title: Antral inflammatory cells, gastric emptying, and electrogastrography in pediatric functional dyspepsia.
abstract: The aims of the current study were to determine the activation states of antral eosinophils and mast cells and to evaluate the interactions of antral inflammatory cells with gastric emptying and electrogastrography (EGG) in 30 pediatric patients with functional dyspepsia. Eosinophil degranulation was moderate in 42% and extensive in 54% of patients. Mast cell degranulation was > 50% in 81% of patients. Elevated mast cell density was associated with slower one hour gastric emptying and increased preprandial dysrhythmia. Mast cell density correlated with the preprandial percentage tachygastria. CD3+ cell density correlated with the preprandial percentage tachygastria also, but only in patients with increased eosinophil density. In conclusion, antral eosinophils and mast cells are significantly activated in pediatric functional dyspepsia. Mast cell density is associated with delayed gastric emptying and preprandial dysrhythmia, suggesting that there may be an interaction between antral inflammation and gastric electromechanical dysfunction in the pathophysiology of pediatric functional dyspepsia.
authors.affiliation: Section of Gastroenterology, The Children's Mercy Hospital and Clinics, 2401 Gillham Road, Kansas City, MO 64108, USA. cfriesen@cmh.edu
authors.forename: Craig A
authors.initials: CA
authors.lastname: Friesen
authors.forename: Zhiyue
authors.initials: Z
authors.lastname: Lin
authors.forename: Meenal
authors.initials: M
authors.lastname: Singh
authors.forename: Vivekanand
authors.initials: V
authors.lastname: Singh
authors.forename: Jennifer V
authors.initials: JV
authors.lastname: Schurman
authors.forename: Nanci
authors.initials: N
authors.lastname: Burchell
authors.forename: Jose T
authors.initials: JT
authors.lastname: Cocjin
authors.forename: Richard W
authors.initials: RW
authors.lastname: McCallum
mesh_terms: D000293:Adolescent; D002648:Child; D004415:Dyspepsia / Q000473:pathology* / Q000503:physiopathology*; D004594:Electrophysiology / Q000379:methods*; D004804:Eosinophils / Q000473:pathology / Q000502:physiology; D005260:Female; D005746:Gastric Emptying / Q000502:physiology*; D006801:Humans; D007249:Inflammation / Q000473:pathology / Q000503:physiopathology; D008297:Male; D008407:Mast Cells / Q000473:pathology / Q000502:physiology; D040542:Mechanotransduction, Cellular / Q000502:physiology; D011706:Pyloric Antrum / Q000473:pathology*