Inverse correlation of soluble programmed cell death-1 ligand-1 (sPD-L1) with eosinophil count and clinical severity in allergic rhinitis patients

Inverse correlation of soluble programmed cell death-1 ligand-1 (sPD-L1) with eosinophil count and clinical severity in allergic rhinitis patients

[ABSTRACT] [Background] : T-cell response outcome is determined by co-stimulatory / inhibitory signals. Programmed cell death-1 ligand-1 (PD-L1) is a member of these co-signaling molecules with known soluble form in human serum. Soluble PD-L1(sPD-L1) is also recognized in patients with some types of...

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Bibliographic Details
Published in:Allergology International Vol. 66; no. 2; pp. 326 - 331
Main Authors: Rasoul Nasiri Kalmarzia, b, Nima Fattahic, Zeinab Kavianid, Pedram Ataeee, Majid Mansourib, Ghobad Moradif, Alireza Yousefzadeg, Javid Morad Abbassih
Format: Journal Article
Language:Japanese
Published: JAPANESE SOCIETY OF ALLERGOLOGY 01-04-2017
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Summary:[ABSTRACT] [Background] : T-cell response outcome is determined by co-stimulatory / inhibitory signals. Programmed cell death-1 ligand-1 (PD-L1) is a member of these co-signaling molecules with known soluble form in human serum. Soluble PD-L1(sPD-L1) is also recognized in patients with some types of malignancy or autoimmune disorders, though there are few studies on sPD-L1 roles in allergic diseases. The purpose of this survey was to evaluate the association between sPD-L1 levels with eosinophil count as well as disease severity in allergic rhinitis (AR) patients. [Methods] : 90 patients with AR were selected. Disease severity was determined by a modified Allergic Rhinitis and its Impact on Asthma (ARIA) classification as mild, moderate and severe. Whole blood samples were collected. Then eosinophil count and serum sPD-L1 were detected by a hematologic analyzer and a commercial ELISA kit. [Results] : 13 (14.44%), 31 (34.44%), and 46 (51.12%) of patients had mild, moderate and severe disease, respectively. The mean levels of sPD-L1 and eosinophil count were ascertained 18.38 +- 14.42 ng/ml and 422.43 +- 262.26 cell/μl. A significant inverse correlation was determined between sPD-L1 levels and eosinophil count (r = -0.364, P < 0.001). Moreover, we detected a significant negative association between sPD-L1 levels and disease severity (r = -0.384, P < 0.001). [Conclusions] : It is deduced that sPD-L1 can be used as a helpful marker to determine the severity of AR. Furthermore, this study indicated that sPD-L1 may have an inhibitory role in AR development, and its modulation may be considered as a useful accessory therapeutic approach for reduction of AR progression.
ISSN:1323-8930