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Jenkins A, Bhuva AN, Hughes AD, Manisty CH, Moon JC, Treibel TA. P432aortic stenosis. the role of aortoseptal angulation as a predictive factor for asymmetrical septal hypertrophy. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez118.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Scully PR, Morris E, Patel K, Saberwal B, Chadalavada S, Testanera G, Subhani S, Ferreira S, Hartman N, Mullen M, Elliott P, Fontana M, Hawkins PN, Moon JC, Menezes LJ. 237SUV Quantification in DPD Scintigraphy. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez145.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bhuva A, D"silva A, Torlasco C, Jones S, Nadarajan N, Van Zalen J, Boubertakh R, Chaturvedi N, Lloyd G, Sharma S, Moon JC, Hughes AD, Manisty CH. 201Training for a first-time marathon reverses vascular ageing. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez128.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ghonim S, Gatehouse PD, Giblin G, Keegan J, Smith GC, Mathews GC, Jenkins S, Alpendurada F, Dimopoulos K, Pennell DJ, Li W, Moon JC, Gatzoulis M, Babu-Narayan S. 277Can RV optimised native T1 mapping and ECV add clinical value in repaired tetralogy of Fallot? Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez121.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Torlasco C, Mollica C, Cassinerio E, Ruffino E, Milazzo A, Quattrocchi G, Sormani P, Abdel-Gadir A, Giannattasio C, Parati G, Cappellini MD, Moon JC, Pedrotti P. P426Left atrial size and function assessment through CMR in thalassemia major patients. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez118.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Schofield R, Ganeshan B, Fontana M, Nasis A, Castelletti S, Rosmini S, Treibel TA, Manisty C, Endozo R, Groves A, Moon JC. Texture analysis of cardiovascular magnetic resonance cine images differentiates aetiologies of left ventricular hypertrophy. Clin Radiol 2019; 74:140-149. [PMID: 30527518 DOI: 10.1016/j.crad.2018.09.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 09/26/2018] [Indexed: 10/28/2022]
Abstract
AIM To investigate whether unenhanced cardiovascular magnetic resonance (CMR) balanced steady state free precession (bSSFP) cine images could be analysed using textural analysis (TA) software to differentiate different aetiologies of disease causing increased myocardial wall thickness (left ventricular hypertrophy [LVH]) and indicate the severity of myocardial tissue abnormality. MATERIALS AND METHODS A mid short axis unenhanced cine frame of 216 patients comprising 50 cases of hypertrophic cardiomyopathy (HCM; predominantly Left ventricular outflow tract obstruction [LVOTO] subtype), 52 cases of cardiac amyloid (CA; predominantly AL: light chain subtype), 68 cases of aortic stenosis (AS), 15 hypertensive patients with LVH (HTN+LVH), and 31 healthy volunteers (HV) underwent TA of the CMR cine images (CMRTA) using TexRAD (TexRAD Ltd, Cambridge, UK). Among the HV, 16/31 were scanned twice to form a test-retest reproducibility cohort. CMRTA comprised a filtration-histogram technique to extract and quantify features using six parameters. RESULTS Test-retest analysis in the HV showed a medium filter (3 mm) was the most reproducible (intra-class correlation of 0.9 for kurtosis and skewness and 0.8 for mean and SD). Disease cohorts were statistically different (p<0.001) to HV for all parameters. Pairwise comparisons of CMRTA parameters showed kurtosis and skewness was consistently significant in ranking the degree of difference from HV (greatest to least): CA, HCM, LVH+HTN, AS (p<0.001). Similarly, mean, standard deviation, entropy, and mean positive pixel (MPP) were consistent in ranking degree of difference from HV: HCM, CA, AS and HTN+LVH. CONCLUSION Radiomic features of bSSFP CMR data sets derived using TA show promise in discriminating between the aetiologies of LVH.
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Eiros R, Treibel T, Scully P, Bhuva A, Patel K, Badiani S, Lopez B, Gonzalez A, Fontana M, Manistry C, Diez J, Moon JC. P6490Myocardial T2 in aortic stenosis: compensatory vasodilatation or subacute inflammation? Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Torlasco C, D'Silva A, Augusto J, Faini A, Knott K, Bhuva A, Benedetti G, Scully P, Jones S, Lobascio I, Parati G, Lloyd G, Manisty C, Moon JC, Sharma S. P3688Age matters: differences in cardiac response to training in young and middle aged first-time marathon runners. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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D'Silva A, Bhuva AN, Jones S, Van Zalen J, Bastiaenen R, Captur G, Gati S, Willis J, Liu S, Hughes A, Sharma R, Mainstay C, Lloyd G, Moon JC, Sharma S. P650Exercise-induced left ventricular trabeculation: real entity or fake news? Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Van Zalen JJ, D'Silva A, Badiani S, Bhuva A, Jones S, Torlasco C, Hughes AD, Manisty C, Sharma S, Moon JC, Lloyd G. P852Linking myocardial mechanical function to exercise performance: a cardiopulmonary stress echo study in first time London marathon participants. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bhuva A, Treibel TA, De Marvao A, Biffi C, Dawes T, Doumou G, Bai W, Oktay O, Jones S, Davies R, Chaturvedi N, Rueckert D, Hughes A, Moon JC, Manisty CH. P5470Septal hypertrophy in aortic stenosis and its regression after valve replacement is more plastic in males than females: insights from 3D machine learning approach. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sabah SA, Moon JC, Jenkins-Jones S, Morgan CL, Currie CJ, Wilkinson JM, Porter M, Captur G, Henckel J, Chaturvedi N, Kay P, Skinner JA, Hart AJ, Manisty C. The risk of cardiac failure following metal-on-metal hip arthroplasty. Bone Joint J 2018; 100-B:20-27. [PMID: 29305446 PMCID: PMC6424145 DOI: 10.1302/0301-620x.100b1.bjj-2017-1065.r1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
AIMS The aim of this study was to determine whether patients with metal-on-metal (MoM) arthroplasties of the hip have an increased risk of cardiac failure compared with those with alternative types of arthroplasties (non-MoM). PATIENTS AND METHODS A linkage study between the National Joint Registry, Hospital Episodes Statistics and records of the Office for National Statistics on deaths was undertaken. Patients who underwent elective total hip arthroplasty between January 2003 and December 2014 with no past history of cardiac failure were included and stratified as having either a MoM (n = 53 529) or a non-MoM (n = 482 247) arthroplasty. The primary outcome measure was the time to an admission to hospital for cardiac failure or death. Analysis was carried out using data from all patients and from those matched by propensity score. RESULTS The risk of cardiac failure was lower in the MoM cohort compared with the non-MoM cohort (adjusted hazard ratio (aHR) 0.901; 95% confidence interval (CI) 0.853 to 0.953). The risk of cardiac failure was similar following matching (aHR 0.909; 95% CI 0.838 to 0.987) and the findings were consistent in subgroup analysis. CONCLUSION The risk of cardiac failure following total hip arthroplasty was not increased in those in whom MoM implants were used, compared with those in whom other types of prostheses were used, in the first seven years after surgery. Cite this article: Bone Joint J 2018;100-B:20-7.
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Norrington K, Martinez-Naharro A, Kotecha T, Francis R, Hutt DF, Rezk T, Quarta C, Treibel TA, Whelan CJ, Knight D, Kellman P, Ruberg FL, Gillmore JD, Moon JC, Hawkins PN, Fontana M. 015 Clinical utility of T1 mapping in cardiac ATTR amyloidosis – diagnostic performance and prognostic capability. BRITISH HEART JOURNAL 2017. [DOI: 10.1136/heartjnl-2017-311399.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kim HC, Moon JC, Kim JY, Song K, Kim KH, Lee BM. Evaluation of Drought Tolerance using Anthesis-silking Interval in Maize. ACTA ACUST UNITED AC 2017. [DOI: 10.7740/kjcs.2016.62.1.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kim JY, Moon JC, Kim HC, Shin S, Song K, Kim KH, Lee BM. Identification of downy mildew resistance gene candidates by positional cloning in maize ( Zea mays subsp. mays; Poaceae). APPLICATIONS IN PLANT SCIENCES 2017; 5:apps1600132. [PMID: 28224059 PMCID: PMC5315382 DOI: 10.3732/apps.1600132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 12/21/2016] [Indexed: 06/06/2023]
Abstract
PREMISE OF THE STUDY Positional cloning in combination with phenotyping is a general approach to identify disease-resistance gene candidates in plants; however, it requires several time-consuming steps including population or fine mapping. Therefore, in the present study, we suggest a new combined strategy to improve the identification of disease-resistance gene candidates. METHODS AND RESULTS Downy mildew (DM)-resistant maize was selected from five cultivars using a spreader row technique. Positional cloning and bioinformatics tools were used to identify the DM-resistance quantitative trait locus marker (bnlg1702) and 47 protein-coding gene annotations. Eventually, five DM-resistance gene candidates, including bZIP34, Bak1, and Ppr, were identified by quantitative reverse-transcription PCR (RT-PCR) without fine mapping of the bnlg1702 locus. CONCLUSIONS The combined protocol with the spreader row technique, quantitative trait locus positional cloning, and quantitative RT-PCR was effective for identifying DM-resistance candidate genes. This cloning approach may be applied to other whole-genome-sequenced crops or resistance to other diseases.
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Song K, Kim HC, Shin S, Kim KH, Moon JC, Kim JY, Lee BM. Transcriptome Analysis of Flowering Time Genes under Drought Stress in Maize Leaves. FRONTIERS IN PLANT SCIENCE 2017; 8:267. [PMID: 28298916 PMCID: PMC5331056 DOI: 10.3389/fpls.2017.00267] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 02/14/2017] [Indexed: 05/20/2023]
Abstract
Flowering time is an important factor determining yield and seed quality in maize. A change in flowering time is a strategy used to survive abiotic stresses. Among abiotic stresses, drought can increase anthesis-silking intervals (ASI), resulting in negative effects on maize yield. We have analyzed the correlation between flowering time and drought stress using RNA-seq and bioinformatics tools. Our results identified a total of 619 genes and 126 transcripts whose expression was altered by drought stress in the maize B73 leaves under short-day condition. Among drought responsive genes, we also identified 20 genes involved in flowering times. Gene Ontology (GO) enrichment analysis was used to predict the functions of the drought-responsive genes and transcripts. GO categories related to flowering time included reproduction, flower development, pollen-pistil interaction, and post-embryonic development. Transcript levels of several genes that have previously been shown to affect flowering time, such as PRR37, transcription factor HY5, and CONSTANS, were significantly altered by drought conditions. Furthermore, we also identified several drought-responsive transcripts containing C2H2 zinc finger, CCCH, and NAC domains, which are frequently involved in transcriptional regulation and may thus have potential to alter gene expression programs to change maize flowering time. Overall, our results provide a genome-wide analysis of differentially expressed genes (DEGs), novel transcripts, and isoform variants expressed during the reproductive stage of maize plants subjected to drought stress and short-day condition. Further characterization of the drought-responsive transcripts identified in this study has the potential to advance our understanding of the mechanisms that regulate flowering time under drought stress.
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Hwang SG, Kim JJ, Lim SD, Park YC, Moon JC, Jang CS. Molecular dissection of Oryza sativa salt-induced RING Finger Protein 1 (OsSIRP1): possible involvement in the sensitivity response to salinity stress. PHYSIOLOGIA PLANTARUM 2016; 158:168-79. [PMID: 27118216 DOI: 10.1111/ppl.12459] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 03/15/2016] [Indexed: 05/20/2023]
Abstract
Ubiquitination-mediated protein degradation via Really Interesting New Gene (RING) E3 ligase plays an important role in plant responses to abiotic stress conditions. Many plant studies have found that RING proteins regulate the perception of various abiotic stresses and signal transduction. In this study, Oryza sativa salt-induced RING Finger Protein 1 (OsSIRP1) gene was selected randomly from 44 Oryza sativa RING Finger Proteins (OsRFPs) genes highly expressed in rice roots exposed to salinity stress. Transcript levels of OsSIRP1 in rice leaves after various stress treatments, including salt, heat, drought and hormone abscisic acid (ABA), were observed. Poly-ubiquitinated products of OsSIRP1 were investigated via an in vitro ubiquitination assay.35S:OsSIRP1-EYFP was distributed in the cytosol of untreated and salt-treated rice protoplasts. Heterogeneous overexpression of OsSIRP1 in Arabidopsis reduced tolerance for salinity stress during seed germination and root growth. Our findings indicate that OsSIRP1 acts as a negative regulator of salinity stress tolerance mediated by the ubiquitin 26S proteasome system.
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Hwang SG, Kim JH, Moon JC, Jang CS. Chloroplast markers for detecting rice grain-derived food ingredients in commercial mixed-flour products. Genes Genomics 2015. [DOI: 10.1007/s13258-015-0335-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Treibel TA, Fontana M, Maestrini V, Castelletti S, Rosmini S, Simpson J, Nasis A, Bulluck H, Abdel-Gadir A, White SK, Manisty C, Kellman P, Schelbert EB, Robson MD, Piechnik SK, Moon JC. 29 Synthetic ECV – simplifying ECV quantification by deriving haematocrit from T1 blood. BRITISH HEART JOURNAL 2015. [DOI: 10.1136/heartjnl-2015-307845.29] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Park S, Moon JC, Park YC, Kim JH, Kim DS, Jang CS. Molecular dissection of the response of a rice leucine-rich repeat receptor-like kinase (LRR-RLK) gene to abiotic stresses. JOURNAL OF PLANT PHYSIOLOGY 2014; 171:1645-53. [PMID: 25173451 DOI: 10.1016/j.jplph.2014.08.002] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 08/07/2014] [Accepted: 08/07/2014] [Indexed: 05/26/2023]
Abstract
Leucine-rich repeat (LRR) receptor-like kinase (RLK) proteins play key roles in a variety of biological pathways. In a previous study, we analyzed the members of the rice LRR-RLK gene family using in silico analysis. A total of 23 LRR-RLK genes were selected based on the expression patterns of a genome-wide dataset of microarrays. The Oryza sativa gamma-ray induced LRR-RLK1 (OsGIRL1) gene was highly induced by gamma irradiation. Therefore, we studied its expression pattern in response to various different abiotic and phytohormone treatments. OsGIRL1 was induced on exposure to abiotic stresses such as salt, osmotic, and heat, salicylic acid (SA), and abscisic acid (ABA), but exhibited downregulation in response to jasmonic acid (JA) treatment. The OsGIRL1 protein was clearly localized at the plasma membrane. The truncated proteins harboring juxtamembrane and kinase domains (or only harboring a kinase domain) exhibited strong autophosphorylation. The biological function of OsGIRL1 was investigated via heterologous overexpression of this gene in Arabidopsis plants subjected to gamma-ray irradiation, salt stress, osmotic stress, and heat stress. A hypersensitive response was observed in response to salt stress and heat stress, whereas a hyposensitive response was observed in response to gamma-ray treatment and osmotic stress. These results provide critical insights into the molecular functions of the rice LRR-RLK genes as receptors of external signals.
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Reyes-Hernández BJ, Srivastava AC, Ugartechea-Chirino Y, Shishkova S, Ramos-Parra PA, Lira-Ruan V, Díaz de la Garza RI, Dong G, Moon JC, Blancaflor EB, Dubrovsky JG. The root indeterminacy-to-determinacy developmental switch is operated through a folate-dependent pathway in Arabidopsis thaliana. THE NEW PHYTOLOGIST 2014; 202:1223-1236. [PMID: 24635769 DOI: 10.1111/nph.12757] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 02/02/2014] [Indexed: 05/02/2023]
Abstract
Roots have both indeterminate and determinate developmental programs. The latter is preceded by the former. It is not well understood how the indeterminacy-to-determinacy switch (IDS) is regulated. We isolated a moots koom2 (mko2; 'short root' in Mayan) Arabidopsis thaliana mutant with determinate primary root growth and analyzed the root apical meristem (RAM) behavior using various marker lines. Deep sequencing and genetic and pharmacological complementation permitted the identification of a point mutation in the FOLYLPOLYGLUTAMATE SYNTHETASE1 (FPGS1) gene responsible for the mko2 phenotype. Wild-type FPGS1 is required to maintain the IDS in the 'off' state. When FPGS1 function is compromised, the IDS is turned on and the RAM becomes completely consumed. The polyglutamate-dependent pathway of the IDS involves activation of the quiescent center independently of auxin gradients and regulatory modules participating in RAM maintenance (WUSCHEL-RELATED HOMEOBOX5 (WOX5), PLETHORA, and SCARECROW (SCR)). The mko2 mutation causes drastic changes in folate metabolism and also affects lateral root primordium morphogenesis but not initiation. We identified a metabolism-dependent pathway involved in the IDS in roots. We suggest that the root IDS represents a specific developmental pathway that regulates RAM behaviour and is a different level of regulation in addition to RAM maintenance.
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Treibel TA, White SK, Moon JC. Myocardial Tissue Characterization: Histological and Pathophysiological Correlation. CURRENT CARDIOVASCULAR IMAGING REPORTS 2014; 7:9254. [PMID: 25258658 PMCID: PMC4169521 DOI: 10.1007/s12410-013-9254-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Cardiovascular magnetic resonance imaging (CMR) has become the gold standard not only for cardiac volume and function quantification, but for a key unique strength: non-invasive myocardial tissue characterization. Several different techniques, separately or in combination, can detect and quantify early and established myocardial pathological processes permitting better diagnosis, prognostication and tracking of therapy. The authors will focus on the histological and pathophysiological evidence of these imaging parameters in the characterization of edema, infarction, scar and fibrosis. In addition to laying out the strengths and weaknesses of each modality, the reader will be introduced to rapid developments in T1 and T2 mapping as well as the use of contrast-derived extracellular volume for quantification of diffuse fibrosis.
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Miller CA, Naish J, Bishop P, Coutts G, Clark D, Zhou S, Ray SG, Yonan N, Williams SG, Flett AS, Moon JC, Parker GJM, Schmitt M. 083 HISTOLOGICAL VALIDATION OF DYNAMIC-EQUILIBRIUM CARDIOVASCULAR MAGNETIC RESONANCE FOR THE ASSESSMENT OF MYOCARDIAL EXTRACELLULAR VOLUME. BRITISH HEART JOURNAL 2013. [DOI: 10.1136/heartjnl-2013-304019.83] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Captur G, Muthurangu V, Flett AS, Wilson R, Barison A, Anderson S, Cook C, Sado DM, McKenna WJ, Mohun TJ, Elliott PM, Moon JC. 1082From Tuscan Trabeculae to Florentine Fractals – A Novel
Approach to Quantification by CMR. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet070g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lim SD, Hwang JG, Jung CG, Hwang SG, Moon JC, Jang CS. Comprehensive analysis of the rice RING E3 ligase family reveals their functional diversity in response to abiotic stress. DNA Res 2013; 20:299-314. [PMID: 23571674 PMCID: PMC3686435 DOI: 10.1093/dnares/dst011] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
A large number of really interesting new gene (RING) E3 ligases contribute to the post-translational modification of target proteins during plant responses to environmental stresses. However, the physical interactome of RING E3 ligases in rice remains largely unknown. Here, we evaluated the expression patterns of 47 Oryza sativa RING finger protein (OsRFP) genes in response to abiotic stresses via semi-quantitative reverse transcription polymerase chain reaction (RT-PCR) and in silico analysis. Subsequently, molecular dissection of nine OsRFPs was performed by the examination of their E3 ubiquitin ligase activity, subcellular localization, and physical interaction with target proteins. Most of the OsRFPs examined possessed E3 ligase activity and showed diverse subcellular localization. Yeast two-hybrid analysis was then employed to construct a physical interaction map of seven OsRFPs with their 120 interacting proteins. The results indicated that these OsRFPs required dynamic translocation and partitioning for their cellular activation. Heterogeneous overexpression of each of the OsRFP genes in Arabidopsis suggested that they have functionally diverse responses to abiotic stresses, which may have been acquired during evolution. This comprehensive study provides insights into the biological functions of OsRFPs, which may be useful in understanding how rice plants adapt to unfavourable environmental conditions.
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