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Sun PY, Liu J, Hu JN, Tu YF, Jiang Q, Jia YJ, Sun HL, Chen SH, Xin JY, Yu ZY, Liu ZH, Tan CR, Zeng GH, Shi AY, Liu YH, Bu XL, Wang YJ, Wang J. Rejuvenation of peripheral immune cells attenuates Alzheimer's disease-like pathologies and behavioral deficits in a mouse model. SCIENCE ADVANCES 2024; 10:eadl1123. [PMID: 38809977 PMCID: PMC11135428 DOI: 10.1126/sciadv.adl1123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 04/26/2024] [Indexed: 05/31/2024]
Abstract
Immunosenescence contributes to systematic aging and plays a role in the pathogenesis of Alzheimer's disease (AD). Therefore, the objective of this study was to investigate the potential of immune rejuvenation as a therapeutic strategy for AD. To achieve this, the immune systems of aged APP/PS1 mice were rejuvenated through young bone marrow transplantation (BMT). Single-cell RNA sequencing revealed that young BMT restored the expression of aging- and AD-related genes in multiple cell types within blood immune cells. The level of circulating senescence-associated secretory phenotype proteins was decreased following young BMT. Notably, young BMT resulted in a significant reduction in cerebral Aβ plaque burden, neuronal degeneration, neuroinflammation, and improvement of behavioral deficits in aged APP/PS1 mice. The ameliorated cerebral amyloidosis was associated with an enhanced Aβ clearance of peripheral monocytes. In conclusion, our study provides evidence that immune system rejuvenation represents a promising therapeutic approach for AD.
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Affiliation(s)
- Pu-Yang Sun
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - Jie Liu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - Jian-Ni Hu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - Yun-Feng Tu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - Qiu Jiang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - Yu-Juan Jia
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - Hao-Lun Sun
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
- Shigatse Branch, Xinqiao Hospital, Third Military Medical University, Shigatse, China
| | - Si-Han Chen
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
- Department of Neurology, Nanchong Central Hospital, The Second Clinical Medical School, North Sichuan Medical College, Nanchong, China
| | - Jia-Yan Xin
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - Zhong-Yuan Yu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - Zhi-Hao Liu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - Cheng-Rong Tan
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - Gui-Hua Zeng
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - An-Yu Shi
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
| | - Yu-Hui Liu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
- Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China
| | - Xian-Le Bu
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
- Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
- Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China
- Chongqing Institute for Brain and Intelligence, Guangyang Bay Laboratory, Chongqing, China
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
| | - Jun Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Aging and Brain Diseases, Chongqing, China
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2
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Armenta-Castro A, Núñez-Soto MT, Rodriguez-Aguillón KO, Aguayo-Acosta A, Oyervides-Muñoz MA, Snyder SA, Barceló D, Saththasivam J, Lawler J, Sosa-Hernández JE, Parra-Saldívar R. Urine biomarkers for Alzheimer's disease: A new opportunity for wastewater-based epidemiology? ENVIRONMENT INTERNATIONAL 2024; 184:108462. [PMID: 38335627 DOI: 10.1016/j.envint.2024.108462] [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: 10/08/2023] [Revised: 01/16/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
While Alzheimer's disease (AD) diagnosis, management, and care have become priorities for healthcare providers and researcher's worldwide due to rapid population aging, epidemiologic surveillance efforts are currently limited by costly, invasive diagnostic procedures, particularly in low to middle income countries (LMIC). In recent years, wastewater-based epidemiology (WBE) has emerged as a promising tool for public health assessment through detection and quantification of specific biomarkers in wastewater, but applications for non-infectious diseases such as AD remain limited. This early review seeks to summarize AD-related biomarkers and urine and other peripheral biofluids and discuss their potential integration to WBE platforms to guide the first prospective efforts in the field. Promising results have been reported in clinical settings, indicating the potential of amyloid β, tau, neural thread protein, long non-coding RNAs, oxidative stress markers and other dysregulated metabolites for AD diagnosis, but questions regarding their concentration and stability in wastewater and the correlation between clinical levels and sewage circulation must be addressed in future studies before comprehensive WBE systems can be developed.
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Affiliation(s)
| | - Mónica T Núñez-Soto
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
| | - Kassandra O Rodriguez-Aguillón
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
| | - Alberto Aguayo-Acosta
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
| | - Mariel Araceli Oyervides-Muñoz
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
| | - Shane A Snyder
- Nanyang Environment & Water Research Institute (NEWRI), Nanyang Technological University, Singapore
| | - Damià Barceló
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, Jordi Girona, 18-26, 08034 Barcelona, Spain; Sustainability Cluster, School of Engineering at the UPES, Dehradun, Uttarakhand, India
| | - Jayaprakash Saththasivam
- Water Center, Qatar Environment & Energy Research Institute, Hamad Bin Khalifa University, Qatar Foundation, Qatar
| | - Jenny Lawler
- Water Center, Qatar Environment & Energy Research Institute, Hamad Bin Khalifa University, Qatar Foundation, Qatar
| | - Juan Eduardo Sosa-Hernández
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico.
| | - Roberto Parra-Saldívar
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico; Tecnologico de Monterrey, Institute of Advanced Materials for Sustainable Manufacturing, Monterrey 64849, Mexico
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3
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Zhao H, Sun M, Zhang Y, Kong W, Fan L, Wang K, Xu Q, Chen B, Dong J, Shi Y, Wang Z, Wang S, Zhuang X, Li Q, Lin F, Yao X, Zhang W, Kong C, Zhang R, Feng D, Zhao X. Connecting the Dots: The Cerebral Lymphatic System as a Bridge Between the Central Nervous System and Peripheral System in Health and Disease. Aging Dis 2024; 15:115-152. [PMID: 37307828 PMCID: PMC10796102 DOI: 10.14336/ad.2023.0516] [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: 02/12/2023] [Accepted: 05/16/2023] [Indexed: 06/14/2023] Open
Abstract
As a recently discovered waste removal system in the brain, cerebral lymphatic system is thought to play an important role in regulating the homeostasis of the central nervous system. Currently, more and more attention is being focused on the cerebral lymphatic system. Further understanding of the structural and functional characteristics of cerebral lymphatic system is essential to better understand the pathogenesis of diseases and to explore therapeutic approaches. In this review, we summarize the structural components and functional characteristics of cerebral lymphatic system. More importantly, it is closely associated with peripheral system diseases in the gastrointestinal tract, liver, and kidney. However, there is still a gap in the study of the cerebral lymphatic system. However, we believe that it is a critical mediator of the interactions between the central nervous system and the peripheral system.
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Affiliation(s)
- Hongxiang Zhao
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China.
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Meiyan Sun
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China.
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Yue Zhang
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Wenwen Kong
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Lulu Fan
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Kaifang Wang
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Qing Xu
- Department of Anesthesiology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - Baiyan Chen
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Jianxin Dong
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Yanan Shi
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Zhengyan Wang
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - ShiQi Wang
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Xiaoli Zhuang
- Department of Anesthesiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
| | - Qi Li
- Department of Anesthesiology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Feihong Lin
- Department of Anesthesiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China.
| | - Xinyu Yao
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
| | - WenBo Zhang
- Department of Neurosurgery, The Children’s Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China.
| | - Chang Kong
- Department of Anesthesiology and Critical Care Medicine, Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China.
| | - Rui Zhang
- Department of Anesthesiology, Affiliated Hospital of Weifang Medical University, Weifang, China.
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Dayun Feng
- Department of neurosurgery, Tangdu hospital, Fourth Military Medical University, Xi'an, China.
| | - Xiaoyong Zhao
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China.
- Department of Anesthesiology, Affiliated Hospital of Weifang Medical University, Weifang, China.
- Shandong Provincial Medicine and Health Key Laboratory of Clinical Anesthesia, School of Anesthesiology, Weifang Medical University, Weifang, China.
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4
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Liu J, van Beusekom H, Bu X, Chen G, Henrique Rosado de Castro P, Chen X, Chen X, Clarkson AN, Farr TD, Fu Y, Jia J, Jolkkonen J, Kim WS, Korhonen P, Li S, Liang Y, Liu G, Liu G, Liu Y, Malm T, Mao X, Oliveira JM, Modo MM, Ramos‐Cabrer P, Ruscher K, Song W, Wang J, Wang X, Wang Y, Wu H, Xiong L, Yang Y, Ye K, Yu J, Zhou X, Zille M, Masters CL, Walczak P, Boltze J, Ji X, Wang Y. Preserving cognitive function in patients with Alzheimer's disease: The Alzheimer's disease neuroprotection research initiative (ADNRI). NEUROPROTECTION 2023; 1:84-98. [PMID: 38223913 PMCID: PMC10783281 DOI: 10.1002/nep3.23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 01/16/2024]
Abstract
The global trend toward aging populations has resulted in an increase in the occurrence of Alzheimer's disease (AD) and associated socioeconomic burdens. Abnormal metabolism of amyloid-β (Aβ) has been proposed as a significant pathomechanism in AD, supported by results of recent clinical trials using anti-Aβ antibodies. Nonetheless, the cognitive benefits of the current treatments are limited. The etiology of AD is multifactorial, encompassing Aβ and tau accumulation, neuroinflammation, demyelination, vascular dysfunction, and comorbidities, which collectively lead to widespread neurodegeneration in the brain and cognitive impairment. Hence, solely removing Aβ from the brain may be insufficient to combat neurodegeneration and preserve cognition. To attain effective treatment for AD, it is necessary to (1) conduct extensive research on various mechanisms that cause neurodegeneration, including advances in neuroimaging techniques for earlier detection and a more precise characterization of molecular events at scales ranging from cellular to the full system level; (2) identify neuroprotective intervention targets against different neurodegeneration mechanisms; and (3) discover novel and optimal combinations of neuroprotective intervention strategies to maintain cognitive function in AD patients. The Alzheimer's Disease Neuroprotection Research Initiative's objective is to facilitate coordinated, multidisciplinary efforts to develop systemic neuroprotective strategies to combat AD. The aim is to achieve mitigation of the full spectrum of pathological processes underlying AD, with the goal of halting or even reversing cognitive decline.
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Affiliation(s)
- Jie Liu
- Department of Neurology, Daping HospitalThird Military Medical UniversityChongqingChina
- Chongqing Key Laboratory of Ageing and Brain DiseasesChongqingChina
| | - Heleen van Beusekom
- Division of Experimental Cardiology, Department of Cardiology, Erasmus MCUniversity Medical CenterRotterdamThe Netherlands
| | - Xian‐Le Bu
- Department of Neurology, Daping HospitalThird Military Medical UniversityChongqingChina
- Chongqing Key Laboratory of Ageing and Brain DiseasesChongqingChina
- Institute of Brain and IntelligenceThird Military Medical UniversityChongqingChina
| | - Gong Chen
- Guangdong‐HongKong‐Macau Institute of CNS Regeneration (GHMICR)Jinan UniversityGuangzhouGuangdongChina
| | | | - Xiaochun Chen
- Fujian Key Laboratory of Molecular Neurology, Department of Neurology and Geriatrics, Fujian Institute of Geriatrics, Fujian Medical University Union Hospital, Institute of NeuroscienceFujian Medical UniversityFuzhouFujianChina
| | - Xiaowei Chen
- Institute of Brain and IntelligenceThird Military Medical UniversityChongqingChina
- Guangyang Bay LaboratoryChongqing Institute for Brain and IntelligenceChongqingChina
- Center for Excellence in Brain Science and Intelligence TechnologyChinese Academy of SciencesShanghaiChina
| | - Andrew N. Clarkson
- Department of Anatomy, Brain Health Research Centre and Brain Research New ZealandUniversity of OtagoDunedinNew Zealand
| | - Tracy D. Farr
- School of Life SciencesUniversity of NottinghamNottinghamUK
| | - Yuhong Fu
- Brain and Mind Centre & School of Medical SciencesThe University of SydneySydneyNew South WalesAustralia
| | - Jianping Jia
- Innovation Center for Neurological Disorders and Department of Neurology, Xuanwu Hospital, National Clinical Research Center for Geriatric DiseasesCapital Medical UniversityBeijingChina
| | - Jukka Jolkkonen
- A.I. Virtanen Institute for Molecular SciencesUniversity of Eastern FinlandKuopioFinland
| | - Woojin Scott Kim
- Brain and Mind Centre & School of Medical SciencesThe University of SydneySydneyNew South WalesAustralia
| | - Paula Korhonen
- A.I. Virtanen Institute for Molecular SciencesUniversity of Eastern FinlandKuopioFinland
| | - Shen Li
- Department of Neurology and Psychiatry, Beijing Shijitan HospitalCapital Medical UniversityBeijingChina
| | - Yajie Liang
- Department of Diagnostic Radiology and Nuclear MedicineUniversity of Maryland School of MedicineBaltimoreMarylandUSA
| | - Guang‐Hui Liu
- University of Chinese Academy of SciencesBeijingChina
- State Key Laboratory of Membrane Biology, Institute of ZoologyChinese Academy of SciencesBeijingChina
| | - Guiyou Liu
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain DisordersCapital Medical UniversityBeijingChina
| | - Yu‐Hui Liu
- Department of Neurology, Daping HospitalThird Military Medical UniversityChongqingChina
- Chongqing Key Laboratory of Ageing and Brain DiseasesChongqingChina
- Institute of Brain and IntelligenceThird Military Medical UniversityChongqingChina
| | - Tarja Malm
- A.I. Virtanen Institute for Molecular SciencesUniversity of Eastern FinlandKuopioFinland
| | - Xiaobo Mao
- Institute for Cell Engineering, Department of NeurologyThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Joaquim Miguel Oliveira
- 3B's Research Group, I3Bs—Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative MedicineUniversity of MinhoGuimarãesPortugal
- ICVS/3B's—PT Government Associate LaboratoryBraga/GuimarãesPortugal
| | - Mike M. Modo
- Department of Bioengineering, McGowan Institute for Regenerative MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
- Department of Radiology, McGowan Institute for Regenerative MedicineUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Pedro Ramos‐Cabrer
- Magnetic Resonance Imaging LaboratoryCIC BiomaGUNE Research Center, Basque Research and Technology Alliance (BRTA)Donostia‐San SebastianSpain
| | - Karsten Ruscher
- Laboratory for Experimental Brain Research, Division of Neurosurgery, Department of Clinical SciencesLund UniversityLundSweden
| | - Weihong Song
- Institute of Aging, Key Laboratory of Alzheimer's Disease of Zhejiang Province. Zhejiang Clinical Research Center for Mental Disorders, School of Mental Health and The Affiliated Kangning Hospital, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health)Wenzhou Medical UniversityZhejiangChina
| | - Jun Wang
- Department of Neurology, Daping HospitalThird Military Medical UniversityChongqingChina
- Chongqing Key Laboratory of Ageing and Brain DiseasesChongqingChina
| | - Xuanyue Wang
- School of Optometry and Vision ScienceUniversity of New South WalesSydneyNew South WalesAustralia
| | - Yun Wang
- Neuroscience Research Institute, Department of Neurobiology, School of Basic, Medical Sciences, Key Laboratory for Neuroscience, Ministry of Education/National, Health Commission and State Key Laboratory of Natural and Biomimetic DrugsPeking UniversityBeijingChina
- PKU‐IDG/McGovern Institute for Brain ResearchPeking UniversityBeijingChina
| | - Haitao Wu
- Department of NeurobiologyBeijing Institute of Basic Medical SciencesBeijingChina
| | - Lize Xiong
- Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Clinical Research Center for Anesthesiology and Perioperative Medicine, Translational Research Institute of Brain and Brain‐Like Intelligence, Shanghai Fourth People's Hospital, School of MedicineTongji UniversityShanghaiChina
| | - Yi Yang
- Department of NeurologyThe First Hospital of Jilin University, Chang ChunJilinChina
| | - Keqiang Ye
- Faculty of Life and Health SciencesBrain Cognition and Brain Disease Institute (BCBDI), Shenzhen Institute of Advanced TechnologyShenzhenChina
| | - Jin‐Tai Yu
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Department of Neurology and Institute of Neurology, Huashan Hospital, Shanghai Medical CollegeFudan UniversityShanghaiChina
| | - Xin‐Fu Zhou
- Division of Health Sciences, School of Pharmacy and Medical Sciences and Sansom InstituteUniversity of South AustraliaAdelaideSouth AustraliaAustralia
- Suzhou Auzone BiotechSuzhouJiangsuChina
| | - Marietta Zille
- Department of Pharmaceutical Sciences, Division of Pharmacology and ToxicologyUniversity of ViennaViennaAustria
| | - Colin L. Masters
- The Florey InstituteThe University of Melbourne, ParkvilleVictoriaAustralia
| | - Piotr Walczak
- Department of Diagnostic Radiology and Nuclear MedicineUniversity of Maryland School of MedicineBaltimoreMarylandUSA
| | | | - Xunming Ji
- Department of NeurosurgeryXuanwu Hospital, Capital Medical UniversityBeijingChina
| | - Yan‐Jiang Wang
- Department of Neurology, Daping HospitalThird Military Medical UniversityChongqingChina
- Chongqing Key Laboratory of Ageing and Brain DiseasesChongqingChina
- Institute of Brain and IntelligenceThird Military Medical UniversityChongqingChina
- Guangyang Bay LaboratoryChongqing Institute for Brain and IntelligenceChongqingChina
- Center for Excellence in Brain Science and Intelligence TechnologyChinese Academy of SciencesShanghaiChina
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5
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Sun HL, Yao XQ, Lei L, Jin WS, Bai YD, Zeng GH, Shi AY, Liang J, Zhu L, Liu YH, Wang YJ, Bu XL. Associations of Blood and Cerebrospinal Fluid Aβ and tau Levels with Renal Function. Mol Neurobiol 2023; 60:5343-5351. [PMID: 37310581 DOI: 10.1007/s12035-023-03420-w] [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: 01/26/2023] [Accepted: 05/25/2023] [Indexed: 06/14/2023]
Abstract
Amyloid β (Aβ) and tau play pivotal roles in the pathogenesis of Alzheimer's disease (AD). Previous studies have shown that brain-derived Aβ and tau can be cleared through transport into the periphery, and the kidneys may be vital organs involved in the clearance of Aβ and tau. However, the effects of deficiency in the clearance of Aβ and tau by the kidneys on brain AD-type pathologies in humans remain largely unknown. In this study, we first recruited 41 patients with chronic kidney disease (CKD) and 40 age- and sex-matched controls with normal renal function to analyze the associations of the estimated glomerular filtration rate (eGFR) with plasma Aβ and tau levels. To analyze the associations of eGFR with cerebrospinal fluid (CSF) AD biomarkers, we recruited 42 cognitively normal CKD patients and 150 cognitively normal controls with CSF samples. Compared with controls with normal renal function, CKD patients had higher plasma levels of Aβ40, Aβ42 and total tau (T-tau), lower CSF levels of Aβ40 and Aβ42 and higher levels of CSF T-tau/Aβ42 and phosphorylated tau (P-tau)/Aβ42. Plasma Aβ40, Aβ42, and T-tau levels were negatively correlated with eGFR. In addition, eGFR was negatively correlated with CSF levels of T-tau, T-tau/Aβ42, and P-tau/Aβ42 but positively correlated with Mini-Mental State Examination (MMSE) scores. Thus, this study showed that the decline in renal function was correlated with abnormal AD biomarkers and cognitive decline, which provides human evidence that renal function may be involved in the pathogenesis of AD.
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Affiliation(s)
- Hao-Lun Sun
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Shigatse Branch, Xinqiao Hospital, Third Military Medical University, Shigatse, China
| | - Xiu-Qing Yao
- Department of Rehabilitation, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Li Lei
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Wang-Sheng Jin
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Yu-Di Bai
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Gui-Hua Zeng
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - An-Yu Shi
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Jun Liang
- Shigatse Branch, Xinqiao Hospital, Third Military Medical University, Shigatse, China
| | - Li Zhu
- Shigatse Branch, Xinqiao Hospital, Third Military Medical University, Shigatse, China
| | - Yu-Hui Liu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
- Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China
- State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China.
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China.
- Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China.
- State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China.
- Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China.
| | - Xian-Le Bu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China.
- Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China.
- Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China.
- State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China.
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6
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Liu ZH, Wang YJ, Bu XL. Alzheimer's disease: targeting the peripheral circulation. Mol Neurodegener 2023; 18:3. [PMID: 36631811 PMCID: PMC9832651 DOI: 10.1186/s13024-023-00594-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 01/06/2023] [Indexed: 01/12/2023] Open
Affiliation(s)
- Zhi-Hao Liu
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China ,grid.414906.e0000 0004 1808 0918Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yan-Jiang Wang
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China ,grid.414906.e0000 0004 1808 0918Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China ,grid.410570.70000 0004 1760 6682Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China ,grid.9227.e0000000119573309Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
| | - Xian-Le Bu
- grid.410570.70000 0004 1760 6682Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China ,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China ,grid.410570.70000 0004 1760 6682Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China ,grid.410570.70000 0004 1760 6682State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China
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7
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Zhu C, Zhu J, Xiang Y, Bu XL, Jin WS, Wang YJ. A Conceptual Study on the Peripheral Clearance of Brain-Derived α-Synuclein in Humans. J Alzheimers Dis 2022; 90:1485-1492. [PMID: 36278352 DOI: 10.3233/jad-220742] [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: 12/14/2022]
Abstract
BACKGROUND Abnormal intracellular expression and aggregation of α-synuclein (α-syn) is the histopathological hallmark of several neurodegenerative diseases especially Parkinson's disease. However, safe and efficient approaches to clear α-syn remain unavailable. OBJECTIVE This study aimed to investigate the process of peripheral catabolism of brain-derived α-syn. METHODS Thirty patients with atrioventricular reentrant tachycardia (AVRT) (left accessory pathways) who underwent radiofrequency catheter ablation (RFCA) were enrolled in this study. Blood was collected via catheters from superior vena cava (SVC), inferior vena cava (IVC) proximal to the hepatic vein (HV), the right femoral vein (FV), and femoral artery (FA) simultaneously during RFCA. Plasma α-syn levels of AVRT patients and soluble α-syn levels of the brain samples were measured using enzyme-linked immunosorbent assay kits. RESULTS The α-syn concentrations in different locations of veins were divided by time-matched arterial α-syn concentrations to generate the venous/arterial (V/A) ratio. The V/A ratio of α-syn from the SVC was 1.204 (1.069-1.339, 95% CI), while the V/A ratio of α-syn from IVC was 0.831 (0.734-0.928, 95% CI), suggesting that brain-derived α-syn in the arterial blood was physiologically cleared while going through the peripheral organs and tissues. And it was estimated that about half of brain soluble α-syn could efflux and be cleared in the periphery. Moreover, the glomerular filtration rate was found correlated with V-A difference (FA-ICV) (p = 0.0272). CONCLUSION Under physiological conditions, brain-derived α-syn could efflux into and be catabolized by the peripheral system. The kidney may play a potential role in the clearance of α-syn.
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Affiliation(s)
- Chi Zhu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Jie Zhu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China
| | - Yang Xiang
- Department of Neurology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, China
| | - Xian-Le Bu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China.,Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China
| | - Wang-Sheng Jin
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China.,Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China.,Institute of Brain and Intelligence, Third Military Medical University, Chongqing, China.,State Key Laboratory of Trauma, Burns and Combined Injury, Third Military Medical University, Chongqing, China.,Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
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8
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Odfalk KF, Bieniek KF, Hopp SC. Microglia: Friend and foe in tauopathy. Prog Neurobiol 2022; 216:102306. [PMID: 35714860 PMCID: PMC9378545 DOI: 10.1016/j.pneurobio.2022.102306] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 04/24/2022] [Accepted: 06/10/2022] [Indexed: 12/16/2022]
Abstract
Aggregation of misfolded microtubule associated protein tau into abnormal intracellular inclusions defines a class of neurodegenerative diseases known as tauopathies. The consistent spatiotemporal progression of tau pathology in Alzheimer's disease (AD) led to the hypothesis that tau aggregates spread in the brain via bioactive tau "seeds" underlying advancing disease course. Recent studies implicate microglia, the resident immune cells of the central nervous system, in both negative and positive regulation of tau pathology. Polymorphisms in genes that alter microglial function are associated with the development of AD and other tauopathies. Experimental manipulation of microglia function can alter tau pathology and microglia-mediated neuroinflammatory cascades can exacerbate tau pathology. Microglia also exert protective functions by mitigating tau spread: microglia internalize tau seeds and have the capacity to degrade them. However, when microglia fail to degrade these tau seeds there are deleterious consequences, including secretion of exosomes containing tau that can spread to neurons. This review explores the intersection of microglia and tau from the perspective of neuropathology, neuroimaging, genetics, transcriptomics, and molecular biology. As tau-targeted therapies such as anti-tau antibodies advance through clinical trials, it is critical to understand the interaction between tau and microglia.
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Affiliation(s)
- Kristian F Odfalk
- Glenn Biggs Institute for Alzheimer's and Neurodegenerative Diseases, University of Texas Health Science Center San Antonio, San Antonio, TX, USA; Department of Pharmacology, University of Texas Health Science Center San Antonio, San Antonio, TX, USA
| | - Kevin F Bieniek
- Glenn Biggs Institute for Alzheimer's and Neurodegenerative Diseases, University of Texas Health Science Center San Antonio, San Antonio, TX, USA; Department of Pathology and Laboratory Medicine, University of Texas Health Science Center San Antonio, San Antonio, TX, USA
| | - Sarah C Hopp
- Glenn Biggs Institute for Alzheimer's and Neurodegenerative Diseases, University of Texas Health Science Center San Antonio, San Antonio, TX, USA; Department of Pharmacology, University of Texas Health Science Center San Antonio, San Antonio, TX, USA.
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9
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Nelson AR. Peripheral Pathways to Neurovascular Unit Dysfunction, Cognitive Impairment, and Alzheimer’s Disease. Front Aging Neurosci 2022; 14:858429. [PMID: 35517047 PMCID: PMC9062225 DOI: 10.3389/fnagi.2022.858429] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 03/03/2022] [Indexed: 12/11/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common form of dementia. It was first described more than a century ago, and scientists are acquiring new data and learning novel information about the disease every day. Although there are nuances and details continuously being unraveled, many key players were identified in the early 1900’s by Dr. Oskar Fischer and Dr. Alois Alzheimer, including amyloid-beta (Aβ), tau, vascular abnormalities, gliosis, and a possible role of infections. More recently, there has been growing interest in and appreciation for neurovascular unit dysfunction that occurs early in mild cognitive impairment (MCI) before and independent of Aβ and tau brain accumulation. In the last decade, evidence that Aβ and tau oligomers are antimicrobial peptides generated in response to infection has expanded our knowledge and challenged preconceived notions. The concept that pathogenic germs cause infections generating an innate immune response (e.g., Aβ and tau produced by peripheral organs) that is associated with incident dementia is worthwhile considering in the context of sporadic AD with an unknown root cause. Therefore, the peripheral amyloid hypothesis to cognitive impairment and AD is proposed and remains to be vetted by future research. Meanwhile, humans remain complex variable organisms with individual risk factors that define their immune status, neurovascular function, and neuronal plasticity. In this focused review, the idea that infections and organ dysfunction contribute to Alzheimer’s disease, through the generation of peripheral amyloids and/or neurovascular unit dysfunction will be explored and discussed. Ultimately, many questions remain to be answered and critical areas of future exploration are highlighted.
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10
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Liang SY, Wang ZT, Tan L, Yu JT. Tau Toxicity in Neurodegeneration. Mol Neurobiol 2022; 59:3617-3634. [PMID: 35359226 DOI: 10.1007/s12035-022-02809-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 03/20/2022] [Indexed: 12/22/2022]
Abstract
Tau is a microtubule-associated protein widely distributed in the central nervous system (CNS). The main function of tau is to promote the assembly of microtubules and stabilize their structure. After a long period of research on neurodegenerative diseases, the function and dysfunction of the microtubule-associated protein tau in neurodegenerative diseases and tau neurotoxicity have attracted increasing attention. Tauopathies are a series of progressive neurodegenerative diseases caused by pathological changes in tau, such as abnormal phosphorylation. The pathological features of tauopathies are the deposition of abnormally phosphorylated tau proteins and the aggregation of tau proteins in neurons. This article first describes the normal physiological function and dysfunction of tau proteins and then discusses the enzymes and proteins involved in tau phosphorylation and dephosphorylation, the role of tau in cell dysfunction, and the relationships between tau and several neurodegenerative diseases. The study of tau neurotoxicity provides new directions for the treatment of tauopathies.
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Affiliation(s)
- Shu-Yu Liang
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, No.5 Donghai Middle Road, Qingdao, China
| | - Zuo-Teng Wang
- Department of Neurology, Qingdao Municipal Hospital, College of Medicine and Pharmaceutics, Ocean University of China, Qingdao, China
| | - Lan Tan
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, No.5 Donghai Middle Road, Qingdao, China. .,Department of Neurology, Qingdao Municipal Hospital, College of Medicine and Pharmaceutics, Ocean University of China, Qingdao, China.
| | - Jin-Tai Yu
- Department of Neurology and Institute of Neurology, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, 12th Wulumuqi Zhong Road, Shanghai, 200040, China.
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11
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Ishida K, Yamada K, Nishiyama R, Hashimoto T, Nishida I, Abe Y, Yasui M, Iwatsubo T. Glymphatic system clears extracellular tau and protects from tau aggregation and neurodegeneration. J Exp Med 2022; 219:213037. [PMID: 35212707 PMCID: PMC8932543 DOI: 10.1084/jem.20211275] [Citation(s) in RCA: 84] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 12/21/2021] [Accepted: 01/24/2022] [Indexed: 12/16/2022] Open
Abstract
Accumulation of tau has been implicated in various neurodegenerative diseases termed tauopathies. Tau is a microtubule-associated protein but is also actively released into the extracellular fluids including brain interstitial fluid and cerebrospinal fluid (CSF). However, it remains elusive whether clearance of extracellular tau impacts tau-associated neurodegeneration. Here, we show that aquaporin-4 (AQP4), a major driver of the glymphatic clearance system, facilitates the elimination of extracellular tau from the brain to CSF and subsequently to deep cervical lymph nodes. Strikingly, deletion of AQP4 not only elevated tau in CSF but also markedly exacerbated phosphorylated tau deposition and the associated neurodegeneration in the brains of transgenic mice expressing P301S mutant tau. The current study identified the clearance pathway of extracellular tau in the central nervous system, suggesting that glymphatic clearance of extracellular tau is a novel regulatory mechanism whose impairment contributes to tau aggregation and neurodegeneration.
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Affiliation(s)
- Kazuhisa Ishida
- Department of Neuropathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kaoru Yamada
- Department of Neuropathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Risa Nishiyama
- Department of Neuropathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Tadafumi Hashimoto
- Department of Neuropathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Innovative Dementia Prevention, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Itaru Nishida
- Department of Neuropathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yoichiro Abe
- Department of Pharmacology, Keio University School of Medicine, Tokyo, Japan.,Keio University Global Research Institute, Center for Water Biology and Medicine, Tokyo, Japan
| | - Masato Yasui
- Department of Pharmacology, Keio University School of Medicine, Tokyo, Japan.,Keio University Global Research Institute, Center for Water Biology and Medicine, Tokyo, Japan
| | - Takeshi Iwatsubo
- Department of Neuropathology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
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12
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Tzara O, Amalie Simonsen S, Sode West A, Asser Karsdal M, Klingenberg Iversen H, Henriksen K. Quantification of Tau-A in serum after brain injury: a comparison of two analytical platforms, ELISA and electrochemiluminescence immunoassay. Brain Inj 2022; 36:792-799. [DOI: 10.1080/02699052.2022.2048692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Ourania Tzara
- Neurodegenerative Diseases, Nordic Bioscience Biomarkers & Research, Herlev, Denmark
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Kgs, Lyngby, Denmark
| | | | - Anders Sode West
- Department of Neurology, Clinical Stroke Research Unit, Rigshospitalet, Denmark
| | - Morten Asser Karsdal
- Neurodegenerative Diseases, Nordic Bioscience Biomarkers & Research, Herlev, Denmark
| | - Helle Klingenberg Iversen
- Department of Neurology, Clinical Stroke Research Unit, Rigshospitalet, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Kim Henriksen
- Neurodegenerative Diseases, Nordic Bioscience Biomarkers & Research, Herlev, Denmark
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13
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Yu ZY, Yi X, Wang YR, Zeng GH, Tan CR, Cheng Y, Sun PY, Liu ZH, Wang YJ, Liu YH. Inhibiting α1-adrenergic receptor signaling pathway ameliorates AD-type pathologies and behavioral deficits in APPswe/PS1 mouse model. J Neurochem 2022; 161:293-307. [PMID: 35244207 DOI: 10.1111/jnc.15603] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 01/25/2022] [Accepted: 02/23/2022] [Indexed: 12/01/2022]
Affiliation(s)
- Zhong-Yuan Yu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xu Yi
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Ye-Ran Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Gui-Hua Zeng
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Cheng-Rong Tan
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yuan Cheng
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Pu-Yang Sun
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Zhi-Hao Liu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China.,Chongqing Key Laboratory of Ageing and Brain Diseases, Chongqing, China.,Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
| | - Yu-Hui Liu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
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14
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Yu Z, Chen D, Tan C, Zeng G, He C, Wang J, Bu X, Wang Y. Physiological clearance of Aβ by spleen and splenectomy aggravates Alzheimer-type pathogenesis. Aging Cell 2022; 21:e13533. [PMID: 34939734 PMCID: PMC8761003 DOI: 10.1111/acel.13533] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 10/26/2021] [Accepted: 11/30/2021] [Indexed: 12/16/2022] Open
Abstract
Background A previous study demonstrated that nearly 40%–60% of brain Aβ flows out into the peripheral system for clearance. However, where and how circulating Aβ is cleared in the periphery remains unclear. The spleen acts as a blood filter and an immune organ. The aim of the present study was to investigate the role of the spleen in the clearance of Aβ in the periphery. Methods We investigated the physiological clearance of Aβ by the spleen and established a mouse model of AD and spleen excision by removing the spleens of APP/PS1 mice to investigate the effect of splenectomy on AD mice. Results We found that Aβ levels in the splenic artery were higher than those in the splenic vein, suggesting that circulating Aβ is cleared when blood flows through the spleen. Next, we found that splenic monocytes/macrophages could take up Aβ directly in vivo and in vitro. Splenectomy aggravated behaviour deficits, brain Aβ burden and AD‐related pathologies in AD mice. Conclusion Our study reveals for the first time that the spleen exerts a physiological function of clearing circulating Aβ in the periphery. Our study also suggests that splenectomy, which is a routine treatment for splenic rupture and hypersplenism, might accelerate the development of AD.
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Affiliation(s)
- Zhong‐Yuan Yu
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
- Institute of Brain and Intelligence Third Military Medical University Chongqing China
- Chongqing Key Laboratory of Ageing and Brain Diseases Chongqing China
| | - Dong‐Wan Chen
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
- Institute of Brain and Intelligence Third Military Medical University Chongqing China
- Chongqing Key Laboratory of Ageing and Brain Diseases Chongqing China
| | - Cheng‐Rong Tan
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
- Institute of Brain and Intelligence Third Military Medical University Chongqing China
- Chongqing Key Laboratory of Ageing and Brain Diseases Chongqing China
| | - Gui‐Hua Zeng
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
- Institute of Brain and Intelligence Third Military Medical University Chongqing China
- Chongqing Key Laboratory of Ageing and Brain Diseases Chongqing China
| | - Chen‐Yang He
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
- Institute of Brain and Intelligence Third Military Medical University Chongqing China
- Chongqing Key Laboratory of Ageing and Brain Diseases Chongqing China
| | - Jun Wang
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
- Institute of Brain and Intelligence Third Military Medical University Chongqing China
- Chongqing Key Laboratory of Ageing and Brain Diseases Chongqing China
| | - Xian‐Le Bu
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
- Institute of Brain and Intelligence Third Military Medical University Chongqing China
- Chongqing Key Laboratory of Ageing and Brain Diseases Chongqing China
| | - Yan‐Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience Daping Hospital Third Military Medical University Chongqing China
- Institute of Brain and Intelligence Third Military Medical University Chongqing China
- Chongqing Key Laboratory of Ageing and Brain Diseases Chongqing China
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15
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Sun HL, Zhou FY, Chen DW, Tan CR, Zeng GH, Liu YH, Wang J, Bu XL, Wang YJ, Li HY, Jin WS. The Correlation of Tau Levels with Blood Monocyte Count in Patients with Alzheimer’s Disease. J Alzheimers Dis 2021; 85:1321-1328. [PMID: 34924377 DOI: 10.3233/jad-210692] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background: Recent studies have shown that monocytes can phagocytize the tau protein, which may ameliorate tau-type pathology in Alzheimer’s disease (AD). However, there are few clinical studies on the relationship between monocytes and tau-type pathology in AD patients. Objective: We aimed to explore changes in peripheral monocytes and their association with tau protein in AD patients. Methods: A total of 127 clinically diagnosed AD patients and 100 age- and sex-matched cognitively normal controls were recruited for analysis of the correlation of plasma tau levels with the blood monocyte count. Cerebrospinal fluid (CSF) samples from 46 AD patients and 88 controls were further collected to analyze the correlation of CSF tau and amyloid-β (Aβ) levels with the blood monocyte count. 105 clinically diagnosed mild cognitive impairment (MCI) patients and 149 age- and sex-matched cognitively normal controls were recruited from another cohort for verification. Results: Compared to normal controls, AD patients showed a significant reduction in the blood monocyte count. In addition, the monocyte count of AD patients was negatively correlated with CSF t-tau and p-tau levels but not with plasma tau levels. In normal people, monocyte count lack correlation with tau levels both in plasma and CSF. Monocyte count were not correlated with CSF Aβ levels in either group but were negatively correlated with CSF tau/Aβ 42 levels in the AD group. We had further verified the correlations of monocyte count with CSF tau levels in another cohort. Conclusion: This study suggests that monocytes may play an important role in the clearance of tau protein in the brain.
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Affiliation(s)
- Hao-Lun Sun
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
- Shigatse Branch, Xinqiao Hospital, Third Military Medical University, Shigatse, China
| | - Fa-Ying Zhou
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Dong-Wan Chen
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Cheng-Rong Tan
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Gui-Hua Zeng
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yu-Hui Liu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Jun Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xian-Le Bu
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yan-Jiang Wang
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Hui-Yun Li
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Wang-Sheng Jin
- Department of Neurology and Centre for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing, China
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16
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Eisenbaum M, Pearson A, Gratkowski A, Mouzon B, Mullan M, Crawford F, Ojo J, Bachmeier C. Influence of traumatic brain injury on extracellular tau elimination at the blood-brain barrier. Fluids Barriers CNS 2021; 18:48. [PMID: 34702292 PMCID: PMC8549249 DOI: 10.1186/s12987-021-00283-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 10/18/2021] [Indexed: 03/14/2023] Open
Abstract
Repetitive head trauma has been associated with the accumulation of tau species in the brain. Our prior work showed brain vascular mural cells contribute to tau processing in the brain, and that these cells progressively degenerate following repetitive mild traumatic brain injury (r-mTBI). The current studies investigated the role of the cerebrovasculature in the elimination of extracellular tau from the brain, and the influence of r-mTBI on these processes. Following intracranial injection of biotin-labeled tau, the levels of exogenous labeled tau residing in the brain were elevated in a mouse model of r-mTBI at 12 months post-injury compared to r-sham mice, indicating reduced tau elimination from the brain following head trauma. This may be the result of decreased caveolin-1 mediated tau efflux at the blood–brain barrier (BBB), as the caveolin inhibitor, methyl-β-cyclodextrin, significantly reduced tau uptake in isolated cerebrovessels and significantly decreased the basolateral-to-apical transit of tau across an in vitro model of the BBB. Moreover, we found that the upstream regulator of endothelial caveolin-1, Mfsd2a, was elevated in r-mTBI cerebrovessels compared to r-sham, which coincided with a decreased expression of cerebrovascular caveolin-1 in the chronic phase following r-mTBI (> 3 months post-injury). Lastly, angiopoietin-1, a mural cell-derived protein governing endothelial Mfsd2a expression, was secreted from r-mTBI cerebrovessels to a greater extent than r-sham animals. Altogether, in the chronic phase post-injury, release of angiopoietin-1 from degenerating mural cells downregulates caveolin-1 expression in brain endothelia, resulting in decreased tau elimination across the BBB, which may describe the accumulation of tau species in the brain following head trauma.
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Affiliation(s)
- Maxwell Eisenbaum
- The Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL, 34243, USA. .,The Open University, Milton Keynes, UK.
| | - Andrew Pearson
- The Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL, 34243, USA.,The Open University, Milton Keynes, UK
| | - Arissa Gratkowski
- The Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL, 34243, USA
| | - Benoit Mouzon
- The Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL, 34243, USA.,The Open University, Milton Keynes, UK.,James A. Haley Veterans' Hospital, Tampa, FL, USA
| | - Michael Mullan
- The Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL, 34243, USA.,The Open University, Milton Keynes, UK
| | - Fiona Crawford
- The Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL, 34243, USA.,The Open University, Milton Keynes, UK.,James A. Haley Veterans' Hospital, Tampa, FL, USA
| | - Joseph Ojo
- The Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL, 34243, USA.,The Open University, Milton Keynes, UK
| | - Corbin Bachmeier
- The Roskamp Institute, 2040 Whitfield Avenue, Sarasota, FL, 34243, USA.,The Open University, Milton Keynes, UK.,Bay Pines VA Healthcare System, Bay Pines, FL, USA
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17
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Zhou R, Chen LL, Yang H, Li L, Liu J, Chen L, Hong WJ, Wang CG, Ma JJ, Huang J, Zhou XF, Liu D, Zhou HD. Effect of High Cholesterol Regulation of LRP1 and RAGE on Aβ Transport Across the Blood-Brain Barrier in Alzheimer's Disease. Curr Alzheimer Res 2021; 18:428-442. [PMID: 34488598 DOI: 10.2174/1567205018666210906092940] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 04/01/2021] [Accepted: 06/09/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND High cholesterol aggravates the risk development of Alzheimer's disease (AD). AD is closely related to the transport impairment of Amyloid-β (Aβ) in the blood-brain barrier. It is unclear whether high cholesterol affects the risk of cognitive impairment in AD by affecting Aβ transport. The purpose of the study is to investigate whether high cholesterol regulates Aβ transport through low-density Lipoprotein Receptor-Related Protein 1 (LRP1) and Receptor for Advanced Glycation End products (RAGE) in the risk development of AD. METHODS We established high cholesterol AD mice model. The learning and memory functions were evaluated by Morris Water Maze (MWM). Cerebral microvascular endothelial cells were isolated, cultured, and observed. The expression levels of LRP1 and RAGE of endothelial cells and their effect on Aβ transport in vivo were observed. The expression level of LRP1 and RAGE was detected in cultured microvessels after using Wnt inhibitor DKK-1 and β-catenin inhibitor XAV-939. RESULTS Hypercholesterolemia exacerbated spatial learning and memory impairment. Hypercholesterolemia increased serum Aβ40 level, while serum Aβ42 level did not change significantly. Hypercholesterolemia decreased LRP1 expression and increased RAGE expression in cerebral microvascular endothelial cells. Hypercholesterolemia increased brain apoptosis in AD mice. In in vitro experiment, high cholesterol decreased LRP1 expression and increased RAGE expression, increased Aβ40 expression in cerebral microvascular endothelial cells. High cholesterol regulated the expressions of LRP1 and RAGE and transcriptional activity of LRP1 and RAGE promoters by the Wnt/β-catenin signaling pathway. CONCLUSION High cholesterol decreased LRP1 expression and increased RAGE expression in cerebral microvascular endothelial cells, which led to Aβ transport disorder in the blood-brain barrier. Increased Aβ deposition in the brain aggravated apoptosis in the brain, resulting to cognitive impairment of AD mice.
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Affiliation(s)
- Rui Zhou
- Department of Orthopedics, The Orthopedic Surgery Center of Chinese PLA, Southwest Hospital, Army Medical University, Chongqing 400042, China
| | - Li-Li Chen
- Department of Neurology, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Hai Yang
- Department of Neurology, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Ling Li
- Department of Neurology, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Juan Liu
- Department of Neurology, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Le Chen
- Postgraduate School, Bengbu Medical College, Anhui 233004, China
| | - Wen-Juan Hong
- Postgraduate School, Bengbu Medical College, Anhui 233004, China
| | - Cong-Guo Wang
- Postgraduate School, Bengbu Medical College, Anhui 233004, China
| | - Jing-Jing Ma
- Postgraduate School, Bengbu Medical College, Anhui 233004, China
| | - Jie Huang
- Postgraduate School, Bengbu Medical College, Anhui 233004, China
| | - Xin-Fu Zhou
- School of Pharmacy and Medical Sciences and Sansom Institute, University of South Australia, Adelaide, SA, Australia
| | - Dong Liu
- Laboratory of Field Surgery Institute, Army Medical University, Chongqing 400042, China
| | - Hua-Dong Zhou
- Department of Neurology, Daping Hospital, Army Medical University, Chongqing 400042, China
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18
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Abstract
Parabiosis is a surgical method of animal modeling with a long history. It has been widely used in medical research, particularly in the fields of aging, stem cells, neuroscience, and immunity in the past two decades. The protocols for parabiosis have been improved many times and are now widely accepted. However, researchers need to consider many details, from surgical operation to perioperative management, to reduce mortality and maintain the parabiosis union. Although parabiosis has certain inevitable limitations, it still has broad application prospects as an irreplaceable animal model in the medical research field.
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Affiliation(s)
- Cui Yang
- Institute of Neurology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan 610072, China.,Chinese Academy of Sciences Sichuan Translational Medicine Research Hospital, Chengdu, Sichuan 610072, China
| | - Zhi-Lan Liu
- Department of Neurology, General Hospital of Western Theater Command, Chengdu, Sichuan 610083, China
| | - Jun Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400012, China
| | - Xian-Le Bu
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400012, China
| | - Yan-Jiang Wang
- Department of Neurology and Center for Clinical Neuroscience, Daping Hospital, Third Military Medical University, Chongqing 400012, China. E-mail:
| | - Yang Xiang
- Department of Neurology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan 610072, China. E-mail:
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19
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Requirement of brain interleukin33 for aquaporin4 expression in astrocytes and glymphatic drainage of abnormal tau. Mol Psychiatry 2021; 26:5912-5924. [PMID: 33432186 PMCID: PMC8273186 DOI: 10.1038/s41380-020-00992-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 11/17/2020] [Accepted: 12/07/2020] [Indexed: 02/07/2023]
Abstract
Defective aquaporin4 (AQP4)-mediated glymphatic drainage has been linked to tauopathy and amyloid plaque in Alzheimer's disease. We now show that brain interleukin33 (IL33) is required for regulation of AQP4 expression in astrocytes, especially those at neuron-facing membrane domain (n-AQP4). First, IL33-deficient (Il33-/-) mice showed a loss of n-AQP4 after middle age, which coincided with a rapid accumulation of abnormal tau in neurons and a reduction in drainage of abnormal tau to peripheral tissues. Second, injection of recombinant IL33 induced robust expression of AQP4 at perivascular endfoot (p-AQP4) of astrocytes, but not n-AQP4, in Il33-/- brains. Although the increased p-AQP4 greatly accelerated drainage of intracerebroventricularly injected peptides, it did not substantially accelerate drainage of abnormal tau. These results suggest that p-AQP4 drives overall convective flow toward perivenous space, i.e., glymphatics, whereas n-AQP4 may generate an aqueous flow away from neurons to remove neuronal wastes, e.g., abnormal tau. We have previously shown the role of brain IL33 in DNA repair and autophagy in neurons with oxidative stress. Now, we show that IL33 deficiency also impairs glymphatic drainage. Defects in those mechanisms together may lead to chronic neurodegeneration and tauopathy at old age in IL33-deficient mice.
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20
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Cantero JL, Atienza M, Ramos-Cejudo J, Fossati S, Wisniewski T, Osorio RS. Plasma tau predicts cerebral vulnerability in aging. Aging (Albany NY) 2020; 12:21004-21022. [PMID: 33147571 PMCID: PMC7695405 DOI: 10.18632/aging.104057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 08/25/2020] [Indexed: 12/11/2022]
Abstract
Identifying cerebral vulnerability in late life may help prevent or slow the progression of aging-related chronic diseases. However, non-invasive biomarkers aimed at detecting subclinical cerebral changes in the elderly are lacking. Here, we have examined the potential of plasma total tau (t-tau) for identifying cerebral and cognitive deficits in normal elderly subjects. Patterns of cortical thickness and cortical glucose metabolism were used as outcomes of cerebral vulnerability. We found that increased plasma t-tau levels were associated with widespread reductions of cortical glucose uptake, thinning of the temporal lobe, and memory deficits. Importantly, tau-related reductions of glucose consumption in the orbitofrontal cortex emerged as a determining factor of the relationship between cortical thinning and memory loss. Together, these results support the view that plasma t-tau may serve to identify subclinical cerebral and cognitive deficits in normal aging, allowing detection of individuals at risk for developing aging-related neurodegenerative conditions.
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Affiliation(s)
- Jose L. Cantero
- Laboratory of Functional Neuroscience, Pablo de Olavide University, Seville, Spain
- CIBERNED, Network Center for Biomedical Research in Neurodegenerative Diseases, Madrid, Spain
| | - Mercedes Atienza
- Laboratory of Functional Neuroscience, Pablo de Olavide University, Seville, Spain
- CIBERNED, Network Center for Biomedical Research in Neurodegenerative Diseases, Madrid, Spain
| | - Jaime Ramos-Cejudo
- Division of Brain Aging, Department of Psychiatry, New York University School of Medicine, New York, NY 10016, USA
| | - Silvia Fossati
- Alzheimer's Center at Temple, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - Thomas Wisniewski
- Departments of Neurology, Pathology and Psychiatry, Center for Cognitive Neurology, New York University School of Medicine, New York, NY 10016, USA
| | - Ricardo S. Osorio
- Division of Brain Aging, Department of Psychiatry, New York University School of Medicine, New York, NY 10016, USA
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21
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Rabanel JM, Delbreil P, Banquy X, Brambilla D, Ramassamy C. Periphery-confined particulate systems for the management of neurodegenerative diseases and toxicity: Avoiding the blood-brain-barrier challenge. J Control Release 2020; 322:286-299. [PMID: 32243978 DOI: 10.1016/j.jconrel.2020.03.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/23/2020] [Accepted: 03/24/2020] [Indexed: 01/07/2023]
Abstract
The blood-brain barrier prevents passage of large and hydrophilic molecules, undermining efforts to deliver most active molecules, proteins and other macromolecules. To date, nanoparticle-assisted delivery has been extensively studied to overcome this challenge but with limited success. On the other hand, for certain brain therapeutic applications, periphery-confined particles could be of immediate therapeutic usefulness. The modulation of CNS dysfunctions from the peripheral compartment is a promising approach, as it does not involve invasive interventions. From recent studies, three main roles could be identified for periphery-confined particles: brain tissue detoxification via the "sink-effect"; a "circulating drug-reservoir" effect to improve drug delivery to brain tissues, and finally, brain vascular endothelium targeting to diagnose or heal vascular-related dysfunctions. These applications are much easier to implement as they do not involve complex therapeutic and targeting strategies and do not require crossing biological barriers. Micro/nano-devices required for such applications will likely be simpler to synthesize and will involve fewer complex materials. Moreover, peripheral particles are expected to be less prone to neurotoxicity and issues related to their diffusion in confined space.
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Affiliation(s)
- Jean-Michel Rabanel
- INRS, Centre Armand-Frappier Santé Biotechnologie, 531 boul. des Prairies, Laval, QC H7V 1B7, Canada
| | - Philippe Delbreil
- Faculty of Pharmacy, Université de Montréal, CP. 6128, succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - Xavier Banquy
- Faculty of Pharmacy, Université de Montréal, CP. 6128, succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - Davide Brambilla
- Faculty of Pharmacy, Université de Montréal, CP. 6128, succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - Charles Ramassamy
- INRS, Centre Armand-Frappier Santé Biotechnologie, 531 boul. des Prairies, Laval, QC H7V 1B7, Canada
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22
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Li LX, Yang T, Guo L, Wang DY, Tang CH, Li Q, Yang HM, Zhu J, Zhang LL. Serum tau levels are increased in patients with hyperthyroidism. Neurosci Lett 2020; 729:135003. [PMID: 32335219 DOI: 10.1016/j.neulet.2020.135003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 04/16/2020] [Accepted: 04/18/2020] [Indexed: 12/19/2022]
Abstract
Hyperthyroidism may cause cognitive decline and increases the risk of Alzheimer's disease (AD), the major form of dementia; however, the underlying mechanism of this relationship is unclear. AD is associated with increased serum levels of tau. In this study, we investigated the relationship between serum thyroid hormones (THs) and tau. Fifty participants diagnosed with hyperthyroidism and fifty euthyroid counterparts were included and received clinical examinations. Serum concentrations of thyroid-stimulating hormone (TSH), free thyroxine (FT4), free triiodothyronine (FT3) and tau protein were assessed. The total tau protein level was significantly higher in hyperthyroidism participants than in their euthyroid counterparts. The level of circulating total tau had a significant positive association with the serum concentrations of FT3 and FT4. Total tau level was increased in the low TSH group and the serum THs decreased with the increase of age. These findings reveal that peripheral THs are associated with the serum concentration of tau, which may be involved in the pathogenesis of AD, suggesting a potential therapeutic target of AD via hyperthyroidism therapy.
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Affiliation(s)
- Lun-Xi Li
- Department of Neurology, Army Medical University Daping Hospital, China
| | - Tong Yang
- Department of Neurology, Army Medical University Daping Hospital, China
| | - Lu Guo
- Department of Neurology, Army Medical University Daping Hospital, China
| | - Da-Yan Wang
- Department of Neurology, the Seventh Affiliated Hospital, Sun Yat-sen University, China
| | - Chun-Hua Tang
- Department of Neurology, Army Medical University Daping Hospital, China
| | - Qiong Li
- Department of Neurology, Army Medical University Daping Hospital, China
| | - Hai-Mei Yang
- Department of Neurology, Army Medical University Daping Hospital, China
| | - Jie Zhu
- Department of Neurology, Army Medical University Daping Hospital, China.
| | - Li-Li Zhang
- Department of Neurology, Army Medical University Daping Hospital, China
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23
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Yu ZY, Li WW, Yang HM, Mañucat-Tan NB, Wang J, Wang YR, Sun BL, Hu ZC, Zhang LL, Tan L, Deng J, Liu YH. Naturally Occurring Antibodies to Tau Exists in Human Blood and Are Not Changed in Alzheimer's Disease. Neurotox Res 2020; 37:1029-1035. [PMID: 32026360 DOI: 10.1007/s12640-020-00161-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 12/28/2019] [Accepted: 01/04/2020] [Indexed: 12/18/2022]
Abstract
Hyperphosphorylated tau is an important pathological agent in Alzheimer's disease (AD). Tau effluxes from the brain to the blood could potentially stimulate the production of naturally occurring antibodies (NAbs). We aimed to investigate whether NAbs to tau (NAbs-tau) was generated in human blood and to figure out the alteration of plasma NAbs-tau level in AD patients. About 192 AD patients and 192 age-matched and non-demented controls (NC) were enrolled in the present study. Immunofluorescence staining and western blot assays were used to confirm the existence of NAbs-tau in human blood. The plasma level of NAbs-tau in NC and AD group was analyzed by ELISA. Immunofluorescence staining and western blot assays confirmed the existence of NAbs-tau in human blood. However, no significant difference in the plasma level of NAbs-tau was observed between NC and AD group. Furthermore, the plasma level of NAbs-tau had no significant correlation with MMSE scores. The present study confirmed that NAbs-tau exists in human blood but does not differ in level between the NC and AD group. Plasma NAbs-tau is not a reliable biomarker for AD.
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Affiliation(s)
- Zhong-Yuan Yu
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China.,Basic Medical College, Third Military Medical University (Army Medical University), Chongqing, China
| | - Wei-Wei Li
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Hai-Mei Yang
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Noralyn B Mañucat-Tan
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - Jun Wang
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Ye-Ran Wang
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Bin-Lu Sun
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Zi-Cheng Hu
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Li-Li Zhang
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Liang Tan
- Southwest hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Juan Deng
- Department of Healthy Management, Research Institute of Surgery, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, 400042, China.
| | - Yu-Hui Liu
- Department of Neurology and Clinical Center for Neuroscience, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, China.
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24
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Meningeal Lymphatic Vessels: A Drain of the Brain Involved in Neurodegeneration? Neurosci Bull 2020; 36:557-560. [PMID: 31893342 DOI: 10.1007/s12264-019-00456-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 10/17/2019] [Indexed: 10/25/2022] Open
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25
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de Leon MJ, Blennow K. Therapeutic potential for peripheral clearance of misfolded brain proteins. Nat Rev Neurol 2019; 14:637-638. [PMID: 30214047 DOI: 10.1038/s41582-018-0071-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mony J de Leon
- Department of Psychiatry, Center for Brain Health, New York University School of Medicine, New York City, NY, USA.
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at University of Gothenburg, Mölndal, Sweden
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26
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Tau-Reactive Endogenous Antibodies: Origin, Functionality, and Implications for the Pathophysiology of Alzheimer's Disease. J Immunol Res 2019; 2019:7406810. [PMID: 31687413 PMCID: PMC6811779 DOI: 10.1155/2019/7406810] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 03/19/2019] [Accepted: 07/23/2019] [Indexed: 12/11/2022] Open
Abstract
In Alzheimer's disease (AD), tau pathology manifested by the accumulation of intraneuronal tangles and soluble toxic oligomers emerges as a promising therapeutic target. Multiple anti-tau antibodies inhibiting the formation and propagation of cytotoxic tau or promoting its clearance and degradation have been tested in clinical trials, albeit with the inconclusive outcome. Antibodies against tau protein have been documented both in the brain circulatory system and at the periphery, but their origin and role under normal conditions and in AD remain unclear. While it is tempting to assign them a protective role in regulating tau level and removal of toxic variants, the supportive evidence remains sporadic, requiring systematic analysis and critical evaluation. Herein, we review recent data showing the occurrence of tau-reactive antibodies in the brain and peripheral circulation and discuss their origin and significance in tau clearance. Based on the emerging evidence, we cautiously propose that impairments of tau clearance at the periphery by humoral immunity might aggravate the tau pathology in the central nervous system, with implication for the neurodegenerative process of AD.
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27
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Fossati S, Ramos Cejudo J, Debure L, Pirraglia E, Sone JY, Li Y, Chen J, Butler T, Zetterberg H, Blennow K, de Leon MJ. Plasma tau complements CSF tau and P-tau in the diagnosis of Alzheimer's disease. ALZHEIMER'S & DEMENTIA: DIAGNOSIS, ASSESSMENT & DISEASE MONITORING 2019; 11:483-492. [PMID: 31334328 PMCID: PMC6624242 DOI: 10.1016/j.dadm.2019.05.001] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Introduction Plasma tau may be an accessible biomarker for Alzheimer's disease (AD), but the correlation between plasma and cerebrospinal fluid (CSF) tau and the value of combining plasma tau with CSF tau and phospho-tau (P-tau) are still unclear. Methods Plasma-tau, CSF-tau, and P-tau were measured in 97 subjects, including elderly cognitively normal controls (n = 68) and patients with AD (n = 29) recruited at the NYU Center for Brain Health, with comprehensive neuropsychological and magnetic resonance imaging evaluations. Results Plasma tau was higher in patients with AD than cognitively normal controls (P < .001, area under the receiver operating characteristic curve = 0.79) similarly to CSF tau and CSF P-tau and was negatively correlated with cognition in AD. Plasma and CSF tau measures were poorly correlated. Adding plasma tau to CSF tau or CSF P-tau significantly increased the areas under the receiver operating characteristic curve from 0.80 and 0.82 to 0.87 and 0.88, respectively. Discussion Plasma tau is higher in AD independently from CSF-tau. Importantly, adding plasma tau to CSF tau or P-tau improves diagnostic accuracy, suggesting that plasma tau may represent a useful biomarker for AD, especially when added to CSF tau measures.
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Affiliation(s)
- Silvia Fossati
- Department of Psychiatry, New York University, School of Medicine, New York, NY, USA.,Department of Neurology, New York University, School of Medicine, New York, NY, USA
| | - Jaime Ramos Cejudo
- Department of Psychiatry, New York University, School of Medicine, New York, NY, USA
| | - Ludovic Debure
- Department of Psychiatry, New York University, School of Medicine, New York, NY, USA
| | - Elizabeth Pirraglia
- Department of Psychiatry, New York University, School of Medicine, New York, NY, USA
| | - Je Yeong Sone
- Department of Psychiatry, New York University, School of Medicine, New York, NY, USA
| | - Yi Li
- Department of Psychiatry, New York University, School of Medicine, New York, NY, USA
| | - Jingyun Chen
- Department of Psychiatry, New York University, School of Medicine, New York, NY, USA
| | - Tracy Butler
- Department of Psychiatry, New York University, School of Medicine, New York, NY, USA.,Department of Neurology, New York University, School of Medicine, New York, NY, USA
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden.,Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden.,Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London, United Kingdom.,UK Dementia Research Institute at UCL, London, United Kingdom
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden.,Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Mony J de Leon
- Department of Psychiatry, New York University, School of Medicine, New York, NY, USA
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28
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Zhang DF, Xu M, Bi R, Yao YG. Genetic Analyses of Alzheimer's Disease in China: Achievements and Perspectives. ACS Chem Neurosci 2019; 10:890-901. [PMID: 30698408 DOI: 10.1021/acschemneuro.8b00435] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Since 2010, the Chinese have become one of the most aged populations in the world, leading to a severe burden of neurodegenerative disorders. Alzheimer's disease (AD) is the most prevalent neurodegenerative disease and has a high genetic heritability. In the past two decades, numerous genetic analyses, from linkage analyses and candidate gene studies to genome-wide association studies (GWASs) and next-generation sequencing studies, have identified dozens of AD susceptibility or causal genes. These studies have provided a comprehensive genetic view and contributed to the understanding of the pathological and molecular mechanisms of the disease. However, most of the recognized AD genetic risk factors have been reported in studies based on European populations or populations of European ancestry, and data about the genetics of AD from other populations has been very limited. As China has the largest AD population in the world and because of the remarkable genetic differences between the East and the West, deciphering the genetic basis and molecular mechanism in Chinese patients with AD may add key points to the full characterization of AD. In this review, we present an overview of the current state of AD genetic research in China, with an emphasis on genome-level studies. We also describe the challenges and opportunities for future advances, especially for in-depth collaborations, brain bank construction, and primate animal modeling. There is an urgent need to promote public awareness and increase our collaborations and data sharing.
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Affiliation(s)
- Deng-Feng Zhang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan 650223, China
| | - Min Xu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan 650223, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan 650204, China
| | - Rui Bi
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan 650223, China
| | - Yong-Gang Yao
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province, Kunming Institute of Zoology, Kunming, Yunnan 650223, China
- Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, Yunnan 650204, China
- CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China
- Kunming Institute of Zoology−Chinese University of Hong Kong Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
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29
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Gonçalves RA, Wijesekara N, Fraser PE, De Felice FG. The Link Between Tau and Insulin Signaling: Implications for Alzheimer's Disease and Other Tauopathies. Front Cell Neurosci 2019; 13:17. [PMID: 30804755 PMCID: PMC6371747 DOI: 10.3389/fncel.2019.00017] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 01/16/2019] [Indexed: 01/27/2023] Open
Abstract
The microtubule-associated protein tau (MAPT) is mainly identified as a tubulin binding protein essential for microtubule dynamics and assembly and for neurite outgrowth. However, several other possible functions for Tau remains to be investigated. Insulin signaling is important for synaptic plasticity and memory formation and therefore is essential for proper brain function. Tau has recently been characterized as an important regulator of insulin signaling, with evidence linking Tau to brain and peripheral insulin resistance and beta cell dysfunction. In line with this notion, the hypothesis of Tau pathology as a key trigger of impaired insulin sensitivity and secretion has emerged. Conversely, insulin resistance can also favor Tau dysfunction, resulting in a vicious cycle of these events. In this review article, we discuss recent evidence linking Tau pathology, insulin resistance and insulin deficiency. We further highlight the deleterious consequences of Tau pathology-induced insulin resistance to the brain and/or peripheral tissues, suggesting that these are key events mediating cognitive decline in Alzheimer’s disease (AD) and other tauopathies.
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Affiliation(s)
- Rafaella Araujo Gonçalves
- Centre for Neuroscience Studies, Queen's University, Kingston, ON, Canada.,Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, ON, Canada
| | - Nadeeja Wijesekara
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, ON, Canada
| | - Paul E Fraser
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, ON, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Fernanda G De Felice
- Centre for Neuroscience Studies, Queen's University, Kingston, ON, Canada.,Department of Psychiatry, Queen's University, Kingston, ON, Canada.,Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Saha P, Sen N. Tauopathy: A common mechanism for neurodegeneration and brain aging. Mech Ageing Dev 2019; 178:72-79. [PMID: 30668956 DOI: 10.1016/j.mad.2019.01.007] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/09/2019] [Accepted: 01/18/2019] [Indexed: 01/07/2023]
Abstract
Tau, a microtubule-associated protein promotes assembly and stability of microtubules which is related to axoplasmic flow and critical neuronal activities upon physiological conditions. Under neurodegenerative condition such as in Alzheimer's Disease (AD), tau-microtubule binding dynamics and equilibrium are severely affected due to its aberrant post-translational modifications including acetylation and hyperphosphorylation. This event results in its conformational changes to form neurofibrillary tangles (NFT) after aggregation in the cytosol. The formation of NFT is more strongly correlated with cognitive decline than the distribution of senile plaque, which is formed by polymorphous beta-amyloid (Aβ) protein deposits, another pathological hallmark of AD. In neurodegenerative conditions, other than AD, the disease manifestation is correlated with mutations of the MAPT gene. In Primary age-related tauopathy (PART), which is commonly observed in the brains of aged individuals, tau deposition is directly correlated with cognitive deficits even in the absence of Aβ deposition. Thus, tauopathy has been considered as an essential hallmark in neurodegeneration and normal brain aging. In this review, we highlighted the recent progress about the tauopathies in the light of its posttranslational modifications and its implication in AD and the aged brain.
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Affiliation(s)
- Pampa Saha
- Department of Neurological Surgery, University of Pittsburgh, 200 Lothrop Street, Scaife Hall, Pittsburgh, 15213, United States
| | - Nilkantha Sen
- Department of Neurological Surgery, University of Pittsburgh, 200 Lothrop Street, Scaife Hall, Pittsburgh, 15213, United States.
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