Ultra-sensitive blood test predicts functional outcome in stroke patients

NewsGuard 100/100 Score

An ultra-sensitive blood test that reflects brain damage after acute ischemic stroke - and also predicts functional outcome. This is a discovery that is expected to be of great significance in the future. The findings are described in a study from the University of Gothenburg.

The study, published in the journal Neurology, was conducted by a group of researchers at Sahlgrenska Academy at the University of Gothenburg led by Professors Kaj Blennow and Christina Jern.

Last year, Professor Blennow's research team developed a new blood test to measure a protein, BD-tau (brain-derived tau), which reflects the breakdown of neurons in the central nervous system in Alzheimer's disease. This is a key discovery for a future tool to track and monitor the course of the disease.

The aim of the current study was to investigate whether the same biomarker can also reflect neuronal injury after acute ischemic stroke - the most common form of stroke, caused by oxygen deprivation in the brain as a result of a blood clot.

Higher BD-tau - more unfavorable outcome

The researchers found that higher blood levels of BD-tau during the acute phase of ischemic stroke increased the risk of more severe outcomes after three months in the studied group of more than 800 stroke patients.

The results were independent of the two clinical variables that are considered the best predictors of outcome after ischemic stroke - age and stroke severity - according to the established NIH Stroke Scale. The results were also adjusted for sex and day of blood sampling.

The two first authors of the study are Associate Professor Tara Stanne, stroke researcher at the Department of Laboratory Medicine, and Fernando Gonzalez-Ortiz, doctoral student at the Department of Psychiatry and Neurochemistry, and a medical doctor at the Sahlgrenska University Hospital.

Great potential for clinical implementation in stroke

There are currently no blood-based biomarkers that accurately reflect acute neuronal injury after stroke, or that can be used to predict clinical outcomes in stroke patients."

Fernando Gonzalez-Ortiz, doctoral student at the Department of Psychiatry and Neurochemistry, and medical doctor at the Sahlgrenska University Hospital

"Our paper is the first report of a blood-based biomarker that is truly specific to acute neuronal injury in the brain in ischemic stroke," adds Tara Stanne. "The results indicate that BD-tau functions as a biomarker for most subgroups of ischemic stroke, meaning that it has great potential for future clinical implementation."

The researchers say that more and larger studies are needed to validate the results, as well as studies with repeated blood sampling in order to identify the optimal day for sampling, following the onset of acute stroke, that can predict the clinical outcome.

Journal reference:

Stanne, T. M., et al. (2024). Association of Plasma Brain-Derived Tau With Functional Outcome After Ischemic Stroke. Neurology. doi.org/10.1212/wnl.0000000000209129.


The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of News Medical.
Post a new comment

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.

You might also like...
Study reveals breakthrough in non-invasive detection of endometrial cancer