tetano
Editor, Senior Moderator
PLoS One. 2015 Feb 27;10(2):e0117846. doi: 10.1371/journal.pone.0117846. eCollection 2015.
[h=1]Clinical, Virological and Immunological Features from Patients Infected with Re-Emergent Avian-Origin Human H7N9 Influenza Disease of Varying Severity in Guangdong Province.[/h] Yang ZF[SUP]1[/SUP], Mok CK[SUP]2[/SUP], Liu XQ[SUP]1[/SUP], Li XB[SUP]3[/SUP], He JF[SUP]4[/SUP], Guan WD[SUP]1[/SUP], Xu YH[SUP]1[/SUP], Pan WQ[SUP]1[/SUP], Chen LY[SUP]1[/SUP], Lin YP[SUP]1[/SUP], Wu SG[SUP]1[/SUP], Pan SH[SUP]1[/SUP], Huang JC[SUP]3[/SUP], Ding GY[SUP]3[/SUP], Zheng K[SUP]3[/SUP], Ke CW[SUP]4[/SUP], Lin JY[SUP]4[/SUP], Zhang YH[SUP]4[/SUP], Lee HH[SUP]2[/SUP], Liu WK[SUP]1[/SUP], Yang CG[SUP]1[/SUP], Zhou R[SUP]1[/SUP], Peiris JS[SUP]2[/SUP], Li YM[SUP]1[/SUP], Chen RC[SUP]1[/SUP], Chen L[SUP]1[/SUP], Zhong NS[SUP]1[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] [h=4]BACKGROUND:[/h] The second wave of avian influenza H7N9 virus outbreak in humans spread to the Guangdong province of China by August of 2013 and this virus is now endemic in poultry in this region.
[h=4]METHODS:[/h] Five patients with H7N9 virus infection admitted to our hospital during August 2013 to February 2014 were intensively investigated. Viral load in the respiratory tract was determined by quantitative polymerase chain reaction (Q-PCR) and cytokine levels were measured by bead-based flow cytometery.
[h=4]RESULTS:[/h] Four patients survived and one died. Viral load in different clinical specimens was correlated with cytokine levels in plasma and broncho-alveolar fluid (BALF), therapeutic modalities used and clinical outcome. Intravenous zanamivir appeared to be better than peramivir as salvage therapy in patients who failed to respond to oseltamivir. Higher and more prolonged viral load was found in the sputum or endotracheal aspirates compared to throat swabs. Upregulation of proinflammatory cytokines IP-10, MCP-1, MIG, MIP-1α/β, IL-1β and IL-8 was found in the plasma and BALF samples. The levels of cytokines in the plasma and viral load were correlated with disease severity. Reactivation of herpes simplex virus type 1(HSV-1) was found in three out of five patients (60%).
[h=4]CONCLUSION:[/h] Expectorated sputum or endotracheal aspirate specimens are preferable to throat swabs for detecting and monitoring H7N9 virus. Severity of the disease was correlated to the viral load in the respiratory tract as well as the extents of cytokinemia. Reactivation of HSV-1 may contribute to clinical outcome.
PMID: 25723593 [PubMed - in process] Free full text
[h=1]Clinical, Virological and Immunological Features from Patients Infected with Re-Emergent Avian-Origin Human H7N9 Influenza Disease of Varying Severity in Guangdong Province.[/h] Yang ZF[SUP]1[/SUP], Mok CK[SUP]2[/SUP], Liu XQ[SUP]1[/SUP], Li XB[SUP]3[/SUP], He JF[SUP]4[/SUP], Guan WD[SUP]1[/SUP], Xu YH[SUP]1[/SUP], Pan WQ[SUP]1[/SUP], Chen LY[SUP]1[/SUP], Lin YP[SUP]1[/SUP], Wu SG[SUP]1[/SUP], Pan SH[SUP]1[/SUP], Huang JC[SUP]3[/SUP], Ding GY[SUP]3[/SUP], Zheng K[SUP]3[/SUP], Ke CW[SUP]4[/SUP], Lin JY[SUP]4[/SUP], Zhang YH[SUP]4[/SUP], Lee HH[SUP]2[/SUP], Liu WK[SUP]1[/SUP], Yang CG[SUP]1[/SUP], Zhou R[SUP]1[/SUP], Peiris JS[SUP]2[/SUP], Li YM[SUP]1[/SUP], Chen RC[SUP]1[/SUP], Chen L[SUP]1[/SUP], Zhong NS[SUP]1[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] [h=4]BACKGROUND:[/h] The second wave of avian influenza H7N9 virus outbreak in humans spread to the Guangdong province of China by August of 2013 and this virus is now endemic in poultry in this region.
[h=4]METHODS:[/h] Five patients with H7N9 virus infection admitted to our hospital during August 2013 to February 2014 were intensively investigated. Viral load in the respiratory tract was determined by quantitative polymerase chain reaction (Q-PCR) and cytokine levels were measured by bead-based flow cytometery.
[h=4]RESULTS:[/h] Four patients survived and one died. Viral load in different clinical specimens was correlated with cytokine levels in plasma and broncho-alveolar fluid (BALF), therapeutic modalities used and clinical outcome. Intravenous zanamivir appeared to be better than peramivir as salvage therapy in patients who failed to respond to oseltamivir. Higher and more prolonged viral load was found in the sputum or endotracheal aspirates compared to throat swabs. Upregulation of proinflammatory cytokines IP-10, MCP-1, MIG, MIP-1α/β, IL-1β and IL-8 was found in the plasma and BALF samples. The levels of cytokines in the plasma and viral load were correlated with disease severity. Reactivation of herpes simplex virus type 1(HSV-1) was found in three out of five patients (60%).
[h=4]CONCLUSION:[/h] Expectorated sputum or endotracheal aspirate specimens are preferable to throat swabs for detecting and monitoring H7N9 virus. Severity of the disease was correlated to the viral load in the respiratory tract as well as the extents of cytokinemia. Reactivation of HSV-1 may contribute to clinical outcome.
PMID: 25723593 [PubMed - in process] Free full text