Table 2.
Comparison of percentage of number and area of motor endplates between denervated interossei and denervated biceps in rats
| Interossei | Biceps | ||||||
|---|---|---|---|---|---|---|---|
| Denervated side | Normal side | Percentage | Denervated side | Normal side | Percentage | ||
| Number of MEP | 5 weeks | 31.7 | 72.9 | 44.1* | 34.0 | 57.3 | 58.0* |
| (27.7–33.0) | (62.5–74.5) | (41.7–45.9) | (30.1–36.5) | (54.5–59.9) | (56.2–61.3) | ||
| 7 weeks | 20.3 | 72.1 | 29.1* | 22.9 | 58.5 | 38.8* | |
| (19.9–21.8) | (68.5–74.8) | (27.3–31.4) | (21.7–24.4) | (56.4–63.2) | (36.7–40.4) | ||
| Area of MEP | 5 weeks | 25.7 | 84.9 | 29.7* | 60.2 | 145 | 41.8* |
| (22.6–27.9) | (77.5–93.8) | (11.8–17.4) | (56.9–65.9) | (138.9–156.9) | (38.8-43.5) | ||
| 7 weeks | 13.4 | 88.3 | 14.4* | 40.3 | 156.6 | 27.1* | |
| (11.5–14.1) | (82.5–94.6) | (13.2–16.4) | (36.4–43.9) | (147.5–174.1) | (22.2–27.8) | ||
Percentage: Divide the value on the denervated side by that of the normal side, and multiply by 100%. All data are expressed as median with interquartile range. Number of MEP: The average number of motor endplates per section that obtained from the average of the 5 sections chosen to be every 2 of the 10 sections. Area of MEP: The average area of one motor endplate that gained from the average of 50 motor endplates chosen equally and randomly from those five sections. *P < 0.01 (Percentage of number (or area) of MEP in interossei/biceps). MEP: Motor endplates.