Results 241 to 250 of about 70,106 (300)

Gonadal tumor development in 46,XX disorders of gonadal development [PDF]

open access: yesEuropean Journal of Endocrinology, 2022
Background Differences/disorders of sex development (DSD) are congenital conditions in which the development of chromosomal, gonadal, or anatomical sex is atypical. Objective The aim of this study is to report the histological characteristics and immunoexpression patterns of gonadal parenchyma in patients with 46,XX testicular and ovotesticular DSD,
Mariana Costanzo   +12 more
openaire   +4 more sources

Sex Determination and Gonadal Development in Mammals [PDF]

open access: yesPhysiological Reviews, 2007
Arguably the most defining moment in our lives is fertilization, the point at which we inherit either an X or a Y chromosome from our father. The profoundly different journeys of male and female life are thus decided by a genetic coin toss. These differences begin to unfold during fetal development, when the Y-chromosomal Sry (“sex-determining region Y”
Wilhelm, D., Palmer, S., Koopman, P.
openaire   +6 more sources

Sex Determination and Gonadal Development [PDF]

open access: yes, 2010
In mammals, sex determination is a result of chromosomal constitution determined at fertilization, with females harboring XX and males XY sex chromosomes. The apparent simplicity of this system belies the intricate genetic and cellular interactions that direct differentiation of the bipotential gonadal primordium into either a testis or an ovary. These
Combes, Alexander   +2 more
openaire   +5 more sources

Disorders of Gonadal Development

Seminars in Reproductive Medicine, 2002
The molecular mechanisms of gonadal development are a complex process, which involves the tightly regulated differentiation of a bipotential embryonic gonad into either testes or ovary. Once this has occurred, the phenotypic and gonadal sex of an individual has been genetically determined. This process, however, may not always be so straightforward. By
Phoebe, Dewing   +2 more
openaire   +2 more sources

Signaling at the crossroads of gonad development

Trends in Endocrinology and Metabolism, 2005
In mammals, the gonads arise as bipotential primordia that are capable of developing as either testes or ovaries. Expression of the Y-linked gene Sry in the XY gonad initiates testis differentiation; in the absence of Sry, ovarian pathways prevail. Although the molecular targets of SRY are not known, many of the early cellular and morphological events ...
Andrea J, Ross, Blanche, Capel
openaire   +2 more sources

Gonadal Development

2014
The commitment of the embryonic gonad towards the male or female fate is a sequential and complex developmental process. The sex-independent growth and development of the adrenogonadal primordium into the bipotential gonadal ridge is committed to the formation of testis in the presence of the SRY gene on the Y chromosome. SRY upregulates the expression
Angela K, Lucas-Herald, Anu, Bashamboo
openaire   +2 more sources

GENE INTERACTIONS IN GONADAL DEVELOPMENT

Annual Review of Physiology, 1999
▪ Abstract  The acquisition of a sexually dimorphic phenotype is a critical event in mammalian development. Although the maturation of sexual function and reproduction occurs after birth, essentially all of the critical developmental steps take place during embryogenesis.
Parker KL, Schedl A, Schimmer BP
openaire   +3 more sources

Intrauterine Gonadal Development

Fertility and Sterility, 1976
This review article summarizes the intrauterine gonadal development and differentiation of both male and female human embryos and fetuses. It describes in detail (1) the organization of the indifferent gonad and its seeding by the extra-gonadal germ cells, (2) the development of the duct systems before sex differentiation, and (3) the controlling ...
openaire   +2 more sources

Gonadal development in hermaphrodite mice

In Vitro, 1979
The genetic background and morphology of spontaneous mosaic hermaphrodites of mice have been described.
openaire   +2 more sources

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