Table V.
Group | Gr 1 | Gr 2 | Gr 4 | Gr 5 | Gr 6 | Gr 7 |
---|---|---|---|---|---|---|
Insulin Islet Score a; 0–4, mean | 4.0 | 3.0 | 2.50 | 3.73 | 3.70 | 3.6 |
SEM | 0.0 | 0.24 | 0.19 | 0.12 | 0.24 | 0.21 |
p value versus Gr 2 | 0.0003 | ----- | 0.1136 | 0.0111 b | 0.0486 b | 0.0703 c |
Three sections per animal of at least 200um apart and 5 animals/group (15 sections) were stained with H&E and adjacent sections were stained for insulin. Insulin Scoring System: 0=no staining, 1=<50% β-cells staining in an individual islet, 2=50–75% β-cells staining, 3=75–90% β-cells staining, 4=>90% β-cells staining.
Omeprazole treatment and Omeprazole+PGC-HBEGF have significantly higher insulin scores compared to the Gr 2 control.
Power analysis of the difference between Gr 2 and Gr 7 of 0.6 (with average standard deviation of 0.8 (0.21SEM*151/2)) indicates that we need at least 30 sections to rule out lack of significance with power of 80% and we only analyzed 15 sections. In other words, treatment with additional gastrin may have reduced the insulin content of the islet β-cells contributing to loss of analytical resolution.