By Dr. Lynn Webster, PNN Columnist

People in pain rely on scientific advances to find safer, more effective alternatives to opioids. Animal research is key to many of our advances in drug development.

But a recent announcement from the Environmental Protection Agency threatens to change that -- by inhibiting science’s ability to replace opioids and create new life-saving pain interventions.

EPA administrator Andrew Wheeler announced in September the agency's decision to "significantly curtail its reliance on the use of mammals in toxicological studies conducted to determine whether environmental contaminants have an adverse impact on human health."

The EPA plans to reduce funding for most mammal studies by 30% by 2025 and eliminate them altogether by 2035.

The agency also announced that five universities would receive $4.25 million in federal funding to develop alternatives to reduce or replace the use of animals in research.

Ostensibly, Wheeler worries about the potential mistreatment of animals used in testing. But Natural Resources Defense Council (NRDC) scientist Jennifer Sass believes he may be politically motivated.

“The Trump administration appears to be working on behalf of the chemical industry and not the public,” Sass said in an NPR interview.

Most likely, the American Chemistry Council, which represents chemical companies, would prefer to eliminate mammal studies that could prove the toxicity of their products. Wheeler, however, claims he hasn't talked to "a single chemical company about this."

According to The New York Times, the American Lung Association, the American Heart Association, and the American Medical Association disagree with Wheeler's strategy. Lab-grown cells and computer modeling can reduce the need for animal testing. But Penelope Fenner-Crisp, a former senior official at the EPA, believes 2035 may be too soon to ban all animal studies.  

"There's currently no substitute for [testing] some of the more complex and sophisticated toxicities, such as the effect of chemicals on animals' reproductive systems," she said.

The NRDC, an environmental advocacy group, also opposes the EPA's plan to ban animal testing on the grounds that it could make it harder to identify toxic chemicals and protect human health.

Animal research has played a key role in developing many new technologies, including MRIs, ultrasounds, CT scans, and new surgical techniques. It has also played an integral role in the development of vaccines, pain relievers and other medications, as well as life-saving emergency care.

“Virtually everything a doctor, nurse, veterinarian, veterinary technician, paramedic, or pharmacist can give the injured or sick was made possible by animal research," says Dr. Henry Friedman, a neuro-oncologist who leads the opposition to the EPA decision.

Dr. Friedman says sophisticated computers can be helpful in many areas of scientific research, but they "can't predict everything a new drug will do once inside you." He also maintains that laboratory animals are treated humanely under strict guidelines.

Speaking of Research, an international advocacy group that supports the use of animal research, believes the EPA's plan endangers human, animal and environmental health.

"This directive flies in the face of the EPA’s mission to 'protect human health and the environment' and 'to ensure that national efforts to reduce environmental risks are based on the best available scientific information.' Animal-based research and testing is critical for understanding how new chemicals and environmental substances affect human and non-human animals," the organization said in a statement.

Many of us in the scientific community oppose the EPA’s decision because it could slow drug development and threaten our ability to find safer and more effective treatments for pain, addiction and other diseases. If the EPA decision is sustained, it will be a major obstacle to the advancement of medical science.

Lynn R. Webster, MD, is a vice president of scientific affairs for PRA Health Sciences and consults with the pharmaceutical industry. He is the author of the award-winning book, “The Painful Truth,” and co-producer of the documentary, “It Hurts Until You Die.”

You can find Lynn on Twitter: @LynnRWebsterMD.

Opinions expressed here are those of the author alone and do not reflect the views or policy of PRA Health Sciences or Pain News Network.