Crocetin reduces TNBS-induced experimental colitis in mice by downregulation of NFkB
<b>Background/Aim:</b> Ulcerative colitis (UC) is characterized by oxidative and nitrosative stress, leukocyte infiltration and upregulation of proinflammatory cytokines. In this study, we aim to investigate the effects of crocetin and its protective mechanism on 2,4,6- trinitrobenzene...
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2009-01-01
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| Series: | The Saudi Journal of Gastroenterology |
| Subjects: | |
| Online Access: | http://www.saudijgastro.com/article.asp?issn=1319-3767;year=2009;volume=15;issue=3;spage=181;epage=187;aulast=Kazi |
| _version_ | 1798043810688663552 |
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| author | Kazi Hamid Qian Zhiyu |
| author_facet | Kazi Hamid Qian Zhiyu |
| author_sort | Kazi Hamid |
| collection | DOAJ |
| description | <b>Background/Aim:</b> Ulcerative colitis (UC) is characterized by oxidative and nitrosative stress, leukocyte infiltration and upregulation of proinflammatory cytokines. In this study, we aim to investigate the effects of crocetin and its protective mechanism on 2,4,6- trinitrobenzene sulfonic acid (TNBS)-induced colitis in mice model. <b> Materials and Methods:</b> Intestinal lesions (judged by macroscopic and histological score) were associated with neutrophil infiltration (measured as increase in myeloperoxidase (MPO) activity in the mucosa), and high levels of malondialdehyde MDA (an indicator of lipid peroxidation). <b> Results:</b> Dose-response studies revealed that treatment of mice with crocetin (50 mg/kg/day) i.g. for 8 days) significantly ameliorated diarrhea and the disruption of colonic architecture. Higher and lower doses (100 and 25 mg/kg/day) did not exhibit comparable effects. In crocetin-treated mice, a significant reduction was noted in the degree of both neutrophil infiltration (measured as decrease in myeloperoxidase activity) and lipid peroxidation (measured as decrease in malondialdehyde activity) in the inflamed colon. Crocetin also reduced the levels of nitric oxide (NO) associated with the favorable expression of TH1 and TH2 cytokines and inducible NO synthase along with the down regulation of nuclear factor-kB (NFkB). <b> Conclusion:</b> These findings suggest that crocetin exerts beneficial effects in experimental colitis, and therefore we propose that this carotenoid may have therapeutic implications for human UC and can be administered along with the conventional therapy of UC |
| first_indexed | 2024-04-11T22:54:12Z |
| format | Article |
| id | doaj.art-2a5f70cb0b3b440c96c4d9ecb5770f0b |
| institution | Directory Open Access Journal |
| issn | 1319-3767 1998-4049 |
| language | English |
| last_indexed | 2024-04-11T22:54:12Z |
| publishDate | 2009-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | The Saudi Journal of Gastroenterology |
| spelling | doaj.art-2a5f70cb0b3b440c96c4d9ecb5770f0b2022-12-22T03:58:29ZengWolters Kluwer Medknow PublicationsThe Saudi Journal of Gastroenterology1319-37671998-40492009-01-01153181187Crocetin reduces TNBS-induced experimental colitis in mice by downregulation of NFkBKazi HamidQian Zhiyu<b>Background/Aim:</b> Ulcerative colitis (UC) is characterized by oxidative and nitrosative stress, leukocyte infiltration and upregulation of proinflammatory cytokines. In this study, we aim to investigate the effects of crocetin and its protective mechanism on 2,4,6- trinitrobenzene sulfonic acid (TNBS)-induced colitis in mice model. <b> Materials and Methods:</b> Intestinal lesions (judged by macroscopic and histological score) were associated with neutrophil infiltration (measured as increase in myeloperoxidase (MPO) activity in the mucosa), and high levels of malondialdehyde MDA (an indicator of lipid peroxidation). <b> Results:</b> Dose-response studies revealed that treatment of mice with crocetin (50 mg/kg/day) i.g. for 8 days) significantly ameliorated diarrhea and the disruption of colonic architecture. Higher and lower doses (100 and 25 mg/kg/day) did not exhibit comparable effects. In crocetin-treated mice, a significant reduction was noted in the degree of both neutrophil infiltration (measured as decrease in myeloperoxidase activity) and lipid peroxidation (measured as decrease in malondialdehyde activity) in the inflamed colon. Crocetin also reduced the levels of nitric oxide (NO) associated with the favorable expression of TH1 and TH2 cytokines and inducible NO synthase along with the down regulation of nuclear factor-kB (NFkB). <b> Conclusion:</b> These findings suggest that crocetin exerts beneficial effects in experimental colitis, and therefore we propose that this carotenoid may have therapeutic implications for human UC and can be administered along with the conventional therapy of UChttp://www.saudijgastro.com/article.asp?issn=1319-3767;year=2009;volume=15;issue=3;spage=181;epage=187;aulast=KaziColitiscrocetincytokinesinflammatory bowel diseaseNFkBnitric oxide |
| spellingShingle | Kazi Hamid Qian Zhiyu Crocetin reduces TNBS-induced experimental colitis in mice by downregulation of NFkB The Saudi Journal of Gastroenterology Colitis crocetin cytokines inflammatory bowel disease NFkB nitric oxide |
| title | Crocetin reduces TNBS-induced experimental colitis in mice by downregulation of NFkB |
| title_full | Crocetin reduces TNBS-induced experimental colitis in mice by downregulation of NFkB |
| title_fullStr | Crocetin reduces TNBS-induced experimental colitis in mice by downregulation of NFkB |
| title_full_unstemmed | Crocetin reduces TNBS-induced experimental colitis in mice by downregulation of NFkB |
| title_short | Crocetin reduces TNBS-induced experimental colitis in mice by downregulation of NFkB |
| title_sort | crocetin reduces tnbs induced experimental colitis in mice by downregulation of nfkb |
| topic | Colitis crocetin cytokines inflammatory bowel disease NFkB nitric oxide |
| url | http://www.saudijgastro.com/article.asp?issn=1319-3767;year=2009;volume=15;issue=3;spage=181;epage=187;aulast=Kazi |
| work_keys_str_mv | AT kazihamid crocetinreducestnbsinducedexperimentalcolitisinmicebydownregulationofnfkb AT qianzhiyu crocetinreducestnbsinducedexperimentalcolitisinmicebydownregulationofnfkb |