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Evaluation of the Local and Peripheral Immune Responses in Patients with Cystic Echinococcosis. | LitMetric

AI Article Synopsis

Article Abstract

Background: Cystic echinococcosis (CE) cysts may persist for decades because of immune modulation mechanisms. Here, we characterize the cysts and the blood immune responses in patients with CE.

Methods: We enrolled 61 patients with CE and 19 control subjects. We received tissue samples from seven patients with CE and a control subject requiring liver cystectomy. The immunohistochemistry evaluation of the immune cell subtypes and cytokines in the pericysts and surrounding liver and the antigen B (AgB)-specific response analysis of whole blood were performed.

Results: In CE, the pericyst and the surrounding liver parenchyma showed aggregates of CD3 T lymphocytes, mainly CD4. B lymphocyte aggregates were present in the liver tissue. Monocytes/granulocytes were rarely observed. Th2 cytokine expression was scarce, whereas IFN-γ expression was present in the CE tissues. The control subject did not show an inflammatory infiltrate. The IL-4-specific response to AgB was increased in the patients with CE compared to the control, and this result was confirmed in a larger cohort ( = 0.003), whereas the IFN-γ-response was similar between the two groups ( = 0.5570).

Conclusion: In patients with CE, CD4 lymphocytes infiltrate the pericyst and the surrounding liver tissue with a low IL-4/IL-13 expression level and a moderate IFN-γ expression level; moreover, an IL-4 parasite-specific response is detected in the periphery. These results support adventitia involvement in CE immunopathogenesis.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11206897PMC
http://dx.doi.org/10.3390/pathogens13060477DOI Listing

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