Fibrillin-1 gene intron 56 polymorphism in Turkish children with mitral valve prolapse. 2010

Osman Ozdemir, and Rana Olgunturk, and Kadri Karaer, and Mehmet Ali Ergun, and Fatma Sedef Tunaoglu, and Serdar Kula, and Ferda Emriye Percin
Department of Paediatric Cardiology, Kecioren Training and Research Hospital, Ardahan Sokak No. 1, Kecioren, Ankara, Turkey. pedkard@gmail.com

OBJECTIVE Mitral valvar prolapse is the most common anomaly of the mitral valve apparatus throughout childhood. Fibrillin is one of the structural components of the elastin-associated microfibrils found in the mitral valve. A case-controlled study has performed to investigate the relationship between fibrillin 1 gene intron 56 polymorphism and risk of mitral valvar prolapse in Turkish children. METHODS A total of 77 patients with mitral valvar prolapse diagnosed by clinical evaluation and echocardiography and 89 normal children of same age and sex were studied. The fibrillin-1 gene intron 56 polymorphism was identified by the polymerase chain reaction-based restriction analysis. RESULTS There was a significant difference in the distribution of fibrillin-1 gene intron 56 genotypes (p = 0.0001) and allelic frequency (p = 0.0001) between the cases and the controls. CONCLUSIONS Patients with mitral valvar prolapse have higher frequencies of fibrillin-1 gene intron 56 GC genotypes. Healthy children have higher frequencies of fibrillin-1 gene intron 56 CC genotypes. We speculate that the higher frequency of fibrillin-1 gene intron 56 G-allele increases the risk of mitral valvar prolapse.

UI MeSH Term Description Entries
D008297 Male Males
D008840 Microfilament Proteins Monomeric subunits of primarily globular ACTIN and found in the cytoplasmic matrix of almost all cells. They are often associated with microtubules and may play a role in cytoskeletal function and/or mediate movement of the cell or the organelles within the cell. Actin Binding Protein,Actin-Binding Protein,Actin-Binding Proteins,Microfilament Protein,Actin Binding Proteins,Binding Protein, Actin,Protein, Actin Binding,Protein, Actin-Binding,Protein, Microfilament,Proteins, Actin-Binding,Proteins, Microfilament
D008945 Mitral Valve Prolapse Abnormal protrusion or billowing of one or both of the leaflets of MITRAL VALVE into the LEFT ATRIUM during SYSTOLE. This allows the backflow of blood into left atrium leading to MITRAL VALVE INSUFFICIENCY; SYSTOLIC MURMURS; or CARDIAC ARRHYTHMIA. Floppy Mitral Valve,Mitral Click-Murmur Syndrome,Systolic Click-Murmur Syndrome,Click-Murmur Syndrome,Mitral Valve Prolapse Syndrome,Prolapsed Mitral Valve,Click Murmur Syndrome,Click-Murmur Syndrome, Mitral,Click-Murmur Syndrome, Systolic,Click-Murmur Syndromes,Floppy Mitral Valves,Mitral Click Murmur Syndrome,Mitral Valve Prolapses,Mitral Valve, Floppy,Mitral Valve, Prolapsed,Mitral Valves, Floppy,Mitral Valves, Prolapsed,Prolapse, Mitral Valve,Prolapsed Mitral Valves,Prolapses, Mitral Valve,Syndrome, Click-Murmur,Syndrome, Mitral Click-Murmur,Syndrome, Systolic Click-Murmur,Syndromes, Click-Murmur,Systolic Click Murmur Syndrome,Valve Prolapse, Mitral,Valve Prolapses, Mitral,Valve, Prolapsed Mitral,Valves, Prolapsed Mitral
D011110 Polymorphism, Genetic The regular and simultaneous occurrence in a single interbreeding population of two or more discontinuous genotypes. The concept includes differences in genotypes ranging in size from a single nucleotide site (POLYMORPHISM, SINGLE NUCLEOTIDE) to large nucleotide sequences visible at a chromosomal level. Gene Polymorphism,Genetic Polymorphism,Polymorphism (Genetics),Genetic Polymorphisms,Gene Polymorphisms,Polymorphism, Gene,Polymorphisms (Genetics),Polymorphisms, Gene,Polymorphisms, Genetic
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D005260 Female Females
D005787 Gene Frequency The proportion of one particular in the total of all ALLELES for one genetic locus in a breeding POPULATION. Allele Frequency,Genetic Equilibrium,Equilibrium, Genetic,Allele Frequencies,Frequencies, Allele,Frequencies, Gene,Frequency, Allele,Frequency, Gene,Gene Frequencies
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000071837 Fibrillins A family of extracellular matrix glycoproteins that is structurally similar to LATENT TGF-BETA BINDING PROTEINS, but contain additional TGF-beta binding domains, in addition to unique domains at their N and C-terminals. Fibrillins assemble into 10-12 nm MICROFIBRILS that function in a variety of cell interactions with the EXTRACELLULAR MATRIX and developmental processes such as ELASTIC TISSUE maintenance and assembly, and the targeting of growth factors to the extracellular matrix. Fibrillin
D000071838 Fibrillin-1 A fibrillin (FBN1) that functions as a structural support protein for MICROFIBRILS. It also regulates the maturation of OSTEOBLASTS by controlling the availability and concentration of TGF-BETA and BONE MORPHOGENETIC PROTEINS. Mutations in the FBN1 gene are associated with MARFAN SYNDROME. Profibrillin 1,Profibrillin-1,Fibrillin 1

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