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Liu X, Yuan Z, Luo L, Wang T, Zhao F, Zhang J, Liu D. Protective role of fruits of Rosa odorata var. gigantea against WIRS-induced gastric mucosal injury in rats by modulating pathway related to inflammation, oxidative stress and apoptosis. CHINESE HERBAL MEDICINES 2024; 16:263-273. [PMID: 38706820 PMCID: PMC11064581 DOI: 10.1016/j.chmed.2023.10.006] [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: 07/10/2023] [Revised: 08/22/2023] [Accepted: 10/15/2023] [Indexed: 05/07/2024] Open
Abstract
Objective Rosa odorata var. gigantea is a popular medicinal plant. Some studies have demonstrated that ethanolic extract of the fruits of R. odorata var. gigantea (FOE) has gastroprotective properties. The aim of this study was to investigate the gastroprotective activity of FOE on water immersion restrained stress (WIRS)-induced gastric mucosal injury in a rat model and elucidate the possible molecular mechanisms involved. Methods A rat stress ulcer model was established in this study using WIRS. After rats were treated with FOE orally for 7 d, the effect of FOE treatment was analyzed by hematoxylin and eosin (H&E) staining, and the changes of inflammatory factors, oxidative stress factors, and gastric-specific regulatory factors and pepsin in the blood and gastric tissues of rats were examined by ELISA assay. Molecular mechanism of FOE was investigated by immunohistochemical assay and Western blot. Results Compared with the WIRS group, FOE could diminish both the macroscopic and microscopic pathological morphology of gastric mucosa. FOE significantly preserved the antioxidants glutathione peroxidase (GSH-PX), superoxide dismutase (SOD) and catalase (CAT) contents; anti-inflammatory cytokines interleukin-10 (IL-10) and prostaglandin E2 (PGE2) levels as well as regulatory factors tumor necrosis factor-α (TGF-α) and somatostatin (SS) contents, while decreasing malondialdehyde (MDA), nitric oxide synthase (iNOS), tumor necrosis factor (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6), gastrin (GAS) and endothelin (ET) levels. Moreover, FOE distinctly upregulated the expression of Nrf2, HO-1, Bcl2 and proliferating cell nuclear antigen (PCNA). In addition, FOE activated the expression of p-EGFR and downregulated the expression of NF-κB, Bax, Cleaved-caspase-3, Cyto-C and Cleaved-PARP1, thus promoting gastric mucosal cell survival. Conclusion The current work demonstrated that FOE exerted a gastroprotective activity against gastric mucosal injury induced by WIRS. The underlying mechanism might be associated with the improvement of anti-inflammatory, anti-oxidation and anti-apoptosis systems.
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Affiliation(s)
- Xinnan Liu
- National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Zhen Yuan
- Tianjin Modern Innovation Chinese Medicine Technology Co., Ltd., Tianjin 300380, China
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China
| | - Lifei Luo
- Tianjin Modern Innovation Chinese Medicine Technology Co., Ltd., Tianjin 300380, China
| | - Teng Wang
- National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Modern Innovation Chinese Medicine Technology Co., Ltd., Tianjin 300380, China
| | - Feng Zhao
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, China
| | - Jingze Zhang
- National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Modern Innovation Chinese Medicine Technology Co., Ltd., Tianjin 300380, China
| | - Dailin Liu
- National Key Laboratory of Chinese Medicine Modernization, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
- Tianjin Modern Innovation Chinese Medicine Technology Co., Ltd., Tianjin 300380, China
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Peripheral administration of Neuropeptide-W protects against stress-induced gastric injury in rats. Life Sci 2022; 310:121087. [DOI: 10.1016/j.lfs.2022.121087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 11/06/2022]
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Pal G, Behl T, Behera RK, Chigurupati S, Chauhan M, Singh S, Sharma N, Aldubayan M, Felemban SG, Farasani A, Bhatia S, Bungau S. Effects of nitric oxide modulators and antioxidants on endocrine and cellular markers of acute stress in rats. Biochem Biophys Res Commun 2022; 589:234-239. [PMID: 34933198 DOI: 10.1016/j.bbrc.2021.12.035] [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] [Received: 10/12/2021] [Accepted: 12/13/2021] [Indexed: 11/02/2022]
Abstract
The effects of nitric oxide modulators (NO-modulators) and antioxidants on acute (RSx1) restraint stress induced endocrine, cellular and oxidative/nitrosative stress markers was studied in Wistar rats. The results of our study revealed that exposure to RS(x1) enhanced malondialdehyde (MDA), heat shock protein (HSP-70), corticosterone, nuclear factor kappa B (NF-κB) levels and suppressed glutathione (GSH), superoxide dismutase (SOD) and total nitrites and nitrates (NOx) levels. NO precursor and NO synthase inhibitors were found to differentially modulate stress mechanisms, by altering NF-κB, HSP-70 and corticosterone levels. l-Ascorbic acid significantly suppressed acute stress induced elevation of NF-κB and HSP-70 levels depicting protective effects, as also evidenced by reversal of elevated plasma corticosterone levels. Therefore, modulation of oxidative and nitrosative pathways, offers an approach in modulating stress induced changes associated with various disorders.
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Affiliation(s)
- Giridhari Pal
- Department of Pharmacology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
| | | | - Sridevi Chigurupati
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, Qassim University, Saudi Arabia
| | - Mihir Chauhan
- Department of Pharmacology, Vallabhbhai Patel Chest Institute, University of Delhi, Delhi, India
| | - Sukhbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Neelam Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Maha Aldubayan
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraydah, Saudi Arabia
| | - Shatha Ghazi Felemban
- Department of Medical Laboratory Science, Fakeeh College for Medical Sciences, Jeddah, Saudi Arabia
| | - Abdullah Farasani
- Biomedical Research Unit, Medical Research Center, Jazan University, Jazan, Saudi Arabia; Department of Medical Laboratory Technology, College of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Saurabh Bhatia
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa, Oman; School of Health Science, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
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Zhang Y, Wu S, Liu Y, Ma J, Li W, Xu X, Wang Y, Luo Y, Cheng K, Zhuang R. Acute Cold Water-Immersion Restraint Stress Induces Intestinal Injury and Reduces the Diversity of Gut Microbiota in Mice. Front Cell Infect Microbiol 2021; 11:706849. [PMID: 34722327 PMCID: PMC8551804 DOI: 10.3389/fcimb.2021.706849] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 09/28/2021] [Indexed: 02/04/2023] Open
Abstract
Growing evidence has demonstrated that stress triggers gastrointestinal (GI) disorders. This study aimed to investigate how the acute cold water-immersion restraint (CWIR) stress affects intestinal injury and gut microbiota (GM) distribution. Male C57BL/6 mice were used to establish a CWIR animal model. Hematoxylin–eosin and periodic acid–Schiff staining were performed to assess intestinal histopathological changes. Reverse transcription quantitative polymerase chain reaction (RT-qPCR) analysis and immunofluorescence staining were used to evaluate the expression of inflammatory cytokines and immune cell infiltration in the intestinal tissues. The gut permeability and intestinal occludin protein expression were determined through fluorescein isothiocyanate-dextran detection and western blot, respectively. GM profiles were analyzed via high-throughput sequencing of the fecal bacterial 16S rRNA genes. Results showed that CWIR induced more severe intestinal mucosal injury compared to the control, leading to a significant increase in tumor necrosis factor-α expression, but no infiltration of neutrophil and T cells. CWIR also resulted in GI disruption and increased the permeability of the intestinal mucosa. GM profiles showed that CWIR reduced GM diversity of mice compared with the control group. Specifically, aerobic and gram-negative bacteria significantly increased after CWIR, which was associated with the severity of gut injury under stress. Therefore, acute CWIR leads to severe intestinal damage with inflammation and disrupts the GM homeostasis, contributing to decreased GM diversity. Our findings provide the theoretical basis for the further treatment of intestinal disorders induced by CWIR.
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Affiliation(s)
- Yuan Zhang
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Shuwen Wu
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Yongming Liu
- Orthopedic Department of Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Jingchang Ma
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Wenpeng Li
- Orthopedic Department of Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Xuexue Xu
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Yuling Wang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Yanling Luo
- Library of Fourth Military Medical University, Xi'an, China
| | - Kun Cheng
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Ran Zhuang
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China.,Department of Immunology, Fourth Military Medical University, Xi'an, China
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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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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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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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Ohta Y, Yashiro K, Kaida S, Imai Y, Ohashi K, Kitagawa A. Water-immersion restraint stress disrupts nonenzymatic antioxidant defense systems through rapid and continuous ascorbic acid depletion in the adrenal gland of rats. Cell Biochem Funct 2012; 31:254-62. [PMID: 22987339 DOI: 10.1002/cbf.2895] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2012] [Revised: 07/23/2012] [Accepted: 08/22/2012] [Indexed: 11/11/2022]
Abstract
We examined whether water-immersion restraint stress (WIRS) disrupts nonenzymatic antioxidant defense systems through ascorbic acid depletion in the adrenal gland of rats. Rats were exposed to WIRS for 0.5, 1.5, 3 or 6 h. WIRS increased serum adrenocorticotropic hormone, corticosterone and glucose concentrations and adrenal corticosterone content at each time point. WIRS increased adrenal lipid peroxide content at 3 and 6 h, and the increase was twofold higher than the unstressed level at 6 h. WIRS decreased adrenal ascorbic acid content at each time point, and the decrease reached one-third of the unstressed level at 6 h. WIRS increased adrenal reduced glutathione content at 0.5 and 6 h but reduced that content to half of the unstressed level at 6 h. WIRS increased adrenal α-tocopherol content at 1.5 h but returned that content to the unstressed level thereafter. When rats with 6 h of WIRS was orally preadministered with l-ascorbic acid (250 mg/kg), WIRS-induced changes in adrenal lipid peroxide, ascorbic acid and reduced glutathione contents were attenuated without any change in stress response. These results indicate that WIRS disrupts nonenzymatic antioxidant defense systems through rapid and continuous ascorbic acid depletion in the adrenal gland of rats.
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Affiliation(s)
- Yoshiji Ohta
- Department of Chemistry, Fujita Health University School of Medicine, Toyoake, Japan.
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Ohta Y, Yashiro K, Ohashi K, Imai Y. Disruption of non-enzymatic antioxidant defense systems in the brain of rats with water-immersion restraint stress. J Clin Biochem Nutr 2012; 51:136-42. [PMID: 22962533 PMCID: PMC3432825 DOI: 10.3164/jcbn.11-14] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Accepted: 01/18/2012] [Indexed: 01/10/2023] Open
Abstract
We examined whether non-enzymatic antioxidant defense systems are disrupted in the brain of rats with water-immersion restraint stress. When rats were exposed to water-immersion restraint stress for 1.5, 3 or 6 h, the brain had decreased ascorbic acid and reduced glutathione contents and increased lipid peroxide and nitric oxide metabolites contents at 3 h and showed further changes in these components with a reduction of vitamin E content at 6 h. Increased serum levels of stress markers were found at 1.5, 3 or 6 h of WIRS. Oral pre-administration of L-ascorbic acid (1.5 mmol/kg) or vitamin E (0.5 mmol/kg) to rats with 6 h of water-immersion restraint stress attenuated the increases in lipid peroxide and nitric oxide metabolites contents and the decrease in vitamin E content in the brain. Pre-administered L-ascorbic acid attenuated the decreases in brain ascorbic acid and reduced glutathione contents at 6 h of water-immersion restraint stress, while pre-administered vitamin E enhanced the decreases in those contents. Pre-administered L-ascorbic acid or vitamin E did not affect the increased serum levels of stress markers in rats with 6 h of water-immersion restraint stress. These results indicate that water-immersion restraint stress causes disruption of non-enzymatic antioxidant defense systems through enhanced lipid peroxidation and nitric oxide generation in the brain of rats with water-immersion restraint stress.
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Affiliation(s)
- Yoshiji Ohta
- Department of Chemistry, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan
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Mohd Fahami NA, Ibrahim IA, Kamisah Y, Mohd Ismail N. Palm vitamin E reduces catecholamines, xanthine oxidase activity and gastric lesions in rats exposed to water-immersion restraint stress. BMC Gastroenterol 2012; 12:54. [PMID: 22639913 PMCID: PMC3426494 DOI: 10.1186/1471-230x-12-54] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Accepted: 05/28/2012] [Indexed: 12/24/2022] Open
Abstract
Background This study examined the effects of Palm vitamin E (PVE) and α-tocopherol (α-TF) supplementations on adrenalin, noradrenalin, xanthine oxidase plus dehydrogenase (XO + XD) activities and gastric lesions in rats exposed to water-immersion restraint stress (WIRS). Methods Sixty male Sprague–Dawley rats (200-250 g) were randomly divided into three equal sized groups. The control group was given a normal diet, while the treated groups received the same diet with oral supplementation of PVE or α-TF at 60 mg/kg body weight. After the treatment period of 28 days, each group was further subdivided into two groups with 10 rats without exposing them to stress and the other 10 rats were subjected to WIRS for 3.5 hours. Blood samples were taken to measure the adrenalin and noradrenalin levels. The rats were then sacrificed following which the stomach was excised and opened along the greater curvature and examined for lesions and XO + XD activities. Results The rats exposed to WIRS had lesions in their stomach mucosa. Our findings showed that dietary supplementations of PVE and α-TF were able to reduce gastric lesions significantly in comparison to the stressed control group. WIRS increased plasma adrenalin and noradrenalin significantly. PVE and α-TF treatments reduced these parameters significantly compared to the stressed control. Conclusions Supplementations with either PVE or α-TF reduce the formation of gastric lesions. Their protective effect was related to their abilities to inhibit stress induced elevation of adrenalin and noradrenalin levels as well as through reduction in xanthine oxidase and dehydrogenase activities.
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Affiliation(s)
- Nur Azlina Mohd Fahami
- Department of Pharmacology, Faculty of Medicine, UKMMC, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
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Aziz Ibrahim IA, Kamisah Y, Nafeeza MI, Nur Azlina MF. The effects of palm vitamin E on stress hormone levels and gastric lesions in stress-induced rats. Arch Med Sci 2012; 8:22-9. [PMID: 22457670 PMCID: PMC3309432 DOI: 10.5114/aoms.2012.27276] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Revised: 10/30/2010] [Accepted: 11/09/2010] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION This study examines the effects of palm vitamin E (PVE) or α-tocopherol (α-TF) supplementation on adrenocorticotropin hormone (ACTH), corticosterone and gastric lesions in rats exposed to water-immersion restraint stress (WIRS). MATERIAL AND METHODS Sixty male Sprague-Dawley rats (200-250 g) were divided into three groups. Group I: 20 rats as a control group were given a normal diet. Group II: 20 rats received oral supplementation of PVE at 60 mg/kg body weight. Group III: 20 rats received oral supplementation of α-TF at 60 mg/kg body weight. After the treatment period of 28 days, each group was further subdivided into two groups: 10 rats not exposed to stress, and the other 10 rats subjected to WIRS for 3.5 h. Blood samples were taken to measure the ACTH and corticosterone levels. The rats were then sacrificed and the stomach excised and opened along the greater curvature and examined for lesions. RESULTS Rats exposed to WIRS had lesions in their stomach mucosa. Our findings showed that dietary supplementation of PVE or α-TF was able to reduce gastric lesions significantly in comparison to the stressed controls. The WIRS increased plasma ACTH and corticosterone significantly. Palm vitamin E and α-TF treatments reduced these parameters significantly compared to the stressed controls. CONCLUSIONS Supplementation with either PVE or α-TF reduces the formation of gastric lesions, probably by inhibiting the elevation of ACTH and corticosterone levels induced by stress.
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Affiliation(s)
- Ibrahim Abdel Aziz Ibrahim
- Department of Pharmacology, Faculty of Medicine, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia
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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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Ohta Y, Imai Y, Kaida S, Kamiya Y, Kawanishi M, Hirata I. Vitamin E protects against stress-induced gastric mucosal lesions in rats more effectively than vitamin C. Biofactors 2010; 36:60-9. [PMID: 20091802 DOI: 10.1002/biof.73] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In this study, we examined the protective effects of vitamin E (VE) against gastric mucosal lesions induced by water immersion restraint stress (WIRS) in rats in comparison with that of vitamin C (VC). The gastric mucosa of rats with 6 h of WIRS showed lesions with bleeding, decrease in nonprotein SH, VC, VE, and adherent mucus concentrations and constitutive nitric oxide synthase activity, and increase in lipid peroxide and NOx (nitrite/nitrate) concentrations and myeloperoxidase, xanthine oxidase, and inducible nitric oxide synthase activities. Either VE (0.05 or 0.5 mmol/kg) or VC (0.5 or 1.5 mmol/kg) was orally administered to rats with 6 h of WIRS just before the onset of the stress. Both doses of pre-administered VE prevented gastric mucosal lesion development and attenuated all these changes in gastric mucosal components and enzymes studied, whereas only the higher dose of pre-administered VC suppressed the changes in all parameters studied. These results indicate that orally administered VE protects against WIRS-induced gastric mucosal lesions in rats more effectively than orally administered VC. These results also suggest that the administered VE protects against gastric mucosal lesions in rats with WIRS through its antioxidant and anti-inflammatory actions in the gastric mucosa in the same way as the administered VC.
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Affiliation(s)
- Yoshiji Ohta
- Department of Chemistry, Fujita Health University School of Medicine, Toyoake, Aichi 470-1192, Japan.
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Kaida S, Ohta Y, Imai Y, Kawanishi M. Protective effect of L-ascorbic acid against oxidative damage in the liver of rats with water-immersion restraint stress. Redox Rep 2010; 15:11-9. [PMID: 20196924 PMCID: PMC7067345 DOI: 10.1179/174329210x12650506622925] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
We examined whether L-ascorbic acid (AA) (or reduced ascorbic acid) protects against oxidative damage in the liver of rats subjected to water-immersion stress (WIRS). AA (100, 250 or 500 mg/kg) was orally administered at 0.5 h before the onset of WIRS. Rats with 6 h of WIRS had increased serum corticosterone, glucose, total ascorbic acid (T-AA), AA, lipid peroxide (LPO), and NOx concentrations and alanine aminotransferase and aspartate aminotrasferase activities. The stressed rats had increased hepatic LPO, NOx, and dehydroascorbic acid concentrations and myeloperoxidase activity, decreased hepatic T-AA, AA, reduced glutathione concentrations and superoxide dismutase activity, and unchanged hepatic vitamin E concentration. Pre-administered AA attenuated the stress-induced changes in serum LPO and NOx concentrations and alanine aminotransferase and aspartate aminotrasferase activities and hepatic LPO, NOx, and T-AA, AA, dehydroascorbic acid, and reduced glutathione concentrations and myeloperoxidase and superoxide dismutase activities dose-dependently. Pre-administered AA did not affect the stress-induced changes in serum corticosterone and glucose concentrations. These results indicate that pre-administered AA protects against oxidative damage in the liver of rats with WIRS possibly by attenuating disruption of the antioxidant defense system and increases in NO generation and neutrophil infiltration in the tissue.
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Affiliation(s)
- Shingo Kaida
- Department of Anesthesiology, 2nd Teaching Hospital, School of Medicine, Fujita Health University, Nagoya, Aichi 470-1192, Japan
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