O declínio da fertilidade das mulheres começa, normalmente, a partir dos 30 anos, o que coloca desafios à conceção na meia-idade. Os cientistas descobriram um mecanismo que acelera o envelhecimento dos ovários e, pelo menos nos ratinhos, identificaram um método para o desacelerar, aumentando potencialmente a fertilidade numa fase posterior da vida.
Crédito: https://unsplash.com/photos/1NvNQIYToicOs espermatozoides desempenham um papel fundamental na criação de uma nova vida, contribuindo com metade do material genético necessário para a fertilização. Os pesquisadores da Universidade de Michigan estão agora se aprofundando nos detalhes de nível molecular da formação do esperma, concentrando-se nas protaminas - um grupo exclusivo de proteínas que empacotam o...
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