696 results found
    1. Cell Biology
    2. Physics of Living Systems

    Distinct roles of nonmuscle myosin II isoforms for establishing tension and elasticity during cell morphodynamics

    Kai Weißenbruch et al.
    The mechanical response of adherent cells in structured environments is shown to be shaped by the intricate interplay between the three different isoforms of an essential molecular motor.
    1. Neuroscience

    Nitric oxide acts as a cotransmitter in a subset of dopaminergic neurons to diversify memory dynamics

    Yoshinori Aso et al.
    The interplay of nitric oxide and dopamine specialize one memory unit in a fly brain in predicting the value of odors based only on recent experience.
    1. Neuroscience

    Inhibitory muscarinic acetylcholine receptors enhance aversive olfactory learning in adult Drosophila

    Noa Bielopolski et al.
    Muscarinic acetylcholine receptor type A in adult Drosophila inhibits Kenyon cells, and is required for aversive olfactory learning and learning-associated synaptic depression between Kenyon cells and their output neurons.
    1. Cell Biology
    2. Physics of Living Systems

    Flagellar energetics from high-resolution imaging of beating patterns in tethered mouse sperm

    Ashwin Nandagiri et al.
    Calculations of flagellar energetics from beating patterns in sperm reveal that internal dissipation by dynein motors and other passive structures within the flagellum significantly exceeds external hydrodynamic dissipation.
    1. Neuroscience
    2. Physics of Living Systems

    The neuronal calcium sensor Synaptotagmin-1 and SNARE proteins cooperate to dilate fusion pores

    Zhenyong Wu et al.
    During neurotransmitter release, calcium-induced membrane insertion of the C2B domain of Synaptotagmin re-orients the bound SNARE complex which dilates the fusion pore in a mechanical lever action.
    1. Physics of Living Systems

    Muscle-specific economy of force generation and efficiency of work production during human running

    Sebastian Bohm et al.
    During human running, the soleus muscle was found to operate as work generator under optimal conditions for work production (high force-length potential and enthalpy efficiency) while the vastus lateralis promoted tendon energy storage and economical force generation (high force-length-velocity potential).
    1. Neuroscience

    Dopaminergic neurons write and update memories with cell-type-specific rules

    Yoshinori Aso, Gerald M Rubin
    Building on previous work (Aso et al., 2014a; Aso et al., 2014b), cell-type-specific drivers and optogenetics are used to control the local release of dopamine and reveal that distinct learning rules are implemented in parallel memory units.
    1. Cell Biology
    2. Physics of Living Systems

    Interplay of cell dynamics and epithelial tension during morphogenesis of the Drosophila pupal wing

    Raphaël Etournay et al.
    Autonomous patterns of cell contraction in the context of localized apical extracellular matrix constraints specify tissue stresses that reshape the wing epithelium.
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    The neuropeptide F/nitric oxide pathway is essential for shaping locomotor plasticity underlying locust phase transition

    Li Hou et al.
    Two neuropeptides, NPF1a and NPF2, act via the nitric oxide signaling pathway in the locust brain to regulate the trait transition between solitary and swarming behavior.
    1. Neuroscience

    Left-right side-specific endocrine signaling complements neural pathways to mediate acute asymmetric effects of brain injury

    Nikolay Lukoyanov et al.
    In addition to the well-established involvement of descending neural tracts, the left-right side-specific endocrine mechanism may contribute to signaling from injured brain to spinal motor circuits.

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