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Is dextran sulfate sodium a good inducer of acute experimental enteritis?
International Journal of Immunopathology and Pharmacology ( IF 3.0 ) Pub Date : 2019-04-11 , DOI: 10.1177/2058738419843367
Wei Chen 1 , Jing Zhang 1 , Chen Li 2 , Quan Pan 3 , Jingtong Wu 4 , Lina Fan 5 , Chunyan Chen 6 , Xiaoqing Huang 7 , Fei Teng 8 , Jinshui Zhu 1
Affiliation  

Animal models play critical roles in exploring the pathogenesis of human diseases and designing novel therapeutic schemes. Acute experimental colitis (AEC) models have been reported to be established in mice principally by oral administration of dextran sulfate sodium (DSS). However, little knowledge is known about whether DSS can be used to induce the acute experimental enteritis (AEE). In this study, different concentrations of DSS (0%, 2%, 3%, and 5%) were used to induce AEC and AEE models in two cohorts. After the establishment of these two models, the symptoms of the mice induced by DSS were noted, the length and average weight of each colon and small intestine were measured, and hematoxylin and eosin (HE) staining was conducted for assessing the inflammatory infiltration in these models. Generally, the comparison of the inflammatory scoring between AEC and AEE models was analyzed. As a consequence, we found that, the mice with 2%-5% DSS administration in a week could develop into AEC models in two cohorts and AEE models in one cohort, followed by the signs of diarrhea, gross rectal bleeding, weight loss of the body, and shortened colon and intestine length, as compared with the control group. HE staining showed that the inflammatory scoring was dramatically increased by 3%-5% DSS in AEC models in two cohorts but slightly elevated in AEE models in one cohort. Meanwhile, as compared with the severe AEC models, the extent of inflammatory infiltration induced by 3%-5% DSS in AEE models was much milder. In conclusion, oral administration of 3%-5% DSS is a good inducer of AEC models, but not AEE models.

中文翻译:

硫酸葡聚糖钠是急性实验性肠炎的良好诱导剂吗?

动物模型在探索人类疾病的发病机制和设计新颖的治疗方案中起着至关重要的作用。据报道,主要是通过口服右旋糖酐硫酸钠(DSS)在小鼠中建立了急性实验性结肠炎(AEC)模型。但是,关于DSS是否可用于诱发急性实验性肠炎(AEE)的知识很少。在这项研究中,在两个队列中使用不同浓度的DSS(0%,2%,3%和5%)诱导AEC和AEE模型。建立这两种模型后,记录由DSS诱导的小鼠的症状,测量每个结肠和小肠的长度和平均重量,并进行苏木精和曙红(HE)染色以评估其中的炎症浸润楷模。通常,比较了AEC和AEE模型的炎症评分。结果,我们发现,每周服用2%-5%DSS的小鼠可能在两个队列中发展为AEC模型,在一个队列中发展为AEE模型,随后出现腹泻,直肠大出血,体重减轻的迹象。与对照组相比,身体和结肠和肠长度缩短。HE染色显示,在两个队列的AEC模型中,炎症评分显着增加了3%-5%DSS,而在一个队列的AEE模型中,炎症评分略有升高。同时,与严重的AEC模型相比,AEE模型中3%-5%DSS引起的炎症浸润程度要轻得多。总之,口服3%-5%DSS可以很好地诱发AEC模型,而不是AEE模型。结果,我们发现,每周服用2%-5%DSS的小鼠可能在两个队列中发展为AEC模型,在一个队列中发展为AEE模型,随后出现腹泻,直肠大出血,体重减轻的迹象。与对照组相比,身体和结肠和肠长度缩短。HE染色显示,在两个队列的AEC模型中,炎症评分显着增加了3%-5%DSS,而在一个队列的AEE模型中,炎症评分略有升高。同时,与严重的AEC模型相比,AEE模型中3%-5%DSS引起的炎症浸润程度要轻得多。总之,口服3%-5%DSS可以很好地诱发AEC模型,而不是AEE模型。结果,我们发现,每周服用2%-5%DSS的小鼠可能在两个队列中发展为AEC模型,在一个队列中发展为AEE模型,随后出现腹泻,直肠大出血,体重减轻的迹象。与对照组相比,身体和结肠和肠长度缩短。HE染色显示,在两个队列的AEC模型中,炎症评分显着增加了3%-5%DSS,而在一个队列的AEE模型中,炎症评分略有升高。同时,与严重的AEC模型相比,AEE模型中3%-5%DSS引起的炎症浸润程度要轻得多。总之,口服3%-5%DSS可以很好地诱发AEC模型,而不是AEE模型。一周内注射2%-5%DSS的小鼠可能在两个队列中发展为AEC模型,在一个队列中发展为AEE模型,随后出现腹泻,直肠大出血,体重减轻以及结肠和肠道缩短的体征长度,与对照组相比。HE染色显示,在两个队列的AEC模型中,炎症评分显着增加了3%-5%DSS,而在一个队列的AEE模型中,炎症评分略有升高。同时,与严重的AEC模型相比,AEE模型中3%-5%DSS引起的炎症浸润程度要轻得多。总之,口服3%-5%DSS可以很好地诱发AEC模型,而不是AEE模型。一周内注射2%-5%DSS的小鼠可能在两个队列中发展为AEC模型,在一个队列中发展为AEE模型,随后出现腹泻,直肠大出血,体重减轻以及结肠和肠道缩短的体征长度,与对照组相比。HE染色显示,在两个队列的AEC模型中,炎症评分显着增加了3%-5%DSS,而在一个队列的AEE模型中,炎症评分略有升高。同时,与严重的AEC模型相比,AEE模型中3%-5%DSS引起的炎症浸润程度要轻得多。总之,口服3%-5%DSS可以很好地诱发AEC模型,而不是AEE模型。与对照组相比。HE染色显示,在两个队列的AEC模型中,炎症评分显着增加了3%-5%DSS,而在一个队列的AEE模型中,炎症评分略有升高。同时,与严重的AEC模型相比,AEE模型中3%-5%DSS引起的炎症浸润程度要轻得多。总之,口服3%-5%DSS可以很好地诱发AEC模型,而不是AEE模型。与对照组相比。HE染色显示,在两个队列的AEC模型中,炎症评分显着增加了3%-5%DSS,而在一个队列的AEE模型中,炎症评分略有升高。同时,与严重的AEC模型相比,AEE模型中3%-5%DSS引起的炎症浸润程度要轻得多。总之,口服3%-5%DSS可以很好地诱发AEC模型,而不是AEE模型。
更新日期:2019-11-01
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