1 Ocak 2021 Dergi makalesi Açık Erişim

Akisu, Mete; Durmaz, Burak; Koroglu, Ozge Altun; Unlubay, Sema; Yalaz, Mehmet; Akin, Haluk; Ates, Utku; Baka, Meral; Ozkinay, Ferda; Cogulu, Ozgur; Kultursay, Nilgun

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    <subfield code="a">The effects of IGF-1 and erythropoietin on apoptosis and telomerase activity in necrotizing enterocolitis model</subfield>
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    <subfield code="p">PEDIATRIC RESEARCH</subfield>
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    <subfield code="a">Background Apoptosis that occurs after hypoxia/reoxygenation (H/R) has an important role in the pathogenesis of necrotizing enterocolitis (NEC). Telomerase activity, showing the regeneration capacity, may also be important in the recovery process. Therefore, we aimed to investigate the effects of insulin-like growth factor-1 (IGF-1) and erythropoietin (EPO) on apoptosis and telomerase activity in an H/R model. Methods Young mice were divided into four groups each containing ten Balb/c mice. Group 1 (H/R) were exposed to H/R; group 2 and group 3 were pretreated with IGF-1 and EPO, respectively, for 7 days before H/R. Group 4 served as control. Intestinal injury was evaluated by histological scoring and assessment of apoptosis was performed by terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) test. Proapoptotic and antiapoptotic gene expressions and telomerase activity were analyzed by real-time PCR. Results IGF-1- and EPO-treated animals had decreased histological damage and apoptosis, confirmed by TUNEL test and caspase activity. Telomerase activity was increased in these animals in addition to increased expression of antiapoptotic genes. However, proapoptotic gene expressions were not statistically different. Conclusions The protective effects of IGF-1 and EPO in H/R damage may be through increased expression of antiapoptotic genes and increased telomerase activity, especially for IGF-1. Impact This is a comprehensive study measuring various variables, namely IGF-1, EPO, apoptosis, apoptotic and antiapoptotic genes, and telomerase activity in the NEC model. The intestinal protective effects of IGF-1 and EPO in H/R damage may occur through increased expression of antiapoptotic genes and increased telomerase activity. To the best of our knowledge, telomerase activity has not been investigated in the NEC model before. Regarding our results, novel strategies may be implemented for the early definitive diagnosis, robust preventive measures, and effective treatment modalities for NEC.</subfield>
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    <subfield code="u">Ege Univ, Dept Med Genet, Fac Med, Izmir, Turkey</subfield>
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    <subfield code="u">Ege Univ, Div Neonatol, Dept Pediat, Fac Med, Izmir, Turkey</subfield>
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