Sasha (Aleksandra) Petrovskaya's Avatar

Sasha (Aleksandra) Petrovskaya

@sashapetrovskaia

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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21.04.2025
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Latest posts by Sasha (Aleksandra) Petrovskaya @sashapetrovskaia

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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

05.03.2026 15:01 πŸ‘ 80 πŸ” 37 πŸ’¬ 1 πŸ“Œ 10
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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...

08.02.2026 19:41 πŸ‘ 38 πŸ” 13 πŸ’¬ 0 πŸ“Œ 1
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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...

Our review β€œA competition model of multilineage priming and cell-fate decisions” is out: www.cell.com/cell-reports...

19.01.2026 23:05 πŸ‘ 30 πŸ” 11 πŸ’¬ 0 πŸ“Œ 0
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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.

In @elife.bsky.social: A high-resolution, easy-to-build light-sheet microscope for subcellular imaging doi.org/10.7554/eLif...

05.02.2026 22:53 πŸ‘ 47 πŸ” 23 πŸ’¬ 1 πŸ“Œ 0
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Biofluid biomarkers in Alzheimer’s diseaseΒ 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...

www.nature.com/articles/s41...

05.02.2026 12:31 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

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.

28.01.2026 07:41 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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New on bioRxiv! 🚨
β€œPericyte 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!
πŸ”— www.biorxiv.org/content/10.1...
πŸ§ͺ 🧡1/8

20.11.2025 21:03 πŸ‘ 38 πŸ” 11 πŸ’¬ 1 πŸ“Œ 2
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#LISH25 was BIG.

23.08.2025 17:24 πŸ‘ 26 πŸ” 4 πŸ’¬ 0 πŸ“Œ 2
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This was FUN! Thanks everyone. Light sheet fever. #LISH25

22.08.2025 23:08 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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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 πŸ”¬
🌍 www.intelligent-imaging.com/AxL

22.08.2025 17:40 πŸ‘ 9 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0

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

22.08.2025 16:44 πŸ‘ 7 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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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

21.08.2025 18:02 πŸ‘ 5 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0

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 β€œminimal version”) and for another great day at #LISH25.

17.08.2025 07:38 πŸ‘ 7 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Love these names πŸ˜†

15.08.2025 09:42 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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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

14.08.2025 19:12 πŸ‘ 27 πŸ” 10 πŸ’¬ 1 πŸ“Œ 0
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The world behind LS7 and Blaze starts with 3i for me. Very excited to see the result of an overnight imaging #LISH5 #AD #neuroscience

13.08.2025 19:53 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

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...

12.08.2025 17:57 πŸ‘ 40 πŸ” 15 πŸ’¬ 0 πŸ“Œ 0
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We teach also #Napari at #LISH25. By @haesleinhuepf.bsky.social highlighting the awesome power of #Jupyter_notebooks for #reproducibility

12.08.2025 14:57 πŸ‘ 8 πŸ” 2 πŸ’¬ 0 πŸ“Œ 3

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

11.08.2025 20:53 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Congratulations! πŸ‘ Wishing for a smooth publishing process!

08.06.2025 10:18 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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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 ...

Excited to present our study in β€ͺ@natneuro.nature.com‬: a deep brain pathway that triggers safety-driven movementβ€”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

28.05.2025 11:52 πŸ‘ 36 πŸ” 11 πŸ’¬ 0 πŸ“Œ 0
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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...

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....

06.05.2025 18:21 πŸ‘ 13 πŸ” 6 πŸ’¬ 0 πŸ“Œ 0