Nikos I Protonotarios

Learn More
BACKGROUND In 1994, an International Task Force proposed criteria for the clinical diagnosis of arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) that facilitated recognition and interpretation of the frequently nonspecific clinical features of ARVC/D. This enabled confirmatory clinical diagnosis in index cases through exclusion of(More)
BACKGROUND Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an autosomal dominant heart muscle disorder that causes arrhythmia, heart failure, and sudden death. Previously we mapped the genetic locus for the triad of autosomal recessive ARVC, palmoplantar keratoderma, and woolly hair (Naxos disease) to chromosome 17q21, in which the gene for(More)
BACKGROUND The diagnosis of arrhythmogenic right ventricular cardiomyopathy (ARVC) can be challenging because the clinical presentation is highly variable and genetic penetrance is often low. METHODS To determine whether a change in the distribution of desmosomal proteins can be used as a sensitive and specific diagnostic test for ARVC, we performed(More)
OBJECTIVES The purpose of this study was to examine the genotype-phenotype relation with respect to penetrance, age and severity of expression, disease progression and prognosis in a recessively inherited arrhythmogenic right ventricular cardiomyopathy (ARVC). BACKGROUND Naxos disease is a recessively inherited ARVC caused by a mutation in the gene(More)
Naxos disease is a recessive association of arrhythmogenic right ventricular cardiomyopathy (ARVC) with wooly hair and palmoplantar keratoderma or similar skin disorder. The clinical and histopathological spectrum of heart disease, molecular genetics and genotype-phenotype correlation are reviewed in 22 affected families with this cardiocutaneous syndrome(More)
BACKGROUND Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a heart muscle disease of unknown etiology that causes arrhythmias, heart failure, and sudden death. Diagnosis can be difficult, and this hampers investigation of its molecular basis. Forms of ARVC in which gene penetrance and disease expression are greater should facilitate genetic study.(More)
AIMS Recent immunohistochemical studies observed the loss of plakoglobin (PG) from the intercalated disc (ID) as a hallmark of arrhythmogenic right ventricular cardiomyopathy (ARVC), suggesting a final common pathway for this disease. However, the underlying molecular processes are poorly understood. METHODS AND RESULTS We have identified novel mutations(More)
OBJECTIVES We tested the hypothesis that defective interactions between adhesion junctions and the cytoskeleton caused by the plakoglobin mutation in Naxos disease lead to remodeling of gap junctions and altered expression of the major gap junction protein, connexin43. BACKGROUND Naxos disease, a recessive form of arrhythmogenic right ventricular(More)
Arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVC) is a genetically determined heart muscle disorder presenting clinically with even lethal ventricular arrhythmias, particularly in the young and athletes. It is reported familial with recessive and most commonly dominant inheritance. Disease-causing genes are increasingly recognised among(More)