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Manco M.,Research Unit for Multifactorial Diseases | Zupone C.L.,Bambino Gesu Childrens Hospital | Alghisi F.,Cystic Fibrosis Unit | D'Andrea M.L.,Bambino Gesu Childrens Hospital | And 2 more authors.
Journal of Cystic Fibrosis | Year: 2012

Background: Acoustic radiation force impulse (ARFI) is a novel technique for the measurement of hepatic stiffness, which could be valuable in clinical follow-up of patients affected by cystic fibrosis liver disease (CFLD). Methods: Seventy-five patients with suspected CFLD (35 males) underwent clinical and ultrasonographic evaluations, liver and pulmonary function tests, ARFI investigation, and upper gastrointestinal endoscopy. Ten ARFI measurements were taken at the deep right hepatic lobe to compute median values of Shear Wave Velocity (SWV) for each individual. Results: SWV increased progressively from 1.02. m/s (95%, Confidence Interval, CI, 0.92-1.126) in patients with no evidence of CFLD at ultrasonography (N=16), to 1.12 (95%CI 1.049-1.19) in patients with CFLD and no signs of portal hypertension (PHT, N=23), and to 1.25 (95%CI 1.14-1.358) in those with CFLD and signs of PHT (N=28). SWV was 1.63 (95%CI 1.26-1.99) in patients with oesophageal varices (N=8) (p<0.0001). Conclusions: ARFI may represent an easy, fast and non-invasive tool for the clinical follow-up of patients with cystic fibrosis associated liver disease. © 2012 European Cystic Fibrosis Society.. Source


Del Chierico F.,Parasitology Unit | Vernocchi P.,Parasitology Unit | Vernocchi P.,University of Bologna | Bonizzi L.,University of Milan | And 13 more authors.
Journal of Proteomics | Year: 2012

The establishment of gut microbiota immediately after birth is modulated by different mechanisms that can be considered specific determinants of temporal and spatial variability. Over the last few years, molecular methods have been offering a complementary support to the classical microbiology, often underpowered by its inability to provide unbiased representation of gut microbiota. The advent of high-throughput-omics-based methods has opened new avenues in the knowledge of the gut ecosystem by shedding light on its shape and modulation. Such methods may unveil taxa distribution, role and density of microbial habitants, hence highlighting individual phenotyping (physiological traits) and their relationship with gut dysbiosis, inflammation processes, metabolic disorders (pathological conditions). Synergic meta-omics or "systems biology"-based approaches may concur in providing advanced information on microbiota establishment and pathogen control. During early-life stages this massive amount of data may provide gut microbiota descriptive and functional charts which can be exploited to perform a good practice in childcare and pediatrics, thus providing nutraceutical benefits and endorsing healthy development and aging. This article is part of a Special Issue entitled: Translational Proteomics. © 2012 Elsevier B.V. Source


Shashaj B.,Research Unit for Multifactorial Diseases | Contoli B.,Research Unit for Multifactorial Diseases | Morino G.S.,Unit for Clinical Nutrition | Spreghini M.R.,Unit for Clinical Nutrition | And 4 more authors.
Acta Diabetologica | Year: 2015

Aims: Insulin resistance (IR) may develop very early in life being associated with occurrence of cardiometabolic risk factors (CMRFs). Aim of the present study was to identify in young Caucasians normative values of IR as estimated by the homeostasis model assessment (HOMA-IR) and cutoffs diagnostic of CMRFs. Methods: Anthropometrics and biochemical parameters were assessed in 2753 Caucasians (age 2–17.8 years; 1204 F). Reference ranges of HOMA-IR were defined for the whole population and for samples of normal-weight and overweight/obese individuals. The receiver operator characteristic analysis was used to find cutoffs of HOMA-IR accurately identifying individuals with any CMRF among total cholesterol and/or triglycerides higher than the 95th percentile and/or HDL cholesterol lower than the 5th for age and sex, impaired glucose tolerance, and alanine aminotransferase levels ≥40 U/l. Results: Overweight/obese individuals had higher HOMA-IR levels compared with normal-weight peers (p < 0.0001) at any age. HOMA-IR index rose progressively with age, plateaued between age 13 and 15 years and started decreasing afterward. HOMA-IR peaked at age 13 years in girls and at 15 years in boys. The 75th percentile of HOMA-IR in the whole population (3.02; AUROC = 0.73, 95 % CI = 0.70–0.75), in normal-weight (1.68; AUROC = 0.76, 95 % CI = 0.74–0.79), and obese (3.42; AUROC = 0.71, 95 % CI = 0.69–0.72) individuals identified the cutoffs best classifying individuals with any CMRF. Conclusions: Percentiles of HOMA-IR varied significantly in young Caucasians depending on sex, age, and BMI category. The 75th percentile may represent an accurate cutoff point to suspect the occurrence of one or more CMRFs among high total cholesterol and triglycerides, low HDL cholesterol, and ALT ≥ 40 UI/l. © 2015 Springer-Verlag Italia Source


Finistrella V.,Research Unit for Multifactorial Diseases | Manco M.,Research Unit for Multifactorial Diseases | Corciulo N.,Dell | Sances B.,Dell | And 6 more authors.
Journal of the American College of Nutrition | Year: 2015

Objective: to investigate the presence of eating disorders (ED) and psychopathological traits in obese preadolescents and adolescents compared to normal-weight peers. Design: Overweight/obese patients aged 11 to 14 y and normal-weight peers’ data collected by means of self-report questionnaires administered to parents and children. Setting: Clinical Nutrition Units in the Municipalities of Rome, Naples, Gallipoli and Atri, Italy. Subjects: 376 preadolescents and adolescents. Patients were 187 (93 boys, BMI=27.9±;4.1; 94 girls, BMI=28.1±4.5); normal-weight controls were 189 subjects (94 boys, BMI=19.4±1.4; 95 girls, BMI=19.5±1.5). Measures of outcome: eating disorder behaviors, psychopathological traits and symptoms estimated by means of the eating disorders scales (EDI-2) and psychopathological scales (CBCL 4–18). Results: Patients reached higher scores than controls in most of the eating disorders scales and psychopathological scales. Twenty-one (11.2%) patients were considered at risk of developing an eating disorder and 75 (40%) presented social problems. With regard to weight status, age-group and gender, main significant interaction effects were seen in social problems (F= 6.50; p<0.05) and ineffectiveness (F= 4.15; p<0.05). Conclusions: Findings from our study demonstrate that in preadolescence and adolescence, obesity is significantly associated to some traits typical of ED and to psychological problems in general. Although no inference can be made with regard to direction of causality, it is possible to conclude that overweight preadolescents and adolescents can be prone to display problematic traits more commonly associated to eating disorders and to present a high degree of mental distress. © 2015, © American College of Nutrition. Source


Purpose: Cystic-fibrosis-associated liver disease (CFLD) may lead to portal hypertension (PHT) and cirrhosis. Clinical signs and biochemistry of liver involvement are not discriminating. The aim of the study was to evaluate the performance of acoustic radiation force impulse (ARFI) with virtual tissue quantification in comparison with clinical signs, biochemistry and standard hepatic ultrasound (US) patterns. Materials and methods: Virtual Touch Tissue Quantification, an implementation of US ARFI with shear-wave velocity (SWV) measurements was used in 75 children with cystic fibrosis (CF) and suspected CFLD to quantify hepatic stiffness. In each patient, ten measurements of SWV were performed on the right hepatic lobe. Patients were also evaluated by standard diagnostic tools (standard US, liver- and lung function tests, oesophagogastroscopy). Results: Among CF patients, median SWV was significantly higher in patients with clinical, biochemical and US signs of hepatic involvement than in patients without US evidence of liver disease 1.08 m/s [(95% confidence interval (CI), 1.02-1.14]. Median SWV values in patients with portal hypertension, splenomegaly and oesophageal varices were 1.30 (95% CI, 1.17-1.43), 1.54 (95% CI, 1.32-1.75) and 1.63 (95% CI, 1.26-1.99), respectively. Differences were significant (p<0.001). Conclusions: ARFI is an innovative screening technique able to help identify CFLD in children. © 2012 Springer-Verlag Italia. Source

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