Exposure to screens during meals in infants with functional gastrointestinal disorders

BACKGROUND

Since meals are a special moment in the parent-infant relationship and functional gastrointestinal disorders (FGD) are frequent in infants, this study mainly aimed to describe the frequency of exposure to screens during meals in infants with FGD.

METHODS

This French non-interventional, cross-sectional, and multicenter study was conducted with FGD infants (aged 1-12 months), consecutively included by private pediatricians and general practitioners. Descriptive analysis was performed.

RESULTS

Data from 816 infants, included by 246 physicians, were analyzed: mean age: 4.8 ± 2.9 months; FGD: regurgitation (81%), colic (61%), constipation (30%), and/or diarrhea (12%). Overall, 465 infants (57.0%, 95% CI [45.6%-60.4%]) were regularly exposed to screens during meals. Of these exposed infants, 131 (28.2%, 95% CI [24.1%-32.3%]) were directly exposed. Explicative factors of the overall screen exposure during meals were the following: >2 children in the household (p = 0.0112), infant meals in the living room (p < 0.0001) or the dining room (p = 0.0001), and mother or father being blue-collar workers, white-collar workers, or without employment (mother: p = 0.0402; father: p = 0.0375).

CONCLUSION

This real-world French study showed the high proportion of FGD infants under 12 months of age who are exposed to screens during meals. Our data suggest that information to parents on the potential adverse effects of screen exposure should be reinforced, including for infants.

Clinical severity and molecular characteristics of circulating and emerging rotaviruses in young children attending hospital emergency departments in France

Group A rotavirus (RVA) is the leading cause of acute gastroenteritis in young children worldwide. A prospective surveillance network has been set up to investigate the virological and clinical features of RVA infections and to detect the emergence of potentially epidemic strains in France. From 2009 to 2014, RVA-positive stool samples were collected from 4800 children <5 years old attending the paediatric emergency units of 16 large hospitals. Rotaviruses were then genotyped by RT-PCR with regard to their outer capsid proteins VP4 and VP7. Genotyping of 4708 RVA showed that G1P[8] strains (62.2%) were predominant. The incidence of G9P[8] (11.5%), G3P[8] (10.4%) and G2P[4] (6.6%) strains varied considerably, whereas G4P[8] (2.7%) strains were circulating mostly locally. Of note, G12P[8] (1.6%) strains emerged during the seasons 2011-12 and 2012-13 with 4.1% and 3.0% prevalence, respectively. Overall, 40 possible zoonotic reassortants, such as G6 (33.3%) and G8 (15.4%) strains, were detected, and were mostly associated with P[6] (67.5%). Analysis of clinical records of 624 hospitalized children and severity scores from 282 of them showed no difference in clinical manifestations or severity in relation to the genotype. The relative stability of RVA genotypes currently co-circulating and the large predominance of P[8] type strains may ensure vaccine effectiveness in France. The surveillance will continue to monitor the emergence of new reassortants that might not respond to current vaccines, all the more so as all genotypes can cause severe infections in infants.

Card15 gene overexpression in mononuclear and epithelial cells of the inflamed Crohn's disease colon

BACKGROUND

Crohn's disease is one of the principal human chronic inflammatory bowel diseases. Although its aetiology is still unknown, its complex pathogenesis has environmental, immunological, and genetic determinants. CARD15 is the first susceptibility gene implicated in the predisposition to Crohn's disease and is known to be expressed only in monocytes. However, its expression in situ has not yet been studied.

AIMS

To analyse the tissue distribution of CARD15 and identify cells producing CARD15 in samples of colon from patients with Crohn's disease and control subjects.

PATIENTS AND METHODS

We analysed CARD15 gene expression in surgical specimens of colon from eight children with Crohn's disease and nine controls by immunohistochemistry, in situ hybridisation, and reverse transcription-polymerase chain reaction (RT-PCR).

RESULTS

We showed that CARD15 was present only in the cytoplasm of macrophages in the normal colon. Increased CARD15 expression was detected in Crohn's disease lesions. There were more CARD15 positive cells in Crohn's disease lesions than in uninvolved areas. Both intestinal epithelial cells, macrophages, and their derivatives overproduced CARD15 in Crohn's disease. To further assess CARD15 expression by intestinal epithelial cells, we performed RT-PCR on freshly isolated intestinal epithelial cells, and showed that these cells isolated from Crohn's disease samples contained more CARD15 mRNA than intestinal epithelial cells from controls.

CONCLUSIONS

We have demonstrated that colonic involvement in active Crohn's disease is associated with increased CARD15 gene expression in both macrophages and intestinal epithelial cells. Therefore, this deregulation can affect the host-environment interaction and thus contribute to the pathogenesis of this disease.