The Impact of Chemotherapy on Oxidant and Antioxidant Status in Acute Lymphoblastic Leukemia
Impact of Chemotherapy on Oxidant and Antioxidant Status
DOI:
https://doi.org/10.63841/iue3261023Keywords:
Acute lymphoblastic leukemia, Antioxidant, Chemotherapy, Oxidative stress, Reactive oxygen species.Abstract
Acute lymphoblastic leukemia (ALL) is a malignant disorder of lymphoid lineage. Chemotherapy remains the mainstay of treatment, yet it induces systemic damage partly through oxidative stress, which may worsen prognosis, increase relapse risk, and impair responsiveness to therapy.
A total of 64 individuals participated in the study: 21 newly diagnosed ALL (ND-ALL) patients with a median age of 10 years (IQR 3-27.5), 23 patients receiving maintenance chemotherapy with a median age of 13 years (IQR 5-23), and 20 healthy controls with a median age of 11.5 years (IQR 5-23), (cross-sectional study). Following remission induction treatment, ND-ALL patients were also reassessed (longitudinal study). ELISA kits were used to detect superoxide dismutase (SOD), glutathione peroxidase (GSH-PX), total antioxidant capacity (T-AOC), malondialdehyde (MDA), 8-hydroxy-2′-deoxyguanosine(8-OHdG), and protein carbonyl (PC).
In the cross-sectional study, MDA (p = 0.05) and 8-OHdG (p = 0.001) were significantly higher in ND-ALL patients. SOD demonstrated a considerable decline (p = 0.001), the antioxidants GSH-PX and T-AOC also decreased significantly (p = 0.01). There were no significant differences between the maintenance group and the controls. Significant increases in MDA, 8-OHdG, and PC (p = 0.05, 0.01, 0.01, respectively), and decreases in GSH-PX, SOD, and T-AOC (p = 0.01, 0.05, 0.01, respectively) were observed following treatment.
Chemotherapy significantly alters the oxidant-antioxidant balance in patients with ALL. Treatment was associated with an increase in oxidative stress markers, accompanied by a marked reduction in antioxidant defense capacity.
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