We used a species-specific approach to treat 10 patients with cutaneous leishmaniasis diagnosed using polymerase chain reaction. Non-antimony treatments (oral miltefosine, ketoconazole, and liposomal amphotericin B) were chosen as an alternative to pentavalent antimony drugs based on likely or proven drug efficacy against the infecting species. Leishmania Viannia panamensis was diagnosed in three patients and treated successfully with oral ketoconazole. Miltefosine treatment cured two patients with L. infantum chagasi . A wide variety of Leishmania responded to liposomal amphotericin B administered for 57 days. Three patients with L. V. braziliensis , one patient with L. tropica , and two patients with L. infantum chagasi were treated successfully. One person with L. V. braziliensis healed slowly because of a resistant bacterial superinfection, and a second patient with L. infantum chagasi relapsed and was retreated with miltefosine. These drugs were reasonably well-tolerated. In this limited case series, alternative non-antimony based regimens were convenient, safe, and effective.

Project Start
Project End
Budget Start
Budget End
Support Year
34
Fiscal Year
2011
Total Cost
$617,395
Indirect Cost
City
State
Country
Zip Code
Nash, Theodore E (2013) Unraveling how Giardia infections cause disease. J Clin Invest 123:2346-7
Adam, Rodney D; Dahlstrom, Eric W; Martens, Craig A et al. (2013) Genome sequencing of Giardia lamblia genotypes A2 and B isolates (DH and GS) and comparative analysis with the genomes of genotypes A1 and E (WB and Pig). Genome Biol Evol 5:2498-511
Kamda, Joel D; Nash, Theodore E; Singer, Steven M (2012) Giardia duodenalis: dendritic cell defects in IL-6 deficient mice contribute to susceptibility to intestinal infection. Exp Parasitol 130:288-91
Ramanathan, Roshan; Talaat, Kawsar R; Fedorko, Daniel P et al. (2011) A species-specific approach to the use of non-antimony treatments for cutaneous leishmaniasis. Am J Trop Med Hyg 84:109-17
Adam, Rodney D; Nigam, Anuranjini; Seshadri, Vishwas et al. (2010) The Giardia lamblia vsp gene repertoire: characteristics, genomic organization, and evolution. BMC Genomics 11:424
Galkin, Andrey; Kulakova, Liudmila; Wu, Rui et al. (2010) X-ray structure and characterization of carbamate kinase from the human parasite Giardia lamblia. Acta Crystallogr Sect F Struct Biol Cryst Commun 66:386-90
Burneo, Jorge G; Del Brutto, Oscar; Delgado-Escueta, Antonio V et al. (2009) Workshop report: Developing an international collaborative research network in neurocysticercosis and epilepsy. Epilepsia 50:1289-90
Li, Zhimin; Kulakova, Liudmila; Li, Ling et al. (2009) Mechanisms of catalysis and inhibition operative in the arginine deiminase from the human pathogen Giardia lamblia. Bioorg Chem 37:149-61
Elias, Eliana V; Quiroga, Rodrigo; Gottig, Natalia et al. (2008) Characterization of SNAREs determines the absence of a typical Golgi apparatus in the ancient eukaryote Giardia lamblia. J Biol Chem 283:35996-6010
Touz, Maria Carolina; Ropolo, Andrea Silvana; Rivero, Maria Romina et al. (2008) Arginine deiminase has multiple regulatory roles in the biology of Giardia lamblia. J Cell Sci 121:2930-8