COMPARISON OF CONVENTIONAL TECHNIQUES TO DIFFERENTIATE BETWEEN TAENIA SOLIUM AND TAENIA SAGINATA AND AN IMPROVED POLYMERASE CHAIN REACTION-RESTRICTION FRAGMENT LENGTH POLYMORPHISM ASSAY USING A MITOCHONDRIAL 12S rDNA FRAGMENT
2002; American Society of Parasitologists; Volume: 88; Issue: 5 Linguagem: Inglês
10.1645/0022-3395(2002)088[1007
ISSN1937-2345
AutoresRichar Rodríguez‐Hidalgo, Dirk Geysen, Washington Benítez‐Ortiz, S. Geerts, J. Brandt,
Tópico(s)Molecular Biology Techniques and Applications
ResumoGiven the constraints of classical diagnostic methods, i.e., morphological and isoenzymatic studies of proglottids, a polymerase chain reaction test complemented with restriction enzyme analysis has been modified by redesigning one of the primers to reduce nonspecific amplifications experienced when using field samples. The use of these new, highly cestode-specific primers and the restriction enzyme DdeI led to the development of a diagnostic assay that clearly distinguishes between Taenia saginata and T. solium proglottids in field samples. This assay confirms the presence of T. saginata in Ecuador. DNA amplification of some of these taeniids showed different patterns, suggesting the possibility that strain differences exist. These results demonstrate the need for development of useful molecular assays as reliable tools for epidemiological studies on cestodes.
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