309 results found
  1. January 2015

    Episode 17: January 2015

    In this episode we hear about controlling sperm by optogenetics, hibernation, body clocks, enzyme structure, and a way to overcome stress-induced infertility.
    1. Neuroscience

    Dopaminergic and opioidergic regulation during anticipation and consumption of social and nonsocial rewards

    Sebastian Korb et al.
    Administration of dopamine and opioid receptor antagonists resulted in reduced reward anticipation (effort and increased negative facial reactions), but only administration of opioid antagonists resulted in reduced liking (facial reactions).
    1. Neuroscience

    Transsynaptic mapping of Drosophila mushroom body output neurons

    Kristin M Scaplen et al.
    Transsynaptic mapping of the postsynaptic connections of mushroom body output neurons reveal both divergent and convergent projections allowing for multimodal integration prior to initiation of an output response.
    1. Neuroscience

    Non-selective inhibition of inappropriate motor-tendencies during response-conflict by a fronto-subthalamic mechanism

    Jan R Wessel et al.
    Action-selection under response-conflict is buttressed by an inhibitory control signal from the basal ganglia that non-selectively suppresses motor excitability.
    1. Neuroscience

    Entrainment and maintenance of an internal metronome in supplementary motor area

    Jaime Cadena-Valencia et al.
    Temporal rhythms are encoded in the supplementary motor area by firing rate oscillations and rhythmic bursts of gamma-band LFP activity.
    1. Neuroscience

    Localization, proteomics, and metabolite profiling reveal a putative vesicular transporter for UDP-glucose

    Cheng Qian et al.
    Identification of novel vesicular transporters will shed light on to expanding the chemical diversity of neurotransmitters or neuromodulators.
    1. Neuroscience

    An insect-like mushroom body in a crustacean brain

    Gabriella Hannah Wolff et al.
    An insect-like mushroom body in one group of crustaceans, the mantis shrimps (Stomatopoda), suggests either an ancient origin of this center and its reduction and loss in other crustaceans, or an extraordinary example of convergent evolution with the insect mushroom body.
    1. Neuroscience

    Selective and regulated trapping of nicotinic receptor weak base ligands and relevance to smoking cessation

    Anitha P Govind et al.
    The smoking cessation drug varenicline (Chantix) and other weak base ligands reduce a4b2-type nicotinic receptor (a4b2R) upregulation through slow intracellular release due to selective trapping in acidic vesicles that contain a4b2Rs.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cooperative regulation by G proteins and Na+ of neuronal GIRK2 K+ channels

    Weiwei Wang et al.
    Determining how GIRK2 activity depends on the concentration of Gβγ subunits in lipid membranes at different Na+ concentrations has allowed the Gβγ concentration generated during GABAB activation in neurons to be estimated.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Ca2+ entry into neurons is facilitated by cooperative gating of clustered CaV1.3 channels

    Claudia M Moreno et al.
    CaV1.3 channels of the short isoform are coupled via their C-terminal domains in a Ca2+-CaM-dependent manner, which facilitates Ca2+ influx and increases the discharge of hippocampal neurons.

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