Spermatogenesis and folliculogenesis involve cell–cell interactions and gene expression
orchestrated by luteinizing hormone (LH) and follicle-stimulating hormone (FSH). FSH …

Spermatogenesis is the process by which a single spermatogonium develops into 256
spermatozoa, one of which will fertilize the ovum. Since the 1950s when the stages of the …

Using molecular, cellular, and genetic approaches, recent studies examining the role of the
bone morphogenetic protein (BMP) family of growth factors in the reproductive system have …

The high incidence of low sperm counts in young (European) men and evidence for
declining sperm counts in recent decades mean that the environmental/lifestyle impact on …

GnRH and its analogs are used extensively for the treatment of hormone-dependent
diseases and assisted reproductive techniques. They also have potential as novel …

Bisphenol A (BPA) represents the main chemical monomer of epoxy resins and
polycarbonate plastics. The environmental presence of BPA is widespread, and it can easily …

Androgens are potent drugs requiring prescription for valid medical indications but are
misused for invalid, unproven, or off-label reasons as well as being abused without …

Steady progress in contraception research has been achieved over the past 50 years.
Hormonal and nonhormonal modern contraceptives have improved women's lives by …

'Classical'genomic progesterone receptors appear relatively late in phylogenesis, ie it is only
in birds and mammals that they are detectable. In the different species, they mediate …

Background Hormonal methods for safe, reliable, and reversible contraception based on the
suppression of spermatogenesis could soon become available. We have investigated the …