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  • Title: Early syphilis treatment in HIV-infected patients: single dose vs. three doses of benzathine penicillin G.
    Author: Costa-Silva M, Azevedo C, Azevedo F, Lisboa C.
    Journal: J Eur Acad Dermatol Venereol; 2016 Oct; 30(10):1805-1809. PubMed ID: 27329618.
    Abstract:
    BACKGROUND: Current treatment guidelines for early stages of syphilis are the same regardless of HIV serostatus. There is still controversy about the best treatment for syphilis in HIV patients and the current recommendations are based on limited data. OBJECTIVE: The primary goal of this study was to compare the serological response rates to a single dose vs. three weekly doses of benzathine penicillin G (BPG) in HIV-infected patients with early syphilis and to assess the adequacy of current recommendations. METHODS: Clinical and laboratory data of HIV patients with early syphilis treated in Sexually Transmitted Disease Clinic between January 2000 and December 2014 were recorded. A good serological response was defined as a ≥4-fold decline in Venereal Disease Research Laboratory (VDRL) titre within 12 months after treatment. Serological failure was defined as a lack of at least fourfold decrease in VDRL titres within 12 months after treatment. RESULTS: After applying inclusion and exclusion criteria, 60 patients were enrolled in the study. Seventeen (28.3%) patients were treated with a single dose of BPG, while in 43 (71.7%) patients, three weekly doses were used. Fifty eight (96.7%) had a good serological response at 12 months and seroconversion was confirmed in 29 (48.3%) patients. There was no statistically significant difference between the two treatment groups regarding serological response, seroconversion rate and the time needed to obtain a good serological response. Furthermore, treatment response was not affected by the number of CD4 cells. CONCLUSIONS: The results of our study support the current international treatment guidelines, recommending early syphilis treatment with a single dose of BPG in HIV patients.
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