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Weaver RH, Bolkan C, Coatsworth JD, Hill LG. Introduction to the Special Issue: Toward a Lifespan Prevention Science - A Focus on Middle and Late Adulthood. PREVENTION SCIENCE : THE OFFICIAL JOURNAL OF THE SOCIETY FOR PREVENTION RESEARCH 2023; 24:799-807. [PMID: 37249730 DOI: 10.1007/s11121-023-01555-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/12/2023] [Indexed: 05/31/2023]
Abstract
The interdisciplinary field of prevention science was founded on the premise of a lifespan developmental model. Prevention scientists have developed a strong set of tools and intervention technologies for understanding and potentially modifying risk and protective factors through early adulthood. However, there is a demographic imperative to apply prevention science principles to health issues in middle and late adulthood. The articles in this special issue utilize a variety of methods to investigate important scientific questions about how theories, methodologies, and interventions applied in the science of prevention can be usefully integrated into the study of health and wellness in middle and late adulthood. More specifically, contributions (1) highlight current empirical research that draws on lifespan developmental science to address the unique prevention and intervention needs in middle and late adulthood, (2) illustrate the opportunities and challenges of a lifespan approach to prevention science with special attention to middle and late adulthood, and (3) identify additional areas that prevention science can contribute to advancements in middle and late adulthood. These articles provide a glimpse into the challenges and opportunities at the intersection of prevention science and gerontology. As a field, we have much room to grow in leveraging innovative tools, approaches, and efforts to best support older adults' physical, mental, and social health, particularly for diverse and under-served populations.
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Affiliation(s)
- Raven H Weaver
- Department of Human Development, Washington State University, Pullman, WA, USA.
| | - Cory Bolkan
- Department of Human Development, Washington State University, Vancouver, WA, USA
| | | | - Laura G Hill
- Department of Human Development, Washington State University, Pullman, WA, USA
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Li Q, Xiao M, Li N, Cai W, Zhao C, Liu B, Zeng F. Application of
Caenorhabditis elegans
in the evaluation of food nutrition: A review. EFOOD 2023. [DOI: 10.1002/efd2.68] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
Affiliation(s)
- Quancen Li
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
| | - Meifang Xiao
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
| | - Na Li
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
| | - Wenwen Cai
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
| | - Chao Zhao
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
- College of Marine Sciences Fujian Agriculture and Forestry University Fuzhou China
- Engineering Research Center of Fujian Subtropical Fruit and Vegetable Processing Fujian Agriculture and Forestry University Fuzhou China
| | - Bin Liu
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
- Engineering Research Center of Fujian Subtropical Fruit and Vegetable Processing Fujian Agriculture and Forestry University Fuzhou China
- National Engineering Research Center of JUNCAO Technology Fujian Agriculture and Forestry University Fuzhou China
| | - Feng Zeng
- College of Food Science Fujian Agriculture and Forestry University Fuzhou China
- Engineering Research Center of Fujian Subtropical Fruit and Vegetable Processing Fujian Agriculture and Forestry University Fuzhou China
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Zhong J, Boafo J, Brody AA, Wu B, Sadarangani AT. A qualitative analysis of communication workflows between adult day service centers and primary care providers. J Am Med Inform Assoc 2022; 29:882-890. [PMID: 34964467 PMCID: PMC9006686 DOI: 10.1093/jamia/ocab284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/05/2021] [Accepted: 12/17/2021] [Indexed: 12/05/2022] Open
Abstract
OBJECTIVES Our study documented communication workflows across adult day care centers (ADCs) and primary care providers (PCPs) around complex needs of persons living with dementia (PLWD). We also identified barriers and facilitators to productive communication in clinical decision support and clinical information systems. MATERIALS AND METHODS We conducted 6 focus groups with ADC staff (N = 33) and individual semistructured interviews with PCPs (N = 22) in California. The eHealth Enhanced Chronic Care Model was used to frame the directed qualitative content analysis. RESULTS Our results captured cumbersome and ineffective workflows currently used to exchange information across PCPs and ADCs. Stakeholders characterized current communication as (1) infrequent, (2) delayed, (3) incomplete, (4) unreliable, (5) irrelevant, and (6) generic. Conversely, communication that was bidirectional, relevant, succinct, and interdisciplinary was needed to elevate the standard of care for PLWD. DISCUSSION AND CONCLUSION ADCs possess a wealth of information that can support clinical decision-making across community-based providers involved in the care of PLWD, especially PCPs. However, effective information exchange is mired by complicated workflows that rely on antiquated technologies (eg, facsimile) and standard templates. Current information exchange largely focuses on satisfying regulatory guidelines rather than supporting clinical decision-making. Integrating community-based services into the health care continuum is a necessary step in elevating the standard of care for PLWD. In the absence of interoperable electronic health records, which may not be financially viable for ADCs, other options, such as mobile health, should be explored to facilitate productive information exchange of personalized relevant information.
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Affiliation(s)
- Jie Zhong
- New York University Rory Meyers College of Nursing, New York City, New York, USA
| | - Jonelle Boafo
- New York University Rory Meyers College of Nursing, New York City, New York, USA
| | - Abraham A Brody
- Hartford Institute for Geriatric Nursing, New York University Rory Meyers College of Nursing, New York City, New York, USA
- Division of Geriatric Medicine and Palliative Care, Department of Medicine, New York University Grossman School of Medicine, New York City, New York, USA
| | - Bei Wu
- Hartford Institute for Geriatric Nursing, New York University Rory Meyers College of Nursing, New York City, New York, USA
| | - and Tina Sadarangani
- Hartford Institute for Geriatric Nursing, New York University Rory Meyers College of Nursing, New York City, New York, USA
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Pei X, Hu F, Luo F, Huang X, Li X, Xing S, Long D. The neuroprotective effects of alpha-lipoic acid on an experimental model of Alzheimer's disease in PC12 cells. J Appl Toxicol 2021; 42:285-294. [PMID: 34133789 DOI: 10.1002/jat.4213] [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: 02/06/2021] [Revised: 06/07/2021] [Accepted: 06/07/2021] [Indexed: 11/09/2022]
Abstract
With the growth of the aging population, the prevalence of Alzheimer's disease (AD) has increased and influenced the work and daily life of AD patients, imposing a heavy burden on society and the patients' families. AD is a progressive disease with a long duration, and the pathogenesis is very complicated. Here, we found that alpha-lipoic acid (LA), an endogenous, naturally synthesized compound, could attenuate amyloid beta fragment (Aβ25-35 )-induced PC12 cell toxicity. Aβ25-35 treatment largely decreased the viability of PC12 cells, increased reactive oxygen species (ROS) levels, and increased the percentage of apoptotic cells, which were accompanied by changes in the expression of the apoptosis-related genes. Further, the Wnt pathway was inactivated, and the expression of Wnt pathway-related proteins such as Frizzled2, GSK3β, and phosphorylated GSK3β were dysregulated after Aβ25-35 treatment. LA efficiently attenuated Aβ25-35 -induced PC12 cell apoptosis and downregulated the phosphorylation-mediated degradation of β-catenin as well as GSK3β. Our results demonstrate that LA rescues Aβ25-35 -induced neurocytotoxicity through the Wnt-β-catenin pathway.
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Affiliation(s)
- Xinrong Pei
- Institute for Food and Cosmetics Control, National Institutes for Food and Drug Control, Beijing, China
| | - Fangyan Hu
- School of Public Health, University of South China, Hengyang, China
| | - Feiya Luo
- Institute for Food and Cosmetics Control, National Institutes for Food and Drug Control, Beijing, China
| | - Xianglu Huang
- Institute for Food and Cosmetics Control, National Institutes for Food and Drug Control, Beijing, China
| | - Xiaoling Li
- School of Public Health, University of South China, Hengyang, China
| | - Shuxia Xing
- Institute for Food and Cosmetics Control, National Institutes for Food and Drug Control, Beijing, China
| | - Dingxin Long
- School of Public Health, University of South China, Hengyang, China
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McCormick JW, Ammerman L, Chen G, Vogel PD, Wise JG. Transport of Alzheimer's associated amyloid-β catalyzed by P-glycoprotein. PLoS One 2021; 16:e0250371. [PMID: 33901197 PMCID: PMC8075256 DOI: 10.1371/journal.pone.0250371] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 04/06/2021] [Indexed: 12/24/2022] Open
Abstract
P-glycoprotein (P-gp) is a critical membrane transporter in the blood brain barrier (BBB) and is implicated in Alzheimer’s disease (AD). However, previous studies on the ability of P-gp to directly transport the Alzheimer’s associated amyloid-β (Aβ) protein have produced contradictory results. Here we use molecular dynamics (MD) simulations, transport substrate accumulation studies in cell culture, and biochemical activity assays to show that P-gp actively transports Aβ. We observed transport of Aβ40 and Aβ42 monomers by P-gp in explicit MD simulations of a putative catalytic cycle. In in vitro assays with P-gp overexpressing cells, we observed enhanced accumulation of fluorescently labeled Aβ42 in the presence of Tariquidar, a potent P-gp inhibitor. We also showed that Aβ42 stimulated the ATP hydrolysis activity of isolated P-gp in nanodiscs. Our findings expand the substrate profile of P-gp, and suggest that P-gp may contribute to the onset and progression of AD.
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Affiliation(s)
- James W. McCormick
- Department of Biological Sciences, Southern Methodist University, Dallas, Texas, United States of America
- Green Center for Systems Biology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- * E-mail: (JGW); (JWM)
| | - Lauren Ammerman
- Department of Biological Sciences, Southern Methodist University, Dallas, Texas, United States of America
- The Center for Drug Discovery, Design and Delivery, Southern Methodist University, Dallas, Texas, United States of America
- The Center for Scientific Computation, Southern Methodist University, Dallas, Texas, United States of America
| | - Gang Chen
- Department of Biological Sciences, Southern Methodist University, Dallas, Texas, United States of America
- The Center for Drug Discovery, Design and Delivery, Southern Methodist University, Dallas, Texas, United States of America
| | - Pia D. Vogel
- Department of Biological Sciences, Southern Methodist University, Dallas, Texas, United States of America
- The Center for Drug Discovery, Design and Delivery, Southern Methodist University, Dallas, Texas, United States of America
| | - John G. Wise
- Department of Biological Sciences, Southern Methodist University, Dallas, Texas, United States of America
- The Center for Drug Discovery, Design and Delivery, Southern Methodist University, Dallas, Texas, United States of America
- The Center for Scientific Computation, Southern Methodist University, Dallas, Texas, United States of America
- * E-mail: (JGW); (JWM)
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Tyagi A, Mirita C, Taher N, Shah I, Moeller E, Tyagi A, Chong T, Pugazhenthi S. Metabolic syndrome exacerbates amyloid pathology in a comorbid Alzheimer's mouse model. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165849. [PMID: 32485218 DOI: 10.1016/j.bbadis.2020.165849] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 05/21/2020] [Accepted: 05/26/2020] [Indexed: 12/15/2022]
Abstract
Alzheimer's disease (AD) often coexists with other aging-associated diseases including obesity, diabetes, hypertension, and cardiovascular diseases. The early stage of these comorbidities is known as metabolic syndrome (MetS) which is highly prevalent in mid-life. An important cause of MetS is the deficiency of SIRT3, a mitochondrial deacetylase which enhances the functions of critical mitochondrial proteins, including metabolic enzymes, by deacetylation. Deletion of Sirt3 gene has been reported to result in the acceleration of MetS. In a recently published study, we demonstrated in the brain of Sirt3-/- mice, downregulation of metabolic enzymes, insulin resistance and elevation of inflammatory markers including microglial proliferation. These findings suggested a novel pathway that could link SIRT3 deficiency to neuroinflammation, an important cause of Alzheimer's pathogenesis. Therefore, we hypothesized that MetS and amyloid pathology may interact through converging pathways of insulin resistance and neuroinflammation in comorbid AD. To investigate these interactions, we crossed Sirt3-/- mice with APP/PS1 mice and successfully generated APP/PS1/Sirt3-/- mice with amyloid pathology and MetS. In these comorbid AD mice, we observed exacerbation of insulin resistance, glucose intolerance, amyloid plaque deposition, markers of neuroinflammation, including elevated expression of IL-1β, TNF-α and Cox-2 at 8 months of age. There was also increased microglial proliferation and activation. Our observations suggest a novel mechanism by which MetS may interact with amyloid pathology during the cellular phase of AD. Therapeutic targeting of SIRT3 in AD with comorbidities may produce beneficial effects.
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Affiliation(s)
- Alpna Tyagi
- Rocky Mountain Regional VA Medical Center, USA; Department of Medicine, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA
| | | | | | - Iman Shah
- Rocky Mountain Regional VA Medical Center, USA
| | | | - Anit Tyagi
- Rocky Mountain Regional VA Medical Center, USA; Department of Medicine, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA
| | | | - Subbiah Pugazhenthi
- Rocky Mountain Regional VA Medical Center, USA; Department of Medicine, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA.
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Worley SL. Reframing Alzheimer's Disease: Guided by a New Research Framework, the Field is Poised For Greater Precision and Promising Horizons. P & T : A PEER-REVIEWED JOURNAL FOR FORMULARY MANAGEMENT 2019; 44:282-289. [PMID: 31080337 PMCID: PMC6487972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This in-depth article on the sixth leading cause of death in the U.S. reports on the optimism of cutting-edge leaders in Alzheimer's disease research. The author examines key considerations such as the status of biomarker tests, and the search for new biomarkers; securing an accurate definition of the disease; risk factors; clinical trials and non-pharmacological studies.
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Seifan A, Ganzer CA, Ryon K, Lin M, Mahmudur R, Adolfo H, Shih C, Jacobs AR, Greenwald M, Isaacson RS. Detecting Non-cognitive Features of Prodromal Neurodegenerative Diseases. Curr Aging Sci 2019; 11:242-249. [PMID: 30845903 PMCID: PMC6635426 DOI: 10.2174/1874609812666190204094233] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 12/29/2018] [Accepted: 01/03/2019] [Indexed: 01/28/2023]
Abstract
BACKGROUND Prodromal Neurodegenerative Disease (ND) due to tauopathies such as Alzheimer's Disease (AD) and Synucleinopathies (SN) such as Parkinson's Disease (PD) and Dementia with Lewy Bodies (DLB) present subtly. Although ND are considered cognitive disorders, in fact ND present with behavioral and even medical symptomatology years to decades prior to the onset of cognitive changes. Recognizing prodromal ND syndromes is a public health priority because ND is common, disabling and expensive. Diagnosing prodromal ND in real world clinical settings is challenging because ND of the same pathology can present with different symptoms in different people. Individual variability in nature and variability in nurture across the life course influence how ND pathology manifests clinically. The objective of this study was to describe how non-cognitive symptoms from behavioral, medical, neurological and psychiatric domains cluster in prodromal and early stages of ND. METHODS This was an observational study of patients receiving routine clinical care for memory disorders. All patients receiving a standardized evaluation including complete neurological history and examination and standardized brief neuropsychological testing. A Principal Component Analysis (PCA) considering emotion, motor, sensory and sleep factors was performed on the entire sample of patients in order to identify co-occurring symptom clusters. All patients received a consensus diagnosis adjudicated by at least two dementia experts. Patients were grouped into Cognitively Normal, Detectable Cognitive Impairment, and Mild Cognitive Impairment categories due to AD and/or PD/LBD or NOS pathology. Symptom cluster scores were compared between clinical diagnostic groups. RESULTS In this study 165 patients completed baseline neuropsychological testing and reported subjective measures of non-cognitive symptoms. Four syndrome specific symptom factors emerged and eight non-specific symptom factors. Symptoms of personality changes, paranoia, hallucinations, cravings, agitation, and changes in appetite grouped together into a cluster consistent with an "SN Non-motor Phenotype". Appetite, walking, balance, hearing, increased falls, and dandruff grouped together into a cluster consistent with an "SN Motor Phenotype". The Prodromal AD phenotype included symptoms of anxiety, irritability, apathy, sleep disturbance and social isolation. The fourth factor included symptoms of increased sweating, twitching, and tremor grouped into a cluster consistent with an Autonomic phenotype. CONCLUSION Non-cognitive features can be reliably measured by self-report in busy clinical settings. Such measurement can be useful in distinguishing patients with different etiologies of ND. Better characterization of unique, prodromal, non-cognitive ND trajectories could improve public health efforts to modify the course of ND for all patients at risk.
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Affiliation(s)
| | - Christine A. Ganzer
- Address correspondence to this author at the Hunter College, Nursing. New York, USA; Tel: 212-481-4338; E-mail:
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Yu X, Li Y, Zou Y, Zheng Y, He Z, Liu Z, Xie W, Wu H. Glutaminyl cyclase inhibitor contributes to the regulation of HSP70, HSP90, actin, and ribosome on gene and protein levels in vitro. J Cell Biochem 2018; 120:9460-9471. [PMID: 30582198 DOI: 10.1002/jcb.28222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 11/15/2018] [Indexed: 11/11/2022]
Abstract
Because of the crucial roles of upregulated glutaminyl cyclase (QC) in the initiation and development of Alzheimer's disease (AD), QC inhibitors are supposed as disease-modifying agents for the treatment of AD. And reported compounds encourage this hypothesis greatly based on the remarkable anti-AD effects in vivo. To illustrate the mechanism in detail, the actions of a selected QC inhibitor (23) were assessed firstly in a cell system here. It was demonstrated that QC activities and the generation of pyroglutamate-modified β-amyloids in PC12 cells were both inhibited obviously after the treatment of 23. A total of 13 and 15 genes were up- and downregulated significantly in treated cells by RNA-sequencing analysis. Quantitative real-time polymerase chain reaction, enzyme-linked immunosorbent assay, WB, and immunofluorescence analysis supported the effects of 23 on the transcriptome of PC12 cells consequently. The expressions of chaperones, heat shock proteins (HSP) 70, and 90, were upreglutated, while gene expression of actin and the level of encoded protein were reduced significantly in PC12 cells with the treatment. Furthermore, the regulations of ribosome were observed after the treatment. These results indicate the potency of 23 to improve the translation, expression and folding regulation of proteins and affect the multivalent cross-linking of cytoskeletal protein and other proteins subsequently in the cell system and might contribute to the understanding of the mechanism of QC inhibitor as potential anti-AD agents.
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Affiliation(s)
- Xi Yu
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, China.,College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Yue Li
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, China
| | - Yongdong Zou
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Yizhi Zheng
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Zhendan He
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, China
| | - Zhigang Liu
- School of Medicine, Shenzhen University, Shenzhen, China
| | - Wenlin Xie
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, China
| | - Haiqiang Wu
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, China.,College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
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Arnold SE, Betensky RA. Multicrossover Randomized Controlled Trial Designs in Alzheimer Disease. Ann Neurol 2018; 84:168-175. [PMID: 30014506 DOI: 10.1002/ana.25280] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/28/2018] [Accepted: 06/24/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Steven E Arnold
- Interdisciplinary Brain Center for Clinical and Translational Research and Department of Neurology, Massachusetts General Hospital, Charlestown, MA
| | - Rebecca A Betensky
- Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, MA
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Li M, Dong Y, Yu X, Li Y, Zou Y, Zheng Y, He Z, Liu Z, Quan J, Bu X, Wu H. Synthesis and Evaluation of Diphenyl Conjugated Imidazole Derivatives as Potential Glutaminyl Cyclase Inhibitors for Treatment of Alzheimer's Disease. J Med Chem 2017; 60:6664-6677. [PMID: 28700245 DOI: 10.1021/acs.jmedchem.7b00648] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
High expression of glutaminyl cyclase (QC) contributes to the initiation of Alzheimer's disease (AD) by catalyzing the generation of neurotoxic pyroglutamate (pE)-modified β-amyloid (Aβ) peptides. Preventing the generation of pE-Aβs by QC inhibition has been suggested as a novel approach to a disease-modifying therapy for AD. In this work, a series of diphenyl conjugated imidazole derivatives (DPCIs) was rationally designed and synthesized. Analogues with this scaffold exhibited potent inhibitory activity against human QC (hQC) and good in vitro blood-brain barrier (BBB) permeability. Further assessments corroborated that the selected hQC inhibitor 28 inhibits the activity of hQC, dramatically reduces the generation of pE-Aβs in cultured cells and in vivo, and improves the behavior of AD mice.
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Affiliation(s)
- Manman Li
- Department of Pharmacy, School of Medicine, Shenzhen University , Shenzhen 518060, China.,College of Life Sciences and Oceanography, Shenzhen University , Shenzhen 518060, China
| | - Yao Dong
- Department of Pharmacy, School of Medicine, Shenzhen University , Shenzhen 518060, China.,College of Life Sciences and Oceanography, Shenzhen University , Shenzhen 518060, China
| | - Xi Yu
- Department of Pharmacy, School of Medicine, Shenzhen University , Shenzhen 518060, China.,College of Life Sciences and Oceanography, Shenzhen University , Shenzhen 518060, China
| | - Yue Li
- Department of Pharmacy, School of Medicine, Shenzhen University , Shenzhen 518060, China
| | - Yongdong Zou
- College of Life Sciences and Oceanography, Shenzhen University , Shenzhen 518060, China
| | - Yizhi Zheng
- College of Life Sciences and Oceanography, Shenzhen University , Shenzhen 518060, China
| | - Zhendan He
- Department of Pharmacy, School of Medicine, Shenzhen University , Shenzhen 518060, China
| | - Zhigang Liu
- School of Medicine, Shenzhen University , Shenzhen 518060, China
| | - Junmin Quan
- Key Laboratory of Structural Biology, School of Chemical Biology & Biotechnology, Peking University, Shenzhen Graduate School , Shenzhen 518055, China
| | - Xianzhang Bu
- School of Pharmaceutical Science, Sun Yat-sen University , Guangzhou, 510006, China
| | - Haiqiang Wu
- Department of Pharmacy, School of Medicine, Shenzhen University , Shenzhen 518060, China.,College of Life Sciences and Oceanography, Shenzhen University , Shenzhen 518060, China.,Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, California 90095, United States
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Alzheimer's disease drug development pipeline: 2017. ALZHEIMERS & DEMENTIA-TRANSLATIONAL RESEARCH & CLINICAL INTERVENTIONS 2017; 3:367-384. [PMID: 29067343 PMCID: PMC5651419 DOI: 10.1016/j.trci.2017.05.002] [Citation(s) in RCA: 272] [Impact Index Per Article: 38.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
INTRODUCTION There is an urgent need to develop new treatments for Alzheimer's disease (AD) and to understand the drug development process for new AD therapies. METHODS We assessed the agents in the AD pipeline as documented in clinicaltrials.gov for phase I, phase II, and phase III, accessed 1/5/2017. RESULTS There are 105 agents in the AD treatment development pipeline, of which 25 agents are in 29 trials in phase I, 52 agents are in 68 trials in phase II, and 28 agents are in 42 trials in phase III. Seventy percent of drugs in the AD pipeline are disease-modifying therapies (DMTs). Fourteen percent are symptomatic cognitive enhancers, and 13% are symptomatic agents addressing neuropsychiatric and behavioral changes (2% have undisclosed mechanisms). Most trials are sponsored by the biopharmaceutical industry. Trials include patients with preclinical AD (cognitively normal with biomarker evidence of AD), prodromal AD (mild cognitive symptoms and biomarker evidence of AD), and AD dementia. Biomarkers are included in many drug development programs particularly those for DMTs. Thirteen of 46 phase II DMT trials have amyloid imaging as an entry criterion, and 10 of 28 phase III trials incorporate amyloid imaging for diagnosis and entry. A large number of participants are needed for AD clinical trials; in total, 54,073 participants are required for trials spanning preclinical AD to AD dementia. When compared with the 2016 pipeline, there are eight new agents in phase I, 16 in phase II, and five in phase III. DISCUSSION The AD drug development pipeline has 105 agents divided among phase I, phase II, and phase III. The trials include a wide range of clinical trial populations, many mechanisms of action, and require a substantial number of clinical trial participants. Biomarkers are increasingly used in patient identification and as outcome measures, particularly in trials of DMTs.
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Metabolic Syndrome and the Cellular Phase of Alzheimer's Disease. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2017; 146:243-258. [DOI: 10.1016/bs.pmbts.2016.12.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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