Age-Related Adverse Inflammatory and Metabolic Changes Begin Early in Adulthood.

Abstract

Aging is characterized by deleterious immune and metabolic changes, but the onset of these changes is unknown. We measured immune and metabolic biomarkers in adults beginning at age 30. To our knowledge, this is the first study to evaluate these biomarkers in adults aged 30 to over 80. Biomarkers were quantified in 961 adults. Tumor necrosis factor alpha (TNF-α), tumor necrosis factor receptor I (TNFR-I), tumor necrosis factor receptor II (TNFR-II), interleukin (IL)-2, IL-6, VCAM-I, D-Dimer, G-CSF, regulated on activation, normal T cell expressed and secreted (RANTES), matrix metalloproteinase-3 (MMP-3), adiponectin, and paraoxonase activity were measured by ELISA. Acylcarnitines and amino acids (AAs) were measured by mass spectrometry and reduced to a single factor using principal components analysis (PCA). Glycine was analyzed separately. The relationship between age and biomarkers was analyzed by linear regression with sex, race, and body mass index (BMI) as covariates. Age was positively correlated with TNF-α, TNFR-I, TNFR-II, IL-6, IL-2, VCAM-1, D-Dimer, MMP-3, adiponectin, acylcarnitines, and AAs. Age was negative correlated with G-CSF, RANTES, and paraoxonase activity. BMI was significant for all biomarkers except IL-2, VCAM-1, RANTES, paraoxonase activity, and the AA factor. Excluding MMP-3, greater BMI was associated with potentially adverse changes in biomarker concentrations. Age-related changes in immune and metabolic biomarkers, known to be associated with poor outcomes in older adults, begin as early as the thirties.

Department

Description

Provenance

Citation

Published Version (Please cite this version)

10.1093/gerona/gly121

Scholars@Duke

Parker

Daniel Christopher Parker

Assistant Professor of Medicine

My clinical and research interests center on the development and use of disease-modifying treatments for Alzheimer's disease and related dementias (ADRD). I am a regional leader in the use of amyloid targeted therapies (ATT), including lecanemab and donanemab, for the treatment of early Alzheimer's disease. I serve as director of the Duke Memory Disorders Clinic.

Pieper

Carl F. Pieper

Professor of Biostatistics & Bioinformatics

Analytic Interests.

1) Issues in the Design of Medical Experiments: I explore the use of reliability/generalizability models in experimental design. In addition to incorporation of reliability, I study powering longitudinal trials with multiple outcomes and substantial missing data using Mixed models.

2) Issues in the Analysis of Repeated Measures Designs & Longitudinal Data: Use of Hierarchical Linear Models (HLM) or Mixed Models in modeling trajectories of multiple variables over time (e.g., physical and cognitive functioning and Blood Pressure). My current work involves methodologies in simultaneous estimation of trajectories for multiple variables within and between domains, modeling co-occuring change.

Areas of Substantive interest: (1) Experimental design and analysis in gerontology and geriatrics, and psychiatry,
(2) Multivariate repeated measures designs,

Ilkayeva

Olga Ilkayeva

Assistant Professor in Medicine

Olga Ilkayeva, Ph.D., is the Director of the Metabolomics Core Laboratory at Duke Molecular Physiology Institute. She received her Ph.D. training in Cell Regulation from UT Southwestern Medical Center at Dallas, TX. Her postdoctoral research in the laboratory of Dr. Chris Newgard at Duke University Medical Center focused on lipid metabolism and regulation of insulin secretion. As a research scientist at the Stedman Nutrition and Metabolism Center, Dr. Ilkayeva expanded her studies to include the development of targeted mass spectrometry analyses. Currently, she works on developing and validating quantitative mass spectrometry methods used for metabolic profiling of various biological models with emphasis on diabetes, obesity, cardiovascular disease, and the role of gut microbiome in both health and disease.

Bain

James R. Bain

Professor in Medicine
Newby

Laura Kristin Newby

Professor of Medicine

Research Description

General Focus: Clinical investigation the process and treatment of acute and chronic coronary artery disease and systems issues for delivery of care to patients with these illnesses. Particular interests include management of patients with chest pain and unstable angina, evaluation of the use of biochemical markers other than CK-MB for diagnosis and risk stratification in these patients, issues related to coronary artery disease in women, and systems issues regarding optimizing the process of delivery of care to patients with acute and chronic coronary artery disease. Finally, I have a strong interest in defining the genetic contribution to development of coronary artery disease.


Key words: coronary artery disease acute myocardial infarction unstable angina chest pain women biochemical markers risk stratification genetics

Morey

Miriam C. Morey

Professor Emeritus of Medicine

The general focus of Dr. Morey's work is exercise and aging. All of her research examines how physical activity, exercise training, or physical fitness influence the physical functioning and/or pyschosocial quality of life of older adults. She directs a supervised hospital-based program for older adults, which is used to examine longitudinally the effects of exercise training on the musculoskeletal, articular, and cardiorespiratory systems. Furthermore, she has a number of studies that examine how system-wide impairments serve as preclinical indicators of disability and overall decline in the quality of life of older adults. Ongoing studies examine the role of exercise training in attenuation or reversal of functional decline and examination of the effectivenes of different methods of physical activity counseling for home-based exercise.
Dr. Morey's research evolves directly from three sources: (1) primary analyses of clinical trials regarding the impact of exercise on a specific outcome, (2) longitudinal analyses of participants in ongoing clinical exercise programs, and (3) secondary analyses of clinical trials which involve exercise or physical activity.
Although physical activity and exercise are the interventions of interest in all of these studies, the outcomes of interest vary considerably. Within the broad domain of aging, Dr. Morey has examined the impact of exercise on physical performance, well-being, sleep quality, disability, and functional limitations. More recently, Dr. Morey has several studies focusing on the effect of tailored telephone physical activity counseling to improve function in elders. Specific studies are targeted to newly diagnosed cancer survivors, long-term cancer survivors, and frail elders in geriatric and primary care settings.
Dr. Morey's expertise is in the area of exercise physiology and aging. She has specific knowledge in age-related changes in cardiorespiratory functioning, the effects of habitual exercise (longitudinal) on performance, and exercise programming for older adults.


Key Words: Exercise, maximal oxygen uptake, cardiorespiratory fitness, aging, disability,
functional limitations, longitudinal


Material is made available in this collection at the direction of authors according to their understanding of their rights in that material. You may download and use these materials in any manner not prohibited by copyright or other applicable law.