Pre-radiotherapy plasma carotenoids and markers of oxidative stress are associated with survival in head and neck squamous cell carcinoma patients: a prospective study

Table 3 Oxidative stress biomarkers in healthy controls and patients, both pre- and post radiotherapy

Oxidative stress biomarkers^a	Controls	Patients
		Pre-radiotherapy^b	Post-radiotherapy^c
d-ROMS (CarrU)	155.9	219.6^d	249.8^d
GGT (U/L)	n.a.	38.9	59.4^e
8-iso PGF_2α (pg/mL)	n.a.	28.1	30.9^e
DHAA/TAA	0.085	0.089	0.116

^aMean values
^bPre-radiotherapy levels are compared with healthy controls after adjusting for age and BMI
^cPre- and post- radiotherapy levels are compared
^dp < 0.001, ^ep < 0.05
n.a. = not available

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