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Akhgari A, Michel TM, Vafaee MS. Dendritic spines and their role in the pathogenesis of neurodevelopmental and neurological disorders. Rev Neurosci 2024; 35:489-502. [PMID: 38440811 DOI: 10.1515/revneuro-2023-0151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 02/02/2024] [Indexed: 03/06/2024]
Abstract
Since Cajal introduced dendritic spines in the 19th century, they have attained considerable attention, especially in neuropsychiatric and neurologic disorders. Multiple roles of dendritic spine malfunction and pathology in the progression of various diseases have been reported. Thus, it is inevitable to consider these structures as new therapeutic targets for treating neuropsychiatric and neurologic disorders such as autism spectrum disorders, schizophrenia, dementia, Down syndrome, etc. Therefore, we attempted to prepare a narrative review of the literature regarding the role of dendritic spines in the pathogenesis of aforementioned diseases and to shed new light on their pathophysiology.
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Affiliation(s)
- Aisan Akhgari
- Student Research Committee, Tabriz University of Medical Sciences, Golgasht Street, Tabriz 5166616471, Iran
| | - Tanja Maria Michel
- Research Unit for Psychiatry, Odense University Hospital, J. B. Winsløws Vej 4, Odense 5000, Denmark
- Clinical Institute, University of Southern Denmark, Campusvej 55, Odense 5230, Denmark
| | - Manouchehr Seyedi Vafaee
- Research Unit for Psychiatry, Odense University Hospital, J. B. Winsløws Vej 4, Odense 5000, Denmark
- Clinical Institute, University of Southern Denmark, Campusvej 55, Odense 5230, Denmark
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2
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Mishra CB, Shalini S, Gusain S, Kumar P, Kumari S, Choi YS, Kumari J, Moku BK, Yadav AK, Prakash A, Jeon R, Tiwari M. Multitarget action of Benzothiazole-piperazine small hybrid molecule against Alzheimer's disease: In silico, In vitro, and In vivo investigation. Biomed Pharmacother 2024; 174:116484. [PMID: 38565058 DOI: 10.1016/j.biopha.2024.116484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/12/2024] [Accepted: 03/19/2024] [Indexed: 04/04/2024] Open
Abstract
A novel small molecule based on benzothiazole-piperazine has been identified as an effective multi-target-directed ligand (MTDL) against Alzheimer's disease (AD). Employing a medicinal chemistry approach, combined with molecular docking, MD simulation, and binding free energy estimation, compound 1 emerged as a potent MTDL against AD. Notably, compound 1 demonstrated efficient binding to both AChE and Aβ1-42, involving crucial molecular interactions within their active sites. It displayed a binding free energy (ΔGbind) -18.64± 0.16 and -16.10 ± 0.18 kcal/mol against AChE and Aβ1-42, respectively. In-silico findings were substantiated through rigorous in vitro and in vivo studies. In vitro analysis confirmed compound 1 (IC50=0.42 μM) as an effective, mixed-type, and selective AChE inhibitor, binding at both the enzyme's catalytic and peripheral anionic sites. Furthermore, compound 1 demonstrated a remarkable ability to reduce the aggregation propensity of Aβ, as evidenced by Confocal laser scanning microscopy and TEM studies. Remarkably, in vivo studies exhibited the promising therapeutic potential of compound 1. In a scopolamine-induced memory deficit mouse model of AD, compound 1 showed significantly improved spatial memory and cognition. These findings collectively underscore the potential of compound 1 as a promising therapeutic candidate for the treatment of AD.
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Affiliation(s)
- Chandra Bhushan Mishra
- College of Pharmacy, Sookmyung Women's University, Cheongpa-ro 47-gil 100, Yongsan-gu, Seoul 04310, South Korea; Department of Biochemistry and Molecular Pharmacology, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Shruti Shalini
- Dr. B. R. Ambedkar Centre for Biomedical Research, University of Delhi, New Delhi 110007, India
| | - Siddharth Gusain
- Dr. B. R. Ambedkar Centre for Biomedical Research, University of Delhi, New Delhi 110007, India
| | - Pawan Kumar
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Shikha Kumari
- Department of Chemistry, Virginia Tech, Blacksburg, VA 24061, USA
| | - Yong-Sung Choi
- College of Pharmacy, Sookmyung Women's University, Cheongpa-ro 47-gil 100, Yongsan-gu, Seoul 04310, South Korea
| | - Jyoti Kumari
- Dr. B. R. Ambedkar Centre for Biomedical Research, University of Delhi, New Delhi 110007, India
| | - Bala Krishna Moku
- Department of Biochemistry and Molecular Pharmacology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Anita Kumari Yadav
- Dr. B. R. Ambedkar Centre for Biomedical Research, University of Delhi, New Delhi 110007, India
| | - Amresh Prakash
- Amity Institute of Integrative Sciences and Health (AIISH), Amity University Haryana, Amity Education Valley, Gurgaon 122413, India
| | - Raok Jeon
- College of Pharmacy, Sookmyung Women's University, Cheongpa-ro 47-gil 100, Yongsan-gu, Seoul 04310, South Korea.
| | - Manisha Tiwari
- Dr. B. R. Ambedkar Centre for Biomedical Research, University of Delhi, New Delhi 110007, India.
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3
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Sreenivasmurthy SG, Iyaswamy A, Krishnamoorthi S, Reddi RN, Kammala AK, Vasudevan K, Senapati S, Zhu Z, Su CF, Liu J, Guan XJ, Chua KK, Cheung KH, Chen H, Zhang HJ, Zhang Y, Song JX, Kumar Durairajan SS, Li M. Bromo-protopine, a novel protopine derivative, alleviates tau pathology by activating chaperone-mediated autophagy for Alzheimer’s disease therapy. Front Mol Biosci 2022; 9:1030534. [PMID: 36387280 PMCID: PMC9643865 DOI: 10.3389/fmolb.2022.1030534] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 09/20/2022] [Indexed: 11/30/2022] Open
Abstract
Emerging evidence from Alzheimer’s disease (AD) patients suggests that reducing tau pathology can restore cognitive and memory loss. To reduce tau pathology, it is critical to find brain-permeable tau-degrading small molecules that are safe and effective. HDAC6 inhibition has long been considered a safe and effective therapy for tau pathology. Recently, we identified protopine as a dibenzazecine alkaloid with anti-HDAC6 and anti-AD activities. In this study, we synthesized and tested novel protopine derivatives for their pharmacological action against AD. Among them, bromo-protopine (PRO-Br) demonstrated a two-fold increase in anti-HDAC6 activity and improved anti-tau activities compared to the parent compound in both in vitro and in vivo AD models. Furthermore, molecular docking results showed that PRO-Br binds to HDAC6, with a ∆G value of −8.4 kcal/mol and an IC50 value of 1.51 µM. In neuronal cell lines, PRO-Br reduced pathological tau by inducing chaperone-mediated autophagy (CMA). In 3xTg-AD and P301S tau mice models, PRO-Br specifically decreased the pathogenic hyperphosphorylated tau clumps and led to the restoration of memory functions. In addition, PRO-Br treatment promoted the clearance of pathogenic tau by enhancing the expression of molecular chaperones (HSC70) and lysosomal markers (LAMP2A) via CMA in AD models. Our data strongly suggest that administration of the brain-permeable protopine derivative PRO-Br, could be a viable anti-tau therapeutic strategy for AD.
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Affiliation(s)
- Sravan Gopalkrishnashetty Sreenivasmurthy
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
- Institute for Research and Continuing Education, Hong Kong Baptist University, Shenzhen, China
| | - Ashok Iyaswamy
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
- Institute for Research and Continuing Education, Hong Kong Baptist University, Shenzhen, China
| | - Senthilkumar Krishnamoorthi
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
- Centre for Trans-disciplinary Research, Department of Pharmacology, Saveetha Dental College and Hospitals, Chennai, India
| | - Rambabu N. Reddi
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Ananth Kumar Kammala
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
- Department of Obstetrics and Gynecology, Division of Basic and Translational Research, The University of Texas Medical Branch, Galveston, United States
| | | | - Sanjib Senapati
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
| | - Zhou Zhu
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
- Institute for Research and Continuing Education, Hong Kong Baptist University, Shenzhen, China
| | - Cheng-Fu Su
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
- Institute for Research and Continuing Education, Hong Kong Baptist University, Shenzhen, China
| | - Jia Liu
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
- Institute for Research and Continuing Education, Hong Kong Baptist University, Shenzhen, China
| | - Xin-Jie Guan
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Ka-Kit Chua
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - King-Ho Cheung
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
- Institute for Research and Continuing Education, Hong Kong Baptist University, Shenzhen, China
| | - Hubiao Chen
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Hong-Jie Zhang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Yuan Zhang
- Department of Neurosurgery, Shenzhen Key Laboratory of Neurosurgery, Shenzhen Second People’s Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Ju-Xian Song
- Medical College of Acupuncture-Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Siva Sundara Kumar Durairajan
- Mycobiology and Neurodegenerative Disease Research Laboratory, Department of Microbiology, Central University of Tamil Nadu, Thiruvarur, India
- *Correspondence: Min Li, ; Siva Sundara Kumar Durairajan,
| | - Min Li
- Mr. and Mrs. Ko Chi-Ming Centre for Parkinson’s Disease Research, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
- Institute for Research and Continuing Education, Hong Kong Baptist University, Shenzhen, China
- *Correspondence: Min Li, ; Siva Sundara Kumar Durairajan,
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Verma B, Sinha P, Ganesh S. Ayurvedic formulations amalaki rasayana and rasa sindoor improve age-associated memory deficits in mice by modulating dendritic spine densities. J Ayurveda Integr Med 2022; 13:100636. [PMID: 36436297 PMCID: PMC9700303 DOI: 10.1016/j.jaim.2022.100636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 06/07/2022] [Accepted: 08/03/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Emerging reports indicate that age-associated cognitive decline begins with the transition from young to middle-aged, and this neurological condition manifests mainly due to the progressive impairment in the adaptive homeostasis process. Moreover, cognitive decline is associated with neurodegenerative changes in older adults. OBJECTIVE Previous studies have shown that the administration of Ayurvedic formulations restores the homeostatic pathways and ameliorates neurodegeneration in animal models of neurodegenerative diseases. Therefore, we wanted to check whether Ayurvedic formulations can rescue or delay the age-associated cognitive decline in middle-aged mice. MATERIAL AND METHODS We fed two-month-old mice with amalaki aasayana (AR, 1025 mg/kg per day) or rasa sindoor (RS, 41 mg/kg per day) mixed in a gelatin-based jelly for six months. Mice eating regular chow or blank jelly served as control. Subsequently, we looked at the improvements in the cognitive and behavioural traits of the treated animals. We have also analysed the effect of these formulations on the dendritic processes of neurons, glial activation, and the formation of corpora amylacea. RESULTS We found a significant improvement in episodic, working- and reference-spatiotemporal memory in animals fed on AR or RS. Microscopic analyses revealed a significant increase in the dendritic spine density in the apical dendrites of the hippocampal pyramidal neurons. The treatment, however, did not significantly affect gliosis and corpora amylacea in the brains. CONCLUSIONS Both AR and RS showed beneficial effects on memory functions of the middle-aged mice, possibly due to their effect on the dendritic spine densities. Our findings provide strong evidence to conclude that formulations AR and RS can prevent or delay the onset of age-associated cognitive decline.
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Park H, Hwang Y, Kim J. Transcriptional activation with Cas9 activator nanocomplexes rescues Alzheimer's disease pathology. Biomaterials 2021; 279:121229. [PMID: 34739981 DOI: 10.1016/j.biomaterials.2021.121229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 09/02/2021] [Accepted: 10/23/2021] [Indexed: 02/07/2023]
Abstract
CRISPR/Cas9-mediated gene activation is a potential therapeutic strategy that does not induce double-strand break (DSB) DNA damage. However, in vivo gene activation via a Cas9 activator remains a challenge, currently limiting its therapeutic applications. We developed a Cas9 activator nanocomplex that efficiently activates an endogenous gene in the brain in vivo, suggesting its possible application in novel therapeutics. We demonstrated a potential treatment application of the Cas9 activator nanocomplex by activating Adam10 in the mouse brain without introducing insertions and deletions (inDels). Remarkably, in vivo activation of Adam10 with the Cas9 activator nanocomplex improved cognitive deficits in an Alzheimer's disease (AD) mouse model. These results demonstrate the therapeutic potential of Cas9 activator nanocomplexes for a wide range of neurological diseases.
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Affiliation(s)
- Hanseul Park
- Laboratory of Cell Reprogramming & Gene Editing, Department of Chemistry & Biomedical Engineering, Dongguk University, Seoul, 04620, Republic of Korea
| | - Yerim Hwang
- Laboratory of Cell Reprogramming & Gene Editing, Department of Chemistry & Biomedical Engineering, Dongguk University, Seoul, 04620, Republic of Korea
| | - Jongpil Kim
- Laboratory of Cell Reprogramming & Gene Editing, Department of Chemistry & Biomedical Engineering, Dongguk University, Seoul, 04620, Republic of Korea.
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Li JZ, Hao XH, Wu HP, Li M, Liu XM, Wu ZB. An enriched environment delays the progression from mild cognitive impairment to Alzheimer's disease in senescence-accelerated mouse prone 8 mice. Exp Ther Med 2021; 22:1320. [PMID: 34630674 PMCID: PMC8495563 DOI: 10.3892/etm.2021.10755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 10/16/2020] [Indexed: 12/19/2022] Open
Abstract
A previous study demonstrated that middle-aged (5-6 months of age) senescence-accelerated mouse prone 8 (SAMP8) mice can be used as animal models of mild cognitive impairment (MCI). An enriched environment (EE) can mitigate cognitive decline and decrease the pathological changes associated with various neurodegenerative diseases. In the present study, the learning-memory abilities of SAMP8 mice during the MCI phase (5 months of age) was evaluated and neuropathological changes in the hippocampus were examined after the mice were exposed to an EE for 60 days. In the Morris water maze test, EE-exposed mice demonstrated significantly decreased escape latency and increased time spent in the target quadrant and number of platform crossings compared with control mice. Terminal deoxynucleotidyl transferase dUTP nick end labeling and Nissl staining showed that EE-exposed mice had reduced neuronal apoptosis and increased number of surviving neurons compared with control mice. Golgi staining, transmission electron microscopy, and immunohistochemical staining demonstrated that EE-exposed mice exhibited increased dendritic spine densities among secondary and tertiary apical dendrites; increases in synaptic numerical density, synaptic surface density, and expression of synaptophysin; and reduced deposition of amyloid-β (Aβ) and expression of amyloid-precursor protein (APP) in the hippocampal CA1 region compared with control mice. These results demonstrate that EE exposure effectively decreases neuronal loss and regulates neuronal synaptic plasticity by reducing the expression of APP and the deposition of Aβ in the hippocampal CA1 region, thereby mitigating cognitive decline in SAMP8 mice during the MCI phase and delaying the progression from MCI to Alzheimer's disease.
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Affiliation(s)
- Jian-Zhong Li
- Department of Human Anatomy, Changzhi Medical College, Changzhi, Shangxi 046000, P.R. China
| | - Xing-Hua Hao
- Department of Clinical Psychology, Heping Hospital Affiliated to Changzhi Medical College, Changzhi, Shangxi 046000, P.R. China
| | - Hai-Ping Wu
- Department of Human Anatomy, Changzhi Medical College, Changzhi, Shangxi 046000, P.R. China
| | - Ming Li
- Department of Human Anatomy, Changzhi Medical College, Changzhi, Shangxi 046000, P.R. China
| | - Xue-Min Liu
- Department of Human Anatomy, Changzhi Medical College, Changzhi, Shangxi 046000, P.R. China
| | - Zhi-Bing Wu
- Department of Human Anatomy, Changzhi Medical College, Changzhi, Shangxi 046000, P.R. China
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Tamil Selvan S, Ravichandar R, Kanta Ghosh K, Mohan A, Mahalakshmi P, Gulyás B, Padmanabhan P. Coordination chemistry of ligands: Insights into the design of amyloid beta/tau-PET imaging probes and nanoparticles-based therapies for Alzheimer’s disease. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213659] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Mourtas S, Mavroidi B, Marazioti A, Kannavou M, Sagnou M, Pelecanou M, Antimisiaris SG. Liposomes Decorated with 2-(4'-Aminophenyl)benzothiazole Effectively Inhibit Aβ 1-42 Fibril Formation and Exhibit in Vitro Brain-Targeting Potential. Biomacromolecules 2020; 21:4685-4698. [PMID: 33112137 DOI: 10.1021/acs.biomac.0c00811] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The potential of 2-benzothiazolyl-decorated liposomes as theragnostic systems for Alzheimer's disease was evaluated in vitro, using PEGylated liposomes that were decorated with two types of 2-benzothiazoles: (i) the unsubstituted 2-benzothiazole (BTH) and (ii) the 2-(4-aminophenyl)benzothiazole (AP-BTH). The lipid derivatives of both BTH-lipid and AP-BTH-lipid were synthesized, for insertion in liposome membranes. Liposomes (LIP) containing three different concentrations of benzothiazoles (5, 10, and 20%) were formulated, and their stability, integrity in the presence of serum proteins, and their ability to inhibit β-amyloid (1-42) (Αβ42) peptide aggregation (by circular dichroism (CD) and thioflavin T (ThT) assay), were evaluated. Additionally, the interaction of some LIP with an in vitro model of the blood-brain barrier (BBB) was studied. All liposome types ranged between 92 and 105 nm, with the exception of the 20% AP-BTH-LIP that were larger (180 nm). The 5 and 10% AP-BTH-LIP were stable when stored at 4 °C for 40 days and demonstrated high integrity in the presence of serum proteins for 7 days at 37 °C. Interestingly, CD experiments revealed that the AP-BTH-LIP substantially interacted with Αβ42 peptides and inhibited fibril formation, as verified by ThT assay, in contrast with the BTH-LIP, which had no effect. The 5 and 10% AP-BTH-LIP were the most effective in inhibiting Αβ42 fibril formation. Surprisingly, the AP-BTH-LIP, especially the 5% ones, demonstrated high interaction with brain endothelial cells and high capability to be transported across the BBB model. Taken together, the current results reveal that the 5% AP-BTH-LIP are of high interest as novel targeted theragnostic systems against AD, justifying further in vitro and in vivo exploitation.
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Affiliation(s)
- Spyridon Mourtas
- Laboratory of Pharmaceutical Technology, Dept. of Pharmacy, School of Health Sciences, University of Patras, Rio Patras 26510, Greece.,Institute of Chemical Engineering Sciences, Foundation for Research and Technology Hellas (FORTH/ICES), Rio Patras 26504, Greece
| | - Barbara Mavroidi
- Institute of Biosciences & Applications, National Center for Scientific Research "Demokritos", Athens 15310, Greece
| | - Antonia Marazioti
- Laboratory of Pharmaceutical Technology, Dept. of Pharmacy, School of Health Sciences, University of Patras, Rio Patras 26510, Greece.,Institute of Chemical Engineering Sciences, Foundation for Research and Technology Hellas (FORTH/ICES), Rio Patras 26504, Greece
| | - Maria Kannavou
- Laboratory of Pharmaceutical Technology, Dept. of Pharmacy, School of Health Sciences, University of Patras, Rio Patras 26510, Greece.,Institute of Chemical Engineering Sciences, Foundation for Research and Technology Hellas (FORTH/ICES), Rio Patras 26504, Greece
| | - Marina Sagnou
- Institute of Biosciences & Applications, National Center for Scientific Research "Demokritos", Athens 15310, Greece
| | - Maria Pelecanou
- Institute of Biosciences & Applications, National Center for Scientific Research "Demokritos", Athens 15310, Greece
| | - Sophia G Antimisiaris
- Laboratory of Pharmaceutical Technology, Dept. of Pharmacy, School of Health Sciences, University of Patras, Rio Patras 26510, Greece.,Institute of Chemical Engineering Sciences, Foundation for Research and Technology Hellas (FORTH/ICES), Rio Patras 26504, Greece
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Role of Kalirin and mouse strain in retention of spatial memory training in an Alzheimer's disease model mouse line. Neurobiol Aging 2020; 95:69-80. [PMID: 32768866 DOI: 10.1016/j.neurobiolaging.2020.07.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/05/2020] [Accepted: 07/07/2020] [Indexed: 12/13/2022]
Abstract
Nontransgenic and 3xTG transgenic mice, which express mutant transgenes encoding human amyloid precursor protein (hAPP) along with Alzheimer's disease-associated versions of hTau and a presenilin mutation, acquired the Barnes Maze escape task equivalently at 3-9 months of age. Although nontransgenics retested at 6 and 9 months acquired the escape task more quickly than naïve mice, 3xTG mice did not. Deficits in Kalirin, a multidomain protein scaffold and guanine nucleotide exchange factor that regulates dendritic spines, has been proposed as a contributor to the cognitive decline observed in Alzheimer's disease. To test whether deficits in Kalirin might amplify deficits in 3xTG mice, mice heterozygous/hemizygous for Kalirin and the 3xTG transgenes were generated. Mouse strain, age and sex affected cortical expression of key proteins. hAPP levels in 3xTG mice increased total APP levels at all ages. Kalirin expression showed strong sex-dependent expression in C57 but not B6129 mice. Decreasing Kalirin levels to half had no effect on Barnes Maze task acquisition or retraining in 3xTG hemizygous mice.
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Cifelli JL, Berg KR, Yang J. Benzothiazole amphiphiles promote RasGRF1-associated dendritic spine formation in human stem cell-derived neurons. FEBS Open Bio 2020; 10:386-395. [PMID: 31943943 PMCID: PMC7050256 DOI: 10.1002/2211-5463.12788] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/20/2019] [Accepted: 01/10/2020] [Indexed: 12/24/2022] Open
Abstract
Synaptic dysfunction has been implicated as an early cause of cognitive decline in neurodegenerative diseases (NDDs) such as Alzheimer’s disease (AD). Methods to slow down or reverse the loss of functional synapses, therefore, represent a promising avenue to explore for treating NDDs. We have previously reported the development of a class of benzothiazole amphiphiles (BAMs) that exhibited the capability to improve memory and learning both in wild‐type mice and in an AD rodent model, putatively through promoting RasGRF1‐associated formation of dendritic spines in hippocampal neurons. While these results represent a good first step in exploring a new approach to treating NDDs, the capability of these compounds to increase spine density has not been previously examined in a human neuronal model. Here, we found that neurons derived from differentiated human induced pluripotent stem cells exhibited both an increase in RasGRF1 expression and a phenotypic increase in the density of postsynaptic density protein 95‐positive puncta (which we use to provide an estimate of dendritic spine density) in BAM‐treated vs. control neurons. These results demonstrate that the previously observed spinogenic effects of BAMs in rodent neurons can be recapitulated in a human neuronal model, which further supports the potential utility of BAM agents for treating human diseases associated with spine deficits such as AD or other NDDs.
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Affiliation(s)
- Jessica L Cifelli
- Department of Chemistry and Biochemistry, UC San Diego, La Jolla, CA, USA
| | - Kyle R Berg
- Department of Chemistry and Biochemistry, UC San Diego, La Jolla, CA, USA
| | - Jerry Yang
- Department of Chemistry and Biochemistry, UC San Diego, La Jolla, CA, USA
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11
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Mishra CB, Shalini S, Gusain S, Prakash A, Kumari J, Kumari S, Yadav AK, Lynn AM, Tiwari M. Development of novel N-(6-methanesulfonyl-benzothiazol-2-yl)-3-(4-substituted-piperazin-1-yl)-propionamides with cholinesterase inhibition, anti-β-amyloid aggregation, neuroprotection and cognition enhancing properties for the therapy of Alzheimer's disease. RSC Adv 2020; 10:17602-17619. [PMID: 35515597 PMCID: PMC9053591 DOI: 10.1039/d0ra00663g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 04/19/2020] [Indexed: 12/14/2022] Open
Abstract
A novel series of benzothiazole–piperazine hybrids were rationally designed, synthesized, and evaluated as multifunctional ligands against Alzheimer's disease (AD). The synthesized hybrid molecules illustrated modest to strong inhibition of acetylcholinesterase (AChE) and Aβ1-42 aggregation. Compound 12 emerged as the most potent hybrid molecule exhibiting balanced functions with effective, uncompetitive and selective inhibition against AChE (IC50 = 2.31 μM), good copper chelation, Aβ1-42 aggregation inhibition (53.30%) and disaggregation activities. Confocal laser scanning microscopy and TEM analysis also validate the Aβ fibril inhibition ability of this compound. Furthermore, this compound has also shown low toxicity and is capable of impeding loss of cell viability elicited by H2O2 neurotoxicity in SHSY-5Y cells. Notably, compound 12 significantly improved cognition and spatial memory against scopolamine-induced memory deficit in a mouse model. Hence, our results corroborate the multifunctional nature of novel hybrid molecule 12 against AD and it may be a suitable lead for further development as an effective therapeutic agent for therapy in the future. A novel series of benzothiazole–piperazine hybrids were rationally designed, synthesized, and evaluated as multifunctional ligands against Alzheimer's disease (AD).![]()
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Affiliation(s)
- Chandra Bhushan Mishra
- Dr. B. R. Ambedkar Centre for Biomedical Research
- University of Delhi
- New Delhi 110007
- India
| | - Shruti Shalini
- Dr. B. R. Ambedkar Centre for Biomedical Research
- University of Delhi
- New Delhi 110007
- India
| | - Siddharth Gusain
- Dr. B. R. Ambedkar Centre for Biomedical Research
- University of Delhi
- New Delhi 110007
- India
| | - Amresh Prakash
- Amity Institute of Integrative Sciences and Health (AIISH)
- Amity University Haryana
- Gurgaon-122413
- India
| | - Jyoti Kumari
- Dr. B. R. Ambedkar Centre for Biomedical Research
- University of Delhi
- New Delhi 110007
- India
| | - Shikha Kumari
- Dr. B. R. Ambedkar Centre for Biomedical Research
- University of Delhi
- New Delhi 110007
- India
| | - Anita Kumari Yadav
- Dr. B. R. Ambedkar Centre for Biomedical Research
- University of Delhi
- New Delhi 110007
- India
| | - Andrew M. Lynn
- School of Computational & Integrative Sciences
- Jawaharlal Nehru University
- New Delhi 110067
- India
| | - Manisha Tiwari
- Dr. B. R. Ambedkar Centre for Biomedical Research
- University of Delhi
- New Delhi 110007
- India
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12
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Xiong Y, Mahmood A, Chopp M. Remodeling dendritic spines for treatment of traumatic brain injury. Neural Regen Res 2019; 14:1477-1480. [PMID: 31089035 PMCID: PMC6557113 DOI: 10.4103/1673-5374.255957] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 01/30/2019] [Indexed: 11/21/2022] Open
Abstract
Traumatic brain injury is an important global public health problem. Traumatic brain injury not only causes neural cell death, but also induces dendritic spine degeneration. Spared neurons from cell death in the injured brain may exhibit dendrite damage, dendritic spine degeneration, mature spine loss, synapse loss, and impairment of activity. Dendritic degeneration and synapse loss may significantly contribute to functional impairments and neurological disorders following traumatic brain injury. Normal function of the nervous system depends on maintenance of the functionally intact synaptic connections between the presynaptic and postsynaptic spines from neurons and their target cells. During synaptic plasticity, the numbers and shapes of dendritic spines undergo dynamic reorganization. Enlargement of spine heads and the formation and stabilization of new spines are associated with long-term potentiation, while spine shrinkage and retraction are associated with long-term depression. Consolidation of memory is associated with remodeling and growth of preexisting synapses and the formation of new synapses. To date, there is no effective treatment to prevent dendritic degeneration and synapse loss. This review outlines the current data related to treatments targeting dendritic spines that propose to enhance spine remodeling and improve functional recovery after traumatic brain injury. The mechanisms underlying proposed beneficial effects of therapy targeting dendritic spines remain elusive, possibly including blocking activation of Cofilin induced by beta amyloid, Ras activation, and inhibition of GSK-3 signaling pathway. Further understanding of the molecular and cellular mechanisms underlying synaptic degeneration/loss following traumatic brain injury will advance the understanding of the pathophysiology induced by traumatic brain injury and may lead to the development of novel treatments for traumatic brain injury.
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Affiliation(s)
- Ye Xiong
- Department of Neurosurgery, Henry Ford Hospital, Detroit, MI, USA
| | - Asim Mahmood
- Department of Neurosurgery, Henry Ford Hospital, Detroit, MI, USA
| | - Michael Chopp
- Department of Neurology, Henry Ford Hospital, Detroit, MI, USA
- Department of Physics, Oakland University, Rochester, MI, USA
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13
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Molavipordanjani S, Emami S, Hosseinimehr SJ. 99mTc-labeled Small Molecules for Diagnosis of Alzheimer’s Disease: Past, Recent and Future Perspectives. Curr Med Chem 2019; 26:2166-2189. [DOI: 10.2174/0929867325666180410104023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 01/21/2018] [Accepted: 04/05/2018] [Indexed: 01/22/2023]
Abstract
Background:
Alzheimer’s disease (AD) is an age-related progressive neurodegenerative disease.
Its prominent hallmarks are extracellular deposition of β-amyloids (amyloid plaques), intracellular
neurofibrillary tangles (NTFs), neurodegeneration and finally loss of cognitive function. Hence, AD diagnosis
in the early stage and monitoring of the disease are of great importance.
Methods:
In this review article, we have reviewed recent efforts for design, synthesis and evaluation of
99mTc labeled small molecule for AD imaging purposes.
Results:
These small molecules include derivatives of Congo red, benzothiazole, benzofuran, benzoxazole,
naphthalene, biphenyl, chalcone, flavone, aurone, stilbene, curcumin, dibenzylideneacetone,
quinoxaline, etc. The different aspects of 99mTc-labeled small molecules including chemical structure,
their affinity toward amyloid plaques, BBB permeation and in vivo/vitro stability will be discussed.
Conclusion:
The findings of this review confirm the importance of 99mTc-labeled small molecules for AD
imaging. Future studies based on the pharmacophore of these designed compounds are needed for improvement
of these molecules for clinical application.
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Affiliation(s)
- Sajjad Molavipordanjani
- Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Saeed Emami
- Department of Medicinal Chemistry and Pharmaceutical Sciences Research Center, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Seyed Jalal Hosseinimehr
- Department of Radiopharmacy, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
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14
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Preparation of Benzothiazolyl-Decorated Nanoliposomes. Molecules 2019; 24:molecules24081540. [PMID: 31003552 PMCID: PMC6514897 DOI: 10.3390/molecules24081540] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/14/2019] [Accepted: 04/17/2019] [Indexed: 11/17/2022] Open
Abstract
Amyloid β (Aβ) species are considered as potential targets for the development of diagnostics/therapeutics towards Alzheimer’s disease (AD). Nanoliposomes which are decorated with molecules having high affinity for Aβ species may be considered as potential carriers for AD theragnostics. Herein, benzothiazolyl (BTH) decorated nanoliposomes were prepared for the first time, after synthesis of a lipidic BTH derivative (lipid-BTH). The synthetic pathway included acylation of bis(2-aminophenyl) disulfide with palmitic acid or palmitoyl chloride and subsequent reduction of the oxidized dithiol derivative. The liberated thiols were able to cyclize to the corresponding benzothiazolyl derivatives only after acidification of the reaction mixture. Each step of the procedure was monitored by HPLC analysis in order to identify all the important parameters for the formation of the BTH-group. Finally, the optimal methodology was identified, and was applied for the synthesis of the lipid-BTH derivative. BTH-decorated nanoliposomes were then prepared and characterized for physicochemical properties (size distribution, surface charge, physical stability, and membrane integrity during incubation in presence of buffer and plasma proteins). Pegylated BTH-nanoliposomes were demonstrated to have high integrity in the presence of proteins (in comparison to non-peglated ones) justifying their further exploitation as potential theragnostic systems for AD.
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15
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Polis B, Srikanth KD, Elliott E, Gil-Henn H, Samson AO. L-Norvaline Reverses Cognitive Decline and Synaptic Loss in a Murine Model of Alzheimer's Disease. Neurotherapeutics 2018; 15:1036-1054. [PMID: 30288668 PMCID: PMC6277292 DOI: 10.1007/s13311-018-0669-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The urea cycle is strongly implicated in the pathogenesis of Alzheimer's disease (AD). Arginase-I (ARGI) accumulation at sites of amyloid-beta (Aβ) deposition is associated with L-arginine deprivation and neurodegeneration. An interaction between the arginase II (ARGII) and mTOR-ribosomal protein S6 kinase β-1 (S6K1) pathways promotes inflammation and oxidative stress. In this study, we treated triple-transgenic (3×Tg) mice exhibiting increased S6K1 activity and wild-type (WT) mice with L-norvaline, which inhibits both arginase and S6K1. The acquisition of spatial memory was significantly improved in the treated 3×Tg mice, and the improvement was associated with a substantial reduction in microgliosis. In these mice, increases in the density of dendritic spines and expression levels of neuroplasticity-related proteins were followed by a decline in the levels of Aβ toxic oligomeric and fibrillar species in the hippocampus. The findings point to an association of local Aβ-driven and immune-mediated responses with altered L-arginine metabolism, and they suggest that arginase and S6K1 inhibition by L-norvaline may delay the progression of AD.
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Affiliation(s)
- Baruh Polis
- Drug Discovery Laboratory, The Azrieli Faculty of Medicine, Bar-Ilan University, 1311502, Safed, Israel.
- Laboratory of Cell Migration and Invasion, The Azrieli Faculty of Medicine, Bar-Ilan University, 1311502, Safed, Israel.
| | - Kolluru D Srikanth
- Laboratory of Cell Migration and Invasion, The Azrieli Faculty of Medicine, Bar-Ilan University, 1311502, Safed, Israel
- Laboratory of Molecular and Behavioral Neuroscience, The Azrieli Faculty of Medicine, Bar-Ilan University, 8th Henrietta Szold Street, P.O. Box 1589, 1311502, Safed, Israel
| | - Evan Elliott
- Laboratory of Molecular and Behavioral Neuroscience, The Azrieli Faculty of Medicine, Bar-Ilan University, 8th Henrietta Szold Street, P.O. Box 1589, 1311502, Safed, Israel
| | - Hava Gil-Henn
- Laboratory of Cell Migration and Invasion, The Azrieli Faculty of Medicine, Bar-Ilan University, 1311502, Safed, Israel
| | - Abraham O Samson
- Drug Discovery Laboratory, The Azrieli Faculty of Medicine, Bar-Ilan University, 1311502, Safed, Israel
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16
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Zhang Y, Chopp M, Rex CS, Simmon VF, Sarraf ST, Zhang ZG, Mahmood A, Xiong Y. A Small Molecule Spinogenic Compound Enhances Functional Outcome and Dendritic Spine Plasticity in a Rat Model of Traumatic Brain Injury. J Neurotrauma 2018; 36:589-600. [PMID: 30014757 DOI: 10.1089/neu.2018.5790] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The tetra (ethylene glycol) derivative of benzothiazole aniline (SPG101) has been shown to improve dendritic spine density and cognitive memory in the triple transgenic mouse model of Alzheimer disease (AD) when administered intraperitoneally. The present study was designed to investigate the therapeutic effects of SPG101 on dendritic spine density and morphology and sensorimotor and cognitive functional recovery in a rat model of traumatic brain injury (TBI) induced by controlled cortical impact (CCI). Young adult male Wistar rats with CCI were randomly divided into the following two groups (n = 7/group): (1) Vehicle, and (2) SPG101. SPG101 (30 mg/kg) dissolved in vehicle (1% dimethyl sulfoxide in phosphate buffered saline) or Vehicle were intraperitoneally administered starting at 1 h post-injury and once daily for the next 34 days. Sensorimotor deficits were assessed using a modified neurological severity score and adhesive removal and foot fault tests. Cognitive function was measured by Morris water maze, novel object recognition (NOR), and three-chamber social recognition tests. The animals were sacrificed 35 days after injury, and their brains were processed for measurement of dendritic spine density and morphology using ballistic dye labeling. Compared with the vehicle treatment, SPG101 treatment initiated 1 h post-injury significantly improved sensorimotor functional recovery (days 7-35, p < 0.0001), spatial learning (days 32-35, p < 0.0001), NOR (days 14 and 35, p < 0.0001), social recognition (days 14 and 35, p < 0.0001). Further, treatment significantly increased dendritic spine density in the injured cortex (p < 0.05), decreased heterogeneous distribution of spine lengths in the injured cortex and hippocampus (p < 0.0001), modifications that are associated with the promotion of spine maturation in these brain regions. In summary, treatment with SPG101 initiated 1 h post-injury and continued for an additional 34 days improves both sensorimotor and cognitive functional recovery, indicating that SPG101 acts as a spinogenic agent and may have potential as a novel treatment of TBI.
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Affiliation(s)
- Yanlu Zhang
- 1 Department of Neurosurgery, Henry Ford Hospital , Detroit, Michigan
| | - Michael Chopp
- 2 Department of Neurology, Henry Ford Hospital , Detroit, Michigan.,3 Department of Physics, Oakland University , Rochester, Michigan
| | | | | | | | - Zheng Gang Zhang
- 2 Department of Neurology, Henry Ford Hospital , Detroit, Michigan
| | - Asim Mahmood
- 1 Department of Neurosurgery, Henry Ford Hospital , Detroit, Michigan
| | - Ye Xiong
- 1 Department of Neurosurgery, Henry Ford Hospital , Detroit, Michigan
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17
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A benzothiazole/piperazine derivative with acetylcholinesterase inhibitory activity: Improvement in streptozotocin-induced cognitive deficits in rats. Pharmacol Rep 2017; 69:1349-1356. [DOI: 10.1016/j.pharep.2017.06.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 05/05/2017] [Accepted: 06/16/2017] [Indexed: 01/12/2023]
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18
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Inhibition of glycogen synthase kinase-3 by BTA-EG 4 reduces tau abnormalities in an organotypic brain slice culture model of Alzheimer's disease. Sci Rep 2017; 7:7434. [PMID: 28785087 PMCID: PMC5547074 DOI: 10.1038/s41598-017-07906-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 06/29/2017] [Indexed: 11/08/2022] Open
Abstract
Organotypic brain slice culture models provide an alternative to early stage in vivo studies as an integrated tissue system that can recapitulate key disease features, thereby providing an excellent platform for drug screening. We recently described a novel organotypic 3xTg-AD mouse brain slice culture model with key Alzheimer’s disease-like changes. We now highlight the potential of this model for testing disease-modifying agents and show that results obtained following in vivo treatment are replicated in brain slice cultures from 3xTg-AD mice. Moreover, we describe novel effects of the amyloid-binding tetra (ethylene glycol) derivative of benzothiazole aniline, BTA-EG4, on tau. BTA-EG4 significantly reduced tau phosphorylation in the absence of any changes in the amounts of amyloid precursor protein, amyloid-β or synaptic proteins. The reduction in tau phosphorylation was associated with inactivation of the Alzheimer’s disease-relevant major tau kinase, GSK-3. These findings highlight the utility of 3xTg-AD brain slice cultures as a rapid and reliable in vitro method for drug screening prior to in vivo testing. Furthermore, we demonstrate novel tau-directed effects of BTA-EG4 that are likely related to the ability of this agent to inactivate GSK-3. Our findings support the further exploration of BTA-EG4 as a candidate therapeutic for Alzheimer’s disease.
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19
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Cindrić M, Jambon S, Harej A, Depauw S, David-Cordonnier MH, Kraljević Pavelić S, Karminski-Zamola G, Hranjec M. Novel amidino substituted benzimidazole and benzothiazole benzo[ b ]thieno-2-carboxamides exert strong antiproliferative and DNA binding properties. Eur J Med Chem 2017; 136:468-479. [DOI: 10.1016/j.ejmech.2017.05.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/02/2017] [Accepted: 05/03/2017] [Indexed: 01/05/2023]
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20
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Zhao B, Pan Y, Wang Z, Xu H, Song X. Hyperbaric Oxygen Pretreatment Improves Cognition and Reduces Hippocampal Damage Via p38 Mitogen-Activated Protein Kinase in a Rat Model. Yonsei Med J 2017; 58:131-138. [PMID: 27873505 PMCID: PMC5122628 DOI: 10.3349/ymj.2017.58.1.131] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/26/2016] [Accepted: 07/06/2016] [Indexed: 11/28/2022] Open
Abstract
PURPOSE To investigate the effects of hyperbaric oxygen (HBO) pretreatment on cognitive decline and neuronal damage in an Alzheimer's disease (AD) rat model. MATERIALS AND METHODS Rats were divided into three groups: normal saline (NS), AD, and HBO+AD. In the AD group, amyloid β peptide (Aβ)₁₋₄₀ was injected into the hippocampal CA1 region of the brain. NS rats received NS injection. In the HBO+AD group, rats received 5 days of daily HBO therapy following Aβ₁₋₄₀ injection. Learning and memory capabilities were examined using the Morris water maze task. Neuronal damage and astrocyte activation were evaluated by hematoxylin-eosin staining and immunohistochemistry, respectively. Dendritic spine density was determined by Golgi-Cox staining. Tumor necrosis factor-α, interleukin-1β, and interleukin-10 production was assessed by enzyme-linked immunosorbent assay. Neuron apoptosis was evaluated by terminal deoxynucleotidyl transferase dUTP nick end labeling. Protein expression was examined by western blotting. RESULTS Learning and memory dysfunction was ameliorated in the HBO+AD group, as shown by significantly lower swimming distances and escape latency, compared to the AD group. Lower rates of neuronal damage, astrocyte activation, dendritic spine loss, and hippocampal neuron apoptosis were seen in the HBO+AD than in the AD group. A lower rate of hippocampal p38 mitogen-activated protein kinase (MAPK) phosphorylation was observed in the HBO+AD than in the AD group. CONCLUSION HBO pretreatment improves cognition and reduces hippocampal damage via p38 MAPK in AD rats.
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Affiliation(s)
- Baisong Zhao
- Department of Anesthesiology, Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Yongying Pan
- Department of Anesthesiology, Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Zixin Wang
- Department of Anesthesiology, Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Haiping Xu
- Department of Anesthesiology, Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Xingrong Song
- Department of Anesthesiology, Guangzhou Women and Children's Medical Center, Guangzhou, China.
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21
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Demir Özkay Ü, Can ÖD, Sağlık BN, Acar Çevik U, Levent S, Özkay Y, Ilgın S, Atlı Ö. Design, synthesis, and AChE inhibitory activity of new benzothiazole–piperazines. Bioorg Med Chem Lett 2016; 26:5387-5394. [DOI: 10.1016/j.bmcl.2016.10.041] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 10/12/2016] [Accepted: 10/13/2016] [Indexed: 01/01/2023]
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22
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Lee K, Kim H, An K, Kwon OB, Park S, Cha JH, Kim MH, Lee Y, Kim JH, Cho K, Kim HS. Replenishment of microRNA-188-5p restores the synaptic and cognitive deficits in 5XFAD Mouse Model of Alzheimer's Disease. Sci Rep 2016; 6:34433. [PMID: 27708404 PMCID: PMC5052619 DOI: 10.1038/srep34433] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 09/12/2016] [Indexed: 02/07/2023] Open
Abstract
MicroRNAs have emerged as key factors in development, neurogenesis and synaptic functions in the central nervous system. In the present study, we investigated a pathophysiological significance of microRNA-188-5p (miR-188-5p) in Alzheimer's disease (AD). We found that oligomeric Aβ1-42 treatment diminished miR-188-5p expression in primary hippocampal neuron cultures and that miR-188-5p rescued the Aβ1-42-mediated synapse elimination and synaptic dysfunctions. Moreover, the impairments in cognitive function and synaptic transmission observed in 7-month-old five familial AD (5XFAD) transgenic mice, were ameliorated via viral-mediated expression of miR-188-5p. miR-188-5p expression was down-regulated in the brain tissues from AD patients and 5XFAD mice. The addition of miR-188-5p rescued the reduction in dendritic spine density in the primary hippocampal neurons treated with oligomeric Aβ1-42 and cultured from 5XFAD mice. The reduction in the frequency of mEPSCs was also restored by addition of miR-188-5p. The impairments in basal fEPSPs and cognition observed in 7-month-old 5XFAD mice were ameliorated via the viral-mediated expression of miR-188-5p in the hippocampus. Furthermore, we found that miR-188 expression is CREB-dependent. Taken together, our results suggest that dysregulation of miR-188-5p expression contributes to the pathogenesis of AD by inducing synaptic dysfunction and cognitive deficits associated with Aβ-mediated pathophysiology in the disease.
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Affiliation(s)
- Kihwan Lee
- Department of Pharmacology, College of Medicine, Seoul National University, Seoul, 110-799, Republic of Korea
| | - Hyunju Kim
- Department of Pharmacology, College of Medicine, Seoul National University, Seoul, 110-799, Republic of Korea
| | - Kyongman An
- Department of Life Science, POSTECH, Pohang, Gyeongbuk, 790-784, Republic of Korea
| | - Oh-Bin Kwon
- Department of Life Science, POSTECH, Pohang, Gyeongbuk, 790-784, Republic of Korea
| | - Sungjun Park
- Department of Life Science, POSTECH, Pohang, Gyeongbuk, 790-784, Republic of Korea
| | - Jin Hee Cha
- Department of Physiology, College of Medicine, Seoul National University, Seoul, 110-799, Republic of Korea
| | - Myoung-Hwan Kim
- Department of Physiology, College of Medicine, Seoul National University, Seoul, 110-799, Republic of Korea
| | - Yoontae Lee
- Department of Life Science, POSTECH, Pohang, Gyeongbuk, 790-784, Republic of Korea
| | - Joung-Hun Kim
- Department of Life Science, POSTECH, Pohang, Gyeongbuk, 790-784, Republic of Korea
| | - Kwangwook Cho
- Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology (LINE), Faculty of Medicine and Dentistry, University of Bristol, Whitson Street, Bristol BS1 3NY, UK.,Centre for Synaptic Plasticity, School of Clinical Sciences, Faculty of Medicine and Dentistry, University of Bristol, Whitson Street, Bristol BS1 3NY, UK
| | - Hye-Sun Kim
- Department of Pharmacology, College of Medicine, Seoul National University, Seoul, 110-799, Republic of Korea.,Seoul National University Bundang Hospital, College of Medicine, Seoul National University, Seongnam, Gyeonggi, 463-707, Republic of Korea
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23
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Cifelli JL, Chung TS, Liu H, Prangkio P, Mayer M, Yang J. Benzothiazole Amphiphiles Ameliorate Amyloid β-Related Cell Toxicity and Oxidative Stress. ACS Chem Neurosci 2016; 7:682-8. [PMID: 27055069 DOI: 10.1021/acschemneuro.6b00085] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Oxidative stress from the increase of reactive oxygen species in cells is a common part of the normal aging process and is accelerated in patients with Alzheimer's disease (AD). Herein, we report the evaluation of three benzothiazole amphiphiles (BAMs) that exhibit improved biocompatibility without loss of biological activity against amyloid-β induced cell damage compared to a previously reported hexa(ethylene glycol) derivative of benzothiazole aniline (BTA-EG6). The reduced toxicity of these BAM agents compared to BTA-EG6 corresponded with their reduced propensity to induce membrane lysis. In addition, all of the new BAMs were capable of protecting differentiated SH-SY5Y neuroblastoma cells from toxicity and concomitant oxidative stress induced by AD-related aggregated Aβ (1-42) peptides. Binding and microscopy studies support that these BAM agents target Aβ and inhibit the interactions of catalase with Aβ in cells, which, in turn, can account for an observed inhibition of Aβ-induced increases in hydrogen peroxide in cells treated with these compounds. These results support that this family of benzothiazole amphiphiles may have therapeutic potential for treating cellular damage associated with AD and other Aβ-related neurologic diseases.
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Affiliation(s)
- Jessica L. Cifelli
- Department
of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358, United States
| | - Tim S. Chung
- Department
of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358, United States
| | - Haiyan Liu
- Department
of Biomedical Engineering, University of Michigan, 1101 Beal Avenue, Ann Arbor, Michigan 48109, United States
| | - Panchika Prangkio
- Department
of Biomedical Engineering, University of Michigan, 1101 Beal Avenue, Ann Arbor, Michigan 48109, United States
| | - Michael Mayer
- Department
of Biomedical Engineering, University of Michigan, 1101 Beal Avenue, Ann Arbor, Michigan 48109, United States
| | - Jerry Yang
- Department
of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358, United States
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24
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Cifelli JL, Dozier L, Chung TS, Patrick GN, Yang J. Benzothiazole Amphiphiles Promote the Formation of Dendritic Spines in Primary Hippocampal Neurons. J Biol Chem 2016; 291:11981-92. [PMID: 27022020 DOI: 10.1074/jbc.m115.701482] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Indexed: 12/31/2022] Open
Abstract
The majority of excitatory synapses in the brain exist on dendritic spines. Accordingly, the regulation of dendritic spine density in the hippocampus is thought to play a central role in learning and memory. The development of novel methods to control spine density could, therefore, have important implications for treatment of a host of neurodegenerative and developmental cognitive disorders. Herein, we report the design and evaluation of a new class of benzothiazole amphiphiles that exhibit a dose-dependent response leading to an increase in dendritic spine density in primary hippocampal neurons. Cell exposure studies reveal that the increase in spine density can persist for days in the presence of these compounds, but returns to normal spine density levels within 24 h when the compounds are removed, demonstrating the capability to reversibly control spinogenic activity. Time-lapse imaging of dissociated hippocampal neuronal cultures shows that these compounds promote a net increase in spine density through the formation of new spines. Biochemical studies support that promotion of spine formation by these compounds is accompanied by Ras activation. These spinogenic molecules were also capable of inhibiting a suspected mechanism for dendritic spine loss induced by Alzheimer-related aggregated amyloid-β peptides in primary neurons. Evaluation of this new group of spinogenic agents reveals that they also exhibit relatively low toxicity at concentrations displaying activity. Collectively, these results suggest that small molecules that promote spine formation could be potentially useful for ameliorating cognitive deficiencies associated with spine loss in neurodegenerative diseases such as Alzheimer disease, and may also find use as general cognitive enhancers.
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Affiliation(s)
| | - Lara Dozier
- the Section of Neurobiology in the Division of Biological Sciences, University of California, San Diego, La Jolla, California 92093-0358
| | - Tim S Chung
- From the Department of Chemistry and Biochemistry and
| | - Gentry N Patrick
- the Section of Neurobiology in the Division of Biological Sciences, University of California, San Diego, La Jolla, California 92093-0358
| | - Jerry Yang
- From the Department of Chemistry and Biochemistry and
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25
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Turhanen PA, Vepsäläinen JJ. Preparation of useful building blocks, α-iodo- and bromoalkanols from cyclic ethers using the Dowex H +/NaX (X = I, Br) approach. RSC Adv 2016. [DOI: 10.1039/c5ra20813k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Novel method for preparation of α-iodo- and bromoalkanols directly from cyclic ethers has been developed. Prepared compounds are highly important building blocks in synthetic chemistry for the preparation of more complex molecules.
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Affiliation(s)
- Petri A. Turhanen
- University of Eastern Finland
- School of Pharmacy
- Biocenter Kuopio
- Kuopio
- Finland
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26
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Lee NJ, Song JM, Cho HJ, Sung YM, Lee T, Chung A, Hong SH, Cifelli JL, Rubinshtein M, Habib LK, Capule CC, Turner RS, Pak DTS, Yang J, Hoe HS. Hexa (ethylene glycol) derivative of benzothiazole aniline promotes dendritic spine formation through the RasGRF1-Ras dependent pathway. Biochim Biophys Acta Mol Basis Dis 2015; 1862:284-95. [PMID: 26675527 DOI: 10.1016/j.bbadis.2015.12.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 11/16/2015] [Accepted: 12/04/2015] [Indexed: 11/24/2022]
Abstract
Our recent study demonstrated that an amyloid-β binding molecule, BTA-EG4, increases dendritic spine number via Ras-mediated signaling. To potentially optimize the potency of the BTA compounds, we synthesized and evaluated an amyloid-β binding analog of BTA-EG4 with increased solubility in aqueous solution, BTA-EG6. We initially examined the effects of BTA-EG6 on dendritic spine formation and found that BTA-EG6-treated primary hippocampal neurons had significantly increased dendritic spine number compared to control treatment. In addition, BTA-EG6 significantly increased the surface level of AMPA receptors. Upon investigation into the molecular mechanism by which BTA-EG6 promotes dendritic spine formation, we found that BTA-EG6 may exert its effects on spinogenesis via RasGRF1-ERK signaling, with potential involvement of other spinogenesis-related proteins such as Cdc42 and CDK5. Taken together, our data suggest that BTA-EG6 boosts spine and synapse number, which may have a beneficial effect of enhancing neuronal and synaptic function in the normal healthy brain.
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Affiliation(s)
- Nathanael J Lee
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Jung Min Song
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Hyun-Ji Cho
- Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), Cheomdan-ro, Dong-gu, Daegu 701-300, Republic of Korea
| | - You Me Sung
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20057, USA; Department of Neurology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Taehee Lee
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Andrew Chung
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Sung-Ha Hong
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20057, USA; Department of Neurology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Jessica L Cifelli
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - Mark Rubinshtein
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - Lila K Habib
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Christina C Capule
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - R Scott Turner
- Department of Neurology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Daniel T S Pak
- Department of Pharmacology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Jerry Yang
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - Hyang-Sook Hoe
- Department of Neuroscience, Georgetown University Medical Center, Washington, DC 20057, USA; Department of Neurology, Georgetown University Medical Center, Washington, DC 20057, USA; Department of Neural Development and Disease, Korea Brain Research Institute (KBRI), Cheomdan-ro, Dong-gu, Daegu 701-300, Republic of Korea.
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27
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Tian Y, Zhang X, Li Y, Shoup TM, Teng X, Elmaleh DR, Moore A, Ran C. Crown ethers attenuate aggregation of amyloid beta of Alzheimer's disease. Chem Commun (Camb) 2014; 50:15792-5. [PMID: 25372154 DOI: 10.1039/c4cc06029f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this report, we reasoned that non-covalent modification of amyloid beta (Aβ) by crown ethers could inhibit its aggregation. We demonstrated that PiB-C, a conjugate PiB and crown ether, could significantly reduce the aggregation in vitro. Additionally, two-photon imaging showed that PiB-C could efficiently label Aβ plaques and CAAs in AD mice.
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Affiliation(s)
- Yanli Tian
- Molecular Imaging Laboratory, A. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital/Harvard Medical School, Building 75, Charlestown, Massachusetts 02129, USA.
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28
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Gerson JE, Castillo-Carranza DL, Kayed R. Advances in therapeutics for neurodegenerative tauopathies: moving toward the specific targeting of the most toxic tau species. ACS Chem Neurosci 2014; 5:752-69. [PMID: 25075869 DOI: 10.1021/cn500143n] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Neurodegenerative disease is one of the greatest health concerns today and with no effective treatment in sight, it is crucial that researchers find a safe and successful therapeutic. While neurofibrillary tangles are considered the primary tauopathy hallmark, more evidence continues to come to light to suggest that soluble, intermediate tau aggregates--tau oligomers--are the most toxic species in disease. These intermediate tau species may also be responsible for the spread of pathology, suggesting that oligomeric tau may be the best therapeutic target. Here, we summarize results for the modulation of tau by molecular chaperones, small molecules and aggregation inhibitors, post-translational modifications, immunotherapy, other techniques, and future directions.
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Affiliation(s)
- Julia E. Gerson
- Department
of Neurology, George and Cynthia Mitchell
Center for Alzheimer’s Disease Research, University of Texas Medical Branch, Galveston, Texas 77555, United States
| | - Diana L. Castillo-Carranza
- Department
of Neurology, George and Cynthia Mitchell
Center for Alzheimer’s Disease Research, University of Texas Medical Branch, Galveston, Texas 77555, United States
| | - Rakez Kayed
- Department
of Neurology, George and Cynthia Mitchell
Center for Alzheimer’s Disease Research, University of Texas Medical Branch, Galveston, Texas 77555, United States
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