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Experimental Gerontology

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https://www.readbyqxmd.com/read/29782967/deficient-mitochondrial-biogenesis-in-il-2-activated-nk-cells-correlates-with-impaired-pgc1-%C3%AE-upregulation-in-elderly-humans
#1
Dante Miranda, Claudia Jara, Sophia Mejias, Viviana Ahumada, Marcelo Cortez-San Martin, Jorge Ibañez, Sandra Hirsch, Margarita Montoya
Immunosenescence has been described as age-associated changes in the immune function which are thought to be responsible for the increased morbidity with age. Human Natural Killer (NK) cells are a specialized heterogeneous subpopulation of lymphocytes involved in immune defense against tumor and microbial diseases. Interestingly, aging-related NK cell dysfunction is associated with features of aging such as tumor incidence, reduced vaccination efficacy, and short survival due to infection. It is known that NK cell effector functions are critically dependent on cytokines and metabolic activity...
May 18, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29778642/benefits-of-a-multicomponent-falls-unit-based-exercise-program-in-older-adults-with-falls-in-real-life
#2
Rafael García Molina, Marta Carolina Ruíz Grao, Alicia Noguerón García, Marta Martínez Reig, Mariano Esbrí Víctor, Míkel Izquierdo Redín, Pedro Abizanda Soler
BACKGROUND/OBJECTIVES: Multicomponent exercise programs are the cornerstone in preventing gait and balance impairments and falls in older adults. However, the effects of these programs in usual clinical practice have been poorly analyzed. DESIGN: 4-Month, twice-a-week multicomponent exercise program cohort study in real-life. SETTING: Falls Unit, Complejo Hospitalario Universitario of Albacete, Spain. PARTICIPANTS: Sixty-seven participants who had experienced a fall in the previous year were included...
May 17, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29775747/mediterranean-diet-and-depression-among-older-individuals-the-multinational-medis-study
#3
Maria F Masana, Josep Maria Haro, Anargiros Mariolis, Suzanne Piscopo, Giuseppe Valacchi, Vassiliki Bountziouka, Foteini Anastasiou, Akis Zeimbekis, Dimitra Tyrovola, Efthimios Gotsis, George Metallinos, Anna Polystipioti, Josep-Antoni Tur, Antonia-Leda Matalas, Christos Lionis, Evangelos Polychronopoulos, Labros S Sidossis, Stefanos Tyrovolas, Demosthenes B Panagiotakos
BACKGROUND: Depression has been linked to a large and growing economic and societal burden worldwide. In Europe, depression is one of the most frequent mental disorders across all age groups, but particularly in people aged 65 years and over, and higher depressive symptoms have been reported among individuals with chronic diseases (e.g., diabetes and heart disease). AIM: To evaluate the role of adherence to the Mediterranean diet (MedDiet) in depression in a sample of older people living in the Mediterranean basin...
May 15, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29775746/anthropometric-measurements-and-mortality-in-frail-older-adults
#4
Jonathan F Easton, Christopher R Stephens, Heriberto Román-Sicilia, Matteo Cesari, Mario Ulises Pérez-Zepeda
BACKGROUND: As the number of older adults increases, so does the number of frail older adults. Although anthropometry has been widely used as a way to stratify the overall mortality risk of a person, the significance of these measurements becomes blurred in the case of frail older adults who have changes in body composition. Therefore, the aim of this study is to determine the association of anthropometric measurements (body mass index, knee-adjusted height body mass index, waist-to-hip ratio and calf circumference) with mortality risk in a group of older Mexican adults...
May 15, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29775745/analysis-of-neurotrophic-and-antioxidant-factors-related-to-midbrain-dopamine-neuronal-loss-and-brain-inflammation-in-the-cerebrospinal-fluid-of-the-elderly
#5
Angel Martin-de-Pablos, Antonio Córdoba-Fernández, Emilio Fernández-Espejo
Midbrain dopamine neuronal loss and neuroinflammation are two phenomena that are associated with brain senescence. Neurotrophic factor changes and oxidative stress could subserve these phenomena. Aging-related brain changes can be well monitored through the cerebrospinal fluid (CSF). The objective was to analyze neurotrophic and oxidative parameters that could be related to midbrain dopamine neuronal loss or brain inflammation in the CSF of elderly subjects: 1) levels of the dopaminotrophic factors BDNF, GDNF, persephin, and neurturin, 2) levels of the proinflammatory factors TGFβ1 and TGFβ2 ; 3) activity of main antioxidant enzymes (catalases, glutathione-peroxidase, glutathione-reductase, glutathione-S-transferases, peroxirredoxins, and superoxide-dismutases), 4) ferritin content, antioxidant protein which reduces reactive free iron, and 5) antioxidant potential of the cerebrospinal fluid...
May 15, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29775744/the-shape-of-lives-to-come
#6
Ian Ground
No abstract text is available yet for this article.
May 15, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29763722/lifestyle-determinants-of-healthy-ageing-in-a-mediterranean-population-the-multinational-medis-study
#7
Alexandra Foscolou, Emmanuella Magriplis, Stefanos Tyrovolas, George Soulis, Vassiliki Bountziouka, Anargiros Mariolis, Suzanne Piscopo, Giuseppe Valacchi, Foteini Anastasiou, Efthimios Gotsis, George Metallinos, Dimitra Tyrovola, Anna Polystipioti, Evangelos Polychronopoulos, Antonia-Leda Matalas, Christos Lionis, Akis Zeimbekis, Josep-Antoni Tur, Labros S Sidossis, Demosthenes Panagiotakos
BACKGROUND: To evaluate modifiable, lifestyle risk factors of cardiovascular disease (CVD) among older adults, across ageing, in the Mediterranean area. METHODS: During 2005-2017, 3131 individuals from 26 Mediterranean islands of 5 countries, ≥65 years of age, were voluntarily enrolled. Anthropometrical, clinical and socio-demographic characteristics, dietary habits, lifestyle parameters were measured through standard procedures. Analyses were performed by year and across consecutive age groups of the participants...
May 12, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29758349/habitual-aerobic-exercise-gene-apoa5-named-rs662799-snp-and-response-of-blood-lipid-and-lipoprotein-phenotypes-among-older-chinese-adult
#8
Xiangyun Liu, Guoyuan Huang, Zhanbin Niu, Yuqin Wei, Ru Wang
BACKGROUND: The genetic component of dyslipidemia has been studied in adults but little in older population. It is remains unknown regarding influence and interaction of APOA5 gene single nucleotide polymorphism (SNP) and habitual aerobic exercise (HAE) on changes of blood lipids and lipoprotein phenotypes in older Chinese adults. METHODS: Four-hundred-twenty-three old Chinese individuals with HAE were divided into hyperlipidemia and normal groups. We genotyped polymorphic loci using matrix assisted laser desorption ionization time of flight mass spectrometry detection technology (MALDI-TOF)...
May 11, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29752998/effect-of-protein-intake-beyond-habitual-intakes-following-resistance-training-on-cardiometabolic-risk-disease-parameters-in-pre-conditioned-older-women
#9
Rodrigo R Fernandes, Hellen C G Nabuco, Paulo Sugihara Junior, Edilaine F Cavalcanti, Crisieli M Tomeleri, Alex S Ribeiro, Décio S Barbosa, Danielle Venturini, Brad J Schoenfeld, Edilson S Cyrino
OBJECTIVE: The aim of this study was to analyze the effects of higher protein (HP) intake associated with resistance training (RT) on parameters of cardiometabolic risk disease (CMR). METHODS: A randomized, double-blind and placebo-controlled design was conducted. Thirty-two pre-conditioned older women were randomized in two groups to receive 35 g of protein (high protein group - HP) or 35 g of placebo (low protein group - LP) after training sessions. The RT program was carried out over 12 weeks, 3 days per week and 3 sets of 8-12 repetitions...
May 9, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29751092/overdosing-of-benzodiazepines-z-drugs-and-falls-in-older-adults-costs-for-the-health-system
#10
María José Díaz-Gutiérrez, Mónica Martínez Cengotitabengoa, Cristina Bermúdez-Ampudia, Sainza García, Purificación López, Mayte Martínez-Cengotitabengoa, Ana González-Pinto
INTRODUCTION: Benzodiazepines and Z drugs (BZD/Z drugs) are commonly used for the treatment of insomnia and anxiety in older adults for long periods of time. Given the physiological and metabolic characteristics of this group of patients, they are more prone to the adverse effects of these drugs which include falls. The recommendations for use of BZD/Z drugs include the need to adjust the dose and select those with a short half-life, to avoid adverse events, which as well as potentially affecting patient outcome, increase healthcare costs...
May 8, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29751091/sestrins-are-differentially-expressed-with-age-in-the-skeletal-muscle-of-men-a-cross-sectional-analysis
#11
Nina Zeng, Randall F D'Souza, Cameron J Mitchell, David Cameron-Smith
A gradual loss of skeletal muscle mass is a common feature of aging, leading to impaired insulin sensitivity and mobility. Sestrin1, 2, 3 are multifunctional proteins that regulate the mammalian target of rapamycin complex (mTORC1), autophagy and redox homeostasis. It is unclear how aging affects Sestrins and their downstream targets in human, therefore this study examined the basal expression of Sestrins in three age groups, young, middle-aged and older men and explored the mTORC1 pathway, autophagy markers and antioxidant regulation...
May 8, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29751090/sex-dependent-and-sex-independent-muscle-activation-patterns-in-adult-gait-as-a-function-of-age
#12
Christopher A Bailey, Federica Corona, Giuseppina Pilloni, Micaela Porta, Maria Chiara Fastame, Paul Kenneth Hitchcott, Maria Pietronilla Penna, Massimiliano Pau, Julie N Côté
INTRODUCTION: Aging leads to poorer neuromuscular control that may impact mobility. However, the specific decades when these changes occur, and whether these time-based changes are sex-specific, are unclear. METHODS: Adults aged 20-82 years (N = 93, 51 females) walked six gait trials at their preferred speed over a 10-m platform. Electromyography (EMG) of the rectus femoris (RF), tibialis anterior (TA), and gastrocnemius lateralis (GL) were measured using wireless surface sensors...
May 8, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29747013/relationship-between-high-sodium-and-low-pufa-intake-and-carotid-atherosclerosis-in-elderly-women
#13
Elisa Mazza, Yvelise Ferro, Theodora Lamprinoudi, Carmine Gazzaruso, Patrizia Doldo, Arturo Pujia, Tiziana Montalcini
Several biologically active molecules including nutrients can affect the vascular endothelium which becomes dysfunctional and, as a consequence, predisposes to atherosclerosis. However, the impact of the intake of sodium and polyunsaturated fatty acids on carotid atherosclerosis in a population of elderly women has scarcely been studied. Our aim was to investigate the association between carotid intima-media thickness and atherosclerotic plaque and nutrient intake in asymptomatic elderly women. Carotid atherosclerosis was determined by duplex ultrasound in 108 elderly women...
May 7, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29738791/altered-gene-expression-pattern-indicates-the-differential-regulation-of-the-immune-response-system-as-an-important-factor-in-cardiac-aging
#14
Babett Bartling, Katja Niemann, Rainer U Pliquett, Hendrik Treede, Andreas Simm
Numerous changes occur in the old myocardium which finally cause lower cardiac output and, therefore, circulatory dysfunction. In order to identify an age-related gene expression pattern, we analyzed left ventricular myocardium of adult (6 months) and old (24 months) mice by use of whole genome expression arrays. About 2.3% of genes expressed above the median value of all genes were differentially expressed in old hearts. Nearly all of them were upregulated. After application of defined exclusion criteria, 98 genes were selected for a more detailed analysis...
May 5, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29738790/neuromuscular-electrical-stimulation-can-improve-mobility-in-older-adults-but-the-time-course-varies-across-tasks-double-blind-randomized-trial
#15
Diba Mani, Awad M Almuklass, Ioannis G Amiridis, Roger M Enoka
Declines in mobility with advancing age are often associated with a reduction in the use of lower leg muscles. We examined the influence of two interventions that involved neuromuscular electrical stimulation (NMES) applied to the triceps surae muscles on the mobility and muscle function of older adults. Thirty healthy older adults (73.5 ± 4.8 yrs) participated in a 6-week intervention comprising 3 weekly sessions of either narrow- or wide-pulse NMES. Motor function was assessed at Weeks 0, 4, 7, and 10...
May 5, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29730333/effect-of-metabolic-syndrome-and-aging-on-ca-2-dysfunction-in-coronary-smooth-muscle-and-coronary-artery-disease-severity-in-ossabaw-miniature-swine
#16
Jill K Badin, Rebecca S Bruning, Michael Sturek
BACKGROUND: Metabolic syndrome (MetS) and aging are prevalent risk factors for coronary artery disease (CAD) and contribute to the etiology of CAD, including dysregulation of Ca2+ handling mechanisms in coronary smooth muscle (CSM). The current study tested the hypothesis that CAD severity and CSM Ca2+ dysregulation were different in MetS-compared to aging-induced CAD. METHODS: Young (2.5 ± 0.2 years) and old (8.8 ± 1.2 years) Ossabaw miniature swine were fed an atherogenic diet for 11 months to induce MetS and were compared to lean age-matched controls...
May 3, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29730332/the-relationship-between-selected-body-fatness-indices-and-the-level-of-blood-interleukin-6-in-female-nursing-home-residents-aged-80-years-without-inflammation-a-pilot-study
#17
Ryszard Zarzeczny, Agnieszka Nawrat-Szołtysik, Anna Polak, Ahmed Manasar, Jakub Maliszewski, Adam Kiełtyka, Beata Matyja, Magdalena Dudek, Joanna Zborowska, Adam Wajdman
BACKGROUND: Interleukin-6 (IL-6) production facilitates a shift from acute to chronic inflammation that may induce the development of some diseases and aging. Several studies have suggested that adiposity is closely related to serum IL-6 level, but their authors examined relatively young older adults (aged 60-80 years), so it is not clear whether this association would also occur in people at a more advanced age. OBJECTIVE: to assess whether in elderly women without inflammation the widely used anthropometric obesity indices are associated with serum IL-6 level and, if so, to determine the best anthropometric predictor of this inflammatory biomarker...
May 3, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29730331/higher-muscle-power-training-volume-is-not-determinant-for-the-magnitude-of-neuromuscular-improvements-in-elderly-women
#18
Régis Radaelli, Clarissa M Brusco, Pedro Lopez, Anderson Rech, Carlos L Machado, Rafael Grazioli, Diana C Muller, Eduardo L Cadore, Ronei S Pinto
The aim of this study was to compare the effects of 12 weeks of muscle power training using one- and three-sets on neuromuscular adaptations in elderly women. Twenty six healthy elderly women were randomly assigned into two groups: one-set (n = 13) and three-sets (n = 13). Maximal dynamic and isometric strength, rapid force assessed as absolute and normalized rate of force development (RTD) and contractile impulse during unilateral leg knee extension at 0-50 and 0-200 ms, overall quadriceps muscle thickness, muscle power during a countermovement jump (CMJ), and functional performance using time-up-and-go and the timed stair climb tests were evaluated before and after training...
May 3, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29730330/water-based-aerobic-training-improves-strength-parameters-and-cardiorespiratory-outcomes-in-elderly-women
#19
Rochelle Rocha Costa, Ana Carolina Kanitz, Thais Reichert, Alexandre Konig Garcia Prado, Leandro Coconcelli, Adriana Cristine Koch Buttelli, Laura Frances Pereira, Marcos Paulo Bienert Masiero, Andressa Pellegrini Meinerz, Matheus Oliveira Conceição, Isadora Loch Sbeghen, Luiz Fernando Martins Kruel
The aim of the present study was to compare the effects of water-based aerobic training and water-based resistance training on muscular strength and cardiorespiratory fitness in older women. Sixty-nine individuals were randomized into the following three groups: the water-based aerobic training (WA, n = 23) group, the water-based resistance training (WR, n = 23) group, and the control group (CG, n = 23). Participants were trained two times per week for 10 weeks. The trainings presented a linear periodization with an increase in the volume-intensity relation...
May 3, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29730329/the-relationship-between-different-settings-of-medical-service-and-incident-frailty
#20
Francesco Bolzetta, Terrie Wetle, Richard Besdine, Marianna Noale, Alberto Cester, Gaetano Crepaldi, Stefania Maggi, Nicola Veronese
BACKGROUND: Some studies have reported a potential association between usual source of health care and disability, but no one has explored the association with frailty, a state of early and potential reversible disability. We therefore aimed to explore the association between older persons' self-reported usual source of health care at baseline and the onset of frailty. METHODS: Information regarding usual source of health care was captured through self-report and categorized as 1) private doctor's office, 2) public clinic, 3) Health Maintenance Organization (HMO), or 4) hospital clinic/emergency department (ED)...
May 3, 2018: Experimental Gerontology
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