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Biomarkers of frailty

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https://www.readbyqxmd.com/read/29032243/dna-methylation-patterns-are-related-to-co-morbidity-status-and-circulating-c-reactive-protein-levels-in-the-nursing-home-elderly
#1
Chris P Verschoor, Lisa M McEwen, Michael S Kobor, Mark B Loeb, Dawn M E Bowdish
Elderly residents of long-term care commonly exhibit a number of age-related health deficits, including impaired physical and cognitive function, chronic illnesses, and chronic inflammation. Given our previous data relating the phenotype and function of innate and adaptive leukocytes from the nursing home elderly to chronic conditions and inflammatory biomarkers, we hypothesized that these factors would influence the regulatory programming of immune cells, thereby contributing to immune dysfunction. Since DNA methylation represents both an important regulatory mechanism of cells as well as a biomarker of health and disease, we sought to characterize the methylome of peripheral blood mononuclear cells (PBMCs) from the nursing home elderly (n=23; 82-98years old, 70% female), and compare these patterns to pathological factors such as dementia, co-morbidity score and frailty, and immune-related factors such as serum C-reactive protein (CRP) and cytokine levels and varicella-zoster virus (VZV) vaccine responsiveness...
October 12, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28977399/allogeneic-mesenchymal-stem-cells-ameliorate-aging-frailty-a-phase-ii-randomized-double-blind-placebo-controlled-clinical-trial
#2
Bryon A Tompkins, Darcy L DiFede, Aisha Khan, Ana Marie Landin, Ivonne Hernandez Schulman, Marietsy V Pujol, Alan W Heldman, Roberto Miki, Pascal J Goldschmidt-Clermont, Bradley J Goldstein, Muzammil Mushtaq, Silvina Levis-Dusseau, John J Byrnes, Maureen Lowery, Makoto Natsumeda, Cindy Delgado, Russell Saltzman, Mayra Vidro-Casiano, Moisaniel Da Fonseca, Samuel Golpanian, Courtney Premer, Audrey Medina, Krystalenia Valasaki, Victoria Florea, Erica Anderson, Jill El-Khorazaty, Adam Mendizabal, Geoff Green, Anthony A Oliva, Joshua M Hare
Background: Aging frailty, characterized by decreased physical and immunological functioning, is associated with stem cell depletion. Human allogeneic mesenchymal stem cells (allo-hMSCs) exert immunomodulatory effects and promote tissue repair. Methods: This is a randomized, double-blinded, dose-finding study of intravenous allo-hMSCs (100 or 200-million [M]) vs placebo delivered to patients (n = 30, mean age 75.5 ± 7.3) with frailty. The primary endpoint was incidence of treatment-emergent serious adverse events (TE-SAEs) at 1-month postinfusion...
July 17, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28977375/cross-sectional-and-longitudinal-relationships-between-inflammatory-biomarkers-and-frailty-in-community-dwelling-older-men-the-concord-health-and-ageing-in-men-project
#3
Benjumin Hsu, Vasant Hirani, Robert G Cumming, Vasi Naganathan, Fiona M Blyth, Fredrick C Wright, Louise M Waite, Markus J Seibel, David J Handelsman, David G Le Couteur
Background: Previous studies demonstrated associations between IL-6 and frailty, but associations between a wide range of cytokines, chemokines, and growth factors with prevalent and incident frailty has not been studied. Methods: Community-dwelling men aged more than 75 enrolled in the 5-year and 8-year follow-up of the CHAMP study were assessed. Twenty-seven inflammatory biomarkers were measured using the Bio-Plex Pro Human Cytokine 27-plex Assay kit at 5-year follow-up...
July 28, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28977345/men-sustain-higher-dysregulation-levels-than-women-without-becoming-frail
#4
Alan A Cohen, Véronique Legault, Qing Li, Linda P Fried, Luigi Ferrucci
The aging process differs in important ways between the sexes, with women living longer but at higher risk for frailty (the male-female health-survival paradox). The underlying biological mechanisms remain poorly understood, but may relate to sex differences in physiological dysregulation patterns. Here, using biomarkers from two longitudinal cohort studies (InCHIANTI and BLSA) and one cross-sectional survey (NHANES), we assess sex differences in trajectories of dysregulation globally and for five physiological systems: oxygen transport, electrolytes, hematopoiesis, lipids, and liver/kidney function...
July 23, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28944598/dentition-status-and-frailty-in-community-dwelling-older-adults-a-5-year-prospective-cohort-study
#5
Masanori Iwasaki, Akihiro Yoshihara, Misuzu Sato, Kumiko Minagawa, Mieko Shimada, Mamoru Nishimuta, Toshihiro Ansai, Yutaka Yoshitake, Hideo Miyazaki
AIM: To examine the longitudinal association between dentition status and incidence of frailty in older adults. METHODS: The present prospective cohort study included community-dwelling Japanese adults aged 75 years at baseline (n = 322). Dental examinations, biochemical blood examinations, physical performance and anthropometric measurements, and structured questionnaires were carried out at baseline. The presence of ≥20 teeth with nine or more occluding pairs of teeth was defined as functional dentition...
September 24, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28923171/potential-early-biomarkers-of-sarcopenia-among-independent-older-adults
#6
Ana Coto Montes, José Antonio Boga, Carlos Bermejo Millo, Adrián Rubio González, Yaiza Potes Ochoa, Ignacio Vega Naredo, Marta Martínez Reig, Luis Romero Rizos, Pedro Manuel Sánchez Jurado, Juan Jose Solano, Pedro Abizanda, Beatriz Caballero
OBJECTIVES: There are no tools or biomarkers for a quantitative analysis of sarcopenia. STUDY DESIGN: Cross-sectional study of the diagnosis of sarcopenia in 200 independent adults aged 70 years or over. MAIN OUTCOME MEASURES: Sarcopenia was defined as loss of muscle mass together with low strength and/or loss of physical performance. We considered different clinical parameters and assayed potential blood biomarkers (cell energetic metabolism, muscle performance, inflammation, infection and oxidative stress)...
October 2017: Maturitas
https://www.readbyqxmd.com/read/28884787/ultrasonic-echo-intensity-as-a-new-noninvasive-in-vivo-biomarker-of-frailty
#7
Rebeca Mirón Mombiela, Fernando Facal de Castro, Pilar Moreno, Consuelo Borras
OBJECTIVES: To investigate whether muscle quality based on echo intensity (EI) is associated with muscle strength (MS) and correlates with risk of frailty in elderly outpatients. DESIGN: Cross-sectional, experimental study. SETTING: Outpatient clinic. PARTICIPANTS: Individuals aged 20 to 90 (N = 112). Individuals aged 20 to 59 participated as controls. Those aged 60 and older participated in the experimental group and were subdivided into robust, prefrail, and frail according to the Fried frailty criteria...
September 7, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28860729/aging-and-extrapulmonary-effects-of-chronic-obstructive-pulmonary-disease
#8
Emanuela Tudorache, Ariadna Petronela Fildan, Mirela Frandes, Elena Dantes, Doina Ecaterina Tofolean
INTRODUCTION: People with COPD have a decline in functional status, but little is known about the rate of decline and factors that contribute. Of particular concern is the decline in cognitive and functional performance. Decrease in cognitive and functional performance will finally lead to decreased health status, sedentary life style and premature frailty. AIM: The aim of this study is to compare functional performance and cognitive status in patients with COPD of different ages and to examine the changes in extrapulmonary effects...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28801236/frailty-status-in-older-adults-is-related-to-alterations-in-indoleamine-2-3-dioxygenase-1-and-guanosine-triphosphate-cyclohydrolase-i%C3%A2-enzymatic-pathways
#9
Diego Marcos-Pérez, María Sánchez-Flores, Ana Maseda, Laura Lorenzo-López, José C Millán-Calenti, Barbara Strasser, Johanna M Gostner, Dietmar Fuchs, Eduardo Pásaro, Vanessa Valdiglesias, Blanca Laffon
BACKGROUND: Frailty is a multidimensional syndrome correlated to the loss of homeostasis and increased vulnerability to stressors, which is associated with increase in the risk of disability, comorbidity, hospitalization, and death in the elderly. It is based on the interplay of physiological, psychological, social, and environmental factors. OBJECTIVES: Because aging involves a detrimental immune response, this work aimed to assess the possible role of chronic low-grade immune stimulation on frailty status in the elderly...
August 8, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28776468/falls-the-adverse-drug-reaction-of-the-elderly-and-the-impact-of-pharmacogenetics
#10
Katja Susanne Just, Katharina Luise Schneider, Marlen Schurig, Julia Carolin Stingl, Jürgen Brockmöller
Falls is a frequent type of adverse drug reactions causing significant morbidity and mortality in the elderly. We reviewed, with which drugs the risk of falls is relevant and might depend on genomic variation. Pharmacogenetic variability may contribute to drug-induced falls for instance mediated by impaired drug elimination due to inherited deficiency in enzymes like CYP2C9, CYP2C19 and CYP2D6. The relative role of specific genes and polymorphisms in old age may differ from younger people. Biomarkers for frailty, but also genomic biomarkers might help identifying patients at high risk for drug-induced falls...
August 2017: Pharmacogenomics
https://www.readbyqxmd.com/read/28754302/immunometabolic-and-lipidomic-markers-associated-with-the-frailty-index-and-quality-of-life-in-aging-hiv-men-on-antiretroviral-therapy
#11
Hui-Ling Yeoh, Allen C Cheng, Catherine L Cherry, Jacquelyn M Weir, Peter J Meikle, Jennifer F Hoy, Suzanne M Crowe, Clovis S Palmer
Chronic immune activation persists despite antiretroviral therapy (ART) in HIV+ individuals and underpins an increased risk of age-related co-morbidities. We assessed the Frailty Index in older HIV+ Australian men on ART. Immunometabolic markers on monocytes and T cells were analyzed using flow cytometry, plasma innate immune activation markers by ELISA, and lipidomic profiling by mass spectrometry. The study population consisted of 80 HIV+ men with a median age of 59 (IQR, 56-65), and most had an undetectable viral load (92%)...
August 2017: EBioMedicine
https://www.readbyqxmd.com/read/28723411/the-risks-of-biomarker-based-epidemiology-associations-of-circulating-calcium-levels-with-age-mortality-and-frailty-vary-substantially-across-populations
#12
REVIEW
Alan A Cohen, Véronique Legault, Georg Fuellen, Tamàs Fülöp, Linda P Fried, Luigi Ferrucci
Recent studies have shown contradictory associations between calcium levels and health outcomes. We suspected these conflicting results were the consequence of more general issues with how biomarkers are analyzed in epidemiological studies, particularly in the context of aging. To demonstrate the risks of typical analyses, we used three longitudinal aging cohort studies and their demographic subsets to analyze how calcium levels change with age and predict risk of mortality and frailty. We show that calcium levels either increase or decrease with age depending on the population, and positively or negatively predict frailty depending on the population and analysis; both age and frailty results showed substantial heterogeneity...
July 16, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28676292/intestinal-permeability-biomarker-zonulin-is-elevated-in-healthy-aging
#13
YanFei Qi, Ruby Goel, Seungbum Kim, Elaine M Richards, Christy S Carter, Carl J Pepine, Mohan K Raizada, Thomas W Buford
INTRODUCTION: Increased gut permeability ("leaky gut") has been proposed as a potential contributor to age-related inflammation and gut dysbiosis. However, information on the relationship between a leaky gut and inflammation and physical frailty during aging are limited. OBJECTIVE: To investigate the hypothesis that an aging-associated leaky gut is linked to the age-related inflammation and frailty. METHODS: Two cohorts of healthy adults were studied: young (18-30 years old, n = 19) and older (≥70 years old, n = 18)...
September 1, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28665517/a-cumulative-deficit-laboratory-test-based-frailty-index-personal-and-neighborhood-associations
#14
Katherine E King, Gerda G Fillenbaum, Harvey J Cohen
OBJECTIVES: To explore the association between a newly developed cumulative laboratory-based frailty index (FI) and intrinsic (personal) and extrinsic (social, environmental) characteristics. DESIGN: Cross-sectional longitudinal study. SETTING: The third and fourth waves of the community-representative, five-county, 10-year Duke Established Populations for Epidemiologic Studies of the Elderly study, carried out in a health service-rich area...
September 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28663354/feeding-the-microbiota-transducer-of-nutrient-signals-for-the-host
#15
REVIEW
Fergus Shanahan, Douwe van Sinderen, Paul W O'Toole, Catherine Stanton
Advances in microbiome science cast light on traditional concepts on nutritional science, and are poised for clinical translation. Epidemiologic observations which linked lifestyle factors to risk of disease are being re-interpreted with mechanistic insight based on improved understanding of the microbiota. Examples include the role of dietary fibre in disease prevention, the deleterious effects of highly restricted diets, and the contribution of the microbiota to over- and undernutrition. While the microbiota transduces nutrient signals for the host, food and habitual diet shape the composition of the gut microbiota at every stage of life...
September 2017: Gut
https://www.readbyqxmd.com/read/28658942/cellular-senescence-biomarker-p16ink4a-cell-burden-in-thigh-adipose-is-associated-with-poor-physical-function-in-older-women
#16
Jamie N Justice, Heather Gregory, Tamar Tchkonia, Nathan K LeBrasseur, James L Kirkland, Stephen B Kritchevsky, Barbara J Nicklas
Background: Ample evidence implicates cellular senescence as a contributor to frailty and functional decline in rodents, but considerable effort remains to translate these findings to human aging. Methods: We quantified senescence biomarker p16INK4a-expressing cells in thigh adipose tissue obtained from older women previously enrolled in a 5-month resistance training intervention, with or without caloric restriction (RT±CR, n=11 baseline, 8 pre-post-intervention pairs)...
June 27, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28544527/biomarkers-associated-with-mortality-in-patients-undergoing-dialysis
#17
Ana Rebollo Rubio, Jose Miguel Morales Asencio, Mª Eugenia Pons Raventos
BACKGROUND: Survival for patients commencing renal replacement therapy is around 90% in the first year and 83% at two years after starting dialysis. The factors that appear to predict mortality are comorbidity and frailty associated with kidney disease, glomerular filtration rate, age and biochemical factors. OBJECTIVES: To analyse the condition of patients starting renal replacement therapy, based on biomarkers commonly used in clinical practice and their association with mortality, measured 6 and 12 months after initiating replacement therapy...
September 2017: Journal of Renal Care
https://www.readbyqxmd.com/read/28542531/new-diagnostic-index-for-sarcopenia-in-patients-with-cardiovascular-diseases
#18
Haruhito Harada, Hisashi Kai, Rei Shibata, Hiroshi Niiyama, Yasuhiro Nishiyama, Toyoaki Murohara, Noriko Yoshida, Atsushi Katoh, Hisao Ikeda
BACKGROUND: Sarcopenia is an aging and disease-related syndrome characterized by progressive and generalized loss of skeletal muscle mass and strength, with the risk of frailty and poor quality of life. Sarcopenia is diagnosed by a decrease in skeletal muscle index (SMI) and reduction of either handgrip strength or gait speed. However, measurement of SMI is difficult for general physicians because it requires special equipment for bioelectrical impedance assay or dual-energy X-ray absorptiometry...
2017: PloS One
https://www.readbyqxmd.com/read/28496545/c-reactive-protein-and-frailty-in-the-elderly-a-literature-review
#19
REVIEW
Dimitrios Velissaris, Nikolaos Pantzaris, Ioanna Koniari, Nikolaos Koutsogiannis, Vasilios Karamouzos, Ioanna Kotroni, Anastasia Skroumpelou, John Ellul
Chronic inflammation is a well-established background process in many age-related diseases. Many recent studies investigate the use of various inflammatory biomarkers such as C-reactive protein (CRP), interleukin-6, and interleukin-1 as predictors of physical and cognitive performance among elders. The phenotype of frailty has also been associated with underlying inflammatory mechanisms. The aim of this article was to review the literature referring to the correlation of CRP serum levels and frailty in older individuals...
June 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28488297/frailty-in-older-adults-with-amnestic-mild-cognitive-impairment-as-a-result-of-alzheimer-s-disease-a-comparison-of-two-models-of-frailty-characterization
#20
Natália O C Cezar, Rafael Izbicki, Diego Cardoso, Jouce G Almeida, Leandro Valiengo, Marina V Z Camargo, Orestes V Forlenza, Monica S Yassuda, Ivan Aprahamian
AIM: To verify the prevalence and presence of frailty markers, and their relationship to cognitive function among older adults with amnestic mild cognitive impairment (aMCI). METHODS: This was an observational study with transversal analyses. Older adults with aMCI as a result of Alzheimer's disease (n = 40) were compared with healthy controls (n = 26) at the Psychogeriatric Outpatient Unit, Institute and Department of Psychiatry, Faculty of Medicine of the University of São Paulo...
May 10, 2017: Geriatrics & Gerontology International
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