| Literature DB >> 8366896 |
M Steindel1, E Dias Neto, C L de Menezes, A J Romanha, A J Simpson.
Abstract
DNA extracted from 32 isolates of Trypanosoma cruzi was subjected to polymerase chain reaction amplification using 4 arbitrary primers resulting in relatively complex DNA profiles that include polymorphic markers known as random amplified polymorphic DNAs (RAPDs). The RAPD profiles of 18 strains belonging to zymodeme 1 (Z1) collected from various regions of South America exhibited a consistant pattern and 59 (59%) of the bands produced were present in all Z1 strains. A similar level of consistency was seen in the number of bands shared between 5 Z2 strains, 4 ZB strains and 2 ZC strains. A phenetic analysis of the 5 most different Z1 strains based on band sharing showed that their interrelationships mirrored their geographical origin. Comparison of the RAPD profiles of strains from different zymodemes showed that less than 7% of bands of strains in one zymodeme are present in strains of another zymodeme. Analysis of band sharing using bands present in all strains of a given zymodeme showed ZB and ZC to be closely related and Z1 and Z2 to form distinct groups.Entities:
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Year: 1993 PMID： 8366896 DOI： 10.1016/0166-6851(93)90030-2
Source DB: PubMed Journal: Mol Biochem Parasitol ISSN： 0166-6851 Impact factor: 1.759