Abstract:
:The programmed death-1 (PD-1)/PD-ligand 1 (PD-L1) signaling pathway is a negative regulatory mechanism that inhibits T cell proliferation and cytokine production. Soluble PD-1 (sPD-1) and soluble PD-L1 (sPD-L1), are also involved in regulation of the PD-1/PD-L1 signaling pathway. In the present study, the expression levels of sPD-1 and sPD-L1, as well as those of T helper (Th)1 [including interleukin (IL)-2 and interferon gamma], Th2 (including IL-4, IL-6 and IL-10) and Th17 (including interleukin 17) cell cytokines, were measured in the sera of patients with cystic echinococcosis (CE). Measurements were performed prior to and following after surgery and treatment with cyclic albendazole to investigate the effects of sPD-1 and sPD-L1 in patients with CE. Cytokine expression levels were measured using cytokine bead array and the expression levels of sPD-1 and sPD-L1 were measured using ELISA. In addition, in vitro stimulation was used to detect whether sPD-L1 has a negative regulatory effect on cytokine secretion or homeostasis. The present study observed significantly higher levels of sPD-L1 in patients with CE compared with healthy controls. Significantly elevated levels of Th2 cytokines in the sera of patients with CE were also observed. The results also suggest that there is an imbalanced expression of Th1 and Th2 cells during CE. In addition, it was demonstrated that sPD-1 and sPD-L1 are regulatory factors to the PD-1/PD-L1 signaling pathway, each having opposite effect, suggesting that they regulate the immune response to CE infection by creating a dynamic balance. In conclusion, sPD-L1 may play an important role in maintaining homeostasis in hosts with CE.
journal_name
Exp Ther Medjournal_title
Experimental and therapeutic medicineauthors
Li Y,Xiao Y,Su M,Zhang R,Ding J,Hao X,Ma Ydoi
10.3892/etm.2015.2876subject
Has Abstractpub_date
2016-01-01 00:00:00pages
251-256issue
1eissn
1792-0981issn
1792-1015pii
ETM-0-0-2876journal_volume
11pub_type
杂志文章abstract::The present retrospective study aimed to investigate the prognostic factors for critically ill patients with an Acinetobacter baumannii (A. baumannii) infection. A total of 37 patients from the intensive care unit (ICU) were enrolled in the study. Data was collected from patients, including age, gender, ethnicity, A. ...
journal_title:Experimental and therapeutic medicine
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journal_title:Experimental and therapeutic medicine
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journal_title:Experimental and therapeutic medicine
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journal_title:Experimental and therapeutic medicine
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journal_title:Experimental and therapeutic medicine
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journal_title:Experimental and therapeutic medicine
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abstract::The role of apolipoprotein E (Apo E) gene polymorphisms in the etiology of recurrent pregnancy loss (RPL) is not clearly understood. We evaluated this polymorphism in unexplained pregnancy losses in a group of Turkish women. In our prospective case-control study, 45 well-characterized RPL cases were examined for their...
journal_title:Experimental and therapeutic medicine
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journal_title:Experimental and therapeutic medicine
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