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Harańczyk H, Strzałka K, Kubat K, Andrzejowska A, Olech M, Jakubiec D, Kijak P, Palfner G, Casanova-Katny A. A comparative analysis of gaseous phase hydration properties of two lichenized fungi: Niebla tigrina (Follman) Rundel & Bowler from Atacama Desert and Umbilicaria antarctica Frey & I. M. Lamb from Robert Island, Southern Shetlands Archipelago, maritime Antarctica. Extremophiles 2021; 25:267-283. [PMID: 33942193 PMCID: PMC8102299 DOI: 10.1007/s00792-021-01227-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 03/22/2021] [Indexed: 11/24/2022]
Abstract
Gaseous phase hydration properties for thalli of Niebla tigrina from Atacama Desert, and for Umbilicaria antarctica from Isla Robert, maritime Antarctica, were analyzed using 1H-NMR relaxometry, spectroscopy, and sorption isotherm analysis. The molecular dynamics of residual water was monitored to distinguish the sequential binding very tightly, tightly, and loosely bound water fractions. These two species differ in hydration kinetics faster for Desert N. tigrina [A1 = 0.51(4); t1 = 0.51(5) h, t2 = 15.0(1.9) h; total 0.7 for p/p0 = 100%], compared to Antarctic U. antarctica [A1 = 0.082(6), t1 = 2.4(2) h, t2 = [26.9(2.7)] h, total 0.6 for p/p0 = 100%] from humid polar area. The 1H-NMR measurements distinguish signal from tightly bound water, and two signals from loosely bound water, with different chemical shifts higher for U. antarctica than for N. tigrina. Both lichen species contain different amounts of water-soluble solid fraction. For U. antarctica, the saturation concentration of water soluble solid fraction, cs = 0.55(9), and the dissolution effect is detected at least up to Δm/m0 = 0.7, whereas for N. tigrina with the similar saturation concentration, cs = 053(4), this fraction is detected up to the threshold hydration level equal to ΔM/m0 = 0.3 only.
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Affiliation(s)
- Hubert Harańczyk
- M. Smoluchowski Institute of Physics, Jagiellonian University, ul. Łojasiewicza 11, 30-348, Cracow, Poland.
| | - K Strzałka
- Malopolska Centre of Biotechnology, Jagiellonian University, Cracow, Poland.,Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Cracow, Poland
| | - K Kubat
- M. Smoluchowski Institute of Physics, Jagiellonian University, ul. Łojasiewicza 11, 30-348, Cracow, Poland
| | - A Andrzejowska
- M. Smoluchowski Institute of Physics, Jagiellonian University, ul. Łojasiewicza 11, 30-348, Cracow, Poland
| | - M Olech
- Institute of Botany, Jagiellonian University, Cracow, Poland.,Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - D Jakubiec
- M. Smoluchowski Institute of Physics, Jagiellonian University, ul. Łojasiewicza 11, 30-348, Cracow, Poland
| | - P Kijak
- M. Smoluchowski Institute of Physics, Jagiellonian University, ul. Łojasiewicza 11, 30-348, Cracow, Poland
| | - G Palfner
- Mycological and Mycorrhizal Laboratory, Concepción University, Concepción, Chile
| | - Angélica Casanova-Katny
- Plant Ecophysiology Laboratory, Faculty of Natural Resources, Catholic University of Temuco, Rudecindo Ortega, 03694, Temuco, Chile.
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Bacior M, Harańczyk H, Nowak P, Kijak P, Marzec M, Fitas J, Olech MA. Low-temperature immobilization of water in Antarctic Turgidosculum complicatulum and in Prasiola crispa. Part I. Turgidosculum complicatulum. Colloids Surf B Biointerfaces 2019; 173:869-875. [PMID: 30551303 DOI: 10.1016/j.colsurfb.2018.10.059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/26/2018] [Accepted: 10/23/2018] [Indexed: 11/28/2022]
Abstract
The studies of low-temperature immobilization of bound water in Antarctic lichenized fungus Turgidosculum complicatulum were performed using 1H NMR and DSC over a wide range of thallus hydration. 1H NMR free induction decays were decomposed into a solid component well described by the Gaussian function and two exponentially decaying components coming from a tightly bound water and from a loosely bound water fraction. 1H NMR spectra revealed one averaged mobile proton signal component. 1H NMR measurements recorded in time and in frequency domain suggest the non-cooperative bound water immobilization in T. complicatulum thallus. The threshold of the hydration level estimated by 1H NMR analysis at which the cooperative bound water freezing was detected was Δm/m0 ≈ 0.39, whereas for DSC analysis was equal to Δm/m0 = 0.375. Main ice melting estimated from DSC measurements for zero hydration level of the sample starts at tm = -(19.29 ± 1.19)°C. However, DSC melting peak shows a composed form being a superposition of the main narrow peak (presumably melting of mycobiont areas) and a broad low-temperature shoulder (presumably melting of isolated photobiont cells). DSC traces recorded after two-hour incubation of T. complicatulum thallus at -20 °C suggest much lower threshold level of hydration at which the ice formation occurs (Δm/m0 = 0.0842). Presumably it is a result of diffusion induced migration of separated water molecules to ice microcrystallites already present in thallus, but still beyond the calorimeter resolution.
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Affiliation(s)
- M Bacior
- Department of Physics, University of Agriculture in Kraków, Al. Mickiewicza 21, 31-120 Kraków, Poland.
| | - H Harańczyk
- Institute of Physics, Jagiellonian University, ul. Prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
| | - P Nowak
- Faculty of Computer Science, Electronics and Telecommunications, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland
| | - P Kijak
- Institute of Physics, Jagiellonian University, ul. Prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
| | - M Marzec
- Institute of Physics, Jagiellonian University, ul. Prof. Stanisława Łojasiewicza 11, 30-348 Kraków, Poland
| | - J Fitas
- Department of Mechanical Engineering and Agrophysics, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Krakow, Poland
| | - M A Olech
- Institute of Botany, Jagiellonian University, ul. Kopernika 27, 31-501 Kraków, Poland; Institute of Biochemistry and Biophysics, Polish Academy of Sciences, ul. Pawińskiego 5a, 02-106 Warsaw, Poland
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Denhartigh A, Reynolds L, Palmer K, Klein F, Rice J, Rejman JJ, Boison J, Kijak P, Shelver W. Validation of the BetaStar ® Advanced for Beta-lactams Test Kit for the Screening of Bulk Tank and Tanker Truck Milks for the Presence of Beta-lactam Drug Residues. J AOAC Int 2018; 101:1813-1827. [PMID: 29776460 DOI: 10.5740/jaoacint.18-0075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A validation study was conducted for an immunochromatographic method (BetaStar® Advanced for Beta-lactams) for the detection of beta-lactam residues in raw, commingled bovine milk. The assay detected amoxicillin, ampicillin, cloxacillin, penicillin, cephapirin, and ceftiofur below the U.S. Food and Drug Administration tolerance levels but above the maximum sensitivity thresholds established by the National Conference on Interstate Milk Shipments. The results of internal and independent laboratory dose-response studies employing spiked samples were in agreement. The test detected all six drugs at the approximate 90/95% sensitivity levels in milk from cows treated with each drug. Selectivity of the assay was 100%, as no false-positive results were obtained in testing 1148 control milk samples. Testing the estimated 90/95% sensitivity level for amoxicillin (8.5 ppb), ampicillin (6.9 ppb), cloxacillin (8.9 ppb), penicillin (4.2 ppb), and cephapirin (17.6 ppb), and at 100 ppb for each antibiotic, resulted in 94-100% positive tests for each of the beta-lactam drugs. The results of ruggedness experiments established the operating parameter tolerances for the assay. Cross-reactivity testing established that the assay detects other certain beta-lactam drugs, but it does not cross-react with any of 30 drugs belonging to seven different drug classes. Abnormally high bacterial or somatic cell counts in raw milk produced no assay interference.
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Affiliation(s)
| | | | | | - Frank Klein
- Neogen Corporation, 620 Lesher Pl., Lansing, MI 48912
| | - Jennifer Rice
- Neogen Corporation, 620 Lesher Pl., Lansing, MI 48912
| | - John J Rejman
- Neogen Corporation, 620 Lesher Pl., Lansing, MI 48912
| | - Joe Boison
- Retired scientist, 343 Penryn Crescent, Saskatoon, SK, Canada S7H 5G7
| | - Philip Kijak
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, Director Division of Residue Chemistry, 8401 Muirkirk Rd, Laurel, MD 20708
| | - Weilin Shelver
- Biosciences Research Laboratory, 1605 Albrecht Blvd, Fargo, ND 58105
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Ankrapp D, Schaus B, Clements L, Klein F, Rice J, Rejman J, Boison J, Kijak P, Shelver W. Validation of the BetaStar ® Advanced for Tetracyclines Test Kit for the Screening of Bulk Tank and Tanker Truck Milks for the Presence of Tetracycline Drug Residues. J AOAC Int 2018; 101:1794-1805. [PMID: 29743134 DOI: 10.5740/jaoacint.18-0082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A validation study was conducted for an immunochromatographic method (BetaStar® Advanced for Tetracyclines) for detection of tetracycline antibiotic residues in raw, commingled bovine milk. The assay was demonstrated to detect tetracycline, chlortetracycline, and oxytetracycline at levels below the FDA tolerance levels but above the maximum sensitivity thresholds established by the National Conference on Interstate Milk Shipments. Results of internal and independent laboratory dose-response studies employing spiked samples were in agreement. All three drugs at the approximate 90/95% sensitivity levels were detected in milk collected from cows that had been treated with the specific drug. Selectivity of the assay was 100%, as no false-positive results were obtained in testing 881 control milk samples. Testing the estimated 90/95 sensitivity level for tetracycline (213 ppb), chlortetracycline (272 ppb), and oxytetracycline (180 ppb) and at 1000 ppb for each antibiotic resulted in 100% positive tests for each tetracycline. Results of ruggedness experiments established the operating parameter tolerances for the test. Results of cross-reactivity testing established that the assay detects certain other tetracycline drugs but does not cross-react with any of 32 drugs belonging to seven different drug classes. Abnormally high bacterial or somatic cell counts (SCC) in raw milk produced no assay interference.
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Affiliation(s)
| | | | | | - Frank Klein
- Neogen Corp., 620 Lesher Pl, Lansing, MI 48912
| | | | - John Rejman
- Neogen Corp., 620 Lesher Pl, Lansing, MI 48912
| | - Joe Boison
- 343 Penryn Crescent, Saskatoon, SK, Canada S7H 5G7
| | - Philip Kijak
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research-Director, Division of Residue Chemistry, 8401 Muirkirk Rd, Laurel, MD 20708
| | - Weilin Shelver
- Biosciences Research Laboratory, 1605 Albrecht Blvd, Fargo, ND 58105
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Chiesa OA, Feng S, Kijak P, Smith EA, Li H, Qiu J. Plasma pharmacokinetics of ceftiofur metabolite desfuroylceftiofur cysteine disulfide in holstein steers: application of nonlinear mixed-effects modeling. J Vet Pharmacol Ther 2015; 39:149-56. [PMID: 26112893 DOI: 10.1111/jvp.12245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 05/29/2015] [Indexed: 11/27/2022]
Abstract
Eight clinically normal and drug-naïve Holstein steers were dosed with ceftiofur sodium at 2.2 mg/kg body weight intramuscularly. Doses were given at 24-h intervals for 5 days. Prior to the first dose and after all injections, blood samples were collected serially for determination of plasma concentrations of one of ceftiofur's main metabolites, desfuroylceftiofur cysteine disulfide (DCCD). A nonlinear mixed-effect model was used to analyze the plasma concentration data. A stochastic approximation expectation maximization (SAEM) algorithm in MONOLIX version 4.2.2 was used to approximate the likelihood of the nonlinear mixed-effect model and to estimate the population parameters. In addition, simulation studies were conducted to justify the model and demonstrate how to interpret the model parameters given different scenarios.
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Affiliation(s)
- O A Chiesa
- Office of Research, Division of Applied Veterinary Research, Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, USA
| | - S Feng
- Office of Research, Division of Residue Chemistry, Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, USA
| | - P Kijak
- Office of Research, Division of Residue Chemistry, Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, USA
| | - E A Smith
- Office of Research, Division of Applied Veterinary Research, Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, USA
| | - H Li
- Office of Research, Division of Residue Chemistry, Center for Veterinary Medicine, U.S. Food and Drug Administration, Laurel, MD, USA
| | - J Qiu
- Office of Biostatistics, Division I, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD, USA
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Feng S, Chiesa OA, Kijak P, Chattopadhaya C, Lancaster V, Smith EA, Girard L, Sklenka S, Li H. Determination of ceftiofur metabolite desfuroylceftiofur cysteine disulfide in bovine tissues using liquid chromatography-tandem mass spectrometry as a surrogate marker residue for ceftiofur. J Agric Food Chem 2014; 62:5011-5019. [PMID: 24819974 DOI: 10.1021/jf405423e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Ceftiofur is a widely used cephalosporin β-lactam antibiotic with frequently reported residue violations. This paper reports a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for determining a ceftiofur metabolite, desfuroylceftiofur cysteine disulfide (DCCD), in bovine kidney, liver, and muscle tissues. Incurred tissue samples were obtained from dosed animals and analyzed to evaluate the utility of the method. For kidney, the target tissue, the method utilized a simple extraction with phosphate buffer followed by solid phase extraction (SPE) cleanup. For liver and muscle, acetonitrile and hexane were used to remove most proteins and fat from the initial buffer extract before the SPE cleanup. Method accuracy was between 97 and 107%, and the coefficient of variation was between 3.4 and 11.0% for all three types of tissues. The relationship between the new and regulatory methods for bovine kidney was established. It was concluded that DCCD is a suitable surrogate marker residue for ceftiofur in bovine kidney.
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Affiliation(s)
- Shixia Feng
- Center for Veterinary Medicine, Office of Research, U.S. Food and Drug Administration, 8401 Muirkirk Road, Laurel, Maryland 20708, United States
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Tai SS, Cargile N, Barnes CJ, Kijak P. Determination of Pyrantel in Swine Liver by Flame Ionization Gas Chromatography and Confirmation by Gas Chromatography /Mass Spectrometry. J AOAC Int 1990. [DOI: 10.1093/jaoac/73.6.883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
During an evaluation of the gas chromatography/mass spectrometry (GC/MS) confirmatory procedure of Lynch and Bartoluccl for pyrantel residues in swine tissues, we developed a GC flame Ionization method for quantltatlng pyrantel residues In extracts of swine liver. The method was subjected to trial principally In the laboratories of Biospherics, Inc., using control liver, fortified control liver, and Incurred liver tissue samples. Although the method does not meet all of the current Food and Drug Administration criteria, it compares favorably to the official determinative method. Portions of the same extract can be used for quantitation and for GC/MS confirmation, true recoveries appear to be slightly higher, and an internal standard Is not required. The precision of this method equals or exceeds that of the official determinative method.
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Affiliation(s)
- Susan S.C Tai
- National Institute of Standards and Technology, Organic Analytical Research Division, Gaithersburg, MD 20899
| | - Nancy Cargile
- BASF, PO Box 13528, Research Triangle Park, NC 27709
| | - Charlie J Barnes
- Food and Drug Administration, Division of Veterinary Medical Research, BARC-E, Bldg 328A, Center Rd, Beltsville, MD 20705
| | - Philip Kijak
- Food and Drug Administration, Division of Veterinary Medical Research, BARC-E, Bldg 328A, Center Rd, Beltsville, MD 20705
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Tai SS, Cargile N, Barnes CJ, Kijak P. Determination of pyrantel in swine liver by flame ionization gas chromatography and confirmation by gas chromatography/mass spectrometry. J Assoc Off Anal Chem 1990; 73:883-6. [PMID: 2289920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
During an evaluation of the gas chromatography/mass spectrometry (GC/MS) confirmatory procedure of Lynch and Bartolucci for pyrantel residues in swine tissues, we developed a GC flame ionization method for quantitating pyrantel residues in extracts of swine liver. The method was subjected to trial principally in the laboratories of Biospherics, Inc., using control liver, fortified control liver, and incurred liver tissue samples. Although the method does not meet all of the current Food and Drug Administration criteria, it compares favorably to the official determinative method. Portions of the same extract can be used for quantitation and for GC/MS confirmation, true recoveries appear to be slightly higher, and an internal standard is not required. The precision of this method equals or exceeds that of the official determinative method.
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Affiliation(s)
- S S Tai
- National Institute of Standards and Technology, Organic Analytical Research Division, Gaithersburg, MD 20899
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