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Keywords: Paramecium
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Journal Articles
J Exp Biol (2021) 224 (9): jeb232074.
Published: 4 May 2021
...Junji Yano; Russell Wells; Ying-Wai Lam; Judith L. Van Houten ABSTRACT Calcium ions (Ca 2+ ) entering cilia through the ciliary voltage-gated calcium channels (Ca V ) during the action potential causes reversal of the ciliary power stroke and backward swimming in Paramecium tetraurelia . How...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (12): jeb219253.
Published: 17 June 2020
.... We demonstrate the device by recording action potentials in Paramecium and injecting a fluorescent dye into the cytosol. * Authors for correspondence ( lea-laetitia.pontani@sorbonne-universite.fr , alexis.prevost@sorbonne-universite.fr , romain.brette@inserm.fr ) Competing interests...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (19): 3028–3038.
Published: 1 October 2016
...Sukanya Lodh; Junji Yano; Megan S. Valentine; Judith L. Van Houten ABSTRACT Paramecium cells swim by beating their cilia, and make turns by transiently reversing their power stroke. Reversal is caused by Ca 2+ entering the cilium through voltage-gated Ca 2+ (Ca V ) channels that are found...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (17): 2767–2772.
Published: 1 September 2009
...Taichi Toyoda; Yoshinori Hiramatsu; Toshiaki Sasaki; Yasuo Nakaoka SUMMARY Relationships between the thermo-sensitive response and membrane lipid fluidity were studied using a ciliated protozoan, Paramecium multimicronucleatum. Paramecium elicits a transient membrane depolarization in response...
Journal Articles
J Exp Biol (2009) 212 (2): 270–276.
Published: 15 January 2009
...Yasuo Nakaoka; Takafumi Imaji; Masahiro Hara; Noboru Hashimoto SUMMARY The ciliated protozoan Paramecium spontaneously changes its swimming direction in the absence of external stimuli. Such behavior is based on resting potential fluctuations, the amplitudes of which reach a few mV. When...
Journal Articles
J Exp Biol (2007) 210 (2): 357–365.
Published: 15 January 2007
...Wade E. Bell; Robin R. Preston; Junji Yano; Judith L. Van Houten SUMMARY Paramecium tetraurelia is attracted to acetate and biotin by swimming smoothly and fast up gradients of these attractants, and turning immediately and slowing down when leaving these stimuli. We use a group of mutants, each...
Journal Articles
J Exp Biol (2005) 208 (3): 523–537.
Published: 1 February 2005
...Masaaki Iwamoto; Kazuyuki Sugino; Richard D. Allen; Yutaka Naitoh SUMMARY A fresh water protozoan Paramecium multimicronucleatum adapted to a given solution was found to swell until the osmotic pressure difference between the cytosol and the solution balanced the cytosolic pressure. The cytosolic...
Journal Articles
J Exp Biol (2004) 207 (10): 1625–1632.
Published: 15 April 2004
...Jolanta Wiejak; Liliana Surmacz; Elzbieta Wyroba SUMMARY Evidence that dynamin is associated with the sequestration of the Paramecium β 2 -adrenergic receptor (βAR)immunoanalogue is presented. We previously reported a dramatic change in the distribution of βAR analogue in the subcellular fractions...
Journal Articles
J Exp Biol (2003) 206 (3): 627–636.
Published: 1 February 2003
...Christopher R. Wood; Todd M. Hennessey SUMMARY Paramecium represents a simple, eukaryotic model system to study the cellular effects of some neuroactive drugs. They respond to the agonistβ,γ-methylene ATP with a transient depolarizing receptor potential,Ca 2+ -based action potentials and repetitive...
Journal Articles
J Exp Biol (1987) 127 (1): 95–103.
Published: 1 January 1987
...YASUO NAKAOKA; TOHRU KUROTANI; HIROKAZU ITOH The localization of thermoreceptors in Paramecium , and the ionic basis of thermoreception, was investigated in posterior and anterior fragments of cells. Transverse section of the animals was used to obtain these fragments, which sealed up and swam...
Journal Articles
J Exp Biol (1986) 126 (1): 111–117.
Published: 1 November 1986
...TAKASHI OKA; YASUO NAKAOKA; FUMIO OOSAWA When Paramecium are transferred from the solution to which they have been adapted to a solution of a different K + concentration, they initially change their swimming behaviour and then gradually recover normal swimming. This adaptation to the new solution...
Journal Articles
J Exp Biol (1983) 103 (1): 253–264.
Published: 1 March 1983
...YOUKO SATOW; A. DON MURPHY; CHING KUNG A depolarizing receptor potential produced by mechanical stimulation was studied in pawn mutants of Paramecium tetraurelia bathed in TEA solution. The potential was dependent upon the strength of the mechanical stimulation until a maximum response was reached...