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2. Are disease-specific patient-reported outcomes measures (PROMs) used in cardiogenetics?: A systematic review

Author

van Pottelberghe, S., Kupper, H.M., Scheirlynck, J., Amin, A.S., Wilde, A.A.M., Hofman, N., Callus, E., Biller, R., Nekkebroeck, J., van Dooren, S., Hes, F.J., van der Crabben, S.N.C., van Pottelberghe, S., Kupper, H.M., Scheirlynck, J., Amin, A.S., Wilde, A.A.M., Hofman, N., Callus, E., Biller, R., Nekkebroeck, J., van Dooren, S., Hes, F.J., and van der Crabben, S.N.C.

Abstract

Patient-reported outcome measures (PROMs) are used to facilitate patient-centered care (PCC). While studies in patients with cardiac conditions have revealed poorer health-related quality of life (HRQoL) and elevated emotional stress, studies in inherited cardiac conditions (ICC) seem rare. A systematic review evaluated which (specific domains of) PROMs are used in patients with ICC. From three databases (PubMed, PsychINFO, and Web of Science) quantitative studies investigating PROMs in patients with ICC were included. A Cochrane-based assessment tool was used to evaluate quality and potential risk of bias per subdomain. Data from 17 eligible articles were extracted. Among the included studies, risk of bias was predominantly high (35%) or unclear (30%). Most (n = 14) studies used a generic health status measure (SF-36, SF-12); 3 studies used a disease-specific PROM (KCCQ- cardiomyopathy and MLFHQ-heart failure). In addition to HRQoL measures, several studies used affective psychological measures (i.e., HADS, CAQ-18, IES-R, and IPQ). The mental health component of the PROMs showed lower scores overall in patients with ICC compared to population norms. Nine studies using HADS and GAD-7/PHQ-9 showed a prevalence of clinically significant anxiety (17–47%) and depression levels (8.3–28%) that were higher than the population norm (8.3% and 6.3%, respectively). HRQoL in patients with ICC is primarily assessed with generic PROMs. Results further confirmed high psychological morbidity in this population. Generic PROMS measures evaluate overall health status, but lack sensitivity to ICC-specific factors like heredity-related concerns. We propose developing a PROM specific for ICC to optimize PCC.

Published
2023

6. Transethnic genome-wide association study provides insights in the genetic architecture and heritability of long QT syndrome

Author

Lahrouchi, N, Tadros, R, Crotti, L, Mizusawa, Y, Postema, P, Beekman, L, Walsh, R, Hasegawa, K, Barc, J, Ernsting, M, Turkowski, K, Mazzanti, A, Beckmann, B, Shimamoto, K, Diamant, U, Wijeyeratne, Y, Kucho, Y, Robyns, T, Ishikawa, T, Arbelo, E, Christiansen, M, Winbo, A, Jabbari, R, Lubitz, S, Steinfurt, J, Rudic, B, Loeys, B, Shoemaker, M, Weeke, P, Pfeiffer, R, Davies, B, Andorin, A, Hofman, N, Dagradi, F, Pedrazzini, M, Tester, D, Bos, J, Sarquella-Brugada, G, Campuzano, Ó, Platonov, P, Stallmeyer, B, Zumhagen, S, Nannenberg, E, Veldink, J, van den Berg, L, Al-Chalabi, A, Shaw, C, Shaw, P, Morrison, K, Andersen, P, Müller-Nurasyid, M, Cusi, D, Barlassina, C, Galan, P, Lathrop, M, Munter, M, Werge, T, Ribasés, M, Aung, T, Khor, C, Ozaki, M, Lichtner, P, Meitinger, T, van Tintelen, J, Hoedemaekers, Y, Denjoy, I, Leenhardt, A, Napolitano, C, Shimizu, W, Schott, J, Gourraud, J, Makiyama, T, Ohno, S, Itoh, H, Krahn, A, Antzelevitch, C, Roden, D, Saenen, J, Borggrefe, M, Odening, K, Ellinor, P, Tfelt-Hansen, J, Skinner, J, van den Berg, M, Olesen, M, Brugada, J, Brugada, R, Makita, N, Breckpot, J, Yoshinaga, M, Behr, E, Rydberg, A, Aiba, T, Kääb, S, Priori, S, Guicheney, P, Tan, H, Newton-Cheh, C, Ackerman, M, Schwartz, P, Schulze-Bahr, E, Probst, V, Horie, M, Wilde, A, Tanck, M, Bezzina, C, Lahrouchi N, Tadros R, Crotti L, Mizusawa Y, Postema PG, Beekman L, Walsh R, Hasegawa K, Barc J, Ernsting M, Turkowski KL, Mazzanti A, Beckmann BM, Shimamoto K, Diamant UB, Wijeyeratne YD, Kucho Y, Robyns T, Ishikawa T, Arbelo E, Christiansen M, Winbo A, Jabbari R, Lubitz SA, Steinfurt J, Rudic B, Loeys B, Shoemaker MB, Weeke PE, Pfeiffer R, Davies B, Andorin A, Hofman N, Dagradi F, Pedrazzini M, Tester DJ, Bos JM, Sarquella-Brugada G, Campuzano Ó, Platonov PG, Stallmeyer B, Zumhagen S, Nannenberg EA, Veldink JH, van den Berg LH, Al-Chalabi A, Shaw CE, Shaw PJ, Morrison KE, Andersen PM, Müller-Nurasyid M, Cusi D, Barlassina C, Galan P, Lathrop M, Munter M, Werge T, Ribasés M, Aung T, Khor CC, Ozaki M, Lichtner P, Meitinger T, van Tintelen JP, Hoedemaekers Y, Denjoy I, Leenhardt A, Napolitano C, Shimizu W, Schott JJ, Gourraud JB, Makiyama T, Ohno S, Itoh H, Krahn AD, Antzelevitch C, Roden DM, Saenen J, Borggrefe M, Odening KE, Ellinor PT, Tfelt-Hansen J, Skinner JR, van den Berg MP, Olesen MS, Brugada J, Brugada R, Makita N, Breckpot J, Yoshinaga M, Behr ER, Rydberg A, Aiba T, Kääb S, Priori SG, Guicheney P, Tan HL, Newton-Cheh C, Ackerman MJ, Schwartz PJ, Schulze-Bahr E, Probst V, Horie M, Wilde AA, Tanck MWT, Bezzina CR., Lahrouchi, N, Tadros, R, Crotti, L, Mizusawa, Y, Postema, P, Beekman, L, Walsh, R, Hasegawa, K, Barc, J, Ernsting, M, Turkowski, K, Mazzanti, A, Beckmann, B, Shimamoto, K, Diamant, U, Wijeyeratne, Y, Kucho, Y, Robyns, T, Ishikawa, T, Arbelo, E, Christiansen, M, Winbo, A, Jabbari, R, Lubitz, S, Steinfurt, J, Rudic, B, Loeys, B, Shoemaker, M, Weeke, P, Pfeiffer, R, Davies, B, Andorin, A, Hofman, N, Dagradi, F, Pedrazzini, M, Tester, D, Bos, J, Sarquella-Brugada, G, Campuzano, Ó, Platonov, P, Stallmeyer, B, Zumhagen, S, Nannenberg, E, Veldink, J, van den Berg, L, Al-Chalabi, A, Shaw, C, Shaw, P, Morrison, K, Andersen, P, Müller-Nurasyid, M, Cusi, D, Barlassina, C, Galan, P, Lathrop, M, Munter, M, Werge, T, Ribasés, M, Aung, T, Khor, C, Ozaki, M, Lichtner, P, Meitinger, T, van Tintelen, J, Hoedemaekers, Y, Denjoy, I, Leenhardt, A, Napolitano, C, Shimizu, W, Schott, J, Gourraud, J, Makiyama, T, Ohno, S, Itoh, H, Krahn, A, Antzelevitch, C, Roden, D, Saenen, J, Borggrefe, M, Odening, K, Ellinor, P, Tfelt-Hansen, J, Skinner, J, van den Berg, M, Olesen, M, Brugada, J, Brugada, R, Makita, N, Breckpot, J, Yoshinaga, M, Behr, E, Rydberg, A, Aiba, T, Kääb, S, Priori, S, Guicheney, P, Tan, H, Newton-Cheh, C, Ackerman, M, Schwartz, P, Schulze-Bahr, E, Probst, V, Horie, M, Wilde, A, Tanck, M, Bezzina, C, Lahrouchi N, Tadros R, Crotti L, Mizusawa Y, Postema PG, Beekman L, Walsh R, Hasegawa K, Barc J, Ernsting M, Turkowski KL, Mazzanti A, Beckmann BM, Shimamoto K, Diamant UB, Wijeyeratne YD, Kucho Y, Robyns T, Ishikawa T, Arbelo E, Christiansen M, Winbo A, Jabbari R, Lubitz SA, Steinfurt J, Rudic B, Loeys B, Shoemaker MB, Weeke PE, Pfeiffer R, Davies B, Andorin A, Hofman N, Dagradi F, Pedrazzini M, Tester DJ, Bos JM, Sarquella-Brugada G, Campuzano Ó, Platonov PG, Stallmeyer B, Zumhagen S, Nannenberg EA, Veldink JH, van den Berg LH, Al-Chalabi A, Shaw CE, Shaw PJ, Morrison KE, Andersen PM, Müller-Nurasyid M, Cusi D, Barlassina C, Galan P, Lathrop M, Munter M, Werge T, Ribasés M, Aung T, Khor CC, Ozaki M, Lichtner P, Meitinger T, van Tintelen JP, Hoedemaekers Y, Denjoy I, Leenhardt A, Napolitano C, Shimizu W, Schott JJ, Gourraud JB, Makiyama T, Ohno S, Itoh H, Krahn AD, Antzelevitch C, Roden DM, Saenen J, Borggrefe M, Odening KE, Ellinor PT, Tfelt-Hansen J, Skinner JR, van den Berg MP, Olesen MS, Brugada J, Brugada R, Makita N, Breckpot J, Yoshinaga M, Behr ER, Rydberg A, Aiba T, Kääb S, Priori SG, Guicheney P, Tan HL, Newton-Cheh C, Ackerman MJ, Schwartz PJ, Schulze-Bahr E, Probst V, Horie M, Wilde AA, Tanck MWT, and Bezzina CR.

Abstract

Background: Long QT syndrome (LQTS) is a rare genetic disorder and a major preventable cause of sudden cardiac death in the young. A causal rare genetic variant with large effect size is identified in up to 80% of probands (genotype positive) and cascade family screening shows incomplete penetrance of genetic variants. Furthermore, a proportion of cases meeting diagnostic criteria for LQTS remain genetically elusive despite genetic testing of established genes (genotype negative). These observations raise the possibility that common genetic variants with small effect size contribute to the clinical picture of LQTS. This study aimed to characterize and quantify the contribution of common genetic variation to LQTS disease susceptibility. Methods: We conducted genome-wide association studies followed by transethnic meta-analysis in 1656 unrelated patients with LQTS of European or Japanese ancestry and 9890 controls to identify susceptibility single nucleotide polymorphisms. We estimated the common variant heritability of LQTS and tested the genetic correlation between LQTS susceptibility and other cardiac traits. Furthermore, we tested the aggregate effect of the 68 single nucleotide polymorphisms previously associated with the QT-interval in the general population using a polygenic risk score. Results: Genome-wide association analysis identified 3 loci associated with LQTS at genome-wide statistical significance (P5×10-8) near NOS1AP, KCNQ1, and KLF12, and 1 missense variant in KCNE1(p.Asp85Asn) at the suggestive threshold (P10-6). Heritability analyses showed that ≈15% of variance in overall LQTS susceptibility was attributable to common genetic variation (h2SNP 0.148; standard error 0.019). LQTS susceptibility showed a strong genome-wide genetic correlation with the QT-interval in the general population (rg=0.40; P=3.2×10-3). The polygenic risk score comprising common variants previously associated with the QT-interval in the general population was greater in LQTS c

Published
2020

7. Investigation on Sudden Unexpected Death in the Young (SUDY) in Europe: results of the European Heart Rhythm Association Survey

Author

R Behr, E, Scrocco, C, M Wilde, A, Marijon, E, Crotti, L, E Iliodromitis, K, A Remme, C, Kosiuk, J, Rudaka, I, Sarquella Brugada, G, Frampton, K, Schulze-Bahr, E, Jubele, K, de Asmundis, C, Hofman, N, Tfelt-Hansen, J, Boveda, S, Conte, G, Elijah R Behr, Chiara Scrocco, Arthur A M Wilde, Eloi Marijon, Lia Crotti, Konstantinos E Iliodromitis, Carol A Remme, Jedrzej Kosiuk, Irina Rudaka, Georgia Sarquella Brugada, Katie Frampton, Eric Schulze-Bahr, Kristine Jubele, Carlo de Asmundis, Nynke Hofman, Jacob Tfelt-Hansen, Serge Boveda, Giulio Conte, R Behr, E, Scrocco, C, M Wilde, A, Marijon, E, Crotti, L, E Iliodromitis, K, A Remme, C, Kosiuk, J, Rudaka, I, Sarquella Brugada, G, Frampton, K, Schulze-Bahr, E, Jubele, K, de Asmundis, C, Hofman, N, Tfelt-Hansen, J, Boveda, S, Conte, G, Elijah R Behr, Chiara Scrocco, Arthur A M Wilde, Eloi Marijon, Lia Crotti, Konstantinos E Iliodromitis, Carol A Remme, Jedrzej Kosiuk, Irina Rudaka, Georgia Sarquella Brugada, Katie Frampton, Eric Schulze-Bahr, Kristine Jubele, Carlo de Asmundis, Nynke Hofman, Jacob Tfelt-Hansen, Serge Boveda, and Giulio Conte

Abstract

The aims of this centre-based survey, promoted and disseminated by the European Heart Rhythm Association (EHRA) was to investigate the current practice for the investigation of Sudden Unexplained Death in the Young (SUDY) amongst European countries. An online questionnaire composed of 21 questions was submitted to the EHRA Research Network, European Cardiac Arrhythmia Genetics (ECGen) Focus Group members, and European Reference Network GUARD-Heart healthcare partners. There were 81 respondents from 24 European countries. The majority (78%) worked in a dedicated clinic focusing on families with inherited cardiac conditions and/or SUDY or had easy access to a nearby one. On average, an autopsy was performed in 43% of SUDY cases. Macroscopic examination of the body and all organs were completed in 71% of cases undergoing autopsy, and expert cardiac examination in 32%. Post-mortem genetic testing was requested on average in 37% of Sudden Arrhythmic Death Syndrome (SADS) cases, but not at all by 20% of survey respondents. Psychological support and bereavement counselling for SADS/SUDY families were available for ≤50% of participants. Whilst electrocardiogram (ECG) and echocardiography were largely employed to investigate SADS relatives, there was an inconsistent approach to the use of provocative testing with exercise ECG, sodium channel blocking drugs, and/or epinephrine and genetic testing. The survey highlighted a significant heterogeneity of service provision and variable adherence to current recommendations for the investigation of SUDY, partly attributable to the availability of dedicated units and specialist tests, genetic evaluation, and post-mortem examination.

Published
2022

11. Transethnic Genome-Wide Association Study Provides Insights in the Genetic Architecture and Heritability of Long QT Syndrome .

Author

Lahrouchi, N., Tadros, R., Crotti, L., Mizusawa, Y., Postema, P.G., Beekman, L., Walsh, R., Hasegawa, K., Barc, J., Ernsting, M., Turkowski, K.L., Mazzanti, A., Beckmann, B.M., Shimamoto, K., Diamant, U.B., Wijeyeratne, Y.D., Kucho, Y., Robyns, T., Ishikawa, T., Arbelo, E., Christiansen, M., Winbo, A., Jabbari, R., Lubitz, S.A., Steinfurt, J., Rudic, B., Loeys, B., Shoemaker, M.B., Weeke, P.E., Pfeiffer, R., Davies, B., Andorin, A., Hofman, N., Dagradi, F., Pedrazzini, M., Tester, D.J., Bos, J.M, Sarquella-Brugada, G., Campuzano, Ó., Platonov, P.G., Stallmeyer, B., Zumhagen, S., Nannenberg, E.A., Veldink, J.H., Berg, L.H. van den, Al-Chalabi, A., Shaw, C.E., Shaw, P.J., Morrison, K.E., Andersen, P.M., Müller-Nurasyid, M., Cusi, D., Barlassina, C., Galan, P., Lathrop, M., Munter, M., Werge, T., Ribasés, M., Aung, T., Khor, C.C., Ozaki, M., Lichtner, P., Meitinger, T., Tintelen, J.P. van, Hoedemaekers, Y.M., Denjoy, I., Leenhardt, A., Napolitano, C., Shimizu, W., Schott, J.J., Gourraud, J.B., Makiyama, T., Ohno, S., Itoh, H., Krahn, A.D., Antzelevitch, C., Roden, D.M., Saenen, J., Borggrefe, M., Odening, K.E., Ellinor, P.T., Tfelt-Hansen, J., Skinner, J.R., Berg, M.P., Olesen, M.S., Brugada, J., Brugada, R., Makita, N., Breckpot, J., Yoshinaga, M., Behr, E.R., Rydberg, A., Aiba, T., Kääb, S., Priori, S.G., Guicheney, P., Tan, H.L., Newton-Cheh, C., Ackerman, M.J., Schwartz, P.J., Lahrouchi, N., Tadros, R., Crotti, L., Mizusawa, Y., Postema, P.G., Beekman, L., Walsh, R., Hasegawa, K., Barc, J., Ernsting, M., Turkowski, K.L., Mazzanti, A., Beckmann, B.M., Shimamoto, K., Diamant, U.B., Wijeyeratne, Y.D., Kucho, Y., Robyns, T., Ishikawa, T., Arbelo, E., Christiansen, M., Winbo, A., Jabbari, R., Lubitz, S.A., Steinfurt, J., Rudic, B., Loeys, B., Shoemaker, M.B., Weeke, P.E., Pfeiffer, R., Davies, B., Andorin, A., Hofman, N., Dagradi, F., Pedrazzini, M., Tester, D.J., Bos, J.M, Sarquella-Brugada, G., Campuzano, Ó., Platonov, P.G., Stallmeyer, B., Zumhagen, S., Nannenberg, E.A., Veldink, J.H., Berg, L.H. van den, Al-Chalabi, A., Shaw, C.E., Shaw, P.J., Morrison, K.E., Andersen, P.M., Müller-Nurasyid, M., Cusi, D., Barlassina, C., Galan, P., Lathrop, M., Munter, M., Werge, T., Ribasés, M., Aung, T., Khor, C.C., Ozaki, M., Lichtner, P., Meitinger, T., Tintelen, J.P. van, Hoedemaekers, Y.M., Denjoy, I., Leenhardt, A., Napolitano, C., Shimizu, W., Schott, J.J., Gourraud, J.B., Makiyama, T., Ohno, S., Itoh, H., Krahn, A.D., Antzelevitch, C., Roden, D.M., Saenen, J., Borggrefe, M., Odening, K.E., Ellinor, P.T., Tfelt-Hansen, J., Skinner, J.R., Berg, M.P., Olesen, M.S., Brugada, J., Brugada, R., Makita, N., Breckpot, J., Yoshinaga, M., Behr, E.R., Rydberg, A., Aiba, T., Kääb, S., Priori, S.G., Guicheney, P., Tan, H.L., Newton-Cheh, C., Ackerman, M.J., and Schwartz, P.J.

Abstract

Contains fulltext : 230155.pdf (Publisher’s version ) (Open Access)

Published
2020

12. Heart Rate Recovery After Exercise Is Associated With Arrhythmic Events in Patients With Catecholaminergic Polymorphic Ventricular Tachycardia

Author

Lieve, KVV, Dusi, V, v.d. Werf, C, Bos, JM, Lane, CM, Stokke, MK, Roston, TM, Djupsjöbacka, A, Wada, Y, Denjoy, I, Bundgaard, H, Noguer, FRI, Semsarian, C, Robyns, T, Hofman, N, Tanck, MW, van den Berg, M P, Kammeraad, Janneke, Krahn, AD, Clur, SAB, Sacher, F, Till, J, Skinner, JR, Tfelt-Hansen, J, Probst, V, Leenhardt, A, Horie, M, Swan, H, Roberts, JD, Sanatani, S, Haugaa, KH, Schwartz, PJ, Ackerman, MJ, Wilde, AA, Lieve, KVV, Dusi, V, v.d. Werf, C, Bos, JM, Lane, CM, Stokke, MK, Roston, TM, Djupsjöbacka, A, Wada, Y, Denjoy, I, Bundgaard, H, Noguer, FRI, Semsarian, C, Robyns, T, Hofman, N, Tanck, MW, van den Berg, M P, Kammeraad, Janneke, Krahn, AD, Clur, SAB, Sacher, F, Till, J, Skinner, JR, Tfelt-Hansen, J, Probst, V, Leenhardt, A, Horie, M, Swan, H, Roberts, JD, Sanatani, S, Haugaa, KH, Schwartz, PJ, Ackerman, MJ, and Wilde, AA

Published
2020

14. Founder mutations in the Netherlands: SCN5a 1795insD, the first described arrhythmia overlap syndrome and one of the largest and best characterised families worldwide*

Author

Postema, P.G., primary, Van den Berg, M.P., additional, Van Tintelen, J.P., additional, Van den Heuvel, F., additional, Grundeken, M., additional, Hofman, N., additional, Van der Roest, W.P., additional, Nannenberg, E.A., additional, Krapels, I.P.C., additional, Bezzina, C.R., additional, and Wilde, A.A.M., additional

Published
2013
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20. Age and gender related differences in corrected QT interval in children and adolescents with LQT1 and LQT2

Author

Vink, A, Clur, S, Geskus, R, Blank, A, De Kezel, C, Loontjens, R, Bruijn, M, Hofman, N, Wilde, A, and Blom, N

Abstract

Children and adolescents with congenital Long QT Syndrome (LQTS) are an important risk group with age, gender and genotype related differences in cardiac events pre and post onset of puberty. The extent of the prolongation of the QT interval corrected for the heart rate (QTc) is associated with an increased risk for cardiac events. The magnitude of age, gender and genotype influences on QTc interval are limited to the comparison of baseline measurements between categorical age groups, rather than age related trends in QTc intervals.

Published
2018

21. Hypertrophic cardiomyopathy in Maine Coon cats in The Netherlands The significance of the MYBPC3-A31P mutation and other known causative mutations, and the utility of N-terminal pro-brain natriuretic peptide in the diagnosis of this condition.

Author

Hofman, N., Dirven, M.J.M (Thesis Advisor), van Steenbeek, F.G., Hofman, N., Dirven, M.J.M (Thesis Advisor), and van Steenbeek, F.G.

Abstract

Background: Hypertrophic cardiomyopathy (HCM) is the most common cardiomyopathy in cats and it is postulated to inherit as an autosomal dominant trait. Thus far, two mutations in the MYBPC3 gene are known. However, the relationship between genotype and phenotype is unclear. The gold standard test to diagnose HCM is echocardiography. However, this method has limited availability and is operator dependent. Measurement of N-terminal pro-brain natriuretic peptide (NT-proBNP) has been reported to be valuable in detecting HCM in cats. Objectives: The aims of this study were to fully phenotype Maine Coon cats from the Dutch population, to establish the phenotype-genotype correlation within these cats, and to measure NT-proBNP and compare these results with echocardiography as a screening test for the diagnosis of HCM Methods: Maine Coon cats (n=30) were classified using echocardiography as phenotypically healthy (n=19), or cats with an equivocal phenotype (n=3), or cats with HCM (n=8). Plasma NT-proBNP concentrations were measured in 33 Maine Coon cats. A total of 44 Maine Coon cats have been genotyped. Results: Based on echocardiography, 22 cats classified as healthy and eight as HCM. The HCM mutation A31P was found in four (66.7%) of the healthy cats, one of the equivocal cats (16.7%), and one (16.7%) of the HCM cats. The A74T mutation was found in twelve (80.0%) of the healthy cats and three (20.0%) of the HCM cats. HCM allele frequencies did not differ significantly between ‘healthy’ and ‘HCM’ groups (p=0.64 for A31P; p=0.54 for A74T). NT-proBNP concentrations ranged between <24 pmol/l and 278 pmol/l (median 31 pmol/l) in healthy cats and ranged between <24 pmol/l and >1500 pmol/l (median 197 pmol/l) in affected cats. The concentrations were significantly higher in affected cats compared to healthy cats (p=0.008). Conclusion: The value of genetic tests for detecting HCM is low in the cats of this study. The mutations analysed appear to have a low penetrance. NT-p

Published
2018

22. Case report of a posterior disc displacement without and with reduction.

Author

Slater JJR, Lobbezoo F, Hofman N, and Naeije M

Abstract

This article presents the case of a patient with an acute posterior disc displacement without reduction (PDDWR), whose temporomandibular joint (TMJ) showed, after physiotherapeutic manipulation, the characteristics of a posterior disc displacement with reduction (PDDR). Opto-electronic condylar movement recordings in both the PDDR state and the PDDWR state, and magnetic resonance imaging (MRI) scans of the TMJ in the PDDR state were carried out to document the case. The first 2 physiotherapeutic manipulations were initially successful in reducing the disc, but a few days later the joint showed a relapse to the PDDWR state. From the third manipulation on, now 12 months ago, the patient has been free of symptoms of the PDDWR state. Condylar movement traces of the joint in the PDDWR state indicated that the condyle was prevented from entering the fossa completely. The downward condylar movement deflections during the early phase of closing, recorded after the second manipulation, showed the reduction of the posteriorly displaced disc during closing. The movement recordings also showed that the PDDR could be eliminated by submaximal opening and closing movements. The MRI scans, taken after the third, successful manipulation, showed the disc to be in a normal position with respect to the condyle when the mouth was closed, and to be posteriorly displaced when the mouth was maximally opened. The case shows that manipulation techniques may successfully reverse an acute PDDWR into a PDDR. The technique of MRIs and condylar movement recordings show promise in further unraveling the morphological and clinical features of posterior disc displacements. [ABSTRACT FROM AUTHOR]

Published
2005

23. P6380How to determine the QT interval: comprehensive analysis of a large cohort of Long QT syndrome patients and controls

Author

Vink, A.S., primary, Neumann, B., additional, Lieve, K.V.V., additional, Hofman, N., additional, El Kadi, S., additional, Schoenmaker, M.H.A., additional, Slaghekke, H.M.J., additional, Clur, S.A.B., additional, Blom, N.A., additional, Kaab, S., additional, Sinner, M.F., additional, Postema, P.G., additional, and Wilde, A.A.M., additional

Published
2017
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25. Physiologie de la reproduction, méthodes de reproduction assistée et suivi de gestation du zèbre.

Author

HOFMAN, N.

Abstract

Copyright of Revue de Médecine Vétérinaire is the property of Ecole Nationale Veterinaire de Toulouse and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2018

26. Variants in the 3' untranslated region of the KCNQ1-encoded Kv7.1 potassium channel modify disease severity in patients with type 1 long QT syndrome in an allele-specific manner

Author

Amin, A.S., Giudicessi, J.R., Tijsen, A.J., Spanjaart, A.M., Reckman, Y.J., Klemens, C.A., Tanck, M.W., Kapplinger, J.D., Hofman, N., Sinner, M.F., Müller, M., Wijnen, W.J., Tan, H.L., Bezzina, C.R., Creemers, E.E., Wilde, A.A., Ackerman, M.J., and Pinto, Y.M.

Subjects
Long QT syndrome, Single nucleotide polymorphism, 3 untranslated region, KCNQ1, QTc
Abstract

Aims Heterozygous mutations in KCNQ1 cause type 1 long QT syndrome (LQT1), a disease characterized by prolonged heart rate-corrected QT interval (QTc) and life-threatening arrhythmias. It is unknown why disease penetrance and expressivity is so variable between individuals hosting identical mutations. We aimed to study whether this can be explained by single nucleotide polymorphisms (SNPs) in KCNQ1's 3' untranslated region (3'UTR). Methods and results This study was performed in 84 LQT1 patients from the Academic Medical Center in Amsterdam and validated in 84 LQT1 patients from the Mayo Clinic in Rochester. All patients were genotyped for SNPs in KCNQ1's 3'UTR, and six SNPs were found. Single nucleotide polymorphisms rs2519184, rs8234, and rs10798 were associated in an allele-specific manner with QTc and symptom occurrence. Patients with the derived SNP variants on their mutated KCNQ1 allele had shorter QTc and fewer symptoms, while the opposite was also true: patients with the derived SNP variants on their normal KCNQ1 allele had significantly longer QTc and more symptoms. Luciferase reporter assays showed that the expression of KCNQ1's 3'UTR with the derived SNP variants was lower than the expression of the 3'UTR with the ancestral SNP variants. Conclusion Our data indicate that 3'UTR SNPs potently modify disease severity in LQT1. The allele-specific effects of the SNPs on disease severity and gene expression strongly suggest that they are functional variants that directly alter the expression of the allele on which they reside, and thereby influence the balance between proteins stemming from either the normal or the mutant KCNQ1 allele.

Published
2012

28. Genetic association study of QT interval highlights role for calcium signaling pathways in myocardial repolarization

Author

Arking, D.E. (Dan), Pulit, S.L. (Sara), Crotti, L. (Lia), Harst, P. (Pim) van der, Munroe, P. (Patricia), Koopmann, T.T. (Tamara), Sotoodehnia, N. (Nona), Rossin, E. (Elizabeth), Morley, M. (Michael), Wang, X. (Xinchen), Johnson, A.D. (Andrew), Lundby, A. (Alicia), Gudbjartsson, D.F. (Daniel), Noseworthy, P.A. (Peter), Eijgelsheim, M. (Mark), Bradford, Y. (Yuki), Tarasov, K.V. (Kirill), Dörr, M. (Marcus), Müller-Nurasyid, M. (Martina), Lahtinen, A.M. (Annukka), Nolte, I.M. (Ilja), Smith, A.V. (Davey), Bis, J.C. (Joshua), Isaacs, A.J. (Aaron), Newhouse, S.J. (Stephen), Evans, D.S. (Daniel), Post, W.S. (Wendy S.), Waggott, D. (Daryl), Lyytikäinen, L.-P. (Leo-Pekka), Hicks, A.A. (Andrew), Eisele, L. (Lewin), Ellinghaus, D. (David), Hayward, C. (Caroline), Navarro, P. (Pau), Ulivi, S. (Shelia), Tanaka, T. (Toshiko), Tester, D.J. (David), Chatel, S. (Stéphanie), Gustafsson, S. (Stefan), Kumari, M. (Meena), Morris, R.W. (Richard), Naluai, A.T. (Asa), Padmanabhan, S. (Sandosh), Kluttig, A. (Alexander), Strohmer, B. (Bernhard), Panayiotou, A.G. (Andrie), Torres, M. (Maria), Knoflach, M. (Michael), Hubacek, J.A. (Jaroslav A.), Slowikowski, K. (Kamil), Raychaudhuri, S. (Soumya), Kumar, R.D. (Runjun), Harris, T.B. (Tamara), Launer, L.J. (Lenore), Shuldiner, A.R. (Alan), Alonso, A. (Alvaro), Bader, J.S. (Joel), Ehret, G.B. (Georg), Huang, H. (Hailiang), Kao, W.H.L. (Wen), Strait, J.B. (James), Macfarlane, P.W. (Peter), Brown, M.J. (Morris), Caulfield, M. (Mark), Samani, N.J. (Nilesh), Kronenberg, F. (Florian), Willeit, J. (Johann), Smith, J.G. (J. Gustav), Greiser, K.H. (Karin Halina), Zu Schwabedissen, H.M. (Henriette Meyer), Werdan, K. (Karl), Carella, C. (Cintia), Zelante, L. (Leopoldo), Heckbert, S.R. (Susan), Psaty, B.M. (Bruce), Rotter, J.I. (Jerome), Kolcic, I. (Ivana), Polasek, O. (Ozren), Wright, A.F. (Alan), Griffin, M. (Maura), Daly, M.J. (Mark), Arnar, D.O. (David), Hólm, H. (Hilma), Thorsteinsdottir, U. (Unnur), Denny, J.C. (Joshua), Roden, D.M. (Dan), Zuvich, R.L. (Rebecca), Emilsson, V. (Valur), Plump, A.S. (Andrew), Larson, M.G. (Martin), O'Donnell, C.J. (Christopher), Yin, X. (Xiaoyan), Bobbo, M. (Marco), Adamo, P. (Pio) d', Iorio, A. (Annamaria), Sinagra, G. (Gianfranco), Carracedo, A. (Angel), Cummings, S.R. (Steven), Nalls, M.A. (Michael), Jula, A. (Antti), Kontula, K.K. (Kimmo), Marjamaa, A. (Annukka), Oikarinen, L. (Lasse), Perola, M. (Markus), Porthan, K. (Kimmo), Erbel, R. (Raimund), Hoffmann, P. (Per), Jöckel, K.-H. (Karl-Heinz), Kälsch, H. (Hagen), Nöthen, M.M. (Markus), Hoed, M. (Marcel) den, Loos, R.J.F. (Ruth), Thelle, D.S. (Dag), Gieger, C. (Christian), Meitinger, T. (Thomas), Perz, S. (Siegfried), Peters, A. (Annette), Prucha, H. (Hanna), Sinner, M.F. (Moritz), Waldenberger, M. (Melanie), Boer, R.A. (Rudolf) de, Franke, L. (Lude), Vleuten, P.A. (Pieter) van der, Beckmann, B.M. (Britt), Martens, E. (Eimo), Bardai, A. (Abdennasser), Hofman, N. (Nynke), Wilde, A.A.M. (Arthur), Behr, E.R. (Elijah), Dalageorgou, C. (Chrysoula), Giudicessi, J.R. (John), Medeiros-Domingo, A. (Argelia), Barc, J. (Julien), Kyndt, F. (Florence), Probst, V. (Vincent), Ghidoni, A. (Alice), Insolia, R. (Roberto), Hamilton, R.M. (Robert), Scherer, S.W. (Stephen), Brandimarto, J. (Jeffrey), Margulies, K. (Kenneth), Moravec, C.E. (Christine), Del Greco, F. (Fabiola), Fuchsberger, C. (Christian), O'Connell, J.R. (Jeffery), Lee, W.K. (Wai), Watt, G.C.M. (Graham), Campbell, H. (Harry), Wild, S.H. (Sarah), El Mokhtari, N.E. (Nour), Frey, N. (Norbert), Asselbergs, F.W. (Folkert), Leach, I.M. (Irene Mateo), Navis, G. (Gerjan), Berg, M.P. (Maarten) van den, Veldhuisen, D.J. (Dirk) van, Kellis, M. (Manolis), Krijthe, B.P. (Bouwe), Franco, O.H. (Oscar), Hofman, A. (Albert), Kors, J.A. (Jan), Uitterlinden, A.G. (André), Witteman, J.C.M. (Jacqueline), Kedenko, L. (Lyudmyla), Lamina, C. (Claudia), Oostra, B.A. (Ben), Abecasis, G.R. (Gonçalo), Lakatta, E. (Edward), Mulas, A. (Antonella), Orrù, M. (Marco), Schlessinger, D. (David), Uda, M. (Manuela), Markus, M.R.P. (Marcello R. P.), Völker, U. (Uwe), Snieder, H. (Harold), Spector, T.D. (Timothy), Ärnlöv, J. (Johan), Lind, L. (Lars), Sundstrom, J. (Johan), Syvanen, A.C., Kivimaki, M. (Mika), Kähönen, M. (Mika), Mononen, K. (Kari), Raitakari, O. (Olli), Viikari, J. (Jorma), Adamkova, V. (Vera), Kiechl, S. (Stefan), Brion, M.-J. (Maria), Nicolaides, A.N. (Andrew), Paulweber, B. (Bernhard), Haerting, J. (Johannes), Dominiczak, A. (Anna), Nyberg, F. (Fredrik), Whincup, P.H. (Peter), Hingorani, A. (Aroon), Schott, J.-J. (Jean-Jacques), Bezzina, C.R. (Connie), Ingelsson, E. (Erik), Ferrucci, L. (Luigi), Gasparini, P. (Paolo), Wilson, J.F. (James), Rudan, I. (Igor), Franke, A. (Andre), Mühleisen, T.W. (Thomas), Pramstaller, P.P. (Peter Paul), Lehtimäki, T. (Terho), Paterson, A.D. (Andrew), Parsa, A. (Afshin), Liu, Y. (YongMei), Duijn, C.M. (Cornelia) van, Siscovick, D.S. (David), Gudnason, V. (Vilmundur), Jamshidi, Y. (Yalda), Salomaa, V. (Veikko), Felix, S.B. (Stephan), Sanna, S. (Serena), Ritchie, M.D. (Marylyn), Stricker, B.H.Ch. (Bruno), Zwart, J-A. (John-Anker), Boyer, L.A. (Laurie), Cappola, T.P. (Thomas), Olsen, J.V. (Jesper), Lage, P. (Pedro), Schwartz, P.J. (Peter), Kääb, S. (Stefan), Chakravarti, A. (Aravinda), Ackerman, M. (Margaret), Pfeufer, A. (Arne), Bakker, P.I.W. (Paul) de, Newton-Cheh, C. (Christopher), Arking, D.E. (Dan), Pulit, S.L. (Sara), Crotti, L. (Lia), Harst, P. (Pim) van der, Munroe, P. (Patricia), Koopmann, T.T. (Tamara), Sotoodehnia, N. (Nona), Rossin, E. (Elizabeth), Morley, M. (Michael), Wang, X. (Xinchen), Johnson, A.D. (Andrew), Lundby, A. (Alicia), Gudbjartsson, D.F. (Daniel), Noseworthy, P.A. (Peter), Eijgelsheim, M. (Mark), Bradford, Y. (Yuki), Tarasov, K.V. (Kirill), Dörr, M. (Marcus), Müller-Nurasyid, M. (Martina), Lahtinen, A.M. (Annukka), Nolte, I.M. (Ilja), Smith, A.V. (Davey), Bis, J.C. (Joshua), Isaacs, A.J. (Aaron), Newhouse, S.J. (Stephen), Evans, D.S. (Daniel), Post, W.S. (Wendy S.), Waggott, D. (Daryl), Lyytikäinen, L.-P. (Leo-Pekka), Hicks, A.A. (Andrew), Eisele, L. (Lewin), Ellinghaus, D. (David), Hayward, C. (Caroline), Navarro, P. (Pau), Ulivi, S. (Shelia), Tanaka, T. (Toshiko), Tester, D.J. (David), Chatel, S. (Stéphanie), Gustafsson, S. (Stefan), Kumari, M. (Meena), Morris, R.W. (Richard), Naluai, A.T. (Asa), Padmanabhan, S. (Sandosh), Kluttig, A. (Alexander), Strohmer, B. (Bernhard), Panayiotou, A.G. (Andrie), Torres, M. (Maria), Knoflach, M. (Michael), Hubacek, J.A. (Jaroslav A.), Slowikowski, K. (Kamil), Raychaudhuri, S. (Soumya), Kumar, R.D. (Runjun), Harris, T.B. (Tamara), Launer, L.J. (Lenore), Shuldiner, A.R. (Alan), Alonso, A. (Alvaro), Bader, J.S. (Joel), Ehret, G.B. (Georg), Huang, H. (Hailiang), Kao, W.H.L. (Wen), Strait, J.B. (James), Macfarlane, P.W. (Peter), Brown, M.J. (Morris), Caulfield, M. (Mark), Samani, N.J. (Nilesh), Kronenberg, F. (Florian), Willeit, J. (Johann), Smith, J.G. (J. Gustav), Greiser, K.H. (Karin Halina), Zu Schwabedissen, H.M. (Henriette Meyer), Werdan, K. (Karl), Carella, C. (Cintia), Zelante, L. (Leopoldo), Heckbert, S.R. (Susan), Psaty, B.M. (Bruce), Rotter, J.I. (Jerome), Kolcic, I. (Ivana), Polasek, O. (Ozren), Wright, A.F. (Alan), Griffin, M. (Maura), Daly, M.J. (Mark), Arnar, D.O. (David), Hólm, H. (Hilma), Thorsteinsdottir, U. (Unnur), Denny, J.C. (Joshua), Roden, D.M. (Dan), Zuvich, R.L. (Rebecca), Emilsson, V. (Valur), Plump, A.S. (Andrew), Larson, M.G. (Martin), O'Donnell, C.J. (Christopher), Yin, X. (Xiaoyan), Bobbo, M. (Marco), Adamo, P. (Pio) d', Iorio, A. (Annamaria), Sinagra, G. (Gianfranco), Carracedo, A. (Angel), Cummings, S.R. (Steven), Nalls, M.A. (Michael), Jula, A. (Antti), Kontula, K.K. (Kimmo), Marjamaa, A. (Annukka), Oikarinen, L. (Lasse), Perola, M. (Markus), Porthan, K. (Kimmo), Erbel, R. (Raimund), Hoffmann, P. (Per), Jöckel, K.-H. (Karl-Heinz), Kälsch, H. (Hagen), Nöthen, M.M. (Markus), Hoed, M. (Marcel) den, Loos, R.J.F. (Ruth), Thelle, D.S. (Dag), Gieger, C. (Christian), Meitinger, T. (Thomas), Perz, S. (Siegfried), Peters, A. (Annette), Prucha, H. (Hanna), Sinner, M.F. (Moritz), Waldenberger, M. (Melanie), Boer, R.A. (Rudolf) de, Franke, L. (Lude), Vleuten, P.A. (Pieter) van der, Beckmann, B.M. (Britt), Martens, E. (Eimo), Bardai, A. (Abdennasser), Hofman, N. (Nynke), Wilde, A.A.M. (Arthur), Behr, E.R. (Elijah), Dalageorgou, C. (Chrysoula), Giudicessi, J.R. (John), Medeiros-Domingo, A. (Argelia), Barc, J. (Julien), Kyndt, F. (Florence), Probst, V. (Vincent), Ghidoni, A. (Alice), Insolia, R. (Roberto), Hamilton, R.M. (Robert), Scherer, S.W. (Stephen), Brandimarto, J. (Jeffrey), Margulies, K. (Kenneth), Moravec, C.E. (Christine), Del Greco, F. (Fabiola), Fuchsberger, C. (Christian), O'Connell, J.R. (Jeffery), Lee, W.K. (Wai), Watt, G.C.M. (Graham), Campbell, H. (Harry), Wild, S.H. (Sarah), El Mokhtari, N.E. (Nour), Frey, N. (Norbert), Asselbergs, F.W. (Folkert), Leach, I.M. (Irene Mateo), Navis, G. (Gerjan), Berg, M.P. (Maarten) van den, Veldhuisen, D.J. (Dirk) van, Kellis, M. (Manolis), Krijthe, B.P. (Bouwe), Franco, O.H. (Oscar), Hofman, A. (Albert), Kors, J.A. (Jan), Uitterlinden, A.G. (André), Witteman, J.C.M. (Jacqueline), Kedenko, L. (Lyudmyla), Lamina, C. (Claudia), Oostra, B.A. (Ben), Abecasis, G.R. (Gonçalo), Lakatta, E. (Edward), Mulas, A. (Antonella), Orrù, M. (Marco), Schlessinger, D. (David), Uda, M. (Manuela), Markus, M.R.P. (Marcello R. P.), Völker, U. (Uwe), Snieder, H. (Harold), Spector, T.D. (Timothy), Ärnlöv, J. (Johan), Lind, L. (Lars), Sundstrom, J. (Johan), Syvanen, A.C., Kivimaki, M. (Mika), Kähönen, M. (Mika), Mononen, K. (Kari), Raitakari, O. (Olli), Viikari, J. (Jorma), Adamkova, V. (Vera), Kiechl, S. (Stefan), Brion, M.-J. (Maria), Nicolaides, A.N. (Andrew), Paulweber, B. (Bernhard), Haerting, J. (Johannes), Dominiczak, A. (Anna), Nyberg, F. (Fredrik), Whincup, P.H. (Peter), Hingorani, A. (Aroon), Schott, J.-J. (Jean-Jacques), Bezzina, C.R. (Connie), Ingelsson, E. (Erik), Ferrucci, L. (Luigi), Gasparini, P. (Paolo), Wilson, J.F. (James), Rudan, I. (Igor), Franke, A. (Andre), Mühleisen, T.W. (Thomas), Pramstaller, P.P. (Peter Paul), Lehtimäki, T. (Terho), Paterson, A.D. (Andrew), Parsa, A. (Afshin), Liu, Y. (YongMei), Duijn, C.M. (Cornelia) van, Siscovick, D.S. (David), Gudnason, V. (Vilmundur), Jamshidi, Y. (Yalda), Salomaa, V. (Veikko), Felix, S.B. (Stephan), Sanna, S. (Serena), Ritchie, M.D. (Marylyn), Stricker, B.H.Ch. (Bruno), Zwart, J-A. (John-Anker), Boyer, L.A. (Laurie), Cappola, T.P. (Thomas), Olsen, J.V. (Jesper), Lage, P. (Pedro), Schwartz, P.J. (Peter), Kääb, S. (Stefan), Chakravarti, A. (Aravinda), Ackerman, M. (Margaret), Pfeufer, A. (Arne), Bakker, P.I.W. (Paul) de, and Newton-Cheh, C. (Christopher)

Abstract

The QT interval, an electrocardiographic measure reflecting myocardial repolarization, is a heritable trait. QT prolongation is a risk factor for ventricular arrhythmias and sudden cardiac death (SCD) and could indicate the presence of the potentially lethal mendelian long-QT syndrome (LQTS). Using a genome-wide association and replication study in up to 100,000 individuals, we identified 35 common variant loci associated with QT interval that collectively explain ∼ 8-10% of QT-interval variation and highlight the importance of calcium regulation in myocardial repolarization. Rare variant analysis of 6 new QT interval-associated loci in 298 unrelated probands with LQTS identified coding variants not found in controls but of uncertain causality and therefore requiring validation. Several newly identified loci encode proteins that physically interact with other recognized repolarization proteins. Our integration of common variant association, expression and orthogonal protein-protein interaction screens provides new insights into cardiac electrophysiology and identifies new candidate genes for ventricular arrhythmias, LQTS and SCD.

Published
2014
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29. Genetic association study of QT interval highlights role for calcium signaling pathways in myocardial repolarization

Author

Arking, D, Pulit, S, Crotti, L, van der Harst, P, Munroe, P, Koopmann, T, Sotoodehnia, N, Rossin, E, Morley, M, Wang, X, Johnson, A, Lundby, A, Gudbjartsson, D, Noseworthy, P, Eijgelsheim, M, Bradford, Y, Tarasov, K, Dörr, M, Müller-Nurasyid, M, Lahtinen, A, Nolte, I, Smith, A, Bis, J, Isaacs, A, Newhouse, S, Evans, D, Post, W, Waggott, D, Lyytikäinen, L, Hicks, A, Eisele, L, Ellinghaus, D, Hayward, C, Navarro, P, Ulivi, S, Tanaka, T, Tester, D, Chatel, S, Gustafsson, S, Kumari, M, Morris, R, Naluai, A, Padmanabhan, S, Kluttig, A, Strohmer, B, Panayiotou, A, Torres, M, Knoflach, M, Hubacek, J, Slowikowski, K, Raychaudhuri, S, Kumar, R, Harris, T, Launer, L, Shuldiner, A, Alonso, A, Bader, J, Ehret, G, Huang, H, Kao, W, Strait, J, Macfarlane, P, Brown, M, Caulfield, M, Samani, N, Kronenberg, F, Willeit, J, Smith, J, Greiser, K, Meyer Zu Schwabedissen, H, Werdan, K, Carella, M, Zelante, L, Heckbert, S, Psaty, B, Rotter, J, Kolcic, I, Polašek, O, Wright, A, Griffin, M, Daly, M, Arnar, D, Hólm, H, Thorsteinsdottir, U, Denny, J, Roden, D, Zuvich, R, Emilsson, V, Plump, A, Larson, M, O'Donnell, C, Yin, X, Bobbo, M, D'Adamo, A, Iorio, A, Sinagra, G, Carracedo, A, Cummings, S, Nalls, M, Jula, A, Kontula, K, Marjamaa, A, Oikarinen, L, Perola, M, Porthan, K, Erbel, R, Hoffmann, P, Jöckel, K, Kälsch, H, Nöthen, M, den Hoed, M, Loos, R, Thelle, D, Gieger, C, Meitinger, T, Perz, S, Peters, A, Prucha, H, Sinner, M, Waldenberger, M, de Boer, R, Franke, L, van der Vleuten, P, Beckmann, B, Martens, E, Bardai, A, Hofman, N, Wilde, A, Behr, E, Dalageorgou, C, Giudicessi, J, Medeiros-Domingo, A, Kyndt, F, Probst, V, Ghidoni, A, Insolia, R, Hamilton, R, Scherer, S, Brandimarto, J, Margulies, K, Moravec, C, Greco, M, Fuchsberger, C, O'Connell, J, Lee, W, Watt, G, Campbell, H, Wild, S, El Mokhtari, N, Frey, N, Asselbergs, F, Mateo Leach, I, Navis, G, van den Berg, M, van Veldhuisen, D, Kellis, M, Krijthe, B, Franco, O, Hofman, A, Kors, J, Uitterlinden, A, Witteman, J, Kedenko, L, Lamina, C, Oostra, B, Abecasis, G, Lakatta, E, Mulas, A, Orrú, M, Schlessinger, D, Uda, M, Markus, M, Völker, U, Snieder, H, Spector, T, Arnlöv, J, Lind, L, Sundström, J, Syvänen, A, Kivimaki, M, Kähönen, M, Mononen, N, Raitakari, O, Viikari, J, Adamkova, V, Kiechl, S, Brion, M, Nicolaides, A, Paulweber, B, Haerting, J, Dominiczak, A, Nyberg, F, Whincup, P, Hingorani, A, Schott, J, Bezzina, C, Ingelsson, E, Ferrucci, L, Gasparini, P, Wilson, J, Rudan, I, Franke, A, Mühleisen, T, Pramstaller, P, Lehtimäki, T, Paterson, A, Parsa, A, Liu, Y, van Duijn, C, Siscovick, D, Gudnason, V, Jamshidi, Y, Salomaa, V, Felix, S, Sanna, S, Ritchie, M, Stricker, B, Stefansson, K, Boyer, L, Cappola, T, Olsen, J, Lage, K, Schwartz, P, Kääb, S, Chakravarti, A, Ackerman, M, Pfeufer, A, de Bakker, P, Newton-Cheh, C, Arking, DE, Pulit, SL, Munroe, PB, Rossin, EJ, Johnson, AD, Gudbjartsson, DF, Noseworthy, PA, Tarasov, KV, Lahtinen, AM, Nolte, IM, Smith, AV, Bis, JC, Newhouse, SJ, Evans, DS, Post, WS, Lyytikäinen, LP, Hicks, AA, Tester, DJ, Morris, RW, Naluai, AT, Panayiotou, AG, Hubacek, JA, Kumar, RD, Harris, TB, Launer, LJ, Shuldiner, AR, Bader, JS, Kao, WH, Strait, JB, Macfarlane, PW, Caulfield, MJ, Samani, NJ, Smith, JG, Greiser, KH, Heckbert, SR, Psaty, BM, Rotter, JI, Wright, AF, Daly, MJ, Arnar, DO, Denny, JC, Roden, DM, Zuvich, RL, Plump, AS, Larson, MG, O'Donnell, CJ, D'Adamo, AP, Cummings, SR, Nalls, MA, Kontula, KK, Jöckel, KH, Nöthen, MM, Loos, RJ, Thelle, DS, Sinner, MF, de Boer, RA, van der Vleuten, PA, Beckmann, BM, Wilde, AA, Behr, ER, Giudicessi, JR, Hamilton, RM, Scherer, SW, Moravec, CE, Greco, MFD, O'Connell, JR, Lee, WK, Watt, GC, Wild, SH, El Mokhtari, NE, Asselbergs, FW, van den Berg, MP, van Veldhuisen, DJ, Krijthe, BP, Franco, OH, Kors, JA, Uitterlinden, AG, Witteman, JC, Oostra, BA, Abecasis, GR, Lakatta, EG, Markus, MR, Spector, TD, Syvänen, AC, Raitakari, OT, Viikari, JS, Nicolaides, AN, Dominiczak, AF, Whincup, PH, Hingorani, AD, Schott, JJ, Bezzina, CR, Wilson, JF, Mühleisen, TW, Pramstaller, PP, Lehtimäki, TJ, Paterson, AD, van Duijn, CM, Siscovick, DS, Felix, SB, Ritchie, MD, Stricker, BH, Boyer, LA, Cappola, TP, Olsen, JV, Schwartz, PJ, Ackerman, MJ, de Bakker, PI, Arking, D, Pulit, S, Crotti, L, van der Harst, P, Munroe, P, Koopmann, T, Sotoodehnia, N, Rossin, E, Morley, M, Wang, X, Johnson, A, Lundby, A, Gudbjartsson, D, Noseworthy, P, Eijgelsheim, M, Bradford, Y, Tarasov, K, Dörr, M, Müller-Nurasyid, M, Lahtinen, A, Nolte, I, Smith, A, Bis, J, Isaacs, A, Newhouse, S, Evans, D, Post, W, Waggott, D, Lyytikäinen, L, Hicks, A, Eisele, L, Ellinghaus, D, Hayward, C, Navarro, P, Ulivi, S, Tanaka, T, Tester, D, Chatel, S, Gustafsson, S, Kumari, M, Morris, R, Naluai, A, Padmanabhan, S, Kluttig, A, Strohmer, B, Panayiotou, A, Torres, M, Knoflach, M, Hubacek, J, Slowikowski, K, Raychaudhuri, S, Kumar, R, Harris, T, Launer, L, Shuldiner, A, Alonso, A, Bader, J, Ehret, G, Huang, H, Kao, W, Strait, J, Macfarlane, P, Brown, M, Caulfield, M, Samani, N, Kronenberg, F, Willeit, J, Smith, J, Greiser, K, Meyer Zu Schwabedissen, H, Werdan, K, Carella, M, Zelante, L, Heckbert, S, Psaty, B, Rotter, J, Kolcic, I, Polašek, O, Wright, A, Griffin, M, Daly, M, Arnar, D, Hólm, H, Thorsteinsdottir, U, Denny, J, Roden, D, Zuvich, R, Emilsson, V, Plump, A, Larson, M, O'Donnell, C, Yin, X, Bobbo, M, D'Adamo, A, Iorio, A, Sinagra, G, Carracedo, A, Cummings, S, Nalls, M, Jula, A, Kontula, K, Marjamaa, A, Oikarinen, L, Perola, M, Porthan, K, Erbel, R, Hoffmann, P, Jöckel, K, Kälsch, H, Nöthen, M, den Hoed, M, Loos, R, Thelle, D, Gieger, C, Meitinger, T, Perz, S, Peters, A, Prucha, H, Sinner, M, Waldenberger, M, de Boer, R, Franke, L, van der Vleuten, P, Beckmann, B, Martens, E, Bardai, A, Hofman, N, Wilde, A, Behr, E, Dalageorgou, C, Giudicessi, J, Medeiros-Domingo, A, Kyndt, F, Probst, V, Ghidoni, A, Insolia, R, Hamilton, R, Scherer, S, Brandimarto, J, Margulies, K, Moravec, C, Greco, M, Fuchsberger, C, O'Connell, J, Lee, W, Watt, G, Campbell, H, Wild, S, El Mokhtari, N, Frey, N, Asselbergs, F, Mateo Leach, I, Navis, G, van den Berg, M, van Veldhuisen, D, Kellis, M, Krijthe, B, Franco, O, Hofman, A, Kors, J, Uitterlinden, A, Witteman, J, Kedenko, L, Lamina, C, Oostra, B, Abecasis, G, Lakatta, E, Mulas, A, Orrú, M, Schlessinger, D, Uda, M, Markus, M, Völker, U, Snieder, H, Spector, T, Arnlöv, J, Lind, L, Sundström, J, Syvänen, A, Kivimaki, M, Kähönen, M, Mononen, N, Raitakari, O, Viikari, J, Adamkova, V, Kiechl, S, Brion, M, Nicolaides, A, Paulweber, B, Haerting, J, Dominiczak, A, Nyberg, F, Whincup, P, Hingorani, A, Schott, J, Bezzina, C, Ingelsson, E, Ferrucci, L, Gasparini, P, Wilson, J, Rudan, I, Franke, A, Mühleisen, T, Pramstaller, P, Lehtimäki, T, Paterson, A, Parsa, A, Liu, Y, van Duijn, C, Siscovick, D, Gudnason, V, Jamshidi, Y, Salomaa, V, Felix, S, Sanna, S, Ritchie, M, Stricker, B, Stefansson, K, Boyer, L, Cappola, T, Olsen, J, Lage, K, Schwartz, P, Kääb, S, Chakravarti, A, Ackerman, M, Pfeufer, A, de Bakker, P, Newton-Cheh, C, Arking, DE, Pulit, SL, Munroe, PB, Rossin, EJ, Johnson, AD, Gudbjartsson, DF, Noseworthy, PA, Tarasov, KV, Lahtinen, AM, Nolte, IM, Smith, AV, Bis, JC, Newhouse, SJ, Evans, DS, Post, WS, Lyytikäinen, LP, Hicks, AA, Tester, DJ, Morris, RW, Naluai, AT, Panayiotou, AG, Hubacek, JA, Kumar, RD, Harris, TB, Launer, LJ, Shuldiner, AR, Bader, JS, Kao, WH, Strait, JB, Macfarlane, PW, Caulfield, MJ, Samani, NJ, Smith, JG, Greiser, KH, Heckbert, SR, Psaty, BM, Rotter, JI, Wright, AF, Daly, MJ, Arnar, DO, Denny, JC, Roden, DM, Zuvich, RL, Plump, AS, Larson, MG, O'Donnell, CJ, D'Adamo, AP, Cummings, SR, Nalls, MA, Kontula, KK, Jöckel, KH, Nöthen, MM, Loos, RJ, Thelle, DS, Sinner, MF, de Boer, RA, van der Vleuten, PA, Beckmann, BM, Wilde, AA, Behr, ER, Giudicessi, JR, Hamilton, RM, Scherer, SW, Moravec, CE, Greco, MFD, O'Connell, JR, Lee, WK, Watt, GC, Wild, SH, El Mokhtari, NE, Asselbergs, FW, van den Berg, MP, van Veldhuisen, DJ, Krijthe, BP, Franco, OH, Kors, JA, Uitterlinden, AG, Witteman, JC, Oostra, BA, Abecasis, GR, Lakatta, EG, Markus, MR, Spector, TD, Syvänen, AC, Raitakari, OT, Viikari, JS, Nicolaides, AN, Dominiczak, AF, Whincup, PH, Hingorani, AD, Schott, JJ, Bezzina, CR, Wilson, JF, Mühleisen, TW, Pramstaller, PP, Lehtimäki, TJ, Paterson, AD, van Duijn, CM, Siscovick, DS, Felix, SB, Ritchie, MD, Stricker, BH, Boyer, LA, Cappola, TP, Olsen, JV, Schwartz, PJ, Ackerman, MJ, and de Bakker, PI

Abstract

The QT interval, an electrocardiographic measure reflecting myocardial repolarization, is a heritable trait. QT prolongation is a risk factor for ventricular arrhythmias and sudden cardiac death (SCD) and could indicate the presence of the potentially lethal mendelian long-QT syndrome (LQTS). Using a genome-wide association and replication study in up to 100,000 individuals, we identified 35 common variant loci associated with QT interval that collectively explain ∼8-10% of QT-interval variation and highlight the importance of calcium regulation in myocardial repolarization. Rare variant analysis of 6 new QT interval-associated loci in 298 unrelated probands with LQTS identified coding variants not found in controls but of uncertain causality and therefore requiring validation. Several newly identified loci encode proteins that physically interact with other recognized repolarization proteins. Our integration of common variant association, expression and orthogonal protein-protein interaction screens provides new insights into cardiac electrophysiology and identifies new candidate genes for ventricular arrhythmias, LQTS and SCD

Published
2014

30. The yield of family screening in sudden unexplained death in the young

Author

Van De Werf, C., Hofman, N., Tan, H.L., Van Langen, I.M., Wilde, A.A.M., Reproductive Origins of Adult Health and Disease (ROAHD), and Health Psychology Research (HPR)

Subjects
faintness, diagnosis, exercise test, sudden death, heart arrhythmia, heart disease, heart, genetic analysis, electrocardiogram, university hospital, exercise electrocardiography, cause of death, autopsy, male, examination, death, long QT syndrome, echocardiography, Brugada syndrome, ajmaline, nuclear magnetic resonance imaging, hospital, gene, heart right ventricle dysplasia, Netherlands, family history, cardiologist, exercise, familial hypercholesterolemia, catecholaminergic polymorphic ventricular tachycardia, screening, Holter monitoring, society, cardiology, victim, heart arrest
Abstract

Objectives: When autopsy is performed after sudden death of a young person, cause of death remains undetermined in 6-65%, which is termed sudden unexplained death (SUD). In these cases molecular autopsy and cardiological and genetic examination in surviving first degree relatives is known to unmask its cause, especially primary arrhythmia syndromes. We explored the yield of family screening in a large series of young SUD victims. Methods: We studied all consecutive families who presented to the cardiogenetics department of our university hospital between 1996-2008 for family screening because of ≥1 first degree related SUD victim aged 1-50 years. In the Netherlands autopsy is not mandatory in these cases, and was not performed in 53.8%. It the remainder, autopsy did not reveal a cause of death. First, relatives were questioned on their personal and family medical history and a resting ECG was made. If possible, autopsy of the heart was revised. In most cases, relatives were referred to a cardiologist, who generally performed an exercise test and echocardiography. Other examinations, such as ajmaline drug challenge, Holter monitoring and cardiac MRI, were performed on indication. Genetic analysis of the associated candidate gene(s) was performed in material obtained from the deceased person or in those relatives with clinical abnormalities. Results: Relatives of 115 SUD victims (mean age at death 29.1 years, 67.8% male) were examined. In 52.6% events occurred at rest and in 29.8% upon exertion. Approximately 16% of the victims had experienced an unexplained syncope before the event, mainly at exertion, and one victim had survived a previous out-of-hospital cardiac arrest. A mean of 2.5 (1-8) first-degree relatives were examined per family (N=242). In 28 families another first degree family member aged

Published
2009

31. Genetische identificatie van patiënten en families met lange-QT-syndroom: Grote regionale verschillen in de resultaten van 10 jaar

Author

Hofman, N., Postema, P. G., van Langen, I. M., Nannenberg, E. A., Alders, M., Jongbloed, R., Smeets, H. J. M., Wilde, A. A. M., Reproductive Origins of Adult Health and Disease, Health Psychology Research, Human Genetics, Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam Gastroenterology Endocrinology Metabolism, and Other Research

Subjects
congenital, hereditary, and neonatal diseases and abnormalities, article, genetic identification, long QT syndrome, blood sampling, controlled study, DNA determination, cardiovascular diseases, genetic analysis, human, major clinical study
Abstract

OBJECTIVE: To determine the pattern of referral of Dutch patients with a long-QT syndrome (LQTS) on the basis of the postal codes of the LQTS probands from whom blood samples were submitted for DNA diagnostics. DESIGN:. Retrospective cohort study. METHOD: From the databases that are coupled to DNA diagnostics, all index patients were included for whom LQTS diagnostics had been requested during the period 1996-2005 at two clinical genetics centres (the University Medical Centre in Amsterdam and Maastricht University Hospital). The results were related to the postal code of the referred patient and corrected for the number of inhabitants of the region concerned. RESULTS: A total of 421 potential LQTS probands were included. Corrected for the numbers of inhabitants in the various postal codes, the number of referrals varied from 3 per million to 110 per million inhabitants. In view of the most recent estimated prevalence of LQTS (1:2000), this means that only 15% ofthe carriers of the LQTS mutation have so far been detected. CONCLUSION: There were large regional differences in the Netherlands in the requests for DNA diagnostics in patients with clinical LQTS. The overwhelming majority of the LQTS patients in the Netherlands have not yet been referred or identified. Expanding the available courses for general practitioners and cardiologists that are given by the staff of the cardiogenetic centres would seem to be indicated

Published
2007

41. Management of the non-descended testis: doubtful value of luteinizing-hormone-releasing-hormone (LHRH). A double-blind, placebo-controlled multicentre study

Author

OLSEN, L. H., primary, GENSTER, H. G., additional, MOSEGAARD, A., additional, JØRGENSEN, F. S., additional, HOFMAN, N., additional, JENSEN, V. B., additional, LASSEN, L. B., additional, RASSMUSSEN, M., additional, VINZENTS, L., additional, DAMMEGAARD, L., additional, MUNCK, S., additional, and BRÖNDUM-NIELSEN, K., additional

Published
1992
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47. Family and population strategies for screening and counselling of inherited cardiac arrhythmias.

Author

an Langen, I M v, Hofman, N, Tan, H L, and Wilde, A A M

Subjects
ARRHYTHMIA, HEART diseases, HUNTINGTON disease, CARDIOMYOPATHIES, FAMILIES, MEDICAL screening, GENETIC counseling
Abstract

Family screening in inherited cardiac arrhythmias has been performed in The Netherlands since 1996, when diagnostic DNA testing in long QT syndrome (LQTS) and hypertrophic cardiomyopathy (HCM) became technically possible. In multidisciplinary outpatient academic clinics, an adjusted protocol for genetic counselling, originally derived from predictive testing in Huntington's disease, is being used. 1110 Individuals, including 842 relatives of index patients, were informed about their risks, and most were tested molecularly and/or clinically for carriership of the disease present in their family. Of 345 relatives who were referred for cardiologic follow-up, 189 are being treated, because of an increased risk of life-threatening arrhythmias. Evaluation of the psychological and social consequences of family screening for inherited arrhythmias can be performed by using the adapted criteria of Wilson and Jüngner, i.e., from a point of view of public health. Preliminary results of psychological research show that parents of children at risk for LQTS show high levels of distress. Many other aspects have to be evaluated yet, making final conclusions about the feasibility of family screening difficult particularly in HCM. Clinical guidelines are urgently needed. Population screening by molecular testing, for instance in athletic preparticipation screening, will become possible in the future and has its own prerequisites for success. [ABSTRACT FROM AUTHOR]

Published
2004
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48. Identification of a possible pathogenic link between congenital long QT syndrome and epilepsySYMBOLSYMBOL

Author

Johnson, J N., Hofman, N, Haglund, C M., Cascino, G D., Wilde, A A.M., and Ackerman, M J.

Abstract

Long QT syndrome (LQTS) typically presents with syncope, seizures, or sudden death. Patients with LQTS have been misdiagnosed with a seizure disorder or epilepsy and treated with antiepileptic drug (AED) medication. The gene, KCNH2, responsible for type 2 LQTS (LQT2), was cloned originally from the hippocampus and encodes a potassium channel active in hippocampal astrocytes. We sought to test the hypothesis that a “seizure phenotype” was ascribed more commonly to patients with LQT2.

Published
2009
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