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• W2805103910 abstract "Porcine Reproductive and Respiratory Syndrome (PRRS), caused by PRRS virus (PRRSV), is one of the most important devastating diseases of pigs, characterized by reproductive failure in sows, and respiratory disease with heavy mortality in piglets. PRRS virus has been reported to elevate the levels of proinflammatory cytokines in the serum of infected pigs. High Mobility Group Box-1 (HMGB-1) protein is a cellular biomolecule belonging to the Danger Associated Molecular Patterns (DAMP) family, which stimulates immune cells to release pro-inflammatory cytokines upon release out of cells. The role of HMGB-1 in the pathogenesis of PRRSV remains largely unknown. In the present study, HMGB-1 levels in serum samples collected from six-week-old piglets infected intra-nasally with 2 × 105.75 TCID50/mL of Indian PRRSV (Ind-297221/2013) was estimated by ELISA up to 21 days post infection (dpi). Pro-inflammatory cytokine mRNA (IL-1β, IL-6 and TNF- α) expression in PBL was estimated by SYBR green based real time PCR. Mean HMGB-1 concentration in serum was found to be significantly elevated in PRRSV infected piglets on 6 dpi as compared to uninfected control piglets. At mRNA level, significant increase in expression of HMGB-1 was observed from 4 to 5 dpi and from 11 to 13 dpi. IL-1β and IL-6 mRNA were significantly upregulated between 4 and 6 dpi. Significant increase in TNF-α gene expression was seen only on 7 and 9 dpi. Higher levels of pro-inflammatory cytokines and HMGB-1 could be correlated with fever which was observed within 7 dpi in all the infected piglets and additionally around 13 dpi in the animal that died on 17 dpi. Thus, elevated HMGB-1 level in PRRSV infected piglets could be correlated with concurrent increase in pro-inflammatory cytokine (IL-6) mRNA. In-vitro studies were conducted in PRRSV infected Porcine Pulmonary Alveolar Macrophages (PAM) to ascertain HMGB-1 role in PRRS pathogenesis. The results of both in-vivo and in-vitro studies showed that HMGB-1 plays an important role in mediating the pro-inflammatory cytokine responses in PRRS pathogenesis." @default.
• W2805103910 created "2018-06-13" @default.
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• W2805103910 date "2019-01-01" @default.
• W2805103910 modified "2023-09-30" @default.
• W2805103910 title "Porcine reproductive and respiratory syndrome virus induces concurrent elevation of High Mobility Group Box-1 protein and pro-inflammatory cytokines in experimentally infected piglets" @default.
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• W2805103910 doi "https://doi.org/10.1016/j.cyto.2018.06.002" @default.
• W2805103910 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29895396" @default.
• W2805103910 hasPublicationYear "2019" @default.
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