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Santos BM, Santos WS, Solon IG, Garcia FS, Emilio-Silva MT, Jesus AA, Hiruma-Lima CA, Nascimento GC, Cárnio EC, Branco LGS. Orofacial anti-hypernociceptive effect of citral in acute and persistent inflammatory models in rats. Arch Oral Biol 2023; 152:105734. [PMID: 37244090 DOI: 10.1016/j.archoralbio.2023.105734] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 02/09/2023] [Revised: 04/12/2023] [Accepted: 05/20/2023] [Indexed: 05/29/2023]
Abstract
Orofacial pain has significant psychological and physiological effects. Citral (3,7-dimethyl-2,6-octadienal) is the main component of Cymbopogon citratus (DC) Stapf, an herb with analgesic properties. Although citral has been considered a potent analgesic, its putative effects on orofacial pain are still unknown. OBJECTIVE The objective of this study is to test the hypothesis that citral modulates orofacial pain using two experimental models: formalin-induced hyperalgesia in the vibrissae area and during persistent temporomandibular hypernociception using Complete Freund's Adjuvant - CFA test. METHODS For the formalin test, citral (100 and 300 mg/kg, oral gavage) or its vehicle (Tween 80, 1 %) were given 1 h before the formalin injection subcutaneously (sc) into the vibrissae area. For the CFA model, we analyzed the prophylactic (100 mg/kg of citral by oral gavage, 1 h before CFA injection) and the chronic therapeutic (citral treatment 1-hour post-CFA injection and daily post-CFA injection) effect of citral or its vehicle in animals treated with CFA for 8 days. RESULTS Citral caused a decrease in formalin-induced local inflammation and the time spent performing nociceptive behavior in a dose-dependent fashion. Similarly, prophylactic and therapeutic citral treatment decreased the CFA-induced persistent mechanical hypernociception in the temporomandibular area. CONCLUSION Our data strengthen the notion that citral plays a powerful antinociceptive role by decreasing orofacial hypernociception in formalin and CFA models.
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Affiliation(s)
- Bruna M Santos
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Avenida Do Café s/n, São Paulo, 14040-904 Ribeirão Preto, SP, Brazil; Department of General and Specialized Nursing Ribeirão Preto, College of Nursing - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Wanderson S Santos
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Avenida Do Café s/n, São Paulo, 14040-904 Ribeirão Preto, SP, Brazil
| | - Isabelly G Solon
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Avenida Do Café s/n, São Paulo, 14040-904 Ribeirão Preto, SP, Brazil
| | - Felipe S Garcia
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Avenida Do Café s/n, São Paulo, 14040-904 Ribeirão Preto, SP, Brazil
| | - Maycon T Emilio-Silva
- Department of Structural and Functional Biology (Physiology), Biosciences Institute, UNESP-São Paulo State University, CEP 18618-689 Botucatu, SP, Brazil
| | - Aline A Jesus
- Department of General and Specialized Nursing Ribeirão Preto, College of Nursing - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Clélia A Hiruma-Lima
- Department of Structural and Functional Biology (Physiology), Biosciences Institute, UNESP-São Paulo State University, CEP 18618-689 Botucatu, SP, Brazil
| | - Glauce C Nascimento
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Avenida Do Café s/n, São Paulo, 14040-904 Ribeirão Preto, SP, Brazil
| | - Evelin C Cárnio
- Department of General and Specialized Nursing Ribeirão Preto, College of Nursing - University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Luiz G S Branco
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo, Avenida Do Café s/n, São Paulo, 14040-904 Ribeirão Preto, SP, Brazil.
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Portela LM, Santos SA, Constantino FB, Camargo AC, Colombelli KT, Fioretto MN, Barquilha CN, Périco LL, Hiruma-Lima CA, Scarano WR, Zambrano E, Justulin LA. Increased oxidative stress and cancer biomarkers in the ventral prostate of older rats submitted to maternal malnutrition. Mol Cell Endocrinol 2021; 523:111148. [PMID: 33387600 DOI: 10.1016/j.mce.2020.111148] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 12/05/2020] [Accepted: 12/27/2020] [Indexed: 02/07/2023]
Abstract
The concept of Developmental Origins of Health and Disease (DOHaD) states that exposure to malnutrition early in life increase the incidence of non-communicable chronic diseases throughout the lifespan. In this study, a reduction in serum testosterone and an increase in estrogen levels were shown in older rats born to protein malnourished dams (6% protein in the diet) during gestation and lactation. Intraprostatic levels of reduced glutathione were decreased, while tissue expression of glutathione S-transferase pi and sulfiredoxin-1 were increased in these animals. Strong immunostaining for alfametilacil CoA racemase (AMACR), vascular endothelial growth factor-A (VEGF-A), and aquaporin-1 (AQP1) was also observed. In silico analysis confirmed commonly deregulated proteins in the ventral prostate of old rats and patients with prostate cancer. In conclusion, the increase in oxidative stress associated with an imbalance of sex hormones may contribute to prostate carcinogenesis in offspring, highlighting early-life malnutrition as a key risk factor for this malignance.
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Affiliation(s)
- Luiz Mf Portela
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University, Botucatu, SP, Brazil
| | - Sérgio Aa Santos
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University, Botucatu, SP, Brazil
| | - Flavia B Constantino
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University, Botucatu, SP, Brazil
| | - Ana Cl Camargo
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University, Botucatu, SP, Brazil
| | - Ketlin T Colombelli
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University, Botucatu, SP, Brazil
| | - Matheus N Fioretto
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University, Botucatu, SP, Brazil
| | - Caroline N Barquilha
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University, Botucatu, SP, Brazil
| | - Larissa L Périco
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University, Botucatu, SP, Brazil; Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Alberta, Canada
| | - Clélia A Hiruma-Lima
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University, Botucatu, SP, Brazil
| | - Wellerson R Scarano
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University, Botucatu, SP, Brazil
| | - Elena Zambrano
- Departamento de Biología de la Reproducción, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Luís A Justulin
- Department of Structural and Functional Biology, Institute of Biosciences, Sao Paulo State University, Botucatu, SP, Brazil.
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Emílio-Silva MT, Rodrigues VP, Bueno G, Ohara R, Martins MG, Horta-Júnior JAC, Branco LGS, Rocha LRM, Hiruma-Lima CA. Hypothermic Effect of Acute Citral Treatment during LPS-induced Systemic Inflammation in Obese Mice: Reduction of Serum TNF-α and Leptin Levels. Biomolecules 2020; 10:E1454. [PMID: 33080865 PMCID: PMC7603063 DOI: 10.3390/biom10101454] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/16/2020] [Accepted: 10/14/2020] [Indexed: 12/12/2022] Open
Abstract
Citral is a mixture of monoterpenes present in the essential oil of several plants, such as Cymbopogon citratus and Zingiber officinale, possessing anti-inflammatory, anti-ulcerogenic, and antipyretic actions. We investigated the action of citral on body temperature (Tb) and inflammatory signaling in eutrophic and obese mice during Systemic Inflammation (SI) induced by Lipopolysaccharide (LPS). Thus, we assessed the effect of citral (25, 100, and 300 mg/kg) and ibuprofen in LPS-induced SI in Swiss male mice fed a standard diet (SD) or high-fat diet (HFD) for 12 weeks. Following SI induction, we measured Tb and collected the serum, hypothalamus, and gastric mucosa for biochemical measurements. Acute treatment with citral decreased the Tb of both SD and HFD-fed animals. Citral (300 mg/kg) treatment caused a significantly lower Tb variation in HFD-fed animals than in those fed the SD. Citral reduced peripheral levels of tumor necrosis factor (TNF)-α in SD and HFD mice and decreased serum leptin concentration in HFD mice 90 min after the LPS challenge. Furthermore, citral also reduced interleukin (IL)-6 levels in the hypothalamus of obese mice. In summary, citral effectively reduced Tb during SI by reducing inflammatory mediators with a distinct action profile in HFD mice when compared with SD.
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Affiliation(s)
- Maycon T. Emílio-Silva
- Department of Structural and Functional Biology (Physiology), Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo 18618-970, Brazil; (M.T.E.-S.); (V.P.R.); (G.B.); (R.O.); (L.R.M.R.)
| | - Vinicius P. Rodrigues
- Department of Structural and Functional Biology (Physiology), Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo 18618-970, Brazil; (M.T.E.-S.); (V.P.R.); (G.B.); (R.O.); (L.R.M.R.)
| | - Gabriela Bueno
- Department of Structural and Functional Biology (Physiology), Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo 18618-970, Brazil; (M.T.E.-S.); (V.P.R.); (G.B.); (R.O.); (L.R.M.R.)
| | - Rie Ohara
- Department of Structural and Functional Biology (Physiology), Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo 18618-970, Brazil; (M.T.E.-S.); (V.P.R.); (G.B.); (R.O.); (L.R.M.R.)
| | - Marina G. Martins
- Department of Physiology, Institute of Biosciences, University of São Paulo (USP), São Paulo 05508-090, Brazil;
| | - José A. C. Horta-Júnior
- Department of Structural and Functional Biology (Anatomy), Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo 18618-689, Brazil;
| | - Luiz G. S. Branco
- Department of Basic and Oral Biology, Dental School of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo 14040-904, Brazil;
| | - Lúcia R. M. Rocha
- Department of Structural and Functional Biology (Physiology), Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo 18618-970, Brazil; (M.T.E.-S.); (V.P.R.); (G.B.); (R.O.); (L.R.M.R.)
| | - Clélia A. Hiruma-Lima
- Department of Structural and Functional Biology (Physiology), Institute of Biosciences, São Paulo State University (UNESP), Botucatu, São Paulo 18618-970, Brazil; (M.T.E.-S.); (V.P.R.); (G.B.); (R.O.); (L.R.M.R.)
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Souza ACS, Silva LK, Queiroz TB, Marques ES, Hiruma-Lima CA, Gaivão IOM, Maistro EL. Citral presents cytotoxic and genotoxic effects in human cultured cells. Drug Chem Toxicol 2019; 43:435-440. [DOI: 10.1080/01480545.2019.1585445] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ana C. S. Souza
- Department of Speech and Hearing Therapy, Facult of Philosophy and Sciences, São Paulo State University (UNESP), São Paulo, Brazil
| | - Laís K. Silva
- Department of Speech and Hearing Therapy, Facult of Philosophy and Sciences, São Paulo State University (UNESP), São Paulo, Brazil
| | - Thais B. Queiroz
- PostGraduate Program in General and Applied Biology, São Paulo State University (UNESP), Biosciences Institute, São Paulo, Brazil
| | - Eduardo S. Marques
- Department of Speech and Hearing Therapy, Facult of Philosophy and Sciences, São Paulo State University (UNESP), São Paulo, Brazil
| | - Clélia A. Hiruma-Lima
- PostGraduate Program in General and Applied Biology, São Paulo State University (UNESP), Biosciences Institute, São Paulo, Brazil
| | - Isabel O. M. Gaivão
- CECAV and Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
| | - Edson L. Maistro
- Department of Speech and Hearing Therapy, Facult of Philosophy and Sciences, São Paulo State University (UNESP), São Paulo, Brazil
- PostGraduate Program in General and Applied Biology, São Paulo State University (UNESP), Biosciences Institute, São Paulo, Brazil
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Abstract
The antiulcerogenic activity of trans-dehydrocrotonin (DHC), a nor-clerodane diterpene isolated from Croton cajucara Benth. (Euphorbiaceae), and its subacute (35 days) toxicity were studied in mice and rats, respectively. For the antiulcerogenic tests, models of gastric ulcers induced in mice by ethanol/HCl or stress were used. In both models, an oral dose of DHC (100 mg/kg) significantly reduced (P <0.01) the formation of gastric lesions. DHC was also tested for its ability to scavenge free radicals, but no such action was observed in rat liver mitochondria. To assess the subacute toxicity, rats were treated orally with DHC (25, 50 and 100 mg/kg) for 5 weeks. A significant increase in liver weight was observed in male and female rats at highest doses, whereas a significant reduction in plasma alkaline phosphatase and cholesterol levels and an increase in gamma glutamyl transpeptidase were observed only at the highest dose (100 mg/kg) in female rats. DHC caused histopathological alterations in the liver that included a turbid tumefaction, microvacuolar degeneration and nuclear alterations. Despite the beneficial antiulcerogenic activity of DHC, our results suggest that the long-term use of this compound may induce liver damage.
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Affiliation(s)
- Jaime A Rodríguez
- Departamento de Bioquímica, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
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Volpato GT, Francia-Farje LA, Damasceno DC, Oliveira RV, Hiruma-Lima CA, Kempinas WG. Effect of essential oil from Citrus aurantium in maternal reproductive outcome and fetal anomaly frequency in rats. AN ACAD BRAS CIENC 2015; 87:407-15. [DOI: 10.1590/0001-3765201520140354] [Citation(s) in RCA: 14] [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: 07/14/2014] [Accepted: 11/04/2014] [Indexed: 11/22/2022] Open
Abstract
Citrus aurantium L., commonly known as bitter orange, is widely used in folk medicine, but there is little data in the literature about the effects on pregnancy. The aim of the present study was to evaluate the influence of essential oil obtained from fruits of Citrus aurantium on the maternal reproductive outcome and fetal anomaly incidence in rats. Pregnant Wistar rats were randomized into four groups (n minimum = 12 animals/group): G1 = control, G2 to G4 = treated with essential oil from C. aurantium at dose 125, 250 and 500 mg/kg, respectively. Rats were orally treated, by gavage, with plant essential oil or vehicle during pre-implantation and organogenic period (gestational day 0-14). On gestational day 20 the rats were anaesthetized and the gravid uterus was weighed with its contents and the fetuses were analyzed. Results showed that the treated group with 500 mg/kg presented decreased placental weights and placental index, although the treatment with bitter orange essential oil did not show any alteration in maternal reproductive performance, toxicological effect, changes in ossification sites, and malformation index. In conclusion, the treatment of Citrus aurantium essential oil was not teratogenic and did not alter the maternal reproductive outcome.
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Basting RT, Nishijima CM, Lopes JA, Santos RC, Lucena Périco L, Laufer S, Bauer S, Costa MF, Santos LC, Rocha LRM, Vilegas W, Santos ARS, Dos Santos C, Hiruma-Lima CA. Antinociceptive, anti-inflammatory and gastroprotective effects of a hydroalcoholic extract from the leaves of Eugenia punicifolia (Kunth) DC. in rodents. J Ethnopharmacol 2014; 157:257-267. [PMID: 25311275 DOI: 10.1016/j.jep.2014.09.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 09/24/2014] [Accepted: 09/28/2014] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE An ethnopharmacological survey indicated that leaves from Eugenia punicifolia (Kunth) DC. (Myrtaceae) are popularly used as a natural therapeutic agent to treat pain and inflammation. AIM OF THE STUDY The overall objective of the present study was to evaluate the antinociceptive, anti-inflammatory and gastroprotective activities of a hydroalcoholic extract of leaves from Eugenia punicifolia (HEEP) in rodents. MATERIAL AND METHODS The antinociceptive effects of HEEP were evaluated in mice after oral administration in chemical (formalin and glutamate) and thermal (hot-plate) tests. We evaluated the involvement of the glutamatergic, opioidergic and nitrergic pathways in the antinociception of HEEP and the effect of HEEP on the inhibition of p38α MAPK. The anti-inflammatory effect of HEEP was evaluated in mice and rats using xylene-induced ear edema and carrageenan-induced paw edema, respectively. Furthermore, the gastroprotective effect of HEEP was evaluated in rats with acute gastric lesions induced by ethanol or indomethacin. Finally, we performed a phytochemical analysis of HEEP. RESULTS The oral administration of HEEP (125, 250 and 500mg/kg, p.o.) significantly inhibited the neurogenic and inflammatory phases of formalin-induced licking, and HEEP (250mg/kg, p.o.) also significantly inhibited the nociception caused by glutamate. The antinociceptive effects of HEEP were significantly reversed by l-arginine (500mg/kg, i.p.) but not by naloxone (1mg/kg, i.p.) in the formalin test. HEEP did not affect animal motor performance in the rotarod model. In addition, HEEP also increased the paw withdraw latency in the hot-plate test. HEEP significantly inhibited ear edema induced by xylene (64%) and paw edema induced by carrageenan (50%) compared to the control group. Furthermore, HEEP (3-30mg/mL) also inhibited the phosphorylation of p38α MAPK by approximately 90%. In addition, HEEP (125, 250 and 500mg/kg, p.o.) protected the rats against ethanol (88.4-99.8%) and indomethacin (53-72.3%) and increased the mucus levels of the gastric mucosa without producing an antisecretory effect. The phytochemical profile of HEEP obtained using HPLC-PDA showed secondary metabolites already reported for the genus, mostly flavonoids, gallotannins and proanthocyanidins. CONCLUSIONS These data show for the first time that HEEP has significant antinociceptive and anti-inflammatory effects, which appear to be related to the inhibition of the glutamatergic system, the synthesis of nitric oxide and the inhibition of the phosphorylation of p38α MAPK. HEEP also has interesting gastroprotective effects related to the maintenance of protective factors, such as mucus production. These results support the use of Eugenia punicifolia in popular medicine and demonstrate that this plant has therapeutic potential for the development of phytomedicines with antinociceptive, anti-inflammatory and gastroprotective properties.
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Affiliation(s)
- Rosanna T Basting
- Univ. Estadual Paulista-UNESP, Departamento de Fisiologia, Instituto de Biociências, CEP 18618-970, Botucatu, SP, Brazil
| | - Catarine M Nishijima
- Univ. Estadual Paulista-UNESP, Departamento de Fisiologia, Instituto de Biociências, CEP 18618-970, Botucatu, SP, Brazil
| | - Juliana A Lopes
- Univ. Estadual Paulista-UNESP, Departamento de Fisiologia, Instituto de Biociências, CEP 18618-970, Botucatu, SP, Brazil
| | - Raquel C Santos
- Univ. Estadual Paulista-UNESP, Departamento de Fisiologia, Instituto de Biociências, CEP 18618-970, Botucatu, SP, Brazil
| | - Larissa Lucena Périco
- Univ. Estadual Paulista-UNESP, Departamento de Fisiologia, Instituto de Biociências, CEP 18618-970, Botucatu, SP, Brazil
| | - Stefan Laufer
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Eberhard Karls University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Silke Bauer
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Eberhard Karls University of Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Miriam F Costa
- Univ. Estadual Paulista-UNESP, Departamento de Química Orgânica, Instituto de Química, CEP 14800-900, Araraquara, SP, Brazil
| | - Lourdes C Santos
- Univ. Estadual Paulista-UNESP, Departamento de Química Orgânica, Instituto de Química, CEP 14800-900, Araraquara, SP, Brazil
| | - Lúcia R M Rocha
- Univ. Estadual Paulista-UNESP, Departamento de Fisiologia, Instituto de Biociências, CEP 18618-970, Botucatu, SP, Brazil
| | - Wagner Vilegas
- Univ. Estadual Paulista-UNESP, Campus Experimental do Litoral Paulista, CEP 11330-900, São Vicente, SP, Brazil
| | - Adair R S Santos
- Universidade Federal de Santa Catarina, Departamento de Ciências Fisiológicas, CEP 88040-900, Florianópolis, SC, Brazil
| | - Catarina Dos Santos
- Univ. Estadual Paulista-UNESP, Departamento de Ciências Biológicas, Faculdade de Ciências e Letras, CEP 19806-900, Assis, SP, Brazil.
| | - Clélia A Hiruma-Lima
- Univ. Estadual Paulista-UNESP, Departamento de Fisiologia, Instituto de Biociências, CEP 18618-970, Botucatu, SP, Brazil.
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Nasser ALM, Carli CBA, Rodrigues CM, Maia DCG, Carlos IZ, Eberlin MN, Hiruma-Lima CA, Vilegas W. Identification of Ellagic Acid Derivatives in Methanolic Extracts from Qualea Species. ACTA ACUST UNITED AC 2014; 63:794-800. [DOI: 10.1515/znc-2008-11-1203] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The methanolic extract from the barks of the medicinal plant Qualea parviflora (Vochysiaceae) was fractionated by column chromatography over silica gel followed by gel permeation over Sephadex LH-20 to give 3,3′-di-O-methylellagic acid-4-O-β-d-glucopyranoside (1), 3-Omethylellagic acid-4′-O-α-l-rhamnopyranoside (2), 3,3′,4-tri-O-methylellagic acid-4′-O-β-dglucopyranoside (3), and 3,3′-di-O-methylellagic acid (4), together with triterpenes and saponins. We also performed comparative analyses among this species and Q. grandiflora and Q. multiflora using high-pressure liquid chromatography. The biological assays showed that, when compared to the standard ellagic acid, compounds 1-4 are less cytotoxic but have a lower capacity of stimulating murine peritoneal macrophages to release nitric oxide and tumoural-α necrose factor.
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Affiliation(s)
- Ana L. M. Nasser
- UNESP - São Paulo State University, Instituto de Química de Araraquara, C. Postal 355, 14801-970, Araraquara, SP, Brazil. Fax: 55-16-33 01-66 92
| | - Camila B. A. Carli
- UNESP - São Paulo State University, Faculdade de Ciências Farmacêuticas, C. Postal 502, 14801-902, Araraquara, SP, Brazil
| | - Clenilson M. Rodrigues
- UNESP - São Paulo State University, Instituto de Química de Araraquara, C. Postal 355, 14801-970, Araraquara, SP, Brazil
| | - Danielle C. G. Maia
- UNESP - São Paulo State University, Faculdade de Ciências Farmacêuticas, C. Postal 502, 14801-902, Araraquara, SP, Brazil
| | - Iracilda Z. Carlos
- UNESP - São Paulo State University, Faculdade de Ciências Farmacêuticas, C. Postal 502, 14801-902, Araraquara, SP, Brazil
| | - Marcos N. Eberlin
- UNICAMP - Campinas State University, Instituto de Química, 13083-970, Campinas, SP, Brazil
| | - Clélia A. Hiruma-Lima
- UNESP - São Paulo State University, Departamento de Farmacologia, Instituto de Biociências, 18618-000, Botucatu, SP, Brazil
| | - Wagner Vilegas
- UNESP - São Paulo State University, Instituto de Química de Araraquara, C. Postal 355, 14801-970, Araraquara, SP, Brazil. Fax: 55-16-33 01-66 92
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Bonamin F, Moraes TM, Dos Santos RC, Kushima H, Faria FM, Silva MA, Junior IV, Nogueira L, Bauab TM, Souza Brito ARM, da Rocha LRM, Hiruma-Lima CA. The effect of a minor constituent of essential oil from Citrus aurantium: the role of β-myrcene in preventing peptic ulcer disease. Chem Biol Interact 2014; 212:11-9. [PMID: 24480520 DOI: 10.1016/j.cbi.2014.01.009] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [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: 07/23/2013] [Revised: 01/07/2014] [Accepted: 01/08/2014] [Indexed: 12/20/2022]
Abstract
The monoterpene β-myrcene has been widely used in cosmetics, food and beverages, and it is normally found in essential oil from citrus fruit. The aim of this study was to investigate the anti-ulcer effects of β-myrcene on experimental models of ulcers that are induced by ethanol, NSAIDs (non-steroidal anti-inflammatory drugs), stress, Helicobacter pylori, ischaemia-reperfusion injury (I/R) and cysteamine in order to compare with the essential oil of Citrus aurantium and its major compound limonene. The results indicate that the oral administration of β-myrcene at a dose of 7.50mg/kg has important anti-ulcer activity with significantly decreased gastric and duodenal lesions as well as increased gastric mucus production. The results showed treatment with β-myrcene caused a significant increase in mucosal malondialdehyde level (MDA), an important index of oxidative tissue damage. The β-myrcene was also endowed with marked enhancement of antioxidant enzyme activity from GR system as evidenced by the decreased activity of superoxide dismutase (SOD) and increased levels of glutathione peroxidase (GPx), glutathione reductase (GR), and total glutathione in gastric tissue. Our results also shown that treatment with β-myrcene is not involved with thioredoxin reductase (TrxR) activity. Our results reveal, for the first time, the importance of β-myrcene as an inhibitor of gastric and duodenal ulcers and demonstrate that an increase in the levels of gastric mucosa defence factors is involved in the anti-ulcer activity of β-myrcene.
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Affiliation(s)
- Flavia Bonamin
- Univ. Estadual Paulista-UNESP - Departamento de Fisiologia, Instituto de Biociências, c.p. 510, CEP 18618-970 Botucatu, SP, Brazil
| | - Thiago M Moraes
- Univ. Estadual Paulista-UNESP - Departamento de Fisiologia, Instituto de Biociências, c.p. 510, CEP 18618-970 Botucatu, SP, Brazil
| | - Raquel C Dos Santos
- Univ. Estadual Paulista-UNESP - Departamento de Fisiologia, Instituto de Biociências, c.p. 510, CEP 18618-970 Botucatu, SP, Brazil
| | - Hélio Kushima
- Univ. Estadual Paulista-UNESP - Departamento de Fisiologia, Instituto de Biociências, c.p. 510, CEP 18618-970 Botucatu, SP, Brazil
| | - Felipe M Faria
- Univ. Estadual Campinas-UNICAMP - Departamento de Fisiologia, Instituto de Biologia, CEP 13083-970 Campinas, SP, Brazil
| | - Marcos A Silva
- Univ. Estadual Paulista-UNESP - Departamento de Morfologia, Instituto de Biociências, c.p. 510, CEP 18618-970 Botucatu, SP, Brazil
| | - Ivan V Junior
- Univ. Estadual Paulista-UNESP - Departamento de Morfologia, Instituto de Biociências, c.p. 510, CEP 18618-970 Botucatu, SP, Brazil
| | - Leonardo Nogueira
- Univ. Estadual Paulista-UNESP - Departamento de Ciências Biológicas, CEP 14801-902 Araraquara, SP, Brazil
| | - Tais M Bauab
- Univ. Estadual Paulista-UNESP - Departamento de Ciências Biológicas, CEP 14801-902 Araraquara, SP, Brazil
| | - Alba R M Souza Brito
- Univ. Estadual Campinas-UNICAMP - Departamento de Fisiologia, Instituto de Biologia, CEP 13083-970 Campinas, SP, Brazil
| | - Lucia R M da Rocha
- Univ. Estadual Paulista-UNESP - Departamento de Fisiologia, Instituto de Biociências, c.p. 510, CEP 18618-970 Botucatu, SP, Brazil
| | - Clélia A Hiruma-Lima
- Univ. Estadual Paulista-UNESP - Departamento de Fisiologia, Instituto de Biociências, c.p. 510, CEP 18618-970 Botucatu, SP, Brazil.
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10
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Rozza AL, Hiruma-Lima CA, Takahira RK, Padovani CR, Pellizzon CH. Effect of menthol in experimentally induced ulcers: pathways of gastroprotection. Chem Biol Interact 2013; 206:272-8. [PMID: 24121185 DOI: 10.1016/j.cbi.2013.10.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 08/08/2013] [Accepted: 10/01/2013] [Indexed: 01/26/2023]
Abstract
Based on ethnopharmacological indications that Mentha species may be used in the treatment of gastrointestinal diseases, this study aimed to characterize the gastroprotective mechanisms of menthol (ME), the major compound of the essential oil from species of the genus Mentha. The gastroprotective action of ME was analyzed in gastric ulcers that were induced by ethanol or indomethacin in Wistar male rats. The mechanisms responsible for the gastroprotective effect were assessed by analyzing the amount of mucus secreted, involvement of non-protein sulfhydryl (NP-SH) compounds, involvement of calcium ion channels and NO/cGMP/K(+)ATP pathway, gastric antisecretory activity and the prostaglandin E2 (PGE2) production. The anti-diarrheal activity and acute toxicity of ME were also evaluated. Oral treatment with ME (50mg/kg) offered 88.62% and 72.62% of gastroprotection against ethanol and indomethacin, respectively. There was an increased amount of mucus and PGE2 production. The gastroprotective activity of ME involved NP-SH compounds and the stimulation of K(+)ATP channels, but not the activation of calcium ion channels or the production of NO. The oral administration of ME induced an antisecretory effect as it decreased the H(+) concentration in gastric juice. ME displayed anti-diarrheal and antiperistaltic activity. There were no signs of toxicity in the biochemical analyses performed in the rats' serum. These results demonstrated that ME provides gastroprotective and anti-diarrheal activities with no toxicity in rats.
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Affiliation(s)
- A L Rozza
- Morphology Department, Biosciences Institute, UNESP - Univ Estadual Paulista, Botucatu/SP, Brazil
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11
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Luiz-Ferreira A, Cola M, Barbastefano V, de-Faria FM, de Almeida ABA, Farias-Silva E, Calvo TR, Hiruma-Lima CA, Vilegas W, Souza-Brito ARM. Healing, antioxidant and cytoprotective properties of Indigofera truxillensis in different models of gastric ulcer in rats. Int J Mol Sci 2012. [PMID: 23203107 PMCID: PMC3509623 DOI: 10.3390/ijms131114973] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The present study evaluated the antiulcerogenic activity and mechanisms of the aqueous (AqF 100 mg/kg) and ethyl acetate (AcF 50 mg/kg) fractions from Indigofera truxillensis leaves. This dose was selected to assess its activity on ulcer healing and its action on gastric acid and mucus secretion, prostaglandin production and antioxidant enzyme activity (superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and glutathione reductase (GSH-Rd)). Gastric ulcer was induced by absolute ethanol. Antisecretory action, mucus and prostaglandin production, healing and antioxidant enzyme activities were evaluated for both fractions. AqF and AcF significantly inhibited the gastric mucosal damage caused by ethanol. This effect was statistically significant at 100 and 50 mg/kg compared with the vehicle. Neither fraction interfered with gastric secretion. AcF increased the PGE(2) production, and both fractions increased mucus production. l-NAME did not alter the gastroprotection exerted by the fractions, but N-ethylmaleimide attenuated only AcF. In the ischemia/reperfusion model both fractions inhibited the mucosal damage. AcF increased SOD, GSH-Px and GSH-Rd activity, but AqF increased only SOD and GSH-Px. In the acetic acid-induced ulcer model AcF only accelerated ulcer healing. These results showed that Indigofera truxillensis acted as a gastroprotective agent, stimulating protective factors and antioxidants enzymes.
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Affiliation(s)
- Anderson Luiz-Ferreira
- Department of Biological Sciences, Federal University of Goiás, 75704-020, Catalão, Goiás, Brazil
- Department of Structural and Functional Biology, Biology Institute, Campinas University, 13083-865, Campinas, São Paulo, Brazil; E-Mails: (V.B.); (A.B.A.A.); (E.F.-S.); (A.R.M.S.-B.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +55-64-34415348
| | - Maira Cola
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas, 13083-887, Campinas, São Paulo, Brazil; E-Mails: (M.C.); (F.M.F.)
| | - Victor Barbastefano
- Department of Structural and Functional Biology, Biology Institute, Campinas University, 13083-865, Campinas, São Paulo, Brazil; E-Mails: (V.B.); (A.B.A.A.); (E.F.-S.); (A.R.M.S.-B.)
| | - Felipe Meira de-Faria
- Department of Pharmacology, Faculty of Medical Sciences, University of Campinas, 13083-887, Campinas, São Paulo, Brazil; E-Mails: (M.C.); (F.M.F.)
| | - Ana Beatriz A. de Almeida
- Department of Structural and Functional Biology, Biology Institute, Campinas University, 13083-865, Campinas, São Paulo, Brazil; E-Mails: (V.B.); (A.B.A.A.); (E.F.-S.); (A.R.M.S.-B.)
| | - Elisângela Farias-Silva
- Department of Structural and Functional Biology, Biology Institute, Campinas University, 13083-865, Campinas, São Paulo, Brazil; E-Mails: (V.B.); (A.B.A.A.); (E.F.-S.); (A.R.M.S.-B.)
| | - Tamara Regina Calvo
- Department of Organic Chemistry, Institute of Chemistry, São Paulo State University, 14800-900, Araraquara, São Paulo, Brazil; E-Mails: (T.R.C.); (W.V.)
| | - Clélia A. Hiruma-Lima
- Department of Physiology, Institute of Biosciences, São Paulo State University, 18618-000, Botucatu, São Paulo, Brazil; E-Mail:
| | - Wagner Vilegas
- Department of Organic Chemistry, Institute of Chemistry, São Paulo State University, 14800-900, Araraquara, São Paulo, Brazil; E-Mails: (T.R.C.); (W.V.)
| | - Alba Regina M. Souza-Brito
- Department of Structural and Functional Biology, Biology Institute, Campinas University, 13083-865, Campinas, São Paulo, Brazil; E-Mails: (V.B.); (A.B.A.A.); (E.F.-S.); (A.R.M.S.-B.)
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12
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Witaicenis A, Luchini AC, Hiruma-Lima CA, Felisbino SL, Garrido-Mesa N, Utrilla P, Gálvez J, Di Stasi LC. Suppression of TNBS-induced colitis in rats by 4-methylesculetin, a natural coumarin: comparison with prednisolone and sulphasalazine. Chem Biol Interact 2011; 195:76-85. [PMID: 22119283 DOI: 10.1016/j.cbi.2011.11.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 11/03/2011] [Accepted: 11/08/2011] [Indexed: 12/20/2022]
Abstract
The aim of the present study was to compare the effects of the 4-methylesculetin with those produced by prednisolone and sulphasalazine and to elucidate the mechanisms involved in its action. Colitis was induced in rat by instillation of trinitrobenzenesulphonic acid (TNBS). The colon damage was evaluated using macroscopic, microscopic and biochemical analysis. In addition, in vitro studies were performed to evaluate cytokine production in cell cultures using the murine macrophage cell line RAW264.7, mouse splenocytes and the human colonic epithelial cell line Caco-2. 4-Methylesculetin produced a reduction of the macroscopic damage score and the recovery of the intestinal cytoarchitecture. These effects were associated with a prevention of the GSH depletion and an inhibition in AP activity. After colitis relapse, 4-methylesculetin improved the colonic inflammatory status as evidenced by histological findings, with a reduction in apoptosis, as well as biochemically by inhibition of colonic myeloperoxidase, alkaline phosphatase and metalloproteinase 9 activities. Paired with this inhibitive activity, there was a decrease in malondialdehyde content and in IL-1β levels. In vitro assays revealed that 4-methylesculetin promoted an inhibition in IL-1β, IL-8, IL-2 and IFN-γ production in cell cultures. In conclusion, 4-methylesculetin showed similar efficacy to that obtained with either prednisolone or sulphasalazine, both in the acute phase of colitis as well as following a curative protocol. The intestinal anti-inflammatory activity by 4-methylesculetin is likely related to its ability in reduce colonic oxidative stress and inhibit pro-inflammatory cytokine production.
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Affiliation(s)
- Aline Witaicenis
- Univ. Estadual Paulista - UNESP, Institute of Biosciences, Department of Pharmacology, Botucatu, SP, Brazil
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13
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Vasconcelos PCP, Andreo MA, Vilegas W, Hiruma-Lima CA, Pellizzon CH. Effect of Mouriri pusa tannins and flavonoids on prevention and treatment against experimental gastric ulcer. J Ethnopharmacol 2010; 131:146-53. [PMID: 20600773 DOI: 10.1016/j.jep.2010.06.017] [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: 04/14/2010] [Revised: 06/07/2010] [Accepted: 06/11/2010] [Indexed: 05/16/2023]
Abstract
AIM OF THE STUDY Mouriri pusa, popularly known as "manapuçá" or "jaboticaba do mato", is a plant from Brazilian cerrado that has been found to be commonly used in the treatment of gastrointestinal disturbs in its native region. The present work was carried out to investigate the effect of tannins (TF) and flavonoids (FF) fractions from Mouriri pusa leaves methanolic extract on the prevention and cicatrisation process of gastric ulcers, and also evaluate possible toxic effects. MATERIALS AND METHODS The following protocols were taken in rats: acute assay, in which ulcers were induced by oral ethanol after pre-treatment with the fractions; and 14 days treatment assay, in which ulcers were treated for 14 days after induction by local injection of acetic acid. RESULTS In the acute model, treatment with either, TF (25mg/kg) or FF (50mg/kg), was able to reduce lesion area, showing gastroprotective effect. In addition, FF proved itself anti-inflammatory by reducing COX-2 levels. In acetic acid model, both fractions exhibited larger ulcers' regenerative mucosa, indicating cicatrisation enhancement. FF group also showed augmented cell proliferation, anti-inflammatory action and enhanced angiogenesis as well as increased mucus secretion. Moreover, concerning the toxicity parameters analyzed, no alteration in the fractions groups was observed. CONCLUSIONS Tannins and flavonoids from Mouriri pusa provide beneficial effects against gastric ulcers with relative safety.
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Affiliation(s)
- P C P Vasconcelos
- Botucatu Institute of Biosciences, UNESP - São Paulo State University, Botucatu, SP, Brazil
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14
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Melanchauski LS, Broto APGS, Moraes TM, Nasser ALM, Said A, Hawas UW, Rashed K, Vilegas W, Hiruma-Lima CA. Gastroprotective and antisecretory effects of Ailanthus excelsa (Roxb). J Nat Med 2009; 64:109-13. [DOI: 10.1007/s11418-009-0373-1] [Citation(s) in RCA: 4] [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] [Received: 05/18/2009] [Accepted: 10/13/2009] [Indexed: 11/24/2022]
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15
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Lima ZP, Calvo TR, Silva EF, Pellizzon CH, Vilegas W, Brito ARMS, Bauab TM, Hiruma-Lima CA. Brazilian medicinal plant acts on prostaglandin level and Helicobacter pylori. J Med Food 2009; 11:701-8. [PMID: 19053863 DOI: 10.1089/jmf.2007.0676] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Among the current treatment strategies for the peptic ulcer patient with Helicobacter pylori infection, the method of choice is triple therapy based on the concurrent use of proton inhibitors and two antibiotics. Alchornea triplinervia is a medicinal plant commonly used by people living in the Cerrado region of Brazil to treat gastrointestinal ulcers. In the present work we proposed therapy based on this medicinal plant that presents effective gastroprotective action with antibiotic effects. Oral pretreatment with methanolic extract (ME) of A. triplinervia in rats and mice decreased the gastric injuries induced by ethanol and HCl/ethanol. Increasing the dose reduced the gastroprotective effects of ME on the gastric lesions induced by nonsteroidal anti-inflammatory drug. After pylorus ligature of mice, oral administration of ME induced a decrease not only in total acid but also in the ulcer index. We also observed that ME displayed antibacterial activity against H. pylori. Liquid-liquid separation of ME indicated that active constituents responsible for the gastroprotective action are concentrated in the ethyl acetate fraction (EAF) (50% protection) rather than in the aqueous fraction, which did not induce significant gastroprotection at the same dose (100 mg/kg). EAF induced an increase of gastric mucosa prostaglandin (PG) E(2) levels, which remained high even after previous administration of indomethacin. The phytochemical profile of ME revealed that EAF contains mainly flavonoids. In conclusion, all these results suggest that ME did not show acute toxicity, but exhibited an antisecretory property, anti-H. pylori effect, and gastroprotective action. The observed effect did not involve the participation of nitric oxide or endogenous sulfhydryl groups. However, EAF showed a more efficient gastroprotective effect than ME at a lower dose and protected the gastric mucosa by increasing PGE(2).
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Affiliation(s)
- Z P Lima
- Departamentos de Fisiologia, São Paulo State University, Botucatu, Brazil
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16
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De Paula ACB, Gracioso JS, Toma W, Hiruma-Lima CA, Carneiro EM, Brito ARMS. The antiulcer effect of Croton cajucara Benth in normoproteic and malnourished rats. Phytomedicine 2008; 15:815-825. [PMID: 18434121 DOI: 10.1016/j.phymed.2008.02.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2007] [Revised: 12/19/2007] [Accepted: 02/20/2008] [Indexed: 05/26/2023]
Abstract
The aim of the present study is to investigate the antiulcerogenic effects of the essential oil (EO) of Croton cajucara Benth in rats fed with a normal protein (NP) and low-protein diet (MN). NP and MN rats were treated with the essential oil for 15 days after chronic ulceration was induced. The EO accelerated healing of acetic acid-induced gastric lesions in NP and MN rats (p<0.05). In a similar experiment on chronic ulceration, Epidermal Growth Factor (EGF) mRNA expression increased in NP rats but not in MN rats. In assays of acute antiulcerogenic activity, C. cajucara increased somatostatin plasma levels and decreased gastrin plasma levels in both animal groups. The EO significantly prevented ethanol-induced gastric ulcers in NP and MN rats (p<0.001). Histological examination showed initial regeneration, formation of inflammatory infiltrate and angiogenesis in the epithelium surface of acetic acid-induced ulcers in NP and MN rats. C. cajucara prevented gastric lesions in both animal groups when ethanol methodology was used. We concluded that the EO showed an antiulcerogenic activity mediated by increased somatostatin secretion and EGF mRNA expression.
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Affiliation(s)
- Ana Claudia B De Paula
- Department of Physiology and Biophysics, Institute of Biology, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil.
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17
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Costa ES, Hiruma-Lima CA, Lima EO, Sucupira GC, Bertolin AO, Lolis SF, Andrade FDP, Vilegas W, Souza-Brito ARM. Antimicrobial activity of some medicinal plants of the Cerrado, Brazil. Phytother Res 2008; 22:705-7. [PMID: 18350520 DOI: 10.1002/ptr.2397] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In order to determine the potential of Cerrado plants as sources of antimicrobial activity, the phytochemical screening of ethanol extracts from Virola surinamensis, Qualea grandiflora, Alchornea castaneifolia, Hancornia speciosa and Curatella americana traditionally used in folk medicine are reported.
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Affiliation(s)
- E S Costa
- Instituto de Biologia e Saúde Pública, Campus de Porto Nacional, Fundação Universidade do Tocantins, Porto Nacional, Tocantins, Brazil
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18
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Vasconcelos PCP, Kushima H, Andreo M, Hiruma-Lima CA, Vilegas W, Takahira RK, Pellizzon CH. Studies of gastric mucosa regeneration and safety promoted by Mouriri pusa treatment in acetic acid ulcer model. J Ethnopharmacol 2008; 115:293-301. [PMID: 18023306 DOI: 10.1016/j.jep.2007.10.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2007] [Revised: 10/02/2007] [Accepted: 10/03/2007] [Indexed: 05/25/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Mouriri pusa Gardn. (Melastomataceae) is a medicinal plant commonly used by people living in the Cerrado to treat gastrointestinal disturbances. This medicinal plant has shown intense gastroprotective action in rodent gastric lesion, but still there are no data about its healing effect on gastric mucosa. AIM OF THE STUDY To evaluate the methanolic extract (MeOH) obtained from Mouriri pusa leaves for its effect on the cicatrisation process of gastric ulcer. MATERIALS AND METHODS The healing effects on gastric ulcers inducted by subserosal injection of acetic acid were evaluated by macroscopic and microscopic measures, immunohistochemistry and cell counting in rats treated with MeOH extract of Mouriri pusa (250 mg/kg, p.o./daily) for 14 or 30 days. The toxicity of Mouriri pusa was also evaluated by body and organ weight measure and clinical biochemical parameters. RESULTS Mouriri pusa treatments lasting 14 and 30 days showed elevated mucus secretion (PAS) and thicker regenerative gastric mucosa, denoting increased cell proliferation, which was confirmed by PCNA immunohistochemical analysis. Moreover, there was important cell recruitment (neutrophils and mast cells) to the site of the ulcer, which is an important factor in ulcer healing. No toxic effect was observed in all parameters evaluated. Phenolic compounds present in the MeOH extract like tannins, flavonoids and epicatechin are the probable agents involved in the healing effects of this medicinal plant. CONCLUSIONS These findings showed a potential effect of Mouriri pusa in increasing regeneration of damaged gastric mucosa with safety for human use.
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Affiliation(s)
- P C P Vasconcelos
- Departmento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Rubião Junior s/n, Botucatu, SP, Brazil
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19
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Barbastefano V, Cola M, Luiz-Ferreira A, Farias-Silva E, Hiruma-Lima CA, Rinaldo D, Vilegas W, Souza-Brito ARM. Vernonia polyanthes as a new source of antiulcer drugs. Fitoterapia 2007; 78:545-51. [PMID: 17904766 DOI: 10.1016/j.fitote.2007.07.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2006] [Accepted: 07/18/2007] [Indexed: 10/23/2022]
Abstract
Methanolic (VPME) and chloroformic (VPCL) extracts, obtained from the aerial parts of Vernonia polyanthes, were investigated for its antiulcerogenic properties. Administration of VPME (250 mg/kg) and VPCL (50 mg/kg) significantly inhibited the gastric mucosa damage (64% and 90%, respectively) caused by absolute ethanol (p.o.). Otherwise, in NSAID-induced gastric damage, their gastroprotective effects have decreased. Since the VPCL extract resulted to be more effective than the VPME we focused our efforts over VPCL action mechanism of action.
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Affiliation(s)
- Victor Barbastefano
- Departamento de Fisiologia e Biofísica, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Cidade Universitária Zeferino Vaz, s/n, CP 6109, CEP13083-970, Campinas, SP, Brazil.
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20
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Farias-Silva E, Cola M, Calvo TR, Barbastefano V, Ferreira AL, De Paula Michelatto D, Alves de Almeida AC, Hiruma-Lima CA, Vilegas W, Brito ARMS. Antioxidant activity of indigo and its preventive effect against ethanol-induced DNA damage in rat gastric mucosa. Planta Med 2007; 73:1241-1246. [PMID: 17973201 DOI: 10.1055/s-2007-981613] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Ethanol-induced oxidative damage is commonly associated with the generation of reactive oxygen molecules, leading to oxidative stress. Considering that antioxidant activity is an important mechanism of action involved in cytoprotection, the aim of this work was to evaluate the antioxidant properties of the alkaloid indigo (1) (2 mg/kg, P. O.), obtained from the leaves of Indigofera truxillensis Kunth (Fabaceae), on rat gastric mucosa submitted to ethanol-induced (100%, 1 mL, P. O.) gastric ulcer. Enzymatic assays and DNA fragmentation analysis were performed. When ethanol was administered to the control group, the sulfhydryl content (SH) and the glutathione peroxidase (GPx) activity decreased by 41% and 50%, respectively; in contrast, superoxide dismutase (SOD) and glutathione reductase (GR) activities increased by 56% and 67%, respectively. Additionally, myeloperoxidase (MPO) activity, a marker for free radical generation caused by polymorphonuclear neutrophil (PMN) tissue infiltration, also increased 4.5-fold after ethanol treatment. Rat gastric mucosa exposed to ethanol showed DNA fragmentation. Indigo alkaloid pretreatment protected rats from ethanol-induced gastric lesions. This effect was determined by the ulcerative lesion area (ULA), indicating an inhibition of around 80% at 2 mg/kg. This alkaloid also diminished GPx activity, which was higher than that observed with ethanol alone. However, this effect was counterbalanced by increased GR activity. Indigo was unable to restore alterations in SOD activity promoted by ethanol. After indigo pretreatment, SH levels and MPO activity remained normal and gastric mucosa DNA damage caused by ethanol was also partially prevented by indigo. These results suggest that the gastroprotective mechanisms of indigo include non-enzymatic antioxidant effects and the inhibition of PMN infiltration which, in combination, partially protect the gastric mucosa against ethanol-induced DNA damage.
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Paula ACB, Toma W, Gracioso JS, Hiruma-Lima CA, Carneiro EM, Souza Brito ARM. The gastroprotective effect of the essential oil of Croton cajucara is different in normal rats than in malnourished rats. Br J Nutr 2007; 96:310-5. [PMID: 16923225 DOI: 10.1079/bjn20061827] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
It has been shown previously that malnourished rats are resistant to acute gastric lesions but not to subchronic gastric ulceration. It also has been demonstrated that the essential oil obtained from the bark of Croton cajucara (Sacaca) has antiulcer properties. In the present study, the ability of this essential oil to prevent the formation of gastric ulcers in rats fed a diet with 17% protein (normoproteic rats) or 6% protein (malnourished rats) was investigated. At a dose of 100mg/kg body weight, orally, the essential oil significantly reduced the gastric injury caused by indomethacin (25% after 2h and 70% after 4h) only in normoproteic rats. In the pylorus ligature model, the essential oil increased the pH and gastric volume, but decreased the total acid concentration in both groups when compared to the respective control group. The essential oil significantly increased prostaglandin E2 production in glandular cells by 50% compared to the controls in both groups of rats. In addition, the amount of gastric mucus was two-fold higher in malnourished rats than in normoproteic rats. The present results show that the enhanced protective effect of essential oil in malnourished rats involved an increase in prostaglandin E2 production and mucus secretion, which are both factors that protect the gastric mucosa against damage. In agreement with this, malnourished rats always had a lower number of acute gastric ulcers.
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Affiliation(s)
- A C B Paula
- Departmento de Fisiologia e Biofísica, Universidade Estadual de Campias (UNICAMP), SP, Brazil
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22
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Rodrigues CM, Rinaldo D, dos Santos LC, Montoro P, Piacente S, Pizza C, Hiruma-Lima CA, Brito ARMS, Vilegas W. Metabolic fingerprinting using direct flow injection electrospray ionization tandem mass spectrometry for the characterization of proanthocyanidins from the barks of Hancornia speciosa. Rapid Commun Mass Spectrom 2007; 21:1907-14. [PMID: 17510932 DOI: 10.1002/rcm.3036] [Citation(s) in RCA: 34] [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] [Indexed: 05/15/2023]
Abstract
Direct flow injection electrospray ionization ion trap tandem mass spectrometry (ESI-IT-MS/MS) was used to investigate the polyphenolic compounds present in an infusion from the barks of Hancornia speciosa Gom. (Apocynaceae), a native Brazilian plant popularly known as 'mangabeira', used as a source of nutrition and against gastric disorders. After a simple sample filtration pretreatment the characteristic fingerprint of the infusion was performed in negative ion ESI mode in a few minutes. At low capillary-voltage activation, the deprotonated molecules ([M--H]-) were observed and using collision-induced dissociation the product ion spectra showed the presence of a homologous series of B-type proanthocyanidins, as well as another series containing their respective C-glycosylated derivatives, with a degree of polymerization from 1 up to 6 units of interlinked catechins. Therefore, direct flow injection allowed us to identify the key compounds without preparative isolation of the components.
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Affiliation(s)
- Clenilson M Rodrigues
- UNESP, São Paulo State University, Institute of Chemistry, Organic Chemistry Department, CP 355, CEP 14800-900, Araraquara, SP, Brazil
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Conceição K, Konno K, Melo RL, Marques EE, Hiruma-Lima CA, Lima C, Richardson M, Pimenta DC, Lopes-Ferreira M. Orpotrin: a novel vasoconstrictor peptide from the venom of the Brazilian stingray Potamotrygon gr. orbignyi. Peptides 2006; 27:3039-46. [PMID: 17056153 DOI: 10.1016/j.peptides.2006.09.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2006] [Revised: 09/06/2006] [Accepted: 09/07/2006] [Indexed: 10/24/2022]
Abstract
Characterization of the peptide content of venoms has a number of potential benefits for basic research, clinical diagnosis, development of new therapeutic agents, and production of antiserum. In order to analyze in detail the peptides and small proteins of crude samples, techniques such as chromatography and mass spectrometry have been employed. The present study describes the isolation, biochemical characterization, and sequence determination of a novel peptide, named Orpotrin from the venom of Potamotrygon gr. orbignyi. The natural peptide was shown to be effective in microcirculatory environment causing a strong vasoconstriction. The peptide was fully sequenced by de novo amino acid sequencing with mass spectrometry and identified as the novel peptide. Its amino acid sequence, HGGYKPTDK, aligns only with creatine kinase residues 97-105, but has no similarity to any bioactive peptide. Therefore, possible production of this peptide from creatine kinase by limited proteolysis is discussed. Taken together, the results indicate the usefulness of this single-step approach for low molecular mass compounds in complex samples such as venoms.
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Affiliation(s)
- Katia Conceição
- Laboratório Especial de Toxinologia Aplicada (LETA), Center for Applied Toxinology (CAT/CEPID), Instituto Butantan, Avenida Vital Brasil, 1500, São Paulo, SP, 05503-900, Brazil.
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24
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Lima ZP, Severi JA, Pellizzon CH, Brito ARMS, Solis PN, Cáceres A, Girón LM, Vilegas W, Hiruma-Lima CA. Can the aqueous decoction of mango flowers be used as an antiulcer agent? J Ethnopharmacol 2006; 106:29-37. [PMID: 16500058 DOI: 10.1016/j.jep.2005.11.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2004] [Accepted: 11/10/2005] [Indexed: 05/02/2023]
Abstract
This study was designed to determine the effect of Mangifera indica flowers decoction, on the acute and subacute models of induced ulcer in mice and rats. A single oral administration of the aqueous decoction (AD) from M. indica up to a dose of 5 g/kg, p.o. did not produce any signs or symptom of toxicity in the treated animals. The oral pre-treatment with AD (250, 500 and 1000 mg/kg) in rats with gastric lesions induced by ethanol, decreased the gastric lesions from 89.0+/-6.71 (control group) to 9.25+/-2.75, 4.50+/-3.30 and 0, respectively. Pretreatment with AD (250, 500 and 1000 mg/kg) to mice with HCl/ethanol- or stress-induced gastric lesions resulted in a dose-dependent significant decrease of lesion index. In the piroxicam-induced gastric lesions, the gastroprotective effect of AD was reducing with the increase of the AD dose. In the pylorus-ligature, AD (p.o.) significantly decreased the acid output indicating the antisecretory property involved in the gastroprotective effect of M. indica. Treatment with AD during 14 consecutive days significantly accelerated the healing process in subacute gastric ulcer induced by acetic acid in rats. Pretreatment with N-nitro-l-arginine methyl ester (l-NAME), an inhibitor of NO-synthase, did not abolish the gastroprotective effects (99% with saline versus 80% with l-NAME) of AD against ethanol-induced gastric lesions. Pretreatment with N-ethylmaleimide (NEM), a blocker of endogenous sulphydryl group, significantly abolished the protective effects of AD against ethanol-induced gastric ulcers (95% with saline versus 47% with NEM). Phytochemical screening showed the presence of steroids, triterpenes, phenolic compounds and flavonoids. Estimation of the global polyphenol content in the AD was performed by Folin-Ciocalteu method and showed approximately 53% of total phenolic on this extract. These findings indicate the potential gastroprotective and ulcer-healing properties of aqueous decoction of M. indica flowers and further support its popular use in gastrointestinal disorders in Caribbean.
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Affiliation(s)
- Z P Lima
- Departamento de Fisiologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP), CP 510, CEP 18618-000, Botucatu, SP, Brasil
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25
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Magalhães KW, Lima C, Piran-Soares AA, Marques EE, Hiruma-Lima CA, Lopes-Ferreira M. Biological and biochemical properties of the Brazilian Potamotrygon stingrays: Potamotrygon cf. scobina and Potamotrygon gr. orbignyi. Toxicon 2006; 47:575-83. [PMID: 16564065 DOI: 10.1016/j.toxicon.2006.01.028] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2005] [Revised: 01/25/2006] [Accepted: 01/26/2006] [Indexed: 11/24/2022]
Abstract
Stingrays of the family Potamotrygonidae are widespread throughout river systems of South America that drain into the Atlantic Ocean. Some species are endemic to the most extreme freshwater environment of the Brazil and cause frequent accidents to humans. The envenomation causes immediate, local, and intense pain, soft tissue edema, and a variable extent of bleeding. The present study was carried out in order to describe the principal biological and some biochemical properties of the Brazilian Potamotrygon fish venoms (Potamotrygon cf. scobina and P. gr. orbignyi). Both stingray venoms induced significant edematogenic and nociceptive responses in mice. Edematogenic and nociceptive responses were reduced when the venom was incubated at 37 or 56 degrees C. The results showed striking augments of leukocytes rolling and adherent cells to the endothelium of cremaster mice induced by both venoms. The data also presented that injection of both venoms induced necrosis, low level of proteolytic activity, without inducing haemorrhage. But when the venoms of both stingray species were injected together with their mucus secretion, the necrotizing activity was more vigorous. The present study provided in vivo evidence of toxic effects for P. cf. scobina and P. gr. orbignyi venoms.
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Affiliation(s)
- Kharita W Magalhães
- Nucleus of Environmental Studies, Federal University of Tocantins, Tocantins, Brazil
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26
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Hiruma-Lima CA, Santos LC, Kushima H, Pellizzon CH, Silveira GG, Vasconcelos PCP, Vilegas W, Brito ARMS. Qualea grandiflora, a Brazilian "Cerrado" medicinal plant presents an important antiulcer activity. J Ethnopharmacol 2006; 104:207-14. [PMID: 16216456 DOI: 10.1016/j.jep.2005.09.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2005] [Revised: 08/31/2005] [Accepted: 09/01/2005] [Indexed: 05/04/2023]
Abstract
Qualea grandiflora is one of the species widely used in folk medicine to treat gastric ulcers in Cerrado of the central region of Brazil. The hydroalcoholic extract of bark (HE) of Qualea grandiflora was investigated for their ability to prevent and heal lesions in the gastric mucosa. The oral administration of HE exhibited antiulcer activity decreasing the ulcerative index induced by HCl/ethanol solution, indomethacin/bethanechol and stress. In the Shay model, results showed that HE (p.o.) only reduced the severity of gastric lesions without effects on pH, gastric acidity or volume. When given by intraduodenal route, HE changed the pH, but did not modify the other parameters of the gastric juice. These data were in accordance with those obtained when HE was administered orally for 14 days after gastric ulcers were induced by acetic acid in rats. HE presented healing process in subacute gastric ulcer induced by acetic acid in rats. Moreover, histological examinations showed the simple columnar epithelium, lamina propria with simple branched tubular glandules with dilated lumen and large amounts of mucus secretion. Phytochemical investigation of HE led to the detection of terpenes, steroids, saponins, phenolic compounds and tannins in this extract, which may be involved in the observed activity.
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Affiliation(s)
- C A Hiruma-Lima
- Departamento de Fisiologia, Instituto de Biociências, Universidade Estadual Paulista (UNESP), c.p. 510, CEP 18618-000 Botucatu, SP, Brazil.
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27
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Toma W, Hiruma-Lima CA, Guerrero RO, Brito ARMS. Preliminary studies of Mammea americana L. (Guttiferae) bark/latex extract point to an effective antiulcer effect on gastric ulcer models in mice. Phytomedicine 2005; 12:345-50. [PMID: 15957368 DOI: 10.1016/j.phymed.2003.06.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Plant extracts are some of the most attractive sources of new drugs and have shown promising results for the treatment of gastric ulcers. Several folk medicinal plants and herbs have been used to treat gastrointestinal disorders, including gastric ulcers. Mammea americana L. (Guttiferae) fruit is very common in the diet of the population of northern South America. Our research interest in this plant arose because of its potential medicinal value as a tonic and against stomachache, as used in folk medicine. In this paper we evaluated three different extracts (ethanolic/EtOH, methanolic/MeOH and dichloromethane/DCM) obtained from M. americana L., for their ability to protect the gastric mucosa against injuries caused by necrotizing agents (0.3 M HCl/60% EtOH), hypothermic restraint stress, nonsteroidal anti-inflammatory drugs (NSAID, indomethacin) and pylorus ligation. In the HCl/EtOH-induced gastric-ulcer model, EtOH and DCM extracts demonstrated significant inhibition of the ulcerative lesion index by 54% (12.0 +/- 2.6 mm) and 86% (3.7 +/- 1.8 mm), respectively, in relation to the control value (26.0 +/- 1.4 mm) (p<0.0001). In the NSAID/cholinomimetic-induced lesion model, both EtOH and DCM extracts showed antiulcerogenic effects with significant reduction in the damage to these gastric lesions of 36% (8.3 +/- 2.0 mm) and 42% (7.5 +/- 1.4 mm), respectively, as compared to the control group (13.0 +/- 0.9 mm) (p<0.0001). In the gastric ulcer induced by hypothermic-restraint stress, both extracts also showed significant activity, and inhibited the gastric lesion index by 58% and 75%, respectively. The EtOH and DCM extracts also changed gastric juice parameters as well as those of cimetidine, decreased gastric acid secretion significantly (p<0.0001), increased pH values and promoted reduced acid output (p<0.0001). In all gastric-ulcer-induced models, MeOH extract did not show any significant antiulcerogenic activity, nor did it change gastric-juice parameters (p>0.05). The results suggest that EtOH and DCM extracts obtained from M. americana possess excellent antisecretory and/or gastrotective effect in all gastric ulcer models. These results suggest that the antiulcerogenic compound(s) present in M. americana may be clustered in the apolar fraction, which will be investigated by our group for the probable mechanisms of action.
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Affiliation(s)
- W Toma
- Department of Pharmacology, Medical School, State University of Campinas, Campinas, São Paulo, Brazil.
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28
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Sannomiya M, Fonseca VB, da Silva MA, Rocha LRM, Dos Santos LC, Hiruma-Lima CA, Souza Brito ARM, Vilegas W. Flavonoids and antiulcerogenic activity from Byrsonima crassa leaves extracts. J Ethnopharmacol 2005; 97:1-6. [PMID: 15652267 DOI: 10.1016/j.jep.2004.09.053] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2003] [Revised: 05/05/2004] [Accepted: 09/11/2004] [Indexed: 05/20/2023]
Abstract
Byrsonima crassa Niedenzu (IK) (Malpighiaceae) is used in Brazilian folk medicine for the treatment of diseases related mainly to gastric ulcers. In this study, we evaluated the potential antiulcerogenic effect of three different extracts obtained from the leaves of Byrsonima crassa namely hydromethanolic (80% MeOH), methanolic (MeOH) and chloroformic extracts (CHCl(3)). The oral administration (250, 500 and 1000 mg/kg) of all the extracts reduced the formation of lesions associated with HCl/ethanol administration in mice. The 80% MeOH extract significantly reduced the incidence of gastric lesions by 74, 78 and 92% at doses of 250, 500 and 1000 mg/kg, respectively (P<0.01). The MeOH extract reduced the ulceration by 93 and 99% only at the doses of 500 and 1000 mg/kg (P<0.01). The lower gastroprotective action (69%) was observed when animals were treated with CHCl(3) extract at the dose of 1000 mg/kg (P<0.01). Phytochemical investigation of Byrsonima crassa afforded five known substances: quercetin-3-O-beta-d-galactopyranoside, quercetin-3-O-alpha-l-arabinopyranoside, the biflavonoid amentoflavone, (+)-catechin and (-)-epicatechin. The presence of these phenolic compounds may probably explain the antiulcerogenic effect of the extracts of Byrsonima crassa leaves.
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Affiliation(s)
- M Sannomiya
- Departamento de Química Orgânica, Instituto de Química, Rua Francisco Degni s/n, Bairro Quitandinha, c.p. 355, CEP 14800-900, UNESP, Araraquara, SP, Brazil
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29
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Sannomiya M, Rodrigues CM, Coelho RG, dos Santos LC, Hiruma-Lima CA, Souza Brito ARM, Vilegas W. Application of preparative high-speed counter-current chromatography for the separation of flavonoids from the leaves of Byrsonima crassa Niedenzu (IK). J Chromatogr A 2004; 1035:47-51. [PMID: 15117073 DOI: 10.1016/j.chroma.2004.02.050] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The methanolic extract of the leaves of the medicinal plant Byrsonima crassa (Malpighiaceae) contain flavonoids with antioxidant activity. They were separated in a preparative scale using high-speed counter-current chromatography. The optimum solvent system used was composed of a mixture of ethyl acetate-n-propanol-water (140:8:80 (v/v/v)) and led to a successful separation between monoglucosilated flavonoids (quercetin-3-O-alpha-L-arabinoside, quercetin-3-O-beta-D-galactoside) and the biflavonoid amentoflavone in only 3.5 h. The purities of quercetin-3-O-alpha-L-arabinoside (95 mg), quercetin-3-O-beta-D-galactoside (16 mg) and the biflavonoid amentoflavone (114 mg) were all isolated at purity over 95%. Identification was performed by 1H NMR, 13C NMR and UV analyses.
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Affiliation(s)
- Miriam Sannomiya
- Departamento de Química Orgânica, Instituto de Química, UNESP, Rua Francisco Degni s/n, Bairro Quitandinha, CP 355, CEP 14800-900 Araraquara, SP, Brazil.
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30
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Toma W, Gracioso JS, Hiruma-Lima CA, Andrade FDP, Vilegas W, Souza Brito ARM. Evaluation of the analgesic and antiedematogenic activities of Quassia amara bark extract. J Ethnopharmacol 2003; 85:19-23. [PMID: 12576198 DOI: 10.1016/s0378-8741(02)00334-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We evaluated the possible antiedematogenic, antinociceptive and/or sedative effects of four different extracts obtained from the bark of Quassia amara namely, 70% ethanol (70EtOH), 100% ethanol (100EtOH), dichloromethane (DCM) and hexane extracts (HEX). The oral administration (100, 250 and 500 mg/kg) of these extracts did not show significant effects in any experiment. However, when administered intraperitoneally, the HEX extract decreased the paw edema induced by carrageenan, showed antinociceptive effects on the hot-plate test and on acetic acid-induced writhing, and showed sedative effects on pentobarbital-induced sleep. Naloxone did not reverse the antinociceptive effect of this extract. In conclusion, although the mechanisms are uncertain, the results demonstrated that these effects are apparently related to sedative and muscle relaxant or psychomimetic activities of the HEX extract of the plant.
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Affiliation(s)
- W Toma
- Departamento de Fisiologia e Biofi;sica, Instituto de Biologia, Universidade Estadual de Campinas, C.P. 6109, CEP-13083-970, SP, Brazil
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31
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Hiruma-Lima CA, Gracioso JS, Bighetti EJB, Grassi-Kassisse DM, Nunes DS, Brito ARMS. Effect of essential oil obtained from Croton cajucara Benth. on gastric ulcer healing and protective factors of the gastric mucosa. Phytomedicine 2002; 9:523-529. [PMID: 12403161 DOI: 10.1078/09447110260573155] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The bark of Croton cajucara Benth. (Euphorbiaceae) is used widely in Amazonian folk medicine for the treatment of a wide range of gastrointestinal symptoms. Infusions of C. cajucara bark contain dehydrocrotonin (DHC), the furan diterpene, and an essential oil, a rich mixture of sesquiterpenes. Although the antiulcerogenic activity of the essential oil has been studied in different gastric ulcer models in mice and rats, its mechanism remains unclear. In this work, we examined the ability of this essential oil to increase PGE2 release from mucus cells, as well as its effects on the amount of gastric mucus and on the healing of acetic acid-induced gastric ulcers. The essential oil (100 mg/kg body wt., p.o), significantly increased PGE2 production by glandular cells (by 102% as compared to control) and the amount of Alcian blue binding to the gastric mucus. In chronic gastric ulcers, a single daily oral dose of essential oil (100 mg/kg body wt.) for 14 consecutive days accelerated ulcer healing to an extent similar to that seen with an equal dose of cimetidine. Thus, the protective and healing actions of the essential oil from C. cajucara bark on gastric lesions resulted mainly from an increase in PGE2 release and gastric mucus formation which would protect the gastric mucosa.
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Affiliation(s)
- C A Hiruma-Lima
- Departamento de Fisiologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brazil.
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Hiruma-Lima CA, Gracioso JS, Toma W, Almeida AB, Paula AC, Brasil DS, Muller AH, Souza Brito AR. Gastroprotective effect of aparisthman, a diterpene isolated from Aparisthmium cordatum, on experimental gastric ulcer models in rats and mice. Phytomedicine 2001; 8:94-100. [PMID: 11315762 DOI: 10.1078/0944-7113-00017] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Aparisthmium cordatum (Juss.) Bail. (Euphorbiaceae), known in the State of Pará, Brazil as "ariquena queimosa", is a medium-sized tree which is native to the North Brazilian coastal region. Previous phytochemical studies of the bark of A. cordatum yielded a furan diterpenoid with a clerodane skeleton, called aparisthman. Recently, we reported the antiulcerogenic activity of trans-dehydrocrotonin (DHC), a furan diterpene isolated from Croton cajucara bark, in different ulcerogenic models in mice and rats. The aim of the present study was to assess the possible antiulcerogenic activity of aparisthman. When previously administered (p.o.) at the dose of 100 mg/kg(-1), aparisthman reduced significantly (p < 0.01) gastric injury induced by the indomethacin/bethanechol (71%), ethanol (71%), pylorus ligature, (59%) and hypothermic restraint-stress models (50%), in mice and rats. In the HCl/ethanol-induced gastric ulcer model in mice, at oral doses of 100 and 250 mg/kg(-1), aparisthman from A. cordatum reduced significantly (p < 0.001) the formation of gastric lesions by 59% and 66%, respectively, as compared with control. In the pylorus-ligature model, aparisthman (p.o.) decreased the volume of gastric juice as compared with control (p < 0.001). When aparisthman (100 mg/kg(-1)) was administered intraduodenally to mice, significant modifications were found, such as a decrease in gastric acidity as compared with control. In the animals pre-treated with aparisthman, free mucus production increased by 19% in the gastric mucosa (p < 0.05). The results suggest that aparisthman from A. cordatum presents a significant anti-ulcer effect when assessed in these induced ulcer models. Although the mechanism underlying this antiulcerogenic effect remains unknown, it seems to be related to an increase of the defensive mechanisms of the stomach such as prostaglandin synthesis and mucus production. The good yield of aparisthman obtained from A. cordatum, as well as its antiulcerogenic activity, suggest that this compound should be submitted to pharmacological research as a potential new antiulcerogenic drug.
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Affiliation(s)
- C A Hiruma-Lima
- Inst. de Biologia e Saúde Pública, Fund. Universidade do Tocantins, Porto Nacional, Tocantins, Brazil
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Hiruma-Lima CA, Gracioso JD, Toma W, de Paula AC, de Almeida AB, Brasil DD, Muller AH, Brito AR. Evaluation of the gastroprotective activity of cordatin, a diterpene isolated from Aparisthmium cordatum (Euphorbiaceae). Biol Pharm Bull 2000; 23:1465-9. [PMID: 11145179 DOI: 10.1248/bpb.23.1465] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Aparisthmium cordatum (Juss.) BAIL. (Euphorbiaceae) is a medium sized tree native to the North Brazilian coastal region, which is known in the State of Pará as "ariquena queimosa." To our knowledge it has no popular use. Phytochemical studies of the benzene extract of the bark of A. cordatum yielded a furan diterpene with a clerodane skeleton, called cordatin. Recently, we reported the antiulcerogenic activity of trans-dehydrocrotonin (DHC), another furan diterpene isolated from Croton cajucara bark, in different ulcerogenic models in mice and rats. The aim of the present study was to assess the possible antiulcerogenic activity of cordatin, another compound of the clerodane diterpene group present in A. cordatum bark. When previously administered (p.o.) at the dose of 100 mg/kg, cordatin significantly reduced (p<0.01) gastric injury induced by the indomethacin/bethanechol (78%), ethanol (76%), and hypothermic restraint-stress models (66%) and by pylorus ligature (50%) in mice and rats. In the HCl/ethanol-induced gastric ulcer model in mice, at oral doses of 100 and 250 mg/kg, cordatin from A. cordatum significantly reduced (p<0.001) the formation of gastric lesions by 70% and 77%, respectively, when compared to the control. In the pylorus-ligature model, cordatin (p.o.) only decreased the volume of gastric juice compared to the control (p<0.001). When cordatin (100 mg/kg) was administered intraduodenally to mice, significant modifications were found, such as a decrease in gastric acidity compared to the control (p<0.05). In the animals pre-treated with cordatin, free mucus production was not altered when compared with the control group. The results suggest that cordatin from A. cordatum presents a significant anti-ulcer effect when assessed in these induced ulcer models. Although the mechanism underlying this antiulcerogenic effect remains unknown, it seems to be related to an anti-secretory property but the involvement of mucosal defensive mechanisms are not to be ignored. The good yield of cordatin obtained from A. cordatum, as well as its antiulcerogenic activity, suggest that this compound should be submitted to pharmacological research as a potential new antiulcerogenic drug.
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Affiliation(s)
- C A Hiruma-Lima
- Instituto de Biologia e Saúde Pública, Universidade do Tocantins, Porto Nacional, Brazil
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Gracioso JS, Hiruma-Lima CA, Souza Brito AR. Antiulcerogenic effect of a hydroalcoholic extract and its organic fractions of Neurolaena lobata (L.) R.BR. Phytomedicine 2000; 7:283-289. [PMID: 10969721 DOI: 10.1016/s0944-7113(00)80045-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Neurolaena lobata is a species used widely in Caribbean folk medicine to treat gastric pain and ulcers. The hexane (HxF), chloroform (ClF) and aqueous (H2OF) fractions of a hydroalcoholic extract (HE) of N. lobata aerial parts were investigated for their ability to prevent ulceration of the gastric mucosa. In the stress-induced gastric model the HE, HxF and ClF fractions produced a significant reduction of gastric lesion formation by 48, 70 and 52%, respectively. HE, HxF and ClF fractions (41, 57 and 51%, respectively) also reduced significantly the gastric lesions induced by the combination of indomethacin and bethanechol, and the ulcers induced by HCl/ethanol solution by 77, 86 and 83%, respectively (P < 0.05). The pylorus-ligature experiment demonstrated that the HE, HxF and ClF fractions changed significantly the gastric juice parameters, such as pH values (increases to 5.4, 4.9 and 4.8, respectively) and acid output (decreased by 4.6, 5.8 and 6.2 mEq mL(-1) 4h respectively) and gastric content (increased by 400, 410 and 390 mg, respectively) in animals. In the animals pre-treated orally with the HxF fraction, prostaglandin synthesis was increased significantly, by 104%, and free mucus production was increased by 54 % in the gastric mucosa (P < 0.001). The H2OF did not exhibit activity in any of the experimental models assayed. The data suggest that the HE and mainly the HxF of fractions from N. lobata present a significant anti-ulcer effect when assessed in these ulcer-induced models. Although the mechanism underlying this antiulcerogenic effect remains unknown, it seems to be related to an increased activity of the defensive mechanisms of the stomach, such as prostaglandin synthesis and mucus production.
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Affiliation(s)
- J S Gracioso
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Campinas, SP, Brazil
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35
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Hiruma-Lima CA, Gracioso JS, Bighetti EJ, Germonsén Robineou L, Souza Brito AR. The juice of fresh leaves of Boerhaavia diffusa L. (Nyctaginaceae) markedly reduces pain in mice. J Ethnopharmacol 2000; 71:267-274. [PMID: 10904173 DOI: 10.1016/s0378-8741(00)00178-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The decoction or juice of leaves of Boerhaavia diffusa L. (Nyctaginaceae) is used in Martinican folk medicine for its analgesic and anti-inflammatory properties. In the present investigation we studied the acute oral (p.o.) toxicity of a crude extract obtained from a lyophilized decoction (DE) and from the juice (JE) of fresh leaves. We observed no signs of toxicity up to the dose of 5000 mg/kg (p.o.) in mice. At the dose of 1000 mg/kg, neither extract altered sleeping time evoked by the administration of pentobarbital sodium (i.p.). The DE and JE of B. diffusa were assessed in standard rodent models of algesia and inflammation. We investigated the antinociceptive effect of DE and JE in chemical (acetic acid) and thermal (hot plate) models of hyperalgesia in mice. Dipyrone sodium (200 mg/kg), JE (1000 mg/kg) and DE at the same dose (p.o.), produced a significant inhibition of acetic acid-induced abdominal writhing in mice (100, 50 and 47% inhibition, respectively) when compared with the negative control (P<0.001). In the hot-plate test in mice, morphine and JE produced a significant increase in latency during the observation time. The DE, however, only raised the pain thresholds during the first period (30 min) of observation (P<0.05). The extracts of B. diffusa were also investigated for their anti-edematogenic effect on carrageenan-induced edema in mice. However, neither extract inhibited the paw edema induced in mice (P>0.05). In the acetic acid-induced abdominal writhing in mice, pre-treatment of the animals with naloxone (5 mg/kg, i.p.) significantly reversed the analgesic effect of morphine and JE but not that of DE. These data show that the active antinociceptive principle of B. diffusa is present mainly in the juice of fresh leaves and has a significant antinociceptive effect when assessed in these pain models. The mechanism underlying this analgesic effect of fresh leaves of B. diffusa remains unknown, but seems to be related to interaction with the opioid system.
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Affiliation(s)
- C A Hiruma-Lima
- Inst. Biologia e Saúde Pública, CUPN, UNITINS, P. Nacional Campinas, TO, Brazil
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Hiruma-Lima CA, Gracioso JS, Rodríguez JA, Haun M, Nunes DS, Souza Brito AR. Gastroprotective effect of essential oil from Croton cajucara Benth. (Euphorbiaceae). J Ethnopharmacol 2000; 69:229-234. [PMID: 10722204 DOI: 10.1016/s0378-8741(99)00127-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The gastroprotective activity of the essential oil from the bark of Croton cajucara Benth (Euphorbiaceae) was assessed in three different models of experimentally induced gastric ulcer in mice. At oral dose of 100 mg/kg the essential oil reduced gastric lesions induced by hypothermic restraint stress and HCl/ethanol significantly. In the HCl/ethanol model a dose-dependent gastroprotective effect was found. Moreover, significant changes in gastric parameters such as pH, secretion rate and total gastric acid were found after intraduodenal administration of essential oil under ligated pylorus (Shay) conditions. The acute toxicity of essential oil was assessed in mice. The LD50 values were 9.3 and 680 mg/kg for oral and intraperitoneal administrations, respectively. The cytotoxicity of essential oil was studied also. A dose-dependent cell viability inhibition was found in V79 fibroblast cell cultures with an IC50 of 22.9 microg/ml. Our results support the pharmacological study of this essential oil.
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Affiliation(s)
- C A Hiruma-Lima
- Instituto de Biologia, Fundação Universidade Estadual de Tocantins, Porto Nacional, Brasil
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Bighetti EJ, Hiruma-Lima CA, Gracioso JS, Brito AR. Anti-inflammatory and antinociceptive effects in rodents of the essential oil of Croton cajucara Benth. J Pharm Pharmacol 1999; 51:1447-53. [PMID: 10678502 DOI: 10.1211/0022357991777100] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The plant Croton cajucara Benth. (Euphorbiaceae) is widely used in Amazonian folk medicine for the treatment of a wide range of illnesses. In this investigation the analgesic and anti-inflammatory properties of the essential oil from the bark of C. cajucara Benth., administered orally, were determined in several standard rodent models of pain and inflammation. We observed that pretreatment with essential oil significantly reduced the latency of sleeping time evoked by pentobarbital compared with the control group (P < 0.001). Doses of 100 or 1000 mg kg(-1) also increased the sleeping time induced by pentobarbital (30.9 +/- 3.91 and 52.1 +/- 15.6 min, respectively) compared with the negative control (12.4 +/- 4.27 min). We investigated the antinociceptive effect of the essential oil in chemical (acetic acid) and thermal (hot-plate) models of nociception in mice. Dipyrone (200 mg kg(-1)) and the highest doses of the essential oil (1000 mg kg(-1)) significantly inhibited acetic acid-induced abdominal constriction in mice (5.00 +/- 1.38 and 6.8 +/- 2.1 constrictions, respectively) compared with the negative control (33.1 +/- 2). The same dose of essential oil also raised the pain thresholds of mice in the hot-plate test and significantly (P < 0.05) increased the latency at all observation times. In acetic acid-induced abdominal constriction in mice pretreatment of the animals with naloxone (5 mg kg(-1)) significantly reversed the analgesic effect of morphine and of the essential oil at the highest dose (1000 mg kg(-1)). The essential oil of C. cajucara was also investigated for its anti-inflammatory properties. At the lowest dose (100 mg kg(-1)) the essential oil had anti-inflammatory effects in animal models of acute (carrageenin-induced paw oedema in mice) and chronic (cotton pellet granuloma) inflammation. The essential oil at doses of 50, 100 and 200 mg kg(-1) significantly and dose-dependently inhibited carrageenan-induced oedema (49 +/- 5; 37 +/- 5; 34 +/- 8 mg, respectively) compared with the negative control (74 +/- 8 mg). The essential oil (100 mg kg(-1)) also inhibited chronic inflammation by 38% whereas diclofenac inhibited it by 36%. However, the essential oil did not inhibit the migration of neutrophils into the peritoneal cavity. These data show that the essential oil from C. cajucara contains compounds that had a significant antinociceptive effect when the oil was administered at the highest dose. This effect seems to be related to interaction with the opioid system. The essential oil also had a significant anti-inflammatory effect in acute and chronic inflammation models when administered at lower doses. This effect seems to be related to cyclooxygenase inhibition.
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Affiliation(s)
- E J Bighetti
- Departimento de Farmacologia, Faculadade de Ciências Medicas, Kingston, Brazil
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Hiruma-Lima CA, Spadari-Bratfisch RC, Grassi-Kassisse DM, Brito AR. Antiulcerogenic mechanisms of dehydrocrotonin, a diterpene lactone obtained from Croton cajucara. Planta Med 1999; 65:325-330. [PMID: 10364837 DOI: 10.1055/s-1999-13995] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The bark of Croton cajucara Benth, is used in Brazilian folk medicine as an infusion to treat gastrointestinal disorders. The aim of the present study was to assess the mechanisms involved in the antiulcerogenic activity of dehydrocrotonin (DHC), a diterpene isolated from C. cajucara bark. We studied the effects of DHC on pylorus ligature (Shay) in mice treated with the drug (100 mg/kg) by the intraduodenal route. DHC did not induce any alteration in gastric volume in Shay mice but modified the pH and total acid concentration of gastric juice. Incubation of gastric juice with DHC did not reduce gastric acidity compared to control. We also investigated the effects of DHC on the response to histamine of right atria isolated from guinea pigs and on the response to carbachol of stomach fundus strips from rats. The concentration-response curves for the chronotropic effect of histamine in guinea pig right atria were shifted to the right, with a significant decrease in the maximum response, in the presence of DHC. Similar results were obtained with DHC (30 microM) for the concentration-response curves to carbachol in the isolated rat stomach. The ability of DHC to increase PGE2 release from rat stomach mucous cells was also studied. We observed that DHC induced a significant increase in PGE2 production (60% compared to control). In addition, the effects of DHC on the healing of acetic acid-induced gastric ulcer in rats were evaluated 14 days after acid injection. Oral administration of DHC (100 mg/kg per day) for 14 consecutive days had no effect on gastric ulcer healing in rats. Thus, the protective effect of DHC on induced gastric lesions could be due to synergistic effects, e.g., an increase in PGE2 release and non-competitive antagonism of H2-receptors and of muscarinic receptors. Whereas the former result represents an increase in the protective factors, the latter one shows a decrease in the aggressive factors against the gastric mucosa.
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Affiliation(s)
- C A Hiruma-Lima
- Departamento de Fisiologia e Biofísica, Universidade Estadual de Campinas, São Paulo, Brasil
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Hiruma-Lima CA, Gracioso JS, Nunes DS, Souza Brito AR. Effects of an essential oil from the bark of Croton cajucara Benth. on experimental gastric ulcer models in rats and mice. J Pharm Pharmacol 1999; 51:341-6. [PMID: 10344636 DOI: 10.1211/0022357991772349] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Croton cajucara Benth. (Euphorbiaceae) is widely used in Amazonian folk medicine for the treatment of a wide range of gastrointestinal symptoms. The essential oil from its bark was investigated for acute toxicity in mice and for its ability to prevent the formation of ulceration of the gastric mucosa in different models of experimentally induced gastric ulcer in mice and rats. When previously administered orally at a dose of 100 mg kg(-1), the essential oil significantly reduced (P < 0.01) the gastric injury induced by hypothermic restraint stress (48%), indomethacin (47%), ethanol (86%) and pylorus ligature models (87%) in rats. In the HCl/ethanol-induced gastric ulcer model in mice, at oral doses of 100 and 200 mg kg(-1), the essential oil from C. cajucara significantly reduced (P < 0.01) the formation of gastric lesions by 52% and 67%, respectively, when compared with the control group. In rats submitted to pylorus ligature, the essential oil given orally increased the volume of gastric juice when compared with the control group (P < 0.01). When the essential oil (100 mg kg(-1)) was administered intraduodenally to mice, significant modifications were found in gastric parameters such as pH and total acid content after oil treatment. We observed significant changes (P < 0.01) in gastric juice parameters such as an increase in volume and a decrease in gastric acidity (pH and total acid content). The acute toxicologic effects of the essential oil from C. cajucara were assessed in mice. The LD50 values were 9.3 g kg(-1) by the oral route and 680 mg kg(-1) by the intraperitoneal route. The good yield of essential oil obtained from dried C. cajucara bark (1%) as well as its anti-ulcerogenic activity and low toxicity suggest that pharmacological studies of this substance as a potential new anti-ulcerogenic drug are warranted.
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Affiliation(s)
- C A Hiruma-Lima
- Instituto de Biologia, Fund, Universidade do Tocantins, Porto Nacional, Brasil
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Brito AR, Rodríguez JA, Hiruma-Lima CA, Haun M, Nunes DS. Antiulcerogenic activity of trans-dehydrocrotonin from Croton cajucara. Planta Med 1998; 64:126-129. [PMID: 9525103 DOI: 10.1055/s-2006-957388] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
trans-Dehydrocrotonin (DHC), the major diterpene isolated from Croton cajucara Benth, was assayed for antiulcerogenic activity in four induced gastric ulcer models in the rat. At an oral dose of 100 mg/kg DHC showed a significant antiulcerogenic effect on ulcers induced by hypothermic restraint stress, ethanol, and pylorus ligature. No significant changes in indomethacin-induced gastric lesions or modifications in gastric parameters such as wall mucus, secretion rate, pH, and total acid content were found after DHC treatment. The acute toxicological effects of DHC were assessed in mice. The LD50 values were 876 mg/kg and 47.2 mg/kg for oral and intraperitoneal administrations, respectively. The cytotoxicity of DHC was also studied. A dose-dependent inhibition of cell viability was observed in V-79 fibroblast cell cultures with an IC50 of 240 microM. The high yields of DHC obtained from dried C. cajucara barks as well as its good antiulcerogenic activity and low toxicity support the pharmacological study of this compound as a potential new antiulcerogenic drug.
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Affiliation(s)
- A R Brito
- Dep. de Fisiologia e Biofísica, Universidade Estadual de Campinas, São Paulo, Brasil.
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