Objective

2

To observe the effect of different doses of Fufang Huangbaiye Tuji asin the treatment onof the inflammatory response in healing process for of skin with deep Ⅱ degree burn. Methods in healing process.

Methods

2

The 120 cses patients with deep Ⅱ degree burn of fire-toxin injuring fluid syndrome diagnosed in the affiliated hospital of Chengde Medical University between June 2019 and March 2020 were randomly divided into control group，low -dose treatment group and high -dose treatment group，with 40 cases in each group and once. They got a dressing change perevery day. Control group was locally administered with lodophor solution 35 mL per 1% on the body surface area. Low-dose treatment group was locally administered with compound cortex phellodendri fluid 17.5 mL per 1% on the body surface area，while high-dose treatment group was locally administered with compound cortex phellodendri fluid 35 mL per 1% on the body surface area. Observe theThe inflammatory reaction of wound surface in each group onwas observed at admission and after treatment. The pathological changes of each groupsgroup were observed， and determination of nuclear factor kappa-B（NF-

κ

B） p65 expression inon the wound surface was determined by immunohistochemistry on the 4th day after the treatment. The levels of interleukin（IL）-2，IL-8 and tumor necrosis factor（TNF）-α in wound tissue were measured with ELISA and Bacterial culture and count were performed in each group on the 4

th

，10

th

and 21

st

daydays after treatment. The levels of IL-2，IL-8 and TNF-α in wound tissue were measured with ELISA.

Results

2

There was no significant difference in the degree of wound inflammation in each group at admission，and the degree of relief after treatment was positively correlated with the treatment time. At the simultaneous phase point，the inflammatory reaction was severest in control group，which was followed by low-dose treatment group and high-dose treatment group. Bacterial growth were observed on the 4

th

day in control group，which was found in low-dose and high-dose treatment groups on the 10

th

day，the detection rates of Staphylococcus aureus and Pseudomonas aeruginosa were the highest. Compared with control group，the mean integrated optical density of NF-

κ

B p65 in wound tissue decreased markedly in low-dose and high-dose treatment groups on the 4th day after treatment（

P

<

0.05），the bacterial count decreased significantly in low-dose and high-dose treatment groups on the 10

th

and 21

st

days after treatment（

P

<

0.05），and the levels of IL-2，IL-8 and TNF-

α

in wound tissue decreased markedly in low-dose and high-dose treatment groups on the 4

th

，10

th

and 21

st

days after treatment（

P

<

0.05），with statistically significant differences between low-dose and high-dose treatment groups（

P

<

0.05）. Histopathological examination showed that inflammatory granulocytes and edema were improved in low-dose and high-dose treatment groups compared with control group，with a more significant performance in high-dose treatment group.

Conclusion

2

The external application of compound cortex phellodendri fluid can reduce thebacterial growth of bacteria in on the wound surface，which may reduce the inflammatory reaction by inhibiting the production and release of inflammatory mediators，with a certain dose-effcteffect relationship，and is worth clinical promotion.