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Allen Institute Profile picture
@AllenInstitute
Jun 9 • 5 tweets • 4 min read Twitter logo Read on Twitter
An overactive inflammatory response could be at the root of many long #COVID cases, according to a new study from the Allen Institute for #Immunology and @fredhutch. 🧵 alleninstitute.org/news/many-long…
Scientists have seen previous links between inflammation and long #COVID, but the new study – out today in @NatureComms – is the first to trace the persistence of these inflammatory markers over time in the same patients. (2/5) nature.com/articles/s4146…
Out of 55 patients with long #COVID, ~2/3 had persistently high levels of certain signals of inflammation. The Allen Institute team was able to differentiate two kinds of #LongCOVID, inflammatory long COVID (in red) and non-inflammatory (in blue). (3/5) Graph with "Days post ...
The patient volunteers in this new analysis are part of a larger, ongoing study based at @fredhutch, the Seattle COVID Cohort Study, which is led by Julie McElrath, and Julie Czartoski. (4/5) fredhutch.org/en/research/di…
The Allen Institute for Immunology works to understand the delicate balancing act of the human immune system—how it works when we’re healthy, and what goes wrong in disease. Learn more about our #TeamScience approach to decoding the immune system: alleninstitute.org/division/immun… (5/5) Researcher holds slide up.

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More from @AllenInstitute

Allen Institute Profile picture
Jul 28, 2022
We are going cell by cell to uncover the cause for #Alzheimers disease.🌟 Announcing the first major #openscience data release from SEA-AD, a @NIHAging-funded collaboration with @UWMedicine and @KPWaResearch taking steps to #endALZ. #AllenImpact 🧵1 alleninstitute.org/what-we-do/bra…
Visit: sea-ad.org to access the Seattle Alzheimer’s Disease Brain Cell Atlas and freely explore the #openscience data. #AllenImpact #endALZ #Alzheimers 🧵2
This #openscience data examines the specific types of brain cells that die off or change in #Alzheimers disease. These insights could lead to better therapies to slow or halt the disease’s progression. #endALZ #AllenImpact 🧵3
Read 5 tweets
Allen Institute Profile picture
Feb 9, 2022
Announcing 23 Allen Distinguished Investigator awards —representing $15.5M in total funding— aiming to advance #FrontierScience in: neural circuits of under-studied organisms, advances in mammalian synthetic biology & micropeptides involved in immunity 🧵1
alleninstitute.org/what-we-do/fro…
Allen Distinguished Investigator Robyn Crook @SFStateBIO is leading a project to study the neural control of movement in cephalopods, animals that have the most complicated nervous systems of the invertebrate world. #FrontierScience 🐙
alleninstitute.org/what-we-do/fro… 🧵 2 Image
How does a new kind of behavior arises in evolution? Allen Distinguished Investigators @neuroluci, & @SGRodriques at @TheCrick are studying larvae brains of a species of fruit fly that have evolved to jump 10 times their body length. #FrontierScience alleninstitute.org/what-we-do/fro… 🧵 3 Image
Read 13 tweets
Allen Institute Profile picture
Feb 8, 2022
Brain mapping requires thorough synaptic measurements with diverse subclasses of neurons. Check out our latest #neuroscience publication: “Synaptic connectivity to L2/3 of primary visual cortex measured by two-photon #optogenetic stimulation”
📄 elifesciences.org/articles/71103 🧵 1
Our team [including @trav_ha, @timjarsky, @HongkuiZeng & @lukecampagnola] + @bakermind combined optogenetic stimulation with simultaneous multicellular recording to measure synaptic connections within cortical microcircuits. #optogenetics🧵 2
The reliability of multiphoton optogenetic stimulation was measured across Cre lines & connectivity measurements were verified by #patchclamp recordings 🧵 3
Read 8 tweets
Allen Institute Profile picture
Jan 24, 2022
Different cell types in the brain have their own connectivity rules and patterns. In a recently published study, our #neuroscience researchers took a deep dive into the connectomics of an important but enigmatic cell type, the chandelier cell. 🧵1

📄 elifesciences.org/articles/73783
🔬 💻 Using large-scale #electronmicroscopy with automated segmentation, we mapped the complete axo-axonic input onto pyramidal neurons (1,929 synapses in total, 1,127 from chandelier cells) in a volume of layer 2/3 of mouse visual cortex. #ImagingTheFuture #BrainMapping🧵2
By completely reconstructing the presynaptic chandelier cells, we found a novel principle of connectivity, where a group of interneurons are essentially interchangeable, but their postsynaptic targets individually regulate the amount of input they receive from the population. 🧵3
Read 7 tweets
Allen Institute Profile picture
Oct 31, 2019
In a new study out in @nature, our researchers make a big step forward in our quest to map the brain. Study findings lay the groundwork to better understand brain disorders & diseases such as #Alzheimers and #schizophrenia.

alleninstitute.org/what-we-do/bra…
This new study describes a high-resolution expansion of our #openscience Allen Mouse Brain Connectivity Atlas-- the most detailed map of connections in a mammalian brain to date. Access via: connectivity.brain-map.org
Using a computational approach, our researchers found that different sections of the cortex and thalamus can be mapped into a hierarchy, much like a company’s org chart – although not all connections followed this hierarchical structure. #brainmapping
Read 5 tweets

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