gene editing

Genetic Engineering For All: The Last Great Frontier of Human Freedom

OPINION ESSAY Bioethics
Genetic Engineering For All: The Last Great Frontier of Human Freedom

Josiah Zayner in his home lab.

(Courtesy Zayner)


Keep Reading Keep Reading
Josiah Zayner
Dr. Josiah Zayner is a biohacker and CEO who is constantly pushing the boundaries of science outside traditional environments including human genetic engineering. After his Ph.D., he worked at NASA's Synthetic Biology program, genetically engineering bacteria to help terraform Mars. He left NASA to found The ODIN, a company that makes genetic engineering available to consumers at home. His work has been featured in Time, Scientific American, Le Monde, Businessweek, The Guardian and NPR, among many others. He enjoys whiskey and Red Bull, sometimes together.
drugs

Questions remain about new drug for hot flashes

Feature Story Biotech
Questions remain about new drug for hot flashes

In May, a new drug, Fezolinetant, was approved by the FDA to treat hot flashes associated with menopause.

Adobe Stock

Vascomotor symptoms (VMS) is the medical term for hot flashes associated with menopause. You are going to hear a lot more about it because a company has a new drug to sell. Here is what you need to know.

Menopause marks the end of a woman’s reproductive capacity. Normal hormonal production associated with that monthly cycle becomes erratic and finally ceases. For some women the transition can be relatively brief with only modest symptoms, while for others the body's “thermostat” in the brain is disrupted and they experience hot flashes and other symptoms that can disrupt daily activity. Lifestyle modification and drugs such as hormone therapy can provide some relief, but women at risk for cancer are advised not to use them and other women choose not to do so.

Fezolinetant, sold by Astellas Pharma Inc. under the product name Veozah™, was approved by the Food and Drug Administration (FDA) on May 12 to treat hot flashes associated with menopause. It is the first in a new class of drugs called neurokinin 3 receptor antagonists, which block specific neurons in the brain “thermostat” that trigger VMS. It does not appear to affect other symptoms of menopause. As with many drugs targeting a brain cell receptor, it must be taken continuously for a few days to build up a good therapeutic response, rather than working as a rescue product such as an asthma inhaler to immediately treat that condition.

Keep Reading Keep Reading
Bob Roehr
Bob Roehr is a biomedical journalist based in Washington, DC. Over the last twenty-five years he has written extensively for The BMJ, Scientific American, PNAS, Proto, and myriad other publications. He is primarily interested in HIV, infectious disease, immunology, and how growing knowledge of the microbiome is changing our understanding of health and disease. He is working on a book about the ways the body can at least partially control HIV and how that has influenced (or not) the search for a treatment and cure.
testing

This breath test can detect liver disease earlier

Health Tech
This breath test can detect liver disease earlier

A company in England has made a test that picks out the compounds from breath that reveal if people have liver disease.

Adobe Stock

Every year, around two million people worldwide die of liver disease. While some people inherit the disease, it’s most commonly caused by hepatitis, obesity and alcoholism. These underlying conditions kill liver cells, causing scar tissue to form until eventually the liver cannot function properly. Since 1979, deaths due to liver disease have increased by 400 percent.

The sooner the disease is detected, the more effective treatment can be. But once symptoms appear, the liver is already damaged. Around 50 percent of cases are diagnosed only after the disease has reached the final stages, when treatment is largely ineffective.

To address this problem, Owlstone Medical, a biotech company in England, has developed a breath test that can detect liver disease earlier than conventional approaches. Human breath contains volatile organic compounds (VOCs) that change in the first stages of liver disease. Owlstone’s breath test can reliably collect, store and detect VOCs, while picking out the specific compounds that reveal liver disease.

Keep Reading Keep Reading
Sarah Philip
Sarah Philip is a London-based freelance journalist who writes about science, film and TV. You can follow her on Twitter @sarahph1lip.