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Campo-Grande GC, da Luz BB, Maria-Ferreira D, de Paula Werner MF, Cipriani TR. Water-soluble polysaccharides from Piper regnellii (Pariparoba) leaves: Structural characterization and antinociceptive and anti-inflammatory activities. Carbohydr Polym 2023; 319:121142. [PMID: 37567686 DOI: 10.1016/j.carbpol.2023.121142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 06/09/2023] [Accepted: 06/21/2023] [Indexed: 08/13/2023]
Abstract
Piper regnellii is a plant popularly known as "Pariparoba" and it is widely used in folk medicine to treat pain, inflammation, among others. This work presents the extraction, purification and characterization of polysaccharides present in the plant leaves and evaluation of their anti-inflammatory and antinociceptive activities. From the crude aqueous extract of P. regnellii leaves, a polysaccharide fraction named PR30R, predominantly constituted of arabinose, galactose and galacturonic acid monosaccharide units, was obtained. Methylation and NMR analysis showed that the main polysaccharides of PR30R are a type II arabinogalactan, formed by a β-D-Galp-(1 → 3) main chain, substituted at O-6 by side chains of β-D-Galp-(1 → 6), which are substituted at O-3 by non-reducing α-L-Araf ends, and a homogalacturonan, formed by →4)-α-D-GalpA-(1→ units. Intraperitoneal administration of the crude polysaccharide fraction PRSF reduced significantly nociception induced by acetic acid in mice at the doses tested, and the PR30R fraction, derived from PRSF, presented antinociceptive and anti-inflammatory effects at a dose of 0.1096 mg/kg (PRSF ED50). These data support the use of the plant leaves in folk medicine as an herbal tea to treat pain and inflammation.
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Affiliation(s)
| | - Bruna Barbosa da Luz
- Pharmacology Department, Federal University of Paraná, CEP 81.531-980, Curitiba, PR, Brazil
| | - Daniele Maria-Ferreira
- Pharmacology Department, Federal University of Paraná, CEP 81.531-980, Curitiba, PR, Brazil; Instituto de Pesquisa Pelé Pequeno Príncipe, Curitiba, 80250-060, PR, Brazil; Faculdades Pequeno Príncipe, Programa de Pós-graduação em Biotecnologia Aplicada à Saúde da Criança e do Adolescente, Curitiba, 80230-020, PR, Brazil
| | | | - Thales Ricardo Cipriani
- Biochemistry and Molecular Biology Department, Federal University of Paraná, CEP 81.531-980 Curitiba, PR, Brazil.
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Baggio C, Shang J, Nascimento AM, Cipriani TR, MacNaughton W. A179 MECHANISMS OF ACTION INVOLVED IN THE WOUND HEALING EFFECT OF THE DIETARY FIBRE RHAMNOGALACTURONAN. J Can Assoc Gastroenterol 2023. [PMCID: PMC9991182 DOI: 10.1093/jcag/gwac036.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Background Inflammatory bowel diseases (IBD) are chronic and relapsing inflammatory conditions associated with impaired intestinal epithelial barrier. Mucosal healing is the primary goal for IBD treatment since it is a good predictor of clinical remission. We previously showed the direct beneficial effects of rhamnogalacturonan (RGal), a polysaccharide isolated from the plant Acmella oleracea, on intestinal epithelial barrier function with participation of TLR4 and PKC activation. RNAseq data and pathway analysis have indicated the involvement of the canonical nuclear factor kB (NF-kB) signaling pathway. Purpose We hypothesize that RGal increases intestinal epithelial wound healing through FAK-Src/PI3K/NF-kB signaling pathways. Method Caco-2 and T84 cells, and human primary cell monolayers grown from ulcerative colitis patient-derived organoids, were wounded and treated with vehicle (media or 0.5% DMSO in media) or RGal (1000 μg/ml) for 48 h. Wound healing was assessed using either the IncuCyte or ImageXpress Pico live cell imaging systems. Proliferation and apoptosis of cells were evaluated using EdU and TUNEL assays, respectively. Inhibitors were added at the same time (transcription inhibitor Actinomycin D, 5 μg/ml) or 1 h (FAK inhibitor FAK-14, 10 μM, Src inhibitor PP2, 5 μM, PI3K inhibitor LY294002, 20 μM, NF-kB inhibitors Bay 11-7082 and JSH-23, 10 and 20 μM, respectively, or COX-2 inhibitor NS-398, 20 μM) before RGal treatment. Unwounded Caco-2 monolayers treated with RGal (1000 μg/ml) were collected for Western blotting for COX-2 protein. Result(s) In the wound healing assay, RGal (1000 μg/ml) enhanced wound healing by 12.5% at 48 h in Caco-2 cells and by 14.7% at 24 h in T84 cells, compared to control group. RGal (1000 μg/ml) also accelerated the wound closure in colonoid monolayers obtained from ulcerative colitis patient biopsies by 81.3% at 48 h. Neither proliferation nor apoptosis were involved in the RGal effect on wound healing. Treatment of cells with FAK14 (10 μM), PP2 (5 μM), and PI3K (20 μM) significantly prevented the RGal-induced wound healing. Actinomycin D (5 μg/ml), Bay 11-7082 (10 μM) or JSH-23 (20 μM) treatment significantly reversed the effect of RGal on wound healing, showing that the response was transcriptionally dependent and involved NF-kB signaling. Treatment of cells with NS-398 (20 μM) also reversed the effect of RGal on wound healing. COX-2 protein expression was significantly increased at 6 and 12 h after RGal addition to Caco-2 monolayers. Conclusion(s) These data suggest that the plant-based polysaccharide RGal increases intestinal epithelial cell wound healing by increasing cell migration. The RGal effect is dependent on the activation of the FAK-Src/PI3K signaling pathways and subsequently the transcription factor NF-kB and downstream COX-2 protein expression and activity. Our findings show a novel mechanism of action of RGal in wound healing that could help in the resolution of intestinal inflammation and mucosal healing. Please acknowledge all funding agencies by checking the applicable boxes below Other Please indicate your source of funding; NSERC Disclosure of Interest None Declared
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Affiliation(s)
- C Baggio
- University of Calgary, Calgary, Canada
| | - J Shang
- University of Calgary, Calgary, Canada
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Dallazen JL, da Luz BB, Maria-Ferreira D, Nascimento AM, Cipriani TR, de Souza LM, Geppetti P, de Paula Werner MF. Local effects of natural alkylamides from Acmella oleracea and synthetic isobutylalkyl amide on neuropathic and postoperative pain models in mice. Fitoterapia 2022; 160:105224. [PMID: 35659524 DOI: 10.1016/j.fitote.2022.105224] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 03/27/2022] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 11/25/2022]
Abstract
Neuropathic and postoperative pain are clinical conditions that impair the patient's quality of life. The current pharmacotherapy of both painful states is ineffective and accompanied by several side effects. In order to develop new therapeutics targets, the secondary metabolites of plants have been extensively studied. Acmella oleracea ("jambu") is a native plant from the Amazon region and rich in alkylamides, bioactive compounds responsible for inducing anesthetic and chemesthetic sensations. We previously demonstrated that the intraplantar administration of an hexanic fraction (HF) rich in alkylamides from jambu and the synthetic isobutylalkyl amide (IBA) at 0.1 μg/20 μL can promote antinociceptive and anti-inflammatory effects. Thus, this study aimed to evaluate the local effect of HF and IBA (0.1 μg/20 μL) on neuropathic (partial sciatic nerve ligation, PSNL) and postoperative pain (plantar incision surgery, PIS) models in mice. Seven days after the PSNL, the mechanical (von Frey test) and cold (acetone-evoked evaporative cooling) allodynia, and digital gait parameters were analyzed. The intraplantar HF and IBA treatments attenuated the mechanical and cold allodynia as well as the static (max. Contact and print area) and dynamic (stand duration) parameters of digital gait analyses. On the day after PIS, the mechanical allodynia, heat hyperalgesia (hot plate, 52 ± 0.1°C), and spontaneous nociception scores were evaluated. Topical treatment with HF reduced the mechanical allodynia, heat hyperalgesia, and spontaneous nociception scores. In contrast, IBA treatment only partially reduced the mechanical allodynia. In summary, the local treatment with HF was effective on both neuropathic and postoperative pain, as opposed to IBA, which only had an effect on neuropathic pain.
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Affiliation(s)
| | | | - Daniele Maria-Ferreira
- Department of Pharmacology, Federal University of Parana, Curitiba, Brazil; Instituto de Pesquisa Pelé Pequeno Príncipe, Faculdades Pequeno Príncipe, Curitiba, Brazil
| | - Adamara Machado Nascimento
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, Brazil; Multidisciplinary Center, Federal University of Acre, Cruzeiro do Sul, Brazil
| | - Thales Ricardo Cipriani
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, Brazil
| | - Lauro Mera de Souza
- Instituto de Pesquisa Pelé Pequeno Príncipe, Faculdades Pequeno Príncipe, Curitiba, Brazil
| | - Pierangelo Geppetti
- Department of Health Sciences, Section of Clinical Pharmacology and Oncology, University of Florence, Florence, Italy
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Rutckeviski R, Corso CR, Román-Ochoa Y, Cipriani TR, Centa A, Smiderle FR. Agaricus bisporus β-(1 → 6)-d-glucan induces M1 phenotype on macrophages and increases sensitivity to doxorubicin of triple negative breast cancer cells. Carbohydr Polym 2022; 278:118917. [PMID: 34973736 DOI: 10.1016/j.carbpol.2021.118917] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/30/2021] [Accepted: 11/16/2021] [Indexed: 12/31/2022]
Abstract
Mushroom β-d-glucans have demonstrated immunomodulatory activity, which is initiated by their recognition by specific receptors on immune system cells surfaces. Studies indicated that β-d-glucans may present a synergistic effect with chemotherapy drugs. In this study, a linear β-(1 → 6)-d-glucan (B16), isolated from A. bisporus and previously characterized (Mw: 8.26 × 104 g/mol), was evaluated about its capacity to modulate THP-1 macrophages towards an M1 phenotype and induce an antitumoral activity. This was evidenced by the production of pro-inflammatory markers upon B16 treatment (30; 100 μg/mL). The breast tumor cells (MDA-MB-231) viability was not affected by treatment with B16, however, their viability markedly decreased upon treatment with the drug doxorubicin. The results showed a synergic effect of B16 and doxorubicin, which reduced the viability of MDA-MB-231 cells by 31%. Furthermore, B16 treatment provided a sustainable M1 state environment and contributed to increase the sensitivity of breast cancer cells to the doxorubicin treatment.
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Affiliation(s)
- Renata Rutckeviski
- Faculdades Pequeno Príncipe, 80230-020 Curitiba, PR, Brazil; Instituto de Pesquisa Pelé Pequeno Príncipe, 80240-020 Curitiba, PR, Brazil
| | - Claudia Rita Corso
- Faculdades Pequeno Príncipe, 80230-020 Curitiba, PR, Brazil; Instituto de Pesquisa Pelé Pequeno Príncipe, 80240-020 Curitiba, PR, Brazil
| | - Yony Román-Ochoa
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR 81531-980, Brazil
| | - Thales Ricardo Cipriani
- Department of Biochemistry and Molecular Biology, Federal University of Paraná, Curitiba, PR 81531-980, Brazil
| | - Ariana Centa
- Faculdades Pequeno Príncipe, 80230-020 Curitiba, PR, Brazil; Instituto de Pesquisa Pelé Pequeno Príncipe, 80240-020 Curitiba, PR, Brazil
| | - Fhernanda Ribeiro Smiderle
- Faculdades Pequeno Príncipe, 80230-020 Curitiba, PR, Brazil; Instituto de Pesquisa Pelé Pequeno Príncipe, 80240-020 Curitiba, PR, Brazil.
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da Luz BB, Maria-Ferreira D, Dallazen JL, de Oliveira AF, Queiroz Telles JE, Beltrame OC, Cipriani TR, de Paula Werner MF. Effectiveness of the polyphenols-rich Sedum dendroideum infusion on gastric ulcer healing in rats: Roles of protective endogenous factors and antioxidant and anti-inflammatory mechanisms. J Ethnopharmacol 2021; 278:114260. [PMID: 34062247 DOI: 10.1016/j.jep.2021.114260] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 01/20/2021] [Revised: 05/21/2021] [Accepted: 05/25/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Peptic ulcer is an inflammatory disease that therapeutic options are mainly focused in antisecretory drugs. Sedum dendroideum Moc & Sessé ex DC (Crassulaceae) is employed in folk medicine for the treatment of gastric ulcers. Recently, our group demonstrated that Sedum dendroideum infusion (SDI) is rich in polyphenols (flavonol glycosides, myricetin, quercetin and kaempferol) and promoted gastroprotection against acute ulcer models, without changes gastric acid secretion. AIM OF THE STUDY Here, we follow the investigation of the healing effects of SDI (ED50 = 191 mg/kg) in the chronic gastric ulcer model induced by 80% acetic acid in rats, elucidating underlying mechanisms. MATERIAL AND METHODS Rats were orally treated with vehicle (water, 1 mL/kg), SDI (191 mg/kg), omeprazole (40 mg/kg) or sucralfate (100 mg/kg) twice daily for 5 days after ulcer induction. Following treatments, toxicological effects, macroscopic ulcer appearance, microscopic histological (HE, mucin PAS-staining) and immunohistochemical (PCNA and HSP70) analysis, inflammatory (MPO and NAG activity, cytokine levels measurements) and antioxidant (SOD and CAT) parameters were investigated in gastric ulcer tissues. RESULTS Oral treatment with SDI accelerated gastric ulcer healing, maintained mucin content and promoted epithelial cell proliferation. SDI also reduced neutrophil and mononuclear leukocyte infiltration, TNF-α and IL-1β levels and the oxidative stress, restoring SOD and CAT activities in the ulcer tissue. CONCLUSIONS The gastric healing effect of SDI was mediated through endogenous protective events as well as due to the anti-inflammatory and antioxidant actions. Our observations support and reinforce the traditional utilize of Sedum dendroideum as a natural nontoxic therapeutic alternative for the treatment of gastric ulcers.
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Affiliation(s)
| | - Daniele Maria-Ferreira
- Department of Pharmacology, Federal University of Parana, Curitiba, PR, Brazil; Pelé Pequeno Príncipe Research Institute, Faculdades Pequeno Príncipe, Curitiba, PR, Brazil
| | - Jorge Luiz Dallazen
- Department of Pharmacology, Federal University of Parana, Curitiba, PR, Brazil
| | - Ana Flávia de Oliveira
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, PR, Brazil
| | | | - Olair Carlos Beltrame
- Department of Veterinary Medicine, Federal University of Parana, Curitiba, PR, Brazil
| | - Thales Ricardo Cipriani
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, PR, Brazil
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Maria-Ferreira D, Dallazen JL, Corso CR, Nascimento AM, Cipriani TR, da Silva Watanabe P, de Mello Gonçales Sant'Ana D, Baggio CH, de Paula Werner MF. Rhamnogalacturonan polysaccharide inhibits inflammation and oxidative stress and alleviates visceral pain. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104483] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Carlotto J, de Almeida Veiga A, de Souza LM, Cipriani TR. Polysaccharide fractions from Handroanthus heptaphyllus and Handroanthus albus barks: Structural characterization and cytotoxic activity. Int J Biol Macromol 2020; 165:849-856. [PMID: 33010272 DOI: 10.1016/j.ijbiomac.2020.09.218] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 01/08/2023]
Abstract
Barks of trees of the genus Handroanthus are known for their antitumor activity, which is attributed to naphthoquinones. Another class of molecules that has shown antitumor activity are the polysaccharides, however those from Handroanthus barks have never been studied. Accordingly, the aim of this study was to extract polysaccharides from H. heptaphyllus and H. albus barks, to characterize them structurally and to evaluate their cytotoxic effects on the human colon and human breast cancer cell lines, Caco-2 and MCF-7, respectively. The polysaccharides were extracted with boiling water and fractionated by freeze-thawing process. The soluble polysaccharide fractions HHBSF and HABSF were characterized by monosaccharide composition, methylation and NMR analyses, and their effects on proliferation of Caco-2 and MCF-7 cells were evaluated using MTT cell viability assay. HHBSF and HABSF were mainly constituted of galactoglucomannan, type II arabinogalactan (AGII) and type I rhamnogalacturonan (RGI), however, only HABSF significantly inhibited the growth of MCF-7 (CC50 = 327 μg/mL) and Caco-2 (CC50 = 2258 μg/mL) cells. Differences in the fine structure and proportion of their polysaccharides, and maybe in the composition of associated phenolic compounds could explain the different effects of HHBSF and HABSF.
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Affiliation(s)
- Juliane Carlotto
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19046, Curitiba CEP 81.531-980, PR, Brazil
| | - Alan de Almeida Veiga
- Instituto de Pesquisa Pelé Pequeno Príncipe, Faculdades Pequeno Príncipe, Curitiba CEP 80250-060, PR, Brazil
| | - Lauro Mera de Souza
- Instituto de Pesquisa Pelé Pequeno Príncipe, Faculdades Pequeno Príncipe, Curitiba CEP 80250-060, PR, Brazil
| | - Thales Ricardo Cipriani
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19046, Curitiba CEP 81.531-980, PR, Brazil.
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de Oliveira Barddal HP, Faria FAM, Nogueira AV, Iacomini M, Cipriani TR. Anticoagulant and antithrombotic effects of chemically sulfated guar gum. Int J Biol Macromol 2020; 145:604-610. [PMID: 31883892 DOI: 10.1016/j.ijbiomac.2019.12.210] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 12/18/2019] [Accepted: 12/23/2019] [Indexed: 12/17/2022]
Abstract
Heparin is an extremely important and recognized anticoagulant and antithrombotic agent. Obtained from animal sources and being highly potent, risks of contamination by pathogens and bleeding are some concerns related to heparin use. In the search for alternatives to heparin, several researches have been performed with chemically sulfated polysaccharides obtained from non-animal sources. In this work, studies with guar gum led to a partially hydrolyzed and chemically sulfated derivative (hGGSL) with Mw of 15.6 kDa, DS of 1.91 and promising anticoagulant and antithrombotic properties. In vitro, hGGSL was only 4.5× less potent than unfractionated heparin, acting mainly by inhibiting thrombin via antithrombin, and had its anticoagulant activity inhibited by protamine. In vivo, hGGSL showed potential for subcutaneous use and was effective in reducing venous thrombosis. Collectively, the results provide a basis for the development of a new anticoagulant and antithrombotic agent.
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Affiliation(s)
- Helyn Priscila de Oliveira Barddal
- Department of Biochemistry and Molecular Biology, Sector of Biological Sciences, Federal University of Paraná, CP 19.046, CEP 81.531-980 Curitiba, PR, Brazil
| | - Franciê Assis Melo Faria
- Department of Biochemistry and Molecular Biology, Sector of Biological Sciences, Federal University of Paraná, CP 19.046, CEP 81.531-980 Curitiba, PR, Brazil
| | - Alexsandro Vinícius Nogueira
- Department of Biochemistry and Molecular Biology, Sector of Biological Sciences, Federal University of Paraná, CP 19.046, CEP 81.531-980 Curitiba, PR, Brazil
| | - Marcello Iacomini
- Department of Biochemistry and Molecular Biology, Sector of Biological Sciences, Federal University of Paraná, CP 19.046, CEP 81.531-980 Curitiba, PR, Brazil
| | - Thales Ricardo Cipriani
- Department of Biochemistry and Molecular Biology, Sector of Biological Sciences, Federal University of Paraná, CP 19.046, CEP 81.531-980 Curitiba, PR, Brazil.
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Carlotto J, Maria-Ferreira D, de Souza LM, da Luz BB, Dallazen JL, de Paula Werner MF, Cipriani TR. A polysaccharide fraction from “ipê-roxo” (Handroanthus heptaphyllus) leaves with gastroprotective activity. Carbohydr Polym 2019; 226:115239. [DOI: 10.1016/j.carbpol.2019.115239] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 08/14/2019] [Accepted: 08/22/2019] [Indexed: 02/07/2023]
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Shang J, Baggio CH, Nascimento AM, Cipriani TR, MacNaughton WK. RGal Increases Intestinal Epithelial Barrier Function in a PKC‐Dependent Manner and Drives an Inflammatory Gene Expression Profile. FASEB J 2019. [DOI: 10.1096/fasebj.2019.33.1_supplement.711.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Judie Shang
- Physiology & PharmacologyUniversity of CalgaryCalgaryABCanada
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Shang J, Baggio CH, Nascimento AM, Cipriani TR, MacNaughton W. A252 THE DIETARY FIBRE, RHAMNOGALACTURONAN (RGAL), DRIVES AN INFLAMMATORY GENE EXPRESSION PROFILE IN INTESTINAL EPITHELIAL CELLS. J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J Shang
- Physiology & Pharmacology, University of Calgary, Calgary, AB, Canada
| | - C H Baggio
- Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - A M Nascimento
- Federal University of Acre – Campus Forest, Cruzeiro do Sul, Acre, Brazil
| | - T R Cipriani
- Federal University of Parana, Curitiba, Parana, Brazil
| | - W MacNaughton
- Physiology & Pharmacology, University of Calgary, Calgary, AB, Canada
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Baggio CH, Shang J, Nascimento AM, Cipriani TR, Stephens M, von der Weid P, MacNaughton W. A73 DIETARY FIBRE IMPROVES INTESTINAL EPITHELIAL BARRIER FUNCTION THROUGH TLR4 ACTIVATION. J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- C H Baggio
- Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - J Shang
- Physiology & Pharmacology, University of Calgary, Calgary, AB, Canada
| | - A M Nascimento
- Federal University of Acre – Campus Forest, Cruzeiro do Sul, Acre, Brazil
| | - T R Cipriani
- Federal University of Parana, Curitiba, Parana, Brazil
| | - M Stephens
- Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
| | - P von der Weid
- Physiology and Pharmacology, University of Calgary, Calgary, AB, Canada
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da Luz BB, de Oliveira AF, Maria Ferreira D, Dallazen JL, Cipriani TR, de Souza LM, Werner MFDP. Chemical composition, antioxidant and gastrointestinal properties of Sedum dendroideum Moc & Sessé ex DC leaves tea infusion. J Ethnopharmacol 2019; 231:141-151. [PMID: 30445105 DOI: 10.1016/j.jep.2018.11.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 08/21/2018] [Revised: 11/06/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sedum dendroideum Moc & Sessé ex DC (Crassulaceae) is a medicinal plant employed in Mexican and Brasilian folk medicine as juice or infusion, as remedy for the treatment of different diseases, including gastric disorders. AIM OF THE STUDY Although some studies carried out with Sedum dendroideum have demonstrated its gastroprotective effect, the purpose of this study was to elucidate the chemical constituents, antioxidant, cytotoxic and mechanisms underlying the gastrointestinal properties of Sedum dendroideum accordingly its traditional use, as fresh leaves tea infusion (SDI). MATERIALS AND METHODS Chemical constituents were analyzed using high performance liquid chromatography and mass spectrometry (HPLC-MS). Antioxidant and cytotoxicity were evaluated in in vitro assays. The efficacy of the SDI on macroscopic ulcer appearance, mucus and GSH maintenance on ethanol- and indomethacin-induced ulcer models, gastric acid secretion and gastrointestinal motility were investigated. RESULTS Phytochemical analysis by HPLC-MS revealed the presence of different flavonol glycosides, containing myricetin and quercetin, along with the kaempferol as aglycones. In vitro pharmacological investigation of SDI demonstrated potent antioxidant activity in DPPH assay (IC50: 13.25 ± 3.37 µg/mL) and absence of cytotoxicity in Caco-2 cells by MTT method. Oral administration of SDI (ED50 of 191.00 ± 0.08 mg/kg) in rats promoted gastroprotection against ethanol or indomethacin in rats through reinforcement of gastric wall mucus, GSH content and nitric oxide release, without present antisecretory properties. The gastroprotective effect was maintained when SDI (19 mg/kg) was administrated by intraperitoneal route. Furthermore, SDI (150 mg/kg) unchanged the gastric emptying but increase small bowel transit in mice through cholinergic pathways. CONCLUSIONS Collectively, this study confirmed that Sedum dendroideum promotes gastroprotection through preventing of endogenous defense mechanisms, represented by mucus and GSH without changes gastric acid secretion. Sedum dendroideum tea infusion features a chemical profile that contributes to the antioxidant and gastric health-promoting effects, supporting the use in folk medicine for the treatment of gastrointestinal disorders.
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Affiliation(s)
| | - Ana Flávia de Oliveira
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, PR, Brazil
| | - Daniele Maria Ferreira
- Department of Pharmacology, Federal University of Parana, Curitiba, PR, Brazil; Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, PR, Brazil
| | - Jorge Luiz Dallazen
- Department of Pharmacology, Federal University of Parana, Curitiba, PR, Brazil
| | - Thales Ricardo Cipriani
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, PR, Brazil
| | - Lauro Mera de Souza
- Department of Biochemistry and Molecular Biology, Federal University of Parana, Curitiba, PR, Brazil; Pelé Pequeno Príncipe Research Institute, Faculdades Pequeno Príncipe, Curitiba, PR, Brazil
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Dallazen JL, Maria-Ferreira D, da Luz BB, Nascimento AM, Cipriani TR, de Souza LM, Glugoski LP, Silva BJG, Geppetti P, de Paula Werner MF. Distinct mechanisms underlying local antinociceptive and pronociceptive effects of natural alkylamides from Acmella oleracea compared to synthetic isobutylalkyl amide. Fitoterapia 2018; 131:225-235. [DOI: 10.1016/j.fitote.2018.11.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 11/05/2018] [Accepted: 11/06/2018] [Indexed: 10/27/2022]
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Maria-Ferreira D, Nascimento AM, Cipriani TR, Santana-Filho AP, Watanabe PDS, Sant Ana DDMG, Luciano FB, Bocate KCP, van den Wijngaard RM, Werner MFDP, Baggio CH. Rhamnogalacturonan, a chemically-defined polysaccharide, improves intestinal barrier function in DSS-induced colitis in mice and human Caco-2 cells. Sci Rep 2018; 8:12261. [PMID: 30115942 PMCID: PMC6095889 DOI: 10.1038/s41598-018-30526-2] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [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] [Received: 05/31/2018] [Accepted: 07/27/2018] [Indexed: 12/27/2022] Open
Abstract
Natural polysaccharides have emerged as an important class of bioactive compounds due their beneficial biological effects. Here we investigated the protective and healing effects of rhamnogalacturonan (RGal) isolated from Acmella oleracea (L.) R.K. Jansen leaves in an experimental model of intestinal inflammation in mice and in heterogeneous human epithelial colorectal adenocarcinoma cells (Caco-2). The findings demonstrated that RGal treatment for 7 days reduced the severity of DSS-induced colitis by protecting mice from weight loss, macroscopic damage and reduction of colon length. When compared to the DSS group, RGal also protected the colon epithelium and promoted the maintenance of mucosal enterocytes and mucus secreting goblet cells, in addition to conserving collagen homeostasis and increasing cell proliferation. In an in vitro barrier function assay, RGal reduced the cellular permeability after exposure to IL-1β, while decreasing IL-8 secretion and claudin-1 expression and preserving the distribution of occludin. Furthermore, we also observed that RGal accelerated the wound healing in Caco-2 epithelial cell line. In conclusion, RGal ameliorates intestinal barrier function in vivo and in vitro and may represent an attractive and promising molecule for the therapeutic management of ulcerative colitis.
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Affiliation(s)
- Daniele Maria-Ferreira
- Department of Pharmacology, Universidade Federal do Paraná, Curitiba, Brazil
- Department of Biochemistry and Molecular Biology, Universidade Federal do Paraná, Curitiba, Brazil
| | | | - Thales Ricardo Cipriani
- Department of Biochemistry and Molecular Biology, Universidade Federal do Paraná, Curitiba, Brazil
| | | | - Paulo da Silva Watanabe
- Department of Biosciences and Physiopathology, Universidade Estadual de Maringá, Maringá, Brazil
| | | | - Fernando Bittencourt Luciano
- Department of Animal Science, School of Life Sciences, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil
| | - Karla Carolina Paiva Bocate
- Department of Animal Science, School of Life Sciences, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil
| | - René M van den Wijngaard
- Tytgat Institute for Liver and Intestinal Research, Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
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Oliveira AFD, Nascimento GED, Iacomini M, Cordeiro LMC, Cipriani TR. Chemical structure and anti-inflammatory effect of polysaccharides obtained from infusion of Sedum dendroideum leaves. Int J Biol Macromol 2017; 105:940-946. [DOI: 10.1016/j.ijbiomac.2017.07.122] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 07/05/2017] [Accepted: 07/18/2017] [Indexed: 02/08/2023]
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Román Ochoa Y, Iacomini M, Sassaki GL, Cipriani TR. Sulfation of fucogalactan from Agaricus bisporus: Different patterns in the chemical structure and their effects on anticoagulant activity. Int J Biol Macromol 2017; 97:357-364. [DOI: 10.1016/j.ijbiomac.2017.01.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 11/27/2016] [Accepted: 01/05/2017] [Indexed: 10/20/2022]
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Santana AG, Gracher AHP, Rüdiger AL, Zanchin NIT, Carvalho PC, Cipriani TR, de Arruda Campos Brasil de Souza T. Identification of potential targets for an anticoagulant pectin. J Proteomics 2017; 151:243-250. [DOI: 10.1016/j.jprot.2016.06.013] [Citation(s) in RCA: 2] [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: 02/02/2016] [Revised: 05/25/2016] [Accepted: 06/09/2016] [Indexed: 01/03/2023]
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de Oliveira Barddal HP, Gracher AHP, Simas-Tosin FF, Iacomini M, Cipriani TR. Anticoagulant activity of native and partially degraded glycoglucuronomannan after chemical sulfation. Int J Biol Macromol 2015; 80:328-33. [DOI: 10.1016/j.ijbiomac.2015.06.051] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 06/10/2015] [Accepted: 06/26/2015] [Indexed: 11/27/2022]
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Sassaki GL, Guerrini M, Serrato RV, Santana Filho AP, Carlotto J, Simas-Tosin F, Cipriani TR, Iacomini M, Torri G, Gorin PAJ. Monosaccharide composition of glycans based on Q-HSQC NMR. Carbohydr Polym 2014; 104:34-41. [DOI: 10.1016/j.carbpol.2013.12.046] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 11/18/2013] [Accepted: 12/13/2013] [Indexed: 11/24/2022]
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Maria-Ferreira D, da Silva LM, Mendes DAGB, Cabrini DDA, Nascimento AM, Iacomini M, Cipriani TR, Santos ARS, de Paula Werner MF, Baggio CH. Rhamnogalacturonan from Acmella oleracea (L.) R.K. Jansen: gastroprotective and ulcer healing properties in rats. PLoS One 2014; 9:e84762. [PMID: 24416280 PMCID: PMC3885607 DOI: 10.1371/journal.pone.0084762] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 11/19/2013] [Indexed: 01/14/2023] Open
Abstract
A rhamnogalacturonan (RGal) isolated from Acmella oleracea (L.) R.K. Jansen administered by oral route showed gastroprotective activity against acute lesions induced by ethanol. In this study, we investigated the gastric ulcer healing effect of RGal and its mechanisms of action. Intraperitoneal treatment of animals with RGal protected the gastric mucosa against acute lesions induced by ethanol, with participation of gastric mucus. Furthermore, in the chronic ulcer model, oral administration of RGal accelerates the gastric ulcer healing, accompanied by increasing of cellular proliferation and gastric mucus content, reducing inflammatory parameters and oxidative stress. In addition, the repeated 7 days-treatment of animals with RGal did not show alterations of clinical and behavioral symptoms, body and organs weights or plasmatic biochemical parameters. Collectively, these results showed that RGal has an interesting antiulcerogenic activity and could constitute an attractive molecule of interest for the development of new antiulcer agents.
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Affiliation(s)
- Daniele Maria-Ferreira
- Department of Pharmacology, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, Brazil
| | - Luisa Mota da Silva
- Department of Pharmacology, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, Brazil
| | | | - Daniela de Almeida Cabrini
- Department of Pharmacology, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, Brazil
| | - Adamara Machado Nascimento
- Department of Biochemistry and Molecular Biology, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, Brazil
| | - Marcello Iacomini
- Department of Biochemistry and Molecular Biology, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, Brazil
| | - Thales Ricardo Cipriani
- Department of Biochemistry and Molecular Biology, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, Brazil
| | - Adair Roberto Soares Santos
- Department of Physiological Sciences, Center of Biological Sciences, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | | | - Cristiane Hatsuko Baggio
- Department of Pharmacology, Sector of Biological Sciences, Federal University of Paraná, Curitiba, PR, Brazil
- * E-mail:
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Nomura ECO, Rodrigues MRA, da Silva CF, Hamm LA, Nascimento AM, de Souza LM, Cipriani TR, Baggio CH, Werner MFDP. Antinociceptive effects of ethanolic extract from the flowers of Acmella oleracea (L.) R.K. Jansen in mice. J Ethnopharmacol 2013; 150:583-589. [PMID: 24051025 DOI: 10.1016/j.jep.2013.09.007] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [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: 06/07/2013] [Revised: 09/04/2013] [Accepted: 09/06/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In Brazil, Acmella oleracea (L.) R.K. Jansen, popularly known as "jambu", has been used by some communities from Amazon region to treat toothache. In this study we examined the antinociceptive effect of the ethanolic extract obtained from the flowers of Acmella oleracea (EEAO) in animal models of nociceptive (chemical and thermal) and neuropathic (partial sciatic nerve ligation) pain. MATERIALS AND METHODS Adult male mice were treated by intraperitoneal route (i.p.) with EEAO before the induction of nociceptive response by formalin, capsaicin and cinnamaldehyde, thermal heat hyperalgesia (hot plate test) and mechanical allodynia (traumatic sciatic nerve injury). Acute toxicity and non-specific sedative effects were evaluated. RESULTS EEAO (10, 30 and 100 mg/kg) reduced both neurogenic and inflammatory phases of the formalin- and also capsaicin- and cinnamaldehyde-induced orofacial nociception. Interestingly, EEAO at 100mg/kg (i.p.) also reversed capsaicin-induced heat hyperalgesia assessed as the latency to paw withdrawal in the hot plate test. Also in the hot plate test, paw withdrawal latency was increased by EEAO (100 mg/kg) and this response was only partially reversed by naloxone. Furthermore, EEAO (100 mg/kg) also reduced mechanical allodynia caused by partial sciatic nerve ligation for 3 h. The estimated LD50 value was 889.14 mg/kg and EEAO did not alter the locomotion of animals in the open-field test. CONCLUSION Taken together, our data show that EEAO produces prevalent antinociceptive effects and does not cause adverse effects. The presence of N-alkylamides, including spilanthol, suggests that the therapeutic effect of EEAO is related to its highest anesthetic activity.
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Affiliation(s)
- Ellen Cristine Ogata Nomura
- Department of Pharmacology, Sector of Biological Sciences, Federal University of Parana, Curitiba, PR, Brazil
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Leme TDSV, Prando TBL, Gasparotto FM, de Souza P, Crestani S, de Souza LM, Cipriani TR, Lourenço ELB, Gasparotto A. Role of prostaglandin/cAMP pathway in the diuretic and hypotensive effects of purified fraction of Maytenus ilicifolia Mart ex Reissek (Celastraceae). J Ethnopharmacol 2013; 150:154-161. [PMID: 23993909 DOI: 10.1016/j.jep.2013.08.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 05/07/2013] [Revised: 07/04/2013] [Accepted: 08/11/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Although Maytenus ilicifolia is used in Brazilian folk medicine as a diuretic drug, no study has been conducted to this date in order to evaluate this ethnopharmacological statement. So, the aim of this study was to evaluate possible mechanisms involved in acute diuretic activity of the ethanolic supernatant of the infusion (SEI) obtained from Maytenus ilicifolia and to assess its relationship with a hypotensive activity by a bioassay-guided fractionation using normotensive Wistar rats. MATERIAL AND METHODS The preparation obtained from the infusion (SEI) and their respective fractions (Fr·H2O and Fr·EtOAc) were orally administered in a single dose to rats. The urine excretion rate, pH, density, conductivity and content of Na(+), K(+), Cl(-) and HCO3(-) were measured in the urine of saline-loaded animals. Samples of the concentration of electrolytes, urea, creatinine, aldosterone, vasopressin and angiotensin converting enzyme (ACE) activity were evaluated in collected serum. The hypotensive activity and the involvement of nitric oxide, bradykinin and prostaglandin/cAMP pathway in the hypotensive and diuretic effects were also determined. RESULTS Water and Na(+) excretion rate were significantly increased by Fr·EtOAc and the arterial pressure was significantly reduced, while the urinary excretion of potassium and chloride were reduced. Pre-treatment with indomethacin or DDA (2',5'-dideoxyadenosine) significantly reduced the hypotensive and diuretic activity observed. All other parameters evaluated were not affected by any treatment. CONCLUSION The present study reveals that Fr·EtOAc obtained from Maytenus ilicifolia may present compounds responsible for diuretic and hypotensive activities, and this effect, could involve the prostaglandin/cAMP pathway.
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Ruthes AC, Carbonero ER, Córdova MM, Baggio CH, Santos ARS, Sassaki GL, Cipriani TR, Gorin PAJ, Iacomini M. Lactarius rufus (1→3),(1→6)-β-D-glucans: structure, antinociceptive and anti-inflammatory effects. Carbohydr Polym 2013; 94:129-36. [PMID: 23544521 DOI: 10.1016/j.carbpol.2013.01.026] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 12/23/2012] [Accepted: 01/13/2013] [Indexed: 11/29/2022]
Abstract
Medicinal health benefits uses of edible as well as non-edible mushrooms have been long recognized. The pharmacological potential of mushrooms, especially antitumor, immunostimulatory and anti-inflammatory activities has been documented. Wild ectomycorrhizal mushroom, Lactarius rufus had the anti-inflammatory and antinociceptive potential of their polysaccharides evaluated using the formalin model. Two structurally different (1→3),(1→6)-linked β-D-glucans were isolated from fruiting bodies. Soluble (FSHW) β-D-glucan 1-30 mg kg(-1) produced potent inhibition of inflammatory pain caused by formalin when compared with the insoluble one (IHW), suggesting that solubility and/or branching degree could alter the activity of β-glucans. Their structures were determined using mono- and bi-dimensional NMR spectroscopy, methylation analysis, and controlled Smith degradation. They were β-D-glucans, with a main chain of (1→3)-linked Glcp residues, substituted at O-6 by single-unit Glcp side chains (IHW), on average to every fourth residue of the backbone, or by mono- and few oligosaccharide side chains for soluble β-glucan.
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Affiliation(s)
- Andrea Caroline Ruthes
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, CP 19046, CEP 81531-980, Curitiba, PR, Brazil
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da Silva LM, Allemand A, Mendes DAGB, Dos Santos AC, André E, de Souza LM, Cipriani TR, Dartora N, Marques MCA, Baggio CH, Werner MF. Ethanolic extract of roots from Arctium lappa L. accelerates the healing of acetic acid-induced gastric ulcer in rats: Involvement of the antioxidant system. Food Chem Toxicol 2012; 51:179-87. [PMID: 23036453 DOI: 10.1016/j.fct.2012.09.026] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Revised: 09/21/2012] [Accepted: 09/23/2012] [Indexed: 01/12/2023]
Abstract
We evaluate the curative efficacy of the ethanolic extract (EET) of roots from Arctium lappa (bardana) in healing of chronic gastric ulcers induced by 80% acetic acid in rats and additionally studies the possible mechanisms underlying this action. Oral administration of EET (1, 3, 10 and 30mg/kg) reduced the gastric lesion area in 29.2%, 41.4%, 59.3% and 38.5%, respectively, and at 10mg/kg promoted significant regeneration of the gastric mucosa, which was confirmed by proliferating cell nuclear antigen immunohistochemistry. EET (10mg/kg) treatment did not increase the gastric mucus content but restored the superoxide dismutase activity, prevented the reduction of glutathione levels, reduced lipid hydroperoxides levels, inhibited the myeloperoxidase activity and reduced the microvascular permeability. In addition, EET reduced the free radical generation and increased scavenging of 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radicals in vitro. Furthermore, intraduodenal EET (10 and 30mg/kg) decreased volume and acidity of gastric secretion. Total phenolic compounds were high in EET (Folin-Ciocalteau assay) and the analysis by liquid chromatography-mass spectrometry revealed that the main compounds present in EET were a serie of hydroxycinnamoylquinic acid isomers. In conclusion, these data reveal that EET promotes regeneration of damaged gastric mucosa, probably through its antisecretory and antioxidative mechanisms.
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Affiliation(s)
- Luisa Mota da Silva
- Department of Pharmacology, Federal University of Parana, Curitiba, PR, Brazil
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Tanaka LYA, de Oliveira AJB, Gonçalves JE, Cipriani TR, de Souza LM, Marques MCA, de Paula Werner MF, Baggio CH, Gorin PAJ, Sassaki GL, Iacomini M. An arabinogalactan with anti-ulcer protective effects isolated from Cereus peruvianus. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.05.043] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Baggio CH, Freitas CS, Mayer B, Dos Santos AC, Twardowschy A, Potrich FB, Cipriani TR, de Souza LM, Sassaki GL, Iacomini M, Marques MCA, Mesia-Vela S. Muscarinic-dependent inhibition of gastric emptying and intestinal motility by fractions of Maytenus ilicifolia Mart ex. Reissek. J Ethnopharmacol 2009; 123:385-391. [PMID: 19501270 DOI: 10.1016/j.jep.2009.03.037] [Citation(s) in RCA: 15] [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] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Revised: 03/15/2009] [Accepted: 03/21/2009] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Maytenus ilicifolia Mart. ex. Reissek (Celastraceae) is widely used in Brazilian folk medicine to treat gastric disturbances. AIM OF THE STUDY This work intended to characterize the effects of Maytenus ilicifolia on gastrointestinal motility. MATERIALS AND METHODS Gastric emptying and intestinal transit were measured in the same animal. Mice received a semisolid marked with phenol red, half an hour after treatment with extracts. The amount of marker in the stomach and the distance reached in the intestine after 15 min were measured as index of gastrointestinal emptying and intestinal transit, respectively. RESULTS Intraperitoneal administration of a flavonoid-rich extract potently reduced the gastric emptying (ED(50)=89 mg/kg) and the intestinal transit (ED(50)=31 mg/kg) of mice. Bio-guided purification of the flavonoid-rich extract by chemical partition with solvents of decreasing polarity yielded fraction insF with about 12-14 times higher activity than the initial flavonoid extract in both the gastric emptying and the intestinal transit. The inhibitory effects of the insF (9.7 mg/kg, i.p.) on gastric emptying and intestinal transit were reversed by co-administration of bethanechol (10 mg/kg, s.c.) but not by co-administration of metoclopramide (30 mg/kg, p.o.) indicating muscarinic but not dopaminergic interaction of the compounds of Maytenus. Chemical investigation of the insF fraction by HPLC-MS allowed the identification of 4 free flavonoids (catechin, epicatechin, quercetin and kaempferol), 29 flavonol glycosides and 8 tannins. The flavonol glycosides ranged from 1 to 4 monosaccharide units, having mainly quercetin and kaempferol as aglycone moieties, and the tannins were composed by catechin/epicatechin and/or afzelechin/epiafzelechin. CONCLUSIONS Overall, the results indicate that the components of Maytenus ilicifolia have a potential use in the treatment of gastrointestinal motility disturbances such as diarrhea.
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Affiliation(s)
- Cristiane Hatsuko Baggio
- Department of Pharmacology, Sector of Biological Sciences, Universidade Federal do Paraná, Curitiba, PR, Brazil
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Baggio CH, Freitas CS, Otofuji GDM, Cipriani TR, Souza LMD, Sassaki GL, Iacomini M, Marques MCA, Mesia-Vela S. Flavonoid-rich fraction of Maytenus ilicifolia Mart. ex. Reiss protects the gastric mucosa of rodents through inhibition of both H+,K+ -ATPase activity and formation of nitric oxide. J Ethnopharmacol 2007; 113:433-40. [PMID: 17706386 DOI: 10.1016/j.jep.2007.06.015] [Citation(s) in RCA: 26] [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: 02/06/2007] [Revised: 06/06/2007] [Accepted: 06/29/2007] [Indexed: 05/16/2023]
Abstract
Maytenus ilicifolia Mart. ex. Reissek (Celastraceae), a medicinal plant known in Brazil as "espinheira-santa" is commonly used to treat gastric disorders. The effect of the flavonoid-rich fraction separated from the leaves was evaluated for its gastroprotective properties and the mechanism(s) involved in this activity. Intraperitoneal administration of the flavonoid-rich fraction potently protected rats from experimentally induced chronic (ED(50)=79 mg/kg) and acute gastric lesions by ethanol (ED(50)=25mg/kg) and indomethacin (ED(50)=4 mg/kg) without altering the decreased amount of cytoprotective glutathione and mucus amount in the injured gastric mucosa. A potent reduction of gastric acid hypersecretion (ED(50)=7 mg/kg, i.p.) was accompanied by a reduction of nitric oxide release (ED(50)=1.6 mg/kg, i.p.) in the gastric secretion of 2h pylorus ligated rats which suggests an important role for nitric oxide-dependent mechanisms. Inhibition of gastric acid secretion in vivo was correlated with the in vitro inhibition of rabbit gastric H(+),K(+)-ATPase activity (IC(50)=41 microg/mL). Chemical investigation of the fraction showed galactitol (25%), epicatechin (3.1%) and catechin (2%) as the majoritary components. Collectively, the results show that the flavonoid-rich fraction of Maytenus ilicifolia potently protects animals from gastric lesions with high potency through inhibition of gastric acid secretion.
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Affiliation(s)
- Cristiane Hatsuko Baggio
- Department of Pharmacology, Sector of Biological Sciences, Universidade Federal do Paraná, Curitiba, PR, Brazil
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Graça C, Baggio CH, Freitas CS, Rattmann YD, de Souza LM, Cipriani TR, Sassaki GL, Rieck L, Pontarolo R, da Silva-Santos JE, Marques MCA. In vivo assessment of safety and mechanisms underlying in vitro relaxation induced by Mikania laevigata Schultz Bip. ex Baker in the rat trachea. J Ethnopharmacol 2007; 112:430-9. [PMID: 17573215 DOI: 10.1016/j.jep.2007.03.026] [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] [Subscribe] [Scholar Register] [Received: 09/02/2006] [Revised: 03/17/2007] [Accepted: 03/24/2007] [Indexed: 05/15/2023]
Abstract
Mikania laevigata, popularly known in Brazil as "guaco", is largely used in folk medicine against respiratory diseases. However, neither the assessment of the toxicity of "guaco" syrup (GS, used by humans) nor its efficacy or mechanisms of action has been properly investigated. Using in vitro procedures, we showed that the hydroalcoholic extract (HE) from Mikania laevigata induces a concentration-dependent relaxation of rat trachea which does not depend on epithelium-derived substances but involves changes in the cellular mobilization of calcium, perhaps due to a direct effect on membrane potassium channels. In addition, we assessed both oral and intraperitoneal acute toxicity, as well as the oral subchronic and chronic toxicity of GS containing controlled amounts of coumarin, the main biological marker of Mikania laevigata preparations used in humans. The calculated LD(50) of GS after intraperitoneal administration was 0.904 g/kg in mice (both sexes) and 0.967 and 0.548 g/kg in male and female rats, respectively. However, the LD(50) values of GS by the oral route were calculated to be up to 10 g/kg, in both male and female mice and rats. Repeated dose 28- or 90-day oral treatment with GS (75, 150 and 300 mg/kg) did not produce any disturbances in the hematological or biochemical parameters of either male or female rats, nor did it provide evidence of toxicity in the hepatic, renal or pancreatic systems. Besides the mechanistic findings, our results provide evidence of the safety of Mikania laevigata in rodents, even after subchronic and chronic administration, at least in relation to the evaluated parameters.
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Affiliation(s)
- Carlos Graça
- Department of Pharmacy, Universidade Federal do Pará, Brazil
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