When Michael and Sandra Friedlander first came to the Virginia-Maryland College of Veterinary Medicine three years ago with their dog, Grayton, they learned some bad news: Grayton had nasal adenocarcinoma, a form of cancer with a short life expectancy.
“Most dogs with this form of cancer are with their owners no more than a few months after the diagnosis, but here Grayton is three years later,” said Michael Friedlander, who is the executive director of the Virginia Tech Carilion Research Institute and senior dean at the Virginia Tech Carilion School of Medicine.
No stranger to medical research, Friedlander was referred by Veterinary Teaching Hospital clinicians to an experimental treatment at the University of Florida called stereotactic radiation therapy, which delivers precise, high dosages of radiation to a tumor and can only be performed once.
“That shrunk the tumor down to almost nothing,” said Friedlander, who is also the associate provost for health sciences at Virginia Tech. “We knew when Grayton had the procedure that we couldn’t do it again, but now the cancer is back.”
Today, the 11-year-old Labradoodle is the first patient at the Virginia-Maryland College of Veterinary Medicine in a new clinical trial that is testing the use of gold nanoparticles and a targeted laser treatment for solid tumors in dogs and cats. The study is one of several on new treatments for client-owned companion animals at the college. In January, the college established the Veterinary Clinical Research Office to help facilitate this work.
“Clinical research at the veterinary college involves both primary research focused on advancing the treatment and diagnosis of veterinary diseases and translational research in which spontaneous diseases in animals can be used as models of human disease,” said Dr. Greg Daniel, head of the Department of Small Animal Clinical Sciences. “In the latter situation, we can provide our companion animal patients with treatment and diagnostic options that are not yet available in mainstream human medicine.”
Although medical researchers have tested gold nanoparticles with targeted laser treatments on human patients with some success, the treatment is still new to both human and veterinary medicine. The college is one of four current veterinary schools around the country testing the AuroLase therapy developed by Nanospectra Biosciences Inc., a startup company based in Houston, Texas. The others are Texas A&M University, the University of Wisconsin-Madison, and the University of Georgia.
Dr. Nick Dervisis, assistant professor of oncology in the Department of Small Animal Clinical Sciences, is leading the Nanospectra-funded study. Following a rhinoscopy performed on Grayton by Dr. David Grant, associate professor of internal medicine, Dervisis began the one-time, experimental therapy.
“The treatment involves two phases,” Dervisis said. “First, we infuse the patient with the gold nanoparticles. Although the nanoparticles distribute throughout the body, they tend to concentrate around blood vessels associated with tumors. Within 36 hours, they have cleared the bloodstream except for tumors.
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