Chronic Toxoplasma gondii infection enhances susceptibility to colitis
| العنوان: | Chronic Toxoplasma gondii infection enhances susceptibility to colitis |
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| المؤلفون: | Yong Fu, Luisa Cervantes-Barragan, Qiuling Wang, Iti Saraav, Marco Colonna, L. David Sibley, Matthias Mack, Philipp Olias, Yi Wang, Leran Wang, Thaddeus S. Stappenbeck, Megan T. Baldridge |
| المصدر: | Proceedings of the National Academy of Sciences. 118 |
| بيانات النشر: | Proceedings of the National Academy of Sciences, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Multidisciplinary, biology, business.industry, Monocyte, Toxoplasma gondii, Inflammation, biology.organism_classification, medicine.disease, Nitric oxide, Chronic infection, chemistry.chemical_compound, medicine.anatomical_structure, chemistry, Immunology, medicine, Colitis, medicine.symptom, business, Wound healing, Dysbiosis |
| الوصف: | Oral infection with Toxoplasma gondii results in dysbiosis and enteritis, both of which revert to normal during chronic infection. However, whether infection leaves a lasting impact on mucosal responses remains uncertain. Here we examined the effect of the chemical irritant dextran sodium sulfate (DSS) on intestinal damage and wound healing in chronically infected mice. Our findings indicate that prior infection with T. gondii exacerbates damage to the colon caused by DSS and impairs wound healing by suppressing stem cell regeneration of the epithelium. Enhanced tissue damage was attributable to inflammatory monocytes that emerge preactivated from bone marrow, migrate to the intestine, and release inflammatory mediators, including nitric oxide. Tissue damage was reversed by neutralization of inflammatory monocytes or nitric oxide, revealing a causal mechanism for tissue damage. Our findings suggest that chronic infection with T. gondii enhances monocyte activation to increase inflammation associated with a secondary environmental insult. |
| تدمد: | 1091-6490 0027-8424 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::7a26210b1588dc77da2d1cb0a8f78da4Test https://doi.org/10.1073/pnas.2106730118Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi...........7a26210b1588dc77da2d1cb0a8f78da4 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10916490 00278424 |
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