L. Ptácek

Publications202
h-index62
Citations13,935
Highly Influential Citations615
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An hPer2 Phosphorylation Site Mutation in Familial Advanced Sleep Phase Syndrome
Familial advanced sleep phase syndrome (FASPS) is an autosomal dominant circadian rhythm variant; affected individuals are “morning larks” with a 4-hour advance of the sleep, temperature, and… Expand
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Mutations in Kir2.1 Cause the Developmental and Episodic Electrical Phenotypes of Andersen's Syndrome
Andersen's syndrome is characterized by periodic paralysis, cardiac arrhythmias, and dysmorphic features. We have mapped an Andersen's locus to chromosome 17q23 near the inward rectifying potassium… Expand
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Functional and clinical characterization of KCNJ2 mutations associated with LQT7 (Andersen syndrome).
Andersen syndrome (AS) is a rare, inherited disorder characterized by periodic paralysis, long QT (LQT) with ventricular arrhythmias, and skeletal developmental abnormalities. We recently established… Expand
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Modeling of a Human Circadian Mutation Yields Insights into Clock Regulation by PER2
Circadian rhythms are endogenous oscillations of physiological and behavioral phenomena with period length of approximately 24 hr. A mutation in human Period 2 (hPER2), a gene crucial for resetting… Expand
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Clinical evaluation of idiopathic paroxysmal kinesigenic dyskinesia
Background: Paroxysmal kinesigenic dyskinesia (PKD) is a rare disorder characterized by short episodes of involuntary movement attacks triggered by sudden voluntary movements. Although a genetic… Expand
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Sumatriptan alleviates nitroglycerin-induced mechanical and thermal allodynia in mice
The association between the clinical use of nitroglycerin (NTG) and headache has led to the examination of NTG as a model trigger for migraine and related headache disorders, both in humans and… Expand
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Correlating phenotype and genotype in the periodic paralyses
Background: Periodic paralyses and paramyotonia congenita are rare disorders causing disabling weakness and myotonia. Mutations in sodium, calcium, and potassium channels have been recognized as… Expand
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Mutations in the gene PRRT2 cause paroxysmal kinesigenic dyskinesia with infantile convulsions.
Paroxysmal kinesigenic dyskinesia with infantile convulsions (PKD/IC) is an episodic movement disorder with autosomal-dominant inheritance and high penetrance, but the causative genetic mutation is… Expand
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De novo mutations in ATP1A3 cause alternating hemiplegia of childhood
Alternating hemiplegia of childhood (AHC) is a rare, severe neurodevelopmental syndrome characterized by recurrent hemiplegic episodes and distinct neurological manifestations. AHC is usually a… Expand
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Electrocardiographic Features in Andersen-Tawil Syndrome Patients With KCNJ2 Mutations: Characteristic T-U–Wave Patterns Predict the KCNJ2 Genotype
Background—The ECG features of Andersen-Tawil syndrome (ATS) patients with KCNJ2 mutations (ATS1) have not been systematically assessed. This study aimed to define ECG features of KCNJ2 mutation… Expand
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