Research Article
Preliminary Study on the Tears Oxidative Stress Status and Sleep Disturbances in Irritable Bowel Syndrome Patients
Figure 4
Studied oxidative stress markers in IBS patients (IBS=all patients; IBS-C and IBS-D=IBS group stratified by IBS subtype) and age- and sex-matched healthy controls, measured from tears. (a) Superoxide dismutase activity (U/mg proteins). (b) Glutathione peroxidase activity (U/mg proteins). (c) Malondialdehyde concentration (μg MDA/mg proteins). (d) Total soluble proteins (mg/ml tears). The results are expressed as ( for control, 10 for IBS, 7 for IBS-C, and 3 for IBS-D, , ).
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