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Leite ELL, Sheila de Queiroz Souza A, Riceli Vasconcelos Ribeiro P, de Cássia Alves Pereira R, Florêncio Martins N, Kueirislene Amâncio Ferreira M, Silva Alencar de Menezes JE, Silva Dos Santos H, Deusdênia Loiola Pessoa O, Marques Canuto K. Molecular Docking and GC/MS-Based Approach for Identification of Anxiolytic Alkaloids from Griffinia (Amaryllidaceae) Species in a Zebrafish Model. Chem Biodivers 2024; 21:e202302122. [PMID: 38354224 DOI: 10.1002/cbdv.202302122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 02/12/2024] [Accepted: 02/13/2024] [Indexed: 02/16/2024]
Abstract
Griffinia gardneriana Ravenna, Griffinia liboniana Morren and Griffinia nocturna Ravenna (Amarillydaceae) are bulbous plants found in tropical regions of Brazil. Our work aimed to determine the alkaloid profiles of Griffinia spp. and evaluate their anxiolytic potential through in vivo and in silico assays. The plants grown in greenhouses were dried and their ground bulbs were subjected to liquid-liquid partitions, resulting in alkaloid fractions that were analyzed by gas chromatography coupled to mass spectrometry (GC-MS). Anxiolytic activity was evaluated in zebrafish (Danio rerio) through intraperitoneal injection at doses of 40, 100 and 200 mg/kg in light-dark box test. GC-MS analyses revealed 23 alkaloids belonging to different skeleton types: lycorine, homolychorine, galanthamine, crinine, haemanthamine, montanine and narcisclasine. The chemical profiles were relatively similar, presenting 8 alkaloids common to the three species. The major component for G. gardneriana and G. liboniana was lycorine, while G. nocturna consisted mainly of anhydrolycorine. All three alkaloid fractions demonstrated anxiolytic effect. Furthermore, pre-treatment with diazepam and pizotifen drugs was able to reverse the anxiolytic action, indicating involving the GABAergic and serotonergic receptors. Molecular docking showed that the compounds vittatine, lycorine and 11,12-dehydro-2-methoxyassoanine had high affinity with both receptors, suggesting them to be responsible for the anxiolytic effect.
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Affiliation(s)
- Elder Luis Lima Leite
- Embrapa Agroindústria Tropical, Fortaleza, CE, Brazil
- Departamento de Química Orgânica e Inorgânica, Universidade Federal do Ceará, Fortaleza Ceará Brazil
| | | | | | | | | | - Maria Kueirislene Amâncio Ferreira
- Programa de Pós-graduação em Ciências Naturais, Universidade Estadual do Ceará, Fortaleza, CE, Brazil
- Centro de Ciências Exatas e Tecnologia, Universidade Estadual do Vale do Acaraú, Sobral, CE, Brazil
| | | | - Hélcio Silva Dos Santos
- Programa de Pós-graduação em Ciências Naturais, Universidade Estadual do Ceará, Fortaleza, CE, Brazil
- Centro de Ciências Exatas e Tecnologia, Universidade Estadual do Vale do Acaraú, Sobral, CE, Brazil
| | | | - Kirley Marques Canuto
- Embrapa Agroindústria Tropical, Fortaleza, CE, Brazil
- Programa de Pós-graduação em Ciências Naturais, Universidade Estadual do Ceará, Fortaleza, CE, Brazil
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Bradley SA, Lehka BJ, Hansson FG, Adhikari KB, Rago D, Rubaszka P, Haidar AK, Chen L, Hansen LG, Gudich O, Giannakou K, Lengger B, Gill RT, Nakamura Y, de Bernonville TD, Koudounas K, Romero-Suarez D, Ding L, Qiao Y, Frimurer TM, Petersen AA, Besseau S, Kumar S, Gautron N, Melin C, Marc J, Jeanneau R, O'Connor SE, Courdavault V, Keasling JD, Zhang J, Jensen MK. Biosynthesis of natural and halogenated plant monoterpene indole alkaloids in yeast. Nat Chem Biol 2023; 19:1551-1560. [PMID: 37932529 PMCID: PMC10667104 DOI: 10.1038/s41589-023-01430-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/25/2023] [Indexed: 11/08/2023]
Abstract
Monoterpenoid indole alkaloids (MIAs) represent a large class of plant natural products with marketed pharmaceutical activities against a wide range of indications, including cancer, malaria and hypertension. Halogenated MIAs have shown improved pharmaceutical properties; however, synthesis of new-to-nature halogenated MIAs remains a challenge. Here we demonstrate a platform for de novo biosynthesis of two MIAs, serpentine and alstonine, in baker's yeast Saccharomyces cerevisiae and deploy it to systematically explore the biocatalytic potential of refactored MIA pathways for the production of halogenated MIAs. From this, we demonstrate conversion of individual haloindole derivatives to a total of 19 different new-to-nature haloserpentine and haloalstonine analogs. Furthermore, by process optimization and heterologous expression of a modified halogenase in the microbial MIA platform, we document de novo halogenation and biosynthesis of chloroalstonine. Together, this study highlights a microbial platform for enzymatic exploration and production of complex natural and new-to-nature MIAs with therapeutic potential.
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Affiliation(s)
- Samuel A Bradley
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Beata J Lehka
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Frederik G Hansson
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Khem B Adhikari
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Daniela Rago
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Paulina Rubaszka
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Ahmad K Haidar
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Ling Chen
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Lea G Hansen
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Olga Gudich
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Konstantina Giannakou
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Bettina Lengger
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Ryan T Gill
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Yoko Nakamura
- Department of Natural Product Biosynthesis, Max Planck Institute for Chemical Ecology, Jena, Germany
| | | | | | - David Romero-Suarez
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
| | - Ling Ding
- Department of Bioengineering, Technical University of Denmark, Lyngby, Denmark
| | - Yijun Qiao
- Department of Bioengineering, Technical University of Denmark, Lyngby, Denmark
| | - Thomas M Frimurer
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark
| | - Anja A Petersen
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark
| | - Sébastien Besseau
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, Tours, France
| | - Sandeep Kumar
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, Tours, France
| | - Nicolas Gautron
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, Tours, France
| | - Celine Melin
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, Tours, France
| | - Jillian Marc
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, Tours, France
| | | | - Sarah E O'Connor
- Department of Natural Product Biosynthesis, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Vincent Courdavault
- EA2106 Biomolécules et Biotechnologies Végétales, Université de Tours, Tours, France
| | - Jay D Keasling
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark
- Joint BioEnergy Institute, Emeryville, CA, USA
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, Berkeley, CA, USA
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA
- Center for Synthetic Biochemistry, Institute for Synthetic Biology, Shenzhen Institutes of Advanced Technologies, Shenzhen, China
| | - Jie Zhang
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark.
| | - Michael K Jensen
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Lyngby, Denmark.
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Zhang Q, Jiang Q, Sa K, Liang J, Sun D, Li H, Chen L. Research progress of plant-derived natural alkaloids in central nervous system diseases. Phytother Res 2023; 37:4885-4907. [PMID: 37455555 DOI: 10.1002/ptr.7955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 05/14/2023] [Accepted: 06/30/2023] [Indexed: 07/18/2023]
Abstract
Central nervous system (CNS) disease is one of the most important causes of human death. Because of their complex pathogenesis, more and more attention has been paid to them. At present, drug treatment of the CNS is the main means; however, most drugs only relieve symptoms, and some have certain toxicity and side effects. Natural compounds derived from plants can provide safer and more effective alternatives. Alkaloids are common nitrogenous basic organic compounds found in nature, which exist widely in many kinds of plants and have unique application value in modern medicine. For example, Galantamine and Huperzine A from medicinal plants are widely used drugs on the market to treat Alzheimer's disease. Therefore, the main purpose of this review is to provide the available information on natural alkaloids with the activity of treating central nervous system diseases in order to explore the trends and perspectives for the further study of central nervous system drugs. In this paper, 120 alkaloids with the potential effect of treating central nervous system diseases are summarized from the aspects of sources, structure types, mechanism of action and structure-activity relationship.
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Affiliation(s)
- Qingqing Zhang
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Qinghua Jiang
- Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyang, China
| | - Kuiru Sa
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Junming Liang
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Dejuan Sun
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Hua Li
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, China
| | - Lixia Chen
- Wuya College of Innovation, Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
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Rajagopal L, Mahjour S, Huang M, Ryan CA, Elzokaky A, Csakai AJ, Orr MJ, Scheidt K, Meltzer HY. NU-1223, a simplified analog of alstonine, with 5-HT 2cR agonist-like activity, rescues memory deficit and positive and negative symptoms in subchronic phencyclidine mouse model of schizophrenia. Behav Brain Res 2023; 454:114614. [PMID: 37572758 DOI: 10.1016/j.bbr.2023.114614] [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: 03/27/2023] [Revised: 08/03/2023] [Accepted: 08/04/2023] [Indexed: 08/14/2023]
Abstract
The serotonin (5-HT)2 C receptor(R) is a widely distributed G-protein-coupled receptor, expressed abundantly in the central nervous system. Alstonine is a natural product that has significant properties of atypical antipsychotic drugs (AAPDs), in part attributed to 5-HT2 CR agonism. Based on alstonine, we developed NU-1223, a simplified β carboline analog of alstonine, which shows efficacies comparable to alstonine and to other 5-HT2 CR agonists, Ro-60-0175 and lorcaserin. The 5-HT2 CR antagonism of some APDs, including olanzapine, contributes to weight gain, a major side effect which limits its tolerability, while the 5-HT2 CR agonists and/or modulators, may minimize weight gain. We used the well-established rodent subchronic phencyclidine (PCP) model to test the efficacy of NU-1223 on episodic memory, using novel object recognition (NOR) task, positive (locomotor activity), and negative symptoms (social interaction) of schizophrenia (SCH). We found that NU-1223 produced both transient and prolonged rescue of the subchronic PCP-induced deficits in NOR and SI. Further, NU-1223, but not Ro-60-0175, blocked PCP and amphetamine (AMPH)-induced increase in LMA in subchronic PCP mice. These transient efficacies in LMA were blocked by the 5-HT2 CR antagonist, SB242084. Sub-chronic NU-1223 treatment rescued NOR and SI deficits in subchronic PCP mice for at least 39 days after 3 days injection. Chronic treatment with NU-1223, ip, twice a day for 21 days, did not increase average body weight vs olanzapine. These findings clearly indicate NU-1223 as a class of small molecules with a possible 5-HT2 CR-agonist-like mechanism of action, attributing to its efficacy. Additional in-depth receptor mechanistic studies are warranted, as this small molecule, both transiently and chronically rescued PCP-induced deficits. Furthermore, NU-1223 did not induce weight gain post long-term administrations vs AAPDs such as olanzapine, making NU-1223 a putative therapeutic compound for SCH.
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Affiliation(s)
- Lakshmi Rajagopal
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Sanaz Mahjour
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Mei Huang
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Chelsea A Ryan
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Ahmad Elzokaky
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Adam J Csakai
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - Meghan J Orr
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
| | - Karl Scheidt
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA; Department of Pharmacology, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Herbert Y Meltzer
- Department of Psychiatry and Behavioral Sciences, Northwestern Feinberg School of Medicine, Chicago, IL 60611, USA.
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Donaire R, Papini MR, Torres C. Effects of alcohol consumption induced by reward loss on behavior in the hole-board test. Behav Processes 2020; 176:104135. [DOI: 10.1016/j.beproc.2020.104135] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/26/2020] [Accepted: 05/03/2020] [Indexed: 11/29/2022]
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Beauvalet JC, Pilz LK, Hidalgo MPL, Elisabetsky E. Is chronodisruption a vulnerability factor to stress? Behav Brain Res 2018; 359:333-341. [PMID: 30445124 DOI: 10.1016/j.bbr.2018.11.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 11/08/2018] [Accepted: 11/12/2018] [Indexed: 01/21/2023]
Abstract
Since the circadian system seems to modulate stress responses, this study aimed to evaluate if the combination of circadian strain and stress amplifies changes expected from each factor alone. Control Balb/c mice (12:12-NS) kept in standard 12:12 light:dark cycles (LD) and submitted to no stress procedures (NS) were compared to groups submitted to shortened LD (10:10-NS), chronic mild stress (CMS) but no circadian strain (12:12-CMS), or shortened LD followed by CMS (10:10-CMS). Rest-activity/temperature rhythms and body weight were assessed throughout the experiments. In Experiment 1 mice were submitted to 3 weeks of CMS; in Experiment 2 sucrose preference and light-dark tests were performed. Also, blood samples were collected at the end of Experiment 2 to assess metabolic parameters. Relative amplitude of temperature after CMS was increased only in the 10:10-CMS group, while body weight change was reduced during CMS regardless of LD intervention. During the CMS, the relative amplitude of temperature was negatively correlated with body weight gain. No differences in behavior and metabolic parameters were seen among groups. Identifying suitable research designs to investigate our hypothesis that circadian disturbances may increase vulnerability to stress-induced depression and anxiety is warranted.
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Affiliation(s)
- Juliana C Beauvalet
- Laboratório de Cronobiologia e Sono, Hospital de Clínicas de Porto Alegre (HCPA)/Universidade Federal do Rio Grande do Sul (UFRGS). Porto Alegre, RS, Brazil; Programa de Pós-Graduação em Psiquiatria e Ciencias do Comportamento, UFRGS. Porto Alegre, RS, Brazil
| | - Luísa K Pilz
- Laboratório de Cronobiologia e Sono, Hospital de Clínicas de Porto Alegre (HCPA)/Universidade Federal do Rio Grande do Sul (UFRGS). Porto Alegre, RS, Brazil; Programa de Pós-Graduação em Psiquiatria e Ciencias do Comportamento, UFRGS. Porto Alegre, RS, Brazil.
| | - Maria Paz L Hidalgo
- Laboratório de Cronobiologia e Sono, Hospital de Clínicas de Porto Alegre (HCPA)/Universidade Federal do Rio Grande do Sul (UFRGS). Porto Alegre, RS, Brazil; Programa de Pós-Graduação em Psiquiatria e Ciencias do Comportamento, UFRGS. Porto Alegre, RS, Brazil; Departamento de Psiquiatria e Medicina Legal, UFRGS. Porto Alegre, RS, Brazil
| | - Elaine Elisabetsky
- Laboratório de Cronobiologia e Sono, Hospital de Clínicas de Porto Alegre (HCPA)/Universidade Federal do Rio Grande do Sul (UFRGS). Porto Alegre, RS, Brazil; Departamento de Bioquímica, Programa de Pós-Graduação em Ciências Biológicas: Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS. Porto Alegre, RS, Brazil
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Santos P, Herrmann AP, Benvenutti R, Noetzold G, Giongo F, Gama CS, Piato AL, Elisabetsky E. Anxiolytic properties of N -acetylcysteine in mice. Behav Brain Res 2017; 317:461-469. [DOI: 10.1016/j.bbr.2016.10.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 10/01/2016] [Accepted: 10/06/2016] [Indexed: 12/21/2022]
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Younai A, Zeng BS, Meltzer HY, Scheidt KA. Enantioselective Syntheses of Heteroyohimbine Natural Products: A Unified Approach through Cooperative Catalysis. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Younai A, Zeng BS, Meltzer HY, Scheidt KA. Enantioselective Syntheses of Heteroyohimbine Natural Products: A Unified Approach through Cooperative Catalysis. Angew Chem Int Ed Engl 2015; 54:6900-4. [DOI: 10.1002/anie.201502011] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Indexed: 12/28/2022]
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Zaman A, Khan MSS, Akter L, Syeed SH, Akter J, Al Mamun A, Alam ME, Habib MA, Jalil MA. Exploring new pharmacology and toxicological screening and safety evaluation of one widely used formulation of Nidrakar Bati from South Asia region. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 15:121. [PMID: 25880852 PMCID: PMC4415343 DOI: 10.1186/s12906-015-0635-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Accepted: 03/25/2015] [Indexed: 11/12/2022]
Abstract
BACKGROUND Nidrakar Bati (NKB) is an herbal remedy consisted with seven medicinal herbs widely used to cure Somnifacient (sleeping aid) in South Asia as Ayurvedic medicinal system. In the present study, pharmacological and toxicological effects of this medicine was investigated in mice to validate the safety and efficacy of the herb. METHODS Organic solvent extracts NKB were prepared using maceration method. Effect of extracts on the central nervous system was evaluated using hypnotic activity assay. Effect of the extracts on metabolic activity, assessing involvement of thyroid was conducted using hypoxia test. analgesic and anti-inflammatory activities were assessed in mice using acetic acid induced writhing, formalin induced paw edema, xylene induced ear edema assays. Anxiolytic activity was performed using plus maze, climbing out and forced swimming tests. Effect of the extracts on psychopharmacological effect was carried out using locomotor activity tests (open field, Hole-board and Hole-cross tests). Neuropharmacological effect of the extracts was performed using motor coordination (rotarod test). Toxicological potential of the extract was evaluated using gastro-intestinal activity (gastric emptying and gastrointestinal motility tests). RESULTS The studied formulation reduced the CNS stimulant effects dose independently. In the hypoxia test, only a dose of 100 mg/kg of NKB decreased the survival time. Orally administration of the NKB (200 and 400 mg/kg) produced significant inhibition (P < 0.01) of the acetic acid-induced writhing in mice and suppressed xylene induced ear edema and formalin-induced licking response of animals in both phases of the test. NKB showed locomotor activity (p < 0.05) both in higher and lower doses (100 and 400 mg/kg). NKB increased the total ambulation dose dependently (p < 0.05). NKB, at all tested doses (100, 200 and 400 mg/kg) increased some locomotion activity parameters (ambulation, head dipping and emotional defecation) in hole board test. At higher doses (200 and 400 mg/kg), NKB showed a significant increase in hole cross test. NKB showed an increase in the time on the open arms of the maze at low to medium doses (100 and 200 mg/kg). When using the Rotarod method, NKB showed a considerable increase on motor coordination of the mice. NKB produced marked gastric emptying effect and decreased gastrointestinal motility in mice at low dose. CONCLUSIONS NKB demonstrated various pharmacological effects and toxicological effects due to presence of several herbs in the formulation those are not closely fit for the effect of CNS depressants.
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Affiliation(s)
- Afria Zaman
- Department of Pharmaceutical Sciences, University of Development Alternative, Dhanmondi, Dhaka, 1209, Bangladesh.
| | | | - Lucky Akter
- Department of Pharmaceutical Sciences, University of Development Alternative, Dhanmondi, Dhaka, 1209, Bangladesh.
| | - Sharif Hossain Syeed
- Department of Pharmaceutical Sciences, State University Bangladesh, Dhaka, Bangladesh.
| | - Jakia Akter
- Department of Pharmaceutical Sciences, Stamford University Bangladesh, Dhaka, Bangladesh.
| | - Abdullah Al Mamun
- Department of Pharmaceutical Sciences, Bangladesh University, Mohammodpur, Dhaka, Bangladesh.
| | - Md Ershad Alam
- Department of Pharmaceutical Sciences, Bangladesh University, Mohammodpur, Dhaka, Bangladesh.
| | - Md Ahsan Habib
- Department of Pharmaceutical Sciences, Bangladesh University, Mohammodpur, Dhaka, Bangladesh.
| | - Md Abdul Jalil
- Department of Pharmaceutical Sciences, Bangladesh University, Mohammodpur, Dhaka, Bangladesh.
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Abarca B, Custodio R, Cuadro AM, Sucunza D, Domingo A, Mendicuti F, Alvarez-Builla J, Vaquero JJ. Efficient Synthesis of an Indoloquinolizinium Alkaloid Selective DNA-Binder by Ring-Closing Metathesis. Org Lett 2014; 16:3464-7. [DOI: 10.1021/ol5013668] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Beatriz Abarca
- Departamento de Química Orgánica y Química Inorgánica, ‡Departamento de
Biología de Sistemas, §Departamento de Química Analítica,
Química Física e Ingeniería Química, Universidad de Alcalá, 28871-Alcalá de Henares,
Madrid, Spain
| | - Raul Custodio
- Departamento de Química Orgánica y Química Inorgánica, ‡Departamento de
Biología de Sistemas, §Departamento de Química Analítica,
Química Física e Ingeniería Química, Universidad de Alcalá, 28871-Alcalá de Henares,
Madrid, Spain
| | - Ana M. Cuadro
- Departamento de Química Orgánica y Química Inorgánica, ‡Departamento de
Biología de Sistemas, §Departamento de Química Analítica,
Química Física e Ingeniería Química, Universidad de Alcalá, 28871-Alcalá de Henares,
Madrid, Spain
| | - David Sucunza
- Departamento de Química Orgánica y Química Inorgánica, ‡Departamento de
Biología de Sistemas, §Departamento de Química Analítica,
Química Física e Ingeniería Química, Universidad de Alcalá, 28871-Alcalá de Henares,
Madrid, Spain
| | - Alberto Domingo
- Departamento de Química Orgánica y Química Inorgánica, ‡Departamento de
Biología de Sistemas, §Departamento de Química Analítica,
Química Física e Ingeniería Química, Universidad de Alcalá, 28871-Alcalá de Henares,
Madrid, Spain
| | - Francisco Mendicuti
- Departamento de Química Orgánica y Química Inorgánica, ‡Departamento de
Biología de Sistemas, §Departamento de Química Analítica,
Química Física e Ingeniería Química, Universidad de Alcalá, 28871-Alcalá de Henares,
Madrid, Spain
| | - Julio Alvarez-Builla
- Departamento de Química Orgánica y Química Inorgánica, ‡Departamento de
Biología de Sistemas, §Departamento de Química Analítica,
Química Física e Ingeniería Química, Universidad de Alcalá, 28871-Alcalá de Henares,
Madrid, Spain
| | - Juan J. Vaquero
- Departamento de Química Orgánica y Química Inorgánica, ‡Departamento de
Biología de Sistemas, §Departamento de Química Analítica,
Química Física e Ingeniería Química, Universidad de Alcalá, 28871-Alcalá de Henares,
Madrid, Spain
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Kumar V, Bhat ZA, Kumar D. Animal models of anxiety: A comprehensive review. J Pharmacol Toxicol Methods 2013; 68:175-183. [DOI: 10.1016/j.vascn.2013.05.003] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 04/14/2013] [Accepted: 05/09/2013] [Indexed: 11/28/2022]
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Herrmann AP, Lunardi P, Pilz LK, Tramontina AC, Linck VM, Okunji CO, Gonçalves CA, Elisabetsky E. Effects of the putative antipsychotic alstonine on glutamate uptake in acute hippocampal slices. Neurochem Int 2012; 61:1144-50. [PMID: 22940693 DOI: 10.1016/j.neuint.2012.08.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Revised: 08/13/2012] [Accepted: 08/15/2012] [Indexed: 11/28/2022]
Abstract
A dysfunctional glutamatergic system is thought to be central to the negative symptoms and cognitive deficits recognized as determinant to the poor quality of life of people with schizophrenia. Modulating glutamate uptake has, thus, been suggested as a novel target for antipsychotics. Alstonine is an indole alkaloid sharing with atypical antipsychotics the profile in animal models relevant to schizophrenia, though divergent in its mechanism of action. The aim of this study was to evaluate the effects of alstonine on glutamate uptake. Additionally, the effects on glutathione content and extracellular S100B levels were assessed. Acute hippocampal slices were incubated with haloperidol (10μM), clozapine (10 and 100μM) or alstonine (1-100μM), alone or in combination with apomorphine (100μM), and 5-HT(2) receptor antagonists (0.01μM altanserin and 0.1μM SB 242084). A reduction in glutamate uptake was observed with alstonine and clozapine, but not haloperidol. Apomorphine abolished the effect of clozapine, whereas 5-HT(2A) and 5-HT(2C) antagonists abolished the effects of alstonine. Increased levels of glutathione were observed only with alstonine, also the only compound that failed to decrease the release of S100B. This study shows that alstonine decreases glutamate uptake, which may be beneficial to the glutamatergic deficit observed in schizophrenia. Noteworthily, the decrease in glutamate uptake is compatible with the reversal of MK-801-induced social interaction and working memory deficits. An additional potential benefit of alstonine as an antipsychotic is its ability to increase glutathione, a key cellular antioxidant reported to be decreased in the brain of patients with schizophrenia. Adding to the characterization of the novel mechanism of action of alstonine, the lack of effect of apomorphine in alstonine-induced changes in glutamate uptake reinforces that D(2) receptors are not primarily implicated. Though clearly mediated by 5-HT(2A) and 5-HT(2C) serotonin receptors, the precise mechanisms that result in the effects of alstonine on glutamate uptake warrant elucidation.
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Affiliation(s)
- Ana P Herrmann
- Departamento de Farmacologia, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite, Porto Alegre, RS, Brazil.
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Baliga MS. Review of the phytochemical, pharmacological and toxicological properties of Alstonia Scholaris Linn. R. Br (Saptaparna). Chin J Integr Med 2012. [PMID: 22457172 DOI: 10.1007/s11655-011-0947-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Indexed: 01/11/2023]
Abstract
The use of ethnornedical information has immensely contributed to health care, and scientific studies have shown that the evaluation of traditionally used medicines may provide leads towards effective drug discovery. Since antiquity, Alstonia scholaris connmonly known as devil's tree has been used for the treatment of many human ailments. Literature suggests that Alstonia scholaris is useful in treating malaria, abdominal disorders, dyspepsia, leprosy, skin diseases, tumors, chronic and foul ulcers, asthma, bronchitis, helminthiasis, agalactia, and debility. Preclinical studies have shown that it possesses anti-microbial, anti-diarrhoeal, anti-plasmodial, anti-oxidant, anti-inflammatory hepatoprotective, nootrophic, anti-stress, anti-fertility, immunomodulatory, analgesic, anti-ulcer, wound healing, anti-cancer, chemopreventive, radiation protection, radiation sensitization, and chemosensitization activities. The diverse pharmacological observations are supposed to be due to the presence of alkaloids, flavonoids and phenolic acids. The bark and leaf extract when administered orally did not induce lethality or adverse affects at the limit doses of 2 000 mg/kg body weight. However when administered intraperitoneally at high concentrations, the extract showed systemic and developmental toxicities. This review addresses the experimentally authenticated facts and also suggests the need for research on chemical and pharmacological properties of Alstonia scholaris.
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Affiliation(s)
- Manjeshwar Shrinath Baliga
- Department of Research and Development, Father Muller Medical College, Father Muller Hospital Road, Kankanady, Mangalore, Karnataka, 575002, India,
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de Almeida AAC, Costa JP, de Carvalho RBF, de Sousa DP, de Freitas RM. Evaluation of acute toxicity of a natural compound (+)-limonene epoxide and its anxiolytic-like action. Brain Res 2012; 1448:56-62. [PMID: 22364736 DOI: 10.1016/j.brainres.2012.01.070] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2011] [Revised: 01/27/2012] [Accepted: 01/30/2012] [Indexed: 11/17/2022]
Abstract
The aim of the study is to determine the acute toxicity and anxiolytic-like effects of a mixture of cis and trans of (+)-limonene epoxide in animal models of anxiety. After acute treatment with (+)-limonene epoxide at doses of 25, 50 and 75 mg/kg (i.p.) no mortality was noted during 14 days of observation. In general, behavior, food and water consumption showed no significant changes. In open field test, (+)-limonene epoxide at doses of 25, 50 and 75 mg/kg, after intraperitoneal administration, significantly decreased the number of crossings, grooming and rearing (p<0.001). All these effects were reversed by the pre-treatment with flumazenil (25 mg/kg, i.p.), similar to those observed with diazepam used as a positive standard. In the elevated-plus-maze test, (+)-limonene epoxide increased the time of permanence and the number of entrances in the open arms. All these effects were reversed by flumazenil, an antagonist of benzodiazepine receptors. In addition, (+)-limonene epoxide (75 mg/kg) also produced a significant inhibition of the motor coordination (p<0.01), that was reversed by flumazenil. In conclusion, the present work evidenced sedative and anxiolytic-like effects of (+)-limonene epoxide, which might involve an action on benzodiazepine-type receptors. These results indicate that the properties of (+)-limonene epoxide should be more thoroughly examined in order to achieve newer tools for management and/or treatment of central nervous system diseases and anxiolytic-like effects. The LD50 obtained for the acute toxicity studies using intraperitoneal route of administration was 4.0 g/kg. These findings suggest that acute administration of the (+)-limonene epoxide exerts an anxiolytic-like effect on mice, and it could serve as a new approach for the treatment anxiety, since it practically does not produce toxic effects.
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Linck VM, Bessa MM, Herrmann AP, Iwu MM, Okunji CO, Elisabetsky E. 5-HT2A/C receptors mediate the antipsychotic-like effects of alstonine. Prog Neuropsychopharmacol Biol Psychiatry 2012; 36:29-33. [PMID: 21925231 DOI: 10.1016/j.pnpbp.2011.08.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 08/11/2011] [Accepted: 08/31/2011] [Indexed: 11/25/2022]
Abstract
The purpose of this study was to determine the effects of alstonine, an indole alkaloid with putative antipsychotic effects, on working memory by using the step-down inhibitory avoidance paradigm and MK801-induced working memory deficits in mice. Additionally, the role of serotonin 5-HT2A/C receptors in the effects of alstonine on mouse models associated with positive (MK801-induced hyperlocomotion), negative (MK801-induced social interaction deficit), and cognitive (MK801-induced working memory deficit) schizophrenia symptoms was examined. Treatment with alstonine was able to prevent MK801-induced working memory deficit, indicating its potential benefit for cognitive deficits now seen as a core symptom in the disease. Corroborating previously reported data, alstonine was also effective in counteracting MK801-induced hyperlocomotion and social interaction deficit. Ritanserin, a 5-HT2A/C receptor antagonist, prevented alstonine's effects on these three behavioral parameters. This study presents additional evidence that 5-HT2A/C receptors are central to the antipsychotic-like effects of alstonine, consistently seen in mouse models relevant to the three dimensions of schizophrenia symptoms.
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Affiliation(s)
- V M Linck
- Laboratório de Etnofarmacologia, Depto de Farmacologia, ICBS, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500/202, 90050-170, Porto Alegre, RS, Brazil.
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17
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Linck VM, Herrmann AP, Piato AL, Detanico BC, Figueiró M, Flório J, Iwu MM, Okunji CO, Leal MB, Elisabetsky E. Alstonine as an antipsychotic: effects on brain amines and metabolic changes. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2011:418597. [PMID: 19189988 PMCID: PMC3140158 DOI: 10.1093/ecam/nep002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2008] [Accepted: 01/12/2009] [Indexed: 01/08/2023]
Abstract
Managing schizophrenia has never been a trivial matter. Furthermore, while classical antipsychotics induce extrapyramidal side effects and hyperprolactinaemia, atypical antipsychotics lead to diabetes, hyperlipidaemia, and weight gain. Moreover, even with newer drugs, a sizable proportion of patients do not show significant improvement. Alstonine is an indole alkaloid identified as the major component of a plant-based remedy used in Nigeria to treat the mentally ill. Alstonine presents a clear antipsychotic profile in rodents, apparently with differential effects in distinct dopaminergic pathways. The aim of this study was to complement the antipsychotic profile of alstonine, verifying its effects on brain amines in mouse frontal cortex and striatum. Additionally, we examined if alstonine induces some hormonal and metabolic changes common to antipsychotics. HPLC data reveal that alstonine increases serotonergic transmission and increases intraneuronal dopamine catabolism. In relation to possible side effects, preliminary data suggest that alstonine does not affect prolactin levels, does not induce gains in body weight, but prevents the expected fasting-induced decrease in glucose levels. Overall, this study reinforces the proposal that alstonine is a potential innovative antipsychotic, and that a comprehensive understanding of its neurochemical basis may open new avenues to developing newer antipsychotic medications.
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Affiliation(s)
- Viviane M Linck
- Laboratório de Etnofamacologia, ICBS, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500/202, 90050-170 Porto Alegre, RS, Brazil
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Bisong SA, Brown R, Osim EE. Comparative effects of Rauwolfia vomitoria and chlorpromazine on locomotor behaviour and anxiety in mice. JOURNAL OF ETHNOPHARMACOLOGY 2010; 132:334-339. [PMID: 20800668 DOI: 10.1016/j.jep.2010.08.045] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Revised: 08/07/2010] [Accepted: 08/19/2010] [Indexed: 05/29/2023]
Abstract
AIM OF THE STUDY Since remedies for mental disorders have been sought through both orthodox and traditional medicine this study compared the effects of the antipsychotic, chlorpromazine (Cpz), the herb Rauwolfia vomitoria (RV) and its alkaloid reserpine (Res) in mice. MATERIALS AND METHODS Ninety male CD-1 strain of mice (75-80 days old; 30-34 g body weight) were divided into 3 major groups and each consisting 5 subgroups (n=6). Cpz (0.0, 0.25, 1.0, 2.0 and 4.0 mg/kg, i.p.), was administered 30 min before testing. RV (0.0, 0.25, 1.0, 2.0 and 4.0 mg/kg, i.p.) and Res (0.0, 0.1, 0.4, 0.8, 1.6 mg/kg, i.p.) were administered 24 h before testing. The open field test was used to assess locomotor and exploratory behaviour, acceleratory rotarod for motor coordination, light/dark box for anxiety. RESULTS CPZ dose-dependently decreased locomotor and exploration behaviour and impaired motor coordination (p<0.01). RV also decreased locomotor behaviour at 4.0 mg/kg (p<0.5) but did not alter exploration and motor coordination. Res however, decreased locomotion and exploration and impaired motor coordination 0.8 and 1.6 mg/kg (p<0.05). In the light/dark box, CPZ increased anxiety related behaviour at 1.0, 2.0 mg/kg (p<0.05) whereas RV dose-dependently decreased anxiety from 1.0 to 4.0 mg/kg (p<0.01). Res, unlike RV, dose-dependently increased anxiety related behaviour from 0.4 to 1.6 mg/kg. CONCLUSION Root bark extract from Rauwolfia vomitoria produced better behavioural effects with less distortion in motor coordination when compared to chlorpromazine and so has a great potential as an alternative antipsychotic agent compared to chlorpromazine. Since Res did not produce same effects as RV, the effect of RV may not be due solely to Res as claimed.
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Affiliation(s)
- Sunday Agba Bisong
- Department of Physiology, College of Medical Sciences, University of Calabar, Calabar PMB 1115, Nigeria.
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Kumar S, Madaan R, Sharma A. Pharmacological evaluation of Bioactive Principle of Turnera aphrodisiaca. Indian J Pharm Sci 2008; 70:740-4. [PMID: 21369434 PMCID: PMC3040867 DOI: 10.4103/0250-474x.49095] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2008] [Revised: 09/02/2008] [Accepted: 11/21/2008] [Indexed: 11/25/2022] Open
Abstract
In the present investigation, pharmacological evaluation of apigenin, a bioactive principle of Turnera aphrodisiaca Ward (Turneraceae) was carried out. Apigenin was evaluated for antianxiety activity at a dose of 2 mg/kg using well established models of anxiety, the hole board test, light/dark test and mirrored chamber test. Apigenin significantly increased head dipping in hole board test. Further, apigenin increased latency to leave light zone and the time spent in light compartment of light/dark model of anxiety. Apigenin also decreased the latency time to enter the mirrored chamber, and increased the total time spent/number of entries in the mirrored chamber with respect to control. All these observations confirmed the anxiolytic activity of apigenin. At a higher dose (about 12 fold the anxiolytic dose), apigenin showed mild sedative activity in actophotometer as it decreased activity scores. It (2, 5 or 10 mg/kg) was found to be devoid of anticonvulsant, antidepressant and antistress activity in MES-induced convulsion test, despair swim test and cold swimming endurance test, respectively. In tail immersion test for six hours, apigenin exhibited excellent dose dependent analgesic activity, which was comparable to that of morphine sulphate (5 mg/kg). Maximum activity was observed 30 min after the administration of 10 mg/kg dose of apigenin.
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Affiliation(s)
- S. Kumar
- S. D. College of Pharmacy, Barnala-148 101, Punjab, India
| | - R. Madaan
- S. D. College of Pharmacy, Barnala-148 101, Punjab, India
| | - A. Sharma
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh-160 014, India
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Cristiano MP, Cardoso DC, da Silva Paula MM, Costa-Campos L. Antinociceptive effect of a ruthenium complex in mice. ACTA ACUST UNITED AC 2008; 28:103-8. [DOI: 10.1111/j.1474-8673.2008.00423.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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21
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da Silva AL, Ferreira JG, da Silva Martins B, Oliveira S, Mai N, Nunes DS, Elisabetsky E. Serotonin receptors contribute to the promnesic effects of P. olacoides (Marapuama). Physiol Behav 2008; 95:88-92. [DOI: 10.1016/j.physbeh.2008.04.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2007] [Revised: 02/29/2008] [Accepted: 04/22/2008] [Indexed: 10/22/2022]
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22
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de Moura Linck V, Herrmann AP, Goerck GC, Iwu MM, Okunji CO, Leal MB, Elisabetsky E. The putative antipsychotic alstonine reverses social interaction withdrawal in mice. Prog Neuropsychopharmacol Biol Psychiatry 2008; 32:1449-52. [PMID: 18539376 DOI: 10.1016/j.pnpbp.2008.04.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2008] [Revised: 03/27/2008] [Accepted: 04/22/2008] [Indexed: 11/28/2022]
Abstract
Negative symptoms of schizophrenia are particularly problematic due to their deleterious impact on a patient's social life. The indol alkaloid alstonine, the major component of traditional remedies used for treating mental illnesses in Nigeria, presents a clear antipsychotic-like profile in mice, as well as anxiolytic properties. Considering that social interaction is the core of negative symptoms, and that anxiolytic drugs can improve social interaction behavior, the aim of this study was to evaluate the effects of alstonine in the social interaction and MK801-induced social withdrawal models in mice. Sub-chronic (but not acute) treatment with alstonine 0.5 mg/kg (but not 1.0 mg/kg) significantly increased social interaction in mice. Moreover, MK801-induced social withdrawal was completely prevented by sulpiride (10 mg/kg) and alstonine 1.0 mg/kg, and partially prevented by alstonine 0.5 mg/kg. The study indicates that alstonine not only increases social interaction in normal mice, but also averts social deficits attributable to negative symptoms of schizophrenia. This study reinforces and complements the antipsychotic-like profile of alstonine, and emphasizes its potential as a drug useful for the management of negative symptoms in schizophrenia.
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Affiliation(s)
- Viviane de Moura Linck
- Laboratório de Etnofamacologia, ICBS, Universidade Federal do Rio Grande do Sul, Rua Sarmento Leite 500/202, 90050-170, Porto Alegre, RS, Brazil.
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23
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Rodrigues E, Tabach R, GaldurÓz JCF, Negri G. Plants With Possible Anxiolytic and/or Hypnotic Effects Indicated by Three Brazilian Cultures - Indians, Afro-Brazilians, and River-Dwellers. BIOACTIVE NATURAL PRODUCTS (PART O) 2008. [DOI: 10.1016/s1572-5995(08)80014-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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24
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Lipińska TM. Total synthesis of new indolo[2,3-a]quinolizine alkaloids sempervirine type, potential pharmaceuticals. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.03.085] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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O'Connor SE, Maresh JJ. Chemistry and biology of monoterpene indole alkaloid biosynthesis. Nat Prod Rep 2006; 23:532-47. [PMID: 16874388 DOI: 10.1039/b512615k] [Citation(s) in RCA: 681] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Sarah E O'Connor
- Department of Chemistry, Massachusetts Institute of Technology, Building 18-592, Cambridge, MA 02139-4307, USA.
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26
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Both FL, Meneghini L, Kerber VA, Henriques AT, Elisabetsky E. Role of glutamate and dopamine receptors in the psychopharmacological profile of the indole alkaloid psychollatine. JOURNAL OF NATURAL PRODUCTS 2006; 69:342-5. [PMID: 16562831 DOI: 10.1021/np050291v] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Psychollatine (1), a new glycoside indole monoterpene alkaloid isolated from Psychotria umbellata, has shown an interesting psychopharmacological profile. This study aimed to investigate the role of NMDA glutamate and dopamine receptors in mediating the properties of 1. Psychollatine (1) was assessed for NMDA-induced seizures, MK-801-induced hyperlocomotion, amphetamine-induced lethality, and apomorphine-induced climbing behavior in mice. Psychollatine (1) (100 mg/kg) and MK-801 (0.3 mg/kg) prevented NMDA-induced seizures (P < 0.01), while 1 (100 mg/kg) attenuated the MK-801-induced hyperlocomotion (P < 0.05). Compound 1 (3 and 10 mg/kg), as well as chlorpromazine (4 mg/kg), prevented amphetamine-induced lethality (P < 0.05). Finally, 1 (10 mg/kg) (P < 0.05), MK-801 (0.2 mg/kg) (P < 0.01), and chlorpromazine (4 mg/kg) (P < 0.01) attenuated apomorphine-induced climbing behavior. The present results strongly support the involvement of NMDA glutamate receptors in the mode of action of psychollatine (1).
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Affiliation(s)
- Fernanda L Both
- Curso de Pós-graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, Brazil
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27
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Elisabetsky E, Costa-Campos L. The alkaloid alstonine: a review of its pharmacological properties. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2006; 3:39-48. [PMID: 16550222 PMCID: PMC1375234 DOI: 10.1093/ecam/nek011] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2005] [Accepted: 12/26/2005] [Indexed: 11/26/2022]
Abstract
Indole compounds, related to the metabolism of tryptophan, constitute an extensive family, and are found in bacteria, plants and animals. Indolic compounds possess significant and complex physiological roles, and especially indole alkaloids have historically constituted a class of major importance in the development of new plant derived drugs. The indole alkaloid alstonine has been identified as the major component of a plant-based remedy, used in Nigeria to treat mental illnesses by traditional psychiatrists. Although it is certainly difficult to compare the very concept of mental disorders in different cultures, the traditional use of alstonine is remarkably compatible with its profile in experimental animals. Even though alstonine in mice models shows a psychopharmacological profile closer to the newer atypical antipsychotic agents, it also shows important differences and what seems to be an exclusive mechanism of action, not entirely clarified at this point. Considering the seemingly unique mode of action of alstonine and that its traditional use can be viewed as indicative of bioavailability and safety, this review focuses on the effects of alstonine in the central nervous system, particularly on its unique profile as an antipsychotic agent. We suggest that a thorough understanding of traditional medical concepts of health and disease in general and traditional medical practices in particular, can lead to true innovation in paradigms of drug action and development. Overall, the study of this unique indole alkaloid may be considered as another example of the richness of medicinal plants and traditional medical systems in the discovery of new prototypic drugs.
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Affiliation(s)
- E Elisabetsky
- Laboratório de Etnofarmacologia, ICBS, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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28
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Both FL, Meneghini L, Kerber VA, Henriques AT, Elisabetsky E. Psychopharmacological profile of the alkaloid psychollatine as a 5HT2A/C serotonin modulator. JOURNAL OF NATURAL PRODUCTS 2005; 68:374-380. [PMID: 15787439 DOI: 10.1021/np049695y] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Behavioral effects of psychollatine, a new glycoside indole monoterpene alkaloid isolated from Psychotria umbellata, was investigated in models of anxiety, depression, memory, tremor, and sedation related to 5-HT and/or GABA neurotransmission. The GABA antagonist picrotoxin and the 5-HT2 antagonist ritanserin were used to examine the role of GABA and 5-HT2 receptors in psychollatine-induced effects. In the light/dark and hole-board models of anxiety, diazepam (0.75 mg/kg) and psychollatine (7.5 and 15 mg/kg) showed anxiolytic-like effect at doses that do not increase sleeping time nor alter spontaneous locomotor activity. The anxiolytic effect of psychollatine was prevented by prior administration of ritanserin, but not of picrotoxin, indicating that 5-HT2 but not GABA receptors are implicated. In the forced swimming model of depression, psychollatine (3 and 7.5 mg/kg) effects were comparable to the antidepressants imipramine (15 mg/kg) and fluoxetine (20 mg/kg). Psychollatine suppressed oxotremorine-induced tremors in all doses. In the step-down learning paradigm, diazepam (0.85 mg/kg), MK-801 (0.15 mg/kg), and psychollatine 100 mg/kg impaired the acquisition of learning and memory consolidation, without interfering with retrieval. It is concluded that the effects of psychollatine at the central nervous system involve serotonergic 5HT2(A/C) receptors.
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Affiliation(s)
- Fernanda L Both
- Curso de Pós-graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS, Brazil
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29
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Costa-Campos L, Iwu M, Elisabetsky E. Lack of pro-convulsant activity of the antipsychotic alkaloid alstonine. JOURNAL OF ETHNOPHARMACOLOGY 2004; 93:307-310. [PMID: 15234769 DOI: 10.1016/j.jep.2004.03.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2004] [Revised: 02/27/2004] [Accepted: 03/26/2004] [Indexed: 05/24/2023]
Abstract
Psychiatry co-morbidity with epilepsy is common and often requires the combined use of psychotropic and antiepileptic drugs (AEDs). For schizophrenic patients, the occurrence of seizures with atypical agents is highest among antipsychotics, although these agents are more effective in alleviating symptoms (including negative symptoms) and are associated with fewer extrapiramidal effects. The indol alkaloid alstonine is the major component of plants used by traditional Nigerian psychiatrists as anti-dementia drugs. The alkaloid presents an experimental profile very similar to the atypical antipsychotic clozapine. This study aimed to compare the pro-convulsant activity of these two antipsychotic compounds. Through repetitive administration over a 30-day period in a kindling paradigm, it is shown that, unlike clozapine, alstonine does not possess pro-convulsant activity. The data adds to previous suggestions that alstonine deserves to be scrutinized as a model for the development of newer antipsychotics.
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Affiliation(s)
- Luciane Costa-Campos
- UNESC, Departmento de Farmacia, Av. Universitaria 1105, 88806-00 Criciuma, SC, Brazil.
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