Background: M10 is a derivative of Myricetin by adding a hydrophilic glycosylation group. Our previous study revealed that M10 by oral administration prevented colitis-associated colonic cancer (CAC) through attenuating endoplasmic reticulum stress in mice. In current study, we evaluated the inhibitory effects of M10 on ulcerative colitis in mice model, the mechanism of M10 in preventing colitis was further investigated.
Methods: Mice model of ulcerative colitis was induced by continuous oral dextran sodium sulfate (DSS). M10 was given gavage once a day for 12 consecutive weeks. Disease activity index (DAI) was recorded by analyzing the symptoms of colitis. Intestinal barrier was analyzed by the Immunofluorescence staining assay. The structure of microvilli of intestinal epithelial cells was analyzed under Transmission electron microscopy (TEM). TEM assay was also performed to determine the formation of necroptosis in the colonic epithelium with ulcerative colitis. We performed Western blotting assay to analyze the IL-6 and NF-κB pathways, as well as the cytokine cascades related to TNF-α signaling pathway during necroptosis.
Results: M10 by oral administration demonstrated a prevention of ulcerative colitis, showing a significant decrease of DAI as compared to the model mice. Pathological analysis indicated that M10 attenuated the degree of colonic inflammation in colonic tissues. M10 restored the structures of intestinal barrier damaged by DSS. M10 prevented the activation of the IL-6 and NF-κB signaling pathways in the inflamed colonic epithelium. Further, M10 prevented necroptosis in the inflamed colonic mucosal cells through down-regulating the TNF-α pathway. Importantly, M10 demonstrated higher activities in preventing ulcerative colitis than Myricetin and control drug Mesalazine.
Conclusions: Myricetin derivative M10 prevents chronic ulcerative colitis through inhibiting necroptosis. M10 could be developed as a promising drug for the treatment of chronic ulcerative colitis.
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http://dx.doi.org/10.3389/fphar.2020.557312 | DOI Listing |
BMC Gastroenterol
January 2025
Department of Gastroenterology, Pomeranian Medical University in Szczecin, Unii Lubelskiej 1, Szczecin, 71-254, Poland.
Background: Functional gastrointestinal disorders (FGIDs), now known as disorders of gut-brain interaction (DGBIs), such as Irritable Bowel Syndrome (IBS) and Functional Dyspepsia (FD), significantly impact global health, reducing quality of life and burdening healthcare systems. This study addresses the epidemiological gap in Poland, focusing on the West Pomeranian Voivodeship.
Methods: We conducted a cross-sectional study of 2070 Caucasian patients (58.
BMC Infect Dis
January 2025
Center of Infectious Disease, West China Hospital, Sichuan University, Chengdu, China.
Background: Chronic active Epstein-Barr virus (CAEBV) colitis is a rare disease with clinical and endoscopic manifestations very similar to those of inflammatory bowel disease (IBD). In clinical practice, it is easy to be misdiagnosed and mistreated, leading to poor clinical outcomes.
Case Presentation: We report a case of a 56-year-old Chinese woman who presented with 6 years of intermittent severe diarrhea, fever, and abdominal pain.
Dig Liver Dis
January 2025
Takeda, Brussels, Belgium.
Background: Fatigue is common among patients with inflammatory bowel diseases (IBDs) and is associated with decreased quality of life (QoL).
Aims: Describe fatigue evolution and identify factors associated with fatigue outcomes in patients with ulcerative colitis (UC) or Crohn's disease (CD) initiating biologic treatment.
Methods: Data from adult Belgian patients with UC or CD enrolled in a prospective real-world study were utilized.
J Ethnopharmacol
January 2025
School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China. Electronic address:
Ethnopharmacological Relevance: Huanglian Ganjiang decoction (HGD), which is composed of Chinese medicines with cold, warm, and astringent properties, has demonstrated significant therapeutic efficacy in ulcerative colitis (UC). However, the underlying mechanisms remain unclear, highlighting the need for a multi-faceted investigation. Disassembling prescriptions is a crucial approach for investigating compatibility mechanisms.
View Article and Find Full Text PDFLancet Gastroenterol Hepatol
January 2025
Division of Pediatric Gastroenterology and Nutrition, Mount Sinai, Icahn School of Medicine, New York, NY 10029, USA. Electronic address:
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