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    Assessment of magnesium status in newly diagnosed diabetic children: measurement of erythrocyte magnesium level and magnesium tolerance testing
    (Turkish J Pediatrics, 2005) Şimşek, Enver; Karabay, Meltem; Kocabay, Kenan
    The aim of this study was to investigate the relationship between serum, erythrocyte and urine magnesium levels and retained magnesium percentage in newly diagnosed diabetic children. In a cross-sectional study, 34 children with insulin dependent diabetes mellitus (IDDM) and 21 healthy age- and sex-matched control subjects were screened for their serum, erythrocyte, and urine magnesium levels. Magnesium tolerance test was performed on diabetic and control subjects: Serum and erythrocyte magnesium levels in diabetic children were significantly lower than in healthy controls (plasma magnesium, p < 0.05; erythrocyte magnesium, p < 0.001); however, serum magnesium level was in normal range in diabetics and controls. Erythrocyte magnesium levels in diabetic children showed an inverse correlation with percentage of retained magnesium load (r=-0.44, p < 0.01). Urine magnesium excretion in diabetic children (7.12 +/- 2.18 mmol/g creatinine/24-hr) was significantly higher than in healthy controls (4.0 +/- 1.35 mmol/g creatinine/24-hr) (p < 0.001). There was a negative correlation between erythrocyte magnesium (2.07 +/- 0.62 mmol/L) and urine magnesium (7.12 +/- 2.18 mmol/g creatinine/24-hr) (r=-0.68 p < 0.01) in diabetic children. Magnesium tolerance test showed that percentage of retained magnesium in diabetic children (66 +/- 26%) was significantly higher than in controls (16 +/- 7%) (p < 0.001). This study is the first study to simultaneously investigate serum, erythrocyte and urine magnesium levels and magnesium tolerance test in newly diagnosed diabetic children. In conclusion, erythrocyte magnesium levels decrease earlier than serum magnesium in diabetic children. The follow-up parameters in diabetics may include the policy of monitoring magnesium status. Erythrocyte magnesium measurement is preferred to serum magnesium. Magnesium tolerance test is a reliable and sensitive method, which may be used as an alternative to erythrocyte magnesium measurement or in combination with it in hospitalized diabetic children.
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    COMPARISON OF HCV RNA AND HCV CORE ANTIGEN IN GENOTYPE 1 CHRONIC HEPATITIS C PATIENTS
    (Carbone Editore, 2014) Karabay, Oğuz; Öğütlü, Aziz; Ankaralı, Handan; Özdemir, Fatma; Karabay, Meltem; Gözdaş, Hasan Tahsin
    Background: Anti-HCV test is currently used in the diagnosis of hepatitis C, while hepatitis C virus ribonucleic acid (HCV RNA) is used in the determination of viral load. Recently developed hepatitis C virus core antigen (HCV Ag) test is also used in the diagnosis of hepatitis C. The aim of this study was to compare HCV Ag and quantitative HCV RNA in terms of sensitivity and specificity as well as pharmacoeconomic footprint. Patients and methods: Sixty patients with positive anti-HCV were enrolled to this study. Quantitative HCV RNA was studied by ready commercial kits (Qiagen, lower limit of <12 IU/ml). HCV Ag test was studied with microparticule chemiluminiscent immunoassay method using ready commercial kits (Architect HCV Ag, Abbott). Conclusions: HCV Ag and HCV RNA levels were measured in the sera of chronic hepatitis C patients. Quite high correlation was found between the two tests (r = 0.83). According to our results, HCV Ag test may be an alternative to quantitative reverse transcription polymerase chain reaction (PCR) test. Thus, use of HCV Ag in place of HCV RNA will be more cost-effective for countries with limited sources.
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    Frequency of nasal helicobacter pylori carriage among cooks
    (Pakistan Medical Assoc, 2013) Karabay, Oğuz; Güçlü, Ertuğrul; Kocoğlu, Esra; Özdemir, Davut; Şencan, İrfan; Karabay, Meltem; Gözdaş, Hasan Tahsin
    Objective: To investigate the frequency of nasal helicobacter pylori carriage among cooks living in Bolu, Ardahan and Sakarya province of Turkey. Methods: A total of 54 cooks (10 from Bolu, 29 from Ardahan and 15 from Sakarya) were enrolled. Nasal helicobacter was tested using polymerase chain reaction. Results: Helicobacter pylori was detected in only one cook. Conclusion: Nasal Helicobacter pylori colonisation ratio in cooks in Turkey was found to be very low. Presumably hand hygiene compliance lowered the frequency.