scholarly journals Dynamic peripheral traction forces balance stable neurite tension in regenerating Aplysia bag cell neurons

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Callen Hyland ◽  
Aaron F. Mertz ◽  
Paul Forscher ◽  
Eric Dufresne
Keyword(s):  
Traction Forces ◽  
Bag Cell Neurons

Video-microscopic measurement of cell-substratum traction forces generated by locomoting keratocytes

1993 ◽  
Vol 51 ◽  
pp. 188-189
Author(s):  
Tim Oliver ◽  
Michelle Leonard ◽  
Juliet Lee ◽  
Akira Ishihara ◽  
Ken Jacobson
Keyword(s):  
Silicone Rubber ◽  
Molecular Motors ◽  
Video Frame ◽  
Traction Forces ◽  
Cell Traction Forces ◽  
Latex Beads ◽  
Cell Traction ◽  
Local Cell ◽  
Microscopic Measurement ◽  
Kinetics Of

We are using video-enhanced light microscopy to investigate the pattern and magnitude of forces that fish keratocytes exert on flexible silicone rubber substrata. Our goal is a clearer understanding of the way molecular motors acting through the cytoskeleton co-ordinate their efforts into locomotion at cell velocities up to 1 μm/sec. Cell traction forces were previously observed as wrinkles(Fig.l) in strong silicone rubber films by Harris.(l) These forces are now measureable by two independant means.In the first of these assays, weakly crosslinked films are made, into which latex beads have been embedded.(Fig.2) These films report local cell-mediated traction forces as bead displacements in the plane of the film(Fig.3), which recover when the applied force is released. Calibrated flexible glass microneedles are then used to reproduce the translation of individual beads. We estimate the force required to distort these films to be 0.5 mdyne/μm of bead movement. Video-frame analysis of bead trajectories is providing data on the relative localisation, dissipation and kinetics of traction forces.

Ca2+ entry through a non-selective cation channel in Aplysia bag cell neurons

Neuroscience ◽  
2009 ◽  
Vol 162 (4) ◽  
pp. 1023-1038 ◽  
Author(s):  
J.E. Geiger ◽  
C.M. Hickey ◽  
N.S. Magoski
Keyword(s):  
Cation Channel ◽  
Bag Cell Neurons

scholarly journals Why heel spurs are traction spurs after all

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Johann Zwirner ◽  
Aqeeda Singh ◽  
Francesca Templer ◽  
Benjamin Ondruschka ◽  
Niels Hammer
Keyword(s):  
Achilles Tendon ◽  
Soft Tissues ◽  
Plantar Fascia ◽  
Trabecular Architecture ◽  
Pathological Findings ◽  
Traction Forces ◽  
X Ray ◽  
Developmental Mechanism ◽  
Common Features ◽  
Compressive Loads

AbstractIt is unclear whether plantar and posterior heel spurs are truly pathological findings and whether they are stimulated by traction or compression forces. Previous histological investigations focused on either one of the two spur locations, thereby potentially overlooking common features that refer to a uniform developmental mechanism. In this study, 19 feet from 16 cadavers were X-ray scanned to preselect calcanei with either plantar or posterior spurs. Subsequently, seven plantar and posterior spurs were histologically assessed. Five spur-free Achilles tendon and three plantar fascia entheses served as controls. Plantar spurs were located either intra- or supra-fascial whereas all Achilles spurs were intra-fascial. Both spur types consistently presented a trabecular architecture without a particular pattern, fibrocartilage at the tendinous entheses and the orientation of the spur tips was in line with the course of the attached soft tissues. Spurs of both entities revealed tapered areas close to their bases with bulky tips. Achilles and plantar heel spurs seem to be non-pathological calcaneal exostoses, which are likely results of traction forces. Both spur types revealed commonalities such as their trabecular architecture or the tip direction in relation to the attached soft tissues. Morphologically, heel spurs seem poorly adapted to compressive loads.

scholarly journals Cell Traction Forces Direct Fibronectin Matrix Assembly

2009 ◽  
Vol 96 (2) ◽  
pp. 729-738 ◽  
Author(s):  
Christopher A. Lemmon ◽  
Christopher S. Chen ◽  
Lewis H. Romer
Keyword(s):  
Matrix Assembly ◽  
Traction Forces ◽  
Cell Traction Forces ◽  
Fibronectin Matrix ◽  
Cell Traction

scholarly journals Traction forces mediated by integrin signaling are necessary for definitive endoderm specification

2015 ◽  
Vol 128 (10) ◽  
pp. 1961-1968 ◽  
Author(s):  
H. Taylor-Weiner ◽  
N. Ravi ◽  
A. J. Engler
Keyword(s):  
Definitive Endoderm ◽  
Integrin Signaling ◽  
Traction Forces

Doctors of Chiropractic Proficiency in Delivering Prescribed Traction Forces During Manual Cervical Distraction of Neck Pain Patients

2014 ◽  
Vol 20 (5) ◽  
pp. A48-A49 ◽  
Author(s):  
Maruti Ram Gudavalli ◽  
Robert D Vining ◽  
Stacie A Salsbury ◽  
Lance Corber ◽  
Cynthia R Long ◽  
...  
Keyword(s):  
Neck Pain ◽  
Traction Forces ◽  
Pain Patients

Imaging Free Calcium in Cultured Aplysia Bag Cell Neurons

1991 ◽  
Vol 181 (2) ◽  
pp. 325-325 ◽  
Author(s):  
A. L. Miller ◽  
P. J. S. Smith ◽  
C. A. Rainville ◽  
O. Shimomura ◽  
F. Strumwasser ◽  
...  
Keyword(s):  
Free Calcium ◽  
Bag Cell Neurons

Prototype Design of a High-Speed Viscous Air Spindle

2008 ◽  
Author(s):  
Guido M. J. Delhaes ◽  
Anton van Beek ◽  
Ron A. J. van Ostayen ◽  
Robert H. Munnig Schmidt
Keyword(s):  
High Speed ◽  
Load Capacity ◽  
Axial Direction ◽  
Cylindrical Part ◽  
Traction Forces ◽  
Micro Cutting ◽  
Tool Holder ◽  
Air Spindle ◽  
Prototype Design

In this paper an innovative air driven spindle for micro cutting applications is presented. The spindle uses a viscous traction concept which has the advantage that the viscous traction forces can act directly on the cylindrical part of the tool, which makes the tool-holder redundant. Furthermore, the tool can be actuated in the axial direction within the housing. In this paper the concept of the viscous turbine, a design of a prototype spindle along with the traction and load-capacity of the spindle are discussed.

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