Sly Saint
Senior Member (Voting Rights)
Cancer is a challenging enough diagnosis, but many patients are dealt a second blow, even as they heal: "chemo brain."
Also called "brain fog," this mix of cognitive issues - memory problems, struggling to find words, an inability to concentrate - affects up to three-in-four cancer patients, according to multiple studies. For many, the effects last years beyond cancer treatment.
A new study offers new models for studying causes of chemo brain and points to the effects of chemotherapy drugs on the brain's lymphatic system, which is a network of tiny vessels in the brain's protective membranes that help remove waste and transport immune cells. The study was published Oct. 13 in Communications Biology.
"There's compounding evidence now that these meningeal lymphatics are involved in cognitive issues, including Alzheimer's disease and traumatic brain injury, too. Women are affected by chemo brain, or brain fog, much more than men when treated by very common chemotherapies, such as those used on breast cancer patients on a regular basis."
Jennifer Munson, co-corresponding author, professor and director of the Fralin Biomedical Research Institute at VTC's Cancer Research Center in Roanok
Taken together, Munson said, the results suggest chemo brain could result from poor lymphatic-system drainage in response to chemotherapy.
"That could potentially account for some of these memory deficits, which is similar to what we have seen in Alzheimer's disease," Munson said.
"The first step is knowing," she said. "And now the hope is to figure out how to help. Could delivering something pharmaceutically, such as a protein, alleviate the problem and not interfere with the chemotherapy? We know of other things that affect flow in the brain, as well, such as better sleep and exercise."
Munson is also interested in exploring gender differences in chemo brain prevalence.
"Lymphatic diseases in general affect women more than men," she said. "We are extremely interested in trying to understand that difference and why that difference might exist."
Study offers new models for understanding the causes of chemo brain
Cancer is a challenging enough diagnosis, but many patients are dealt a second blow, even as they heal: "chemo brain."