Search for dissertations about: "Sertoli cell"
Showing result 1 - 5 of 16 swedish dissertations containing the words Sertoli cell.
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1. Paracrine regulation of Sertoli cell proliferation
Abstract : The Sertoli cell is a highly differentiated somatic cell in the seminiferous epithelium of the testis. This cell is of prime importance for both testicular development and spermatogenesis. READ MORE
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2. ENVIRONMENTAL CONTAMINANTS AND SPERM Y:X CHROMOSOME RATIO. Impact of androgen- and dioxin-related effects in vivo and in vitro
Abstract : During the last decades, there has been concern that the environmental contaminants, such as POPs, may contribute to sex ratio changes in offspring of exposed populations. Accidental exposure to TCDD has been shown to be associated with fewer sons in men who were exposed in adolescence or earlier in life. READ MORE
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3. Hormonal and paracrine influences on Leydig cell steroidogenesis
Abstract : Androgen production by Leydig cells is critical for development of the male reproductive organs and for maintaining normal body homeostasis and fertility later in life. Biosynthesis of testosterone is driven by secretion of the gonadotropin, luteinizing hormone (LH) from the pituitary. READ MORE
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4. Developmental and reproductive regulation of NR5A genes in teleosts
Abstract : In mammals sex chromosomes direct and initiate the development of male and female gonads and subsequently secondary sex characteristics. In most vertebrates each individual is pre-destined to either become male or female. READ MORE
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5. Artificial testis to study early gonadal development and germ cell differentiation
Abstract : Studying the early germ cell development is of great significance, as germ cells transfer the genetic material between generations. However, in humans, this type of studies in vivo is not applicable, for obvious ethical reasons. READ MORE