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Miorando D, Steffler AM, Vecchia CAD, Simomura VL, Veloso JJ, Buzatto MV, Nunes RKS, Somensi LB, Gutiérrez MV, Melim LISH, Pontes FMM, Silva LM, Veselinova A, González-Sánchez L, Jambrina PG, Junior WAR. Gastroprotective role of a flavonoid-rich subfraction from Fridericia chica (Bonpl.) L. G. Lohmann: a medicinal plant used in the Amazon region. Inflammopharmacology 2024:10.1007/s10787-024-01544-6. [PMID: 39126568 DOI: 10.1007/s10787-024-01544-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Accepted: 07/27/2024] [Indexed: 08/12/2024]
Abstract
Fridericia chica is an Amazonian plant used to treat stomach disorders. However, the pharmacological activity of flavonoids in the extract has yet to be investigated. Therefore, we considered that a flavonoid-rich F. chica subfraction (FRS) has gastroprotective functions. For this, before the induction of gastric ulcers with ethanol or piroxicam, the rats received vehicle (water), omeprazole (30 mg/kg), or FRS (30 mg/kg), and the ulcer area was measured macro and microscopically, and the antisecretory action was investigated in pylorus-ligated rats. In addition, the roles of nitric oxide (NO) and nonprotein sulfhydryl compounds (NP-SH) in the gastroprotective effects of FRS were studied. FRS reduced ethanol- and piroxicam-induced ulcerations by 81% and 77%, respectively, as confirmed histologically. Antioxidant effects were observed for FRS through the maintenance of GSH and LPO levels, and the SOD and CAT activity similar to those found in the nonulcerated group. Moreover, FRS avoided the increase in MPO activity and TNF, IL-6, IL-4 and IL-10 levels. Moreover, mucin staining increased in ulcerated rats receiving FRS, and the pharmacological mechanism gastroprotective seems to involve the NO and NP-SH in addition to antisecretory actions. The chemical study by mass spectrometry confirmed the presence of flavonoids in FRS, and molecular docking studies have shown that these compounds interact with cyclooxygenase-1 and NO synthase. Furthermore, there was no indication that FRS had cytotoxic effects. Our results support the popular use of F. chica, and we conclude that the gastroprotection effect promoted by FRS can be attributed to the combined effect of the flavonoids.
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Affiliation(s)
- Daniela Miorando
- Postgraduate Program in Health Sciences, Community University of Chapecó Region, Chapecó, SC, Brazil
| | - Amanda M Steffler
- Postgraduate Program in Health Sciences, Community University of Chapecó Region, Chapecó, SC, Brazil
| | - Cristian A Dalla Vecchia
- Postgraduate Program in Health Sciences, Community University of Chapecó Region, Chapecó, SC, Brazil
| | - Viviane L Simomura
- Postgraduate Program in Health Sciences, Community University of Chapecó Region, Chapecó, SC, Brazil
| | - Jaqueline J Veloso
- Laboratory of Pharmacognosy, Community University of the Chapecó Region, Chapecó, SC, Brazil
| | - Maike V Buzatto
- Laboratory of Pharmacognosy, Community University of the Chapecó Region, Chapecó, SC, Brazil
| | - Ruan K S Nunes
- Postgraduate Program in Pharmaceutical Sciences, University of Vale Do Itajaí, Itajaí, SC, Brazil
| | - Lincon B Somensi
- Postgraduate Program in Development and Society, University of Alto Vale Do Rio Do Peixe, Caçador, SC, Brazil
| | - Max V Gutiérrez
- Department of Chemical, Biological and Agricultural Sciences, Universidad de Sonora, Navojoa Sonora, Mexico
| | | | | | - Luisa M Silva
- Laboratory of TGI Pharmacology and Interactions, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Anzhela Veselinova
- Department of Physical Chemistry, Faculty of Chemical Sciences, University of Salamanca, Salamanca, Spain
| | - Lola González-Sánchez
- Department of Physical Chemistry, Faculty of Chemical Sciences, University of Salamanca, Salamanca, Spain
| | - Pablo G Jambrina
- Department of Physical Chemistry, Faculty of Chemical Sciences, University of Salamanca, Salamanca, Spain
| | - Walter A Roman Junior
- Postgraduate Program in Health Sciences, Community University of Chapecó Region, Chapecó, SC, Brazil.
- Laboratory of Pharmacognosy, Community University of the Chapecó Region, Chapecó, SC, Brazil.
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Abalenikhina YV, Erokhina PD, Mylnikov PY, Shchulkin AV, Yakusheva EN. Functioning of the P-glycoprotein Membrane Transport Protein under Conditions of the Inhibition of Glutathione Synthesis. APPL BIOCHEM MICRO+ 2022. [DOI: 10.1134/s0003683822030024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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A Novel Pathway Phenotype of Temporal Lobe Epilepsy and Comorbid Psychiatric Disorders: Results of Precision Nomothetic Medicine. Antioxidants (Basel) 2022; 11:antiox11050803. [PMID: 35624666 PMCID: PMC9137678 DOI: 10.3390/antiox11050803] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/13/2022] [Accepted: 04/13/2022] [Indexed: 02/01/2023] Open
Abstract
No precision medicine models of temporal lobe epilepsy (TLE) and associated mental comorbidities have been developed to date. This observational study aimed to develop a precision nomothetic, data-driven comorbid TLE model with endophenotype classes and pathway phenotypes that may have prognostic and therapeutical implications. We recruited forty healthy controls and 108 TLE patients for this research and assessed TLE and psychopathology (PP) features as well as oxidative stress (OSTOX, e.g., malondialdehyde or MDA, lipid hydroperoxides, and advanced oxidation protein products) and antioxidant (paraoxonase 1 or PON1 status, -SH groups, and total radical trapping potential or TRAP) biomarkers. A large part (57.2%) of the variance in a latent vector (LV) extracted from the above TLE and PP features was explained by these OSTOX and antioxidant biomarkers. The PON1 Q192R genetic variant showed indirect effects on this LV, which were completely mediated by PON1 activity and MDA. Factor analysis showed that a common core could be extracted from TLE, PP, OSTOX and antioxidant scores, indicating that these features are manifestations of a common underlying construct, i.e., a novel pathway phenotype of TLE. Based on the latter, we constructed a new phenotype class that is characterized by increased severity of TLE, PP and OSTOX features and lowered antioxidant defenses. A large part of the variance in episode frequency was explained by increased MDA, lowered antioxidant, and nitric oxide metabolite levels. In conclusion, (a) PP symptoms belong to the TLE phenome, and the signal increased severity; and (b) cumulative effects of aldehyde formation and lowered antioxidants determine epileptogenic kindling.
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Protective capacity of carotenoid trans-astaxanthin in rotenone-induced toxicity in Drosophila melanogaster. Sci Rep 2022; 12:4594. [PMID: 35301354 PMCID: PMC8931097 DOI: 10.1038/s41598-022-08409-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 03/07/2022] [Indexed: 01/23/2023] Open
Abstract
Trans-astaxanthin (TA), a keto-carotenoid found in aquatic invertebrates, possesses anti-oxidative and anti-inflammatory activities. Rotenone is used to induce oxidative stress-mediated Parkinson’s disease (PD) in animals. We probed if TA would protect against rotenone-induced toxicity in Drosophila melanogaster. Trans-astaxanthin (0, 0.1, 0.5, 1.0, 2.5, 10, and 20 mg/10 g diet) and rotenone (0, 250 and 500 μM) were separately orally exposed to flies in the diet to evaluate longevity and survival rates, respectively. Consequently, we evaluated the ameliorative actions of TA (1.0 mg/10 g diet) on rotenone (500 μM)-induced toxicity in Drosophila after 7 days’ exposure. Additionally, we performed molecular docking of TA against selected pro-inflammatory protein targets. We observed that TA (0.5 and 1.0 mg/10 g diet) increased the lifespan of D. melanogaster by 36.36%. Moreover, TA (1.0 mg/10 g diet) ameliorated rotenone-mediated inhibition of Catalase, Glutathione-S-transferase and Acetylcholinesterase activities, and depletion of Total Thiols and Non-Protein Thiols contents. Trans-astaxanthin prevented behavioural dysfunction and accumulation of Hydrogen Peroxide, Malondialdehyde, Protein Carbonyls and Nitric Oxide in D. melanogaster (p < 0.05). Trans-astaxanthin showed higher docking scores against the pro-inflammatory protein targets evaluated than the standard inhibitors. Conclusively, the structural features of TA might have contributed to its protective actions against rotenone-induced toxicity.
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De Araújo ERD, Guerra GCB, Andrade AWL, Fernandes JM, Da Silva VC, De Aragão Tavares E, De Araújo AA, de Araújo Júnior RF, Zucolotto SM. Gastric Ulcer Healing Property of Bryophyllum pinnatum Leaf Extract in Chronic Model In Vivo and Gastroprotective Activity of Its Major Flavonoid. Front Pharmacol 2021; 12:744192. [PMID: 34975468 PMCID: PMC8717929 DOI: 10.3389/fphar.2021.744192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 11/10/2021] [Indexed: 11/13/2022] Open
Abstract
Gastric ulcer is a common disease that develops complications such as hemorrhages and perforations when not properly treated. Extended use of drugs in the treatment of this pathology can provoke many adverse effects. Therefore, finding medicinal plants with gastroprotective and mucosal healing properties has gained increasing interest. Bryophyllum pinnatum (Crassulaceae), popularly known in Brazil as “saião” or “coirama,” has been used to treat inflammatory disorders. It is rich in flavonoids, and quercetin 3-O-α-L-arabinopyranosyl-(1→2)-O-α-L-rhamnopyranoside-Bp1 is its major compound. In this study, we aimed to investigate ulcer healing properties of B. pinnatum against an acetic acid–induced chronic ulcer model and the gastroprotective activity of Bp1 against gastric lesions induced by ethanol and indomethacin. Ultrafast liquid chromatography was used to quantify the main compounds (mg/g of the extract)—quercetin 3-O-α-L-arabinopyranosyl-(1→2)-O-α-L-rhamnopyranoside (33.12 ± 0.056), kaempferol 3-O-α-L-arabinopyranosyl-(1→2)-O-α-L-rhamnopyranoside (3.98 ± 0.049), and quercetin 3-O-α-L-rhamnopyranoside (4.26 ± 0.022) and showed good linearity, specificity, selectivity, precision, robustness, and accuracy. In vivo studies showed that treatment with the extract at 250 and 500 mg/kg stimulated the healing process in the gastric mucosa with significant ulceration index reduction, followed by improvement in the antioxidant defense system [increased glutathione (GSH) levels, decreased superoxide dismutase upregulation, and malondialdehyde (MDA) levels]. Moreover, the extract decreased interleukin-1β and tumor necrosis factor-a levels and myeloperoxidase (MPO) activity, increased interleukin 10 levels, showed a cytoprotective effect in histological analyzes and also downregulated the expression of cyclooxygenase-2 and NF-κB (p65). The pretreatment with Bp1 at a dose of 5 mg/kg reduced gastric lesions in the ethanol and indomethacin models, increased GSH, and decreased MDA levels. In addition, the pretreatment decreased MPO activity, interleukin-1β and tumor necrosis factor-α levels, while also showing a cytoprotective effect in histological analyzes. Our study suggests that treatment with B. pinnatum extract showed a higher inhibition percentage than pretreatment with the Bp1. This might in turn suggest that Bp1 has gastroprotective activity, but other compounds can act synergistically, potentiating its effect. We conclude that B. pinnatum leaf extract could be a new source of raw material rich in phenolic compounds to be applied in food or medicine.
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Affiliation(s)
| | | | - Anderson Wilbur Lopes Andrade
- Postgraduate Program in Drug Development and Technological Innovation, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Júlia Morais Fernandes
- Postgraduate Program in Pharmaceutical Science, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil
| | - Valéria Costa Da Silva
- Postgraduate Program in Drug Development and Technological Innovation, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Emanuella De Aragão Tavares
- Postgraduate Program in Drug Development and Technological Innovation, Federal University of Rio Grande do Norte, Natal, Brazil
| | | | - Raimundo Fernandes de Araújo Júnior
- Postgraduate Program in Health Science, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil
- Postgraduate Program in Functional and Structural Biology, Department of Morphology, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil
- Translational Nanobiomaterials and Imaging (TNI) Group, Radiology Department, Leiden University Medical Centrum, Leiden, Netherlands
- Percuros B.V, Leiden, Netherlands
| | - Silvana Maria Zucolotto
- Postgraduate Program in Health Science, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil
- Postgraduate Program in Drug Development and Technological Innovation, Federal University of Rio Grande do Norte, Natal, Brazil
- Postgraduate Program in Pharmaceutical Science, Federal University of Rio Grande do Norte (UFRN), Natal, Brazil
- *Correspondence: Silvana Maria Zucolotto,
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do Nascimento RF, de Oliveira Formiga R, Machado FDF, de Sales IRP, de Lima GM, Alves Júnior EB, Vieira GC, Pereira RF, de Araújo AA, de Araújo Junior RF, Barbosa Filho JM, Batista LM. Rosmarinic acid prevents gastric ulcers via sulfhydryl groups reinforcement, antioxidant and immunomodulatory effects. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2020; 393:2265-2278. [PMID: 32642876 DOI: 10.1007/s00210-020-01894-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 05/01/2020] [Indexed: 02/08/2023]
Abstract
Rosmarinic acid (RA) is a secondary metabolite present in several plant species that has already demonstrated antioxidant, antiallergic, anticancer, antimicrobial, neuroprotective, and hepatoprotective effects experimentally. Due to the promising pharmacological properties found previously, this study aimed to assess the oral acute toxicity and the gastroprotective effect of RA using animal models. Acute toxicity was assessed according to OECD guide 423. Ethanol, stress, NSAIDs, and pylorus ligature-induced gastric ulcer models were used to investigate antiulcer properties. The related mechanisms of action were also evaluated from ethanol-induced gastric lesions protocol. RA (300 and 2000 mg/kg) showed no changes in behavioral, water and food intake, body and organs weight parameters with LD50 set around 2500 mg/kg. RA presented gastroprotective activity in all assessed doses (25, 50, 100, and 200 mg/kg) using different animal models. Besides, it was observed that this effect is not related to the modulation of gastric juice parameters (pH, volume, and [H+]), the participation of nitric oxide, mucus, and prostaglandins. However, increased sulfhydryl groups, GSH and IL-10 levels as well as reduced of proinflammatory cytokine (TNF-α and IL-1β) levels were found for RA-treated groups. RA presents low acute toxicity and gastroprotective activity, preventing ulcer formation via cytoprotective, antioxidant, and anti-inflammatory mechanisms. Graphical abstract.
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Affiliation(s)
- Raphaela Francelino do Nascimento
- Natural and Synthetic Bioactive Products Postgraduate Program, Health Sciences Center, Federal University of Paraiba, Paraíba, João Pessoa, PB, Brazil
| | - Rodrigo de Oliveira Formiga
- Natural and Synthetic Bioactive Products Postgraduate Program, Health Sciences Center, Federal University of Paraiba, Paraíba, João Pessoa, PB, Brazil
| | - Flávia Danielle Frota Machado
- Natural and Synthetic Bioactive Products Postgraduate Program, Health Sciences Center, Federal University of Paraiba, Paraíba, João Pessoa, PB, Brazil
| | - Igor Rafael Praxedes de Sales
- Natural and Synthetic Bioactive Products Postgraduate Program, Health Sciences Center, Federal University of Paraiba, Paraíba, João Pessoa, PB, Brazil
| | - Gedson Moraes de Lima
- Natural and Synthetic Bioactive Products Postgraduate Program, Health Sciences Center, Federal University of Paraiba, Paraíba, João Pessoa, PB, Brazil
| | - Edvaldo Balbino Alves Júnior
- Natural and Synthetic Bioactive Products Postgraduate Program, Health Sciences Center, Federal University of Paraiba, Paraíba, João Pessoa, PB, Brazil
| | - Giciane Carvalho Vieira
- Natural and Synthetic Bioactive Products Postgraduate Program, Health Sciences Center, Federal University of Paraiba, Paraíba, João Pessoa, PB, Brazil
| | - Raquel Fragoso Pereira
- Natural and Synthetic Bioactive Products Postgraduate Program, Health Sciences Center, Federal University of Paraiba, Paraíba, João Pessoa, PB, Brazil
| | - Aurigena Antunes de Araújo
- Department of Biophysics and Pharmacology and Department of Morphology, Histology and Basic Pathology, Bioscience Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Raimundo Fernandes de Araújo Junior
- Department of Biophysics and Pharmacology and Department of Morphology, Histology and Basic Pathology, Bioscience Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - José Maria Barbosa Filho
- Natural and Synthetic Bioactive Products Postgraduate Program, Health Sciences Center, Federal University of Paraiba, Paraíba, João Pessoa, PB, Brazil
| | - Leônia Maria Batista
- Natural and Synthetic Bioactive Products Postgraduate Program, Health Sciences Center, Federal University of Paraiba, Paraíba, João Pessoa, PB, Brazil.
- Department of Pharmaceutical Sciences, IPeFarM, Federal University of Paraíba, João Pessoa, PB, 58051-970, Brazil.
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Gastric healing effect of p-coumaric acid isolated from Baccharis dracunculifolia DC on animal model. Naunyn Schmiedebergs Arch Pharmacol 2020; 394:49-57. [PMID: 32780226 DOI: 10.1007/s00210-020-01928-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 06/18/2020] [Indexed: 02/07/2023]
Abstract
The p-coumaric acid is a phenolic compound present in large quantities in the extract of Baccharis dracunculifolia DC, a Brazilian medicinal plant used to treat gastric ulcer. Given the necessity for finding new chemical components capable of accelerating gastric healing, in this study, the effects of the p-coumaric acid were evaluated in the acetic acid-induced ulcer model in rats, where histological, inflammatory, and oxidative parameters were analyzed. The healing property was also evaluated in the scratch assay on fibroblast cells (L929) and the cytotoxicity of p-coumaric acid was assessed in both L929 and human gastric adenocarcinoma (AGS) cells by MTT assay. The treatment with p-coumaric acid (10 mg/kg, p.o.) for 7 days, twice a day, decreased by 44.6% the acetic acid-induced gastric ulcer compared with the vehicle-treated group. The vehicle control-treated group showed a larger extension of the ulcer base and an extensive damage into the mucosa and submucosa layers, which were mitigated by the treatment with p-coumaric acid. This beneficial effect was also associated with increased levels of mucin and reduced glutathione, decreased amount of lipid hydroperoxides, and increased superoxide dismutase and catalase activities without interfering with the activity of myeloperoxidase in the gastric tissue. The compound promoted the restructuring of the cell monolayer in the scratch test and did not show toxicity in the L929 cell line, while reduced the viability of the AGS, a lineage of human gastric adenocarcinoma. Thus, p-coumaric acid may be considered a natural source for the treatment of gastric ulcers, by reinforcing protective factors of gastric mucosa and by accelerating gastric healing.
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Boeing T, Mariano LNB, Dos Santos AC, Tolentino B, Vargas AC, de Souza P, Nesello LAN, da Silva LM. Gastroprotective effect of the alkaloid boldine: Involvement of non-protein sulfhydryl groups, prostanoids and reduction on oxidative stress. Chem Biol Interact 2020; 327:109166. [PMID: 32531310 DOI: 10.1016/j.cbi.2020.109166] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/12/2020] [Accepted: 06/05/2020] [Indexed: 01/16/2023]
Abstract
Boldine is the main alkaloid of Peumus boldus Molina, widely used in the traditional medicine for the treatment of digestive disorders. It is a compound with excellent antioxidant and anti-inflammatory properties already described. Despite the widespread use of P. boldus for digestive disorders treatment, the gastroprotective effect of Boldine remains unknown. Considering the need for new approaches to treat gastric ulcers with fewer side effects than current therapy, this study aimed to investigate the gastroprotective effect of Boldine in mice, as well as the mechanisms underlying this effect. The gastroprotective effect of Boldine was evaluated on gastric ulcer induced by 60% ethanol/0.3 M HCl or indomethacin (100 mg/kg) in mice. Histological analysis and the mucin-like glycoprotein content were evaluated in ethanol-ulcerated tissue, as well as, oxidative stress and inflammatory parameters. The mechanisms involved in the effect of Boldine were evaluated by pretreating mice with NEM (a sulfhydryl group chelator, 10 mg/kg, i.p.), l-NAME (a non-selective nitric oxide synthase inhibitor, 70 mg/kg, i.p.), yohimbine (an alpha-adrenergic receptor antagonist, 2 mg/kg, i.p.) and indomethacin (a cyclooxygenase inhibitor, 10 mg/kg, i.p.). In addition, the in vitro effect of Boldine on H+/K+-ATPase activity was determined. Boldine was able to protect gastric mucosa against the damage induced by ethanol/HCl and indomethacin, as evidenced by reduced lesion area and histological analysis. Moreover, the alkaloid reduced oxidative stress and inflammatory mediators in ethanol-ulcerated tissue, beyond has increased mucin-like glycoprotein amount. Finally, Boldine effect is dependent on non-protein sulfhydryl groups and prostanoids but does not involve the inhibition of H+/K + -ATPase activity, being a promising natural resource for gastric ulcer treatment.
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Affiliation(s)
- Thaise Boeing
- Postgraduate Program in Pharmaceutical Sciences (PPGCF), Nucleus of Chemical-Pharmaceutical Investigations (NIQFAR), University of Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil.
| | - Luisa Natália Bolda Mariano
- Postgraduate Program in Pharmaceutical Sciences (PPGCF), Nucleus of Chemical-Pharmaceutical Investigations (NIQFAR), University of Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
| | - Ana Caroline Dos Santos
- Postgraduate Program in Pharmaceutical Sciences (PPGCF), Nucleus of Chemical-Pharmaceutical Investigations (NIQFAR), University of Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
| | - Bianca Tolentino
- Postgraduate Program in Pharmaceutical Sciences (PPGCF), Nucleus of Chemical-Pharmaceutical Investigations (NIQFAR), University of Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
| | - Angela Cadorin Vargas
- Postgraduate Program in Pharmaceutical Sciences (PPGCF), Nucleus of Chemical-Pharmaceutical Investigations (NIQFAR), University of Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
| | - Priscila de Souza
- Postgraduate Program in Pharmaceutical Sciences (PPGCF), Nucleus of Chemical-Pharmaceutical Investigations (NIQFAR), University of Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
| | - Luciane Angela Nottar Nesello
- Postgraduate Program in Pharmaceutical Sciences (PPGCF), Nucleus of Chemical-Pharmaceutical Investigations (NIQFAR), University of Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
| | - Luísa Mota da Silva
- Postgraduate Program in Pharmaceutical Sciences (PPGCF), Nucleus of Chemical-Pharmaceutical Investigations (NIQFAR), University of Vale do Itajaí (UNIVALI), Itajaí, SC, Brazil
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De Sales IRP, Formiga RDO, Machado FDF, Nascimento RF, Pessoa MMB, Barros MEFX, Vieira GC, Gadelha FAAF, Marinho AF, Barbosa Filho JM, Júnior RFDA, Antunes AA, Batista LM. Cytoprotective, antioxidant and anti-inflammatory mechanism related to antiulcer activity of Cissampelos sympodialis Eichl. in animal models. JOURNAL OF ETHNOPHARMACOLOGY 2018; 222:190-200. [PMID: 29704592 DOI: 10.1016/j.jep.2018.04.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 04/03/2018] [Accepted: 04/12/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The leaves and roots of Cissampelos sympodialis (Menispermaceae) are used by indian tribes and in folk medicine to treat genitourinary infections, inflammation, asthma and gastrointestinal disorders. MATERIAL AND METHODS The standardized ethanolic extract (Cs-EtOHE) and alkaloids total fraction (Cs-TAF) obtained from aerial parts of C. sympodialis were evaluated in several models of acute gastric ulcers. The antisecretory and/or neutralizing mechanisms of the gastric acid secretion, cytoprotective, antioxidant and immunoregulatory mechanisms were also evaluated. RESULTS Cs-EtOHE and Cs-TAF presented a reduction in gastric mucosa lesions against ethanol, NSAIDs, hypothermic restraint-stress and gastric juice containment induced ulcer models. This activity is related to alkaloids present in the extract, and involves the participation of sulfhydryl compounds, nitric oxide, KATP channels, prostaglandins, decreased levels of IL-1β and TNF-α and increased levels of GSH and IL-10. CONCLUSION The data indicate gastroprotective activity, due to the participation of the cytoprotective, antioxidant and immunoregulatory mechanisms.
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Affiliation(s)
- Igor Rafael Praxedes De Sales
- Postgraduate Program in Natural and Synthetic Bioactive Products, Health Sciences Center, Universidade Federal da Paraíba (UFPB), João Pessoa 58051-970, PB, Brazil.
| | - Rodrigo De Oliveira Formiga
- Postgraduate Program in Natural and Synthetic Bioactive Products, Health Sciences Center, Universidade Federal da Paraíba (UFPB), João Pessoa 58051-970, PB, Brazil.
| | - Flávia Danniele Frota Machado
- Postgraduate Program in Natural and Synthetic Bioactive Products, Health Sciences Center, Universidade Federal da Paraíba (UFPB), João Pessoa 58051-970, PB, Brazil.
| | - Raphaela Francelino Nascimento
- Postgraduate Program in Natural and Synthetic Bioactive Products, Health Sciences Center, Universidade Federal da Paraíba (UFPB), João Pessoa 58051-970, PB, Brazil.
| | - Matheus Marley Bezerra Pessoa
- Postgraduate Program in Natural and Synthetic Bioactive Products, Health Sciences Center, Universidade Federal da Paraíba (UFPB), João Pessoa 58051-970, PB, Brazil.
| | - Monique Emanuela Frutuoso Xavier Barros
- Postgraduate Program in Natural and Synthetic Bioactive Products, Health Sciences Center, Universidade Federal da Paraíba (UFPB), João Pessoa 58051-970, PB, Brazil.
| | - Giciane Carvalho Vieira
- Postgraduate Program in Natural and Synthetic Bioactive Products, Health Sciences Center, Universidade Federal da Paraíba (UFPB), João Pessoa 58051-970, PB, Brazil.
| | - Francisco Allysson Assis Ferreira Gadelha
- Postgraduate Program in Natural and Synthetic Bioactive Products, Health Sciences Center, Universidade Federal da Paraíba (UFPB), João Pessoa 58051-970, PB, Brazil.
| | - Alexsandro Fernandes Marinho
- Postgraduate Program in Natural and Synthetic Bioactive Products, Health Sciences Center, Universidade Federal da Paraíba (UFPB), João Pessoa 58051-970, PB, Brazil.
| | - José Maria Barbosa Filho
- Postgraduate Program in Natural and Synthetic Bioactive Products, Health Sciences Center, Universidade Federal da Paraíba (UFPB), João Pessoa 58051-970, PB, Brazil.
| | - Raimundo Fernandes De Araújo Júnior
- Department of Biophysics and Pharmacology and Department of Morphology, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brazil.
| | - Aurigena Araújo Antunes
- Department of Biophysics and Pharmacology and Department of Morphology, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brazil.
| | - Leônia Maria Batista
- Postgraduate Program in Natural and Synthetic Bioactive Products, Health Sciences Center, Universidade Federal da Paraíba (UFPB), João Pessoa 58051-970, PB, Brazil.
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10
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Silano V, Bolognesi C, Castle L, Chipman K, Cravedi JP, Engel KH, Fowler P, Franz R, Grob K, Gürtler R, Husøy T, Kärenlampi S, Milana MR, Pfaff K, Riviere G, Srinivasan J, Tavares Poças MDF, Tlustos C, Wölfle D, Zorn H, Benigni R, Binderup ML, Brimer L, Marcon F, Marzin D, Mosesso P, Mulder G, Oskarsson A, Svendsen C, Anastassiadou M, Carfì M, Saarma S, Mennes W. Safety of ethyl acrylate to be used as flavouring. EFSA J 2017; 15:e05012. [PMID: 32625331 PMCID: PMC7010172 DOI: 10.2903/j.efsa.2017.5012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF Panel) was requested by the European Commission according to Art. 29 1(a) of the Regulation (EC) No 178/2002 to carry out a review of existing literature on the safety of ethyl acrylate [FL-no: 09.037] when used as a flavouring substance. Ethyl acrylate [FL-no: 09.037] was evaluated in 2010 by EFSA in FGE.71 as a flavouring substance, based on the 2006 JECFA evaluation. The Panel concluded that ethyl acrylate was of no safety concern at estimated level of intake as flavouring substance based on the Maximised Survey-Derived Daily Intake (MSDI) approach. The Panel has evaluated the new literature available and any previous assessments performed by JECFA (2006) and EFSA (2010). Moreover, new data on the use levels of ethyl acrylate as flavouring substance have been provided. For use as flavouring substance, the chronic dietary exposure estimated using the added portions exposure technique (APET), is calculated to be 3,545 μg/person per day for a 60-kg adult and 2,233 μg/person per day for a 15-kg 3-year-old child. Exposure from food contact materials may be up to 6,000 μg/person per day. The Panel considered that based on the available data, which covers all relevant genetic endpoints (i.e. gene mutations, structural and numerical chromosomal aberrations) there is no concern with respect to genotoxicity of ethyl acrylate. The Panel evaluated the available carcinogenicity studies conducted in rats and mice and agreed with the NTP evaluation (1998) concluding that the forestomach squamous cell papilloma and carcinoma observed in rodents were not relevant to humans. Additionally, there was no evidence of systemic toxicity in short-term and subchronic toxicity studies. Therefore, the Panel concluded that there is no safety concern for the use of ethyl acrylate as a flavouring substance, under the intended conditions of use.
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Gain S, Das RS, Banerjee R, Mukhopadhyay S. Kinetics and mechanism of oxidation of thiourea by a bridging superoxide in the presence of Ellman’s reagent. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1206198] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Sekhar Gain
- Department of Chemistry, Ramakrishna Mission Vidyamandira, Howrah, India
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12
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Mcgill MR, Jaeschke H. A direct comparison of methods used to measure oxidized glutathione in biological samples: 2-vinylpyridine and N-ethylmaleimide. Toxicol Mech Methods 2015; 25:589-95. [PMID: 26461121 DOI: 10.3109/15376516.2015.1094844] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The ratio of glutathione disulfide (GSSG) to reduced glutathione (GSH) in biological samples is a frequently used parameter of oxidative stress. As a result, many methods are developed to measure GSSG. The most popular and convenient of these relies on enzymatic cycling following the chemical masking of GSH in the sample using 2-vinylpyridine (2VP). However, 2VP is a slow reactant and its use may result in artificially high GSSG values due to oxidation of the sample over time. Fast-reacting reagents such as N-ethylmaleimide (NEM) may provide more accurate results. We performed a direct comparison of methods using 2VP and NEM. With 2VP, the percentage of total glutathione (GSH+GSSG) in the oxidized form was significantly higher in all tested tissues (kidney, lung and liver) compared to the same procedure performed using NEM. We conclude that NEM, when coupled with a simple solid-phase extraction procedure, is more accurate for the determination of GSSG. We also tested the effects of various handling and storage conditions on GSSG. A detailed description and a discussion of other methods are also included.
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Affiliation(s)
- Mitchell R Mcgill
- a Department of Pharmacology , Toxicology and Therapeutics, University of Kansas Medical Center , Kansas City , KS , USA
| | - Hartmut Jaeschke
- a Department of Pharmacology , Toxicology and Therapeutics, University of Kansas Medical Center , Kansas City , KS , USA
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13
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Cian RE, Drago SR, de Medina FS, Martínez-Augustin O. Proteins and Carbohydrates from Red Seaweeds: Evidence for Beneficial Effects on Gut Function and Microbiota. Mar Drugs 2015; 13:5358-83. [PMID: 26308006 PMCID: PMC4557026 DOI: 10.3390/md13085358] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/22/2015] [Accepted: 08/04/2015] [Indexed: 12/12/2022] Open
Abstract
Based on their composition, marine algae, and namely red seaweeds, are good potential functional foods. Intestinal mucosal barrier function refers to the capacity of the intestine to provide adequate containment of luminal microorganisms and molecules. Here, we will first outline the component of seaweeds and will summarize the effects of these on the regulation of mucosal barrier function. Special attention will be paid to unique components of red seaweeds: proteins and derived peptides (e.g., phycobiliproteins, glycoproteins that contain “cellulose binding domains”, phycolectins and the related mycosporine-like amino acids) together with polysaccharides (e.g., floridean starch and sulfated galactans, such as carrageenans, agarans and “dl-hybrid”) and minerals. These compounds have been shown to exert prebiotic effects, to regulate intestinal epithelial cell, macrophage and lymphocyte proliferation and differentiation and to modulate the immune response. Molecular mechanisms of action of peptides and polysaccharides are starting to be elucidated, and evidence indicating the involvement of epidermal growth factor receptor (EGFR), insulin-like growth factor receptor (IGFR), Toll-like receptors (TLR) and signal transduction pathways mediated by protein kinase B (PKB or AKT), nuclear factor-κB (NF-κB) and mitogen activated protein kinases (MAPK) will also be summarized. The need for further research is clear, but in vivo experiments point to an overall antiinflammatory effect of these algae, indicating that they can reinforce membrane barrier function.
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Affiliation(s)
- Raúl E Cian
- Instituto de Tecnología de Alimentos, Facultad de Ingeniería Química, Universidad Nacional del Litoral, 1° de Mayo 3250, (3000) Santa Fe, República Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917 (C1033AAJ), Ciudad Autónoma de Buenos Aires, República Argentina.
| | - Silvina R Drago
- Instituto de Tecnología de Alimentos, Facultad de Ingeniería Química, Universidad Nacional del Litoral, 1° de Mayo 3250, (3000) Santa Fe, República Argentina.
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917 (C1033AAJ), Ciudad Autónoma de Buenos Aires, República Argentina.
| | - Fermín Sánchez de Medina
- Department of Pharmacology, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Universidad de Granada, Campus de Cartuja s/n, 18071 Granada, Spain.
- Instituto de Ciencia y Tecnología de los Alimentos José Mataix, Universidad de Granada, 18071 Granada, Spain.
| | - Olga Martínez-Augustin
- Instituto de Ciencia y Tecnología de los Alimentos José Mataix, Universidad de Granada, 18071 Granada, Spain.
- Department of Biochemistry and Molecular Biology II, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Universidad de Granada, Campus de Cartuja s/n, 18071 Granada, Spain.
- Instituto de Investigación Biosanitaria. ibs. GRANADA, University of Granada, 18071 Granada, Spain.
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14
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Santiago RF, de Brito TV, Dias JM, Dias GJ, da Cruz JS, Batista JA, Silva RO, Souza MHLP, de Albuquerque Ribeiro R, Gutierrez SJC, Freitas RM, Medeiros JVR, dos Reis Barbosa AL. Riparin B, a Synthetic Compound Analogue of Riparin, Inhibits the Systemic Inflammatory Response and Oxidative Stress in Mice. Inflammation 2015; 38:2203-15. [DOI: 10.1007/s10753-015-0203-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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15
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Arab HH, Salama SA, Omar HA, Arafa ESA, Maghrabi IA. Diosmin protects against ethanol-induced gastric injury in rats: novel anti-ulcer actions. PLoS One 2015; 10:e0122417. [PMID: 25821971 PMCID: PMC4378914 DOI: 10.1371/journal.pone.0122417] [Citation(s) in RCA: 163] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 02/20/2015] [Indexed: 01/26/2023] Open
Abstract
Alcohol consumption has been commonly associated with gastric mucosal lesions including gastric ulcer. Diosmin (DIO) is a natural citrus flavone with remarkable antioxidant and anti-inflammatory features that underlay its protection against cardiac, hepatic and renal injuries. However, its impact on gastric ulcer has not yet been elucidated. Thus, the current study aimed to investigate the potential protective effects of DIO against ethanol-induced gastric injury in rats. Pretreatment with DIO (100 mg/kg p.o.) attenuated the severity of ethanol gastric mucosal damage as evidenced by lowering of ulcer index (UI) scores, area of gastric lesions, histopathologic aberrations and leukocyte invasion. These actions were analogous to those exerted by the reference antiulcer sucralfate. DIO suppressed gastric inflammation by curbing of myeloperoxidase (MPO) and tumor necrosis factor-α (TNF-α) levels along with nuclear factor kappa B (NF-κB) p65 expression. It also augmented the anti-inflammatory interleukin-10 (IL-10) levels. Meanwhile, DIO halted gastric oxidative stress via inhibition of lipid peroxides with concomitant enhancement of glutathione (GSH), glutathione peroxidase (GPx) and the total antioxidant capacity (TAC). With respect to gastric mucosal apoptosis, DIO suppressed caspase-3 activity and cytochrome C (Cyt C) with enhancement of the anti-apoptotic B cell lymphoma-2 (Bcl-2) in favor of cell survival. These favorable actions were associated with upregulation of the gastric cytoprotective prostaglandin E2 (PGE2) and nitric oxide (NO). Together, these findings accentuate the gastroprotective actions of DIO in ethanol gastric injury which were mediated via concerted multi-pronged actions, including suppression of gastric inflammation, oxidative stress and apoptosis besides boosting of the antioxidant and the cytoprotective defenses.
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Affiliation(s)
- Hany H. Arab
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
- Biochemistry Division and GTMR Unit, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Taif University, Taif, 21974, Saudi Arabia
- * E-mail:
| | - Samir A. Salama
- Biochemistry Division and GTMR Unit, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Taif University, Taif, 21974, Saudi Arabia
- Department of Biochemistry, Faculty of Pharmacy, Al-Azhar University, Cairo, 11751, Egypt
| | - Hany A. Omar
- Department of Pharmacology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514, Egypt
- Sharjah Institute for Medical Research, College of Pharmacy, University of Sharjah, Sharjah, 27272, United Arab of Emirates
| | - El-Shaimaa A. Arafa
- Department of Pharmacology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62514, Egypt
| | - Ibrahim A. Maghrabi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Taif University, Taif, 21974, Saudi Arabia
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Taketani Y, Kinugasa K, Kitajima R, Nishiumi S, Ashida H, Nakamura H, Fujita T, Kanzaki K, Masutani H, Yodoi J. Protective effects of oral administration of yeast thioredoxin against gastric mucosal injury. Biosci Biotechnol Biochem 2014; 78:1221-30. [PMID: 25229862 DOI: 10.1080/09168451.2014.915733] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Thioredoxin (TRX) is a redox regulating protein which has protective effects against oxidative stress-induced damage to cells and tissues. In this study, we investigated the effects of orally administered TRX derived from edible yeast, Saccharomyces cerevisiae, on gastric mucosa. First, we examined the digestibility of orally administered yeast TRX in mice, and detected yeast TRX in the stomach for 4 h after administration. Next, we investigated the mitigation of gastric mucosal injury after the oral administration of yeast TRX in water-immersion restraint stress and HCl/ethanol-induced gastric ulcer models. Furthermore, we conducted DNA microarray analysis, using the HCl/ethanol-induced model, which revealed that several groups of genes related to tissue repair were upregulated in ulcer regions in the stomachs of rats administered with yeast TRX. These results demonstrated the viability of the use of oral administrations of yeast TRX to protect the gastric mucosa.
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Affiliation(s)
- Yukiko Taketani
- a Nagahama Institute for Biochemical Science, Oriental Yeast Co., Ltd. , Nagahama , Japan
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17
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Song DU, Jang MS, Kim HW, Yoon HJ, Chay KO, Joo YE, Jung YD, Yang SY, Ahn BW. Gastroprotective Effects of Glutinous Rice Extract against Ethanol-, Indomethacin-, and Stress-induced Ulcers in Rats. Chonnam Med J 2014; 50:6-14. [PMID: 24855601 PMCID: PMC4022797 DOI: 10.4068/cmj.2014.50.1.6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 01/27/2014] [Accepted: 01/28/2014] [Indexed: 12/12/2022] Open
Abstract
This study was designed to evaluate the efficacy of an orally administered aqueous extract of glutinous rice (GRE) to protect against acute gastric mucosal lesions induced by ethanol, indomethacin, and water immersion restraint stress in rats and to characterize the active substances responsible for the protection. GRE was shown to dose-dependently prevent the gastric lesions induced by the above ulcerogenic treatments at doses of 30 to 300 mg/kg. GRE treatment increased the gastric mucin content and partially blocked the ethanol-induced depletion of the gastric mucus layer. Also, it increased the nonprotein sulfhydryl concentration in the gastric mucosa. The gastroprotective action of GRE was markedly enhanced by co-treatment with 4-8 mg/kg tea extracts. The activity of GRE was completely lost by heat treatment at 80℃ for 3 min or treatment with 0.01% pepsin at 37℃ for 1 h. Protein extraction studies indicated that prolamins are involved in the gastroprotective activity of GRE. Our results suggest that glutinous rice proteins are useful for the prevention and treatment of gastritis and peptic ulcer.
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Affiliation(s)
- Dong Up Song
- Chonnam University Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, Korea
| | - Mi Sun Jang
- Chonnam University Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, Korea
| | - Hyun Woo Kim
- Chonnam University Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju, Korea
| | - Hyun Joong Yoon
- Department of Biochemistry, Chonnam National University Medical School, Gwangju, Korea
| | - Kee Oh Chay
- Department of Biochemistry, Chonnam National University Medical School, Gwangju, Korea
| | - Young Eun Joo
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Young Do Jung
- Department of Biochemistry, Chonnam National University Medical School, Gwangju, Korea
| | - Sung Yeul Yang
- Department of Biochemistry, Chonnam National University Medical School, Gwangju, Korea
| | - Bong Whan Ahn
- Department of Biochemistry, Chonnam National University Medical School, Gwangju, Korea
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Batista LM, de Almeida ABA, de Morais Lima GR, de Sousa Falcão H, de Pietro Magri L, Luiz-Ferreira A, dos Santos LC, Hiruma-Lima CA, Vilegas W, Souza Brito ARM. Gastroprotective effects (in rodents) of a flavonoid rich fraction obtained from Syngonanthus macrolepsis. J Pharm Pharmacol 2013; 66:445-52. [DOI: 10.1111/jphp.12175] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Accepted: 10/10/2013] [Indexed: 02/06/2023]
Abstract
Abstract
Objectives
Syngonanthus macrolepis, popularly known in Brazil as ‘sempre-vivas’, is a plant from the family Eriocaulaceae, it is found in the states of Minas Gerais and Bahia. The species contains a variety of constituents, including flavonoids with gastroprotective effect. In this work, a flavonoid-rich fraction (Sm-FRF) obtained from scapes of S. macrolepis was investigated for preventing gastric ulceration in mice and rats.
Methods
The activity was evaluated in models of induced gastric ulcer (absolute ethanol, stress, non-steroidal anti-inflammatory drugs and pylorus ligation). The cytoprotective mechanisms of the Sm-FRF in relation to sulfhydryl (SH) groups, nitric oxide (NO) and antioxidant enzymes were also evaluated.
Key findings
The Sm-FRF (100 mg/kg, p.o.) significantly reduced gastric injury in all models, and did not alter gastric juice parameters after pylorus ligation.
Conclusions
The results indicate significant gastroprotective activity for the Sm-FRF, which probably involves the participation of both SH groups and the antioxidant system. Both are integral parts of the gastrointestinal mucosa's cytoprotective mechanisms against aggressive factors.
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Affiliation(s)
- Leônia Maria Batista
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Laboratório de Farmacologia do Trato Gastrintestinal, Universidade Federal da Paraíba (UFPB), João Pessoa, PB, Brazil
- Departamento de Fisiologia e Biofísica, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Ana Beatriz Albino de Almeida
- Departamento de Fisiologia e Biofísica, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Gedson Rodrigues de Morais Lima
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Laboratório de Farmacologia do Trato Gastrintestinal, Universidade Federal da Paraíba (UFPB), João Pessoa, PB, Brazil
| | - Heloina de Sousa Falcão
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Laboratório de Farmacologia do Trato Gastrintestinal, Universidade Federal da Paraíba (UFPB), João Pessoa, PB, Brazil
| | - Luciana de Pietro Magri
- Departamento de Fisiologia e Biofísica, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Anderson Luiz-Ferreira
- Departamento de Fisiologia e Biofísica, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
| | - Lourdes Campaner dos Santos
- Departamento de Química Orgânica, Instituto de Química, Universidade Estadual Paulista (UNESP), Araraquara, SP, Brazil
| | - Clélia Akiko Hiruma-Lima
- Departamento de Fisiologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brazil
| | - Wagner Vilegas
- Departamento de Química Orgânica, Instituto de Química, Universidade Estadual Paulista (UNESP), Araraquara, SP, Brazil
| | - Alba Regina Monteiro Souza Brito
- Departamento de Fisiologia e Biofísica, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
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Shin JH, Lee CW, Oh SJ, Yun J, Lee K, Park SK, Kim HM, Han SB, Kim Y, Kim HC, Kang JS. Protective effect of silymarin against ethanol-induced gastritis in rats: Role of sulfhydryls, nitric oxide and gastric sensory afferents. Food Chem Toxicol 2013; 55:353-7. [DOI: 10.1016/j.fct.2013.01.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 12/21/2012] [Accepted: 01/15/2013] [Indexed: 10/27/2022]
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20
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Harisa GI, Abo-Salem OM, El-sayed ESM, Shazly G. Effects of nutritional and excessive levels of selenium on red blood cells of rats fed a high cholesterol diet. Biol Trace Elem Res 2013; 152:41-9. [PMID: 23292318 DOI: 10.1007/s12011-012-9588-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 12/20/2012] [Indexed: 10/27/2022]
Abstract
In this study, we investigated the effects of selenium (Se) on the properties of erythrocytes and atherogenic index in the presence and absence of high cholesterol diet (HCD). The effect of selected two different doses (1 μg and 50 μg Se/kg/body weight) on HCD-induced oxidative stress was investigated. The hemolysis of the erythrocytes of the HCD rats as well as by high levels of selenium or their combination was markedly increased. Likewise, atherogenic index and plasma glutathione peroxidase (GPx) activity were significantly increased in the same groups of rats compared to control ones. In contrast, paraoxonase activity, glutathione levels and protein thiol levels, catalase, GPx, and superoxide dismutase activities were significantly decreased in rats that received the HCD, high selenium dose, or their combination. Malondialdehyde and protein carbonyl levels in the plasma and red blood cells were significantly increased by HCD and high selenium dose administration. Co-administration of selenium at low dose with or without an HCD restored all of the investigated parameters to near-normal values. The results of this study suggest that excess selenium administration with HCD worsens the atherogenic index and enhances formation of oxidized red blood cells. At dosage levels in the nutritional range such as 1 μg Se/kg body weight, selenium ameliorates the atherogenic index and preserves the antioxidant capacity of the erythrocytes.
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Affiliation(s)
- Gamaleldin I Harisa
- Department of Pharmaceutics, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia.
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Tamashiro Filho P, Sikiru Olaitan B, Tavares de Almeida DA, Lima JCDS, Marson-Ascêncio PG, Donizeti Ascêncio S, Rios-Santos F, Martins DTDO. Evaluation of antiulcer activity and mechanism of action of methanol stem bark extract of Lafoensia pacari A. St.-Hil. (Lytraceae) in experimental animals. JOURNAL OF ETHNOPHARMACOLOGY 2012; 144:497-505. [PMID: 23069941 DOI: 10.1016/j.jep.2012.09.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Revised: 09/05/2012] [Accepted: 09/13/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Lafoensia pacari St.-Hil. is a tree native to the Brazilian Cerrado. Its bark macerate is popularly used in Brazilian folk medicine for the treatment of peptic ulcer, wound healing and inflammation. AIM OF THE STUDY To evaluate the antiulcer activities of the methanol extract of Lafoensia pacari (MELP) and possible mechanisms of actions involved. MATERIALS AND METHODS The stem bark of Lafoensia pacari was macerated in methanol to obtain the crude methanol extract of Lafoensia pacari (MELP). The gastroprotective and ulcer healing of MELP were evaluated using ethanol, indomethacin, cold-restraint stress-induced (acute) and acetic acid (chronic) ulcer models. The probable mode of action of MELP was also evaluated by determining intestinal transit, involvement of non-protein sulfhyhydryls (NP-SH), gastric mucus secretion, gastric secretory parameters and pro-inflammatory cytokines, tumor necrosis factor-α (TNF-α) and interleukin-17 (IL-17). Phytochemical analysis was carried out using classical methods and ellagic acid, one of the most important pharmacological active compounds was confirmed by HPLC. RESULTS The results of the pharmacological studies on MELP demonstrated potent and effective gastroprotection against ethanol, indomethacin and cold stress-induced acute ulcers and ulcer healing in acetic acid induced chronic ulcer. MELP had no significant effect on the intestinal motility and it is also independent of mucus production but rather have a mucolytic effect. In pylorus-ligated rats the extract showed anti-secretory activity by decreasing total gastric juice volume and gastric acidity while increasing the gastric pH. The gastroprotection against ethanol is partially attributed to effective attenuation in the decrease in NP-SH levels, inhibition of the increases in the pro-inflammatory cytokines, TNF-α and IL-17. Phytochemical analysis of MELP revealed the presence of pyrrogalic tannins, saponins, steroids, triterpenoids and simple phenols, with ellagic acid being the major components. CONCLUSION The results of this study showed that MELP possesses preventive and curative effects against gastric ulcer in experimental animals. These effects are partly dependent on its anti-oxidant, anti-secretory properties and inhibition of pro-inflammatory cytokines and independent of gastric/intestinal motility and mucus secretion. Ellagic acid, a compound of proven antiulcer activity, was found in MELP as the major component. These results confirmed the traditional use of MELP in Brazilian popular medicine for the treatment of gastric ulcers and shed some light on some of its mechanisms of action.
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Affiliation(s)
- Paulo Tamashiro Filho
- Department of Basic Sciences in Health, Faculty of Medicine, Federal University of Mato Grosso, Av. Fernando Correa da Costa, n. 2367, Cuiabá 78060-900, Mato Grosso, Brazil
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Erythrocyte-mediated delivery of pravastatin: In Vitro study of effect of hypotonic lysis on biochemical parameters and loading efficiency. Arch Pharm Res 2012; 35:1431-9. [DOI: 10.1007/s12272-012-0813-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 03/10/2012] [Accepted: 03/22/2012] [Indexed: 01/28/2023]
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Zieger MAJ, Gupta MP, Wang M. Proteomic analysis of endothelial cold-adaptation. BMC Genomics 2011; 12:630. [PMID: 22192797 PMCID: PMC3270058 DOI: 10.1186/1471-2164-12-630] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Accepted: 12/22/2011] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Understanding how human cells in tissue culture adapt to hypothermia may aid in developing new clinical procedures for improved ischemic and hypothermic protection. Human coronary artery endothelial cells grown to confluence at 37°C and then transferred to 25°C become resistant over time to oxidative stress and injury induced by 0°C storage and rewarming. This protection correlates with an increase in intracellular glutathione at 25°C. To help understand the molecular basis of endothelial cold-adaptation, isolated proteins from cold-adapted (25°C/72 h) and pre-adapted cells were analyzed by quantitative proteomic methods and differentially expressed proteins were categorized using the DAVID Bioinformatics Resource. RESULTS Cells adapted to 25°C expressed changes in the abundance of 219 unique proteins representing a broad range of categories such as translation, glycolysis, biosynthetic (anabolic) processes, NAD, cytoskeletal organization, RNA processing, oxidoreductase activity, response-to-stress and cell redox homeostasis. The number of proteins that decreased significantly with cold-adaptation exceeded the number that increased by 2:1. Almost half of the decreases were associated with protein metabolic processes and a third were related to anabolic processes including protein, DNA and fatty acid synthesis. Changes consistent with the suppression of cytoskeletal dynamics provided further evidence that cold-adapted cells are in an energy conserving state. Among the specific changes were increases in the abundance and activity of redox proteins glutathione S-transferase, thioredoxin and thioredoxin reductase, which correlated with a decrease in oxidative stress, an increase in protein glutathionylation, and a recovery of reduced protein thiols during rewarming from 0°C. Increases in S-adenosylhomocysteine hydrolase and nicotinamide phosphoribosyltransferase implicate a central role for the methionine-cysteine transulfuration pathway in increasing glutathione levels and the NAD salvage pathway in increasing the reducing capacity of cold-adapted cells. CONCLUSIONS Endothelial adaptation to mild-moderate hypothermia down-regulates anabolic processes and increases the reducing capacity of cells to enhance their resistance to oxidation and injury associated with 0°C storage and rewarming. Inducing these characteristics in a clinical setting could potentially limit the damaging effects of energy insufficiency due to ischemia and prevent the disruption of integrated metabolism at low temperatures.
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Affiliation(s)
- Michael A J Zieger
- Methodist Research Institute, Indiana University Health, Indianapolis, IN 46202, USA.
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Fernandes M, Cavaco-Paulo A. Protein disulphide isomerase-mediated grafting of cysteine-containing peptides onto over-bleached hair. BIOCATAL BIOTRANSFOR 2011. [DOI: 10.3109/10242422.2012.644436] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Beserra AMSES, Calegari PI, Souza MDC, Dos Santos RAN, Lima JCDS, Silva RM, Balogun SO, Martins DTDO. Gastroprotective and ulcer-healing mechanisms of ellagic acid in experimental rats. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:6957-6965. [PMID: 21644797 DOI: 10.1021/jf2003267] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Ellagic acid (EA), a plant-derived polyphenol, exhibits antioxidant, anti-inflammatory, and gastroprotective effects. Its gastroprotective mechanisms have not been fully elucidated nor have its effects on chronic ulcer previously been described. Toward these ends, the antiulcer activities of EA were evaluated in acute (ethanol and indomethacin) and chronic (acetic acid) ulcer models in Wistar rats. In this study, oral administration of EA significantly prevented the gastric ulceration caused by ethanol, indomethacin, and acetic acid treatments. Its gastroprotective mechanism in ethanol-induced ulcer were partly due to intensification in the endogenous production of nitric oxide, an antioxidant effect by replenishing depletion of endogenous nonprotein sulfhydryls and attenuation of tumor necrosis factor-α increase, whereas in indomethacin ulcer, it is partly due to a reduction in the plasma level of leukotriene B(4). In acetic acid ulcer, promotion of ulcer-healing effects was partly due to attenuation of the elevated levels of the inflammatory cytokines TNF-α, interferon-γ, and interleukins-4 and -6. These findings suggest that ellagic acid exerts its antiulcer activity by strengthening the defensive factors and attenuating the offensive factors.
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Oxidative damage induced by chromium (VI) in rat erythrocytes: protective effect of selenium. J Physiol Biochem 2011; 67:577-88. [DOI: 10.1007/s13105-011-0104-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 05/27/2011] [Indexed: 10/18/2022]
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Alanazi F. Pravastatin provides antioxidant activity and protection of erythrocytes loaded Primaquine. Int J Med Sci 2010; 7:358-65. [PMID: 21060723 PMCID: PMC2974164 DOI: 10.7150/ijms.7.358] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Accepted: 10/27/2010] [Indexed: 12/13/2022] Open
Abstract
Loading erythrocytes with Primaquine (PQ) is advantageous. However, PQ produces damage to erythrocytes through free radicals production. Statins have antioxidant action and are involved in protective effect against situation of oxidative stress. Thus the protective effect of pravastatin (PS) against PQ induced oxidative damage to human erythrocytes was investigated in the current studies upon loading to erythrocytes.The erythrocytes were classified into; control erythrocytes, erythrocytes incubated with either 2 mM of PS or 2 mM of PQ, and erythrocytes incubated with combination of PS plus PQ. After incubation for 30 min, the effect of the drugs on erythrocytes hemolysis as well as some biomarkers of oxidative stress (none protein thiols, protein carbonyl, thiobarbituric acid reactive substance) were investigated.Our results revealed that PS maintains these biomarkers at values similar to that of control ones. On the other hand, PQ cause significant increases of protein carbonyl by 115% and thiobarbituric acid reactive substance by 225% while non-protein thiols were significantly decreased by 112 % compared with control erythrocytes. PS pre-incubation before PQ exerts marked reduction of these markers in comparison with PQ alone. Moreover, at NaCl concentrations between 0.4% and 0.8%, PQ causes significant increase of Red Blood Cells (RBCs) hemolysis in comparison with the other groups (P<0. 001). Scanning electron micrograph indicates spherocytes formation by PQ incubation, but in the other groups the discocyte shape of erythrocytes was preserved.The reduction of protein oxidation and lipids peroxidation by PS is related to antioxidants effect of this statin. Preservation of erythrocytes fragility and morphology by PS are related to its free radicals scavenging effect. It is concluded that pravastatin has protective effect against erythrocytes dysfunction related any situations associated with increased oxidative stress, especially when loaded with PQ.
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Affiliation(s)
- Fars Alanazi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, PO Box 2457, Riyadh 11451, Saudi Arabia.
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El-Abhar HS. Coenzyme Q10: a novel gastroprotective effect via modulation of vascular permeability, prostaglandin E₂, nitric oxide and redox status in indomethacin-induced gastric ulcer model. Eur J Pharmacol 2010; 649:314-9. [PMID: 20858483 DOI: 10.1016/j.ejphar.2010.09.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Revised: 08/13/2010] [Accepted: 09/06/2010] [Indexed: 01/26/2023]
Abstract
Coenzyme Q10 is an essential cofactor in the mitochondrial electron transport pathway, and is endowed for its potent antioxidant capacity; characters that endorse its implication in several clinical practices and as a food supplement. Nevertheless, its potential gastro-protective effect, in acute models, has never been assessed, which is the objective of this study. Since indomethacin mediated gastropathy is multifaceted, including mitochondrial dysfunction and generation of reactive oxygen species, thus, the indomethacin-induced gastric injury serves as a convenient animal model for this work. Rats treated with indomethacin revealed mucosal hemorrhagic lesions, increased microvascular permeability and inhibited prostaglandin E₂ and mucus content. Redox imbalance was reflected by decreased mucosal glutathione (GSH), nitric oxide and glutathione peroxidase contents/activity, along with elevated lipid peroxides. Pretreatment with CoQ10 caused discernible decrease in indomethacin-induced gastric lesions, vascular permeability and lipid peroxide content. In addition, prostaglandin E₂ and GSH levels were restored, while those of nitric oxide and glutathione peroxidase were elevated significantly above normal; however, mucus formation was not altered significantly. The positive effects were comparable to those of sucralfate, the standard drug used herein, except for the mucus and prostaglandin E₂ levels that were increased above normal by sucralfate. CoQ10-mediated gastroprotective effect involves preservation of microvascular permeability, elevation of prostaglandin E₂, improvement of redox status, as well as boosting of nitric oxide. Nevertheless, maintaining gastric mucus content is ruled out.
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Affiliation(s)
- Hanan S El-Abhar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr El-Aini Str., 11562 Cairo, Egypt.
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CHEN CY, KUO TL, SHEU SY, KUO TF. Preventive Effects of Chinese Herb Chai-Hu-Gui-Zhi-Tang Extract on Water Immersion Restraint Stress-Induced Acute Gastric Ulceration in Rats. J Vet Med Sci 2010; 72:679-85. [DOI: 10.1292/jvms.09-0284] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Chi-Yang CHEN
- Graduate Institute of Veterinary Medicine, College of Bio-Resources and Agriculture, National Taiwan University
| | - Tsung-Li KUO
- Department of Forensic Medicine, College of Medicine, National Taiwan University
| | - Shi-Yuan SHEU
- School of Chinese Medicine, China Medical University
- Department of Acupuncture, E-DA Hospital / I-Shou University
| | - Tzong-Fu KUO
- Graduate Institute of Veterinary Medicine, College of Bio-Resources and Agriculture, National Taiwan University
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Mohamadin AM, Ashour OM, El-Sherbeny NA, Alahdal AM, Morsy GM, Abdel-Naim AB. MELATONIN PROTECTS AGAINST HYDROGEN PEROXIDE-INDUCED GASTRIC INJURY IN RATS. Clin Exp Pharmacol Physiol 2009; 36:367-72. [DOI: 10.1111/j.1440-1681.2008.05072.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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