ArticleJournal of the Association for Research in Otolaryngology : JARO2012
Exocytosis in the frog amphibian papilla.
Article in Journal of the Association for Research in Otolaryngology : JARO, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
5 citing papers in PubMed, 6 citations in OpenAlex.
- Phase-Locking Requires Efficient CaThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2021Article
- How to Build a Fast and Highly Sensitive Sound Detector That Remains Robust to Temperature Shifts.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2019Article
- Calcium-induced calcium release supports recruitment of synaptic vesicles in auditory hair cells.Journal of neurophysiology · 2016Article
- Cholinergic efferent synaptic transmission regulates the maturation of auditory hair cell ribbon synapses.Open biology · 2013Article
- Frequency-selective exocytosis by ribbon synapses of hair cells in the bullfrog's amphibian papilla.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2012Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
Abstract
Using whole-cell patch-clamp recordings, we measured changes in membrane capacitance (ΔC (m)) in two subsets of hair cells from the leopard frog amphibian papilla (AP): the low-frequency (100-500 Hz), rostral hair cells and the high-frequency (500-1200 Hz), caudal hair cells, in order to investigate tonotopic differences in exocytosis. Depolarizations of both rostral and caudal hair cells evoked robust ΔC (m) responses of similar amplitude. However, the calcium dependence of release, i.e., the relationship between ΔC (m) relative to the amount of calcium influx (Q (Ca) (2+)), was found to be linear in rostral hair cells but supra-linear in caudal hair cells. In addition, the higher numbers of vesicles released at caudal hair cell active zones suggests increased temporal precision of caudal hair cell exocytosis. ΔC (m) responses were also obtained in response to sinusoidal stimuli of varying frequency, but neither rostral nor caudal hair cell ΔC (m) revealed any frequency selectivity. While all AP hair cells express both otoferlin and synaptotagmin IV (SytIV), we obtained evidence of a tonotopic distribution of the calcium buffer calretinin which may further increase temporal resolution at the level of the hair cell synapse. Our findings suggest that the low (rostral) and high (caudal) frequency hair cells apply different mechanisms for fine-tuning exocytosis.
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Registered trials
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