Table 5.

Measurements of mucosal proteins by ELISA

Protein	IBS-D (n = 15)	Control Patients (n = 6)	Estimated Sample Size per Group to Observe 2.5-Fold Difference in Protein Concentration, Based on Pooled SD of Each Protein
INADL	9.39 (2.68, 25.74)	5.83 (2.9, 23.2)	30
MAGI1	0.83 (0.00, 2.75)	0.79 (0.00, 2.26)	13
MAPKAPK5	0.54 (0.04, 1.96)	0.73 (0.00, 1.60)	15
PGK1	4.17 (3.71, 4.53)	4.38 (3.69, 4.83)	Housekeeping gene

Data are median and interquartile range (IQR); all comparisons are not statistically significant; PGK1 is the housekeeping gene. There was insufficient mucosa for protein measurements in 1 control patient. SD, standard deviation.