TAO Ling,BAI Dun-yao,ZANG Zhen-zhong,et al.Chronic Toxicity of Triptolide and Ferulic Acid Ethosomes Gel for Percutaneous Administration[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(07):95-104.
TAO Ling,BAI Dun-yao,ZANG Zhen-zhong,et al.Chronic Toxicity of Triptolide and Ferulic Acid Ethosomes Gel for Percutaneous Administration[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(07):95-104. DOI: 10.13422/j.cnki.syfjx.20220621.
Chronic Toxicity of Triptolide and Ferulic Acid Ethosomes Gel for Percutaneous Administration
To investigate the long-term safety of triptolide ferulic acid ethosome gel in percutaneous administration.
Method
2
We mixed triptolide with ferulic acid to make liposomes gel in different doses and then administrated the gel to SD rats of both sexes with intact skin and damaged skin for 12 weeks. The daily dosages calculated based on triptolide for the low-, middle-, and high-dose groups were 63.75, 127.50, 255.00 μg·kg
-1
, respectively. The body weight of each rat was measured weekly. The rats were sacrificed in the last week for the determination of serum biochemical parameters and organ indexes as well as the observation of histopathology. The toxicity was assessed based on the body weight and all the parameters and indexes.
Result
2
After long-term administration, the body weight and serum biochemical parameters did not show significant difference between the gel-treated groups and the blank group with intact skin, which indicated that the percutaneous administration of triptolide and ferulic acid ethosomes gel was relatively safe. However, the rats in the high-dose group showed sparse hair and were easy to die in the case of unhairing with chloral hydrate at the late stage of the study. Comprared with the female rats with intact skin in the blank control group, the female rats with damaged skin in the middle-dose group showed decreased heart index (
P
<
0.05), which indicated certain cardiotoxicity. Moreover, damage appeared in skin and lung, which may be influeneced by dosage, sex, and skin state.
Conclusion
2
Ferulic acid in combination with triptolide is relatively safe for percutaneous administration, whereas there are some risks of skin and lung damage in the case of long-term administration. Individualized administration scheme should be developed according to liver and kidney function and skin conditons to ensure the safety of clinical medication.
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