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Relationship Between Neutrophil-Lymphocyte Ratio and Treatment Retention in Individuals with Opioid Use Disorder

Published online by Cambridge University Press:  27 August 2024

Y. Taylan
Affiliation:
1İstanbul Sultanbeyli State Hospital, İstanbul
M. B. Sönmez*
Affiliation:
2Trakya University School of Medicine, Edirne, Türkiye
*
*Corresponding author.

Abstract

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Introduction

Inflammatory processes may play a role in the pathophysiology of substance use disorders. Chronic opiate use may lead to inflammation, and elevated inflammation markers have been observed in individuals with opioid use disorder (OUD). The Neutrophil-Lymphocyte Ratio (NLR) serves as an indicator of systemic inflammation. NLR can be employed in both diagnosis and treatment monitoring as an inflammatory marker to gauge the severity of OUD.

Objectives

Our aim was to assess the utility of NLR as a marker of chronic inflammation in diagnosing and monitoring treatment in individuals with OUD.

Methods

A total of 200 patients with OUD and 78 healthy control subjects were enrolled in the study. Patients were initially admitted to a 28-day abstinence-based inpatient program and subsequently transitioned to outpatient buprenorphine/naloxone (B/N) maintenance treatment after hospitalization at the Alcohol and Substance Addiction Treatment Center in Trakya University School of Medicine (Edirne, Türkiye). NLR was employed as a measure of systemic inflammation. Blood samples were collected the morning following admission for detoxification. Patients were categorized into two groups: the treatment retention group and the dropout/relapse group based on their 3-month and 12-month follow-up results. Clinical data were obtained from patient records.

Results

At the 3-month follow-up, the median NLR with interquartile range was 1.34 (1.05-1.99) in the treatment retention group (n=112) and 1.72 (1.11-2.46) in the dropout/relapse group (n=88). At the 12-month follow-up, the median NLR with interquartile range was 1.28 (0.88-1.85) in the treatment retention group (n=52) and 1.56 (1.07-2.33) in the dropout/relapse group (n=148). The median NLR in the control group (n=78) was 1.36 (1.12-1.74). According to the 3-month and 12-month follow-up data, the difference between the groups concerning NLR was statistically significant (χ2=9.072, p=0.011; χ2=11.165, p=0.004; respectively). Pairwise comparisons indicated that patients in the dropout/relapse group had significantly higher baseline NLR values than those in the treatment retention group and healthy controls according to the 3-month (p=0.038 and p=0.019, respectively) and 12-month follow-up data (p=0.012 and p=0.040, respectively). NLR did not differ significantly between the treatment retention and control groups in both follow-ups (p>0.05).

Conclusions

Our findings suggest that elevated baseline NLR is associated with dropout/relapse in OUD, indicating its potential as a marker for treatment follow-up in these patients.

Disclosure of Interest

None Declared

Type
Abstract
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of European Psychiatric Association
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