Les pathologies de la grossesse

Résumé du document

Il s'agit d'un support d'exposé de grande qualité en médecine ayant pour objet d'étude les pathologies de la grossesse.

Ce document clair et très bien structuré s'avèrera fort utile pour de nombreux(ses) étudiant(e)s en médecine, biologie, soins infirmiers… et bien entendu tout(e) autre intéressé(e).

Extraits

[...] Their teeth pattern differed in both the order and timing of eruption. Standardised questionnaire assessments which rely on scoring phenotypic similarities suggested the twins were dizygous Zygosity was therefore rechecked by PCR on cells obtained from cheek swabs. Genotypes for eight highly polymorphic tri-, and tetra-nucleotide microsatellite repeat markers were identical, further supporting a diagnosis of monozyosity in 2700 chance of this result in dizygous twins). Although most monozygous twins are phenotypically similar, there are some monozygous pairs who are neither phenotypically nor genotypically identical. [...]

[...] Psychol Med 1997; 27: 191–97. Sackett DL, Richardson WS, Rosenberg Haynes RB. Evidencebased medicine: how to practice and teach EBM. New York: Churchill Livingstone Ustun Sartorius N. Mental illness in general health care: an international study. Chichester: John Wiley Institute of Psychiatry, De Crespigny Park, London SE5 8AF, UK P Goldberg); and Department of Psychiatry, Nagoya City University Medical School, Nagoya 467-8601, Japan The twins Identical differences P aul Gringras 1-year-old male twins attended the Multiple Births Foundation twins clinic for routine developmental review. [...]

[...] Twin zygosity testing for medical purposes. Am J Med Genet 1998; 77: 412–14. [...]

[...] In this case both systems would have led to a false diagnosis of dizygosity. Without the details of 562 these twins' placental histology, or if they belonged to the one third of monozygous twins with a dichorionic separate placenta, they would have been misclassified. Mechanisms for differences in monozygous twins are complex and not fully understood. A wide range of antenatal genetic and environmental influences can cause phenotypic and genotypic divergence.2 A possible mechanism for discordant hair colours in this case might simply have been an unequal allocation of neural crest-derived pigment-cell percursors to the twins when the twinning event occurred. [...]

[...] Due to the placental findings the twins were assumed to be monozygous and no further investigations of zygosity were done. In the clinic the parents' main question concerned the boys' zygosity. The parents pointed out a number of differences between the two which made them doubt that the twins were identical. The twins were of similar w e i g h t s and the same length. They were easily distinguishable because of their different hair colour (figure). Eye colour was the same although the shape of the eyes was different. [...]