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Total 185 results found since Jan 2013.
Quiz: Sepsis Science
Bacteria are the most common triggers of sepsis.Credit: Mark Ellisman and Thomas Deerinck, National Center for Microscopy and Imaging Research, University of California San Diego.
At least 1.7 million adults in the United States develop a life-threatening condition called sepsis each year. Sepsis is an overwhelming or impaired whole-body immune response that’s most often caused by bacterial infections. However, it can also be caused by viral infections, such as COVID-19 or influenza; fungal infections; or other injuries, including physical trauma. Anyone can get sepsis, but there’s a higher risk ...
Source: Biomedical Beat Blog - National Institute of General Medical Sciences - September 13, 2023 Category: Research Authors: Chrissa Chverchko Tags: Being a Scientist Injury and Illness Quiz Research Roundup Sepsis 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
A High Level Popular Science View of the Longevity Industry
The article I'll point out today is an entirely unremarkable, high level tour of the most discussed, most notable portions of the longevity industry and related research efforts. Twenty years ago, we'd all have been delighted to see the media both noticing translational aging research at all, and then actually taking seriously the prospect of treating aging as a medical condition. We've come a long way to now see summary discussions of work on the treatment of aging as business as usual, not really worth mentioning. Still, articles like this miss near all of the really interesting projects, and that is the way of high leve...
Source: Fight Aging! - September 5, 2023 Category: Research Authors: Reason Tags: Healthy Life Extension Community 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 ce...
Source: Fight Aging! - September 3, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
More Evidence for Vaccination to Reduce Alzheimer ' s Disease Risk
There is good evidence for the various forms of later life vaccination, such as for herpes zoster or influenza, to reduce the risk of later suffering Alzheimer's disease. One possibility is that people who take the time to obtain a vaccine tend to take better care of their health across the board. Another possibility is that vaccination produces a trained immunity effect that dampens age-related inflammation for a sustained period of time. It may also be the case that suffering from influenza, pneumonia, or similar infectious diseases causes sufficient additional inflammation to move the odds on suffering later neurodegene...
Source: Fight Aging! - August 28, 2023 Category: Research Authors: Reason Tags: Daily News 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's...
Source: Fight Aging! - July 16, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Senolytic Treatment Fails to Improve Measures of the Immune Response to Influenza in Old Mice
At this point in the development of senolytic therapies to clear harmful, lingering senescent cells from aged tissues, it is more interesting to find an aspect of aging that isn't improved by removal of senescent cells than to continue adding to the long list of age-related conditions and dysfunctions that are meaningfully reversed by senescent cell clearance. Here, researchers show that measures of the immune response to influenza infection in mice are not improved followed treatment with the senolytic combination of dasatinib and quercetin. This is a perhaps surprising result, given the expectation based on evidence to d...
Source: Fight Aging! - July 12, 2023 Category: Research Authors: Reason Tags: Daily News 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 year...
Source: Fight Aging! - June 4, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
To Improve Vaccination in the Elderly, Target Mechanisms of Aging
That vaccinations decline in effectiveness with advancing age is only one of countless ways in which the underlying mechanisms of aging collectively harm health and resilience in later life. If the urge to improve vaccination efficacy in older individuals turns out to be a major contribution to driving greater investment in the development of means of rejuvenation, therapies that target the causes of aging, then the benefits will extend far beyond this narrow goal.
Despite the availability of flu vaccines formulated to better protect older adults, older adults remain disproportionally at-risk for severe infection,...
Source: Fight Aging! - May 30, 2023 Category: Research Authors: Reason Tags: Daily News 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
Sufficient Physical Activity Correlates With a Halving of the Risk of Influenza Mortality
Analysis of a large epidemiological database here shows that sufficient exercise correlates with a halving of the risk of mortality due to influenza. Like many other studies, it also shows that too much exercise may be harmful, actually increasing the risk of mortality. While correlation does not imply causation, there is plenty of evidence for physical fitness and physical activity to reduce impacts of aging related to immune function. Alternative explanations revolve around the tendency of more robust individuals to conduct more exercise, while also tending to be more resilient independently of the effects of exercise.
...
Source: Fight Aging! - May 24, 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, 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
Viral Infection in Middle Age Correlates with Later Dementia Risk
A range of evidence suggests that persistent viral infection contributes to the risk of suffering neurodegenerative conditions such as Alzheimer's disease. This may be due to mechanisms relating to amyloid-β accumulation, in its role as an anti-microbial peptide, a part of the innate immune system. It may have more to do with lasting chronic inflammation subsequent to infection. Researchers here note another addition to the epidemiological data on this topic, in this case linking severe infections requiring hospitalization with later dementia risk. The effect sizes here are large and last for a long time following infecti...
Source: Fight Aging! - February 10, 2023 Category: Research Authors: Reason Tags: Daily News Source Type: blogs
Aging as a Disease: a Zoo Contains Animals, But is Not Itself an Animal
The author of today's open access commentary is quite prolifically opinionated on the topic of mTOR and its status as a central pillar of programmed aging, particularly the hyperfunction version of programmed aging theories. Nonetheless, he sometimes has interesting things to say, as is the case here on the topic of whether aging is a disease. A great deal of ink has been spilled of late on the question of whether or not aging is a disease. This is the case not because everyone suddenly developed an interest in semantics, but rather because it directly affects the regulation of medical development, and thus the flow of fun...
Source: Fight Aging! - February 6, 2023 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
