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Sredniawa B, Mitrega K, Stokwiszewski J, Sokal A, Boidol J, Wierucki L, Zieleniewicz P, Rajca A, Bandosz P, Zdrojewski T, Opolski G, Kazmierczak J, Grodzicki T, Lip G, Kalarus Z. Screening for atrial fibrillation in subjects aged 65 using a long-term continuous ECG telemonitoring vest: the NOninvasive Monitoring for early detection of atrial fibrillation (NOMED-AF) study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0503] [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
Atrial fibrillation (AF) confers a high healthcare burden from stroke, heart failure, dementia and hospitalisation, and one challenge is. Early detection of this arrhythmia in the community, given that it is often asymptomatic.
Aim
To perform population screening for atrial fibrillation and flutter (AF/AFl) using a mobile long-term continuous ECG telemonitoring vest in a representative Polish and European population aged ≥65 years (age range 65–100 years).
Methods
The NOMED-AF study is a cross-sectional study based on a representative sample of adults aged ≥65 years (n=3014; mean age 77.5±7.9 years; 49.1% female). All study participants were equipped with a mobile long-term continuous ECG telemonitoring vest. National and European estimations were calculated on weighted data.
Results
In 680 subjects AF/AFl (including 279 with SAF; 9.3%) was confirmed. In the NOMED-AF population, the prevalence of AF/AFl was 22.6%, estimated to be 19.2% for Poland [1,251,100 (95% CI: 1,158,300–1,344,000) and 480,100 (95% CI: 426,60–533,700) subjects with AF/AFl and SAF, respectively] and 20.4% for Europe [20,300,000 (95% CI 18.8–21.9 M), including 8,000,000 (95% CI: 6.9–9.3 M) subjects with AF/AFl and SAF, respectively]. The prevalence of AF/AFl was 2.56-fold higher in men than in women and the incidence of silent AF (SAF) was 4.73-fold higher in men than in women. Although the risk of either AF/AFl or SAF increased with age, the odds ratio was significantly higher in women of a particular age group than in men of the corresponding age. Based on our survey, the total number of subjects with AF/AFl in Europe is estimated to be roughly 20.3 million (95% CI 18.8–21.9M), including 8.0 million (95% CI: 6.9–9.3M) subjects with silent AF/AFl (Figure).
Conclusions
Approximately 1 in 5 subjects aged ≥65 years suffers from AF/AFl. The risk for AF/AFl and SAF is higher in men than that in women, but when correlated to a particular age group, the risk increases significantly in women. Continuous ECG telemonitoring allows for more credible AF/AFl and SAF detection.
Funding Acknowledgement
Type of funding source: Public Institution(s). Main funding source(s): The research has received funding from the National Centre for Research and Development under grant agreement (STRATEGMED2/269343/18/NCBR/2016
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Affiliation(s)
- B Sredniawa
- DMS in Zabrze, Medical University of Silesia, Department of Cardiology, Katowice, Poland
| | - K Mitrega
- Silesian Center of Heart Diseases, Department of Cardiology, Zabrze, Poland
| | - J Stokwiszewski
- National Institute of Public Health – National Institute of Hygiene, Warsaw, Poland
| | - A Sokal
- Silesian Center of Heart Diseases, Department of Cardiology, Zabrze, Poland
| | - J Boidol
- Silesian Center of Heart Diseases, Department of Cardiology, Zabrze, Poland
| | - L Wierucki
- Medical University of Gdansk, Department of Preventive Medicine and Education, Gdansk, Poland
| | - P Zieleniewicz
- Medical University of Gdansk, Department of Preventive Medicine and Education, Gdansk, Poland
| | - A Rajca
- Medical University of Gdansk, Department of Preventive Medicine and Education, Gdansk, Poland
| | - P Bandosz
- Medical University of Gdansk, Department of Preventive Medicine and Education, Gdansk, Poland
| | - T Zdrojewski
- Medical University of Gdansk, Department of Preventive Medicine and Education, Gdansk, Poland
| | - G Opolski
- Medical University of Warsaw, First Chair and Department of Cardiology, Warsaw, Poland
| | - J Kazmierczak
- Pomeranian Medical University, Department of Cardiology, Szczecin, Poland
| | - T Grodzicki
- Jagiellonian University Medical College, Department of Internal Medicine and Gerontology, Krakow, Poland
| | - G.Y.H Lip
- University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool Centre for Cardiovascular Science, Liverpool, United Kingdom
| | - Z Kalarus
- DMS in Zabrze, Medical University of Silesia, Department of Cardiology, Katowice, Poland
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Ciccullo F, Gallagher NM, Geladari O, Chassé T, Rajca A, Casu MB. A Derivative of the Blatter Radical as a Potential Metal-Free Magnet for Stable Thin Films and Interfaces. ACS Appl Mater Interfaces 2016; 8:1805-1812. [PMID: 26727145 DOI: 10.1021/acsami.5b09693] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Organic radicals are fascinating materials because of their unique properties, which make them suitable for a variety of applications. Their synthesis may be challenging, and big efforts have focused on chemical stability. However, introducing a new material in electronics not only requires chemically stable molecules but also stable monolayers and thin films in view of their use in devices. In this work, we have investigated the thin films of a derivative of the Blatter radical that was synthesized bearing in mind the thermodynamic factors that govern thin film stability. We have proved our concept by investigating the electronic structure, the paramagnetic character, and stability of the obtained films under UHV and ambient conditions by in situ X-ray photoelectron spectroscopy, ex situ atomic force microscopy, and electron paramagnetic resonance spectroscopy.
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Affiliation(s)
- F Ciccullo
- Institute of Physical and Theoretical Chemistry, University of Tübingen , Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - N M Gallagher
- Department of Chemistry, University of Nebraska , Lincoln, Nebraska 68588-0304, United States
| | - O Geladari
- Institute of Physical and Theoretical Chemistry, University of Tübingen , Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - T Chassé
- Institute of Physical and Theoretical Chemistry, University of Tübingen , Auf der Morgenstelle 18, D-72076 Tübingen, Germany
| | - A Rajca
- Department of Chemistry, University of Nebraska , Lincoln, Nebraska 68588-0304, United States
| | - M B Casu
- Institute of Physical and Theoretical Chemistry, University of Tübingen , Auf der Morgenstelle 18, D-72076 Tübingen, Germany
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Tzanavaros I, Bergfeld I, Rajca A, Herwig V, Heyde A, Finkbeiner Y, Manus H, Knörig J. Long-term results of radiofrequency ablation used for the surgical treatment of atrial fibrillation associated with rheumatic mitral valve disease. Thorac Cardiovasc Surg 2009. [DOI: 10.1055/s-0029-1191713] [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: 10/21/2022]
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Abstract
We describe preparation and magnetic properties of an organic pi-conjugated polymer with very large magnetic moment and magnetic order at low temperatures. The polymer is designed with a large density of cross-links and alternating connectivity of radical modules with unequal spin quantum numbers (S), macrocyclic S = 2 and, cross-linking S = (1/2) modules, which permits large net S values for either ferromagnetic or antiferromagnetic exchange couplings between the modules. In the highly cross-linked polymer, an effective magnetic moment corresponding to an average S of about 5000 and slow reorientation of the magnetization by a small magnetic field (less than or equal to 1 oersted) below a temperature of about 10 kelvin are found. Qualitatively, this magnetic behavior is comparable to that of insulating spin glasses and blocked superparamagnets.
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Affiliation(s)
- A Rajca
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588-0304, USA.
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Sochanik A, Kaida I, Mitrus I, Rajca A, Szala S. A new cholesterol derivative suitable for transfecting certain type of cells in the presence of 10% serum. Cancer Gene Ther 2000; 7:513-20. [PMID: 10811467 DOI: 10.1038/sj.cgt.7700167] [Citation(s) in RCA: 17] [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: 11/09/2022]
Abstract
We developed a new cationic lipid suitable for use as a DNA carrier in the presence of 10% sera. The novel compound (abbreviated as Arg-Chol) contains cholesterol and a dipeptide consisting of glycine and sterically protected arginine. The efficiency of reporter gene transfection using liposomes based on this new reagent was compared with that of liposomes made with other cationic derivatives of cholesterol. Lipoplexes formulated with the newly synthesized lipid mediate in vitro transfection of B16(F10) murine melanoma cells in the presence of 10% sera more efficiently than in other cell lines and compared with other cholesterol derivatives studied.
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Affiliation(s)
- A Sochanik
- Department of Molecular Biology, Center of Oncology-Maria Skłodowska-Curie Memorial Institute, Gliwice, Poland
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Lee BH, Bertram B, Rajca A, Frank N, Schmezer P, Wiessler M. Inhibitory effects of mixed disulfides from disulfiram on the metabolism and genotoxicity of N-nitrosodiethylamine. Arzneimittelforschung 1995; 45:1024-8. [PMID: 7488305] [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: 01/25/2023]
Abstract
Disulfiram (CAS 97-77-8, DSF), a potent anticarcinogenic compound, is known to form mixed disulfides with sulfhydryl group containing amino acids or proteins in vivo. In the present study the stabilities of two mixed disulfides which may arise in the metabolism of disulfiram, i.e. S-(N,N-diethyldithiocarbamoyl)-N-acetyl-L-cysteine (AC-DDTC) and S-(N,N-diethyldithiocarbamoyl)-L-glutathione (GS-DDTC) in phosphate buffer (pH 7.2) and in rat liver subcellular fractions were investigated as well as their influences on the glutathione (GSH)-related detoxifying system, on the metabolism of [14C] N-nitrosodiethylamine (NDEA) and on the genotoxic activity of NDEA in rats. Both substances were stable in buffer and in microsomes but were degraded in cytosol showing a half life of 4.7 h (AC-DDTC) and 3.2 h (GS-DDTC). Addition of GSH to the incubation media accelerated the degradation of mixed disulfides in cytosol. In vivo administration of AC-DDTC and GS-DDTC (1.7 mmol/kg i.p.) led to an increase in hepatic GSH content and to an inhibition of the activity of NDEA deethylase. Both mixed disulfides inhibited the metabolism of NDEA. After a 28 mg/kg i.p. dose of [14C] NDEA only 0.4% was excreted unchanged in the urine. Pretreatment with AC-DDTC and GS-DDTC caused a 10 to 20 fold increase in the amount of NDEA excreted in the urine. The occurrence of DNA single strand breaks in rat liver cells induced by NDEA was completely neutralized by the pretreatment with AC-DDTC.
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Affiliation(s)
- B H Lee
- Division of Molecular Toxicology, German Cancer Research Center, Heidelberg
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Rajca A, Bertram B, Eisenbarth J, Wiessler M. New mixed disulfides of L-cysteine derivatives and of glutathione with diethyldithiocarbamic acid and 2-mercaptoethanesulfonic acid. Arzneimittelforschung 1990; 40:282-6. [PMID: 2161235] [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: 12/30/2022]
Abstract
It is generally assumed that thiol anticarcinogens like disulfiram (DSF) or sodium 2-mercaptoethane-sulfonate (mesna) after in vivo administration react rapidly with serum protein sulfhydryl groups forming mixed disulfides. Different methods have been established for the synthesis of mixed disulfides between cysteine or glutathione and diethyldithiocarbamate (DDTC) or mesna in order to elucidate their chemical and biological effects. A short summary is given of pilot biochemical experiments carried out with two mixed disulfides.
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Affiliation(s)
- A Rajca
- Institute of Organic Chemistry and Technology, Silesian Technical University, Gliwice, Poland
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