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Abstract Title:

Stevioside Enhances Satellite Cell Activation by Inhibiting of NF-κB Signaling Pathway in Regenerating Muscle after Cardiotoxin-Induced Injury.

Abstract Source:

J Agric Food Chem. 2012 Feb 9. Epub 2012 Feb 9. PMID: 22316332

Abstract Author(s):

Tipwadee Bunprajun, Tossaporn Yimlamai, Sunhapas Soodvilaia, Chatchai Muanprasat, Varanuj Chatsudthipong

Abstract:

Stevioside, a noncaloric sweetener isolated fromStevia rebaudiana, exhibits anti-inflammatory and immunomodulatory effects through interference of nuclear factor (NF)-kappa B pathway. We investigated whether this anti-inflammatory property of stevioside could improve muscle regeneration following cardiotoxin-induced muscle injury. Adult male Wistar rats received stevioside orally at an accepted daily dosage of 10 mg kg-1for 7 days before cardiotoxin injection at tibialis anterior (TA) muscle of right hindlimb (the left hindlimb served as control) and stevioside administration was continued for 3 and 7 days. TA muscle was examined at days 3 and 7 post injury. Although stevioside treatment had no significant effect in enhancing muscle regeneration as indicated by the absence of decreased muscle inflammation or improved myofibrillar protein content compared with vehicle treated injured group at day 7 post injury, the number of MyoD-positive nuclei were increased (P<0.05), with a corresponding decrease in NF-κB nuclear translocation (P<0.05). This is the first study to demonstrate that stevioside could enhance satellite cell activation by modulation of NF-κB signaling pathway in regenerating muscle following injury. Thus, stevioside may be beneficial as a dietary supplementation for promoting muscle recovery from injury. However, its pharmacological effect on muscle function recovery warrants further investigation.

Study Type : Animal Study

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Sayer Ji
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