Chemotherapy of Leishmaniasis: Past, Present and Future

A special issue of Tropical Medicine and Infectious Disease (ISSN 2414-6366). This special issue belongs to the section "Vector-Borne Diseases".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 1731

Special Issue Editors


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Guest Editor
Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP) Rua Monteiro Lobato 255, Campinas 13083-862, Brazil
Interests: leishmaniasis; Leishmania sp.; chemotherapy; treatment failure; drug resistance; drug discovery

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Guest Editor
Laboratory of Preclinical Assays and Research of Alternative Sources of Innovative Therapy for Toxoplasmosis and Other Sicknesses (PARASITTOS), Departamento de Morfologia e Patologia Básica, Faculdade de Medicina de Jundiaí, Jundiaí 13202-550, Brazil
Interests: leishmaniasis; toxoplasmosis; drug discovery; drug screening; pre-clinical assays

Special Issue Information

Dear Colleagues,

Leishmaniasis is a neglected disease caused by protozoa of the genus Leishmania, which may manifest differently depending on the Leishmania species and the immune response of the human host. Only a limited number of chemotherapeutic agents are available for treating this neglected infectious disease, most of which require parenteral administration and may cause serious side effects. The search for new drugs to treat this disease is imperative.

For this Special Issue, we hope to receive original research articles and reviews that focus on current and potential new drugs for leishmaniasis chemotherapy. Additionally, this Special Issue may offer new insights into understanding the mechanisms of action and resistance of current and alternative drugs proposed for the treatment of this parasitic disease.

Dr. Adriano Cappellazzo Coelho
Dr. Juliana Quero Reimão
Guest Editors

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Keywords

  • chemotherapy
  • leishmaniasis
  • leishmania species
  • drug discovery
  • drug resistance

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Published Papers (2 papers)

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12 pages, 3305 KiB  
Article
Susceptibility of Leishmania amazonensis Axenic Amastigotes to the Calpain Inhibitor MDL28170
by Simone S. C. Oliveira, Fernanda A. Marinho, Leandro S. Sangenito, Sergio H. Seabra, Rubem F. Menna-Barreto, Claudia M. d’Avila, André L. S. Santos and Marta H. Branquinha
Trop. Med. Infect. Dis. 2024, 9(11), 259; https://doi.org/10.3390/tropicalmed9110259 - 31 Oct 2024
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Abstract
Leishmaniasis encompasses a group of neglected diseases caused by flagellated protozoa belonging to the Leishmania genus, associated with high morbidity and mortality. The search for compounds with anti-Leishmania activity that exhibit lower toxicity and can overcome the emergence of resistant strains remains [...] Read more.
Leishmaniasis encompasses a group of neglected diseases caused by flagellated protozoa belonging to the Leishmania genus, associated with high morbidity and mortality. The search for compounds with anti-Leishmania activity that exhibit lower toxicity and can overcome the emergence of resistant strains remains a significant goal. In this context, the calpain inhibitor MDL28170 has previously demonstrated deleterious effects against promastigote forms of Leishmania amazonensis, which led us to investigate its role on axenic amastigote forms. The calpain inhibitor MDL28170 was able to decrease the viability of amastigotes in a typically dose-dependent manner. The treatment with the IC50 dose (13.5 μM) for 72 h led to significant amastigote lysis and increased cell-to-cell aggregation. Ultrastructural analysis revealed several cellular alterations, including disruption of the trans-Golgi network and the formation of autophagosomes when treated with MDL28170 at ½ × IC50 dose. Additionally, mitochondrial swelling and the formation of concentric membranous structures inside the mitochondrion were observed after incubation with the IC50 dose. These results reinforce the potential application of the calpain inhibitor MDL28170 against L. amazonensis, highlighting its effectiveness and possible mechanism of action against the parasite. Full article
(This article belongs to the Special Issue Chemotherapy of Leishmaniasis: Past, Present and Future)
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7 pages, 1160 KiB  
Case Report
Imported Cutaneous Leishmaniasis from Peru Caused by Leishmania (Viannia) guyanensis in a Brazilian Patient: Case Report and In Vitro Drug Susceptibility Analysis
by Elizabeth M. Coser, Juliana I. Aoki, Cristiele Saborito, Stephane de la Roca, João Paulo T. Brufatto, Rodrigo Angerami, Rafael F. Stelini, Paulo Eduardo N. F. Velho and Adriano C. Coelho
Trop. Med. Infect. Dis. 2024, 9(11), 264; https://doi.org/10.3390/tropicalmed9110264 - 5 Nov 2024
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Abstract
In South America, cutaneous leishmaniasis is caused by several species of the parasite of the genus Leishmania. Here, we describe an imported case of cutaneous leishmaniasis acquired in Peru by a Brazilian patient during her travel to Iquitos. Infection by Leishmania parasites [...] Read more.
In South America, cutaneous leishmaniasis is caused by several species of the parasite of the genus Leishmania. Here, we describe an imported case of cutaneous leishmaniasis acquired in Peru by a Brazilian patient during her travel to Iquitos. Infection by Leishmania parasites was confirmed by histopathologic examination, and the patient was treated with pentavalent antimony (Pentostam), without clinical response. Molecular typing was performed by sequencing the ribosomal DNA internal transcribed spacer and heat-shock protein 70 gene, which identified the parasites as Leishmania guyanensis. The clinical isolate was similarly susceptible to amphotericin B, pentamidine, and miltefosine as the reference strain, while for pentavalent antimony, this clinical isolate was more susceptible than the reference strain, even though its susceptibility in vitro was still considered low. The patient was then treated with liposomal amphotericin B, with clinical improvement of the lesions. Full article
(This article belongs to the Special Issue Chemotherapy of Leishmaniasis: Past, Present and Future)
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