Microarray analysis to identify differential molecular signatures in subjects with stable coronary artery disease on standard dosage regimens versus healthy controls
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE56885 | GEO | 2015/04/16
SECONDARY ACCESSION(S): PRJNA244863
REPOSITORIES: GEO
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Project description:In the present study, we used a top-down approach using microarray analysis to evaluate the novel molecular signatures that differentiate between subjects with stable coronary artery disease and normal healthy controls and which remain unresponsive to the standard therapies currently in clinical practice . Micro-array analysis revealed that inspite of concerted treatment efforts 513 genes were differentially expressed in our patient group vs healthy controls. To access the effect of ongoing therapies on stable CAD patients and to obtain gene signatures from these patients. We selected 4 angiographically proven stable CAD patients who were on medications for more than 3 months or more from Group-1 (n=100) and compared the data with 2 normal age and sex-matched healthy Controls (n=50) belonging to the same ethnic origin and socio-economic status. RNA extraction and hybridization was done using Affymetrix microarrays.
2015-04-16 | E-GEOD-56885 | biostudies-arrayexpress
Project description:Terminalia arjuna (Roxb.) Wight & Arn., a well known Traditional medicine an. popularly known as Arjuna, has a long antiquity of its role as a cardiac stimulant, and has been stipulated in the treatment of hypercholesterolemia, heart failure and atherosclerosis. The present study was carried out to access the effects of Terminalia arjuna as an adjuvant therapy in angiographically proven patients with stable coronary artery disease who were on conventional medications. The goal of the study was to establish whether Terminalia arjuna exerts beneficial effects in targetting disease signatures which remain unresponsive to the standard therapies currently employed in the clinics. The present study scientifically validates the therapeutic effects of this medicinal plant as an adjuvant therapy along with conventional drugs routinely used in the clinics for prevention and treatment of coronary artery disease.
2015-04-16 | GSE56886 | GEO
Project description:Terminalia arjuna (Roxb.) Wight & Arn., a well known Traditional medicine an. popularly known as Arjuna, has a long antiquity of its role as a cardiac stimulant, and has been stipulated in the treatment of hypercholesterolemia, heart failure and atherosclerosis. The present study was carried out to access the effects of Terminalia arjuna as an adjuvant therapy in angiographically proven patients with stable coronary artery disease who were on conventional medications. The goal of the study was to establish whether Terminalia arjuna exerts beneficial effects in targetting disease signatures which remain unresponsive to the standard therapies currently employed in the clinics. The present study scientifically validates the therapeutic effects of this medicinal plant as an adjuvant therapy along with conventional drugs routinely used in the clinics for prevention and treatment of coronary artery disease. To access the effect of T.arjuna, a placebo-controlled, double blind randomized study was carried out in 100 angiographically proven non-diabetic patients with coronary artery disease having disease more than 3 months prior to their enrollment and using any combination of cardiac-related medications including ASA, ACEIs, ARBs, β-blockers and statins (Trial Registration Number : REF/2013/03/004810). Out of total 100 patients, 50 patients were on drug A and 50 patients were on drug B for a total duration of 6 months (Follow-up at 3 and 6 months). Both Drug as well as placebo was given in the form of capsule (500mg) provided by The Himalaya Drug Company, Bangalore. Method of concealment was through coded identical containers. All the participants, investigator, outcome Assessor and data-entry operator were blinded during the whole study. Micro-array was performed in 2 randomly selected patients in each sub-group i.e. Terminalia arjuna or Placebo at 3 and 6 months respectively. RNA extraction and hybridization was carried out using Affymetrix microarrays. Differential expression of genes in T.arjuna-treated and Placebo groups was studied to understand the specificity, efficacy and mechanism of action of T.arjuna.
2015-04-16 | E-GEOD-56886 | biostudies-arrayexpress
Project description:Genomewide methylation profiles in coronary artery ectasia patients and matched healthy controls.
2017-12-21 | GSE87016 | GEO
Project description:Coronary artery disease (CAD) is the leading cause of human morbidity and mortality worldwide, underscoring the need to improve diagnostic strategies. Platelets play a major role, not only in the process of acute thrombosis during plaque rupture, but also in the formation of atherosclerosis itself. MicroRNAs are endogenous small non-coding RNAs that control gene expression and are expressed in a tissue and disease-specific manner. Therefore they have been proposed to be useful biomarkers. It remains unknown whether differences in miRNA expression levels in platelets can be found between patients with premature CAD and healthy controls. Methodology/Principal Findings In this case-control study we measured relative expression levels of platelet miRNAs using microarrays from 12 patients with premature CAD and 12 age- and sex-matched healthy controls. Six platelet microRNAs were significantly upregulated (miR340*, miR451, miR454*, miR545:9.1. miR615-5p and miR624*) and one miRNA (miR1280) was significantly downregulated in patients with CAD as compared to healthy controls. To validate these results, we measured the expression levels of these candidate miRNAs by qRT-PCR in platelets of individuals from two independent cohorts; validation cohort I consisted of 40 patients with premature CAD and 40 healthy controls and validation cohort II consisted of 27 patients with artery disease and 40 healthy relatives. MiR340* and miR624* were confirmed to be upregulated in patients with CAD as compared to healthy controls in both validation cohorts. Conclusion/Significance Two miRNAs in platelets are significantly upregulated in patients with CAD as compared to healthy controls.
2011-10-01 | GSE28858 | GEO
Project description:BACKGROUND:Chronic hepatitis B virus (HBV) infections are a global health problem. There is a need for therapeutic strategies blocking continuous infection of liver cells. The grass pollen allergy vaccine BM32 containing the preS domain of the large HBV surface protein (LHBs) as immunogenic carrier induced IgG antibodies in human subjects inhibiting HBV infection in vitro. Aim of this study was the quantification, epitope mapping and investigation of HBV genotype cross-reactivity of preS-specific antibodies in subjects treated with different dosage regimens of BM32 METHODS: Hundred twenty eight grass pollen allergic patients received in a double-blind, placebo-controlled trial five monthly injections of placebo (aluminum hydroxide, n= 34) or different courses of BM32 (2 placebo + 3 BM32, n= 33; 1 placebo + 4 BM32, n= 30; 5 BM32, n= 31). Recombinant Escherichia coli-expressed preS was purified. Overlapping peptides spanning preS and the receptor-binding sites from consensus sequences of genotypes A-H were synthesized and purified. Isotype (IgM, IgG, IgA, IgE) and IgG subclass (IgG1-IgG4) responses to preS and peptides were determined by ELISA at baseline, one and four months after the last injection. IgG1 and IgG4 subclass concentrations specific for preS and the receptor-binding site were measured by quantitative ELISA. FINDINGS:Five monthly injections induced the highest levels of preS-specific IgG consisting mainly of IgG1 and IgG4, with a sum of median preS-specific IgG1 and IgG4 concentrations of >135 ?g/ml reaching up to 1.8 mg/ml. More than 20% of preS-specific IgG was directed against the receptor-binding site. BM32-induced IgG cross-reacted with the receptor-binding domains from all eight HBV genotypes A-H. INTERPRETATION:BM32 induces high levels of IgG1 and IgG4 antibodies against the receptor binding sites of all eight HBV genotypes and hence might be suitable for therapeutic HBV vaccination. FUNDING:This study was supported by the PhD program IAI (KPW01212FW), by Viravaxx AG and by the Danube-ARC funded by the Government of Lower Austria. Rudolf Valenta is a recipient of a Megagrant of the Government of the Russian Federation, grant No 14.W03.31.0024.
| S-EPMC7502672 | biostudies-literature
Project description:Remission has become both the gold standard for clinical care and the end point for clinical trials for children with juvenile idiopathic arthritis (JIA). Using gene expression microarrays, we found that when remission induced by methotrexate (MTX) or MTX plus a TNF inhibitor (etanercept, Et) (MTX+Et) was compared with healthy controls, there were notable differences in gene expression patterns, demonstrating that remission is not a restoration of immunologic normalcy. Differences were detected in PBMC as well as in granulocytes. Total RNA was extracted from isolated PBMC and granulocytes from patients with polyarticular JIA and from healthy controls. Patients had achieved remission (clinical remission on medicine as defined by Wallace et al, Arthritis Rheum. 2005;52(11):3354-3562) using either MTX or MTX+Et.
2013-10-24 | E-GEOD-41831 | biostudies-arrayexpress
Project description:FFPE skin biopsy samples from patients with CTCL, dermatitis, or healthy controls were profiled by NanoString gene expression analysis A classifier was constructed that was able to identify mycosis fungoides (MF) samples from dermatitis and healthy controls.
2020-06-16 | GSE143382 | GEO
Project description:Coronary artery disease (CAD) is the leading cause of human morbidity and mortality worldwide, underscoring the need to improve diagnostic strategies. Platelets play a major role, not only in the process of acute thrombosis during plaque rupture, but also in the formation of atherosclerosis itself. MicroRNAs are endogenous small non-coding RNAs that control gene expression and are expressed in a tissue and disease-specific manner. Therefore they have been proposed to be useful biomarkers. It remains unknown whether differences in miRNA expression levels in platelets can be found between patients with premature CAD and healthy controls. Methodology/Principal Findings In this case-control study we measured relative expression levels of platelet miRNAs using microarrays from 12 patients with premature CAD and 12 age- and sex-matched healthy controls. Six platelet microRNAs were significantly upregulated (miR340*, miR451, miR454*, miR545:9.1. miR615-5p and miR624*) and one miRNA (miR1280) was significantly downregulated in patients with CAD as compared to healthy controls. To validate these results, we measured the expression levels of these candidate miRNAs by qRT-PCR in platelets of individuals from two independent cohorts; validation cohort I consisted of 40 patients with premature CAD and 40 healthy controls and validation cohort II consisted of 27 patients with artery disease and 40 healthy relatives. MiR340* and miR624* were confirmed to be upregulated in patients with CAD as compared to healthy controls in both validation cohorts. Conclusion/Significance Two miRNAs in platelets are significantly upregulated in patients with CAD as compared to healthy controls. miRNA array analysis of isolated platelets from subjects with premature coronary artery disease compared to healthy control subjects.
2011-09-30 | E-GEOD-28858 | biostudies-arrayexpress
Project description:Augmented renal clearance is commonly observed in septic patients and may result in insufficient ?-lactam serum concentrations. The aims of this study were to evaluate potential correlations between drug concentrations or total body clearance of ?-lactam antibiotics and measured creatinine clearance and to quantify the need for drug dosage adjustments in septic patients with different levels of augmented renal clearance. We reviewed 256 antibiotic measurements (512 drug concentrations) from a cohort of 215 critically ill patients who had a measured creatinine clearance of ?120 ml/min and who received therapeutic drug monitoring of meropenem, cefepime, ceftazidime, or piperacillin from October 2009 until December 2014 at Erasme Hospital. Population pharmacokinetic (PK) analysis of the data was performed using the Pmetrics software package for R. Fifty-five percent of drug concentrations showed insufficient ?-lactam serum concentrations to treat infections due to Pseudomonas aeruginosa There were significant, yet weak, correlations between measured creatinine clearance and trough concentrations of meropenem (r = -0.21, P = 0.01), trough concentrations of piperacillin (r = -0.28, P = 0.0071), concentrations at 50% of the dosage interval (r = -0.41, P < 0.0001), and total body clearance of piperacillin (r = 0.39, P = 0.0002). Measured creatinine clearance adequately explained changes in drug concentrations in population pharmacokinetic models for cefepime, ceftazidime, and meropenem but not for piperacillin. Therefore, specific PK modeling can predict certain ?-lactam concentrations based on renal function but not on absolute values of measured creatinine clearance, easily available for clinicians. Currently, routine therapeutic drug monitoring is required to adjust daily regimens in critically ill patients receiving standard dosing regimens.
| S-EPMC6125556 | biostudies-literature