Table 2.

Effects of hyperthermia on cell membrane and blood gas variables in erythrocytes

Treatment	Hb (mg/ml)	P50 (mmHg)	pH	K+ (mmol/L)	Na+ (mmol/L)	ATPase (U/107 cells)	2,3-DPG (g/L)	Free Hb (mg/ml)
Control	60.53±11.61	19.08±4.96	7.46±0.13	1.47±0.53	150.22±1.11	0.080±0.018	9.68±1.77	0.089±0.004
HT30	60.85±11.52	20.73±6.29	7.44±0.13	1.77±0.63	150.27±1.12	0.068±0.023	9.05±1.41	0.091±0.006
HT60	59.90±10.72	20.14±6.11	7.42±0.13	2.01±0.68	150.11±1.59	0.067±0.021	8.47±1.29	0.091±0.008
HT120	58.71±11.52	20.12±6.08	7.41±0.13	2.62±0.75**	149.63±1.28	0.059±0.017	8.07±1.55	0.098±0.005**

Data are expressed as mean±SD, with n=9 in each experiment

^** P<0.01 vs. control (treated at 37 °C for 30 min)

HT30, HT60, and HT120: hyperthermia for 30, 60, and 120 min, respectively