Some cases of male infertility are due to mutations in the maternal X chromosome that prevent development of viable sperm, according to a study led by researchers at the University of Pittsburgh School of Medicine and the Magee-Womens Research Institute (MWRI). The study was published online today in the New England Journal of Medicine.
Tag: sperm
Caution Greets Claim Human Sperm Grown in Lab
Human sperm cells have been grown in a laboratory in a breakthrough that could lead to a treatment for male infertility, scientists claim. A French firm said it had produced “fully formed” sperm from basic reproduction cells. The research has not yet been published in a peer-reviewed journal, and experts greeted the news with caution. However, if proven, the technique could offer hope to people who cannot have children
How Do Testicles Know When To Stop Making More Sperm?
Every time someone ejaculates, it produces millions of sperm. But the average pair of testicles produces billions of sperm cells over an entire lifetime. Why don’t they create all of their sperm in one go? Answer: Because testicles have a complicated process to avoid running out of sperm and endangering future fertility.
Widow Wins Right to Preserve Dead Husband’s Frozen Sperm
A Canadian widow has won the right to save her dead husband’s sperm from being destroyed by a Canberra fertility clinic.
Things to Know About the Sperm Bank Industry
Sperm banking is a huge industry that has been around for decades but one that is relatively loosely regulated in the U.S. Here are some things to know about the industry.
Pesticide Residue In Fruits And Vegetables Associated With Low Sperm Count
Consumption of fruits and vegetables that contain relatively large amounts of pesticide residue may affect men’s sperm counts and the number of normal-looking sperm they produce, a potential factor in fertility problems, Harvard University researchers reported Monday. The study by researchers at the T.H. Chan School of Public Health, described as the first to link pesticides in fruits and vegetables to reproductive problems, leaves many questions unanswered.
Researchers One Step Closer to Unraveling Complex Processes Crucial to Sperm Development
Researchers are one step closer to unraveling the extraordinarily complex series of processes that leads to an event crucial to human reproduction: the creation of sperm.
Mutation May Cause Early Loss of Sperm Supply
Problems in a gene responsible for producing the protein TAF4b leave mice — and maybe men — unable to sustain sperm production. As embryos, mice lacking the protein failed to develop an adequate number of key cells in the sperm production process and as adults they quickly lost their initial fertility.
Autism, Low IQ Linked to Sperm Mutation in Teen Fathers
Teenage fathers are likelier to have children with health problems because of mutations in their sperm, a study said Wednesday.
Researchers Find Protein Necessary For Fertility Performs Different Roles in Sperm, Eggs
The protein necessary for fertility in both sexes performs distinctly different roles in male and female gametes, according to a groundbreaking study, which included researchers from the University of Georgia College of Veterinary Medicine. Known as BRWD1, the protein controls gene expression in maturing sperm while promoting chromosome condensation and stability in female cells called oocytes, which become eggs.