فهرست مطالب hajar yazdani
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BackgroundEchinococcosis is a parasitic disease with worldwide distribution which is caused by the tapeworms Echinococcus granulosus. Diagnosis of the disease relies on imaging techniques, but the techniques are not able to differentiate the cyst from benign or malignant tumors; hence, appropriate serologic methods are required for the differential diagnosis of the infection.Materials And MethodsIn this investigation, different sheep hydatid cyst antigens probed with thirty sera of patients with hydatid cyst and also thirty human normal sera using Western immunoblotting technique. Considering results of surgery as gold standard, sensitivity and specificity of Western blotting was estimated.ResultsSera of 29, 26, and 16 patients with hydatid cyst reacted with specific bands of hydatid cyst fluid (HCF), protoscolex crude antigen, and cyst wall crude antigen, respectively. However, none of the normal human sera reacted with those specific bands.ConclusionA 20 kDa band of sheep HCF is an appropriate antigen for serodiagnosis of hydatid cyst infection.Keywords: Antigen, cyst wall, hydatid cyst fluid, protoscolex, Western immunoblottin}
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Background
Onychomycosis is one of the most common clinical forms of fungal infections due to both filamentous fungi and yeasts. The genus of Candida is one of the most prominent causes of onychomycosis in all around the world. Although Candida albicans is still the most frequent cause of nail infections, use of broad-spectrum antifungal agents has led to a shift in the etiology of C. albicans to non-albicans species. The aim of the present study is rapid and precise identification of candida species isolated from nail infection by using of PCR-RFLP technique.
Materials and MethodsA total of 360 clinical yeast strains were collected from nail infections in Iran. Genomic DNA was extracted using FTA; cards. ITS1-5.8SrDNA-ITS2 region was amplified using universal primers and subsequently products were digested with the restriction enzyme MspI. For identification of newly described species (C. parapsilosis complex), the SADH gene was amplified, followed by digestion with Nla III restriction enzyme.
ResultsCandida albicans was the most commonly isolated species (41.1%), followed by C. parapsilosis (21.4%), C. tropicalis (12.8%), C. kefyr (9.4%), C. krusei (5.5%), C. orthopsilosis (4.1%), C. glabrata (2.8%), C. guilliermondii (1.4%), C. rugosa (0.8%), and C. lusitaniae (0.5%). Patients in the age groups of 51-60 and 81-90 years had the highest and lowest distribution of positive specimens, respectively.
ConclusionRapid and precise identification of Candida species from clinical specimens lead to appropriate therapeutic plans.
Keywords: Candida species, onychomycosis, PCR-RFLP}
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