• Hee Young Kim, Seung-Hoon Baek, Seong Wan Baik, Sun Sik Bae, Jung Min Ha, Minkyoung Kim, Gyeong-Jo Byeon, Hye Jin Kim, Hyun-Su Ri, and So Hyun Kim.
• Department of Anesthesia and Pain Medicine, Pusan National University Yangsan Hospital, 20, Geumo-ro, Beomeo-ri, Mulgeumeup, Yangsan, 626-770, Republic of Korea.
• J Anesth. 2018 Apr 1; 32 (2): 204-210.

BackgroundSevoflurane is commonly used in general anesthesia for premature neonates. The main mechanism of retinopathy of prematurity (ROP) is increased levels of vascular endothelial growth factor (VEGF). For the investigation of sevoflurane's effect on angiogenesis, the angiogenesis and VEGF expression in the retina were measured after administering sevoflurane in an oxygen-induced retinopathy mice model.Materials And MethodsThe mice were divided into the normoxic group (Nc and Ns group; n = 6) and the ROP group (C, Rc, and Rs group; n = 6). Rc group were exposed to 75% oxygen for 5 days beginning on postnatal day (P) 7, and then returned to room air. Age-matched mice in the C group were exposed to room air. To observe angiogenesis of the retina, the mice were sacrificed on P16. The Rs group was exposed to 2 vol% sevoflurane for 2 h on P12, P13, and P14 with 40% oxygen.ResultsThe angiogenic area and the spreading distance of vessels on P4 were statistically decreased in the Ns group, compared to the Nc group. The avascular area on P16 was significantly increased and the expression of VEGF was suppressed in the Rs group compared to the Rc group.ConclusionsSevoflurane can inhibit retinal angiogenesis via suppressing VEGF expression in an OIR mice model with exposure to relative hypoxia. Nevertheless, it is still difficult to apply the results of this study immediately to humans because of the heterogeneity of responses to sevoflurane.

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