• Ömer Karaca, Hüseyin Ulaş Pinar, Ahmet Fevzi Özgür, Sevsen Kulaksizoğlu, and Rafi Doğan.
• Turk J Med Sci. 2019 Dec 16; 49 (6): 1693-1700.

Background/AimThe aim of this study was to investigate the efficacy of pregabalin on ischemia-reperfusion injuries.Materials And MethodsFifty-four patients were randomly assigned into 2 groups. A 150-mg tablet of pregabalin was given the night before and then 1 h before the operation for patients in Group P (pregabalin group, n = 27). A placebo was given to patients in Group C (control group, n = 27) at the same times. After combined spinal-epidural anesthesia was performed, venous blood samples were taken before tourniquet inflation (t1), just before tourniquet deflation (t2), and 20 min after tourniquet deflation (t3) for the analysis of total antioxidant status (TAS), total oxidant status (TOS), catalase (CAT), and ischemia-modified albumin (IMA).ResultsThere was no significant difference in TAS levels between the groups for the t3 period. However, the TAS in Group P was significantly higher in the t3 period than the t2 period (mean ± SD, 0.46 ± 0.1 vs. 0.38 ± 0.2 mmol of Trolox equivalent/L, respectively; P < 0.05). The CAT level in the t3 period was significantly higher in Group P than Group C (mean ± SD, 53.04 ± 32.1 vs. 35.46 ± 17.2 μmol/ formaldehyde, respectively; P < 0.05). In the t3 period, the TOS was significantly lower in Group P than Group C (mean ± SD, 11.97 ± 5 vs. 18.29 ± 9.9 pg/mL, respectively; P < 0.05). The TOS in Group P was significantly lower in the t3 period than the t2 period (mean ± SD, 11.97 ± 5 vs. 18.98 ± 10.7 pg/mL, respectively; P < 0.0001).ConclusionPregabalin has no marked antioxidant activity, but it contributes to the antioxidant defense system of an organism.This work is licensed under a Creative Commons Attribution 4.0 International License.

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