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He D, Adachi K, Hashizume D, Nakamura R. Copper sulfide mineral performs non-enzymatic anaerobic ammonium oxidation through a hydrazine intermediate. Nat Chem 2024:10.1038/s41557-024-01537-6. [PMID: 38789556 DOI: 10.1038/s41557-024-01537-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 04/16/2024] [Indexed: 05/26/2024]
Abstract
Anaerobic ammonium oxidation (anammox)-the biological process that activates ammonium with nitrite-is responsible for a significant fraction of N2 production in marine environments. Despite decades of biochemical research, however, no synthetic models capable of anammox have been identified. Here we report that a copper sulfide mineral replicates the entire biological anammox pathway catalysed by three metalloenzymes. We identified a copper-nitrosonium {CuNO}10 complex, formed by nitrite reduction, as the oxidant for ammonium oxidation that leads to heterolytic N-N bond formation from nitrite and ammonium. Similar to the biological process, N2 production was mediated by the highly reactive intermediate hydrazine, one of the most potent reductants in nature. We also found another pathway involving N-N bond heterocoupling for the formation of hybrid N2O, a potent greenhouse gas with a unique isotope composition. Our study represents a rare example of non-enzymatic anammox reaction that interconnects six redox states in the abiotic nitrogen cycle.
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Affiliation(s)
- Daoping He
- Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo, Japan.
- Biofunctional Catalyst Research Team, RIKEN Center for Sustainable Resource Science, Saitama, Japan.
| | - Kiyohiro Adachi
- Materials Characterization Support Team, RIKEN Center for Emergent Matter Science, Saitama, Japan
| | - Daisuke Hashizume
- Materials Characterization Support Team, RIKEN Center for Emergent Matter Science, Saitama, Japan
| | - Ryuhei Nakamura
- Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo, Japan.
- Biofunctional Catalyst Research Team, RIKEN Center for Sustainable Resource Science, Saitama, Japan.
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2
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Karuppiah V, Natarajan S, Gangatharan M, Munirah FA, Noorah A, Thangavel K. Development of siderophore based rhizobacterial consortium for the mitigation of biotic and abiotic environmental stresses in tomatoes: An in vitro and in planta approach. J Appl Microbiol 2022; 133:3276-3287. [PMID: 35579173 DOI: 10.1111/jam.15625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 04/08/2022] [Accepted: 05/12/2022] [Indexed: 11/30/2022]
Abstract
AIM Tomato associated plant-growth promoting rhizosphere bacteria were screened for effective antagonistic activity against the fungal vascular wilt pathogens; tolerance to heavy metals; and enhancing the bioavailability of iron for tomato plants through in vitro and in vivo approaches. METHODS AND RESULTS Among the 121 rhizobacteria screened for siderophores, 25 isolates were observed to be siderophore producers and out of these, seven isolates chelate copper and iron thus exhibiting in vitro antagonism against the virulent strains of Fusarium oxysporum f. sp. lycopersici MTCC10270 (Fol), Fusarium equiseti MFol, and Sarocladium sp. SWL isolated from infected tomatoes. Pseudomonas stutzeri KRP8 was identified to be the most potent strain among the siderophore producers and its siderophores were chemically characterized by mass spectra as metal bound and metal-free forms. Upon bio-inoculation of fortified bacterial consortium (siderozote) into the rhizosphere of vermiculite pot cultured tomatoes supplied with varying concentrations of iron and copper ions, we observed in planta growth improvements, antagonism, enhancement of bioavailability of iron and heavy metal tolerance using Inductively Coupled Plasma-Optical Emission Spectrometry. CONCLUSION AND SIGNIFICANCE OF THE STUDY Our rhizobacterial consortium provides an opportunity for soil reclamation through an ecofriendly method for a heavy metal-free agricultural landscape.
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Affiliation(s)
- Vijay Karuppiah
- Department of Microbiology, Science Campus, Alagappa University, Karaikudi, TN, India
| | - Suganthy Natarajan
- Department of Nanoscience and Technology, Science Campus, Alagappa University, Karaikudi, TN, India
| | | | - F Aldayel Munirah
- Biological Sciences Department, College of Science, King Faisal University, Saudi Arabia
| | - Alsowayeh Noorah
- Department of Biology, College of Education (Majmaah), Majmaah University, Al-Majmaah, Saudi Arabia
| | - Kavitha Thangavel
- Department of Microbiology, Science Campus, Alagappa University, Karaikudi, TN, India
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3
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Determination of 15N/ 14N of Ammonium, Nitrite, Nitrate, Hydroxylamine, and Hydrazine Using Colorimetric Reagents and Matrix-Assisted Laser Desorption Ionization-Time-of-Flight Mass Spectrometry (MALDI-TOF MS). Appl Environ Microbiol 2022; 88:e0241621. [PMID: 35285242 DOI: 10.1128/aem.02416-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In the nitrogen (N) cycle, nitrogenous compounds are chemically and biologically converted to various aqueous and gaseous N species. The 15N-labeling approach is a powerful culture-dependent technique to obtain insights into the complex nitrogen transformation reactions that occur in cultures. In the 15N-labeling approach, the fates of supplemented 15N- and/or unlabeled gaseous and aqueous compounds are tracked by mass spectrometry (MS) analysis, whereas MS analysis of aqueous N species requires laborious sample preparation steps and is performed using isotope-ratio mass spectrometry, which requires an expensive mass spectrometer. We developed a simple and high-throughput MS method for determining the 15N atoms percent of NH4+, NO2-, NO3-, NH2OH, and N2H4, where liquid samples (<0.5 mL) were mixed with colorimetric reagents (naphthylethylenediamine for NO2-, indophenol for NH4+, and p-aminobenzaldehyde for N2H4), and the mass spectra of the formed N complex dyes were obtained by matrix-assisted laser desorption ionization-time-of-flight (MALDI-TOF) MS. NH2OH and NO3- were chemically converted to NO2- by iodine oxidation and copper/hydrazine reduction reaction, respectively, prior to the above colorimetric reaction. The intensity of the isotope peak (M + 1 or M + 2) increased when the N complex dye was formed by coupling with a 15N-labeled compound, and a linear relationship was found between the determined 15N/14N peak ratio and 15N atom% for the tested N species. The developed method was applied to bacterial cultures to examine their N-transformation reactions, enabling us to observe the occurrence of NO2- oxidation and NO3- reduction in a hypoxic Nitrobacter winogradskyi culture. IMPORTANCE 15N/14N analysis for aqueous N species is a powerful tool for obtaining insights into the global N cycle, but the procedure is cumbersome and laborious. The combined use of colorimetric reagents and MALDI-TOF MS, designated color MALDI-TOF MS, enabled us to determine the 15N atom% of common aqueous N species without laborious sample preparation and chromatographic separation steps; for instance, the 15N atom% of NO2- can be determined from >1,000 liquid samples daily at <$1 (U.S.) per 384 samples for routine analysis. This convenient MS method is a powerful tool that will advance our ability to explore the N-transformation reactions that occur in various environments and biological samples.
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4
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Shaw DR, Ali M, Katuri KP, Gralnick JA, Reimann J, Mesman R, van Niftrik L, Jetten MSM, Saikaly PE. Extracellular electron transfer-dependent anaerobic oxidation of ammonium by anammox bacteria. Nat Commun 2020; 11:2058. [PMID: 32345973 PMCID: PMC7188810 DOI: 10.1038/s41467-020-16016-y] [Citation(s) in RCA: 115] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 04/08/2020] [Indexed: 12/05/2022] Open
Abstract
Anaerobic ammonium oxidation (anammox) bacteria contribute significantly to the global nitrogen cycle and play a major role in sustainable wastewater treatment. Anammox bacteria convert ammonium (NH4+) to dinitrogen gas (N2) using intracellular electron acceptors such as nitrite (NO2−) or nitric oxide (NO). However, it is still unknown whether anammox bacteria have extracellular electron transfer (EET) capability with transfer of electrons to insoluble extracellular electron acceptors. Here we show that freshwater and marine anammox bacteria couple the oxidation of NH4+ with transfer of electrons to insoluble extracellular electron acceptors such as graphene oxide or electrodes in microbial electrolysis cells. 15N-labeling experiments revealed that NH4+ was oxidized to N2 via hydroxylamine (NH2OH) as intermediate, and comparative transcriptomics analysis revealed an alternative pathway for NH4+ oxidation with electrode as electron acceptor. Complete NH4+ oxidation to N2 without accumulation of NO2− and NO3− was achieved in EET-dependent anammox. These findings are promising in the context of implementing EET-dependent anammox process for energy-efficient treatment of nitrogen. Bacteria capable of anaerobic ammonium oxidation (anammox) produce half of the nitrogen gas in the atmosphere, but much of their physiology is still unknown. Here the authors show that anammox bacteria are capable of a novel mechanism of ammonium oxidation using extracellular electron transfer.
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Affiliation(s)
- Dario R Shaw
- Water Desalination and Reuse Center (WDRC), Biological and Environmental Science & Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Muhammad Ali
- Water Desalination and Reuse Center (WDRC), Biological and Environmental Science & Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Krishna P Katuri
- Water Desalination and Reuse Center (WDRC), Biological and Environmental Science & Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Jeffrey A Gralnick
- BioTechnology Institute and Department of Plant and Microbial Biology, University of Minnesota, Twin Cities, St. Paul, MN, 55108, USA
| | - Joachim Reimann
- Department of Microbiology, Institute for Water and Wetland Research (IWWR), Faculty of Science, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Rob Mesman
- Department of Microbiology, Institute for Water and Wetland Research (IWWR), Faculty of Science, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Laura van Niftrik
- Department of Microbiology, Institute for Water and Wetland Research (IWWR), Faculty of Science, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Mike S M Jetten
- Department of Microbiology, Institute for Water and Wetland Research (IWWR), Faculty of Science, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Pascal E Saikaly
- Water Desalination and Reuse Center (WDRC), Biological and Environmental Science & Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
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5
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The past, present and future perspectives of matrix metalloproteinase inhibitors. Pharmacol Ther 2020; 207:107465. [DOI: 10.1016/j.pharmthera.2019.107465] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/13/2019] [Indexed: 12/12/2022]
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6
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Kumar T, Xavier N, Ramya M. A High-Performance Liquid Chromatography Method for Determination of Genotoxic Impurity Hydroxylamine in Drug Substances. J Chromatogr Sci 2019; 57:63-70. [PMID: 30371764 DOI: 10.1093/chromsci/bmy082] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Indexed: 11/14/2022]
Abstract
Hydroxylamine (NH2OH) is widely used in pharmaceutical intermediates and final drug substances synthesis. Since hydroxylamine is a well-known genotoxic impurity compound that needs to be controlled down to ppm level in pharmaceutical compounds. It is very difficult to detect using conventional analytical techniques due to its physical-chemical properties like the lack of chromophore, low molecular weight, the absence of carbon atom and high polarity. In addition to that, the analysis of the pharmaceutical samples encounters considerable obstruction from matrix components that greatly overshadow the response of hydroxylamine. This report describes a simple, selective and sensitive high-performance liquid chromatography (HPLC)-UV derivatization method for the determination of hydroxylamine in drug substances. The HPLC method was detected up to 0.01 ppm of hydroxylamine with S/N > 3.0 and quantified up to 0.03 ppm of hydroxylamine with S/N ratio > 10.0. This validated method can be applied as a generic method to detect the hydroxylamine for pharmaceutical process control and drug substance release.
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Affiliation(s)
| | - N Xavier
- Department of Chemistry, St Josephs College, Trichirappalli, India
| | - Mohandass Ramya
- Department of Genetic Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, India
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7
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Kumar T, Ramya M, Srinivasan V, Xavier N. A Simple and Direct LC-MS Method for Determination of Genotoxic Impurity Hydroxylamine in Pharmaceutical compounds. J Chromatogr Sci 2017; 55:683-689. [PMID: 28369177 DOI: 10.1093/chromsci/bmx019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 02/25/2017] [Indexed: 11/12/2022]
Abstract
Hydroxylamine is a known genotoxic impurity compound that needs to be controlled down to ppm level in pharmaceutical processes. It is difficult to detect using conventional analytical techniques due to its physio-chemical properties like lack of chromophore, low molecular weight, absence of carbon atom and high polarity. In addition to that, analysis of the pharmaceutical samples encounters considerable obstruction from matrix components that greatly overshadow the response of hydroxylamine. This study describes a simple, sensitive and direct Liquid Chromatographic-Mass Spectrometric method (LC-MS) for detection of hydroxylamine in pharmaceutical compounds. The LC-MS method was detected up to 0.008 ppm of hydroxylamine with S/N > 3.0 and quantified up to 0.025 ppm of hydroxylamine with S/N ratio >10.0. This validated method can be applied as a generic method to detect the hydroxylamine for pharmaceutical process control and drug substance release.
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Affiliation(s)
- Thangarathinam Kumar
- Analytical Research and Development Division, Piramal Enterprises Limited, Chennai 600057, India.,Department of Chemistry, St Josephs College, Trichirappalli 620001, India
| | - Mohandass Ramya
- Department of Genetic Engineering, SRM University, Kattankulathur, Chennai 603203, India
| | - Viswanathan Srinivasan
- Analytical Research and Development Division, Piramal Enterprises Limited, Chennai 600057, India
| | - N Xavier
- Department of Chemistry, St Josephs College, Trichirappalli 620001, India
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8
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Liu G, Li X, Han B, Chen L, Zhu L, Campos LC. Efficient degradation of sulfamethoxazole by the Fe(II)/HSO 5- process enhanced by hydroxylamine: Efficiency and mechanism. JOURNAL OF HAZARDOUS MATERIALS 2017; 322:461-468. [PMID: 27745962 DOI: 10.1016/j.jhazmat.2016.09.062] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 09/25/2016] [Accepted: 09/26/2016] [Indexed: 05/08/2023]
Abstract
Fenton or Fenton-like processes have been regarded as feasible methods to degrade a wide variety of contaminants by generating reactive species, but the efficiency is still challenged by the slow transformation from Fe(III) to Fe(II) and pH. This study employed hydroxylamine (HA) to improve the oxidation efficiency of Fe(II)/HSO5- (Fe(II)/PMS) process, by selecting sulfamethoxazole (SMX) as the target compound. The degradation efficiency and mechanism of SMX by the HA/Fe(II)/PMS process were elucidated for the first time. Compared with Fe(II)/PMS process, the HA/Fe(II)/PMS process showed about 4 times higher degradation efficiency of SMX at pH 3.0. The analysis of steady-state concentration of Fe species indicated that HA enhanced the transformation of Fe(III) to Fe(II), sustaining the rapid Fenton-like reactions. Both sulfate radicals and hydroxyl radicals accounted for the degradation of SMX, with the latter regarded as the dominant reactive species. Degradation intermediates of SMX were further analyzed, and three main transformation pathways were thus proposed. The HA/Fe(II)/PMS process was also effective in the removal of SMX and total organic carbon from real pharmaceutical wastewater. This work would broaden the scope of application of Fenton and Fenton-like processes enhanced by HA in contaminants treatment.
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Affiliation(s)
- Guifang Liu
- College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, 150001, China; Department of Civil, Engineering and Geomatic Engineering, University College London (UCL), London, WC1E 6BT, UK.
| | - Xuchun Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China.
| | - Bangjun Han
- School of Civil Engineering, Heilongjiang University, Harbin, 150080, China; National Engineering Research Center of Urban Water Resources, Harbin, 150090, China
| | - Liwei Chen
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, 210037, China
| | - Linan Zhu
- College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin, 150001, China
| | - Luiza C Campos
- Department of Civil, Engineering and Geomatic Engineering, University College London (UCL), London, WC1E 6BT, UK
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9
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Oshiki M, Ali M, Shinyako-Hata K, Satoh H, Okabe S. Hydroxylamine-dependent anaerobic ammonium oxidation (anammox) by “Candidatus
Brocadia sinica”. Environ Microbiol 2016; 18:3133-43. [DOI: 10.1111/1462-2920.13355] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 04/21/2016] [Indexed: 12/01/2022]
Affiliation(s)
- Mamoru Oshiki
- Department of Civil Engineering; National Institute of Technology, Nagaoka College; Nagaoka Niigata 940-8532 Japan
| | - Muhammad Ali
- Division of Environmental Engineering, Faculty of Engineering; Hokkaido University; North-13, West-8 Sapporo Hokkaido 060-8628 Japan
- Water Desalination and Reuse Center (WDRC), Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST),Thuwal; 23955-6900 Saudi Arabia
| | - Kaori Shinyako-Hata
- Tokyo Engineering Consultants Co., Ltd., Kasumigaseki, Chioyadaku, Tokyo 100-0013, Japan
| | - Hisashi Satoh
- Division of Environmental Engineering, Faculty of Engineering; Hokkaido University; North-13, West-8 Sapporo Hokkaido 060-8628 Japan
| | - Satoshi Okabe
- Division of Environmental Engineering, Faculty of Engineering; Hokkaido University; North-13, West-8 Sapporo Hokkaido 060-8628 Japan
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10
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Chen L, Li X, Zhang J, Fang J, Huang Y, Wang P, Ma J. Production of Hydroxyl Radical via the Activation of Hydrogen Peroxide by Hydroxylamine. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:10373-10379. [PMID: 26274915 DOI: 10.1021/acs.est.5b00483] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The production of the hydroxyl radical (HO·) is important in environmental chemistry. This study reports a new source of HO· generated solely from hydrogen peroxide (H2O2) activated by hydroxylamine (HA). Electron paramagnetic resonance analysis and the oxidation of a HO· probe, benzoic acid, were used to confirm the production of HO·. The production of HO· increased with increasing concentrations of either HA or H2O2 as well as decreasing pH. The second-order rate constant for the reaction was (2.2 ± 0.2) × 10(-4) M(-1) s(-1). HO· was probably produced in two steps: the activation of H2O2 by protonated HA and then reaction between the H2O2 and the intermediate protonated aminoxyl radical generated in the first step. Such a two-step oxidation can possibly be ascribed to the ionizable hydroxyl moiety in the molecular structure of HA, as is suggested by comparing the reactivity of a series of HA derivatives in HO· production. The results shed light on a previously unknown source of HO· formation, which broadens the understanding of its role in environmental processes.
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Affiliation(s)
- Liwei Chen
- College of Biology and the Environment, Nanjing Forestry University , Nanjing 210037, China
| | - Xuchun Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University , Hangzhou 310018, China
| | - Jing Zhang
- College of Architecture and Environment, Sichuan University , Chengdu 610065, China
| | - Jingyun Fang
- School of Environmental Science and Engineering, Sun Yat-sen University , Guangzhou 510275, China
| | - Yanmin Huang
- College of Biology and the Environment, Nanjing Forestry University , Nanjing 210037, China
| | - Ping Wang
- College of Biology and the Environment, Nanjing Forestry University , Nanjing 210037, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , Harbin 150090, China
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11
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Sheng H, Tang W, Yerabolu R, Kong JY, Williams PE, Zhang M, Kenttämaa HI. Mass spectrometric identification of the N-monosubstituted N-hydroxylamino functionality in protonated analytes via ion/molecule reactions in tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2015; 29:730-734. [PMID: 26406487 DOI: 10.1002/rcm.7154] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 01/24/2015] [Accepted: 01/24/2015] [Indexed: 06/05/2023]
Abstract
RATIONALE N-Monosubstituted hydroxylamines correspond to an important class of metabolites for many bioactive molecules. In this study, a tandem mass spectrometric method based on ion/molecule reactions was developed for the identification of compounds with the N-monosubstituted hydroxylamino functionality. METHODS The diagnostic ion/molecule reaction occurs between protonated analytes with 2-methoxypropene (MOP) inside a linear quadrupole ion trap mass spectrometer. RESULTS Most protonated compounds with N-monosubstituted and disubstituted hydroxylamino and oxime functional groups react with MOP via proton transfer and formation of a stable adduct in a linear quadrupole ion trap mass spectrometer. However, only protonated compounds with N-monosubstituted hydroxylamino groups form the characteristic MOP adduct-MeOH product. Possible mechanisms of this reaction are discussed. CONCLUSIONS A method based on functional group-selective ion/molecule reactions in a linear quadrupole ion trap mass spectrometer has been demonstrated to allow the identification of protonated compounds with the N-monosubstituted hydroxylamino functionality. Only N-monosubstituted hydroxylamines react with MOP via formation of an adduct that has eliminated methanol.
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Affiliation(s)
- Huaming Sheng
- Purdue University, Department of Chemistry, West Lafayette, IN, 47907, USA
| | - Weijuan Tang
- Purdue University, Department of Chemistry, West Lafayette, IN, 47907, USA
| | - Ravikiran Yerabolu
- Purdue University, Department of Chemistry, West Lafayette, IN, 47907, USA
| | - John Y Kong
- Purdue University, Department of Chemistry, West Lafayette, IN, 47907, USA
| | - Peggy E Williams
- Purdue University, Department of Chemistry, West Lafayette, IN, 47907, USA
| | | | - Hilkka I Kenttämaa
- Purdue University, Department of Chemistry, West Lafayette, IN, 47907, USA
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12
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Zou J, Ma J, Chen L, Li X, Guan Y, Xie P, Pan C. Rapid acceleration of ferrous iron/peroxymonosulfate oxidation of organic pollutants by promoting Fe(III)/Fe(II) cycle with hydroxylamine. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:11685-11691. [PMID: 24033112 DOI: 10.1021/es4019145] [Citation(s) in RCA: 337] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The reaction between ferrous iron (Fe(II)) with peroxymonosulfate (PMS) generates reactive oxidants capable of degrading refractory organic contaminants. However, the slow transformation from ferric iron (Fe(III)) back to Fe(II) limits its widespread application. Here, we added hydroxylamine (HA), a common reducing agent, into Fe(II)/PMS process to accelerate the transformation from Fe(III) to Fe(II). With benzoic acid (BA) as probe compound, the addition of HA into Fe(II)/PMS process accelerated the degradation of BA rapidly in the pH range of 2.0-6.0 by accelerating the key reactions, including the redox cycle of Fe(III)/Fe(II) and the generation of reactive oxidants. Both sulfate radicals and hydroxyl radicals were considered as the primary reactive oxidants for the degradation of BA in HA/Fe(II)/PMS process with the experiments of electron spin resonance and alcohols quenching. Moreover, HA was gradually degraded to N2, N2O, NO2 (−), and NO3 (−), while the environmentally friendly gas of N2 was considered as its major end product in the process. The present study might provide a promising idea based on Fe(II)/PMS process for the rapid degradation of refractory organic contaminants in water treatment.
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Affiliation(s)
- Jing Zou
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology , Harbin 150090, P.R. China
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13
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Chen L, Ma J, Li X, Zhang J, Fang J, Guan Y, Xie P. Strong enhancement on fenton oxidation by addition of hydroxylamine to accelerate the ferric and ferrous iron cycles. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2011; 45:3925-30. [PMID: 21469678 DOI: 10.1021/es2002748] [Citation(s) in RCA: 220] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The Fenton system generates reactive species with high oxidation potential such as hydroxyl radicals (HO(•)) or ferryl via the reaction between Fe (II) and H₂O₂. However, a number of drawbacks limit its widespread application including the accumulation of Fe (III) and the narrow pH range limits, etc. The aim of this study is to propose a much more efficient Fenton-HA system which is characterized by combining Fenton system with hydroxylamine (NH₂OH), a common reducing agent, to relieve the aforementioned drawbacks, with benzoic acid (BA) as the probe reagent. The presence of NH₂OH in Fenton's reagent accelerated the Fe (III)/Fe (II) redox cycles, leading to relatively steady Fe (II) recovery, thus, increased the pseudo first-order reaction rates and expanded the effective pH range up to 5.7. The HO(•) mechanism was confirmed to be dominating in the Fenton-HA system, and the generation of HO(•) was much faster and the amount of HO(•) formed was higher than that in the classical Fenton system. Furthermore, the major end products of NH₂OH in Fenton-HA system were supposed to be NO₃(-) and N₂O.
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Affiliation(s)
- Liwei Chen
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
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14
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Marques SM, Nuti E, Rossello A, Supuran CT, Tuccinardi T, Martinelli A, Santos MA. Dual inhibitors of matrix metalloproteinases and carbonic anhydrases: iminodiacetyl-based hydroxamate-benzenesulfonamide conjugates. J Med Chem 2008; 51:7968-79. [PMID: 19053764 DOI: 10.1021/jm800964f] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Matrix metalloproteinases (MMPs) and carbonic anhydrases (CAs) are two classes of zinc enzymes with different roles and catalytic targets, such as the degradation of most of the extracellular matrix (ECM) proteins and the regulation of the CO(2)/HCO(3)(-) equilibrium in the cells, respectively. Both families have isoforms which were proved to be involved in several stages of carcinogenic processes, and so the selective inhibition of these enzymes might be of interest in cancer therapy. We report herein the design, synthesis, and in vitro evaluation of a series of compounds possessing the iminodiacetic acid as the main backbone and two functional groups attached, namely, the hydroxamic acid and the arylsulfonamide (ArSO(2)NH(2)) moieties, to enable the inhibition of MMPs and CAs, respectively. These compounds were demonstrated to strongly inhibit both MMPs and CAs, some of them from the nanomolar to subnanomolar range. Furthermore, a docking study for MMPs was reported for the most promising compound in order to investigate its binding interactions with the different MMPs.
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Affiliation(s)
- Sérgio M Marques
- Centro de Química Estrutural, Instituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
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Kim HM, Oh SJ, Park SK, Han G, Kim K, Lee KS, Kang JS, Nam M, Lee K. In vitrometabolism of KBH-A40, a novelδ-lactam-based histone deacetylase (HDAC) inhibitor, in human liver microsomes and serum. Xenobiotica 2008; 38:281-93. [DOI: 10.1080/00498250701813222] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Swarnalatha S, Gopi R, Ganesh Kumar A, Selvi PK, Sekaran G. A novel amphiphilic nano hydrogel using ketene based polyester with polyacrylamide for controlled drug delivery system. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2008; 19:3005-3014. [PMID: 18389347 DOI: 10.1007/s10856-008-3430-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2007] [Accepted: 03/11/2008] [Indexed: 05/26/2023]
Abstract
A ketene based Low molecular weight polymer (LMKP) having ester functional group was prepared using glycine through surface initiated anionic polymerization. NMR, ATR-FTIR & SEC were used to characterize the LMKP. The LMKP and acrylamide (AAm) were co-polymerised in methyl ethyl ketone to yield semi-IPN nanohydrogels (NHG). Benzoyl peroxide (BPO) was used as an initiator and N,N-methylene bisacrylamide (MBA) as crosslinking agent. Formation of NHG was confirmed through frequency shift in LMKP and poly acrylamide (PAAm) in FTIR spectroscopy. Photon correlation spectroscopy reveals that the sizes of the NHG were in the range of 140-225 nm and Transmission Electron Micrograph (TEM) also confirms the nano dimension of NHG. Biocompatibility of the NHG was confirmed through the cytotoxicity analysis. The swelling and diffusion behaviour of NHG, prepared under various formulations, were evaluated. The swelling pattern of NHG was studied at different pH conditions. The drug delivery capacity of NHG was investigated using ciprofloxacin as a model drug. The drug release kinetics of NHG suggested their anomalous (non-fickian) behaviour.
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Affiliation(s)
- S Swarnalatha
- Department of Environmental Technology, Central Leather Research Institute, Adyar, Chennai, 600 020, Tamil Nadu, India
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17
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Matziari M, Dive V, Yiotakis A. Matrix metalloproteinase 11 (MMP-11; stromelysin-3) and synthetic inhibitors. Med Res Rev 2007; 27:528-52. [PMID: 16710861 DOI: 10.1002/med.20066] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Matrix metalloproteinase (MMP)-11, or Stromelysin 3, is a particular member of MMP family, a group of zinc-dependent endopeptidases involved in matrix degradation and tissue remodeling. Despite intense efforts since its first characterization 15 years ago, its role and target substrates in different diseases remain largely unknown. While mice with MMP-11 deficiency display no particular phenotype, analysis of different tumorigenesis models with these mice lead to the conclusion that MMP-11 promotes tumor development. In contrast with other MMPs, MMP-11 is unable to degrade any major extracellular matrix component and unlike most of other MMPs that are secreted as inactive proenzymes and activated extracellularly, MMP-11 is secreted under active form. MMP-11 may thus play a unique role in tissue remodeling processes, including those associated with tumor progression. Although MMP-11 and other MMPs have been considered as promising targets to combat cancer, a first series of clinical trials using broad-spectrum MMP inhibitors have not led to significant therapeutic benefits. These disappointing results highlight the need for better understanding of the exact role played by each MMP during the different stages of tumor progression. Among the different strategies to fill this gap, highly specific MMP inhibitors would be of great value. This review provides an update on the selectivity profile of phosphinic MMP-11 synthetic inhibitors developed and discusses the opportunities and limitations to identify inhibitors able to fully discriminate MMP-11 from the other MMPs.
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Affiliation(s)
- Magdalini Matziari
- Department of Chemistry, Laboratory of Organic Chemistry, University of Athens, Panepistimiopolis Zografou 15771, Athens, Greece
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18
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Huang J, Yakubu M, Kim-Shapiro DB, King SB. Rat liver-mediated metabolism of hydroxyurea to nitric oxide. Free Radic Biol Med 2006; 40:1675-81. [PMID: 16632127 DOI: 10.1016/j.freeradbiomed.2006.01.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2005] [Revised: 12/13/2005] [Accepted: 01/03/2006] [Indexed: 01/18/2023]
Abstract
Hydroxyurea is an approved treatment for sickle cell disease. Oxidation of hydroxyurea results in the formation of nitric oxide (NO), which also has drawn considerable interest as a sickle cell disease therapy. Although patients on hydroxyurea demonstrate elevated levels of nitric oxide-derived metabolites, little information regarding the site or mechanism of the in vivo conversion of hydroxyurea to nitric oxide exists. Chemiluminescence detection experiments show the ability of crude rat liver homogenate to convert hydroxyurea to nitrite/nitrate, evidence for NO production. Nitrite/nitrate form at therapeutic concentrations of hydroxyurea in a clinically relevant time frame. Electron paramagnetic resonance (EPR) studies show the formation of iron nitrosyl complexes during this incubation and experiments with labeled hydroxyurea show the NO derives from the drug. Gas chromatography-mass spectrometry measurements indicate the hydrolysis of hydroxyurea to hydroxylamine in this system. Incubation of hydroxylamine with crude rat liver homogenate also generates nitrite/nitrate and iron nitrosyl complexes. A line of evidence including inhibitor studies, EPR spectroscopy, and nitrite/nitrate detection identifies catalase as a possible oxidant for the conversion of hydroxyurea to NO. These results reveal the ability of liver tissue to convert hydroxyurea to nitric oxide and provide insight into the metabolism of this drug.
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Affiliation(s)
- Jinming Huang
- Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USA
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19
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Anandan SK, Ward JS, Brokx RD, Bray MR, Patel DV, Xiao XX. Mercaptoamide-based non-hydroxamic acid type histone deacetylase inhibitors. Bioorg Med Chem Lett 2005; 15:1969-72. [DOI: 10.1016/j.bmcl.2005.02.075] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2005] [Revised: 02/18/2005] [Accepted: 02/24/2005] [Indexed: 10/25/2022]
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20
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Cuniasse P, Devel L, Makaritis A, Beau F, Georgiadis D, Matziari M, Yiotakis A, Dive V. Future challenges facing the development of specific active-site-directed synthetic inhibitors of MMPs. Biochimie 2005; 87:393-402. [PMID: 15781327 DOI: 10.1016/j.biochi.2004.09.025] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2004] [Accepted: 09/23/2004] [Indexed: 11/24/2022]
Abstract
Despite a deep knowledge on the 3D-structure of several catalytic domains of MMPs, the development of highly specific synthetic active-site-directed inhibitors of MMPs, able to differentiate the different members of this protease family, remains a strong challenge. Due to the flexible nature of MMP active-site, the development of specific MMP inhibitors will need to combine sophisticated theoretical and experimental approaches to decipher in each MMP the specific structural and dynamic features that can be exploited to obtain the desired selectivity.
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Affiliation(s)
- P Cuniasse
- CEA, Département d'Ingénierie et d'Etudes des Protéines (DIEP), CE-Saclay, 91191 Gif/Yvette cedex, France
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21
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Dive V, Andarawewa KL, Boulay A, Matziari M, Beau F, Guerin E, Rousseau B, Yiotakis A, Rio MC. Dosing and scheduling influence the antitumor efficacy of a phosphinic peptide inhibitor of matrix metalloproteinases. Int J Cancer 2004; 113:775-81. [DOI: 10.1002/ijc.20459] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Guzowski JP, Golanoski C, Montgomery ER. A gas chromatographic method for the indirect determination of hydroxylamine in pharmaceutical preparations: conversion into nitrous oxide. J Pharm Biomed Anal 2003; 33:963-74. [PMID: 14656587 DOI: 10.1016/s0731-7085(03)00433-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A simple, sensitive, and selective headspace gas-chromatographic method has been developed for measuring hydroxylamine (HA) in a variety of sample matrices including pharmaceutical formulations. This procedure relies on converting HA into nitrous oxide (N2O), which is a single-step reaction that is carried out directly in a heated headspace vial. The gaseous products are then analyzed by headspace capillary gas chromatography. Several detection strategies were evaluated and electron capture provided the best sensitivity (4 parts-per-billion (ppb)) while the mass selective and thermal conductivity values were higher (14 ppb and 1.4 parts-per-million (ppm), respectively). The method's linear dynamic range spans two to four decades with a run-to-run precision that was better than 5% R.S.D. (n=7). The reagent concentrations (oxidant, buffer) strongly impact the N2O signal and the greatest response was obtained for solutions that contained equimolar amounts of reactants. HA was efficiently (98%) recovered from a sample matrix that contained only the active pharmaceutical ingredient (API) but the recovery was lower (83%) when excipients were present.
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Affiliation(s)
- J P Guzowski
- Bristol-Myers Squibb, Pharmaceutical Research Institute, 1 Squibb Drive, New Brunswick, NJ 08903, USA.
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23
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Fernando PN, Egwu IN, Hussain MS. Ion chromatographic determination of trace hydroxylamine in waste streams generated by a pharmaceutical reaction process. J Chromatogr A 2002; 956:261-70. [PMID: 12108660 DOI: 10.1016/s0021-9673(02)00145-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Hydroxylamine is a key raw material used in a synthetic drug process at Pharmacia. Since hydroxylamine is harmful to microorganisms, concentrations above 5 ppm could interfere with the biological sewage plant performance. This necessitated the development of a sensitive analytical method for detecting low levels of hydroxylamine in the waste streams generated from the pharmaceutical process. The present report describes a cation-exchange chromatographic method coupled with pulsed amperometric detection at a gold electrode for trace analysis of hydroxylamine. This method was evaluated by generating data on the parameters of specificity, precision, linearity, recovery and sensitivity.
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24
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Peng SX. Separation and identification methods for metalloproteinase inhibitors. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL SCIENCES AND APPLICATIONS 2001; 764:59-80. [PMID: 11817044 DOI: 10.1016/s0378-4347(01)00316-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Metalloproteinase inhibitors are being explored for the treatment of a wide variety of human diseases including cancers, arthritis, cardiovascular disorders, human immunodeficiency virus infection, and central nervous system illnesses. This review provides an overview of various analytical sample preparation, separation, detection, and identification techniques employed for the quantitative and qualitative determination of these inhibitor compounds. Special emphasis is placed on biological sample preparation by automated solid-phase extraction, liquid-liquid extraction, and protein precipitation by centrifugation or filtration. Other sample preparation methodologies are also evaluated. Applications of high-performance liquid chromatography. gas chromatography, and capillary electrophoresis to the quantitative determination of metalloproteinase inhibitors are described. Examples of qualitative analysis of metalloproteinase inhibitors by hyphenated liquid chromatography with mass spectrometry and nuclear magnetic resonance are also presented. The advantages and limitations of these separation and identification methodologies as well as other less frequently employed techniques are assessed and discussed.
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Affiliation(s)
- S X Peng
- The Procter & Gamble Company, Health Care Research Center, Mason, OH 45040, USA.
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