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Background The Glu167Lys (E167K) transmembrane 6 superfamily member 2 (TM6SF2) variant has been associated with liver steatosis, high alanine transaminase (ALT) levels and reduced plasma levels of liver-derived triglyceride-rich lipoproteins. Objectives The objectives of this study were to investigate in a group of obese children the association among the 167K allele of TM6SF2 gene and ALT, cholesterol and triglycerides levels, and hepatic steatosis, and to evaluate the potential interaction between this variant and the I148M patatin like phospholipase 3 gene (PNPLA3) polymorphism on liver enzymes. Methods We genotyped 1010 obese children for TM6SF2 E167K and PNPLA3 I148M polymorphisms. Anthropometrical and biochemical data were collected. Ultrasound imaging of the liver was performed. Results The 167K allele showed an association with steatosis (P < 0.0001), higher ALT levels (P < 0.001) and lower total cholesterol (P < 0.00001), low-density lipoprotein cholesterol (P < 0.0001), triglycerides (P = 0.02) and non-high-density lipoprotein cholesterol levels (P < 0.000001). The subjects homozygous for the PNPLA3 148M allele carrying the rare variant of TM6SF2 showed an odds ratio of 12.2 (confidence interval 3.8-39.6, P = 0.000001) to present hypertransaminasaemia compared with the remaining patients. Conclusion Although the TMS6SF2 E167K variant predisposes the obese children to non-alcoholic fatty liver disease, there is an association between this variant and lower levels of cardiovascular risk factors. Overall, the data suggest differential effects of TMS6SF2 E167K variant on liver and heart health.

Background: Bisphenol A (BPA) exposure has been associated with increased incidence of diabetes and obesity in adults. Objectives: To evaluate whether an association between BPA urinary levels and insulin resistance as well as adiponectin and resistin production and serum concentrations may occur in obese children. Methods: Clinical and biochemical features of 141 obese children were collected. Serum resistin and adiponectin were evaluated. Insulin resistance and urinary BPA levels were assessed. Moreover, the effect of BPA on adiponectin and resistin gene expression in adipocytes from eight normal weight prepubertal children was investigated by quantitative real-time RT-PCR (qPCR). Results: Direct association between BPA and homeostasis model assessment (r=0.23; p: 0.0069) and a strong inverse association between BPA and adiponectin have been found (r=-0.48; p

BACKGROUND: The major burden of acute gastroenteritis (AGE) in childhood is related to its high frequency and the large number of hospitalizations, medical consultations, tests and drug prescriptions. The adherence to evidence-based recommendations for AGE management in European countries is unknown. The purpose of the study was to compare hospital medical interventions for children admitted for AGE with recommendations reported in the European Societies of Pediatric Gastroenterology, Hepatology and Nutrition and Pediatric Infectious Diseases guidelines. METHODS: A multicenter prospective study was conducted in 31 Italian hospitals. Data on children were collected through an online clinical reporting form and compared with European Societies of Pediatric Gastroenterology, Hepatology and Nutrition and Pediatric Infectious Diseases guidelines for AGE. The main outcomes were the inappropriate hospital admissions and the percentage of compliance to the guidelines (full >90%, partial >80% compliance) based on the number and type of violations to evidence-based recommendations. RESULTS: Six-hundred and twelve children (53.6% male, mean age 22.8 ± 15.4 months) hospitalized for AGE were enrolled. Many hospital admissions (346/602, 57.5%) were inappropriate. Once admitted, 20.6% (126/612) of children were managed in full compliance with the guidelines and 44.7% (274/612) were managed in partial compliance. The most common violations were requests for microbiologic tests (404; 35.8%), diet changes (310; 27.6%) and the prescription of non-recommended probiotics (161; 14.2%), antibiotics (103; 9.2%) and antidiarrheal drugs (7; 0.6%). CONCLUSIONS: Inappropriate hospital admissions and medical interventions are still common in the management of children with AGE in Italy. Implementation of guidelines recommendations is needed to improve quality of care

Background: Homozygous mutations in acid-labile subunit (IGFALS) gene result in short stature, very low circulating levels of acid-labile subunit (ALS), insulin growth factor 1 (IGF1) and insulin growth factor binding protein 3 (IGFBP3) and a poor response to growth hormone (GH). The impact of IGFALS mutations heterozygosity on growth is unknown. Patient and Methods: We describe a 10-year-old girl with severe short stature (height -3.2 SDS), heterozygous for a new IGFALS mutation. Results: The girl showed low circulating IGF1, IGFBP3 and ALS levels and normal GH secretion. We found a novel heterozygous frameshift IGFALS mutation (c.1283delA, p.Gln428Argfs*14). Size-exclusion chromatography showed a reduction of the IGF1, IGFBP3 and ALS 150-kDa ternary complex (by about 55%) compared to a control. An IGF-1 generation test, with two different GH dosages, showed a good response in term of increase in IGF1 and in formation of the ternary complex at size-exclusion chromatography. Clinical response after 6 months of therapy with GH was satisfactory (height velocity increased from 3 to 8 cm/year). Conclusion: We suggest that (1) heterozygous IGFALS mutations can be responsible for a subset of patients with severe short stature (below -2.5 SDS), low IGF1 (below -2 SDS) and normal GH secretion, and (2) the identification by IGFALS molecular screening of this subset of patients could help in the administration of the appropriate therapy. Background: Homozygous mutations in acid-labile subunit (IGFALS) gene result in short stature, very low circulating levels of acid-labile subunit (ALS), insulin growth factor 1 (IGF1) and insulin growth factor binding protein 3 (IGFBP3) and a poor response to growth hormone (GH). The impact of IGFALS mutations heterozygosity on growth is unknown. Patient and Methods: We describe a 10-year-old girl with severe short stature (height -3.2 SDS), heterozygous for a new IGFALS mutation. Results: The girl showed low circulating IGF1, IGFBP3 and ALS levels and normal GH secretion. We found a novel heterozygous frameshift IGFALS mutation (c.1283delA, p.Gln428Argfs*14). Size-exclusion chromatography showed a reduction of the IGF1, IGFBP3 and ALS 150-kDa ternary complex (by about 55%) compared to a control. An IGF-1 generation test, with two different GH dosages, showed a good response in term of increase in IGF1 and in formation of the ternary complex at size-exclusion chromatography. Clinical response after 6 months of therapy with GH was satisfactory (height velocity increased from 3 to 8 cm/year). Conclusion: We suggest that (1) heterozygous IGFALS mutations can be responsible for a subset of patients with severe short stature (below -2.5 SDS), low IGF1 (below -2 SDS) and normal GH secretion, and (2) the identification by IGFALS molecular screening of this subset of patients could help in the administration of the appropriate therapy. © 2013 S. Karger AG, Basel.

Although linkage studies strongly suggest that proopiomelanocortin (POMC) alterations could play a role in the genetic predisposition to obesity, systematic POMC mutational analysis did not completely confirm this hypothesis.To verify the presence of mutations of the POMC coding region in Italian children with very early onset obesity.Eighty seven unrelated Italian obese children and adolescents were studied. Mean age at obesity onset was 4.7+/-2.5 y. The POMC gene coding region was screened using single-strand conformation polymorphism (SSCP) analysis. Bi-directional automatic sequencing of PCR products was performed for all individuals who showed an aberrant SSCP pattern.Three new mutations have been identified in the heterozygous state in three patients: (a) G3834C, resulting in the substitution of Ser with Thr at codon 7 within the POMC signal peptide; (b) C3840T, resulting in the substitution of Ser with Leu at codon 9 of the pre-proopiomelanocortin signal peptide; and (c) C7406G, producing the substitution of Arg with Gly at codon 236 within the beta-endorphin peptide. A polymorphism consisting of a 9 bp insertion, AGC AGC CGC, between position 6997 and 6998 has been found at the heterozygous state in nine patients. They showed leptin levels adjusted for BMI, gender and pubertal stage significantly higher than obese subjects homozyous for the POMC wild-type allele.Mutations in codons 7 and 9 of the signal peptide may alter the translocation of the pre-proopiomelanocortin into the endoplasmic reticulum and, therefore, can be implicated in obesity. Although further studies are required, the polymorphism between position 6997 and 6998 may represent one of the genetic variations that explain the linkage between obesity and POMC. International Journal of Obesity (2001) 25, 61-67

Blood lead levels were assayed in 261 children (133 males and 128 females) living in Campania, 137 (63 females and 74 males) in urban areas and 124 (65 females and 59 males) in rural zones, aged between 0.197 and 16.863 years. Blood lead determination was carried out by electrothermal atomic absorption spectroscopy. All children were interviewed about common risk factors for lead exposure. PbB (median +/- SD) were significantly higher in the urban than in the rural population (6.0 +/- 0.31 vs 3.75 +/- 0.25 micrograms/100 ml; p0.001). The frequency of blood lead level above 10 micrograms/100 ml was 4.21% in our tested group, i.e., significantly lower than in previous studies. A significant direct correlation between blood lead levels and age was found (r = 0.47; p0.001). In agreement with the literature on this subject, our findings show a significant reduction with time, of blood lead levels of children and adolescents in our region. Time of exposure more than total dose seems to be important for the increase of blood lead level.

Background When the permeability of the glomerular filtration barrier increases, leading to proteinuria, nephrotic syndrome (NS) occurs. First episodes or relapses of NS can be concurrent with acute gastroenteritis (AGE) infections. This condition can cause further deterioration of the hypovolemic state, as intravascular water is lost through both AGE-related vomiting/diarrhea and NS-related fluid shifting into the interstitium. In this case report, we wish to raise the issues about the difficult management of children presenting with both NS and AGE. Case Report We report two cases characterized by concurrence of NS and AGE. Despite our intervention, case #1 required dialysis, whereas in the case #2 we restored the patient's liquid homeostasis. Why Should an Emergency Physician Be Aware of This? No guidelines helping general physicians in the management of children presenting with both NS and AGE are available in the literature. However, it is common for these patients to seek the first line of treatment at emergency departments. In these patients, restoring the liquid homeostasis is a challenge, but some key points can help the physicians with first-line management: 1) carefully evaluate the signs of hypovolemia (edematous state can be misleading); 2) bear in mind that—in hypovolemic, severely hypoalbuminemic (serum albumin levelsÂ

Purpose: Recently, mutations of makorin RING-finger protein 3 (MKRN3) have been described in familial central precocious puberty. Serum levels of this protein decline before the pubertal onset in healthy girls and boys. The aim of the study is to investigate MKRN3 circulating levels in patients with central precocious puberty. Methods: We performed an observational cross-sectional study. We enrolled 17 patients with central precocious puberty aged 7 years (range: 2–8 years) and breast development onset

Background: Mutations in the imprinted gene MKRN3 have been described as a common genetic cause of idiopathic central precocious puberty (CPP), in particular in familial cases. However, the exact prevalence of mutations is unknown. Single nucleotide polymorphisms in 2 other imprinted genes, DLK1 and KCNK9, have been associated with age at menarche. We investigated the prevalence of mutations in MKRN3, DLK1, and KCNK9 genes in a cohort of girls with idiopathic CPP. Methods: MKRN3, DLK1, and KCNK9 coding regions were sequenced in 60 girls with idiopathic CPP (familial in 23 cases). Results: Three mutations, including a new one, in MKRN3 were found in 2 familial cases (c.1229G>A; p.Cys410Ter and c.477_485del; p.Pro160Cysfs*14) (8.7%) and in 1 sporadic case (c.982C>T; p.Arg328Cys) (2.8%). We did not find rare variants in DLK1 and KCNK9 genes. Conclusions: (1) The prevalence of MKRN3 mutations in our cohort was similar to that reported in the literature in sporadic cases but lower than previously described in familial ones. This could be due to different inheritance patterns of families studied; (2) we expanded the phenotype of MKRN3 defects describing 3 more patients with MKRN3 mutations; and (3) point mutations in DLK1 and KCNK9 at least do not seem to be a common cause of CPP in girls.

Aims: We aimed at evaluating a standard multiplex ligation-dependent probe amplification (MLPA) probe set for the detection of aneuploidy to diagnose Turner syndrome (TS). We first fixed an MLPA ratio cutoff able to detect all cases of TS in a pilot TS group. We then tested this value on a second group of TS patients and a short-stature population to measure specificity and sensitivity. Methods: 15 TS patients with X mosaicism or X structural abnormalities (Pilot TS Group), 45 TS karyotype-assessed patients (TS Group), and 74 prepubertal female patients with apparent idiopathic short stature (Short-Stature Group) were enrolled. All subjects underwent MLPA and karyotype analysis. In the TS and Short-Stature Groups, MLPA testing was performed in blind. Results: The choice of an MLPA threshold ratio of 0.76 for at least 1 probe allowed us to detect all TS cases, including mosaicisms. Sensitivity and specificity were 100% (CI 95%, 0.92-1) and 88.89% (CI 95%, 0.79-0.94), respectively. The positive predictive value was 88.5%, and the negative predictive value was 100%. MLPA detected the presence of Y chromosome material in 2 patients. Conclusion: MLPA is an accurate and inexpensive tool to screen for TS in girls with short stature. A customized MLPA kit may be useful for the screening of an even larger population.

OBJECTIVES Existing studies usually do not measure the free vitamin D in pediatric patients with inflammatory bowel disease (IBD) and not consider the effect of inflammation on vitamin D levels. The aim of our study was to evaluate the concentrations of vitamin D-binding protein (VDBP), total and free 25-hydroxyvitamin-D (25(OH)D), and to correlate these values with the disease activity markers. METHODS Newly diagnosed children with IBD and a group of healthy controls (HCs) were enrolled. VDBP and total and free 25(OH)D levels were measured by enzyme-linked immunosorbent assay and compared using the Student t test. In each patient with IBD, the activity scores of disease and the main inflammation markers were correlated to total and free 25(OH)D levels. C-reactive protein was also measured in the control group, and it was related to VDBP by a linear regression test for all the groups. RESULTS Fifty-one consecutive children were enrolled: IBD = 33, HC = 18. Levels of total 25(OH)D were higher in HC than in patients with IBD (P = 0.01). The free/total 25(OH)D ratio was, however, higher in patients with IBD compared to HC (P

OBJECTIVES The aims of this retrospective study were to describe ulcerative colitis (UC) phenotype at diagnosis and follow-up and to identify possible predictors of severe disease course. METHODS This was a retrospective, single-center study. We reviewed the charts of patients with UC diagnosed between 2 and 18 years at our referral center from January 2007 to January 2016. Laboratory and clinical features at diagnosis, such as disease extent, atypical phenotypes, extraintestinal manifestations, and therapies, and pattern changes during the follow-up, including relapse rate, disease extension, and the cumulative risk for colectomy were collected. RESULTS One hundred eleven patients were enrolled. Atypical phenotypes were identified at diagnosis in 55 out of 111 patients (49.5%). Extraintestinal manifestations were detected in 16 out of 111 (14.4%) at the diagnosis. During the follow-up 60 out of 111 (54%) patients needed to start azathioprine, 9 out of 111 (8.1%) patients started biologic therapy and 10 out of 111 (patients underwent surgery, resulting in a cumulative risk of 8% at 5 years and 16% at 10 years. Steroid refractoriness (hazard ratio: 13.9) and starting of biologic therapy (hazard ratio: 25.3) represented the best predictors for surgery. The cumulative probability of first relapse was 47% at 6 months and 63% at 1 year. Disease extension was reported in 21 out of 70 patients (30%). CONCLUSION Pediatric UC is associated with a severe phenotype and a high percentage of atypical features. Surgery rate seems to be decreased from early reports.

Summary Introduction Since standardization of the ICCS terminology, only two small case series of children with extraordinary daytime only urinary frequency (EDOUF) have been published. The aims of the present study were i) to describe a large cohort of children affected by EDOUF, to evaluate its rate among the main micturition pediatric disturbances, and to determine if there is different EDOUF onset among seasons; ii) to investigate possible associations with urodynamic abnormalities by non-invasive techniques; iii) to evaluate whether postponing micturition exercise (PME) can objectively verify the anamnestic data hinting at the EDOUF diagnosis; and iv) to determine the effect of postponing micturition at home. Material and methods We reviewed the records of all patients with EDOUF, nocturnal enuresis, and/or overactive bladder firstly examined from March 2012 to February 2016. We evaluated post-void residual and bladder wall thickness by urinary ultrasound and uroflowmetry and recorded the season in which the EDOUF started. Through the PME, the EDOUF diagnosis was confirmed if patients were able to postpone micturition reaching at least 80% of the expected bladder capacity without showing urinary incontinence. At home, we recommended postponing micturition for a maximum of 3 h if EDOUF affected the normal daily activities of both children and parents. We set a telephone interview for 3 months later. Results The clinical characteristics of the EDOUF population are shown in the Table. The EDOUF rate was 12.1%. The rate of EDOUF onset was significantly lower during the summer than in other seasons (p = 0.02) and the OR for onset of EDOUF in the summer – compared with the other seasons – was 0.37 (95% CI 0.18–0.74; p = 0.005). Eighty-five (80.2%) patients reported an intermittent trend of the EDOUF with variable periods of improvement and worsening. All the EDOUF patients had normal uroflowmetry, 1/106 had post-micturition bladder wall thickness >5 mm and one post-void residual. At the PME, 106 out of 106 (100%) patients with EDOUF were able to reach at least 80% of the EBC without showing urinary incontinence or urgency incontinence. After 3 months, in 98.1% of the patients the symptoms had disappeared or improved. Discussion and conclusions Childhood EDOUF is rather common and is generally associated with normal non-invasive urodynamic patterns. The PME allows verification of anamnestic data of EDOUF. The sole recommendation to postpone micturition for a maximum of 3 h or until the micturition postponement became stressful could be considered as a possible approach. Table . Clinical characteristics of the 106 patients with EDOUF. Age at EDOUF diagnosis, yr 6.8 ± 2.3 Female sex, no. (%) 53 (50) SBP, SDS 0.31 ± 0.7 DBP, SDS 0.17 ± 0.8 Age at continence, yr 2.3 ± 0.5 Nocturia, no. (%) 1 (0.9) Constipation, no. (%) 19 (17.4) Urgency, no. (%) 0 (0) Incontinence, no. (%) 0 (0) EBC >80% at PME, no. (%) 106 (100) Post-micturition bladder wall thickness >5 mm, no. (%) 1 (0.9) Presence of post-void residual, no. (%) 1 (0.9) a Maximum flow, mL/s 19.34 ± 10.2 Normal uroflowmetry, no. (%) 106 (100) Normal urinalysis, no. (%) 106 (100) Previous UTIs, % 2 (1.9) b Daily micturitions, no. 20.1 ± 7.2 Mean daily voided volumes (% of the EBC) 28.7 ± 9.2 Data are given as means ± SDS, unless stated otherwise. DBP, diastolic blood pressure; EBC, expected bladder capacity; EDOUF, extraordinary daytime only urinary frequency; PME, postponing micturition exercise; SBP, systolic blood pressure; SDS, standard deviation score; UTI, urinary tract infection. a Only one patient presented a post-void residual of 30 mL. b All the UTIs were not febrile.

Purpose: We evaluated the clinical course of patients prenatally diagnosed and enrolled early with congenital solitary functioning kidney, and identified the risk factors for renal injury. Materials and Methods: We retrospectively evaluated 322 patients with congenital solitary functioning kidney according to the inclusion criteria of 1) prenatal diagnosis of solitary kidney; 2) first evaluation at 1 to 3 months of life with confirmation of congenital solitary functioning kidney, and evaluation of possible associated congenital anomalies of the kidney and urinary tract by abdominal ultrasound, renal scintigraphy and cystography; and 3) absence of any condition potentially affecting renal function in the neonatal period as well as absence of renal injury at enrollment (1 to 3 months of life) confirmed by a normal estimated glomerular filtration rate, lack of proteinuria and hypertension. Followup of 306 patients was evaluated. Results: Median followup was 7.2 years (range 1 to 23) and 1 or more signs of renal injury were found in 12 of 306 patients (3.9%). Considering the entire population the cumulative proportion of patients free from renal injury at 17 years old was 93.7%, vs 81.3% and 95.9% for subjects with and those without congenital anomalies of the kidney and urinary tract of congenital solitary functioning kidney (p

Background:Increased thyroid stimulating hormone (TSH) serum concentration can be a marker of subclinical hypothyroidism (SCH) or transient hyperthyrotropinemia. The aim of our study was to evaluate whether high serum TSH concentrations in allergic children could represent true SCH or isolated and transient hyperthyrotropinemia.Methods:We enrolled 620 allergic children (1.11–12.8 years) consecutively attending to our department. They were classified as atopics and non-atopics on the basis of the atopy work-up and, at baseline, they were investigated for thyroid function and low-grade inflammation state. Further, TSH was evaluated after 6 (T1) and 12 (T2) months.Results:Both atopics and non-atopics showed higher SCH prevalence compared to controls (p=0.0055 and p=0.02, respectively), and a significant association between atopy and SCH (OR 10.11, 95% CI 1.36–75.12) was found. Both at T1 and T2, atopics had a significant risk of developing severe SCH compared to non-atopics (RR 1.8, 95% CI 1.39–2.34 and 1.61, 95% CI 1.21–2.14; respectively).Conclusions:Our data may suggest that hyperthyrotropinemia in atopic children could be used as a marker of true SCH.

Adiponectin (Acrp30), its high molecular weight (HMW) oligomers, and Irisin are molecules involved in several metabolic processes. To investigate if these cytokines could represent new metabolic markers, we evaluated the expression of Acrp30 and Irisin in serum of obese children from South Italy affected by different degrees of insulin resistance (IR). The anthropometric and metabolic features were evaluated in 27 obese children versus 13 age-matched controls. The expression of Acrp30, its pattern and Irisin were investigated by ELISA, western blotting and fast protein liquid chromatography. The HOMA index was significantly higher in obese children versus controls, and metabolic syndrome was more prevalent in obese children with elevated IR versus those with normal HOMA (38% vs 16%). Total Acrp30 and HMW oligomers were significantly lower in obese than in control children, and the difference was more pronounced in children with HOMA >3.4. In control and obese children, total Acrp30 and HMW oligomers were inversely related to HOMA (r-0.38, p 0.02; r-0.35, p 0.03). Irisin was significantly higher in obese than in control children, and was inversely correlated with Acrp30 and HMW (r-0.32, p 0.04; r-0.39, p 0.01). The inverse correlation of Acpr30 and HMW oligomers with HOMA indicates that Acpr30 is directly involved in IR status. Moreover, the inverse correlation between Irisin and Acrp30 and, more significantly, between Irisin and HMW oligomers suggests that the two cytokines are closely connected. The use of Acrp30, HMW oligomers and Irisin as predictive factors of IR in obese children remains to be further elucidated.

Objective: To verify in obese children whether or not the presence of i) high waist-to-height ratio (WHtR), ii) family history for type 2 diabetes (T2D) and iii) acanthosis nigricans (AN), singularly or together, might predict the occurrence of metabolic syndrome or prediabetes. Methods. 1,080 Italian obese children (567 females) were enrolled. Blood pressure, fasting plasma glucose, insulin, and lipids were measured, and oral glucose tolerance test (OGTT) was performed. The WHtR was calculated, family history for T2D was assessed, and the presence of AN was noticed. The odds ratios for showing metabolic syndrome and/or prediabetes according to the presence of these features were calculated. Results: The prevalence of metabolic syndrome was 29.2%. AN (OR1.81; p = 0.002) and WHtR higher than 0.60 (OR 2.24; p < 0.0001) were the clinical signs linked to higher risk for showing metabolic syndrome, and the odds raised significantly when these elements occurred simultaneously (OR 3.34; p < 0.0001). T2D family history (OR 2.36; p = 0.01) and WHtR higher than 0.60 (OR 2.32; p = 0.009) were the two features associated with increased odds of showing prediabetes. Conclusions: Three simple actions, i.e., looking at the patient, asking about T2D family history, and measuring WHtR, may represent a powerful tool in the hands of pediatricians to identify obese children with high cardiovascular and metabolic risk.

Context: Obesity is associated with a low-grade inflammatory state and adipocyte (ADP) hyperplasia/hypertrophy. Obesity inhibits the “browning” of white adipose tissue. Cannabinoid receptor 2 (CB2) agonists reduce food intake and induce antiobesity effect in mice. A common missense CB2 variant, Q63R, causes CB2-reduced function. Objective: To evaluate the influence of CB2 receptor on the modulation of childhood obesity and of ADP activity and morphology. Design: CB2-Q63R variant was analyzed in obese Italian children. The effects of an inflammatory stimulus and those of drugs selectively acting on CB2 were investigated on in vitro ADPs obtained from mesenchymal stem cells of adult healthy donors or from sc adipose biopsies of adult nonobese and obese subjects. Setting: Department of Women, Child and General and Specialist Surgery of the Second University of Naples. Patients or Other Participants: A total of 501 obese Italian children (age 11 ± 2.75). Twelve healthy bone marrow donors (age 36.5 ± 15); and 17 subjects, 7 lean (age 42 ± 10) and 10 obese (age 37.8 ± 12) underwent sc adipose tissue biopsies. Main Outcome Measures: Effects of CB2 stimulation on adipokine, perilipin, and uncoupling protein-1 expression. Results: The less-functional CB2-R63 variant was significantly associated with a high z-score body mass index. CB2 blockade with AM630 reverse agonist increased inflammatory adipokine release and fat storage and reduced browning. CB2 stimulation with JWH-133 agonist reversed all of the obesity-related effects. Conclusion: CB2 receptor is a novel pharmacological target that should be considered for obesity.

BACKGROUND The N-acetyltransferase 2 ( NAT2 ) A803G polymorphism has been associated with decreased insulin sensitivity in a large adult population with the A allele associated with insulin-resistance-related traits. OBJECTIVE Evaluate the association of this polymorphism with anthropometric and metabolic parameters in obese children and adolescents. SUBJECTS A total of 748 obese children and adolescents were enrolled. METHODS Anthropometric and laboratory data were collected. During oral glucose tolerance test, the presence of a possible exaggerated plasma glucose excursion at 1 h (1HPG) or impaired glucose tolerance (IGT) was considered. Homeostasis model assessment, oral disposition index (oDI) and insulinogenic index (IDI) were calculated. Patients were genotyped for the NAT2 A803G polymorphism. RESULTS The prevalence of both IGT and elevated-1HPG was higher in children carrying the A803 allele (P = .02 and P = .03). Moreover, this allele was associated with both oDI and IGI reduction (P = .01). No differences among the NAT2 A803G genotypes for the other parameters were shown. Children homozygous for the A allele presented an odds ratio (OR), to show IGT of 4.9 (P = .01). Children both homozygous and heterozygous for the A allele had higher risk to show elevated-1HPG (OR of 2.7, P = .005; and OR = 2.3, P = .005) compared with patients homozygous for the NAT2 803G allele. CONCLUSIONS NAT2 A803 allele seems to play a role in worsening the destiny of obese children carrying it, predisposing them to elevated-1HPG and IGT and then to a possible future type 2 diabetes mellitus throughout an impairment of pancreatic β-cellular insulin secretion as suggested by oDI and IGI reduction.

The objective of the study is to verify effects of nebulized 3% saline hypertonic solution (HS) in comparison to normal saline (NS) in addition to epinephrine in hospitalized children with bronchiolitis. Infants were randomly assigned either to receive every 6 hours nebulized NS (group I) or 3% HS (group II) in addition to epinephrine (1.5 mg) and to conventional treatment. The main endpoints of this study were the length of stay (LOS) in hospital and the clinical response score (CSS). Patients presented a significant decrease in CSS from the first through the third day of treatment, present in the first group but even more evident in the second group (p=0.0001). Comparison between group I and II data shows significant decrease in CSS in the 3% HS-treated patients both at the second (p

Allergic rhinitis is characterized by local inflammation. Nasal lavage may be a useful treatment, however, there are few studies on this topic. This study aims to evaluate the effects of Ischia thermal water nasal irrigation on allergic rhinitis symptoms and airway inflammation during the period of natural exposure to Parietaria pollen in children with allergic rhinitis and intermittent asthma. Forty allergic children were randomly divided into two groups: the first group (Group 1) practiced crenotherapy with thermal water aerosol for 15 days per month, for three consecutive months, the control group (Group 2) was treated with 0.9% NaCl (isotonic) solution. In addition, all children were treated with cetirizine (0.5 gtt./kg/day once daily). Nasal symptom assessment, including Total Symptom Score (TSS), spirometry, and exhaled nitric oxide (FeNO) were considered before the treatment (T0), at the end of the treatment (T1) and again 2 weeks after the end of the treatment (T2). The study was registered in the Clinical Trials.gov (NCT01326247). Thermal water significantly reduced both TSS and FeNO levels and there was a significant relationship between reduction of nasal symptoms and FeNO values at the end of treatment with thermal water. In conclusion, this study shows that nasal crenotherapy with the hyper-mineral chloride-sodium water of Ischia was effective in children with seasonal allergic rhinitis based on the sensitivity to Parietaria. These results demonstrate that this natural treatment may be effective in a common and debilitating disease such as the allergic rhinitis.

Contains fulltext : 80562.pdf (Publisher’s version ) (Open Access) CONTEXT: Obesity and iron deficiency are two of the most common nutritional disorders worldwide. Several studies found higher rates of iron deficiency in obese than in normal-weight children. Hepcidin represents the main inhibitor of intestinal iron absorption, and its expression is increased in adipose tissue of obese patients. Leptin is able, in vitro, to raise hepcidin expression. OBJECTIVES: Aims of this work were 1) to assess the association between poor iron status and obesity, 2) to investigate whether iron homeostasis of obese children may be modulated by serum hepcidin variations, and 3) to assess the potential correlation between leptin and serum hepcidin variations. METHODS: Iron status and absorption as well as hepcidin, leptin, and IL-6 levels were studied in 60 obese children and in 50 controls. RESULTS: Obese children showed lower iron and transferrin saturation (both P < 0.05) and higher hepcidin levels (P = 0.004) compared with controls. A direct correlation between hepcidin and obesity degree (P = 0.0015), and inverse correlations between hepcidin and iron (P = 0.04), hepcidin and transferrin saturation (P = 0.005), and hepcidin and iron absorption (P = 0.003) were observed. A correlation between leptin and hepcidin (P = 0.006) has been found. The correlation remained significant when adjusted for body mass index, sex, pubertal stage, and IL-6 values. CONCLUSIONS: We propose that in obese patients, increased hepcidin production, at least partly leptin mediated, represents the missing link between obesity and disrupted iron metabolism.

Turner Syndrome (TS) is a developmental disorder caused by partial or complete loss of one sex chromosome. Bicuspid aortic valve and other left-sided congenital heart lesions (LSL), including thoracic aortic aneurysms and acute aortic dissections, are 30–50 times more frequent in TS than in the general population. In 454 TS subjects, we found that LSL are significantly associated with reduced dosage of Xp genes and increased dosage of Xq genes. We also showed that genome-wide copy number variation is increased in TS and identify a common copy number variant (CNV) in chromosome 12p13.31 that is associated with LSL with an odds ratio of 3.7. This CNV contains three protein-coding genes (SLC2A3, SLC2A14, and NANOGP1) and was previously implicated in congenital heart defects in the 22q11 deletion syndrome. In addition, we identified a subset of rare and recurrent CNVs that are also enriched in non-syndromic BAV cases. These observations support our hypothesis that X chromosome and autosomal variants affecting cardiac developmental genes may interact to cause the increased prevalence of LSL in TS. © 2016 Wiley Periodicals, Inc.

Background: The central melanocortin system is critical for the long-term regulation of energy homeostasis. Melanocortin-3 receptor (MC3R) knock-out mice, despite being hypophagic, have increased fat mass and higher feed efficiency than do their wild-type littermates. Objective: The aim was to evaluate whether, in childhood obesity, MC3Rvariants are associated with changes in fatness reduction as a consequence of a weight-reduction program. Design: Molecular screening of the MC3R coding region in 184 obese children, 77 girls and 107 boys [x (SEM) body mass index (BMI; in kg/m 2 ) z score: 3.3 2.3; age 9.2 2 y], was performed. BMI was evaluated at baseline and after 6 and 12 mo of the weight loss program. Results: No new mutations were found. Two previously described polymorphisms, C17A (Thr6Lys) and G241A (Val81Ile), were observed in 20 patients in almost complete linkage disequilibrium. No significant differences in BMI z scores were observed at baseline of theweight-lossprogrambetweenthegenotypes;however,atfollowup, heterozygotes showed a significantly higher BMI z score (P 0.03). When the patients were divided according to the amount of weight lost, a higher prevalence of heterozygotes was observed among subjects who lowered their BMI z score 1.5 (P 0.03). Conclusion: These results suggest a gene-diet interaction between theMC3RC17A and G241A variants and a weight loss program for the ability to lose weight in childhood obesity. Am J Clin Nutr 2007;85:950–3.

Background Central precocious puberty (CPP) is often familial but its genetic cause is largely unknown. Very recently, the makorin RING finger protein 3 (MKRN3) gene, located on chromosome 15 in the Prader-Willi syndrome (PWS)-associated region (15q11-q13), has been found mutated in 5 families with familial precocious puberty. The MKRN3 is a maternal imprinted gene and the phenotype is expressed only when the MKRN3 mutations are localized on the allele inherited from the father. The function of this gene is not completely known and the phenotype caused by its defect is not yet fully elucidated. We report a new MKRN3 mutation (Pro160Cysfs*14) causing familial CPP. Case presentation The index case is a 7 years old girl showing Tanner stage 3 and pubic hair stage 1. Her bone age evaluated by TW2 method was 10.3 years. Her hormonal data confirmed the diagnosis of central precocious puberty. Familial medical history revealed precocious puberty in a cousin on paternal side. Paternal grandmother had menarche at the age of 9 years and 6 months and premature menopause when she was 36 years old. Genetic analysis revealed a new mutation (c477_485del; Pro160Cysfs*14) in the maternally imprinted MKRN3. Puberty onset was at 5 years in the other affected female family member. Precocious puberty was well controlled by pharmacological therapy. Conclusion We expand the number of the MKRN3 mutations associated with CPP and highlight the importance of an accurate family medical history to disclose the peculiar pattern of inheritance of this gene.

Objective: The insulin variable number of tandem repeats (VNTR) polymorphism located in the insulin gene promoter (INS VNTR) has been associated with insulin levels in obese children. Hyperinsulinemia is a pivotal factor in the development of metabolic syndrome, an emerging complication in childhood obesity. With the present study, we aimed to test the associations between INS VNTR and the metabolic syndrome in juvenile-onset obesity. Subjects and Methods: We screened for the INS VNTR in 320 obese children (152 girls; mean age, 11.2 ± 2.3 yr; mean z-score body mass index, 3.6 ± 1.1). All of them underwent a standard oral glucose tolerance test; baseline measurements included blood pressure and plasma lipid and fasting insulin levels. By using the data derived from the oral glucose tolerance test, the whole-body insulin sensitivity and the insulinogenic index were calculated. Results: The prevalence of metabolic syndrome reached 39%. No differences in INS VNTR genotype distribution were observed between obese subjects and 200 lean, age- and sex-matched children (P = 0.7). Among obese subjects, the prevalence of the metabolic syndrome was significantly higher in subjects with the I/I genotype (P = 0.006); the risk for developing the metabolic syndrome was significantly higher in subjects carrying the I/I genotype (odds ratio, 2.5; 95% confidence interval, 1.5–3.9). Obese subjects homozygous for the class I allele showed higher insulin levels and insulinogenic index but lower whole-body insulin sensitivity. Conclusions: We conclude that the I variant of the insulin promoter, when expressed in homozygotes, can predispose obese children to develop the metabolic syndrome.

Summary: Gyrate atrophy of the choroid and retina is an autosomal recessive chorioretinal dystrophy which leads to a slowly progressive loss of vision. The primary defect is due to a deficiency of the enzyme ornithine δ-aminotransferase, which is responsible for markedly elevated levels of ornithine in plasma and other body fluids. Although several therapeutic regimens have been proposed, the reduction in ornithine accumulation obtained by reducing the intake of its precursor arginine (semisynthetic low-arginine diet) is the one most practised. In this clinical and molecular study we report a patient with hyperornithinaemia and gyrate atrophy of the choroid and retina who had been diagnosed when she was 3 years 9 months old. She also presented mild mental retardation, delayed language development and speech defects. The patient has recently been found to be homozygous for the new Gly91Arg amino acid substitution of the enzyme ornithine δ-aminotransferase. This mutation lies in a region of the mature protein that is considered crucial for the mitochondrial targeting activity. In this patient, a 28-year treatment with a completely natural low-protein diet (0.8 g/kg per day of natural protein) has been able to significantly reduce ornithine plasma levels, and to greatly delay the natural progression of the chorioretinal changes. This study suggests that, in the long-term treatment of gyrate atrophy, the efficacy in slowing the progression of chorioretinal changes and the palatability of a completely natural low-protein diet make this treatment a potentially viable alternative in patients refusing the semisynthetic diet.

Objectives Studies of adults and children with celiac disease have reported an increased risk of overweight during gluten-free diet (GFD). The fat mass and obesity-associated gene (FTO) variant rs9939609 has been associated with increased risk of developing obesity in children and adults. Methods In our study, we analyzed the effect of this variant on weight gain in a cohort of 280 children with celiac disease on GFD. Results We found that after a mean follow-up time of 3.0 years on GFD, FTO polymorphism influenced significantly the mean change in body mass index z score (P = 0.01). Conclusions We conclude that the FTO gene contributes to determine weight changes in children with celiac disease on GFD.

Background The prevalence of obesity is increasing among children/adolescents. Subtle cardiovascular abnormalities, responsible for a higher mortality later in life, have been reported in obese children/adolescents. The aims of the study were to evaluate cardiovascular autonomic regulation, by means of spectrum analysis of R-R interval variability, and myocardial function, by means of standard and tissue Doppler echocardiography, in a group of non-hypertensive asymptomatic obese children and adolescents; furthermore, the influence of insulin resistance was tested. Subjects and Methods R-R interval variability was analyzed during both the 70° head-up tilt and 24-hour electrocardiographic holter monitoring. Spectrum analysis of R-R interval variability provided the indices of sympathetic (low frequency [LFRR]) and vagal (high frequency [HFRR]) modulation of the sinoatrial node. Homeostasis model assessment of insulin resistance (HOMA-IR) was used to classify obese children/adolescents (n=72) as insulin resistant (n=37) and non-insulin resistant (n=35). Results In obese subjects: a) left ventricular mass was significantly (p

Background The ovary is an important site where gene variants modulate pubertal timing. The cannabinoid receptor 2 (CB2) is expressed in the ovary, plays a role in folliculogenesis and ovulation, and can be modulated by estrogens. Obesity is strictly associated with early menarche and is characterized by sex hormone and endocannabinoid derangement. Aim In this study, we investigated the role of the CB2 receptor in determining the age at menarche in obese girls. Methods We studied a cohort of 240 obese girls (age 11.9±3 years; BMI z-score 2.8±0.8). The age at menarche (if it had already occurred) was recorded at the time of the visit or via phonecall. The CNR2 rs35761398 polymorphism, which leads to the CB2 Q63R variant, was detected by the TaqMan assay. Results In total, 105 patients were homozygous for the R63-coding allele (RR), 113 were QR and 22 were QQ. Variance analysis revealed a significantly earlier age of menarche in subjects carrying the Q63 allele, which was also found after adjusting for BMI z-score (11±1.2 vs. 11.6±1.2 years, p = 0.0003). Logistic regression analysis demonstrated that patients homozygous for the Q allele had a 2.2-fold higher risk (odds ratio = 2.2; CI1.1-3.4; p = 0.02) of presenting with an early menarche (age at menarche

Background/Aims: We report data from the EU Increlex® Growth Forum Database (IGFD) Registry, an ongoing, open-label, observational study monitoring clinical practice use of recombinant human insulin-like growth factor-1 (rhIGF-1) therapy in children. Methods: Safety and effectiveness data on rhIGF-1 treatment of 195 enrolled children with growth failure were collected from December 2008 to September 2013. Results: Mean ± SD (95% CI) height velocity during first year of rhIGF-1 treatment was 6.9 ± 2.2 cm/year (6.5; 7.2) (n = 144); in prepubertal patients naïve to treatment, this was 7.3 ± 2.0 cm/year (6.8; 7.7) (n = 81). Female sex, younger age at start of rhIGF-1 therapy, and lower baseline height SDS predicted first-year change in height SDS. The most frequent targeted treatment-emergent adverse events (% patients) were hypoglycemia (17.6%, predictors: young age, diagnosis of Laron syndrome, but not rhIGF-1 dose), lipohypertrophy (10.6%), tonsillar hypertrophy (7.4%), injection site reactions (6.4%), and headache (5.9%). Sixty-one serious adverse events (37 related to rhIGF-1 therapy) were reported in 31 patients (16.5%). Conclusion: Safety and effectiveness data on use of rhIGF-1 in a ‘real-world' setting were similar to those from controlled randomized trials. Severe growth phenotype and early start of rhIGF-1 improved height response and predicted risk of hypoglycemia.

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Objectives: To investigate whether the functional variant Q63R of the cannabinoid 2 (CB2) receptor is associated with susceptibility to oligo/poly-articular juvenile idiopathic arthritis (JIA) and with its clinical features. Method: A total of 171 Italian children with oligoarticular/rheumatoid factor negative poly-articular JIA and 600 healthy controls were enrolled in the study and genotyped. Results: A significant difference in genotype distribution of the CB2 Q63R variant (CNR2 rs35761398) between oligo/poly-articular JIA patients and controls was found (p = 0.001). The R63 variant was associated with increased rates of relapse (p = 0.0001). Conclusions: This study indicates that the CB2 receptor contributes to susceptibility to oligo/polyarticular JIA and to the severity of its clinical course.

Obesity in children/adolescents has been associated with subtle cardiac abnormalities, including myocardial dysfunction and cardiac autonomic dysregulation at rest, both likely responsible for a higher mortality in adulthood. Food intake induces remarkable adjustments of cardiovascular autonomic activity in healthy subjects.The objective of the study was to evaluate in obese children/adolescents meal-induced cardiac autonomic response and the role played by insulin resistance.Sixty-eight obese and 30 matched normal-weight children/adolescents underwent blood sampling and cardiovascular autonomic analysis while recumbent and 20 minutes after a mixed meal ingestion. Spectrum analysis of the R-R interval and systolic blood pressure (SBP) variability provided the indices of sympathetic [low frequency (LFRR)] and vagal [high frequency (HFRR)] modulation of the sinoatrial node and the low frequency component of SBP. The homeostasis model assessment of insulin resistance served to separate insulin resistant (n = 35) from non insulin resistant (n = 33) obese children/adolescents.At baseline, C-reactive protein, the LFRR to HFRR ratio, SBP, and low frequency oscillatory component of SBP variability in obese children/adolescents were significantly (P.05) greater than in referent subjects, whereas high-density lipoprotein cholesterol and HFRR were lower; meal-induced increase in the LFRR to HFRR ratio was significantly less than in controls and exaggeratedly scanty (or opposite) among insulin resistant subjects. The homeostasis model assessment of insulin resistance index strongly and inversely correlated (r = -0.871; P.001) with meal-induced changes in the LFRR to HFRR ratio among obese subjects.Autonomic modulation of the heart was impaired after eating in obese children/adolescents. This abnormality was exaggerated among insulin resistant subjects and strongly correlated with the degree of insulin resistance.

OBJECTIVE: Allergic rhinitis (AR) is caused by an IgE-mediated inflammatory reaction consequent to the exposure to causal allergen. Resveratrol is a natural non-flavonoid polyphenol, exerting anti-inflammatory activity; β-glucan is a polysaccharide with immuno-modulatory properties. Thus, this study aimed to investigate whether these combined compounds are able of relieving nasal symptoms in children with AR due to pollen allergy. RESEARCH DESIGN AND METHODS: The present study was conducted as placebo-controlled, double-blinded, and randomized. Globally, 68 children (36 males; mean age 7.9 years) were treated with resveratrol plus β-glucan or placebo (the diluent of active drug) two sprays (100 µL/spray) in each nostril three times/day for 2 months. Nasal symptoms, including itching, sneezing, rhinorrhea, and obstruction, were assessed at baseline and after treatment. Use of rescue medication, such as cetirizine syrup, was also evaluated. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov ID NCT02130440. RESULTS: Children treated with active drug achieved a significant reduction in all nasal symptoms: itching (p = 0.0001), sneezing (p = 0.0009), rhinorrhea (p = 0.009), and obstruction (0.002) as well as antihistamine use (p = 0.003). Placebo did not affect nasal complaints and cetirizine use. The intergroup analysis showed that active treatment was significantly superior to placebo about reduction of AR symptoms and rescue medication use. CONCLUSIONS: The present preliminary study firstly showed that intranasal resveratrol plus carboxymethyl-β-glucan is capable of significantly improving nasal symptoms in children with pollen-induced AR.

To evaluate normoglycemic overweight/obese (Ow/Ob) children whose post-load plasma glucose (2hPG) cut-point may be significantly associated with cardiometabolic risk factors (CMRFs) and whether this cut-point predicts preclinical signs of organ damage.One thousand seven hundred and thrity four normoglycemic Ow/Ob children were stratified into quintiles of 2hPG, the sixth group was constituted by 101 children with impaired glucose tolerance (IGT).Moving from the lower quintiles of 2hPG to IGT, the groups differed for Prepubertal stage, BMI, fasting PG, insulin levels, blood pressure, and lipids. To evaluate the best cut-off of 2hPG related to CMRFs, the area under the receiver operating characteristic curve and the Youden's index was calculated. Insulin resistance, high blood pressure, and high triglyceride/HDL-C ratio were associated with a 2hPG cut-off of 110 mg/dl. Children with 2hPG ≥110 mg/dl showed 1.3-3.2 fold higher risk to have high levels of ALT (as surrogate of nonalcoholic fatty liver disease) or increased carotid intima-media thickness.This study, performed in a large cohort of Ow/Ob children, shows that an atherogenic risk profile and preclinical signs of organ damage are associated with post-challenge elevations in plasma glucose still considered in the high normal range.

Background Rubinstein-Taybi syndrome (RTS) is a rare autosomal dominant disorder (prevalence 1:125,000) characterised by broad thumbs and halluces, facial dysmorphism, psychomotor development delay, skeletal defects, abnormalities in the posterior fossa and short stature. The known genetic causes are point mutations or deletions of the cAMP-response element binding protein-BP (CREBBP) (50-60% of the cases) and of the homologous gene E1A-binding protein (EP300) (5%). Case presentation We describe, for the first time in literature, a RTS Caucasian girl, 14-year-old, with growth hormone (GH) deficiency, pituitary hypoplasia, Arnold Chiari malformation type 1, double syringomyelic cavity and a novel CREBBP mutation (c.3546insCC). Conclusion We hypothesize that CREBBP mutation we have identified in this patient could be responsible also for RTS atypical features as GH deficiency and pituitary hypoplasia.

Type 1 diabetes mellitus may be associated with many autoimmune diseases with the common autoimmune pathogenesis. We describe the case of a girl suffering from Type 1 diabetes mellitus and autoimmune Hashimoto's thyroiditis since the childhood and, due to the onset of Juvenile Idiopathic Arthritis during adolescence, for three years practiced therapy with an anti-TNF drug, etanercept . Currently her inflammatory markers are normal, arthritis is inactive and diabetes is well controlled. During the treatment with anti-TNF drug we observed a significative reduction of insulin dose, probably due to an increased tissue sensitivity secondary to the suppression of the activity of TNF-alpha. Several clinical trials that have evaluated the effect of immunomodulatory agents in diabetic patients, especially in those with recent onset of disease, were already performed but further studies of longer duration on a larger population are needed to assess the role of biologic drugs and immunotherapy in this group of patients.

Several patients with partial trisomy 6p resulting from parental balanced translocations or from a de novo duplication or insertion have already been described. Here, we report on the first case of familial pure trisomy 6p as a result of interstitial tandem duplication. The patient, an 11-year-old female, presented with mild dysmorphic features, moderate intellectual disability with behavioral disturbances, immunodeficiency, and epilepsy. Conventional cytogenetic analysis showed a duplication of the 6p region in the patient and in her mother presenting with a partially overlapping phenotype. The rearrangement was confirmed and defined by molecular cytogenetic analysis, including FISH and array CGH analysis showing a gain of ~13.8 Mb from 6p12.3 to 6p21.31. The phenotype of a pure partial trisomy 6p is extremely heterogeneous depending on the gene contents of the duplicated region. The clinical features of our patients have been compared with overlapping cases from the literature.

Over the last decade, there has been a growing interest in the use of probiotics for allergic diseases. In the last years, some studies showed a significant improvement for atopic eczema by the administration of probiotics during pregnancy and postnatally. About food allergy, probiotics administration seems to be effective in the management of food allergy symptoms but has no effect on the prevention of sensitization. In the international literature, there are few studies that evaluated the probiotic effect on allergic rhinitis, and authors reported that probiotics might have a beneficial effect in AR by reducing symptom severity and medication use. Another major potential benefit of probiotics has been suggested in patients with asthma. On this topic, several studies have been carried out using different probiotics and the results have not been univocal. Indeed, probiotics seems to be able to offer protection about common cold and respiratory infections in healthy and hospitalized children.

Few data are available on cardiac morphology and function in children with heterozygous familial hypercholesterolemia (FH). Such patients represent a unique clinical model to assess the effect of pure hypercholesterolemia on cardiac morphology and function, excluding the effect of comorbidities. Speckle-tracking echocardiography, a relatively new echocardiographic modality, allows the assessment of myocardial deformation properties. The aim of this study was to define in children with FH the preclinical effects of isolated hypercholesterolemia on the cardiovascular system by examining left ventricular (LV) function using speckle-tracking echocardiography.Ninety children (45 with FH and 45 controls; mean age, 11 ± 3 years) were prospectively studied.Children with FH showed thicker LV walls and significantly higher LV mass indexed for height(2.7) (P = .0008) and for body surface area (P.0001). LV ejection fractions were similar in both groups. Assessment of diastolic function demonstrated longer deceleration times (P.0001), reduced early diastolic mitral annular velocities (P.0001), and higher transmitral early/early diastolic mitral annular velocity ratios (P = .0003) in children with FH. Longitudinal and circumferential myocardial deformation of the left ventricle were significantly reduced (P.0001) whereas radial deformation was increased in children with FH (P = .04) compared with controls.This study demonstrates that hypercholesterolemia is associated with significant LV morphologic and functional alterations during childhood. The findings also suggest that reductions in longitudinal and circumferential deformation are compensated for by increasing radial strain in children with FH with normal LV ejection fractions. This study raises the questions of the clinical importance of these findings and the opportunity for cholesterol-lowering therapy. The potential benefits and risks of such treatment at a young age need to be addressed in larger long-term studies.

A potential role of Helicobater Pylori (HP) infection in several extra-intestinal pathologies has been recently suggested. The aim of our study was to assess the role of serology positive for HP in atopic and non atopic infants and children affected by atopic dermatitis, urticaria, rhinitis and asthma. We included 615 children affected by atopic diseases. According to prick test positivity and age, we divided the patients into two groups: atopic or non-atopic patients and infants (0-2 years) or children (2-12 years). The serum levels of antibodies for H. pylori immunoglobulin G were measured by using an ELISA test. We found a not significant difference between group 1 and group 2 about atopy. There was a significant higher frequency of HP positive serology in older children. As for infants, a higher significant prevalence of HP positive serology was found in non-atopic patients. HP positive serology was significantly higher only in non-atopic infants affected by atopic dermatitis and urticaria than in atopic. In group 2, non atopic children shown a significant increase in the prevalence of HP serum positivity than atopic children. As for asthma, there was an higher prevalence of HP serology positive in non atopic asthmatic children group than in atopic asthmatics. On the contrary, the prevalence of positive HP serology was not significantly different between atopic and non atopic children affected by dermatitis, urticaria, and rhinitis. The present data confirm an inverse association between HP positive serology and atopy in both groups. However, the higher prevalence of positive HP serology was observed in non atopic asthmatics children than in atopic asthmatics. We could speculate that HP infection can favour non-atopic asthma onset.

Recently, there has been considerable interest in the relationship between allergic and autoimmune diseases. We evaluated the prevalence of thyroid autoimmunity in 566 children affected by atopic dermatitis (AD), urticaria, rhinitis, chronic cough, and asthma. Our results suggest that allergy and autoimmunity can be two potential outcomes of dysregulated immunity. It is tempting to speculate that NK Th2 cells can favour asthma onset and at the same time improve thyroid autoimmunity.

Celiac disease (CD) is a chronic inflammatory disease of the small bowel that occurs with the ingestion of gluten, found in several grains products. Although HLA-DQ2 variant is required for the gluten-derived peptide gliadin presentation by antigen-presenting cells to T-cells, non-HLA genetic factors account for the majority of heritable risk. Several genome-wide association studies have identified susceptibility loci for CD on chromosome 1. Cells of the immune system express the Cannabinoid Receptor type 2 (CB2), a plasma-membrane receptor activated by both endogenous and exogenous cannabinoids. Consistent data evidence that CB2 is linked to a variety of immune functional events and that, in the course of an inflammatory process, an increased number of receptors becomes available for activation. The Cannabinoid Receptor type 2 gene (CNR2; GeneID1269) maps on 1p36.11. In order to investigate the possible involvement of CB2 in CD establishment, immunohistochemistry toward CB2 receptor and CD4+ cells in small bowel biopsies from celiac children and association analysis, through TaqMan assay, of a CNR2 common missense variant, rs35761398 (CAA/CGG), resulting in the aminoacidic substitution of Glutamine at codon 63 with Arginine (Q63R), in a cohort of 327 South Italian children have been performed. We observed in this study that CB2 is up-regulated in CD small bowel biopsies and CNR2 rs35761398 is significantly associated with CD (χ 2 = 37.064; d.f. 1; p = 1.14 × 10 -9). Our findings suggest a role of CB2 in CD. The Q63R variant, increasing more than six-fold the risk for CD susceptibility, might eventually represent a novel molecular biomarker for CD risk stratification. Indeed, we provide here further evidence that CB2 receptor plays a critical role in autoimmunity susceptibility and indicates that it represents a molecular target to pharmacologically modulate the immune components in CD. © 2012 Elsevier Ltd.