Childhood coeliac disease diagnoses in Scotland 2009-2010: the SPSU project.

OBJECTIVES: To establish the incidence of childhood coeliac disease (CD) in Scotland between 1 September 2009 and 31 August 2010, to determine clinical features at presentation and reasons for diagnosis, and to identify any differences in incidence and practice between regions. DESIGN: Prospective data collection through the Scottish Paediatric Surveillance Unit (SPSU). Strategic contacts in each tertiary gastrointestinal region (East, West and North) were emailed monthly to report new cases of CD (<16 years). A clinical questionnaire was completed for each case. Additionally, regional laboratories were asked to report the number of diagnostic antibody tests for CD performed over the year. SETTING: This national study looked at the total cases within Scotland. Scotland has a population of 5.2 million, with the mid-year estimate in 2009 of 912 144 children under the age of 16. RESULTS: 91 new cases were reported, giving an overall adjusted incidence of 10.0/100 000/year. Incidence in the East was 16.3/100 000/year, West 8.1/100 000/year and North 7.7/100 000/year. Cases diagnosed due to active screening in the East (4.6/100 000/year) were more than twice the number observed in the West (2.0/100 000/year) and North (1.3/100 000/year), as was the incidence of classic cases. The most frequent symptoms reported were abdominal pain (50/91; 54.9%), failure to thrive (29/91; 31.9%), fatigue (29/91; 31.9%), diarrhoea (27/91; 29.7%) and bloating (19/91; 20.9%). Twenty-two children (24.2%) were diagnosed due to active screening, of which 14 had associated type 1 diabetes mellitus, one Down syndrome and seven had family history. Fifty-five per cent (12/22) of the patients diagnosed through active screening were asymptomatic. Significantly more CD diagnostic antibody tests were performed per head of population in the East compared with the West (OR 1.65, 95% CI 1.57 to 1.73) and North (OR 1.81, 95% CI 1.70 to 1.92). CONCLUSIONS: Approximately double the incidence of paediatric CD was observed in the East of Scotland. Evidence of more actively screened cases diagnosed and more antibody tests performed in the region suggests a lower threshold to test. An environmental influence cannot be dismissed since more classic cases were also captured. Further research is needed to highlight the role of any exogenous factors.

The microaerophilic microbiota of de-novo paediatric inflammatory bowel disease: the BISCUIT study.

INTRODUCTION: Children presenting for the first time with inflammatory bowel disease (IBD) offer a unique opportunity to study aetiological agents before the confounders of treatment. Microaerophilic bacteria can exploit the ecological niche of the intestinal epithelium; Helicobacter and Campylobacter are previously implicated in IBD pathogenesis. We set out to study these and other microaerophilic bacteria in de-novo paediatric IBD. PATIENTS AND METHODS: 100 children undergoing colonoscopy were recruited including 44 treatment naïve de-novo IBD patients and 42 with normal colons. Colonic biopsies were subjected to microaerophilic culture with Gram-negative isolates then identified by sequencing. Biopsies were also PCR screened for the specific microaerophilic bacterial groups: Helicobacteraceae, Campylobacteraceae and Sutterella wadsworthensis. RESULTS: 129 Gram-negative microaerophilic bacterial isolates were identified from 10 genera. The most frequently cultured was S. wadsworthensis (32 distinct isolates). Unusual Campylobacter were isolated from 8 subjects (including 3 C. concisus, 1 C. curvus, 1 C. lari, 1 C. rectus, 3 C. showae). No Helicobacter were cultured. When comparing IBD vs. normal colon control by PCR the prevalence figures were not significantly different (Helicobacter 11% vs. 12%, p = 1.00; Campylobacter 75% vs. 76%, p = 1.00; S. wadsworthensis 82% vs. 71%, p = 0.312). CONCLUSIONS: This study offers a comprehensive overview of the microaerophilic microbiota of the paediatric colon including at IBD onset. Campylobacter appear to be surprisingly common, are not more strongly associated with IBD and can be isolated from around 8% of paediatric colonic biopsies. S. wadsworthensis appears to be a common commensal. Helicobacter species are relatively rare in the paediatric colon. TRIAL REGISTRATION: This study is publically registered on the United Kingdom Clinical Research Network Portfolio (9633).

Overweight and obesity in deltaF508 homozygous cystic fibrosis.

Overweight (9%) and obesity (1%) in patients with cystic fibrosis homozygous for the deltaF508 mutation (CFdeltaF508) were non-trivial. Children with CFdeltaF508, in contrast to the general population, showed a positive association between body mass index and lung function for all body mass index z-scores.