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Kampschulte N, Berking T, Çelik IE, Kirsch SF, Schebb NH. Inhibition of cytochrome P450 monooxygenase-catalyzed oxylipin formation by flavonoids: Evaluation of structure-activity relationship towards CYP4F2-selective inhibitors. Eur J Med Chem 2022; 238:114332. [DOI: 10.1016/j.ejmech.2022.114332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 03/19/2022] [Accepted: 03/28/2022] [Indexed: 11/03/2022]
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2
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Wang T, Li H, Han Y, Wang Y, Gong J, Gao K, Li W, Zhang H, Wang J, Qiu X, Zhu T. A rapid and high-throughput approach to quantify non-esterified oxylipins for epidemiological studies using online SPE-LC-MS/MS. Anal Bioanal Chem 2020; 412:7989-8001. [DOI: 10.1007/s00216-020-02931-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/11/2020] [Accepted: 08/31/2020] [Indexed: 12/31/2022]
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3
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Greite R, Derlin K, Hensen B, Thorenz A, Rong S, Chen R, Hellms S, Jang MS, Bräsen JH, Meier M, Willenberg I, Immenschuh S, Haller H, Luft FC, Panigrahy D, Hwang SH, Hammock BD, Schebb NH, Gueler F. Early antihypertensive treatment and ischemia-induced acute kidney injury. Am J Physiol Renal Physiol 2020; 319:F563-F570. [PMID: 32799675 DOI: 10.1152/ajprenal.00078.2020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Acute kidney injury (AKI) frequently complicates major surgery and can be associated with hypertension and progress to chronic kidney disease, but reports on blood pressure normalization in AKI are conflicting. In the present study, we investigated the effects of an angiotensin-converting enzyme inhibitor, enalapril, and a soluble epoxide hydrolase inhibitor, 1-trifluoromethoxyphenyl-3-(1-propionylpiperidin-4-yl)urea (TPPU), on renal inflammation, fibrosis, and glomerulosclerosis in a mouse model of ischemia-reperfusion injury (IRI)-induced AKI. Male CD1 mice underwent unilateral IRI for 35 min. Blood pressure was measured by tail cuff, and mesangial matrix expansion was quantified on methenamine silver-stained sections. Renal perfusion was assessed by functional MRI in vehicle- and TPPU-treated mice. Immunohistochemistry was performed to study the severity of AKI and inflammation. Leukocyte subsets were analyzed by flow cytometry, and proinflammatory cytokines were analyzed by quantitative PCR. Plasma and tissue levels of TPPU and lipid mediators were analyzed by liquid chromatography mass spectrometry. IRI resulted in a blood pressure increase of 20 mmHg in the vehicle-treated group. TPPU and enalapril normalized blood pressure and reduced mesangial matrix expansion. However, inflammation and progressive renal fibrosis were severe in all groups. TPPU further reduced renal perfusion on days 1 and 14. In conclusion, early antihypertensive treatment worsened renal outcome after AKI by further reducing renal perfusion despite reduced glomerulosclerosis.
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Affiliation(s)
- Robert Greite
- Nephrology, Hannover Medical School, Hannover, Germany
| | - Katja Derlin
- Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany
| | - Bennet Hensen
- Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany
| | - Anja Thorenz
- Nephrology, Hannover Medical School, Hannover, Germany
| | - Song Rong
- Nephrology, Hannover Medical School, Hannover, Germany
| | - Rongjun Chen
- Nephrology, Hannover Medical School, Hannover, Germany
| | - Susanne Hellms
- Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany
| | - Mi-Sun Jang
- Nephrology, Hannover Medical School, Hannover, Germany
| | | | - Martin Meier
- Imaging Center, Institute of Laboratory Animal Sciences, Hannover Medical School, Hannover, Germany
| | - Ina Willenberg
- Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany
| | | | | | - Friedrich C Luft
- Experimental and Clinical Research Center, Max-Delbrück Center/Charité, Berlin, Germany
| | - Dipak Panigrahy
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Sung Hee Hwang
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, California
| | - Bruce D Hammock
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer Center, University of California, Davis, California
| | - Nils Helge Schebb
- Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany
| | - Faikah Gueler
- Nephrology, Hannover Medical School, Hannover, Germany
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4
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Hellms S, Gueler F, Gutberlet M, Schebb NH, Rund K, Kielstein JT, VoChieu V, Rauhut S, Greite R, Martirosian P, Haller H, Wacker F, Derlin K. Single-dose diclofenac in healthy volunteers can cause decrease in renal perfusion measured by functional magnetic resonance imaging. ACTA ACUST UNITED AC 2019; 71:1262-1270. [PMID: 31131893 DOI: 10.1111/jphp.13105] [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: 02/12/2019] [Accepted: 04/22/2019] [Indexed: 12/18/2022]
Abstract
OBJECTIVES We investigated changes of renal perfusion after topical and oral diclofenac administration in healthy volunteers using functional magnetic resonance imaging (MRI) with arterial spin labelling (ASL). METHODS Twenty-four healthy human participants (21-51 years) underwent 1.5T MRI before and 1 h after a single oral dose of diclofenac (50 mg). Twelve of 24 participants underwent an additional MRI examination following 3-day topical diclofenac administration. For renal perfusion imaging, a flow-sensitive alternating inversion-recovery TrueFISP ASL sequence was applied. Plasma concentrations of diclofenac and serum concentrations of thromboxane were determined. KEY FINDINGS After oral diclofenac application, large interindividual differences in plasma concentrations were observed (range <3-4604 nm). Topical diclofenac application did not result in relevant systemic diclofenac levels (range 5-75 nm). MRI showed a significant reduction of renal perfusion in individuals with diclofenac levels ≥225 nm (baseline: 347 ± 7 vs diclofenac: 323 ± 8 ml/min/100 g, P < 0.01); no significant differences were observed in participants with diclofenac levels <225 nm. Diclofenac levels correlated negatively with thromboxane B2 levels pointing towards target engagement. CONCLUSIONS Single-dose diclofenac caused a decrease in renal perfusion in participants with diclofenac levels ≥225 nm. We demonstrated that even a single dose of diclofenac can impair renal perfusion, which could be detrimental in patients with underlying chronic kidney disease or acute kidney injury.
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Affiliation(s)
- Susanne Hellms
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany
| | - Faikah Gueler
- Nephrology Hannover Medical School, Hannover, Germany
| | - Marcel Gutberlet
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany
| | - Nils Helge Schebb
- Institute for Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Hannover, Germany.,Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany
| | - Katharina Rund
- Institute for Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Jan T Kielstein
- Medical Clinic V (Nephrology, Rheumatology, Blood Purification), Academic Teaching Hospital Braunschweig, Braunschweig, Germany
| | - VanDai VoChieu
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany
| | | | - Robert Greite
- Nephrology Hannover Medical School, Hannover, Germany
| | - Petros Martirosian
- Section on Experimental Radiology, University of Tuebingen, Tübingen, Germany
| | | | - Frank Wacker
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany
| | - Katja Derlin
- Institute for Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany
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5
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Song L, Wang J, Gao Q, Ma X, Wang Y, Zhang Y, Xun H, Yao X, Tang F. Simultaneous determination of five azadirachtins in the seed and leaf extracts of Azadirachta indica by automated online solid-phase extraction coupled with LC-Q-TOF-MS. Chem Cent J 2018; 12:85. [PMID: 30027362 PMCID: PMC6053346 DOI: 10.1186/s13065-018-0453-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 07/16/2018] [Indexed: 11/10/2022] Open
Abstract
Neem (Azadirachta indica) extract is well-known as a natural pesticide for the control of agricultural pests. Azadirachtin A and its structural analogues are considered as active compounds. However, the amounts of azadirachtins varies in neem extracts, providing a variety of insecticidal activities. In this study, a novel method of automated online solid-phase extraction coupled with liquid chromatography/quadrupole-time-of-flight mass spectrometry (SPE-LC–Q-TOF–MS) was developed and validated for simultaneous quantification of five azadirachtins (azadirachtins A, B, D, H and I) in seed and leaf extracts of A. indica. Different experimental parameters (such as SPE cartridge, injection volume and washing step) were optimized. The optimized SPE-LC–Q-TOF–MS method showed good recovery (82.0–102.8%), linearity (r2 ≥ 0.9991) and precision (0.83–4.83%). The limit of detections (LODs) for the five analytes ranged from 0.34 to 0.76 ng mL−1. The validated method was successfully applied for determination of the analytes in the neem leaves and seeds from different locations and a neem formulation. The online SPE-LC–Q-TOF–MS method was found to be a simple, precise and accurate and can be used as a powerful tool for quality control of neem extracts or its formulations.
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Affiliation(s)
- Li Song
- SFA Key Laboratory of Bamboo and Rattan Science and Technology, International Centre for Bamboo and Rattan, No. 8 Futong Dongdajie, Wangjing, Chaoyang District, Beijing, 100102, China
| | - Jin Wang
- SFA Key Laboratory of Bamboo and Rattan Science and Technology, International Centre for Bamboo and Rattan, No. 8 Futong Dongdajie, Wangjing, Chaoyang District, Beijing, 100102, China.
| | - Quan Gao
- SFA Key Laboratory of Bamboo and Rattan Science and Technology, International Centre for Bamboo and Rattan, No. 8 Futong Dongdajie, Wangjing, Chaoyang District, Beijing, 100102, China
| | - Xiaojiang Ma
- SFA Key Laboratory of Bamboo and Rattan Science and Technology, International Centre for Bamboo and Rattan, No. 8 Futong Dongdajie, Wangjing, Chaoyang District, Beijing, 100102, China
| | - Yuwei Wang
- SFA Key Laboratory of Bamboo and Rattan Science and Technology, International Centre for Bamboo and Rattan, No. 8 Futong Dongdajie, Wangjing, Chaoyang District, Beijing, 100102, China
| | - Yaoyao Zhang
- SFA Key Laboratory of Bamboo and Rattan Science and Technology, International Centre for Bamboo and Rattan, No. 8 Futong Dongdajie, Wangjing, Chaoyang District, Beijing, 100102, China
| | - Hang Xun
- SFA Key Laboratory of Bamboo and Rattan Science and Technology, International Centre for Bamboo and Rattan, No. 8 Futong Dongdajie, Wangjing, Chaoyang District, Beijing, 100102, China
| | - Xi Yao
- SFA Key Laboratory of Bamboo and Rattan Science and Technology, International Centre for Bamboo and Rattan, No. 8 Futong Dongdajie, Wangjing, Chaoyang District, Beijing, 100102, China
| | - Feng Tang
- SFA Key Laboratory of Bamboo and Rattan Science and Technology, International Centre for Bamboo and Rattan, No. 8 Futong Dongdajie, Wangjing, Chaoyang District, Beijing, 100102, China.
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6
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Development and validation of a high-throughput online solid phase extraction - Liquid chromatography - Tandem mass spectrometry method for the detection of tetrodotoxin in human urine. Toxicon 2016; 119:64-71. [PMID: 27212629 DOI: 10.1016/j.toxicon.2016.05.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 05/13/2016] [Accepted: 05/18/2016] [Indexed: 01/07/2023]
Abstract
Tetrodotoxin (TTX) is an extremely potent paralytic toxin responsible for yearly illness and death around the world. A clinical measurement is necessary to confirm exposure because symptoms of TTX intoxication cannot be distinguished from other paralytic toxins. Our group has developed an online solid phase extraction hydrophilic interaction liquid chromatography (HILIC) method for the analysis of TTX in human urine with tandem mass spectrometry. The reportable range for the method was 2.80 - 249 ng/mL in urine with precision and accuracy within 15% as determined for all quality control samples. No isotopically-labeled internal standard is available for TTX; thus a surrogate internal standard, voglibose, was investigated to compensate for matrix effects and ionization suppression. However, upon evaluation, voglibose was ineffective for this purpose. This new online method rapidly identifies TTX, facilitating the work of public health authorities and providing support to monitoring programs worldwide.
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7
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Willenberg I, Ostermann AI, Giovannini S, Kershaw O, von Keutz A, Steinberg P, Schebb NH. Effect of acute and chronic DSS induced colitis on plasma eicosanoid and oxylipin levels in the rat. Prostaglandins Other Lipid Mediat 2015; 120:155-60. [DOI: 10.1016/j.prostaglandins.2015.04.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 03/28/2015] [Accepted: 04/07/2015] [Indexed: 11/26/2022]
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8
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Ostermann AI, Herbers J, Willenberg I, Chen R, Hwang SH, Greite R, Morisseau C, Gueler F, Hammock BD, Schebb NH. Oral treatment of rodents with soluble epoxide hydrolase inhibitor 1-(1-propanoylpiperidin-4-yl)-3-[4-(trifluoromethoxy)phenyl]urea (TPPU): Resulting drug levels and modulation of oxylipin pattern. Prostaglandins Other Lipid Mediat 2015; 121:131-7. [PMID: 26117215 DOI: 10.1016/j.prostaglandins.2015.06.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 06/03/2015] [Accepted: 06/09/2015] [Indexed: 11/29/2022]
Abstract
Epoxides from polyunsaturated fatty acids (PUFAs) are potent lipid mediators. In vivo stabilization of these epoxides by blockade of the soluble epoxide hydrolase (sEH) leads to anti-inflammatory, analgesic and normotensive effects. Therefore, sEH inhibitors (sEHi) are a promising new class of drugs. Herein, we characterized pharmacokinetic (PK) and pharmacodynamic properties of a commercially available potent sEHi 1-(1-propanoylpiperidin-4-yl)-3-[4-(trifluoromethoxy)phenyl]urea (TPPU). Cell culture studies suggest its high absorption and metabolic stability. Following administration in drinking water to rats (0.2, 1, and 5mg TPPU/L with 0.2% PEG400), TPPU's blood concentration increased dose dependently within the treatment period to reach an almost steady state after 8 days. TPPU was found in all the tissues tested. The linoleic epoxide/diol ratios in most tissues were dose dependently increased, indicating significant sEH inhibition. Overall, administration of TPPU with the drinking water led to systemic distribution as well as high drug levels and thus makes chronic sEH inhibition studies possible.
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Affiliation(s)
- Annika I Ostermann
- University of Veterinary Medicine Hannover, Institute for Food Toxicology and Analytical Chemistry, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Jan Herbers
- University of Veterinary Medicine Hannover, Institute for Food Toxicology and Analytical Chemistry, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Ina Willenberg
- University of Veterinary Medicine Hannover, Institute for Food Toxicology and Analytical Chemistry, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Rongjun Chen
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Sung Hee Hwang
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Robert Greite
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Christophe Morisseau
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Faikah Gueler
- Department of Nephrology, Hannover Medical School, Hannover, Germany
| | - Bruce D Hammock
- Department of Entomology and Nematology, and UC Davis Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Nils Helge Schebb
- University of Veterinary Medicine Hannover, Institute for Food Toxicology and Analytical Chemistry, Bischofsholer Damm 15, 30173 Hannover, Germany; University of Wuppertal, Institute of Food Chemistry, Wuppertal, Germany.
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9
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Willenberg I, von Elsner L, Steinberg P, Schebb NH. Development of an online-SPE-LC-MS method for the investigation of the intestinal absorption of 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PHIP) and its bacterial metabolite PHIP-M1 in a Caco-2 Transwell system. Food Chem 2015; 166:537-543. [DOI: 10.1016/j.foodchem.2014.06.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Revised: 04/17/2014] [Accepted: 06/08/2014] [Indexed: 10/25/2022]
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10
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Fan Y, Shen G, Li P, Xi X, Wu H, Tian H, Lu Y, Yin Z. A simple and automated online SPE-LC-MS/MS method for simultaneous determination of olanzapine, fluoxetine and norfluoxetine in human plasma and its application in therapeutic drug monitoring. RSC Adv 2015. [DOI: 10.1039/c5ra02489g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
An integration of sample pretreatment automation using online SPE technique could provide an easy to use, efficient, sensitive and high quality methods for TDM.
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Affiliation(s)
- Yiran Fan
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Guanghu Shen
- Tianjin AnDing Hospital
- Tianjin 300222
- P. R. China
| | - Ping Li
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Xiaonan Xi
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Haiting Wu
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Hongjun Tian
- Tianjin AnDing Hospital
- Tianjin 300222
- P. R. China
| | - Yaxin Lu
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Zheng Yin
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
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11
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Ostermann AI, Willenberg I, Schebb NH. Comparison of sample preparation methods for the quantitative analysis of eicosanoids and other oxylipins in plasma by means of LC-MS/MS. Anal Bioanal Chem 2014; 407:1403-14. [DOI: 10.1007/s00216-014-8377-4] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 11/21/2014] [Accepted: 11/27/2014] [Indexed: 10/24/2022]
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12
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Ostermann AI, Willenberg I, Weylandt KH, Schebb NH. Development of an Online-SPE–LC–MS/MS Method for 26 Hydroxylated Polyunsaturated Fatty Acids as Rapid Targeted Metabolomics Approach for the LOX, CYP, and Autoxidation Pathways of the Arachidonic Acid Cascade. Chromatographia 2014. [DOI: 10.1007/s10337-014-2768-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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13
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Willenberg I, Michael M, Wonik J, Bartel LC, Empl MT, Schebb NH. Investigation of the absorption of resveratrol oligomers in the Caco-2 cellular model of intestinal absorption. Food Chem 2014; 167:245-50. [PMID: 25148985 DOI: 10.1016/j.foodchem.2014.06.103] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 05/22/2014] [Accepted: 06/25/2014] [Indexed: 01/21/2023]
Abstract
Resveratrol oligomers are biologically active polyphenols found in wine. No information about the bioavailability of these polyphenols is available. In order to discover if the resveratrol oligomers can pass the intestinal barrier, transport of the dimer ε-viniferin and the tetramer hopeaphenol was studied in the Caco-2 transwell system. A flux through the cell monolayer could neither be observed for ε-viniferin nor for hopeaphenol (apparent permeability coefficient (Papp)<1×10(-6)cms(-1)). In contrast, resveratrol showed a Papp of 11.9×10(-6)cms(-1). Nevertheless, about 16-30% of the oligomers were found in the lysed cellular fraction. This leads to the conclusion that the intestinal absorption rate of the two resveratrol oligomers, ε-viniferin and hopeaphenol, is low and negligible when compared to resveratrol. Therefore, it is unlikely that the oligomers could elicit a systemic biological effect after dietary intake. However, the compounds may act locally on the intestinal epithelium.
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Affiliation(s)
- Ina Willenberg
- University of Veterinary Medicine Hannover, Institute of Food Toxicology and Analytical Chemistry, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Maria Michael
- University of Veterinary Medicine Hannover, Institute of Food Toxicology and Analytical Chemistry, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Jasmin Wonik
- University of Veterinary Medicine Hannover, Institute of Food Toxicology and Analytical Chemistry, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Laura C Bartel
- University of Veterinary Medicine Hannover, Institute of Food Toxicology and Analytical Chemistry, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Michael T Empl
- University of Veterinary Medicine Hannover, Institute of Food Toxicology and Analytical Chemistry, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Nils Helge Schebb
- University of Veterinary Medicine Hannover, Institute of Food Toxicology and Analytical Chemistry, Bischofsholer Damm 15, 30173 Hannover, Germany.
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14
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Liu L, Wen Y, Liu K, Sun L, Lu Y, Yin Z. Simultaneous determination of a broad range of cardiovascular drugs in plasma with a simple and efficient extraction/clean up procedure and chromatography-mass spectrometry analysis. RSC Adv 2014. [DOI: 10.1039/c4ra01045k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
A simple, easy to use and efficient method was described for simultaneous determination of ten cardiovascular drugs with a broad range of physicochemical properties in rat plasma via online SPE and HPLC-MS/MS.
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Affiliation(s)
- Lei Liu
- College of Pharmacy & State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071, PR China
| | - Yabin Wen
- College of Life Science
- Nankai University
- Tianjin 300071, PR China
| | - Kangning Liu
- College of Pharmacy & State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071, PR China
| | - Liang Sun
- College of Pharmacy & State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071, PR China
| | - Yaxin Lu
- College of Pharmacy & State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071, PR China
| | - Zheng Yin
- College of Pharmacy & State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Tianjin 300071, PR China
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15
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Liu L, Wen YB, Liu KN, Sun L, Wu M, Han GF, Lu YX, Wang QM, Yin Z. Optimization of on-line solid phase extraction and HPLC conditions using response surface methodology for determination of WM-5 in mouse plasma and its application to pharmacokinetic study. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 923-924:8-15. [PMID: 23454303 DOI: 10.1016/j.jchromb.2013.01.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 01/22/2013] [Accepted: 01/24/2013] [Indexed: 10/27/2022]
Abstract
Response surface methodology (RSM) was utilized for rapid and systematic optimization of on-line solid-phase extraction (SPE) parameters to maximize the response and separation of WM-5. The optimization was performed with Box-Behnken designs. Four major parameters were investigated for their contributions to the response and separation of WM-5, with a total of 29 experiments being performed for each instrument, respectively. Quantitative determination of WM-5 in mouse plasma was performed to evaluate the statistical significance of the parameters on chromatographic response. A fully automated on-line SPE and high-performance liquid chromatography (HPLC) with diode array detection (DAD) method was developed for the determination of WM-5 in mouse plasma. Calibration curve with good linearity (r=0.9989) was obtained in the range of 20-4000 ng/mL in mouse plasma. The limit of detection (LOD) and lower limit of quantification (LLOQ) of the assay were 6 ng/mL and 20 ng/mL, respectively. The overall intra-day and the inter-day variations were less than 1.90%. The recovery of the method was in the range of 93.74-96.33% with RSD less than 3.06%. The optimized method demonstrated good performance in terms of specificity, LLOQ, linearity, recovery, precision and accuracy, and was successfully applied to quantify WM-5 in mouse plasma to support the pharmacokinetic study.
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Affiliation(s)
- Lei Liu
- College of Pharmacy and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, PR China
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16
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Abstract
New analytical platforms have been developed in response to the need for attaining increased peak capacity for multicomponent complex analysis with higher sensitivity and characterization of the analytes, and high-throughput capabilities. This review outlines the fundamental principles of target and comprehensive 2D LC method development and encompasses applications of LC–LC and LC × LC coupled to MS in bioanalysis using a variety of online analytical procedures. It also provides a rationale for the usage of the most employed mass analyzers and ionization sources on these platforms.
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17
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Nováková L. Challenges in the development of bioanalytical liquid chromatography-mass spectrometry method with emphasis on fast analysis. J Chromatogr A 2012; 1292:25-37. [PMID: 22999195 DOI: 10.1016/j.chroma.2012.08.087] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 08/26/2012] [Accepted: 08/29/2012] [Indexed: 01/21/2023]
Abstract
The development of bioanalytical methods has become more and more challenging over the past years due to very demanding requirements in terms of method reliability, sensitivity, speed of analysis and sample throughput. LC-MS/MS has established itself as a method of choice for routine analysis of biological materials. A development of such method consists of several steps including sample preparation and clean-up step, efficient chromatographic separation, sensitive and selective detection of analytes in complex matrices, a choice of convenient data processing and calibration approach and finally method validation. Each of these steps has its own constraints and challenges, which are discussed in detail in this review. Novel and modern approaches in sample preparation, chromatography and detection are especially emphasized. Attention is paid to proper calibration approach and matrix effects that can seriously affect method accuracy and precision.
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Affiliation(s)
- Lucie Nováková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
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Couchman L. Turbulent flow chromatography in bioanalysis: a review. Biomed Chromatogr 2012; 26:892-905. [DOI: 10.1002/bmc.2769] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Accepted: 05/07/2012] [Indexed: 12/15/2022]
Affiliation(s)
- Lewis Couchman
- Toxicology Unit, Department of Clinical Biochemistry; King's College Hospital; Denmark Hill; London; SE5 9RS
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Schebb NH, Ahn KC, Dong H, Gee SJ, Hammock BD. Whole blood is the sample matrix of choice for monitoring systemic triclocarban levels. CHEMOSPHERE 2012; 87:825-7. [PMID: 22273184 PMCID: PMC3538789 DOI: 10.1016/j.chemosphere.2011.12.077] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 12/22/2011] [Accepted: 12/30/2011] [Indexed: 05/22/2023]
Abstract
The antibacterial triclocarban (TCC) concentrates in the cellular fraction of blood. Consequently, plasma levels are at least two-fold lower than the TCC amount present in blood. Utilizing whole blood sampling, a low but significant absorption of TCC from soap during showering is demonstrated for a small group of human subjects.
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Affiliation(s)
- Nils Helge Schebb
- Institute of Toxicology and Chemical Analysis, University of Veterinary Medicine, Hannover, Germany
| | - Ki Chang Ahn
- Department of Entomology and Cancer Center, University of California, Davis, CA 95616, United States
| | - Hua Dong
- Department of Entomology and Cancer Center, University of California, Davis, CA 95616, United States
| | - Shirley J. Gee
- Department of Entomology and Cancer Center, University of California, Davis, CA 95616, United States
| | - Bruce D. Hammock
- Department of Entomology and Cancer Center, University of California, Davis, CA 95616, United States
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Andersen D, Rasmussen B, Linnet K. Validation of a Fully Automated Robotic Setup for Preparation of Whole Blood Samples for LC-MS Toxicology Analysis. J Anal Toxicol 2012; 36:280-7. [DOI: 10.1093/jat/bks014] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ajayakumar P, Chanda D, Pal A, Singh MP, Samad A. FT-NIR spectroscopy for rapid and simple determination of nimesulide in rabbit plasma for pharmacokinetic analysis. J Pharm Biomed Anal 2012; 58:157-62. [DOI: 10.1016/j.jpba.2011.09.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 09/19/2011] [Accepted: 09/19/2011] [Indexed: 12/01/2022]
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Schebb NH, Flores I, Kurobe T, Franze B, Ranganathan A, Hammock BD, Teh S. Bioconcentration, metabolism and excretion of triclocarban in larval Qurt medaka (Oryzias latipes). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2011; 105:448-54. [PMID: 21872556 PMCID: PMC3236035 DOI: 10.1016/j.aquatox.2011.07.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 07/19/2011] [Accepted: 07/29/2011] [Indexed: 05/02/2023]
Abstract
The antimicrobial triclocarban (TCC) is frequently found in personal care products and commonly observed in surface waters and sediments. Due to its long environmental persistence TCC accumulates in sewage sludge. It also shows a high unintended biological activity as a potent inhibitor of the soluble epoxide hydrolase (sEH) and may be an endocrine disruptor. In this study, we investigated bioconcentration, metabolism and elimination of TCC in fish using medaka (Oryzias latipes) as a model. Medaka larvae (7 ± 1 days post hatching) were exposed to 63 nM (20 μg/L) TCC water for 24h. The LC-MS/MS analysis of water and tissues provided bioconcentration of TCC and its metabolites in fish body and rapid excretion into culture water. Results from tissue samples showed a tissue concentration of 34 μmol/kg and a log bioconcentration factor (BCF) of 2.86. These results are slightly lower than previous findings in snails and algae. A significant portion of the absorbed TCC was oxidatively metabolized by the fish to hydroxylated products. These metabolites underwent extensive phase II metabolism to yield sulfate and glucuronic acid conjugates. The most abundant metabolite in fish tissue was the glucuronide of 2'-OH-TCC. Elimination of TCC after transferring the fish to fresh water was rapid, with a half-life of 1h. This study shows that larval medaka metabolize TCC similarly to mammals. The rapid rate of metabolism results in a lower bioconcentration than calculated from the octanol-water coefficient of TCC.
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Affiliation(s)
- Nils Helge Schebb
- University of Veterinary Medicine Hannover, Institute of Food Toxicology and Analytical Chemistry, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Ida Flores
- University of California, Davis, Aquatic Health Program, Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, One Shields Avenue, 95616 Davis, California, USA
| | - Tomofumi Kurobe
- University of California, Davis, Aquatic Health Program, Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, One Shields Avenue, 95616 Davis, California, USA
| | - Bastian Franze
- University of California, Davis, Department of Entomology and Cancer Center, One Shields Avenue, 95616 Davis, California, USA
| | - Anupama Ranganathan
- University of California, Davis, Department of Entomology and Cancer Center, One Shields Avenue, 95616 Davis, California, USA
| | - Bruce D. Hammock
- University of California, Davis, Department of Entomology and Cancer Center, One Shields Avenue, 95616 Davis, California, USA
| | - Swee Teh
- University of California, Davis, Aquatic Health Program, Department of Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, One Shields Avenue, 95616 Davis, California, USA
- Corresponding author: Swee Teh, Department of Anatomy, Physiology and Cell Biology, Department of Entomology, Aquatic Health Program, University of California at Davis, One Shields Avenue, Davis, CA 95616 USA, Tel: +1 530 754 8183, Fax: +1 530 752 7690,
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Schebb NH, Inceoglu B, Ahn KC, Morisseau C, Gee S, Hammock BD. Investigation of human exposure to triclocarban after showering and preliminary evaluation of its biological effects. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2011; 45:3109-15. [PMID: 21381656 PMCID: PMC3470465 DOI: 10.1021/es103650m] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The antibacterial soap additive triclocarban (TCC) is widely used in personal care products. TCC has a high environmental persistence. We developed and validated a sensitive online solid-phase extraction-LC-MS/MS method to rapidly analyze TCC and its major metabolites in urine and other biological samples to assess human exposure. We measured human urine concentrations 0-72 h after showering with a commercial bar soap containing 0.6% TCC. The major route of renal elimination was excretion as N-glucuronides. The absorption was estimated at 0.6% of the 70±15 mg of TCC in the soap used. The TCC-N-glucuronide urine concentration varied widely among the subjects, and continuous daily use of the soap led to steady state levels of excretion. In order to assess potential biological effects arising from this exposure, we screened TCC for the inhibition of human enzymes in vitro. We demonstrate that TCC is a potent inhibitor of the enzyme soluble epoxide hydrolase (sEH), whereas TCC's major metabolites lack strong inhibitory activity. Topical administration of TCC at similar levels to rats in a preliminary in vivo study, however, failed to alter plasma biomarkers of sEH activity. Overall the analytical strategy described here revealed that use of TCC soap causes exposure levels that warrant further evaluation.
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Affiliation(s)
- Nils Helge Schebb
- University of California, Davis, Department of Entomology and Cancer Center, One Shields Avenue, 95616 Davis, California, USA
| | - Bora Inceoglu
- University of California, Davis, Department of Entomology and Cancer Center, One Shields Avenue, 95616 Davis, California, USA
| | - Ki Chang Ahn
- University of California, Davis, Department of Entomology and Cancer Center, One Shields Avenue, 95616 Davis, California, USA
| | - Christophe Morisseau
- University of California, Davis, Department of Entomology and Cancer Center, One Shields Avenue, 95616 Davis, California, USA
| | - Shirley Gee
- University of California, Davis, Department of Entomology and Cancer Center, One Shields Avenue, 95616 Davis, California, USA
| | - Bruce D. Hammock
- University of California, Davis, Department of Entomology and Cancer Center, One Shields Avenue, 95616 Davis, California, USA
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