Although Sasa quelpaertensis Nakai, a dwarf bamboo, is known to exert a variety of beneficial effects on health, its antiviral effect remains to be elucidated. Porcine reproductive and respiratory syndrome virus (PRRSV) is one of the most devastating viral pathogens of swine and has a substantial economic impact on the global pork industry. Therefore, the present study was conducted to determine whether Sasa quelpaertensis Nakai extract (SQE) inhibits PRRSV infection in cultured porcine alveolar macrophages (PAMs). Our results demonstrated that SQE treatment suppressed the replication of PRRSV in a dose-dependent manner. The antiviral activity of SQE on PRRSV replication was found to be primarily exerted at early times postinfection. Treatment with SQE resulted in marked reduction of viral genomic and subgenomic RNA synthesis, viral protein expression, and progeny virus production. Notably, pro-inflammatory cytokine production in PAM cells infected with PRRSV was shown to be modulated in the presence of SQE. Taken together, our data indicate that SQE has potential as a therapeutic agent against PRRSV.
Archives of Virology – Springer Journals
Published: Jun 6, 2015
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