scholarly journals Potassium initiates vasodilatation induced by a single skeletal muscle contraction in hamster cremaster muscle

2007 ◽  
Vol 581 (2) ◽  
pp. 841-852 ◽  
Author(s):  
Marika L. Armstrong ◽  
Ashok K. Dua ◽  
Coral L. Murrant
Keyword(s):  
Skeletal Muscle ◽  
Muscle Contraction ◽  
Cremaster Muscle ◽  
Skeletal Muscle Contraction

Local and remote arteriolar dilations initiated by skeletal muscle contraction

2000 ◽  
Vol 279 (5) ◽  
pp. H2285-H2294 ◽  
Author(s):  
Coral L. Murrant ◽  
Ingrid H. Sarelius
Keyword(s):  
Skeletal Muscle ◽  
Muscle Contraction ◽  
Muscle Fibers ◽  
Muscle Metabolism ◽  
Cremaster Muscle ◽  
Remote Site ◽  
Upstream Site ◽  
Skeletal Muscle Contraction ◽  
Perivascular Nerves ◽  
The Relationship

To investigate the relationship between skeletal muscle metabolism and arteriolar dilations in the region local to contracting muscle fibers as well as dilations at remote arteriolar regions upstream, we used a microelectrode on cremaster muscle of anesthetized hamsters to stimulate four to five muscle fibers lying approximately perpendicular to and overlapping a transverse arteriole. Before, during, and after muscle contraction, we measured the diameter of the arteriole at the site of muscle fiber overlap (local) and at a remote site ∼1,000 μm upstream. Two minutes of 2-, 4-, or 8-Hz stimulation (5–10 V, 0.4-ms duration) produced a significant dilation locally (8.2 ± 2.0-, 22.5 ± 2.4-, and 30.9 ± 2.1-μm increase, respectively) and at the remote site (4.2 ± 0.8, 11.0 ± 1.1, and 18.9 ± 2.7 μm, respectively). Muscle contraction at 4 Hz initiated a remote dilation that was unaffected by 15-min micropipette application of either 2 μM tetrodotoxin, 0.07% halothane, or 40 μM 18-β-glycyrrhetinic acid between the local and upstream site. Therefore, at the arteriolar level, muscle contraction initiates a robust remote dilation that does not appear to be transmitted via perivascular nerves or gap junctions.

Skeletal muscle contraction in healthy volunteers: assessment with Doppler tissue imaging.

Radiology ◽  
1995 ◽  
Vol 194 (3) ◽  
pp. 837-842 ◽  
Author(s):  
N R Grubb ◽  
A Fleming ◽  
G R Sutherland ◽  
K A Fox
Keyword(s):  
Skeletal Muscle ◽  
Muscle Contraction ◽  
Healthy Volunteers ◽  
Tissue Imaging ◽  
Doppler Tissue Imaging ◽  
Skeletal Muscle Contraction

Thermodynamic and Mechanical Properties of Skeletal Muscle Contraction

2005 ◽  
Vol 26 (3) ◽  
pp. 827-835 ◽  
Author(s):  
Yu. I. Prylutskyy ◽  
A. M. Shut ◽  
M. S. Miroshnychenko ◽  
A. D. Suprun
Keyword(s):  
Mechanical Properties ◽  
Skeletal Muscle ◽  
Muscle Contraction ◽  
Skeletal Muscle Contraction

Modulation effects of cordycepin on the skeletal muscle contraction of toad gastrocnemius muscle

2014 ◽  
Vol 726 ◽  
pp. 9-15 ◽  
Author(s):  
Li-Hua Yao ◽  
Wei Meng ◽  
Rong-Feng Song ◽  
Qiu-Ping Xiong ◽  
Wei Sun ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Muscle Contraction ◽  
Gastrocnemius Muscle ◽  
Skeletal Muscle Contraction
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