Premium
Increased bioavailability of hydrocortisone dissolved in a cream base
Author(s) -
Greive Kerryn A,
Barnes Tanya M
Publication year - 2015
Publication title -
australasian journal of dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.67
H-Index - 53
eISSN - 1440-0960
pISSN - 0004-8380
DOI - 10.1111/ajd.12128
Subject(s) - hydrocortisone , medicine , blanching , transepidermal water loss , bioavailability , anesthesia , chemistry , pharmacology , food science , stratum corneum , pathology
Background/Objectives The aim of this study was to compare vasoconstrictor activity and, by inference, the clinical anti‐inflammatory effectiveness of hydrocortisone in two different formulations: 1% dissolved hydrocortisone cream and 1% dispersed hydrocortisone cream. Moisturising capacity and safety were also determined. Methods Both topical preparations were applied without occlusion on forearms twice daily for 5 days. An assessment of vasoconstriction was performed in a double‐blinded manner pretreatment and then thrice daily for 6 days and once 7 days post‐application, using an objective rating scale. For the dissolved preparation only, moisturising capacity was determined by measurement of transepidermal water loss ( TEWL ) at 0, 2, 4, 6 and 24 h, and also by the measurement of water content at 0 and 24 h. Safety was assessed by repeat insult patch tests ( RIPT ). Results In all, 10 volunteers completed the vasoconstrictor and moisturising studies, while 52 completed the RIPT . For 1% dissolved hydrocortisone cream and 1% dispersed hydrocortisone cream, respectively, areas under the blanching curves were 1240 and 295; total scores were 129.0 and 31.5; summed % total possible scores were 161.3 and 39.4; T m/10 mean values were 3.47 and 1.64. The 1% dissolved hydrocortisone cream was found to be statistically more potent than the 1% dispersed hydrocortisone cream. Furthermore, the 1% dissolved hydrocortisone cream was found to be moisturising compared to no treatment. No adverse events were observed. Conclusions A cream containing 1% dissolved hydrocortisone exhibits greater vasoconstrictor activity than a cream containing 1% dispersed hydrocortisone.