Saravia-Otten P, Robledo B, Escalante T, Bonilla L, Rucavado A, Lomonte B, Hernández R, Flock JI, Gutiérrez JM, Gastaldello S. Homogenates of skeletal muscle injected with snake venom inhibit myogenic differentiation in cell culture.
Muscle Nerve 2012;
47:202-12. [PMID:
23169301 DOI:
10.1002/mus.23489]
[Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2012] [Indexed: 11/10/2022]
Abstract
INTRODUCTION
Viperid snakebite envenomings are characterized by muscle necrosis and a deficient regenerative response.
METHODS
Homogenates from gastrocnemius muscles of mice injected with the venom of the snake Bothrops asper or with 2 tissue-damaging toxins were added to cultures of C2C12 myogenic cells. Myoblasts proliferation and fusion were assessed. Venom was detected by immunoassay in mouse muscle during the first week after injection.
RESULTS
Homogenates from venom-injected muscle induced a drop in the number of proliferating myoblasts and a complete elimination of myotube formation. The inhibitory effect induced by homogenates from venom-injected mice was abrogated by preincubation of the homogenate with antivenom antibodies but not with control antibodies. This finding provides evidence that the effect is due to the action of venom in the tissue.
CONCLUSIONS
Our observations suggest that traces of venom in muscle tissue might inhibit myotube formation and preclude a successful regenerative response.
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