Artículos

Vanadium in vivo interaction with cefatoxime

Interacción in vivo del Vanadio con Cefotaxima

Madrigal, P.

Department of Inorganic Chemistry and Bioinorganic. School of Pharmacy. University Complutense. Madrid (Spain).

Doadrio, A.L.

Department of Inorganic Chemistry and Bioinorganic. School of Pharmacy. University Complutense. Madrid (Spain).

González, P.

Experimental Investigation Unit. Teaching Hospital San Carlos. Madrid (Spain).

Casas, J.

Department of Toxicology and Legal Medicine. School of Medicine. University Complutense. Madrid (Spain).

An Real Acad Farm An. R. Acad. Nac. Farm., 2006, 72: 599-609

Abstract

The presence of V(IV) in penicillin and cephalosporin solutions, has been shown previously, in vitro, to promote the degradation of the penicillins and cephalosporins studied to their corresponding penicilloic and cephalosporanic acids. HPLC studies provided an additional evidence for the reaction mechanism. The mechanisms of V(IV) catalysis involve a ternary complex. This work was undertaken to study the consequences of this degradation, in vivo, upper the pharmacokinetic and pharmacodynamic of Cefotaxime, being these consequences a lower concentracion of free cefotaxime in blood, liver, spleen, kidney, lung and heart when there was intoxication with vanadium. The differences more significant between rats with vanadium and without it were observed in liver, lung and kidney.

Keywords: Cefotaxime.—Vanadium.—HPLC.—Pharmacokinetic.— Pharmacodynamic.


Resumen

Anteriormente, en estudios por HPLC, hemos demostrado in vitro, que la presencia de V (IV) en las disoluciones de penicilinas y cefalosporinas, aumentan la degradación de éstas en sus correspondientes ácidos penicilóico y cefalosporánico. Los mecanismos de la catálisis de V (IV) involucran a un complejo ternario. En este trabajo se estudia las consecuencias de esta degradación, in vivo, de Cefotaxima, en sangre, hígado, bazo, riñón, pulmón y corazón, para ver las consecuencias de la intoxicación de vanadio. Las diferencias más importantes en ratas intoxicadas con vanadio se observaron en hígado, pulmón y riñón.

Palabras clave: Cefotaxima.—Vanadio.—HPLC.—Farmacocinética.—Farmacodinamia.