ABSTRACT
To analyze the mechanism of novel coronavirus prevention prescription in Hunan province by using network pharmacology method. Methods TCMSP, Batman-TCM and ETCM were used to retrieve drug composition and target information, and GeneCards, OMIM, DrugBank, TTD and PharmGkb were used to screen disease targets. The visualization network diagram of "drug-active component-target" was constructed by Cytoscape, the protein interaction network was drawn by STRING, the core targets of PPI network were analyzed by CytoNCA, GO function and KEGG pathway were analyzed, and the mechanism of action was predicted. Results A total of 418 active ingredients, 1 715 drug targets, 1 289 disease targets and 266 intersection targets were screened out. Quercetin, luteolin, kaempferol, baicalein, ursolic acid and naringin were identified as the key components, and 6 core targets were obtained: RELA, AKT1, STAT3, JUN, MAPK1 and MAPK3. The results of molecular docking showed that the binding potential and activity of the key active ingredients to the core target were good. Conclusions "Child prevention formula" has the characteristics of multi-target, multi-approach and multi-faceted prevention and treatment, which plays a role in prevention and treatment of COVID-19 among children.
ABSTRACT
Objective To explore the effect of intrauterin hypoxia on proliferation of neural stem cells(NSCs)in dentate gyrus of juve-nile rats and the interventive effects on NSCs.Methods Thirty-nine adult female SD rats bred at laboratory.At 14 days of pregnancy,conceiving female SD rats were randomly divided into 3 groups:control group(n=12),hypoxia group(n=12)and angelica group(n=15);the conceiving rats were put into 3 gases incubator(130 mL/L O2,temperature 25 ℃,relative humidity 70%-75%,CO2 0.3-0.4 mL/L),hypoxia times(2 h/d),hypoxia days(pregnant the 14th d,15th d,16th d)to make intrauterin hypoxia model.In hypoxia group,1 hour before hypoxia,the rats were injected saline from caudal vein,saline for 7 days;In angelica group,the rats were injected angelica injection,angelica for 7 days,other steps were same.In control group,the rats were injected saline,saline for 7 days,no hypoxia.Producing naturally,after born 40 days,took juvenile rats' brains from every group randomly:control group(n=12),hypoxia group(n=12)and angelica group(n=15),then immobilization,paraffin imbedding,slicing,common immunohistochemistry staining were used to detect the Nestin positive substances.Nestin positive substances expression were observed under the microscope(?200).Statistical analysis was used.Results The average of positive staining area(Area)of Nestin of hypoxic group were larger than that of control group,it had significance(P0.05),the average of density and IOD of 3 groups had no significances.Conclusion Hypoxia environment(130 mL/L)can promote NSCs of juvenile rats to proliferate,angelica injection can reduce the NSCs to proliferate after intrauterin hypoxia.