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Table 1 Protective efficacy of pIPC and IPC treatment in NOD mice followed-up for 29–30 weeks

From: Do we really need to differentiate mesenchymal stem cells into insulin-producing cells for attenuation of the autoimmune responses in type 1 diabetes: immunoprophylactic effects of precursors to insulin-producing cells

Weeks

Number of diabetic mice in the pIPC group (n = 24)

Number of diabetic mice in the IPC group (n = 10)

Number of diabetic mice in the control group (n = 28)

pIPC vs control p OR (95% CI)

Protective efficacy of pIPCs (1 – OR) × 100

IPC vs control p OR (95% CI)

Protective efficacy of IPCs (1 – OR) × 100

9 weeks

0 (0%)

0 (0%)

0 (0%)

–

–

–

–

10 weeks

0 (0%)

0 (0%)

0 (0%)

–

–

–

–

12 weeks

0 (0%)

0 (0%)

3 (10.7%)

p < 0.14 OR = 0.14 (0.2–1.25)

86%

p < 0.39 OR = 0.35 (0.04–2.99)

65%

14 weeks

0 (0%)

0 (0%)

5 (17.86%)*

p < 0.03 OR = 0.087 (0.01–0.7)

91.3%

p < 0.19 OR = 0.2 (0.02–1.68)

80%

16 weeks

1 (4.2%)

0 (0%)

6 (21.43%)

p < 0.07 OR = 0.22 (0.06–0.83)

78%

p < 0.13 OR = 0.16 (0.02–1.34)

84%

18 weeks

3 (12.5%)*

2 (20%)

9 (32.14%)

p < 0.08 OR = 0.33 (0.13–0.88)

67%

p < 0.39 OR = 0.6 (0.19–1.88)

40%

20 weeks

4 (16.2%)

3 (30%)*

12 (42.86%)

p < 0.039 OR = 0.29 (0.12–0.7)

71%

p < 0.37 OR =0.62 (0.22–1.73)

38%

22 weeks

5 (20.8%)

4 (40%)

14 (50%)

p < 0.02 OR = 0.26 (0.06–1.03)

74%

p < 0.43 OR =0.69 (0.26–1.87)

31%

24 weeks

6 (25%)

4 (40%)

14 (50%)

p < 0.06 OR = 0.33 (0.08–1.24)

67%

p < 0.43 OR =0.69 (0.26–1.87)

31%

26 weeks

6 (25%)

4 (40%)

14 (50%)

p < 0.06 OR = 0.33 (0.08–1.24)

67%

p < 0.43 OR =0.69 (0.26–1.87)

31%

28 weeks

6 (25%)

4 (40%)

17 (60.71%)

p < 0.009 OR = 0.216 (0.05–0.82)

78.4%

p < 0.22 OR = 0.45 (0.17–1.24)

55%

29/30 weeks

6 (25%)

4 (40%)

17 (60.71%)

p < 0.009 OR = 0.216 (0.05–0.82)

78.4%

p < 0.22 OR = 0.45 (0.17–1.24)

55%

  1. Values are shown as n (%)
  2. *Cumulative numbers of mice becoming diabetic are shown over time
  3. CI confidence interval, IPC insulin-producing cell, OR odds ratio, pIPC precursor to insulin-producing cell