Browsing by Publisher "Wiley-Liss Inc."

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    Anthropometric findings from birth to adulthood and their relation with karyotpye distribution in Turkish girls with Turner syndrome
    (Wiley-Liss Inc., 2016) Sari E.; Bereket A.; Yeşilkaya E.; Baş F.; Bundak R.; Aydin B.K.; Darcan S.; Dündar B.; Büyukinan M.; Kara C.; Adal E.; Akinci A.; Atabek M.E.; Demirel F.; Çelik N.; Özkan B.; Özhan B.; Orbak Z.; Ersoy B.; Doğan M.; Ataş A.; Turan S.; Gökşen D.; Tarim O.; Yüksel B.; Ercan O.; Hatun S.; Şimşek E.; Ökten A.; Abaci A.; Döneray H.; Özbek M.N.; Keskin M.; Önal H.; Akyürek N.; Bulan K.; Tepe D.; Emeksiz H.C.; Demir K.; Kizilay D.; Topaloğlu A.K.; Eren E.; Özen S.; Demirbilek H.; Abali S.; Akin L.; Eklioğlu B.S.; Kaba S.; Anik A.; Baş S.; Unuvar T.; Sağlam H.; Bolu S.; Özgen T.; Doğan D.; Çakir E.D.; Şen Y.; Andiran N.; Çizmecioğlu F.; Evliyaoğlu O.; Karagüzel G.; Pirgon O.; Çatli G.; Can H.D.; Gürbüz F.; Binay C.; Baş V.N.; Fidanci K.; Gül D.; Polat A.; Acikel C.; Cinaz P.; Darendeliler F.
    To evaluate the anthropometric features of girls with Turner syndrome (TS) at birth and presentation and the effect of karyotype on these parameters. Data were collected from 842 patients with TS from 35 different centers, who were followed-up between 1984 and 2014 and whose diagnosis age ranged from birth to 18 years. Of the 842 patients, 122 girls who received growth hormone, estrogen or oxandrolone were excluded, and 720 girls were included in the study. In this cohort, the frequency of small for gestational age (SGA) birth was 33%. The frequency of SGA birth was 4.2% (2/48) in preterm and 36% (174/483) in term neonates (P<0.001). The mean birth length was 1.3cm shorter and mean birth weight was 0.36kg lower than that of the normal population. The mean age at diagnosis was 10.1±4.4 years. Mean height, weight and body mass index standard deviation scores at presentation were -3.1±1.7, -1.4±1.5, and 0.4±1.7, respectively. Patients with isochromosome Xq were significantly heavier than those with other karyotype groups (P=0.007). Age at presentation was negatively correlated and mid-parental height was positively correlated with height at presentation. Mid-parental height and age at presentation were the only parameters that were associated with height of children with TS. The frequency of SGA birth was found higher in preterm than term neonates but the mechanism could not be clarified. We found no effect of karyotype on height of girls with TS, whereas weight was greater in 46,X,i(Xq) and 45,X/46,X,i(Xq) karyotype groups. © 2016 Wiley Periodicals, Inc.
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    The Short-Term Effect of Occupational Levels of 50 Hz Electromagnetic Field on Human Heart Rate Variability
    (Wiley-Liss Inc., 2021) Binboğa E.; Tok S.; Munzuroğlu M.
    Previous studies have indicated that there is no consensus on the effects of extremely low-frequency electromagnetic (ELF-EMF) exposure on the cardiovascular system. This study aimed to explore the short-term effect of ELF-EMF exposure on heart rate (HR) and HR variability (HRV). The sample consisted of 34 healthy males aged 18–27 years. The participants were randomly assigned to the EMF (n = 17) or the Sham group (n = 17). We employed a double-blind repeated-measures design consisting of three 5 min experimental periods. The chest region of each individual in the EMF group was exposed to 50 Hz, 28 μT, linear polarized, continuous EMF during the EMF exposure period. HR and HRV data were recorded continuously by using a photoplethysmography sensor. Within-subject statistical analysis indicated a significant HR deceleration in both the EMF and Sham groups. However, the standard deviation of the NN intervals (SDNN), root mean square of successive differences (RMSSD), low-frequency (LF), and high-frequency (HF) powers increased only in the EMF group and remained stable in the Sham group. We also compared the same HRV indices measured during the EMF and Sham periods between the two experimental groups. The between-subject analysis results demonstrated significantly higher SDNN, RMSSD, LF, and HF values in the EMF group than in the Sham group. The LF/HF ratio did not change significantly within and between groups. On the basis of these results, we concluded that short-term exposure of the chest region to ELF-EMF could potentially enhance parasympathetic predominance during the resting condition. Bioelectromagnetics. 2021;42:60–75. © 2020 Bioelectromagnetics Society. © 2020 Bioelectromagnetics Society