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Gonçalves RLG, Cunha FVM, Sousa-Neto BPS, Oliveira LSA, Lopes ME, Rezende DC, Sousa IJO, Nogueira KM, Souza LKM, Medeiros JVR, Wong DVT, Pereira VMP, Lima-Júnior RCP, Sousa DP, Oliveira CPC, Almeida FRC, de Assis Oliveira F. Correction to: α-Phellandrene attenuates tissular damage, oxidative stress, and TNF-α levels on acute model ifosfamide-induced hemorrhagic cystitis in mice. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:2553-2554. [PMID: 33064165 DOI: 10.1007/s00210-020-01994-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The published online version contains figure in poor quality.
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Affiliation(s)
- R L G Gonçalves
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - F V M Cunha
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - B P S Sousa-Neto
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - L S A Oliveira
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - M E Lopes
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - D C Rezende
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - I J O Sousa
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - K M Nogueira
- Experimental Physiopharmacology of Gastrointestinal Disorders, Federal University of Piauí, Av. São Sebastião, no 2819, Parnaíba, Piauí, 64202-020, Brazil
| | - L K M Souza
- Experimental Physiopharmacology of Gastrointestinal Disorders, Federal University of Piauí, Av. São Sebastião, no 2819, Parnaíba, Piauí, 64202-020, Brazil
| | - J V R Medeiros
- Experimental Physiopharmacology of Gastrointestinal Disorders, Federal University of Piauí, Av. São Sebastião, no 2819, Parnaíba, Piauí, 64202-020, Brazil
| | - D V T Wong
- Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo, 1127, Fortaleza, Ceará, 60430-270, Brazil
| | - V M P Pereira
- Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo, 1127, Fortaleza, Ceará, 60430-270, Brazil
| | - R C P Lima-Júnior
- Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo, 1127, Fortaleza, Ceará, 60430-270, Brazil
| | - D P Sousa
- Department of Pharmaceutical Sciences, Federal University of Paraíba, Centro de Ciências da Saúde, João Pessoa, Paraíba, 58059-900, Brazil
| | - C P C Oliveira
- Department of Community Medicine, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - F R C Almeida
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - Francisco de Assis Oliveira
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil.
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Gonçalves RLG, Cunha FVM, Sousa-Neto BPS, Oliveira LSA, Lopes ME, Rezende DC, Sousa IJO, Nogueira KM, Souza LKM, Medeiros JVR, Wong DVT, Pereira VMP, Lima-Júnior RCP, Sousa DP, Oliveira CPC, Almeida FRC, Oliveira FDA. α-Phellandrene attenuates tissular damage, oxidative stress, and TNF-α levels on acute model ifosfamide-induced hemorrhagic cystitis in mice. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:1835-1848. [PMID: 32415495 DOI: 10.1007/s00210-020-01869-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 04/06/2020] [Indexed: 01/08/2023]
Abstract
Hemorrhagic cystitis (HC) is the major dose-limiting adverse effect of the clinical use ifosfamide (IFOS). The incidence of this side effect can be as high as 75%. Mesna has been used to reduce the risk of HC, although 5% of patients who get IFOS treatment may still suffer from HC. In previous studies, our group demonstrated that α-phellandrene (α-PHE) possesses anti-inflammatory activity, which opens the door for its study in the attenuation of HC. The objective of this study was to investigate the potential uroprotective effect of the α-PHE in the mouse model of IFOS-induced HC. In order to analyze the reduction of the urothelial damage, the bladder wet weight, hemoglobin content, and the Evans blue dye extravasation from the bladder matrix were evaluated. To investigate the involvement of neutrophil migration and lipid peroxidation and involvement of enzymatic and endogenous non-enzymatic antioxidants, the tissue markers myeloperoxidase (MPO), malondialdehyde, nitrite/nitrate (NOx), superoxide dismutase (SOD), and reduced glutathione (GSH) were evaluated. TNF-α and IL-1β were measured by ELISA immunoassay technique. The results show that pretreatment with α-PHE significantly reduced urothelial damage that was accompanied by a decrease in the activity of MPO, MDA, and NOx levels and prevention of the depletion of SOD and GSH in bladder tissues. In the assessment of cytokines, α-PHE was able to significantly reduce TNF-α level. However, it does not affect the activities of IL-1β. These data confirm that α-PHE exerts potent anti-inflammatory properties and demonstrates that α-PHE represents a promising therapeutic option for this pathological condition.
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Affiliation(s)
- R L G Gonçalves
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - F V M Cunha
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - B P S Sousa-Neto
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - L S A Oliveira
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - M E Lopes
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - D C Rezende
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - I J O Sousa
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - K M Nogueira
- Experimental Physiopharmacology of Gastrointestinal Disorders, Federal University of Piauí, Av. São Sebastião, no 2819, Parnaíba, Piauí, 64202-020, Brazil
| | - L K M Souza
- Experimental Physiopharmacology of Gastrointestinal Disorders, Federal University of Piauí, Av. São Sebastião, no 2819, Parnaíba, Piauí, 64202-020, Brazil
| | - J V R Medeiros
- Experimental Physiopharmacology of Gastrointestinal Disorders, Federal University of Piauí, Av. São Sebastião, no 2819, Parnaíba, Piauí, 64202-020, Brazil
| | - D V T Wong
- Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo, 1127, Fortaleza, Ceará, 60430-270, Brazil
| | - V M P Pereira
- Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo, 1127, Fortaleza, Ceará, 60430-270, Brazil
| | - R C P Lima-Júnior
- Department of Physiology and Pharmacology, Faculty of Medicine, Universidade Federal do Ceará, Rua Cel. Nunes de Melo, 1127, Fortaleza, Ceará, 60430-270, Brazil
| | - D P Sousa
- Department of Pharmaceutical Sciences, Federal University of Paraíba, Centro de Ciências da Saúde, João Pessoa, Paraíba, 58059-900, Brazil
| | - C P C Oliveira
- Department of Community Medicine, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - F R C Almeida
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil
| | - Francisco de Assis Oliveira
- Medicinal Plants Research Center, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, Teresina, PI, 64049-550, Brazil.
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Macedo EMA, Santos WC, Sousa BP, Lopes EM, Piauilino CA, Cunha FVM, Sousa DP, Oliveira FA, Almeida FRC. Association of terpinolene and diclofenac presents antinociceptive and anti-inflammatory synergistic effects in a model of chronic inflammation. ACTA ACUST UNITED AC 2017; 49:S0100-879X2016000700602. [PMID: 27332775 PMCID: PMC4918787 DOI: 10.1590/1414-431x20165103] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 03/10/2016] [Indexed: 12/16/2022]
Abstract
Pharmacological treatment of inflammatory pain is usually done by administration of
non-steroidal anti-inflammatory drugs (NSAIDs). These drugs present high efficacy,
although side effects are common, especially gastrointestinal lesions. One of the
pharmacological strategies to minimize such effects is the combination of drugs and
natural products with synergistic analgesic effect. The monoterpene terpinolene (TPL)
is a chemical constituent of essential oils present in many plant species, which have
pharmacological activities, such as analgesic and anti-inflammatory. The association
of ineffective doses of TPL and diclofenac (DCF) (3.125 and 1.25 mg/kg
po, respectively) presented antinociceptive and anti-inflammatory
effects in the acute (0, 1, 2, 3, 4, 5 and 6 h, after treatment) and chronic (10
days) inflammatory hyperalgesia induced by Freund's complete adjuvant (CFA) in the
right hind paw of female Wistar rats (170-230 g, n=6-8). The mechanical hyperalgesia
was assessed by the Randall Selitto paw pressure test, which determines the paw
withdrawal thresholds. The development of edema was quantified by measuring the
volume of the hind paw by plethismography. The TPL/DCF association reduced
neutrophils, macrophages and lymphocytes in the histological analysis of the paw,
following a standard staining protocol with hematoxylin and eosin and the counts were
performed with the aid of optical microscopy after chronic oral administration of
these drugs. Moreover, the TPL/DCF association did not induce macroscopic gastric
lesions. A possible mechanism of action of the analgesic effect is the involvement of
5-HT2A serotonin receptors, because ketanserin completely reversed the
antinociceptive effect of the TPL/DCF association. These results suggest that the
TPL/DCF association had a synergistic anti-inflammatory and analgesic effect without
causing apparent gastric injury, and that the serotonergic system may be involved in
the antinociceptive effect of this association.
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Affiliation(s)
- E M A Macedo
- Universidade Federal do Piauí, Universidade Federal do Piauí, Núcleo de Pesquisas em Plantas Medicinais, Teresina PI , Brasil, Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, PI, Brasil
| | - W C Santos
- Universidade Federal do Piauí, Universidade Federal do Piauí, Núcleo de Pesquisas em Plantas Medicinais, Teresina PI , Brasil, Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, PI, Brasil
| | - B P Sousa
- Universidade Federal do Piauí, Universidade Federal do Piauí, Núcleo de Pesquisas em Plantas Medicinais, Teresina PI , Brasil, Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, PI, Brasil
| | - E M Lopes
- Universidade Federal do Piauí, Universidade Federal do Piauí, Núcleo de Pesquisas em Plantas Medicinais, Teresina PI , Brasil, Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, PI, Brasil
| | - C A Piauilino
- Universidade Federal do Piauí, Universidade Federal do Piauí, Núcleo de Pesquisas em Plantas Medicinais, Teresina PI , Brasil, Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, PI, Brasil
| | - F V M Cunha
- Universidade Federal do Piauí, Universidade Federal do Piauí, Núcleo de Pesquisas em Plantas Medicinais, Teresina PI , Brasil, Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, PI, Brasil
| | - D P Sousa
- Universidade Federal da Paraíba, Universidade Federal da Paraíba, Departamento de Ciências Farmacêuticas, João Pessoa PB , Brasil, Departamento de Ciências Farmacêuticas, Universidade Federal da Paraíba, João Pessoa, PB, Brasil
| | - F A Oliveira
- Universidade Federal do Piauí, Universidade Federal do Piauí, Núcleo de Pesquisas em Plantas Medicinais, Teresina PI , Brasil, Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, PI, Brasil
| | - F R C Almeida
- Universidade Federal do Piauí, Universidade Federal do Piauí, Núcleo de Pesquisas em Plantas Medicinais, Teresina PI , Brasil, Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, PI, Brasil
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Brandão MS, Pereira SS, Lima DF, Oliveira JPC, Ferreira ELF, Chaves MH, Almeida FRC. Antinociceptive effect of Lecythis pisonis Camb. (Lecythidaceae) in models of acute pain in mice. J Ethnopharmacol 2013; 146:180-186. [PMID: 23276784 DOI: 10.1016/j.jep.2012.12.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 12/14/2012] [Accepted: 12/20/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Lecythis pisonis Camb., also known in Brazil as sapucaia, is used in folk medicine against pruritus, muscle pain and gastric ulcer. AIM OF THE STUDY To investigate the antinociceptive effect of ethanol extract from Lecythis pisonis leaves (LPEE), fractions (hexane-LPHF, ether-LPEF and ethyl acetate-LPEAF) and mixture of triterpenes [ursolic and oleanolic acids (MT)] in mice. MATERIALS AND METHODS LPEE and LPEF were evaluated on the acetic acid induced writhings and formalin, capsaicin and glutamate tests. In addition, MT was investigated on the writhings induced by acetic acid, capsaicin and glutamate tests. In the study of some possible mechanisms involved on the antinociceptive effect of LPEF, it was investigated the participation of opioid system, K+ATP channels and L-arginine-nitric oxide pathway. RESULTS LPEE (12.5 and 25 mg/kg, p.o.), LPEF and MT (6.25, 12.5 and 25 mg/kg, p.o.) reduced the writhings in comparison to saline. LPEE (100 mg/kg, p.o.) and LPEF (50 mg/kg, p.o.) were effective in inhibiting both phases of formalin test. In capsaicin test, LPEE (100 and 200 mg/kg, p.o.), LPEF (12.5-50 mg/kg, p.o) and MT (6.25-25 mg/kg, p.o.) showed a significant antinociceptive effect compared to the control. LPEE (25 and 50 mg/kg, p.o.), LPEF (50 and 100 mg/kg, p.o.) and MT (12.5 and 25 mg/kg, p.o.) reduced the glutamate-evoked nociceptive response. Treatment with naloxone, L-arginine and glibenclamide reversed the effect of LPEF in glutamate test. CONCLUSIONS These results indicate the antinociceptive effect of Lecythis pisonis leaves and suggest that this effect may be related to opioid pathway, K+ATP channels, and L-arginine-nitric oxide modulation. Furthermore, these data support the ethnomedical use of this plant.
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Affiliation(s)
- M S Brandão
- Medicinal Plants Research Center, Department of Chemistry, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, 64049-550 Teresina, Brazil
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Brandão MS, Pereira SS, Lima DF, Oliveira JPC, Ferreira ELF, Chaves MH, Almeida FRC. Antinociceptive effect of Lecythis pisonis Camb. (Lecythidaceae) in models of acute pain in mice. J Ethnopharmacol 2013; 146:180-186. [PMID: 23276784 DOI: 10.1016/j.jep.2012.06.052] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Revised: 12/14/2012] [Accepted: 12/20/2012] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Lecythis pisonis Camb., also known in Brazil as sapucaia, is used in folk medicine against pruritus, muscle pain and gastric ulcer. AIM OF THE STUDY To investigate the antinociceptive effect of ethanol extract from Lecythis pisonis leaves (LPEE), fractions (hexane-LPHF, ether-LPEF and ethyl acetate-LPEAF) and mixture of triterpenes [ursolic and oleanolic acids (MT)] in mice. MATERIALS AND METHODS LPEE and LPEF were evaluated on the acetic acid induced writhings and formalin, capsaicin and glutamate tests. In addition, MT was investigated on the writhings induced by acetic acid, capsaicin and glutamate tests. In the study of some possible mechanisms involved on the antinociceptive effect of LPEF, it was investigated the participation of opioid system, K+ATP channels and L-arginine-nitric oxide pathway. RESULTS LPEE (12.5 and 25 mg/kg, p.o.), LPEF and MT (6.25, 12.5 and 25 mg/kg, p.o.) reduced the writhings in comparison to saline. LPEE (100 mg/kg, p.o.) and LPEF (50 mg/kg, p.o.) were effective in inhibiting both phases of formalin test. In capsaicin test, LPEE (100 and 200 mg/kg, p.o.), LPEF (12.5-50 mg/kg, p.o) and MT (6.25-25 mg/kg, p.o.) showed a significant antinociceptive effect compared to the control. LPEE (25 and 50 mg/kg, p.o.), LPEF (50 and 100 mg/kg, p.o.) and MT (12.5 and 25 mg/kg, p.o.) reduced the glutamate-evoked nociceptive response. Treatment with naloxone, L-arginine and glibenclamide reversed the effect of LPEF in glutamate test. CONCLUSIONS These results indicate the antinociceptive effect of Lecythis pisonis leaves and suggest that this effect may be related to opioid pathway, K+ATP channels, and L-arginine-nitric oxide modulation. Furthermore, these data support the ethnomedical use of this plant.
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Affiliation(s)
- M S Brandão
- Medicinal Plants Research Center, Department of Chemistry, Federal University of Piauí, Av. Nossa Senhora de Fátima s/n, 64049-550 Teresina, Brazil
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Pereira SS, Lopes LS, Marques RB, Figueiredo KA, Costa DA, Chaves MH, Almeida FRC. Antinociceptive effect of Zanthoxylum rhoifolium Lam. (Rutaceae) in models of acute pain in rodents. J Ethnopharmacol 2010; 129:227-231. [PMID: 20304040 DOI: 10.1016/j.jep.2010.03.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Revised: 02/05/2010] [Accepted: 03/10/2010] [Indexed: 05/29/2023]
Abstract
AIM OF THE STUDY Zanthoxylum rhoifolium Lam. (Rutaceae) is locally known as "mamica de cadela", and its bark is popularly used for toothache and earache. The objective of this study was to investigate the antinociceptive effect of the ethanolic extract from this species' stem bark (EtOH), its fractions of partition (hexane-HEX, ethyl acetate-AcOEt, aqueous-AQ) and lupeol (a triterpene obtained from HEX) in models of acute pain. MATERIALS AND METHODS Male and female Swiss mice (25-35 g, n=6-12 animals/group) were used to assess acute toxicity and nociception (Animal Ethics Committee/UFPI, No. 09/2008). Acute toxicity was studied up to 2 g/kg p.o. of EtOH. In the formalin test (2%, 20 microL/paw), the licking time of the stimulated paw was quantified during the first 5 min (first phase) and at 15-30 min (second phase), 1h after oral treatment with EtOH, HEX, AcOEt or saline, and 30 min after use of morphine-MOR (5 mg/kg i.p.). The same response evoked by capsaicin (2 microg/20 microL/paw) was quantified during 5 min, after administration of EtOH, HEX, AcOEt, AQ, saline and MOR. The licking time of the paw that was stimulated with glutamate (10 micromol/20 microL) was measured (15 min) after treatment with EtOH, HEX, AcOEt, AQ, lupeol, saline or MK801 (0.03 mg/kg, i.p.). Mice were submitted to the rota-rod task and open-field test in order to assess any non-specific muscle-relaxant or sedative effects of EtOH (250 mg/kg p.o.) and HEX (500 mg/kg p.o.). RESULTS The animals did not exhibit any acute toxicity to EtOH (up to 2 g/kg p.o.), so it was not possible to calculate the LD50. EtOH, HEX and AcOEt (62.5-250 mg/kg) produced a significant antinociceptive effect in the formalin and capsaicin tests. However, AQ was ineffective. EtOH, HEX, AcOEt and lupeol reduced the glutamate-evoked nociceptive response, but AQ had no effect. EtOH and HEX did not alter the locomotion of animals in the open-field or rota-rod tests, which suggest a lack of a central depressant effect. CONCLUSION The results confirm the popular use of Zanthoxylum rhoifolium as an analgesic, and contribute to the pharmacological knowledge of this species because it was shown that EtOH and its less polar partition fractions (HEX, AcOEt) have an antinociceptive effect in models of chemical nociception, and that lupeol appears to be one of the constituents responsible for this effect.
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Affiliation(s)
- S S Pereira
- Medicinal Plants Research Center, Federal University of Piauí, Teresina, Brazil
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Lopes LS, Pereira SS, Silva LL, Figueiredo KA, Moura BA, Almeida FRC, Sousa FCF. Antinociceptive effect of topiramate in models of acute pain and diabetic neuropathy in rodents. Life Sci 2008; 84:105-10. [PMID: 19056404 DOI: 10.1016/j.lfs.2008.11.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2008] [Revised: 10/25/2008] [Accepted: 11/06/2008] [Indexed: 10/21/2022]
Abstract
This study assesses the antinociceptive effect induced by different dosages of topiramate (TP), an anticonvulsant drug that is orally administered in models of neuropathic pain and acute pain in rats and mice, respectively. Orally administered TP (80 mg/Kg) in mice causes antinociception in the first and second phases of a formalin test, while in doses of 20 and 40 mg/Kg it was only effective in the second phase. TP (80 mg/Kg, p.o) also exhibited antinociceptive action in the hot plate test, however, it did not have an effect in the capsaicin test in mice, nor in the model of neuropathic pain in diabetic rats. The antinociceptive effect caused by TP (80 mg/Kg, p.o) in the formalin test was reversed by prior treatment with naloxone (opioid antagonist), but not with glibenclamide (antagonist of the potassium channel), ondansetron (antagonist of the serotonin 5HT3 receptor) or cyproheptadine (antagonist of the serotonin 5HT2A receptor).The data show that TP has an important antinociceptive effect in the models of nociception induced by chemical (formalin) or thermal (hot plate) stimuli, and that the opioid system plays a part in the antinociceptive effect, as shown by formalin.
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Affiliation(s)
- L S Lopes
- Department of Physiology and Pharmacology, Medical School, Federal University of Ceará, Fortaleza, Brazil
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Almeida FRC, Rao VSN, Matos MEO. Antiinflammatory, antitumour and antifertility effects in rodents of two nor-cucurbitacin glucosides fromWilbrandia species. Phytother Res 1992. [DOI: 10.1002/ptr.2650060405] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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