Wagner S. Brum
@wagnersbrum
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MD-PhD student working with Alzheimer's disease biomarkers and their clinical interpretation at @goteborgsuni @ufrgsnoticias @zimmerneurolab
Gothenburg, Sweden
Joined August 2018
Out @NatureAging 🚨 We propose a cost-effective 2-step workflow to determine Aβ-status in memory clinics: 🩸 pTau217-based risk stratification (step 1; >90% accuracy) followed by confirmatory CSF/PET (step 2) only in uncertain pts (~30%). @OskarHansson9
https://t.co/YouBuikZiv
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Do p-tau217 levels rise without amyloid or tau aggregates? 🐻 In our Acta Neuropathologica paper, we show that 🩸 p-tau217 increases ~300% during bear hibernation, while hibernating hamsters also show ⬆️ p-tau but no changes in MTBR tau. https://t.co/8QgRj9hfR9
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Happy to see this massive collaboration out covering 12 different cohorts including almost 3,000 cognitively unimpaired individuals. Plasma p-tau217 can be used to detect preclinical Alzheimer’s, but positive predictive values increase if +ve results are confirmed with CSF or PET
🚨Paper alert🚨 New publication in @JAMANeuro led by @gesalbla. In a multicentric study, we examined the clinical utility to assess preclinical #Alzheimer's disease in cognitively unimpaired individuals. https://t.co/CLCtGxkV2P A 🧵...
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Excited our recent work is now in print in @CellCellPress! Why does tau protein impair memory in Alzheimer's? We show that high-molecular-weight tau from patient brains disrupts neuronal bursts by suppressing CaV2.3 calcium channels.
cell.com
In mouse models, tau impairs neuronal complex spike bursting and associated network processes in hippocampus CA1 alongside CaV2.3 downregulation. Soluble high-molecular-weight tau species drive these...
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🚨 In this paper in @NatureCommuniations, we find that Down syndrome #Alzheimer exhibits unique pathological features compared with sporadic late-onset and autosomal dominant AD with important implications for treatment strategies. https://t.co/5ruQ0RUThn
nature.com
Nature Communications - Down syndrome causes extensive Alzheimer’s disease pathology in all individuals and has been instrumental in development of the amyloid hypothesis in AD. Here, the...
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We developed a #CSF assay for #SV2A and found it correlates strongly with UCB-J PET in Alzheimers—more so than other established CSF synaptic markers. A promising step toward fluid biomarkers of #synaptic density #biomarkers #neurodegeneration
https://t.co/VTxwnQ9O49
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NPTX2 is emerging as a key neurodegeneration biomarker, but measurement tools are limited. We developed a low-volume, automated Simoa assay for its quantification in CSF #biomarkers #neurodegeneration
https://t.co/tjukHVl7qd
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Our most important paper, out now! A massive international collaboration, led by @AlexisMoscoso9, featuring over 6500 visually assessed tau PET scans covering the #Alzheimers spectrum! Thank you very much to the numerous contributors and collaborators who made this gem possible.
Tau PET positivity is detectable in a small but nonnegligible proportion of individuals in the preclinical stages of #Alzheimer disease, with increasing frequency in symptomatic stages of the disease. https://t.co/TK1U5vHw9j
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After more than 3 years of work, visualizing over 6,500 tau PET scans, and countless manuscript revisions, I still have to blink twice to believe it: our paper “Frequency and Clinical Outcomes Associated With Tau PET Positivity” is now published in JAMA. https://t.co/8iGcly62Qe
jamanetwork.com
This study used pooled data to estimate the frequency of tau positron emission tomography positivity and its associated risk of clinical outcomes.
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Fluid biomarker discovery in Alzheimer's and neurodegenerative diseases using Nucleic Acid Linked Immuno-Sandwich Assay @AlamarBio @andrealessa
https://t.co/PZTKwEjqyW
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New paper out! We explored immune-related proteins in CSF and plasma in Alzheimer's disease, linking TSPO PET to neuroinflammation. Highlights: CXCL1 and TNFRSF11B in CSF show strong links to TSPO and AD pathways. Check it out!
alz-journals.onlinelibrary.wiley.com
INTRODUCTION To understand the role of neuroinflammation in Alzheimer's disease (AD), we characterized immune-related proteins in central and peripheral biofluids. METHODS Selection of participant...
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We're entering a new era of #Alzheimers blood testing—fully automated platforms now deliver fast, accurate #pTau217 results for use in primary & secondary care. Proud to share senior authorship and proud of this multi-centre European collaboration. 🔗
nature.com
Nature Medicine - Among 1,767 patients in 5 centers, a fully automated blood test showed high accuracy for Alzheimer’s pathology in secondary and primary care using a predefined cutoff.
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I am very honored to have my work recognized by the AAIC Neuroscience Next! Thank you to all my mentors, colleagues, and friends who have been incredibly supportive along the way. @alzassociation
@goteborgsuni
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🎉 Congratulations to our PhD student @giovannacollar for receiving the AAIC Neuroscience Next ‘One to Watch’ Award at #AAICNeuro 🇺🇸! A well-deserved recognition by the @alzassociation for her contributions to neuroscience research. 👏✨
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Thrilled to be back home at @BarcelonaBeta as the Lead of the Neuroimaging Group! 🎉 Even better, we have a PhD position open to work with PET & MRI imaging in early stages of #Alzheimer’s. If you know someone passionate about neuroimaging, please share👇
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and now the paper is out... https://t.co/8cXZYHjcoI 📣 33 different ways to measure #blood #pTau 👉Mass Spec, semi & fully-auto immunoassays 🩸#pTau217 consistently best 📈Corr. between #pTau217 assays = optimism for standardisation @jmschott @AshviniKeshavan @wagnersbrum
pubmed.ncbi.nlm.nih.gov
Paired plasma and cerebrospinal fluid (CSF) samples from twenty-five Alzheimer's disease (AD) and 15 non-AD patients were measured blind. Thirty-three plasma assays were compared, for phosphorylated...
🚨 Available as a preprint – The @alzassociation #pTau round robin study 🚨 📣 33 different ways to measure #blood #pTau 📣 Mass Spec, semi & fully-auto immunoassays 📣 #pTau217 consistently best 📣 Corr. between assays = optimism for standardisation https://t.co/ixEOOBXtT6
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Whatever we may think the Big Data or mouse studies show, only well conducted and adequately powered clinical trials can tell us whether repurposed drugs can help in neurodegenerative disorders. Most likely (in my view) they will not. If only it was so easy!
The randomized trial results are in for the GLP-1 drug Exenatide for Parkinson's disease. Spoiler: NO symptomatic or disease modifying effect. Tom @foltynie @DavidStandaert and I interviewed in the @nytimes @ginakolata on the latest paper just published in @TheLancet by Tom and
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Check out our plasma p-tau round robin study! Just published at @alzdemjournals
New *open access* paper in @alzdemjournals — with the @alzassociation #GBSC we compared 33 different plasma p-tau assays. TLDR — Plasma p-tau217 on several platforms was the best at discriminating Alzheimer’s from controls https://t.co/GUOb2nRbTG
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New *open access* paper in @alzdemjournals — with the @alzassociation #GBSC we compared 33 different plasma p-tau assays. TLDR — Plasma p-tau217 on several platforms was the best at discriminating Alzheimer’s from controls https://t.co/GUOb2nRbTG
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🚨 New Study just out in @LancetGH 🧠 @lucasudaros, @vbwyll, @crisaguzzoli & colleagues used a machine learning model to determine the most important risk factors for cognitive and functional decline in Brazil and other Latin American Countries 🧶1👇
thelancet.com
Our findings indicate that Brazil converges with other Latin American countries to show that heterogeneous factors impacted more than demographic factors, but also showed a unique set of health...
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🚨 Open PhD Position 🚨 I am looking to hire a doctoral student for a fully funded PhD position focused on understanding the role of neuroinflammation and synaptic loss in Alzheimer’s disease and other proteinopathies with novel PET imaging biomarkers/ https://t.co/oaqyd8GZBZ
kidoktorand.varbi.com
Do you want to contribute to better health for all? To be a doctoral student means to devote oneself to a research project under supervision of experienced researchers and following an individual stud
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