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Mickiewicz A, Marlęga-Linert J, Czapiewska M, Marcinkowska M, Krzesińska A, Kuchta A, Fijałkowski M, Gruchała M, Mika A. Fatty acid analysis in serum of patients with elevated lipoprotein(a) and cardiovascular disease undergoing lipoprotein apheresis. J Clin Lipidol 2024; 18:e197-e206. [PMID: 38092592 DOI: 10.1016/j.jacl.2023.11.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/07/2023] [Accepted: 11/19/2023] [Indexed: 05/05/2024]
Abstract
BACKGROUND Lipoprotein apheresis (LA) is an extracorporeal treatment that transiently reduces lipoprotein (a) [Lp(a)] by 60% and leads to an 80-92% reduction in major adverse cardiovascular events. LA has a significant impact on lipid profile in serum of patients with atherosclerotic cardiovascular disease. OBJECTIVE To investigate the effects of LA on the composition of serum fatty acids (FAs), focusing on those which could have an impact on cardiovascular disease (CVD). METHODS This is a prospective study in the First Department of Cardiology of the Medical University of Gdansk, Poland. Serum samples were collected from 28 patients before LA, just after the procedure, and 7 days after LA. Additionally, in a smaller group of patients, the samples were collected after a second tour of LA (2 weeks later), as well as after 1 year from the first procedure. The serum FA profile was analyzed using gas chromatography-mass spectrometry. RESULTS After the LA procedure, a substantial change in serum FA composition along with low-density lipoprotein cholesterol (LDL-C) and Lp(a) decrease were observed 7 days after procedure, but these parameters returned to the values similar to those before procedure after 14 days. Very long-chain FAs (VLCFAs) and very long-chain monounsaturated FAs (VLC-MUFAs) were eluted at 57% and remained low even 7 days after LA (p=0.027 and p < 0.001, respectively). We also observed an increase in the percentage of total branched-chain FAs (BCFAs) (p=0.004) and anteiso BCFAs (p=0.012) after LA. After 1 year of regular LA, a substantial decrease in serum VLC-MUFAs and n3 polyunsaturated LA (PUFAs) were noted. CONCLUSIONS Decreased VLCFAs and VLC-MUFAs involved in CVD development remained low even 7 days after LA. An acute increase in the levels of anti-inflammatory BCFAs was observed. In turn long-term regular administration of LA substantially decreased VLC-MUFA and n3 PUFA.
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Affiliation(s)
- Agnieszka Mickiewicz
- First Department of Cardiology, Medical University of Gdansk, Smoluchowskiego 17, 80-214 Gdansk, Poland (Drs Mickiewicz, Gruchała, Marlęga-Linert, Marcinkowska and Fijałkowski).
| | - Joanna Marlęga-Linert
- First Department of Cardiology, Medical University of Gdansk, Smoluchowskiego 17, 80-214 Gdansk, Poland (Drs Mickiewicz, Gruchała, Marlęga-Linert, Marcinkowska and Fijałkowski)
| | - Monika Czapiewska
- Department of Pharmaceutical Biochemistry, Medical University of Gdansk, Debinki 1, 80-211 Gdansk, Poland (Drs Czapiewska and Mika)
| | - Marta Marcinkowska
- First Department of Cardiology, Medical University of Gdansk, Smoluchowskiego 17, 80-214 Gdansk, Poland (Drs Mickiewicz, Gruchała, Marlęga-Linert, Marcinkowska and Fijałkowski)
| | - Aleksandra Krzesińska
- Department of Clinical Chemistry, Medical University of Gdansk, Dębinki 7, 80-211 Gdansk, Poland (Drs Krzesińska and Kuchta)
| | - Agnieszka Kuchta
- Department of Clinical Chemistry, Medical University of Gdansk, Dębinki 7, 80-211 Gdansk, Poland (Drs Krzesińska and Kuchta)
| | - Marcin Fijałkowski
- First Department of Cardiology, Medical University of Gdansk, Smoluchowskiego 17, 80-214 Gdansk, Poland (Drs Mickiewicz, Gruchała, Marlęga-Linert, Marcinkowska and Fijałkowski)
| | - Marcin Gruchała
- First Department of Cardiology, Medical University of Gdansk, Smoluchowskiego 17, 80-214 Gdansk, Poland (Drs Mickiewicz, Gruchała, Marlęga-Linert, Marcinkowska and Fijałkowski)
| | - Adriana Mika
- Department of Pharmaceutical Biochemistry, Medical University of Gdansk, Debinki 1, 80-211 Gdansk, Poland (Drs Czapiewska and Mika); Department of Environmental Analysis, University of Gdansk, Wita Stwosza 63, 80-308 Gdansk, Poland (Dr Mika).
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Sosnowska B, Stepinska J, Mitkowski P, Bielecka-Dabrowa A, Bobrowska B, Budzianowski J, Burchardt P, Chlebus K, Dobrowolski P, Gasior M, Jankowski P, Kubica J, Mickiewicz A, Mysliwiec M, Osadnik T, Prejbisz A, Rajtar-Salwa R, Wita K, Witkowski A, Gil R, Banach M. Recommendations of the Experts of the Polish Cardiac Society (PCS) and the Polish Lipid Association (PoLA) on the diagnosis and management of elevated lipoprotein(a) levels. Arch Med Sci 2024; 20:8-27. [PMID: 38414479 PMCID: PMC10895977 DOI: 10.5114/aoms/183522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 01/31/2024] [Indexed: 02/29/2024] Open
Abstract
Lipoprotein(a) [Lp(a)] is made up of a low-density lipoprotein (LDL) particle and a specific apolipoprotein(a). The blood concentration of Lp(a) is approximately 90% genetically determined, and the main genetic factor determining Lp(a) levels is the size of the apo(a) isoform, which is determined by the number of KIV2 domain repeats. The size of the apo(a) isoform is inversely proportional to the blood concentration of Lp(a). Lp(a) is a strong and independent cardiovascular risk factor. Elevated Lp(a) levels ≥ 50 mg/dl (≥ 125 nmol/l) are estimated to occur in more than 1.5 billion people worldwide. However, determination of Lp(a) levels is performed far too rarely, including Poland, where, in fact, it is only since the 2021 guidelines of the Polish Lipid Association (PoLA) and five other scientific societies that Lp(a) measurements have begun to be performed. Determination of Lp(a) concentrations is not easy due to, among other things, the different sizes of the apo(a) isoforms; however, the currently available certified tests make it possible to distinguish between people with low and high cardiovascular risk with a high degree of precision. In 2022, the first guidelines for the management of patients with elevated lipoprotein(a) levels were published by the European Atherosclerosis Society (EAS) and the American Heart Association (AHA). The first Polish guidelines are the result of the work of experts from the two scientific societies and their aim is to provide clear, practical recommendations for the determination and management of elevated Lp(a) levels.
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Affiliation(s)
- Bożena Sosnowska
- Department of Preventive Cardiology and Lipidology, Medical University of Lodz (MUL), Lodz, Poland
| | | | - Przemyslaw Mitkowski
- 1 Department of Cardiology, Poznan University of Medical Sciences, Poznan, Poland
| | - Agata Bielecka-Dabrowa
- Department of Preventive Cardiology and Lipidology, Medical University of Lodz (MUL), Lodz, Poland
- Department of Cardiology and Adult Congenital Defects, Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland
| | - Beata Bobrowska
- Department of Clinical Cardiology and Cardiovascular Interventions, University Hospital in Krakow, Krakow, Poland
| | - Jan Budzianowski
- Department of Interventional Cardiology and Cardiac Surgery, University of Zielona Gora, Collegium Medicum, Zielona Gora, Poland
- Multidisciplinary Hospital, Nowa Sol, Poland
| | - Pawel Burchardt
- Department of Cardiology, J. Strus Hospital, Poznan, Poland
- Department of Hypertension, Angiology and Internal Medicine, Poznan University of Medical Sciences, Poznan, Poland
| | - Krzysztof Chlebus
- National Center for Familial Hypercholesterolemia, 1 Chair and Department of Cardiology, Medical University of Gdansk, Gdansk, Poland
| | - Piotr Dobrowolski
- Department of Epidemiology, Cardiovascular Disease Prevention and Health Promotion, National Institute of Cardiology, Warsaw, Poland
| | - Mariusz Gasior
- 3 Department of Cardiology, Silesian Centre for Heart Diseases, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Zabrze, Poland
| | - Piotr Jankowski
- Department of Internal Medicine and Geriatric Cardiology, Medical Centre for Postgraduate Education, Warsaw, Poland
| | - Jacek Kubica
- Department of Cardiology and Internal Medicine, Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
| | - Agnieszka Mickiewicz
- Lipoprotein Apheresis Laboratory, 1 Department of Cardiology, Medical University of Gdansk, Gdansk, Poland
| | - Malgorzata Mysliwiec
- Department of Paediatrics, Diabetology and Endocrinology, Medical University of Gdansk, Gdansk, Poland
| | - Tadeusz Osadnik
- Department of Pharmacology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Katowice, Poland
| | - Aleksander Prejbisz
- Department of Epidemiology, Cardiovascular Disease Prevention and Health Promotion, National Institute of Cardiology, Warsaw, Poland
| | - Renata Rajtar-Salwa
- Department of Clinical Cardiology and Cardiovascular Interventions, University Hospital in Krakow, Krakow, Poland
| | - Kristian Wita
- 1 Department of Cardiology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland
| | - Adam Witkowski
- Department of Interventional Cardiology and Angiology, National Institute of Cardiology, Warsaw, Poland
| | - Robert Gil
- Department of Cardiology, National Medical Institute of the Ministry of Internal Affairs and Administration, Warsaw, Poland
| | - Maciej Banach
- Department of Preventive Cardiology and Lipidology, Medical University of Lodz (MUL), Lodz, Poland
- Department of Cardiology and Adult Congenital Defects, Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland
- Ciccarone Center for the Prevention of Cardiovascular Disease, Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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3
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Diederiks NM, van der Burgt YEM, Ruhaak LR, Cobbaert CM. Developing an SI-traceable Lp(a) reference measurement system: a pilgrimage to selective and accurate apo(a) quantification. Crit Rev Clin Lab Sci 2023; 60:483-501. [PMID: 37128734 DOI: 10.1080/10408363.2023.2199353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 03/14/2023] [Accepted: 04/01/2023] [Indexed: 05/03/2023]
Abstract
In the past decade a remarkable rebirth of serum/plasma lipoprotein(a) (Lp(a)) as an independent risk factor of cardiovascular disease (CVD) occurred. Updated evidence for a causal continuous association in different ethnic groups between Lp(a) concentrations and cardiovascular outcomes has been published in the latest European Atherosclerosis Society (EAS) Lp(a) consensus statement. Interest in measuring Lp(a) at least once in a person's lifetime moreover originates from the development of promising new Lp(a) lowering drugs. Accurate and clinically effective Lp(a) tests are of key importance for the timely detection of high-risk individuals and for future evaluation of the therapeutic effects of Lp(a) lowering medication. To this end, it is necessary to improve the performance and standardization of existing Lp(a) tests, as is also noted in the Lp(a) consensus statement. Consequently, a state-of-the-art internationally endorsed reference measurement system (RMS) must be in place that allows for performance evaluation of Lp(a) field tests in order to certify their validity and accuracy. An ELISA-based RMS from Northwest Lipid Research Laboratory (University of Washington, Seattle, USA) has been available since the 1990s. A next-generation apo(a)/Lp(a) RMS is now being developed by a working group from the International Federation of Clinical Chemistry and Laboratory Medicine (IFCC). The envisioned apo(a) RMS is based on the direct measurement of selected proteotypic fragments generated after proteolytic digestion using quantitative protein mass spectrometry (MS). The choice for an MS-based RMS enables selective measurement of the proteotypic peptides and is by design apo(a) isoform insensitive. Clearly, the equimolar conversion of apo(a) into the surrogate peptide measurands is required to obtain accurate Lp(a) results. The completeness of proteolysis under reaction conditions from the candidate reference measurement procedure (RMP) has been demonstrated for the quantifying apo(a) peptides. Currently, the candidate apo(a) RMP is endorsed by the IFCC and recommendations for suitable secondary reference materials have been made in a recent commutability study paper. Ongoing efforts toward a complete apo(a) RMS that is listed by the Joint Committee on Traceability in Laboratory Medicine (JCTLM) are focused on the peptide-based calibration and the establishment of a network of calibration laboratories running the apo(a) RMS in a harmonized way. Once completed, it will be the holy grail for evaluation and certification of Lp(a) field methods.
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Affiliation(s)
- Nina M Diederiks
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, ZA, The Netherlands
| | - Yuri E M van der Burgt
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, ZA, The Netherlands
| | - L Renee Ruhaak
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, ZA, The Netherlands
| | - Christa M Cobbaert
- Department of Clinical Chemistry and Laboratory Medicine, Leiden University Medical Center, Leiden, ZA, The Netherlands
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4
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Botezatu SB, Tzolos E, Kaiser Y, Cartlidge TRG, Kwiecinski J, Barton AK, Yu X, Williams MC, van Beek EJR, White A, Kroon J, Slomka PJ, Popescu BA, Newby DE, Stroes ESG, Zheng KH, Dweck MR. Serum lipoprotein(a) and bioprosthetic aortic valve degeneration. Eur Heart J Cardiovasc Imaging 2023; 24:759-767. [PMID: 36662130 PMCID: PMC10229296 DOI: 10.1093/ehjci/jeac274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 12/29/2022] [Indexed: 01/21/2023] Open
Abstract
AIMS Bioprosthetic aortic valve degeneration demonstrates pathological similarities to aortic stenosis. Lipoprotein(a) [Lp(a)] is a well-recognized risk factor for incident aortic stenosis and disease progression. The aim of this study is to investigate whether serum Lp(a) concentrations are associated with bioprosthetic aortic valve degeneration. METHODS AND RESULTS In a post hoc analysis of a prospective multimodality imaging study (NCT02304276), serum Lp(a) concentrations, echocardiography, contrast-enhanced computed tomography (CT) angiography, and 18F-sodium fluoride (18F-NaF) positron emission tomography (PET) were assessed in patients with bioprosthetic aortic valves. Patients were also followed up for 2 years with serial echocardiography. Serum Lp(a) concentrations [median 19.9 (8.4-76.4) mg/dL] were available in 97 participants (mean age 75 ± 7 years, 54% men). There were no baseline differences across the tertiles of serum Lp(a) concentrations for disease severity assessed by echocardiography [median peak aortic valve velocity: highest tertile 2.5 (2.3-2.9) m/s vs. lower tertiles 2.7 (2.4-3.0) m/s, P = 0.204], or valve degeneration on CT angiography (highest tertile n = 8 vs. lower tertiles n = 12, P = 0.552) and 18F-NaF PET (median tissue-to-background ratio: highest tertile 1.13 (1.05-1.41) vs. lower tertiles 1.17 (1.06-1.53), P = 0.889]. After 2 years of follow-up, there were no differences in annualized change in bioprosthetic hemodynamic progression [change in peak aortic valve velocity: highest tertile [0.0 (-0.1-0.2) m/s/year vs. lower tertiles 0.1 (0.0-0.2) m/s/year, P = 0.528] or the development of structural valve degeneration. CONCLUSION Serum lipoprotein(a) concentrations do not appear to be a major determinant or mediator of bioprosthetic aortic valve degeneration.
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Affiliation(s)
- Simona B Botezatu
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Chancellor's Building, Little France Crescent, EH16 4SB, Edinburgh, UK
- University of Medicine and Pharmacy “Carol Davila”, Cardiology Department, Euroecolab, 258 Fundeni Road, District 2, 022238, Bucharest, Romania
| | - Evangelos Tzolos
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Chancellor's Building, Little France Crescent, EH16 4SB, Edinburgh, UK
| | - Yannick Kaiser
- Department of Vascular Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105, Amsterdam, the Netherlands
| | - Timothy R G Cartlidge
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Chancellor's Building, Little France Crescent, EH16 4SB, Edinburgh, UK
| | - Jacek Kwiecinski
- Department of Interventional Cardiology and Angiology, Institute of Cardiology, Alpejska 42 04-628, Warsaw, Poland
| | - Anna K Barton
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Chancellor's Building, Little France Crescent, EH16 4SB, Edinburgh, UK
| | - Xinming Yu
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Chancellor's Building, Little France Crescent, EH16 4SB, Edinburgh, UK
| | - Michelle C Williams
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Chancellor's Building, Little France Crescent, EH16 4SB, Edinburgh, UK
| | - Edwin J R van Beek
- Edinburgh Imaging, Queen's Medical Research Institute, University of Edinburgh, 47 Little France Crescent, EH16 4TJ, Edinburgh, UK
| | - Audrey White
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Chancellor's Building, Little France Crescent, EH16 4SB, Edinburgh, UK
| | - Jeffrey Kroon
- Department of Experimental Vascular Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105, Amsterdam, The Netherlands
| | - Piotr J Slomka
- Division of Artificial Intelligence in Medicine, Department of Medicine, Cedars-Sinai Medical Center, 8700 Beverly Blvd, CA 90048 Los Angeles, California, USA
| | - Bogdan A Popescu
- University of Medicine and Pharmacy “Carol Davila”, Cardiology Department, Euroecolab, 258 Fundeni Road, District 2, 022238, Bucharest, Romania
- Emergency Institute for Cardiovascular Diseases “Prof. Dr. C. C. Iliescu”, Cardiology Department, 258 Fundeni Road, District 2, 022238, Bucharest, Romania
| | - David E Newby
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Chancellor's Building, Little France Crescent, EH16 4SB, Edinburgh, UK
| | - Erik S G Stroes
- Department of Vascular Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105, Amsterdam, the Netherlands
| | - Kang H Zheng
- Department of Vascular Medicine, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105, Amsterdam, the Netherlands
| | - Marc R Dweck
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Chancellor's Building, Little France Crescent, EH16 4SB, Edinburgh, UK
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Pei J, Liu C, Yang Z, Lai Y, Zhang S, Guan T, Shen Y. Association of KATP variants with CMD and RAP in CAD patients with increased serum lipoprotein(a) levels. J Clin Endocrinol Metab 2022; 108:1061-1074. [PMID: 36469795 DOI: 10.1210/clinem/dgac709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 11/28/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
CONTEXT Refractory angina pectoris (RAP) is a specific subtype of coronary artery disease (CAD). Lipoprotein(a) [Lp(a)] and its induced coronary microvascular dysfunction (CMD) play an important role in pathogenesis of RAP, but its metabolism was mostly genetically determined. ATP-sensitive potassium channels (KATP) is involved in lipid metabolism and microvascular homeostasis, and becomes a promising target for the management of Lp(a) and its related RAP. OBJECTIVE To investigate associations of KATP variants with hyperlipoprotein(a)emia, CMD and RAP in CAD patients. DESIGN, PATIENTS, SETTINGS A total of 1,148 newly diagnosed CAD patients were prospectively selected, and divided into control [Lp(a) < 180 mg/dL] and case [Lp(a) ≥ 180 mg/dL, hyperlipoprotein(a)emia] group. METHODS 9 KATP variants were genotyped by MassARRAY system. The expression profile of exosome-derived microRNAs (exo-miRs) was identified by next-generation sequencing, and the expression levels of differentially expressed exo-miRs were evaluated by qRT-PCR in verification cohort. RESULTS Three KATP variants were associated with increased risk of hyperlipoprotein(a)emia in CAD patients as follows: rs2285676 (AA + GA genotype, adjusted OR = 1.44, 95% CI: 1.10-1.88, P = 0.008), rs1799858 (CC genotype, adjusted OR = 1.33, 95% CI: 1.03-1.73, P = 0.030), and rs141294036 (CC genotype, adjusted OR = 1.43, 95% CI: 1.10-1.87, P = 0.008). Only rs141294036 was associated with increased risk of CMD (CC genotype, adjusted OR = 1.62, 95% CI: 1.23-2.13, P = 0.001), and further with increased RAP risk (CC genotype, adjusted HR = 2.05, 95% CI: 1.22-3.43, P = 0.007) after median follow-up of 50.6-months. Between the two genotypes of rs141294036, 152 exo-miRs were significantly differentially expressed, only 10 exo-miRs (miR-7110-3p, miR-548az-5p, miR-214-3p, let-7i-5p, miR-218-5p, miR-128-3p, miR-378i, miR-625-3p, miR-128-1-5p and miR-3187-3p) were further confirmed in RAP patients with hyperlipoprotein(a)emia and CMD. CONCLUSION KATP rs141294036 may serve a potential genetic marker for hyperlipoprotein(a)emia, CMD and RAP in CAD patients.
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Affiliation(s)
- Jingxian Pei
- Department of Cardiology, the second affiliated hospital of Guangzhou Medical University, Guangzhou 510260, China
| | - Cheng Liu
- Department of Cardiology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou 510180, China
- Department of Cardiology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou 510180, China
| | - Zhengxia Yang
- Department of Electronic Business, School of Economics and Finance, South China University of Technology, Guangzhou 510006, China
| | - Yanxian Lai
- Department of Cardiology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou 510180, China
| | - Shenghui Zhang
- Department of Cardiology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou 510180, China
- Department of Cardiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou 510180, China
| | - Tianwang Guan
- Department of Cardiology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou 510180, China
| | - Yan Shen
- Department of Cardiology, Guangzhou First People's Hospital, South China University of Technology, Guangzhou 510180, China
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Deconinck A, Morra S, Glassée N, van de Borne P. Value of repeated measurements of lipoprotein (a) to assess cardiovascular risk: a retrospective study. Acta Cardiol 2022:1-7. [PMID: 35144517 DOI: 10.1080/00015385.2022.2031377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Background: High plasma concentrations of lipoprotein (a) [Lp(a)] are associated with an increased cardiovascular risk. Current guidelines recommend measurement of only a single Lp(a) in an individual's lifetime under specific circumstances to improve cardiovascular risk prediction. Accordingly, the question raised is the number of false positives and negatives missed through only a single measurement.Methods: All Lp(a) measurements between 2004 and March 2021 were retrieved from the laboratory database of the Erasme hospital. Only patients with repeated measurement were included. The first and subsequent Lp(a) measurement were compared. Two different cohorts were studied as a result of a change in Lp(a) determination methodology (n = 2049 and n = 309, respectively). The effects of a third Lp(a) measurement were assessed through binary analyses (n = 678). The 180 mg/dl (430 nmol/L) threshold recommended in the ESC guidelines was assessed first. Analysis was repeated for 100, 70 and 50 mg/dl thresholds of raised Lp(a) levels.Results: A low rate of false negatives (0.8%-1%) and false positives (0.6-0.3%) were revealed with two Lp(a) measurements. There was no difference in regards to the divergent Lp(a) thresholds nor the measurement of Lp(a) on two or three occasions.Conclusion: The present study showed Lp(a) determination to be reproducible. A single measurement is sufficient to assess if a patient exceeds various cut-off values of elevated Lp(a) levels.
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Affiliation(s)
- Axelle Deconinck
- Department of Cardiology, Erasme University Hospital, Brussels, Belgium
| | - Sofia Morra
- Department of Cardiology, Erasme University Hospital, Brussels, Belgium
| | - Nina Glassée
- European Organisation for Research and Treatment of Cancer, Brussels, Belgium
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