Intestinal permeability and absorptive capacity in children with portal hypertension.
BACKGROUND
Portal hypertension may affect intestinal function leading to malnutrition in children with liver disease. The aim was to determine whether children with portal hypertension with or without liver disease had impaired absorptive capacity and intestinal barrier function (intestinal permeability) and to ascertain whether these abnormalities related to changes in body composition.


METHODS
Twenty-six children with portal hypertension were divided according to aetiology into: Group 1 intrahepatic (n = 15) and Group 2 prehepatic (n = 11). Thirty-five children acted as controls. Carbohydrate absorption and intestinal permeability were assessed using a sugar absorption/permeability test and a variety of anthropometric measurements were obtained.


RESULTS
3-O-methyl-D-glucose, D-xylose and L-rhamnose excretion were significantly reduced in both patient groups compared to controls (P < or = 0.008) and the differential urinary excretion of melibiose/rhamnose (intestinal permeability) was significantly increased in Group 1 only (P < 0.05). Anthropometric measurements showed low Z scores in both groups, but there was no significant (P > 0.05) difference between them. There was no significant correlation between urinary excretion of sugars. anthropometric measurements and energy intake.


CONCLUSIONS
Increased portal pressure reduces the absorptive capacity of the small intestine, while liver disease itself leads to increased intestinal permeability.
Paediatric Liver Services, Paediatric Surgery, King's College Hospital, Denmark Hill, London, UK.
R M
RM
Taylor
I
I
Bjarnason
P
P
Cheeseman
M
M
Davenport
A J
AJ
Baker
G
G
Mieli-Vergani
A
A
Dhawan
D000293:Adolescent; D000886:Anthropometry; D002241:Carbohydrates / Q000493:pharmacokinetics; D002648:Child; D002675:Child, Preschool; D003938:Diagnostic Techniques, Digestive System; D003955:Diagnostic Tests, Routine; D006801:Humans; D006975:Hypertension, Portal / Q000378:metabolism*; D007223:Infant; D007408:Intestinal Absorption; D007413:Intestinal Mucosa / Q000378:metabolism; D007421:Intestine, Small / Q000378:metabolism*; D010539:Permeability
D002241:Carbohydrates