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Garrido-Suárez BB, Garrido G, Bellma-Menéndez A, Aparicio-López G, Valdés-Martínez O, Morales-Aguiar RA, Fernández-Pérez MD, Ochoa-Rodríguez E, Verdecia-Reyes Y, Delgado-Hernández R. A multi-target ligand (JM-20) prevents morphine-induced hyperalgesia in naïve and neuropathic rats. Eur J Pharmacol 2024; 983:176992. [PMID: 39265881 DOI: 10.1016/j.ejphar.2024.176992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 08/27/2024] [Accepted: 09/06/2024] [Indexed: 09/14/2024]
Abstract
The present study examines the possible inhibitory effect of JM-20, a multi-target neuroprotective compound, on the development of morphine-induced hyperalgesia in Male Sprague-Dawley naïve rats. Additionally, the impact of JM-20 on chronic constriction injury (CCI) rats under chronic morphine exposure was investigated, and its efficacy in reducing mechanical hypersensitivity and histopathological changes in the sciatic nerve was assessed. JM-20 (20 mg/kg, per os [p.o.]), administered 60 min before morphine (10 mg/kg, s.c. twice daily at 12 h intervals) for ten days, significantly inhibited the development of morphine-induced hyperalgesia assessed using an electronic pressure-meter paw test, hot-plate, and formalin test, as well as the appearance of spontaneous withdrawal somatic symptoms in rats. Furthermore, JM-20 decreases spinal pro-inflammatory interleukin-1β and restores glutathione to close physiological concentrations, biomarkers directly related to the intensity of mechanical hypernociception. After CCI and sham surgery, co-treatment with JM-20 (10 mg/kg, p.o.) for five days decreased morphine increased-mechanical hypersensitivity, even 12 days after its discontinuation. Continued morphine treatment imposed a neuroinflammatory challenge in CCI animals, further increasing cellularity (>75% immune cell infiltration) with lymphocytes and macrophages. However, JM-20 co-treatment still reduced the presence of cellular infiltrates (51-75%) with a predominance of lymphocytes. Even in the absence of nerve injury, JM-20 attenuated the peripheral neuroinflammatory response observed in morphine-treated sham-operated animals (0% vs. 1-25%). These findings suggest that JM-20 could prevent morphine-induced hyperalgesia by anti-inflammatory and antioxidant mechanisms.
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Affiliation(s)
- Bárbara B Garrido-Suárez
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba; Instituto de Ciencias del Mar, Loma y 37, Nuevo Vedado, Havana, CP 10300, Cuba.
| | - Gabino Garrido
- Departamento de Ciencias Farmacéuticas, Facultad de Ciencias, Edificio Ñ3, Universidad Católica del Norte, Angamos, 0610, Antofagasta, CP 124000, Chile.
| | - Addis Bellma-Menéndez
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Guillermo Aparicio-López
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Odalys Valdés-Martínez
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | | | | | - Estael Ochoa-Rodríguez
- Laboratorio de Síntesis Orgánica de La Facultad de Química de La Universidad de La Habana, Zapata s/n entre G y Carlitos Aguirre, Vedado Plaza de la Revolución, CP 10400, La Habana, Cuba
| | - Yamila Verdecia-Reyes
- Laboratorio de Síntesis Orgánica de La Facultad de Química de La Universidad de La Habana, Zapata s/n entre G y Carlitos Aguirre, Vedado Plaza de la Revolución, CP 10400, La Habana, Cuba
| | - René Delgado-Hernández
- Clinical Pharmacy and Pharmaceutical Care Unit, Department of Pharmacy and Pharmaceutical Technology, and Physical Chemistry, Faculty of Pharmacy and Food Sciences, Universitat de Barcelona, Av. Joan XXIII, 27-31, 08028, Barcelona, Spain
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Fonseca-Fonseca LA, Fuentes NP, Sánchez JR, Iglesias ÁT, Outeiro TF, Silva VDAD, Costa SL, Núñez-Figueredo Y. Correlational assessment of the effects of JM-20 in a rat model of parkinsonism. Behav Brain Res 2024; 476:115269. [PMID: 39313072 DOI: 10.1016/j.bbr.2024.115269] [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: 07/25/2024] [Revised: 09/20/2024] [Accepted: 09/20/2024] [Indexed: 09/25/2024]
Abstract
We previously demonstrated that JM-20, a molecule with neuroactive functions, protects rats against rotenone and 6-hydroxydopamine (6-OHDA) neurotoxicity. In addition, we demonstrated that JM-20 inhibits the aggregation and cytotoxicity of alpha-synuclein in vitro. In this study, we performed correlation studies between morphological and molecular variables, as well as the motor behavior of parkinsonian rats (6-OHDA and rotenone lesion) treated with JM-20 at different doses (oral with gavage). Our results showed that higher asymmetry evaluated in the cylinder test correlated with greater redox alterations, death of dopaminergic neurons and increased astrogliosis. In the rotenone model, our results showed that a lower number of vertical rearing was correlated with greater redox alterations and increased mitochondrial dysfunction. In both models (6-OHDA and rotenone), parkinsonian animals treated with the highest doses of JM-20 (20 and 40 mg/kg) showed reduced behavioral impairments (lower asymmetry value and higher amount of vertical rearing). Also, a reduced loss of mesencephalic dopaminergic neurons, a smaller number of astrocyte cells in this region, less redox alterations and less mitochondrial dysfunction was observed. In total, our results demonstrate a correlation between behavioral and biochemical variables evaluated in the preclinical models of parkinsonism induced by 6-OHDA and rotenone.
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Affiliation(s)
- Luis Arturo Fonseca-Fonseca
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, La Habana CP 10600, Cuba.
| | - Nancy Pavón Fuentes
- Centro Internacional de Restauración Neurológica (CIREN), Playa, La Habana, Cuba.
| | - Jeney Ramírez Sánchez
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, La Habana CP 10600, Cuba
| | - Ángela Tuero Iglesias
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, La Habana CP 10600, Cuba
| | - Tiago Fleming Outeiro
- University Medical Center Gottingen, Department of Experimental Neurodegeneration, Center for Biostructural Imaging of Neurodegeneration, Göttingen, Germany; Max Planck Institute for Experimental Medicine, Goettingen, Germany; Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Framlington Place, Newcastle Upon Tyne NE2 4HH, UK
| | - Víctor Diogenes Amaral da Silva
- Laboratório de Neuroquímica e Biologia Celular, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Av. Reitor Miguel Calmon s/n, Vale do Canela, Salvador Bahia CEP 41100-100, Brazil
| | - Silvia Lima Costa
- Laboratório de Neuroquímica e Biologia Celular, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Av. Reitor Miguel Calmon s/n, Vale do Canela, Salvador Bahia CEP 41100-100, Brazil
| | - Yanier Núñez-Figueredo
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, La Habana CP 10600, Cuba.
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Silva FDD, Galiciolli MEDA, Irioda AC, Oliveira CS, Piccoli BC, Prestes ADS, Borin BC, Schuch AP, Ochoa-Rodríguez E, Nuñez-Figueredo Y, Rocha JBTD. Investigation of the cytotoxicity, genotoxicity and antioxidant prospects of JM-20 on human blood cells: A multi-target compound with potential therapeutic applications. Blood Cells Mol Dis 2024; 106:102827. [PMID: 38301450 DOI: 10.1016/j.bcmd.2024.102827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 01/10/2024] [Accepted: 01/16/2024] [Indexed: 02/03/2024]
Abstract
JM-20 is a 1,5-benzodiazepine compound fused to a dihydropyridine fraction with different pharmacological properties. However, its potential toxic effects on blood cells have not yet been reported. Thus, the present study aimed to investigate, for the first time, the possible cytotoxicity of JM-20 through cell viability, cell cycle, morphology changes, reactive species (RS) to DCFH-DA, and lipid peroxidation in human leukocytes, its hemolytic effect on human erythrocytes, and its potential DNA genotoxicity using plasmid DNA in vitro. Furthermore, the compound's ability to reduce the DPPH radical was also measured. Human blood was obtained from healthy volunteers (30 ± 10 years old), and the leukocytes or erythrocytes were immediately isolated and treated with different concentrations of JM-20. A cytoprotective effect was exhibited by 10 μM JM-20 against 1 mM tert-butyl hydroperoxide (t-but-OOH) in the leukocytes. However, the highest tested concentrations of the compound (20 and 50 μM) changed the morphology and caused a significant decrease in the cell viability of leukocytes (p < 0.05, in comparison with Control). All tested concentrations of JM-20 also resulted in a significant increase in intracellular RS as measured by DCFH-DA in these cells (p < 0.05, in comparison with Control). On the other hand, the results point out a potent antioxidant effect of JM-20, which was similar to the classical antioxidant α-tocopherol. The IC50 value of JM-20 against the lipid peroxidation induced by (FeII) was 1.051 μM ± 0.21, while the IC50 value of α-tocopherol in this parameter was 1.065 μM ± 0.34. Additionally, 50 and 100 μM JM-20 reduced the DPPH radical in a statistically similar way to the 100 μM α-tocopherol (p < 0.05, in comparison with the control). No significant hemolysis in erythrocytes, no cell cycle changes in leukocytes, and no genotoxic effects in plasmid DNA were induced by JM-20 at any tested concentration. The in silico pharmacokinetic and toxicological properties of JM-20, derivatives, and nifedipine were also studied. Here, our findings demonstrate that JM-20 and its putative metabolites exhibit similar characteristics to nifedipine, and the in vitro and in silico data support the low toxicity of JM-20 to mammals.
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Affiliation(s)
- Fernanda D'Avila da Silva
- Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Maria Eduarda de Andrade Galiciolli
- Programa de Pós-Graduação Stricto Sensu em Biotecnologia Aplicada a Saúde da Criança e do Adolescente, Instituto de Pesquisa Pelé Pequeno Príncipe, Rua Silva Jardim, 1632 Curitiba, Paraná, Brazil; Faculdade Pequeno Príncipe, Avenida Iguaçu, 333 Curitiba, Paraná, Brazil
| | - Ana Carolina Irioda
- Programa de Pós-Graduação Stricto Sensu em Biotecnologia Aplicada a Saúde da Criança e do Adolescente, Instituto de Pesquisa Pelé Pequeno Príncipe, Rua Silva Jardim, 1632 Curitiba, Paraná, Brazil; Faculdade Pequeno Príncipe, Avenida Iguaçu, 333 Curitiba, Paraná, Brazil
| | - Cláudia Sirlene Oliveira
- Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil; Programa de Pós-Graduação Stricto Sensu em Biotecnologia Aplicada a Saúde da Criança e do Adolescente, Instituto de Pesquisa Pelé Pequeno Príncipe, Rua Silva Jardim, 1632 Curitiba, Paraná, Brazil; Faculdade Pequeno Príncipe, Avenida Iguaçu, 333 Curitiba, Paraná, Brazil
| | - Bruna Candia Piccoli
- Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Alessandro de Souza Prestes
- Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Bruna Cogo Borin
- Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Andre Passaglia Schuch
- Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Estael Ochoa-Rodríguez
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, N° 1605,e /Boyeros y Puentes Grandes, CP10600 La Habana, Cuba
| | - Yanier Nuñez-Figueredo
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, N° 1605,e /Boyeros y Puentes Grandes, CP10600 La Habana, Cuba
| | - João Batista Teixeira da Rocha
- Programa de Pós-graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
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Chen ZG, Shi X, Zhang XX, Yang FF, Li KR, Fang Q, Cao C, Chen XH, Peng Y. Neuron-secreted NLGN3 ameliorates ischemic brain injury via activating Gαi1/3-Akt signaling. Cell Death Dis 2023; 14:700. [PMID: 37880221 PMCID: PMC10600254 DOI: 10.1038/s41419-023-06219-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/12/2023] [Accepted: 10/16/2023] [Indexed: 10/27/2023]
Abstract
We here tested the potential activity and the underlying mechanisms of neuroligin-3 (NLGN3) against ischemia-reperfusion-induced neuronal cell injury. In SH-SY5Y neuronal cells and primary murine cortical neurons, NLGN3 activated Akt-mTOR and Erk signalings, and inhibited oxygen and glucose deprivation (OGD)/re-oxygenation (OGD/R)-induced cytotoxicity. Akt activation was required for NLGN3-induced neuroprotection. Gαi1/3 mediated NLGN3-induced downstream signaling activation. NLGN3-induced Akt-S6K1 activation was largely inhibited by Gαi1/3 silencing or knockout. Significantly, NLGN3-induced neuroprotection against OGD/R was almost abolished by Gαi1/3 silencing or knockout. In vivo, the middle cerebral artery occlusion (MCAO) procedure induced NLGN3 cleavage and secretion, and increased its expression and Akt activation in mouse brain tissues. ADAM10 (A Disintegrin and Metalloproteinase 10) inhibition blocked MCAO-induced NLGN3 cleavage and secretion, exacerbating ischemic brain injury in mice. Neuronal silencing of NLGN3 or Gαi1/3 in mice also inhibited Akt activation and intensified MCAO-induced ischemic brain injury. Conversely, neuronal overexpression of NLGN3 increased Akt activation and alleviated MCAO-induced ischemic brain injury. Together, NLGN3 activates Gαi1/3-Akt signaling to protect neuronal cells from ischemia-reperfusion injury.
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Affiliation(s)
- Zhi-Guo Chen
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xin Shi
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Institute of Neuroscience, Soochow University, Suzhou, China
| | - Xian-Xian Zhang
- Department of Neurology, Affiliated Hospital 6 of Nantong University, Yancheng Third People's Hospital, Yancheng, China
| | - Fang-Fang Yang
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Institute of Neuroscience, Soochow University, Suzhou, China
| | - Ke-Ran Li
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Institute of Neuroscience, Soochow University, Suzhou, China
| | - Qi Fang
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China.
| | - Cong Cao
- Department of Neurology and Clinical Research Center of Neurological Disease, The Second Affiliated Hospital of Soochow University, Institute of Neuroscience, Soochow University, Suzhou, China.
| | - Xiong-Hui Chen
- Department of Emergency Surgery, First Affiliated Hospital of Soochow University, Suzhou, China.
| | - Ya Peng
- Department of Neurosurgery, The Third Affiliated Hospital of Soochow University, Changzhou, China.
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Miranda C, Ruiz-Picazo A, Pomares P, Gonzalez-Alvarez I, Bermejo M, Gonzalez-Alvarez M, Avdeef A, Cabrera-Pérez MÁ. Integration of In Silico, In Vitro and In Situ Tools for the Preformulation and Characterization of a Novel Cardio-Neuroprotective Compound during the Early Stages of Drug Development. Pharmaceutics 2022; 14:182. [PMID: 35057075 PMCID: PMC8780741 DOI: 10.3390/pharmaceutics14010182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/14/2021] [Accepted: 01/05/2022] [Indexed: 11/18/2022] Open
Abstract
The main aim of this work is the biopharmaceutical characterization of a new hybrid benzodiazepine-dihydropyridine derivative, JM-20, derived with potent anti-ischemic and neuroprotective effects. In this study, the pKa and the pH-solubility profile were experimentally determined. Additionally, effective intestinal permeability was measured using three in vitro epithelial cell lines (MDCK, MDCK-MDR1 and Caco-2) and an in situ closed-loop intestinal perfusion technique. The results indicate that JM-20 is more soluble at acidic pH (9.18 ± 0.16); however, the Dose number (Do) was greater than 1, suggesting that it is a low-solubility compound. The permeability values obtained with in vitro cell lines as well as with the in situ perfusion method show that JM-20 is a highly permeable compound (Caco-2 value 3.8 × 10-5). The presence of an absorption carrier-mediated transport mechanism was also demonstrated, as well as the efflux effect of P-glycoprotein on the permeability values. Finally, JM-20 was provisionally classified as class 2 according to the biopharmaceutical classification system (BCS) due to its high intestinal permeability and low solubility. The potential good oral absorption of this compound could be limited by its solubility.
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Affiliation(s)
- Claudia Miranda
- Unit of Modeling & Experimental Biopharmaceutics, Central “Marta Abreu” de Las Villas, Centro de Bioactivos Químicos Universidad, Santa Clara 50100, Cuba; (C.M.); (M.-Á.C.-P.)
| | - Alejandro Ruiz-Picazo
- Department Engineering of Pharmacokinetics and Pharmaceutical Technology Area, Miguel Hernandez University, 03550 Alicante, Spain; (A.R.-P.); (P.P.); (I.G.-A.); (M.B.)
| | - Paula Pomares
- Department Engineering of Pharmacokinetics and Pharmaceutical Technology Area, Miguel Hernandez University, 03550 Alicante, Spain; (A.R.-P.); (P.P.); (I.G.-A.); (M.B.)
| | - Isabel Gonzalez-Alvarez
- Department Engineering of Pharmacokinetics and Pharmaceutical Technology Area, Miguel Hernandez University, 03550 Alicante, Spain; (A.R.-P.); (P.P.); (I.G.-A.); (M.B.)
| | - Marival Bermejo
- Department Engineering of Pharmacokinetics and Pharmaceutical Technology Area, Miguel Hernandez University, 03550 Alicante, Spain; (A.R.-P.); (P.P.); (I.G.-A.); (M.B.)
| | - Marta Gonzalez-Alvarez
- Department Engineering of Pharmacokinetics and Pharmaceutical Technology Area, Miguel Hernandez University, 03550 Alicante, Spain; (A.R.-P.); (P.P.); (I.G.-A.); (M.B.)
| | - Alex Avdeef
- In-ADME Research, 1732 First Avenue # 102, New York, NY 10128, USA;
| | - Miguel-Ángel Cabrera-Pérez
- Unit of Modeling & Experimental Biopharmaceutics, Central “Marta Abreu” de Las Villas, Centro de Bioactivos Químicos Universidad, Santa Clara 50100, Cuba; (C.M.); (M.-Á.C.-P.)
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Wong-Guerra M, Montano-Peguero Y, Ramírez-Sánchez J, Jiménez-Martin J, Fonseca-Fonseca LA, Hernández-Enseñat D, Nonose Y, Valdés O, Mondelo-Rodriguez A, Ortiz-Miranda Y, Bergado G, Carmenate T, Soto Del Valle RM, Pardo-Andreu G, Outeiro TF, Padrón-Yaquis AS, Martimbianco de Assis A, O Souza D, Nuñez-Figueredo Y. JM-20 treatment prevents neuronal damage and memory impairment induced by aluminum chloride in rats. Neurotoxicology 2021; 87:70-85. [PMID: 34481871 DOI: 10.1016/j.neuro.2021.08.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 08/31/2021] [Accepted: 08/31/2021] [Indexed: 02/05/2023]
Abstract
The number of people with dementia worldwide is estimated at 50 million by 2018 and continues to rise mainly due to increasing aging and population growth. Clinical impact of current interventions remains modest and all efforts aimed at the identification of new therapeutic approaches are therefore critical. Previously, we showed that JM-20, a dihydropyridine-benzodiazepine hybrid molecule, protected memory processes against scopolamine-induced cholinergic dysfunction. In order to gain further insight into the therapeutic potential of JM-20 on cognitive decline and Alzheimer's disease (AD) pathology, here we evaluated its neuroprotective effects after chronic aluminum chloride (AlCl3) administration to rats and assessed possible alterations in several types of episodic memory and associated pathological mechanisms. Oral administration of aluminum to rodents recapitulates several neuropathological alterations and cognitive impairment, being considered a convenient tool for testing the efficacy of new therapies for dementia. We used behavioral tasks to test spatial, emotional- associative and novel object recognition memory, as well as molecular, enzymatic and histological assays to evaluate selected biochemical parameters. Our study revealed that JM-20 prevented memory decline alongside the inhibition of AlCl3 -induced oxidative stress, increased AChE activity, TNF-α and pro-apoptotic proteins (like Bax, caspase-3, and 8) levels. JM-20 also protected against neuronal damage in the hippocampus and prefrontal cortex. Our findings expanded our understanding of the ability of JM-20 to preserve memory in rats under neurotoxic conditions and confirm its potential capacity to counteract cognitive impairment and etiological factors of AD by breaking the progression of key steps associated with neurodegeneration.
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Affiliation(s)
- Maylin Wong-Guerra
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No.1605, e/Boyeros y Puentes Grandes, CP10600, La Habana, Cuba
| | - Yanay Montano-Peguero
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No.1605, e/Boyeros y Puentes Grandes, CP10600, La Habana, Cuba
| | - Jeney Ramírez-Sánchez
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No.1605, e/Boyeros y Puentes Grandes, CP10600, La Habana, Cuba
| | - Javier Jiménez-Martin
- Department of Physiology, Otago School of Medical Sciences, University of Otago, P.O. Box 913, Dunedin, 9016, New Zealand
| | - Luis Arturo Fonseca-Fonseca
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No.1605, e/Boyeros y Puentes Grandes, CP10600, La Habana, Cuba
| | - Daniela Hernández-Enseñat
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No.1605, e/Boyeros y Puentes Grandes, CP10600, La Habana, Cuba
| | - Yasmine Nonose
- Department of Biochemistry, Universidade Federal do Rio Grande do Sul-UFRGS, Porto Alegre, Brazil
| | - Odalys Valdés
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No.1605, e/Boyeros y Puentes Grandes, CP10600, La Habana, Cuba
| | - Abel Mondelo-Rodriguez
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No.1605, e/Boyeros y Puentes Grandes, CP10600, La Habana, Cuba
| | - Yaquelin Ortiz-Miranda
- Centro de Inmunología Molecular, Calle 216 esq 15, Atabey, Playa, PO Box 16040, Havana, Cuba
| | - Gretchen Bergado
- Centro de Inmunología Molecular, Calle 216 esq 15, Atabey, Playa, PO Box 16040, Havana, Cuba
| | - Tania Carmenate
- Centro de Inmunología Molecular, Calle 216 esq 15, Atabey, Playa, PO Box 16040, Havana, Cuba
| | | | - Gilberto Pardo-Andreu
- Centro de Estudio para las Investigaciones y Evaluaciones Biológicas, Instituto de Farmacia y Alimentos, Universidad de La Habana, Calle 222, No. 2317, e/ 23 y 31, La Coronela, La Lisa, CP 13600, La Habana, Cuba
| | - Tiago Fleming Outeiro
- Department of Experimental Neurodegeneration, Center for Biostructural Imaging of Neurodegeneration, University Medical Center Gottingen, Göttingen, Germany; Max Planck Institute for Experimental Medicine, Goettingen, Germany; Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle, UK
| | - Alejandro Saúl Padrón-Yaquis
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No.1605, e/Boyeros y Puentes Grandes, CP10600, La Habana, Cuba
| | - Adriano Martimbianco de Assis
- University, Framlington Place, Newcastle Upon Tyne, NE2 4HH, UK; Post-graduate Program in Health and Behavior, Health Sciences Centre, Universidade Católica de Pelotas, Pelotas, Brazil
| | - Diogo O Souza
- Department of Biochemistry, Universidade Federal do Rio Grande do Sul-UFRGS, Porto Alegre, Brazil
| | - Yanier Nuñez-Figueredo
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No.1605, e/Boyeros y Puentes Grandes, CP10600, La Habana, Cuba.
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7
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Delbridge ARD, Huh D, Brickelmaier M, Burns JC, Roberts C, Challa R, Raymond N, Cullen P, Carlile TM, Ennis KA, Liu M, Sun C, Allaire NE, Foos M, Tsai HH, Franchimont N, Ransohoff RM, Butts C, Mingueneau M. Organotypic Brain Slice Culture Microglia Exhibit Molecular Similarity to Acutely-Isolated Adult Microglia and Provide a Platform to Study Neuroinflammation. Front Cell Neurosci 2020; 14:592005. [PMID: 33473245 PMCID: PMC7812919 DOI: 10.3389/fncel.2020.592005] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/24/2020] [Indexed: 12/14/2022] Open
Abstract
Microglia are central nervous system (CNS) resident immune cells that have been implicated in neuroinflammatory pathogenesis of a variety of neurological conditions. Their manifold context-dependent contributions to neuroinflammation are only beginning to be elucidated, which can be attributed in part to the challenges of studying microglia in vivo and the lack of tractable in vitro systems to study microglia function. Organotypic brain slice cultures offer a tissue-relevant context that enables the study of CNS resident cells and the analysis of brain slice microglial phenotypes has provided important insights, in particular into neuroprotective functions. Here we use RNA sequencing, direct digital quantification of gene expression with nCounter® technology and targeted analysis of individual microglial signature genes, to characterize brain slice microglia relative to acutely-isolated counterparts and 2-dimensional (2D) primary microglia cultures, a widely used in vitro surrogate. Analysis using single cell and population-based methods found brain slice microglia exhibited better preservation of canonical microglia markers and overall gene expression with stronger fidelity to acutely-isolated adult microglia, relative to in vitro cells. We characterized the dynamic phenotypic changes of brain slice microglia over time, after plating in culture. Mechanical damage associated with slice preparation prompted an initial period of inflammation, which resolved over time. Based on flow cytometry and gene expression profiling we identified the 2-week timepoint as optimal for investigation of microglia responses to exogenously-applied stimuli as exemplified by treatment-induced neuroinflammatory changes observed in microglia following LPS, TNF and GM-CSF addition to the culture medium. Altogether these findings indicate that brain slice cultures provide an experimental system superior to in vitro culture of microglia as a surrogate to investigate microglia functions, and the impact of soluble factors and cellular context on their physiology.
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Affiliation(s)
- Alex R D Delbridge
- Multiple Sclerosis and Neuroimmunology Research Unit, Biogen, Cambridge, MA, United States.,Biogen Postdoctoral Scientist Program, Biogen, Cambridge, MA, United States
| | - Dann Huh
- Translational Biology, Biogen, Cambridge, MA, United States
| | - Margot Brickelmaier
- Multiple Sclerosis and Neuroimmunology Research Unit, Biogen, Cambridge, MA, United States
| | - Jeremy C Burns
- Multiple Sclerosis and Neuroimmunology Research Unit, Biogen, Cambridge, MA, United States
| | - Chris Roberts
- Translational Biology, Biogen, Cambridge, MA, United States
| | - Ravi Challa
- Translational Biology, Biogen, Cambridge, MA, United States
| | - Naideline Raymond
- Multiple Sclerosis and Neuroimmunology Research Unit, Biogen, Cambridge, MA, United States
| | - Patrick Cullen
- Translational Biology, Biogen, Cambridge, MA, United States
| | | | - Katelin A Ennis
- Genetic and Neurodevelopmental Disorders, Biogen, Cambridge, MA, United States
| | - Mei Liu
- Biogen Postdoctoral Scientist Program, Biogen, Cambridge, MA, United States
| | - Chao Sun
- Biogen Postdoctoral Scientist Program, Biogen, Cambridge, MA, United States
| | - Normand E Allaire
- Biogen Postdoctoral Scientist Program, Biogen, Cambridge, MA, United States
| | - Marianna Foos
- Biogen Postdoctoral Scientist Program, Biogen, Cambridge, MA, United States
| | - Hui-Hsin Tsai
- Multiple Sclerosis and Neuroimmunology Research Unit, Biogen, Cambridge, MA, United States
| | | | - Richard M Ransohoff
- Multiple Sclerosis and Neuroimmunology Research Unit, Biogen, Cambridge, MA, United States
| | - Cherie Butts
- Digital & Quantitative Medicine, Biogen, Cambridge, MA, United States
| | - Michael Mingueneau
- Multiple Sclerosis and Neuroimmunology Research Unit, Biogen, Cambridge, MA, United States
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8
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Fonseca-Fonseca LA, da Silva VDA, Wong-Guerra M, Ramírez-Sánchez J, Yaquis ASP, Ochoa-Rodríguez E, Verdecia-Reyes Y, de Araújo FM, Santana RC, Outeiro TF, Costa SL, Núñez-Figueredo Y. JM-20 protects against 6-hydroxydopamine-induced neurotoxicity in models of Parkinson's disease: Mitochondrial protection and antioxidant properties. Neurotoxicology 2020; 82:89-98. [PMID: 33232743 DOI: 10.1016/j.neuro.2020.11.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 11/13/2020] [Accepted: 11/16/2020] [Indexed: 12/20/2022]
Abstract
We have previously shown that JM-20, a new chemical entity consisting of 1,5-benzodiazepine fused to a dihydropyridine moiety, protects against rotenone-induced neurotoxicity in an experimental model of Parkinson's disease (PD). The aim of this study was to investigate the effect of a novel hybrid molecule, named JM-20, in in vitro and in vivo models of PD induced by 6-hydroxydopamine (6-OHDA). PC-12 cells were exposed to 6-OHDA and treated with JM-20. Protection against mitochondrial damage induced by 6-OHDA was also investigated using isolated rat brain mitochondria. We found that JM-20 protected PC-12 cells against cytotoxicity induced by 6-OHDA and inhibited hydrogen peroxide generation, mitochondrial swelling and membrane potential dissipation. For in vivo experiments, adult male Wistar rats were lesioned in the substantia nigra pars compacta (SNpc) by 6-OHDA administration. JM-20 was orally administered (10, 20 or 40 mg/kg), intragastric via gavage, 24 h after surgery and daily for seven days. Treatment with JM-20 significantly reduced the percentage of motor asymmetry and increased vertical exploration. It improved the redox state of the SNpc and the striatal tissue of these animals. Also, JM-20 reduced glial fibrillary acidic protein overexpression and increased tyrosine hydroxylase-positive cell number, both in SNpc. Altogether, these results demonstrate that JM-20 is a potential neuroprotective agent against 6-OHDA-induced damage in both in vitro and in vivo models. The mechanism underlying JM-20 neuroprotection against 6-OHDA appears to be associated with the control of oxidative injury and mitochondrial impairment.
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Affiliation(s)
- Luis Arturo Fonseca-Fonseca
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Víctor Diogenes Amaral da Silva
- Laboratório de Neuroquímica e Biologia Celular, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Av. Reitor Miguel Calmon s/n, Vale do Canela, CEP 41100-100, Salvador, Bahia, Brazil
| | - Maylin Wong-Guerra
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Jeney Ramírez-Sánchez
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Alejandro Saúl Padrón Yaquis
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Estael Ochoa-Rodríguez
- Laboratorio de Síntesis Orgánica de La Facultad de Química de La Universidad de La Habana (Zapata s/n entre G y Carlitos Aguirre, Vedado Plaza de la Revolución, CP 10400, La Habana, Cuba
| | - Yamila Verdecia-Reyes
- Laboratorio de Síntesis Orgánica de La Facultad de Química de La Universidad de La Habana (Zapata s/n entre G y Carlitos Aguirre, Vedado Plaza de la Revolución, CP 10400, La Habana, Cuba
| | - Fillipe Mendes de Araújo
- Laboratório de Neuroquímica e Biologia Celular, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Av. Reitor Miguel Calmon s/n, Vale do Canela, CEP 41100-100, Salvador, Bahia, Brazil
| | - Rejane Conceição Santana
- Laboratório de Neurociências, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Av. Reitor Miguel Calmon s/n, Vale do Canela, CEP 41100-100, Salvador, Bahia, Brazil
| | - Tiago Fleming Outeiro
- Department of Experimental Neurodegeneration, Center for Biostructural Imaging of Neurodegeneration, University Medical Center Gottingen, Göttingen, Germany; Max Planck Institute for Experimental Medicine, Goettingen, Germany; Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Framlington Place, Newcastle Upon Tyne, NE2 4HH, UK
| | - Silvia Lima Costa
- Laboratório de Neuroquímica e Biologia Celular, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Av. Reitor Miguel Calmon s/n, Vale do Canela, CEP 41100-100, Salvador, Bahia, Brazil.
| | - Yanier Núñez-Figueredo
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba.
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9
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Garrido-Suárez BB, Garrido G, Castro-Labrada M, Merino N, Valdés O, Pardo Z, Ochoa-Rodríguez E, Verdecia-Reyes Y, Delgado-Hernández R, Godoy-Figueiredo J, Ferreira SH. Anti-hypernociceptive and anti-inflammatory effects of JM-20: A novel hybrid neuroprotective compound. Brain Res Bull 2020; 165:185-197. [PMID: 33096198 DOI: 10.1016/j.brainresbull.2020.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 10/05/2020] [Accepted: 10/06/2020] [Indexed: 12/18/2022]
Abstract
The present study examines the possible effect of the novel hybrid molecule JM-20 (3-ethoxycarbonyl-2-methyl-4-(2-nitrophenyl)-411-dihydro-1H-pyrido[2,3-b] [1,5] benzodiazepine) on pain-related behaviours in a persistent pain model (5% formalin test) and in the neutrophil migration events during the inflammatory process. It further introduces JM-20 in a chronic constriction injury (CCI) model to clarify the possible subjacent mechanisms with its consequent clinical relevance. A single administration of JM-20 (20 or 40 mg/kg, per os [p.o.]) decreased licking/biting exclusively in the tonic phase of the formalin test in a GABA/benzodiazepine (BZD) receptor antagonist flumazenil-sensitive manner. JM-20 reduced in vivo neutrophil migration, rolling and adhesion to the endothelium induced by intraperitoneal administration of carrageenan in mice. In addition, plasma extravasation and tumour necrosis factor alpha production in the peritoneal fluid were decreased. Treatment with JM-20 (20 mg/kg, p.o.) for 7 days after CCI reduced mechanical hypersensitivity in a NG-monomethyl-l-arginine (L-NMMA)/methylene blue/glibenclamide-sensitive manner. Histopathological signs of Wallerian degeneration (WD) of the sciatic nerve were also attenuated, as well as interleukin-1 beta release in the spinal cord. The nitrate/nitrite concentration was increased centrally and did not show differences at the peripheral nerve level. The findings of this study suggest JM-20 can decrease persistent pain. A transient activity of its BDZ portion on nociceptive pathways mediated by GABA/BDZ receptors in association with its anti-inflammatory properties could be at least partially involved in this effect. JM-20 decreased CCI-induced mechanical hypersensitivity via the l-arginine/nitric oxide (NO)/cyclic GMP-sensitive ATP-sensitive potassium channel pathway. Its neuroprotective ability by preventing WD could be implicated in its anti-neuropathic mechanisms.
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Affiliation(s)
- Bárbara B Garrido-Suárez
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, No. 1605 Boyeros y Puentes Grandes, CP, 10600, La Habana, Cuba.
| | - Gabino Garrido
- Departamento de Ciencias Farmacéuticas, Facultad de Ciencias, Edificio Ñ3, Universidad Católica del Norte, Angamos, 0610, Antofagasta, Chile.
| | - Marian Castro-Labrada
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, No. 1605 Boyeros y Puentes Grandes, CP, 10600, La Habana, Cuba
| | - Nelson Merino
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, No. 1605 Boyeros y Puentes Grandes, CP, 10600, La Habana, Cuba
| | - Odalys Valdés
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, No. 1605 Boyeros y Puentes Grandes, CP, 10600, La Habana, Cuba
| | - Zenia Pardo
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, No. 1605 Boyeros y Puentes Grandes, CP, 10600, La Habana, Cuba
| | - Estael Ochoa-Rodríguez
- Laboratorio de Síntesis Orgánica de La Facultad de Química de La Universidad de La Habana, Zapata s/n entre G y Carlitos Aguirre, Vedado Plaza de la Revolución, CP, 10400, La Habana, Cuba
| | - Yamila Verdecia-Reyes
- Laboratorio de Síntesis Orgánica de La Facultad de Química de La Universidad de La Habana, Zapata s/n entre G y Carlitos Aguirre, Vedado Plaza de la Revolución, CP, 10400, La Habana, Cuba
| | - René Delgado-Hernández
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, No. 1605 Boyeros y Puentes Grandes, CP, 10600, La Habana, Cuba
| | - Jozi Godoy-Figueiredo
- Department of Pharmacology, Faculty of Medicine of Ribeirão Preto University of São Paulo, Avenida Bandeirantes, 3900, 14049-900, Ribeirão Preto, SP, Brazil
| | - Sergio H Ferreira
- Department of Pharmacology, Faculty of Medicine of Ribeirão Preto University of São Paulo, Avenida Bandeirantes, 3900, 14049-900, Ribeirão Preto, SP, Brazil
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10
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Simões-Pires EN, Ferreira ST, Linden R. Roles of glutamate receptors in a novel in vitro model of early, comorbid cerebrovascular, and Alzheimer's diseases. J Neurochem 2020; 156:539-552. [PMID: 32683713 DOI: 10.1111/jnc.15129] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 07/13/2020] [Accepted: 07/13/2020] [Indexed: 11/28/2022]
Abstract
Systemic multimorbidity is highly prevalent in the elderly and, remarkably, coexisting neuropathological markers of Alzheimer's (AD) and cerebrovascular (CVD) diseases are found at autopsy in most brains of patients clinically diagnosed as AD. Little is known on neurodegeneration peculiar to comorbidities, especially at early stages when pathogenesis may propagate at subclinical levels. We developed a novel in vitro model of comorbid CVD/AD in organotypic hippocampal cultures, by combining oxygen-glucose deprivation (OGD) and exposure to amyloid-Aβ oligomers (AβOs), both applied at levels subtoxic to neurons when used in isolation. We focused on synaptic proteins and the roles of glutamate receptors, which have been implicated in many basic and clinical approaches to either CVD or AD. Subtoxic insults by OGD and AβOs synergized to reduce levels of synaptophysin (SYP) and PSD-95 without cell death, while effects of antagonists of either metabotropic or ionotropic glutamate receptors were distinct from reports in models of isolated CVD or AD. In particular, modulation of glutamate receptors differentially impacted SYP and PSD-95, and antagonists of a single receptor subtype had distinct effects when either isolated or combined. Our findings highlight the complexity of CVD/AD comorbidity, help understand variable responses to glutamate receptor antagonists in patients diagnosed with AD and may contribute to future development of therapeutics based on investigation of the pattern of progressive comorbidity.
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Affiliation(s)
| | - Sergio T Ferreira
- Instituto de Biofísica Carlos Chagas Filho, UFRJ, Rio de Janeiro, Brazil.,Instituto de Bioquímica Médica Leopoldo de Meis, UFRJ, Rio de Janeiro, Brazil
| | - Rafael Linden
- Instituto de Biofísica Carlos Chagas Filho, UFRJ, Rio de Janeiro, Brazil
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11
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Zhang LM, Zhang DX, Zhao XC, Sun W. RETRACTED ARTICLE: Erythropoietin Rescues Primary Rat Cortical Neurons by Altering the Nrf2:Bach1 Ratio: Roles of Extracellular Signal-Regulated Kinase 1/2. Neurochem Res 2020; 45:1244. [PMID: 28083849 DOI: 10.1007/s11064-017-2174-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 12/31/2016] [Accepted: 01/03/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Li-Min Zhang
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou, China.
| | - Dong-Xue Zhang
- Department of Gerontology, Cangzhou Central Hospital, Cangzhou, China
| | - Xiao-Chun Zhao
- Department of Anesthesiology, Shengjing Hospital, China Medical University, Shenyang, China
| | - Wenbo Sun
- Department of Anesthesiology, Cangzhou Central Hospital, Cangzhou, China
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12
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D'Avila da Silva F, Nogara PA, Ochoa-Rodríguez E, Nuñez-Figueredo Y, Wong-Guerra M, Rosemberg DB, Rocha JBTD. Molecular docking and in vitro evaluation of a new hybrid molecule (JM-20) on cholinesterase activity from different sources. Biochimie 2019; 168:297-306. [PMID: 31770565 DOI: 10.1016/j.biochi.2019.11.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 11/20/2019] [Indexed: 10/25/2022]
Abstract
The main function of AChE is the hydrolysis of the neurotransmitter acetylcholine (ACh) at the neuromuscular and in cholinergic brain synapses. In some pathologies, loss of cholinergic neurons may be associated with a deficiency of ACh in specific brain areas. Consequently, the study of new safe drugs that inhibit AChE is important, because they can increase ACh levels in the synaptic cleft without adverse effects. Here, we evaluated the effects of JM-20 (a benzodiazepine-dihydropyridine hybrid molecule) on cholinesterase (ChE) activities from distinct sources (AChE from Electrophorus electricus (EeAChE), human erythrocyte membranes (HsAChE (ghost)), total erythrocyte (HsAChE (erythrocyte)) and BChE from plasma (HsBChE) and purified enzyme from the horse (EcBChE)). Kinetic parameters were determined in the presence of 0.05-1.6 mM of substrate concentration. The interactions ChEs with JM-20 were performed using molecular docking simulations. JM-20 inhibited all tested AChE but not BChE. The IC50 values were 123 nM ± 0.2 (EeAChE), 158 nM ± 0.1 (ghost HsAChE), and 172 nM ± 0.2 (erythrocytic HsAChE). JM-20 caused a mixed type of inhibition (it altered Km and Vmax of AChE). The molecular docking indicated the binding poses and the most plausible active isomer of JM-20. Besides giving important data for future drug design, our results help us understand the mode of action of JM-20 as a specific inhibitor of AChE enzymes.
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Affiliation(s)
- Fernanda D'Avila da Silva
- Programa de Pós-graduação Em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Pablo Andrei Nogara
- Programa de Pós-graduação Em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - Estael Ochoa-Rodríguez
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, Nº 1605 Boyeros y Puentes Grandes, CP10600, La Habana, Cuba
| | - Yanier Nuñez-Figueredo
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, Nº 1605 Boyeros y Puentes Grandes, CP10600, La Habana, Cuba
| | - Maylin Wong-Guerra
- Centro de Investigación y Desarrollo de Medicamentos, Ave 26, Nº 1605 Boyeros y Puentes Grandes, CP10600, La Habana, Cuba
| | - Denis Broock Rosemberg
- Programa de Pós-graduação Em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil
| | - João Batista Teixeira da Rocha
- Programa de Pós-graduação Em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil.
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13
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Wong-Guerra M, Jiménez-Martin J, Fonseca-Fonseca LA, Ramírez-Sánchez J, Montano-Peguero Y, Rocha JB, D Avila F, de Assis AM, Souza DO, Pardo-Andreu GL, Del Valle RMS, Lopez GA, Martínez OV, García NM, Mondelo-Rodríguez A, Padrón-Yaquis AS, Nuñez-Figueredo Y. JM-20 protects memory acquisition and consolidation on scopolamine model of cognitive impairment. Neurol Res 2019; 41:385-398. [PMID: 30821663 DOI: 10.1080/01616412.2019.1573285] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE JM-20, a novel hybrid synthetic molecule, has been reported to have antioxidant, mitoprotective, anti-excitotoxic, anti-apoptotic and anti-inflammatory properties. However, the neuroprotective effect of JM-20 against memory impairment in preclinical AD-like models has not been analyzed. The aim of this study was to evaluate the potential neuroprotection of JM-20 that preserves essential memory process from cholinergic dysfunction and other molecular damages. METHODS The effects of JM-20 on scopolamine (1 mg/kg)-induced cognitive disorders were studied. Male Wistar rats (220-230 g) were treated with JM-20 and/or scopolamine, and behavioral tasks were performed. The AChE activity, superoxide dismutase activity, catalase activity, MDA and T-SH level on brain tissue were determined by spectrophotometric methods. Mitochondrial functionality parameters were measured after behavioral tests. Histological analyses on hippocampus and prefrontal cortex were processed with hematoxylin and eosin, and neuronal and axonal damage were determined. RESULTS The behavioral, biochemical and histopathological studies revealed that oral pre-treatment with JM-20 (8 mg/kg) significantly attenuated the scopolamine-induced memory deficits, mitochondrial malfunction, oxidative stress, and prevented AChE hyperactivity probably due to specific inhibition of AChE enzyme. It was also observed marked histological protection on hippocampal and prefrontal-cortex regions. CONCLUSIONS The multimodal action of this molecule could mediate the memory protection here observed and suggest that it may modulate different pathological aspects of memory deficits associated with AD in humans.
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Affiliation(s)
- Maylin Wong-Guerra
- a Laboratorio de Neurofarmacología Molecular , Centro de Investigación y Desarrollo de Medicamentos , La Habana , Cuba
| | - Javier Jiménez-Martin
- b Department of Physiology, Otago School of Medical Sciences , University of Otago , Dunedin , New Zealand
| | - Luis Arturo Fonseca-Fonseca
- a Laboratorio de Neurofarmacología Molecular , Centro de Investigación y Desarrollo de Medicamentos , La Habana , Cuba
| | - Jeney Ramírez-Sánchez
- a Laboratorio de Neurofarmacología Molecular , Centro de Investigación y Desarrollo de Medicamentos , La Habana , Cuba
| | - Yanay Montano-Peguero
- a Laboratorio de Neurofarmacología Molecular , Centro de Investigación y Desarrollo de Medicamentos , La Habana , Cuba
| | - Joao Batista Rocha
- c Departamento de Bioquímica e Biologia Molecular, Centro de Ciencias Naturales y Exactas , Universidad Federal de Santa Maria , Santa Maria , Brasil
| | - Fernanda D Avila
- c Departamento de Bioquímica e Biologia Molecular, Centro de Ciencias Naturales y Exactas , Universidad Federal de Santa Maria , Santa Maria , Brasil
| | - Adriano M de Assis
- d Departamento de Bioquímica, PPG em Ciencias Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde , Universidade Federal do Rio Grande do Sul , Porto Alegre , Brasil
| | - Diogo Onofre Souza
- d Departamento de Bioquímica, PPG em Ciencias Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde , Universidade Federal do Rio Grande do Sul , Porto Alegre , Brasil
| | - Gilberto L Pardo-Andreu
- e Centro de Estudio para las Investigaciones y Evaluaciones Biológicas, Instituto de Farmacia y Alimentos , Universidad de La Habana , La Habana , Cuba
| | | | - Guillermo Aparicio Lopez
- a Laboratorio de Neurofarmacología Molecular , Centro de Investigación y Desarrollo de Medicamentos , La Habana , Cuba
| | - Odalys Valdés Martínez
- a Laboratorio de Neurofarmacología Molecular , Centro de Investigación y Desarrollo de Medicamentos , La Habana , Cuba
| | - Nelson Merino García
- a Laboratorio de Neurofarmacología Molecular , Centro de Investigación y Desarrollo de Medicamentos , La Habana , Cuba
| | - Abel Mondelo-Rodríguez
- a Laboratorio de Neurofarmacología Molecular , Centro de Investigación y Desarrollo de Medicamentos , La Habana , Cuba
| | - Alejandro Saúl Padrón-Yaquis
- a Laboratorio de Neurofarmacología Molecular , Centro de Investigación y Desarrollo de Medicamentos , La Habana , Cuba
| | - Yanier Nuñez-Figueredo
- a Laboratorio de Neurofarmacología Molecular , Centro de Investigación y Desarrollo de Medicamentos , La Habana , Cuba
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14
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Fonseca-Fonseca LA, Wong-Guerra M, Ramírez-Sánchez J, Montano-Peguero Y, Padrón Yaquis AS, Rodríguez AM, da Silva VDA, Costa SL, Pardo-Andreu GL, Núñez-Figueredo Y. JM-20, a novel hybrid molecule, protects against rotenone-induced neurotoxicity in experimental model of Parkinson's disease. Neurosci Lett 2018; 690:29-35. [PMID: 30304707 DOI: 10.1016/j.neulet.2018.10.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/24/2018] [Accepted: 10/05/2018] [Indexed: 12/21/2022]
Abstract
Oxidative stress and mitochondrial dysfunction are two pathophysiological factors often associated with the neurodegenerative process involved in Parkinson's disease (PD). The aim of this study was to investigate the effects of a novel hybrid molecule, named JM-20, in different in vitro and in vivo models of PD induced by rotenone. To perform in vitro studies, SHSY-5Y cells were exposed to rotenone and/or treated with JM-20. To perform in vivo studies male Wistar rats were intoxicated with rotenone (2.5 mg/kg) via intraperitoneal injection and/or treated with JM-20 (40 mg/kg) administered via oral (for 25 days, both treatment). Rats were evaluated for global motor activity by measurement of locomotor activity. In addition, the effects on mortality, general behavior and redox parameters were also investigated. JM-20 protected SHSY-5Y cells against rotenone-induced cytotoxicity, evidenced by a significant diminution of cell death. In in vivo studies, JM-20 prevented rotenone-induced vertical exploration and locomotion frequency reductions, moreover prevented body weight loss and mortality induced by rotenone. It also improved the redox state of rotenone-exposured animals by increasing superoxide dismutase and catalase activities, total tissue-SH levels and decreasing malondialdehyde concentrations. Finally, JM-20 inhibited spontaneous mitochondrial swelling and membrane potential dissipation in isolated rats brain mitochondria. These results demonstrate that JM-20 is a potential neuroprotective agent against rotenone-induced damage in both in vitro and in vivo models, resulting in reduced neuronal oxidative injury and protection of mitochondria from impairment.
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Affiliation(s)
- Luis Arturo Fonseca-Fonseca
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Maylin Wong-Guerra
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Jeney Ramírez-Sánchez
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Yanay Montano-Peguero
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Alejandro Saúl Padrón Yaquis
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Abel Mondelo Rodríguez
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba
| | - Víctor Diógenes Amaral da Silva
- Laboratório de Neuroquímica e Biologia Celular, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Av. Reitor Miguel Calmon s/n, Vale do Canela, CEP 41100-100, Salvador, Bahia, Brazil
| | - Silvia Lima Costa
- Laboratório de Neuroquímica e Biologia Celular, Instituto de Ciências da Saúde, Universidade Federal da Bahia (UFBA), Av. Reitor Miguel Calmon s/n, Vale do Canela, CEP 41100-100, Salvador, Bahia, Brazil
| | - Gilberto L Pardo-Andreu
- Centro de Estudio para las Investigaciones y Evaluaciones Biológicas, Instituto de Farmacia y Alimentos, Universidad de La Habana, Ave 23, No. 21425 e/214 y 222, La Coronela, La Lisa, CP 13600, Ciudad Habana, Cuba
| | - Yanier Núñez-Figueredo
- Centro de Investigación y Desarrollo de Medicamentos (CIDEM), Ave 26, No. 1605 Boyeros y Puentes Grandes, CP 10600, La Habana, Cuba.
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15
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Rana AK, Singh D. Targeting glycogen synthase kinase-3 for oxidative stress and neuroinflammation: Opportunities, challenges and future directions for cerebral stroke management. Neuropharmacology 2018; 139:124-136. [DOI: 10.1016/j.neuropharm.2018.07.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/02/2018] [Accepted: 07/05/2018] [Indexed: 12/15/2022]
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Yin Y, Liu D, Tian D. Salidroside prevents hydroperoxide-induced oxidative stress and apoptosis in retinal pigment epithelium cells. Exp Ther Med 2018; 16:2363-2368. [PMID: 30210588 PMCID: PMC6122584 DOI: 10.3892/etm.2018.6494] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 06/29/2018] [Indexed: 11/06/2022] Open
Abstract
Salidroside (SAL) is the major pharmacologically active constituent of Rhodiola rosea, which possesses a wide range of pharmacological functions, including anti-aging, anti-inflammatory, antioxidant, anticancer and neuroprotective activities. However, the effects and mechanisms of SAL on oxidative stress in retinal pigment epithelial (RPE) cells exposed to hydrogen peroxide (H2O2) remain unclear. The present study investigated the protective effects of SAL and the underlying mechanisms against H2O2-induced oxidative stress in human RPE cells. ARPE-19 cells were treated with various doses of SAL for 24 h and then exposed to 200 µM H2O2 for 24 h. Cell viability was analyzed by a MTT assay, and the intracellular levels of reactive oxygen species were measured using CellROX orange reagent. Cell apoptosis was analyzed by annexin V/propidium iodide double staining, followed by flow cytometry. The levels of B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein, phospho (p)-protein kinase B (Akt), Akt, p-glycogen synthase kinase (GSK)-3β and GSK-3β were evaluated using western blotting. The results demonstrated that SAL markedly attenuated H2O2-induced loss of cell viability. SAL also ameliorated H2O2-induced oxidative stress and cell apoptosis in RPE cells. In addition, pretreatment with SAL significantly increased the phosphorylation levels of Akt and GSK-3β in H2O2-treated ARPE-19 cells. In conclusion, the present study demonstrated that SAL protected RPE cells against H2O2-induced cell injury through the activation of the Akt/GSK-3β signaling pathway. This suggests that SAL may be a potential therapeutic strategy for the treatment of age-related macular degeneration.
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Affiliation(s)
- Yan Yin
- Department of Ophthalmology, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
| | - Dejie Liu
- Department of Ophthalmology, Yantai Yeda Hospital, Yantai, Shandong 264006, P.R. China
| | - Donghua Tian
- Department of Ophthalmology, Jining No. 1 People's Hospital, Jining, Shandong 272011, P.R. China
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He M, Zhang Y, Xie F, Dou X, Han M, Zhang H. Role of PI3K/Akt/NF-κB and GSK-3β pathways in the rat model of cardiopulmonary bypass-related lung injury. Biomed Pharmacother 2018; 106:747-754. [PMID: 29990867 DOI: 10.1016/j.biopha.2018.06.125] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 06/11/2018] [Accepted: 06/21/2018] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Apoptosis is a cellular mechanism contributing to cardiac surgery using cardiopulmonary bypass (CPB)-induced lung injury. The ubiquitous PI3K/Akt pathway regulates proliferation, apoptosis and differentiation by controlling a broad range of target proteins including NF-κB and GSK-3β. The roles of the PI3K/Akt/NF-κB and PI3K/Akt/GSK-3β pathways in CPB-related lung injury are unclear. METHODS Seventy-two male Sprague-Dawley rats were assigned into sham, CPB, Wortmannin (Wtn) and insulin-like growth factor-I (IGF-I) groups (n = 18, each). Six subjects per group were evaluated at each of three time points: Prior to CPB (T1); opening of the left hilus pulmonis (T2); and 90 min after CPB (T3). Arterial blood specimens were obtained at each time point to test respiratory and oxygenation indices. Left lung tissues were processed for H&E and TUNEL staining. Western blot was employed to evaluate protein levels and activities of Akt, phospho-Akt (p-Akt), GSK-3β, phospho-GSK-3β (p-GSK-3β) and nuclear NF-κB. RESULTS Lung ischemia/reperfusion and CPB caused notable lung injury, as evidenced by lung functional decline and pathological deterioration, accompanied by increases in apoptosis and expression levels of p-Akt, p-GSK-3β and nuclear NF-κB in lungs (all P < 0.05 vs. Sham). At T3, Wtn-treated CPB subjects showed worsened lung function and pathological lung structures, as well as apoptosis in lungs (all P < 0.05 vs. CPB); additionally, Wtn inhibited Akt phosphorylation and slightly, but significantly increased expression of nuclear NF-κB (both P < 0.001 vs. CPB). Conversely, treatment of subjects with IGF-I increased Akt phosphorylation (P < 0.001 vs. CPB), inhibited expression of nuclear NF-κB (P = 0.008 vs. CPB), improved lung function and tissue morphology (both P < 0.05 vs. CPB), and reduced apoptosis in lungs (P < 0.001 vs. CPB). Neither Wtn nor IGF-I did alter GSK-3β phosphorylation levels (P = 0.836 and P = 0.669 vs. CPB, respectively). CONCLUSION The PI3K/Akt/NF-κB pathway played a role in CPB-related lung injury, possibly through mediating apoptosis in lungs. GSK-3β, a signaling effector that also participated in CPB-induced apoptosis in lungs, but was not regulated by the PI3K/Akt pathway in this context.
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Affiliation(s)
- Miao He
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China; Department of Anesthesiology, Affiliated Hospital of Chengdu University, Chengdu, 610081, China
| | - Yu Zhang
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, 563000, China
| | - Fei Xie
- Guizhou Key Laboratory of Anesthesia and Organ Protection, Zunyi Medical University, Zunyi, 563000, China
| | - Xuejiao Dou
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Ming Han
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Hong Zhang
- Department of Anesthesiology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China.
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18
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Neuroimmunology Research. A Report from the Cuban Network of Neuroimmunology. Behav Sci (Basel) 2018; 8:bs8050047. [PMID: 29738432 PMCID: PMC5981241 DOI: 10.3390/bs8050047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/23/2018] [Accepted: 04/25/2018] [Indexed: 11/17/2022] Open
Abstract
Neuroimmunology can be traced back to the XIX century through the descriptions of some of the disease’s models (e.g., multiple sclerosis and Guillain Barret syndrome, amongst others). The diagnostic tools are based in the cerebrospinal fluid (CSF) analysis developed by Quincke or in the development of neuroimmunotherapy with the earlier expression in Pasteur’s vaccine for rabies. Nevertheless, this field, which began to become delineated as an independent research area in the 1940s, has evolved as an innovative and integrative field at the shared edges of neurosciences, immunology, and related clinical and research areas, which are currently becoming a major concern for neuroscience and indeed for all of the scientific community linked to it. The workshop focused on several topics: (1) the molecular mechanisms of immunoregulation in health and neurological diseases, (like multiple sclerosis, autism, ataxias, epilepsy, Alzheimer and Parkinson’s disease); (2) the use of animal models for neurodegenerative diseases (ataxia, fronto-temporal dementia/amyotrophic lateral sclerosis, ataxia-telangiectasia); (3) the results of new interventional technologies in neurology, with a special interest in the implementation of surgical techniques and the management of drug-resistant temporal lobe epilepsy; (4) the use of non-invasive brain stimulation in neurodevelopmental disorders; as well as (5) the efficacy of neuroprotective molecules in neurodegenerative diseases. This paper summarizes the highlights of the symposium.
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JM-20 Treatment After MCAO Reduced Astrocyte Reactivity and Neuronal Death on Peri-infarct Regions of the Rat Brain. Mol Neurobiol 2018; 56:502-512. [DOI: 10.1007/s12035-018-1087-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 04/12/2018] [Indexed: 02/06/2023]
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20
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Nuñez-Figueredo Y, Ramírez-Sánchez J, Pardo Andreu GL, Ochoa-Rodríguez E, Verdecia-Reyes Y, Souza DO. Multi-targeting effects of a new synthetic molecule (JM-20) in experimental models of cerebral ischemia. Pharmacol Rep 2018; 70:699-704. [PMID: 29933207 DOI: 10.1016/j.pharep.2018.02.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 01/15/2018] [Accepted: 02/09/2018] [Indexed: 11/30/2022]
Abstract
Ischemic stroke is a major cause of death and disability worldwide. Thrombolysis by tissue plasminogen activator is the only pharmacological treatment approved for clinical practice, but has a narrow therapeutic window and poor efficacy when the cell death cascade is activated. Numerous drugs that are thought to protect neurons against injury have previously failed in human trials despite showing efficacy in experimental models of stroke. Herein, we reviewed the main pre-clinical results of the neuroprotective effects of JM-20, a new hybrid molecule, against brain ischemia. JM-20 appears to protect the brain from ischemic damage by interfering with several elements of the ischemic cascade: antiexcitotoxic, anticalcic, antioxidant, antiapoptotic, and anti-inflammatory. Its ability to protect not only neurons but also glial cells together with its ability to target and preserve mitochondrial function makes JM-20 a promising molecule that may be able to shield the whole neurovascular unit. The multimodal and multi-cell action of JM-20 may explain the high degree of protection observed in a rat model of brain ischemia, as assayed through histological (hematoxylin-eosin, and luxol fast blue staining), neurochemical (glutamate and aspartate levels in cerebrospinal fluid), mitochondrial functionality and behavioural (neurological scale) analysis at doses of 4 and 8mg/kg. Furthermore, the wide therapeutic window of JM-20 of 8h also suggests that this molecule could be of potential interest in situations where brain perfusion is compromised.
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Affiliation(s)
| | | | - Gilberto L Pardo Andreu
- Centro de Estudio para las Investigaciones y Evaluaciones Biológicas, Instituto de Farmacia y Alimentos, Universidad de La Habana, La Habana, Cuba.
| | - Estael Ochoa-Rodríguez
- Laboratorio de Síntesis Orgánica de La Facultad de Química de La Universidad de La Habana (Zapata s/n entre G y Carlitos Aguirre, La Habana, Cuba
| | - Yamila Verdecia-Reyes
- Laboratorio de Síntesis Orgánica de La Facultad de Química de La Universidad de La Habana (Zapata s/n entre G y Carlitos Aguirre, La Habana, Cuba
| | - Diogo O Souza
- Departamento de Bioquímica, PPG em Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Wang P, Cao J, Liu N, Ma L, Zhou X, Zhang H, Wang Y. Protective Effects of Edaravone in Adult Rats with Surgery and Lipopolysaccharide Administration-Induced Cognitive Function Impairment. PLoS One 2016; 11:e0153708. [PMID: 27116382 PMCID: PMC4846078 DOI: 10.1371/journal.pone.0153708] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Accepted: 04/03/2016] [Indexed: 11/19/2022] Open
Abstract
Postoperative cognitive dysfunction (POCD) is a clinical syndrome characterized by cognitive declines in patients after surgery. Previous studies have suggested that surgery contributed to such impairment. It has been proven that neuroinflammation may exacerbate surgery-induced cognitive impairment in aged rats. The free radical scavenger edaravone has high blood brain barrier permeability, and was demonstrated to effectively remove free radicals from the brain and alleviate the development of POCD in patients undergoing carotid endarterectomy, suggesting its potential role in preventing POCD. For this reason, this study was designed to determine whether edaravone is protective against POCD through its inhibitory effects on inflammatory cytokines and oxidative stress. First, Sprague Dawley adult male rats were administered 3 mg/kg edaravone intraperitoneally after undergoing a unilateral nephrectomy combined with lipopolysaccharide injection. Second, behavioral parameters related to cognitive function were recorded by fear conditioning and Morris Water Maze tests. Last, superoxide dismutase activities and malondialdehyde levels were measured in the hippocampi and prefrontal cortex on postoperative days 3 and 7, and microglial (Iba1) activation, p-Akt and p-mTOR protein expression, and synaptic function (synapsin 1) were also examined 3 and 7 days after surgery. Rats that underwent surgery plus lipopolysaccharide administration showed significant impairments in spatial and working memory, accompanied by significant reductions in hippocampal-dependent and independent fear responses. All impairments were attenuated by treatment with edaravone. Moreover, an abnormal decrease in superoxide dismutase activation, abnormal increase in malondialdehyde levels, significant increase in microglial reactivity, downregulation of p-Akt and p-mTOR protein expression, and a statistically significant decrease in synapsin-1 were observed in the hippocampi and prefrontal cortices of rats at different time points after surgery. All mentioned abnormal changes were totally or partially reversed by edaravone. To our knowledge, few reports have shown greater protective effects of edaravone on POCD induced by surgery plus lipopolysaccharide administration from its anti-oxidative stress and anti-inflammatory effects, as well as maintenance of Akt/mTOR signal pathway activation; these might be closely related to the therapeutic effects of edaravone. Our research demonstrates the potential use of edaravone in the treatment of POCD.
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Affiliation(s)
- Peiqi Wang
- Department of Anesthesiology and Operation Center, Chinese PLA, General Hospital, Beijing, China
| | - Jiangbei Cao
- Department of Anesthesiology and Operation Center, Chinese PLA, General Hospital, Beijing, China
| | - Na Liu
- Department of Anesthesiology and Operation Center, Chinese PLA, General Hospital, Beijing, China
- Department of Anesthesiology, Affiliated Hospital of Chengde Medical University, Chengde, China
| | - Li Ma
- Department of Anesthesiology and Operation Center, Chinese PLA, General Hospital, Beijing, China
- Department of Anesthesiology, Beijing Military General Hospital of the Chinese People’s Liberation Army, Beijing, China
| | - Xueyue Zhou
- Department of Anesthesiology and Operation Center, Chinese PLA, General Hospital, Beijing, China
| | - Hong Zhang
- Department of Anesthesiology and Operation Center, Chinese PLA, General Hospital, Beijing, China
- * E-mail: (HZ); (YW)
| | - Yongan Wang
- State Key Laboratory of Toxicology and Medical Countermeasures, Academy of Military Medical Sciences, Beijing, China
- * E-mail: (HZ); (YW)
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