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Jiang N, Cheng CJ, Liu Q, Strong R, Gelfond J, Nelson JF. Deciphering the Timing and Impact of Life-extending Drugs: A Novel Analytic Approach that Differentiates Early, Midlife, and Senescence Phase Efficacies. bioRxiv 2024:2024.03.27.585737. [PMID: 38586027 PMCID: PMC10996648 DOI: 10.1101/2024.03.27.585737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Evidence that life-extending interventions are not uniformly effective across the lifespan calls for an analytic tool that can estimate age-specific treatment effects on mortality hazards. Here we report such a tool, applying it to mouse data from 42 agents tested in the NIA Interventions Testing Program. This tool identified agents that either reduced (22) or increased (16) mortality hazards or did both (6), all with marked variation in the duration of efficacy and magnitude of effect size. Only 7 reduced mortality hazards after the 90% mortality, when the burden of senescence is greatest. Sex differences were apparent in all parameters. This new analytic tool complements the commonly used log-rank test. It detects more potential life-extending candidates (22 versus 10) and indicates when during the life course they are effective. It also uncovers adverse effects. Most importantly, it identifies agents that specifically reduce mortality hazards during the senescent phase of life.
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Affiliation(s)
- Nisi Jiang
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Cellular and Integrative Physiology, UT Health San Antonio; San Antonio, TX, U.S.A
| | - Catherine J. Cheng
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Cellular and Integrative Physiology, UT Health San Antonio; San Antonio, TX, U.S.A
| | - Qianqian Liu
- Department of Population Health Sciences, UT Health San Antonio; San Antonio, TX, U.S.A
| | - Randy Strong
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Pharmacology, UT Health San Antonio; San Antonio, TX, U.S.A
- South Texas Veterans Health Care System, San Antonio, TX, U.S.A
| | - Jonathan Gelfond
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Population Health Sciences, UT Health San Antonio; San Antonio, TX, U.S.A
| | - James F. Nelson
- The Sam and Ann Barshop Institute for Longevity and Aging Studies, UT Health San Antonio; San Antonio, TX, U.S.A
- Department of Cellular and Integrative Physiology, UT Health San Antonio; San Antonio, TX, U.S.A
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Fung E, Ng KH, Kwok T, Lui LT, Palaniswamy S, Chan Q, Lim LL, Wiklund P, Xie S, Turner C, Elshorbagy AK, Refsum H, Leung JCS, Kong APS, Chan JCN, Järvelin MR, Woo J. Divergent Survival Outcomes Associated with Elevated Branched-Chain Amino Acid Levels among Older Adults with or without Hypertension and Diabetes: A Validated, Prospective, Longitudinal Follow-Up Study. Biomolecules 2023; 13:1252. [PMID: 37627317 PMCID: PMC10452866 DOI: 10.3390/biom13081252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023] Open
Abstract
Branched-chain amino acids are critical metabolic intermediates that can indicate increased risk of cardiometabolic disease when levels are elevated or, alternatively, suggest sufficient mitochondrial energy metabolism and reserve in old age. The interpretation of BCAA levels can be context-dependent, and it remains unclear whether abnormal levels can inform prognosis. This prospective longitudinal study aimed to determine the interrelationship between mortality hazard and fasting serum BCAA levels among older men and women aged ≥65 years with or without hypertension and diabetes mellitus. At baseline (0Y), fasting serum BCAA concentration in 2997 community-living older men and women were measured. Approximately 14 years later (14Y), 860 study participants returned for repeat measurements. Deaths were analysed and classified into cardiovascular and non-cardiovascular causes using International Classification of Diseases codes. Survival analysis and multivariable Cox regression were performed. During a median follow-up of 17Y, 971 (78.6%) non-cardiovascular and 263 (21.4%) cardiovascular deaths occurred among 1235 (41.2%) deceased (median age, 85.8 years [IQR 81.7-89.7]). From 0Y to 14Y, BCAA levels declined in both sexes, whereas serum creatinine concentration increased (both p < 0.0001). In older adults without hypertension or diabetes mellitus, the relationship between mortality hazard and BCAA level was linear and above-median BCAA levels were associated with improved survival, whereas in the presence of cardiometabolic disease the relationship was U-shaped. Overall, adjusted Cox regression determined that each 10% increment in BCAA concentration was associated with a 7% (p = 0.0002) and 16% (p = 0.0057) reduction in mortality hazard estimated at 0Y and 14Y, respectively. Our findings suggested that abnormally high or low (dyshomeostatic) BCAA levels among older adults with hypertension and/or diabetes mellitus were associated with increased mortality, whereas in those with neither disease, increased BCAA levels was associated with improved survival, particularly in the oldest-old.
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Affiliation(s)
- Erik Fung
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Gerald Choa Cardiac Research Centre and Laboratory for Heart Failure + Circulation Research, Li Ka Shing Institute of Health Sciences, Prince of Wales Hospital, Hong Kong SAR, China
- Neural, Vascular, Metabolic Biology Programme, and Ministry of Education Key Laboratory for Regenerative Medicine, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
- Division of Cardiology, Department of Medicine, School of Medicine, The Chinese University of Hong Kong, Shenzhen 518172, China
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London W2 1PG, UK
| | - Kwan Hung Ng
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Gerald Choa Cardiac Research Centre and Laboratory for Heart Failure + Circulation Research, Li Ka Shing Institute of Health Sciences, Prince of Wales Hospital, Hong Kong SAR, China
| | - Timothy Kwok
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- CUHK Jockey Club Centre for Osteoporosis Care and Control, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Leong-Ting Lui
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Gerald Choa Cardiac Research Centre and Laboratory for Heart Failure + Circulation Research, Li Ka Shing Institute of Health Sciences, Prince of Wales Hospital, Hong Kong SAR, China
| | - Saranya Palaniswamy
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London W2 1PG, UK
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, 90014 Oulu, Finland
| | - Queenie Chan
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London W2 1PG, UK
| | - Lee-Ling Lim
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
- Asia Diabetes Foundation, Shatin, Hong Kong SAR, China
| | - Petri Wiklund
- Faculty of Sport and Health Sciences, University of Jyväskylä, 40014 Jyväskylä, Finland
- The Exercise Translational Medicine Center and Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Suyi Xie
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Gerald Choa Cardiac Research Centre and Laboratory for Heart Failure + Circulation Research, Li Ka Shing Institute of Health Sciences, Prince of Wales Hospital, Hong Kong SAR, China
| | - Cheryl Turner
- Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK
| | - Amany K. Elshorbagy
- Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK
- Department of Physiology, Faculty of Medicine, University of Alexandria, Alexandria 21526, Egypt
- Department of Public Health and Primary Healthcare, School of Public Health, Imperial College London, London W2 1PG, UK
| | - Helga Refsum
- Department of Pharmacology, University of Oxford, Oxford OX1 3QT, UK
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, 0372 Oslo, Norway
| | - Jason C. S. Leung
- CUHK Jockey Club Centre for Osteoporosis Care and Control, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Alice P. S. Kong
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Asia Diabetes Foundation, Shatin, Hong Kong SAR, China
- Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Juliana C. N. Chan
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- Asia Diabetes Foundation, Shatin, Hong Kong SAR, China
- Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, Hong Kong SAR, China
- Li Ka Shing Institute of Health Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Marjo-Riitta Järvelin
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London W2 1PG, UK
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, 90014 Oulu, Finland
- Department of Life Sciences, College of Health and Life Sciences, Brunel University London, Kingston Lane, Uxbridge UB8 3PH, UK
- Unit of Primary Health Care, Oulu University Hospital, 90014 Oulu, Finland
| | - Jean Woo
- Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong SAR, China
- CUHK Jockey Club Institute of Ageing, The Chinese University of Hong Kong, Hong Kong SAR, China
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Nagayasu M, Morishima T, Fujii M, Kudo H, Sobue T, Ohno Y, Miyashiro I. Age-Dependent Causes of Death among Patients with Breast Cancer Based on Osaka Cancer Registry and Vital Statistics in Japan. Healthcare (Basel) 2023; 11:healthcare11101409. [PMID: 37239701 DOI: 10.3390/healthcare11101409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
We aimed to clarify the differences in causes of death among patients with breast cancer according to age at diagnosis and years elapsed since diagnosis. Using data from the Osaka Cancer Registry and Vital Statistics databases, 40,690 female patients diagnosed with primary breast cancer between 1985 and 2006 were included in this study. The statistics on all deaths between 1985 to 2016 were collected, and the observation period was 10 years (2006-2016). Mortality hazards according to age at diagnosis and years elapsed since diagnosis were estimated using a flexible parametric estimation. Of the 40,690 patients, 13,676 (34%) died from all-cause death, and the 10-year survival rate was 65.74% (95% confidence interval: 65.28-66.21). The proportions of deaths were 10,531 (77%) from breast cancer, 1048 (8%) from other cancers, and 2097 (15%) from non-cancer causes. The mortality hazard for deaths from breast cancer was initially high and then declined, whereas that for deaths from other cancers and non-cancer causes was initially low and then increased. The more likely causes of death 5 years after breast cancer diagnosis were other cancers or non-cancer causes among patients aged ≥70 years.
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Affiliation(s)
- Mayumi Nagayasu
- Division of Health Sciences, Graduate School of Medicine, Osaka University, 1-7 Yamadaoka, Suita 5650871, Japan
- Department of Nursing, Hyogo Medical University, 1-3-6 Minatojima, Kobe 6508530, Japan
| | - Toshitaka Morishima
- Cancer Control Center, Osaka International Cancer Institute, 3-1-69 Otemae, Osaka 5418567, Japan
| | - Makoto Fujii
- Division of Health Sciences, Graduate School of Medicine, Osaka University, 1-7 Yamadaoka, Suita 5650871, Japan
| | - Haruka Kudo
- Division of Health Sciences, Graduate School of Medicine, Osaka University, 1-7 Yamadaoka, Suita 5650871, Japan
- Cancer Control Center, Osaka International Cancer Institute, 3-1-69 Otemae, Osaka 5418567, Japan
| | - Tomotaka Sobue
- Division of Environmental Medicine and Population Sciences, Department of Social and Environmental Medicine, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita 5650871, Japan
- Institute for Cancer Control, National Cancer Center Japan, 5-1-1 Tsukiji, Tokyo 1040045, Japan
| | - Yuko Ohno
- Division of Health Sciences, Graduate School of Medicine, Osaka University, 1-7 Yamadaoka, Suita 5650871, Japan
| | - Isao Miyashiro
- Cancer Control Center, Osaka International Cancer Institute, 3-1-69 Otemae, Osaka 5418567, Japan
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Landes J, Henry P, Hardy I, Perret M, Pavard S. Female reproduction bears no survival cost in captivity for gray mouse lemurs. Ecol Evol 2019; 9:6189-6198. [PMID: 31236213 PMCID: PMC6580269 DOI: 10.1002/ece3.5124] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 02/19/2019] [Accepted: 02/22/2019] [Indexed: 12/24/2022] Open
Abstract
The survival cost of reproduction has been revealed in many free-ranging vertebrates. However, recent studies on captive populations failed to detect this cost. Theoretically, this lack of survival/reproduction trade-off is expected when resources are not limiting, but these studies may have failed to detect the cost, as they may not have fully accounted for potential confounding effects, in particular interindividual heterogeneity. Here, we investigated the effects of current and past reproductive effort on later survival in captive females of a small primate, the gray mouse lemur. Survival analyses showed no cost of reproduction in females; and the pattern was even in the opposite direction: the higher the reproductive effort, the higher the chances of survival until the next reproductive event. These conclusions hold even while accounting for interindividual heterogeneity. In agreement with aforementioned studies on captive vertebrates, these results remind us that reproduction is expected to be traded against body maintenance and the survival prospect only when resources are so limiting that they induce an allocation trade-off. Thus, the cost of reproduction has a major extrinsic component driven by environmental conditions.
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Affiliation(s)
- Julie Landes
- Eco‐Anthropologie, UMR 7206CNRS, MNHN, Univ. Paris DiderotParisFrance
- Mécanismes Adaptatifs et Evolution (MECADEV ‐ UMR 7179)CNRS, MNHNBrunoyFrance
- Département de Biologie, Faculté des SciencesUniversité de SherbrookeSherbrookeQuébecCanada
| | - Pierre‐Yves Henry
- Mécanismes Adaptatifs et Evolution (MECADEV ‐ UMR 7179)CNRS, MNHNBrunoyFrance
| | - Isabelle Hardy
- Mécanismes Adaptatifs et Evolution (MECADEV ‐ UMR 7179)CNRS, MNHNBrunoyFrance
| | - Martine Perret
- Mécanismes Adaptatifs et Evolution (MECADEV ‐ UMR 7179)CNRS, MNHNBrunoyFrance
| | - Samuel Pavard
- Eco‐Anthropologie, UMR 7206CNRS, MNHN, Univ. Paris DiderotParisFrance
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