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Condition: Ulcerative Colitis

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Total 40 results found since Jan 2013.

Vitamin D3 alleviates inflammation in ulcerative colitis by activating the VDR-NLRP6 signaling pathway
In this study, we carried out histological and physiological analyses in UC patients and UC mice. RNA sequencing (RNA-seq), assays for transposase-accessible chromatin with high-throughput sequencing (ATAC-seq), chromatin immunoprecipitation (ChIP) assays and protein and mRNA expression were performed to analyze and identify the potential molecular mechanism in UC mice and lipopolysaccharide (LPS)-induced mouse intestinal epithelial cells (MIECs). Moreover, we established nucleotide-binding oligomerization domain (NOD)-like receptor protein nlrp6-/- mice and siRNA-NLRP6 MIECs to further characterize the role of NLRP6 in an...
Source: Frontiers in Immunology - February 8, 2023 Category: Allergy & Immunology Source Type: research

Photoaffinity labelling-based chemoproteomic strategy identifies PEBP1 as the target of ethyl gallate against macrophage activation
Chem Commun (Camb). 2023 Jan 4. doi: 10.1039/d2cc05440j. Online ahead of print.ABSTRACTUlcerative colitis (UC) is an inflammatory disease of the colon with an unmet need for therapeutic targets. Ethyl gallate (EG) is a natural small molecule for UC treatment, but its cellular target is unknown. By labelling EG with a diazirine photocrosslinker and a click chemistry handle, we identified phosphatidyl-ethanolamine binding protein1 (PEBP1) as a direct cellular target of EG by forming hydrogen bonds with Asp70 and Tyr120. In particular, hydrogen/deuterium exchange mass spectrometry indicated that EG induced the sequence (resid...
Source: Chemical Communications - January 4, 2023 Category: Chemistry Authors: Wei Yu Min Liao Yang Chen Rui Xue Xiao-Meng Shi Dan Liu Fang-Fang Zhuo Hui Tang Zhi-Yuan Lu Peng-Fei Tu Bo Han Xin Jia Ke-Wu Zeng Source Type: research

BMSCs improve TNBS-induced colitis in rats by inducing Treg differentiation by expressing PD-L1
CONCLUSIONS: We found that BMSCs can induce Treg differentiation by inhibiting the Akt/mTOR pathway via PD-L1; this significantly improved symptoms and pathology in our ulcerative colitis rat models.PMID:36261682 | DOI:10.1007/s10529-022-03307-1
Source: Biotechnology Letters - October 19, 2022 Category: Biotechnology Authors: Fei Gao Dandan Cui Dongmei Zuo Zhexing Shou Jia Yang Ting Yu Yujin Liu Si Chu Feng Zhu Chunzhu Wei Source Type: research

CYP24A1 Involvement in Inflammatory Factor Regulation Occurs via the Wnt Signaling Pathway
ConclusionTaken together, this study suggests that inflammatory factors may increase CYP24A1 expressionvia NF- κB pathway activation, which in turn stimulates Wnt signaling.
Source: Journal of Huazhong University of Science and Technology -- Medical Sciences -- - October 17, 2022 Category: Research Source Type: research

siRNA-based nanotherapeutics as emerging modalities for immune-mediated diseases: A preliminary review
This study will pave the way for new avenues of research into the diagnosis and treatment of IMDs.PMID:35830711 | DOI:10.1002/cbin.11841
Source: Cell Biology International - July 13, 2022 Category: Cytology Authors: Saman Sargazi Rabia Arshad Reza Ghamari Abbas Rahdar Ali Bakhshi Sonia Fathi Karkan Narges Ajalli Muhammad Bilal Ana M D íez-Pascual Source Type: research

Systemic delivery of siRNA to the colon using peptide modified PEG-PCL polymer micelles for the treatment of ulcerative colitis
In this study, we investigated the effects of siRNA delivered using MPEG-PCL-CH2R4H2C nanomicelles through intravenous administration to the inflammation site of dextran sulfate sodium-induced colitis mice. The MPEG-PCL-CH2R4H2C micelles had optimum physical properties and high siRNA compaction ability. Moreover, model-siRNA delivered through MPEG-PCL-CH2R4H2C showed higher accumulation in the inflammatory site than that of the naked siRNA. Furthermore, intravenous administration of MPEG-PCL-CH2R4H2C/siRelA micelles, targeting siRelA, a subunit of NF-κB, significantly decreased the shortening of large intestine, clinical ...
Source: European Journal of Pharmaceutics and Biopharmaceutics - December 29, 2021 Category: Drugs & Pharmacology Authors: Hisako Ibaraki Naruhiro Hatakeyama Naoki Arima Akihiro Takeda Yasuo Seta Takanori Kanazawa Source Type: research

Apprehending Ulcerative Colitis Management With Springing Up Therapeutic Approaches: Can Nanotechnology Play a Nascent Role?
AbstractPurpose of ReviewUlcerative colitis (UC) is a chronic inflammatory bowel disorder that causes inflammation in the colon and rectum and can be lethal to the patients. The dysbiotic intestinal microbiome is considered a major factor of UC, yet it needs more evidences. As there is no cure for UC, anti-inflammatory drugs, potent steroids, immunomodulatory drugs, or even surgery is used to manage the disease. The purpose of this review is to focus on the underlying factors involved in the disease pathogenicity, including host gut microbiome and novel therapies for treatment of UC.Recent FindingsDue to disruption of inte...
Source: Current Pathobiology Reports - January 6, 2021 Category: Laboratory Medicine Source Type: research

Autotaxin stimulates LPA2 receptor in macrophages and exacerbates dextran sulfate sodium-induced acute colitis
AbstractAutotaxin (ATX) is a secreted enzyme that hydrolyzes lysophosphatidylcholine (LPC) to lysophosphatidic acid (LPA) and choline. ATX has been implicated in multiple chronic inflammatory diseases, but little is known about its role in the development of inflammatory bowel disease (IBD). Here, we investigated how ATX contributed to intestinal inflammation during colitis. We found that ATX expression levels were upregulated in the intestines of ulcerative colitis (UC) patients in acute state as well as in the intestines of dextran sulfate sodium (DSS)-induced colitis mice, which is likely due to increased infiltration o...
Source: Journal of Molecular Medicine - October 31, 2020 Category: Molecular Biology Source Type: research

Vitamin D regulates claudin-2 and claudin-4 expression in active ulcerative colitis by p-Stat-6 and Smad-7 signaling
ConclusionsOur results indicate that the effects of vitamin D on Cl-2 and Cl-4 are mediated by p-Stat-6 and Smad-7 signal, respectively. The study suggests that vitamin D administration to UC patients could be a useful therapeutic intervention, given that vitamin D deficiency is found in these patients.
Source: International Journal of Colorectal Disease - June 26, 2020 Category: Gastroenterology Source Type: research

Heat shock transcription factor 2 predicts mucosal healing and promotes mucosal repair of ulcerative colitis.
Conclusions: HSF2 may be a predictor of MH in UC patients. HSF2 inhibited inflammation and promoted mucosal repair. PMID: 32538201 [PubMed - as supplied by publisher]
Source: Scandinavian Journal of Gastroenterology - June 18, 2020 Category: Gastroenterology Tags: Scand J Gastroenterol Source Type: research