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1.
Chinese Pharmacological Bulletin ; (12): 38-41, 2005.
Artículo en Chino | WPRIM | ID: wpr-857391

RESUMEN

Aim: To explore pharmacokinetics of NG-nitro-D-arginine (D-NNA)and NG-nitro-L-arginine (L-NNA)in conscious rats. Methods: The plasma concentration of D-NNA and L-NNA were determined by chiral ligand exchange method with capillary electrochromatography (CEC). Pharmacokinetic parameters were obtained using non-compartment model and were fitted using a computer program DAS. Results: The metabolism of D-NNA and L-NNA exhibited significant isomeric selectivity. The CL and T1/2 of D-NNA and D-NNA were(0.46 ± 0.02) ml·h-1·kg-1 vs (0.17 ± 0.03) ml·h-1·kg-1 (P < 0.05) and (1.44 ± 0.28) h vs (3.48 ± 0.41) h (P < 0.05), respectively. Unidirectional chiral conversion rate of D-NNA to L-NNA was (50.03 ± 8.5)%. Conclusion: The stereoselective pharmacokinetics of N G-nitro-arginine observed maybe due to the unidirectional chiral inversion of D-NNA to L-NNA.

2.
China Pharmacy ; (12)2005.
Artículo en Chino | WPRIM | ID: wpr-525659

RESUMEN

0.05)and the main pharmacokinetic parameters were close to each other.CONCLUSION:No stereoselective differences lies in the pharmacokinetics processe of amlodipine enatiomers in the body of rabbits.

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