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Fan X, Yin J, Yin J, Weng X, Ding R. Comparison of the anti-inflammatory effects of vitamin E and vitamin D on a rat model of dextran sulfate sodium-induced ulcerative colitis. Exp Ther Med 2023; 25:98. [PMID: 36761001 PMCID: PMC9893224 DOI: 10.3892/etm.2023.11797] [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: 08/03/2022] [Accepted: 11/09/2022] [Indexed: 01/15/2023] Open
Abstract
The present study aimed to compare the clinical effects of vitamin E and vitamin D on a rat model of dextran sulfate sodium (DSS)-induced ulcerative colitis (UC), and to elucidate the underlying mechanisms associated with changes in the levels of cytokines. After successful establishment of the rat model of DSS-induced UC, prednisolone (1 mg/kg), vitamin D (50 ng) and vitamin E (6, 30 and 150 IU/kg) were orally administered for 1 week. The pharmacodynamics were evaluated by a daily combination of clinical observation (CO) scores, histopathological evaluations and assessment of molecular markers of inflammation. Administration of vitamin D, vitamin E (30 and 150 IU/kg), prednisolone, and the combination of vitamin D and vitamin E resulted in a decrease in CO scores. The severity of inflammation of the colon was markedly alleviated in the treatment groups compared with that in the untreated DSS group according to the results of histopathological examination; however, they showed different inhibitory effects on the levels of some cytokines. In conclusion, the present results indicated that oral administration of vitamin E could promote recovery of DSS-induced UC by the inhibition of proinflammatory cytokines, and that its underlying mechanism may differ from that of vitamin D and glucocorticoid drugs.
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Affiliation(s)
- Xing Fan
- National Beijing Center for Drug Safety Evaluation and Research, State Key Laboratory for Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P.R. China,Office of Laboratory Management, Beijing Technology and Business University, Beijing 100048, P.R. China
| | - Jie Yin
- Department of Neuroscience, Beijing Institute of Basic Medical Sciences, Beijing 100850, P.R. China
| | - Jiye Yin
- National Beijing Center for Drug Safety Evaluation and Research, State Key Laboratory for Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P.R. China
| | - Xiechuan Weng
- Department of Neuroscience, Beijing Institute of Basic Medical Sciences, Beijing 100850, P.R. China,Correspondence to: Dr Xiechuan Weng, Department of Neuroscience, Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P.R. China NULL
| | - Rigao Ding
- National Beijing Center for Drug Safety Evaluation and Research, State Key Laboratory for Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, P.R. China,Correspondence to: Dr Xiechuan Weng, Department of Neuroscience, Beijing Institute of Basic Medical Sciences, 27 Taiping Road, Beijing 100850, P.R. China NULL
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Li JY, Guo YC, Zhou HF, Yue TT, Wang FX, Sun F, Wang WZ. Arginine metabolism regulates the pathogenesis of inflammatory bowel disease. Nutr Rev 2022; 81:578-586. [PMID: 36040377 PMCID: PMC10086623 DOI: 10.1093/nutrit/nuac070] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
The pathogenesis of inflammatory bowel disease (IBD) is related to genetic susceptibility, enteric dysbiosis, and uncontrolled, chronic inflammatory responses that lead to colonic tissue damage and impaired intestinal absorption. As a consequence, patients with IBD are prone to nutrition deficits after each episode of disease resurgence. Nutritional supplementation, especially for protein components, is often implemented during the remission phase of IBD. Notably, ingested nutrients could affect the progression of IBD and the prognostic outcome of patients; therefore, they should be cautiously evaluated prior to being used for IBD intervention. Arginine (Arg) is a semi-essential amino acid required for protein synthesis and intimately associated with gut pathophysiology. To help optimize arginine-based nutritional intervention strategies, the present work summarizes that during the process of IBD, patients manifest colonic Arg deficiency and the turbulence of Arg metabolic pathways. The roles of Arg–nitric oxide (catalyzed by inducible nitric oxide synthase) and Arg–urea (catalyzed by arginases) pathways in IBD are debatable; the Arg–polyamine and Arg–creatine pathways are mainly protective. Overall, supplementation with Arg is a promising therapeutic strategy for IBD; however, the dosage of Arg may need to be carefully tailored for different individuals at different disease stages. Additionally, the combination of Arg supplementation with inhibitors of Arg metabolic pathways as well as other treatment options is worthy of further exploration.
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Affiliation(s)
- Jun-Yi Li
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital , Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yan-Chao Guo
- Huazhong University of Science and Technology Department of Clinical Nutrition, Tongji Medical College, , Wuhan, China
| | - Hai-Feng Zhou
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital , Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tian-Tian Yue
- Huazhong University of Science and Technology Department of Clinical Nutrition, Tongji Medical College, , Wuhan, China
| | - Fa-Xi Wang
- Center for Biomedical Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology , Wuhan, China
| | - Fei Sun
- Center for Biomedical Research, Tongji Hospital, Tongji Medical College, Huazhong University of Science & Technology , Wuhan, China
| | - Wen-Zhu Wang
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital , Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Ghia JE, Crenner F, Rohr S, Meyer C, Metz-Boutigue MH, Aunis D, Angel F. A role for chromogranin A (4–16), a vasostatin-derived peptide, on human colonic motility. An in vitro study. ACTA ACUST UNITED AC 2004; 121:31-9. [PMID: 15256271 DOI: 10.1016/j.regpep.2004.04.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2003] [Revised: 04/02/2004] [Accepted: 04/08/2004] [Indexed: 11/26/2022]
Abstract
The hypothesis that CgA-derived peptides may be involved in mechanisms modulating motility was tested. Human colonic smooth muscles were studied using an organ bath technique. Acetic acid (AA) effects were characterized on spontaneous mechanical activities (SMA) and on responses to transmural nerve stimulation (NS). AA induced a significant decrease in tone and abolished SMA; this effect was insensitive to either TTX or L-NAME/apamin. The AA-induced inhibitory effects were significantly reduced in the presence of CgA4-16. This effect was insensitive to TTX or L-NAME/apamin. Furthermore, AA-induced effects were blocked in the presence of BAYK8644 and CgA4-16 together. The inhibitory effect of nifedipine was delayed in the presence of CgA4-16. NS induced a triphasic response. Only the excitatory components were reduced in the presence of AA. This effect was dose-related and remained unchanged in the presence of CgA4-16 alone, but was blocked in the presence of simultaneous administration of CgA4-16 and L-NAME/apamin. AA application induced inhibition of human colon motility in vitro. This effect may be mediated through an action on L-type calcium channels. CgA4-16 may display a protective role, which prevents the inhibition of motility due to AA to occur, by acting on both smooth muscle and afferent terminals.
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MESH Headings
- 3-Pyridinecarboxylic acid, 1,4-dihydro-2,6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, Methyl ester/pharmacology
- Acetic Acid/pharmacology
- Apamin/pharmacology
- Calcium Channel Agonists/pharmacology
- Calcium Channel Blockers/pharmacology
- Chromatography, High Pressure Liquid
- Chromogranin A
- Chromogranins/chemical synthesis
- Chromogranins/pharmacology
- Colon, Sigmoid/cytology
- Colon, Sigmoid/drug effects
- Colon, Sigmoid/innervation
- Electric Stimulation
- Gastrointestinal Motility/drug effects
- Humans
- Muscle, Smooth/cytology
- Muscle, Smooth/drug effects
- Muscle, Smooth/innervation
- NG-Nitroarginine Methyl Ester/pharmacology
- Nifedipine/pharmacology
- Organ Culture Techniques
- Peptide Fragments/chemical synthesis
- Peptide Fragments/pharmacology
- Tetrodotoxin/pharmacology
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Affiliation(s)
- Jean-Eric Ghia
- INSERM Unit 575 Pavillon Poincaré 1 place de l'Hôpital Civil 67091 Strasbourg, France
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Abstract
Nitric oxide (NO) is a pleiotropic free radical messenger molecule. There is a large body of evidence that the inducible form of the NO synthase enzyme (iNOS) that is responsible for high-output production of NO from l-arginine is up-regulated in various forms of mucosal inflammation. Consistent with this, multiple detection strategies have demonstrated that iNOS expression, enzymatic activity, and NO production are increased in human inflammatory bowel disease tissues. There is also evidence that the level of iNOS-derived NO correlates well with disease activity in ulcerative colitis, while for Crohn's disease, the results are more variable. A substantial number of animal studies have assessed the role of inducible NO production. While the majority of studies have shown improvement in experimental inflammatory bowel disease with iNOS inhibition, there are also a significant number of reports of exacerbation of disease with inhibitors. Similarly, studies using iNOS-deficient mice in colitis models have shown improvement, worsening, or no effect on disease. The authors suggest that additional studies to assess the role of the competing biochemical pathway, namely the conversion of l-arginine to polyamines via the actions of arginase and ornithine decarboxylase, may provide important new insights into understanding the regulation of mucosal inflammation and inflammatory bowel disease.
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Affiliation(s)
- Raymond K Cross
- Department of Medicine, Division of Gastroenterology, University of Maryland School of Medicine, Baltimore 21201, USA
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Skrzydlewska E, Stankiewicz A, Sulkowska M, Sulkowski S, Kasacka I. Antioxidant status and lipid peroxidation in colorectal cancer. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2001; 64:213-222. [PMID: 11594700 DOI: 10.1080/15287390152543690] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Colon carcinogenesis is a multistep process where oxygen radicals were found to enhance carcinogenesis at all stages: initiation, promotion, and progression. Since insufficient capacity of protective antioxidant system can result in cancer, the aim of this study was to examine the activity of antioxidant enzymes (superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase) and the levels of reduced glutathione, vitamin C, and vitamin E. The lipid peroxidation products were also determined by measuring malondialdehyde and 4-hydroxynonenal levels in colorectal cancer tissue collected from 55 patients. In these cases the activity of superoxide dismutase, glutathione peroxidase, and glutathione reductase was significantly increased while the activity of catalase was significantly decreased in cancer tissue. However, the level of nonenzymatic antioxidant parameters (glutathione, vitamin C, and vitamin E) was significantly decreased in cancer tissue. Further lipid peroxidation was enhanced during cancer development, manifested by a significant increase in malondialdehyde and 4-hydroxynonenal levels. The obtained results indicate significant changes in antioxidant capacity of colorectal cancer tissues, which lead to enhanced action of oxygen radicals, resulting in lipid peroxidation.
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Affiliation(s)
- E Skrzydlewska
- Department of Analytical Chemistry, Medical Academy of Białystok, Poland.
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