RESUMO
Six patients presented with clinical, biochemical and histological evidence of severe hepatitis after taking herbal remedies. One patient required urgent liver transplantation for fulminant hepatic failure after the brief use of black cohosh. Five patients took a combination of herbs and presented with jaundice, fatigue and pruritus. Healthcare providers and members of the public should be aware of the potential adverse effects of these remedies.
Assuntos
Doença Hepática Induzida por Substâncias e Drogas/etiologia , Cimicifuga/efeitos adversos , Preparações de Plantas/efeitos adversos , Adulto , Idoso , Anti-Inflamatórios/uso terapêutico , Doença Hepática Induzida por Substâncias e Drogas/tratamento farmacológico , Doença Hepática Induzida por Substâncias e Drogas/patologia , Feminino , Humanos , Transplante de Fígado , Masculino , Pessoa de Meia-Idade , Prednisona/uso terapêuticoRESUMO
BACKGROUND/AIMS: Concordance of iron indices between same-sex siblings homozygous for the cysteine-to-tyrosine substitution at amino acid 282 (C282Y) mutation suggests that the variable phenotype in hereditary hemochromatosis is caused by genetic factors. Concordance of iron indices between same-sex heterozygous sibling pairs would provide further evidence of genetic modifiers of disease expression, and guidance for family screening strategies of subjects heterozygous for the C282Y mutation. METHODS: We compared the iron indices of 35 C282Y homozygous and 35 C282Y heterozygous same-sex sibling pairs. To clarify whether concordance between siblings was due to environmental or genetic factors we compared the iron indices of 164 C282Y homozygous-normal, same-sex dizygotic twins. RESULTS: Serum ferritin (r=0.50, P=0.003), hepatic iron concentration (r=0.61, P=0.025) and hepatic iron index (r=0.67, P=0.01) were highly concordant in C282Y homozygotes. Heterozygote siblings were concordant for serum ferritin (r=0.76, P=0.0001) and transferrin saturation (r=0.79, P=0.0001). Homozygote-normal same-sex dizygotic twins were concordant for serum ferritin (r=0.62, P=0.0001) but not for transferrin saturation. CONCLUSIONS: Concordance of iron indices exists in C282Y homozygote and heterozygote sibling pairs. Siblings of expressing C282Y heterozygotes require phenotypic assessment. These data provide evidence for modifying genes influencing disease expression in hemochromatosis.