LENG Ling, CUI Zhenze, HUANG Yan. Effect of Dingchuan Decoction (定喘汤) on Cell Immunoregulation in Respiratory Syncytial Virus Infected Rats[J]. Journal of Traditional Chinese Medicine2018, 59(14): 1223-1227.
LENG Ling, CUI Zhenze, HUANG Yan. Effect of Dingchuan Decoction (定喘汤) on Cell Immunoregulation in Respiratory Syncytial Virus Infected Rats[J]. Journal of Traditional Chinese Medicine2018, 59(14): 1223-1227.DOI: 10.13288/j.11-2166/r.2018.14.013.
Objective To investigate the effect of Dingchuan Decoction( 定 喘汤) on viral load and cellular immunity of respiratory syncytial virus( RSV) infected pneumonia rats. Methods A total of 36 wistar rats were divided into normal group
model group
ribavirin group and Dingchuan Decoction group with 9 rats for each group.Except for the normal group
rats in the other groups were treated with RSV Long strain virus liquid by intranasal route to prepare RSV infected rat models. After modeling
Dingchuan Decoction group was given Dingchuan Decoction 2 g/( kg·d)
ribavirin group was given ribavirin granules 1 mg/( kg·d)
and normal group as well as model group were given intragastric administration of equal volume of normal saline once a day for 7 days. On the 3 rd
5 th and 7 th day
changes of virus load and CD3
+
CD4
+
CD8
+
and CD4
+
/CD8
+
were observed
respectively. Results Level of viurs load in lung tissue in Dingchuan Decoction group and ribavirin group determined at all time point was lower than that in model group( P
<
0. 05). Compared with the normal group
level of CD3
+
on the 3 rd and 5 th day
level of CD4
+
on the 5 th day
level of CD8
+
on the 5 th and 7 th day as well as ratio of CD4
+
/CD8
+
on the 7 th day in the model group were decreased( P
<
0. 05). There was no significant difference in all indexes at all time point between Dingchuan Decoction group and ribavirin group( P
>
0. 05). On the 5 th day
level of CD8
+
in ribavirin group and Dingchuan Decoction group decreased while level of CD3
+
in Dingchuan Decoction group increased as compared with those on the 3 rd day in the same group( P
<
0. 05). On the 7 th day
level of CD4
+
and CD8
+
in ribavirin group and Dingchuan Decoction group increased as compared with those on the 5 rd day in the same group( P
<
0. 05).Conclusion Dingchuan Decoction can effectively reduce the viral load of RSV infected rats and it can regulate the immune inpressing cell in peripheral blood infected