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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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El-Gendy ZA, Taher RF, Elgamal AM, Serag A, Hassan A, Jaleel GAA, Farag MA, Elshamy AI. Metabolites Profiling and Bioassays Reveal Bassia indica Ethanol Extract Protective Effect against Stomach Ulcers Development via HMGB1/TLR-4/NF-κB Pathway. Antioxidants (Basel) 2023; 12:1263. [PMID: 37371993 DOI: 10.3390/antiox12061263] [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: 05/13/2023] [Revised: 06/01/2023] [Accepted: 06/03/2023] [Indexed: 06/29/2023] Open
Abstract
Clinical manifestation of gastric ulcers is frequent, in addition to their costly drug regimens, warranting the development of novel drugs at lower costs. Although Bassia indica is well characterized for its anti-inflammatory and antioxidant potential, capacity of its ethanol extract (BIEE) to prevent stomach ulcers' progression has not been reported. A nuclear protein termed high-mobility group box 1 (HMGB1) plays a key role in the formation of stomach ulcers by triggering a number of inflammatory responses. The main purpose of the current investigation was to evaluate the in vivo anti-inflammatory and anti-ulcerogenic capabilities of BIEE against ethanol-induced gastric ulcers in rats via the HMGB1/TLR-4/NF-B signaling pathway. HMGB1 and Nuclear factor kappa (NF-B) expression, IL-1β and Nrf2 contents showed an increase along with ulcer development, concurrent with an increase in immunohistochemical TLR-4 level. In contrast, pre-treatment with BIEE significantly reduced HMGB1 and Nuclear factor kappa (NF-B) expression levels, IL-1β and Nrf2 contents and ulcer index value. Such protective action was further confirmed based on histological and immunohistochemical TLR-4 assays. Untargeted analysis via UPLC-ESI-Qtof-MS has allowed for the comprehensive characterization of 40 metabolites in BIEE mostly belonged to two main chemical classes, viz., flavonoids and lipids. These key metabolites, particularly flavonoids, suggesting a mediation for the anti-inflammatory and anti-ulcerogenic properties of BIEE, pose it as a promising natural drug regimen for treatment of stomach ulcers.
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Affiliation(s)
- Zeinab A El-Gendy
- Department of Pharmacology, Medical Research and Clinical Studies Institute, National Research Centre, 33 El Bohouth St., Dokki, Giza 12622, Egypt
| | - Rehab F Taher
- Department of Natural Compounds Chemistry, National Research Center, 33 El Bohouth St., Dokki, Giza 12622, Egypt
| | - Abdelbaset M Elgamal
- Department of Chemistry of Microbial and Natural Products, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt
| | - Ahmed Serag
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Al-Azhar University, Cairo 11751, Egypt
| | - Azza Hassan
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza 12211, Egypt
| | - Gehad A Abdel Jaleel
- Department of Pharmacology, Medical Research and Clinical Studies Institute, National Research Centre, 33 El Bohouth St., Dokki, Giza 12622, Egypt
| | - Mohamed A Farag
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Kasr el Aini St., Cairo 11562, Egypt
| | - Abdelsamed I Elshamy
- Department of Natural Compounds Chemistry, National Research Center, 33 El Bohouth St., Dokki, Giza 12622, Egypt
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Figueiredo FDF, Damazo AS, Arunachalam K, Silva MJD, Pavan E, Lima JCDS, Martins DTDO. Evaluation of the gastroprotective and ulcer healing properties by Fridericia chica (Bonpl.) L.G. Lohmann hydroethanolic extract of leaves. JOURNAL OF ETHNOPHARMACOLOGY 2023; 309:116338. [PMID: 36870462 DOI: 10.1016/j.jep.2023.116338] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 02/23/2023] [Accepted: 02/24/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Fridericia chica (Bonpl.) L.G. Lohmann (Bignoniaceae), is a climber native to Brazil, found in all Brazilian biomes. It is mostly known in Brazil as "carajiru," and home medicines made from the leaves have been used to cure disorders including stomach ulcers and other gastrointestinal disorders. AIM OF THE STUDY The objective of the study was to investigate the F. chica hydroethanolic extract of leaves (HEFc) preventative and curative antiulcer gastrointestinal efficacy as well as the mechanisms of action using in vivo rodent models. MATERIALS AND METHODS F. chica was collected in the municipality of Juína, Mato Grosso, and its leaves were used to prepare the extract by maceration technique (70% hydroethanol in the 1:10 ratio, w/v) to obtain the HEFc. The chromatographic analysis of HEFc was carried out by High Performance Liquid Chromatography-Photo Diode Array-Electrospray Ionization-Mass Spectrometry (HPLC-PDA-ESI-MS)- LCQ Fleet™ system. To determine the potential antiulcer potential of HEFc (1, 5 and 20 mg/kg, p.o.), the gastroprotective activity was assessed in various animal models of stomach ulcers caused by acidified ethanol, water constraint stress, indomethacin, (acute), and acid acetic (chronic). Additionally, the prokinetic properties of the HEFC were assessed in mice. The gastroprotective underlying mechanisms were evaluated by the histopathological analysis and determination of gastric secretion (volume, free and total acidity), gastric barrier mucus, activation of PGs, NO, K +ATP channels, α2-adrenoceptor, antioxidant activity (GSH, MPO and MDA), NO and mucosal cytokines (TNF-α, IL-1β, and IL-10) levels. RESULTS The chemical composition of HEFc was analyzed and apigenin, scutellarin, and carajurone were identified. HEFc (1, 5 and 20 mg/kg) showed effect against acute ulcers induced by HCl/EtOH with a reduction in the ulcerated area of 64.41% (p < 0.001), 54.23% (p < 0.01), 38.71% (p < 0.01), respectively. In the indomethacin experiment, there was no change in the doses tested, whereas in the water immersion restraint stress ulcer there was a reduction of lesions at doses of 1, 5, and 20 mg/kg by 80.34% (p < 0.001), 68.46% (p < 0.01) and 52.04% (p < 0.01). HEFc increased the mucus production at doses of 1 and 20 mg/kg in 28.14% (p < 0.05) and 38.36% (p < 0.01), respectively. In the pyloric ligation-induced model of gastric ulceration, the HEFc decreased the total acidity in all doses by 54.23%, 65.08%, and 44.40% (p < 0.05) and gastric secretory volume in 38.47% at dose of 1 mg/kg (p < 0,05) and increased the free acidity at the dose of 5 mg/kg by 11.86% (p < 0.05). The administration of EHFc (1 mg/kg) showed a gastroprotective effect possibly by stimulating the release of prostaglandins and activating K+ATP channels and α2-adrenoreceptors. Also, the gastroprotective effect of HEFc involved an increase in CAT and GSH activities, and a reduction in MPO activity and MDA levels. In the chronic gastric ulcer model, the HEFc (1, 5 and 20 mg/kg) decreased the ulcerated area significantly (p < 0.001) at all doses by 71.37%, 91.00%, and 93.46%, respectively. In the histological analysis, HEFc promoted the healing of gastric lesions by stimulating the formation of granulation tissue and consequently epithelialization. On the other hand, regarding the effect of HEFc on gastric emptying and intestinal transit, it was observed that the extract did not alter gastric emptying, but there was an increase in intestinal transit at the dose of 1 mg/kg (p < 0.01). CONCLUSION These outcomes confirmed the advantages of Fridericia chica leaves for the treatment of stomach ulcers, which are well-known. HEFc was discovered to have antiulcer characteristics through multitarget pathways, which might be related to an increase in stomach defense mechanisms and a decrease in defensive factor. HEFc can be regarded as a potential new antiulcer herbal remedy because of its antiulcer properties, which may be attributed to the mixture of flavonoids, apigenin, scutellarin and carajurone.
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Affiliation(s)
- Fabiana de Freitas Figueiredo
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil.
| | - Amilcar Sabino Damazo
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil; Área de Histologia e Biologia Celular, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil.
| | - Karuppusamy Arunachalam
- Centro de Estudos em Células Tronco, Terapia Celular e Genética Toxicológica (CeTroGen), Universidade Federal de Mato Grosso do Sul (UFMS), Campo Grande, 79070-900, MS, Brazil; Programa de Pós-graduação em Saúde e Desenvolvimento da Região Centro-Oeste, Faculdade de Medicina Dr. Hélio Mandetta (FAMED), Universidade Federal de Mato Grosso do Sul (UFMS), Campo Grande, 79070-900, MS, Brazil.
| | - Marcelo José Dias Silva
- Universidade Federal de Alfenas (UNIFAL-MG), Laboratório de Plantas Medicinais e Fitoterápicos, Rua Gabriel Monteiro da Silva, 700. Centro Alfenas, MG, Brazil.
| | - Eduarda Pavan
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil.
| | - Joaquim Corsino da Silva Lima
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil.
| | - Domingos Tabajara de Oliveira Martins
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil; Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil.
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El-shafey RS, Baloza SH, Mohammed LA, Nasr HE, Soliman MM, Ghamry HI, Elgendy SA. The ameliorative impacts of wheat germ oil against ethanol-induced gastric ulcers: involvement of anti-inflammatory, antiapoptotic, and antioxidant activities. Toxicol Res (Camb) 2022; 11:325-338. [PMID: 35510233 PMCID: PMC9052321 DOI: 10.1093/toxres/tfac012] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/21/2022] [Accepted: 03/01/2022] [Indexed: 03/08/2024] Open
Abstract
This study examined if wheat germ oil (WGO) has gastroprotective impacts against ethanol-induced gastric ulcer in rats. Rats were assigned into control, WGO, ethanol, omeprazole + ethanol, and WGO + ethanol. WGO prevented gastric ulceration and damage induced by ethanol, the same effect induced by omeprazole, a widely known medication used for gastric ulcer treatment. WGO reduced gastric ulcer index, nitric oxide, and malondialdehyde levels in the stomach. WGO boosted the expression of nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1), Bcl2, and the antioxidants. WGO showed inflammatory and anti-inflammatory impacts through the control of interleukin (IL)-1β, Tumor necrosis factor alpha (TNF-α), and IL-10 that were altered in ethanol-administered rats. Ethanol up-regulated caspase-3 and nuclear factor-kappa B (NF-kB) expression and showed histopathological changes such as necrosis and mucosal degeneration that were mitigated by pre-administration of WGO. Moreover, WGO decreased gastric immunoreactivity of NF-kB and increased transforming growth factor beta-1 (TGF-β1) that were associated with upregulation of Nrf2, heme oxygenase-1 (HO-1), and antioxidant expression and production. In conclusion, WGO reduced ethanol-induced stomach toxicity by regulating genes involved in oxidative stress, inflammation, and apoptotic/antiapoptotic pathways.
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Affiliation(s)
- Rabab Shaban El-shafey
- Department of Forensic Medicine & Clinical Toxicology, Faculty of Medicine, Benha University, Benha 13511, Egypt
| | - Samar H Baloza
- Genetic and Genetic Engineering, Animal Wealth Development Department, Faculty of Veterinary Medicine, Benha University, Benha 13736, Egypt
| | - Lina Abdelhady Mohammed
- Department of Medical Biochemistry and Molecular Biology, College of Medicine, Benha University, Benha 13511, Egypt
| | - Hend Elsayed Nasr
- Department of Medical Biochemistry and Molecular Biology, College of Medicine, Benha University, Benha 13511, Egypt
| | - Mohamed Mohamed Soliman
- Clinical Laboratory Sciences Department, Turabah University College, Taif University, PO Box 11099, Taif 21944, Taif, Saudi Arabia
| | - Heba I Ghamry
- Department of Home Economics, College of Home Economics, King Khalid University, P.O. Box 960, Abha,61421, Saudi Arabia
| | - Salwa A Elgendy
- Department of Pharmacology, Faculty of Medicine, Benha University, Benha 13511, Egypt
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Revenko O, Pavlovskiy Y, Savytska M, Yashchenko A, Kovalyshyn V, Chelpanova I, Varyvoda O, Zayachkivska O. Hydrogen Sulfide Prevents Mesenteric Adipose Tissue Damage, Endothelial Dysfunction, and Redox Imbalance From High Fructose Diet-Induced Injury in Aged Rats. Front Pharmacol 2021; 12:693100. [PMID: 34526894 PMCID: PMC8435624 DOI: 10.3389/fphar.2021.693100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/22/2021] [Indexed: 12/18/2022] Open
Abstract
A high fructose diet (HFD) and advanced age are key factors for the gradual loss of physiological integrity of adipose tissue. Endogenous hydrogen sulfide (H2S) has beneficial effects on cytoprotection and redox balance. But its interactive effects on age-related damage of mesenteric vessels and connective and adipose tissues (MA) during HFD which could be the base of the development of effective physiological-based therapeutic strategy are unknown. The aim of study was to investigate age- and HFD-induced mesenteric cellular changes and activities of enzymes in H2S synthesis and to test the effects of sodium hydrosulfide (NaHS) which is considered an H2S donor on them. Adult and aged male rats on a standard diet (SD) or 4-week HFD were exposed to acute water-immersion restraint stress (WIRS) for evaluation of mesenteric subcellular and cellular adaptive responses by electron microscopy. The effects of exogenous NaHS (5.6 mg/kg/day for 9 days) versus vehicle on mesentery changes were investigated. Serum glucose level, thiobarbituric acid reactive substances (TBARS), and activities of cystathionine γ-lyase (CSE) and cystathionine β-synthase (CBS), thiosulfate-dithiol sulfurtransferase (TST), and sulfite oxidase (SO) were examined by spectrophotometry. In both adult and aged SD groups, treatment with NaHS protected mesenteric cells after WIRS. In both groups, the treatment with NaHS also protected MA mitochondria, microvascular endothelial and sub-endothelial structures, and fibroblasts versus the vehicle-treated group that had signs of damage. HFD increased MA injury and mitochondrial changes in both aged and adult rats. HFD-associated malfunction is characterized by low activities of CSE, CBS, TST, SO, and increased TBARS. Finally, we demonstrated that pretreatment with NaHS inhibited MA and mitochondria alterations in aged rats exposed to HFD and WIRS, lowered TBARS, and enhanced H2S enzyme activities in contrast to the vehicle-treated group. Mitochondrial integrity alterations, endothelial damage, and redox imbalance are key factors for rat mesenteric adipose tissue damage during advanced age. These alterations and MA hypertrophic changes retain the central for HFD-induced damage. Moreover, H2S signaling contributes to MA and mitochondria redox balance that is crucial for advanced age and HFD injury. The future study of H2S donors’ effects on mesenteric cells is fundamental to define novel therapeutic strategies against metabolic changes.
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Affiliation(s)
- Oleh Revenko
- Department of Physiology, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Yaroslav Pavlovskiy
- Department of Physiology, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Maryana Savytska
- Department of Physiology, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Antonina Yashchenko
- Department of Histology, Cytology and Embryology, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Vasyl Kovalyshyn
- Department of Histology, Cytology and Embryology, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Ilona Chelpanova
- Department of Histology, Cytology and Embryology, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Olena Varyvoda
- Department of Pathological Anatomy and Forensic Medicine, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Oksana Zayachkivska
- Department of Physiology, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
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Evaluation of antioxidant and anti-ulcerogenic effects of Eremurus persicus (Jaub & Spach) Boiss leaf hydroalcoholic extract on ethanol-induced gastric ulcer in rats. Inflammopharmacology 2021; 29:1503-1518. [PMID: 34435283 DOI: 10.1007/s10787-021-00868-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/13/2021] [Indexed: 12/14/2022]
Abstract
This study aimed to investigate the antioxidant and protective effect of E. persicus leaf hydroalcoholic extract (EPE) in preventing gastric ulcers induced by ethanol in rats. Wistar rats weighing 180-220 g were randomly divided into five groups. These groups included negative control (normal) group, positive control (ethanolic) group, comparative control (ranitidine recipient) group, group recipient the dose of 250 mg/kg plant extract, and group recipient the dose of 500 mg/kg plant extract. One hour after gavage of the drug and extract, the gastric ulcer was induced by feeding 1 ml of 96% ethanol to each animal except the rats of the negative control group. After one hour, the rats were killed, and their stomachs were separated. Then, the gastric Ulcer index (UI), pH, oxidative stress parameters, and histopathological changes in the stomach of all groups were measured. Pre-treatment of ethanol-induced rats with the EPE reduced (P < 0.05) the ulcer index and gastric juice pH, compared to ethanolic group rats. Furthermore, pre-treatment with EPE at a dose-dependent manner, alleviated the gastric oxidative stress injury in rats through increase the activity of CAT, tissue NO· and GSH levels. EPE also was able to decrease the levels of ROS, MDA, PCO and serum NO·. According to the results, it can be concluded that pre-treatment with EPE prevents the formation of gastric ulcers caused by ethanol, which can be attributed to the antioxidant activity of plant polyphenols compounds.
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Beiranvand M, Bahramikia S. Ameliorating and protective effects mesalazine on ethanol-induced gastric ulcers in experimental rats. Eur J Pharmacol 2020; 888:173573. [DOI: 10.1016/j.ejphar.2020.173573] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/13/2020] [Accepted: 09/14/2020] [Indexed: 12/12/2022]
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Pavlovskiy Y, Yashchenko A, Zayachkivska O. H 2S Donors Reverse Age-Related Gastric Malfunction Impaired Due to Fructose-Induced Injury via CBS, CSE, and TST Expression. Front Pharmacol 2020; 11:1134. [PMID: 32848752 PMCID: PMC7396573 DOI: 10.3389/fphar.2020.01134] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 07/13/2020] [Indexed: 12/15/2022] Open
Abstract
Objective Excess of fructose consumption is related to life-treating conditions that affected more than a third of the global population. Therefore, to identify a newer therapeutic strategy for the impact prevention of high fructose injury in age-related malfunctions of the gastric mucosa (GM) in the animal model is important. Methods Adult and aged male rats were divided into control groups (standard diet, SD) and high fructose diet (HFD) groups; acute water immersion restraint stress (WIRS) was induced for evaluation of GM adaptive response and effects of testing the therapeutic potential of H2S-releasing compounds (H2S donors). Histological examination of gastric damage was done on hematoxylin-eosin stained slides. Cystathionine beta-synthase (CBS), Cystathionine gamma-lyase (CSE), and Thiosulfate-dithiol sulfurtransferase (TST) activities and oxidative index were assessed during exogenous administration of H2S donors: sodium hydrosulfide (NaHS) and the novel hybrid H2S-releasing aspirin (ATB-340). The results showed that HFD increased gastric damage in adult and aged rats. HFD-associated malfunction characterized by low activities of H2S key enzymes, inducing increased oxidation. Pretreatment with NaHS, ATB-340 of aged rats in the models of HFD, and WIRS attenuated gastric damage in contrast to vehicle-treated group (p < 0.05). The effect of ATB-340 was characterized by reverse oxidative index and increased CBS, CSE, and TST activities. In conclusion, H2S donors prevent GM age-related malfunctions by enhancement of CBS, CSE, and TST expression against fructose excess injury though reduction of oxidative damage.
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Affiliation(s)
- Yaroslav Pavlovskiy
- Physiology Department, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Antonina Yashchenko
- Histology, Cytology and Embryology Department, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Oksana Zayachkivska
- Physiology Department, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
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Mishra AP, Bajpai A, Chandra S. A Comprehensive Review on the Screening Models for the Pharmacological Assessment of Antiulcer Drugs. ACTA ACUST UNITED AC 2020; 14:175-196. [PMID: 30864527 DOI: 10.2174/1574884714666190312143846] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 02/15/2019] [Accepted: 02/27/2019] [Indexed: 02/08/2023]
Abstract
BACKGROUND Due to inappropriate diet, smoking, alcohol consumption, regular use of drugs like NSAIDs and sedentary lifestyle, one may feel upper abdominal pain which may be the predictor of the gastrointestinal disorder called Peptic Ulcer. When an imbalance occurs between the defensive factor and aggressive factor of the stomach, ulcer formation in the esophageal lining, stomach, or duodenum takes place. This leads to the formation of small sores that cause pain. Another condition that synergizes the abdominal pain is vomiting materials which look like coffee grounds, blood in the stool, black or tarry stools. This pain may increase after lunch or dinner. This problem persists, that often leads to the gastroenterologist's consultation. OBJECTIVE There are many antiulcer screening models present for the determination of antiulcer activity of the drug molecule. The main objective of this study is to find which model is best for the determination of antiulcer activity. METHODS A literature search was conducted on the databases namely Science direct and PubMed with the help of different keywords such as "Anti-ulcer", "In-vitro models" and "In-vivo models". The search was customized by applying the appropriate filters so as to get the most relevant articles to meet the objective of this review article. RESULT There are different research and review papers based on the antiulcer screening models for the determination of antiulcer activity of new drug molecules. CONCLUSION On the basis of our study, we found some useful models for the antiulcer activity of drugs and suggested that, if we use in-vitro and in-vivo methods together, then we may obtain the most relevant result in our research area.
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Affiliation(s)
- Abhinav P Mishra
- Department of Pharmacy, Pranveer Singh Institute of Technology, Kanpur - Agra - Delhi National Highway -2, Bhauti, Kanpur, Uttar Pradesh 209305, India
| | - Ankit Bajpai
- Department of Pharmacy, Pranveer Singh Institute of Technology, Kanpur - Agra - Delhi National Highway -2, Bhauti, Kanpur, Uttar Pradesh 209305, India
| | - Suresh Chandra
- Department of Pharmacy, Pranveer Singh Institute of Technology, Kanpur - Agra - Delhi National Highway -2, Bhauti, Kanpur, Uttar Pradesh 209305, India
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The Use of Pistacia Lentiscus Chia Resin Versus Omeprazole in Protecting Male Rats Peptic Mucosa Against Cold Restraint Stress. ACTA ACUST UNITED AC 2020; 6:100-110. [PMID: 32426516 PMCID: PMC7216028 DOI: 10.2478/jccm-2020-0018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 04/14/2020] [Indexed: 12/11/2022]
Abstract
Introduction Peptic mucosal damage induced by acute stress is a serious cause of morbidity and mortality in critically ill patients. The study aimed to investigate the protective, antioxidant and anti-inflammatory effects of pretreatment with Chios mastic gum (CMG), a traditionally consumed herbal resin naturally deriving from the trunk of Pistacia Lentiscus var. Chia compared to Omeprazole, a standard medication used in the prevention and treatment of gastritis, against the effects of cold restraint stress (CRS) in rat gastric and colonic mucosa. Methods Twenty-one male Wistar rats were randomly assigned to three groups: Control (C), Omeprazole (O), and CMG (M), according to the pre-treatment regime, and were subjected to CRS at 40C for 3 hours. The gastric and colonic mucosal lesions were histologically assessed. ELISA measured blood concentrations of TNF-α, IL-1β, peroxidase, superoxide dismutase (SOD) and total antioxidant capacity (TEAC). Results In both groups, O and M, gastric mucosal hyperemia, haemorrhagic infiltration and mucosal oedema, as well as colonic mucosal hyperaemia and haemorrhagic infiltration were significantly reduced compared to the controls (p<0.05). No significant differences were observed between Groups O and M. TNF-α levels were significantly lower in group M compared to Group O (p=0.013). IL-1β levels were significantly depressed in groups M and O compared to control (p≤ 0.001). The activity of both peroxidase and SOD enzymes decreased in group M compared to group O (p= 0.043 and p=0.047 respectively) and the control (p=0.018 and p< 0.001 respectively). Conclusions The natural Chios mastic gum is a promising nutritional supplement with protective properties to the peptic mucosa against CRS, exerting anti-inflammatory and antioxidant effects.
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Exogenous hydrogen sulfide for the treatment of mesenteric damage associated with fructose-induced malfunctions via inhibition of oxidative stress. UKRAINIAN BIOCHEMICAL JOURNAL 2020. [DOI: 10.15407/ubj92.02.086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Chung YH, Park TK, Yim SH, Lee JH, Bang JS, Shin YK, Bae J, Sim SS, Hwang KW, Shin CY, Im WJ, Khin PP, Lee J, Min YS, Jeong JH, Sohn UD. Polysaccharide-Rich Extract of Phragmites rhizome Attenuates Water Immersion Stress and Forced Swimming Fatigue in Rodent Animal Model. J Med Food 2019; 22:355-364. [PMID: 30990752 DOI: 10.1089/jmf.2018.4218] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Our study aimed to investigate the effects of the polysaccharide-rich extract of Phragmites rhizoma (PEP) against water immersion restraint (WIR) stress and forced swimming-induced fatigue. Exposure to WIR stress significantly increased the ulcer index, bleeding score, the weight of the adrenal gland, blood glucose concentrations, total cholesterol, cortisol, and creatine kinase (CK). The weight of the spleen decreased significantly. In addition, myeloperoxidase (MPO) and thiobarbituric acid-reactive substance (TBARS) were significantly upregulated by WIR stress. The antioxidative factors such as glutathione (GSH) and superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) in the stomach were decreased by WIR stress. Alterations induced by WIR stress were effectively reversed by pretreatment with PEP. The swimming endurance capacity of mice was significantly prolonged by the oral administration of PEP. Swimming-induced fatigue significantly reduced the body weight; however, the injection of PEP inhibited the decrease of body weight. The PEP-treated group had significantly lower CK levels in plasma, an indicator of muscle damage. These results indicated that PEP has anti-stress and anti-fatigue effects, which are mediated by suppressing the hyperactivation of the hypothalamus-pituitary-adrenal axis, and antagonism of the oxidative damages induced by WIR stress and prolonged swimming times.
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Affiliation(s)
- Yoon Hee Chung
- 1 College of Medicine, Chung-Ang University, Seoul, Korea
| | - Tae Kwang Park
- 1 College of Medicine, Chung-Ang University, Seoul, Korea
| | - Sung Hyuk Yim
- 1 College of Medicine, Chung-Ang University, Seoul, Korea
| | - Jong Hyuk Lee
- 2 College of Life and Health Science, Hoseo University, Asan, Korea
| | - Joon Seok Bang
- 3 College of Pharmacy, Sookmyung Women's University, Seoul, Korea
| | - Yong Kyoo Shin
- 1 College of Medicine, Chung-Ang University, Seoul, Korea
| | - Jinhyung Bae
- 4 Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, Korea
| | - Sang Soo Sim
- 4 Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, Korea
| | - Kwang Woo Hwang
- 4 Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, Korea
| | - Chang Yell Shin
- 4 Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, Korea
| | - Wi Joon Im
- 4 Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, Korea
| | - Phyu Phyu Khin
- 4 Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, Korea
| | - Jaehwi Lee
- 4 Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, Korea
| | - Young Sil Min
- 5 College of Convergence Science and Technology, Jung Won University, Chungbuk, Korea
| | - Ji Hoon Jeong
- 1 College of Medicine, Chung-Ang University, Seoul, Korea
| | - Uy Dong Sohn
- 4 Department of Pharmacology, College of Pharmacy, Chung-Ang University, Seoul, Korea
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Arunachalam K, Damazo AS, Pavan E, Oliveira DM, Figueiredo FDF, Machado MTM, Balogun SO, Soares IM, Barbosa RDS, Alvim TDC, Ascêncio SD, Martins DTDO. Cochlospermum regium (Mart. ex Schrank) Pilg.: Evaluation of chemical profile, gastroprotective activity and mechanism of action of hydroethanolic extract of its xylopodium in acute and chronic experimental models. JOURNAL OF ETHNOPHARMACOLOGY 2019; 233:101-114. [PMID: 30611907 DOI: 10.1016/j.jep.2019.01.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 12/20/2018] [Accepted: 01/02/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cochlospermum regium (Bixaceae) is a native shrub of Brazil and its xylopodium (infusion/decoction) is being used for the treatment of gastritis, ulcers, arthritis, intestinal infections, gynaecological infections, skin diseases, among others. The aim of the present study was to evaluate the gastroprotective/antiulcer activity and the mechanism of action of hydroethanolic extract of C. regium xylopodium (HECr), using in vitro and in vivo models. Additionally, phytochemical constituents were identified by high-performance liquid chromatography (HPLC). MATERIALS AND METHODS C. regium xylopodium was macerated with ethanol/water to obtain the HECr. The phytochemical characterisation was carried out by HPLC. The antiulcer efficacy of HECr (25, 100 and 400 mg/kg, p.o.) was evaluated using acute acidified ethanol (HCl/EtOH), piroxicam and water immersion-induced experimental ulcer models. Chronic gastric ulcer healing activity of HECr was evaluated through acetic acid (99.8%) - induced model. Histological analysis and myeloperoxidase (MPO), glutathione (GSH), catalase (CAT) activities were also evaluated in chronic ulcer induced gastric tissues. The plausible mode of action of the HECr was assessed by estimation of gastric wall mucus production and the role of gastric secretion in pylorus ligature. The animals were also pre-treated with various inhibitors which includes indomethacin (10 mg/kg, p.o.) a selective inhibitor of cyclooxygenase, L-NAME (10 mg/kg, i.p.), an inhibitor of nitric oxide synthase, glibenclamide, a ATP-sensitive potassium channels (K+ATP) blocker (5 mg/kg, p.o.) or yohimbine (2 mg/kg, i.p.), an α2-adrenergic receptor antagonist. In vitro, Helicobacter pylori action was done by broth microdilution method. RESULTS The HPLC analysis data revealed the presence of gallic acid, rutin, myricetin, morin and kaempferol. HECr promoted protective effect against acute ulcers induced by HCl/EtOH with inhibitions of 47.52% (p < 0.01) and 62.69% (p < 0.001) at 100 and 400 mg/kg, and in piroxicam by 34.11% (p < 0.05), 49.14% (p < 0.01) and 61.34% (p < 0.001), at 25, 100 or 400 mg/kg, respectively, and in water restraint stress by 78.26% inhibition, p < 0.001, at the dose of 400 mg/kg when compared to the vehicle control group respectively. In the chronic gastric ulcer model, HECr (25, 100 and 400 mg/kg p.o.) significantly (p < 0.001) decreased the injured area by 58.80%, 77.87% and 71.10% respectively. Histological examination indicated that oral treatment of HECr promoted healing of gastric lesions by regenerating gastric mucosa layer with less inflammatory cells. HECr augmented the GSH, CAT activities and reduced MPO level. The pre-treatment with HECr increased the gastric wall mucus production. It also significantly altered the gastric secretion parameters by causing the reduction in the gastric juice volume, elevated the pH level and reduced the total acidity at all doses tested when compared with the vehicle group. HECr at the most active dose (100 mg/kg) reversed completely the reduction of PGs, NO production, closure of K+ATP- channels and α2-adrenoreceptor blockage - induced damages. In microdilution assay, the HECr showed good anti-Helicobacter pylori effect with MIC = 100 µg/mL. CONCLUSION The HECr presented preventive and curative effects in the experimental gastric ulcer models, besides good anti-Helicobacter pylori activity, which supports the traditional medicinal use of the xylopodium of this plant for gastrointestinal diseases. The underlying mechanisms of this antiulcerogenic/antiulcer action involve, at least, augmentation of mucus production, inhibition of gastric secretion, stimulation of PGs and NO synthesis. And that it involves activation of K+ATP channels and α-2-adrenergic receptors, in addition to an antioxidant activity, probably due to the presence of gallic acid and flavonoids in HECr.
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Affiliation(s)
- Karuppusamy Arunachalam
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil
| | - Amilcar Sabino Damazo
- Área de Histologia e Biologia Celular, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil
| | - Eduarda Pavan
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil
| | - Darley Maria Oliveira
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil
| | - Fabiana de Freitas Figueiredo
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil
| | - Marco Tulio Marra Machado
- Área de Farmacologia, Departamento de Ciências Básicas em Saúde, Faculdade de Medicina, Universidade Federal de Mato Grosso (UFMT), Cuiabá, Brazil
| | - Sikiru Olaitan Balogun
- Curso de Farmácia, Faculdade Noroeste do Mato Grosso, Associação Juinense de Ensino Superior (AJES), Juína, MT 78320-000, Brazil
| | - Ilsamar Mendes Soares
- Laboratório de Pesquisa em Produtos Naturais, Curso de Medicina, Universidade Federal do Tocantins (UFT), Palmas, Brazil
| | - Robson Dos Santos Barbosa
- Laboratório de Pesquisa em Produtos Naturais, Curso de Medicina, Universidade Federal do Tocantins (UFT), Palmas, Brazil
| | - Tarso da Costa Alvim
- Faculty of Food Engineering, Agroenergy Post Graduate Program, Federal University of Tocantins, Palmas, Tocantins, Brazil
| | - Sérgio Donizeti Ascêncio
- Laboratório de Pesquisa em Produtos Naturais, Curso de Medicina, Universidade Federal do Tocantins (UFT), Palmas, Brazil
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Xu Y, Huang C, Deng H, Jia J, Wu Y, Yang J, Tu W. TRPA1 and substance P mediate stress induced duodenal lesions in water immersion restraint stress rat model. TURKISH JOURNAL OF GASTROENTEROLOGY 2019; 29:692-700. [PMID: 30381276 DOI: 10.5152/tjg.2018.17817] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND/AIMS Transient receptor potential ankyrin 1 (TRPA1) and substance P (SP), both expression in sensory neurons, have important roles in stress-induced duodenal lesions. The possible contribution of TRPA1 and SP to stress-induced duodenal lesions was explored by using the water immersion restraint stress (WIRS) rat model. MATERIALS AND METHODS Western blotting, Real-time polymerase chain reaction (RT-PCR), and immunohistochemistry assay were used to evaluate the changes of TRPA1and SP expression in the dorsal root ganglia (DRG, T8-11), the corresponding segment of the spinal cord (T8-11), and the duodenum in a duodenal lesions rat model. The SP concentrations of duodenal mucosa were investigated using an enzyme-linked immunosorbent assay (ELISA). Duodenal lesions were assessed according to histopathological changes. TRPA1 specific antagonist HC-030031 was intrathecally or intraperitoneally performed to suppress the expression of both TRPA1 and SP for evaluating the roles of TRPA1 and SP in duodenal lesions. RESULTS In contrast to the control group, TRPA1 and substance P in the DRG (T8-11) and duodenum were up-regulated, and concentrations of SP in the duodenal mucosa were increased after WIRS (p<0.05), which are closely associated with duodenal lesions. SP concentrations in the duodenal mucosa were decreased and duodenal lesions were alleviated by pretreatment with TRPA1 antagonist HC-030031. We identified a protective role for HC-030031 in WIRS-induced duodenal lesions. Furthermore, we demonstrated that WIRS increased the concentrations of SP in the duodenal mucosa in a TRPA1-dependent manner. However, WIRS caused no significant changes of TRPA1 and SP in the spinal cord (T8-11) compared with the control group (p>0.05). CONCLUSION Our study indicates that TRPA1 antagonist HC-030031 alleviates duodenal lesions. TRPA1 is activated and sensitized, therefore concomitant neuropeptide SP is released, which exerts a critical role in inducing and maintaining duodenal lesions following WIRS in rats. This provides evidence that neuroimmune interactions may control duodenal injury. TRPA1 may be a potential drug target to inhibit the development of duodenal lesions by stress-induced in patients.
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Affiliation(s)
- Yan Xu
- Department of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangdong, China; The 173rd Clinical Department of PLA 421rd Hospital, Guangdong, China
| | - Caiqun Huang
- The 173rd Clinical Department of PLA 421rd Hospital, Guangdong, China
| | - Hui Deng
- Department of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangdong, China
| | - Ji Jia
- Department of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangdong, China
| | - Youping Wu
- Department of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangdong, China
| | - Jing Yang
- Department of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangdong, China
| | - Weifeng Tu
- Department of Anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, Guangdong, China
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Gastroprotective Effects of Paeonia Extract Mixture HT074 against Experimental Gastric Ulcers in Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:3546258. [PMID: 30906413 PMCID: PMC6398042 DOI: 10.1155/2019/3546258] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 02/03/2019] [Indexed: 12/26/2022]
Abstract
Background Paeonia extract mixture HT074 is a standardized multiherbal mixture comprising extracts from Inula britannica flowers and Paeonia lactiflora roots, which are used to treat digestive disorders in traditional Korean medicine. This study was focused on elucidating the underlying mechanisms of the gastroprotective effects of HT074 in different gastric ulcer models. Methods Gastric lesions were induced in rats by an HCl/EtOH solution, water immersion-restraint stress (WIRS), and indomethacin. Gastric secretions were studied in pylorus-ligated rats, while mucus secretions were assessed by measuring alcian blue-binding capacity of mucus in the rat model of HCl/EtOH-induced gastric ulcer. Additionally, the involvement of nitric oxide (NO) and sulfhydryl compounds in HT074-mediated mucosal protection was elucidated using their inhibitors, i.e., NG-nitro- L-arginine methyl ester hydrochloride (L-NAME) and N-ethylmaleimide (NEM), respectively. Furthermore, the effects on indomethacin-induced cell death and prostaglandin E2 (PGE2) levels were assessed in AGS cells. Results Oral administration of HT074 significantly decreased gastric lesions induced by HCl/EtOH, WIRS, and indomethacin. Furthermore, it significantly decreased the volume, acidity, and total acidity of gastric juice in pylorus-ligated rats and increased the alcian blue-stained gastric mucus in HCl/EtOH-induced gastric ulcer in rats. Pretreatment with NEM abolished the gastroprotective effects of HT074, while L-NAME did not. In AGS cells, HT074 significantly reduced indomethacin-induced cell death and increased the PGE2 levels. Conclusions These findings suggest that HT074 has gastroprotective effects against various ulcerogens, including HCl/EtOH, immersion stress, and NSAIDs. These effects are attributed to the inhibition of gastric secretions and preservation of the gastric mucosal barrier by increased mucus production, which is partially mediated through endogenous sulfhydryl compounds and PGE2. Based on these findings, we propose that HT074 may be a promising therapeutic agent for gastritis and gastric ulcer.
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Ajeigbe KO, Emikpe BO, Olaleye SB. Effects of artemisinin, with or without lumefantrine and amodiaquine on gastric ulcer healing in rat. J Basic Clin Physiol Pharmacol 2019; 29:515-524. [PMID: 29702486 DOI: 10.1515/jbcpp-2017-0145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 03/17/2018] [Indexed: 12/23/2022]
Abstract
Abstract
Background
Antimalarial drugs have been shown to predispose the stomach to ulceration in rats. However, their role in the modulation of gastric ulcer healing is not known. The aim of the present study is to investigate the effect of artemisinin-based combination therapies on ulcer healing.
Methods
Gastric kissing ulcers were induced in 40 male albino rats (150–180 g) using 0.2 mL 50% acetic acid. One day after the ulcer induction, experimental rats were divided into four groups and treated once daily orally for 3 days as follows: (1) normal saline, (2) artemether-lumefantrine (2/12 mg/kg), (3) artesunate-amodiaquine (4/10 mg/kg), and (4) artesunate (2 mg/kg) only. A fifth group of 10 rats served as overall control with no ulcer induced and no treatment given. Ulcer healing was determined on days 4 and 7 post induction using ulcer score and planimetry.
Results
Artesunate decreased ulcer severity by 12.5% and 52.0% on days 4 and 7, respectively. Significant increases in severity were observed in rats treated with artemether-lumefantrine (25.0% and 40.0%) and artesunate-amodiaquine (50.0% and 95.0%). Lipid peroxidation was decreased by artesunate by day 7 (27%; p<0.05) but increased in artemether-lumefantrine and artesunate-amodiaquine administered rats (63.6% and 55%; p<0.05). The activity of superoxide dismutase was reduced by artesunate-amodiaquine on day 7 (22%; p<0.05) but no effect in the artemether-lumefantrine treatment. Neutrophil infiltration, total leukocyte count, neutrophil-lymphocyte ratio, and C-reactive protein values were significantly increased in the artemether-lumefantrine and artesunate-amodiaquine treated groups when compared with the untreated ulcer control group (p<0.05). These variables were all reduced by artesunate (p<0.05).
Conclusions
This study revealed that although artesunate may be beneficial in gastric ulcer healing, its combination with either lumefantrine or amodiaquine may delay healing of gastric mucosal injury.
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Affiliation(s)
- Kazeem O Ajeigbe
- Gastrointestinal Secretion and Inflammation Research Unit, Department of Physiology, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria.,Department of Physiology, Igbinedion University, Okada, Benin, Edo State, Nigeria
| | - Benjamin O Emikpe
- Department of Veterinary Pathology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Samuel Babafemi Olaleye
- Gastrointestinal Secretion and Inflammation Research Unit, Department of Physiology, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria, Phone: +2348023255893
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Bhattamisra S, Hooi L, Shyan L, Chieh L, Candasamy M, Sahu P. Effect of geraniol and clarithromycin combination against gastric ulcers induced by acetic acid and Helicobacter pylori in rats. Pharmacognosy Res 2019. [DOI: 10.4103/pr.pr_21_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Xu Y, Jia J, Xie C, Wu Y, Tu W. Transient Receptor Potential Ankyrin 1 and Substance P Mediate the Development of Gastric Mucosal Lesions in a Water Immersion Restraint Stress Rat Model. Digestion 2018; 97:228-239. [PMID: 29428952 DOI: 10.1159/000484980] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 11/04/2017] [Indexed: 02/04/2023]
Abstract
BACKGROUND Activation of substance P (SP) contributes to the development and maintenance of gastric lesions, but the mechanisms underlying the release of SP and SP-mediated damage to the gastric mucosa remain unknown. Transient receptor potential ankyrin 1 (TRPA1) is expressed in SP-positive neurons in the dorsal root ganglion (DRG) and stomach of rats. We hypothesized that water immersion restraint stress (WIRS) may activate and sensitize TRPA1 in DRG neurons, subsequently inducing the release of SP from DRG and stomach cells, causing the development of acute gastric mucosal lesions (AGML). METHODS Changes in TRPA1 and SP expression in T8-11 DRG sensory neurons and the stomach in an AGML rat model were determined by reverse transcription polymerase chain reaction, western blotting and immunohistochemistry. The SP levels of serum and gastric mucosa were measured by using an enzyme-linked immunosorbent assay (ELISA). Gastric lesions were evaluated by histopathological changes. The TRPA1 antagonist HC-030031 and TRPA1 agonists allyl isothiocyanate were used to verify effect of TRPA1 and SP on AGML. RESULTS SP and TRPA1 in the DRG and stomach were upregulated, and the serum and gastric mucosa levels of SP were increased after WIRS, which are closely associated with AGML. The release of SP was suppressed and AGML were alleviated following a selective TRPA1 antagonist HC-030031. TRPA1 agonists AITC increased release of SP and led to moderate gastric lesions. We confirmed that WIRS induced the release of SP in the DRG, stomach, serum and gastric mucosa, and in a TRPA1-dependent manner. CONCLUSIONS Upregulated SP and TRPA1 in the DRG and stomach and increased serum and gastric mucosa SP levels may contribute to stress-induced AGML. TRPA1 is a potential drug target to reduce stress-induced AGML development in patients with acute critical illnesses. This study may contribute to the discovery of drugs for AGML treatment.
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Affiliation(s)
- Yan Xu
- Department of anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, The Second Military Medical University, Guangzhou, China.,Department of Anesthesiology, the 173rd Clinical Department of PLA, 421rd Hospital, Huizhou, China
| | - Ji Jia
- Department of anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, The Second Military Medical University, Guangzhou, China
| | - Chuangbo Xie
- Department of anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, The Second Military Medical University, Guangzhou, China
| | - Youping Wu
- Department of anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, The Second Military Medical University, Guangzhou, China
| | - Weifeng Tu
- Department of anesthesiology, Guangzhou General Hospital of Guangzhou Military Command, The Second Military Medical University, Guangzhou, China
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Dos Santos CBR, da Silva Ramos R, Ortiz BLS, da Silva GM, Giuliatti S, Balderas-Lopez JL, Navarrete A, Carvalho JCT. Oil from the fruits of Pterodon emarginatus Vog.: A traditional anti-inflammatory. Study combining in vivo and in silico. JOURNAL OF ETHNOPHARMACOLOGY 2018; 222:107-120. [PMID: 29723629 DOI: 10.1016/j.jep.2018.04.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/25/2018] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
ETHNOBOTANICAL RELEVANCE The oil obtained from the fruits of Pterodon emarginatus Vog. (OPe) is used orally and topically, in traditional medicine for some purposes, such as acute and chronic inflammatory states as rheumatoid arthritis. MATERIALS AND METHODS In this work, the anti-inflammatory activity of the OPe was demonstrated based on several animal models and presented an in silico study based on the 6α,7β-dihydroxy-vouacapan-17β-oic acid (DHVA) majority compound of the OPe to evaluate the interaction this compound, with cyclooxygenase-2 (COX-2) in 4COX (Mus musculus) and 5KIR (Homo sapiens) and molecular dynamics simulation. RESULTS The OPe (498 mg/kg, p.o) significantly inhibited (p < 0.05, Student t-test) the primary and secondary reactions of arthritis by Freund's Complete Adjuvant (FCA) and in dermatitis induced by croton oil in mice, OPe inhibited peak of edema. In vascular permeability test in rats, the treatment with OPe was able to block the response to PGE2, serotonin, and bradykinin (p < 0.05, Student t-test). In the writhing test in mice, the OPe at doses of 498 and 980 mg/kg (p.o) produced inhibition of 73% and 92%, respectively, and was not significantly effective in the hot plate test. In the evaluation of the potency in relation to gastric injury (gastric ulcer induced by stress) and combined assay in the assessment of anti-inflammatory potency and gastric damage, it was observed that indomethacin (10 mg/kg, p.o.) inhibited carrageenan edema by 51% and produced a higher number of gastric lesions when compared to the group treated with OPe, where only areas of hyperemia were observed, without the occurrence of ulcerative lesion, and which inhibited the edema by 47%. In the in silico study, it was found that the DHVA is capable of binding to two organisms (4COX - Mus musculus and 5KIR - Homo sapiens), however, with higher binding affinity to the organism Homo sapiens. CONCLUSIONS As expected, all tested ligands were capable of forming hydrogen interactions with residues at their respective binding sites, but the DHVA ligand was capable of creating slightly more hydrogen bonds when docked to either 4COX or 5KIR than the other tested ligands, thus demonstrating the participation of this compound in the anti-inflammatory and antialgic responses observed in the in vivo assays as a COX-2 inhibitor. Therefore, the results obtained support the traditional use of OPe for inflammatory and gastric problems.
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Affiliation(s)
- Cleydson Breno Rodrigues Dos Santos
- Laboratório de Pesquisa em Fármacos, Departamento de Ciências Biológicas e Saúde, Universidade Federal do Amapá (UNIFAP), Rodovia Juscelino Kubitschek, S/N, Campus Marco Zero, Macapá, AP CEP 68903-419, Brazil; Laboratório de Modelagem e Química Computacional (LMQC), Departamento de Ciências Biológicas e Saúde, Universidade Federal do Amapá (UNIFAP), Rodovia Juscelino Kubitschek, S/N, Campus Marco Zero, Macapá, AP CEP 68903-419, Brazil
| | - Ryan da Silva Ramos
- Laboratório de Modelagem e Química Computacional (LMQC), Departamento de Ciências Biológicas e Saúde, Universidade Federal do Amapá (UNIFAP), Rodovia Juscelino Kubitschek, S/N, Campus Marco Zero, Macapá, AP CEP 68903-419, Brazil
| | - Brenda Lorena Sánchez Ortiz
- Laboratório de Pesquisa em Fármacos, Departamento de Ciências Biológicas e Saúde, Universidade Federal do Amapá (UNIFAP), Rodovia Juscelino Kubitschek, S/N, Campus Marco Zero, Macapá, AP CEP 68903-419, Brazil; Programa de Pós-Graduação em Inovação Farmacêutica, Departamento de Ciências Biológicas e Saúde, Universidade Federal do Amapá (UNIFAP), Rodovia Juscelino Kubitschek, S/N, Campus Marco Zero, Macapá, AP CEP 68903-419, Brazil
| | - Gabriel Monteiro da Silva
- Grupo de Bioinformatica, Departamento de Genética, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP/RP), Avenida Bandeirantes 3900, Monte Alegre, Ribeirao Preto, Sao Paulo CEP 14049-900, Brazil
| | - Silvana Giuliatti
- Grupo de Bioinformatica, Departamento de Genética, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP/RP), Avenida Bandeirantes 3900, Monte Alegre, Ribeirao Preto, Sao Paulo CEP 14049-900, Brazil
| | - José Luis Balderas-Lopez
- Laboratorio de Farmacología de Productos Naturales, Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Andrés Navarrete
- Laboratorio de Farmacología de Productos Naturales, Facultad de Química, Departamento de Farmacia, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - José Carlos Tavares Carvalho
- Laboratório de Pesquisa em Fármacos, Departamento de Ciências Biológicas e Saúde, Universidade Federal do Amapá (UNIFAP), Rodovia Juscelino Kubitschek, S/N, Campus Marco Zero, Macapá, AP CEP 68903-419, Brazil; Programa de Pós-Graduação em Inovação Farmacêutica, Departamento de Ciências Biológicas e Saúde, Universidade Federal do Amapá (UNIFAP), Rodovia Juscelino Kubitschek, S/N, Campus Marco Zero, Macapá, AP CEP 68903-419, Brazil.
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Protective activity of geraniol against acetic acid and Helicobacter pylori- induced gastric ulcers in rats. J Tradit Complement Med 2018; 9:206-214. [PMID: 31193983 PMCID: PMC6544613 DOI: 10.1016/j.jtcme.2018.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 04/26/2018] [Accepted: 05/05/2018] [Indexed: 12/11/2022] Open
Abstract
Geraniol, an active constituent of rose and palmarosa essential oils, possesses several pharmacological properties, including antioxidant, antibacterial and antiulcer activity. Geraniol was therefore investigated for its antiulcer and anti-Helicobacter pylori activity in rats. Ulcers were induced by injecting acetic acid into the sub-serosal layer of the stomach followed by orogastric inoculation of H. pylori for 7 days. Geraniol (15 and 30 mg/kg), vehicle and a standard drug combination (amoxicillin, 50 mg/kg; clarithromycin, 25 mg/kg and omeprazole, 20 mg/kg) were administered twice daily for 14 days. All the parameters were measured at the end of treatment. The ulcer index was significantly (P < 0.05) lowered in geraniol and standard drug-treated rats as compared to the H. pylori control group (4.13 ± 0.43). Treatment with geraniol (30 mg/kg) significantly (P < 0.01) increased the gastric pH along with a reduction in total acidity and gastric juice volume. Geraniol significantly (P < 0.05) attenuated the myeloperoxidase activity and augmented the total glutathione level in gastric mucosa. The extent of damage in the stomach was measured using a histopathological score. The score in H. pylori control, geraniol (30 mg/kg) and standard drugs was 9, 3.5 and 2.0 respectively. In the rapid urease test, treatment with geraniol (30 mg/kg) and the standard drugs produced a 33% and 67% cure respectively from H. pylori infection. Further, the reduction in bacterial load in the gastric mucosa was confirmed using modified Giemsa staining. Geraniol was observed to exhibit significant antiulcer and anti-H. pylori activity in a rodent model.
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Emerging role of carbon monoxide in regulation of cellular pathways and in the maintenance of gastric mucosal integrity. Pharmacol Res 2018; 129:56-64. [DOI: 10.1016/j.phrs.2018.01.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 01/12/2018] [Accepted: 01/18/2018] [Indexed: 12/14/2022]
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Central [CNS] and Peripheral [Gastric Tissue] Selective Monitoring of Somatostatin (SRIF) with Micro-Sensor and Voltammetry in Rats: Influence of Growth Factors (GH, EGF). BIOSENSORS-BASEL 2017; 7:bios7040053. [PMID: 29149074 PMCID: PMC5746776 DOI: 10.3390/bios7040053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/11/2017] [Accepted: 11/14/2017] [Indexed: 11/18/2022]
Abstract
Somatostatin (SRIF) is widely distributed throughout the body, and regulates the endocrine system via interactions with various hormones, including the pituitary growth hormone, the thyroid stimulating hormone and the majority of the hormones of the gastrointestinal tract. SRIF is present in the central nervous system (CNS), where it affects rates of neurotransmission, and is also reported to be active in the intestinal tract, with evidence that stressed rats present a significant decrease in antral somatostatin-like immunoreactivity (SLI). Analysis of SRIF has mainly been carried out by means of radioimmunoassay methods. Here, we propose the use of an electrochemical method, such as voltammetry, applied with carbon-based sensors and, in particular, the combination of differential pulse voltammetry with treated carbon fiber micro electrodes (DPV-µCFE) to facilitate the analysis of such peptidergic electro active hormones in the rat striatum and gastric tissue; the effect of growth hormone (GH) and epidermal growth factor (EGF), in particular, upon the SRIF signal has been studied in such tissues.
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Sadra A, Kweon HS, Huh SO, Cho J. Gastroprotective and gastric motility benefits of AD-lico/Healthy Gut™ Glycyrrhiza inflata extract. Anim Cells Syst (Seoul) 2017; 21:255-262. [PMID: 30460076 PMCID: PMC6138315 DOI: 10.1080/19768354.2017.1357660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/26/2017] [Accepted: 07/13/2017] [Indexed: 02/06/2023] Open
Abstract
The aim of this study was to evaluate in vivo both the anti-Helicobacter and the gastric-relaxing effects of AD-lico/Healthy Gut™ in rat models. AD-lico/Healthy Gut™ is a specially prepared commercial formulation of Glycyrrhiza inflata extract that is under clinical development for indications of gastrointestinal disease and inflammatory bowel disease. In the current study, the oral administration of AD-lico/Healthy Gut™ significantly reduced mucosal damage from Helicobacter pylori in rats and decreased the expression of the inflammatory markers iNOS and COX-2 in the test cells. AD-lico/Healthy Gut™ also reduced mucosal damage caused by water immersion stress in rats. The accelerated gastric emptying in normal rats was also seen with AD-lico/Healthy Gut™, providing relief in gastric relaxation in the test animals. The special formulation of AD-lico/Healthy Gut™ with reduced levels of component glycyrrhizin also has benefits in minimizing the potential side effects attributed to glycyrrhizin seen with similar Glycyrrhiza extracts in terms of induction of hypokalemia and muscle weakness. The preparation has a relatively high phenolic compound content relative to other methods of preparation and is indicative of lower glycyrrhizin levels. These results suggest that AD-lico/Healthy Gut™ may provide the necessary relief from a number of stomach discomfort issues faced by a large population of people.
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Affiliation(s)
- Ali Sadra
- Department of Pharmacology, College of Medicine, Hallym University, Chuncheon, Gangwon-Do, South Korea.,SynergyBio, Chuncheon, Gangwon-Do, South Korea
| | | | - Sung-Oh Huh
- Department of Pharmacology, College of Medicine, Hallym University, Chuncheon, Gangwon-Do, South Korea.,SynergyBio, Chuncheon, Gangwon-Do, South Korea
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Controlling nucleation and growth of nano-CaCO 3 via CO 2 sequestration by a calcium alkoxide solution to produce nanocomposites for drug delivery applications. Acta Biomater 2017; 57:426-434. [PMID: 28483694 DOI: 10.1016/j.actbio.2017.05.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 04/18/2017] [Accepted: 05/03/2017] [Indexed: 11/23/2022]
Abstract
Calcium carbonate is an extremely attractive material in a plethora of biomedical applications. Intensive efforts have recently been made to achieve the control over its nucleation and subsequent aggregation, growth and crystallization; focusing on bringing insight into the role of precursors, solvents and templates. Having analyzed the recently acquired knowledge, we addressed this challenge using CO2 sequestration synthesis, using an unusual reactant, a solution of calcium ethoxide, Ca(OC2H5)2, as precursor. By tailoring the reaction conditions, it was possible to produce extremely small and rather size-uniform single-phase calcite CaCO3 nanoparticles, forming sols and subsequently gels in the applied medium. According to DLS and nanoparticle tracking analysis the particles are only to a minor extent aggregated in the mother liquor and can form transparent gels on concentration in less polar media, but produce large aggregates 400-800nm in size when dried and subsequently transferred to aqueous media. Complete drying of solutions renders xerogel type materials with only moderate active surface area, as identified by nitrogen adsorption, due to aggregation with development of densified surface layers. Such behaviour is typical for the sol-gel synthesis of particles possessing enhanced surface reactivity. The aggregation on drying was used to produce hybrid nanocomposites, with the hydrophobic model component, β-carotene, introduced in solution in a non-polar co-solvent and model medicine - ibuprofen. The obtained nanocomposite particles, characterized by SEM, TEM, XRD, AFM and FTIR studies, are hierarchically structured spheroidal aggregates about 200nm in size with uniform distribution of the organic components present in the amorphous state. The composite particles are stable in neutral aqueous environments but are readily dissolved in acidic medium or even in PBS at pH = 7.40, releasing the hydrophobic organic component in the form of a relatively stable colloid solution. Efficient release of ibuprofen as model drug was achieved in both acidic and PBS medium and could be slowed down by the addition of β-carotene as hydrophobic component. STATEMENT OF SIGNIFICANCE The proposed sol-gel synthesis of CaCO3 proved to create unprecedented size of CaCO3 nanoparticles with striking size uniformity. The obtained results clearly demonstrate their ability to incorporate hydrophobic components in a nanocomposite matrix converting them into amorphous nano sized particles, building stable colloids via release in acidic medium. Transfer of a sol produced in organic medium into water in the presence of albumen surfactant results in relatively uniform micro particles about 1μm size. The obtained materials show characteristics attractive for use in drug delivery and potentially also a variety of other industrial applications.
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Kishor B, Rai P, Bharatia R, Kumar S, Gupta SK, Sinha A. Adaptogenic potential of Oxitard in experimental chronic stress and chronic unpredictable stress induced dysfunctional homeostasis in rodents. J Ayurveda Integr Med 2017; 8:169-176. [PMID: 28693955 PMCID: PMC5607385 DOI: 10.1016/j.jaim.2017.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 01/04/2017] [Accepted: 01/10/2017] [Indexed: 11/26/2022] Open
Abstract
Background Oxitard, a polyherbal formulation comprising the extracts of Withania somnifera, Mangifera indica, Glycyrrhiza glabra, Daucus carota, Vitis vinifera, powders of Syzygium aromaticum, Yashada bhasma and Emblica officinalis; and oils of Triticum sativum. Objective Current study deals with the assessment of Oxitard (a marketed polyherbal formulation) for its adaptogenic potential in chronic unpredictable stress (CUS) and chronic stress (CS) induced dysfunctional homeostasis in rodents. Materials & methods Animals were immobilized for 2 h every day for ten days to induce CS. In order to induce CUS, animals were employed in a battery of stressors of variable value and duration for ten days. Following administration of Oxitard, stress was induced in the animals. Stress-induced efficient changes were evaluated by assessing organ (adrenal gland) weights, ulcer index, hematological parameters and biochemical levels of reduced glutathione (GSH), thiobarbituric acid reactive substances (TBARS) and catalase (CAT). Results CS and CUS significantly modified the oxidative stress parameters (increased MDA and decreased GSH). Furthermore, CS and CUS lead to weight reduction, adrenal hypertrophy and gastric ulceration. Pre-treatment with Oxitard (200 and 400 mg/kg, p.o.) significantly modified CS and CUS induced hematological changes, oxidative stress parameters and pathological effects. Conclusion In conclusion, Oxitard-intervened antioxidant actions are accountable for its adaptogenic effects in stress-induced dysfunctional homeostasis.
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Affiliation(s)
- Brajnandan Kishor
- Department of Pharmacology, Hygia Institute of Pharmaceutical Education & Research, Lucknow 226020, Uttar Pradesh, India
| | - Pooja Rai
- Department of Pharmacology, Hygia Institute of Pharmaceutical Education & Research, Lucknow 226020, Uttar Pradesh, India
| | - Rakesh Bharatia
- Department of Pharmacology, Hygia Institute of Pharmaceutical Education & Research, Lucknow 226020, Uttar Pradesh, India
| | - Sanjay Kumar
- Department of Pharmacology, Hygia Institute of Pharmaceutical Education & Research, Lucknow 226020, Uttar Pradesh, India
| | - Sujeet Kumar Gupta
- Department of Pharmacology, Hygia Institute of Pharmaceutical Education & Research, Lucknow 226020, Uttar Pradesh, India
| | - Anshuman Sinha
- Department of Pharmacology, Hygia Institute of Pharmaceutical Education & Research, Lucknow 226020, Uttar Pradesh, India.
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Bronowicka-Adamska P, Wróbel M, Magierowski M, Magierowska K, Kwiecień S, Brzozowski T. Hydrogen Sulphide Production in Healthy and Ulcerated Gastric Mucosa of Rats. Molecules 2017; 22:molecules22040530. [PMID: 28346391 PMCID: PMC6154691 DOI: 10.3390/molecules22040530] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 03/13/2017] [Accepted: 03/22/2017] [Indexed: 11/17/2022] Open
Abstract
Hydrogen sulphide (H2S) is produced endogenously via two enzymes dependent on pyridoxal phosphate (PLP): cystathionine beta-synthase (CBS, EC 4.2.1.22), cystathionase γ-liase (CTH, EC 4.4.1.1), and a third, 3-mercaptopyruvate sulfurtransferase (MPST, EC 2.8.1.2). H2S strengthens the defence mechanisms of the gastric mucosal barrier, and plays an important role in gastroprotection, including the increased resistance to damage caused by various irritants and non-steroidal anti-inflammatory drugs. The study was conducted to determine the role of H2S in ulcerated gastric mucosa of rats caused by immobilization in cold water (WRS). The activity and expression of γ-cystathionase, cystathionine β-synthase, 3-mercaptopyruvate sulfurtransferase, and rhodanese was compared with healthy mucosa, together with H2S generation, and cysteine, glutathione, and cystathionine levels. The results showed that the defence mechanism against stress is associated with stimulation of the production of H2S in the tissue and confirmed the observed advantageous effect of H2S on healing of gastric ulcers. In case of animals pretreated with exogenous sources of H2S and NaHS, and some changes observed in the ulcerated gastric mucosa tend to return to values found in the healthy tissue, a finding that is in accordance with the previously determined gastroprotective properties of H2S. The results presented in this paper point to the possible role of rhodanese in H2S production in the gastric mucosa of rats, together with the earlier mentioned three enzymes, which are all active in this tissue.
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Affiliation(s)
- Patrycja Bronowicka-Adamska
- Chair of Medical Biochemistry, Jagiellonian University Medical College, Krakow, 7 Kopernika St., 31-034 Cracow, Poland.
| | - Maria Wróbel
- Chair of Medical Biochemistry, Jagiellonian University Medical College, Krakow, 7 Kopernika St., 31-034 Cracow, Poland.
| | - Marcin Magierowski
- Department of Physiology, Jagiellonian University Medical College, 31-530 Krakow, Poland.
| | - Katarzyna Magierowska
- Department of Physiology, Jagiellonian University Medical College, 31-530 Krakow, Poland.
| | - Sławomir Kwiecień
- Department of Physiology, Jagiellonian University Medical College, 31-530 Krakow, Poland.
| | - Tomasz Brzozowski
- Department of Physiology, Jagiellonian University Medical College, 31-530 Krakow, Poland.
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Ohta Y, Yashiro K, Kobayashi T, Inui K, Yoshino J. Protective effect ofN,N’-dimethylthiourea against stress-induced gastric mucosal lesions in rats. Fundam Clin Pharmacol 2017; 31:319-328. [DOI: 10.1111/fcp.12268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 01/11/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Yoshiji Ohta
- Department of Chemistry; Fujita Health University School of Medicine; Toyoake Aichi 470-1192 Japan
| | - Koji Yashiro
- Department of Chemistry; Fujita Health University School of Medicine; Toyoake Aichi 470-1192 Japan
| | - Takashi Kobayashi
- Department of Internal Medicine; Second Teaching Hospital; Fujita Health University School of Medicine; Nagoya Aichi 454-0012 Japan
| | - Kazuo Inui
- Department of Internal Medicine; Second Teaching Hospital; Fujita Health University School of Medicine; Nagoya Aichi 454-0012 Japan
| | - Junji Yoshino
- Dainagoya building Central Clinic; Nagoya Aichi 450-6409 Japan
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Baiubon P, Kunanusorn P, Khonsung P, Chiranthanut N, Panthong A, Rujjanawate C. Gastroprotective activity of the rhizome ethanol extract of Zingiber simaoense Y. Y. Qian in rats. JOURNAL OF ETHNOPHARMACOLOGY 2016; 194:571-576. [PMID: 27765607 DOI: 10.1016/j.jep.2016.10.049] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 10/14/2016] [Accepted: 10/16/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Zingiber simaoense Y. Y. Qian belongs to the Zingiberaceae family. Its rhizome has been used in Thai folk medicine to relieve gastric disorders; however, scientific evidence of its pharmacological activities has not yet been revealed. AIM OF THE STUDY This study was designed to validate the gastroprotective activity and to identify possible mechanisms of gastroprotection of Z. simaoense rhizome ethanol extract (ZSE) in rats. MATERIALS AND METHODS The gastroprotective effect of ZSE was tested using models of gastric ulcers induced by acidified ethanol, indomethacin, and restraint water immersion stress. Models for determination of gastric wall mucus secretion and plasma malondialdehyde levels as well as pylorus ligation were used to explore the mechanisms of action. RESULTS After oral administration by intragastric gavage, ZSE 7.5, 15, and 30mg/kg or cimetidine 100mg/kg significantly inhibited the formation of gastric ulcer in all gastric ulcer models. The gastric wall mucus amount was significantly higher than that of the ulcer control group, plasma malondialdehyde levels were normalized, and gastric secretion was partly inhibited by pretreatment with ZSE. CONCLUSIONS This study demonstrates the gastroprotective activity of ZSE in rats. The mechanisms of action of ZSE may depend on its ability to maintain the integrity of gastric wall mucus through the protection of gastric mucus, and/or by increasing the gastric mucus synthesis and secretion through prostaglandin synthesis. Moreover, the antioxidant activity of ZSE may also contribute to its mechanism of gastroprotection.
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Affiliation(s)
- Pareeya Baiubon
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Puongtip Kunanusorn
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Parirat Khonsung
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Natthakarn Chiranthanut
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand.
| | - Ampai Panthong
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand; Department of Chemistry and Center for Innovation in Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand.
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Magierowska K, Magierowski M, Surmiak M, Adamski J, Mazur-Bialy AI, Pajdo R, Sliwowski Z, Kwiecien S, Brzozowski T. The Protective Role of Carbon Monoxide (CO) Produced by Heme Oxygenases and Derived from the CO-Releasing Molecule CORM-2 in the Pathogenesis of Stress-Induced Gastric Lesions: Evidence for Non-Involvement of Nitric Oxide (NO). Int J Mol Sci 2016; 17:442. [PMID: 27023525 PMCID: PMC4848898 DOI: 10.3390/ijms17040442] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 03/18/2016] [Accepted: 03/18/2016] [Indexed: 02/08/2023] Open
Abstract
Carbon monoxide (CO) produced by heme oxygenase (HO)-1 and HO-2 or released from the CO-donor, tricarbonyldichlororuthenium (II) dimer (CORM-2) causes vasodilation, with unknown efficacy against stress-induced gastric lesions. We studied whether pretreatment with CORM-2 (0.1-10 mg/kg oral gavage (i.g.)), RuCl₃ (1 mg/kg i.g.), zinc protoporphyrin IX (ZnPP) (10 mg/kg intraperitoneally (i.p.)), hemin (1-10 mg/kg i.g.) and CORM-2 (1 mg/kg i.g.) combined with N(G)-nitro-l-arginine (l-NNA, 20 mg/kg i.p.), 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ, 10 mg/kg i.p.), indomethacin (5 mg/kg i.p.), SC-560 (5 mg/kg i.g.), and celecoxib (10 mg/kg i.g.) affects gastric lesions following 3.5 h of water immersion and restraint stress (WRS). Gastric blood flow (GBF), the number of gastric lesions and gastric CO and nitric oxide (NO) contents, blood carboxyhemoglobin (COHb) level and the gastric expression of HO-1, HO-2, hypoxia inducible factor 1α (HIF-1α), tumor necrosis factor α (TNF-α), cyclooxygenase (COX)-2 and inducible NO synthase (iNOS) were determined. CORM-2 (1 mg/kg i.g.) and hemin (10 mg/kg i.g.) significantly decreased WRS lesions while increasing GBF, however, RuCl₃ was ineffective. The impact of CORM-2 was reversed by ZnPP, ODQ, indomethacin, SC-560 and celecoxib, but not by l-NNA. CORM-2 decreased NO and increased HO-1 expression and CO and COHb content, downregulated HIF-1α, as well as WRS-elevated COX-2 and iNOS mRNAs. Gastroprotection by CORM-2 and HO depends upon CO's hyperemic and anti-inflammatory properties, but is independent of NO.
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Affiliation(s)
- Katarzyna Magierowska
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Marcin Magierowski
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Marcin Surmiak
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
- Division of Molecular Biology and Clinical Genetics, Department of Medicine, Jagiellonian University Medical College, 31-006 Cracow, Poland.
| | - Juliusz Adamski
- Department of Forensic Toxicology, Institute of Forensic Research, 31-033 Cracow, Poland.
| | - Agnieszka Irena Mazur-Bialy
- Department of Ergonomics and Exercise Physiology, Faculty of Health Sciences, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Robert Pajdo
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Zbigniew Sliwowski
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Slawomir Kwiecien
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
| | - Tomasz Brzozowski
- Department of Physiology, Jagiellonian University Medical College, 31-531 Cracow, Poland.
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Dranitsina AS, Morgaienko OO, Grebinyk DM, Ostapchenko LI. EXPRESSION OF REG1Α, GAST AND TGFB1 GENES IN CONDITIONS OF STRESSINDUCED GASTRIC MUCOUS LESIONS DEVELOPMENT AND HEALING IN RATS. ACTA ACUST UNITED AC 2016. [PMID: 29537200 DOI: 10.15407/fz62.01.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Analysis of Reg1a gene expression in rat gastric mucosa under development and healing of stress-induced lesions was carried out. Increased expression of Reg1a was observed after 1 hour of stressor impact - 2,1 times, and achieved the maximum level expression after 3 hours of stress exposure - 3,5 times, that occurred on the background of lipid peroxidation intensification and antioxidant system dysfunction. The sharp decrease in 1,6 and 2 times of Reg1a gene expression was shown in 12 and 24 hours respectively after termination of the stressor action. Analysis of Gast gene expression did not confirm that gastrin stimulated Reg1a expression in gastric mucosa under water immersion restraint stress. The positive correlation between Reg1a and Tgfb1 genes expression was determined in the dynamics of stress-induced gastric lesions’ development and healing, which may indicate the involvement of Tgfb1 to acceleration of lesion’s healing.
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Katsuyama H, Fushimi S, Yamane K, Watanabe Y, Shimoya K, Okuyama T, Katsuyama M, Saijoh K, Tomita M. Effect of vitamin K2 on the development of stress-induced osteopenia in a growing senescence-accelerated mouse prone 6 strain. Exp Ther Med 2015; 10:843-850. [PMID: 26622403 DOI: 10.3892/etm.2015.2621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 06/01/2015] [Indexed: 12/23/2022] Open
Abstract
Vitamin K2 (VK2) has been used as a therapeutic agent for osteoporosis, since it has been suggested to be able to reduce the frequency of fractures by improving bone quality; however, bone turnover is strictly regulated by various cytokines and hormones. In the present study, the effect of menaquinone-4 (MK-4) on bone turnover was investigated using the senescence-accelerated mouse prone 6 (SAMP6) strain. Since water-immersion restraint stress (WRS) causes a significant decrease in bone mineral density (BMD), WRS was used as the bone resorption model in the SAMP6 strain. Six-week-old SAMP6 male mice were divided into the following three groups: Control, WRS and WRS + MK-4. WRS was performed for 6 h per day, 5 times a week, for 4 weeks. Following WRS, MK-4 (30 mg/kg) was injected subcutaneously 3 times a week for 4 weeks. No growth retardation was observed in the WRS groups as compared with the control group. In the WRS groups, the BMD was significantly lower than that in the control group. The levels of bone formation and resorption markers were increased in the WRS groups, indicating that WRS reduced the BMD by promoting high bone turnover. A bone histomorphometrical examination showed that the trabecular (Tb) bone mass in the secondary spongiosa at the distal femur was significantly reduced in the WRS mice, and this reduction was abrogated by MK-4 treatment. Specifically, the Tb bone reduction was caused by the activation of osteoclasts (Ocs), and Oc activity was suppressed by MK-4. The number of osteoblasts and the mineral apposition rate were significantly increased in the WRS and WRS + MK-4 mice, suggesting that WRS triggered a significantly higher mineral apposition rate. These results indicate that MK-4 can induce recovery from the bone mineral loss caused by WRS treatment. Further studies are required to clarify the association between bone quality and MK-4.
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Affiliation(s)
- Hironobu Katsuyama
- Department of Public Health, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Shigeko Fushimi
- Department of Public Health, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan ; Department of Oral Pathology and Medicine, Okayama University School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8525, Japan
| | - Kunikazu Yamane
- Department of Public Health, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Yoko Watanabe
- Department of Natural Sciences, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Koichiro Shimoya
- Department of Obstetrics and Gynecology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Toshiko Okuyama
- Department of Medical Toxicology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Midori Katsuyama
- Department of Hygiene, Kanazawa University School of Medicine, Kanazawa, Ishikawa 920-8640, Japan
| | - Kiyofumi Saijoh
- Department of Hygiene, Kanazawa University School of Medicine, Kanazawa, Ishikawa 920-8640, Japan
| | - Masafumi Tomita
- Department of Medical Toxicology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
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Balogun SO, Damazo AS, de Oliveira Martins DT. Helicteres sacarolha A. St.- Hil. et al.: gastroprotective and possible mechanism of actions in experimental animals. JOURNAL OF ETHNOPHARMACOLOGY 2015; 166:176-184. [PMID: 25792014 DOI: 10.1016/j.jep.2015.03.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Revised: 02/10/2015] [Accepted: 03/08/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Helicteres sacarolha A. St.- Hil. et al. popularly known in Brazil as 'semente-de-macaco', is widely employed in the popular medicine in many of parts of Brazil in the alleviation of symptoms of ailments such as peptic ulcer and inflammation. Up to the present, there is no study addressing the gastroprotective activity of the hydroethanolic extract of H. sacarolha and its possible mechanism of actions. MATERIALS AND METHODS The hydroethanolic (70%) extract of H. sacarolha (HEHs) was obtained by maceration. The gastroprotective activity was assessed using gastric ulcer models induced by acidified ethanol, piroxicam, and water restraint stress in mice and rats at doses of 20, 50 and 250mg/kg p.o. Mechanistic studies involved the antisecretory assay evaluated with pylorus ligation in rats and pre-treatments with appropriate antagonists/inhibitors such as yohimbine, glibenclamide, indomethacin and l-NAME, effect on catalase and myeloperoxidase activities and gastric mucus determination using acidified ethanol- induced ulcer in mice. RESULTS HEHs at all doses tested demonstrated potent gastroprotective activities in the acute ulcer models. The gastroprotective activity of HEHs was attenuated by pre-treatments with yohimbine, glibenclamide, indomethacin and l-NAME. HEHs effectively reduced basal gastric juice production without any effect on the free and total acidity. The gastroprotective action of HEHs involved increasing the antioxidant enzyme catalase and mucus secretion and inhibition of neutrophyl infiltration as reflected by the reduction in the myeloperoxidase activity. CONCLUSION The results of this study gave a scientific support for the popular use of the leaves of H. sacarolha in the treatment of gastric ulcers and that it has a multi-targeted action.
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Affiliation(s)
- Sikiru Olaitan Balogun
- Postgraduate Studies in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso (UFMT), 78060-900 Cuiabá, MT, Brazil
| | - Amilcar Sabino Damazo
- Postgraduate Studies in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso (UFMT), 78060-900 Cuiabá, MT, Brazil; Department of Basic Health Sciences, Faculty of Medicine, Federal University of Mato Grosso (UFMT), 78060-900 Cuiabá, MT, Brazil
| | - Domingos Tabajara de Oliveira Martins
- Postgraduate Studies in Health Sciences, Faculty of Medicine, Federal University of Mato Grosso (UFMT), 78060-900 Cuiabá, MT, Brazil; Department of Basic Health Sciences, Faculty of Medicine, Federal University of Mato Grosso (UFMT), 78060-900 Cuiabá, MT, Brazil.
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Protective Effect of Flos Lonicerae against Experimental Gastric Ulcers in Rats: Mechanisms of Antioxidant and Anti-Inflammatory Action. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:596920. [PMID: 25610477 PMCID: PMC4290635 DOI: 10.1155/2014/596920] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 11/21/2014] [Accepted: 12/11/2014] [Indexed: 02/06/2023]
Abstract
Flos Lonicerae is one of the oldest and most commonly prescribed herbs in Eastern traditional medicine to treat various inflammatory diseases. In the present study, we investigated the effects of ethyl acetate fraction of Flos Lonicerae (GC-7101) on experimental gastric ulcer models and its mechanisms of action in gastric ulcer healing. The pharmacological activity of GC-7101 was investigated in rats on HCl/EtOH, indomethacin, water immersion restraint stress induced acute gastric ulcer, and acetic-acid-induced subchronic gastric ulcer. To determine its gastroprotective mechanisms, gastric wall mucus secretion, mucosal PGE2, mucosal NO content, nuclear translocation of NF-κB, mRNA expression of inflammatory cytokines, lipid peroxidation and glutathione content, and superoxide dismutase and catalase activities were measured. GC-7101 significantly attenuated development of acute gastric ulcer and accelerated the healing of acetic-acid-induced subchronic gastric ulcer. In HCl/EtOH-induced gastric ulcer, GC-7101 markedly enhanced gastric wall mucus content which was accompanied by increased mucosal PGE2 and NO production. Furthermore, treatment of GC-7101 exhibited anti-inflammatory and antioxidant activities as evidenced by decreased myeloperoxidase activity, NF-κB translocation, inflammatory cytokines mRNA expression, and lipid peroxidation and increased glutathione content and superoxide dismutase and catalase activities. These results demonstrated that GC-7101 possesses strong antiulcerogenic effect by modulating oxidative stress and proinflammatory mediators.
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Rathor N, Chung HK, Wang SR, Wang JY, Turner DJ, Rao JN. Caveolin-1 enhances rapid mucosal restitution by activating TRPC1-mediated Ca2+ signaling. Physiol Rep 2014; 2:2/11/e12193. [PMID: 25367694 PMCID: PMC4255804 DOI: 10.14814/phy2.12193] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Early rapid mucosal restitution occurs as a consequence of epithelial cell migration to reseal superficial wounds, a process independent of cell proliferation. Our previous studies revealed that the canonical transient receptor potential-1 (TRPC1) functions as a store-operated Ca(2+) channel (SOCs) in intestinal epithelial cells (IECs) and regulates epithelial restitution after wounding, but the exact mechanism underlying TRPC1 activation remains elusive. Caveolin-1 (Cav1) is a major component protein that is associated with caveolar lipid rafts in the plasma membrane and was recently identified as a regulator of store-operated Ca(2+) entry (SOCE). Here, we showed that Cav1 plays an important role in the regulation of mucosal restitution by activating TRPC1-mediated Ca(2+) signaling. Target deletion of Cav1 delayed gastric mucosal repair after exposure to hypertonic NaCl in mice, although it did not affect total levels of TRPC1 protein. In cultured IECs, Cav1 directly interacted with TRPC1 and formed Cav1/TRPC1 complex as measured by immunoprecipitation assays. Cav1 silencing in stable TRPC1-transfected cells by transfection with siCav1 reduced SOCE without effect on the level of resting [Ca(2+)]cyt. Inhibition of Cav1 expression by siCav1 and subsequent decrease in Ca(2+) influx repressed epithelial restitution, as indicated by a decrease in cell migration over the wounded area, whereas stable ectopic overexpression of Cav1 increased Cav1/TRPC1 complex, induced SOCE, and enhanced cell migration after wounding. These results indicate that Cav1 physically interacts with and activates TRPC1, thus stimulating TRPC1-mediated Ca(2+) signaling and rapid mucosal restitution after injury.
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Affiliation(s)
- Navneeta Rathor
- Department of Surgery, Cell Biology Group, University of Maryland School of Medicine, Baltimore, Maryland, USA Baltimore VA Medical Center, Baltimore, Maryland, USA
| | - Hee K Chung
- Department of Surgery, Cell Biology Group, University of Maryland School of Medicine, Baltimore, Maryland, USA Baltimore VA Medical Center, Baltimore, Maryland, USA
| | - Shelley R Wang
- Department of Surgery, Cell Biology Group, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jian-Ying Wang
- Department of Surgery, Cell Biology Group, University of Maryland School of Medicine, Baltimore, Maryland, USA Baltimore VA Medical Center, Baltimore, Maryland, USA Department of Pathology, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Douglas J Turner
- Department of Surgery, Cell Biology Group, University of Maryland School of Medicine, Baltimore, Maryland, USA Baltimore VA Medical Center, Baltimore, Maryland, USA
| | - Jaladanki N Rao
- Department of Surgery, Cell Biology Group, University of Maryland School of Medicine, Baltimore, Maryland, USA Baltimore VA Medical Center, Baltimore, Maryland, USA
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Proteomic Identification of Serum Proteins Associated with Stress-Induced Gastric Ulcers in Fasted Rats. Biosci Biotechnol Biochem 2014; 74:812-8. [DOI: 10.1271/bbb.90897] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lu L, Chan RLY, Luo XM, Wu WKK, Shin VY, Cho CH. Animal models of gastrointestinal inflammation and cancer. Life Sci 2014; 108:1-6. [PMID: 24825611 DOI: 10.1016/j.lfs.2014.04.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Revised: 04/20/2014] [Accepted: 04/29/2014] [Indexed: 02/06/2023]
Abstract
Inflammation and cancer are the two major disorders in the gastrointestinal tract. They are causally related in their pathogenesis. It is important to study animal models' causal relationship and, in particular, to discover new therapeutic agents for such diseases. There are several criteria for these models in order to make them useful in better understanding the etiology and treatment of the said diseases in humans. In this regard, animal models should be similar as possible to human diseases and also be easy to produce and reproducible and also economic to allow a continuous replication in different laboratories. In this review, we summarize the various animal models for inflammatory and cancerous disorders in the upper and lower gastrointestinal tract. Experimental approaches are as simple as by giving a single oral dose of alcohol or other noxious agents or by injections of multiple dosages of ulcer inducing agents or by parenteral administration or in drinking water of carcinogens or by modifying the genetic makeups of animals to produce relatively long-term pathological changes in particular organs. With these methods they could induce consistent inflammatory responses or tumorigenesis in the gastrointestinal mucosa. These animal models are widely used in laboratories in understanding the pathogenesis as well as the mechanisms of action for therapeutic agents in the treatment of gastrointestinal inflammation and cancer.
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Affiliation(s)
- L Lu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Ruby L Y Chan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - X M Luo
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - William K K Wu
- Institute of Digestive Disease, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Vivian Y Shin
- Department of Surgery, Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - C H Cho
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
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Yesilada E, Gürbüz I, Toker G. Anti-ulcerogenic activity and isolation of the active principles from Sambucus ebulus L. leaves. JOURNAL OF ETHNOPHARMACOLOGY 2014; 153:478-483. [PMID: 24632015 DOI: 10.1016/j.jep.2014.03.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 02/27/2014] [Accepted: 03/01/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sambucus ebulus L. has a very prominent place in Turkish folk medicine. Leaves of the plant are practiced externally to relieve rheumatic pain, to treat abscess, for wound healing and internally against hemorrhoids and stomachache. In a previous work, aqueous extract of the leaves was shown to possess potent antiulcerogenic activity on water immersion and immobilization-induced stress ulcer model in rats. This study aims to investigate the antiulcerogenic activity profile of the plant on various in vivo peptic ulcer models and gastric biochemical parameters and through bioassay-guided processing to isolate the active constituent (s) and to elucidate its structure. MATERIALS AND METHODS Among the subextracts obtained by successive solvent extractions from the MeOH extract of the leaves, the butanol subextract exerted significant antiulcerogenic activity against water-immersion and immobilization-induced stress ulcer model in rats as the bioassay model. This subextract was then subjected to successive chemical separation techniques (precipitation, column chromatography based on ion-exchange, silica gel and sephadex) and the activity of each fraction/subfraction was tested using the same bioassay model. After determination of active principles, further studies were performed on the active subextract by using various in vivo test models (ethanol-, serotonin-, pyloric ligation-induced ulcerogenesis) in rats as well as biochemical methods for the evaluation of antiulcerogenic potential. RESULTS Bioassay-guided fractionation procedures yielded two flavonol glycosides as the active antiulcerogenic principles. The structures of these compounds were elucidated as isorhamnetin-3-O-monoglycoside and quercetin-3-O-monoglycoside by using (1)H, (13)C-NMR, and FAB-MS techniques. CONCLUSION This study has proven the folkloric use of Sambucus ebulus leaves for the treatment of gastric ailments in Turkish folk medicine. The antiulcerogenic activity of the two flavonol glycosides isolated in the present study was not previously reported elsewhere.
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Affiliation(s)
- Erdem Yesilada
- Yeditepe University, Faculty of Pharmacy, 34755 Atasehir, Istanbul, Turkey.
| | - Ilhan Gürbüz
- Gazi University, Faculty of Pharmacy, Etiler, 06330 Ankara, Turkey
| | - Gülnur Toker
- Gazi University, Faculty of Pharmacy, Etiler, 06330 Ankara, Turkey
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Nakamura T, Ohta Y, Ikeno K, Ohashi K, Ikeno T. Protective Effect of Repeatedly Preadministered Brazilian Propolis Ethanol Extract against Stress-Induced Gastric Mucosal Lesions in Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2014; 2014:383482. [PMID: 24639881 PMCID: PMC3930185 DOI: 10.1155/2014/383482] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 12/20/2013] [Indexed: 11/17/2022]
Abstract
The present study was conducted to clarify the protective effect of Brazilian propolis ethanol extract (BPEE) against stress-induced gastric mucosal lesions in rats. The protective effect of BPEE against gastric mucosal lesions in male Wistar rats exposed to water-immersion restraint stress (WIRS) for 6 h was compared between its repeated preadministration (50 mg/kg/day, 7 days) and its single preadministration (50 mg/kg). The repeated BPEE preadministration attenuated WIRS-induced gastric mucosal lesions and gastric mucosal oxidative stress more largely than the single BPEE preadministration. In addition, the repeated BPEE preadministration attenuated neutrophil infiltration in the gastric mucosa of rats exposed to WIRS. The protective effect of the repeated preadministration of BPEE against WIRS-induced gastric mucosal lesions was similar to that of a single preadministration of vitamin E (250 mg/kg) in terms of the extent and manner of protection. From these findings, it is concluded that BPEE preadministered in a repeated manner protects against gastric mucosal lesions in rats exposed to WIRS more effectively than BPEE preadministered in a single manner possibly through its antioxidant and anti-inflammatory actions.
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Affiliation(s)
| | - Yoshiji Ohta
- Department of Chemistry, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
| | | | - Koji Ohashi
- Department of Clinical Biochemistry, Faculty of Medical Technology, Fujita Health University School of Health Sciences, Toyoake, Aichi 470-1192, Japan
| | - Takeyuki Ikeno
- Faculty of Health and Nutrition, Shubun University, Ichinomiya, Aichi 491-0938, Japan
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Amang PA, Tan PV, Patamaken SA, Mefe MN. Cytoprotective and antioxidant effects of the methanol extract of Eremomastax speciosa in rats. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES : AJTCAM 2013; 11:165-71. [PMID: 24653572 PMCID: PMC3957260 DOI: 10.4314/ajtcam.v11i1.26] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Ethno-botanical information shows that Eremomastax speciosa is used in the traditional management of various stomach complaints including gastro-duodenal ulcers. MATERIALS AND METHODS In this study, we tested the cytoprotective potential of the whole plant methanol extract (100-200 mg/kg, p.o), against HCl/ethanol, absolute ethanol, cold/restraint stress rats, and pylorus legated rats pre-treated with indomethacin. The effects of the extract on gastric lesion inhibition, the volume of gastric juice, gastric pH, gastric acid output, mucus production and gastric peptic activity were recorded. Oxidative stress parameters were measured in blood and gastric tissue samples obtained from the animals in all the models tested. RESULTS The extract significantly (p<0.05), reduced the formation of cold/restraint ulcers by (31-60%, inhibition), completely inhibited (100%) the formation of lesions induced by HCl/ethanol at the highest dose, but was less effective against absolute ethanol (22-46% inhibition). The extract (200 mg/kg), significantly reduced lesion formation (P<0.01), gastric acidity (P<0.01), and volume of gastric secretions (P<0.05), in the indomethacin/pylorus ligation model, and did not affect the activity of pepsin in gastric juice. Blood concentrations of antioxidant enzymes (catalase, SOD and GSH), increased significantly and MDA concentrations decreased in all models tested. CONCLUSION Cytoprotection by E. speciosa methanol extract was attributed to its ability to reduce acid secretion, and to enhance mucosal defence and in vivo antioxidant status.
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Affiliation(s)
- Perfusion A Amang
- Department of Animal Biology and Physiology, Faculty of Science, P.O. Box 812, University of Yaounde I, Cameroon
| | - Paul V Tan
- Department of Animal Biology and Physiology, Faculty of Science, P.O. Box 812, University of Yaounde I, Cameroon
| | - Simon A Patamaken
- Department of Animal Biology and Physiology, Faculty of Science, P.O. Box 812, University of Yaounde I, Cameroon
| | - Martial N Mefe
- Department of Animal Biology and Physiology, Faculty of Science, P.O. Box 812, University of Yaounde I, Cameroon
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Protective effect of 3,4-methylenedioxyphenol (sesamol) on stress-related mucosal disease in rats. BIOMED RESEARCH INTERNATIONAL 2013; 2013:481827. [PMID: 23984371 PMCID: PMC3741923 DOI: 10.1155/2013/481827] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 06/14/2013] [Accepted: 06/19/2013] [Indexed: 12/13/2022]
Abstract
Stress-related mucosal disease (SRMD) causes considerable morbidity and mortality in critically ill patients. 3,4-Methylenedioxyphenol (sesamol) has been reported to have potent antioxidative and anti-inflammatory properties. The aim of this study was to investigate the effect of sesamol on water immersion restraint- (WIR-) induced SRMD in rats. Rat gastric ulcer and hemorrhage were induced by WIR. Rats were pretreated orally with various doses of sesamol (0.1, 0.3, and 1 mg/kg, resp.) 30 min before WIR. Gastric mucosal ulceration, hemoglobin, lipid peroxidation, mucus secretion, proinflammatory cytokines, and nuclear factor (NF)-κB levels were determined 4 h after WIR. In addition, the infiltration of neutrophil and macrophage into gastric mucosa was also determined after WIR. Water immersion restraint increased gastric mucosal ulcer and hemorrhage, tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-6 levels but failed to affect mucosal lipid peroxidation and mucus secretion compared with non-WIR. Sesamol significantly decreased gastric ulceration and hemorrhage and inhibited mucosal TNF-α, IL-1β, and IL-6 production and NF-κB activity in WIR-treated rats. In addition, increased myeloperoxidase and CD68 levels in gastric mucosa were found in WIR-treated rats compared to non-WIR rats. Sesamol did not affect myeloperoxidase but decreased CD68 levels in mucosa in WIR-treated rats. Sesamol may protect against SRMD by inhibiting gastric mucosal proinflammatory cytokines in rats.
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Ohta Y, Chiba S, Tada M, Imai Y, Kitagawa A. Development of oxidative stress and cell damage in the liver of rats with water-immersion restraint stress. Redox Rep 2013; 12:139-47. [PMID: 17623521 DOI: 10.1179/135100007x200218] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
We examined how oxidative stress and cell damage develop in the liver of rats subjected to water-immersion stress (WIRS). In rats subjected to WIRS for 1.5, 3 or 6 h, serum alanine aminotransferase and aspartate aminotransferase activities increased time-dependently. In the liver tissue, vacuolization and apoptosis occurred at 1.5 h of WIRS and vacuolization further developed without further appearance of apoptosis at 3 h or 6 h. Serum lipid peroxide (LPO) and NOx (nitrite/nitrate) concentrations increased at 3 h of WIRS and these increases were enhanced at 6 h. In liver tissue, increases in LPO and NOx concentrations and myeloperoxidase activity and decreases in ascorbic acid and reduced glutathione concentrations and superoxide dismutase activity occurred at 3 h of WIRS and these changes were enhanced at 6 h, although vitamin E concentration and xanthine oxidase activity were unchanged. These results indicate that oxidative stress in the liver of rats with WIRS develops after the appearance of cell damage in the tissue, and suggests that oxidative stress is caused through disruption of the antioxidant defense system and increases in NO generation and neutrophil infiltration in the liver, which may contribute to the progression of cell damage in the tissue.
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Affiliation(s)
- Yoshiji Ohta
- Department of Chemistry, School of Medicine, Fujita Health University, Toyoake, Aichi, Japan
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Abstract
Peptic ulcer is among the most serious gastrointestinal diseases in the world. Several orthodox drugs are employed for the treatment of the disease. Although these drugs are effective, they produce many adverse effects thus limiting their use. In recent years, there has been a growing interest in alternative therapies, especially those from plants due to their perceived relative lower side effects, ease of accessibility, and affordability. Plant medicines with ethnomedicinal use in peptic ulcer management need to be screened for their effectiveness and possible isolation of lead compounds. This requires use of appropriate animal models of various ulcers. The limited number of antiulcer models for drug development against gastric and duodenal ulcer studies has hindered the progress of targeted therapy in this field. It is, therefore, necessary to review the literature on experimental models used to screen agents with potential antigastroduodenal ulcer activity and explain their biochemical basis in order to facilitate their use in the development of new preventive and curative antiulcer drugs. Clinical trials can then be carried out on agents/drugs that show promise. In this paper, current in vivo animal models of ulcers and the pathophysiological mechanisms underlying their induction, their limitations, as well as the challenges associated with their use have been discussed.
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Evaluation on the Pharmacological Effect of Traditional Chinese Medicine SiJunZiTang on Stress-Induced Peptic Ulcers. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:186076. [PMID: 23840247 PMCID: PMC3694386 DOI: 10.1155/2013/186076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 05/09/2013] [Accepted: 05/20/2013] [Indexed: 11/17/2022]
Abstract
Purpose. To explore the effects of SiJunZiTang (SJZT) on central neurotransmitters and the inhibition of HCl hypersecretion, along with the role of the vagus nerve. From this, the effects of SJZT and its constituent ingredients on inhibiting stress-induced peptic ulcers will be determined. Methods. Methods used to determine SJZT's effectiveness included (1) measuring the antipeptic ulcer effects of varying combinations of the constituents of SJZT; (2) evaluations of monoamine (MA) level in the brain; and (3) measuring the effects of longer-term SJZT treatment. Results. Comparing the control and experimental groups where the rats' vagus nerves were not cut after taking SJZT orally (500 mg/kg and 1000 mg/kg), the volume of enterogastric juice, free HCl and total acidity all reduce dose-dependently. The group administered SJZT at 1000 mg/kg showed significant reductions (P < 0.05). For the experimental groups where the vagus nerves were cut, a comparison with the control group suggests that the group receiving SJZT (500 mg/kg) orally for 21 days demonstrated a cure rate of 34.53%. Conclusion. The results display a correlation between the therapeutic effects of SJZT on stress-induced peptic ulcers and central neurotransmitter levels. Further to this, SJZT can inhibit the hypersecretion of HCl in the stomach, thus inhibiting stress-induced peptic ulcers.
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Jin L, Qin L, Xia D, Liu X, Fan Z, Zhang C, Gu L, He J, Ambudkar IS, Deng D, Wang S. Active secretion and protective effect of salivary nitrate against stress in human volunteers and rats. Free Radic Biol Med 2013; 57:61-7. [PMID: 23277147 PMCID: PMC4059197 DOI: 10.1016/j.freeradbiomed.2012.12.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 11/16/2012] [Accepted: 12/17/2012] [Indexed: 02/06/2023]
Abstract
Up to 25% of the circulating nitrate in blood is actively taken up, concentrated, and secreted into saliva by the salivary glands. Salivary nitrate can be reduced to nitrite by the commensal bacteria in the oral cavity or stomach and then further converted to nitric oxide (NO) in vivo, which may play a role in gastric protection. However, whether salivary nitrate is actively secreted in human beings has not yet been determined. This study was designed to determine whether salivary nitrate is actively secreted in human beings as an acute stress response and what role salivary nitrate plays in stress-induced gastric injury. To observe salivary nitrate function under stress conditions, alteration of salivary nitrate and nitrite was analyzed among 22 healthy volunteers before and after a strong stress activity, jumping down from a platform at the height of 68 m. A series of stress indexes was analyzed to monitor the stress situation. We found that both the concentration and the total amount of nitrate in mixed saliva were significantly increased in the human volunteers immediately after the jump, with an additional increase 1h later (p<0.01). Saliva nitrite reached a maximum immediately after the jump and was maintained 1h later. To study the biological functions of salivary nitrate and nitrite in stress protection, we further carried out a water-immersion-restraint stress (WIRS) assay in male adult rats with bilateral parotid and submandibular duct ligature (BPSDL). Intragastric nitrate, nitrite, and NO; gastric mucosal blood flow; and gastric ulcer index (UI) were monitored and nitrate was administrated in drinking water to compensate for nitrate secretion in BPSDL animals. Significantly decreased levels of intragastric nitrate, nitrite, and NO and gastric mucosal blood flow were measured in BPSDL rats during the WIRS assay compared to sham control rats (p<0.05). Recovery was observed in the BPSDL rats upon nitrate administration. The WIRS-induced UI was significantly higher in the BPSDL animals compared to controls, and nitrate administration rescued the WIRS-induced gastric injury in BPSDL rats. In conclusion, this study suggests that stress promotes salivary nitrate secretion and nitrite formation, which may play important roles in gastric protection against stress-induced injury via the nitrate-dependent NO pathway.
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Affiliation(s)
- Luyuan Jin
- Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing 100050, People’s Republic of China
| | - Lizheng Qin
- Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing 100050, People’s Republic of China
| | - Dengsheng Xia
- Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing 100050, People’s Republic of China
| | - Xibao Liu
- Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892-1190, USA
| | - Zhipeng Fan
- Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing 100050, People’s Republic of China
| | - Chunmei Zhang
- Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing 100050, People’s Republic of China
| | - Liankun Gu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Division of Etiology, Peking University Cancer Hospital and Institute, Beijing 100142, People’s Republic of China
| | - Junqi He
- Department of Biochemistry and Molecular Biology, Capital Medical University School of Basic Medicine, Beijing 100069, People’s Republic of China
| | - Indu S. Ambudkar
- Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892-1190, USA
| | - Dajun Deng
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Division of Etiology, Peking University Cancer Hospital and Institute, Beijing 100142, People’s Republic of China
- Corresponding author. Fax: +86 10 88122437
| | - Songlin Wang
- Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing 100050, People’s Republic of China
- Department of Biochemistry and Molecular Biology, Capital Medical University School of Basic Medicine, Beijing 100069, People’s Republic of China
- Corresponding author at: Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing 100050, People’s Republic of China. Fax: +86 10 67062012
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Padol IT, Wang C, Hunt RH. Altered physiology of acid secretion in depression-prone Flinders rats results in exacerbated NSAID and stress-induced gastric damage. Neurogastroenterol Motil 2012; 24:154-63, e89. [PMID: 22082353 DOI: 10.1111/j.1365-2982.2011.01811.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Flinders Sensitive Line (FSL) rats are characterized by hypersensitivity to cholinergic stimuli and have been extensively used for studying depressive disorders. A link between depression and peptic ulcers has long been established; however, there is a lack of data from animal models. METHODS We studied the physiology of acid secretion in FSL and Flinders Resistant Line (FRL) rats in vivo and in vitro. We also examined the susceptibility of Flinders rats to water immersion restraint stress (WIRS) or NSAID-induced gastric damage and explored the effect of an anticholinergic agent, atropine, in reversing this effect. KEY RESULTS Basal acid output was more than twofold greater in FSL compared with FRL rats in vivo, 213.5 and 92.8 μEq/3 h/100 g (P = 0.02), respectively. Carbachol was a more potent secretagog in vitro, and somatostatin was a less potent inhibitory agent, while paradoxically stimulating acid secretion over and above the carbachol response in gastric glands from FSL rats. The FSL rats were more susceptible to indomethacin and WIRS-induced gastric mucosal damage compared with FRL rats. Atropine reduced acid output, which resulted in a reduction in indomethacin and stress-induced gastric damage in FSL rats. CONCLUSIONS & INFERENCES Our study, for the first time, demonstrates that the altered vagally mediated physiology of acid secretion in depression-prone FSL rats contributes to gastric hypersecretion and, consequently, results in exacerbated stress and NSAID-induced gastric damage. Flinders rats may be a useful animal model for studying acid-related and also gastrointestinal functional disorders in depression.
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Affiliation(s)
- I T Padol
- Farncombe Family Digestive Health Research Institute, Division of Gastroenterology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
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Murakami S, Takayama F, Egashira T, Imao M, Mori A. Protective effect of fermented papaya preparation on stress-induced acute gastric mucosal lesion. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/jbpc.2012.34038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Ohta Y, Yashiro K, Hidaka M, Honda M, Imai Y, Ohashi K, Fukuzawa K. A single exposure of rats to water-immersion restraint stress induces oxidative stress more severely in the thymus than in the spleen. Redox Rep 2012; 17:200-5. [PMID: 23068966 PMCID: PMC6837657 DOI: 10.1179/1351000212y.0000000023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
OBJECTIVES We examined whether a single exposure of rats to water-immersion restraint stress (WIRS) induces oxidative stress in the thymus and spleen. METHODS Vitamin E, ascorbic acid, reduced glutathione (GSH), and lipid peroxide (LPO) were assayed in the thymus and spleen of rats with and without 6 hours of WIRS. RESULTS In unstressed rats, vitamin E, ascorbic acid, GSH, and LPO levels were higher in the thymus than in the spleen. Thymic ascorbic acid level was lower in stressed rats than in unstressed rats. Splenic ascorbic acid level was similar in both groups. Thymic and splenic GSH levels were lower in stressed rats than in unstressed rats but the reduced amount of GSH was lower in the spleen than in the thymus. Thymic vitamin E level was lower in stressed than in unstressed rats. Splenic vitamin E level was higher in stressed rats than in unstressed rats. Thymic and splenic LPO levels were higher in stressed rats than in unstressed rats but the increased amount of LPO was higher in the thymus than in the spleen. CONCLUSION It is indicated that a single expose of rats to WIRS induces oxidative stress more severely in the thymus than in the spleen.
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Affiliation(s)
- Yoshiji Ohta
- Fujita Health University School of Medicine, Toyoake, Japan.
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Sireeratawong S, Khonsung P, Piyabhan P, Nanna U, Soonthornchareonnon N, Jaijoy K. Anti-inflammatory and anti-ulcerogenic activities of Chantaleela recipe. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES : AJTCAM 2012; 9:485-94. [PMID: 23983384 DOI: 10.4314/ajtcam.v9i4.5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Chantaleela recipe is indicated for relieving fever in Thai traditional folk medicine. In the present study, Chantaleela recipe was investigated for anti-inflammatory, analgesic, antipyretic and anti-ulcerogenic activities. In preliminary investigation Chantaleela recipe was found to exert an inhibitory activity on the acute phase of inflammation as seen in ethyl phenylpropiolate-induced ear edema as well as in carrageenan-induced hind paw edema in rats. The results suggest that the anti-inflammatory activity of Chantaleela recipe may be due to an inhibition via cyclooxygenase pathway. In the analgesic test, Chantaleela recipe showed a significant analgesic activity in both the early and late phases of formalin test, but exerted the most pronounced effect in the late phase. The analgesic activity of Chantaleela recipe may act via mechanism at peripheral and partly central nervous system. In antipyretic test, Chantaleela recipe significantly decreased rectal temperature of brewer's yeast-induced hyperthermia rats, probably by inhibiting synthesis and/or release of prostaglandin E₂ in the hypothalamus. Therefore, the key mechanism of anti-inflammatory, analgesic, and antipyretic activity of the Chantaleela recipe likely involves the inhibition of the synthesis and/or release of inflammatory or pain mediators, especially prostaglandins. The oral administration of the Chantaleela recipe reduced ulcer formation in acute gastric ulcer models (EtOH/HCl-, indomethacin-, and stress-induced gastric lesions). In contrast, this recipe did not reduce the secretory rate, total acidity, and increase pH in rat stomach. These results indicated that Chantaleela seem to possess anti-ulcerogenic effect. This activity may be due to the increase of gastric mucosal resistance or potentiation of defensive factors and/or the decrease of aggressive factors but did not associate the anti-secretory activity. Moreover, the high oral doses treated did not cause acute toxicity in rats and the long term oral administration did not produce gastric and ileum lesions.
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Affiliation(s)
- Seewaboon Sireeratawong
- Division of Pharmacology, Department of Preclinical Science, Faculty of Medicine, Thammasat University, Pathum Thani 12120, Thailand.
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Adachi M, Horiuchi G, Ikematsu N, Tanaka T, Terao J, Satouchi K, Tokumura A. Intragastrically administered lysophosphatidic acids protect against gastric ulcer in rats under water-immersion restraint stress. Dig Dis Sci 2011; 56:2252-61. [PMID: 21298479 DOI: 10.1007/s10620-011-1595-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2010] [Accepted: 01/21/2011] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM Lysophosphatidic acid exerts important physiological effects on many types of animal cells through its specific binding to several G protein-coupled receptors. In particular, its potent wound-healing effect has attracted much attention. To determine whether lysophosphatidic acids in a foodstuff and Chinese medicine are effective in protecting against gastric ulcer, we subjected rats to water-immersion restraint stress. METHODS AND RESULTS Three direct administrations of a solution of lysophosphatidic acid with a C18 fatty acyl group to the rat stomach in a concentration range of 0.001-0.1 mM resulted in a significant reduction in the number of gastric ulcers induced during water-immersion restraint stress, and the potencies were as follows: linoleoyl species=α-linolenoyl species>oleoyl species. Intragastric administrations of a solution of highly purified lysophosphatidic acid from soybean lecithin significantly protected against the stress-induced gastric ulcers at lower concentrations than partially purified lysophosphatidic acid from soybean lecithin did. In addition, administration of a decocted solution of antyu-san, and lysophosphatidic acid-rich Chinese medicine, to the stomach was more effective in protecting against stress-induced ulcer than decoctations of antyu-san lacking the corydalis tuber component that is rich in lysophosphatidic acid. CONCLUSIONS These results clearly show that lysophosphatidic acid is the effective component of soybean lecithin and antyu-san in protection against stress-induced gastric ulcer in the rat model, and suggest that daily intake of lysophosphatidic acid-rich foods or Chinese medicines may be beneficial for prevention of stress-induced gastric ulcer in human subjects.
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Affiliation(s)
- Mika Adachi
- Department of Pharmaceutical Health Chemistry, Institute of Health Biosciences, University of Tokushima Graduate School, 1-78-1 Shomachi, Tokushima, 770-8505, Japan.
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Campioli E, Carnevale G, Avallone R, Guerra D, Baraldi M. Morphological and receptorial changes in the epididymal adipose tissue of rats subjected to a stressful stimulus. Obesity (Silver Spring) 2011; 19:703-8. [PMID: 20948513 DOI: 10.1038/oby.2010.244] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Obesity is nowadays related to other pathological conditions such as inflammation, insulin resistance, and diabetes, but little is known about the relationship between psychological stress and adipocytes. We decided to study the expression of the translocator protein (TSPO) 18-kDa, peroxisome proliferator-activated receptor-γ (PPAR-γ), mitochondrial uncoupling protein-1 (UCP-1), and adipocyte morphology in the adipose tissue of rats subjected to stress conditions. In our model of stress, rats fasted for 24 h were placed in a restraint cage and then immersed vertically to the level of the xiphoid process in a water bath at 23 °C for 7 h. After that period, we removed the epididymal adipose tissues for the subsequent analysis. The optical and electron microscopy revealed that adipocytes of control rats formed a continuous epithelial-like cell layer; on the contrary in the adipocytes of stressed rats some cells have merged together and the number of vessels formed seems to increase. Stressed adipocytes presented unilocular cells with numerous mitochondria with a morphology ranging between that of brown adipose tissue (BAT) and white adipose tissue (WAT). Interestingly, when we investigated the subcellular distribution of UCP-1 by immunogold electron microscopy, the adipose tissue of stressed rats was positive for UCP-1. From the immunoblot analysis with anti-PPAR-γ antibody, we observed an increased expression of PPAR-γ in the adipocytes of stressed group compared with control group (P < 0.05). Stress induced the expression of TSPO 18-kDa receptor (B(max) = 106.45 ± 5.87 fmol/mg proteins), which is undetectable by saturation-binding assay with [(3)H]PK 11195 in the control group.
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Affiliation(s)
- Enrico Campioli
- Department of Biomedical Sciences, University of Modena and Reggio Emilia, Modena, Italy
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