Gonadal dysgenesis
نویسندگان
چکیده
Disorders of sex development (DSD), previously referred to as intersex disorders, comprise a variety of congenital diseases with anomalies of the sex chromosome, the gonads, the reproductive ducts and the genitalia. DSD is loosely classified into four groups on the basis of histological features of the gonadal tissue: XX-DSD with two ovaries (female pseudohermaphroditism), XY-DSD with two testicles (male pseudohermaphroditism), ovotesticular DSD with both ovarian and testicular tissue (true hermaphroditism) and gonadal dysgenesis.
منابع مشابه
The Coexistence of Gonadal Dysgenesis With Mayer-rokitansky-küster-hauser Syndrome, and Dandy-Walker Variant
Background: Gonadal dysgenesis, the most common cause of primary amenorrhea, is characterized by absent or underdeveloped ovaries. Although the coexistence of gonadal dysgenesis and Mayer-Rokitansky-Küster-Hauser (MRKH) has been reported, it is still quite infrequent. To the extent that authors searched, just one study reported the association between Rokitansky sequence and Dandy-Walker malfor...
متن کاملBalanced Reciprocal Translocation t(X;1) in a Girl with Tall Stature and Primary Amenorrhea
AbstractChromosomal translocations constitute one of the most important, yet uncommon, causes of primary amenorrhea and gonadal dysgenesis. Although X-autosome translocations are frequently associated with streak gonads and clinical features of the Turner syndrome, the majority of X-autosome carriers may present with a variable phenotype, developmental delay, and recognizable X-linked syndrome ...
متن کاملThe X linked recessive form of XY gonadal dysgenesis with a high incidence of gonadal germ cell tumours: clinical and genetic studies.
Five phenotypic females in one family had the genotype 46,XY and all had gonadal germ cell tumours. Studies of the family pedigree suggest that this form of XY gonadal dysgenesis is inherited in an X linked recessive manner. G banding of elongated metaphase chromosomes from two subjects with XY gonadal dysgenesis and a female carrier showed no aberrations of the X chromosome. The titres of H-Y ...
متن کاملMultigeneration Inheritance through Fertile XX Carriers of an NR0B1 (DAX1) Locus Duplication in a Kindred of Females with Isolated XY Gonadal Dysgenesis
A 160 kb minimal common region in Xp21 has been determined as the cause of XY gonadal dysgenesis, if duplicated. The region contains the MAGEB genes and the NR0B1 gene; this is the candidate for gonadal dysgenesis if overexpressed. Most patients present gonadal dysgenesis within a more complex phenotype. However, few independent cases have recently been described presenting with isolated XY gon...
متن کاملFamilial XY gonadal dysgenesis.
Gonadal dysgenesis is a condition characterized by streak gonads in subjects who present the phenotypic appearance of females. In pure gonadal dysgenesis, unlike Turner's syndrome, no associated somatic anomalies are found; the adult is of normal or above average stature and may have eunuchoidal proportions (Sohval, 1965). The term 'XY gonadal dysgenesis' refers to patients with pure gonadal dy...
متن کاملComparison of adult height between patients with XX and XY gonadal dysgenesis: support for a Y specific growth gene(s).
Adult height was compared between published cases of patients with XX gonadal dysgenesis (XXGD) and those with XY gonadal dysgenesis (XYGD). The mean adult height of XYGD patients (171.0 cm (SD 7.8), n = 27) was significantly greater than that of XXGD patients (164.4 cm (7.7), n = 27) (p less than 0.01). This finding supports the existence of a Y specific growth gene(s) which promotes statural ...
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