Table 1

Kinetic parameters of β lactam antibiotic uptake

Reference	β lactam (species)	K_m(mM)	V_max
This study	Penicillin G (human)	13.9	52^1-150
Poschet and colleagues21	Penicillin G (rabbit)	21.7	58^1-150
Inui and colleagues14	Cefixime (rat)	0.8	6.2^1-151
Yuasa and colleagues18	Cephradine (rat)	1.6	1.7^1-151
	Cephradine (rabbit)	1.9	20.7^1-151
Okano and colleagues42	Cephradine (rat)	9.4	5.7^1-151
Tsuji and colleagues12	Cefixime (rat)	0.83	2.67^1-150
	Ceftibuten (rat)	0.17	4.72^1-151
Muranushi and colleagues43	Cefaclor (rat)	3.0	0.16^1-151