Renovascular disease induces mitochondrial damage in swine scattered tubular cells.

Conclusions: RVD in swine is associated with a higher prevalence of STCs, but induces structural and functional alterations in STC mitochondria, which impair their reparative potency. These observations suggest a key role for mitochondria in the renal reparative capacity of STCs. PMID: 31461348 [PubMed - as supplied by publisher]
Source: Am J Physiol Renal P... - Category: Urology & Nephrology Authors: Tags: Am J Physiol Renal Physiol Source Type: research

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In conclusion, a polypharmacology approach of combining established, prolongevity drug inhibitors of specific nodes may be the most effective way to target the nutrient-sensing network to improve late-life health. Deletion of p38α in Neurons Slows Neural Stem Cell Decline and Loss of Cognitive Function in Mice https://www.fightaging.org/archives/2019/10/deletion-of-p38%ce%b1-in-neurons-slows-neural-stem-cell-decline-and-loss-of-cognitive-function-in-mice/ Researchers here provide evidence for p38α to be involved in the regulation of diminished neural stem cell activity with age. It is thought...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Abstract Cellular damage produced by conditions generating oxidative stress have far-reaching implications in human disease that encompass, but are not restricted to aging, cardiovascular disease, type 2 diabetes, airway inflammation/asthma, cancer, and metabolic syndrome including visceral obesity, insulin resistance, fatty liver disease, and dyslipidemia. Although there are numerous sources and cellular targets of oxidative stress, this review will highlight literature that has investigated downstream consequences of oxidatively-induced DNA damage in both nuclear and mitochondrial genomes. The presence of such d...
Source: DNA Repair - Category: Genetics & Stem Cells Authors: Tags: DNA Repair (Amst) 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
Conclusions Two, Not Mutually Exclusive, Hypotheses We have reviewed and organized the literature with the intent of showing the existing parallels between excessive fat accumulation and the aging process. We have categorized these reports following what have been proposed to be the nine hallmarks of aging (21) (Figure 1). Based on the evidence, two distinct hypotheses can be proposed. One is that the cellular responses provoked by an excess of nutrients cause obesity, and that obesity is responsible for accelerating the pace of aging. Supporting this hypothesis are the observations that knocking out the fat-specific ins...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
Dominique E. Martin1,2, Amanda K. Jones1,3, Sambhu M. Pillai1,4, Maria L. Hoffman1,5, Katelyn K. McFadden1,6, Steven A. Zinn1, Kristen E. Govoni1 and Sarah A. Reed1* 1Department of Animal Science, University of Connecticut, Storrs, CT, United States 2Department of Psychology, Providence College, Providence, RI, United States 3Department of Pediatrics, School of Medicine, University of Colorado, Aurora, Aurora, CO, United States 4School of Medicine, Georgetown University, Washington, DC, United States 5Department of Fisheries, Animal and Veterinary Sciences, The University of Rhode Island, Kingston, RI, United St...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
Segun Fatumo1,2,3*, Tommy Carstensen4, Oyekanmi Nashiru3, Deepti Gurdasani4†, Manjinder Sandhu4,5† and Pontiano Kaleebu1,2† 1Uganda Medical Informatics Centre, MRC/UVRI and LSHTM Uganda Research Unit, Entebbe, Uganda 2London School of Hygiene and Tropical Medicine, London, United Kingdom 3H3Africa Bioinformatics Network (H3ABioNet) Node, Centre for Genomics Research and Innovation, NABDA/FMST, Abuja, Nigeria 4Human Genetics, Wellcome Sanger Institute, Hinxton, Cambridge, United Kingdom 5Division of Computational Medicine, Department of Medicine, University of Cambridge, Cambridge, United Kin...
Source: Frontiers in Genetics - Category: Genetics & Stem Cells Source Type: research
Ali Mahzari1, Songpei Li1, Xiu Zhou1,2, Dongli Li2, Sherouk Fouda1, Majid Alhomrani1, Wala Alzahrani1, Stephen R. Robinson1 and Ji-Ming Ye1,2* 1Lipid Biology and Metabolic Disease Laboratory, School of Health and Biomedical Sciences, RMIT University, Melbourne, VIC, Australia 2School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, China The present study investigated the effects of matrine on non-alcoholic steatohepatitis (NASH) in mice induced by a methionine choline-deficient (MCD) diet and the mechanism involved. The study was performed in C57B/6J mice fed a MCD diet for 6 weeks to induce NAS...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
Conclusion: Women had longer RTL and a higher step count compared to men. However, exercise volume and RTL correlated positively only in men. Surprisingly, age correlated negatively with RTL already within an age difference of 2 years. This suggests that telomere attrition rate may accelerate in older age. Moderate physical activity at the time of study was associated with RTL. Introduction Telomeres are looped structures located at the end of chromosomes, protecting our genomic DNA from degradation. Telomeric DNA consists of repetitive sequences of TTAGGG, common to all mammals (Aubert and Lansdorp, 2008). Double-...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
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
Conclusions In this review, we analyzed mechanisms through which mitobolites, a distinct set of mitochondria-generated metabolites, can be released from mitochondria and then act as second messengers that contribute to cellular and organismal aging by regulating longevity-defining processes outside of mitochondria. Our analysis indicates that in eukaryotes across phyla, these second messengers of cellular aging exhibit the following common features: (1) they are produced in mitochondria in response to certain changes in the nutrient, stress, proliferation or age status of the cell; it remains unknown, however, what kind o...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
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