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Role of IL-6/IL-10 ratio in the diagnosis and in the assessment of the severity of obsessive-compulsive disorder

  • Marwa M. Esawy
  • Marwa A. Shabana
  • Eman F. Ali
Original Article

Abstract

Obsessive-compulsive disorder (OCD) has a genetic and environmental pathogenesis. The immunologic changes in OCD have been proven in many studies, but those tackling cytokine in OCD are still limited. The present study aims to evaluate the diagnostic performance of IL-6, IL-10, and the IL-6/IL-10 ratio in the OCD patient group, and to show their correlation with the clinical parameters of OCD. Eighty subjects (60 OCD patients and 20 matched controls) were participating in this study. The enzyme-linked immunosorbent assay was run to quantify the IL-6 and IL-10. Serum IL-6 exhibited a higher result in OCD patients than controls (p = 0.002) but serum IL-10 levels had no significant difference (p > 0.05). IL-6/IL-10 ratio showed significantly higher values in OCD patients than controls (p < 0.0001). Serum IL-6 and IL-6/IL-10 ratio were negatively correlated with age of onset but were directly correlated with disease duration and disease severity. IL-6/IL-10 ratio showed 86.7% sensitivity and 90% specificity in OCD diagnosis. An immune activation is implicated in the OCD pathogenesis. This was confirmed by the high serum levels of IL-6 in OCD patients. IL-6/IL-10 ratio showed a considerable sensitivity and specificity in the OCD diagnosis. IL-6 and IL-6/IL-10 ratio are correlated positively with the OCD intensity.

Keywords

Cytokine Interleukin-6, interleukin-10 OCD 

Abbreviations

AUC

Area under the curve

CSF

Cerebrospinal fluid

ELISA

Enzyme-linked immunosorbent assay

IL

Interleukin

NPV

Negative predictive value

OCD

Obsessive-compulsive disorder

PPV

Positive predictive value

ROC

Receiver operating characteristic

Y-BOCS

Yale Brown Obsessive-Compulsive Scale

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in the study involving human participants were in accordance with the ethical standards of the Ethical Committee of the Faculty of Human Medicine, Zagazig University.

Informed consent

All study subjects were requested to participate, and they gave written informed consent.

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Clinical Pathology, Faculty of Human MedicineZagazig UniversityZagazigEgypt
  2. 2.Department of Psychiatry, Faculty of Human MedicineZagazig UniversityZagazigEgypt

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