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Rafael de Cabo

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https://www.readbyqxmd.com/read/29028259/stem-cell-transplantation-for-frailty
#1
David G Le Couteur, Rozalyn M Anderson, Anne B Newman, Rafael de Cabo
No abstract text is available yet for this article.
October 12, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28977341/caloric-restriction-study-design-limitations-in-rodent-and-nonhuman-primate-studies
#2
Kelli L Vaughan, Tamzin Kaiser, Robert Peaden, R Michael Anson, Rafael de Cabo, Julie A Mattison
For a century, we have known that caloric restriction influences aging in many species. However, only recently it was firmly established that the effect is not entirely dependent on the calories provided. Instead, rodent and nonhuman primate models have shown that the rate of aging depends on other variables, including the macronutrient composition of the diet, the amount of time spent in the restricted state, age of onset, the gender and genetic background, and the particular feeding protocol for the control group...
June 13, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28962651/hexokinases-link-dj-1-to-the-pink1-parkin-pathway
#3
David N Hauser, Adamantios Mamais, Melissa M Conti, Christopher T Primiani, Ravindran Kumaran, Allissa A Dillman, Rebekah G Langston, Alexandra Beilina, Joseph H Garcia, Alberto Diaz-Ruiz, Michel Bernier, Fabienne C Fiesel, Xu Hou, Wolfdieter Springer, Yan Li, Rafael de Cabo, Mark R Cookson
BACKGROUND: Early onset Parkinson's disease is caused by variants in PINK1, parkin, and DJ-1. PINK1 and parkin operate in pathways that preserve mitochondrial integrity, but the function of DJ-1 and how it relates to PINK1 and parkin is poorly understood. METHODS: A series of unbiased high-content screens were used to analyze changes at the protein, RNA, and metabolite level in rodent brains lacking DJ-1. Results were validated using targeted approaches, and cellular assays were performed to probe the mechanisms involved...
September 29, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28932108/cognitive-and-behavioral-evaluation-of-nutritional-interventions-in-rodent-models-of-brain-aging-and-dementia
#4
REVIEW
Devin Wahl, Sean Cp Coogan, Samantha M Solon-Biet, Rafael de Cabo, James B Haran, David Raubenheimer, Victoria C Cogger, Mark P Mattson, Stephen J Simpson, David G Le Couteur
Evaluation of behavior and cognition in rodent models underpins mechanistic and interventional studies of brain aging and neurodegenerative diseases, especially dementia. Commonly used tests include Morris water maze, Barnes maze, object recognition, fear conditioning, radial arm water maze, and Y maze. Each of these tests reflects some aspects of human memory including episodic memory, recognition memory, semantic memory, spatial memory, and emotional memory. Although most interventional studies in rodent models of dementia have focused on pharmacological agents, there are an increasing number of studies that have evaluated nutritional interventions including caloric restriction, intermittent fasting, and manipulation of macronutrients...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28649426/conserved-and-species-specific-molecular-denominators-in-mammalian-skeletal-muscle-aging
#5
Evi M Mercken, Miriam Capri, Bethany A Carboneau, Maria Conte, Juliana Heidler, Aurelia Santoro, Alejandro Martin-Montalvo, Marta Gonzalez-Freire, Husam Khraiwesh, José A González-Reyes, Ruin Moaddel, Yongqing Zhang, Kevin G Becker, José M Villalba, Julie A Mattison, Ilka Wittig, Claudio Franceschi, Rafael de Cabo
Aging is a complex phenomenon involving functional decline in multiple physiological systems. We undertook a comparative analysis of skeletal muscle from four different species, i.e. mice, rats, rhesus monkeys, and humans, at three different representative stages during their lifespan (young, middle, and old) to identify pathways that modulate function and healthspan. Gene expression profiling and computational analysis revealed that pathway complexity increases from mice to humans, and as mammals age, there is predominantly an upregulation of pathways in all species...
2017: NPJ Aging and Mechanisms of Disease
https://www.readbyqxmd.com/read/28610949/calorie-restriction-in-rodents-caveats-to-consider
#6
REVIEW
Donald K Ingram, Rafael de Cabo
The calorie restriction paradigm has provided one of the most widely used and most useful tools for investigating mechanisms of aging and longevity. By far, rodent models have been employed most often in these endeavors. Over decades of investigation, claims have been made that the paradigm produces the most robust demonstration that aging is malleable. In the current review of the rodent literature, we present arguments that question the robustness of the paradigm to increase lifespan and healthspan. Specifically, there are several questions to consider as follows: (1) At what age does CR no longer produce benefits? (2) Does CR attenuate cognitive decline? (3) Are there negative effects of CR, including effects on bone health, wound healing, and response to infection? (4) How important is schedule of feeding? (5) How long does CR need to be imposed to be effective? (6) How do genotype and gender influence CR? (7) What role does dietary composition play? Consideration of these questions produce many caveats that should guide future investigations to move the field forward...
October 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28603085/kaempferol-increases-levels-of-coenzyme-q-in-kidney-cells-and-serves-as-a-biosynthetic-ring-precursor
#7
Lucía Fernández-Del-Río, Anish Nag, Elena Gutiérrez Casado, Julia Ariza, Agape M Awad, Akil I Joseph, Ohyun Kwon, Eric Verdin, Rafael de Cabo, Claus Schneider, Jorge Z Torres, María I Burón, Catherine F Clarke, José M Villalba
Coenzyme Q (Q) is a lipid-soluble antioxidant essential in cellular physiology. Patients with Q deficiencies, with few exceptions, seldom respond to treatment. Current therapies rely on dietary supplementation with Q10, but due to its highly lipophilic nature, Q10 is difficult to absorb by tissues and cells. Plant polyphenols, present in the human diet, are redox active and modulate numerous cellular pathways. In the present study, we tested whether treatment with polyphenols affected the content or biosynthesis of Q...
September 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28549083/a-comparison-of-two-mouse-frailty-assessment-tools
#8
Alice E Kane, Aniko Huizer-Pajkos, John Mach, Sarah J Mitchell, Rafael de Cabo, David G Le Couteur, Susan E Howlett, Sarah N Hilmer
The mouse clinical frailty index and the mouse frailty phenotype assessment are two recently developed tools used to assess frailty in mice. The objectives of this study were to investigate whether the same mice are identified as frail with both tools and to examine the association of each of the assessment tools with age and frailty-related outcomes. Frailty was measured using both tools in old (~24 months; n = 36) C57BL/6 male mice. After 2 weeks, blood pressure and heart rate were measured and serum samples were collected for analysis of alanine aminotransferase, creatinine, and albumin levels...
July 1, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28487241/influence-of-anaerobic-and-aerobic-exercise-on-age-related-pathways-in-skeletal-muscle
#9
Ignacio Navas-Enamorado, Michel Bernier, Gloria Brea-Calvo, Rafael de Cabo
No abstract text is available yet for this article.
August 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28403379/effect-of-resveratrol-on-walking-performance-in-older-people-with-peripheral-artery-disease-the-restore-randomized-clinical-trial
#10
Mary M McDermott, Christiaan Leeuwenburgh, Jack M Guralnik, Lu Tian, Robert Sufit, Lihui Zhao, Michael H Criqui, Melina R Kibbe, James H Stein, Donald Lloyd-Jones, Stephen D Anton, Tamar S Polonsky, Ying Gao, Rafael de Cabo, Luigi Ferrucci
Importance: Research shows that resveratrol, a sirtuin activator in red wine, improves exercise endurance and skeletal-muscle oxidative metabolism in animals and may enhance vascular function in humans. Resveratrol supplement sales exceed $30 million annually in the United States, but few data are available regarding its efficacy in humans. Objective: To determine whether resveratrol, 125 mg/d or 500 mg/d, improves the 6-minute walk performance in patients with peripheral artery disease (PAD)...
August 1, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/28329314/sirt1-polymorphisms-and-serum-induced-sirt1-protein-expression-in-aging-and-frailty-the-champ-study
#11
Shajjia Razi, Victoria C Cogger, Marina Kennerson, Vicky L Benson, Aisling C McMahon, Fiona M Blyth, David J Handelsman, Markus J Seibel, Vasant Hirani, Vasikaran Naganathan, Louise Waite, Rafael de Cabo, Robert G Cumming, David G Le Couteur
The nutrient sensing protein, SIRT1 influences aging and nutritional interventions such as caloric restriction in animals, however, the role of SIRT1 in human aging remains unclear. Here, the role of SIRT1 single-nucleotide polymorphisms (SNPs) and serum-induced SIRT1 protein expression (a novel assay that detects circulating factors that influence SIRT1 expression in vitro) were studied in the Concord Health and Ageing in Men Project (CHAMP), a prospective cohort of community dwelling men aged 70 years and older...
July 1, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28133767/the-human-longevity-gene-homolog-indy-and-interleukin-6-interact-in-hepatic-lipid-metabolism
#12
Christian von Loeffelholz, Stefanie Lieske, Frank Neuschäfer-Rube, Diana M Willmes, Nathanael Raschzok, Igor M Sauer, Jörg König, Martin F Fromm, Paul Horn, Antonios Chatzigeorgiou, Andrea Pathe-Neuschäfer-Rube, Jens Jordan, Andreas F H Pfeiffer, Geltrude Mingrone, Stefan R Bornstein, Peter Stroehle, Christoph Harms, F Thomas Wunderlich, Stephen L Helfand, Michel Bernier, Rafael de Cabo, Gerald I Shulman, Triantafyllos Chavakis, Gerhard P Püschel, Andreas L Birkenfeld
Reduced expression of the Indy ("I am Not Dead, Yet") gene in lower organisms promotes longevity in a manner akin to caloric restriction. Deletion of the mammalian homolog of Indy (mIndy, Slc13a5) encoding for a plasma membrane-associated citrate transporter expressed highly in the liver, protects mice from high-fat diet-induced and aging-induced obesity and hepatic fat accumulation through a mechanism resembling caloric restriction. We studied a possible role of mIndy in human hepatic fat metabolism. In obese, insulin-resistant patients with nonalcoholic fatty liver disease, hepatic mIndy expression was increased and mIndy expression was also independently associated with hepatic steatosis...
August 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28094793/caloric-restriction-improves-health-and-survival-of-rhesus-monkeys
#13
Julie A Mattison, Ricki J Colman, T Mark Beasley, David B Allison, Joseph W Kemnitz, George S Roth, Donald K Ingram, Richard Weindruch, Rafael de Cabo, Rozalyn M Anderson
Caloric restriction (CR) without malnutrition extends lifespan and delays the onset of age-related disorders in most species but its impact in nonhuman primates has been controversial. In the late 1980s two parallel studies were initiated to determine the effect of CR in rhesus monkeys. The University of Wisconsin study reported a significant positive impact of CR on survival, but the National Institute on Aging study detected no significant survival effect. Here we present a direct comparison of longitudinal data from both studies including survival, bodyweight, food intake, fasting glucose levels and age-related morbidity...
January 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28076763/osteocalcin-signaling-in-myofibers-is-necessary-and-sufficient-for-optimum-adaptation-to-exercise
#14
Paula Mera, Kathrin Laue, Mathieu Ferron, Cyril Confavreux, Jianwen Wei, Marta Galán-Díez, Alain Lacampagne, Sarah J Mitchell, Julie A Mattison, Yun Chen, Justine Bacchetta, Pawel Szulc, Richard N Kitsis, Rafael de Cabo, Richard A Friedman, Christopher Torsitano, Timothy E McGraw, Michelle Puchowicz, Irwin Kurland, Gerard Karsenty
No abstract text is available yet for this article.
January 10, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/27923032/spermidine-to-the-rescue-for-an-aging-heart
#15
Rafael de Cabo, Pácido Navas
No abstract text is available yet for this article.
December 6, 2016: Nature Medicine
https://www.readbyqxmd.com/read/27921031/amniotic-epithelial-cells-a-new-tool-to-combat-aging-and-age-related-diseases
#16
Clara Di Germanio, Michel Bernier, Rafael de Cabo, Barbara Barboni
The number of elderly people is growing at an unprecedented rate and this increase of the aging population is expected to have a direct impact on the incidence of age-related diseases and healthcare-associated costs. Thus, it is imperative that new tools are developed to fight and slow age-related diseases. Regenerative medicine is a promising strategy for the maintenance of health and function late in life; however, stem cell-based therapies face several challenges including rejection and tumor transformation...
2016: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/27875656/involvement-of-c-jun-n-terminal-kinase-in-tnf-%C3%AE-driven-remodeling
#17
Irene M J Eurlings, Niki L Reynaert, Cheryl van de Wetering, Scott W Aesif, Evi M Mercken, Rafael de Cabo, Jos L van der Velden, Yvonne M Janssen-Heininger, Emiel F M Wouters, Mieke A Dentener
Lung tissue remodeling in chronic obstructive pulmonary disease (COPD) is characterized by airway wall thickening and/or emphysema. Although the bronchial and alveolar compartments are functionally independent entities, we recently showed comparable alterations in matrix composition comprised of decreased elastin content and increased collagen and hyaluronan contents of alveolar and small airway walls. Out of several animal models tested, surfactant protein C (SPC)-TNF-α mice showed remodeling in alveolar and airway walls similar to what we observed in patients with COPD...
March 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/27822024/animal-models-of-frailty-current-applications-in-clinical-research
#18
REVIEW
Alice E Kane, Sarah N Hilmer, John Mach, Sarah J Mitchell, Rafael de Cabo, Susan E Howlett
The ethical, logistical, and biological complications of working with an older population of people inherently limits clinical studies of frailty. The recent development of animal models of frailty, and tools for assessing frailty in animal models provides an invaluable opportunity for frailty research. This review summarizes currently published animal models of frailty including the interleukin-10 knock-out mouse, the mouse frailty phenotype assessment tool, and the mouse clinical frailty index. It discusses both current and potential roles of these models in research into mechanisms of frailty, interventions to prevent/delay frailty, and the effect of frailty on outcomes...
2016: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/27737375/the-impact-of-the-use-of-different-types-of-gloves-and-bare-hands-for-preparation-of-clean-surgical-instruments
#19
Camila Quartim de Moraes Bruna, Rafael Queiroz de Souza, Irineu Francisco Silva Massaia, Áurea Silveira Cruz, Kazuko Uchikawa Graziano
Objectives: to determine if there are differences on the safety of the preparation of clean surgical instruments using different types of gloves and bare hands and evaluate the microbiological load of these preparations without gloves. Method: laboratory procedure with a pragmatic approach, in which the samples were handled with different types of gloves and bare hands. In addition, cytotoxicity assays were carried out by means of the agar diffusion method. Further samples were subjected to microbiological analysis after being handled without gloves...
October 10, 2016: Revista Latino-americana de Enfermagem
https://www.readbyqxmd.com/read/27714847/the-effects-of-aging-and-sex-steroid-deficiency-on-the-murine-skeleton-are-independent-and-mechanistically-distinct
#20
Serra Ucer, Srividhya Iyer, Ha-Neui Kim, Li Han, Christine Rutlen, Kelly Allison, Jeff D Thostenson, Rafael de Cabo, Robert L Jilka, Charles O'Brien, Maria Almeida, Stavros C Manolagas
Old age and sex steroid deficiency are the two most critical factors for the development of osteoporosis. It remains unknown, however, whether the molecular culprits of the two conditions are similar or distinct. We show herein that at 19.5 months of age-a time by which the age-dependent decline of cortical and cancellous bone mass and cortical porosity were fully manifested in C57BL/6J mice-these animals remained functionally estrogen sufficient. Transgenic mice with conditional expression of mitochondria-targeted catalase-a potent H2 O2 inactivating enzyme-in cells of the myeloid lineage (mitoCAT;LysM-Cre mice) were protected from the loss of cortical, but not cancellous, bone caused by gonadectomy in either sex...
March 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
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