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Chen JH, Wu J, Yang XY, Li J, Huang NQ, Shi SP, Feng F, Li Q, Yu CY, Luo Y. Diagnostic Value of the Electroencephalogram and Cerebrospinal Fluid in Viral Encephalitis. Neurologist 2022; 27:225-229. [PMID: 35184121 DOI: 10.1097/nrl.0000000000000395] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Electroencephalogram (EEG) and cerebrospinal fluid (CSF) are widely used in the clinical diagnosis of viral encephalitis (VE), but their value in the diagnosis of VE and the detection rate of abnormal indicators need to be further supported by more clinical data. METHODS In this study, routine laboratory testing, biochemical examinations of cerebrospinal fluid (CSF) and EEG characteristics were performed in patients with VE to guide the diagnosis and treatment of VE in clinical settings. A total of 330 patients with VE were enrolled in the Department of Neurology of the Third Affiliated Hospital of Zunyi Medical University from January 1, 2015 to January 30, 2020. EEG, routine testing and assessment of biochemical indicators of CSF were performed within 10 days after admission, and the results were analyzed by paired χ 2 test to compare the diagnostic value of EEG and CSF for VE. RESULTS In 330 cases of VE, 283 cases (85.76%) had abnormal EEG, and 189 cases (57.27%) had abnormal CSF indicators. The incidence of EEG abnormalities was higher than that of CSF indicators, and the difference was statistically significant ( P <0.05). CONCLUSIONS Both the EEG and CSF analysis are valuable indicators in the diagnosis of VE patients. Compared with the CSF examination, the EEG examination had a better diagnostic efficacy for the diagnosis of VE. In addition, a normal EEG or a normal CSF level cannot exclude VE, and it is still necessary to develop new diagnostic indicators to cover all viral encephalitides.
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Affiliation(s)
| | - Jie Wu
- Scientific Research Center
| | | | | | | | - Shang-Peng Shi
- Department of Quality Management, The First People's Hospital of Zunyi (The Third Affiliated Hospital of Zunyi Medical University)
| | | | | | - Chang-Yin Yu
- Department of Neurology, The Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
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Urinary Kininogen-1 and Retinol binding protein-4 respond to Acute Kidney Injury: predictors of patient prognosis? Sci Rep 2016; 6:19667. [PMID: 26792617 PMCID: PMC4726181 DOI: 10.1038/srep19667] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 12/02/2015] [Indexed: 01/09/2023] Open
Abstract
Implementation of therapy for acute kidney injury (AKI) depends on successful prediction of individual patient prognosis. Clinical markers as serum creatinine (sCr) have limitations in sensitivity and early response. The aim of the study was to identify novel molecules in urine which show altered levels in response to AKI and investigate their value as predictors of recovery. Changes in the urinary proteome were here investigated in a cohort of 88 subjects (55 AKI patients and 33 healthy donors) grouped in discovery and validation independent cohorts. Patients’ urine was collected at three time points: within the first 48 h after diagnosis(T1), at 7 days of follow-up(T2) and at discharge of Nephrology(T3). Differential gel electrophoresis was performed and data were confirmed by Western blot (WB), liquid chromatography/mass spectrometry (LC-MS/MS) and enzyme-linked immunosorbent assay (ELISA). Retinol binding protein 4 (RBP4) and kininogen-1 (KNG1) were found significantly altered following AKI. RBP4 increased at T1, and progressively decreased towards normalization. Maintained decrease was observed for KNG1 from T1. Individual patient response along time revealed RBP4 responds to recovery earlier than sCr. In conclusion, KNG1 and RBP4 respond to AKI. By monitoring RBP4, patient’s recovery can be anticipated pointing to a role of RBP4 in prognosis evaluation.
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Westhoff D, Witlox J, van Aalst C, Scholtens RM, de Rooij SE, van Munster BC, de Jonghe JFM, Houdijk APJ, Eikelenboom P, van Westerloo DJ, van de Beek D, van Gool WA, Koenderman L. Preoperative protein profiles in cerebrospinal fluid in elderly hip fracture patients at risk for delirium: A proteomics and validation study. BBA CLINICAL 2015; 4:115-22. [PMID: 26675981 PMCID: PMC4661734 DOI: 10.1016/j.bbacli.2015.10.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 10/12/2015] [Accepted: 10/26/2015] [Indexed: 12/14/2022]
Abstract
BACKGROUND A neuroinflammatory response is suggested to play an important role in delirium, a common complication in older hospitalized patients. We examined whether hip fracture patients who develop postoperative delirium have a different proteome in cerebrospinal fluid (CSF) prior to surgery. METHODS Patients (≥ 75 years) were admitted for hip fracture surgery. CSF was collected during spinal anaesthesia; proteins were separated using gel electrophoresis and identified with mass spectrometry. We compared the proteome of patients with and without postoperative delirium. Findings were validated in an independent, comparable cohort using immuno-assays. RESULTS In the derivation cohort 53 patients were included, 35.8% developed postoperative delirium. We identified differences in levels of eight CSF proteins between patients with and without subsequent delirium: complement factor C3, contactin-1, fibulin-1 and I-beta-1,3-N-acetylglucosaminyltransferase were significantly lower in patients with postoperative delirium, while neural cell adhesion molecule-2, fibrinogen, zinc-α-2-glycoprotein and haptoglobin levels were significantly higher. In the validation cohort 21.2% of 52 patients developed postoperative delirium. Immuno-assays confirmed contactin-1 results although not statistically significant. Complement factor C3 was significantly higher in patients with postoperative delirium. CONCLUSION Our results show the complexity of pathophysiological mechanisms involved in delirium and emphasizes the need of independent validation of findings. GENERAL SIGNIFICANCE This study highlights the challenges and inconsistent findings in studies of delirium, a serious complication in older patients. We analysed proteins in CSF, the most proximal fluid to the brain. All patients were free from delirium at the time of sampling.
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Affiliation(s)
- Dunja Westhoff
- Department of Neurology, Academic Medical Center, PO box 22660, 1100 DD Amsterdam, The Netherlands
| | - Joost Witlox
- Department of Geriatrics, Medical Center Alkmaar, Wilhelminalaan 12, 1815 JD Alkmaar, The Netherlands
| | - Corneli van Aalst
- Department of Respiratory Medicine, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
| | - Rikie M Scholtens
- Department of Geriatrics, Academic Medical Center, PO box 22660, 1100 DD Amsterdam, The Netherlands
| | - Sophia E de Rooij
- Department of Geriatrics, Academic Medical Center, PO box 22660, 1100 DD Amsterdam, The Netherlands ; Department of Geriatrics, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Barbara C van Munster
- Department of Geriatrics, Academic Medical Center, PO box 22660, 1100 DD Amsterdam, The Netherlands ; Department of Geriatrics, Gelre hospitals, Albert Schweitzerlaan 31, 7334 DZ Apeldoorn, The Netherlands
| | - Jos F M de Jonghe
- Department of Geriatrics, Medical Center Alkmaar, Wilhelminalaan 12, 1815 JD Alkmaar, The Netherlands
| | - Alexander P J Houdijk
- Department of Surgery, Medical Center Alkmaar, Wilhelminalaan 12, 1815 JD Alkmaar, The Netherlands ; Trial Center Holland Health, Alkmaar, The Netherlands
| | | | - David J van Westerloo
- Department of Intensive Care Medicine, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands
| | - Diederik van de Beek
- Department of Neurology, Academic Medical Center, PO box 22660, 1100 DD Amsterdam, The Netherlands
| | - Willem A van Gool
- Department of Neurology, Academic Medical Center, PO box 22660, 1100 DD Amsterdam, The Netherlands
| | - Leo Koenderman
- Department of Respiratory Medicine, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
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Yang Y, Mu J, Chen G, Zhan Y, Zhong J, Wei Y, Cheng K, Qin B, You H, Xie P. iTRAQ-based quantitative proteomic analysis of cerebrospinal fluid reveals NELL2 as a potential diagnostic biomarker of tuberculous meningitis. Int J Mol Med 2015; 35:1323-32. [PMID: 25760060 DOI: 10.3892/ijmm.2015.2131] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 02/17/2015] [Indexed: 11/06/2022] Open
Abstract
Tuberculous meningitis (TBM) is a serious complication of tuberculosis that affects the central nervous system. As TBM may result in permanent sequelae and death, rapid, accurate diagnostic tests using novel biomarkers are required for the early diagnosis and treatment of TBM. A quantitative proteomic study was therefore performed to identify differential proteins in the cerebrospinal fluid (CSF) obtained from TBM patients (n=12) and healthy controls (n=12). CSF samples were labelled with iTRAQ™ and analyzed by LC-MS/MS. Gene ontology and Pathway analysis were conducted using DAVID bioinformatics resources. Neural epidermal growth factor-like like 2 (NELL2) with the largest fold-change value was selected for validation by western blotting. Proteomic phenotyping revealed over-representation in two inflammation-associated processes, complement and coagulation cascades as well as cell adhesion molecules. Western blotting showed a significant decrease in NELL2 levels in TBM subjects compared to healthy controls. The AUC analysis revealed NELL2 was able to distinguish TBM subjects from healthy controls with 83.3% sensitivity and 75% specificity. In conclusion, the results showed that CSF NELL2 is a potential diagnostic biomarker for TBM. Further evaluation of these findings in larger studies including anti-tuberculosis medicated and unmedicated patient cohorts with other intracranial infectious diseases is required for clinical translation.
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Affiliation(s)
- Yongtao Yang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Jun Mu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Guanghui Chen
- Institute of Neuroscience, Chongqing Medical University, Chongqing, P.R. China
| | - Yuan Zhan
- Institute of Neuroscience, Chongqing Medical University, Chongqing, P.R. China
| | - Jiaju Zhong
- Institute of Neuroscience, Chongqing Medical University, Chongqing, P.R. China
| | - Youdong Wei
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Ke Cheng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Bin Qin
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Hongmin You
- Institute of Neuroscience, Chongqing Medical University, Chongqing, P.R. China
| | - Peng Xie
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
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van Gool AJ, Hendrickson RC. The proteomic toolbox for studying cerebrospinal fluid. Expert Rev Proteomics 2014; 9:165-79. [DOI: 10.1586/epr.12.6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Jha MK, Suk K. Glia-based biomarkers and their functional role in the CNS. Expert Rev Proteomics 2014; 10:43-63. [DOI: 10.1586/epr.12.70] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Jha MK, Kim JH, Suk K. Proteome of brain glia: the molecular basis of diverse glial phenotypes. Proteomics 2013; 14:378-98. [PMID: 24124134 DOI: 10.1002/pmic.201300236] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 07/16/2013] [Accepted: 07/30/2013] [Indexed: 12/11/2022]
Abstract
Several different types of nonneuronal glial cells with diverse phenotypes are present in the CNS, and all have distinct indispensible functions. Although glial cells primarily provide neurons with metabolic and structural support in the healthy brain, they may switch phenotype from a "resting" to a "reactive" state in response to pathological insults. Furthermore, this reactive gliosis is an invariant feature of the pathogeneses of CNS maladies. The glial proteome serves as a signature of glial phenotype, and not only executes physiological functions, but also acts as a molecular mediator of the reactive glial phenotype. The glial proteome is also involved in intra- and intercellular communications as exemplified by glia-glia and neuron-glia interactions. The utilization of authoritative proteomic tools and the bioinformatic analyses have helped to profile the brain glial proteome and explore the molecular mechanisms of diverse glial phenotypes. Furthermore, technologic innovations have equipped the field of "glioproteomics" with refined tools for studies of the expression, interaction, and function of glial proteins in the healthy and in the diseased CNS. Glioproteomics is expected to contribute to the elucidation of the molecular mechanisms of CNS pathophysiology and to the discovery of biomarkers and theragnostic targets in CNS disorders.
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Affiliation(s)
- Mithilesh Kumar Jha
- Department of Pharmacology, Brain Science & Engineering Institute, Kyungpook National University School of Medicine, Daegu, South Korea
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Im SK, Yeo M, Lee KJ. Proteomic identification of proteins suggestive of immune-mediated response or neuronal degeneration in serum of achalasia patients. Gut Liver 2013; 7:411-6. [PMID: 23898380 PMCID: PMC3724028 DOI: 10.5009/gnl.2013.7.4.411] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 10/19/2012] [Accepted: 10/26/2012] [Indexed: 12/18/2022] Open
Abstract
Background/Aims The primary pathophysiologic abnormality in achalasia is known to be a loss of inhibitory myenteric ganglion cells, which may result from an immune-mediated response or neuronal degeneration. The aim of this study was to identify proteins suggestive of an immune-mediated response or neuronal degeneration in the serum of achalasia patients using a proteomic analysis. Methods Blood samples were collected from five symptomatic achalasia patients and five sex- and age-matched healthy controls. Serum proteomic analysis was conducted, and the protein spots were identified using matrix-assisted laser desorption ionization/time-of-flight and a proteomics analyzer. The serum level of C3 was measured by enzyme-linked immunosorbent assay in nine patients with achalasia and 18 sex- and age-matched healthy controls. Results Of the 658 matched protein spots, 28 spots were up-regulated over 2-fold in the serum from achalasia patients compared with that from controls. The up-regulated proteins included complement C4B5, complement C3, cyclin-dependent kinase 5, transthyretin, and alpha 2 macroglobulin. The serum levels of C3 in achalasia patients were significantly higher than those of controls. Conclusions The serum proteomic analysis of achalasia patients suggests an immune-mediated response or neuronal degeneration. Further validation studies in larger samples and the esophageal tissue of achalasia patients are required.
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Affiliation(s)
- Seon Kyo Im
- Department of Gastroenterology, Ajou University School of Medicine, Suwon, Korea
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Cai X, Huang W, Qiao Y, Chen Y, Du S, Chen D, Yu S, Che R, Jiang Y. Proteomics identifies differentially expressed proteins in neonatal murine thymus compared with adults. Proteome Sci 2012; 10:65. [PMID: 23134655 PMCID: PMC3583686 DOI: 10.1186/1477-5956-10-65] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Accepted: 11/02/2012] [Indexed: 11/14/2022] Open
Abstract
Background The thymus is an immune organ essential for life and plays a crucial role in the development of T cells. It undergoes a fetal to adult developmental maturation process occurring in mouse during the postnatal months. The molecular modifications underlying these ontogenic changes are essentially unknown. Here we used a differential proteomic-based technique (2D-Difference Gel Electrophoresis) coupled with matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrometry to search for key proteins in the postnatal development of the thymus. Eight different BALB/c mice were used in the study: four mice aged of 1 day (neonatal) and four mice aged of 60 days (adult). Protein samples derived from thymus were labeled and run in 2D-PAGE (Two-Dimensional Polyacrylamide Gel Electrophoresis). One whole-thymus tissue from each mouse was run on gels and each gel containing a pooled sample of the eight mice was run in parallel. The pooled sample was set as the internal pool, containing equal amount of each protein extract used in the experiment. Gels were matched and compared with Difference In-gel Analysis software. Differential spots were picked, in-gel digested and peptide mass fingerprints were obtained. Results Among the differentially regulated proteins in neonatal thymus group, 111 proteins were identified by mass spectrometry, of which 95 proteins were up-regulated and 16 proteins were down-regulated. The identified proteins belong to several functional categories, including cell proliferation, cycle and apoptosis, transcription regulation, signal transduction, nucleotide processing, proteolysis and translation, protein folding, metabolism, oxidoreduction, cytoskeleton, immune response, and embryonic development. The major interaction networks comprised of cellular function and maintenance, cellular assembly and organization, and metabolism were also identified by STRING analysis. Conclusions The demonstrated molecular changes are relevant for understanding thymus development as well as neonatal immune function, and they provide the diagnostic disease markers. Further studies will be required to describe in detail the role of the identified proteins in thymus maturation and in the specific functions of neonatal thymus.
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Affiliation(s)
- Xinze Cai
- Central Laboratory, First Affiliated Hospital of China Medical University, Shenyang, 110001, China.
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11
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Barone R, Sturiale L, Palmigiano A, Zappia M, Garozzo D. Glycomics of pediatric and adulthood diseases of the central nervous system. J Proteomics 2012; 75:5123-39. [DOI: 10.1016/j.jprot.2012.07.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 06/05/2012] [Accepted: 07/04/2012] [Indexed: 12/14/2022]
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Martins-de-Souza D, Guest PC, Rahmoune H, Bahn S. Proteomic approaches to unravel the complexity of schizophrenia. Expert Rev Proteomics 2012; 9:97-108. [PMID: 22292827 DOI: 10.1586/epr.11.70] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Schizophrenia is a debilitating mental disorder that affects approximately 30 million people worldwide. The development and progression of this disease is now thought to be precipitated through a complex interaction between altered gene function and environmental factors. Proteomic analyses have been applied extensively over the past 10 years in studies of several tissues from schizophrenic patients, resulting in increased insight into the affected molecular pathways. In addition, these proteomic approaches have led to the identification of a set of molecular biomarker assays as the first blood-based test to aid in the diagnosis of schizophrenia. Here, we discuss the main outcome of these investigations and suggest a practical means of integrating and translating the findings between the brain and peripheral blood to increase our understanding of schizophrenia pathophysiology.
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Affiliation(s)
- Daniel Martins-de-Souza
- Department of Chemical Engineering & Biotechnology, Institute of Biotechnology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QT, UK.
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Otto M, Bowser R, Turner M, Berry J, Brettschneider J, Connor J, Costa J, Cudkowicz M, Glass J, Jahn O, Lehnert S, Malaspina A, Parnetti L, Petzold A, Shaw P, Sherman A, Steinacker P, Süssmuth S, Teunissen C, Tumani H, Wuolikainen A, Ludolph A. Roadmap and standard operating procedures for biobanking and discovery of neurochemical markers in ALS. ACTA ACUST UNITED AC 2012; 13:1-10. [PMID: 22214350 DOI: 10.3109/17482968.2011.627589] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Despite major advances in deciphering the neuropathological hallmarks of amyotrophic lateral sclerosis (ALS), validated neurochemical biomarkers for monitoring disease activity, earlier diagnosis, defining prognosis and unlocking key pathophysiological pathways are lacking. Although several candidate biomarkers exist, translation into clinical application is hindered by small sample numbers, especially longitudinal, for independent verification. This review considers the potential routes to the discovery of neurochemical markers in ALS, and provides a consensus statement on standard operating procedures that will facilitate multicenter collaboration, validation and ultimately clinical translation.
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Affiliation(s)
- Markus Otto
- Department of Neurology, University of Ulm, Oberer Eselsberg 34, Ulm, Germany.
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Vanheel A, Daniels R, Plaisance S, Baeten K, Hendriks JJA, Leprince P, Dumont D, Robben J, Brône B, Stinissen P, Noben JP, Hellings N. Identification of protein networks involved in the disease course of experimental autoimmune encephalomyelitis, an animal model of multiple sclerosis. PLoS One 2012; 7:e35544. [PMID: 22530047 PMCID: PMC3328452 DOI: 10.1371/journal.pone.0035544] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Accepted: 03/19/2012] [Indexed: 01/14/2023] Open
Abstract
A more detailed insight into disease mechanisms of multiple sclerosis (MS) is crucial for the development of new and more effective therapies. MS is a chronic inflammatory autoimmune disease of the central nervous system. The aim of this study is to identify novel disease associated proteins involved in the development of inflammatory brain lesions, to help unravel underlying disease processes. Brainstem proteins were obtained from rats with MBP induced acute experimental autoimmune encephalomyelitis (EAE), a well characterized disease model of MS. Samples were collected at different time points: just before onset of symptoms, at the top of the disease and following recovery. To analyze changes in the brainstem proteome during the disease course, a quantitative proteomics study was performed using two-dimensional difference in-gel electrophoresis (2D-DIGE) followed by mass spectrometry. We identified 75 unique proteins in 92 spots with a significant abundance difference between the experimental groups. To find disease-related networks, these regulated proteins were mapped to existing biological networks by Ingenuity Pathway Analysis (IPA). The analysis revealed that 70% of these proteins have been described to take part in neurological disease. Furthermore, some focus networks were created by IPA. These networks suggest an integrated regulation of the identified proteins with the addition of some putative regulators. Post-synaptic density protein 95 (DLG4), a key player in neuronal signalling and calcium-activated potassium channel alpha 1 (KCNMA1), involved in neurotransmitter release, are 2 putative regulators connecting 64% of the identified proteins. Functional blocking of the KCNMA1 in macrophages was able to alter myelin phagocytosis, a disease mechanism highly involved in EAE and MS pathology. Quantitative analysis of differentially expressed brainstem proteins in an animal model of MS is a first step to identify disease-associated proteins and networks that warrant further research to study their actual contribution to disease pathology.
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Affiliation(s)
- Annelies Vanheel
- Biomedical Research Institute, Hasselt University and Transnationale Universiteit Limburg, School of Life Sciences, Hasselt, Belgium
| | - Ruth Daniels
- Biomedical Research Institute, Hasselt University and Transnationale Universiteit Limburg, School of Life Sciences, Hasselt, Belgium
| | - Stéphane Plaisance
- VIB – Bioinformatics Training and Service Facility (BITS), Gent, Belgium
| | - Kurt Baeten
- Biomedical Research Institute, Hasselt University and Transnationale Universiteit Limburg, School of Life Sciences, Hasselt, Belgium
| | - Jerome J. A. Hendriks
- Biomedical Research Institute, Hasselt University and Transnationale Universiteit Limburg, School of Life Sciences, Hasselt, Belgium
| | | | - Debora Dumont
- Biomedical Research Institute, Hasselt University and Transnationale Universiteit Limburg, School of Life Sciences, Hasselt, Belgium
| | - Johan Robben
- Biochemistry, Molecular and Structural Biology, Katholieke Universiteit Leuven, Heverlee, Belgium
| | - Bert Brône
- Biomedical Research Institute, Hasselt University and Transnationale Universiteit Limburg, School of Life Sciences, Hasselt, Belgium
| | - Piet Stinissen
- Biomedical Research Institute, Hasselt University and Transnationale Universiteit Limburg, School of Life Sciences, Hasselt, Belgium
| | - Jean-Paul Noben
- Biomedical Research Institute, Hasselt University and Transnationale Universiteit Limburg, School of Life Sciences, Hasselt, Belgium
| | - Niels Hellings
- Biomedical Research Institute, Hasselt University and Transnationale Universiteit Limburg, School of Life Sciences, Hasselt, Belgium
- * E-mail:
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Li Y, Qin Z, Yang M, Qin Y, Lin C, Liu S. Differential expression of complement proteins in cerebrospinal fluid from active multiple sclerosis patients. J Cell Biochem 2011; 112:1930-7. [PMID: 21445879 DOI: 10.1002/jcb.23113] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Multiple sclerosis (MS) is a demyelinating disease of the central nervous system with complex immunopathogenesis. Using the 2-D DIGE technology, we separate CSF proteins from patients with active MS and control subjects. Three of the seven differential proteins identified were related with complement system, and the network analysis of the differential proteins revealed complement activation involvement in active MS. Complement C4b (gamma chain) was confirmed elevated by performing western blotting analysis (P < 0.01). The present results are an independent quantitative proteomic measure in CSF from active MS patients. The differential expression of the complement C4b and related proteins in CSF provides potential biomarkers as well as evidence for the involvement of complement activation in the pathogenesis of MS disease.
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Affiliation(s)
- Yun Li
- Institute of Biochemistry and Molecular Biology, School of Medicine, Shandong University, Jinan 250012, China
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Kroksveen A, Opsahl J, Aye T, Ulvik R, Berven F. Proteomics of human cerebrospinal fluid: Discovery and verification of biomarker candidates in neurodegenerative diseases using quantitative proteomics. J Proteomics 2011; 74:371-88. [DOI: 10.1016/j.jprot.2010.11.010] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2010] [Revised: 11/16/2010] [Accepted: 11/16/2010] [Indexed: 01/01/2023]
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Rizzello L, Sorce B, Sabella S, Vecchio G, Galeone A, Brunetti V, Cingolani R, Pompa PP. Impact of nanoscale topography on genomics and proteomics of adherent bacteria. ACS NANO 2011; 5:1865-76. [PMID: 21344880 DOI: 10.1021/nn102692m] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Bacterial adhesion onto inorganic/nanoengineered surfaces is a key issue in biotechnology and medicine, because it is one of the first necessary steps to determine a general pathogenic event. Understanding the molecular mechanisms of bacteria-surface interaction represents a milestone for planning a new generation of devices with unanimously certified antibacterial characteristics. Here, we show how highly controlled nanostructured substrates impact the bacterial behavior in terms of morphological, genomic, and proteomic response. We observed by atomic force microscopy (AFM) and scanning electron microscopy (SEM) that type-1 fimbriae typically disappear in Escherichia coli adherent onto nanostructured substrates, as opposed to bacteria onto reference glass or flat gold surfaces. A genetic variation of the fimbrial operon regulation was consistently identified by real time qPCR in bacteria interacting with the nanorough substrates. To gain a deeper insight into the molecular basis of the interaction mechanisms, we explored the entire proteomic profile of E. coli by 2D-DIGE, finding significant changes in the bacteria adherent onto the nanorough substrates, such as regulations of proteins involved in stress processes and defense mechanisms. We thus demonstrated that a pure physical stimulus, that is, a nanoscale variation of surface topography, may play per se a significant role in determining the morphological, genetic, and proteomic profile of bacteria. These data suggest that in depth investigations of the molecular processes of microorganisms adhering to surfaces are of great importance for the design of innovative biomaterials with active biological functionalities.
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Affiliation(s)
- Loris Rizzello
- Italian Institute of Technology, Center for Bio-Molecular Nanotechnology, Via Barsanti-73010 Arnesano, Lecce, Italy
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Roulhac PL, Ward JM, Thompson JW, Soderblom EJ, Silva M, Moseley MA, Jarvis ED. Microproteomics: quantitative proteomic profiling of small numbers of laser-captured cells. Cold Spring Harb Protoc 2011; 2011:pdb.prot5573. [PMID: 21285273 DOI: 10.1101/pdb.prot5573] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Petra L Roulhac
- Department of Neurobiology, Howard Hughes Medical Institute, Duke University Medical Center, Durham, North Carolina 27710, USA.
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Brettschneider J, Hartmann N, Lehmensiek V, Mogel H, Ludolph AC, Tumani H. Cerebrospinal fluid markers of idiopathic intracranial hypertension: is the renin-angiotensinogen system involved? Cephalalgia 2010; 31:116-21. [PMID: 20974581 DOI: 10.1177/0333102410375726] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND The causes underlying idiopathic intracranial hypertension (IIH) are poorly understood. METHODS To identify disease-related biomarkers that could offer a new insight into IIH pathology, we analyzed the cerebrospinal fluid (CSF) of 18 patients with IIH and 18 controls using two-dimensional fluorescence differential in-gel electrophoresis (2-D DIGE). RESULTS We found six proteins that were upregulated in IIH (sterol regulatory element-binding protein 1, zinc-alpha-2-glycoprotein, immunoglobulin heavy constant alpha 1 [IGHA1], alpha-1-antitrypsin [SERPINA1], serotransferrin, haptoglobin) and four proteins that were downregulated (hemopexin, angiotensinogen, vitamin-D-binding protein, transthyretin). The validity of our approach was confirmed for one candidate protein (angiotensinogen). To account for a dependency from blood-CSF barrier function, the ratio of angiotensinogen and albumin CSF-to-serum quotients (Qang/Qalb) was determined, which confirmed the downregulation of angiotensinogen in IIH (p = .04). CONCLUSION Previous studies showed the intrinsic renin-angiotensin system (RAS) to regulate choroid plexus blood flow and CSF production. Altered levels of angiotensinogen could indicate an imbalance of the RAS in IIH that may provide new targets for therapeutic intervention.
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Santos HM, Lodeiro C, Capelo J. Analytical Proteomics: An emerging field? J Proteomics 2010; 73:1411-4. [DOI: 10.1016/j.jprot.2010.03.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2010] [Accepted: 03/19/2010] [Indexed: 01/19/2023]
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Gandhi KS, McKay FC, Diefenbach E, Crossett B, Schibeci SD, Heard RN, Stewart GJ, Booth DR, Arthur JW. Novel approaches to detect serum biomarkers for clinical response to interferon-beta treatment in multiple sclerosis. PLoS One 2010; 5:e10484. [PMID: 20463963 PMCID: PMC2864746 DOI: 10.1371/journal.pone.0010484] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2009] [Accepted: 04/09/2010] [Indexed: 11/28/2022] Open
Abstract
Interferon beta (IFNβ) is the most common immunomodulatory treatment for relapsing-remitting multiple sclerosis (RRMS). However, some patients fail to respond to treatment. In this study, we identified putative clinical response markers in the serum and plasma of people with multiple sclerosis (MS) treated with IFNβ. In a discovery-driven approach, we use 2D-difference gel electrophoresis (DIGE) to identify putative clinical response markers and apply power calculations to identify the sample size required to further validate those markers. In the process we have optimized a DIGE protocol for plasma to obtain cost effective and high resolution gels for effective spot comparison. APOA1, A2M, and FIBB were identified as putative clinical response markers. Power calculations showed that the current DIGE experiment requires a minimum of 10 samples from each group to be confident of 1.5 fold difference at the p<0.05 significance level. In a complementary targeted approach, Cytometric Beadarray (CBA) analysis showed no significant difference in the serum concentration of IL-6, IL-8, MIG, Eotaxin, IP-10, MCP-1, and MIP-1α, between clinical responders and non-responders, despite the association of these proteins with IFNβ treatment in MS.
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Affiliation(s)
- Kaushal S. Gandhi
- Westmead Millennium Institute, University of Sydney, Sydney, Australia
- Discipline of Medicine, Sydney Medical School, University of Sydney, Sydney, Australia
| | - Fiona C. McKay
- Westmead Millennium Institute, University of Sydney, Sydney, Australia
| | - Eve Diefenbach
- Westmead Millennium Institute, University of Sydney, Sydney, Australia
| | - Ben Crossett
- School of Molecular and Microbial Bioscience, University of Sydney, Sydney, Australia
| | | | - Robert N. Heard
- Westmead Millennium Institute, University of Sydney, Sydney, Australia
| | - Graeme J. Stewart
- Westmead Millennium Institute, University of Sydney, Sydney, Australia
| | - David R. Booth
- Westmead Millennium Institute, University of Sydney, Sydney, Australia
| | - Jonathan W. Arthur
- Discipline of Medicine, Sydney Medical School, University of Sydney, Sydney, Australia
- Sydney Bioinformatics, University of Sydney, Sydney, Australia
- * E-mail:
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