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Taheri Mirghaed M, Ghasemian SO, Mousavi Nasab SF, Rahimi K. Effects of fish oil on ethanol-induced gastric ulcer in rats: inflammatory responses and oxidative stress. Ann Med Surg (Lond) 2024; 86:819-825. [PMID: 38333309 PMCID: PMC10849447 DOI: 10.1097/ms9.0000000000001550] [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] [Received: 09/06/2023] [Accepted: 11/18/2023] [Indexed: 02/10/2024] Open
Abstract
Background The prevalence of peptic ulcers is increasing due to lifestyle changes and harmful diets. Objective The aim of this study was to investigate the effect of fish oil (FO) on gastric ulcers induced by ethanol in rats. Methods The pharmacological efficacy of FO with doses of 5 and 10 mg/kg investigated using the gastric ulcer index, the acidity of gastric secretions, pro-inflammatory cytokine assessment, and oxidative stress examination. Results Ethanol-induced gastric ulcer improves with FO 5 or 10 mg/kg pretreatment (P<0.05). FO did have acid-neutralizing activity. FO also increased the levels of glutathione and catalase and decreased the malondialdehyde levels (P<0.05). Moreover, FO reduced the levels of tumour necrosis factor alpha (TNF-α) interleukin-6 (IL-6), through downregulation of nuclear factor kappa B (NF-κB) (P<0.05). Pretreatment with FO attenuates ethanol-induced gastric ulceration. Conclusion The observed effects may be due to the role of FO in regulating gastric secretions, changes in the expression of NF-κB, and changes in the levels of oxidative stress factors.
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Affiliation(s)
| | | | | | - Kaveh Rahimi
- Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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Venturini CL, Damazo AS, Silva MJD, Muller JDAI, Oliveira DM, Figueiredo FDF, Serio BFD, Arunachalam K, Martins DTDO. Antiulcer activity and mechanism of action of the hydroethanolic extract of leaves of Terminalia argentea Mart. In different in vivo and in vitro experimental models. JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:116972. [PMID: 37517568 DOI: 10.1016/j.jep.2023.116972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 07/24/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Terminalia argentea Mart. (Combretaceae) is a deciduous tree commonly found in Brazil, Bolivia, and Paraguay. It occurs in all regions of Brazil and is widespread in the Amazon, Cerrado, Pantanal, Atlantic Rain Forest, and Caatinga Biomes. In the traditional medicine of Brazil, people widely use tea or decoction of its leaf materials for treating gastritis, ulcers, wound healing, and inflammation. AIM OF THE STUDY The current study aims to evaluate the gastroprotective and ulcer-healing activities of the hydroethanolic extract of T. argentea leaves (HETa) and investigate the underlying mechanisms of action through in vivo and in vitro experiments. METHODS We extracted the leaves of T. argentea with a 70% hydroethanolic solution (HETa) and performed phytochemical analysis using high-performance liquid chromatography (HPLC) and electrospray ionization mass spectrometry (ESI-MSn). We researched the antiulcer activity using in vivo and in vitro experiments, administering three doses (2, 10, and 50 mg/kg) and different concentrations of 1, 5, and 20 μg/mL, respectively. We verified the acute antiulcer activity using chemical models (acidified ethanol (EtOH/HCl) and indomethacin (IND)) and physiological models (water-immersion stress (WRS)). To induce chronic ulcers, used acetic acid and treated the animals for seven days. To investigate the mechanism of action, conducted assays of antioxidant activity, measured the dosage of inflammatory cytokines, quantified mucus, treated with inhibitors (IND, L-NAME, glibenclamide, and yohimbine), performed histopathological analysis, and measured gastric acid secretion. Furthermore, we performed in vitro experiments on murine macrophage cell lines (RAW 264-7 cells) to quantify nitrite/nitrate and cytokine production and on V79-4 cells to verify cell proliferation/migration. RESULTS We conducted HPLC and ESI-MSn analyses to obtain a fingerprint of the chemical composition of the HETa, revealing the presence of phenolics (caffeoyl ellagic acid), flavonoids (rutin, quercetin xyloside, quercetin rhamnoside, quercetin glucoside, quercetin galloyl xyloside, quercetin), and tannins (terminalin), respectively. The three doses of HETa reduced acute and chronic ulcers in different models. The mechanism of action involves increasing mucus production and angiogenesis, and it partially involves prostaglandins, nitric oxide, K+ATP channels, and α2-adrenergic receptors. HETa also exhibited antioxidant potential, reducing myeloperoxidase (MPO) activity, and increasing glutathione (GSH) levels. Moreover, it demonstrated anti-inflammatory action by reducing nitrite/nitrate levels and pro-inflammatory cytokine concentrations in vivo, and it increased in vitro proliferation/migration of fibroblasts. CONCLUSIONS The study shows that HETa presents a potent preventive and curative antiulcer effect in different ulcer models, supporting the popular use of homemade preparations of T. argentea leaves. The preventive and gastric healing ulcer activity of HETa involves multiple targets, including increasing the gastric mucus barrier, antioxidant defenses, and anti-inflammatory effects on gastric mucosa repair. Phytochemical analysis identified the presence of phenolic compounds, flavonoids, and tannins in HETa, and the antiulcer activity may be attributable to the combined effect of these constituents.
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Affiliation(s)
- Claudio Luis Venturini
- Pharmacology Laboratory, Post-Graduate Program in Health Sciences, Federal University of Mato Grosso (UFMT), Cuiabá, MT, Brazil; Pharmacology Laboratory, Department of Basic Sciences in Health, Federal University of Mato Grosso (UFMT), Cuiabá, MT, Brazil.
| | - Amilcar Sabino Damazo
- Histology Laboratory, Department of Basic Sciences in Health, Federal University of Mato Grosso (UFMT), Cuiabá, MT, Brazil.
| | - Marcelo José Dias Silva
- Laboratory of Medicinal Plants and Herbal Medicines, Federal University of Alfenas (UNIFAL-MG), Rua Gabriel Monteiro da Silva, 700, Centro, Alfenas, Minas Gerais, Brazil.
| | - Jessica de Araujo Isaias Muller
- Pharmacology Laboratory, Post-Graduate Program in Health Sciences, Federal University of Mato Grosso (UFMT), Cuiabá, MT, Brazil.
| | - Darley Maria Oliveira
- Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Sinop Campus, Mato Grosso, Brazil.
| | - Fabiana de Freitas Figueiredo
- Pharmacology Laboratory, Post-Graduate Program in Health Sciences, Federal University of Mato Grosso (UFMT), Cuiabá, MT, Brazil.
| | - Bruna Fioravante Di Serio
- Pharmacology Laboratory, Post-Graduate Program in Health Sciences, Federal University of Mato Grosso (UFMT), Cuiabá, MT, Brazil.
| | - Karuppusamy Arunachalam
- Center for Studies in Stem Cells, Cell Therapy and Toxicological Genetics (CeTroGen), Faculty of Medicine, Federal University of Mato Grosso Do Sul (UFMS), Campo Grande, 79070-900, MS, Brazil; Post-Graduate Program in Health and Development of the Midwest Region, Federal University of Mato Grosso Do Sul (UFMS), Campo Grande, 79070-900, MS, Brazil.
| | - Domingos Tabajara de Oliveira Martins
- Pharmacology Laboratory, Post-Graduate Program in Health Sciences, Federal University of Mato Grosso (UFMT), Cuiabá, MT, Brazil; Pharmacology Laboratory, Department of Basic Sciences in Health, Federal University of Mato Grosso (UFMT), Cuiabá, MT, Brazil.
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Badr AM, El-Orabi NF, Mahran YF, Badr AM, Bayoumy NM, Hagar H, Elmongy EI, Atawia RT. In vivo and In silico evidence of the protective properties of carvacrol against experimentally-induced gastric ulcer: Implication of antioxidant, anti-inflammatory, and antiapoptotic mechanisms. Chem Biol Interact 2023; 382:110649. [PMID: 37499997 DOI: 10.1016/j.cbi.2023.110649] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/09/2023] [Accepted: 07/24/2023] [Indexed: 07/29/2023]
Abstract
Gastric ulcer is a serious disease that affects millions of individuals worldwide. Alcohol consumption is a major contributor to the disease pathogenesis and ethanol-induced ulcer in rats closely recapitulates the clinical pathology of ulcer. In this study, rats were pretreated with carvacrol (CAR,50 and 100 mg/kg, orally) 1 h before absolute ethanol administration to induce gastric ulcer. CAR prevented ethanol-induced increases in gastric volume and acidity while restored mucin content. The gastro-protective activity of CAR, particularly the higher dose (100 mg/kg), was further supported by histopathological examination, as manifested by reduced gastric lesions. Interestingly, oxidative stress is linked to early stages of ulcer development and progression. In this study, ethanol administration upregulated the levels of ROS-producing enzymes, NADPH oxidase homologs 1 and 4 (Nox1 and Nox4) and lipid peroxides while depleting the antioxidant defense mechanisms, including GSH, Glutathione Peroxidase (GPX) and catalase. Interestingly, these alterations were significantly ameliorated by CAR pretreatment. Additionally, CAR possesses anti-inflammatory and anti-apoptotic activities. Pretreatment with CAR blunted ethanol-induced increases in inflammatory cytokines (NF-κB and TNF-α) and rectified the apoptosis regulator (Bax/Bcl2 ratio) in gastric tissue. Moreover, the docking simulation of CAR illustrated good fitting and interactions with GPX, Nox1 and TNF-α through the formation of hydrogen and hydrophobic (pi-H) bonds with conservative amino acids, thus, further supporting the anti-inflammatory and antioxidant effects underlying the gastroprotective effects of CAR. In conclusion, this study elucidates, using in silico and in vivo models, that the gastroprotective activity of CAR is attributed, at least in part, to its mucin-secretagogue, antioxidative, anti-inflammatory, and anti-apoptotic mechanisms.
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Affiliation(s)
- Amira M Badr
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Naglaa F El-Orabi
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt
| | - Yasmen F Mahran
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Abasia, Cairo, Egypt
| | - Amul M Badr
- Department of Medical Biochemistry and Molecular Biology, Kasr Al-Aini Faculty of Medicine, Cairo University, Egypt
| | | | - Hanan Hagar
- Department of Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Elshaymaa I Elmongy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Helwan University, Ain Helwan, Cairo, Egypt
| | - Reem T Atawia
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Abasia, Cairo, Egypt; Department of Pharmaceutical Sciences, College of Pharmacy, Southwestern Oklahoma State University, Weatherford, OK, United States.
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Subhawa S, Arpornchayanon W, Jaijoy K, Chansakaow S, Soonthornchareonnon N, Sireeratawong S. Anti-Inflammatory, Antinociceptive, Antipyretic, and Gastroprotective Effects of Eurycoma longifolia Jack Ethanolic Extract. Life (Basel) 2023; 13:1465. [PMID: 37511840 PMCID: PMC10381342 DOI: 10.3390/life13071465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/25/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023] Open
Abstract
Tongkat ali (Eurycoma longifolia Jack) (ELJ) is a plant in the Simaroubaceae family. Its roots are used in traditional Thai medicine to treat inflammation, pain, and fever; however, the antiulcer abilities of its ethanolic extract have not been studied. This study examined the anti-inflammatory, antinociceptive, antipyretic, and gastroprotective effects of ethanolic ELJ extract in animal models and found that ELJ effectively reduced EPP-induced ear edema in a dose-dependent manner and that a high dose of ELJ inhibited carrageenan-induced hind paw edema formation. In cotton-pellet-induced granuloma formation, a high dose of ELJ suppressed the increases in wet granuloma weight but not dry or transudative weight. In the formalin-induced nociception study, ELJ had a significant dose-dependent inhibitory impact. Additionally, the study found that yeast-induced hyperthermia could be significantly reduced by antipyretic action at the highest dose of ELJ. In all the gastric ulcer models induced by chemical substances or physical activity, ELJ extracts at 150, 300, and 600 mg/kg also effectively prevented gastric ulcer formation. In the pyloric ligation model, however, the effects of ELJ extract on gastric volume, gastric pH, and total acidity were statistically insignificant. These findings support the current widespread use of Eurycoma longifolia Jack in traditional medicine, suggest the plant's medicinal potential for development of phytomedicines with anti-inflammatory, antinociceptive, and antipyretic properties, and support its use in the treatment of gastric ulcers due to its gastroprotective properties.
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Affiliation(s)
- Subhawat Subhawa
- Clinical Research Center for Food and Herbal Product Trials and Development (CR-FAH), Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | | | - Kanjana Jaijoy
- McCormick Faculty of Nursing, Payap University, Chiang Mai 50000, Thailand
| | - Sunee Chansakaow
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai 50200, Thailand
| | | | - Seewaboon Sireeratawong
- Clinical Research Center for Food and Herbal Product Trials and Development (CR-FAH), Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
- Department of Preclinical Science, Division of Pharmacology, Faculty of Medicine, Rungsit Campus, Thammasat University, Pathum Thani 12120, Thailand
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Hassan HA, Ayoub IM, Ragab TIM, Afifi SM, El-Gendy AENG, Farrag ARH, Abd-ELGawad AM, Farag M, Elshamy A, Ammar NM. Metabolomics approach of Symphyotrichum squamatum ethanol extract and its nano-Ag formulation protective effect on gastric ulcer via bio-chemical and pathological analyses. Biomarkers 2023; 28:190-205. [PMID: 36484430 DOI: 10.1080/1354750x.2022.2157488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
ContextGastric ulcer (GU) a widely distributed ailment is associated with many causes, including alcohol consumption.Materials and MethodsChemical profiling of Symphyotrichum squamatum ethanol extract (SSEE) was established via ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry (UPLC-qTOF-MS) and employed in a silver nano-formulation (SSEE-N-Ag). SSEE and SSEE-N-Ag antiulcer activities were estimated against ethanol-induced rats by biochemical, histological, and metabolomics assessments. Reduced glutathione, total antioxidant capacity and prostaglandin E2 levels and gastric mucosa histopathological examination were analysed. The rats' metabolome changing alongside action pathways were elucidated via metabolite profile coupled to multivariate data analysis.ResultsUPLC-MS profiling of SSEE identified 75 components belonging to various classes. Compared with control, EtOH-treated rats showed decreased of tissue GSH, TAC and PGE2 by 62.32%, 51.85% and 47.03% respectively. SSEE and SSEE-N-Ag administration mitigated biochemical and histopathological alterations. Serum metabolomics analysis revealed for changes in several low molecular weight metabolites with ulcer development. These metabolites levels were restored to normal post-administration of SSEE-N-Ag. SSEE-N-Ag as mediated via modulating numerous metabolic pathways such as lipids, pyrimidine, energy metabolism and phosphatidylinositol signalling. This study provides novel insight for metabolic mechanisms underlying gastric ulcer relieving effect.ConclusionPresent results revealed potential antiulcer effect of SSEE and SSEE-N-Ag by decreasing ulcer-associated syndromes, supporting their anti-ulcerogenic action.
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Affiliation(s)
- Heba A Hassan
- Therapeutic Chemistry Department, Pharmaceutical and Drugs Research Institute, National Research Centre, Giza, Egypt
| | - Iriny M Ayoub
- Pharmacognosy Department, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Tamer I M Ragab
- Chemistry of Natural and Microbial Products Department, National Research Centre, Giza, Egypt
| | - Sherif M Afifi
- Pharmacognosy Department, Faculty of Pharmacy, University of Sadat City, Sadat City, Egypt
| | | | | | - Ahmed M Abd-ELGawad
- Department of Botany, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Mohamed Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Cairo, Egypt
| | - Abdelsamed Elshamy
- Department of Natural Compounds Chemistry, National Research Center, Giza, Egypt
| | - Naglaa M Ammar
- Therapeutic Chemistry Department, Pharmaceutical and Drugs Research Institute, National Research Centre, Giza, Egypt
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Abdellatif KR, Abdelall EK, Lamie PF, Labib MB, Abdelhakeem MM, Abdel-Fattah MM, El-Nahaas ES. Novel pyrazole-oxadiazole hybrids possessing methanesulphonyl pharmacophore with good gastric safety profile: Design, synthesis, cyclooxygenase inhibition, anti-inflammatory activity and histopathological studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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7
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Gastrointestinal effects of Mentha aquatica L. essential oil. Inflammopharmacology 2022; 30:2127-2137. [PMID: 35451723 DOI: 10.1007/s10787-022-00989-x] [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: 02/23/2022] [Accepted: 03/30/2022] [Indexed: 11/05/2022]
Abstract
Found in humid regions and waterways and popularly used to treat gastrointestinal problems among other applications, the present study evaluated the M. aquatica essential oil (OEMa) as a therapeutic alternative to treat gastrointestinal disorders. Produced by steam distillation, chemical composition of OEMa was determined by GC-MS analysis. The ethanol-induced ulcer and the dose-repeated acetylsalicylic acid (ASA)-induced gastrointestinal lesions models in rats evaluated, respectively, the prophylactic and curative effects of EOMa on peptic ulcers. The EOMa's effect on gastric secretion, gastric mucus and gastrointestinal motility were evaluated in in vivo models. The curative effect of EOMa on acute colitis was evaluated using the DSS-induced colitis model in mice. Obtained in 0.17% yield (w/w), with carvone (54.82 ± 1.39 g/100 g oil) as the main constituent, EOMa (at 75 mg/kg) showed potent gastroprotective effect (> 90%) mediated by non-protein sulfhydryl compounds (NPSH) and nitric oxide (NO) modulation alongside reduction in gastric secretion volume and total acidity. EOMa did not affect gastric mucus production and gastrointestinal motility. In dose-repeated ASA-induced gastrointestinal lesions model, EOMa (at 25 mg/kg) promoted the inflammatory process resolution both in gastric and duodenal walls by modulating NPSH, NO and myeloperoxidase levels. Despite delaying in 2 days the clinical symptoms worsening, EOMa (at 25 mg/kg) was not able to protect colon tissues from DSS-induced acute colitis as evidenced by macroscopic, biochemical, and histopathological parameters. This is the first report of Mentha aquatica essential oil as a promising herbal medicine for peptic ulcers treatment together with an adjuvant effect in IBD.
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Raish M, Shahid M, Bin Jardan YA, Ansari MA, Alkharfy KM, Ahad A, Abdelrahman IA, Ahmad A, Al-Jenoobi FI. Gastroprotective Effect of Sinapic Acid on Ethanol-Induced Gastric Ulcers in Rats: Involvement of Nrf2/HO-1 and NF-κB Signaling and Antiapoptotic Role. Front Pharmacol 2021; 12:622815. [PMID: 33716749 PMCID: PMC7946842 DOI: 10.3389/fphar.2021.622815] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/13/2021] [Indexed: 12/13/2022] Open
Abstract
Background: In the current study, we evaluated the therapeutic potential of sinapic acid (SA) in terms of the mechanism underlying its gastroprotective action against ethanol-induced gastric ulcers in rats. Methods: These effects were examined through gross macroscopic evaluation of the stomach cavity [gastric ulcer index (GUI)], alteration in pH, gastric juice volume, free acidity, total acidity, total gastric wall mucus, and changes in PGE2. In addition, we evaluated lipid peroxidation (malondialdehyde), antioxidant systems (catalase and glutathione), inflammatory markers [tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), and myeloperoxidase (MPO)], apoptotic markers (caspase-3, Bax, and Bcl-2), nuclear factor-κB [NF-κB (p65)], NO levels, and histopathological staining (H and E and PAS). Results: In rats with ethanol-induced ulcers, pre-treatment with SA (40 mg/kg p. o.) decreased the sternness of ethanol-induced gastric mucosal injuries by decreasing the GUI, gastric juice volume, free acidity, and total acidity. In addition, the pH and total gastric mucosa were increased, together with histopathological alteration, neutrophil incursion, and increases in PGE2 and NO2. These effects were similar to those observed for omeprazole, a standard anti-ulcer drug. SA was shown to suppress gastric inflammation through decreasing TNF-α, IL-6, and MPO, as well as curbing gastric oxidative stress through the inhibition of lipid peroxidation (MDA) and restoration of depleted glutathione and catalase activity. SA inhibited Bcl-2-associated X (Bax) and caspase-3 activity, and restored the antiapoptotic protein Bcl-2; these findings indicate the antiapoptotic potential of SA, leading to enhanced cell survival. SA also repressed NF-κB signaling and increased IκBα. Moreover, SA upregulated the nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1), thereby restoring depleted antioxidant defense enzymes and implicating the NRF2/HO-1 signaling pathways. Conclusion: These results suggest that the prophylactic administration of SA (40 mg/kg) can ameliorate ethanol-induced gastric ulcers in rats primarily via the modulation of Nrf2/HO-1 and NF-κB signaling and subsequent enhancement of cell viability.
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Affiliation(s)
- Mohammad Raish
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mudassar Shahid
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Yousef A Bin Jardan
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mushtaq Ahmad Ansari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Khalid M Alkharfy
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Abdul Ahad
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | | | - Ajaz Ahmad
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Fahad I Al-Jenoobi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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The pathophysiology of acute gastric ulcer development in normotensive and hypertensive rats: A comparative study. Eur J Pharmacol 2020; 887:173469. [DOI: 10.1016/j.ejphar.2020.173469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 07/30/2020] [Accepted: 08/06/2020] [Indexed: 01/24/2023]
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10
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Abdellatif KRA, Abdelall EKA, Lamie PF, Labib MB, El-Nahaas ES, Abdelhakeem MM. New pyrazole derivatives possessing amino/methanesulphonyl pharmacophore with good gastric safety profile: Design, synthesis, cyclooxygenase inhibition, anti-inflammatory activity and histopathological studies. Bioorg Chem 2019; 95:103540. [PMID: 31911297 DOI: 10.1016/j.bioorg.2019.103540] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 10/16/2019] [Accepted: 12/21/2019] [Indexed: 10/25/2022]
Abstract
New series of pyrazole derivatives Va-c, VIa-c, VIIa-f, and VIII possessing amino/methanesulphonyl moiety as COX-2 pharmacophore were designed and synthesized. All compounds were evaluated for both in vitro COX inhibition and in vivo anti-inflammatory activities and all of them were more potent against COX-2 than COX-1 isozyme and showed good in vivo anti-inflammatory activity. Compounds Va, VIa, VIc and VIIa-c showed good COX-2 SI (246.8-353.8) in comparison with the COX-2 selective drug; celecoxib (326.7). Also, they showed good anti-inflammatory activity with edema inhibition (51-86 and 83-96%) relative to celecoxib (60.6 and 82.8%) after 3 and 5 h respectively. Additionally, these potent derivatives Va, VIa, VIc and VIIa-c were significantly less ulcerogenic (ulcer indexes = 0.7-2.0) than indomethacin (ulcer index = 21.3) and were of acceptable ulcerogenicity when compared with the non-ulcerogenic reference drug celecoxib (ulcer index = 1.3). The obtained ulcerogenic liability data revealed the gastric safety of these derivatives which was confirmed by the histopathological studies. Docking study was performed for all synthesized derivatives to explain their interaction with COX-2 receptor active site.
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Affiliation(s)
- Khaled R A Abdellatif
- Department of Pharmaceutical Organic Chemistry, Beni-Suef University, Beni-Suef 62514, Egypt; Pharmaceutical Sciences Department, Ibn Sina National College for Medical Studies, Jeddah 21418, Saudi Arabia.
| | - Eman K A Abdelall
- Department of Pharmaceutical Organic Chemistry, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Phoebe F Lamie
- Department of Pharmaceutical Organic Chemistry, Beni-Suef University, Beni-Suef 62514, Egypt
| | - Madlen B Labib
- Department of Pharmaceutical Organic Chemistry, Beni-Suef University, Beni-Suef 62514, Egypt
| | - El-Shaymaa El-Nahaas
- Departement of Pathology, Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Marwa M Abdelhakeem
- Department of Pharmaceutical Organic Chemistry, Beni-Suef University, Beni-Suef 62514, Egypt
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11
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Périco LL, Rodrigues VP, Ohara R, Nunes VVA, da Rocha LRM, Vilegas W, Dos Santos C, Hiruma-Lima CA. Can the gastric healing effect of Eugenia punicifolia be the same in male and female rats? JOURNAL OF ETHNOPHARMACOLOGY 2019; 235:268-278. [PMID: 30763697 DOI: 10.1016/j.jep.2019.02.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 01/20/2019] [Accepted: 02/06/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Eugenia punicifolia (Kunth) DC. (Myrtaceae), an Amazonian medicinal plant known as "pedra-ume-caá," is popularly used as a natural remedy for inflammation, wounds, infections, diabetes, fever, and flu. Its anti-inflammatory, antinociceptive, and gastroprotective effects have already been characterized. We evaluated the gastric healing effect of the hydroalcoholic extract of the leaves of E. punicifolia (HEEP) in male and female Wistar rats against nonsteroidal anti-inflammatory drugs (NSAIDs) and ethanol. MATERIALS AND METHODS The healing effect of HEEP on the gastric mucosa of adult male and female Wistar rats was measured after the chronic application of aggressive factors such as NSAIDs or 80% ethanol. Male, and intact and ovariectomized (OVZ) female rats were treated with HEEP for two days (NSAIDs) or one, two, four, and six days (80% ethanol). The stomachs were analyzed macroscopically for ulcerative lesions (mm2), and the healing process was measured using biochemical analysis with anti-inflammatory and antioxidant parameters. RESULTS Macroscopic evaluation of the gastric mucosa showed that gastric lesions induced by NSAIDs were significantly healed (66%) and pro-inflammatory interleukin 5 cytokine level was decreased after two-day oral treatment with HEEP compared with those in the negative control group (p < 0.05). However, the gastric lesions induced by NSAIDs did not heal in HEEP-treated female rats (p > 0.05). In addition, four-day treatment with HEEP significantly healed the gastric lesions induced by ethanol in male and female rats (63% and 78%, respectively) compared to those of the negative control group (p < 0.05). However, the OVZ group required six days of HEEP treatment to heal gastric ulcers (67% compared to the control group). HEEP exerts the healing effect against ethanol by significantly reducing neutrophil infiltration into the gastric mucosa by decreasing myeloperoxidase activity in male and OVZ rats after four and six days of treatment, respectively (p < 0.05). Four-day treatment with HEEP also increased the level of a non-enzymatic antioxidant, reduced glutathione in intact females compared to that of the negative control group (p < 0.05). CONCLUSION These findings indicated that HEEP was effective in promoting the healing of gastric ulcers induced by NSAIDs or ethanol. The gastric healing effects of this extract could be affected by female sex hormone interference; in future, comprehensive studies should be performed by considering sex differences.
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Affiliation(s)
- Larissa Lucena Périco
- Department of Physiology, Biosciences Institute, UNESP-São Paulo State University, CEP 18618-689 Botucatu, São Paulo, Brazil
| | - Vinícius Peixoto Rodrigues
- Department of Physiology, Biosciences Institute, UNESP-São Paulo State University, CEP 18618-689 Botucatu, São Paulo, Brazil
| | - Rie Ohara
- Department of Physiology, Biosciences Institute, UNESP-São Paulo State University, CEP 18618-689 Botucatu, São Paulo, Brazil
| | - Vânia Vasti Alfieri Nunes
- Department of Physiology, Biosciences Institute, UNESP-São Paulo State University, CEP 18618-689 Botucatu, São Paulo, Brazil
| | - Lúcia Regina Machado da Rocha
- Department of Physiology, Biosciences Institute, UNESP-São Paulo State University, CEP 18618-689 Botucatu, São Paulo, Brazil
| | - Wagner Vilegas
- Biosciences Institute, UNESP-São Paulo State University, CEP 11330-900 São Vicente, São Paulo, Brazil
| | - Catarina Dos Santos
- Department of Biological Science, Faculty of Sciences and Languages, UNESP-São Paulo State University, CEP 19806-900 Assis, São Paulo, Brazil
| | - Clélia Akiko Hiruma-Lima
- Department of Physiology, Biosciences Institute, UNESP-São Paulo State University, CEP 18618-689 Botucatu, São Paulo, Brazil.
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Costa P, Almeida MO, Lemos M, Arruda C, Casoti R, Somensi LB, Boeing T, Mariott M, da Silva RDCMVDAF, Stein BDP, Souza PD, Dos Santos AC, Bastos JK, da Silva LM, Andrade SFD. Artepillin C, drupanin, aromadendrin-4'-O-methyl-ether and kaempferide from Brazilian green propolis promote gastroprotective action by diversified mode of action. JOURNAL OF ETHNOPHARMACOLOGY 2018; 226:82-89. [PMID: 30107246 DOI: 10.1016/j.jep.2018.08.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 07/29/2018] [Accepted: 08/09/2018] [Indexed: 06/08/2023]
Abstract
ETHOPHARMACOLOGICAL RELEVANCE The propolis is extensively used in folk medicine in natura or to prepare pharmaceutical formulations since ancient time to improve health or prevent diseases, among them gastrointestinal disorders. Aiming to contribute in the scientific validation about the popular use of Brazilian Green propolis (BGP) against gastritis and gastric ulcer, this work evaluated the antiulcer potential of isolated compounds from BGP, three prenylated p-coumaric acid derivatives and two flavonoids, respectively named: 3,5 diprenyl-4-hydroxycinnamic acid (artepillin C) (1), 3-prenyl-4-dihydroxycinnamoiloxy cinnamic acid (baccharin) (2), 3-prenyl-4-hydroxycinnamic acid (drupanin) (3), aromadendrin-4'-O-methyl-ether (4) and kaempferide (5). MATERIAL AND METHODS The compounds were characterized by nuclear magnetic resonance and mass spectrometry. Their gastroprotective effects were evaluated against ethanol/HCl- and indomethacin-induced ulcer in mice. Further, histological, histochemical, oxidative and inflammatory parameters were analyzed at ulcerated tissue. Acid antisecretory activities also were also assessed. RESULTS Compound 2 did not reduce the ethanol/HCl- induced ulcer at 30 mg/kg (p.o), whereas the minimum oral gastroprotective doses of 1, 3, 4 and 5 were 0.3, 0.3, 3 and 3 mg/kg, respectively. Besides, these compounds prevented ethanol/HCl-induced ulcer by intraperitoneal route, as well as indomethacin-induced ulcer by oral route. The gastroprotection was accompanied by normalization of superoxide dismutase, catalase and glutathione-S-transferase activities and reduction in myeloperoxidase activity. Moreover, the compounds 4 and 5 increased the gastric mucin content and 1 reduced TNF amount. Furthermore, 1, 3, 4 and 5 decreased volume, pH, total acidity and pepsin activity of the gastric juice from rats. CONCLUSIONS Together, our findings showed a diversified mode of action elicited by 1, 3, 4 and 5 on the gastroprotection and contribute to explain the anti-ulcer activity reported for BGP.
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Affiliation(s)
- Philipe Costa
- Programa de Pós Graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI) - Campus Itajaí, Rua Uruguai, 458, Centro CEP: 88302-901, Santa Catarina, Brazil
| | - Marilia O Almeida
- School of Pharmaceutical Sciences of Ribeirão Preto of the University of São Paulo, Avenida do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | - Marivane Lemos
- School of Pharmaceutical Sciences of Ribeirão Preto of the University of São Paulo, Avenida do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | - Caroline Arruda
- School of Pharmaceutical Sciences of Ribeirão Preto of the University of São Paulo, Avenida do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | - Rosana Casoti
- School of Pharmaceutical Sciences of Ribeirão Preto of the University of São Paulo, Avenida do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | - Lincon Bordignon Somensi
- Programa de Pós Graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI) - Campus Itajaí, Rua Uruguai, 458, Centro CEP: 88302-901, Santa Catarina, Brazil
| | - Thaise Boeing
- Programa de Pós Graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI) - Campus Itajaí, Rua Uruguai, 458, Centro CEP: 88302-901, Santa Catarina, Brazil
| | - Marihá Mariott
- Programa de Pós Graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI) - Campus Itajaí, Rua Uruguai, 458, Centro CEP: 88302-901, Santa Catarina, Brazil
| | - Rita de Cássia Melo Vilhena de Andrade Fonseca da Silva
- Programa de Pós Graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI) - Campus Itajaí, Rua Uruguai, 458, Centro CEP: 88302-901, Santa Catarina, Brazil
| | - Bruna De Paoli Stein
- Programa de Pós Graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI) - Campus Itajaí, Rua Uruguai, 458, Centro CEP: 88302-901, Santa Catarina, Brazil
| | - Priscila de Souza
- Programa de Pós Graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI) - Campus Itajaí, Rua Uruguai, 458, Centro CEP: 88302-901, Santa Catarina, Brazil
| | - Ana Caroline Dos Santos
- Programa de Pós Graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI) - Campus Itajaí, Rua Uruguai, 458, Centro CEP: 88302-901, Santa Catarina, Brazil
| | - Jairo K Bastos
- School of Pharmaceutical Sciences of Ribeirão Preto of the University of São Paulo, Avenida do Café, s/n, 14040-903 Ribeirão Preto, SP, Brazil
| | - Luísa Mota da Silva
- Programa de Pós Graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI) - Campus Itajaí, Rua Uruguai, 458, Centro CEP: 88302-901, Santa Catarina, Brazil
| | - Sérgio Faloni de Andrade
- Programa de Pós Graduação em Ciências Farmacêuticas, Núcleo de Investigações Químico-Farmacêuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI) - Campus Itajaí, Rua Uruguai, 458, Centro CEP: 88302-901, Santa Catarina, Brazil.
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Essential oil of Cymbopogon citratus (lemongrass) and geraniol, but not citral, promote gastric healing activity in mice. Biomed Pharmacother 2017; 98:118-124. [PMID: 29248831 DOI: 10.1016/j.biopha.2017.12.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 11/16/2017] [Accepted: 12/04/2017] [Indexed: 02/06/2023] Open
Abstract
Cymbopogon citratus, popularly known as lemongrass, is used for the treatment of gastric, nervous and hypertensive disorders, in addition to its use in the food and pharmaceutical industries. This study evaluated the gastroprotective and gastric healing effect of essential oil of C. citratus (EOCC), citral and geraniol at doses of 1-100 mg/kg (p.o) on acute ethanol-induced ulcer and chronic acetic acid-induced ulcer. Histological and histochemical evaluation was also performed, as well as the in vitro evaluation of the effects of these phytochemicals on H+/K+-ATPase activity. In the ethanol-induced gastric ulcer, the minimum effective oral dose of EOCC, citral and geraniol were 10, 100 and 3 mg/kg, reducing the ulcer area by 51.67%, 96.57% and 55.74%, respectively, compared to vehicle group (25.82 ± 3.59 mm2). Moreover, EOCC (10 mg/kg, p.o) and geraniol (3 mg/kg), but not citral (100 mg/kg), accelerated the gastric healing process by 34.52 and 80.57%, compared to acetic-acid ulcerated group treated with vehicle (36.04 ± 1.03 mm2). These healing effects were confirmed histologically by the contraction of the ulcer base and by the enhancement on mucin staining in slices of ulcer site from mice treated with EOCC or geraniol. Interestingly, EOCC and citral at 100 μg/ml inhibited the H+/ K+-ATPase activity by 28.26% and 44.36%, whereas geraniol did not change this parameter. Together, these findings confirm the gastroprotective and healing gastric ulcer effects of essential oil from aerial parts of C. citratus and added the information that geraniol, but not citral, promotes healing effects on installed ulcers.
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Park CH, Son HU, Yoo CY, Lee SH. Low molecular-weight gel fraction of Aloe vera exhibits gastroprotection by inducing matrix metalloproteinase-9 inhibitory activity in alcohol-induced acute gastric lesion tissues. PHARMACEUTICAL BIOLOGY 2017; 55:2110-2115. [PMID: 28874080 PMCID: PMC6130566 DOI: 10.1080/13880209.2017.1371770] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
CONTEXT Aloe has been used for the prevention and cure of various diseases and symptoms including burns, injuries, oedema and pain. OBJECTIVE This study determines the specific inhibitory activity of matrix metalloproteinase (MMP)-9 induced by the low molecular-weight gel fraction of Aloe vera (L.) Burm.f. (lgfAv) on alcohol-induced acute gastric lesions. MATERIALS AND METHODS We examined the protective effects of oral (p.o.) administration of lgfAv (molecular weight cutoff <50.0 kDa, 150.0 mg/kg body weight) in a Balb/c mouse model of alcohol-induced acute gastritis for 1 h exposure. By measuring ulcer index, we compared the antiulcerative activity of the fraction. mRNA expression and immunohistochemical analysis of various biomarkers were performed. RESULTS The lgfAv-treated mice exhibited drastically fewer ulcer lesions than the untreated control mice did. It featured that lgfAv lessened the ulcer lesions than their relevant controls. Moreover, the transcriptional level of MMP-9 was completely alleviated by lgfAv treatment in alcohol-treated gastritis-induced mice. DISCUSSION The transcriptional level of MMP-9 was significantly alleviated by lgfAv treatment of the model. However, reverse transcription-polymerase chain reaction (RT-PCR) and immunohistochemistry experiments revealed that lgfAv treatment in mucosal tissues had the potential to inhibit the mRNA and protein expression levels of MMP-9, respectively. The protein expression of MMP-9 was closely associated with lgfAv-induced gastroprotection against alcohol-induced gastric lesions. CONCLUSIONS The present findings suggest that lgfAv has the potential to alleviate alcohol-induced acute gastric lesions, which is mediated in part, mainly by the suppression of the mRNA expression of MMP-9.
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Affiliation(s)
- Chul-Hong Park
- Department of Food Science and Biotechnology, Graduate School, Kyungpook National University, Daegu, Korea
- Radiation Research Division for Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Korea
| | - Hyeong-U Son
- Department of Food Science and Biotechnology, Graduate School, Kyungpook National University, Daegu, Korea
- Food and Bio-Industry Research Institute, Kyungpook National University, Daegu, Korea
| | - Chi-Yeol Yoo
- Department of Food Science and Biotechnology, Graduate School, Kyungpook National University, Daegu, Korea
| | - Sang-Han Lee
- Department of Food Science and Biotechnology, Graduate School, Kyungpook National University, Daegu, Korea
- Food and Bio-Industry Research Institute, Kyungpook National University, Daegu, Korea
- CONTACT Sang-Han LeeDepartment of Food Science and Biotechnology, Kyungpook National University, 80 DaeHak-ro, Buk-gu, Daegu 41566, Korea
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Gastroprotective Effect of Geopropolis from Melipona scutellaris Is Dependent on Production of Nitric Oxide and Prostaglandin. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:459846. [PMID: 25949263 PMCID: PMC4408637 DOI: 10.1155/2015/459846] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/18/2015] [Accepted: 03/18/2015] [Indexed: 12/15/2022]
Abstract
The aim of this study was to evaluate the gastroprotective activity of ethanolic extract of geopropolis (EEGP) from Melipona scutellaris and to investigate the possible mechanisms of action. The gastroprotective activity of the EEGP was evaluated using model ulcer induced by ethanol. To elucidate the possible mechanisms of action, we investigated the involvement of the nonprotein sulfhydryl (NP-SH) groups, nitric oxide and prostaglandins. In addition, the antisecretory activity of EEGP was also evaluated by pylorus ligated model. The EEGP orally administrated (300 mg/kg) reduced the ulcerative lesions induced by the ethanol (P < 0.05). Regarding the mechanism of action, the prior administration of nitric oxide and prostaglandins antagonists suppressed the activity of gastroprotective EEGP (P < 0.05). On the other hand the gastroprotective activity of EEGP was kept in the group pretreated with the antagonist of the NP-SH groups; furthermore the antisecretory activity was not significant (P > 0.05). These results support the alternative medicine use of geopropolis as gastroprotective and the activities observed show to be related to nitric oxide and prostaglandins production.
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Şennur K, Kadri B, Zeki K, Berna E, Hilmi I. Effects of Ethanol Induced Gastric Lesions in Sialoadenectomized Rat: An Ultrastructural Study. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2005.10817166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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17
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Rajasekaran A, Sivakumar V, Darlinquine S. Role of Blepharis maderaspatensis and Ammannia baccifera plant extracts on in vitro oxygen radical scavenging, secretion of gastric fluid and gastroprotection on ulcer induced rats. PHARMACEUTICAL BIOLOGY 2012; 50:1085-1095. [PMID: 22881139 DOI: 10.3109/13880209.2012.657305] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
CONTEXT Blepharis maderaspatensis L. Roth (BM) (Acanthaceae) and Ammannia baccifera L. (AB) (Lythraceae) are used in folk medicine for various stomach disorders. OBJECTIVE The chloroform and ethanol extracts of both plants were evaluated for antioxidant, gastric antisecretory, and gastroprotective properties. METHODS Antioxidant properties of the extracts were evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay and nitric oxide (NO) scavenging assay. The gastric antisecretory properties of the extracts were assessed, at a dose of 100 and 200 mg/kg, using aspirin-pylorus ligation induced gastric ulcer models and the gastroprotective activity of the extracts was assessed, at a dose of 100 and 200 mg/kg, using HCl-ethanol induced ulcer models in rats. RESULTS AND DISCUSSION Ethanol extract of BM (EBM) possessed good antioxidant property with IC₅₀ values of 37.4 and 44.1 µg/mL in DPPH and NO scavenging assays respectively, where 25-250 µg/mL concentration in DPPH assay and 30-300 µg/mL concentration in NO scavenging assay were used. Ethanol extract of AB (EAB) at a dose of 200 mg/kg reduced the free acidity to 142.66 mEq/L and total acidity to 451.22 mEq/L. It reduced the gastric secretion with increase in pH from 2.2 to 3.15. Possessing good antisecretory activity, it also reduced the ulcer by 92.2% in aspirin and pylorus ligation induced gastric ulcer models. EAB increased the mucus secretion and adherent mucus in the tissues with a 71.43% reduction of ulcerin HCl-ethanol induced ulcer models, at a dose of 200 mg/kg. This activity can be attributed to the various flavonoids like rutin and kaempferol-3-O-β-glucopyranoside, and the phytosterol, β-sitosterol-3-O-β-glucopyranoside, and phenolics present in the extracts. CONCLUSION EBM possessed significant antioxidant property while EAB possessed good antisecretory and gastroprotective activity.
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Bhagawati S, Sanjay S. Investigations on gastroprotective effect of citalopram, an antidepressant drug against stress and pyloric ligation induced ulcers. Pharmacol Rep 2011; 63:1413-26. [DOI: 10.1016/s1734-1140(11)70705-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 06/28/2011] [Indexed: 10/25/2022]
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Saxena B, Krishnamurthy S, Singh S. Gastroprotective potential of risperidone, an atypical antipsychotic, against stress and pyloric ligation induced gastric lesions. Chem Biol Interact 2011; 190:155-64. [DOI: 10.1016/j.cbi.2011.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Revised: 02/01/2011] [Accepted: 02/04/2011] [Indexed: 12/29/2022]
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Antonisamy P, Kannan P, Ignacimuthu S. Anti-diarrhoeal and ulcer-protective effects of violacein isolated from Chromobacterium violaceum in Wistar rats. Fundam Clin Pharmacol 2009; 23:483-90. [PMID: 19709325 DOI: 10.1111/j.1472-8206.2009.00701.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Violacein was isolated from Chromobacterium violaceum, a soil Gram-negative bacterium collected from the forest water body soil sample from Kolli Hills of Tamil Nadu, India. In the present study the anti-diarrhoeal and ulcer-protective properties of violacein were investigated in Wistar rats using castor oil, magnesium sulphate and ethanol. The intestinal transit in rats was significantly (P < 0.001) reduced and gastric emptying was delayed; 40 mg/kg of violacein elicited a greater anti-motility activity than 0.1 mg/kg of atropine. Violacein exhibited ulcer-protective properties against ethanol-induced ulceration in rats with maximal anti-ulcer activity at 40 mg/kg. Violacein also exerted significant anti-enteropooling effects, causing a dose-related inhibitory effect on castor oil-induced enteropooling in rats. A profound anti-diarrhoeal activity was observed when violacein was tested in diarrhoeic rats. The frequencies of defaecation as well as the wetness of the faecal droppings were significantly reduced. Furthermore, violacein (40 mg/kg) produced 87.84% inhibition of castor oil-induced diarrhoea in rats. The results suggested that violacein can be used for the treatment of diarrhoeal and ulcer-related diseases.
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Affiliation(s)
- Paulrayer Antonisamy
- Division of Ethnopharmacology, Entomology Research Institute, Loyola College, Chennai 600 034, Tamil Nadu, India
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Arisawa T, Shibata T, Kamiya Y, Nagasaka M, Nakamura M, Fujita H, Hasegawa S, Harata M, Nakamura M, Mizuno T, Tahara T, Ohta Y, Nakano H. EFFECTS OF SUCRALFATE, CIMETIDINE AND RABEPRAZOLE ON MUCOSAL HYDROXYPROLINE CONTENT IN HEALING OF ETHANOL-HCL-INDUCED GASTRIC LESIONS. Clin Exp Pharmacol Physiol 2006; 33:628-32. [PMID: 16789931 DOI: 10.1111/j.1440-1681.2006.04418.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
1. No general consensus has been reached on the treatment of acute gastric lesions. The aims of the present study were to clarify the effects of sucralfate, cimetidine and rabeprazole monotherapies and combination therapies on acute gastric lesions from the viewpoint of connective tissue regeneration. 2. Gastric lesions were experimentally created by the oral administration of 50% ethanol-0.15 mol/L HCl to rats. After 30 min, the anti-ulcer agents sucralfate (100 mg/kg), cimetidine (20 mg/kg) and rabeprazole (2 mg/kg) were administered separately or in combination and the stomach was excised at different times to measure the level of hydroxyproline in the gastric mucosa and determine lesion index. Immunostaining against prolylhydroxylase was performed on some specimens. 3. In the control group, lesion index decreased linearly from 30 min after ethanol-HCl administration and the level of mucosal hydroxyproline peaked between 2 and 4 h later. Although sucralfate significantly promoted lesion healing, it had no effect on mucosal hydroxyproline level. Cimetidine suppressed increases in mucosal hydroxyproline and prolonged lesion healing, but these findings were reversed by combining cimetidine and sucralfate. Rabeprazole had no significant effect on lesion healing, but promoted lesion healing in combination with sucralfate. Immunohistochemical analysis showed that prolylhydroxylase was expressed in spindle cells that lined the glandular cells in a boundary area between normal and injured tissues. 4. Under conditions in which the effects of intragastric pH are minimal, sucralfate is superior to antisecretory agents in promoting the healing of acute gastric lesions.
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Affiliation(s)
- Tomiyasu Arisawa
- Department of Gatroenterology, Fujita Health University, School of Medicine, Kutsukake-cho, Toyoake, Japan.
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Adeniyi B, . RO, . SO. Antibacterial and Gastroprotective Properties of Eucalyptus torelliana [Myrtaceae] Crude Extracts. INT J PHARMACOL 2006. [DOI: 10.3923/ijp.2006.362.365] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Jainu M, Devi CSS. Antiulcerogenic and ulcer healing effects of Solanum nigrum (L.) on experimental ulcer models: possible mechanism for the inhibition of acid formation. JOURNAL OF ETHNOPHARMACOLOGY 2006; 104:156-63. [PMID: 16202548 DOI: 10.1016/j.jep.2005.08.064] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2005] [Revised: 07/10/2005] [Accepted: 08/27/2005] [Indexed: 05/04/2023]
Abstract
Solanum nigrum, an herbal plant which is recommended in ayurveda for the management of gastric ulcers. Therefore, the purpose of the study was to investigate the antiulcer effect of Solanum nigrum fruits extract (SNE) on cold restraint stress (CRU), indomethacin (IND), pyloric ligation (PL) and ethanol (EtOH) induced gastric ulcer models and ulcer healing activity on acetic acid induced ulcer model in rats. The treatment with SNE at higher dose significantly inhibited the gastric lesions induced by CRU (76.6%), IND (73.8%), PL (80.1%) and EtOH (70.6%), respectively, with equal or higher potency than omeprazole. SNE showed concomitant attenuation of gastric secretory volume, acidity and pepsin secretion in ulcerated rats. In addition, SNE (200 and 400mg/kgb.w.) accelerated the healing of acetic acid induced ulcers after the treatment for 7 days. Further, to ascertain the antisecretory action, the effects of SNE on H(+)K(+)ATPase activity and plasma concentration of gastrin hormone in ulcerated rats were determined. SNE significantly inhibits H(+)K(+)ATPase activity and decreases the gastrin secretion in EtOH-induced ulcer model. The severity of the reaction of ulcerogen and the reduction of ulcer size by SNE was evident by histological findings. Toxicity studies of SNE have also been carried out for its safety evaluation. SNE, thus, offers antiulcer activity by blocking acid secretion through inhibition of H(+)K(+)ATPase and decrease of gastrin secretion. These results further suggest that SNE was found to possess antiulcerogenic as well as ulcer healing properties, which might also be due to its antisecretory activity.
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Affiliation(s)
- Mallika Jainu
- Department of Biochemistry, University of Madras, Guindy Campus, Chennai 600025, Tamil Nadu, India.
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Al-Qarawi AA, Abdel-Rahman H, Ali BH, Mousa HM, El-Mougy SA. The ameliorative effect of dates (Phoenix dactylifera L.) on ethanol-induced gastric ulcer in rats. JOURNAL OF ETHNOPHARMACOLOGY 2005; 98:313-317. [PMID: 15814265 DOI: 10.1016/j.jep.2005.01.023] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2004] [Revised: 01/17/2005] [Accepted: 01/17/2005] [Indexed: 05/24/2023]
Abstract
The present work aimed at testing, in a rat model of ethanol-induced gastric ulceration, a local folk medicinal claim that dates are beneficial in gastric ulcers in humans. Aqueous and ethanolic undialyzed and dialyzed extracts from date fruit and pits were given orally to rats at a dose of 4 ml/kg for 14 consecutive days. On the last day of treatment, rats were fasted for 24 h, and were then given ethanol, 80% (1 ml/rat) by gastric intubation to induce gastric ulcer. Rats were killed after 1 h of ethanol exposure, and the incidence and severity of the ulceration were estimated, as well as the concentrations of gastrin in plasma, and histamine and mucus in the gastric mucosa. A single group of rats that were fasted for 24 h, was administered orally with lansoprazole (30 mg/kg), and was given 80% ethanol as above, 8 h thereafter, served as a positive control. The results indicated that the aqueous and ethanolic extracts of the date fruit and, to a lesser extent, date pits, were effective in ameliorating the severity of gastric ulceration and mitigating the ethanol-induced increase in histamine and gastrin concentrations, and the decrease in mucin gastric levels. The ethanolic undialyzed extract was more effective than the rest of the other extracts used. It is postulated that the basis of the gastroprotective action of date extracts may be multi-factorial, and may include an anti-oxidant action.
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Affiliation(s)
- A A Al-Qarawi
- Department of Veterinary Medicine, Faculty of Agriculture and Veterinary Medicine, King Saud University, Al-Gaseem Branch, P.O. 10158, Buraydah, Al-Gaseem 81999, Saudi Arabia
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Aniagu SO, Binda LG, Nwinyi FC, Orisadipe A, Amos S, Wambebe C, Gamaniel K. Anti-diarrhoeal and ulcer-protective effects of the aqueous root extract of Guiera senegalensis in rodents. JOURNAL OF ETHNOPHARMACOLOGY 2005; 97:549-554. [PMID: 15740894 DOI: 10.1016/j.jep.2005.01.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2003] [Revised: 12/02/2004] [Accepted: 01/05/2005] [Indexed: 05/24/2023]
Abstract
The anti-diarrhoeal and ulcer-protective properties of the aqueous root extract of Guiera senegalensis, a popular herbal traditional medicine in Nigeria were investigated in rats and mice. Acute toxicity studies were also carried out. The intestinal transit in mice was significantly (P < 0.05) reduced and gastric emptying delayed. One hundred and Two hundred milligrams per kilogram (p.o.) of the extract elicited a greater anti-motility activity than 0.1 mg/kg of atropine. The extract exhibited ulcer-protective properties against ethanol-induced ulceration in rats with maximal anti-ulcer activity recorded at 100 mg/kg. Guiera senegalensis also exerted significant anti-enteropooling effects causing a dose-related inhibitory effect on castor oil-induced enteropooling in rats. A profound anti-diarrhoeal activity was observed when Guiera senegalensis was tested in diarrhoeic mice. The frequency of defaecation as well as the wetness of the faecal droppings was significantly reduced. Furthermore, the extract produced 100% inhibition of castor oil-induced diarrhoea in mice. The oral LD50 values obtained were > 5000 mg/kg in both mice and rats. The results support the folkloric applications of Guiera senegalensis for the treatment of diarrhoea and ulcer in Nigerian herbal traditional medicine.
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Affiliation(s)
- S O Aniagu
- Department of Pharmacology and Toxicology, National Institute for Pharmaceutical Research and Development, Idu Industrial Area, P.M.B. 21, Garki, Abuja, Nigeria.
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Sen T, Abdulsalam CA, Pal S, Sen S, Karmakar S, Saravanan KS, Chaudhuri AKN. Effect of amitriptyline on gastric ulceration. Fundam Clin Pharmacol 2002; 16:311-5. [PMID: 12570020 DOI: 10.1046/j.1472-8206.2002.00092.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Amitriptyline significantly inhibited alcohol, aspirin, indomethacin and cold-restraint stress-induced ulceration. Secretory studies conducted in pyloric-ligated rats revealed that the drug, at the doses employed, significantly reduced total acidity and protein content. However, significant reductions of the gastric volume were only observed at the highest dose of the drug. In another set of experiments, when 50% alcohol (v/v) was administered to the pyloric-ligated rats pretreated with amitriptyline, it was observed that the drug significantly reduced the pH, total acidity and protein content.
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Affiliation(s)
- T Sen
- Division of Pharmacology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, India.
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Zhu M, Lew KT, Leung PL. Protective effect of a plant formula on ethanol-induced gastric lesions in rats. Phytother Res 2002; 16:276-80. [PMID: 12164277 DOI: 10.1002/ptr.839] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A plant formula and its five components were evaluated independently for their gastric protective effect against ethanol-induced stomach lesions in rats. Aqueous extracts of the plant formula (0.25-2g crude drug/kg orally) and its individual components (at the same dose) all showed significant stomach protective effects dose dependently. However, when these extracts were given to rats at a dose of 0.25 g/kg, the five single-herb preparations did not show any activity, but the formula-extract still exhibited a strong protective effect. These findings suggest the presence of a synergistic effect among the plant components. Chemical examination of the extracts indicated that the major ingredients of the five plants were essential oils, terpenoids, flavonoids, glycosides and saccharides and these may contribute to the stomach protective activity observed.
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Affiliation(s)
- Min Zhu
- Department of Pharmacy, The Chinese University of Hong Kong, Shatin, New Territories.
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Rodríguez JA, Bustamante C, Astudillo L, Schmeda-Hirschmann G. Gastroprotective activity of solidagenone on experimentally-induced gastric lesions in rats. J Pharm Pharmacol 2002; 54:399-404. [PMID: 11902806 DOI: 10.1211/0022357021778466] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The gastroprotective effect of the labdane diterpene solidagenone was assessed on gastric ulcer in rats. The effect of a single oral dose of the compound was evaluated at 50, 100 and 200 mg kg(-1) in the following test systems: pylorus ligature (Shay), aspirin- and ethanol-induced gastric ulcers. In pylorus-ligated rats (Shay model), the ulcerative index decreased by 37% with solidagenone pre-treatment at the three assayed doses. The effect of a single oral dose of 50 mg kg(-1) solidagenone was comparable with ranitidine at the same concentration and similar to higher doses of the compound. A significant effect (P < 0.001) at 100 and 200 mg kg(-1) was observed in the aspirin-induced ulcer model. At both doses, reduction in the number of lesions was approximately 50% compared with controls. The effect was comparable with the reference compound ranitidine (50 mg kg(-1)). With the ethanol-induced gastric ulcers, the effect of solidagenone at 100 and 200 mg kg(-1) was similar to a single oral dose of 20 mg kg(-1) omeprazole with a 50% reduction of the mean number of lesions compared with controls. In acute toxicity tests on mice, intraperitoneal administration of solidagenone showed no toxicity at doses up to 600 mg kg(-1). This is the first report on the gastroprotective activity of a labdane diterpene.
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Affiliation(s)
- Jaime A Rodríguez
- Instituto de Biología Vegetal y Biotecnología, Universidad de Talca, Chile
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29
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Capasso R, Pinto L, Vuotto ML, Di Carlo G. Preventive effect of eugenol on PAF and ethanol-induced gastric mucosal damage. Fitoterapia 2000; 71 Suppl 1:S131-7. [PMID: 10930724 DOI: 10.1016/s0367-326x(00)00188-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
This study examines the anti-ulcerogenic activity of eugenol, a natural compound obtained from many natural sources. Gastric ulcers, induced by administration of two ulcerogenic agents, i.e. platelet activating factor (PAF) and ethanol, were dose-dependently and significantly reduced by eugenol (10-100 mg/kg, p.o.) pre-treatment. Eugenol was able to reduce not only the number of ulcers but also the gravity of lesions.
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Affiliation(s)
- R Capasso
- Department of Pharmaceutical Sciences, Via Ponte Don Melillo, 84084, Fisciano, Salerno, Italy
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30
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Sen T, Abdul Salam CA, Pal S, Sen S, Nag Chaudhuri AK. Effect of dothiepin on gastric ulceration mediated by lipid derived eicosanoids. Life Sci 2000; 66:PL325-30. [PMID: 10855953 DOI: 10.1016/s0024-3205(00)00561-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Dothiepin, a tricyclic antidepressant, significantly inhibited the development of gastric ulcers induced by alcohol, aspirin, indomethacin and Shay's pyloric ligation. Antisecretory studies in pyloric ligated rats revealed that the drug at a dose of 100 mg/kg significantly reduced total acidity, gastric output and protein content. In another set of experiments, dothiepin significantly reduced gastric output, total acidity and protein content in pyloric ligated rats which received 50% alcohol (v/v) 30 minutes after the administration of dothiepin.
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Affiliation(s)
- T Sen
- Department of Pharmaceutical Technology, Jadavpur University, Calcutta, India
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Suffredini IB, Bacchi EM, Sertié JA. Antiulcer action of Microgramma squamulosa (Kaulf.) Sota. JOURNAL OF ETHNOPHARMACOLOGY 1999; 65:217-223. [PMID: 10404419 DOI: 10.1016/s0378-8741(98)00211-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Microgramma squamulosa (Kaulf.) Sota (Polypodiaceae) is commonly used as an antiulcer agent in the state of São Paulo, mainly in the upper land. The present work aims to study the antiulcer action of the crude extract of the plant rhizome and its toxicity. The effective dose was determined through acute ulcer induction test by stress. Using a determined dose, we performed a test against ulcer through acute induction by ethanol and hydrochloric acid, using cimetidine and misoprostol as reference drugs in both tests. The same extract, its ethanol and ethanol + water (1:1) fractions and the reference drug cimetidine were tested through subchronic induction test with acetic acid. The subchronic toxicity test was performed using a dose of 800 mg/kg of the crude extract, orally administered for 30 days. Finally the extracts and fractions were analysed in order to determine the main chemical groups of substances.
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Affiliation(s)
- I B Suffredini
- Faculdade de Ciências Farmacêuticas da Universidade de São Paulo, Departamento de Farmácia, SP, Brasil
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Guidobono F, Pagani F, Ticozzi C, Sibilia V, Netti C. Investigation on the mechanisms involved in the central protective effect of amylin on gastric ulcers in rats. Br J Pharmacol 1998; 125:23-8. [PMID: 9776339 PMCID: PMC1565590 DOI: 10.1038/sj.bjp.0702029] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
1. The mechanisms involved in the protective effect of amylin (administered into the brain ventricle, i.c.v.) on gastric ulcers induced by the oral administration of ethanol 50% (EtOH, 2 ml/rat) or indomethacin (indomethacin, 20 mg kg(-1), at a dosing volume of 5 ml) were investigated in rats. 2. The possible involvement of endogenous nitric oxide (NO) in the beneficial effect of amylin against EtOH-induced ulcers was examined. The inhibitor of NO-synthesis, NG-nitro-L-arginine methyl ester (L-NAME, 70 mg kg(-1), s.c.) was injected 30 min before amylin (2.2 microg/rat, i.c.v.) followed by EtOH after a further 30 min. Rats were sacrificed 1 h after EtOH. L-NAME completely removed the protective effect of amylin. 3. The interaction between amylin and gastric nonprotein sulfhydryl groups was studied. The rats were treated with N-ethyl-maleimide (NEM, 25 mg kg(-1), s.c.) 30 min before amylin (2.2 microg/rat, i.c.v.) followed by EtOH 30 min after or by indomethacin 5 min after amylin. Rats were sacrificed 1 h or 6 h respectively after EtOH or indomethacin. NEM counteracted the protective effect of amylin against EtOH-induced ulcers but not against those provoked by indomethacin. 4. To determine whether amylin was able to promote ulcer healing, the peptide was injected 5 min after EtOH or 1 h after indomethacin. In the case of EtOH, the beneficial effect of amylin was lost whereas it was still effective on indomethacin-induced ulcers. 5. The results indicate that: the mechanisms involved in the antiulcer effects of amylin are different in these two types of gastric lesions probably because of the different etiopathology of various types of ulcers. Endogenous NO and nonprotein sulfhydryl groups are involved in the mucosal protective effects of amylin on EtOH and not on indomethacin-induced ulcers. Furthermore the effectiveness of amylin against indomethacin-induced lesions when administered after the ulcerogenic process has started suggests that amylin is involved not only in the protection but also in the healing mechanisms in this type of ulcer.
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Affiliation(s)
- F Guidobono
- Department of Pharmacology, Chemotherapy and Medical Toxicology, University of Milan, Italy
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Motilva V, López A, Martín MJ, La Casa C, Alarcón de la Lastra C. Cytoprotective activity of cisapride on experimental gastric mucosal lesions induced by ethanol. Role of endogenous prostaglandins. PROSTAGLANDINS 1996; 52:63-74. [PMID: 8875638 DOI: 10.1016/0090-6980(96)00052-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The antiulcer effects and protective mechanisms of cisapride, a prokinetic benzamide agonist of 5-HT3 and antagonist of 5-HT4 receptors, were investigated in gastric mucosal injury induced by pretreatment with 50% v/v ethanol in rats. The duration of the protective effect was also studied and the results were compared with those of 5-HT. 240 min after administration of cisapride (10, 25 and 50 mg/kg) the total area of gastric lesions decreased significantly, in macroscopical and histological evaluations, and the mucus, hexosamine, and sulphated glycoprotein content were significantly increased. Indomethacin partially reversed cisapride protection suggesting that the beneficial antiulcer effects of this drug could be mediated in part by prostaglandins. This study confirms that this benzamide, in this experimental model, enhances gastric PGE2 production. We also investigated the time course of action of 5-HT, 30-240 min before ethanol administration, and our study not only demonstrates the ulcerogenic action of the amine (30 min of pretreatment) but also its protective nature, shown macroscopic and microscopically, after 240 min of its administration, without any effect on PGs production. These findings suggest a new gastroprotective feature of cisapride partly explained through a prostaglandin-dependent mechanism and possibly independent of its 5-HT activity.
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Affiliation(s)
- V Motilva
- Laboratorio de Farmacología, Facultad de Farmacia, Universidad de Sevilla, Spain
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Lozeva V, Marazova K, Belcheva A. Gastric histamine content and ulcer formation in rats with ethanol-induced injury. Effects of cinnarizine and flunarizine. AGENTS AND ACTIONS 1994; 41 Spec No:C91-2. [PMID: 7976817 DOI: 10.1007/bf02007781] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The effects of the calcium antagonists cinnarizine and flunarizine on gastric histamine content and ulcer formation in rats with ethanol-induced injury were studied. Gastric ulcers were inflicted by oral application of 50% or 100% ethanol solution. Cinnarizine (20 mg/kg), flunarizine (10 mg/kg) and cimetidine (100 mg/kg) were administered orally 1 h before ethanol. Histamine was assayed fluorometrically. No effect of the tested drugs on 50% ethanol-induced gastric damage was observed. Cinnarizine and flunarizine inhibited 100% ethanol-induced lesion formation by 71% (p < 0.01) and 20% (p > 0.05), respectively. The inhibition exerted by cimetidine was 54% (p < 0.05). Gastric histamine content was not affected by 50% ethanol, while 100% ethanol decreased it two-fold. None of the tested drugs induced significant changes in gastric histamine levels. No correlation was obtained between the ulceroprotective effect of the used calcium antagonists and the gastric histamine content in ethanol-induced injury.
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Affiliation(s)
- V Lozeva
- Department of Pharmacology, Medical University of Varna, Bulgaria
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Abstract
The pathogenetic mechanisms of different types of peptic ulcer are still unclear. Extensive investigations have been focused on the identification of potential endogenous ulcerogenic mediators in animals and men. These studies are important in the development of a better therapeutic agent, either to prevent or to cure peptic ulcer in humans. Several endogenous substances have been identified and are reported to be involved in the production of gastrointestinal lesions in animals. Also these substances were increased during inflammatory responses and their actions were reported as vascular dependent and possibly free radicals related. Reports related to the types of these mediators have been extensive. The more important ones include some of the lipid metabolites, neuropeptides, biogenic amines, and also Helicobacter pylori and reactive free radicals. The present study summarizes the ulcerogenic mechanisms of these substances and the types of ulcer involved. More current information may enable us to understand better the etiology of peptic ulcer and possibly its prevention and cure in man. Any particular types of ulceration will not be specifically discussed in this article, because they have been extensively studied and reviewed.
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Affiliation(s)
- C H Cho
- Department of Pharmacology, Faculty of Medicine, University of Hong Kong
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Das D, Banerjee RK. Effect of stress on the antioxidant enzymes and gastric ulceration. Mol Cell Biochem 1993; 125:115-25. [PMID: 8283967 DOI: 10.1007/bf00936440] [Citation(s) in RCA: 148] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The effect of cold-restraint stress on the antioxidant enzymes of the rat gastric mucosa was studied with a view to finding out their role in stress induced gastric ulceration. Histological examination revealed stress induced extensive damage of the surface epithelial cell with lesions extending up to submucosa in some cases. Stress causes time-dependent increase in histamine and pepsin content but decrease in acid content of the gastric fluid with the progress of ulceration (ulcer index) for two hours. The tissue lipid peroxidation was significantly increased as evidenced by accumulation of malondialdehyde. Since lipid peroxidation results from the generation of reactive oxygen species, stress effect was studied on some antioxidant enzymes such as superoxide dismutase, peroxidases and prostaglandin synthetase as a function of time. The time dependent increase in stress ulcer correlates well with the concomitant increase in superoxide dismutase activity and decrease in peroxidase and prostaglandin synthetase activity. This creates a favourable condition for accumulation of endogenous H2O2 and more reactive hydroxyl radical (OH.). Administration of antioxidants such as reduced glutathione or sodium benzoate prior to stress causes significant decrease in ulcer index and lipid peroxidation and protection of gastric peroxidase activity suggesting the involvement of reactive oxygen species in stress induced gastric ulceration. This is supported by the in vitro observation that OH. can also inactivate peroxidase and induce lipid peroxidation. As prostaglandin is known to offer cytoprotection, stress-induced loss of prostaglandin synthetase activity appears to aggravate the oxidative damage caused by reactive oxygen species.
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Affiliation(s)
- D Das
- Department of Physiology, Indian Institute of Chemical Biology, Calcutta
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