https://www.selleckchem.com/products/Bortezomib.html c.v) 30 min before sildenafil administration significantly reduced the CN activity. Also, the subeffective dose of CN inhibitor cyclosporine (5 mg/kg) 30 min before the administration of effective dose of sildenafil (40 mg/kg) reversed proconvulsant actions of sildenafil. This effect was iNOS-dependent because pretreatment of a low dose of aminoguanidine (20 mg/kg) 15 min before the administration of a low dose of cyclosporine (1 mg/kg) reversed the proconvulsant action of sildenafil (40 mg/kg). Finally, sildenafil induced the elevation of tumor necrosis factor alpha (TNF-α) and the nitrite level was blocked by the administration of cyclosporine in PTZ-treated mice. Collectively, our data provide insights into the role of OXT receptor/CN/iNOS pathway in the proconvulsant aspect of sildenafil. Previously, we reported a novel iflavirus in Helicoverpa armigera (helicoverpa armigera iflavirus, HaIV) and here we report the effects of HaIV on its host. In a laboratory bioassay, HaIV-positive larvae and pupae developed more slowly and had higher mortality than HaIV-negative larvae, suggesting that the virus is pathogenic. The relative fitness of H. armigera decreased with HaIV infection by a ratio of 0.65. Transcriptional analysis indicated that infection significantly changed the expression levels of host genes, with more genes affected at 72 h after inoculation than at 48 h (138 up- and 229 downregulated at 48 h; 185 up- and 299 downregulated at 72 h). Interestingly, pathways related to digestion and absorption were significantly enriched, e.g., protein digestion and absorption, suggesting developmental regulation of the host by HaIV via these pathways. HaIV-infected H. armigera showed significantly downregulated expression of genes encoding cuticular proteins (CPs), essential for structural and protective functions, at 48 h and 72 h, suggesting that HaIV increased larval mortality by downregulating CP gene expression.