#cilia — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #cilia, aggregated by home.social.
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Inside an Ear
Our ears, like those of many other animals, convert mechanical signals to electrical ones, through a Rube-Goldberg-esque series of transformations. External sound waves make their way down the soft tube of the ear canal, which funnels them to a thin-walled cone, the eardrum, that’s about half as large as a dime. Here, the vibrating air pushes against the cone’s membrane, and those vibrations travel onward through a linked trio of small bones that amplify the vibration’s amplitude.
The last of these bones presses against an even smaller, oval-shaped membrane. As the bone moves, it shakes the membrane, sending waves through the liquid on its other side. Those waves travel down the spirals of the tiny, pea-sized cochlea, named for a snail shell’s shape. As the waves move through the liquid, they bend bundles of hair-like strands back and forth, like tall grass waving in a breeze. The bending triggers a chemical that binds to nerves at the base of the bundles, sending an electrical signal through the nerve and into the brain.
But the hair-like bundles, known as stereocilia, are also able to amplify incoming vibrations. In this case, the bundles in the outer portion of the cochlea expend energy to bend more than the incoming vibrations naturally make them move. This bending amplifies the fluid motion that gets transmitted to stereocilia further down the line; it’s those bundles that will make the final conversion to an electrical signal the brain receives. (Image credit: B. Kachar; research credit: Y. Thipmaungprom et al.; via APS)
Scanning electron microscope view of the stereocilia “hair bundles” inside a frog’s inner ear. #acoustics #biology #cilia #fluidDynamics #physics #science #vibration -
Inside an Ear
Our ears, like those of many other animals, convert mechanical signals to electrical ones, through a Rube-Goldberg-esque series of transformations. External sound waves make their way down the soft tube of the ear canal, which funnels them to a thin-walled cone, the eardrum, that’s about half as large as a dime. Here, the vibrating air pushes against the cone’s membrane, and those vibrations travel onward through a linked trio of small bones that amplify the vibration’s amplitude.
The last of these bones presses against an even smaller, oval-shaped membrane. As the bone moves, it shakes the membrane, sending waves through the liquid on its other side. Those waves travel down the spirals of the tiny, pea-sized cochlea, named for a snail shell’s shape. As the waves move through the liquid, they bend bundles of hair-like strands back and forth, like tall grass waving in a breeze. The bending triggers a chemical that binds to nerves at the base of the bundles, sending an electrical signal through the nerve and into the brain.
But the hair-like bundles, known as stereocilia, are also able to amplify incoming vibrations. In this case, the bundles in the outer portion of the cochlea expend energy to bend more than the incoming vibrations naturally make them move. This bending amplifies the fluid motion that gets transmitted to stereocilia further down the line; it’s those bundles that will make the final conversion to an electrical signal the brain receives. (Image credit: B. Kachar; research credit: Y. Thipmaungprom et al.; via APS)
Scanning electron microscope view of the stereocilia “hair bundles” inside a frog’s inner ear. #acoustics #biology #cilia #fluidDynamics #physics #science #vibration -
Calling all #cilia researchers. Our new Community Page presents CiliaKB, a manually curated #KnowledgeBase that serves as a one-stop platform for researchers to rapidly access mechanistic #data and mine for translational clues about cilia.
#CellBiology
https://plos.io/4d4QaYr -
Calling all #cilia researchers. Our new Community Page presents CiliaKB, a manually curated #KnowledgeBase that serves as a one-stop platform for researchers to rapidly access mechanistic #data and mine for translational clues about cilia.
#CellBiology
https://plos.io/4d4QaYr -
Zooplankton larvae shoot up in the water column when exposed to high pressure.
Mediated by special pressure-sensory photoreceptors.
From our paper on the mechanism of barotaxis.
https://elifesciences.org/articles/94306
#cilia #plankton #neuroscience -
Zooplankton larvae shoot up in the water column when exposed to high pressure.
Mediated by special pressure-sensory photoreceptors.
From our paper on the mechanism of barotaxis.
https://elifesciences.org/articles/94306
#cilia #plankton #neuroscience -
Great to see our paper on light-intensity dependent swimming patterns in #Chlamydomonas out now in Phys Rev Lett. as an Editors' suggestion! With a nice commentary by @[email protected]. Chlamy actively modulate the beat planes of their #cilia! journals.aps.org/prl/abstract... #protistsonsky
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Great to see our paper on light-intensity dependent swimming patterns in #Chlamydomonas out now in Phys Rev Lett. as an Editors' suggestion! With a nice commentary by @[email protected]. Chlamy actively modulate the beat planes of their #cilia! journals.aps.org/prl/abstract... #protistsonsky
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Video of the syncytial nerve net that regulates the gravisensory balancer ciliated cells in the ctenophore aboral organ (red dots - synapses)
https://elifesciences.org/articles/108420#video1 #cilia #neuroscience
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Video of the syncytial nerve net that regulates the gravisensory balancer ciliated cells in the ctenophore aboral organ (red dots - synapses)
https://elifesciences.org/articles/108420#video1 #cilia #neuroscience
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Trump said the U.S. will run Venezuela until a "proper transition can take place,"
as he defended Saturday's military strikes that resulted in the capture of President #Nicolás #Maduro and his wife."So we're going to stay until such time as we're going to run it, essentially, until such time as a proper transition can take place." Trump stammered to reporters from Mar a Lago.
Trump later told Fox & Friends that Maduro and his wife, #Cilia #Flores, were being brought by boat to New York where they'd stand #trial.
He said U.S. #oil #companies would head to Venezuela to operate in their oil reserves,
and the military is set to #attack #again if necessary to secure the effort.
https://www.npr.org/2026/01/03/g-s1-104346/trump-venezuela-maduro-press-conference?utm_social_post_id=641301310&utm_source=bsky.app&utm_social_handle_id=did%3Aplc%3Aln72v57ivz2g46uqf4xxqiuh&utm_campaign=npr&utm_term=nprnews&utm_medium=social -
Trump said the U.S. will run Venezuela until a "proper transition can take place,"
as he defended Saturday's military strikes that resulted in the capture of President #Nicolás #Maduro and his wife."So we're going to stay until such time as we're going to run it, essentially, until such time as a proper transition can take place." Trump stammered to reporters from Mar a Lago.
Trump later told Fox & Friends that Maduro and his wife, #Cilia #Flores, were being brought by boat to New York where they'd stand #trial.
He said U.S. #oil #companies would head to Venezuela to operate in their oil reserves,
and the military is set to #attack #again if necessary to secure the effort.
https://www.npr.org/2026/01/03/g-s1-104346/trump-venezuela-maduro-press-conference?utm_social_post_id=641301310&utm_source=bsky.app&utm_social_handle_id=did%3Aplc%3Aln72v57ivz2g46uqf4xxqiuh&utm_campaign=npr&utm_term=nprnews&utm_medium=social -
Mammalian #cilia & #flagella depend on association of A- & B-tubules to form axonemal doublet #microtubules, but how? This study shows that CFAP77 is essential role for #axonemal connection of these tubules and crucial for #sperm motility & #fertility in mice @PLOSBiology plos.io/4ouZ2KJ
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Mammalian #cilia & #flagella depend on association of A- & B-tubules to form axonemal doublet #microtubules, but how? This study shows that CFAP77 is essential role for #axonemal connection of these tubules and crucial for #sperm motility & #fertility in mice @PLOSBiology plos.io/4ouZ2KJ
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15-Oct-2025
How #cilia choreograph their “Mexican wave”, enabling marine creatures to swim
New research has unravelled the mystery of how microscopic cilia coordinate to move and propel marine creatures through water. -
15-Oct-2025
How #cilia choreograph their “Mexican wave”, enabling marine creatures to swim
New research has unravelled the mystery of how microscopic cilia coordinate to move and propel marine creatures through water. -
So you think you understand everything about #Chlamydomonas photoresponses? think again! #protists #behaviour #cilia To explain how Chlamy switches handedness from swimming in CCW circles in low-light to CW in high-light... see our new preprint led by Alan Tsang (HKU) 👇 doi.org/10.1101/2025...
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Tiny projections on the surface of human cells can determine whether we stay healthy or develop a genetic disorder. Cell biologist Helen May-Simera is an expert on these hair-like structures called #cilia. Her research explores the impact these tiny components can have. Her work bridges fundamental molecular science with clinical relevance, direct patient engagement, and international teaching 👉 https://www.magazine.uni-mainz.de/the-big-impact-of-tiny-cell-structures/
#CellBiology #MolecularBiology #Biology #JGUMagazine #MainzUniversity
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Happy to be involved in UNICIL, our new Wellcome Trust Discovery project coordinated by @micromotility.bsky.social
We will study ciliary dynamics across scales and organisms. A long-term #postdoc position will be available at Heidelberg University @uniheidelberg shortly.
@uniofexeter press release:
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Happy to be involved in UNICIL, our new Wellcome Trust Discovery project coordinated by @micromotility.bsky.social
We will study ciliary dynamics across scales and organisms. A long-term #postdoc position will be available at Heidelberg University @uniheidelberg shortly.
@uniofexeter press release:
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Excited to share that we have received significant funding from the @wellcometrust.bsky.social for a new interdisciplinary consortium project on #cilia coordination and function across scales and organisms! 🎉🥂@lsiexeter.bsky.social news.exeter.ac.uk/living-syste...
Multi-million project to ‘crac... -
Excited to share that we have received significant funding from the @wellcometrust.bsky.social for a new interdisciplinary consortium project on #cilia coordination and function across scales and organisms! 🎉🥂@lsiexeter.bsky.social news.exeter.ac.uk/living-syste...
Multi-million project to ‘crac... -
Spatiotemporal analysis of >10 million #PrimaryCilia in 22 mouse #brain regions shows that #cilia have region-specific length & orientation patterns. #Circadian rhythms of cilia length suggest a role for cilia in the brain’s response to environmental changes @PLOSBiology https://plos.io/4lWnfbQ
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Spatiotemporal analysis of >10 million #PrimaryCilia in 22 mouse #brain regions shows that #cilia have region-specific length & orientation patterns. #Circadian rhythms of cilia length suggest a role for cilia in the brain’s response to environmental changes @PLOSBiology https://plos.io/4lWnfbQ
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The four bundles of balancer #cilia showed coordinated beating and arrests, then re-beats, but the level of coordination was different between the two planes.
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The four bundles of balancer #cilia showed coordinated beating and arrests, then re-beats, but the level of coordination was different between the two planes.
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Kei then used a horizontal microscope and high-speed imaging to characterise the beating of balancer #cilia viewed from two orientations (along the tentacular and sagittal planes).
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Kei then used a horizontal microscope and high-speed imaging to characterise the beating of balancer #cilia viewed from two orientations (along the tentacular and sagittal planes).
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Researching for the @constant vitrine on #cilia. Trying to use as much as possible old electronics that were neatly stacked away in the microcontroller box. #permacomputing
(Permamicrocontrolling sounds a bit weird)Here's a duemilanove with an Lcd, telling two times 16 character stories.
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K.E. Machin in 1958 predicted that ciliary beat is NOT driven at the base, like in bacterial flagella (cilia are not whips) because then the wave would dye off towards the tip. He also predicted alternating activity of force generators across the axoneme.
https://doi.org/10.1242/jeb.35.4.796Jo Howard at "The Biophysics of Motile Cilia ‐ from Structure to Function" 830. WE-Heraeus-Seminar
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K.E. Machin in 1958 predicted that ciliary beat is NOT driven at the base, like in bacterial flagella (cilia are not whips) because then the wave would dye off towards the tip. He also predicted alternating activity of force generators across the axoneme.
https://doi.org/10.1242/jeb.35.4.796Jo Howard at "The Biophysics of Motile Cilia ‐ from Structure to Function" 830. WE-Heraeus-Seminar
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My presentation on "Coordination Across Scales — Or Why We Study Organisms"
at the "Future 3D Additive Manufacturing – The 3DMM2O Conference" from today.https://jekelylab.github.io/3DMM2O_Kloster_Schoental_Mar_2025.html#/title-slide
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My presentation on "Coordination Across Scales — Or Why We Study Organisms"
at the "Future 3D Additive Manufacturing – The 3DMM2O Conference" from today.https://jekelylab.github.io/3DMM2O_Kloster_Schoental_Mar_2025.html#/title-slide
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The #goodnews for today is that #coral larvae stop their #cilia and contract, when the light goes off. How nice!
https://www.biorxiv.org/content/10.1101/2025.02.06.636794v1 -
The #goodnews for today is that #coral larvae stop their #cilia and contract, when the light goes off. How nice!
https://www.biorxiv.org/content/10.1101/2025.02.06.636794v1 -
In Chlamy, #cilia are almost perfectly coordinated (in-phase) www.youtube.com/watch?v=WbpU... , allowing the cells to swim a fast breaststroke. In organisms with many more cilia (many thousands!) synchronised beating is no longer efficient, instead, metachronal coordination is the solution! 2/
Chlamydomonas flagella beating... -
We published a new preprint on the biophysics of ciliary metachronal waves in the Platynereis larva. https://www.biorxiv.org/content/10.1101/2025.02.10.637311v2 In collaboration with @micromotility.bsky.social and Rebecca Poon #cilia #biology #biophysics #platynereis 1/6
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We published a new preprint on the biophysics of ciliary metachronal waves in the Platynereis larva. https://www.biorxiv.org/content/10.1101/2025.02.10.637311v2 In collaboration with @micromotility.bsky.social and Rebecca Poon #cilia #biology #biophysics #platynereis 1/6
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New preprint from Rebecca's PhD! did you know that the ciliary band metachronal wave in #Platynereis is a series of tiny waves within each multiciliated cell! What happens if you ablate some cilia?? 🌊😱 Cool #cilia collab w/ @jekely.biologists.social.ap.brid.gy! Revealed here doi.org/10.1101/2025...
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New preprint from the lab on #coral larval light responses, including ciliary arrests and body-wide contractions.
Led by Emelie Brodrick, in collaboration with @micromotility.bsky.social
#biology #cilia @ERC_Research
#hfsp https://www.biorxiv.org/content/10.1101/2025.02.06.636794v1 -
New preprint from the lab on #coral larval light responses, including ciliary arrests and body-wide contractions.
Led by Emelie Brodrick, in collaboration with @micromotility.bsky.social
#biology #cilia @ERC_Research
#hfsp https://www.biorxiv.org/content/10.1101/2025.02.06.636794v1 -
MC4R regulates #BodyWeight at hypothalamic neuronal #cilia, but its levels are normally v low. @nachury &co show that MC4R accumulation is prevented via continuous ubiquitin- & β-arrestin-dependent exit from cilia, unless MC4R is inhibited by AgRP #plosbiology https://plos.io/40MWUUz
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MC4R regulates #BodyWeight at hypothalamic neuronal #cilia, but its levels are normally v low. @nachury &co show that MC4R accumulation is prevented via continuous ubiquitin- & β-arrestin-dependent exit from cilia, unless MC4R is inhibited by AgRP #plosbiology https://plos.io/40MWUUz
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🔬Our @gaiapigino Group and @stefandiezlab from @tudresden reveal how the "tubulin code" regulates bidirectional IFT train movement in #cilia, shedding light on ciliopathies and beyond.
📰Funded by @erc_research and @poldresden in @natcomms
https://humantechnopole.it/en/news/the-tubulin-code-in-control-of-ift-train-motion/
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🔬Our @gaiapigino Group and @stefandiezlab from @tudresden reveal how the "tubulin code" regulates bidirectional IFT train movement in #cilia, shedding light on ciliopathies and beyond.
📰Funded by @erc_research and @poldresden in @natcomms
https://humantechnopole.it/en/news/the-tubulin-code-in-control-of-ift-train-motion/
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Okay, let’s see if I understood this correctly and if it works: theoretically, my toots should now also be visible on Bluesky. If yes: Hello!!!
So I’ll just add a few hashtags now and look forward to confirmation from the blue universe… 🦋
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Okay, let’s see if I understood this correctly and if it works: theoretically, my toots should now also be visible on Bluesky. If yes: Hello!!!
So I’ll just add a few hashtags now and look forward to confirmation from the blue universe… 🦋
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The movement of brain ependymal #cilia was first described by Purkinje in 1836.
Purkinje JE (1836) Ueber Flimmerbewegungen im Gehirn. Archiv für Anatomie, Physiologie und Wissenschaftliche Medicin (Müller) Jahrgang 1836, pp 289–291
https://dl.ub.uni-freiburg.de/diglit/reichert1836/0005?sid=4c508554c282ebc7ae3362aa2e83f978
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The movement of brain ependymal #cilia was first described by Purkinje in 1836.
Purkinje JE (1836) Ueber Flimmerbewegungen im Gehirn. Archiv für Anatomie, Physiologie und Wissenschaftliche Medicin (Müller) Jahrgang 1836, pp 289–291
https://dl.ub.uni-freiburg.de/diglit/reichert1836/0005?sid=4c508554c282ebc7ae3362aa2e83f978
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Like most microswimmers, these Synura uvella algae use cilia to swim. Cilia are tiny, hair-like appendages that flap to produce thrust. Even under a microscope, the cilia are hard to see because they are so thin and move quickly in and out of the microscope’s narrow focus. A cilia’s stroke is always asymmetric — no simple back-and-forth motions for them — because, at the algae’s scale, symmetric motion won’t move you anywhere. This is a peculiar feature of small swimmers in viscous fluids. At the human scale, we can mimic the same physics by mixing and unmixing fluids like corn syrup. (Video and image credit: L. Cesteros; via Nikon Small World in Motion)
Synura uvella algae swimming under magnification.https://fyfluiddynamics.com/2024/10/swimming-with-cilia/
#biology #cilia #fluidDynamics #laminarFlow #microswimmer #physics #science #viscousFlow