Cardiac channelopathies and sudden infant death syndrome
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Cardiac channelopathies and sudden infant death syndrome. / Tfelt-Hansen, Jacob; Winkel, Bo Gregers; Grunnet, Morten; Jespersen, Thomas.
In: The Cardiology, Vol. 119, No. 1, 2011, p. 21-33.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Cardiac channelopathies and sudden infant death syndrome
AU - Tfelt-Hansen, Jacob
AU - Winkel, Bo Gregers
AU - Grunnet, Morten
AU - Jespersen, Thomas
N1 - Copyright © 2011 S. Karger AG, Basel.
PY - 2011
Y1 - 2011
N2 - Sudden infant death syndrome (SIDS) is always a devastating and unexpected occurrence. SIDS is the leading cause of death in the first 6 months after birth in the industrialized world. Since the discovery in 1998 of long QT syndrome as an underlying substrate for SIDS, around 10-20% of SIDS cases have been proposed as being caused by genetic variants in either ion channel or ion channel-associated proteins. Until now, 10 cardiac channelopathy susceptibility genes have been found to be implicated in the pathogenesis of SIDS. Four of the genes encode cardiac ion channel a-subunits, 3 genes encode ion channel ß-subunits, and 3 genes encode other channel-interacting proteins. All 10 genes have been associated with primary electrical heart diseases. SIDS may hereby be the initial symptom of rare primary electric channelopathies such as long QT, short QT and Brugada syndrome, as well as catecholaminergic polymorphic ventricular tachycardia. In this review we describe the functional role of sodium, potassium and calcium channels in propagation, depolarization and repolarization in the context of the 4 arrhythmogenic diseases reported to be associated with SIDS. Lastly, the possibility of postmortem genetic testing and potential recommendations on how to deal with family members are discussed.
AB - Sudden infant death syndrome (SIDS) is always a devastating and unexpected occurrence. SIDS is the leading cause of death in the first 6 months after birth in the industrialized world. Since the discovery in 1998 of long QT syndrome as an underlying substrate for SIDS, around 10-20% of SIDS cases have been proposed as being caused by genetic variants in either ion channel or ion channel-associated proteins. Until now, 10 cardiac channelopathy susceptibility genes have been found to be implicated in the pathogenesis of SIDS. Four of the genes encode cardiac ion channel a-subunits, 3 genes encode ion channel ß-subunits, and 3 genes encode other channel-interacting proteins. All 10 genes have been associated with primary electrical heart diseases. SIDS may hereby be the initial symptom of rare primary electric channelopathies such as long QT, short QT and Brugada syndrome, as well as catecholaminergic polymorphic ventricular tachycardia. In this review we describe the functional role of sodium, potassium and calcium channels in propagation, depolarization and repolarization in the context of the 4 arrhythmogenic diseases reported to be associated with SIDS. Lastly, the possibility of postmortem genetic testing and potential recommendations on how to deal with family members are discussed.
KW - Arrhythmias, Cardiac
KW - Brugada Syndrome
KW - Channelopathies
KW - Family
KW - Humans
KW - Infant
KW - Infant, Newborn
KW - Long QT Syndrome
KW - Sudden Infant Death
U2 - 10.1159/000329047
DO - 10.1159/000329047
M3 - Journal article
C2 - 21778721
VL - 119
SP - 21
EP - 33
JO - Cardiology (Pakistan)
JF - Cardiology (Pakistan)
SN - 1811-8194
IS - 1
ER -
ID: 40472373