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122 results on '"Locati, E."'

1. Standardised assessment of evidence supporting the adoption of mobile health solutions: A Clinical Consensus Statement of the ESC Regulatory Affairs Committee

Author

Caiani, E G, primary, Kemps, H, additional, Hoogendoorn, P, additional, Asteggiano, R, additional, Böhm, A, additional, Borregaard, B, additional, Boriani, G, additional, Brunner La Rocca, H P, additional, Casado-Arroyo, R, additional, Castelletti, S, additional, Christodorescu, R, additional, Cowie, M R, additional, Dendale, P, additional, Dunn, F, additional, Fraser, A G, additional, Lane, D A, additional, Locati, E T, additional, Małaczyńska-Rajpold, K, additional, Merșa, C, additional, Neubeck, L, additional, Parati, G, additional, Plummer, C, additional, Rosano, G, additional, Scherrenberg, M, additional, Smirthwaite, A, additional, and Szymanski, P, additional

Published
2024
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2. Alterations of the Sialylation Machinery in Brugada Syndrome

Author

Ghiroldi, A, Ciconte, G, Creo, P, Tarantino, A, Melgari, D, D'Imperio, S, Piccoli, M, Cirillo, F, Micaglio, E, Monasky, M, Frosio, A, Locati, E, Vicedomini, G, Rivolta, I, Pappone, C, Anastasia, L, Ghiroldi, A, Ciconte, G, Creo, P, Tarantino, A, Melgari, D, D'Imperio, S, Piccoli, M, Cirillo, F, Micaglio, E, Monasky, M, Frosio, A, Locati, E, Vicedomini, G, Rivolta, I, Pappone, C, and Anastasia, L

Abstract

Brugada Syndrome (BrS) is an inherited arrhythmogenic disorder with an increased risk of sudden cardiac death. Recent evidence suggests that BrS should be considered as an oligogenic or polygenic condition. Mutations in genes associated with BrS are found in about one-third of patients and they mainly disrupt the cardiac sodium channel NaV1.5, which is considered the main cause of the disease. However, voltage-gated channel’s activity could be impacted by post-translational modifications such as sialylation, but their role in BrS remains unknown. Thus, we analyzed high risk BrS patients (n = 42) and healthy controls (n = 42) to assess an involvement of sialylation in BrS. Significant alterations in gene expression and protein sialylation were detected in Peripheral Blood Mononuclear Cells (PBMCs) from BrS patients. These changes were significantly associated with the phenotypic expression of the disease, as the size of the arrhythmogenic substrate and the duration of epicardial electrical abnormalities. Moreover, protein desialylation caused a reduction in the sodium current in an in vitro NaV1.5-overexpressing model. Dysregulation of the sialylation machinery provides definitive evidence that BrS affects extracardiac tissues, suggesting an underlying cause of the disease. Moreover, detection of these changes at the systemic level and their correlation with the clinical phenotype hint at the existence of a biomarker signature for BrS.

Published
2022

3. Critical appraisal of technologies to assess electrical activity during atrial fibrillation: a position paper from the European Heart Rhythm Association and European Society of Cardiology Working Group on eCardiology in collaboration with the Heart Rhythm Society, Asia Pacific Heart Rhythm Society, Latin American Heart Rhythm Society and Computing in Cardiology

Author

Groot, N. M. S. de, Shah, D., Boyle, P. M., Anter, E., Clifford, G. D., Deisenhofer, I., Deneke, T., Dessel, P. van, Doessel, O., Dilaveris, P., Heinzel, F. R., Kapa, S., Lambiase, P. D., Lumens, J., Platonov, P. G., Ngarmukos, T., Martinez, J. P., Sanchez, A. O., Takahashi, Y., Valdigem, B. P., Veen, A.-J. van der, Vernooy, K., Casado-Arroyo, R., De Potter, T., Dinov, B., Kosiuk, J., Linz, D., Neubeck, L., Svennberg, E., Kim, Y.-H., Wan, E., Lopez-Cabanillas, N., Locati, E. T., Macfarlane, P., and Group, E. S. C. Scientific Document

Subjects
ddc:620, Engineering & allied operations
Abstract

We aim to provide a critical appraisal of basic concepts underlying signal recording and processing technologies applied for (i) atrial fibrillation (AF) mapping to unravel AF mechanisms and/or identifying target sites for AF therapy and (ii) AF detection, to optimize usage of technologies, stimulate research aimed at closing knowledge gaps, and developing ideal AF recording and processing technologies. Recording and processing techniques for assessment of electrical activity during AF essential for diagnosis and guiding ablative therapy including body surface electrocardiograms (ECG) and endo- or epicardial electrograms (EGM) are evaluated. Discussion of (i) differences in uni-, bi-, and multi-polar (omnipolar/Laplacian) recording modes, (ii) impact of recording technologies on EGM morphology, (iii) global or local mapping using various types of EGM involving signal processing techniques including isochronal-, voltage- fractionation-, dipole density-, and rotor mapping, enabling derivation of parameters like atrial rate, entropy, conduction velocity/direction, (iv) value of epicardial and optical mapping, (v) AF detection by cardiac implantable electronic devices containing various detection algorithms applicable to stored EGMs, (vi) contribution of machine learning (ML) to further improvement of signals processing technologies. Recording and processing of EGM (or ECG) are the cornerstones of (body surface) mapping of AF. Currently available AF recording and processing technologies are mainly restricted to specific applications or have technological limitations. Improvements in AF mapping by obtaining highest fidelity source signals (e.g. catheter���electrode combinations) for signal processing (e.g. filtering, digitization, and noise elimination) is of utmost importance. Novel acquisition instruments (multi-polar catheters combined with improved physical modelling and ML techniques) will enable enhanced and automated interpretation of EGM recordings in the near future.

Published
2022
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4. Brugada syndrome genetics is associated with phenotype severity

Author

Ciconte, G, Monasky, M, Santinelli, V, Micaglio, E, Vicedomini, G, Anastasia, L, Negro, G, Borrelli, V, Giannelli, L, Santini, F, de Innocentiis, C, Rondine, R, Locati, E, Bernardini, A, Mazza, B, Mecarocci, V, Ćalović, Ž, Ghiroldi, A, D'Imperio, S, Benedetti, S, Di Resta, C, Rivolta, I, Casari, G, Petretto, E, Pappone, C, Ciconte, Giuseppe, Monasky, Michelle M, Santinelli, Vincenzo, Micaglio, Emanuele, Vicedomini, Gabriele, Anastasia, Luigi, Negro, Gabriele, Borrelli, Valeria, Giannelli, Luigi, Santini, Francesca, de Innocentiis, Carlo, Rondine, Roberto, Locati, Emanuela T, Bernardini, Andrea, Mazza, Beniamino C, Mecarocci, Valerio, Ćalović, Žarko, Ghiroldi, Andrea, D'Imperio, Sara, Benedetti, Sara, Di Resta, Chiara, Rivolta, Ilaria, Casari, Giorgio, Petretto, Enrico, Pappone, Carlo, Ciconte, G, Monasky, M, Santinelli, V, Micaglio, E, Vicedomini, G, Anastasia, L, Negro, G, Borrelli, V, Giannelli, L, Santini, F, de Innocentiis, C, Rondine, R, Locati, E, Bernardini, A, Mazza, B, Mecarocci, V, Ćalović, Ž, Ghiroldi, A, D'Imperio, S, Benedetti, S, Di Resta, C, Rivolta, I, Casari, G, Petretto, E, Pappone, C, Ciconte, Giuseppe, Monasky, Michelle M, Santinelli, Vincenzo, Micaglio, Emanuele, Vicedomini, Gabriele, Anastasia, Luigi, Negro, Gabriele, Borrelli, Valeria, Giannelli, Luigi, Santini, Francesca, de Innocentiis, Carlo, Rondine, Roberto, Locati, Emanuela T, Bernardini, Andrea, Mazza, Beniamino C, Mecarocci, Valerio, Ćalović, Žarko, Ghiroldi, Andrea, D'Imperio, Sara, Benedetti, Sara, Di Resta, Chiara, Rivolta, Ilaria, Casari, Giorgio, Petretto, Enrico, and Pappone, Carlo

Abstract

Aims : Brugada syndrome (BrS) is associated with an increased risk of sudden cardiac death due to ventricular tachycardia/fibrillation (VT/VF) in young, otherwise healthy individuals. Despite SCN5A being the most commonly known mutated gene to date, the genotype-phenotype relationship is poorly understood and remains uncertain. This study aimed to elucidate the genotype-phenotype correlation in BrS. Methods and results: Brugada syndrome probands deemed at high risk of future arrhythmic events underwent genetic testing and phenotype characterization by the means of epicardial arrhythmogenic substrate (AS) mapping, and were divided into two groups according to the presence or absence of SCN5A mutation. Two-hundred probands (160 males, 80%; mean age 42.6 ± 12.2 years) were included in this study. Patients harbouring SCN5A mutations exhibited a spontaneous type 1 pattern and experienced aborted cardiac arrest or spontaneous VT/VF more frequently than the other subjects. SCN5A-positive patients exhibited a larger epicardial AS area, more prolonged electrograms and more frequently observed non-invasive late potentials. The presence of an SCN5A mutation explained >26% of the variation in the epicardial AS area and was the strongest predictor of a large epicardial area. Conclusion : In BrS, the genetic background is the main determinant for the extent of the electrophysiological abnormalities. SCN5A mutation carriers exhibit more pronounced epicardial electrical abnormalities and a more aggressive clinical presentation. These results contribute to the understanding of the genetic determinants of the BrS phenotypic expression and provide possible explanations for the varying degrees of disease expression.

Published
2021

6. Surface Electrocardiogram Recording: Baseline 12-lead and Ambulatory Electrocardiogram Monitoring

Author

Padeletti, M., Bagliani, G., De Ponti, R., Leonelli, F. M., and Locati, E. T.

Subjects
Body surface mapping, Adult, Aged, 80 and over, Male, Ambulatory ECG recording, Vectorcardiography, Signal Processing, Computer-Assisted, Middle Aged, Electrocardiography, Child, Preschool, Standard ECG, Humans, Female, Child
Abstract

The 12-lead standard electrocardiogram (ECG) is a 10 second recording of human myocytes electrical activity. Filters and oversampling are necessary in order to acquire a smooth signal without distortion. ECG recordings may display ongoing arrhythmias, and some leads may be helpful in formulating the diagnosis. Advanced modalities of baseline ECG recording can be used to extract additional information with significant prognostic value. Ambulatory ECG (AECG) recording is a long-term and low-cost external recording obtained with 1 to 12 leads lasting from 24 to 30 days. For patient comfort, longer AECG recordings use fewer leads.

Published
2019

11. Clinical Implications for Patients With Long QT Syndrome Who Experience a Cardiac Event During Infancy

Author

Spazzolini, C, Mullally, J, Schwartz, P, Moss, A, Mcnitt, S, Ouellet, G, Fugate, T, Goldenberg, I, Jons, C, Zareba, W, Robinson, J, Ackerman, M, Benhorin, J, Crotti, L, Kaufman, E, Locati, E, Ming, Q, Napolitano, C, Priori, S, Towbin, J, Vincent, G, Spazzolini C, Mullally J, Schwartz PJ, Moss AJ, McNitt S, Ouellet G, Fugate T, Goldenberg I, Jons C, Zareba W, Robinson JL, Ackerman MJ, Benhorin J, Crotti L, Kaufman ES, Locati EH, Ming Q, Napolitano C, Priori SG, Towbin JA, Vincent GM., Spazzolini, C, Mullally, J, Schwartz, P, Moss, A, Mcnitt, S, Ouellet, G, Fugate, T, Goldenberg, I, Jons, C, Zareba, W, Robinson, J, Ackerman, M, Benhorin, J, Crotti, L, Kaufman, E, Locati, E, Ming, Q, Napolitano, C, Priori, S, Towbin, J, Vincent, G, Spazzolini C, Mullally J, Schwartz PJ, Moss AJ, McNitt S, Ouellet G, Fugate T, Goldenberg I, Jons C, Zareba W, Robinson JL, Ackerman MJ, Benhorin J, Crotti L, Kaufman ES, Locati EH, Ming Q, Napolitano C, Priori SG, Towbin JA, and Vincent GM.

Abstract

Objectives: This study was designed to evaluate the clinical and prognostic aspects of long QT syndrome (LQTS)-related cardiac events that occur in the first year of life (infancy). Background: The clinical implications for patients with long QT syndrome who experience cardiac events in infancy have not been studied previously. Methods: The study population of 3,323 patients with QT interval corrected for heart rate (QTc) ≥450 ms enrolled in the International LQTS Registry involved 20 patients with sudden cardiac death (SCD), 16 patients with aborted cardiac arrest (ACA), 34 patients with syncope, and 3,253 patients who were asymptomatic during the first year of life. Results: The risk factors for a cardiac event among 212 patients who had an electrocardiogram recorded in the first year of life included QTc ≥500 ms, heart rate ≤100 beats/min, and female sex. An ACA before age 1 year was associated with a hazard ratio of 23.4 (p < 0.01) for ACA or SCD during ages 1 to 10 years. During the 10-year follow-up after infancy, beta-blocker therapy was associated with a significant reduction in ACA/SCD only in those with a syncopal episode within 2 years before ACA/SCD but not for those who survived ACA in infancy. Conclusions: Patients with LQTS who experience ACA during the first year of life are at very high risk for subsequent ACA or death during their next 10 years of life, and beta-blockers might not be effective in preventing fatal or near-fatal cardiac events in this small but high-risk subset

Published
2009

13. External prolonged electrocardiogram monitoring in unexplained syncope and palpitations: results of the SYNARR-Flash study.

Author

Locati, E. T., Moya, A., Oliveira, M., Tanner, H., Willems, R., Lunati, M., and Brignole, M.

Subjects
ARRHYTHMIA diagnosis, SYNCOPE diagnosis, AMBULATORY electrocardiography, COMPARATIVE studies, INTERNATIONAL relations, LONGITUDINAL method, RESEARCH methodology, MEDICAL cooperation, MULTIVARIATE analysis, RESEARCH, SURVIVAL analysis (Biometry), EVALUATION research
Abstract

Aims: SYNARR-Flash study (Monitoring of SYNcopes and/or sustained palpitations of suspected ARRhythmic origin) is an international, multicentre, observational, prospective trial designed to evaluate the role of external 4-week electrocardiogram (ECG) monitoring in clinical work-up of unexplained syncope and/or sustained palpitations of suspected arrhythmic origin.Methods and Results: Consecutive patients were enrolled within 1 month after unexplained syncope or palpitations (index event) after being discharged from emergency room or hospitalization without a conclusive diagnosis. A 4-week ECG monitoring was obtained by external high-capacity loop recorder (SpiderFlash-T(®), Sorin) storing patient-activated and auto-triggered tracings. Diagnostic monitorings included (i) conclusive events with reoccurrence of syncope or palpitation with concomitant ECG recording (with/without arrhythmias) and (ii) events with asymptomatic predefined significant arrhythmias (sustained supraventricular or ventricular tachycardia, advanced atrio-ventricular block, sinus bradycardia <30 b.p.m., pauses >6 s). SYNARR-Flash study enrolled 395 patients (57.7% females, 56.9 ± 18.7 years, 28.1% with syncope, and 71.9% with palpitations) from 10 European centres. For syncope, the 4-week diagnostic yield was 24.5%, and predictors of diagnostic events were early start of recording (0-15 vs. >15 days after index event) (OR 6.2, 95% CI 1.3-29.6, P = 0.021) and previous history of supraventricular arrhythmias (OR 3.6, 95% CI 1.4-9.7, P = 0.018). For palpitations, the 4-week diagnostic yield was 71.6% and predictors of diagnostic events were history of recurrent palpitations (P < 0.001) and early start of recording (P = 0.001).Conclusion: The 4-week external ECG monitoring can be considered as first-line tool in the diagnostic work-up of syncope and palpitation. Early recorder use, history of supraventricular arrhythmia, and frequent previous events increased the likelihood of diagnostic events during the 4-week external ECG monitoring. [ABSTRACT FROM AUTHOR]

Published
2016
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14. Poster Session 2

Author

Andersson, T., primary, Magnusson, A., additional, Bryngelsson, I.- L., additional, Frobert, O., additional, Henriksson, K. M., additional, Edvardsson, N., additional, Poci, D., additional, Polovina, M., additional, Potpara, T., additional, Licina, M., additional, Mujovic, N., additional, Kocijancic, A., additional, Simic, D., additional, Ostojic, M. C., additional, Providencia, R. A., additional, Botelho, A., additional, Trigo, J., additional, Nascimento, J., additional, Quintal, N., additional, Mota, P., additional, Leitao-Marques, A. M., additional, Bosch, R. F., additional, Kirch, W., additional, Rosin, L., additional, Willich, S. N., additional, Pittrow, D., additional, Bonnemeier, H., additional, Valenza, M. C., additional, Martin, L., additional, Munoz Casaubon, T., additional, Valenza, G., additional, Botella, M., additional, Serrano, M., additional, Valenza, B., additional, Cabrera, I., additional, Anderson, K., additional, Benzaquen, B. S., additional, Koziolova, N., additional, Nikonova, J., additional, Shilova, Y., additional, Scherr, D., additional, Narayan, S., additional, Wright, M., additional, Krummen, D., additional, Jadidi, A., additional, Jais, P., additional, Haissaguerre, M., additional, Hocini, M., additional, Hunter, R., additional, Liu, Y., additional, Lu, Y., additional, Wang, W., additional, Schilling, R. J., additional, Bernstein, S., additional, Wong, B., additional, Rooke, R., additional, Vasquez, C., additional, Shah, R., additional, Rosenberg, S., additional, Chinitz, L., additional, Morley, G., additional, Bashir Choudhary, M., additional, Holmqvist, F., additional, Carlson, J., additional, Nilsson, H.- J., additional, Platonov, P. G., additional, Jadidi, A. S., additional, Cochet, H., additional, Miyazaki, S., additional, Shah, A. J., additional, Marrouche, N., additional, Calvo, N., additional, Nadal, M., additional, Andreu, D., additional, Tamborero, D., additional, Diaz, F. E., additional, Berruezo, A., additional, Brugada, J., additional, Mont, L., additional, Fichtner, S., additional, Hessling, G., additional, Estner, H. L., additional, Jilek, C., additional, Reents, T., additional, Ammar, S., additional, Wu, J., additional, Deisenhofer, I., additional, Nakanishi, H., additional, Kashiwase, K., additional, Hirata, A., additional, Wada, M., additional, Ueda, Y., additional, Skoda, J., additional, Neuzil, P., additional, Popelova, J., additional, Petru, J., additional, Sediva, L., additional, Reddy, V. Y., additional, Uldry, L., additional, Forclaz, A., additional, Virag, N., additional, Vesin, J.- M., additional, Kappenberger, L., additional, Sehra, R., additional, Briggs, C., additional, Rappel, W.- J., additional, Janotka, M., additional, Chovanec, M., additional, Yamashiro, K., additional, Takami, K., additional, Sakamoto, Y., additional, Satoh, K., additional, Suzuki, T., additional, Nakagawa, H., additional, Romanov, A., additional, Pokushalov, E., additional, Artemenko, S., additional, Shabanov, V., additional, Stenin, I., additional, Elesin, D., additional, Turov, A., additional, Yakubov, A., additional, Hioki, M., additional, Matsuo, S., additional, Ito, K., additional, Narui, R., additional, Yamashita, S., additional, Sugimoto, K., additional, Yoshimura, M., additional, Yamane, T., additional, Di Biase, L., additional, Gallinghouse, J. D., additional, Rajappan, K., additional, Kautzner, J., additional, Dello Russo, A., additional, Tondo, C., additional, Lorgat, F., additional, Natale, A., additional, Balta, O., additional, Buenz, K., additional, Paessler, M., additional, Anders, H., additional, Horlitz, M., additional, Deneke, T., additional, Lickfett, L., additional, Liberman, I., additional, Linhart, M., additional, Andrie, R., additional, Mittmann-Braun, E., additional, Stockigt, F., additional, Nickenig, G., additional, Schrickel, J., additional, Tilz, R., additional, Rillig, A., additional, Feige, B., additional, Metzner, A., additional, Fuernkranz, A., additional, Burchard, A., additional, Wissner, E., additional, Ouyang, F., additional, Betts, T. R., additional, Jones, M. A., additional, Wong, K. C. K., additional, Qureshi, N., additional, Bashir, Y., additional, Corbucci, G., additional, Losik, D., additional, Selina, V., additional, Crandall, M. A., additional, Daniels, C., additional, Daoud, E., additional, Kalbfleisch, S., additional, Yamaji, H., additional, Murakami, T., additional, Kawamura, H., additional, Murakami, M., additional, Hina, K., additional, Kusachi, S., additional, Dakos, G., additional, Vassilikos, V., additional, Paraskevaidis, S., additional, Mantziari, A., additional, Theophylogiannakos, S., additional, Chouvarda, I., additional, Chatzizisis, I., additional, Styliadis, I., additional, Kimura, T., additional, Fukumoto, K., additional, Nishiyama, N., additional, Aizawa, Y., additional, Fukuda, Y., additional, Sato, T., additional, Miyoshi, S., additional, Takatsuki, S., additional, Navarrete Casas, A. J., additional, Ali, I., additional, Conte, F. C., additional, Moran, M., additional, Graham, B. G., additional, Kalejs, O., additional, Lacis, R., additional, Stradins, P., additional, Koris, A., additional, Putnins, I., additional, Vikmane, M., additional, Lejnieks, A., additional, Erglis, A., additional, Estrada, A., additional, Perez Silva, A., additional, Castrejon, S., additional, Doiny, D., additional, Merino, J. L., additional, Baranchuk, A., additional, Greiss, I., additional, Simpson, C. S., additional, Abdollah, H., additional, Redfearn, D. P., additional, Buys-Topart, M., additional, Nitzsche, R., additional, Thibault, B., additional, Kathan, S., additional, Kolb, C., additional, Reif, S., additional, Schade, S., additional, Taggeselle, J., additional, Frey, A., additional, Birkenhagen, A., additional, Kohler, S., additional, Schmidt, M., additional, Cano Perez, O., additional, Buendia, F., additional, Igual, B., additional, Osca, J. M., additional, Sanchez, J. M., additional, Sancho-Tello, M. J., additional, Olague, J. M., additional, Salvador, A., additional, Tolosana, J. M., additional, Fernandez-Armenta, J., additional, Matas, M., additional, Barbarin, M. C., additional, Habibovic, M., additional, Van Den Broek, K. C., additional, Theuns, D. A. M. J., additional, Jordaens, L., additional, Alings, M., additional, Van Der Voort, P. H., additional, Pedersen, S. S., additional, Pupita, G., additional, Molini, S., additional, Brambatti, M., additional, Capucci, A., additional, Molodykh, S., additional, Idov, E. M., additional, Belyaev, O. V., additional, Segreti, L., additional, Soldati, E., additional, Zucchelli, G., additional, Di Cori, A., additional, Viani, S., additional, Paperini, L., additional, De Lucia, R., additional, Bongiorni, M. G., additional, Binner, L., additional, Taborsky, M., additional, Bello, D., additional, Heuer, H., additional, Ramza, B., additional, Jenniskens, I., additional, Johnson, W. B., additional, Silvetti, M. S., additional, Rava', L., additional, Russo, M. S., additional, Di Mambro, C., additional, Ammirati, A., additional, Gimigliano, G., additional, Prosperi, M., additional, Drago, F., additional, Santos, A. R., additional, Picarra, B., additional, Semedo, P., additional, Dionisio, P., additional, Matos, R., additional, Leitao, M., additional, Jacinto, A., additional, Trinca, M., additional, Mazzone, P., additional, Ciconte, G., additional, Marzi, A., additional, Paglino, G., additional, Vergara, P., additional, Sora, N., additional, Gulletta, S., additional, Della Bella, P., additional, Koppitz, P., additional, Fach, A., additional, Hobbiesiefken, S., additional, Fiehn, E., additional, Hambrecht, R., additional, Sperzel, J., additional, Jung, M., additional, Schmitt, J., additional, Pajitnev, D., additional, Burger, H., additional, Goebel, G., additional, Ehrlich, W., additional, Walther, T., additional, Ziegelhoeffer, T., additional, Vancura, V., additional, Wichterle, D., additional, Melenovsky, V., additional, Glikson, M., additional, Goldenberg, G., additional, Segev, A., additional, Dvir, D., additional, Kuzniec, J., additional, Finkelstein, A., additional, Hay, I., additional, Guetta, V., additional, Choo, W. K., additional, Gupta, S., additional, Kirkfeldt, R., additional, Johansen, J., additional, Nohr, E., additional, Moller, M., additional, Arnsbo, P., additional, Nielsen, J., additional, Banha, M., additional, Stojanov, P., additional, Raspopovic, S., additional, Vasic, D., additional, Savic, D., additional, Nikcevic, G., additional, Jovanovic, V., additional, Defaye, P., additional, Mondesert, B., additional, Mbaye, A., additional, Cassagneau, R., additional, Gagniere, V., additional, Jacon, J., additional, Sanfins, V., additional, Reis, H. R., additional, Nobre, J. N., additional, Martins, V. M., additional, Duarte, L. D., additional, Morais, C. M., additional, Conceicao, J. C., additional, Hero, M., additional, Rey, J. L., additional, Ducharme, A., additional, Simpson, C., additional, Stuglin, C., additional, Blier, L., additional, Senaratne, M., additional, Khaykin, Y., additional, Pinter, A., additional, Mlynarska, A., additional, Mlynarski, R., additional, Sosnowski, M., additional, Wilczek, J., additional, Iorgulescu, C., additional, Bogdan, S., additional, Constantinescu, D., additional, Caldararu, C., additional, Dorobantu, M., additional, Radu, A., additional, Vatasescu, R.- G., additional, Yusu, S., additional, Ikeda, T., additional, Mera, H., additional, Miwa, Y., additional, Abe, A., additional, Miyakoshi, M., additional, Tsukada, T., additional, Yoshino, H., additional, Nayar, V., additional, Cantelon, P., additional, Rawling, A., additional, Belham, M. R. D., additional, Pugh, P. J., additional, Osca Asensi, J., additional, Cano, O., additional, Tejada, D., additional, Munoz, B., additional, Rodriguez, M., additional, Olague, J., additional, Wecke, L., additional, Van Hunnik, A., additional, Thompson, T., additional, Di Carlo, L., additional, Zdeblick, M., additional, Auricchio, A., additional, Prinzen, F., additional, Doltra Magarolas, A., additional, Bijnens, B., additional, Silva, E., additional, Penela, D., additional, Sitges, M., additional, Ofman, P., additional, Navaravong, L., additional, Leng, J., additional, Peralta, A., additional, Hoffmeister, P., additional, Levine, R., additional, Cook, J., additional, Stoenescu, M., additional, Tettamanti, M. E., additional, Revilla Orodea, A., additional, Lopez Diaz, J., additional, De La Fuente Galan, L., additional, Arnold, R., additional, Garcia Moran, E., additional, San Roman Calvar, J. A., additional, Gomez Salvador, I., additional, Nakamura, K., additional, Takami, M., additional, Keida, T., additional, Mesato, A., additional, Higa, S., additional, Shimabukuro, M., additional, Masuzaki, H., additional, Proietti, R., additional, Sagone, A., additional, Domenichini, G., additional, Burri, H., additional, Valzania, C., additional, Biffi, M., additional, Sunthorn, H., additional, Gavaruzzi, G., additional, Foulkes, H., additional, Boriani, G., additional, Koh, S., additional, Hou, W., additional, Snell, J., additional, Poore, J., additional, Dalal, N., additional, Bornzin, G., additional, Kloppe, A., additional, Mijic, D., additional, Bogossian, H., additional, Ninios, I., additional, Zarse, M., additional, Lemke, B., additional, Guedon-Moreau, L., additional, Kouakam, C., additional, Klug, D., additional, Marquie, C., additional, Ziglio, F., additional, Kacet, S., additional, Mohamed Fereig Hamed, H., additional, Hamdy, A. M. A. L., additional, Abd El Aziz, A. H. M. E. D., additional, Nabih, M. R. V. A. T., additional, Hamdy, R. E. H. A. B., additional, Yaminisaharif, A., additional, Davoudi, G. H., additional, Kasemisaeid, A., additional, Sadeghian, S., additional, Vasheghani Farahani, A., additional, Yazdanifard, P., additional, Shafiee, A., additional, Alonso, C., additional, Grimard, C., additional, Jauvert, G., additional, Lazarus, A., additional, Mont, L. L., additional, Ortiz-Perez, J., additional, Caralt, T., additional, Escudero, J., additional, Perez, F., additional, Griffith, K. M., additional, Ferreyra, R., additional, Urena, P., additional, Demas, M., additional, Muratore, C., additional, Mazzetti, H., additional, Guardado, J., additional, Fernandes, M., additional, Pereira, V. 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Published
2011
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35. Gene-specific differences in the circadian variation of ventricular repolarization in the long QT syndrome: a key to sudden death during sleep?

Author

Stramba-Badiale, M., Priori, S. G., Napolitano, C., Locati, E. H., Vinolas, X., Haverkamp, W., Schulze-Bahr, E., Goulene, K., and Peter J. Schwartz

Subjects
Adult, Male, Adolescent, Genotype, Heart Ventricles, Infant, Middle Aged, Sodium Channels, Circadian Rhythm, Long QT Syndrome, Death, Sudden, Cardiac, Risk Factors, Child, Preschool, Electrocardiography, Ambulatory, Humans, Female, Child, Sleep
Abstract

In the long QT syndrome (LQTS) most life-threatening cardiac events occur in association with physical or emotional stress. However, a minority of patients dies suddenly during sleep; intriguingly, these sleep-related sudden deaths tend to cluster in families. The mechanism(s) underlying this phenomenon and the reason why it occurs in few selected families are unknown. Recently, some of the LQTS genes have been identified leading to three main subgroups (LQT1, LQT2, LQT3) associated respectively with mutations affecting the following ionic currents involved in the control of ventricular repolarization: I(Ks), I(Kr), I(Na). We have recently observed that cardiac events nighttime are rare in LQT1 and frequent in LQT3 patients.We studied 26 LQTS patients all genotyped (11 LQT1, 9 LQT2, 6 LQT3) and 26 healthy controls matched by age and gender. Using a specific software, 24-hour ambulatory ECG recordings were performed and the QT interval was measured in order to allow comparison between QTc nighttime and daytime.The main finding is that while LQT1 patients show a trend for modest QTc shortening and LQT2 patients a trend for modest lengthening nighttime versus daytime, LQT3 patients show clear lengthening of the QTc nighttime. These changes are not explained by heart rate changes or by the use of beta-blockers.The marked tendency for further QT prolongation nighttime, which clearly increases arrhythmic risk, present among LQT3 patients and absent among LQT1 patients, provides an explanation for the gene-specific higher risk for sudden death during sleep for LQT3 compared to LQT1 patients.

50. Etnografia e cinema

Author

Jean Rouch and Annalisa Locati e Sandro Spini

Subjects
Cultural Studies, Anthropology
Published
1981

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