Clinical Pharmacology Department, Faculty of Medicine, Port Said University, Port Said, Egypt.
Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Suez Canal University, Ismailia, Egypt; Center of Excellence in Molecular and Cellular Medicine (CEMCM), Faculty of Medicine, Suez Canal University, Ismailia 41522, Egypt.
Biomed Pharmacother. 2023 Sep;165:115005. doi: 10.1016/j.biopha.2023.115005. Epub 2023 Jun 14.
Ulcerative colitis (UC), a chronic autoimmune disease of the gut with a relapsing and remitting nature, considers a major health-care problem. DSS is a well-studied pharmacologically-induced model for UC. Toll-Like Receptor 4 (TLR4) and its close association with p-38-Mitogen-Activated Protein Kinase (p-38 MAPK) and nuclear factor kappa B (NF-κB) has important regulatory roles in inflammation and developing UC. Probiotics are gaining popularity for their potential in UC therapy. The immunomodulatory and anti-inflammatory role of azithromycin in UC remains a knowledge need. In the present rats-established UC, the therapeutic roles of oral probiotics (60 billion probiotic bacteria per kg per day) and azithromycin (40 mg per kg per day) regimens were evaluated by measuring changes in disease activity index, macroscopic damage index, oxidative stress markers, TLR4, p-38 MAPK, NF-κB signaling pathway in addition to their molecular downstream; tumor necrosis factor alpha (TNFα), interleukin (IL)1β, IL6, IL10 and inducible nitric oxide synthase (iNOS). After individual and combination therapy with probiotics and azithromycin regimens, the histological architecture of the UC improved with restoration of intestinal tissue normal architecture. These findings were consistent with the histopathological score of colon tissues. Each separate regimen lowered the remarkable TLR4, p-38 MAPK, iNOS, NF-κB as well as TNFα, IL1β, IL6 and MDA expressions and elevated the low IL10, glutathione and superoxide dismutase expressions in UC tissues. The combination regimen possesses the most synergistic beneficial effects in UC that, following thorough research, should be incorporated into the therapeutic approach in UC to boost the patients' quality of life.
溃疡性结肠炎(UC)是一种慢性的肠道自身免疫性疾病,具有反复发作和缓解的特点,是一个主要的医疗保健问题。葡聚糖硫酸钠(DSS)是一种研究得很好的、用于诱导 UC 的药理学模型。Toll 样受体 4(TLR4)及其与 p-38-丝裂原活化蛋白激酶(p-38 MAPK)和核因子 kappa B(NF-κB)的密切关联,在炎症和 UC 的发展中具有重要的调节作用。益生菌因其在 UC 治疗中的潜力而受到关注。阿奇霉素在 UC 中的免疫调节和抗炎作用仍然是一个知识需求。在本研究中,通过测量疾病活动指数、宏观损伤指数、氧化应激标志物、TLR4、p-38 MAPK、NF-κB 信号通路以及它们的下游分子肿瘤坏死因子-α(TNFα)、白细胞介素(IL)1β、IL6、IL10 和诱导型一氧化氮合酶(iNOS)的变化,评估了口服益生菌(每天每公斤 600 亿个益生菌)和阿奇霉素(每天每公斤 40 毫克)方案对大鼠溃疡性结肠炎的治疗作用。在单独和联合使用益生菌和阿奇霉素方案后,UC 的组织学结构得到改善,肠道组织的正常结构得到恢复。这些发现与结肠组织的组织病理学评分一致。每种单独的方案均降低了 UC 组织中 TLR4、p-38 MAPK、iNOS、NF-κB 以及 TNFα、IL1β、IL6 和 MDA 的表达,并升高了 IL10、谷胱甘肽和超氧化物歧化酶的表达。联合方案在 UC 中具有最协同的有益作用,经过深入研究,应该将其纳入 UC 的治疗方法中,以提高患者的生活质量。
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