title: Topical tamoxifen in the therapy of cutaneous leishmaniasis.
abstract: The aims of the present work were to test the effect of tamoxifen administered topically and the therapeutic efficacy of tamoxifen and pentavalent antimonial combinations in an experimental model of cutaneous leishmaniasis. BALB/c mice infected with a luciferase expressing line of Leishmania amazonensis were treated with topical tamoxifen in two different formulations (ethanol or oil-free cream) as monotherapy or in co-administration with pentavalent antimonial. Treatment efficacy was evaluated by lesion size and parasite burden, quantified through luminescence, at the end of treatment and 4 weeks later. Topical tamoxifen, formulated in ethanol or as a cream, was shown to be effective. The interaction between tamoxifen and pentavalent antimonial was additive in vitro. Treatment with combined schemes containing tamoxifen and pentavalent antimonial was effective in reducing lesion size and parasite burden. Co-administration of tamoxifen and pentavalent antimonial was superior to monotherapy with antimonial.
authors.affiliation: Departamento de Parasitologia,Instituto de Ciências Biomédicas, Universidade de São Paulo,Av. Prof. Lineu Prestes 1374,05508-000 São Paulo,Brazil.
authors.forename: Cristiana T
authors.initials: CT
authors.lastname: Trinconi
authors.affiliation: Departamento de Parasitologia,Instituto de Ciências Biomédicas, Universidade de São Paulo,Av. Prof. Lineu Prestes 1374,05508-000 São Paulo,Brazil.
authors.forename: Juliana Q
authors.initials: JQ
authors.lastname: Reimão
authors.affiliation: Departamento de Parasitologia,Instituto de Ciências Biomédicas, Universidade de São Paulo,Av. Prof. Lineu Prestes 1374,05508-000 São Paulo,Brazil.
authors.forename: Vivian I
authors.initials: VI
authors.lastname: Bonano
authors.affiliation: Departamento de Parasitologia,Instituto de Ciências Biomédicas, Universidade de São Paulo,Av. Prof. Lineu Prestes 1374,05508-000 São Paulo,Brazil.
authors.forename: Caroline R
authors.initials: CR
authors.lastname: Espada
authors.affiliation: Departamento de Parasitologia,Instituto de Ciências Biomédicas, Universidade de São Paulo,Av. Prof. Lineu Prestes 1374,05508-000 São Paulo,Brazil.
authors.forename: Danilo C
authors.initials: DC
authors.lastname: Miguel
authors.affiliation: Departamento de Parasitologia,Instituto de Ciências Biomédicas, Universidade de São Paulo,Av. Prof. Lineu Prestes 1374,05508-000 São Paulo,Brazil.
authors.forename: Jenicer K U
authors.initials: JKU
authors.lastname: Yokoyama-Yasunaka
authors.affiliation: Departamento de Parasitologia,Instituto de Ciências Biomédicas, Universidade de São Paulo,Av. Prof. Lineu Prestes 1374,05508-000 São Paulo,Brazil.
authors.forename: Silvia R B
authors.initials: SRB
authors.lastname: Uliana
mesh_terms: D000287:Administration, Topical; D000818:Animals; D000981:Antiprotozoal Agents / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D004359:Drug Therapy, Combination / Q000009:adverse effects; D000431:Ethanol / Q000737:chemistry; D005260:Female; D007894:Leishmania mexicana / Q000187:drug effects* / Q000201:enzymology / Q000235:genetics; D016773:Leishmaniasis, Cutaneous / Q000188:drug therapy* / Q000469:parasitology; D008156:Luciferases / Q000235:genetics; D049449:Luminescence; D000077485:Meglumine Antimoniate / Q000008:administration & dosage / Q000627:therapeutic use*; D051379:Mice; D008807:Mice, Inbred BALB C; D012867:Skin / Q000187:drug effects* / Q000469:parasitology; D063465:Skin Cream / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use; D013629:Tamoxifen / Q000008:administration & dosage / Q000009:adverse effects / Q000737:chemistry / Q000627:therapeutic use*
chemical_list: D000981:Antiprotozoal Agents; D013629:Tamoxifen; D000431:Ethanol; D000077485:Meglumine Antimoniate; D008156:Luciferases
keywords: Leishmania amazonensis; Topical treatment; combination therapy; luciferase; tamoxifen