Sperm donation laws vary by country. Most countries have laws to cover sperm donations which, for example, place limits on how many children a sperm donor may give rise to, or which limit or prohibit the use of donor semen after the donor has died, or payment to sperm donors. The present study shows that tachykinins and the tachykinin-degrading enzymes NEP and NEP2 are present in human spermatozoa and participate in the regulation of sperm motility. These data support a role for the tachykinin system in the regulation of sperm function.Cited by: 15.
May 15, 2010 · Sperm specificity and restricted species distributions are characteristic of some new genes in Drosophila species (Dorus et al. 2008). Furthermore, it appears that KPL was inserted recently in the genomic region adjacent to ARI14 (Supplemental Fig. S10), suggesting that regulation of ARI14 via a KPL-ARI14 nat-siRNA is a novel evolutionary feature.Cited by: 140. May 30, 2017 · The calcium channel of sperm—CatSper—is vital for male fertility. CatSper is activated by the hormone progesterone, but its pharmacological profile is not well studied. By exploring steroid selectivity of CatSper activation, we found one additional agonist—pregnenolone sulfate—and the two plant-derived inhibitors pristimerin and lupeol.Cited by: 20.
What Policies Govern Sperm Donation? Sperm banks are regulated at the National level by the American Association of Tissue Banks (AATB). At the state level, sperm banks are regulated as semen banks and or tissue banks/laboratories by the state department in each state.