Blocking or enhancing effects of some basic emollients in UVA penetration
An. bras. dermatol
; 93(2): 238-241, Mar.-Apr. 2018. tab, graf
Article
em En
| LILACS
| ID: biblio-887175
Biblioteca responsável:
BR1.1
ABSTRACT
Abstract Background:
Topical agents used in combination with phototherapy or photochemotherapy may have both blocking or enhancing effects in ultraviolet rays.Objective:
In this in vivo study, the effects of topical petrolatum, basis cream, glycerine, and olive oil on the transmission of ultraviolet A radiation were investigated.Methods:
A test was performed to determine the minimal phototoxic dose on 29 volunteers with only psoralen plus ultraviolet A (PUVA) and then the same test was repeated with white petrolatum, basis cream, glycerine, olive oil, and sunscreen (0.3cc/25cm2). The effects of each agent on the minimal phototoxic dose were determined after 72 h.Results:
When compared to pure PUVA, there was a statistically significant increase in the mean minimal phototoxic dose values by the application of white petrolatum (P = 0.011), but there was no significant increase or decrease in the mean minimal phototoxic dose values after the application of basis cream (P = 0.326), glycerine (P = 0.611) or olive oil (P = 0.799). Studylimitations:
Low number of patientsConclusion:
The application of white petrolatum, which has a blocking effect, and also of basis cream immediately before PUVA therapy should not be recommended. Although we specify that glycerine and maybe olive oil can be used before photochemotherapy, there is a need for further research in larger series.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Temas:
Aperfeicoar_gestao_SUS
Base de dados:
LILACS
Assunto principal:
Vaselina
/
Fotoquimioterapia
/
Terapia PUVA
/
Dermatopatias
/
Raios Ultravioleta
/
Fármacos Fotossensibilizantes
/
Emolientes
Tipo de estudo:
Clinical_trials
/
Evaluation_studies
Limite:
Humans
Idioma:
En
Revista:
An. bras. dermatol
Ano de publicação:
2018
Tipo de documento:
Article