Articles

    1. Importance of Full-Collapse Vesicle Exocytosis for Synaptic Fatigue-Resistance at Rat Fast and... 2018

      Rudling, Jane E; Drever, Benjamin D; Reid, Brian; Bewick, Guy S

      International Journal Of Molecular Sciences, Vol. 19, Issue 7, p. 1936.

      Neurotransmitter release during trains of activity usually involves two vesicle pools (readily releasable pool, or RRP, and reserve pool, or RP) and two exocytosis mechanisms ("full-collapse" and "... Read more

      Neurotransmitter release during trains of activity usually involves two vesicle pools (readily releasable pool, or RRP, and reserve pool, or RP) and two exocytosis mechanisms ("full-collapse" and "kiss-and-run"). However, synaptic terminals are adapted to differing patterns of use and the relationship of these factors to enabling terminals to adapt to differing transmitter release demands is not clear. We have therefore tested their contribution to a terminal's ability to maintain release, or synaptic fatiguability in motor terminals innervating fast-twitch (fatiguable), and postural slow-twitch (fatigue-resistant) muscles. We used electrophysiological recording of neurotransmission and fluorescent dye markers of vesicle recycling to compare the effects of kinase inhibitors of varying myosin light chain kinase (MLCK) selectivity (staurosporine, wortmannin, LY294002 & ML-9) on vesicle pools, exocytosis mechanisms, and sustained neurotransmitter release, using postural-type activity train (20 Hz for 10 min) in these muscles. In both muscles, a small, rapidly depleted vesicle pool (the RRP) was inhibitor insensitive, continuing to release FM1-43, which is a marker of full-collapse exocytosis. MLCK-inhibiting kinases blocked all remaining FM1-43 loss from labelled vesicles. However, FM2-10 release only slowed, indicating continuing kiss-and-run exocytosis. Despite this, kinase inhibitors did not affect transmitter release fatiguability under normal conditions. However, augmenting release in high Ca entirely blocked the synaptic fatigue-resistance of terminals in slow-twitch muscles. Thus, full-collapse exocytosis from most vesicles (the RP) is not essential for maintaining release during a single prolonged train. However, it becomes critical in fatigue-resistant terminals during high vesicle demand. Read less

      Journal Article  |  Full Text Online

    2. Very young leaders 2014

      Green, Jane Bewick

      Conference & Common Room, Vol. 51, Issue 2, p. 11.

      The idea is eventually to host a competition day and invite other local schools to come and join in with a multi-skills, multi-sport event." For the moment, the Young Leaders at Newcastle-underLyme... Read more

      The idea is eventually to host a competition day and invite other local schools to come and join in with a multi-skills, multi-sport event." For the moment, the Young Leaders at Newcastle-underLyme Junior School help out with school events throughout the year, but particularly Sports Day. Read less

      Magazine Article  |  Full Text Online

    3. A job that no one really notices 2014

      Green, Jane Bewick

      Conference & Common Room, Vol. 51, Issue 1, p. 21.

      "The biggest issue we have here is the single pipe heating system that has been in place for decades. Because of the size of the school, it's not something we can easily replace, so we spend a lot ... Read more

      "The biggest issue we have here is the single pipe heating system that has been in place for decades. Because of the size of the school, it's not something we can easily replace, so we spend a lot of time making sure it's as efficient as possible. The school has an excellent sporting record and its facilities include cricket, rugby, netball and football pitches, tennis courts, a super new Sport England badminton facility, and a swimming pool. Read less

      Magazine Article  |  Full Text Online

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    Books & Media

    1. Memoirs of a pegtop.

      By the author of Adventures of a pincushion. ; [Four lines of verse].

      Multiple Locations | Book

    2. Women in print : essays on the print culture of American women from the nineteenth and twentieth...

      edited by James P. Danky and Wayne A. Wiegand ; foreword by Elizabeth Long.

      Online Resources Z473 .W68 2006 ebook | Book

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