Simultaneous determination of six alkaloids in blood and urine using a hydrophilic interaction liquid chromatography method coupled with electrospray ionization tandem mass spectrometry.
Summary of "Simultaneous determination of six alkaloids in blood and urine using a hydrophilic interaction liquid chromatography method coupled with electrospray ionization tandem mass spectrometry."
A method was developed for the simultaneous determination of six toxic alkaloids (aconitine, hypaconitine, gelsemine, raceanisodamine, strychnine, brucine) in blood and urine by hydrophilic interaction liquid chromatography (HILIC) coupled with electrospray tandem mass spectrometry. Ephedrine was selected as the internal standard. Samples were extracted and cleaned up by solid-phase extraction (SPE) using Oasis MCX cartridges. Separation parameters such as organic modifier, buffer pH, and concentration of buffer salt were investigated. Gradient separation and analysis were achieved for six alkaloids on a 3-mum Atlantis HILIC column using a mobile phase consisting of 30 mM ammonium formate and acetonitrile at pH 3. Two multiple reaction monitoring (MRM) transitions for each substance were monitored to provide sufficient identification of alkaloid. The retention mechanisms were explored in the method development. Validation included assessment of linearity, limit of quantification, accuracy, and precision. Bias was less than 15.1% and precision was better than 8.3% for both blood and urine samples. A total of 54 clinical samples were examined by this validated method.
Centre for Disease Prevention and Control of Guangdong, Guangzhou, 510300, China, email@example.com.
This article was published in the following journal.
Name: Analytical and bioanalytical chemistry
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20665006
- DOI: http://dx.doi.org/10.1007/s00216-010-4031-y
A highly specific liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed for simultaneous determination of urinary N (3)-methyladenine (N (3)-MeA), N (3)-ethyladenine (N (3)-Et...
This publication describes a method for the determination of total bisphenol A (BPA and conjugated BPA) following enzyme hydrolysis and is intended as a companion to our previously developed analytica...
A linear sweep voltammetric method is used for direct simultaneous determination of L-cysteine and L-cysteine disulfide (cystine) based on carbon ionic liquid electrode. With carbon ionic liquid elect...
A rapid and sensitive liquid chromatography/tandem mass spectrometric (LC-MS/MS) method for simultaneous quantification of fentanyl (F), norfentanyl (NF), despropionylfentanyl (DPF), and hydroxynorfen...
Pregabalin is a drug for treating epilepsy, anxiety disorders and neuropathic pain. Cases of poisoning are rare, though some have been fatal. Concentrations of pregabalin in postmortem human samples a...
The purpose of this study is to evaluate the safety and efficacy of Hydrophilic Acrylic Intraocular Lens after cataract surgery
Intermittent catheterization is a well-known method used for emptying the bladder. The objective of this study is to compare the residual urine after intermittent catheterisation with 2 di...
In metastatic breast cancer (MBC) patients who have already received anthracyclines, taxanes, antimetabolites and vinca-alkaloids and have developed drug resistance to these drugs, therape...
Continuous monitoring of the skin tissue glucose concentration on two different study days using glucose sensors that work on the principle of impedance spectroscopy, with systematic alter...
Male intermittent catheters (ICs) range from 340-500 mm long, with the European standard minimum length being 360 mm for a catheter without a balloon and 275 mm for one with a balloon. Thi...
Medical and Biotech [MESH] Definitions
The thermodynamic interaction between a substance and WATER.
Simultaneous communication of conflicting messages in which the response to either message evokes rejection or disapproval. (APA, Thesaurus of Psychological Index Terms, 8th ed.)
The simultaneous, or near simultaneous, transference of heart and lungs from one human or animal to another.
Pathological processes involving the integrity of blood circulation. Hemostasis depends on the integrity of BLOOD VESSELS, blood fluidity, and BLOOD COAGULATION. Majority of the hemostatic disorders are caused by disruption of the normal interaction between the VASCULAR ENDOTHELIUM, the plasma proteins (including BLOOD COAGULATION FACTORS), and PLATELETS.
A group of dominantly and independently inherited antigens associated with the ABO blood factors. They are glycolipids present in plasma and secretions that may adhere to the erythrocytes. The phenotype Le(b) is the result of the interaction of the Le gene Le(a) with the genes for the ABO blood groups.