2003, Number 2
<< Back Next >>
Rev Med Hosp Gen Mex 2003; 66 (2)
Estudio in vivo del diclofenaco de liberación prolongada. Un perfil farmacocinético
Fernández-Santos A, Martínez-Rossier L, Amancio-Chassin O, Gómez-Sánchez M, Marcelin-Jiménez G, Ángeles-Moreno AP, Martín-Campo A, Higuera-Ramírez F
Language: Spanish
References: 13
Page: 83-89
PDF size: 96.74 Kb.
ABSTRACT
Sodic diclofenac is nonsteroid anti-inflammatory agent that administered by oral route in rheumatic disorders.
Objective: to evaluate pharmacokinetic of the sodic diclofenac of 100 mg with pharmaceutical form of prolonged liberation produced by a national pharmaceutical laboratory and quantify the adverse events.
Material and methods: the experimental test was made in 24 masculine healthy subjects. 5 doses of diclofenac were administered to obtain the steady state. Study design consisted of a treatment, a period, a sequence, randomized, longitudinal and prospective. The analytical method by high performed liquid chromatography was used with UV-visible detector. The pharmacokinetic parameters were calculated with software WINNONLIN v. 3.1, through a model noncompartimental.
Results: The area under the plasma drug concentration-time curve from 0 to t (AUC0-t) 2318 + 182.84 ng h/ml, maximum plasma drug concentration (Cmax) 1120.98 + 191.82 ng/ml and time maximum concentration (Tmax) 1.96 + 0.35 h. The adverse events were abdominal pain and pirosis.
Conclusions: In relation to the absorption of diclofenac this one appeared in fast form with a similar Tmáx to the reported, previous the Cmáx was observed a plateau of 1. 5 h and having a two compartimental model could bring with himself a better antiinflammatory effect, which would have to be demonstrated with some study with patients. Diclofenac has therapeutic concentrations with to say that the studied pharmaceutical form is delayed release.
REFERENCES
Aiache JM, Devissaguet JPh, Guyot-Herman AM. Biofarmacia. 2a ed. México, DF: El Manual Moderno, 1983.
Título Quinto, Investigación para la Salud. En: Leyes y Códigos de México. Ley General de Salud. 14a ed, México, DF: Editorial Porrúa, 1997; 18-20.
Norma Oficial Mexicana, No. 177, SSA-1, Que establece las pruebas y procedimientos para demostrar un medicamento intercambiable. Requisitos a que se deben sujetarse los terceros autorizados que realizan las pruebas. Publicada en el Diario Oficial el 7 de mayo de 1999. pp 44-67.
Roberts J, Morrow J. Analgesic antipyretic and antiinflammatory agents and drugs employed in the treatment of gout. In: Hardman JG, Limbird LE (eds). Goodman and Gilman. The pharmacological basis of therapeutics. 10th ed. New York: McGraw-Hill, 2001; 687-731.
Diclofenac sodium delayed release tablets –In vivo bioequivalence and in vitro dissolution testing. In: In Vivo Bioequivalence Guidances The United States Pharmacopeia, The National Formulary, 24: Philadelphia. United States Pharmacopeial Convention: 2000; 2070–2072.
Introduction. In: Shein-Chung Ch, Jen-Pei L. Design and analysis of bioavailability and bioequivalence studies. 2nd ed. New York: Marcel Dekker, 2000; 1-30
Brombacher PJ, Cremers HM, Verheesen PE, Quanjel-Schreurs RA. Quantitative determination of sodium -o-[(2,6-dichrophenyl) -amino] phenylacetate (Diclofenac) in human blood plasma or serum. Arzneim Forsch Drug Res 1997; 27: 1597-1599.
Statistical methods for average bioavailability. In: Shein-Chung Ch, Jen-Pei L. Design and analysis of bioavailability and bioequivalence studies. 2nd ed. New York: Marcel Dekker, 2000; 79-124.
El Sayed YM, Abdel Hammed ME, Suleiman MS, Najib NM. A rapid and sensitive high performance liquid chromatographic method for determination of diclofenac sodium in serum and its use in pharmacokinetic studies. Pharma Pharmacol 1998; 40: 727-729.
Scheidel B, Blume H, Walter K, Stanislaus F, Babej-Dolle RM. The bioavailability of enteric coated diclofenac formulations. Bioavailability following single administration of a multiple-unit formulation in comparison to a single-unit formulation under fasting and non-fasting conditions. Arzneimittel-Forschung 1994; 44: 544-550.
Macia MA, Frias J, Carcas AJ, Guerra P, Valiente R, Lucero ML. Comparative bioavailability of a dispersible formulation of diclofenac and finding of double plasma peaks. Inter J Clin Pharmacol Ther Toxicol 1995; 33: 333-339.
Honorato J, Montes B, Suárez J, Lucero ML, Valiente R. Comparative bioavailability and pharmacokinetics of Dolotren retard and Dolotren. Rev Med Univer Nav 1992; 37: 7-16.
Raz I. Hussein Z. Samara E. Ben-David J. Comparative pharmacokinetic analysis of a novel sustained-release dosage form of diclofenac sodium in healthy subjects. Inter J Clin Pharmacol Ther Toxicol 1988; 26: 246-248.