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urine proteomics

Yune-Jung Park, Seung-Ah Yoo, Ga-Ram Kim, Chul-Soo Cho, Wan-Uk Kim
Previously, we demonstrated that the urine proteome signature of patients with rheumatoid arthritis (RA) reflects inflammation-related cellular processes. Here, we measured interleukin (IL)-6, IL-8, and chemokine ligand 2 (CCL2) concentrations in the urine of RA patients and prospectively investigated their role in predicting RA activity and prognosis. One hundred seventy-three RA patients and 62 non-RA controls were recruited. Urinary IL-6, CCL2, and IL-8 levels were elevated in RA patients and correlated well with disease activity...
October 12, 2016: Scientific Reports
Carolina Landolt-Marticorena, Stephenie D Prokopec, Stacey Morrison, Babak Noamani, Dennisse Bonilla, Heather Reich, James Scholey, Carmen Avila-Casado, Paul R Fortin, Paul C Boutros, Joan Wither
BACKGROUND: Management of lupus nephritis (LN) would be greatly aided by the discovery of biomarkers that accurately reflect changes in disease activity. Here, we used a proteomics approach to identify potential urinary biomarkers associated with LN. METHODS: Urine was obtained from 60 LN patients with paired renal biopsies, 25 active non-LN SLE patients, and 24 healthy controls. Using Luminex, 128 analytes were quantified and normalized to urinary creatinine levels...
October 4, 2016: Arthritis Research & Therapy
Amalia Katafigioti, Ioannis Katafigiotis, Stavros Sfoungaristos, Christos Alamanis, Konstantinos Stravodimos, Ioannis Anastasiou, Eleni Roumelioti, Mordechai Duvdevani, Constantinos Constantinides
OBJECTIVE: To search which category of proteins can be detected in urine in order to examine subsequently its ability to improve our accuracy for the diagnosis of Prostate Cancer (PCa) as biomarkers in clinical useful fluids like urine and serum. Material and method(s): Urine samples of 127 patients were obtained after a vigorous transrectal prostatic massage to both lobes. The patients were considered to have a high risk for PCa according to their PSA (> 4 ng/ml), their digital rectal examination (DRE) (positive for suspicious prostatic lesions) or to their abnormal PSA kinetics (PSA velocity (PSAV > 0...
October 5, 2016: Archivio Italiano di Urologia, Andrologia
Shih-Yi Lin, Chao-Hsiang Chang, His-Chin Wu, Ching-Chan Lin, Kai-Po Chang, Chi-Rei Yang, Chi-Ping Huang, Wu-Huei Hsu, Chiz-Tzung Chang, Chao-Jung Chen
MALDI-TOF spectrometry has not been used for urinary exosome analysis. We used it for determining UC biomarkers. From 2012 to 2015, we enrolled 129 consecutive patients with UC and 62 participants without UC. Exosomes from their urine were isolated, and analyzed through MALDI-TOF spectrometry. Immunohistochemical (IHC) analysis of another 122 UC and 26 non-UC tissues was conducted to verify the discovered biomarkers. Two peaks at m/z 5593 (fragmented peptide of alpha-1-antitrypsin; sensitivity, 50.4%; specificity, 96...
September 30, 2016: Scientific Reports
Ling Wang, Tore Skotland, Viktor Berge, Kirsten Sandvig, Alicia Llorente
Exosomes have recently appeared as a novel source of non-invasive cancer biomarkers since tumor-specific molecules can be found in exosomes isolated from biological fluids. We have previously analyzed the proteome of urinary exosomes by mass spectrometry, and identified proteins differentially expressed in prostate cancer patients compared to healthy males. Since mass spectrometry is so far not commonly used in clinical laboratories, we have here investigated whether antibody-based methods such as Western blot or ELISA can be used to validate the use of the identified proteins as prostate cancer biomarkers...
September 21, 2016: European Journal of Pharmaceutical Sciences
Hongfeng Huang, Jingyi Zhou, Jianghua Chen
Acute kidney injury (AKI) is one of the most common complications in critically ill patients, resulting in high morbidity and mortality. AKI usually occurs after major surgery, severe infection or drug-induced nephrotoxicity and is associated with prolonged hospital stays, increased costs and adverse clinical outcomes. The diagnosis of AKI is currently based on decreased glomerular filtration rate (GFR) and urine output, and increased serum creatinine. Novel biomarkers are required for early identification of patients with AKI to allow timely therapy and improve patient outcomes...
September 9, 2016: Current Protein & Peptide Science
Karen Gjesing Welinder, Rasmus Hansen, Michael Toft Overgaard, Malene Brohus, Mads Sønderkær, Martin von Bergen, Ulrike Rolle-Kampczyk, Wolfgang Otto, Tomas L Lindahl, Karin Arinell, Alina L Evans, Jon E Swenson, Inge G Revsbech, Ole Frobert
Brown bears (Ursus arctos) hibernate for 5-7 months without eating, drinking, urinating and defecating at a metabolic rate of only 25% of the summer activity rate. Nonetheless, they emerge healthy and alert in spring. We quantified the biochemical adaptations for hibernation by comparing the proteome, metabolome, and hematologic features of blood from hibernating and active free-ranging subadult brown bears with a focus on conservation of health and energy. We found that total plasma protein concentration increased during hibernation, even though the concentrations of most individual plasma proteins decreased, as did the white blood cell types...
September 8, 2016: Journal of Biological Chemistry
Jiashun Zeng, Qiong Wen, Rong Rong, Fengxian Huang, Qiongqiong Yang, Xueqing Tang, Feng He, Naya Huang, Xueqing Yu
AIMS: The purpose of this study was to identify predictive markers of irbesartan (an angiotensin receptor blocker) treatment response in immunoglobulin A nephropathy (IgAN) patients. METHODS: Urine samples were collected both before and after irbesartan treatment in IgAN patients and compared with urine from healthy volunteers. The total urinary protein produced in 24 h was measured to determine therapeutic response. The urinary proteome was evaluated by two-dimensional gel electrophoresis coupled with MALDI-TOF-MS/MS analysis...
September 7, 2016: Genetic Testing and Molecular Biomarkers
Daniela Braconi, Giulia Bernardini, Alessandro Paffetti, Lia Millucci, Michela Geminiani, Marcella Laschi, Bruno Frediani, Barbara Marzocchi, Annalisa Santucci
Alkaptonuria (AKU) is an ultra-rare inborn error of metabolism associated with a defective catabolism of phenylalanine and tyrosine leading to increased systemic levels of homogentisic acid (HGA). Excess HGA is partly excreted in the urine, partly accumulated within the body and deposited onto connective tissues under the form of an ochronotic pigment, leading to a range of clinical manifestations. No clear genotype/phenotype correlation was found in AKU, and today there is the urgent need to identify biomarkers able to monitor AKU progression and evaluate response to treatment...
August 30, 2016: International Journal of Biochemistry & Cell Biology
Magdalena Krochmal, Marco Fernandes, Szymon Filip, Claudia Pontillo, Holger Husi, Jerome Zoidakis, Harald Mischak, Antonia Vlahou, Joachim Jankowski
The peptiCKDdb is a publicly available database platform dedicated to support research in the field of chronic kidney disease (CKD) through identification of novel biomarkers and molecular features of this complex pathology. PeptiCKDdb collects peptidomics and proteomics datasets manually extracted from published studies related to CKD. Datasets from peptidomics or proteomics, human case/control studies on CKD and kidney or urine profiling were included. Data from 114 publications (studies of body fluids and kidney tissue: 26 peptidomics and 76 proteomics manuscripts on human CKD, and 12 focusing on healthy proteome profiling) are currently deposited and the content is quarterly updated...
2016: Database: the Journal of Biological Databases and Curation
Pedro Magalhães, Harald Mischak, Petra Zürbig
PURPOSE OF REVIEW: Urine is the most useful of body fluids for biomarker research. Therefore, we have focused on urinary proteomics, using capillary electrophoresis coupled to mass spectrometry, to investigate kidney diseases in recent years. RECENT FINDINGS: Several urinary proteomics studies for the detection of various kidney diseases have indicated the potential of this approach aimed at diagnostic and prognostic assessment. Urinary protein biomarkers such as collagen fragments, serum albumin, α-1-antitrypsin, and uromodulin can help to explain the processes involved during disease progression...
November 2016: Current Opinion in Nephrology and Hypertension
Pavel Stopka, Barbora Kuntová, Petr Klempt, Leona Havrdová, Martina Černá, Romana Stopková
Chemical communication is mediated by sex-biased signals abundantly present in the urine, saliva and tears. Because most studies concentrated on the urinary signals, we aimed to determine the saliva proteome in wild Mus musculus musculus, to extend the knowledge on potential roles of saliva in chemical communication. We performed the gel-free quantitative LC-MS/MS analyses of saliva and identified 633 proteins with 134 (21%) of them being sexually dimorphic. They include proteins that protect and transport volatile organic compounds in their beta barrel including LCN lipocalins, major urinary proteins (MUPs), and odorant binding proteins (OBPs)...
2016: Scientific Reports
Éva Csősz, Gergő Kalló, Bernadett Jakob, Eszter Deák, Adrienne Csutak, József Tőzsér
: Identification of new biomarkers specific for various pathological conditions is an important field in medical sciences. Body fluids have emerging potential in biomarker studies especially those which are continuously available and can be collected by non-invasive means. Changes in the protein composition of body fluids such as tears, saliva, sweat, etc. may provide information on both local and systemic conditions of medical relevance. In this review, our aim is to discuss the quantitative proteomics techniques used in biomarker studies, and to present advances in quantitative body fluid proteomics of non-invasively collectable body fluids with relevance to biomarker identification...
August 16, 2016: Journal of Proteomics
Ravi C Dwivedi, Mario Navarrete, Nora Choi, Victor Spicer, Claudio Rigatto, Rakesh C Arora, Oleg Krokhin, Julie Ho, John A Wilkins
BACKGROUND: The urinary proteome of patients undergoing cardiopulmonary bypass (CPB) may provide important insights into systemic and renal changes associated with the procedure. Such information may ultimately provide a basis to differentiate changes or properties associated with the development of acute kidney injury. While mass spectrometry (MS) analysis offers the potential for in-depth compositional analysis it is often limited in coverage and relative quantitation capacity. The aim of this study was to develop a process flow for the preparation and comparison of the intraoperative urinary proteome...
2016: Clinical Proteomics
Morten Lindhardt, Frederik Persson, Petra Zürbig, Angelique Stalmach, Harald Mischak, Dick de Zeeuw, Hiddo Lambers Heerspink, Ronald Klein, Trevor Orchard, Massimo Porta, John Fuller, Rudolf Bilous, Nish Chaturvedi, Hans-Henrik Parving, Peter Rossing
BACKGROUND: Early prevention of diabetic nephropathy is not successful as early interventions have shown conflicting results, partly because of a lack of early and precise indicators of disease development. Urinary proteomics has shown promise in this regard and could identify those at high risk who might benefit from treatment. In this study we investigate its utility in a large type 2 diabetic cohort with normoalbuminuria. METHODS: We performed a post hoc analysis in the Diabetic Retinopathy Candesartan Trials (DIRECT-Protect 2 study), a multi centric randomized clinical controlled trial...
August 8, 2016: Nephrology, Dialysis, Transplantation
Samar Soliman, Chandra Mohan
Lupus nephritis (LN), a potentially destructive outcome of SLE, is a real challenge in the management of SLE because of the difficulty in diagnosing its subclinical onset and identifying relapses before serious complications set in. Conventional clinical parameters such as proteinuria, GFR, urine sediments, anti-dsDNA and complement levels are not sensitive or specific enough for detecting ongoing disease activity in lupus kidneys and early relapse of nephritis. There has long been a need for biomarkers of disease activity in LN...
August 3, 2016: Clinical Immunology: the Official Journal of the Clinical Immunology Society
Minu Sharma, Amit Sud, Tanzeer Kaur, Chanderdeep Tandon, S K Singla
Diminished mitochondrial activities were deemed to play an imperative role in surged oxidative damage perceived in hyperoxaluric renal tissue. Proteomics is particularly valuable to delineate the damaging effects of oxidative stress on mitochondrial proteins. The present study was designed to apply large-scale proteomics to describe systematically how mitochondrial proteins/pathways govern the renal damage and calcium oxalate crystal adhesion in hyperoxaluria. Furthermore, the potential beneficial effects of combinatorial therapy with N-acetylcysteine (NAC) and apocynin were studied to establish its credibility in the modulation of hyperoxaluria-induced alterations in mitochondrial proteins...
September 2016: Free Radical Research
Shilpa Kulkarni, Antonius Koller, Kartik M Mani, Ruofeng Wen, Alan Alfieri, Subhrajit Saha, Jian Wang, Purvi Patel, Nuno Bandeira, Chandan Guha, Emily I Chen
PURPOSE: Early and accurate assessment of radiation injury by radiation-responsive biomarkers is critical for triage and early intervention. Biofluids such as urine and serum are convenient for such analysis. Recent research has also suggested that exosomes are a reliable source of biomarkers in disease progression. In the present study, we analyzed total urine proteome and exosomes isolated from urine or serum for potential biomarkers of acute and persistent radiation injury in mice exposed to lethal whole body irradiation (WBI)...
November 1, 2016: International Journal of Radiation Oncology, Biology, Physics
Viktoria M Enk, Christian Baumann, Michaela Thoß, Kenneth C Luzynski, Ebrahim Razzazi-Fazeli, Dustin J Penn
Major urinary proteins (MUPs) are highly homologous proteoforms that function in binding, transporting and releasing pheromones in house mice. The main analytical challenge for studying variation in MUPs, even for state-of-the-art proteomics techniques, is their high degree of amino acid sequence homology. In this study we used unique peptides for proteoform-specific identification. We applied different search engines (ProteinPilot™vs. PEAKS®) and protein databases (MUP database vs. SwissProt + unreviewed MUPs), and found that proteoform identification is influenced by addressing background proteins (unregulated urinary proteins, non-MUPs) during the database search...
October 20, 2016: Molecular BioSystems
Pamella Araujo Malagrino, Gabriela Venturini, Patrícia Schneider Yogi, Rafael Dariolli, Kallyandra Padilha, Bianca Kiers, Tamiris Carneiro Gois, Karina Helena Morais Cardozo, Valdemir Melechco Carvalho, Jéssica Silva Salgueiro, Adriana Castello Costa Girardi, Silvia Maria de Oliveira Titan, José Eduardo Krieger, Alexandre Costa Pereira
: The main bottleneck in studies aiming to identify novel biomarkers in acute kidney injury (AKI) has been the identification of markers that are organ and process specific. Here, we have used different tissues from a controlled porcine renal ischemia/reperfusion (I/R) model to identify new, predominantly renal biomarker candidates for kidney disease. Urine and serum samples were analyzed in pre-ischemia, ischemia (60min) and 4, 11 and 16h post-reperfusion, and renal cortex samples after 24h of reperfusion...
July 22, 2016: Journal of Proteomics
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