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      Validación de un método para determinar la concentración sérica de voriconazol por HPLC/UV Translated title: Validation of a method to determine the serum concentration of voriconazole by HPLC/UV-Vis

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          Abstract

          RESUMEN Antecedentes: El incremento de infecciones fúngicas invasivas ha incrementado el uso de voriconazol como profilaxis y tratamiento, siendo necesario monitorizar sus concentraciones séricas. Objetivo: Estandarizar y validar un método sencillo, con alta eficacia y especificidad para la determinación de voriconazol. Material y métodos: Para la cuantificación de voriconazol se empleó un equipo de cromatografía líquida de alta resolución Shimadzu, acoplado a un detector ultravioleta-visible diodo-array, realizando la separación cromatográfica con una columna Brisa LC2 C18. Las condiciones cromatográficas que se definieron fueron: temperatura de la columna, 35ºC; longitud de onda, 256 nm; volumen de inyección, 20 µl; flujo, 1,5 ml/min; tiempo de análisis, 9 min, fase móvil agua con ácido fórmico 0,5 % / acetonitrilo 65/35. Previo a la inyección cromatográfica, las muestras sufrieron un tratamiento consistente en la precipitación de proteínas con acetonitrilo y posterior centrifugación, inyectándose el sobrenadante. Se utilizó el programa estadístico SPSS v. 25, considerando una p<0,05 como estadísticamente significativa. Resultados: El método puesto a punto es selectivo y lineal (r2 =1), con un coeficiente de variación ≤5 %. En cuanto a la exactitud y la precisión los coeficientes de variación fueron ≤ 5 %, cumpliendo así con los requisitos establecidos para el rango de concentraciones 0,1 µg/ml-10 µg/ml. Conclusiones: La selectividad y la sencillez del tratamiento de muestra hacen de él un método eficaz, rápido y sencillo para la determinación de voriconazol en suero y con sensibilidad mayor al de los inmunoensayos utilizados.

          Translated abstract

          SUMMARY Background: The high increase of invasive fungal infections has increased the use of voriconazole as prophylaxis and treatment, being necessary to monitor its serum concentrations. Objective: To standardize and validate a simple method with high efficacy and specificity for the determination of voriconazole. Method: For the quantification of voriconazole, a Shimadzu high performance liquid chromatography equipment was used, coupled to an ultraviolet-visible diode array detector, performing the chromatographic separation with a Brisa LC2 C18 column. The chromatographic conditions defined were: column temperature, 35ºC; wavelength, 256 nm; injection volume, 20 µl; flow rate, 1.5 ml/min; analysis time, 9 min, mobile phase water with formic acid 0.5 % / acetonitrile 65/35. Prior to chromatographic injection, the samples underwent a treatment consisting of protein precipitation with acetonitrile and subsequent centrifugation, and the supernatant was injected The SPSS v. 25 statistical program was used, considering a p<0.05 as statistically significant. Results: The method developed is selective and linear (r2 =1), with a coefficient of variation ≤ 5%. In terms of accuracy and precision, the coefficients of variation were ≤ 5 %, thus complying with the requirements established for the concentration range 0.1 µg/ml-10 µg/ml. Conclusion: The selectivity and the simplicity of the sample treatment make it an effective, fast and simple method for the determination of voriconazole in serum and with a higher sensitivity than the immunoassays used.

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          Antimicrobial therapeutic drug monitoring in critically ill adult patients: a Position Paper #

          Purpose This Position Paper aims to review and discuss the available data on therapeutic drug monitoring (TDM) of antibacterials, antifungals and antivirals in critically ill adult patients in the intensive care unit (ICU). This Position Paper also provides a practical guide on how TDM can be applied in routine clinical practice to improve therapeutic outcomes in critically ill adult patients. Methods Literature review and analysis were performed by Panel Members nominated by the endorsing organisations, European Society of Intensive Care Medicine (ESICM), Pharmacokinetic/Pharmacodynamic and Critically Ill Patient Study Groups of European Society of Clinical Microbiology and Infectious Diseases (ESCMID), International Association for Therapeutic Drug Monitoring and Clinical Toxicology (IATDMCT) and International Society of Antimicrobial Chemotherapy (ISAC). Panel members made recommendations for whether TDM should be applied clinically for different antimicrobials/classes. Results TDM-guided dosing has been shown to be clinically beneficial for aminoglycosides, voriconazole and ribavirin. For most common antibiotics and antifungals in the ICU, a clear therapeutic range has been established, and for these agents, routine TDM in critically ill patients appears meritorious. For the antivirals, research is needed to identify therapeutic targets and determine whether antiviral TDM is indeed meritorious in this patient population. The Panel Members recommend routine TDM to be performed for aminoglycosides, beta-lactam antibiotics, linezolid, teicoplanin, vancomycin and voriconazole in critically ill patients. Conclusion Although TDM should be the standard of care for most antimicrobials in every ICU, important barriers need to be addressed before routine TDM can be widely employed worldwide. Electronic supplementary material The online version of this article (10.1007/s00134-020-06050-1) contains supplementary material, which is available to authorized users.
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            Voriconazole: A Review of Population Pharmacokinetic Analyses

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              ICH Harmonised Tripartite Guideline. Validation of Analytical Procedures: Text and Methodology Q2(R1)

              (2005)
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                Author and article information

                Journal
                sm
                Sanidad Militar
                Sanid. Mil.
                Ministerio de Defensa (Madrid, Madrid, Spain )
                1887-8571
                September 2022
                : 78
                : 3
                : 146-150
                Affiliations
                [2] Madrid orgnameHospital Central de la Defensa Gómez Ulla orgdiv1Servicio de Farmacia Hospitalaria España
                [5] Madrid orgnameHospital Central de la Defensa Gómez Ulla orgdiv1Servicio de Farmacia Hospitalaria España
                [4] Salamanca Castilla y León orgnameUniversidad de Salamanca orgdiv1Facultad de Farmacia orgdiv2Área de farmacia y tecnología farmacéutica Spain
                [1] Madrid orgnameAcademia Central de la Defensa orgdiv1Escuela Militar de Sanidad (EMISAN) España
                [3] Madrid orgnameHospital Central de la Defensa Gómez Ulla orgdiv1Servicio de Farmacia Hospitalaria España
                Article
                S1887-85712022000300004 S1887-8571(22)07800300004
                10.4321/s1887-85712022000300004
                36ea32fc-6bad-4366-a73c-33f438368379

                http://creativecommons.org/licenses/by/4.0/

                History
                : 10 February 2022
                : 14 October 2021
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 11, Pages: 5
                Product

                SciELO Spain

                Categories
                Artículo Original

                infecciones fúngicas,Voriconazol,validation,HPLC,fungical infections,Voriconazole,validación

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