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Total 151 results found since Jan 2013.

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, 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 Levels of PLG...
Source: Fight Aging! - May 21, 2023 Category: Research Authors: Reason Tags: Newsletters 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

Reviewing the Aging of the Gut Microbiome
Researchers here take a high level tour of what is known of age-related changes in the gut microbiome and how they influence health. Accumulating evidence shows a loss of beneficial populations that generate useful metabolites such as butyrate, accompanied by an increase in harmful populations that can provoke chronic inflammation. This is a likely a meaningful contribution to the onset and development age-related conditions, making it a priority to develop ways to reset the balance of populations in the gut microbiome. The best of the available approaches, given the evidence to date, is fecal microbiota transplantation fr...
Source: Fight Aging! - April 18, 2023 Category: Research Authors: Reason Tags: Daily News Source Type: blogs

Fight Aging! Newsletter, April 17th 2023
In conclusion, oral NR altered the gut microbiota in rats and mice, but not in humans. In addition, NR attenuated body fat mass gain in rats, and increased fat and energy absorption in the HFD context. Glycine Supplementation as a Methionine Restriction Mimetic https://www.fightaging.org/archives/2023/04/glycine-supplementation-as-a-methionine-restriction-mimetic/ Supplementation with the non-essential amino acid glycine has been shown to modestly slow aging in short-lived laboratory species. In today's open access review paper, researchers note glycine supplementation as essentially a calorie restrictio...
Source: Fight Aging! - April 16, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Attracting birds to your garden
Sciencebase reader Michelle messaged to ask how she might attract more birds to her garden. There are plenty of things she can try to see more of our feathered friends on her patch. Some things will have an almost immediate effect others might take a little longer. The rewards are always worth the effort to see the variety and numbers of birds that can appear. I have an article about the birds you might see in an English country garden. Blue Tit What to do The most obvious thing to do is to ask what the birds need and then try to fulfill those needs: water, food, shelter/cover, somewhere to nest. So, you could put out a co...
Source: David Bradley Sciencebase - Songs, Snaps, Science - April 14, 2023 Category: Science Authors: David Bradley Tags: Birds Source Type: blogs

Fight Aging! Newsletter, April 3rd 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! - April 2, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Fight Aging! Newsletter, January 30th 2023
In conclusion, deletion of p16Ink4a cells did not negatively impact beta-cell mass and blood glucose under basal and HFD conditions and proliferation was restored in a subset of HFD mice opening further therapeutic targets in the treatment of diabetes. Communication Between Blood and Brain in Aging and Rejuvenation https://www.fightaging.org/archives/2023/01/communication-between-blood-and-brain-in-aging-and-rejuvenation/ As noted here, joining the circulatory systems of an old and young mouse results in some degree of rejuvenation in the old mouse. Where brain function is improved, researchers are inter...
Source: Fight Aging! - January 29, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Fight Aging! Newsletter, December 26th 2022
This article on senolytic therapies to selectively remove senescent cells in old tissues is in part a matter of Unity Biotechnology talking up their position. The company suffered from first mover disadvantage in bringing senolytic drugs into clinical development. The field has made progress very rapidly over the last decade, and startups founded even just a couple of years after Unity's launch benefited from greater knowledge and a selection of better technologies to work with. Still, one can be talking up one's position and also be right. The accumulation of senescent cells is profoundly harmful, a significant contributi...
Source: Fight Aging! - December 25, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Enhancer DNA Sequence from Zebrafish Can Induce Targeted Heart Regeneration in Mice
This very interesting work involves identifying enhancer DNA sequences that regulate regeneration in an exceptionally regenerative species, such as zebrafish, and introducing these sequences into mammals via gene therapy. The researchers find a sequence that can be used to regulate expression of genes that drive heart regeneration following injury, a desirable goal given that mammalian hearts regenerate poorly. Zebrafish are capable of scarless healing of heart injuries, and connecting the zebrafish enhancer to mammalian growth genes can improve regeneration, by expressing these genes at the appropriate time in the context...
Source: Fight Aging! - December 21, 2022 Category: Research Authors: Reason Tags: Daily News Source Type: blogs

Fight Aging! Newsletter, October 17th 2022
This study investigated whether multimorbidity is associated with incident dementia and whether associations vary by different clusters of disease and genetic risk for dementia. The study used data from the UK Biobank cohort, with baseline data collected between 2006 and 2010 and with up to 15 years of follow-up. Participants included women and men without dementia and aged at least 60 years at baseline. The presence of at least 2 long-term conditions from a preselected list of 42 conditions was used to define multimorbidity. A total of 206,960 participants (mean age 64.1 years) were included in the final sample, of...
Source: Fight Aging! - October 16, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Weekly Overseas Health IT Links –10th September, 2022.
This article is adapted fromVoices in the Code: A Story About People, Their Values, and the Algorithm They Made,out Sept. 8 from Russell Sage Foundation Press.In May 2021, I got a call I never expected. I was working on abook about A.I. ethics, focused on the algorithm that gives out kidneys to transplant patients in the United States. Darren Stewart —a data scientist from UNOS, the nonprofit that runs the kidney allocation process—was calling to get my take: How many decimal places should they include when calculating each patient’s allocation score? The score is an incredibly important number, given it determines w...
Source: Australian Health Information Technology - September 10, 2022 Category: Information Technology Authors: Dr David G More MB PhD Source Type: blogs

Fight Aging! Newsletter, August 15th 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: 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! - August 14, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Fight Aging! Newsletter, April 25th 2022
We examined central genetic and environmental lifespan regulators (putative anti-aging interventions, PAAIs; the following PAAIs were examined: mTOR loss-of-function, loss-of-function in growth hormone signaling, dietary restriction) for a possible countering of the signs and symptoms of aging. Importantly, in our study design, we included young treated groups of animals, subjected to PAAIs prior to the onset of detectable age-dependent phenotypic change. In parallel to our studies in mice, we assessed genetic variants for their effects on age-sensitive phenotypes in humans. We observed that, surprisingly, many PAAI...
Source: Fight Aging! - April 24, 2022 Category: Research Authors: Reason Tags: Daily News Source Type: blogs

Fight Aging! Newsletter, March 14th 2022
This study tests the feasibility of chronically elevating skeletal muscle NAD+ in mice and investigates the putative effects on mitochondrial respiratory capacity, insulin sensitivity, and gene expression. The metabolic effects of NR and PT treatment were modest. We conclude that the chronic elevation of skeletal muscle NAD+ by the intravenous injection of NR is possible but does not affect muscle respiratory capacity or insulin sensitivity in either sedentary or physically active mice. Our data have implications for NAD+ precursor supplementation regimens. Muscle Strengthening Activities in Later Life Correlate ...
Source: Fight Aging! - March 13, 2022 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs