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Clinical manifestations and gene mutations of a Chinese family with MYH9-related syndrome / 中国当代儿科杂志
Chinese Journal of Contemporary Pediatrics ; (12): 678-682, 2012.
Article in Chinese | WPRIM | ID: wpr-353890
ABSTRACT
<p><b>OBJECTIVE</b>To explore the method for early diagnosis and pathogenesis of MYH9-related syndrome through analysis of the clinical manifestation and gene mutation of a Chinese family with MYH9-related syndrome.</p><p><b>METHODS</b>Peripheral blood samples were collected from a three-generation Chinese family with MYH9-related syndrome (11 individuals, including 3 patients) and 100 healthy individuals. Polymerase chain reaction (PCR) amplification and direct sequencing of DNA were performed to analyze mutations of MYH9 gene.</p><p><b>RESULTS</b>Thrombocytopenia, increased volume of platelet, and granulocyte inclusion bodies were found in the patients with MYH9-related syndrome via a peripheral blood test. A missense mutation of a base pair (G-A) in exon 30 was revealed by PCR amplification and direct sequencing of MYH9 of the proband. That lead to Asp-Asn substitution at position 1424 (D1424N mutation). The mutation was the same as in other patients with MYH9-related syndrome. It was not found in healthy people from the Chinese family or in the other 100 healthy individuals.</p><p><b>CONCLUSIONS</b>Patients with MYH9-related syndrome show diverse symptoms. Mutation of MYH9 gene may be the molecular mechanism of MYH9-related syndrome, and D1424N mutation of MYH9 has not been reported in Chinese people. Early diagnosis of MYH9-related syndrome can be carried out by investigating family history and making early examinations.</p>
Subject(s)
Full text: Available Index: WPRIM (Western Pacific) Main subject: Thrombocytopenia / Myosin Heavy Chains / Molecular Motor Proteins / Asian People / Genetics / Mutation Type of study: Screening study Limits: Adult / Aged / Child, preschool / Female / Humans Language: Chinese Journal: Chinese Journal of Contemporary Pediatrics Year: 2012 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Thrombocytopenia / Myosin Heavy Chains / Molecular Motor Proteins / Asian People / Genetics / Mutation Type of study: Screening study Limits: Adult / Aged / Child, preschool / Female / Humans Language: Chinese Journal: Chinese Journal of Contemporary Pediatrics Year: 2012 Type: Article