Browsing by Author "Demirel G."

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    Outcome of the Respiratory Syncytial Virus related acute lower respiratory tract infection among hospitalized newborns: A prospective multicenter study
    (Taylor and Francis Ltd, 2016) Alan S.; Erdeve O.; Cakir U.; Akduman H.; Zenciroglu A.; Akcakus M.; Tunc T.; Gokmen Z.; Ates C.; Atasay B.; Arsan S.; Anik A.; Turkmen M.K.; Erdogan Y.; Oygur N.; Kahvecioglu D.; Yildiz D.; Caner I.; Tekgunduz K.S.; Kurt A.; Yigit Y.; Bilgili G.; Bolat F.; Cevit O.; Ozlu F.; Satar M.; Ertugrul S.; Cakir B.; Unal S.; Iscan B.; Duman N.; Ergor S.N.; Yalaz M.; Celik I.; Celik U.; Hirfanoglu I.M.; Koc E.; Sivasli E.; Melekoglu N.A.; Kiray Bas E.; Bozkaya D.; Korkmaz A.; Ozdemir R.; Karadag A.; Ozer E.; Ilhan O.; Mutlu M.; Aslan Y.; Erener- Ercan T.; Cetinkaya M.; Sahin O.; Akin M.A.; Okumus N.; Demirel G.; Kilic A.; Turkoglu-Unal E.; Bulbul A.; Takci S.; Anuk-Ince D.; Ciftdemir N.A.; Acunas B.; Ozkan H.; Koksal N.; Okulu E.; Demir N.; Tuncer O.; Dizdar E.A.; Oguz S.; Dilmen U.
    Aim: To determine the incidence and outcomes of respiratory syncytial virus (RSV)-related acute lower respiratory tract infection (ALRI) including morbidity, nosocomial infection and mortality among newborn infants who were admitted to the neonatal intensive care units (NICUs).Methods: A multicenter, prospective study was conducted in newborns who were hospitalized with community acquired or nosocomial RSV infection in 44 NICUs throughout Turkey. Newborns with ALRI were screened for RSV infection by Respi-Strip®-test. Main outcome measures were the incidence of RSV-associated admissions in the NICUs and morbidity, mortality and epidemics results related to these admissions.Findings: The incidence of RSV infection was 1.24% (n: 250) and RSV infection constituted 19.6% of all ALRI hospitalizations, 226 newborns (90.4%) had community-acquired whereas 24 (9.6%) patients had nosocomial RSV infection in the NICUs. Of the 250 newborns, 171 (68.4%) were full-term infants, 183 (73.2%) had a BW >2500 g. RSV-related mortality rate was 1.2%. Four NICUs reported seven outbreaks on different months, which could be eliminated by palivizumab prophylaxis in one NICU.Conclusion: RSV-associated ALRI both in preterm and term infants accounts an important percent of hospitalizations in the season, and may threat other high-risk patients in the NICU. © 2015 Taylor & Francis.
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    LC–MS/MS analysis, antioxidant and anticancer effects of phenolic-rich extracts from Algerian propolis: a comparative study
    (Springer, 2023) Boulechfar S.; Akbulut Z.; Tepe H.D.; Zellagui A.; Aktas R.G.; Bensouici C.; Doyuk F.; Khattabi L.; Demirel G.; Lahouel M.
    The present study was aimed to compare the phenolic composition and the functional properties (antioxidant and anticancer) of phenolic-rich extracts of two different propolis collected from Collo (PREPC) and Oum El Bouaghi (PREPO) regions. The phenolic composition was determined using LC/MS–MS. The antioxidant activity of the extracts was evaluated using alkaline DMSO and β-carotene-linoleic acid tests. Anticancer effect on HepG2 human hepatocellular carcinoma cells was determined using CCK-8 assay. Twenty-two phenolic compounds in PREPC and twenty-three in PREPO were detected and quantified by LC–MS/MS. Ferulic and caffeic acids were found to be the predominant compounds. Both extracts were able to inhibit lipid peroxidation and demonstrated their ability to scavenge superoxide radicals more effectively than the standards. The highest lipid peroxidation inhibition (IC50 = 17.58 ± 1.98 μg/mL) and superoxide radical scavenging effects (IC50 = 6.19 ± 0.24 μg/mL) were exhibited by PREPO. However, PREPC showed stronger cytotoxic activity against HepG2 (IC50 = 12.22 ± 0.05 µg/mL) than PREPO (IC50 = 18.68 ± 0.33 µg/mL). These results demonstrate the potential of extracts from Algerian propolis to be used in functional formulations. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.