1
|
Croppi G, Zhou Y, Yang R, Bian Y, Zhao M, Hu Y, Ruan BH, Yu J, Wu F. Discovery of an Inhibitor for Bacterial 3-Mercaptopyruvate Sulfurtransferase that Synergistically Controls Bacterial Survival. Cell Chem Biol 2020; 27:1483-1499.e9. [DOI: 10.1016/j.chembiol.2020.10.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 08/12/2020] [Accepted: 10/22/2020] [Indexed: 12/19/2022]
|
2
|
Han GC, Li H, Ferranco A, Tao Zhan, Cheng Y, Chen Z, Xue M, Feng XZ, Kraatz HB. The construction of a simple sensor for the simultaneous detection of nitrite and thiosulfate by heme catalysis. RSC Adv 2020; 10:35007-35016. [PMID: 35515684 PMCID: PMC9056839 DOI: 10.1039/d0ra06942f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 09/10/2020] [Indexed: 11/21/2022] Open
Abstract
Several simple sensors were fabricated through a one-step method. By depositing electro-active compounds, such as β-cyclodextrins (β-CD), heme, dopamine (DA), or Fc-ECG, onto a screen-printed electrode (SPE), the successful simultaneous detection of nitrite (NO2 -) and thiosulfate (S2O3 2-) ions was observed. Under optimal operating conditions, the notable electrocatalytic abilities of a Heme/SPE sensor were detected for the oxidation of NO2 - and S2O3 2-, with remarkable peak potential differences, after characterization via SEM, CV, and DPV. Linear relationships were obtained in the ranges of 5.0-200.0 μmol L-1 and 1.0-100.0 μmol L-1 for the current response versus concentration of NO2 - and S2O3 2-, respectively. The limits of detection were determined to be 1.67 and 0.33 μmol L-1 while the sensitivities of detection were noted to be 0.43 and 1.43 μA μM-1 cm-2, respectively. During the detection of NO2 - and S2O3 2-, no interfering common ions were observed. Furthermore, average recoveries from 96.0 to 104.3% and a total R.S.D. of less than 3.1% were found for the detection of NO2 - and S2O3 2- in pickled juice and tap water using the simple sensor. These results showed that rapid and precise measurements for actual application in NO2 - and S2O3 2- detection could be conducted in food samples, indicating a potential use in food safety.
Collapse
Affiliation(s)
- Guo-Cheng Han
- School of Life and Environmental Sciences, Guilin University of Electronic Technology Guilin 541004 P. R. China
| | - Huifang Li
- School of Life and Environmental Sciences, Guilin University of Electronic Technology Guilin 541004 P. R. China
| | - Annaleizle Ferranco
- Department of Physical and Environmental Sciences, University of Toronto Scarborough Campus Toronto Ontario M1C 1A4 Canada
| | - Tao Zhan
- School of Life and Environmental Sciences, Guilin University of Electronic Technology Guilin 541004 P. R. China
| | - Yunyun Cheng
- School of Life and Environmental Sciences, Guilin University of Electronic Technology Guilin 541004 P. R. China
| | - Zhencheng Chen
- School of Life and Environmental Sciences, Guilin University of Electronic Technology Guilin 541004 P. R. China
| | - Mingyue Xue
- School of Life and Environmental Sciences, Guilin University of Electronic Technology Guilin 541004 P. R. China
| | - Xiao-Zhen Feng
- School of Life and Environmental Sciences, Guilin University of Electronic Technology Guilin 541004 P. R. China
| | - Heinz-Bernhard Kraatz
- Department of Physical and Environmental Sciences, University of Toronto Scarborough Campus Toronto Ontario M1C 1A4 Canada
| |
Collapse
|
3
|
Yadav PK, Vitvitsky V, Carballal S, Seravalli J, Banerjee R. Thioredoxin regulates human mercaptopyruvate sulfurtransferase at physiologically-relevant concentrations. J Biol Chem 2020; 295:6299-6311. [PMID: 32179647 DOI: 10.1074/jbc.ra120.012616] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/13/2020] [Indexed: 11/06/2022] Open
Abstract
3-Mercaptopyruvate sulfur transferase (MPST) catalyzes the desulfuration of 3-mercaptopyruvate (3-MP) and transfers sulfane sulfur from an enzyme-bound persulfide intermediate to thiophilic acceptors such as thioredoxin and cysteine. Hydrogen sulfide (H2S), a signaling molecule implicated in many physiological processes, can be released from the persulfide product of the MPST reaction. Two splice variants of MPST, differing by 20 amino acids at the N terminus, give rise to the cytosolic MPST1 and mitochondrial MPST2 isoforms. Here, we characterized the poorly-studied MPST1 variant and demonstrated that substitutions in its Ser-His-Asp triad, proposed to serve a general acid-base role, minimally affect catalytic activity. We estimated the 3-MP concentration in murine liver, kidney, and brain tissues, finding that it ranges from 0.4 μmol·kg-1 in brain to 1.4 μmol·kg-1 in kidney. We also show that N-acetylcysteine, a widely-used antioxidant, is a poor substrate for MPST and is unlikely to function as a thiophilic acceptor. Thioredoxin exhibits substrate inhibition, increasing the KM for 3-MP ∼15-fold compared with other sulfur acceptors. Kinetic simulations at physiologically-relevant substrate concentrations predicted that the proportion of sulfur transfer to thioredoxin increases ∼3.5-fold as its concentration decreases from 10 to 1 μm, whereas the total MPST reaction rate increases ∼7-fold. The simulations also predicted that cysteine is a quantitatively-significant sulfane sulfur acceptor, revealing MPST's potential to generate low-molecular-weight persulfides. We conclude that the MPST1 and MPST2 isoforms are kinetically indistinguishable and that thioredoxin modulates the MPST-catalyzed reaction in a physiologically-relevant concentration range.
Collapse
Affiliation(s)
- Pramod Kumar Yadav
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan 48109-0600
| | - Victor Vitvitsky
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan 48109-0600
| | - Sebastián Carballal
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan 48109-0600.,Departamento de Bioquímica, Facultad de Medicina and Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo 11800, Uruguay
| | - Javier Seravalli
- Department of Biochemistry and the Redox Biology Center, University of Nebraska, Lincoln, Nebraska 68588
| | - Ruma Banerjee
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, Michigan 48109-0600
| |
Collapse
|
4
|
Determination of free cyano-cobinamide in swine and rabbit plasma by liquid chromatography tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1124:100-108. [PMID: 31185415 DOI: 10.1016/j.jchromb.2019.05.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 05/16/2019] [Accepted: 05/18/2019] [Indexed: 11/20/2022]
Abstract
In recent years, Cobinamide (Cbi) has shown promise as a therapeutic for cyanide poisoning. There are several forms of Cbi based on the identity of the ligands bound to the cobalt in Cbi and these different forms of Cbi have divergent behavior (e.g., the aquo and hydroxo forms of Cbi readily bind to proteins, limiting their distribution significantly, whereas [Cbi(CN)2] does not). While current analysis techniques only measure total Cbi, methods to elucidate the behavior of 'available' Cbi versus cyanide-complexed Cbi would be valuable for biomedical and pharmacokinetic studies. Therefore, a method was developed for the analysis of cyanide-complexed Cbi in plasma via liquid chromatography tandem mass spectrometry (LC-MS-MS). Plasma samples were prepared by denaturing proteins with 10% ammonium hydroxide in acetonitrile. The resulting mixture was centrifuged, and the supernatant was removed, dried, and reconstituted. Cyanide-complexed Cbi was then analyzed via LC-MS-MS. The limit of detection was 0.2 μM, and the linear dynamic range was between 1 and 200 μM. The accuracy was 100 ± 17% and the precision, measured by relative standard deviation (%RSD), was ≤18.5%. Carryover, a severe problem when analyzing Cbi via liquid chromatography was eliminated using a polymeric-based stationary phase (PLRP-S) and a controlled washing protocol. The method allowed evaluation of the cyanide-bound and 'available' Cbi from treated animals and, when paired with a method for total Cbi analysis, allows for estimation of Cbi utilization when treating cyanide poisoning.
Collapse
|
5
|
Analysis of potential cyanide antidote, dimethyl trisulfide, in whole blood by dynamic headspace gas chromatography–mass spectroscopy. J Chromatogr A 2019; 1591:71-78. [DOI: 10.1016/j.chroma.2019.01.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/17/2019] [Accepted: 01/21/2019] [Indexed: 12/20/2022]
|
6
|
Tamanna N, Mayengbam S, House JD, Treberg JR. Methionine restriction leads to hyperhomocysteinemia and alters hepatic H 2S production capacity in Fischer-344 rats. Mech Ageing Dev 2018; 176:9-18. [PMID: 30367932 DOI: 10.1016/j.mad.2018.10.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 10/08/2018] [Accepted: 10/23/2018] [Indexed: 02/07/2023]
Abstract
Dietary methionine restriction (MR) increases lifespan in several animal models. Despite low dietary intake of sulphur amino acids, rodents on MR develop hyperhomocysteinemia. On the contrary, MR has been reported to increase H2S production in mice. Enzymes involved in homocysteine metabolism also take part in H2S production and hence, in this study, the impact of MR on hyperhomocysteinemia and H2S production capacity were investigated using Fischer-344 rats assigned either a control or a MR diet for 8 weeks. The MR animals showed elevated plasma homocysteine accompanied with a reduction in liver cysteine content and methylation potential. It was further found that MR decreased cystathionine-β-synthase (CBS) activity in the liver, however, MR increased hepatic cystathionine-γ-lyase (CGL) activity which is the second enzyme in the transsulfuration pathway and also participates in regulating H2S production. The relative contribution of CGL in H2S production increased concomitantly with the increased CGL activity. Additionally, hepatic mercaptopyruvate-sulphur-transferase (MPST) activity also increased in response to MR. Taken together, our results suggest that reduced CBS activity and S-Adenosylmethionine availability contributes to hyperhomocysteinimia in MR animals. Elevated CGL and MPST activities may provide a compensatory mechanism for maintaining hepatic H2S production capacity in response to the decreased CBS activity.
Collapse
Affiliation(s)
- Nahid Tamanna
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB, Canada.
| | - Shyamchand Mayengbam
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada.
| | - James D House
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada.
| | - Jason R Treberg
- Department of Biological Sciences, University of Manitoba, Winnipeg, MB, Canada; Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, Canada; Centre on Aging, University of Manitoba, Winnipeg, MB, Canada.
| |
Collapse
|
7
|
Logue BA, Zhang Z, Manandhar E, Pay AL, Croutch CR, Peters E, Sosna W, Rioux JS, Veress LA, White CW. Determination of methyl isopropyl hydantoin from rat erythrocytes by gas-chromatography mass-spectrometry to determine methyl isocyanate dose following inhalation exposure. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1093-1094:119-127. [PMID: 30015309 DOI: 10.1016/j.jchromb.2018.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/02/2018] [Accepted: 07/03/2018] [Indexed: 10/28/2022]
Abstract
Methyl isocyanate (MIC) is an important precursor for industrial synthesis, but it is highly toxic. MIC causes irritation and damage to the eyes, respiratory tract, and skin. While current treatment is limited to supportive care and counteracting symptoms, promising countermeasures are being evaluated. Our work focuses on understanding the inhalation toxicity of MIC to develop effective therapeutic interventions. However, in-vivo inhalation exposure studies are limited by challenges in estimating the actual respiratory dose, due to animal-to-animal variability in breathing rate, depth, etc. Therefore, a method was developed to estimate the inhaled MIC dose based on analysis of an N-terminal valine hemoglobin adduct. The method features a simple sample preparation scheme, including rapid isolation of hemoglobin, hydrolysis of the hemoglobin adduct with immediate conversion to methyl isopropyl hydantoin (MIH), rapid liquid-liquid extraction, and gas-chromatography mass-spectrometry analysis. The method produced a limit of detection of 0.05 mg MIH/kg RBC precipitate with a dynamic range from 0.05-25 mg MIH/kg. The precision, as measured by percent relative standard deviation, was <8.5%, and the accuracy was within 8% of the nominal concentration. The method was used to evaluate a potential correlation between MIH and MIC internal dose and proved promising. If successful, this method may be used to quantify the true internal dose of MIC from inhalation studies to help determine the effectiveness of MIC therapeutics.
Collapse
Affiliation(s)
- Brian A Logue
- Department of Chemistry and Biochemistry, South Dakota State University, Avera Health and Science, Box 2202, Brookings, SD 57007, United States of America.
| | - Zhiling Zhang
- Department of Chemistry and Biochemistry, South Dakota State University, Avera Health and Science, Box 2202, Brookings, SD 57007, United States of America
| | - Erica Manandhar
- Department of Chemistry and Biochemistry, South Dakota State University, Avera Health and Science, Box 2202, Brookings, SD 57007, United States of America
| | - Adam L Pay
- Department of Chemistry and Biochemistry, South Dakota State University, Avera Health and Science, Box 2202, Brookings, SD 57007, United States of America
| | - Claire R Croutch
- MRIGlobal, 425 Volker Boulevard, Kansas City, MO 64110-2241, United States of America
| | - Eric Peters
- MRIGlobal, 425 Volker Boulevard, Kansas City, MO 64110-2241, United States of America
| | - William Sosna
- MRIGlobal, 425 Volker Boulevard, Kansas City, MO 64110-2241, United States of America
| | - Jacqueline S Rioux
- Pediatrics-Pulmonary Medicine, University of Colorado-Denver, Denver, CO, 80045, United States of America
| | - Livia A Veress
- Pediatrics-Pulmonary Medicine, University of Colorado-Denver, Denver, CO, 80045, United States of America
| | - Carl W White
- Pediatrics-Pulmonary Medicine, University of Colorado-Denver, Denver, CO, 80045, United States of America
| |
Collapse
|
8
|
Logue BA, Manandhar E. Percent residual accuracy for quantifying goodness-of-fit of linear calibration curves. Talanta 2018; 189:527-533. [PMID: 30086955 DOI: 10.1016/j.talanta.2018.07.046] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/10/2018] [Accepted: 07/13/2018] [Indexed: 11/29/2022]
Abstract
Linear models for calibration curves are overwhelmingly created based on minimization of least squares error, with their goodness-of-fit (GOF) quantified using the square of the correlation coefficient (R2). Yet, R2 has well-known disadvantages when used to quantify GOF of calibration curves stemming from its calculation based on the absolute error of the signal (i.e., calculated vs. experimental). These disadvantages are exacerbated when using a geometric series of concentrations for calibration standards (e.g., 1, 2, 5, 10, etc.) and when calibration curves span 2-3 orders of magnitude, which is typical for modern analytical techniques. While there are multiple alternative GOF measures, R2 overwhelmingly persists in the field of Analytical Chemistry as the most reported measure of GOF. We evaluated R2, alternative GOF measures, and multiple quantitative bias parameters, along with residual analysis, for over 60 experimental calibration curves. R2 did a poor job of consistently and accurately quantifying the GOF over the entire calibration curve. This was especially true for situations where the low concentration calibrators were not accurately described by the calibration equation. While other GOF parameters, including the sum of the absolute percent error, mean absolute percent error, and quality coefficient, did a better job of describing GOF of calibration curves, each had significant theoretical and/or practical disadvantages. Therefore, we introduce a descriptive GOF parameter called Percent Residual Accuracy (%RA or PRA) which equally weights the accuracy of all calibrators into a single value, generally falling between 0% and 100%, with 100% representing a perfect fit and a "good" fit for calibration data producing a %RA of 90-100%. The %RA much more effectively described the GOF for the entire calibration range than R2, and it similarly quantified GOF as compared to the other GOF parameters tested. With the performance and practical advantages of %RA, we conclude that it is the most advantageous GOF parameter and that it should be reported as a standard GOF measure for calibration curves.
Collapse
Affiliation(s)
- Brian A Logue
- Department of Chemistry and Biochemistry, South Dakota State University, Avera Health and Science, Box 2202, Brookings, SD 57007, USA.
| | - Erica Manandhar
- Department of Chemistry and Biochemistry, South Dakota State University, Avera Health and Science, Box 2202, Brookings, SD 57007, USA
| |
Collapse
|
9
|
Moeller BM, Crankshaw DL, Briggs J, Nagasawa HT, Patterson SE. In-vitro mercaptopyruvate sulfurtransferase species comparison in humans and common laboratory animals. Toxicol Lett 2017; 274:64-68. [PMID: 28412453 DOI: 10.1016/j.toxlet.2017.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 03/13/2017] [Accepted: 04/10/2017] [Indexed: 01/18/2023]
Abstract
Cyanide is a metabolic poison that inhibits cytochrome c oxidase. Its broad applications in manufacturing and history as an agent of warfare/terror highlight the limitations in approved cyanide antidotes for mass casualties. Sulfanegen, a pre-clinical antidote for cyanide poisoning, exploits an endogenous detoxification pathway and should be amenable to mass-casualty scenarios. Because human studies are unethical, determination of appropriate animal species as models in translational studies for FDA approval under the "Animal Rule" are critical. Here, we compared the specific activities of mercaptopyruvate sulfurtransferase (MST, required for sulfanegen's activity), across common laboratory models of cyanide intoxication, and humans. Human MST activities in erythrocytes (measured as micromole pyruvate/min/106 rbc) were closest to those of Swiss-Webster mice and NZW rabbits. Similar species were selected for a more detailed tissue-specific comparison of MST activities. NZW Rabbits were closest to humans in the liver and kidney mitochondrial fractions, the Swiss-Webster mouse was closest to humans in the liver cytosolic fraction, while C57BL/6 mouse was closest in the kidney cytosolic fraction. These data comparing MST activities in animal models will help justify the use of those specific animals per the animal rule. Interestingly, statistically significant differences were found in MST activities of liver mitochondria between human smokers and non-smokers (p=0.0030).
Collapse
Affiliation(s)
- Bryant M Moeller
- Department of Pharmacology, University of Minnesota, 312 Church St SE, Minneapolis, MN 55455, United States; Center for Drug Design, University of Minnesota, 516 Delaware St SE, Minneapolis, MN 55455, United States
| | - Daune L Crankshaw
- Center for Drug Design, University of Minnesota, 516 Delaware St SE, Minneapolis, MN 55455, United States
| | - Jacquie Briggs
- Center for Drug Design, University of Minnesota, 516 Delaware St SE, Minneapolis, MN 55455, United States
| | - Herbert T Nagasawa
- Center for Drug Design, University of Minnesota, 516 Delaware St SE, Minneapolis, MN 55455, United States
| | - Steven E Patterson
- Center for Drug Design, University of Minnesota, 516 Delaware St SE, Minneapolis, MN 55455, United States.
| |
Collapse
|
10
|
Andreeßen C, Gerlt V, Steinbüchel A. Conversion of cysteine to 3‐mercaptopyruvic acid by bacterial aminotransferases. Enzyme Microb Technol 2017; 99:38-48. [DOI: 10.1016/j.enzmictec.2017.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 12/27/2016] [Accepted: 01/11/2017] [Indexed: 10/20/2022]
|
11
|
Manandhar E, Maslamani N, Petrikovics I, Rockwood GA, Logue BA. Determination of dimethyl trisulfide in rabbit blood using stir bar sorptive extraction gas chromatography-mass spectrometry. J Chromatogr A 2016; 1461:10-7. [DOI: 10.1016/j.chroma.2016.07.046] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 07/11/2016] [Accepted: 07/17/2016] [Indexed: 11/15/2022]
|
12
|
Patterson SE, Moeller B, Nagasawa HT, Vince R, Crankshaw DL, Briggs J, Stutelberg MW, Vinnakota CV, Logue BA. Development of sulfanegen for mass cyanide casualties. Ann N Y Acad Sci 2016; 1374:202-9. [PMID: 27308865 DOI: 10.1111/nyas.13114] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 05/02/2016] [Accepted: 05/04/2016] [Indexed: 01/28/2023]
Abstract
Cyanide is a metabolic poison that inhibits the utilization of oxygen to form ATP. The consequences of acute cyanide exposure are severe; exposure results in loss of consciousness, cardiac and respiratory failure, hypoxic brain injury, and dose-dependent death within minutes to hours. In a mass-casualty scenario, such as an industrial accident or terrorist attack, currently available cyanide antidotes would leave many victims untreated in the short time available for successful administration of a medical countermeasure. This restricted therapeutic window reflects the rate-limiting step of intravenous administration, which requires both time and trained medical personnel. Therefore, there is a need for rapidly acting antidotes that can be quickly administered to large numbers of people. To meet this need, our laboratory is developing sulfanegen, a potential antidote for cyanide poisoning with a novel mechanism based on 3-mercaptopyruvate sulfurtransferase (3-MST) for the detoxification of cyanide. Additionally, sulfanegen can be rapidly administered by intramuscular injection and has shown efficacy in many species of animal models. This article summarizes the journey from concept to clinical leads for this promising cyanide antidote.
Collapse
Affiliation(s)
- Steven E Patterson
- Center for Drug Design, Academic Health Center, the University of Minnesota, Minneapolis, Minnesota
| | - Bryant Moeller
- Center for Drug Design, Academic Health Center, the University of Minnesota, Minneapolis, Minnesota
| | - Herbert T Nagasawa
- Center for Drug Design, Academic Health Center, the University of Minnesota, Minneapolis, Minnesota
| | - Robert Vince
- Center for Drug Design, Academic Health Center, the University of Minnesota, Minneapolis, Minnesota
| | - Daune L Crankshaw
- Center for Drug Design, Academic Health Center, the University of Minnesota, Minneapolis, Minnesota
| | - Jacquie Briggs
- Center for Drug Design, Academic Health Center, the University of Minnesota, Minneapolis, Minnesota
| | - Michael W Stutelberg
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, South Dakota
| | - Chakravarthy V Vinnakota
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, South Dakota
| | - Brian A Logue
- Department of Chemistry and Biochemistry, South Dakota State University, Brookings, South Dakota
| |
Collapse
|
13
|
Simultaneous determination of 3-mercaptopyruvate and cobinamide in plasma by liquid chromatography–tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1008:181-188. [DOI: 10.1016/j.jchromb.2015.11.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 11/16/2015] [Accepted: 11/17/2015] [Indexed: 11/22/2022]
|