1988
DOI: 10.1007/bf00283735
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A mosaic 45,X/46,X,4(?) karyotype investigated with X and Y centromere-specific probes using a non-autoradiographic in situ hybridization technique

Abstract: The sex-chromosomal origin of the ring chromosome in a pre-pubertal non-virilized female patient presenting with a 45,X/46,X,r(?) karyotype could not be resolved by conventional cytogenetic (including G11) methods. Non-autoradiographic in situ hybridization of biotinylated X and Y centromere-specific alphoid repetitive sequence probes unequivocally and rapidly identified the ring to be of X origin.

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Cited by 40 publications
(22 citation statements)
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“…The origin of such marker chromosomes often cannot be deduced from banding patterns. Recently, Crolla and Llerena (1988) have demonstrated the X-chromosomal origin of a ring chromosome using in situ hybridization of biotinylated X and Y centromer-specific probes. Our results indicate that CISS-hybridization with library DNA from sorted human gonosomes can be used to investigate whether the whole marker chromosome is constituted from gonosomal material.…”
Section: Discussionmentioning
confidence: 99%
“…The origin of such marker chromosomes often cannot be deduced from banding patterns. Recently, Crolla and Llerena (1988) have demonstrated the X-chromosomal origin of a ring chromosome using in situ hybridization of biotinylated X and Y centromer-specific probes. Our results indicate that CISS-hybridization with library DNA from sorted human gonosomes can be used to investigate whether the whole marker chromosome is constituted from gonosomal material.…”
Section: Discussionmentioning
confidence: 99%
“…Introduced to clinical genetics, FISH has been successfully used for determining the origin of marker chromosomes (Crolla and Llerena, 1988;Wullich et al 1991), for the detection of aneuploidy (Pinkel et al, 1986), and for scoring large numbers of cells in cases of chromosome mosaicism (Bartsch and Schwin ger, 1991). Various tissues have been used for both prenatal and postnatal analyses, including cells from amniotic fluid, lymphocytes, and skin fibroblasts.…”
Section: Resultsmentioning
confidence: 99%
“…O emprego da sonda wcp afastou a possibilidade de uma translocação entre as regiões justacentroméricas de X e 17 pela ausência de material de X no cromossomo 17. A possibilidade de hibridação cruzada entre regiões centroméricas do X e autossomos já foi citada na literatura por Crolla & Llerena (51). Em estudo sobre mosaicismo de anomalias numéricas e estruturais do cromossomo X, estes autores relataram que 10% das metáfases hibridadas com sondas alfa centroméricas de X mostravam pequenas hibridações cruzadas para os centrômeros dos cromossomos 11 e 17.…”
Section: Arq Bras Endocrinol Metab Vol 47 Nº 6 Dezembro 2003unclassified
“…Tem sido descrita uma variabilidade clínica nas portadoras de anel de X. Geralmente o diagnóstico é tardio, como aconteceu na nossa paciente, porque estão ausentes os sinais clínicos característicos como linfedema congêni-to, pescoço curto e largo e infantilismo sexual (51)(52)(53). SLS teve desenvolvimento motor normal sem dificuldade de escolaridade.…”
Section: Arq Bras Endocrinol Metab Vol 47 Nº 6 Dezembro 2003unclassified
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