ArticleThe Journal of cell biology1975
Motility in Echinosphaerium nucleofilum. I. An analysis of particle motions in the axopodia and a direct test of the involvement of the axoneme.
Article in The Journal of cell biology, 1975. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 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
8 citing papers in PubMed, 54 citations in OpenAlex.
- Recent Advances of Microneedles and Their Application in Disease Treatment.International journal of molecular sciences · 2022Review
- Microinjected fluorescent polystyrene beads exhibit saltatory motion in tissue culture cells.The Journal of cell biology · 1984Article
- Analysis of the role of microtubules and actin in erythrophore intracellular motility.The Journal of cell biology · 1983Article
- Cytoplasmic structure in rapid-frozen axons.The Journal of cell biology · 1982Article
- Studies on the motility of the foraminifera. I. Ultrastructure of the reticulopodial network of Allogromia laticollaris (Arnold).The Journal of cell biology · 1981Article
- Polarity of some motility-related microtubules.Proceedings of the National Academy of Sciences of the United States of America · 1981Article
- The mechanism of microtubule associated cytoplasmic transport. Isolation and preliminary characterisation of a microtubule transport system.Cell and tissue research · 1979Article
- Light-induced alterations in cell shape and pigment displacement in chromatophores of the sea urchin Centrostephanus longispinus.Cell and tissue research · 1977Article
Corrections and comments
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Authors and funding
1 author.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The motion of particles in the axopodia of Echinosphaerium nucleofilum is saltatory. In the present study, photokymograph records of 123 motions from six axopodia have been analyzed. Particles followed rectilinear paths of from 1 to 15 mum while in continuous motion at an average velocity of 0.66 plus or minus 0.32 mum/s. The velocity of the particles was variable in 36% of the cases measured. Some motions were punctuated by pauses either before continuing in the same direction or reversing. Frequently, several particles were moving at the same velocity, but neighboring particles showed no motion or moved in the opposite direction. Two particles occasionally contacted one another and travelled as a unit for varying lengths of time but subsequently moved independently. These motions reflect the underlying mechanism of motive force production. Furthermore, a glass microneedle can be substituted for the microtubular axoneme in the axopodia. In these artificial axopodia, bidirectional particle motions occurred which were similar to those in normal axopodia. Colchicine, at the threshold dose for axonemal dissolution, had no affect on these particel motions. It is concluded that the microtubular axoneme is not responsible for particle motions and also that individual microtubules are unlikely candidates for motive force production in this system.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.