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Zanotelli MR, Miller JP, Wang W, Ortiz I, Tahon E, Bordeleau F, Reinhart-King CA. Tension directs cancer cell migration over fiber alignment through energy minimization. Biomaterials 2024; 311:122682. [PMID: 38959532 DOI: 10.1016/j.biomaterials.2024.122682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 06/06/2024] [Accepted: 06/23/2024] [Indexed: 07/05/2024]
Abstract
Cell migration during many fundamental biological processes including metastasis requires cells to traverse tissue with heterogeneous mechanical cues that direct migration as well as determine force and energy requirements for motility. However, the influence of discrete structural and mechanical cues on migration remains challenging to determine as they are often coupled. Here, we decouple the pro-invasive cues of collagen fiber alignment and tension to study their individual impact on migration. When presented with both cues, cells preferentially travel in the axis of tension against fiber alignment. Computational and experimental data show applying tension perpendicular to alignment increases potential energy stored within collagen fibers, lowering requirements for cell-induced matrix deformation and energy usage during migration compared to motility in the direction of fiber alignment. Energy minimization directs migration trajectory, and tension can facilitate migration against fiber alignment. These findings provide a conceptual understanding of bioenergetics during migration through a fibrous matrix.
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Affiliation(s)
- Matthew R Zanotelli
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA; Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Joseph P Miller
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, 14853, USA
| | - Wenjun Wang
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Ismael Ortiz
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, 37235, USA
| | - Elise Tahon
- CHU de Québec-Université Laval Research Center (Oncology Division), Université Laval Cancer Research Center, Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, G1R 3S3, Canada
| | - Francois Bordeleau
- CHU de Québec-Université Laval Research Center (Oncology Division), Université Laval Cancer Research Center, Centre de Recherche en Organogénèse Expérimentale de l'Université Laval/LOEX, Québec, G1R 3S3, Canada; Département de Biologie Moléculaire, de Biochimie Médicale et de Pathologie, Université Laval, Québec, Canada, G1V 0A6.
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2
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Usoltsev O, Tereshchenko A, Skorynina A, Kozyr E, Soldatov A, Safonova O, Clark AH, Ferri D, Nachtegaal M, Bugaev A. Machine Learning for Quantitative Structural Information from Infrared Spectra: The Case of Palladium Hydride. SMALL METHODS 2024; 8:e2301397. [PMID: 38295064 DOI: 10.1002/smtd.202301397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 01/09/2024] [Indexed: 02/02/2024]
Abstract
Infrared spectroscopy (IR) is a widely used technique enabling to identify specific functional groups in the molecule of interest based on their characteristic vibrational modes or the presence of a specific adsorption site based on the characteristic vibrational mode of an adsorbed probe molecule. The interpretation of an IR spectrum is generally carried out within a fingerprint paradigm by comparing the observed spectral features with the features of known references or theoretical calculations. This work demonstrates a method for extracting quantitative structural information beyond this approach by application of machine learning (ML) algorithms. Taking palladium hydride formation as an example, Pd-H pressure-composition isotherms are reconstructed using IR data collected in situ in diffuse reflectance using CO molecule as a probe. To the best of the knowledge, this is the first example of the determination of continuous structural descriptors (such as interatomic distance and stoichiometric coefficient) from the fine structure of vibrational spectra, which opens new possibilities of using IR spectra for structural analysis.
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Affiliation(s)
- Oleg Usoltsev
- ALBA Synchrotron, Cerdanyola del Valles, Barcelona, 08290, Spain
| | | | - Alina Skorynina
- ALBA Synchrotron, Cerdanyola del Valles, Barcelona, 08290, Spain
| | | | - Alexander Soldatov
- Southern Federal University, Sladkova 178/24, Rostov-on-Don, 344090, Russia
| | - Olga Safonova
- Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland
| | - Adam H Clark
- Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland
| | - Davide Ferri
- Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland
| | - Maarten Nachtegaal
- Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland
| | - Aram Bugaev
- Paul Scherrer Institute, Forschungsstrasse 111, Villigen, 5232, Switzerland
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3
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Neupane R, Boddu SHS, Al-Tabakha MM, Jacob S, Babu RJ, Tiwari AK. Percutaneous absorption and Skin accumulation of Lorazepam-Diphenhydramine- Haloperidol Carbopol gel in Porcine Ear Skin. AAPS PharmSciTech 2023; 24:183. [PMID: 37700110 DOI: 10.1208/s12249-023-02608-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 06/25/2023] [Indexed: 09/14/2023] Open
Abstract
This study presents the formulation and evaluation of an ABH Carbopol gel containing lorazepam (Ativan®), diphenhydramine hydrochloride (Benadryl®), and haloperidol (Haldol®) for treating chemotherapy-induced nausea and vomiting (CINV) in hospice patients. ABH PLO gel is widely used for this purpose due to its low cost and presumed efficacy. However, previous studies, including one conducted by the authors, have reported insufficient drug absorption from the ABH PLO gel. Here we hypothesized that the ABH Carbopol gel would provide superior percutaneous absorption of the drugs. ABH Carbopol gel was characterized for pH, viscosity, thermal properties, and infrared spectroscopy. The percutaneous absorption and skin retention of the gel was evaluated across porcine ear skin using Franz diffusion cells, and the drug concentrations were determined by high-performance liquid chromatography. The pH of the ABH Carbopol gel was found to be 6.80 ± 0.33, and the retention time of diphenhydramine, haloperidol, and lorazepam were 4.73, 7.11, and 18.69 minutes, respectively. The thermogram of the ABH Carbopol gel indicates the drugs were present in the dissolved state. Based on the flux data, the estimated steady-state concentration (Css) of diphenhydramine, haloperidol, and lorazepam were found to be 44.64 ng/ml, 2.58 ng/ml, and 20.1 ng/ml, respectively. These values were significantly higher than those obtained from the ABH PLO gel. In conclusion, the ABH Carbopol gel provides a promising alternative to the ABH PLO gel for treating CINV in hospice patients. Further studies are required to validate these findings in clinical settings.
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Affiliation(s)
- Rabin Neupane
- Department of Pharmacy Practice, College of Pharmacy, The University of Toledo, 3000, Arlington Ave., Toledo, OH, 43614, USA
| | - Sai H S Boddu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman, P.O. Box 346, United Arab Emirates.
- Center of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, P.O., Box 346, United Arab Emirates.
| | - Moawia M Al-Tabakha
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, Ajman University, Ajman, P.O. Box 346, United Arab Emirates
- Center of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman, P.O., Box 346, United Arab Emirates
| | - Shery Jacob
- Department of Pharmaceutical Sciences, College of Pharmacy, Gulf Medical University, Ajman, 4184, United Arab Emirates
| | - R Jayachandra Babu
- Department of Drug Discovery and Development, Harrison School of Pharmacy, Auburn University, Auburn, AL, 36849, USA
| | - Amit K Tiwari
- Department of Pharmacology & Experimental Therapeutics, The University of Toledo, Health Science Campus, 3000 Arlington Ave., Toledo, OH, 43614, USA
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Omrani R, Jebli N, Arfaoui Y, Chevalier Y, Akacha AB. Synthesis, X-ray structure, DFT investigation, and molecular docking of 1,3,5-tricyclohexyl-1,3,5-triazinane-2,4,6-trione, a cyclic polyamide with anti HIV-1 (RT), antiplatelet, and anticoagulant activities. Struct Chem 2023. [DOI: 10.1007/s11224-023-02161-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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Maier M, Abbas D, Komma M, Mu'min MS, Thiele S, Böhm T. A comprehensive study on the ionomer properties of PFSA membranes with confocal Raman microscopy. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2022.121244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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6
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Kalendar R, Ghamkhar K, Franceschi P, Egea-Cortines M. Editorial: Spectroscopy for crop and product phenotyping. FRONTIERS IN PLANT SCIENCE 2022; 13:1058333. [PMID: 36420036 PMCID: PMC9677824 DOI: 10.3389/fpls.2022.1058333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Affiliation(s)
- Ruslan Kalendar
- Helsinki Institute of Life Science HiLIFE, University of Helsinki, Biocenter 3, Helsinki, Finland
- National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan
| | - Kioumars Ghamkhar
- Margot Forde Germplasm Centre, Grasslands Research Centre, AgResearch, Palmerston North, New Zealand
| | - Pietro Franceschi
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Marcos Egea-Cortines
- Instituto de Biotecnología Vegegal, Universidad Politécnica de Cartagena, Cartagena, Spain
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Jebli N, Arfaoui Y, Van Hecke K, Cavalier JF, Touil S. Experimental and computational investigation of Z/E isomerism, X-ray crystal structure and molecular docking study of (2-(hydroxyimino)cyclohexyl)diphenylphosphine sulfide, a potential antibacterial agent. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129634] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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8
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X-ray crystal structure, Hirshfeld surface analysis, thermal stability and photophysical properties of some symmetrical trans -α,α′-bis(diphenylphosphoryl)- and α,α′-bis(diphenylphosphorothioyl)cycloalkanones. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.05.071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Finzi-Quintão CM, Novack KM, Bernardes-Silva AC, Silva TD, Moreira LES, Braga LEM. Influence of Moringa oleifera derivates in blends of PBAT/PLA with LDPE. POLIMEROS 2018. [DOI: 10.1590/0104-1428.05717] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Kátia Monteiro Novack
- Universidade Federal de Ouro Preto, Brasil; Universidade Federal de Ouro Preto, Brasil
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10
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Croom A, Tarallo R, Weck M. End-group functionalization and postpolymerization modification of helical poly(isocyanide)s. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28159] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Anna Croom
- Department of Chemistry and the Molecular Design Institute; New York University; 100 Washington Square East New York New York 10003-6688
| | - Rossella Tarallo
- Department of Chemistry and the Molecular Design Institute; New York University; 100 Washington Square East New York New York 10003-6688
| | - Marcus Weck
- Department of Chemistry and the Molecular Design Institute; New York University; 100 Washington Square East New York New York 10003-6688
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Metabolic Fingerprinting of Pseudomonas putida DOT-T1E Strains: Understanding the Influence of Divalent Cations in Adaptation Mechanisms Following Exposure to Toluene. Metabolites 2016; 6:metabo6020014. [PMID: 27128955 PMCID: PMC4931545 DOI: 10.3390/metabo6020014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 04/20/2016] [Accepted: 04/21/2016] [Indexed: 11/16/2022] Open
Abstract
Pseudomonas putida strains can adapt and overcome the activity of toxic organic solvents by the employment of several resistant mechanisms including efflux pumps and modification to lipopolysaccharides (LPS) in their membranes. Divalent cations such as magnesium and calcium play a crucial role in the development of solvent tolerance in bacterial cells. Here, we have used Fourier transform infrared (FT-IR) spectroscopy directly on cells (metabolic fingerprinting) to monitor bacterial response to the absence and presence of toluene, along with the influence of divalent cations present in the growth media. Multivariate analysis of the data using principal component-discriminant function analysis (PC-DFA) showed trends in scores plots, illustrating phenotypic alterations related to the effect of Mg(2+), Ca(2+) and toluene on cultures. Inspection of PC-DFA loadings plots revealed that several IR spectral regions including lipids, proteins and polysaccharides contribute to the separation in PC-DFA space, thereby indicating large phenotypic response to toluene and these cations. Finally, the saturated fatty acid ratio from the FT-IR spectra showed that upon toluene exposure, the saturated fatty acid ratio was reduced, while it increased in the presence of divalent cations. This study clearly demonstrates that the combination of metabolic fingerprinting with appropriate chemometric analysis can result in practicable knowledge on the responses of important environmental bacteria to external stress from pollutants such as highly toxic organic solvents, and indicates that these changes are manifest in the bacterial cell membrane. Finally, we demonstrate that divalent cations improve solvent tolerance in P. putida DOT‑T1E strains.
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12
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Nyarko E, Donnelly C. Differentiation of different mixed Listeria strains and also acid-injured, heat-injured, and repaired cells of Listeria monocytogenes using fourier transform infrared spectroscopy. J Food Prot 2015; 78:540-8. [PMID: 25719878 DOI: 10.4315/0362-028x.jfp-14-160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Fourier transform infrared (FT-IR) spectroscopy was used to differentiate mixed strains of Listeria monocytogenes and mixed strains of L. monocytogenes and Listeria innocua. FT-IR spectroscopy was also applied to investigate the hypothesis that heat-injured and acid-injured cells would return to their original physiological integrity following repair. Thin smears of cells on infrared slides were prepared from cultures for mixed strains of L. monocytogenes, mixed strains of L. monocytogenes and L. innocua, and each individual strain. Heat-injured and acid-injured cells were prepared by exposing harvested cells of L. monocytogenes strain R2-764 to a temperature of 56 ± 0.2°C for 10 min or lactic acid at pH 3 for 60 min, respectively. Cellular repair involved incubating aliquots of acid-injured and heat-injured cells separately in Trypticase soy broth supplemented with 0.6% yeast extract for 22 to 24 h; bacterial thin smears on infrared slides were prepared for each treatment. Spectral collection was done using 250 scans at a resolution of 4 cm(-1) in the mid-infrared wavelength region. Application of multivariate discriminant analysis to the wavelength region from 1,800 to 900 cm(-1) separated the individual L. monocytogenes strains. Mixed strains of L. monocytogenes and L. monocytogenes cocultured with L. innocua were successfully differentiated from the individual strains when the discriminant analysis was applied. Different mixed strains of L. monocytogenes were also successfully separated when the discriminant analysis was applied. A data set for injury and repair analysis resulted in the separation of acid-injured, heat-injured, and intact cells; repaired cells clustered closer to intact cells when the discriminant analysis (1,800 to 600 cm(-1)) was applied. FT-IR spectroscopy can be used for the rapid source tracking of L. monocytogenes strains because it can differentiate between different mixed strains and individual strains of the pathogen.
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Affiliation(s)
- Esmond Nyarko
- Department of Nutrition and Food Sciences, University of Vermont, 109 Carrigan Drive, Bington, Vermont 05405, USA
| | - Catherine Donnelly
- Department of Nutrition and Food Sciences, University of Vermont, 109 Carrigan Drive, Bington, Vermont 05405, USA.
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13
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Use of Fourier transform-infrared spectroscopy to predict spoilage bacteria on aerobically stored chicken breast fillets. Lebensm Wiss Technol 2014. [DOI: 10.1016/j.lwt.2013.12.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Morgan TJ, Kandiyoti R. Pyrolysis of coals and biomass: analysis of thermal breakdown and its products. Chem Rev 2013; 114:1547-607. [PMID: 24160484 DOI: 10.1021/cr400194p] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Trevor J Morgan
- Hawaii Natural Energy Institute, University of Hawaii at Manoa , 1680 East West Road, Post 109, Honolulu, Hawaii 96822, United States
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15
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Kanaujia PK, Sharma Y, Agrawal U, Garg M. Analytical approaches to characterizing pyrolysis oil from biomass. Trends Analyt Chem 2013. [DOI: 10.1016/j.trac.2012.09.009] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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16
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Chatterjee D, Mansfield DS, Anderson NG, Subedi S, Woolley AT. "Flow valve" microfluidic devices for simple, detectorless, and label-free analyte quantitation. Anal Chem 2012; 84:7057-63. [PMID: 22881075 DOI: 10.1021/ac301278s] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Simplified analysis systems that offer the performance of benchtop instruments but the convenience of portability are highly desirable. We have developed novel, miniature devices that feature visual inspection readout of a target's concentration from a ~1 μL volume of solution introduced into a microfluidic channel. Microchannels are constructed within an elastomeric material, and channel surfaces are coated with receptors to the target. When a solution is flowed into the channel, the target cross-links multiple receptors on the surface, resulting in constriction of the first few millimeters of the channel and stopping of flow. Quantitation is performed by measuring the distance traveled by the target solution in the channel before flow stops. A key advantage of our approach is that quantitation is accomplished by simple visual inspection of the channel, without the need for complex detection instrumentation. We have tested these devices using the model system of biotin as a receptor and streptavidin as the target. We have also characterized three factors that influence flow distance: solution viscosity, device thickness, and channel height. We found that solution capillary flow distance scales with the negative logarithm of target concentration and have detected streptavidin concentrations as low as 1 ng/mL. Finally, we have identified and evaluated a plausible mechanism wherein time-dependent channel constriction in the first few millimeters leads to concentration-dependent flow distances. Their simplicity coupled with performance makes these "flow valve" systems especially attractive for a host of analysis applications.
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Affiliation(s)
- Debolina Chatterjee
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, USA
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Cheng SC, Huang MZ, Wu LC, Chou CC, Cheng CN, Jhang SS, Shiea J. Building blocks for the development of an interface for high-throughput thin layer chromatography/ambient mass spectrometric analysis: a green methodology. Anal Chem 2012; 84:5864-8. [PMID: 22816777 DOI: 10.1021/ac301178w] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Interfacing thin layer chromatography (TLC) with ambient mass spectrometry (AMS) has been an important area of analytical chemistry because of its capability to rapidly separate and characterize the chemical compounds. In this study, we have developed a high-throughput TLC-AMS system using building blocks to deal, deliver, and collect the TLC plate through an electrospray-assisted laser desorption ionization (ELDI) source. This is the first demonstration of the use of building blocks to construct and test the TLC-MS interfacing system. With the advantages of being readily available, cheap, reusable, and extremely easy to modify without consuming any material or reagent, the use of building blocks to develop the TLC-AMS interface is undoubtedly a green methodology. The TLC plate delivery system consists of a storage box, plate dealing component, conveyer, light sensor, and plate collecting box. During a TLC-AMS analysis, the TLC plate was sent to the conveyer from a stack of TLC plates placed in the storage box. As the TLC plate passed through the ELDI source, the chemical compounds separated on the plate would be desorbed by laser desorption and subsequently postionized by electrospray ionization. The samples, including a mixture of synthetic dyes and extracts of pharmaceutical drugs, were analyzed to demonstrate the capability of this TLC-ELDI/MS system for high-throughput analysis.
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Affiliation(s)
- Sy-Chyi Cheng
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan
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Yang P, Song P, Sun SQ, Zhou Q, Feng S, Tao JX. Differentiation and quality estimation of Cordyceps with infrared spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 74:983-990. [PMID: 19766530 DOI: 10.1016/j.saa.2009.09.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Revised: 08/17/2009] [Accepted: 09/01/2009] [Indexed: 05/28/2023]
Abstract
Heretofore, a scientific and systemic method for differentiation and quality estimation of a well-known Chinese traditional medicine, 'Cordyceps', has not been established in modern market. In this paper, Fourier-transform infrared spectroscopy (FTIR) and two-dimensional correlation infrared spectroscopy (2D-IR) are employed to propose a method for analysis of Cordyceps. It has presented that IR spectra of real Cordyceps of different origins and counterfeits have their own macroscopic fingerprints, with discriminated shapes, positions and intensities. Their secondary derivative spectra can amplify the differences and confirm the potentially characteristic IR absorption bands 1400-1700cm(-1) to be investigated in 2D-IR. Many characteristic fingerprints are discovered in 2D-IR spectra in the range of 1400-1700cm(-1) and hetero 2D spectra of 670-780cm(-1)x1400-1700cm(-1). The different fingerprints display different chemical constitutes. Through the three steps, different Cordyceps and their counterfeits can be discriminated effectively and their qualities distinctly display. Successful analysis of eight Cordyceps capsule products has proved the practicability of the method, which can also be applied to the quality estimation of other Chinese traditional medicines.
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Affiliation(s)
- Ping Yang
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
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Leitermann F, Syldatk C, Hausmann R. Fast quantitative determination of microbial rhamnolipids from cultivation broths by ATR-FTIR Spectroscopy. J Biol Eng 2008; 2:13. [PMID: 18840269 PMCID: PMC2572035 DOI: 10.1186/1754-1611-2-13] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2008] [Accepted: 10/07/2008] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Vibrational spectroscopic techniques are becoming increasingly important and popular because they have the potential to provide rapid and convenient solutions to routine analytical problems. Using these techniques, a variety of substances can be characterized, identified and also quantified rapidly. RESULTS The rapid ATR-FTIR (Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy) in time technique has been applied, which is suitable to quantify the concentrations of microbial rhamnolipids in a typical cultivation process. While the usually applied HPLC analysis requires an extensive and time consuming multi step extraction protocol for sample preparation, the ATR-FTIR-method allows the quantification of the rhamnolipids within 20 minutes. Accuracies between 0.5 g/l - 2.1 g/l for the different analytes were determined by cross validation of the calibration set. Even better accuracies between 0.28 g/l - 0.59 g/l were found for independent test samples of an arbitrarily selected cultivation. CONCLUSION ATR-FTIR was found to be suitable for the rapid analysis of rhamnolipids in a biotechnological process with good reproducibility in sample determination and sufficient accuracy. An improvement in accuracy through continuous expansion and validation of the reference spectra set seems very likely.
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Affiliation(s)
- Frank Leitermann
- Research University Karlsruhe, Institute of Engineering in Life Sciences, Section of Technical Biology, Engler-Bunte-Ring 1, 76131 Karlsruhe, Germany
| | - Christoph Syldatk
- Research University Karlsruhe, Institute of Engineering in Life Sciences, Section of Technical Biology, Engler-Bunte-Ring 1, 76131 Karlsruhe, Germany
| | - Rudolf Hausmann
- Research University Karlsruhe, Institute of Engineering in Life Sciences, Section of Technical Biology, Engler-Bunte-Ring 1, 76131 Karlsruhe, Germany
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Heier ST, Johnson KE, Mudalige A, Tiani DJ, Reid VR, Pemberton JE. Infrared Reflectance−Absorbance Spectroscopy of Thin Films Formed by Forced Dewetting of Solid−Fluid Interfaces. Anal Chem 2008; 80:8012-9. [DOI: 10.1021/ac801019r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shinobu Tsuruta Heier
- Department of Chemistry, University of Arizona, 1306 East University Boulevard, Tucson, Arizona 85721
| | - Kevin E. Johnson
- Department of Chemistry, University of Arizona, 1306 East University Boulevard, Tucson, Arizona 85721
| | - Anoma Mudalige
- Department of Chemistry, University of Arizona, 1306 East University Boulevard, Tucson, Arizona 85721
| | - Domenic J. Tiani
- Department of Chemistry, University of Arizona, 1306 East University Boulevard, Tucson, Arizona 85721
| | - Vanessa R. Reid
- Department of Chemistry, University of Arizona, 1306 East University Boulevard, Tucson, Arizona 85721
| | - Jeanne E. Pemberton
- Department of Chemistry, University of Arizona, 1306 East University Boulevard, Tucson, Arizona 85721
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21
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Wu YW, Sun SQ, Zhao J, Li Y, Zhou Q. Rapid discrimination of extracts of Chinese propolis and poplar buds by FT-IR and 2D IR correlation spectroscopy. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.12.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Hong SY, Jung YM, Kim SB, Park SM. Electrochemistry of conductive polymers. 34. Two-dimensional correlation analysis of real-time spectroelectrochemical data for aniline polymerization. J Phys Chem B 2007; 109:3844-50. [PMID: 16851434 DOI: 10.1021/jp046218f] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Electrochemical polymerization of aniline has been studied using real-time spectroelectrochemical experiments conducted concurrently with potentiodynamic scans in a nitric acid electrolyte with its pH adjusted to 0.50. Two-dimensional correlation spectral analysis and subsequent extraction of pure component spectra as well as their relative concentration profiles from complex spectroelectrochemical data employing the alternating least-squares regression iteration-based self-modeling curve resolution method led to positive identification of intermediate species. A conclusion was reached on the polymerization reaction mechanism based on these intermediate species and how their concentrations increased or decreased during the potential scans. The mechanism thus concluded represents a summary of a current understanding of the aniline polymerization reaction.
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Affiliation(s)
- Sun-Young Hong
- School of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
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23
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Kamnev AA, Tugarova AV, Antonyuk LP, Tarantilis PA, Kulikov LA, Perfiliev YD, Polissiou MG, Gardiner PHE. Instrumental analysis of bacterial cells using vibrational and emission Mössbauer spectroscopic techniques. Anal Chim Acta 2006; 573-574:445-52. [PMID: 17723559 DOI: 10.1016/j.aca.2006.04.041] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2005] [Revised: 03/19/2006] [Accepted: 04/20/2006] [Indexed: 11/20/2022]
Abstract
In biosciences and biotechnology, the expanding application of physicochemical approaches using modern instrumental techniques is an efficient strategy to obtain valuable and often unique information at the molecular level. In this work, we applied a combination of vibrational (Fourier transform infrared (FTIR), FT-Raman) spectroscopic techniques, useful in overall structural and compositional analysis of bacterial cells of the rhizobacterium Azospirillum brasilense, with 57Co emission Mössbauer spectroscopy (EMS) used for sensitive monitoring of metal binding and further transformations in live bacterial cells. The information obtained, together with ICP-MS analyses for metals taken up by the bacteria, is useful in analysing the impact of the environmental conditions (heavy metal stress) on the bacterial metabolism and some differences in the heavy metal stress-induced behaviour of non-endophytic (Sp7) and facultatively endophytic (Sp245) strains. The results show that, while both strains Sp7 and Sp245 take up noticeable and comparable amounts of heavy metals from the medium (0.12 and 0.13 mg Co, 0.48 and 0.44 mg Cu or 4.2 and 2.1 mg Zn per gram of dry biomass, respectively, at a metal concentration of 0.2 mM in the medium), their metabolic responses differ essentially. Whereas for strain Sp7 the FTIR measurements showed significant accumulation of polyhydroxyalkanoates as storage materials involved in stress endurance, strain Sp245 did not show any major changes in cellular composition. Nevertheless, EMS measurements showed rapid binding of cobalt(II) by live bacterial cells (chemically similar to metal binding by dead bacteria) and its further transformation in the live cells within an hour.
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Affiliation(s)
- Alexander A Kamnev
- Laboratory of Biochemistry of Plant-Bacterial Symbioses, Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, 410049 Saratov, Russia.
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24
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Li B, Zhang J, Hu Y, Liang Y, Ozaki Y. Exploring time-dependent structural changes during the cold crystallization process of isotactic polystyrene by infrared spectroscopy and multivariate curve resolution. APPLIED SPECTROSCOPY 2006; 60:155-61. [PMID: 16542566 DOI: 10.1366/000370206776023359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The present study attempts an application of Fourier transform infrared (FT-IR) spectroscopy in conjunction with multivariate curve resolution (MCR) techniques to explore the structural evolution of isotactic polystyrene (iPS) during the cold crystallization process. The focus of the present study is placed on the performance of MCR techniques, e.g., orthogonal projection (OP), alternating least squares (ALS), and fixed-size moving window evolving factor analysis (FSMWEFA), and the interpretability of spectral changes in the investigated chemical process. As a result, valuable information and conclusions about the structural evolution of iPS during the crystallization process can be extracted: when the amorphous phase of iPS changes, the ordering of the phenyl rings takes place first, and then the polymer chains adjust their local conformations to form short 3(1) helix structures. Furthermore, according to intensity profiles of the spectral variations, the ordering of the phenyl rings proceeds more intensely than the formation of ordered local chains, and the structural evolution of iPS occurs even during the induction period. The spectral variations resulting from the conformational changes in the 3(1) helical structures depend on the sequence length of the helical chains: the longer the polymer chain is, the smaller the corresponding band variations are. It has been demonstrated that the combination of FTIR spectroscopy and chemometric MCR techniques is very promising for the analysis of the crystallization process of polymers. MCR is a powerful tool for analyzing and visualizing spectral data and integrating them with other information, making spectral intensity variations more amenable to interpretation in order to explore the molecular dynamics of polymers.
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Affiliation(s)
- Boyan Li
- Department of Chemistry and Research Center for Environment Friendly Polymers, School of Science and Technology, Kwansei-Gakuin University, Sanda, Japan
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25
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Abstract
The post-genomics era has brought with it ever increasing demands to observe and characterise variation within biological systems. This variation has been studied at the genomic (gene function), proteomic (protein regulation) and the metabolomic (small molecular weight metabolite) levels. Whilst genomics and proteomics are generally studied using microarrays (genomics) and 2D-gels or mass spectrometry (proteomics), the technique of choice is less obvious in the area of metabolomics. Much work has been published employing mass spectrometry, NMR spectroscopy and vibrational spectroscopic techniques, amongst others, for the study of variations within the metabolome in many animal, plant and microbial systems. This review discusses the advantages and disadvantages of each technique, putting the current status of the field of metabolomics in context, and providing examples of applications for each technique employed.
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Affiliation(s)
- Warwick B Dunn
- Bioanalytical Sciences Group, School of Chemistry, University of Manchester, Faraday Building, Sackville Street, P. O. Box 88, Manchester, UKM60 1QD.
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26
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Wang JW, Hon MH. Preparation of poly(ethylene glycol)/chitosan membranes by a glucose-mediating process andin vitro drug release. J Appl Polym Sci 2005. [DOI: 10.1002/app.21506] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Islam MT, Rodríguez-Hornedo N, Ciotti S, Ackermann C. Fourier transform infrared spectroscopy for the analysis of neutralizer-Carbomer and surfactant-Carbomer interactions in aqueous, hydroalcoholic, and anhydrous gel formulations. AAPS JOURNAL 2004; 6:e35. [PMID: 15760100 PMCID: PMC2751231 DOI: 10.1208/aapsj060435] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The objective of the present study is to evaluate the polymer-surfactant and polymer-neutralizer interactions in topical aqueous, anhydrous, and hydroalcoholic gel formulations using Fourier transform infrared (FTIR) spectroscopy. The gels were prepared by dispersing Carbomer (Carbopol 980) in water and ethanol for aqueous and anhydrous systems, respectively. Glycerol and propylene glycol were also added to ensure that the compositions of gels closely resembled those used in typical topical gel formulations. Comparisons of the spectra of Carbopol dispersions in aqueous, anhydrous, and hydroalcoholic systems, performed for the first time, show Carbopol-neutralizer and Carbopol-surfactant interactions vary depending on the nature of the solvents used for gel formation. Analysis of the spectra of aqueous gel formulations indicates significant presence of ionized carboxyl groups only at higher pH (approximately 8.0). Drying of the aqueous gels causes a shift in the carbonyl stretch band toward higher energy, suggesting changes in polymer-neutralizer interaction. Anhydrous gels exhibit 2 different carbonyl stretch bands: the one at approximately 1653 cm(-1) is related to the carboxyl group that is hydrogen bonded and is akin to hydrous gels; the second one at approximately 1717 cm(-1) is indicative of free carbonyl groups. The carbonyl bands of dried gels appear at different energy levels than the solvated gels. This shift resulting from solvent evaporation, reported for the first time, indicates changes in hydrogen bond characteristics. The results show that FTIR can be a good technique compared with other more time-consuming means of analysis for topical formulations.
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Affiliation(s)
- Mohammad T. Islam
- />Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, 48109 Ann Arbor, MI
| | - Naír Rodríguez-Hornedo
- />Department of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, 48109 Ann Arbor, MI
| | - Susan Ciotti
- />Pfizer, Inc, 2800 Plymouth Rd, 48105 Ann Arbor, MI
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28
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Rapid and quantitative detection of the microbial spoilage of beef by Fourier transform infrared spectroscopy and machine learning. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.03.060] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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29
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Wilking JN, Manning CJ, Arbuckle-Keil GA. Characterization of an optoelectronic polymer, poly(2-phenoxy p-phenylene vinylene), and its precursor polymer by dynamic infrared spectroscopy. APPLIED SPECTROSCOPY 2004; 58:304-312. [PMID: 15035711 DOI: 10.1366/000370204322886654] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Numerous applications of dynamic infrared spectroscopy to study a variety of polymer systems have been described in the literature. Typically, dynamic spectral changes are used to determine the molecular and submolecular reorientations that give rise to a material's observable mechanical properties. In the present study, the normal modes are characterized by their time-dependent response to an applied perturbation as an aid to assignment of the observed vibrational bands. Characterization of a newly synthesized optoelectronic polymer, poly(2-phenoxy p-phenylene vinylene), and its precursor polymer, is described. Vibrational modes along the backbone and side chain are expected to exhibit significantly different responses to mechanical perturbation due to delayed phase response of the phenoxy substituent. In-phase spectra, quadrature spectra, and two-dimensional infrared correlation maps are included in this characterization. This study has demonstrated that dynamic infrared spectroscopy can be used to distinguish backbone phenylene ring stretches from ring stretches associated with the phenoxy substituent. Density functional theory calculations are applied to confirm infrared spectral assignments. The mechanical properties are briefly discussed in light of the dynamic response.
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Affiliation(s)
- James N Wilking
- Department of Chemistry, Rutgers University, 315 Penn Street, Camden, New Jersey 08102, USA
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30
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Liao C, Chen Z, Yin Z, Li SZ. Preliminary approach to estimation and prediction of infrared spectroscopy for Mannich bases by atomic electronegativity distance vector (VAED). Comput Biol Chem 2003; 27:229-39. [PMID: 12927099 DOI: 10.1016/s0097-8485(02)00056-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Systematical studies were made on infrared spectroscopy (IR) and its regularity of vibration frequency. By applying a novel molecular structural descriptor vector containing four elements, called atomic electronegativity (EN) distance vector (VAED) expressed in the form of force, to characterize the chemical environment of various atoms in Mannich bases, the quantitative relationship models of IR of Mannich bases were established with respect to their VAED descriptors, based on multiple linear regression (MLR) analysis. In order to demonstrate the modeling stabilities and predictive abilities of diverse models, a cross validation (CV) with the leave-one-out (LOO) procedure was performed for each modeling equation. For the first panel of the 17 examined analogous Mannich bases, the correlation coefficient (R) between the observed and estimated vibration frequencies and standard deviation (S.D.) both for the double covalent bonds, C, O ami Pz.sbnd;O are 0.9782, 0.9817, 9.1170 and 11.0649; and the corresponding R and S.D. obtained by the CV method are 0.9496, 0.8829, 14.1186 and 27.2829, respectively, which shows that the quantitative structure-spectrum relationship (QSSR) models are quite stable and have both good estimative results and fine predictive capabilities. For the second panel of the 16 examined Mannich bases, the results still seem satisfied since the QSSR model is stable and could roughly estimate and predict the vibration frequency of the Cz.dbnd6;O bond for the other related Mannich bases.
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Affiliation(s)
- Chunyang Liao
- College of Chemistry and Chemical Engineering, Chongqing University, 400044, Chongqing, People's Republic of China
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31
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Ellis DI, Broadhurst D, Kell DB, Rowland JJ, Goodacre R. Rapid and quantitative detection of the microbial spoilage of meat by fourier transform infrared spectroscopy and machine learning. Appl Environ Microbiol 2002; 68:2822-8. [PMID: 12039738 PMCID: PMC123922 DOI: 10.1128/aem.68.6.2822-2828.2002] [Citation(s) in RCA: 157] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2001] [Accepted: 03/14/2002] [Indexed: 11/20/2022] Open
Abstract
Fourier transform infrared (FT-IR) spectroscopy is a rapid, noninvasive technique with considerable potential for application in the food and related industries. We show here that this technique can be used directly on the surface of food to produce biochemically interpretable "fingerprints." Spoilage in meat is the result of decomposition and the formation of metabolites caused by the growth and enzymatic activity of microorganisms. FT-IR was exploited to measure biochemical changes within the meat substrate, enhancing and accelerating the detection of microbial spoilage. Chicken breasts were purchased from a national retailer, comminuted for 10 s, and left to spoil at room temperature for 24 h. Every hour, FT-IR measurements were taken directly from the meat surface using attenuated total reflectance, and the total viable counts were obtained by classical plating methods. Quantitative interpretation of FT-IR spectra was possible using partial least-squares regression and allowed accurate estimates of bacterial loads to be calculated directly from the meat surface in 60 s. Genetic programming was used to derive rules showing that at levels of 10(7) bacteria.g(-1) the main biochemical indicator of spoilage was the onset of proteolysis. Thus, using FT-IR we were able to acquire a metabolic snapshot and quantify, noninvasively, the microbial loads of food samples accurately and rapidly in 60 s, directly from the sample surface. We believe this approach will aid in the Hazard Analysis Critical Control Point process for the assessment of the microbiological safety of food at the production, processing, manufacturing, packaging, and storage levels.
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Affiliation(s)
- David I Ellis
- Institute of Biological Sciences. Department of Computer Sciences, University of Wales, Aberystwyth, Ceredigion SY23 3DD, Wales, United Kingdom
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32
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Ellis DI, Goodacre R. Rapid and quantitative detection of the microbial spoilage of muscle foods: current status and future trends. Trends Food Sci Technol 2001. [DOI: 10.1016/s0924-2244(02)00019-5] [Citation(s) in RCA: 117] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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