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Vol 50, No 1 (2012)
Original paper
Submitted: 2012-04-24
Accepted: 2012-04-24
Published online: 2012-04-25
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Mouse gastrocnemius muscle regeneration after mechanical or cardiotoxin injury

Areta M. Czerwinska, Wladyslawa Streminska, Maria A. Ciemerych, Iwona Grabowska
DOI: 10.5603/FHC.2012.0021
·
Folia Histochem Cytobiol 2012;50(1):144-153.

open access

Vol 50, No 1 (2012)
ORIGINAL PAPERS
Submitted: 2012-04-24
Accepted: 2012-04-24
Published online: 2012-04-25

Abstract

The goal of our study was to compare the skeletal muscle regeneration induced by two types of injury: either crushing, that causes muscle degeneration as a result of mechanical devastation of myofibers, or the injection of a cardiotoxin that is a myotoxic agent causing myolysis of myofibers leading to muscle degeneration. Regenerating muscles were analyzed at selected intervals, until the 14th day following the injury. We analyzed their weight and morphology. We also studied the expression of different myosin heavy chain isoforms as a molecular marker of the regeneration progress. Histological analysis revealed that inflammatory response and myotube formation in crushed muscles was delayed compared to cardiotoxin-injected ones. Moreover, the expression of myosin heavy chain isoforms was observed earlier in cardiotoxin-injured versus crushed muscles. We conclude that the dynamics of skeletal muscle regeneration depends on the method of injury.

Abstract

The goal of our study was to compare the skeletal muscle regeneration induced by two types of injury: either crushing, that causes muscle degeneration as a result of mechanical devastation of myofibers, or the injection of a cardiotoxin that is a myotoxic agent causing myolysis of myofibers leading to muscle degeneration. Regenerating muscles were analyzed at selected intervals, until the 14th day following the injury. We analyzed their weight and morphology. We also studied the expression of different myosin heavy chain isoforms as a molecular marker of the regeneration progress. Histological analysis revealed that inflammatory response and myotube formation in crushed muscles was delayed compared to cardiotoxin-injected ones. Moreover, the expression of myosin heavy chain isoforms was observed earlier in cardiotoxin-injured versus crushed muscles. We conclude that the dynamics of skeletal muscle regeneration depends on the method of injury.

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Keywords

Mouse; skeletal muscle; regeneration; cardiotoxin; myosin heavy chain

About this article
Title

Mouse gastrocnemius muscle regeneration after mechanical or cardiotoxin injury

Journal

Folia Histochemica et Cytobiologica

Issue

Vol 50, No 1 (2012)

Article type

Original paper

Pages

144-153

Published online

2012-04-25

Page views

4051

Article views/downloads

5211

DOI

10.5603/FHC.2012.0021

Bibliographic record

Folia Histochem Cytobiol 2012;50(1):144-153.

Keywords

Mouse
skeletal muscle
regeneration
cardiotoxin
myosin heavy chain

Authors

Areta M. Czerwinska
Wladyslawa Streminska
Maria A. Ciemerych
Iwona Grabowska

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