scholarly journals Analysis of Acrylamide in Dried Blood Spots of Lung Cancer Patients by Ultrahigh-Performance Liquid Chromatography Tandem Mass Spectrometry

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Yahdiana Harahap ◽  
Camilla Elysia ◽  
Zenshiny Starlin ◽  
Achmad Mulawarman Jayusman
Keyword(s):  
Mass Spectrometry ◽  
Lung Cancer ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
Cancer Patients ◽  
Tandem Mass ◽  
Lung Cancer Patients ◽  
Chromatography Tandem Mass Spectrometry ◽  
Significant Difference ◽  
Liquid Chromatography Tandem Mass

Acrylamide (AA) is a carcinogenic substance found in food, cigarette smoke and in an environment exposed to acrylamide. This study aims to analyze AA levels in dried blood spot (DBS) samples of lung cancer patients with smoking record, without smoking record, and also in the negative blank. Analysis of AA levels was determined by liquid chromatography tandem mass spectrometry (LC-MS/MS) and DBS extraction using protein precipitation techniques. Mass detection was done using positive electron spray ionization (ESI) and multiple reaction monitoring (MRM) type with m/z values of 71.99 > 55.23 for acrylamide and m/z 260.16 > 116.04 for propranolol as the internal standard. AA levels in lung cancer patients with smoking record is in the range of 4.670 μg/mL to 11.986 μg/mL. AA levels in lung cancer patients without smoking record is in the range of 2.041 μg/mL to 12.702 μg/mL. Data on AA levels on negative blanks is in the range of 2.72 μg/mL to 3.51 μg/mL. The results of the independent sample t-test (p>0.05) showed that AA levels in patients with smoking record and those without smoking record did not differ significantly. Then, the Mann-Whitney test was performed between the lung cancer group and the negative blank group and a significant difference was found between the two groups (p<0.05).

scholarly journals Pharmacokinetics and Tissue Distribution of Combined Triptolide and Paeoniflorin Regimen for Percutaneous Administration in Rats Assessed by Liquid Chromatography-Tandem Mass Spectrometry

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Yong-mei Guan ◽  
Qian Shen ◽  
Liang-fei He ◽  
Li-mei Chen ◽  
Zhenzhong Zang ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
Female Rats ◽  
Tandem Mass ◽  
Male And Female ◽  
Chromatography Tandem Mass Spectrometry ◽  
Significant Difference ◽  
Liquid Chromatography Tandem Mass ◽  
Percutaneous Administration

Triptolide (TP) has shown potential in rheumatoid arthritis (RA) treatment, but the narrow therapeutic window limits its clinical application. In clinical practice, the compatibility of Tripterygium wilfordii and Paeonia lactiflora is often used to attenuate the toxicity of TP, but its compatibility mechanism has not been fully elucidated. The aim of this study was to investigate the pharmacokinetics and tissue distribution of a combined regimen of TP and paeoniflorin (PF) after transdermal administration in male and female Sprague Dawley (SD) rats via a rapid and sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method. The results showed that after percutaneous administration of TP and PF, there was no significant difference in AUC (0-t) (area under the curve) of TP, the peak concentration decreased by 58.17%, and the peak time was delayed. The AUC (0-t) of PF increased significantly ( P  < 0.01), the peak-reaching concentration and AUC (0-∞) increased, and the half-life and average retention time were shortened, indicating that TP absorption in rats may be delayed. After percutaneous administration of TP and PF, the content of TP in the heart, liver, spleen, lungs, and kidneys of male rats significantly decreased at 2 h ( P  < 0.05) and the drug concentration in the liver tissues significantly decreased at 2 h, 4 h, and 8 h ( P  < 0.05). The TP content in the spleen of female rats significantly decreased at 2 h and 4 h ( P  < 0.05) and also decreased in other tissues, but not significantly. After percutaneous administration of TP and PF, the PF content in the heart, liver, spleen, lungs, and kidneys of male and female rats had no significant difference. However, after percutaneous administration of TP and PF, the TP concentration in the skin increased, suggesting that the amount of TP retained in the skin increased, thereby reducing its content in blood and tissues, producing a reduction in toxicity effect.

scholarly journals Quantification of Photocyanine in Human Serum by High-Performance Liquid Chromatography-Tandem Mass Spectrometry and Its Application in a Pharmacokinetic Study

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Bing-Tian Bi ◽  
Ben-Yan Zou ◽  
Li-Ting Deng ◽  
Jing Zhan ◽  
Hai Liao ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
Cancer Patients ◽  
Pharmacokinetic Study ◽  
High Performance ◽  
Tandem Mass ◽  
Chromatography Tandem Mass Spectrometry ◽  
Liquid Chromatography Tandem Mass

Photocyanine is a novel anticancer drug. Its pharmacokinetic study in cancer patients is therefore very important for choosing doses, and dosing intervals in clinical application. A rapid, selective and sensitive high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method was developed and validated for the determination of photocyanine in patient serum. Sample preparation involved one-step protein precipitation by adding methanol and N,N-dimethyl formamide to 0.1 mL serum. The detection was performed on a triple quadrupole tandem mass spectrometer operating in multiple reaction-monitoring (MRM) mode. Each sample was chromatographed within 7 min. Linear calibration curves were obtained for photocyanine at a concentration range of 20–2000 ng/mL (r>0.995), with the lower limit of quantification (LLOQ) being 20 ng/mL. The intrabatch accuracy ranged from 101.98% to 107.54%, and the interbatch accuracy varied from 100.52% to 105.62%. Stability tests showed that photocyanine was stable throughout the analytical procedure. This study is the first to utilize the HPLC-MS/MS method for the pharmacokinetic study of photocyanine in six cancer patients who had received a single dose of photocyanine (0.1 mg/kg) administered intravenously.

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