Percutaneous absorption of salicylic Acid after administration of trolamine salicylate cream in rats with transcutol((R)) and eucalyptus oil pre-treated skin.

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Sajjadi P, Khodayar MJ, Sharif Makhmalzadeh B, Rezaee S

Percutaneous absorption of salicylic Acid after administration of trolamine salicylate cream in rats with transcutol((R)) and eucalyptus oil pre-treated skin.

Adv Pharm Bull. 2013;3(2):295-301. doi: 10.5681/apb.2013.048. Epub 2013 Aug 20.

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24312851 [ View in PubMed
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Abstract

PURPOSE: This study was conducted to assess the effect of skin pre-treatment with Transcutol((R)) and eucalyptus oil on systemic absorption of topical trolamine salicylate in rat. METHODS: Pharmacokinetic parameters of salicylic acid following administration of trolamine salicylate on rat skin pre-treated with either Transcutol((R)) or eucalyptus oil were determined using both non-compartmental and non-linear mixed effect modeling approaches and compared with those of control group. RESULTS: Median (% of interquartile range/median) of salicylic acid AUC0-8hr (ng/mL/hr) values in Transcutol((R)) or eucalyptus oil treated rats were 2522(139%) and 58976(141%), respectively as compared to the 3023(327%) of the control group. Skin pre-treatment with eucalyptus oil could significantly decrease extravascular volume of distribution (V/F) and elimination rate constant (k) of salicylic acid. CONCLUSION: Unlike Transcutol((R)), eucalyptus oil lead to enhanced transdermal absorption of trolamine salicylate through rat skin.

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