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Cardiac cobalt

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https://www.readbyqxmd.com/read/29772252/sulfiredoxin-1-enhances-cardiac-progenitor-cell-survival-against-oxidative-stress-via-the-upregulation-of-the-erk-nrf2-signal-pathway
#1
Xiuchun Li, Pan He, Xiaoliang Wang, Shuning Zhang, Neil Devejian, Edward Bennett, Chuanxi Cai
Cardiac stem/progenitor cells (CPCs) have recently emerged as a potentially transformative regenerative medicine to repair the infarcted heart. However, the limited survival of donor cells is one of the major challenges for CPC therapy. Our recent research effort on preconditioning human CPCs (hCPCs) with cobalt protoporphyrin (CoPP) indicated that sulfiredoxin-1 (SRXN1) is upregulated upon preconditioning aldehyde dehydrogenase bright hCPCs (ALDHbr -hCPCs) with CoPP. Further studies demonstrated that overexpressing SRXN1 enhanced the survival capacity for ALDHbr -hCPCs...
May 14, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29760296/hydroxytyrosol-and-olive-leaf-extract-exert-cardioprotective-effects-by-inhibiting-grp78-and-chop-expression
#2
Lixing Wu, Yuyu Xu, Zhijian Yang, Qing Feng
Myocardial infarction triggers massive biochemical changes, even cardiac cell death. Endoplasmic reticulum stress is involved in the pathology of myocardial infarction-mediated apoptosis. In the present study, myocardial cell line H9c2 cells were treated with cobalt chloride (CoCl2 ) to induce hypoxia. Isoproterenol was used for two successive days to induce myocardial infarction in SD rats. The cardioprotective effect of olive leaf extract (OLE) and its main constituent hydroxytyrosol and the underlying mechanisms were evaluated...
November 1, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/29755568/exosomes-secreted-by-normoxic-and-hypoxic-cardiosphere-derived-cells-have-anti-apoptotic-effect
#3
Helia Namazi, Iman Namazi, Parisa Ghiasi, Hassan Ansari, Sarah Rajabi, Ensiyeh Hajizadeh-Saffar, Nasser Aghdami, Elham Mohit
Cardiosphere-derived cells (CDCs) have emerged as one of the most promising stem cell types for cardiac protection and repair. Exosomes are required for the regenerative effects of human CDCs and mimic the cardioprotective benefits of CDCs such as anti-apoptotic effect in animal myocardial infarction (MI) models. Here we aimed to investigate the anti-apoptotic effect of the hypoxic and normoxic human CDCs-derived exosomes on induced apoptosis in human embryonic stem cell-derived cardiomyocytes (hESC-CMs). In this study, CDCs were cultured under normoxic (18% O2 ) and hypoxic (1% O2 ) conditions and CDC-exosomes were isolated from conditioned media by differential ultracentrifugation...
2018: Iranian Journal of Pharmaceutical Research: IJPR
https://www.readbyqxmd.com/read/29717283/utility-of-ischemia-modified-albumin-as-an-early-marker-for-diagnosis-of-acute-coronary-syndrome
#4
Bijaya Mishra, Sunil Pandey, Surya Raj Niraula, Bijendra Kumar Rai, Prahlad Karki, Nirmal Baral, Madhab Lamsal
BACKGROUND: The diagnosis of acute coronary syndrome remains challenging, as cardiac troponins and creatine kinase-MB do not detect myocardial ischemia. Ischemia modified albumin is biomarker positive within 6-10 minutes following ischemic onset, where oxygen free radicals leads to reduction in binding capacity of human serum albumin to transitional metal-cobalt. The objective of this study was to compare ischemia modified albumin between acute coronary syndrome patients and healthy controls, and evaluate diagnostic performance of ischemia modified albumin compared to cardiac troponins, creatine kinase-MB and electrocardiogram in acute coronary syndrome patients...
March 13, 2018: Journal of Nepal Health Research Council
https://www.readbyqxmd.com/read/29698302/is-there-a-cardiotoxicity-associated-with-metallic-head-hip-prostheses-a-cohort-study-in-the-french-national-health-insurance-databases
#5
Marion Lassalle, Sandrine Colas, Annie Rudnichi, Mahmoud Zureik, Rosemary Dray-Spira
BACKGROUND: There are four distinguishable types of THA devices in wide use, as defined by the femoral and acetabular bearing surfaces: metal-on-polyethylene (MoP), ceramic-on-polyethylene (CoP), metal-on-metal (MoM), and ceramic-on-ceramic (CoC). Metallic head THAs (MoP and MoM) can potentially induce cardiac toxicity because cobalt species, generated at the head-neck trunnion, and in the case of MoM devices, at the articular surface as well, can be absorbed systemically. However, studies have provided inconsistent results...
April 23, 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29691575/-protective-effects-of-endogenous-carbon-monoxide-against-myocardial-ischemia-reperfusion-injury-in-rats
#6
Zhen Zhou, Shuang Ma, Jie Liu, Qiao-Rong Ji, Cheng-Zhu Cao, Xiao-Na Li, Feng Tang, Wei Zhang
The present study is aimed to explore the effects of endogenous carbon monoxide on the ischemia-reperfusion in rats. Wistar rats were intraperitoneally injected with protoporphyrin cobalt chloride (CoPP, an endogenous carbon monoxide agonist, 5 mg/kg), zinc protoporphyrin (ZnPP, an endogenous carbon monoxide inhibitor, 5 mg/kg) or saline. Twenty-four hours after injection, the myocardial ischemia-reperfusion model was made by Langendorff isolated cardiac perfusion system, and cardiac function parameters were collected...
April 25, 2018: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/29519378/5-year-outcome-following-randomized-treatment-of-all-comers-with-zotarolimus-eluting-resolute-integrity-and-everolimus-eluting-promus-element-coronary-stents-final-report-of-the-dutch-peers-twente-ii-trial
#7
Paolo Zocca, Marlies M Kok, Kenneth Tandjung, Peter W Danse, Gillian A J Jessurun, Raymond W M Hautvast, K Gert van Houwelingen, Martin G Stoel, Alexander R Schramm, R Melvyn Tjon Joe Gin, Frits H A F de Man, Marc Hartmann, J Hans W Louwerenburg, Gerard C M Linssen, Marije M Löwik, Carine J M Doggen, Clemens von Birgelen
OBJECTIVES: The study sought to evaluate for the first time the 5-year outcomes after treating an all-comers population with newer-generation cobalt chromium-based Resolute Integrity zotarolimus-eluting stents (ZES) (Medtronic, Santa Rosa, California) versus platinum chromium-based PROMUS Element everolimus eluting stents (EES) (Boston Scientific, Natick, Massachusetts). BACKGROUND: The DUTCH PEERS (TWENTE II) (DUrable polymer-based sTent CHallenge of Promus ElemEnt versus ReSolute integrity: TWENTE II) trial is a randomized, multicenter, single-blinded, investigator-initiated all-comers trial that found at its main analysis similar 1-year safety and efficacy for both drug-eluting stents...
March 12, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29484580/five-year-clinical-outcomes-of-everolimus-eluting-stents-from-the-post-marketing-study-of-cocr-ees-xience-v-promus-in-japan
#8
Jiro Aoki, Ken Kozuma, Masaki Awata, Mamoru Nanasato, Nobuo Shiode, Kengo Tanabe, Junichi Yamaguchi, Hajime Kusano, Hong Nie, Takeshi Kimura
The Cobalt Chromium Everolimus-Eluting Stent (CoCr-EES) Post Marketing Surveillance (PMS) Japan study is a prospective multicenter registry designed to evaluate the safety and efficacy of XIENCE V/PROMUS everolimus-eluting stents in routine clinical practice at 47 centers representative of the clinical environment in Japan. We enrolled 2010 consecutive patients (2649 lesions) who underwent percutaneous coronary intervention using CoCr-EES. Clinical outcomes were evaluated through 5 years. Mean age was 68.8 years, 41...
February 26, 2018: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/29413102/synchrotron-analysis-of-human-organ-tissue-exposed-to-implant-material
#9
Ilona Swiatkowska, J Fred W Mosselmans, Tina Geraki, Cody C Wyles, Joseph J Maleszewski, Johann Henckel, Barry Sampson, Dominic B Potter, Ibtisam Osman, Robert T Trousdale, Alister J Hart
BACKGROUND: Orthopaedic implants made of cobalt-chromium alloy undergo wear and corrosion that can lead to deposition of cobalt and chromium in vital organs. Elevated cardiac tissue cobalt levels are associated with myocardial injury while chromium is a well-established genotoxin. Though metal composition of tissues surrounding hip implants has been established, few investigators attempted to characterize the metal deposits in systemic tissues of total joint arthroplasty patients. METHODS: We report the first use of micro-X-ray fluorescence coupled with micro-X-ray absorption spectroscopy to probe distribution and chemical form of cobalt, chromium and titanium in postmortem samples of splenic, hepatic and cardiac tissue of patients with metal-on-polyethylene hip implants (n = 5)...
March 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29322619/randomized-comparison-of-novel-biodegradable-polymer-and-durable-polymer-coated-cobalt-chromium-sirolimus-eluting-stents-three-year-outcomes-of-the-i-love-it-2-trial
#10
Lei Song, Jing Li, Changdong Guan, Quanmin Jing, Shuzheng Lu, Lixia Yang, Kai Xu, Yuejin Yang, Bo Xu, Yaling Han
OBJECTIVES: We aimed to compare the long-term outcomes of the novel biodegradable polymer cobalt-chromium sirolimus-eluting stent (BP-SES) versus the durable polymer sirolimus-eluting stent (DP-SES) in the I-LOVE-IT2 trial. BACKGROUNDS: Comparisons of the long-term safety and efficiency of the BP-DES versus the DP-DES are limited. METHODS: A total of 2,737 patients eligible for coronary stenting were randomized to the BP-SES or DP-SES group at a 2:1 ratio...
February 15, 2018: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29305447/metal-on-metal-total-hip-arthroplasty-is-not-associated-with-cardiac-disease
#11
L H Goodnough, A Bala, J Huddleston, S B Goodman, W J Maloney, D F Amanatullah
AIMS: Many case reports and small studies have suggested that cobalt ions are a potential cause of cardiac complications, specifically cardiomyopathy, after metal-on-metal (MoM) total hip arthroplasty (THA). The impact of metal ions on the incidence of cardiac disease after MoM THA has not been evaluated in large studies. The aim of this study was to compare the rate of onset of new cardiac symptoms in patients who have undergone MoM THA with those who have undergone metal-on-polyethylene (MoP) THA...
January 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29286554/effect-of-intravenous-administration-of-cobalt-chloride-to-horses-on-clinical-and-hemodynamic-variables
#12
T A Burns, K A Dembek, A Kamr, S B Dooley, L K Dunbar, T K Aarnes, L S Bednarski, C O'Brien, J Lakritz, B Byrum, A Wade, R Farmer, S Tan, R E Toribio
BACKGROUND: Cobalt chloride (CoCl2 ) is administered to racehorses to enhance performance. The purpose of this study was to evaluate the clinical, cardiovascular, and endocrine effects of parenterally administered CoCl2 . OBJECTIVES: To describe the effects of weekly intravenous doses of CoCl2 on Standardbred horses. ANIMALS: Five, healthy Standardbred mares. METHODS: Prospective, randomized, experimental dose-escalation pilot...
January 2018: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/29276147/evaluation-of-cobalt-and-chromium-levels-following-implantation-of-cobalt-chromium-coronary-stents-a-pilot-study
#13
Pietro Di Santo, Pouya Motazedian, Richard G Jung, Trevor Simard, F Daniel Ramirez, Aun-Yeong Chong, Christopher Glover, Benjamin Hibbert, Girish Dwivedi
BACKGROUND: Large increases in myocardial trace elements may adversely affect metabolism and become detrimental to cardiac function. Percutaneous coronary intervention (PCI) allows for the revascularisation of obstructive coronary artery disease using drug-eluting stents. These stents are comprised of a metallic stent backbone covered in an engineered polymer which delivers a drug over a prescribed period to the vessel wall. Given the potential implications of trace metal accumulation within the myocardium, our goal is to determine if metallic coronary stents are able to cause detectable elevations in serum cobalt and/or chromium levels...
December 14, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29275553/-application-of-ischemia-modified-albumin-for-acute-ischemic-heart-disease-in-forensic-science
#14
P Wang, Z L Zhu, N Zhu, H Yu, Q Yue, X L Wang, C M Feng, C L Wang, G H Zhang
OBJECTIVES: To explore the application value and forensic significance of ischemia modified albumin (IMA) in pericardial fluid to diagnose sudden cardiac death. METHODS: IMA level in pericardial fluid was detected in acute ischemic heart disease group ( n =36), acute myocardial infarction group ( n =6), cardiomyopathy group ( n =4) and control group ( n =15) by albumin cobalt binding method. The levels of IMA were compared among these groups...
October 2017: Fa Yi Xue za Zhi
https://www.readbyqxmd.com/read/29235306/comparison-of-everolimus-eluting-bioresorbable-vascular-scaffolds-and-metallic-stents-three-year-clinical-outcomes-from-the-absorb-china-randomised-trial
#15
Bo Xu, Yuejin Yang, Yaling Han, Yong Huo, Lefeng Wang, Xiangqian Qi, Jifu Li, Yundai Chen, Hai-Chien Kuo, Shih-Wa Ying, Wai-Fung Cheong, Yunlong Zhang, Xiaolu Su, Jeffery Popma, Runlin Gao, Gregg Stone
Aims: Absorb bioresorbable vascular scaffolds (BVS) and XIENCE cobalt-chromium everolimus-eluting stents (CoCr-EES) had comparable angiographic and clinical outcomes up to one year in patients enrolled in the ABSORB China randomised trial. Whether these favourable results with BVS continue beyond one year up to three years is unknown. In this study we sought to analyse the outcomes from the trial up to three-year follow-up. Methods and results: ABSORB China was a prospective, open-label, multicentre trial in which 480 patients with one or two native coronary artery lesions were randomised 1:1 to BVS (N=241) vs...
October 22, 2017: EuroIntervention
https://www.readbyqxmd.com/read/29217001/long-term-safety-and-efficacy-of-platinum-chromium-everolimus-eluting-stents-in-coronary-artery-disease-5-year-results-from-the-platinum-trial
#16
Christopher R Kelly, Paul S Teirstein, Ian T Meredith, Bruno Farah, Christophe L Dubois, Robert L Feldman, Joseph Dens, Nobuhisa Hagiwara, Abram Rabinowitz, Didier Carrié, Vincent Pompili, Alain Bouchard, Shigeru Saito, Dominic J Allocco, Keith D Dawkins, Gregg W Stone
OBJECTIVES: The authors sought to evaluate the final 5-year safety and effectiveness of the platinum-chromium everolimus-eluting stent (PtCr-EES) in the randomized trial, as well as in 2 single-arm substudies that evaluated PtCr-EES in small vessels (diameter <2.5 mm; n = 94) and long lesions (24 to 34 mm; n = 102). BACKGROUND: In the multicenter, randomized PLATINUM (PLATINUM Clinical Trial to Assess the PROMUS Element Stent System for Treatment of De Novo Coronary Artery Lesions), the PtCr-EES was noninferior to the cobalt-chromium everolimus-eluting stent (CoCr-EES) at 1 year in 1,530 patients undergoing percutaneous coronary intervention...
December 11, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29204485/arthroprosthetic-cobaltism-associated-with-cardiomyopathy
#17
Ryan S Charette, Alexander L Neuwirth, Charles L Nelson
Systemic cobaltism related to metal-on-metal total hip arthroplasty has been published in case reports and series with effects on the cardiac, neurologic, endocrine, and immunologic systems. This case report presents a 46-year-old male who underwent bilateral metal-on-metal total hip arthroplasty and subsequently developed cardiomyopathy requiring left ventricular assist device implantation. Intervention with bilateral revision to non-cobalt-containing implants resulted in improved cardiac function. This case report will alert clinicians to the presentation of this rare but devastating complication while also displaying improvement following revision total hip arthroplasty...
December 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/29192951/first-in-man-study-of-dedicated-bifurcation-cobalt-chromium-sirolimus-eluting-stent-bioss-lim-c%C3%A2-three-month-results
#18
Robert J Gil, Jacek Bil, Adam Kern, Tomasz Pawłowski
BACKGROUND: The optimal approach to coronary bifurcation treatment by percutaneous coronary intervention (PCI) is still a subject of debate, and dedicated bifurcation stents are one of the proposed solutions. AIM: The aim of this report was to assess the effectiveness and safety profile of a new dedicated bifurcation stent - sirolimus-eluting BiOSS LIM C® (Balton, Poland) at the first three months of a 12-month registry. METHODS: This is a two-centre registry, which enrolled patients with non-ST elevation acute coronary syndrome (NSTE-ACS) and stable angina...
2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29188590/characteristics-of-cobalt-related-cardiomyopathy-in-metal-hip-implant-patients-an-evaluation-of-15-published-reports
#19
REVIEW
Ernest S Fung, Andrew Monnot, Michael Kovochich, Kenneth M Unice, Brooke E Tvermoes, David Galbraith, Brent L Finley, Dennis J Paustenbach
Over 300,000 hip replacements occurred in the USA in 2010, and the frequency is likely increasing annually. Blood Cobalt (Co) concentrations in patients with well-functioning cobalt-chromium (Co-Cr) hip implants are usually elevated above background concentrations relative to the general population. Excessive Co exposure, in rare cases, can result in cardiomyopathy. The purpose of this review was to identify cases of cardiomyopathy in metal-containing hip implant patients and to evaluate the possible cause of each patient's cardiomyopathy...
November 29, 2017: Cardiovascular Toxicology
https://www.readbyqxmd.com/read/29166699/comparison-of-clinical-outcomes-of-coronary-artery-stent-implantation-in-patients-with-end-stage-chronic-kidney-disease-including-hemodialysis-for-three-everolimus-eluting-ees-stent-designs-bioresorbable-polymer-ees-platinum-chromium-ees-and-cobalt-chrome-ees
#20
Takao Sato, Katsuharu Hatada, Syohei Kishi, Koichi Fuse, Satoshi Fujita, Yoshio Ikeda, Minoru Takahashi, Taku Matsubara, Masaaki Okabe, Yoshifusa Aizawa
BACKGROUNDS: New-generation bioresorbable polymer-everolimus eluting stents (BP-EES) are available. This study aimed to compare the clinical outcomes for BP-EES compared to more established stent designs, namely the platinum chromium-EES (PtCr-EES) and cobalt chrome-EES(CoCr-EES) in patients with the end-stage chronic kidney disease (CKD) including hemodialysis (HD). METHODS: One-hundred-forty-one consecutive stents (BP-EES [n = 44], PtCr-EES [n = 45], and CoCr-EES [n = 52]) were implanted in 104 patients with CKD...
November 22, 2017: Journal of Interventional Cardiology
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