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Belgian researchers assessed 31 young adults who had undergone chemotherapy. They were at an average age of slightly over 6 when they had the treatment. The researchers compared them with a control group of young adults who hadn't received chemotherapy.
"Tests that require quick switching between tasks or remembering new information for a short amount of time were clearly more difficult for former cancer patients. The developmental stage of the brain at the start of the cancer treatment probably plays a decisive role," said Iris Elens, a psychiatrist in training, and Rudi D'Hooge, a professor at the University of Leuven.
The researchers also measured levels of protein called p-Tau in the patients' brain fluid. The protein is part of the internal structure of nerve cells.
"Our team collected samples of brain fluid during the cancer treatment. We analysed the p-Tau levels to measure the damage to the brain cells. We found that high concentrations of p-Tau predict cognitive problems at a later age," D'Hooge said.
"If we systematically measure these p-Tau levels in the future we can offer specific help to children with high values. With early coaching aimed at the most relevant functions we can prevent problems that would otherwise manifest 10 to 15 years after the treatment," Elens said.
The study was published June 14 in the Journal of the National Cancer Institute.
-- Robert Preidt
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