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  • Title: Filariasis and erisipela in Santo Domingo.
    Author: Vincent AL, Ureña Rojas CA, Ayoub EM, Ottesen EA, Harden EG.
    Journal: J Parasitol; 1998 Jun; 84(3):557-61. PubMed ID: 9645857.
    Abstract:
    This study examined acute-convalescent changes in diagnostic anti-streptococcal antibodies by the anti-streptolysin O (ASO) and anti-DNAase B (ADAB) tests among patients (n 28) with lymphedema and recurrent erisipela of the lower limb, comparing them with endemic normal control residents (n=25). The study was based in Villa Francisca, an urban focus of Bancroftian filariasis in eastern Santo Domingo, capital of the Dominican Republic. The acute signs and symptoms of erisipela were consistent with a diagnosis of bacterial cellulitis. The ASO test was especially successful at demonstrating a rise in mean titer during convalescence, whereas the ADAB produced about the same frequency of significant increases (0.2 log titer) as did the ASO. When subjects were scored as responders if mounting a minimal titer increase by either test, patients were found more frequently positive than were controls (chi2=5.3, P=0.02). About half (54%) of all patients mounted at least a minimal antibody increase. Filaria-specific IgG4 antibodies were absent from all sera of 20 residents of a nonendemic Dominican mountain town but appeared in about two-thirds of the sampled residents of the endemic barrio. Notably however, levels did not change between the acute phase and convalescence. These findings are consistent with the hypothesis that recurrent streptococcal invasion of the lymphatics may be a significant factor triggering or amplifying lymphedema and elephantiasis in patients with chronic filariasis.
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