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Rabl M, Zullo L, Lewczuk P, Kornhuber J, Karikari TK, Blennow K, Zetterberg H, Bavato F, Quednow BB, Seifritz E, von Gunten A, Clark C, Popp J. Plasma neurofilament light, glial fibrillary acid protein, and phosphorylated tau 181 as biomarkers for neuropsychiatric symptoms and related clinical disease progression. Alzheimers Res Ther 2024; 16:165. [PMID: 39054505 PMCID: PMC11270946 DOI: 10.1186/s13195-024-01526-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Accepted: 07/09/2024] [Indexed: 07/27/2024]
Abstract
BACKGROUND Neuropsychiatric symptoms (NPS) are common in older people, may occur early in the development of dementia disorders, and have been associated with faster cognitive decline. Here, our objectives were to investigate whether plasma levels of neurofilament light chain (NfL), glial fibrillary acid protein (GFAP), and tau phosphorylated at threonine 181 (pTau181) are associated with current NPS and predict future NPS in non-demented older people. Furthermore, we tested whether the presence of NPS combined with plasma biomarkers are useful to predict Alzheimer's disease (AD) pathology and cognitive decline. METHODS One hundred and fifty-one participants with normal cognition (n = 76) or mild cognitive impairment (n = 75) were examined in a longitudinal brain aging study at the Memory Centers, University Hospital of Lausanne, Switzerland. Plasma levels of NfL, GFAP, and pTau181 along with CSF biomarkers of AD pathology were measured at baseline. NPS were assessed through the Neuropsychiatric Inventory Questionnaire (NPI-Q), along with the cognitive and functional performance at baseline and follow-up (mean: 20 months). Different regression and ROC analyses were used to address the associations of interest. RESULTS None of the three plasma biomarker was associated with NPS at baseline. Higher GFAP levels were associated with the presence of NPS at follow-up (OR = 2.8, p = .002) and both, higher NfL and higher GFAP with an increase in the NPI-Q severity score over time (β = 0.25, p = .034 and β = 0.30, p = .013, respectively). Adding NPS and the plasma biomarkers to a reference model improved the prediction of future NPS (AUC 0.72 to 0.88, p = .002) and AD pathology (AUC 0.78 to 0.87, p = .010), but not of cognitive decline (AUC 0.79 to 0.85, p = .081). CONCLUSION Plasma NfL and GFAP are both associated with future NPS and NPS severity change. Considering the presence of NPS along with blood-based AD-biomarkers may improve the prediction of clinical progression of NPS over time and inform clinical decision-making in non-demented older people.
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Affiliation(s)
- Miriam Rabl
- Department of Adult Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Lenggstrasse 31, Zurich, 8032, Switzerland.
| | - Leonardo Zullo
- Old-Age Psychiatry Service, Department of Psychiatry, Lausanne University Hospital, Lausanne, 1005, Switzerland
- Leenaards Memory Clinic, Lausanne University Hospital, Lausanne, 1005, Switzerland
| | - Piotr Lewczuk
- Department of Psychiatry and Psychotherapy, Universitätsklinikum Erlangen and Friedrich-Alexander Universität Erlangen-Nürnberg, 91054, Erlangen, Germany
- Department of Neurodegeneration Diagnostics, Medical University of Białystok, Białystok, 15-269, Poland
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, Universitätsklinikum Erlangen and Friedrich-Alexander Universität Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Thomas K Karikari
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, Sahlgrenska Academy, University of Gothenburg, Mölndal, 431 41, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, 431 41, Sweden
- Department of Psychiatry, School of Medicine, University of Pittsburgh, Pittsburgh, PA, 15219, USA
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, Sahlgrenska Academy, University of Gothenburg, Mölndal, 431 41, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, 431 41, Sweden
- Paris Brain Institute, ICM, Pitié-Salpêtrière Hospital, Sorbonne University, Paris, France
- Neurodegenerative Disorder Research Center, Division of Life Sciences and Medicine, Department of Neurology, Institute on Aging and Brain Disorders, University of Science and Technology of China and First Affiliated Hospital of USTC, Hefei, P.R. China
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, Sahlgrenska Academy, University of Gothenburg, Mölndal, 431 41, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, 431 41, Sweden
- Department of Neurodegenerative Disease, UCL Institute of Neurology, London, WC1E 6BT, UK
- UK Dementia Research Institute at University College London, London, W1T 7NF, UK
- Hong Kong Center for Neurodegenerative Diseases, Clear Water Bay, Hong Kong, 999077, China
- Wisconsin Alzheimer's Disease Research Center, School of Medicine and Public Health, University of Wisconsin, University of Wisconsin-Madison, Madison, WI, 53792, USA
| | - Francesco Bavato
- Department of Adult Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Lenggstrasse 31, Zurich, 8032, Switzerland
- Experimental and Clinical Pharmacopsychology, Department of Adult Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, 8032, Switzerland
| | - Boris B Quednow
- Experimental and Clinical Pharmacopsychology, Department of Adult Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Zurich, 8032, Switzerland
- Neuroscience Center Zurich, University of Zurich and Swiss Federal Institute of Technology Zurich, Zurich, 8057, Switzerland
| | - Erich Seifritz
- Department of Adult Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Lenggstrasse 31, Zurich, 8032, Switzerland
| | - Armin von Gunten
- Old-Age Psychiatry Service, Department of Psychiatry, Lausanne University Hospital, Lausanne, 1005, Switzerland
| | - Christopher Clark
- Department of Adult Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Lenggstrasse 31, Zurich, 8032, Switzerland
| | - Julius Popp
- Department of Adult Psychiatry and Psychotherapy, University Hospital of Psychiatry Zurich, University of Zurich, Lenggstrasse 31, Zurich, 8032, Switzerland
- Old-Age Psychiatry Service, Department of Psychiatry, Lausanne University Hospital, Lausanne, 1005, Switzerland
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Rabl M, Zullo L, Lewczuk P, Kornhuber J, Karikari TK, Blennow K, Zetterberg H, Bavato F, Quednow BB, Seifritz E, von Gunten A, Clark C, Popp J. Plasma neurofilament light, glial fibrillary acid protein, and phosphorylated tau 181 as biomarkers for neuropsychiatric symptoms and related clinical disease progression. RESEARCH SQUARE 2024:rs.3.rs-4116836. [PMID: 38562890 PMCID: PMC10984087 DOI: 10.21203/rs.3.rs-4116836/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
BACKGROUND Neuropsychiatric symptoms (NPS) are common in older people, may occur early in the development of dementia disorders, and have been associated with faster cognitive decline. Here, our objectives were to investigate whether plasma levels of neurofilament light chain (NfL), glial fibrillary acid protein (GFAP), and tau phosphorylated at threonine 181 (pTau181) are associated with current NPS and predict future NPS in non-demented older people. Furthermore, we tested whether the presence of NPS combined with plasma biomarkers are useful to predict Alzheimer's disease (AD) pathology and cognitive decline. METHODS One hundred and fifty-one participants with normal cognition (n=76) or mild cognitive impairment (n=75) were examined in a longitudinal brain aging study at the Memory Centers, University Hospital of Lausanne, Switzerland. Plasma levels of NfL, GFAP, and pTau181 along with CSF biomarkers of AD pathology were measured at baseline. NPS were assessed through the Neuropsychiatric Inventory Questionnaire (NPI-Q), along with the cognitive and functional performance at baseline and follow-up (mean: 20 months). Linear regression and ROC analyses were used to address the associations of interest. RESULTS Higher GFAP levels were associated with NPS at baseline (β=0.23, p=.008). Higher NfL and GFAP levels were associated with the presence of NPS at follow-up (β=0.29, p=.007 and β=0.28, p=.007, respectively) and with an increase in the NPI-Q severity score over time (β=0.23, p=.035 and β=0.27, p=.011, respectively). Adding NPS and the plasma biomarkers to a reference model improved the prediction of future NPS (AUC 0.73 to 0.84, p=.007) and AD pathology (AUC 0.79 to 0.86, p=.006), but not of cognitive decline (AUC 0.79 to 0.84, p=.068). CONCLUSION Plasma GFAP is associated with NPS while NfL and GFAP are both associated with future NPS and NPS severity. Considering the presence of NPS along with blood-based AD-biomarkers may improve diagnosis and prediction of clinical progression of NPS and inform clinical decision-making in non-demented older people.
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Affiliation(s)
- Miriam Rabl
- Department of Adult Psychiatry and Psychotherapy, Psychiatric University Hospital Zurich, University of Zurich
| | - Leonardo Zullo
- Department of Psychiatry, Old Age Psychiatry Service, Lausanne University Hospital
| | - Piotr Lewczuk
- Department of Psychiatry and Psychotherapy, Universitätsklinikum Erlangen and Friedrich-Alexander Universität Erlangen-Nürnberg
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, Universitätsklinikum Erlangen and Friedrich-Alexander Universität Erlangen-Nürnberg
| | - Thomas K Karikari
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, the Sahlgrenska Academy at the University of Gothenburg
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, the Sahlgrenska Academy at the University of Gothenburg
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, the Sahlgrenska Academy at the University of Gothenburg
| | - Francesco Bavato
- Department of Adult Psychiatry and Psychotherapy, Psychiatric University Hospital Zurich, University of Zurich
| | - Boris B Quednow
- Experimental and Clinical Pharmacopsychology, Department of Adult Psychiatry and Psychotherapy, Psychiatric University Hospital Zurich, University of Zurich
| | - Erich Seifritz
- Department of Adult Psychiatry and Psychotherapy, Psychiatric University Hospital Zurich, University of Zurich
| | - Armin von Gunten
- Department of Psychiatry, Old Age Psychiatry Service, Lausanne University Hospital
| | - Christopher Clark
- Department of Adult Psychiatry and Psychotherapy, Psychiatric University Hospital Zurich, University of Zurich
| | - Julius Popp
- Department of Adult Psychiatry and Psychotherapy, Psychiatric University Hospital Zurich, University of Zurich
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Carcavilla-González N, Escalada San Adrián G, Minobes-Molina E, Pàmies-Tejedor S, Roncal-Belzunce V, Atarés-Rodríguez L, García-Navarro JA. A Paradigm Shift on Deinstitutionalization and Dementia Care: A Narrative Review. J Alzheimers Dis 2024; 99:829-841. [PMID: 38759003 DOI: 10.3233/jad-231180] [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: 05/19/2024]
Abstract
This narrative explores the impact of deinstitutionalization policies on the quality of life and care outcomes for individuals with Alzheimer's disease and related dementias. We offer a historical perspective on these policies, their implications on dementia care, and the barriers to deinstitutionalization. The potential benefits of deinstitutionalization, such as improved quality of life and access to community-based support and services, are highlighted. Challenges and controversies surrounding safety, caregiver burden, and resource allocation are also examined. Ethical considerations related to the autonomy and decision-making capacity of people living with dementia are discussed. We present best practices and innovative models in dementia care that balance deinstitutionalization with appropriate care. We further put forth recommendations for future research and policy development in dementia care and deinstitutionalization, emphasizing the need for a balanced approach that respects the autonomy and preferences of people living with dementia while ensuring their safety and well-being.
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Affiliation(s)
- Nuria Carcavilla-González
- Department of Health Sciences, Public University of Navarra, Campus de Arrosadia, Pamplona, Spain
- Spanish Society of Geriatrics and Gerontology, Madrid, Spain
| | | | - Eduard Minobes-Molina
- Spanish Society of Geriatrics and Gerontology, Madrid, Spain
- Research group on Methodology, Methods, Models and Outcomes of Health and Social Sciences (M3O), Faculty of Health Sciences and Welfare. Center for Health and Social Care Research (CESS), University of Vic-Central University of Catalonia (UVIC-UCC), Victoria, Spain
- Institute for Research and Innovation in Life Sciences and Health in Central Catalonia (IRIS-CC), Victoria, Spain
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Hwang Y, Kim J. Influence of caregivers' psychological well-being on the anxiety and depression of care recipients with dementia. Geriatr Nurs 2024; 55:44-51. [PMID: 37972435 DOI: 10.1016/j.gerinurse.2023.10.015] [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: 09/06/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 11/19/2023]
Abstract
This study was conducted to examine how caregivers' psychological well-being influences the anxiety or depression of care recipients with dementia. A secondary data analysis was conducted using 666 dyads of older adults with dementia and their caregivers. The odds that care recipients with dementia would experience anxiety increased when caregivers had a negative relationship with care recipients (OR = 1.22, p = 0.042), lower perception of the positive aspects of caregiving (OR = 0.86, p = 0.047), or anxiety (OR = 2.41, p = 0.036). The odds that care recipients with dementia would experience depression increased when caregivers had a greater perception of the negative aspects of caregiving (OR = 1.15, p = 0.023) or anxiety (OR = 2.21, p = 0.045). Since care recipients with dementia and their caregivers spend considerable time together daily, caregivers' psychological well-being can impact care recipients' anxiety and depression.
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Affiliation(s)
- Yeji Hwang
- Seoul National University, College of Nursing and Research Institute of Nursing Science, Seoul, Korea.
| | - Jayeong Kim
- Seoul National University, College of Nursing and Research Institute of Nursing Science, Seoul, Korea
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Gosselin M, Talbot D, Simard M, Chiu YM, Mésidor M, Boiteau V, Carmichael PH, Sirois C. Classifying Polypharmacy According to Pharmacotherapeutic and Clinical Risks in Older Adults: A Latent Class Analysis in Quebec, Canada. Drugs Aging 2023; 40:573-583. [PMID: 37149556 DOI: 10.1007/s40266-023-01028-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2023] [Indexed: 05/08/2023]
Abstract
INTRODUCTION The simplistic definition of polypharmacy, often designated as the concomitant use of five medications or more, does not distinguish appropriate from inappropriate polypharmacy. Classifying polypharmacy according to varying levels of health risk would help optimise medication use. OBJECTIVE We aimed to characterise different types of polypharmacy among older adults and evaluate their association with mortality and institutionalisation. METHODS Using healthcare databases from the Quebec Integrated Chronic Disease Surveillance System, we selected a community-based random sample of the population ≥ 66 years old covered by the public drug plan. Categorical indicators used to describe polypharmacy included number of medications, potentially inappropriate medications (PIMs), drug-drug interactions, enhanced surveillance medications, complex route of administration medications, anticholinergic cognitive burden (ACB) score and use of blister cards. We used a latent class analysis to subdivide participants into distinct groups of polypharmacy. Their association with 3-year mortality and institutionalisation was assessed with adjusted Cox models. RESULTS In total, 93,516 individuals were included. A four-class model was selected with groups described as (1) no polypharmacy (46% of our sample), (2) high-medium number of medications, low risk (33%), (3) medium number of medications, PIM use with or without high ACB score (8%) and (4) hyperpolypharmacy, complex use, high risk (13%). Using the class without polypharmacy as the reference, all polypharmacy classes were associated with 3-year mortality and institutionalisation, with the most complex/inappropriate classes denoting the highest risk (hazard ratio [HR] [95% confidence interval]: class 3, 70-year-old point estimate for mortality 1.52 [1.30-1.78] and institutionalisation 1.86 [1.52-2.29]; class 4, 70-year-old point estimate for mortality 2.74 [2.44-3.08] and institutionalisation 3.11 [2.60-3.70]). CONCLUSIONS We distinguished three types of polypharmacy with varying pharmacotherapeutic and clinical appropriateness. Our results highlight the value of looking beyond the number of medications to assess polypharmacy.
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Affiliation(s)
- M Gosselin
- Department of Social and Preventive Medicine, Faculty of medicine, Université Laval, Québec, Canada
- Centre d'excellence sur le vieillissement de Québec, Québec, Canada
- VITAM, Centre de recherche en santé durable, Québec, Canada
- CHU de Québec- Université Laval Research Centre, Québec, Canada
| | - D Talbot
- Department of Social and Preventive Medicine, Faculty of medicine, Université Laval, Québec, Canada
- CHU de Québec- Université Laval Research Centre, Québec, Canada
| | - M Simard
- Department of Social and Preventive Medicine, Faculty of medicine, Université Laval, Québec, Canada
- Centre d'excellence sur le vieillissement de Québec, Québec, Canada
- VITAM, Centre de recherche en santé durable, Québec, Canada
- CHU de Québec- Université Laval Research Centre, Québec, Canada
- Institut national de santé publique du Québec, Québec, Canada
| | - Y M Chiu
- VITAM, Centre de recherche en santé durable, Québec, Canada
- Institut national de santé publique du Québec, Québec, Canada
- Faculty of pharmacy, Université Laval, Québec, Canada
| | - M Mésidor
- Department of Social and Preventive Medicine, Faculty of medicine, Université Laval, Québec, Canada
- CHU de Québec- Université Laval Research Centre, Québec, Canada
- Institut national de santé publique du Québec, Québec, Canada
| | - V Boiteau
- Institut national de santé publique du Québec, Québec, Canada
| | - P-H Carmichael
- Centre d'excellence sur le vieillissement de Québec, Québec, Canada
| | - C Sirois
- Centre d'excellence sur le vieillissement de Québec, Québec, Canada.
- VITAM, Centre de recherche en santé durable, Québec, Canada.
- CHU de Québec- Université Laval Research Centre, Québec, Canada.
- Institut national de santé publique du Québec, Québec, Canada.
- Faculty of pharmacy, Université Laval, Québec, Canada.
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Chen YJ, Su JA, Chen JS, Liu CH, Griffiths MD, Tsai HC, Chang CC, Lin CY. Examining the association between neuropsychiatric symptoms among people with dementia and caregiver mental health: are caregiver burden and affiliate stigma mediators? BMC Geriatr 2023; 23:27. [PMID: 36646996 PMCID: PMC9841634 DOI: 10.1186/s12877-023-03735-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 01/06/2023] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Neuropsychiatric disturbances are common manifestations of dementia disorders and are associated with caregiver burden and affiliate stigma. The present study investigated affiliate stigma and caregiver burden as mediators for the association between neuropsychiatric symptoms of people with dementia (PWD) and caregiver mental health such as depression and anxiety. METHODS A cross-sectional survey study was carried out with 261 dyads of PWD and informal caregivers from the outpatient department of a general hospital in Taiwan. The survey included the Caregiver Burden Inventory (CBI), the Affiliate Stigma Scale (ASS), the Taiwanese Depression Questionnaire (TPQ), and the Beck Anxiety Inventory (BAI). Mediation models were tested using the Hayes' PROCESS macro (Model 4 for parallel mediation model; Model 6 for sequentially mediation model). RESULTS Caregiver burden, affiliate stigma, caregiver depression, and caregiver anxiety were significantly associated with neuropsychiatric symptoms. After controlling for several potentially confounding variables, it was found that PWD's neuropsychiatric symptoms, caregiver burden and affiliate stigma significantly explained 52.34% of the variance in caregiver depression and 37.72% of the variance in caregiver anxiety. The parallel mediation model indicated a significantly indirect path from PWD's neuropsychiatric symptoms to caregiver mental health through caregiver burden and affiliate stigma, while the direct effect was not significant. Moreover, there was a directional association between caregiver burden and affiliate stigma in the sequential mediation model. CONCLUSIONS These findings show that it is imperative to improve caregivers' perception of those with dementia to reduce internalized stigma and to improve caregivers' mental health. Implementation of affiliate stigma assessment in clinical practice would allow distinctions to be made between the impact of affiliate stigma and the consequences of caregiver burden to help inform appropriate intervention.
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Affiliation(s)
- Yi-Jung Chen
- grid.64523.360000 0004 0532 3255Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jian-An Su
- grid.454212.40000 0004 1756 1410Department of Psychiatry, Chang Gung Medical Foundation, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan ,grid.145695.a0000 0004 1798 0922School of Medicine, Chang Gung University, Taoyuan, Taiwan ,grid.418428.3Department of Nursing, Chang Gung Institute of Technology, Taoyuan, Taiwan
| | - Jung-Sheng Chen
- grid.411447.30000 0004 0637 1806Department of Medical Research, E-Da Hospital, I-Shou University, Kaohsiung, 82445 Taiwan
| | - Chieh-hsiu Liu
- grid.416911.a0000 0004 0639 1727Department of Family Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan
| | - Mark D. Griffiths
- grid.12361.370000 0001 0727 0669International Gaming Research Unit, Psychology Department, Nottingham Trent University, Nottingham, UK
| | - Hsin-Chi Tsai
- grid.411824.a0000 0004 0622 7222Department of Psychiatry, School of Medicine, Tzu Chi University, Hualien, Taiwan ,grid.414692.c0000 0004 0572 899XDepartment of Psychiatry, Tzu-Chi General Hospital, Hualien, Taiwan
| | - Chih-Cheng Chang
- grid.413876.f0000 0004 0572 9255Department of Psychiatry, Chi Mei Medical Center, Tainan, Taiwan ,grid.411209.f0000 0004 0616 5076Department of Health Psychology, Chang Jung Christian University, Tainan, Taiwan
| | - Chung-Ying Lin
- grid.64523.360000 0004 0532 3255Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan ,grid.412040.30000 0004 0639 0054Biostatistics Consulting Center, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan ,grid.64523.360000 0004 0532 3255Department of Occupational Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan ,grid.412040.30000 0004 0639 0054Department of Public Health, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Moebius HJ, Church KJ. The Case for a Novel Therapeutic Approach to Dementia: Small Molecule Hepatocyte Growth Factor (HGF/MET) Positive Modulators. J Alzheimers Dis 2023; 92:1-12. [PMID: 36683507 PMCID: PMC10041442 DOI: 10.3233/jad-220871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An estimated 6.5 million Americans aged 65 years or older have Alzheimer's disease (AD), which will grow to 13.8 million Americans by 2060. Despite the growing burden of dementia, no fundamental change in drug development for AD has been seen in > 20 years. Currently approved drugs for AD produce only modest symptomatic improvements in cognition with small effect sizes. A growing mismatch exists between the urgent need to develop effective drugs for symptomatic AD and the largely failed search for disease modification. The failure rate of clinical trials in AD is high overall, and in particular for disease-modifying therapies. Research efforts in AD have focused predominantly on amyloid-β and tau pathologies, but limiting clinical research to these "classical hallmarks" of the disease does not address the most urgent patient, caregiver, or societal needs. Rather, clinical research should consider the complex pathophysiology of AD. Innovative approaches are needed that provide outside-the-box thinking, and re-imagine trial design, interventions, and outcomes as well as progress in proteomics and fluid biomarker analytics for both diagnostics and disease monitoring. A new approach offering a highly specific, yet multi-pronged intervention that exerts positive modulation on the HGF/MET neurotrophic system is currently being tested in mid-to-late-stage clinical trials in mild to moderate AD. Findings from such trials may provide data to support novel approaches for development of innovative drugs for treating AD at various disease stages, including among patients already symptomatic, and may offer benefits for other neurodegenerative diseases.
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Rabl M, Clark C, Dayon L, Bowman GL, Popp J. Blood plasma protein profiles of neuropsychiatric symptoms and related cognitive decline in older people. J Neurochem 2023; 164:242-254. [PMID: 36281546 DOI: 10.1111/jnc.15715] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 10/20/2022] [Accepted: 10/20/2022] [Indexed: 01/31/2023]
Abstract
Neuropsychiatric symptoms (NPS) severely affect patients and their caregivers, and are associated with worse long-term outcomes. This study tested the hypothesis that altered protein levels in blood plasma could serve as biomarkers of NPS; and that altered protein levels are associated with persisting NPS and cognitive decline over time. We performed a cross-sectional and longitudinal study in older subjects with cognitive impairment and cognitively unimpaired in a memory clinic setting. NPS were recorded through the Neuropsychiatric Inventory Questionnaire (NPI-Q) while cognitive and functional impairment was assessed using the clinical dementia rating sum of boxes (CDR-SoB) score at baseline and follow-up visits. Shotgun proteomic analysis based on liquid chromatography-mass spectrometry was conducted in blood plasma samples, identifying 420 proteins. The presence of Alzheimer's Disease (AD) pathology was determined by cerebrospinal fluid biomarkers. Eighty-five subjects with a mean age of 70 (±7.4) years, 62% female and 54% with mild cognitive impairment or mild dementia were included. We found 15 plasma proteins with altered baseline levels in participants with NPS (NPI-Q score > 0). Adding those 15 proteins to a reference model based on clinical data (age, CDR-SoB) significantly improved the prediction of NPS (from receiver operating characteristic area under the curve [AUC] 0.75 to AUC 0.91, p = 0.004) with a specificity of 89% and a sensitivity of 74%. The identified proteins additionally predicted both persisting NPS and cognitive decline at follow-up visits. The observed associations were independent of the presence of AD pathology. Using proteomics, we identified a panel of specific blood proteins associated with current and future NPS, and related cognitive decline in older people. These findings show the potential of untargeted proteomics to identify blood-based biomarkers of pathological alterations relevant for NPS and related clinical disease progression.
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Affiliation(s)
- Miriam Rabl
- Department of Geriatric Psychiatry, University Hospital of Psychiatry Zurich, Zurich, Switzerland.,University of Lausanne, Lausanne, Switzerland
| | - Christopher Clark
- Department of Psychiatry, Psychotherapy and Psychosomatics, University of Zurich, Zurich, Switzerland
| | - Loïc Dayon
- Nestlé Institute of Food Safety and Analytical Sciences, Nestlé Research, Lausanne, Switzerland.,Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland.,Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Gene L Bowman
- Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Julius Popp
- Department of Geriatric Psychiatry, University Hospital of Psychiatry Zurich, Zurich, Switzerland.,Department of Psychiatry, Psychotherapy and Psychosomatics, University of Zurich, Zurich, Switzerland.,Old Age Psychiatry, Department of Psychiatry, Lausanne University Hospital, Lausanne, Switzerland
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Madan R, Natadiria M, Berall A, Santiago AT, Schwartz K. A Novel Instrument for Caregivers in Managing Neuropsychiatric Symptoms of Dementia: Baycrest Quick-Response Caregiver Tool TM. Can Geriatr J 2022; 25:368-374. [PMID: 36505911 PMCID: PMC9684021 DOI: 10.5770/cgj.25.603] [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] [Indexed: 12/05/2022] Open
Abstract
Background Family caregivers can experience significant stress related to behaviour changes in persons with dementia (PWD). Approaches to support caregivers with stress management when responding to changes in behaviours are needed. The Baycrest Quick-Response Caregiver ToolTM (BQRCT) was developed to provide caregivers with an online tool that can be used in real time to recognize and manage their emotions when managing neuropsychiatric symptoms of dementia. Methods A mixed-methods approach was used to evaluate the feasibility of this new tool. Family caregivers of persons with dementia received education about managing neuropsychiatric symptoms of dementia through the online tool. Caregiver demographic information and feedback about the tool was obtained through telephone and online surveys. Health-care providers accessed the tool and also provided feedback. Results The 21 caregivers who completed the study found the tool helpful and reported high feasibility that included being able to access, complete, and implement the strategies presented in the tool. The 18 health-care providers found the tool useful and most would recommend it to peers and clients. Participants also provided specific suggestions for improvement, such as including more examples of complex behaviours. Conclusions This tool adds to and complements existing strategies for managing neuropsychiatric symptoms of dementia. Its accessibility through the online platform is especially useful for caregivers who are unable to seek help in person, and for health-care providers and caregivers seeking additional resources.
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Affiliation(s)
- Robert Madan
- Division of Geriatric Psychiatry, Department of Psychiatry, University of Toronto, Toronto, ON,Baycrest Health Sciences, Toronto, ON
| | | | | | - Anna Theresa Santiago
- Biostatistics Department, Princess Margaret Cancer Centre, University Health Network, Toronto, ON
| | - Kenneth Schwartz
- Division of Geriatric Psychiatry, Department of Psychiatry, University of Toronto, Toronto, ON,Baycrest Health Sciences, Toronto, ON
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Bressan V, Snijder A, Hansen H, Koldby K, Andersen KD, Allegretti N, Porcu F, Marsillas S, García A, Palese A. Supporting the Community to Embrace Individuals with Dementia and to Be More Inclusive: Findings of a Conceptual Framework Development Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10335. [PMID: 36011964 PMCID: PMC9407991 DOI: 10.3390/ijerph191610335] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/12/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
The number of community-dwelling people with dementia (PwD) is rising, and the role of their relatives is crucial in addressing and mitigating the implications of dementia on health care systems and on society. We developed a new conceptual framework to promote the collaboration of the community in supporting relatives who are caring for a PwD as well as a range of stakeholders in embracing dementia. A qualitatively driven, multi-method study divided into three phases was performed from 2019 to 2021. A qualitative descriptive study, a mixed-method systematic review and three consensus workshops were conducted, and their results were triangulated. The final version of the Community Collaboration Concept Framework is composed of three main domains based upon seven components: (1) embracing dementia; (2) creating empowerment and a sense of community; (3) collaborating through cocreation and design thinking. The new framework is based on the literature, the synthesis of empirical data and the consensus of a panel of international experts, supporting the global goal of improving community inclusiveness and collaboration. Further studies are needed to confirm its validity, how it should be implemented in practice in various settings and to propose improvements when designing projects based upon it.
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Affiliation(s)
- Valentina Bressan
- Department of Medicine, University of Udine, Viale Ungheria 20, 33100 Udine, Italy
| | - Allette Snijder
- Healthy Ageing Network Northern Netherlands, Peizerweg 140H, 9727 AP Groningen, The Netherlands
| | - Henriette Hansen
- South Denmark European Office, Av. Palmerston 18, 1000 Bruxelles, Belgium
| | - Kim Koldby
- Department for Further Education, University College Lillebaelt, Niels Bohrs Allé 1, 5230 Odense, Denmark
| | - Knud Damgaard Andersen
- Odense Kommune, Department for the Elderly and Persons with Disabilities (ÆHF), Flakhaven 2, 5000 Odense, Denmark
| | - Natalia Allegretti
- Connected Health Alliance CIC, 13A Ballyhoy Avenue, D05 K068 Dublin, Ireland
| | - Federica Porcu
- Connected Health Alliance CIC, 13A Ballyhoy Avenue, D05 K068 Dublin, Ireland
| | - Sara Marsillas
- Matia Gerontological Institute, Pinu Bidea, 35, 20018 Donostia-San Sebastián, Spain
| | - Alvaro García
- Matia Gerontological Institute, Pinu Bidea, 35, 20018 Donostia-San Sebastián, Spain
| | - Alvisa Palese
- Department of Medicine, University of Udine, Viale Ungheria 20, 33100 Udine, Italy
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