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Zhang J, Yuan MF, Li ST, Sang CC, Chen MF, Ao YL, Li ZW, Xie J, Ye WC, Zhang XQ. Hunzeylanines A-E, Five Bisindole Alkaloids Tethered with a Methylene Group from the Roots of Hunteria zeylanica. J Org Chem 2020; 85:10884-10890. [PMID: 32806090 DOI: 10.1021/acs.joc.0c01448] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Five novel bisindole alkaloids, hunzeylanines A-E (1-5), with an unprecedented skeleton were isolated from the roots of Hunteria zeylanica. Compounds 1-5 represent the first examples of akuammine-pleioarpamine-type bisindole alkaloids fused with a dihydropyran unit. Their structures including absolute configurations were established through comprehensive spectroscopic data analyses and computational calculation methods. The plausible biogenetic pathway of 1 was also proposed. Alkaloids 1 and 2 displayed moderate cytotoxicity toward three human cancer cell lines (MDA-MB-231, AV3, and Huh7).
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Affiliation(s)
- Jian Zhang
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, P. R. China
| | - Meng-Fei Yuan
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, P. R. China
| | - Song-Tao Li
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, P. R. China
| | - Chen-Chen Sang
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, P. R. China
| | - Min-Feng Chen
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, P. R. China
| | - Yun-Lin Ao
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, P. R. China
| | - Zi-Wei Li
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, P. R. China
| | - Jing Xie
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, P. R. China
| | - Wen-Cai Ye
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, P. R. China
| | - Xiao-Qi Zhang
- Institute of Traditional Chinese Medicine & Natural Products, and Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM & New Drugs Research, Jinan University, Guangzhou 510632, P. R. China
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Bao MF, Zeng CX, Liu YP, Zhang BJ, Ni L, Luo XD, Cai XH. Indole Alkaloids from Hunteria zeylanica. JOURNAL OF NATURAL PRODUCTS 2017; 80:790-797. [PMID: 28362501 DOI: 10.1021/acs.jnatprod.5b01035] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Six new bisindole alkaloids, hunterizeylines A-F (1-6), three new monomers, hunterizeylines G-I (7-9), and 13 known alkaloids were isolated from an aqueous MeOH extract of the twigs and leaves of Hunteria zeylanica. Hunterizeyline H, geissoschizol, and dihydrocorynantheol displayed weak insecticidal activity against the aphid Rhodobium porosum, with IC50 values of 168.2, 360.5, and 290.6 μM, respectively.
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Affiliation(s)
- Mei-Fen Bao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
- Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201, People's Republic of China
| | - Chun-Xia Zeng
- Germplasm Bank of Wild Species in Southwest China, Kunming Institute of Botany , Kunming 650201, People's Republic of China
| | - Ya-Ping Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
- Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201, People's Republic of China
| | - Bing-Jie Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
- Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201, People's Republic of China
| | - Ling Ni
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
- Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201, People's Republic of China
| | - Xiao-Dong Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
- Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201, People's Republic of China
| | - Xiang-Hai Cai
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, People's Republic of China
- Yunnan Key Laboratory of Natural Medicinal Chemistry , Kunming 650201, People's Republic of China
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Araújo-Filho HG, Dias JDS, Quintans-Júnior LJ, Santos MRV, White PAS, Barreto RSS, Barreto AS, Estevam CS, Araujo SS, Almeida JRGS, Menezes IRA, Coutinho HDM, Quintans JSS. Phytochemical screening and analgesic profile of the lyophilized aqueous extract obtained from Chrysobalanus icaco leaves in experimental protocols. PHARMACEUTICAL BIOLOGY 2016; 54:3055-3062. [PMID: 27892848 DOI: 10.1080/13880209.2016.1204618] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 06/18/2016] [Indexed: 06/06/2023]
Abstract
CONTEXT Chrysobalanus icaco L. (Chrysobalanaceae) has been used for the treatment of abdominal pain and cramps. OBJECTIVE Assess the chemical and pharmacological profile of the lyophilized aqueous extract from C. icaco leaves (AEC). MATERIALS AND METHODS Chromatographic methods were used to assess compounds from AEC. Mice were treated with vehicle (control group) or AEC (100, 200 or 400 mg/kg, p.o.) (group with 7-8 mice) and the analgesic profile was assessed employing the acetic acid-induced writhing, formalin, hot plate tests and hyperalgesia induced by carrageenan (CG) or tumour necrosis factor-alpha. The animal motor performance was assessed using rota-rod and grip strength tests. RESULTS The chromatographic profile of AEC demonstrated the presence of terpenoid compounds. The acute pretreatment with AEC, at all doses, produced a significant (p < 0.01) inhibition of painful bahaviour (11.4 ± 3.6; 10.3 ± 2.8; 11.3 ± 2.2) when compared to the control group (24.7 ± 4.7) in acetic acid-induced writhing test. In the formalin test, AEC were effective in the second phase (p < 0.01) (57.2 ± 10.3; 56.3 ± 9.2; 54.7 ± 8.9) when compared to control group (121.9 ± 18.5). No response was observed in the hot plate test. The higher dose of AEC produced a significant (p < 0.01 or p < 0.05) inhibitory effect on the mechanical hyperalgesia test. AEC did not affect the motor performance of the mice. DISCUSSION The terpenoids from AEC are known for its analgesic and anti-inflammatory properties. So, these results corroborate the experiments using the AEC in inflammatory pain protocols. CONCLUSION Our results suggest that AEC act against inflammatory pain.
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Affiliation(s)
- Heitor G Araújo-Filho
- a Department of Physiology , Federal University of Sergipe , São Cristóvão , SE , Brazil
| | | | | | - Márcio R V Santos
- a Department of Physiology , Federal University of Sergipe , São Cristóvão , SE , Brazil
| | - Pollyanna A S White
- a Department of Physiology , Federal University of Sergipe , São Cristóvão , SE , Brazil
| | - Rosana S S Barreto
- a Department of Physiology , Federal University of Sergipe , São Cristóvão , SE , Brazil
| | - André S Barreto
- a Department of Physiology , Federal University of Sergipe , São Cristóvão , SE , Brazil
| | - Charles S Estevam
- a Department of Physiology , Federal University of Sergipe , São Cristóvão , SE , Brazil
| | - Silvan S Araujo
- a Department of Physiology , Federal University of Sergipe , São Cristóvão , SE , Brazil
| | - Jackson R G S Almeida
- b Department of Pharmaceutical Sciences , Federal University of Vale do São Francisco , Petrolina , PE , Brazil
| | - Irwin R A Menezes
- c Department of Biological Chemistry , Regional University of Cariri , Crato , CE , Brazil
| | - Henrique D M Coutinho
- c Department of Biological Chemistry , Regional University of Cariri , Crato , CE , Brazil
| | - Jullyana S S Quintans
- a Department of Physiology , Federal University of Sergipe , São Cristóvão , SE , Brazil
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Silva JC, Almeida JR, Quintans JS, Gopalsamy RG, Shanmugam S, Serafini MR, Oliveira MR, Silva BA, Martins AO, Castro FF, Menezes IR, Coutinho HD, Oliveira RC, Thangaraj P, Araújo AA, Quintans-Júnior LJ. Enhancement of orofacial antinociceptive effect of carvacrol, a monoterpene present in oregano and thyme oils, by β-cyclodextrin inclusion complex in mice. Biomed Pharmacother 2016; 84:454-461. [DOI: 10.1016/j.biopha.2016.09.065] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 09/16/2016] [Accepted: 09/17/2016] [Indexed: 12/21/2022] Open
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Liu Q, Chen CJ, Zhang L, Gao K. Two new indole alkaloids from Hunteria zeylanica. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2015; 18:349-353. [PMID: 26667775 DOI: 10.1080/10286020.2015.1092961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Two new indole alkaloids, 14β-hydroperoxy-eburnamine (1) and 18α-hydroxy-eburnamine (2), together with three known indole alkaloids, (-)-eburnamonine (3), (-)-eburnamenine (4), and eburnamine (5) were isolated from Hunteria zeylanica collected in Hainan Province of China. Their structures were determined by spectroscopic analysis. The relative configuration of 2 was deduced by NOE experiment and evidenced by the calculations for energy minimization with the molecular modeling program Chem3D Ultra 10.0.
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Affiliation(s)
- Quan Liu
- a State Key Laboratory of Grassland Agro-Ecosystems, College of Pastoral Agriculture Science and Technology , Lanzhou University , Lanzhou 730020 , China
| | - Chao-Jun Chen
- b State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Li Zhang
- b State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
| | - Kun Gao
- b State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , China
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ARAÚJO ÉVERTONJOSÉFERREIRADE, OLIVEIRA GUILHERMEANTÔNIOLOPESDE, SOUSA LÍVIAQUEIROZDE, BOLZANI VANDERLANDASILVA, CAVALHEIRO ALBERTOJOSÉ, TOME ADRIANADAROCHA, PERON ANAPAULA, SANTOS ANDRÉGONZAGADOS, CITÓ ANTONIAMARIADASGRAÇASLOPES, PESSOA CLÁUDIA, FREITAS RIVELILSONMENDESDE, FERREIRA PAULOMICHELPINHEIRO. Counteracting effects on free radicals and histological alterations induced by a fraction with casearins. ACTA ACUST UNITED AC 2015; 87:1791-807. [DOI: 10.1590/0001-3765201520150149] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ABSTRACTCasearia sylvestris Swartz is a medicinal plant widely distributed in Brazil. It has anti-inflammatory, antiulcer and antitumor activities and is popularly used to treat snakebites, wounds, diarrhea, flu and chest colds. Its leaves are rich in oxygenated tricyclic cis-clerodane diterpenes, particulary casearins. Herein, we evaluated the antioxidant activities of a fraction with casearins (FC) isolated from C. sylvestrisand histological changes on the central nervous system and livers of Mus musculus mice. Firstly, in vitro studies (0.9, 1.8, 3.6, 5.4 and 7.2 μg/mL) revealed EC50 values of 3.7, 6.4 and 0.16 µg/mL for nitrite, hydroxyl radical and TBARS levels, respectively. Secondly, FC (2.5, 5, 10 and 25 mg/kg/day) was intraperitoneally administered to Swiss mice for 7 consecutive days. Nitrite levels in the hippocampus (26.2, 27.3, 30.2 and 26.6 µM) and striatum (26.3, 25.4, 34.3 and 27.5 µM) increased in all treated animals (P < 0.05). Lower doses dropped reduced glutathione, catalase and TBARS levels in the hippocampus and striatum. With the exception of this reduction in TBARS formation, FC displayed only in vitro antioxidant activity. Animals exhibited histological alterations suggestive of neurotoxicity and hepatotoxicity, indicating the need for precaution regarding the consumption of medicinal formulations based on Casearia sylvestris.
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Quintans JSS, Brito RG, Aquino PGV, França PHB, Siqueira-Lima PS, Santana AEG, Ribeiro EAN, Salvador MJ, Araújo-Júnior JX, Quintans-Júnior LJ. Antinociceptive activity of Syzygium cumini leaves ethanol extract on orofacial nociception protocols in rodents. PHARMACEUTICAL BIOLOGY 2014; 52:762-766. [PMID: 24559393 DOI: 10.3109/13880209.2013.870582] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
CONTEXT Syzygium cumini (L.) Skeels (Myrtaceae) is a tree with dark purple fruits, popularly known as "jambolão" or "jambolan". In folk medicine, this plant is used for the treatment of diabetes and inflammatory conditions. OBJECTIVE We investigated the antinociceptive effect of ethanol extract (EE) from S. cumini leaves on orofacial nociception. MATERIAL AND METHODS The antinociceptive effects of the EE obtained from the leaves of S. cumini were evaluated in mice using formalin- and glutamate-induced orofacial nociception. RESULTS ESI-MS/MS analyses demonstrated that major constituents in the analyzed samples coincided with the mass of the phenolic acids and flavonoids. In pharmacological approach, pre-treatment with EE (100, 200, or 400 mg/kg, p.o.) significantly reduced (p<0.05 or p<0.01) the percentage of paw licks time during phase 2 (43.2, 47.1, and 57.4%, respectively) of a formalin pain test when compared to control group animals. This effect was prevented by pretreatment with glibenclamide and N(G)-nitro-l-arginine (l-NOARG). The extract, all doses, also caused a marked inhibition (p<0.01 or p<0.001) of glutamate-induced orofacial nociception (38.8, 51.7, and 54.7%) when compared with the control group. No effect was observed with the rota-rod model. CONCLUSIONS We can suggest that the antinociceptive effect of the EE is mediated by peripheral mechanisms, possibly involving KATP channels and the nitric oxide pathways. These effects appear to be related to the presence of flavonoids compounds, such as quercetin.
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Affiliation(s)
- Jullyana S S Quintans
- Departamento de Fisiologia, Universidade Federal de Sergipe , São Cristóvão, Sergipe , Brazil
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Chemical Constituents from the Stems and Preliminary Antinociceptive Activity of Sabicea grisea var. grisea. Chem Nat Compd 2014. [DOI: 10.1007/s10600-014-0834-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Quintans JS, Costa EV, Tavares JF, Souza TT, Araújo SS, Estevam CS, Barison A, Cabral AG, Silva MS, Serafini MR, Quintans-Júnior LJ. Phytochemical study and antinociceptive effect of the hexanic extract of leaves from Combretum duarteanum and friedelin, a triterpene isolated from the hexanic extract, in orofacial nociceptive protocols. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2014. [DOI: 10.1590/0102-695x20142413347] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Antinociceptive and Antioxidant Activities of Phytol In Vivo and In Vitro Models. NEUROSCIENCE JOURNAL 2013; 2013:949452. [PMID: 26317107 PMCID: PMC4437258 DOI: 10.1155/2013/949452] [Citation(s) in RCA: 140] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 05/12/2013] [Accepted: 05/14/2013] [Indexed: 12/12/2022]
Abstract
The objective of the present study was to evaluate the antinociceptive effects of phytol using chemical and thermal models of nociception in mice and to assess its antioxidant effects in vitro. Phytol was administered intraperitoneally (i.p.) to mice at doses of 25, 50, 100, and 200 mg/kg. In the acetic acid-induced writhing test, phytol significantly reduced the number of contortions compared to the control group (P < 0.001). In the formalin test, phytol reduced significantly the amount of time spent in paw licking in both phases (the neurogenic and inflammatory phases), this effect being more pronounced in the second phase (P < 0.001). Phytol also provoked a significant increase in latency in the hot plate test. These antinociceptive effects did not impaire the motor performance, as shown in the rotarod test. Phytol demonstrated a strong antioxidant effect in vitro in its capacity to remove hydroxyl radicals and nitric oxide as well as to prevent the formation of thiobarbituric acid reactive substances (TBARS). Taken as a whole, these results show the pronounced antinociceptive effects of phytol in the nociception models used, both through its central and peripheral actions, but also its antioxidant properties demonstrated in the in vitro methods used.
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Almeida JRGDS, Souza GR, Silva JC, Saraiva SRGDL, Júnior RGDO, Quintans JDSS, Barreto RDSS, Bonjardim LR, Cavalcanti SCDH, Quintans LJ. Borneol, a bicyclic monoterpene alcohol, reduces nociceptive behavior and inflammatory response in mice. ScientificWorldJournal 2013; 2013:808460. [PMID: 23710149 PMCID: PMC3654274 DOI: 10.1155/2013/808460] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Accepted: 03/08/2013] [Indexed: 12/15/2022] Open
Abstract
Borneol, a bicyclic monoterpene, has been evaluated for antinociceptive and anti-inflammatory activities. Antinociceptive and anti-inflammatory activities were studied by measuring nociception by acetic acid, formalin, hot plate, and grip strength tests, while inflammation was prompted by carrageenan-induced peritonitis. The rotarod test was used to evaluate motor coordination. Borneol produced a significant (P < 0.01) reduction of the nociceptive behavior at the early and late phases of paw licking and reduced the writhing reflex in mice (formalin and writhing tests, resp.). When the hot plate test was conducted, borneol (in higher dose) produced an inhibition (P < 0.05) of the nociceptive behavior. Such results were unlikely to be provoked by motor abnormality. Additionally, borneol-treated mice reduced the carrageenan-induced leukocytes migration to the peritoneal cavity. Together, our results suggest that borneol possess significant central and peripheral antinociceptive activity; it has also anti-inflammatory activity. In addition, borneol did not impair motor coordination.
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Silva OA, de Oliveira FRDAM, Lima TC, de Sousa DP, de Souza AA, de Freitas RM. Evaluation of the antioxidant effects in vitro of the isopulegone. ACTA ACUST UNITED AC 2012. [DOI: 10.5530/ax.2012.4.9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Gouveia MGS, Xavier MA, Barreto AS, Gelain DP, Santos JPA, Araújo AAS, Silva FA, Quintans JS, Agra MF, Cabral AGS, Tavares JF, Silva MS, Quintans-Júnior LJ. Antioxidant, antinociceptive, and anti-inflammatory properties of the ethanolic extract of Combretum duarteanum in rodents. J Med Food 2011; 14:1389-96. [PMID: 21663477 DOI: 10.1089/jmf.2010.0212] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The antioxidant, antinociceptive, and anti-inflammatory activities of the ethanolic extract from leaves of Combretum duarteanum (EEC) were assessed in rodents through in vitro tests. The antioxidant activity was investigated by using thiobarbituric acid reactive species (TBARS), hydroxyl radical-scavenging, and scavenging activity of nitric oxide assays. The antinociceptive activity was investigated by using acetic acid-induced writhing, formalin, and hot-plate tests in mice. The anti-inflammatory activity was assessed in rats by using the carrageenan-induced hind-paw edema test and arachidonic acid-induced paw edema test. EEC possesses a strong antioxidant potential according to the TBARS, nitric oxide, and hydroxyl radical-scavenging assays; it also presented scavenger activity in all in vitro tests. After intraperitoneal injection, EEC (100, 200, and 400 mg/kg) significantly reduced the number of writhes (38.1%, 90.6%, and 97.8%, respectively) in a writhing test and the number of paw licks during phase 1 (30.5% and 69.5%, higher doses) and phase 2 (38.1%, 90.6%, and 97.8%, all doses) of a formalin test when compared with the control group. Naloxone (1.5 mg/kg, intraperitoneally) antagonized the antinociceptive action of EEC (400 mg/kg), and this finding suggests participation of the opioid system. Administration of 200 and 400 mg/kg (intraperitoneally) of EEC exhibited an anti-inflammatory activity in the carrageenin test, which was based on interference with prostaglandin synthesis. This finding was confirmed by the arachidonic acid test. Together, these results indicate that properties of EEC might be further explored in the search for newer tools to treat painful inflammatory conditions, including those related to pro-oxidant states.
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Affiliation(s)
- Marcos G S Gouveia
- Department of Physiology, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil
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Antioxidant and antinociceptive effects of Citrus limon essential oil in mice. J Biomed Biotechnol 2011; 2011:678673. [PMID: 21660140 PMCID: PMC3110330 DOI: 10.1155/2011/678673] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Revised: 02/19/2011] [Accepted: 03/18/2011] [Indexed: 12/28/2022] Open
Abstract
The antioxidant and antinociceptive activities of Citrus limon essential oil (EO) were assessed in mice or in vitro tests. EO possesses a strong antioxidant potential according to the scavenging assays. Moreover, it presented scavenger activity against all in vitro tests. Orally, EO (50, 100, and 150 mg/kg) significantly reduced the number of writhes, and, at highest doses, it reduced the number of paw licks. Whereas naloxone antagonized the antinociceptive action of EO (highest doses), this suggested, at least, the participation of the opioid system. Further studies currently in progress will enable us to understand the action mechanisms of EO.
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Guimarães AG, Oliveira GF, Melo MS, Cavalcanti SC, Antoniolli AR, Bonjardim LR, Silva FA, Santos JPA, Rocha RF, Moreira JCF, Araújo AA, Gelain DP, Quintans-Júnior LJ. Bioassay-guided Evaluation of Antioxidant and Antinociceptive Activities of Carvacrol. Basic Clin Pharmacol Toxicol 2010; 107:949-57. [DOI: 10.1111/j.1742-7843.2010.00609.x] [Citation(s) in RCA: 136] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Bioassay-guided evaluation of antinociceptive effect of N-salicyloyltryptamine: a behavioral and electrophysiological approach. J Biomed Biotechnol 2010; 2010:230745. [PMID: 20976310 PMCID: PMC2952823 DOI: 10.1155/2010/230745] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Accepted: 08/25/2010] [Indexed: 12/04/2022] Open
Abstract
We investigated the antinociceptive and nerve excitability effects of the N-salicyloyltryptamine (NST) NST-treated mice exhibited a significant decrease in the number of writhes when 100 and 200 mg/kg (i.p.) were administered (i.p.). This effect was not antagonized by naloxone (1.5 mg/kg, i.p.). NST inhibited the licking response of the injected paw when 100 and 200 mg/kg were administered (i.p.) to mice in the first and second phases of the formalin test. Because the antinociceptive effects could be associated with neuronal excitability inhibition, we performed the single sucrose gap technique and showed that NST (3.57 mM) significantly reduced (29.2%) amplitude of the compound action potential (CAP) suggesting a sodium channel effect induced by NST. Our results demonstrated an antinociceptive activity of the NST that could be, at least in part, associated to the reduction of the action potential amplitude. NST might represent an important tool for pain management.
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Leite BLS, Bonfim RR, Antoniolli AR, Thomazzi SM, Araújo AAS, Blank AF, Estevam CS, Cambui EVF, Bonjardim LR, Albuquerque Júnior RLC, Quintans-Júnior LJ. Assessment of antinociceptive, anti-inflammatory and antioxidant properties of Cymbopogon winterianus leaf essential oil. PHARMACEUTICAL BIOLOGY 2010; 48:1164-1169. [PMID: 20738158 DOI: 10.3109/13880200903280000] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The present study investigated the antinociceptive, anti-inflammatory and antioxidant effects of the leaf essential oil (LEO) of Cymbopogon winterianus Jowitt (Poaceae). In the acetic acid-induced writhing and formalin tests, the LEO (50, 100, and 200 mg/kg, p.o.) significantly reduced (p < 0.05) the number of writhings and paw licking times in the first (0-5 min) and second (15-30 min) phases, respectively. In contrast, the LEO did not alter the latency time for mice licking the rear paws in hot-plate test. The LEO inhibited the carrageenan-induced neutrophil migration to the peritoneal cavity in a dose-dependent manner (35.5%, 42.8%, and 66.1% at doses of 50, 100, and 200 mg/kg, respectively, p < 0.001). Moreover, LEO exhibited higher scavenging activity toward 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals with an IC(50) (12.66 ± 0.56 μg/mL). Our present results demonstrated that the LEO has antinociceptive, anti-inflammatory, and antioxidant properties.
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Affiliation(s)
- Bárbara L S Leite
- Departamento de Fisiologia, Universidade Federal de Sergipe, Campus Universitário Prof. Aloísio de Campos, São Cristóvão, SE, Brazil
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Quintans Júnior LJ, Santana MT, Melo MS, de Sousa DP, Santos IS, Siqueira RS, Lima TC, Silveira GO, Antoniolli AR, Ribeiro LAA, Santos MRV. Antinociceptive and anti-inflammatory effects of Costus spicatus in experimental animals. PHARMACEUTICAL BIOLOGY 2010; 48:1097-1102. [PMID: 20695729 DOI: 10.3109/13880200903501822] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
CONTEXT Costus spicatus Swartz (Costaceae), commonly called "cana-do-brejo'" in Brazil's northeast, is a medicinal plant found in wet coastal forests. In folk medicine an infusion of the aerial parts is taken to treat inflammation and pain. OBJECTIVE The methanol extract obtained from the leaves of Costus spicatus (MECs) was evaluated for antinociceptive and anti-inflammatory activities. METHODS Analgesic and anti-inflammatory activities were studied by measuring nociception through acetic acid, formalin, and hot-plate tests, while inflammation was induced by carrageenan. All experiments were conducted with experimental animals. RESULTS AND DISCUSSION Following oral administration, MECs (100, 200, and 400 mg/kg) significantly reduced the number of writhes (52.8, 43.1, and 55.3%, respectively) in the writhing test and the number of paw licks during phase 1 (61.9, 54.1, and 92.1%) and phase 2 (62.5, 82.9, and 98.1%, all doses) during the formalin test when compared to the control group animals. The reaction time during the hot-plate test was increased significantly and was dose-dependent, whereas pretreatment with naloxone rigorously reduced the analgesic potential of MECs, which suggested participation of the opioid system in the modulation of pain induced by MECs. Such results were unlikely to be provoked by motor abnormality, as MECs-treated mice did not exhibit any performance alteration during the Rota-rod test. The administration of 200 and 400 mg/ kg (i.p.) of MECs exhibited an anti-inflammatory effect during the carrageenan test, which was based on interference with inflammatory mediator synthesis. CONCLUSION We conclude that MECs has antinociceptive and anti-inflammatory activities in rodents.
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Affiliation(s)
- Lucindo J Quintans Júnior
- Departamento de Fisiologia, Universidade Federal de Sergipe (DFS/UFS), São Cristóvão, Sergipe, Brazil.
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19
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Hirasawa Y, Hara M, Nugroho AE, Sugai M, Zaima K, Kawahara N, Goda Y, Awang K, Hadi AHA, Litaudon M, Morita H. Bisnicalaterines B and C, Atropisomeric Bisindole Alkaloids from Hunteria zeylanica, Showing Vasorelaxant Activity. J Org Chem 2010; 75:4218-23. [DOI: 10.1021/jo1006762] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Mayumi Hara
- Faculty of Pharmaceutical Sciences, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Alfarius E. Nugroho
- Faculty of Pharmaceutical Sciences, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Masatomo Sugai
- Faculty of Pharmaceutical Sciences, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Kazumasa Zaima
- Faculty of Pharmaceutical Sciences, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
| | - Nobuo Kawahara
- National Institute of Health Sciences, Kamiyoga 1-18-1, Setagaya-ku, Tokyo 158-8501, Japan
| | - Yukihiro Goda
- National Institute of Health Sciences, Kamiyoga 1-18-1, Setagaya-ku, Tokyo 158-8501, Japan
| | - Khalijah Awang
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - A. Hamid A. Hadi
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Marc Litaudon
- Institut de Chimie de la Substances Naturelles, Centre Nationale de la Recherches Scientifique, 91198, Gif-sur Yvette, Cedex, France
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
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20
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Melo MS, Sena LCS, Barreto FJN, Bonjardim LR, Almeida JRGS, Lima JT, De Sousa DP, Quintans-Júnior LJ. Antinociceptive effect of citronellal in mice. PHARMACEUTICAL BIOLOGY 2010; 48:411-416. [PMID: 20645719 DOI: 10.3109/13880200903150419] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Citronellal is a monoterpene reported to be a major component of the essential oils in various aromatic species of plants. The present study evaluated the central nervous system depressant and antinociceptive properties of citronellal through behavioral experimental models. Following intraperitoneal injection, citronellal induced the reduction of spontaneous activity, ataxia, analgesia, and sedation. In pentobarbital-induced hypnosis, CTL (citronellal) at 50, 100, and 200 mg/kg (i.p.) significantly increased sleeping time (88.0 +/- 11.4, 100.2 +/- 16.4, and 119.5 +/- 20.9 min) when compared to vehicle solution injections (43.0 +/- 6.1). Citronellal (100 and 200 mg/kg, i.p.) significantly reduced the number of writhes (66.4 and 81.9%) in a writhing test and the number of paw licks during phase 1 (47.0 and 66.8%) and phase 2 (71.1 and 79.2%) of a formalin test when compared to control group animals. In addition, the results of a hot plate test showed central analgesic properties for citronellal (p < 0.05). These results indicate depressant, hypnotic, and antinociceptive properties of this monoterpene.
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Affiliation(s)
- M S Melo
- Departamento de Fisiologia. Universidade Federal de Sergipe (DFS/UFS), Aracaju-SE, Brazil
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21
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Nugroho AE, Hirasawa Y, Kawahara N, Goda Y, Awang K, Hadi AHA, Morita H. Bisnicalaterine A, a vobasine-vobasine bisindole alkaloid from Hunteria zeylanica. JOURNAL OF NATURAL PRODUCTS 2009; 72:1502-1506. [PMID: 19388660 DOI: 10.1021/np900115q] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A new bisindole alkaloid, bisnicalaterine A (1), consisting of two vobasine-type skeletons, and 3-epivobasinol (2) and 3-O-methylepivobasinol (3), with vobasine-type skeletons, were isolated from the leaves of Hunteria zeylanica, and their structures were elucidated on the basis of spectroscopic data and chemical correlation. Bisnicalaterine A showed moderate cytotoxicity against various human cancer cell lines.
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Affiliation(s)
- Alfarius E Nugroho
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa, Tokyo 142-8501, Japan
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22
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Melo MGD, Araújo AAS, Rocha CPL, Almeida EMSA, Siqueira RDS, Bonjardim LR, Quintans LJ. Purification, physicochemical properties, thermal analysis and antinociceptive effect of atranorin extracted from Cladina kalbii. Biol Pharm Bull 2008; 31:1977-80. [PMID: 18827367 DOI: 10.1248/bpb.31.1977] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Lichens and their secondary metabolites have attracted the interest of many researchers. Some species have been shown to contain substances with remarkable biologic activity, as antimicrobial, mainly against Gram positive bacteria; antineoplasic acting on solid and ascetic tumors, or in culture cells; antiviral; hypotensive; and spasmolytic effects. The aim of this study was to isolate and characterize atranorin, one of the major constituents which presents in Cladina kalbii (DES ABB.) AHTI., and analyze its antinociceptive effect. The antinociceptive activity was verified in acetic acid-induced writhing test and formalin test with mice. In this work it was observed that atranorin was effective in significant reducing (p<0.05) abdominal writhing at doses of 200 and 400 mg/kg (p.o.) by 52.6 and 61.3%, respectively, when compared to control group (vehicle). The formalin test showed in 200 and 400 mg/kg (p.o.) that atranorin injection was able to inhibit the inflammatory processes (second phase) dose dependently.
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Affiliation(s)
- Marcélia Garcez Dória Melo
- Laboratório de Ensaios Farmacêuticos e Toxicidade, Universidade Federal de Sergipe (LeFT/UFS), São Cristóvão-SE, CEP 49000-000, Brazil
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23
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Morita H, Mohamad K, Suzuki T, Baba Y, Zaima K, Matsuno Y, Hirasawa Y, Ropi Mukhtar M, Awang K, Hamid A. Hadi A. Huncaniterine A, a New Bisindole Alkaloid from Hunteria zeylanica. HETEROCYCLES 2007. [DOI: 10.3987/com-07-s(w)35] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Choi J, Lee KT, Ha J, Yun SY, Ko CD, Jung HJ, Park HJ. Antinociceptive and Antiinflammatory Effects of Niga-ichigoside F1 and 23-Hydroxytormentic Acid Obtained from Rubus coreanus. Biol Pharm Bull 2003; 26:1436-41. [PMID: 14519951 DOI: 10.1248/bpb.26.1436] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
As an attempt to search for bioactive natural constituents exerting antinociceptive and antiinflammatory activities, we examined the potency of the extract of Rubus coreanus fruits by the activity-guided fractionation. The EtOAc- and BuOH fraction and those alkaline hydrolysates showed significant antinociceptive effects as assessed by writhing-, hot plate- and tail flicks tests in mice and rats as well as antiinflammatory effect in rats with carrageenan-induced edema. BuOH extract was subjected to column chromatography to obtain a large amount of niga-ichigoside F(1) (1,23-hydroxytormentic acid 28-O-glc), which was again hydrolyzed in NaOH solution to yield an aglycone 23-hydroxytormentic acid (1a). The aglycone, 23-hydroxytormentic acid, was much more potent in both antinociceptive and antiinflammatory tests than the glycoside, niga-ichigoside F(1). The antiinflammatory effects of these compounds were further supported by the reduction of carrageenan-induced lipid peroxidation and hydroxyl radical in serum. These results suggested that 23-hydroxytormentic acid might be an active moiety of niga-ichigoside F(1) present in R. coreanus.
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Affiliation(s)
- Jongwon Choi
- College of Pharmacy, Daeyeon-Dong, Kyungsung University, Japan
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25
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Abstract
Despite the progress that has occurred in recent years in the development of therapy, there is still a need for effective and potent analgesics, especially for the treatment of chronic pain. One of the most important analgesic drugs employed in clinical practice today continues to be the alkaloid morphine. In this review, emphasis will be given to the important contribution and the history of Papaver somniferum, Salix species, Capsicum species and Cannabis sativa in the development of new analgesics and their importance in the understanding of the complex pathways related to electrophysiological and molecular mechanisms associated with pain transmission. Recently discovered antinociceptive substances include alkaloids, terpenoids and flavonoid. Plant-derived substances have, and will certainly continue to have, a relevant place in the process of drug discovery, particularly in the development of new analgesic drugs.
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Affiliation(s)
- J B Calixto
- Department of Pharmacology, CCB, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.
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26
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Ahmadiani A, Hosseiny J, Semnanian S, Javan M, Saeedi F, Kamalinejad M, Saremi S. Antinociceptive and anti-inflammatory effects of Elaeagnus angustifolia fruit extract. JOURNAL OF ETHNOPHARMACOLOGY 2000; 72:287-292. [PMID: 10967484 DOI: 10.1016/s0378-8741(00)00222-1] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In this study, probable antinociceptive and anti-inflammatory effects of Elaeagnus angustifolia fruit components, were evaluated. For evaluation of antinociceptive effects, the chronic (formalin test) and acute (tail-flick) pain models of rats were used. For the anti-inflammatory effects, the paw inflammation model was used through subcutaneous injection of 5% formalin to the paw of male rats. Water extracts of the fruit and its components in the single dose were assessed through comparison with the antinociceptive and anti-inflammatory effects of sodium salicylate (SS) as a positive control. Administration of 300 mg/kg of SS (i.p.) had no effect on tail flick latency, while 1000 mg/kg of total (i.p. and p.o.) and endocarp (i.p.) extract, increased this latency (P<0.01, P<0.001, respectively), which was not reversed by naloxone (2 mg/kg). In the formalin test, SS (300 mg/kg, i.p.) and the extract (1000 mg/kg, p.o. ) alleviated the animals nociception in the second phase, while in the first phase they were not effective. The total and endocarp extracts (1000 mg/kg, i.p.) showed a significant effect on both phases (P<0.01, P<0.001, respectively) which was also not reversed by naloxone (2 mg/kg, i.p.). In the acute anti-inflammatory test, the total extract and the aqueous extract of individual fruit components showed a significant effect (P<0.001). This anti-inflammatory effect was not significant compared with the anti-inflammatory effect of SS. Because of the extract effect on the tail-flick latency and both phases of the formalin test, the site of its analgesic action is probably central, and the mechanism of antinociceptive action of the extract are not related to the opioid system. Our phytochemical studies indicated that aqueous extract of E. angustifolia fruit contains flavonoids, terpenoids and cardiac glycosides.
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Affiliation(s)
- A Ahmadiani
- Department of Pharmacology, School of Medicine, Shaheed Beheshti University of Medical Sciences, PO Box 19835-355, Tehran, Iran.
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27
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Abdel-Fattah AM, Matsumoto K, Watanabe H. Antinociceptive effects of Nigella sativa oil and its major component, thymoquinone, in mice. Eur J Pharmacol 2000; 400:89-97. [PMID: 10913589 DOI: 10.1016/s0014-2999(00)00340-x] [Citation(s) in RCA: 138] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The antinociceptive effects of Nigella sativa oil and its major component, thymoquinone, were examined in mice. The p.o. administration of N. sativa oil (50-400 mg/kg) dose-dependently suppressed the nociceptive response in the hot-plate test, tail-pinch test, acetic acid-induced writhing test and in the early phase of the formalin test. The systemic administration (2.5-10 mg/kg, p.o. and 1-6 mg/kg, i.p.) and the i.c.v. injection (1-4 microgram/mouse) of thymoquinone attenuated the nociceptive response in not only the early phase but also the late phase of the formalin test. Naloxone injected s.c. (1 mg/kg) significantly blocked N. sativa oil- and thymoquinone-induced antinociception in the early phase of the formalin test. Moreover, the i.c.v. injection of naloxone (10 microgram/mouse), the mu(1)-opioid receptor antagonist, naloxonazine (1-5 microgram/mouse), or the kappa-opioid receptor antagonist, nor-binaltorphimine (1-5 microgram/mouse), significantly reversed thymoquinone-induced antinociception in the early phase but not the late phase of the formalin test, whereas the delta-opioid receptor antagonist, naltrindole (1-5 ng/mouse, i.c.v.), had no effect on either phase. The antinociceptive effect of morphine was significantly reduced in thymoquinone- and N. sativa oil-tolerant mice, but not vice versa. These results suggest that N. sativa oil and thymoquinone produce antinociceptive effects through indirect activation of the supraspinal mu(1)- and kappa-opioid receptor subtypes.
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Affiliation(s)
- A M Abdel-Fattah
- Department of Pharmacology, Institute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630 Sugitani, 930-0194, Toyama, Japan
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Reanmongkol W, Subhadhirasakul S, Kongsang J, Tanchong M, Kitti J. Analgesic and Antipyretic Activities of n-Butanol Alkaloids Extracted from the Stem Bark Hunteria Zeylanica and its Major Constituent, Strictosidinic Acid, in Mice. PHARMACEUTICAL BIOLOGY 2000; 38:68-73. [PMID: 21214443 DOI: 10.1076/1388-0209(200001)3811-bft068] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The pharmacological activities of the n -butanol alkaloids extracted from the stem bark of Hunteria zeylanica (Retz) Gardn. ex Thw. ( H. zeylanica ) and its major constituent, strictosidinic acid, on nociceptive response using writhing and hot plate tests, the antipyretic activity in yeast-induced fever, pentobarbital-induced sleep, and locomotor activity were examined in mice. Oral administration of H. zeylanica extract at 200 mg/kg significantly decreased the number of contortions and stretchings induced by acetic acid but not heat-induced pain. Strictosidinic acid (5-20 mg/kg, p.o.) also produced a similar effect but less pronounced than the extract. The antipyretic effect of strictosidinic acid (5-20 mg/kg, p.o.) was stronger than that of the extract (100-200 mg/kg, p.o.). The H. zeylanica extract dose-dependently (50-200 mg/kg, p.o.) prolonged the duration of pen-tobarbital-induced sleep but had no sign ificant effect on locomotor activity. No effect of strictosidinic acid was noted on both pentobarbital-induced sleep and locomotor activity. These results suggest that the H. zeylanica extract possesses peripheral analgesic and mild antipyretic effects and its major constituent, strictosidinic acid, exerts a similar analgesic effect with marked antipyretic activity.
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Leewanich P, Tohda M, Matsumoto K, Subhadhirasakul S, Takayama H, Aimi N, Watanabe H. Inhibitory effects of corymine, an alkaloidal component from the leaves of Hunteria zeylanica, on glycine receptors expressed in Xenopus oocytes. Eur J Pharmacol 1997; 332:321-6. [PMID: 9300267 DOI: 10.1016/s0014-2999(97)01097-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We previously reported that corymine, an alkaloidal compound extracted from the leaves of Hunteria zeylanica native to Thailand, potentiated convulsions induced by either picrotoxin or strychnine. Therefore, to clarify the mechanism of action of corymine, the effects of corymine on gamma-aminobutyric acid (GABA) and glycine receptors were examined. We used Xenopus oocytes expressing these receptors and the two-electrode voltage-clamp method. The receptors expressed in oocytes injected with rat brain and spinal cord RNA showed the pharmacological properties of GABAA and glycine receptors, respectively. Corymine (1-100 microM) partially (20-30%) reduced the GABA responses in oocytes injected with rat brain RNA, while marked (up to 80%) dose-dependent reductions were observed in the glycine responses in oocytes injected with rat spinal cord RNA. These observations suggest that corymine was more effective against the glycine receptors than the GABA receptors. The ED50 of corymine on the glycine response was 10.8 microM. Corymine, at 30 microM, caused a shift to the right, with a lower maximal response, of the glycine concentration-response curve. This indicated that the action of corymine on glycine receptors is neither competitive nor purely non-competitive. These observations suggest that a binding site other than the glycine recognition site of the glycine receptors is the site of action of corymine.
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Affiliation(s)
- P Leewanich
- Department of Pharmacology, Research Institute for Wakan-Yaku (Oriental Medicines), Toyama Medical and Pharmaceutical University, Japan
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