Reposted by Sasha (Aleksandra) PetrovskayaBellarditaLab @bellarditac.bsky.social · 09/09/2026We’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! 021
Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 25/08/2026We’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👏 000
Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 16/08/2026We’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! 021
Reposted by Sasha (Aleksandra) PetrovskayaAli 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... 0188
Reposted by Sasha (Aleksandra) PetrovskayaDanielle Beckman @daniellebeckman.bsky.social · 17/06/2026Not 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 26416
Reposted by Sasha (Aleksandra) PetrovskayaRune W. Berg @runewberg.bsky.social · 02/07/2026Nordic Neuroscience Meeting 2027 in Iceland! June 14-16, 2027 Call for symposia, see details below 1187
Reposted by Sasha (Aleksandra) PetrovskayaThe Brain Prize @brainprize.org · 05/03/2026Warm 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 18536
Reposted by Sasha (Aleksandra) PetrovskayaAli Maximilian Erturk @erturklab.bsky.social · 08/02/2026A 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... 03813
Reposted by Sasha (Aleksandra) PetrovskayaIgor Adameyko @adameykolab.bsky.social · 19/01/2026Our review “A competition model of multilineage priming and cell-fate decisions” is out: www.cell.com/cell-reports...cell.comA competition model of multilineage priming and cell-fate decisionsIn development, cells navigate highly complex gene-regulatory landscapes to make fate choices. Steinschaden et al. synthesize concepts of multilineage priming, microheterogeneity, and collective multi... 03011
Reposted by Sasha (Aleksandra) PetrovskayaKevin Dean @kevin-dean.bsky.social · 05/02/2026In @elife.bsky.social: A high-resolution, easy-to-build light-sheet microscope for subcellular imaging doi.org/10.7554/eLif...doi.orgA high-resolution, easy-to-build light-sheet microscope for subcellular imagingAn accessible light-sheet microscope delivers subcellular-resolution, multicolor volumetric, and live-cell imaging, lowering barriers to state-of-the-art performance. 14823
Reposted by Sasha (Aleksandra) PetrovskayaMaría A. Moro @mariangelesmoro.bsky.social · 05/02/2026www.nature.com/articles/s41...nature.comBiofluid biomarkers in Alzheimer’s disease and other neurodegenerative dementias - NatureImproved 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... 011
Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 28/01/2026Professor 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. 010
Reposted by Sasha (Aleksandra) PetrovskayaSøren Grubb @sorengrubb.bsky.social · 20/11/2025New 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 13811
Reposted by Sasha (Aleksandra) Petrovskayapaveltomancak.bsky.social @paveltomancak.bsky.social · 23/08/2025#LISH25 was BIG. 0264
Reposted by Sasha (Aleksandra) Petrovskayapaveltomancak.bsky.social @paveltomancak.bsky.social · 23/08/2025This was FUN! Thanks everyone. Light sheet fever. #LISH25 061
Reposted by Sasha (Aleksandra) Petrovskaya3i @the.3i.social · 22/08/2025Huge 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 194
Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 22/08/2025Thank 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 074
Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 21/08/2025Walking 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 052
Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 17/08/2025It 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. 071
Reposted by Sasha (Aleksandra) PetrovskayaSunny Dai @sunnydai.bsky.social · 15/08/2025Love these names 😆 021
Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 14/08/2025An 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 12710
Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 13/08/2025The world behind LS7 and Blaze starts with 3i for me. Very excited to see the result of an overnight imaging #LISH5 #AD #neuroscience 051
Reposted by Sasha (Aleksandra) PetrovskayaRobert Haase @haesleinhuepf.bsky.social · 12/08/2025My 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... 04015
Reposted by Sasha (Aleksandra) Petrovskayapaveltomancak.bsky.social @paveltomancak.bsky.social · 12/08/2025We teach also #Napari at #LISH25. By @haesleinhuepf.bsky.social highlighting the awesome power of #Jupyter_notebooks for #reproducibility 082
Sasha (Aleksandra) Petrovskaya @sashapetrovskaia.bsky.social · 11/08/2025It 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 7 020
Reposted by Sasha (Aleksandra) PetrovskayaOle Kiehn @olekiehn.bsky.social · 28/05/2025Excited 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/toYFNshorturl.atA hypothalamus–brainstem circuit governs the prioritization of safety over essential needs - Nature NeuroscienceAnimals 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 ... 03611
Reposted by Sasha (Aleksandra) PetrovskayaMartin Lauritzen @mlauritz.bsky.social · 06/05/2025Your 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.comA budget for brain metabolic water production by glucose catabolism during rest, rises in activity and sleep - Fluids and Barriers of the CNSMaintaining 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... 0136