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Juliani PZ, Rodrigues T, Bressan GN, Camponogara C, Oliveira SM, Brucker N, Fachinetto R. Effects of association between resveratrol and ketamine on behavioral and biochemical analysis in mice. J Neural Transm (Vienna) 2024; 131:971-986. [PMID: 38874765 DOI: 10.1007/s00702-024-02793-z] [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: 11/13/2023] [Accepted: 06/01/2024] [Indexed: 06/15/2024]
Abstract
Resveratrol (3,5,4'-trihydroxy-trans-stilbene), a phenol commonly found in grapes and wine, has been associated as protective in experimental models involving alterations in different neurotransmitter systems. However, studies are reporting that resveratrol could have adverse effects. This study evaluated if the association of a low dose of ketamine and resveratrol could induce behavioral manifestations associated with biochemical alterations. Moreover, the effects of treatment with resveratrol and/or ketamine on monoamine oxidase (MAO) activity, oxidative stress markers, and IL-6 levels in the brain were also investigated. Male Swiss mice received a low dose of ketamine (20 mg/kg) for 14 consecutive days, and resveratrol (10, 30, or 100 mg/kg) from day 8 up to day 14 of the experimental period, intraperitoneally. Locomotor, stereotyped behavior, Y-maze, novel recognition object test (NORT), and social interaction were quantified as well as ex vivo analysis of MAO activity, IL-6 levels, and oxidative stress markers (TBARS and total thiol levels) in brain tissues. Ketamine per se reduced the number of bouts of stereotyped behavior on day 8 of the experimental period. Resveratrol per se reduced the locomotor and exploratory activity in the open field, the time of exploration of new objects in the NORT, MAO-A activity in the striatum and increased the IL-6 levels in the cortex. These effects were attenuated when the mice were co-treated with ketamine and resveratrol. There was a decrease in MAO-A activity in the cortex of mice treated with ketamine + resveratrol 100 mg/kg. No significant alterations were found in oxidative stress markers. Resveratrol does not appear to cause summative effects with ketamine on behavioral alterations. However, the effect of resveratrol per se, mainly on locomotor and exploratory activity, should be better investigated.
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Affiliation(s)
- Patrícia Zorzi Juliani
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Talita Rodrigues
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Getulio Nicola Bressan
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Camila Camponogara
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Sara Marchesan Oliveira
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Natália Brucker
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Roselei Fachinetto
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
- Programa de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
- Centro de Ciências da Saúde, Departamento de Fisiologia e Farmacologia, Santa Maria, RS, 97105-900, Brazil.
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Banerjee C, Barman R, Darshani P, Pillai M, Ahuja S, Mondal R, Pragadheesh VS, Chakraborty J, Kumar D. α-Viniferin, a dietary phytochemical, inhibits Monoamine oxidase and alleviates Parkinson's disease associated behavioral deficits in a mice model. Neurochem Int 2024; 174:105698. [PMID: 38364939 DOI: 10.1016/j.neuint.2024.105698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/31/2024] [Accepted: 02/13/2024] [Indexed: 02/18/2024]
Abstract
Parkinson's disease (PD) is one of the most prevalent age-related neurodegenerative disorders. Behavioral complexities worsen over time due to progressive dopaminergic (DArgic) neuronal loss at substantia nigra region of brain. Available treatments typically aim to increase dopamine (DA) levels at striatum. DA is degraded by Monoamine oxidase (MAO), thus dietary phytochemicals with MAO inhibitory properties can contribute to elevate DA levels and reduce the ailment. Characterization of naturally occurring dietary MAO inhibitors is inadequate. Based on available knowledge, we selected different classes of molecules and conducted a screening process to assess their potential as MAO inhibitors. The compounds mostly derived from food sources, broadly belonging to triterpenoids (ursane, oleanane and hopane), alkaloid, polyphenolics, monoterpenoids, alkylbenzene, phenylpropanoid and aromatic alcohol classes. Among all the molecules, highest level of MAO inhibition is offered by α-viniferin, a resveratrol trimer. Cell viability, mitochondrial morphology and reactive oxygen species (ROS) generation remained unaltered by 50 μM α-viniferin treatment in-vitro. Toxicity studies in Drosophila showed unchanged gross neuronal morphology, ROS level, motor activity or long-term survival. α-Viniferin inhibited MAO in mice brain and elevated striatal DA levels. PD-related akinesia and cataleptic behavior were attenuated by α-viniferin due to increase in striatal DA. Our study implies that α-viniferin can be used as an adjunct phytotherapeutic agent for mitigating PD-related behavioral deterioration.
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Affiliation(s)
- Chayan Banerjee
- Cell Biology and Physiology Division, CSIR- Indian Institute of Chemical Biology, Kolkata- 700032, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
| | - Raju Barman
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata- 700032, India
| | - Priya Darshani
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata- 700032, India
| | - Meghana Pillai
- Cell Biology and Physiology Division, CSIR- Indian Institute of Chemical Biology, Kolkata- 700032, India
| | - Sanchi Ahuja
- Cell Biology and Physiology Division, CSIR- Indian Institute of Chemical Biology, Kolkata- 700032, India
| | - Rupsha Mondal
- Cell Biology and Physiology Division, CSIR- Indian Institute of Chemical Biology, Kolkata- 700032, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
| | - V S Pragadheesh
- CSIR-Central Institute of Medicinal and Aromatic Plants, Research Centre, Bengaluru- 560065, India
| | - Joy Chakraborty
- Cell Biology and Physiology Division, CSIR- Indian Institute of Chemical Biology, Kolkata- 700032, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India.
| | - Deepak Kumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India; Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata- 700032, India.
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Banerjee C, Nandy S, Chakraborty J, Kumar D. Myricitrin - a flavonoid isolated from the Indian olive tree ( Elaeocarpus floribundus) - inhibits Monoamine oxidase in the brain and elevates striatal dopamine levels: therapeutic implications against Parkinson's disease. Food Funct 2022; 13:6545-6559. [PMID: 35647619 DOI: 10.1039/d2fo00734g] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Flavonoids exhibit several biological activities including inhibition of Monoamine oxidase (MAO), an enzyme that metabolizes several neurotransmitters. Thus, MAO inhibitors are well included in traditional therapeutic practices to fine-tune neuromotor behavior. This study aims to isolate flavonoids from a less explored plant of northeast India, named Indian olive (Elaeocarpus floribundus; Ef, family Elaeocarpaceae), and evaluate their MAO inhibitory properties. Four flavonoids from Ef leaf extract, namely, myricitrin, mearnsitrin, myricetin, and mearnsetin, are taken into consideration. Spectrofluorimetric assay is carried out to determine the MAO inhibitory properties. Next, in vitro and in vivo toxicity studies are performed in neuronal cell line and Drosophila, respectively. Furthermore, MAO inhibition by the selected compounds and their effect on dopamine levels are examined in the mouse brain. We evaluated the therapeutic potential in a mouse model of Parkinson's disease (PD) in terms of behavior, neurotransmitter levels, and dopaminergic neuronal loss. In an in vitro setup, all four compounds inhibited total MAO, whereas myricitrin exhibited some selectivity against MAO-B at 100 μM. Myricitrin and mearnsitrin exhibited no toxicity, in vitro or in vivo. However, only myricitrin inhibited MAO in the mouse brain and elevated dopamine levels. Myricitrin was able to attenuate motor incoordination in the mouse model of PD and improved dopamine levels in the striatum.
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Affiliation(s)
- Chayan Banerjee
- Department of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology-TRUE campus, Kolkata, India. .,Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, Ghaziabad, India
| | - Sumangal Nandy
- Department of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology-TRUE campus, Kolkata, India.
| | - Joy Chakraborty
- Department of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology-TRUE campus, Kolkata, India. .,Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, Ghaziabad, India
| | - Deepak Kumar
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Jadavpur, Kolkata, India. .,Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, Ghaziabad, India
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Vitisin A, a Resveratrol Tetramer, Improves Scopolamine-Induced Impaired Learning and Memory Functions in Amnesiac ICR Mice. Biomedicines 2022; 10:biomedicines10020273. [PMID: 35203483 PMCID: PMC8869728 DOI: 10.3390/biomedicines10020273] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 01/14/2022] [Accepted: 01/24/2022] [Indexed: 12/10/2022] Open
Abstract
Resveratrol has been reported to exhibit neuroprotective activities in vitro and in vivo. However, little is known about resveratrol tetramers of hopeaphenol, vitisin A, and vitisin B with the same molecular mass in the improvement of degenerative disorders. In this study, two 95% ethanol extracts (95EE) from stem parts of Vitis thunbergii Sieb. & Zucc. (VT-95EE) and from the root (R) parts of Vitis thunbergii var. taiwaniana (VTT-R-95EE) showed comparable acetylcholinesterase (AChE) inhibitory activities. It was found that VT-95EE and VTT-R-95EE showed different distribution patterns of identified resveratrol and resveratrol tetramers of hopeaphenol, vitisin A, and vitisin B based on the analyses of HPLC chromatographic profiles. The hopeaphenol, vitisin A, and vitisin B, showed AChE and monoamine oxidase-B inhibitions in a dose-dependent manner, among which vitisin B and vitisin A exhibited much better activities than those of resveratrol, and had neuroprotective activities against methylglyoxal-induced SH-SY5Y cell deaths. The scopolamine-induced amnesiac ICR mice treated with VT-95EE and its ethyl acetate-partitioned fraction (VT-95EE-EA) at doses of 200 and 400 mg/kg, or vitisin A at a dose of 40 mg/kg, but not vitisin B (40 mg/kg), were shown significantly to improve the impaired learning behaviors by passive avoidance tests compared to those in the control without drug treatments (p < 0.05). Compared to mice in the control group, the brain extracts in the vitisin A-treated mice or donepezil-treated mice showed significant reductions in AChE activities and malondialdehyde levels (p < 0.05), and elevated the reduced protein expressions of brain-derived neurotrophic factor (BDNF) and BDNF receptor, tropomyosin receptor kinase B (TrkB). These results revealed that vitisin A was the active constituent in the VT-95EE and VTT-95EE, and the VT medicinal plant and that the endemic variety of VTT has potential in developing functional foods for an unmet medical need for neurodegenerative disorders.
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Sacilotto N, Dessanti P, Lufino MMP, Ortega A, Rodríguez-Gimeno A, Salas J, Maes T, Buesa C, Mascaró C, Soliva R. Comprehensive in Vitro Characterization of the LSD1 Small Molecule Inhibitor Class in Oncology. ACS Pharmacol Transl Sci 2021; 4:1818-1834. [PMID: 34927013 DOI: 10.1021/acsptsci.1c00223] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Indexed: 01/10/2023]
Abstract
Lysine-specific demethylase 1 (LSD1 or KDM1A) is a chromatin modifying enzyme playing a key role in the cell cycle and cell differentiation and proliferation through the demethylation of histones and nonhistone substrates. In addition to its enzymatic activity, LSD1 plays a fundamental scaffolding role as part of transcription silencing complexes such as rest co-repressor (CoREST) and nucleosome remodeling and deacetylase (NuRD). A host of classical amine oxidase inhibitors such as tranylcypromine, pargyline, and phenelzine together with LSD1 tool compounds such as SP-2509 and GSK-LSD1 have been extensively utilized in LSD1 mechanistic cancer studies. Additionally, several optimized new chemical entities have reached clinical trials in oncology such as ORY-1001 (iadademstat), GSK2879552, SP-2577 (seclidemstat), IMG-7289 (bomedemstat), INCB059872, and CC-90011 (pulrodemstat). Despite this, no single study exists that characterizes them all under the same experimental conditions, preventing a clear interpretation of published results. Herein, we characterize the whole LSD1 small molecule compound class as inhibitors of LSD1 catalytic activity, disruptors of SNAIL/GFI1 (SNAG)-scaffolding protein-protein interactions, inducers of cell differentiation, and potential anticancer treatments for hematological and solid tumors to yield an updated, unified perspective of this field. Our results highlight significant differences in potency and selectivity among the clinical compounds with iadademstat being the most potent and reveal that most of the tool compounds have very low activity and selectivity, suggesting some conclusions derived from their use should be taken with caution.
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Affiliation(s)
- Natalia Sacilotto
- Oryzon Genomics S.A., Carrer Sant Ferran 74, Cornellà de Llobregat, 08940 Barcelona, Spain
| | - Paola Dessanti
- Oryzon Genomics S.A., Carrer Sant Ferran 74, Cornellà de Llobregat, 08940 Barcelona, Spain
| | - Michele M P Lufino
- Oryzon Genomics S.A., Carrer Sant Ferran 74, Cornellà de Llobregat, 08940 Barcelona, Spain
| | - Alberto Ortega
- Oryzon Genomics S.A., Carrer Sant Ferran 74, Cornellà de Llobregat, 08940 Barcelona, Spain
| | | | - Jordi Salas
- Oryzon Genomics S.A., Carrer Sant Ferran 74, Cornellà de Llobregat, 08940 Barcelona, Spain
| | - Tamara Maes
- Oryzon Genomics S.A., Carrer Sant Ferran 74, Cornellà de Llobregat, 08940 Barcelona, Spain
| | - Carlos Buesa
- Oryzon Genomics S.A., Carrer Sant Ferran 74, Cornellà de Llobregat, 08940 Barcelona, Spain
| | - Cristina Mascaró
- Oryzon Genomics S.A., Carrer Sant Ferran 74, Cornellà de Llobregat, 08940 Barcelona, Spain
| | - Robert Soliva
- Oryzon Genomics S.A., Carrer Sant Ferran 74, Cornellà de Llobregat, 08940 Barcelona, Spain
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Krum BN, de Freitas CM, Busanello A, Schaffer LF, Fachinetto R. Ex vivo and in vitro inhibitory potential of Kava extract on monoamine oxidase B activity in mice. J Tradit Complement Med 2021; 12:115-122. [PMID: 35528470 PMCID: PMC9072822 DOI: 10.1016/j.jtcme.2021.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/10/2021] [Accepted: 07/13/2021] [Indexed: 01/13/2023] Open
Abstract
Background and aim Experimental procedure Results Conclusion Kava extract confirmed anxiolytic-like effect in mice. Kava extract reduced MAO-B activity in cortex and in the region containing substantia nigra in mice. Kava extract inhibited reversibly the MAO-B activity in vitro.
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Karuppagounder SS, Uthaythas S, Govindarajulu M, Ramesh S, Parameshwaran K, Dhanasekaran M. Caffeine, a natural methylxanthine nutraceutical, exerts dopaminergic neuroprotection. Neurochem Int 2021; 148:105066. [PMID: 34004240 DOI: 10.1016/j.neuint.2021.105066] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 04/29/2021] [Accepted: 05/02/2021] [Indexed: 10/21/2022]
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder that affects more than 10 million people worldwide. Oxidative stress and mitochondrial dysfunction play a significant role in altering the homeostasis of energy production and free radical generation. Current PD therapies are focused on reducing the cardinal symptoms rather than preventing disease progression in the patients. Adenosine A2A receptor (A2A R) antagonist (Istradephylline) combined with levodopa shows a promising therapy for PD. In animal studies, caffeine administration showed to improve motor functions and neuroprotective effect in the neurons. Caffeine is probably the most extensively used psychoactive substance. In this current study, we investigated the neuroprotective effect of caffeine against 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced neurodegeneration. Here, we demonstrate that caffeine improves behavioral and neurotransmitter recovery against MPTP-induced toxicity. Caffeine restores endogenous antioxidant levels and suppresses neuroinflammation. Our finding suggests that the blockage of A2AR is a promising disease-modifying therapy for PD. Target engagement strategies could be more beneficial in preventing disease progression rather than symptomatic reliefs in PD patients.
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Affiliation(s)
- Senthilkumar S Karuppagounder
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, 36849, USA.
| | - Subramaniam Uthaythas
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, 36849, USA
| | - Manoj Govindarajulu
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, 36849, USA
| | - Sindhu Ramesh
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, 36849, USA
| | - Koodeswaran Parameshwaran
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, 36849, USA
| | - Muralikrishnan Dhanasekaran
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, 36849, USA.
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Krum BN, Molz de Freitas C, Chiapinotto Ceretta AP, Barbosa CP, de Moraes Reis E, Scussel R, da Silva Córneo E, Machado-de-Ávila RA, Boligon AA, Fachinetto R. Kava decreases the stereotyped behavior induced by amphetamine in mice. JOURNAL OF ETHNOPHARMACOLOGY 2021; 265:113293. [PMID: 32841698 DOI: 10.1016/j.jep.2020.113293] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/31/2020] [Accepted: 08/13/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Kava extract (Piper methysticum) is a phytotherapic mainly used for the treatment of anxiety. Although the reported effects of Kava drinking improving psychotic symptoms of patients when it was introduced to relieve anxiety in aboriginal communities, its effects on models of psychosis-like symptoms are not investigated. AIM OF THE STUDY To investigate the effects of Kava extract on behavioral changes induced by amphetamine (AMPH) and its possible relation with alterations in monoamine oxidase (MAO) activity. MATERIALS AND METHODS Mice received vehicle or Kava extract by gavage and, 2 h after vehicle or AMPH intraperitoneally. Twenty-five minutes after AMPH administration, behavioral (elevated plus maze, open field, stereotyped behavior, social interaction and Y maze) and biochemical tests (MAO-A and MAO-B activity in cortex, hippocampus and striatum) were sequentially evaluated. RESULTS Kava extract exhibited anxiolytic effects in plus maze test, increased the locomotor activity of mice in open field test and decreased MAO-A (in cortex) and MAO-B (in hippocampus) activity of mice. Kava extract prevented the effects of AMPH on stereotyped behavior and, the association between Kava/AMPH increased the number of entries into arms in Y maze test as well as MAO-B activity in striatum. However, Kava extract did not prevent hyperlocomotion induced by AMPH in open field test. The social interaction was not modified by Kava extract and/or AMPH. CONCLUSION The results showed that Kava extract decreased the stereotyped behavior induced by AMPH at the same dose that promotes anxiolytic effects, which could be useful to minimize the psychotic symptoms in patients.
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Affiliation(s)
- Bárbara Nunes Krum
- Programa de Pós-Graduação Em Farmacologia, Universidade Federal de Santa Maria, RS, Brazil.
| | - Catiuscia Molz de Freitas
- Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, RS, Brazil.
| | | | - Caroline Pilecco Barbosa
- Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, RS, Brazil.
| | - Elizete de Moraes Reis
- Programa de Pós-Graduação Em Farmacologia, Universidade Federal de Santa Maria, RS, Brazil.
| | - Rahisa Scussel
- Programa de Pós-Graduação Em Ciências da Saúde, Universidade Do Extremo Sul Catarinense, Criciúma, SC, Brazil.
| | - Emily da Silva Córneo
- Curso de Biomedicina, Universidade Do Extremo Sul Catarinense, Criciúma, SC, Brazil.
| | | | - Aline Augusti Boligon
- Programa de Pós-Graduação Em Ciências Farmacêuticas, Universidade Federal de Santa Maria, RS, Brazil.
| | - Roselei Fachinetto
- Programa de Pós-Graduação Em Farmacologia, Universidade Federal de Santa Maria, RS, Brazil; Programa de Pós-Graduação Em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, RS, Brazil.
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Reinheimer JB, Bressan GN, de Freitas CM, Ceretta APC, Krum BN, Nogara PA, Rodrigues T, Schwerz JP, da Rocha JBT, Fachinetto R. Effects of CATECHIN on reserpine-induced vacuous chewing movements: behavioral and biochemical analysis. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2020; 393:2439-2452. [PMID: 32725283 DOI: 10.1007/s00210-020-01923-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 06/10/2020] [Indexed: 10/23/2022]
Abstract
This study evaluated the effect of (+)-catechin, a polyphenolic compound, on orofacial dyskinesia (OD) induced by reserpine in mice. The potential modulation of monoaminoxidase (MAO) activity, tyrosine hydroxylase (TH) and glutamic acid decarboxylase (GAD67) immunoreactivity by catechin were used as biochemical endpoints. The interaction of catechin with MAO-A and MAO-B was determined in vitro and in silico. The effects of catechin on OD induced by reserpine (1 mg/kg for 4 days, subcutaneously) in male Swiss mice were examined. After, catechin (10, 50 or 100 mg/kg, intraperitoneally) or its vehicle were given for another 20 days. On the 6th, 8th, 15th and 26th day, vacuous chewing movements (VCMs) and locomotor activity were quantified. Biochemical markers (MAO activity, TH and GAD67 immunoreactivity) were evaluated in brain structures. In vitro, catechin inhibited both MAO isoforms at concentrations of 0.34 and 1.03 mM being completely reversible for MAO-A and partially reversible for MAO-B. Molecular docking indicated that the catechin bound in the active site of MAO-A, while in the MAO-B it interacted with the surface of the enzyme in an allosteric site. In vivo, reserpine increased the VCMs and decreased the locomotor activity. Catechin (10 mg/kg), decreased the number of VCMs in the 8th day in mice pre-treated with reserpine without altering other behavioral response. Ex vivo, the MAO activity and TH and GAD67 immunoreactivity were not altered by the treatments. Catechin demonstrated a modest and transitory protective effect in a model of OD in mice.
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Affiliation(s)
- Jeane Binotto Reinheimer
- ªPrograma de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Getulio Nicola Bressan
- ªPrograma de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Catiuscia Molz de Freitas
- ªPrograma de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Ana Paula Chiapinotto Ceretta
- Programa de Pós-graduação em Farmacologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, 97105-900, RS, Brazil
| | - Bárbara Nunes Krum
- Programa de Pós-graduação em Farmacologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, 97105-900, RS, Brazil
| | - Pablo Andrei Nogara
- ªPrograma de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Talita Rodrigues
- Programa de Pós-graduação em Farmacologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, 97105-900, RS, Brazil
| | | | - João Batista Teixeira da Rocha
- ªPrograma de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Roselei Fachinetto
- ªPrograma de Pós-Graduação em Ciências Biológicas: Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
- Programa de Pós-graduação em Farmacologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria, Santa Maria, 97105-900, RS, Brazil.
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Yang Z, Huang X, Lai W, Tang Y, Liu J, Wang Y, Chu K, Brown J, Hong G. Synthesis and identification of a novel derivative of salidroside as a selective, competitive inhibitor of monoamine oxidase B with enhanced neuroprotective properties. Eur J Med Chem 2020; 209:112935. [PMID: 33097301 DOI: 10.1016/j.ejmech.2020.112935] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 10/05/2020] [Accepted: 10/09/2020] [Indexed: 12/11/2022]
Abstract
Salidroside [(2R,3S,4S,5R,6R)-2-(hydroxymethyl)-6-(4-hydroxyphenethoxy)tetrahy-dro-2H-pyran-3,4,5-triol] is an antioxidant, anti-inflammatory and neuroprotective agent, but its drug-like properties are unoptimized and its mechanism of actions is uncertain. We synthesized twenty-six novel derivatives of salidroside and examined them in CoCl2-treated PC12 cells using MTT assay. pOBz, synthesized by esterifying the phenolic hydroxyl group of salidroside with benzoyl chloride, was one of five derivatives that were more cytoprotective than salidroside, with an EC50 of 0.038 μM versus 0.30 μM for salidroside. pOBz was also more lipophilic, with log P of 1.44 versus -0.89 for salidroside. Reverse virtual docking predicted that pOBz would bind strongly with monoamine oxidase (MAO) B by occupying its entrance and substrate cavities, and by interacting with the inter-cavity gating residue Ile199 and Tyr435 of the substrate cavity. Enzymatic studies confirmed that pOBz competitively inhibited the activity of purified human MAO-B (Ki = 0.041 μM versus Ki = 0.92 μM for salidroside), and pOBz was highly selective for MAO-B over MAO-A. In vivo, pOBz inhibited cerebral MAO activity after middle cerebral artery occlusion with reperfusion in rats, and it reduced cerebral infarct volume, improved neurological function and NeuN expression, and inhibited complement C3 expression and apoptosis. Our results suggest that pOBz is a structurally novel type of competitive and selective MAO-B inhibitor, with potent neuroprotective properties after cerebral ischemia-reperfusion injury in rats.
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Affiliation(s)
- Zelin Yang
- Centre of Biomedical Research & Development, Fujian University of Traditional Chinese Medicine, No. 1 Huatou Road, Minhou Shangjie, Fuzhou, China
| | - Xin Huang
- Centre of Biomedical Research & Development, Fujian University of Traditional Chinese Medicine, No. 1 Huatou Road, Minhou Shangjie, Fuzhou, China
| | - Wenfang Lai
- Centre of Biomedical Research & Development, Fujian University of Traditional Chinese Medicine, No. 1 Huatou Road, Minhou Shangjie, Fuzhou, China
| | - Yuheng Tang
- Centre of Biomedical Research & Development, Fujian University of Traditional Chinese Medicine, No. 1 Huatou Road, Minhou Shangjie, Fuzhou, China
| | - Junjie Liu
- Centre of Biomedical Research & Development, Fujian University of Traditional Chinese Medicine, No. 1 Huatou Road, Minhou Shangjie, Fuzhou, China
| | - Yingzheng Wang
- Centre of Biomedical Research & Development, Fujian University of Traditional Chinese Medicine, No. 1 Huatou Road, Minhou Shangjie, Fuzhou, China
| | - Kedan Chu
- Centre of Biomedical Research & Development, Fujian University of Traditional Chinese Medicine, No. 1 Huatou Road, Minhou Shangjie, Fuzhou, China
| | - John Brown
- Centre of Biomedical Research & Development, Fujian University of Traditional Chinese Medicine, No. 1 Huatou Road, Minhou Shangjie, Fuzhou, China
| | - Guizhu Hong
- Centre of Biomedical Research & Development, Fujian University of Traditional Chinese Medicine, No. 1 Huatou Road, Minhou Shangjie, Fuzhou, China.
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11
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Majrashi M, Fujihashi A, Almaghrabi M, Fadan M, Fahoury E, Ramesh S, Govindarajulu M, Beamon H, Bradford CN, Bolden-Tiller O, Dhanasekaran M. Augmented oxidative stress and reduced mitochondrial function in ageing goat testis. Vet Med Sci 2020; 6:766-774. [PMID: 32628344 PMCID: PMC7738717 DOI: 10.1002/vms3.296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 04/30/2020] [Accepted: 05/04/2020] [Indexed: 01/05/2023] Open
Abstract
Recently, there is a significant increase in the commercial use of goat products. Nevertheless, there are very few reports on the characterization of redox biomarkers and mitochondrial function in the goat testis. Therefore, in this study we studied the markers of oxidative stress and mitochondrial functions in the goat testis during the process of ageing. Alterations in the markers of oxidative stress/redox biomarkers (contents of reactive oxygen species, nitrite, lipid peroxide, protein carbonyl, glutathione and activities of glutathione peroxidase, monoamine oxidase) and mitochondrial function (Complex‐I and Complex‐IV activities) were elucidated during the process of ageing. Augmented oxidative stress and decreased mitochondrial function were prominent during ageing in the goat testis. Ageing can lead to induction of oxidative stress and decreased production of ATP; however, the prooxidants generated must be effectively removed from the body by the innate antioxidant defence system to minimize the damage to the host tissue. Conversely, the antioxidants cannot completely scavenge the excessive amount of reactive oxygen species produced during ageing or pathological conditions leading to significant cell death and tissue damage. Thus, the use of effective and potent antioxidants in the feed could significantly reduce oxidative stress and improve mitochondrial function, resulting in enriched goat health.
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Affiliation(s)
- Mohammed Majrashi
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA.,Department of Pharmacology, Faculty of Medicine, University of Jeddah, Jeddah, KSA
| | - Ayaka Fujihashi
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Mohammed Almaghrabi
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Maali Fadan
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Eddie Fahoury
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Sindhu Ramesh
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Manoj Govindarajulu
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Haley Beamon
- Department of Agricultural and Environmental Sciences, Tuskegee University, Tuskegee, AL, USA
| | | | - Olga Bolden-Tiller
- Department of Agricultural and Environmental Sciences, Tuskegee University, Tuskegee, AL, USA
| | - Muralikrishnan Dhanasekaran
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
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12
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Lee HJ, Dhodary B, Lee JY, An JP, Ryu YK, Kim KS, Lee CH, Oh WK. Dereplication of Components Coupled with HPLC-qTOF-MS in the Active Fraction of Humulus japonicus and It's Protective Effects against Parkinson's Disease Mouse Model. Molecules 2019; 24:E1435. [PMID: 30979037 PMCID: PMC6480934 DOI: 10.3390/molecules24071435] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/05/2019] [Accepted: 04/10/2019] [Indexed: 12/13/2022] Open
Abstract
Humulus japonicus is an annual plant belonging to the Cannabacea family, and it has been traditionally used to treat pulmonary tuberculosis, dysentery, chronic colitis, and hypertension. We investigated the active components against Parkinson's disease from H. japonicus fraction (HJF) using high performance liquid chromatography (HPLC) coupled with quadruple-time-of-flight mass spectroscopy (qTOF-MS) and NMR. Fourteen compounds were isolated from HJF, including one new compound, using HPLC-qTOF-MS and NMR. The major compounds of HJF were luteolin-7-O-glucoside and apigenin-7-O-glucoside, and there was approximately 12.57- and 9.68-folds increase in the contents of these flavonoids compared to those of the 70% EtOH extract. Apigenin and luteolin exhibited the strongest inhibitory effects on monoamine oxidase (MAO) B enzyme activity. In animal studies, limb-use behavior was significantly reduced by unilateral 6-OHDA lesion and ipsilateral rotations. These results indicated that oral administration of 300 mg/kg HJF resulted in the improvement of motor asymmetry and motor impairment in unilateral 6-OHDA-lesioned mice. HJF, including active components leads to an improvement of motor behavior in a Parkinson's disease mouse model.
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Affiliation(s)
- Hee Ju Lee
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
- Natural Product Informatics Research Center, Korea Institute of Science and Technology, Gangneung 25451, Korea.
| | - Basanta Dhodary
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Ju Yong Lee
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Jin-Pyo An
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Young-Kyoung Ryu
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea.
| | - Kyoung-Shim Kim
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea.
| | - Chul-Ho Lee
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea.
| | - Won Keun Oh
- Korea Bioactive Natural Material Bank, Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
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13
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da Silva Schmitz I, Schaffer LF, Busanello A, de Freitas CM, Fachinetto R, Peroza LR. Isoflavones prevent oxidative stress and inhibit the activity of the enzyme monoamine oxidase in vitro. Mol Biol Rep 2019; 46:2285-2292. [PMID: 30756334 DOI: 10.1007/s11033-019-04684-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 02/07/2019] [Indexed: 02/07/2023]
Abstract
Oxidative stress occurs due to an imbalance between antioxidant defenses and pro-oxidant agents in brain. This condition has been associated to the pathogenesis of several brain diseases; therefore, increasing the use of compounds that exert antioxidant activity. Thus, the objective of this study was to evaluate, in vitro, the effect of isoflavones in: (1) lipid peroxidation, catalase activity and thiol groups in the presence of pro-oxidants: sodium nitroprusside or Fe2+/EDTA complex in rat brain homogenates; (2) the activity of the enzyme monoamine oxidase (MAO). As a result, the isoflavones reduced lipid peroxidation in a manner dependent on the concentration and protected against the reduction of catalase activity as well as the induced thiol oxidation in brain tissue. In addition, isoflavones inhibited MAO activity (MAO-A and MAO-B). Taken together, our results showed that isoflavones avoided oxidative stress and decreased the MAO activity, suggesting a promissory use in the treatment of neurodegenerative diseases.
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Affiliation(s)
| | - Larissa Finger Schaffer
- Curso de Biomedicina, Universidade Franciscana (UFN), Santa Maria, Rio Grande do Sul, Brazil
| | - Alcindo Busanello
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brazil
| | - Catiuscia Molz de Freitas
- Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brazil
| | - Roselei Fachinetto
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brazil.,Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, Brazil
| | - Luis Ricardo Peroza
- Mestrado em Ciências da Saúde e da Vida, Universidade Franciscana (UFN), Santa Maria, Rio Grande do Sul, 97010-032, Brazil.
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14
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Silva de Sá I, Peron AP, Leimann FV, Bressan GN, Krum BN, Fachinetto R, Pinela J, Calhelha RC, Barreiro MF, Ferreira ICFR, Gonçalves OH, Ineu RP. In vitro and in vivo evaluation of enzymatic and antioxidant activity, cytotoxicity and genotoxicity of curcumin-loaded solid dispersions. Food Chem Toxicol 2018; 125:29-37. [PMID: 30592967 DOI: 10.1016/j.fct.2018.12.037] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 12/18/2018] [Accepted: 12/22/2018] [Indexed: 11/24/2022]
Abstract
Curcumin, the main bioactive polyphenolic compound in Curcuma longa L. rhizomes has a wide range of bioactive properties. Curcumin presents low solubility in water and thus limited bioavailability, which decreases its applicability. In this study, cytotoxic effects of curcumin solid dispersions (CurSD) were evaluated against tumor (breast adenocarcinoma and lung, cervical and hepatocellular carcinoma) and non-tumor (PLP2) cells, while cytotoxic and genotoxic effects were evaluated in Allium cepa. The effect of the CurSD on the acetylcholinesterase (AChE), butyrylcholinesterase (BChE), glutathione S-transferase (GST), and monoamine oxidase (MAO A-B) enzymes was determined, as well as its capacity to inhibit the oxidative hemolysis (OxHLIA) and the formation of thiobarbituric acid reactive substances (TBARS). CurSD are constituted by nanoparticles that are readily dispersible in water, and inhibited 24% and 64% of the AChE and BChE activity at 100 μM, respectively. GST activity was inhibited at 30 μM while MAO-A and B activity were inhibited at 100 μM. CurSD showed cytotoxicity against all the tested tumor cell lines without toxic effects for non-tumor cells. No cytotoxic and genotoxic potential was detected with the Allium cepa test. CurSD maintained the characteristics of free curcumin on the in vitro modulation of important enzymes without appreciable toxicity.
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Affiliation(s)
- Igor Silva de Sá
- Post-Graduation Program of Food Technology (PPGTA), Federal University of Technology - Paraná - UTFPR, Campus Campo Mourão, via Rosalina Maria dos Santos, 1233, CEP 87301-899, Caixa Postal: 271, Campo Mourão, PR, Brazil
| | - Ana Paula Peron
- Biodiversity and Nature Conservation Department, Federal University of Technology - Paraná - UTFPR, Campus Campo Mourão, via Rosalina Maria dos Santos, 1233, CEP 87301-899, Caixa Postal: 271, Campo Mourão, PR, Brazil
| | - Fernanda Vitória Leimann
- Post-Graduation Program of Food Technology (PPGTA), Federal University of Technology - Paraná - UTFPR, Campus Campo Mourão, via Rosalina Maria dos Santos, 1233, CEP 87301-899, Caixa Postal: 271, Campo Mourão, PR, Brazil; Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal; Laboratory of Separation and Reaction Engineering, Laboratory of Catalysis and Materials (LSRE-LCM), Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Getúlio Nicola Bressan
- Post-Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria (UFSM), Avenida Roraima n° 1000, 97105-900, Santa Maria, RS, Brazil
| | - Bárbara Nunes Krum
- Post-Graduate Program in Pharmacology, Federal University of Santa Maria (UFSM), Avenida Roraima n° 1000, 97105-900, Santa Maria, RS, Brazil
| | - Roselei Fachinetto
- Post-Graduate Program in Biological Sciences: Toxicological Biochemistry, Federal University of Santa Maria (UFSM), Avenida Roraima n° 1000, 97105-900, Santa Maria, RS, Brazil; Post-Graduate Program in Pharmacology, Federal University of Santa Maria (UFSM), Avenida Roraima n° 1000, 97105-900, Santa Maria, RS, Brazil
| | - José Pinela
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Ricardo Costa Calhelha
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Maria Filomena Barreiro
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal; Laboratory of Separation and Reaction Engineering, Laboratory of Catalysis and Materials (LSRE-LCM), Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Isabel C F R Ferreira
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal.
| | - Odinei Hess Gonçalves
- Post-Graduation Program of Food Technology (PPGTA), Federal University of Technology - Paraná - UTFPR, Campus Campo Mourão, via Rosalina Maria dos Santos, 1233, CEP 87301-899, Caixa Postal: 271, Campo Mourão, PR, Brazil; Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal; Laboratory of Separation and Reaction Engineering, Laboratory of Catalysis and Materials (LSRE-LCM), Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Rafael Porto Ineu
- Post-Graduation Program of Food Technology (PPGTA), Federal University of Technology - Paraná - UTFPR, Campus Campo Mourão, via Rosalina Maria dos Santos, 1233, CEP 87301-899, Caixa Postal: 271, Campo Mourão, PR, Brazil
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15
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Majrashi M, Almaghrabi M, Fadan M, Fujihashi A, Lee W, Deruiter J, Randall Clark C, Dhanasekaran M. Dopaminergic neurotoxic effects of 3-TFMPP derivatives. Life Sci 2018; 209:357-369. [PMID: 30067941 DOI: 10.1016/j.lfs.2018.07.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 07/26/2018] [Accepted: 07/27/2018] [Indexed: 12/18/2022]
Abstract
Designer drugs are synthetically formulated to mimic the psychostimulatory effects of an original controlled/illegal drug of abuse. Designer drugs have similar chemical structure or functional analog as compared to existing controlled psychostimulatory drugs. There is a substantial rise in the production and use of designer drugs globally. Piperazine designer drugs were synthesized as an alternative to MDMA and have shown to induce numerous toxic effects leading to huge health, safety, law enforcement & monetary problems, and lethality. Currently, there are very few studies on the dopaminergic neurotoxicity of 1-(3-trifluoromethylphenyl) piperazine (3-TFMPP) and its derivatives (structural congeners). N27 rat dopaminergic neurons are valid cells to investigate the neurotoxic effects and establish the neurotoxic mechanisms of various substances. In the current study, we studied the time and dose-dependent neurotoxicity mechanisms of dopaminergic neurotoxicity of 3-TFMPP (parent compound) and its derivatives (2-TFMPP, 4-TFMPP). TFMPP derivatives-induced significant neurotoxicity (induced dopaminergic neuronal death. TFMPP derivatives-induced oxidative stress, mitochondrial dysfunction, apoptosis and decreased tyrosine hydroxylase expression. If the use of designer drugs are not strictly regulated and restricted around the world, this can lead to numerous central and peripheral disorders leading to a liability to the current and future society.
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Affiliation(s)
- Mohammed Majrashi
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA; Department of Pharmacology, Faculty of Medicine, University of Jeddah, Jeddah, 23881, Saudi Arabia
| | - Mohammed Almaghrabi
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA; Department of Medicinal Chemistry, Faculty of Pharmacy, Taibah University, AL Medina, KSA
| | - Maali Fadan
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Ayaka Fujihashi
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Wooseok Lee
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Jack Deruiter
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - C Randall Clark
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Muralikrishnan Dhanasekaran
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA.
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16
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Singh A, Verma P, Balaji G, Samantaray S, Mohanakumar KP. Nimodipine, an L-type calcium channel blocker attenuates mitochondrial dysfunctions to protect against 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced Parkinsonism in mice. Neurochem Int 2016; 99:221-232. [PMID: 27395789 DOI: 10.1016/j.neuint.2016.07.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 06/28/2016] [Accepted: 07/05/2016] [Indexed: 12/15/2022]
Abstract
Parkinson's disease (PD), the most common progressive neurodegenerative movement disorder, results from loss of dopaminergic neurons of substantia nigra pars compacta. These neurons exhibit Cav1.3 channel-dependent pacemaking activity. Epidemiological studies suggest reduced risk for PD in population under long-term antihypertensive therapy with L-type calcium channel antagonists. These prompted us to investigate nimodipine, an L-type calcium channel blocker for neuroprotective effect in cellular and animal models of PD. Nimodipine (0.1-10 μM) significantly attenuated 1-methyl-4-phenyl pyridinium ion-induced loss in mitochondrial morphology, mitochondrial membrane potential and increases in intracellular calcium levels in SH-SY5Y neuroblastoma cell line as measured respectively employing Mitotracker green staining, TMRM, and Fura-2 fluorescence, but only a feeble neuroprotective effect was observed in MTT assay. Nimodipine dose-dependently reduced 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced parkinsonian syndromes (akinesia and catalepsy) and loss in swimming ability in Balb/c mice. It attenuated MPTP-induced loss of dopaminergic tyrosine hydroxylase positive neurons in substantia nigra, improved mitochondrial oxygen consumption and inhibited reactive oxygen species production in the striatal mitochondria measured using dichlorodihydrofluorescein fluorescence, but failed to block striatal dopamine depletion. These results point to an involvement of L-type calcium channels in MPTP-induced dopaminergic neuronal death in experimental parkinsonism and more importantly provide evidences for nimodipine to improve mitochondrial integrity and function.
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Affiliation(s)
- Alpana Singh
- Laboratory of Clinical and Experimental Neuroscience, Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology Kolkata, 4, Raja Subodh Mullick Road, Jadavpur, 700032, India
| | - Poonam Verma
- Laboratory of Clinical and Experimental Neuroscience, Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology Kolkata, 4, Raja Subodh Mullick Road, Jadavpur, 700032, India
| | - Gillela Balaji
- Laboratory of Clinical and Experimental Neuroscience, Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology Kolkata, 4, Raja Subodh Mullick Road, Jadavpur, 700032, India
| | - Supriti Samantaray
- Department of Neurosciences, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Kochupurackal P Mohanakumar
- Laboratory of Clinical and Experimental Neuroscience, Division of Cell Biology and Physiology, CSIR-Indian Institute of Chemical Biology Kolkata, 4, Raja Subodh Mullick Road, Jadavpur, 700032, India; Inter University Centre for Biomedical Research & Super Specialty Hospital, Mahatma Gandhi University Campus at Thalappady, Rubber Board PO, Kottayam, 686009, Kerala State, India.
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17
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Thrash-Williams B, Karuppagounder SS, Bhattacharya D, Ahuja M, Suppiramaniam V, Dhanasekaran M. Methamphetamine-induced dopaminergic toxicity prevented owing to the neuroprotective effects of salicylic acid. Life Sci 2016; 154:24-9. [PMID: 26926078 DOI: 10.1016/j.lfs.2016.02.072] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 02/16/2016] [Accepted: 02/19/2016] [Indexed: 11/26/2022]
Abstract
AIMS Methamphetamine (Schedule-II drug, U.S. Drug Enforcement Administration) is one of the most abused illicit drug following cocaine, marijuana, and heroin in the USA. There are numerous health impairments and substantial economic burden caused by methamphetamine abuse. Salicylic acid, potent anti-inflammatory drug and a known neuroprotectant has shown to protect against toxicity-induced by other dopaminergic neurotoxins. Hence, in this study we investigated the neuroprotective effects of salicylic acid against methamphetamine-induced toxicity in mice. MAIN METHODS The current study investigated the effects of sodium salicylate and/or methamphetamine on oxidative stress, monoamine oxidase, mitochondrial complex I & IV activities using spectrophotometric and fluorimetric methods. Behavioral analysis evaluated the effect on movement disorders-induced by methamphetamine. Monoaminergic neurotransmitter levels were evaluated using high pressure liquid chromatography-electrochemical detection. KEY FINDINGS Methamphetamine caused significant generation of reactive oxygen species and decreased complex-I activity leading to dopamine depletion. Striatal dopamine depletion led to significant behavioral changes associated with movement disorders. Sodium salicylate (50 & 100mg/kg) significantly scavenged reactive oxygen species, blocked mitochondrial dysfunction and exhibited neuroprotection against methamphetamine-induced neurotoxicity. In addition, sodium salicylate significantly blocked methamphetamine-induced behavioral changes related to movement abnormalities. SIGNIFICANCE One of the leading causative theories in nigral degeneration associated with movement disorders such as Parkinson's disease is exposure to stimulants, drugs of abuse, insecticide and pesticides. These neurotoxic substances can induce dopaminergic neuronal insult by oxidative stress, apoptosis, mitochondrial dysfunction and inflammation. Salicylic acid due to its antioxidant and anti-inflammatory effects could provide neuroprotection against the stimulants or drugs of abuse.
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Affiliation(s)
- Bessy Thrash-Williams
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | | | - Dwipayan Bhattacharya
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Manuj Ahuja
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Vishnu Suppiramaniam
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA
| | - Muralikrishnan Dhanasekaran
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, USA.
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18
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Palencia G, Garcia E, Osorio-Rico L, Trejo-Solís C, Escamilla-Ramírez A, Sotelo J. Neuroprotective effect of thalidomide on MPTP-induced toxicity. Neurotoxicology 2015; 47:82-7. [PMID: 25724264 DOI: 10.1016/j.neuro.2015.02.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 02/12/2015] [Accepted: 02/17/2015] [Indexed: 01/16/2023]
Abstract
Thalidomide is a sedative with unique pharmacological properties; studies on epilepsy and brain ischemia have shown intense neuroprotective effects. We analyzed the effect of thalidomide treatment on the neurotoxicity caused by the administration of 1-methyl-4-phenyl-1,2,3,6-tetrahidropyridine (MPTP) in mice. Thalidomide was administered at two times; before and after the exposure to MPTP. In both circumstances thalidomide improved the neurotoxicity induced by MPTP as seen by a significant raise of the striatal contents of dopamine and simultaneous decrease of monoamine-oxidase-B (MAO-B). These results indicate that in the experimental model of Parkinson's disease the administration of thalidomide improves the functional damage on the nigrostriatal cell substratum as seen by the production of dopamine. This neuroprotective effect seems to be mediated by inhibition of excitotoxicity. Our results suggest that thalidomide could be investigated as potential adjuvant therapy for Parkinson's disease.
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Affiliation(s)
- Guadalupe Palencia
- Neuroimmunology Unit, National Institute of Neurology and Neurosurgery, Mexico City, Mexico.
| | - Esperanza Garcia
- Neuroimmunology Unit, National Institute of Neurology and Neurosurgery, Mexico City, Mexico.
| | - Laura Osorio-Rico
- Laboratory of Neurochemistry, National Institute of Neurology and Neurosurgery, Mexico City, Mexico.
| | - Cristina Trejo-Solís
- Neuroimmunology Unit, National Institute of Neurology and Neurosurgery, Mexico City, Mexico.
| | - Angel Escamilla-Ramírez
- Neuroimmunology Unit, National Institute of Neurology and Neurosurgery, Mexico City, Mexico.
| | - Julio Sotelo
- Neuroimmunology Unit, National Institute of Neurology and Neurosurgery, Mexico City, Mexico.
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Santillo MF. Inhibition of monoamine oxidase (MAO) by α-ethylphenethylamine and N,α-diethylphenethylamine, two compounds related to dietary supplements. Food Chem Toxicol 2014; 74:265-9. [DOI: 10.1016/j.fct.2014.10.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 10/06/2014] [Accepted: 10/09/2014] [Indexed: 11/16/2022]
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Santillo MF, Liu Y, Ferguson M, Vohra SN, Wiesenfeld PL. Inhibition of monoamine oxidase (MAO) by β-carbolines and their interactions in live neuronal (PC12) and liver (HuH-7 and MH1C1) cells. Toxicol In Vitro 2014; 28:403-10. [DOI: 10.1016/j.tiv.2013.12.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Revised: 12/06/2013] [Accepted: 12/17/2013] [Indexed: 11/15/2022]
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Chakraborty J, Singh R, Dutta D, Naskar A, Rajamma U, Mohanakumar KP. Quercetin improves behavioral deficiencies, restores astrocytes and microglia, and reduces serotonin metabolism in 3-nitropropionic acid-induced rat model of Huntington's Disease. CNS Neurosci Ther 2014; 20:10-9. [PMID: 24188794 PMCID: PMC6493046 DOI: 10.1111/cns.12189] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 09/17/2013] [Accepted: 09/19/2013] [Indexed: 01/18/2023] Open
Abstract
AIM Huntington's disease (HD) is an autosomal dominant disorder, for which clinically available drugs offer only symptomatic relief. These prescription drugs are not free of side effects, and the patients usually suffer from anxiety and depression. We investigated quercetin, a dietary flavonoid with free radical scavenging properties, for its beneficial potential if any, in 3-nitropropionic acid (3-NP)-induced HD in rats where both drugs were administered simultaneously. METHODS Performance of rats on beam balancing, elevated plus maze and gait traits were investigated following 3-NP and/or quercetin treatments for 4 days. Striatal biogenic amine levels and monoamine oxidase activity were assayed. Striatal sections were examined for Cd11B and glial fibrillary acidic protein immunoreactivity, and for evidences of neuronal lesion. RESULTS Quercetin significantly attenuated 3-NP-induced anxiety, motor coordination deficits, and gait despair. While the dopaminergic hyper-metabolism was unaffected, quercetin provided a significant reduction of 3-NP mediated increase in serotonin metabolism. Quercetin failed to affect 3-NP-induced striatal neuronal lesion, but decreased microglial proliferation, and increased astrocyte numbers in the lesion core. CONCLUSION These results taken together suggest that quercetin could be of potential use not only for correcting movement disturbances and anxiety in HD, but also for addressing inflammatory damages.
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Affiliation(s)
- Joy Chakraborty
- Laboratory of Clinical and Experimental NeuroscienceDivision of Cell Biology and PhysiologyCSIR‐Indian Institute of Chemical BiologyKolkataIndia
| | - Raghavendra Singh
- Laboratory of Clinical and Experimental NeuroscienceDivision of Cell Biology and PhysiologyCSIR‐Indian Institute of Chemical BiologyKolkataIndia
| | - Debashis Dutta
- Laboratory of Clinical and Experimental NeuroscienceDivision of Cell Biology and PhysiologyCSIR‐Indian Institute of Chemical BiologyKolkataIndia
| | - Amit Naskar
- Laboratory of Clinical and Experimental NeuroscienceDivision of Cell Biology and PhysiologyCSIR‐Indian Institute of Chemical BiologyKolkataIndia
| | - Usha Rajamma
- Manovikas Biomedical Research and Diagnostic CentreManovikas KendraKolkataIndia
| | - Kochupurackal P. Mohanakumar
- Laboratory of Clinical and Experimental NeuroscienceDivision of Cell Biology and PhysiologyCSIR‐Indian Institute of Chemical BiologyKolkataIndia
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Carradori S, D'Ascenzio M, Chimenti P, Secci D, Bolasco A. Selective MAO-B inhibitors: a lesson from natural products. Mol Divers 2013; 18:219-43. [PMID: 24218136 DOI: 10.1007/s11030-013-9490-6] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 10/21/2013] [Indexed: 12/30/2022]
Abstract
Monoamine oxidases (MAOs) are mitochondrial bound enzymes, which catalyze the oxidative deamination of monoamine neurotransmitters. Inside the brain, MAOs are present in two isoforms: MAO-A and MAO-B. The activity of MAO-B is generally higher in patients affected by neurodegenerative diseases like Alzheimer's and Parkinson's. Therefore, the search for potent and selective MAO-B inhibitors is still a challenge for medicinal chemists. Nature has always been a source of inspiration for the discovery of new lead compounds. Moreover, natural medicine is a major component in all traditional medicine systems. In this review, we present the latest discoveries in the search for selective MAO-B inhibitors from natural sources. For clarity, compounds have been classified on the basis of structural analogy or source: flavonoids, xanthones, tannins, proanthocyanidins, iridoid glucosides, curcumin, alkaloids, cannabinoids, and natural sources extracts. MAO inhibition values reported in the text are not always consistent due to the high variability of MAO sources (bovine, pig, rat brain or liver, and human) and to the heterogeneity of the experimental protocols used.
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Affiliation(s)
- Simone Carradori
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, P.le A. Moro 5, 00185 , Rome, Italy
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Herrera-Mundo N, Sitges M. Vinpocetine and α-tocopherol prevent the increase in DA and oxidative stress induced by 3-NPA in striatum isolated nerve endings. J Neurochem 2012; 124:233-40. [DOI: 10.1111/jnc.12082] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 10/25/2012] [Accepted: 10/26/2012] [Indexed: 11/28/2022]
Affiliation(s)
- Nieves Herrera-Mundo
- Departamento de Biología Celular y Fisiología; Instituto de Investigaciones Biomédicas; Universidad Nacional Autónoma de México; México
| | - María Sitges
- Departamento de Biología Celular y Fisiología; Instituto de Investigaciones Biomédicas; Universidad Nacional Autónoma de México; México
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Ojha RP, Rastogi M, Devi BP, Agrawal A, Dubey GP. Neuroprotective effect of curcuminoids against inflammation-mediated dopaminergic neurodegeneration in the MPTP model of Parkinson's disease. J Neuroimmune Pharmacol 2012; 7:609-18. [PMID: 22527634 DOI: 10.1007/s11481-012-9363-2] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 03/28/2012] [Indexed: 01/09/2023]
Abstract
The present study investigated the neuroprotective effect of curcuminoids, the active polyphenols of Curcuma longa (L.) rhizomes against inflammation-mediated dopaminergic neurodegeneration in the 1-methyl-4-phenyl-1,2,3,6- tetrahydropyridine (MPTP) model of Parkinson's disease (PD). Male C57BL/6 mice were pre-treated with curcuminoids (150 mg/kg/day) for 1 week, followed by four intra-peritoneal (i.p.) injections of MPTP (20 mg/kg) at 2 h intervals with further administration of curcuminoids or deprenyl (3 mg/kg/day) for 2 weeks. Our results show that oral administration of curcuminoids significantly prevented MPTP-mediated depletion of dopamine and tyrosine hydroxylase (TH) immunoreactivity. In-addition, pre-treatment with curcuminoids reversed glial fibrillary acidic protein (GFAP) and inducible nitric oxide synthase (iNOS) protein expression, as well as, reduced pro-inflammatory cytokine and total nitrite generation in the striatum of MPTP-intoxicated mice. Significant improvement in motor performance and gross behavioural activity, as determined by rota-rod and open field tests were also observed. Taken together, our findings suggest that curcuminoids exert a neuroprotective effect against MPTP-induced dopaminergic neurodegeneration through its anti-inflammatory action and thus holds immense potential as a therapeutic candidate for the prevention and management of PD.
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Affiliation(s)
- Rudra P Ojha
- Centre for Advanced Research in Indian System of Medicine (CARISM), SASTRA University, Thanjavur, Tamilnadu, India
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25
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Antiparkinsonian Effects of Aqueous Methanolic Extract of Hyoscyamus niger Seeds Result From its Monoamine Oxidase Inhibitory and Hydroxyl Radical Scavenging Potency. Neurochem Res 2010; 36:177-86. [DOI: 10.1007/s11064-010-0289-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2010] [Indexed: 10/18/2022]
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Ding JC, Huang XB, Wu HY, Chen JZ, Cai MT, Liu MC. Synthesis and biological activities of novel chiral fluorinated β-carboline derivatives. J Heterocycl Chem 2008. [DOI: 10.1002/jhet.5570450635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Thomas B, Saravanan KS, Mohanakumar KP. In vitro and in vivo evidences that antioxidant action contributes to the neuroprotective effects of the neuronal nitric oxide synthase and monoamine oxidase-B inhibitor, 7-nitroindazole. Neurochem Int 2008; 52:990-1001. [DOI: 10.1016/j.neuint.2007.10.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2007] [Revised: 10/11/2007] [Accepted: 10/15/2007] [Indexed: 12/21/2022]
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28
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Samantaray S, Knaryan VH, Butler JT, Ray SK, Banik NL. Spinal cord degeneration in C57BL/6N mice following induction of experimental parkinsonism with MPTP. J Neurochem 2007; 104:1309-20. [PMID: 18036149 DOI: 10.1111/j.1471-4159.2007.05091.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We examined neurodegeneration in spinal cord (SC) and role of such extra-nigral degeneration in MPTP-induced experimental parkinsonism in C57BL/6N mice. HPLC-photodiode array analysis confirmed presence of the active neurotoxin MPP+ in SC after single injection of MPTP (25 mg/kg, i.p.). Mitochondrial enzyme monoamine oxidase-B (MAO-B) responsible for in vivo conversion of MPTP to MPP+ was inhibited in SC by pre-treatment with l-deprenyl, a specific inhibitor of MAO-B. Besides in vitro conversion of MPTP to MPP+ occurred by SC mitochondrial preparation, which was inhibited by l-deprenyl implicating SC as a specific target of MPTP-neurotoxicity. Double immunofluorescent labeling and spectrofluorimetric assay via kynuramine oxidation showed MAO-B expression and activity in SC neurons. Localization of dopamine transporter immunoreactivity in SC along with specific uptake of (3)H-MPP+ by SC synaptosomal preparation further confirmed SC as target of MPTP-neurotoxicity. Compared with control, increased neuronal death on the seventh day in SC of mice injected with MPTP (2 x 25 mg/kg, at 6 h interval) strongly suggested SC degeneration in pre-symptomatic phase of MPTP-induced experimental parkinsonism. Such extra-nigral neurodegeneration in Parkinson's disease indicated novel molecular mechanism preceding nigrostriatal degeneration and suggested designing broad therapeutic intervention for this complex movement disorder.
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Affiliation(s)
- Supriti Samantaray
- Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina 29425, USA
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29
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Pignatello R, Puleo A, Guccione S, Raciti G, Acquaviva R, Campisi A, Ventura CA, Puglisi G. Enhancement of drug affinity for cell membranes by conjugation with lipoamino acids. I. Synthesis and biological evaluation of lipophilic conjugates of tranylcypromine. Eur J Med Chem 2005; 40:1074-9. [PMID: 16126309 DOI: 10.1016/j.ejmech.2005.05.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2005] [Accepted: 05/23/2005] [Indexed: 10/25/2022]
Abstract
Conjugation with lipoamino acids (LAAs) increases the lipophilicity of drug molecules. Because of their amphipatic nature, they also provide the conjugated drugs a 'membrane-like character', capable to facilitate their interaction with and penetration through cell membranes and biological barriers. To study such a feature, our aim is to collect experimental and computational data using a novel series of lipophilic conjugates between a model drug (tranylcypromine (TCP)) and LAA residues containing a short, a medium or a long alkyl side chain (C-4 to C-16), to provide a wide range of lipophilicity. For comparison, a corresponding set of amides of TCP with alkanoic or fatty acids was prepared and characterized. Their in vitro monoamine oxidase inhibitory activity also tested.
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Affiliation(s)
- Rosario Pignatello
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Catania, Viale A. Doria, 6, I-95125 Catania, Italy.
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Zolla L, Timperio AM. Involvement of active oxygen species in protein and oligonucleotide degradation induced by nitrofurans. Biochem Cell Biol 2005; 83:166-75. [PMID: 15864325 DOI: 10.1139/o05-023] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
It is of great interest to know how nitrofurans are mutagenic and clastogenic. In particular, the 3-amino-2-oxazolidone (AOZ) ring, deriving from a cleavage of furazolidone, is not further metabolized and has been found to be part of protein-bound residues in edible tissues of farm animals and these might be released in the stomach of the consumer. The data in this paper show that isoniazide as well as AOZ and 3-amino-5-morpholinomethyl-2-oxazolidinone (AMOZ), the latter deriving from furaltadone, cause irreversible damage to the prosthetic group of enzymes as well as degrade their polypeptide chain and cause fragmentation of the backbone chain of cellular or isolated DNA and RNA. Cellular DNA was degraded into small fragments of 2000 Mb, while rRNA was completely destroyed. Nitrofuran derivatives and hydrazides, in fact, share an N–N moiety, which is assumed to play an essential role in the irreversible damage observed. The key to the molecular mechanisms by which these compounds cause their irreversible effects may lie in oxygen consumption and electron spin resonance measurements, which reveal that both nitrofurans and isoniazide produce oxygen radicals at various degrees of efficiency. AOZ and AMOZ are not metabolized into more reactive metabolites, being themselves able to react with atmospheric oxygen and induce protein and oligonucleotide damage. The reaction does not require metal ions, although their presence will accelerate it.Key words: nitrofurans, active oxygen, furazolidone, DNA degradation, protein fragmentation.
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Affiliation(s)
- Lello Zolla
- Department of Environmental Science, University of Tuscia, Viterbo, Italy.
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31
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Manyam BV, Dhanasekaran M, Hare TA. Neuroprotective effects of the antiparkinson drugMucuna pruriens. Phytother Res 2004; 18:706-12. [PMID: 15478206 DOI: 10.1002/ptr.1514] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Mucuna pruriens possesses significantly higher antiparkinson activity compared with levodopa in the 6-hydroxydopamine (6-OHDA) lesioned rat model of Parkinson's disease. The present study evaluated the neurorestorative effect of Mucuna pruriens cotyledon powder on the nigrostriatal tract of 6-OHDA lesioned rats. Mucuna pruriens cotyledon powder significantly increased the brain mitochondrial complex-I activity but did not affect the total monoamine oxidase activity (in vitro). Unlike synthetic levodopa treatment, Mucuna pruriens cotyledon powder treatment significantly restored the endogenous levodopa, dopamine, norepinephrine and serotonin content in the substantia nigra. Nicotine adenine dinucleotide (NADH) and coenzyme Q-10, that are shown to have a therapeutic benefit in Parkinson's disease, were present in the Mucuna pruriens cotyledon powder. Earlier studies showed that Mucuna pruriens treatment controls the symptoms of Parkinson's disease. This additional finding of a neurorestorative benefit by Mucuna pruriens cotyledon powder on the degenerating dopaminergic neurons in the substantia nigra may be due to increased complex-I activity and the presence of NADH and coenzyme Q-10.
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Affiliation(s)
- Bala V Manyam
- Department of Neurology, Health Science Center College of Medicine, Temple, TX 76508, USA.
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32
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Muralikrishnan D, Samantaray S, Mohanakumar KP. D-deprenyl protects nigrostriatal neurons against 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced dopaminergic neurotoxicity. Synapse 2003; 50:7-13. [PMID: 12872288 DOI: 10.1002/syn.10239] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Selegiline (L-deprenyl) is believed to render protection against l-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-neurotoxicity to a significant extent via a free radical scavenging mechanism, which is independent of its ability to inhibit monoamine oxidase-B (MAO-B) in the brain. We investigated the hydroxyl radical (.OH) scavenging action and neuroprotective effect of D-deprenyl, its less active isomer, in MPTP-induced dopaminergic neurotoxicity in mice to test whether the chemical structure of the molecule or its biological effects contribute to this property. To achieve this goal we studied the effects of D-deprenyl on: (1).OH production in a Fenton reaction; (2) MPTP-induced.OH generation and dopamine (DA) depletion in vivo, employing a sensitive HPLC-electrochemical procedure; and (3) formation of MPP(+) in vivo in the striatum following systemic administration of MPTP, employing an HPLC-photodiode array detection system. D-deprenyl inhibited ferrous citrate-induced.OH in vitro (0.45 microM) and MPTP-induced.OH in vivo in substantia nigra (SN) and in the striatum (1.0 mg/kg, i.p.). D-deprenyl did not, but L-deprenyl (0.5 mg/kg dose) did significantly inhibit formation of MPP(+) in the striatum 90 min following systemic MPTP injection. It failed to affect MAO-B activity at 0.5 mg/kg in the striatum, but effectively blocked MPTP-induced striatal DA depletion. The potency of D-deprenyl to scavenge MPTP-induced.OH in vivo and to render protection against the dopaminergic neurotoxicity without affecting dopamine turnover, MAO-B activity, or formation of MPP(+) in the brain indicates a direct involvement of.OH in the neurotoxic action of MPTP and antioxidant effect in the neuroprotective action of deprenyl.
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Samantaray S, Mohanakumar KP. Calcium channel agonist, (+/-)-Bay K8644, causes an immediate increase in the striatal 1-methyl-4-phenylpyridinium level following systemic administration of the dopaminergic neurotoxin, 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine, in Balb/c mice. Neurosci Lett 2003; 346:69-72. [PMID: 12850550 DOI: 10.1016/s0304-3940(03)00577-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In vivo formation of 1-methyl-4-phenylpyridinium ion (MPP(+)) in the striatum, and dopaminergic neurotoxicity following systemic administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in the presence and absence of calcium channel agonist (+/-)-Bay K8644 were analyzed in Balb/c mice. We used HPLC-photodiode array detection, HPLC-electrochemical detection and spectrofluorimetric procedures to measure striatal MPP(+) and dopamine (DA) and for the assay of monoamine oxidase-B (MAO-B) activity, respectively. Systemic administration of (+/-)-Bay K8644 resulted in a significant increase in striatal MAO-B activity. An MPTP-induced decrease in striatal MAO-B activity was attenuated by pre-treatment with (+/-)-Bay K8644 initially, but not on the 3rd day. MPP(+) formation in the striatum following systemic administration of MPTP was significantly increased by the pre-treatment of the agonist initially (30 min), but was not different afterwards (at 60 and 90 min). Nevertheless, the total MPP(+) formed over a 90 min period was found to be comparable. (+/-)-Bay K8644 administration prior to MPTP failed to influence the MPTP-induced striatal DA depletion on the 3rd day. While the transient effect of (+/-)-Bay K8644 on striatal MAO-B is reflected as an immediate increase in the levels of MPP(+) in the striatum, it failed to affect MPTP-induced DA neurotoxicity in Balb/c mice.
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Affiliation(s)
- Supriti Samantaray
- Division of Neurosciences, Indian Institute of Chemical Biology, 4, Raja S C Mullick Road, Jadavpur, Calcutta 700 032, India
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Samantaray S, Chandra G, Mohanakumar KP. Calcium channel agonist, (+/-)-Bay K8644, causes a transient increase in striatal monoamine oxidase activity in Balb/c mice. Neurosci Lett 2003; 342:73-6. [PMID: 12727321 DOI: 10.1016/s0304-3940(03)00238-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We investigated in vivo effects of the L-type calcium channel agonist 1,4-dihydro-2,6-dimethyl-5-nitro-4-[2-(trifluoromethyl) phenyl] pyridine-3-carboxylic acid ((+/-)-Bay K8644) on mitochondrial monoamine oxidase (MAO) activity and striatal dopamine (DA) content employing fluorimetric and HPLC-electrochemical procedures, respectively. (+/-)-Bay K8644 administration resulted in visible behavioral dysfunctions in mice. A reversible dose-independent inhibition of striatal DA levels and a significant increase in the brain mitochondrial MAO-A and -B activities were observed in animals treated with the calcium agonist. A positive relationship between the rise in the enzyme activity and decrease in DA content in (+/-)-Bay K8644 treated animals indicates a direct, but transient effect of this channel activator on DA metabolism, which may be related to acute behavioral syndromes exhibited following administration of the drug. Moreover, a direct involvement of L-type dihydropyridine sensitive calcium channels is indicated in this action, since nicardipine could effectively attenuate (+/-)-Bay K8644-induced behavioral aberrations, or block the striatal DA depletion and the increase in MAO activity. The present results have far-reaching implications in neuropharmacological research, where co-treatment of calcium channel drugs and MAO inhibitors are warranted.
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Affiliation(s)
- Supriti Samantaray
- Division of Neurosciences, Indian Institute of Chemical Biology, 4, Raja S. C. Mullick Road, 700 032, Calcutta, India
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Timperio AM, Kuiper HA, Zolla L. Identification of a furazolidone metabolite responsible for the inhibition of amino oxidases. Xenobiotica 2003; 33:153-67. [PMID: 12623758 DOI: 10.1080/0049825021000038459] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
1 Furazolidone, a drug widely used in human and veterinary medicine, exhibits inhibition of monoamine oxidase activity, as observed in the tissues of a number of different animal species, including man. The aim of the current study was to determine which of the two possible metabolites, 3-amino-2-oxazolidone (AOZ) or beta-hydroxyethylhydrazine (HEH), a well-known carcinogenic compound, is involved in the toxicological effects reported. 2 A new spectrometric method was set up to differentiate intracellular HEH from AOZ inside cells. This method works well at low pH where both AOZ and HEH are free in solution and available to react with the chemical chromophore (DAB). 3 The results confirm that furazolidone has to be metabolized in the intact cell in order to exhibit mitochondrial monoamine oxidase inhibition, whereas AOZ itself is able to exert a reversible monoamine oxidase inhibition. AOZ also inhibits bovine serum amino oxidase. On the contrary, HEH gives irreversible inhibition of both enzymes. However, the reversible nature of the AOZ inhibition with respect to HEH suggests that the two metabolites act by different mechanisms which do not require the biotransformation of AOZ to HEH. 4 Cell lysates, previously incubated with AOZ, were directly analysed and the formation of HEH from AOZ was not detected, supporting the conclusion that the amino oxidase inhibition observed on treatment with furazolidone was attributable to AOZ and not to HEH.
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Affiliation(s)
- A M Timperio
- Department of Environmental Science, University of Viterbo, Via S. C. de Lellis, Viterbo, I-01100 Italy
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36
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Gritsch S, Guccione S, Hoffmann R, Cambria A, Raciti G, Langer T. A 3D QSAR study of monoamino oxidase-B inhibitors using the chemical function based pharmacophore generation approach. JOURNAL OF ENZYME INHIBITION 2002; 16:199-215. [PMID: 11697041 DOI: 10.1080/14756360109162369] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
A molecular modelling study was performed using the CATALYST software package on a dataset of 100 thiosemicarbazide and thiazole derivatives acting as MAO-B irreversible inhibitors in order to, (i) better elucidate the possible role of the ligand features which are significant for binding and (ii) generate chemical features based pharmacophore models which were subsequently used as 3D queries for database searching. Based on known MAO-B inhibitors, pharmacophore hypotheses were created in order to find similarities between the thiazoles and thiosemicarbazides and identify the key sub-structures most likely to be significant for high MAO-B inhibitory activity.
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Affiliation(s)
- S Gritsch
- Institute of Pharmacy, Department of Pharmaceutical Chemistry, University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria
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Mohanakumar KP, Muralikrishnan D, Thomas B. Neuroprotection by sodium salicylate against 1-methyl-4-phenyl-1,2,3, 6-tetrahydropyridine-induced neurotoxicity. Brain Res 2000; 864:281-90. [PMID: 10802035 DOI: 10.1016/s0006-8993(00)02189-2] [Citation(s) in RCA: 92] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The potent dopaminergic neurotoxin 1-methyl-4-phenyl-1,2,3, 6-tetrahydropyridine (MPTP) is known to produce hydroxyl radicals (OH) in vitro and in vivo. Salicylate (SA) can hydroxylate itself to form 2,3- and 2,5-dihydroxybenzoic acid (DHBA) by utilizing OH. In the present study we investigated the OH scavenging action and neuroprotective effects, if any, of SA in mice treated with MPTP (30 mg/kg i.p. twice, 16 h apart). MPTP treatment resulted in in vivo generation of OH and nigral neuronal insult as evidenced by dopamine depletion in nucleus caudatus putamen (NCP). This also caused significant decrease in glutathione in substantia nigra (SN) and NCP. SA administration alone in mice did not affect total monoamine oxidase (MAO) or MAO-B activities of the mitochondrial fraction or the crude enzyme preparation from SN or NCP. Pre-treatment of these animals with SA (25-100 mg/kg, i.p.) resulted in dose-dependent production of 2,3- and 2,5-DHBA in NCP. SA administration prior to or following MPTP blocked the neurotoxin-induced behavioural dysfunction as well as glutathione and dopamine depletion on the 7th day indicating its potent neuroprotective action. The present study suggests that SA acts as a free radical scavenger in the brain and indicates its strength as a valuable neuroprotectant.
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Affiliation(s)
- K P Mohanakumar
- Laboratory of Neurochemistry, Division of Pharmacology and Experimental Therapeutics, Indian Institute of Chemical Biology, 4, Raja S.C. Mullick Road, Calcutta, India.
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38
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Lee HG, Park SJ, Choi EK, Carp RI, Kim YS. Increased expression of prion protein is associated with changes in dopamine metabolism and MAO activity in PC12 cells. J Mol Neurosci 1999; 13:121-6. [PMID: 10691299 DOI: 10.1385/jmn:13:1-2:121] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Prion diseases of humans and animals occur following infection with infectious agents containing PrP(Sc) or in situations in which there is a mutation of the prion protein (PrP) gene. The cellular prion protein (PrP(C)) is a sialoglycoprotein that is expressed predominantly in neurons. PrP(C) is converted into a pathogenic form of PrP (PrP(Sc)), which is distinguishable from PrP(C) by its relative resistance to protease digestion. A number of postulates have been advanced for the function of normal PrP (PrP(C)), but this issue has not been resolved. To investigate the function(s) of PrP(C), we established clonal PC12 cell lines, which have elevated PrP(C) expression. The results show that there were alterations in dopamine metabolism and in monoamine oxidase (MAO) activity in transfected PC12 cells that overexpress PrP(C). There was an increase in concentration of DOPAC, a metabolite of dopamine, and in MAO activity in cells overexpressing PrP(C). MAO is involved in oxidative degradation of dopamine (DA). Our data suggest that PrP(C) plays a role in DA metabolism by regulating MAO activity.
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Affiliation(s)
- H G Lee
- Institute of Environment & Life Science, Hallym Academy of Sciences, Chuncheon, Korea
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39
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Lee DW, Sohn HO, Lim HB, Lee YG, Kim YS, Carp RI, Wisniewski HM. Alteration of free radical metabolism in the brain of mice infected with scrapie agent. Free Radic Res 1999; 30:499-507. [PMID: 10400462 DOI: 10.1080/10715769900300541] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Alteration of free radical metabolism in the mouse brain by scrapie infection was evaluated. The infection of mice with scrapie agent, 87V strain, slightly increased the activities of catalase and glutathione-S-transferase, while it had no effect on glutathione peroxidase, glutathione reductase, and Cu, Zn-superoxide dismutase. Results show that the scrapie infection decreased the activity of mitochondrial Mn-superoxide dismutase by 50% but increased that of monoamine oxidase (p < 0.05). Scrapie infection also increased the rate of mitochondrial superoxide generation (p < 0.05). Following scrapie infection, the level of free-sulfhydryl compounds in brain homogenates slightly decreased, but the content of thiobarbituric-acid-reactive substances and malondialdehyde increased significantly. Electron microscopy indicated that the ultrastructure of mitochondria was destroyed in the brain of scrapie-infected mice. These results suggest that elevated oxygen free radical generation and lowered scavenging activity in mitochondria might cause the free radical damage to the brain. Such deleterious changes in mitochondria may contribute to the development of prion disease.
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Affiliation(s)
- D W Lee
- Laboratory of Biochemistry, Korea Ginseng and Tobacco Research Institute, Taejon, Korea
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40
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Padiglia A, Medda R, Lorrai A, Murgia B, Pedersen JZ, Finazzi Agró A, Floris G. Characterization of Euphorbia characias latex amine oxidase. PLANT PHYSIOLOGY 1998; 117:1363-1371. [PMID: 9701592 PMCID: PMC34900 DOI: 10.1104/pp.117.4.1363] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/1998] [Accepted: 05/12/1998] [Indexed: 05/22/2023]
Abstract
A copper-containing amine oxidase from the latex of Euphorbia characias was purified to homogeneity and the copper-free enzyme obtained by a ligand-exchange procedure. The interactions of highly purified apo- and holoenzyme with several substrates, carbonyl reagents, and copper ligands were investigated by optical spectroscopy under both aerobic and anaerobic conditions. The extinction coefficients at 278 and 490 nm were determined as 3.78 x 10(5) M-1 cm-1 and 6000 M-1 cm-1, respectively. Active-site titration of highly purified enzyme with substrates and carbonyl reagents showed the presence of one cofactor at each enzyme subunit. In anaerobiosis the native enzyme oxidized one equivalent substrate and released one equivalent aldehyde per enzyme subunit. The apoenzyme gave exactly the same 1:1:1 stoichiometry in anaerobiosis and in aerobiosis. These findings demonstrate unequivocally that copper-free amine oxidase can oxidize substrates with a single half-catalytic cycle. The DNA-derived protein sequence shows a characteristic hexapeptide present in most 6-hydroxydopa quinone-containing amine oxidases. This hexapeptide contains the tyrosinyl residue that can be modified into the cofactor 6-hydroxydopa quinone.
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Affiliation(s)
- A Padiglia
- Department of Biochemistry and Human Physiology, University of Cagliari, Cagliari, Italy
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41
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Malorni W, Giammarioli AM, Matarrese P, Pietrangeli P, Agostinelli E, Ciaccio A, Grassilli E, Mondovi B. Protection against apoptosis by monoamine oxidase A inhibitors. FEBS Lett 1998; 426:155-9. [PMID: 9598998 DOI: 10.1016/s0014-5793(98)00315-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Several lines of evidence have been accumulating indicating that an important role may be played by mitochondrial homeostasis in the initiation phase, the first stage of apoptosis. This work describes the results obtained by using different inhibitors of monoamine oxidases (MAO), i.e. pargyline, clorgyline and deprenyl, on mitochondrial integrity and apoptosis. Both pargyline and clorgyline are capable of protecting cells from apoptosis induced by serum starvation while deprenyl is ineffective. These data represent the first demonstration that MAO-A inhibitors may protect cells from apoptosis through a mechanism involving the maintenance of mitochondrial homeostasis.
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Affiliation(s)
- W Malorni
- Department of Ultrastructures, Istituto Superiore di Sanità, Rome, Italy.
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42
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Cambria A, Raudino A, Castelli F, Raciti G, Mazzone P, Buemi G, Pignatello R, Mazzone G. Structure-activity studies on monoamine oxidase inhibitors by calorimetric and quantum mechanical calculations. JOURNAL OF ENZYME INHIBITION 1996; 10:215-229. [PMID: 8872742 DOI: 10.3109/14756369609036529] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Structure-activity relationship studies were carried out on a new series of hydrazino-thiosemicarbazide derivatives, which inhibit monoamino oxidase (MAO). Fifty-five compounds were synthesized and tested "in vitro" for their inhibitory effects on rat liver mitochondrial MAO. The most efficient MAO inhibitors were the benzylidene derivatives (sequence: see text] where R is the piperonyl radical and ethyl or isopropyl substituents are in R1 position. Correlation of MAO activity with hydrophobic, electronic and steric properties of tested compounds, evaluated by means of Quantum Mechanical calculations and calorimetric analysis (DSC) suggest that electronic and steric parameters give a better fit than hydrophobicity with the biological activity.
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Affiliation(s)
- A Cambria
- Istituto di Scienze Biochimiche e Farmacologiche, University of Catania, Italy
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43
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Raciti G, Mazzone P, Raudino A, Mazzone G, Cambria A. Inhibition of rat liver mitochondrial monoamine oxidase by hydrazine-thiazole derivatives: structure-activity relationships. Bioorg Med Chem 1995; 3:1485-91. [PMID: 8634828 DOI: 10.1016/0968-0896(95)00137-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The purpose of this research is to study the relationship between chemical structure and inhibitory activity of some hydrazine-thiazole derivatives on rat liver mitochondria monoamine oxidase (MAO). Forty-five compounds belonging to three series of hydrazine-thiazole derivatives, with either alkylic or arylic substituents in the thiazole ring, were tested. The highest inhibitory activity was observed with piperonyl derivatives 25 and 40, which contain a 4-methyl group in the thiazole nucleus. The structure-activity relationship of MAO inhibitors was established in relation to hydrophobic, electronic and steric hindrance parameters. A mechanism of enzyme inhibition was proposed based on the calculation of HOMO energies.
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Affiliation(s)
- G Raciti
- Istituto di Scienze Biochimiche e Farmacologiche, Universita' di Catania, Italy
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44
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Mahmood I, Neau SH, Mason WD. An enzymatic assay for the MAO-B inhibitor selegiline in plasma. J Pharm Biomed Anal 1994; 12:895-9. [PMID: 7981318 DOI: 10.1016/0731-7085(93)e0021-e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A sensitive fluorimetric assay based on inhibition of rat brain monoamine oxidase-B (MAO-B) in vitro has been described. The procedure measures the inhibition of MAO activity produced by the addition of selegiline extracted from human plasma. This method uses the substrate kynuramine which is converted by MAO to the product 4-hydroxyquinoline which fluoresces in alkaline solution. Human plasma (500 microliters) containing different concentrations of selegiline was deproteinized and extracted with ethyl acetate-butyl chloride. After reconstitution with 200 microliters phosphate buffer, 50 microliters of rat brain homogenate was added to study the MAO-B inhibition. Selegiline metabolites, amphetamine and methamphetamine (50 ng ml-1), and desmethylselegiline (20 ng ml-1), showed no inhibitory effect on MAO-B inhibition. Selegiline concentrations as low as 0.25 ng ml-1 can be detected. The standard curve was linear from 125 pg (0.25 ng ml-1) to 4000 pg (8.0 ng ml-1) in the incubation tube. This method should be helpful to determine pharmacokinetic parameters of selegiline after i.v. or oral dosing.
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Affiliation(s)
- I Mahmood
- School of Pharmacy, University of Missouri-Kansas City 64110-2499
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45
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Mitra N, Mohanakumar KP, Ganguly DK. Resistance of golden hamster to 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine: relationship with low levels of regional monoamine oxidase B. J Neurochem 1994; 62:1906-12. [PMID: 8158138 DOI: 10.1046/j.1471-4159.1994.62051906.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Effects of acute and chronic administration of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) were investigated for dopamine (DA) and its metabolites, 3,4-dihydroxyphenylacetic acid and 4-hydroxy-3-methoxyphenylacetic acid, in nucleus caudatus putamen (NCP), limbic system, and substantia nigra (SN) of golden hamster and BALB/c and C57/BL mice to obtain a clue for the variance of MPTP toxicity between the strains and species. Regional differences in the levels of monoamine oxidase (MAO) and the in vitro effects of MAO inhibitors were also determined and correlated with MPTP neurotoxicity. Concentrations of MPTP in the brains of mice and golden hamster at 10 min were comparable. Golden hamster was found to be resistant to the administration of MPTP as indicated by a lack of any alteration from the normal content of DA in NCP, limbic system, and SN. Both strains of mice exhibited > 50% and > 75% depletion of DA (C57/BL and BALB/c, respectively). The metabolites-to-DA ratios were decreased and increased in golden hamster and mouse strains, respectively, after acute or chronic treatment. Whereas the content of total MAO in golden hamster was one-third to one-sixth of any nuclei or mitochondria of both strains of mice, the ratio of MAO A to B was significantly higher in the former species.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- N Mitra
- Division of Pharmacology and Experimental Therapeutics, Indian Institute of Chemical Biology, Calcutta
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46
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Castelli F, Pignatello R, Sarpietro MG, Mazzone P, Raciti G, Mazzone G. Correlation between monoamino oxidase inhibitor activity of some thiazol-2-ylhydrazines and their interaction with dipalmitoylphosphatidylcholine liposomes. J Pharm Sci 1994; 83:362-6. [PMID: 8207682 DOI: 10.1002/jps.2600830319] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A calorimetric investigation has been carried out on the influence exerted by some 1-(alkoxybenzoyl)-2-(4-substituted thiazolyl-2-yl)hydrazines, possessing monoamine oxidase inhibitory (MAOI) activity, on the thermotropic behavior of model membranes constituted by dipalmitoylphosphatidylcholine (DPPC) vesicles. Attention was paid to evaluate how structural variations of drugs may influence drug-lipid interaction. The examined drugs were found to modify the gel to liquid-crystal phase transition of DPPC liposomes, by causing a shift of the transition temperature (Tm) toward lower values and a negligible variation in the enthalpy changes (delta H). The different effects on DPPC thermotropic behavior of these MAOI drugs could be considered in terms of different substituents on the molecule's backbone. The calorimetric results were related to drug's MAO inhibitory activity measured by fluorescence techniques and the apparent distribution coefficient of the compounds in water/n-octanol. A hypothesis on a correlation between a drug's structure, inhibitory activity, and membrane interaction has been suggested.
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Affiliation(s)
- F Castelli
- Dipartimento di Scienze Chimiche, Università di Catania, Italy
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47
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Abstract
In the present study, the effects of long-term pinealectomy on tryptophan, 5-hydroxytryptamine (5-HT or serotonin), 5-hydroxy-3-indoleacetic acid (5-HIAA), and tryptophan hydroxylase and monoamine oxidase activities were studied in preoptic area-anterior hypothalamus (POA-AH) and in the medial and posterior hypothalamus of the rat. After pinealectomy, 5-HT levels decreased significantly in medial hypothalamus but increased in the POA-AH. The levels of 5-HIAA decreased significantly in the POA-AH and medial hypothalamus. Tryptophan levels remained unchanged while tryptophan hydroxylase activity diminished significantly in POA-AH and medial hypothalamus. Monoamine oxidase activity remained unchanged in the hypothalamic regions. These results suggest that pinealectomy induces differential inhibitory actions on the serotoninergic terminal regions, mainly in anterior and medial hypothalamic areas.
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Affiliation(s)
- J Míguez
- Departamento de Fisiología Animal, Facultad de Biología, Universidad de Santiago de Compostela, Galicia, Spain
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48
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Abstract
The purpose of the present study was to determine the effects of long-term pinealectomy on serotonin metabolism in the amygdala and the hippocampus of male rats. Pinealectomy did not significantly alter either tryptophan or serotonin concentrations in the amygdala or the hippocampus. However, statistically significant decreases in 5-hydroxyindole-3-acetic acid levels and tryptophan hydroxylase activity were found in the amygdala. Monoamine oxidase activity was unchanged in both regions. These results support the involvement of the amygdaloid serotoninergic system in mediating the functions of the pineal gland.
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Affiliation(s)
- J Miguez
- Department of Animal Physiology, Faculty of Biology, University of Santiago de Compostela, Spain
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49
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Carr LA, Basham JK. Effects of tobacco smoke constituents on MPTP-induced toxicity and monoamine oxidase activity in the mouse brain. Life Sci 1991; 48:1173-7. [PMID: 2002748 DOI: 10.1016/0024-3205(91)90455-k] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Exposure to cigarette smoke has been found to attenuate the reduction in striatal dopamine levels caused by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in mice and to inhibit monoamine oxidase (MAO) activity in brain tissue. To confirm whether specific smoke constituents which have been reported to protect against MPTP toxicity were responsible for these effects, mice were treated chronically with nicotine, 4-phenylpyridine and hydrazine. Although all three compounds prevented the decrease in dopamine metabolite levels induced by MPTP, there was no significant effect on dopamine levels. None of the three compounds inhibited MAO activity in cerebral tissue following treatment in vivo. However, an extract of tobacco smoke particulate matter caused a marked inhibition of MAO A and MAO B activity when added in vitro. The results suggest that one or more unidentified substances in tobacco smoke are capable of inhibiting brain MAO and perhaps altering the formation of the active metabolite of MPTP.
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Affiliation(s)
- L A Carr
- Department of Pharmacology and Toxicology, University of Louisville, KY 40292
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50
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Carr LA, Rowell PP. Attenuation of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced neurotoxicity by tobacco smoke. Neuropharmacology 1990; 29:311-4. [PMID: 2325834 DOI: 10.1016/0028-3908(90)90019-n] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Several epidemiological studies have indicated that there may be an inverse relationship between smoking and Parkinson's disease. The purpose of this study was to determine whether chronic exposure to cigarette smoke alters the parkinsonian-like neurochemical changes caused by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) in mice. Following 4 weeks of brief, intermittent exposure to smoke, mice were treated with MPTP, 10 mg/kg. Smoke exposure was found to reduce the decrease in striatal dopamine and metabolite levels caused by MPTP. Although smoke exposure inhibited cerebral MAO-B activity, tissues from smoke-treated mice were able to metabolize MPTP in a normal fashion. This suggests that inhibition of cerebral MAO may not be a major mechanism for the apparent protective effect of cigarette smoke.
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Affiliation(s)
- L A Carr
- Department of Pharmacology and Toxicology, University of Louisville, KY 40292
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