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Parasitological diagnosis based on the faecal examination is frequently difficult in cases of chronic, low-level S. stercoralis infection. Even when a newly developed sensitive method (an agar plate culture) is applied, it is essential to examine faecal samples repeatedly to achieve a correct diagnosis. Additionally, it is important to note that a negative(More)
To determine the efficacy of stool examination for detection of Strongyloides infection, 1,350 stool samples collected in Japan, Brazil, and Thailand were examined by four different methods (direct fecal smear, formalin-ether concentration. Harada-Mori filter paper culture, and agar plate culture). The newly developed agar plate culture method was highly(More)
Posttherapy evaluation of strongyloidiasis is frequently difficult because coprologic examination is not sensitive enough for diagnosis of chronic infection. In the present study, anti-Strongyloides enzyme-linked immunosorbent assay antibodies were monitored before and after treatment with thiabendazole and pyrvinium pamoate in 199 patients with chronic(More)
The intermediate state of HTLV-1 infection, often found in individuals dually infected with Strongyloides stercoralis (S. stercoralis) and HTLV-1, is assumed to be a preleukemic state of adult T-cell leukemia (ATL). To investigate the effects of S. stercoralis superinfection on the natural history of HTLV-1 infection, we characterized peripheral blood(More)
Strongyloidiasis, a human intestinal infection with Strongyloides stercoralis, is difficult to treat with drugs. The factors influencing this phenomenon remain unclear. To determine the host factors involved in response to treatment, 46 patients with strongyloidiasis were treated with albendazole, followed-up for 1 year, and separated into two groups: cured(More)
Strongyloidiasis, a human intestinal infection caused by Strongyloides stercoralis (S. stercoralis), is difficult to cure with drugs. In particular, a decrease of the efficacy of treatment has been reported in patients dually infected with S. stercoralis and human T-cell leukaemia virus type I (HTLV-I), both of which are endemic in Okinawa, Japan. However,(More)
Field measurements of thoron exhalation rates have been carried out using a ZnS(Ag) scintillation detector with an accumulation chamber. The influence of soil surface temperature and moisture saturation on the thoron exhalation rate was observed. When the variation of moisture saturation was small, the soil surface temperature appeared to induce a strong(More)
An electrophoretic transfer technique was used to investigate qualitatively the production of antibodies to Strongyloides stercoralis larvae in 56 patients with strongyloidiasis. SDS-PAGE analysis of the larval extract revealed the presence of at least 33-39 polypeptide bands under either reducing or non-reducing condition. In the immunoblot analysis,(More)
The enzyme-linked immunosorbent assay was tested to evaluate whether it could be applicable in screening for mass examination of strongyloidiasis. A total of 2906 inhabitants in three areas (858 in Gushikawa Village, 849 in Nakazato Village and 1199 in Sashiki Town) were screened by the enzymatic assay and approximately 11-30% (11.8% in Gushikawa, 17.0% in(More)