1
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Lamming DW. Quantification of healthspan in aging mice: introducing FAMY and GRAIL. GeroScience 2024; 46:4203-4215. [PMID: 38755467 PMCID: PMC11336093 DOI: 10.1007/s11357-024-01200-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Accepted: 05/08/2024] [Indexed: 05/18/2024] Open
Abstract
The population around the world is graying, and as many of these individuals will spend years suffering from the burdens of age associated diseases, understanding how to increase healthspan, defined as the period of life free from disease and disability, is an urgent priority of geroscience research. The lack of agreed-upon quantitative metrics for measuring healthspan in aging mice has slowed progress in identifying interventions that do not simply increase lifespan, but also healthspan. Here, we define FAMY (Frailty-Adjusted Mouse Years) and GRAIL (Gauging Robust Aging when Increasing Lifespan) as new summary statistics for quantifying healthspan in mice. FAMY integrates lifespan data with longitudinal measurements of a widely utilized clinical frailty index, while GRAIL incorporates these measures and also adds information from widely utilized healthspan assays and the hallmarks of aging. Both metrics are conceptually similar to quality-adjusted life years (QALY), a widely utilized measure of disease burden in humans, and can be readily calculated from data acquired during longitudinal and cross-sectional studies of mouse aging. We find that interventions generally thought to promote health, including calorie restriction, robustly improve healthspan as measured by FAMY and GRAIL. Finally, we show that the use of GRAIL provides new insights, and identify dietary restriction of protein or isoleucine as interventions that robustly promote healthspan but not longevity in female HET3 mice. We suggest that the routine integration of these measures into studies of aging in mice will allow the identification and development of interventions that promote healthy aging even in the absence of increased lifespan.
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Affiliation(s)
- Dudley W Lamming
- Department of Medicine, University of Wisconsin-Madison, 1685 Highland Ave, MFCB Rm 4147, Madison, WI, 53705, USA.
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2
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Luciano A, Robinson L, Garland G, Lyons B, Korstanje R, Di Francesco A, Churchill GA. Longitudinal fragility phenotyping contributes to the prediction of lifespan and age-associated morbidity in C57BL/6 and Diversity Outbred mice. GeroScience 2024; 46:4937-4954. [PMID: 38935230 DOI: 10.1007/s11357-024-01226-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 05/24/2024] [Indexed: 06/28/2024] Open
Abstract
Aging studies in mammalian models often depend on natural lifespan data as a primary outcome. Tools for lifespan prediction could accelerate these studies and reduce the need for veterinary intervention. Here, we leveraged large-scale longitudinal frailty and lifespan data on two genetically distinct mouse cohorts to evaluate noninvasive strategies to predict life expectancy in mice. We applied a modified frailty assessment, the Fragility Index, derived from existing frailty indices with additional deficits selected by veterinarians. We developed an ensemble machine learning classifier to predict imminent mortality (95% proportion of life lived [95PLL]). Our algorithm represented improvement over previous predictive criteria but fell short of the level of reliability that would be needed to make advanced prediction of lifespan and thus accelerate lifespan studies. Highly sensitive and specific frailty-based predictive endpoint criteria for aged mice remain elusive. While frailty-based prediction falls short as a surrogate for lifespan, it did demonstrate significant predictive power and as such must contain information that could be used to inform the conclusion of aging experiments. We propose a frailty-based measure of healthspan as an alternative target for aging research and demonstrate that lifespan and healthspan criteria reveal distinct aspects of aging in mice.
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3
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Weibel CJ, Dasari MR, Jansen DA, Gesquiere LR, Mututua RS, Warutere JK, Siodi LI, Alberts SC, Tung J, Archie EA. Using non-invasive behavioral and physiological data to measure biological age in wild baboons. GeroScience 2024; 46:4059-4074. [PMID: 38693466 PMCID: PMC11336142 DOI: 10.1007/s11357-024-01157-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 04/05/2024] [Indexed: 05/03/2024] Open
Abstract
Biological aging is near-ubiquitous in the animal kingdom, but its timing and pace vary between individuals and over lifespans. Prospective, individual-based studies of wild animals-especially non-human primates-help identify the social and environmental drivers of this variation by indicating the conditions and exposure windows that affect aging processes. However, measuring individual biological age in wild primates is challenging because several of the most promising methods require invasive sampling. Here, we leverage observational data on behavior and physiology, collected non-invasively from 319 wild female baboons across 2402 female-years of study, to develop a composite predictor of age: the non-invasive physiology and behavior (NPB) clock. We found that age predictions from the NPB clock explained 51% of the variation in females' known ages. Further, deviations from the clock's age predictions predicted female survival: females predicted to be older than their known ages had higher adult mortality. Finally, females who experienced harsh early-life conditions were predicted to be about 6 months older than those who grew up in more benign conditions. While the relationship between early adversity and NPB age is noisy, this estimate translates to a predicted 2-3 year reduction in mean adult lifespan in our model. A constraint of our clock is that it is tailored to data collection approaches implemented in our study population. However, many of the clock's components have analogs in other populations, suggesting that non-invasive data can provide broadly applicable insight into heterogeneity in biological age in natural populations.
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Affiliation(s)
- Chelsea J Weibel
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - Mauna R Dasari
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - David A Jansen
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | | | - Raphael S Mututua
- Amboseli Baboon Research Project, Amboseli National Park, Kajiado, Kenya
| | - J Kinyua Warutere
- Amboseli Baboon Research Project, Amboseli National Park, Kajiado, Kenya
| | - Long'ida I Siodi
- Amboseli Baboon Research Project, Amboseli National Park, Kajiado, Kenya
| | - Susan C Alberts
- Department of Biology, Duke University, Durham, NC, USA
- Department of Evolutionary Anthropology, Duke University, Durham, NC, USA
- Duke University Population Research Institute, Duke University, Durham, NC, USA
| | - Jenny Tung
- Department of Biology, Duke University, Durham, NC, USA
- Department of Evolutionary Anthropology, Duke University, Durham, NC, USA
- Duke University Population Research Institute, Duke University, Durham, NC, USA
- Department of Primate Behavior and Evolution, Max Planck Institute for Evolutionary Anthropology, 04103, Leipzig, Germany
- Canadian Institute for Advanced Research, Toronto, M5G 1M1, Canada
- Faculty of Life Sciences, Institute of Biology, Leipzig University, Leipzig, Germany
| | - Elizabeth A Archie
- Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA.
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4
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Zheng R, Huang S, Chen L, Liu L, Ge M, Yang Y, Tan Y, Chen X. Effectiveness of the frailty index in predicting recurrent pneumonia and death in long-term hospitalized patients with vascular cognitive impairment. Exp Gerontol 2024; 196:112576. [PMID: 39241990 DOI: 10.1016/j.exger.2024.112576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2024] [Revised: 08/31/2024] [Accepted: 09/03/2024] [Indexed: 09/09/2024]
Abstract
OBJECTIVE The aim was to predict the effectiveness of using frailty, defined by the frailty index (FI), for predicting recurrent pneumonia and death in patients over 50 years and older with vascular cognitive impairment (VCI) during long-term hospitalization. MEASUREMENTS This retrospective cohort study was conducted at a teaching hospital in western China and included VCI patients aged ≥50 years undergoing long-term hospitalization. The relevant data were collected from the electronic medical record system. The FI was based on 31 parameters and groups were defined using a cutoff value (0.2) as robust (FI < 0.2) and FRAIL (≥0.2). The definition of recurrent pneumonia was a minimum of two episodes within a year, with the symptoms, signs, and imaging results of pneumonia disappearing completely between episodes, and a minimum interval between episodes of seven days. Death was recorded by the hospital as the result of cardiac and respiratory arrest and survival was defined as the interval between hospital admission and confirmed death. Logistic regression models were used to assess the association between FI and recurrent pneumonia, while associations between FI and death were assessed by Cox proportional hazards models. RESULTS A total of 252 long-term hospitalized VCI patients ≥50 years old were enrolled, of whom 115 were male (45.6 %). Ninety-seven patients (38.5 %) were defined as FRAIL. The median length of stay for hospitalized patients was 37 months. Overall, 215 patients developed pneumonia during hospitalization, which occurred an average of 14.5 months after admission, while 151 (59.9 %) had recurrent pneumonia, and 155 (61.5 %) died. Of these, 143 died in the hospital and 12 died after discharge. No significant differences were seen in the incidence of recurrent pneumonia between FRAIL and robust long-term hospitalized VCI patients (FRAIL vs. robust: 66.0 % vs. 56.1 %, P = 0.121) while FRAIL patients had a higher mortality rate than robust patients (FRAIL vs. robust: 71.1 % vs. 55.5 %, P = 0.013). After further Cox regression analysis and adjustment for possible confounders found to be significant in the univariate analysis (including age, sex, smoking history, and activities of daily living (ADL) score), FRAIL patients had a higher risk of death than healthy patients (HR = 1.595, 95 % CI: 1.149-2.213). In addition, based on Model 2, confounding variables that were not statistically significant in the univariate analysis but may have had an impact on the results (including marital status, educational level, drinking history, comorbidity and rehabilitation treatment) were incorporated into Model 3 for further correction. The result remained unchanged, namely, that compared with robust patients, FRAIL patients had a higher risk of death (HR = 1.771, 95 % CI: 1.228-2.554). CONCLUSIONS AND IMPLICATIONS Frailty defined by the FI was effective for predicting the risk of mortality but not that of recurrent pneumonia in long-term hospitalized VCI patients aged 50 or older.
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Affiliation(s)
- Rong Zheng
- Zigong Affiliated Hospital of Southwest Medical University, Department of Geriatric, Zigong, Sichuan Province, China
| | - Sha Huang
- Zigong Affiliated Hospital of Southwest Medical University, Department of Geriatric, Zigong, Sichuan Province, China
| | - Lanlan Chen
- Zigong Affiliated Hospital of Southwest Medical University, Department of Geriatric, Zigong, Sichuan Province, China
| | - Libin Liu
- Zigong Affiliated Hospital of Southwest Medical University, Department of Geriatric, Zigong, Sichuan Province, China
| | - Meiling Ge
- National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Yanwu Yang
- The Emergency Department, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - Youguo Tan
- Zigong Affiliated Hospital of Southwest Medical University, Department of Geriatric, Zigong, Sichuan Province, China.
| | - Xiaoyan Chen
- Zigong Affiliated Hospital of Southwest Medical University, Department of Geriatric, Zigong, Sichuan Province, China.
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Bartolomucci A, Kane AE, Gaydosh L, Razzoli M, McCoy BM, Ehninger D, Chen BH, Howlett SE, Snyder-Mackler N. Animal Models Relevant for Geroscience: Current Trends and Future Perspectives in Biomarkers, and Measures of Biological Aging. J Gerontol A Biol Sci Med Sci 2024; 79:glae135. [PMID: 39126297 PMCID: PMC11316208 DOI: 10.1093/gerona/glae135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Indexed: 08/12/2024] Open
Abstract
For centuries, aging was considered inevitable and immutable. Geroscience provides the conceptual framework to shift this focus toward a new view that regards aging as an active biological process, and the biological age of an individual as a modifiable entity. Significant steps forward have been made toward the identification of biomarkers for and measures of biological age, yet knowledge gaps in geroscience are still numerous. Animal models of aging are the focus of this perspective, which discusses how experimental design can be optimized to inform and refine the development of translationally relevant measures and biomarkers of biological age. We provide recommendations to the field, including: the design of longitudinal studies in which subjects are deeply phenotyped via repeated multilevel behavioral/social/molecular assays; the need to consider sociobehavioral variables relevant for the species studied; and finally, the importance of assessing age of onset, severity of pathologies, and age-at-death. We highlight approaches to integrate biomarkers and measures of functional impairment using machine learning approaches designed to estimate biological age as well as to predict future health declines and mortality. We expect that advances in animal models of aging will be crucial for the future of translational geroscience but also for the next chapter of medicine.
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Affiliation(s)
- Alessandro Bartolomucci
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, Minnesota, USA
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Alice E Kane
- Institute for Systems Biology, Seattle, Washington, USA
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Lauren Gaydosh
- Department of Sociology, University of Texas at Austin, Austin, Texas, USA
| | - Maria Razzoli
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Brianah M McCoy
- School of Life Sciences, Arizona State University, Tempe, Arizona, USA
- Center for Evolution and Medicine, Arizona State University, Tempe, Arizona, USA
| | - Dan Ehninger
- German Center for Neurodegenerative Diseases, Bonn, Germany
| | - Brian H Chen
- California Pacific Medical Center Research Institute, Sutter Health, San Francisco, CA, 94143, USA
| | - Susan E Howlett
- Departments of Pharmacology and Medicine (Geriatric Medicine), Dalhousie University, Halifax, Nova Scotia, Canada
| | - Noah Snyder-Mackler
- School of Life Sciences, Arizona State University, Tempe, Arizona, USA
- Center for Evolution and Medicine, Arizona State University, Tempe, Arizona, USA
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Niu K, Chang L, Zhang R, Jiang Y, Shen X, Lu X, Zhang S, Ma K, Zhao Z, Li M, Hou Y, Wu Y. Bazi Bushen mitigates age-related muscular atrophy by alleviating cellular senescence of skeletal muscle. J Tradit Complement Med 2024; 14:510-521. [PMID: 39262657 PMCID: PMC11385411 DOI: 10.1016/j.jtcme.2024.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/06/2024] [Accepted: 01/21/2024] [Indexed: 09/13/2024] Open
Abstract
Background and aim Muscular atrophy is one of the most common age-related conditions characterized by the deterioration of skeletal muscle structures and impaired functions. It is associated with cellular senescence and chronic inflammation, which impair the function of muscle stem cells. Bazi Bushen (BZBS) is a patent compound Chinese medicine that has been shown to have anti-aging effects in various animal models. In this study, we investigated the effects and mechanisms of BZBS on muscular atrophy in naturally aged mice. Experimental procedure A muscular atrophy model of naturally aged mice (18 months) was employed with administration of BZBS (2 g/kg/d, 1 g/kg/d) and nicotinamide mononucleotide (NMN, 200 mg/kg/d). After six months of drug administration, muscle weight loss, muscle function and muscle histopathology were measured to evaluate the therapeutic effect of BZBS. The expression of cellular senescence, inflammatory and satellite cell-related factors were used to assess the effects of BZBS in inhibiting cellular senescence, reducing inflammation and improving muscle atrophy. Results and conclusion Compared with age matched natural aging mice, we found that BZBS improved muscle strength, mass, and morphology by reducing senescent cells, inflammatory cytokines, and intermyofiber fibrosis in aged muscle tissues. We also found that BZBS prevented the reduction of Pax7 positive stem cells and stimulated the activation and differentiation into myocytes. Our results suggest that BZBS might be a promising intervention in senile muscular atrophy.
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Affiliation(s)
- Kunxu Niu
- Hebei Medical University, Shijiazhuang, 050017, China
| | - Liping Chang
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine-Luobing Theory, Shijiazhuang, 050035, China
| | - Runtao Zhang
- Hebei Medical University, Shijiazhuang, 050017, China
| | - Yuning Jiang
- College of Traditional Chinese Medicine·College of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Xiaogang Shen
- Hebei Medical University, Shijiazhuang, 050017, China
| | - Xuan Lu
- Hebei Medical University, Shijiazhuang, 050017, China
| | - Shixiong Zhang
- College of Traditional Chinese Medicine·College of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Kun Ma
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- High-level TCM Key Disciplines of National Administration of Traditional Chinese Medicine-Luobing Theory, Shijiazhuang, 050035, China
| | - Zhiqin Zhao
- Hebei Medical University, Shijiazhuang, 050017, China
| | - Mengnan Li
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
- Key Laboratory of State Administration of TCM (Cardio-Cerebral Vessel Collateral Disease), Shijiazhuang, 050035, China
| | - Yunlong Hou
- Hebei Medical University, Shijiazhuang, 050017, China
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
| | - Yiling Wu
- Hebei Medical University, Shijiazhuang, 050017, China
- National Key Laboratory for Innovation and Transformation of Luobing Theory, Shijiazhuang, 050035, China
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7
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Alvarez-Kuglen M, Ninomiya K, Qin H, Rodriguez D, Fiengo L, Farhy C, Hsu WM, Kirk B, Havas A, Feng GS, Roberts AJ, Anderson RM, Serrano M, Adams PD, Sharpee TO, Terskikh AV. ImAge quantitates aging and rejuvenation. NATURE AGING 2024:10.1038/s43587-024-00685-1. [PMID: 39210148 DOI: 10.1038/s43587-024-00685-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 07/11/2024] [Indexed: 09/04/2024]
Abstract
For efficient, cost-effective and personalized healthcare, biomarkers that capture aspects of functional, biological aging, thus predicting disease risk and lifespan more accurately and reliably than chronological age, are essential. We developed an imaging-based chromatin and epigenetic age (ImAge) that captures intrinsic age-related trajectories of the spatial organization of chromatin and epigenetic marks in single nuclei, in mice. We show that such trajectories readily emerge as principal changes in each individual dataset without regression on chronological age, and that ImAge can be computed using several epigenetic marks and DNA labeling. We find that interventions known to affect biological aging induce corresponding effects on ImAge, including increased ImAge upon chemotherapy treatment and decreased ImAge upon caloric restriction and partial reprogramming by transient OSKM expression in liver and skeletal muscle. Further, ImAge readouts from chronologically identical mice inversely correlated with their locomotor activity, suggesting that ImAge may capture elements of biological and functional age. In sum, we developed ImAge, an imaging-based biomarker of aging with single-cell resolution rooted in the analysis of spatial organization of epigenetic marks.
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Affiliation(s)
| | - Kenta Ninomiya
- Harry Perkins Institute of Medical Research, The University of Western Australia, Perth, Western Australia, Australia
| | - Haodong Qin
- Department of Physics, University of California San Diego, La Jolla, CA, USA
| | | | | | - Chen Farhy
- Sanford Burnham Prebys, La Jolla, CA, USA
| | - Wei-Mien Hsu
- Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Brian Kirk
- Sanford Burnham Prebys, La Jolla, CA, USA
| | | | - Gen-Sheng Feng
- School of Medicine, Univerity of California San Diego, La Jolla, CA, USA
| | | | - Rozalyn M Anderson
- University of Wisconsin, Madison, WI, USA
- GRECC, William S Middleton Memorial Veterans Hospital, Madison, WI, USA
| | - Manuel Serrano
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona, Spain
- Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
- Altos Labs, Cambridge Institute of Science, Granta Park, UK
| | | | | | - Alexey V Terskikh
- Harry Perkins Institute of Medical Research, The University of Western Australia, Perth, Western Australia, Australia.
- The Scintillon Research Institute, San Diego, CA, USA.
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8
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Rose RA, Howlett SE. Preclinical Studies on the Effects of Frailty in the Aging Heart. Can J Cardiol 2024; 40:1379-1393. [PMID: 38460611 DOI: 10.1016/j.cjca.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 02/20/2024] [Accepted: 03/04/2024] [Indexed: 03/11/2024] Open
Abstract
Age is a major risk factor for the development of cardiovascular diseases in men and in women. However, not all people age at the same rate and those who are aging rapidly are considered frail, compared with their fit counterparts. Frailty is an important clinical challenge because those who are frail are more likely to develop and die from illnesses, including cardiovascular diseases, than fit people of the same age. This increase in susceptibility to cardiovascular diseases in older individuals might occur as the cellular and molecular mechanisms involved in the aging process facilitate structural and functional damage in the heart. Consistent with this, recent studies in murine frailty models have provided strong evidence that maladaptive cardiac remodelling in older mice is the most pronounced in mice with a high level of frailty. For example, there is evidence that ventricular hypertrophy and contractile dysfunction increase as frailty increases in aging mice. Additionally, fibrosis and slowing of conduction in the sinoatrial node and atria are proportional to the level of frailty. These modifications could predispose frail older adults to diseases like heart failure and atrial fibrillation. This preclinical work also raises the possibility that emerging interventions designed to "treat frailty" might also treat or prevent cardiovascular diseases. These findings might help to explain why frail older people are most likely to develop these disorders as they age.
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Affiliation(s)
- Robert A Rose
- Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Physiology and Pharmacology, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
| | - Susan E Howlett
- Department of Pharmacology, Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada; Department of Medicine (Geriatric Medicine), Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.
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9
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Bisset ES, Howlett SE. Sex-specific effects of frailty on cardiac structure and function: insights from preclinical models. Can J Physiol Pharmacol 2024; 102:476-486. [PMID: 38489788 DOI: 10.1139/cjpp-2024-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
Advanced age is an independent risk factor for cardiovascular diseases in both sexes. This is thought to be due, in part, to age-dependent cellular, structural, and functional changes in the heart, a process known as cardiac aging. An emerging view is that cardiac aging leads to the accumulation of cellular and subcellular deficits that increase susceptibility to cardiovascular diseases. Still, people age at different rates, with those aging rapidly considered frail. Evidence suggests that frailty, rather than simply age, is a major risk factor for cardiovascular disease and predicts adverse outcomes in those affected. Recent studies in mouse models of frailty show that many adverse changes associated with cardiac aging are more prominent in mice with a high degree of frailty. This suggests that frailty sets the stage for late life cardiovascular diseases to flourish and raises the possibility that treating frailty may treat cardiovascular diseases. These studies show that ventricular dysfunction increases with frailty in males only, whereas atrial dysfunction increases with frailty in both sexes. These results may shed light on the reasons that men and women can be susceptible to different cardiovascular diseases as they age, and why frail individuals are especially vulnerable to these disorders.
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Affiliation(s)
- Elise S Bisset
- Department of Pharmacology, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Susan E Howlett
- Department of Pharmacology, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Medicine (Geriatric Medicine), Dalhousie University, Halifax, NS B3H 4R2, Canada
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10
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Jansen HJ, McRae MD, Belke DD, Rose RA. Chronic angiotensin-converting enzyme inhibition attenuates frailty and protects against atrial fibrillation in aging mice. Heart Rhythm 2024:S1547-5271(24)02897-2. [PMID: 39019387 DOI: 10.1016/j.hrthm.2024.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 06/27/2024] [Accepted: 07/08/2024] [Indexed: 07/19/2024]
Abstract
BACKGROUND Aging is a major risk factor for atrial fibrillation (AF); however, not all individuals age at the same rate. Frailty, which is a measure of susceptibility to adverse health outcomes, can be quantified with a frailty index (FI). OBJECTIVE This study aimed to determine the effects of angiotensin-converting enzyme (ACE) inhibition on AF and atrial remodeling in aging and frail mice. METHODS Aging mice were treated with the ACE inhibitor enalapril for 6 months beginning at 16.5 months of age and frailty was quantified. AF susceptibility and atrial structure and function were assessed by intracardiac electrophysiology in anesthetized mice, high-resolution optical mapping in intact atrial preparations, patch clamping in isolated atrial myocytes, and histology and molecular biology in atrial tissues. RESULTS Enalapril attenuated frailty in aging mice with larger effects in females. AF susceptibility was increased in aging mice but attenuated by enalapril. AF susceptibility and duration also increased as a function of FI score. P-wave duration was increased and atrial conduction velocity was reduced in aging mice and improved after enalapril treatment. Furthermore, P-wave duration and atrial conduction velocity were strongly correlated with FI score. Atrial action potential upstroke velocity (Vmax) and Na+ current (INa) were reduced whereas atrial fibrosis was increased in aging mice. Action potential Vmax, INa, and fibrosis were improved by enalapril and also correlated with FI scores. CONCLUSION ACE inhibition with enalapril attenuates frailty and reduces AF susceptibility in aging mice by preventing atrial electrical and structural remodeling.
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Affiliation(s)
- Hailey J Jansen
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Megan D McRae
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Darrell D Belke
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Robert A Rose
- Libin Cardiovascular Institute, Department of Cardiac Sciences, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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11
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Collinge CW, Razzoli M, Mansk R, McGonigle S, Lamming DW, Pacak CA, van der Pluijm I, Niedernhofer L, Bartolomucci A. The mouse Social Frailty Index (mSFI): a novel behavioral assessment for impaired social functioning in aging mice. GeroScience 2024:10.1007/s11357-024-01263-4. [PMID: 38987495 DOI: 10.1007/s11357-024-01263-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 06/23/2024] [Indexed: 07/12/2024] Open
Abstract
Various approaches exist to quantify the aging process and estimate biological age on an individual level. Frailty indices based on an age-related accumulation of physical deficits have been developed for human use and translated into mouse models. However, declines observed in aging are not limited to physical functioning but also involve social capabilities. The concept of "social frailty" has been recently introduced into human literature, but no index of social frailty exists for laboratory mice yet. To fill this gap, we developed a mouse Social Frailty Index (mSFI) consisting of seven distinct assays designed to quantify social functioning which is relatively simple to execute and is minimally invasive. Application of the mSFI in group-housed male C57BL/6 mice demonstrated a progressively elevated levels of social frailty through the lifespan. Conversely, group-housed females C57BL/6 mice manifested social frailty only at a very old age. Female mice also showed significantly lower mSFI score from 10 months of age onward when compared to males. We also applied the mSFI in male C57BL/6 mice under chronic subordination stress and in chronic isolation, both of which induced larger increases in social frailty compared to age-matched group-housed males. Lastly, we show that the mSFI is enhanced in mouse models that show accelerated biological aging such as progeroid Ercc1-/Δ and Xpg-/- mice of both sexes compared to age matched littermate wild types. In summary, the mSFI represents a novel index to quantify trajectories of biological aging in mice and may help elucidate links between impaired social behavior and the aging process.
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Affiliation(s)
- Charles W Collinge
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA
| | - Maria Razzoli
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA
| | - Rachel Mansk
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA
| | - Seth McGonigle
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA
| | - Dudley W Lamming
- Department of Medicine, University of Wisconsin, Madison, WI, USA
- William S. Middleton Memorial Veterans Hospital, Madison, WI, USA
| | - Christina A Pacak
- Greg Marzolf Jr. Muscular Dystrophy Center & Department of Neurology, University of Minnesota, Minneapolis, MN, USA
| | - Ingrid van der Pluijm
- Department of Molecular Genetics, and Department of Vascular Surgery, Cardiovascular Institute, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Laura Niedernhofer
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN, USA
- Institute on the Biology of Aging and Metabolism, University of Minnesota, Minneapolis, MN, USA
| | - Alessandro Bartolomucci
- Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA.
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12
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Rakisheva A, Soloveva A, Shchendrygina A, Giverts I. Heart Failure With Preserved Ejection Fraction and Frailty: From Young to Superaged Coexisting HFpEF and Frailty. INTERNATIONAL JOURNAL OF HEART FAILURE 2024; 6:93-106. [PMID: 39081641 PMCID: PMC11284337 DOI: 10.36628/ijhf.2023.0064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 04/01/2024] [Accepted: 06/14/2024] [Indexed: 08/02/2024]
Abstract
Being commonly diagnosed in elderly women and associated with comorbidities as well as ageing-related cardio-vascular changes, heart failure with preserved ejection fraction (HFpEF) has been recently considered as a distinct cardiogeriatric syndrome. Frailty is another frequent geriatric syndrome. HFpEF and frailty share common underlying mechanisms, often co-exist, and represent each other's risk factors. A threshold of 65 years old is usually used to screen patients for both frailty and HFpEF in research and clinical settings. However, both HFpEF and frailty are very heterogenous conditions that may develop at younger ages. In this review we aim to provide a broader overview on the coexistence of HFpEF and frailty throughout the lifetime. We hypothesize that HFpEF and frailty patients' profiles (young, elderly, superaged) represent a continuum of the common ageing process modified by cumulative exposure to risk factors resulting to a presentation of HFpEF and frailty at different ages. We believe, that suggested approach might stimulate assessment of frailty in HFpEF assessment and vice versa regardless of age and early implementation of targeted interventions. Future studies of pathophysiology, clinical features, and outcomes of frailty in HFpEF by age are needed.
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Affiliation(s)
| | - Anzhela Soloveva
- Department of Cardiology, Almazov Almazov National Medical Research Centre, Saint Petersburg, Russia
| | | | - Ilya Giverts
- Maimonides Medical Center, Brooklyn, NY, USA
- Massachusetts General Hospital, Boston, MA, USA
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13
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Nair D, Liu CK, Raslan R, McAdams-DeMarco M, Hall RK. Frailty in Kidney Disease: A Comprehensive Review to Advance Its Clinical and Research Applications. Am J Kidney Dis 2024:S0272-6386(24)00836-9. [PMID: 38906506 DOI: 10.1053/j.ajkd.2024.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 04/05/2024] [Accepted: 04/20/2024] [Indexed: 06/23/2024]
Abstract
Frailty is a multisystem syndrome of decreased physiologic reserve that has been shown to strongly and independently predict morbidity and mortality. Frailty is prevalent in patients living with kidney disease and occurs earlier in individuals with kidney disease as compared to the general population. In this comprehensive review, we examine clinical and research applications of frailty in kidney disease populations. Specifically, we clarify the definition of frailty and address common misconceptions, review the mechanisms and epidemiology of frailty in kidney disease, discuss challenges and limitations in frailty measurement, and provide updated evidence related to risk factors for frailty, its associated adverse outcomes, and interventions. We further add to the literature in this topic by highlighting the potential applications of frailty measurement in the care of patients with kidney disease and conclude with our recommendations for future research related to this important syndrome.
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Affiliation(s)
- Devika Nair
- Vanderbilt University Medical Center, Division of Nephrology and Hypertension, Nashville, Tennessee; Vanderbilt Center for Health Services Research, Nashville, Tennessee; Tennessee Valley Veterans Affairs Healthcare System, Nashville, Tennessee
| | - Christine K Liu
- Geriatric Research and Education Clinical Center, Veteran Affairs Palo Alto Health Care System, Palo Alto, California; Section of Geriatric Medicine, Division of Primary Care and Population Health, School of Medicine, Stanford University, Stanford, California
| | - Rasha Raslan
- Department of Medicine, School of Medicine, Duke University, Durham, North Carolina
| | - Mara McAdams-DeMarco
- Department of Surgery, Langone Health and Grossman School of Medicine, New York University, New York, New York; Department of Population Health, Langone Health and Grossman School of Medicine, New York University, New York, New York
| | - Rasheeda K Hall
- Department of Medicine, School of Medicine, Duke University, Durham, North Carolina; Durham Veterans Affairs Medical Center, Durham, North Carolina.
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14
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Fujimoto Y, Matsue Y, Maeda D, Kagiyama N, Sunayama T, Dotare T, Jujo K, Saito K, Kamiya K, Saito H, Ogasahara Y, Maekawa E, Konishi M, Kitai T, Iwata K, Wada H, Hiki M, Kasai T, Nagamatsu H, Ozawa T, Izawa K, Yamamoto S, Aizawa N, Wakaume K, Oka K, Momomura SI, Minamino T. Association and Prognostic Value of Multidomain Frailty Defined by Cumulative Deficit and Phenotype Models in Patients With Heart Failure. Can J Cardiol 2024; 40:677-684. [PMID: 38007218 DOI: 10.1016/j.cjca.2023.11.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 11/27/2023] Open
Abstract
BACKGROUND Frailty is associated with a poor prognosis in older patients with heart failure (HF). However, multidomain frailty assessment tools have not been established in patients with HF, and the association between the frailty phenotype and the deficit-accumulation frailty index in these patients is unclear. We aimed to understand this relationship and evaluate the prognostic value of the deficit-accumulation frailty index in older patients with HF. METHODS We retrospectively analyzed FRAGILE-HF cohort, which consisted of prospectively registered hospitalized patients with HF aged ≥ 65 years. The frailty index was calculated using 34 health-related items. The physical, social, and cognitive domains of frailty were evaluated using a phenotypic approach. The primary endpoint was all-cause mortality. RESULTS Among 1027 patients with HF (median age, 81 years; male, 58.1%; median frailty index, 0.44), a higher frailty index was associated with a higher prevalence in all domains of cognitive, physical, and social frailty defined by the phenotype model. During the 2-year follow-up period, a higher frailty index was independently associated with all-cause death even after adjustment for Meta-Analysis Global Group in Chronic Heart Failure (MAGGIC) score plus log B-type natriuretic peptide (per 0.1 increase: hazard ratio, 1.21; 95% confidence interval, 1.07-1.37; P = 0.002). The addition of the frailty index to the baseline model yielded statistically significant incremental prognostic value (net reclassification improvement, 0.165; 95% confidence interval, 0.012-0.318; P = 0.034). CONCLUSIONS A higher frailty index was associated with a higher prevalence of all domains of frailty defined by the phenotype model and provided incremental prognostic information with pre-existing risk factors in older patients with HF.
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Affiliation(s)
- Yudai Fujimoto
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yuya Matsue
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan.
| | - Daichi Maeda
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Nobuyuki Kagiyama
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan; Department of Cardiology, The Sakakibara Heart Institute of Okayama, Okayama, Japan; Department of Digital Health and Telemedicine R&D, Juntendo University, Tokyo, Japan
| | - Tsutomu Sunayama
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Taishi Dotare
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kentaro Jujo
- Department of Cardiology, Nishiarai Heart Centre Hospital, Tokyo, Japan
| | - Kazuya Saito
- Department of Rehabilitation, The Sakakibara Heart Institute of Okayama, Okayama, Japan
| | - Kentaro Kamiya
- Department of Rehabilitation, School of Allied Health Sciences, Kitasato University, Sagamihara, Japan
| | - Hiroshi Saito
- Department of Rehabilitation, Kameda Medical Centre, Kamogawa, Japan
| | - Yuki Ogasahara
- Department of Nursing, National Hospital Organization Kure Medical Centre and Chugoku Cancer Centre, Hiroshima, Japan
| | - Emi Maekawa
- Department of Cardiovascular Medicine, Kitasato University School of Medicine, Sagamihara, Japan
| | - Masaaki Konishi
- Division of Cardiology, Yokohama City University Medical Centre, Yokohama, Japan
| | - Takeshi Kitai
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Centre, Osaka, Japan
| | - Kentaro Iwata
- Department of Rehabilitation, Kobe City Medical Centre General Hospital, Kobe, Japan
| | - Hiroshi Wada
- Department of Cardiovascular Medicine, Saitama Medical Centre, Jichi Medical University, Saitama, Japan
| | - Masaru Hiki
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takatoshi Kasai
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan; Cardiovascular Respiratory Sleep Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hirofumi Nagamatsu
- Department of Cardiology, Tokai University School of Medicine, Isehara, Japan
| | - Tetsuya Ozawa
- Department of Rehabilitation, Odawara Municipal Hospital, Odawara, Japan
| | - Katsuya Izawa
- Department of Rehabilitation, Matsui Heart Clinic, Saitama, Japan
| | - Shuhei Yamamoto
- Department of Rehabilitation, Shinshu University Hospital, Matsumoto, Japan
| | - Naoki Aizawa
- Department of Cardiovascular Medicine, Nephrology and Neurology, University of the Ryukyus, Okinawa, Japan
| | - Kazuki Wakaume
- Department of Rehabilitation, Kitasato University Medical Centre, Saitama, Japan
| | - Kazuhiro Oka
- Department of Rehabilitation, Saitama Citizens Medical Centre, Saitama, Japan
| | | | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan; Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, Tokyo, Japan
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15
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Mau T, Barnes HN, Blackwell TL, Kramer PA, Bauer SR, Marcinek DJ, Ramos SV, Forman DE, Toledo FGS, Hepple RT, Kritchevsky SB, Cummings SR, Newman AB, Coen PM, Cawthon PM. Lower muscle mitochondrial energetics is associated with greater phenotypic frailty in older women and men: the Study of Muscle, Mobility and Aging. GeroScience 2024; 46:2409-2424. [PMID: 37987886 PMCID: PMC10828481 DOI: 10.1007/s11357-023-01002-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 10/29/2023] [Indexed: 11/22/2023] Open
Abstract
BACKGROUND Phenotypic frailty syndrome identifies older adults at greater risk for adverse health outcomes. Despite the critical role of mitochondria in maintaining cellular function, including energy production, the associations between muscle mitochondrial energetics and frailty have not been widely explored in a large, well-phenotyped, older population. METHODS The Study of Muscle, Mobility and Aging (SOMMA) assessed muscle energetics in older adults (N = 879, mean age = 76.3 years, 59.2% women). 31Phosporous magnetic resonance spectroscopy measured maximal production of adenosine triphosphate (ATPmax) in vivo, while ex vivo high-resolution respirometry of permeabilized muscle fibers from the vastus lateralis measured maximal oxygen consumption supported by fatty acids and complex I- and II-linked carbohydrates (e.g., Max OXPHOSCI+CII). Five frailty criteria, shrinking, weakness, exhaustion, slowness, and low activity, were used to classify participants as robust (0, N = 397), intermediate (1-2, N = 410), or frail (≥ 3, N = 66). We estimated the proportional odds ratio (POR) for greater frailty, adjusted for multiple potential confounders. RESULTS One-SD decrements of most respirometry measures (e.g., Max OXPHOSCI+CII, adjusted POR = 1.5, 95%CI [1.2,1.8], p = 0.0001) were significantly associated with greater frailty classification. The associations of ATPmax with frailty were weaker than those between Max OXPHOSCI+CII and frailty. Muscle energetics was most strongly associated with slowness and low physical activity components. CONCLUSIONS Our data suggest that deficits in muscle mitochondrial energetics may be a biological driver of frailty in older adults. On the other hand, we did observe differential relationships between measures of muscle mitochondrial energetics and the individual components of frailty.
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Affiliation(s)
- Theresa Mau
- San Francisco Coordinating Center, California Pacific Medical Center Research Institute, San Francisco, CA, USA.
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA.
| | - Haley N Barnes
- San Francisco Coordinating Center, California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - Terri L Blackwell
- San Francisco Coordinating Center, California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - Philip A Kramer
- Department of Internal Medicine-Gerontology and Geriatric Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Scott R Bauer
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
- Department of Medicine and Urology, University of California, San Francisco, CA, USA
- Division of General Internal Medicine, San Francisco VA Healthcare System, San Francisco, CA, USA
| | - David J Marcinek
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - Sofhia V Ramos
- AdventHealth, Translational Research Institute, Orlando, FL, USA
| | - Daniel E Forman
- Department of Medicine-Division of Geriatrics and Cardiology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Geriatrics Research, Education, and Clinical Care (GRECC), VA Pittsburgh Healthcare System, Pittsburgh, PA, USA
| | - Frederico G S Toledo
- Department of Medicine-Division of Endocrinology and Metabolism, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Russell T Hepple
- Department of Physical Therapy, Department of Physiology and Aging, University of Florida, Gainesville, FL, USA
| | - Stephen B Kritchevsky
- Department of Internal Medicine-Gerontology and Geriatric Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, USA
| | - Steven R Cummings
- San Francisco Coordinating Center, California Pacific Medical Center Research Institute, San Francisco, CA, USA
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
| | - Anne B Newman
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Paul M Coen
- AdventHealth, Translational Research Institute, Orlando, FL, USA
| | - Peggy M Cawthon
- San Francisco Coordinating Center, California Pacific Medical Center Research Institute, San Francisco, CA, USA
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
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16
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Lamming DW. Quantification of healthspan in aging mice: Introducing FAMY and GRAIL. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.11.07.566044. [PMID: 37986745 PMCID: PMC10659332 DOI: 10.1101/2023.11.07.566044] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
The population around the world is graying, and as many of these individuals will spend years suffering from the burdens of age associated diseases, understanding how to increase healthspan, defined as the period of life free from disease and disability, is an urgent priority of geroscience research. The lack of agreed-upon quantitative metrics for measuring healthspan in aging mice has slowed progress in identifying interventions that do not simply increase lifespan, but also healthspan. Here, we define FAMY (Frailty-Adjusted Mouse Years) and GRAIL (Gauging Robust Aging when Increasing Lifespan) as new summary statistics for quantifying healthspan in mice. FAMY integrates lifespan data with longitudinal measurements of a widely utilized clinical frailty index, while GRAIL incorporates these measures and also adds information from widely utilized healthspan assays and the hallmarks of aging. Both metrics are conceptually similar to quality-adjusted life years (QALY), a widely-utilized measure of disease burden in humans, and can be readily calculated from data acquired during longitudinal and cross-sectional studies of mouse aging. We find that interventions generally thought to promote health, including calorie restriction, robustly improve healthspan as measured by FAMY and GRAIL. Finally, we show that the use of GRAIL provides new insights, and identify dietary restriction of protein or isoleucine as interventions that robustly promote healthspan but not longevity in female HET3 mice. We suggest that the routine integration of these measures into studies of aging in mice will allow the identification and development of interventions that promote healthy aging even in the absence of increased lifespan.
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Affiliation(s)
- Dudley W. Lamming
- Department of Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA
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17
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Verschoor CP, Theou O, Ma J, Montgomery P, Mossey S, Nangia P, Saskin R, Savage DW. Age- and sex-specific associations of frailty with mortality and healthcare utilization in community-dwelling adults from ontario, Canada. BMC Geriatr 2024; 24:223. [PMID: 38438981 PMCID: PMC10913570 DOI: 10.1186/s12877-024-04842-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/23/2024] [Indexed: 03/06/2024] Open
Abstract
BACKGROUND Understanding how health trajectories are related to the likelihood of adverse outcomes and healthcare utilization is key to planning effective strategies for improving health span and the delivery of care to older adults. Frailty measures are useful tools for risk stratification in community-based and primary care settings, although their effectiveness in adults younger than 60 is not well described. METHODS We performed a 10-year retrospective analysis of secondary data from the Ontario Health Study, which included 161,149 adults aged ≥ 18. Outcomes including all-cause mortality and hospital admissions were obtained through linkage to ICES administrative databases with a median follow-up of 7.1-years. Frailty was characterized using a 30-item frailty index. RESULTS Frailty increased linearly with age and was higher for women at all ages. A 0.1-increase in frailty was significantly associated with mortality (HR = 1.47), the total number of outpatient (IRR = 1.35) and inpatient (IRR = 1.60) admissions over time, and length of stay (IRR = 1.12). However, with exception to length of stay, these estimates differed depending on age and sex. The hazard of death associated with frailty was greater at younger ages, particularly in women. Associations with admissions also decreased with age, similarly between sexes for outpatient visits and more so in men for inpatient. CONCLUSIONS These findings suggest that frailty is an important health construct for both younger and older adults. Hence targeted interventions to reduce the impact of frailty before the age of 60 would likely have important economic and social implications in both the short- and long-term.
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Affiliation(s)
- Chris P Verschoor
- Health Sciences North Research Institute, Sudbury, ON, Canada.
- NOSM University, Sudbury/Thunder Bay, ON, Canada.
- , 56 Walford Road, Rm. 119, P3E 2H2, Sudbury, ON, Canada.
| | - Olga Theou
- School of Physiotherapy, Dalhousie University, Halifax, NS, Canada
| | - Jinhui Ma
- Dept. of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | | | - Sharolyn Mossey
- School of Nursing, Laurentian University, Sudbury, ON, Canada
| | - Parveen Nangia
- School of Social Sciences, Laurentian University, Sudbury, ON, Canada
| | | | - David W Savage
- Health Sciences North Research Institute, Sudbury, ON, Canada
- NOSM University, Sudbury/Thunder Bay, ON, Canada
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18
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Aminu AQ, Torrance N, Grant A, Kydd A. Is age discrimination a risk factor for frailty progression and frailty development among older adults? A prospective cohort analysis of the English Longitudinal Study of Ageing. Arch Gerontol Geriatr 2024; 118:105282. [PMID: 38016353 DOI: 10.1016/j.archger.2023.105282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 11/14/2023] [Accepted: 11/21/2023] [Indexed: 11/30/2023]
Abstract
BACKGROUND With the increasing global burden of frailty on healthcare resources, it is important to understand the modifiable risk factors of frailty. This study examined perceived age discrimination as a potential risk factor for frailty progression and frailty development among older adults. METHODS Prospective cohort study using data from Waves 5 to 9 of the English Longitudinal Study of Ageing (ELSA). Data on perceived age discrimination was collected only in Wave 5 of ELSA and analysed as baseline data in this study. Frailty was defined using the Frailty Index (FI) scores (0 to 1), calculated using the multidimensional deficits (scores ≥ 0.25 were considered frail). Binomial generalised estimating equation models (GEE) were fitted in R studio using perceived age discrimination as the main predictor with age, gender, long-standing illness, cognition, subjective social status status (SSS) and psychological wellbeing as covariates. Odd ratios were reported with 95 % confidence intervals (CI). RESULTS A total sample of 2,385 ELSA participants were included in the analysis. 55.8 % (n = 1312) were female, mean age 71.9 (SD ± 5.27) years and baseline frailty prevalence was 12.1 % (n = 288). Perceived age discrimination was reported by 38.4 % (n = 916) of the participants. Both frailty progression (OR 1.50, CI [1.26- 1.70]) and frailty development (OR 1.39, CI [1.14-1.62]) were significantly associated with perceived age discrimination in the fully adjusted models. Age (80+ years) (OR 3.72, CI [2.84-4.86]) and long-standing illness (OR 5.45, CI [4.43-6.67]) had the strongest association with respondents' frailty progression. CONCLUSION Perceived age discrimination significantly increased the risk of frailty progression and frailty development among ELSA participants.
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Affiliation(s)
- Abodunrin Quadri Aminu
- Older People and Frailty, NIHR Policy Research Unit, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, UK.
| | - Nicola Torrance
- School of Nursing, Midwifery & Paramedic Practice, Robert Gordon University, Aberdeen, AB10 7QG, UK
| | - Aileen Grant
- School of Nursing, Midwifery & Paramedic Practice, Robert Gordon University, Aberdeen, AB10 7QG, UK
| | - Angela Kydd
- School of Nursing, Midwifery & Paramedic Practice, Robert Gordon University, Aberdeen, AB10 7QG, UK
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Bålsrud P, Ulven SM, Christensen JJ, Ottestad I, Holven KB. Inflammatory markers and frailty in home-dwelling elderly, a cross-sectional study. BMC Geriatr 2024; 24:175. [PMID: 38373890 PMCID: PMC10877806 DOI: 10.1186/s12877-024-04690-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 01/09/2024] [Indexed: 02/21/2024] Open
Abstract
BACKGROUND Low-grade, chronic inflammation during ageing, ("inflammageing"), is suggested to be involved in the development of frailty in older age. However, studies on the association between frailty, using the frailty index definition, and inflammatory markers are limited. The aim of this study was to investigate the relationship between inflammatory markers and frailty index (FI) in older, home-dwelling adults. METHOD Home-dwelling men and women aged ≥ 70 years old, living in South-East Norway were recruited and included in a cross-sectional study. The FI used in the current study was developed according to Rockwood's frailty index and included 38 variables, resulting in an FI score between 0 and 1 for each participant. Circulating inflammatory markers (IL-6, CRP, IGF-1, cystatin C, cathepsin S, and glycoprotein Acetyls) were analyzed from non-fasting blood samples using ELISA. Whole-genome PBMC transcriptomics was used to study the association between FI score and inflammation. RESULTS The study population comprised 403 elderly (52% women), with a median age of 74 years and a mean BMI of 26.2 kg/m2. The mean FI score for the total group was 0.15 (range 0.005-0.56). The group was divided into a frail group (FI score ≥ 0.25) and non-frail group. After adjusting for BMI, age, sex, and smoking in the whole group, IL-6, cathepsin S, cystatin C, and Gp-acetyls remained significant associated to FI score (IL-6: 0.002, 95% CI: 0.001, 0.002, cathepsin S: 6.7e-06, 95% CI 2.44e-06, 0.00001, cystatin C: 0.004, 95% CI: 0.002, 0.006, Gp- Acetyls: 0.09, 95% CI: 0.05, 0.13, p < 0.01 for all), while CRP and IGF-1 were not (0.0003, 95% CI: -00001, 0.0007, p = 0.13, (-1.27e-06), 95% CI: (-0.0003), 0.0003, p = 0.99). There was a significant association between FI score and inflammatory markers, and FI score and monocyte-specific gene expression. CONCLUSIONS We found an association between FI score and inflammatory markers, and between FI score and monocyte-specific gene expression among elderly subjects above 70 years of age. Whether inflammation is a cause or consequence of frailty and whether the progression of frailty can be attenuated by reducing inflammation remains to be clarified.
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Affiliation(s)
- Pia Bålsrud
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Stine M Ulven
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Jacob J Christensen
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Inger Ottestad
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
- Clinical Nutrition, Department of Clinical Service, Division of Cancer Medicine, Oslo University Hospital, Oslo, Norway
| | - Kirsten B Holven
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway.
- National Advisory Unit on FH, Oslo University Hospital, Oslo, Norway.
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20
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Luciano A, Robinson L, Garland G, Lyons B, Korstanje R, Di Francesco A, Churchill GA. Longitudinal Fragility Phenotyping Predicts Lifespan and Age-Associated Morbidity in C57BL/6 and Diversity Outbred Mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.06.579096. [PMID: 38370707 PMCID: PMC10871234 DOI: 10.1101/2024.02.06.579096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Aging studies in mammalian models often depend on natural lifespan data as a primary outcome. Tools for lifespan prediction could accelerate these studies and reduce the need for veterinary intervention. Here, we leveraged large-scale longitudinal frailty and lifespan data on two genetically distinct mouse cohorts to evaluate noninvasive strategies to predict life expectancy in mice. We applied a modified frailty assessment, the Fragility Index, derived from existing frailty indices with additional deficits selected by veterinarians. We developed an ensemble machine learning classifier to predict imminent mortality (95% proportion of life lived [95PLL]). Our algorithm represented improvement over previous predictive criteria but fell short of the level of reliability that would be needed to make advanced prediction of lifespan and thus accelerate lifespan studies. Highly sensitive and specific frailty-based predictive endpoint criteria for aged mice remain elusive. While frailty-based prediction falls short as a surrogate for lifespan, it did demonstrate significant predictive power and as such must contain information that could be used to inform the conclusion of aging experiments. We propose a frailty-based measure of healthspan as an alternative target for aging research and demonstrate that lifespan and healthspan criteria reveal distinct aspects of aging in mice.
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21
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Castle J, Shaw G, Weller D, Fielder E, Egnuni T, Singh M, Skinner R, von Zglinicki T, Clifford SC, Short SC, Miwa S, Hicks D. In vivo modeling recapitulates radiotherapy delivery and late-effect profile for childhood medulloblastoma. Neurooncol Adv 2024; 6:vdae091. [PMID: 38946880 PMCID: PMC11212071 DOI: 10.1093/noajnl/vdae091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024] Open
Abstract
Background Medulloblastoma (MB) is the most common malignant pediatric brain tumor, with 5-year survival rates > 70%. Cranial radiotherapy (CRT) to the whole brain, with posterior fossa boost (PFB), underpins treatment for non-infants; however, radiotherapeutic insult to the normal brain has deleterious consequences to neurocognitive and physical functioning, and causes accelerated aging/frailty. Approaches to ameliorate radiotherapy-induced late-effects are lacking and a paucity of appropriate model systems hinders their development. Methods We have developed a clinically relevant in vivo model system that recapitulates the radiotherapy dose, targeting, and developmental stage of childhood medulloblastoma. Consistent with human regimens, age-equivalent (postnatal days 35-37) male C57Bl/6J mice received computerized tomography image-guided CRT (human-equivalent 37.5 Gy EQD2, n = 12) ± PFB (human-equivalent 48.7 Gy EQD2, n = 12), via the small animal radiation research platform and were longitudinally assessed for > 12 months. Results CRT was well tolerated, independent of PFB receipt. Compared to a sham-irradiated group (n = 12), irradiated mice were significantly frailer following irradiation (frailty index; P = .0002) and had reduced physical functioning; time to fall from a rotating rod (rotarod; P = .026) and grip strength (P = .006) were significantly lower. Neurocognitive deficits were consistent with childhood MB survivors; irradiated mice displayed significantly worse working memory (Y-maze; P = .009) and exhibited spatial memory deficits (Barnes maze; P = .029). Receipt of PFB did not induce a more severe late-effect profile. Conclusions Our in vivo model mirrored childhood MB radiotherapy and recapitulated features observed in the late-effect profile of MB survivors. Our clinically relevant model will facilitate both the elucidation of novel/target mechanisms underpinning MB late effects and the development of novel interventions for their amelioration.
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Affiliation(s)
- Jemma Castle
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Gary Shaw
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James’s University Hospital, Beckett St, Leeds, UK
| | - Dominic Weller
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Edward Fielder
- Biosciences Institute, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, UK
| | - Teklu Egnuni
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James’s University Hospital, Beckett St, Leeds, UK
| | - Mankaran Singh
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Roderick Skinner
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Thomas von Zglinicki
- Biosciences Institute, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, UK
| | - Steven C Clifford
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Susan C Short
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James’s University Hospital, Beckett St, Leeds, UK
| | - Satomi Miwa
- Biosciences Institute, Campus for Ageing and Vitality, Newcastle University, Newcastle upon Tyne, UK
| | - Debbie Hicks
- Wolfson Childhood Cancer Research Centre, Newcastle University Centre for Cancer, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
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22
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Pridham G, Rutenberg AD. Network dynamical stability analysis reveals key "mallostatic" natural variables that erode homeostasis and drive age-related decline of health. Sci Rep 2023; 13:22140. [PMID: 38092834 PMCID: PMC10719307 DOI: 10.1038/s41598-023-49129-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 12/04/2023] [Indexed: 12/17/2023] Open
Abstract
Using longitudinal study data, we dynamically model how aging affects homeostasis in both mice and humans. We operationalize homeostasis as a multivariate mean-reverting stochastic process. We hypothesize that biomarkers have stable equilibrium values, but that deviations from equilibrium of each biomarker affects other biomarkers through an interaction network-this precludes univariate analysis. We therefore looked for age-related changes to homeostasis using dynamic network stability analysis, which transforms observed biomarker data into independent "natural" variables and determines their associated recovery rates. Most natural variables remained near equilibrium and were essentially constant in time. A small number of natural variables were unable to equilibrate due to a gradual drift with age in their homeostatic equilibrium, i.e. allostasis. This drift caused them to accumulate over the lifespan course and makes them natural aging variables. Their rate of accumulation was correlated with risk of adverse outcomes: death or dementia onset. We call this tendency for aging organisms to drift towards an equilibrium position of ever-worsening health "mallostasis". We demonstrate that the effects of mallostasis on observed biomarkers are spread out through the interaction network. This could provide a redundancy mechanism to preserve functioning until multi-system dysfunction emerges at advanced ages.
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Affiliation(s)
- Glen Pridham
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, B3H 4R2, Canada
| | - Andrew D Rutenberg
- Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS, B3H 4R2, Canada.
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23
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van Sleen Y, Shetty SA, van der Heiden M, Venema MCA, Gutiérrez-Melo N, Toonen EJM, van Beek J, Buisman AM, van Baarle D, Sauce D. Frailty is related to serum inflammageing markers: results from the VITAL study. Immun Ageing 2023; 20:68. [PMID: 38012652 PMCID: PMC10680197 DOI: 10.1186/s12979-023-00391-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 11/08/2023] [Indexed: 11/29/2023]
Abstract
Frailty describes an age-associated state in individuals with an increased vulnerability and less resilience against adverse outcomes. To score frailty, studies have employed the questionnaires, such as the SF-36 and EQ-5D-3L, or the Frailty Index, a composite score based on deficit accumulation. Furthermore, ageing of the immune system is often accompanied by a state of low-grade inflammation (inflammageing). Here, we aimed to associate 29 circulating markers of inflammageing with frailty measures in a prospective cohort study to understand the mechanisms underlying ageing.Frailty measures and inflammageing markers were assessed in 317 participants aged 25-90. We determined four different measures of frailty: the Frailty Index based on 31 deficits, the EQ-5D-3L and two physical domains of the SF-36. Serum/plasma levels of inflammageing markers and CMV/EBV seropositivity were measured using different techniques: Quanterix, Luminex or ELISA.All four measures of frailty strongly correlated with age and BMI. Nineteen biomarkers correlated with age, some in a linear fashion (IL-6, YKL-40), some only in the oldest age brackets (CRP), and some increased at younger ages and then plateaued (CCL2, sIL-6R). After correcting for age, biomarkers, such as IL-6, CRP, IL-1RA, YKL-40 and elastase, were associated with frailty. When corrected for BMI, the number of associations reduced further.In conclusion, inflammageing markers, particularly markers reflecting innate immune activation, are related to frailty. These findings indicate that health decline and the accumulation of deficits with age is accompanied with a low-grade inflammation which can be detected by specific inflammatory markers.
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Affiliation(s)
| | | | | | | | - Nicolas Gutiérrez-Melo
- Sorbonne Université, INSERM, Centre d'Immunologie Et Des Maladies Infectieuses, Cimi-Paris, 75013, Paris, France
| | | | - Josine van Beek
- Center of Infectious Diseases Control, National Institute of Public Health and the Environment, Bilthoven, Netherlands
| | - Anne-Marie Buisman
- Center of Infectious Diseases Control, National Institute of Public Health and the Environment, Bilthoven, Netherlands
| | | | - Delphine Sauce
- Sorbonne Université, INSERM, Centre d'Immunologie Et Des Maladies Infectieuses, Cimi-Paris, 75013, Paris, France
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24
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Blodgett JM, Ahmadi M, Stamatakis E, Rockwood K, Hamer M. Fractal complexity of daily physical activity and cognitive function in a midlife cohort. Sci Rep 2023; 13:20340. [PMID: 37990028 PMCID: PMC10663528 DOI: 10.1038/s41598-023-47200-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 11/10/2023] [Indexed: 11/23/2023] Open
Abstract
High stability of fluctuation in physiological patterns across fixed time periods suggest healthy fractal complexity, while greater randomness in fluctuation patterns may indicate underlying disease processes. The importance of fractal stability in mid-life remains unexplored. We quantified fractal regulation patterns in 24-h accelerometer data and examined associations with cognitive function in midlife. Data from 5097 individuals (aged 46) from the 1970 British Cohort Study were analyzed. Participants wore thigh-mounted accelerometers for seven days and completed cognitive tests (verbal fluency, memory, processing speed; derived composite z-score). Detrended fluctuation analysis (DFA) was used to examine temporal correlations of acceleration magnitude across 25 time scales (range: 1 min-10 h). Linear regression examined associations between DFA scaling exponents (DFAe) and each standardised cognitive outcome. DFAe was normally distributed (mean ± SD: 0.90 ± 0.06; range: 0.72-1.25). In males, a 0.10 increase in DFAe was associated with a 0.30 (95% Confidence Interval: 0.14, 0.47) increase in composite cognitive z-score in unadjusted models; associations were strongest for verbal fluency (0.10 [0.04, 0.16]). Associations remained in fully-adjusted models for verbal fluency only (0.06 [0.00, 0.12]). There was no association between DFA and cognition in females. Greater fractal stability in men was associated with better cognitive function. This could indicate mechanisms through which fractal complexity may scale up to and contribute to cognitive clinical endpoints.
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Affiliation(s)
- Joanna M Blodgett
- Institute of Sport Exercise and Health, Division of Surgery and Interventional Science, University College London, London, UK.
| | - Matthew Ahmadi
- School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
- Mackenzie Wearables Research Hub, Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
| | - Emmanuel Stamatakis
- School of Health Sciences, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
- Mackenzie Wearables Research Hub, Charles Perkins Centre, University of Sydney, Sydney, NSW, Australia
| | - Kenneth Rockwood
- Geriatric Medicine Research, Department of Medicine, Dalhousie University, Halifax, NS, Canada
| | - Mark Hamer
- Institute of Sport Exercise and Health, Division of Surgery and Interventional Science, University College London, London, UK
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25
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Damanti S, Cilla M, Vitali G, Tiraferri V, Pomaranzi C, De Rubertis G, De Lorenzo R, Di Lucca G, Scotti R, Messina E, Dell’Acqua R, Guffanti M, Cinque P, Castagna A, Rovere-Querini P, Tresoldi M. Exploring the Association between Delirium and Malnutrition in COVID-19 Survivors: A Geriatric Perspective. Nutrients 2023; 15:4727. [PMID: 38004121 PMCID: PMC10674410 DOI: 10.3390/nu15224727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Older individuals face an elevated risk of developing geriatric syndromes when confronted with acute stressors like COVID-19. We assessed the connection between in-hospital delirium, malnutrition, and frailty in a cohort of COVID-19 survivors. Patients aged ≥65, hospitalized in a tertiary hospital in Milan for SARS-CoV-2 pneumonia, were enrolled and screened for in-hospital delirium with the 4 'A's Test (4AT) performed twice daily (morning and evening) during hospital stay. Malnutrition was assessed with the malnutrition universal screening tool (MUST) at hospital admission and with the mini-nutritional assessment short-form (MNA-SF) one month after hospital discharge. Frailty was computed with the frailty index one month after hospital discharge. Fifty patients (median age 78.5, 56% male) were enrolled. At hospital admission, 10% were malnourished. The 13 patients (26%) who developed delirium were frailer (7 vs. 4), experienced a higher in-hospital mortality (5 vs. 3), and were more malnourished one month after discharge (3 of the 4 patients with delirium vs. 6 of the 28 patients without delirium who presented at follow up). The 4AT scores correlated with the MNA-SF scores (r = -0.55, p = 0.006) and frailty (r = 0.35, p = 0.001). Frailty also correlated with MUST (r = 0.3, p = 0.04), MNA-SF (r = -0.42, p = 0.02), and hospitalization length (r = 0.44, p = 0.001). Delirium, malnutrition, and frailty are correlated in COVID-19 survivors. Screening for these geriatric syndromes should be incorporated in routine clinical practice.
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Affiliation(s)
- Sarah Damanti
- Vita Salute University, 20100 Milan, Italy; (V.T.); (C.P.); (G.D.R.); (R.D.L.); (A.C.); (P.R.-Q.)
- General Medicine and Continuity of Care Unit, IRCCS San Raffaele Hospital, 20132 Milan, Italy;
| | - Marta Cilla
- Center for Liver Disease, Division of Internal Medicine and Hepatology, IRCCS Ospedale San Raffaele, 20132 Milan, Italy;
| | - Giordano Vitali
- General Medicine and Continuity of Care Unit, IRCCS San Raffaele Hospital, 20132 Milan, Italy;
| | - Valeria Tiraferri
- Vita Salute University, 20100 Milan, Italy; (V.T.); (C.P.); (G.D.R.); (R.D.L.); (A.C.); (P.R.-Q.)
| | - Chiara Pomaranzi
- Vita Salute University, 20100 Milan, Italy; (V.T.); (C.P.); (G.D.R.); (R.D.L.); (A.C.); (P.R.-Q.)
| | - Giulia De Rubertis
- Vita Salute University, 20100 Milan, Italy; (V.T.); (C.P.); (G.D.R.); (R.D.L.); (A.C.); (P.R.-Q.)
| | - Rebecca De Lorenzo
- Vita Salute University, 20100 Milan, Italy; (V.T.); (C.P.); (G.D.R.); (R.D.L.); (A.C.); (P.R.-Q.)
| | - Giuseppe Di Lucca
- Unit of General Medicine and Advanced Care, IRCCS Ospedale San Raffaele, 20132 Milan, Italy; (G.D.L.); (R.S.); (M.T.)
| | - Raffaella Scotti
- Unit of General Medicine and Advanced Care, IRCCS Ospedale San Raffaele, 20132 Milan, Italy; (G.D.L.); (R.S.); (M.T.)
| | - Emanuela Messina
- Infectious Diseases Unit, San Raffaele Scientific Institute, 20132 Milan, Italy; (E.M.); (M.G.); (P.C.)
| | - Raffaele Dell’Acqua
- Infectious Diseases Unit, San Raffaele Scientific Institute, 20132 Milan, Italy; (E.M.); (M.G.); (P.C.)
| | - Monica Guffanti
- Infectious Diseases Unit, San Raffaele Scientific Institute, 20132 Milan, Italy; (E.M.); (M.G.); (P.C.)
| | - Paola Cinque
- Infectious Diseases Unit, San Raffaele Scientific Institute, 20132 Milan, Italy; (E.M.); (M.G.); (P.C.)
| | - Antonella Castagna
- Vita Salute University, 20100 Milan, Italy; (V.T.); (C.P.); (G.D.R.); (R.D.L.); (A.C.); (P.R.-Q.)
- Infectious Diseases Unit, San Raffaele Scientific Institute, 20132 Milan, Italy; (E.M.); (M.G.); (P.C.)
| | - Patrizia Rovere-Querini
- Vita Salute University, 20100 Milan, Italy; (V.T.); (C.P.); (G.D.R.); (R.D.L.); (A.C.); (P.R.-Q.)
- General Medicine and Continuity of Care Unit, IRCCS San Raffaele Hospital, 20132 Milan, Italy;
- Division of Immunology, Transplantation & Infectious Diseases, Università Vita-Salute San Raffaele, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Moreno Tresoldi
- Unit of General Medicine and Advanced Care, IRCCS Ospedale San Raffaele, 20132 Milan, Italy; (G.D.L.); (R.S.); (M.T.)
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26
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Alvarez-Kuglen M, Rodriguez D, Qin H, Ninomiya K, Fiengo L, Farhy C, Hsu WM, Havas A, Feng GS, Roberts AJ, Anderson RM, Serrano M, Adams PD, Sharpee TO, Terskikh AV. Imaging-based chromatin and epigenetic age, ImAge, quantitates aging and rejuvenation. RESEARCH SQUARE 2023:rs.3.rs-3479973. [PMID: 37986947 PMCID: PMC10659560 DOI: 10.21203/rs.3.rs-3479973/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Biomarkers of biological age that predict the risk of disease and expected lifespan better than chronological age are key to efficient and cost-effective healthcare1-3. To advance a personalized approach to healthcare, such biomarkers must reliably and accurately capture individual biology, predict biological age, and provide scalable and cost-effective measurements. We developed a novel approach - image-based chromatin and epigenetic age (ImAge) that captures intrinsic progressions of biological age, which readily emerge as principal changes in the spatial organization of chromatin and epigenetic marks in single nuclei without regression on chronological age. ImAge captured the expected acceleration or deceleration of biological age in mice treated with chemotherapy or following a caloric restriction regimen, respectively. ImAge from chronologically identical mice inversely correlated with their locomotor activity (greater activity for younger ImAge), consistent with the widely accepted role of locomotion as an aging biomarker across species. Finally, we demonstrated that ImAge is reduced following transient expression of OSKM cassette in the liver and skeletal muscles and reveals heterogeneity of in vivo reprogramming. We propose that ImAge represents the first-in-class imaging-based biomarker of aging with single-cell resolution.
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Affiliation(s)
| | | | - Haodong Qin
- UCSD, Department of Physics, La Jolla, CA 92093, USA
| | | | | | - Chen Farhy
- Sanford Burnham Prebys, La Jolla CA 92037, USA
| | - Wei-Mien Hsu
- Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Aaron Havas
- Sanford Burnham Prebys, La Jolla CA 92037, USA
| | - Gen-Sheng Feng
- UCSD School of Medicine, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | | | | | - Manuel Serrano
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona 08028, Spain
- Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain
- Altos Labs, Cambridge Institute of Science, Granta Park CB21 6GP, UK
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27
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Evans F, Alí-Ruiz D, Rego N, Negro-Demontel ML, Lago N, Cawen FA, Pannunzio B, Sanchez-Molina P, Reyes L, Paolino A, Rodríguez-Duarte J, Pérez-Torrado V, Chicote-González A, Quijano C, Marmisolle I, Mulet AP, Schlapp G, Meikle MN, Bresque M, Crispo M, Savio E, Malagelada C, Escande C, Peluffo H. CD300f immune receptor contributes to healthy aging by regulating inflammaging, metabolism, and cognitive decline. Cell Rep 2023; 42:113269. [PMID: 37864797 DOI: 10.1016/j.celrep.2023.113269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 08/25/2023] [Accepted: 09/28/2023] [Indexed: 10/23/2023] Open
Abstract
Emerging evidence suggests that immune receptors may participate in many aging-related processes such as energy metabolism, inflammation, and cognitive decline. CD300f, a TREM2-like lipid-sensing immune receptor, is an exceptional receptor as it integrates activating and inhibitory cell-signaling pathways that modulate inflammation, efferocytosis, and microglial metabolic fitness. We hypothesize that CD300f can regulate systemic aging-related processes and ultimately healthy lifespan. We closely followed several cohorts of two strains of CD300f-/- and WT mice of both sexes for 30 months and observed an important reduction in lifespan and healthspan in knockout mice. This was associated with systemic inflammaging, increased cognitive decline, reduced brain glucose uptake observed by 18FDG PET scans, enrichment in microglial aging/neurodegeneration phenotypes, proteostasis alterations, senescence, increased frailty, and sex-dependent systemic metabolic changes. Moreover, the absence of CD300f altered macrophage immunometabolic phenotype. Taken together, we provide strong evidence suggesting that myeloid cell CD300f immune receptor contributes to healthy aging.
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Affiliation(s)
- Frances Evans
- Department of Histology and Embryology, Faculty of Medicine, UDELAR, Montevideo, Uruguay; Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Daniela Alí-Ruiz
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Natalia Rego
- Bioinformatics Unit, Institut Pasteur de Montevideo, Montevideo, Uruguay; Faculty of Sciences, UDELAR, Montevideo, Uruguay
| | - María Luciana Negro-Demontel
- Department of Histology and Embryology, Faculty of Medicine, UDELAR, Montevideo, Uruguay; Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Natalia Lago
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Fabio Andrés Cawen
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Bruno Pannunzio
- Department of Histology and Embryology, Faculty of Medicine, UDELAR, Montevideo, Uruguay; Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Paula Sanchez-Molina
- Department of Cell Biology, Physiology and Immunology, and Institute of Neuroscience, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Laura Reyes
- Uruguayan Center for Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Andrea Paolino
- Uruguayan Center for Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Jorge Rodríguez-Duarte
- Laboratory of Vascular Biology and Drug Development, INDICYO Program, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Valentina Pérez-Torrado
- Metabolic Diseases and Aging Laboratory, INDICYO Program, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Almudena Chicote-González
- Unitat de Bioquímica i Biologia Molecular, Departament de Biomedicina, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona (UB), Barcelona, Spain; Institut de Neurociències, Universitat de Barcelona (UB), Barcelona, Spain
| | - Celia Quijano
- Departamento de Bioquímica y Centro de Investigaciones Biomédicas (CEINBIO), Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Inés Marmisolle
- Departamento de Bioquímica y Centro de Investigaciones Biomédicas (CEINBIO), Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Ana Paula Mulet
- Unidad de Biotecnología en Animales de Laboratorio, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Geraldine Schlapp
- Unidad de Biotecnología en Animales de Laboratorio, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - María Noel Meikle
- Unidad de Biotecnología en Animales de Laboratorio, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Mariana Bresque
- Metabolic Diseases and Aging Laboratory, INDICYO Program, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Martina Crispo
- Unidad de Biotecnología en Animales de Laboratorio, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Eduardo Savio
- Uruguayan Center for Molecular Imaging (CUDIM), Montevideo, Uruguay
| | - Cristina Malagelada
- Unitat de Bioquímica i Biologia Molecular, Departament de Biomedicina, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona (UB), Barcelona, Spain; Institut de Neurociències, Universitat de Barcelona (UB), Barcelona, Spain
| | - Carlos Escande
- Metabolic Diseases and Aging Laboratory, INDICYO Program, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Hugo Peluffo
- Department of Histology and Embryology, Faculty of Medicine, UDELAR, Montevideo, Uruguay; Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay; Unitat de Bioquímica i Biologia Molecular, Departament de Biomedicina, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona (UB), Barcelona, Spain; Institut de Neurociències, Universitat de Barcelona (UB), Barcelona, Spain.
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28
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Muscari A, Forti P, Brizi M, Magalotti D, Capelli E, Potì S, Piro F, Pandolfi P, Perlangeli V, Ramazzotti E, Barbara G. Can We Slow Down Biological Age Progression? Study Protocol for the proBNPage Reduction (PBAR) Randomized, Double-Blind, Placebo-Controlled Trial (Effects of 4 "Anti-Aging" Food Supplements in Healthy Older Adults). Clin Interv Aging 2023; 18:1813-1825. [PMID: 37915546 PMCID: PMC10617523 DOI: 10.2147/cia.s422371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 08/07/2023] [Indexed: 11/03/2023] Open
Abstract
Purpose The availability of a simple and reliable marker of biological age might allow an acceleration of the research in the field of longevity extension. Previous studies suggest that this marker might be the N-terminal of B-type natriuretic peptide precursor (NT-proBNP), from which proBNPage, a biological age surrogate, can be calculated. Objectives of the study: 1) To fine-tune the method of proBNPage progression assessment and 2) To establish whether 4 "anti-aging" treatments, which provided promising results in previous studies, can modify proBNPage progression. Patients and Methods This is a double-blind randomized placebo-controlled clinical trial on 120 adults aged 65-80 years, free of cardiovascular diseases. Participants will be randomized into 3 groups: A) Coenzyme Q10 100 mg bid + Selenium 100 mcg; B) Resveratrol 350 mg bid + TA-65 (Astragalus Membranaceus extract) 100U; C) Placebo-1 bid + Placebo-2. They will be followed for 2 years and checked 8 times, to assess both proBNPage progression and treatment safety. Secondary variables (handgrip strength, aerobic capacity at the step test and quality of life) will also be assessed. Primary outcome will be the demonstration of significant changes of proBNPage, compared to baseline, in the 3 groups at 6, 12, 18 and 24 months. Secondary outcome will be the demonstration of similar changes of secondary variables. Statistical analyses will be mainly performed by repeated measures ANOVA (both according to intention to treat and per protocol) and paired t tests. The study was approved by the Ethics Committee Area Vasta Emilia Centro, Emilia-Romagna Region, ID: 64/2022/Sper/AOUBo. Trial registration: ClinicalTrials.gov, NCT05500742. Conclusion The use of proBNPage as a surrogate of biological age may prove an easy method to select anti-aging treatments worthy of further, more complex assessments.
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Affiliation(s)
- Antonio Muscari
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Paola Forti
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
- Medical-Surgical Department of Digestive, Hepatic and Endocrine-Metabolic Diseases, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Mara Brizi
- Medical-Surgical Department of Digestive, Hepatic and Endocrine-Metabolic Diseases, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Donatella Magalotti
- Medical-Surgical Department of Digestive, Hepatic and Endocrine-Metabolic Diseases, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Eleonora Capelli
- Medical-Surgical Department of Digestive, Hepatic and Endocrine-Metabolic Diseases, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Simona Potì
- Medical-Surgical Department of Digestive, Hepatic and Endocrine-Metabolic Diseases, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Filomena Piro
- Pharmaceutical Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Paolo Pandolfi
- Epidemiological and Health Promotion Unit, Department of Public Health, AUSL Bologna, Bologna, Italy
| | - Vincenza Perlangeli
- Epidemiological and Health Promotion Unit, Department of Public Health, AUSL Bologna, Bologna, Italy
| | | | - Giovanni Barbara
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
- Medical-Surgical Department of Digestive, Hepatic and Endocrine-Metabolic Diseases, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - On behalf of PBAR Study Group
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
- Medical-Surgical Department of Digestive, Hepatic and Endocrine-Metabolic Diseases, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Pharmaceutical Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Epidemiological and Health Promotion Unit, Department of Public Health, AUSL Bologna, Bologna, Italy
- LUM Metropolitan Laboratory, AUSL Bologna, Bologna, Italy
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Thyne KM, Salmon AB. Sexually dimorphic effects of methionine sulfoxide reductase A (MsrA) on murine longevity and health span during methionine restriction. GeroScience 2023; 45:3003-3017. [PMID: 37391679 PMCID: PMC10643651 DOI: 10.1007/s11357-023-00857-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 06/17/2023] [Indexed: 07/02/2023] Open
Abstract
Methionine restriction (MR) extends lifespan in various model organisms, and understanding the molecular effectors of MR could expand the repertoire of tools targeting the aging process. Here, we address to what extent the biochemical pathway responsible for redox metabolism of methionine plays in regulating the effects of MR on lifespan and health span. Aerobic organisms have evolved methionine sulfoxide reductases to counter the oxidation of the thioether group contained in the essential amino acid methionine. Of these enzymes, methionine sulfoxide reductase A (MsrA) is ubiquitously expressed in mammalian tissues and has subcellular localization in both the cytosol and mitochondria. Loss of MsrA increases sensitivity to oxidative stress and has been associated with increased susceptibility to age-associated pathologies including metabolic dysfunction. We rationalized that limiting the available methionine with MR may place increased importance on methionine redox pathways, and that MsrA may be required to maintain available methionine for its critical uses in cellular homeostasis including protein synthesis, metabolism, and methylation. Using a genetic mutant mouse lacking MsrA, we tested the requirement for this enzyme in the effects of MR on longevity and markers of healthy aging late in life. When initiated in adulthood, we found that MR had minimal effects in males and females regardless of MsrA status. MR had minimal effect on lifespan with the exception of wild-type males where loss of MsrA slightly increased lifespan on MR. We also observed that MR drove an increase in body weight in wild-type mice only, but mice lacking MsrA tended to maintain more stable body weight throughout their lives. We also found that MR had greater benefit to males than females in terms of glucose metabolism and some functional health span assessments, but MsrA generally had minimal impact on these metrics. Frailty was also found to be unaffected by MR or MsrA in aged animals. We found that in general, MsrA was not required for the beneficial effects of MR on longevity and health span.
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Affiliation(s)
- Kevin M Thyne
- Sam and Ann Barshop Institute for Longevity and Aging Studies, University of Texas Health San Antonio, San Antonio, TX, 78229, USA
| | - Adam B Salmon
- Sam and Ann Barshop Institute for Longevity and Aging Studies, University of Texas Health San Antonio, San Antonio, TX, 78229, USA.
- Department of Molecular Medicine, University of Texas Health San Antonio, San Antonio, TX, 78229, USA.
- Geriatric Research Education and Clinical Center, Audie L. Murphy Hospital, South Texas Veterans Health Care System, San Antonio, TX, 78229, USA.
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Melvin RL, Ruple A, Pearson EB, Olby NJ, Fitzpatrick AL, Creevy KE. A review of frailty instruments in human medicine and proposal of a frailty instrument for dogs. Front Vet Sci 2023; 10:1139308. [PMID: 37441560 PMCID: PMC10333704 DOI: 10.3389/fvets.2023.1139308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 06/09/2023] [Indexed: 07/15/2023] Open
Abstract
Over the last few decades, frailty has become a pillar of research and clinical assessment in human gerontology. This complex syndrome, characterized by loss of physiologic reserves leading to decreased resilience to stressors, is of critical importance because it predicts higher risks of poor health outcomes, including mortality. Thus, identifying frailty among the elderly human population has become a key focus of gerontology. This narrative review presents current scientific literature on frailty in both humans and animals. The authors discuss the need for an accessible frailty instrument for companion dogs suitable for general use in veterinary medicine and the advances that would be facilitated by this instrument. A phenotypic frailty instrument for companion dogs, utilizing components that are easily collected by owners, or in the general practice setting, is proposed. The authors elaborate on the domains (physical condition, physical activity, mobility, strength, cognitive task performance, and social behavior), factors that will be included, and the data from the Dog Aging Project that inform each domain.
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Affiliation(s)
- Rachel L. Melvin
- Department of Small Animal Clinical Sciences, Texas A&M University School of Veterinary Medicine & Biomedical Sciences, College Station, TX, United States
| | - Audrey Ruple
- Department of Population Health Sciences, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
| | - Elizabeth B. Pearson
- Department of Small Animal Clinical Sciences, Texas A&M University School of Veterinary Medicine & Biomedical Sciences, College Station, TX, United States
| | - Natasha J. Olby
- Department of Clinical Sciences, NC State University College of Veterinary Medicine, Raleigh, NC, United States
| | | | - Kate E. Creevy
- Department of Small Animal Clinical Sciences, Texas A&M University School of Veterinary Medicine & Biomedical Sciences, College Station, TX, United States
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Shehadeh AA, McLaren GW, Collins JT, Munene G, Sawyer RG, Shebrain SA. Frailty as a Predictor of Surgical Outcomes Following Femoral Hernia Repair. Am Surg 2023; 89:2254-2261. [PMID: 35428419 DOI: 10.1177/00031348221084085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
BACKGROUND Femoral hernias are associated with significant morbidity and mortality due to risk of strangulation. Frailty has shown to be strongly associated with adverse outcomes. A modified five-factor frailty index (mFI-5) is a simple validated predictor of postoperative complications and mortality within the ACS-NSQIP® database. This study aims to evaluate the impact of frailty and age on 30-day outcomes after femoral hernia repair. METHODS Patients who underwent femoral hernia repair were queried using the ACS-NSQIP database (2017) and divided into two groups based on frailty score (FS): Frail (FS = 1-5) and Non-frail (FS = 0). We evaluated the association between postoperative outcomes and frailty, age, sex, presentation, ASA class, timing of surgery, and surgical approaches. Univariate analysis followed by a multivariable logistic regression model was performed to evaluate postoperative morbidity. RESULTS Of a total of 1,295 patients, 540 (42.7%) were in the Frail group. No differences in sex and race proportions were observed between groups. The Frail group had a higher rate of serious morbidity (4.4% vs 1.9%, P < .001), overall morbidity (7.8% vs 3.4%, P < .010), readmission rate (5.4% vs 2.3%, P = .003), and median (IQR) hospital length of stay (1 [0, 4] vs 0 [0, 1] days, P < .001). In multivariable analysis, male sex, presentation with complication, emergency surgery, and FS were associated with increased odds of overall morbidity. All deaths were in the Frail group. CONCLUSION(S) Frailty, male sex, presentation with obstruction/strangulation, and emergency surgery are independent predictors of increased 30-day morbidity. Thirty-day mortality was noted in the Frail group.
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Affiliation(s)
- Ayman A Shehadeh
- Department of Surgery, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
| | - Graham W McLaren
- Department of Surgery, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
| | - John T Collins
- Department of Surgery, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
| | - Gitonga Munene
- Department of Surgery, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
| | - Robert G Sawyer
- Department of Surgery, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
| | - Saad A Shebrain
- Department of Surgery, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA
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Logan B, Viecelli AK, Johnson DW, Aquino EM, Bailey J, Comans TA, Gray LC, Hawley CM, Hickey LE, Janda M, Jaure A, Jose MD, Kalaw E, Kiriwandeniya C, Matsuyama M, Mihala G, Nguyen KH, Pascoe E, Pole JD, Polkinghorne KR, Pond D, Raj R, Reidlinger DM, Scholes-Robertson N, Varghese J, Wong G, Hubbard RE. Study protocol for The GOAL Trial: comprehensive geriatric assessment for frail older people with chronic kidney disease to increase attainment of patient-identified goals-a cluster randomised controlled trial. Trials 2023; 24:365. [PMID: 37254217 DOI: 10.1186/s13063-023-07363-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 05/08/2023] [Indexed: 06/01/2023] Open
Abstract
BACKGROUND An increasing number of older people are living with chronic kidney disease (CKD). Many have complex healthcare needs and are at risk of deteriorating health and functional status, which can adversely affect their quality of life. Comprehensive geriatric assessment (CGA) is an effective intervention to improve survival and independence of older people, but its clinical utility and cost-effectiveness in frail older people living with CKD is unknown. METHODS The GOAL Trial is a pragmatic, multi-centre, open-label, superiority, cluster randomised controlled trial developed by consumers, clinicians, and researchers. It has a two-arm design, CGA compared with standard care, with 1:1 allocation of a total of 16 clusters. Within each cluster, study participants ≥ 65 years of age (or ≥ 55 years if Aboriginal or Torres Strait Islander (First Nations Australians)) with CKD stage 3-5/5D who are frail, measured by a Frailty Index (FI) of > 0.25, are recruited. Participants in intervention clusters receive a CGA by a geriatrician to identify medical, social, and functional needs, optimise medication prescribing, and arrange multidisciplinary referral if required. Those in standard care clusters receive usual care. The primary outcome is attainment of self-identified goals assessed by standardised Goal Attainment Scaling (GAS) at 3 months. Secondary outcomes include GAS at 6 and 12 months, quality of life (EQ-5D-5L), frailty (Frailty Index - Short Form), transfer to residential aged care facilities, cost-effectiveness, and safety (cause-specific hospitalisations, mortality). A process evaluation will be conducted in parallel with the trial including whether the intervention was delivered as intended, any issue or local barriers to intervention delivery, and perceptions of the intervention by participants. The trial has 90% power to detect a clinically meaningful mean difference in GAS of 10 units. DISCUSSION This trial addresses patient-prioritised outcomes. It will be conducted, disseminated and implemented by clinicians and researchers in partnership with consumers. If CGA is found to have clinical and cost-effectiveness for frail older people with CKD, the intervention framework could be embedded into routine clinical practice. The implementation of the trial's findings will be supported by presentations at conferences and forums with clinicians and consumers at specifically convened workshops, to enable rapid adoption into practice and policy for both nephrology and geriatric disciplines. It has potential to materially advance patient-centred care and improve clinical and patient-reported outcomes (including quality of life) for frail older people living with CKD. TRIAL REGISTRATION ClinicalTrials.gov NCT04538157. Registered on 3 September 2020.
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Affiliation(s)
- B Logan
- Centre for Health Services Research, University of Queensland, Brisbane, Australia.
| | - A K Viecelli
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Australia
| | - D W Johnson
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Australia
- Centre for Kidney Disease Research, Translational Research Institute, Brisbane, Australia
| | - E M Aquino
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
| | - J Bailey
- Centre for Health Services Research, University of Queensland, Brisbane, Australia
| | - T A Comans
- Centre for Health Services Research, University of Queensland, Brisbane, Australia
| | - L C Gray
- Centre for Health Services Research, University of Queensland, Brisbane, Australia
| | - C M Hawley
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
- Department of Kidney and Transplant Services, Princess Alexandra Hospital, Brisbane, Australia
| | - L E Hickey
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
| | - M Janda
- Centre for Health Services Research, University of Queensland, Brisbane, Australia
| | - A Jaure
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
| | - M D Jose
- Renal Unit, Royal Hobart Hospital, Hobart, Australia
- School of Medicine, University of Tasmania, Hobart, Australia
| | - E Kalaw
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
| | - C Kiriwandeniya
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
| | - M Matsuyama
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
| | - G Mihala
- Centre for Health Services Research, University of Queensland, Brisbane, Australia
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
| | - K H Nguyen
- Centre for Health Services Research, University of Queensland, Brisbane, Australia
- Global Brain Health Institute, Trinity College, Dublin, Ireland
| | - E Pascoe
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
| | - J D Pole
- Centre for Health Services Research, University of Queensland, Brisbane, Australia
- Dalla Lana School of Public Health, The University of Toronto, Toronto, Canada
| | - K R Polkinghorne
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
- Department of Medicine, Monash University, Melbourne, Australia
- Department of Nephrology, Monash Health, Melbourne, Australia
| | - D Pond
- School of Rural Medicine, University of New England, Armidale, Australia
- Wicking Centre, University of Tasmania, Hobart, Australia
- School of Medicine, Western Sydney University, Sydney, Australia
| | - R Raj
- School of Medicine, University of Tasmania, Hobart, Australia
- Department of Nephrology, Launceston General Hospital, Launceston, Australia
| | - D M Reidlinger
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
| | - N Scholes-Robertson
- Rural and Remote Health, College of Medicine and Public Health, Flinders University, Adelaide, Australia
| | - J Varghese
- Australasian Kidney Trials Network, University of Queensland, Brisbane, Australia
| | - G Wong
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Sydney, Australia
- Centre for Transplant and Renal Research, Westmead Hospital, Sydney, Australia
| | - R E Hubbard
- Centre for Health Services Research, University of Queensland, Brisbane, Australia
- Department of Geriatric Medicine, Princess Alexandra Hospital, Brisbane, Australia
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Knufinke M, MacArthur MR, Ewald CY, Mitchell SJ. Sex differences in pharmacological interventions and their effects on lifespan and healthspan outcomes: a systematic review. FRONTIERS IN AGING 2023; 4:1172789. [PMID: 37305228 PMCID: PMC10249017 DOI: 10.3389/fragi.2023.1172789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/10/2023] [Indexed: 06/13/2023]
Abstract
With an increasing aging population, the burden of age-related diseases magnifies. To alleviate this burden, geroprotection has been an area of intense research focus with the development of pharmacological interventions that target lifespan and/or healthspan. However, there are often sex differences, with compounds mostly tested in male animals. Given the importance of considering both sexes in preclinical research, this neglects potential benefits for the female population, as interventions tested in both sexes often show clear sexual dimorphisms in their biological responses. To further understand the prevalence of sex differences in pharmacological geroprotective intervention studies, we performed a systematic review of the literature according to the PRISMA guidelines. Seventy-two studies met our inclusion criteria and were classified into one of five subclasses: FDA-repurposed drugs, novel small molecules, probiotics, traditional Chinese medicine, and antioxidants, vitamins, or other dietary supplements. Interventions were analyzed for their effects on median and maximal lifespan and healthspan markers, including frailty, muscle function and coordination, cognitive function and learning, metabolism, and cancer. With our systematic review, we found that twenty-two out of sixty-four compounds tested were able to prolong both lifespan and healthspan measures. Focusing on the use of female and male mice, and on comparing their outcomes, we found that 40% of studies only used male mice or did not clarify the sex. Notably, of the 36% of pharmacologic interventions that did use both male and female mice, 73% of these studies showed sex-specific outcomes on healthspan and/or lifespan. These data highlight the importance of studying both sexes in the search for geroprotectors, as the biology of aging is not the same in male and female mice. Systematic Review Registration: [website], identifier [registration number].
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Sabini E, O'Mahony A, Caturegli P. MyMD-1 Improves Health Span and Prolongs Life Span in Old Mice: A Noninferiority Study to Rapamycin. J Gerontol A Biol Sci Med Sci 2023; 78:227-235. [PMID: 35914953 DOI: 10.1093/gerona/glac142] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Indexed: 11/13/2022] Open
Abstract
Aging and age-related diseases represent a compelling therapeutic goal for senolytics and drugs targeting inflammatory or metabolic pathways. We compared MyMD-1, a synthetic derivative of the alkaloid myosmine capable of suppressing TNF-α production, to rapamycin, the best characterized drug endowed with antiaging properties. In vivo, a longitudinal cohort of 54 C57BL/6 mice, 19-month-old at the start, was randomized to receive MyMD-1, high-dose (126 ppm) rapamycin, or low-dose (14 ppm) rapamycin plus metformin. Each treatment arm included 18 mice (10 females and 8 males) and was followed for 16 months or until death. Life span was significantly longer in MyMD-1 than rapamycin (p = .019 vs high-dose and .01 vs low-dose) in a Cox survival model that accounted for sex and serum levels of IL-6, TNF-α, and IL-17A. MyMD-1 also improved several health span characteristics, resulting in milder body weight loss, greater muscle strength, and slower progression to frailty. In vitro, MyMD-1 and rapamycin were compared using a panel of 12 human primary cell systems (BioMAP Diversity PLUS), where a total of 148 biomarkers were measured. MyMD-1 possessed antiproliferative, anti-inflammatory, and antifibrotic properties. Many were shared with rapamycin, but MyMD-1 was more active in the inhibition of proinflammatory and profibrotic biomarkers. Overall, MyMD-1 emerges as a new compound that, even when begun at an advanced age, induces beneficial effects on health and life span by modulating inflammation and tissue remodeling.
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Affiliation(s)
- Elena Sabini
- Johns Hopkins Hospital, School of Medicine, Department of Pathology, Baltimore, Maryland, USA
| | - Alison O'Mahony
- Eurofins Discovery, Phenotypic Services, St. Charles, Missouri, USA
| | - Patrizio Caturegli
- Johns Hopkins Hospital, School of Medicine, Department of Pathology, Baltimore, Maryland, USA
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Jin X, Wang Y, Wu Y, Liang Y, Li Y, Sun X, Yan S, Mei L, Tao J, Song J, Pan R, Yi W, Cheng J, Yang L, Su H. The increased medical burden associated with frailty is partly attributable to household solid fuel: A nationwide prospective study of middle-aged and older people in China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159829. [PMID: 36374752 DOI: 10.1016/j.scitotenv.2022.159829] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/19/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Frail individuals often face a high medical burden, and household solid fuel use is associated with a range of functional declines or diseases, but evidence on the relationship between household solid fuel and frailty and the resulting medical burden is limited. We aim to investigate the effect of household solid fuel on frailty and further quantify how much of the increased medical burden associated with frailty is attributable to household solid fuel. METHODS The prospective data were from the China Health and Retirement Longitudinal Study, 4685 non-frail participants at baseline were included. Inverse probability weighting was used to balance the covariates between groups. The modified Poisson regression was used to analyze the association of household solid fuel (including baseline and switching across three-wave survey) with frailty, and the generalized linear model was used to analyze the association of frailty with the change in medical burden. Further, the increased medical burden associated with frailty attributable to household solid fuel was quantified. RESULTS Using solid fuel for cooking (RR = 1.29, 95%CI, 1.07-1.57), heating (RR = 1.38, 95%CI, 1.09-1.73), or both (RR = 1.40, 95%CI, 1.05-1.86) had a higher risk of frailty than using clean fuel. In addition, the risk of frailty generally increases with the times of solid fuel use across the three-wave survey. Then, frailty participants had a greater increase in the annual number of hospitalizations (β = 0.11, 95%CI, 0.02-0.19) and annual costs of hospitalizations (β = 2953.35, 95%CI, 1149.87-4756.83) than those non-frailty. Heating coal caused the largest frailty-related increase in the annual number of hospitalizations and annual costs of hospitalizations, with 0.04 and 1195.40, respectively. CONCLUSION The increased medical burden associated with frailty was partly attributable to household solid fuel, which suggested that intervention targeting household solid fuels can delay frailty and thus reduce individual medical burden.
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Affiliation(s)
- Xiaoyu Jin
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Yuling Wang
- Department of Pharmacology, School of Basic Medicine, Anhui Medical University, China
| | - Yudong Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Yunfeng Liang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Yuxuan Li
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Xiaoni Sun
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Shuangshuang Yan
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Lu Mei
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Junwen Tao
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Jian Song
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Rubing Pan
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Weizhuo Yi
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Jian Cheng
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Linsheng Yang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Hong Su
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China.
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Hou Q, Huang J, Zhao L, Pan X, Liao C, Jiang Q, Lei J, Guo F, Cui J, Guo Y, Zhang B. Dietary genistein increases microbiota-derived short chain fatty acid levels, modulates homeostasis of the aging gut, and extends healthspan and lifespan. Pharmacol Res 2023; 188:106676. [PMID: 36693599 DOI: 10.1016/j.phrs.2023.106676] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 01/09/2023] [Accepted: 01/20/2023] [Indexed: 01/22/2023]
Abstract
Age-related gastrointestinal decline contributes to whole-organism frailty and mortality. Genistein is known to have beneficial effects on age-related diseases, but its precise role in homeostasis of the aging gut remains to be elucidated. Here, wild-type aging mice and Zmpste24-/- progeroid mice were used to investigate the role of genistein in lifespan and homeostasis of the aging gut in mammals. A series of longitudinal, clinically relevant measurements were performed to evaluate the effect of genistein on healthspan. It was found that dietary genistein promoted a healthier and longer life and was associated with a decrease in the levels of systemic inflammatory cytokines in aging mice. Furthermore, dietary genistein ameliorated gut dysfunctions, such as intestinal inflammation, leaky gut, and impaired epithelial regeneration. A distinct genistein-mediated alteration in gut microbiota was observed by increasing Lachnospira abundance and short-chain fatty acid (SCFA) production. Further fecal microbiota transplantation and dirty cage sharing experiments indicated that the gut microbiota from genistein-fed mice rejuvenated the aging gut and extended the lifespan of progeroid mice. It was demonstrated that genistein-associated SCFAs alleviated tumor necrosis factor alpha-induced intestinal organoid damage. Moreover, genistein-associated propionate promoted regulatory T cell-derived interleukin 10 production, which alleviated macrophage-derived inflammation. This study provided the first data, to the authors' knowledge, indicating that dietary genistein modulates homeostasis in the aging gut and extends the healthspan and lifespan of aging mammals. Moreover, the existence of a link between genistein and the gut microbiota provides a rationale for dietary interventions against age-associated frailty.
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Affiliation(s)
- Qihang Hou
- State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Jingxi Huang
- State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Lihua Zhao
- State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Xianjie Pan
- State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Chaoyong Liao
- State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Qiuyu Jiang
- State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Jiaqi Lei
- State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Fangshen Guo
- State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Jian Cui
- State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Yuming Guo
- State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing 100193, China
| | - Bingkun Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science & Technology, China Agricultural University, Haidian District, Beijing 100193, China.
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Scott A, Ashwin J, Ellison M, Sinclair D. International Gains to Achieving Healthy Longevity. Cold Spring Harb Perspect Med 2023; 13:cshperspect.a041202. [PMID: 36096548 PMCID: PMC9899644 DOI: 10.1101/cshperspect.a041202] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Utilizing economic tools, we evaluate the gains from improving the relationship between biological and chronological age in dollar terms. We show that the gains to individuals are substantial because targeting aging exploits synergies between health and life expectancy and the complementarities across different diseases. Gains are boosted by improvements in life expectancy and a rising number of older people. We compute the value of slowing aging in a range of countries and estimate that increasing life expectancy by 1 year has an annual benefit of ∼4%-5% of gross domestic product (GDP). Augmenting GDP with these measures of health gains reveals the growing importance of achieving healthy longevity as a means of boosting welfare, with the need being particularly acute in the United States.
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Affiliation(s)
- Andrew Scott
- London Business School and Research Fellow, Centre for Economic Policy Research, Regent's Park, London NW1 4SA, United Kingdom
| | - Julian Ashwin
- London Business School, Regent's Park, London NW1 4SA, United Kingdom
| | - Martin Ellison
- University of Oxford, Nuffield College, NuCamp, CEPR, Oxford OX1 1NF, United Kingdom
| | - David Sinclair
- Department of Genetics, Blavatnik Institute, Boston, Massachusetts 02115, USA
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Grossardt BR, Chamberlain AM, Boyd CM, Bobo WV, St Sauver JL, Rocca WA. Convergence of four measures of multi-morbidity. JOURNAL OF MULTIMORBIDITY AND COMORBIDITY 2023; 13:26335565221150124. [PMID: 36618107 PMCID: PMC9813979 DOI: 10.1177/26335565221150124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/20/2022] [Indexed: 01/04/2023]
Abstract
Objectives To compare the agreement between percentile ranks from 4 multi-morbidity scores. Design Population-based descriptive study. Setting Olmsted County, Minnesota (USA). Participants We used the medical records-linkage system of the Rochester Epidemiology Project (REP; http://www.rochesterproject.org) to identify all residents of Olmsted County, Minnesota who reached one or more birthdays between 1 January 2005 and 31 December 2014 (10 years). Methods For each person, we calculated 4 multi-morbidity scores using readily available diagnostic code lists from the US Department of Health and Human Services, the Clinical Classifications Software, and the Elixhauser Comorbidity Index. We calculated scores using diagnostic codes received in the 5 years before the index birthday and fit quantile regression models across age and separately by sex to transform unweighted, simple counts of conditions into percentile ranks as compared to peers of same age and of same sex. We compared the percentile ranks of the 4 multi-morbidity scores using intra-class correlation coefficients (ICCs). Results We assessed agreement in 181,553 persons who reached a total of 1,075,433 birthdays at ages 18 years through 85 years during the study period. In general, the percentile ranks of the 4 multi-morbidity scores exhibited high levels of agreement in 6 score-to-score pairwise comparisons. The agreement increased with older age for all pairwise comparisons, and ICCs were consistently greater than 0.65 at ages 50 years and older. Conclusions The assignment of percentile ranks may be a simple and intuitive way to assess the underlying trait of multi-morbidity across studies that use different measures.
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Affiliation(s)
- Brandon R. Grossardt
- Division of Clinical Trials and Biostatistics, Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA
| | - Alanna M. Chamberlain
- Division of Epidemiology, Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA,Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
| | - Cynthia M. Boyd
- Division of Geriatric Medicine and Gerontology, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - William V. Bobo
- Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, USA
| | - Jennifer L. St Sauver
- Division of Epidemiology, Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA,The Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, MN, USA
| | - Walter A. Rocca
- Division of Epidemiology, Department of Quantitative Health Sciences, Mayo Clinic, Rochester, MN, USA,Department of Neurology, Mayo Clinic, Rochester, MN, USA,Women’s Health Research Center, Mayo Clinic, Rochester, MN, USA,Walter A. Rocca, MD, MPH, Division of Epidemiology, Department of Quantitative Health Sciences, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
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Jeyakumar N, Hilmer SN, Teixeira-Pinto A, Loy CT. Frailty and Associated Environmental Factors Only Have Small Effects on Age of Onset in Huntington's Disease. J Huntingtons Dis 2023; 12:355-361. [PMID: 38007671 DOI: 10.3233/jhd-230572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2023]
Abstract
BACKGROUND Over one third of age of onset variation in Huntington's disease is unexplained by CAG repeat length. In Alzheimer's disease, frailty partly modulates the relationship between neuropathology and dementia. OBJECTIVE We investigated whether a multi-domain frailty index, reflecting non-genetic factors in Huntington's disease, similarly modulates the relationship between CAG repeat length and age of onset. METHODS We created a frailty index assessing comorbidities, substance abuse, polypharmacy, and education. We applied multiple linear regression models to 2,741 subjects with manifest Huntington's disease from the Enroll-HD cohort study, including 729 subjects with late-onset (post-60 years) disease, using frailty index or constituent item scores and CAG repeat length as independent variables. We used actual and "residual" ages of onset (difference between actual and CAG-based predicted onset) as dependent variables, the latter offsetting the increased time available to accumulate comorbidities in older subjects. RESULTS Higher frailty index scores were associated with significantly lower residual ages of onset in the late-onset subgroup (p = 0.03), though the effect was small (R2 = 0.27 with frailty as a predictor vs. 0.26 without). Number of comorbidities was also associated with significantly lower residual ages of onset in the late-onset subgroup (p = 0.04). Drug abuse and smoking were associated with significantly earlier ages of onset in the whole cohort (p < 0.01, p = 0.02) and late-onset subgroup (p < 0.01, p = 0.03). CONCLUSIONS The impact of non-genetic factors on age of onset, assessed using a frailty index or separately, in Huntington's disease is limited.
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Affiliation(s)
| | - Sarah N Hilmer
- The Kolling Institute, The University of Sydney, Sydney, Australia
| | | | - Clement T Loy
- Macquarie Medical School, Macquarie University, Sydney, Australia
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Hutchins-Wiese H, Argeros G, Walsh SE. Frailty and Nutrition Risk Predict Falls and Emergency Department Visits in Home-Delivered Meal Clients. J Nutr Gerontol Geriatr 2023; 42:1-14. [PMID: 36649214 DOI: 10.1080/21551197.2023.2167030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Home-delivered meal programs improve health outcomes for older adults who are homebound, yet some clients need additional services and support to maintain independence. This study sought to identify program clients at the highest risk for adverse outcomes. Nutrition risk and Frailty Index scores were used to predict client-reported falls, emergency department visits, and hospitalizations over a six-month period for 258 Meals on Wheels clients in one Midwestern community. A multivariate binomial logistic regression model adjusting for both Frailty Index and nutrition risk scores with age, gender, poverty, and race accounted for 13.2% of the variation in falls and 22% of the variation in emergency department visits. Neither study variable was predictive of hospitalizations. Nutrition risk and Frailty Index scores, together, produced a more robust picture of client risk than with either score alone; these tools could be used by service providers to prioritize additional support services.
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Affiliation(s)
| | - Grigoris Argeros
- Department of Sociology, Anthropology, and Criminology, Eastern Michigan University, Ypsilanti, Michigan, USA
| | - Sarah E Walsh
- School of Health Sciences, Eastern Michigan University, Ypsilanti, Michigan, USA
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Kehler DS, Milic J, Guaraldi G, Fulop T, Falutz J. Frailty in older people living with HIV: current status and clinical management. BMC Geriatr 2022; 22:919. [PMID: 36447144 PMCID: PMC9708514 DOI: 10.1186/s12877-022-03477-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 09/23/2022] [Indexed: 12/05/2022] Open
Abstract
This paper will update care providers on the clinical and scientific aspects of frailty which affects an increasing proportion of older people living with HIV (PLWH). The successful use of combination antiretroviral therapy has improved long-term survival in PLWH. This has increased the proportion of PLWH older than 50 to more than 50% of the HIV population. Concurrently, there has been an increase in the premature development of age-related comorbidities as well as geriatric syndromes, especially frailty, which affects an important minority of older PLWH. As the number of frail older PLWH increases, this will have an important impact on their health care delivery. Frailty negatively affects a PLWH's clinical status, and increases their risk of adverse outcomes, impacting quality of life and health-span. The biologic constructs underlying the development of frailty integrate interrelated pathways which are affected by the process of aging and those factors which accelerate aging. The negative impact of sarcopenia in maintaining musculoskeletal integrity and thereby functional status may represent a bidirectional interaction with frailty in PLWH. Furthermore, there is a growing body of literature that frailty states may be transitional. The recognition and management of related risk factors will help to mitigate the development of frailty. The application of interdisciplinary geriatric management principles to the care of older PLWH allows reliable screening and care practices for frailty. Insight into frailty, increasingly recognized as an important marker of biologic age, will help to understand the diversity of clinical status occurring in PLWH, which therefore represents a fundamentally new and important aspect to be evaluated in their health care.
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Affiliation(s)
- D. Scott Kehler
- grid.55602.340000 0004 1936 8200Division of Geriatric Medicine, Department of Medicine, Dalhousie University, Halifax, NS Canada ,grid.55602.340000 0004 1936 8200School of Physiotherapy, Faculty of Health, Dalhousie University, Room 402 Forrest Building 5869 University Ave, B3H 4R2, PO Box 15000 Halifax, NS Canada
| | - Jovana Milic
- grid.7548.e0000000121697570Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Giovanni Guaraldi
- grid.7548.e0000000121697570Department of Surgical, Medical, Dental and Morphological Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Tamas Fulop
- grid.86715.3d0000 0000 9064 6198Department of Medicine, Geriatric Division, Research Center On Aging, Université de Sherbrooke, Sherbrooke, QC Canada
| | - Julian Falutz
- grid.63984.300000 0000 9064 4811Division of Geriatric Medicine, Division of Infectious Diseases, Comprehensive HIV Aging Initiative, McGill University Health Center, Montreal, QC Canada
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Farrell S, Kane AE, Bisset E, Howlett SE, Rutenberg AD. Measurements of damage and repair of binary health attributes in aging mice and humans reveal that robustness and resilience decrease with age, operate over broad timescales, and are affected differently by interventions. eLife 2022; 11:e77632. [PMID: 36409200 PMCID: PMC9725749 DOI: 10.7554/elife.77632] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 11/20/2022] [Indexed: 11/23/2022] Open
Abstract
As an organism ages, its health-state is determined by a balance between the processes of damage and repair. Measuring these processes requires longitudinal data. We extract damage and repair transition rates from repeated observations of binary health attributes in mice and humans to explore robustness and resilience, which respectively represent resisting or recovering from damage. We assess differences in robustness and resilience using changes in damage rates and repair rates of binary health attributes. We find a conserved decline with age in robustness and resilience in mice and humans, implying that both contribute to worsening aging health - as assessed by the frailty index (FI). A decline in robustness, however, has a greater effect than a decline in resilience on the accelerated increase of the FI with age, and a greater association with reduced survival. We also find that deficits are damaged and repaired over a wide range of timescales ranging from the shortest measurement scales toward organismal lifetime timescales. We explore the effect of systemic interventions that have been shown to improve health, including the angiotensin-converting enzyme inhibitor enalapril and voluntary exercise for mice. We have also explored the correlations with household wealth for humans. We find that these interventions and factors affect both damage and repair rates, and hence robustness and resilience, in age and sex-dependent manners.
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Affiliation(s)
| | - Alice E Kane
- Blavatnik Institute, Department of Genetics, Paul F. Glenn Center for Biology of Aging Research at Harvard Medical SchoolBostonUnited States
| | - Elise Bisset
- Department of Pharmacology, Dalhousie UniversityHalifaxCanada
| | - Susan E Howlett
- Department of Pharmacology, Dalhousie UniversityHalifaxCanada
- Department of Medicine (GeriatricMedicine), Dalhousie UniversityHalifaxCanada
| | - Andrew D Rutenberg
- Department of Physics and Atmospheric Science, Dalhousie UniversityHalifaxCanada
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Abstract
OBJECTIVE We aimed to evaluate the prevalence, clinical determinants, and consequences (falls and hospitalization) of frailty in older adults with mental illness. DESIGN Retrospective clinical cohort study. SETTING We collected the data in a specialized psychogeriatric ward, in Boston, USA, between July 2018 and June 2019. PARTICIPANTS Two hundred and fourty-four inpatients aged 65 years old and over. MEASUREMENTS Psychiatric diagnosis was based on a multi-professional consensus meeting according to DSM-5 criteria. Frailty was assessed according to two common instruments, that is, the FRAIL questionnaire and the deficit accumulation model (aka Frailty Index [FI]). Multiple linear regression analyses were conducted to evaluate the association between frailty and sample demographics (age, female sex, and non-Caucasian ethnicity) and clinical characteristics (dementia, number of clinical diseases, current infection, number of psychotropic, and non-psychotropic medications in use). Multiple regression between frailty assessments and either falls or number of hospital admissions in the last 6 and 12 months, respectively, were analyzed and adjusted for covariates. RESULTS Prevalence of frailty was high, that is, 83.6% according to the FI and 55.3% according to the FRAIL questionnaire. Age, the number of clinical (somatic) diseases, and the number of non-psychotropic medications were independently associated with frailty identified by the FRAIL. Dementia, current infection, the number of clinical (somatic) diseases, and the number of non-psychotropic medications were independently associated with frailty according to the FI. Falls were significantly associated with both frailty instruments. However, we found only a significant association for the number of hospital admissions with the FI. CONCLUSION Frailty is highly prevalent among geriatric psychiatry inpatients. The FRAIL questionnaire and the FI may capture different forms of frailty dimensions, being the former probably more associated with the phenotype model and the latter more associated with multimorbidity.
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The Additional Economic Burden of Frailty in Adult Cervical Deformity Patients Undergoing Surgical Intervention. Spine (Phila Pa 1976) 2022; 47:1418-1425. [PMID: 35797658 DOI: 10.1097/brs.0000000000004407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 03/03/2022] [Indexed: 02/01/2023]
Abstract
SUMMARY OF BACKGROUND DATA The influence of frailty on economic burden following corrective surgery for the adult cervical deformity (CD) is understudied and may provide valuable insights for preoperative planning. OBJECTIVE To assess the influence of baseline frailty status on the economic burden of CD surgery. STUDY DESIGN Retrospective cohort. MATERIALS AND METHODS CD patients with frailty scores and baseline and two-year Neck Disability Index data were included. Frailty score was categorized patients by modified CD frailty index into not frail (NF) and frail (F). Analysis of covariance was used to estimate marginal means adjusting for age, sex, surgical approach, and baseline sacral slope, T1 slope minus cervical lordosis, C2-C7 angle, C2-C7 sagittal vertical axis. Costs were derived from PearlDiver registry data. Reimbursement consisted of a standardized estimate using regression analysis of Medicare payscales for services within a 30-day window including length of stay and death. This data is representative of the national average Medicare cost differentiated by complication/comorbidity outcome, surgical approach, and revision status. Cost per quality-adjusted life-year (QALY) at two years was calculated for NF and F patients. RESULTS There were 126 patients included. There were 68 NF patients and 58 classified as F. Frailty groups did not differ by overall complications, instance of distal junctional kyphosis, or reoperations (all P >0.05). These groups had similar rates of radiographic and clinical improvement by two years. NF and F had similar overall cost ($36,731.03 vs. $37,356.75, P =0.793), resulting in equivocal costs per QALYs for both patients at two years ($90,113.79 vs. $80,866.66, P =0.097). CONCLUSION F and NF patients experienced similar complication rates and upfront costs, with equivocal utility gained, leading to comparative cost-effectiveness with NF patients based on cost per QALYs at two years. Surgical correction for CD is an economical healthcare investment for F patients when accounting for anticipated utility gained and cost-effectiveness following the procedure. LEVEL OF EVIDENCE III.
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Larson PJ, Zhou W, Santiago A, Driscoll S, Fleming E, Voigt AY, Chun OK, Grady JJ, Kuchel GA, Robison JT, Oh J. Associations of the skin, oral and gut microbiome with aging, frailty and infection risk reservoirs in older adults. NATURE AGING 2022; 2:941-955. [PMID: 36398033 PMCID: PMC9667708 DOI: 10.1038/s43587-022-00287-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 08/30/2022] [Indexed: 01/25/2023]
Abstract
Older adults represent a vulnerable population with elevated risk for numerous morbidities. To explore the association of the microbiome with aging and age-related susceptibilities including frailty and infectious disease risk, we conducted a longitudinal study of the skin, oral, and gut microbiota in 47 community- or skilled nursing facility-dwelling older adults vs. younger adults. We found that microbiome changes were not associated with chronological age so much as frailty: we identified prominent changes in microbiome features associated with susceptibility to pathogen colonization and disease risk, including diversity, stability, heterogeneity, and biogeographic determinism, which were moreover associated with a loss of Cutibacterium (C.) acnes in the skin microbiome. Strikingly, the skin microbiota were also the primary reservoir for antimicrobial resistance, clinically important pathobionts, and nosocomial strains, suggesting a potential role particularly for the skin microbiome in disease risk and dissemination of multidrug resistant pathogens.
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Affiliation(s)
- Peter J. Larson
- UCONN Health (University of Connecticut), Farmington, CT
- The Jackson Laboratory, Farmington, CT
| | - Wei Zhou
- The Jackson Laboratory, Farmington, CT
| | - Alba Santiago
- UCONN Health (University of Connecticut), Farmington, CT
| | - Sarah Driscoll
- UCONN Health (University of Connecticut), Farmington, CT
| | | | | | | | - James J. Grady
- UCONN Health (University of Connecticut), Farmington, CT
| | | | | | - Julia Oh
- The Jackson Laboratory, Farmington, CT
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Sosnowski DK, Jamieson KL, Gruzdev A, Li Y, Valencia R, Yousef A, Kassiri Z, Zeldin DC, Seubert JM. Cardiomyocyte-specific disruption of soluble epoxide hydrolase limits inflammation to preserve cardiac function. Am J Physiol Heart Circ Physiol 2022; 323:H670-H687. [PMID: 35985007 PMCID: PMC9512117 DOI: 10.1152/ajpheart.00217.2022] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 11/22/2022]
Abstract
Endotoxemia elicits a multiorgan inflammatory response that results in cardiac dysfunction and often leads to death. Inflammation-induced metabolism of endogenous N-3 and N-6 polyunsaturated fatty acids generates numerous lipid mediators, such as epoxy fatty acids (EpFAs), which protect the heart. However, EpFAs are hydrolyzed by soluble epoxide hydrolase (sEH), which attenuates their cardioprotective actions. Global genetic disruption of sEH preserves EpFA levels and attenuates cardiac dysfunction in mice following acute lipopolysaccharide (LPS)-induced inflammatory injury. In leukocytes, EpFAs modulate the innate immune system through the NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome. However, the mechanisms by which both EpFAs and sEH inhibition exert their protective effects in the cardiomyocyte are still elusive. This study investigated whether cardiomyocyte-specific sEH disruption attenuates inflammation and cardiac dysfunction in acute LPS inflammatory injury via modulation of the NLRP3 inflammasome. We use tamoxifen-inducible CreER recombinase technology to target sEH genetic disruption to the cardiomyocyte. Primary cardiomyocyte studies provide mechanistic insight into inflammasome signaling. For the first time, we demonstrate that cardiomyocyte-specific sEH disruption preserves cardiac function and attenuates inflammatory responses by limiting local cardiac inflammation and activation of the systemic immune response. Mechanistically, inhibition of cardiomyocyte-specific sEH activity or exogenous EpFA treatment do not prevent upregulation of NLRP3 inflammasome machinery in neonatal rat cardiomyocytes. Rather, they limit downstream activation of the pathway leading to release of fewer chemoattractant factors and recruitment of immune cells to the heart. These data emphasize that cardiomyocyte sEH is vital for mediating detrimental systemic inflammation.NEW & NOTEWORTHY The cardioprotective effects of genetic disruption and pharmacological inhibition of sEH have been demonstrated in a variety of cardiac disease models, including acute LPS inflammatory injury. For the first time, it has been demonstrated that sEH genetic disruption limited to the cardiomyocyte profoundly preserves cardiac function and limits local and systemic inflammation following acute LPS exposure. Hence, cardiomyocytes serve a critical role in the innate immune response that can be modulated to protect the heart.
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Affiliation(s)
- Deanna K Sosnowski
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - K Lockhart Jamieson
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Artiom Gruzdev
- National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | - Yingxi Li
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Robert Valencia
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Ala Yousef
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Zamaneh Kassiri
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
- Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
| | - Darryl C Zeldin
- National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | - John M Seubert
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
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Shindyapina AV, Cho Y, Kaya A, Tyshkovskiy A, Castro JP, Deik A, Gordevicius J, Poganik JR, Clish CB, Horvath S, Peshkin L, Gladyshev VN. Rapamycin treatment during development extends life span and health span of male mice and Daphnia magna. SCIENCE ADVANCES 2022; 8:eabo5482. [PMID: 36112674 PMCID: PMC9481125 DOI: 10.1126/sciadv.abo5482] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 07/26/2022] [Indexed: 05/22/2023]
Abstract
Development is tightly connected to aging, but whether pharmacologically targeting development can extend life remains unknown. Here, we subjected genetically diverse UMHET3 mice to rapamycin for the first 45 days of life. The mice grew slower and remained smaller than controls for their entire lives. Their reproductive age was delayed without affecting offspring numbers. The treatment was sufficient to extend the median life span by 10%, with the strongest effect in males, and helped to preserve health as measured by frailty index scores, gait speed, and glucose and insulin tolerance tests. Mechanistically, the liver transcriptome and epigenome of treated mice were younger at the completion of treatment. Analogous to mice, rapamycin exposure during development robustly extended the life span of Daphnia magna and reduced its body size. Overall, the results demonstrate that short-term rapamycin treatment during development is a novel longevity intervention that acts by slowing down development and aging, suggesting that aging may be targeted already early in life.
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Affiliation(s)
| | - Yongmin Cho
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Alaattin Kaya
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284, USA
| | - Alexander Tyshkovskiy
- Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
- Belozersky Institute of Physico-Chemical Biology, Moscow State University, Moscow 119234, Russia
| | - José P. Castro
- Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Amy Deik
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | | | - Jesse R. Poganik
- Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Clary B. Clish
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Steve Horvath
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Leonid Peshkin
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA
- Eugene Bell Center for Regenerative Biology and Tissue Engineering and National Xenopus Resource, Marine Biological Laboratory, Woods Hole, MA 02543, USA
| | - Vadim N. Gladyshev
- Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
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Passias PG, Kummer N, Williamson TK, Moattari K, Lafage V, Lafage R, Kim HJ, Daniels AH, Gum JL, Diebo BG, Protopsaltis TS, Mundis GM, Eastlack RK, Soroceanu A, Scheer JK, Hamilton DK, Klineberg EO, Line B, Hart RA, Burton DC, Mummaneni P, Chou D, Park P, Schwab FJ, Shaffrey CI, Bess S, Ames CP, Smith JS. Highest Achievable Outcomes for Patients Undergoing Cervical Deformity Corrective Surgery by Frailty. Neurosurgery 2022; 91:693-700. [PMID: 36084195 DOI: 10.1227/neu.0000000000002091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 05/26/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Frailty is influential in determining operative outcomes, including complications, in patients with cervical deformity (CD). OBJECTIVE To assess whether frailty status limits the highest achievable outcomes of patients with CD. METHODS Adult patients with CD with 2-year (2Y) data included. Frailty stratification: not frail (NF) <0.2, frail (F) 0.2 to 0.4, and severely frail (SF) >0.4. Analysis of covariance established estimated marginal means based on age, invasiveness, and baseline deformity, for improvement, deterioration, or maintenance in Neck Disability Index (NDI), Modified Japanese Orthopaedic Association (mJOA), and Numerical Rating Scale Neck Pain. RESULTS One hundred twenty-six patients with CD included 29 NF, 83 F, and 14 SF. The NF group had the highest rates of deterioration and lowest rates of improvement in cervical Sagittal Vertical Axis and horizontal gaze modifiers. Two-year improvements in NDI by frailty: NF: -11.2, F: -16.9, and SF: -14.6 (P = .524). The top quartile of NF patients also had the lowest 1-year (1Y) NDI (7.0) compared with F (11.0) and SF (40.5). Between 1Y and 2Y, 7.9% of patients deteriorated in NDI, 71.1% maintained, and 21.1% improved. Between 1Y and 2Y, SF had the highest rate of improvement (42%), while NF had the highest rate of deterioration (18.5%). CONCLUSION Although frail patients improved more often by 1Y, SF patients achieve most of their clinical improvement between 1 and 2Y. Frailty is associated with factors such as osteoporosis, poor alignment, neurological status, sarcopenia, and other medical comorbidities. Similarly, clinical outcomes can be affected by many factors (fusion status, number of pain generators within treated levels, integrity of soft tissues and bone, and deformity correction). Although accounting for such factors will ultimately determine whether frailty alone is an independent risk factor, these preliminary findings may suggest that frailty status affects the clinical outcomes and improvement after CD surgery.
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Affiliation(s)
- Peter G Passias
- Department of Orthopedic and Neurosurgery, NYU Langone Orthopedic Hospital, New York Spine Institute, New York, New York, USA
| | - Nicholas Kummer
- Department of Orthopedic and Neurosurgery, NYU Langone Orthopedic Hospital, New York Spine Institute, New York, New York, USA
| | - Tyler K Williamson
- Department of Orthopedic and Neurosurgery, NYU Langone Orthopedic Hospital, New York Spine Institute, New York, New York, USA
| | - Kevin Moattari
- Department of Orthopedic and Neurosurgery, NYU Langone Orthopedic Hospital, New York Spine Institute, New York, New York, USA
| | - Virginie Lafage
- Department of Orthopedics, Lenox Hill Hospital, Northwell Health, New York, New York, USA
| | - Renaud Lafage
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York, USA
| | - Han Jo Kim
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, New York, USA
| | - Alan H Daniels
- Department of Orthopaedic Surgery, Warren Alpert Medical School of Brown University/Rhode Island Hospital, Providence, Rhode Island, USA
| | - Jeffrey L Gum
- Norton Leatherman Spine Center, Louisville, Kentucky, USA
| | - Bassel G Diebo
- Department of Orthopaedic Surgery, SUNY Downstate Medical Center, Brooklyn, New York, USA
| | - Themistocles S Protopsaltis
- Department of Orthopaedic Surgery, NYU Langone Orthopaedic Hospital, NYU Langone Health, New York, New York, USA
| | - Gregory M Mundis
- Division of Orthopaedic Surgery, Scripps Clinic Medical Group, La Jolla, California, USA
| | - Robert K Eastlack
- Department of Orthopaedic Surgery, Scripps Clinic, San Diego, California, USA
| | - Alexandra Soroceanu
- Department of Orthopaedic Surgery, University of Calgary, Calgary, Alberta, Canada
| | - Justin K Scheer
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA
| | - D Kojo Hamilton
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Eric O Klineberg
- Department of Orthopaedic Surgery, UC Davis Health System, Sacramento, California, USA
| | - Breton Line
- Department of Spine Surgery, Denver International Spine Center, Presbyterian St. Luke's Medical Center/Rocky Mountain Hospital for Children, Denver, Colorado, USA
| | - Robert A Hart
- Department of Orthopaedic Surgery, Swedish Neuroscience Institute, Seattle, Washington, USA
| | - Douglas C Burton
- Department of Orthopaedic Surgery, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Praveen Mummaneni
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA
| | - Dean Chou
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA
| | - Paul Park
- Department of Neurosurgery, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Frank J Schwab
- Department of Orthopedics, Lenox Hill Hospital, Northwell Health, New York, New York, USA
| | - Christopher I Shaffrey
- Division of Spine, Departments of Neurosurgery and Orthopaedic Surgery, Duke University, Durham, North Carolina, USA
| | - Shay Bess
- Department of Spine Surgery, Denver International Spine Center, Presbyterian St. Luke's Medical Center/Rocky Mountain Hospital for Children, Denver, Colorado, USA
| | - Christopher P Ames
- Department of Neurological Surgery, University of California, San Francisco, San Francisco, California, USA
| | - Justin S Smith
- Department of Orthopaedic Surgery, University of Virginia, Charlottesville, Virginia, USA
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49
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Hession LE, Sabnis GS, Churchill GA, Kumar V. A machine-vision-based frailty index for mice. NATURE AGING 2022; 2:756-766. [PMID: 37091193 PMCID: PMC10117690 DOI: 10.1038/s43587-022-00266-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 07/05/2022] [Indexed: 11/08/2022]
Abstract
Heterogeneity in biological aging manifests itself in health status and mortality. Frailty indices (FIs) capture health status in humans and model organisms. To accelerate our understanding of biological aging and carry out scalable interventional studies, high-throughput approaches are necessary. Here we introduce a machine-learning-based visual FI for mice that operates on video data from an open-field assay. We use machine vision to extract morphometric, gait and other behavioral features that correlate with FI score and age. We use these features to train a regression model that accurately predicts the normalized FI score within 0.04 ± 0.002 (mean absolute error). Unnormalized, this error is 1.08 ± 0.05, which is comparable to one FI item being mis-scored by 1 point or two FI items mis-scored by 0.5 points. This visual FI provides increased reproducibility and scalability that will enable large-scale mechanistic and interventional studies of aging in mice.
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Affiliation(s)
- Leinani E. Hession
- The Jackson Laboratory, Bar Harbor, ME, USA
- These authors contributed equally: Leinani E. Hession, Gautam S. Sabnis
| | - Gautam S. Sabnis
- The Jackson Laboratory, Bar Harbor, ME, USA
- These authors contributed equally: Leinani E. Hession, Gautam S. Sabnis
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50
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Is frailty responsive to surgical correction of adult spinal deformity? An investigation of sagittal re-alignment and frailty component drivers of postoperative frailty status. Spine Deform 2022; 10:901-911. [PMID: 35262879 DOI: 10.1007/s43390-022-00476-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 01/15/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Frailty has been associated with adverse postoperative outcomes. Recently, a novel frailty index for preoperative risk stratification in patients with adult spinal deformity was developed. Components of the ASD-FI utilize patient comorbidity, clinical symptoms, and patient-reported-outcome-measures (PROMS). Our purpose was to investigate components of the Adult Spinal Deformity Frailty Index (ASD-FI) responsive to surgery and drivers of overall frailty. METHODS Operative ASD patients ≥ 18 years, undergoing multilevel fusions, with complete baseline, 6 W, 1Y and 2Y ASD-FI scores. Descriptive analysis assessed demographics, radiographic parameters, and surgical details. Pearson bivariate correlations, independent and paired t tests assessed postoperative changes to ASD-FI components, total score, and radiographic parameters. Linear regression models determined the effect of successful surgery (achieving lowest level SRS-Schwab classification modifiers) on change in ASD-FI total scores. RESULTS 409 6-week, 696 1-year, and 253 2-year operative ASD patients were included. 6-week and 1-year baseline frailty scores were 0.34, 2 years was 0.38. Following surgery, 6-week frailty was 0.36 (p = 0.033), 1 year was 0.25 (p < 0.001), and 2 years was 0.28 (p < 0.001). Of the ASD-FI variables, 17/40 improved at 6 weeks, 21/40 at 1 year, and 18/40 at 2 years. Successful surgery significantly predicted decreases in 1-year frailty scores (R = 0.27, p < 0.001), SRS-Schwab SVA modifier was the greatest predictor (Adjusted Beta: - 0.29, p < 0.001). CONCLUSIONS Improvement in sagittal realignment and functional status correlated with improved postoperative frailty. Additional research and deformity sub-group analyses are needed to describe associations between specific functional activities that correlated with frailty improvement as well as evaluation of modifiable and non-modifiable indices.
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