Sialidase-based anti-influenza virus therapy protects against secondary pneumococcal infection.
Sialidase-based anti-influenza virus therapy protects against secondary pneumococcal infection.
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DOI:
10.1086/651170
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发表时间:
2010-04-01
期刊:
影响因子:
--
通讯作者:
Fang F
中科院分区:
文献类型:
--
作者:
Hedlund M;Aschenbrenner LM;Jensen K;Larson JL;Fang F
DAS181 (Fludase®) is a sialidase fusion protein in clinical development as a broad-spectrum anti-influenza virus (IFV) therapeutics. Previous reports by others raised the concern that desialylation of airway epithelium might increase the susceptibility to Streptococcus pneumoniae infection. To address if DAS181 would lead to increased risk of pneumococcal infection, we tested S. pneumoniae colonization following DAS181 treatment of human A549 cells, healthy mice, and mice challenged with a lethal dose of IFV A/PR/8/34 (H1N1) or A/Victoria/3/75 (H3N2) followed by 104 cfu S. pneumoniae (D39) on day 3 or day 7. DAS181 treatment was given 24–48 hr after IFV challenge. DAS181 treatment did not increase S. pneumoniae colonization in vitro or in vivo in healthy animals. In IFV infected mice, DAS181 prevented pneumonia and significantly prolonged survival and inhibited IFV virus titer by ≥3 logs. None of the treated animals showed enhanced S. pneumoniae lung colonization. Additionally, opportunistic infections by Citrobacter ssp or Klebsiella ssp occurred only in mice receiving vehicle, not in DAS181 treated animals. These data indicate that DAS181 treatment does not exacerbate secondary bacterial infection in mice. DAS181 may reduce the risk of secondary bacterial infection by inhibiting IFV.
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DOI:
10.1086/591708
发表时间:
2008-10-01
期刊:
The Journal of infectious diseases
影响因子:
--
作者:
Morens DM;Taubenberger JK;Fauci AS
通讯作者:
Fauci AS
影响因子:
6.4
作者:
Peltola, VT;Murti, KG;McCullers, JA
通讯作者:
McCullers, JA
影响因子:
3.8
作者:
Ah-Tye, C;Schwartz, S;Moscona, A
通讯作者:
Moscona, A
影响因子:
3.6
作者:
King, SJ;Hippe, KR;Weiser, JN
通讯作者:
Weiser, JN
影响因子:
6.4
作者:
McCullers, JA;Bartmess, KC
通讯作者:
Bartmess, KC