1
|
Sharo C, Zhai T, Huang Z. Investigation of Potential Drug Targets Involved in Inflammation Contributing to Alzheimer's Disease Progression. Pharmaceuticals (Basel) 2024; 17:137. [PMID: 38276010 PMCID: PMC10819325 DOI: 10.3390/ph17010137] [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: 04/01/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 01/27/2024] Open
Abstract
Alzheimer's disease has become a major public health issue. While extensive research has been conducted in the last few decades, few drugs have been approved by the FDA to treat Alzheimer's disease. There is still an urgent need for understanding the disease pathogenesis, as well as identifying new drug targets for further drug discovery. Alzheimer's disease is known to arise from a build-up of amyloid beta (Aβ) plaques as well as tangles of tau proteins. Along similar lines to Alzheimer's disease, inflammation in the brain is known to stem from the degeneration of tissue and build-up of insoluble materials. A minireview was conducted in this work assessing the genes, proteins, reactions, and pathways that link brain inflammation and Alzheimer's disease. Existing tools in Systems Biology were implemented to build protein interaction networks, mainly for the classical complement pathway and G protein-coupled receptors (GPCRs), to rank the protein targets according to their interactions. The top 10 protein targets were mainly from the classical complement pathway. With the consideration of existing clinical trials and crystal structures, proteins C5AR1 and GARBG1 were identified as the best targets for further drug discovery, through computational approaches like ligand-protein docking techniques.
Collapse
Affiliation(s)
| | | | - Zuyi Huang
- Department of Chemical and Biological Engineering, Villanova University, Villanova, PA 19085, USA
| |
Collapse
|
2
|
Petrella C, Ciotti MT, Nisticò R, Piccinin S, Calissano P, Capsoni S, Mercanti D, Cavallaro S, Possenti R, Severini C. Involvement of Bradykinin Receptor 2 in Nerve Growth Factor Neuroprotective Activity. Cells 2020; 9:cells9122651. [PMID: 33321704 PMCID: PMC7763563 DOI: 10.3390/cells9122651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/03/2020] [Accepted: 12/07/2020] [Indexed: 11/17/2022] Open
Abstract
Neurotrophin nerve growth factor (NGF) has been demonstrated to upregulate the gene expression of bradykinin receptor 2 (B2R) on sensory neurons, thus facilitating nociceptive signals. The aim of the present study is to investigate the involvement of B2R in the NGF mechanism of action in nonsensory neurons in vitro by using rat mixed cortical primary cultures (CNs) and mouse hippocampal slices, and in vivo in Alzheimer’s disease (AD) transgenic mice (5xFAD) chronically treated with NGF. A significant NGF-mediated upregulation of B2R was demonstrated by microarray, Western blot, and immunofluorescence analysis in CNs, indicating microglial cells as the target of this modulation. The B2R involvement in the NGF mechanism of action was also demonstrated by using a selective B2R antagonist which was able to reverse the neuroprotective effect of NGF in CNs, as revealed by viability assay, and the NGF-induced long-term potentiation (LTP) in hippocampal slices. To confirm in vitro observations, B2R upregulation was observed in 5xFAD mouse brain following chronic intranasal NGF treatment. This study demonstrates for the first time that B2R is a key element in the neuroprotective activity and synaptic plasticity mediated by NGF in brain cells.
Collapse
Affiliation(s)
- Carla Petrella
- Institute of Biochemistry and Cell Biology, National Research Council, Sapienza University of Rome, Viale del Policlinico, 155-00161 Rome, Italy; (C.P.); (M.T.C.); (D.M.)
| | - Maria Teresa Ciotti
- Institute of Biochemistry and Cell Biology, National Research Council, Sapienza University of Rome, Viale del Policlinico, 155-00161 Rome, Italy; (C.P.); (M.T.C.); (D.M.)
| | - Robert Nisticò
- Department of Biology, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, Italy; (R.N.); (S.P.)
- Rita Levi-Montalcini European Brain Research Institute (EBRI), Viale Regina Elena, 295, 00161 Rome, Italy;
| | - Sonia Piccinin
- Department of Biology, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, Italy; (R.N.); (S.P.)
| | - Pietro Calissano
- Rita Levi-Montalcini European Brain Research Institute (EBRI), Viale Regina Elena, 295, 00161 Rome, Italy;
| | - Simona Capsoni
- Section of Physiology, Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy;
- Bio@SNS Laboratory of Biology, Scuola Normale Superiore, Piazza dei Cavalieri, 7, 56126 Pisa, Italy
| | - Delio Mercanti
- Institute of Biochemistry and Cell Biology, National Research Council, Sapienza University of Rome, Viale del Policlinico, 155-00161 Rome, Italy; (C.P.); (M.T.C.); (D.M.)
| | - Sebastiano Cavallaro
- Institute for Biomedical Research and Innovation, National Research Council, Via Paolo Gaifami 18, 95126 Catania, Italy;
| | - Roberta Possenti
- Department Medicine of Systems, University of Rome “Tor Vergata”, Via della Ricerca Scientifica 1, 00133 Rome, Italy;
| | - Cinzia Severini
- Institute of Biochemistry and Cell Biology, National Research Council, Sapienza University of Rome, Viale del Policlinico, 155-00161 Rome, Italy; (C.P.); (M.T.C.); (D.M.)
- Correspondence:
| |
Collapse
|
3
|
Shirzad S, Neamati A, Vafaee F, Ghazavi H. Bufo viridis secretions improve anxiety and depression-like behavior following intracerebroventricular injection of amyloid β. Res Pharm Sci 2020; 15:571-582. [PMID: 33828600 PMCID: PMC8020856 DOI: 10.4103/1735-5362.301342] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 09/11/2020] [Accepted: 11/14/2020] [Indexed: 01/04/2023] Open
Abstract
Background and purpose: Venenum Bufonis is a Chinese traditional medicine produced from the glandular secretions of toads that contain biogenic amines, which have anti-inflammatory properties. The present study aimed to examine the effect of Bufo viridis secretions (BVS) on anxiety and depression-like behavior and hippocampal senile plaques volume in an animal model of Alzheimer's disease (AD). Experimental approach: Thirty-eight male Wistar rats were used. AD was induced by amyloid-beta (Aβ1-42) (10 μg/2 μL, intracerebroventricular injection, icv) and then BVS at 20, 40, and 80 mg/kg were injected intraperitoneally (ip) in six equal intervals over 21 days. Anxiety and depression-like behavior were assessed using behavioral tests including open field test (OFT), elevated plus maze (EPM), and forced swimming test (FST) 21 days after the surgery. The volume of senile plaques was assessed based on the Cavalieri principle. Findings/Results: Results of the OFT showed that the central crossing number and the time in the AD group were significantly decreased compared to the sham group (P < 0.01 and P < 0.001, respectively). Also, the values of these two parameters significantly increased in the AD + BVS80 group than the AD group (P < 0.05 and P < 0.001, respectively). The time spent in the closed arm in the EPM dramatically increased in the AD group compared to the sham group (P < 0.05) and significantly decreased in the AD + BVS80 group compared to the AD group (P < 0.05). Results of the FST indicated that immobility time had a reduction in the AD + BVS20 (P < 0.01), AD + BVS40, and AD + BVS80 groups compared to the AD group (P < 0.001). The volume of senile plaques in the hippocampus showed a reduction in the treatment groups in comparison with the AD group (P < 0.001 for all). Conclusion and implications: Results revealed that BVS injection could improve symptoms of anxiety and depression and decrease senile plaques in the hippocampus in an animal model of AD.
Collapse
Affiliation(s)
- Shima Shirzad
- Department of Biology, Faculty of Science, Mashhad Branch, Islamic Azad University, Mashhad, I.R. Iran
| | - Ali Neamati
- Department of Biology, Faculty of Science, Mashhad Branch, Islamic Azad University, Mashhad, I.R. Iran
| | - Farzaneh Vafaee
- Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, I.R. Iran.,Department of Neuroscience, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, I.R. Iran
| | - Hamed Ghazavi
- Neuroscience Research Center, Mashhad University of Medical Sciences, Mashhad, I.R. Iran.,Department of Neuroscience, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, I.R. Iran
| |
Collapse
|
4
|
Nunes MA, Toricelli M, Schöwe NM, Malerba HN, Dong-Creste KE, Farah DMAT, De Angelis K, Irigoyen MC, Gobeil F, Araujo Viel T, Buck HS. Kinin B2 Receptor Activation Prevents the Evolution of Alzheimer's Disease Pathological Characteristics in a Transgenic Mouse Model. Pharmaceuticals (Basel) 2020; 13:ph13100288. [PMID: 33019732 PMCID: PMC7601323 DOI: 10.3390/ph13100288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/16/2020] [Accepted: 09/18/2020] [Indexed: 12/02/2022] Open
Abstract
Background: Alzheimer’s disease is mainly characterized by remarkable neurodegeneration in brain areas related to memory formation. This progressive neurodegeneration causes cognitive impairment, changes in behavior, functional disability, and even death. Our group has demonstrated changes in the kallikrein–kinin system (KKS) in Alzheimer’s disease (AD) experimental models, but there is a lack of evidence about the role of the KKS in Alzheimer’s disease. Aim: In order to answer this question, we evaluated the potential of the kinin B2 receptors (BKB2R) to modify AD characteristics, particularly memory impairment, neurodegeneration, and Aβ peptide deposition. Methods: To assess the effects of B2, we used transgenic Alzheimer’s disease mice treated with B2 receptor (B2R) agonists and antagonists, and performed behavioral and biochemical tests. In addition, we performed organotypic hippocampal culture of wild-type (WT) and transgenic (TG) animals, where the density of cytokines, neurotrophin BDNF, activated astrocyte marker S100B, and cell death were analyzed after treatments. Results: Treatment with the B2R agonist preserved the spatial memory of transgenic mice and decreased amyloid plaque deposition. In organotypic hippocampal culture, treatment with B2R agonist decreased cell death, neuroinflammation, and S100B levels, and increased BDNF release. Conclusions: Our results indicate that the kallikrein–kinin system plays a beneficial role in Alzheimer’s disease through B2R activation. The use of B2R agonists could, therefore, be a possible therapeutic option for patients diagnosed with Alzheimer’s disease.
Collapse
Affiliation(s)
- Marielza Andrade Nunes
- Department of Physiological Sciences, Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo 01221-020, Brazil; (M.A.N.); (M.T.); (K.E.D.-C.)
| | - Mariana Toricelli
- Department of Physiological Sciences, Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo 01221-020, Brazil; (M.A.N.); (M.T.); (K.E.D.-C.)
| | - Natalia Mendes Schöwe
- School of Arts, Sciences and Humanities, University of Sao Paulo, Sao Paulo 03828-080, Brazil; (N.M.S.); (H.N.M.); (T.A.V.)
| | - Helena Nascimento Malerba
- School of Arts, Sciences and Humanities, University of Sao Paulo, Sao Paulo 03828-080, Brazil; (N.M.S.); (H.N.M.); (T.A.V.)
| | - Karis Ester Dong-Creste
- Department of Physiological Sciences, Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo 01221-020, Brazil; (M.A.N.); (M.T.); (K.E.D.-C.)
| | - Daniela Moura Azevedo Tuma Farah
- Heart Institute (Incor), Hypertension Unit, University of Sao Paulo, Sao Paulo 05403-900, Brazil; (D.M.A.T.F.); (M.C.I.)
- Department of Physiology, Federal University of São Paulo (UNIFESP), Sao Paulo 04023-901, Brazil;
| | - Katia De Angelis
- Department of Physiology, Federal University of São Paulo (UNIFESP), Sao Paulo 04023-901, Brazil;
- Translational Physiology Laboratory, Universidade Nove de Julho (UNINOVE), Sao Paulo 01504-001, Brazil
| | - Maria Claudia Irigoyen
- Heart Institute (Incor), Hypertension Unit, University of Sao Paulo, Sao Paulo 05403-900, Brazil; (D.M.A.T.F.); (M.C.I.)
| | - Fernand Gobeil
- Department of Pharmacology and Physiology, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada;
| | - Tânia Araujo Viel
- School of Arts, Sciences and Humanities, University of Sao Paulo, Sao Paulo 03828-080, Brazil; (N.M.S.); (H.N.M.); (T.A.V.)
| | - Hudson Sousa Buck
- Department of Physiological Sciences, Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo 01221-020, Brazil; (M.A.N.); (M.T.); (K.E.D.-C.)
- Correspondence: ; Tel./Fax: +55-11-3367-7790
| |
Collapse
|
5
|
Luo H, Wu PF, Cao Y, Jin M, Shen TT, Wang J, Huang JG, Han QQ, He JG, Deng SL, Ni L, Hu ZL, Long LH, Wang F, Chen JG. Angiotensin-Converting Enzyme Inhibitor Rapidly Ameliorates Depressive-Type Behaviors via Bradykinin-Dependent Activation of Mammalian Target of Rapamycin Complex 1. Biol Psychiatry 2020; 88:415-425. [PMID: 32220499 DOI: 10.1016/j.biopsych.2020.02.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 01/22/2020] [Accepted: 02/03/2020] [Indexed: 12/21/2022]
Abstract
BACKGROUND Angiotensin-converting enzyme inhibitors (ACEIs) are widely prescribed antihypertensive agents. Intriguingly, case reports and clinical trials have indicated that ACEIs, including captopril and lisinopril, may have a rapid mood-elevating effect in certain patients, but few experimental studies have investigated their value as fast-onset antidepressants. METHODS The present study consisted of a series of experiments using biochemical assays, immunohistochemistry, and behavioral techniques to examine the effect and mechanism of captopril on depressive-like behavior in 2 animal models, the chronic unpredictable stress model and the chronic social defeat stress model. RESULTS Captopril (19.5 or 39 mg/kg, intraperitoneal injection) exerted rapid antidepressant activity in mice treated under the chronic unpredictable stress model and mice treated under the chronic social defeat stress model. Pharmacokinetic analysis revealed that captopril crossed the blood-brain barrier and that lisinopril, another ACEI with better blood-brain barrier permeability, exerted a faster and longer-lasting effect at a same molar equivalent dose. This antidepressant effect seemed to be independent of the renin-angiotensin system, but dependent on the bradykinin (BK) system, since the decreased BK detected in the stressed mice could be reversed by captopril. The hypofunction of the downstream effector of BK, Cdc42 (cell division control protein 42) homolog, contributed to the stress-induced loss of dendritic spines, which was rapidly reversed by captopril via activating the mTORC1 (mammalian target of rapamycin complex 1) pathway. CONCLUSIONS Our findings indicate that the BK-dependent activation of mTORC1 may represent a promising mechanism underlying antidepressant pharmacology. Considering their affordability and availability, ACEIs may emerge as a novel fast-onset antidepressant, especially for patients with comorbid depression and hypertension.
Collapse
Affiliation(s)
- Han Luo
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Peng-Fei Wu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China; Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, Hubei, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei, China; Laboratory of Neuropsychiatric Diseases, The Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yu Cao
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ming Jin
- Department of Pharmaceutics, College of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Tian-Tian Shen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ji Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jian-Geng Huang
- Department of Pharmaceutics, College of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Qian-Qian Han
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jin-Gang He
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Si-Long Deng
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lan Ni
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Zhuang-Li Hu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China; Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, Hubei, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei, China
| | - Li-Hong Long
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China; Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, Hubei, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei, China; Laboratory of Neuropsychiatric Diseases, The Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Fang Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China; Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, Hubei, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei, China; Laboratory of Neuropsychiatric Diseases, The Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, Hubei, China; The Collaborative-Innovation Center for Brain Science, Wuhan, Hubei, China.
| | - Jian-Guo Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China; Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, Hubei, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, Hubei, China; Laboratory of Neuropsychiatric Diseases, The Institute of Brain Research, Huazhong University of Science and Technology, Wuhan, Hubei, China; The Collaborative-Innovation Center for Brain Science, Wuhan, Hubei, China.
| |
Collapse
|
6
|
Depletion of hypothalamic hypocretin/orexin neurons correlates with impaired memory in a Parkinson's disease animal model. Exp Neurol 2020; 323:113110. [DOI: 10.1016/j.expneurol.2019.113110] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 10/18/2019] [Accepted: 11/07/2019] [Indexed: 12/12/2022]
|
7
|
Ji B, Wang Q, Xue Q, Li W, Li X, Wu Y. The Dual Role of Kinin/Kinin Receptors System in Alzheimer's Disease. Front Mol Neurosci 2019; 12:234. [PMID: 31632239 PMCID: PMC6779775 DOI: 10.3389/fnmol.2019.00234] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 09/13/2019] [Indexed: 11/30/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common neurodegenerative disease characterized by progressive spatial disorientation, learning and memory deficits, responsible for 60%–80% of all dementias. However, the pathological mechanism of AD remains unknown. Numerous studies revealed that kinin/kinin receptors system (KKS) may be involved in the pathophysiology of AD. In this review article, we summarized the roles of KKS in neuroinflammation, cerebrovascular impairment, tau phosphorylation, and amyloid β (Aβ) generation in AD. Moreover, we provide new insights into the mechanistic link between KKS and AD, and highlight the KKS as a potential therapeutic target for AD treatment.
Collapse
Affiliation(s)
- Bingyuan Ji
- Neurobiology Institute, School of Mental Health, Jining Medical University, Jining, China
| | - Qinqin Wang
- Neurobiology Institute, School of Mental Health, Jining Medical University, Jining, China
| | - Qingjie Xue
- Department of Pathogenic Biology, Jining Medical University, Jining, China
| | - Wenfu Li
- Neurobiology Institute, School of Mental Health, Jining Medical University, Jining, China
| | - Xuezhi Li
- Shandong Collaborative Innovation Center for Diagnosis, Treatment and Behavioral Interventions of Mental Disorders, Institute of Mental Health, Jining Medical University, Jining, China.,Shandong Key Laboratory of Behavioral Medicine, School of Mental Health, Jining Medical University, Jining, China
| | - Yili Wu
- Shandong Collaborative Innovation Center for Diagnosis, Treatment and Behavioral Interventions of Mental Disorders, Institute of Mental Health, Jining Medical University, Jining, China.,Shandong Key Laboratory of Behavioral Medicine, School of Mental Health, Jining Medical University, Jining, China
| |
Collapse
|
8
|
Toricelli M, Evangelista SR, Oliveira LR, Viel TA, Buck HS. Neuroprotective Effects of Kinin B2 Receptor in Organotypic Hippocampal Cultures of Middle-Aged Mice. Front Aging Neurosci 2019; 11:168. [PMID: 31354470 PMCID: PMC6639675 DOI: 10.3389/fnagi.2019.00168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 06/17/2019] [Indexed: 11/13/2022] Open
Abstract
Aging is a multifactorial phenomenon that results in several changes at cellular and molecular levels and is considered the main risk factor for some neurodegenerative diseases. Several evidence show the participation of the kallikrein-kinin system (KKS) in neurodegeneration and this system has been associated with inflammation and immunogenic responses in the central and peripheral systems by the activation of the B1 and B2 receptors. Previous work by our group showed that bradykinin (BK) and the B2 receptor played a possible role in neuroprotection. Therefore, the objective of this study was to evaluate the participation of B2 receptors in cell viability, neuroinflammatory response and neuroplasticity in organotypic hippocampal cultures (OHCs) of 6- and 12-month-old mice. It was observed that activation of the B2 receptor by bradykinin decreased the inflammatory response and increased plasticity in 12-month-old slices. Conversely, there was an increase in the inflammatory response and a decrease in neural plasticity in the 6-month-old slices. In both ages, an increase in cell viability was observed. This data suggests that the function of the kinin B2 receptor in the hippocampus is modulated by age, providing neuroprotective action in old age.
Collapse
Affiliation(s)
- Mariana Toricelli
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, São Paulo, Brazil.,Research Group on Neuropharmacology of Aging-ReGNA, São Paulo, Brazil
| | - Sebastiana Ribeiro Evangelista
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, São Paulo, Brazil.,Research Group on Neuropharmacology of Aging-ReGNA, São Paulo, Brazil
| | - Larissa Rolim Oliveira
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, São Paulo, Brazil
| | - Tania Araujo Viel
- Research Group on Neuropharmacology of Aging-ReGNA, São Paulo, Brazil.,School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, Brazil
| | - Hudson Sousa Buck
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, São Paulo, Brazil.,Research Group on Neuropharmacology of Aging-ReGNA, São Paulo, Brazil
| |
Collapse
|
9
|
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.
Collapse
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
| |
Collapse
|
10
|
Telles-Longui M, Mourelle D, Schöwe NM, Cipolli GC, Malerba HN, Buck HS, Viel TA. α7 nicotinic ACh receptors are necessary for memory recovery and neuroprotection promoted by attention training in amyloid-β-infused mice. Br J Pharmacol 2019; 176:3193-3205. [PMID: 31144293 DOI: 10.1111/bph.14744] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 05/04/2019] [Accepted: 05/10/2019] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Attention training reverses the neurodegeneration and memory loss promoted by infusion of amyloid-β (Aβ) peptide in rats and increases the density of α7 nicotinic ACh receptors (α7nAChRs) in brain areas related to memory. Hence, we aimed to assess the role of α7nAChRs in the memory recovery promoted by attention training. EXPERIMENTAL APPROACH C57Bl/6 mice were chronically infused with Aβ, Aβ plus the α7 antagonist methyllycaconitine (MLA), or MLA alone. Control animals were infused with vehicle. Animals were subjected weekly to the active avoidance shuttle box for 4 weeks (attention training). The brain and serum were collected for biochemical and histological analysis. KEY RESULTS Aβ caused cognitive impairment, which was reversed by the weekly training, whereas Aβ + MLA also promoted memory loss but with no reversal with weekly training. MLA alone also promoted memory loss but with only partial reversal with the training. Animals infused with Aβ alone showed senile plaques in hippocampus, no change in BDNF levels in cortex, hippocampus, and serum, but increased AChE activity in cortex and hippocampus. Co-treatment with MLA increased AChE activity and senile plaque deposition in hippocampus as well as reducing BDNF in hippocampus and serum, suggesting a lack of α7nAChR function leads to a loss of neuroprotection mechanisms. CONCLUSIONS AND IMPLICATIONS The α7nAChR has a determinant role in memory recovery and brain resilience in the presence of neurodegeneration promoted by Aβ peptide. These data support further studies concerning these receptors as pharmacological targets for future therapies.
Collapse
Affiliation(s)
- Milena Telles-Longui
- Graduate Course on Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil
| | - Danilo Mourelle
- Graduate Course on Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil
| | - Natalia Mendes Schöwe
- Graduate Course on Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil.,Research Group on Neuropharmacology of Aging, São Paulo, Brazil
| | | | - Helena Nascimento Malerba
- Graduate Course on Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil.,Research Group on Neuropharmacology of Aging, São Paulo, Brazil
| | - Hudson Sousa Buck
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, São Paulo, Brazil.,Research Group on Neuropharmacology of Aging, São Paulo, Brazil
| | - Tania Araujo Viel
- Graduate Course on Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo, Brazil.,School of Arts, Sciences and Humanities, Universidade de São Paulo, São Paulo, Brazil
| |
Collapse
|
11
|
Ni R, Kindler DR, Waag R, Rouault M, Ravikumar P, Nitsch R, Rudin M, Camici GG, Liberale L, Kulic L, Klohs J. fMRI Reveals Mitigation of Cerebrovascular Dysfunction by Bradykinin Receptors 1 and 2 Inhibitor Noscapine in a Mouse Model of Cerebral Amyloidosis. Front Aging Neurosci 2019; 11:27. [PMID: 30890928 PMCID: PMC6413713 DOI: 10.3389/fnagi.2019.00027] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 01/30/2019] [Indexed: 11/28/2022] Open
Abstract
Functional magnetic resonance imaging (fMRI) techniques can be used to assess cerebrovascular dysfunction in Alzheimer’s disease, an important and early contributor to pathology. We hypothesized that bradykinin receptor inhibition alleviates the vascular dysfunction in a transgenic arcAβ mouse model of cerebral amyloidosis and that fMRI techniques can be used to monitor the treatment response. Transgenic arcAβ mice, and non-transgenic littermates of 14 months-of-age were either treated with the bradykinin receptors 1 and 2 blocker noscapine or received normal drinking water as control over 3 months (n = 8–11/group) and all mice were assessed using fMRI at the end of the treatment period. Perfusion MRI using an arterial spin labeling technique showed regional hypoperfusion in arcAβ compared to non-transgenic controls, which was alleviated by noscapine treatment. Similarly, measuring cerebral blood volume changes upon pharmacological stimulation using vessel dilator acetazolamide revealed recovery of regional impairment of cerebral vascular reactivity in arcAβ mice upon noscapine treatment. In addition, we assessed with immunohistochemistry beta-amyloid (Aβ) and inflammation levels in brain sections. Immunohistological stainings for Aβ deposition (6E10) and related microgliosis (Iba1) in the cortex and hippocampus were found comparable between noscapine-treated and untreated arcAβ mice. In addition, levels of soluble and insoluble Aβ38, Aβ40, Aβ42 were found to be similar in brain tissue homogenates of noscapine-treated and untreated arcAβ mice using electro-chemiluminescent based immunoassay. In summary, bradykinin receptors blockade recovered cerebral vascular dysfunction in a mouse model of cerebral amyloidosis. fMRI methods revealed the functional deficit in disease condition and were useful tools to monitor the treatment response.
Collapse
Affiliation(s)
- Ruiqing Ni
- Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Zürich, Switzerland.,Zurich Neuroscience Center, Zürich, Switzerland
| | - Diana Rita Kindler
- Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Zürich, Switzerland
| | - Rebecca Waag
- Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Zürich, Switzerland
| | - Marie Rouault
- Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Zürich, Switzerland.,Zurich Neuroscience Center, Zürich, Switzerland
| | - Priyanka Ravikumar
- Institute for Regenerative Medicine, University of Zurich, Zürich, Switzerland
| | - Roger Nitsch
- Institute for Regenerative Medicine, University of Zurich, Zürich, Switzerland
| | - Markus Rudin
- Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Zürich, Switzerland
| | - Giovanni G Camici
- Zurich Neuroscience Center, Zürich, Switzerland.,Center for Molecular Cardiology, University of Zurich, Zürich, Switzerland
| | - Luca Liberale
- Institute for Regenerative Medicine, University of Zurich, Zürich, Switzerland.,Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Luka Kulic
- Zurich Neuroscience Center, Zürich, Switzerland.,Institute for Regenerative Medicine, University of Zurich, Zürich, Switzerland
| | - Jan Klohs
- Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Zürich, Switzerland.,Zurich Neuroscience Center, Zürich, Switzerland
| |
Collapse
|
12
|
Zhang JY, Bai QK, Zhang YD. Pretreatment with simvastatin upregulates expression of BK-2R and CD11b in the ischemic penumbra of rats. J Biomed Res 2018; 32:354-360. [PMID: 29784898 PMCID: PMC6163114 DOI: 10.7555/jbr.32.20160152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Inhibitors of 3-hydroxy-3-methylglutaryl coenzyme A reductases, collectively known as statins, have been shown to minimize cerebral ischemic events in patients. We assessed the mechanisms of simvastatin pretreatment in preventing cerebral ischemia/reperfusion injury in rats using a model of middle cerebral artery occlusion (MCAO). Rats were pretreated with simvastatin 14 days prior to MCAO induction. At 3, 24, and 48 hours after reperfusion, bradykinin levels in the ischemic penumbra were assayed by ELISA, mRNA levels of bradykinin B2 receptors (BK-2Rs) and CD11b were measured by fluorescent quantitative real-time PCR (RT-PCR), and co-expression of microglia and BK-2Rs was determined by immunofluorescence. Simvastatin had no effect on bradykinin expression in the ischemic penumbra at any time point. However, the levels of BK-2R and CD11b mRNA in the ischemic penumbra, which were significantly decreased 3 hours after ischemia-reperfusion, were increased in simvastatin-pretreated rats. Moreover, the co-expression of BK-2Rs and microglia was confirmed by immunofluorescence analysis. These results suggest that the beneficial effects of simvastatin pretreatment before cerebral ischemia/reperfusion injury in rats may be partially due to increased expression of BK-2R and CD11b in the ischemic penumbra.
Collapse
Affiliation(s)
- Jian-Ying Zhang
- Department of Neurology, Pudong People's Hospital, Shanghai 201299, China
| | - Qing-Ke Bai
- Department of Neurology, Pudong People's Hospital, Shanghai 201299, China
| | - Ying-Dong Zhang
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu 210006, China
| |
Collapse
|
13
|
Balthazar J, Schöwe NM, Cipolli GC, Buck HS, Viel TA. Enriched Environment Significantly Reduced Senile Plaques in a Transgenic Mice Model of Alzheimer's Disease, Improving Memory. Front Aging Neurosci 2018; 10:288. [PMID: 30319394 PMCID: PMC6168651 DOI: 10.3389/fnagi.2018.00288] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 09/03/2018] [Indexed: 01/27/2023] Open
Abstract
Alzheimer's disease (AD) is associated with a progressive dementia, and there is good evidence that it is more pronounced in individuals that have fewer stimuli during their lives. Environmental stimulation promotes morphological and functional changes in the brain, leading to amplification of cognitive functions, and has been described in humans and animals. In this study, we evaluated the effects of enriched environment (EE) stimulation on spatial memory and senile plaque formation in transgenic mice PDGFB-APPSwInd (TG) that overexpress the human amyloid precursor protein, normally resulting in an increased density of senile plaques. We compared this group of EE stimulated transgenic mice (TG-EE) with an EE stimulated control group of age-matched C57Bl/6 wild type animals (WT-EE). Both groups were exposed to EE stimulation between the ages of 8 and 12 months. As controls of the experiment, there were a group of TG mice not exposed to EE (TG-Ctrl) and a group of WT mice not exposed to EE (WT-Ctrl). The TG-EE group presented improved spatial memory when compared to the TG-Ctrl animals. In addition, the TG-EE group showed a 69.2% reduction in the total density of senile plaques in the hippocampus when compared to the TG-Ctrl group. In this group, the concentration of senile plaques was greater in the dorsal part of the hippocampus, which is linked to spatial localization, and the reduction of this density after the submission to EE was as high as 85.1%. EE stimulation had no effect on the density of amyloid-β (Aβ) oligomers. However, amyloid scavenger receptor class B member 1 (SR-B1) density was significantly decreased in the TG-Ctrl mice, but not in the TG-EE mice, suggesting that cognitive stimulation had an effect on the formation of a cognitive reserve that could prevent the accumulation of senile plaques. It is suggested that the stimulation of old mice by EE for 4 months led to the formation of brain resilience that protected the brain from the deposition of senile plaques, one of the hallmarks of AD, leading to improvement in spatial memory.
Collapse
Affiliation(s)
- Janaina Balthazar
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Natalia Mendes Schöwe
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Hudson Sousa Buck
- Department of Physiological Sciences, Faculdade de Ciências Médicas, Santa Casa de São Paulo School of Medical Sciences, São Paulo, Brazil
| | - Tania Araujo Viel
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
14
|
Peineau S, Rabiant K, Pierrefiche O, Potier B. Synaptic plasticity modulation by circulating peptides and metaplasticity: Involvement in Alzheimer's disease. Pharmacol Res 2018; 130:385-401. [PMID: 29425728 DOI: 10.1016/j.phrs.2018.01.018] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 01/23/2018] [Accepted: 01/26/2018] [Indexed: 10/18/2022]
Abstract
Synaptic plasticity is a cellular process involved in learning and memory whose alteration in its two main forms (Long Term Depression (LTD) and Long Term Potentiation (LTP)), is observed in most brain pathologies, including neurodegenerative disorders such as Alzheimer's disease (AD). In humans, AD is associated at the cellular level with neuropathological lesions composed of extracellular deposits of β-amyloid (Aβ) protein aggregates and intracellular neurofibrillary tangles, cellular loss, neuroinflammation and a general brain homeostasis dysregulation. Thus, a dramatic synaptic environment perturbation is observed in AD patients, involving changes in brain neuropeptides, cytokines, growth factors or chemokines concentration and diffusion. Studies performed in animal models demonstrate that these circulating peptides strongly affect synaptic functions and in particular synaptic plasticity. Besides this neuromodulatory action of circulating peptides, other synaptic plasticity regulation mechanisms such as metaplasticity are altered in AD animal models. Here, we will review new insights into the study of synaptic plasticity regulatory/modulatory mechanisms which could influence the process of synaptic plasticity in the context of AD with a particular attention to the role of metaplasticity and peptide dependent neuromodulation.
Collapse
Affiliation(s)
- Stéphane Peineau
- GRAP UMR1247, INSERM, Centre Universitaire de Recherche en Santé, Université de Picardie Jules Verne, Amiens, France; Centre for Synaptic Plasticity, School of Physiology, Pharmacology & Neuroscience, University of Bristol, Bristol, UK.
| | - Kevin Rabiant
- GRAP UMR1247, INSERM, Centre Universitaire de Recherche en Santé, Université de Picardie Jules Verne, Amiens, France
| | - Olivier Pierrefiche
- GRAP UMR1247, INSERM, Centre Universitaire de Recherche en Santé, Université de Picardie Jules Verne, Amiens, France.
| | - Brigitte Potier
- Laboratoire Aimé Cotton, CNRS-ENS UMR9188, Université Paris-Sud, Orsay, France.
| |
Collapse
|
15
|
Naletova I, Nicoletti VG, Milardi D, Pietropaolo A, Grasso G. Copper, differently from zinc, affects the conformation, oligomerization state and activity of bradykinin. Metallomics 2017; 8:750-61. [PMID: 27328010 DOI: 10.1039/c6mt00067c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The sole role of bradykinin (BK) as an inflammatory mediator is controversial, as recent data also support an anti-inflammatory role for BK in Alzheimer's disease (AD). The involvement of two different receptors (B1R and B2R) could be a key to understand this issue. However, although copper and zinc dyshomeostasis has been demonstrated to be largely involved in the development of AD, a detailed study of the interaction of BK with these two metal ions has never been addressed. In this work, we have applied mass spectrometry, circular dichroism as well as computational methods in order to assess if copper and zinc have the ability to modulate the conformation and oligomerization of BK. In addition, we have correlated the chemical data with the effect of metals on the activity of BK analyzed in cell cultures by biochemical procedures. The biochemical analyses on monocyte/macrophage cell culture (THP-1 Cell Line human) in line with the effect of metals on the conformation of BK showed that the presence of copper can affect the signaling cascade mediated by the BK receptors. The results obtained show a further role of metal ions, particularly copper, in the development and outcome of neuroinflammatory diseases. The possible implications in AD are discussed.
Collapse
Affiliation(s)
- Irina Naletova
- Dipartimento di Scienze Biomediche e Biotecnologiche "BIOMETEC", Università degli Studi di Catania, Via S. Sofia 64, 95125 Catania, Italy. and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (C.I.R.C.M.S.B.), Piazza Umberto I, 1-70121 Bari, Italy
| | - Vincenzo G Nicoletti
- Dipartimento di Scienze Biomediche e Biotecnologiche "BIOMETEC", Università degli Studi di Catania, Via S. Sofia 64, 95125 Catania, Italy. and Consorzio Interuniversitario di Ricerca in Chimica dei Metalli nei Sistemi Biologici (C.I.R.C.M.S.B.), Piazza Umberto I, 1-70121 Bari, Italy
| | - Danilo Milardi
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via Paolo Gaifami 18, 95126 Catania, Italy
| | - Adriana Pietropaolo
- Dipartimento di Scienze della Salute, Università di Catanzaro, Campus Universitario, Viale Europa, 88100 Catanzaro, Italy
| | - Giuseppe Grasso
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale Andrea Doria 6, 95125, Catania, Italy.
| |
Collapse
|
16
|
Depletion of coagulation factor XII ameliorates brain pathology and cognitive impairment in Alzheimer disease mice. Blood 2017; 129:2547-2556. [PMID: 28242605 DOI: 10.1182/blood-2016-11-753202] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 02/21/2017] [Indexed: 12/21/2022] Open
Abstract
Vascular abnormalities and inflammation are found in many Alzheimer disease (AD) patients, but whether these changes play a causative role in AD is not clear. The factor XII (FXII) -initiated contact system can trigger both vascular pathology and inflammation and is activated in AD patients and AD mice. We have investigated the role of the contact system in AD pathogenesis. Cleavage of high-molecular-weight kininogen (HK), a marker for activation of the inflammatory arm of the contact system, is increased in a mouse model of AD, and this cleavage is temporally correlated with the onset of brain inflammation. Depletion of FXII in AD mice inhibited HK cleavage in plasma and reduced neuroinflammation, fibrinogen deposition, and neurodegeneration in the brain. Moreover, FXII-depleted AD mice showed better cognitive function than untreated AD mice. These results indicate that FXII-mediated contact system activation contributes to AD pathogenesis, and therefore this system may offer novel targets for AD treatment.
Collapse
|
17
|
Bitencourt RM, Guerra de Souza AC, Bicca MA, Pamplona FA, de Mello N, Passos GF, Medeiros R, Takahashi RN, Calixto JB, Prediger RD. Blockade of hippocampal bradykinin B1 receptors improves spatial learning and memory deficits in middle-aged rats. Behav Brain Res 2017; 316:74-81. [DOI: 10.1016/j.bbr.2016.08.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 07/24/2016] [Accepted: 08/22/2016] [Indexed: 11/30/2022]
|
18
|
Asraf K, Torika N, Danon A, Fleisher-Berkovich S. Involvement of the Bradykinin B 1 Receptor in Microglial Activation: In Vitro and In Vivo Studies. Front Endocrinol (Lausanne) 2017; 8:82. [PMID: 28469598 PMCID: PMC5396024 DOI: 10.3389/fendo.2017.00082] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 03/30/2017] [Indexed: 11/13/2022] Open
Abstract
The importance of brain inflammation to Alzheimer's disease (AD) pathogenesis has been accepted of late, with it currently being held that brain inflammation aggravates AD pathology. One important aspect of brain inflammation is the recruitment and activation of microglia, a process termed microgliosis. Kinins and bradykinin (BK), in particular, are major pro-inflammatory mediators in the periphery, although all of the factors comprising the kinin system have also been described in the brain. Moreover, it was shown that the amyloid β (Aβ) peptide (a component of AD plaques) enhances kinin secretion and activates BK receptors that can, in turn, stimulate Aβ production. Still, the role of bradykinin in modulating brain inflammation and AD is not completely understood. In this study, we aimed to investigate the roles of the bradykinin B1 receptor (B1R) and bradykinin B2 receptor (B2R) in regulating microglial secretion of pro-inflammatory factors in vitro. Furthermore, the effects of intranasal administration of specific B1R and B2R antagonists on Aβ burden and microglial accumulation in the brains of transgenic AD mice were studied. The data obtained show that neither R-715 (a B1R antagonist) nor HOE 140 (a B2R antagonist) altered microglial cell viability. However, R-715, but not HOE 140, markedly increased lipopolysaccharide-induced nitric oxide (NO) and tumor necrosis factor-alpha (TNF-α) release, as well as inducible nitric oxide synthase expression in BV2 microglial cells. Neither antagonist altered NO nor TNF-α production in non-stimulated cells. We also showed that intranasal administration of R-715 but not HOE 140 to 8-week-old 5X familial AD mice enhanced amyloid burden and microglia/macrophage accumulation in the cortex. To conclude, we provide evidence supporting a role of B1R in brain inflammation and in the regulation of amyloid deposition in AD mice, possibly with microglial/macrophage involvement. Further studies are required to test whether modulation of this receptor can serve as a novel therapeutic strategy for AD.
Collapse
Affiliation(s)
- Keren Asraf
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Nofar Torika
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Abraham Danon
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Sigal Fleisher-Berkovich
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- *Correspondence: Sigal Fleisher-Berkovich,
| |
Collapse
|
19
|
Morzelle MC, Salgado JM, Telles M, Mourelle D, Bachiega P, Buck HS, Viel TA. Neuroprotective Effects of Pomegranate Peel Extract after Chronic Infusion with Amyloid-β Peptide in Mice. PLoS One 2016; 11:e0166123. [PMID: 27829013 PMCID: PMC5102433 DOI: 10.1371/journal.pone.0166123] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 10/24/2016] [Indexed: 01/01/2023] Open
Abstract
Alzheimer’s disease is a chronic and degenerative condition that had no treatment until recently. The current therapeutic strategies reduce progression of the disease but are expensive and commonly cause side effects that are uncomfortable for treated patients. Functional foods to prevent and/or treat many conditions, including neurodegenerative diseases, represent a promising field of study currently gaining attention. To this end, here we demonstrate the effects of pomegranate (Punica granatum) peel extract (PPE) regarding spatial memory, biomarkers of neuroplasticity, oxidative stress and inflammation in a mouse model of neurodegeneration. Male C57Bl/6 mice were chronically infused for 35 days with amyloid-β peptide 1–42 (Aβ) or vehicle (control) using mini-osmotic pumps. Another group, also infused with Aβ, was treated with PPE (p.o.– βA+PPE, 800 mg/kg/day). Spatial memory was evaluated in the Barnes maze. Animals treated with PPE and in the control group exhibited a reduction in failure to find the escape box, a finding that was not observed in the Aβ group. The consumption of PPE reduced amyloid plaque density, increased the expression of neurotrophin BDNF and reduced the activity of acetylcholinesterase enzyme. A reduction in lipid peroxidation and in the concentration of the pro-inflammatory cytokine TNF-α was also observed in the PPE group. No hepatic lesions were observed in animals treated with PPE. In conclusion, administration of pomegranate peel extract has neuroprotective effects involving multiple mechanisms to prevent establishment and progression of the neurodegenerative process induced by infusion with amyloid-β peptide in mice.
Collapse
Affiliation(s)
- Maressa Caldeira Morzelle
- Department of Agri-food Industry, Food and Nutrition, ‘Luiz de Queiroz’ College of Agriculture, University of São Paulo, Pádua Dias Avenue, P.O. Box. 9, 13418–900, Piracicaba, SP, Brazil
| | - Jocelem Mastrodi Salgado
- Department of Agri-food Industry, Food and Nutrition, ‘Luiz de Queiroz’ College of Agriculture, University of São Paulo, Pádua Dias Avenue, P.O. Box. 9, 13418–900, Piracicaba, SP, Brazil
| | - Milena Telles
- Graduation Course on Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, Avenida Professor Lineu Prestes, 1524, 05508–900, São Paulo, Brazil
| | - Danilo Mourelle
- Graduation Course on Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, Avenida Professor Lineu Prestes, 1524, 05508–900, São Paulo, Brazil
| | - Patricia Bachiega
- Department of Agri-food Industry, Food and Nutrition, ‘Luiz de Queiroz’ College of Agriculture, University of São Paulo, Pádua Dias Avenue, P.O. Box. 9, 13418–900, Piracicaba, SP, Brazil
| | - Hudson Sousa Buck
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, R. Dr. Cesario Motta Junior, 61, 111° andar, São Paulo, SP 01221–020, Brazil
| | - Tania Araujo Viel
- Graduation Course on Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, Avenida Professor Lineu Prestes, 1524, 05508–900, São Paulo, Brazil
- School of Arts, Sciences and Humanities, Universidade de São Paulo, Av. Arlindo Bettio, 1000, São Paulo, SP 03828–080, Brazil
- * E-mail:
| |
Collapse
|
20
|
Kinin Peptides Enhance Inflammatory and Oxidative Responses Promoting Apoptosis in a Parkinson's Disease Cellular Model. Mediators Inflamm 2016; 2016:4567343. [PMID: 27721576 PMCID: PMC5046043 DOI: 10.1155/2016/4567343] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 08/06/2016] [Accepted: 08/09/2016] [Indexed: 01/06/2023] Open
Abstract
Kinin peptides ubiquitously occur in nervous tissue and participate in inflammatory processes associated with distinct neurological disorders. These substances have also been demonstrated to promote the oxidative stress. On the other hand, the importance of oxidative stress and inflammation has been emphasized in disorders that involve the neurodegenerative processes such as Parkinson's disease (PD). A growing number of reports have demonstrated the increased expression of kinin receptors in neurodegenerative diseases. In this study, the effect of bradykinin and des-Arg10-kallidin, two representative kinin peptides, was analyzed with respect to inflammatory response and induction of oxidative stress in a PD cellular model, obtained after stimulation of differentiated SK-N-SH cells with a neurotoxin, 1-methyl-4-phenylpyridinium. Kinin peptides caused an increased cytokine release and enhanced production of reactive oxygen species and NO by cells. These changes were accompanied by a loss of cell viability and a greater activation of caspases involved in apoptosis progression. Moreover, the neurotoxin and kinin peptides altered the dopamine receptor 2 expression. Kinin receptor expression was also changed by the neurotoxin. These results suggest a mediatory role of kinin peptides in the development of neurodegeneration and may offer new possibilities for its regulation by using specific antagonists of kinin receptors.
Collapse
|
21
|
Dataset for the role of sustained attention in memory formation of transgenic mice for Alzheimer׳s disease. Data Brief 2016; 6:763-8. [PMID: 26909386 PMCID: PMC4744239 DOI: 10.1016/j.dib.2016.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 12/30/2015] [Accepted: 01/08/2016] [Indexed: 11/22/2022] Open
Abstract
Weekly submission of rats to active avoidance apparatus can be considered a neurostimulation strategy, once it can improve memory and can increase the density of receptors from different neurotransmitter systems in brain areas related to memory. These benefits were observed in rats chronically infused with amyloid-β peptide. In the present work it is presented that the same benefit for memory was observed in five months old transgenic mice for Alzheimer’s disease (TG-PDGFB-APPSw,Ind). However, at this age, no change in density of nicotinic receptors was observed.
Collapse
|
22
|
Nunes MA, Schöwe NM, Monteiro-Silva KC, Baraldi-Tornisielo T, Souza SIG, Balthazar J, Albuquerque MS, Caetano AL, Viel TA, Buck HS. Chronic Microdose Lithium Treatment Prevented Memory Loss and Neurohistopathological Changes in a Transgenic Mouse Model of Alzheimer's Disease. PLoS One 2015; 10:e0142267. [PMID: 26605788 PMCID: PMC4659557 DOI: 10.1371/journal.pone.0142267] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 10/20/2015] [Indexed: 12/28/2022] Open
Abstract
The use of lithium is well established in bipolar disorders and the benefits are being demonstrated in neurodegenerative disorders. Recently, our group showed that treatment with microdose lithium stabilized the cognitive deficits observed in Alzheimer's disease (AD) patients. In order to verify the lithium microdose potential in preventing the disease development, the aim of this work was to verify the effects of chronic treatment with microdose lithium given before and after the appearance of symptoms in a mouse model of a disease similar to AD. Transgenic mice (Cg-Tg(PDGFB-APPSwInd)20Lms/2J) and their non-transgenic litter mate genetic controls were treated with lithium carbonate (0.25mg/Kg/day in drinking water) for 16 or 8 months starting at two and ten months of age, respectively [corrected]. Similar groups were treated with water. At the end of treatments, both lithium treated transgenic groups and non-transgenic mice showed no memory disruption, different from what was observed in the water treated transgenic group. Transgenic mice treated with lithium since two months of age showed decreased number of senile plaques, no neuronal loss in cortex and hippocampus and increased BDNF density in cortex, when compared to non-treated transgenic mice. It is suitable to conclude that these data support the use of microdose lithium in the prevention and treatment of Alzheimer's disease, once the neurohistopathological characteristics of the disease were modified and the memory of transgenic animals was maintained.
Collapse
Affiliation(s)
- Marielza Andrade Nunes
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, R. Dr. Cesario Motta Junior, 61, 11° andar, São Paulo, SP 01221–020, Brazil
- Research Group on Neuropharmacology of Aging—ReGNA, Sao Paulo, Brazil
| | - Natalia Mendes Schöwe
- Graduation Course on Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, Avenida Professor Lineu Prestes, 1524, 05508–900 São Paulo, Brazil
- Research Group on Neuropharmacology of Aging—ReGNA, Sao Paulo, Brazil
| | - Karla Cristina Monteiro-Silva
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, R. Dr. Cesario Motta Junior, 61, 11° andar, São Paulo, SP 01221–020, Brazil
| | - Ticiana Baraldi-Tornisielo
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, R. Dr. Cesario Motta Junior, 61, 11° andar, São Paulo, SP 01221–020, Brazil
- Research Group on Neuropharmacology of Aging—ReGNA, Sao Paulo, Brazil
| | - Suzzanna Ingryd Gonçalves Souza
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, R. Dr. Cesario Motta Junior, 61, 11° andar, São Paulo, SP 01221–020, Brazil
| | - Janaina Balthazar
- Graduation Course on Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, Avenida Professor Lineu Prestes, 1524, 05508–900 São Paulo, Brazil
| | - Marilia Silva Albuquerque
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, R. Dr. Cesario Motta Junior, 61, 11° andar, São Paulo, SP 01221–020, Brazil
- Research Group on Neuropharmacology of Aging—ReGNA, Sao Paulo, Brazil
| | - Ariadiny Lima Caetano
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, R. Dr. Cesario Motta Junior, 61, 11° andar, São Paulo, SP 01221–020, Brazil
- Research Group on Neuropharmacology of Aging—ReGNA, Sao Paulo, Brazil
| | - Tania Araujo Viel
- Graduation Course on Pharmacology, Institute of Biomedical Sciences, Universidade de São Paulo, Avenida Professor Lineu Prestes, 1524, 05508–900 São Paulo, Brazil
- School of Arts, Sciences and Humanities, Universidade de São Paulo, Av. Arlindo Bettio, 1000, São Paulo, SP 03828–080, Brazil
- Research Group on Neuropharmacology of Aging—ReGNA, Sao Paulo, Brazil
| | - Hudson Sousa Buck
- Department of Physiological Sciences, Santa Casa de São Paulo School of Medical Sciences, R. Dr. Cesario Motta Junior, 61, 11° andar, São Paulo, SP 01221–020, Brazil
- Research Group on Neuropharmacology of Aging—ReGNA, Sao Paulo, Brazil
| |
Collapse
|
23
|
Caetano AL, Dong-Creste KE, Amaral FA, Monteiro-Silva KC, Pesquero JB, Araujo MS, Montor WR, Viel TA, Buck HS. Kinin B2 receptor can play a neuroprotective role in Alzheimer's disease. Neuropeptides 2015; 53:51-62. [PMID: 26387425 DOI: 10.1016/j.npep.2015.09.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 09/04/2015] [Accepted: 09/05/2015] [Indexed: 12/19/2022]
Abstract
Alzheimer's disease (AD) is characterized by cognitive decline, presence of amyloid-beta peptide (Aβ) aggregates and neurofibrillary tangles. Kinins act through B1 and B2 G-protein coupled receptors (B1R and B2R). Chronic infusion of Aβ peptide leads to memory impairment and increases in densities of both kinin receptors in memory processing areas. Similar memory impairment was observed in C57BL/6 mice (WTAβ) but occurred earlier in mice lacking B2R (KOB2Aβ) and was absent in mice lacking B1R (KOB1Aβ). Thus, the aim of this study was to evaluate the participation of B1R and B2R in Aβ peptide induced cognitive deficits through the evaluation of densitiesof kinin receptors, synapses, cell bodies and number of Aβ deposits in brain ofWTAβ, KOB1Aβ and KOB2Aβ mice. An increase in B2R density was observed in both WTAβ and KOB1Aβ in memory processing related areas. KOB1Aβ showed a decrease in neuronal density and an increase in synaptic density and, in addition, an increase in Aβ deposits in KOB2Aβ was observed. In conclusion, memory preservation in KOB1Aβ, could be due to the increase in densities of B2R, suggesting a neuroprotective role for B2R, reinforced by the increased number of Aβ plaques in KOB2Aβ. Our data point to B2R as a potential therapeutic target in AD.
Collapse
Affiliation(s)
- A L Caetano
- Department of Physiological Sciences, Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, SP CEP 01221-020, Brazil; Research Group on Neuropharmacology of Aging, Brazil
| | - K E Dong-Creste
- Department of Physiological Sciences, Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, SP CEP 01221-020, Brazil; Research Group on Neuropharmacology of Aging, Brazil
| | - F A Amaral
- Department of Physiological Sciences, Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, SP CEP 01221-020, Brazil
| | - K C Monteiro-Silva
- Department of Physiological Sciences, Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, SP CEP 01221-020, Brazil
| | - J B Pesquero
- Department of Biophysics, Federal University of Sao Paulo, São Paulo, SP CEP 04021-001, Brazil
| | - M S Araujo
- Department of Biochemistry, Federal University of Sao Paulo, São Paulo, SP CEP 04021-001, Brazil
| | - W R Montor
- Department of Physiological Sciences, Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, SP CEP 01221-020, Brazil
| | - T A Viel
- School of Arts, Sciences and Humanities and Graduation Course on Pharmacology at Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP CEP 03828-080, Brazil; Research Group on Neuropharmacology of Aging, Brazil
| | - H S Buck
- Department of Physiological Sciences, Santa Casa de Sao Paulo School of Medical Sciences, Sao Paulo, SP CEP 01221-020, Brazil; Research Group on Neuropharmacology of Aging, Brazil
| |
Collapse
|
24
|
Bicca MA, Costa R, Loch-Neckel G, Figueiredo CP, Medeiros R, Calixto JB. B₂ receptor blockage prevents Aβ-induced cognitive impairment by neuroinflammation inhibition. Behav Brain Res 2014; 278:482-91. [PMID: 25446751 DOI: 10.1016/j.bbr.2014.10.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/23/2014] [Accepted: 10/29/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE Aβ-induced neuronal toxicity and memory loss is thought to be dependent on neuroinflammation, an important event in Alzheimer's disease (AD). Previously, we demonstrated that the blockage of the kinin B2 receptor (B2R) protects against the memory deficits induced by amyloid β (Aβ) peptide in mice. In this study, we aimed to investigate the role of B2R on Aβ-induced neuroinflammation in mice and the beneficial effects of B2R blockage in synapses alterations. EXPERIMENTAL APPROACH The selective kinin B2R antagonist HOE 140 (50 pmol/site) was given by intracerebroventricular (i.c.v.) route to male Swiss mice 2 h prior the i.c.v. injection of Aβ(1-40) (400 pmol/site) peptide. Animals were sacrificed, at specific time points after Aβ(1-40) injection (6 h, 1 day or 8 days), and the brain was collected in order to perform immunohistochemical analysis. Different groups of animals were submitted to behavioral cognition tests on day 14 after Aβ(1-40) administration. KEY RESULTS In this study, we report that the pre-treatment with the selective kinin B2R antagonist HOE 140 significantly inhibited Aβ-induced neuroinflammation in mice. B2R antagonism reduced microglial activation and the levels of pro-inflammatory proteins, including COX-2, iNOS and nNOS. Notably, these phenomena were accompanied by an inhibition of MAPKs (JNK and p38) and transcription factors (c-Jun and p65/NF-κB) activation. Finally, the anti-inflammatory effects of B2R antagonism provided significant protection against Aβ(1-40)-induced synaptic loss and cognitive impairment in mice. CONCLUSIONS AND IMPLICATIONS Collectively, these results suggest that B2R activation may play a critical role in Aβ-induced neuroinflammation, one of the most important contributors to AD progression, and its blockage can provide synapses protection.
Collapse
Affiliation(s)
- M A Bicca
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, 88049-900 Florianópolis, Santa Catarina, Brazil
| | - R Costa
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, 88049-900 Florianópolis, Santa Catarina, Brazil
| | - G Loch-Neckel
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, 88049-900 Florianópolis, Santa Catarina, Brazil
| | - C P Figueiredo
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, 88049-900 Florianópolis, Santa Catarina, Brazil
| | - R Medeiros
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, 88049-900 Florianópolis, Santa Catarina, Brazil
| | - J B Calixto
- Departamento de Farmacologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, 88049-900 Florianópolis, Santa Catarina, Brazil.
| |
Collapse
|
25
|
Torika N, Filipovich-Rimon T, Asraf K, Roasso E, Danon A, Fleisher-Berkovich S. Differential regulation of astrocyte prostaglandin response by kinins: possible role for mitogen activated protein kinases. Eur J Pharmacol 2014; 741:323-9. [PMID: 25169427 DOI: 10.1016/j.ejphar.2014.08.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 08/17/2014] [Accepted: 08/18/2014] [Indexed: 12/13/2022]
Abstract
The role of kinins, well known as peripheral inflammatory mediators, in the modulation of brain inflammation is not completely understood. The present data show that bradykinin, a B2 receptor agonist, enhanced both basal and lipopolysaccharide (LPS)-induced cyclooxygenase-2 mRNA and protein levels and prostaglandin E2 synthesis in primary rat astrocytes. By contrast, Lys-des-Arg(9)-bradykinin, which is a bradykinin breakdown product and a selective kinin B1 receptor agonist, attenuated both basal and LPS-induced astrocyte cyclooxygenase-2 mRNA levels and prostaglandin E2 production. Pre-treating the cells with p42/p44 MAPK but not with JNK or p38 inhibitors completely abrogated PGE2 synthesis in cells stimulated with LPS in the presence of bradykinin or bradykinin B1 receptor agonist. Bradykinin, but not the bradykinin B1 receptor agonist, augmented p42/p44 MAPK phosphorylation. The phosphorylation of JNK and p38 was not altered upon exposure to Bradykinin or the bradykinin B1 receptor agonist. These results suggest that the dual delayed effect of kinins on PGE2 synthesis may be due to differential regulation of COX-2 and signaling molecules such as p42/p44 MAPKs. Thus, kinins may exert opposing actions on brain inflammation and neurodegenerative diseases.
Collapse
Affiliation(s)
- Nofar Torika
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
| | - Talia Filipovich-Rimon
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
| | - Keren Asraf
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
| | - Ella Roasso
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
| | - Abraham Danon
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
| | - Sigal Fleisher-Berkovich
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel.
| |
Collapse
|
26
|
Dutra RC, Moreira ELG, Alberti TB, Marcon R, Prediger RD, Calixto JB. Spatial reference memory deficits precede motor dysfunction in an experimental autoimmune encephalomyelitis model: the role of kallikrein-kinin system. Brain Behav Immun 2013; 33:90-101. [PMID: 23777652 DOI: 10.1016/j.bbi.2013.06.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 05/21/2013] [Accepted: 06/07/2013] [Indexed: 12/28/2022] Open
Abstract
Multiple sclerosis (MS) is a progressive T cell-mediated autoimmune demyelinating inflammatory disease of the central nervous system (CNS). Although it is recognized that cognitive deficits represent a manifestation of the disease, the underlying pathogenic mechanisms remain unknown. Here we provide evidence of spatial reference memory impairments during the pre-motor phase of experimental autoimmune encephalomyelitis (EAE) in mice. Specifically, these cognitive deficits were accompanied by down-regulation of choline acetyltransferase (ChAT) mRNA expression on day 5 and 11 post-immunization, and up-regulation of inflammatory cytokines in the hippocampus and prefrontal cortex. Moreover, a marked increase in B1R mRNA expression occurred selectively in the hippocampus, whereas protein level was up-regulated in both brain areas. Genetic deletion of kinin B1R attenuated cognitive deficits and cholinergic dysfunction, and blocked mRNA expression of both IL-17 and IFN-γ in the prefrontal cortex, lymph node and spleen of mice subjected to EAE. The discovery of kinin receptors, mainly B1R, as a target for controlling neuroinflammatory response, as well as the cognitive deficits induced by EAE may foster the therapeutic exploitation of the kallikrein-kinin system (KKS), in particular for the treatment of autoimmune disorders, such as MS, mainly during pre-symptomatic phase.
Collapse
Affiliation(s)
- Rafael C Dutra
- Laboratory of Autoimmunity and Immunopharmacology, Campus Araranguá, Universidade Federal de Santa Catarina, 88900-000 Araranguá, SC, Brazil; Department of Pharmacology, Centre of Biological Sciences, Universidade Federal de Santa Catarina, 88049-900 Florianópolis, SC, Brazil.
| | | | | | | | | | | |
Collapse
|
27
|
Lacoste B, Tong XK, Lahjouji K, Couture R, Hamel E. Cognitive and cerebrovascular improvements following kinin B1 receptor blockade in Alzheimer's disease mice. J Neuroinflammation 2013; 10:57. [PMID: 23642031 PMCID: PMC3710240 DOI: 10.1186/1742-2094-10-57] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Accepted: 04/20/2013] [Indexed: 12/11/2022] Open
Abstract
Background Recent evidence suggests that the inducible kinin B1 receptor (B1R) contributes to pathogenic neuroinflammation induced by amyloid-beta (Aβ) peptide. The present study aims at identifying the cellular distribution and potentially detrimental role of B1R on cognitive and cerebrovascular functions in a mouse model of Alzheimer’s disease (AD). Methods Transgenic mice overexpressing a mutated form of the human amyloid precursor protein (APPSwe,Ind, line J20) were treated with a selective and brain penetrant B1R antagonist (SSR240612, 10 mg/kg/day for 5 or 10 weeks) or vehicle. The impact of B1R blockade was measured on i) spatial learning and memory performance in the Morris water maze, ii) cerebral blood flow (CBF) responses to sensory stimulation using laser Doppler flowmetry, and iii) reactivity of isolated cerebral arteries using online videomicroscopy. Aβ burden was quantified by ELISA and immunostaining, while other AD landmarks were measured by western blot and immunohistochemistry. Results B1R protein levels were increased in APP mouse hippocampus and, prominently, in reactive astrocytes surrounding Aβ plaques. In APP mice, B1R antagonism with SSR240612 improved spatial learning, memory and normalized protein levels of the memory-related early gene Egr-1 in the dentate gyrus of the hippocampus. B1R antagonism restored sensory-evoked CBF responses, endothelium-dependent dilations, and normalized cerebrovascular protein levels of endothelial nitric oxide synthase and B2R. In addition, SSR240612 reduced (approximately 50%) microglial, but not astroglial, activation, brain levels of soluble Aβ1-42, diffuse and dense-core Aβ plaques, and it increased protein levels of the Aβ brain efflux transporter lipoprotein receptor-related protein-1 in cerebral microvessels. Conclusion These findings show a selective upregulation of astroglial B1R in the APP mouse brain, and the capacity of the B1R antagonist to abrogate amyloidosis, cerebrovascular and memory deficits. Collectively, these findings provide convincing evidence for a role of B1R in AD pathogenesis.
Collapse
Affiliation(s)
- Baptiste Lacoste
- Laboratory of Cerebrovascular Research, Montreal Neurological Institute, McGill University, 3801 University Street, Montréal, QC H3A 2B4, Canada
| | | | | | | | | |
Collapse
|
28
|
The bradykinin B1 receptor regulates Aβ deposition and neuroinflammation in Tg-SwDI mice. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 182:1740-9. [PMID: 23470163 DOI: 10.1016/j.ajpath.2013.01.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Revised: 11/30/2012] [Accepted: 01/08/2013] [Indexed: 02/08/2023]
Abstract
The deposition of amyloid-β peptides (Aβ) in the cerebral vasculature, a condition known as cerebral amyloid angiopathy, is increasingly recognized as an important component leading to intracerebral hemorrhage, neuroinflammation, and cognitive impairment in Alzheimer disease (AD) and related disorders. Recent studies demonstrated a role for the bradykinin B1 receptor (B1R) in cognitive deficits induced by Aβ in mice; however, its involvement in AD and cerebral amyloid angiopathy is poorly understood. Herein, we investigated the effect of B1R inhibition on AD-like neuroinflammation and amyloidosis using the transgenic mouse model (Tg-SwDI). B1R expression was found to be up-regulated in brains of Tg-SwDI mice, specifically in the vasculature, neurons, and astrocytes. Notably, administration of the B1R antagonist, R715, to 8-month-old Tg-SwDI mice for 8 weeks resulted in higher Aβ40 levels and increased thioflavin S-positive fibrillar Aβ deposition. Moreover, blockage of B1R inhibited neuroinflammation, as evidenced by the decreased accumulation of activated microglia and reactive astrocytes, diminished NF-κB activation, and reduced cytokine and chemokine levels. Together, our results indicate that B1R activation plays an important role in limiting the accumulation of Aβ in AD-like brain, likely through the regulation of activated glial cell accumulation and release of pro-inflammatory mediators. Therefore, the modulation of the receptor may represent a novel therapeutic approach for AD.
Collapse
|
29
|
Ben-Shmuel S, Danon A, Fleisher-Berkovich S. Bradykinin decreases nitric oxide release from microglia via inhibition of cyclic adenosine monophosphate signaling. Peptides 2013; 40:133-40. [PMID: 23340021 DOI: 10.1016/j.peptides.2013.01.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 01/09/2013] [Accepted: 01/09/2013] [Indexed: 12/14/2022]
Abstract
Bradykinin (BK) is a major potent inflammatory mediator outside the central nervous system. In Alzheimer's disease, BK release and BK receptor expression in brain tissues are upregulated relatively early during the course of the disease. Hence, BK was believed to promote neuroinflammation. However, BK was recently reported to possess anti-inflammatory and neuroprotective roles. Exposure of BV2 microglial cell line to BK lead to a decrease in NO release from unstimulated cells as well as a dose-dependent attenuation, mediated by both B1 and B2 receptors, in lipopolysaccharide (LPS)-induced NO production. In this study we examined whether cyclic adenosine monophosphate (cAMP) signaling is involved in BK-mediated effect in microglial nitric oxide (NO) production. A protein kinase A (PKA) inhibitor mimicked the effects of BK, while cAMP elevating agents antagonized BK-mediated NO decrease. Moreover, BK inhibited the activation of cAMP responsive element binding protein (CREB). In addition, BK protected microglial cells from death triggered by combinations of LPS and each of the cAMP elevating agents. Finally, the addition of Gαi protein inhibitor abrogated the effects of BK on NO release, and the expression of Gαi protein in the plasma membrane was induced by BK. These results suggest that BK-mediated reduction in microglial NO production depends on coupling to Gi protein and also involves inhibition of cAMP-PKA-CREB signaling.
Collapse
Affiliation(s)
- Sarit Ben-Shmuel
- Department of Clinical Pharmacology, Ben Gurion University of the Negev, P.O.B. 653, Beer-Sheva 84105, Israel.
| | | | | |
Collapse
|
30
|
Sarit BS, Lajos G, Abraham D, Ron A, Sigal FB. Inhibitory role of kinins on microglial nitric oxide and tumor necrosis factor-α production. Peptides 2012; 35:172-81. [PMID: 22490447 DOI: 10.1016/j.peptides.2012.03.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 03/25/2012] [Accepted: 03/26/2012] [Indexed: 12/29/2022]
Abstract
Brain inflammation is sustained by chronic activation of microglia and the over-production of pro-inflammatory cytokines and nitric oxide (NO), which in turn can be highly neurotoxic. Microglial activation can be regulated by neuropeptides such as bradykinin (BK) and other members of the kinin family. Kinins are well known inflammatory regulators outside the CNS. Although the kinin system is well distributed throughout the brain, the precise role of BK in the CNS is not yet clear. The aim of this study was to examine and characterize the effects of BK and related kinins on the production of NO and TNF-α in microglia. We found that BK and selective agonists for both B1 and B2 receptors, attenuated both NO and TNF-α levels in the media of BV2 microglial cells that had been stimulated with LPS. The effects of BK that were observed in BV2 cells were confirmed in primary neonatal rat microglial cells as well. In addition, all kinin agonists reduced the expression of iNOS and TNF-α protein and mRNA levels in LPS-stimulated BV2 cells. Also, while LPS activated the nuclear factor-κB (NF-κB) pathway, BK inhibited NF-κB activation by preventing degradation of the κB protein (IκB) inhibitor, abolishing translocation of p65 and p50 subunits to the nucleus and inhibiting NF-κB transcription activity. These results suggest a role for bradykinin in modulation of glial inflammation, as evidenced by attenuation of NO and TNF-α synthesis pathways in activated microglial cells.
Collapse
Affiliation(s)
- Ben-Shmuel Sarit
- Department of Clinical Pharmacology, Ben Gurion University of the Negev, Beer-Sheva, Israel.
| | | | | | | | | |
Collapse
|
31
|
Guevara-Lora I. Kinin-mediated inflammation in neurodegenerative disorders. Neurochem Int 2012; 61:72-8. [PMID: 22554400 DOI: 10.1016/j.neuint.2012.04.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2012] [Revised: 04/01/2012] [Accepted: 04/10/2012] [Indexed: 01/06/2023]
Abstract
The mediatory role of kinins in both acute and chronic inflammation within nervous tissues has been widely described. Bradykinin, the major representative of these bioactive peptides, is one of a few mediators of inflammation that directly stimulates afferent nerves due to the broad expression of specific kinin receptors in cell types in these tissues. Moreover, kinins may be delivered to a site of injury not only after their production at the endothelium surface but also following their local production through the enzymatic degradation of kininogens at the surface of nerve cells. A strong correlation between inflammatory processes and neurodegeneration has been established. The activation of nerve cells, particularly microglia, in response to injury, trauma or infection initiates a number of reactions in the neuronal neighborhood that can lead to cell death after the prolonged action of inflammatory substances. In recent years, there has been a growing interest in the effects of kinins on neuronal destruction. In these studies, the overexpression of proteins involved in kinin generation or of kinin receptors has been observed in several neurologic disorders including neurodegenerative diseases such Alzheimer's disease and multiple sclerosis as well as disorders associated with a deficiency in cell communication such as epilepsy. This review is focused on recent findings that provide reliable evidence of the mediatory role of kinins in the inflammatory responses associated with different neurological disorders. A deeper understanding of the role of kinins in neurodegenerative diseases is likely to promote the future development of new therapeutic strategies for the control of these disorders. An example of this could be the prospective use of kinin receptor antagonists.
Collapse
Affiliation(s)
- Ibeth Guevara-Lora
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland.
| |
Collapse
|
32
|
Chen Y, Zhang M, Li Q, Guo Y, Ding W, Wang L, Zhou Z, Chen X. Interfering effect and mechanism of neuregulin on experimental dementia model in rats. Behav Brain Res 2011; 222:321-5. [DOI: 10.1016/j.bbr.2011.03.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 03/24/2011] [Accepted: 03/29/2011] [Indexed: 11/15/2022]
|
33
|
Chambon C, Wegener N, Gravius A, Danysz W. Behavioural and cellular effects of exogenous amyloid-β peptides in rodents. Behav Brain Res 2011; 225:623-41. [PMID: 21884730 DOI: 10.1016/j.bbr.2011.08.024] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2011] [Revised: 08/10/2011] [Accepted: 08/16/2011] [Indexed: 12/29/2022]
Abstract
A better understanding of Alzheimer's disease (AD) and the development of disease modifying therapies are some of the biggest challenges of the 21st century. One of the core features of AD are amyloid plaques composed of amyloid-beta (Aβ) peptides. The first hypothesis proposed that cognitive deficits are linked to plaque-development and transgenic mice have been generated to study this link, thereby providing a good model to develop new therapeutic approaches. Since later it was recognised that in AD patients the cognitive deficit is rather correlated to soluble amyloid levels, consequently, a new hypothesis appeared associating the earliest amyloid toxicity to these soluble species. The purpose of this review is to give a summary of behavioural and cellular data obtained after soluble Aβ peptide administration into rodents' brain, thereby showing that this model is a valid tool to investigate AD pathology when no plaques are present. Additionally, this method offers an excellent, efficient model to test compounds which could act at such early stages of the disease.
Collapse
Affiliation(s)
- Caroline Chambon
- In Vivo Pharmacology, Merz Pharmaceuticals GmbH, Eckenheimer Landstrasse 100, D-60318 Frankfurt am Main, Germany.
| | | | | | | |
Collapse
|
34
|
Caetano AL, Viel TA, Bittencourt MFQP, Araujo MS, De Angelis K, Buck HS. Change in central kinin B2 receptor density after exercise training in rats. Auton Neurosci 2010; 158:71-8. [PMID: 20637711 DOI: 10.1016/j.autneu.2010.06.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2009] [Revised: 05/29/2010] [Accepted: 06/23/2010] [Indexed: 11/29/2022]
Abstract
Cardiovascular responses elicited by the stimulation of kinin B2 receptors in the IV cerebral ventricle, paratrigeminal nucleus or in the thoracic spinal cord are similar to those observed during an exercise bout. Considering that the kalikrein-kinin system (KKS) could act on the cardiovascular modulation during behavioral responses as physical exercise or stress, this study evaluated the central B2 receptor densities of Wistar (W) and spontaneously hypertensive rats (SHR) after chronic moderate exercise. Animals were exercise-trained for ten weeks on a treadmill. Afterwards, systolic blood pressure decreased in both trained strains. Animals were killed and the medulla and spinal cord extracted for B2 receptor autoradiography. Trained animals were compared to their sedentary controls. Sedentary groups showed specific binding sites for Hoe-140 (fmol/mg of tissue) in laminas 1 and 2 of the spinal cord, nucleus of the solitary tract (NTS), area postrema (AP), spinal trigeminal tract (sp5) and paratrigeminal nucleus (Pa5). In trained W a significant increase (p<0.05) in specific binding was observed in the Pa5 (31.3%) and NTS (28.2%). Trained SHR showed a significant decrease in receptor density in lamina 2 (21.9%) of the thoracic spinal cord and an increase in specific binding in Pa5 (36.1%). We suggest that in the medulla, chronic exercise could hyper stimulate the KKS enhancing their efficiency through the increase of B2 receptor density, involving this receptor in central cardiovascular control during exercise or stress. In the lamina 2, B2 receptor might be involved in the exercise-induced hypotension.
Collapse
Affiliation(s)
- Ariadiny Lima Caetano
- Department of Physiological Sciences, Faculdade de Ciências Médicas da Santa Casa de São Paulo, Sao Paulo, SP, Brazil
| | | | | | | | | | | |
Collapse
|
35
|
Lemos MTR, Amaral FA, Dong KE, Bittencourt MFQP, Caetano AL, Pesquero JB, Viel TA, Buck HS. Role of kinin B1 and B2 receptors in memory consolidation during the aging process of mice. Neuropeptides 2010; 44:163-8. [PMID: 20060587 DOI: 10.1016/j.npep.2009.12.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2009] [Revised: 12/09/2009] [Accepted: 12/10/2009] [Indexed: 01/22/2023]
Abstract
Under physiological conditions, elderly people present memory deficit associated with neuronal loss. This pattern is also associated with Alzheimer's disease but, in this case, in a dramatically intensified level. Kinin receptors have been involved in neurodegeneration and increase of amyloid-beta concentration, associated with Alzheimer's disease (AD). Considering these findings, this work evaluated the role of kinin receptors in memory consolidation during the aging process. Male C57Bl/6 (wt), knock-out B1 (koB1) or B2 (koB2) mice (3, 6, 12 and 18-month-old - mo; n=10 per group) were submitted to an acquisition session, reinforcement to learning (24h later: test 1) and final test (7days later: test 2), in an active avoidance apparatus, to evaluate memory. Conditioned avoidance responses (CAR, % of 50 trials) were registered. In acquisition sessions, similar CAR were obtained among age matched animals from all strains. However, a significant decrease in CAR was observed throughout the aging process (3mo: 8.8+/-2.3%; 6mo: 4.1+/-0.6%; 12mo: 2.2+/-0.6%, 18mo: 3.6+/-0.6%, P<0.01), indicating a reduction in the learning process. In test 1, as expected, memory retention increased significantly (P<0.05) in all 3- and 6-month-old animals as well as in 12-month-old-wt and 12-month-old-koB1 (P<0.01), compared to the training session. However, 12-month-old-koB2 and all 18-month-old animals did not show an increase in memory retention. In test 2, 3- and 6-month-old wt and koB1 mice of all ages showed a significant improvement in memory (P<0.05) compared to test 1. However, 12-month-old wt and koB2 mice of all ages showed no difference in memory retention. We suggest that, during the aging process, the B1 receptor could be involved in neurodegeneration and memory loss. Nevertheless, the B2 receptor is apparently acting as a neuroprotective factor.
Collapse
Affiliation(s)
- Mayra Tolentino Resk Lemos
- Department of Physiological Sciences, Faculdade de Ciências Médicas da Santa Casa de São Paulo. Rua Dr. Cesario Motta Junior, 61, São Paulo, SP, CEP 01221-020, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
36
|
Amaral FA, Lemos MTR, Dong KE, Bittencourt MFQP, Caetano AL, Pesquero JB, Viel TA, Buck HS. Participation of kinin receptors on memory impairment after chronic infusion of human amyloid-beta 1-40 peptide in mice. Neuropeptides 2010; 44:93-7. [PMID: 19926131 DOI: 10.1016/j.npep.2009.10.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2009] [Revised: 09/06/2009] [Accepted: 10/16/2009] [Indexed: 11/26/2022]
Abstract
Chronic infusion of human amyloid-beta 1-40 (Abeta) in the lateral ventricle (LV) of rats is associated with memory impairment and increase of kinin receptors in cortical and hippocampal areas. Deletion of kinin B1 or B2 receptors abolished memory impairment caused by an acute single injection of Abeta in the LV. As brain tissue and kinin receptors could unlikely react to acute or chronic administration of a similar quantity of Abeta, we evaluated the participation of B1 or B2 receptors in memory impairment after chronic infusion of Abeta. Male C57Bl/6J (wt), knock-out B1 (koB1) or B2 (koB2) mice (12weeks of age) previously trained in a two-way shuttle-box and achieving conditioned avoidance responses (CAR, % of 50 trials) were infused with AB (550pmol, 0.12microL/h, 28days) or vehicle in the LV using a mini-osmotic pump. They were tested before the surgery (T0), 7 and 35days after the infusion started (T7; T35). In T0, no difference was observed between CAR of the control (Cwt=59.7+/-6.7%; CkoB1=46.7+/-4.0%; CkoB2=64.4+/-5.8%) and Abeta (Abetawt=66.0+/-3.0%; AbetakoB1=66.8+/-8.2%; AbetakoB2=58.7+/-5.9%) groups. In T7, AbetakoB2 showed a significant decrease in CAR (41.0+/-8.6%) compared to the control-koB2 (72.8+/-2.2%, P<0.05). In T35, a significant decrease (P<0.05) was observed in Abetawt (40.7+/-3.3%) and AbetakoB2 (41.2+/-10.7%) but not in the AbetakoB1 (64.0+/-14.0%) compared to their control groups. No changes were observed in the controls at T35. We suggest that in chronic infusion of BA, B1 receptors could play an important role in the neurodegenerative process. Conversely, the premature memory impairment of koB2 suggests that it may be a protective factor.
Collapse
Affiliation(s)
- Fabio Agostini Amaral
- Department of Physiological Sciences, Faculdade de Ciências Médicas da Santa Casa de São Paulo, Rua Dr. Cesario Motta Junior, 61, São Paulo, SP, CEP 01221-020, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
37
|
Prediger R, Medeiros R, Pandolfo P, Duarte F, Passos G, Pesquero J, Campos M, Calixto J, Takahashi R. Genetic deletion or antagonism of kinin B1 and B2 receptors improves cognitive deficits in a mouse model of Alzheimer's disease. Neuroscience 2008; 151:631-43. [DOI: 10.1016/j.neuroscience.2007.11.009] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2007] [Revised: 11/06/2007] [Accepted: 11/12/2007] [Indexed: 01/08/2023]
|