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2.
Int J Dermatol ; 46(6): 637-48, 2007 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-17550570

RESUMO

BACKGROUND: Rebound in psoriasis is, by definition, a rapid worsening of disease following the discontinuation of therapy for psoriasis; it occurs following the abrupt discontinuation of many therapies. To prevent rebound on discontinuation of efalizumab, this study evaluated the effectiveness of transitioning patients to an alternative psoriasis therapy. METHODS: Patients (n = 130) received subcutaneous efalizumab 1 mg/kg/week for 12 weeks. Efalizumab was discontinued at 12 weeks; patients were evaluated for improvement from baseline in the Psoriasis Area and Severity Index (PASI) and a 12-week transition period was begun. Patients who achieved PASI improvement of 75% or more (PASI-75) at week 12 of efalizumab treatment were observed during the transition period and treated only if psoriasis recurred. Patients who did not attain PASI-75 at week 12 of efalizumab treatment were immediately transitioned to an alternative psoriasis therapy at the physician's discretion. All patients were evaluated for signs of rebound following efalizumab discontinuation. RESULTS: Rebound was not observed in any PASI-75 responder (n = 46). Rebound was observed in two of 32 patients who achieved between PASI-50 and PASI-75, and was more common in nonresponders (14/49). Rebound was observed in none of the eight patients treated with cyclosporine and in two of the 12 patients treated with methotrexate during the transition period. CONCLUSIONS: These results suggest that efalizumab-responsive patients are less likely to experience rebound than nonresponders and may not require treatment until disease recurrence following efalizumab discontinuation. Efalizumab nonresponders are at higher risk of developing rebound and thus should be considered for transition to an appropriate psoriasis therapy immediately following efalizumab discontinuation.


Assuntos
Anticorpos Monoclonais/uso terapêutico , Fármacos Dermatológicos/uso terapêutico , Psoríase/tratamento farmacológico , Adolescente , Adulto , Idoso , Anticorpos Monoclonais/efeitos adversos , Anticorpos Monoclonais Humanizados , Fármacos Dermatológicos/efeitos adversos , Esquema de Medicação , Feminino , Humanos , Injeções Subcutâneas , Masculino , Pessoa de Meia-Idade , Terapia PUVA , Psoríase/imunologia , Psoríase/patologia , Prevenção Secundária , Índice de Gravidade de Doença , Resultado do Tratamento
3.
J Am Acad Dermatol ; 51(5): 709-17, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15523348

RESUMO

BACKGROUND: Adverse changes in bone have been reported for patients undergoing high-dose, long-term (several years) isotretinoin therapy for disorders of cornification. The effect of short-term (4-5 months) therapy at the lower dose recommended for acne on bone development in younger, growing adolescent (12-17 years) patients has not been well studied. OBJECTIVE: The purpose of the study was to evaluate the effect of a standard, single course of isotretinoin (Accutane) therapy on bone mineral density (BMD) of the lumbar spine and hip in adolescents ages 12 to 17 years with severe, recalcitrant, nodular acne. METHODS: In this open-label, multicenter study, 217 adolescents (81 girls) with severe, recalcitrant, nodular acne were enrolled and treated with isotretinoin twice daily with food at the recommended total dose of approximately 1 mg/kg for 16 to 20 weeks. BMD in the lumbar spine and hip was measured at baseline and at the end of therapy by dual energy radiograph absorptiometry. RESULTS: There was no clinically significant mean change in BMD measured at the lumbar spine (+1.4%, range: -4.9% to +12.3%) or total hip (-0.26%, range: -11.3% to +15.0%). Hyperostosis was not observed in any patient. Typical efficacy expected in the treatment of acne was observed. CONCLUSIONS: A 16- to 20-week course of isotretinoin treatment at the recommended dose for severe acne has no clinically significant effect on lumbar spine and total hip BMD in the adolescent (12-17 years) population.


Assuntos
Acne Vulgar/tratamento farmacológico , Densidade Óssea/efeitos dos fármacos , Fármacos Dermatológicos/efeitos adversos , Isotretinoína/efeitos adversos , Adolescente , Criança , Fármacos Dermatológicos/administração & dosagem , Esquema de Medicação , Feminino , Quadril/fisiologia , Humanos , Hiperostose/induzido quimicamente , Isotretinoína/administração & dosagem , Vértebras Lombares/fisiologia , Masculino , Estudos Prospectivos
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