Simple measurement of isepamicin, a new aminoglycoside antibiotic, in guinea pig and human plasma, using high-performance liquid chromatography with ultraviolet detection.
Isepamicin, the 1-N-(S-alpha-hydroxy-beta-aminopropionyl) derivative of gentamicin B, is a new aminoglycoside antibiotic, which not only has most of the properties of amikacin but also is effective against several amikacin-resistant strains of bacteria. The drug was assayed in guinea-pig and human plasma with a high-performance liquid chromatographic procedure using precolumn derivatization with 1-fluoro-2,4-dinitrobenzene and ultraviolet detection. Linearity was established over the range 0.5-40 micrograms/ml using 50 microliters of plasma. Accuracy has a mean relative error of less than 3% and precision a mean coefficient of variation of 5%. Isepamicin was determined without interference from plasma constituents or other drugs commonly prescribed during aminoglycoside therapy. This procedure correlates well with radioimmunoassay and can be used either in experimental studies or therapeutic monitoring of plasma levels.
Dionisotti
S
S
Research Laboratories, Schering-Plough S.p.A., Comazzo, Milan, Italy.
Bamonte
F
F
Scaglione
F
F
Ongini
E
E
D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D005839:Gentamicins / Q000097:blood*; D006168:Guinea Pigs; D006801:Humans; D011863:Radioimmunoassay; D015203:Reproducibility of Results; D014466:Ultraviolet Rays
D005839:Gentamicins; C016927:isepamicin