Macrophage Polarisation During Leishmania (Viannia) braziliensis Infection in Mice Marina Floro e Silva, Guilherme Augusto Sanches Roque, Lilian de Oliveira Coser, Genesy Pérez Jorge, Alexandre Leite Rodrigues de Oliveira, Francisca Janaína Soares Rocha, Selma Giorgio Parasite Immunology, 2025 Leishmania (Viannia) braziliensis causes cutaneous and mucocutaneous leishmaniasis. Macrophages are host cells for parasite replication and act as effector cells against the parasite. The two main macrophage phenotypes (M1 and M2) and their polarisation states have been implicated in Leishmania infection despite scarce data on L. (V.) braziliensis. In this study, we investigated the temporal and spatial distribution and predominance of M1 and M2 macrophages during L. (V.) braziliensis infection in Balb/c mice. Animals were infected with L. (V.) braziliensis promastigotes and were monitored for 25 weeks. Histopathological evaluation of footpad lesions, regional lymph nodes, and spleen; cellularity; and macrophage population quantification of M1, and M2 macrophages by flow cytometry were performed in different tissues. The results showed that after infection with either strain of L. (V.) braziliensis the lesions were small and non‐ulcerated. The dissemination of parasites to tissues reinforced the characteristic visualisation of dermotropicL. (V.) braziliensis. The proportion of M2 macrophages in different tissues was significantly higher than that of M1 macrophages. Overall, the results reported here confirm that Leishmania an intracellular parasite, promotes and influences macrophage phenotype polarisation in different tissues over time, and researchers testing therapies based on macrophage phenotype regulation should consider this evidence.
Impact of Bacterial Membrane Vesicles on Cellular Responses in Leishmania amazonensis -Infected Macrophages In Vitro PH Gallo-Francisco, GP Jorge, GAS Roque, MF e Silva, NS da Silva, ... bioRxiv, 2025.07. 08.663775 , 2025 2025.0
Macrophage Polarisation During Leishmania ( Viannia ) braziliensis Infection in Mice M Floro e Silva, GAS Roque, L de Oliveira Coser, GP Jorge, ... Parasite immunology 47 (1), e70001 , 2025 2025.0 Citations: 2
Evaluation of prime and prime-boost immunization strategies in BALB/c mice inoculated with Leishmania infantum transfected with toxic plasmids GAS Roque, NE Zorgi, FJS Rocha, MF e Silva, TF Araújo, DR Abánades, ... Vaccine 40 (31), 4105-4115 , 2022 2022.0 Citations: 3
Leishmania (Viannia) braziliensis replicates in mouse bone marrow MF e Silva, GAS Roque, D de Andrade Machado, FJS Rocha, S Giorgio Acta tropica 230, 106407 , 2022 2022.0 Citations: 3
Leishmania infantum transfected with toxic plasmid induces protection in mice infected with wild type L. infantum or L. amazonensis NE Zorgi, LV Arruda, I Paladine, GAS Roque, TF Araujo, M Brocchi, ... Molecular Immunology 127, 95-106 , 2020 2020.0 Citations: 9
Granulomas in parasitic diseases: the good and the bad S Giorgio, PH Gallo-Francisco, GAS Roque, M Floro e Silva Parasitology research 119 (10), 3165-3180 , 2020 2020.0 Citations: 37
Evaluation of Microbiota and Weight Alterations After the Administration of Tetracycline and Lactobacillus gasseri in Rats FS Olimpio, FS Del Fiol, R Lima, KS Rosa, GA Roque, CV Santos, J Piletz Current Microbiology 77 (9), 2449-2455 , 2020 2020.0 Citations: 5
Avaliação das respostas imunológica e histopatológica de camundongos imunizados com vacina experimental anti" e; Leishmania infantum" e GAS Roque [sn] , 2020 2020.0
As helmintíases, doenças tropicais negligenciadas, podem afetar a eficácia das vacinas? Com ênfase na COVID-19 GAS Roque, PH Gallo-Francisco, M Flóro, LF Geres, S Giorgio
MOST CITED SCHOLAR PUBLICATIONS
Granulomas in parasitic diseases: the good and the bad S Giorgio, PH Gallo-Francisco, GAS Roque, M Floro e Silva Parasitology research 119 (10), 3165-3180 , 2020 2020.0 Citations: 37
Leishmania infantum transfected with toxic plasmid induces protection in mice infected with wild type L. infantum or L. amazonensis NE Zorgi, LV Arruda, I Paladine, GAS Roque, TF Araujo, M Brocchi, ... Molecular Immunology 127, 95-106 , 2020 2020.0 Citations: 9
Evaluation of Microbiota and Weight Alterations After the Administration of Tetracycline and Lactobacillus gasseri in Rats FS Olimpio, FS Del Fiol, R Lima, KS Rosa, GA Roque, CV Santos, J Piletz Current Microbiology 77 (9), 2449-2455 , 2020 2020.0 Citations: 5
Evaluation of prime and prime-boost immunization strategies in BALB/c mice inoculated with Leishmania infantum transfected with toxic plasmids GAS Roque, NE Zorgi, FJS Rocha, MF e Silva, TF Araújo, DR Abánades, ... Vaccine 40 (31), 4105-4115 , 2022 2022.0 Citations: 3
Leishmania (Viannia) braziliensis replicates in mouse bone marrow MF e Silva, GAS Roque, D de Andrade Machado, FJS Rocha, S Giorgio Acta tropica 230, 106407 , 2022 2022.0 Citations: 3
Macrophage Polarisation During Leishmania ( Viannia ) braziliensis Infection in Mice M Floro e Silva, GAS Roque, L de Oliveira Coser, GP Jorge, ... Parasite immunology 47 (1), e70001 , 2025 2025.0 Citations: 2
Impact of Bacterial Membrane Vesicles on Cellular Responses in Leishmania amazonensis -Infected Macrophages In Vitro PH Gallo-Francisco, GP Jorge, GAS Roque, MF e Silva, NS da Silva, ... bioRxiv, 2025.07. 08.663775 , 2025 2025.0
Avaliação das respostas imunológica e histopatológica de camundongos imunizados com vacina experimental anti" e; Leishmania infantum" e GAS Roque [sn] , 2020 2020.0
As helmintíases, doenças tropicais negligenciadas, podem afetar a eficácia das vacinas? Com ênfase na COVID-19 GAS Roque, PH Gallo-Francisco, M Flóro, LF Geres, S Giorgio