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Wang D, Wang G, Wang X, Ren Z, Jia C. Native Mass Spectrometry-Centric Approaches Revealed That Neuropeptides Frequently Interact with Amyloid-β. ACS Chem Neurosci 2024. [PMID: 39066700 DOI: 10.1021/acschemneuro.4c00075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2024] Open
Abstract
Amyloid-β (Aβ) aggregates are recognized as initiators of Alzheimer's disease, and their interaction with the nervous system contributes to the progression of neurodegeneration. Herein, we investigated the frequency at which neuropeptides interact with Aβ and affect the aggregation kinetics and cytotoxicity of Aβ. To this end, we established a native mass spectrometry (MS)-centric workflow for screening Aβ-interacting neuropeptides, and six out of 12 neuropeptides formed noncovalent complexes with Aβ species in the MS gas phase. Thioflavin-T fluorescence assays and gel separation indicated that leptin and cerebellin decreased Aβ aggregation, whereas kisspeptin increased this process. In addition, leptin and cerebellin attenuated Aβ-induced cytotoxicity, which was independent of the influence of metal ions. Leptin can chelate copper from copper-bound Aβ species, reducing the cytotoxicity caused by the aggregation of Aβ and metal ion complexes. Overall, our study demonstrated that neuropeptides frequently interact with Aβ and revealed that leptin and cerebellin are potential inhibitors of Aβ aggregation, providing great insight into understanding the molecular mechanism of Aβ interacting with the nervous system and facilitating drug development.
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Affiliation(s)
- Danyang Wang
- Department of Anatomy, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, China
- Beijing Proteome Research Center, State Key Laboratory of Medical Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences-Beijing, Beijing 102206, China
| | - Guibin Wang
- Beijing Proteome Research Center, State Key Laboratory of Medical Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences-Beijing, Beijing 102206, China
| | - Xiankun Wang
- Beijing Proteome Research Center, State Key Laboratory of Medical Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences-Beijing, Beijing 102206, China
| | - Zhenhua Ren
- Department of Anatomy, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, China
| | - Chenxi Jia
- Department of Anatomy, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, China
- Beijing Proteome Research Center, State Key Laboratory of Medical Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences-Beijing, Beijing 102206, China
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2
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Schafer RM, Giancotti LA, Davis DJ, Larrea IG, Farr SA, Salvemini D. Behavioral characterization of G-protein-coupled receptor 160 knockout mice. Pain 2024; 165:1361-1371. [PMID: 38198232 PMCID: PMC11090760 DOI: 10.1097/j.pain.0000000000003136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 09/23/2023] [Indexed: 01/12/2024]
Abstract
ABSTRACT Neuropathic pain is a devastating condition where current therapeutics offer little to no pain relief. Novel nonnarcotic therapeutic targets are needed to address this growing medical problem. Our work identified the G-protein-coupled receptor 160 (GPR160) as a potential target for therapeutic intervention. However, the lack of small-molecule ligands for GPR160 hampers our understanding of its role in health and disease. To address this void, we generated a global Gpr160 knockout (KO) mouse using CRISPR-Cas9 genome editing technology to validate the contributions of GPR160 in nociceptive behaviors in mice. Gpr160 KO mice are healthy and fertile, with no observable physical abnormalities. Gpr160 KO mice fail to develop behavioral hypersensitivities in a model of neuropathic pain caused by constriction of the sciatic nerve. On the other hand, responses of Gpr160 KO mice in the hot-plate and tail-flick assays are not affected. We recently deorphanized GPR160 and identified cocaine- and amphetamine-regulated transcript peptide (CARTp) as a potential ligand. Using Gpr160 KO mice, we now report that the development of behavioral hypersensitivities after intrathecal or intraplantar injections of CARTp are dependent on GPR160. Cocaine- and amphetamine-regulated transcript peptide plays a role in various affective behaviors, such as anxiety, depression, and cognition. There are no differences in learning, memory, and anxiety between Gpr160 KO mice and their age-matched and sex-matched control floxed mice. Results from these studies support the pronociceptive roles of CARTp/GPR160 and GPR160 as a potential therapeutic target for treatment of neuropathic pain.
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Affiliation(s)
- Rachel M Schafer
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
| | - Luigino A Giancotti
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
| | - Daniel J Davis
- Animal Modeling Core, University of Missouri, Columbia, Missouri, USA
| | - Ivonne G Larrea
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
| | - Susan A Farr
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
- Department of Internal Medicine-Geriatrics, Saint Louis School of Medicine, St. Louis, MO, USA
- VA Medical Center, St Louis. MO 63106, USA
| | - Daniela Salvemini
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
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3
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Strnadová V, Pačesová A, Charvát V, Šmotková Z, Železná B, Kuneš J, Maletínská L. Anorexigenic neuropeptides as anti-obesity and neuroprotective agents: exploring the neuroprotective effects of anorexigenic neuropeptides. Biosci Rep 2024; 44:BSR20231385. [PMID: 38577975 PMCID: PMC11043025 DOI: 10.1042/bsr20231385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/26/2024] [Accepted: 04/05/2024] [Indexed: 04/06/2024] Open
Abstract
Since 1975, the incidence of obesity has increased to epidemic proportions, and the number of patients with obesity has quadrupled. Obesity is a major risk factor for developing other serious diseases, such as type 2 diabetes mellitus, hypertension, and cardiovascular diseases. Recent epidemiologic studies have defined obesity as a risk factor for the development of neurodegenerative diseases, such as Alzheimer's disease (AD) and other types of dementia. Despite all these serious comorbidities associated with obesity, there is still a lack of effective antiobesity treatment. Promising candidates for the treatment of obesity are anorexigenic neuropeptides, which are peptides produced by neurons in brain areas implicated in food intake regulation, such as the hypothalamus or the brainstem. These peptides efficiently reduce food intake and body weight. Moreover, because of the proven interconnection between obesity and the risk of developing AD, the potential neuroprotective effects of these two agents in animal models of neurodegeneration have been examined. The objective of this review was to explore anorexigenic neuropeptides produced and acting within the brain, emphasizing their potential not only for the treatment of obesity but also for the treatment of neurodegenerative disorders.
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Affiliation(s)
- Veronika Strnadová
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Andrea Pačesová
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Vilém Charvát
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Zuzana Šmotková
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Blanka Železná
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Jaroslav Kuneš
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
- Department of Biochemistry and Molecular Biology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic
| | - Lenka Maletínská
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
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4
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Clare K, Park K, Pan Y, Lejuez CW, Volkow ND, Du C. Neurovascular effects of cocaine: relevance to addiction. Front Pharmacol 2024; 15:1357422. [PMID: 38455961 PMCID: PMC10917943 DOI: 10.3389/fphar.2024.1357422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 01/22/2024] [Indexed: 03/09/2024] Open
Abstract
Cocaine is a highly addictive drug, and its use is associated with adverse medical consequences such as cerebrovascular accidents that result in debilitating neurological complications. Indeed, brain imaging studies have reported severe reductions in cerebral blood flow (CBF) in cocaine misusers when compared to the brains of healthy non-drug using controls. Such CBF deficits are likely to disrupt neuro-vascular interaction and contribute to changes in brain function. This review aims to provide an overview of cocaine-induced CBF changes and its implication to brain function and to cocaine addiction, including its effects on tissue metabolism and neuronal activity. Finally, we discuss implications for future research, including targeted pharmacological interventions and neuromodulation to limit cocaine use and mitigate the negative impacts.
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Affiliation(s)
- Kevin Clare
- New York Medical College, Valhalla, NY, United States
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, United States
| | - Kicheon Park
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, United States
| | - Yingtian Pan
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, United States
| | - Carl W. Lejuez
- Department of Psychology, Stony Brook University, Stony Brook, NY, United States
| | - Nora D. Volkow
- National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD, United States
| | - Congwu Du
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, NY, United States
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5
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Weaver C, Antony M, Fite J, Murugan P, Nelson AC, Manivel JC. Cocaine and amphetamine regulated transcript (CART): a newly characterized neuropeptide in human prostate. Biotech Histochem 2023; 98:508-522. [PMID: 37615074 DOI: 10.1080/10520295.2023.2245328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023] Open
Abstract
Cocaine and amphetamine regulated transcript (CART) is a somatostatin-like polypeptide. CART has been localized in the CNS, hypothalamo-pituitary-adrenocortical (HPA) axis, pancreatic islets and enteric nervous system. We investigated the cellular localization of CART in normal human prostate, benign prostatic hyperplasia, prostatic intraepithelial neoplasia and acinar adenocarcinoma. CART was assessed using immunohistochemistry (IHC) and in situ hybridization (ISH), and its gene expression was identified by RTqPCR. We found cellular expression of CART in both normal prostatic luminal secretory epithelial cells neuroendocrine cells (NEC) of both ducts and acini. The cellular appearance indicated a cycle of neuropeptide synthesis and secretion as validated by ISH/IHC concordance. RTqPCR analysis also validated the immunohistochemical data and gene expression, which both indicated low to moderate expression in prostatic tissues. CART expression also was increased in both neuroendocrine and glandular epithelial cell populations from samples of benign prostatic hyperplasia as validated by IHC, ISH and RTqPCR. CART expression was markedly diminished and, in some cases, entirely absent in tissues of prostatic intraepithelial neoplasia and adenocarcinoma. Owing to loss of CART expression in adenocarcinoma and its increase in benign prostatic hyperplasia, CART may prove to be an important prostate marker.
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Affiliation(s)
- Cyprian Weaver
- Department of Medicine, University of Minnesota, Minneapolis, MN, USA
- Lillihei Heart Institute, University of Minnesota, Minneapolis, MN, USA
| | - Marie Antony
- Department of Medicine, Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN, USA
| | - Jack Fite
- Lillihei Heart Institute, University of Minnesota, Minneapolis, MN, USA
| | - Paari Murugan
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA
| | - Andrew C Nelson
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA
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6
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Gutierrez-Merino C. Brain Hydrophobic Peptides Antagonists of Neurotoxic Amyloid β Peptide Monomers/Oligomers-Protein Interactions. Int J Mol Sci 2023; 24:13846. [PMID: 37762148 PMCID: PMC10531495 DOI: 10.3390/ijms241813846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/02/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
Amyloid β (Aβ) oligomers have been linked to Alzheimer's disease (AD) pathogenesis and are the main neurotoxic forms of Aβ. This review focuses on the following: (i) the Aβ(1-42):calmodulin interface as a model for the design of antagonist Aβ peptides and its limitations; (ii) proteolytic degradation as the major source of highly hydrophobic peptides in brain cells; and (iii) brain peptides that have been experimentally demonstrated to bind to Aβ monomers or oligomers, Aβ fibrils, or Aβ plaques. It is highlighted that the hydrophobic amino acid residues of the COOH-terminal segment of Aβ(1-42) play a key role in its interaction with intracellular protein partners linked to its neurotoxicity. The major source of highly hydrophobic endogenous peptides of 8-10 amino acids in neurons is the proteasome activity. Many canonical antigen peptides bound to the major histocompatibility complex class 1 are of this type. These highly hydrophobic peptides bind to Aβ and are likely to be efficient antagonists of the binding of Aβ monomers/oligomers concentrations in the nanomolar range with intracellular proteins. Also, their complexation with Aβ will protect them against endopeptidases, suggesting a putative chaperon-like physiological function for Aβ that has been overlooked until now. Remarkably, the hydrophobic amino acid residues of Aβ responsible for the binding of several neuropeptides partially overlap with those playing a key role in its interaction with intracellular protein partners that mediates its neurotoxicity. Therefore, these latter neuropeptides are also potential candidates to antagonize Aβ peptides binding to target proteins. In conclusion, the analysis performed in this review points out that hydrophobic endogenous brain neuropeptides could be valuable biomarkers to evaluate the risk of the onset of sporadic AD, as well as for the prognosis of AD.
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Affiliation(s)
- Carlos Gutierrez-Merino
- Instituto de Biomarcadores de Patologías Moleculares, Universidad de Extremadura, 06006 Badajoz, Spain
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7
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Alzheimer's Disease and Impaired Bone Microarchitecture, Regeneration and Potential Genetic Links. Life (Basel) 2023; 13:life13020373. [PMID: 36836731 PMCID: PMC9963274 DOI: 10.3390/life13020373] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/08/2023] [Accepted: 01/16/2023] [Indexed: 02/03/2023] Open
Abstract
Alzheimer's Disease (AD) and osteoporosis are both age-related degenerative diseases. Many studies indicate that these two diseases share common pathogenesis mechanisms. In this review, the osteoporotic phenotype of AD mouse models was discussed, and shared mechanisms such as hormonal imbalance, genetic factors, similar signaling pathways and impaired neurotransmitters were identified. Moreover, the review provides recent data associated with these two diseases. Furthermore, potential therapeutic approaches targeting both diseases were discussed. Thus, we proposed that preventing bone loss should be one of the most important treatment goals in patients with AD; treatment targeting brain disorders is also beneficial for osteoporosis.
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8
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You M, Yuan P, Li L, Xu H. HIF-1 signalling pathway was identified as a potential new pathway for Icariin's treatment against Alzheimer's disease based on preclinical evidence and bioinformatics. Front Pharmacol 2022; 13:1066819. [PMID: 36532735 PMCID: PMC9751333 DOI: 10.3389/fphar.2022.1066819] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 11/18/2022] [Indexed: 10/05/2023] Open
Abstract
Aim: Alzheimer's disease (AD) is a neurodegenerative condition that is characterized by the gradual loss of memory and cognitive function. Icariin, which is a natural chemical isolated from Epimedii herba, has been shown to protect against AD. This research examined the potential mechanisms of Icariin's treatment against AD via a comprehensive review of relevant preclinical studies coupled with network pharmacology. Methods: The PubMed, Web of Science, CNKI, WANFANG, and VIP databases were used to identify the relevant studies. The pharmacological characteristics of Icariin were determined using the SwissADME and TCMSP databases. The overlapping targets of Icariin and AD were then utilized to conduct disease oncology (DO) analysis to identify possible hub targets of Icariin in the treatment of AD. The hub targets were then used for Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses, and the interactions of the targets and Icariin were assessed via molecular docking and molecular dynamics simulation (MDS). Results: According to the literature review, Icariin alleviates cognitive impairment by regulating the expression of Aβ1-42, Aβ1-40, BACE1, tau, hyperphosphorylated tau, and inflammatory mediators. DO analysis revealed 35 AD-related hub targets, and the HIF-1 signalling pathway was ranked first according to the KEGG pathway analysis. Icariin effectively docked with the 35 hub targets and HIF-1α, and the dynamic binding of the HIF-1-Icariin complex within 100 ns indicated that Icariin contributed to the stability of HIF-1α. Conclusion: In conclusion, our research used a literature review and network pharmacology methods to identify the HIF-1 signalling pathway as a potential pathway for Icariin's treatment against AD.
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Affiliation(s)
| | | | | | - Hongbei Xu
- Department of Neurology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
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9
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Jin M, Cai SQ. Mechanisms Underlying Brain Aging Under Normal and Pathological Conditions. Neurosci Bull 2022; 39:303-314. [PMID: 36437436 PMCID: PMC9905409 DOI: 10.1007/s12264-022-00969-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 06/17/2022] [Indexed: 11/28/2022] Open
Abstract
Aging is a major risk factor for many human diseases, including cognitive impairment, which affects a large population of the elderly. In the past few decades, our understanding of the molecular and cellular mechanisms underlying the changes associated with aging and age-related diseases has expanded greatly, shedding light on the potential role of these changes in cognitive impairment. In this article, we review recent advances in understanding of the mechanisms underlying brain aging under normal and pathological conditions, compare their similarities and differences, discuss the causative and adaptive mechanisms of brain aging, and finally attempt to find some rules to guide us on how to promote healthy aging and prevent age-related diseases.
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Affiliation(s)
- Menglong Jin
- Institute of Neuroscience and State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031 China ,University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Shi-Qing Cai
- Institute of Neuroscience and State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, 200031, China.
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10
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Identification and Experimental Validation of Marker Genes between Diabetes and Alzheimer’s Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:8122532. [PMID: 35996379 PMCID: PMC9391608 DOI: 10.1155/2022/8122532] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/15/2022] [Accepted: 08/01/2022] [Indexed: 11/21/2022]
Abstract
Currently, Alzheimer's disease (AD) and type 2 diabetes mellitus (T2DM) are widely prevalent in the elderly population, and accumulating evidence implies a strong link between them. For example, patients with T2DM have a higher risk of developing neurocognitive disorders, including AD, but the exact mechanisms are still unclear. This time, by combining bioinformatics analysis and in vivo experimental validation, we attempted to find a common biological link between AD and T2DM. We firstly downloaded the gene expression profiling (AD: GSE122063; T2DM: GSE161355) derived from the temporal cortex. To find the associations, differentially expressed genes (DEGs) of the two datasets were filtered and intersected. Based on them, enrichment analysis was carried out, and the least absolute shrinkage and selection operator (LASSO) logistic regression and support vector machine-recursive feature elimination (SVM-RFE) algorithms were used to identify the specific genes. After verifying in the external dataset and in the samples from the AD and type 2 diabetes animals, the shared targets of the two diseases were finally determined. Based on them, the ceRNA networks were constructed. Besides, the logistic regression and single-sample gene set enrichment analysis (ssGSEA) were performed. As a result, 62 DEGs were totally identified between AD and T2DM, and the enrichment analysis indicated that they were much related to the function of synaptic vesicle and MAPK signaling pathway. Based on the evidence from external dataset and RT-qPCR, CARTPT, EPHA5, and SERPINA3 were identified as the marker genes in both diseases, and their clinical significance and biological functions were further analyzed. In conclusion, discovering and exploring the marker genes that are dysregulated in both 2 diseases could help us better comprehend the intrinsic relationship between T2DM and AD, which may inspire us to develop new strategies for facing the dilemmas of clinical or basic research in cognitive dysfunction.
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11
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Jiang H, Niu F, Zheng Y, Xu Y. CART mitigates oxidative stress and DNA damage in memory deficits of APP/PS1 mice via upregulating β‑amyloid metabolism‑associated enzymes. Mol Med Rep 2021; 23:280. [PMID: 33604684 PMCID: PMC7905330 DOI: 10.3892/mmr.2021.11919] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 12/17/2020] [Indexed: 12/29/2022] Open
Abstract
Alzheimer's disease (AD) is the most common form of dementia that is primarily characterized by progressive cognitive deficits. The toxicity of amyloid β-protein (Aβ) serves an important role in the progression of AD, resulting in neuronal loss via a number of possible mechanisms, including oxidative stress, mitochondrial dysfunction, energy depletion, apoptosis and neuroinflammation. Previous studies have reported that cocaine amphetamine regulated transcript (CART) treatment improves memory and synaptic structure in APP/PS1 mice. Therefore, the present study aimed to investigate whether CART served a protective role against memory deficits in AD. APP/PS1 mice were treated with CART or PBS. Spatial memory was assessed using the Morris water maze. Oxidative stress and DNA damage were compared among wild-type, APP/PS1 and CART-treated APP/PS1 mice. The mRNA and protein expression levels of Aβ metabolism-associated enzymes, including neprilysin (NEP), insulin-degrading enzyme (IDE), receptor for advanced glycation end products (RAGE) and low-density lipoprotein receptor-related protein 1 (LRP-1), in the hippocampus were measured via reverse transcription-quantitative PCR and western blotting, respectively. CART improved the memory impairment of APP/PS1 mice by reducing oxidative stress, inhibiting DNA damage and protecting against mitochondrial dysfunction in the cerebral cortex and hippocampus. CART also reduced cell senescence and oxidative stress in Aβ1-42-exposed primary cortical neurons in APP/PS1 mice. Moreover, CART promoted Aβ degradation via modulating Aβ metabolism-associated enzymes, including IDE, NEP, LRP-1 and RAGE. Collectively, the present study indicated that CART improved the learning and memory capacity of APP/PS mice, thus may have potential to serve as a novel therapeutic agent for AD.
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Affiliation(s)
- Hui Jiang
- Department of Neurology, Affiliated Drum Tower Clinical Medical College of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Fengnan Niu
- Department of Neurology, Affiliated Drum Tower Clinical Medical College of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Yan Zheng
- Departnment of Neurology, Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing, Jiangsu 210000, P.R. China
| | - Yun Xu
- Department of Neurology, Affiliated Drum Tower Clinical Medical College of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
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12
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Ranneva SV, Maksimov VF, Korostyshevskaja IM, Lipina TV. Lack of synaptic protein, calsyntenin‐2, impairs morphology of synaptic complexes in mice. Synapse 2019; 74:e22132. [DOI: 10.1002/syn.22132] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 09/05/2019] [Accepted: 09/11/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Svetlana V. Ranneva
- Federal State Budgetary Scientific Institution Scientific Research Institute of Physiology and Basic Medicine Novosibirsk Russia
| | - Valeriy F. Maksimov
- Federal State Budgetary Scientific Institution Scientific Research Institute of Physiology and Basic Medicine Novosibirsk Russia
| | - Irina M. Korostyshevskaja
- Federal State Budgetary Scientific Institution Scientific Research Institute of Physiology and Basic Medicine Novosibirsk Russia
| | - Tatiana V. Lipina
- Federal State Budgetary Scientific Institution Scientific Research Institute of Physiology and Basic Medicine Novosibirsk Russia
- Department of Medicine and Psychology Novosibirsk State University Novosibirsk Russia
- Department of Pharmacology and Toxicology University of Toronto Toronto Ontario Canada
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13
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Petrella C, Di Certo MG, Barbato C, Gabanella F, Ralli M, Greco A, Possenti R, Severini C. Neuropeptides in Alzheimer’s Disease: An Update. Curr Alzheimer Res 2019; 16:544-558. [DOI: 10.2174/1567205016666190503152555] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/19/2019] [Accepted: 04/30/2019] [Indexed: 12/19/2022]
Abstract
Neuropeptides are small proteins broadly expressed throughout the central nervous system, which act as neurotransmitters, neuromodulators and neuroregulators. Growing evidence has demonstrated the involvement of many neuropeptides in both neurophysiological functions and neuropathological conditions, among which is Alzheimer’s disease (AD). The role exerted by neuropeptides in AD is endorsed by the evidence that they are mainly neuroprotective and widely distributed in brain areas responsible for learning and memory processes. Confirming this point, it has been demonstrated that numerous neuropeptide-containing neurons are pathologically altered in brain areas of both AD patients and AD animal models. Furthermore, the levels of various neuropeptides have been found altered in both Cerebrospinal Fluid (CSF) and blood of AD patients, getting insights into their potential role in the pathophysiology of AD and offering the possibility to identify novel additional biomarkers for this pathology. We summarized the available information about brain distribution, neuroprotective and cognitive functions of some neuropeptides involved in AD. The main focus of the current review was directed towards the description of clinical data reporting alterations in neuropeptides content in both AD patients and AD pre-clinical animal models. In particular, we explored the involvement in the AD of Thyrotropin-Releasing Hormone (TRH), Cocaine- and Amphetamine-Regulated Transcript (CART), Cholecystokinin (CCK), bradykinin and chromogranin/secretogranin family, discussing their potential role as a biomarker or therapeutic target, leaving the dissertation of other neuropeptides to previous reviews.
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Affiliation(s)
- Carla Petrella
- Department of Sense Organs, CNR, Institute of Cell Biology and Neurobiology, University Sapienza of Rome, Viale del Policlinico 155, 00161 Rome, Italy
| | - Maria Grazia Di Certo
- Department of Sense Organs, CNR, Institute of Cell Biology and Neurobiology, University Sapienza of Rome, Viale del Policlinico 155, 00161 Rome, Italy
| | - Christian Barbato
- Department of Sense Organs, CNR, Institute of Cell Biology and Neurobiology, University Sapienza of Rome, Viale del Policlinico 155, 00161 Rome, Italy
| | - Francesca Gabanella
- Department of Sense Organs, CNR, Institute of Cell Biology and Neurobiology, University Sapienza of Rome, Viale del Policlinico 155, 00161 Rome, Italy
| | - Massimo Ralli
- Department of Sense Organs, University Sapienza of Rome, Viale del Policlinico 155, 00161 Rome, Italy
| | - Antonio Greco
- Department of Sense Organs, University Sapienza of Rome, Viale del Policlinico 155, 00161 Rome, Italy
| | - Roberta Possenti
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Cinzia Severini
- Department of Sense Organs, CNR, Institute of Cell Biology and Neurobiology, University Sapienza of Rome, Viale del Policlinico 155, 00161 Rome, Italy
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14
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Sagarkar S, Balasubramanian N, Mishra S, Choudhary AG, Kokare DM, Sakharkar AJ. Repeated mild traumatic brain injury causes persistent changes in histone deacetylase function in hippocampus: Implications in learning and memory deficits in rats. Brain Res 2019; 1711:183-192. [DOI: 10.1016/j.brainres.2019.01.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 01/16/2019] [Accepted: 01/17/2019] [Indexed: 12/25/2022]
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15
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Maternal ethanol exposure reshapes CART system in the rat brain: Correlation with development of anxiety, depression and memory deficits. Neuroscience 2019; 406:126-139. [DOI: 10.1016/j.neuroscience.2019.02.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/06/2019] [Accepted: 02/07/2019] [Indexed: 02/07/2023]
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16
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Maletínská L, Popelová A, Železná B, Bencze M, Kuneš J. The impact of anorexigenic peptides in experimental models of Alzheimer's disease pathology. J Endocrinol 2019; 240:R47-R72. [PMID: 30475219 DOI: 10.1530/joe-18-0532] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 11/20/2018] [Indexed: 12/16/2022]
Abstract
Alzheimer's disease (AD) is the most prevalent neurodegenerative disorder in the elderly population. Numerous epidemiological and experimental studies have demonstrated that patients who suffer from obesity or type 2 diabetes mellitus have a higher risk of cognitive dysfunction and AD. Several recent studies demonstrated that food intake-lowering (anorexigenic) peptides have the potential to improve metabolic disorders and that they may also potentially be useful in the treatment of neurodegenerative diseases. In this review, the neuroprotective effects of anorexigenic peptides of both peripheral and central origins are discussed. Moreover, the role of leptin as a key modulator of energy homeostasis is discussed in relation to its interaction with anorexigenic peptides and their analogs in AD-like pathology. Although there is no perfect experimental model of human AD pathology, animal studies have already proven that anorexigenic peptides exhibit neuroprotective properties. This phenomenon is extremely important for the potential development of new drugs in view of the aging of the human population and of the significantly increasing incidence of AD.
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Affiliation(s)
- Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry AS CR, Prague, Czech Republic
| | - Andrea Popelová
- Institute of Organic Chemistry and Biochemistry AS CR, Prague, Czech Republic
| | - Blanka Železná
- Institute of Organic Chemistry and Biochemistry AS CR, Prague, Czech Republic
| | - Michal Bencze
- Institute of Organic Chemistry and Biochemistry AS CR, Prague, Czech Republic
- Institute of Physiology AS CR, Prague, Czech Republic
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and Biochemistry AS CR, Prague, Czech Republic
- Institute of Physiology AS CR, Prague, Czech Republic
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17
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Yu L, Liu Y, Jin Y, Cao X, Chen J, Jin J, Gu Y, Bao X, Ren Z, Xu Y, Zhu X. Lentivirus-Mediated HDAC3 Inhibition Attenuates Oxidative Stress in APPswe/PS1dE9 Mice. J Alzheimers Dis 2019; 61:1411-1424. [PMID: 29376873 DOI: 10.3233/jad-170844] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Amyloid-β (Aβ) induces a burst of oxidative stress and plays a critical role in the pathogenesis of Alzheimer's disease (AD). Our previous results have shown that histone deacetylase 3 (HDAC3) inhibition ameliorates spatial memory deficits and decreases the Aβ burden in the brains of 9-month-old APPswe/PS1dE9 (APP/PS1) mice. In this study, we investigated the role of HDAC3 inhibition in oxidative stress in vivo and in vitro models of AD. HDAC3 was detected mainly in the neurons, and HDAC3 inhibition significantly decreased reactive oxygen species generation and improved primary cortical neuron viability. In addition, HDAC3 inhibition attenuated spatial memory dysfunction in 6-month-old APP/PS1 mice, and decreased the apoptotic rate in the hippocampi as demonstrated by TUNEL staining. HDAC3 inhibition also reduced markers of lipid peroxidation, protein oxidation, and DNA/RNA oxidation in the hippocampi of APP/PS1 mice. Moreover, HDAC3 inhibition inactivated the c-Abl/MST1/YAP signaling pathway in the hippocampi of APP/PS1 mice. In conclusion, our data show that HDAC3 inhibition can attenuate spatial memory deficits and inhibit oxidative stress in APP/PS1 mice; these results indicate a potential strategy for AD treatment.
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Affiliation(s)
- Linjie Yu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Nanjing, Jiangsu Key Laboratory for Molecular Medicine, Nanjing, China
| | - Yi Liu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Nanjing, Jiangsu Key Laboratory for Molecular Medicine, Nanjing, China
| | - Yuexinzi Jin
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.,Nanjing, Jiangsu Key Laboratory for Molecular Medicine, Nanjing, China.,Department of Neurology, Drum Tower Hospital of Nanjing Medical University, Nanjing, China
| | - Xiang Cao
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Nanjing, Jiangsu Key Laboratory for Molecular Medicine, Nanjing, China
| | - Jian Chen
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.,Nanjing, Jiangsu Key Laboratory for Molecular Medicine, Nanjing, China.,Department of Neurology, Drum Tower Hospital of Nanjing Medical University, Nanjing, China
| | - Jiali Jin
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Nanjing, Jiangsu Key Laboratory for Molecular Medicine, Nanjing, China
| | - Yue Gu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Nanjing, Jiangsu Key Laboratory for Molecular Medicine, Nanjing, China
| | - Xinyu Bao
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Nanjing, Jiangsu Key Laboratory for Molecular Medicine, Nanjing, China
| | - Zhuoying Ren
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Nanjing, Jiangsu Key Laboratory for Molecular Medicine, Nanjing, China
| | - Yun Xu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Nanjing, Jiangsu Key Laboratory for Molecular Medicine, Nanjing, China
| | - Xiaolei Zhu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, China.,Nanjing, Jiangsu Key Laboratory for Molecular Medicine, Nanjing, China
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18
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Zhang JH, Yu LJ, Yang H, Hui Z, Jiang S, Chen L, Zhao Y, Wang SL, Liu Y, Xu Y. Huatuo Zaizao pill ameliorates cognitive impairment of APP/PS1 transgenic mice by improving synaptic plasticity and reducing Aβ deposition. Altern Ther Health Med 2018; 18:167. [PMID: 29843688 PMCID: PMC5975403 DOI: 10.1186/s12906-018-2237-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 05/22/2018] [Indexed: 11/10/2022]
Abstract
Background It is well known that Alzheimer’s disease (AD) is a progressive neurodegenerative disease characterized by memory deficits and cognitive decline. Amyloid-β (Aβ) deposition and synaptic dysfunction play important roles in the pathophysiology of Alzheimer’s disease (AD). The Huatuo Zaizao pill (HT) is a Traditional Chinese Medicine (TCM) that has been used clinically for many years in China, mainly for post-stroke rehabilitation and cognitive decline; however, the mechanism of cognitive function is not clear. In this study, we investigated the effect of HT on hippocampal synaptic function, Amyloid-β (Aβ) deposition in APP/PS1 AD transgenic mice. Method Six-month-old APP/PS1 transgenic (Tg) mice were randomly divided into control, HT-treated, and memantine (MEM)-treated groups. Then, these groups were orally administered vehicle (for the control), HT (0.25 g/kg) and MEM (5 mg/kg) respectively for 4 weeks. The Morris water maze, Novel Object Recognition, and Open field tests were used to assess cognitive behavioral changes. We evaluated the effects of HT on neuronal excitability, membrane ion channel activity, and synaptic plasticity in acute hippocampal slices by combining electrophysiological extracellular tests. Synaptic morphology in the hippocampus was investigated by electron microscopy. Western blotting was used to assess synaptic-associated protein and Aβ production and degrading levels. Immunofluorescence staining was used to determine the relative integrated density. Results HT can ameliorate hippocampus-dependent memory deficits and improve synaptic dysfunction by reversing LTP impairment in APP/PS1 transgenic mice. Moreover, HT reduces amyloid plaque deposition by regulating α-secretase and γ-secretase levels. Conclusion HT can improve the learning and memory function of APP/PS1 transgenic mice by improving synaptic function and reducing amyloid plaque deposition. Electronic supplementary material The online version of this article (10.1186/s12906-018-2237-2) contains supplementary material, which is available to authorized users.
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19
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Jin Y, Tang X, Cao X, Yu L, Chen J, Zhao H, Chen Y, Han L, Bao X, Li F, Xu Y. 4-((5-(Tert-butyl)-3-chloro-2-hydroxybenzyl) amino)-2-hydroxybenzoic acid protects against oxygen-glucose deprivation/reperfusion injury. Life Sci 2018; 204:46-54. [PMID: 29723536 DOI: 10.1016/j.lfs.2018.04.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/19/2018] [Accepted: 04/29/2018] [Indexed: 12/11/2022]
Abstract
AIMS Oxidative stress is one of the most important pathological mechanisms which could aggravate ischemic stroke injury. In order to seek for better treatment therapies to alleviate stroke injury, novel chemicals have been synthetized. In the present study, a new compound 4-((5-(tert-butyl)-3-chloro-2-hydroxybenzyl) amino)-2- hydroxybenzoic acid, named LX009, was used to determine whether it could reduce the oxidative stress caused by oxygen-glucose deprivation (OGD)/reperfusion (RP) and exert neuroprotective effect both in mouse Neuro 2A (N2A) neuroblastoma cells and mouse primary cortical neurons. MAIN METHODS OGD/RP was performed as an in vitro model to mimic the pathologic process of ischemic stroke. We explored the anti-apoptosis effect of LX009 through CCK8 assay, calcein acetoxymethylester/propidium iodide (calcein-AM/PI) staining, Annexin V-fluorescein isothiocyanate (FITC)/propidium iodide (PI) apoptosis kit, caspase-3 activity assay. Besides, the anti-oxidative stress effect of the drug was determined by intracellular reactive oxygen species (ROS) detection, nitrite analysis, measurement of mitochondrial membrane potential (MMP), intracellular catalase (CAT) and Mn-superoxide dismutase (Mn-SOD) activity. KEY FINDINGS Our results indicated that LX009 could alleviate OGD/RP-induced cell apoptosis. Furthermore, OGD/RP induced oxidative stress could be reserved by LX009, including measurements of intracellular ROS production, MMP, CAT and Mn-SOD activity. Mechanistically, the phosphorylation level of Akt, as well as the expression of nuclear factor-E2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) were elevated after LX009 treatment. SIGNIFICANCE Our present study indicated that LX009 might have the potential to be an anti-oxidative stress agent in the future.
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Affiliation(s)
- Yuexinzi Jin
- Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, PR China; Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China
| | - Xuelian Tang
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China; Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China
| | - Xiang Cao
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China; Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China
| | - Linjie Yu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China; Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China
| | - Jian Chen
- Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, PR China; Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China
| | - Haoran Zhao
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China; Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China
| | - Yan Chen
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China; Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China
| | - Lijuan Han
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China; Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China
| | - Xinyu Bao
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China; Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China
| | - Fei Li
- Department of Medicinal Chemistry, School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu 211166, PR China
| | - Yun Xu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China; Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu 210008, PR China; Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China.
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20
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Inflammation, insulin signaling and cognitive function in aged APP/PS1 mice. Brain Behav Immun 2018; 70:423-434. [PMID: 29604345 DOI: 10.1016/j.bbi.2018.03.032] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 03/17/2018] [Accepted: 03/26/2018] [Indexed: 02/06/2023] Open
Abstract
Cognitive dysfunction and neuroinflammation are typical in Alzheimer's disease (AD), but are also associated with normal aging, albeit less severely. Insulin resistance in the brain has been demonstrated in AD patients and is thought to be involved in AD pathophysiology. Using 15-18 month-old APP/PS1 mice, this study measured peripheral and central insulin signaling and sensitivity, inflammatory markers in brain and plasma and oxidative stress and synapse density in the brain. Novel object recognition, Morris water maze and reversal water maze tasks were performed to assess cognitive function in aged APP/PS1 mice and wild type littermates. Glucose tolerance and insulin sensitivity were similar in APP/PS1 mice and wild type controls, however IRS-1 pSer616 was increased in cortex and dentate gyrus of APP/PS1 mice. Recognition and spatial memory was impaired in both APP/PS1 and wild type mice, however learning impairments were apparent in APP/PS1 mice. Expression of GLP-1 receptor, ERK2, IKKβ, mTOR, PKCθ, NF-κB1 and TLR4 was similar between aged APP/PS1 mice and age-matched wild types. Compared to age-matched wild type mice, IFNγ and IL-4 were increased in brains of APP/PS1 mice. These results suggest that normal aging may be associated with enhanced neuroinflammation, oxidative stress, and cognitive decline, however distinctions are apparent in the brain of APP/PS1 mice in terms of inflammation and insulin signaling and in certain cognitive domains. Demarcation of pathological events that distinguish AD from normal aging will allow for improvements in diagnostic tools and the development of more effective therapeutics.
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21
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Yu L, Liu Y, Yang H, Zhu X, Cao X, Gao J, Zhao H, Xu Y. PSD-93 Attenuates Amyloid-β-Mediated Cognitive Dysfunction by Promoting the Catabolism of Amyloid-β. J Alzheimers Dis 2018; 59:913-927. [PMID: 28697571 DOI: 10.3233/jad-170320] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Amyloid-β (Aβ) is a key neuropathological hallmark of Alzheimer's disease (AD). Postsynaptic density protein 93 (PSD-93) is a key scaffolding protein enriched at postsynaptic sites. The aim of the present study was to examine whether PSD-93 overexpression could alleviate Aβ-induced cognitive dysfunction in APPswe/PS1dE9 (APP/PS1) mice by reducing Aβ levels in the brain. The level of PSD-93 was significantly decreased in the hippocampus of 6-month-old APP/PS1 mice compared with that in wild-type mice. Following lentivirus-mediated PSD-93 overexpression, cognitive function, synaptic function, and amyloid burden were investigated. The open field test, Morris water maze test, and fear condition test revealed that PSD-93 overexpression ameliorated spatial memory deficits in APP/PS1 mice. The facilitation of long-term potentiation induction was observed in APP/PS1 mice after PSD-93 overexpression. The expression of somatostatin receptor 4 (SSTR4) and neprilysin was increased, while the amyloid plaque load and Aβ levels were decreased in the brains of APP/PS1 mice. Moreover, PSD-93 interacted with SSTR4 and affected the level of SSTR4 on cell membrane, which was associated with the ubiquitination. Together, these findings suggest that PSD-93 attenuates spatial memory deficits and decreases amyloid levels in APP/PS1 mice, which might be associated with Aβ catabolism, and overexpression of PSD-93 might be a potential therapy for AD.
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Affiliation(s)
- Linjie Yu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, P. R. China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, P. R. China
| | - Yi Liu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, P. R. China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, P. R. China
| | - Hui Yang
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, P. R. China.,Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, P. R. China
| | - Xiaolei Zhu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, P. R. China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, P. R. China.,Jiangsu Key Laboratory for Molecular Medicine, Nanjing University, Nanjing, P. R. China
| | - Xiang Cao
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, P. R. China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, P. R. China.,Jiangsu Key Laboratory for Molecular Medicine, Nanjing University, Nanjing, P. R. China
| | - Jun Gao
- Department of Neurobiology, Key Laboratory of Human Functional Genomics of Jiangsu, Nanjing Medical University, Nanjing, P. R. China
| | - Hui Zhao
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, P. R. China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, P. R. China.,Jiangsu Key Laboratory for Molecular Medicine, Nanjing University, Nanjing, P. R. China
| | - Yun Xu
- Department of Neurology, Drum Tower Hospital, Medical School of Nanjing University, Nanjing, P. R. China.,The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, P. R. China.,Jiangsu Key Laboratory for Molecular Medicine, Nanjing University, Nanjing, P. R. China
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22
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Su D, Liu H, Liu T, Zhang X, Yang W, Song Y, Liu J, Wu Y, Chang L. Dynamic SAP102 expression in the hippocampal subregions of rats and APP/PS1 mice of various ages. J Anat 2018; 232:987-996. [PMID: 29574717 DOI: 10.1111/joa.12807] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2018] [Indexed: 11/27/2022] Open
Abstract
The hippocampus is a structurally and functionally complex brain area that plays important and diverse roles in higher brain functions, such as learning and memory, and mounting evidence indicates that different hippocampal subregions play distinctive roles. The hippocampus is also one of the first regions in the brain to suffer damage in Alzheimer's disease (AD). Synaptic dysfunction in the hippocampus, rather than neuronal loss per se, is paralleled by behavioural and functional deficits in AD. The membrane-associated guanylate kinase (MAGUK) family of proteins, including SAP102, PSD-95, PSD-93 and SAP97, have long been recognized as essential components of the postsynaptic density (PSD) at excitatory synapses. Hippocampal spines are the predominant synaptic transmission sites of excitatory glutamatergic synapses. During postnatal brain development, individual MAGUK members show distinct expression patterns. Although SAP102 has been confirmed as the dominant scaffold protein in neonatal synapses, its expression profiles in adult and ageing rodent hippocampi are discrepant. Furthermore, in AD brains, significantly reduced SAP102 protein levels have been found, suggesting that SAP102 may be related to AD progression; however, the precise mechanism underlying this result remains unclear. Herein, we observed distinct SAP102 expression profiles in the hippocampal CA1, CA3 and DG subregions of rats and APPswe/PS1dE9 (APP/PS1) mice at various ages using immunofluorescence. In Wistar rats, SAP102 was not only highly expressed in the hippocampal subregions of neonatal rats but also maintained relatively high expression levels in adult hippocampi and displayed no obvious decreases in the CA1 and DG subregions of aged rats. Surprisingly, we observed abnormally high SAP102 expression levels in the CA1 stratum moleculare and CA3 stratum polymorphum subregions of 2-month-old APP/PS1 mice, but low SAP102 levels in the DG and CA3 subregions of 7-month-old APP/PS1 mice, reflecting the subregion-specific reactivity and vulnerability of AD mouse models in different disease stages. Our findings provide fundamental data to support the functional differences of SAP102 in different hippocampal subregions during postnatal periods and may serve as the basis for additional functional studies on SAP102 in normal physiological conditions and different stages of AD.
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Affiliation(s)
- Dongning Su
- Department of Neurology, Centre for Neurodegenerative Disease, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Hui Liu
- Department of Paediatric Rheumatology and Immunology, Beijing Children's Hospital, National Centre for Children's Health, Capital Medical University, Beijing, China
| | - Tianrong Liu
- Department of Breast Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Xin Zhang
- Department of Urology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Wei Yang
- Department of Paediatric Neurosurgery, Beijing Children's Hospital, National Centre for Children's Health, Capital Medical University, Beijing, China
| | - Yizhi Song
- Department of Anatomy, School of Basic Medical Sciences, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Jinping Liu
- School of Medicine, Tsinghua University, Beijing, China
| | - Yan Wu
- Department of Anatomy, School of Basic Medical Sciences, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Lirong Chang
- Department of Anatomy, School of Basic Medical Sciences, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
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23
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Ibrahim NF, Yanagisawa D, Durani LW, Hamezah HS, Damanhuri HA, Wan Ngah WZ, Tsuji M, Kiuchi Y, Ono K, Tooyama I. Tocotrienol-Rich Fraction Modulates Amyloid Pathology and Improves Cognitive Function in AβPP/PS1 Mice. J Alzheimers Dis 2018; 55:597-612. [PMID: 27716672 PMCID: PMC5147513 DOI: 10.3233/jad-160685] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Alzheimer’s disease (AD) is the most common cause of dementia. The cardinal neuropathological characteristic of AD is the accumulation of amyloid-β (Aβ) into extracellular plaques that ultimately disrupt neuronal function and lead to neurodegeneration. One possible therapeutic strategy therefore is to prevent Aβ aggregation. Previous studies have suggested that vitamin E analogs slow AD progression in humans. In the present study, we investigated the effects of the tocotrienol-rich fraction (TRF), a mixture of vitamin E analogs from palm oil, on amyloid pathology in vitro and in vivo. TRF treatment dose-dependently inhibited the formation of Aβ fibrils and Aβ oligomers in vitro. Moreover, daily TRF supplementation to AβPPswe/PS1dE9 double transgenic mice for 10 months attenuated Aβ immunoreactive depositions and thioflavin-S-positive fibrillar type plaques in the brain, and eventually improved cognitive function in the novel object recognition test compared with control AβPPswe/PS1dE9 mice. The present result indicates that TRF reduced amyloid pathology and improved cognitive functions, and suggests that TRF is a potential therapeutic agent for AD.
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Affiliation(s)
- Nor Faeizah Ibrahim
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, Japan.,Department of Biochemistry, Faculty of Medicine, UKMMC, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur, Malaysia
| | - Daijiro Yanagisawa
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, Japan
| | - Lina Wati Durani
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, Japan.,Department of Biochemistry, Faculty of Medicine, UKMMC, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur, Malaysia
| | - Hamizah Shahirah Hamezah
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, Japan.,Department of Biochemistry, Faculty of Medicine, UKMMC, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur, Malaysia
| | - Hanafi Ahmad Damanhuri
- Department of Biochemistry, Faculty of Medicine, UKMMC, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur, Malaysia
| | - Wan Zurinah Wan Ngah
- Department of Biochemistry, Faculty of Medicine, UKMMC, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Cheras, Kuala Lumpur, Malaysia
| | - Mayumi Tsuji
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
| | - Yuji Kiuchi
- Department of Pharmacology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
| | - Kenjiro Ono
- Department of Neurology, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
| | - Ikuo Tooyama
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Seta Tsukinowa-cho, Otsu, Japan
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24
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Kitamura Y, Inden M, Kimoto Y, Takata K, Yanagisawa D, Hijioka M, Ashihara E, Tooyama I, Shimohama S, Ariga H. Effects of a DJ-1-Binding Compound on Spatial Learning and Memory Impairment in a Mouse Model of Alzheimer's Disease. J Alzheimers Dis 2018; 55:67-72. [PMID: 27662308 DOI: 10.3233/jad-160574] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Previously, DJ-1 modulator UCP0054278/comp-B was identified by virtual screening, where comp-B interacts with DJ-1 to produce antioxidant and neuroprotective responses in Parkinson's disease models. However, the effect of comp-B in an in vivo Alzheimer's disease (AD) model is yet undetermined. Thus, we examined the effect of comp-B on spatial learning, memory, and amyloid-β (Aβ) clearance in a transgenic mouse model of AD. We found that comp-B resolved the cognitive deficits, reduced insoluble Aβ42 levels, and prevented the degeneration of synaptic functions, thereby suggesting that comp-B may become a major compound for AD treatment.
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Affiliation(s)
- Yoshihisa Kitamura
- Pharmacology and Neurobiology Laboratory, College of Pharmaceutical Sciences, Ritsumeikan University, Shiga, Japan.,Department of Clinical and Translational Physiology, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Masatoshi Inden
- Laboratory of Medical Therapeutics and Molecular Therapeutics, Gifu Pharmaceutical University, Gifu, Japan
| | - Yasuto Kimoto
- Department of Clinical and Translational Physiology, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Kazuyuki Takata
- Department of Clinical and Translational Physiology, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Daijiro Yanagisawa
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga, Japan
| | - Masanori Hijioka
- Pharmacology and Neurobiology Laboratory, College of Pharmaceutical Sciences, Ritsumeikan University, Shiga, Japan
| | - Eishi Ashihara
- Department of Clinical and Translational Physiology, Kyoto Pharmaceutical University, Kyoto, Japan
| | - Ikuo Tooyama
- Molecular Neuroscience Research Center, Shiga University of Medical Science, Shiga, Japan
| | - Shun Shimohama
- Department of Neurology, Sapporo Medical University, Sapporo, Japan
| | - Hiroyoshi Ariga
- Department of Molecular Biology, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
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Borkar CD, Bharne AP, Nagalakshmi B, Sakharkar AJ, Subhedar NK, Kokare DM. Cocaine- and Amphetamine-Regulated Transcript Peptide (CART) Alleviates MK-801-Induced Schizophrenic Dementia-Like Symptoms. Neuroscience 2018; 375:94-107. [PMID: 29425773 DOI: 10.1016/j.neuroscience.2018.01.056] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 01/22/2018] [Accepted: 01/28/2018] [Indexed: 10/18/2022]
Abstract
Exaggerated thoughts, diminished mood and impaired cognition are the hallmarks of the schizophrenia-like condition. These symptoms are attributed to the dysregulation of dopamine and glutamate signaling in the brain. Since cocaine- and amphetamine-regulated transcript peptide (CART) modulates actions of dopamine as well as glutamate, we tested the role of this peptide in MK-801-induced schizophrenic dementia-like condition. MK-801-treated rats were allowed to interact with conspecific juvenile and tested for short-term (30-min) and long-term (24-h) social memory acquisition and recall. While MK-801 impaired the social interaction with a juvenile, the behavior was restored in CART [intracerebroventricular (icv) or intra-ventral tegmental area (VTA)] pre-treated animals. This action of CART was blocked by SCH23390 (dopamine D1 receptor antagonist) administered directly into the prefrontal cortex (PFC). Application of neuronal tracer Di-I in the PFC retrogradely labeled dopamine cells of the VTA, which in turn seem to receive CARTergic innervation. A significant increase in CARTimmunoreactivity was evidenced in the VTA, PFC and accumbens of the animals allowed to interact with a juvenile. However, MK-801 treatment attenuated the peptide expression and induced social memory deficits. The schizophrenic dementia-like symptoms following antagonism of glutamatergic receptors may be attributed to the reduced dopamine activity in the mesocortical system. We suggest that CART may, positively modulate the dopamine system to alleviate cognitive deficits associated with schizophrenia.
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Affiliation(s)
- Chandrashekhar D Borkar
- Department of Pharmaceutical Sciences, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur 440 033, Maharashtra, India
| | - Ashish P Bharne
- Department of Pharmaceutical Sciences, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur 440 033, Maharashtra, India
| | - B Nagalakshmi
- Department of Biotechnology, Savitribai Phule Pune University, Pune 411 007, Maharashtra, India
| | - Amul J Sakharkar
- Department of Biotechnology, Savitribai Phule Pune University, Pune 411 007, Maharashtra, India
| | - Nishikant K Subhedar
- Indian Institute of Science Education and Research, Dr Homi Bhabha Road, Pune 411 008, Maharashtra, India
| | - Dadasaheb M Kokare
- Department of Pharmaceutical Sciences, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur 440 033, Maharashtra, India.
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Neuroprotective effect of berberine against environmental heavy metals-induced neurotoxicity and Alzheimer's-like disease in rats. Food Chem Toxicol 2017; 111:432-444. [PMID: 29170048 DOI: 10.1016/j.fct.2017.11.025] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Revised: 11/15/2017] [Accepted: 11/18/2017] [Indexed: 01/20/2023]
Abstract
Heavy metals are reported as neurodegenerative disorders progenitor. They play a role in the precipitation of abnormal β-amyloid protein and hyper-phosphorylated tau, the main hallmarks of Alzheimer's disease (AD). The present study aimed to validate the heavy metals-induced Alzheimer's-like disease in rats as an experimental model of AD and explore the therapeutic effect of berberine via tracking its effect on the oxidative stress-inflammatory pathway. Alzheimer's-like disease was induced in rats orally by a mixture of aluminium, cadmium and fluoride for three months, followed by berberine treatment for another one month. Berberine significantly improved the cognitive behaviors in Morris water maze test and offered a protective effect against heavy metals-induced memory impairment. Docking results showed that berberine inhibited AChE, COX-2 and TACE. Matching with in silico study, berberine downregulated the AChE expression and inhibited its activity in the brain tissues. Also, it normalized the production of TNF- α, IL-12, IL-6 and IL-1β. Moreover, it evoked the production of antioxidant Aβ40 and inhibited the formation of Aβ42, responsible for the aggregations of amyloid-β plaques. Histopathological examination confirmed the neuroprotective effect of berberine. The present data advocate the possible beneficial effect of berberine as therapeutic modality for Alzheimer's disease via its antiinflammatory/antioxidant mechanism.
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Rakovska A, Baranyi M, Windisch K, Petkova-Kirova P, Gagov H, Kalfin R. Neurochemical evidence that cocaine- and amphetamine-regulated transcript (CART) 55-102 peptide modulates the dopaminergic reward system by decreasing the dopamine release in the mouse nucleus accumbens. Brain Res Bull 2017; 134:246-252. [PMID: 28802898 DOI: 10.1016/j.brainresbull.2017.08.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 07/05/2017] [Accepted: 08/07/2017] [Indexed: 01/11/2023]
Abstract
CART (Cocaine- and Amphetamine-Regulated Transcript) peptide is a neurotransmitter naturally occurring in the CNS and found mostly in nucleus accumbens, ventrotegmental area, ventral pallidum, amygdalae and striatum, brain regions associated with drug addiction. In the nucleus accumbens, known for its significant role in motivation, pleasure, reward and reinforcement learning, CART peptide inhibits cocaine and amphetamine-induced dopamine-mediated increases in locomotor activity and behavior, suggesting a CART peptide interaction with the dopaminergic system. Thus in the present study, we examined the effect of CART (55-102) peptide on the basal, electrical field stimulation-evoked (EFS-evoked) (30V, 2Hz, 120 shocks) and returning basal dopamine (DA) release and on the release of the DA metabolites 3,4-dihydroxyphenyl acetaldehyde (DOPAL), 3,4-dihydroxyphenylacetic acid (DOPAC), homovanillic acid (HVA), 3,4-dihydroxyphenylethanol (DOPET), 3-methoxytyramine (3-MT) as well as on norepinephrine (NE) and dopamine-o-quinone (Daq) in isolated mouse nucleus accumbens, in a preparation, in which any CART peptide effects on the dendrites or soma of ventral tegmental projection neurons have been excluded. We further extended our study to assess the effect of CART (55-102) peptide on basal cocaine-induced release of dopamine and its metabolites DOPAL, DOPAC, HVA, DOPET and 3-MT as well as on NE and Daq. To analyze the amount of [3H]dopamine, dopamine metabolites, Daq and NE in the nucleus accumbens superfusate, a high-pressure liquid chromatography (HPLC), coupled with electrochemical, UV and radiochemical detections was used. CART (55-102) peptide, 0.1μM, added alone, exerted: (i) a significant decrease in the basal and EFS-evoked levels of extracellular dopamine (ii) a significant increase in the EFS-evoked and returning basal levels of the dopamine metabolites DOPAC and HVA, major products of dopamine degradation and (iii) a significant decrease in the returning basal levels of DOPET. At the same concentration, 0.1μM, CART (55-102) peptide did not have any effect on the release of noradrenaline. In the presence of CART (55-102) peptide, 0.1μM, the effect of cocaine, 30μM, on the basal dopamine release was inhibited and the effect on the basal DOPAC release substantially increased. To our knowledge, our findings are the first to show direct neurochemical evidence that CART (55-102) peptide plays a neuromodulatory role on the dopaminergic reward system by decreasing dopamine in the mouse nucleus accumbens and by attenuating cocaine-induced effects on dopamine release.
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Affiliation(s)
- Angelina Rakovska
- Lab. "Neuropeptides", Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 23, 1113, Sofia, Bulgaria.
| | - Maria Baranyi
- Department of Pharmacology, Institute of Experimental Medicine, Hungarian Academy of Sciences, Szigony u. 43, H-1083, Budapest, Hungary
| | - Katalin Windisch
- Department of Pharmacology, Institute of Experimental Medicine, Hungarian Academy of Sciences, Szigony u. 43, H-1083, Budapest, Hungary
| | - Polina Petkova-Kirova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. bl. 21, 1113, Sofia, Bulgaria
| | - Hristo Gagov
- Faculty of Biology, Sofia University St. Kliment Ohridski, Dragan Tsankov Str. 8, 1164, Sofia, Bulgaria
| | - Reni Kalfin
- Lab. "Neuropeptides", Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 23, 1113, Sofia, Bulgaria
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Yin K, Jin J, Zhu X, Yu L, Wang S, Qian L, Han L, Xu Y. CART modulates beta-amyloid metabolism-associated enzymes and attenuates memory deficits in APP/PS1 mice. Neurol Res 2017; 39:885-894. [PMID: 28743230 DOI: 10.1080/01616412.2017.1348689] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Kailin Yin
- Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Jiali Jin
- Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Xiaolei Zhu
- Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Linjie Yu
- Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Sulei Wang
- Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Lai Qian
- Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Lijuan Han
- Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Yun Xu
- Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
- Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
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Genetic ablation of the p66 Shc adaptor protein reverses cognitive deficits and improves mitochondrial function in an APP transgenic mouse model of Alzheimer's disease. Mol Psychiatry 2017; 22:605-614. [PMID: 27431297 DOI: 10.1038/mp.2016.112] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 04/26/2016] [Accepted: 05/06/2016] [Indexed: 12/20/2022]
Abstract
The mammalian ShcA adaptor protein p66Shc is a key regulator of mitochondrial reactive oxygen species (ROS) production and has previously been shown to mediate amyloid β (Aβ)-peptide-induced cytotoxicity in vitro. Moreover, p66Shc is involved in mammalian longevity and lifespan determination as revealed in the p66Shc knockout mice, which are characterized by a 30% prolonged lifespan, lower ROS levels and protection from age-related impairment of physical and cognitive performance. In this study, we hypothesized a role for p66Shc in Aβ-induced toxicity in vivo and investigated the effects of genetic p66Shc deletion in the PSAPP transgenic mice, an established Alzheimer's disease mouse model of β-amyloidosis. p66Shc-ablated PSAPP mice were characterized by an improved survival and a complete rescue of Aβ-induced cognitive deficits at the age of 15 months. Importantly, these beneficial effects on survival and cognitive performance were independent of Aβ levels and amyloid plaque deposition, but were associated with improved brain mitochondrial respiration, a reversal of mitochondrial complex I dysfunction, restored adenosine triphosphate production and reduced ROS levels. The results of this study support a role for p66Shc in Aβ-related mitochondrial dysfunction and oxidative damage in vivo, and suggest that p66Shc ablation may be a promising novel therapeutic strategy against Aβ-induced toxicity and cognitive impairment.
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Bharne AP, Borkar CD, Bodakuntla S, Lahiri M, Subhedar NK, Kokare DM. Pro-cognitive action of CART is mediated via ERK in the hippocampus. Hippocampus 2016; 26:1313-27. [PMID: 27258934 DOI: 10.1002/hipo.22608] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2016] [Indexed: 12/12/2022]
Abstract
Although cocaine- and amphetamine-regulated transcript peptide (CART) is detected in several cortical and subcortical areas, its role in higher functions has been largely ignored. We examined the significance of CART in memory formation and tested if the downstream actions of CART involve N-methyl-d-aspartate (NMDA) activated extra-cellular signal-regulated kinase (ERK). Newly formed memory was evaluated using novel object recognition test consisting of familiarization (T1) and choice trials (T2). The choice trials were performed at two time points: 30-min (T230-min ) and 24-h (T224-h ) postacquisition. In choice trial (T230-min ), vehicle control rats explored the novel object for significantly longer duration than the familiar object indicating intact memory formation. However, CART-antibody, U0126 [ERK antagonist, both via intracerebroventricular (icv) or intrahippocampal (ih) route] or MK-801 (NMDA antagonist; intraperitoneal) treated rats spent less time exploring novel objects; CART peptide (icv or ih) was ineffective. During choice trial at T224-h , a significant decrease in novel object exploration time was noticed in vehicle control rats suggesting amnesia. However, treatment with CART, prior to familiarization trial (T1), promoted exploration of the novel object even at T224-h . Pretreatment with U0126 or MK-801 blocked pro-cognitive-like effect of CART suggesting involvement of NMDA-ERK pathway in CART's action. Animals subjected to the object familiarization trial showed a drastic increase in the CART-immunoreactivity in the cells of cornu ammonis 3 and polymorph layer of dentate gyrus, and fibers within ento- (ENT) and peri-rhinal (PRH) cortices. Western blot analysis revealed that CART treatment significantly up-regulated the expression of phospo-ERK1/2 in hippocampus, ENT and PRH. This effect was attenuated following pretreatment with U0126 or MK-801, suggesting the activation of ERK signaling cascade through NMDA receptors. Thus, CART system seems to play an important role in recognition memory and that these effects may be mediated by NMDA receptors-ERK signaling in the ENT/PRH-hippocampal circuit. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Ashish P Bharne
- Department of Pharmaceutical Sciences, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India
| | - Chandrashekhar D Borkar
- Department of Pharmaceutical Sciences, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India
| | - Satish Bodakuntla
- Institut Curie, PSL Research University, CNRS UMR3348, Orsay, France
| | - Mayurika Lahiri
- Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune 411 008, India
| | - Nishikant K Subhedar
- Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune 411 008, India
| | - Dadasaheb M Kokare
- Department of Pharmaceutical Sciences, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India.
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31
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Jha SK, Jha NK, Kumar D, Ambasta RK, Kumar P. Linking mitochondrial dysfunction, metabolic syndrome and stress signaling in Neurodegeneration. Biochim Biophys Acta Mol Basis Dis 2016; 1863:1132-1146. [PMID: 27345267 DOI: 10.1016/j.bbadis.2016.06.015] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 06/16/2016] [Accepted: 06/17/2016] [Indexed: 12/13/2022]
Abstract
Mounting evidence suggests a link between metabolic syndrome (MetS) such as diabetes, obesity, non-alcoholic fatty liver disease in the progression of Alzheimer's disease (AD), Parkinson's disease (PD) and other neurodegenerative diseases (NDDs). For instance, accumulated Aβ oligomer is enhancing neuronal Ca2+ release and neural NO where increased NO level in the brain through post translational modification is modulating the level of insulin production. It has been further confirmed that irrespective of origin; brain insulin resistance triggers a cascade of the neurodegeneration phenomenon which can be aggravated by free reactive oxygen species burden, ER stress, metabolic dysfunction, neuorinflammation, reduced cell survival and altered lipid metabolism. Moreover, several studies confirmed that MetS and diabetic sharing common mechanisms in the progression of AD and NDDs where mitochondrial dynamics playing a critical role. Any mutation in mitochondrial DNA, exposure of environmental toxin, high-calorie intake, homeostasis imbalance, glucolipotoxicity is causative factors for mitochondrial dysfunction. These cumulative pleiotropic burdens in mitochondria leads to insulin resistance, increased ROS production; enhanced stress-related enzymes that is directly linked MetS and diabetes in neurodegeneration. Since, the linkup mechanism between mitochondrial dysfunction and disease phenomenon of both MetS and NDDs is quite intriguing, therefore, it is pertinent for the researchers to identify and implement the therapeutic interventions for targeting MetS and NDDs. Herein, we elucidated the pertinent role of MetS induced mitochondrial dysfunction in neurons and their consequences in NDDs. Further, therapeutic potential of well-known biomolecules and chaperones to target altered mitochondria has been comprehensively documented. This article is part of a Special Issue entitled: Oxidative Stress and Mitochondrial Quality in Diabetes/Obesity and Critical Illness Spectrum of Diseases - edited by P. Hemachandra Reddy.
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Affiliation(s)
- Saurabh Kumar Jha
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi 110042, India
| | - Niraj Kumar Jha
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi 110042, India
| | - Dhiraj Kumar
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi 110042, India
| | - Rashmi K Ambasta
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi 110042, India
| | - Pravir Kumar
- Molecular Neuroscience and Functional Genomics Laboratory, Department of Biotechnology, Delhi Technological University (Formerly DCE), Delhi 110042, India.
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Wang S, Yu L, Yang H, Li C, Hui Z, Xu Y, Zhu X. Oridonin Attenuates Synaptic Loss and Cognitive Deficits in an Aβ1-42-Induced Mouse Model of Alzheimer's Disease. PLoS One 2016; 11:e0151397. [PMID: 26974541 PMCID: PMC4790895 DOI: 10.1371/journal.pone.0151397] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 02/26/2016] [Indexed: 12/31/2022] Open
Abstract
Synaptic loss induced by beta-amyloid (Aβ) plays a critical role in the pathophysiology of Alzheimer’s disease (AD), but the mechanisms underlying this process remain unknown. In this study, we found that oridonin (Ori) rescued synaptic loss induced by Aβ1–42in vivo and in vitro and attenuated the alterations in dendritic structure and spine density observed in the hippocampus of AD mice. In addition, Ori increased the expression of PSD-95 and synaptophysin and promoted mitochondrial activity in the synaptosomes of AD mice. Ori also activated the BDNF/TrkB/CREB signaling pathway in the hippocampus of AD mice. Furthermore, in the Morris water maze test, Ori reduced latency and searching distance and increased the number of platform crosses in AD mice. These data suggest that Ori might prevent synaptic loss and improve behavioral symptoms in Aβ1–42-induced AD mice.
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Affiliation(s)
- Sulei Wang
- Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Linjie Yu
- Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, PR China
| | - Hui Yang
- Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Chaosheng Li
- Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Zhen Hui
- Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, PR China
| | - Yun Xu
- Department of Neurology, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, PR China
- Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, PR China
- Jiangsu Stroke Research Collaborative Group, Nanjing, PR China
- Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, PR China
- Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing, PR China
- * E-mail: (YX); (XLZ)
| | - Xiaolei Zhu
- Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, PR China
- * E-mail: (YX); (XLZ)
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