Identification of origins of marker chromosomes using fluorescence in situ hybridization / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To assess the value of fluorescence in situ hybridization (FISH) and bacterial artificial chromosome FISH (BAC-FISH) for the diagnosis for patients with marker chromosomes.</p><p><b>METHODS</b>Sixteen patients with marker chromosomes were analyzed with technologies including GTG-banding, Q-banding, multiplex FISH and BAC-FISH.</p><p><b>RESULTS</b>The marker chromosomes in the 16 patients were verified as der(Y) (2 cases), psu dic(Y) (1 case), psu dic(15) (1 case), dic(15) (1 case), del(Y) (1 case), r(X) (5 cases), i(14 or 22) (2 cases), i(18) (1 case).</p><p><b>CONCLUSION</b>FISH and BAC-FISH can both verify the origin of marker chromosomes and provide accurate information for the diagnosis and treatment of patients.</p>

Molecular and cytogenetic study on 18 cases of amenorrhea: the use of fluorescence in situ hybridization and high resolution-comparative genomic hybridization / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To explore the use of fluorescence in situ hybridization (FISH) and high resolution-comparative genomic hybridization (HR-CGH) techniques in amenorrhea study.</p><p><b>METHODS</b>After routine gynecologic examination, ultrasonography and endocrine examination, 17 cases of primary amenorrhea and 1 case of secondary amenorrhea were analysed by using chromosomal diagnoses including multiplex FISH and HR-CGH analyses.</p><p><b>RESULTS</b>Among 17 cases of primary amenorrhea, 7 revealed a 46,XX karyotype; 10 cases (58.8%) had abnormal karyotype, including 3 cases of 46,XY females, 2 cases of Turner's syndrome with 45,X and 45,X/46,XX, and other 5 cases with abnormal structure of X chromosome (including partial monosomy of X,X isochromosome and X/Y mosaic). The karyotype of the patient with secondary amenorrhea was translocation between X chromosome and euchromosome.</p><p><b>CONCLUSION</b>The using of FISH and HR-CGH can correctly diagnose the patients' karyotypes, and provide absolutely necessarily medical genetic data for clinical diagnosis and therapy.</p>