Publication:
Histological and immunohistochemical effects of L-arginine and silymarin on TNBS-induced inflammatory bowel disease in rats

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Al-Drees-31-1259-1270-2016.pdf(15.64 MB)
Date
2016
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Authors
Al-Drees, Abdul Majeed ; Khalil, Mahmoud Salah
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Publisher
Universidad de Murcia. Departamento de Biología Celular e Histología
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DOI
DOI: 10.14670/HH-11-757
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info:eu-repo/semantics/article
Description
Abstract
Inflammatory bowel disease (IBD) is a chronic disease that affects quality of life. Various mediators are involved in IBD pathogenesis including inducible nitric oxide synthase (iNOS), nuclear factor kappa B (NF-κB), cytochrome c, heat shock protein 70 (HSP70) and tumor necrosis factor (TNF)-α. L-Arginine (L-Arg) can be depleted in IBD, and silymarin inhibits neutrophil infiltration, NF-κB, and TNF-α, which have crucial roles in inducing IBD. This study aimed to investigate whether silymarin and L-Arg supplementation decreases IBD progression in trinitrobenzinesulfonic acid (TNBS)-induced colitis. Fifty adult male albino rats were randomized into five groups (10 animals per group): Group I rats orally received 10 mg silymarin/100 g body weight once daily; Group II rats orally received 2 mg L-Arg/100 g body weight once daily; Group III rats rectally received 0.85 mL TNBS in 50% ethanol to induce colitis; Group IV rats were treated similar to group III and, on recovery from anesthesia, received silymarin as described for group I; and Group V rats were treated similar to group III and, on recovery from anesthesia, received L-Arg as described for group II. On day 7, the rats were anesthetized, and blood samples were collected to determine the serum concentrations of TNF-α. Laparotomy and total colectomy were performed for macroscopic, histological, and immunohistochemical investigations. The results showed that silymarin and L-Arg macroscopically and microscopically ameliorated TNBS-induced colitis; significantly decreased the serum levels of TNFα; inhibited the colonic expression of iNOS, NF-κB, and cytochrome c; and increased expression of HSP70. Our results suggest that these complementary medicines could be used to supplement current treatments for IBD.
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Inflammatory bowel disease , TNBS , Histology , Immunohistochemistry , L-Arginine , Silymarin
Citation
Histology and Histopathology, Vol.31, nº11, (2016)
URI
http://hdl.handle.net/10201/114104
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Histology and histopathology Vol.31,nº 11 (2016)
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