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Ben Attig J, Latrous L, Galvan I, Zougagh M, Ríos Á. Rapid determination of malondialdehyde in serum samples using a porphyrin-functionalized magnetic graphene oxide electrochemical sensor. Anal Bioanal Chem 2023; 415:2071-2080. [PMID: 36808275 PMCID: PMC10079708 DOI: 10.1007/s00216-023-04594-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/07/2023] [Accepted: 02/06/2023] [Indexed: 02/23/2023]
Abstract
An electrochemical sensor based on a screen-printed carbon electrode (SPCE) modified with porphyrin-functionalized magnetic graphene oxide (TCPP-MGO) was developed for the sensitive and selective determination of malondialdehyde (MDA), an important biomarker of oxidative damage, in serum samples. The coupling of TCPP with MGO allows the exploitation of the magnetic properties of the material for separation, preconcentration, and manipulation of analyte, which is selectively captured onto the TCPP-MGO surface. The electron-transfer capability in the SPCE was improved through derivatization of MDA with diaminonaphthalene (DAN) (MDA-DAN). TCPP-MGO-SPCEs have been employed to monitor the differential pulse voltammetry (DVP) levels of the whole material, which is related to the amount of the captured analyte. Under optimum conditions, the nanocomposite-based sensing system has proved to be suitable for the monitoring of MDA, presenting a wide linear range (0.01-100 µM) with a correlation coefficient of 0.9996. The practical limit of quantification (P-LOQ) of the analyte was 0.010 µM, and the relative standard deviation (RSD) was 6.87% for 30 µM MDA concentration. Finally, the developed electrochemical sensor has demonstrated to be adequate for bioanalytical applications, presenting an excellent analytical performance for the routine monitoring of MDA in serum samples.
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Affiliation(s)
- Jihène Ben Attig
- Department of Analytical Chemistry and Food Technology, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Campus Universitario, 13071, Ciudad Real, Spain.,Regional Institute for Applied Scientific Research, IRICA, Camilo José Cela Avenue, E-13005, Ciudad Real, Spain.,Laboratoire de Chimie Analytique Et Electrochimie, Department of Chemistry, Faculty of Sciences of Tunis, University of Tunis El Manar, University Campus of El Manar II, 2092, Tunis, Tunisia
| | - Latifa Latrous
- Laboratoire de Chimie Minérale Appliquée, Department of Chemistry, Faculty of Sciences of Tunis, University of Tunis El Manar, University Campus of El Manar II, 2092, Tunis, Tunisia
| | - Ismael Galvan
- Department of Evolutionary Ecology, National Museum of Natural Sciences, CSIC, 28006, Madrid, Spain
| | - Mohammed Zougagh
- Regional Institute for Applied Scientific Research, IRICA, Camilo José Cela Avenue, E-13005, Ciudad Real, Spain.,Department of Analytical Chemistry and Food Technology, Faculty of Pharmacy, University of Castilla-La Mancha, 02071, Albacete, Spain
| | - Ángel Ríos
- Department of Analytical Chemistry and Food Technology, Faculty of Chemical Sciences and Technologies, University of Castilla-La Mancha, Campus Universitario, 13071, Ciudad Real, Spain. .,Regional Institute for Applied Scientific Research, IRICA, Camilo José Cela Avenue, E-13005, Ciudad Real, Spain.
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Urinary Carnosinase-1 Excretion is Associated with Urinary Carnosine Depletion and Risk of Graft Failure in Kidney Transplant Recipients: Results of the TransplantLines Cohort Study. Antioxidants (Basel) 2021; 10:antiox10071102. [PMID: 34356335 PMCID: PMC8301129 DOI: 10.3390/antiox10071102] [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: 05/25/2021] [Revised: 06/26/2021] [Accepted: 07/06/2021] [Indexed: 11/16/2022] Open
Abstract
Carnosine affords protection against oxidative and carbonyl stress, yet high concentrations of the carnosinase-1 enzyme may limit this. We recently reported that high urinary carnosinase-1 is associated with kidney function decline and albuminuria in patients with chronic kidney disease. We prospectively investigated whether urinary carnosinase-1 is associated with a high risk for development of late graft failure in kidney transplant recipients (KTRs). Carnosine and carnosinase-1 were measured in 24 h urine in a longitudinal cohort of 703 stable KTRs and 257 healthy controls. Cox regression was used to analyze the prospective data. Urinary carnosine excretions were significantly decreased in KTRs (26.5 [IQR 21.4–33.3] µmol/24 h versus 34.8 [IQR 25.6–46.8] µmol/24 h; p < 0.001). In KTRs, high urinary carnosinase-1 concentrations were associated with increased risk of undetectable urinary carnosine (OR 1.24, 95%CI [1.06–1.45]; p = 0.007). During median follow-up for 5.3 [4.5–6.0] years, 84 (12%) KTRs developed graft failure. In Cox regression analyses, high urinary carnosinase-1 excretions were associated with increased risk of graft failure (HR 1.73, 95%CI [1.44–2.08]; p < 0.001) independent of potential confounders. Since urinary carnosine is depleted and urinary carnosinase-1 imparts a higher risk for graft failure in KTRs, future studies determining the potential of carnosine supplementation in these patients are warranted.
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Hasuoka PE, Iglesias JP, Teves M, Kaplan MM, Ferrúa NH, Pacheco PH. Selenomethionine administration decreases the oxidative stress induced by post mortem ischemia in the heart, liver and kidneys of rats. Biometals 2021; 34:831-840. [PMID: 33913063 DOI: 10.1007/s10534-021-00310-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 04/19/2021] [Indexed: 11/28/2022]
Abstract
Selenium is an essential element in human and animal metabolism integrated into the catalytic site of glutathione peroxidase (GPX1), an antioxidant enzyme that protects cells from damage caused by reactive oxygen species (ROS). Oxidative stress refers the imbalance between ROS and antioxidant defense systems. It generates alterations of DNA, proteins and lipid peroxidation. The imbalance occurs particularly during ischemia and lack of postmortem perfusion. This mechanism is of relevance in transplant organs, affecting their survival. The aim of this research is to evaluate the effect of seleno-methionine (SeMet) as a protective agent against postmortem ischemia injury in transplant organs. Wistar rats were orally administered with SeMet. After sacrifice, liver, heart and kidney samples were collected at different postmortem intervals (PMIs). SeMet administration produced a significant increase of Se concentration in the liver (65%, p < 0.001), heart (40%, p < 0.01) and kidneys (45%, p < 0.05). Levels of the oxidative stress marker malondialdehyde (MDA) decreased significantly compared to control in the heart (0.21 ± 0.04 vs. 0.12 ± 0.02 mmol g-1) and kidneys (0.41 ± 0.02 vs. 0.24 ± 0.03 mmol g-1) in a PMI of 1-12 h (p < 0.01). After SeMet administration for 21 days, a significant increase in GPX1 activity was observed in the liver (80%, p < 0.001), kidneys (74%, p < 0.01) and heart (35%, p < 0.05). SeMet administration to rats significantly decreased the oxidative stress in the heart, liver and kidneys of rats generated by postmortem ischemia.
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Affiliation(s)
- Paul E Hasuoka
- Instituto de Química San Luis (INQUISAL-CONICET), Chacabuco y Pedernera, 5700, San Luis, Argentina
| | - Juan P Iglesias
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, 5700, San Luis, Argentina
| | - Mauricio Teves
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, 5700, San Luis, Argentina
| | - Marcos M Kaplan
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, 5700, San Luis, Argentina
| | - Nelson H Ferrúa
- Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera, 5700, San Luis, Argentina
| | - Pablo H Pacheco
- Instituto de Química San Luis (INQUISAL-CONICET), Chacabuco y Pedernera, 5700, San Luis, Argentina.
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4
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Fashi A, Cheraghi M, Ebadipur H, Ebadipur H, Zamani A, Badiee H, Pedersen-Bjergaard S. Exploiting agarose gel modified with glucose-fructose syrup as a green sorbent in rotating-disk sorptive extraction technique for the determination of trace malondialdehyde in biological and food samples. Talanta 2020; 217:121001. [DOI: 10.1016/j.talanta.2020.121001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 12/15/2022]
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5
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Grünenwald M, Adams MB, Carter CG, Nichols DS, Koppe W, Verlhac-Trichet V, Schierle J, Adams LR. Pigment-depletion in Atlantic salmon (Salmo salar) post-smolt starved at elevated temperature is not influenced by dietary carotenoid type and increasing α-tocopherol level. Food Chem 2019; 299:125140. [PMID: 31299520 DOI: 10.1016/j.foodchem.2019.125140] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/30/2019] [Accepted: 07/05/2019] [Indexed: 02/08/2023]
Abstract
Pigment-depletion in the fillets of farmed Atlantic salmon (Salmo salar) arises after periods of elevated water temperatures with voluntary starving. This study tested the effects of dietary pre-loading with different pigment carotenoids (astaxanthin and/or canthaxanthin) combined with two α-tocopherol levels (normal and high: 500 and 1000 mg/kg, respectively) on pigment-depletion in vivo in Atlantic salmon after four weeks of challenge. We also tested whether oxidative stress manifested as an underlying depletion mechanism. Carotenoid levels in whole fillet homogenates were not decreased significantly post-challenge but fillet α-tocopherol concentrations were increased significantly in contrast to decreased oxidative stress indices. However, image analysis revealed localised fillet pigment-depletion following all dietary treatments. These data imply that localised pigment-depletion was not prevented by pre-loading of the fillet with different carotenoid-types/mixtures and increased of α-tocopherol levels from normal to high, respectively. Further, we suggest that oxidative stress might not facilitate pigment-depletion in vivo.
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Affiliation(s)
- Martin Grünenwald
- Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 49, Hobart, TAS 7001, Australia.
| | - Mark B Adams
- Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 49, Hobart, TAS 7001, Australia.
| | - Chris G Carter
- Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 49, Hobart, TAS 7001, Australia.
| | - David S Nichols
- Central Science Laboratory, University of Tasmania, Private Bag 51, Hobart, TAS 7001, Australia.
| | - Wolfgang Koppe
- Skretting Aquaculture Research Centre, Sjøhagen 3, 4016 Stavanger, Norway.
| | - Viviane Verlhac-Trichet
- DSM Nutritional Products France, Animal Nutrition & Health R&D, 1 Bd d'Alsace, 68128 Village-Neuf, France.
| | - Joseph Schierle
- DSM Nutritional Products, ARC, Wurmisweg 576, CH-4303 Kaiseraugst, Switzerland.
| | - Louise R Adams
- Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 49, Hobart, TAS 7001, Australia.
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6
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Bioanalytical and Mass Spectrometric Methods for Aldehyde Profiling in Biological Fluids. TOXICS 2019; 7:toxics7020032. [PMID: 31167424 PMCID: PMC6630274 DOI: 10.3390/toxics7020032] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 05/07/2019] [Accepted: 05/22/2019] [Indexed: 12/11/2022]
Abstract
Human exposure to aldehydes is implicated in multiple diseases including diabetes, cardiovascular diseases, neurodegenerative disorders (i.e., Alzheimer’s and Parkinson’s Diseases), and cancer. Because these compounds are strong electrophiles, they can react with nucleophilic sites in DNA and proteins to form reversible and irreversible modifications. These modifications, if not eliminated or repaired, can lead to alteration in cellular homeostasis, cell death and ultimately contribute to disease pathogenesis. This review provides an overview of the current knowledge of the methods and applications of aldehyde exposure measurements, with a particular focus on bioanalytical and mass spectrometric techniques, including recent advances in mass spectrometry (MS)-based profiling methods for identifying potential biomarkers of aldehyde exposure. We discuss the various derivatization reagents used to capture small polar aldehydes and methods to quantify these compounds in biological matrices. In addition, we present emerging mass spectrometry-based methods, which use high-resolution accurate mass (HR/AM) analysis for characterizing carbonyl compounds and their potential applications in molecular epidemiology studies. With the availability of diverse bioanalytical methods presented here including simple and rapid techniques allowing remote monitoring of aldehydes, real-time imaging of aldehydic load in cells, advances in MS instrumentation, high performance chromatographic separation, and improved bioinformatics tools, the data acquired enable increased sensitivity for identifying specific aldehydes and new biomarkers of aldehyde exposure. Finally, the combination of these techniques with exciting new methods for single cell analysis provides the potential for detection and profiling of aldehydes at a cellular level, opening up the opportunity to minutely dissect their roles and biological consequences in cellular metabolism and diseases pathogenesis.
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Plasma Malondialdehyde and Risk of New-Onset Diabetes after Transplantation in Renal Transplant Recipients: A Prospective Cohort Study. J Clin Med 2019; 8:jcm8040453. [PMID: 30987358 PMCID: PMC6518172 DOI: 10.3390/jcm8040453] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 03/29/2019] [Accepted: 03/30/2019] [Indexed: 12/14/2022] Open
Abstract
New-onset diabetes after transplantation (NODAT) is a frequent complication in renal transplant recipients (RTR). Although oxidative stress has been associated with diabetes mellitus, data regarding NODAT are limited. We aimed to prospectively investigate the long-term association between the oxidative stress biomarker malondialdehyde (measured by high-performance liquid chromatography) and NODAT in an extensively phenotyped cohort of non-diabetic RTR with a functioning graft ≥1 year. We included 516 RTR (51 ± 13 years-old, 57% male). Median plasma malondialdehyde (MDA) was 2.55 (IQR, 1.92–3.66) µmol/L. During a median follow-up of 5.3 (IQR, 4.6–6.0) years, 56 (11%) RTR developed NODAT. In Cox proportional-hazards regression analyses, MDA was inversely associated with NODAT, independent of immunosuppressive therapy, transplant-specific covariates, lifestyle, inflammation, and metabolism parameters (HR, 0.55; 95% CI, 0.36–0.83 per 1-SD increase; p < 0.01). Dietary antioxidants intake (e.g., vitamin E, α-lipoic acid, and linoleic acid) were effect-modifiers of the association between MDA and NODAT, with particularly strong inverse associations within the subgroup of RTR with relatively higher dietary antioxidants intake. In conclusion, plasma MDA concentration is inversely and independently associated with long-term risk of NODAT in RTR. Our findings support a potential underrecognized role of oxidative stress in post-transplantation glucose homeostasis.
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Minović I, Eisenga MF, Riphagen IJ, van den Berg E, Kootstra-Ros J, Frenay ARS, van Goor H, Rimbach G, Esatbeyoglu T, Levy AP, Gaillard CAJM, Geleijnse JM, Eggersdorfer ML, Navis GJ, Kema IP, Bakker SJL. Circulating Haptoglobin and Metabolic Syndrome in Renal Transplant Recipients. Sci Rep 2017; 7:14264. [PMID: 29079835 PMCID: PMC5660219 DOI: 10.1038/s41598-017-14302-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 10/09/2017] [Indexed: 12/17/2022] Open
Abstract
Haptoglobin (Hp) is an acute phase protein that has recently been linked to components of the metabolic syndrome (MetS). We aimed to evaluate Hp as marker of MetS, and to assess its association with long-term outcome in renal transplant recipients (RTR). We measured plasma Hp in a prospective cohort of 699 stable RTR and 149 healthy controls. Median plasma Hp concentration in RTR was 1.4 [interquartile range (IQR), 1.0–1.8] g/L, which was higher compared to 1.1 [0.9–1.4] g/L in controls (P < 0.001). Hp was independently associated with the MetS (β = 0.10) (P = 0.005). During follow-up of 5.4 [4.8–6.1] years, 150 (21%) recipients died, of whom 60 (9%) due to cardiovascular causes, and 83 (12%) RTR developed graft failure. High (≥2.0 g/L) and low (≤0.9 g/L) plasma Hp were associated with increased risk of mortality (HR’s 2.3 [1.3–4.1] and 1.9 [1.0–3.5], resp.), predominantly cardiovascular. The association of high Hp lost significance upon adjustment for inflammation markers (HR 1.5 [0.8–2.7]), while low Hp was independently associated with mortality (HR 2.2 [1.2–4.0]). Hp was not associated with graft failure (P = 0.49). In conclusion, plasma Hp is independently associated with MetS in RTR. Importantly, high and low Hp are associated with increased mortality risk, independent of MetS.
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Affiliation(s)
- Isidor Minović
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands. .,Top Institute Food and Nutrition, Nieuwe Kanaal 9-A, 6709 PA, Wageningen, The Netherlands. .,Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands.
| | - Michele F Eisenga
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Ineke J Riphagen
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Else van den Berg
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Jenny Kootstra-Ros
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Anne-Roos S Frenay
- Department of Pathology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Harry van Goor
- Department of Pathology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Gerald Rimbach
- Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Tuba Esatbeyoglu
- Institute of Human Nutrition and Food Science, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Andy P Levy
- Faculty of Medicine, Technion Institute of Technology, Efron Street 1, Haifa, Israel
| | - Carlo A J M Gaillard
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Johanna M Geleijnse
- Division of Human Nutrition, Wageningen University, Droevendaalsesteeg 4, 6708 PB, Wageningen, The Netherlands
| | | | - Gerjan J Navis
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Ido P Kema
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands
| | - Stephan J L Bakker
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB, Groningen, The Netherlands.,Top Institute Food and Nutrition, Nieuwe Kanaal 9-A, 6709 PA, Wageningen, The Netherlands
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Kim B, Jung W, Kho Y. Quantification of Malondialdehyde in Human Urine by HPLC-DAD and Derivatization with 2,4-Dinitrophenylhydrazine. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11143] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Boyoung Kim
- Department of Health Environmental and Safety; Eulji University; Seongnam 13135 Republic of Korea
| | - Woong Jung
- Department of Emergency Medicine, School of Medicine; KyungHee University; Seoul 05278 Republic of Korea
| | - Younglim Kho
- Department of Health Environmental and Safety; Eulji University; Seongnam 13135 Republic of Korea
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10
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Dator R, Carrà A, Maertens L, Guidolin V, Villalta PW, Balbo S. A High Resolution/Accurate Mass (HRAM) Data-Dependent MS 3 Neutral Loss Screening, Classification, and Relative Quantitation Methodology for Carbonyl Compounds in Saliva. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:608-618. [PMID: 27785693 PMCID: PMC5772964 DOI: 10.1007/s13361-016-1521-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 09/27/2016] [Accepted: 09/27/2016] [Indexed: 06/06/2023]
Abstract
Reactive carbonyl compounds (RCCs) are ubiquitous in the environment and are generated endogenously as a result of various physiological and pathological processes. These compounds can react with biological molecules inducing deleterious processes believed to be at the basis of their toxic effects. Several of these compounds are implicated in neurotoxic processes, aging disorders, and cancer. Therefore, a method characterizing exposures to these chemicals will provide insights into how they may influence overall health and contribute to disease pathogenesis. Here, we have developed a high resolution accurate mass (HRAM) screening strategy allowing simultaneous identification and relative quantitation of DNPH-derivatized carbonyls in human biological fluids. The screening strategy involves the diagnostic neutral loss of hydroxyl radical triggering MS3 fragmentation, which is only observed in positive ionization mode of DNPH-derivatized carbonyls. Unique fragmentation pathways were used to develop a classification scheme for characterizing known and unanticipated/unknown carbonyl compounds present in saliva. Furthermore, a relative quantitation strategy was implemented to assess variations in the levels of carbonyl compounds before and after exposure using deuterated d 3 -DNPH. This relative quantitation method was tested on human samples before and after exposure to specific amounts of alcohol. The nano-electrospray ionization (nano-ESI) in positive mode afforded excellent sensitivity with detection limits on-column in the high-attomole levels. To the best of our knowledge, this is the first report of a method using HRAM neutral loss screening of carbonyl compounds. In addition, the method allows simultaneous characterization and relative quantitation of DNPH-derivatized compounds using nano-ESI in positive mode. Graphical Abstract ᅟ.
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Affiliation(s)
- Romel Dator
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, Minneapolis, MN, 55455, USA
| | - Andrea Carrà
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, Minneapolis, MN, 55455, USA
| | - Laura Maertens
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, Minneapolis, MN, 55455, USA
| | - Valeria Guidolin
- Department of Analytical Chemistry, University of Turin, Via Pietro Giuria 5, 10125, Turin, Italy
| | - Peter W Villalta
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, Minneapolis, MN, 55455, USA
| | - Silvia Balbo
- Masonic Cancer Center, University of Minnesota, 2231 6th Street SE, Minneapolis, MN, 55455, USA.
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A simple graphene-based pipette tip solid-phase extraction of malondialdehyde from human plasma and its determination by spectrofluorometry. Anal Bioanal Chem 2016; 408:4907-15. [DOI: 10.1007/s00216-016-9577-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 03/04/2016] [Accepted: 04/18/2016] [Indexed: 10/21/2022]
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12
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Hannan PA, Khan JA, Iqbal Z, Ullah I, Rehman WU, Rehman M, Nasir F, Khan A, Ismail, Muhammad S, Hassan M. Simultaneous Determination of Endogenous Antioxidants and Malondialdehyde by RP-HPLC Coupled with Electrochemical Detector in Serum Samples. J LIQ CHROMATOGR R T 2015. [DOI: 10.1080/10826076.2015.1012522] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | | | - Zafar Iqbal
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Irfan Ullah
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Waheed Ur Rehman
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Mehreen Rehman
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Fazli Nasir
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Abad Khan
- Department of Pharmacy, University of Swabi, Swabi, Pakistan
| | - Ismail
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
| | - Salar Muhammad
- Department of Pharmacy, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Muhammad Hassan
- Department of Pharmacy, University of Peshawar, Peshawar, Pakistan
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13
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Atlantic salmon (Salmo salar L.) as a marine functional source of gamma-tocopherol. Mar Drugs 2014; 12:5944-59. [PMID: 25501796 PMCID: PMC4278211 DOI: 10.3390/md12125944] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 11/21/2014] [Accepted: 11/26/2014] [Indexed: 01/21/2023] Open
Abstract
Gamma tocopherol (gT) exhibits beneficial cardiovascular effects partly due to its anti-inflammatory activity. Important sources of gT are vegetable oils. However, little is known to what extent gT can be transferred into marine animal species such as Atlantic salmon by feeding. Therefore, in this study we have investigated the transfer of dietary gT into salmon. To this end, fish were fed a diet supplemented with 170 ppm gT for 16 weeks whereby alpha tocopherol levels were adjusted to 190 ppm in this and the control diet. Feeding gT-rich diets resulted in a three-fold increase in gT concentrations in the liver and fillet compared to non-gT-supplemented controls. Tissue alpha tocopherol levels were not decreased indicating no antagonistic interaction between gamma- and alpha tocopherol in salmon. The concentration of total omega 3 fatty acids slightly increased in response to dietary gT. Furthermore, dietary gT significantly decreased malondialdehyde in the fillet, determined as a biomarker of lipid peroxidation. In the liver of gT fed salmon we observed an overall down-regulation of genes involved in lipid homeostasis. Additionally, gT improved the antioxidant capacity by up-regulating Gpx4a gene expression in the pyloric caeca. We suggest that Atlantic salmon may provide a marine functional source capable of enriching gT for human consumption.
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