1
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Zhao D, Rustum AM. Determination of Clorsulon and its related substances in commercial bulk drug substance batches by a rapid ion-pair UPLC method. J Pharm Biomed Anal 2024; 239:115896. [PMID: 38091817 DOI: 10.1016/j.jpba.2023.115896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 11/15/2023] [Accepted: 11/30/2023] [Indexed: 01/05/2024]
Abstract
Clorsulon is a potent anthelmintic agent and is widely used for the treatment and control of parasites including adult liver flukes in cattle and sheep. A rapid ion-paired reversed phase ultraperformance liquid chromatography (IP-UPLC) method has been developed and validated for determination of Clorsulon and its related substances in bulk drug substance batches of Clorsulon with a short octadecyl column. Analytes were eluted by a gradient elution on a Acquity UPLC® BEH C18 column (50 mm × 2.1 mm i.d., 1.7 µm particle size). Column temperature was maintained at 55 °C and all analytes were monitored by UV detection at 268 nm. Mobile phase-A constitutes 3 mM tetrabutylammonium hydroxide in H2O and mobile phase-B constitutes acetonitrile/methanol (50/50, v/v), respectively. All analytes of interest were adequately separated within 5 min. The analytes were quantitated against an external reference standard of Clorsulon. The chemical structures of degradation products of Clorsulon were proposed based on two-dimensional UPLC-MS data. The IP-UPLC method has been successfully validated and demonstrated to be accurate, sensitive, robust, and specific.
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Affiliation(s)
- Daoli Zhao
- Global Pharmaceutical Technical Support (GPTS), Boehringer Ingelheim Animal Health USA Inc., North Brunswick, NJ 08902, USA.
| | - Abu M Rustum
- Global Pharmaceutical Technical Support (GPTS), Boehringer Ingelheim Animal Health USA Inc., North Brunswick, NJ 08902, USA
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2
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Xie S, Bu C, LaCava J, Chi L. MsPHep: An online application for low molecular weight heparin rapid characterization based on liquid chromatography-tandem mass spectrometry. J Chromatogr A 2023; 1705:464179. [PMID: 37419018 DOI: 10.1016/j.chroma.2023.464179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 06/16/2023] [Accepted: 06/24/2023] [Indexed: 07/09/2023]
Abstract
Low-molecular-weight heparins (LMWHs) are important anticoagulants widely used in clinic. Since they are comprised of complex and heterogenous glycan chains, liquid chromatography-tandem mass spectrometry (LC-MS) is commonly used for structural analysis and quality control of LMWHs to ensure their safety and efficacy. Yet, the structural complexity arising from the parent heparin macromolecules, as well as the different depolymerization methods used for preparing LMWHs, makes processing and assigning the LC-MS data of LWMHs very tedious and challenging. We therefore developed, and here report, an open-source and easy-to-use web application, MsPHep, to facilitate the LMWH analysis based on LC-MS data. MsPHep is compatible with various LMWHs and chromatographic separation methods. With the HepQual function, MsPHep is capable of annotating both the LMWH compound and its isotopic distribution from mass spectra. Moreover, the HepQuant function enables automatic quantification of LMWH compositions without prior knowledge or any database generation. To demonstrate the reliability and system stability of MsPHep, we tested various types of LMWHs that were analyzed with different chromatographic methods coupled to MS. The results show that MsPHep has its own advantages compared to another public tool GlycReSoft for LMWH analysis, and it is available online under an open-source license at https://ngrc-glycan.shinyapps.io/MsPHep.
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Affiliation(s)
- Shaoshuai Xie
- National Glycoengineering Research Center, Shandong University, Qingdao, Shandong 266237, China; European Research Institute for the Biology of Ageing, University Medical Centre Groningen, Groningen 9700AD, Netherlands
| | - Changkai Bu
- National Glycoengineering Research Center, Shandong University, Qingdao, Shandong 266237, China
| | - John LaCava
- European Research Institute for the Biology of Ageing, University Medical Centre Groningen, Groningen 9700AD, Netherlands; Laboratory of Cellular and Structural Biology, The Rockefeller University, New York, NY 10065, USA
| | - Lianli Chi
- National Glycoengineering Research Center, Shandong University, Qingdao, Shandong 266237, China.
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3
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Yan N, Song F, Ouyang Y, Li D, Tian H, Yi L, Linhardt RJ, Zhang Z. Glycan Mapping of Low-Molecular-Weight Heparin Using Mass Spectral Correction Based on Chromatography Fitting with “Glycomapping” Software. Anal Chem 2022; 94:13000-13009. [DOI: 10.1021/acs.analchem.2c01579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Na Yan
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Feifan Song
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Yilan Ouyang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Duxin Li
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - He Tian
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Lin Yi
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
| | - Robert J. Linhardt
- Departments of Chemistry and Chemical Biology, Biology, Chemical and Biological Engineering, and Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180, United States
| | - Zhenqing Zhang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu 215021, China
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4
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Liu JX, Wu MX, Ding SN. Aggregation-Induced Emission Enhancement of CdSe QDs by Protamine and its Application to Sensitively and Selectively Detect Heparin. CURR ANAL CHEM 2019. [DOI: 10.2174/1573411014666180330160743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Heparin, it is commercially used as an anticoagulant in surgical procedures for
the prevention of blood clotting. However, overdose and prolonged use of heparin often induce potentially
fatal bleeding complication. So, it is of crucial importance to monitor closely heparin levels for
the sake of health. In this work, a sensitive fluorescence sensing platform to detect heparin was set up
based on MPA-CdSe QDs (quantum dots) and protamine enhanced fluorescent system.
Methods:
The image of CdSe QDs was taken on a JEM-2100 transmission electron microscope (JEOL
Ltd.). The fluorescence spectrum was recorded on a FluoroMax-4 fluorescence spectrophotometer
(Horiba, USA). UV–vis absorption spectrum was recorded using a Shimadzu UV-2450 Spectrophotometer
(Tokyo, Japan). A vortex mixer IKA MS3 digital was selected to mix the solution.
Results:
Under optimized conditions, the linear response to detect heparin ranges from 0.06 to 14 µg
mL-1 with a detection limit of 8 ng mL-1. The approach showed a highly selective response to heparin in
the presence of 16 interfered substances.
Conclusion:
A simple method for the detection of heparin was developed based on MPA-CdSe QDs
and protamine enhanced fluorescent system. The electrostatic effect between MPA-CdSe QDs and protamine
resulted in strong fluorescence enhancement from the MPA-CdSe QDs. Moreover, the addition
of heparin could cause a significant fluorescence decrease due to the strong affinity of protamine and
heparin. Under optimal conditions, this method displayed a low detection limit and good selectivity
over other substances.
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Affiliation(s)
- Jin-Xia Liu
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Mei-Xia Wu
- Lianshui People's Hospital, Jiangsu 223400, China
| | - Shou-Nian Ding
- Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
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5
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Sadowski R, Gadzała-Kopciuch R, Buszewski B. Recent Developments in the Separation of Low Molecular Weight Heparin Anticoagulants. Curr Med Chem 2019; 26:166-176. [PMID: 28982317 DOI: 10.2174/0929867324666171005114150] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 08/11/2016] [Accepted: 09/05/2017] [Indexed: 11/22/2022]
Abstract
The general function of anticoagulants is to prevent blood clotting and growing of the existing clots in blood vessels. In recent years, there has been a significant improvement in developing methods of prevention as well as pharmacologic and surgical treatment of thrombosis. For over the last two decades, low molecular weight heparins (LMWHs) have found their application in the antithrombotic diseases treatment. These types of drugs are widely used in clinical therapy. Despite the biological and medical importance of LMWHs, they have not been completely characterized in terms of their chemical structure. Due to both, the structural complexity of these anticoagulants and the presence of impurities, their structural characterization requires the employment of advanced analytical techniques. Since separation techniques play the key role in these endeavors, this review will focus on the presentation of recent developments in the separation of LMWH anticoagulants.
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Affiliation(s)
- Radosław Sadowski
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Torun, Poland.,Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Toruń, Poland
| | - Renata Gadzała-Kopciuch
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Torun, Poland.,Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Toruń, Poland
| | - Bogusław Buszewski
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Torun, Poland.,Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Toruń, Poland
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6
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Patel RP, Shastri MD, Ming LC, Zaidi STR, Peterson GM. Therapeutic Potential of Enoxaparin in Lichen Planus: Exploring Reasons for Inconsistent Reports. Front Pharmacol 2018; 9:586. [PMID: 29922163 PMCID: PMC5996198 DOI: 10.3389/fphar.2018.00586] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 05/16/2018] [Indexed: 12/16/2022] Open
Abstract
Lichen planus (LP) is an uncommon mucocutaneous inflammatory condition, that is immunologically mediated, typically pruritic and often recurs. The currently advocated therapies are either not highly effective or associated with severe side effects. Enoxaparin, a widely used anticoagulant, is composed of both anticoagulant and non-anticoagulant fragments. Enoxaparin is reported to have anti-inflammatory properties and it was found to be effective in LP. However, the results from clinical studies have varied substantially and, therefore, the clinical role of enoxaparin in LP remains uncertain. This review focuses on potential reasons for the reported inconsistent outcomes, as well as proposing solutions; these include identifying batch-to-batch inconsistency in the composition of enoxaparin. The potential therapeutic value of enoxaparin in LP must be explored using well-designed clinical trials, combined with experimental studies that focus on identifying the anti-inflammatory fragments of enoxaparin and elucidating the mechanism of action of these non-anticoagulant fragments.
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Affiliation(s)
- Rahul P. Patel
- Pharmacy, School of Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Madhur D. Shastri
- School of Health Sciences, University of Tasmania, Launceston, TAS, Australia
| | - Long Chiau Ming
- Pharmacy, School of Medicine, University of Tasmania, Hobart, TAS, Australia
- School of Pharmacy, KPJ Healthcare University College, Nilai, Malaysia
- Vector-borne Diseases Research Group (VERDI), Pharmaceutical and Life Sciences CoRe, Universiti Teknologi MARA, Shah Alam, Malaysia
| | | | - Gregory M. Peterson
- Pharmacy, School of Medicine, University of Tasmania, Hobart, TAS, Australia
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7
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Antithrombin III-Binding Site Analysis of Low-Molecular-Weight Heparin Fractions. J Pharm Sci 2018; 107:1290-1295. [DOI: 10.1016/j.xphs.2018.01.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 01/08/2018] [Indexed: 11/19/2022]
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8
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Kandel S, Zaidi STR, Wanandy ST, Ming LC, Castelino RL, Sud K, Patel RP. Stability of Ceftazidime and Heparin in Four Different Types of Peritoneal Dialysis Solutions. ARCH ESP UROL 2017; 38:49-56. [PMID: 29162678 DOI: 10.3747/pdi.2017.00115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/28/2017] [Indexed: 11/15/2022]
Abstract
BACKGROUND Intraperitoneal (IP) administration of ceftazidime is recommended for the treatment of peritoneal dialysis-associated peritonitis (PDAP) from Pseudomonas. Patients with PDAP may also need IP heparin to overcome problems with drainage of turbid peritoneal dialysis (PD) fluids and blockage of catheters with fibrin. Physico-chemical stability of ceftazidime and heparin, and biological stability of heparin in many types of PD solutions is unknown. Therefore, we investigated the stability of ceftazidime and heparin in 4 types of PD solutions. METHODS A total of 12 PD bags (3 for each type of solution) containing ceftazidime and heparin were prepared and stored at 4°C for 120 hours, and then at 25°C for 6 hours, and finally at 37°C for 12 hours. An aliquot was withdrawn after predefined time points and analyzed for the concentration of ceftazidime and heparin using high-performance liquid-chromatography (HPLC). Samples were assessed for pH, color changes, particle content, and anticoagulant activity of heparin. RESULTS Ceftazidime and heparin retained more than 91% of their initial concentration when stored at 4°C for 120 hours followed by storage at 25°C for 6 hours and then at 37°C for 12 hours. Heparin retained more than 95% of its initial activity throughout the study period. Particle formation was not detected at any time under the storage conditions. The pH and color remained essentially unchanged throughout the study. CONCLUSIONS Ceftazidime-heparin admixture retains its stability over long periods of storage at different temperatures, allowing its potential use for PDAP treatment in outpatient and remote settings.
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Affiliation(s)
- Surendra Kandel
- Pharmacy, School of Medicine, University of Tasmania, Hobart, Tasmania, Australia
| | - Syed Tabish R Zaidi
- Pharmacy, School of Medicine, University of Tasmania, Hobart, Tasmania, Australia
| | - S Troy Wanandy
- Pharmacy, School of Medicine, University of Tasmania, Hobart, Tasmania, Australia.,Department of Pharmacy, Royal Hobart Hospital, Hobart, Tasmania, Australia
| | - Long C Ming
- Pharmacy, School of Medicine, University of Tasmania, Hobart, Tasmania, Australia.,School of Pharmacy, KPJ Healthcare University College, Nilai, Negeri Sembilan, Malaysia
| | - Ronald L Castelino
- School of Nursing, University of Sydney, New South Wales, Australia.,Peritoneal Dialysis Unit, Regional Dialysis Centre, Blacktown Hospital, Blacktown, New South Wales, Australia
| | - Kamal Sud
- Peritoneal Dialysis Unit, Regional Dialysis Centre, Blacktown Hospital, Blacktown, New South Wales, Australia.,Department of Renal Medicine, Nepean Hospital and Nepean Clinical School, University of Sydney, Kingswood, New South Wales, Australia
| | - Rahul P Patel
- Pharmacy, School of Medicine, University of Tasmania, Hobart, Tasmania, Australia
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9
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Liu X, St Ange K, Wang X, Lin L, Zhang F, Chi L, Linhardt RJ. Parent heparin and daughter LMW heparin correlation analysis using LC-MS and NMR. Anal Chim Acta 2017; 961:91-99. [DOI: 10.1016/j.aca.2017.01.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 01/11/2017] [Accepted: 01/13/2017] [Indexed: 11/16/2022]
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10
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Liu X, St. Ange K, Lin L, Zhang F, Chi L, Linhardt RJ. Top-down and bottom-up analysis of commercial enoxaparins. J Chromatogr A 2017; 1480:32-40. [DOI: 10.1016/j.chroma.2016.12.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 11/14/2016] [Accepted: 12/11/2016] [Indexed: 10/20/2022]
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11
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Li J, Cheng M, Li MJ. A luminescent and colorimetric probe based on the functionalization of gold nanoparticles by ruthenium(ii) complexes for heparin detection. Analyst 2017; 142:3733-3739. [DOI: 10.1039/c7an01253e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A colorimetric and luminescent bifunctional Ru(ii) complex-modified gold nanoprobe for the sensing of heparin in Tris-HCl buffer (pH 7.4) and 1% fetal bovine serum (FBS) was developed.
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Affiliation(s)
- Jing Li
- Key Laboratory for Analytical Science of Food Safety and Biology (Ministry of Education)
- Key Laboratory of Analysis and Detection Technology for Food Safety (Fujian Province)
- Department of Chemistry
- Fuzhou University
- Fuzhou 350116
| | - Meng Cheng
- Key Laboratory for Analytical Science of Food Safety and Biology (Ministry of Education)
- Key Laboratory of Analysis and Detection Technology for Food Safety (Fujian Province)
- Department of Chemistry
- Fuzhou University
- Fuzhou 350116
| | - Mei-Jin Li
- Key Laboratory for Analytical Science of Food Safety and Biology (Ministry of Education)
- Key Laboratory of Analysis and Detection Technology for Food Safety (Fujian Province)
- Department of Chemistry
- Fuzhou University
- Fuzhou 350116
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12
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Fasciano JM, Danielson ND. Ion chromatography for the separation of heparin and structurally related glycoaminoglycans: A review. J Sep Sci 2016; 39:1118-29. [DOI: 10.1002/jssc.201500664] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 01/05/2016] [Accepted: 01/06/2016] [Indexed: 12/17/2022]
Affiliation(s)
| | - Neil D. Danielson
- Department of Chemistry and Biochemistry; Miami University; Oxford OH USA
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13
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Lean QY, Gueven N, Eri RD, Bhatia R, Sohal SS, Stewart N, Peterson GM, Patel RP. Heparins in ulcerative colitis: proposed mechanisms of action and potential reasons for inconsistent clinical outcomes. Expert Rev Clin Pharmacol 2015; 8:795-811. [PMID: 26308504 DOI: 10.1586/17512433.2015.1082425] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Current drug therapies for ulcerative colitis (UC) are not completely effective in managing moderate-to-severe UC and approximately 20% of patients with severe UC require surgical interventions. Heparins, polydisperse mixtures of non-anticoagulant and anticoagulant oligosaccharides, are widely used as anticoagulants. However, heparins are also reported to have anti-inflammatory properties. Unfractionated heparin was initially used in patients with UC for the treatment of rectal microthrombi. Surprisingly, it was found to be effective in reducing UC-associated symptoms. Since then, several pre-clinical and clinical studies have reported promising outcomes of heparins in UC. In contrast, some controlled clinical trials demonstrated no or only limited benefits, thus the potential of heparins for the treatment of UC remains uncertain. This review discusses potential mechanisms of action of heparins, as well as proposed reasons for their contradictory clinical effectiveness in the treatment of UC.
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Affiliation(s)
- Qi Ying Lean
- a 1 Division of Pharmacy, School of Medicine, Faculty of Health, University of Tasmania , Hobart, Tasmania, Australia.,b 2 Faculty of Pharmacy, University of Technology MARA, Puncak Alam , Selangor, Malaysia
| | - Nuri Gueven
- a 1 Division of Pharmacy, School of Medicine, Faculty of Health, University of Tasmania , Hobart, Tasmania, Australia
| | - Rajaraman D Eri
- c 3 School of Health Sciences, Faculty of Health, University of Tasmania, Launceston , Tasmania, Australia
| | - Rajesh Bhatia
- d 4 Royal Hobart Hospital , Hobart, Tasmania, Australia
| | - Sukhwinder Singh Sohal
- c 3 School of Health Sciences, Faculty of Health, University of Tasmania, Launceston , Tasmania, Australia.,e 5 Breathe Well Centre of Research Excellence for Chronic Respiratory Disease and Lung Ageing, School of Medicine, Faculty of Health, University of Tasmania , Hobart, Tasmania, Australia
| | - Niall Stewart
- a 1 Division of Pharmacy, School of Medicine, Faculty of Health, University of Tasmania , Hobart, Tasmania, Australia
| | - Gregory M Peterson
- a 1 Division of Pharmacy, School of Medicine, Faculty of Health, University of Tasmania , Hobart, Tasmania, Australia.,e 5 Breathe Well Centre of Research Excellence for Chronic Respiratory Disease and Lung Ageing, School of Medicine, Faculty of Health, University of Tasmania , Hobart, Tasmania, Australia.,f 6 Health Services Innovation Tasmania, School of Medicine, Faculty of Health, University of Tasmania , Hobart, Tasmania, Australia
| | - Rahul P Patel
- a 1 Division of Pharmacy, School of Medicine, Faculty of Health, University of Tasmania , Hobart, Tasmania, Australia
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14
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Shastri MD, Stewart N, Horne J, Peterson GM, Gueven N, Sohal SS, Patel RP. In-vitro suppression of IL-6 and IL-8 release from human pulmonary epithelial cells by non-anticoagulant fraction of enoxaparin. PLoS One 2015; 10:e0126763. [PMID: 25961885 PMCID: PMC4427328 DOI: 10.1371/journal.pone.0126763] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 04/07/2015] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Enoxaparin, a mixture of anticoagulant and non-anticoagulant fractions, is widely used as an anticoagulant agent. However, it is also reported to possess anti-inflammatory properties. Our study indicated that enoxaparin inhibits the release of IL-6 and IL-8 from A549 pulmonary epithelial cells. Their release causes extensive lung tissue damage. The use of enoxaparin as an anti-inflammatory agent is hampered due to the risk of bleeding associated with its anticoagulant fractions. Therefore, we aimed to identify the fraction responsible for the observed anti-inflammatory effect of enoxaparin and to determine the relationship between its structure and biological activities. METHODS A549 pulmonary epithelial cells were pre-treated in the presence of enoxaparin and its fractions. The levels of IL-6 and IL-8 released from the trypsin-stimulated cells were measured by ELISA. The anticoagulant activity of the fraction responsible for the effect of enoxaparin was determined using an anti-factor-Xa assay. The fraction was structurally characterised using nuclear magnetic resonance. The fraction was 2-O, 6-O or N-desulfated to determine the position of sulfate groups required for the inhibition of interleukins. High-performance size-exclusion chromatography was performed to rule out that the observed effect was due to the interaction between the fraction and trypsin or interleukins. RESULTS Enoxaparin (60 μg/mL) inhibited the release of IL-6 and IL-8 by >30%. The fraction responsible for this effect of enoxaparin was found to be a disaccharide composed of α-L-iduronic-acid and α-D-glucosamine-6-sulfate. It (15 μg/mL) inhibited the release of interleukins by >70%. The 6-O sulphate groups were responsible for its anti-inflammatory effect. The fraction did not bind to trypsin or interleukins, suggesting the effect was not due to an artefact of the experimental model. CONCLUSION The identified disaccharide has no anticoagulant activity and therefore eliminates the risk of bleeding associated with enoxaparin. Future in-vivo studies should be designed to validate findings of the current study.
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Affiliation(s)
- Madhur D. Shastri
- Pharmacy, School of Medicine, Faculty of Health, University of Tasmania, Hobart, Tasmania, Australia
| | - Niall Stewart
- Pharmacy, School of Medicine, Faculty of Health, University of Tasmania, Hobart, Tasmania, Australia
| | - James Horne
- Central Science Laboratory, University of Tasmania, Hobart, Tasmania, Australia
| | - Gregory M. Peterson
- Pharmacy, School of Medicine, Faculty of Health, University of Tasmania, Hobart, Tasmania, Australia
- Health Services Innovation Tasmania, School of Medicine, Faculty of Health, University of Tasmania, Hobart, Tasmania, Australia
- Breathe Well Centre of Research Excellence for Chronic Respiratory Disease and Lung Ageing, School of Medicine, Faculty of Health, University of Tasmania, Hobart, Tasmania, Australia
| | - Nuri Gueven
- Pharmacy, School of Medicine, Faculty of Health, University of Tasmania, Hobart, Tasmania, Australia
| | - Sukhwinder S. Sohal
- Breathe Well Centre of Research Excellence for Chronic Respiratory Disease and Lung Ageing, School of Medicine, Faculty of Health, University of Tasmania, Hobart, Tasmania, Australia
- School of Health Sciences, Faculty of Health, University of Tasmania, Launceston, Tasmania, Australia
| | - Rahul P. Patel
- Pharmacy, School of Medicine, Faculty of Health, University of Tasmania, Hobart, Tasmania, Australia
- * E-mail:
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15
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Fragment profiling of low molecular weight heparins using reversed phase ion pair liquid chromatography-electrospray mass spectrometry. Carbohydr Res 2015; 407:26-33. [DOI: 10.1016/j.carres.2015.01.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 12/12/2014] [Accepted: 01/23/2015] [Indexed: 11/22/2022]
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16
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Li G, Steppich J, Wang Z, Sun Y, Xue C, Linhardt RJ, Li L. Bottom-up low molecular weight heparin analysis using liquid chromatography-Fourier transform mass spectrometry for extensive characterization. Anal Chem 2014; 86:6626-32. [PMID: 24905078 PMCID: PMC4082394 DOI: 10.1021/ac501301v] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 06/06/2014] [Indexed: 01/30/2023]
Abstract
Low molecular weight heparins (LMWHs) are heterogeneous, polydisperse, and highly negatively charged mixtures of glycosaminoglycan chains prescribed as anticoagulants. The detailed characterization of LMWH is important for the drug quality assurance and for new drug research and development. In this study, online hydrophilic interaction chromatography (HILIC) Fourier transform mass spectrometry (FTMS) was applied to analyze the oligosaccharide fragments of LMWHs generated by heparin lyase II digestion. More than 40 oligosaccharide fragments of LMWH were quantified and used to compare LMWHs prepared by three different manufacturers. The quantified fragment structures included unsaturated disaccharides/oligosaccharides arising from the prominent repeating units of these LMWHs, 3-O-sulfo containing tetrasaccharides arising from their antithrombin III binding sites, 1,6-anhydro ring-containing oligosaccharides formed during their manufacture, saturated uronic acid oligosaccharides coming from some chain nonreducing ends, and oxidized linkage region oligosaccharides coming from some chain reducing ends. This bottom-up approach provides rich detailed structural analysis and quantitative information with high accuracy and reproducibility. When combined with the top-down approach, HILIC LC-FTMS based analysis should be suitable for the advanced quality control and quality assurance in LMWH production.
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Affiliation(s)
- Guoyun Li
- College of Food Science and Technology, Ocean University of China, Qingdao, Shandong 266003, China
- Department of Chemistry and Chemical Biology,
Department of Biology, Department of Chemical and Biological Engineering,
Department of Biomedical Engineering, Center for Biotechnology and
Interdisciplinary Studies, Rensselaer Polytechnic
Institute, Troy, New York 12180, United
States
| | - Julia Steppich
- Department of Chemistry and Chemical Biology,
Department of Biology, Department of Chemical and Biological Engineering,
Department of Biomedical Engineering, Center for Biotechnology and
Interdisciplinary Studies, Rensselaer Polytechnic
Institute, Troy, New York 12180, United
States
| | - Zhenyu Wang
- Celsus Laboratories, Inc., Cincinnati, Ohio 45241-1569 United States
| | - Yi Sun
- Department of Chemistry and Chemical Biology,
Department of Biology, Department of Chemical and Biological Engineering,
Department of Biomedical Engineering, Center for Biotechnology and
Interdisciplinary Studies, Rensselaer Polytechnic
Institute, Troy, New York 12180, United
States
| | - Changhu Xue
- College of Food Science and Technology, Ocean University of China, Qingdao, Shandong 266003, China
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology,
Department of Biology, Department of Chemical and Biological Engineering,
Department of Biomedical Engineering, Center for Biotechnology and
Interdisciplinary Studies, Rensselaer Polytechnic
Institute, Troy, New York 12180, United
States
| | - Lingyun Li
- Department of Chemistry and Chemical Biology,
Department of Biology, Department of Chemical and Biological Engineering,
Department of Biomedical Engineering, Center for Biotechnology and
Interdisciplinary Studies, Rensselaer Polytechnic
Institute, Troy, New York 12180, United
States
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17
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Cao Y, Shi S, Wang L, Yao J, Yao T. Ultrasensitive fluorescence detection of heparin based on quantum dots and a functional ruthenium polypyridyl complex. Biosens Bioelectron 2014; 55:174-9. [DOI: 10.1016/j.bios.2013.12.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Revised: 11/21/2013] [Accepted: 12/02/2013] [Indexed: 12/14/2022]
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18
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Shastri MD, Peterson GM, Stewart N, Sohal SS, Patel RP. Non-anticoagulant derivatives of heparin for the management of asthma: distant dream or close reality? Expert Opin Investig Drugs 2014; 23:357-73. [PMID: 24387080 DOI: 10.1517/13543784.2014.866092] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Approximately 300 million people worldwide are currently affected by asthma. Improvements in the understanding of the mechanisms involved in such inflammatory airway disorders has led to the recognition of new therapeutic approaches. Heparin, a widely used anticoagulant, has been shown to be beneficial in the management of asthma. It belongs to the family of highly sulphated polysaccharides referred to as glycosaminoglycans, containing a heterogeneous mixture of both anticoagulant and non-anticoagulant polysaccharides. Experimental findings have suggested that heparin has potential anti-asthmatic properties owing to the ability of its non-anticoagulant oligosaccharides to bind and modulate the activity of a wide range of biological molecules involved in the inflammatory process. AREAS COVERED This review focuses on the potential mechanisms of action and clinical application of heparin as an anti-inflammatory agent for the management of asthma. EXPERT OPINION Heparin may play a significant role in the management of asthma. However, these properties are often hindered by the presence of anticoagulant oligosaccharides, which possess a significant risk of bleeding. Therefore, its therapeutic potential must be explored using well-designed clinical studies that focus on identifying and isolating the anti-inflammatory oligosaccharides of heparin and further elucidating the structure and mechanisms of actions of these non-anticoagulant oligosaccharides.
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Affiliation(s)
- Madhur D Shastri
- University of Tasmania, School of Pharmacy , Private Bag 26, Hobart, Tasmania , Australia +61 3 6226 1079 ; +61 3 6226 2870 ;
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19
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Li D, Chi L, Jin L, Xu X, Du X, Ji S, Chi L. Mapping of low molecular weight heparins using reversed phase ion pair liquid chromatography–mass spectrometry. Carbohydr Polym 2014; 99:339-44. [DOI: 10.1016/j.carbpol.2013.08.074] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 08/18/2013] [Accepted: 08/23/2013] [Indexed: 01/27/2023]
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20
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Gold nanoparticle coupled with fluorophore for ultrasensitive detection of protamine and heparin. Talanta 2013; 116:951-7. [DOI: 10.1016/j.talanta.2013.08.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 07/26/2013] [Accepted: 08/11/2013] [Indexed: 02/01/2023]
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21
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Chen Z, Wang Z, Chen X, Xu H, Liu J. Chitosan-capped gold nanoparticles for selective and colorimetric sensing of heparin. JOURNAL OF NANOPARTICLE RESEARCH : AN INTERDISCIPLINARY FORUM FOR NANOSCALE SCIENCE AND TECHNOLOGY 2013; 15:1930. [PMID: 24078791 PMCID: PMC3782634 DOI: 10.1007/s11051-013-1930-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 08/10/2013] [Indexed: 06/02/2023]
Abstract
In this contribution, novel chitosan-stabilized gold nanoparticles (AuNPs) were prepared by mixing chitosan with citrate-reductive AuNPs under appropriate conditions. The as-prepared chitosan-stabilized AuNPs were positively charged and highly stably dispersed in aqueous solution. They exhibited weak resonance light scattering (RLS) intensity and a wine red color. In addition, the chitosan-stabilized AuNPs were successfully utilized as novel sensitive probes for the detection of heparin for the first time. It was found that the addition of heparin induced a strong increase of RLS intensity for AuNPs and the color change from red to blue. The increase in RLS intensity and the color change of chitosan-stabilized AuNPs caused by heparin allowed the sensitive detection of heparin in the range of 0.2-60 μM (~6.7 U/mL). The detection limit for heparin is 0.8 μM at a signal-to-noise ratio of 3. The present sensor for heparin detection possessed a low detection limit and wide linear range. Additionally, the proposed method was also applied to the detection of heparin in biological media with satisfactory results.
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Affiliation(s)
- Zhanguang Chen
- Department of Chemistry, Shantou University, Shantou, 515063 China
| | - Zhen Wang
- Department of Chemistry, Shantou University, Shantou, 515063 China
| | - Xi Chen
- Department of Chemistry, Shantou University, Shantou, 515063 China
- Shantou Central Hospital, Affiliated Shantou Hospital of SUN YAT-SEN University, Shantou, 515031 China
| | - Haixiong Xu
- Shantou Central Hospital, Affiliated Shantou Hospital of SUN YAT-SEN University, Shantou, 515031 China
| | - Jinbin Liu
- Department of Chemistry, University of Texasat Dallas, Richardson, TX 75080 USA
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22
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Ion exchange chromatographic separation and isolation of oligosaccharides of intact low-molecular-weight heparin for the determination of their anticoagulant and anti-inflammatory properties. Anal Bioanal Chem 2013; 405:6043-52. [PMID: 23712644 DOI: 10.1007/s00216-013-6996-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 04/16/2013] [Accepted: 04/17/2013] [Indexed: 10/26/2022]
Abstract
It is well known that enoxaparin, a widely used anticoagulant and low-molecular-weight heparin containing a large number of oligosaccharides, possesses anti-inflammatory activity. Whilst enoxaparin has shown promising results in various inflammatory disorders, some of its oligosaccharides have anti-inflammatory properties and others increase the risk of bleeding due to their anticoagulant effects. The aim of this study was to develop an effective ion exchange chromatographic (IC) technique which allows the separation, isolation and, consequently, the identification of different oligosaccharides of enoxaparin with or without anticoagulant activity. The developed method utilises a semi-preparative CarboPac PA100 (9 × 250 mm) ion exchange column with sodium chloride gradient elution and UV detection at 232 nm. The method successfully resolved enoxaparin into more than 30 different peaks. IC-derived oligosaccharides with high, moderate, low or no anticoagulant activity were identified using an anti-factor Xa assay. The anti-inflammatory activity of selected oligosaccharides was investigated using the Griess assay. Using this technique, the oligosaccharides of enoxaparin with low or no anticoagulant activity, whilst exhibiting significant anti-inflammatory activity, could be fractionated. This technique can provide a platform to identify the oligosaccharides which are devoid of significant anticoagulant activity and are responsible for the therapeutic effects of enoxaparin that have been observed in various inflammatory conditions.
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23
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Reversed-phase ion-pair ultra-high-performance-liquid chromatography–mass spectrometry for fingerprinting low-molecular-weight heparins. J Chromatogr A 2013; 1292:201-10. [DOI: 10.1016/j.chroma.2013.01.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 12/13/2012] [Accepted: 01/04/2013] [Indexed: 11/20/2022]
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24
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Li L, Zhang F, Zaia J, Linhardt RJ. Top-down approach for the direct characterization of low molecular weight heparins using LC-FT-MS. Anal Chem 2012; 84:8822-9. [PMID: 22985071 DOI: 10.1021/ac302232c] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Low molecular heparins (LMWHs) are structurally complex, heterogeneous, polydisperse, and highly negatively charged mixtures of polysaccharides. The direct characterization of LMWH is a major challenge for currently available analytical technologies. Electrospray ionization (ESI) liquid chromatography-mass spectrometry (LC-MS) is a powerful tool for the characterization complex biological samples in the fields of proteomics, metabolomics, and glycomics. LC-MS has been applied to the analysis of heparin oligosaccharides, separated by size exclusion, reversed phase ion-pairing chromatography, and chip-based amide hydrophilic interaction chromatography (HILIC). However, there have been limited applications of ESI-LC-MS for the direct characterization of intact LMWHs (top-down analysis) due to their structural complexity, low ionization efficiency, and sulfate loss. Here we present a simple and reliable HILIC-Fourier transform (FT)-ESI-MS platform to characterize and compare two currently marketed LMWH products using the top-down approach requiring no special sample preparation steps. This HILIC system relies on cross-linked diol rather than amide chemistry, affording highly resolved chromatographic separations using a relatively high percentage of acetonitrile in the mobile phase, resulting in stable and high efficiency ionization. Bioinformatics software (GlycReSoft 1.0) was used to automatically assign structures within 5-ppm mass accuracy.
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Affiliation(s)
- Lingyun Li
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York 12180-3590, United States
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25
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Fu X, Chen L, Li J, Lin M, You H, Wang W. Label-free colorimetric sensor for ultrasensitive detection of heparin based on color quenching of gold nanorods by graphene oxide. Biosens Bioelectron 2012; 34:227-31. [DOI: 10.1016/j.bios.2012.02.008] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 02/05/2012] [Accepted: 02/06/2012] [Indexed: 11/28/2022]
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26
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Fu X, Chen L, Li J. Ultrasensitive colorimetric detection of heparin based on self-assembly of gold nanoparticles on graphene oxide. Analyst 2012; 137:3653-8. [DOI: 10.1039/c2an35552c] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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27
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King JT, Desai UR. Linear polyalkylamines as fingerprinting agents in capillary electrophoresis of low-molecular-weight heparins and glycosaminoglycans. Electrophoresis 2011; 32:3070-7. [PMID: 22002802 PMCID: PMC3516877 DOI: 10.1002/elps.201100175] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Revised: 04/18/2011] [Accepted: 04/20/2011] [Indexed: 02/05/2023]
Abstract
Glycosaminoglycan (GAG) analysis represents a challenging frontier despite the advent of many high-resolution technologies because of their unparalleled structural complexity. We previously developed a resolving agent-aided capillary electrophoretic approach for fingerprinting low-molecular-weight heparins (LMWHs) to profile their microscopic differences and assess batch-to-batch variability. In this report, we study the application of this approach for fingerprinting other GAGs and analyze the basis for the fingerprints observed in CE. Although the resolving agents, linear polyalkylamines, could resolve the broad featureless electropherogram of LMWH into a large number of distinct, highly reproducible peaks, longer GAGs such as chondroitin sulfate, dermatan sulfate, and heparin responded in a highly individualistic manner. Full-length heparin interacted with linear polyalkylamines very strongly followed by dermatan sulfate, whereas chondroitin sulfate remained essentially unaffected. Oversulfated chondroitin sulfate could be easily identified from full-length heparin. Scatchard analysis of the binding profile of enoxaparin with three linear polyalkylamines displayed a biphasic binding profile suggesting two distinctly different types of interactions. Some LMWH chains were found to interact with linear polyalkylamines with affinities as high as 10 nM, whereas others displayed nearly 5000-fold weaker affinities. These observations provide fundamental insight into the basis for fingerprinting of LMWHs by linear polyalkylamine-based resolving agents, which could be utilized in the design of advanced resolving agents for compositional profiling, direct sequencing, and chemoinformatics studies.
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Affiliation(s)
- J. Timothy King
- Department of Medicinal Chemistry and Institute for Structural Biology and Drug Discovery, Virginia Commonwealth University, Richmond, VA
| | - Umesh R. Desai
- Department of Medicinal Chemistry and Institute for Structural Biology and Drug Discovery, Virginia Commonwealth University, Richmond, VA
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28
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Xue B, Alves S, Desbans C, Souchaud M, Filali-Ansary A, Soubayrol P, Tabet JC. Heparin-like glycosaminoglycan/amine salt-bridge interactions: a new potential tool for HLGAGs analysis using mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2011; 46:689-695. [PMID: 21744418 DOI: 10.1002/jms.1939] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Characterization of glycosaminoglycans poses a challenge for current analytical techniques, as they are highly acidic, polydisperse and heterogeneous compounds. The purpose of this study is the separation and analysis of a partially depolymerized heparin-like glycosaminoglycan by on-line ion-pairing reversed-phase high-performance liquid chromatography/electrospray mass spectrometry. The gas-phase behavior of two synthesized glycosaminoglycans has been investigated. Dibutylamine was found to be the best suited ion-pairing reagents for mass spectrometry analysis. The optimized ion-pairing conditions provide reproducible and easily interpretable electrospray mass spectra in both negative and positive ESI modes. The glycosaminoglycans are detected as a non-covalent complex with amines. In fact, the observed ionic species and their gas-phase dissociation under CID conditions revealed the presence of salt bridge interactions in the gas phase.
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Affiliation(s)
- Baiyi Xue
- Laboratoire de Chimie Structurale Organique et Biologique - UMR 7201, University of Paris VI, Batiment F, 7éme étage, boîte 45, 4 Place Jussieu, F75252 Paris Cedex 05, France
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29
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Affiliation(s)
- R. K. Gilpin
- Department of Chemistry, Wright State University, Dayton, Ohio 45435, United States
| | - C. S. Gilpin
- Select-O-Sep, LLC, 111 West Main Street, Freeport, Ohio 43973, United States
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30
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Yang B, Solakyildirim K, Chang Y, Linhardt RJ. Hyphenated techniques for the analysis of heparin and heparan sulfate. Anal Bioanal Chem 2011; 399:541-57. [PMID: 20853165 PMCID: PMC3235348 DOI: 10.1007/s00216-010-4117-6] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 08/06/2010] [Accepted: 08/09/2010] [Indexed: 12/11/2022]
Abstract
The elucidation of the structure of glycosaminoglycan has proven to be challenging for analytical chemists. Molecules of glycosaminoglycan have a high negative charge and are polydisperse and microheterogeneous, thus requiring the application of multiple analytical techniques and methods. Heparin and heparan sulfate are the most structurally complex of the glycosaminoglycans and are widely distributed in nature. They play critical roles in physiological and pathophysiological processes through their interaction with heparin-binding proteins. Moreover, heparin and low-molecular weight heparin are currently used as pharmaceutical drugs to control blood coagulation. In 2008, the health crisis resulting from the contamination of pharmaceutical heparin led to considerable attention regarding their analysis and structural characterization. Modern analytical techniques, including high-performance liquid chromatography, capillary electrophoresis, mass spectrometry, and nuclear magnetic resonance spectroscopy, played critical roles in this effort. A successful combination of separation and spectral techniques will clearly provide a critical advantage in the future analysis of heparin and heparan sulfate. This review focuses on recent efforts to develop hyphenated techniques for the analysis of heparin and heparan sulfate.
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Affiliation(s)
- Bo Yang
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Kemal Solakyildirim
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Yuqing Chang
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
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31
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Zhong YY, Zhou WF, Hu ZZ, Chen ML, Zhu Y. Novel additives for the separation of organic acids by ion-pair chromatography. CHINESE CHEM LETT 2010. [DOI: 10.1016/j.cclet.2009.12.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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