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Homogeneous restriction fragment length polymorphism analysis of the ribosomal DNA repeating unit in New World Leishmania. 1993

P Guevara, and G Alonso, and J L Ramirez
Grupo de Genética Molecular, Centro de Biología Celular, Universidad Central de Venezuela, Caracas.

We have studied the Sau 3AI restriction length polymorphisms (RFLP) of the non-transcribed ribosomal spacer of Leishmania isolates from the mexicana and braziliensis complexes, using cloned sequences of Leishmania garnhami and Leishmania braziliensis. The L. garnhami probe produced very complex but conserved patterns in the homologous organisms, and these were shared by all the mexicana complex isolates at intermediate stringency conditions. The small subunit rRNA coding region within the probe also revealed a polymorphic Sau 3AI site exclusive of the braziliensis isolates. The braziliensis probe, containing only spacer sequences, yielded simple and very homogeneous patterns in all braziliensis isolates regardless of their geographical origin. Two main groups are identified in the New World isolates by the RFLP analysis in coincidence with the accepted mexicana and braziliensis complexes.

UI MeSH Term Description Entries
D007891 Leishmania A genus of flagellate protozoa comprising several species that are pathogenic for humans. Organisms of this genus have an amastigote and a promastigote stage in their life cycles. As a result of enzymatic studies this single genus has been divided into two subgenera: Leishmania leishmania and Leishmania viannia. Species within the Leishmania leishmania subgenus include: L. aethiopica, L. arabica, L. donovani, L. enrietti, L. gerbilli, L. hertigi, L. infantum, L. major, L. mexicana, and L. tropica. The following species are those that compose the Leishmania viannia subgenus: L. braziliensis, L. guyanensis, L. lainsoni, L. naiffi, and L. shawi. Leishmania (Leishmania),Leishmania (Viannia),Leishmania leishmania,Leishmania viannia,Leishmania leishmanias,Leishmania viannias,Leishmanias,Leishmanias (Leishmania),Leishmanias (Viannia),leishmanias, Leishmania,viannias, Leishmania
D007892 Leishmania braziliensis A parasitic hemoflagellate of the subgenus Leishmania viannia that infects man and animals. It causes cutaneous (LEISHMANIASIS, CUTANEOUS), diffuse cutaneous (LEISHMANIASIS, DIFFUSE CUTANEOUS), and mucocutaneous leishmaniasis (LEISHMANIASIS, MUCOCUTANEOUS) depending on the subspecies of this organism. The sandfly, Lutzomyia, is the vector. The Leishmania braziliensis complex includes the subspecies braziliensis and peruviana. Uta, a form of cutaneous leishmaniasis in the New World, is caused by the subspecies peruviana. Leishmania (Viannia) braziliensis,Leishmania braziliensis braziliensis,Leishmania (Viannia) brasiliensis,Leishmania brasiliensis,Leishmania brasiliensis brasiliensis,Leishmania brasiliensis peruviana,Leishmania braziliensis peruviana,Leishmania viannia brasiliensis,Leishmania viannia braziliensis
D007894 Leishmania mexicana A parasitic hemoflagellate of the subgenus Leishmania leishmania that infects man and animals including rodents. The Leishmania mexicana complex causes both cutaneous (LEISHMANIASIS, CUTANEOUS) and diffuse cutaneous leishmaniasis (LEISHMANIASIS, DIFFUSE CUTANEOUS) and includes the subspecies amazonensis, garnhami, mexicana, pifanoi, and venezuelensis. L. m. mexicana causes chiclero ulcer, a form of cutaneous leishmaniasis (LEISHMANIASIS, CUTANEOUS) in the New World. The sandfly, Lutzomyia, appears to be the vector. Leishmania (Leishmania) mexicana,Leishmania mexicana amazonensis,Leishmania mexicana mexicana,Leishmania leishmania mexicana,Leishmania leishmania mexicanas,Leishmania mexicana amazonenses,Leishmania mexicana mexicanas,Leishmania mexicanas,amazonenses, Leishmania mexicana,amazonensis, Leishmania mexicana,leishmania mexicana, Leishmania,mexicana amazonensis, Leishmania,mexicana mexicana, Leishmania,mexicana mexicanas, Leishmania,mexicana, Leishmania,mexicana, Leishmania leishmania,mexicana, Leishmania mexicana,mexicanas, Leishmania leishmania
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D012150 Polymorphism, Restriction Fragment Length Variation occurring within a species in the presence or length of DNA fragment generated by a specific endonuclease at a specific site in the genome. Such variations are generated by mutations that create or abolish recognition sites for these enzymes or change the length of the fragment. RFLP,Restriction Fragment Length Polymorphism,RFLPs,Restriction Fragment Length Polymorphisms
D004275 DNA, Ribosomal DNA sequences encoding RIBOSOMAL RNA and the segments of DNA separating the individual ribosomal RNA genes, referred to as RIBOSOMAL SPACER DNA. Ribosomal DNA,rDNA
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001483 Base Sequence The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence. DNA Sequence,Nucleotide Sequence,RNA Sequence,DNA Sequences,Base Sequences,Nucleotide Sequences,RNA Sequences,Sequence, Base,Sequence, DNA,Sequence, Nucleotide,Sequence, RNA,Sequences, Base,Sequences, DNA,Sequences, Nucleotide,Sequences, RNA
D015183 Restriction Mapping Use of restriction endonucleases to analyze and generate a physical map of genomes, genes, or other segments of DNA. Endonuclease Mapping, Restriction,Enzyme Mapping, Restriction,Site Mapping, Restriction,Analysis, Restriction Enzyme,Enzyme Analysis, Restriction,Restriction Enzyme Analysis,Analyses, Restriction Enzyme,Endonuclease Mappings, Restriction,Enzyme Analyses, Restriction,Enzyme Mappings, Restriction,Mapping, Restriction,Mapping, Restriction Endonuclease,Mapping, Restriction Enzyme,Mapping, Restriction Site,Mappings, Restriction,Mappings, Restriction Endonuclease,Mappings, Restriction Enzyme,Mappings, Restriction Site,Restriction Endonuclease Mapping,Restriction Endonuclease Mappings,Restriction Enzyme Analyses,Restriction Enzyme Mapping,Restriction Enzyme Mappings,Restriction Mappings,Restriction Site Mapping,Restriction Site Mappings,Site Mappings, Restriction
D016054 DNA, Protozoan Deoxyribonucleic acid that makes up the genetic material of protozoa. Protozoan DNA

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