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https://www.readbyqxmd.com/read/28697312/proteome-analysis-of-irradiated-endothelial-cells-reveals-persistent-alteration-in-protein-degradation-and-the-rhogdi-and-no-signalling-pathways
#1
Omid Azimzadeh, Vikram Subramanian, Susanne Ständer, Juliane Merl-Pham, Donna Lowe, Zarko Barjaktarovic, Simone Moertl, Ken Raj, Michael J Atkinson, Soile Tapio
PURPOSE: Epidemiological studies indicate that radiation doses as low as 0.5 Gy increase the risk of cardiovascular disease decades after the exposure. The aim of the present study was to investigate whether this radiation dose causes late molecular alterations in endothelial cells that could support the population-based data. MATERIALS AND METHODS: Human coronary artery endothelial cells were irradiated at 0.5 Gy (X-ray) and radiation-induced changes in the proteome were investigated after different time intervals (1, 7 and 14 d) using ICPL technology...
July 11, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/28679607/the-instructive-extracellular-matrix-of-the-lung-basic-composition-and-alterations-in-chronic-lung-disease
#2
Gerald Burgstaller, Bettina Oehrle, Michael Gerckens, Eric S White, Herbert B Schiller, Oliver Eickelberg
The pulmonary extracellular matrix (ECM) determines the tissue architecture of the lung, and provides mechanical stability and elastic recoil, which are essential for physiological lung function. Biochemical and biomechanical signals initiated by the ECM direct cellular function and differentiation, and thus play a decisive role in lung development, tissue remodelling processes and maintenance of adult homeostasis. Recent proteomic studies have demonstrated that at least 150 different ECM proteins, glycosaminoglycans and modifying enzymes are expressed in the lung, and these assemble into intricate composite biomaterials...
July 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28677755/proteomic-analysis-and-comparison-of-intra%C3%A2-and-extracranial-cerebral-atherosclerosis-responses-to-hyperlipidemia-in-rabbits
#3
Zhi-Lan Tu, Bo Yu, Dong-Ya Huang, Rajeev Ojha, Shu-Kui Zhou, He-Di An, Rong Liu, Cui Du, Nan Shen, Jian-Hui Fu, Shuang-Xing Hou
The present study aimed to investigate protein expression levels of intra‑ and extracranial atherosclerosis in rabbits following administration of a high‑fat diet. Rabbits were randomly divided into control (group A; n=9) and high‑fat diet (group B; n=9) groups. At week 12, tissues were sectioned from the common carotid artery (CCA) and middle cerebral artery (MCA). Pathological analysis was performed. Differential protein expression levels were examined by 2‑D gel electrophoresis (2‑DE) and mass spectrometry (MS) analysis and validated by western blotting...
June 28, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28672812/in-depth-proteomic-analysis-of-the-hippocampus-in-a-rat-model-after-cerebral-ischaemic-injury-and-repair-by-danhong-injection-dhi
#4
Yiran Cui, Xin Liu, Xianyu Li, Hongjun Yang
Stroke is the second most common cause of death worldwide. A systematic description and characterization of the strokes and the effects induced in the hippocampus have not been performed so far. Here, we analysed the protein expression in the hippocampus 24 h after cerebral ischaemic injury and repair. Drug intervention using Danhong injection (DHI), which has been reported to have good therapeutic effects in a clinical setting, was selected for our study of cerebral ischaemia repair in rat models. A larger proteome dataset and total 4091 unique proteins were confidently identified in three biological replicates by combining tissue extraction for rat hippocampus and LC-MS/MS analysis...
June 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28663071/outside-in-inside-out-proteomic-analysis-of-endothelial-stress-mediated-by-7-ketocholesterol
#5
Lívia Rosa-Fernandes, Luciana M F Maselli, Nair Y Maeda, Giuseppe Palmisano G, Sergio P Bydlowski
Oxysterols are cholesterol oxidation products formed through enzymatic or autoxidation mechanisms. 7-ketocholeterol (7KC) is one of most abundant oxysterols found in atherosclerotic lesions. Its role in atherosclerosis pathogenesis has been broadly studied in a variety of models. The arterial microenvironment is a multicellular dynamic compartment that, among other systemic factors, is continuously stimulated by 7KC. Endothelial cells have a key role on that environment, being in intimate contact with both the blood stream and the vessel wall, the site of disease origin...
June 26, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28656274/proteomics-of-acute-heart-failure-in-a-rat-post-myocardial-infarction-model
#6
Yichen Guo, Lianqun Cui, Shiliang Jiang, Airong Zhang, Shu Jiang
The aim of the present study was to identify the mechanisms underlying the development of post-myocardial infarction (post-MI) heart failure. The left anterior descending coronary artery of rats was occluded to mimic human ischemic heart disease. Linear Trap Quadropole OrbiTrap mass spectrometry was used to profile the expressions of energy metabolism‑associated and calcium‑binding proteins in the post‑MI and control groups. Using the online Protein Analysis Through Evolutionary Relationships classification system, 78 differentially expressed proteins were identified, including 50 downregulated proteins and 28 upregulated proteins in post‑MI group when compared with the control group...
August 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28642677/a-novel-workflow-combining-plaque-imaging-plaque-and-plasma-proteomics-identifies-biomarkers-of-human-coronary-atherosclerotic-plaque-disruption
#7
Regent Lee, Roman Fischer, Philip D Charles, David Adlam, Alessandro Valli, Katalin Di Gleria, Rajesh K Kharbanda, Robin P Choudhury, Charalambos Antoniades, Benedikt M Kessler, Keith M Channon
BACKGROUND: Atherosclerotic plaque rupture is the culprit event which underpins most acute vascular syndromes such as acute myocardial infarction. Novel biomarkers of plaque rupture could improve biological understanding and clinical management of patients presenting with possible acute vascular syndromes but such biomarker(s) remain elusive. Investigation of biomarkers in the context of de novo plaque rupture in humans is confounded by the inability to attribute the plaque rupture as the source of biomarker release, as plaque ruptures are typically associated with prompt down-stream events of myocardial necrosis and systemic inflammation...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28640320/molecular-signature-of-coronary-stent-thrombosis-oxidative-stress-and-innate-immunity-cells
#8
Judit Cubedo, Ana Blasco, Teresa Padro, Ilaria Ramaiola, Oriol Juan-Babot, Javier Goicolea, José Antonio Fernández-Díaz, Juan Francisco Oteo, Lina Badimon
The clinical impact of in-stent thrombosis is high because it is associated with high mortality and 20 % of the patients suffer a recurrent event within the two following years. The aim of this study was to characterise the morphologic and proteomic profile of in-stent thrombi (IST) in comparison to thrombi developed on native coronary arteries (CT) to identify a differential molecular signature. The study included 45 patients with ST-elevation-myocardial-infarction (STEMI) treated by primary-percutaneous-intervention and thrombus aspiration: 21 had IST and 24 had CT...
June 22, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28627688/danger-recognizing-proteins-%C3%AE-defensin-128-and-histatin-3-as-potential-biomarkers-of-recurrent-coronary-events
#9
Madankumar Ghatge, Ankit Sharma, Sangeeta Maity, Vijay V Kakkar, Rajani Kanth Vangala
Conventional risk factors have limited ability to predict recurrent events in subjects with first-time coronary artery disease (CAD). This aim of this study was to identify novel biomarkers using comparative global proteome analysis to improve the risk assessment for recurrent coronary events. We used samples from phase-I of the Indian Atherosclerosis Research Study (IARS), consisting of 2,332 subjects, of whom 772 were CAD-affected subjects, including 152 with recurrent events identified during a 5-year follow-up period...
June 19, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28624389/plasma-proteome-analysis-in-patients-with-pulmonary-arterial-hypertension-an-observational-cohort-study
#10
Christopher J Rhodes, John Wharton, Pavandeep Ghataorhe, Geoffrey Watson, Barbara Girerd, Luke S Howard, J Simon R Gibbs, Robin Condliffe, Charles A Elliot, David G Kiely, Gerald Simonneau, David Montani, Olivier Sitbon, Henning Gall, Ralph T Schermuly, H Ardeschir Ghofrani, Allan Lawrie, Marc Humbert, Martin R Wilkins
BACKGROUND: Idiopathic and heritable pulmonary arterial hypertension form a rare but molecularly heterogeneous disease group. We aimed to measure and validate differences in plasma concentrations of proteins that are associated with survival in patients with idiopathic or heritable pulmonary arterial hypertension to improve risk stratification. METHODS: In this observational cohort study, we enrolled patients with idiopathic or heritable pulmonary arterial hypertension from London (UK; cohorts 1 and 2), Giessen (Germany; cohort 3), and Paris (France; cohort 4)...
June 14, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28624387/aptamer-based-proteomic-profiling-for-prognostication-in-pulmonary-arterial-hypertension
#11
Evangelos Giannitsis, Matthias Mueller-Hennessen, Hugo A Katus
No abstract text is available yet for this article.
June 14, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28620701/chronic-cerebral-hypoperfusion-induced-synaptic-proteome-changes-in-the-rat-cerebral-cortex
#12
Katalin Völgyi, Péter Gulyássy, Mihail Ivilinov Todorov, Gina Puska, Kata Badics, Dávid Hlatky, Katalin Adrienna Kékesi, Gabriella Nyitrai, András Czurkó, László Drahos, Arpád Dobolyi
Chronic cerebral hypoperfusion (CCH) evokes mild cognitive impairment (MCI) and contributes to the progression of vascular dementia and Alzheimer's disease (AD). How CCH induces these neurodegenerative processes that may spread along the synaptic network and whether they are detectable at the synaptic proteome level of the cerebral cortex remains to be established. In the present study, we report the synaptic protein changes in the cerebral cortex after stepwise bilateral common carotid artery occlusion (BCCAO) induced CCH in the rat...
June 15, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28582578/proteomics-of-the-epicardial-fat-secretome-and-its-role-in-post-operative-atrial-fibrillation
#13
Alessandro Viviano, Xiaoke Yin, Anna Zampetaki, Marika Fava, Mark Gallagher, Manuel Mayr, Marjan Jahangiri
Aims: Post-operative atrial fibrillation (POAF) is a predictor of morbidity and mortality after cardiac surgery. Latent predisposing factors may reside in the epicardial adipose tissue (EAT) due to its anatomical position and high protein production rate. In order to explore a possible mechanistic link, we characterized proteins secreted by the EAT preceding the onset of POAF. Methods and results: Epicardial adipose tissue samples were collected from 76 consecutive patients with no history of AF undergoing coronary artery bypass surgery, 50 samples for proteomic analysis and 26 for gene expression studies, further divided according to development of POAF...
June 5, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28530744/proteomic-analysis-of-prognostic-plasma-biomarkers-in-peripheral-arterial-occlusive-disease
#14
Cheng-San Yang, Yu-Shan Wei, Han-Lin Tsai, Ian-Seng Cheong, Shing-Jyh Chang, Hsiu-Chuan Chou, Ying-Ray Lee, Hong-Lin Chan
Peripheral arterial occlusive disease (PAOD), one of the major manifestations of systemic atherosclerosis, causes intermittent claudication and rest pain. Patients with PAOD not only have reduced quality of life, but also have a substantial risk of cardiovascular morbidity and death. In this study, we adopted a proteomics-based approach using 2D-DIGE and MALDI-TOF MS to compare the differential plasma proteome between good and poor prognosis of PAOD. We identified 196 plasma proteins, which represent 42 unique gene products...
June 27, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28524624/pulmonary-arterial-hypertension-progress-in-understanding-the-disease-and-prioritizing-strategies-for-drug-development
#15
REVIEW
P Ghataorhe, C J Rhodes, L Harbaum, M Attard, J Wharton, M R Wilkins
Pulmonary arterial hypertension (PAH), at one time a largely overlooked disease, is now the subject of intense study in many academic and biotech groups. The availability of new treatments has increased awareness of the condition. This in turn has driven a change in the demographics of PAH, with an increase in the mean age at diagnosis. The diagnosis of PAH in more elderly patients has highlighted the need for careful phenotyping of patients and for further studies to understand how best to manage pulmonary hypertension associated with, for example, left heart disease...
May 19, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28452939/a-review-proteomics-in-retinal-artery-occlusion-retinal-vein-occlusion-diabetic-retinopathy-and-acquired-macular-disorders
#16
REVIEW
Lasse Jørgensen Cehofski, Bent Honoré, Henrik Vorum
Retinal artery occlusion (RAO), retinal vein occlusion (RVO), diabetic retinopathy (DR) and age-related macular degeneration (AMD) are frequent ocular diseases with potentially sight-threatening outcomes. In the present review we discuss major findings of proteomic studies of RAO, RVO, DR and AMD, including an overview of ocular proteome changes associated with anti-vascular endothelial growth factor (VEGF) treatments. Despite the severe outcomes of RAO, the proteome of the disease remains largely unstudied...
April 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28434814/novel-protein-biomarkers-associated-with-coronary-artery-disease-in-statin-treated-patients-with-familial-hypercholesterolemia
#17
Sven Bos, Michael Phillips, Gerald F Watts, Adrie J M Verhoeven, Eric J G Sijbrands, Natalie C Ward
BACKGROUND: Familial hypercholesterolemia (FH) is the most common and serious monogenic disorder of lipid metabolism. The incidence of coronary artery disease (CAD) varies among both treated and untreated FH patients. OBJECTIVE: The aim of the study was to utilize proteomics to identify novel protein biomarkers that differentiate genetically confirmed heterozygous patients with FH at high CAD risk from those at low CAD risk. METHODS: Sixty genetically confirmed FH patients were recruited and stratified into (1) asymptomatic FH with low atherosclerotic burden (FH, n = 20); (2) asymptomatic FH with high atherosclerotic burden (FH + Ca, n = 20); and (3) FH with previously confirmed symptomatic CAD (FH + CAD, n = 20)...
April 4, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28395021/tipifarnib-prevents-development-of-hypoxia-induced-pulmonary-hypertension
#18
Lucie Duluc, Blerina Ahmetaj-Shala, Jane Mitchell, Vahitha B Abdul-Salam, Abdul S Mahomed, Lulwah Aldabbous, Eduardo Oliver, Lucio Iannone, Olivier D Dubois, Elisabeth M Storck, Edward W Tate, Lan Zhao, Martin R Wilkins, Beata Wojciak-Stothard
Aims: RhoB plays a key role in the pathogenesis of hypoxia-induced pulmonary hypertension. Farnesylated RhoB promotes growth responses in cancer cells and we investigated whether inhibition of protein farnesylation will have a protective effect. Methods and results: The analysis of lung tissues from rodent models and pulmonary hypertensive patients showed increased levels of protein farnesylation. Oral farnesyltransferase inhibitor tipifarnib prevented development of hypoxia-induced pulmonary hypertension in mice...
March 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28392500/metabolism-and-proteomics-of-large-and-small-dense-ldl-in-combined-hyperlipidemia-effects-of-rosuvastatin
#19
Nuntakorn Thongtang, Margaret R Diffenderfer, Esther M M Ooi, P Hugh R Barrett, Scott M Turner, Ngoc-Anh Le, W Virgil Brown, Ernst J Schaefer
Small dense LDL (sdLDL) has been reported to be more atherogenic than large buoyant LDL (lbLDL). We examined the metabolism and protein composition of sdLDL and lbLDL in six subjects with combined hyperlipidemia on placebo and rosuvastatin 40 mg/day. ApoB-100 kinetics in triglyceride-rich lipoproteins (TRLs), lbLDL (density [d] = 1.019-1.044 g/ml), and sdLDL (d = 1.044-1.063 g/ml) were determined in the fed state by using stable isotope tracers, mass spectrometry, and compartmental modeling. Compared with placebo, rosuvastatin decreased LDL cholesterol and apoB-100 levels in TRL, lbLDL, and sdLDL by significantly increasing the fractional catabolic rate of apoB-100 (TRL, +45%; lbLDL, +131%; and sdLDL, +97%), without a change in production...
July 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28336332/how-to-use-and-integrate-bioinformatics-tools-to-compare-proteomic-data-from-distinct-conditions-a-tutorial-using-the-pathological-similarities-between-aortic-valve-stenosis-and-coronary-artery-disease-as-a-case-study
#20
Fábio Trindade, Rita Ferreira, Beatriz Magalhães, Adelino Leite-Moreira, Inês Falcão-Pires, Rui Vitorino
Nowadays we are surrounded by a plethora of bioinformatics tools, powerful enough to deal with the large amounts of data arising from proteomic studies, but whose application is sometimes hard to find. Therefore, we used a specific clinical problem - to discriminate pathophysiology and potential biomarkers between two similar cardiovascular diseases, aortic valve stenosis (AVS) and coronary artery disease (CAD) - to make a step-by-step guide through four bioinformatics tools: STRING, DisGeNET, Cytoscape and ClueGO...
March 21, 2017: Journal of Proteomics
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