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Maekawa M. Analysis of Metabolic Changes in Endogenous Metabolites and Diagnostic Biomarkers for Various Diseases Using Liquid Chromatography and Mass Spectrometry. Biol Pharm Bull 2024; 47:1087-1105. [PMID: 38825462 DOI: 10.1248/bpb.b24-00073] [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] [Indexed: 06/04/2024]
Abstract
Analysis of endogenous metabolites in various diseases is useful for searching diagnostic biomarkers and elucidating the molecular mechanisms of pathophysiology. The author and collaborators have developed some LC/tandem mass spectrometry (LC/MS/MS) methods for metabolites and applied them to disease-related samples. First, we identified urinary conjugated cholesterol metabolites and serum N-palmitoyl-O-phosphocholine serine as useful biomarkers for Niemann-Pick disease type C (NPC). For the purpose of intraoperative diagnosis of glioma patients, we developed the LC/MS/MS analysis methods for 2-hydroxyglutaric acid or cystine and found that they could be good differential biomarkers. For renal cell carcinoma, we searched for various biomarkers for early diagnosis, malignancy evaluation and recurrence prediction by global metabolome analysis and targeted LC/MS/MS analysis. In pathological analysis, we developed a simultaneous LC/MS/MS analysis method for 13 steroid hormones and applied it to NPC cells, we found 6 types of reductions in NPC model cells. For non-alcoholic steatohepatitis (NASH), model mice were prepared with special diet and plasma bile acids were measured, and as a result, hydrophilic bile acids were significantly increased. In addition, we developed an LC/MS/MS method for 17 sterols and analyzed liver cholesterol metabolites and found a decrease in phytosterols and cholesterol synthetic markers and an increase in non-enzymatic oxidative sterols in the pre-onset stage of NASH. We will continue to challenge themselves to add value to clinical practice based on cutting-edge analytical chemistry methodology.
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Wang H, Huang C, Ma S, Bo C, Ou J, Gong B. Recent advances of restricted access molecularly imprinted materials and their applications in food and biological samples analysis. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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3
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Maekawa M, Mano N. Searching, Structural Determination, and Diagnostic Performance Evaluation of Biomarker Molecules for Niemann-Pick Disease Type C Using Liquid Chromatography/Tandem Mass Spectrometry. Mass Spectrom (Tokyo) 2022; 11:A0111. [PMID: 36713801 PMCID: PMC9853955 DOI: 10.5702/massspectrometry.a0111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 11/30/2022] [Indexed: 12/04/2022] Open
Abstract
Niemann-Pick disease type C (NPC) is an autosomal recessive disorder that is characterized by progressive neuronal degeneration. Patients with NPC have a wide age of onset and various clinical symptoms. Therefore, the discovery and diagnosis of NPC are very difficult. Conventional laboratory tests are complicated and time consuming. In this context, biomarker searches have recently been performed. Our research group has previously also investigated NPC biomarkers based on liquid chromatography/tandem mass spectrometry (LC/MS/MS) and related techniques. To identify biomarker candidates, nontargeted analysis with high-resolution MS and MS/MS scanning is commonly used. Structural speculation has been performed using LC/MS/MS fragmentation and chemical derivatization, while identification is performed by matching authentic standards and sample specimens. Diagnostic performance evaluation was performed using the validated LC/MS/MS method and analysis of samples from patients and control subjects. NPC biomarkers, which have been identified and evaluated in terms of performance, are various classes of lipid molecules. Oxysterols, cholenoic acids, and conjugates are cholesterol-derived molecules detected in the blood or urine. Plasma lyso-sphingolipids are biomarkers for both NPC and other lysosomal diseases. N-palmitoyl-O-phosphocholine-serine is a novel class of lipid biomarkers for NPC. This article reviews biomarkers for NPC and the analysis methods employed to that end.
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Affiliation(s)
- Masamitsu Maekawa
- Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai, Japan,Correspondence to: Masamitsu Maekawa, Department of Pharmaceutical Sciences, Tohoku University Hospital, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980–8574, Japan, e-mail:
| | - Nariyasu Mano
- Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai, Japan
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4
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A boronate affinity restricted-access material with external hydrophilic bottlebrush polymers for pretreatment of cis -diols in biological matrices. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2017.08.056] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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5
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de Faria HD, Abrão LCDC, Santos MG, Barbosa AF, Figueiredo EC. New advances in restricted access materials for sample preparation: A review. Anal Chim Acta 2017; 959:43-65. [DOI: 10.1016/j.aca.2016.12.047] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 12/28/2016] [Accepted: 12/30/2016] [Indexed: 11/27/2022]
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6
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Baghdady YZ, Schug KA. Evaluation of efficiency and trapping capacity of restricted access media trap columns for the online trapping of small molecules. J Sep Sci 2016; 39:4183-4191. [DOI: 10.1002/jssc.201600777] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Revised: 08/20/2016] [Accepted: 08/20/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Yehia Z. Baghdady
- Department of Chemistry & Biochemistry; The University of Texas at Arlington; Arlington TX USA
| | - Kevin A. Schug
- Department of Chemistry & Biochemistry; The University of Texas at Arlington; Arlington TX USA
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Kawano SI, Hayakawa Y, Hashi Y, Lin JM. Quantitative Analysis of Chloramphenicol in Royal Jelly by Column-switching LC-MS/MS Using a Pretreatment Column with a Higher-pressure Capability. ANAL SCI 2015; 31:445-50. [PMID: 25958875 DOI: 10.2116/analsci.31.445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
An on-line pretreatment liquid chromatography-tandem mass spectrometry (LC-MS/MS) system was developed for the analysis of chloramphenicol (CAP) in royal jelly. A novel methylcellulose-immobilized restricted access media column with a higher-pressure capability of 60 MPa (MC-ODS HP) was developed for the effective removal of proteins and other compounds in the sample matrix. CAP in a sample solution was extracted in 2 min by the column-switching LC-MS/MS system. The system provides a minimum sample pretreatment along with highly sensitive and reproducible analysis. As a result, the limit of quantitation of CAP was 10 pg/mL (= 0.1 μg/kg royal jelly) and the linear dynamic range was between 10 and 10000 pg/mL (correlation coefficient greater than 0.999). The proposed method meets the requirements of regulations in EU (0.3 μg/kg). The inter-day precision and accuracy of CAP at 100 pg/mL over 3 days were 4.5 and 95.4%, respectively. Compared with the conventional method with a pressure of below 25 MPa, the peak separation in the MRM chromatogram was improved by using smaller particles (1.6 μm) for the analytical ODS column. The LC-MS/MS system with an MC-ODS HP expanded the applicability of the automated pretreatment.
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Affiliation(s)
- Shin-ichi Kawano
- Shimadzu Global COE for Application & Technical Development, Shimadzu (China) Co., Ltd
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8
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Analysis of chloramphenicol in honey by on-line pretreatment liquid chromatography–tandem mass spectrometry. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2014.10.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Maekawa M, Shimada M, Iida T, Goto J, Mano N. Tandem mass spectrometric characterization of bile acids and steroid conjugates based on low-energy collision-induced dissociation. Steroids 2014; 80:80-91. [PMID: 24296272 DOI: 10.1016/j.steroids.2013.11.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 11/14/2013] [Accepted: 11/20/2013] [Indexed: 11/15/2022]
Abstract
We examined the characteristics of several bile acids and some steroid conjugates under low-energy-collision-induced dissociation conditions using a triple quadrupole tandem mass spectrometer. According to conjugation types, we observed characteristic product ions and/or neutral losses in the product ion spectra. Amino acid conjugates afforded specific product ions. For example, glycine-conjugated metabolites routinely produced a product ion at m/z 74, and taurine-conjugated metabolites produced product ions at m/z 124, 107, and 80. When a strong peak appeared at m/z 97, the molecule contained a sulfate group. In contrast to amino acid conjugates, carbohydrate conjugates required a combination of product ions and neutral losses for identification. We could discriminate a glucoside from an acyl galactoside according to the presence or absence of a product ion at m/z 161 and a neutral loss of 180 Da. Discrimination among esters, aliphatic ethers, and phenolic ether types of glucuronides was based upon differences in the intensities of a product ion at m/z 175 and a neutral loss of 176 Da. Furthermore, N-acetylglucosamine conjugates showed a characteristic product ion at m/z 202 and a neutral loss of 203 Da, and the appearance of a product ion at m/z 202 revealed the existence of N-acetylglucosamine conjugated to an aliphatic hydroxyl group without a double bond in the immediate vicinity. Together, the data presented here will help to enable the identification of unknown conjugated cholesterol metabolites by using low-energy collision-induced dissociation.
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Affiliation(s)
- Masamitsu Maekawa
- Department of Pharmaceutical Sciences, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
| | - Miki Shimada
- Department of Pharmaceutical Sciences, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
| | - Takashi Iida
- Department of Chemistry, College of Humanities and Sciences, Nihon University, Sakurajousui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Junichi Goto
- Department of Pharmaceutical Sciences, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
| | - Nariyasu Mano
- Department of Pharmaceutical Sciences, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
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Yamamoto E, Niijima J, Asakawa N. Selective determination of potential impurities in an active pharmaceutical ingredient using HPLC-SPE-HPLC. J Pharm Biomed Anal 2013; 84:41-7. [DOI: 10.1016/j.jpba.2013.05.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 05/21/2013] [Accepted: 05/22/2013] [Indexed: 11/26/2022]
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11
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Maekawa M, Misawa Y, Sotoura A, Yamaguchi H, Togawa M, Ohno K, Nittono H, Kakiyama G, Iida T, Hofmann AF, Goto J, Shimada M, Mano N. LC/ESI-MS/MS analysis of urinary 3β-sulfooxy-7β-N-acetylglucosaminyl-5-cholen-24-oic acid and its amides: new biomarkers for the detection of Niemann-Pick type C disease. Steroids 2013; 78:967-72. [PMID: 23751200 DOI: 10.1016/j.steroids.2013.05.017] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 05/21/2013] [Accepted: 05/30/2013] [Indexed: 11/22/2022]
Abstract
We developed a sensitive, reliable, and accurate LC/ESI-MS/MS method for measurement of 3β-sulfooxy-7β-N-acetylglucosaminyl-5-cholen-24-oic acid and its glycine and taurine amides in urine. This atypical C24 bile acid has been reported previously to be present in the urine of patients with Niemann-Pick Type C (NPC) disease. In the method, targeted analytes are concentrated at the front edge of a trapping column, Shim-pack MAYI-C8, which permits elimination of contaminating molecules in the urinary matrix. The trapped analytes are then eluted, separated on a YMC-Pack Pro C18, and quantified with MS/MS using selected reaction monitoring. The method could detect (as amount injected) 2pg of nonamidated 3β-sulfooxy-7β-N-acetylglucosaminyl-5-cholen-24-oic acid, 2pg of its glycine-amide, and 0.6pg of its taurine-amide, and is linear up to 300pg. The method was then used to measure the three analytes in the urine of NPC patients (N=2), 3β-hydroxysteroid dehydrogenase deficiency patients (N=2), and healthy volunteers (N=8). Measurable concentrations of all three analytes were present in all subjects. The urinary concentration of the sum of all three analytes was four hundred times greater in the 3month NPC patient and 40times greater in the adult patient than that of healthy volunteers. The markedly elevated urinary concentration of 3β-sulfooxy-7β-N-acetylglucosaminyl-5-cholen-24-oic acid and its amides in NPC patients suggests that these compounds may be valuable biomarkers for detection of NPC disease.
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Affiliation(s)
- Masamitsu Maekawa
- Department of Pharmaceutical Sciences, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
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12
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Yang SH, Fan H, Classon RJ, Schug KA. Restricted access media as a streamlined approach toward on-line sample preparation: Recent advancements and applications. J Sep Sci 2013; 36:2922-38. [DOI: 10.1002/jssc.201300595] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 06/16/2013] [Accepted: 06/21/2013] [Indexed: 01/22/2023]
Affiliation(s)
- Samuel H. Yang
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX USA
| | - Hui Fan
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX USA
| | | | - Kevin A. Schug
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX USA
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13
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Nakagawa S, Kuwabara N, Kobayashi H, Shimoeda S, Ohta S, Yamato S. Simple column-switching HPLC method for determining levels of the antifungal agent micafungin in human plasma and application to patient samples. Biomed Chromatogr 2012; 27:551-5. [DOI: 10.1002/bmc.2822] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2012] [Revised: 08/07/2012] [Accepted: 08/29/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Saori Nakagawa
- Department of Bio-analytical Chemistry, Faculty of Pharmaceutical Sciences; Niigata University of Pharmacy and Applied Life Sciences; 265-1 Higashijima, Akiha-ku; Niigata; Niigata; 956-8603; Japan
| | - Naoko Kuwabara
- Department of Bio-analytical Chemistry, Faculty of Pharmaceutical Sciences; Niigata University of Pharmacy and Applied Life Sciences; 265-1 Higashijima, Akiha-ku; Niigata; Niigata; 956-8603; Japan
| | - Hikaru Kobayashi
- Department of First Internal Medicine; Nagano Red Cross Hospital; 5-22-1 Wakasato; Nagano; Nagano; 380-8582; Japan
| | - Sadahiko Shimoeda
- Department of Pharmaceutical Health Care and Sciences, Faculty of Pharmaceutical Sciences; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi; Hachioji; Tokyo; 192-0392; Japan
| | - Shin Ohta
- Department of Pharmaceutical Health Care and Sciences, Faculty of Pharmaceutical Sciences; Tokyo University of Pharmacy and Life Sciences; 1432-1 Horinouchi; Hachioji; Tokyo; 192-0392; Japan
| | - Susumu Yamato
- Department of Bio-analytical Chemistry, Faculty of Pharmaceutical Sciences; Niigata University of Pharmacy and Applied Life Sciences; 265-1 Higashijima, Akiha-ku; Niigata; Niigata; 956-8603; Japan
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14
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Direct, simultaneous measurement of liposome-encapsulated and released drugs in plasma by on-line SPE–SPE–HPLC. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:3620-5. [DOI: 10.1016/j.jchromb.2011.10.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 09/24/2011] [Accepted: 10/03/2011] [Indexed: 01/08/2023]
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15
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Yamamoto E, Kato T, Mano N, Asakawa N. Effective on-line extraction of drugs from plasma using a restricted-access media column in column-switching HPLC equipped with a dilution system: Application to the simultaneous determination of ER-118585 and its metabolites in canine plasma. J Pharm Biomed Anal 2009; 49:1250-5. [DOI: 10.1016/j.jpba.2009.02.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Revised: 02/17/2009] [Accepted: 02/20/2009] [Indexed: 10/21/2022]
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16
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Restricted-access media supports for direct high-throughput analysis of biological fluid samples: review of recent applications. Bioanalysis 2009; 1:577-94. [DOI: 10.4155/bio.09.39] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
This review presents an update on the use of restricted-access materials (RAMs) for direct injection of biological samples. The fundamental improvements in the preparation of tailored RAMs and the diversity of applications with these phases are presented. Insights into diminishing the matrix effect by the use of RAM supports in methods by LC–MS and into the low number of methods for enantiomeric separations by direct injections of biological samples are addressed. The diversity of systems that incorporate RAMs for selective sample clean-up or fractionation in proteome and peptidome analysis is also covered.
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Liu S, Shinkai N, Kakubari I, Saitoh H, Noguchi KI, Saitoh T, Yamauchi H. Automated analysis of fluvoxamine in rat plasma using a column-switching system and ion-pair high-performance liquid chromatography. Biomed Chromatogr 2008; 22:1442-9. [DOI: 10.1002/bmc.1079] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Chiral ligand-exchange chromatography of amino acids using porous graphitic carbon coated with a dinaphthyl derivative of neamine. Anal Bioanal Chem 2008; 393:655-60. [DOI: 10.1007/s00216-008-2488-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2008] [Revised: 10/10/2008] [Accepted: 10/15/2008] [Indexed: 11/25/2022]
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19
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Nakagawa S, Suzuki R, Yamazaki R, Kusuhara Y, Mitsumoto S, Kobayashi H, Shimoeda S, Ohta S, Yamato S. Determination of the antifungal agent voriconazole in human plasma using a simple column-switching high-performance liquid chromatography and its application to a pharmacokinetic study. Chem Pharm Bull (Tokyo) 2008; 56:328-31. [PMID: 18310944 DOI: 10.1248/cpb.56.328] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A simple column-switching high performance liquid chromatographic (HPLC) method that does not require any complicated pretreatment has been developed to determine voriconazole in human plasma samples. An internal standard (IS) and borate buffer (pH 9.0) were added to plasma samples, which were then injected directly into the column-switching HPLC system using MAYI-ODS as a pre-column. The calibration curve for voriconazole showed good linearity in the range of 0.2-10 mug/ml in human plasma. The mean RSD (%) value of intra-day (n=6) and inter-day (n=5) precision were less than 5.4% and 8.2%, respectively. This system could make more than three hundred successive, accurate measurements when a washing step with ammonium acetate solution was added. This method was successfully applied to measure the therapeutic voriconazole level in patients' plasma, and was used in a study of voriconazole pharmacokinetics after oral administration.
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Affiliation(s)
- Saori Nakagawa
- Department of Bio-analytical Chemistry, Faculty of Pharmaceutical Sciences, Niigata University of Pharmacy and Applied Life Sciences, 265-1 Higashijima, Akiha-ku, Niigata 956-8603, Japan
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20
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Sato Y, Yamamoto E, Takakuwa S, Kato T, Asakawa N. Weak cation-exchange restricted-access material for on-line purification of basic drugs in plasma. J Chromatogr A 2008; 1190:8-13. [DOI: 10.1016/j.chroma.2008.02.103] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2007] [Revised: 02/18/2008] [Accepted: 02/22/2008] [Indexed: 11/28/2022]
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Hashi Y, Yao JG, Li YQ, Liu Y, Lin JM. On-Line Sample Treatment LC System for MS Compatibility. Chromatographia 2008. [DOI: 10.1365/s10337-008-0530-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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22
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Pragst F. Chapter 13 High performance liquid chromatography in forensic toxicological analysis. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/s1567-7192(06)06013-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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23
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Gasparrini F, Ciogli A, D’Acquarica I, Misiti D, Badaloni E, Giorgi F, Vigevani A. Synthesis and characterization of novel internal surface reversed-phase silica supports for high-performance liquid chromatography. J Chromatogr A 2007; 1176:79-88. [DOI: 10.1016/j.chroma.2007.10.062] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2007] [Revised: 10/22/2007] [Accepted: 10/23/2007] [Indexed: 11/28/2022]
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24
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Pickl KE, Magnes C, Bodenlenz M, Pieber TR, Sinner FM. Rapid online-SPE-MS/MS method for ketoprofen determination in dermal interstitial fluid samples from rats obtained by microdialysis or open-flow microperfusion. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 850:432-9. [PMID: 17227721 DOI: 10.1016/j.jchromb.2006.12.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2006] [Revised: 12/14/2006] [Accepted: 12/17/2006] [Indexed: 11/15/2022]
Abstract
Pharmacokinetic studies of topical ketoprofen formulations using continuous sampling techniques such as microdialysis (MD) or open-flow microperfusion (OFM) require sensitive assays due to small sample volumes. A simple and easy online-SPE-MS/MS method for ketoprofen analysis was developed for both MD and OFM samples obtained from rat dermal tissue. The quantification range is 25-5000 ng/ml with a limit of detection of 3 ng/ml using only 10 microl sample volume. The method is characterized by a simple setup using a short polymeric SPE column (OASIS HLB) for desalting with 1.5 min run times in combination with a sensitive MS detection in negative ESI MRM mode. An easy sample workup procedure was used which enables high throughput analysis of a large number of samples for pharmacokinetic studies. In addition, a commercial available (fenoprofen) as well as an isotopically labelled (deuterated ketoprofen) standard were investigated as potential internal standards. The method was validated according to FDA guidelines for bioanalytical validation in terms of accuracy, intra-batch and inter-batch precision, linearity, matrix effect, recovery and stability for both internal standards. Accuracies were 98-113% (fenoprofen) and 95-108% (deuterated ketoprofen), intra-batch precision was 2-3% R.S.D. (fenoprofen) and 2-6% R.S.D. (deuterated ketoprofen), and inter-batch precision was 2-6% R.S.D. (fenoprofen) and 3-6% R.S.D. (deuterated ketoprofen) over the entire quantification range. The presented method was applied to dermal interstitial fluid samples obtained in a topical administration study of ketoprofen in rats.
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Affiliation(s)
- Karin E Pickl
- Institute of Medical Technologies and Health Management, Joanneum Research, Auenbruggerplatz 20/3, 8036 Graz, Austria
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Asakawa Y, Ozawa C, Osada K, Kaneko S, Asakawa N. Reduction of carry-over in column-switching HPLC/MS system with automated system washing procedure for highly sensitive direct analysis of donepezil in dog plasma. J Pharm Biomed Anal 2007; 43:683-90. [PMID: 16971081 DOI: 10.1016/j.jpba.2006.08.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2006] [Revised: 08/02/2006] [Accepted: 08/05/2006] [Indexed: 10/24/2022]
Abstract
To solve the problem of carry-over--a persistent chromatographic challenge for bioanalytical assays with highly sensitive detector such as a mass spectrometry (MS)--a new on-line sample pretreatment HPLC/MS system using a column-switching technique was established. This system was designed to reduce carry-over based on a hydrophobic interaction mechanism using a washing function (multi-mobile phase flow system), as well as to remove impurities on-line in a mobile phase for the pretreatment. As a result, a washing function in this system was enabled to reduce carry-over and to remove impurities in a mobile phase by automatic operation. Therefore, concentration levels of donepezil (DH) in dog plasma as low as 10 pg/mL could be determined using this on-line sample pretreatment HPLC/MS system. In addition, method validation results of specificity, linearity, accuracy, precision, lower limit of quantitation (LLOQ), and carry-over demonstrated that this on-line sample pretreatment HPLC/MS system was robust and valid as a practical assay of drugs and metabolites in the biological samples.
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Affiliation(s)
- Yoshiki Asakawa
- Sunplanet Co., Ltd., 2 Kawashimatakehaya, Kakamigahara, Gifu 501-6024, Japan.
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Yamamoto E, Igarashi H, Sato Y, Kushida I, Kato T, Kajima T, Asakawa N. Reliable on-line sample preparation of basic compounds from plasma using a reversed phase restricted access media in column-switching LC. J Pharm Biomed Anal 2006; 42:587-92. [PMID: 16828251 DOI: 10.1016/j.jpba.2006.05.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2006] [Revised: 05/22/2006] [Accepted: 05/27/2006] [Indexed: 11/22/2022]
Abstract
We investigated on-line sample preparation of basic compounds from plasma using a methylcellulose-immobilized reversed-phase restricted-access media in column-switching liquid chromatography (LC). Dilution of the plasma sample with phosphate buffered saline prevented or delayed the formation of fibrin clots at 4 degrees C and resulted in reproducible on-line sample preparation over a 30-h period. The use of an ion-pair reagent in the extraction LC enhanced recoveries of hydrophilic basic compounds. The ability of the methods to quantify compounds in plasma were validated and the method was successfully applied to the pharmacokinetic study of a hydrophilic basic compound injected into the bloodstream of rats.
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Affiliation(s)
- Eiichi Yamamoto
- Analytical Research Laboratories, Eisai Co. Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
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Yamamoto E, Takakuwa S, Kato T, Asakawa N. Sensitive determination of aspirin and its metabolites in plasma by LC-UV using on-line solid-phase extraction with methylcellulose-immobilized anion-exchange restricted access media. J Chromatogr B Analyt Technol Biomed Life Sci 2006; 846:132-8. [PMID: 16959551 DOI: 10.1016/j.jchromb.2006.08.037] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2006] [Revised: 08/05/2006] [Accepted: 08/22/2006] [Indexed: 11/23/2022]
Abstract
We describe a sensitive determination of aspirin (ASA) and its three metabolites (salicylic acid [SA], 2,3-dihydroxybenzoic acid [2,3-DHBA], and 2,5-dihydroxybenzoic acid [gentisic acid (GA)]) in rat plasma. Analysis was carried out by on-line solid-phase extraction (SPE) using a methylcellulose-immobilized-strong anion-exchanger (MC-SAX), followed by liquid chromatography (LC) coupled with UV detection. The lower limits of quantitation for ASA and SA were 60 ng/mL in 100 microL of plasma, respectively. This method was validated with respect to intra- and inter-day precision, accuracy, and linearity up to concentrations of 20,000 ng/mL for ASA, SA, 2,3-DHBA and gentisic acid, respectively. The method was successfully applied to an analysis of the pharmacokinetics of ASA and SA in rats.
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Affiliation(s)
- Eiichi Yamamoto
- Analytical Research Laboratories, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
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Cassiano NM, Lima VV, Oliveira RV, de Pietro AC, Cass QB. Development of restricted-access media supports and their application to the direct analysis of biological fluid samples via high-performance liquid chromatography. Anal Bioanal Chem 2006; 384:1462-9. [PMID: 16800052 DOI: 10.1007/s00216-005-0253-9] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A quick overview of published methods for analyzing compounds in complex biological samples reveals that the most difficult step is the clean-up or extraction of a required compound from the matrix. The strategy required to analyze exogenous compounds in biological fluids depends greatly upon the nature of the compound and upon the biomatrix. Coupled-column separation using restricted-access media as the first dimension in order to exclude macromolecules and retain micromolecules has been successfully used for a number of biological fluids. This paper presents the history of the development of restricted-access media supports and of their application to the direct injection of biological fluid samples in high-performance liquid chromatography.
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Affiliation(s)
- N M Cassiano
- Departamento de Química, Universidade Federal de São Carlos, Cx. Postal 676, São Carlos, SP, 13565-905, Brazil
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29
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Kawano SI, Takahashi M, Hine T, Yamamoto E, Asakawa N. On-line pretreatment using methylcellulose-immobilized cation-exchange restricted access media for direct liquid chromatography/mass spectrometric determination of basic drugs in plasma. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2005; 19:2827-32. [PMID: 16144027 DOI: 10.1002/rcm.2130] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
A novel methylcellulose-immobilized restricted access media column with strong cation-exchange groups on an internal surface (MC-SCX) was evaluated for the direct injection analysis of basic polar drugs in plasma by column-switching liquid chromatography/mass spectrometry (LC/MS). Analytical conditions, including an automated pretreatment step and MS detection, were optimized for a series of basic drugs (doxepin, desipramine, imipramine, nortriptyline, amitriptyline, clomipramine). On-line pretreatment with the MC-SCX column followed by fast gradient analysis using a C18 column resulted in a total analysis cycle time of 7 min for each spiked plasma sample. More than 150 plasma samples spiked with target compounds were measured without compromising MS detection (relative standard deviations less than 11% for all compounds, and regression coefficients greater than 0.99).
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Affiliation(s)
- Shin-ichi Kawano
- Analytical Applications Department, Shimadzu Corporation, 1 Nishinokyo-Kuwabaracho, Nakagyo-ku, Kyoto 604-8511, Japan.
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30
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Yamamoto E, Sakaguchi T, Kajima T, Mano N, Asakawa N. Novel methylcellulose-immobilized cation-exchange precolumn for on-line enrichment of cationic drugs in plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2004; 807:327-34. [PMID: 15203047 DOI: 10.1016/j.jchromb.2004.04.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2003] [Revised: 04/27/2004] [Accepted: 04/27/2004] [Indexed: 11/19/2022]
Abstract
We developed a novel methylcellulose-immobilized strong cation-exchange (MC-SCX) precolumn for direct analysis of drugs in plasma. MC-SCX consists of silica gel with a methylcellulose outer-surface and a 2-(4-sulfophenyl) ethyl phase inner-surface. The MC-SCX precolumn was evaluated by direct analysis using pyridoxine, atenolol and sulpiride spiked in plasma, using a column-switching HPLC system. Each drug was retained and enriched on MC-SCX using an acidic mobile phase, which resulted in good linearity, sufficient reproducibility, intra- and inter day precision, and accuracy in analytical ion-pair LC with trifluoroacetic acid. The analytical methods for model drugs were applied to pharmacokinetics of atenolol and sulpiride in rats.
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Affiliation(s)
- Eiichi Yamamoto
- Analytical Research Laboratories, Eisai Co., Ltd., 5-1-3 Tokodai, Tsukuba, Ibaraki 300-2635, Japan.
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Pragst F, Herzler M, Erxleben BT. Systematic toxicological analysis by high-performance liquid chromatography with diode array detection (HPLC-DAD). ACTA ACUST UNITED AC 2004; 42:1325-40. [PMID: 15576293 DOI: 10.1515/cclm.2004.251] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractIn recent years, photodiode array detectors (DADs) have been much improved with respect to wavelength accuracy and resolution, sensitivity, linearity and software operation. UV spectra of drugs measured with up-to-date DADs from different manufacturers are in excellent agreement, have the same quality as measured by a conventional UV spectrometer and are highly reproducible. The calculation of similarity parameters by the DAD software includes the entire range of the spectra compared and allows recognition of very small differences. It was shown in a systematic study of more than 2500 toxicologically relevant substances that UV spectra have a very high specificity with respect to substance structure. Therefore, HPLC-DAD in combination with a comprehensive database of UV spectra and retention parameters is one of the most efficient techniques used in systematic toxicological analysis (STA). Furthermore, the method is advantageous for the identification of metabolites, since in many cases they have the same or very similar UV spectra compared with their respective parent substances and their retention times on reversed-phase columns are shifted in a manner typical of the particular biotransformation reaction. Beside these general aspects, practical applications of HPLC-DAD for STA are reviewed with respect to sample preparation and chromatographic conditions. The efficiency of the method is demonstrated for an example of a routine procedure using liquid-liquid extraction with CH
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Affiliation(s)
- Fritz Pragst
- Institute of Legal Medicine, University Hospital Charité, Berlin, Germany.
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Mano N, Nikaido A, Narui T, Yamasaki D, Goto J. Rapid and simple quantitative assay method for diastereomeric flurbiprofen glucuronides in the incubation mixture. J Chromatogr B Analyt Technol Biomed Life Sci 2002; 776:125-31. [PMID: 12127333 DOI: 10.1016/s1570-0232(02)00032-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Acyl glucuronides of nonsteroidal anti-inflammatory drugs having a chiral center are known to be chemically very active and form covalently bound adducts with proteins, such as human serum albumin, which may be the cause of hypersensitive reactions. Hepatic acyl glucuronosyltransferase catalyzes the transformation of alpha-aryl propionates into these diastereoisomeric acyl glucuronides, and, hence, its activity needs to be characterized. From this point of view, we developed a rapid, accurate and reproducible analytical method for the separation and determination of diastereoisomeric glucuronides of flurbiprofen, one of the nonsteroidal anti-inflammatory drugs, in the incubation mixture of the hepatic microsomal preparation by high-performance liquid chromatography with a simple column-switching technique for deproteinization. The glucuronides were separated on a TSKgel ODS-80Ts column with 20 mM ammonium acetate buffer (pH 5.6)-ethanol-acetonitrile as the mobile phase and monitored with a UV detector at 246 nm. The detection limit of the proposed method was 600 fmol/injection at a signal-to-noise ratio of 10. The validation results indicated that this method would be very useful for the determination of diastereomeric acyl glucuronides formed from flurbiprofen in an incubation mixture.
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Affiliation(s)
- Nariyasu Mano
- Bioanalytical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-8578, Japan
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