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Jabandziev P, Hubacek JA, Michalek J, Jouza M, Papez J, Pecl J, Slaba K, Slaby O, Urik M, Aulicka S, Kunovsky L, Michalek J, Dominik P, Kratochvil M, Klucka J, Stourac P. A Tagging Polymorphism in Fat Mass and Obesity-Associated ( FTO) Gene Is Associated with Sepsis Status in Children. Rom J Intern Med 2024; 0:rjim-2024-0008. [PMID: 38470396 DOI: 10.2478/rjim-2024-0008] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2024] [Indexed: 03/13/2024]
Abstract
INTRODUCTION Sepsis is one of the most common causes of death in patients admitted to intensive care units (ICUs). The development of sepsis is significantly influenced by genetic predisposition. In this study, we highlight a potential association between a variant of the fat mass and obesity-associated (FTO) gene and risk of sepsis in children and adolescents. METHODS We investigated a first-intron tagging FTO polymorphism (rs17817449) by comparing a severe condition (SC) group, comprising 598 paediatric patients (ages 0-19 years) admitted to an ICU with fever, systemic inflammatory response syndrome (SIRS), sepsis, severe sepsis, septic shock, or multiple organ dysfunction syndrome (MODS), with a control group consisting of 616 healthy young adults. RESULTS We observed a lower prevalence (p < 0.01; OR = 0.59, 95% CI = 0.39-0.87) of the FTO TT genotype in febrile and SIRS patients compared to patients with severe illness. There was a borderline trend towards a lower prevalence of the FTO TT genotype in the control group compared to the SC group (p < 0.09, OR = 0.81, 95% CI = 0.62-1.06). CONCLUSIONS Our findings suggest that rs17817449, a common FTO polymorphism, may be a predictor of sepsis in paediatric patients, and that higher body weight is protective against this clinical complication.
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Affiliation(s)
- Petr Jabandziev
- 1Department of Pediatrics, University Hospital Brno, Černopolní 212/9, 625 00, Brno, Czech Republic
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 3Central European Institute of Technology, Žerotínovo nám. 617/9, 601 77, Brno, Czech Republic
| | - Jaroslav Alois Hubacek
- 4Experimental Medicine Centre, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, 140 21, Prague, Czech Republic
- 5Third Department of Internal Medicine, First Faculty of Medicine, Charles University, U Nemocnice 1, 121 08, Prague, Czech Republic
| | - Jaroslav Michalek
- 6Department of Quantitative Methods, University of Defence, Kounicova 156/65, 662 10, Brno, Czech Republic
| | - Martin Jouza
- 1Department of Pediatrics, University Hospital Brno, Černopolní 212/9, 625 00, Brno, Czech Republic
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Jan Papez
- 1Department of Pediatrics, University Hospital Brno, Černopolní 212/9, 625 00, Brno, Czech Republic
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Jakub Pecl
- 1Department of Pediatrics, University Hospital Brno, Černopolní 212/9, 625 00, Brno, Czech Republic
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Katerina Slaba
- 1Department of Pediatrics, University Hospital Brno, Černopolní 212/9, 625 00, Brno, Czech Republic
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Ondrej Slaby
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 3Central European Institute of Technology, Žerotínovo nám. 617/9, 601 77, Brno, Czech Republic
| | - Milan Urik
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Stefania Aulicka
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Lumir Kunovsky
- 7Department of Gastroenterology and Internal Medicine, University Hospital Brno, Jihlavská 340, 625 00, Brno, Czech Republic
- 8Department of Surgery, University Hospital Brno, Jihlavská 340, 625 00, Brno, Czech Republic
| | | | - Petr Dominik
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 10Department of Pediatric Anesthesiology and Intensive Care Medicine, University Hospital Brno, Kamenice 5, 625 00, Brno, Czech Republic
| | - Milan Kratochvil
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 10Department of Pediatric Anesthesiology and Intensive Care Medicine, University Hospital Brno, Kamenice 5, 625 00, Brno, Czech Republic
| | - Jozef Klucka
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 10Department of Pediatric Anesthesiology and Intensive Care Medicine, University Hospital Brno, Kamenice 5, 625 00, Brno, Czech Republic
| | - Petr Stourac
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 10Department of Pediatric Anesthesiology and Intensive Care Medicine, University Hospital Brno, Kamenice 5, 625 00, Brno, Czech Republic
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Hubacek JA, Philipp T, Adamkova V, Majek O, Dusek L. ABCA3 and LZTFL1 Polymorphisms and Risk of COVID-19 in the Czech Population. Physiol Res 2023; 72:539-543. [PMID: 37795896 PMCID: PMC10634566 DOI: 10.33549/physiolres.935108] [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] [Received: 04/03/2023] [Accepted: 05/19/2023] [Indexed: 01/05/2024] Open
Abstract
SARS-CoV-2 infection, which causes the respiratory disease COVID-19, has spread rapidly from Wuhan, China, since 2019, causing nearly 7 million deaths worldwide in three years. In addition to clinical risk factors such as diabetes, hypertension, and obesity, genetic variability is an important predictor of disease severity and susceptibility. We analyzed common polymorphisms within the LZTFL1 (rs11385942) and ABCA3 (rs13332514) genes in 519 SARS-CoV-2-positive subjects (164 asymptomatic, 246 symptomatic, and 109 hospitalized COVID-19 survivors) and a population-based control group (N?=?2,592; COVID-19 status unknown). Rare ABCA3 AA homozygotes (but not A allele carriers) may be at a significantly increased risk of SARS-CoV-2 infection [P?=?0.003; OR (95 % CI); 3.66 (1.47-9.15)]. We also observed a borderline significant difference in the genotype distribution of the LZTFL1 rs11385942 polymorphism (P?=?0.04) between the population sample and SARS-CoV-2-positive subjects. In agreement with previous studies, a nonsignificantly higher frequency of minor allele carriers was detected among hospitalized COVID-19 subjects. We conclude that a common polymorphism in the ABCA3 gene may be a significant predictor of susceptibility to SARS-CoV-2 infection.
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Affiliation(s)
- J A Hubacek
- Experimental Medicine Centre, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Dlouha D, Blaha M, Huckova P, Lanska V, Hubacek JA, Blaha V. Long-Term LDL-Apheresis Treatment and Dynamics of Circulating miRNAs in Patients with Severe Familial Hypercholesterolemia. Genes (Basel) 2023; 14:1571. [PMID: 37628623 PMCID: PMC10454435 DOI: 10.3390/genes14081571] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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] [Received: 06/30/2023] [Revised: 07/26/2023] [Accepted: 07/29/2023] [Indexed: 08/27/2023] Open
Abstract
Lipoprotein apheresis (LA) is a therapeutic option for patients with severe hypercholesterolemia who have persistently elevated LDL-C levels despite attempts at drug therapy. MicroRNAs (miRNAs), important posttranscriptional gene regulators, are involved in the pathogenesis of atherosclerosis. Our study aimed to monitor the dynamics of twenty preselected circulating miRNAs in patients under long-term apheresis treatment. Plasma samples from 12 FH patients (men = 50%, age = 55.3 ± 12.2 years; mean LA overall treatment time = 13.1 ± 7.8 years) were collected before each apheresis therapy every sixth month over the course of four years of treatment. Eight complete follow-up (FU) samples were measured in each patient. Dynamic changes in the relative quantity of 6 miRNAs (miR-92a, miR-21, miR-126, miR-122, miR-26a, and miR-185; all p < 0.04) during FU were identified. Overall apheresis treatment time influenced circulating miR-146a levels (p < 0.04). In LDLR mutation homozygotes (N = 5), compared to heterozygotes (N = 7), we found higher plasma levels of miR-181, miR-126, miR-155, and miR-92a (all p < 0.03). Treatment with PCSK9 inhibitors (N = 6) affected the plasma levels of 7 miRNAs (miR-126, miR-122, miR-26a, miR-155, miR-125a, miR-92a, and miR-27a; all p < 0.04). Long-term monitoring has shown that LA in patients with severe familial hypercholesterolemia influences plasma circulating miRNAs involved in endothelial dysfunction, cholesterol homeostasis, inflammation, and plaque development. The longer the treatment using LA, the better the miRNA milieu depicting the potential cardiovascular risk.
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Affiliation(s)
- Dana Dlouha
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (P.H.); (J.A.H.)
| | - Milan Blaha
- 4th Department of Internal Medicine—Hematology, University Hospital Hradec Králové, 50005 Hradec Králové, Czech Republic;
- Faculty of Medicine in Hradec Králové, Charles University, 50003 Hradec Králové, Czech Republic;
| | - Pavlina Huckova
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (P.H.); (J.A.H.)
| | - Vera Lanska
- Statistical Unit, Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic;
| | - Jaroslav Alois Hubacek
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 14021 Prague, Czech Republic; (P.H.); (J.A.H.)
- 1st Faculty of Medicine, Charles University, 12108 Prague, Czech Republic
| | - Vladimir Blaha
- Faculty of Medicine in Hradec Králové, Charles University, 50003 Hradec Králové, Czech Republic;
- 3rd Department of Internal Medicine—Metabolism and Gerontology, University Hospital Hradec Králové, 50005 Hradec Králové, Czech Republic
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Pitha J, Pithova P, Dlouha D, Hubacek JA. Macrovascular and microvacular changes in diabetes mellitus type 1 are modified by the gene for connexin 37 in men but not in women. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Diabetes mellitus type 1 (DMT1) is a strong risk factor for macrovascular and microvascular disease. These vascular pathologies can be strongly modified by genetic factors. One of intensively investigated candidate genes is the gene for connexin37 (Cx37) (C1019>T (Pro319>Ser). The role of this gene in cardiovascular disease and diabetes mellitus had been already described in several different populations, but not in patients with DMT1.
Purpose
To determine whether the presence of macrovascular and microvascular changes is modified by Cx37 gene polymorphism in middle aged men and women diagnosed with DMT1 of similar age and with similar duration of DMT1.
Methods
In 253 men (mean age 43.0±14.5 years; mean duration of diabetes 22.6±14.0 years) and 245 women (mean age 43.9±12.9 years; mean duration of diabetes 21.3±10.5 years) macrovascular disease was measured by duplex B-Mode ultrasound and classified as Belcaro score (1–4) in carotid and femoral arteries. Microvascular disease was assessed by the presence of retinopathy, nephropathy, neuropathy and diabetic foot. Cx37 gene polymorphism was established by PCR.
Results
In men, in CC homozygotes we observed more advanced macrovascular changes in carotid arteries (Belcaro score more than 2) than in CT heterozygotes/TT homozygotes (7.5 vs. 15.2%; p=0.031). No significant differences were found in changes of carotid arteries in women and in changes of femoral arteries both in men and women. Regarding microvascular changes, in men, in CC homozygotes, the diabetic foot was diagnosed more frequently than in CT heterozygotes/TT homozygotes (7.4 vs. 16.1%; p=0.046). No significant differences were found in women and in other types of microvascular disease both in men and women.
Conclusion
These results indicate that macrovascular and microvascular changes in DMT1 can be modified by Cx37 gene polymorphism in men, but not in women.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): This work was supported by the Ministry of Health of the Czech Republic, grant No. NU20-01-00083 and by Ministry of Health of the Czech Republic under its conceptual development of the research organization program (Institute for Clinical and Experimental Medicine–IKEM, IN 00023001. All rights reserved.
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Affiliation(s)
- J Pitha
- Institute of Clinical and Experimental Medicine , Prague , Czechia
| | - P Pithova
- Charles University of Prague , Prague , Czechia
| | - D Dlouha
- Institute of Clinical and Experimental Medicine , Prague , Czechia
| | - J A Hubacek
- Institute of Clinical and Experimental Medicine , Prague , Czechia
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Todorovova V, Dlouha L, Hubacek JA, Satny M, Adamkova V, Pitha J, Ceska R, Vrablik M. Triglycerides, polymorphisms and the risk of acute coronary syndrome in the Czech population. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Supported by Ministry of Health, Czech Republic - conceptual development of research organization 64165, General University Hospital in Prague, Czech Republic
Background and Aims
Elevated levels of plasma triglycerides (TG) have been identified as a risk factor for the development of cardiovacular disease, including acute coronary syndrome (ACS). Final TG levels are largely influenced by genetic factors. The most important genetic factors influencing TG levels in the Czech population are the polymorphisms in APOA5, GCKR, MAP3K1, CTF1, CYP26A1, LRP1, CILP2, LIPC, APOE, GALNT2 and LPL genes.
Methods
The variants in mentioned genes were analyzed in total 929 patients with ACS and 936 healthy controls (study post-MONICA). Only adult men under the age of 65 were included in the study.
Results
Plasma TG levels did not differ significantly between patients and controls (1.96 ± 1.30 mmol/L vs. 2.06 ± 1.47 mmol/L). CYP26A1 AA homozygotes (rs2068888) were more common (P <0.05; OR; 95% CI = 1.34; 1.03-1.74) among patients. The differences in the frequencies of the other variants were not statistically significant, however, with the exception of GCKR, LRP1, MAP3K1, GALNT2 and LPL variants, they were used to calculate the risk genetic score due to the higher OR value (above 1.15). Subjects with a score of 8 or more vs less than 3 occurred more frequently among patients with ACS than among controls (60% vs. 30%, P = 0.005; OR; 95% CI – 2.03; 1.24 – 3.31).
Conclusions
Genetic score calculated from six selected variants associated with plasma TG levels is a significant predictor of ACS in Czech Caucasian males.
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Affiliation(s)
| | - L Dlouha
- Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - JA Hubacek
- Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - M Satny
- General University Hospital, Prague, Czechia
| | - V Adamkova
- Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - J Pitha
- Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - R Ceska
- General University Hospital, Prague, Czechia
| | - M Vrablik
- General University Hospital, Prague, Czechia
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Hubacek JA, Adamkova V, Dlouha D, Pitha J. Cholesterol and the risk of acute coronary syndrome. Mendelian randomisation in the Czech population. Eur J Prev Cardiol 2022. [DOI: 10.1093/eurjpc/zwac056.320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Ministry of Health, Czech Republic
Introduction
Increased plasma cholesterol levels are considered as a risk factor for the development of cardiovascular diseases, including acute coronary syndrome (ACS). However, observational studies in recent years have often found no increased LDL-cholesterol values in ACS patients compared to controls. Final cholesterol levels are largely modified by genetic factors, so they can be used to demonstrate (based on Mendelian randomization) whether the link between plasma cholesterol and MI risk is still present.
Methods
In our study, we analysed LDL-R (rs6511720), CILP2/PBX4 (rs16996148), APOB (rs693) and SORT-1 (rs646776) variants in a total of 939 patients with ACS and 1,191 healthy controls (post-MONICA study). Only men aged 18-65 years were included in the study.
Results
Patients with ACS had significantly lower total cholesterol levels than controls (4.8 ± 1.1 vs. 5.7 ± 1.1 mmol / L; P <0.001). Total and LDL-cholesterol were not higher in patients even after adjusting for age, BMI and dyslipidemic treatment. We confirmed a significant effect of all analysed variants on LDL-cholesterol levels (all P <0.01). None of the four analysed variants significantly affected the risk of MI (P values between 0.10 and 0.58). Individuals with at least seven cholesterol-raising alleles had a slightly increased risk of ACS compared to others (OR, 95% CI; 1.26, 1.06-1.51; P = 0.01).
Conclusion
Variants within the genes for LDL-R, CILP2 / PBX4, APOB and SORT-1 are significant genetic determinants of LDL-cholesterol levels in the population of Czech men. After a population-wide reduction in cholesterol levels, these levels no longer seem to be a serious problem in determining ACS, and interventions to reduce other types of risk should be given more attention.
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Affiliation(s)
- JA Hubacek
- Institute for Clinical and Experimental Medicine (IKEM), Prague, Czechia
| | - V Adamkova
- Institute for Clinical and Experimental Medicine (IKEM), Prague, Czechia
| | - D Dlouha
- Institute for Clinical and Experimental Medicine (IKEM), Prague, Czechia
| | - J Pitha
- Institute for Clinical and Experimental Medicine (IKEM), Prague, Czechia
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Titarenko AV, Shishkin SV, Shcherbakova LV, Verevkin EG, Shapkina MY, Hubacek JA, Bobak M, Malyutina SK. [Cognitive functions and modifiable risk factors for chronic non-communicable diseases in ageing in a Russian population sample.]. Adv Gerontol 2022; 35:102-109. [PMID: 35522115] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We aimed to investigate the relationship between the indicators of cognitive functions (CF) and modifiable risk factors for chronic non-communicable diseases (NCD) in a cross-sectional analysis in the urban Russian population sample aged 55-84 years. The study investigated a random sample of 3 153 people (men and women 55-84 years old) from a general population cohort of Novosibirsk residents; a sample was examined within the international project HAPIEE. The study protocol included standardized neuropsychological tests (quantitative assessment of memory, semantic verbal fluency, attention and processing speed) and standardized assessment of risk factors, history and treatment of cardiovascular disease and NCD. In cross-sectional analysis we observed a positive relationship of CF indices with level of education and an inverse relationship with metabolic risk factors and smoking in both sexes. The level of total cholesterol and moderate alcohol consumption had positive relationship with CF indices in women. These associations were independent from age and other factors.
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Affiliation(s)
- A V Titarenko
- The Institute of Internal and Preventive Medicine - branch of «The Federal Research Center Institute of Cytology and Genetics the Siberian Branch of the Russian Academy of Sciences», 175/1 B.Bogatkov str., Novosibirsk 630089, Russian Federation, e-mail:
| | - S V Shishkin
- The Institute of Internal and Preventive Medicine - branch of «The Federal Research Center Institute of Cytology and Genetics the Siberian Branch of the Russian Academy of Sciences», 175/1 B.Bogatkov str., Novosibirsk 630089, Russian Federation, e-mail:
| | - L V Shcherbakova
- The Institute of Internal and Preventive Medicine - branch of «The Federal Research Center Institute of Cytology and Genetics the Siberian Branch of the Russian Academy of Sciences», 175/1 B.Bogatkov str., Novosibirsk 630089, Russian Federation, e-mail:
| | - E G Verevkin
- The Institute of Internal and Preventive Medicine - branch of «The Federal Research Center Institute of Cytology and Genetics the Siberian Branch of the Russian Academy of Sciences», 175/1 B.Bogatkov str., Novosibirsk 630089, Russian Federation, e-mail:
| | - M Y Shapkina
- The Institute of Internal and Preventive Medicine - branch of «The Federal Research Center Institute of Cytology and Genetics the Siberian Branch of the Russian Academy of Sciences», 175/1 B.Bogatkov str., Novosibirsk 630089, Russian Federation, e-mail:
| | - J A Hubacek
- Institute for Clinical and Experimental Medicine, Videnska 1958/9, Prague, 14021, Czech Republic
| | - M Bobak
- University College London, Torrington Place, 1-19, WC1E6BT, London, UK
| | - S K Malyutina
- The Institute of Internal and Preventive Medicine - branch of «The Federal Research Center Institute of Cytology and Genetics the Siberian Branch of the Russian Academy of Sciences», 175/1 B.Bogatkov str., Novosibirsk 630089, Russian Federation, e-mail:
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Malyutina SK, Mazdorova EV, Shapkina MY, Avdeeva EM, Simonova GI, Hubacek JA, Bobak M, Nikitin YP, Ryabikov AN. [The frequency and profile of drug treatment in subjects with dyslipidemias and cardimetabolic diseases in an urban russian population older then 55 years]. Kardiologiia 2021; 61:49-58. [PMID: 35057721 DOI: 10.18087/cardio.2021.12.n1558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/23/2021] [Accepted: 05/28/2021] [Indexed: 06/14/2023]
Abstract
Aim To analyze frequency and profile of the lipid-lowering therapy (LLT) in patients with dyslipidemia (DLP) and cardiometabolic diseases (CMD) in a population sample aged 55-84 years at the current time (2015-2017).Material and methods Despite guidelines on DLP treatment and the availability of effective and safe lipid-lowering drugs, control of DPL in primary and secondary prevention of cardiovascular diseases (CVD) is insufficient. Knowledge of the level of pharmaceutical correction of DLP in the Russian population is limited; it requires an LLT assessment in various regions and in a wide age range, and a regular monitoring taking into account changing approaches to the correction of DLP. A random population of men and women aged 55-84 years (n=3 896) was evaluated in Novosibirsk in 2015-2017 (project HAPIEE). A joint DLP category was established as low-density lipoprotein cholesterol (LDL-C) ≥3.0 mmol/l, or total cholesterol (TC) ≥5.0 mmol/l, or triglycerides (TG) ≥1.7 mmol/l, or LLT. The combined group of DLP and CMD included ischemic heart disease (IHD), type 2 diabetes mellitus (DM2), and DLP. Regular LLD treatment for the recent 12 months, excluding the dosage of medicines, was assessed using the Anatomic Therapeutic Chemical (ATC) classification. The conditional control of serum lipids was taken as the achievement of LDL-C <3.0 mmol/l, TC <5.0 mmol/l, and TG <1.7 mmol/l.Results In the study sample, the total prevalence of DLP and CMD was 88 % (82.8 % for men and 91.3 % for women, p<0.001). 48.3% of patients in the IHD group, 35.0% in the DM2 group, 29.4% in the DLP group, and 32.8% in the CMD group took LLT. Control of serum lipids was achieved in 18.3% (37.9 % of patients on LLT) of patients with IHD; 9 % (25.6 % of patients on LLT) of patients with DM2; 7.3 % (24.8 % of patients on LLT) of patients with DLP; and 9.0 % (27.6 % of patients on LLTсреди) in the DLP and CMD group. Women with DM2 and DLP more frequently achieved lipid control than men (p<0.001). 98.7 % of study participants took statins as LLT.Conclusion In the sample of urban population aged 55-84 years in 2015-2017, 90 % of patients had DLP or CMD, and at least ¾ of them required blood lipid control. The lipid control was achieved in every fifth IHD patient and in approximately 40% of those who took LLT. For DM2 or DLP patients, the lipid control was achieved in every tenth patient and in approximately 25% of those receiving LLT. Frequency of lipid control in IHD patients was comparable for men and women; in DM2 and DLP, men less frequently achieved the lipid control than women. About 70% of patients in the combined DLP and CMD group and more than 50% of IHD patients did not take LLT, which considerably contributed to the insufficient lipid control in primary and secondary prevention of atherosclerotic CVDs in this population.
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Affiliation(s)
- S K Malyutina
- Research Institute of Internal and Preventive Medicine, Branch, Federal Research Center, Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
| | - E V Mazdorova
- Research Institute of Internal and Preventive Medicine, Branch, Federal Research Center, Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
| | - M Yu Shapkina
- Research Institute of Internal and Preventive Medicine, Branch, Federal Research Center, Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
| | - E M Avdeeva
- Research Institute of Internal and Preventive Medicine, Branch, Federal Research Center, Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
| | - G I Simonova
- Research Institute of Internal and Preventive Medicine, Branch, Federal Research Center, Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
| | - J A Hubacek
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague
| | - M Bobak
- University College London, London
| | - Yu P Nikitin
- Research Institute of Internal and Preventive Medicine, Branch, Federal Research Center, Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
| | - A N Ryabikov
- Research Institute of Internal and Preventive Medicine, Branch, Federal Research Center, Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
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Abstract
Genetic predispositions may influence geographical and interethnic differences in COVID-19 prevalence and mortality in affected populations. Of the many genes implicated in COVID-19 progression, a substantial number have no direct functional link on virus transfer/viability or on the host immune system. To address this knowledge deficit, a large number of in silico studies have recently been published. However, the results of these studies often contradict the findings of studies involving real patients. For example, the ACE2 has been shown to play an important role in regulating coronavirus entry into cells, but none of its variations have been directly associated with COVID-19 susceptibility or severity. Consistently was reported that increased risk of COVID-19 is associated with blood group A and with the APOE4 allele. Among other genes with potential impacts are the genes for CCR5, IL-10, CD14, TMPRSS2 and angiotensin-converting enzyme. Variants within the protein-coding genes OAS1 and LZTFL1 (transferred to the human genome from Neanderthals) are understood to be among the strongest predictors of disease severity. The intensive research efforts have helped to identify the genes and polymorphisms that contribute to SARS-CoV-2 infection and COVID-19 severity.
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Affiliation(s)
- J A Hubacek
- Experimental Medicine Centre, Institute for Clinical and Experimental Medicine, Prague 4, Czech Republic.
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10
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Titarenko AV, Shishkin SV, Shcherbakova LV, Verevkin EG, Shapkina MYU, Hubacek JA, Bobak M, Malyutina SK. Cardiovascular disease risk factors and cognitive functions in older Russian adults. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The prevalence of cardiovascular diseases (CVD) is increasing due to the global trend towards an aging population. CVD and cerebrovascular disease have a negative impact on cognitive health, and CVD risk factors may also be associated with cognitive decline with aging.
Purpose
To investigate associations of modifiable risk factors for CVD with cognitive functions (CF) in older Russian adults.
Methods
A random population sample (3153 men and women, aged 55–84 years) was examined in our city in the 3rd wave of the Russian arm of the international project HAPIEE (Health, Alcohol, and Psychosocial Factors in Eastern Europe). We used standardized epidemiological and instrumental methods for assessment of risk factors, history and treatment of CVD. Cognitive tests included the assessment of memory indicators (immediate and delayed recall), semantic verbal fluency (animal naming), attention, concentration and processing speed (letter cancellation task). Associations between CVD risk factors and cognitive indices were analyzed cross-sectionally.
Results
Mean age in men was of 69.2±7.0 years (n=1198), in women - 69.7±6.9 (n=1955). In both sexes all cognitive domains were positively associated with education and negatively with age (p<0.001 for all cases). In men, after adjusting for health and lifestyle conditions, systolic blood pressure had inverse association with semantic verbal fluency (p=0.015); level of plasma glucose (p=0.003), waist-to-hip ratio (p=0.013) and smoking (p=0.028) were negative associated with letter cancellation task. In multivariate analyses in women, frequency of alcohol consumption (p<0.001 for all CF) and total cholesterol (p=0.042 for memory scores; p=0.001 for letter cancellation task) had positive relationship with CF indices, waist-to-hip ratio (p=0.002 for memory scores, p=0.038 for semantic fluency), level of plasma glucose (p=0.002 for memory scores, p<0.001 for letter cancellation task) and smoking (p<0.001 for letter cancellation task) had inverse relationships with cognition.
Conclusion
Our results show that metabolic risk factors (systolic blood pressure, plasma glucose, waist-to-hip ratio) and smoking had inverse relationship with CF indices in both sexes, and the level of blood lipids (total cholesterol and high-density lipoprotein cholesterol) and frequency of alcohol consumption (more pronounced in women) had positive associations with cognitive domains. These associations were independent from age. In multivariate analyses, some of these correlations were attenuated, and most associations were at least partly mediated by education. These findings highlight the importance of managing CVD risk factors to prevent cognitive decline.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Russian Foundation for Basic Research (20-313-90016),Russian Academy of Sciences (AAAA-A17-117112850280-2)
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Affiliation(s)
- A V Titarenko
- Institute of Internal and Preventive Medicine - branch of ICG SB RAS, Novosibirsk, Russian Federation
| | - S V Shishkin
- Institute of Internal and Preventive Medicine - branch of ICG SB RAS, Novosibirsk, Russian Federation
| | - L V Shcherbakova
- Institute of Internal and Preventive Medicine - branch of ICG SB RAS, Novosibirsk, Russian Federation
| | - E G Verevkin
- Institute of Internal and Preventive Medicine - branch of ICG SB RAS, Novosibirsk, Russian Federation
| | - M Y U Shapkina
- Institute of Internal and Preventive Medicine - branch of ICG SB RAS, Novosibirsk, Russian Federation
| | - J A Hubacek
- Institute for Clinical and Experimental Medicine, Prague, Czechia
| | - M Bobak
- University College London, London, United Kingdom
| | - S K Malyutina
- Institute of Internal and Preventive Medicine - branch of ICG SB RAS, Novosibirsk, Russian Federation
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11
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Ryabikov A, Mazdorova E, Shapkina M, Avdeeva E, Simonova G, Hubacek JA, Bobak M, Malyutina S. The frequency and profile of lipid lowering treatment in a contemporary Russian population. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Despite of guidelines for management of dyslipidemias (DLP) and the availability of effective and safe lipid lowering drugs (LLD), about one half of CVD patients do not reach the target lipid levels. The knowledge on DLP management in Russian population is limited.
Objective
To analyze the frequency and profile of LLD therapy in subjects with DLP and cardiometabolic diseases in a contemporary Russian population.
Methods
A random population sample of men and women 55–84 years old (n=3898) was examined in 2015–17 in the Russian arm of the HAPIEE project. A composite dysmetabolic group included DLP (total cholesterol, TC ≥5 mmo/l or low-density lipoprotein cholesterol, LDLC ≥3 mmol/l or triglycerides, TG ≥1.7 mmol/l) and/or coronary heart disease (CHD) and/or diabetes mellitus type 2 (DM2). Regular medication intake for 12 months was coded by ATC.
Results
In studied population sample 88% of subjects had dysmetabolic disorders (DLP - 83.1%, CHD - 14.9%, DM2- 20.8%); among them 32.8% subjects received LLD therapy (21.2% in men vs. 39.4% in women, p<0.001) and 17.1% did not report the status of LLD receiving. The frequency of LLD use in CHD group was 48,3%, in DM2 – 35,0%, in DLP – 29.4%. Among named LLD, statins were predominantly used (98%). Lipids control was achieved among subjects with CHD in 18.3% (37.9% among those receiving LLD); among DM2 - in 9.0% (25.6%); among DLP without CHD or DM2 – in 7.3% (24.8%).
Conclusion
In an urban population sample aged 55–84 examined in 2015–17, more than one half of subjects with dysmetabolic disorders (CHD, DM2, DLP) did not receive LLD. Among those receiving lipid-lowering therapy, the lipid control was achieved in about 40% of participants with CHD, and in every forth participant with DM2 or DLP. The lack of lipid control is likely to contribute high rate of atherosclerotic CVD in studied population.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): Russian Foundation of Basic Research; Russian Academy of Sciences
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Affiliation(s)
- A Ryabikov
- Research Institute of Internal and Preventive Medicine - Branch of IC&G SB RAS, Novosibirsk, Russian Federation
| | - E Mazdorova
- Research Institute of Internal and Preventive Medicine - Branch of IC&G SB RAS, Novosibirsk, Russian Federation
| | - M Shapkina
- Research Institute of Internal and Preventive Medicine - Branch of IC&G SB RAS, Novosibirsk, Russian Federation
| | - E Avdeeva
- Research Institute of Internal and Preventive Medicine - Branch of IC&G SB RAS, Novosibirsk, Russian Federation
| | - G Simonova
- Research Institute of Internal and Preventive Medicine - Branch of IC&G SB RAS, Novosibirsk, Russian Federation
| | - J A Hubacek
- Institute for Clinical and Experimental Medicine, Center for Experimental Medicine, Prague, Czechia
| | - M Bobak
- University College London, Institute of Epidemiology and Health Care, London, United Kingdom
| | - S Malyutina
- Research Institute of Internal and Preventive Medicine - Branch of IC&G SB RAS, Novosibirsk, Russian Federation
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12
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Kníže M, Piťha J, Hubacek JA, Fait T. The role of connexin 37 polymorphism in spontaneous abortion. Physiol Res 2021; 70:469-474. [PMID: 33982579 PMCID: PMC8820557 DOI: 10.33549/physiolres.934566] [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] [Received: 08/29/2020] [Accepted: 03/01/2021] [Indexed: 11/25/2022] Open
Abstract
Among unique cardiovascular risk factors in women are complications during pregnancy, including miscarriage. Important risk factor is also genetic background. One of powerful candidate genes for cardiovascular disease of atherosclerotic origin (aCVD) is gene for connexin 37 (Cx37) with strong gene-environment interaction including smoking status, that is also strong risk factor for complications in pregnancy including spontaneous abortion (SA). We analyzed association between SA and Cx37 gene polymorphism (1019C>T; Pro319Ser) in 547 fetuses and its potential interaction with smoking status of mothers. Using genetic analyses from women from general population as controls, ORs for T allele, found in our previous studies to be protective against aCVD, were calculated. T allele carriers (fetuses), had OR 0.91 (95 % CI 0.72-1.14) and no interaction with smoking was observed. In conclusion, no significant association between Cx37 polymorphism and SA was observed and no modifying effect of smoking status on this association was detected.
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Affiliation(s)
- M Kníže
- Department of Obstetrics and Gynecology, Motol University Hospital, Prague 5, Czech Republic.
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13
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Hubacek JA, Dlouha L, Dusek L, Majek O, Adamkova V. Apolipoprotein E4 Allele in Subjects with COVID-19. Gerontology 2021; 67:320-322. [PMID: 33965962 PMCID: PMC8247822 DOI: 10.1159/000516200] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 03/26/2021] [Indexed: 12/03/2022] Open
Affiliation(s)
- Jaroslav Alois Hubacek
- Experimental Medicine Centre, Institute for Clinical and Experimental Medicine, Prague, Czechia.,Third Department of Internal Medicine, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Lucie Dlouha
- Experimental Medicine Centre, Institute for Clinical and Experimental Medicine, Prague, Czechia.,Department of Anthropology and Human Genetics, Faculty of Science, Charles University, Prague, Czechia
| | - Ladislav Dusek
- Institute of Health Information and Statistics of the Czech Republic, Prague, Czechia.,Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Ondrej Majek
- Institute of Health Information and Statistics of the Czech Republic, Prague, Czechia.,Institute of Biostatistics and Analyses, Faculty of Medicine, Masaryk University, Brno, Czechia
| | - Vera Adamkova
- Department of Preventive Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czechia.,Department of Nephrology, First Faculty of Medicine, Charles University, Prague, Czechia
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14
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Hubacek JA, Dusek L, Majek O, Adamek V, Cervinkova T, Dlouha D, Pavel J, Adamkova V. CCR5Delta32 deletion as a protective factor in Czech first-wave COVID-19 subjects. Physiol Res 2021; 70:111-115. [PMID: 33728925 DOI: 10.33549/physiolres.934647] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Infection by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes coronavirus disease (COVID-19), has spread widely around the globe. Significant inter-individual differences have been observed during the course of the infection, which suggests that genetic susceptibility may be a contributing factor. CC chemokine receptor 5 (CCR5), which acts as a co-receptor for the entry of HIV-1 into cells, is promising candidate whose can have an influence on SARS-CoV-2 infection. A genetic mutation known as CCR5Delta32, consisting of a 32-nucleotide deletion, encodes a truncated protein that protects homozygous carriers of the deletion from HIV-1 infection. Similarly, inhibition of CCR5 seems to be protective against COVID-19. In our study, we successfully genotyped 416 first-wave SARS-CoV-2-positive infection survivors (164 asymptomatic and 252 symptomatic) for CCR5?32, comparing them with a population based sample of 2,404 subjects. We found the highest number (P=0.03) of CCR5Delta32 carriers in SARS-CoV-2-positive/COVID-19-asympto-matic subjects (23.8 %) and the lowest number in SARS-CoV-2-positive/COVID-19-symptomatic patients (16.7 %), with frequency in the control population in the middle (21.0 %). We conclude that the CCR5?32 I/D polymorphism may have the potential to predict the severity of SARS-CoV-2 infection.
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Affiliation(s)
- J A Hubacek
- Experimental Medicine Centre, Institute for Clinical and Experimental Medicine, Prague 4, Czech Republic.
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15
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Kacer P, Adamkova V, Hubacek JA, Cervinkova T, Adamek V, Kralova Lesna I, Lanska V, Pirk J. Post-infarction left ventricular free wall rupture: 12-years experience from the Cardiac Centre of the Institute of Clinical and Experimental Medicine in Prague, Czech Republic. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2020; 165:408-415. [PMID: 32808602 DOI: 10.5507/bp.2020.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 05/06/2020] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Post-infarction left ventricular free wall rupture (LVFWR) is a feared and catastrophic complication of myocardial infarction that carries a high surgical and hospital mortality. Due to the rarity of this complication, little information exists on surgical treatment and outcomes. Goal and Methods. The goal of this study was to present our experience with LVFWR. We present a retrospective cohort of 19 consecutive patients who were surgically treated in the Cardiac Centre of the Institute of Clinical and Experimental Medicine in Prague between January 2006 and December 2017. RESULTS Thirty-day mortality was 26%. Five patients died. Four patients died in the operating theatre and one patient on the ninth postoperative day following re-rupture. Seventy-four percent of the patient cohort survived and were discharged from hospital. The median length of follow-up was 45 months (range 0.75-150). No patient died during follow-up. Median postoperative ejection fraction was 45% (range 25-65%). Angina pectoris and dyspnea were investigated during follow-up and graded according to the Canadian cardiology society (CCS) and the New York Heart Association (NYHA) classifications. Fourteen patients had CCS class I, eight patients had NYHA class I dyspnea and six patients had NYHA class II. Re-rupture occurred after hospital discharge in one patient one month after the original surgery. The patient was treated successfully by urgent surgical intervention. CONCLUSION LVFWR is a catastrophic and challenging complication of myocardial infarction. Good outcomes can be achieved by rapid diagnosis and urgent surgical intervention as shown by our results.
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Affiliation(s)
- Petr Kacer
- Department of Cardiac Surgery, University Hospital Kralovske Vinohrady, Third Faculty of Medicine, Charles University, Prague, Czech Republic.,Cardiac Centre, Institute of Clinical and Experimental Medicine, Prague, Czech Republic
| | - Vera Adamkova
- Cardiac Centre, Institute of Clinical and Experimental Medicine, Prague, Czech Republic
| | | | - Tereza Cervinkova
- Cardiac Centre, Institute of Clinical and Experimental Medicine, Prague, Czech Republic
| | | | - Ivana Kralova Lesna
- Cardiac Centre, Institute of Clinical and Experimental Medicine, Prague, Czech Republic
| | - Vera Lanska
- Cardiac Centre, Institute of Clinical and Experimental Medicine, Prague, Czech Republic
| | - Jan Pirk
- Cardiac Centre, Institute of Clinical and Experimental Medicine, Prague, Czech Republic
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16
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Jurcikova-Novotna L, Mrazova L, Mičová K, Friedecký D, Hubacek JA, Poledne R. Global DNA methylation in rats´ liver is not affected by hypercholesterolemic diet. Physiol Res 2020; 69:347-252. [PMID: 32199015 DOI: 10.33549/physiolres.934313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Increased plasma cholesterol levels are listed between the major atherosclerosis risk factors. The final plasma cholesterol levels result from the interplay between the genetic and environmental (diet, physical activity) factors. Little is known, how dietary factor influence epigenetics. We have analyzed, if an over-generation feeding of rat with cholesterol influences total liver-DNA methylation, and if total liver-DNA methylation differ between the different rat strains (Prague hereditary hypercholesterolemic rats, Prague hereditary hypertriglyceridemic rats and Wistar Kyoto rats). The animals were feed with high fat (additional 5 % over normal capacity) high cholesterol (2 %) diet for 14 days. DNA methylation in the liver tissue in different generations was analyzed using the liquid chromatography coupled with tandem mass spectrometry. We have not observed any significant changes in total liver-DNA methylation over the 9 generations of animals feed by fat/cholesterol enriched diet. Additionally, there were no differences in DNA methylation between different rat strains. In animal model, the dietary changes (hypercholesterolemic diet) not significantly influence the total DNA methylation status within the liver.
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Affiliation(s)
- L Jurcikova-Novotna
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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17
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Kacer P, Pirk J, Lanska V, Hubacek JA, Adamek V, Cervinkova T, Belohoubek J, Auzky O, Adamkova V. Genetic Markers at ANRIL, FTO and 2q36.3 Locus in Czech Patients Undergoing Coronary Artery Bypass Graft Surgery. Folia Biol (Praha) 2020; 66:148-153. [PMID: 33745262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Coronary artery bypass graft (CABG) surgery is one of the most commonly performed operations worldwide. We compared genotype frequencies of three major cardiovascular disease (CVD)-associated genetic markers (ANRIL, FTO and 2q36.3 locus) between 753 patients who underwent CABG at the Institute for Clinical and Experimental Medicine (Prague, Czech Republic) and 2,559 controls from the Czech post-MONICA study. Subjects with at least one major A allele in the rs10757274 polymorphism (ANRIL) were more prevalent in patients after CABG than in the controls (81.7 % vs 72.7 %; OR [95 % CI] 1.67 [1.35-2.05]; P < 0.0001). In contrast, variants within the FTO gene (OR 0.87; 95 % CI, 0.70-1. 09 in a TT vs. GG comparison, P = 0.24) and 2q36.3 locus (OR 1.16; 95% CI, 0.98-1.37 in a +A vs. CC comparison, P = 0.08) were not significantly associated with CVD in our study. Variants were not associated with anthropometric, biochemical, or clinical characteristics within the patient group. Our study suggests that patients with CABG are more commonly carriers of some but not all CVD-associated alleles.
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Affiliation(s)
- P Kacer
- Department of Cardiac Surgery, Královské Vinohrady University Hospital in Prague, Third Faculty of Medicine, Charles University, Prague, Czech Republic
- Cardiocentre; Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - J Pirk
- Cardiocentre; Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - V Lanska
- Medical Statistics Unit; Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - J A Hubacek
- Centre for Experimental Medicine; Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - V Adamek
- Department of Preventive Cardiology; Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - T Cervinkova
- Department of Preventive Cardiology; Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - J Belohoubek
- Department of Preventive Cardiology; Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - O Auzky
- Department of Preventive Cardiology; Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - V Adamkova
- Department of Preventive Cardiology; Institute for Clinical and Experimental Medicine, Prague, Czech Republic
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18
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Vrablik M, Hubacek JA, Dlouha D, Satny M, Adamkova V, Ceska R. Strong Association between APOA5 Gene Polymorphisms and Hypertriglyceridaemic Episodes. Folia Biol (Praha) 2019; 65:188-194. [PMID: 31903892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Plasma triglyceride (TG) levels represent a significant risk factor of cardiovascular and total mortality. Concentrations of TG in the plasma depend, to a large extent, on the genetic background, and the apolipoprotein A5 (APOA5) gene seems to be one of the most powerful players in the plasma TG metabolism regulation. In total, we analysed three tagging APOA5 (rs964184 rs662799, rs3135506) SNPs in 209 patients with plasma TG levels over 10 mmol/l (HTG) on at least one occasion and in 379 treatment-naïve controls (NTG) with plasma TG values within the normal range. Minor alleles of all three analysed APOA5 polymorphisms significantly (all P < 0.0001) increased the risk of hypertriglyceridaemia. The most significant association (P < 0.0000001) was observed for the rs964184 polymorphism, where the minor GG homozygotes had the odds ratio (OR, 95% CI) for hypertriglyceridaemia development 21.30 (8.09-56.07, P < 0.000001) in comparison with the major CC allele homozygotes. Carriers of at least one minor allele at rs3135506 had OR (95% CI) 4.19 (2.75-6.40); (P < 0.000005) for HTG development and similarly, carriers of a minor allele at rs662799 had OR (95% CI) 3.07 (2.00-4.72) (P < 0.0001). The cumulative presence of risk alleles (unweighted gene score) significantly differed between patients with episodes of high TG and controls at P < 0.0000001. There were 73 % of subjects without any of the risk alleles among the controls and 46 % in the patients. In contrast, the controls just included 3 % of subjects with score 3 and more in comparison with 18 % in HTG patients. We conclude that common APOA5 variants are very important genetic determinants of episodic hypertriglyceridaemia in the Czech population with a high potential to be applied in personalized medicine.
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Affiliation(s)
- M Vrablik
- 3rd Department of Internal Medicine, Department of Endocrinology and Metabolism, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - J A Hubacek
- Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - D Dlouha
- Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - M Satny
- 3rd Department of Internal Medicine, Department of Endocrinology and Metabolism, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - V Adamkova
- Department of Preventive Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - R Ceska
- 3rd Department of Internal Medicine, Department of Endocrinology and Metabolism, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
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19
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Shapkina M, Ryabikov A, Mazdorova E, Avdeeva E, Bobak M, Hubacek JA, Munc I, Scherbakova L, Malyutina S. P4471Age-related dynamics of atrial fibrillation during 12-year follow-up in elderly population sample. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Shapkina
- Institute of Internal and Preventive Medicine, Novosibirsk, Russian Federation
| | - A Ryabikov
- Novosibirsk State Medical University, Novosibirsk, Russian Federation
| | - E Mazdorova
- Institute of Internal and Preventive Medicine, Novosibirsk, Russian Federation
| | - E Avdeeva
- Institute of Internal and Preventive Medicine, Novosibirsk, Russian Federation
| | - M Bobak
- University College London, London, United Kingdom
| | - J A Hubacek
- Institute for Clinical and Experimental Medicine (IKEM), Prague, Czech Republic
| | - I Munc
- Novosibirsk State Medical University, Novosibirsk, Russian Federation
| | - L Scherbakova
- Institute of Internal and Preventive Medicine, Novosibirsk, Russian Federation
| | - S Malyutina
- Institute of Internal and Preventive Medicine, Novosibirsk, Russian Federation
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20
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Dlouha D, Blaha M, Blaha V, Fatorova I, Hubacek JA, Stavek P, Lanska V, Parikova A, Pitha J. Analysis of circulating mirnas in patients with familial hypercholesterolaemia treated by LDL/Lp(a) apheresis. Atherosclerosis 2017. [DOI: 10.1016/j.atherosclerosis.2017.06.897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Dlouha D, Vymetalova J, Malek I, Hubacek JA. Comparison of relative telomere length measured in aortic tissue and leukocytes in patients after heart transplantation. Atherosclerosis 2017. [DOI: 10.1016/j.atherosclerosis.2017.06.900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Dlouha D, Vancura V, Vymetalova J, Hubacek JA, Lanska V, Malek I. Can leukocyte telomere length predict survival time in heart transplant recipients over a minimal follow-up of 20 years? Atherosclerosis 2017. [DOI: 10.1016/j.atherosclerosis.2017.06.899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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23
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Hubacek JA, Stanek V, Gebauerova M, Adamkova V, Pitha J. Risk factors in Czech males suffering on myocardial infarction – cholesterol retreat from the fame. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw175.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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24
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Hubacek JA, Adamkova V, Sedova L, Olisarova V, Tothova V. Adult type associated lactase persistence genotypes in Czech and Roma/Gypsy populations. Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw175.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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25
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Abstract
The role of the FTO gene in obesity development is well established in populations around the world. The NYD-SP18 variant has been suggested to have a similar effect on BMI, but the role of this gene in determining BMI has not yet been verified. The objective of our study was to confirm the association between NYD-SP18 rs6971019 SNP and BMI in the Slavic population and to analyze i) the gender-specific effects of NYD-SP18 on BMI and ii) the simultaneous effect of FTO rs17817449 and NYD-SP18 on BMI. We analyzed a sample of a large adult population based on the post-MONICA study (1,191 males and 1,368 females). Individuals were analyzed three times over 9 years. NYD-SP18 rs6971019 SNP is related to BMI in males (2000/1 GG 28.3+/-3.7 kg/m(2) vs. +A 27.5+/-3.7 kg/m(2) P<0.0005; in other examinations P<0.05 and <0.005), but not in females (all P values over 0.48 in all three examinations). Further analysis revealed the significant additive effect (but not the interaction) of FTO and NYD-SP18 SNPs on BMI in males (all P<0.01). These results suggest that association between NYD-SP18 rs6971019 SNP and BMI may be restricted to males. Furthermore, variants within NYD-SP18 and FTO genes revealed a significant additive effect on BMI values in males.
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Affiliation(s)
- J A Hubacek
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Abstract
The issue of plasma triglyceride levels relative to the risk of development of cardiovascular disease, as well as overall mortality, has been actively discussed for many years. Like other cardiovascular disease risk factors, final plasma TG values have environmental influences (primarily dietary habits, physical activity, and smoking), and a genetic predisposition. Rare mutations (mainly in the lipoprotein lipase and apolipoprotein C2) along with common polymorphisms (within apolipoprotein A5, glucokinase regulatory protein, apolipoprotein B, apolipo-protein E, cAMP responsive element binding protein 3-like 3, glycosylphosphatidylinositol-anchored HDL-binding protein 1) play an important role in determining plasma TG levels.
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Affiliation(s)
- L Schwarzova
- Third Department of Internal Medicine, First Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.
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Dlouha D, Maluskova J, Kralova Lesna I, Lanska V, Hubacek JA. Comparison of the relative telomere length measured in leukocytes and eleven different human tissues. Physiol Res 2016; 63:S343-50. [PMID: 25428739 DOI: 10.33549/physiolres.932856] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The relative length of telomeres measured in peripheral blood leukocytes is a commonly used system marker for biological aging and can also be used as a biomarker of cardiovascular aging. However, to what extent the telomere length in peripheral leukocytes reflects telomere length in different organ tissues is still unclear. Therefore, we have measured relative telomere length (rTL) in twelve different human tissues (peripheral blood leukocytes, liver, kidney, heart, spleen, brain, skin, triceps, tongue mucosa, intercostal skeletal muscle, subcutaneous fat, and abdominal fat) from twelve cadavers (age range of 29 week of gestation to 88 years old). The highest rTL variability was observed in peripheral leukocytes, and the lowest variability was found in brain. We found a significant linear correlation between leukocyte rTL and both intercostal muscle (R=0.68, P<0.02) and liver rTL (R=0.60, P<0.05) only. High rTL variability was observed between different organs from one individual. Furthermore, we have shown that even slight DNA degradation (modeled by sonication of genomic DNA) leads to false rTL shortening. We conclude that the rTL in peripheral leukocytes is not strongly correlated with the rTL in different organs.
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Affiliation(s)
- D Dlouha
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Vrablik M, Zlatohlavek L, Stulc T, Adamkova V, Prusikova M, Schwarzova L, Hubacek JA, Ceska R. Statin-associated myopathy: from genetic predisposition to clinical management. Physiol Res 2016; 63:S327-34. [PMID: 25428737 DOI: 10.33549/physiolres.932865] [Citation(s) in RCA: 36] [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: 01/14/2023] Open
Abstract
Statin-associated myopathy (SAM) represents a broad spectrum of disorders from insignificant myalgia to fatal rhabdomyolysis. Its frequency ranges from 1-5 % in clinical trials to 15-20 % in everyday clinical practice. To a large extent, these variations can be explained by the definition used. Thus, we propose a scoring system to classify statin-induced myopathy according to clinical and biochemical criteria as 1) possible, 2) probable or 3) definite. The etiology of this disorder remains poorly understood. Most probably, an underlying genetic cause is necessary for overt SAM to develop. Variants in a few gene groups that encode proteins involved in: i) statin metabolism and distribution (e.g. membrane transporters and enzymes; OATP1B1, ABCA1, MRP, CYP3A4), ii) coenzyme Q10 production (e.g. COQ10A and B), iii) energy metabolism of muscle tissue (e.g. PYGM, GAA, CPT2) and several others have been proposed as candidates which can predispose to SAM. Pharmacological properties of individual statin molecules (e.g. lipophilicity, excretion pathways) and patients´ characteristics influence the likelihood of SAM development. This review summarizes current data as well as our own results.
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Affiliation(s)
- M Vrablik
- Third Department of Internal Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic.
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Hubacek JA, Staněk V, Gebauerová M, Poledne R, Aschermann M, Skalická H, Matoušková J, Kruger A, Pěnička M, Hrabáková H, Veselka J, Hájek P, Lánská V, Adámková V, Pitˇha J. Rs6922269 marker at the MTHFD1L gene predict cardiovascular mortality in males after acute coronary syndrome. Mol Biol Rep 2015; 42:1289-93. [PMID: 25809277 DOI: 10.1007/s11033-015-3870-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Accepted: 11/13/2014] [Indexed: 11/29/2022]
Abstract
Myocardial infarction (MI) is the leading cause of death in industrialized countries. All the traditional risk factors for MI are responsible for approximately 50% of cases of MI cases. Attention therefore has recently focused on genetic variants that are not associated with conventional risk factors. One of them is the marker rs6922269, which has been suggested as a risk factor for development of MI in Western populations. We analyzed the relationship between rs6922269 variant on MTHFD1L gene and (i) risk of the acute coronary syndrome (ACS) in the Czech population and (ii) mortality in 7 years follow up. Rs6922269 (G>A) variant was analyzed (CR 99.3% for patients and 98.0% for controls) by PCR-RFLP in consecutively examined 1614 men and 503 women with ACS (age below 65 years) and in population-based controls--1191 men and 1368 women (aged up to 65 years). ANOVA and Chi square were used for statistical analysis. The genotype frequencies were almost identical (P=0.87) in the ACS patients and in controls and no differences were observed, if males (P=0.73) and females (P=0.93) were analysed separately. In addition, rs6922269 polymorphism was not associated with the classical risk factors (dyslipidemia, hypertension, obesity, smoking, diabetes) in control population. Cardiovascular mortality was significantly higher in males, carriers of the AA genotype (P<0.001, OR 2.52, 95% CI 1.40-4.55, for AA vs. +G). We conclude, that rs6922269 variant at MTHFD1L gene could be an important prognostic factor for cardiovascular mortality in patients after ACS.
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Affiliation(s)
- J A Hubacek
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic,
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Vaneckova M, Zakharov S, Klempir J, Ruzicka E, Bezdicek O, Brozova H, Diblik P, Miovsky M, Hubacek JA, Urban P, Ridzon P, Pelclova D, Burgetova A, Masek M, Kotikova K, Peterova K, Liskova I, Hamplova L, Seidl Z. Imaging findings after methanol intoxication (cohort of 46 patients). Neuro Endocrinol Lett 2015; 36:737-744. [PMID: 26921573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 11/18/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVES Our goal is to demonstrate the variability of imaging findings, primarily in the MRI, in 46 patients who survived acute methanol poisoning. This cohort of patients is the largest such sample group examined by MRI. METHODS Patients were examined by means of imaging methods (42 patients by MRI and 4 by CT). All had an identical protocol of MR examination (T2WI, FLAIR, T1WI with or without application of contrast medium and T2WI/FFE, DWI in the transversal plane of the scan, and with focus on the optic nerves in the coronal plane of the scan in T2WI-SPIR). RESULTS Imaging methods revealed a positive finding associated with methanol intoxication in 21 patients (46%). These consisted of symmetrical lesions in the putamen--13 patients (28%), haemorrhage--13 cases (28%), deposits in white matter with localization primarily subcortically--4 cases (9%), lesions in the region of the globus pallidus--7 cases (15%) (in 6 cases without combination with the lesions in the putamen), lesions in the brainstem afflicted 6 patients (13%), and lesion in the cerebellum was found in one case. A pathological finding was found only in the patients examined by MRI. CONCLUSION Almost half of the patients who survived acute methanol poisoning had pathological findings by MRI. The most common finding concerned an affliction of the putamen, which is a predilection area. An interesting finding was the relatively frequent occurrence of selective lesion of the globus pallidus, which is more usually associated with other types of intoxication.
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Affiliation(s)
- Manuela Vaneckova
- MR Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Sergey Zakharov
- Department of Occupational Medicine of the First Faculty of Medicine and General University Hospital, Charles University Prague, Czech Republic
| | - Jiri Klempir
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | - Evzen Ruzicka
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | - Ondrej Bezdicek
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | - Hana Brozova
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | - Pavel Diblik
- Department of Ophthalmology, Charles University in Prague, First Faculty of Medicine and General University Hospital, Czech Republic
| | - Michal Miovsky
- Department of Addictology, Charles University in Prague, First Faculty of Medicine and General University Hospital, Czech Republic
| | - Jaroslav Alois Hubacek
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Pavel Urban
- Department of Occupational Medicine of the First Faculty of Medicine and General University Hospital, Charles University Prague, Czech Republic
| | - Petr Ridzon
- Department of Occupational Medicine of the First Faculty of Medicine and General University Hospital, Charles University Prague, Czech Republic
| | - Daniela Pelclova
- Department of Occupational Medicine of the First Faculty of Medicine and General University Hospital, Charles University Prague, Czech Republic
| | - Andrea Burgetova
- MR Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Martin Masek
- MR Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Katerina Kotikova
- Department of Occupational Medicine of the First Faculty of Medicine and General University Hospital, Charles University Prague, Czech Republic
| | - Kamila Peterova
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | - Irena Liskova
- Department of Neurology and Center for Clinical Neurosciences, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Czech Republic
| | | | - Zdenek Seidl
- MR Unit, Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
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Hubacek JA, Peasey A, Kubinova R, Pikhart H, Bobak M. The association between APOA5 haplotypes and plasma lipids is not modified by energy or fat intake: the Czech HAPIEE study. Nutr Metab Cardiovasc Dis 2014; 24:243-247. [PMID: 24462044 PMCID: PMC4357849 DOI: 10.1016/j.numecd.2013.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 07/05/2013] [Accepted: 08/03/2013] [Indexed: 01/22/2023]
Abstract
BACKGROUND AND AIMS Several smaller studies reported interactions between dietary factors and apolipoprotein A5 (APOA5) gene polymorphisms in determination of plasma lipids. We tested interactions between APOA5 haplotypes and dietary intake in determination of plasma triglycerides (TG) and other lipids. METHODS AND RESULTS Participants (5487 males and females aged 45-69) were classified according to the number (0, 1, 2+) of minor APOA5 alleles (using T-1131 > C; rs662799 and Ser19 > Trp; rs3135506 polymorphisms) and into three groups of low (bottom 25%), medium (26th-75th percentile) and high (top 25%) of intake of total energy and total, saturated and polyunsaturated fats, assessed by food frequency questionnaire. The age-sex adjusted geometric means of plasma TG increased with the number of minor alleles, from 1.57 (standard error 0.01), to 1.79 (0.02) to 2.29 (0.10) mmol/L (p < 0.00001) but TG did not differ between groups with low, medium and high total energy intake (p = 0.251). TG concentrations were highest in subjects with the combination of 2+ minor alleles and the highest energy intake (mean 2.59 [0.19], compared with 1.62 [0.03] in subjects with lowest energy intake and no minor allele) but the interaction between energy intake and APOA5 haplotypes was not statistically significant (p = 0.186). Analogous analyses with total, saturated and polyunsaturated fat intake yielded similar nonsignificant results. Effects of APOA5 and dietary intakes on total and HDL cholesterol were weaker and no interactions were significant. CONCLUSION In this Slavic Caucasian population sample, we did not detect the hypothesized interaction between common SNPs within the APOA5 gene and diet in determination of blood lipids.
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Affiliation(s)
- J A Hubacek
- Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - A Peasey
- Department of Epidemiology and Public Health, University College London, London, 1-19 Torrington Place, London WC1E 6BT, UK
| | - R Kubinova
- National Institute of Public Health, Prague, Czech Republic
| | - H Pikhart
- Department of Epidemiology and Public Health, University College London, London, 1-19 Torrington Place, London WC1E 6BT, UK
| | - M Bobak
- Department of Epidemiology and Public Health, University College London, London, 1-19 Torrington Place, London WC1E 6BT, UK.
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Zlatohlavek L, Vrablik M, Ceska R, Adamkova V, Urbanova Z, Prusikova M, Vasickova L, Hubacek JA. APOA5 haplotypes determine triglyceride decrease after lifestyle induced weight loss in children. Nutr Metab Cardiovasc Dis 2012; 22:e22-e23. [PMID: 22796346 DOI: 10.1016/j.numecd.2012.05.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 05/12/2012] [Accepted: 05/15/2012] [Indexed: 11/23/2022]
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Dlouha D, Pitha J, Lanska V, Hubacek JA. Association between FTO 1st intron tagging variant and telomere length in middle aged females. 3PMFs study. Clin Chim Acta 2012; 413:1222-5. [PMID: 22503908 DOI: 10.1016/j.cca.2012.03.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 03/28/2012] [Accepted: 03/28/2012] [Indexed: 02/03/2023]
Abstract
The FTO gene plays an important role in the determination of body weight and BMI and it has been suspected of being associated with all-cause mortality, cardiovascular disease, cancer and end stage renal disease, but the causal mechanism of these effects is still unknown. One of the possibilities is the potential association with telomere length. Telomeres are repetitive DNA-sequences located at the ends of eukaryotic chromosomes' length of which is reduced in all somatic cells during ageing. Out of the 908 females (3PMFs study), in 783 females both FTO 1st intron tagging polymorphism (G>T, rs17817449) and the relative telomere length were successfully analysed. The relative telomere length was calculated as the ratio of telomere repeats to single-copy gene copies. The frequencies of the FTO genotypes were similar to other populations (GG=18.3%, GT=49.1% and TT=32.6%). We have detected, that the relative telomere length was significantly shorter (P<0.02, P<0.01 after adjustment for age, BMI, waist and subcutaneous fat), in carriers of at least one FTO risky (G) allele (0.85±0.39) in comparison to the carriers of the protective TT genotype (0.93±0.48). We have demonstrated that the FTO variant could be associated with the relative telomere length. Whether this represents a causality of association between the FTO variant and the non-communicable diseases needs to be further analysed.
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Affiliation(s)
- D Dlouha
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Hubacek JA, Staněk V, Gebauerová M, Pilipčincová A, Poledne R, Aschermann M, Skalická H, Matoušková J, Kruger A, Pěnička M, Hrabáková H, Veselka J, Hájek P, Lánská V, Adámková V, Pit’ha J. Lack of an association between connexin-37, stromelysin-1, plasminogen activator-inhibitor type 1 and lymphotoxin-alpha genes and acute coronary syndrome in Czech Caucasians. Exp Clin Cardiol 2010; 15:e52-e56. [PMID: 20959880 PMCID: PMC2954029] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Accepted: 05/10/2010] [Indexed: 05/30/2023]
Abstract
BACKGROUND The majority of acute coronary syndrome (ACS) cases cannot be explained by the analysis of commonly recognized risk factors; thus, the analysis of possible genetic predispositions is of interest. The genes for connexin-37, stromelysin-1, plasminogen activator-inhibitor type 1 (PAI-1) and lymphotoxin-alpha are among many presently known candidate genes that are associated with risk factors for ACS. OBJECTIVE To identify the potential impact of the functional variants of connexin-37, stromelysin-1, PAI-1 and lymphotoxin-alpha on ACS in a Caucasian Czech population. METHODS A total of 1399 consecutive patients (1016 men and 383 women) with ACS from five coronary care units located in Prague (Czech Republic) were analyzed; a representative sample of 2559 healthy individuals (1191 men and 1368 women) were also genotyped and served as controls. RESULTS The gene variants analyzed were not significantly associated with the prevalence of ACS or the classical risk factors of ACS development such as high plasma lipid levels, hypertension, diabetes, high body mass index or smoking. CONCLUSION In a Caucasian Czech population sample, genetic variants of connexin-37, stromelysin-1, PAI-1 and lymphotoxin-alpha were not significantly associated with a predisposition toward ACS.
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Affiliation(s)
- Jaroslav Alois Hubacek
- Institute for Clinical and Experimental Medicine
- Centre for Cardiovascular Research, Prague
- Faculty for Public Health and Social Studies, South Bohemia University, Ceske Budejovice
- 2nd Department of Internal Medicine, General Teaching Hospital
| | | | | | | | - Rudolf Poledne
- Institute for Clinical and Experimental Medicine
- Cardiocenter, Department of Cardiology, University Hospital Královské Vinohrady
| | | | - Hana Skalická
- 2nd Department of Internal Medicine, General Teaching Hospital
| | - Jana Matoušková
- Department of Cardiology, Homolka Hospital, Prague, Czech Republic
| | - Andreas Kruger
- Department of Cardiology, Homolka Hospital, Prague, Czech Republic
| | - Martin Pěnička
- Department of Cardiology, Homolka Hospital, Prague, Czech Republic
| | - Hana Hrabáková
- 2nd Department of Internal Medicine, General Teaching Hospital
| | - Josef Veselka
- Cardiocenter, Department of Cardiology, University Hospital Královské Vinohrady
| | - Petr Hájek
- Cardiocenter, Department of Cardiology, University Hospital Královské Vinohrady
| | - Vera Lánská
- Institute for Clinical and Experimental Medicine
| | | | - Jan Pit’ha
- Institute for Clinical and Experimental Medicine
- Centre for Cardiovascular Research, Prague
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Hubacek JA, Adamkova V, Skodova Z, Lanska V, Poledne R. No relation between angiotensin‐converting enzyme gene polymorphism and smoking dependence. Scandinavian Journal of Clinical and Laboratory Investigation 2009; 64:575-8. [PMID: 15370463 DOI: 10.1080/00365510410002760] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND Smoking as a major risk factor for development of cancer and cardiovascular disease is thought to be partially genetically determined. The aim of this study was to investigate whether there is an association between insertion/deletion (I/D) polymorphism in angiotensin-converting enzyme (ACE) and smoking status and the number of cigarettes smoked per week. METHODS Using polymerase chain reaction, I/D polymorphism was evaluated in the ACE gene in 1204 male and 1375 female representative Caucasians. Information about smoking status and number of cigarettes smoked per week was collected via a questionnaire. RESULTS Frequencies of the alleles and genotypes of ACE I/D polymorphism did not differ between smokers, past smokers and individuals who had never smoked. No association was found between ACE I/D polymorphism and the number of cigarettes smoked per week, either in males or in females. CONCLUSION I/D polymorphism in the ACE gene does not play any role in genetic determination of predisposition to smoking.
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Affiliation(s)
- J A Hubacek
- Institute for Clinical and Experimental Medicine, Centre for Experimental Medicine and Department of Preventive Cardiology, Prague, Czech Republic.
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Vymetalova Y, Bohuslavova R, Hubacek JA, Dufkova B, Kocik M, Malek I, Kautzner J. High prevalence of microchimerism in female patients. Transplant Proc 2009; 40:3685-7. [PMID: 19100466 DOI: 10.1016/j.transproceed.2008.06.103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2007] [Revised: 03/14/2008] [Accepted: 06/18/2008] [Indexed: 11/17/2022]
Abstract
Evaluation of free plasma DNA has been suggested as one of the option to detect organ rejection in transplanted patients. However, the presence of chimeric cells in organs could make this approach complicated. To study the presence of Y-chromosome chimeric cells, we examined biopsy samples of 40 thoracic aortas of female donors and recipients. Using nested polymerase chain reaction, the presence of Y-chromosome-specific DNA sequences was detected in 19 (47.5%) analyzed tissue samples. Thus, free DNA originating from more than two genomes could be present in plasma in such a high proportion of cases. This phenomenon makes the use of plasma free DNA for the detection of organ rejection difficult and impractical.
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Affiliation(s)
- Y Vymetalova
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Suchanek P, Lorenzova A, Poledne R, Hubacek JA. Changes of plasma lipids during weight reduction in females depends on APOA5 variants. Ann Nutr Metab 2008; 53:104-8. [PMID: 18946207 DOI: 10.1159/000165358] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2007] [Accepted: 08/29/2008] [Indexed: 11/19/2022]
Abstract
BACKGROUND Apolipoprotein A5 (APOA5) is a determinant of plasma lipids, and its role in body mass index (BMI) determination is discussed. This study was aimed at the investigation of the relationship between common APOA5 gene variants and body weight/plasma lipid decrease in overweight females. METHODS We analyzed 98 unrelated overweight and obese nondiabetic Czech females (BMI >27.5). APOA5 T-1131-->C and Ser19-->Trp variants were genotyped. Before and after 9 weeks of lifestyle modification, biochemical and anthropometrical measurements and assessment of nutritional intake were performed. The lifestyle modification program consisted of a reduction in energy intake and an exercise program (aerobic exercise 4 times per week, 60 min each). RESULTS The mean age of the participants was 30.7 +/- 3.7 years, the mean BMI before the intervention was 31.4 +/- 3.8 and the weight loss was 5.9 +/- 2.5 kg (7 +/- 3%). There were 86 T-1131T homozygotes and 12 carriers of the C-1131 allele and 82 Ser19Ser homozygotes and 16 carriers of the Trp19 allele, respectively; 72 females had the commonest T-1131T/Ser19Ser haplotype. No significant association between BMI decrease and APOA5 variants was found, but T-1131T carriers have a significantly higher body weight both before and after the intervention (p < 0.05; p = not significant for BMI). The fasting glycemia was significantly higher in Trp19 carriers both before and after the intervention (p < 0.01). Further, plasma triglyceride levels decreased in Ser19Ser homozygotes but increased in Trp19 carriers (1.42 +/- 0.62 to 1.28 +/- 0.48 vs. 1.15 +/- 0.47 to 1.41 +/- 0.80 mmol/l; p < 0.05 for differences between the groups). Similarly, in carriers of at least 1 less common APOA5 allele (n = 26), plasma low-density lipoprotein cholesterol levels did not decrease as they did in T-1131T/Ser19Ser carriers (3.11 +/- 0.70 to 3.27 +/- 0.81 vs. 3.39 +/- 0.81 to 3.16 +/- 0.86 mmol/l; p < 0.05 for differences between the groups). CONCLUSIONS APOA5 gene variants have effects on the decrease in plasma triglyceride and low-density lipoprotein cholesterol level in females in a model combining their dietary habits and physical activity changes.
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Affiliation(s)
- P Suchanek
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Dorfmeister B, Zeng WW, Dichlberger A, Nilsson SK, Schaap FG, Hubacek JA, Merkel M, Cooper JA, Lookene A, Putt W, Whittall R, Lee PJ, Lins L, Delsaux N, Nierman M, Kuivenhoven JA, Kastelein JJP, Vrablik M, Olivecrona G, Schneider WJ, Heeren J, Humphries SE, Talmud PJ. Effects of six APOA5 variants, identified in patients with severe hypertriglyceridemia, on in vitro lipoprotein lipase activity and receptor binding. Arterioscler Thromb Vasc Biol 2008; 28:1866-71. [PMID: 18635818 DOI: 10.1161/atvbaha.108.172866] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE The purpose of this study was to identify rare APOA5 variants in 130 severe hypertriglyceridemic patients by sequencing, and to test their functionality, since no patient recall was possible. METHODS AND RESULTS We studied the impact in vitro on LPL activity and receptor binding of 3 novel heterozygous variants, apoAV-E255G, -G271C, and -H321L, together with the previously reported -G185C, -Q139X, -Q148X, and a novel construct -Delta139 to 147. Using VLDL as a TG-source, compared to wild type, apoAV-G255, -L321 and -C185 showed reduced LPL activation (-25% [P=0.005], -36% [P<0.0001], and -23% [P=0.02]), respectively). ApoAV-C271, -X139, -X148, and Delta139 to 147 had little affect on LPL activity, but apoAV-X139, -X148, and -C271 showed no binding to LDL-family receptors, LR8 or LRP1. Although the G271C proband carried no LPL and APOC2 mutations, the H321L carrier was heterozygous for LPL P207L. The E255G carrier was homozygous for LPL W86G, yet only experienced severe hypertriglyceridemia when pregnant. CONCLUSIONS The in vitro determined function of these apoAV variants only partly explains the high TG levels seen in carriers. Their occurrence in the homozygous state, coinheritance of LPL variants or common APOA5 TG-raising variant in trans, appears to be essential for their phenotypic expression.
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Affiliation(s)
- B Dorfmeister
- Department of Medicine, Division of Cardiovascular Genetics, UCL, London, UK
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Hribova P, Reinke P, Petrasek J, Brabcova I, Hubacek JA, Viklicky O. Heme oxygenase-1 polymorphisms and renal transplantation outcomes: balancing at the detection limit of allelic association studies. Am J Transplant 2008; 8:1077-8; author reply 1079. [PMID: 18416743 DOI: 10.1111/j.1600-6143.2008.02207.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Hubacek JA, Vymetalova Y, Bohuslavova R, Kocik M, Malek I. Detection of Donor DNA After Heart Transplantation: How Far Could It Be Affected by Blood Transfusion and Donor Chimerism? Transplant Proc 2007; 39:1593-5. [PMID: 17580196 DOI: 10.1016/j.transproceed.2007.01.093] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2006] [Accepted: 01/16/2007] [Indexed: 11/28/2022]
Abstract
The possibility to detect donor DNA in recipient plasma has been discussed as a method to prove organ rejection without a biopsy. Usually, the presence of Y chromosome-specific DNA sequences in female recipients has been used as an example. We have analyzed the presence of part of Y chromosomes in females after heart transplantation. The results suggested that pretransplantation blood transfusion together with cell chimerism of donor organs could be factors that affect detection of donor DNA in recipient plasma. Among females who have undergone transplantation, if the donor organ is chimeric, nested polymerase chain reaction may permit detection of Y chromosome-specific DNA sequences to estimate rejection. In other cases, extremely well-controlled methods using multiple markers need to be developed to avoid the danger of false-positive or false-negative results.
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Affiliation(s)
- J A Hubacek
- IKEM-CEM-LMG, Videnska 1958/9, Prague 4, Bohemia 140 21, Czech Republic.
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Hubacek JA, Skodova Z, Adamkova V, Lanska V, Vlasakova Z. No association between CD14 (C-260-->T) variant and plasma triglycerides or body mass index in non-diabetic Caucasians. Diabet Med 2007; 24:99-100; author reply 100-1. [PMID: 17227333 DOI: 10.1111/j.1464-5491.2007.2017_1.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Hubacek JA, Skodová Z, Adámková V, Lánská V, Pitha J. APOA5 variant Ser19Trp influences a decrease of the total cholesterol in a male 8 year cohort. Clin Biochem 2005; 39:133-6. [PMID: 16386723 DOI: 10.1016/j.clinbiochem.2005.11.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2005] [Revised: 09/14/2005] [Accepted: 11/24/2005] [Indexed: 11/16/2022]
Abstract
OBJECTIVES To evaluate whether the relationship between dietary composition and plasma lipid levels is genetically determined. DESIGN AND METHODS We have evaluated the influence of common apolipoprotein A5 (APOA5) variants (T-1131 > C, Ser19 > Trp and Val153 > Met) on plasma lipid concentrations in 117 males for whom dietary composition markedly changed and total cholesterol decreased (from 6.21 +/- 1.31 mmol/L in 1988 to 5.43 +/- 1.06 mmol/L in 1996) over an 8 year follow-up study. RESULTS APOA5 T-1131 > C and Val153 > Met variants did not influence the change in lipid measures over time. In Ser/Ser19 homozygotes, the plasma cholesterol was relatively stable over the years (6.1 +/- 1.2 mmol/L in 1988 and 5.6 +/- 1.0 mmol/L in 1996, -8%, P < 0.01). In contrast, in the Trp19 carriers, the decrease of the plasma cholesterol was more than 20% (6.5 +/- 1.6 mmol/L in 1988 and 5.1 +/- 1.0 mmol/L in 1996) (P < 0.001). The difference of the changes is significant (8% vs. 20%, P < 0.005). Changes in other analyzed lipid parameters have not been significantly associated with APOA5 variants. CONCLUSIONS Ser19 > Trp variant in the APOA5 gene may play an important role in an individual's sensitivity to dietary composition.
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Affiliation(s)
- J A Hubacek
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Hubacek JA, Skodová Z, Adámková V, Lánská V, Poledne R. The influence of APOAV polymorphisms (T-1131>C and S19>W) on plasma triglyceride levels and risk of myocardial infarction. Clin Genet 2004; 65:126-30. [PMID: 14984471 DOI: 10.1111/j.0009-9163.2004.00199.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The importance of an APOAV gene for plasma triglyceride level determination has been shown on transgenic and knockout mice. We examined whether APOAV variants are associated with plasma triglyceride levels and risk of myocardial infarction (MI). We have evaluated the influence of APOAV polymorphisms (T-1131>C and S19>W) on plasma triglycerides in 1191 males and 1368 females representatively selected from the Czech population. Triglycerides have been analysed in 1997 and 2001. Subsequently, we have analysed the genotype frequencies of the APOAV polymorphism in 435 patients with MI. T-1131>C variation in the APOAV gene affects the plasma triglyceride showing a higher level in C-1131 carriers than in T/T-1131 homozygotes. This association has been observed both in males and females (p < 0.001). Similarly, plasma triglycerides were also significantly influenced by the S19>W APOAV genotypes. In both males and females, the W19 carriers have triglycerides significantly (p < 0.001) higher compared to the S19 homozygotes. In a group of MI patients, the frequency of the rare homozygotes for at least one APOAV polymorphism (C/C-1131 and/or W/W19) was significantly higher than that in the population sample (7.4 vs 2.0%, p < 0.00001). We conclude that variations in the APOAV gene not only play a role in genetic determination of triglyceride levels but also could influence risk of MI.
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Affiliation(s)
- J A Hubacek
- Center for Experimental Medicine, Prague, Czech Republic.
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Vrablík M, Horínek A, Ceska R, Adámková V, Poledne R, Hubacek JA. Ser19-->Trp polymorphism within the apolipoprotein AV gene in hypertriglyceridaemic people. J Med Genet 2003; 40:e105. [PMID: 12920097 PMCID: PMC1735562 DOI: 10.1136/jmg.40.8.e105] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- M Vrablík
- 3rd Internal Department, 1st Medical Faculty, Charles University, Prague, Czech Republic
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Horínek A, Vráblík M, Ceska R, Adámková V, Poledne R, Hubacek JA. T-1131-->C polymorphism within the apolipoprotein AV gene in hypertriglyceridemic individuals. Atherosclerosis 2003; 167:369-70. [PMID: 12818421 DOI: 10.1016/s0021-9150(03)00022-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hubacek JA, Pitha J, Skodová Z, Poledne R. Rare variant of apolipoprotein E (Arg136-->Cys) in a subject with normal lipid values. Physiol Res 2002; 51:107-8. [PMID: 12071285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
During the screening of apolipoprotein (apo) E gene polymorphism with PCR and subsequent restriction analysis, we have identified a female carrier with a mutant allele Arg136-->Cys. This proband had normal lipid parameters and no history of coronary artery disease (CAD). We did not confirm the previously described connection between apo E Arg136-->Cys mutation and elevated lipid levels. In the case of this mutation, other factors (environmental and/or genetic) are important for the development of lipid metabolism disorders.
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Affiliation(s)
- J A Hubacek
- Institute for Clinical and Experimental Medicine, Laboratory of Atherosclerosis Research, Centre for Experimental Cardiovascular Research, Prague, Czech Republic.
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Pennacchio LA, Olivier M, Hubacek JA, Cohen JC, Cox DR, Fruchart JC, Krauss RM, Rubin EM. An apolipoprotein influencing triglycerides in humans and mice revealed by comparative sequencing. Science 2001; 294:169-73. [PMID: 11588264 DOI: 10.1126/science.1064852] [Citation(s) in RCA: 662] [Impact Index Per Article: 28.8] [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] [Indexed: 11/02/2022]
Abstract
Comparison of genomic DNA sequences from human and mouse revealed a new apolipoprotein (APO) gene (APOAV) located proximal to the well-characterized APOAI/CIII/AIV gene cluster on human 11q23. Mice expressing a human APOAV transgene showed a decrease in plasma triglyceride concentrations to one-third of those in control mice; conversely, knockout mice lacking Apoav had four times as much plasma triglycerides as controls. In humans, single nucleotide polymorphisms (SNPs) across the APOAV locus were found to be significantly associated with plasma triglyceride levels in two independent studies. These findings indicate that APOAV is an important determinant of plasma triglyceride levels, a major risk factor for coronary artery disease.
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Affiliation(s)
- L A Pennacchio
- Genome Sciences Department, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
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Abstract
Sitosterolemia is an autosomal recessive disorder caused by mutations in two adjacent genes encoding coordinately regulated ATP binding cassette (ABC) half transporters (ABCG5 and ABCG8). In this paper we describe three novel mutations causing sitosterolemia: 1) a frameshift mutation (c.336-337insA) in ABCG5 that results in premature termination of the protein at amino acid 197; 2) a missense mutation that changes a conserved residue c.1311C>G; N437K) in ABCG5 and 3) a splice site mutation in ABCG8 (IVS1-2A>G). This study expands the spectrum of the ABCG5 and ABCG8 mutations that cause sitosterolemia. Nine nonsynonymous polymorphisms are also reported: I523V, C600Y, Q604E, and M622V in ABCG5; and D19H, Y54C, T400K, A632V, and Y641F in ABCG8.
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Affiliation(s)
- J A Hubacek
- Departments of Molecular Genetics and Internal Medicine and McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center at Dallas, Dallas, TX, USA
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Hubacek JA, Pitha J, Skodová Z, Adámková V, Lánská V, Poledne R. A possible role of apolipoprotein E polymorphism in predisposition to higher education. Neuropsychobiology 2001; 43:200-3. [PMID: 11287800 DOI: 10.1159/000054890] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A potential candidate gene that could contribute to the education process is the apolipoprotein E (apo E) gene that has been shown to correlate with memory function and memory decline. We measured apo E polymorphism in groups of probands with different levels of education selected from a population sample. In the group of probands with higher education (n = 82), 24.4% had the e4 allele, compared with 7.3% who had the e2 allele. A reverse association was found in the group that left school aged 15 (n = 36) - 8.3% had the e4 allele and 13.9% had the e2 allele. Eighty-seven percent of the probands with the allele e4 reached higher education, compared to only 54.5% with the allele e2. The difference between the groups is statistically significant (p = 0.039), and this may indicate some role for the apo E polymorphism in subjects' intelligence or ability to learn.
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Affiliation(s)
- J A Hubacek
- Laboratory of Atherosclerosis Research, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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