In Vitro Reduced Susceptibility to Pentavalent Antimonials of a <i>Leishmania infantum</i> Isolate from a Human Cutaneous Leishmaniasis Case in Central Italy
Cutaneous leishmaniasis (CL) caused by <i>Leishmania</i> (<i>Leishmania</i>) <i>infantum</i> is endemic in the Mediterranean basin. Here we report an autochthonous case of CL in a patient living in central Italy with an unsatisfactory response to treatment with in...
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doaj-b5d5a48fa6d14ffcb46d5399906d25b72021-06-01T01:14:58ZengMDPI AGMicroorganisms2076-26072021-05-0191147114710.3390/microorganisms9061147In Vitro Reduced Susceptibility to Pentavalent Antimonials of a <i>Leishmania infantum</i> Isolate from a Human Cutaneous Leishmaniasis Case in Central ItalyAurora Diotallevi0Gloria Buffi1Giovanni Corbelli2Marcello Ceccarelli3Margherita Ortalli4Stefania Varani5Mauro Magnani6Luca Galluzzi7Department of Biomolecular Sciences, University of Urbino “Carlo Bo”, 61029 Urbino, ItalyDepartment of Biomolecular Sciences, University of Urbino “Carlo Bo”, 61029 Urbino, ItalyUnit of Infectious Diseases, Marche Nord Hospital, 61122 Pesaro, ItalyDepartment of Biomolecular Sciences, University of Urbino “Carlo Bo”, 61029 Urbino, ItalyUnit of Microbiology, IRCCS Polyclinic S.Orsola-Malpighi, 40138 Bologna, ItalyUnit of Microbiology, IRCCS Polyclinic S.Orsola-Malpighi, 40138 Bologna, ItalyDepartment of Biomolecular Sciences, University of Urbino “Carlo Bo”, 61029 Urbino, ItalyDepartment of Biomolecular Sciences, University of Urbino “Carlo Bo”, 61029 Urbino, ItalyCutaneous leishmaniasis (CL) caused by <i>Leishmania</i> (<i>Leishmania</i>) <i>infantum</i> is endemic in the Mediterranean basin. Here we report an autochthonous case of CL in a patient living in central Italy with an unsatisfactory response to treatment with intralesional Meglumine Antimoniate and in vitro demonstration of reduced susceptibility to SbIII. Parasitological diagnosis was first achieved by histopathology on tissue biopsy and the patient was treated with a local infiltration of Meglumine Antimoniate. Since the clinical response at 12 weeks from the treatment’s onset was deemed unsatisfactory, two further skin biopsies were taken for histopathological examination, DNA extraction and parasite isolation. <i>L. (L.) infantum</i> was identified by molecular typing. The low susceptibility to Meglumine Antimoniate was confirmed in vitro: the promastigotes from the patient strain showed significantly lower susceptibility to SbIII (the active trivalent form of antimonial) compared to the reference strain MHOM/TN/80/IPT1. The patient underwent a new treatment course with intravenous liposomal Amphotericin B, reaching complete healing of the lesion. Additional studies are needed to confirm the epidemiological and clinical relevance of reduced susceptibility to SbIII of human <i>L.</i> (<i>L</i>.) <i>infantum</i> isolate in Italy.https://www.mdpi.com/2076-2607/9/6/1147<i>Leishmania infantum</i>antimonialsresistancecutaneous leishmaniasis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Aurora Diotallevi Gloria Buffi Giovanni Corbelli Marcello Ceccarelli Margherita Ortalli Stefania Varani Mauro Magnani Luca Galluzzi |
spellingShingle |
Aurora Diotallevi Gloria Buffi Giovanni Corbelli Marcello Ceccarelli Margherita Ortalli Stefania Varani Mauro Magnani Luca Galluzzi In Vitro Reduced Susceptibility to Pentavalent Antimonials of a <i>Leishmania infantum</i> Isolate from a Human Cutaneous Leishmaniasis Case in Central Italy Microorganisms <i>Leishmania infantum</i> antimonials resistance cutaneous leishmaniasis |
author_facet |
Aurora Diotallevi Gloria Buffi Giovanni Corbelli Marcello Ceccarelli Margherita Ortalli Stefania Varani Mauro Magnani Luca Galluzzi |
author_sort |
Aurora Diotallevi |
title |
In Vitro Reduced Susceptibility to Pentavalent Antimonials of a <i>Leishmania infantum</i> Isolate from a Human Cutaneous Leishmaniasis Case in Central Italy |
title_short |
In Vitro Reduced Susceptibility to Pentavalent Antimonials of a <i>Leishmania infantum</i> Isolate from a Human Cutaneous Leishmaniasis Case in Central Italy |
title_full |
In Vitro Reduced Susceptibility to Pentavalent Antimonials of a <i>Leishmania infantum</i> Isolate from a Human Cutaneous Leishmaniasis Case in Central Italy |
title_fullStr |
In Vitro Reduced Susceptibility to Pentavalent Antimonials of a <i>Leishmania infantum</i> Isolate from a Human Cutaneous Leishmaniasis Case in Central Italy |
title_full_unstemmed |
In Vitro Reduced Susceptibility to Pentavalent Antimonials of a <i>Leishmania infantum</i> Isolate from a Human Cutaneous Leishmaniasis Case in Central Italy |
title_sort |
in vitro reduced susceptibility to pentavalent antimonials of a <i>leishmania infantum</i> isolate from a human cutaneous leishmaniasis case in central italy |
publisher |
MDPI AG |
series |
Microorganisms |
issn |
2076-2607 |
publishDate |
2021-05-01 |
description |
Cutaneous leishmaniasis (CL) caused by <i>Leishmania</i> (<i>Leishmania</i>) <i>infantum</i> is endemic in the Mediterranean basin. Here we report an autochthonous case of CL in a patient living in central Italy with an unsatisfactory response to treatment with intralesional Meglumine Antimoniate and in vitro demonstration of reduced susceptibility to SbIII. Parasitological diagnosis was first achieved by histopathology on tissue biopsy and the patient was treated with a local infiltration of Meglumine Antimoniate. Since the clinical response at 12 weeks from the treatment’s onset was deemed unsatisfactory, two further skin biopsies were taken for histopathological examination, DNA extraction and parasite isolation. <i>L. (L.) infantum</i> was identified by molecular typing. The low susceptibility to Meglumine Antimoniate was confirmed in vitro: the promastigotes from the patient strain showed significantly lower susceptibility to SbIII (the active trivalent form of antimonial) compared to the reference strain MHOM/TN/80/IPT1. The patient underwent a new treatment course with intravenous liposomal Amphotericin B, reaching complete healing of the lesion. Additional studies are needed to confirm the epidemiological and clinical relevance of reduced susceptibility to SbIII of human <i>L.</i> (<i>L</i>.) <i>infantum</i> isolate in Italy. |
topic |
<i>Leishmania infantum</i> antimonials resistance cutaneous leishmaniasis |
url |
https://www.mdpi.com/2076-2607/9/6/1147 |
work_keys_str_mv |
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