Gamze Demirel

Dr. Zekai Tahir Burak Women's Health Research and Education Hospital, Engüri, Ankara, Turkey

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Publications (50)65.14 Total impact

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    ABSTRACT: Cytomegalovirus (CMV) may transmit perinatally or from breast milk. The risk for development of symptomatic CMV disease in very-low-birth-weight premature infants after transmission from maternal breast milk is not clear. There are scarce data in the literature about congenital CMV infection in multiple pregnancies, being mostly with twin gestations. Here we present a unique case of triplets with CMV infection transmitted via breast milk.
    Journal of Tropical Pediatrics 10/2013; · 1.01 Impact Factor
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    ABSTRACT: To evaluate the efficacy of orally administered Saccharomyces boulardii (S. boulardii) for reducing the incidence and severity of necrotising enterocolitis (NEC) in very low-birth-weight (VLBW) infants. A prospective, randomised controlled trial was conducted in infants with gestational age ≤32 weeks and birth weight ≤1500 g. The study group received S. boulardii supplementation, and the control group did not. The primary outcomes were death or NEC (Bell's stage ≥2), and secondary outcomes were feeding intolerance and clinical or culture-proven sepsis. A total of 271 infants were enrolled in the study, 135 in the study group and 136 in the control group. There was no significant difference in the incidence of death (3.7% vs. 3.6%, 95% CI of the difference, -5.20-5.25; p = 1.0) or NEC (4.4% vs. 5.1%, 95% CI, -0.65-5.12; p = 1.0) between the groups. However, feeding intolerance and clinical sepsis were significantly lower in the probiotic group compared with control. Although S. boulardii supplementation at a dose of 250 mg/day was not effective at reducing the incidence of death or NEC in VLBW infants, it improved feeding tolerance and reduced the risk of clinical sepsis. This article is protected by copyright. All rights reserved.
    Acta Paediatrica 09/2013; · 1.97 Impact Factor
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    ABSTRACT: Citrulline, a nonprotein amino acid, is an intermediate of the urea cycle and synthesized in small intestine. Lower plasma citrulline levels were associated with reduced function of enterocytes. Necrotizing enterocolitis (NEC) causes high morbidity and mortality, and leads impaired intestinal functions. Plasma citrulline levels of neonates with a gestational age <32 weeks and ≤1,500 gm who developed NEC stage II/III were measured by high-performance liquid chromatography. We enrolled 36 preterm infants including 20 with NEC and 16 controls. Median citrulline levels of NEC and control groups were 8.6 and 20.18 μmol/l (P < 0.05), and cut off level of citrulline was 13.15 μmol/l with a sensitivity of 80% and a specificity of 82%. Median arginine levels of NEC and control groups were 22.02 and 39.89 μmol/l (P < 0.05), and cut off level of arginine was 28.52 μmol/l with a sensitivity of 70% and a specificity of 75%. Blood sampling day, gender, parenteral, and enteral nutrition did not affect the amino acid levels. We found lower plasma citrulline and arginine levels in preterm infants with NEC. Further studies are needed to determine most appropriate levels to predict recovery and prognosis of NEC, and treatment options with these amino acids in preterm infants.
    Journal of Clinical Laboratory Analysis 07/2013; 27(4):328-32. · 1.36 Impact Factor
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    ABSTRACT: AIM: This study aims to compare the efficacy of orally administered Saccharomyces boulardii versus nystatin in prevention of fungal colonization and invasive fungal infections in very low birth weight infants. METHOD: A prospective, randomized comparative study was conducted in preterm infants with a gestational age of ≤32 weeks and birth weight of ≤1,500 g. They were randomized into two groups, to receive S. boulardii or nystatin. Skin and stool cultures were performed for colonization and blood cultures for invasive infections, weekly. RESULTS: A total of 181 infants were enrolled (S. boulardii group, n = 91; nystatin group, n = 90). Fungal colonization of the skin (15.4 vs 18.9 %, p = 0.532) and the stool (32.2 vs 27 %, p = 0.441) were not different between the probiotic and nystatin groups. Two patients had Candida-positive blood culture in the nystatin group whereas none in the probiotic group. Feeding intolerance, clinical sepsis, and number of sepsis attacks were significantly lower in the probiotics group than in the nystatin group. CONCLUSION: Prophylactic S. boulardii supplementation is as effective as nystatin in reducing fungal colonization and invasive fungal infection, more effective in reducing the incidence of clinical sepsis and number of sepsis attacks and has favorable effect on feeding intolerance.
    European Journal of Pediatrics 05/2013; · 1.91 Impact Factor
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    ABSTRACT: As scant information is present about the effect of water birth on newborns, we aimed to detect the fetal outcomes of water birth. A hundred and ninety one among totally 220 newborns who were born by water birth were enrolled. The demographic and clinical features of the patients, birth complications, infection rates and rates of neonatal intensive care unit attendance were evaluated. The mean gestational week and birth weight were 39.2±1.3 weeks and 3326±409 g. 26% of the mothers was primiparous. Birth trauma was observed in three patients (1.6%) as one brachial nerve paralysis, one cord rupture and one cephal hematoma. Six of the patients (3.1%) were admitted to neonatal intensive care unit (NICU); four of whom had respiratory tract problems. Water birth is a safe method of delivery for the neonates when certain criteria are met.
    European review for medical and pharmacological sciences 05/2013; 17(10):1395-8. · 1.09 Impact Factor
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    ABSTRACT: Invasive fungal sepsis has become the third most common cause of late-onset infections in many neonatal intensive care units (NICU). The prevalence rate ranges from 2.6% to 16.7% among very-low-birth-weight infants and from 5.5% to 20% among extremely low-birth-weight infants. Despite the development of several new antifungal agents in the past few years, the management of serious fungal infections in the newborn continues to be problematic. Voriconazole treatment was given to 17 newborns with invasive fungal sepsis, in initial doses of 2-3 mg/kg twice daily. In spite of the complications of cholestasis and liver function abnormality in 2, the dose regimen was 4-6 mg/kg (loading dose), followed by initial doses of 2-3 mg/kg twice daily. Drug cessation did not occur, and no permanent side effects were observed. In the end, 12 patients had been cured with antifungal treatment. Voriconazole at this dosage common with other antifungal agents or alone appears to be a safe and effective antifungal agent for neonatal invasive fungal sepsis. Based on relevant literature, to the best of our knowledge, ours is the largest case series to underline this issue. However, further studies are required to determine the pharmacokinetics (e.g. serum half-life, concentration, time of peak concentration, and distribution) of voriconazole use in newborns.
    European review for medical and pharmacological sciences 03/2013; 17(6):729-34. · 1.09 Impact Factor
  • The Pediatric Infectious Disease Journal 03/2013; 32(3):301. · 3.57 Impact Factor
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    ABSTRACT: Abstract Objective: To evaluate the efficacy of nasal intermittent mandatory ventilation (NIMV) in reducing the duration of respiratory distress compared with nasal continuous positive airway pressure (NCPAP) in transient tachypnea of the newborn (TTN). Patient and methods: İn this randomized-prospective study, 40 infants with a gestational age ≥37 weeks and birth weight ≥2000 g with TTN were randomized to either nonsynchronized NIMV (n = 20) or NCPAP (n = 20). The primary end point was the reduction of the duration of respiratory distress. Secondary end points were the duration and level of oxygen supplementation, the incidence of complications such as pneumothorax, pneumonia and respiratory failure requiring entubation. Results: There were no significant difference in the duration of respiratory support (28.0 ± 19.2 h versus 32.2 ± 23.3 h, p = 0.231), O2 therapy (31.2 ± 15.6 h versus 29.0 ± 19.3 h, p = 0.187), duration of TTN (67.6 ± 36.5 h versus 63.3 ± 39.1 h, p = 0.480) and hospitalization (6.2 ± 2.6 d versus 5.4 ± 2.0 d, p = 0.330) between the groups. The rate of complications were not significantly different between the groups. Conclusion: Our study indicates that NIMV is well tolerated and as effective as NCPAP in the treatment of TTN.
    The journal of maternal-fetal & neonatal medicine: the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians 02/2013; · 1.36 Impact Factor
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    ABSTRACT: Hepatitis B virus (HBV) infection continues to be a serious global health problem. During the course of HBV vaccination, we observed C-reactive protein (CRP) elevation in term infants without sepsis. Therefore, we prospectively studied interleukin-6 (IL-6) and CRP responses to HBV immunization. In 70 healthy term infants without signs and symptoms of sepsis and sepsis risk factors, IL-6, CRP, and white blood cell count levels were determined before and 24 h after immunization. Significant increases in CRP levels were seen 24 h after vaccination (p < 0.001). Although CRP levels of 22 infants at second evaluation were above the cutoff level for sepsis (4.82 mg/L), they had no clinical signs and symptoms of sepsis. After 48-72 h, CRP levels of these infants returned to normal levels with no blood culture positivity. Conclusion: our study showed that HBV vaccine is responsible for CRP elevation in term infants after vaccination at birth. To the best of our knowledge, this is the first study evaluating CRP response to HBV vaccine at birth in term infants. We suggest that this response should be considered in differentiation of early neonatal sepsis to avoid unnecessary antibiotic use.
    European Journal of Pediatrics 01/2013; · 1.91 Impact Factor
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    ABSTRACT: Congenital laryngeal cyst is a rare cause of airway obstruction that may require urgent diagnosis and treatment. We report a case of a neonate having history of polyhydramnios and severe respiratory distress at birth. A laryngeal cyst detected during intubation. The outcome of laryngoscopic treatment of the cyst was favorable.
    APSP journal of case reports. 01/2013; 4(2):12.
  • Journal of Paediatrics and Child Health 01/2013; 49(1):E105-6. · 1.25 Impact Factor
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    ABSTRACT: AIM: To evaluate the significance of the cord blood ischemia-modified albumin (IMA) level as a diagnostic marker for perinatal asphyxia and to determine the associations of IMA levels with the complexity of pregnancy and abnormal Doppler findings, regardless of perinatal asphyxia. METHODS: This prospective study included 169 newborns, sixteen of whom had perinatal asphyxia and 33 who were from complicated pregnancies. Doppler measurements were obtained from the uterine, umbilical and middle cerebral arteries, and the cerebro/placental ratio (C/P). IMA was measured by means of commercially available ELISA kits and was expressed as picomoles per milliliter. RESULTS: Ischemia-modified albumin levels were significantly higher in neonates of complicated pregnancies as compared to uncomplicated pregnancies (P < 0.0001). They were higher in newborns with perinatal asphyxia as compared to healthy controls (P = 0.015). The C/P ratio-pulsatility index (PI) showed a significant difference between normal and complicated pregnancies without perinatal asphyxia (P < 0.0001). IMA levels were significantly increased in cases with abnormal C/P ratio-PI. CONCLUSIONS: Elevated cord blood IMA levels may be accepted as a useful marker in perinatal asphyxia. Abnormal Doppler examinations are associated with elevated IMA levels in complicated pregnancies.
    Journal of Obstetrics and Gynaecology Research 12/2012; · 0.84 Impact Factor
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    ABSTRACT: Abstract Compared with term infants, late preterm infants are immature physiologically and metabolically, and have higher risks for medical complications such as respiratory distress, hypoglycemia, hyperbilirubinemia, sepsis, feeding difficulty, and poor neurodevelopmental outcomes. The incidence of late preterm birth is increasing. We evaluated the clinical and demographic characteristics, short-term outcomes, and clinical courses of late preterm infants admitted to our neonatal intensive care unit (NICU). Data from NICU admissions of 605 late preterm and 1477 term infants in the 1-year period between June 2010 and May 2011 were analyzed. There were 2004 late preterm deliveries and 18,854 total deliveries. Of late preterm infants, 30% were admitted to the NICU. The mean gestational age and birth weight were 35(1/7) weeks and 2352 g, respectively. The admission diagnoses were respiratory distress (46.5%), low birth weight (17.5%), jaundice (13.7%), feeding difficulty (13.1%), polycythemia (8.1%), and hypoglycemia (4%); these morbidity rates were higher than those in term infants (p<0.001). The overall mean hospitalization period was 7.5 ± 9.1 days. The respective mortality and rehospitalization rates were 2.1% and 4.4%, which were higher than those for term infants (p<0.001). In conclusion, late preterm infants should be followed closely for the complications just after birth, and preventive strategies should be developed.
    The journal of maternal-fetal & neonatal medicine: the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians 10/2012; · 1.36 Impact Factor
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    ABSTRACT: AIM: To determine reference values for cystatin C (CysC) and its correlation with creatinine (Cr), gestational age, birth weight and maternal Cr status in very low birth weight (VLBW) preterm infants. METHOD: The study included 113 VLBW premature infants (<1500 g) of ≤32 gestational week. Serum Cr and Cys C of the infant and serum Cr of the mother were analysed. RESULTS: The mean level of CysC was 1.77 ± 0.38 mg/L on day 1 and 1.61 ± 0.37 mg/L on day 3, and the decrease was statistically significant. There was a significant correlation only between maternal Cr and first-day Cr values and negative correlations between Cr and gestational age and birth weight on third day. Creatinine was not correlated with CysC both on day 1 (r=-0.077, p=0.417) and day 3 (r=0.132, p=0.164). CONCLUSION: Here we report the reference ranges for CysC and Cr on first and third day in VLBW infants. Cys C concentrations significantly decrease by day 3 compared to day 1 and are independent of gestational week, birth weight and maternal renal function status in VLBW preterm infants. © 2012 The Author(s)/Acta Paediatrica © 2012 Foundation Acta Paediatrica.
    Acta Paediatrica 09/2012; · 1.97 Impact Factor
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    ABSTRACT: Our aim was to assess trends in neonatal mortality in 2009, evaluate advances in health policy, determine new goals to preserve a higher quality health service, and to prevent neonatal deaths. Data were gathered from the system of the General Directorate of Mother and Child and Family Planning. Maternal age, birth weight, gestational week, delivery at a health center, delivery by trained assistant, antenatal visits, and cause of death were evaluated. The neonatal mortality rate was 10/1,000 in Turkey in 2009, significantly better than rates of 26 in 1998, 17 in 2003, and 13 in 2008. The percentage of pregnant women making a minimum of four antenatal visits was around 80 %. Most deaths were attributable to prematurity and its complications, including 47.2 % of early neonatal mortality (ENM) and 36.1 % of late neonatal mortality (LNM). In ENM, the next-most common causes of death were congenital anomalies other than heart and genetic disorders (17.5 %), infections (6.5 %), asphyxia (6.1 %), and congenital heart disease (4.0 %), whereas in LNM, they were infections (19.9 %), congenital anomalies other than heart and genetic disorders (13.1 %), congenital heart disease (7.7 %), and asphyxia (3.8 %). Neonatal mortality in Turkey has declined within 8 years to level similar to that reached by Organisation for Economic Co-operation and Development countries over 30 years. Our findings show that each of the major causes of the neonatal death can be prevented by available interventions. Interventions to prevent prematurity, early diagnosis of congenital anomalies, and the prevention of infections would contribute to further reductions in neonatal mortality in Turkey.
    Maternal and Child Health Journal 09/2012; · 2.24 Impact Factor
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    ABSTRACT: INTRODUCTION: Neonatal sepsis remains an important clinical syndrome despite advances in neonatology. Current hematology analyzers can determine cell volume (V), conductivity for internal composition of cell (C) and light scatter for cytoplasmic granularity and nuclear structure (S), and standard deviations which are effective in the diagnosis of sepsis. Statistical models can be used to strengthen the diagnosis. Effective modeling of molecular activity (EMMA) uses combinatorial algorithm of the selection parameters for regression equation based on modified stepwise procedure. It allows obtaining different regression models with different combinations of parameters. METHODS: We investigated these parameters in screening of neonatal sepsis. We used LH780 hematological analyzer (Beckman Coulter, Fullerton, CA, USA). We combined these parameters with interleukin-6 (IL-6) and C-reactive protein (CRP) and developed models by EMMA. RESULTS: A total of 304 newborns, 76 proven sepsis, 130 clinical sepsis and 98 controls, were enrolled in the study. Mean neutrophil volume (MNV) and volume distribution width (VDW) were higher in both proven and clinical sepsis groups. We developed three models using MNV, VDW, IL-6, and CRP. These models gave more sensitivity and specificity than the usage of each marker alone. CONCLUSIONS: We suggest to use the combination of MNV and VDW with markers such as CRP and IL-6, and use diagnostic models created by EMMA.
    International journal of laboratory hematology 09/2012; · 1.30 Impact Factor
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    ABSTRACT: Objective: To evaluate the efficacy of orally administered Saccharomyces boulardii (S. boulardii) on the course of hyperbilirubinemia and duration of treatment in very low birth weight (VLBW) infants. Methods: Infants with a gestational age of ≤32 weeks and birth weight of ≤1500 g were enrolled. The infants in the study group were given S. boulardii with a dose of 250 mg once a day and the infants in the control group were fed without S. boulardii supplementation. The primary outcome measurements were duration of phototherapy and levels of total bilirubin at the end of phototherapy. Results: A total of 179 infants (81 in the study group and 98 in the control group) were enrolled. The duration of phototherapy was shorter in the study group [1.9 ± 0.86 vs. 2.6 ± 0.9 days, p = 0.000)]. Feeding intolerance was significantly lower in the study group than in the control group (20.9% vs. 47.9%; p = 0.00). Conclusion: S. boulardii supplementation at a dose of 250 mg/day is safe for VLBW infants in the short term and effective in reducing the duration of phototherapy in VLBW infants. We suggest that it provides this effect by improving the feeding intolerance and suppressing the reabsorption of bilirubin into the enterohepatic circulation.
    The journal of maternal-fetal & neonatal medicine: the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians 09/2012; · 1.36 Impact Factor
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    ABSTRACT: After abdominal surgery, the formation of postoperative adhesion is a serious problem. The aim of the study is to evaluate the efficacy of 2 different pulmonary surfactants, poractant and beractant, on adhesion prevention in an experimental model. An experimental intraabdominal adhesion model was created in 18 adult female rats by cecal abrasion. The rats were randomly assigned to 3 groups. Group I received no further treatment, whereas groups II and III received intraperitoneal poractant and beractant, respectively, before closing the incision. On the 15th postoperative day, all rats underwent relaparotomy, intraabdominal adhesions were scored macroscopically according to Canbaz scoring system, and the cecum in each animal was evaluated microscopically. The median adhesion scores of group II and III rats were significantly lower when compared with group I (P = .02). Group III had a lower median adhesion score than did group II, but this did not reach significance (P > .05). These observations suggest that intraperitoneal instillation of both pulmonary surfactants is associated with lower adhesion scores, higher adhesion-free cases, and improved histologic findings.
    Journal of Pediatric Surgery 08/2012; 47(8):1560-5. · 1.38 Impact Factor
  • Gamze Demirel, Omer Erdeve, Ugur Dilmen
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    ABSTRACT: Patent ductus arteriosus is a common problem in very low birth weight infants. Prostaglandin synthesis inhibitors such as indomethacin and ibuprofen are widely used preferred medications for ductal closure but the question of which one should be preferred is controversial. There are some studies in the literature comparing their pharmacokinetics, efficacy, side effects and long-term outcomes. In this review we aimed to focus on prostaglandin synthesis inhibitors with their pharmacodynamic and pharmacokinetic in relation to oral and intravenous forms. Oral ibuprofen seems to be an effective and cheap alternative to the intravenous forms. Studies in extremely low birth weight infants that also evaluate the neurodevelopment will clarify its use.
    Current clinical pharmacology. 07/2012; 7(4):263-70.

Publication Stats

49 Citations
65.14 Total Impact Points

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Institutions

  • 2010–2013
    • Dr. Zekai Tahir Burak Women's Health Research and Education Hospital
      Engüri, Ankara, Turkey
  • 2012
    • Samsun Kadın Doğum ve Çocuk Hastalıkları Hastanesi
      Djanik, Samsun, Turkey