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Guan Y, Zhou H, Luo B, Hussain S, Xiong L. Research progress of neonatal hypoxic-ischemic encephalopathy in nonhuman primate models. IBRAIN 2023; 9:183-194. [PMID: 37786551 PMCID: PMC10528769 DOI: 10.1002/ibra.12097] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 02/25/2023] [Accepted: 03/02/2023] [Indexed: 10/04/2023]
Abstract
Neonatal hypoxic-ischemic encephalopathy (HIE) is one of the important complications of neonatal asphyxia, which not only leads to neurological disability but also seriously threatens the life of neonates. Over the years, animal models of HIE have been a research hotspot to find ways to cope with HIE and thereby reduce the risk of neonatal death or disability in moderate-to-severe HIE. By reviewing the literature related to HIE over the years, it was found that nonhuman primates share a high degree of homology with human gross neural anatomy. The basic data on nonhuman primates are not yet complete, so it is urgent to mine and develop new nonhuman primate model data. In recent years, the research on nonhuman primate HIE models has been gradually enriched and the content is more novel. Therefore, the purpose of this review is to further summarize the methods for establishing the nonhuman primate HIE model and to better elucidate the relevance of the nonhuman primate model to humans by observing the behavioral manifestations, neuropathology, and a series of biomarkers of HIE in primates HIE. Finally, the most popular and desirable treatments studied in nonhuman primate models in the past 5 years are summarized.
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Affiliation(s)
- Yi‐Huan Guan
- School of AnesthesiologyZunyi Medical UniversityZunyiChina
| | - Hong‐Su Zhou
- Department of Experimental AnimalsKunming Medical UniversityKunmingChina
| | - Bo‐Yan Luo
- School of PharmacyZunyi Medical UniversityZunyiChina
| | - Sajid Hussain
- NUTECH School of Applied Sciences and HumanitiesNational University of TechnologyIslamabadPakistan
| | - Liu‐Lin Xiong
- School of Pharmacy and Medical Sciences, Faculty of Health SciencesUniversity of South AustraliaAdelaideSouth AustraliaAustralia
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2
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Schöneich S, Ochoa GS, Monzón CM, Synovec RE. Minimum variance optimized Fisher ratio analysis of comprehensive two-dimensional gas chromatography / mass spectrometry data: Study of the pacu fish metabolome. J Chromatogr A 2022; 1667:462868. [DOI: 10.1016/j.chroma.2022.462868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/27/2022] [Accepted: 01/30/2022] [Indexed: 11/25/2022]
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3
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Mota-Rojas D, Villanueva-García D, Solimano A, Muns R, Ibarra-Ríos D, Mota-Reyes A. Pathophysiology of Perinatal Asphyxia in Humans and Animal Models. Biomedicines 2022; 10:biomedicines10020347. [PMID: 35203556 PMCID: PMC8961792 DOI: 10.3390/biomedicines10020347] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/28/2022] [Accepted: 01/28/2022] [Indexed: 12/16/2022] Open
Abstract
Perinatal asphyxia is caused by lack of oxygen delivery (hypoxia) to end organs due to an hypoxemic or ischemic insult occurring in temporal proximity to labor (peripartum) or delivery (intrapartum). Hypoxic–ischemic encephalopathy is the clinical manifestation of hypoxic injury to the brain and is usually graded as mild, moderate, or severe. The search for useful biomarkers to precisely predict the severity of lesions in perinatal asphyxia and hypoxic–ischemic encephalopathy (HIE) is a field of increasing interest. As pathophysiology is not fully comprehended, the gold standard for treatment remains an active area of research. Hypothermia has proven to be an effective neuroprotective strategy and has been implemented in clinical routine. Current studies are exploring various add-on therapies, including erythropoietin, xenon, topiramate, melatonin, and stem cells. This review aims to perform an updated integration of the pathophysiological processes after perinatal asphyxia in humans and animal models to allow us to answer some questions and provide an interim update on progress in this field.
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Affiliation(s)
- Daniel Mota-Rojas
- Neurophysiology, Behavior and Animal Welfare Assessment, Universidad Autónoma Metropolitana (UAM), Mexico City 04960, Mexico
- Correspondence: (D.M.-R.); (D.V.-G.)
| | - Dina Villanueva-García
- Division of Neonatology, National Institute of Health Hospital Infantil de México Federico Gómez, Mexico City 06720, Mexico;
- Correspondence: (D.M.-R.); (D.V.-G.)
| | - Alfonso Solimano
- Department of Pediatrics, University of British Columbia, Vancouver, BC V6H 3V4, Canada;
| | - Ramon Muns
- Livestock Production Sciences Unit, Agri-Food and Biosciences Institute, Hillsborough BT26 6DR, UK;
| | - Daniel Ibarra-Ríos
- Division of Neonatology, National Institute of Health Hospital Infantil de México Federico Gómez, Mexico City 06720, Mexico;
| | - Andrea Mota-Reyes
- School of Medicine and Health Sciences, TecSalud, Instituto Tecnológico y de Estudios Superiores de Monterrey (ITESM), Monterrey 64849, Mexico;
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Wood TR, Vu PT, Comstock BA, Law JB, Mayock DE, Heagerty PJ, Burbacher T, Bammler TK, Juul SE. Cytokine and chemokine responses to injury and treatment in a nonhuman primate model of hypoxic-ischemic encephalopathy treated with hypothermia and erythropoietin. J Cereb Blood Flow Metab 2021; 41:2054-2066. [PMID: 33554708 PMCID: PMC8327104 DOI: 10.1177/0271678x21991439] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Predicting long-term outcome in infants with hypoxic-ischemic encephalopathy (HIE) remains an ongoing clinical challenge. We investigated plasma biomarkers and their association with 6-month outcomes in a nonhuman primate model of HIE with or without therapeutic hypothermia (TH) and erythropoietin (Epo). Twenty-nine Macaca nemestrina were randomized to control cesarean section (n = 7) or 20 min of umbilical cord occlusion (UCO, n = 22) with either no treatment (n = 11) or TH/Epo (n = 11). Initial injury severity was scored using 30-min arterial pH, base deficit, and 10-min Apgar score. Twenty-four plasma cytokines, chemokines, and growth factors were measured 3, 6, 24, 72, and 96 h after UCO. Interleukin 17 (IL-17) and macrophage-derived chemokine (MDC) differentiated the normal/mild from moderate/severe injury groups. Treatment with TH/Epo was associated with increased monocyte chemotactic protein-4 (MCP-4) at 3 h-6h, and significantly lower MCP-4 and MDC at 24 h-72h, respectively. IL-12p40 was lower at 24 h-72h in animals with death/cerebral palsy (CP) compared to survivors without CP. Baseline injury severity was the single best predictor of death/CP, and predictions did not improve with the addition of biomarker data. Circulating chemokines associated with the peripheral monocyte cell lineage are associated with severity of injury and response to therapy, but do not improve ability to predict outcomes.
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Affiliation(s)
- Thomas R Wood
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - Phuong T Vu
- Department of Biostatistics, University of Washington, Seattle, WA, USA.,Center for Clinical and Translational Research, Seattle Children's Research Institute, Seattle, WA, USA
| | - Bryan A Comstock
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Janessa B Law
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - Dennis E Mayock
- Department of Pediatrics, University of Washington, Seattle, WA, USA
| | | | - Thomas Burbacher
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Theo K Bammler
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA, USA
| | - Sandra E Juul
- Department of Pediatrics, University of Washington, Seattle, WA, USA
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5
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Adutwum LA, Kwao JK, Harynuk JJ. Unique ion filter-A data reduction tool for chemometric analysis of raw comprehensive two-dimensional gas chromatography-mass spectrometry data. J Sep Sci 2021; 44:2773-2784. [PMID: 33932270 DOI: 10.1002/jssc.202001127] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 04/17/2021] [Accepted: 04/27/2021] [Indexed: 11/07/2022]
Abstract
Comprehensive gas chromatography with time of flight mass spectrometry is a powerful tool in the analysis of complex samples. Chemometric analysis of raw chromatographic data is more useful in one- and two-dimensional separations relative to peak tables. The data volume from such experiments generally necessitates the use of data reduction tools. Such tools often sacrifice some of the multivariate information in the mass to charge ratio dimension. The unique ion filter reduces the over-redundancy in two-dimensional gas chromatography-mass spectrometry data by limiting the data to a few unique/pseudo-unique ions, sub-peaks/slices in the first dimension, and spectra in the second dimension. We explore the performance of this algorithm through careful inspection of two-dimensional gas chromatography-mass spectrometry data before and after application of the filter. A reduction (99%) in the number of variables in a two-dimensional gas chromatography-mass spectrometry chromatogram passed on to subsequent analysis was observed. Feature selection times for model optimization reduced from 229 (±13) to 6.8 (±0.5) min when the filter was applied. An estimate of two unique/pseudo-unique ions, one sub-peak in the first dimension and five spectra in the second dimension were considered to provide a true representation of each chromatogram and provided enough information to achieve 100% model prediction accuracy.
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Affiliation(s)
- Lawrence A Adutwum
- Department of Pharmaceutical Chemistry, University of Ghana, Accra, Ghana.,Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Joanna Koryo Kwao
- Department of Pharmaceutical Chemistry, University of Ghana, Accra, Ghana
| | - James J Harynuk
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
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6
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Sudol PE, Ochoa GS, Synovec RE. Investigation of the limit of discovery using tile-based Fisher ratio analysis with comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry. J Chromatogr A 2021; 1644:462092. [PMID: 33823385 DOI: 10.1016/j.chroma.2021.462092] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 11/26/2022]
Abstract
Comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry (GC×GC-TOFMS) is followed by tile-based Fisher ratio (F-ratio) analysis to investigate the "limit of discovery" for low concentration levels of sulfur-containing compounds in JP8 jet fuel. A mixture of 14 sulfur-containing compounds was spiked at 30 ppm, 15 ppm, 3 ppm and 1.5 ppm into the neat fuel prior to GC×GC-TOFMS analysis with a "reversed" column format (aka polar first dimension (1D) and non-polar second dimension (2D) column). Prior standard implementation of tile-based F-ratio analysis utilized an average F-ratio requiring a minimum of 3 mass channels (m/z) with the highest F-ratios. Herein, we explore the notion that use of the top F-ratio m/z for hitlist ranking is superior to the standard implementation for analytes near their limit-of-quantitation (LOQ), defined as an analyte concentration that produces a signal equal to ten times the standard deviation of the baseline noise (10σn). Hitlist ranking comparisons revealed that using only the top F-ratio m/z resulted in impressive improvements in discoverability for the low concentration comparisons. Specifically, for the 3 ppm versus neat hitlist, 1,4-oxathiane (LOQ = 2.5 ppm) improved from hit 114 via standard F-ratio analysis, to hit 25. For the 1.5 ppm versus neat hitlist, 2-propylthiophene (LOQ = 0.64 ppm) improved from hit 59 to 17, benzo[b]thiophene (LOQ = 1.1 ppm) from hit 98 to 28, and 2,5-dimethylthiophene (LOQ = 1.3 ppm) from hit 262 to 39. Additional hitlist ranking comparisons revealed the importance of proper tile size selection, as analyte discoverability deteriorated upon using either an inappropriately too small or too large of a tile.
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Affiliation(s)
- Paige E Sudol
- Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195, USA
| | - Grant S Ochoa
- Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195, USA
| | - Robert E Synovec
- Department of Chemistry, Box 351700, University of Washington, Seattle, WA 98195, USA.
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7
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Improvement in the Prediction of Neonatal Hypoxic-Ischemic Encephalopathy with the Integration of Umbilical Cord Metabolites and Current Clinical Makers. J Pediatr 2021; 229:175-181.e1. [PMID: 33039387 DOI: 10.1016/j.jpeds.2020.09.065] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 09/18/2020] [Accepted: 09/23/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To validate our previously identified candidate metabolites, and to assess the ability of these metabolites to predict hypoxic-ischemic encephalopathy (HIE) both individually and combined with clinical data. STUDY DESIGN Term neonates with signs of perinatal asphyxia, with and without HIE, and matched controls were recruited prospectively at birth from 2 large maternity units. Umbilical cord blood was collected for later batch metabolomic analysis by mass spectroscopy along with clinical details. The optimum selection of clinical and metabolites features with the ability to predict the development of HIE was determined using logistic regression modelling and machine learning techniques. Outcome of HIE was determined by clinical Sarnat grading and confirmed by electroencephalogram grade at 24 hours. RESULTS Fifteen of 27 candidate metabolites showed significant alteration in infants with perinatal asphyxia or HIE when compared with matched controls. Metabolomic data predicted the development of HIE with an area under the curve of 0.67 (95% CI, 0.62-0.71). Lactic acid and alanine were the primary metabolite predictors for the development of HIE, and when combined with clinical data, gave an area under the curve of 0.96 (95% CI, 0.92-0.95). CONCLUSIONS By combining clinical and metabolic data, accurate identification of infants who will develop HIE is possible shortly after birth, allowing early initiation of therapeutic hypothermia.
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Debuf MJ, Carkeek K, Piersigilli F. A Metabolomic Approach in Search of Neurobiomarkers of Perinatal Asphyxia: A Review of the Current Literature. Front Pediatr 2021; 9:674585. [PMID: 34249811 PMCID: PMC8267248 DOI: 10.3389/fped.2021.674585] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 05/24/2021] [Indexed: 11/13/2022] Open
Abstract
Perinatal asphyxia and the possible sequelae of hypoxic-ischemic encephalopathy (HIE), are associated with high morbidity and mortality rates. The use of therapeutic hypothermia (TH) commencing within the first 6 h of life-currently the only treatment validated for the management of HIE-has been proven to reduce the mortality rate and disability seen at follow up at 18 months. Although there have been attempts to identify neurobiomarkers assessing the severity levels in HIE; none have been validated in clinical use to date, and the lack thereof limits the optimal treatment for these vulnerable infants. Metabolomics is a promising field of the "omics technologies" that may: identify neurobiomarkers, help improve diagnosis, identify patients prone to developing HIE, and potentially improve targeted neuroprotection interventions. This review focuses on the current evidence of metabolomics, a novel tool which may prove to be a useful in the diagnosis, management and treatment options for this multifactorial complex disease. Some of the most promising metabolites analyzed are the group of acylcarnitines: Hydroxybutyrylcarnitine (Malonylcarnitine) [C3-DC (C4-OH)], Tetradecanoylcarnitine [C14], L-Palmitoylcarnitine [C16], Hexadecenoylcarnitine [C16:1], Stearoylcarnitine [C18], and Oleoylcarnitine [C18:1]. A metabolomic "fingerprint" or "index," made up of 4 metabolites (succinate × glycerol/(β-hydroxybutyrate × O-phosphocholine)), seems promising in identifying neonates at risk of developing severe HIE.
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Affiliation(s)
- Marie Julie Debuf
- Division of Neonatology, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Bruxelles, Belgium
| | - Katherine Carkeek
- Division of Neonatology, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Bruxelles, Belgium
| | - Fiammetta Piersigilli
- Division of Neonatology, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Bruxelles, Belgium
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Tanaka E, Ogawa Y, Fujii R, Shimonaka T, Sato Y, Hamazaki T, Nagamura-Inoue T, Shintaku H, Tsuji M. Metabolomic analysis and mass spectrometry imaging after neonatal stroke and cell therapies in mouse brains. Sci Rep 2020; 10:21881. [PMID: 33318553 PMCID: PMC7736587 DOI: 10.1038/s41598-020-78930-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/24/2020] [Indexed: 12/14/2022] Open
Abstract
Ischemic brain injury provokes complex, time-dependent downstream pathways that ultimately lead to cell death. We aimed to demonstrate the levels of a wide range of metabolites in brain lysates and their on-tissue distribution following neonatal stroke and cell therapies. Postnatal day 12 mice underwent middle cerebral artery occlusion (MCAO) and were administered 1 × 105 cells after 48 h. Metabolomic analysis of the injured hemisphere demonstrated that a variety of amino acids were significantly increased and that tricarboxylic acid cycle intermediates and some related amino acids, such as glutamate, were decreased. With the exception of the changes in citric acid, neither mesenchymal stem/stromal cells nor CD34+ cells ameliorated these changes. On-tissue visualization with matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-MS) imaging revealed that the signal intensity of glutamate was significantly decreased in the infarct area, consistent with the metabolomic analysis, while its intensity was significantly increased in the peri-infarct area after MCAO. Although cell therapies did not ameliorate the changes in metabolites in the infarct area, mesenchymal stem cells ameliorated the increased levels of glutamate and carnitine in the peri-infarct area. MALDI-MS imaging showed the location-specific effect of cell therapies even in this subacute setting after MCAO. These methodologies may be useful for further investigation of possible treatments for ischemic brain injury.
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Affiliation(s)
- Emi Tanaka
- Department of Pediatrics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yuko Ogawa
- Institute of Biomedical Research and Innovation, Kobe, Japan
| | - Ritsuko Fujii
- Division of Bioenergetics, Research Center for Artificial Photosynthesis, Osaka City University, Osaka, Japan.,Division of Molecular Materials Science, Graduate School of Science, Osaka City University, Osaka, Japan
| | - Tomomi Shimonaka
- Analysis Division, Research Center for Artificial Photosynthesis, Osaka City University, Osaka, Japan
| | - Yoshiaki Sato
- Division of Neonatology, Center for Maternal-Neonatal Care, Nagoya University Hospital, Nagoya, Japan
| | - Takashi Hamazaki
- Department of Pediatrics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Tokiko Nagamura-Inoue
- Department of Cell Processing and Transfusion, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Haruo Shintaku
- Department of Pediatrics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Masahiro Tsuji
- Department of Food and Nutrition, Kyoto Women's University, 35 Kitahiyoshi-cho, Imakumano, Higashiyama-ku, Kyoto, 605-8501, Japan. .,Department of Regenerative Medicine and Tissue Engineering, National Cerebral and Cardiovascular Center, Suita, Japan.
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10
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Trinklein TJ, Schöneich S, Sudol PE, Warren CG, Gough DV, Synovec RE. Total-transfer comprehensive three-dimensional gas chromatography with time-of-flight mass spectrometry. J Chromatogr A 2020; 1634:461654. [DOI: 10.1016/j.chroma.2020.461654] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/19/2020] [Accepted: 10/26/2020] [Indexed: 12/25/2022]
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11
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Prebihalo SE, Ochoa GS, Berrier KL, Skogerboe KJ, Cameron KL, Trump JR, Svoboda SJ, Wickiser JK, Synovec RE. Control-Normalized Fisher Ratio Analysis of Comprehensive Two-Dimensional Gas Chromatography Time-of-Flight Mass Spectrometry Data for Enhanced Biomarker Discovery in a Metabolomic Study of Orthopedic Knee-Ligament Injury. Anal Chem 2020; 92:15526-15533. [PMID: 33171046 DOI: 10.1021/acs.analchem.0c03456] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sarah E. Prebihalo
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195, United States
| | - Grant S. Ochoa
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195, United States
| | - Kelsey L. Berrier
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195, United States
| | - Kristen J. Skogerboe
- Department of Chemistry, Seattle University, Seattle, Washington 98122, United States
| | - Kenneth L. Cameron
- Keller Army Community Hospital, West Point, New York 10996, United States
| | - Jesse R. Trump
- Keller Army Community Hospital, West Point, New York 10996, United States
| | - Steven J. Svoboda
- Keller Army Community Hospital, West Point, New York 10996, United States
| | | | - Robert E. Synovec
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195, United States
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12
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Cain CN, Schöneich S, Synovec RE. Development of an Enhanced Total Ion Current Chromatogram Algorithm to Improve Untargeted Peak Detection. Anal Chem 2020; 92:11365-11373. [DOI: 10.1021/acs.analchem.0c02136] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Caitlin N. Cain
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
| | - Sonia Schöneich
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
| | - Robert E. Synovec
- Department of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
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13
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Exploring Perinatal Asphyxia by Metabolomics. Metabolites 2020; 10:metabo10040141. [PMID: 32260446 PMCID: PMC7240960 DOI: 10.3390/metabo10040141] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/25/2020] [Accepted: 04/02/2020] [Indexed: 02/06/2023] Open
Abstract
Brain damage related to perinatal asphyxia is the second cause of neuro-disability worldwide. Its incidence was estimated in 2010 as 8.5 cases per 1000 live births worldwide, with no further recent improvement even in more industrialized countries. If so, hypoxic-ischemic encephalopathy is still an issue of global health concern. It is thought that a consistent number of cases may be avoided, and its sequelae may be preventable by a prompt and efficient physical and therapeutic treatment. The lack of early, reliable, and specific biomarkers has up to now hampered a more effective use of hypothermia, which represents the only validated therapy for this condition. The urge to unravel the biological modifications underlying perinatal asphyxia and hypoxic-ischemic encephalopathy needs new diagnostic and therapeutic tools. Metabolomics for its own features is a powerful approach that may help for the identification of specific metabolic profiles related to the pathological mechanism and foreseeable outcome. The metabolomic profiles of animal and human infants exposed to perinatal asphyxia or developing hypoxic-ischemic encephalopathy have so far been investigated by means of 1H nuclear magnetic resonance spectroscopy and mass spectrometry coupled with gas or liquid chromatography, leading to the identification of promising metabolomic signatures. In this work, an extensive review of the relevant literature was performed.
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Abstract
Hypoxic Ischemic Encephalopathy (HIE) is one of the most deleterious conditions in the perinatal period and the access to small molecule biomarkers aiding accurate diagnosis and disease staging, progress monitoring, and early outcome prognosis could provide relevant advances towards the development of personalized therapies. The emergence of metabolomics, the "omics" technology enabling the holistic study of small molecules, for biomarker discovery employing different analytical platforms, animal models and study populations has drastically increased the number and diversity of small molecules proposed as candidate biomarkers. However, the use of very few compounds has been implemented in clinical guidelines and authorized medical devices. In this work we review different approaches employed for discovering HIE-related small molecule biomarkers. Their role in associated biochemical disease mechanisms as well as the way towards their translation into the clinical practice are discussed.
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15
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Column selection approach to achieve a high peak capacity in comprehensive three-dimensional gas chromatography. Talanta 2019; 195:822-829. [DOI: 10.1016/j.talanta.2018.12.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/03/2018] [Accepted: 12/04/2018] [Indexed: 11/15/2022]
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16
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Murray DM. Biomarkers in neonatal hypoxic-ischemic encephalopathy-Review of the literature to date and future directions for research. HANDBOOK OF CLINICAL NEUROLOGY 2019; 162:281-293. [PMID: 31324315 DOI: 10.1016/b978-0-444-64029-1.00013-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The widespread introduction of therapeutic hypothermia as a standard of care in hypoxic-ischemic encephalopathy (HIE) has brought increasing pressure on clinicians to make an early and accurate assessment of the degree of hypoxic injury (HI) that has occurred and the severity of the encephalopathy that will ensue. No single blood-based marker is currently robust enough to detect significant HI or predict outcome. However, research in the field has been active in the last 10 years and we know that HIE is associated with predictable alterations in the expression of a number of inflammatory proteins, neuron-specific proteins, metabolite pathways, and microRNA. These alterations evolve quickly over the first hours and days of life. Predictive power varies depending on the timing of measurement of the biomarker, the sample type, and the case mix of the cohort examined. Combining clinical data with biochemical measurements is currently the most likely path toward improved detection and prediction of outcome in neonatal HIE.
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Affiliation(s)
- Deirdre M Murray
- Department of Paediatrics and Child Health, University College Cork, Cork, Ireland.
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17
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Sarafidis K, Begou O, Deda O, Gika H, Agakidis C, Efstathiou N, Theodoridis G. Targeted urine metabolomics in preterm neonates with intraventricular hemorrhage. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1104:240-248. [PMID: 30530117 DOI: 10.1016/j.jchromb.2018.11.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 11/11/2018] [Accepted: 11/20/2018] [Indexed: 01/21/2023]
Abstract
Intraventricular hemorrhage (IVH) is a major cause of morbidity and mortality in preterm neonates. Elucidation of the mechanisms underlying IVH and/or development of disease biomarkers is essential. The aim of the study was to investigate the urine metabolic profile of preterm neonates (gestational age < 32 weeks) IVH and explore the role of metabolomics in understanding pathophysiological mechanisms of the disease from which novel biomarkers could be derived. In this single-center, prospective, case-control study, urine samples were collected from seven preterm infants with early IVH (IVH group) and from 11 preterm ones without IVH (control group) on days 1, 3 and 9 of life. Urine metabolites were evaluated using targeted liquid chromatography-tandem mass spectrometry. Demographic and perinatal-clinical characteristics were recorded. Univariate and multivariate statistical analyses were performed. Orthogonal Partial Least Squares-Discriminant Analysis showed that the study groups differed significantly due to alternation in 20 out of the 40 metabolites detected in the urine. Elevated differentiated metabolites included energy intermediates and other important compounds, whereas reduced ones various amino acids, hypoxanthine and nicotinamide. A set of metabolites showed high performance as indicators of IVH, especially during day 1. As evidenced by metabolomics, preterm neonates with IVH demonstrate significant metabolism perturbations. Potentially, a selected panel of metabolites could be used as urine biomarkers of IVH development and/or progression in high-risk preterm infants.
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Affiliation(s)
- K Sarafidis
- 1(st) Department of Neonatology, School of Medicine, Aristotle University of Thessaloniki, Hippokrateion General Hospital, Kostantinoupoleos 49, 54642 Thessaloniki, Greece.
| | - O Begou
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece
| | - O Deda
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece
| | - H Gika
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece
| | - C Agakidis
- 1(st) Department of Neonatology, School of Medicine, Aristotle University of Thessaloniki, Hippokrateion General Hospital, Kostantinoupoleos 49, 54642 Thessaloniki, Greece
| | - N Efstathiou
- 1(st) Department of Neonatology, School of Medicine, Aristotle University of Thessaloniki, Hippokrateion General Hospital, Kostantinoupoleos 49, 54642 Thessaloniki, Greece
| | - G Theodoridis
- Laboratory of Analytical Chemistry, School of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece
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18
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Navarro-Reig M, Bedia C, Tauler R, Jaumot J. Chemometric Strategies for Peak Detection and Profiling from Multidimensional Chromatography. Proteomics 2018; 18:e1700327. [DOI: 10.1002/pmic.201700327] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 03/16/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Meritxell Navarro-Reig
- Department of Environmental Chemistry; Institute of Environmental Assessment and Water Research (IDAEA) - Spanish National Research Council (CSIC); Jordi Girona 18-34, E08034 Barcelona Spain
| | - Carmen Bedia
- Department of Environmental Chemistry; Institute of Environmental Assessment and Water Research (IDAEA) - Spanish National Research Council (CSIC); Jordi Girona 18-34, E08034 Barcelona Spain
| | - Romà Tauler
- Department of Environmental Chemistry; Institute of Environmental Assessment and Water Research (IDAEA) - Spanish National Research Council (CSIC); Jordi Girona 18-34, E08034 Barcelona Spain
| | - Joaquim Jaumot
- Department of Environmental Chemistry; Institute of Environmental Assessment and Water Research (IDAEA) - Spanish National Research Council (CSIC); Jordi Girona 18-34, E08034 Barcelona Spain
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19
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Locci E, Noto A, Puddu M, Pomero G, Demontis R, Dalmazzo C, Delogu A, Fanos V, d’Aloja E, Gancia P. A longitudinal 1H-NMR metabolomics analysis of urine from newborns with hypoxic-ischemic encephalopathy undergoing hypothermia therapy. Clinical and medical legal insights. PLoS One 2018; 13:e0194267. [PMID: 29668681 PMCID: PMC5906012 DOI: 10.1371/journal.pone.0194267] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 02/28/2018] [Indexed: 01/21/2023] Open
Abstract
Perinatal asphyxia is an event affecting around four million newborns worldwide. The 0.5 to 2 per 1000 of full term asphyxiated newborns suffer from hypoxic-ischemic encephalopathy (HIE), which is a frequent cause of death or severe disability and, as consequence, the most common birth injury claim for obstetrics, gynaecologists, and paediatricians. Perinatal asphyxia results from a compromised gas exchange that leads to hypoxemia, hypercapnia, and metabolic acidosis. In this work, we applied a metabolomics approach to investigate the metabolic profiles of urine samples collected from full term asphyxiated newborns with HIE undergoing therapeutic hypothermia (TH), with the aim of identifying a pattern of metabolites associated with HIE and to follow their modifications over time. Urine samples were collected from 10 HIE newborns at birth, during hypothermia (48 hours), at the end of the therapeutic treatment (72 hours), at 1 month of life, and compared with a matched control population of 16 healthy full term newborns. The metabolic profiles were investigated by 1H NMR spectroscopy coupled with multivariate statistical methods such as principal component analysis and orthogonal partial least square discriminant analysis. Multivariate analysis indicated significant differences between the urine samples of HIE and healthy newborns at birth. The altered metabolic patterns, mainly originated from the depletion of cellular energy and homeostasis, seem to constitute a characteristic of perinatal asphyxia. The HIE urine metabolome changes over time reflected either the effects of TH and the physiological growth of the newborns. Of interest, the urine metabolic profiles of the HIE non-surviving babies, characterized by the increased excretion of lactate, resulted significantly different from the rest of HIE population.
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Affiliation(s)
- Emanuela Locci
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Antonio Noto
- Department of Surgical Sciences, University of Cagliari, and Neonatal Intensive Care Unit, Puericulture Institute and Neonatal Section, Azienda Ospedaliera Universitaria, Cagliari, Italy
| | - Melania Puddu
- Department of Surgical Sciences, University of Cagliari, and Neonatal Intensive Care Unit, Puericulture Institute and Neonatal Section, Azienda Ospedaliera Universitaria, Cagliari, Italy
| | - Giulia Pomero
- Neonatal Intensive Care, Neonatology, ASO S. Croce e Carle, Cuneo, Italy
| | - Roberto Demontis
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Cristina Dalmazzo
- Neonatal Intensive Care, Neonatology, ASO S. Croce e Carle, Cuneo, Italy
| | - Antonio Delogu
- Neonatal Intensive Care, Neonatology, ASO S. Croce e Carle, Cuneo, Italy
| | - Vassilios Fanos
- Department of Surgical Sciences, University of Cagliari, and Neonatal Intensive Care Unit, Puericulture Institute and Neonatal Section, Azienda Ospedaliera Universitaria, Cagliari, Italy
| | - Ernesto d’Aloja
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy
| | - Paolo Gancia
- Neonatal Intensive Care, Neonatology, ASO S. Croce e Carle, Cuneo, Italy
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20
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Knobel Z, Ueland M, Nizio KD, Patel D, Forbes SL. A comparison of human and pig decomposition rates and odour profiles in an Australian environment. AUST J FORENSIC SCI 2018. [DOI: 10.1080/00450618.2018.1439100] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Zaccariah Knobel
- Centre for Forensic Science, University of Technology Sydney, Broadway, Australia
| | - Maiken Ueland
- Centre for Forensic Science, University of Technology Sydney, Broadway, Australia
| | - Katie D. Nizio
- Centre for Forensic Science, University of Technology Sydney, Broadway, Australia
| | - Darshil Patel
- Centre for Forensic Science, University of Technology Sydney, Broadway, Australia
| | - Shari L. Forbes
- Centre for Forensic Science, University of Technology Sydney, Broadway, Australia
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21
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Zushi Y, Hashimoto S. Direct Classification of GC × GC-Analyzed Complex Mixtures Using Non-Negative Matrix Factorization-Based Feature Extraction. Anal Chem 2018; 90:3819-3825. [DOI: 10.1021/acs.analchem.7b04313] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Yasuyuki Zushi
- Research Institute of Science for Safety and Sustainability, National Institute of Advanced Industrial Science and Technology, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
- Center for Environmental Measurement and Analysis, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Shunji Hashimoto
- Center for Environmental Measurement and Analysis, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
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22
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Strączyński G, Ligor T. Comprehensive Gas Chromatography: Food and Metabolomocs Applications. Crit Rev Anal Chem 2018; 48:176-185. [DOI: 10.1080/10408347.2017.1390426] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Tomasz Ligor
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina, Toruń, Poland
- Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wileńska, Toruń, Poland
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23
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Parikh P, Juul SE. Neuroprotective Strategies in Neonatal Brain Injury. J Pediatr 2018; 192:22-32. [PMID: 29031859 DOI: 10.1016/j.jpeds.2017.08.031] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 06/26/2017] [Accepted: 08/15/2017] [Indexed: 01/11/2023]
Affiliation(s)
- Pratik Parikh
- Department of Pediatrics, Division of Neonatology, University of Washington, Seattle, WA
| | - Sandra E Juul
- Department of Pediatrics, Division of Neonatology, University of Washington, Seattle, WA.
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24
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Bajnok A, Berta L, Orbán C, Veres G, Zádori D, Barta H, Méder Ü, Vécsei L, Tulassay T, Szabó M, Toldi G. Distinct cytokine patterns may regulate the severity of neonatal asphyxia-an observational study. J Neuroinflammation 2017; 14:244. [PMID: 29233180 PMCID: PMC5727967 DOI: 10.1186/s12974-017-1023-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 12/05/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Neuroinflammation and a systemic inflammatory reaction are important features of perinatal asphyxia. Neuroinflammation may have dual aspects being a hindrance, but also a significant help in the recovery of the CNS. We aimed to assess intracellular cytokine levels of T-lymphocytes and plasma cytokine levels in moderate and severe asphyxia in order to identify players of the inflammatory response that may influence patient outcome. METHODS We analyzed the data of 28 term neonates requiring moderate systemic hypothermia in a single-center observational study. Blood samples were collected between 3 and 6 h of life, at 24 h, 72 h, 1 week, and 1 month of life. Neonates were divided into a moderate (n = 17) and a severe (n = 11) group based on neuroradiological and amplitude-integrated EEG characteristics. Peripheral blood mononuclear cells were assessed with flow cytometry. Cytokine plasma levels were measured using Bioplex immunoassays. Components of the kynurenine pathway were assessed by high-performance liquid chromatography. RESULTS The prevalence and extravasation of IL-1b + CD4 cells were higher in severe than in moderate asphyxia at 6 h. Based on Receiver operator curve analysis, the assessment of the prevalence of CD4+ IL-1β+ and CD4+ IL-1β+ CD49d+ cells at 6 h appears to be able to predict the severity of the insult at an early stage in asphyxia. Intracellular levels of TNF-α in CD4 cells were increased at all time points compared to 6 h in both groups. At 1 month, intracellular levels of TNF-α were higher in the severe group. Plasma IL-6 levels were higher at 1 week in the severe group and decreased by 1 month in the moderate group. Intracellular levels of IL-6 peaked at 24 h in both groups. Intracellular TGF-β levels were increased from 24 h onwards in the moderate group. CONCLUSIONS IL-1β and IL-6 appear to play a key role in the early events of the inflammatory response, while TNF-α seems to be responsible for prolonged neuroinflammation, potentially contributing to a worse outcome. The assessment of the prevalence of CD4+ IL-1β+ and CD4+ IL-1β+ CD49d+ cells at 6 h appears to be able to predict the severity of the insult at an early stage in asphyxia.
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Affiliation(s)
- Anna Bajnok
- First Department of Obstetrics and Gynecology, Semmelweis University, Baross str. 27, Budapest, H-1088, Hungary.,First Department of Pediatrics, Semmelweis University, Bókay János str. 53-54, Budapest, H-1083, Hungary
| | - László Berta
- First Department of Pediatrics, Semmelweis University, Bókay János str. 53-54, Budapest, H-1083, Hungary
| | - Csaba Orbán
- First Department of Pediatrics, Semmelweis University, Bókay János str. 53-54, Budapest, H-1083, Hungary
| | - Gábor Veres
- Department of Neurology, Albert Szent-Györgyi Clinical Centre, Faculty of Medicine, University of Szeged, Semmelweis str. 6, 5th floor, Szeged, H-6725, Hungary.,MTA-SZTE Neuroscience Research Group, Szeged, Hungary
| | - Dénes Zádori
- Department of Neurology, Albert Szent-Györgyi Clinical Centre, Faculty of Medicine, University of Szeged, Semmelweis str. 6, 5th floor, Szeged, H-6725, Hungary
| | - Hajnalka Barta
- First Department of Pediatrics, Semmelweis University, Bókay János str. 53-54, Budapest, H-1083, Hungary
| | - Ünőke Méder
- First Department of Pediatrics, Semmelweis University, Bókay János str. 53-54, Budapest, H-1083, Hungary
| | - László Vécsei
- Department of Neurology, Albert Szent-Györgyi Clinical Centre, Faculty of Medicine, University of Szeged, Semmelweis str. 6, 5th floor, Szeged, H-6725, Hungary.,MTA-SZTE Neuroscience Research Group, Szeged, Hungary
| | - Tivadar Tulassay
- First Department of Pediatrics, Semmelweis University, Bókay János str. 53-54, Budapest, H-1083, Hungary.,MTA-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
| | - Miklós Szabó
- First Department of Pediatrics, Semmelweis University, Bókay János str. 53-54, Budapest, H-1083, Hungary.,MTA-SE Pediatrics and Nephrology Research Group, Budapest, Hungary
| | - Gergely Toldi
- First Department of Obstetrics and Gynecology, Semmelweis University, Baross str. 27, Budapest, H-1088, Hungary. .,First Department of Pediatrics, Semmelweis University, Bókay János str. 53-54, Budapest, H-1083, Hungary. .,Birmingham Women's and Children's Hospital, Neonatal Unit, Birmingham, UK.
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25
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Sánchez-Illana Á, Núñez-Ramiro A, Cernada M, Parra-Llorca A, Valverde E, Blanco D, Moral-Pumarega MT, Cabañas F, Boix H, Pavon A, Chaffanel M, Benavente-Fernández I, Tofe I, Loureiro B, Fernández-Lorenzo JR, Fernández-Colomer B, García-Robles A, Kuligowski J, Vento M. Evolution of Energy Related Metabolites in Plasma from Newborns with Hypoxic-Ischemic Encephalopathy during Hypothermia Treatment. Sci Rep 2017; 7:17039. [PMID: 29213095 PMCID: PMC5719006 DOI: 10.1038/s41598-017-17202-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 11/22/2017] [Indexed: 12/17/2022] Open
Abstract
Therapeutic hypothermia (TH) initiated within 6 h from birth is the most effective therapeutic approach for moderate to severe hypoxic-ischemic encephalopathy (HIE). However, underlying mechanisms and effects on the human metabolism are not yet fully understood. This work aims at studying the evolution of several energy related key metabolites in newborns with HIE undergoing TH employing gas chromatography - mass spectrometry. The method was validated following stringent FDA requirements and applied to 194 samples from a subgroup of newborns with HIE (N = 61) enrolled in a multicenter clinical trial (HYPOTOP) for the determination of lactate, pyruvate, ketone bodies and several Krebs cycle metabolites at different sampling time points. The analysis of plasma samples from newborns with HIE revealed a decrease of lactate, pyruvate and β-hydroxybutyrate concentrations, whereas rising malate concentrations were observed. In healthy control newborns (N = 19) significantly lower levels of pyruvate and lactate were found in comparison to age-matched newborns with HIE undergoing TH, whereas acetoacetate and β-hydroxybutyrate levels were clearly increased. Access to a validated analytical method and a controlled cohort of newborns with HIE undergoing hypothermia treatment for the first time allowed the in-depth study of the evolution of key metabolites of metabolic junctions in this special population.
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Affiliation(s)
- Ángel Sánchez-Illana
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Antonio Núñez-Ramiro
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - María Cernada
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Anna Parra-Llorca
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Eva Valverde
- Hospital Universitario La Paz, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - Dorotea Blanco
- Hospital Universitario Gregorio Marañón, C/O'Donnell 48-50, 28009, Madrid, Spain
| | | | - Fernando Cabañas
- Hospital Universitario Quirónsalud Madrid, Calle Diego de Velazquez s/n, 28223, Madrid, Spain
| | - Hector Boix
- Hospital Universitario Vall d'Hebron, Passeig Vall d'Hebron 119-129, 08035, Barcelona, Spain
| | - Antonio Pavon
- Hospital Universitario Virgen del Rocío, Avda. Manuel Siurot, s/n, 41013, Sevilla, Spain
| | - Mercedes Chaffanel
- Hospital Materno Infantil Carlos Haya, Avda. Arroyo de los Angeles s/n, 29011, Málaga, Spain
| | | | - Inés Tofe
- Hospital Universitario Reina Sofía, Avda. Menendez Pidal s/n, 14004, Córdoba, Spain
| | - Begoña Loureiro
- Hospital Universitario Cruces, Plaza Cruces s/n, 48903, Barakaldo, Vizcaya, Spain
| | | | | | - Ana García-Robles
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain
| | - Julia Kuligowski
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain.
| | - Máximo Vento
- Neonatal Research Unit, Health Research Institute La Fe, Valencia, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain.
- Division of Neonatology, University & Polytechnic Hospital La Fe, Avda. Fernando Abril Martorell 106, 46026, Valencia, Spain.
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26
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Oliynyk AO, Adutwum LA, Rudyk BW, Pisavadia H, Lotfi S, Hlukhyy V, Harynuk JJ, Mar A, Brgoch J. Disentangling Structural Confusion through Machine Learning: Structure Prediction and Polymorphism of Equiatomic Ternary Phases ABC. J Am Chem Soc 2017; 139:17870-17881. [DOI: 10.1021/jacs.7b08460] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anton O. Oliynyk
- Department
of Chemistry, University of Houston, Houston, Texas 77204, United States
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Lawrence A. Adutwum
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Brent W. Rudyk
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Harshil Pisavadia
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Sogol Lotfi
- Department
of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Viktor Hlukhyy
- Department
of Chemistry, Technische Universität München, Garching 85747, Germany
| | - James J. Harynuk
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Arthur Mar
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Jakoah Brgoch
- Department
of Chemistry, University of Houston, Houston, Texas 77204, United States
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27
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The analysis of textiles associated with decomposing remains as a natural training aid for cadaver-detection dogs. Forensic Chem 2017. [DOI: 10.1016/j.forc.2017.06.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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28
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Hurtado C, Parastar H, Matamoros V, Piña B, Tauler R, Bayona JM. Linking the morphological and metabolomic response of Lactuca sativa L exposed to emerging contaminants using GC × GC-MS and chemometric tools. Sci Rep 2017; 7:6546. [PMID: 28747703 PMCID: PMC5529569 DOI: 10.1038/s41598-017-06773-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 06/16/2017] [Indexed: 02/05/2023] Open
Abstract
The occurrence of contaminants of emerging concern (CECs) in irrigation waters (up to low μg L-1) and irrigated crops (ng g-1 in dry weight) has been reported, but the linkage between plant morphological changes and plant metabolomic response has not yet been addressed. In this study, a non-targeted metabolomic analysis was performed on lettuce (Lactuca sativa L) exposed to 11 CECs (pharmaceuticals, personal care products, anticorrosive agents and surfactants) by irrigation. The plants were watered with different CEC concentrations (0-50 µg L-1) for 34 days under controlled conditions and then harvested, extracted, derivatised and analysed by comprehensive two-dimensional gas chromatography coupled to a time-of-flight mass spectrometer (GC × GC-TOFMS). The resulting raw data were analysed using multivariate curve resolution (MCR) and partial least squares (PLS) methods. The metabolic response indicates that exposure to CECs at environmentally relevant concentrations (0.05 µg L-1) can cause significant metabolic alterations in plants (carbohydrate metabolism, the citric acid cycle, pentose phosphate pathway and glutathione pathway) linked to changes in morphological parameters (leaf height, stem width) and chlorophyll content.
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Affiliation(s)
- Carlos Hurtado
- Department of Environmental Chemistry, IDAEA-CSIC, c/Jordi Girona, 18-26, E-08034, Barcelona, Spain
| | - Hadi Parastar
- Department of Chemistry, Sharif University of Technology, Tehran, Iran
| | - Víctor Matamoros
- Department of Environmental Chemistry, IDAEA-CSIC, c/Jordi Girona, 18-26, E-08034, Barcelona, Spain
| | - Benjamín Piña
- Department of Environmental Chemistry, IDAEA-CSIC, c/Jordi Girona, 18-26, E-08034, Barcelona, Spain
| | - Romà Tauler
- Department of Environmental Chemistry, IDAEA-CSIC, c/Jordi Girona, 18-26, E-08034, Barcelona, Spain
| | - Josep M Bayona
- Department of Environmental Chemistry, IDAEA-CSIC, c/Jordi Girona, 18-26, E-08034, Barcelona, Spain.
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29
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Shahbazy M, Vasighi M, Kompany-Zareh M, Ballabio D. Oblique rotation of factors: a novel pattern recognition strategy to classify fluorescence excitation-emission matrices of human blood plasma for early diagnosis of colorectal cancer. MOLECULAR BIOSYSTEMS 2017; 12:1963-75. [PMID: 27076033 DOI: 10.1039/c6mb00162a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Colorectal cancer (CRC) ranks high in both men and women, accounting for about 13% of all cancers. In this study, a novel pattern recognition strategy is proposed to improve early diagnosis of CRC through visualizing the relationship between different spectral patterns in a case-control research. Partial least squares-discriminant analysis (PLS-DA) and supervised Kohonen network (SKN) were used to classify the fluorescence excitation-emission matrices (EEMs) from 289 human blood plasma samples containing CRC patients, adenomas tumor, other non-malignant findings and healthy individuals. To obtain optimal factors, oblique rotation (OR) and genetic algorithm (GA) were used to rotate the factors by optimizing transformation matrix elements. Transformed factors were introduced to SKN to build a classification model and the model performance was examined via comparison with a common classifier; PLS-DA. Classification models were built for CRC-healthy and adenomas-healthy samples and the best results were obtained through applying GA-OR on PLS factors and introducing them to the classifiers. Non-error rates for SKN and PLS-DA models assisted with GA (for selecting more informative PLS factors) and OR were equal to 0.97 and 0.95 in cross validation and 0.93 and 0.90 for prediction of the external test set, respectively. Moreover, according to the acceptable results for adenomas-healthy cases using optimal factors, CRC can be diagnosed in early stages. Combining classifiers and optimal factors proved to be efficient for distinguishing healthy and malignant samples, and OR can significantly improve performance of the classification model.
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Affiliation(s)
- Mohammad Shahbazy
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), 45137-66731 Zanjan, Iran.
| | - Mahdi Vasighi
- Department of Computer Science and Information Technology, Institute for Advanced Studies in Basic Sciences (IASBS), 45137-66731 Zanjan, Iran.
| | - Mohsen Kompany-Zareh
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), 45137-66731 Zanjan, Iran.
| | - Davide Ballabio
- Milano Chemometrics and QSAR Research Group, Department of Earth and Environmental Sciences, University of Milano-Bicocca, P.za della Scienza 1, 20126 Milan, Italy
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Efstathiou N, Theodoridis G, Sarafidis K. Understanding neonatal hypoxic-ischemic encephalopathy with metabolomics. Hippokratia 2017; 21:115-123. [PMID: 30479472 PMCID: PMC6248003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
BACKGROUND Hypoxic-ischemic encephalopathy (HIE), a serious complication of perinatal asphyxia, is commonly associated with an unfavorable outcome. In-depth research is important not only for the interpretation of the underlying biological alternations but may also provide the basis for the development of novel diagnostic and therapeutic tools. The application of metabolomics in perinatal asphyxia/HIE is a relatively new approach. METHODS We performed a narrative, non-systematic review in the literature of metabolomic studies involving newborn animals and humans exposed to hypoxia-ischemia or developing perinatal asphyxia/HIE. RESULTS Fifteen animal studies, nine studies in human neonates, and two review articles were evaluated. Changes in the metabolomic profile of newborn animals exposed to hypoxia-ischemia and of asphyxiated neonates with HIE are presented in relation to the underlying pathophysiology. The clinical relevance of these findings is further discussed in a comprehensible to the bedside clinician manner. CONCLUSIONS Metabolomics may provide an explanation for the various metabolic alternations occurring in perinatal asphyxia/HIE, elucidate the biological background of the applied therapeutic interventions and promote the development of novel diagnostic-prognostic biomarkers of the disease. HIPPOKRATIA 2017, 21(3): 115-123.
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Affiliation(s)
- N Efstathiou
- 1 Department of Neonatology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - G Theodoridis
- School of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - K Sarafidis
- 1 Department of Neonatology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Samanipour S, Reid MJ, Thomas KV. Statistical Variable Selection: An Alternative Prioritization Strategy during the Nontarget Analysis of LC-HR-MS Data. Anal Chem 2017; 89:5585-5591. [DOI: 10.1021/acs.analchem.7b00743] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Saer Samanipour
- Norwegian Institute for Water Research (NIVA), 0349 Oslo, Norway
| | - Malcolm J. Reid
- Norwegian Institute for Water Research (NIVA), 0349 Oslo, Norway
| | - Kevin V. Thomas
- Norwegian Institute for Water Research (NIVA), 0349 Oslo, Norway
- Queensland
Alliance for Environmental
Health Science (QAEHS), University of Queensland, 39 Kessels Road, Coopers Plains, Queensland 4108, Australia
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Sarafidis K, Efstathiou N, Begou O, Soubasi V, Agakidou E, Gika E, Theodoridis G, Drossou V. Urine metabolomic profile in neonates with hypoxic-ischemic encephalopa-thy. Hippokratia 2017; 21:80-84. [PMID: 30455560 PMCID: PMC6239088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
BACKGROUND Metabolomics could provide valuable insights into hypoxemic-ischemic encephalopathy (HIE) revealing new disease-associated biochemical derangements. The study aimed to investigate urine metabolic changes in neonates with HIE compared to healthy controls, using targeted liquid chromatography-tandem mass spectrometry (LC-MS/MS). PATIENTS AND METHODS In this prospective, single-center study we enrolled neonates born at ≥ 36 weeks gestation with HIE (HIE group) and healthy controls (control group). We collected urine samples for metabolomic analysis on days one, three, and nine of life. RESULTS Twenty-one full-term newborns were studied, 13 in the HIE group and eight in the control group. Six of the affected neonates had moderate/severe HIE and seven mild HIE. Therapeutic hypothermia was applied only in four neonates with moderate/severe HIE. Multivariate and univariate statistical analysis showed a clear separation between the HIE and the control groups. Discriminant metabolites involved pyruvic acid, amino acids, acylcarnitines, inositol, kynurenine, hippuric acid, and vitamins. CONCLUSIONS We have identified a specific metabolic profile in neonates with HIE, adding to the existing knowledge on the disease biochemistry that may potentially help in biomarker development. HIPPOKRATIA 2017, 21(2): 80-84.
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Affiliation(s)
- K Sarafidis
- 1 Department of Neonatology, School of Medicine Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - N Efstathiou
- 1 Department of Neonatology, School of Medicine Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - O Begou
- School of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - V Soubasi
- 1 Department of Neonatology, School of Medicine Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - E Agakidou
- 1 Department of Neonatology, School of Medicine Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - E Gika
- Laboratory of Forensic Toxicology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - G Theodoridis
- School of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - V Drossou
- 1 Department of Neonatology, School of Medicine Aristotle University of Thessaloniki, Thessaloniki, Greece
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McAdams RM, McPherson RJ, Kapur RP, Juul SE. Focal Brain Injury Associated with a Model of Severe Hypoxic-Ischemic Encephalopathy in Nonhuman Primates. Dev Neurosci 2017; 39:107-123. [PMID: 28343228 DOI: 10.1159/000456658] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 01/17/2017] [Indexed: 01/08/2023] Open
Abstract
Worldwide, hypoxic-ischemic encephalopathy (HIE) is a major cause of neonatal mortality and morbidity. To better understand the mechanisms contributing to brain injury and improve outcomes in neonates with HIE, better preclinical animal models that mimic the clinical situation following birth asphyxia in term newborns are needed. In an effort to achieve this goal, we modified our nonhuman primate model of HIE induced by in utero umbilical cord occlusion (UCO) to include postnatal hypoxic episodes, in order to simulate apneic events in human neonates with HIE. We describe a cohort of 4 near-term fetal Macaca nemestrina that underwent 18 min of in utero UCO, followed by cesarean section delivery, resuscitation, and subsequent postnatal mechanical ventilation, with exposure to intermittent daily hypoxia (3 min, 8% O2 3-8 times daily for 3 days). After delivery, all animals demonstrated severe metabolic acidosis (pH 7 ± 0.12; mean ± SD) and low APGAR scores (<5 at 10 min of age). Three of 4 animals had both electrographic and clinical seizures. Serial blood samples were collected and plasma metabolites were determined by 2-dimensional gas chromatography coupled with time-of-flight mass spectrometry (GC × GC-TOFMS). The 4 UCO animals and a single nonasphyxiated animal (delivered by cesarean section but without exposure to UCO or prolonged sedation) underwent brain magnetic resonance imaging (MRI) on day 8 of life. Thalamic injury was present on MRI in 3 UCO animals, but not in the control animal. Following necropsy on day 8, brain histopathology revealed neuronal injury/loss and gliosis in portions of the ventrolateral thalamus in all 4 UCO, with 2 animals also demonstrating putamen/globus pallidus involvement. In addition, all 4 UCO animals demonstrated brain stem gliosis, with neuronal loss present in the midbrain, pons, and lateral medulla in 3 of 4 animals. Transmission electron microscopy imaging of the brain tissues was performed, which demonstrated ultrastructural white matter abnormalities, characterized by perinuclear vacuolation and axonal dilation, in 3 of 4 animals. Immunolabeling of Nogo-A, a negative regulator of neuronal growth, was not increased in the injured brains compared to 2 control animals. Using GC × GC-TOFMS, we identified metabolites previously recognized as potential biomarkers of perinatal asphyxia. The basal ganglia-thalamus-brain stem injury produced by UCO is consistent with the deep nuclear/brainstem injury pattern seen in human neonates after severe, abrupt hypoxic-ischemic insults. The UCO model permits timely detection of biomarkers associated with specific patterns of neonatal brain injury, and it may ultimately be useful for validating therapeutic strategies to treat neonatal HIE.
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Affiliation(s)
- Ryan M McAdams
- Division of Neonatology, Department of Pediatrics, University of Washington, Seattle, WA, USA
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Huang L, Zhao F, Qu Y, Zhang L, Wang Y, Mu D. Animal models of hypoxic-ischemic encephalopathy: optimal choices for the best outcomes. Rev Neurosci 2017; 28:31-43. [PMID: 27559689 DOI: 10.1515/revneuro-2016-0022] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 07/15/2016] [Indexed: 12/21/2022]
Abstract
AbstractHypoxic-ischemic encephalopathy (HIE), a serious disease leading to neonatal death, is becoming a key area of pediatric neurological research. Despite remarkable advances in the understanding of HIE, the explicit pathogenesis of HIE is unclear, and well-established treatments are absent. Animal models are usually considered as the first step in the exploration of the underlying disease and in evaluating promising therapeutic interventions. Various animal models of HIE have been developed with distinct characteristics, and it is important to choose an appropriate animal model according to the experimental objectives. Generally, small animal models may be more suitable for exploring the mechanisms of HIE, whereas large animal models are better for translational studies. This review focuses on the features of commonly used HIE animal models with respect to their modeling strategies, merits, and shortcomings, and associated neuropathological changes, providing a comprehensive reference for improving existing animal models and developing new animal models.
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Affiliation(s)
- Lan Huang
- 1Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- 2Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of the Ministry of Education, Sichuan University, Chengdu 610041, China
| | - Fengyan Zhao
- 1Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- 2Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of the Ministry of Education, Sichuan University, Chengdu 610041, China
| | - Yi Qu
- 1Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- 2Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of the Ministry of Education, Sichuan University, Chengdu 610041, China
| | - Li Zhang
- 1Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- 2Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of the Ministry of Education, Sichuan University, Chengdu 610041, China
| | - Yan Wang
- 1Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- 2Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of the Ministry of Education, Sichuan University, Chengdu 610041, China
| | - Dezhi Mu
- 1Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China
- 2Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of the Ministry of Education, Sichuan University, Chengdu 610041, China
- 3Department of Pediatrics, University of California, San Francisco, CA 94143, USA
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Achieving a Near-Theoretical Maximum in Peak Capacity Gain for the Forensic Analysis of Ignitable Liquids Using GC×GC-TOFMS. SEPARATIONS 2016. [DOI: 10.3390/separations3030026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Strozier ED, Mooney DD, Friedenberg DA, Klupinski TP, Triplett CA. Use of Comprehensive Two-Dimensional Gas Chromatography with Time-of-Flight Mass Spectrometric Detection and Random Forest Pattern Recognition Techniques for Classifying Chemical Threat Agents and Detecting Chemical Attribution Signatures. Anal Chem 2016; 88:7068-75. [DOI: 10.1021/acs.analchem.6b00725] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Erich D. Strozier
- Battelle Memorial Institute, 505
King Avenue, Columbus, Ohio 43201, United States
| | - Douglas D. Mooney
- Battelle Memorial Institute, 505
King Avenue, Columbus, Ohio 43201, United States
- Early Moon, LLC, 1391 West
Fifth Avenue, Suite 423, Columbus, Ohio 43212, United States
| | - David A. Friedenberg
- Battelle Memorial Institute, 505
King Avenue, Columbus, Ohio 43201, United States
| | | | - Cheryl A. Triplett
- Battelle Memorial Institute, 505
King Avenue, Columbus, Ohio 43201, United States
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37
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Nizio KD, Perrault KA, Troobnikoff AN, Ueland M, Shoma S, Iredell JR, Middleton PG, Forbes SL. In vitro volatile organic compound profiling using GC×GC-TOFMS to differentiate bacteria associated with lung infections: a proof-of-concept study. J Breath Res 2016; 10:026008. [PMID: 27120170 DOI: 10.1088/1752-7155/10/2/026008] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Chronic pulmonary infections are the principal cause of morbidity and mortality in individuals with cystic fibrosis (CF). Due to the polymicrobial nature of these infections, the identification of the particular bacterial species responsible is an essential step in diagnosis and treatment. Current diagnostic procedures are time-consuming, and can also be expensive, invasive and unpleasant in the absence of spontaneously expectorated sputum. The development of a rapid, non-invasive methodology capable of diagnosing and monitoring early bacterial infection is desired. Future visions of real-time, in situ diagnosis via exhaled breath testing rely on the differentiation of bacteria based on their volatile metabolites. The objective of this proof-of-concept study was to investigate whether a range of CF-associated bacterial species (i.e. Pseudomonas aeruginosa, Burkholderia cenocepacia, Haemophilus influenzae, Stenotrophomonas maltophilia, Streptococcus pneumoniae and Streptococcus milleri) could be differentiated based on their in vitro volatile metabolomic profiles. Headspace samples were collected using solid phase microextraction (SPME), analyzed using comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry (GC×GC-TOFMS) and evaluated using principal component analysis (PCA) in order to assess the multivariate structure of the data. Although it was not possible to effectively differentiate all six bacteria using this method, the results revealed that the presence of a particular pattern of VOCs (rather than a single VOC biomarker) is necessary for bacterial species identification. The particular pattern of VOCs was found to be dependent upon the bacterial growth phase (e.g. logarithmic versus stationary) and sample storage conditions (e.g. short-term versus long-term storage at -18 °C). Future studies of CF-associated bacteria and exhaled breath condensate will benefit from the approaches presented in this study and further facilitate the production of diagnostic tools for the early detection of bacterial lung infections.
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Affiliation(s)
- K D Nizio
- Centre for Forensic Science, University of Technology Sydney, PO Box 123, Broadway, NSW 2007, Australia
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Empie K, Rangarajan V, Juul SE. Is the ferret a suitable species for studying perinatal brain injury? Int J Dev Neurosci 2015; 45:2-10. [PMID: 26102988 PMCID: PMC4793918 DOI: 10.1016/j.ijdevneu.2015.06.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 05/09/2015] [Accepted: 06/01/2015] [Indexed: 11/26/2022] Open
Abstract
Ferret brain architecture, composition, and development are similar to humans. Postnatal ferret brain development is comparable to that of premature infants. Ferrets have potential to model preterm and term neonatal brain injury. Ferrets may fulfill the need for an intermediate model species of neurodevelopment. Many opportunities exist to expand the use of ferrets as research subjects.
Complications of prematurity often disrupt normal brain development and/or cause direct damage to the developing brain, resulting in poor neurodevelopmental outcomes. Physiologically relevant animal models of perinatal brain injury can advance our understanding of these influences and thereby provide opportunities to develop therapies and improve long-term outcomes. While there are advantages to currently available small animal models, there are also significant drawbacks that have limited translation of research findings to humans. Large animal models such as newborn pig, sheep and nonhuman primates have complex brain development more similar to humans, but these animals are expensive, and developmental testing of sheep and piglets is limited. Ferrets (Mustela putorius furo) are born lissencephalic and undergo postnatal cortical folding to form complex gyrencephalic brains. This review examines whether ferrets might provide a novel intermediate animal model of neonatal brain disease that has the benefit of a gyrified, altricial brain in a small animal. It summarizes attributes of ferret brain growth and development that make it an appealing animal in which to model perinatal brain injury. We postulate that because of their innate characteristics, ferrets have great potential in neonatal neurodevelopmental studies.
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Affiliation(s)
- Kristen Empie
- Department of Neonatology, University of Washington, Seattle, USA
| | | | - Sandra E Juul
- Department of Neonatology, University of Washington, Seattle, USA.
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Perinatal asphyxia: a review from a metabolomics perspective. Molecules 2015; 20:7000-16. [PMID: 25898414 PMCID: PMC6272788 DOI: 10.3390/molecules20047000] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 04/01/2015] [Accepted: 04/13/2015] [Indexed: 01/05/2023] Open
Abstract
Perinatal asphyxia is defined as an oxygen deprivation that occurs around the time of birth, and may be caused by several perinatal events. This medical condition affects some four million neonates worldwide per year, causing the death of one million subjects. In most cases, infants successfully recover from hypoxia episodes; however, some patients may develop HIE, leading to permanent neurological conditions or impairment of different organs and systems. Given its multifactor dependency, the timing, severity and outcome of this disease, mainly assessed through Sarnat staging, are of difficult evaluation. Moreover, although the latest newborn resuscitation guideline suggests the use of a 21% oxygen concentration or room air, such an approach is still under debate. Therefore, the pathological mechanism is still not clear and a golden standard treatment has yet to be defined. In this context, metabolomics, a new discipline that has described important perinatal issues over the last years, proved to be a useful tool for the monitoring, the assessment, and the identification of potential biomarkers associated with asphyxia events. This review covers metabolomics research on perinatal asphyxia condition, examining in detail the studies reported both on animal and human models.
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Pinkerton DK, Parsons BA, Anderson TJ, Synovec RE. Trilinearity deviation ratio: A new metric for chemometric analysis of comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry data. Anal Chim Acta 2015; 871:66-76. [DOI: 10.1016/j.aca.2015.02.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Revised: 02/12/2015] [Accepted: 02/13/2015] [Indexed: 12/28/2022]
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Parsons BA, Marney LC, Siegler WC, Hoggard JC, Wright BW, Synovec RE. Tile-Based Fisher Ratio Analysis of Comprehensive Two-Dimensional Gas Chromatography Time-of-Flight Mass Spectrometry (GC × GC–TOFMS) Data Using a Null Distribution Approach. Anal Chem 2015; 87:3812-9. [DOI: 10.1021/ac504472s] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Brendon A. Parsons
- Department
of Chemistry, University of Washington, Box 351700, Seattle, Washington 98198, United States
| | - Luke C. Marney
- Department
of Chemistry, University of Washington, Box 351700, Seattle, Washington 98198, United States
| | - W. Christopher Siegler
- Department
of Chemistry, University of Washington, Box 351700, Seattle, Washington 98198, United States
| | - Jamin C. Hoggard
- Department
of Chemistry, University of Washington, Box 351700, Seattle, Washington 98198, United States
| | - Bob W. Wright
- Pacific Northwest National Laboratory, Battelle Boulevard, P.O. Box 999, Richland, Washington 99352, United States
| | - Robert E. Synovec
- Department
of Chemistry, University of Washington, Box 351700, Seattle, Washington 98198, United States
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Improving the quality of biomarker candidates in untargeted metabolomics via peak table-based alignment of comprehensive two-dimensional gas chromatography-mass spectrometry data. J Chromatogr A 2015; 1394:111-7. [PMID: 25857541 DOI: 10.1016/j.chroma.2015.03.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 02/24/2015] [Accepted: 03/01/2015] [Indexed: 01/07/2023]
Abstract
The potential of high-resolution analytical technologies like GC×GC/TOF MS in untargeted metabolomics and biomarker discovery has been limited by the development of fully automated software that can efficiently align and extract information from multiple chromatographic data sets. In this work we report the first investigation on a peak-by-peak basis of the chromatographic factors that impact GC×GC data alignment. A representative set of 16 compounds of different chromatographic characteristics were followed through the alignment of 63 GC×GC chromatograms. We found that varying the mass spectral match parameter had a significant influence on the alignment for poorly-resolved peaks, especially those at the extremes of the detector linear range, and no influence on well-chromatographed peaks. Therefore, optimized chromatography is required for proper GC×GC data alignment. Based on these observations, a workflow is presented for the conservative selection of biomarker candidates from untargeted metabolomics analyses.
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Chun PT, McPherson RJ, Marney LC, Zangeneh SZ, Parsons BA, Shojaie A, Synovec RE, Juul SE. Serial plasma metabolites following hypoxic-ischemic encephalopathy in a nonhuman primate model. Dev Neurosci 2015; 37:161-71. [PMID: 25765047 DOI: 10.1159/000370147] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 11/25/2014] [Indexed: 12/27/2022] Open
Abstract
Biomarkers that indicate the severity of hypoxic-ischemic brain injury and response to treatment and that predict neurodevelopmental outcomes are urgently needed to improve the care of affected neonates. We hypothesize that sequentially obtained plasma metabolomes will provide indicators of brain injury and repair, allowing for the prediction of neurodevelopmental outcomes. A total of 33 Macaca nemestrina underwent 0, 15 or 18 min of in utero umbilical cord occlusion (UCO) to induce hypoxic-ischemic encephalopathy and were then delivered by hysterotomy, resuscitated and stabilized. Serial blood samples were obtained at baseline (cord blood) and at 0.1, 24, 48, and 72 h of age. Treatment groups included nonasphyxiated controls (n = 7), untreated UCO (n = 11), UCO + hypothermia (HT; n = 6), and UCO + HT + erythropoietin (n = 9). Metabolites were extracted and analyzed using comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry and quantified by PARAFAC (parallel factor analysis). Using nontargeted discovery-based methods, we identified 63 metabolites as potential biomarkers. The changes in metabolite concentrations were characterized and compared between treatment groups. Further comparison determined that 8 metabolites (arachidonic acid, butanoic acid, citric acid, fumaric acid, lactate, malate, propanoic acid, and succinic acid) correlated with early and/or long-term neurodevelopmental outcomes. The combined outcomes of death or cerebral palsy correlated with citric acid, fumaric acid, lactate, and propanoic acid. This change in circulating metabolome after UCO may reflect cellular metabolism and biochemical changes in response to the severity of brain injury and have potential to predict neurodevelopmental outcomes.
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Metabolomic profiling in perinatal asphyxia: a promising new field. BIOMED RESEARCH INTERNATIONAL 2015; 2015:254076. [PMID: 25802843 PMCID: PMC4329862 DOI: 10.1155/2015/254076] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 01/07/2015] [Accepted: 01/08/2015] [Indexed: 12/15/2022]
Abstract
Metabolomics, the latest “omic” technology, is defined as the comprehensive study of all low molecular weight biochemicals, “metabolites” present in an organism. As a systems biology approach, metabolomics has huge potential to progress our understanding of perinatal asphyxia and neonatal hypoxic-ischaemic encephalopathy, by uniquely detecting rapid biochemical pathway alterations in response to the hypoxic environment. The study of metabolomic biomarkers in the immediate neonatal period is not a trivial task and requires a number of specific considerations, unique to this disease and population. Recruiting a clearly defined cohort requires standardised multicentre recruitment with broad inclusion criteria and the participation of a range of multidisciplinary staff. Minimally invasive biospecimen collection is a priority for biomarker discovery. Umbilical cord blood presents an ideal medium as large volumes can be easily extracted and stored and the sample is not confounded by postnatal disease progression. Pristine biobanking and phenotyping are essential to ensure the validity of metabolomic findings. This paper provides an overview of the current state of the art in the field of metabolomics in perinatal asphyxia and neonatal hypoxic-ischaemic encephalopathy. We detail the considerations required to ensure high quality sampling and analysis, to support scientific progression in this important field.
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45
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Shahbazy M, Zahraei A, Vafaeimanesh J, Kompany-Zareh M. Rapid and non-invasive diagnosis of coronary artery disease via clinical laboratory parameters and1H-NMR spectra of human blood plasma. RSC Adv 2015. [DOI: 10.1039/c5ra17262d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Coronary artery disease (CAD), one of the most common fatal diseases in the world, was examinedviainvestigation of the1H-NMR spectra of human blood plasma and clinical laboratory parameters with the aim of early disease diagnosis.
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Affiliation(s)
- Mohammad Shahbazy
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan 45137-66731
- Iran
| | - Ali Zahraei
- Clinical Research Development Center
- Qom University of Medical Sciences
- Qom
- Iran
| | | | - Mohsen Kompany-Zareh
- Department of Chemistry
- Institute for Advanced Studies in Basic Sciences (IASBS)
- Zanjan 45137-66731
- Iran
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Brokl M, Bishop L, Wright CG, Liu C, McAdam K, Focant JF. Multivariate analysis of mainstream tobacco smoke particulate phase by headspace solid-phase micro extraction coupled with comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry. J Chromatogr A 2014; 1370:216-29. [PMID: 25454146 DOI: 10.1016/j.chroma.2014.10.057] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 10/16/2014] [Accepted: 10/18/2014] [Indexed: 11/24/2022]
Abstract
A method involving headspace solid-phase microextraction (HS-SPME) and comprehensive two-dimensional gas chromatography (GC×GC) coupled to time-of-flight mass spectrometry (TOFMS) was developed and applied to evaluate profiles of volatile compounds present in mainstream tobacco smoke particulate matter trapped on glass fiber filters. Six SPME fibers were tested for the extraction capacities toward selected compounds, showing the best results for the polyacrylate fiber. The optimization of the extraction conditions was carried out using multivariate response surface methodology. Two cigarette types differing in a filter design were analyzed using optimized conditions. A template was built in order to generate comprehensive chemical information, which conceded obtaining consistent information across 24 chromatograms. Principal component analysis (PCA) allowed a clear differentiation of the studied cigarette types. Fisher ratio analysis allowed identification of compounds responsible for the chemical differences between the cigarette samples. Of the selected 143 most important ones, 134 analytes were reduced by the active carbon filter, while for nine, classical cellulose acetate filter was more efficient.
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Affiliation(s)
- Michał Brokl
- CART - Chemistry Department, Organic & Biological Analytical Chemistry, University of Liège, Liège, Belgium
| | - Louise Bishop
- Group Research and Development, British American Tobacco, Regents Park Road, Southampton SO15 8TL, UK
| | - Christopher G Wright
- Group Research and Development, British American Tobacco, Regents Park Road, Southampton SO15 8TL, UK
| | - Chuan Liu
- Group Research and Development, British American Tobacco, Regents Park Road, Southampton SO15 8TL, UK
| | - Kevin McAdam
- Group Research and Development, British American Tobacco, Regents Park Road, Southampton SO15 8TL, UK
| | - Jean-François Focant
- CART - Chemistry Department, Organic & Biological Analytical Chemistry, University of Liège, Liège, Belgium.
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Abstract
Over the past two decades, host-response biomarkers have been extensively used by clinicians for a better understanding of normal biological processes, the complexity and severity of illnesses, or pharmacological responses to therapeutic intervention. A myriad of information can be drawn from the gender, age, dietary intake and the disease history of an individual. These biomarkers may be promising for the complete phenotyping of a cell, tissue or an organism. In neonatology, these molecular markers may help in prediction of disease severity and its outcome, thus allowing personalized interventions. In this Review, existing data in the literature on metabolites in plasma, urine and maternal milk that may offer a unique insight into the host's dynamic behavior in different neonatal conditions will be examined.
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Adutwum LA, Harynuk JJ. Unique Ion Filter: A Data Reduction Tool for GC/MS Data Preprocessing Prior to Chemometric Analysis. Anal Chem 2014; 86:7726-33. [DOI: 10.1021/ac501660a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- L. A. Adutwum
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - J. J. Harynuk
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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Potential of metabolomics in preclinical and clinical drug development. Pharmacol Rep 2014; 66:956-63. [PMID: 25443721 DOI: 10.1016/j.pharep.2014.06.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 06/03/2014] [Accepted: 06/10/2014] [Indexed: 12/29/2022]
Abstract
Metabolomics is an upcoming technology system which involves detailed experimental analysis of metabolic profiles. Due to its diverse applications in preclinical and clinical research, it became an useful tool for the drug discovery and drug development process. This review covers the brief outline about the instrumentation and interpretation of metabolic profiles. The applications of metabolomics have a considerable scope in the pharmaceutical industry, almost at each step from drug discovery to clinical development. These include finding drug target, potential safety and efficacy biomarkers and mechanisms of drug action, the validation of preclinical experimental models against human disease profiles, and the discovery of clinical safety and efficacy biomarkers. As we all know, nowadays the drug discovery and development process is a very expensive, and risky business. Failures at any stage of drug discovery and development process cost millions of dollars to the companies. Some of these failures or the associated risks could be prevented or minimized if there were better ways of drug screening, drug toxicity profiling and monitoring adverse drug reactions. Metabolomics potentially offers an effective route to address all the issues associated with the drug discovery and development.
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Metabolomics network characterization of resuscitation after normocapnic hypoxia in a newborn piglet model supports the hypothesis that room air is better. BIOMED RESEARCH INTERNATIONAL 2014; 2014:731620. [PMID: 24696864 PMCID: PMC3947697 DOI: 10.1155/2014/731620] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 01/05/2014] [Indexed: 01/08/2023]
Abstract
Perinatal asphyxia is attributed to hypoxia and/or ischemia around the time of birth and may lead to multiorgan dysfunction. Aim of this research article is to investigate whether different metabolomic profiles occurred according to oxygen concentration administered at resuscitation. In order to perform the experiment, forty newborn piglets were subjected to normocapnic hypoxia and reoxygenation and were randomly allocated in 4 groups resuscitated with different oxygen concentrations, 18%, 21%, 40%, and 100%, respectively. Urine metabolic profiles at baseline and at hypoxia were analysed by 1H-NMR spectroscopy and metabolites were also identified by multivariate statistical analysis. Metabolic pathways associations were also built up by ingenuity pathway analysis (IPA). Bioinformatics analysis of metabolites characterized the effect of metabolism in the 4 groups; it showed that the 21% of oxygen is the most “physiological” and appropriate concentration to be used for resuscitation. Our data indicate that resuscitation with 21% of oxygen seems to be optimal in terms of survival, rapidity of resuscitation, and metabolic profile in the present animal model. These findings need to be confirmed with metabolomics in human and, if so, the knowledge of the perinatal asphyxia condition may significantly improve.
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