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Cushman WC, Ringer RJ, Rodriguez CJ, Evans GW, Bates JT, Cutler JA, Hawfield A, Kitzman DW, Nasrallah IM, Oparil S, Nord J, Papademetriou V, Servilla K, Van Buren P, Whelton PK, Whittle J, Wright JT. Blood Pressure Intervention and Control in SPRINT. Hypertension 2022; 79:2071-2080. [PMID: 35766041 DOI: 10.1161/hypertensionaha.121.17233] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The SPRINT (Systolic Blood Pressure Intervention Trial) demonstrated reductions in major cardiovascular disease events and mortality with an intensive systolic blood pressure (SBP) goal intervention. However, a detailed description of the blood pressure intervention, antihypertensive medication usage, blood pressure levels, and rates and predictors of blood pressure control has not been reported previously. METHODS Hypertensive participants (n=9361) 50 years and older with elevated cardiovascular disease risk were randomized 1:1 to SBP goal <120 mm Hg or SBP goal <140 mm Hg. Guideline-recommended antihypertensive medications and dosing were provided at no cost. Intensive group participants were started on at least 2 medications, and medications were adjusted monthly until SBP goal was achieved, if feasible. Standard group participants were treated to achieve SBP 135 to 139 mm Hg. RESULTS Baseline blood pressure (median±interquartile range) was 138±19/78±16 mm Hg. For intensive group participants, percent at goal rose from 8.9% at baseline to 52.4% at 6 months and average antihypertensive medications rose from 2.2 to 2.7; SBP was <120 mm Hg in 61.6% and <130 mm Hg in 80.0% at their final visit. For the standard group participants, percent at goal rose from 53.0% at baseline to 68.6% at 6 months, while antihypertensive medications fell from 1.9 to 1.8. From 6 to 36 months, median SBP was stable at 119±14 mm Hg for intensive and 136±15 mm Hg for standard participants, with stable numbers of medications. Few predictors of SBP control were found in multiple regression models. CONCLUSIONS These results may inform and help replicate the benefits of SPRINT in clinical practice. REGISTRATION URL: http://www. CLINICALTRIALS gov; Unique identifier: NCT01206062.
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Affiliation(s)
- William C Cushman
- Department of Preventive Medicine, University of Tennessee Health Science Center, and Medical Service, Veterans Affairs Medical Center, Memphis (W.C.C.)
| | - Robert J Ringer
- Department of Veterans Affairs Cooperative Studies Program Clinical Research Pharmacy Coordinating Center, Albuquerque, NM (R.J.R.)
| | - Carlos J Rodriguez
- Departments of Medicine, Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY (C.J.R.)
| | - Gregory W Evans
- Department of Biostatistics and Data Science (G.W.E.), Wake Forest School of Medicine, Winston-Salem, NC
| | - Jeffrey T Bates
- Medical Care Line, Michael E. DeBakey Veterans Affairs Medical Center and Department of Medicine, Baylor College of Medicine, Houston, TX (J.T.B.)
| | - Jeffrey A Cutler
- Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, Bethesda, MD (J.A.C.)
| | - Amret Hawfield
- Department of Internal Medicine, Section on Nephrology (A.H.), Wake Forest School of Medicine, Winston-Salem, NC
| | - Dalane W Kitzman
- Department of Internal Medicine, Sections on Cardiovascular Medicine and Geriatrics (D.W.K.), Wake Forest School of Medicine, Winston-Salem, NC
| | - Ilya M Nasrallah
- Department of Radiology, University of Pennsylvania, Philadelphia (I.M.N.)
| | - Suzanne Oparil
- Vascular Biology and Hypertension Program, Division of Cardiovascular Diseases, Department of Medicine, University of Alabama at Birmingham (S.O.)
| | - John Nord
- Department of Internal Medicine, University of Utah School of Medicine and Internal Medicine Service, George E. Wahlen Veterans Affairs Medical Center, Salt Lake City (J.N.)
| | - Vasilios Papademetriou
- Medical Service, Veterans Affairs Medical Center and Georgetown University, Washington, DC (V.P.)
| | - Karen Servilla
- Research Service, New Mexico Veterans Affairs Health Care System, Albuquerque (K.S.)
| | - Peter Van Buren
- Department of Internal Medicine, University of Texas Southwestern Medical Center and Medical Service, Veterans Affairs Medical Center, Dallas, TX (P.V.B.)
| | - Paul K Whelton
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA (P.K.W.)
| | - Jeff Whittle
- Division of Medicine, Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee, WI (J.W.)
| | - Jackson T Wright
- Division of Nephrology and Hypertension, University Hospitals Cleveland Medical Center, Case Western Reserve University, OH (J.T.W.)
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Gladman N, Olson A, Wei S, Chougule K, Lu Z, Tello-Ruiz M, Meijs I, Van Buren P, Jiao Y, Wang B, Kumar V, Kumari S, Zhang L, Burke J, Chen J, Burow G, Hayes C, Emendack Y, Xin Z, Ware D. SorghumBase: a web-based portal for sorghum genetic information and community advancement. Planta 2022; 255:35. [PMID: 35015132 PMCID: PMC8752523 DOI: 10.1007/s00425-022-03821-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 12/27/2021] [Indexed: 05/05/2023]
Abstract
SorghumBase provides a community portal that integrates genetic, genomic, and breeding resources for sorghum germplasm improvement. Public research and development in agriculture rely on proper data and resource sharing within stakeholder communities. For plant breeders, agronomists, molecular biologists, geneticists, and bioinformaticians, centralizing desirable data into a user-friendly hub for crop systems is essential for successful collaborations and breakthroughs in germplasm development. Here, we present the SorghumBase web portal ( https://www.sorghumbase.org ), a resource for the sorghum research community. SorghumBase hosts a wide range of sorghum genomic information in a modular framework, built with open-source software, to provide a sustainable platform. This initial release of SorghumBase includes: (1) five sorghum reference genome assemblies in a pan-genome browser; (2) genetic variant information for natural diversity panels and ethyl methanesulfonate (EMS)-induced mutant populations; (3) search interface and integrated views of various data types; (4) links supporting interconnectivity with other repositories including genebank, QTL, and gene expression databases; and (5) a content management system to support access to community news and training materials. SorghumBase offers sorghum investigators improved data collation and access that will facilitate the growth of a robust research community to support genomics-assisted breeding.
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Affiliation(s)
- Nicholas Gladman
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Andrew Olson
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Sharon Wei
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Kapeel Chougule
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Zhenyuan Lu
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | | | - Ivar Meijs
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Peter Van Buren
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Yinping Jiao
- Department of Plant and Soil Science, Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, Lubbock, TX, 79409, USA
| | - Bo Wang
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Vivek Kumar
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Sunita Kumari
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Lifang Zhang
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - John Burke
- Plant Stress and Germplasm Development Unit, Cropping Systems Research Laboratory, U.S. Department of Agriculture-Agricultural Research Service, Lubbock, TX, 79415, USA
| | - Junping Chen
- Plant Stress and Germplasm Development Unit, Cropping Systems Research Laboratory, U.S. Department of Agriculture-Agricultural Research Service, Lubbock, TX, 79415, USA
| | - Gloria Burow
- Plant Stress and Germplasm Development Unit, Cropping Systems Research Laboratory, U.S. Department of Agriculture-Agricultural Research Service, Lubbock, TX, 79415, USA
| | - Chad Hayes
- Plant Stress and Germplasm Development Unit, Cropping Systems Research Laboratory, U.S. Department of Agriculture-Agricultural Research Service, Lubbock, TX, 79415, USA
| | - Yves Emendack
- Plant Stress and Germplasm Development Unit, Cropping Systems Research Laboratory, U.S. Department of Agriculture-Agricultural Research Service, Lubbock, TX, 79415, USA
| | - Zhanguo Xin
- Plant Stress and Germplasm Development Unit, Cropping Systems Research Laboratory, U.S. Department of Agriculture-Agricultural Research Service, Lubbock, TX, 79415, USA
| | - Doreen Ware
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA.
- U.S. Department of Agriculture-Agricultural Research Service, NEA Robert W. Holley Center for Agriculture and Health, Cornell University, Ithaca, NY, 14853, USA.
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3
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Wang L, Lu Z, Van Buren P, Ware D. SciApps: An Automated Platform for Processing and Distribution of Plant Genomics Data. Methods Mol Biol 2022; 2443:197-209. [PMID: 35037207 DOI: 10.1007/978-1-0716-2067-0_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
SciApps is an open-source, web-based platform for processing, storing, visualizing, and distributing genomic data and analysis results. Built upon the Tapis (formerly Agave) platform, SciApps brings users TB-scale of data storage via CyVerse Data Store and over one million CPUs via the Extreme Science and Engineering Discovery Environment (XSEDE) resources at Texas Advanced Computing Center (TACC). SciApps provides users ways to chain individual jobs into automated and reproducible workflows in a distributed cloud and provides a management system for data, associated metadata, individual analysis jobs, and multi-step workflows. This chapter provides examples of how to (1) submitting, managing, constructing workflows, (2) using public workflows for Bulked Segregant Analysis (BSA), (3) constructing a Data Analysis Center (DAC), and Data Coordination Center (DCC) for the plant ENCODE project.
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Affiliation(s)
- Liya Wang
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA
| | - Zhenyuan Lu
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA
| | | | - Doreen Ware
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA.
- USDA-ARS Robert W. Holley Center for Agriculture and Health, Ithaca, NY, USA.
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Van Buren P. Exploring psychosocial stressors as contributors to racial disparity in end-stage renal disease. J Investig Med 2021; 69:307-308. [PMID: 33495301 PMCID: PMC7848058 DOI: 10.1136/jim-2021-001787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/13/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Peter Van Buren
- Internal Medicine, Division of Nephrology, UT Southwestern Medical School, Dallas, Texas, USA .,Dallas Veterans Affairs Medical Center, Dallas, Texas, USA
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5
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Wang L, Lu Z, delaBastide M, Van Buren P, Wang X, Ghiban C, Regulski M, Drenkow J, Xu X, Ortiz-Ramirez C, Marco CF, Goodwin S, Dobin A, Birnbaum KD, Jackson DP, Martienssen RA, McCombie WR, Micklos DA, Schatz MC, Ware DH, Gingeras TR. Management, Analyses, and Distribution of the MaizeCODE Data on the Cloud. Front Plant Sci 2020; 11:289. [PMID: 32296450 PMCID: PMC7136414 DOI: 10.3389/fpls.2020.00289] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 02/26/2020] [Indexed: 06/11/2023]
Abstract
MaizeCODE is a project aimed at identifying and analyzing functional elements in the maize genome. In its initial phase, MaizeCODE assayed up to five tissues from four maize strains (B73, NC350, W22, TIL11) by RNA-Seq, Chip-Seq, RAMPAGE, and small RNA sequencing. To facilitate reproducible science and provide both human and machine access to the MaizeCODE data, we enhanced SciApps, a cloud-based portal, for analysis and distribution of both raw data and analysis results. Based on the SciApps workflow platform, we generated new components to support the complete cycle of MaizeCODE data management. These include publicly accessible scientific workflows for the reproducible and shareable analysis of various functional data, a RESTful API for batch processing and distribution of data and metadata, a searchable data page that lists each MaizeCODE experiment as a reproducible workflow, and integrated JBrowse genome browser tracks linked with workflows and metadata. The SciApps portal is a flexible platform that allows the integration of new analysis tools, workflows, and genomic data from multiple projects. Through metadata and a ready-to-compute cloud-based platform, the portal experience improves access to the MaizeCODE data and facilitates its analysis.
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Affiliation(s)
- Liya Wang
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | - Zhenyuan Lu
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | | | - Peter Van Buren
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | - Xiaofei Wang
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | - Cornel Ghiban
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | - Michael Regulski
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | - Jorg Drenkow
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | - Xiaosa Xu
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | | | - Cristina F. Marco
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | - Sara Goodwin
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | - Alexander Dobin
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | | | - David P. Jackson
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | | | | | - David A. Micklos
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | - Michael C. Schatz
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
- Johns Hopkins University, Baltimore, MD, United States
| | - Doreen H. Ware
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
- USDA-ARS Robert W. Holley Center for Agriculture and Health, Ithaca, NY, United States
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6
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Wang B, Tseng E, Baybayan P, Eng K, Regulski M, Jiao Y, Wang L, Olson A, Chougule K, Buren PV, Ware D. Variant phasing and haplotypic expression from long-read sequencing in maize. Commun Biol 2020; 3:78. [PMID: 32071408 PMCID: PMC7028979 DOI: 10.1038/s42003-020-0805-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 01/30/2020] [Indexed: 11/09/2022] Open
Abstract
Haplotype phasing maize genetic variants is important for genome interpretation, population genetic analysis and functional analysis of allelic activity. We performed an isoform-level phasing study using two maize inbred lines and their reciprocal crosses, based on single-molecule, full-length cDNA sequencing. To phase and analyze transcripts between hybrids and parents, we developed IsoPhase. Using this tool, we validated the majority of SNPs called against matching short-read data from embryo, endosperm and root tissues, and identified allele-specific, gene-level and isoform-level differential expression between the inbred parental lines and hybrid offspring. After phasing 6907 genes in the reciprocal hybrids, we annotated the SNPs and identified large-effect genes. In addition, we identified parent-of-origin isoforms, distinct novel isoforms in maize parent and hybrid lines, and imprinted genes from different tissues. Finally, we characterized variation in cis- and trans-regulatory effects. Our study provides measures of haplotypic expression that could increase accuracy in studies of allelic expression.
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Affiliation(s)
- Bo Wang
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Elizabeth Tseng
- Pacific Biosciences, 1380 Willow Road, Menlo Park, CA, 94025, USA
| | - Primo Baybayan
- Pacific Biosciences, 1380 Willow Road, Menlo Park, CA, 94025, USA
| | - Kevin Eng
- Pacific Biosciences, 1380 Willow Road, Menlo Park, CA, 94025, USA
| | - Michael Regulski
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Yinping Jiao
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Liya Wang
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Andrew Olson
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Kapeel Chougule
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Peter Van Buren
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA
| | - Doreen Ware
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, 11724, USA. .,USDA ARS NEA Robert W. Holley Center for Agriculture and Health Cornell University, Ithaca, NY, 14853, USA.
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Wang L, Lu Z, Van Buren P, Ware D. SciApps: a cloud-based platform for reproducible bioinformatics workflows. Bioinformatics 2019; 34:3917-3920. [PMID: 29897418 PMCID: PMC6223375 DOI: 10.1093/bioinformatics/bty439] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 05/25/2018] [Indexed: 11/14/2022] Open
Abstract
Motivation The rapid accumulation of both sequence and phenotype data generated by high-throughput methods has increased the need to store and analyze data on distributed storage and computing systems. Efficient data management across these heterogeneous systems requires a workflow management system to simplify the task of analysis through automation and make large-scale bioinformatics analyses accessible and reproducible. Results We developed SciApps, a web-based platform for reproducible bioinformatics workflows. The platform is designed to automate the execution of modular Agave apps and support execution of workflows on local clusters or in a cloud. Two workflows, one for association and one for annotation, are provided as exemplar scientific use cases. Availability and implementation https://www.sciapps.org. Supplementary information Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Liya Wang
- Cold Spring Harbor Laboratories, Cold Spring Harbor, Ithaca, NY, USA
| | - Zhenyuan Lu
- Cold Spring Harbor Laboratories, Cold Spring Harbor, Ithaca, NY, USA
| | - Peter Van Buren
- Cold Spring Harbor Laboratories, Cold Spring Harbor, Ithaca, NY, USA
| | - Doreen Ware
- Cold Spring Harbor Laboratories, Cold Spring Harbor, Ithaca, NY, USA.,USDA ARS NEA Robert W. Holley Center for Agriculture and Health, Cornell University, Ithaca, New York, USA
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Lewis GD, Malhotra R, Hernandez AF, McNulty SE, Smith A, Felker GM, Tang WHW, LaRue SJ, Redfield MM, Semigran MJ, Givertz MM, Van Buren P, Whellan D, Anstrom KJ, Shah MR, Desvigne-Nickens P, Butler J, Braunwald E. Effect of Oral Iron Repletion on Exercise Capacity in Patients With Heart Failure With Reduced Ejection Fraction and Iron Deficiency: The IRONOUT HF Randomized Clinical Trial. JAMA 2017; 317:1958-1966. [PMID: 28510680 PMCID: PMC5703044 DOI: 10.1001/jama.2017.5427] [Citation(s) in RCA: 287] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
IMPORTANCE Iron deficiency is present in approximately 50% of patients with heart failure with reduced left ventricular ejection fraction (HFrEF) and is an independent predictor of reduced functional capacity and mortality. However, the efficacy of inexpensive readily available oral iron supplementation in heart failure is unknown. OBJECTIVE To test whether therapy with oral iron improves peak exercise capacity in patients with HFrEF and iron deficiency. DESIGN, SETTING, AND PARTICIPANTS Phase 2, double-blind, placebo-controlled randomized clinical trial of patients with HFrEF (<40%) and iron deficiency, defined as a serum ferritin level of 15 to 100 ng/mL or a serum ferritin level of 101 to 299 ng/mL with transferrin saturation of less than 20%. Participants were enrolled between September 2014 and November 2015 at 23 US sites. INTERVENTIONS Oral iron polysaccharide (n = 111) or placebo (n = 114), 150 mg twice daily for 16 weeks. MAIN OUTCOMES AND MEASURES The primary end point was a change in peak oxygen uptake (V̇o2) from baseline to 16 weeks. Secondary end points were change in 6-minute walk distance, plasma N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels, and health status as assessed by Kansas City Cardiomyopathy Questionnaire (KCCQ, range 0-100, higher scores reflect better quality of life). RESULTS Among 225 randomized participants (median age, 63 years; 36% women) 203 completed the study. The median baseline peak V̇o2 was 1196 mL/min (interquartile range [IQR], 887-1448 mL/min) in the oral iron group and 1167 mL/min (IQR, 887-1449 mL/min) in the placebo group. The primary end point, change in peak V̇o2 at 16 weeks, did not significantly differ between the oral iron and placebo groups (+23 mL/min vs -2 mL/min; difference, 21 mL/min [95% CI, -34 to +76 mL/min]; P = .46). Similarly, at 16 weeks, there were no significant differences between treatment groups in changes in 6-minute walk distance (-13 m; 95% CI, -32 to 6 m), NT-proBNP levels (159; 95% CI, -280 to 599 pg/mL), or KCCQ score (1; 95% CI, -2.4 to 4.4), all P > .05. CONCLUSIONS AND RELEVANCE Among participants with HFrEF with iron deficiency, high-dose oral iron did not improve exercise capacity over 16 weeks. These results do not support use of oral iron supplementation in patients with HFrEF. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT02188784.
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Affiliation(s)
| | | | | | | | | | - G Michael Felker
- Duke Heart Center, Duke University School of Medicine, Durham, North Carolina
| | | | - Shane J LaRue
- Washington University School of Medicine, St Louis, Missouri
| | | | | | | | | | - David Whellan
- Thomas Jefferson University, Philadelphia, Pennsylvania
| | | | - Monica R Shah
- National Heart, Lung, and Blood Institute, Bethesda, Maryland
| | | | - Javed Butler
- Stony Brook Medical Center, Stony Brook, New York
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Tamura MK, Pajewski NM, Bryan RN, Weiner DE, Diamond M, Van Buren P, Taylor A, Beddhu S, Rosendorff C, Jahanian H, Zaharchuk G. Chronic kidney disease, cerebral blood flow, and white matter volume in hypertensive adults. Neurology 2016; 86:1208-16. [PMID: 26920359 PMCID: PMC4818564 DOI: 10.1212/wnl.0000000000002527] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 12/14/2015] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVE To determine the relation between markers of kidney disease-estimated glomerular filtration rate (eGFR) and urine albumin to creatinine ratio (UACR)-with cerebral blood flow (CBF) and white matter volume (WMV) in hypertensive adults. METHODS We used baseline data collected from 665 nondiabetic hypertensive adults aged ≥50 years participating in the Systolic Blood Pressure Intervention Trial (SPRINT). We used arterial spin labeling to measure CBF and structural 3T images to segment tissue into normal and abnormal WMV. We used quantile regression to estimate the association between eGFR and UACR with CBF and abnormal WMV, adjusting for sociodemographic and clinical characteristics. RESULTS There were 218 participants (33%) with eGFR <60 mL/min/1.73 m(2) and 146 participants (22%) with UACR ≥30 mg/g. Reduced eGFR was independently associated with higher adjusted median CBF, but not with abnormal WMV. Conversely, in adjusted analyses, there was a linear independent association between UACR and larger abnormal WMV, but not with CBF. Compared to participants with neither marker of CKD (eGFR ≥60 mL/min/1.73 m(2) and UACR <30 mg/g), median CBF was 5.03 mL/100 g/min higher (95% confidence interval [CI] 0.78, 9.29) and abnormal WMV was 0.63 cm(3) larger (95% CI 0.08, 1.17) among participants with both markers of CKD (eGFR <60 mL/min/1.73 m(2) and UACR ≥30 mg/g). CONCLUSIONS Among nondiabetic hypertensive adults, reduced eGFR was associated with higher CBF and higher UACR was associated with larger abnormal WMV.
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Affiliation(s)
- Manjula Kurella Tamura
- From the Geriatric Research and Education Clinical Center (M.K.T.), Palo Alto VA Health Care System; Division of Nephrology (M.K.T.) and Department of Radiology (H.J., G.Z.), Stanford University School of Medicine, Palo Alto, CA; Department of Biostatistical Sciences (N.M.P.), Wake Forest School of Medicine, Winston-Salem, NC; Department of Radiology (R.N.B.), University of Pennsylvania, Philadelphia; Division of Nephrology (D.E.W.), Tufts Medical Center, Boston, MA; Division of Nephrology (M.D.), Georgia Regents University, Augusta; Department of Medicine (P.V.B.), University of Texas Southwestern Medical Center, Dallas; Department of Medicine (A.T.), Baylor College of Medicine, Houston, TX; Division of Nephrology (S.B.), University of Utah, Salt Lake City; and Division of Cardiology (C.R.), Icahn School of Medicine and James J. Peters VA, New York, NY.
| | - Nicholas M Pajewski
- From the Geriatric Research and Education Clinical Center (M.K.T.), Palo Alto VA Health Care System; Division of Nephrology (M.K.T.) and Department of Radiology (H.J., G.Z.), Stanford University School of Medicine, Palo Alto, CA; Department of Biostatistical Sciences (N.M.P.), Wake Forest School of Medicine, Winston-Salem, NC; Department of Radiology (R.N.B.), University of Pennsylvania, Philadelphia; Division of Nephrology (D.E.W.), Tufts Medical Center, Boston, MA; Division of Nephrology (M.D.), Georgia Regents University, Augusta; Department of Medicine (P.V.B.), University of Texas Southwestern Medical Center, Dallas; Department of Medicine (A.T.), Baylor College of Medicine, Houston, TX; Division of Nephrology (S.B.), University of Utah, Salt Lake City; and Division of Cardiology (C.R.), Icahn School of Medicine and James J. Peters VA, New York, NY
| | - R Nick Bryan
- From the Geriatric Research and Education Clinical Center (M.K.T.), Palo Alto VA Health Care System; Division of Nephrology (M.K.T.) and Department of Radiology (H.J., G.Z.), Stanford University School of Medicine, Palo Alto, CA; Department of Biostatistical Sciences (N.M.P.), Wake Forest School of Medicine, Winston-Salem, NC; Department of Radiology (R.N.B.), University of Pennsylvania, Philadelphia; Division of Nephrology (D.E.W.), Tufts Medical Center, Boston, MA; Division of Nephrology (M.D.), Georgia Regents University, Augusta; Department of Medicine (P.V.B.), University of Texas Southwestern Medical Center, Dallas; Department of Medicine (A.T.), Baylor College of Medicine, Houston, TX; Division of Nephrology (S.B.), University of Utah, Salt Lake City; and Division of Cardiology (C.R.), Icahn School of Medicine and James J. Peters VA, New York, NY
| | - Daniel E Weiner
- From the Geriatric Research and Education Clinical Center (M.K.T.), Palo Alto VA Health Care System; Division of Nephrology (M.K.T.) and Department of Radiology (H.J., G.Z.), Stanford University School of Medicine, Palo Alto, CA; Department of Biostatistical Sciences (N.M.P.), Wake Forest School of Medicine, Winston-Salem, NC; Department of Radiology (R.N.B.), University of Pennsylvania, Philadelphia; Division of Nephrology (D.E.W.), Tufts Medical Center, Boston, MA; Division of Nephrology (M.D.), Georgia Regents University, Augusta; Department of Medicine (P.V.B.), University of Texas Southwestern Medical Center, Dallas; Department of Medicine (A.T.), Baylor College of Medicine, Houston, TX; Division of Nephrology (S.B.), University of Utah, Salt Lake City; and Division of Cardiology (C.R.), Icahn School of Medicine and James J. Peters VA, New York, NY
| | - Matthew Diamond
- From the Geriatric Research and Education Clinical Center (M.K.T.), Palo Alto VA Health Care System; Division of Nephrology (M.K.T.) and Department of Radiology (H.J., G.Z.), Stanford University School of Medicine, Palo Alto, CA; Department of Biostatistical Sciences (N.M.P.), Wake Forest School of Medicine, Winston-Salem, NC; Department of Radiology (R.N.B.), University of Pennsylvania, Philadelphia; Division of Nephrology (D.E.W.), Tufts Medical Center, Boston, MA; Division of Nephrology (M.D.), Georgia Regents University, Augusta; Department of Medicine (P.V.B.), University of Texas Southwestern Medical Center, Dallas; Department of Medicine (A.T.), Baylor College of Medicine, Houston, TX; Division of Nephrology (S.B.), University of Utah, Salt Lake City; and Division of Cardiology (C.R.), Icahn School of Medicine and James J. Peters VA, New York, NY
| | - Peter Van Buren
- From the Geriatric Research and Education Clinical Center (M.K.T.), Palo Alto VA Health Care System; Division of Nephrology (M.K.T.) and Department of Radiology (H.J., G.Z.), Stanford University School of Medicine, Palo Alto, CA; Department of Biostatistical Sciences (N.M.P.), Wake Forest School of Medicine, Winston-Salem, NC; Department of Radiology (R.N.B.), University of Pennsylvania, Philadelphia; Division of Nephrology (D.E.W.), Tufts Medical Center, Boston, MA; Division of Nephrology (M.D.), Georgia Regents University, Augusta; Department of Medicine (P.V.B.), University of Texas Southwestern Medical Center, Dallas; Department of Medicine (A.T.), Baylor College of Medicine, Houston, TX; Division of Nephrology (S.B.), University of Utah, Salt Lake City; and Division of Cardiology (C.R.), Icahn School of Medicine and James J. Peters VA, New York, NY
| | - Addison Taylor
- From the Geriatric Research and Education Clinical Center (M.K.T.), Palo Alto VA Health Care System; Division of Nephrology (M.K.T.) and Department of Radiology (H.J., G.Z.), Stanford University School of Medicine, Palo Alto, CA; Department of Biostatistical Sciences (N.M.P.), Wake Forest School of Medicine, Winston-Salem, NC; Department of Radiology (R.N.B.), University of Pennsylvania, Philadelphia; Division of Nephrology (D.E.W.), Tufts Medical Center, Boston, MA; Division of Nephrology (M.D.), Georgia Regents University, Augusta; Department of Medicine (P.V.B.), University of Texas Southwestern Medical Center, Dallas; Department of Medicine (A.T.), Baylor College of Medicine, Houston, TX; Division of Nephrology (S.B.), University of Utah, Salt Lake City; and Division of Cardiology (C.R.), Icahn School of Medicine and James J. Peters VA, New York, NY
| | - Srinivasan Beddhu
- From the Geriatric Research and Education Clinical Center (M.K.T.), Palo Alto VA Health Care System; Division of Nephrology (M.K.T.) and Department of Radiology (H.J., G.Z.), Stanford University School of Medicine, Palo Alto, CA; Department of Biostatistical Sciences (N.M.P.), Wake Forest School of Medicine, Winston-Salem, NC; Department of Radiology (R.N.B.), University of Pennsylvania, Philadelphia; Division of Nephrology (D.E.W.), Tufts Medical Center, Boston, MA; Division of Nephrology (M.D.), Georgia Regents University, Augusta; Department of Medicine (P.V.B.), University of Texas Southwestern Medical Center, Dallas; Department of Medicine (A.T.), Baylor College of Medicine, Houston, TX; Division of Nephrology (S.B.), University of Utah, Salt Lake City; and Division of Cardiology (C.R.), Icahn School of Medicine and James J. Peters VA, New York, NY
| | - Clive Rosendorff
- From the Geriatric Research and Education Clinical Center (M.K.T.), Palo Alto VA Health Care System; Division of Nephrology (M.K.T.) and Department of Radiology (H.J., G.Z.), Stanford University School of Medicine, Palo Alto, CA; Department of Biostatistical Sciences (N.M.P.), Wake Forest School of Medicine, Winston-Salem, NC; Department of Radiology (R.N.B.), University of Pennsylvania, Philadelphia; Division of Nephrology (D.E.W.), Tufts Medical Center, Boston, MA; Division of Nephrology (M.D.), Georgia Regents University, Augusta; Department of Medicine (P.V.B.), University of Texas Southwestern Medical Center, Dallas; Department of Medicine (A.T.), Baylor College of Medicine, Houston, TX; Division of Nephrology (S.B.), University of Utah, Salt Lake City; and Division of Cardiology (C.R.), Icahn School of Medicine and James J. Peters VA, New York, NY
| | - Hesamoddin Jahanian
- From the Geriatric Research and Education Clinical Center (M.K.T.), Palo Alto VA Health Care System; Division of Nephrology (M.K.T.) and Department of Radiology (H.J., G.Z.), Stanford University School of Medicine, Palo Alto, CA; Department of Biostatistical Sciences (N.M.P.), Wake Forest School of Medicine, Winston-Salem, NC; Department of Radiology (R.N.B.), University of Pennsylvania, Philadelphia; Division of Nephrology (D.E.W.), Tufts Medical Center, Boston, MA; Division of Nephrology (M.D.), Georgia Regents University, Augusta; Department of Medicine (P.V.B.), University of Texas Southwestern Medical Center, Dallas; Department of Medicine (A.T.), Baylor College of Medicine, Houston, TX; Division of Nephrology (S.B.), University of Utah, Salt Lake City; and Division of Cardiology (C.R.), Icahn School of Medicine and James J. Peters VA, New York, NY
| | - Greg Zaharchuk
- From the Geriatric Research and Education Clinical Center (M.K.T.), Palo Alto VA Health Care System; Division of Nephrology (M.K.T.) and Department of Radiology (H.J., G.Z.), Stanford University School of Medicine, Palo Alto, CA; Department of Biostatistical Sciences (N.M.P.), Wake Forest School of Medicine, Winston-Salem, NC; Department of Radiology (R.N.B.), University of Pennsylvania, Philadelphia; Division of Nephrology (D.E.W.), Tufts Medical Center, Boston, MA; Division of Nephrology (M.D.), Georgia Regents University, Augusta; Department of Medicine (P.V.B.), University of Texas Southwestern Medical Center, Dallas; Department of Medicine (A.T.), Baylor College of Medicine, Houston, TX; Division of Nephrology (S.B.), University of Utah, Salt Lake City; and Division of Cardiology (C.R.), Icahn School of Medicine and James J. Peters VA, New York, NY
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Zipes DP, Neuzil P, Theres H, Caraway D, Mann DL, Mannheimer C, Van Buren P, Linde C, Linderoth B, Kueffer F, Sarazin SA, DeJongste MJ. Determining the Feasibility of Spinal Cord Neuromodulation for the Treatment of Chronic Systolic Heart Failure. JACC: Heart Failure 2016; 4:129-136. [DOI: 10.1016/j.jchf.2015.10.006] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/30/2015] [Accepted: 10/02/2015] [Indexed: 01/22/2023]
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Kiernan MS, Joseph SM, Katz JN, Kilic A, Rich JD, Tallman MP, Van Buren P, Lyons JJ, Bethea B, Eckman P, Gosev I, Lee SS, Soleimani B, Takayama H, Patel CB, Uriel N. Sharing the care of mechanical circulatory support: collaborative efforts of patients/caregivers, shared-care sites, and left ventricular assist device implanting centers. Circ Heart Fail 2015; 8:629-35. [PMID: 25991805 DOI: 10.1161/circheartfailure.114.001767] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Michael S Kiernan
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.).
| | - Susan M Joseph
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Jason N Katz
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Ahmet Kilic
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Jonathan D Rich
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Mark P Tallman
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Peter Van Buren
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - James J Lyons
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Brian Bethea
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Peter Eckman
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Igor Gosev
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Sangjin S Lee
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Behzad Soleimani
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Hiroo Takayama
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Chetan B Patel
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
| | - Nir Uriel
- From the Division of Cardiology, Tufts University School of Medicine, Boston, MA (M.S.K.); Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, MO (S.M.J.); Division of Cardiology, University of North Carolina, Chapel Hill (J.N.K.); Division of Cardiac Surgery, The Ohio State University, Columbus (A.K.) Division of Cardiology, Northwestern University, Chicago, IL (J.D.R.); Division of Clinical Cardiology and Advanced Heart Failure Management, Capital Cardiology Associates, Albany, NY (M.P.T.); Division of Cardiology, University of Vermont School of Medicine, Burlington (P.V.B.); Division of Cardiology, Vassar Brothers Medical Center, Poughkeepsie; NY (J.J.L.); Division of Cardiology, University of Texas, Southwestern Medical Center, Dallas (B.B.); Division of Cardiology, University of Minnesota, Minneapolis (P.E.); Division of Cardiac Surgery, Brigham and Women's Hospital, Boston, MA (I.G.); Department of Cardiovascular Medicine, Spectrum Health, Grand Rapids, MI (S.S.L.); Division of Cardiothoracic Surgery, Penn State Hershey Medical Center, Hershey, PA (B.S.); Division of Cardiothoracic Surgery, Columbia University, New York (H.T.); Division of Cardiology, Duke University, Durham, NC (C.B.P.); and Division of Cardiology, University of Chicago, IL (N.U.)
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Inrig JK, Molina C, D’Silva K, Kim C, Van Buren P, Allen JD, Toto R. Effect of Low Versus High Dialysate Sodium Concentration on Blood Pressure and Endothelial-Derived Vasoregulators During Hemodialysis: A Randomized Crossover Study. Am J Kidney Dis 2015; 65:464-73. [DOI: 10.1053/j.ajkd.2014.10.021] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 10/19/2014] [Indexed: 01/13/2023]
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Zile MR, Baicu CF, Ikonomidis JS, Stroud RE, Nietert PJ, Bradshaw AD, Slater R, Palmer BM, Van Buren P, Meyer M, Redfield MM, Bull DA, Granzier HL, LeWinter MM. Myocardial stiffness in patients with heart failure and a preserved ejection fraction: contributions of collagen and titin. Circulation 2015; 131:1247-59. [PMID: 25637629 DOI: 10.1161/circulationaha.114.013215] [Citation(s) in RCA: 460] [Impact Index Per Article: 51.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 01/26/2015] [Indexed: 12/15/2022]
Abstract
BACKGROUND The purpose of this study was to determine whether patients with heart failure and a preserved ejection fraction (HFpEF) have an increase in passive myocardial stiffness and the extent to which discovered changes depend on changes in extracellular matrix fibrillar collagen and cardiomyocyte titin. METHODS AND RESULTS Seventy patients undergoing coronary artery bypass grafting underwent an echocardiogram, plasma biomarker determination, and intraoperative left ventricular epicardial anterior wall biopsy. Patients were divided into 3 groups: referent control (n=17, no hypertension or diabetes mellitus), hypertension (HTN) without (-) HFpEF (n=31), and HTN with (+) HFpEF (n=22). One or more of the following studies were performed on the biopsies: passive stiffness measurements to determine total, collagen-dependent and titin-dependent stiffness (differential extraction assay), collagen assays (biochemistry or histology), or titin isoform and phosphorylation assays. In comparison with controls, patients with HTN(-)HFpEF had no change in left ventricular end-diastolic pressure, myocardial passive stiffness, collagen, or titin phosphorylation but had an increase in biomarkers of inflammation (C-reactive protein, soluble ST2, tissue inhibitor of metalloproteinase 1). In comparison with both control and HTN(-)HFpEF, patients with HTN(+)HFpEF had increased left ventricular end-diastolic pressure, left atrial volume, N-terminal propeptide of brain natriuretic peptide, total, collagen-dependent, and titin-dependent stiffness, insoluble collagen, increased titin phosphorylation on PEVK S11878(S26), reduced phosphorylation on N2B S4185(S469), and increased biomarkers of inflammation. CONCLUSIONS Hypertension in the absence of HFpEF did not alter passive myocardial stiffness. Patients with HTN(+)HFpEF had a significant increase in passive myocardial stiffness; collagen-dependent and titin-dependent stiffness were increased. These data suggest that the development of HFpEF depends on changes in both collagen and titin homeostasis.
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Affiliation(s)
- Michael R Zile
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.).
| | - Catalin F Baicu
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - John S Ikonomidis
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - Robert E Stroud
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - Paul J Nietert
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - Amy D Bradshaw
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - Rebecca Slater
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - Bradley M Palmer
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - Peter Van Buren
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - Markus Meyer
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - Margaret M Redfield
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - David A Bull
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - Henk L Granzier
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
| | - Martin M LeWinter
- From Division of Cardiology, Department of Medicine, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (M.R.Z., C.F.B., A.D.B.); Division of Cardiothoracic Surgery, Department of Surgery, Medical University of South Carolina, and RHJ Department of Veterans Affairs Medical Center, Charleston, SC (J.S.I., R.E.S.); Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC (P.J.N.); Department of Cellular and Molecular Medicine, University of Arizona, Tucson (R.S., H.L.G.); Cardiology Unit, Department of Medicine, University of Vermont, Burlington (B.M.P., P.V.B., M.M., M.M.L.W.); Department of Molecular Physiology and Biophysics, University of Vermont, Burlington (B.M.P., P.V.B., M.M.L.W.); Division of Cardiology, Mayo Clinic, Rochester, MN (M.M.R.); and Division of Cardiothoracic Surgery, Department of Surgery, University of Utah Health Sciences Center, Salt Lake City (D.A.B.)
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Inrig JK, Van Buren P, Kim C, Vongpatanasin W, Povsic TJ, Toto R. Probing the mechanisms of intradialytic hypertension: a pilot study targeting endothelial cell dysfunction. Clin J Am Soc Nephrol 2012; 7:1300-9. [PMID: 22700888 DOI: 10.2215/cjn.10010911] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
BACKGROUND AND OBJECTIVES Intradialytic hypertension may be caused by an impaired endothelial cell response to hemodialysis. Carvedilol has been shown to improve endothelial cell function in vivo and to block endothelin-1 release in vitro. This study hypothesized that carvedilol would improve endothelial cell function and reduce the occurrence of intradialytic hypertension. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS A prospective 12-week pilot study of carvedilol titrated to 50 mg twice daily was performed among 25 hemodialysis participants with intradialytic hypertension. Each patient served as his or her own control. Paired tests were used to analyze changes in BP and endothelial cell function--assessed by flow-mediated vasodilation, endothelial progenitor cells (aldehyde dehydrogenase bright activity and CD34(+)CD133(+)), asymmetric dimethylarginine, and endothelin-1--from baseline to study end. RESULTS Flow-mediated vasodilation was significantly improved with carvedilol (from 1.03% to 1.40%, P=0.02). There was no significant change in endothelial progenitor cells, endothelin-1, or asymmetric dimethylarginine. Although prehemodialysis systolic BP was unchanged (144-146 mmHg, P=0.5), posthemodialysis systolic BP, 44-hour ambulatory systolic BP, and the frequency of intradialytic hypertension decreased with carvedilol (159-142 mmHg, P<0.001; 155-148 mmHg, P=0.05; and 77% [4.6 of 6] to 28% [1.7 of 6], P<0.001, respectively). CONCLUSIONS Among hemodialysis participants with intradialytic hypertension, targeting endothelial cell dysfunction with carvedilol was associated with modest improvements in endothelial function, improved intradialytic and interdialytic BP, and reduced frequency of intradialytic hypertension. Randomized controlled trials are required to confirm these findings.
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Affiliation(s)
- Jula K Inrig
- University of Texas Southwestern Medical Center, Dallas, Texas 75390-8523, USA.
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Inrig JK, Van Buren P, Kim C, Vongpatanasin W, Povsic TJ, Toto RD. Intradialytic hypertension and its association with endothelial cell dysfunction. Clin J Am Soc Nephrol 2011; 6:2016-24. [PMID: 21757643 DOI: 10.2215/cjn.11351210] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND AND OBJECTIVES Intradialytic hypertension is associated with adverse outcomes, yet the mechanism is uncertain. Patients with intradialytic hypertension exhibit imbalances in endothelial-derived vasoregulators nitric oxide and endothelin-1, indirectly suggesting endothelial cell dysfunction. We hypothesized that intradialytic hypertension is associated in vivo with endothelial cell dysfunction, a novel predictor of adverse cardiovascular outcomes. DESIGN, SETTINGS, PARTICIPANTS, & MEASUREMENTS We performed a case-control cohort study including 25 hemodialysis (HD) subjects without (controls) and 25 with intradialytic hypertension (an increase in systolic BP pre- to postdialysis ≥10 mmHg ≥4/6 consecutive HD sessions). The primary outcome was peripheral blood endothelial progenitor cells (EPCs) assessed by aldehyde dehydrogenase activity (ALDH(br)) and cell surface marker expression (CD34(+)CD133(+)). We also assessed endothelial function by ultrasonographic measurement of brachial artery flow-mediated vasodilation (FMD) normalized for shear stress. Parametric and nonparametric t tests were used to compare EPCs, FMD, and BP. RESULTS Baseline characteristics and comorbidities were similar between groups. Compared with controls, 2-week average predialysis systolic BP was lower among subjects with intradialytic hypertension (144.0 versus 155.5 mmHg), but postdialysis systolic BP was significantly higher (159.0 versus 128.1 mmHg). Endothelial cell function was impaired among subjects with intradialytic hypertension as measured by decreased median ALDH(br) cells and decreased CD34(+)CD133(+) cells (ALDH(br), 0.034% versus 0.053%; CD34(+)CD133(+), 0.033% versus 0.059%). FMD was lower among subjects with intradialytic hypertension (1.03% versus 1.67%). CONCLUSIONS Intradialytic hypertension is associated with endothelial cell dysfunction. We propose that endothelial cell dysfunction may partially explain the higher event rates observed in these patients.
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Affiliation(s)
- Jula K Inrig
- UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-8523, USA.
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Schnable PS, Ware D, Fulton RS, Stein JC, Wei F, Pasternak S, Liang C, Zhang J, Fulton L, Graves TA, Minx P, Reily AD, Courtney L, Kruchowski SS, Tomlinson C, Strong C, Delehaunty K, Fronick C, Courtney B, Rock SM, Belter E, Du F, Kim K, Abbott RM, Cotton M, Levy A, Marchetto P, Ochoa K, Jackson SM, Gillam B, Chen W, Yan L, Higginbotham J, Cardenas M, Waligorski J, Applebaum E, Phelps L, Falcone J, Kanchi K, Thane T, Scimone A, Thane N, Henke J, Wang T, Ruppert J, Shah N, Rotter K, Hodges J, Ingenthron E, Cordes M, Kohlberg S, Sgro J, Delgado B, Mead K, Chinwalla A, Leonard S, Crouse K, Collura K, Kudrna D, Currie J, He R, Angelova A, Rajasekar S, Mueller T, Lomeli R, Scara G, Ko A, Delaney K, Wissotski M, Lopez G, Campos D, Braidotti M, Ashley E, Golser W, Kim H, Lee S, Lin J, Dujmic Z, Kim W, Talag J, Zuccolo A, Fan C, Sebastian A, Kramer M, Spiegel L, Nascimento L, Zutavern T, Miller B, Ambroise C, Muller S, Spooner W, Narechania A, Ren L, Wei S, Kumari S, Faga B, Levy MJ, McMahan L, Van Buren P, Vaughn MW, Ying K, Yeh CT, Emrich SJ, Jia Y, Kalyanaraman A, Hsia AP, Barbazuk WB, Baucom RS, Brutnell TP, Carpita NC, Chaparro C, Chia JM, Deragon JM, Estill JC, Fu Y, Jeddeloh JA, Han Y, Lee H, Li P, Lisch DR, Liu S, Liu Z, Nagel DH, McCann MC, SanMiguel P, Myers AM, Nettleton D, Nguyen J, Penning BW, Ponnala L, Schneider KL, Schwartz DC, Sharma A, Soderlund C, Springer NM, Sun Q, Wang H, Waterman M, Westerman R, Wolfgruber TK, Yang L, Yu Y, Zhang L, Zhou S, Zhu Q, Bennetzen JL, Dawe RK, Jiang J, Jiang N, Presting GG, Wessler SR, Aluru S, Martienssen RA, Clifton SW, McCombie WR, Wing RA, Wilson RK. The B73 Maize Genome: Complexity, Diversity, and Dynamics. Science 2009; 326:1112-5. [PMID: 19965430 DOI: 10.1126/science.1178534] [Citation(s) in RCA: 2467] [Impact Index Per Article: 164.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Toth MJ, Matthews DE, Ades PA, Tischler MD, Van Buren P, Previs M, LeWinter MM. Skeletal muscle myofibrillar protein metabolism in heart failure: relationship to immune activation and functional capacity. Am J Physiol Endocrinol Metab 2005; 288:E685-92. [PMID: 15562248 DOI: 10.1152/ajpendo.00444.2004] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chronic heart failure is characterized by changes in skeletal muscle that contribute to physical disability. Most studies to date have investigated defects in skeletal muscle oxidative capacity. In contrast, less is known about how heart failure affects myofibrillar protein metabolism. Thus we examined the effect of heart failure on skeletal muscle myofibrillar protein metabolism, with a specific emphasis on changes in myosin heavy chain (MHC) protein content, synthesis, and isoform distribution in 10 patients with heart failure (63 +/- 3 yr) and 11 controls (70 +/- 3 yr). In addition, we examined the relationship of MHC protein metabolism to inflammatory markers and physical function. Although MHC and actin protein content did not differ between groups, MHC protein content decreased with increasing disease severity in heart failure patients (r = -0.748, P < 0.02), whereas actin protein content was not related to disease severity. No difference in MHC protein synthesis was found between groups, and MHC protein synthesis rates were not related to disease severity. There were, however, relationships between C-reactive protein and both MHC protein synthesis (r = -0.442, P = 0.05) and the ratio of MHC to mixed muscle protein synthesis (r = -0.493, P < 0.03). Heart failure patients showed reduced relative amounts of MHC I (P < 0.05) and a trend toward increased MHC IIx (P = 0.06). In regression analyses, decreased MHC protein content was related to decreased exercise capacity and muscle strength in heart failure patients. Our results demonstrate that heart failure affects both the quantity and isoform distribution of skeletal muscle MHC protein. The fact that MHC protein content was related to both exercise capacity and muscle strength further suggests that quantitative alterations in MHC protein may have functional significance.
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Affiliation(s)
- Michael J Toth
- Health Science Research Facility 126 B, 149 Beaumont Ave., University of Vermont, Burlington, VT 05405, USA.
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