping changes in immune cell characteristics and relative population sizes. The cells, structures, and processes that produce immune cells similarly undergo significant changes. Taken together, this is called immunosenescence, though many researchers choose to break out the inflammatory component of dysfunction into its own category, calling it inflammaging. One of the most important goals for the research community is to find ways to improve immune function in older people.
Evidently, the decline of the immune system is...
Source: Fight Aging! - May 22, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, May 22nd 2023
Conclusions to be Drawn
A High Fat Diet Accelerates Atherosclerosis Less Directly than One Might Suspect
How to Construct Measures of Biological Age
A Long-Term Comparison of Metformin in Diabetics with Non-Diabetic Controls
In Search of Distinctive Features of the Gut Microbiome in Long-Lived Individuals
Greater Fitness in Humans Implies a Younger Epigenome and Transcriptome
Intestinal Barrier Dysfunction as a Feature of Aging in Many Species
NAFLD as an Age-Related Condition
Towards Sensory Hair Cell Regeneration in the Inner Ear
Raised Leve...
Source: Fight Aging! - May 21, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, May 15th 2023
In this study, we examined the average telomere length and telomerase activity, as well as the formation of telomere associated foci (TAFs) and the mRNA expression levels of the shelterin components in cultured primary cells of Spalax, a long-lived, hypoxia-tolerant, and cancer-resistant blind mole-rat species.
We showed that with cell passages, Spalax fibroblasts demonstrated significant shortening in telomere length, similar to rat cells, and in line with the processes observed earlier in tissues. We also demonstrated that the average telomere length in Spalax fibroblasts was significantly higher than the average ...
Source: Fight Aging! - May 14, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
