scholarly journals Sensitive Analysis of Idarubicin in Human Urine and Plasma by Liquid Chromatography with Fluorescence Detection: An Application in Drug Monitoring

Molecules ◽  
2020 ◽  
Vol 25 (24) ◽  
pp. 5799
Author(s):  
Olga Maliszewska ◽  
Natalia Treder ◽  
IIona Olędzka ◽  
Piotr Kowalski ◽  
Natalia Miękus ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Human Plasma ◽  
Fluorescence Detection ◽  
Limit Of Detection ◽  
Solid Phase ◽  
Biological Fluids ◽  
Internal Standard ◽  
Urine Samples ◽  
Human Plasma And Urine ◽  
Plasma And Urine Samples

A new approach for the sensitive, robust and rapid determination of idarubicin (IDA) in human plasma and urine samples based on liquid chromatography with fluorescence detection (LC-FL) was developed. Satisfactory chromatographic separation of the analyte after solid-phase extraction (SPE) was performed on a Discovery HS C18 analytical column using a mixture of acetonitrile and 0.1% formic acid in water as the mobile phase in isocratic mode. IDA and daunorubicin hydrochloride used as an internal standard (I.S.) were monitored at the excitation and emission wavelengths of 487 and 547 nm, respectively. The method was validated according to the FDA and ICH guidelines. The linearity was confirmed in the range of 0.1–50 ng/mL and 0.25–200 ng/mL, while the limit of detection (LOD) was 0.05 and 0.125 ng/mL in plasma and urine samples, respectively. The developed LC-FL method was successfully applied for drug determinations in human plasma and urine after oral administration of IDA at a dose of 10 mg to a patient with highly advanced alveolar rhabdomyosarcoma (RMA). Moreover, the potential exposure to IDA present in both fluids for healthcare workers and the caregivers of patients has been evaluated. The present LC-FL method can be a useful tool in pharmacokinetic and clinical investigations, in the monitoring of chemotherapy containing IDA, as well as for sensitive and reliable IDA quantitation in biological fluids.

scholarly journals Analysis of Phenothiazines in Human Body Fluids Using Disk Solid-Phase Extraction and Liquid Chromatography

2005 ◽  
Vol 88 (6) ◽  
pp. 1655-1660 ◽  
Author(s):  
Akemi Marumo ◽  
Takeshi Kumazawa ◽  
Xiao-Pen Lee ◽  
Koichiro Fujimaki ◽  
Ayako Kuriki ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Solid Phase Extraction ◽  
Human Plasma ◽  
Solid Phase ◽  
Urine Samples ◽  
Phase Extraction ◽  
Regression Equations ◽  
Phenothiazine Derivatives ◽  
Human Plasma And Urine ◽  
Plasma And Urine Samples

Abstract Seven phenothiazine derivatives, perazine, perphenazine, prochlorperazine, propericiazine, thioproperazine, trifluoperazine, and flupentixol, have been found to be extractable from human plasma and urine samples using disk solid-phase extraction (SPE) with an Empore C18 cartridge. Human plasma and urine (1 mL each) containing the 7 phenothiazine derivatives were mixed with 2 mL of 0.1M NaOH and 7 mL distilled water and then poured into the disk SPE cartridges. The drugs were eluted with 1 mL chloroform– acetonitrile (8 + 2) and determined by liquid chromatography with ammonium formate/formic acid–acetonitrile gradient elution. The detection was performed by ultraviolet absorption at 250 nm. The separation of the 7 phenothiazine derivatives from each other and from impurities was generally satisfactory using a SymmetryShield RP8 column (150 × 2.1 mm id, 3.5 μm particle size). The recoveries of the 7 phenothiazine derivatives spiked into plasma and urine samples were 64.0–89.9% and 65.1–92.1%, respectively. Regression equations for the 7 phenothiazine derivatives showed excellent linearity, with detection limits of 0.021–0.30 mg/mL for plasma and 0.017–0.30 μg/mL for urine. The within-day and day-to-day coefficients of variation for both samples were commonly below 9.0 and 14.9%, respectively.

Dispersive suspended-solidified floating organic droplet microextraction of nonsteroidal anti-inflammatory drugs: comparison of suspended droplet-based and dispersive-based liquid-phase microextraction methods

RSC Advances ◽  
2015 ◽  
Vol 5 (129) ◽  
pp. 106574-106588 ◽  
Author(s):  
Behruz Barfi ◽  
Alireza Asghari ◽  
Maryam Rajabi ◽  
Nasim Mirkhani
Keyword(s):  
Liquid Phase ◽  
Human Plasma ◽  
Urine Samples ◽  
Liquid Phase Microextraction ◽  
Human Plasma And Urine ◽  
Plasma And Urine Samples ◽  
Inflammatory Drugs ◽  
Anti Inflammatory ◽  
Suspended Droplet

A dispersive suspended-solidified floating organic droplet microextraction method was developed for determination of some nonsteroidal anti-inflammatory drugs in human plasma and urine samples.

scholarly journals Rapid and Sensitive Method for Quantitative Determination of Lopinavir and Ritonavir in Human Plasma by Liquid Chromatography- Tandem Mass Specrtometry

2009 ◽  
Vol 6 (1) ◽  
pp. 223-230 ◽  
Author(s):  
G. A. Temghare ◽  
S. S. Shetye ◽  
S. S. Joshi
Keyword(s):  
Liquid Chromatography ◽  
Human Plasma ◽  
Solid Phase ◽  
Internal Standard ◽  
Therapeutic Monitoring ◽  
Tandem Mass ◽  
Limit Of Quantification ◽  
Liquid Chromatography Tandem Mass ◽  
Sensitive Method

A rapid and sensitive liquid chromatography-mass spectrometric (LC-MS-MS) method for the simultaneous determination of lopinavir and ritonavir in human plasma using abacavir as internal standard has been developed and validated. Sample preparation of plasma involved solid phase extraction. Detection was performed using an Applied Biosystems Sciex API 2000 Mass spectrometer. The assay of lopinavir and ritonavir was linear over the range of 50 ng mL-1to 20000 ng mL-1and 20 ng mL-1to 3000 ng mL-1 respectively with a precision of <15% and accuracy in the range of 85-115%. The limit of quantification in plasma for lopinavir and ritonavir was 50 ng mL-1and 20 ng mL-1respectively. The described method has the advantage of being rapid and easy and it could be applied in therapeutic monitoring of these drugs in human plasma

scholarly journals MEASUREMENT OF CORTISOL IN HUMAN PLASMA AND URINE BY ULTRA PERFORMANCE LIQUID CHROMATOGRAPHY-TANDEM MASS SPECTROMETRY

2018 ◽  
Vol 11 (6) ◽  
pp. 199 ◽  
Author(s):  
Syed N Alvi ◽  
Muhammad M Hammami
Keyword(s):  
Human Plasma ◽  
Cortisol Level ◽  
Room Temperature ◽  
Urine Samples ◽  
Charge Ratio ◽  
Methyl Tert Butyl Ether ◽  
Tandem Mass ◽  
Human Plasma And Urine ◽  
Plasma And Urine Samples ◽  
Tandem Mass Spectrometric

Objective: The objective of this study is to develop and validate a simple, sensitive, specific, and rapid assay for quantification of clinically relevant cortisol level in human plasma and urine samples.Methods: Ultra performance liquid chromatographic-tandem mass spectrometric (UPLC-MS/MS) analysis was performed on Atlantis dC18 column (2.1×100 mm, 3 μm) with a mobile phase consisting of acetonitrile and 2 mM ammonium acetate (50:50, v: v) that was delivered at a flow rate of 0.3 ml/min. Tolperisone (2 ng) was used as an internal standard (IS). Biological samples were extracted with a mixture of hexane and methyl tert-butyl ether (8:2, v: v). The eluents were monitored using electrospray ionization in the positive ion mode with transition mass to charge ratio set at 363.1 → 121.0 and 246.0 → 97.9 for cortisol and IS, respectively. The method was validated according to international guidelines.Results: Retention times of cortisol and IS were about 1.4 and 2.3, respectively. Relationship between cortisol level and peak area ratio of cortisol to IS was linear (R2≥0.987) in the range of 2.5–400 ng/ml and 1.0–200 ng/ml in plasma and urine samples, respectively. Intra- and inter-day coefficient of variation and bias were ≤9.7% and ±11.1%, and ≤10.4% and ±11.5% for plasma and urine samples, respectively. Extraction recoveries were in 80–91% for cortisol plasma and 80–86% for cortisol in urine samples. Cortisol was ≥86% stable when stored at room temperature for 24 h or at −20°C for 24 weeks in plasma samples and ≥93% stable when stored at room temperature for 24 h or −20°C for 16 weeks in urine samples.Conclusion: We report a validated, clinically relevant, simple, and rapid UPLC-MS/MS assay of cortisol level in human plasma and urine.

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