Table 1.
Morphometric muscle data
| Tissue | Mb, g | Mm/Mb, g/kg | VV(mt,f), % | JV(c,f), mm·mm−3 | V(mt), cm3 | J(c), m |
|---|---|---|---|---|---|---|
| Mole rats | 136.8 ± 10.0 | |||||
| (108–151) | ||||||
| Skeletal muscle | 272.2 ± 27.8* | 8.83 ± 0.17* | 1757 ± 167* | 3.14 ± 0.60 | 60,241 ± 7138 | |
| (206–295) | (8.5–9.1) | (1498–2068) | (1.98–4.00) | (46,081–68,900) | ||
| Heart | 3.89 ± 0.42 | 31.76 ± 0.95 | 4462 ± 491 | 0.164 ± 0.010 | 2340 ± 393 | |
| (3.10–4.50) | (29.87–32.87) | (3480–4692) | (0.152–0.183) | (1691–3047) | ||
| White rats | 139.5 ± 3.66 | |||||
| (130–147) | ||||||
| Skeletal muscle | 346.7 ± 10.6 | 6.04 ± 0.59 | 1346 ± 70 | 2.77 ± 0.31 | 61,282 ± 3519 | |
| (315–361) | (5.2–7.7) | (1210–1482) | (2.31–3.69) | (55,980–70,884) | ||
| Heart | 3.23 ± 0.05 | 34.54 ± 1.41 | 5280 ± 430 | 0.156 ± 0.005 | 2384 ± 197 | |
| (3.11–3.32) | (30.90–37.01) | (4046–5902) | (0.141–0.165) | (1802–2672) |
Values are given as mean ± SEM (n = 3 for mole rats and n = 4 for white rats). Numbers in parentheses indicate range of values. Mb, body mass; Mm/Mb, relative whole body muscle mass; VV(mt,f), volume density of total mitochondria; JV(c,f), capillary length density; V(mt), total mitochondrial volume; and J(c), total muscle capillary length.
*
Significantly different from white rat (P < 0.05).