Oxidative/Nitrosative Stress in Patients With Modic Changes: Preliminary Controlled Study.

Area of Science:

• Biochemistry
• Pathophysiology
• Medical Imaging

Background:

• Low back pain is often linked to degenerated discs and endplate abnormalities.
• Oxidative/nitrosative stress is implicated in various diseases, but its role in Modic changes (MCs) was unstudied.
• Magnetic resonance imaging (MRI) is used to identify MCs, classifying them into types I, II, and III.

Purpose of the Study:

• To investigate and quantify oxidative/nitrosative stress biomarkers in patients with different types of Modic changes (MCs).
• To determine if oxidative/nitrosative stress contributes to the pathogenesis of low back pain associated with MCs.
• To compare stress levels across MC types I, II, and III and with healthy controls.

Main Methods:

• Enrolled 32 patients with MC types I, II, and III and 15 age/sex-matched controls.
• Measured nitrosative stress biomarkers: 3-nitrotyrosine (3-NT) and nitric oxide.
• Assessed oxidative stress biomarkers: catalase (CAT), superoxide dismutase (SOD) activities, and malondialdehyde (MDA) levels.

Main Results:

• Significantly elevated nitric oxide, 3-NT, and MDA, with decreased CAT and SOD activities in MC type I compared to controls.
• MC type II showed the highest CAT and SOD activities, with moderate increases in nitric oxide, 3-NT, and MDA.
• MC type III exhibited nitrosative stress biomarkers near control levels but slightly elevated oxidative stress biomarkers.

Conclusions:

• Oxidative/nitrosative stress is aggravated in MC type I, potentially causing lesions due to oxidant/antioxidant imbalance.
• Elevated antioxidant activities and moderate stress markers in MC types II and III suggest an adaptive response.
• Findings highlight the differential role of oxidative/nitrosative stress in the progression of Modic changes.