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https://www.readbyqxmd.com/read/28550587/epicardial-adipose-tissue-is-associated-with-high-risk-plaque-feature-progression-in-non-culprit-lesions
#1
Yahang Tan, Jia Zhou, Ying Zhou, Xiaobo Yang, Jing Wang, Yundai Chen
Several studies have suggested a link between epicardial adipose tissue (EAT) volume and high-risk plaques (HRPs); however, little is known about the association between EAT volume and HRP progression in non-culprit lesions (NCLs). Therefore, we evaluated whether EAT can independently predict HRP characteristic progression in NCLs by coronary computed tomography angiography (CCTA). In this single-centre trial, we analysed 131 consecutive patients (median age 61 years, male 72.52%) undergoing CCTA with percutaneous coronary intervention (PCI) for culprit lesions...
May 26, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28531282/near-infrared-spectroscopy-derived-lipid-core-burden-index-predicts-adverse-cardiovascular-outcome-in-patients-with-coronary-artery-disease-during-long-term-follow-up
#2
Anne-Sophie Schuurman, Maxime Vroegindewey, Isabella Kardys, Rohit M Oemrawsingh, Jin M Cheng, Sanneke de Boer, Hector M Garcia-Garcia, Robert-Jan van Geuns, Evelyn S Regar, Joost Daemen, Nicolas M van Mieghem, Patrick W Serruys, Eric Boersma, K Martijn Akkerhuis
Aims: Near-infrared spectroscopy (NIRS) is able to quantify cholesterol within coronary arteries by the lipid core burden index (LCBI). We studied the prognostic value of NIRS-derived LCBI in patients with coronary artery disease (CAD) for adverse cardiac outcome during long-term follow-up. Methods and results: During 2009-2013, NIRS was performed in a non-culprit artery of 275 patients undergoing coronary angiography for acute coronary syndrome (ACS) or stable angina...
May 20, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28504113/prognosis-of-spontaneous-coronary-artery-dissection-treated-by-percutaneous-coronary-intervention-with-optical-coherence-tomography
#3
Tsuyoshi Nishiguchi, Atsushi Tanaka, Akira Taruya, Yuichi Ozaki, Mai Nakai, Ikuko Teraguchi, Shingo Ota, Akio Kuroi, Takeyoshi Kameyama, Takashi Yamano, Tomoyuki Yamaguchi, Yoshiki Matsuo, Yasushi Ino, Takashi Kubo, Takeshi Hozumi, Takashi Akasaka
BACKGROUND: Although about half of patients with spontaneous coronary artery dissection (SCAD) face ongoing necrosis, conservative therapy is recommended due to a high complication rate in angiography-guided percutaneous coronary intervention (PCI). The aim of this study was to investigate clinical outcomes of SCAD treated by optical coherence tomography (OCT)-guided PCI. METHODS: This study consisted of consecutive 306 patients with acute coronary syndrome (ACS) who underwent OCT-guided PCI...
May 11, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28500539/hybrid-pet-ct-and-pet-mri-imaging-of-vulnerable-coronary-plaque-and-myocardial-scar-tissue-in-acute-myocardial-infarction
#4
Stephanie Marchesseau, Aruni Seneviratna, A Therese Sjöholm, Daphne Liang Qin, Jamie X M Ho, Derek J Hausenloy, David W Townsend, A Mark Richards, John J Totman, Mark Y Y Chan
BACKGROUND: Following an acute coronary syndrome, combined CT and PET with (18)F-NaF can identify coronary atherosclerotic plaques that have ruptured or eroded. However, the processes behind (18)F-NaF uptake in vulnerable plaques remain unclear. METHODS AND RESULTS: Ten patients with STEMI were scanned after (18)F-NaF injection, for 75 minutes in a Siemens PET/MR scanner using delayed enhancement (LGE). They were then scanned in a Siemens PET/CT scanner for 10 minutes...
May 12, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28458601/characteristics-detected-on-computed-tomography-angiography-predict-coronary-artery-plaque-progression-in-non-culprit-lesions
#5
Yahang Tan, Jia Zhou, Ying Zhou, Xiaobo Yang, Junjie Yang, Yundai Chen
OBJECTIVE: This study sought to determine whether variables detected on coronary computed tomography angiography (CCTA) would predict plaque progression in non-culprit lesions (NCL). MATERIALS AND METHODS: In this single-center trial, we analyzed 103 consecutive patients who were undergoing CCTA and percutaneous coronary intervention (PCI) for culprit lesions. Follow-up CCTA was scheduled 12 months after the PCI, and all patients were followed for 3 years after their second CCTA examination...
May 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28456697/impact-of-plaque-rupture-detected-by-optical-coherence-tomography-on-transmural-extent-of-infarction-after-successful-stenting-in-st-segment-elevation-acute-myocardial-infarction
#6
Keisuke Satogami, Yasushi Ino, Takashi Kubo, Takashi Tanimoto, Makoto Orii, Yoshiki Matsuo, Shingo Ota, Tomoyuki Yamaguchi, Yasutsugu Shiono, Kunihiro Shimamura, Yosuke Katayama, Hiroshi Aoki, Tsuyoshi Nishiguchi, Yuichi Ozaki, Takashi Yamano, Takeyoshi Kameyama, Akio Kuroi, Hironori Kitabata, Atsushi Tanaka, Takeshi Hozumi, Takashi Akasaka
OBJECTIVES: The aim of the present study was to investigate the association between plaque rupture (PR) assessed by optical coherence tomography (OCT), and the transmural extent of infarction (TEI) assessed by contrast-enhanced cardiac magnetic resonance imaging (CE-CMR) in ST-segment elevation myocardial infarction (STEMI) patients after primary percutaneous coronary intervention (PCI). BACKGROUND: PR is associated with larger infarct size as assessed by cardiac enzymes in STEMI patients...
April 21, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28385306/detection-of-atherosclerotic-inflammation-by-68-ga-dotatate-pet-compared-to-18-f-fdg-pet-imaging
#7
Jason M Tarkin, Francis R Joshi, Nicholas R Evans, Mohammed M Chowdhury, Nichola L Figg, Aarti V Shah, Lakshi T Starks, Abel Martin-Garrido, Roido Manavaki, Emma Yu, Rhoda E Kuc, Luigi Grassi, Roman Kreuzhuber, Myrto A Kostadima, Mattia Frontini, Peter J Kirkpatrick, Patrick A Coughlin, Deepa Gopalan, Tim D Fryer, John R Buscombe, Ashley M Groves, Willem H Ouwehand, Martin R Bennett, Elizabeth A Warburton, Anthony P Davenport, James H F Rudd
BACKGROUND: Inflammation drives atherosclerotic plaque rupture. Although inflammation can be measured using fluorine-18-labeled fluorodeoxyglucose positron emission tomography ([(18)F]FDG PET), [(18)F]FDG lacks cell specificity, and coronary imaging is unreliable because of myocardial spillover. OBJECTIVES: This study tested the efficacy of gallium-68-labeled DOTATATE ((68)Ga-DOTATATE), a somatostatin receptor subtype-2 (SST2)-binding PET tracer, for imaging atherosclerotic inflammation...
April 11, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28366306/the-largpad-trial-phase-iia-evaluation-of-l-arginine-infusion-in-patients-with-peripheral-arterial-disease
#8
Vikram S Kashyap, Ryan O Lakin, Patricia Campos, Matthew Allemang, Ann Kim, Timur P Sarac, Alfred Hausladen, Jonathan S Stamler
OBJECTIVE: Endothelial function is improved by l-arginine (l-arg) supplementation in preclinical and clinical studies of mildly diseased vasculature; however, endothelial function and responsiveness to l-arg in severely diseased arteries is not known. Our objective was to evaluate the acute effects of catheter-directed l-arg delivery in patients with chronic lower extremity ischemia secondary to peripheral arterial disease. METHODS: The study enrolled 22 patients (45% male) with peripheral arterial disease (mean age, 62 years) requiring lower extremity angiography...
March 30, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28329036/predictive-value-of-plaque-morphology-assessed-by-frequency-domain-optical-coherence-tomography-for-impaired-microvascular-perfusion-after-elective-stent-implantation-the-intracoronary-electrocardiogram-study
#9
Hiroki Ikenaga, Satoshi Kurisu, Tsukasa Nakao, Shingo Kono, Yoji Sumimoto, Noriaki Watanabe, Takashi Shimonaga, Tadanao Higaki, Toshitaka Iwasaki, Naoya Mitsuba, Ken Ishibashi, Yoshihiro Dohi, Yukihiro Fukuda, Yasuki Kihara
Aims: This study was undertaken to assess the association between plaque features at culprit lesions assessed by frequency-domain optical coherence tomography (FD-OCT) and impaired microvascular perfusion estimated by intracoronary electrocardiogram (IcECG) after elective percutaneous coronary intervention (PCI). Furthermore, we investigated whether IcECG could predict future cardiac events. Methods and results: This study consisted of 84 patients who underwent both FD-OCT and IcECG during PCI...
March 7, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28325524/current-status-of-lipid-management-in-acute-coronary-syndrome
#10
REVIEW
Koichiro Fujisue, Kenichi Tsujita
The development of coronary revascularization has dramatically improved early cardiovascular outcomes in patients with acute coronary syndrome (ACS). However, patients who have experienced myocardial infarction (MI) are at high risk of recurrence of cardiovascular events compared with those who are healthy or have stable coronary artery disease. Acute coronary events induce further inflammatory responses and plaque vulnerability in either a coronary culprit or whole vessels. The majority of data have supported the importance of coronary risk management to prevent secondary events...
March 18, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28318137/plaque-erosion-delays-vascular-healing-after-drug-eluting-stent-implantation-in-patients-with-acute-coronary-syndrome-an-in-vivo-optical-coherence-tomography-study
#11
COMPARATIVE STUDY
Sining Hu, Chao Wang, Chunyang Zhe, Yinchun Zhu, Taishi Yonetsu, Haibo Jia, Jingbo Hou, Shaosong Zhang, Ik-Kyung Jang, Bo Yu
OBJECTIVES: To compare vascular healing after drug-eluting stent (DES) implantation between plaque rupture (PR) and plaque erosion (PE). BACKGROUND: Vascular response after stent implantation in patients with PR has been extensively studied. Little is known about vascular healing after stent implantation in PE. METHODS: Sixty-five ACS patients who received optical coherence tomography (OCT) imaging of the culprit lesions both before and after stent implantation at baseline as well as at 6 months were included in this study...
March 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28292859/-18-f-fluoride-and-18-f-fluorodeoxyglucose-positron-emission-tomography-after-transient-ischemic-attack-or-minor-ischemic-stroke-case-control-study
#12
COMPARATIVE STUDY
Alex T Vesey, William S A Jenkins, Agnese Irkle, Alastair Moss, Greg Sng, Rachael O Forsythe, Tim Clark, Gemma Roberts, Alison Fletcher, Christophe Lucatelli, James H F Rudd, Anthony P Davenport, Nicholas L Mills, Rustam Al-Shahi Salman, Martin Dennis, William N Whiteley, Edwin J R van Beek, Marc R Dweck, David E Newby
BACKGROUND: Combined positron emission tomography (PET) and computed tomography (CT) can assess both anatomy and biology of carotid atherosclerosis. We sought to assess whether (18)F-fluoride or (18)F-fluorodeoxyglucose can identify culprit and high-risk carotid plaque. METHODS AND RESULTS: We performed (18)F-fluoride and (18)F-fluorodeoxyglucose PET/CT in 26 patients after recent transient ischemic attack or minor ischemic stroke: 18 patients with culprit carotid stenosis awaiting carotid endarterectomy and 8 controls without culprit carotid atheroma...
March 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28288748/role-of-optical-coherence-tomography-in-managing-patients-with-st-elevation-myocardial-infarction
#13
Ashish Shah, Douglas J Ing
Stenting the culprit lesion in patients presenting with acute coronary syndrome (ACS) is the standard of care. Although plaque rupture on an atheromatous lesion is the most common underlying pathology, other mechanisms can also result in ACS presentation; some of which can be managed without stenting. Here we describe a case that was managed conservatively, after evaluating plaque erosion as the underlying mechanism and lack of obstructive lesion. This case highlights the importance of intracoronary imaging to assess the underlying mechanism in patients presenting with acute coronary syndrome...
March 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28283423/echolucency-of-the-carotid-artery-is-associated-with-short-term-plaque-progression-and-positive-remodeling-in-the-culprit-coronary-artery-in-ami-survivors
#14
Mika Futamata, Satoshi Matsuoka, Takuya Shimizu, Toru Yoshizaki, Jun-Ei Obata, Takamitsu Nakamura, Daisuke Fujioka, Yosuke Watanabe, Kazuto Nakamura, Kazuhiro Watanabe, Kiyotaka Kugiyama
BACKGROUND: Rapid plaque progression and positive remodeling are recognized as vulnerable coronary plaque characteristics. This study examined whether serial carotid ultrasonography might be of value for assessment of coronary plaque progression and positive remodeling, measured by serial intravascular ultrasound (IVUS), in survivors of acute myocardial infarction (AMI). METHODS: Thirty-nine patients with AMI had repeated examinations by IVUS of culprit coronary arteries and echolucency of the coronary artery on admission (1st test) and 6 months later (2nd test)...
March 7, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28279437/coronary-plaque-characteristics-in-hemodialysis-dependent-patients-as-assessed-by-optical%C3%A2-coherence-tomography
#15
Chee Yang Chin, Mitsuaki Matsumura, Akiko Maehara, Wenbin Zhang, Cheolmin Tetsumin Lee, Myong Hwa Yamamoto, Lei Song, Yasir Parviz, Nisha B Jhalani, Sumit Mohan, Lloyd E Ratner, David J Cohen, Ori Ben-Yehuda, Gregg W Stone, Richard A Shlofmitz, Tsunekazu Kakuta, Gary S Mintz, Ziad A Ali
Coronary arteries in patients with chronic kidney disease (CKD) have been shown to exhibit more extensive atherosclerosis and calcium. We aimed to assess characteristics of coronary plaque in hemodialysis (HD)-dependent patients using optical coherence tomography (OCT). This was a multicenter, retrospective study of 124 patients with stable angina who underwent OCT imaging. Sixty-two HD-dependent patients who underwent pre-intervention OCT for coronary artery disease were compared 1:1 with a cohort of patients without CKD, matched for age, diabetes mellitus, gender, and culprit vessel...
May 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28273416/%C3%AE-helix-mimetics-as-modulators-of-a%C3%AE-self-assembly
#16
Sunil Kumar, Andrew D Hamilton
A key molecular species in Alzheimer's disease (AD) is the Aβ42 alloform of Aβ peptide, which is dominant in the amyloid plaques deposited in the brains of AD patients. Recent studies have decisively demonstrated that the prefibrillar soluble oligomers are the neurotoxic culprits and are associated with the pathology of AD. Nascent Aβ42 is predominantly disordered but samples α-helical conformations covering residues 15-24 and 29-35 in the presence of micelles and structure-inducing solvents. In this report, a focused library of oligopyridylamide based α-helical mimetics was designed to target the central α-helix subdomain of Aβ (Aβ13-26)...
April 12, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28240675/impact-of-chronic-statin-therapy-on-clinical-presentation-and-underlying-lesion-morphology-in-patients-undergoing-percutaneous-intervention-an-adapt-des-ivus-substudy
#17
Tadayuki Kadohira, Gary S Mintz, Cristiano F Souza, Bernhard Witzenbichler, D Christopher Metzger, Michael J Rinaldi, Ernest L Mazzaferri, Peter L Duffy, Giora Weisz, Thomas D Stuckey, Bruce R Brodie, Aaron Crowley, Ajay J Kirtane, Gregg W Stone, Akiko Maehara
OBJECTIVE: Previous intravascular ultrasound (IVUS) studies have not established a relationship between chronic statin use and plaque morphology and composition in patients undergoing percutaneous coronary intervention (PCI). We sought to use pre-PCI grayscale and virtual histology (VH)-IVUS to assess plaque morphology and composition in patients treated with chronic statin therapy compared with patients who were not taking statins before admission and PCI. METHODS: In a prespecified substudy of the Assessment of Dual AntiPlatelet Therapy with Drug-Eluting Stents study, pre-PCI grayscale and VH-IVUS were performed in 780 patients with 916 culprit and 765 nonculprit lesions...
May 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28235809/management-and-outcome-of-patients-with-acute-coronary-syndrome-caused-by-plaque-rupture-versus-plaque-erosion-an%C3%A2-intravascular-optical-coherence-tomography-study
#18
Sining Hu, Yinchun Zhu, Yingying Zhang, Jiannan Dai, Lulu Li, Harold Dauerman, Tsunenari Soeda, Zhao Wang, Hang Lee, Chao Wang, Chunyang Zhe, Yan Wang, Gonghui Zheng, Shaosong Zhang, Haibo Jia, Bo Yu, Ik-Kyung Jang
BACKGROUND: Plaque rupture and erosion are the 2 most common mechanisms for acute coronary syndromes. However, the outcome of these 2 distinct pathologies in patients with acute coronary syndromes has never been studied. METHODS AND RESULTS: We retrospectively studied 141 patients with acute coronary syndromes who underwent optical coherence tomography (OCT) imaging of the culprit lesion prior to stenting from the Massachusetts General Hospital OCT Registry. Management (stent versus no stent), poststent OCT findings, and outcomes were compared...
February 24, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28191713/tissue-characterization-and-phenotype-classification-in-patients-presenting-with-acute-myocardial-infarction-insights-from-the-iwonder-study
#19
Cristiano F Souza, Akiko Maehara, Gary S Mintz, Mitsuaki Matsumura, Claudia M R Alves, Antonio Carlos Carvalho, Adriano Caixeta
OBJECTIVES: We sought to assess a new modality of radiofrequency intravascular ultrasound (IVUS) called iMAP-IVUS (Boston Scientific, Santa Clara, California) during the evaluation of patients presenting with high-risk acute coronary syndromes. BACKGROUND: There are limited data on plaque tissue characterization and phenotype classification using iMAP-IVUS. METHODS: In the iWonder study patients presenting with ST-elevation myocardial infarction (STEMI) or non-STEMI underwent three-vessel grayscale IVUS and iMAP-IVUS tissue characterization prior to percutaneous intervention...
February 13, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28180008/use-of-orbital-atherectomy-in-acute-myocardial-infarction-via-the-transradial-approach
#20
REVIEW
Samer Mowakeaa, Branden Snyder, Nikolaos Kakouros
Severe coronary artery calcifications pose an ongoing challenge when performing percutaneous coronary interventions, resulting in an increased likelihood of procedural complications. Orbital atherectomy (OA) has emerged as a promising technology that helps improve outcomes in this complex patient population. Its safety and efficacy are yet to be demonstrated in the setting of acute myocardial infarction. We present a case of a patient with acute ST-elevation myocardial infarction (STEMI) evaluated with emergent transradial coronary angiography...
December 2016: Interventional Medicine & Applied Science
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