Group | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
BW g | 360±53# | 368±34 | 376±62 | 366±70 | 404±30 | 430±15 | 360±75 | 304±5¶ |
V(lung) mL | 5.2±0.9 | 4.8±1.5 | 4.6±0.6 | 6.2±1.6+ | 8.7±1.9§ | 5.3±0.6 | 5.7±.1.0 | 5.6±0.5 |
V(par,lung) mL | 4.68±1.11 | 4.06±1.18 | 4.07±0.59 | 5.57±1.51+ | 8.04±1.66§ | 4.91±0.62 | 5.32±1.03 | 5.02±0.55 |
V(nonpar,lung) mL | 0.54±0.27 | 0.75±0.41 | 0.48±0.15 | 0.58±0.26 | 0.71±0.37 | 0.43±0.29 | 0.42±0.26 | 0.60±0.39 |
V(ed,lung) mL | 0.00±0.00§ | 0.00±0.00§ | 0.00±0.00§ | 0.12±0.19ƒ | 0.22±0.17 | 0.00±0.00 | 0.00±0.00 | 0.00±0.00 |
V(ery,lung) mL | 0.01±0.01# | 0.07±0.08 | 0.03±0.03 | 0.08±0.09+ | 0.41±0.25§ | 0.00±0.00 | 0.00±0.00 | 0.00±0.00¶ |
V(eryed,lung) mL | 0.01±0.01## | 0.07±0.08¶ | 0.03±0.03¶ | 0.20±0.23¶¶ | 0.64±0.36§ | 0.01±0.04 | 0.00±0.00 | 0.00±0.00¶ |
V(air,lung) mL | 4.49±1.08 | 3.76±1.15 | 3.87±0.54 | 5.37±1.33+ | 7.40±1.46§ | 4.90±0.62 | 5.16±1.14 | 4.87±0.51 |
V(surf,lung) mL | 0.18±0.12§ | 0.23±0.11§ | 0.17±0.08§ | 0.00±0.00ƒ | 0.00±0.00 | 0.00±0.00++ | 0.16±0.17§§ | 0.14±0.06 |
V(lum,nonpar) mL | 0.32±0.15 | 0.35±0.11 | 0.24±0.08 | 0.25±0.11 | 0.30±0.16 | 0.23±0.12 | 0.25±0.14 | 0.39±0.25 |
V(wall,nonpar) mL | 0.22±0.11 | 0.40±0.32 | 0.24±0.09 | 0.34±0.21 | 0.42±0.22 | 0.20±0.18 | 0.18±0.13 | 0.22±0.13 |
Wall-to-lumen ratio | 0.72±0.12 | 1.05±0.55 | 1.05±0.29 | 1.42±0.97 | 1.42±0.21 | 0.74±0.43 | 0.68±0.11 | 0.61±0.11 |
Stereological data are presented as mean±sd. BW: body weight; V: total volume; par: parenchyma; nonpar: nonparenchyma; ed: intra-alveolar oedema; ery: erythrocytes; air: air-filled spaces within parenchyma; surf: intra-alveolar surfactant; lum: lumen of nonparenchymal vessels and airways; wall: wall of nonparenchymal vessels and airways. #: p<0.05 versus group 8; ¶: p<0.05 versus group 1; +: p<0.05 versus group 5; §: p<0.05 versus group 4; ƒ: p<0.05 versus groups 1–3; ##: p<0.05 versus groups 2–4 and 8; ¶¶: p<0.05 versus groups 1 and 5; ++: p<0.05 versus group 7; §§: p<0.05 versus group 6.