较小的氧气纳米泡比较大的氧气纳米泡更有效地抑制结肠炎和结肠癌的产生
Gendensuren Dorjkhorloo1, Haruka Okami2, Nobutoshi Mutsuki3
1Department of General Surgical Science, Graduate School of Medicine, Gunma University, 3-39-22 Showamachi, Maebashi 371-8510, Japan.
International journal of molecular sciences
|February 27, 2026
概括
小氧纳米泡 (NBO2) 水有效防止大肠炎和大肠直肠癌在小鼠. 这项研究强调,较小的纳米泡尺寸对于通过减轻瘤缺氧来减少炎症和瘤发展至关重要.
科学领域:
- 生物医学工程 生物医学工程
- 癌症研究 癌症研究
- 胃肠病学 胃肠病学
背景情况:
- 氧纳米气泡 (NBO2) 水显示了固体癌症的治疗潜力.
- 对于NBO2大小在与炎症相关的结直肠癌发生中的作用尚不清楚.
研究的目的:
- 调查小NBO2水是否对结肠炎和结肠直肠癌发生有更强的预防作用.
- 确定纳米泡大小在体内炎症相关结直肠癌发生的意义.
主要方法:
- 使用阿佐西甲/德克斯特兰硫酸盐诱导的大肠炎相关癌症的小鼠模型.
- 用小或大尺寸的NBO2.2进行饮用水的管理.
- 使用原子力显微镜证实了粒子大小差异,并通过免疫组织化学分析了他的病理学和分子标记物.
主要成果:
- 小的NBO2水显著降低了疾病活动,结肠炎得分,结肠缩短,炎性巨细胞密度和瘤数量.
- 小NBO2水降低了Ki-67阳性瘤细胞,并降低了瘤细胞和瘤中的缺氧诱导因子-1α表达.
- 没有观察到对体重,饮水/食物摄入量或脏体重的显著影响.
结论:
- 纳米尺寸的氧气泡显示出对与炎症相关的结直肠癌发生的预防作用.
- 纳米泡的粒子大小是影响生物结果的关键因素.
- 小量的NBO2水可以通过减少瘤微环境缺氧来缓解结肠炎和瘤进展.
更多相关视频
相关概念视频
Cancer Therapies
10.3K
Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
10.3K
Factors Affecting Dissolution: Particle Size and Effective Surface Area
1.8K
Dissolution kinetics, an essential aspect of oral drug delivery, is significantly influenced by the drug's particle size. According to the Noyes-Whitney dissolution model, the dissolution rate correlates directly with the drug's surface area. The larger the surface area, the higher the drug's solubility in water, leading to a faster drug dissolution rate. Reducing particle size increases the effective surface area, enhancing the dissolution process. Micronization and nanosizing are...
1.8K
Drugs for Treatment of Ulcerative Colitis in IBD
577
Ulcerative colitis is a chronic inflammatory condition primarily affecting the colon and rectum. The primary drugs used in the treatment of ulcerative colitis are aminosalicylates. They exhibit anti-inflammatory and immunosuppressive properties. They modulate inflammatory mediators and inhibit the activity of nuclear factor κB (NF-κB). Aminosalicylates also reduce inflammation by inhibiting prostaglandin and leukotriene production and decreasing neutrophil chemotaxis and superoxide...
577


