Table 3.

Lactate dehydrogenase isozyme activities from Ochotona princeps residing at 3350 m, Ochotona collaris residing at 1070 m,Ochotona hyperborea residing at sea level and laboratory rabbits(Oryctolagus cuniculus)

HeartDiaphragmVastusGastrocnemiusSoleus
H-LDH activity      
O. princeps 399.85±13.27a 428.43±14.24a 565.57±17.15a 689.75±36.46a 886.24±46.33a 
O. collaris 162.24±8.17b 181.65±14.33b 245.61±28.39b 245.55±17.35b 229.59±22.36b 
O. hyperborea 109.31±14.08c — — — — 
Rabbit 147.48±12.11b 407.96±9.85c 161.38±84.64c 422.54±11.94c 128.25±23.56c 
M-LDH activity      
O. princeps 5.97±0.20a 157.62±15.86a 453.60±21.61a 537.29±32.73a 256.16±49.90a 
O. collaris 10.54±0.53b 101.00±3.83b 373.94±46.67b 310.10±41.31b 273.06±44.59a 
O. hyperborea 16.39±2.59c — — — — 
Rabbit 4.02±0.54d 128.10±5.05c 959.69±130.09c 529.99±13.66a 40.57±4.56b 
HeartDiaphragmVastusGastrocnemiusSoleus
H-LDH activity      
O. princeps 399.85±13.27a 428.43±14.24a 565.57±17.15a 689.75±36.46a 886.24±46.33a 
O. collaris 162.24±8.17b 181.65±14.33b 245.61±28.39b 245.55±17.35b 229.59±22.36b 
O. hyperborea 109.31±14.08c — — — — 
Rabbit 147.48±12.11b 407.96±9.85c 161.38±84.64c 422.54±11.94c 128.25±23.56c 
M-LDH activity      
O. princeps 5.97±0.20a 157.62±15.86a 453.60±21.61a 537.29±32.73a 256.16±49.90a 
O. collaris 10.54±0.53b 101.00±3.83b 373.94±46.67b 310.10±41.31b 273.06±44.59a 
O. hyperborea 16.39±2.59c — — — — 
Rabbit 4.02±0.54d 128.10±5.05c 959.69±130.09c 529.99±13.66a 40.57±4.56b 

Values are means ± S.E.M., measured in μmol substrate converted g-1 wet tissue min-1. Statistical analyses were performed to compare activities of each enzyme between species within each tissue. Values within each column which do not have the same superscript letter differ significantly (P<0.05) as determined by analysis of variance and Scheffe's multiple range test. N=3 for all species.

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