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Evren AE, Nuha D, Özkan BNS, Kahraman Ç, Gönülalan EM, Yurttaş L. Design and synthesis of phenoxy methyl-oxadiazole compounds against Alzheimer's disease. Arch Pharm (Weinheim) 2024; 357:e2400115. [PMID: 38657203 DOI: 10.1002/ardp.202400115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/30/2024] [Accepted: 04/03/2024] [Indexed: 04/26/2024]
Abstract
This study examines the synthesis and evaluation of 11 newly developed compounds as potential anti-Alzheimer's agents that occur via cholinesterase and β-secretase inhibition. The compounds were tested for their inhibitory activity against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) using the modified Ellman method. The results showed that several compounds exhibited significant inhibition of AChE, particularly compounds 6d, 7a, and 7e, which demonstrated high inhibitory activity at lower concentrations, with IC50 values of 0.120, 0.039, and 0.063 µM, respectively. However, the compounds showed limited effectiveness against BChE, with only a few compounds exhibiting moderate inhibition. Compound 7e showed an inhibitory effect against BACE-1 close to that of the standard drug. Structural analysis revealed that the compounds with substituted benzothiazole and thiazole moieties exhibited the most promising inhibitory activity. This study provides valuable insights into the potential of these synthesized derivatives as a treatment against Alzheimer's disease. Moreover, the structure, stability, and properties of the active compounds were further investigated using density functional theory calculations. As a final note, the utilization of molecular docking and molecular dynamics simulation studies allowed us to elucidate the action mechanism of the active compounds and gain insights into the structure-activity relationship against AChE and β-secretase proteins. These computational techniques provide valuable information on the binding modes, interactions with target enzymes, dynamic behavior, and conformational changes of the compounds, enabling a comprehensive understanding of their biological activity.
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Affiliation(s)
- Asaf E Evren
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
- Vocational School of Health Services, Department of Pharmacy Services, Bilecik Şeyh Edebali University, Bilecik, Turkey
| | - Demokrat Nuha
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
- Faculty of Pharmacy, University for Business and Technology, Prishtina, Kosovo
| | - Begüm N S Özkan
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Çiğdem Kahraman
- Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
| | - Ekrem M Gönülalan
- Department of Pharmacognosy, Faculty of Pharmacy, Afyonkarahisar Sağlık Bilimleri University, Afyon, Turkey
| | - Leyla Yurttaş
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
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2
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Wang YT, Therriault J, Tissot C, Servaes S, Rahmouni N, Macedo AC, Fernandez-Arias J, Mathotaarachchi SS, Stevenson J, Lussier FZ, Benedet AL, Pascoal TA, Ashton NJ, Zetterberg H, Blennow K, Gauthier S, Rosa-Neto P. Hormone therapy is associated with lower Alzheimer's disease tau biomarkers in post-menopausal females -evidence from two independent cohorts. Alzheimers Res Ther 2024; 16:162. [PMID: 39034389 PMCID: PMC11265084 DOI: 10.1186/s13195-024-01509-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 06/20/2024] [Indexed: 07/23/2024]
Abstract
BACKGROUND Females represent approximately 70% of the Alzheimer's disease (AD) cases and the literature has proposed a connection between the decreased estrogen levels during menopause and an increased AD risk. Previous investigations have predominantly focused on assessing how hormone therapy (HT) affects the likelihood of AD development and cognitive deterioration. However, as the research framework has shifted toward a biomarker-defined AD and alterations in specific biomarkers could take place years before cognitive decline becomes discernible, it is crucial to examine how HT influences AD biomarkers. The main goal of this study was to evaluate the impact of HT on AD biomarker-informed pathophysiology in both cognitively unimpaired (CU) and cognitively impaired (CI) post-menopausal females across the aging and AD spectrum. METHODS This cross-sectional study included post-menopausal females without HT history (HT-) and with HT (HT+) at the time of PET imaging assessment from two cohorts: the Translational Biomarkers in Aging and Dementia (TRIAD) cohort, and the Alzheimer's Disease Neuroimaging Initiative (ADNI). Participants underwent magnetic resonance imaging (MRI), positron emission tomography (PET) and biofluid collection. Voxel-based t-tests were performed to assess the differences in amyloid-β (Aβ) and tau neurofibrillary tangles (NFTs) loads between HT- and HT + females. Linear regression models with interaction terms were also conducted to examine the interactive effects of HT and Aβ-PET on regional tau-PET. RESULTS HT + females demonstrated significantly lower tau-PET standardized uptake value ratio (SUVR) in Braak I-II ROIs (P < 0.05, Hedges' g = 0.73), Braak III-IV ROIs (P < 0.0001, Hedges' g = 0.74) and Braak V-VI ROIs (P < 0.0001, Hedges' g = 0.69) compared to HT- females. HT + females also showed significantly lower CSF p-tau181 (P < 0.001) and plasma p-tau181 (P < 0.0001) concentrations. Additionally, results from multivariate linear regression models indicated that HT interacts with cortical Aβ and is associated with lower regional NFT load. CONCLUSIONS Overall, findings from this observational study suggest that HT is associated with lower tau neuroimaging and fluid biomarkers in postmenopausal females. Due to the close link between tau and cognition, this study highlights the need for large randomized controlled trials designed to systemically study the influences of HT on AD biomarkers and disease progression.
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Affiliation(s)
- Yi-Ting Wang
- Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Canada
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Canada
| | - Joseph Therriault
- Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Canada
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Canada
| | - Cécile Tissot
- Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Canada
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Canada
| | - Stijn Servaes
- Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Canada
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Canada
| | - Nesrine Rahmouni
- Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Canada
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Canada
| | - Arthur Cassa Macedo
- Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Canada
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Canada
| | - Jaime Fernandez-Arias
- Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Canada
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Canada
| | - Sulantha S Mathotaarachchi
- Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Canada
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Canada
| | - Jenna Stevenson
- Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Canada
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Canada
| | - Firoza Z Lussier
- Department of Neurology and Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | - Andréa L Benedet
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
| | - Tharick A Pascoal
- Department of Neurology and Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | - Nicholas J Ashton
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
- Centre for Age-Related Medicine, Stavanger University Hospital, Stavanger, Norway
- Institute of Psychiatry, Psychology and Neuroscience, Maurice Wohl Institute Clinical Neuroscience Institute, King's College London, London, UK
- NIHR Biomedical Research Centre for Mental Health and Biomedical Research Unit for Dementia at South London and Maudsley NHS Foundation, London, UK
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London, UK
- UK Dementia Research Institute at UCL, London, UK
- Hong Kong Center for Neurodegenerative Diseases, Clear Water Bay, Hong Kong, China
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, USA
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Serge Gauthier
- Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Canada
| | - Pedro Rosa-Neto
- Translational Neuroimaging Laboratory, McGill Research Centre for Studies in Aging, Montreal, Canada.
- Department of Neurology and Neurosurgery, Faculty of Medicine, McGill University, Montreal, Canada.
- Montreal Neurological Institute, Montreal, QC, Canada.
- The McGill University Research Centre for Studies in Aging, 6875 LaSalle Boulevard, H4H 1R3, Montreal, QC, Canada.
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3
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Liu Y, He B, Du K, Zheng J, Ke D, Mo W, Li Y, Jiang T, Xiong R, Sun F, Zhao S, Wei W, Xu Z, Zhang S, Li S, Wang X, Zhou Q, Ye J, Liang Y, Lin H, Liu Y, Chen L, Zhang H, Zhang Y, Gao Y, Wang JZ. Periphery Biomarkers Predicting Conversion of Type 2 Diabetes to Pre-Alzheimer-Like Cognitive Decline: A Multicenter Follow-Up Study. J Alzheimers Dis 2024:JAD240455. [PMID: 39058442 DOI: 10.3233/jad-240455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2024]
Abstract
Background The prevalence of Alzheimer's disease (AD) is increasing, therefore, identifying biomarkers to predict those vulnerable to AD is imperative. Type 2 diabetes (T2D) serves as an independent risk factor for AD. Early prediction of T2D patients who may be more susceptible to AD, so as to achieve early intervention, is of great significance to reduce the prevalence of AD. Objective To establish periphery biomarkers that could predict conversion of T2D into pre-AD-like cognitive decline. Methods A follow-up study was carried out from 159 T2D patients at baseline. The correlations of cognitive states (by MMSE score) with multi-periphery biomarkers, including APOE genotype, plasma amyloid-β level, platelet GSK-3β activity, and olfactory score were analyzed by logistic regression. ROC curve was used for establishing the prediction model. Additionally, MRI acquired from 38 T2D patients for analyzing the correlation among cognitive function, biomarkers and brain structure. Results Compared with the patients who maintained normal cognitive functions during the follow-up period, the patients who developed MCI showed worse olfactory function, higher platelet GSK-3β activity, and higher plasma Aβ42/Aβ40 ratio. We conducted a predictive model which T2D patients had more chance of suffering from pre-AD-like cognitive decline. The MRI data revealed MMSE scores were positively correlated with brain structures. However, platelet GSK-3β activity was negatively correlated with brain structures. Conclusions Elevated platelet GSK-3β activity and plasma Aβ42/Aβ40 ratio with reduced olfactory function are correlated with pre-AD-like cognitive decline in T2D patients, which used for predicting which T2D patients will convert into pre-AD-like cognitive decline in very early stage.
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Affiliation(s)
- Yanchao Liu
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Benrong He
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Emergency of General Hospital of Central Theater Command, Wuhan, China
| | - Kai Du
- Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing, China
- National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Jie Zheng
- Neuroscience Research Institute and Department of Neurobiology, School of Basic Medical Sciences, Peking University. Key Laboratory for Neuroscience, Ministry of Education/National Health Commission, Peking University, Beijing, China
| | - Dan Ke
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wen Mo
- Health Service Center of Jianghan District, Wuhan, China
| | - Yanni Li
- Health Service Center of Jianghan District, Wuhan, China
| | - Tao Jiang
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Rui Xiong
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fei Sun
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shi Zhao
- Department of Endocrinology, the Central Hospital of Wuhan, Wuhan, China
| | - Wei Wei
- Department of Endocrinology, the Central Hospital of Wuhan, Wuhan, China
| | - Zhipeng Xu
- Department of Neurology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Shujuan Zhang
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shihong Li
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Wang
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiuzhi Zhou
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jinwang Ye
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi Liang
- Department of Radiology, Wuhan Brain Hospital, Wuhan, China
| | - Hao Lin
- Department of Radiology, Wuhan Brain Hospital, Wuhan, China
| | - Yong Liu
- Brainnetome Center, Institute of Automation, Chinese Academy of Sciences, Beijing, China
- National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China
| | - Liangkai Chen
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huaqiu Zhang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yao Zhang
- Li-Yuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yang Gao
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Jian-Zhi Wang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Department of Pathophysiology, School of Basic Medicine, Ministry of Education Key Laboratory for Neurological Disorders, Hubei Key Laboratory for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
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Guo R, Shen X, Ealing J, Zhou J, Lu J, Ning Y. Efficacy and safety of acupuncture for cognitive impairment in Alzheimer's disease: a systematic review and meta-analysis. FRONTIERS IN DEMENTIA 2024; 3:1380221. [PMID: 39081600 PMCID: PMC11285646 DOI: 10.3389/frdem.2024.1380221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 04/22/2024] [Indexed: 08/02/2024]
Abstract
Objective To systematically evaluate the efficacy of acupuncture in the treatment of cognitive impairment in Alzheimer's disease (AD) by meta-analysis, in order to provide evidence-based evidence for the application of acupuncture therapy in the clinical process of AD. Methods From the establishment of the database to December 31, 2022, China Biomedical Literature Database (CBM), China National Knowledge Network (CNKI), VIP database, WanFang Database, Pubmed, Embase and Cochrane Library Database were systematically searched. To collect published randomized controlled clinical trials (RCTS) of acupuncture in the treatment of cognitive impairment in AD. The subjects in the intervention group were given acupuncture alone or combined with other treatments the same as the control group; the control group received conventional Western medicine treatment. The main outcome indicators of the study were cognitive function assessment of subjects, including: Simple Mental State Examination Scale (MMSE), Assessment of daily Living Ability Scale (ADL), Alzheimer's Disease Cognitive Function Assessment Scale (ADAS-Cog), TCM syndrome score (SDSD), Montreal Cognitive Test (MoCA), Secondary outcome indicators were the occurrence of adverse reactions. Literature screening, data extraction, and quality evaluation of the included literature were performed independently by two researchers, according to bias risk assessment tools recommended in the Cochrane manual. Data were analyzed by RevMan5.3 software. Dichotomous variables were represented by risk ratio (OR) and 95% CI, and continuity variables were represented by mean difference (MD) and 95% CI. For heterogeneity analysis, when P > 0.1 and I 2 ≤ 50%, fixed effect model was applied. When P ≤ 0.1 and I 2 > 50%, the random effects model is applied. Results A total of 1,172 eligible subjects were included in 18 RCTS, including 595 in the intervention group and 577 in the control group. The results of meta-analysis are as follows: acupuncture intervention group improved MMSE [MD = 1.67, 95% CI (0.94, 2.41), P < 0.00001], ADL [MD = -1.18, 95% CI (-3.09, 0.72), P = 0.22], ADAS-Cog [MD = 3.31, 95% CI (5.84, 0.78), P = 0.01], SDSD [MD = 2.40, 95% CI (3.53, 1.26), P < 0.0001], MoCA [MD = 4.80, 95% CI (3.74, 5.86), P = 0.04] were better than the control group. No serious adverse reactions related to acupuncture were observed in the intervention group, and the incidence and severity of adverse reactions were lower than those in the control group, with statistical significance [OR = 0.17, 95% CI (0.04, 0.67), P = 0.01]. Conclusion Existing data show that acupuncture therapy has certain advantages in improving cognitive dysfunction and improving self-care ability of patients with Alzheimer's disease. However, due to the small number of RCTS and cases evaluating the efficacy of acupuncture, and the possibility of measurement bias and selectivity bias in included studies, it is still unable to conduct high-intensity demonstration on its effectiveness. Further large-scale, high-quality randomized, double-blind controlled trials are needed to evaluate its efficacy. Systematic Review Registration https://inplasy.com/inplasy-2021-12-0125/, identifier: INPLASY2021120125.
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Affiliation(s)
- Ruyue Guo
- Department of Encephalopathy, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China
- The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China
| | - Xiaoming Shen
- The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China
| | - John Ealing
- Salford Royal Hospital, Salford, United Kingdom
| | - Jiao Zhou
- Department of Encephalopathy, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China
- The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China
| | - Jin Lu
- Department of Encephalopathy, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China
- The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China
| | - Yunfan Ning
- Department of Encephalopathy, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China
- The First Clinical Medical College of Henan University of Chinese Medicine, Zhengzhou, China
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Ma R, Feng XY, Tang JJ, Ha W, Shi YP. 5α-Epoxyalantolactone from Inula macrophylla attenuates cognitive deficits in scopolamine-induced Alzheimer's disease mice model. NATURAL PRODUCTS AND BIOPROSPECTING 2024; 14:39. [PMID: 38954263 PMCID: PMC11219692 DOI: 10.1007/s13659-024-00462-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Accepted: 06/26/2024] [Indexed: 07/04/2024]
Abstract
Alzheimer's disease (AD) is a complex neurodegenerative condition. 5α-epoxyalantolactone (5α-EAL), a eudesmane-type sesquiterpene isolated from the herb of Inula macrophylla, has various pharmacological effects. This work supposed to investigate the improved impact of 5α-EAL on cognitive impairment. 5α-EAL inhibited the generation of nitric oxide (NO) in BV-2 cells stimulated with lipopolysaccharide (LPS) with an EC50 of 6.2 μM. 5α-EAL significantly reduced the production of prostaglandin E2 (PGE2) and tumor necrosis factor-α (TNF-α), while also inhibiting the production of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) proteins. The ability of 5α-EAL to penetrate the blood-brain barrier (BBB) was confirmed via a parallel artificial membrane permeation assay. Scopolamine (SCOP)-induced AD mice model was employed to assess the improved impacts of 5α-EAL on cognitive impairment in vivo. After the mice were pretreated with 5α-EAL (10 and 30 mg/kg per day, i.p.) for 21 days, the behavioral experiments indicated that the administration of the 5α-EAL could alleviate the cognitive and memory impairments. 5α-EAL significantly reduced the AChE activity in the brain of SCOP-induced AD mice. In summary, these findings highlight the beneficial effects of the natural product 5α-EAL as a potential bioactive compound for attenuating cognitive deficits in AD due to its pharmacological profile.
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Affiliation(s)
- Rui Ma
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicines of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou, 730000, People's Republic of China
| | - Xu-Yao Feng
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, No. 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Jiang-Jiang Tang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, No. 3 Taicheng Road, Yangling, 712100, Shaanxi, China
| | - Wei Ha
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicines of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou, 730000, People's Republic of China.
| | - Yan-Ping Shi
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicines of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou, 730000, People's Republic of China.
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Barzegar Behrooz A, Latifi‐Navid H, Lotfi J, Khodagholi F, Shojaei S, Ghavami S, Fahanik Babaei J. CSF amino acid profiles in ICV-streptozotocin-induced sporadic Alzheimer's disease in male Wistar rat: a metabolomics and systems biology perspective. FEBS Open Bio 2024; 14:1116-1132. [PMID: 38769074 PMCID: PMC11216934 DOI: 10.1002/2211-5463.13814] [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: 03/05/2024] [Revised: 03/19/2024] [Accepted: 04/24/2024] [Indexed: 05/22/2024] Open
Abstract
Alzheimer's disease (AD) is an increasingly important public health concern due to the increasing proportion of older individuals within the general population. The impairment of processes responsible for adequate brain energy supply primarily determines the early features of the aging process. Restricting brain energy supply results in brain hypometabolism prior to clinical symptoms and is anatomically and functionally associated with cognitive impairment. The present study investigated changes in metabolic profiles induced by intracerebroventricular-streptozotocin (ICV-STZ) in an AD-like animal model. To this end, male Wistar rats received a single injection of STZ (3 mg·kg-1) by ICV (2.5 μL into each ventricle for 5 min on each side). In the second week after receiving ICV-STZ, rats were tested for cognitive performance using the Morris Water Maze test and subsequently prepared for positron emission tomography (PET) to confirm AD-like symptoms. Tandem Mass Spectrometry (MS/MS) analysis was used to detect amino acid changes in cerebrospinal fluid (CFS) samples. Our metabolomics study revealed a reduction in the concentrations of various amino acids (alanine, arginine, aspartic acid, glutamic acid, glycine, isoleucine, methionine, phenylalanine, proline, serine, threonine, tryptophane, tyrosine, and valine) in CSF of ICV-STZ-treated animals as compared to controls rats. The results of the current study indicate amino acid levels could potentially be considered targets of nutritional and/or pharmacological interventions to interfere with AD progression.
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Affiliation(s)
- Amir Barzegar Behrooz
- Electrophysiology Research Center, Neuroscience InstituteTehran University of Medical SciencesIran
- Department of Human Anatomy and Cell Science, College of MedicineUniversity of ManitobaWinnipegCanada
| | - Hamid Latifi‐Navid
- Electrophysiology Research Center, Neuroscience InstituteTehran University of Medical SciencesIran
- Department of Molecular MedicineNational Institute of Genetic Engineering and BiotechnologyTehranIran
- School of Biological SciencesInstitute for Research in Fundamental Sciences (IPM)TehranIran
| | - Jabar Lotfi
- Growth and Development Research CenterTehran University of Medical SciencesIran
| | - Fariba Khodagholi
- Neuroscience Research CenterShahid Beheshti University of Medical SciencesTehranIran
| | - Shahla Shojaei
- Department of Human Anatomy and Cell Science, College of MedicineUniversity of ManitobaWinnipegCanada
| | - Saeid Ghavami
- Department of Human Anatomy and Cell Science, College of MedicineUniversity of ManitobaWinnipegCanada
- Faculty of Medicine in ZabrzeUniversity of Technology in KatowiceZabrzePoland
- Research Institute of Oncology and HematologyCancer Care Manitoba‐University of ManitobaWinnipegCanada
- Children Hospital Research Institute of ManitobaUniversity of ManitobaWinnipegCanada
| | - Javad Fahanik Babaei
- Electrophysiology Research Center, Neuroscience InstituteTehran University of Medical SciencesIran
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7
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Green AR, Quiles R, Daddato AE, Merrey J, Weffald L, Gleason K, Xue QL, Swarthout M, Feeser S, Boyd CM, Wolff JL, Blinka MD, Libby AM, Boxer RS. Pharmacist-led telehealth deprescribing for people living with dementia and polypharmacy in primary care: A pilot study. J Am Geriatr Soc 2024; 72:1973-1984. [PMID: 38488757 PMCID: PMC11226386 DOI: 10.1111/jgs.18867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 02/08/2024] [Accepted: 02/18/2024] [Indexed: 03/23/2024]
Abstract
BACKGROUND People living with dementia (PLWD) have complex medication regimens, exposing them to increased risk of harm. Pragmatic deprescribing strategies that align with patient-care partner goals are needed. METHODS A pilot study of a pharmacist-led intervention to optimize medications with patient-care partner priorities, ran May 2021-2022 at two health systems. PLWD with ≥7 medications in primary care and a care partner were enrolled. After an introductory mailing, dyads were randomized to a pharmacist telehealth intervention immediately (intervention) or delayed by 3 months (control). Feasibility outcomes were enrollment, intervention completion, pharmacist time, and primary care provider (PCP) acceptance of recommendations. To refine pragmatic data collection protocols, we assessed the Medication Regimen Complexity Index (MRCI; primary efficacy outcome) and the Family Caregiver Medication Administration Hassles Scale (FCMAHS). RESULTS 69 dyads enrolled; 27 of 34 (79%) randomized to intervention and 28 of 35 (80%) randomized to control completed the intervention. Most visits (93%) took more than 20 min and required multiple follow-up interactions (62%). PCPs responded to 82% of the pharmacists' first messages and agreed with 98% of recommendations. At 3 months, 22 (81%) patients in the intervention and 14 (50%) in the control had ≥1 medication discontinued; 21 (78%) and 12 (43%), respectively, had ≥1 new medication added. The mean number of medications decreased by 0.6 (3.4) in the intervention and 0.2 (1.7) in the control, reflecting a non-clinically meaningful 1.0 (±12.4) point reduction in the MRCI among intervention patients and a 1.2 (±12.9) point increase among control. FCMAHS scores decreased by 3.3 (±18.8) points in the intervention and 2.5 (±14.4) points in the control. CONCLUSION Though complex, pharmacist-led telehealth deprescribing is feasible and may reduce medication burden in PLWD. To align with patient-care partner goals, pharmacists recommended deprescribing and prescribing. If scalable, such interventions may optimize goal-concordant care for PLWD.
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Affiliation(s)
- Ariel R Green
- Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Rosalphie Quiles
- Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Andrea E Daddato
- Kaiser Permanente Colorado Institute for Health Research, Aurora, Colorado, USA
| | | | - Linda Weffald
- Kaiser Permanente Colorado Institute for Health Research, Aurora, Colorado, USA
- Department of Clinical Pharmacy, Kaiser Permanente Colorado, Aurora, Colorado, USA
| | - Kathy Gleason
- Kaiser Permanente Colorado Institute for Health Research, Aurora, Colorado, USA
| | - Qian-Li Xue
- Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Johns Hopkins Center on Aging and Health, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Scott Feeser
- Johns Hopkins Community Physicians, Baltimore, Maryland, USA
| | - Cynthia M Boyd
- Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jennifer L Wolff
- Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Marcela D Blinka
- Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Johns Hopkins Center on Aging and Health, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Anne M Libby
- Department of Emergency Medicine, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Rebecca S Boxer
- Davis Department of Medicine, University of California, Sacramento, California, USA
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8
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Yang J, Shen N, Shen J, Yang Y, Li HL. Complicated Role of Post-translational Modification and Protease-Cleaved Fragments of Tau in Alzheimer's Disease and Other Tauopathies. Mol Neurobiol 2024; 61:4712-4731. [PMID: 38114762 PMCID: PMC11236937 DOI: 10.1007/s12035-023-03867-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: 09/01/2023] [Accepted: 12/07/2023] [Indexed: 12/21/2023]
Abstract
Tau, a microtubule-associated protein predominantly localized in neuronal axons, plays a crucial role in promoting microtubule assembly, stabilizing their structure, and participating in axonal transport. Perturbations in tau's structure and function are implicated in the pathogenesis of neurodegenerative diseases collectively known as tauopathies, the most common disorder of which is Alzheimer's disease (AD). In tauopathies, it has been found that tau has a variety of post-translational modification (PTM) abnormalities and/or tau is cleaved into a variety of fragments by some specific proteolytic enzymes; however, the precise contributions of these abnormal modifications and fragments to disease onset and progression remain incompletely understood. Herein, we provide an overview about the involvement of distinctive abnormal tau PTMs and different tau fragments in the pathogenesis of AD and other tauopathies and discuss the involvement of proteolytic enzymes such as caspases, calpains, and asparagine endopeptidase in mediating tau cleavage while also addressing the intercellular transmission role played by tau. We anticipate that further exploration into PTMs and fragmented forms of tau will yield valuable insights for diagnostic approaches and therapeutic interventions targeting AD and other related disorders.
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Affiliation(s)
- Jie Yang
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Naiting Shen
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jianying Shen
- Department of Histology and Embryology, School of Basic Medicine, Key Laboratory of Education Ministry, Hubei Province of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Ying Yang
- Department of Pathophysiology, School of Basic Medicine, Key Laboratory of Education Ministry, Hubei Province of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Hong-Lian Li
- Department of Histology and Embryology, School of Basic Medicine, Key Laboratory of Education Ministry, Hubei Province of China for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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9
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Mohammadi A, Mohammadi M, Almasi‐Dooghaee M, Mirmosayyeb O. Neutrophil to lymphocyte ratio in Alzheimer's disease: A systematic review and meta-analysis. PLoS One 2024; 19:e0305322. [PMID: 38917167 PMCID: PMC11198755 DOI: 10.1371/journal.pone.0305322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 05/28/2024] [Indexed: 06/27/2024] Open
Abstract
BACKGROUND The Neutrophil-to-Lymphocyte Ratio (NLR) is a clinical indicator of peripheral inflammation that is easily accessible. It is worth noting that the formation of amyloid-β (Aβ) plaques and neurofibrillary tangles has been linked to inflammation and immune dysregulation. The main objective of this systematic review and meta-analysis is to comprehensively evaluate the existing body of research concerning the NLR in the context of Alzheimer's disease (AD) and mild cognitive impairment (MCI). METHOD We conducted a comprehensive online search and included studies that evaluated the NLR in 1) patients with AD or MCI and 2) healthy control (HC) participants. We also pooled mean and standard deviation (SD) data for each group. RESULTS Ultimately, 12 studies encompassed 1,309 individuals diagnosed with AD with mean NLR levels of 2.68, 1,929 individuals with MCI with mean NLR levels of 2.42, and 2,064 HC with mean NLR levels of 2.06 were included in this systematic review and meta-analysis. The mean NLR was 0.59 higher in AD patients compared to HC participants (mean difference (MD) = 0.59 [0.38; 0.80]). Similarly, the mean NLR was higher in AD than MCI patients (MD = 0.23 [0.13; 0.33]). Additionally, the mean NLR was higher in individuals with MCI compared to HC participants (MD = 0.37 [0.22; 0.52]). In the subgroup meta-analysis based on the Mini-Mental State Examination (MMSE), AD patients with lower MMSE scores (using a cut-off of 20) exhibited significantly higher mean NLR (3.10 vs. 2.70, with a p-value for subgroup differences < 0.01). CONCLUSION The NLR, which serves as a marker of peripheral inflammation, shows increased levels in individuals with AD and MCI compared to HC participants. Furthermore, our study indicates that NLR levels are significantly higher in AD than MCI. Additionally, our novel finding suggests significantly higher NLR levels among AD patients with more severe cognitive decline compared to AD patients with less severe cognitive decline. So, it can be concluded that the higher cognitive decline in humans is accompanied by higher NLR levels. Further longitudinal researches are needed to explore more details about the relationship between inflammation and dementia.
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Affiliation(s)
- Aynaz Mohammadi
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Mostafa Almasi‐Dooghaee
- Neurology Department, Firoozgar Hospital, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
- Firoozgar Clinical Research Development Center (FCRDC), Iran University of Medical Sciences, Tehran, Iran
| | - Omid Mirmosayyeb
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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10
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Mızrak HG, Dikmen M, Hanoğlu L, Şakul BU. Investigation of hemispheric asymmetry in Alzheimer's disease patients during resting state revealed BY fNIRS. Sci Rep 2024; 14:13454. [PMID: 38862632 PMCID: PMC11166983 DOI: 10.1038/s41598-024-62281-y] [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: 12/28/2023] [Accepted: 05/15/2024] [Indexed: 06/13/2024] Open
Abstract
Alzheimer's disease (AD) is characterized by the gradual deterioration of brain structures and changes in hemispheric asymmetry. Meanwhile, healthy aging is associated with a decrease in functional hemispheric asymmetry. In this study, functional connectivity analysis was used to compare the functional hemispheric asymmetry in eyes-open resting-state fNIRS data of 16 healthy elderly controls (mean age: 60.4 years, MMSE (Mini-Mental State Examination): 27.3 ± 2.52) and 14 Alzheimer's patients (mean age: 73.8 years, MMSE: 22 ± 4.32). Increased interhemispheric functional connectivity was found in the premotor cortex, supplementary motor cortex, primary motor cortex, inferior parietal cortex, primary somatosensory cortex, and supramarginal gyrus in the control group compared to the AD group. The study revealed that the control group had stronger interhemispheric connectivity, leading to a more significant decrease in hemispheric asymmetry than the AD group. The results show that there is a difference in interhemispheric functional connections at rest between the Alzheimer's group and the control group, suggesting that functional hemispheric asymmetry continues in Alzheimer's patients.
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Affiliation(s)
- Hazel Gül Mızrak
- Department of Anatomy, School of Medicine, Istanbul Medipol University, Istanbul, Turkey
| | - Merve Dikmen
- Regenerative and Restorative Medicine Research Center (REMER), Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey.
- Program of Electroneurophysiology, Vocational School of Health Services, Istanbul Medipol University, Istanbul, Turkey.
| | - Lütfü Hanoğlu
- Regenerative and Restorative Medicine Research Center (REMER), Research Institute for Health Sciences and Technologies (SABITA), Istanbul Medipol University, Istanbul, Turkey
- Department of Neurology, Istanbul Medipol University Training and Research Hospital, Istanbul, Turkey
| | - Bayram Ufuk Şakul
- Department of Anatomy, School of Medicine, Istanbul Medipol University, Istanbul, Turkey
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11
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Aljalal M, Aldosari SA, Molinas M, Alturki FA. Selecting EEG channels and features using multi-objective optimization for accurate MCI detection: validation using leave-one-subject-out strategy. Sci Rep 2024; 14:12483. [PMID: 38816409 PMCID: PMC11139961 DOI: 10.1038/s41598-024-63180-y] [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: 01/29/2024] [Accepted: 05/27/2024] [Indexed: 06/01/2024] Open
Abstract
Effective management of dementia requires the timely detection of mild cognitive impairment (MCI). This paper introduces a multi-objective optimization approach for selecting EEG channels (and features) for the purpose of detecting MCI. Firstly, each EEG signal from each channel is decomposed into subbands using either variational mode decomposition (VMD) or discrete wavelet transform (DWT). A feature is then extracted from each subband using one of the following measures: standard deviation, interquartile range, band power, Teager energy, Katz's and Higuchi's fractal dimensions, Shannon entropy, sure entropy, or threshold entropy. Different machine learning techniques are used to classify the features of MCI cases from those of healthy controls. The classifier's performance is validated using leave-one-subject-out (LOSO) cross-validation (CV). The non-dominated sorting genetic algorithm (NSGA)-II is designed with the aim of minimizing the number of EEG channels (or features) and maximizing classification accuracy. The performance is evaluated using a publicly available online dataset containing EEGs from 19 channels recorded from 24 participants. The results demonstrate a significant improvement in performance when utilizing the NSGA-II algorithm. By selecting only a few appropriate EEG channels, the LOSO CV-based results show a significant improvement compared to using all 19 channels. Additionally, the outcomes indicate that accuracy can be further improved by selecting suitable features from different channels. For instance, by combining VMD and Teager energy, the SVM accuracy obtained using all channels is 74.24%. Interestingly, when only five channels are selected using NSGA-II, the accuracy increases to 91.56%. The accuracy is further improved to 95.28% when using only 8 features selected from 7 channels. This demonstrates that by choosing informative features or channels while excluding noisy or irrelevant information, the impact of noise is reduced, resulting in improved accuracy. These promising findings indicate that, with a limited number of channels and features, accurate diagnosis of MCI is achievable, which opens the door for its application in clinical practice.
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Affiliation(s)
- Majid Aljalal
- Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh, Saudi Arabia.
| | - Saeed A Aldosari
- Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh, Saudi Arabia
| | - Marta Molinas
- Department of Engineering Cybernetics, Norwegian University of Science and Technology, Trondheim, Norway
| | - Fahd A Alturki
- Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh, Saudi Arabia
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12
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Wang Y, Huang Y, Ma A, You J, Miao J, Li J. Natural Antioxidants: An Effective Strategy for the Treatment of Alzheimer's Disease at the Early Stage. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:11854-11870. [PMID: 38743017 DOI: 10.1021/acs.jafc.4c01323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
The critical role of oxidative stress in Alzheimer's disease (AD) has been recognized by researchers recently, and natural antioxidants have been demonstrated to have anti-AD activity in animal models, such as Ginkgo biloba extract, soy isoflavones, lycopene, and so on. This paper summarized these natural antioxidants and points out that natural antioxidants always have multiple advantages which are help to deal with AD, such as clearing free radicals, regulating signal transduction, protecting mitochondrial function, and synaptic plasticity. Based on the available data, we have created a relatively complete pathway map of reactive oxygen species (ROS) and AD-related targets and concluded that oxidative stress caused by ROS is the core of AD pathogenesis. In the prospect, we introduced the concept of a combined therapeutic strategy, termed "Antioxidant-Promoting Synaptic Remodeling," highlighting the integration of antioxidant interventions with synaptic remodeling approaches as a novel avenue for therapeutic exploration.
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Affiliation(s)
- Yifeng Wang
- School of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830000, PR China
| | - Yan Huang
- School of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830000, PR China
| | - Aixia Ma
- School of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830000, PR China
| | - Jiahe You
- School of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830000, PR China
| | - Jing Miao
- School of Pharmaceutical Sciences and Institute of Materia Medica, Xinjiang University, Urumqi, Xinjiang 830000, PR China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Xinjiang University, Urumqi, Xinjiang 830000, PR China
- National Demonstration Center for Experimental Biology Education, Xinjiang University, Urumqi, Xinjiang 830000, PR China
| | - Jinyao Li
- School of Life Science and Technology, Xinjiang University, Urumqi, Xinjiang 830000, PR China
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, Xinjiang University, Urumqi, Xinjiang 830000, PR China
- National Demonstration Center for Experimental Biology Education, Xinjiang University, Urumqi, Xinjiang 830000, PR China
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13
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Chen B, Schneeberger M. Neuro-Adipokine Crosstalk in Alzheimer's Disease. Int J Mol Sci 2024; 25:5932. [PMID: 38892118 PMCID: PMC11173274 DOI: 10.3390/ijms25115932] [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: 04/27/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
The connection between body weight alterations and Alzheimer's disease highlights the intricate relationship between the brain and adipose tissue in the context of neurological disorders. During midlife, weight gain increases the risk of cognitive decline and dementia, whereas in late life, weight gain becomes a protective factor. Despite their substantial impact on metabolism, the role of adipokines in the transition from healthy aging to neurological disorders remains largely unexplored. We aim to investigate how the adipose tissue milieu and the secreted adipokines are involved in the transition between biological and pathological aging, highlighting the bidirectional relationship between the brain and systemic metabolism. Understanding the function of these adipokines will allow us to identify biomarkers for early detection of Alzheimer's disease and uncover novel therapeutic options.
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Affiliation(s)
- Bandy Chen
- Laboratory of Neurovascular Control of Homeostasis, Department of Cellular and Molecular Physiology, Yale School of Medicine, New Haven, CT 06510, USA;
| | - Marc Schneeberger
- Laboratory of Neurovascular Control of Homeostasis, Department of Cellular and Molecular Physiology, Yale School of Medicine, New Haven, CT 06510, USA;
- Wu Tsai Institute for Mind and Brain, Yale University, New Haven, CT 06510, USA
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14
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Padhi D, Baruah P, Ramesh M, Moorthy H, Govindaraju T. Hybrid molecules synergistically mitigate ferroptosis and amyloid-associated toxicities in Alzheimer's disease. Redox Biol 2024; 71:103119. [PMID: 38507972 PMCID: PMC10963859 DOI: 10.1016/j.redox.2024.103119] [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: 01/21/2024] [Revised: 02/22/2024] [Accepted: 03/07/2024] [Indexed: 03/22/2024] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by the build-up of extracellular amyloid β (Aβ) plaques and intracellular neurofibrillary tangles (NFTs). Ferroptosis, an iron (Fe)-dependent form of cell death plays a significant role in the multifaceted AD pathogenesis through generation of reactive oxygen species (ROS), mitochondrial damage, lipid peroxidation, and reduction in glutathione peroxidase 4 (GPX4) enzyme activity and levels. Aberrant liquid-liquid phase separation (LLPS) of tau drives the growth and maturation of NFTs contributing to AD pathogenesis. In this study, we strategically combined the structural and functional properties of gallic acid (GA) and cyclic dipeptides (CDPs) to synthesize hybrid molecules that effectively target both ferroptosis and amyloid toxicity in AD. This innovative approach marks a paradigm shift from conventional therapeutic strategies. This is the first report of a synthetic small molecule (GCTR) that effectively combats ferroptosis, simultaneously restoring enzymatic activity and enhancing cellular levels of its master regulator, GPX4. Further, GCTR disrupts Fe3+-induced LLPS of tau, and aids in attenuation of abnormal tau fibrillization. The synergistic action of GCTR in combating both ferroptosis and amyloid toxicity, bolstered by GPX4 enhancement and modulation of Fe3+-induced tau LLPS, holds promise for the development of small molecule-based novel therapeutics for AD.
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Affiliation(s)
- Dikshaa Padhi
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, Karnataka, 560064, India
| | - Prayasee Baruah
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, Karnataka, 560064, India
| | - Madhu Ramesh
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, Karnataka, 560064, India
| | - Hariharan Moorthy
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, Karnataka, 560064, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bengaluru, Karnataka, 560064, India.
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15
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Zhu QQ, Tian S, Zhang L, Ding HY, Gao YX, Tang Y, Yang X, Zhu Y, Qi M. Altered dynamic amplitude of low-frequency fluctuation in individuals at high risk for Alzheimer's disease. Eur J Neurosci 2024; 59:2391-2402. [PMID: 38314647 DOI: 10.1111/ejn.16267] [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: 03/31/2023] [Revised: 01/12/2024] [Accepted: 01/14/2024] [Indexed: 02/06/2024]
Abstract
The brain's dynamic spontaneous neural activity is significant in supporting cognition; however, how brain dynamics go awry in subjective cognitive decline (SCD) and mild cognitive impairment (MCI) remains unclear. Thus, the current study aimed to investigate the dynamic amplitude of low-frequency fluctuation (dALFF) alterations in patients at high risk for Alzheimer's disease and to explore its correlation with clinical cognitive assessment scales, to identify an early imaging sign for these special populations. A total of 152 participants, including 72 SCD patients, 44 MCI patients and 36 healthy controls (HCs), underwent a resting-state functional magnetic resonance imaging and were assessed with various neuropsychological tests. The dALFF was measured using sliding-window analysis. We employed canonical correlation analysis (CCA) to examine the bi-multivariate correlations between neuropsychological scales and altered dALFF among multiple regions in SCD and MCI patients. Compared to those in the HC group, both the MCI and SCD groups showed higher dALFF values in the right opercular inferior frontal gyrus (voxel P < .001, cluster P < .05, correction). Moreover, the CCA models revealed that behavioural tests relevant to inattention correlated with the dALFF of the right middle frontal gyrus and right opercular inferior frontal gyrus, which are involved in frontoparietal networks (R = .43, P = .024). In conclusion, the brain dynamics of neural activity in frontal areas provide insights into the shared neural basis underlying SCD and MCI.
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Affiliation(s)
- Qin-Qin Zhu
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shui Tian
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ling Zhang
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hong-Yuan Ding
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ya-Xin Gao
- Rehabilitation Center, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, China
| | - Yin Tang
- Department of Medical imaging, Jingjiang People's Hospital, Jingjiang, China
| | - Xi Yang
- School of Rehabilitation Medicine, Nanjing Medical University, Nanjing, China
| | - Yi Zhu
- Rehabilitation Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ming Qi
- Department of Radiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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16
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Liu Q, Wang F, Tan L, Liu L, Hu X. Art therapies and cognitive function in elderly with subjective cognitive decline: a protocol for a network meta-analysis. BMJ Open 2024; 14:e079146. [PMID: 38643016 PMCID: PMC11033635 DOI: 10.1136/bmjopen-2023-079146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 03/18/2024] [Indexed: 04/22/2024] Open
Abstract
INTRODUCTION Subjective cognitive decline means a decline in the subjective perception of self-cognitive function, which is likely to evolve into mild cognitive impairment and dementia. The number of elderly with subjective cognitive decline has increased, bringing huge burdens and challenges to caregivers and society. With the increase in research on art therapies, some of them have gradually been proven to be effective for cognitive function. Therefore, this study aims to summarise the evidence and identify the best art therapy for elderly with subjective cognitive decline. METHODS AND ANALYSIS We will include published randomised controlled trials written in English and Chinese if the intervention is one of the art therapies and applied in people aged 60 and above with subjective cognitive decline. Eight electronic databases, including the Cochrane Central Register of Controlled Trials, PubMed, Web of Science, Elsevier, China BioMedical Literature Database, China National Knowledge Infrastructure, VIP Database and Wanfang Database, will be searched from January 2013 to December 2023. Art therapies will mainly include music therapy, reminiscence therapy, painting therapy, dance therapy, reading therapy, horticultural therapy, museum therapy, calligraphy therapy and so on. The outcome will be cognitive function. Study selection, data extraction and quality assessment will be performed by two reviewers. The risk of bias will be evaluated according to the Cochrane Collaboration's risk-of-bias tool, and the evidence quality will be assessed with the Grading of Recommendations Assessment, Development and Evaluation. Standard pairwise meta-analysis and Bayesian network meta-analysis will be conducted. The probabilities of each art therapy will be ranked based on the surface under the cumulative ranking curve. ETHICS AND DISSEMINATION Ethical approval is not required for reviewing published studies. To provide important evidence for clinicians and guideline developers, the findings of this study will be submitted to a peer-reviewed journal. PROSPERO REGISTRATION NUMBER CRD42023443773.
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Affiliation(s)
- Qian Liu
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
| | - Fang Wang
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
| | - Lixia Tan
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
| | - Li Liu
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
| | - Xiuying Hu
- Innovation Center of Nursing Research, Nursing Key Laboratory of Sichuan Province, West China Hospital, Sichuan University/West China School of Nursing, Sichuan University, Chengdu, Sichuan, China
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17
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AlHarkan KS, Aldhawyan AF, Bahamdan AS, Alqurashi YD, Aldulijan FA, Alsamin SI, Alotaibi JK, Alumran AK. Association between multimorbidity and cognitive decline in the elderly population of the Eastern Province, Saudi Arabia. J Family Community Med 2024; 31:99-106. [PMID: 38800794 PMCID: PMC11114873 DOI: 10.4103/jfcm.jfcm_268_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/25/2024] [Accepted: 02/06/2024] [Indexed: 05/29/2024] Open
Abstract
BACKGROUND Cognitive decline affects the quality of life, and dementia affects independence in daily life activities. Multimorbidity in older adults is associated with a higher risk of cognitive impairment. This research aims to study the relationship between cognitive decline and multimorbidity in the elderly population in the Eastern Province, Saudi Arabia. MATERIALS AND METHODS This cross-sectional research was conducted from July to October 2022 among adults over 60 years. All patients with two or more comorbidities were contacted for a face-to-face interview and cognitive testing to estimate cognitive function by trained family physicians using St. Louis University Mental State Examination. ANOVA and Chi-square test were used to test for statistical significance. Binary logistic regression was used to show the odds of having cognitive impairment and multimorbidity. All tests were performed at 5% level of significance. RESULTS The study involved 343 individuals; majority (74.1%) aged 60-75 years and were males (67.9%). Hypertension, diabetes, and chronic pain were reported by 56%, 48%, and 44% participants, respectively. Thirty percent participants had 3 or more comorbidities. About 36% had mild neurocognitive disorder and 31.2% had dementia. The results showed that age, gender (female), diabetes, stroke, chronic pain, and multimorbidity were significantly associated with cognitive impairment. In our study, hypertension, coronary artery diseases, depression, and anxiety were not significantly associated with risk of cognitive decline. CONCLUSION Our study found that multimorbidity is significantly associated with cognitive decline. Controlling comorbidities and preventing risk factors in midlife could help in delaying the progression of the disease.
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Affiliation(s)
- Khalid S. AlHarkan
- Department of Family and Community Medicine, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Adam F. Aldhawyan
- Department of Family and Community Medicine, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ahmed S. Bahamdan
- Department of Family and Community Medicine, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Yousef D. Alqurashi
- Department of Respiratory Care, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Fajar A. Aldulijan
- Department of Family Medicine, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
| | - Sarah I. Alsamin
- College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Jood K. Alotaibi
- College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Arwa K. Alumran
- Department of Health Information Management, College of Public Health, Imam Abdulrahman Bin Faisal, University, Dammam, Saudi Arabia
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Wang Z, Zhan Q, Tong B, Yang S, Hou B, Huang H, Saykin AJ, Thompson PM, Davatzikos C, Shen L. Distance-weighted Sinkhorn loss for Alzheimer's disease classification. iScience 2024; 27:109212. [PMID: 38433927 PMCID: PMC10906516 DOI: 10.1016/j.isci.2024.109212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 01/27/2024] [Accepted: 02/07/2024] [Indexed: 03/05/2024] Open
Abstract
Traditional loss functions such as cross-entropy loss often quantify the penalty for each mis-classified training sample without adequately considering its distance from the ground truth class distribution in the feature space. Intuitively, the larger this distance is, the higher the penalty should be. With this observation, we propose a penalty called distance-weighted Sinkhorn (DWS) loss. For each mis-classified training sample (with predicted label A and true label B), its contribution to the DWS loss positively correlates to the distance the training sample needs to travel to reach the ground truth distribution of all the A samples. We apply the DWS framework with a neural network to classify different stages of Alzheimer's disease. Our empirical results demonstrate that the DWS framework outperforms the traditional neural network loss functions and is comparable or better to traditional machine learning methods, highlighting its potential in biomedical informatics and data science.
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Affiliation(s)
- Zexuan Wang
- University of Pennsylvania, B301 Richards Building, 3700 Hamilton Walk, Philadelphia, PA 19104, USA
| | - Qipeng Zhan
- University of Pennsylvania, B301 Richards Building, 3700 Hamilton Walk, Philadelphia, PA 19104, USA
| | - Boning Tong
- University of Pennsylvania, B301 Richards Building, 3700 Hamilton Walk, Philadelphia, PA 19104, USA
| | - Shu Yang
- University of Pennsylvania, B301 Richards Building, 3700 Hamilton Walk, Philadelphia, PA 19104, USA
| | - Bojian Hou
- University of Pennsylvania, B301 Richards Building, 3700 Hamilton Walk, Philadelphia, PA 19104, USA
| | - Heng Huang
- University of Maryland, College Park, 8125 Paint Branch Drive, College Park, MD 20742, USA
| | - Andrew J. Saykin
- Indiana University, 355 West 16th Street, Indianapolis, IN 46202, USA
| | - Paul M. Thompson
- University of Southern California, 4676 Admiralty Way, Marina Del Rey, CA 90292, USA
| | - Christos Davatzikos
- University of Pennsylvania, B301 Richards Building, 3700 Hamilton Walk, Philadelphia, PA 19104, USA
| | - Li Shen
- University of Pennsylvania, B301 Richards Building, 3700 Hamilton Walk, Philadelphia, PA 19104, USA
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Yashkin AP, Kolpakov S, Ukraintseva S, Yashin A, Akushevich I. Graves disease is associated with increased risk of clinical Alzheimer's disease: evidence from the Medicare system. Clin Diabetes Endocrinol 2024; 10:11. [PMID: 38317215 PMCID: PMC10840251 DOI: 10.1186/s40842-024-00170-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 01/24/2024] [Indexed: 02/07/2024] Open
Abstract
BACKGROUND Identification of modifiable risk factors for Alzheimer's Disease (AD) onset is an important aspect of controlling the burden imposed by this disease on an increasing number of older U.S. adults. Graves disease (GD), the most common cause of hyperthyroidism in the U.S., has been hypothesized to be associated with increased AD risk, but there is no consensus. In this study, we explore the link between GD and risk of clinical AD. METHODS Cox and Fine-Grey models were applied to a retrospective propensity-score-matched cohort of 19,798 individuals with GD drawn from a nationally representative 5% sample of U.S. Medicare beneficiaries age 65 + over the 1991-2020 period. RESULTS Results showed that the presence of GD was associated with a higher risk of AD (Hazard Ratio [HR]:1.19; 95% Confidence Interval [CI]:1.13-1.26). Competing risk estimates were consistent with these findings (HR:1.14; CI:1.08-1.20) with the magnitude of associated risk varying across subgroups: Male (HR:1.25; CI:1.07-1.47), Female (HR:1.09; CI:1.02-1.16), White (HR:1.11; CI:1.03-1.19), and Black (HR:1.23; CI:1.02-1.49). CONCLUSIONS Our results indicate a robust and consistent association between a diagnosis of GD and a subsequent diagnosis of AD in later stages of life. The precise biological pathways that could potentially connect these two conditions remain unclear as is the role of treatment in this relationship. Replications of these findings on datasets with both biomarkers and laboratory test results, especially in underrepresented groups is vital.
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Affiliation(s)
- Arseniy Pavlovich Yashkin
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Room A115 Bay A, Erwin Mill Building, 2024 W. Main St., PO Box 90420, 27708, Durham, NC, USA.
| | - Stanislav Kolpakov
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Room A115 Bay A, Erwin Mill Building, 2024 W. Main St., PO Box 90420, 27708, Durham, NC, USA
| | - Svetlana Ukraintseva
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Room A115 Bay A, Erwin Mill Building, 2024 W. Main St., PO Box 90420, 27708, Durham, NC, USA
| | - Anatoliy Yashin
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Room A115 Bay A, Erwin Mill Building, 2024 W. Main St., PO Box 90420, 27708, Durham, NC, USA
| | - Igor Akushevich
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Room A115 Bay A, Erwin Mill Building, 2024 W. Main St., PO Box 90420, 27708, Durham, NC, USA
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20
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Tolchin B. Improving Communication Around the Diagnosis of Dementia. Neurol Clin Pract 2024; 14:e200237. [PMID: 38144899 PMCID: PMC10741378 DOI: 10.1212/cpj.0000000000200237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 11/04/2023] [Indexed: 12/26/2023]
Affiliation(s)
- Benjamin Tolchin
- Comprehensive Epilepsy Center, Department of Neurology, Yale University School of Medicine; Yale New Haven Health Center for Clinical Ethics
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21
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Armstrong MJ, Bedenfield N, Rosselli M, Curiel Cid RE, Kitaigorodsky M, Galvin JE, Lachner C, Grant Smith A, de Los Ángeles Ortega M, Mohiuddin Y, Shatzer J, Marasco D, Willis D, Bylund CL. Best Practices for Communicating a Diagnosis of Dementia: Results of a Multi-Stakeholder Modified Delphi Consensus Process. Neurol Clin Pract 2024; 14:e200223. [PMID: 38152063 PMCID: PMC10750429 DOI: 10.1212/cpj.0000000000200223] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 11/04/2023] [Indexed: 12/29/2023]
Abstract
Background and Objectives Many individuals with dementia and their families report not receiving a dementia diagnosis. Previously published standards for delivering a dementia diagnosis are now more than 10 years old and were developed without patient and caregiver input. The objective of this study was to identify best practices for delivering a diagnosis of dementia using existing literature, involvement of diverse stakeholders, and consensus building through a formal modified Delphi approach. Methods We convened a multi-stakeholder working group including a patient, caregivers, Alzheimer's Association staff, and clinicians from diverse backgrounds. The panel used the American Academy of Neurology process for recommendation development, consisting of a half-day workshop and 3 rounds of anonymous modified Delphi voting to achieve consensus. Results The working group convened from May 2022 through January 2023. The group chose to focus statements on a limited number of best practices that can be applied across clinic types. Seven best practice statements achieved consensus after a maximum of 3 rounds of voting. These included the following: (1) Clinicians must show compassion and empathy when delivering a diagnosis of dementia (level A). During dementia diagnosis disclosure, clinicians should (2) ask regarding diagnosis preferences, (3) instill realistic hope, (4) provide practical strategies, (5) provide education and connections to high-quality resources, (6) connect caregivers to support resources, and (7) provide written summaries of the diagnoses, plan, and relevant resources (each level B). Discussion Clinicians need to customize discussion of a dementia diagnosis for individual patients and their caregivers. These 7 best practices provide a diagnosis communication framework that can be implemented across varied clinical settings. Additional strategies, such as using optimal general communication approaches, are also important for dementia diagnosis discussions. Thoughtful application of these best practices is particularly important when caring for individuals from underrepresented communities. Further improving communication regarding dementia diagnoses will require health system changes (e.g., for sufficient time), improved access to specialty dementia care, and clinician training for delivering difficult diagnoses. More research is needed to identify culturally sensitive approaches to discussing dementia diagnoses.
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Affiliation(s)
- Melissa J Armstrong
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - Noheli Bedenfield
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - Monica Rosselli
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - Rosie E Curiel Cid
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - Marcela Kitaigorodsky
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - James E Galvin
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - Christian Lachner
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - Amanda Grant Smith
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - María de Los Ángeles Ortega
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - Yasmin Mohiuddin
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - Julie Shatzer
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - Deann Marasco
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - Dianna Willis
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
| | - Carma L Bylund
- Department of Neurology (MJA, NB, YM), University of Florida College of Medicine; UF Health Fixel Institute for Neurological Diseases (MJA, NB, YM), Gainesville; Department of Psychology (MR), Florida Atlantic University, Davie; Department of Psychiatry and Behavioral Sciences (RECC), University of Miami Miller School of Medicine; FL Neuro-Health (MK), Miami; Comprehensive Center for Brain Health (JEG), Department of Neurology, University of Miami Miller School of Medicine, Boca Raton; Department of Neurology (CL); Department of Psychiatry and Psychology (CL), Mayo Clinic, Jacksonville; Byrd Alzheimer's Institute (AGS); Department of Psychiatry and Behavioral Neurosciences (AGS), Morsani College of Medicine, University of South Florida, Tampa; Louis and Anne Green Memory and Wellness Center (MÁO), Christine E. Lynn College of Nursing, Charles E. Schmidt College of Medicine, Florida Atlantic University, Boca Raton; Alzheimer's Association (JS, DM), Florida Region, Clearwater; Department of Health Outcomes and Biomedical Informatics (CLB), University of Florida College of Medicine, Gainesville, FL; and [N/A - caregiver representative] (DW)
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Zhang H, Chen W, Li Z, Huang Q, Wen J, Chang S, Pei H, Ma L, Li H. Huannao Yicong decoction ameliorates cognitive deficits in APP/PS1/tau triple transgenic mice by interfering with neurotoxic interaction of Aβ-tau. JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:116985. [PMID: 37532075 DOI: 10.1016/j.jep.2023.116985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/27/2023] [Accepted: 07/30/2023] [Indexed: 08/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Huannao Yicong decoction (HYD) has been used in the study of AD for many years, which consists of Polygonum multiflorum Thunb., Panax ginseng C.A.Mey., Acorus gramineus Aiton, Coptis chinensis Franch., and Conioselinum acuminatum (Franch.) Lavrova. Previous studies have found that HYD could reduce β-Amyloid (Aβ) deposition and tau hyperphosphorylation which are the two critical pathological factors of AD. However, the mechanism of the neurotoxic interaction between Aβ and tau in AD remains unclear. Thus, the underlying mechanisms for HYD improving cognitive function of AD by interfering with the neurotoxic interaction between Aβ and tau remain to be explored. AIM OF THE STUDY The main objective of this study is to clarify the specific mechanisms of HYD on interfering with the neurotoxic interaction between Aβ and tau of AD both in vivo and in vitro. MATERIALS AND METHODS APP/PS1/tau triple transgenic mice were randomly divided into 4 groups, namely model group, memantine group, HYD low-dose group (HYD-L), and HYD high-dose group (HYD-H) with 28 mice in each group, while 28 C57BL/6J mice as the control group. Gavage was applied to all the mice daily for 24 weeks. SH-SY5Y model cells overexpressing Aβ and tau proteins as the intervention object in vitro experiments. Morris water maze was used to observe the learning and memory ability of APP/PS1/tau mice. Aβ deposition was detected by immunohistochemistry, and the levels of Aβ1-40 and Aβ1-42 were detected by enzyme-linked immunosorbent assay (ELISA). Neurofibrillary tangles (NFTs) were observed by silver staining and the levels of phosphorylated tau proteins were detected by Western blot. The GSK-3β and CDK-5 mRNA expression were detected by real-time polymerase chain reaction (RT-PCR). Besides, the levels of PSD95, GluR1, NR2A, and NR2B were detected by Western blot. Meanwhile, cell experiments were performed to further verify the effect of HYD on tau phosphorylation related kinases (GSK-3β, CDK-5, and PP2A), which further to clarify the mechanism of HYD intervention on the neurotoxic interaction between Aβ and tau. RESULTS HYD improved the learning and memory ability of APP/PS1/tau mice. HYD decreased the levels of Aβ1-40 and Aβ1-42 and inhibited tau hyperphosphorylation, which reduced Aβ deposition and NFTs forming. In addition, HYD inhibited the activity of kinases GSK-3β and CDK-5, and enhancing the activity of kinase PP2A. Moreover, HYD inhibited the overexpression of NR2A and NR2B, and increased the expression of GluR1 and postsynaptic density protein-95 (PSD95). CONCLUSIONS HYD can improve the cognitive deficits by interfering with the neurotoxic interaction between Aβ and tau. In addition, HYD can inhibit the overactivation of NMDARs and increase the levels of GluR1 and PSD95, which may play a role in alleviating neuronal excitotoxicity and improving synaptic function.
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Affiliation(s)
- Huiqin Zhang
- Institute of Geriatrics, Xiyuan Hospital, China Academy of Chinese Medical Sciences, 1 Xiyuan Caochang Road, Haidian District, Beijing, 100091, China
| | - Wenxuan Chen
- Institute of Geriatrics, Xiyuan Hospital, China Academy of Chinese Medical Sciences, 1 Xiyuan Caochang Road, Haidian District, Beijing, 100091, China
| | - Zehui Li
- Institute of Geriatrics, Xiyuan Hospital, China Academy of Chinese Medical Sciences, 1 Xiyuan Caochang Road, Haidian District, Beijing, 100091, China
| | - Qiaoyi Huang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, No. 11 North Third Ring Road East, Chaoyang District, Beijing, 100029, China
| | - Jiayu Wen
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, No. 11 North Third Ring Road East, Chaoyang District, Beijing, 100029, China
| | - Surui Chang
- Institute of Geriatrics, Xiyuan Hospital, China Academy of Chinese Medical Sciences, 1 Xiyuan Caochang Road, Haidian District, Beijing, 100091, China
| | - Hui Pei
- Institute of Geriatrics, Xiyuan Hospital, China Academy of Chinese Medical Sciences, 1 Xiyuan Caochang Road, Haidian District, Beijing, 100091, China
| | - Lina Ma
- Institute of Geriatrics, Xiyuan Hospital, China Academy of Chinese Medical Sciences, 1 Xiyuan Caochang Road, Haidian District, Beijing, 100091, China.
| | - Hao Li
- Institute of Geriatrics, Xiyuan Hospital, China Academy of Chinese Medical Sciences, 1 Xiyuan Caochang Road, Haidian District, Beijing, 100091, China; Wangjing Hospital, China Academy of Chinese Medical Sciences, Hua Jia Di Jie, Chaoyang District, Beijing, 100102, China.
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Singh R, Rani N, Kaur R, Chahal G, Kumar P, Kaur G. Exploring the Therapeutic Potential of Alkaloids in Alzheimer's Disease Management. Cent Nerv Syst Agents Med Chem 2024; 24:206-218. [PMID: 38213138 DOI: 10.2174/0118715249269092231109181638] [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: 07/20/2023] [Revised: 09/15/2023] [Accepted: 10/05/2023] [Indexed: 01/13/2024]
Abstract
BACKGROUND Alkaloids are important phytoconstituents obtained from various plant sources. The study's primary goal is to assess the anti-Alzheimer potential of alkaloids using a molecular docking study. Alzheimer's disease (AD) is considered a gradual decline in memory, reasoning, decision-making, orientation to one's physical surroundings, and language. MATERIALS AND METHODS The main target i.e. acetylcholinesterase proteins was selected for the molecular docking study. RESULTS The structures of various alkaloids were drawn using Chem Draw Software, PDB was retrieved from the RCSB PDB database, and molecular docking study was performed on Molergo Virtual Docker. The potential alkaloids were identified with anti-Alzheimer potency. CONCLUSION Reserpine, vinblastine, ergotamine, and tubocurarine were found to exhibit potential anti-Alzheimer potency.
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Affiliation(s)
- Randhir Singh
- Department of Pharmaceutical Sciences, Central University of Punjab, Bathinda, India
| | - Nidhi Rani
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Rajwinder Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Geeta Chahal
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Praveen Kumar
- SunPharma, Hill Top Area, Vill. Bhatolikalan, Himachal Pradesh, India- 174103
| | - Gagandeep Kaur
- Chitkara College of Pharmacy, Chitkara University, Himachal Pradesh, India
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24
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Seidu NM, Kern S, Sacuiu S, Sterner TR, Blennow K, Zetterberg H, Lindberg O, Ferreira D, Westman E, Zettergren A, Skoog I. Association of CSF biomarkers with MRI brain changes in Alzheimer's disease. ALZHEIMER'S & DEMENTIA (AMSTERDAM, NETHERLANDS) 2024; 16:e12556. [PMID: 38406609 PMCID: PMC10884990 DOI: 10.1002/dad2.12556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 01/24/2024] [Indexed: 02/27/2024]
Abstract
The relation between cerebrospinal fluid (CSF) biomarkers of Alzheimer's disease (AD) and magnetic resonance imaging (MRI) measures is poorly understood in cognitively healthy individuals from the general population. Participants' (n = 226) mean age was 70.9 years (SD = 0.4). CSF concentrations of amyloid beta (Aβ)1-42, total tau (t-tau), phosphorylated tau (p-tau), neurogranin, and neurofilament light, and volumes of hippocampus, amygdala, total basal forebrain (TBF), and cortical thickness were measured. Linear associations between CSF biomarkers and MRI measures were investigated. In Aβ1-42 positives, higher t-tau and p-tau were associated with smaller hippocampus (P = 0.001 and P = 0.003) and amygdala (P = 0.005 and P = 0.01). In Aβ1-42 negatives, higher t-tau, p-tau, and neurogranin were associated with larger TBF volume (P = 0.001, P = 0.001, and P = 0.01). No associations were observed between the CSF biomarkers and an AD signature score of cortical thickness. AD-specific biomarkers in cognitively healthy 70-year-olds may be related to TBF, hippocampus, and amygdala. Lack of association with cortical thickness might be due to early stage of disease.
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Affiliation(s)
- Nazib M Seidu
- Neuropsychiatric Epidemiology (EPINEP)Centre for Ageing and Health (AGECAP)Institute of Neuroscience and PhysiologySahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Silke Kern
- Neuropsychiatric Epidemiology (EPINEP)Centre for Ageing and Health (AGECAP)Institute of Neuroscience and PhysiologySahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Department of Psychiatry Cognition and Old Age PsychiatrySahlgrenska University Hospital, Region Västra GötalandGothenburgSweden
| | - Simona Sacuiu
- Neuropsychiatric Epidemiology (EPINEP)Centre for Ageing and Health (AGECAP)Institute of Neuroscience and PhysiologySahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Department of Psychiatry Cognition and Old Age PsychiatrySahlgrenska University Hospital, Region Västra GötalandGothenburgSweden
- Division of Clinical GeriatricsDepartment of NeurobiologyCare Sciences and SocietyCenter for Alzheimer ResearchKarolinska InstitutetStockholmSweden
- Cognitive Disorders ClinicTheme Inflammation and AgingKarolinska University HospitalStockholmSweden
| | - Therese Rydberg Sterner
- Neuropsychiatric Epidemiology (EPINEP)Centre for Ageing and Health (AGECAP)Institute of Neuroscience and PhysiologySahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Aging Research CenterDepartment of NeurobiologyCare Sciences and SocietyKarolinska Institutet and Stockholm UniversityStockholmSweden
| | - Kaj Blennow
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and PhysiologySahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Clinical Neurochemistry LaboratorySahlgrenska University Hospital, Region Västra GötalandGothenburgSweden
| | - Henrik Zetterberg
- Department of Psychiatry and NeurochemistryInstitute of Neuroscience and PhysiologySahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Clinical Neurochemistry LaboratorySahlgrenska University Hospital, Region Västra GötalandGothenburgSweden
- UK Dementia Research Institute at UCLLondonUK
- Department of Neurodegenerative DiseaseUCL Institute of NeurologyLondonUK
- Hong Kong Center for Neurodegenerative DiseasesHong KongChina
- UW Department of MedicineSchool of Medicine and Public HealthMadisonWisconsinUSA
| | - Olof Lindberg
- Division of Clinical GeriatricsDepartment of NeurobiologyCare Sciences and SocietyCenter for Alzheimer ResearchKarolinska InstitutetStockholmSweden
| | - Daniel Ferreira
- Division of Clinical GeriatricsDepartment of NeurobiologyCare Sciences and SocietyCenter for Alzheimer ResearchKarolinska InstitutetStockholmSweden
- Facultad de Ciencias de la SaludUniversidad Fernando Pessoa CanariasLas PalmasSpain
| | - Eric Westman
- Division of Clinical GeriatricsDepartment of NeurobiologyCare Sciences and SocietyCenter for Alzheimer ResearchKarolinska InstitutetStockholmSweden
- Department of NeuroimagingCentre for Neuroimaging SciencesInstitute of PsychiatryPsychology and NeuroscienceKing's College LondonLondonUK
| | - Anna Zettergren
- Neuropsychiatric Epidemiology (EPINEP)Centre for Ageing and Health (AGECAP)Institute of Neuroscience and PhysiologySahlgrenska AcademyUniversity of GothenburgGothenburgSweden
| | - Ingmar Skoog
- Neuropsychiatric Epidemiology (EPINEP)Centre for Ageing and Health (AGECAP)Institute of Neuroscience and PhysiologySahlgrenska AcademyUniversity of GothenburgGothenburgSweden
- Department of Psychiatry Cognition and Old Age PsychiatrySahlgrenska University Hospital, Region Västra GötalandGothenburgSweden
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25
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Zhang Z, Liu N, Pan X, Zhang C, Yang Y, Li X, Shao Y. Assessing causal associations between neurodegenerative diseases and neurological tumors with biological aging: a bidirectional Mendelian randomization study. Front Neurosci 2023; 17:1321246. [PMID: 38169680 PMCID: PMC10758410 DOI: 10.3389/fnins.2023.1321246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 11/29/2023] [Indexed: 01/05/2024] Open
Abstract
Background Aging is a significant risk factor for many neurodegenerative diseases and neurological tumors. Previous studies indicate that the frailty index, facial aging, telomere length (TL), and epigenetic aging clock acceleration are commonly used biological aging proxy indicators. This study aims to comprehensively explore potential relationships between biological aging and neurodegenerative diseases and neurological tumors by integrating various biological aging proxy indicators, employing Mendelian randomization (MR) analysis. Methods Two-sample bidirectional MR analyses were conducted using genome-wide association study (GWAS) data. Summary statistics for various neurodegenerative diseases and neurological tumors, along with biological aging proxy indicators, were obtained from extensive meta-analyses of GWAS. Genetic single-nucleotide polymorphisms (SNPs) associated with the exposures were used as instrumental variables, assessing causal relationships between three neurodegenerative diseases (Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis), two benign neurological tumors (vestibular schwannoma and meningioma), one malignant neurological tumor (glioma), and four biological aging indicators (frailty index, facial aging, TL, and epigenetic aging clock acceleration). Sensitivity analyses were also performed. Results Our analysis revealed that genetically predicted longer TL reduces the risk of Alzheimer's disease but increases the risk of vestibular schwannoma and glioma (All Glioma, GBM, non-GBM). In addition, there is a suggestive causal relationship between some diseases (PD and GBM) and DNA methylation GrimAge acceleration. Causal relationships between biological aging proxy indicators and other neurodegenerative diseases and neurological tumors were not observed. Conclusion Building upon prior investigations into the causal relationships between telomeres and neurodegenerative diseases and neurological tumors, our study validates these findings using larger GWAS data and demonstrates, for the first time, that Parkinson's disease and GBM may promote epigenetic age acceleration. Our research provides new insights and evidence into the causal relationships between biological aging and the risk of neurodegenerative diseases and neurological tumors.
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Affiliation(s)
- Zhiyun Zhang
- Department of Plastic and Reconstructive Surgery, The First Hospital of Jilin University, Changchun, China
| | - Ningfang Liu
- Department of Anesthesiology, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Xuyang Pan
- Department of Plastic and Reconstructive Surgery, The First Hospital of Jilin University, Changchun, China
| | - Chuyi Zhang
- Department of Plastic and Reconstructive Surgery, The First Hospital of Jilin University, Changchun, China
| | - Yifan Yang
- The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Xinyun Li
- Infection Department, The First Bethune Hospital of Jilin University, Changchun, China
| | - Ying Shao
- Department of Plastic and Reconstructive Surgery, The First Hospital of Jilin University, Changchun, China
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26
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Khandker RK, Chekani F, Mirchandani K, Kathe N. Diagnosis of behavioral symptoms as a predictor of institutionalization among Medicaid patients with dementia. BMC Geriatr 2023; 23:807. [PMID: 38053040 PMCID: PMC10696823 DOI: 10.1186/s12877-023-04506-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 11/22/2023] [Indexed: 12/07/2023] Open
Abstract
OBJECTIVES Behavioral symptoms are commonly observed in the course of dementia. This study aimed to assess the association of the diagnosis of a cluster of behavioral symptoms (e.g., agitation, aggression, psychotic symptoms, and delirium/wandering) with the likelihood of subsequent institutionalization. METHODS A retrospective cohort study of adults aged 65 and above diagnosed with dementia identified in the IBM® MarketScan® Multistate Medicaid database between October 01, 2015, and September 30, 2019, was conducted. The index date was defined as the first diagnosis date of dementia. The presence or absence of behavioral symptoms was identified in the 6 months prior to the index date (baseline). Institutionalization was evaluated 12 months (follow-up) post the index date. The association between diagnosed behavioral symptoms during the baseline period and institutionalization in the follow-up period was assessed using a multivariable logistic regression, adjusting for baseline sociodemographic and clinical characteristics. RESULTS The study cohort included 40,714 patients with dementia. A diagnosis of behavioral symptoms was found among 2,067 (5.1%) patients during the baseline period. An increased likelihood of institutionalization was found during the follow-up among patients with agitation and aggression in baseline (OR = 1.51 (95% CI: 1.18-1.92)) compared to patients without these symptoms at baseline. Patients with psychotic symptoms in baseline had significantly higher odds of getting institutionalized during the follow-up compared to patients without psychotic symptoms in baseline (OR = 1.36 (95% CI: 1.20-1.54)). Similarly, patients with symptoms of delirium and wandering in baseline had a higher likelihood of institutionalization than patients without these symptoms at baseline (OR = 1.61 (95% CI: 1.30-1.99)). CONCLUSION Several diagnosed behavioral symptoms were associated with a higher risk of institutionalization among older adults with dementia and should be considered when planning treatment strategies for the effective management of the condition.
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Affiliation(s)
- Rezaul Karim Khandker
- Center of Observational and Real-world Evidence, Merck & Co., Inc, 351 North Sumneytown Pike, North Wales, PA, USA
| | - Farid Chekani
- Center of Observational and Real-world Evidence, Merck & Co., Inc, 351 North Sumneytown Pike, North Wales, PA, USA.
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27
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Langbaum JB, Maloney E, Hennessy M, Harkins K, Karlawish J, Nosheny RL, Bleakley A. How intention to join an Alzheimer's participant recruitment registry differs by race, ethnicity, sex, and family history: Results from a national survey of US adults. Alzheimers Dement 2023; 19:5399-5406. [PMID: 37204220 PMCID: PMC10657330 DOI: 10.1002/alz.13126] [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: 01/17/2023] [Revised: 03/30/2023] [Accepted: 04/14/2023] [Indexed: 05/20/2023]
Abstract
INTRODUCTION Alzheimer's-focused participant recruitment registries are tools for accelerating enrollment into studies, however, registry members are primarily White women. METHODS We conducted a national online survey of 1501 adults ages 50-80, oversampling for Black and Hispanic/Latino respondents, assessing intention to join a generic "brain health" registry and to join a registry that required specific tasks. RESULTS Intention to join a registry was low (M 3.48, SD 1.77), and lower than intention to join a registry requiring specific tasks. Intention was greatest for registries requiring completing surveys (M 4.70, SD 1.77). Differences in intention were primarily between White women and Black women; differences between other groups were limited to specific tasks required. DISCUSSION The results indicate uncertainty about what a registry is, its purpose, and/or the concept of "brain health." Using the Reasoned Action Approach (RAA) to develop evidence-based outreach messages describing a registry and required tasks may increase diversity.
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Affiliation(s)
- Jessica B Langbaum
- Alzheimer's Prevention Initiative Department, Banner Alzheimer's Institute, Phoenix, Arizona, USA
| | - Erin Maloney
- Department of Communication, University of Delaware, Newark, Delaware, USA
| | - Michael Hennessy
- Department of Communication, University of Delaware, Newark, Delaware, USA
| | - Kristin Harkins
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jason Karlawish
- Departments of Medicine, Medical Ethics and Health Policy, and Neurology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Rachel L Nosheny
- Departments of Psychiatry and Behavioral Sciences, Radiology and Biomedical Engineering, University of California, San Francisco, California, USA
- Northern California Institute for Research and Education (NCIRE), Department of Veterans Affairs Medical Center, San Francisco, California, USA
| | - Amy Bleakley
- Department of Communication, University of Delaware, Newark, Delaware, USA
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28
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Komoda H, Morita D, Nakayama T, Iwase T. Idiopathic normal pressure hydrocephalus possibly affects the occurrence of proximal femoral fracture. Orthop Traumatol Surg Res 2023; 109:103545. [PMID: 36623705 DOI: 10.1016/j.otsr.2023.103545] [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: 07/04/2022] [Revised: 10/27/2022] [Accepted: 12/06/2022] [Indexed: 01/09/2023]
Abstract
AIMS The clinical triad of idiopathic normal pressure hydrocephalus (iNPH) includes gait disturbance, dementia, and urinary incontinence. These symptoms are also frequently observed in patients with proximal femoral fracture (PFF). The aim of this study was to investigate the relationship between PFF and iNPH retrospectively. PATIENTS AND METHODS Of the130 patients over 80-years-old with PFF included in this study, 48 were assigned to the PFF group. Forty-eight patients with peripheral vertigo matched with the PFF group for age and sex were included in the control group. We compared the Evans' index (EI), which is a head computed tomography finding of iNPH, and the percentages of patients with EI>0.3 between the two groups. The PFF group was further divided into two subgroups depending on whether EI was higher or lower than 0.3 (the higher or lower subgroup, respectively). We compared the patient's gait abilities before PFF, causes of PFF, cognitive functions, and occurrence of urinary incontinence between both groups. RESULTS The mean value of EI in the PFF group was significantly higher than that in the control group (PFF group, 0.301; control group, 0.284; p=0.008). The percentages of patients with EI>0.3 in the PFF and control groups were 62.5% and 35.4%, respectively (p=0.014). In subgroup analyses, the gait ability before injury was worse in the higher subgroup than that in the lower subgroup and was prominent among individuals who could walk only with human assistance (p=0.018). There were no significant differences in other parameters. CONCLUSION Elderly patients with PFF may have underlying idiopathic normal pressure hydrocephalus. LEVEL OF EVIDENCE III; case-control comparative study.
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Affiliation(s)
- Hidenori Komoda
- Department of Orthopedic surgery, Hamamatsu medical center, Shizuoka, Japan
| | - Daigo Morita
- Department of Orthopedic surgery, Hamamatsu medical center, Shizuoka, Japan.
| | - Teiji Nakayama
- Department of Neurosurgery, Hamamatsu medical center, Shizuoka, Japan
| | - Toshiki Iwase
- Department of Orthopedic surgery, Hamamatsu medical center, Shizuoka, Japan
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29
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Rani N, Alam MM, Jamal A, Bin Ghaffar U, Parvez S. Caenorhabditis elegans: A transgenic model for studying age-associated neurodegenerative diseases. Ageing Res Rev 2023; 91:102036. [PMID: 37598759 DOI: 10.1016/j.arr.2023.102036] [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: 05/09/2023] [Revised: 08/15/2023] [Accepted: 08/17/2023] [Indexed: 08/22/2023]
Abstract
Neurodegenerative diseases (NDs) are a heterogeneous group of aging-associated ailments characterized by interrupting cellular proteostasic machinery and the misfolding of distinct proteins to form toxic aggregates in neurons. Neurodegenerative diseases, which include Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS), Huntington's disease (HD), and others, are becoming an increasing threat to human health worldwide. The degeneration and death of certain specific groups of neurons are the hallmarks of these diseases. Over the past decades, Caenorhabditis eleganshas beenwidely used as a transgenic model to investigate biological processes related to health and disease. The nematode Caenorhabditis elegans (C. elegans) has developed as a powerful tool for studying disease mechanisms due to its ease of genetic handling and instant cultivation while providing a whole-animal system amendable to several molecular and biochemical techniques. In this review, we elucidate the potential of C. elegans as a versatile platform for systematic dissection of the molecular basis of human disease, focusing on neurodegenerative disorders, and may help better our understanding of the disease mechanisms and search for new therapeutics for these devastating diseases.
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Affiliation(s)
- Nisha Rani
- Department of Toxicology, School of Chemical & Life Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Mohammad Mumtaz Alam
- Drug Design and Medicinal Chemistry Lab, Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Azfar Jamal
- Department of Biology, College of Science Al-Zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia
| | - Usama Bin Ghaffar
- Department of Basic Science, College of Medicine, Majmaah University, Al-Majmaah 11952, Saudi Arabia
| | - Suhel Parvez
- Department of Toxicology, School of Chemical & Life Sciences, Jamia Hamdard, New Delhi 110062, India.
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30
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Chong JR, Chai YL, Xing H, Herr DR, Wenk MR, Francis PT, Ballard C, Aarsland D, Silver DL, Chen CP, Cazenave‐Gassiot A, Lai MKP. Decreased DHA-containing phospholipids in the neocortex of dementia with Lewy bodies are associated with soluble Aβ 42 , phosphorylated α-synuclein, and synaptopathology. Brain Pathol 2023; 33:e13190. [PMID: 37463072 PMCID: PMC10580008 DOI: 10.1111/bpa.13190] [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: 01/01/2023] [Accepted: 07/03/2023] [Indexed: 07/20/2023] Open
Abstract
Docosahexaenoic acid (DHA) is an essential omega-3 polyunsaturated fatty acid implicated in cognitive functions by promoting synaptic protein expression. While alterations of specific DHA-containing phospholipids have been described in the neocortex of patients with Alzheimer's disease (AD), the status of these lipids in dementia with Lewy bodies (DLB), known to manifest aggregated α-synuclein-containing Lewy bodies together with variable amyloid pathology, is unclear. In this study, post-mortem samples from the parietal cortex of 25 DLB patients and 17 age-matched controls were processed for phospholipidomics analyses using a liquid chromatography-tandem mass spectrometry (LC-MS/MS) platform. After controlling for false discovery rate, six out of the 46 identified putative DHA-phospholipid species were significantly decreased in DLB, with only one showing increase. Altered putative DHA-phospholipid species were subsequently validated with further LC-MS/MS measurements. Of the DHA-containing phospholipid (DCP) species showing decreases, five negatively correlated with soluble beta-amyloid (Aβ42) levels, whilst three also correlated with phosphorylated α-synuclein (all p < 0.05). Furthermore, five of these phospholipid species correlated with deficits of presynaptic Rab3A, postsynaptic neurogranin, or both (all p < 0.05). Finally, we found altered immunoreactivities of brain lysolipid DHA transporter, MFSD2A, and the fatty acid binding protein FABP5 in DLB parietal cortex. In summary, we report alterations of specific DCP species in DLB, as well as their associations with markers of neuropathological burden and synaptopathology. These results support the potential role of DHA perturbations in DLB as well as therapeutic targets.
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Affiliation(s)
- Joyce R. Chong
- Department of PharmacologyYong Loo Lin School of Medicine, National University of SingaporeKent RidgeSingapore
- Memory, Aging and Cognition CentreNational University Health SystemKent RidgeSingapore
| | - Yuek Ling Chai
- Department of PharmacologyYong Loo Lin School of Medicine, National University of SingaporeKent RidgeSingapore
- Memory, Aging and Cognition CentreNational University Health SystemKent RidgeSingapore
| | - Huayang Xing
- Department of PharmacologyYong Loo Lin School of Medicine, National University of SingaporeKent RidgeSingapore
| | - Deron R. Herr
- Department of PharmacologyYong Loo Lin School of Medicine, National University of SingaporeKent RidgeSingapore
| | - Markus R. Wenk
- Department of BiochemistryYong Loo Lin School of Medicine, National University of SingaporeKent RidgeSingapore
- Singapore Lipidomics Incubator (SLING), Life Sciences InstituteNational University of SingaporeKent RidgeSingapore
| | | | - Clive Ballard
- College of Medicine and HealthUniversity of ExeterExeterUK
| | - Dag Aarsland
- Department of Old Age PsychiatryInstitute of Psychiatry, Psychology and Neuroscience, King's College LondonLondonUK
- Centre for Age‐Related MedicineStavanger University HospitalStavangerNorway
| | - David L. Silver
- Signature Research Program in Cardiovascular and Metabolic DisordersDuke‐National University of Singapore (NUS) Medical SchoolOutramSingapore
| | - Christopher P. Chen
- Department of PharmacologyYong Loo Lin School of Medicine, National University of SingaporeKent RidgeSingapore
- Memory, Aging and Cognition CentreNational University Health SystemKent RidgeSingapore
| | - Amaury Cazenave‐Gassiot
- Department of BiochemistryYong Loo Lin School of Medicine, National University of SingaporeKent RidgeSingapore
- Singapore Lipidomics Incubator (SLING), Life Sciences InstituteNational University of SingaporeKent RidgeSingapore
| | - Mitchell K. P. Lai
- Department of PharmacologyYong Loo Lin School of Medicine, National University of SingaporeKent RidgeSingapore
- Memory, Aging and Cognition CentreNational University Health SystemKent RidgeSingapore
- College of Medicine and HealthUniversity of ExeterExeterUK
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Yashkin AP, Gorbunova GA, Tupler L, Yashin AI, Doraiswamy M, Akushevich I. Differences in Risk of Alzheimer's Disease Following Later-Life Traumatic Brain Injury in Veteran and Civilian Populations. J Head Trauma Rehabil 2023; 38:E384-E393. [PMID: 36854141 PMCID: PMC10460823 DOI: 10.1097/htr.0000000000000865] [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: 03/02/2023]
Abstract
OBJECTIVE To directly compare the effect of incident age 68+ traumatic brain injury (TBI) on the risk of diagnosis of clinical Alzheimer's disease (AD) in the general population of older adults, and between male veterans and nonveterans; to assess how this effect changes with time since TBI. SETTING AND PARTICIPANTS Community-dwelling traditional Medicare beneficiaries 68 years or older from the Health and Retirement Study (HRS). DESIGN Fine-Gray models combined with inverse-probability weighting were used to identify associations between incident TBI, post-TBI duration, and TBI treatment intensity, with a diagnosis of clinical AD dementia. The study included 16 829 older adults followed over the 1991-2015 period. For analyses of veteran-specific risks, 4281 veteran males and 3093 nonveteran males were identified. Analysis of veteran females was unfeasible due to the age structure of the population. Information on occurrence(s) of TBI, and onset of AD and risk-related comorbidities was constructed from individual-level HRS-linked Medicare claim records while demographic and socioeconomic risk factors were based on the survey data. RESULTS Later-life TBI was strongly associated with increased clinical AD risk in the full sample (pseudo-hazard ratio [HR]: 3.22; 95% confidence interval [CI]: 2.57-4.05) and in veteran/nonveteran males (HR: 5.31; CI: 3.42-7.94), especially those requiring high-intensity/duration care (HR: 1.58; CI: 1.29-1.91). Effect magnitude decreased with time following TBI (HR: 0.72: CI: 0.68-0.80). CONCLUSION Later-life TBI was strongly associated with increased AD risk, especially in those requiring high-intensity/duration care. Effect magnitude decreased with time following TBI. Univariate analysis showed no differences in AD risk between veterans and nonveterans, while the protective effect associated with veteran status in Fine-Gray models was largely due to differences in demographics, socioeconomics, and morbidity. Future longitudinal studies incorporating diagnostic procedures and documentation quantifying lifetime TBI events are necessary to uncover pathophysiological mediating and/or moderating mechanisms between TBI and AD.
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Affiliation(s)
- Arseniy P. Yashkin
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, NC, USA
| | - Galina A. Gorbunova
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, NC, USA
| | - Larry Tupler
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA
| | - Anatoliy I. Yashin
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, NC, USA
| | - Murali Doraiswamy
- Departments of Psychiatry and Medicine, Duke University School of Medicine and Duke Institute for Brain Sciences, Durham, NC, USA
| | - Igor Akushevich
- Biodemography of Aging Research Unit, Social Science Research Institute, Duke University, Durham, NC, USA
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Nagao M, Hatae A, Mine K, Tsutsumi S, Omori H, Hirata M, Arimatsu M, Taniguchi C, Watanabe T, Kubota K, Katsurabayashi S, Iwasaki K. The Effects of Ninjinyoeito on Impaired Spatial Memory and Prefrontal Cortical Synaptic Plasticity through α-Amino-3-hydroxy-5-4-isoxazole Propionic Acid Receptor Subunit in a Rat Model with Cerebral Ischemia and β-Amyloid Injection. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2023; 2023:6035589. [PMID: 37808130 PMCID: PMC10560115 DOI: 10.1155/2023/6035589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 08/05/2023] [Accepted: 09/02/2023] [Indexed: 10/10/2023]
Abstract
Ninjinyoeito (NYT), a traditional Japanese medicine, is effective for improving physical strength and treating fatigue and anorexia. Recently, a clinical report revealed that NYT ameliorates cognitive dysfunction in Alzheimer's disease (AD) patients, although the mechanisms remain unclear. AD is a neurodegenerative disorder accompanied by a progressive deficit in memory. Current therapeutic agents are largely ineffective in treating cognitive dysfunction in AD patients. In this study, we investigated the effects of NYT on spatial memory impairment in a rat model of dementia. Rats were prepared with transient cerebral ischemia and intraventricular injection of β-amyloid1-42 for 7 days (CI + Aβ). NYT was orally administered for 7 days after cerebral ischemia. We evaluated spatial memory using the Morris water maze and investigated the expression of α-amino-3-hydroxy-5-4-isoxazole propionic acid receptor subunits, the phosphorylation level of glutamate receptor A (GluA)1 at serine sites S831 and S845, and the Ca2+/calmodulin-dependent protein kinase II (CaMKII) in the hippocampus and prefrontal cortex of CI + Aβ rats. In the CI + Aβ rats, NYT treatment shortened the extended time to reach the platform. However, NYT did not restore the decrease in the hippocampal GluA1, GluA2, or CaMKII expression but increased prefrontal cortical phosphorylation levels of S845-GluA1 and CaMKII. Therefore, NYT may alleviate spatial memory impairment by promoting glutamatergic transmission involved in the phosphorylation of S845-GluA1 and CaMKII in the prefrontal cortex of CI + Aβ rats. Our results suggest that NYT is a valuable treatment for AD patients.
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Affiliation(s)
- Masaki Nagao
- Institute for Aging and Brain Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Akinobu Hatae
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Kazuma Mine
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Soichiro Tsutsumi
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Hiroya Omori
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Marika Hirata
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Maaya Arimatsu
- Institute for Aging and Brain Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Chise Taniguchi
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Takuya Watanabe
- Institute for Aging and Brain Sciences, Fukuoka University, Fukuoka 814-0180, Japan
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Kaori Kubota
- Institute for Aging and Brain Sciences, Fukuoka University, Fukuoka 814-0180, Japan
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Shutaro Katsurabayashi
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka 814-0180, Japan
| | - Katsunori Iwasaki
- Institute for Aging and Brain Sciences, Fukuoka University, Fukuoka 814-0180, Japan
- Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka 814-0180, Japan
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Morello G, Guarnaccia M, La Cognata V, Latina V, Calissano P, Amadoro G, Cavallaro S. Transcriptomic Analysis in the Hippocampus and Retina of Tg2576 AD Mice Reveals Defective Mitochondrial Oxidative Phosphorylation and Recovery by Tau 12A12mAb Treatment. Cells 2023; 12:2254. [PMID: 37759477 PMCID: PMC10527038 DOI: 10.3390/cells12182254] [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: 06/27/2023] [Revised: 08/31/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Increasing evidence implicates decreased energy metabolism and mitochondrial dysfunctions among the earliest pathogenic events of Alzheimer's disease (AD). However, the molecular mechanisms underlying bioenergetic dysfunctions in AD remain, to date, largely unknown. In this work, we analyzed transcriptomic changes occurring in the hippocampus and retina of a Tg2576 AD mouse model and wild-type controls, evaluating their functional implications by gene set enrichment analysis. The results revealed that oxidative phosphorylation and mitochondrial-related pathways are significantly down-regulated in both tissues of Tg2576 mice, supporting the role of these processes in the pathogenesis of AD. In addition, we also analyzed transcriptomic changes occurring in Tg2576 mice treated with the 12A12 monoclonal antibody that neutralizes an AD-relevant tau-derived neurotoxic peptide in vivo. Our analysis showed that the mitochondrial alterations observed in AD mice were significantly reverted by treatment with 12A12mAb, supporting bioenergetic pathways as key mediators of its in vivo neuroprotective and anti-amyloidogenic effects. This study provides, for the first time, a comprehensive characterization of molecular events underlying the disrupted mitochondrial bioenergetics in AD pathology, laying the foundation for the future development of diagnostic and therapeutic tools.
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Affiliation(s)
- Giovanna Morello
- Institute for Biomedical Research and Innovation, National Research Council (CNR-IRIB), Via Paolo Gaifami, 18, 95126 Catania, Italy; (G.M.); (M.G.); (V.L.C.)
| | - Maria Guarnaccia
- Institute for Biomedical Research and Innovation, National Research Council (CNR-IRIB), Via Paolo Gaifami, 18, 95126 Catania, Italy; (G.M.); (M.G.); (V.L.C.)
| | - Valentina La Cognata
- Institute for Biomedical Research and Innovation, National Research Council (CNR-IRIB), Via Paolo Gaifami, 18, 95126 Catania, Italy; (G.M.); (M.G.); (V.L.C.)
| | - Valentina Latina
- European Brain Research Institute (EBRI), Viale Regina Elena 295, 00161 Rome, Italy; (V.L.); (P.C.); (G.A.)
| | - Pietro Calissano
- European Brain Research Institute (EBRI), Viale Regina Elena 295, 00161 Rome, Italy; (V.L.); (P.C.); (G.A.)
| | - Giuseppina Amadoro
- European Brain Research Institute (EBRI), Viale Regina Elena 295, 00161 Rome, Italy; (V.L.); (P.C.); (G.A.)
- Institute of Translational Pharmacology (IFT), National Research Council (CNR), Via Fosso del Cavaliere 100, 00133 Rome, Italy
| | - Sebastiano Cavallaro
- Institute for Biomedical Research and Innovation, National Research Council (CNR-IRIB), Via Paolo Gaifami, 18, 95126 Catania, Italy; (G.M.); (M.G.); (V.L.C.)
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34
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Sinclair LI, Mohr A, Morisaki M, Edmondson M, Chan S, Bone-Connaughton A, Turecki G, Love S. Is later-life depression a risk factor for Alzheimer's disease or a prodromal symptom: a study using post-mortem human brain tissue? Alzheimers Res Ther 2023; 15:153. [PMID: 37700368 PMCID: PMC10496415 DOI: 10.1186/s13195-023-01299-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 08/24/2023] [Indexed: 09/14/2023]
Abstract
BACKGROUND Depression and dementia are both common diseases. Although new cases of depression are more common in younger adults, there is a second peak at the age of 50 years suggesting a different pathological process. Late-life depression (LLD) is associated with dementia. However, it remains unclear whether depression represents a dementia prodrome or is a true risk factor for its development. LLD is thought to have a vascular component and this may be a possible link between depression and dementia. We hypothesised that later-life depression is a prodromal manifestation of dementia and would therefore be associated with more AD, and/or ischaemic brain abnormalities that are present in earlier-life depression or in age- and sex-matched controls. METHODS We assessed post-mortem orbitofrontal cortex and dorsolateral pre-frontal cortex from 145 individuals in 4 groups: 28 18-50-year-olds with depression, 30 older individuals (ages 51-90) with depression, 28 with early AD (Braak tangle stages III-IV) and 57 matched controls (17 early-life, 42 later-life). Levels of Aβ, phospho-tau and α-synuclein were assessed by immunohistochemistry and ELISA. To quantify chronic ischaemia, VEGF, MAG and PLP1 were measured by ELISA. To assess pericyte damage, PDGFRB was measured by ELISA. For blood-brain barrier leakiness, JAM-A, claudin 5 and fibrinogen were measured by ELISA. To quantity endothelial activation, the ratio of ICAM1:collagen IV was assessed by immunohistochemistry. RESULTS There was no evidence of chronic cerebral hypoperfusion or increased Aβ/tau in either depression group. There was also no indication of pericyte damage, increased blood-brain barrier leakiness or endothelial activation in the OFC or DLPFC in the depression groups. CONCLUSIONS Contrary to some previous findings, we have not found evidence of impaired vascular function or increased Aβ in LLD. Our study had a relatively small sample size and limitations in the availability of clinical data. These results suggest that depression is a risk factor for dementia rather than an early manifestation of AD or a consequence of cerebral vascular insufficiency.
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Affiliation(s)
- Lindsey I Sinclair
- Dementia Research Group, Faculty of Health Sciences, University of Bristol, Southmead Hospital, Level 1 Learning & Research Building, Bristol, BS10 5NB, UK.
| | - Asher Mohr
- Dementia Research Group, Faculty of Health Sciences, University of Bristol, Southmead Hospital, Level 1 Learning & Research Building, Bristol, BS10 5NB, UK
| | - Mizuki Morisaki
- Dementia Research Group, Faculty of Health Sciences, University of Bristol, Southmead Hospital, Level 1 Learning & Research Building, Bristol, BS10 5NB, UK
| | - Martin Edmondson
- Dementia Research Group, Faculty of Health Sciences, University of Bristol, Southmead Hospital, Level 1 Learning & Research Building, Bristol, BS10 5NB, UK
| | - Selina Chan
- Dementia Research Group, Faculty of Health Sciences, University of Bristol, Southmead Hospital, Level 1 Learning & Research Building, Bristol, BS10 5NB, UK
- Douglas Institute, Department of Psychiatry, McGill University, Montreal, Canada
| | - A Bone-Connaughton
- Dementia Research Group, Faculty of Health Sciences, University of Bristol, Southmead Hospital, Level 1 Learning & Research Building, Bristol, BS10 5NB, UK
| | - Gustavo Turecki
- Department of Life Sciences, Warwick University, Warwick, UK
| | - Seth Love
- Dementia Research Group, Faculty of Health Sciences, University of Bristol, Southmead Hospital, Level 1 Learning & Research Building, Bristol, BS10 5NB, UK
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Hussain R, Khan S, Ullah H, Ali F, Khan Y, Sardar A, Iqbal R, Ataya FS, El-Sabbagh NM, Batiha GES. Benzimidazole-Based Schiff Base Hybrid Scaffolds: A Promising Approach to Develop Multi-Target Drugs for Alzheimer's Disease. Pharmaceuticals (Basel) 2023; 16:1278. [PMID: 37765088 PMCID: PMC10535318 DOI: 10.3390/ph16091278] [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: 07/15/2023] [Revised: 08/23/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
A series of benzimidazole-based Schiff base derivatives (1-18) were synthesized and structurally elucidated through 1H NMR, 13C NMR and HREI-MS analysis. Subsequently, these synthetic derivatives were subjected to evaluation for their inhibitory capabilities against acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE). All these derivatives showed significant inhibition against AChE with an IC50 value in the range of 123.9 ± 10.20 to 342.60 ± 10.60 µM and BuChE in the range of 131.30 ± 9.70 to 375.80 ± 12.80 µM in comparison with standard Donepezil, which has IC50 values of 243.76 ± 5.70 µM (AChE) and 276.60 ± 6.50 µM (BuChE), respectively. Compounds 3, 5 and 9 exhibited potent inhibition against both AChE and BuChE. Molecular docking studies were used to validate and establish the structure-activity relationship of the synthesized derivatives.
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Affiliation(s)
- Rafaqat Hussain
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan; (R.H.); (A.S.)
| | - Shoaib Khan
- Department of Chemistry, Abbottabad University of Science and Technology (AUST), Abbottabad 22020, Pakistan
| | - Hayat Ullah
- Department of Chemistry, University of Okara, Okara 56130, Pakistan
| | - Farhan Ali
- Department of Chemistry, Abbottabad University of Science and Technology (AUST), Abbottabad 22020, Pakistan
| | - Yousaf Khan
- Department of Chemistry, COMSATS University, Islamabad 45550, Pakistan
| | - Asma Sardar
- Department of Chemistry, Hazara University, Mansehra 21120, Pakistan; (R.H.); (A.S.)
| | - Rashid Iqbal
- Department of Agroecology-Climate and Water, Aarhus University, Blichers Allé 20, 8830 Tjele, Denmark;
- Department of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Farid S. Ataya
- Department of Biochemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;
| | - Nasser M. El-Sabbagh
- Department of Veterinary Pharmacology, Faculty of Veterinary Medicine, Alexandria University, Alexandria 21526, Egypt;
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheira, Egypt;
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36
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Glenn JM, Bryk K, Myers JR, Anderson J, Onguchi K, McFarlane J, Ozaki S. The efficacy and practicality of the Neurotrack Cognitive Battery assessment for utilization in clinical settings for the identification of cognitive decline in an older Japanese population. Front Aging Neurosci 2023; 15:1206481. [PMID: 37719874 PMCID: PMC10501833 DOI: 10.3389/fnagi.2023.1206481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 07/31/2023] [Indexed: 09/19/2023] Open
Abstract
Introduction Japan has the largest aging population with 33% of the population over the age of 60 years. The number of Japanese adults with dementia is estimated to be approximately 4.6 million, comprising nearly 15% of the older adult population. It is critical to administer cognitive assessments early in the disease state that have high reliability and low user burden to detect negative cognitive changes as early as possible; however, current preclinical AD detection methods are invasive, time-consuming, and expensive. A number of traditional and digital cognitive assessments are also available, but many of these tests are time-consuming, taxing to the user, and not widely scalable. The purpose of this study was to incorporate a digital cognitive assessment battery into a standard clinical assessment performed within a Japanese-based neuropsychology clinic to assess the diagnostic accuracy and the relationship between the digital Neurotrack Cognitive Assessment Battery (N-CAB) to traditional cognitive assessments. Methods Healthy individuals and probable Alzheimer's patients completed the N-CAB, as well as two traditional cognitive assessments, the Mini Mental Status Exam (MMSE) and the Revised Hasegawa's Dementia Scale (HDS-R). Results Our results demonstrate the Image Pairs hand-response phase of the N-CAB had the highest diagnostic accuracy with 95% sensitivity and 89% specificity to probable Alzheimer's disease. This was closely followed by the Symbol Match assessment, with a 96% sensitivity and 74% specificity to probable Alzheimer's disease. Additionally, Symbol Match and Path Points used in combination resulted in a sensitivity of 94%, specificity of 90%; a model with all N-CAB assessments resulted in a sensitivity and specificity of 100%. All N-CAB assessments had moderate to strong and significant correlations with the MMSE and HDS-R. Discussion Together, this suggests that the N-CAB assessment battery may be an appropriate alternative for the clinical screening of cognition for earlier detection of Alzheimer's disease.
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Affiliation(s)
- Jordan M. Glenn
- Neurotrack Technologies, Inc., Redwood City, CA, United States
| | - Kelsey Bryk
- Neurotrack Technologies, Inc., Redwood City, CA, United States
| | | | - John Anderson
- Neurotrack Technologies, Inc., Redwood City, CA, United States
| | - Kaori Onguchi
- Neurotrack Technologies, Inc., Redwood City, CA, United States
| | - Jacob McFarlane
- Neurotrack Technologies, Inc., Redwood City, CA, United States
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Moradi F, van den Berg M, Mirjebreili M, Kosten L, Verhoye M, Amiri M, Keliris GA. Early classification of Alzheimer's disease phenotype based on hippocampal electrophysiology in the TgF344-AD rat model. iScience 2023; 26:107454. [PMID: 37599835 PMCID: PMC10432721 DOI: 10.1016/j.isci.2023.107454] [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: 07/11/2022] [Revised: 04/27/2023] [Accepted: 07/19/2023] [Indexed: 08/22/2023] Open
Abstract
The hippocampus plays a vital role in navigation, learning, and memory, and is affected in Alzheimer's disease (AD). This study investigated the classification of AD-transgenic rats versus wild-type littermates using electrophysiological activity recorded from the hippocampus at an early, presymptomatic stage of the disease (6 months old) in the TgF344-AD rat model. The recorded signals were filtered into low frequency (LFP) and high frequency (spiking activity) signals, and machine learning classifiers were employed to identify the rat genotype (TG vs. WT). By analyzing specific frequency bands in the low frequency signals and calculating distance metrics between spike trains in the high frequency signals, accurate classification was achieved. Gamma band power emerged as a valuable signal for classification, and combining information from both low and high frequency signals improved the accuracy further. These findings provide valuable insights into the early stage effects of AD on different regions of the hippocampus.
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Affiliation(s)
- Faraz Moradi
- Faculty of Engineering, University of Ottawa, Ottawa, ON, Canada
| | - Monica van den Berg
- Bio-Imaging Lab, University of Antwerp, Antwerp, Belgium
- μNEURO Research Centre of Excellence, University of Antwerp, Antwerp, Belgium
| | | | - Lauren Kosten
- Bio-Imaging Lab, University of Antwerp, Antwerp, Belgium
- μNEURO Research Centre of Excellence, University of Antwerp, Antwerp, Belgium
| | - Marleen Verhoye
- Bio-Imaging Lab, University of Antwerp, Antwerp, Belgium
- μNEURO Research Centre of Excellence, University of Antwerp, Antwerp, Belgium
| | - Mahmood Amiri
- Medical Technology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Georgios A. Keliris
- Bio-Imaging Lab, University of Antwerp, Antwerp, Belgium
- μNEURO Research Centre of Excellence, University of Antwerp, Antwerp, Belgium
- Institute of Computer Science, Foundation for Research & Technology - Hellas, Heraklion, Crete, Greece
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Chatterjee T, Das G, Chatterjee BK, Ghosh S, Chakrabarti P. The Role of Protein- L-isoaspartyl Methyltransferase (PIMT) in the Suppression of Toxicity of the Oligomeric Form of Aβ42, in Addition to the Inhibition of Its Fibrillization. ACS Chem Neurosci 2023; 14:2888-2901. [PMID: 37535852 DOI: 10.1021/acschemneuro.3c00281] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023] Open
Abstract
The oligomeric form of amyloid-β peptide (Aβ42) plays a crucial role in the pathogenesis of Alzheimer's disease (AD) and is responsible for cognitive deficits. The soluble oligomers are believed to be more toxic compared to the fibril form. Protein-L-isoaspartyl methyltransferase (PIMT) is a repair enzyme that converts aberrant isoAsp residues, formed spontaneously on isomerization of normal Asp and Asn residues, back to typical Asp. It was shown to inhibit the fibrillization of Aβ42 (containing three Asp residues), and here, we investigate its effect on the size, conformation, and toxicity of Aβ42 oligomers (AβO). Far-UV CD indicated a shift in the conformational feature of AβOs from the random coil to β-sheet in the presence of PIMT. Binding of bis-ANS to different AβOs (obtained using different concentrations of Aβ42 monomer) indicated the correlation of size of oligomers to hydrophobicity: the smallest AβO having the highest hydrophobicity is the most toxic. Dynamic light scattering showed an increase in size of AβO with the addition of PIMT, a contrasting role to that on Aβ fibril. Assays using PC12-derived neurons showed the neuroprotective role of PIMT against AβO-induced toxicity. Furthermore, we have elaborated on the molecular mechanism of the antifibrillar action of PIMT and how this function is correlated with its enzymatic activity. PIMT has a more pronounced effect on AβO as compared to a small heat shock protein, pointing to its importance for the amelioration of the adverse effect of both Aβ42 oligomers and fibrils.
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Affiliation(s)
- Tanaya Chatterjee
- Department of Biochemistry, Bose Institute, P1/12 CIT Scheme VIIM, Kolkata 700054, India
| | - Gaurav Das
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Barun K Chatterjee
- Department of Physics, Bose Institute, 93/1 A.P.C. Road, Kolkata 700054, India
| | - Surajit Ghosh
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Pinak Chakrabarti
- Department of Biochemistry, Bose Institute, P1/12 CIT Scheme VIIM, Kolkata 700054, India
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Pahlavani HA. Exercise therapy to prevent and treat Alzheimer's disease. Front Aging Neurosci 2023; 15:1243869. [PMID: 37600508 PMCID: PMC10436316 DOI: 10.3389/fnagi.2023.1243869] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 07/24/2023] [Indexed: 08/22/2023] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease in the elderly with dementia, memory loss, and severe cognitive impairment that imposes high medical costs on individuals. The causes of AD include increased deposition of amyloid beta (Aβ) and phosphorylated tau, age, mitochondrial defects, increased neuroinflammation, decreased synaptic connections, and decreased nerve growth factors (NGF). While in animals moderate-intensity exercise restores hippocampal and amygdala memory through increased levels of p-AKT, p-TrkB, and p-PKC and decreased levels of Aβ, tau phosphorylation, and amyloid precursor proteins (APP) in AD. Aerobic exercise (with an intensity of 50-75% of VO2 max) prevents hippocampal volume reduction, spatial memory reduction, and learning reduction through increasing synaptic flexibility. Exercise training induces the binding of brain-derived neurotrophic factor (BDNF) to TrkB and the binding of NGF to TrkA to induce cell survival and neuronal plasticity. After aerobic training and high-intensity interval training, the increase of VEGF, angiopoietin 1 and 2, NO, tPA, and HCAR1 in cerebral vessels causes increased blood flow and angiogenesis in the cerebellum, motor cortex, striatum, and hippocampus. In the hippocampus, exercise training decreases mitochondrial fragmentation, DRP1, and FIS1, improving OPA1, MFN1, MFN2, and mitochondrial morphology. In humans, acute exercise as an anti-inflammatory condition causes an acute increase in IL-6 and an increase in anti-inflammatory factors such as IL-1RA and IL-10. Moderate-intensity exercise also inhibits inflammatory markers such as IFN-γ, IL-1β, IL-6, CRP, TNF-α, sTNFR1, COX-2, and NF-κB. Aerobic exercise significantly increases plasma levels of BDNF, nerve growth factor, synaptic plasticity, motor activity, spatial memory, and exploratory behavior in AD subjects. Irisin is a myokine released from skeletal muscle during exercise and protects the hippocampus by suppressing Aβ accumulation and promoting hippocampal proliferation through STAT3 signaling. Therefore, combined exercise training such as aerobic training, strength training, balance and coordination training, and cognitive and social activities seems to provide important benefits for people with AD.
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Beyene DA, Berha AB. Management Practice and Clinical Outcomes of Dementia in Sub-Saharan Africa: A Systematic Review. Behav Neurol 2023; 2023:2307443. [PMID: 37533682 PMCID: PMC10393511 DOI: 10.1155/2023/2307443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 06/03/2023] [Accepted: 07/12/2023] [Indexed: 08/04/2023] Open
Abstract
Background Dementia is a severe neurodegenerative disorder and it is a group of acquired symptoms associated with impaired cognitive functions. In low-income settings particularly in Sub-Saharan Africa (SSA), it is often seen as part of normal aging. Environmental, behavioral, and lifestyle interventions have the potential to alter the disease course of dementia. Objective This study is aimed to synthesize the literature/evidence(s) on the management practice and treatment outcomes of dementia in SSA. Method Comprehensive literature was searched in PubMed database, Cochrane Library, and Google Scholar. Eligibility has been set, and based on the criteria, initially, a total of 442 results were obtained, and from those around 183 articles were duplicated. After examining titles and abstracts of records 26 articles were identified. Finally, five randomized clinical trials (RCT) and three prospective cohort studies that were reported on the management practice and treatment outcome of dementia in SSA were eligible for analysis. RCT and prospective cohort studies were used to strengthen the quality of evidence. The quality of the included RCT studies was assessed by using the Cochrane Risk of Bias Tool. Result A total of 2781 patient data were included in the final analysis. Of these, 2354 patients were obtained from 5 RCTs and 427 patients from 3 prospective cohort studies, which were conducted in SSA countries. RCT studies were done on the feasibility and clinical effectiveness of cognitive stimulation therapy (CST) showed improvements in language memory domains and physical health. In addition, studies that focus on the management of human immunodeficiency virus-associated dementia (HIVAD) were reported to improve neurocognitively. Conclusion CST is applicable in low-resource settings and it shows improvements in cognitive function and quality of life. Early initiation of combination antiretroviral therapy in resource-limited settings has been associated with improvement in the cognitive function of HIVAD.
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Affiliation(s)
- Dessale Abate Beyene
- Department of Pharmacology and Clinical Pharmacy, School of Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Alemseged Beyene Berha
- Department of Pharmacology and Clinical Pharmacy, School of Pharmacy, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
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Ding B, Zhang X, Wan Z, Tian F, Ling J, Tan J, Peng X. Characterization of Mitochondrial DNA Methylation of Alzheimer's Disease in Plasma Cell-Free DNA. Diagnostics (Basel) 2023; 13:2351. [PMID: 37510095 PMCID: PMC10378411 DOI: 10.3390/diagnostics13142351] [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: 05/17/2023] [Revised: 06/29/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
Noninvasive diagnosis of Alzheimer's disease (AD) is important for patients. Significant differences in the methylation of mitochondrial DNA (mtDNA) were found in AD brain tissue. Cell-free DNA (cfDNA) is a noninvasive and economical diagnostic tool. We aimed to characterize mtDNA methylation alterations in the plasma cfDNA of 31 AD patients and 26 age- and sex-matched cognitively normal control subjects. We found that the mtDNA methylation patterns differed between AD patients and control subjects. The mtDNA was predominantly hypomethylated in the plasma cfDNA of AD patients. The hypomethylation sites or regions were mainly located in mt-rRNA, mt-tRNA, and D-Loop regions. The hypomethylation of the D-Loop region in plasma cfDNA of AD patients was consistent with that in previous studies. This study presents evidence that hypomethylation in the non-protein coding region of mtDNA may contribute to the pathogenesis of AD and potential application for the diagnosis of AD.
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Affiliation(s)
- Binrong Ding
- Department of Geriatrics, The Third Xiangya Hospital, Central South University, Changsha 410000, China
| | - Xuewei Zhang
- Health Management Center, Xiangya Hospital, Central South University, Changsha 410000, China
| | - Zhengqing Wan
- Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Feng Tian
- The 8 Ward, The Ninth Hospital of Changsha, Changsha 410000, China
| | - Jie Ling
- Medical Functional Experiment Center, School of Basic Medicine, Central South University, Changsha 410000, China
| | - Jieqiong Tan
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha 410000, China
- Institute of Molecular Precision Medicine, Xiangya Hospital, Central South University, Changsha 410000, China
- Hunan Key Laboratory of Molecular Precision Medicine, Changsha 410000, China
- Hunan International Scientific and Technological Cooperation Base of Neurodegenerative and Neurogenetic Diseases, Changsha 410000, China
| | - Xiaoqing Peng
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha 410000, China
- Institute of Molecular Precision Medicine, Xiangya Hospital, Central South University, Changsha 410000, China
- Hunan Key Laboratory of Molecular Precision Medicine, Changsha 410000, China
- Hunan International Scientific and Technological Cooperation Base of Neurodegenerative and Neurogenetic Diseases, Changsha 410000, China
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Goel N, Thomopoulos SI, Chattopadhyay T, Thompson PM. Predictive Modeling Of Alzheimer's Disease Prognosis Using Anatomical & Diffusion MRI. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2023; 2023:1-5. [PMID: 38083439 DOI: 10.1109/embc40787.2023.10341001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Mild cognitive impairment (MCI) is an intermediate stage between healthy aging and Alzheimer's disease (AD), and AD is a progressive neurodegenerative disorder that affects around 50 million people worldwide. As new AD treatments begin to be developed, one key goal of AD research is to predict which individuals with MCI are most likely to progress to AD over a given interval (such as 2 years); if successful, these individuals could be preferentially enrolled in drug trials that aim to slow AD progression. Here we benchmarked a range of MCI-to-AD predictive models including linear regressions, support vector machines, and random forests, using predictors from anatomical and diffusion-weighted brain MRI, age, sex, APOE genotype and standardized clinical scores. In evaluations on 2,448 subjects (1,132 MCI, 883 healthy controls, 433 with dementia) from the ADNI study, models including PCA-compacted features achieved a balanced accuracy of 75.3% (using cortical features) and 89.7% using diffusion MRI measures on test set, suggesting the added prognostic value of microstructural metrics obtainable with diffusion MRI.
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Kallmyer BA, Bass D, Baumgart M, Callahan CM, Dulaney S, Evertson LC, Fazio S, Judge KS, Samus Q. Dementia care navigation: Building toward a common definition, key principles, and outcomes. ALZHEIMER'S & DEMENTIA (NEW YORK, N. Y.) 2023; 9:e12408. [PMID: 37533688 PMCID: PMC10392594 DOI: 10.1002/trc2.12408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 03/23/2023] [Accepted: 04/17/2023] [Indexed: 08/04/2023]
Abstract
INTRODUCTION As the complexity of medical treatments and patient care systems have increased, the concept of patient navigation is growing in both popularity and breadth of application. Patient navigators are trained personnel whose role is not to provide clinical care, but to partner with patients to help them identify their needs and goals and then overcome modifiable patient-, provider-, and systems-level barriers. Due to its high incidence, duration, and medical-social complexity, dementia is an ideal candidate for a patient-centric health care delivery model such as care navigation. METHODS The Alzheimer's Association formed an expert workgroup of researchers in the field of dementia care navigation to identify evidence-based guidelines. RESULTS Recognizing the unique and challenging needs of persons living with dementia and their care partners, several U.S. dementia care navigation programs have been developed and assessed in recent years. Collectively these programs demonstrate that persons living with dementia and their care partners benefit from dementia care navigation. Improved care system outcomes for the person living with dementia include reduced emergency department visits, lower hospital readmissions, fewer days hospitalized, and shorter delays in long-term care placement. Well-being is also increased, as there is decreased depression, illness, strain, embarrassment, and behavioral symptoms and increased self-reported quality of life. For care partners, dementia navigation resulted in decreased depression, burden, and unmet needs. DISCUSSION This article presents principles of dementia care navigation to inform existing and emerging dementia care navigation programs. Highlights Several U.S. dementia care navigation programs have demonstrated outcomes for persons living with dementia, care partners, and health systems.The Alzheimer's Association formed an expert workgroup of researchers in the field of dementia care navigation to create a shared definition and identify evidence-based guidelines or principles.These outlined principles of dementia care navigation can inform existing and emerging dementia care navigation programs.
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Affiliation(s)
| | - David Bass
- Benjamin Rose Institute on AgingClevelandOhioUSA
| | | | | | - Sarah Dulaney
- UCSF Memory and Aging CenterSan FranciscoCaliforniaUSA
| | | | - Sam Fazio
- Alzheimer's AssociationChicagoIllinoisUSA
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Al Olaimat M, Martinez J, Saeed F, Bozdag S. PPAD: a deep learning architecture to predict progression of Alzheimer's disease. Bioinformatics 2023; 39:i149-i157. [PMID: 37387135 DOI: 10.1093/bioinformatics/btad249] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023] Open
Abstract
MOTIVATION Alzheimer's disease (AD) is a neurodegenerative disease that affects millions of people worldwide. Mild cognitive impairment (MCI) is an intermediary stage between cognitively normal state and AD. Not all people who have MCI convert to AD. The diagnosis of AD is made after significant symptoms of dementia such as short-term memory loss are already present. Since AD is currently an irreversible disease, diagnosis at the onset of the disease brings a huge burden on patients, their caregivers, and the healthcare sector. Thus, there is a crucial need to develop methods for the early prediction AD for patients who have MCI. Recurrent neural networks (RNN) have been successfully used to handle electronic health records (EHR) for predicting conversion from MCI to AD. However, RNN ignores irregular time intervals between successive events which occurs common in electronic health record data. In this study, we propose two deep learning architectures based on RNN, namely Predicting Progression of Alzheimer's Disease (PPAD) and PPAD-Autoencoder. PPAD and PPAD-Autoencoder are designed for early predicting conversion from MCI to AD at the next visit and multiple visits ahead for patients, respectively. To minimize the effect of the irregular time intervals between visits, we propose using age in each visit as an indicator of time change between successive visits. RESULTS Our experimental results conducted on Alzheimer's Disease Neuroimaging Initiative and National Alzheimer's Coordinating Center datasets showed that our proposed models outperformed all baseline models for most prediction scenarios in terms of F2 and sensitivity. We also observed that the age feature was one of top features and was able to address irregular time interval problem. AVAILABILITY AND IMPLEMENTATION https://github.com/bozdaglab/PPAD.
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Affiliation(s)
- Mohammad Al Olaimat
- Department of Computer Science and Engineering, University of North Texas, Denton, TX, United States
| | - Jared Martinez
- Department of Computer Science and Engineering, University of North Texas, Denton, TX, United States
| | - Fahad Saeed
- School of Computing and Information Sciences, Florida International University, Miami, FL, United States
| | - Serdar Bozdag
- Department of Computer Science and Engineering, University of North Texas, Denton, TX, United States
- Department of Mathematics, University of North Texas, Denton, TX, United States
- BioDiscovery Institute, University of North Texas, Denton, TX, United States
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Vu TM, Hervé V, Ulfat AK, Lamontagne-Kam D, Brouillette J. Impact of non-neuronal cells in Alzheimer's disease from a single-nucleus profiling perspective. Front Cell Neurosci 2023; 17:1208122. [PMID: 37388411 PMCID: PMC10300346 DOI: 10.3389/fncel.2023.1208122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 05/29/2023] [Indexed: 07/01/2023] Open
Abstract
The role of non-neuronal cells has been relatively overlooked in Alzheimer's disease (AD) neuropathogenesis compared to neuronal cells since the first characterization of the disease. Genome wide-association studies (GWAS) performed in the last few decades have greatly contributed to highlighting the critical impact of non-neuronal cells in AD by uncovering major genetic risk factors that are found largely in these cell types. The recent development of single cell or single nucleus technologies has revolutionized the way we interrogate the transcriptomic and epigenetic profiles of neurons, microglia, astrocytes, oligodendrocytes, pericytes, and endothelial cells simultaneously in the same sample and in an individual manner. Here, we review the latest advances in single-cell/nucleus RNA sequencing and Assay for Transposase-Accessible Chromatin (ATAC) sequencing to more accurately understand the function of non-neuronal cells in AD. We conclude by giving an overview of what still needs to be achieved to better appreciate the interconnected roles of each cell type in the context of AD.
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Sadeghi S, Esmaeili A, Zarrabi A. Dextran-coated iron oxide nanoparticles in combination with ginger extract without NGF promote neurite outgrowth and PC12 cell branching. ENVIRONMENTAL RESEARCH 2023:116302. [PMID: 37286125 DOI: 10.1016/j.envres.2023.116302] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 05/29/2023] [Accepted: 05/31/2023] [Indexed: 06/09/2023]
Abstract
Neurogenesis is decreased in the absence of nerve growth factor (NGF). It would be beneficial to discover substances that stimulate neurogenesis without NGF, given the high molecular weight and brief half-life of NGF. This work aims to assess the neurogenesis of ginger extract (GE) combined with superparamagnetic iron oxide nanoparticles (SPIONs) without NGF. Based on our research, GE and SPIONs start neurogenesis before NGF. In comparison to the control group, GE and SPIONs dramatically reduced the length and quantity of neurites, according to statistical analysis. Our findings also indicated that SPIONs and ginger extract together had an additive impact on one another. The total number significantly increased with the addition of GE and nanoparticles. In comparison to NGF, the mixture of GE and nanoparticles significantly enhanced the total number of cells with neurites (by about 1.2-fold), the number of branching points (by about 1.8-fold), and the length of neurites. The difference between ginger extract and nanoparticles with NGF was significant (about 3.5-fold), particularly in the case of cells with one neurite. The results of this study point to the possibility of treating neurodegenerative disorders via the combination of GE and SPIONs without NGF.
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Affiliation(s)
- Sanaz Sadeghi
- Department of Cell and Molecular Biology & Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.
| | - Abolghasem Esmaeili
- Department of Cell and Molecular Biology & Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran.
| | - Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Istinye University, Istanbul, 34396, Turkey.
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Xu J, Yang Y, Hu D. Predictors of cognitive impairment in patients undergoing ileostomy for colorectal cancer: a retrospective analysis. PeerJ 2023; 11:e15405. [PMID: 37304889 PMCID: PMC10249619 DOI: 10.7717/peerj.15405] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 04/21/2023] [Indexed: 06/13/2023] Open
Abstract
Background Early detection of cognitive impairment in patients undergoing ileostomy for colorectal cancer may help improve patient outcomes and quality of life. Identifying risk factors and clinically accessible factors is crucial for prevention and treatment. Objective This retrospective study aimed to identify risk factors for post-operative cognitive impairment in patients undergoing ileostomy for colorectal cancer and to explore potential factors for its prevention and treatment. Methods A total of 108 cases were selected and included in the study. Patient data including general characteristics, disease stage, complications, and chemotherapy status were collected, and sleep quality and cognitive function were assessed using questionnaires and follow-up. Patients were randomly divided into training and validation groups. A random forest model was used to rank clinical features based on their contribution to predicting the prognosis of cancer-related cognitive impairment (CRCI). Nomograms were constructed using the support vector machine-recursive feature elimination (SVM-RFE) method, and the minimal root-mean-square error (RMSE) values were compared to select the best model. Regression analysis was performed to determine independent predictors. Results Significant differences were observed in age, body mass index (BMI), alcohol consumption, frequency of physical activity, comorbidity, and cancer-related anemia (CRA) between the CRCI and non-CRCI groups. Random forest analysis revealed that age, BMI, exercise intensity, PSQI scores, and history of hypertension were the most significant predictors of outcome. Univariate logistic regression analysis of 18 variables revealed that age, alcohol consumption, exercise intensity, BMI, and comorbidity were significantly associated with the outcome of CRCI (p < 0.05). Univariate and multivariate models with P-values less than 0.1 and 0.2, respectively, showed better predictive performance for CRCI. The results of univariate analysis were plotted on a nomogram to evaluate the risk of developing CRCI after colorectal cancer surgery. The nomogram was found to have good predictive performance. Finally, regression analysis revealed that age, exercise intensity, BMI, comorbidity, and CRA were independent predictors of CRCI. Conclusions This retrospective cohort study revealed that age, exercise intensity, BMI, comorbidity, CRA, and mobility are independent predictors of cognitive impairment in patients undergoing ileostomy for colorectal cancer. Identifying these factors and potential factors may have clinical implications in predicting and managing post-operative cognitive impairment in this patient population.
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Affiliation(s)
- Jing Xu
- Department of Gastroenterology, Changxing People’s Hospital, Changxing, China
| | - Yuelan Yang
- Department of Rehabilitation Medicine, Changxing People’s Hospital, Changxing, China
| | - Die Hu
- Department of Ultrasound Medicine, Changxing People’s Hospital, Changxing, China
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Zhou X, Cao J, Zhu L, Farrell K, Wang M, Guo L, Yang J, McKenzie A, Crary JF, Cai D, Tu Z, Zhang B. Molecular differences in brain regional vulnerability to aging between males and females. Front Aging Neurosci 2023; 15:1153251. [PMID: 37284017 PMCID: PMC10239962 DOI: 10.3389/fnagi.2023.1153251] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 05/02/2023] [Indexed: 06/08/2023] Open
Abstract
Background Aging-related cognitive decline is associated with brain structural changes and synaptic loss. However, the molecular mechanisms of cognitive decline during normal aging remain elusive. Results Using the GTEx transcriptomic data from 13 brain regions, we identified aging-associated molecular alterations and cell-type compositions in males and females. We further constructed gene co-expression networks and identified aging-associated modules and key regulators shared by both sexes or specific to males or females. A few brain regions such as the hippocampus and the hypothalamus show specific vulnerability in males, while the cerebellar hemisphere and the anterior cingulate cortex regions manifest greater vulnerability in females than in males. Immune response genes are positively correlated with age, whereas those involved in neurogenesis are negatively correlated with age. Aging-associated genes identified in the hippocampus and the frontal cortex are significantly enriched for gene signatures implicated in Alzheimer's disease (AD) pathogenesis. In the hippocampus, a male-specific co-expression module is driven by key synaptic signaling regulators including VSNL1, INA, CHN1 and KCNH1; while in the cortex, a female-specific module is associated with neuron projection morphogenesis, which is driven by key regulators including SRPK2, REPS2 and FXYD1. In the cerebellar hemisphere, a myelination-associated module shared by males and females is driven by key regulators such as MOG, ENPP2, MYRF, ANLN, MAG and PLP1, which have been implicated in the development of AD and other neurodegenerative diseases. Conclusions This integrative network biology study systematically identifies molecular signatures and networks underlying brain regional vulnerability to aging in males and females. The findings pave the way for understanding the molecular mechanisms of gender differences in developing neurodegenerative diseases such as AD.
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Affiliation(s)
- Xianxiao Zhou
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Mount Sinai Center for Transformative Disease Modeling, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Jiqing Cao
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Research & Development, James J. Peters VA Medical Center, Bronx, NY, United States
| | - Li Zhu
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Research & Development, James J. Peters VA Medical Center, Bronx, NY, United States
| | - Kurt Farrell
- Neuropathology Brain Bank & Research CoRE, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Minghui Wang
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Mount Sinai Center for Transformative Disease Modeling, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Lei Guo
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Mount Sinai Center for Transformative Disease Modeling, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Jialiang Yang
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Andrew McKenzie
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - John F. Crary
- Neuropathology Brain Bank & Research CoRE, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Dongming Cai
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Research & Development, James J. Peters VA Medical Center, Bronx, NY, United States
- Alzheimer’s Disease Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Ronald M. Loeb Center for Alzheimer’s Disease, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Zhidong Tu
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Bin Zhang
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Mount Sinai Center for Transformative Disease Modeling, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
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Yang L, Chen Y, Jia Z, Yuan X, Liu J. Electrostatic assembly of gold nanoparticle and metal-organic framework nanoparticles attenuates amyloid β aggregate-mediated neurotoxicity. J Mater Chem B 2023; 11:4453-4463. [PMID: 37158054 DOI: 10.1039/d3tb00281k] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The deposition of amyloid β (Aβ) is a conventional pathological hallmark of Alzheimer's disease (AD). Consequently, the inhibition of Aβ aggregation combined with the disaggregation of Aβ fibrils is an important therapeutic method for AD treatment. In this study, a gold nanoparticle-decorated porous metal organic framework MIL-101(Fe) (AuNPs@PEG@MIL-101) was created as an Aβ inhibitor. The high positively charged MIL-101 induced a high number of Aβ40 to be absorbed or aggregated on the surface of nanoparticles. In addition, AuNPs improved the surface property of MIL-101, causing it to uniformly bind Aβ monomers and Aβ fibrils. Thus, this framework can efficiently suppress extracellular Aβ monomer fibrillation and disrupt the preformed Aβ fibers. AuNPs@PEG@MIL-101 also decreases intracellular Aβ40 aggregation and the amount of Aβ40 immobilized on the cell membrane, thus protecting PC12 cells from Aβ40-induced microtubular defects and cell membrane damage. In summary, AuNPs@PEG@MIL-101 shows great potential for application in AD therapy.
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Affiliation(s)
- Licong Yang
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Yutong Chen
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
| | - Zhi Jia
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
| | - Xiaoyu Yuan
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
| | - Jie Liu
- Department of Chemistry, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China.
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Daube D, Wiedicke A, Reifegerste D, Rossmann C. Who is Responsible? Attribution of Responsibility in the Context of Dementia: A Content-Analysis of Framing in Media Coverage. JOURNAL OF HEALTH COMMUNICATION 2023; 28:273-281. [PMID: 37038766 DOI: 10.1080/10810730.2023.2199684] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Dementia is currently one of the most significant public health challenges from a medical as well as a societal perspective. The number of people living with dementia is increasing, and there is conflicting evidence in terms of preventive measures and risk factors. The available therapies can slow down but neither stop nor reverse the condition. Educating the public about these circumstances is thus of utmost relevance. As the mass media are a major source of health-related information, this study uses a quantitative content analysis to examine the extent to which responsibility framing occurs concerning risk and protection factors for dementia. Besides the established levels of individual and society, this study considers the level "social network" as an independent level to account for the supporting role of relatives and friends in the care of people living with dementia. The results show that protection factors for dementia are reported more frequently than the risk factors of the condition. Further, attribution of responsibility for risk factors tended to be at the individual level, while protection was the responsibility of society and the social network.
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Affiliation(s)
- Dominik Daube
- Institute of Communication Science, Friedrich Schiller University, Jena, Germany
| | - A Wiedicke
- Department of Media and Communication, Ludwig Maximilians University, Munich, Germany
| | - D Reifegerste
- School of Public Health, University of Bielefeld, Bielefeld, Germany
| | - C Rossmann
- Department of Media and Communication, Ludwig Maximilians University, Munich, Germany
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