Russ Hepple

Very nice figure showing the fiber type composition of hindlimb muscles in mice. Notice the very high proportion of type IIb fibers in most muscles, a fiber type that does not exist in humans.

@LauraVW_UCD @DrKimEBarrett @RipplingerLab @gareaulab @RogersLabUCD @AngelaHaczku @GoncharovaLab @lein_lab_ucd @smbrander @SaraThomasy @MNCline I would add to this my wife @TaivassaloTanja and good friends @EsserKaryn and @LabDale

@PhysInHistory @Madam_Mito I miss Carl and his wisdom.

"We make our world significant by the courage of our questions and by the depth of our answers." - Carl Sagan

Check this out…

@jmcin9 Right?! Swimming in the rain is brilliant!

@jmcin9 Oh, I get it…

@michael_duchen @BiochemSoc @uclbiosciences Congratulations, Michael!

Wow, this is simply fascinating! pnas.org/content/116/32… Live mitochondria seen in unprecedented detail with ∼60 nm superresolution phys.org/news/2019-08-m…

Registration is now open for the 2025 Advances in Skeletal Muscle Biology Conference!! Visit the UF Myology Institute website for more information. myology.institute.ufl.edu/conferences/mu…

@MuscleBiology @spirochrome Super cool - I appreciate the details! One more question - Was this super-resolution confocal?

@HeppleRuss Thanks!!! ☺️ These are live muscle fibers stained with PK mito @spirochrome for mitochondria. This particular fiber was damaged with sarcomere disorganization.. which probably also disorganizes the mitochondrial network.

Yes, yes, Friday! #Myotwitter #FluorescenceFriday

The human egg - the oocyte - does not have mitochondrial complex I, one of the most critical energy-transforming mitochondrial feature in the human brain "Complex I is neither assembled nor active in early oocytes" nature.com/articles/s4158…

Calling the #myology and #myotwitter community to submit their work to our striated #muscle #biology centered collection. Please RT for greater reach! @UFMyology

📣Did you know that The Journal of Physiology is one of the most highly-cited #physiology journals, with 52,000 cites in 2022?🎉

@PGreenhaff @MViggars I would not rule out an influence but the paper noted that the diurnal effect on respiration required Sirt4, which implicates changes in acetylation status of mitochondrial proteins in the effect. So to me the question is what would regulate Sirt4 in a diurnal manner?

this is fascinating…

@jmcin9 @freddyeescorcia Depends how you categorize Pluto 😉 Maybe have 9 just to cover your bets

Mark your calendars for the 2025 Advances in Skeletal Muscle Biology (ASMB) Conference on March 19-21, 2025 on UF's Gainesville, FL Campus!

Thermoreg people! Come work with us!