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Zhubi Bakija F, Bagyura Z, Fabian A, Ferencz A, Lakatos B, Ujvari A, Kiss L, Csobay-Novak C, Jermendy A, Szelid Z, Soos P, Kovacs A, Merkely B. Long-term prognostic value of left atrial longitudinal strain in a low-risk community-based cohort. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.055] [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: 11/14/2022] Open
Abstract
Abstract
Numerous studies established the significant predictive value of left ventricular (LV) global longitudinal strain (GLS) on adverse clinical outcomes in various cardiac diseases. Despite the well-known importance of left atrial (LA) mechanics in diastolic function, data are scarce regarding the prognostic power of LA longitudinal strain and its potential added value in the risk stratification of a low-risk population.
Accordingly, our aim was to determine the long-term prognostic importance of 2D speckle-tracking echocardiography-derived peak atrial longitudinal strain (PALS) in a community-based screening sample comprising of low-risk adult individuals.
Three hundred fourteen volunteers were retrospectively identified from a population-based screening program (mean age 62±11, 58% female) with a median follow-up of 9.5 years. All subjects who participated in the screening program underwent 2D echocardiography to measure LV volumes and ejection fraction (EF), LV GLS and PALS, as well as low-dose cardiac CT to determine the Agatston score. The primary endpoint was all-cause mortality.
Thirty-nine subjects (12.4%) met the primary endpoint. Subjects with adverse outcome had significantly decreased LV GLS (dead vs. alive; −19.2±4.3 vs. −20.6±3.5%, p<0.05) and PALS (32.3±12.0 vs. 41.8±14.2%, p<0.001), whereas LV EF did not show a difference between the two groups (51.1±7.0 vs. 52.1±6.2, %, p=NS). By multivariable Cox regression analysis, PALS (hazard ratio 0.970 [95% CI: 0.943–0.998], p<0.05) and Agatston score were independently associated with all-cause mortality, whereas GLS was not (hazard ratio 1.008 [95% CI, 0.919–1.105], p=NS). Furthermore, we dichotomised the population based on PALS values using a guideline-directed cut-off of 39%. In subjects with lower PALS values, the risk of all-cause mortality was almost 2.5 times higher than in subjects with PALS values above 39% (hazard ratio 2.499 [95% 1.334–4.682], p<0.05) as shown on the Kaplan-Meier curve (Figure 1).
Beyond the assessment of LV EF and LV GLS, PALS offers incremental value in cardiovascular risk stratification in a community-based cohort. PALS was found to be the only significant and independent predictor of long-term mortality among other echocardiographic functional parameters. Our results emphasize the importance of a thorough evaluation of LA mechanics even in a low-risk population.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- F Zhubi Bakija
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - Z Bagyura
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - A Fabian
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - A Ferencz
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - B Lakatos
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - A Ujvari
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - L Kiss
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - C Csobay-Novak
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - A Jermendy
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - Z Szelid
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - P Soos
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - A Kovacs
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
| | - B Merkely
- Semmelweis University Heart and Vascular Center , Budapest , Hungary
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Kiss O, Babity M, Konig A, Zamodics M, Gregor ZS, Horvath M, Kiss A, Rakoczi R, Juhasz V, Dohy ZS, Szabo L, Lakatos B, Kovacs A, Vago H, Merkely B. Cardiopulmonary examinations of athletes returning to high-intensity sport activity following SARS-CoV-2 infection. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2549] [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
During the pandemic, several studies were carried out on the short-term effects of acute SARS-CoV-2 infection in athletes. As some cases of young athletes with serious complications like myocarditis or thromboembolism and even sudden death were reported, strict recommendations for return to sport were published. However, we have less data about athletes who have already returned to high-intensity trainings after a SARS-CoV-2 infection.
Athletes underwent cardiology screening (personal history, physical examination, 12-lead resting ECG, laboratory tests with necroenzyme levels and echocardiography) 2 to 3 weeks after suffering a SARS-CoV-2 infection. In case of negative results, they were advised to start low intensity trainings and increase training intensity regularly until achieving maximal intensity a minimum of 3 weeks later. A second step of cardiology screening was also carried out after returning to maximal intensity trainings. The above mentioned screening protocol was repeated and was completed with vita maxima cardiopulmonary exercise testing (CPET) on running treadmill. If the previous examinations indicated, 24h Holter ECG recording, 24h ambulatory blood pressure monitoring or cardiac MR imaging were also carried out. Data are presented as mean±SD.
Two-step screening after SARS-CoV-2 infection was carried out in 111 athletes (male:74, age:22.4±7.4y, elite athlete:90%, training hours:14.8±5.8 h/w, ice hockey players:31.5%, water polo players:22.5%, wrestlers:18.9%, basketball players:18.0%). Second screenings were carried out 94.5±31.5 days after the first symptoms of the infection. A 5% of the athletes was still complaining of tiredness and decreased exercise capacity. Resting heart rate was 70.3±13.0 b.p.m., During CPET examinations, athletes achieved a maximal heart rate of 187.3±11.6 b.p.m., maximal relative aerobic capacity of 49.2±5.5 ml/kg/min, and maximal ventilation of 138.6±31.2 l/min. The athletes reached their anaerobic threshold at 87.8±6.3% of their maximal aerobic capacity, with a heart rate of 93.3±3.7% of their maximal values. Heart rate recovery was 29.9±9.2/min. During the CPET examinations, short supraventricular runs, repetititve ventricular premature beats + ventricular quadrigeminy and inferior ST depression were found in 1–1 cases. Slightly higher pulmonary pressure was measured on the echocardiography in 4 cases. Hypertension requiring drug treatment was found in 5.4% of the cases. Laboratory examinations revealed decreased vitamin D3 levels in 26 cases, decreased iron storage levels in 18 athletes. No SARS-CoV-2 infection related CMR changes were revealed in our athlete population.
Three months after SARS-CoV-2 infection, most of the athletes examined had satisfactory fitness levels. However, some cases of decreased exercise capacity, decreased vitamin D3 or iron storage levels, arrhythmias, hypertension and elevated pulmonary pressure requiring further examinations, treatment or follow-up were revealed.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): This project was supported by a grant from the National Research, Development and Innovation Office (NKFIH) of Hungary; The research was financed by the Thematic Excellence Programme of the Ministry for Innovation and Technology in Hungary, within the framework of the Therapeutic Development and Bioimaging programmes of the Semmelweis University
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Affiliation(s)
- O Kiss
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - M Babity
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - A Konig
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - M Zamodics
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - Z S Gregor
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - M Horvath
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - A Kiss
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - R Rakoczi
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - V Juhasz
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - Z S Dohy
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - L Szabo
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - B Lakatos
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - A Kovacs
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - H Vago
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - B Merkely
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
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Babity M, Kiss O, Zamodics M, Vargane Budai E, Horvath M, Kiss A, Gregor ZS, Rakoczi R, Menyhart-Hetenyi A, Szabo L, Dohy ZS, Lakatos B, Kovacs A, Vago H, Merkely B. Changes of resting cardiac marker levels due to sport adaptation. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2521] [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: 11/14/2022] Open
Abstract
Abstract
Background
In acute and chronic heart diseases some cardiac necroenzymes and peptide fragments are essential during the diagnosis and following the progression of the diseases. Previous literature data are available about elevation of these cardiac markers after exhausting physical activity, but we do not have information about the resting levels in athletes.
Methods
In part of the extended cardiology screening of athletes in our institute, we analyzed the levels of hsTroponinT, CKMB, LDH and NT-proBNP from blood samples. All the samples were collected at least 12 hours after the last trainings or competitions. The results of the athletes were compared with a healthy sedentary non-athlete control group. After the blood collection all subject underwent echocardiography examinations and cardiopulmonary exercise testing. Depending on normality, groups were compared with two-tailed Student's t-test or Mann-Whitney U-test. Statistical analysis was processed in RStudio development environment.
Results
Results of 335 athletes from different sports (male: 162, age: 18.9±5.9 years, training: 15.8±5.9 hours/week) and 53 sedentary non-athletes (male: 23, age: 19.8±3.2 years, training: 2.7±2.3 hours/week) were compared. In athletes, increased level of hsTroponinT was found in 3.3% (n=11), of CKMB in 5.7% (n=18), of LDH in 2.7% (n=9) and of NT-proBNP in 1.2% (n=4). In the control group no elevation was found regarding the CKMB and hsTroponinT, while slightly elevated values of LDH and NT-proBNP were revealed in 1–1 cases. In athletes we measured higher CKMB (17.5±6.8 vs 12.3±3.4 U/l, p<0.001) and LDH values (323.7±63.3 vs 286.0±51.1 U/l, p<0.001), and lower values of NT-proBNP (27.2±29.2 vs 49 8±38.7 pg/ml, p<0.001) compared to the control group, while in the hsTroponinT levels (4.3±1.4 vs 5.6±6.3 ng/l, p=0.33) no significant changes were measured. In term of the examined laboratory parameters significant correlation was found with maximal relative aerob capacity (CKMB: r=0.23, p<0.001; LDH: r=0.18, p<0.001; hsTroponinT: r=0.23, p<0.001; NT-proBNP: r=−0.22, p<0.001), but no correlation was found with age. Significant correlation was found between NT-proBNP levels and echocardiographic measurements of ventricular diameters and left ventricular wall thickness (LVEDD r=−0.15, p<0.03; LVESD r=−0.18, p<0.03; RVD: r=−0.15, p<0.02; IVS: r=−0.22, p<0.001; PWD r=−0.27, p<0.001), CKMB levels correlated with left ventricular wall thickness (IVS: r=0.11, p<0.05; PWD r=0.14, p<0.02).
Conclusions
Based on our results, in connection with the sports adaptation of the heart, the resting levels of the cardiac markers also show significant changes, these changes are correlated with aerobic endurance and structural sport adaptation parameters as well. Our study draws attention to the importance of different assessment of cardiac markers in athletes.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): This project was supported by a grant from the National Research, Development and Innovation Office (NKFIH) of Hungary (K 135076).Supported by the ÚNKP-20-3-I-SE-41 New National Excellence Program of the Ministry for Innovation and Technology from the Source of the National Research, Development and Innovation fund.
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Affiliation(s)
- M Babity
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - O Kiss
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - M Zamodics
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - E Vargane Budai
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - M Horvath
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - A Kiss
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - Z S Gregor
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - R Rakoczi
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | | | - L Szabo
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - Z S Dohy
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - B Lakatos
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - A Kovacs
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - H Vago
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - B Merkely
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
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Kiss O, Frivaldszky L, Tokodi M, Babity M, Bognar C, Skopal J, Kovacs A, Vago H, Lakatos B, Zamodics M, Rakoczi R, Czimbalmos C, Dohy Z, Menyhart-Hetenyi A, Merkely B. Resting levels of cardiac markers in athletes. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2939] [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: 11/14/2022] Open
Abstract
Abstract
Introduction
Examination of specific cardiac enzymes and peptide fragments is essential in cases of acute myocardial ischemia and heart failure. According to previous data, exhausting physical effort may cause temporary increase of cardiac necroenzyme levels, while no information is available on their resting values in athletes.
Methods
Resting serum levels of hsTroponinT, CKMB, LDH and NT-proBNP were measured as part of extended sports cardiology screening in healthy athletes and a healthy sedentary non-athlete control group. Depending on normality, groups were compared with two-tailed Student's t-test or Mann-Whitney U-test. Statistical analysis was processed in RStudio integrated development environment.
Results
Results of 237 healthy athletes from different sports (male: 144, age: 19.1±5.9 years, training: 16.0±6.7 hours/week) and 53 sedentary non-athletes (male: 23, age: 19.8±3.2 years, training: 2.6±2.3 hours/week) were analysed. In athletes, increased resting cardiac marker levels were measured as follows: CKMB: 6.3% (n=15), LDH: 3.4% (n=8), hsTroponinT: 4.2% (n=10), NT-proBNP: 0.8% (n=2) of the cases. No elevation of CKMB and hsTroponin T levels were measured in the control group, while only single cases of increased LDH and NT-proBNP were detected. We measured higher levels of CKMB (17.6±7.3 vs. 12.3±3.4 U/l, p<0.001), LDH (322.4±60.8 vs. 286.0±51.1 U/l, p<0.001) and hsTroponinT (6.2±4.7 vs. 4.3±1.4 ng/l, p<0.05), while lower levels of NT-proBNP (23.9±27.2 vs. 49.8±38.7 pg/ml, p<0.001) in athletes compared to the control group. In male athletes, higher levels of CKMB (18.5±6.6 vs. 16.0±8.2 U/l, p<0.001), LDH (337.0±62.2 vs. 300.7±51.9 U/l, p<0.001) and hsTroponinT (7.0±5.3 vs. 4.3±1.9 ng/l, p<0.001), and lower levels of NT-proBNP (19.8±23.1 vs. 35.0±34.1 pg/ml, p<0.001) were measured compared to female athletes. Levels of hsTroponinT decreased in athletes due to increasing age (r=−0.20, p<0.05).
Discussion
According to our results, resting levels of cardiac markers show significant alterations due to sport adaptation of the heart. These changes depend on age and sex as well.
Conclusions
Our research attract attention to different assessment of cardiac markers in athletes in respect of recognition of cardiovascular pathologies.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): This project was supported by a grant from the National Research, Development and Innovation Office (NKFIH) of Hungary.
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Affiliation(s)
- O Kiss
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - L Frivaldszky
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - M Tokodi
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - M Babity
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - C.S Bognar
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - J Skopal
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - A Kovacs
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - H Vago
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - B Lakatos
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - M Zamodics
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - R Rakoczi
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - C.S Czimbalmos
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | - Z.S Dohy
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
| | | | - B Merkely
- Semmelweis University, Heart and Vascular Center, Budapest, Hungary
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Balayan T, Begovac J, Skrzat-Klapaczyńska A, Aho I, Alexiev I, Bukovinova P, Salemovic D, Gokengin D, Harxhi A, Holban T, Jevtovic D, Kase K, Lakatos B, Latysheva I, Matulionyte R, Oprea C, Papadopoulos A, Rukhadze N, Sedlacek D, Tomazic J, Vassilenko A, Vasylyev M, Verhaz A, Yancheva N, Yurin O, Horban A, Kowalska JD. Where are we with pre-exposure prophylaxis use in Central and Eastern Europe? Data from the Euroguidelines in Central and Eastern Europe (ECEE) Network Group. HIV Med 2020; 22:67-72. [PMID: 33021049 DOI: 10.1111/hiv.12960] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 04/14/2020] [Revised: 07/03/2020] [Accepted: 08/19/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Pre-exposure prophylaxis (PrEP) for HIV infection is an important intervention for control of the HIV epidemic. The incidence of HIV infection is increasing in the countries of Central and Eastern Europe (CEE). Therefore, we investigated the change in PrEP use in CEE over time. METHODS The Euroguidelines in Central and Eastern Europe (ECEE) Network Group was initiated in February 2016 to compare standards of care for HIV and viral hepatitis infections in CEE. Data on access to PrEP were collected from 23 countries through online surveys in May-June 2017 (76 respondents) and in November 2018-May 2019 (28 respondents). RESULTS About 34.2% of respondents stated that tenofovir/emtricitabine (TDF/FTC) was licensed for use in their country in 2017, and 66.7% that it was licensed for use in 2018 (P = 0.02). PrEP was recommended in national guidelines in 39.5% of responses in 2017 and 40.7% in 2018 (P = 0.378). About 70.7% of respondents were aware of "informal" PrEP use in 2017, while 66.6% were aware of this in 2018 (P = 0.698). In 2018, there were 53 centres offering PreP (the highest numbers in Poland and Romania), whereas six countries had no centres offering PreP. The estimated number of HIV-negative people on PreP in the region was 4500 in 2018. Generic TDF/FTC costs (in Euros) ranged from €10 (Romania) to €256.92 (Slovakia), while brand TDF/FTC costs ranged from €60 (Albania) to €853 (Finland). CONCLUSIONS Although the process of licensing TDF/FTC use for PrEP has improved, this is not yet reflected in the guidelines, nor has there been a reduction in the "informal" use of PrEP. PrEP remains a rarely used preventive method in CEE countries.
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Affiliation(s)
- T Balayan
- National Center for Disease Control and Prevention, Yerevan, Armenia
| | - J Begovac
- School of Medicine, University of Zagreb, Zagreb, Croatia
| | - A Skrzat-Klapaczyńska
- Department of Adults' Infectious Diseases, Medical University of Warsaw, Warsaw, Poland
| | - I Aho
- Helsinki University Hospital, Helsinki, Finland
| | - I Alexiev
- National Centre of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | - P Bukovinova
- Deptartment of Infectious Diseases and Geographical Medicine UH, University Hospital, Bratislava, Slovakia
| | - D Salemovic
- Clinic for Infectious Diseases, Belgrade, Serbia
| | | | - A Harxhi
- Department of Infectious Disease, Faculty of Medicine, University Hospital Center of Tirana, Tirana, Albania
| | - T Holban
- Nicolae Testemițanu State University of Medicine and Pharmacy, Chisinau, Republic of Moldova
| | - D Jevtovic
- Belgrade University School of Medicine Infectious Diseases Hospital, Belgrade, Serbia
| | - K Kase
- Department of Infectious Diseases, West Tallinn Central Hospital, Tallinn, Estonia
| | - B Lakatos
- Saint Laszlo Hospital National Center of HIV, Semmelweis University Faculty of Infectious Diseases, Budapest, Hungary
| | - I Latysheva
- Republican Clinical Hospital of Infectious Diseases of Ministry of Healthcare of Russian Federation, St Petersburg, Russia
| | - R Matulionyte
- Department of Infectious Diseases and Dermatovenerology, Infectious Diseases Centre, Vilnius University, Vilnius, Lithuania
| | - C Oprea
- Victor Babes Clinical Hospital for Infectious Diseases, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - A Papadopoulos
- Medical School -National and Kapodistrian University of Athens, University General Hospital "ATTIKON", Athens, Greece
| | - N Rukhadze
- Infectious Diseases, AIDS & Clinical Immunology Research Center, Tbilisi, Georgia
| | - D Sedlacek
- HIV Center University Hospital, Pilsen, Czech Republic
| | - J Tomazic
- Department of Infectious Diseases, University Medical Center Ljubljana, Ljubljana, Slovenia
| | - A Vassilenko
- Belarusian State Medical University, Minsk, Belarus
| | - M Vasylyev
- Lviv Regional Public Health Center, Lviv, Ukraine
| | - A Verhaz
- Clinic for Infectious Diseases, University Clinical Center of the Republic of Srpska, Banja Luka, Banja Luka, RS, Bosnia & Herzegovina, Banja Luka, Bosnia and Herzegovina
| | - N Yancheva
- Department for AIDS, Specialized Hospital for Active Treatment of Infectious and Parasitic Diseases - Sofia, Medical University Sofia, Sofia, Bulgaria
| | - O Yurin
- Central Research Institute of Epidemiology, Federal AIDS Centre, Moscow, Russian Federation
| | - A Horban
- Department of Adults' Infectious Diseases, Medical University of Warsaw, Warsaw, Poland
| | - J D Kowalska
- Department of Adults' Infectious Diseases, Medical University of Warsaw, Warsaw, Poland.,HIV Out-Patient Clinic, Hospital for Infectious Diseases, Warsaw, Poland
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Behon A, Schwertner WR, Merkel ED, Kovacs A, Kutyifa V, Lakatos B, Zima E, Geller L, Kosztin A, Merkely B. 40Lateral left ventricular lead position and long interlead electrical delay predict long-term all-cause mortality in cardiac resynchronization therapy patients. Europace 2020. [DOI: 10.1093/europace/euaa162.287] [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: 11/13/2022] Open
Abstract
Abstract
Background
There is limited data on the association of left ventricular (LV) lead position and long-term clinical outcome in patients after cardiac resynchronization therapy (CRT).
Purpose
We evaluated the mid-term echocardiographic response and long-term all-cause mortality of patients who underwent CRT implantation by LV lead non-apical positions and further characterized them by right to left ventricular, interlead electrical delay (IED).
Methods
In our retrospective registry patients after CRT implantation between 2000 and 2018 were registered. Those with non-apical LV lead location were classified into anterior (n = 111), posterior (n = 652), and lateral (n = 1373) positions. Primary endpoint was all-cause mortality assessed by univariate- and Cox multivariate analyses. Secondary endpoint was echocardiographic response within 6 months after CRT implantation.
Results
From 2136 patients 1180 (55.2%) reached the primary endpoint during the mean follow up time of 4.5 years. Univariate analysis showed patients with lateral position had significantly better outcome compared to others (HR 0.80; 95% CI: 0.71-0.90; p < 0.01), which was also confirmed by Cox multivariate analysis (HR 0.69; 95% CI: 0.50-0.93; p = 0.02) after adjusting for relevant clinical covariates such as IED and LBBB. The median value of IED was 106 (89/124) ms in the total patient cohort, which was significantly longer in the lateral group [anterior 80 (60/100) ms vs. lateral 110 (91/128) ms vs. posterior 100 (85/120) ms; p< 0.01]. When echocardiographic response was further evaluated in patients with lateral position, those with an IED longer than 110 ms (ROC AUC 0.64, 95% CI: 0.54-0.74; p = 0.01) showed the greatest benefit within 6 months.
Conclusions
After CRT implantation the most beneficial outcome was associated with lateral left ventricular lead location, moreover the greatest echocardiographic response was found when interlead electrical delay was longer than 110 ms in this group.
Abstract Figure. All-cause mortality of total cohort
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Affiliation(s)
- A Behon
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - W R Schwertner
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - E D Merkel
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - A Kovacs
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - V Kutyifa
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - B Lakatos
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - E Zima
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - L Geller
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - A Kosztin
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - B Merkely
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
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7
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Sydo N, Csulak E, Major D, Erdi J, Sydo T, Gyore I, Petrov I, Czimbalmos CS, Vago H, Lakatos B, Kovacs A, Allison TG, Merkely B. P3105Cardiopulmonary exercise testing normal values for young athletes and non-athletes. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 11/14/2022] Open
Abstract
Abstract
Introduction
Cardiopulmonary exercise testing (CPET) is an important diagnostic method to evaluate athletes and non-athletes, however we do not have widely accepted normal values for correct evaluation and interpretation in the young.
Goals
Our aim was to compare CPET parameters of young athletes and non-athletes and determine reference values.
Methods
Exercise tests were performed in young non-athletes, aged <18 years between 2011 to 2016 at Mayo Clinic. Athletes underwent detailed sports cardiology screening including CPET at Semmelweis University Heart and Vascular Center between 2016 and 2018. Individuals with cardiovascular disease were excluded. We created 2 subgroups in both sexes: 12–14 years (Group 1), 15–17 years (Group 2). Statistical analysis was performed using SAS with analysis of variance under the general linear model adjusting for age, body mass index and test effort based on peak respiratory exchange ratio (RER).
Results
A total of 212 athletes (92% male, 15.5±0.6ys) and 207 non-athletes (68% male, 15.0±0.7ys) were included in the analysis. In Group 1 boys, athletes have higher peak HR (200.0±9.2 vs 188.5±16.8 bpm, p<0.0001), HR reserve (117.1±14.5 vs 108.9±19.8 bpm p<0.05), VO2 max (53.7±6.6 vs 44.7±9.1 mL/kg/min p<0.0001), ventilation (VE) (120.3±25.0 vs 70.7±21.6 L/min p<0.0001) and RER (1.12±0.0 vs 1.07±0.08, p <.001) compared to controls. In Group 2 boys, there was no difference in peak HR and HR reserve, but athletes have higher VO2 max (57.2±4.7 vs 45.3±9.3 mL/kg/min, p<0.0001) and VE (150.7±23.7 vs 104.1±25.9 L/min, p<0.0001), similarly as Group 2 girls: VO2 max (46.3±3.6 vs 34.9±8.5 mL/kg/min p<0.0001), VE (118.7±12.5 vs 68.4±20.6 L/min, p<0.0001). In male athletes, peak HR (200.6±9.2 vs 196.5±7.4 bpm p<0.05) and HR recovery (34.2±9.8 vs 29.8±11.1 bpm p<0.05) decreases with age, while VO2 max (53.7±6.6 vs 57.2±4.7 mL/kg/min, p<0.001) and VE (120.3±24.9 vs 150.7±23.7 L/min, p<0.0001) increases. Lower cut-off values were determined in each group (Figure).
Lower-cut off values
Conclusion
We created a unique Mayo-Semmelweis database of young athletes and non-athletes. As a result of intensive training, athletes show higher levels of CPET variables vs non-athletes. Our study provides CPET reference values in the pediatric age group, applying them could contribute to correct evaluation and interpretation of CPET, increasing its diagnostic potential.
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Affiliation(s)
- N Sydo
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - E Csulak
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - D Major
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - J Erdi
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - T Sydo
- Csolnoky Ferenc Hospital, Cardiology, Veszprem, Hungary
| | - I Gyore
- University of Physical Education, Budapest, Hungary
| | - I Petrov
- Gyor Swimming Club, Gyor, Hungary
| | - C S Czimbalmos
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - H Vago
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - B Lakatos
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - A Kovacs
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
| | - T G Allison
- Mayo Clinic, Rochester, United States of America
| | - B Merkely
- Semmelweis University Heart and Vascular Center, Budapest, Hungary
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Czimbalmos C, Csecs I, Dohy Z, Toth A, Suhai FI, Szabo L, Kiss O, Sydo N, Kovacs A, Lakatos B, Merkely B, Vago H. P310Differentiation between arrhythmogenic right ventricular cardiomyopathy and athlete's heart using cardiac magnetic resonance based derived parameters and strain analysis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0145] [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
Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a major cause of sudden cardiac death in young athletes. However diagnosing ARVC in highly trained athletes may be complicated because of overlapping features such as elevated right ventricular (RV) end-diastolic volume index or T-wave inversion in precordial leads. The revised Task Force criteria contain no specific cut-off value for professional athletes. Additional CMR parameters and CMR deformation imaging may have an added diagnostic value in this special patient population.
Our goal was to determine novel CMR parameters which can help to distinguish between ARVC and athlete's heart. CMR examination of ARVC patients with definite diagnosis based on the revised Task Force criteria (n=34; 41±13 y, 22 male) and healthy professional athletes (members of the Hungarian national water polo, canoing or rowing team performing minimum of 15 hours of training per week, n=34, 32±6 y, 22 male) was performed. We evaluated left and right ventricular end-systolic, end-diastolic (EDVi) and stroke volume index, ejection fraction (EF) and mass. We established derived parameters such as ejection fraction ratio (LVEF/RVEF) and end-diastolic volume ratio (LVEDV/RVEDV). Global and regional strain analysis for the right ventricle was performed using feature tracking technique. Area under the ROC curves (AUC) of conventional and derived CMR parameters and CMR based strain values were analysed.
There was no significant difference between RVEDVi of ARVC patients and athletes (124±17 vs 142±47), RVEF was lower in ARVC patients compared to athletes (56±5 vs 41±14%; p<0.001). Significant differences were found between athletes and ARVC patients in LVEDV/RVEDV (0.96±0.08 vs 0.82±0.23), LVEF/RVEF (1.04±0.06 vs 1.41±0.56), global circumferential strain (−34.8±5.9 vs −25.2±12.2) and regional strain values such as midventricular RV strain (−31.5±10.2 vs −20.0±13.4) or midventricular RV strain rate (−1.37±0.56 vs −1.04±0.68), respectively.
RVEF and LVEF/RVEF showed excellent (AUC of 0.9–1.0), RV global strain and RV midventricular strain values showed good diagnostic accuracy (AUC of 0.8–0.9), while RVEDVi showed poor diagnostic accuracy (AUC of 0.59).
Consequently, in highly trained healthy athletes RVEDVi is in the range of major Task Force criteria, while CMR based derived parameters such as LVEDV/RVEDV or LVEF/RVEF and both global and regional RV strain parameters can be useful parameters in the differential diagnosis.
Acknowledgement/Funding
National Research, Development and Innovation Office (NKFIH) of Hungary (K 120277), ÚNKP-18-3-IV New National Excellence Program of Human Capacities.
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Affiliation(s)
- C Czimbalmos
- Semmelweis University Heart Center, Budapest, Hungary
| | - I Csecs
- Semmelweis University Heart Center, Budapest, Hungary
| | - Z Dohy
- Semmelweis University Heart Center, Budapest, Hungary
| | - A Toth
- Semmelweis University Heart Center, Budapest, Hungary
| | - F I Suhai
- Semmelweis University Heart Center, Budapest, Hungary
| | - L Szabo
- Semmelweis University Heart Center, Budapest, Hungary
| | - O Kiss
- Semmelweis University Heart Center, Budapest, Hungary
| | - N Sydo
- Semmelweis University Heart Center, Budapest, Hungary
| | - A Kovacs
- Semmelweis University Heart Center, Budapest, Hungary
| | - B Lakatos
- Semmelweis University Heart Center, Budapest, Hungary
| | - B Merkely
- Semmelweis University Heart Center, Budapest, Hungary
| | - H Vago
- Semmelweis University Heart Center, Budapest, Hungary
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Kovacs A, Nabeshima Y, Lakatos B, Nagata Y, Tokodi M, Toser Z, Merkely B, Takeuchi M. 6066Equal significance of longitudinal and radial wall motion represents the normal right ventricular mechanical pattern: 3D echocardiographic study in 231 healthy volunteers. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 11/14/2022] Open
Abstract
Abstract
Three main mechanisms contribute to right ventricular (RV) pump function: (1) shortening of the longitudinal axis with traction of the tricuspid annulus towards the apex; (2) inward (radial) movement of the RV free wall, which is often referred as the “bellows effect”; and (3) bulging of the interventricular septum into the RV during the left ventricular contraction and stretching of the free wall over the septum (causing shortening in the anteroposterior direction). Despite the established clinical value of the functional changes among the aforementioned components, their relative importance remains to be quantified during physiological conditions.
Accordingly, the aim of our study was to evaluate the relative contribution of the different RV motion directions to global RV function on both global and segmental level in a large set of healthy individuals.
We have recruited 231 healthy volunteers (44% female, with a wide and balanced age range from 8 to 81 years) from two experienced centers performing transthoracic 3D echocardiography (3DE) on a routine basis. 3DE datasets focused on the RV were obtained using multi-beat acquisition. We determined RV volumes and subsequent ejection fraction (RVEF) by dedicated software. Using the ReVISION method, we have decomposed the motion of the RV to determine longitudinal (LEF), radial (REF) and anteroposterior ejection fraction (AEF). Their ratio to RVEF quantifies the relative contribution of the given component to global RV function. Moreover, regional subvolumes were also analyzed in a 15-segment model.
Mean value of RVEF was significantly higher in female subjects compared to male subjects (60±7 vs. 56±7%, p<0.001). The relative contributions of LEF and REF to RVEF were comparable, while the contribution of AEF was significantly lower (LEF/RVEF vs. REF/RVEF vs. AEF/RVEF: 0.48±0.08 vs. 0.49±0.07 vs. 0.39±0.11, p<0.001) in the pooled population as well as in the genders separately. In line with higher RVEF found in women, female gender was associated with a higher longitudinal and radial contribution compared to males, however, AEF was similar (women vs. men; LEF/RVEF: 0.49±0.08 vs. 0.47±0.07, p<0.05; REF/RVEF: 0.50±0.07 vs. 0.48±0.06, p<0.01; AEF/RVEF: 0.38±0.12 vs. 0.40±0.10, p=NS). Interestingly, AEF/RVEF showed a significant deterioration with age (r=−0.354, p<0.001), while age-dependency of the longitudinal and radial contributions were not observed concerning both genders. An age-related decrease could be demonstrated by the volume fractions of the 5 septal volumetric segments (r=−0.229, p<0.001).
Motion decomposition and the 15 segments
In physiological conditions, the relative importance of longitudinal and radial wall motions is similar in determining global RV function. Aging accompanied by a decrease in anteroposterior shortening, which may point to a deteriorating systolic LV-RV interaction. Our results may facilitate further research concerning the alterations of RV mechanical pattern in various disease states.
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Affiliation(s)
- A Kovacs
- Semmelweis University, Budapest, Hungary
| | - Y Nabeshima
- University of Occupational and Environmental Health, Second Department of Internal Medicine, Kitakyushu, Japan
| | - B Lakatos
- Semmelweis University, Budapest, Hungary
| | - Y Nagata
- University of Occupational and Environmental Health, Second Department of Internal Medicine, Kitakyushu, Japan
| | - M Tokodi
- Semmelweis University, Budapest, Hungary
| | - Z Toser
- Argus Cognitive, Inc., Hanover, United States of America
| | - B Merkely
- Semmelweis University, Budapest, Hungary
| | - M Takeuchi
- University of Occupational and Environmental Health, Department of Laboratory and Transfusion Medicine, Kitakyushu, Japan
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Bidviene J, Kovacs A, Lakatos B, Tokodi M, Surkova E, Cavalli G, Prevedello F, Ereminiene E, Vaskelyte J, Perazzolo-Marra M, Iliceto S, Badano L, Muraru D. P156Right ventricular mechanics adapts differently to distinct loading conditions. A 3-dimensional echocardiography study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p156] [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: 11/14/2022] Open
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11
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Bidviene J, Surkova E, Kovacs A, Lakatos B, Tokodi M, Aruta P, Rodriguez-Zanella H, Cherata D, Cucchini U, Ereminiene E, Vaskelyte J, Iliceto S, Badano L, Muraru D. P1433In healthy volunteers, the relative contribution of the radial component of right ventricular wall motion to global right ventricular ejection fraction is as important as its longitudinal shortening. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1433] [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: 11/14/2022] Open
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Doronina A, Kovacs A, Lakatos B, Kantor Z, Edes I, Kosztin A, Abramov A, Merkely B. P1538Gender differences in right ventricular function of athlete's heart. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1538] [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: 11/12/2022] Open
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13
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Molnar A, Kovacs A, Kolossvary M, Lakatos B, Tarnoki A, Tarnoki D, Maurovich-Horvat P, Jermendy G, Sengupta P, Merkely B. P1446Common genetic background of left ventricular global longitudinal strain and diastolic function: new insights into the understanding of heart failure with preserved ejection fraction? Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1446] [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: 11/14/2022] Open
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14
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Erdem H, Inan A, Guven E, Hargreaves S, Larsen L, Shehata G, Pernicova E, Khan E, Bastakova L, Namani S, Harxhi A, Roganovic T, Lakatos B, Uysal S, Sipahi OR, Crisan A, Miftode E, Stebel R, Jegorovic B, Fehér Z, Jekkel C, Pandak N, Moravveji A, Yilmaz H, Khalifa A, Musabak U, Yilmaz S, Jouhar A, Oztoprak N, Argemi X, Baldeyrou M, Bellaud G, Moroti RV, Hasbun R, Salazar L, Tekin R, Canestri A, Čalkić L, Praticò L, Yilmaz-Karadag F, Santos L, Pinto A, Kaptan F, Bossi P, Aron J, Duissenova A, Shopayeva G, Utaganov B, Grgic S, Ersoz G, Wu AKL, Lung KC, Bruzsa A, Radic LB, Kahraman H, Momen-Heravi M, Kulzhanova S, Rigo F, Konkayeva M, Smagulova Z, Tang T, Chan P, Ahmetagic S, Porobic-Jahic H, Moradi F, Kaya S, Cag Y, Bohr A, Artuk C, Celik I, Amsilli M, Gul HC, Cascio A, Lanzafame M, Nassar M. The burden and epidemiology of community-acquired central nervous system infections: a multinational study. Eur J Clin Microbiol Infect Dis 2017; 36:1595-1611. [PMID: 28397100 DOI: 10.1007/s10096-017-2973-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [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: 02/12/2017] [Accepted: 03/22/2017] [Indexed: 12/11/2022]
Abstract
Risk assessment of central nervous system (CNS) infection patients is of key importance in predicting likely pathogens. However, data are lacking on the epidemiology globally. We performed a multicenter study to understand the burden of community-acquired CNS (CA-CNS) infections between 2012 and 2014. A total of 2583 patients with CA-CNS infections were included from 37 referral centers in 20 countries. Of these, 477 (18.5%) patients survived with sequelae and 227 (8.8%) died, and 1879 (72.7%) patients were discharged with complete cure. The most frequent infecting pathogens in this study were Streptococcus pneumoniae (n = 206, 8%) and Mycobacterium tuberculosis (n = 152, 5.9%). Varicella zoster virus and Listeria were other common pathogens in the elderly. Although staphylococci and Listeria resulted in frequent infections in immunocompromised patients, cryptococci were leading pathogens in human immunodeficiency virus (HIV)-positive individuals. Among the patients with any proven etiology, 96 (8.9%) patients presented with clinical features of a chronic CNS disease. Neurosyphilis, neurobrucellosis, neuroborreliosis, and CNS tuberculosis had a predilection to present chronic courses. Listeria monocytogenes, Staphylococcus aureus, M. tuberculosis, and S. pneumoniae were the most fatal forms, while sequelae were significantly higher for herpes simplex virus type 1 (p < 0.05 for all). Tackling the high burden of CNS infections globally can only be achieved with effective pneumococcal immunization and strategies to eliminate tuberculosis, and more must be done to improve diagnostic capacity.
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Affiliation(s)
- H Erdem
- Principal Coordinator of ID-IRI, Ankara, Turkey.
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Medical Academy, 06010, Etlik, Ankara, Turkey.
| | - A Inan
- Department of Infectious Diseases and Clinical Microbiology, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey
| | - E Guven
- Beytepe Murat Erdi Eker State Hospital, Ankara, Turkey
| | - S Hargreaves
- International Health Unit, Section of Infectious Diseases and Immunity, Commonwealth Building, Hammersmith Campus, Imperial College London, London, UK
| | - L Larsen
- Department of Infectious Diseases Q, Odense University Hospital, Odense, Denmark
| | - G Shehata
- Department of Neurology and Psychiatry, Assiut University Hospital, Assiut, Egypt
| | - E Pernicova
- Avenier, Centres for Vaccination and Travel Medicine, Prague, Czech Republic
- Faculty Hospital Brno, Department of Infectious Diseases, Brno, Czech Republic
| | - E Khan
- Shifa International Hospital, Islamabad, Pakistan
| | - L Bastakova
- Faculty Hospital Brno, Department of Infectious Diseases and Masaryk University Faculty of Medicine, Brno, Czech Republic
| | - S Namani
- Infectious Diseases Clinic, University Clinical Center of Kosovo, Prishtina, Kosovo
| | - A Harxhi
- Service of Infectious Disease, University Hospital Center of Tirana, Tirana, Albania
| | - T Roganovic
- Infectious Diseases Clinic, University Hospital Clinical Center Banja Luka, Banja Luka, Bosnia and Herzegovina
| | - B Lakatos
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - S Uysal
- Department of Infectious Diseases and Clinical Microbiology, Seyfi Demirsoy State Hospital, Buca, İzmir, Turkey
| | - O R Sipahi
- Department of Infectious Diseases and Clinical Microbiology, Ege University School of Medicine, Izmir, Turkey
| | - A Crisan
- Department of Infectious Diseases, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - E Miftode
- Hospital of Infectious Diseases, Gr. T. Popa University of Medicine and Pharmacy, Iasi, Romania
| | - R Stebel
- Faculty Hospital Brno, Department of Infectious Diseases and Masaryk University Faculty of Medicine, Brno, Czech Republic
| | - B Jegorovic
- Clinic for Infectious and Tropical Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Z Fehér
- Department of Infectious Diseases, Markusovszky University Teaching Hospital, Szombathely, Hungary
| | - C Jekkel
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - N Pandak
- General Hospital Slavonski Brod, Department for Infectious Diseases, School of Medicine, University of Split, Split, Croatia
| | - A Moravveji
- Social Determinants of Health Research Center, Department of Community Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - H Yilmaz
- Department of Infectious Diseases and Clinical Microbiology, Ondokuz Mayis University School of Medicine, Samsun, Turkey
| | - A Khalifa
- Department of Neurology, Damascus Hospital, Damascus, Syria
| | - U Musabak
- Department of Immunology and Allergy, Losante Hospital, Ankara, Turkey
| | - S Yilmaz
- Gulhane Medical Academy, Blood Bank, Clinical Microbiology Division, Ankara, Turkey
| | - A Jouhar
- Department of Neurology, Damascus Hospital, Damascus, Syria
| | - N Oztoprak
- Antalya Education and Research Hospital, Antalya, Turkey
| | - X Argemi
- Infectious Diseases Department, Nouvel Hôpital Civil, Strasbourg, France
| | - M Baldeyrou
- Infectious Diseases Department, Nouvel Hôpital Civil, Strasbourg, France
| | - G Bellaud
- Department of Infectious Diseases, Tenon University Hospital, Paris, France
| | - R V Moroti
- Carol Davila University of Medicine and Pharmacy and Matei Bals National Institute for Infectious Diseases, Bucharest, Romania
| | - R Hasbun
- Medical School, Department of Infectious Diseases, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - L Salazar
- Medical School, Department of Infectious Diseases, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - R Tekin
- Department of Infectious Diseases and Clinical Microbiology, Dicle University School of Medicine, Diyarbakir, Turkey
| | - A Canestri
- Department of Infectious Diseases, Tenon University Hospital, Paris, France
| | - L Čalkić
- Department of Infectious Diseases, Zenica Cantonal Hospital, Zenica, Bosnia and Herzegovina
| | - L Praticò
- University Division of Infectious and Tropical Diseases, Piazza Spedali Civili, 25123, Brescia, Italy
| | - F Yilmaz-Karadag
- Goztepe Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Medeniyet University, Istanbul, Turkey
| | - L Santos
- Infectious Diseases Service, Centro Hospitalar São João and Faculty of Medicine, University of Porto, Porto, Portugal
| | - A Pinto
- Infectious Diseases Service, Centro Hospitalar São João and Faculty of Medicine, University of Porto, Porto, Portugal
| | - F Kaptan
- Department of Infectious Diseases and Clinical Microbiology, Katip Celebi University School of Medicine, Izmir, Turkey
| | - P Bossi
- Department Maladies Infectieuses, Institut Pasteur de Paris-HPA, Paris, France
| | - J Aron
- Department Maladies Infectieuses, Institut Pasteur de Paris-HPA, Paris, France
| | - A Duissenova
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - G Shopayeva
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - B Utaganov
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - S Grgic
- Clinic for Infectious Diseases, University Hospital of Mostar, Mostar, Bosnia and Herzegovina
| | - G Ersoz
- Department of Infectious Diseases and Clinical Microbiology, Mersin University School of Medicine, Mersin, Turkey
| | - A K L Wu
- Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China
| | - K C Lung
- Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China
| | - A Bruzsa
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - L B Radic
- Department of Infectious Diseases, General Hospital Dubrovnik, Dubrovnik, Croatia
| | - H Kahraman
- Department of Infectious Diseases and Clinical Microbiology, Ege University School of Medicine, Izmir, Turkey
| | - M Momen-Heravi
- Department of Infectious Diseases, Social Determinants of Health Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - S Kulzhanova
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - F Rigo
- Unit of Infectious Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - M Konkayeva
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - Z Smagulova
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - T Tang
- Infectious Diseases Team, Department of Medicine, Queen Elizabeth Hospital, Hong Kong, China
| | - P Chan
- Neurology Team, Department of Medicine, Queen Elizabeth Hospital, Hong Kong, China
| | - S Ahmetagic
- University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina
| | - H Porobic-Jahic
- University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina
| | - F Moradi
- Infectious and Tropical Diseases Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - S Kaya
- Department of Infectious Diseases and Clinical Microbiology, Karadeniz Technical University School of Medicine, Trabzon, Turkey
| | - Y Cag
- School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Medeniyet University, Istanbul, Turkey
| | - A Bohr
- Institute of Inflammation Research, Department of Infectious Diseases and Rheumatology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - C Artuk
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Training and Research Hospital, Ankara, Turkey
| | - I Celik
- Department of Infectious Diseases and Clinical Microbiology, Kayseri Training and Research Hospital, Kayseri, Turkey
| | - M Amsilli
- Infectious Diseases Unit, CHU Bicètre, Paris, France
| | - H C Gul
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Training and Research Hospital, Ankara, Turkey
| | - A Cascio
- Department of Health Promotion Sciences and Mother and Child Care "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - M Lanzafame
- Unit of Infectious Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - M Nassar
- Infection Control Department, Saudi German Hospital Group, Jeddah, Saudi Arabia
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Kovacs A, Assabiny A, Lakatos B, Apor A, Nagy A, Kutyifa V, Merkely B, Ulbrich S, Sveric K, Rady M, Strasser R, Ebner B, Lervik Nilsen LC, Brekke B, Missant C, Ortega A, Haemers P, Tong L, Sutherland G, D'hooge J, Stoylen A, Gurzun MM, Ionescu A, Santoro A, Federico Alvino F, Carlo Gaetano Sassi C, Giovanni Antonelli G, Sergio Mondillo S, Chumarnaya T, Alueva Y, Kochmasheva V, Mikhailov S, Ostern O, Solovyova O, Revishvili A, Markhasin V, Rodriguez Munoz D, Carbonell Sanroman A, Moya Mur J, Fernandez Santos S, Lazaro Rivera C, Valverde Gomez M, Casas Rojo E, Garcia Martin A, Fernandez-Golfin C, Zamorano Gomez J, Kanda T, Fujita M, Masuda M, Iida O, Okamoto S, Ishihara T, Nanto K, Shiraki T, Takahara M, Uematsu M, Kolesnyk MY, Victor K, Lux D, Carr-White G, Barrett N, Glover G, Langrish C, Meadows C, Ioannou N, Castaldi B, Vida V, Argiolas A, Maschietto N, Cerutti A, Biffanti R, Reffo E, Padalino M, Stellin G, Milanesi O, Simova I, Katova T, Galderisi M, Lalov I, Onciul S, Alexandrescu A, Petre I, Zamfir D, Onut R, Tautu O, Dorobantu M, Caldas A, Ladeia A, D'almeida J, Guimaraes A, Ball C, Abdelmoneim Mohamed S, Huang R, Zysek V, Mantovani F, Scott C, Mccully R, Mulvagh S, Lee JH, Cho G, Mihaila S, Muraru D, Aruta P, Piasentini E, Cavalli G, Ucci L, Peluso D, Vinereanu D, Iliceto S, Badano L, Ozawa K, Funabashi N, Takaoka H, Kamata T, Nomura F, Kobayashi Y, Ovsianas J, Valuckiene Z, Mizariene V, Jurkevicius R, Reskovic Luksic V, Dosen D, Cekovic S, Separovic Hanzevacki J, Simova I, Katova T, Santoro C, Galderisi M, Kalcik M, Cakal B, Gursoy M, Astarcioglu M, Yesin M, Gunduz S, Karakoyun S, Cersit S, Toprak C, Ozkan M. Club 35 Poster session 3: Friday 5 December 2014, 08:30-18:00 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2014. [DOI: 10.1093/ehjci/jeu263] [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: 11/13/2022] Open
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Tornero E, Senneville E, Euba G, Petersdorf S, Rodriguez-Pardo D, Lakatos B, Ferrari MC, Pilares M, Bahamonde A, Trebse R, Benito N, Sorli L, del Toro MD, Baraiaetxaburu JM, Ramos A, Riera M, Jover-Sáenz A, Palomino J, Ariza J, Soriano A. Characteristics of prosthetic joint infections due to Enterococcus sp. and predictors of failure: a multi-national study. Clin Microbiol Infect 2014; 20:1219-24. [PMID: 24943469 DOI: 10.1111/1469-0691.12721] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [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: 12/15/2013] [Revised: 06/03/2014] [Accepted: 06/12/2014] [Indexed: 02/05/2023]
Abstract
The objective of this study was to review the characteristics and outcome of prosthetic joint infections (PJI) due to Enterococcus sp. collected in 18 hospitals from six European countries. Patients with a PJI due to Enterococcus sp. diagnosed between January 1999 and July 2012 were retrospectively reviewed. Relevant information about demographics, comorbidity, clinical characteristics, microbiological data, surgical treatment and outcome was registered. Univariable and multivariable analyses were performed. A total of 203 patients met the inclusion criteria. The mean (SD) was 70.4 (13.6) years. In 59 patients the infection was diagnosed within the first 30 days (29.1%) from arthroplasty, in 44 (21.7%) between 31 and 90 days, in 54 (26.6%) between 91 days and 2 years and in 43 (21%) after 2 years. Enterococcus faecalis was isolated in 176 cases (89%). In 107 (54%) patients the infection was polymicrobial. Any comorbidity (OR 2.53, 95% CI 1.18-5.40, p 0.01), and fever (OR 2.65, 95% CI 1.23-5.69, p 0.01) were independently associated with failure. The only factor associated with remission was infections diagnosed later than 2 years (OR 0.25, 95% CI 0.09-0.71, p 0.009). In conclusion, prosthetic joint infections due to Enterococcus sp. were diagnosed within the first 2 years from arthroplasty in >70% of the patients, almost 50% had at least one comorbidity and infections were frequently polymicrobial (54%). The global failure rate was 44% and patients with comorbidities, fever, and diagnosed within the first 2 years from arthroplasty had a poor prognosis.
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Affiliation(s)
- E Tornero
- Bone and Joint Infection Unit, Hospital Clínic, IDIBAPS, Barcelona, Spain
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Erdem H, Ozturk-Engin D, Elaldi N, Gulsun S, Sengoz G, Crisan A, Johansen I, Inan A, Nechifor M, Al-Mahdawi A, Civljak R, Ozguler M, Savic B, Ceran N, Cacopardo B, Inal A, Namiduru M, Dayan S, Kayabas U, Parlak E, Khalifa A, Kursun E, Sipahi O, Yemisen M, Akbulut A, Bitirgen M, Dulovic O, Kandemir B, Luca C, Parlak M, Stahl J, Pehlivanoglu F, Simeon S, Ulu-Kilic A, Yasar K, Yilmaz G, Yilmaz E, Beovic B, Catroux M, Lakatos B, Sunbul M, Oncul O, Alabay S, Sahin-Horasan E, Kose S, Shehata G, Andre K, Alp A, Ćosic G, Gul HC, Karakas A, Chadapaud S, Hansmann Y, Harxhi A, Kirova V, Masse-Chabredier I, Oncu S, Sener A, Tekin R, Deveci O, Karabay O, Agalar C. The microbiological diagnosis of tuberculous meningitis of Haydarpasa-1 study. Clin Microbiol Infect 2014; 20:O600-8. [DOI: 10.1111/1469-0691.12478] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 11/21/2013] [Accepted: 11/22/2013] [Indexed: 12/17/2022]
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Lakatos B, Jakopp B, Widmer A, Frei R, Pargger H, Elzi L, Battegay M. Evaluation of treatment outcomes for Stenotrophomonas maltophilia bacteraemia. Infection 2014; 42:553-8. [PMID: 24627266 DOI: 10.1007/s15010-014-0607-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [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: 12/23/2013] [Accepted: 02/22/2014] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The goal of this study was to retrospectively collect data about treatment outcomes in patients diagnosed with Stenotrophomonas maltophilia bacteraemia over a period of 20 years and evaluate these data with respect to the efficacy of treatment options. METHODS The setting was a 700-bed tertiary care hospital in a large urban area. Hospital databases and medical records provided information about episodes of S. maltophilia, patient characteristics and treatment outcomes. Patients with at least one positive blood culture for S. maltophilia were included in the study. Data were analysed with respect to clinical improvement and mortality ≤30 days after the onset of infection. We compared patient characteristics, laboratory values and treatments by using the Chi-square or Fisher's exact tests and the Mann-Whitney test. RESULTS We investigated 27 patients with S. maltophilia bacteraemia. The focus of infection was a central venous catheter in 18 (67 %) cases. The 30-day mortality rate was 11 %. All patients who were treated with an antibiotic that was effective in vitro against the pathogen recovered clinically and survived ≥30 days after the onset of infection. The most frequently used antibiotic was trimethoprim-sulfamethoxazole administered alone or in combination with a fluoroquinolone. CONCLUSIONS Despite the fact that S. maltophilia is resistant to multiple antibiotics, the prognosis for patients with S. maltophilia bacteraemia is good when they are treated with antibiotics that are effective against this pathogen in vitro.
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Affiliation(s)
- B Lakatos
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Basel, Petersgraben 4, 4031, Basel, Switzerland
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Szolnoky G, Lakatos B, Keskeny T, Varga E, Varga M, Dobozy A, Kemény L. Intermittent pneumatic compression acts synergistically with manual lymphatic drainage in complex decongestive physiotherapy for breast cancer treatment-related lymphedema. Lymphology 2009; 42:188-194. [PMID: 20218087] [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: 05/28/2023]
Abstract
The application of intermittent pneumatic compression (IPC) as a part of complex decongestive physiotherapy (CDP) remains controversial. The aim of this study was to investigate whether the combination of IPC with manual lymph drainage (MLD) could improve CDP treatment outcomes in women with secondary lymphedema after breast cancer treatment. A randomized study was undertaken with 13 subjects receiving MLD (60 min) and 14 receiving MLD (30 min) plus IPC (30 min) followed by standardized components of CDP including multilayered compression bandaging, physical exercise, and skin care 10 times in a 2-week-period. Efficacy of treatment was evaluated by limb volume reduction and a subjective symptom questionnaire at end of the treatment, and one and two months after beginning treatment. The two groups had similar demographic and clinical characteristics. Mean reductions in limb volumes for each group at the end of therapy, and at one and two months were 7.93% and 3.06%, 9.02% and 2.9%, and 9.62% and 3.6%, respectively (p < 0.05 from baseline for each group and also between groups at each measurement). Although a significant decrease in the subjective symptom survey was found for both groups compared to baseline, no significant difference between the groups was found at any time point. The application of IPC with MLD provides a synergistic enhancement of the effect of CDP in arm volume reduction.
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Affiliation(s)
- G Szolnoky
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary.
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Jantová S, Letasiová S, Repický A, Ovádeková R, Lakatos B. The effect of 3-(5-nitro-2-thienyl)-9-chloro-5-morpholin-4-yl[1,2,4]triazolo[4,3-c]quinazoline on cell growth, cell cycle, induction of DNA fragmentation, and activity of caspase 3 in murine leukemia L1210 cells and fibroblast NIH-3T3 cells. Cell Biochem Funct 2006; 24:519-30. [PMID: 16342136 DOI: 10.1002/cbf.1296] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [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: 11/08/2022]
Abstract
Quinazolines are multitarget agents, which have broad spectrum of biological activity, and some of them are now in cancer clinical testing. 3-(5-nitro-2-thienyl)-9-chloro-5-morpholin-4-yl[1,2,4]triazolo[4,3-c]quinazoline is a new synthetically prepared derivative, which in our previous study showed cytotoxic effects on cancer cell lines HeLa and B16. Quinazoline, at micromolar concentrations, induced morphological changes and necrosis of B16 cells, and at nanomolar concentrations it produced changes of F-actin cytoskeleton. It did not cause changes in the cell cycle, did not induce apoptotic cell death in B16 cells, did not have a mutagenic effect, and did not even behave as a typical intercalating agent. Little significant reduction of tumor volume in intramuscular transplanted B16 cells was observed. The aim of the present study was to examine the cytotoxic effect of 3-(5-nitro-2-thienyl)-9-chloro-5-morpholin-4-yl[1,2,4]triazolo[4,3-c]quinazoline on murine leukemia L1210 cells and fibroblast NIH-3T3 cells. Induction of cell morphology and cell cycle changes, induction of apoptosis and caspase 3 activity were studied. Quinazoline acted cytotoxically on both cell lines. The sensitivity of leukemia L1210 cells to the quinazoline was higher than that of fibroblast NIH-3T3. The IC(100) was 12 microM for L1210 cells and 24 microM for NIH-3T3 cells. No effect of quinazoline on the cell cycle profile of L1210 and NIH-3T3 was detected, however, quinazoline induced an increase of the sub-G(0) cell fraction, apoptotic DNA fragmentation, and apoptotic morphological changes at a concentration of 12 microM. This quinazoline concentration induced caspase 3 activity. Our results demonstrated that induction of apoptotic cell death via activation of caspase 3 contributed to the cytotoxic effects of 3-(5-nitro-2-thienyl)-9-chloro-5-morpholin-4-yl[1,2,4]triazolo[4,3-c]quinazoline in murine leukemia L1210 cells.
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Affiliation(s)
- S Jantová
- Department of Biochemistry and Microbiology, Faculty of Chemical and Food Technology, Slovak University of Technology, Radlinského 9, SK-81237 Bratislava, Slovak Republic.
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Lépine S, Le Stunff H, Lakatos B, Sulpice JC, Giraud F. ATP-induced apoptosis of thymocytes is mediated by activation of P2 X 7 receptor and involves de novo ceramide synthesis and mitochondria. Biochim Biophys Acta Mol Cell Biol Lipids 2005; 1761:73-82. [PMID: 16325464 DOI: 10.1016/j.bbalip.2005.10.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [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: 08/24/2005] [Revised: 10/03/2005] [Accepted: 10/05/2005] [Indexed: 11/26/2022]
Abstract
Thymocytes were reported to undergo apoptosis in the presence of extracellular ATP through the activation of the purinergic receptors P2 X 1R, P2 X 7R or both. We investigated the identity of the P2 X R and the signaling pathways involved in ATP-mediated apoptosis. Apoptosis elicited by ATP was prevented by inhibition of P2 X 7R, or in thymocytes bearing a mutated P2 X 7R, and reproduced with a P2 X 7R agonist, but not with a P2 X 1R agonist. Stimulation of thymocytes with either ATP or a P2 X 7R agonist was found to stimulate a late de novo ceramide synthesis and mitochondrial alterations. Inhibition of either processes attenuated apoptosis. Interestingly, stimulation with either ATP or a P2 X 1R agonist induced an early ceramide accumulation and a weak caspases-3/7 activation that did not lead to apoptosis. In conclusion, de novo ceramide generation and mitochondrial alterations, both resulting from P2 X 7R activation, were implicated in ATP-induced thymocyte apoptosis.
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Affiliation(s)
- S Lépine
- Biomembranes et Messagers Cellulaires, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 8619, Université Paris XI-Orsay, France
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Kaiserová K, Lakatos B, Peterajová E, Orlický J, Varecka L. Investigation of properties of the Ca2+ influx and of the Ca2+-activated K+ efflux (Gárdos effect) in vanadate-treated and ATP-depleted human red blood cells. Gen Physiol Biophys 2002; 21:429-42. [PMID: 12693714] [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: 03/01/2023]
Abstract
In this study the properties of the 45Ca2+ influx in human red blood cells (RBC) induced by NaVO3 or ATP-depletion were compared. Both NaVO3-induced and ATP-depletion-induced 45Ca2+ influxes were in the range 10(-6)-10(-5) mol Ca2+ x l(-1)cells x h(-1). The saturatability of ATP-depletion-induced 45Ca2+ influx with Ca2+ was much less pronounced than that of NaVO3-induced 45Ca2+ influx. The NaVO3-induced Ca2+ influx was sensitive to nifedipine (IC50 = 50 micromol/l) and Cu2+ (IC50 = 9 micromol/l) but these inhibitors had only a marginal effect when ATP-depletion was used as the Ca2+ influx inducer. On the other hand, polymyxin B (PXB) (1-5 mg/ml) strongly stimulated the ATP-depletion-induced 45Ca2+ influx whereas its effect on the NaVO3-induced Ca2+ influx was biphasic, with about 10% stimulation at lower PXB concentrations and an inhibition of 40% at higher concentrations. SDS-PAGE revealed that both NaVO3 and PXB induced changes in the protein phosphorylation pattern in the presence of Ca2+. NaVO3 stimulated the phosphorylation of several proteins and this effect was counteracted by PXB. The comparison of the kinetics and temperature dependencies of the Gárdos effect induced by NaVO3 and the ATP-depletion showed marked differences. The ability of NaVO3 to induce the Gárdos effect dramatically increased in ATP-depleted cells. These findings indicate that the 45Ca2+ influxes preceding the activation of the Ca2+-activated K+ efflux (Gárdos effect) stimulated by NaVO3 and by ATP-depletion, are mediated by different transport pathways. In addition, obtained results demonstrate that ATP-depletion and NaVO3-treatment exert additive action in triggering the Gárdos effect.
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Affiliation(s)
- K Kaiserová
- Department of Biochemistry and Microbiology, Slovak University of Technology, Bratislava, Slovakia
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Abstract
A boron-containing antibiotic, boromycin (BM), was found to influence the Ca2+ homeostasis in both excitable and non-excitable cells. In non-excitable cells (human erythrocytes and leucocytes) it inhibited the resting passive 45Ca2+ transport in 10(-6)-10(-5) mol/L concentrations. In human erythrocytes, the passive 15Ca2+ transport induced by the presence of 1 mmol/L NaVO3 was inhibited by boromycin (90% inhibition) as well. The inhibitory effect of BM on the NaVO3-induced passive 45Ca2+ transport was diminished in the presence of inhibitory concentrations of nifedipine (10 micromol/L -60% inhibition) or of those of K+o (75 mmol/L -20% inhibition). On the other hand, in rat brain synaptosomes, and rat cardiomyocytes, BM stimulated the passive 45Ca2+ transport in 'resting' cells at similar concentrations. In rat cardiomyocytes the stimulation was transient. The stimulatory effect on the passive 45Ca2+ transport in rat brain synaptosomes was accompanied with the increase of cytoplasmic Ca2+ concentration measured by means of the entrapped fluorescent Ca2+ chelator fura-2. The stimulatory effect of BM was diminished when synaptosomes were pre-treated with veratridine (10 micromol/L) which itself stimulated the passive 45Ca2+ transport. At saturating concentrations of veratridine, no stimulatory effect of BM was observed. These results could be explained by the indirect interaction of BM with both Ca2+ and Na+ transport systems via transmembrane ionic gradients of monovalent cations and could be useful in determining whether the cells belong to excitable, or non-excitable cells.
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Affiliation(s)
- B Lakatos
- Department of Biochemistry and Microbiology, Slovak University of Technology, Bratislava, Slovak Republic
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Tokodi I, Máj C, Deák J, Gyetvai B, Lakatos B, Simon G. [Unusual manifestations of Bartonella infections]. Orv Hetil 2001; 142:2197-200. [PMID: 11706512] [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: 02/22/2023]
Abstract
The authors review the cases of two patients with an atypical form of cat scratch disease. The first case exhibited ileocoecal and hepatoportal lymphadenitis, and the second case the emerging symptoms of a non-specific granulomatous process in the middle third of the right forearm, which caused a differential-diagnostic problem. Establishment of a diagnosis was possible only on the basis of the disease process and the pathological, serological and histopathological pictures of the lymphatic glands after other causes of the lymphadenopathy had been excluded. Following two weeks of antibiotic treatment, the patients were free of complaints- and symptoms. Bartonella antibody tests were performed on 5 cats living in the neighbourhood of the patients with titer determinations too in 3 cases.
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Affiliation(s)
- I Tokodi
- Fejér Megyei Szent Gyögy Kórház, Székesfehérvár, Perinatális Intenzív Centrum Csecsemó-gyermekosztály
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Simkovic M, Lakatos B, Tsuji FI, Muto S, Varecka L. The effect of azalomycin F on Ca2+ homeostasis in Trichoderma viride and Saccharomyces cerevisiae. Gen Physiol Biophys 2001; 20:131-44. [PMID: 11519685] [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: 02/21/2023]
Abstract
Azalomycin F (AMF), a macrocyclic lactone antibiotic, in concentrations of 10(-5) g/ml (10(-6) - 10(-5) mol/l) was found to stimulate both the 45Ca2+ influx and efflux in intact Trichoderma viride submerged mycelium and in cells of Saccharomyces cerevisiae without having Ca2+ ionophoric properties. AMF also inhibited ATP-dependent Ca2+ uptake in membrane fractions prepared from T. viride submerged mycelium. 45Ca2+ which had been accumulated in membrane fractions in an ATP-dependent manner was released upon addition of AMF. This release was observed in light organellar fractions (LOF) of S. cerevisiae and of T. viride submerged mycelium and, to a small extent, in heavy organellar fraction (HOF) of S. cerevisiae. No Ca2+ releasing effect of AMF was observed in HOF from T. viride submerged mycelium. In S. cerevisiae expressing Ca2+-dependent photoprotein aequorin, AMF induced transients of luminescence which reflect changes in the cytoplasmic Ca2+ concentration. The results suggest that the stimulation by AMF of the Ca2+ efflux from the mycelium (cells) could be explained by an increase of the cytoplasmic Ca2+ concentration due to the release of Ca2+ from microsomal membranes or to the stimulation of Ca2+ influx.
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Affiliation(s)
- M Simkovic
- Department of Biochemistry and Microbiology, Slovak University of Technology, Bratislava
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Szentmihályi K, Blázovics A, Kocsis I, Fehér E, Lakatos B, Vinkler P. THE EFFECT OF FAT RICH DIET AND ALCOHOL ON ION CONCENTRATION IN BILE FLUID IN RATS. Acta Alimentaria 2000. [DOI: 10.1556/aalim.29.2000.4.6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
The widespread presence of adenoviruses in various species makes it probable that infection and the carrier state also exist in cats. On the basis of these considerations, investigations were carried out to find antibodies against adenovirus in sera from different cat populations kept under different conditions. For the antibody detection, purified adenovirus was used in an indirect ELISA. To produce positive serum, SPF cats were immunized with a purified hexon preparation. Altogether 632 field sera of different origin were tested. Among field samples, adenovirus seropositivity varied between 10-26%.
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Affiliation(s)
- B Lakatos
- University of Veterinary Sciences, Budapest, Hungary
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Lakatos B, Farkas J, Egberink HF, Vennema H, Horzinek MC, Benkó M. Detection of adenovirus hexon sequence in a cat by polymerase chain reaction (short communication). Acta Vet Hung 2000; 47:493-7. [PMID: 10641339 DOI: 10.1556/avet.47.1999.4.9] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Adenoviral nucleic acid was detected by polymerase chain reaction (PCR) in pharyngeal and rectal swab samples of a cat seropositive for adenovirus and suffering from transient hepatic failure. The samples were taken at a one-year interval, and both faecal samples as well as the second pharyngeal sample were positive in PCR performed with general adenovirus primers. The size of the amplified products corresponded to that of the positive control. The identity of the amplicons was also confirmed by DNA sequencing. The 301 bp long hexon gene fragment was very similar to but distinguishable from the corresponding hexon sequence of human adenovirus type 2. This result suggests the possibility of persistent carrier status and shedding of adenovirus in cats.
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Affiliation(s)
- B Lakatos
- University of Veterinary Sciences, Budapest, Hungary.
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Abstract
The transport of radioactively labelled uracil into submerged mycelium of T. viride was measured by means of a membrane filtration technique. It was found to be time-dependent (up to 90 min) and concentration-dependent (up to 8 mmol l-1). Its concentration dependence was biphasic and consisted from the saturatable part (at the uracil concentration below 0.2 mmol l-1) with KM = 0.08 +/- 0.02 mmol l-1 and Vmax = 1.74 +/- 0.3 nmol (mg dry wt.)-1 h-1, and from the region at higher uracil concentration which showed only a weak saturatability with the substrate. The transport measured in the saturatable part of the curve was also pH- and temperature-dependent. The optimal pH was between 5.4 and 6.4 and the optimal temperature was at 37 degrees C. The activation energy of 54 kJ mol-1 and the temperature quotient of Q10 = 2.1 could be calculated from the temperature dependence. The entry of uracil was in part inhibited by nucleobases and their analogues, nucleosides, nucleotides and amino acids. The inhibitors had similar inhibitory efficiency about 50% at 0.2 mmol l-1. 3,3',4',5-tetrachlorosalicylanilide (TCS), the uncoupling agent, significantly inhibited the uracil transport, but its inhibitory efficiency decreased upon increasing the uracil concentration. Ionophore antibiotics valinomycin and monensin also inhibited the uracil transport. Inhibitors of RNA-polymerase, rifamycin and rifampicin were without effect. The results suggest that at low uracil concentrations (below 0.2 mmol l-1), its transport is mediated by a carrier and is driven by the electrochemical potential of protons. At higher uracil concentrations, the transport may be driven by the concentration difference of uracil with the contribution of the protonmotive force. It is feasible that inhibitors of uracil transport tested exert their inhibition by the dissipation of the driving force rather than by the direct competition with the substrate-binding site.
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Affiliation(s)
- B Lakatos
- Department of Biochemistry and Microbiology, Slovak University of Technology, Bratislava, Slovak Republic
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Szentmihályi K, Kéry A, Lakatos B, Sándor Z, Petri G. [Determination of 23 elements in lady's thistle (Silybum marianum L. Gaertner)]. Acta Pharm Hung 1998; 68:157-62. [PMID: 9703702] [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] [Indexed: 02/08/2023]
Abstract
23 elements (Al, As, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Li, Mg, Mn, Mo, Na, P, Pb, S, Ti, V, Zn) were measured in lady's thistle (Silybum marianum L.) herba and fructus by ICP-AES technique after digestion in teflon vessels. This is the first report about the content of these elements in the plant originated from Hungary. This measurements is important in view of plant physiology and pharmacology. Significant amounts of aluminium and iron were measured in lady's thistle herba. In the course of tea making, the relative concentration of some elements decreases because of the poor solubility of the compounds of these elements. The low concentration of these elements in teas in favourable in pharmacological aspect. No significant differences were found in boron, calcium, potassium and magnesium concentrations of lady's thistle fructus samples of different origin.
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Síró B, Szelekovszky S, Lakatos B, Mády G, Szathmári E, Karányi Z. [Local treatment of rheumatic diseases with propolis compounds]. Orv Hetil 1996; 137:1365-70. [PMID: 8757085] [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: 02/02/2023]
Abstract
The authors conducted a single blind, placebo controlled local therapy trial on a total of 190 patients involving the use of materials (i) topically and (ii) by iontophoresis for pain and/or inflammation of the organs of movement. The materials used comprised of the following: (i) purified propolis and propolis saturated with antiinflammatory trace metal elements and (ii) propolis saturated with trace metal elements and poplar bud ointment saturated with trace metal elements also. Both methods of application using all the three preparations significantly improved symptoms. The preparations saturated with metallic ions were more effective. The mild effect of the placebo treatment is explained by the treatment procedure itself. Side effects were not observed.
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Affiliation(s)
- B Síró
- Debreceni Orvostudományi Egyetem I. Belgyógyászati Klinika
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Monostory K, Lakatos B, Vereczkey L. [Cytochrome P-450: structure, function, induction and practical significance]. Acta Pharm Hung 1992; 62:318-32. [PMID: 1488918] [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] [Indexed: 12/27/2022]
Abstract
The liver contains a series of microsomal hemoproteins, called cytochromes P-450 which are mixed-function oxygenases involved in the metabolic oxygenation of diverse xenobiotic chemicals (drugs, pesticides, etc.). This enzyme system converts lipophilic foreign compounds into more water soluble products, thereby facilitating their elimination from the body. In general, cytochrome P-450-catalyzed oxidation results in detoxification, however the cytochromes P-450 can also convert certain xenobiotics to more toxic or carcinogenic products. Many of the individual isoenzyme forms of cytochrome P-450 are inducible by a wide variety of chemicals. After induction the concentration of total cytochrome P-450 in liver microsomes and the activity of different cytochrome P-450 forms increase. Elevated levels of cytochrome P-450 are the result of multiple mechanisms. Increased transcription of P-450 genes is a major mechanism of cytochrome P-450 induction. Higher levels of specific mRNAs are detectable soon after treatment with either "phenobarbital-like" or polycyclic aromatic compounds. Although increased transcription plays some role in the induction of cytochromes P-450 by other inducers like pregnenolone-16 alpha-carbonitrile (PCN)/glucocorticoids and "ethanol-type" compounds, post-transcriptional events are also very important. Cytochrome P-450 induction can be achieved by message stabilization and enhanced transport of mRNA from the nucleus to the cytoplasm that also increase the specific mRNA levels at the site of protein synthesis. Elevated cytochrome P-450 levels may also result from protein stabilization. Stabilization of cytochrome P-450 protein and/or mRNA are the main processes of induction by PCN/glucocorticoids and ethanol-type inducers. Although these mechanisms exist, they do not seem to be important in the induction by "phenobarbital-like" and "3-methylcholanthrene-like" inducers. The fact that induction is produced by a large variety of xenobiotics and is mediated by multiple mechanisms suggests that cytochrome P-450 system can provide increased protection for organisms in potentially hostile chemical environment. Since cytochrome P-450 induction is a characteristic response to chemicals for various living organisms ranging from microorganisms to man, it seems to be an adaptive mechanism for organisms to increase the chance for survival.
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Affiliation(s)
- K Monostory
- Magyar Tudományos Akadémia, Központi Kémiai Kutató Intézet, Budapest
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Blickle T, Lakatos B, Halász S, Molnár I. A method for determination of size-dependent crystal growth kinetics from batch experiments (II). Two-experiment estimation. Cryst Res Technol 1988. [DOI: 10.1002/crat.2170231208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Blickle T, Lakatos B, Halász S, Molnár I. A method for determination of size-dependent crystal growth kinetics from batch experiments (I). One-experiment estimation. Cryst Res Technol 1988. [DOI: 10.1002/crat.2170231207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Lakatos B, Meisel J, Rockenbauer A, Simon P, Korecz L. EPR and Mössbauer spectroscopic studies on metal complexes of pectic acid and their derivatives. Inorganica Chim Acta 1983. [DOI: 10.1016/s0020-1693(00)95314-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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