ArticleJournal of microscopy and ultrastructure
Histomorphological and Immunohistochemical Study of Dacomitinib-Induced Ileal Mucositis in Rats with the Possible Protection by Baicalin.
Article in Journal of microscopy and ultrastructure. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Gastrointestinal (GIT) mucositis is a common problem associated with chemotherapy. Dacomitinib is a chemotherapeutic drug that treats nonsmall cell lung cancer. It irreversibly binds to the receptors at the ileal epithelial cells, leading to mucosal injury. Baicalin (BA) is a flavonoid with anti-inflammatory, antifibrosis, and antibarrier disruption properties. Aim: This work aimed to investigate the possible protective effects of BA on dacomitinib-induced ileal mucositis in rats by histological and immunohistochemical studies. Materials and Methods: 60 Wistar rats (8-12 weeks) were used (180-200 g) and divided into 6 groups (10 rats each). Group 1: Control; Group 2 (dacomitinib): Rats received dacomitinib 7.5 mg/kg/day orally; Group 3 (dacomitinib + carboxyl methylcellulose [CMC]): Rats received dacomitinib 7.5 mg/kg/day and 0.5% CMC orally; Group 4 (dacomitinib + BA low dose): Rats received low-dose BA 30 mg/kg/day and 7.5 mg/kg/day dacomitinib orally; Group 5 (dacomitinib + BA mid dose): Rats received mid-dose BA 60 mg/kg/day and 7.5 mg/kg/day dacomitinib orally; Group 6 (dacomitinib + BA high dose): Rats received high-dose BA 100 mg/kg/day and 7.5 mg/kg/day dacomitinib orally. Results: Dacomitinib group showed short villi, desquamated epithelium, congested blood vessels, inflammatory cellular infiltrations, dilated lacteals, and wide spaces between the crypts. There is a significant increase in collagen fibers and number of tumor necrosis factor-alpha and proliferating cell nuclear antigen-positive cells. Further, there were lost epithelial cadherin (E-cadherin) and epidermal growth factor receptor immunohistochemical reaction. The previous findings were ameliorated by BA in a dose-dependent manner. Conclusion: BA has a protective effect through its anti-inflammatory, antifibrosis, and antibarrier disruption effects. Hence, BA is considered as a promising new drug for the treatment of chemotherapy-associated GIT problems, especially dacomitinib.
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