Local association of Trypanosoma cruzi chronic infection foci and enteric neuropathic lesions at the tissue micro-domain scale

Local association of Trypanosoma cruzi chronic infection foci and enteric neuropathic lesions at the tissue micro-domain scale
复制标题

组织微域尺度上克氏锥虫慢性感染病灶与肠神经病变的局部关联

DOI:
10.1101/2021.03.09.434577
复制
发表时间:
2021
期刊:
--
影响因子:
--
通讯作者:
Khan A
Khan A
中科院分区:
--
文献类型:
--
作者:
Khan A

文献摘要

参考文献

被引文献

相似文献

消化性恰加斯病(Digestive Chagas disease,DCD)是由克氏锥虫(Trypanosoma cruzi)感染引起的肠道神经病。发病机制知之甚少,缺乏一个强大的,预测性的动物模型阻碍了研究。我们使用胃肠道示踪剂测定和体内感染成像系统筛选了一系列小鼠模型,以发现一个亚组在饱腹和禁食条件下均表现出慢性消化道转运功能障碍和显著的粪便滞留。结肠是一个特定的网站,这两个组织寄生虫的持久性,延迟运输和肌间神经元的戏剧性损失所揭示的整装免疫荧光分析。因此,DCD小鼠重现了人类疾病的关键临床表现。我们还利用双报告基因转基因寄生虫通过活体生物发光成像来定位结肠中罕见慢性感染病灶的位置,然后在组织微区中使用荧光成像来揭示感染和肠神经系统病变的共定位。这表明结肠中的长期克氏锥虫-宿主相互作用驱动DCD发病机制,表明抗寄生虫化疗对慢性疾病进展的疗效需要进一步的临床前研究。
Digestive Chagas disease (DCD) is an enteric neuropathy caused byTrypanosoma cruziinfection. The mechanism of pathogenesis is poorly understood and the lack of a robust, predictive animal model has held back research. We screened a series of mouse models using gastrointestinal tracer assays andin vivoinfection imaging systems to discover a subset exhibiting chronic digestive transit dysfunction and significant retention of faeces in both sated and fasted conditions. The colon was a specific site of both tissue parasite persistence, delayed transit and dramatic loss of myenteric neurons as revealed by whole-mount immunofluorescence analysis. DCD mice therefore recapitulated key clinical manifestations of human disease. We also exploited dual reporter transgenic parasites to home in on locations of rare chronic infection foci in the colon byex vivobioluminescence imaging and then used fluorescence imaging in tissue microdomains to reveal co-localisation of infection and enteric nervous system lesions. This indicates that long-termT.cruzi-host interactions in the colon drive DCD pathogenesis, suggesting that the efficacy of anti-parasitic chemotherapy against chronic disease progression warrants further pre-clinical investigation.
DOI: 10.1172/jci58200
发表时间: 2011-09-01
影响因子: 15.9
作者:
Laranjeira, Catia;Sandgren, Katarina;Pachnis, Vassilis
通讯作者: Pachnis, Vassilis
DOI: 10.1007/s00018-017-2693-8
发表时间: 2018-01
期刊: Cellular and molecular life sciences : CMLS
影响因子: --
作者:
Hugenholtz F;de Vos WM
通讯作者: de Vos WM
DOI: 10.1016/j.immuni.2017.05.011
发表时间: 2017-06-20
期刊: Immunity
影响因子: 32.4
作者:
Yoo BB;Mazmanian SK
通讯作者: Mazmanian SK
DOI: 10.4269/ajtmh.2001.65.435
发表时间: 2001-11-01
影响因子: 3.3
作者:
Lages-Silva, E;Crema, E;Chiari, E
通讯作者: Chiari, E
DOI: 10.1590/s0074-02762006000700005
发表时间: 2006-11-01
期刊: Memórias do Instituto Oswaldo Cruz
影响因子: --
作者:
Sánchez-Guillén, María del Carmen;López-Colombo, Aurelio;Pérez-Fuentes, Ricardo
通讯作者: Pérez-Fuentes, Ricardo