Rong-mei YAO, Xin MAO, Tian-ge QU, et al. Effect of Chuankezhi Injection on Prevention and Treatment of H1N1 Influenza Virus in Mice[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(12): 43-49.
DOI:
Rong-mei YAO, Xin MAO, Tian-ge QU, et al. Effect of Chuankezhi Injection on Prevention and Treatment of H1N1 Influenza Virus in Mice[J]. Chinese journal of experimental traditional medical formulae, 2019, 25(12): 43-49. DOI: 10.13422/j.cnki.syfjx.20191236.
Effect of Chuankezhi Injection on Prevention and Treatment of H1N1 Influenza Virus in Mice
To evaluate the effect of Chuankezhi injection on mouse model of pneumonia induced by influenza A (H1N1) FM1 strain.
Method:
2
ICR mice were randomly divided into normal group
model group
tamiflu control group (27.5 mg·kg
-1
·d
-1
) and Chuankezhi injection group (1.5 mL·kg
-1
·d
-1
). In the death protection experiment
mice were infected with 2×half lethal dose (LD
50
) of influenza virus FM1.The Chuankezhi injection was given once a day for 4 days. The number of death animal within 14 days was counted. The mortality and the death protection rate were calculated. In the treatment experiment
mice were infected with 0.8×LD
50
of influenza virus
and the Chuankezhi injection was given once a day for 4 days. On the 5
th
day after the infection
the levels of interleukin-8 (IL-8) in lung
prostaglandin E
2
(PGE
2
) and vasopressin (AVP) in brain were tested by enzyme-linked immunosorbent assay (ELISA). The viral load of influenza virus in lung was tested by Real-time PCR. In the pre-treatment experiment
mice were given Chuankezhi injection once a day for 5 days. 1 hour after the last treatment
mice were infected with 0.8×LD
50
influenza virus. 4 days after the infection
the lung index
spleen index
thymus index
and viral load in lung tissue were calculated.
Result:
2
Compared with normal group
the IL-8
PGE
2
content
lung index and viral load in the lung tissue of model group were significantly increased (
P
<
0.01). Compared with model group
Treatment of Chuankezhi injection could reduce the rate of deaths. Significantly inhibit the level of IL-8
PGE
2
and the viral load of influenza(
P
<
0.05
P
<
0.01). Pre-treatment of Chuankezhi injection could significantly increase the thymus index of infected mice(
P
<
0.01)
reduce lung index and the viral load of influenza(
P
<
0.05). Both administration methods can significantly reduce the infiltration of inflammatory cells in the bronchial
perivascular and alveolar interstitium and reduce the exudation of red blood cells in the lumen.
Conclusion:
2
Chuankezhi injection could effectively prevent the mouse model of pneumonia induced by influenza A (H1N1) virus. The mechanism might be related to the reduction of inflammation and inhibiting viral replication.
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Related Institution
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Tianjin University of Traditional Chinese Medicine(TCM)