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Sasha (Aleksandra) Petrovskaya

@sashapetrovskaia.bsky.social
58 followers 72 following 10 posts

PhD student at Copenhagen University// Martin Lauritzen Lab// Main interest in neurodegeneration/ brain vascularisation/ drug delivery/ molecular aspects of memory formation/ microscopy

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Reposted by Sasha (Aleksandra) Petrovskaya
BellarditaLab @bellarditac.bsky.social · 09/09/2026
We’re hiring a postdoc with strong in vivo electrophysiology experience! 🧠⚡ How do S1 and M1 generate predictions about movement and signal when reality deviates from expectation? Join us to uncover the circuit basis of sensorimotor prediction errors. DM me!
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Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 25/08/2026
We’re back from the IN retreat. Half of time I rehearsed my presentation, and the other half was needed to recover from stress after my talk, but in between I was reminded again of how great the Department @neuroscience-ucph.bsky.social is. Thanks to organizers👏
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Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 16/08/2026
We’re back after a great @naddenmark.bsky.social workshop, devoted to brain barriers & fluids, and headache. It broadened my knowledge about migraine targets beyond CGRP, barriers beyond the BBB and “good” sides of CSD…Thank you - @chrstaehr.bsky.social @sorengrubb.bsky.social and other organizers!
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Reposted by Sasha (Aleksandra) Petrovskaya
Ali Maximilian Erturk @erturklab.bsky.social · 15/05/2026
🧠 Does brain aging always mean vessel loss? We found the opposite in some aged brains: maladaptive hypervascularization, linked to cognitive decline and blood-brain barrier damage. Check it out below! www.biorxiv.org/content/10.6...
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Reposted by Sasha (Aleksandra) Petrovskaya
Danielle Beckman @daniellebeckman.bsky.social · 17/06/2026
Not all brains age the same🧐🧠 Using whole-brain 3D imaging combined with spatial proteomics, @erturklab.bsky.social revealed multiple trajectories of cerebrovascular aging. A fascinating new study: biorxiv.org/content/10.6... I'm always excited to share great work from my colleagues! #Neuroscience
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Reposted by Sasha (Aleksandra) Petrovskaya
Rune W. Berg @runewberg.bsky.social · 02/07/2026
Nordic Neuroscience Meeting 2027 in Iceland! June 14-16, 2027 Call for symposia, see details below
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Reposted by Sasha (Aleksandra) Petrovskaya
The Brain Prize @brainprize.org · 05/03/2026
Warm congratulations to The Brain Prize winners 2026, Professor David Ginty and Professor Patrik Ernfors, for their pioneering work on how the nervous system detects and processes touch and pain. Karolinska Institutet HHMI #Neuroscience #BrainPrize2026
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Reposted by Sasha (Aleksandra) Petrovskaya
Ali Maximilian Erturk @erturklab.bsky.social · 08/02/2026
A new preprint introduces aDISCO, a DISCO-based clearing approach that makes whole archival FFPE human tissues transparent and antibody-compatible, enabling true 3D light-sheet histology across brain & multiple organs at cellular resolution. Aguzzi & Helmchen teams. www.biorxiv.org/content/10.1...
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Reposted by Sasha (Aleksandra) Petrovskaya
Igor Adameyko @adameykolab.bsky.social · 19/01/2026
Our review “A competition model of multilineage priming and cell-fate decisions” is out: www.cell.com/cell-reports...
cell.com
A competition model of multilineage priming and cell-fate decisions
In development, cells navigate highly complex gene-regulatory landscapes to make fate choices. Steinschaden et al. synthesize concepts of multilineage priming, microheterogeneity, and collective multi...
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Reposted by Sasha (Aleksandra) Petrovskaya
Kevin Dean @kevin-dean.bsky.social · 05/02/2026
In @elife.bsky.social: A high-resolution, easy-to-build light-sheet microscope for subcellular imaging doi.org/10.7554/eLif...
doi.org
A high-resolution, easy-to-build light-sheet microscope for subcellular imaging
An accessible light-sheet microscope delivers subcellular-resolution, multicolor volumetric, and live-cell imaging, lowering barriers to state-of-the-art performance.
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Reposted by Sasha (Aleksandra) Petrovskaya
María A. Moro @mariangelesmoro.bsky.social · 05/02/2026
www.nature.com/articles/s41...
nature.com
Biofluid biomarkers in Alzheimer’s disease and other neurodegenerative dementias - Nature
Improved technologies facilitate the detection of molecules linked to neurodegenerative brain changes at very low concentrations in the blood, complementing the clinical evaluation of suspected neurod...
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Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 28/01/2026
Professor Leszek Kaczmarek, who supervised and kindly supported me while I was in Poland, offers his candid opinion on the advantages and challenges of pursuing a researcher career in Poland.
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Reposted by Sasha (Aleksandra) Petrovskaya
Søren Grubb @sorengrubb.bsky.social · 20/11/2025
New on bioRxiv! 🚨 “Pericyte and Endothelial Primary Cilia and Centrioles have Disparate Organization Across the Brain Microvasculature” This project studying #microvascular cells took an unexpected turn when we discovered that #pericytes have primary #cilia! 🔗 www.biorxiv.org/content/10.1... 🧪 🧵1/8
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Reposted by Sasha (Aleksandra) Petrovskaya
paveltomancak.bsky.social @paveltomancak.bsky.social · 23/08/2025
#LISH25 was BIG.
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Reposted by Sasha (Aleksandra) Petrovskaya
paveltomancak.bsky.social @paveltomancak.bsky.social · 23/08/2025
This was FUN! Thanks everyone. Light sheet fever. #LISH25
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Reposted by Sasha (Aleksandra) Petrovskaya
3i @the.3i.social · 22/08/2025
Huge thanks to @paveltomancak.bsky.social and @embo.org for hosting this year's amazing Light Sheet Microscopy course #LISH25. Our @dvonwangenheim.bsky.social and team were thrilled to capture beautiful images of many samples with AxL Cleared Tissue LightSheet 🔬 🌍 www.intelligent-imaging.com/AxL
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Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 22/08/2025
Thank you @paveltomancak.bsky.social @olafselchow.bsky.social @dvonwangenheim.bsky.social @bundschuhst.bsky.social @ereynaud.bsky.social @cuencam15.bsky.social Vlado, Stephan for a life-changing lightsheet experience towards even more beautiful and high-quality science
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Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 21/08/2025
Walking into the brain of an Alzheimer’s mouse. I overloaded the mouse with therapeutics (pink) and labeled vessels (green), and was clearing the brain for almost 2 months. Thanks to Stephan for a nice movie from #Blaze microscope at #LISH25 #LISH2025
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Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 17/08/2025
It was such a lovely (though a bit tough) experience for me! Thanks to the organiser @paveltomancak.bsky.social for the inspiration for this long trip (even if it was the “minimal version”) and for another great day at #LISH25.
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Reposted by Sasha (Aleksandra) Petrovskaya
Sunny Dai @sunnydai.bsky.social · 15/08/2025
Love these names 😆
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Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 14/08/2025
An AD mouse brain with therapeutic antibody (in blue) and smooth muscle cells (in yellow).The first attempt, but quite successful. Thanks to @dvonwangenheim.bsky.social #LISH25
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Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 13/08/2025
The world behind LS7 and Blaze starts with 3i for me. Very excited to see the result of an overnight imaging #LISH5 #AD #neuroscience
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Reposted by Sasha (Aleksandra) Petrovskaya
Robert Haase @haesleinhuepf.bsky.social · 12/08/2025
My tutorial materials & slides about #Reproducible #BioImageAnalysis using Python, Napari, Jupyter and #AI are available #openaccess. Thanks to #EMBOlsm25 for having me! It so great to visit friends at my former academic home campus for a couple of days 🤩 scads.github.io/embo-lsm-bia...
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Reposted by Sasha (Aleksandra) Petrovskaya
paveltomancak.bsky.social @paveltomancak.bsky.social · 12/08/2025
We teach also #Napari at #LISH25. By @haesleinhuepf.bsky.social highlighting the awesome power of #Jupyter_notebooks for #reproducibility
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Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 11/08/2025
It has been an amazing day#1 of the Light Sheet Microscopy Course #LISH25 in Dresden; excited to look at the microscopy world beyond Blaze and Light sheet 7
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Reposted by Sasha (Aleksandra) Petrovskaya
Ole Kiehn @olekiehn.bsky.social · 28/05/2025
Excited to present our study in ‪@natneuro.nature.com‬: a deep brain pathway that triggers safety-driven movement—overriding needs like finding food or social contacts. A look into how the brain weighs deep instincts. Congrats to all and first author @nkrauth.bsky.social. shorturl.at/toYFN
shorturl.at
A hypothalamus–brainstem circuit governs the prioritization of safety over essential needs - Nature Neuroscience
Animals need to adapt behavior to balance survival with fulfillment of essential needs. Krauth et al. identify neurons in the lateral hypothalamus that, when activated, prioritize survival over other ...
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Reposted by Sasha (Aleksandra) Petrovskaya
Martin Lauritzen @mlauritz.bsky.social · 06/05/2025
Your brain functions not only as a thinking organ but also as a miniature water factory. We here calculate how much water neuronal mitochondria produce by glucose oxidation: 300-400 ml. Of that amount, 100 ml go into brain's interstitial fluid. fluidsbarrierscns.biomedcentral.com/articles/10....
fluidsbarrierscns.biomedcentral.com
A budget for brain metabolic water production by glucose catabolism during rest, rises in activity and sleep - Fluids and Barriers of the CNS
Maintaining brain fluid homeostasis is of critical importance for creating a stable environment conducive to optimal neuronal functioning, nutrient distribution, and waste product removal. In this stu...
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