Screening for occupational vitiligo in workers exposed to hydroquinone monomethyl ether and to paratertiary-amyl-phenol.

An Experimental Study on Depigmenting Activity of 4-(p-Hydroxyphenyl)-2-Butanone in C57 Black Mice

An Experimental Study on Depigmenting Activity of 4-(p-Hydroxyphenyl)-2-Butanone in C57 Black Mice: Depigmenting Activity of HPB in Black Mice: Yoshiharu FUKUDA, et al. Department of Public Health, Kumamoto University School of Medicine— The authors previously reported three cases of occupational leukoderma in workers engaged in a 4-(phydroxyphenyl)-2-butanone (HPB, Raspberry Ketone) manufactur...

Urinary excretion of phenol, catechol, hydroquinone, and muconic acid by workers occupationally exposed to benzene.

OBJECTIVES Animal inhalation studies and theoretical models suggest that the pattern of formation of benzene metabolites changes as exposure to benzene increases. To determine if this occurs in humans, benzene metabolites in urine samples collected as part of a cross sectional study of occupationally exposed workers in Shanghai, China were measured. METHODS With organic vapour monitoring badg...

Two cases of occupational leucoderma following contact with hydroquinone monomethyl ether.

Biological monitoring of petrochemical industry workers exposed to benzene, toluene, xylenes, methyl ethyl ketone, and phenol in Southern Iran

Background: Volatile organic compounds (VOCs), including carcinogens and toxic compounds, are produced in petrochemical industries. We undertook this study in order to study workers’ respiratory exposure to different VOC concentrations and compare the results with the urinary levels of its metabolites and study the correlation between them in petrochemical industries. Materials and Met...

Intralesional tranexamic acid as an effective treatment for repigmentation after depigmentation therapy with monobenzyl ether of hydroquinone: a case report

Vitiligo is a pigmentation disorder involving 1% of the population. One of the first line depigmenting agents is monobenzyl ether of hydroquinone (MBEH). Repigmentation following sun exposure; however, can occur after successful treatment with MBEH. This study describes a 54-year-old gentleman who presented with a 7-year history of hyperpigmented lesions on his face following depigmentati...