Ann Geriatr Med Res.  2019 Jun;23(2):83-89. 10.4235/agmr.19.0012.

Systemic and Local Phenotypes of Barium Chloride Induced Skeletal Muscle Injury in Mice

• Jung HW
• Choi JH
• Jo T
• Shin H
• Suh JM

• KMID: 2452843
• DOI: http://doi.org/10.4235/agmr.19.0012

Abstract

Skeletal muscle regeneration in mice has traditionally been studied using local freeze burn or snake venom injection models. More recently, a barium chloride (BaClâ‚‚)-induced muscle injury model has been established and is gaining popularity due to the relatively simple procedure and accessibility to required reagents. Here we sought to characterize the local and systemic effects of BaClâ‚‚-induced muscle injury. For this study, a 1.2% BaClâ‚‚ solution was locally administered to the tibialis anterior (TA) muscle and local and systemic phenotypes were analyzed at different timepoints. When 50 µL of the solution was injected unilaterally in the TA muscle, no mortality was observed. However, when 100 µL of the solution was injected, 50% of the mice died within 24 h. Serum analysis of the mice injected with 50 µL of BaClâ‚‚ solution at days 1 and 7 revealed changes resembling rhabdomyolysis. At day 1 post-injection of 50 µL of the BaClâ‚‚ solution, acute suppurative inflammation was observed in gross examination of the TA muscle, while extensive hemorrhagic necrosis was revealed on histological examination. At day 7, regenerated myofibers with centralized nuclei appeared with the resolution of acute inflammatory infiltration and the muscle tissue displayed molecular signatures consistent with myofiber differentiation. The overall muscle injury and regeneration phenotypes in the BaClâ‚‚-induced muscle injury model were similar to those of the well-established freeze burn or snake venom injection models. Taken together, the BaClâ‚‚-induced muscle injury model is comparable to conventional muscle injury and regeneration models, with considerations for possible systemic effects.

Keyword

Muscle regeneration; Barium chloride; Phenotype

MeSH Terms

Animals
Barium*
Burns
Indicators and Reagents
Inflammation
Mice*
Mortality
Muscle, Skeletal*
Necrosis
Phenotype*
Regeneration
Rhabdomyolysis
Snake Venoms
Barium
Indicators and Reagents
Snake Venoms