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Rimmer L, Mann DA, Sayer AA, Amarnath S, Granic A. A silver bullet for ageing medicine?: clinical relevance of T-cell checkpoint receptors in normal human ageing. Front Immunol 2024; 15:1360141. [PMID: 38361938 PMCID: PMC10867193 DOI: 10.3389/fimmu.2024.1360141] [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: 12/22/2023] [Accepted: 01/18/2024] [Indexed: 02/17/2024] Open
Abstract
Immunosenescence describes dysregulation of the immune system with ageing manifested in both the innate and adaptive immunity, including changes in T-cell checkpoint signaling. Through complex and nuanced process, T-cells lose excitatory signaling pathways and upregulate their inhibitory signaling, leading to ineffective immune responses that contribute to the formation of the ageing phenotype. Here we expand on the expression, function, and clinical potential of targeting the T-cell checkpoint signaling in age and highlight interventions offering the most benefits to older adults' health. Notably, modifications in vaccination such as with mTOR inhibitors show immediate clinical relevance and good tolerability. Other proposed treatments, including therapies with monoclonal antibodies fail to show clinical efficacy or tolerability needed for implementation at present. Although T-cell co-signaling fits a valuable niche for translational scientists to manage immunosenescence, future study would benefit from the inclusion of older adults with multiple long-term conditions and polypharmacy, ensuring better applicability to actual patients seen in clinical settings.
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Affiliation(s)
- Lucy Rimmer
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Derek A. Mann
- Newcastle Fibrosis Research Group, Biosciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Avan A. Sayer
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
- National Institute for Health and Care Research (NIHR) Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals National Health Service (NHS) Foundation Trust and Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Shoba Amarnath
- Newcastle University Biosciences Institute, Medical School, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Antoneta Granic
- AGE Research Group, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, United Kingdom
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Zhu M, Zhao J, Zhu X, Cheng Q, Zhang S, Kong L. Effects of Health-Promoting Lifestyle on Late-Onset Depression in Older Adults: Mediating Effect of Meaning in Life and Interleukin-6 (IL-6). Psychol Res Behav Manag 2023; 16:5159-5168. [PMID: 38146389 PMCID: PMC10749783 DOI: 10.2147/prbm.s441277] [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: 09/21/2023] [Accepted: 12/14/2023] [Indexed: 12/27/2023] Open
Abstract
Purpose Late-onset depression (LOD) with poor treatment response has high incidence and mortality in the China's aged people, this study aims to explore the correlation between health-promoting lifestyle, meaning in life, interleukin-6 (IL-6) and LOD for providing scientific basis of LOD prevention and rehabilitation. Patients and Methods A total of 496 LOD patients (study group) and healthy older adults (control group) were enrolled and investigated by using the Health-promoting lifestyle Profile-II, revised (HPLP-IIR), Meaning in Life Questionnaire-Chinese Version (MLQ-C), and Hamilton Depression Scale (HAMD). The interleukin-6 (IL-6) in the circulating blood was detected by utilizing ELISA kit. Results The results showed that the scores of all factors in HPLP-IIR and MLQ were significantly lower and IL-6 level was higher in the study group than the control group. Scores of most factors in HPLP-IIR and MLQ negatively and IL-6 positively correlated with scores of subscales and total HAMD score. Meaning in life and IL-6 partially mediated the relationship between health-promoting lifestyles and depression severity in the study group, with the mediating effect explains 15.76% and 22.64% of the total effect, respectively. Conclusion Health-promoting lifestyles, meaning in life, and IL-6 are predictors of LOD, and an unhealthy lifestyle could induce LOD through the mediating effect of meaning in life and IL-6 in older adults.
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Affiliation(s)
- Miao Zhu
- Psychiatry Department, The Oriental People’s Hospital of Xuzhou, Xuzhou, 221004, People’s Republic of China
| | - Juan Zhao
- Psychiatry Department, The Oriental People’s Hospital of Xuzhou, Xuzhou, 221004, People’s Republic of China
| | - Xiaoli Zhu
- Psychological Intervention Center, No.904 Hospital, Changzhou, 213003, People’s Republic of China
| | - Qi Cheng
- Psychological Intervention Center, No.904 Hospital, Changzhou, 213003, People’s Republic of China
| | - Shuyou Zhang
- Psychological Intervention Center, No.904 Hospital, Changzhou, 213003, People’s Republic of China
| | - Lingming Kong
- Psychological Intervention Center, No.904 Hospital, Changzhou, 213003, People’s Republic of China
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Adewuyi FA, Knobel P, Gogna P, Dadvand P. Health effects of green prescription: A systematic review of randomized controlled trials. ENVIRONMENTAL RESEARCH 2023; 236:116844. [PMID: 37574099 DOI: 10.1016/j.envres.2023.116844] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/31/2023] [Accepted: 08/05/2023] [Indexed: 08/15/2023]
Abstract
An increasing number of studies have examined the effects of green prescription on various health outcomes. The aim of this study was to systematically review published randomized controlled trial studies on the health benefits of green prescriptions. We searched PubMed, Scopus, and Web of Science for the relevant original articles published in English until June 30, 2023. Our search initially retrieved 26176 articles, of which 31 studies were included in our review after removing the duplicates and excluding ineligible articles based on their titles, abstracts, and full-text review. Consistent positive health benefits of green prescription were reported for psychological health and wellbeing (16 out of 24 studies), cardiometabolic health (five out of nine studies), physical activity (eight out of nine studies), and inflammation (two out of two studies). The reviewed studies did not report any significant benefits in orthopedic conditions, pain, and recovery from exhaustion disorder due to their implemented green prescriptions; however, the number of studies was too small to generalize the effect of green prescriptions on these outcomes. The quality of these studies was generally acceptable, with 28 studies having some concerns regarding their overall risk of bias and only three studies with a high risk of bias. All in all, this systematic review suggests that green prescriptions can be effective in improving various health outcomes, but further studies with larger sample sizes and objective measures are needed.
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Affiliation(s)
- Fatai A Adewuyi
- ISGlobal, Barcelona, Spain; Universitat de Barcelona, Barcelona, Spain
| | - Pablo Knobel
- Icahn School of Medicine at Mount Sinai, Department of Environmental Medicine and Public Health, New York, NY, USA.
| | - Priyanka Gogna
- Department of Public Health Sciences, Queen's University, Kingston, Ontario, Canada
| | - Payam Dadvand
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain
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Yun J, Yao W, Meng T, Mu Z. Effects of horticultural therapy on health in the elderly: A review and meta-analysis. ZEITSCHRIFT FUR GESUNDHEITSWISSENSCHAFTEN = JOURNAL OF PUBLIC HEALTH 2023:1-27. [PMID: 37361284 PMCID: PMC10240129 DOI: 10.1007/s10389-023-01938-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 05/07/2023] [Indexed: 06/28/2023]
Abstract
Aim Given the current aging population, the demand on medical facilities, facilities for elderly care, and even their high prevalence, it is crucial to investigate the advantages of older people. The purpose of our study was to systematically review the existing literature on the health effects of horticultural therapy as a treatment option for the elderly. Subject and methods Article searches were conducted through five databases: Web of science, Science Direct, PubMed, EBSCO, and Google Scholar, according to the standard method of systematic evaluation and meta-analysis. Thirty-two published articles were included, and 27 relevant variables were meta-analyzed to assess the benefits of horticultural therapy in terms of physical and psychological functioning in the elderly. Results Results show that horticultural therapy may be helpful in helping seniors lose weight -0.195 (95% CI -0.507,0.117), reduce their waist circumference -0.327 (95% CI -0.637, -0.017), lower their stress -0.339 (95% CI -0.610, -0.069) and cortisol -0.902 (95% CI -0.728, -0.002) levels, improve their physical flexibility 0.302 (95% CI 0.036, 0.569), social interaction 0.370, (95% CI 0.115, 0.624), and daily vegetables and fruit consumption 0.688 (95% CI: 0.287, 1.089). Conclusion Horticultural therapy may be a useful tool for enhancing the physical, mental and social aspects of the elderly. However, there is substantial heterogeneity and wide variation in the quality of the included studies. Further high-quality studies, rigorous controls and adjustments for significant confounding variables, and larger populations are needed in the future to further our understanding of the link between horticultural therapy and elder health. Supplementary Information The online version contains supplementary material available at 10.1007/s10389-023-01938-w.
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Affiliation(s)
- Jiayue Yun
- Department of Landscape Architecture, College of Architecture and Urban Planning, Qingdao University of Technology, Qingdao, Shandong 266000 People’s Republic of China
| | - Wenfei Yao
- Department of Landscape Architecture, College of Architecture and Urban Planning, Qingdao University of Technology, Qingdao, Shandong 266000 People’s Republic of China
| | - Tian Meng
- Department of Landscape Architecture, College of Architecture and Urban Planning, Qingdao University of Technology, Qingdao, Shandong 266000 People’s Republic of China
| | - Zhiyue Mu
- Department of Landscape Architecture, College of Architecture and Urban Planning, Qingdao University of Technology, Qingdao, Shandong 266000 People’s Republic of China
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Nguyen PY, Astell-Burt T, Rahimi-Ardabili H, Feng X. Effect of nature prescriptions on cardiometabolic and mental health, and physical activity: a systematic review. Lancet Planet Health 2023; 7:e313-e328. [PMID: 37019572 DOI: 10.1016/s2542-5196(23)00025-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 06/19/2023]
Abstract
Nature prescriptions are gaining popularity as a form of social prescribing in support of sustainable health care. This systematic review and meta-analysis aims to synthesise evidence on the effectiveness of nature prescriptions and determine the factors important for their success. We searched five databases from inception up to July 25, 2021. Randomised and non-randomised controlled studies featuring a nature prescription (ie, a referral or an organised programme, by a health or social professional, to encourage spending time in nature) were included. Two reviewers independently conducted all steps of study selection; one reviewer collected summary data from published reports and conducted the risk of bias assessment. Random-effect DerSimonian-Laird meta-analyses were conducted for five key outcomes. We identified 92 unique studies (122 reports), of which 28 studies contributed data to meta-analyses. Compared with control conditions, nature prescription programmes resulted in a greater reduction in systolic blood pressure (mean difference -4·82 mm Hg [-8·92 to -0·72]) and diastolic blood pressure (mean difference -3·82 mm Hg [-6·47 to -1·16). Nature prescriptions also had a moderate to large effect on depression scores (post-intervention standardised mean difference -0·50 [-0·84 to -0·16]; change from baseline standardised mean difference -0·42 [-0·82 to -0·03]) and anxiety scores (post-intervention standardised mean difference -0·57 [-1·12 to -0·03]; change from baseline standardised mean difference -1·27 [-2·20 to -0·33]). Nature prescriptions resulted in a greater increase in daily step counts than control conditions (mean difference 900 steps [790 to 1010]) but did not improve weekly time of moderate physical activity (mean difference 25·90 min [-10·26 to 62·06]). A subgroup analysis restricted to studies featuring a referring institution showed stronger effects on depression scores, daily step counts, and weekly time of moderate physical activity than the general analysis. Beneficial effects on anxiety and depression scores were mainly provided by interventions involving social professionals whereas beneficial effects on blood pressures and daily step counts were provided mainly by interventions involving health professionals. Most studies have a moderate to high risk of bias. Nature prescription programmes showed evidence of cardiometabolic and mental health benefits and increases in walking. Effective nature prescription programmes can involve a range of natural settings and activities and can be implemented via social and community channels, in addition to health professionals.
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Affiliation(s)
- Phi-Yen Nguyen
- School of Population Health, University of New South Wales, Sydney, NSW, Australia; Population Wellbeing and Environment Research Lab (PowerLab), Sydney, NSW, Australia; School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - Thomas Astell-Burt
- Population Wellbeing and Environment Research Lab (PowerLab), Sydney, NSW, Australia; School of Health and Society, Faculty of Arts, Social Sciences, and Humanities, University of Wollongong, Wollongong, NSW, Australia
| | - Hania Rahimi-Ardabili
- School of Population Health, University of New South Wales, Sydney, NSW, Australia; Population Wellbeing and Environment Research Lab (PowerLab), Sydney, NSW, Australia; Centre for Health Informatics, Australian Institute of Health Innovation, Macquarie University, Sydney, NSW, Australia
| | - Xiaoqi Feng
- School of Population Health, University of New South Wales, Sydney, NSW, Australia; Population Wellbeing and Environment Research Lab (PowerLab), Sydney, NSW, Australia; The George Institute of Global Health, Sydnet, NSW, Australia.
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Liu Y, Zhao W, Lu Y, Zhao Y, Zhang Y, Dai M, Hai S, Ge N, Zhang S, Huang M, Liu X, Li S, Yue J, Lei P, Dong B, Dai L, Dong B. Systematic metabolic characterization of mental disorders reveals age‐related metabolic disturbances as potential risk factors for depression in older adults. MedComm (Beijing) 2022; 3:e165. [PMID: 36204590 PMCID: PMC9523679 DOI: 10.1002/mco2.165] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/01/2022] [Accepted: 07/14/2022] [Indexed: 11/13/2022] Open
Abstract
Mental disorders are associated with dysregulated metabolism, but comprehensive investigations of their metabolic similarities and differences and their clinical relevance are few. Here, based on the plasma metabolome and lipidome of subcohort1, comprising 100 healthy participants, 55 cases with anxiety, 52 persons with depression, and 41 individuals with comorbidity, which are from WCHAT, a perspective cohort study of community‐dwelling older adults aged over 50, multiple metabolites as potential risk factors of mental disorders were identified. Furthermore, participants with mental illnesses were classified into three subtypes (S1, S2, and S3) by unsupervised classification with lipidomic data. Among them, S1 showed higher triacylglycerol and lower sphingomyelin, while S2 displayed opposite features. The metabolic profile of S3 was like that of the normal group. Compared with S3, individuals in S1 and S2 had worse quality of life, and suffered more from sleep and cognitive disorders. Notably, an assessment of 6,467 individuals from the WCHAT showed an age‐related increase in the incidence of depression. Seventeen depression‐related metabolites were significantly correlated with age, which were validated in an independent subcohort2. Collectively, this work highlights the clinical relevance of metabolic perturbation in mental disorders, and age‐related metabolic disturbances may be a bridge‐linking aging and depressive.
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Affiliation(s)
- Yu Liu
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Wanyu Zhao
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Ying Lu
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Yunli Zhao
- Department of Health Research Methods, Evidence, and Impact McMaster University Hamilton Ontario Canada
| | - Yan Zhang
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Miao Dai
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Shan Hai
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Ning Ge
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Shuting Zhang
- Department of Neurology, West China Hospital Sichuan University Chengdu China
| | - Mingjin Huang
- The Third Hospital of Mianyang Sichuan Mental Health Center Mianyang China
| | - Xiaohui Liu
- School of Life Sciences Tsinghua University Beijing China
| | - Shuangqing Li
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Jirong Yue
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Peng Lei
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Biao Dong
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Lunzhi Dai
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
| | - Birong Dong
- National Clinical Research Center for Geriatrics and Department of General Practice State Key Laboratory of Biotherapy West China Hospital Sichuan University Chengdu China
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Ng TKS, Feng L, Chua RY, Goh LG, Kua EH, Mahendran R. A 5-year community program in Singapore to prevent cognitive decline. Asia Pac Psychiatry 2022; 14:e12518. [PMID: 35922040 DOI: 10.1111/appy.12518] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 07/09/2022] [Indexed: 11/30/2022]
Abstract
INTRODUCTION There is a scarcity of naturalistic follow-up studies on cognitive stimulating activities (CSAs), particularly in a real-world setting and over long-term. We thus investigated a pooled novel CSA intervention to prevent cognitive decline amongst community-dwelling older adults without dementia. METHODS Nested within a community-based longitudinal follow-up cohort study of community-dwelling and multi-ethnic older adults (N = 991), a subset of the cohort (n = 264) underwent four single-blinded randomized controlled trials involving four novel CSAs, including mindfulness, horticulture, art therapy, and choral singing. At the cohort's 5-year follow-up, we examined if involvements in the CSAs improved cognition, compared to controls (n = 727). The primary outcomes were changes in global cognition and specific cognitive domain scores measured by the mini-mental state examination (MMSE). Exploratory subgroup analyses stratified by baseline cognitive status and the number of CSAs were also conducted. RESULTS Compared to the control group, there was a small improvement in the CSA group on the total MMSE score (d = 0.108) and MMSE-immediate recall score (d = 0.199). Furthermore, subgroup analyses revealed medium effect sizes of improvements (d = 0.420) in cognitive domains in mild cognitive impairment (MCI) (vs. cognitively healthy) and those involved in two CSAs (vs. one CSA). DISCUSSION In summary, a CSA intervention improved cognition. MCI and those involved in two CSAs gained greater benefits from the CSAs. These sustained improvements in cognitive functions could have a significant impact on delaying or preventing dementia.
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Affiliation(s)
- Ted Kheng Siang Ng
- Department of Psychological Medicine, National University of Singapore, Singapore, Singapore.,Arizona State University, Edson College of Nursing and Health Innovation, Phoenix, USA
| | - Lei Feng
- Department of Psychological Medicine, National University of Singapore, Singapore, Singapore.,Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, NUS, Singapore, Singapore.,Centre for Healthy Longevity, NUHS, Singapore, Singapore
| | - Ru Yuan Chua
- Department of Psychological Medicine, National University of Singapore, Singapore, Singapore
| | - Lee Gan Goh
- Department of Family Medicine, National University of Singapore, Singapore, Singapore
| | - Ee Heok Kua
- Department of Psychological Medicine, National University of Singapore, Singapore, Singapore.,Department of Psychological Medicine, National University Hospital, Singapore, Singapore
| | - Rathi Mahendran
- Department of Psychological Medicine, National University of Singapore, Singapore, Singapore.,Department of Psychological Medicine, National University Hospital, Singapore, Singapore
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Herchet M, Varadarajan S, Kolassa IT, Hofmann M. How Nature Benefits Mental Health. ZEITSCHRIFT FUR KLINISCHE PSYCHOLOGIE UND PSYCHOTHERAPIE 2022. [DOI: 10.1026/1616-3443/a000674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Abstract. We present an overview of the evidence of how nature benefits mental health, popular theories used to explain the effects, and the development potential of these theories. A large body of evidence highlights the beneficial effects of nature on mental health, with observed outcomes ranging from alleviating the symptoms of psychiatric disorders to improvements in cognitive abilities. The theoretical backbone for these salutary effects of nature consists of a set of models, mainly the attention restoration theory (ART), the stress reduction theory (SRT), and the Biophilia hypothesis. However, these high-level models are only loosely related and lack a pronounced biopsychological basis. While biopsychological measurements have been used widely in recent years, these efforts have not sufficiently been reflected in theories aiming to explain the benefits of nature contact for mental health. This paper seeks to encourage interdisciplinary work and further theory development to guide both research and practice toward strategically green and healthy living conditions.
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Affiliation(s)
- Marilisa Herchet
- Center for Open Digital Innovation and Participation (CODIP), Technische Universität Dresden (TU Dresden), Germany
| | - Suchithra Varadarajan
- Clinical & Biological Psychology, Institute of Psychology & Education, Ulm University, Germany
| | - Iris-Tatjana Kolassa
- Clinical & Biological Psychology, Institute of Psychology & Education, Ulm University, Germany
| | - Mathias Hofmann
- Center for Open Digital Innovation and Participation (CODIP), Technische Universität Dresden (TU Dresden), Germany
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Huang W, Hickson LJ, Eirin A, Kirkland JL, Lerman LO. Cellular senescence: the good, the bad and the unknown. Nat Rev Nephrol 2022; 18:611-627. [PMID: 35922662 PMCID: PMC9362342 DOI: 10.1038/s41581-022-00601-z] [Citation(s) in RCA: 265] [Impact Index Per Article: 132.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2022] [Indexed: 01/10/2023]
Abstract
Cellular senescence is a ubiquitous process with roles in tissue remodelling, including wound repair and embryogenesis. However, prolonged senescence can be maladaptive, leading to cancer development and age-related diseases. Cellular senescence involves cell-cycle arrest and the release of inflammatory cytokines with autocrine, paracrine and endocrine activities. Senescent cells also exhibit morphological alterations, including flattened cell bodies, vacuolization and granularity in the cytoplasm and abnormal organelles. Several biomarkers of cellular senescence have been identified, including SA-βgal, p16 and p21; however, few markers have high sensitivity and specificity. In addition to driving ageing, senescence of immune and parenchymal cells contributes to the development of a variety of diseases and metabolic disorders. In the kidney, senescence might have beneficial roles during development and recovery from injury, but can also contribute to the progression of acute kidney injury and chronic kidney disease. Therapies that target senescence, including senolytic and senomorphic drugs, stem cell therapies and other interventions, have been shown to extend lifespan and reduce tissue injury in various animal models. Early clinical trials confirm that senotherapeutic approaches could be beneficial in human disease. However, larger clinical trials are needed to translate these approaches to patient care.
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Affiliation(s)
- Weijun Huang
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - LaTonya J Hickson
- Division of Nephrology and Hypertension, Mayo Clinic, Jacksonville, FL, USA
| | - Alfonso Eirin
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - James L Kirkland
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, USA
| | - Lilach O Lerman
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA.
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Tu HM. Effect of horticultural therapy on mental health: A meta-analysis of randomized controlled trials. J Psychiatr Ment Health Nurs 2022; 29:603-615. [PMID: 35000249 DOI: 10.1111/jpm.12818] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 12/28/2021] [Accepted: 01/05/2022] [Indexed: 11/29/2022]
Abstract
WHAT IS KNOWN ON THE SUBJECT?: Mental health assessment is a common topic in horticultural therapy (HT). Some study findings were contrary to positive findings, although several studies have explored the effect of HT on mental health and reported positive results. There is weak evidence in the benefits of HT based on evidence-based medicine. Stronger evidence of the link between HT and mental health will help in policy making by health policy makers and governments. WHAT THE PAPER ADDS TO EXISTING KNOWLEDGE?: The purpose of this meta-analysis of randomized controlled trials (RCTs) was to explore the effect of HT on mental health. This study is the first meta-analysis of RCTs to provide critical evidence that HT has a positive effect on mental health. The effect size of HT on mental health was medium (0.55). The included studies had no negative effects on mental health. WHAT ARE THE IMPLICATIONS FOR PRACTICE?: HT should be considered a useful therapy to be integrated in healthcare settings by horticultural therapists to improve mental health. In the HT program, indoor and outdoor plant activities, plant-related arts, crafts and other activities were common interventions to improve specific mental health problems through at least eight sessions. ABSTRACT: Introduction HT has been widely used to promote mental health. However, heterogeneity and sample size issues of randomized controlled trials made it challenging to illustrate effect sizes across the evidence. Aim The purpose of this meta-analysis was to explore the effect of HT on mental health. Methods We used the PRISMA framework. A keyword search of Web of Science, PubMed, ProQuest and Cochrane was performed. The inclusion criteria were HT with RCTs and mental health assessments. A random-effects model was used to perform the meta-analysis. Results A total of 1,056 records were searched, and 18 eligible studies were extracted. The included RCTs had no statistical heterogeneity and publication bias. The meta-analysis showed that the HT experimental groups had a significant and positive impact on mental health compared with the control groups (effect size = 0.55). Discussion HT should be considered for enhancing mental health. The included studies had no negative outcomes and the most common HT intervention was at least eight sessions. Therefore, HT should be considered to enhance mental health. However, the concealed allocation and blinding processes should be improved in future studies. Implications for Practice: This study recommends that HT should be integrated into healthcare settings to improve mental health.
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Affiliation(s)
- Hung-Ming Tu
- Department of Horticulture, National Chung Hsing University, Taichung, Taiwan
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Caruso C, Ligotti ME, Accardi G, Aiello A, Candore G. An immunologist's guide to immunosenescence and its treatment. Expert Rev Clin Immunol 2022; 18:961-981. [PMID: 35876758 DOI: 10.1080/1744666x.2022.2106217] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION : The ageing process causes several changes in the immune system, although immune ageing is strongly influenced by individual immunological history, as well as genetic and environmental factors leading to inter-individual variability. AREAS COVERED : Here, we focused on the biological and clinical meaning of immunosenescence. Data on SARS-CoV-2 and Yellow Fever vaccine have demonstrated the clinical relevance of immunosenescence, while inconsistent results, obtained from longitudinal studies aimed at looking for immune risk phenotypes, have revealed that the immunosenescence process is highly context-dependent. Large projects have allowed the delineation of the drivers of immune system variance, including genetic and environmental factors, sex, smoking, and co-habitation. Therefore, it is difficult to identify the interventions that can be envisaged to maintain or improve immune function in older people. That suggests that drug treatment of immunosenescence should require personalized intervention. Regarding this, we discussed the role of changes in lifestyle as a potential therapeutic approach. EXPERT OPINION : Our review points out that age is only part of the problem of immunosenescence. Everyone ages differently because he/she is unique in genetics and experience of life and this applies even more to the immune system (immunobiography). Finally, the present review shows how appreciable results in the modification of immunosenescence biomarkers can be achieved with lifestyle modification.
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Affiliation(s)
- Calogero Caruso
- Laboratorio di Immunopatologia e Immunosenescenza, Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata, Università di Palermo, Palermo, Italy
| | - Mattia Emanuela Ligotti
- Laboratorio di Immunopatologia e Immunosenescenza, Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata, Università di Palermo, Palermo, Italy
| | - Giulia Accardi
- Laboratorio di Immunopatologia e Immunosenescenza, Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata, Università di Palermo, Palermo, Italy
| | - Anna Aiello
- Laboratorio di Immunopatologia e Immunosenescenza, Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata, Università di Palermo, Palermo, Italy
| | - Giuseppina Candore
- Laboratorio di Immunopatologia e Immunosenescenza, Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata, Università di Palermo, Palermo, Italy
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12
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The environmental enrichment ameliorates chronic unpredictable mild stress-induced depressive-like behaviors and cognitive decline by inducing autophagy-mediated inflammation inhibition. Brain Res Bull 2022; 187:98-110. [DOI: 10.1016/j.brainresbull.2022.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/30/2022] [Accepted: 07/02/2022] [Indexed: 12/12/2022]
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13
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Horticulture therapy affected the mental status, sleep quality, and salivary markers of mucosal immunity in an elderly population. Sci Rep 2022; 12:10246. [PMID: 35715581 PMCID: PMC9205955 DOI: 10.1038/s41598-022-14534-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 06/08/2022] [Indexed: 11/09/2022] Open
Abstract
Horticultural therapy (HT) has been reported to be beneficial to mental and physical health. This study investigated the effects of HT on the psychological status and mucosal immunity of elderly individuals. Twenty-four participants aged 70-93 were recruited from residential facilities and adult day-care services. Six different HT activities were designed and guided by licensed instructors who performed saliva collection and helped the participants complete the questionnaires before and after each activity. The sleep quality scores were collected during the 6 weeks of HT activities. Saliva was collected and analyzed to determine the concentrations of immunoglobulin A (IgA), lactoferrin, chromogranin A (CgA), α-amylase (AA) and total protein (TP). Comparisons of the questionnaire scores between preactivity and postactivity showed that feelings of satisfaction and happiness were significantly enhanced after each activity. In addition, sleep quality was significantly improved after the 6-week course of HT activities. Regarding mucosal immunity, the preactivity IgA and IgA/TP were significantly increased at week 3 and week 6; in addition, the ratio of lactoferrin/TP was significantly decreased at week 6 compared to week 1. The postactivity AA and CgA levels were significantly enhanced at weeks 2, 3 and 5 compared to the corresponding preactivity levels. In conclusions, HT activities significantly improved the happiness, satisfaction, well-being and sleep quality of the elderly. Moreover, mucosal immunity proteins, including IgA, lactoferrin, CgA and AA, were significantly increased.
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Hernandez-Garcia E, Chrysikou E, Kalea AZ. The Interplay between Housing Environmental Attributes and Design Exposures and Psychoneuroimmunology Profile-An Exploratory Review and Analysis Paper in the Cancer Survivors' Mental Health Morbidity Context. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:10891. [PMID: 34682637 PMCID: PMC8536084 DOI: 10.3390/ijerph182010891] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/08/2021] [Accepted: 10/14/2021] [Indexed: 12/11/2022]
Abstract
Adult cancer survivors have an increased prevalence of mental health comorbidities and other adverse late-effects interdependent with mental illness outcomes compared with the general population. Coronavirus Disease 2019 (COVID-19) heralds an era of renewed call for actions to identify sustainable modalities to facilitate the constructs of cancer survivorship care and health care delivery through physiological supportive domestic spaces. Building on the concept of therapeutic architecture, psychoneuroimmunology (PNI) indicators-with the central role in low-grade systemic inflammation-are associated with major psychiatric disorders and late effects of post-cancer treatment. Immune disturbances might mediate the effects of environmental determinants on behaviour and mental disorders. Whilst attention is paid to the non-objective measurements for examining the home environmental domains and mental health outcomes, little is gathered about the multidimensional effects on physiological responses. This exploratory review presents a first analysis of how addressing the PNI outcomes serves as a catalyst for therapeutic housing research. We argue the crucial component of housing in supporting the sustainable primary care and public health-based cancer survivorship care model, particularly in the psychopathology context. Ultimately, we illustrate a series of interventions aiming at how housing environmental attributes can trigger PNI profile changes and discuss the potential implications in the non-pharmacological treatment of cancer survivors and patients with mental morbidities.
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Affiliation(s)
- Eva Hernandez-Garcia
- The Bartlett Real Estate Institute, The Bartlett School of Sustainable Construction, University College London, London WC1E 6BT, UK;
| | - Evangelia Chrysikou
- The Bartlett Real Estate Institute, The Bartlett School of Sustainable Construction, University College London, London WC1E 6BT, UK;
- Clinic of Social and Family Medicine, Department of Social Medicine, University of Crete, 700 13 Heraklion, Greece
| | - Anastasia Z. Kalea
- Division of Medicine, University College London, London WC1E 6JF, UK;
- Institute of Cardiovascular Science, University College London, London WC1E 6HX, UK
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15
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Increased plasma brain-derived neurotrophic factor (BDNF) as a potential biomarker for and compensatory mechanism in mild cognitive impairment: a case-control study. Aging (Albany NY) 2021; 13:22666-22689. [PMID: 34607976 PMCID: PMC8544315 DOI: 10.18632/aging.203598] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 09/18/2021] [Indexed: 12/12/2022]
Abstract
Background: Previous meta-analyses examining the continuum of Alzheimer’s disease (AD) concluded significantly decreased peripheral brain-derived neurotrophic factor (BDNF) in AD. However, across different meta-analyses, there remain inconsistent findings on peripheral BDNF levels in individuals with mild cognitive impairment (MCI). This issue has been attributed to the highly heterogenous clinical and laboratory factors. Thus, BDNF’s level, discriminative accuracy for identifying all-cause MCI and its subtypes, and its associations with other biomarkers and neurocognitive domains, remain largely unknown. Methods: To address this heterogeneity, we compared a healthy control cohort (n=56, 45 female) to an MCI cohort (n=40, 28 female), to determine whether plasma BDNF, hs-CRP, and DHEA-S can differentiate healthy from MCI individuals, including two MCI subtypes (amnestic [aMCI] and non-amnestic [non-aMCI]). The associations between BDNF with other biomarkers and neurocognitive tests were examined. Adults with cerebral palsy were included as sensitivity analyses. Results: Compared to healthy controls, BDNF was significantly higher in all-cause MCI, aMCI, and non-aMCI. Furthermore, BDNF had good (AUC=0.84, 95% CI=0.74 to 0.95, p<0.001) and excellent discriminative accuracies (AUC=0.92, 95% CI=0.84 to 1.00, p<0.001) for all-cause MCI and non-amnestic MCI, respectively. BDNF was significantly and positively associated with plasma hs-CRP (β=0.26, 95% CI=0.02 to 0.50, p=0.038), despite attenuated association upon controlling for BMI (β=0.15, 95% CI=-0.08 to 0.38, p=0.186). Multiple inverse associations between BDNF and detailed neurocognitive tests were also detected. Conclusions: These findings suggest BDNF is increased as a compensatory mechanism in preclinical dementia, supporting the neurotrophic and partially the inflammatory hypotheses of cognitive impairment.
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Ng TKS, Feng L, Fam J, Rawtaer I, Kumar AP, Rane G, Cheah IKM, Mahendran R, Lee YK, Tan EC, Goh LG, Kua EH, Mahendran R. Mindfulness Awareness Practice (MAP) to Prevent Dementia in Older Adults with Mild Cognitive Impairment: Protocol of a Randomized Controlled Trial and Implementation Outcomes. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:10205. [PMID: 34639513 PMCID: PMC8508350 DOI: 10.3390/ijerph181910205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 12/23/2022]
Abstract
BACKGROUND With an aging population, developing non-pharmacological interventions (NPIs) to delay dementia has become critical. Apart from cognitive decline, dementia is associated with multiple pathophysiology, including increased oxidative stress, dysregulated gene expressions, cytokine, neurotrophin, and stress markers, telomere shortening, and deteriorations in brain connectivity. Although mindfulness practices have been proposed to ameliorate these biological changes, no empirical studies were conducted. We thus aimed to investigate the effects of mindfulness awareness practice (MAP) to prevent cognitive decline and improve peripheral biomarkers in community-dwelling older adults diagnosed with mild cognitive impairment (MCI). METHODS/DESIGN This was a single-blinded and parallel-group randomized controlled trial with two arms (intervention and active control arms), conducted over nine months. A total of 60 consenting community-dwelling older adults diagnosed with MCI were planned to be randomized in a 1:1 ratio to either the MAP or the Health Education Program (HEP). Interventions were performed weekly for the initial 12 weeks, and monthly for the subsequent six months. Outcome measures were assessed at baseline, 3-month, and 9-month post-intervention by blinded assessors. Primary outcomes were neurocognitive tests, comprehensive peripheral biomarkers, and brain imaging scans. Secondary outcomes included basic health screening measures, affective symptoms, and measures of physical functions. Linear-mixed models were used to examine the effects of MAP on these outcome measures. SIGNIFICANCE This is the first randomized controlled trial to systematically investigate the effects of a mindfulness intervention in improving cognitive functions and various biomarkers in community-dwelling older adults diagnosed with MCI. Our findings have the potential to inform mindfulness intervention as a novel approach to delay dementia.
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Affiliation(s)
- Ted Kheng Siang Ng
- Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore; (J.F.); (E.H.K.)
- Edson College of Nursing and Health Innovation, Arizona State University, Phoenix, AZ 85004, USA
- Institute of Behavioral Medicine, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Lei Feng
- Department of Psychological Medicine, National University Hospital, 1E Kent Ridge Road, Singapore 117599, Singapore;
| | - Johnson Fam
- Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore; (J.F.); (E.H.K.)
- Department of Psychological Medicine, National University Hospital, 1E Kent Ridge Road, Singapore 117599, Singapore;
| | - Iris Rawtaer
- Department of Psychiatry, Sengkang General Hospital & SingHealth Duke-NUS Centre of Memory and Cognitive Disorders, Singapore 544886, Singapore;
| | - Alan Prem Kumar
- Cancer Science Institute of Singapore, Yong Loo Lin School of Medicine, National University of Singapore, 28 Medical Drive, Singapore 117599, Singapore; (A.P.K.); (G.R.)
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 28 Medical Drive, Singapore 117599, Singapore
| | - Grishma Rane
- Cancer Science Institute of Singapore, Yong Loo Lin School of Medicine, National University of Singapore, 28 Medical Drive, Singapore 117599, Singapore; (A.P.K.); (G.R.)
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 28 Medical Drive, Singapore 117599, Singapore
| | - Irwin Kee-Mun Cheah
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 8 Medical Drive, Singapore 117597, Singapore;
| | - Ratha Mahendran
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road, Singapore 117599, Singapore;
| | - Yuan Kun Lee
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, 5 Science Drive 2, Singapore 117545, Singapore;
| | - Ene Choo Tan
- Division of Clinical Support Services, KK Women’s and Children’s Hospital, 100 Bukit Timah Road, Singapore 229899, Singapore;
| | - Lee Gan Goh
- Department of Family Medicine, National University Health System, 1E Kent Ridge Rd, Singapore 119228, Singapore;
| | - Ee Heok Kua
- Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore; (J.F.); (E.H.K.)
- Department of Psychological Medicine, National University Hospital, 1E Kent Ridge Road, Singapore 117599, Singapore;
| | - Rathi Mahendran
- Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore; (J.F.); (E.H.K.)
- Department of Psychological Medicine, National University Hospital, 1E Kent Ridge Road, Singapore 117599, Singapore;
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17
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Donovan T, Bain AL, Tu W, Pyne DB, Rao S. Influence of Exercise on Exhausted and Senescent T Cells: A Systematic Review. Front Physiol 2021; 12:668327. [PMID: 34489717 PMCID: PMC8417807 DOI: 10.3389/fphys.2021.668327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 07/29/2021] [Indexed: 11/17/2022] Open
Abstract
The impaired effector function of exhausted and senescent T cells is implicated in cancer progression and inadequate vaccine responses. Exercise has been shown to improve cancer therapy and vaccine efficacy, most likely by improving immune function. However, given inconsistent terminology and definitions, the interactions between exercise and exhausted and senescent T cells remain unclear. We therefore performed a systematic review to investigate the effect of exercise on senescent and exhausted CD8+ T cell populations clearly defined by protein surface markers. Thirty articles were included, with the majority (n = 24) reporting senescent T cell populations defined according to a variety of surface markers. Repeated exercise was shown to be beneficial through limiting the accumulation of senescent and exhausted CD8+ T cells. This outcome is likely related to exercise-induced preferential mobilization of senescent T cells promoting apoptosis in the peripheral blood compartment. Future studies need to determine the clinical relevance of this effect in cancer prevention and vaccine efficacy. Data regarding exercise and exhausted T cells are limited due to a lack of available high-quality studies. Future studies require the control of confounding variables such as sex and cytomegalovirus (CMV) status, and consistent definitions of exhausted and senescent T cell populations to improve comparisons between studies and interventions.
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Affiliation(s)
- Thomasina Donovan
- Research Institute for Sport and Exercise, University of Canberra, Canberra, ACT, Australia.,Australian Centre for Health Services Innovation and Centre for Healthcare Transformation, School of Public Health and Social Work, Faculty of Health, Queensland University of Technology, Brisbane, QLD, Australia
| | - Amanda L Bain
- Gene Regulation and Translational Medicine Laboratory, Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Wenjuan Tu
- Gene Regulation and Translational Medicine Laboratory, Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - David B Pyne
- Research Institute for Sport and Exercise, University of Canberra, Canberra, ACT, Australia
| | - Sudha Rao
- Gene Regulation and Translational Medicine Laboratory, Immunology Department, QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
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18
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Polutchko SK, Glime GNE, Demmig-Adams B. Synergistic Action of Membrane-Bound and Water-Soluble Antioxidants in Neuroprotection. Molecules 2021; 26:5385. [PMID: 34500818 PMCID: PMC8434335 DOI: 10.3390/molecules26175385] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/01/2021] [Accepted: 09/02/2021] [Indexed: 12/30/2022] Open
Abstract
Prevention of neurodegeneration during aging, and support of optimal brain function throughout the lifespan, requires protection of membrane structure and function. We review the synergistic action of different classes of dietary micronutrients, as well as further synergistic contributions from exercise and stress reduction, in supporting membrane structure and function. We address membrane-associated inflammation involving reactive oxygen species (ROS) that produce immune regulators from polyunsaturated fatty acids (PUFAs) of membrane phospholipids. The potential of dietary micronutrients to maintain membrane fluidity and prevent chronic inflammation is examined with a focus on synergistically acting membrane-soluble components (zeaxanthin, lutein, vitamin E, and omega-3 PUFAs) and water-soluble components (vitamin C and various phenolics). These different classes of micronutrients apparently operate in a series of intertwined oxidation-reduction cycles to protect membrane function and prevent chronic inflammation. At this time, it appears that combinations of a balanced diet with regular moderate exercise and stress-reduction practices are particularly beneficial. Effective whole-food-based diets include the Mediterranean and the MIND diet (Mediterranean-DASH Intervention for Neurodegenerative Delay diet, where DASH stands for Dietary Approaches to Stop Hypertension).
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Affiliation(s)
| | | | - Barbara Demmig-Adams
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309-0334, USA; (S.K.P.); (G.N.E.G.)
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19
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Ng TKS, Matchar DB, Pyrkov TV, Fedichev PO, Chan AWM, Kennedy B. Association between housing type and accelerated biological aging in different sexes: moderating effects of health behaviors. Aging (Albany NY) 2021; 13:20029-20049. [PMID: 34456185 PMCID: PMC8436907 DOI: 10.18632/aging.203447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 08/10/2021] [Indexed: 11/25/2022]
Abstract
Introduction: Despite associated with multiple geriatric disorders, whether housing type, an indicator of socioeconomic status (SES) and environmental factors, is associated with accelerated biological aging is unknown. Furthermore, although individuals with low-SES have higher body mass index (BMI) and are more likely to smoke, whether BMI and smoking status moderate the association between SES and biological aging is unclear. We examined these questions in urbanized low-SES older community-dwelling adults. Methods: First, we analyzed complete blood count data using the cox proportional hazards model and derived measures for biological age (BA) and biological age acceleration (BAA, the higher the more accelerated aging) (N = 376). Subsequently, BAA was regressed on housing type, controlling for covariates, including four other SES indicators. Interaction terms between housing type and BMI/smoking status were separately added to examine their moderating effects. Total sample and sex-stratified analyses were performed. Results: There were significant differences between men and women in housing type and BAA. Compared to residents in ≥3 room public or private housing, older adults resided in 1–2 room public housing had a higher BAA. Furthermore, BMI attenuated the association between housing type and BAA. In sex-stratified analyses, the main and interaction effects were only significant in women. In men, smoking status instead aggravated the association between housing type and BAA. Conclusion: Controlling for other SES indicators, housing type is an independent socio-environmental determinant of BA and BAA in a low-SES urbanized population. There were also sex differences in the moderating effects of health behaviors on biological aging.
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Affiliation(s)
- Ted Kheng Siang Ng
- Arizona State University, Edson College of Nursing and Health Innovation, Phoenix, AZ 85004, USA.,National Cheng Kung University, Institute of Behavioral Medicine, College of Medicine, Taiwan
| | - David Bruce Matchar
- Duke-National University of Singapore Medical School, Program in Health Services and Systems Research, Singapore.,Duke University School of Medicine, Department of Medicine (General Internal Medicine), Durham, NC 27710, USA
| | | | - Peter O Fedichev
- GERO PTE. LTD., Singapore.,Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141700, Russia
| | - Angelique Wei-Ming Chan
- Duke-National University of Singapore Medical School, Program in Health Services and Systems Research, Singapore.,Duke-National University of Singapore Medical School, Center for Aging, Research and Education, Singapore.,National University of Singapore, Department of Sociology, Faculty of Arts and Social Sciences, Singapore
| | - Brian Kennedy
- National University of Singapore, Center for Healthy Longevity, Healthy Longevity Program and Department of Biochemistry, Yong Loo Lin School of Medicine, Singapore.,Singapore Institute of Clinical Sciences, A*STAR, Singapore
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20
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Ng TKS, Gan DRY, Mahendran R, Kua EH, Ho RCM. Social connectedness as a mediator for horticultural therapy's biological effect on community-dwelling older adults: Secondary analyses of a randomized controlled trial. Soc Sci Med 2021; 284:114191. [PMID: 34271401 DOI: 10.1016/j.socscimed.2021.114191] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 06/21/2021] [Accepted: 06/28/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Elevated levels of inflammatory marker and a lack of social connectedness are two prominent risk factors for developing dementia and depression. Horticultural therapy (HT) has been shown to improve social connectedness and inflammatory markers. However, the underpinning mechanisms of HT remained unknown. Within this study, we hypothesized that improved social connectedness mediates the effects of HT on IL-6 levels. METHODS The present study is a secondary analysis of a randomized controlled trial investigating the bio-psycho-social effects of HT. Social connectedness was operationalized as positive relationships with others (PRWO), a sub-scale of the Ryff's scale of psychological well-being. IL-6 was quantified using a commercial ELISA kit. Outcomes were assessed at baseline, 3-month and 6-month post-intervention. Mediation analyses with bootstrapping were run to investigate our primary hypothesis. All analyses were controlled for covariates. RESULTS We recruited 59 participants (78% women; 67.10 ± 4.31 years). 29 participants partook in HT and 30 participants were included in the waitlist control group. At baseline, social connectedness was significantly correlated with IL-6 levels (β = -0.12, 95% CI = -0.21 to -0.03, p = 0.008). Furthermore, social connectedness at 3-month significantly mediated the effects of HT on IL-6 levels at 6-month (β = 0.32, 95% CI = 0.09 to 0.54, p = 0.005; β = -0.25, 95% CI = -0.45 to -0.05, p = 0.016). CONCLUSIONS These findings highlight the critical roles of social connectedness as a social determinant of health in eliciting HT's biological effects. When administering HT, interventionalists should consider social connectedness as a modifiable factor for ameliorating increased inflammation in older adults.
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Affiliation(s)
- Ted Kheng Siang Ng
- Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road, NUHS Tower Block, 119228, Singapore.
| | - Daniel R Y Gan
- Real Estate Foundation Postdoctoral Fellow at the Gerontology Research Centre, Simon Fraser University, #2800-515 West Hastings St, Vancouver, B.C, V6B 5K3, Canada
| | - Rathi Mahendran
- Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road, NUHS Tower Block, 119228, Singapore; Department of Psychological Medicine, National University Hospital, 1E Kent Ridge Road, NUHS Tower Block, 119228, Singapore; Academic Development Department, Duke-NUS Medical School, 8 College Road, Singapore
| | - Ee Heok Kua
- Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road, NUHS Tower Block, 119228, Singapore; Department of Psychological Medicine, National University Hospital, 1E Kent Ridge Road, NUHS Tower Block, 119228, Singapore
| | - Roger C-M Ho
- Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, 1E Kent Ridge Road, NUHS Tower Block, 119228, Singapore; Department of Psychological Medicine, National University Hospital, 1E Kent Ridge Road, NUHS Tower Block, 119228, Singapore
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21
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Meore A, Sun S, Byma L, Alter S, Vitale A, Podolak E, Gibbard B, Adams T, Boyer J, Galfalvy H, Yehuda R, Feder A, Haghighi F. Pilot evaluation of horticultural therapy in improving overall wellness in veterans with history of suicidality. Complement Ther Med 2021; 59:102728. [PMID: 33965561 DOI: 10.1016/j.ctim.2021.102728] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/02/2021] [Accepted: 05/03/2021] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES Novel approaches to mental health and suicide prevention are lacking. Converging evidence has shown the effectiveness of horticultural therapy (HT) in improving mental health symptoms, but whether it would reduce suicide risk and contributing risk factors is unknown. DESIGN Using a cohort model, HT was delivered 3.5 h over four weekly, sessions administered by a registered horticultural therapist to veterans with history of suicide ideation or attempt who felt isolated and experienced ongoing environmental stressors with interest in learning new coping strategies. SETTING HT delivery occurred in an urban garden, through a community partnership between the VA (Veterans Administration) and the New York Botanical Garden. Guided by principles of biophilia, participating veterans took part in nature walks, self-reflection and journaling, and planting activities. OUTCOME MEASURES Stress, mood, pain, and social isolation levels were measured weekly pre-post HT sessions using thermometer scales, with concordant validity to validated clinical instruments. RESULTS Of the 20 men and women with a history of suicide attempts/ideation, HT demonstrated immediate improvements after each session across all symptom domains in magnitude of reduction in stress, pain, mood, and loneliness. The effect sizes were in medium to large range (Cohen's d>.5). Additionally, a single HT session showed a sustained effect over subsequent 2-to-4 weeks as observed by the significantly decreased pre-session thermometer scores in subsequent weeks. Reductions in mood symptoms correlated with decline in suicidal ideation (rs = 0.63). CONCLUSION HT intervention maybe a promising therapeutic modality for improving overall wellness in suicide prevention in at-risk veteran populations.
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Affiliation(s)
- Anne Meore
- New York Botanical Garden, Bronx, NY, United States
| | - Shengnan Sun
- James J. Peters VA Medical Center, Bronx, NY, United States; Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Lauren Byma
- James J. Peters VA Medical Center, Bronx, NY, United States
| | - Sharon Alter
- James J. Peters VA Medical Center, Bronx, NY, United States
| | - Amanda Vitale
- James J. Peters VA Medical Center, Bronx, NY, United States; Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Evan Podolak
- James J. Peters VA Medical Center, Bronx, NY, United States
| | | | - Toby Adams
- New York Botanical Garden, Bronx, NY, United States
| | - James Boyer
- New York Botanical Garden, Bronx, NY, United States
| | | | - Rachel Yehuda
- James J. Peters VA Medical Center, Bronx, NY, United States; Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Ann Feder
- James J. Peters VA Medical Center, Bronx, NY, United States
| | - Fatemeh Haghighi
- James J. Peters VA Medical Center, Bronx, NY, United States; Icahn School of Medicine at Mount Sinai, New York, NY, United States.
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