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Aly MH, Said AK, Farghaly AM, Eldaly DA, Ahmed DS, Gomaa MH, Elgebaly NH, Sameh O, Elahwany SK, Ebrahem TT, Sameh Y, Wally ME. Protective effect of astaxanthin on indomethacin-induced gastric ulcerations in mice. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03206-4. [PMID: 38940848 DOI: 10.1007/s00210-024-03206-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Accepted: 05/31/2024] [Indexed: 06/29/2024]
Abstract
Gastric ulcer disease remains one of the common medical burdens affecting millions worldwide due to its prevalent risk factors with the chronic usage of non-steroidal anti-inflammatory drugs at the top, reportedly through the stimulation of oxidative stress and triggering of inflammatory and apoptotic cascades in the gastric mucosa. Astaxanthin, a dietary keto-carotenoid derived from marine organisms is gaining a wide interest as a nutraceutical for its pronounced antioxidant properties. Here, we aim to examine the potential modulatory role of astaxanthin on indomethacin-induced gastric ulceration in experimental mice. Twenty-four Swiss albino mice were randomly distributed into four groups: a control group, an indomethacin group, and two groups pre-treated with either omeprazole or astaxanthin. The gastric tissues were assessed using gross morphology, ulcer scoring, gastric juice acidity, as well as reduced glutathione (GSH) and malondialdehyde (MDA) levels. Histopathological examination and immunostaining for nuclear factor-kappa B (NF-κB) and caspase-3 levels were also employed. Indomethacin group tended to show a higher number of mucosal ulcerations relative to control and pre-treated groups. The indomethacin group also showed significantly lower GSH levels and higher MDA levels relative to control. Immunostaining of gastric tissue sections showed a higher reactivity to NF-κB and caspase-3 in indomethacin group. Astaxanthin pre-treatment significantly elevated gastric juice pH, normalized GSH levels, and lowered the indomethacin-induced elevations in MDA, NF-κB, and caspase-3 levels. These results indicate that astaxanthin exhibits a comparable protective effect to omeprazole, against indomethacin-induced gastric ulceration. This anti-ulcerogenic effect could be mediated through its antioxidant, anti-inflammatory, and anti-apoptotic modulatory activities.
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Affiliation(s)
- Mohamed H Aly
- Pharmacology Department, Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt.
- Health Research Center of Excellence; Drug Research and Development Group, Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt.
| | - Aya K Said
- Pharmacology Department, Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
- Health Research Center of Excellence; Drug Research and Development Group, Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
| | - Aya M Farghaly
- Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
| | - Dalia A Eldaly
- Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
| | - Dina S Ahmed
- Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
| | - Maram H Gomaa
- Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
| | - Nazih H Elgebaly
- Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
| | - Omar Sameh
- Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
| | - Salma K Elahwany
- Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
| | - Tasneem T Ebrahem
- Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
| | - Youssif Sameh
- Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt
| | - Maha E Wally
- Pharmacology Department, Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt.
- Health Research Center of Excellence; Drug Research and Development Group, Faculty of Pharmacy, The British University in Egypt, Cairo, 11837, Egypt.
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Taheri Mirghaed M, Ghasemian SO, Mousavi Nasab SF, Rahimi K. Effects of fish oil on ethanol-induced gastric ulcer in rats: inflammatory responses and oxidative stress. Ann Med Surg (Lond) 2024; 86:819-825. [PMID: 38333309 PMCID: PMC10849447 DOI: 10.1097/ms9.0000000000001550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 11/18/2023] [Indexed: 02/10/2024] Open
Abstract
Background The prevalence of peptic ulcers is increasing due to lifestyle changes and harmful diets. Objective The aim of this study was to investigate the effect of fish oil (FO) on gastric ulcers induced by ethanol in rats. Methods The pharmacological efficacy of FO with doses of 5 and 10 mg/kg investigated using the gastric ulcer index, the acidity of gastric secretions, pro-inflammatory cytokine assessment, and oxidative stress examination. Results Ethanol-induced gastric ulcer improves with FO 5 or 10 mg/kg pretreatment (P<0.05). FO did have acid-neutralizing activity. FO also increased the levels of glutathione and catalase and decreased the malondialdehyde levels (P<0.05). Moreover, FO reduced the levels of tumour necrosis factor alpha (TNF-α) interleukin-6 (IL-6), through downregulation of nuclear factor kappa B (NF-κB) (P<0.05). Pretreatment with FO attenuates ethanol-induced gastric ulceration. Conclusion The observed effects may be due to the role of FO in regulating gastric secretions, changes in the expression of NF-κB, and changes in the levels of oxidative stress factors.
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Affiliation(s)
| | | | | | - Kaveh Rahimi
- Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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Miao Z, Yu X, Zhang L, Zhu L, Sheng H. UPLC-Q-Exactive Orbitrap-MS and network pharmacology for deciphering the active compounds and mechanisms of stir-fried Raphani Semen in treating functional dyspepsia. Technol Health Care 2024; 32:2353-2379. [PMID: 38517816 DOI: 10.3233/thc-231122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
BACKGROUND As a traditional digestive medicine, stir-fried Raphani Semen (SRS) has been used to treat food retention for thousands of years in China. Modern research has shown that SRS has a good therapeutic effect on functional dyspepsia (FD). However, the active components and mechanism of SRS in the treatment of FD are still unclear. OBJECTIVE The purpose of this study is to elucidate the material basis and mechanism of SRS for treating FD based on UPLC-Q-Exactive Orbitrap MS/MS combined with network pharmacology and molecular docking. METHODS The compounds of SRS water decoction were identified by UPLC-Q-Exactive Orbitrap MS/MS and the potential targets of these compounds were predicted by Swiss Target Prediction. FD-associated targets were collected from disease databases. The overlapped targets of SRS and FD were imported into STRING to construct Protein-Protein Interaction (PPI) network. Then, the Metascape was used to analyze Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway after introducing overlapped targets. Finally, the active components and core targets were obtained by analyzing the "component-target-pathway" network, and the affinity between them was verified by molecular docking. RESULTS 53 components were identified, and 405 targets and 1487 FD-related targets were collected. GO and KEGG analysis of 174 overlapped targets showed that SRS had important effects on hormone levels, serotonin synapses, calcium signaling pathway and cAMP signaling pathway. 7 active components and 15 core targets were screened after analyzing the composite network. Molecular docking results showed that multiple active components had high affinity with most core targets. CONCLUSION SRS can treat FD through a variety of pathways, which provides a direction for the modern application of SRS in FD treatment.
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Affiliation(s)
- Zhuang Miao
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Xinyue Yu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Lizhen Zhang
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Liqiao Zhu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Huagang Sheng
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
- Key Laboratory of Traditional Chinese Medicine Classical Theory, Ministry of Education, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
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Amelia R, Sumiwi SA, Saptarini NM, Levita J. Chitin Extracted from the Shell of Blue Swimming Crabs ( Portunus pelagicus Linn.) Inhibits NF-kappaB p65 in Ethanol-Induced Gastric Ulcerative Wistar Rats. Mar Drugs 2023; 21:488. [PMID: 37755101 PMCID: PMC10533015 DOI: 10.3390/md21090488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/09/2023] [Accepted: 09/09/2023] [Indexed: 09/28/2023] Open
Abstract
Peptic ulcer disease is generated by the activation of NF-kappaB activity. A recent clinical study reported a significant increase in NF-kappaB2 gene expression in 79 samples of peptic ulcer patients compared to the control group. Moreover, the deacetylated chitin could alter the translocation of NF-kappaB p65 to the nucleus. Considering this, our work aims to explore the effect of chitin extracted from the shell of blue swimming crabs (Portunus pelagicus Linn.) towards NF-kappaB p65 levels in ethanol-induced gastric ulcerative Wistar rats. The shells are found abundantly as the waste of seafood processing in the northern part of West Java, Indonesia. In this study, chitin extraction was carried out using the microwave-assisted extraction method by employing choline chloride (C5H14ClNO) and DL-malic acid (C₄H₆O₅) as the solvents. The inhibitory activity assay of chitin on the expression of NF-kappaB p65 was performed by using Western blot. The extraction yielded a good quality of chitin with a deacetylation degree of 30.8026%, molecular weight of 3.35 × 105 Da, and a negligible heavy metals level. Moreover, chitin extract at doses of 150, 300, and 600 mg/kg BW significantly reduced the percentage of gastric ulcer index compared to the negative control group. Meanwhile, chitin extract at doses of 300 and 600 mg/kg BW significantly inhibited NF-kappaB expression compared to the negative control group. Histopathological examination demonstrated a decrease in the number of necrotic cells and fat degeneration in the gastric mucosa and an increase in normal cells. Taken together, chitin extract obtained from the shells of blue swimming crabs may be able to prevent gastric ulcers induced by ethanol via the inhibition of NF-kappaB p65; however, further studies are needed to verify its anti-ulcerative properties.
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Affiliation(s)
- Renny Amelia
- Department of Pharmacology, School of Pharmacy Muhammadiyah Cirebon, Cirebon 45153, West Java, Indonesia
| | - Sri Adi Sumiwi
- Department of Pharmacology and Clinical Pharmacy, Padjadjaran University, Sumedang 45363, West Java, Indonesia;
| | - Nyi Mekar Saptarini
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Padjadjaran University, Sumedang 45363, West Java, Indonesia;
| | - Jutti Levita
- Department of Pharmacology and Clinical Pharmacy, Padjadjaran University, Sumedang 45363, West Java, Indonesia;
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Ali DE, Abd el-Aziz MM, Ibrahim SSA, Sheta E, Abdel-Sattar E. Gastroprotective and anti-Helicobacter pylori potentials of essential oils from the oleoresins of Araucaria bidwillii and Araucaria heterophylla. Inflammopharmacology 2023; 31:465-483. [PMID: 36542210 PMCID: PMC9768391 DOI: 10.1007/s10787-022-01112-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022]
Abstract
Plant resins or oleoresins comprise a chemically complex mixture of different classes of compounds. Oleoresin of the genus Araucaria combines essential oil (EO) and resin. It possesses gastroprotective, cytotoxic, and timicrobial, antipyretic, and anti-inflammatory activities. The study aimed to investigate the EOs from the oleoresins of two Araucaria species, A. bidwillii and A. heterophylla, chemically and biologically for their gastroprotective, anti-inflammatory, antioxidant, and anti-Helicobacter pylori potentials. The chemical composition of both species cultivated in Egypt was analyzed with GC-MS and compared with those cultivated abroad using principal component analysis (PCA). There were 37 and 17 secondary metabolites identified in A. heterophylla and A. bidwillii, respectively. The EOs of both species showed a pronounced inhibitory effect on Helicobacter pylori activity in vitro. The gastroprotective effect was assessed in vivo using ethanol-induced gastric ulcer model in rats. Inflammatory cytokines, oxidative stress, and the nuclear factor-kappa B (NF-κB) biomarkers were assessed in the stomach tissues. The ulcer index and percentage of ulcer protection were determined. Stomach sections were examined histopathologically by staining with (H/E) and periodic acid Schiff (PAS). Moreover, the proliferative index was determined using the Ki-67 immunostaining. The treatment of rats with EOs (50, 100, and 200 mg/kg, orally) 1 hour prior to ethanol administration showed promising gastroprotective, anti-inflammatory, and antioxidant potentials. These findings declared the gastroprotective role played by both EOs with the superiority of A. bidwillii over A. heterophylla via modulation of oxidative stress/NF-κB/inflammatory cytokines. Their use can be recommended to protect against the recurrence of peptic ulcers.
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Affiliation(s)
- Dalia E. Ali
- Department of Pharmacognosy and Natural Products, Faculty of Pharmacy, Pharos University in Alexandria, Alexandria, Egypt
| | - Marwa M. Abd el-Aziz
- The Regional Center for Mycology and Biotechnology, Al-Azhar University, Cairo, Egypt
| | | | - Eman Sheta
- Department of Pathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Essam Abdel-Sattar
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, El-Kasr El-Aini St, Cairo, 11562, Egypt.
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Chen Y, Lyu K, Lu J, Jiang L, Zhu B, Liu X, Li Y, Liu X, Long L, Wang X, Xu H, Wang D, Li S. Biological response of extracorporeal shock wave therapy to tendinopathy in vivo (review). Front Vet Sci 2022; 9:851894. [PMID: 35942112 PMCID: PMC9356378 DOI: 10.3389/fvets.2022.851894] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 07/04/2022] [Indexed: 11/16/2022] Open
Abstract
Tendinopathy is a degenerative disease of the tendons caused by prolonged overstretching or overuse of the tendons. It accounts for a large proportion of musculoskeletal disorders which can occur in all age groups. The management of tendinopathy is typically conservative. In clinical practice, when other conservative treatments fail, extracorporeal shock wave therapy (ESWT) is normally used as an efficient alternative to surgical management. Several basic studies have shown that ESWT with lower energy flux densities can produce some biological responses in vivo to tendinopathy and may accelerate the initiation of the healing process in injured tendons. ESWT has a positive impact on the interactive chain of biological response, enhancing the signaling pathways of angiogenesis through mechanical conduction, and promoting cell proliferation and collagen formation. Finally, it helps tissue regeneration by controlling inflammation. The purpose of this review is to summarize the biological responses generated by ESWT in tendinopathy through a comprehensive review of the published literature. Although ESWT has been used clinically for the treatment of tendinopathies for nearly decades, less is known about the experimental studies of its biological effects on tendon tissue. Further studies on the biological response of ESWT for tendon injuries in vivo are needed in the future in order to provide better management to patients.
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Affiliation(s)
- Yixuan Chen
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Kexin Lyu
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Jingwei Lu
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Li Jiang
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Bin Zhu
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Xueli Liu
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Yujie Li
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Xinyue Liu
- School of Physical Education, Southwest Medical University, Luzhou, China
| | - Longhai Long
- The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Xiaoqiang Wang
- The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
| | - Houping Xu
- The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
- Houping Xu
| | - Dingxuan Wang
- School of Physical Education, Southwest Medical University, Luzhou, China
- Dingxuan Wang
| | - Sen Li
- The Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, China
- *Correspondence: Sen Li
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Ma N, Sun Y, Yi J, Zhou L, Cai S. Chinese sumac (Rhus chinensis Mill.) fruits alleviate indomethacin-induced gastric ulcer in mice by improving oxidative stress, inflammation and apoptosis. JOURNAL OF ETHNOPHARMACOLOGY 2022; 284:114752. [PMID: 34662665 DOI: 10.1016/j.jep.2021.114752] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/05/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE According to traditional Chinese medicine and a previous literature, many parts of Chinese sumac (Rhus chinensis Mill.), including fruits, are used as traditional herb to prevent or cure many diseases, such as inflammation, diarrhea, malaria, and other acute or chronic gastrointestinal diseases. However, the effects of the fruits on the prevention of gastric ulcer and the underlying mechanisms have not been reported. AIM OF THE STUDY This experiment aimed to investigate the preventive effect of ethanol extract (RM) from Chinese sumac fruits on indomethacin-induced gastric ulcer in mice and the underlying mechanisms. MATERIALS AND METHODS A single gavage of indomethacin was used to induce a gastric ulcer model in Kunming male mice. According to the results of histopathological analysis, immunohistochemistry and immunofluorescence analysis, as well as the expression of prostaglandin E-2, antioxidant enzymes and cytokines, the protective effect of RM on indomethacin-induced gastric ulcer was evaluated. The expression levels of several key proteins involved in oxidative stress, inflammation and apoptosis in gastric tissue were detected to illuminate the underlying mechanisms. RESULTS RM significantly reduced the ulcer index and pepsin activity, improved the microstructure of gastric mucosa and the prostaglandin E-2 content, restored the levels of glutathione and superoxide dismutase, and decreased the contents of malondialdehyde, advanced oxidation protein products, TNF-α, IL-1 β and IL-6. Further experimental results showed that RM could improve the expression levels of HO-1 and NQO1 by activating the Nrf2 protein pathway to alleviate oxidative stress in gastric tissue. At the same time, RM significantly down-regulated the expressions of p-NF-κB, p-IκBα and iNOS to relieve inflammatory response, and inhibited the cellular apoptosis of gastric tissue by up-regulating Bcl-2 and down-regulating Bax and cleaved Caspase-3. CONCLUSIONS The current work clarified that the ethanol extract from Chinese sumac fruits can improve the oxidative stress level, inflammatory response and cell apoptosis in gastric tissue by interfering with the expressions of several key regulatory proteins to prevent indomethacin-induced gastric ulcer in mice. This study may provide some insights and scientific evidence on the application of Chinese sumac fruits as a traditional herb to prevent or alleviate gastric ulcer.
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Affiliation(s)
- Nan Ma
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province, 650500, People's Republic of China.
| | - Yilin Sun
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province, 650500, People's Republic of China.
| | - Junjie Yi
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province, 650500, People's Republic of China.
| | - Linyan Zhou
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province, 650500, People's Republic of China.
| | - Shengbao Cai
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan Province, 650500, People's Republic of China.
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El Badawy SA, Ogaly HA, Abd-Elsalam RM, Azouz AA. Benzyl isothiocyanates modulate inflammation, oxidative stress, and apoptosis via Nrf2/HO-1 and NF-κB signaling pathways on indomethacin-induced gastric injury in rats. Food Funct 2021; 12:6001-6013. [PMID: 34037056 DOI: 10.1039/d1fo00645b] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The present study investigated the gastroprotective activity of benzyl isothiocyanates (BITC) on indomethacin (IND)-induced gastric injury in a rat model and explicated the possible involved biochemical, cellular, and molecular mechanisms. The rat model with gastric ulcers was established by a single oral dose of IND (30 mg per kg b.wt). BITC (0.75 and 1.5 mg kg-1) and esomeprazole (20 mg per kg b.wt) were orally administered for 3 weeks to rats before the induction of gastric injury. Compared with the IND group, BITC could diminish both the macroscopic and microscopic pathological morphology of gastric mucosa. BITC significantly preserved the antioxidants (glutathione GSH, superoxide dismutase SOD), nitric oxide (NO), and prostaglandin E2 (PGE2) contents, while decreasing the gastric mucosal malondialdehyde (MDA), tumor necrosis factor alpha (TNFα), and myeloperoxidase (MPO) contents. Moreover, BITC remarkably upregulated the expression of nuclear factor erythroid 2-related factor 2 (Nrf2), hemoxygenase-1 (HO-1), and NAD(P)H : quinone oxidoreductase (NQO1). In addition, BITC activates the expression of heat shock protein 70 (HSP-70) and downregulated the expression of nuclear factor-κB (NF-κB) and caspase-3 to promote gastric mucosal cell survival. To the best of our knowledge, this study is the first published report to implicate the suppression of inflammation, oxidative stress, and Nrf2 signaling pathway as a potential mechanism for the gastroprotective activity of BITC.
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Affiliation(s)
- Shymaa A El Badawy
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Hanan A Ogaly
- Department of Chemistry, College of Science, King Khalid University, Abha, Saudi Arabia. and Department of Biochemistry, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Reham M Abd-Elsalam
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Asmaa A Azouz
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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Kadasah S, Al Eid AS, Alawad SS, Al Shahrani AS, Alruwaihi AS, Elfaki I, Arshaduddin M. Gastro protecting influence of Topiramate in ethanol produced gastric ulcers in rats. Toxicol Rep 2021; 8:1031-1039. [PMID: 34036049 PMCID: PMC8138487 DOI: 10.1016/j.toxrep.2021.05.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 03/21/2021] [Accepted: 05/10/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Topiramate (TPM), an antiepileptic drug, is also effective against alcohol dependency, a crucial factor in forming gastric ulcers. There is an increased possibility of patients with compromised gastric conditions getting exposed to TPM, but its effect on gastric ulcers is unknown. This study investigates the implication of acute TPM in ethanol-produced gastric ulceration in rats. MATERIAL AND METHODS The effect of TPM studied in male 200-225 g Sprague Dawley rats against ethanol-induced gastric ulcers and for gastric secretion and acidity. The factors assessed include gastric secretion and acidity, gastric ulcer score, biochemical and histological changes, NF-kB, and p53 expression. The analysis of data performed by using the Kruskal Wallis test and Dunnett's multiple comparison tests. RESULTS TPM pretreatment showed gastroprotective effects. It significantly reduced ethanol-induced increased gastric secretion, acidity, and gastric ulcer index and prevented gastric mucus depletion. The ethanol-induced inflammation and apoptosis were also significantly decreased by reducing the increased gastric myeloperoxidase activity and the expression of NF-kB and p53. TPM pretreatment also reduced the ethanol-induced damage to the gastric histology in rats. CONCLUSION TPM exerted a gastro-protective effect against ethanol-induced gastric ulcers mediated by reducing the gastric ulcer index, preventing a decrease of the mucus levels, reduction in inflammation, damage to gastric histology, and a decrease in the enhanced expression of NF-kB and TPM. Further detailed investigations are essential to understand the chronic influence of TPM on gastric ulcers.
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Affiliation(s)
- Saeed Kadasah
- Department of Psychiatry, PSMMC, Riyadh, Saudi Arabia
| | | | | | | | | | - Ibrahim Elfaki
- Scientific Research Center, Medical Services Department of the Armed Forces, Riyadh, Saudi Arabia
| | - Mohammed Arshaduddin
- Scientific Research Center, Medical Services Department of the Armed Forces, Riyadh, Saudi Arabia
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Aboul Naser A, Younis E, El-Feky A, Elbatanony M, Hamed M. Management of Citrus sinensis peels for protection and treatment against gastric ulcer induced by ethanol in rats. Biomarkers 2020; 25:349-359. [PMID: 32319821 DOI: 10.1080/1354750x.2020.1759693] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Introduction: Stomach ulcer is one of the most prevalent disorders worldwide. The study was aimed to isolate and characterize the major polymethoxylated flavonoids in Citrus sinensis peels petroleum ether extract and investigate its protective and curative effect on gastric ulcer.Material and methods: Some spectral analyses were used for identification of the isolated compounds from the petroleum ether extract of Citrus sinensis peels. One oral dose (0.5 ml/100 g b.wt.) of absolute ethanol was orally given to rats after starvation for 24 h to induce gastric ulcer. To explore the protective and curative role of the plant extract, it was orally (250 mg/kg b.wt.) given for 1 week either before or post-ulcer induction. A reference drug, ranitidine (100 mg/kg b.wt.), was also evaluated. Stomach acidity, gastric volume, lesion counts, glutathione (GSH), superoxide dismutase (SOD), malondialdehyde (MDA), succinate dehydrogenase (SDH), lactate dehydrogenase (LDH), acid phosphatase (AP), interlukin-10 (IL-10) and prostaglandin E2 (PGE2) were estimated. Stomach histopathological features were monitored.Results: Nine polymethoxy flavonoids were identified from the extract. Treatment with C. sinensis peels extract recorded amelioration in all parameters.Conclusion: Citrus sinensis petroleum ether peels extract had protective and curative effects against gastric ulcer. Therefore, the extract recorded anti-secretory, anti-ulcerative, anti-inflammatory, and antioxidant effects. Its healing action exceeded its protective role due to its richness in polymethoxylated flavonoids.
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Affiliation(s)
- Asmaa Aboul Naser
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Giza, Egypt
| | - Eman Younis
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Giza, Egypt
| | - Amal El-Feky
- Department of Pharmacognosy, National Research Centre, Dokki, Giza, Egypt
| | - Marwa Elbatanony
- Department of Pharmacognosy, National Research Centre, Dokki, Giza, Egypt
| | - Manal Hamed
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Giza, Egypt
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11
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Eraslan E, Tanyeli A, Güler MC, Kurt N, Yetim Z. Agomelatine prevents indomethacin-induced gastric ulcer in rats. Pharmacol Rep 2020; 72:984-991. [PMID: 32048252 DOI: 10.1007/s43440-019-00049-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 10/26/2019] [Accepted: 12/11/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Gastric ulcer is a very common gastrointestinal disease that may be dangerous and even may lead to death. The current study was conducted to detect the prophylactic effects of agomelatine on indomethacin-induced gastric ulcer. METHODS In this study, a total of 5 groups were created as the sham, ulcer, omeprazole, agomelatine 1 mg/kg and agomelatine 5 mg/kg groups. The effects of agomelatine on indomethacin-induced gastric injury were investigated. Total antioxidant and oxidant levels; the oxidant parameters like oxidative stress index and the inflammation markers such as tumor necrosis factor-α, interleukin-1β, interleukin-6 and interleukin-10 levels in stomach tissue were determined by ELISA. In addition, the gastric mucosal injury occurred in stomach wall was examined with histopathological methods. RESULTS While the levels of the inflammatory markers, total oxidant status and oxidative stress index increased at an obvious level especially in the indomethacin group, the total antioxidant status levels decreased. It was observed that these parameters were improved at a significant level in agomelatine 1 mg/kg and agomelatine 5 mg/kg groups when compared to ulcer group; and the results were similar to omeprazole group. It was also observed that our histopathological findings were consistent with all our other results. CONCLUSIONS The results of this study showed that agomelatine usage in indomethacin-induced gastric ulcer model provides beneficial results.
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Affiliation(s)
- Ersen Eraslan
- Department of Physiology, Faculty of Medicine, Yozgat Bozok University, Yozgat, 66200, Turkey.
| | - Ayhan Tanyeli
- Department of Physiology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
| | - Mustafa Can Güler
- Department of Physiology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
| | - Nezahat Kurt
- Department of Biochemistry, Faculty of Medicine, Atatürk University, Erzurum, Turkey
| | - Zeliha Yetim
- Department of Histology and Embryology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
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Aziz RS, Siddiqua A, Shahzad M, Shabbir A, Naseem N. Oxyresveratrol ameliorates ethanol-induced gastric ulcer via downregulation of IL-6, TNF-α, NF-ĸB, and COX-2 levels, and upregulation of TFF-2 levels. Biomed Pharmacother 2018; 110:554-560. [PMID: 30530291 DOI: 10.1016/j.biopha.2018.12.002] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/27/2018] [Accepted: 12/02/2018] [Indexed: 12/17/2022] Open
Abstract
Oxyresveratrol, an active ingredient of Artocarpus lakoocha, is known to possess anti-inflammatory and immunomodulatory properties. Current study investigates the immunomodulatory effect of oxyresveratrol in mouse model of ethanol-induced ulcer. Anti-ulcer effect was determined using histopathological evaluation (H&E staining) and different tests like, gastric ulcer scoring, ulcer index, total acid secretion, and gastric pH. The mRNA expression levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), nuclear factor-kappaB (NF-ĸB), cyclooxygenase-1 (COX-1), cyclooxygenase-2 (COX-2) and trefoil factor 2 (TFF-2) were evaluated using reverse transcription polymerase chain reaction (RT-PCR). The data showed marked percentage inhibition of erosion, hemorrhage, fibrinoid necrosis, inflammatory infiltrate, and ulcer in low (30 mg/kg b.w.) and high dose (50 mg/kg b.w.) groups of oxyresveratrol. Treatment with oxyresveratrol inhibited ulcer score and ulcer index as compared with disease control group. Oxyresveratrol significantly increased gastric pH (P < 0.001) and attenuated total acid (P < 0.001) secretion. RT-PCR analysis showed significant suppression in the mRNA expression levels of IL-6 (P < 0.001), TNF-α (P < 0.01), NF-ĸB (P < 0.001), and COX-2 (P < 0.05) in oxyresveratrol treated groups, while COX-1 expression levels were found unaltered. Treatment with oxyresveratrol significantly elevated (P < 0.01) the expression levels of cytoprotective TFF-2 levels. Similar Immunomodulatory and anti-ulcer effects were found with ranitidine treatment, which was used as a reference drug. In conclusion, oxyresveratrol possess significant anti-ulcer property which might be attributed to attenuated expression levels of IL-6, TNF-α, NF-ĸB, and COX-2 and elevated expression levels of TFF-2.
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Affiliation(s)
- Rao Salman Aziz
- Department of Pharmacology, University of Health Sciences, Lahore, Pakistan
| | - Arfah Siddiqua
- Pharmacology section, Faculty of Pharmacy, The University of Lahore, Lahore, Pakistan
| | - Muhammad Shahzad
- Department of Pharmacology, University of Health Sciences, Lahore, Pakistan.
| | - Arham Shabbir
- Department of Pharmacy, The University of Lahore-Gujrat campus, Gujrat, Pakistan.
| | - Nadia Naseem
- Department of Morbid Anatomy & Histopathology, University of Health Sciences, Lahore, Pakistan
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Chae HS, You BH, Song J, Ko HW, Choi YH, Chin YW. Mangosteen Extract Prevents Dextran Sulfate Sodium-Induced Colitis in Mice by Suppressing NF-κB Activation and Inflammation. J Med Food 2017; 20:727-733. [DOI: 10.1089/jmf.2017.3944] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Hee-Sung Chae
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang, South Korea
| | - Byoung Hoon You
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang, South Korea
| | - Jieun Song
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang, South Korea
| | - Hyuk Wan Ko
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang, South Korea
| | - Young Hee Choi
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang, South Korea
| | - Young-Won Chin
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University-Seoul, Goyang, South Korea
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Moezi L, Janahmadi Z, Amirghofran Z, Nekooeian AA, Dehpour AR. The increased gastroprotective effect of pioglitazone in cholestatic rats: role of nitric oxide and tumour necrosis factor alpha. Int J Exp Pathol 2014; 95:78-85. [PMID: 24456333 DOI: 10.1111/iep.12067] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Accepted: 11/19/2013] [Indexed: 12/13/2022] Open
Abstract
The prevalence of gastric ulcers is high in cholestatic patients, but the exact mechanism of this increased frequency remains uncertain. It has been shown that pioglitazone accelerates the healing of pre-existing gastric ulcers. The present study was designed to investigate the effect of pioglitazone, on the gastric mucosal lesions in cholestatic rats. Cholestasis was induced by surgical ligation of common bile duct and sham-operated rats served as control. Different groups of sham and cholestatic animals received solvent or pioglitazone (5, 15, 30 mg/kg) for 7 days. On the day eight rats were killed after oral ethanol administration and the area of gastric lesions was measured. The serums of rats were also collected to determine serum levels of tumour necrosis factor alpha (TNF-α), IL-1β and bilirubin. The ethanol-induced gastric mucosal damage was significantly more severe in cholestatic rats than sham-operated ones. Pretreatment with pioglitazone dose-dependently attenuated gastric lesions induced by ethanol in both sham and cholestatic rats, but this effect was more prominent in cholestatic ones. The effect of pioglitazone was associated with a significant fall in serum levels of TNF-α in cholestatic rats. L-NAME, a non-selective nitric oxide synthase (NOS) inhibitor, and decreased pioglitazone-induced gastroprotective effect in cholestatic rats, while aminoguanidine, a selective inducible NOS inhibitor, potentiated pioglitazone-induced gastroprotective effect in the cholestatic rats. Chronic treatment with pioglitazone exerts an enhanced gastroprotective effect on the stomach ulcers of cholestatic rats compared to sham rats probably due to constitutive NOS induction and/or inducible NOS inhibition and attenuating release of TNF-α.
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Affiliation(s)
- Leila Moezi
- Department of Pharmacology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran; Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Moezi L, Heidari R, Amirghofran Z, Nekooeian AA, Monabati A, Dehpour AR. Enhanced anti-ulcer effect of pioglitazone on gastric ulcers in cirrhotic rats: The role of nitric oxide and IL-1β. Pharmacol Rep 2013; 65:134-43. [DOI: 10.1016/s1734-1140(13)70971-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 10/15/2012] [Indexed: 02/09/2023]
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Cheng HC, Yang HB, Chang WL, Chen WY, Yeh YC, Sheu BS. Expressions of MMPs and TIMP-1 in gastric ulcers may differentiate H. pylori-infected from NSAID-related ulcers. ScientificWorldJournal 2012; 2012:539316. [PMID: 22645431 PMCID: PMC3353510 DOI: 10.1100/2012/539316] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Accepted: 01/03/2012] [Indexed: 01/12/2023] Open
Abstract
Background. Two major causes of gastric ulcers are Helicobacter pylori (H. pylori) infection and nonsteroidal anti-inflammatory drug (NSAID) use. Aims. This study aimed to determine if there were different expressions of matrix metalloproteinases (MMPs) and tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) between H. pylori-infected and NSAID-related ulcers. Methods. The 126 gastric ulcer patients (H. pylori infected n = 46; NSAID related n = 30; combined with two factors n = 50) provided ulcer and nonulcer tissues for assessment of MMP-3, -7, and -9 and TIMP-1 expression by immunohistochemical staining. Results. Gastric ulcer tissues had significantly higher MMP-3, -7, and -9 and TIMP-1 expressions than nonulcer tissues (P < 0.05). H. pylori-infected gastric ulcers had even higher MMP-7, MMP-9, and TIMP-1 expressions in epithelial cells than NSAID-related gastric ulcers (P < 0.05). In patients with the two combined factors, gastric ulcers expressed similar proportions of antral ulcers and MMP-7 and MMP-9 intensities to NSAID-related gastric ulcers, but lower MMP-9 and TIMP-1 than H. pylori-infected gastric ulcers (P < 0.05). Conclusions. H. pylori-infected gastric ulcers express higher MMP-7, MMP-9, and TIMP-1 than NSAID-related ulcers. In patients with the two combined factors, ulcer location and MMP-7 and MMP-9 intensities are similar to NSAID use.
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Affiliation(s)
- Hsiu-Chi Cheng
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, 138 Sheng Li Road, Tainan 70403, Taiwan
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Nutritional Composition, Antioxidant Activities, and Antiulcer Potential of Lentinus squarrosulus (Mont.) Mycelia Extract. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2011:539356. [PMID: 21423634 PMCID: PMC3057541 DOI: 10.1155/2011/539356] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Revised: 12/24/2010] [Accepted: 01/12/2011] [Indexed: 11/30/2022]
Abstract
Water extract of Lentinus squarrosulus mycelia was analysed for nutritional content, antioxidant capacity, and antiulcer ability. The extract contains high protein (57.6 g/100 g) and low total fat (0.5 g/100 g) and is rich in magnesium (0.4 g/100 g), potassium (3.8 g/100 g), vitamins B1 (1.42 mg/100 g), and B3 (194.29 mg/100 g) with total phenolic content of 39.16 mg/100 g. The cupric reducing antioxidant capacity and 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity of the extract were A450 of 0.20 ± 0.03 at 0.5 mg/ml and IC50 of 14.29 mg/ml, respectively. Oral feeding of L. squarrosulus extract (250 mg/kg) offered significant gastric mucosal protection of Sprague-Dawley rats compared to cimetidine (50 mg/kg). The ulcer healing rate of ulcerated rats after 24, 48, and 72 hours of treatment was 82%, 90%, and 100%, respectively. The IL-1β level in the serum and the NF-κB level in the tissues indicate that the healing potential was associated with attenuation of proinflammatory cytokines.
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Sintara K, Thong-Ngam D, Patumraj S, Klaikeaw N, Chatsuwan T. Curcumin suppresses gastric NF-κB activation and macromolecular leakage in Helicobacter pylori-infected rats. World J Gastroenterol 2010; 16:4039-46. [PMID: 20731017 PMCID: PMC2928457 DOI: 10.3748/wjg.v16.i32.4039] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate whether curcumin could attenuate nuclear factor (NF)-κB p65 expression and macromolecular leakage in the gastric mucosa of Helicobacter pylori (H. pylori)-infected rats.
METHODS: Twenty-five male Sprague-Dawley rats were equally divided into five groups: control rats (Control), control rats supplemented with 600 mg/kg curcumin, H. pylori-infected rats (Hp), H. pylori-infected rats supplemented with 200 mg/kg curcumin (Hp + curI), and H. pylori-infected rats supplemented with 600 mg/kg curcumin (Hp + curII). In H. pylori-infected groups, rats were inoculated with H. pylori suspension twice a day at an interval of 4 h for 3 d. Two weeks later, 200 or 600 mg/kg curcumin was given once daily to curcumin-supplemented groups for 7 d. On the day of the experiment, macromolecular leakage in gastric mucosa was examined by intravital fluorescence microscopy. The stomach tissue was removed to examine NF-κB p65 expression in gastric epithelial cells by immunohistochemistry.
RESULTS: The expression of NF-κB p65 in gastric epithelial cells and the macromolecular leakage from gastric mucosal microcirculation significantly increased in the Hp group compared with the Control group. The percentages of NF-κB p65 immunoreactive cells in Control and Hp groups were 10.72% ± 2.10% vs 16.02% ± 2.98%, P = 0.004, respectively. The percentages of macromolecular leakage in Control and Hp groups were 10.69% ± 1.43% vs 15.41% ± 2.83%, P = 0.001, respectively. Curcumin supplementation in Hp + curI and Hp + curII groups significantly decreased NF-κB p65 immunoreactive cells and macromolecular leakage compared with results in the Hp group. The percentages of NF-κB p65 immunoreactive cells in Hp + curI and Hp + curII groups were 11.79% ± 2.13% (P = 0.017) and 11.42% ± 1.68% (P = 0.010), respectively. The percentages of macromolecular leakage in Hp + curI and Hp + curII groups were 12.32% ± 2.13% (P = 0.025) and 12.14% ± 1.86% (P = 0.018), respectively.
CONCLUSION: H. pylori-induced gastric inflammation in rats is associated with increased NF-κB activation and macromolecular leakage which can be reduced by curcumin supplementation.
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O'Sullivan A, O'Malley D, Coffey J, Wang JH, Redmond H. Inhibition of nuclear factor-kappaB and p38 mitogen-activated protein kinase does not always have adverse effects on wound healing. Surg Infect (Larchmt) 2009; 11:7-11. [PMID: 19656014 DOI: 10.1089/sur.2007.060] [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: 11/12/2022] Open
Abstract
BACKGROUND Inflammatory stimuli that activate p38 mitogen-activated protein kinase (MAPK) and nuclear factor-kappaB (NF-kappaB) contribute to inflammation and fibroblast function, which are necessary components of incision and wound healing. Inhibition of these signal transduction pathways may provide novel strategies to prevent sepsis but may interfere with healing. We examined the effects of inhibiting p38 activation and NF-kappaB translation on incision healing in a dorsal slit model. METHODS Male MF-1 mice were randomized into three treatment groups: Control (0.1% dimethylsulfoxide [vehicle]); SB-202190 (2.5 mcM/kg), an inhibitor of p38 MAPK; and SN-50 (10 mcg/kg), an inhibitor of the p50 subunit of NF-kappaB. Animals first underwent a dorsal slit incision, which was closed with interrupted non-absorbable sutures. Animals were sacrificed at three or seven days, and the incision sites were excised for histologic examination (hematoxylin and eosin and Van Gieson stains) and assessment of breaking strengths by tensiometry. Blood was collected for cytokine analysis. Analysis of variance was used to interpret the data. RESULTS Neither SB202190 nor SN-50 significantly impaired incision strength at day three (control 0.84 +/- 0.2 N vs. SN-50 0.78 +/- 0.2 N and SB-202190 0.93 +/- 0.2 N) or day seven (0.73 +/- 0.2 N vs. 0.66 +/- 0.2 N and 0.66 +/- 0.2 N, respectively). Circulating concentrations of tumor necrosis factor (TNF)-alpha and interleukin (IL)-6 were low on day three with no significant differences between groups (p = 0.7 and 0.4). On day seven, there were no differences in circulating IL-6 (p = 0.08); however, the blood concentrations of TNF-alpha were significantly higher in the SB-202190-treated group (p = 0.003). Histologic analysis did not demonstrate any differences in inflammatory infiltrate or collagen deposition in the incision sites and correlated with the tensiometry findings. CONCLUSIONS Inhibition of p38 and NF-kappaB does not affect healing adversely. These results suggest that these agents do not affect the inflammation required for normal healing and could be used safely for treating inflammatory and septic conditions in clinical practice.
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Affiliation(s)
- Adrian O'Sullivan
- Department of Academic Surgery, University College Cork, Cork, Ireland.
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20
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The role of nuclear factor-kappaB in the effect of angiotensin II in the paraventricular nucleus in protecting the gastric mucosa from ischemia-reperfusion injury in rats. J Gastroenterol 2009; 43:687-98. [PMID: 18807130 DOI: 10.1007/s00535-008-2217-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2007] [Accepted: 05/12/2008] [Indexed: 02/04/2023]
Abstract
BACKGROUND The purpose of this study was to elucidate the role of nuclear factor kappaB (NF-kappaB) in the development of gastric ischemia-reperfusion (GI-R) injury and in mediating the effects of angiotensin II (Ang II) in the paraventricular nucleus (PVN) on GI-R injury. METHODS GI-R injury was induced in rats by clamping the celiac artery for 30 min and then reperfusing for 1 h. A cannula was inserted into the unilateral PVN for microinjection of Ang II. The expressions and levels of NF-kappaB (p65), IkappaB-alpha, and phosphorylated IkappaB-alpha in rat gastric mucosa were examined by Western blotting and immunohistochemistry. A laser Doppler flowmeter was used to assess gastric blood flow (GBF). Malondialdehyde (MDA) was determined using the thiobarbituric acid (TBA) method, and superoxide dismutase (SOD) activity was determined by the xanthine/xanthine oxidase method. RESULTS Microinjection of Ang II (3, 30, and 300 ng) into the PVN dose-dependently inhibited GI-R injury. The levels and expressions of NF-kappaB (p65) and phosphospecific IkappaB-alpha protein increased 1 h after GI-R and were markedly reduced by microinjection of Ang II into the PVN. In contrast, the level and expression of IkappaB-alpha protein decreased 1 h after ischemia-reperfusion and recovered to the normal level by microinjection of Ang II into the PVN. The effects of Ang II were prevented by pretreatment with the Ang II AT1 receptor antagonist losartan (5 microg) microinjected into the lateral cerebral ventricle. Inhibition of NF-kappaB activity by pyrrolidine dithiocarbamate (PDTC, 200 mg/kg) produced similar effects in rats subjected to ischemia-reperfusion with or without microinjection of Ang II into the PVN. Administration of PDTC attenuated gastric mucosal injury and suppressed the activation of NF-kappaB (p65). Ang II microinjection into the PVN increased GBF and decreased the MDA content but did not alter SOD activity in the gastric mucosa following ischemia-reperfusion. CONCLUSIONS NF-kappaB plays a role in PVN Ang II-mediated protection against GI-R injury. These central effects of Ang II are mediated by AT1 receptors.
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Chao YH, Tsuang YH, Sun JS, Chen LT, Chiang YF, Wang CC, Chen MH. Effects of shock waves on tenocyte proliferation and extracellular matrix metabolism. ULTRASOUND IN MEDICINE & BIOLOGY 2008; 34:841-852. [PMID: 18222032 DOI: 10.1016/j.ultrasmedbio.2007.11.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2007] [Revised: 10/28/2007] [Accepted: 11/02/2007] [Indexed: 05/25/2023]
Abstract
The shock wave is an effective noninvasive modality for resolving various tendon pathologies. However, scientific rationale and mechanism of shock wave therapy remains limited. This study aims to investigate the effects of shock waves and their biochemical mechanisms on tenocyte proliferation and collagen synthesis. Tenocytes harvested from Achilles tendons of Sprague-Dawley rats were used in this study. Cell viability was assayed by trypan blue exclusion methods. The colorimetric assay was determined to evaluate the mitochondria activity of the tenocytes after shock wave exposure. Synthesis of collagen, nitric oxide (NO) and transforming growth factor-beta1 (TGF-beta1) were determined and their gene expression was also studied. The results showed that there was a dose-dependent impairment of cell viability observed in 0.36 mJ/mm2 and 0.68 mJ/mm2 stimulation. In the proliferation assay, low energy level with low impulses (0.36 mJ/mm2 with 50 and 100 impulses) showed positive stimulatory effects, whereas the high energy level with high impulses (0.68 mJ/mm2 with 250 and 500 impulses) had significant inhibitory effects. At 0.36 mJ/mm2, 100 impulse shock waves treatment, up-regulation of proliferating cell nuclear antigen (PCNA) (at 6 and 24 h) and collagen type I, collagen type III and TGF-beta1 gene expression (at 24 h) were observed; these were followed by the increases in NO production (at 24 h), TGF-beta1 release (at 48 and 96 h) and collagen synthesis (at the 7th day). This study revealed that shock waves can stimulate tenocyte proliferation and collagen synthesis. The associated tenocyte proliferation is mediated by early up-regulation of PCNA and TGF-beta1 gene expression, endogenous NO release and synthesis and TGF-beta1 protein and then collagen synthesis.
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Affiliation(s)
- Yuan-Hung Chao
- Institute of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan
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Brzozowski T, Konturek PC, Pajdo R, Kwiecień SN, Konturek S, Targosz A, Burnat G, Cieszkowski J, Pawlik WW, Hahn EG. Agonist of peroxisome proliferator-activated receptor gamma (PPAR-gamma): a new compound with potent gastroprotective and ulcer healing properties. Inflammopharmacology 2006; 13:317-30. [PMID: 16259750 DOI: 10.1163/156856005774423908] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Pioglitazone, a specific ligand for peroxisome proliferator-activated receptor gamma (PPAR-gamma), was recently implicated in the control of inflammatory processes and in the modulation of the expression of various cytokines such as tumor necrosis factor alpha (TNF-alpha), but its role in the mechanism of gastric mucosal integrity has not been studied extensively. This study was designed to determine the effect of pioglitazone on gastric mucosal lesions induced in rats by topical application of 100% ethanol and by 3.5 h of water immersion and restraint stress (WRS) with or without pretreatment with indomethacin (5 mg/kg i.p.) to inhibit cyclooxygenase-1 (COX-1) and COX-2 enzyme activities and L-NNA (20 mg/kg i.p.) to suppress nitric oxide (NO)-synthase. In addition, the effect of pioglitazone on ulcer healing in rats with chronic acetic acid ulcers (ulcer area 28 mm2) was determined. Rats were killed 1 h and 3.5 h after ethanol administration or WRS exposure or at day 9 upon ulcer induction, and the number and area of gastric lesions were measured by planimetry, the gastric blood flow (GBF) was determined by H2-gas clearance technique and the mucosal PGE2 generation and gene expression and plasma concentration of TNF-alpha and IL-1beta were also evaluated. Pre-treatment with pioglitazone dose-dependently attenuated gastric lesions induced by 100% ethanol and WRS; the dose reducing these lesions by 50% (ID50) being 10 mg/kg and 7 mg/kg, respectively. The protective effect of pioglitazone was accompanied by the significant rise in the GBF, an increase in PGE2 generation and the significant fall in the plasma TNF-alpha and IL-1beta levels. Strong signals for IL-1beta- and TNF-alpha mRNA were recorded in gastric mucosa exposed to ethanol or WRS, and these effects were significantly decreased by pioglitazone. Indomethacin which suppressed PG generation by about 90%, while augmenting WRS damage, and L-NNA, that suppressed NO-synthase activity, significantly attenuated the protective and hyperaemic activity of this PPAR-gamma ligand. In the chronic study, pioglitazone significantly reduced the area of gastric ulcers on day 9 and significantly raised the GBF at the ulcer margin. The acceleration of ulcer healing by PPAR-gamma ligand was accompanied by a significant increase in the expression of PECAM-1 protein, a marker of angiogenesis. We conclude that (1) pioglitazone exerts a potent gastroprotective and hyperaemic actions on the stomach involving endogenous PG and NO and attenuation of the expression and release of proinflammatory cytokines TNF-alpha and IL-1beta, and (2) PPAR-gamma ligand accelerates ulcer healing, possibly due to the enhancement in angiogenesis at ulcer margin.
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Affiliation(s)
- Tomasz Brzozowski
- Department of Physiology, Jagiellonian University Medical College, 16 Grzegorzecka Street, 31-531 Cracow, Poland.
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Mitsuyama K, Tsuruta O, Matsui Y, Harada K, Tomiyasu N, Suzuki A, Takaki K, Masuda J, Handa K, Satoh Y, Bennett BL, Toyonaga A, Sata M. Activation of c-Jun N-terminal kinase (JNK) signalling in experimentally induced gastric lesions in rats. Clin Exp Immunol 2006; 143:24-9. [PMID: 16367930 PMCID: PMC1809559 DOI: 10.1111/j.1365-2249.2005.02959.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The c-Jun N-terminal kinase (JNK) participates in intracellular signalling cascades that mediate inflammatory responses. Therefore, the JNK signalling may be involved in gastric injury and inhibition of this pathway may form the basis of a new strategy for the treatment of gastric injury. The aim of this study was to determine whether JNK participates in the formation of gastric lesions in an experimental model. Acute gastric injury was induced in Sprague-Dawley rats by intragastric administration of 100% ethanol. The amount of phospho-JNK in the rat stomach was determined using immunohistochemistry and Western analysis. Animals received subcutaneous injections of a specific JNK inhibitor SP600125 or vehicle and the extent of mucosal damage in the stomach was determined. Western analysis revealed early phosphorylation of JNK and, to a lesser extent, p38 as well as late phosphorylation of the p42/44 extracellular signal-related kinases during the development of gastric lesions. JNK was phosphorylated in epithelial cells and in occasional mononuclear cells present at lesion sites. These cells were rarely found in samples from control specimens. Treatment with SP600125 significantly reduced the extent of gastric lesions. These findings indicate that experimental gastric injury is associated with activation of the JNK signalling pathway, and also suggest that JNK inhibitors may play a role in the treatment of gastric injury in humans.
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Affiliation(s)
- K Mitsuyama
- Second Department of Medicine, Kurume University School of Medicine, Kurume, Japan.
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Xia W, Szomor Z, Wang Y, Murrell GAC. Nitric oxide enhances collagen synthesis in cultured human tendon cells. J Orthop Res 2006; 24:159-72. [PMID: 16435353 DOI: 10.1002/jor.20060] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Collagen deposition is an important process that occurs during wound healing. We and others have shown that nitric oxide (NO) is important in tendon healing. The mechanisms whereby healing is enhanced are, however, undetermined. The aim of this study was to investigate whether NO could enhance collagen synthesis in cultured human tendon cells via exogenous NO and via an adenovirus containing the gene for inducible nitric oxide synthase (Ad-iNOS). Tendon cells from the torn edge of the tendons of patients undergoing rotator cuff repair surgery were cultured following collagenase digestion, and stimulated with exogenous NO (SNAP), transfected with Ad-iNOS, and treated with the NOS inhibitor, L-NMMA. Total protein and collagen synthesis were evaluated by (3)H-proline and collagenase sensitive (3)H-proline incorporation in human tendon cells. High doses of exogenous NO (SNAP) inhibited collagen synthesis. Lower doses enhanced total protein and collagen synthesis of the tendon cells. Ad-iNOS successfully transfected active iNOS into human tendon cells in vitro and also enhanced total protein and collagen synthesis of the tendon cells. The NOS inhibitor, L-NMMA, inhibited the effects of iNOS on the cells. Our studies show for first time that nitric oxide can enhance collagen synthesis in human tendon cells in vitro. These results may explain, in part, at least, the beneficial effects of NO donors in animal models and during the treatment of tendonopathies in human clinical trials. .
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Affiliation(s)
- Wei Xia
- Orthopaedic Research Institute, St. George Hospital Campus, University of New South Wales, Kogarah, Sydney, New South Wales 2217, Australia
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Lim Y, Levy MA, Bray TM. Dietary supplementation of N-acetylcysteine enhances early inflammatory responses during cutaneous wound healing in protein malnourished mice. J Nutr Biochem 2005; 17:328-36. [PMID: 16214328 DOI: 10.1016/j.jnutbio.2005.08.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2005] [Revised: 07/09/2005] [Accepted: 08/09/2005] [Indexed: 01/08/2023]
Abstract
Prolonged wound healing is a complication that contributes to the morbidity and mortality of protein malnutrition (PM). The molecular mechanisms that underlie impaired wound healing in PM may begin in the early inflammatory stage of the process. We hypothesized that the impaired wound healing observed in PM occurs as a consequence of excessive reactive oxygen species (ROS) production that impairs the wound healing process by depressing nuclear factor kappa B (NFkappaB) activation and the subsequent synthesis and release of proinflammatory cytokines that are critical mediators of the inflammatory response. In this study, we showed that the time to wound closure was significantly prolonged in PM mice. During the early wound healing in PM, inhibitory kappa B alpha (IkappaBalpha), interleukin-1beta (IL-1beta) and tumor necrosis factor-alpha (TNF-alpha) expression and neutrophil infiltration were significantly decreased in PM mice. The role of excess ROS in PM was demonstrated by using transgenic mice with overexpression of copper zinc superoxide dismutase and with dietary supplementation of N-acetylcysteine (NAC). Both interventions improved the extent of wound closure in PM mice. Moreover, NAC supplementation in PM mice restored the expression of IkappaBalpha, IL-1beta and TNF-alpha and infiltration of neutrophils to levels observed in control animals. These findings support the notion that wound healing defects in PM may result from dysregulation of ROS-mediated and NFkappaB-regulated signaling pathways.
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Affiliation(s)
- Yunsook Lim
- Department of Human Nutrition, The Ohio State University, Columbus, OH, USA
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Saika S, Miyamoto T, Yamanaka O, Kato T, Ohnishi Y, Flanders KC, Ikeda K, Nakajima Y, Kao WWY, Sato M, Muragaki Y, Ooshima A. Therapeutic effect of topical administration of SN50, an inhibitor of nuclear factor-kappaB, in treatment of corneal alkali burns in mice. THE AMERICAN JOURNAL OF PATHOLOGY 2005; 166:1393-403. [PMID: 15855640 PMCID: PMC1606394 DOI: 10.1016/s0002-9440(10)62357-7] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We evaluated the therapeutic efficacy of topical administration of SN50, an inhibitor of nuclear factor-kappaB, in a corneal alkali burn model in mice. An alkali burn was produced with 1 N NaOH in the cornea of C57BL/6 mice under general anesthesia. SN50 (10 microg/microl) or vehicle was topically administered daily for up to 12 days. The eyes were processed for histological or immunohistochemical examination after bromodeoxyuridine labeling or for semi-quantification of cytokine mRNA. Topical SN50 suppressed nuclear factor-kappaB activation in local cells and reduced the incidence of epithelial defects/ulceration in healing corneas. Myofibroblast generation, macrophage invasion, activity of matrix metalloproteinases, basement membrane destruction, and expression of cytokines were all decreased in treated corneas compared with controls. To elucidate the role of tumor necrosis factor (TNF)-alpha in epithelial cell proliferation, we performed organ culture of mouse eyes with TNF-alpha, SN50, or an inhibitor of c-Jun N-terminal kinase (JNK) and examined cell proliferation in healing corneal epithelium in TNF-alpha-/- mice treated with SN50. An acceleration of epithelial cell proliferation by SN50 treatment was found to depend on TNF-alpha/JNK signaling. In conclusion, topical application of SN50 is effective in treating corneal alkali burns in mice.
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Affiliation(s)
- Shizuya Saika
- Department of Ophthalmology, Wakayama Medical University, 811-1 Kimiidera, Wakayama, 641-0012, Japan.
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Akahoshi T, Tanigawa T, Sarfeh IJ, Chiou SK, Hashizume M, Maehara Y, Jones MK. Selective cyclooxygenase (COX) inhibition causes damage to portal hypertensive gastric mucosa: roles of nitric oxide and NF-kappaB. FASEB J 2005; 19:1163-5. [PMID: 15845610 DOI: 10.1096/fj.04-3325fje] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Portal hypertension (PHT) is associated with increased susceptibility of the gastric mucosa to injury by a variety of factors, including nonsteroidal anti-inflammatory drugs (NSAIDs) that nonselectively inhibit both isoforms of cyclooxygenase (COX-1 and -2). PHT gastric mucosa also has excessive nitric oxide (NO) production that contributes to the general increased susceptibility to injury. Using a rat model of PHT, we studied whether selective COX inhibition, which does not damage normal (normotensive) gastric mucosa, is sufficient to cause PHT gastric damage and, if so, whether and how excessive NO is involved. Indomethacin, a nonselective NSAID, caused 2.4-fold more gastric injury to PHT vs. normotensive sham-operated (SO) control rats. Neither NS-398 nor celecoxib, selective COX-2 inhibitors, caused gastric damage in either SO or PHT rats. SC-560, a selective COX-1 inhibitor, did not cause gastric damage in SO rats but dose-dependently caused gastric damage in PHT rats. There was a compensatory increase in COX-2 expression and activity in SC-560-treated SO rats but not SC-560-treated PHT rats. Partial inhibition of NO production restored gastric COX-2 expression and activity levels in SC-560-treated PHT rats to those of SC-560-treated SO rats, by a mechanism consistent with induction of NF-kappaB, and significantly reduced gastric damage. These studies indicate that, in contrast to normotensive gastric mucosa, inhibition of COX-1 alone is sufficient to cause PHT gastric damage as a result of excessive NO that prevents the induction of NF-kappaB and the compensatory increase in COX-2.
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Affiliation(s)
- Tomohiko Akahoshi
- Department of Medicine, Department of Veterans Affairs Medical Center, Long Beach, California, USA
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Luo JC, Shin VY, Yang YH, Wu WKK, Ye YN, So WHL, Chang FY, Cho CH. Tumor necrosis factor-alpha stimulates gastric epithelial cell proliferation. Am J Physiol Gastrointest Liver Physiol 2005; 288:G32-8. [PMID: 15256360 DOI: 10.1152/ajpgi.00093.2004] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
TNF-alpha is a cytokine produced during gastric mucosal injury. We examined whether TNF-alpha could promote mucosal repair by stimulation of epithelial cell proliferation and explored further the underlying mechanisms in a rat gastric mucosal epithelial cell line (RGM-1). TNF-alpha treatment (1-10 ng/ml) for 12 or 24 h significantly increased cell proliferation but did not induce apoptosis in RGM-1 cells. TNF-alpha treatment significantly increased cytosolic phospholipase A(2) and cyclooxygenase-2 (COX-2) protein expression and PGE(2) level but did not affect the protein levels of EGF, basic fibroblast growth factor, and COX-1 in RGM-1 cells. The mRNA of TNF receptor (TNF-R) 2 but not of TNF-R1 was also increased. Dexamethasone dose dependently inhibited the stimulatory effect of TNF-alpha on cell proliferation, which was associated with a significant decrease in cellular COX-2 expression and PGE(2) level. A selective COX-2 inhibitor 3-(3-fluorophenyl)-4-[4-(methylsulfonyl)phenyl]-5,5-dimethyl-(5)H-furan-2-one (DFU) by itself had no effect on basal cell proliferation but significantly reduced the stimulatory effect of TNF-alpha on RMG-1 cells. Combination of dexamethasone and DFU did not produce an additive effect. PGE(2) significantly reversed the depressive action of dexamethasone on cell proliferation. These results suggest that TNF-alpha plays a regulatory role in epithelial cell repair in the gastric mucosa via the TNF-alpha receptor and activation of the arachidonic acid/PG pathway.
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Affiliation(s)
- Jiing Chyuan Luo
- Division of Gastroenterology, Deprtment of Medicine, Taipei Veterans General Hospital, National Yang-Ming University, Taiwan
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Handa O, Naito Y, Takagi T, Shimozawa M, Kokura S, Yoshida N, Matsui H, Cepinskas G, Kvietys PR, Yoshikawa T. Tumor necrosis factor-alpha-induced cytokine-induced neutrophil chemoattractant-1 (CINC-1) production by rat gastric epithelial cells: role of reactive oxygen species and nuclear factor-kappaB. J Pharmacol Exp Ther 2004; 309:670-6. [PMID: 14747614 DOI: 10.1124/jpet.103.062216] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Rat cytokine-induced neutrophil chemoattractant-1 (CINC-1), a counterpart of the human growth-regulated oncogene product (GRO), has been suggested to participate in neutrophil recruitment in an experimental model of gastritis in rat. However, the mechanism(s) involved in regulation of CINC-1 production by the gastric mucosa remains unclear. The aim of this study was to investigate the mechanism(s) of CINC-1 production by rat gastric mucosa in vitro. All experiments were performed using rat normal gastric mucosal cell line (RGM-1). RGM-1s were stimulated with tumor necrosis factor (TNF)-alpha, and CINC-1 mRNA levels (reverse transcription-polymerase chain reaction) and protein secretion (enzyme-linked immunosorbent assay) were assessed. The production of reactive oxygen species (ROS) and nuclear factor (NF)-kappaB activation (translocation to the nuclei) in response to TNF-alpha stimulation was evaluated using fluorescence microscopy in the presence or absence of the inhibitors of mitochondrial electron flow and NF-kappaB activation. Stimulation of RGM-1 cells with TNF-alpha resulted in an increase in intracellular oxidative stress, NF-kappaB translocation to the nuclei, and up-regulation of CINC-1 mRNA and protein, which was prevented by interfering with mitochondria-dependent ROS production and NF-kappaB activation. Taken together, these findings indicate that CINC-1, a counterpart of the human GRO, production by rat gastric epithelial cells in response to TNF-alpha stimulation is an oxidant stress-mediated and NF-kappaB-dependent event.
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Affiliation(s)
- Osamu Handa
- Vascular Cell Biology/Inflammation Program, Lawson Health Research Institute, London, Ontario, Canada
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