Athanasios Chatzimichael

The effect of obesity on pulmonary lung function of school aged children in Greece

Obesity impacts on many issues of pulmonary medicine, where it is debated if obesity is linked to asthma, atopy or altered lung function tests. Our study aimed to investigate primarily the effect of obesity on the lung function tests and secondary the possible link of obesity with atopy and asthma in a large cohort of children in Greece.

Serum Procalcitonin for Prediction of Renal Parenchymal Involvement in Children with Urinary Tract Infections: A Meta-analysis of Prospective Clinical Studies

OBJECTIVE To determine by meta-analysis whether serum procalcitonin (PCT) is a useful marker of acute renal parenchymal involvement (RPI) in children with culture-proven urinary tract infection (UTI), as diagnosed by acute-phase DMSA (Tc-99m dimercaptosuccinic acid) renal scintigraphy. STUDY DESIGN We searched PubMed and the Cochrane Central Register of Controlled Trials for prospective studies involving children with culture-proven UTIs. Additional eligibility criteria were measurement of serum PCT at presentation and performance of DMSA scintigraphy within 14 days. RESULTS Overall, 10 studies eligible for inclusion, involving a total of 627 children, were identified. Half of these studies evaluated children with a first episode of UTI; 8 involved children with febrile UTIs. Using a cutoff value of 0.5 to 0.6 ng/mL, the pooled diagnostic odds ratio of serum PCT for UTI with RPI was 14.25 (95% confidence interval, 4.70 to 43.23). High statistical between-study heterogeneity that could mainly be attributed to 2 studies was observed. The remaining 8 studies uniformly favored PCT use. CONCLUSIONS In children with culture-proven UTI, a serum PCT value >0.5 ng/mL predicts reasonably well the presence of RPI, as evidenced by DMSA scintigraphy. PCT may aid in the identification of children with UTI, necessitating more intense evaluation and management.

Asthma, lung function and sensitization in school children with a history of bronchiolitis.

Background: The purpose of the present retrospective study was to investigate the association of school‐age asthma with acute‐bronchiolitis and examine the influence of potential risk factors.

Can Procalcitonin in Cerebrospinal Fluid be a Diagnostic Tool for Meningitis

To study the levels of procalcitonin (PCT) in patients with meningitis and control group and compare them with established markers of infection—such as C‐reactive protein (CRP), high‐sensitivity CRP, and WBC—in cerebrospinal fluid (CSF) and assess the possible discriminative role of PCT in the differential diagnosis of meningitis from other noninfectious diseases.

Acute abdomen in children due to extra-abdominal causes.

Background: Acute abdominal pain in children is a common cause for referral to the emergency room and for subsequent hospitalization to pediatric medical or surgical departments. There are rare occasions when the abdominal pain is derived from extra‐abdominal organs or systems. The aim of the present study was to establish the most common extra‐abdominal causes of acute abdominal pain.

Epilepsy impact on aspects of school life of children from different cultural populations in Thrace, Greece

Epilepsy influences the school life of children. The aims of this study were to (1) assess absenteeism and participation in sports activities, (2) investigate whether parents inform school and children inform their classmates, and (3) determine which factors influence these school aspects. Children from both Christian and Muslim families were enrolled and different cultural variables were prospectively documented. A total of 62 children with epilepsy (mean age: 10.2+/-3.3 years, range: 6-18) participated in the present study. Univariate analysis and multivariate logistic regression models were used to explore potential factors that could influence school life. Absenteeism was correlated with shorter disease duration, severity, lower parental educational level, and knowledge of epilepsy. Age>12 was associated with nonparticipation in activities. Schools were informed by 84% of families, and classmates, by 22.6% of children. In conclusion, better knowledge of epilepsy resulted in fewer missed school days. The majority of children did not discuss their disease, and children from the two populations with different religions did not differ significantly in the school aspects examined. These findings suggest a probable positive effect of educational programs on the issue of daily school life.

Plasma leptin and adiponectin concentrations correlate with cardiometabolic risk and systemic inflammation in healthy, non-obese children

Abstract Background: Plasma adipocytokines are associated with metabolic profile and cardiovascular risk in obese children. Objective: To investigate the association of plasma leptin and adiponectin concentrations with cardiometabolic risk profile and systemic inflammation in non-obese children. Subjects: We studied 170 healthy, non-obese children (86 males, mean age 10±2 years). Methods: Children’s current body mass index (BMI), plasma leptin and adiponectin concentrations, lipid profile, fasting plasma glucose and high sensitivity C reactive protein (hsCRP) were measured. Results: After adjustment for age, gender and BMI, plasma leptin concentrations were positively associated with hsCRP (t=2.72, p=0.009) and fasting plasma glucose (t=4.27, p<0.0001); plasma adiponectin concentrations were negatively associated with hsCRP (t=–3.31, p=0.0016); and positively with high density lipoprotein cholesterol (t=2.32, p=0.02). Children in the highest quartile of leptin/adiponectin (L/A) ratio demonstrated significantly higher BMI, systolic blood pressure, hsCRP, triglycerides and fasting glucose and the lowest high density lipoprotein (HDL) compared to lower L/A ratio quartiles. Conclusions: Alterations in plasma leptin and adiponectin may help to reclassify non-obese children, detecting those with more unfavorable risk profiles independent of BMI status.

G894T polymorphism of eNOS gene is a predictor of response to combination of inhaled corticosteroids with long-lasting β2-agonists in asthmatic children

AIM Nitric oxide synthase enzymes have an important role in airway inflammation in asthmatic children. In the present study, the association between eNOS gene polymorphisms and response to inhaled corticosteroids (ICS) and long-lasting β(2)-agonists (LABAs) was investigated. PATIENTS & METHODS A total of 81 asthmatic children treated with ICS plus LABAs and 96 healthy controls were genotyped for eNOS G894T and -786T/C polymorphisms and their haplotypes using the PCR-RFLP method. RESULTS G894T and -786T/C polymorphisms were not associated with asthma susceptibility. Among asthmatic children, 894TT carriers had higher change in forced expiratory volume in 1 s (FEV(1)) in response to ICS plus LABAs compared with 894GG carriers (21.9 ± 3.8 vs 1.6 ± 1.9%; p < 0.001). In responders (FEV(1) change ≥7.5%), frequency of 894TT genotype was significantly higher than in nonresponders (26.2 vs 2.6%, p < 0.001). Results for the -786T/C polymorphism alone were less clear and in most cases nonsignificant. CONCLUSION The G894T polymorphism was associated with response to ICS and may serve as a useful pharmacogenetic marker of response to ICS plus LABAs in asthmatic children.

Current evidence for the management of paediatric parapneumonic effusions

Abstract Background: Parapneumonic effusions (PPE) and empyema, secondary to bacterial pneumonia, are relatively uncommon but their prevalence is increasing lately. Even if their prognosis is generally good, they may still cause significant morbidity. The traditional treatment of PPE has been intravenous antibiotics and, when necessary, chest tube drainage. Open thoracotomy with decortication has usually been applied in case of failure of the traditional approach. Lately, the use of fibrinolysis and/or video-assisted thoracoscopic surgery (VATS) are utilized in the management of PPE; however, there is still little consensus on the most effective primary treatment. Scope: In this article our goal was to summarize, based on up-to-date evidence, all the management options for PPE available to physicians and weigh the benefits and risks of the most popular ones, in an effort to figure out which one is superior as a first-line approach in children. Findings: A literature search of randomized and retrospective studies that pinpoint methods of evaluation and treatment of PPE was carried out in Medline and Scopus databases. Chest X-ray, ultrasound as well as microbiology and biochemical characteristics of the pleural fluid will facilitate decision-making. Small uncomplicated effusions resolve with antibiotics alone, larger ones require small-bore chest tube drainage and in case of complicated loculated PPE, fibrinolysis or VATS should be considered. Both methods promote faster drainage, reduce hospital stay and obviate the need for further interventions when used as first-line approach. However, primary treatment with VATS is not advised by the majority of studies as a first choice intervention, unless medical treatment has failed. Conclusion: The main steps in treatment are diagnostic thoracocentesis and imaging, small percutaneous drainage, and considering fibrinolysis in complicated PPE. In case of failure, VATS should be the surgical method to be applied.

Primary hepatic Burkitt lymphoma.

Primary hepatic lymphomas are exceedingly rare in children, with less than a dozen cases described to date. The authors present an 8.5-year-old boy with Burkitt lymphoma of the liver who had isolated multifocal liver lesions that exhibited a multilayered progressive enhancing pattern on MRI. Diagnosis was achieved after laparotomy and incisional biopsy that failed to detect disease outside the liver. The patient received short, intensive multiagent chemotherapy. He is currently well 22 months after the end of chemotherapy. This case illustrates that clinical judgment in conjunction with unusual imaging findings may contribute to the diagnosis of common tumors in rare locations.