Paper spray mass spectrometry applied in the monitoring of a chemical system in dynamic chemical equilibrium: the redox process of methylene blue

2016 ◽  
Vol 30 (9) ◽  
pp. 1176-1180 ◽  
Author(s):  
Camila Cristina Almeida de Paula ◽  
Alberto Valadares ◽  
Marina Jurisch ◽  
Evandro Piccin ◽  
Rodinei Augusti
Keyword(s):  
Mass Spectrometry ◽  
Methylene Blue ◽  
Chemical Equilibrium ◽  
Redox Process ◽  
Chemical System ◽  
Paper Spray

Rapid Diagnosis of Parkinson’s Disease from Sebum using Paper Spray Ionisation Ion Mobility Mass Spectrometry

2020 ◽  
Author(s):  
Depanjan Sarkar ◽  
Drupad Trivedi ◽  
Eleanor Sinclair ◽  
Sze Hway Lim ◽  
Caitlin Walton-Doyle ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Ion Mobility ◽  
Neurodegenerative Disorder ◽  
Treatment Options ◽  
Ion Mobility Mass Spectrometry ◽  
Paper Spray ◽  
Molecular Features ◽  
Validation Set

Parkinson’s disease (PD) is the second most common neurodegenerative disorder for which identification of robust biomarkers to complement clinical PD diagnosis would accelerate treatment options and help to stratify disease progression. Here we demonstrate the use of paper spray ionisation coupled with ion mobility mass spectrometry (PSI IM-MS) to determine diagnostic molecular features of PD in sebum. PSI IM-MS was performed directly from skin swabs, collected from 34 people with PD and 30 matched control subjects as a training set and a further 91 samples from 5 different collection sites as a validation set. PSI IM-MS elucidates ~ 4200 features from each individual and we report two classes of lipids (namely phosphatidylcholine and cardiolipin) that differ significantly in the sebum of people with PD. Putative metabolite annotations are obtained using tandem mass spectrometry experiments combined with accurate mass measurements. Sample preparation and PSI IM-MS analysis and diagnosis can be performed ~5 minutes per sample offering a new route to for rapid and inexpensive confirmatory diagnosis of this disease.

scholarly journals The Alterations in Methylene Blue/Light-Treated Frozen Plasma Proteins Revealed by Proteomics

2021 ◽  
pp. 1-8
Author(s):  
Tiange Wu ◽  
Xiaoning Wang ◽  
Kai Ren ◽  
Xiaochen Huang ◽  
Jiankai Liu
Keyword(s):  
Mass Spectrometry ◽  
Methylene Blue ◽  
Western Blot ◽  
Blue Light ◽  
Differentially Expressed ◽  
Enzyme Linked Immunosorbent Assay ◽  
Differentially Expressed Protein ◽  
Significant Difference ◽  
Modified Proteins ◽  
Frozen Plasma

Introduction: The aim of this study was to investigate the modified proteins in methylene blue/light-treated frozen plasma (MB-FP) compared with fresh frozen plasma (FFP) in order to gain a better application of MB/light-treated plasma in clinic transfusion. Methods: MB-FP and FFP were collected from Changchun central blood station, and a trichloroacetic acid/acetone precipitation method was used to remove albumin for the enrichment of lower abundance proteins. The plasma protein in MB-FP and FFP were separated using two-dimensional gel electrophoresis (2-DE) and the differentially expressed protein spots were analyzed using mass spectrometry. Finally, the differentially expressed proteins were tested using Western blot and enzyme-linked immunosorbent assay (ELISA). Results: Approximately 14 differentially expressed protein spots were detected in the MB-FP, and FFP was chosen as the control. After 2-DE comparison analysis and mass spectrometry, 8 significantly differentially expressed protein spots were identified, corresponding to 6 different proteins, including complement C1r subcomponent (C1R), inter-alpha-trypsin inhibitor heavy chain H4 (ITI-H4), keratin, type II cytoskeletal 1 (KRT1), hemopexin (HPX), fibrinogen gamma chain (FGG), and transthyretin (TTR). Western blot showed no significant difference in the expression level of KRT1 between MB-FP and FFP (p > 0.05). Both Western blot and ELISA indicated that the level of HPX was significantly higher in FFP than in MB-FP (p < 0.05). Conclusion: This comparative proteomics study revealed that some significantly modified proteins occur in MB-FP, such as C1R, ITI-H4, KRT1, HPX, FGG, and TTR. Our findings provide more theoretical data for using MB-FP in transfusion medicine. However, the relevance of the data for the transfusion of methylene blue/light-treated plasma remains unclear. The exact modification of these proteins and the effects of these modified proteins on their functions and their effects in clinical plasma infusion need to be further studied.

scholarly journals Rapid Distinction and Semiquantitative Analysis of THC and CBD by Silver-Impregnated Paper Spray Mass Spectrometry

2021 ◽  
Author(s):  
Si Huang ◽  
Frank W. Claassen ◽  
Teris A. van Beek ◽  
Bo Chen ◽  
Jianguo Zeng ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Semiquantitative Analysis ◽  
Paper Spray

High-throughput determination of flavanone-O-glycosides in citrus beverages by paper spray tandem mass spectrometry

2021 ◽  
pp. 130060
Author(s):  
Fabio Mazzotti ◽  
Lucia Bartella ◽  
Ines Rosita Talarico ◽  
Anna Napoli ◽  
Leonardo Di Donna
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
High Throughput ◽  
Tandem Mass ◽  
Paper Spray

scholarly journals Simultaneous quantitation of five triazole anti-fungal agents by paper spray-mass spectrometry

2020 ◽  
Vol 58 (5) ◽  
pp. 836-846 ◽  
Author(s):  
Christine L. Skaggs ◽  
Greta J. Ren ◽  
El Taher M. Elgierari ◽  
Lillian R. Sturmer ◽  
Run Z. Shi ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Therapeutic Drug ◽  
Reference Laboratory ◽  
Triple Quadrupole Mass Spectrometer ◽  
Limit Of Quantification ◽  
Paper Spray ◽  
Calibration Curves ◽  
Drug Concentrations ◽  
Limit Of Quantitation ◽  
Anti Fungal

AbstractBackgroundInvasive fungal disease is a life-threatening condition that can be challenging to treat due to pathogen resistance, drug toxicity, and therapeutic failure secondary to suboptimal drug concentrations. Frequent therapeutic drug monitoring (TDM) is required for some anti-fungal agents to overcome these issues. Unfortunately, TDM at the institutional level is difficult, and samples are often sent to a commercial reference laboratory for analysis. To address this gap, the first paper spray-mass spectrometry assay for the simultaneous quantitation of five triazoles was developed.MethodsCalibration curves for fluconazole, posaconazole, itraconazole, hydroxyitraconazole, and voriconazole were created utilizing plasma-based calibrants and four stable isotopic internal standards. No sample preparation was needed. Plasma samples were spotted on a paper substrate in pre-manufactured plastic cartridges, and the dried plasma spots were analyzed directly utilizing paper spray-mass spectrometry (paper spray MS/MS). All experiments were performed on a Thermo Scientific TSQ Vantage triple quadrupole mass spectrometer.ResultsThe calibration curves for the five anti-fungal agents showed good linearity (R2 = 0.98–1.00). The measured assay ranges (lower limit of quantification [LLOQ]–upper limit of quantitation [ULOQ]) for fluconazole, posaconazole, itraconazole, hydroxyitraconazole, and voriconazole were 0.5–50 μg/mL, 0.1–10 μg/mL, 0.1–10 μg/mL, 0.1–10 μg/mL, and 0.1–10 μg/mL, respectively. The inter- and intra-day accuracy and precision were less than 25% over the respective ranges.ConclusionsWe developed the first rapid paper spray-MS/MS assay for simultaneous quantitation of five triazole anti-fungal agents in plasma. The method may be a powerful tool for near-point-of-care TDM aimed at improving patient care by reducing the turnaround time and for use in clinical research.

scholarly journals Paper spray mass spectrometry – A potential complementary technique for the detection of polar compounds in sports drug testing

2020 ◽  
Vol 12 (11-12) ◽  
pp. 1658-1665 ◽  
Author(s):  
Christian Görgens ◽  
Katherine Walker ◽  
Cornelia Boeser ◽  
Neloni Wijeratne ◽  
Claudia Martins ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Drug Testing ◽  
Polar Compounds ◽  
Paper Spray ◽  
Complementary Technique ◽  
Sports Drug Testing

High throughput paper spray mass spectrometry analysis

2013 ◽  
Vol 420 ◽  
pp. 28-33 ◽  
Author(s):  
Luhou Shen ◽  
Johnny Zhang ◽  
Qian Yang ◽  
Nicholas E. Manicke ◽  
Zheng Ouyang
Keyword(s):  
Mass Spectrometry ◽  
High Throughput ◽  
Mass Spectrometry Analysis ◽  
Paper Spray ◽  
Spectrometry Analysis

Drug screening method development for paper spray coupled to a triple quadrupole mass spectrometer

2017 ◽  
Vol 9 (34) ◽  
pp. 5037-5043 ◽  
Author(s):  
Rachel Jett ◽  
Christine Skaggs ◽  
Nicholas E. Manicke
Keyword(s):  
Mass Spectrometry ◽  
Drug Screening ◽  
Method Development ◽  
Screening Method ◽  
Direct Analysis ◽  
Triple Quadrupole ◽  
Analysis Method ◽  
Quadrupole Mass ◽  
Triple Quadrupole Mass Spectrometer ◽  
Paper Spray

Paper spray mass spectrometry is a direct analysis method in which compounds are extracted and ionized from biofluids dried on paper.

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