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Objective To obtain a better understaning of the clinical features of Castleman tumor associated paraneoplastic pemphigus. Methods The clinical features and therapy of 10 cases of this disease, diagnosed in the Department of Dermatology of Peking University First Hospital were analyzed. Results Castleman tumor was shown to be the most common neoplasm associated with paraneoplastic pemphigus in China. The clinical presentations, histopathologic characteristics, CT scan findings, and immunologic features were all unique. The early diagnosis and removal of the Castleman tumor are crucial for the treatment of this tumor-associated autoimmune disease. Conclusions Because Castleman tumor is directly related to the induction of autoimmunity, early diagnosis and prompt removal of the tumor are essential to the management of this disease.
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It is known that patients with vitiligo often have antibodies to melanocytes. In order to identify vitiligo antibodies react to corresponding antigens, we used cultured normal human melanocytes to react with sera from 48 patients with vitiligo, the result showed that 52% of patients with vitiligo have antibodies to cell-surface antigens of melanocytes. Then immunoprecipitation and SDS-PAGE analysis were used to reveal molecular weights (MW) of the antigens, the result showed that the MW are about 75 000, 90 000, 110 000, and 150 000.
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Objective To assess the clinical efficacy and safety of benzoyl peroxide gel(BPG)with different concentrations in the treatment of acne vulgaris,and to compare the quality between the domestic products with imported products.Methods The study was an open-controlled clinical trial.The patients were divided into4groups:imported2.5%,5%,10%gel and domestic5%gel.All preparations were ap-plied twice daily for6weeks.Study visits took place at baseline and week2,4and6.Results Different concentrations of benzoyl peroxide gel were effective for inflammatory lesions.The longer the course of treat-ment and the higher the drug concentration were,the better global clinical efficacy was,and the optimum concentration was5%or10%.In addition,the higher the drug concentration was,the higher adverse reac-tion rate was.Transient and mild local skin irritation occurred but was well tolerated by the patients.The imported benzoyl peroxide5%gel was as effective as domestic benzoyl peroxide5%gel,but the adverse re-action rate was less than the latter.Conclusion Different concentrations of benzoyl peroxide gel are all ef-fective and safe in the treatment of acne vulgaris,with the optimum concertration is5%or10%.