Xylose absorption in Papua New Guineans with leprosy.

Blood xylose concentrations were measured at 60, 90 and 120 min after 25 xylose was given orally in 33 well-nourished Papua New Guinean in-patients at Port Moresby; 12 had lepromatous (group A) and seven non-lepromatous (group B) leprosy, and 14 were controls (group C). Differences between mean xylose concentrations were not significant at any time interval. Three patients (two in group A and one in group B) had 90 min xylose concentrations less than 2.0 mmol l-1. There was no association between xylose concentration and current therapy. Leprosy does not impair small-intestinal absorptive function; it therefore differs from other chronic infections, in which there is xylose malabsorption.