An Educational Article on the Business of Selling Nicotinamide Riboside

Readers here probably recall the hype surrounding sirtuins in cellular metabolism, followed by the breathless marketing of compounds supposed to affect their expression such as resveratrol, all of which went to the usual destination for such things, which is to say nowhere. Some knowledge was added to the grand map of mammalian biochemistry, some people were fleeced, some people made a bunch of money on the backs of promises that never materialized, and that was that. This happens over and again. Every time a new link is uncovered in the complex chain of protein machinery relating to cellular repair mechanisms, upregulated in many of the ways to extend life in lower animals, or calorie restriction, a practice that extends life in short-lived mammals such as mice, and along the way alters near every aspect of the operation of metabolism, then the marketing begins for any supplement that can be linked, tenuously or otherwise, to that research. If you recognize the general pattern, then you should be well placed to see how things will play out for nicotinamide riboside. This is yet another molecule that can be used as a supplement, and which influences some of the mitochondrial biochemistry associated with cellular maintenance processes. In mice it has been shown to modestly reduce some forms of age-related decline, either by spurring greater maintenance or greater stem cell activity. It is an open question as how much of this will be recapitulated in humans; short-lived ...
Source: Fight Aging! - Category: Research Authors: Tags: Of Interest Source Type: blogs

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I recently attended the second Ending Age-Related Diseases conference in New York, hosted by the Life Extension Advocacy Foundation (LEAF). The mix of attendees was much the same as last year: an even split between scientists, entrepreneurs, investors, patient advocates, and interested onlookers, all focused on the treatment of aging as a medical condition. The presentations were similarly a mix of scientists talking about their research programs, entrepreneurs presenting on the data produced by their companies, and investors discussing the state of the industry. For my part, I have already presented several times t...
Source: Fight Aging! - Category: Research Authors: Tags: Healthy Life Extension Community Source Type: blogs
In this study, we identify a link between members of the genus Veillonella and exercise performance. We observed an increase in Veillonella relative abundance in marathon runners postmarathon and isolated a strain of Veillonella atypica from stool samples. Inoculation of this strain into mice significantly increased exhaustive treadmill run time. Veillonella utilize lactate as their sole carbon source, which prompted us to perform a shotgun metagenomic analysis in a cohort of elite athletes, finding that every gene in a major pathway metabolizing lactate to propionate is at higher relative abundance postexercise. Us...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Abstract Ischemic heart disease is the leading cause of death worldwide. Stem cell therapy to repair and regenerate the infarcted myocardium is a promising approach to address this unmet medical need. However, the poor survival of transplanted cells in the hostile ischemic myocardium has been a major hurdle in achieving an effective cell therapy against myocardial infarction. As such, novel strategies to promote the survival of transplanted cells are highly sought after. Mitochondria are intimately involved in cell survival and have been the main organelles being targeted for cytoprotection. Mitochondrial morpholo...
Source: Mol Biol Cell - Category: Molecular Biology Authors: Tags: Methods Mol Biol Source Type: research
In this study, we determine whether transient reintroduction of embryonic stem cell cycle miR-294 promotes cardiomyocyte cell cycle reentry enhancing cardiac repair after myocardial injury. A doxycycline-inducible AAV9-miR-294 vector was delivered to mice for activating miR-294 in myocytes for 14 days continuously after myocardial infarction. miR-294-treated mice significantly improved left ventricular functions together with decreased infarct size and apoptosis 8 weeks after MI. Myocyte cell cycle reentry increased in miR-294 hearts parallel to increased small myocyte number in the heart. Isolated adult myocytes from miR-...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
This study sought to investigate what could be learned from how these men have fared. The men were born in 1925-1928 and similar health-related data from questionnaires, physical examination, and blood samples are available for all surveys. Survival curves over various variable strata were applied to evaluate the impact of individual risk factors and combinations of risk factors on all-cause deaths. At the end of 2018, 118 (16.0%) of the men had reached 90 years of age. Smoking in 1974 was the strongest single risk factor associated with survival, with observed percentages of men reaching 90 years being 26.3, 25.7, ...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
The Long Long Life team will be putting together a set of videos in the months ahead, one for each of the Hallmarks of Aging. The first to be published covers the hallmark of DNA damage, stochastic mutational change to nuclear DNA that is widely thought to make a meaningful contribution to the dysregulation of cell behavior in aging. This is evidently the case for cancer risk, as cancer is caused by mutations that enable rampant, unregulated growth, but may only be important otherwise when mutations occur in stem cells or progenitor cells that are able to propagate the mutations widely in tissues. The Hallmarks of A...
Source: Fight Aging! - Category: Research Authors: Tags: Activism, Advocacy and Education Source Type: blogs
In this study, analysis of antioxidant defense was performed on the blood samples from 184 "aged" individuals aged 65-90+ years, and compared to the blood samples of 37 individuals just about at the beginning of aging, aged 55-59 years. Statistically significant decreases of Zn,Cu-superoxide dismutase (SOD-1), catalase (CAT), and glutathione peroxidase (GSH-Px) activities were observed in elderly people in comparison with the control group. Moreover, an inverse correlation between the activities of SOD-1, CAT, and GSH-Px and the age of the examined persons was found. No age-related changes in glutathione reductas...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Fight Aging! provides a weekly digest of news and commentary for thousands of subscribers interested in the latest longevity science: progress towards the medical control of aging in order to prevent age-related frailty, suffering, and disease, as well as improvements in the present understanding of what works and what doesn't work when it comes to extending healthy life. Expect to see summaries of recent advances in medical research, news from the scientific community, advocacy and fundraising initiatives to help speed work on the repair and reversal of aging, links to online resources, and much more. This content is...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
In conclusion, there is solid evidence that obesity deregulates cellular mechanisms related to nutrient sensing. Altered Intercellular Communication It is accepted that aging impacts the organism at the cellular level, but also decreases the capacity of cells of an organism to interact. During aging, there is a decreased communication at the neuronal, neuroendocrine, and endocrine levels. Two of the most compelling examples of impaired communication are inflammaging and immunosenescence. The inflammaging phenotype results in elevated cytokines. These cytokines can accelerate and propagate the aging process. T...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
In this study, we found that cofilin competes with tau for direct microtubule binding in vitro, in cells, and in vivo, which inhibits tau-induced microtubule assembly. Genetic reduction of cofilin mitigates tauopathy and synaptic defects in Tau-P301S mice and movement deficits in tau transgenic C. elegans. The pathogenic effects of cofilin are selectively mediated by activated cofilin, as active but not inactive cofilin selectively interacts with tubulin, destabilizes microtubules, and promotes tauopathy. These results therefore indicate that activated cofilin plays an essential intermediary role in neurotoxic signaling th...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
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