Tegumentary leishmaniasis by Leishmania braziliensis complex in Cochabamba, Bolivia including the presence of L. braziliensis outlier Tegumentary leishmaniasis in Cochabamba, Bolivia
Por:
Torrico, MC, Fernandez-Arevalo, A, Ballart, C, Solano, M, Rojas, E, Ariza, E, Tebar, S, Lozano, D, Abras, A, Gascon, J, Picado, A, Munoz, C, Torrico, F, Gallego, M
Publicada:
1 jul 2022
Ahead of Print:
1 jul 2021
Resumen:
Leishmaniasis is caused by protozoans of the Leishmania genus, which includes more than 20 species capable of infecting humans worldwide. In the Americas, the most widespread specie is L. braziliensis, present in 18 countries including Bolivia. The taxonomic position of the L. braziliensis complex has been a subject of controversy, complicated further by the recent identification of a particular subpopulation named L. braziliensis atypical or outlier. The aim of this study was to carry out a systematic analysis of the L. braziliensis complex in Bolivia and to describe the associated clinical characteristics. Forty-one strains were analyzed by sequencing an amplified 1245 bp fragment of the hsp70 gene, which allowed its identification as: 24 (59%) L. braziliensis, 16 (39%) L. braziliensis outlier, and one (2%) L. peruviana. In a dendrogram constructed, L. braziliensis and L. peruviana are grouped in the same cluster, whilst L. braziliensis outlier appears in a separate branch. Sequence alignment allowed the identification of five non-polymorphic nucleotide positions (288, 297, 642, 993, and 1213) that discriminate L. braziliensis and L. peruviana from L. braziliensis outlier. Moreover, nucleotide positions 51 and 561 enable L. peruviana to be discriminated from the other two taxa. A greater diversity was observed in L. braziliensis outlier than in L. braziliensis-L. peruviana. The 41 strains came from 32 patients with tegumentary leishmaniasis, among which 22 patients (69%) presented cutaneous lesions (11 caused by L. braziliensis and 11 by L. braziliensis outlier) and 10 patients (31%) mucocutaneous lesions (eight caused by L. braziliensis, one by L. braziliensis outlier, and one by L. peruviana). Nine patients (28%) simultaneously provided two isolates, each from a separate lesion, and in each case the same genotype was identified in both. Treatment failure was observed in six patients infected with L. braziliensis and one patient with L. peruviana.
Filiaciones:
Torrico, MC:
Univ San Simon, Fac Med, Cochabamba, Bolivia
Fdn CEADES & Medio Ambiente, Cochabamba, Bolivia
Univ Barcelona, Fac Farm & Ciencies Alimentacio, Dept Biol Sanitat & Medi Ambient, Seccio Parasitol, Barcelona, Spain
Fernandez-Arevalo, A:
Univ Barcelona, Fac Farm & Ciencies Alimentacio, Dept Biol Sanitat & Medi Ambient, Seccio Parasitol, Barcelona, Spain
Inst Recerca Biomed St Pau, Barcelona, Spain
Ballart, C:
Univ Barcelona, Fac Farm & Ciencies Alimentacio, Dept Biol Sanitat & Medi Ambient, Seccio Parasitol, Barcelona, Spain
Inst Salud Global Barcelona ISGlobal, Barcelona, Spain
Solano, M:
Univ San Simon, Fac Med, Cochabamba, Bolivia
Rojas, E:
Univ San Simon, Fac Med, Cochabamba, Bolivia
Ariza, E:
Univ Barcelona, Fac Farm & Ciencies Alimentacio, Dept Biol Sanitat & Medi Ambient, Seccio Parasitol, Barcelona, Spain
Inst Recerca Biomed St Pau, Barcelona, Spain
Tebar, S:
Univ Barcelona, Fac Farm & Ciencies Alimentacio, Dept Biol Sanitat & Medi Ambient, Seccio Parasitol, Barcelona, Spain
Lozano, D:
Univ San Simon, Fac Med, Cochabamba, Bolivia
Fdn CEADES & Medio Ambiente, Cochabamba, Bolivia
Univ Barcelona, Fac Farm & Ciencies Alimentacio, Dept Biol Sanitat & Medi Ambient, Seccio Parasitol, Barcelona, Spain
Abras, A:
Univ Barcelona, Fac Farm & Ciencies Alimentacio, Dept Biol Sanitat & Medi Ambient, Seccio Parasitol, Barcelona, Spain
Inst Recerca Biomed St Pau, Barcelona, Spain
Univ Girona, Dept Biol, Lab Ictiol Genet, Girona, Spain
Gascon, J:
Inst Salud Global Barcelona ISGlobal, Barcelona, Spain
Picado, A:
Inst Salud Global Barcelona ISGlobal, Barcelona, Spain
Fdn Innovat New Diagnost FIND, Geneva, Switzerland
Munoz, C:
Inst Recerca Biomed St Pau, Barcelona, Spain
Hosp Santa Creu & St Pau Barcelona, Serv Microbiol, Barcelona, Spain
Univ Autonoma Barcelona, Dept Genet Microbiol, Bellaterra, Spain
Torrico, F:
Univ San Simon, Fac Med, Cochabamba, Bolivia
Fdn CEADES & Medio Ambiente, Cochabamba, Bolivia
Gallego, M:
Univ Barcelona, Fac Farm & Ciencies Alimentacio, Dept Biol Sanitat & Medi Ambient, Seccio Parasitol, Barcelona, Spain
Inst Salud Global Barcelona ISGlobal, Barcelona, Spain
hybrid, All Open Access, Hybrid Gold
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