Neutrophil-Lymphocyte Ratio and Platelet-Lymphocyte Ratio in Methamphetamine Use Disorder

Area of Science:

• Neuroscience
• Immunology
• Toxicology

Background:

• Methamphetamine (METH) is a potent central nervous system stimulant and a widely used illicit drug.
• METH rapidly enhances neurotransmitter release, impacting various physiological systems.
• Understanding METH's effects on the immune system is crucial for comprehensive patient care.

Purpose of the Study:

• To investigate the relationship between methamphetamine use disorder and specific immune markers.
• To compare neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR) in METH users versus healthy controls.
• To explore potential correlations between NLR/PLR and METH dosage.

Main Methods:

• A case-control study involving 84 patients with METH use disorder and 81 healthy controls.
• Exclusion of participants with hematological disorders or chronic diseases.
• Comparison of white blood cell counts, neutrophil, lymphocyte, and platelet counts to calculate NLR and PLR.

Main Results:

• NLR and PLR were significantly lower in patients with METH use disorder compared to controls.
• No significant differences in age, sex, BMI, smoking, or alcohol consumption between groups.
• NLR and PLR showed a positive correlation with the daily dosage of METH used.

Conclusions:

• This study is the first to report lower NLR and PLR in individuals with METH use disorder.
• The findings suggest that METH significantly affects the immune system.
• Further longitudinal studies are recommended to understand METH's impact across intoxication, detoxification, and remission phases.