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Oxaliplatin is a platinum compound that is frequently prescribed for the chemotherapeutic treatment of colorectal cancer. In tumor cells, cellular uptake is the first step of oxaliplatin action. Cellular accumulation of oxaliplatin is considered to play an important role in anti-cancer efficacy. However, limited information about cellular accumulation of intact oxaliplatin is available. In this study, a sensitive hydrophilic interaction liquid chromatography-tandem mass spectrometry (HILIC-MS/MS) approach for the quantification of oxaliplatin in cells was developed and validated. The method allowed for a rapid and simple determination of intact oxaliplatin in cell lysate. The retention time of oxaliplatin was 3.04 min, which was achieved by applying a chromatographic gradient elution of 5 min. The lower limit of quantification (LLOQ) was 2 ng/mL and the analytical range of oxaliplatin was linear between 2-200 ng/mL. The intra-day precision and inter-day precision (RSD (relative standard deviation)) ranged from 0.52 to 7.89%, and the accuracy (RE (relative error)) was within ± 4.5%. Matrix effects and recovery were acceptable. The method was successfully used for the determination of intact oxaliplatin uptake by HCT-116 colon cancer cells. Thus, our findings may prospectively support a celluar pharmacokinetic study and low concentration measurement of intact oxaliplatin in the clinic.
This article was published in the following journal.
Name: Journal of pharmaceutical and biomedical analysis
Quantification of ondansetron, granisetron and tropisetron in goat plasma using hydrophilic interaction liquid chromatography-solid phase extraction coupled with hydrophilic interaction liquid chromatography-triple quadrupole tandem mass spectrometry.
An assay method to quantify ondansetron (OND), granisetron (GRA) and tropisetron (TRO) in goat plasma has been successfully developed and validated. This method procedure for the analysis of OND, GRA ...
Information about the intracellular concentration of dNTPs and NTPs is important for studies of the mechanisms of DNA replication and repair, but the low concentration of dNTPs and their chemical simi...
Teicoplanin is a glycopeptide antibiotic that has become increasingly popular with the spread of methicillin-resistant Staphylococcus aureus. The aim of the study was to develop and validate an ultra-...
Fifty-six cocoa bean samples from different origins and status of fermentation were analyzed by a validated hydrophilic interaction liquid chromatography-electrospray ionization-time of flight-mass sp...
Simultaneous determination of cyclosporine and tacrolimus in human whole blood by ultra-high performance liquid chromatography tandem mass spectrometry and comparison with a chemiluminescence microparticle immunoassay.
Overestimation of immunoassays for cyclosporine (CsA) and tacrolimus (TAC) analysis in human whole blood is a problem. The liquid chromatography tandem mass spectrometry is recommended as a golden met...
The findings of previous experiments suggested that polyunsaturated fatty acids(PUFAs) has been linked to anti-hyperlipidemia, and reducing the risk of cardiovascular disease.This is a ran...
This trial is conducted to assess the performance and handling of the in vitro diagnostic (IVD) device for oral direct factor Xa and thrombin inhibitors from urine samples of patients on t...
The present study assessed serum 25(OH)D in a cohort of 74235 outpatients by liquid-chromatography-tandem-mass-spectrometry (LC-MS/MS). The investigators studied the distribution of serum...
The purpose of this study is to evaluate the basis for the reported good effects of antioxidant supplementation. A blood test using Mass Spectrometry will measure DNA damage which is expec...
Oxidative stress is an unavoidable event during cardiac surgery. Isoprostanes have been demonstrated to be a reliable biomarker for the evaluation of oxidative stress in vivo.The aims of t...
A mass spectrometry technique using two (MS/MS) or more mass analyzers. With two in tandem, the precursor ions are mass-selected by a first mass analyzer, and focused into a collision region where they are then fragmented into product ions which are then characterized by a second mass analyzer. A variety of techniques are used to separate the compounds, ionize them, and introduce them to the first mass analyzer. For example, for in GC-MS/MS, GAS CHROMATOGRAPHY-MASS SPECTROMETRY is involved in separating relatively small compounds by GAS CHROMATOGRAPHY prior to injecting them into an ionization chamber for the mass selection.
A microanalytical technique combining mass spectrometry and gas chromatography for the qualitative as well as quantitative determinations of compounds.
An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.
A method of separation of two or more substances by repeated distribution between two immiscible liquid phases that move past each other in opposite directions. It is a form of liquid-liquid chromatography. (Stedman, 25th ed)
A mass spectrometry technique used for analysis of nonvolatile compounds such as proteins and macromolecules. The technique involves preparing electrically charged droplets from analyte molecules dissolved in solvent. The electrically charged droplets enter a vacuum chamber where the solvent is evaporated. Evaporation of solvent reduces the droplet size, thereby increasing the coulombic repulsion within the droplet. As the charged droplets get smaller, the excess charge within them causes them to disintegrate and release analyte molecules. The volatilized analyte molecules are then analyzed by mass spectrometry.
Colon or Colorectal cancer is the growth of malignant polyps on the colon, bowel, anus and rectum. Growths in these locations can be benign, and removed by colonoscopy, but they have a risk of becoming malignant. About 10 per cent of bowel cancer...
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