Skip to main content
. Author manuscript; available in PMC: 2009 Mar 1.
Published in final edited form as: Clin Immunol. 2007 Dec 21;126(3):345–352. doi: 10.1016/j.clim.2007.11.002

Figure 1. Effect of bromelain on cytokine and chemokine secretion by human colon tissues.

Figure 1

Paired colon biopsies derived from normal patients without IBD (n = 8) and inflamed colon from patients with CD (n = 18) and UC (n = 12) were treated with media alone or 1 mg/ml bromelain in media at 37° for 1 hr, then washed to remove and inactivate bromelain prior to culture. Cytokine levels detected in the media following organ culture for 24 hrs are reported as pg/ml/mg tissue. The box represents the lower through upper quartiles of values obtained. Median values are indicated by horizontal lines within the boxes. The minimum and maximum values obtained are indicated by the endpoints of the vertical lines. Vertical lines that are longer than the 1.5 times the height of the box indicate the observance of outliers. Note that the axes are broken in panels reporting results for IL-1β, MCP-1, and TNF to reflect that wide ranges of values observed for those cytokines. * indicates p ≤0.03 when cytokine levels produced by media-treated and bromelain-treated tissues are compared using the Wilcoxon signed- rank test. Cytokine secretion from non-inflamed biopsies from patients with CD (n = 22) and UC (n = 20) did not differ from that seen with normal tissues, either at baseline (Table 2) or after bromelain treatment. Therefore, these data are not shown in this figure.