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    Phototherapy causes a transient DNA damage in jaundiced newborns
    (INFORMA HEALTHCARE, 2013) Kahveci, Hasan; Dogan, Hasan; Karaman, Ali; Caner, Ibrahim; Tastekin, Ayhan; Ikbal, Mevlit
    In this study, we aimed to clarify the following questions: 1) Does phototherapy (PT) cause genotoxicity in full-term newborn babies undergoing PT as a result of neonatal jaundice?, 2) if genotoxic effect occurs, is there any relationship between the duration of PT and genotoxicity?, and 3) is genotoxic effect temporary or not? The frequency of sister chromatid exchange (SCE) was determined in jaundiced newborns before, during, and after phototherapy, then determined again in childhood (approximately 3.5 years old). Mean frequency of SCE of 22 full-term jaundiced babies significantly increased during the PT procedure and in every single day, compared to the previous day, in comparison to the pre-PT basal value (6.20 +/- 0.57;); mean SCE frequencies at 24, 48, 72, and 96 hours were 7.75 +/- 0.40, 8.16 +/- 0.47, 8.50 +/- 0.40, and 9.36 +/- 0.55, respectively (all P-values < 0.01). In childhood, no significant difference was found between the mean SCE value (4.9 +/- 0.9) of 20 of 22 children, who received PT in the neonatal period, and the mean SCE value (4.7 +/- 0.6) of 20 coevaluated healthy children (P = 0.40). This study demonstrates that the negative effect of PT on SCE is a temporary effect.
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    Protective effect of L-carnitine in a rat model of retinopathy of prematurity
    (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2014) Keles, Sadullah; Caner, Ibrahim; Ates, Orhan; Cakici, Ozgur; Saruhan, Fatih; Mumcu, Ugur Yilmaz; Unal, Deniz
    Aim: To investigate the effects of L-carnitine (LC) on rats with oxygen-induced retinopathy. Materials and methods: The study was conducted on 40 Sprague Dawley rat pups. The rat pups were randomly divided into 4 groups: group 1 (n = 10), the healthy control group with intraperitoneal 0.1 mL/day physiological saline injection; group 2 (n = 10), exposed to hyperoxygen, did not receive LC but received 0.1 mL/day physiological saline intraperitoneally; group 3 (n = 10), exposed to hyperoxygen and received 100 mg/kg/day LC intraperitoneally; group 4 (n = 10), exposed to hyperoxygen and received 200 mg/kg/day LC intraperitoneally. After postnatal day 20, the rat pups were killed and an histological examination was performed on the eyes, in addition to the detection of plasma malondialdehyde (MDA) levels. Results: The retinal and choroidal histopathological changes due to hyperoxygen were less in group 3 and minimal in group 4 compared with group 2. Compared with the healthy control group, the increase in the MDA levels in group 2 was significant (P < 0.05). Compared with group 2 there was a significant (P < 0.05) decrease in the MDA levels in groups 3 and 4. Conclusion: LC has beneficial effects on oxygen-induced retinopathy in rats in terms of histopathological changes and MDA levels.