Chromosomal markers, a challenge in contemporary genetics

Authors

  • Dariana Cristina Espinosa Álvarez Centro Provincial de Genética Médica.
  • Dorelis Guerrero Jordán Centro Provincial de Genética Médica.
  • Oneida Fernández Castillo Hospital General Universitario Carlos Manuel de Céspedes.

Abstract

The chromosome marker is a small chromosomal indeterminate fragment that we can find at the time of performing a karyotype. It was received a sample of amniotic liquid of a patient remitted for advanced maternal age. The amniocentesis was performed after the 17th week of gestation. The sample obtained was cultured and it was processed according to the standardized techniques used in the laboratory. As a result of the prenatal citogenetic diagnostic it was evidenced a marker of unknown origin: 47, XY, + mar. The chromosomal study of the mother evidenced a pericentric investment of the chromosome 9, whereas the chromosomes of the father were normal, then it was considered again. Both parents were informed about the results and previous genetic advices and they decided to interrupt the pregnancy. The anatomopathologic study confirmed that it was a masculine fetus with macroglossia and low implantation of the ears.

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Author Biographies

Dariana Cristina Espinosa Álvarez, Centro Provincial de Genética Médica.

Licenciada en tecnología de la salud en Laboratorio Clínico.

Dorelis Guerrero Jordán, Centro Provincial de Genética Médica.

Licenciada en tecnología de la salud en Microbiología.

Oneida Fernández Castillo, Hospital General Universitario Carlos Manuel de Céspedes.

Licenciada en tecnología de la salud en Laboratorio Clínico.

References

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2.Dorado M, Rodríguez A, Hebles M, Sanchez P, Migueles B, González M. et al. Cariotipo 47, XY, + mar e implicaciones en la esterilidad. ASEBIR [Internet]. 2008 [Citado 2014-05-29]; 13(2): 8-9. Disponible en: http://bddoc.csic.es:8080/detalles.html?id=199687&bd=ICYT&tabla=docu.

3.Hernando Davalillo C. Caracterización de anomalías cromosómicas en diagnóstico prenatal y postnatal mediante técnicas de citogenética molecular. [Tesis].Barcelona: Universitat Autònoma de Barcelona; 2005. [Citado 2014-05-29]. Disponible en: http://www.tdx.cat/handle/10803/3761.

4.Castillo Taucher S, Fuentes AM, Paulos A, Pardo A. Múltiple FISH y múltiple BAND: técnicas de citogenética molecular en cinco casos. Rev. méd. Chile [Internet]. 2002 [Citado 2014-05-29]; 130(5): Disponible en: http://www.scielo.cl/scielo.php?pid=S0034-98872002000500005&script=sci_arttext.

5.Rojas BI. Principios del Asesoramiento Genético. La Habana: Conferencias CNGM; 2001.

Published

2014-01-01

How to Cite

1.
Espinosa Álvarez DC, Guerrero Jordán D, Fernández Castillo O. Chromosomal markers, a challenge in contemporary genetics. RM [Internet]. 2014 Jan. 1 [cited 2025 Jun. 8];18(1):173-9. Available from: https://revmultimed.sld.cu/index.php/mtm/article/view/31

Issue

Section

CASOS CLÍNICOS