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Wang H, Li S, Cui Z, Qin T, Shi H, Ma J, Li L, Yu G, Jiang T, Li C. Analysis of spleen histopathology, splenocyte composition and haematological parameters in four strains of mice infected with Plasmodium berghei K173. Malar J 2021; 20:249. [PMID: 34090420 PMCID: PMC8180108 DOI: 10.1186/s12936-021-03786-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 05/27/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Malaria is a fatal disease that presents clinically as a continuum of symptoms and severity, which are determined by complex host-parasite interactions. Clearance of infection is believed to be accomplished by the spleen and mononuclear phagocytic system (MPS), independent of artemisinin treatment. The spleen filters infected red blood cells (RBCs) from circulation through immune-mediated recognition of the infected RBCs followed by phagocytosis. This study evaluated the tolerance of four different strains of mice to Plasmodium berghei strain K173 (P. berghei K173), and the differences in the role of the spleen in controlling P. berghei K173 infection. METHODS Using different strains of mice (C57BL/6, BALB/C, ICR, and KM mice) infected with P. berghei K173, the mechanisms leading to splenomegaly, histopathology, splenocyte activation and proliferation, and their relationship to the control of parasitaemia and host mortality were examined and evaluated. RESULTS Survival time of mice infected with P. berghei K173 varied, although the infection was uniformly lethal. Mice of the C57BL/6 strain were the most resistant, while mice of the strain ICR were the most susceptible. BALB/c and KM mice were intermediate. In the course of P. berghei K173 infection, all infected mice experienced significant splenomegaly. Parasites were observed in the red pulp at 3 days post infection (dpi) in all animals. All spleens retained late trophozoite stages as well as a fraction of earlier ring-stage parasites. The percentages of macrophages in infected C57BL/6 and KM mice were higher than uninfected mice on 8 dpi. Spleens of infected ICR and KM mice exhibited structural disorganization and remodelling. Furthermore, parasitaemia was significantly higher in KM versus C57BL/6 mice at 8 dpi. The percentages of macrophages in ICR infected mice were lower than uninfected mice, and the parasitaemia was higher than other strains. CONCLUSIONS The results presented here demonstrate the rate of splenic mechanical filtration and that splenic macrophages are the predominant roles in controlling an individual's total parasite burden. This can influence the pathogenesis of malaria. Finally, different genetic backgrounds of mice have different splenic mechanisms for controlling malaria infection.
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Affiliation(s)
- Huajing Wang
- Tang Center for Herbal Medicine Research, Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medical Sciences, No. 16 Dongzhimen Nanxiaojie, Dongcheng District, Beijing, 100700, China
- Artemisinin Research Center, China Academy of Traditional Chinese Medical Sciences, Beijing, China
| | - Shuo Li
- Tang Center for Herbal Medicine Research, Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medical Sciences, No. 16 Dongzhimen Nanxiaojie, Dongcheng District, Beijing, 100700, China
- Artemisinin Research Center, China Academy of Traditional Chinese Medical Sciences, Beijing, China
| | - Zhao Cui
- Tang Center for Herbal Medicine Research, Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medical Sciences, No. 16 Dongzhimen Nanxiaojie, Dongcheng District, Beijing, 100700, China
| | - Tingting Qin
- Tang Center for Herbal Medicine Research, Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medical Sciences, No. 16 Dongzhimen Nanxiaojie, Dongcheng District, Beijing, 100700, China
- Artemisinin Research Center, China Academy of Traditional Chinese Medical Sciences, Beijing, China
| | - Hang Shi
- Tang Center for Herbal Medicine Research, Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medical Sciences, No. 16 Dongzhimen Nanxiaojie, Dongcheng District, Beijing, 100700, China
| | - Ji Ma
- Tang Center for Herbal Medicine Research, Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medical Sciences, No. 16 Dongzhimen Nanxiaojie, Dongcheng District, Beijing, 100700, China
- Artemisinin Research Center, China Academy of Traditional Chinese Medical Sciences, Beijing, China
| | - Lanfang Li
- Tang Center for Herbal Medicine Research, Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medical Sciences, No. 16 Dongzhimen Nanxiaojie, Dongcheng District, Beijing, 100700, China
| | - Guihua Yu
- Tang Center for Herbal Medicine Research, Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medical Sciences, No. 16 Dongzhimen Nanxiaojie, Dongcheng District, Beijing, 100700, China
| | - Tingliang Jiang
- Tang Center for Herbal Medicine Research, Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medical Sciences, No. 16 Dongzhimen Nanxiaojie, Dongcheng District, Beijing, 100700, China
- Artemisinin Research Center, China Academy of Traditional Chinese Medical Sciences, Beijing, China
| | - Canghai Li
- Tang Center for Herbal Medicine Research, Institute of Chinese Materia Medica, China Academy of Traditional Chinese Medical Sciences, No. 16 Dongzhimen Nanxiaojie, Dongcheng District, Beijing, 100700, China.
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Souza MC, Silva JD, Pádua TA, Torres ND, Antunes MA, Xisto DG, Abreu TP, Capelozzi VL, Morales MM, Sá Pinheiro AA, Caruso-Neves C, Henriques MG, Rocco PRM. Mesenchymal stromal cell therapy attenuated lung and kidney injury but not brain damage in experimental cerebral malaria. Stem Cell Res Ther 2015; 6:102. [PMID: 25998168 PMCID: PMC4462088 DOI: 10.1186/s13287-015-0093-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 04/01/2015] [Accepted: 05/11/2015] [Indexed: 12/13/2022] Open
Abstract
Introduction Malaria is the most relevant parasitic disease worldwide, and still accounts for 1 million deaths each year. Since current antimalarial drugs are unable to prevent death in severe cases, new therapeutic strategies have been developed. Mesenchymal stromal cells (MSC) confer host resistance against malaria; however, thus far, no study has evaluated the therapeutic effects of MSC therapy on brain and distal organ damage in experimental cerebral malaria. Methods Forty C57BL/6 mice were injected intraperitoneally with 5 × 106Plasmodium berghei-infected erythrocytes or saline. After 24 h, mice received saline or bone marrow (BM)-derived MSC (1x105) intravenously and were housed individually in metabolic cages. After 4 days, lung and kidney morphofunction; cerebrum, spleen, and liver histology; and markers associated with inflammation, fibrogenesis, and epithelial and endothelial cell damage in lung tissue were analyzed. Results In P. berghei-infected mice, BM-MSCs: 1) reduced parasitemia and mortality; 2) increased phagocytic neutrophil content in brain, even though BM-MSCs did not affect the inflammatory process; 3) decreased malaria pigment detection in spleen, liver, and kidney; 4) reduced hepatocyte derangement, with an increased number of Kupffer cells; 5) decreased kidney damage, without effecting significant changes in serum creatinine levels or urinary flow; and 6) reduced neutrophil infiltration, interstitial edema, number of myofibroblasts within interstitial tissue, and collagen deposition in lungs, resulting in decreased lung static elastance. These morphological and functional changes were not associated with changes in levels of tumor necrosis factor-α, keratinocyte-derived chemokine (KC, a mouse analog of interleukin-8), or interferon-γ, which remained increased and similar to those of P. berghei animals treated with saline. BM-MSCs increased hepatocyte growth factor but decreased VEGF in the P. berghei group. Conclusions BM-MSC treatment increased survival and reduced parasitemia and malaria pigment accumulation in spleen, liver, kidney, and lung, but not in brain. The two main organs associated with worse prognosis in malaria, lung and kidney, sustained less histological damage after BM-MSC therapy, with a more pronounced improvement in lung function.
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Affiliation(s)
- Mariana C Souza
- Laboratory of Applied Pharmacology, Farmanguinhos, Oswaldo Cruz Foundation, Av Brasil, 4365, Manguinhos, CEP-21040-900, Rio de Janeiro, RJ, Brazil.
| | - Johnatas D Silva
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Av Carlos Chagas Filho, 373 Bloco G, Cidade Universitária, CEP-21941-902, Rio de Janeiro, RJ, Brazil.
| | - Tatiana A Pádua
- Laboratory of Applied Pharmacology, Farmanguinhos, Oswaldo Cruz Foundation, Av Brasil, 4365, Manguinhos, CEP-21040-900, Rio de Janeiro, RJ, Brazil.
| | - Natália D Torres
- Laboratory of Applied Pharmacology, Farmanguinhos, Oswaldo Cruz Foundation, Av Brasil, 4365, Manguinhos, CEP-21040-900, Rio de Janeiro, RJ, Brazil.
| | - Mariana A Antunes
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Av Carlos Chagas Filho, 373 Bloco G, Cidade Universitária, CEP-21941-902, Rio de Janeiro, RJ, Brazil.
| | - Debora G Xisto
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Av Carlos Chagas Filho, 373 Bloco G, Cidade Universitária, CEP-21941-902, Rio de Janeiro, RJ, Brazil.
| | - Thiago P Abreu
- Laboratory of Biochemistry and Cellular Signaling, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Av Carlos Chagas Filho, 373 Bloco G, Cidade Universitária, CEP-21941-902, Rio de Janeiro, RJ, Brazil.
| | - Vera L Capelozzi
- Department of Pathology, Faculty of Medicine, University of São Paulo, Av. Dr. Arnaldo, 455, Cerqueira César, CEP-01246903, São Paulo, SP, Brazil.
| | - Marcelo M Morales
- Laboratory of Cellular and Molecular Physiology, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Av Carlos Chagas Filho, 373 Bloco G, Cidade Universitária, CEP-21941-902, Rio de Janeiro, RJ, Brazil.
| | - Ana A Sá Pinheiro
- Laboratory of Biochemistry and Cellular Signaling, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Av Carlos Chagas Filho, 373 Bloco G, Cidade Universitária, CEP-21941-902, Rio de Janeiro, RJ, Brazil.
| | - Celso Caruso-Neves
- Laboratory of Biochemistry and Cellular Signaling, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Av Carlos Chagas Filho, 373 Bloco G, Cidade Universitária, CEP-21941-902, Rio de Janeiro, RJ, Brazil.
| | - Maria G Henriques
- Laboratory of Applied Pharmacology, Farmanguinhos, Oswaldo Cruz Foundation, Av Brasil, 4365, Manguinhos, CEP-21040-900, Rio de Janeiro, RJ, Brazil. .,National Institute for Science and Technology on Innovation on Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (Fiocruz), Av Brasil, 4365, Manguinhos, CEP-21040-900, Rio de Janeiro, RJ, Brazil.
| | - Patricia R M Rocco
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Av Carlos Chagas Filho, 373 Bloco G, Cidade Universitária, CEP-21941-902, Rio de Janeiro, RJ, Brazil.
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LaCrue AN, Scheel M, Kennedy K, Kumar N, Kyle DE. Effects of artesunate on parasite recrudescence and dormancy in the rodent malaria model Plasmodium vinckei. PLoS One 2011; 6:e26689. [PMID: 22039533 PMCID: PMC3200358 DOI: 10.1371/journal.pone.0026689] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Accepted: 10/02/2011] [Indexed: 11/25/2022] Open
Abstract
Artemisinin (ART) is the recommended first line therapy for treating uncomplicated and drug-resistant Plasmodium falciparum, the most pathogenic form of malaria. However, treatment failure following ART monotherapy is not uncommon and resistance to this rapidly acting drug has been reported in the Thai-Cambodian border. Recent in vitro studies have shown that following treatment with dihydroartemisinin (DHA), the development of ring-stage parasites is arrested for up to 20 days. These arrested (i.e. dormant) rings could be responsible for the recrudescence of infection that is observed following ART monotherapy. To develop a better understanding of the stage-specific effects of ART and determine if dormancy occurs in vivo, the ART derivative artesunate (AS) was used to treat mice infected with the synchronous rodent malaria parasites P. vinckei petteri (non-lethal) and P. v. vinckei (lethal). Results show that in both the non-lethal and lethal strains, ring-stage parasites are the least susceptible to treatment with AS and that the day of treatment has more of an impact on recrudescence than the total dose administered. Additionally, 24 hrs post-treatment with AS, dormant forms similar in morphology to those seen in vitro were observed. Finally, rate of recrudescence studies suggest that there is a positive correlation between the number of dormant parasites present and when recrudescence occurs in the vertebrate host. Collectively, these data suggest that dormancy occurs in vivo and contributes to recrudescence that is observed following AS treatment. It is possible that this may represent a novel mechanism of parasite survival following treatment with AS.
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Affiliation(s)
- Alexis N. LaCrue
- Department of Global Health, University of South Florida, Tampa, Florida, United States of America
- * E-mail: (DEK); (ANL)
| | - Misty Scheel
- Department of Global Health, University of South Florida, Tampa, Florida, United States of America
| | - Katherine Kennedy
- Department of Global Health, University of South Florida, Tampa, Florida, United States of America
| | - Nikesh Kumar
- Department of Global Health, University of South Florida, Tampa, Florida, United States of America
| | - Dennis E. Kyle
- Department of Global Health, University of South Florida, Tampa, Florida, United States of America
- * E-mail: (DEK); (ANL)
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