2:32 AM
Anonymous
S**x can trigger 'remarkable' responses in women - including altered fertility, immunity, libido, eating and sleep patterns - by the activation of diverse sets of genes, according to a study.
Researchers investigated fruit flies, but say their findings could in principle be akin to responses in many animals - including humans - where sperm and semen is released inside the female’s body during s**x.
Scientists from the University of East Anglia (UEA) studied how female Drosophila melanogaster - or fruit flies - respond to mating.
They discovered that a single protein found in semen generates a wide range of responses in many genes in females, which become apparent at different times and in different parts of the female’s body following mating.
Lead researcher Prof Tracey Chapman, of UEA’s school of Biological Sciences, said: 'It’s already known that seminal fluid proteins transferred from males during mating cause remarkable effects in females - including altered egg laying, feeding, immunity, sleep patterns, water balance and s**xual receptivity.
We tested here the effects of one enigmatic seminal fluid protein - known as the "s**x peptide" - and found it to change the expression of a remarkable array of many genes in females - both across time and in different parts of the body.
'There were significant alterations to genes linked to egg development, early embryogenesis, immunity, nutrient sensing, behaviour and, unexpectedly, phototransduction - or the pathways by which they see.
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