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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,
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! - September 17, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Her work paved the way for blockbuster obesity drugs. Now, she ’s fighting for recognition
When Svetlana Mojsov heard the spring 2021 announcement, she was startled. The Canada Gairdner International Award, a prestigious biomedical research prize, would be bestowed on three scientists for work underpinning the diabetes and obesity drugs that have exploded in popularity in recent years. “I was really upset,” recalls Mojsov, a chemist at Rockefeller University.
The Gairdner award marked the third time in 4 years that the same trio of scientists—Joel Habener at Massachusetts General Hospital (MGH), Daniel Drucker at the University of Toronto, and Jens Juul Holst at the University of Copenhagen—were hon...
Source: Science of Aging Knowledge Environment - September 8, 2023 Category: Geriatrics Source Type: research
Fight Aging! Newsletter, August 21st 2023
This study aimed to investigate the association between frailty index and circulating CAP2 concentration in 467 community-dwelling older adults (median age: 79; range: 65-92 years). The selected robust regression model showed that circulating CAP2 concentration was not associated with chronological age, as well as sex and education. However, circulating CAP2 concentration was significantly and inversely associated with the frailty index: a 0.1-unit increase in frailty index leads to ~0.5-point mean decrease in CAP2 concentration. Furthermore, mean CAP2 concentration was significantly lower in frail participants (i.e., fr...
Source: Fight Aging! - August 21, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, July 24th 2023
In this study, we tested the hypothesis that periodontal disease (PD) as a source of infection alters inflammatory activation and Aβ phagocytosis by the microglial cells.
Experimental PD was induced using ligatures in C57BL/6 mice for 1, 10, 20, and 30 days to assess the progression of PD. Animals without ligatures were used as controls. Ligature placement caused progressive periodontal disease and bone resorption that was already significant on day 1 post-ligation and continued to increase until day 30. The severity of periodontal disease increased the frequency of activated microglia in the brains on day 30 by 36...
Source: Fight Aging! - July 23, 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
Looking Back at the Growth and Maturation of the Field of Aging Research
A great deal has changed in these last few decades in the field of aging research. From the 60s onward to the 90s, aging research was increasingly characterized by a philosophy of "look but don't touch", an effort to distance academia from the growing anti-aging industry and its hype. It made itself a backwater science in which talk of intervention was aggressively discouraged by leaders in the field. Starting in the 90s, with studies showing significant life extension in lower animals following single gene mutations, it became impossible to ignore the potential to treat aging as a medical condition in humans.
Nonet...
Source: Fight Aging! - June 9, 2023 Category: Research Authors: Reason Tags: Healthy Life Extension Community Source Type: blogs
Fight Aging! Newsletter, April 24th 2023
In this study, researchers show that mice lacking a functional ATF4 gene show little to no loss of grip strength and treadmill performance into late life; it is quite an impressive effect size. Assessments of muscle biochemistry do show age-related declines, but to a lesser degree than the controls. How ATF4 knockout functions to produce this outcome is an interesting question. The researchers point out a range of possible downstream and upstream targets that have been implicated in the regulation of muscle growth, but it will clearly require further work to identify the important mechanisms involved.
Aging slowly...
Source: Fight Aging! - April 23, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, March 20th 2023
This study also provides the potential for de novo generation of complex organs in vivo.
T Cells May Play a Role in the Brain Inflammation Characteristic of Neurodegenerative Conditions
https://www.fightaging.org/archives/2023/03/t-cells-may-play-a-role-in-the-brain-inflammation-characteristic-of-neurodegenerative-conditions/
Alzheimer's disease, and other forms of neurodegenerative condition, are characterized by chronic inflammation in brain tissue. Unresolved inflammatory signaling is disruptive of tissue structure and function. Here, researchers provide evidence for T cells to become involved in this...
Source: Fight Aging! - March 19, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Association between proteomic biomarkers and myocardial fibrosis measured by MRI: the multi-ethnic study of atherosclerosis
EBioMedicine. 2023 Feb 27;90:104490. doi: 10.1016/j.ebiom.2023.104490. Online ahead of print.ABSTRACTBACKGROUND: Cardiac magnetic resonance imaging (CMR) determines the extent of interstitial fibrosis, measured by increased extracellular volume (ECV), and replacement fibrosis with late gadolinium myocardial enhancement (LGE). Despite advances in detection, the pathophysiology of subclinical myocardial fibrosis is incompletely understood. Targeted proteomic discovery technologies enable quantification of low abundance circulating proteins to elucidate cardiac fibrosis mechanisms.METHODS: Using a cross-sectional design, we s...
Source: Atherosclerosis - March 1, 2023 Category: Cardiology Authors: Hooman Bakhshi Sam A Michelhaugh Scott A Bruce Stephen L Seliger Xiaoxiao Qian Bharath Ambale Venkatesh Vinithra Varadarajan Pramita Bagchi Joao A C Lima Christopher deFilippi Source Type: research
Fight Aging! Newsletter, February 13th 2023
This study investigated whether taller Polish adults live longer than their shorter counterparts. Data on declared height were available from 848,860 individuals who died in the years 2004-2008 in Poland. To allow for the cohort effect, the Z-values were generated. Separately for both sexes, Pearson's r coefficients of correlation were calculated. Subsequently, one way ANOVA was performed.
The correlation between adult height and longevity was negative and statistically significant in both men and women. After eliminating the effects of secular trends in height, the correlation was very weak (r = -0.0044 in men and ...
Source: Fight Aging! - February 12, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Ready, set, share: Researchers brace for new data-sharing rules
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Physiologist Alejandro Caicedo of the University of Miami Miller School of Medicine is preparing a grant proposal to the U.S. National Institutes of Health (NIH). He is feeling unusually stressed because of a new requirement that takes effect today. Along with his research idea, to study why islet cells in the pancreas stop making insulin in people with diabetes, he will be required to submit a plan for managing the data the project produces and sharing them in public repositories.
For his lab, that’s a daunting t...
Source: Science of Aging Knowledge Environment - January 25, 2023 Category: Geriatrics Source Type: research
Fight Aging! Newsletter, September 26th 2022
This study examined the dose-response association between daily step count and intensity and incidence of all-cause dementia among adults in the UK. This was a UK Biobank prospective population-based cohort study (February 2013 to December 2015) with 6.9 years of follow-up (data analysis conducted May 2022). A total of 78,430 of 103,684 eligible adults aged 40 to 79 years with valid wrist accelerometer data were included. Registry-based dementia was ascertained through October 2021.
We found no minimal threshold for the beneficial association of step counts with incident dementia. Our findings suggest that approxima...
Source: Fight Aging! - September 25, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, August 1st 2022
In this study, we used the recently released Infinium Mouse Methylation BeadChip to compare such epigenetic modifications in C57BL/6 (B6) and DBA/2J (DBA) mice. We observed marked differences in age-associated DNA methylation in these commonly used inbred mouse strains, indicating that epigenetic clocks for one strain cannot be simply applied to other strains without further verification. Interestingly, the CpGs with highest age-correlation were still overlapping in B6 and DBA mice and included the genes Hsf4, Prima1, Aspa, and Wnt3a. Furthermore, Hsf4, Aspa, and Wnt3a revealed highly significant age-associated DNA methyla...
Source: Fight Aging! - July 31, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Targeting cholesteryl ester accumulation in the heart improves cardiac insulin response
Biomed Pharmacother. 2022 Jun 13;152:113270. doi: 10.1016/j.biopha.2022.113270. Online ahead of print.ABSTRACTBACKGROUND: Antibodies against the P3 sequence (Gly1127-Cys1140) of LRP1 (anti-P3 Abs) specifically block cholesteryl ester (CE) accumulation in vascular cells. LRP1 is a key regulator of insulin receptor (InsR) trafficking in different cell types. The link between CE accumulation and the insulin response are largely unknown. Here, the effects of P3 peptide immunization on the alterations induced by a high-fat diet (HFD) in cardiac insulin response were evaluated.METHODS: Irrelevant (IrP)- or P3 peptide-immunized r...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - June 16, 2022 Category: Drugs & Pharmacology Authors: Virginia Actis Dato Aleyda Benitez-Amaro Eduardo Garcia Lene Claudi Maria Teresa LaChica Lho ëst Antoni Iborra Joan Carles Escola-Gil Jose Maria Guerra Valerie Samouillan Carlos Enrich Gustavo Chiabrando Vicenta Llorente-Cort és Source Type: research
