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Ho JQ, Kuschner WG, Verghese J. Peak expiratory flow predicts motoric cognitive risk syndrome: A cohort study. J Am Geriatr Soc 2024. [PMID: 39382106 DOI: 10.1111/jgs.19210] [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: 12/07/2023] [Revised: 09/03/2024] [Accepted: 09/17/2024] [Indexed: 10/10/2024]
Abstract
BACKGROUND Poor respiratory function, including low peak expiratory flow (PEF), is a risk factor for dementia. Motoric cognitive risk syndrome (MCR) is a predementia syndrome characterized by slow gait and subjective cognitive complaints. However, the association between PEF and MCR remains unclear. This study examined the cross-sectional and longitudinal association between PEF and MCR. METHODS The National Health and Aging Trends Study (NHATS), which is a nationally representative cohort of adults ≥65 years of age in the United States, was analyzed from 2011 to 2017. Logistic regression and discrete-time proportional hazards models tested the association of PEF standardized residuals (SR) at baseline with prevalent and incident MCR, respectively. The models adjusted for multiple sociodemographic and health-related covariates. RESULTS Among 5328 participants (57% women) included at baseline, lower PEF SR was associated with higher prevalence of MCR. Compared with the ≥80 PEF SR percentile group, the <30 and 30-50 percentile groups had significantly higher odds of prevalent MCR (OR 3.04 [95% CI 1.85, 5.01]; OR 2.06 [95% CI 1.19, 3.54], respectively). Over six years of follow-up, lower PEF SR was also associated with higher incidence of MCR. Compared with the ≥80 PEF SR percentile group, the <30 and 30-50 percentile groups had significantly higher risk of incident MCR (HR 1.81 [95% CI 1.24, 2.66]; HR 1.55 [95% CI 1.02, 2.34], respectively). CONCLUSIONS Lower PEF was associated with higher prevalence and incidence of MCR. Poor respiratory function should be further investigated as a potentially modifiable risk factor for MCR and cognitive decline.
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Affiliation(s)
- Jim Q Ho
- Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Ware G Kuschner
- Department of Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Joe Verghese
- Department of Medicine, Albert Einstein College of Medicine, Bronx, New York, USA
- Department of Neurology, Albert Einstein College of Medicine, Bronx, New York, USA
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Bonorino KC, Iria Kraus S, Henrique Cardoso Martins G, Jorge Probst J, Petry Moeke DM, Henrique Dos Santos Sumar A, Reis Casal Y, Rodolfo Moreira Borges Oliveira F, Sordi R, Assreuy J, Duarte da Silva M, de Camargo Hizume Kunzler D. Lung-brain crosstalk: Behavioral disorders and neuroinflammation in septic survivor mice. Brain Behav Immun Health 2024; 40:100823. [PMID: 39252983 PMCID: PMC11381903 DOI: 10.1016/j.bbih.2024.100823] [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: 12/22/2023] [Revised: 06/06/2024] [Accepted: 07/15/2024] [Indexed: 09/11/2024] Open
Abstract
Although studies have suggested an association between lung infections and increased risk of neuronal disorders (e.g., dementia, cognitive impairment, and depressive and anxious behaviors), its mechanisms remain unclear. Thus, an experimental mice model of pulmonary sepsis was developed to investigate the relationship between lung and brain inflammation. Male Swiss mice were randomly assigned to either pneumosepsis or control groups. Pneumosepsis was induced by intratracheal instillation of Klebsiella pneumoniae, while the control group received a buffer solution. The model's validation included assessing systemic markers, as well as tissue vascular permeability. Depression- and anxiety-like behaviors and cognitive function were assessed for 30 days in sepsis survivor mice, inflammatory profiles, including cytokine levels (lungs, hippocampus, and prefrontal cortex) and microglial activation (hippocampus), were examined. Pulmonary sepsis damaged distal organs, caused peripheral inflammation, and increased vascular permeability in the lung and brain, impairing the blood-brain barrier and resulting in bacterial dissemination. After sepsis induction, we observed an increase in myeloperoxidase activity in the lungs (up to seven days) and prefrontal cortex (up to 24 h), proinflammatory cytokines in the hippocampus and prefrontal cortex, and percentage of areas with cells positive for ionized calcium-binding adaptor molecule 1 (IBA-1) in the hippocampus. Also, depression- and anxiety-like behaviors and changes in short-term memory were observed even 30 days after sepsis induction, suggesting a crosstalk between inflammatory responses of lungs and brain.
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Affiliation(s)
| | | | | | - Jéssica Jorge Probst
- Federal University of Santa Catarina, Postgraduate Program in Biochemistry, Brazil
| | | | | | - Yuri Reis Casal
- Neuropathology, Department of Pathology, Medical School Hospital of the São Paulo University, Brazil
| | | | - Regina Sordi
- Department of Pharmacology, Center of Biological Sciences, Federal University of Santa Catarina, Brazil
| | - Jamil Assreuy
- Department of Pharmacology, Center of Biological Sciences, Federal University of Santa Catarina, Brazil
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Cai F, Xue S, Si G, Liu Y, Chen X, He J, Zhang M. Prediction and validation of mild cognitive impairment in occupational dust exposure population based on machine learning. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 285:117111. [PMID: 39332198 DOI: 10.1016/j.ecoenv.2024.117111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 09/03/2024] [Accepted: 09/24/2024] [Indexed: 09/29/2024]
Abstract
OBJECTIVE Workers exposed to dust for extended periods may experience varying degrees of cognitive impairment. However, limited research exists on the associated risk factors. This study aims to identify key variables using machine learning algorithms (ML) and develop a model to predict the occurrence of mild cognitive impairment in miners. METHODS A total of 1938 miners were included in the study. Univariate analysis and multivariable logistic regression were employed to identify independent risk factors for cognitive impairment among miners. The dataset was randomly divided into a training set and a validation set in an 8:2 ratio of 1550 and 388 individuals, respectively. An additional group of 351 miners was collected as a test set for cognitive impairment assessment. Seven machine learning algorithms, including XGBoost, Logistic Regression, Random Forest, Complement Naive Bayes, Multi-layer Perceptron, Support Vector Machine, and K-Nearest Neighbors, were used to establish a predictive model for mild cognitive impairment in the dust-exposed population, based on baseline characteristics of the workers. The predictive performance of the models was evaluated using the Area Under the Receiver Operating Characteristic Curve (AUC), and the XGBoost model was further explained using the Shapley Additive exPlanations (SHAP) package. Cognitive function assessments using rank sum tests were conducted to compare differences in cognitive domains between the mild cognitive impairment group and the normal group. RESULTS Univariate and multivariable logistic regression analyses revealed that education level, Age, Work years, SSRS (Self-Rating Scale for Stress), and HAMA (Hamilton Anxiety Rating Scale) were independent risk factors for cognitive impairment among dust-exposed workers. Comparative analysis of the performance of the seven machine learning algorithms demonstrated that XGBoost (training set: AUC=0.959, validation set: AUC=0.795) and Logistic Regression (training set: AUC=0.818, validation set: AUC=0.816) models exhibited superior predictive performance. Results from the test set showed that the AUC of the XGBoost model (AUC=0.913) outperformed the Logistic Regression model (AUC=0.778). Miners with mild cognitive impairment exhibited significant impairments (p<0.05) in visual-spatial abilities, attention, abstract thinking, and memory areas. CONCLUSION Machine learning algorithms can predict the risk of cognitive impairment in this population, with the XGBoost algorithm showing the best performance. The developed model can guide the implementation of appropriate preventive measures for dust-exposed workers.
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Affiliation(s)
- Fulin Cai
- The First Affiliated Hospital of Anhui University of Science and Technology, Huainan, China; Anhui University of Science and Technology, Huainan, China
| | - Sheng Xue
- Anhui University of Science and Technology, Huainan, China.
| | - Guangyao Si
- University of New South Wales, Sydney, Australia.
| | - Yafeng Liu
- Anhui University of Science and Technology, Huainan, China
| | - Xiufeng Chen
- The First Affiliated Hospital of Anhui University of Science and Technology, Huainan, China
| | - Jiale He
- The First Affiliated Hospital of Anhui University of Science and Technology, Huainan, China
| | - Mei Zhang
- The First Affiliated Hospital of Anhui University of Science and Technology, Huainan, China; Anhui University of Science and Technology, Huainan, China.
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Iwai-Saito K, Sato K, Fujii M, Kondo K. Pneumococcal vaccination, but not influenza vaccination, is negatively associated with incident dementia among Japanese older adults: The JAGES 2013-2022 prospective cohort study. Brain Behav Immun 2024; 120:452-463. [PMID: 38925416 DOI: 10.1016/j.bbi.2024.06.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 06/21/2024] [Accepted: 06/23/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND It is unclear whether inactivated influenza vaccination (IIV) or pneumococcal vaccination are associated with the risk of dementia; however, both types of vaccination are recommended for older adults. Studies have shown that the IIV is negatively associated with incident dementia; however, the uptake of pneumococcal vaccinations has not been considered. We investigated the independent associations of IIV and 23-valent pneumococcal polysaccharide vaccine (PPSV23) with incident dementia in older adults. METHODS Health-related information on older Japanese adults was obtained through a baseline survey conducted in 2013 (baseline survey). The uptake of IIV and PPSV23 was determined in a second survey conducted in 2016 (second wave). Both surveys were conducted among independent Japanese older adults aged ≥ 65 years at the two surveys and who had not been certified as needing long-term care (LTC). In the second wave, 9,865 participants were followed up for 3.5 years (short-term follow-up), and 6,995 participants were followed up for six years and five months (long-term follow-up) until they required LTC due to dementia onset (incident dementia). A competing risk model with stabilized inverse probability weighting (SIPW) was constructed to calculate the hazard ratios (HRs) and 95 % confidence intervals (CIs) of incident dementia. RESULTS PPSV23 uptake was negatively associated with incident dementia among participants in both the short- and long-term follow-up periods after SIPW (short-term follow-up: HR: 0.77, 95 % CI: 0.63 - 0.95; long-term follow-up: HR: 0.83, 95 % CI: 0.70 - 0.97). Conversely, IIV uptake was not associated with incident dementia among participants in either follow-up group (short-term follow-up: HR: 0.86, 95 % CI: 0.63-1.16; long-term follow-up: HR: 0.99, 95 % CI: 0.76-1.29). The PPSV23 uptake was negatively associated with incident dementia in participants without the IIV uptake (short-term follow-up: HR: 0.44, 95 % CI: 0.24 - 0.81; long-term follow-up: HR: 0.47, 95 % CI: 0.29 - 0.76). Conversely, the IIV uptake was not associated with incident dementia regardless of the PPSV23 status (short-term follow-up: HR: 0.87, 95 % CI: 0.62 - 1.23; long-term follow-up: HR: 1.00, 95 % CI: 0.74 - 1.35). CONCLUSION Our results suggest that the PPSV23 uptake was independently associated with the incidence of dementia. However, the IIV uptake was not associated with the incidence of dementia.
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Affiliation(s)
- Kousuke Iwai-Saito
- Division of International Health, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan.
| | - Koryu Sato
- Faculty of Policy Management, Keio University, 5322 Endo, Fujisawa-shi, Kanagawa 252-0882, Japan.
| | - Masahiro Fujii
- Division of Virology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan.
| | - Katsunori Kondo
- Department of Social Preventive Medical Sciences, Center for Preventive Medical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 360-0856, Japan; Department of Gerontological Evaluation, Center for Gerontology and Social Science, Research Institution, National Center for Geriatrics and Gerontology, Aichi, Japan.
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Grande G, Li Y, Trevisan C, Rizzuto D, Kalpouzos G, Ding M, Laukka EJ, Bellander T, Fratiglioni L, Qiu C. Lung function in relation to brain aging and cognitive transitions in older adults: A population-based cohort study. Alzheimers Dement 2024; 20:5662-5673. [PMID: 38970219 PMCID: PMC11350049 DOI: 10.1002/alz.14079] [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: 10/17/2023] [Revised: 04/27/2024] [Accepted: 05/29/2024] [Indexed: 07/08/2024]
Abstract
BACKGROUND We investigated the association of peak expiratory flow (PEF) with dementia; cognitive impairment, no dementia (CIND); and transition from CIND to dementia, and possible underlying neuropathological mechanisms. METHODS A population-based cohort of adults aged 60+ was followed over 15 years to detect dementia (Diagnostic and Statistical Manual of Mental Disorders, 4th edition criteria), CIND (assessed through a cognitive battery), and progression from CIND to dementia, in relation to baseline PEF observations. A subsample (n = 462) had 6-year follow-up data on brain magnetic resonance imaging markers of neurodegeneration and small vessel disease. RESULTS In fully adjusted models, poor PEF performance (< 10th vs. ≥ 80th percentile) was associated with increased hazards for dementia (hazard ratio [HR] = 1.89; 95% confidence interval [CI] = 1.23-2.92) and CIND (HR = 1.55; 95% CI = 1.01-2.38) and CIND progression to dementia, although not statistically significantly (HR = 2.44; 95% CI = 0.78-6.88). People with poor PEF also experienced the fastest ventricular enlargement (β coefficient = 0.67 mL/year; 95% CI = 0.13-1.21) and had the highest likelihood of developing lacunes (odds ratio = 5.05; 95% CI = 1.01-25.23). DISCUSSION Poor lung function contributes to cognitive deterioration possibly through accelerated brain atrophy and microvascular damage. HIGHLIGHTS Poor lung function increased the risk of dementia and mild cognitive impairment (MCI). Poor lung function accelerated the progression from MCI to dementia. Poor lung function was linked to brain microvascular damage and global brain atrophy.
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Affiliation(s)
- Giulia Grande
- Aging Research CenterDepartment of NeurobiologyCare Sciences and SocietyKarolinska Institutet and Stockholm UniversityStockholmSweden
- Stockholm Gerontology Research CentreStockholmSweden
| | - Yuanjing Li
- Aging Research CenterDepartment of NeurobiologyCare Sciences and SocietyKarolinska Institutet and Stockholm UniversityStockholmSweden
| | - Caterina Trevisan
- Aging Research CenterDepartment of NeurobiologyCare Sciences and SocietyKarolinska Institutet and Stockholm UniversityStockholmSweden
- Department of Medical SciencesUniversity of FerraraFerraraItaly
| | - Debora Rizzuto
- Aging Research CenterDepartment of NeurobiologyCare Sciences and SocietyKarolinska Institutet and Stockholm UniversityStockholmSweden
- Stockholm Gerontology Research CentreStockholmSweden
| | - Grégoria Kalpouzos
- Aging Research CenterDepartment of NeurobiologyCare Sciences and SocietyKarolinska Institutet and Stockholm UniversityStockholmSweden
| | - Mozhu Ding
- Unit of EpidemiologyInstitute of Environmental MedicineKarolinska InstitutetStockholmSweden
| | - Erika J Laukka
- Aging Research CenterDepartment of NeurobiologyCare Sciences and SocietyKarolinska Institutet and Stockholm UniversityStockholmSweden
- Stockholm Gerontology Research CentreStockholmSweden
| | - Tom Bellander
- Unit of EpidemiologyInstitute of Environmental MedicineKarolinska InstitutetStockholmSweden
| | - Laura Fratiglioni
- Aging Research CenterDepartment of NeurobiologyCare Sciences and SocietyKarolinska Institutet and Stockholm UniversityStockholmSweden
- Stockholm Gerontology Research CentreStockholmSweden
| | - Chengxuan Qiu
- Aging Research CenterDepartment of NeurobiologyCare Sciences and SocietyKarolinska Institutet and Stockholm UniversityStockholmSweden
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Sinclair D, Canty AJ, Ziebell JM, Woodhouse A, Collins JM, Perry S, Roccati E, Kuruvilla M, Leung J, Atkinson R, Vickers JC, Cook AL, King AE. Experimental laboratory models as tools for understanding modifiable dementia risk. Alzheimers Dement 2024; 20:4260-4289. [PMID: 38687209 PMCID: PMC11180874 DOI: 10.1002/alz.13834] [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: 12/13/2023] [Revised: 02/29/2024] [Accepted: 03/18/2024] [Indexed: 05/02/2024]
Abstract
Experimental laboratory research has an important role to play in dementia prevention. Mechanisms underlying modifiable risk factors for dementia are promising targets for dementia prevention but are difficult to investigate in human populations due to technological constraints and confounds. Therefore, controlled laboratory experiments in models such as transgenic rodents, invertebrates and in vitro cultured cells are increasingly used to investigate dementia risk factors and test strategies which target them to prevent dementia. This review provides an overview of experimental research into 15 established and putative modifiable dementia risk factors: less early-life education, hearing loss, depression, social isolation, life stress, hypertension, obesity, diabetes, physical inactivity, heavy alcohol use, smoking, air pollution, anesthetic exposure, traumatic brain injury, and disordered sleep. It explores how experimental models have been, and can be, used to address questions about modifiable dementia risk and prevention that cannot readily be addressed in human studies. HIGHLIGHTS: Modifiable dementia risk factors are promising targets for dementia prevention. Interrogation of mechanisms underlying dementia risk is difficult in human populations. Studies using diverse experimental models are revealing modifiable dementia risk mechanisms. We review experimental research into 15 modifiable dementia risk factors. Laboratory science can contribute uniquely to dementia prevention.
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Affiliation(s)
- Duncan Sinclair
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
| | - Alison J. Canty
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
- Global Brain Health Institute, Trinity CollegeDublinIreland
| | - Jenna M. Ziebell
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
| | - Adele Woodhouse
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
| | - Jessica M. Collins
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
| | - Sharn Perry
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
| | - Eddy Roccati
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
| | - Maneesh Kuruvilla
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
| | - Jacqueline Leung
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
| | - Rachel Atkinson
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
| | - James C. Vickers
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
| | - Anthony L. Cook
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
| | - Anna E. King
- Wicking Dementia Research and Education Centre, University of TasmaniaHobartTasmaniaAustralia
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Ksinan AJ, Dalecká A, Court T, Pikhart H, Bobák M. Pulmonary function and trajectories of cognitive decline in aging population. Exp Gerontol 2024; 189:112386. [PMID: 38428543 DOI: 10.1016/j.exger.2024.112386] [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: 11/17/2023] [Revised: 02/21/2024] [Accepted: 02/23/2024] [Indexed: 03/03/2024]
Abstract
BACKGROUND The number of older people with cognitive impairment is increasing worldwide. Impaired lung function might be associated with cognitive decline in older age; however, results from large longitudinal studies are lacking. In this study, we examined the longitudinal associations between pulmonary function and the trajectories of cognitive decline using prospective population-based SHARE data from 14 countries. METHODS The analytic sample included N = 32,049 older adults (Mean age at baseline = 64.76 years). The dependent variable was cognitive performance, measured repeatedly across six waves in three domains: verbal fluency, memory, and numeracy. The main predictor of interest was peak expiratory flow (PEF). The data were analyzed in a multilevel accelerated longitudinal design, with models adjusted for a variety of covariates. RESULTS A lower PEF score was associated with lower cognitive performance for each domain as well as a lower global cognitive score. These associations remained statistically significant after adjusting for all covariates Q4 vs Q1 verbal fluency: unstandardized coefficient B = -3.15; numeracy: B = -0.52; memory: B = -0.64; global cognitive score B = -2.65, all p < .001). However, the PEF score was not found to be associated with the rate of decline for either of the cognitive outcomes. CONCLUSIONS In this large multi-national longitudinal study, the PEF score was independently associated with lower levels of cognitive functions, but it did not predict a future decline. The results suggest that pre-existing differences in lung functions are responsible for variability in cognitive functions and that these differences remained stable across aging.
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Affiliation(s)
- Albert J Ksinan
- RECETOX, Faculty of Science, Masaryk University, Brno, Czech Republic.
| | - Andrea Dalecká
- RECETOX, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Tatyana Court
- RECETOX, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Hynek Pikhart
- RECETOX, Faculty of Science, Masaryk University, Brno, Czech Republic; Department of Epidemiology & Public Health, University College London, Institute of Epidemiology and Health Care, London, UK
| | - Martin Bobák
- RECETOX, Faculty of Science, Masaryk University, Brno, Czech Republic; Department of Epidemiology & Public Health, University College London, Institute of Epidemiology and Health Care, London, UK
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Wu YP, Li CJ, Xia XX, Xu WP, Jing P. Nutrition intake modifies the association between pulmonary function and cognitive performance among elderly Americans from NHANES 2011-2012. Eur Geriatr Med 2024; 15:553-559. [PMID: 38227111 DOI: 10.1007/s41999-023-00921-8] [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: 04/24/2023] [Accepted: 12/12/2023] [Indexed: 01/17/2024]
Abstract
PURPOSE Nutrition intake is one of the modifiable risk factors for cognitive decline. Whether energy and protein intakes alter the association between pulmonary function (PF) and cognition has not been studied. METHODS We made use of information from the U.S. National Health and Nutrition Examination Survey (NHANES) 2011-2012. PF measures, including forced expiratory volume in one second (FEV1), forced vital capacity (FVC), and peak expiratory flow (PEF), were calculated, whereas cognitive function was assessed through four tests: the Immediate Recall test (IRT), the Delayed Recall test (DRT), the Animal Fluency test (AFT) and the Digit Symbol Substitution test (DSST). Energy and protein intakes were measured using the 24-h dietary recall method. Weighted generalized linear regression was performed upon adjustment for covariates. Further interaction analyses were conducted to investigate the effect of energy and protein intakes on the association between PF and cognition. RESULTS We finally included 803 participants aged ≥ 60 years (54.4% female, weighted value). After adjusting for covariates, multiple measures (including FEV1, FVC, PEF, and composite PF) were all positively associated with better global cognition and the DSST score (P < 0.05). A stronger positive association between the DSST score and FEV1 (P for interaction = 0.001), FVC (P for interaction = 0.004), PEF (P for interaction = 0.003), and composite PF (P for interaction = 0.001) in lower energy intake. Similar results were observed in lower protein intake (all P for interaction < 0.05). CONCLUSION Higher PF was independently associated with improved specific components of cognitive function (i.e., the DSST score). The positive association between PF and the DSST score was stronger in individuals with lower energy and protein intakes.
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Affiliation(s)
- Yan-Ping Wu
- Department of Neurology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Chang-Jun Li
- Department of Neurology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Xian-Xin Xia
- Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430030, People's Republic of China
| | - Wu-Ping Xu
- Department of Neurology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Ping Jing
- Department of Neurology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
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Annaka H, Nomura T, Moriyama H. Predictors of 2-Year Mortality in Patients Receiving Long-Term Oxygen Therapy: A Prospective Observational Study. J Palliat Med 2024; 27:495-502. [PMID: 38032873 DOI: 10.1089/jpm.2023.0505] [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: 12/02/2023] Open
Abstract
Background: Patients receiving long-term oxygen therapy are in a state of progressive respiratory dysfunction and have high mortality. However, the predictors of mortality in these patients have not yet been established. Objectives: This prospective observational study aimed to identify the predictors of two-year mortality in patients receiving long-term oxygen therapy. Design, Setting/Subjects: This two-year prospective observational study included 96 patients who received long-term oxygen therapy in the outpatient department of the National Hospital Organization Nishiniigata Chuo Hospital in Japan. Measurements: The updated Charlson Comorbidity Index, body mass index, handgrip strength, modified British Medical Research Council scale (mMRC), Barthel Index (BI), and Montreal Cognitive Assessment (MoCA) were collected in 2019 as a baseline. Outcome was defined as mortality due to chronic respiratory disease during the two-year follow-up period, and predictors were estimated using age- and sex-adjusted Cox proportional hazards model. Results: The 83 patients that were followed up, 30 (36%) died. The Cox proportional hazards model estimated handgrip strength (adjusted hazard ratio [HR]: 0.89; 95% confidence interval [CI]: 0.84-0.94; p < 0.01; Wald: 14.38.), mMRC (adjusted HR: 1.96; 95% CI: 1.36-2.83; p < 0.01; Wald: 13.16.), BI (adjusted HR: 0.95; 95% CI: 0.93-0.98; p < 0.01; Wald: 17.07.), and MoCA (adjusted HR: 2.17; 95% CI: 1.31-3.59; p < 0.01; Wald: 9.06) as predictors. Conclusions: This study indicated that handgrip strength, dyspnea, activities of daily living, and cognitive function were predictors of two-year mortality in patients receiving long-term oxygen therapy.
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Affiliation(s)
- Hiroki Annaka
- Department of Occupational Therapy, Faculty of Rehabilitation, Niigata University of Health and Welfare, Niigata, Japan
| | - Tomonori Nomura
- Department of Occupational Therapy, Faculty of Rehabilitation, Niigata University of Health and Welfare, Niigata, Japan
| | - Hiroshi Moriyama
- Department of Respiratory Medicine, National Hospital Organization, Nishiniigata Chuo Hospital, Niigata, Japan
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Annaka H, Nomura T, Moriyama H. Cognitive Function in Patients With Mild Idiopathic Pulmonary Fibrosis: A Case-Control Pilot Study. Occup Ther Health Care 2024:1-15. [PMID: 38440879 DOI: 10.1080/07380577.2024.2324256] [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: 01/03/2024] [Accepted: 02/24/2024] [Indexed: 03/06/2024]
Abstract
This case-control study examined cognitive function in patients with mild idiopathic pulmonary fibrosis (IPF), in comparison with controls or moderate-to-severe IPF. Ten mild IPF, 10 moderate-to-severe IPF, and 16 controls were enrolled, and performance on seven different cognitive function tests was compared in each group. IPF showed decreased cognitive function compared to controls in verbal memory, cognitive flexibility and information processing speed. As the scores were lower even in mild IPF, this study suggests that cognitive function declines early in the disease process of IPF. Thus, occupational therapy for IPF should require an assessment of cognitive function and assistance appropriate to the client's function.
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Affiliation(s)
- Hiroki Annaka
- Department of Occupational Therapy, Niigata University of Health and Welfare, Niigata, Japan
| | - Tomonori Nomura
- Department of Occupational Therapy, Niigata University of Health and Welfare, Niigata, Japan
| | - Hiroshi Moriyama
- Department of Respiratory Medicine, National Hospital Organization, Nishiniigata Chuo Hospital, Niigata, Japan
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Wrzesień A, Andrzejewski K, Jampolska M, Kaczyńska K. Respiratory Dysfunction in Alzheimer's Disease-Consequence or Underlying Cause? Applying Animal Models to the Study of Respiratory Malfunctions. Int J Mol Sci 2024; 25:2327. [PMID: 38397004 PMCID: PMC10888758 DOI: 10.3390/ijms25042327] [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: 01/17/2024] [Revised: 02/09/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative brain disease that is the most common cause of dementia among the elderly. In addition to dementia, which is the loss of cognitive function, including thinking, remembering, and reasoning, and behavioral abilities, AD patients also experience respiratory disturbances. The most common respiratory problems observed in AD patients are pneumonia, shortness of breath, respiratory muscle weakness, and obstructive sleep apnea (OSA). The latter is considered an outcome of Alzheimer's disease and is suggested to be a causative factor. While this narrative review addresses the bidirectional relationship between obstructive sleep apnea and Alzheimer's disease and reports on existing studies describing the most common respiratory disorders found in patients with Alzheimer's disease, its main purpose is to review all currently available studies using animal models of Alzheimer's disease to study respiratory impairments. These studies on animal models of AD are few in number but are crucial for establishing mechanisms, causation, implementing potential therapies for respiratory disorders, and ultimately applying these findings to clinical practice. This review summarizes what is already known in the context of research on respiratory disorders in animal models, while pointing out directions for future research.
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Affiliation(s)
| | | | | | - Katarzyna Kaczyńska
- Department of Respiration Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland; (A.W.); (K.A.); (M.J.)
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Shrestha S, Zhu X, Sullivan KJ, Simino J, Lutsey PL, Gottesman RF, London SJ, Griswold ME, Mosley TH. Lung Function and Brain MRI Outcomes in the Atherosclerosis Risk in Communities Neurocognitive Study. J Alzheimers Dis 2024; 100:297-308. [PMID: 38848187 PMCID: PMC11223445 DOI: 10.3233/jad-240162] [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] [Indexed: 06/09/2024]
Abstract
Background Brain imaging studies may provide etiologic insight into observed links between lung function and dementia and stroke. Objective We evaluated associations of lung function measures with brain MRI markers of vascular and neurodegenerative disease in the ARIC Neurocognitive Study, as few studies have examined the associations. Methods Lung function was measured at participants' midlife in 1990-1992 (mean age = 56±5 years) and later-life in 2011-2013 (mean age = 76±5 years), and brain MRI was performed in 2011-2013. Linear regression models were used to examine the associations of lung function with brain and white matter hyperintensity (WMH) volumes, and logistic regression models were used for cerebral infarcts and microbleeds, adjusting for potential confounders. Results In cross-sectional analysis (i.e., examining later-life lung function and MRI markers, n = 1,223), higher forced-expiratory volume in one second (FEV1) and forced vital capacity (FVC) were associated with larger brain and lower WMH volumes [e.g., 8.62 (95% CI:2.54-14.71) cm3 greater total brain volume per one-liter higher FEV1]. No association was seen with microbleeds in the overall sample, but higher FVC was associated with lower odds of microbleeds in never-smokers and higher odds in ever-smokers. In the cross-temporal analysis (i.e., associations with midlife lung function, n = 1,787), higher FVC levels were significantly associated with lower later-life brain volumes. Conclusions Our results support modest associations of better lung function with less neurodegenerative and cerebrovascular pathology, although findings for microbleeds were unexpected in ever-smokers.
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Affiliation(s)
- Srishti Shrestha
- The Memory Impairment and Neurodegenerative Dementia Center, University of Mississippi Medical Center, Jackson, MS
| | - Xiaoqian Zhu
- The Memory Impairment and Neurodegenerative Dementia Center, University of Mississippi Medical Center, Jackson, MS
| | - Kevin J. Sullivan
- The Memory Impairment and Neurodegenerative Dementia Center, University of Mississippi Medical Center, Jackson, MS
| | - Jeannette Simino
- The Memory Impairment and Neurodegenerative Dementia Center, University of Mississippi Medical Center, Jackson, MS
- Department of Data Science, John D. Bower School of Population Health, University of Mississippi Medical Center, Jackson, MS
| | - Pamela L. Lutsey
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN
| | - Rebecca F. Gottesman
- Stroke Branch, National Institute of Neurological Disorders and Stroke Intramural Research Program, Bethesda, MD
| | - Stephanie J. London
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - Michael E. Griswold
- The Memory Impairment and Neurodegenerative Dementia Center, University of Mississippi Medical Center, Jackson, MS
| | - Thomas H. Mosley
- The Memory Impairment and Neurodegenerative Dementia Center, University of Mississippi Medical Center, Jackson, MS
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Murrieta-Álvarez I, A Fernández-Gutiérrez J, A Pérez C, León-Peña AA, Reyes-Cisneros ÓA, Benítez-Salazar JM, Sánchez-Bonilla D, Olivares-Gazca JC, Fernández-Lara D, Pérez-Padilla R, Ruiz-Delgado GJ, Ruiz-Argüelles GJ. Impaired lung function in multiple sclerosis: a single-center observational study in 371 persons. Neurol Sci 2023; 44:4429-4439. [PMID: 37410269 DOI: 10.1007/s10072-023-06914-6] [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: 12/05/2022] [Accepted: 06/15/2023] [Indexed: 07/07/2023]
Abstract
INTRODUCTION Abnormal lung function in people with multiple sclerosis (PwMS) could be considered as the result of muscle weakness or MS-specific structural central nervous system (CNS) abnormalities as a precipitant factor for the worsening of motor impairment or cognitive symptoms. METHODS This is a cross-sectional observational study in PwMS. Forced spirometry was conducted, and normative metrics of forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), and the relation FEV1/FVC were calculated. Qualitative and quantitative brain magnetic resonance imaging (MRI) examinations were carried out. RESULTS A total of 371 PwMS were included in the study. Of those, 196 (53%) had RRMS, 92 (25%) SPMS, and 83 (22%) PPMS. Low FVC and FEV1 was present in 16 (8%), 16 (19%), and 23 (25%) of the patients in the RRMS, PPMS, and SPMS, respectively. PwMS with T2-FLAIR lesions involving the corpus callosum (CC) had a significantly higher frequency of abnormally low FVC and FEV1 (OR 3.62; 95% CI 1.33-9.83; p = 0.012) than patients without lesions in that region. This association remained significant in the RRMS group (OR 10.1; 95% CI 1.3-67.8; p 0.031) when the model excluded PPMS and SPMS. According to our study, for every increase of 1 z score of FVC, we observed an increase of 0.25 cm3 of hippocampal volume (β 0.25; 95% CI 0.03-0.47; p 0.023) and 0.43 cm3 of left hippocampus volume (β 0.43; 95% CI 0.16-0.71; p 0.002). CONCLUSIONS We observed an incremental prevalence of abnormally low pulmonary function tests that parallels a sequence from more early relapsing courses to long-standing progressive courses (RRMS to PPMS or SPMS).
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Affiliation(s)
- Iván Murrieta-Álvarez
- Clínica Ruiz, Centro de Hematología y Medicina Interna, Puebla, México
- Universidad Popular Autónoma del Estado de Puebla, Puebla, México
- Baylor College of Medicine, Houston, TX, USA
| | - José A Fernández-Gutiérrez
- Clínica Ruiz, Centro de Hematología y Medicina Interna, Puebla, México
- Universidad Popular Autónoma del Estado de Puebla, Puebla, México
| | | | | | - Óscar A Reyes-Cisneros
- Clínica Ruiz, Centro de Hematología y Medicina Interna, Puebla, México
- Universidad Anáhuac Puebla, Tlaxcalancingo, México
| | - José M Benítez-Salazar
- Universidad Popular Autónoma del Estado de Puebla, Puebla, México
- Houston Methodist Hospital, Houston, TX, USA
| | - Daniela Sánchez-Bonilla
- Clínica Ruiz, Centro de Hematología y Medicina Interna, Puebla, México
- Universidad Popular Autónoma del Estado de Puebla, Puebla, México
| | | | | | | | - Guillermo J Ruiz-Delgado
- Clínica Ruiz, Centro de Hematología y Medicina Interna, Puebla, México
- Universidad Popular Autónoma del Estado de Puebla, Puebla, México
- Laboratorios Ruiz SYNLAB, Puebla, México
| | - Guillermo J Ruiz-Argüelles
- Clínica Ruiz, Centro de Hematología y Medicina Interna, Puebla, México.
- Universidad Popular Autónoma del Estado de Puebla, Puebla, México.
- Laboratorios Ruiz SYNLAB, Puebla, México.
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Shrestha S, Zhu X, London SJ, Sullivan KJ, Lutsey PL, Windham BG, Griswold ME, Mosley Jr TH. Association of Lung Function With Cognitive Decline and Incident Dementia in the Atherosclerosis Risk in Communities Study. Am J Epidemiol 2023; 192:1637-1646. [PMID: 37392093 PMCID: PMC11292409 DOI: 10.1093/aje/kwad140] [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: 02/28/2022] [Revised: 03/28/2023] [Accepted: 06/13/2023] [Indexed: 07/02/2023] Open
Abstract
We examined the associations between lung function and incident dementia and cognitive decline in 12,688 participants in the ARIC Study who provided lung function measurements in 1990-1992. Cognitive tests were administered up to 7 times, and dementia was ascertained through 2019. We used shared parameter models to jointly fit proportional hazard models and linear mixed-effect models to estimate lung-function-associated dementia rate and cognitive change, respectively. Higher forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC) were associated with reduced dementia (n = 2,452 persons developed dementia); hazard ratios per 1-L increase in FEV1 and FVC were 0.79 (95% confidence interval (CI): 0.71, 0.89) and 0.81 (95% CI: 0.74, 0.89), respectively. Each 1-L increase in FEV1 and FVC was associated with a 0.08-standard deviation (SD) (95% CI: 0.05, 0.12) and a 0.05-SD (95% CI: 0.02, 0.07) attenuation of 30-year cognitive decline, respectively. A 1% increase in FEV1/FVC ratio was associated with 0.008-SD (95% CI: 0.004, 0.012) less cognitive decline. We observed statistical interaction between FEV1 and FVC, suggesting that cognitive declines depended on values of specific FEV1 and FVC (as compared with FEV1, FVC, or FEV1/FVC ratio models that suggested linear incremental associations). Our findings may have important implications for reducing the burden of cognitive decline that is attributable to environmental exposures and associated lung function impairment.
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Affiliation(s)
- Srishti Shrestha
- Correspondence to Dr. Srishti Shrestha, Memory Impairment and Neurodegenerative Dementia (MIND) Center, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216 (e-mail: )
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Annaka H, Nomura T, Moriyama H. Association between cognitive decline and activities of daily living decline in patients undergoing long-term oxygen therapy: a prospective observational pilot study. Disabil Rehabil 2023; 45:3493-3499. [PMID: 36171683 DOI: 10.1080/09638288.2022.2127934] [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: 04/16/2022] [Accepted: 09/18/2022] [Indexed: 11/03/2022]
Abstract
PURPOSE Patients undergoing long-term oxygen therapy (LTOT) are predisposed to progressive cognitive decline; however, the association between cognitive decline progression and activities of daily living (ADL) decline has not been described. We aimed to describe the association between cognitive decline progression and ADL decline in patients undergoing LTOT. MATERIALS AND METHODS In this prospective observational pilot study, data were collected at baseline and 1-year following the ambulatory recruitment of patients in the Department of Respiratory Medicine at the National Hospital Organization Nishiniigata Chuo Hospital. We recruited 96 patients with chronic respiratory disease undergoing LTOT, and 55 patients who completed a 1-year follow-up were finally included. RESULTS Multivariate logistic regression analysis revealed that Montreal Cognitive Assessment score reduction (a measure of cognitive decline) was associated with Barthel index score reduction (a measure of ADL) at 1-year follow-up (odds ratio: 3.98; 95% confidence interval: 1.16 - 13.69; p = 0.02). CONCLUSION A progression of cognitive decline in patients undergoing LTOT may affect ADL decline. An early detection of cognitive decline in patients undergoing LTOT is essential for ADL maintenance in rehabilitation practice.IMPLICATIONS FOR REHABILITATIONPatients undergoing long-term oxygen therapy (LTOT) present with progressive cognitive decline.Cognitive decline progression is associated with a decline in activities of daily living in patients undergoing LTOT.A periodic cognitive assessment is important in rehabilitation practice for the early detection of progressive cognitive decline in patients undergoing LTOT.
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Affiliation(s)
- Hiroki Annaka
- Department of Occupational Therapy, National Hospital Organization Nishiniigata Chuo Hospital, Niigata, Niigata, Japan
- Graduate School, Niigata University of Health and Welfare, Niigata, Niigata, Japan
| | - Tomonori Nomura
- Department of Occupational Therapy, Faculty of Rehabilitation, Niigata University of Health and Welfare, Niigata, Niigata, Japan
| | - Hiroshi Moriyama
- Respiratory Center, National Hospital Organization Nishiniigata Chuo Hospital, Niigata, Niigata, Japan
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Wang Y, Xu H, Geng Z, Geng G, Zhang F. Dementia and the history of disease in older adults in community. BMC Public Health 2023; 23:1555. [PMID: 37582737 PMCID: PMC10428616 DOI: 10.1186/s12889-023-16494-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: 12/26/2022] [Accepted: 08/09/2023] [Indexed: 08/17/2023] Open
Abstract
INTRODUCTION Many studies have revealed the effect of medical history on dementia. The aim of this study was to explore the relationship between the history of disease and onset of dementia. METHODS This was a multi-center, cross-sectional study, with 2595 older adults enrolled. The onset of dementia was evaluated with Revised Hasegawa Dementia Scale (HDS-R). The diagnosed diseases after the age of 40 of the participants were investigated, including respiratory system diseases, digestive system diseases, cardiovascular diseases, endocrine disorders, genitourinary system diseases, nervous system disease, sensory system diseases, dental/oral diseases, bone/joint diseases and mental illnesses. RESULTS Data of 2458 older adults were analyzed. Univariate analysis showed that diabetes, thyroid disease, mental illness, hearing loss, stroke, dental/oral disease, Denture use, fracture/osteoporosis, kidney disease and number of diseases were risk factors for dementia. After controlling for demographic sociological variables, diabetes, dental/oral disease, and denture use were independent risk factors for dementia. Thyroid disease (P = 0.313), mental illnesses (P = 0.067), hearing loss (P = 0.595), stroke (P = 0.538), fractures/osteoporosis (P = 0.069), kidney disease (P = 0.168) were no longer significant to dementia. CONCLUSION Diabetes, dental/oral disease and denture use were main risk factors for dementia.
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Affiliation(s)
- Yuan Wang
- Medical College of Nantong University, 19 QiXiu Road, Nantong City, Jiangsu Province, China
| | - Honglian Xu
- Nantong North Rehabilitation Hospital, Nantong City, Jiangsu Province, China
| | - Zihan Geng
- Medical College of Nantong University, 19 QiXiu Road, Nantong City, Jiangsu Province, China
| | - Guiling Geng
- Medical College of Nantong University, 19 QiXiu Road, Nantong City, Jiangsu Province, China
| | - Feng Zhang
- Medical College of Nantong University, 19 QiXiu Road, Nantong City, Jiangsu Province, China.
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Son SH, Ahn JH, Shin KC, Kim HW, Kong E. Brain FDG PET for visualizing the relation between impaired lung function and cognitive decline in lung cancer: a preliminary study. Nucl Med Commun 2023; 44:488-494. [PMID: 36942535 DOI: 10.1097/mnm.0000000000001686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
OBJECTIVE Impaired lung function is associated with an increased risk for cognitive decline. F-18 fluorodeoxyglucose (FDG) PET is a well-known neurodegenerative biomarker for dementia. We investigated the association between lung and brain function using FDG PET in patients with lung cancer. METHODS A random sub-sample of 102 patients with lung cancer and without a self-reported history of neuropsychiatric disorders were recruited and underwent both lung function tests and FDG PET scans before treatment. Lung function was analyzed as the percentage predicted value (% pred) of forced vital capacity (FVC) and forced expiratory volume in the first second (FEV1). FDG uptake was measured as standardized uptake values (SUVs) in the frontal, parietal, temporal, and occipital cortices and cognition-related regions. Regional SUV ratios (SUVRs) were calculated by dividing the SUV in each region by the whole-brain SUV and were then evaluated against lung function indices and clinical variables. RESULTS After excluding five patients with brain metastases, 97 patients were included in the final analysis (mean age, 67.7 ± 10.3 years). Mean FVC and mean FEV1 were 80.0% ± 15.4% and 77.6% ± 17.8%, respectively. Both FVC and FEV1 were positively correlated with SUVRs in all brain regions after adjusting the data for clinical variables. The degree of decrease in SUVRs related to lung function was not significantly different between cognition-related regions and other regions. CONCLUSION Impaired lung function was associated with decreased glucose metabolism in all regions of the brain, indicating that cognitive decline related to decreased glucose metabolism may be due to reduced perfusion.
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Affiliation(s)
| | - June Hong Ahn
- Department of Internal Medicine, Regional Center for Respiratory Disease, Yeungnam University Hospital, Yeungnam University College of Medicine
| | - Kyeong Cheol Shin
- Department of Internal Medicine, Regional Center for Respiratory Disease, Yeungnam University Hospital, Yeungnam University College of Medicine
| | - Hae Won Kim
- Department of Nuclear Medicine, Keimyung University Dongsan Hospital, Daegu, South Korea
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Stephan Y, Sutin AR, Luchetti M, Aschwanden D, Cabibel V, Terracciano A. Measures of physical performance as mediators between personality and cognition in two prospective studies. Arch Gerontol Geriatr 2023; 107:104902. [PMID: 36592492 PMCID: PMC9975024 DOI: 10.1016/j.archger.2022.104902] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/02/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022]
Abstract
Few studies have examined the pathways linking personality to cognition. This study aimed to examine whether measures of physical performance (gait speed, peak expiratory flow (PEF), and grip strength) mediated the association between five-factor model personality traits and cognition (memory performance, subjective memory, and informant-rated cognition). Participants were aged 57 to 95 years from the Health and Retirement Study (HRS, N = 4,109) and the English Longitudinal Study of ageing (ELSA, N = 3,584). In HRS, personality and demographic factors were assessed in 2008/2010, physical performance in 2012/2014, and memory performance and subjective memory in 2016/2018. Informant-rated cognition was obtained in 2016 for an HRS subsample. In ELSA, personality and demographic factors were assessed in 2010/2011, physical performance in 2012/2013, and objective and subjective memory in 2014/2015. Informant-rated cognition was obtained in 2018 for an ELSA subsample. With a few exceptions, replicable patterns of mediation were found across HRS and ELSA. Slower gait speed partially mediated the association between higher neuroticism, lower conscientiousness and worse scores on all three cognitive measures (memory performance, subjective memory, and informant-rated cognition). Slower gait also partially mediated the association between openness and both objective and subjective memory. There was less replicable evidence for a mediating role of PEF and grip strength. The present study advances knowledge on the pathways linking personality to cognition in older adults and supports the hypothesis that personality associations with better physical function can help support healthy cognitive aging.
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Affiliation(s)
- Yannick Stephan
- Euromov, Université Montpellier, UFRSTAPS, 700, Avenue du Pic St Loup, Montpellier 34090, France.
| | - Angelina R Sutin
- Department of Behavioral Sciences and Social Medicine, College of Medicine, Florida State University, USA
| | - Martina Luchetti
- Department of Behavioral Sciences and Social Medicine, College of Medicine, Florida State University, USA
| | - Damaris Aschwanden
- Department of Geriatrics, College of Medicine, Florida State University, USA
| | - Vincent Cabibel
- UNICAEN, INSERM, COMETE, GIP Cyceron, Normandie Université, Caen, France
| | - Antonio Terracciano
- Department of Geriatrics, College of Medicine, Florida State University, USA
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Ma YH, Shen LX, Li YZ, Leng Y, Yang L, Chen SD, He XY, Zhang YR, Chen RJ, Feng JF, Tan L, Dong Q, Suckling J, David Smith A, Cheng W, Yu JT. Lung function and risk of incident dementia: A prospective cohort study of 431,834 individuals. Brain Behav Immun 2023; 109:321-330. [PMID: 36796705 DOI: 10.1016/j.bbi.2023.02.009] [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: 09/11/2022] [Revised: 01/26/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND Whether lung function prospectively affects cognitive brain health independent of their overlapping factors remains largely unknown. This study aimed to investigate the longitudinal association between decreased lung function and cognitive brain health and to explore underlying biological and brain structural mechanisms. METHODS This population-based cohort included 43,1834 non-demented participants with spirometry from the UK Biobank. Cox proportional hazard models were fitted to estimate the risk of incident dementia for individuals with low lung function. Mediation models were regressed to explore the underlying mechanisms driven by inflammatory markers, oxygen-carrying indices, metabolites, and brain structures. FINDINGS During a follow-up of 3,736,181 person-years (mean follow-up 8.65 years), 5,622 participants (1.30 %) developed all-cause dementia, which consisted of 2,511 Alzheimer's dementia (AD) and 1,308 Vascular Dementia (VD) cases. Per unit decrease in lung function measure was each associated with increased risk for all-cause dementia (forced expiratory volume in 1 s [liter]: hazard ratio [HR, 95 %CI], 1.24 [1.14-1.34], P = 1.10 × 10-07; forced vital capacity [liter]: 1.16 [1.08-1.24], P = 2.04 × 10-05; peak expiratory flow [liter/min]: 1.0013 [1.0010-1.0017], P = 2.73 × 10-13). Low lung function generated similar hazard estimates for AD and VD risks. As underlying biological mechanisms, systematic inflammatory markers, oxygen-carrying indices, and specific metabolites mediated the effects of lung function on dementia risks. Besides, brain grey and white matter patterns mostly affected in dementia were substantially changed with lung function. INTERPRETATION Life-course risk for incident dementia was modulated by individual lung function. Maintaining optimal lung function is useful for healthy aging and dementia prevention.
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Affiliation(s)
- Ya-Hui Ma
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China; Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, National Center for Neurological Disorders, Shanghai, China
| | - Ling-Xiao Shen
- Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, National Center for Neurological Disorders, Shanghai, China
| | - Yu-Zhu Li
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
| | - Yue Leng
- Department of Psychiatry, University of California, San Francisco, CA, USA
| | - Liu Yang
- Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, National Center for Neurological Disorders, Shanghai, China
| | - Shi-Dong Chen
- Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, National Center for Neurological Disorders, Shanghai, China
| | - Xiao-Yu He
- Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, National Center for Neurological Disorders, Shanghai, China
| | - Ya-Ru Zhang
- Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, National Center for Neurological Disorders, Shanghai, China
| | - Ren-Jie Chen
- School of Public Health, Fudan University, Shanghai, China
| | - Jian-Feng Feng
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China; Department of Computer Science, University of Warwick, Coventry, United Kingdom; School of Mathematical Sciences, Fudan University, Shanghai, China
| | - Lan Tan
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Qiang Dong
- Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, National Center for Neurological Disorders, Shanghai, China
| | - John Suckling
- Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
| | - A David Smith
- Department of Pharmacology, University of Oxford, Oxford OX1 3QT, United Kingdom
| | - Wei Cheng
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China
| | - Jin-Tai Yu
- Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, National Center for Neurological Disorders, Shanghai, China.
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Zhang Y, Ebelt ST, Shi L, Scovronick NC, D'Souza RR, Steenland K, Chang HH. Short-term associations between warm-season ambient temperature and emergency department visits for Alzheimer's disease and related dementia in five US states. ENVIRONMENTAL RESEARCH 2023; 220:115176. [PMID: 36584844 PMCID: PMC9898200 DOI: 10.1016/j.envres.2022.115176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 11/30/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Ambient temperatures are projected to increase in the future due to climate change. Alzheimer's disease (AD) and Alzheimer's disease-related dementia (ADRD) affect millions of individuals and represent substantial health burdens in the US. High temperature may be a risk factor for AD/ADRD outcomes with several recent studies reporting associations between temperature and AD mortality. However, the link between heat and AD morbidity is poorly understood. METHODS We examined short-term associations between warm-season daily ambient temperature and AD/ADRD emergency department (ED) visits for individuals aged 45 years or above during the warm season (May to October) for up to 14 years (2005-2018) in five US states: California, Missouri, North Carolina, New Jersey, and New York. Daily ZIP code-level maximum, average and minimum temperature exposures were derived from 1 km gridded Daymet products. Associations are assessed using a time-stratified case-crossover design using conditional logistic regression. RESULTS We found consistent positive short-term effects of ambient temperature among 3.4 million AD/ADRD ED visits across five states. An increase of the 3-day cumulative temperature exposure of daily average temperature from the 50th to the 95th percentile was associated with a pooled odds ratio of 1.042 (95% CI: 1.034, 1.051) for AD/ADRD ED visits. We observed evidence of the association being stronger for patients 65-74 years of age and for ED visits that led to hospital admissions. Temperature associations were also stronger among AD/ADRD ED visits compared to ED visits for other reasons, particularly among patients aged 65-74 years. CONCLUSION People with AD/ADRD may represent a vulnerable population affected by short-term exposure to high temperature. Our results support the development of targeted strategies to reduce heat-related AD/ADRD morbidity in the context of global warming.
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Affiliation(s)
- Yuzi Zhang
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, USA.
| | - Stefanie T Ebelt
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30322, USA
| | - Liuhua Shi
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30322, USA
| | - Noah C Scovronick
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30322, USA
| | - Rohan R D'Souza
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Kyle Steenland
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, 30322, USA
| | - Howard H Chang
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, USA
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21
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Stephan Y, Sutin AR, Luchetti M, Aschwanden D, Caille P, Terracciano A. Personality associations with lung function and dyspnea: Evidence from six studies. Respir Med 2023; 208:107127. [PMID: 36693440 PMCID: PMC9975026 DOI: 10.1016/j.rmed.2023.107127] [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: 11/02/2022] [Revised: 01/12/2023] [Accepted: 01/20/2023] [Indexed: 01/22/2023]
Abstract
OBJECTIVE The present study examined the association between Five Factor Model personality traits and lung function and dyspnea. METHODS Participants were middle aged and older adults aged 34-103 years old (N > 25,000) from the Midlife in the United States Study (MIDUS), the Health and Retirement Study (HRS), the English Longitudinal Study of Ageing (ELSA), the National Health and Aging Trends Survey (NHATS), and the Wisconsin Longitudinal Study graduate (WLSG) and sibling (WLSS) samples. Data on peak expiratory flow (PEF), dyspnea, personality traits, smoking, physical activity, body mass index (BMI), emotional/psychiatric problems, and demographic factors were obtained in each sample. RESULTS A meta-analysis indicated that higher neuroticism was related to lower PEF, higher risk of PEF less than 80% of predicted value, and higher risk of dyspnea. In contrast, higher extraversion and conscientiousness were associated with higher PEF, lower likelihood of PEF lower than 80% of the predicted value, and lower risk of dyspnea. Higher openness was related to higher PEF and lower risk of PEF less than 80%, whereas agreeableness was related to higher PEF and lower risk of dyspnea. Smoking, physical activity, BMI and emotional/psychiatric problems partially accounted for these associations. There was little evidence that lung disease moderated the association between personality and PEF and dyspnea. CONCLUSIONS Across cohorts, this study found replicable evidence that personality is associated with lung function and associated symptomatology.
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Affiliation(s)
| | - Angelina R Sutin
- Department of Behavioral Sciences and Social Medicine, College of Medicine, Florida State University, USA
| | - Martina Luchetti
- Department of Behavioral Sciences and Social Medicine, College of Medicine, Florida State University, USA
| | - Damaris Aschwanden
- Department of Geriatrics, College of Medicine, Florida State University, USA
| | | | - Antonio Terracciano
- Department of Geriatrics, College of Medicine, Florida State University, USA
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22
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Li QY, Li XM, Hu HY, Ma YH, Ou YN, Wang AY, Tan L, Yu JT. Associations of Lung Function Decline with Risks of Cognitive Impairment and Dementia: A Meta-Analysis and Systematic Review. J Alzheimers Dis 2023; 92:853-873. [PMID: 36806509 DOI: 10.3233/jad-221136] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
BACKGROUND There are controversies surrounding the effects of lung function decline on cognitive impairment and dementia. OBJECTIVE We conducted a meta-analysis and systematic review to explore the associations of lung function decline with the risks of cognitive impairment and dementia. METHODS The PubMed, EMBASE, and the Cochrane Library were searched to identify prospective studies published from database inception through January 10, 2023. We pooled relative risk (RR) and 95% confidence intervals (CI) using random-effects models. The Egger test, funnel plots, meta-regression, sensitivity, and subgroup analyses were conducted to detect publication bias and investigate the source of heterogeneity. RESULTS Thirty-three articles with a total of 8,816,992 participants were subjected to meta-analysis. Poorer pulmonary function was associated with an increased risk of dementia (FEV: RR = 1.25 [95% CI, 1.17-1.33]; FVC: RR = 1.40 [95% CI, 1.16-1.69]; PEF: RR = 1.84 [95% CI, 1.37-2.46]). The results of the subgroup analyses were similar to the primary results. Individuals with lung diseases had a higher combined risk of dementia and cognitive impairment (RR = 1.39 [95% CI, 1.20-1.61]). Lung disease conferred an elevated risk of cognitive impairment (RR = 1.37 [95% CI, 1.14-1.65]). The relationship between lung disease and an increased risk of dementia was only shown in total study participants (RR = 1.32 [95% CI, 1.11-1.57]), but not in the participants with Alzheimer's disease (RR = 1.39 [95% CI, 1.00-1.93]) or vascular dementia (RR = 2.11 [95% CI, 0.57-7.83]). CONCLUSION Lung function decline was significantly associated with higher risks of cognitive impairment and dementia. These findings might provide implications for the prevention of cognitive disorders and the promotion of brain health.
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Affiliation(s)
- Qiong-Yao Li
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Xue-Mei Li
- Department of Outpatient, Qingdao Municipal Hospital, Qingdao University, China
| | - He-Ying Hu
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Ya-Hui Ma
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Ya-Nan Ou
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - An-Yi Wang
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Lan Tan
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Jin-Tai Yu
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
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23
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Takayama A, Yoshioka T, Nagamine T. Impact of beta blockers on resting respiratory rate in older adults: A cross-sectional study. Pulm Pharmacol Ther 2023; 78:102186. [PMID: 36603740 DOI: 10.1016/j.pupt.2022.102186] [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: 03/02/2022] [Revised: 12/09/2022] [Accepted: 12/31/2022] [Indexed: 01/03/2023]
Abstract
[Purpose] Beta blockers, commonly prescribed for older adults, affect heart rates and blood pressure and may reduce respiratory rates, which are used to evaluate patient status and predict outcomes. However, limited clinical evidence is available on the impact of beta blockers on respiratory rates. This study aimed to investigate the impact of beta blockers on respiratory rates in older adults. [Methods] This cross-sectional study included patients aged ≥60 years who underwent an annual checkup. Patients were excluded if they had a diagnosis of severe heart failure, chronic obstructive pulmonary disease, interstitial pneumonitis, severe anemia, or neurodegenerative disease. Doubly robust estimation with inverse probability weighting was applied to estimate the mean differences between beta blocker users and non-users. The dose-response relationship between the administered beta blockers and respiratory rates was examined using multivariable regression models. [Results] Of 637 participants, 108 had received beta blockers regularly. The adjusted mean differences (95% confidence interval, CI) in respiratory rates, pulse rates, systolic blood pressure, and diastolic blood pressure between beta blocker users and non-users were 0.35 (-0.68 to 1.37), -3.56 (-6.34 to -0.78), -5.53 (-8.53 to -2.52), and -4.70 (-8.27 to -1.14), respectively. The adjusted mean differences (95% CI) in respiratory rates per 1 mg of a carvedilol equivalent dose in all beta blocker users, liposoluble beta blocker users, and carvedilol users were -0.10 (-0.18 to -0.02), -0.35 (-0.59 to -0.11), and -0.29 (-0.54 to -0.06), respectively. [Conclusions] Beta blockers may dose-dependently reduce the respiratory rates of older adults. However, in clinical settings, the impact of beta-blocker use or non-use on the respiratory rate may not occur at a clinically important level. Clinicians should note the potentially suppressive impact of beta blockers on respiratory rates according to the situation.
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Affiliation(s)
- Atsushi Takayama
- Center for Innovative Research for Communities and Clinical Excellence (CiRC2LE), Fukushima Medical University, Hikarigaoka 1, Fukushima City, Fukushima, 960-1295, Japan; Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Yoshida Konoecho, Sakyoku, Kyoto, 606-8501, Japan.
| | - Takashi Yoshioka
- Center for Innovative Research for Communities and Clinical Excellence (CiRC2LE), Fukushima Medical University, Hikarigaoka 1, Fukushima City, Fukushima, 960-1295, Japan; Department of Preventive Medicine and Public Health, School of Medicine, Keio University, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Takahiko Nagamine
- Department of Psychiatric Internal Medicine, Sunlight Brain Research Center, Hofu, Japan
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24
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Chang L, Chen SC, Lin PY, Lin HP, Liao LL, Chao HC, Chen MC, Chen MC, Tsao YY. A Pilot Study to Explore the Improvements in Pulmonary and Cognitive Functions With a Kazoo Intervention Among Middle-Aged and Older Adults in a Rural Community. Gerontol Geriatr Med 2023; 9:23337214231212268. [PMID: 38026090 PMCID: PMC10647995 DOI: 10.1177/23337214231212268] [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: 08/14/2023] [Revised: 10/09/2023] [Accepted: 10/17/2023] [Indexed: 12/01/2023] Open
Abstract
Dementia is a leading cause of disability and dependence in older adults worldwide. The aim of this pilot study was to explore the effect of using a kazoo instrument to improve pulmonary function and cognitive reserve in middle-aged and older adults in rural areas. This quasi-experimental study was conducted at two community care stations selected using cluster sampling from a rural district in southern Taiwan. We enrolled 85 middle-aged and older adults who were randomly assigned into self-learner and in-class groups. Both groups received a 6-month kazoo program. Cognitive and pulmonary function were compared before and after the intervention between the two groups. Significantly improved pulmonary function with regards to forced vital capacity (p < .05) was found in the self-learner group, and significantly improved maximum expiratory flow 75% (p < .001) was found in both groups. Mini-Mental State Examination scores significantly improved in the self-learner group (p < .01), but there was no significant change in the in-class group. Our results suggest that community care stations could consider implementing wind instrument programs such as a kazoo to enhance pulmonary function and cognitive reserve in middle-aged and older adults residing in rural areas.
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Affiliation(s)
- Luna Chang
- National Tainan Junior College of Nursing, Tainan, Taiwan. R.O.C
| | - Shu-Chuan Chen
- National Tainan Junior College of Nursing, Tainan, Taiwan. R.O.C
| | - Po-Yu Lin
- National Cheng Kung University Hospital, Tainan, Taiwan. R.O.C
| | - Hsiu-Pi Lin
- Chia Nan University of Pharmacy & Science, Tainan, Taiwan. R.O.C
| | - Li-Ling Liao
- Kaohsiung Medical University, Kaohsiung, Taiwan. R.O.C
| | - Hui-Chen Chao
- National Tainan Junior College of Nursing, Tainan, Taiwan. R.O.C
| | - Mei-Chun Chen
- National Tainan Junior College of Nursing, Tainan, Taiwan. R.O.C
| | - Mei-Chun Chen
- National Tainan Junior College of Nursing, Tainan, Taiwan. R.O.C
| | - Yi-Ying Tsao
- National Tainan Junior College of Nursing, Tainan, Taiwan. R.O.C
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25
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Suman PR, Souza LS, Kincheski GC, Melo HM, Machado MN, Carvalho GMC, De Felice FG, Zin WA, Ferreira ST. Lung inflammation induced by silica particles triggers hippocampal inflammation, synapse damage and memory impairment in mice. J Neuroinflammation 2022; 19:303. [PMID: 36527099 PMCID: PMC9756632 DOI: 10.1186/s12974-022-02662-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 12/01/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Considerable evidence indicates that a signaling crosstalk between the brain and periphery plays important roles in neurological disorders, and that both acute and chronic peripheral inflammation can produce brain changes leading to cognitive impairments. Recent clinical and epidemiological studies have revealed an increased risk of cognitive impairment and dementia in individuals with impaired pulmonary function. However, the mechanistic underpinnings of this association remain unknown. Exposure to SiO2 (silica) particles triggers lung inflammation, including infiltration by peripheral immune cells and upregulation of pro-inflammatory cytokines. We here utilized a mouse model of lung silicosis to investigate the crosstalk between lung inflammation and memory. METHODS Silicosis was induced by intratracheal administration of a single dose of 2.5 mg SiO2/kg in mice. Molecular and behavioral measurements were conducted 24 h and 15 days after silica administration. Lung and hippocampal inflammation were investigated by histological analysis and by determination of pro-inflammatory cytokines. Hippocampal synapse damage, amyloid-β (Aβ) peptide content and phosphorylation of Akt, a proxy of hippocampal insulin signaling, were investigated by Western blotting and ELISA. Memory was assessed using the open field and novel object recognition tests. RESULTS Administration of silica induced alveolar collapse, lung infiltration by polymorphonuclear (PMN) cells, and increased lung pro-inflammatory cytokines. Lung inflammation was followed by upregulation of hippocampal pro-inflammatory cytokines, synapse damage, accumulation of the Aβ peptide, and memory impairment in mice. CONCLUSION The current study identified a crosstalk between lung and brain inflammatory responses leading to hippocampal synapse damage and memory impairment after exposure to a single low dose of silica in mice.
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Affiliation(s)
- Patrick R. Suman
- grid.8536.80000 0001 2294 473XInstitute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lisiane S. Souza
- grid.8536.80000 0001 2294 473XInstitute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Grasielle C. Kincheski
- grid.8536.80000 0001 2294 473XInstitute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil ,grid.8536.80000 0001 2294 473XInstitute of Medical Biochemistry Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Helen M. Melo
- grid.8536.80000 0001 2294 473XInstitute of Medical Biochemistry Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mariana N. Machado
- grid.8536.80000 0001 2294 473XInstitute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Giovanna M. C. Carvalho
- grid.412211.50000 0004 4687 5267Pedro Ernesto University Hospital, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fernanda G. De Felice
- grid.8536.80000 0001 2294 473XInstitute of Medical Biochemistry Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil ,grid.472984.4D’Or Institute for Research and Education, Rio de Janeiro, Brazil ,grid.410356.50000 0004 1936 8331Centre for Neuroscience Studies, Department of Biomedical and Molecular Sciences & Department of Psychiatry, Queen’s University, Kingston, Canada
| | - Walter A. Zin
- grid.8536.80000 0001 2294 473XInstitute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sergio T. Ferreira
- grid.8536.80000 0001 2294 473XInstitute of Biophysics Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil ,grid.8536.80000 0001 2294 473XInstitute of Medical Biochemistry Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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26
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Hu HY, Zhang YR, Aerqin Q, Ou YN, Wang ZT, Cheng W, Feng JF, Tan L, Yu JT. Association between multimorbidity status and incident dementia: a prospective cohort study of 245,483 participants. Transl Psychiatry 2022; 12:505. [PMID: 36476644 PMCID: PMC9729184 DOI: 10.1038/s41398-022-02268-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 12/12/2022] Open
Abstract
Multimorbidity (the presence of two or more long-term conditions [LTCs]) was suggested to exacerbate the neuronal injuries. The impact of multimorbidity on dementia has not been fully elucidated. We aimed to investigate the association between multimorbidity and dementia risk. We used the prospective data from 245,483 UK Biobank participants during a 9-year follow-up. Multimorbidity status was evaluated based on the LTC counts and multimorbidity patterns. Cox regression models adjusted for potential confounders were used to examine the associations of multimorbidity status with all-cause dementia (ACD), Alzheimer's disease (AD) and vascular dementia (VD). Participants with multimorbidity at baseline had higher risks of ACD and VD, and the risks were elevated with the increase of LTC counts (ACD: hazard ratios [HR] = 1.15, 95% confidence intervals [CI] = 1.01-1.31 with 2 LTCs; HR = 1.18, CI = 1.01-1.39 with 3 LTCs; HR = 1.65, CI = 1.44-1.88 with ≥4 LTCs; VD: HR = 1. 66, CI = 1.24-2.21 with 2 LTCs; HR = 2.10, CI = 1.53-2.88 with 3 LTCs; HR = 3.17, CI = 2.43-4.13 with ≥4 LTCs). Participants with ≥4 LTCs also had a higher risk of AD (HR = 1.34, CI = 1.08-1.66]. Participants with the cardio-cerebrovascular/respiratory/metabolic/musculoskeletal/depressive multimorbidity were 1.46, 1.28, and 2.50 times more likely to develop ACD (HR = 1.46, 95% CI = 1.28-1.67), AD (HR = 1.28, CI = 1.04-1.58), and VD (HR = 2.50, CI = 1.90-3.27), respectively. Those with tumor/genitourinary/digestive disorders had a 11% higher hazard of ACD (HR = 1.11, CI = 1.00-1.24) and a 73% elevated risk of VD (HR = 1.73, CI = 1.37-2.18). The prevention of LTC accumulation and the identification of specific multimorbidity patterns might be beneficial to the prevention of dementia and its subtypes, AD as well as VD.
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Affiliation(s)
- He-Ying Hu
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Ya-Ru Zhang
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qiaolifan Aerqin
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ya-Nan Ou
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Zuo-Teng Wang
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China
| | - Wei Cheng
- The Institute of Science and Technology for Brain-inspired Intelligence, Fudan University, Shanghai, China
| | - Jian-Feng Feng
- The Institute of Science and Technology for Brain-inspired Intelligence, Fudan University, Shanghai, China
| | - Lan Tan
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China.
| | - Jin-Tai Yu
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China. .,Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China. .,The Institute of Science and Technology for Brain-inspired Intelligence, Fudan University, Shanghai, China.
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27
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Wang J, Dove A, Song R, Qi X, Ma J, Bennett DA, Xu W. Poor pulmonary function is associated with mild cognitive impairment, its progression to dementia, and brain pathologies: A community-based cohort study. Alzheimers Dement 2022; 18:2551-2559. [PMID: 35184372 PMCID: PMC10078691 DOI: 10.1002/alz.12625] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 01/10/2022] [Accepted: 01/25/2022] [Indexed: 01/31/2023]
Abstract
INTRODUCTION The relationship between pulmonary function (PF) and mild cognitive impairment (MCI), dementia, and brain pathologies remains unclear. METHODS A total of 1312 dementia-free participants, including a cognitively intact group (n = 985) and an MCI group (n = 327), were followed for up to 21 years to detect incident MCI and dementia. PF was assessed at baseline with a composite score and tertiled. Over follow-up, 540 participants underwent autopsies for neuropathological assessment. RESULTS Compared to the highest PF, the hazard ratios (95% confidence intervals [CIs]) of the lowest PF were 1.95 (1.43-2.66) for MCI in the cognitively intact group and 1.55 (1.03-2.33) for dementia in the MCI group. Low PF was further related to Alzheimer's disease pathology (odds ratio [OR] 1.32, 95% CI 1.19-1.47) and vascular pathology (OR 3.05, 95% CI 1.49-6.25). DISCUSSION Low PF increases MCI risk and accelerates MCI progression to dementia. Both neurodegenerative and vascular mechanisms may underlie the PF-dementia association.
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Affiliation(s)
- Jiao Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China.,Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China
| | - Abigail Dove
- Department of Neurobiology, Karolinska Institutet, Care Sciences and Society, Stockholm, Sweden
| | - Ruixue Song
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China.,Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shangdong University, Qilu Hospital of Shangdong University, Jinan, China
| | - Xiuying Qi
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China.,Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China
| | - Jun Ma
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - David A Bennett
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, Illinois, USA
| | - Weili Xu
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China.,Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China.,Department of Neurobiology, Karolinska Institutet, Care Sciences and Society, Stockholm, Sweden
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28
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Gu C, Ma M, Xu J, Yuan W, Li R, Guo H, Gao H, Feng W, Guo H, Zheng L, Zhang Y. Association between pulmonary ventilatory function and mild cognitive impairment: A population-based study in rural China. Front Public Health 2022; 10:1038576. [PMID: 36408049 PMCID: PMC9666756 DOI: 10.3389/fpubh.2022.1038576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 10/18/2022] [Indexed: 11/25/2022] Open
Abstract
Background Mild cognitive impairment (MCI), a reversible intermediate state, plays an important role in the development and prevention of dementia. The relationship between pulmonary function and MCI risk has not yet been well-elucidated. Methods We included 2,947 rural Chinese residents aged ≥35 years who were free from a history of stroke, dementia, or other brain diseases and measured pulmonary ventilatory function using calibrated spirometry according to the recommended method. MCI was assessed with the Montreal Cognitive Assessment-Basic for Chinese scale. Logistic regression models and restricted cubic splines with covariate adjustment were performed to explore the association between pulmonary function and MCI risk. Results The prevalence of MCI increased with decreasing pulmonary function, from the lowest quartile to the highest quartile of pulmonary function: 63.9, 50.5, 43.8, and 43.6%, respectively. After adjustment for confounding factors, participants in the first quartile had a significantly increased risk of MCI (ORs, 1.691, 95% CI, 1.267-2.258), with the highest quartile as the reference. In the subgroup analysis, a significant association of pulmonary function and MCI was found in females and those with low physical activity. Meanwhile, we observed an L-shaped relationship between pulmonary function and MCI (P non-linear = 0.032). Conclusions Poor pulmonary function was associated with an increased risk of MCI among rural Chinese adults, and presented a non-linear relationship. These findings remind us of the need for early cognitive assessment in local populations with lower pulmonary function.
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Affiliation(s)
- Cuiying Gu
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, China,Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Mingfeng Ma
- Department of Cardiology, Fenyang Hospital of Shanxi Province, Fenyang, China
| | - Jiahui Xu
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, China
| | - Wei Yuan
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, China
| | - Ruixue Li
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, China
| | - Hui Guo
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, China
| | - Hanshu Gao
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, China
| | - Wenjing Feng
- Department of Epidemiology, School of Public Health, China Medical University, Shenyang, China
| | - Haiqiang Guo
- Department of Health Statistics, China Medical University, Shenyang, China
| | - Liqiang Zheng
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China,*Correspondence: Liqiang Zheng
| | - Yao Zhang
- Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang, China,Yao Zhang
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29
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Zhou L, Yang H, Zhang Y, Li H, Zhang S, Li D, Ma Y, Hou Y, Lu W, Wang Y. Association of impaired lung function with dementia, and brain magnetic resonance imaging indices: a large population-based longitudinal study. Age Ageing 2022; 51:6834143. [PMID: 36413587 DOI: 10.1093/ageing/afac269] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 09/04/2022] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE to examine the association between different patterns of impaired lung function with the incident risk of dementia and magnetic resonance imaging (MRI)-based brain structural features. METHODS in UK Biobank, a total of 308,534 dementia-free participants with valid lung function measures (forced expiratory volume in 1 s [FEV1] and forced vital capacity [FVC]) were included. Association was assessed using Cox proportional hazards regression model. Furthermore, the association between impaired lung function and brain MRI biomarkers related to cognitive function was analysed among 30,159 participants. RESULTS during a median follow-up of 12.6 years, 3,607 incident all-cause dementia cases were recorded. Restrictive impairment (hazard ratio [HR], 1.42; 95% confidence interval [CI], 1.27-1.60) and obstructive impairment (HR, 1.28; 95% CI, 1.15-1.42) were associated with higher risk of all-cause dementia. The restricted cubic splines indicated FEV1% predicted and FVC % predicted had reversed J-shaped associations with dementia. Participants with impaired lung function have higher risks of all-cause dementia across all apolipoprotein E (APOE) risk categories, whereas associations were stronger among those of low APOE risk (P for interaction = 0.034). In addition, restrictive and obstructive impairment were linked to lower total (β: -0.075, SE: 0.021, Pfdr = 0.002; β: -0.033, SE: 0.017, Pfdr = 0.069) and frontoparietal grey matter volumes, higher white matter hyperintensity, poorer white matter integrity, lower hippocampus (β: -0.066, SE: 0.024, Pfdr = 0.017; β: -0.051, SE: 0.019, Pfdr = 0.019) and other subcortical volumes. CONCLUSIONS participants with restrictive and obstructive impairments had a higher risk of dementia. Brain MRI indices further supported adverse effects and provided insight into potential pathophysiology biomarkers.
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Affiliation(s)
- Lihui Zhou
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Hongxi Yang
- Department of Bioinformatics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Yuan Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Huiping Li
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China.,Department of Clinical Sciences in Malmö, Lund University, Malmö, Sweden
| | - Shunming Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China.,Department of Clinical Sciences in Malmö, Lund University, Malmö, Sweden
| | - Dun Li
- Department of Basic Integrated Medicine, School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yue Ma
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Yabing Hou
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Wenli Lu
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Yaogang Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Tianjin Medical University, Tianjin, China.,Department of Basic Integrated Medicine, School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Halder SK, Milner R. Exaggerated hypoxic vascular breakdown in aged brain due to reduced microglial vasculo-protection. Aging Cell 2022; 21:e13720. [PMID: 36130175 PMCID: PMC9649604 DOI: 10.1111/acel.13720] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 08/04/2022] [Accepted: 08/31/2022] [Indexed: 01/25/2023] Open
Abstract
In a recent study of young mice, we showed that chronic mild hypoxia (CMH, 8% O2 ) triggers transient blood-brain barrier (BBB) disruption, and that microglia play an important vasculo-protective function in maintaining BBB integrity. As hypoxia is a common component of many age-related diseases, here we extended these studies to aged mice and found that hypoxia-induced vascular leak was greatly amplified (5-fold to 10-fold) in aged mice, being particularly high in the olfactory bulb and midbrain. While aged mice showed no obvious difference in the early stages of hypoxic angiogenic remodeling, the compensatory increase in vascularity and vessel maturation was significantly delayed. Compared with young brain, microglia in the normoxic aged brain were markedly activated, and this was further increased under hypoxic conditions, but paradoxically, this correlated with reduced vasculo-protection. Microglial depletion studies showed that microglial still play an important vasculo-protective role in aged brain, but interestingly, partial attenuation of microglial activation with minocycline resulted in fewer vascular leaks and reduced loss of endothelial tight junction proteins. Taken together, these findings suggest that increased BBB disruption in hypoxic aged mice can be explained both by a delayed vascular remodeling response and reduced microglial vasculo-protection. Importantly, they show that overly activated microglia in the aged brain are less effective at maintaining vascular integrity, though this can be improved by reducing microglial activation with minocycline, suggesting therapeutic potential for enhancing BBB integrity in the hypoxia-predisposed elderly population.
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Affiliation(s)
- Sebok K. Halder
- San Diego Biomedical Research InstituteSan DiegoCaliforniaUSA
| | - Richard Milner
- San Diego Biomedical Research InstituteSan DiegoCaliforniaUSA
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You J, Zhang YR, Wang HF, Yang M, Feng JF, Yu JT, Cheng W. Development of a novel dementia risk prediction model in the general population: A large, longitudinal, population-based machine-learning study. EClinicalMedicine 2022; 53:101665. [PMID: 36187723 PMCID: PMC9519470 DOI: 10.1016/j.eclinm.2022.101665] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/29/2022] [Accepted: 08/31/2022] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The existing dementia risk models are limited to known risk factors and traditional statistical methods. We aimed to employ machine learning (ML) to develop a novel dementia prediction model by leveraging a rich-phenotypic variable space of 366 features covering multiple domains of health-related data. METHODS In this longitudinal population-based cohort of the UK Biobank (UKB), 425,159 non-demented participants were enrolled from 22 recruitment centres across the UK between March 1, 2006 and October 31, 2010. We implemented a data-driven strategy to identify predictors from 366 candidate variables covering a comprehensive range of genetic and environmental factors and developed the ML model to predict incident dementia and Alzheimer's Disease (AD) within five, ten, and much longer years (median 11.9 [Interquartile range 11.2-12.5] years). FINDINGS During a follow-up of 5,023,337 person-years, 5287 and 2416 participants developed dementia and AD, respectively. A novel UKB dementia risk prediction (UKB-DRP) model comprising ten predictors including age, ApoE ε4, pairs matching time, leg fat percentage, number of medications taken, reaction time, peak expiratory flow, mother's age at death, long-standing illness, and mean corpuscular volume was established. Our prediction model was internally evaluated based on five-fold cross-validation on discrimination and calibration, and it was further compared with existing prediction scales. The UKB-DRP model can achieve high discriminative accuracy in dementia (AUC 0.848 ± 0.007) and even better in AD (AUC 0.862 ± 0.015). The model was well-calibrated (Hosmer-Lemeshow goodness-of-fit p-value = 0.92), and the predictive power was solid in different incidence time groups. More importantly, our model presented an apparent superiority over existing models like Cardiovascular Risk Factors, Aging, and Incidence of Dementia Risk Score (AUC 0.705 ± 0.008), the Dementia Risk Score (AUC 0.752 ± 0.007), and the Australian National University Alzheimer's Disease Risk Index (AUC 0.584 ± 0.017). The model was internally validated in the general population of European ancestry and White ethnicity; thus, further validation with independent datasets is necessary to confirm these findings. INTERPRETATION Our ML-based UKB-DRP model incorporated ten easily accessible predictors with solid predictive power for incident dementia and AD within five, ten, and much longer years, which can be used to identify individuals at high risk of dementia and AD in the general population. FUNDING This study was funded by grants from the Science and Technology Innovation 2030 Major Projects (2022ZD0211600), National Key R&D Program of China (2018YFC1312904, 2019YFA070950), National Natural Science Foundation of China (282071201, 81971032, 82071997), Shanghai Municipal Science and Technology Major Project (2018SHZDZX01), Research Start-up Fund of Huashan Hospital (2022QD002), Excellence 2025 Talent Cultivation Program at Fudan University (3030277001), Shanghai Rising-Star Program (21QA1408700), Medical Engineering Fund of Fudan University (yg2021-013), and the 111 Project (No. B18015).
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Affiliation(s)
- Jia You
- Department of Neurology, Huashan Hospital, Institute of Science and Technology for Brain-Inspired Intelligence, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
| | - Ya-Ru Zhang
- Department of Neurology, Huashan Hospital, Institute of Science and Technology for Brain-Inspired Intelligence, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
| | - Hui-Fu Wang
- Department of Neurology, Huashan Hospital, Institute of Science and Technology for Brain-Inspired Intelligence, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
| | - Ming Yang
- Department of Neurology, Huashan Hospital, Institute of Science and Technology for Brain-Inspired Intelligence, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
| | - Jian-Feng Feng
- Department of Neurology, Huashan Hospital, Institute of Science and Technology for Brain-Inspired Intelligence, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
- Key Laboratory of Computational Neuroscience and Brain-Inspired Intelligence (Fudan University), Ministry of Education, China
- Zhangjiang Fudan International Innovation Center, Shanghai, China
- Fudan ISTBI—ZJNU Algorithm Centre for Brain-inspired Intelligence, Zhejiang Normal University, Zhejiang, China
- Corresponding authors at: Room 2316, Guanghua Building, East Main Wing, Fudan University, No. 220 Handan Road, Shanghai, 200433, China.
| | - Jin-Tai Yu
- Department of Neurology, Huashan Hospital, Institute of Science and Technology for Brain-Inspired Intelligence, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
- Corresponding author at: Huashan Hospital, No. 12 Wulumuqi Zhong Road, Shanghai, 200040, China.
| | - Wei Cheng
- Department of Neurology, Huashan Hospital, Institute of Science and Technology for Brain-Inspired Intelligence, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
- Fudan ISTBI—ZJNU Algorithm Centre for Brain-inspired Intelligence, Zhejiang Normal University, Zhejiang, China
- Corresponding authors at: Room 2316, Guanghua Building, East Main Wing, Fudan University, No. 220 Handan Road, Shanghai, 200433, China.
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Calvin CM, Conroy MC, Moore SF, Kuźma E, Littlejohns TJ. Association of Multimorbidity, Disease Clusters, and Modification by Genetic Factors With Risk of Dementia. JAMA Netw Open 2022; 5:e2232124. [PMID: 36125811 PMCID: PMC9490497 DOI: 10.1001/jamanetworkopen.2022.32124] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
IMPORTANCE Individual conditions have been identified as risk factors for dementia; however, it is important to consider the role of multimorbidity, as conditions often co-occur. OBJECTIVE To investigate whether multimorbidity is associated with incident dementia and whether associations vary by different clusters of disease and genetic risk for dementia. DESIGN, SETTING, AND PARTICIPANTS This population-based prospective cohort study used data from the UK Biobank cohort, with baseline data collected between 2006 and 2010 and with up to 15 years of follow-up. Participants included women and men without dementia and aged at least 60 years at baseline. Medical conditions were captured as part of nurse-led verbal interviews conducted at baseline assessment centers. Data were analyzed from October 2020 to July 2022. EXPOSURES The presence of at least 2 long-term conditions from a preselected list of 42 conditions was used to define multimorbidity. High genetic risk for dementia was based on presence of 1 or 2 apolipoprotein (APOE) ε4 alleles. MAIN OUTCOMES AND MEASURES The main outcome, incident dementia, was derived from hospital inpatient and death registry records. Associations of multimorbidity with dementia were assessed with Cox proportional hazards models. RESULTS A total of 206 960 participants (mean [SD] age, 64.1 [2.9] years, 108 982 [52.7%] women) were included in the final sample, of whom 89 201 participants (43.1%) had multimorbidity. Over a mean (SD) of 11.8 (2.2) years of follow-up, 6182 participants (3.0%) developed dementia. The incidence rate was 1.87 (95% CI, 1.80-1.94) per 1000 person-years for those without multimorbidity and 3.41 (95% CI, 3.30-3.53) per 1000 person-years for those with multimorbidity. In Cox proportional hazards models adjusted for age, sex, ethnicity, education, socioeconomic status, and APOE-ε4 carrier status, multimorbidity was associated with an increased risk of incident dementia (hazard ratio [HR], 1.63 [95% CI, 1.55-1.71]). The highest dementia risk was observed for the hypertension, diabetes, and coronary heart disease cluster (HR, 2.20 [95% CI, 1.98-2.46]) and pain, osteoporosis, and dyspepsia cluster (HR, 2.00 [95% CI, 1.68-2.37]) in women and in the diabetes and hypertension cluster (HR, 2.24 [95% CI, 1.97-2.55]) and coronary heart disease, hypertension, and stroke cluster (HR, 1.94 [95% CI, 1.71-2.20]) in men, compared with no multimorbidity. The associations between multimorbidity and dementia were greater in those with a lower genetic risk of dementia (HR, 1.96 [95% CI, 1.81-2.11]) than in those with a higher genetic risk of dementia (HR, 1.39 [95% CI, 1.30-1.49]). Similar findings were observed when stratifying diseases clusters by genetic risk for dementia. CONCLUSIONS AND RELEVANCE These findings suggest that multimorbidity was associated with an increased risk of dementia. The associations varied by clusters of disease and genetic risk for dementia. These findings could help with the identification of individuals at high risk of dementia as well as the development of targeted interventions to reduce or delay dementia incidence.
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Affiliation(s)
- Catherine M. Calvin
- Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - Megan C. Conroy
- Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - Sarah F. Moore
- College of Medicine and Health, University of Exeter, Exeter, United Kingdom
| | - Elżbieta Kuźma
- Albertinen-Haus Centre for Geriatrics and Gerontology, University of Hamburg, Hamburg, Germany
| | - Thomas J. Littlejohns
- Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
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Annaka H, Nomura T, Moriyama H. Cognitive Function and the Ability to Operate Long-Term Oxygen Therapy Equipment: An Exploratory Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10708. [PMID: 36078424 PMCID: PMC9517874 DOI: 10.3390/ijerph191710708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 08/22/2022] [Accepted: 08/26/2022] [Indexed: 06/15/2023]
Abstract
Chronic respiratory disease patients with severe hypoxia receive long-term oxygen therapy (LTOT). The proper operation of LTOT equipment is essential for continuing treatment. This exploratory study investigated the relationship between cognitive impairment as a comorbidity in patients receiving LTOT and their ability to operate the LTOT equipment. The study measured responses to questions based on the ability of participants to operate the equipment and applied the Montreal Cognitive Assessment (MoCA). The ability of groups with MoCA scores ≤ 25 and >25 to operate LTOT equipment was compared to confirm the correlation between MoCA and ability to operate the equipment. An aggregate of 60 participants receiving LTOT were recruited, of whom 45 (75%) were MoCA score ≤ 25. The group of MoCA score ≤ 25 demonstrated a lower ability to operate LTOT equipment than group of MoCA score > 25 (p = 0.012). Additionally, a correlation was found between the ability to operate LTOT equipment and MoCA (rs = 0.743, p < 0.001). The results indicated that the group of MoCA score ≤ 25 indicated a lower ability to operate LTOT equipment than that of MoCA score > 25. Cognitive impairment in patients receiving LTOT can affect their ability to operate LTOT equipment.
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Affiliation(s)
- Hiroki Annaka
- Department of Occupational Therapy, National Hospital Organization Nishiniigata Chuo Hospital, Niigata 950-2085, Japan
- Graduate School, Niigata University of Health and Welfare, Niigata 950-3198, Japan
| | - Tomonori Nomura
- Department of Occupational Therapy, Faculty of Rehabilitation, Niigata University of Health and Welfare, Niigata 950-3198, Japan
| | - Hiroshi Moriyama
- Respiratory Center, National Hospital Organization Nishiniigata Chuo Hospital, Niigata 950-2085, Japan
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Wan J, Zhang J, Zhang M, Li C, Zhang Q, Hou X, Xuan G, Lin J. Association of Peak Expiratory Flow with Cognitive Function in the Chinese Middle-Aged and Elderly Population: A 7-Year Longitudinal Study. J Alzheimers Dis 2022; 89:903-911. [PMID: 35964174 DOI: 10.3233/jad-215407] [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: 11/15/2022]
Abstract
BACKGROUND Previous studies have shown that impaired pulmonary function may be associated with cognitive decline, posing the question of whether peak expiratory flow (PEF) % pred could present a modifiable risk factor. OBJECTIVE To assess the association between PEF% pred and future cognitive function among Chinese participants aged 45 years and above. METHODS Data came from four waves fielded by the China Health and Retirement Longitudinal Study. Cognitive function was assessed by a global cognition score. Multivariate linear regression models and generalized estimating equation (GEE) were used to investigate associations between PEF% pred and later cognitive function. RESULTS A total of 2,950 participants were eligible for the final data analysis. After adjustment for baseline cognition and potential confounders, the association remained statistically significant (β = 0.0057, p = 0.027). Domains with increases were focused on episodic memory (β= 0.0028, p = 0.048) and figure drawing (β= 0.0040, p = 0.028). But these associations were not found in women (β= 0.0027, p = 0.379). However, GEE suggested that the rates of decline in global cognition decreased by 0.0096 (p < 0.001) units per year as baseline PEF% pred increased by 1% in middle-aged and elderly individuals, regardless of sex. And higher baseline PEF% pred correlated with declined rates of decrease of in episodic memory, figure drawing, and Telephone Interview of Cognitive Status (TICS). CONCLUSION Higher baseline PEF% pred was significantly associated with slower cognitive decline in global cognition, episodic memory, figure drawing, and TICS in middle aged and elderly Chinese adults.
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Affiliation(s)
- Jingxuan Wan
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China.,Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Jingyuan Zhang
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China.,Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Mengyuan Zhang
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China.,Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Chunxiao Li
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China.,Peking University Health Science Center, Beijing, China
| | - Qing Zhang
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China.,Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Xin Hou
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China.,Peking University Health Science Center, Beijing, China
| | - Gao Xuan
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China.,Peking University Health Science Center, Beijing, China
| | - Jiangtao Lin
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences/Peking Union Medical College, Beijing, China.,Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing, China
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Meng Z, Cheng L, Hu X, Chen Q. Risk factors for in-hospital death in elderly patients over 65 years of age with dementia: A retrospective cross-sectional study. Medicine (Baltimore) 2022; 101:e29737. [PMID: 35777004 PMCID: PMC9239669 DOI: 10.1097/md.0000000000029737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
As the population continues to age, dementia is becoming a huge social, economic, and healthcare burden. However, the risk factors for in-hospital death in elderly patients over 65 years of age with dementia are not well understood. Identifying factors that affect their prognosis could help clinicians with scientific decision-making. To examine the risk factors for in-hospital death in elderly patients over 65 years of age with dementia in the Geriatric Department of West China Hospital. In this retrospective, cross-sectional study, we analyzed inpatients aged ≥65 years with dementia between 2010 and 2016 using electronic medical records from the Information Center of West China Hospital. The risk factors for death were assessed using multivariable logistic regression. Out of a total of 2986 inpatients with dementia, 3.4% died. Patient deaths were related to digestive diseases, respiratory diseases, circulatory diseases, urinary diseases, and chronic obstructive pulmonary disease, whereas patient survival was associated with osteoporosis and Parkinson disease. Patients with a mean length of hospital stay of ≥60 days had an increased risk of death (all P <.05). In the multiple logistic regression analysis, age ≥80 years, digestive diseases, respiratory diseases, urinary diseases, diabetes, chronic obstructive pulmonary disease, and ≥7 comorbidities were risk factors for death. Mortality in hospitalized older patients with dementia is low, but some risk factors may be easily ignored. These findings could raise awareness among clinicians and caregivers about risk factors in hospitalized older patients, particularly hospitalized elderly patients with multiple comorbidities. Therefore, to reduce mortality, early prevention and management of potential risks are necessary.
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Affiliation(s)
- Zhangmin Meng
- Department of Geriatrics, West China Hospital, West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
| | - Linan Cheng
- West China School of Nursing, Sichuan University/Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, China
| | - Xiuying Hu
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Qian Chen
- Department of Geriatrics, West China Hospital, West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
- *Correspondence: Qian Chen, Department of Geriatrics, West China Hospital/West China School of Nursing, Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan 610041, China (e-mail: )
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Shang X, Zhu Z, Zhang X, Huang Y, Zhang X, Liu J, Wang W, Tang S, Yu H, Ge Z, Yang X, He M. Association of a wide range of chronic diseases and apolipoprotein E4 genotype with subsequent risk of dementia in community-dwelling adults: A retrospective cohort study. EClinicalMedicine 2022; 45:101335. [PMID: 35299656 PMCID: PMC8921546 DOI: 10.1016/j.eclinm.2022.101335] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 11/27/2022] Open
Abstract
Background Identifying independent and interactive associations of a wide range of diseases and multimorbidity and apolipoprotein E4 (APOE4) with dementia may help promote cognitive health. The main aim of the present study was to investigate associations of such diseases and their multimorbidity with incident dementia. Methods In this retrospective cohort study, we included 471,485 individuals of European ancestry from the UK Biobank, aged 38-73 years at baseline (2006-10). Dementia was identified using inpatient records and death registers. The follow-up period was between March 16, 2006, and Jan 31, 2021. Findings During a median follow-up of 11·9 years, 6189 cases of incident all-cause dementia (503 young-onset cases, 5686 late-onset cases) were documented. In multivariable-adjusted analysis, 33 out of 63 major diseases were associated with an increased risk of dementia. The hazard ratio (HR [95% CI]) ranged from 1·12 (1·06-1·19) for obesity to 14·22 (12·33-16·18) for Parkinson's disease. In addition to conventional diseases, respiratory disorders, musculoskeletal disorders, digestive disorders, painful conditions, and chronic kidney disease were associated with increased dementia risk. A larger HR for dementia was observed for a larger number of diseases (3·97 [3·51-4·48] for ≥6 diseases versus no disease). These individual diseases and multimorbidity were more predictive of young-onset dementia than of late-onset dementia. Dementia risk score incorporating multimorbidity, age, and APOE4 status had strong prediction performance (area under the curve [95% CI]: 82·2% [81·7-82·7%]). APOE4 was more predictive of late-onset dementia (HR [95% CI]: 2·90 [2·75-3·06]) than of young-onset dementia (1·26 [1·03-1·54]). Associations of painful conditions, depression, obesity, diabetes, stroke, Parkinson's disease, high cholesterol, and their multimorbidity with incident dementia were stronger among non-APOE4 carriers. Interpretation Besides conventional diseases, numerous diseases are associated with an increased risk of dementia. These individual diseases and multimorbidity are more predictive of young-onset dementia, whereas APOE4 is more predictive of late-onset dementia. Individual diseases and multimorbidity are stronger predictors of dementia in non-APOE4 carriers. Although multiple risk factors have been adjusted for in the analysis, potential confounding from unknown factors may have biased the associations. Funding The Fundamental Research Funds of the State Key Laboratory of Ophthalmology, Project of Investigation on Health Status of Employees in Financial Industry in Guangzhou, China (Z012014075), Science and Technology Program of Guangzhou, China (202,002,020,049).
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Key Words
- AD, Alzheimer's disease
- APOE4, apolipoprotein E4
- AUC, area under the curve
- Apolipoprotein E4
- BMI, body mass index
- CAIDE, Cardiovascular Risk Factors, Aging, and Incidence of Dementia
- CI, confidence interval
- CKD, chronic kidney disease
- COPD, chronic obstructive pulmonary disease
- Dementia
- FRS, Framingham Heart Study
- HDL-C, high-density lipoprotein cholesterol
- HIV, human immunodeficiency virus
- HR, hazard ratio
- HbA1c, Glycosylated haemoglobin
- ICD, international classification diseases
- IQR, interquartile range
- Interaction
- LDL-C, low-density lipoprotein cholesterol
- Late-onset dementia
- Major chronic diseases
- Multimorbidity
- PAR, Population attributable risk
- ROC, receiver operating characteristic curve
- SD, standard deviation
- VD, vascular dementia
- Young-onset dementia
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Affiliation(s)
- Xianwen Shang
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan 2nd Rd, Yuexiu District, Guangzhou 510080, China
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Centre for Eye Research Australia, The University of Melbourne, Level 7, 32 Gisborne Street, Melbourne, VIC 3002, Australia
| | - Zhuoting Zhu
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan 2nd Rd, Yuexiu District, Guangzhou 510080, China
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Centre for Eye Research Australia, The University of Melbourne, Level 7, 32 Gisborne Street, Melbourne, VIC 3002, Australia
| | - Xueli Zhang
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan 2nd Rd, Yuexiu District, Guangzhou 510080, China
| | - Yu Huang
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan 2nd Rd, Yuexiu District, Guangzhou 510080, China
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xiayin Zhang
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan 2nd Rd, Yuexiu District, Guangzhou 510080, China
- Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jiahao Liu
- Melbourne School of Population and Global Health, University of Melbourne, Melbourne VIC 3010, Australia
| | - Wei Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Shulin Tang
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan 2nd Rd, Yuexiu District, Guangzhou 510080, China
| | - Honghua Yu
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan 2nd Rd, Yuexiu District, Guangzhou 510080, China
| | - Zongyuan Ge
- Monash e-Research Center, Faculty of Engineering, Airdoc Research, Nvidia AI Technology Research Center, Monash University, Melbourne VIC 3800, Australia
| | - Xiaohong Yang
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan 2nd Rd, Yuexiu District, Guangzhou 510080, China
| | - Mingguang He
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, 106 Zhongshan 2nd Rd, Yuexiu District, Guangzhou 510080, China
- Centre for Eye Research Australia, The University of Melbourne, Level 7, 32 Gisborne Street, Melbourne, VIC 3002, Australia
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
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Sedentary Time and Cognitive Impairment in Patients Using Long-Term Oxygen Therapy: A Cross-Sectional Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19031726. [PMID: 35162749 PMCID: PMC8835276 DOI: 10.3390/ijerph19031726] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/25/2022] [Accepted: 01/30/2022] [Indexed: 12/17/2022]
Abstract
Physical inactivity is a predictor of death in patients with chronic respiratory disease. Cognitive impairment is common among patients with chronic respiratory disease. However, the association between sedentary time and cognitive impairment in patients with chronic respiratory disease using long-term oxygen therapy is unclear. This study aimed to determine the relationship between sedentary time and cognitive impairment in patients on long-term oxygen therapy. This cross-sectional study included 96 patients with chronic respiratory disease on long-term oxygen therapy (mean age 77.3 years; female, 22%). The primary outcomes measured were sedentary time (Japanese version of the International Physical Activity Questionnaire Short Form), cognitive function (Montreal Cognitive Assessment), and dyspnea (modified Medical Research Council scale). The factors associated with sedentary time were confirmed by multiple regression analysis. The median sedentary time was 600.0 min. The median Montreal Cognitive Assessment score was 24.0 points, and 67 (70%) patients had mild cognitive impairment. In multiple regression analysis, sedentary time was associated with dyspnea (β = 0.397, p < 0.001) and cognitive function (β = −0.239, p = 0.020). This study indicates that sedentary time in patients on long-term oxygen therapy was associated with dyspnea and cognitive impairment.
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Morton L, Braakhuis AJ. The Effects of Fruit-Derived Polyphenols on Cognition and Lung Function in Healthy Adults: A Systematic Review and Meta-Analysis. Nutrients 2021; 13:4273. [PMID: 34959825 PMCID: PMC8708719 DOI: 10.3390/nu13124273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/22/2021] [Accepted: 11/25/2021] [Indexed: 11/17/2022] Open
Abstract
Polyphenols are plant derived nutrients that influence oxidative stress and inflammation and therefore may have positive benefits on cognition and lung function. This systematic review and meta-analysis aimed to evaluate the effects of fruit derived polyphenol intakes on cognition and lung capacity in healthy adults. In August 2020 and October 2021, Medline and Google Scholar were used to search for relevant studies examining the effects of fruit derived polyphenol intakes on cognition and/or lung function in healthy adults (<70 years old). Fourteen studies related to cognition (409 healthy subjects) and seven lung/respiratory studies (20,788 subjects) were used for the systematic review using the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines. The meta-analysis (using six cognition and three lung function studies) indicated a protective effect on lung function from dietary intakes of fruit-derived polyphenols. Neither a benefit nor decrement from fruit-derived polyphenol intakes were detected for cognition. Human intervention trials examining the effects of polyphenol supplementation on lung function in healthy adults are scarce and intervention studies are warranted. More conclusive results are needed to provide recommendations for polyphenol supplementation to support aspects of cognition.
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Affiliation(s)
- Lillian Morton
- Faculty of Medical & Health Science, Grafton Campus, The University of Auckland, Auckland 1142, New Zealand;
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39
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Bridging late-life depression and chronic somatic diseases: a network analysis. Transl Psychiatry 2021; 11:557. [PMID: 34718326 PMCID: PMC8557204 DOI: 10.1038/s41398-021-01686-z] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 10/13/2021] [Accepted: 10/19/2021] [Indexed: 01/07/2023] Open
Abstract
The clinical presentation of late-life depression is highly heterogeneous and likely influenced by the co-presence of somatic diseases. Using a network approach, this study aims to explore how depressive symptoms are interconnected with each other, as well as with different measures of somatic disease burden in older adults. We examined cross-sectional data on 2860 individuals aged 60+ from the Swedish National Study on Aging and Care in Kungsholmen, Stockholm. The severity of sixteen depressive symptoms was clinically assessed with the Comprehensive Psychopathological Rating Scale. We combined data from individual clinical assessment and health-registers to construct eight system-specific disease clusters (cardiovascular, neurological, gastrointestinal, metabolic, musculoskeletal, respiratory, sensory, and unclassified), along with a measure of overall somatic burden. The interconnection among depressive symptoms, and with disease clusters was explored through networks based on Spearman partial correlations. Bridge centrality index and network loadings were employed to identify depressive symptoms directly connecting disease clusters and depression. Sadness, pessimism, anxiety, and suicidal thoughts were the most interconnected symptoms of the depression network, while somatic symptoms of depression were less interconnected. In the network integrating depressive symptoms with disease clusters, suicidal thoughts, reduced appetite, and cognitive difficulties constituted the most consistent bridge connections. The same bridge symptoms emerged when considering an overall measure of somatic disease burden. Suicidal thoughts, reduced appetite, and cognitive difficulties may play a key role in the interconnection between late-life depression and somatic diseases. If confirmed in longitudinal studies, these bridging symptoms could constitute potential targets in the prevention of late-life depression.
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40
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Wu HM, Goate AM, O'Reilly PF. Heterogeneous effects of genetic risk for Alzheimer's disease on the phenome. Transl Psychiatry 2021; 11:406. [PMID: 34301914 PMCID: PMC8302633 DOI: 10.1038/s41398-021-01518-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 06/11/2021] [Accepted: 07/01/2021] [Indexed: 12/18/2022] Open
Abstract
Here we report how four major forms of Alzheimer's disease (AD) genetic risk-APOE-ε4, APOE-ε2, polygenic risk and familial risk-are associated with 273 traits in ~500,000 individuals in the UK Biobank. The traits cover blood biochemistry and cell traits, metabolic and general health, psychosocial health, and cognitive function. The difference in the profile of traits associated with the different forms of AD risk is striking and may contribute to heterogenous presentation of the disease. However, we also identify traits significantly associated with multiple forms of AD genetic risk, as well as traits showing significant changes across ages in those at high risk of AD, which may point to their potential roles in AD etiology. Finally, we highlight how survivor effects, in particular those relating to shared risks of cardiovascular disease and AD, can generate associations that may mislead interpretation in epidemiological AD studies. The UK Biobank provides a unique opportunity to powerfully compare the effects of different forms of AD genetic risk on the phenome in the same cohort.
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Affiliation(s)
- Hei Man Wu
- Department of Genetics and Genomic Sciences, Icahn School of Medicine, Mount Sinai, New York, NY, USA.
| | - Alison M Goate
- Department of Genetics and Genomic Sciences, Icahn School of Medicine, Mount Sinai, New York, NY, USA
- Department of Neurosciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Paul F O'Reilly
- Department of Genetics and Genomic Sciences, Icahn School of Medicine, Mount Sinai, New York, NY, USA.
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41
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Gallina P, Nicoletti C, Scollato A, Lolli F. The "Glymphatic-Lymphatic System Pathology" and a New Categorization of Neurodegenerative Disorders. Front Neurosci 2021; 15:669681. [PMID: 34093117 PMCID: PMC8172792 DOI: 10.3389/fnins.2021.669681] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/14/2021] [Indexed: 12/20/2022] Open
Affiliation(s)
- Pasquale Gallina
- Department of Neurosciences, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy.,Neurosurgical Unit, Careggi University Hospital, Florence, Italy
| | - Claudio Nicoletti
- Department of Experimental and Clinical Medicine, Section of Anatomy, University of Florence, Florence, Italy
| | | | - Francesco Lolli
- Department of Clinical and Experimental Biomedical Sciences "Mario Serio", University of Florence, Florence, Italy
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42
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Gallina P, Boschi A, Angelini L, Lastrucci G. The Possible Link Between Poor Pulmonary Function and Dementia. Chest 2021; 158:833-834. [PMID: 32768073 DOI: 10.1016/j.chest.2020.02.082] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 02/19/2020] [Indexed: 01/29/2023] Open
Affiliation(s)
- Pasquale Gallina
- Department of NEUROFARBA, Neurosurgical Unit, University of Florence, Florence, Italy; Careggi University Hospital, Florence, Italy.
| | | | - Lucia Angelini
- Department of NEUROFARBA, Neurosurgical Unit, University of Florence, Florence, Italy
| | - Giancarlo Lastrucci
- Department of NEUROFARBA, Neurosurgical Unit, University of Florence, Florence, Italy
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43
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Shang X, Scott D, Chan RK, Zhang L, He M. Association of Pulmonary Function With Cognitive Decline in Older Adults: A Nationwide Longitudinal Study in China. J Gerontol A Biol Sci Med Sci 2021; 76:1423-1430. [PMID: 33824989 DOI: 10.1093/gerona/glab096] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Indexed: 11/12/2022] Open
Abstract
This study aimed to examine whether pulmonary function and cognition are independently associated at multiple time points. We included 8264 participants (49.9% women) aged 50-94 years at baseline from the China Health and Retirement Longitudinal Study in our analysis. Participants were enrolled in 2011 and followed up in 2013 and 2015. Cognitive function was assessed through a face-to-face interview in each survey. Pulmonary function was assessed via peak expiratory flow. Pulmonary function and cognitive function decreased significantly with age in both genders. Individuals in quintile 5 of pulmonary function had a relative increase in immediate memory (β [95% CI]: 0.19 [0.09, 0.30]) and delayed memory (0.16 [0.04, 0.28]) during follow-up compared with those in quintile 1. In the repeated-measures analysis, each standard deviation increment of pulmonary function was associated with a 0.44 (95% CI: 0.34, 0.53), 0.12 (0.09, 0.15), 0.12 (0.08, 0.16), 0.08 (0.06, 0.11), and 0.10 (0.07, 0.14) higher increase in global cognitive score, immediate memory, delayed memory, orientation, and subtraction calculation, respectively. The inverse association between pulmonary function and cognitive decline during follow-up was more evident in women (p for interaction = .0333), low-educated individuals (p for interaction = .0002), or never smokers (p for interaction = .0412). In conclusion, higher baseline pulmonary function was independently associated with a lower rate of cognitive decline in older adults. The positive association between pulmonary function and cognition was stronger in women, lower-educated individuals, or never smokers.
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Affiliation(s)
- Xianwen Shang
- Guangdong Eye Institute, Department of Ophthalmology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, Melbourne, Australia
| | - David Scott
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Geelong, Australia.,Department of Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Australia
| | | | - Lei Zhang
- Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.,China-Australia Joint Research Centre for Infectious Diseases, School of Public Health, Xi'an Jiaotong University Health, Science Center, Xi'an, Shaanxi, China
| | - Mingguang He
- Guangdong Eye Institute, Department of Ophthalmology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.,State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
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44
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Russ TC, Harris SE, Batty GD. Pulmonary Function and Risk of Alzheimer Dementia: Two-Sample Mendelian Randomization Study. Chest 2020; 160:274-276. [PMID: 33321123 DOI: 10.1016/j.chest.2020.11.056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/17/2020] [Accepted: 11/19/2020] [Indexed: 10/22/2022] Open
Affiliation(s)
- Tom C Russ
- Alzheimer Scotland Dementia Research Centre, University of Edinburgh, Edinburgh, UK; Edinburgh Dementia Prevention Group, University of Edinburgh, Edinburgh, UK; Division of Psychiatry, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, UK; Lothian Birth Cohorts, Department of Psychology, University of Edinburgh, Edinburgh, UK.
| | - Sarah E Harris
- Lothian Birth Cohorts, Department of Psychology, University of Edinburgh, Edinburgh, UK
| | - G David Batty
- Alzheimer Scotland Dementia Research Centre, University of Edinburgh, Edinburgh, UK; UCL Research Department of Epidemiology & Public Health, University College London, London, UK
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45
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Halder SK, Milner R. Mild hypoxia triggers transient blood-brain barrier disruption: a fundamental protective role for microglia. Acta Neuropathol Commun 2020; 8:175. [PMID: 33115539 PMCID: PMC7592567 DOI: 10.1186/s40478-020-01051-z] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 10/02/2020] [Indexed: 12/11/2022] Open
Abstract
We recently demonstrated that when mice are exposed to chronic mild hypoxia (CMH, 8% O2), blood vessels in the spinal cord show transient vascular leak that is associated with clustering and activation of microglia around disrupted vessels. Importantly, microglial depletion profoundly increased hypoxia-induced vascular leak, implying that microglia play a critical role maintaining vascular integrity in the hypoxic spinal cord. The goal of the current study was to examine if microglia play a similar vasculo-protective function in the brain. Employing extravascular fibrinogen leak as an index of blood-brain barrier (BBB) disruption, we found that CMH provoked transient vascular leak in cerebral blood vessels that was associated with activation and aggregation of Mac-1-positive microglia around leaky vessels. Interestingly, CMH-induced vascular leak showed regional selectivity, being much more prevalent in the brainstem and olfactory bulb than the cerebral cortex and cerebellum. Pharmacological depletion of microglia with the colony stimulating factor-1 receptor inhibitor PLX5622, had no effect under normoxic conditions, but markedly increased hypoxia-induced cerebrovascular leak in all regions examined. As in the spinal cord, this was associated with endothelial induction of MECA-32, a marker of leaky CNS endothelium, and greater loss of endothelial tight junction proteins. Brain regions displaying the highest levels of hypoxic-induced vascular leak also showed the greatest levels of angiogenic remodeling, suggesting that transient BBB disruption may be an unwanted side-effect of hypoxic-induced angiogenic remodeling. As hypoxia is common to a multitude of human diseases including obstructive sleep apnea, lung disease, and age-related pulmonary, cardiac and cerebrovascular dysfunction, our findings have important translational implications. First, they point to a potential pathogenic role of chronic hypoxia in triggering BBB disruption and subsequent neurological dysfunction, and second, they demonstrate an important protective role for microglia in maintaining vascular integrity in the hypoxic brain.
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Affiliation(s)
- Sebok K. Halder
- San Diego Biomedical Research Institute, 10865 Road to the Cure, Suite 100, San Diego, CA 92121 USA
| | - Richard Milner
- San Diego Biomedical Research Institute, 10865 Road to the Cure, Suite 100, San Diego, CA 92121 USA
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46
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Baumeister SE, Karch A, Bahls M, Teumer A, Leitzmann MF, Baurecht H. Physical activity and risk of Alzheimer disease: A 2-sample mendelian randomization study. Neurology 2020; 95:e1897-e1905. [PMID: 32680943 PMCID: PMC7963349 DOI: 10.1212/wnl.0000000000010013] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 04/10/2020] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Evidence from observational studies for the effect of physical activity on the risk of Alzheimer disease (AD) is inconclusive. We performed a 2-sample mendelian randomization analysis to examine whether physical activity is protective for AD. METHODS Summary data of genome-wide association studies on physical activity and AD were used. The primary study population included 21,982 patients with AD and 41,944 cognitively normal controls. Eight single nucleotide polymorphisms (SNPs) known at p < 5 × 10-8 to be associated with average accelerations and 8 SNPs associated at p < 5 × 10-7 with vigorous physical activity (fraction of accelerations >425 milligravities) served as instrumental variables. RESULTS There was no association between genetically predicted average accelerations with the risk of AD (inverse variance weighted odds ratio [OR] per SD increment: 1.03, 95% confidence interval 0.97-1.10, p = 0.332). Genetic liability for fraction of accelerations >425 milligravities was unrelated to AD risk. CONCLUSION The present study does not support a causal association between physical activity and risk of AD.
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Affiliation(s)
- Sebastian E Baumeister
- From Epidemiology (S.E.B.), LMU München, UNIKA-T Augsburg; Independent Research Group, Clinical Epidemiology (S.E.B.), Helmholtz Zentrum München, German Research Center for Environmental Health, Munich; Institute of Epidemiology and Social Medicine (A.K.), University of Münster; Department of Internal Medicine B (M.B.) and Institute for Community Medicine (A.T.), University Medicine Greifswald; DZHK (German Centre for Cardiovascular Research) (M.B., A.T.), Partner Site Greifswald; and Department of Epidemiology and Preventive Medicine (M.F.L., H.B.), University of Regensburg, Germany.
| | - André Karch
- From Epidemiology (S.E.B.), LMU München, UNIKA-T Augsburg; Independent Research Group, Clinical Epidemiology (S.E.B.), Helmholtz Zentrum München, German Research Center for Environmental Health, Munich; Institute of Epidemiology and Social Medicine (A.K.), University of Münster; Department of Internal Medicine B (M.B.) and Institute for Community Medicine (A.T.), University Medicine Greifswald; DZHK (German Centre for Cardiovascular Research) (M.B., A.T.), Partner Site Greifswald; and Department of Epidemiology and Preventive Medicine (M.F.L., H.B.), University of Regensburg, Germany
| | - Martin Bahls
- From Epidemiology (S.E.B.), LMU München, UNIKA-T Augsburg; Independent Research Group, Clinical Epidemiology (S.E.B.), Helmholtz Zentrum München, German Research Center for Environmental Health, Munich; Institute of Epidemiology and Social Medicine (A.K.), University of Münster; Department of Internal Medicine B (M.B.) and Institute for Community Medicine (A.T.), University Medicine Greifswald; DZHK (German Centre for Cardiovascular Research) (M.B., A.T.), Partner Site Greifswald; and Department of Epidemiology and Preventive Medicine (M.F.L., H.B.), University of Regensburg, Germany
| | - Alexander Teumer
- From Epidemiology (S.E.B.), LMU München, UNIKA-T Augsburg; Independent Research Group, Clinical Epidemiology (S.E.B.), Helmholtz Zentrum München, German Research Center for Environmental Health, Munich; Institute of Epidemiology and Social Medicine (A.K.), University of Münster; Department of Internal Medicine B (M.B.) and Institute for Community Medicine (A.T.), University Medicine Greifswald; DZHK (German Centre for Cardiovascular Research) (M.B., A.T.), Partner Site Greifswald; and Department of Epidemiology and Preventive Medicine (M.F.L., H.B.), University of Regensburg, Germany
| | - Michael F Leitzmann
- From Epidemiology (S.E.B.), LMU München, UNIKA-T Augsburg; Independent Research Group, Clinical Epidemiology (S.E.B.), Helmholtz Zentrum München, German Research Center for Environmental Health, Munich; Institute of Epidemiology and Social Medicine (A.K.), University of Münster; Department of Internal Medicine B (M.B.) and Institute for Community Medicine (A.T.), University Medicine Greifswald; DZHK (German Centre for Cardiovascular Research) (M.B., A.T.), Partner Site Greifswald; and Department of Epidemiology and Preventive Medicine (M.F.L., H.B.), University of Regensburg, Germany
| | - Hansjörg Baurecht
- From Epidemiology (S.E.B.), LMU München, UNIKA-T Augsburg; Independent Research Group, Clinical Epidemiology (S.E.B.), Helmholtz Zentrum München, German Research Center for Environmental Health, Munich; Institute of Epidemiology and Social Medicine (A.K.), University of Münster; Department of Internal Medicine B (M.B.) and Institute for Community Medicine (A.T.), University Medicine Greifswald; DZHK (German Centre for Cardiovascular Research) (M.B., A.T.), Partner Site Greifswald; and Department of Epidemiology and Preventive Medicine (M.F.L., H.B.), University of Regensburg, Germany
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47
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Russ TC, Kivimäki M, Batty GD. Response. Chest 2020; 158:834-835. [PMID: 32768074 DOI: 10.1016/j.chest.2020.04.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 04/29/2020] [Indexed: 11/15/2022] Open
Affiliation(s)
- Tom C Russ
- Alzheimer Scotland Dementia Research Centre, Edinburgh, United Kingdom; Edinburgh Dementia Prevention and the Division of Psychiatry, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh, United Kingdom.
| | - Mika Kivimäki
- Department of Epidemiology and Public Health, University College, London, United Kingdom
| | - G David Batty
- Alzheimer Scotland Dementia Research Centre, Edinburgh, United Kingdom; Department of Epidemiology and Public Health, University College, London, United Kingdom
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