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Reis LFCD, Cerdeira CD, Silva LCC, Ramos ABSB, Silva JEC, Castro AP, Ventura RR, Souza RLM, Marques MJ, Novaes RD. Dietary glycemic and energy load differentially modulates Schistosoma mansoni-induced granulomatous inflammation and response to antiparasitic chemotherapy. Acta Trop 2024; 252:107141. [PMID: 38342286 DOI: 10.1016/j.actatropica.2024.107141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/09/2023] [Accepted: 02/02/2024] [Indexed: 02/13/2024]
Abstract
The impact of diet composition and energy content on schistosomiasis evolution and treatment efficacy is still controversial. This study compared the impact of sucrose-rich diet and intermittent fasting on Schistosoma mansoni infection and praziquantel (PZQ)-based chemotherapy response in mice. BALB/c mice were infected with S. mansoni and followed for 15 weeks. The animals were randomized into nine groups receiving high glycemic load (high-sucrose diet - HSD), low caloric load (standard chow alternate-day fasting - ADF), and standard chow ad libitum (AL). Eight weeks after S. mansoni infection, these groups remained untreated or were treated with PZQ (300 mg/kg/day) for 3 days. Our results indicated that parasite load (S. mansoni eggs and parasite DNA levels), granulomatous inflammation (granulomas number and size), and liver microstructural damage (reduction in hepatocytes number, increase in nucleus-cytoplasm ratio, connective stroma expansion and fibrosis) were increased in ADF-treated animals. These animals also showed decreased eggs retention, granulomatous inflammation and collagen accumulation in the small intestine. Conversely, HSD diet and PZQ treatment attenuated all these parameters and stimulated hepatic regenerative response. PZQ also stimulated fibrosis resolution in HSD-treated mice, effect that was limited ADF-exposed mice. Our findings indicate that dietary glycemic and energy load can modulate schistosomiasis progression and the severity of hepatic and intestinal granulomatous inflammation in untreated and PZQ-treated mice. Thus, lower intestinal eggs retention may potentially be linked to worsening liver disease in ADF, while attenuation of hepatic and intestinal granulomatous inflammation is consistent with reduced parasite load in HSD- and PZQ-treated animals.
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Affiliation(s)
- Luis F C Dos Reis
- Instituto d e Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas, Minas Gerais 37130-001, Brazil
| | - Cláudio D Cerdeira
- Departamento de Bioquímica, Universidade Federal de Alfenas, Alfenas, Minas Gerais, 37130-001, Brazil
| | - Laís C C Silva
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Alfenas, Alfenas Minas Gerais, 37130-001, Brazil
| | - Amanda B S B Ramos
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Alfenas, Alfenas Minas Gerais, 37130-001, Brazil
| | - José Edson C Silva
- Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas, Minas Gerais 37130-001, Brazil
| | - Aline P Castro
- Instituto d e Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas, Minas Gerais 37130-001, Brazil
| | - Renato R Ventura
- Instituto d e Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas, Minas Gerais 37130-001, Brazil
| | - Raquel L M Souza
- Instituto d e Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas, Minas Gerais 37130-001, Brazil; Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas, Minas Gerais 37130-001, Brazil
| | - Marcos J Marques
- Instituto d e Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas, Minas Gerais 37130-001, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal de Alfenas, Alfenas Minas Gerais, 37130-001, Brazil; Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas, Minas Gerais 37130-001, Brazil
| | - Rômulo D Novaes
- Instituto d e Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas, Minas Gerais 37130-001, Brazil; Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas, Minas Gerais 37130-001, Brazil.
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2
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El-Shorbagy AA, Shafaa MW, Salah Elbeltagy R, El-Hennamy RE, Nady S. Liposomal IL-22 ameliorates liver fibrosis through miR-let7a/STAT3 signaling in mice. Int Immunopharmacol 2023; 124:111015. [PMID: 37827055 DOI: 10.1016/j.intimp.2023.111015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 09/24/2023] [Accepted: 09/28/2023] [Indexed: 10/14/2023]
Abstract
The therapeutic effect of liposomal IL-22 versus non-liposomal IL-22 on liver fibrosis was investigated. IL-22 (5 µg/ml) was incorporated into negative charged liposomes. Schistosoma mansoni infected mice were treated with liposomal IL-22 for either 7 or 14 days before decapitation. Liver and spleen were removed and splenocytes were isolated for in vitro investigations. TNF-α, IL-17, IL-22 and IgE levels were assessed. Hepatic granulomas were counted, granuloma index and its developmental stages were calculated. Hepatic expressions of STAT3, β-catenin and let-7a miRNA were evaluated. Liposomal IL-22 size was clustered around 425.9 ± 58.0 nm with negative zeta potential (-18.8 ± 1.3 mV). After 14 days, 65.5% of IL-22 was released from liposomal IL-22 as was gradually observed in vitro. Liposomal IL-22 significantly (p < 0.05) decreased IL-17 level (-33.1%) of healthy splenocytes compared to non-liposomal IL-22. In vivo therapeutic effect of liposomal IL-22 revealed a significant (p < 0.05) decrease in hepatic granuloma index (-22.1%) and levels of TNF-α (-49.2%) and IL-17 (-57.3%), but a marked increase in IL-22 (64.2%) and IgE (196.1%) levels comparing to non-liposomal IL-22. Three developmental stages of hepatic granuloma (NE, EP, and P) were observed in liposomal and non-liposomal IL-22 groups (79.6 ± 1.7 and 81.8 ± 8.7, respectively, P < 0.05), with higher relative frequency of EP stage. Additionally, liposomal IL-22 treatment increased hepatic expression of STAT3 (21.7 fold change) and let-7a (3.6 fold change) and reduced β-catenin expression (0.6 fold change) compared to healthy mice. Conclusively, liposomal IL-22 seems more effective in the treatment of liver fibrosis resulting from S. mansoni infection than non-liposomal IL-22.
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Affiliation(s)
| | - Medhat W Shafaa
- Physics Department, Faculty of Science, Helwan University, Cairo, Egypt
| | - Rasha Salah Elbeltagy
- Departments of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
| | - Rehab E El-Hennamy
- Departments of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
| | - Soad Nady
- Departments of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt.
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3
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Amer AS, Othman AA, Dawood LM, El-Nouby KA, Gobert GN, Abou Rayia DM. The interaction of Schistosoma mansoni infection with diabetes mellitus and obesity in mice. Sci Rep 2023; 13:9417. [PMID: 37296126 PMCID: PMC10256771 DOI: 10.1038/s41598-023-36112-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 05/30/2023] [Indexed: 06/12/2023] Open
Abstract
Human schistosomiasis is one of the most prevalent parasitic diseases worldwide. Various host factors can affect the host-parasite interactions. Therefore, the aim of the present work was to determine the parasitological, histopathological, biochemical, and immunological status of Schistosoma mansoni-infected hosts with metabolic disorders to identify the underlying possible mechanisms of these comorbidities. The study animals were divided into four groups. Group I represented the control groups, namely, the normal control group, the S. mansoni-infected control group, and the noninfected type 1 diabetes (T1DM), type 2 diabetes (T2DM), and obesity groups. The mice of the other three groups underwent induction of T1DM (Group II), T2DM (Group III) and obesity (Group IV) before being infected with S. mansoni. All mice were subjected to body weight measurement, blood glucose and insulin assessment, parasitological evaluation of adult worm count, tissue egg count and intestinal oogram. Histopathological and immunohistochemical study using anti-glial fibrillary acidic protein (GFAP) in hepatic stellate cells (HSCs) and image analysis of Masson's trichrome-stained liver sections using ImageJ (Fiji) software were carried out. Additionally, immunological analysis of tumour necrosis factor (TNF) beta, interleukin-5 (IL-5), IL-10, Forkhead box P3 (FOXP3) and pentraxin 3 (PTX3) levels besides biochemical study of total lipid profile were evaluated. The present study revealed a significant increase in the adult worm count and tissue egg output in the obesity group compared to the infected control group. The oogram of counted eggs showed prevalence of immature eggs in T1DM group, while T2DM and obese groups showed prevalence of mature eggs. The fibrosis area percentage showed significant increase in T2DM and obese groups while it was decreased in T1DM group in comparison to infected control group. Our data also showed significant increase in the levels of TNF-β, IL-5, PTX3 in T1DM, T2DM and obesity groups in comparison to infected control group, whilst the levels of FOXP3 and IL-10 were increased in the infected groups in comparison to their noninfected controls. Moreover, infected T1DM, T2DM and obesity groups showed higher blood glucose and lipid profile in comparison to the infected control group. However, these parameters were improved in comparison to their noninfected controls. In sum, induction of T2DM and obesity increased tissue egg counts, mature egg percentage, and fibrosis density, while schistosome infection induced changes in the lipid profile and blood glucose levels in infected diabetic and obese groups and impacted favorably insulin levels in obese mice. By better understanding the complexities of host-parasite interactions, efforts to reduce the burden of these debilitating diseases can be improved.
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Affiliation(s)
- Alaa S Amer
- Medical Parasitology Department, Faculty of Medicine, Tanta University, Tanta, 31527, Egypt.
| | - Ahmad A Othman
- Medical Parasitology Department, Faculty of Medicine, Tanta University, Tanta, 31527, Egypt
| | - Lamees M Dawood
- Biochemistry Department, Faculty of Medicine, Tanta University, Tanta, 31527, Egypt
| | - Kholoud A El-Nouby
- Medical Parasitology Department, Faculty of Medicine, Tanta University, Tanta, 31527, Egypt
| | - Geoffrey N Gobert
- School of Biological Science, Institute for Global Food Security, Queen's University Belfast, Belfast, BT9 5DL, UK
| | - Dina M Abou Rayia
- Medical Parasitology Department, Faculty of Medicine, Tanta University, Tanta, 31527, Egypt
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Licá ICL, Frazão GCCG, Nogueira RA, Lira MGS, dos Santos VAF, Rodrigues JGM, Miranda GS, Carvalho RC, Silva LA, Guerra RNM, Nascimento FRF. Immunological mechanisms involved in macrophage activation and polarization in schistosomiasis. Parasitology 2023; 150:401-415. [PMID: 36601859 PMCID: PMC10089811 DOI: 10.1017/s0031182023000021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 12/21/2022] [Accepted: 12/24/2022] [Indexed: 01/06/2023]
Abstract
Human schistosomiasis is caused by helminths of the genus Schistosoma. Macrophages play a crucial role in the immune regulation of this disease. These cells acquire different phenotypes depending on the type of stimulus they receive. M1 macrophages can be ‘classically activated’ and can display a proinflammatory phenotype. M2 or ‘alternatively activated’ macrophages are considered anti-inflammatory cells. Despite the relevance of macrophages in controlling infections, the role of the functional types of these cells in schistosomiasis is unclear. This review highlights different molecules and/or macrophage activation and polarization pathways during Schistosoma mansoni and Schistosoma japonicum infection. This review is based on original and review articles obtained through searches in major databases, including Scopus, Google Scholar, ACS, PubMed, Wiley, Scielo, Web of Science, LILACS and ScienceDirect. Our findings emphasize the importance of S. mansoni and S. japonicum antigens in macrophage polarization, as they exert immunomodulatory effects in different stages of the disease and are therefore important as therapeutic targets for schistosomiasis and in vaccine development. A combination of different antigens can provide greater protection, as it possibly stimulates an adequate immune response for an M1 or M2 profile and leads to host resistance; however, this warrants in vitro and in vivo studies.
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Affiliation(s)
- Irlla Correia Lima Licá
- Graduate Program in Health Sciences, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
- Laboratory of Immunophysiology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
| | - Gleycka Cristine Carvalho Gomes Frazão
- Graduate Program in Health Sciences, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
- Laboratory of Immunophysiology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
| | - Ranielly Araujo Nogueira
- Graduate Program in Health Sciences, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
- Laboratory of Immunophysiology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
| | - Maria Gabriela Sampaio Lira
- Graduate Program in Health Sciences, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
- Laboratory of Immunophysiology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
| | - Vitor Augusto Ferreira dos Santos
- Graduate Program in Health Sciences, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
- Laboratory of Immunophysiology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
| | - João Gustavo Mendes Rodrigues
- Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Guilherme Silva Miranda
- Department of Biology, Federal Institute of Education, Science and Technology of Maranhão, São Raimundo das Mangabeiras, Brazil
| | - Rafael Cardoso Carvalho
- Graduate Program in Health Sciences, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
| | - Lucilene Amorim Silva
- Graduate Program in Health Sciences, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
- Laboratory of Immunophysiology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
- Department of Pathology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
| | - Rosane Nassar Meireles Guerra
- Graduate Program in Health Sciences, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
- Laboratory of Immunophysiology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
- Department of Pathology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
| | - Flávia Raquel Fernandes Nascimento
- Graduate Program in Health Sciences, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
- Laboratory of Immunophysiology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
- Department of Pathology, Center for Biological and Health Sciences, Federal University of Maranhão, São Luís, MA, Brazil
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5
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Malta KK, Palazzi C, Neves VH, Aguiar Y, Silva TP, Melo RCN. Schistosomiasis Mansoni-Recruited Eosinophils: An Overview in the Granuloma Context. Microorganisms 2022; 10:microorganisms10102022. [PMID: 36296298 PMCID: PMC9607553 DOI: 10.3390/microorganisms10102022] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 10/08/2022] [Accepted: 10/09/2022] [Indexed: 11/16/2022] Open
Abstract
Eosinophils are remarkably recruited during schistosomiasis mansoni, one of the most common parasitic diseases worldwide. These cells actively migrate and accumulate at sites of granulomatous inflammation termed granulomas, the main pathological feature of this disease. Eosinophils colonize granulomas as a robust cell population and establish complex interactions with other immune cells and with the granuloma microenvironment. Eosinophils are the most abundant cells in granulomas induced by Schistosoma mansoni infection, but their functions during this disease remain unclear and even controversial. Here, we explore the current information on eosinophils as components of Schistosoma mansoni granulomas in both humans and natural and experimental models and their potential significance as central cells triggered by this infection.
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Brandão-Bezerra L, Aparecida da Rosa A, Figueiredo de Oliveira RM, Neves RH, Corrêa CL, Machado-Silva JR. Impact of acute schistosomiasis mansoni and long-term ethanol intake on mouse liver pathology. Exp Parasitol 2022; 242:108388. [PMID: 36174706 DOI: 10.1016/j.exppara.2022.108388] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 09/08/2022] [Accepted: 09/21/2022] [Indexed: 11/26/2022]
Abstract
While the effect of ethanol and schistosomiasis mansoni on liver injury has been well-documented, the influence of comorbidity on liver pathology remains unclear. To address this gap, schistosomiasis-infected mice were given one daily dose of 18% ethanol for 28 consecutive days, from day 35 post-infection. Mice were assigned to four groups: A. control; B. uninfected/ethanol gavage; C. infected; and D. infected/ethanol gavage. At day 64 post-infection, mice were euthanized by CO2 asphyxiation, livers were excised, fixed in 10% buffered formalin, paraffin embedded and cut into 5 μm sections. These were stained with hematoxylin and eosin (HE), Lennert's Giemsa and picrosirius red (for polarization microscopy) to assess histopathological and stereological changes. Group B showed alcoholic liver disease (ALD), including microsteatosis, hepatocyte karyopyknosis, karyorrhexis, karyolysis, increased frequency of Kupffer cells, hydropic degeneration of hepatocyte, thickened plasma membrane and binucleated hepatocytes. Infected mice showed typical exudative and exudative-productive hepatic granulomas, and destruction of the adjacent hepatic parenchyma, resulting in necrotic tissue and periovular leukocyte infiltrate. Group D showed hyperemia (parenchymal panlobular lesions), and liquefactive necrosis in hepatic abscess area. There was also reduced liver collagen deposition (-76%; p = 0.0001) and reduced microsteatosis (-80%, p = 0.0079) compared to group C and group B, respectively. In conclusion, comorbidity exacerbated liver damage.
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Affiliation(s)
- Luciana Brandão-Bezerra
- Romero Lascasas Porto Laboratory of Helminthology, Department of Microbiology, Immunology and Parasitology, Medical Sciences College (FCM), Rio de Janeiro State University (UERJ), Rio de Janeiro, Brazil
| | - Aline Aparecida da Rosa
- Romero Lascasas Porto Laboratory of Helminthology, Department of Microbiology, Immunology and Parasitology, Medical Sciences College (FCM), Rio de Janeiro State University (UERJ), Rio de Janeiro, Brazil
| | - Regina Maria Figueiredo de Oliveira
- Romero Lascasas Porto Laboratory of Helminthology, Department of Microbiology, Immunology and Parasitology, Medical Sciences College (FCM), Rio de Janeiro State University (UERJ), Rio de Janeiro, Brazil
| | - Renata Heisler Neves
- Romero Lascasas Porto Laboratory of Helminthology, Department of Microbiology, Immunology and Parasitology, Medical Sciences College (FCM), Rio de Janeiro State University (UERJ), Rio de Janeiro, Brazil
| | - Christiane Leal Corrêa
- Department of Pathology and Laboratories, Medical Sciences College (FCM), Rio de Janeiro State University (UERJ), Brazil. Medical College, Estácio de Sá University, Rio de Janeiro, Brazil
| | - José Roberto Machado-Silva
- Romero Lascasas Porto Laboratory of Helminthology, Department of Microbiology, Immunology and Parasitology, Medical Sciences College (FCM), Rio de Janeiro State University (UERJ), Rio de Janeiro, Brazil.
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7
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Miranda GS, Rodrigues JGM, de Rezende MC, Resende SD, Camelo GMA, de Oliveira Silva JKA, Maggi L, Rodrigues VF, de Oliveira VG, Negrão-Corrêa DA. Experimental infection with Schistosoma mansoni isolated from the wild rodent Holochilus sciureus shows a low parasite burden but induces high schistosomiasis severity in BALB/c mice. Parasitology 2022; 149:1381-1396. [PMID: 35641335 PMCID: PMC11010505 DOI: 10.1017/s0031182022000774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 05/21/2022] [Accepted: 05/24/2022] [Indexed: 11/06/2022]
Abstract
Wild mammals, especially rodents, can participate in the life cycle of Schistosoma mansoni; however, the impact of these parasite strains on the severity of schistosomiasis remains unclear. The aim of this study was to comparatively evaluate the parasitological and immunopathological alterations induced by an S. mansoni strain isolated from the wild rodent Holochilus sciureus (HS strain) and a parasite strain isolated from a human (LE strain) in experimentally infected mice. Male BALB/c mice were subcutaneously infected with 50 cercariae/mouse of either the HS or the LE strain and were evaluated for 12 weeks. In the experimental groups, the parasite burden was estimated by worm and egg (feces and tissues) count, and immunopathological alterations were evaluated in the liver and intestines. Compared to experimental infection with the LE parasite strain, HS-infected mice showed reduced number of parasite worms but higher fecundity rate, significant reduction in IL-5, IL-10 and IL-13 concentrations, lower EPO-activity in liver homogenate and higher concentrations of TNF-α, IFN-γ, IL-12 and IL-17 in the small intestine homogenate. Moreover, HS infection resulted in higher concentrations of NO end-products in both the liver and intestine, suggesting a predominance of the Th1/Th17 immune response. HS-infected mice also showed higher plasma transaminase levels, formed larger granulomas, and had a higher mortality rate in comparison with LE-infected mice. Data indicate that BALB/c mice infected with the HS strain of S. mansoni showed reduced susceptibility to the parasite but stronger tissue inflammation and high disease severity.
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Affiliation(s)
- Guilherme Silva Miranda
- Department of Parasitology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Brazil
- Department of Biology, Federal Institute of Education, Science and Technology of Maranhão, São Raimundo das Mangabeiras, Brazil
| | - João Gustavo Mendes Rodrigues
- Department of Parasitology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Brazil
| | - Michelle Carvalho de Rezende
- Department of Parasitology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Brazil
| | - Samira Diniz Resende
- Department of Parasitology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Brazil
| | - Genil Mororó Araújo Camelo
- Department of Parasitology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Brazil
| | | | - Laura Maggi
- Department of Parasitology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Brazil
| | - Vanessa Fernandes Rodrigues
- Department of Parasitology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Brazil
| | - Vinícius Gustavo de Oliveira
- Department of Parasitology, Federal University of Minas Gerais, Institute of Biological Sciences, Belo Horizonte, Brazil
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8
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Rodrigues JGM, Lira MGS, Nogueira RA, Gomes GCC, Licá ICL, Silva JKADO, Miranda GS, Silva-Souza N. Alterations in blood glucose concentration in wild rodents, Holochilus sciureus, naturally infected with Schistosoma mansoni. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2022; 31:e021921. [PMID: 35352759 PMCID: PMC9901889 DOI: 10.1590/s1984-29612022019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 02/25/2022] [Indexed: 11/22/2022]
Abstract
The present study aimed to evaluate the changes in peripheral blood glucose concentrations induced by Schistosoma mansoni infection in Holochilus sciureus rodents, a wild reservoir of the parasite. Glucose concentration was measured in the plasma of blood samples using a colorimetric enzymatic test. Biological parameters and S. mansoni burden in each rodent were also verified and correlated with glucose concentrations. A total of 76 H. sciureus were captured, out of which 20 (26%) were infected with S. mansoni (n=13 males and n=7 females). Although the parasite burden was comparable between the sexes, blood glucose concentration was lower in infected males and almost unchanged in females. Furthermore, histopathological data revealed that male rodents had a greater hepatic granulomatous inflammatory reaction than females. In addition, we also confirmed that the weight and total length of the analyzed animals had no effect on glucose levels. Therefore, natural infection with S. mansoni in H. sciureus may have a lower impact on glycemic homeostasis in females, which will help us understand the role of these rodents as reservoirs of S. mansoni.
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Affiliation(s)
- João Gustavo Mendes Rodrigues
- Programa de Pós-graduação em Parasitologia, Universidade Federal de Minas Gerais – UFMG, Belo Horizonte, MG, Brasil
- Departamento de Química e Biologia, Universidade Estadual do Maranhão – UEMA, São Luís, MA, Brasil
| | - Maria Gabriela Sampaio Lira
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Maranhão – UFMA, São Luís, MA, Brasil
| | - Ranielly Araújo Nogueira
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Maranhão – UFMA, São Luís, MA, Brasil
| | | | - Irlla Correia Lima Licá
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Maranhão – UFMA, São Luís, MA, Brasil
| | | | - Guilherme Silva Miranda
- Programa de Pós-graduação em Parasitologia, Universidade Federal de Minas Gerais – UFMG, Belo Horizonte, MG, Brasil
- Departamento de Biologia, Instituto Federal de Educação, Ciência e Tecnologia do Maranhão, São Raimundo das Mangabeiras, MA, Brasil
| | - Nêuton Silva-Souza
- Departamento de Química e Biologia, Universidade Estadual do Maranhão – UEMA, São Luís, MA, Brasil
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9
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Evaluation of Antischistosomal Activities of Crude Aqueous Extracts of Artemisia annua, Nigella sativa, and Allium sativum against Schistosoma mansoni in Hamsters. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5172287. [PMID: 35313628 PMCID: PMC8934242 DOI: 10.1155/2022/5172287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/24/2021] [Accepted: 02/23/2022] [Indexed: 11/30/2022]
Abstract
Schistosomiasis is a neglected disease, as the World Health Organization classified it in the second category after malaria. World Health Organization approved praziquantel (PZQ) as the only chemotherapy to treat schistosomiasis. Over the years, some problems have arisen with PZQ, as it showed poor efficacy in the early stages of infection as well as the emergence of some resistance to it. In searching for new alternative drugs to treat schistosomiasis, the researchers intensified their efforts to find a new drug. The present study focuses on evaluating the effect of three plant extracts Artemisia annua, Nigella sativa, and Allium sativum at different doses of 31.25, 62.5, 125, 250, and, 500 μg/ml; in vitro study was accomplished on the Schistosoma mansoni adult worms. The results declared that the concentration of 500, 250, and 125 of Artemisia annua was more effective on adult worms, and the same concentrations of Nigella sativa and Allium sativum gave less effect on the adult worms than the previous plant. In vivo study was accomplished on the hamster's tissue after exposing it to doses of the plants' extracts with different concentrations; it showed the presence of calcifications and damage to the worm eggs in the liver and spleen, as well as reducing the size of granulomas. After conducting many confirmatory studies Artemisia annua extract can be used as an effective and safe treatment for Schistosoma disease.
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Jatsa HB, Femoe UM, Dongmo CN, Kamwa RIN, Fesuh BN, Tchuem Tchuente LA, Kamtchouing P. Reduction of testosterone levels in Schistosoma haematobium- or Schistosoma mansoni-infected men: a cross-sectional study in two schistosomiasis-endemic areas of the Adamawa region of Cameroon. BMC Infect Dis 2022; 22:230. [PMID: 35255836 PMCID: PMC8900354 DOI: 10.1186/s12879-022-07195-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 02/22/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The incidence of schistosomiasis-induced male reproductive dysfunction and infertility is probably underestimated compared to female genital schistosomiasis. This study aimed to investigate the impact of Schistosoma haematobium or S. mansoni infection on the reproductive function of men of reproductive age in Tibati and Wouldé, two endemic schistosomiasis areas in the Adamawa region of Cameroon. METHODS A total of 89 men of reproductive age (range 14-56 years) from two localities were enrolled in the study, with 51 in Tibati and 38 in Wouldé. Each participant was submitted to a questionnaire to document data on sociodemographic and stream contact behaviors. A medical examination was performed to measure the testes' circumference and evaluate genital tract pathologies. Stool and urine samples were collected and screened for the presence of S. haematobium or S. mansoni ova. Blood serum was used to assess the levels of transaminases and testosterone. RESULTS Schistosoma haematobium was present only in Tibati, with a prevalence of 31.37%. The S. mansoni prevalence was 3.92% at Tibati and 44.71% at Wouldé. The intensity of infection was 22.12 ± 9.57 eggs/10 mL for S. haematobium and 128.10 ± 3.76 epg for S. mansoni. Serum transaminase activity and the mean testicular circumference of Schistosoma-positive individuals were close to Schistosoma-negative individuals. However, the testes size was more prominent in S. mansoni-positive individuals than in S. haematobium-positive individuals (P < 0.05). The serum testosterone levels of S. haematobium- and S. mansoni-positive men were significantly reduced by 56.07% (P < 0.001) and 51.94% (P < 0.01), respectively, in comparison to those of Schistosoma-negative men. A significant and negative correlation was established between schistosomiasis and the low serum testosterone level. Male genital tract pathologies such as scrotal abnormalities, varicocele, nodular epididymis, inguinal hernia, and hydrocele were recorded in both Schistosoma-positive and Schistosoma-negative men. However, no significant link was established between schistosomiasis infection and these pathologies. CONCLUSION These results demonstrated that infection with S. haematobium or S. mansoni is associated with low production of the reproductive hormone testosterone and may be a significant cause of male infertility.
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Affiliation(s)
- Hermine Boukeng Jatsa
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon. .,Centre for Schistosomiasis and Parasitology, P.O. Box 7244, Yaoundé, Cameroon.
| | - Ulrich Membe Femoe
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon.,Centre for Schistosomiasis and Parasitology, P.O. Box 7244, Yaoundé, Cameroon
| | - Calvine Noumedem Dongmo
- Centre for Schistosomiasis and Parasitology, P.O. Box 7244, Yaoundé, Cameroon.,Laboratory of Parasitology and Ecology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | | | - Betrand Nono Fesuh
- Laboratory of Mathematical Engineering and Information System, Department of Mathematics, National Advances School of Engineering of Yaoundé, University of Yaoundé I, P.O. Box 8390, Yaoundé, Cameroon
| | - Louis-Albert Tchuem Tchuente
- Centre for Schistosomiasis and Parasitology, P.O. Box 7244, Yaoundé, Cameroon.,Laboratory of Parasitology and Ecology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Pierre Kamtchouing
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
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11
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Malta KK, Silva TP, Palazzi C, Neves VH, Carmo LAS, Cardoso SJ, Melo RCN. Changing our view of the Schistosoma granuloma to an ecological standpoint. Biol Rev Camb Philos Soc 2021; 96:1404-1420. [PMID: 33754464 DOI: 10.1111/brv.12708] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 12/27/2022]
Abstract
Schistosomiasis, a neglected parasitic tropical disease that has plagued humans for centuries, remains a major public health burden. A primary challenge to understanding schistosomiasis is deciphering the most remarkable pathological feature of this disease, the granuloma - a highly dynamic and self-organized structure formed by both host and parasite components. Granulomas are considered a remarkable example of how parasites evolved with their hosts to establish complex and intimate associations. However, much remains unclear regarding life within the granuloma, and strategies to restrain its development are still lacking. Here we explore current information on the hepatic Schistosoma mansoni granuloma in the light of Ecology and propose that this intricate structure acts as a real ecosystem. The schistosomal granuloma is formed by cells (biotic component), protein scaffolds, fibres, and chemical compounds (abiotic components) with inputs/outputs of energy and matter, as complex as in classical ecosystems. We review the distinct cell populations ('species') within the granuloma and examine how they integrate with each other and interact with their microenvironment to form a multifaceted cell community in different space-time frames. The colonization of the hepatic tissue to form granulomas is explained from the point of view of an ecological succession whereby a community is able to modify its physical environment, creating conditions and resources for ecosystem construction. Remarkably, the granuloma represents a dynamic evolutionary system that undergoes progressive changes in the 'species' that compose its community over time. In line with ecological concepts, we examine the granuloma not only as a place where a community of cells is settled (spatial niche or habitat) but also as a site in which the functional activities of these combined populations occur in an orchestrated way in response to microenvironmental gradients such as cytokines and egg antigens. Finally, we assert how the levels of organization of cellular components in a granuloma as conventionally defined by Cell Biology can fit perfectly into a hierarchical structure of biological systems as defined by Ecology. By rethinking the granuloma as an integrating and evolving ecosystem, we draw attention to the inner workings of this structure that are central to the understanding of schistosomiasis and could guide its future treatment.
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Affiliation(s)
- Kássia K Malta
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, São Pedro, Juiz de Fora, MG, 36036-900, Brazil.,Graduate Program in Biodiversity, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, São Pedro, Juiz de Fora, MG, 36036-900, Brazil
| | - Thiago P Silva
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, São Pedro, Juiz de Fora, MG, 36036-900, Brazil.,Graduate Program in Biodiversity, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, São Pedro, Juiz de Fora, MG, 36036-900, Brazil
| | - Cinthia Palazzi
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, São Pedro, Juiz de Fora, MG, 36036-900, Brazil.,Graduate Program in Cell Biology, Federal University of Minas Gerais, Belo Horizonte, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31270-901, Brazil
| | - Vitor H Neves
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, São Pedro, Juiz de Fora, MG, 36036-900, Brazil.,Graduate Program in Cell Biology, Federal University of Minas Gerais, Belo Horizonte, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31270-901, Brazil
| | - Lívia A S Carmo
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, São Pedro, Juiz de Fora, MG, 36036-900, Brazil.,Department of Medicine, Federal University of Alagoas, Rodovia AL-115, Bom Sucesso, Arapiraca, AL, 57309-005, Brazil
| | - Simone J Cardoso
- Graduate Program in Biodiversity, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, São Pedro, Juiz de Fora, MG, 36036-900, Brazil.,Laboratory of Plankton Ecology, Department of Zoology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, São Pedro, Juiz de Fora, MG, 36036-900, Brazil
| | - Rossana C N Melo
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, São Pedro, Juiz de Fora, MG, 36036-900, Brazil.,Graduate Program in Biodiversity, Federal University of Juiz de Fora, Rua José Lourenço Kelmer, São Pedro, Juiz de Fora, MG, 36036-900, Brazil.,Graduate Program in Cell Biology, Federal University of Minas Gerais, Belo Horizonte, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31270-901, Brazil
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12
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Maciel PS, Gonçalves R, Antonelli LRDV, Fonseca CT. Schistosoma mansoni Infection Is Impacted by Malnutrition. Front Microbiol 2021; 12:635843. [PMID: 33815321 PMCID: PMC8017134 DOI: 10.3389/fmicb.2021.635843] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/17/2021] [Indexed: 12/12/2022] Open
Abstract
Schistosomiasis remains one of the most important neglected tropical diseases in the world. It mainly affects developing countries, where it often coexists with malnutrition. Despite this, few studies have investigated the relationship between schistosomiasis and malnutrition. Herein, we evaluate the impact of malnutrition on experimental S. mansoni infection. Mice were divided into 5 groups: Control (Ctrl) diet (14% protein and 10% lipids), low-protein 3% (LP 3%), low-protein 8% (LP 8%), low-fat 2.5% (LF 2.5%), and low-fat 5% (LF 5%). Mice were fed with their respective diets and were infected when a difference of approximately 20% in the body weight between mice from any experimental group and mice from the control group was achieved. Nutritional, parasitological, and immunological parameters were assessed either just before infection and/or approximately 50 days later before mice were perfused. Our results showed that the 3% low-protein diet was the only one capable of establishing malnutrition in mice. Mice fed with this diet showed: (i) significant reduction in body weight and serum albumin levels before infection, (ii) decreased levels of all biochemical parameters evaluated before perfusion, (iii) decreased numbers of schistosome eggs trapped in intestines and impaired parasite fecundity, (iv) a delay in the granuloma development with a smaller granuloma area, and (v) reduced levels of IL-4 and IFN-γ in the liver. Our findings demonstrate that low protein supply leads to malnutrition in mice and impacts the cytokine milieu in the liver and granuloma formation. Additionally, the establishment of our murine malnutrition model will enable future studies aiming to better understand the complex relationships between nutrition, immune responses, and infection outcome.
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Affiliation(s)
- Poliane Silva Maciel
- Laboratório de Biologia e Imunologia de Doenças Infecciosas e Parasitárias, Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
| | - Ricardo Gonçalves
- Laboratório de Biologia de Monócitos e Macrófagos, Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Lis Ribeiro do Valle Antonelli
- Laboratório de Biologia e Imunologia de Doenças Infecciosas e Parasitárias, Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
| | - Cristina Toscano Fonseca
- Laboratório de Biologia e Imunologia de Doenças Infecciosas e Parasitárias, Instituto René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brazil
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Miranda GS, Resende SD, Cardoso DT, Camelo GMA, Silva JKAO, de Castro VN, Geiger SM, Carneiro M, Negrão-Corrêa D. Previous History of American Tegumentary Leishmaniasis Alters Susceptibility and Immune Response Against Schistosoma mansoni Infection in Humans. Front Immunol 2021; 12:630934. [PMID: 33777015 PMCID: PMC7990892 DOI: 10.3389/fimmu.2021.630934] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 02/18/2021] [Indexed: 01/21/2023] Open
Abstract
Schistosomiasis and Leishmaniasis are chronic parasitic diseases with high prevalence in some tropical regions and, due to their wide distribution, a risk of co-infections is present in some areas. Nevertheless, the impact of this interaction on human populations is still poorly understood. Thus, the current study evaluated the effect of previous American Tegumentary Leishmaniasis (ATL) on the susceptibility and immune response to Schistosoma mansoni infection in residents from a rural community in Northern of Minas Gerais state, Brazil, an area endemic for both parasitic infections. The participants answered a socioeconomic questionnaire and provided stool and blood samples for parasitological and immunological evaluations. Stool samples were examined by a combination of parasitological techniques to identify helminth infections, especially S. mansoni eggs. Blood samples were used for hemograms and to measure the serum levels of cytokines and chemokines. Reports on previous ATL were obtained through interviews, clinical evaluation forms, and medical records. S. mansoni infection was the most prevalent parasitic infection in the study population (46%), and the majority of the infected individuals had a very low parasite burden. In the same population, 93 individuals (36.2%) reported previous ATL, and the prevalence of S. mansoni infection among these individuals was significantly higher than among individuals with no ATL history. A multiple logistic regression model revealed that S. mansoni infection was positively associated with higher levels of CCL3 and CCL17, and a higher frequency of IL-17 responders. Moreover, this model demonstrated that individuals with an ATL history had a 2-fold higher probability to be infected with S. mansoni (OR = 2.0; 95% CI 1.04–3.68). Among S. mansoni-infected individuals, the logistic regression demonstrated that a previous ATL history was negatively associated with the frequency of IL-17 responders and CXCL10 higher responders, but positively associated with higher IL-27 responders. Altogether, our data suggest that previous ATL may alter the susceptibility and the immune response in S. mansoni-infected individuals, which may likely affect the outcome of schistosomiasis and the severity of the disease in humans.
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Affiliation(s)
- Guilherme Silva Miranda
- Laboratory of Immunohelminthology and Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil.,Laboratory of Biology, Department of Biology, Institute of Education, Science and Technology of Maranhão, São Raimundo das Mangabeiras, Brazil
| | - Samira Diniz Resende
- Laboratory of Immunohelminthology and Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Diogo Tavares Cardoso
- Laboratory of Intestinal Helminthiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Genil Mororó Araújo Camelo
- Laboratory of Immunohelminthology and Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Jeferson Kelvin Alves Oliveira Silva
- Laboratory of Immunohelminthology and Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Vanessa Normandio de Castro
- Laboratory of Intestinal Helminthiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Stefan Michael Geiger
- Laboratory of Intestinal Helminthiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Mariângela Carneiro
- Laboratory of Epidemiology of Infectious and Parasitic Diseases, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Deborah Negrão-Corrêa
- Laboratory of Immunohelminthology and Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
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Antischistosomal Activity of Zingiber officinale, Piper nigrum, and Coriandrum sativum Aqueous Plant Extracts on Hamster Infected with Schistosoma mansoni. J Parasitol Res 2021. [DOI: 10.1155/2021/6628787] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Schistosomiasis continues to affect the health and quality of life of millions of people around the world. Schistosomiasis has been ranked the second disease after malaria in terms of importance as a targeted tropical disease. Praziquantel (PZQ) is the only drug approved by the World Health Organization (WHO) for the treatment of schistosomiasis. Being the only drug, parasite resistance to this drug has developed. Therefore, the search for new alternatives has been the goal of many researchers. In this study, the effects of aqueous extracts of Zingiber officinale, Piper nigrum, and Coriandrum sativum on Schistosoma mansoni infected golden hamsters (Egyptian strain) were evaluated in vitro and in vivo at different doses of 500, 250, 125, 62.5, and 31.25 μg/ml. In vitro, adult worms of S. mansoni were tested in RPMI-1640 medium for 48 hrs. The results showed that the concentrations 500, 250, and 125 μg/ml of Zingiber officinale and Piper nigrum caused dead of 100% of adult worms within 6 and 12 hrs of incubation, respectively. Although, aqueous extract of Coriandrum sativum at concentrations 500, 250, and 125 μg/ml resulted dead of 100% parasites after 12 to 24 hrs of incubation. In conclusion, Zingiber officinale and Piper nigrum showed efficacy against schistosomiasis in both in vitro and biological experiments of Egyptian schistosome strain, while Coriandrum sativum gave less effective results than the previous ones. Therefore, Zingiber officinale and Piper nigrum may become an innovative treatment for schistosomiasis.
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Miranda VHS, Gomes TR, Eller DE, Ferraz LDCN, Chaves AT, Bicalho KA, Silva CEC, Birbrair A, Pascoal Xavier MA, de Goes AM, Corrêa-Oliveira R, Alves ÉAR, Bozzi A. Liver damage in schistosomiasis is reduced by adipose tissue-derived stem cell therapy after praziquantel treatment. PLoS Negl Trop Dis 2020; 14:e0008635. [PMID: 32853206 PMCID: PMC7480869 DOI: 10.1371/journal.pntd.0008635] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 09/09/2020] [Accepted: 07/23/2020] [Indexed: 12/19/2022] Open
Abstract
Background In view of the potential immunosuppressive and regenerative properties of mesenchymal stem cells (MSC), we investigated whether transplantation of adipose tissue-derived stem cells (ASC) could be used to control the granulomatous reaction in the liver of mice infected with Schistosoma mansoni after Praziquantel (PZQ) treatment. Methodology/Prinicpal findings C57BL/6 mice infected with S. mansoni were treated with PZQ and transplanted intravenously with ASC from uninfected mice. Liver morpho-physiological and immunological analyses were performed. The combined PZQ/ASC therapy significantly reduced the volume of hepatic granulomas, as well as liver damage as measured by ALT levels. We also observed that ASC accelerated the progression of the granulomatous inflammation to the advanced/curative phase. The faster healing interfered with the expression of CD28 and CTLA-4 molecules in CD4+ T lymphocytes, and the levels of IL-10 and IL-17 cytokines, mainly in the livers of PZQ/ASC-treated mice. Conclusions Our results show that ASC therapy after PZQ treatment results in smaller granulomas with little tissue damage, suggesting the potential of ASC for the development of novel therapeutic approaches to minimize hepatic lesions as well as a granulomatous reaction following S. mansoni infection. Further studies using the chronic model of schistosomiasis are required to corroborate the therapeutic use of ASC for schistosomiasis. Schistosomiasis is the second most prevalent parasitic disease in the world and is caused by the Schistosoma trematode. This disease is characterized by a granulomatous reaction around parasite eggs trapped in the tissues. The liver is one of the most affected organs and can develop severe fibrosis. Praziquantel (PZQ) is the treatment for schistosomiasis and kills the adult the worm; however, inflammation still persists around the eggs in the tissues. Mesenchymal stem cells (MSC) have been extensively studied as an alternative therapy to repair tissues and to stop inflammation due to their potential to differentiate in several cells types (bone, cartilage, fat, tendon, muscle, and marrow stroma), and to interfere with immune responses. This scenario has motivated the authors to investigate the use of MSC extract from adipose tissue (ASC) associated with PZQ to treat schistosomiasis. Briefly, mice were treated with PZQ followed by ASC injection showing significant reduction of the granulomas and normal levels of the enzyme alanine aminotransferase, an indicator of liver damage. These results suggest that ASC has the potential to be used as a novel therapeutic approach to control inflammation following infection by S. mansoni or liver disorders. Although the findings are promising, further studies using the chronic model of schistosomiasis are required to confirm using ASC for schistosomiasis therapy.
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Affiliation(s)
| | - Talita Rocha Gomes
- Instituto René Rachou, Fiocruz Minas, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Morfologia, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | | | | | | | | | | | - Alexander Birbrair
- Departamento de Patologia, ICB, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - Marcelo Antônio Pascoal Xavier
- Instituto René Rachou, Fiocruz Minas, Belo Horizonte, Minas Gerais, Brazil
- Faculdade de Medicina, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | | | | | | | - Adriana Bozzi
- Instituto René Rachou, Fiocruz Minas, Belo Horizonte, Minas Gerais, Brazil
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil
- * E-mail:
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da Silva Filomeno CE, Costa-Silva M, Corrêa CL, Neves RH, Mandarim-de-Lacerda CA, Machado-Silva JR. The acute schistosomiasis mansoni ameliorates metabolic syndrome in the C57BL/6 mouse model. Exp Parasitol 2020; 212:107889. [PMID: 32222527 DOI: 10.1016/j.exppara.2020.107889] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 03/17/2020] [Accepted: 03/22/2020] [Indexed: 02/07/2023]
Abstract
Human and experimental studies have shown that chronic schistosomiasis mansoni protects against metabolic disorders through direct and indirect pathways. This study aims to investigate the co-morbidity between the acute schistosomiasis and nonalcoholic fatty liver. To address this, male C57BL/6 mice fed a high-fat chow (60% fat) or standard chow (10% fat) for 13 weeks and later infected with 80 Schistosoma mansoni cercariae. Mice were assigned into four groups: uninfected fed standard (USC), uninfected fed high-fat chow (UHFC), infected fed standard (ISC), and infected fed high-fat chow (IHFC). Blood sample and tissues were obtained at nine weeks post-infection (acute schistosomiasis) by necropsy. UHFC mice showed higher body mass, visceral adiposity, impaired glucose tolerance, total cholesterol (TC), low-density lipoprotein cholesterol (LDL-c), triglyceride (TG), and liver steatosis compared to USC mice. IHFC mice showed lower blood lipid levels, blood glucose, improved glucose tolerance, body mass, and liver steatosis (macro and microvesicular) compared to UHFC mice. IHFC showed more massive histopathological changes (sinusoidal fibrosis, hepatocellular ballooning, and inflammatory infiltrates) compared to ISC. In conclusion, the co-morbidity results in both beneficial (friend) and detrimental (foe) for the host. While the acute schistosomiasis improves some metabolic features of metabolic syndrome, comorbidity worsens the liver injury.
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Affiliation(s)
- Carlos Eduardo da Silva Filomeno
- Department of Microbiology, Immunology and Parasitology, Faculty of Medical Sciences, Biomedical Center, The University of the State of Rio de Janeiro, Brazil
| | - Michele Costa-Silva
- Department of Microbiology, Immunology and Parasitology, Faculty of Medical Sciences, Biomedical Center, The University of the State of Rio de Janeiro, Brazil; Faculty of Medicine, Estácio de Sá University, Rio de Janeiro, Brazil
| | - Christiane Leal Corrêa
- Department of Pathology and Laboratories, Faculty of Medical Sciences, Biomedical Center, The University of the State of Rio de Janeiro, Brazil; Faculty of Medicine, Estácio de Sá University, Rio de Janeiro, Brazil
| | - Renata Heisler Neves
- Department of Microbiology, Immunology and Parasitology, Faculty of Medical Sciences, Biomedical Center, The University of the State of Rio de Janeiro, Brazil
| | - Carlos Alberto Mandarim-de-Lacerda
- Laboratory of Morphometry, Metabolism and Cardiovascular Diseases, Institute of Biology Roberto Alcantara Gomes, Biomedical Center, The University of the State of Rio de Janeiro, Brazil
| | - José Roberto Machado-Silva
- Department of Microbiology, Immunology and Parasitology, Faculty of Medical Sciences, Biomedical Center, The University of the State of Rio de Janeiro, Brazil.
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Melo RCN, Raas MWD, Palazzi C, Neves VH, Malta KK, Silva TP. Whole Slide Imaging and Its Applications to Histopathological Studies of Liver Disorders. Front Med (Lausanne) 2020; 6:310. [PMID: 31970160 PMCID: PMC6960181 DOI: 10.3389/fmed.2019.00310] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Accepted: 12/09/2019] [Indexed: 12/11/2022] Open
Abstract
Histological analysis of hepatic tissue specimens is essential for evaluating the pathology of several liver disorders such as chronic liver diseases, hepatocellular carcinomas, liver steatosis, and infectious liver diseases. Manual examination of histological slides on the microscope is a classically used method to study these disorders. However, it is considered time-consuming, limited, and associated with intra- and inter-observer variability. Emerging technologies such as whole slide imaging (WSI), also termed virtual microscopy, have increasingly been used to improve the assessment of histological features with applications in both clinical and research laboratories. WSI enables the acquisition of the tissue morphology/pathology from glass slides and translates it into a digital form comparable to a conventional microscope, but with several advantages such as easy image accessibility and storage, portability, sharing, annotation, qualitative and quantitative image analysis, and use for educational purposes. WSI-generated images simultaneously provide high resolution and a wide field of observation that can cover the entire section, extending any single field of view. In this review, we summarize current knowledge on the application of WSI to histopathological analyses of liver disorders as well as to understand liver biology. We address how WSI may improve the assessment and quantification of multiple histological parameters in the liver, and help diagnose several hepatic conditions with important clinical implications. The WSI technical limitations are also discussed.
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Affiliation(s)
- Rossana C N Melo
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Maximilian W D Raas
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil.,Faculty of Medical Sciences, Radboud University, Nijmegen, Netherlands
| | - Cinthia Palazzi
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Vitor H Neves
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Kássia K Malta
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Thiago P Silva
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
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Lin MH, Lee KM, Hsu CY, Peng SY, Lin CN, Chen CC, Fan CK, Cheng PC. Immunopathological effects of Agaricus blazei Murill polysaccharides against Schistosoma mansoni infection by Th1 and NK1 cells differentiation. Int Immunopharmacol 2019; 73:502-514. [DOI: 10.1016/j.intimp.2019.05.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 01/24/2019] [Accepted: 05/14/2019] [Indexed: 11/27/2022]
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Dias FF, Amaral KB, Malta KK, Silva TP, Rodrigues GSC, Rosa FM, Rodrigues GOL, Costa VV, Chiarini-Garcia H, Weller PF, Melo RCN. Identification of Piecemeal Degranulation and Vesicular Transport of MBP-1 in Liver-Infiltrating Mouse Eosinophils During Acute Experimental Schistosoma mansoni Infection. Front Immunol 2018; 9:3019. [PMID: 30619361 PMCID: PMC6306457 DOI: 10.3389/fimmu.2018.03019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 12/06/2018] [Indexed: 12/11/2022] Open
Abstract
Eosinophils have been long associated with helminthic infections, although their functions in these diseases remain unclear. During schistosomiasis caused by the trematode Schistosoma mansoni, eosinophils are specifically recruited and migrate to sites of granulomatous responses where they degranulate. However, little is known about the mechanisms of eosinophil secretion during this disease. Here, we investigated the degranulation patterns, including the cellular mechanisms of major basic protein-1 (MBP-1) release, from inflammatory eosinophils in a mouse model of S. mansoni infection (acute phase). Fragments of the liver, a major target organ of this disease, were processed for histologic analyses (whole slide imaging), conventional transmission electron microscopy (TEM), and immunonanogold EM using a pre-embedding approach for precise localization of major basic protein 1 (MBP-1), a typical cationic protein stored pre-synthesized in eosinophil secretory (specific) granules. A well-characterized granulomatous inflammatory response with a high number of infiltrating eosinophils surrounding S. mansoni eggs was observed in the livers of infected mice. Moreover, significant elevations in the levels of plasma Th2 cytokines (IL-4, IL-13, and IL-10) and serum enzymes (alanine aminotransferase and aspartate aminotransferase) reflecting altered liver function were detected in response to the infection. TEM quantitative analyses revealed that while 19.1% of eosinophils were intact, most of them showed distinct degranulation processes: cytolysis (13.0%), classical and/or compound exocytosis identified by granule fusions (1.5%), and mainly piecemeal degranulation (PMD) (66.4%), which is mediated by vesicular trafficking. Immunonanogold EM showed a consistent labeling for MBP-1 associated with secretory granules. Most MBP-1-positive granules had PMD features (79.0 ± 4.8%). MBP-1 was also present extracellularly and on vesicles distributed in the cytoplasm and attached to/surrounding the surface of emptying granules. Our data demonstrated that liver-infiltrating mouse eosinophils are able to degranulate through different secretory processes during acute experimental S. mansoni infections with PMD being the predominant mechanism of eosinophil secretion. This means that a selective secretion of MBP-1 is occurring. Moreover, our study demonstrates, for the first time, a vesicular trafficking of MBP-1 within mouse eosinophils elicited by a helminth infection. Vesicle-mediated secretion of MBP-1 may be relevant for the rapid release of small concentrations of MBP-1 under cell activation.
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Affiliation(s)
- Felipe F Dias
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Kátia B Amaral
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Kássia K Malta
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Thiago P Silva
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Gabriel S C Rodrigues
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Florence M Rosa
- Laboratory of Parasitology, Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Gisele O L Rodrigues
- Laboratory of Immunopharmacology, Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Vivian V Costa
- Center for Drug Research and Development of Pharmaceuticals, Federal University of Minas Gerais, Belo Horizonte, Brazil.,Research Group in Arboviral Diseases, Department of Morphology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Hélio Chiarini-Garcia
- Laboratory of Reproduction and Structural Biology, Department of Morphology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Peter F Weller
- Division of Allergy and Inflammation, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School Boston, Boston, MA, United States
| | - Rossana C N Melo
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora, Juiz de Fora, Brazil.,Division of Allergy and Inflammation, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School Boston, Boston, MA, United States
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Jatsa HB, Femoe UM, Njiaza J, Tombe Tombe DS, Mbolang LN, Nkondo ET, Tchuente LAT, Dimo T, Kamtchouing P. Efficacy of Sida pilosa Retz aqueous extract against Schistosoma mansoni - induced granulomatous inflammation in the liver and the intestine of mice: histomorphometry and gastrointestinal motility evaluation. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 18:247. [PMID: 30189873 PMCID: PMC6127922 DOI: 10.1186/s12906-018-2318-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 08/30/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND The macerate of Sida pilosa aerial parts is used empirically for the treatment of intestinal helminthiasis. Previous studies have shown that Sida pilosa aqueous extract (SpAE) has schistosomicidal, antioxidant, anti-inflammatory and anti-fibrotic activities in Schistosoma mansoni infection. This study was designed to evaluate the effect of SpAE on the granulomatous inflammation induced by S. mansoni in the liver and the intestine of mice by histomorphometry; as well as on the gastrointestinal motility. METHODS To study the effect of SpAE on the liver and intestine histomorphometry and on the gastrointestinal motility, SpAE was administered at 200 mg/kg per os to S. mansoni-infected mice for 4 weeks. Praziquantel was used as reference drug. Prior to carrying out sacrifice, a batch of mice was subjected to gastrointestinal transit evaluation with 3% charcoal meal. After sacrifying another batch of mice, we performed histological and morphometric analyses of the liver and the ileum. We measured the following: total proteins, transaminases, malondialdehyde, nitrites, superoxide dismutase, catalase and reduced glutathione. The effect of SpAE (4, 8, 16 and 32 mg/mL) on the ileum contractile activity was evaluated either in the absence or in the presence of pharmacological blockers. RESULTS SpAE induced a significant reduction of hepatosplenomegaly and intestine enlargement. The number of granulomas was reduced by 52.82% in the liver and 52.79% in the intestine, whereas the volume of hepatic granulomas decreased by 48.76% after SpAE treatment. SpAE also reduced (p < 0.001) the ileal muscular layer thickness. The levels of total proteins, transaminases, malondialdehyde, nitrites, superoxide dismutase, catalase and reduced glutathione were restored after treatment of infected mice with SpAE. A normalization of the gastrointestinal transit was also recorded after SpAE treatment. The effect of SpAE on intestinal motility was mediated via intracellular and extracellular calcium mobilization. CONCLUSION Our findings provide evidence that SpAE improves granulomatous inflammation induced by S. mansoni both in the liver and in the intestine, as well as it re-establishes normal gastrointestinal transit. SpAE may be used for the development of alternative medicine against S. mansoni infection.
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Affiliation(s)
- Hermine Boukeng Jatsa
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
- Centre for Schistosomiasis and Parasitology, P.O. Box 7244, Yaoundé, Cameroon
| | - Ulrich Membe Femoe
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
- Centre for Schistosomiasis and Parasitology, P.O. Box 7244, Yaoundé, Cameroon
| | - Joseph Njiaza
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Daniel Simplice Tombe Tombe
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Lohik Nguegan Mbolang
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Emilienne Tienga Nkondo
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
- Centre for Schistosomiasis and Parasitology, P.O. Box 7244, Yaoundé, Cameroon
| | - Louis-Albert Tchuem Tchuente
- Laboratory of Animal Biology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
- Centre for Schistosomiasis and Parasitology, P.O. Box 7244, Yaoundé, Cameroon
| | - Théophile Dimo
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Pierre Kamtchouing
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
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Marconato DG, Gusmão MADN, Melo J, Castro JMDA, Macedo GC, Vasconcelos EG, Faria-Pinto P. Antischistosome antibodies change NTPDase 1 activity from macrophages. Parasite Immunol 2017; 39. [DOI: 10.1111/pim.12487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 08/25/2017] [Indexed: 11/30/2022]
Affiliation(s)
- D. G. Marconato
- Department of Biochemistry; Institute of Biological Sciences; Federal University of Juiz de Fora; Juiz de Fora MG Brazil
| | - M. A. do N. Gusmão
- Department of Biochemistry; Institute of Biological Sciences; Federal University of Juiz de Fora; Juiz de Fora MG Brazil
| | - J. Melo
- Department of Immunology, Parasitology and Microbiology; Institute of Biological Sciences; Federal University of Juiz de Fora; Juiz de Fora MG Brazil
| | - J. M. de A. Castro
- Department of Immunology, Parasitology and Microbiology; Institute of Biological Sciences; Federal University of Juiz de Fora; Juiz de Fora MG Brazil
| | - G. C. Macedo
- Department of Immunology, Parasitology and Microbiology; Institute of Biological Sciences; Federal University of Juiz de Fora; Juiz de Fora MG Brazil
| | - E. G. Vasconcelos
- Department of Biochemistry; Institute of Biological Sciences; Federal University of Juiz de Fora; Juiz de Fora MG Brazil
| | - P. Faria-Pinto
- Department of Biochemistry; Institute of Biological Sciences; Federal University of Juiz de Fora; Juiz de Fora MG Brazil
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Amaral KB, Silva TP, Dias FF, Malta KK, Rosa FM, Costa-Neto SF, Gentile R, Melo RCN. Histological assessment of granulomas in natural and experimental Schistosoma mansoni infections using whole slide imaging. PLoS One 2017; 12:e0184696. [PMID: 28902908 PMCID: PMC5597217 DOI: 10.1371/journal.pone.0184696] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/29/2017] [Indexed: 01/21/2023] Open
Abstract
The pathology of schistosomiasis mansoni, a neglected tropical disease of great clinical and socioeconomic importance, results from the parasite eggs that become trapped in host tissues, particularly in the liver and intestines. Continuous antigenic stimulation from these eggs leads to recruitment of inflammatory cells to the sites of infection with formation of periovular granulomas. These complex structures have variable size and composition and are the most striking histopathological feature of schistosomiasis mansoni. However, evaluation of granulomas by conventional microscopy methods is time-consuming and limited, especially in large-scale studies. Here, we used high resolution Whole Slide Imaging (WSI), which allows fast scanning of entire histological slides, and multiple morphometric evaluations, to assess the granulomatous response elicited in target organs (liver, small and large intestines) of two models of schistosomiasis mansoni. One of the advantages of WSI, also termed virtual microscopy, is that it generates images that simultaneously offer high resolution and a wide field of observation. By using a model of natural (Nectomys squamipes, a wild reservoir captured from endemic areas in Brazil) and experimental (Swiss mouse) infection with Schistosoma mansoni, we provided the first detailed WSI characterization of granulomas and other pathological aspects. WSI and quantitative analyses enabled a fast and reliable assessment of the number, evolutional types, frequency and areas of granulomas and inflammatory infiltrates and revealed that target organs are differentially impacted by inflammatory responses in the natural and experimental infections. Remarkably, high-resolution analysis of individual eosinophils, key cells elicited by this helminthic infection, showed a great difference in eosinophil numbers between the two infections. Moreover, features such as the intestinal egg path and confluent granulomas were uncovered. Thus, WSI may be a suitable tool for detailed and precise histological analysis of granulomas and other pathological aspects for clinical and research studies of schistosomiasis.
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Affiliation(s)
- Kátia B. Amaral
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil
| | - Thiago P. Silva
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil
| | - Felipe F. Dias
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil
| | - Kássia K. Malta
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil
| | - Florence M. Rosa
- Laboratory of Parasitology, Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil
| | - Sócrates F. Costa-Neto
- Laboratory of Biology and Parasitology of Wild Reservoir Mammals, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Rosana Gentile
- Laboratory of Biology and Parasitology of Wild Reservoir Mammals, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Rossana C. N. Melo
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil
- * E-mail:
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da Paz VRF, Sequeira D, Pyrrho A. Infection by Schistosoma mansoni during pregnancy: Effects on offspring immunity. Life Sci 2017; 185:46-52. [PMID: 28754617 DOI: 10.1016/j.lfs.2017.07.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 07/16/2017] [Accepted: 07/20/2017] [Indexed: 11/26/2022]
Abstract
About 25 million Brazilians live in areas at risk of contracting the disease caused by the trematoda Schistosoma mansoni, the schistosomiasis mansoni. Although the adult parasites inhabit the blood vessels, probably the main element responsible for the pathology of the disease are the eggs, whose deposition in the liver results in formation of granulomas and hypersensitivity mediated by CD4 T cells. In the course of infection, the profile of T helper 1 (Th1) and Th2 cytokines released by immune cells is correlated with the extent of inflammation in the granuloma and with the disease severity. While a Th1 immune response favors the local inflammation and the disease progression, the Th2 immune response has protective character. Also during pregnancy, it is essential a fine adjustment of a Th1/Th2 in the maternal-fetal interface, which ensures the pregnancy progress with peculiar immune characteristics. In particular, the maternal exposure to antigens has been associated with their presence in fetal circulation. The exposure to intrauterine antigens can imply an immune tolerance of the fetus to such components. In turn, the transfer of antigens and antibodies from mother to offspring during breastfeeding is an important stage of maturation and capacitation of immune offspring in future infections against pathogens. This review aims to gather bibliographic data to assist in the understanding of immunological features printed on offspring of mothers infected with S. mansoni, which affect latter immune responses to related or unrelated antigens.
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Affiliation(s)
| | - Danielly Sequeira
- Laboratory of Immunoparasitology, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.; Laboratory of Taxonomy, Biochemistry and Fungi Bioprospecting, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.
| | - Alexandre Pyrrho
- Clinical and Toxicological Analysis Department, Pharmacy College, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
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Rodrigues JPF, Caldas IS, Gonçalves RV, Almeida LA, Souza RLM, Novaes RD. S. mansoni-T. cruzi co-infection modulates arginase-1/iNOS expression, liver and heart disease in mice. Nitric Oxide 2017; 66:43-52. [PMID: 28268114 DOI: 10.1016/j.niox.2017.02.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 02/17/2017] [Accepted: 02/27/2017] [Indexed: 12/30/2022]
Abstract
Although Schistosoma species and Trypanosoma cruzi share common endemic areas, co-infections by these parasites remains overlooked. By using a murine model of S. mansoni and T. cruzi co-infection, we investigated if and to what extent these infections might interact to change the pathological outcomes typically observed when the host is infected by a single parasite species. Swiss mice were randomized into four groups: uninfected (NI) and those infected by S. mansoni (SM), T. cruzi (TC) or co-infected (SM + TC). After 120 days of S. mansoni infection, T. cruzi was concurrently inoculated and the infection occurred for 30 days. Taken together, we identified that the overlap of Th2 (schistosomiasis) and Th1 (Chagas disease) immunological patterns changes the host resistance against both pathogens. Beyond impairing the control of granulomatous inflammation, T. cruzi parasitemia and parasitism in co-infected animals, the Th2 inflammatory response against S. mansoni elicits the activation of the arginase-1 pathway to the detriment of inducible oxide nitric synthase (iNOS) expression and nitric oxide (NO) production, contributing to the liver damage, with minor effects on heart pathology.
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Affiliation(s)
| | - Ivo Santana Caldas
- Department of Pathology and Parasitology, Federal University of Alfenas, Alfenas, Minas Gerais, 37130-000, Brazil
| | | | - Leonardo Augusto Almeida
- Department of Microbiology and Immunology, Federal University of Alfenas, Alfenas, Minas Gerais, 37130-000, Brazil
| | - Raquel Lopes Martins Souza
- Department of Pathology and Parasitology, Federal University of Alfenas, Alfenas, Minas Gerais, 37130-000, Brazil
| | - Rômulo Dias Novaes
- Department of Structural Biology, Federal University of Alfenas, Alfenas, Minas Gerais, 37130-000, Brazil.
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IFN-gamma role in granuloma formation in experimental subcutaneous cysticercosis. Exp Parasitol 2016; 168:1-8. [DOI: 10.1016/j.exppara.2016.06.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Revised: 05/25/2016] [Accepted: 06/15/2016] [Indexed: 11/19/2022]
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Jatsa HB, Russo RC, Pereira CADJ, Aguilar EC, Garcia CC, Araújo ES, Oliveira JLR, Rodrigues VF, de Oliveira VG, Alvarez-Leite JI, Braga FC, Kamtchouing P, Negrão-Corrêa DA, Teixeira MM. Improvement of the liver pathology by the aqueous extract and the n-butanol fraction of Sida pilosa Retz in Schistosoma mansoni-infected mice. JOURNAL OF ETHNOPHARMACOLOGY 2016; 180:114-123. [PMID: 26806570 DOI: 10.1016/j.jep.2016.01.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 12/29/2015] [Accepted: 01/18/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sida pilosa Retz (Malvaceae) is a plant used in Africa for the treatment of intestinal helminthiasis, lower abdominal pains and dysmenorrhea. AIM OF THE STUDY In order to determine the potential use of S. pilosa in the treatment of schistosomiasis mansoni, we evaluated the schistosomicidal, antioxidant and anti-fibrotic properties of the aqueous extract and the n-butanol fraction of its aerial parts. MATERIAL AND METHODS S. pilosa aqueous extract (SpAE) at 100, 200 and 400mg/kg and n-butanol fraction (SpBF) at 50, 100 and 200mg/kg were administered per os to Schistosoma mansoni-infected mice for 4 weeks. Praziquantel (100mg/kg × 5 days) was used as reference drug. After sacrifice, worm burden and egg count, transaminases and proteins levels were evaluated. Malondialdehyde (MDA), lipid hydroperoxydes (LOOH), catalase (CAT), superoxide dismutase (SOD), eosinophil peroxidase (EPO) and myeloperoxidase (MPO) were also measured. The anti-fibrotic effect of the plant was evaluated by the determination of hydroxyproline and γ-interferon (IFN-γ). RESULTS The treatment of S. mansoni-infected mice by SpAE or SpBF resulted in a moderate reduction of worm burden and egg load in the liver and intestine. Both SpAE and SpBF significantly reversed the increasing liver proteins, MDA, LOOH and CAT levels induced by the infection. Moreover, SOD activity was improved by SpAE and SpBF. Schistosomiasis mansoni considerably increased the EPO (p<0.001) and MPO activities (p<0.001). SpAE treatment significantly reduced EPO and MPO activities at all doses. SpBF failed to reduce the increasing MPO and decreased EPO only at the highest dose. S. mansoni-infection induced an increase in hydroxyproline content (p<0.001) and a decrease in IFN-γ level (p<0.001). Both SpAE and SpBF significantly reduced hepatic hydroxyproline content, while only SpAE (p<0.05) improved IFN-γ level. CONCLUSION These results suggest that the liver pathology in schistosomiasis mansoni is improved by S. pilosa aqueous extract, which disclosed a moderate schistosomicidal, but strong antioxidant and anti-fibrotic activities. The n-butanol fraction was however less active than the aqueous extract.
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Affiliation(s)
- Hermine Boukeng Jatsa
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon; Laboratory of Immunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil; Laboratory of Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil; Laboratory of Arterosclerosis and Nutritional Biochemistry, Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Remo Castro Russo
- Laboratory of Immunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil; Laboratory of Pulmonary Immunology and Mechanics, Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Cintia Aparecida de Jesus Pereira
- Laboratory of Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Edenil Costa Aguilar
- Laboratory of Arterosclerosis and Nutritional Biochemistry, Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Cristiana Couto Garcia
- Laboratory of Immunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Emília Souza Araújo
- Laboratory of Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Jailza Lima Rodrigues Oliveira
- Laboratory of Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Vanessa Fernandes Rodrigues
- Laboratory of Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Vinícius Gustavo de Oliveira
- Laboratory of Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Jacqueline Isaura Alvarez-Leite
- Laboratory of Arterosclerosis and Nutritional Biochemistry, Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Fernão Castro Braga
- Laboratory of Phytochemistry, Department of Pharmaceutical Products, Faculty of Pharmacy, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Pierre Kamtchouing
- Laboratory of Animal Physiology, Department of Animal Biology and Physiology, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon.
| | - Deborah Aparecida Negrão-Corrêa
- Laboratory of Schistosomiasis, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
| | - Mauro Martins Teixeira
- Laboratory of Immunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 2267, Belo Horizonte, Brazil.
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Cheng PC, Lin CN, Peng SY, Kang TF, Lee KM. Combined IL-12 Plasmid and Recombinant SjGST Enhance the Protective and Anti-pathology Effect of SjGST DNA Vaccine Against Schistosoma japonicum. PLoS Negl Trop Dis 2016; 10:e0004459. [PMID: 26891172 PMCID: PMC4758724 DOI: 10.1371/journal.pntd.0004459] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 01/23/2016] [Indexed: 01/10/2023] Open
Abstract
Schistosomiasis is listed as one of most important tropical diseases and more than 200 million people are estimated to be infected. Development of a vaccine is thought to be the most effective way to control this disease. Recombinant 26-kDa glutathione S-transferase (rSjGST) has previously been reported to achieve a worm reduction rate of 42-44%. To improve the efficiency of the vaccine against Schistosoma japonicum, we immunized mice with a combination of pcDNA vector-encoded 26-kDa SjGST (pcDNA/SjGST), IL-12 expressing-plasmid (pIL-12), and rSjGST. Co-vaccination with pcDNA/SjGST, pIL-12, and rSjGST led to a reduction in worm burden, hepatic egg burden, and the size of liver tissue granulomas than that in the untreated infection controls. In addition, we detected high levels of specific IgG, IgG1, and IgG2a against the rSjGST antigen in infected mice vaccinated with this combination of pcDNA/SjGST, pIL-12, and rSjGST. Moreover, high expression levels of Th2 cytokines, including IL-4 and IL-10, were also detected in this group, without diminished levels of IL-12, INF-γ, and TNF-α cytokines that are related to parasite killing. In conclusion, we have developed a new vaccination regimen against S. japonicum infection and shown that co-immunization with pcDNA/SjGST vaccine, pIL-12, and rSjGST has significant anti-parasite, anti-hepatic egg and anti-pathology effects in mice. The efficacy of this vaccination method should be further validated in large animals such as water buffalo. This method may help to reduce the transmission of zoonotic schistosomiasis japonica.
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Affiliation(s)
- Po-Ching Cheng
- Department of Molecular Parasitology and Tropical Diseases, School of Medicine, Taipei Medical University, Taipei, Taiwan
- * E-mail: (PCC); (KML)
| | - Ching-Nan Lin
- Institute of Microbiology and Immunology, National Yang-Mng University, Taipei, Taiwan
- Institute of Tropical Medicine, National Yang-Mng University, Taipei, Taiwan
| | - Shih-Yi Peng
- Department of Biochemistry, College of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Tsung-Fu Kang
- Institute of Tropical Medicine, National Yang-Mng University, Taipei, Taiwan
| | - Kin-Mu Lee
- Institute of Biotechnology, Central Taiwan University of Science and Technology, Taichung, Taiwan
- * E-mail: (PCC); (KML)
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Guimarães MA, de Oliveira RN, Véras LMC, Lima DF, Campelo YDM, Campos SA, Kuckelhaus SAS, Pinto PLS, Eaton P, Mafud AC, Mascarenhas YP, Allegretti SM, de Moraes J, Lolić A, Verbić T, Leite JRSA. Anthelmintic activity in vivo of epiisopiloturine against juvenile and adult worms of Schistosoma mansoni. PLoS Negl Trop Dis 2015; 9:e0003656. [PMID: 25816129 PMCID: PMC4376696 DOI: 10.1371/journal.pntd.0003656] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Accepted: 02/27/2015] [Indexed: 02/02/2023] Open
Abstract
Schistosomiasis is a serious disease currently estimated to affect more that 207 million people worldwide. Due to the intensive use of praziquantel, there is increasing concern about the development of drug-resistant strains. Therefore, it is necessary to search for and investigate new potential schistosomicidal compounds. This work reports the in vivo effect of the alkaloid epiisopiloturine (EPI) against adults and juvenile worms of Schistosoma mansoni. EPI was first purified its thermal behavior and theoretical solubility parameters charaterised. In the experiment, mice were treated with EPI over the 21 days post-infection with the doses of 40 and 200 mg/kg, and 45 days post-infection with single doses of 40, 100 and 300 mg/kg. The treatment with EPI at 40 mg/kg was more effective in adult worms when compared with doses of 100 and 300 mg/kg. The treatment with 40 mg/kg in adult worms reduced parasite burden significantly, lead to reduction in hepatosplenomegaly, reduced the egg burden in faeces, and decreased granuloma diameter. Scanning electron microscopy revealed morphological changes to the parasite tegument after treatment, including the loss of important features. Additionally, the in vivo treatment against juvenile with 40 mg/kg showed a reduction of the total worm burden of 50.2%. Histopathological studies were performed on liver, spleen, lung, kidney and brain and EPI was shown to have a DL50 of 8000 mg/kg. Therefore EPI shows potential to be used in schistosomiasis treatment. This is the first time that schistosomicidal in vivo activity of EPI has been reported.
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Affiliation(s)
- Maria A. Guimarães
- Biotechnology and Biodiversity Center Research, BIOTEC, Federal University of Piauí, Parnaíba, Piauí, Brazil
| | - Rosimeire N. de Oliveira
- Department of Animal Biology, Institute of Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Leiz M. C. Véras
- Biotechnology and Biodiversity Center Research, BIOTEC, Federal University of Piauí, Parnaíba, Piauí, Brazil
- Graduate Program in Biotechnology, RENORBIO, Focal Point Federal University of Piauí, Teresina, Piauí, Brazil
| | - David F. Lima
- Biotechnology and Biodiversity Center Research, BIOTEC, Federal University of Piauí, Parnaíba, Piauí, Brazil
- Graduate Program in Biotechnology, RENORBIO, Focal Point Federal University of Piauí, Teresina, Piauí, Brazil
- Collegiate Academic Medicine, Federal University of São Francisco Valley, Campus Paulo Afonso, Paulo Afonso, Bahia, Brazil
| | - Yuri D. M. Campelo
- Biotechnology and Biodiversity Center Research, BIOTEC, Federal University of Piauí, Parnaíba, Piauí, Brazil
- Graduate Program in Biotechnology, RENORBIO, Focal Point Federal University of Piauí, Teresina, Piauí, Brazil
| | - Stefano Augusto Campos
- Biotechnology and Biodiversity Center Research, BIOTEC, Federal University of Piauí, Parnaíba, Piauí, Brazil
| | - Selma A. S. Kuckelhaus
- Faculty of Medicine, University of Brasilia, UNB Campus Dacy Ribeiro, Brasília, Distrito Federal, Brazil
| | | | - Peter Eaton
- UCIBIO, REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Portugal
| | - Ana C. Mafud
- Group of Crystallography, Institute of Physics of São Carlos, University of São Paulo, São Carlos, São Paulo, Brazil
| | - Yvonne P. Mascarenhas
- Group of Crystallography, Institute of Physics of São Carlos, University of São Paulo, São Carlos, São Paulo, Brazil
| | - Silmara M. Allegretti
- Department of Animal Biology, Institute of Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Josué de Moraes
- Research Center for Neglected Diseases (NPDN/FACIG), Guarulhos, São Paulo, Brazil
| | | | - Tatjana Verbić
- Faculty of Chemistry, University of Belgrade, Belgrade, Serbia
| | - José Roberto S. A. Leite
- Biotechnology and Biodiversity Center Research, BIOTEC, Federal University of Piauí, Parnaíba, Piauí, Brazil
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Chuah C, Jones MK, Burke ML, McManus DP, Gobert GN. Cellular and chemokine-mediated regulation in schistosome-induced hepatic pathology. Trends Parasitol 2014; 30:141-50. [PMID: 24433721 DOI: 10.1016/j.pt.2013.12.009] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 12/17/2013] [Accepted: 12/18/2013] [Indexed: 02/06/2023]
Abstract
In hepatic schistosomiasis, pathology arises when schistosome eggs become lodged in the host liver, evoking an interleukin 4 (IL-4)- and IL-13-mediated dominant CD4(+) Th2 immune response. This response leads to the development of granulomas and fibrosis, with eosinophils, neutrophils, macrophages, hepatic stellate cells, and lymphocytes all identified as major cellular contributors to these events. This review outlines the cellular and molecular mechanisms of hepatic schistosomiasis, with an emphasis on the major cellular components and their release of chemokines. The differences between Schistosoma mansoni- and Schistosoma japonicum-induced hepatic granuloma are also discussed. This comprehensive overview of the processes associated with hepatic schistosomiasis may provide new insights into improved treatment for both schistosomiasis and other granulofibrotic diseases.
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Affiliation(s)
- Candy Chuah
- Parasite Cell Biology Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, 4006, Australia; School of Veterinary Sciences, The University of Queensland, Gatton, 4343, Australia; School of Medical Sciences, Universiti Sains Malaysia, 16150, Kelantan, Malaysia
| | - Malcolm K Jones
- Parasite Cell Biology Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, 4006, Australia; School of Veterinary Sciences, The University of Queensland, Gatton, 4343, Australia
| | - Melissa L Burke
- Division of Mycobacterial Research, National Institute for Medical Research, London, NW7 1AA, UK
| | - Donald P McManus
- Molecular Parasitology Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, 4006, Australia
| | - Geoffrey N Gobert
- Molecular Parasitology Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, 4006, Australia.
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Sulbarán G, Noya O, Brito B, Ballén DE, Cesari IM. Immunoprotection of mice against Schistosomiasis mansoni using solubilized membrane antigens. PLoS Negl Trop Dis 2013; 7:e2254. [PMID: 23818994 PMCID: PMC3688544 DOI: 10.1371/journal.pntd.0002254] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 04/26/2013] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Schistosomiasis continues to be one of the most prevalent parasitic diseases in the world. Despite the existence of a highly effective antischistosome drug, the disease is spreading into new areas, and national control programs do not arrive to complete their tasks particularly in low endemic areas. The availability of a vaccine could represent an additional component to chemotherapy. Experimental vaccination studies are however necessary to identify parasite molecules that would serve as vaccine candidates. In the present work, C57BL/6 female mice were subcutaneously immunized with an n-butanol extract of the adult worm particulate membranous fraction (AWBE) and its protective effect against a S. mansoni challenge infection was evaluated. METHODOLOGY AND FINDINGS Water-saturated n-butanol release into the aqueous phase a set of membrane-associated (glyco)proteins that are variably recognized by antibodies in schistosome-infected patients; among the previously identified AWBE antigens there is Alkaline Phosphatase (SmAP) which has been associated with resistance to the infection in mice. As compared to control, a significantly lower number of perfuse parasites was obtained in the immunized/challenged mouse group (P<0.05, t test); and consequently, a lower number of eggs and granulomas (with reduced sizes), overall decreasing pathology. Immunized mice produced high levels of sera anti-AWBE IgG recognizing antigens of ∼190-, 130-, 98-, 47-, 28-23, 14-, and 9-kDa. The ∼130-kDa band (the AP dimer) exhibited in situ SmAP activity after addition of AP substrate and the activity was not apparently inhibited by host antibodies. A preliminary proteomic analysis of the 25-, 27-, and 28-kDa bands in the immunodominant 28-23 kDa region suggested that they are composed of actin. CONCLUSIONS Immunization with AWBE induced the production of specific antibodies to various adult worm membrane molecules (including AP) and a partial (43%) protection against a challenging S. mansoni infection by mechanism(s) that still has to be elucidated.
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Affiliation(s)
- Guidenn Sulbarán
- Unidad de Trematodiasis, Centro de Microbiología y Biología Celular, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Oscar Noya
- Sección de Biohelmintiasis, Instituto de Medicina Tropical, Facultad de Medicina, Universidad Central de Venezuela, Caracas, Venezuela
| | - Beatríz Brito
- Laboratorio de Patología Celular y Molecular, Centro de Medicina Experimental, Instituto de Investigaciones Científicas, Caracas, Venezuela
| | - Diana E. Ballén
- Unidad de Trematodiasis, Centro de Microbiología y Biología Celular, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
| | - Italo M. Cesari
- Unidad de Trematodiasis, Centro de Microbiología y Biología Celular, Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas, Venezuela
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Freitas A, Moura V, Gonçalves S, Rodrigues A, Félix R, Soares T, Irusta V, Vinaud M, Oliveira M, Lino-Junior R. Kinetics of the Inflammatory Response in Subcutaneous Cysticercosis Induced in Mice by Taenia crassiceps. J Comp Pathol 2012; 147:267-74. [DOI: 10.1016/j.jcpa.2011.12.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 11/16/2011] [Accepted: 12/21/2011] [Indexed: 10/14/2022]
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Changes in the small intestine ofSchistosoma mansoni-infected mice fed a high-fat diet. Parasitology 2012; 139:716-25. [DOI: 10.1017/s0031182011002307] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SUMMARYThe consumption of a high-fat diet modifies both the morphology of the small intestine and experimentally tested effects of schistosomiasis mansoni. However, whether a schistosomiasis infection associated with a high-fat diet causes injury to the small intestine has never been investigated. Mice were fed either a high-fat or a standard-fat diet for 6 months and were then infected withSchistosoma mansonicercariae. Physical characteristics of the intestinal tissue (mucosal thickness, small intestinal villi length and height, and abundance of goblet cells and enterocytes on the villous surface) and the distribution of granulomas along the intestinal segments and their developmental stage were measured at the time of sacrifice (9 or 17 weeks post-infection). The group fed a high-fat diet exhibited different granuloma stages, whereas the control group possessed only exudative granulomas. The chronically infected mice fed a high-fat diet exhibited higher granuloma and egg numbers than the acutely infected group. Exudative, exudative/exudative-productive and exudative-productive granulomas were present irrespective of diet. Computer-aided morphometric analysis confirmed that villus length, villus width, muscular height and submucosal height of the duodenal and jejunal segments were affected by diet and infection. In conclusion, a high-fat diet and infection had a significant impact on the small intestine morphology and morphometry among the animals tested.
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Mendes RGPR, Gusmão MADN, Maia ACRG, Detoni MDL, Porcino GN, Soares TV, Juliano MA, Juliano L, Coelho PMZ, Lenzi HL, Faria-Pinto P, Vasconcelos EG. Immunostimulatory property of a synthetic peptide belonging to the soluble ATP diphosphohydro-lase isoform (SmATPDase 2) and immunolocalisation of this protein in the Schistosoma mansoni egg. Mem Inst Oswaldo Cruz 2011; 106:808-13. [DOI: 10.1590/s0074-02762011000700005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Accepted: 05/06/2011] [Indexed: 11/21/2022] Open
Affiliation(s)
| | | | | | | | | | | | | | - Luiz Juliano
- Instituto de Pesquisas René Rachou-Fiocruz, Brasil
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Corrêa CL, Lisboa PC, Oliveira ED, Moura EGD, Oliveira RMFD, Gomes AC, Machado-Silva JR. The outcome of acute schistosomiasis infection in adult mice with postnatal exposure to maternal malnutrition. Mem Inst Oswaldo Cruz 2011; 106:584-93. [DOI: 10.1590/s0074-02762011000500011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2011] [Accepted: 05/24/2011] [Indexed: 11/22/2022] Open
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Mata-Santos HA, Lino FG, Rocha CC, Paiva CN, Castelo Branco MTL, Pyrrho ADS. Silymarin treatment reduces granuloma and hepatic fibrosis in experimental schistosomiasis. Parasitol Res 2010; 107:1429-34. [PMID: 20694562 DOI: 10.1007/s00436-010-2014-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Accepted: 07/23/2010] [Indexed: 02/07/2023]
Abstract
The schistosomiasis is a parasitic infection with relevant social impact and an important health problem in many countries around world. The pathology of this infection is characterized by a granulomatous reaction around parasite eggs and by hepatic fibrosis. Silymarin, a complex compound isolated from Silybum marianum (L.) Gaertner, have been described as hepatoprotective, antioxidant, antifibrotic, immunomodulator, and anti-neoplastic agent. Some of these capacities could potentially protect against pathology in schistosomiasis. Herein, we evaluated the effects of silymarin on parasite burden, granuloma sizes, and liver fibrosis, which are associated with severity and morbidity of this disease. BALB/c mice treated intraperitoneally with 10, 20, or 25 doses of silymarin (10 mg kg(-1)) suspended in carboxymethylcellulose were analyzed at 55 days post-infection. Silymarin (1) did not affect parasite oviposition capacity; (2) reduced granulomatous peri-ovular reaction in the liver, and (3) decreased hepatic fibrosis in this infection. Taken together, these data suggest that treatment with silymarin at acute phase of schistosomiasis may result in a mild course of murine schistosomiasis and can be a promising complementary treatment reverting sequelae of this infection.
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Affiliation(s)
- Hílton Antonio Mata-Santos
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro (UFRJ), CCS, Cidade Universitária, Rio de Janeiro, Rio de Janeiro, 21949-900, Brazil
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Marinho CC, Bretas T, Voieta I, Queiroz LCD, Ruiz-Guevara R, Teixeira AL, Antunes CM, Prata A, Lambertucci JR. Serum hyaluronan and collagen IV as non-invasive markers of liver fibrosis in patients from an endemic area for schistosomiasis mansoni: a field-based study in Brazil. Mem Inst Oswaldo Cruz 2010; 105:471-8. [DOI: 10.1590/s0074-02762010000400020] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Accepted: 09/04/2009] [Indexed: 12/27/2022] Open
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Lagochilascaris minor: Susceptibility and Resistance to Experimental Infection in Mice Is Independent of H-2 Haplotype and Correlates with the Immune Response in Immunized Animals. J Parasitol Res 2010; 2010. [PMID: 20721343 PMCID: PMC2915754 DOI: 10.1155/2010/610457] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Accepted: 05/10/2010] [Indexed: 11/18/2022] Open
Abstract
Recently, we demonstrated that C57BL/6 mice are more susceptible to experimental lagochilascariosis than BALB/c mice. To investigate the pattern of infection and the role of the genetic background on susceptibility to infection, we studied experimental lagochilascariosis in H-2a identical B10.A and A/J mice. Infected B10.A mice had a lower survival ratio and more severe lesions in the lungs than did A/J mice. Splenocytes of A/J mice immunized with the crude extract of the parasite showed increased proliferation and produced a higher level of interleukin 10 and interferon-γ in the presence of CE or concanavalin A when compared to B10.A mice. This suggests that resistance of A/J mice may be due to less severe lesions in lungs and other organs and a better immune response to parasite antigens. This paper provides evidence that major histocompatibility complex haplotype does not influence the survival to experimental infection with L. minor.
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Conceição MJ, Lenzi HL, Coura JR. Human study and experimental behavior of Schistosoma mansoni isolates from patients with different clinical forms of schistosomiasis. Acta Trop 2008; 108:98-103. [PMID: 18582844 DOI: 10.1016/j.actatropica.2008.05.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2007] [Revised: 05/03/2008] [Accepted: 05/13/2008] [Indexed: 11/18/2022]
Abstract
Twenty Schistosoma mansoni strains were isolated from three groups of patients (intestinal, hepatointestinal and hepatosplenic clinical forms) born and living in the town of Capitão Andrade, Minas Gerais, Brazil. Schistosomal isolate from each group was inoculated into three sets of mice with 25, 50 and 100 cercariae. The animals were killed 90 and 180 days after infection and submitted to extensive histopathological study of the liver, lung, intestine and spleen to determine qualitative and quantitative morphological characteristics, mainly of the granulomas. The histopathological changes caused the same patterns of infection in mice and were proportional to the inoculum and the time of infection, confirming the relevance of quantitative aspects in the determination of the disease. These data indicate three possibilities: (1) mouse model is not adequate to predict possible differences in the S. mansoni isolates obtained from patients; (2) field isolates are probably genetic polymorphic and undifferentiated; (3) schistosomiasis in human does not depend on parasite intrinsic factors, but on multivariable factors, such as intensity and duration of infection, time of infection, age and gender and other characteristics such as host response.
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Affiliation(s)
- Maria José Conceição
- Department of Preventive Medicine, Infectious and Parasitic Diseases Post-Graduation, Clementino Fraga Filho Hospital, Universidade Federal do Rio de Janeiro, UFRJ, Rio de Janeiro, Brazil.
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Lins RAB, Cavalcanti CBDL, Araújo-Filho JLS, Melo-Júnior MRD, Chaves MEC. A distribuição dos eosinófilos nas diferentes fases de evolução do granuloma hepático em camundongos infectados pelo Schistosoma mansoni. Rev Soc Bras Med Trop 2008; 41:173-8. [DOI: 10.1590/s0037-86822008000200008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2007] [Accepted: 03/07/2008] [Indexed: 11/22/2022] Open
Abstract
No presente estudo, avaliou-se a distribuição dos eosinófilos nas diferentes fases da formação do granuloma hepático de camundongos infectados pelo Schistosoma mansoni. A partir dos resultados obtidos sugerimos uma nova classificação para a evolução do granuloma hepático em camundongos montada a partir de fases descritas por outros autores. Em cada fase há um padrão diferente de distribuição dos eosinófilos. Na fase necrótico-exudativa os eosinófilos encontram-se concentrados na periferia e no centro do granuloma e na área de necrose eles são escassos; na "produtiva" os eosinófilos estão ainda distribuídos de maneira difusa por todo o granuloma; na de cura por fibrose se concentram na periferia e no centro do granuloma. Os eosinófilos estavam em contato direto com os ovos em todos os estágios de evolução dos granulomas. Conclui-se então que a dinâmica dos eosinófilos possui papel importante na formação da reação granulomatosa do hospedeiro e resolução do processo inflamatório causado pelo ovo do parasita, além de acrescentar novos dados na classificação dos granulomas hepáticos.
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Neves RH, Alencar ACMDB, Aguila MB, Mandarim-de-Lacerda CA, Machado-Silva JR, Gomes DC. Hepatic stereology of Schistosomiasis mansoni infected-mice fed a high-fat diet. Mem Inst Oswaldo Cruz 2008; 101 Suppl 1:253-60. [PMID: 17308778 DOI: 10.1590/s0074-02762006000900039] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2006] [Accepted: 06/26/2006] [Indexed: 11/22/2022] Open
Abstract
High-fat diets induce weight gain and fatty liver in wild-type mice. Schistosomiasis mansoni infection also promotes hepatic injury. This study was designed to quantify hepatic alterations in schistosomiasis mansoni-infected mice fed a high fat-rich chow compared to mice fed a standard rodent chow, using stereology. Female SW mice fed each either high-fat diet (29% lipids) or standard chow (12% lipids) over 8 months, and then were infected with Schistosoma mansoni cercariae. Four experimental groups were studied: infected mice fed a high-fat diet (IHFC) or standard chow (ISC), uninfected mice fed a high-fat diet (HFC) or standard chow (SC). Mice were sacrificed during early infection (9 weeks from exposure). The following hepatic biometry and the stereology parameters were determined: volume density (hepatocytes [h], sinusoids [s], steatosis [st] and hepatic fibrosis [hf]); numerical density (hepatocyte nuclei - Nv[h]); absolute number of total hepatocyte N[h], normal hepatocyte N[nh], and binucleated hepatocyte N[bh], percentage of normal hepatocyte P[nh] and binucleated hepatocyte P[bh]. IHFC and HFC groups exhibited TC, HDL-C, LDL-C, and body mass significantly greater (p < 0.05) than control group. No significant differences were found regards liver volume (p = 0.07). Significant differences were observed regards P[nh] (p = 0.0045), P[bh] (p = 0.0045), Nv[h] (p = 0.0006), N[h] (p = 0.0125), N[bh] (p = 0.0164) and N[nh] (p = 0.0078). IHFC mice group presented 29% of binucleated hepatocytes compared to HFC group (19%), ISC group (17%) and SC (6%). Volume density was significantly different between groups: Vv[h] (p = 0.0052), Vv[s] (p = 0.0025), Vv[st] (p = 0.0004), and Vv[hf] (p = 0.0007). In conclusion, schistosomiasis mansoni infection with concurrent high-fat diet promotes intensive quantitative changes in hepatic structure, contributing to an increasing on hepatic regeneration.
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Affiliation(s)
- Renata Heisler Neves
- Laboratório de Helmintos Parasitos de Vertebrados, Departamento de Helmintologia, Instituto Oswaldo Cruz-Fiocruz, Av. Brasil 4365, 21040-900 Rio de Janeiro, RJ, Brazil
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Faria-Pinto P, Meirelles MNL, Lenzi HL, Mota EM, Penido MLO, Coelho PMZ, Vasconcelos EG. Cross-immunoreactivity between anti-potato apyrase antibodies and mammalian ATP diphosphohydrolases: potential use of the vegetal protein in experimental schistosomiasis. Mem Inst Oswaldo Cruz 2006; 101 Suppl 1:359-63. [PMID: 17308798 DOI: 10.1590/s0074-02762006000900059] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2006] [Accepted: 06/26/2006] [Indexed: 11/22/2022] Open
Abstract
We have previously showed that Schistosoma mansoni ATP-diphosphohydrolase and Solanum tuberosum potato apyrase share epitopes and the vegetable protein has immunostimulatory properties. Here, it was verified the in situ cross-immunoreactivity between mice NTPDases and anti-potato apyrase antibodies produced in rabbits, using confocal microscopy. Liver samples were taken from Swiss Webster mouse 8 weeks after infection with S. mansoni cercariae, and anti-potato apyrase and TRITC-conjugated anti-rabbit IgG antibody were tested on cryostat sections. The results showed that S. mansoni egg ATP diphosphohydrolase isoforms, developed by anti-potato apyrase, are expressed in miracidial and egg structures, and not in granulomatous cells and hepatic structures (hepatocytes, bile ducts, and blood vessels). Therefore, purified potato apyrase when inoculated in rabbit generates polyclonal sera containing anti-apyrase antibodies that are capable of recognizing specifically S. mansoni ATP diphosphohydrolase epitopes, but not proteins from mammalian tissues, suggesting that autoantibodies are not induced during potato apyrase immunization. A phylogenetic tree obtained for the NTPDase family showed that potato apyrase had lower homology with mammalian NTPDases 1-4, 7, and 8. Further analysis of potato apyrase epitopes could implement their potential use in schistosomiasis experimental models.
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Affiliation(s)
- P Faria-Pinto
- Departamento de Bioquímica, ICB, Universidade Federal de Juiz de Fora, 36015-400 Juiz de Fora, MG, Brazil
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Lenzi HL, Romanha WDS, Santos RMZD, Rosas A, Mota EM, Manso PPA, Caputo LFG, Pelajo-Machado M. Four whole-istic aspects of schistosome granuloma biology: fractal arrangement, internal regulation, autopoietic component and closure. Mem Inst Oswaldo Cruz 2006; 101 Suppl 1:219-31. [PMID: 17308773 DOI: 10.1590/s0074-02762006000900034] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2006] [Accepted: 06/26/2006] [Indexed: 11/22/2022] Open
Abstract
This paper centers on some whole-istic organizational and functional aspects of hepatic Schistosoma mansoni granuloma, which is an extremely complex system. First, it structurally develops a collagenic topology, originated bidirectionally from an inward and outward assembly of growth units. Inward growth appears to be originated from myofibroblasts derived from small portal vessel around intravascular entrapped eggs, while outward growth arises from hepatic stellate cells. The auto-assembly of the growth units defines the three-dimensional scaffold of the schistosome granulomas. The granuloma surface irregularity and its border presented fractal dimension equal to 1.58. Second, it is internally regulated by intricate networks of immuneneuroendocrine stimuli orchestrated by leptin and leptin receptors, substance P and Vasoactive intestinal peptide. Third, it can reach the population of +/- 40,000 cells and presents an autopoietic component evidenced by internal proliferation (Ki-67+ Cells), and by expression of c-Kit+ Cells, leptin and leptin receptor (Ob-R), granulocyte-colony stimulating factor (G-CSF-R), and erythropoietin (Epo-R) receptors. Fourth, the granulomas cells are intimately connected by pan-cadherins, occludin and connexin-43, building a state of closing (granuloma closure). In conclusion, the granuloma is characterized by transitory stages in such a way that its organized structure emerges as a global property which is greater than the sum of actions of its individual cells and extracellular matrix components.
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Affiliation(s)
- H L Lenzi
- Departamento de Patologia, Instituto Oswaldo Cruz-Fiocruz, 21040-900 Rio de Janeiro, RJ, Brazil.
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Silva IMD, Thiengo R, Conceição MJ, Rey L, Pereira Filho E, Ribeiro PC. Cystoscopy in the diagnosis and follow-up of urinary schistosomiasis in Brazilian soldiers returning from Mozambique, Africa. Rev Inst Med Trop Sao Paulo 2006; 48:39-42. [PMID: 16547578 DOI: 10.1590/s0036-46652006000100008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The assessment of urinary schistosomiasis in individuals coming from endemic areas often requires diagnostic resources not used in areas of exposure in order to determine complications or to establish more precise criteria of cure. Cystoscopy and 24-hour urine examination were performed, after treatments with praziquantel 40 mg/kg body weight, single dose, on 25 Brazilian military men who were part of a United Nations peace mission to Mozambique in 1994. The median age of the individuals was 29 years and all presented a positive urine parasitological exam. The alterations detected by cystoscopy were hyperemia and granulomas in the vesical submucosa in 59.1% of the individuals and only granulomas in 40.9%. A vesical biopsy revealed granulomas in all patients and viable eggs in 77.3% even after a period during which the patients no longer excreted eggs in urine. Cystoscopy after treatment, followed by biopsy and histopathological evaluation, performed in areas where the evolution of the disease can be better monitored, was found to be a safe criterion of parasitological cure.
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Affiliation(s)
- Iran Mendonça da Silva
- Divisão de Ensino e Pesquisa, Instituto de Biologia do Exército, Rio de Janeiro, Brazil.
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Costa-Silva M, Rodrigues-Silva R, Hulstijn M, Neves RH, de Souza Panasco M, Lenzi HL, Machado-Silva JR. Natural Schistosoma mansoni infection in Nectomys squamipes: histopathological and morphometric analysis in comparison to experimentally infected N. squamipes and C3H/He mice. Mem Inst Oswaldo Cruz 2003; 97 Suppl 1:129-42. [PMID: 12426608 DOI: 10.1590/s0074-02762002000900026] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Histopathologic and morphometric (area, perimeter, major and minor diameters) analysis of hepatic granulomas isolated from twelve naturally infected Nectomys squamipes were compared to four experimentally infected ones and six C3H/He mice. Liver paraffin sections were stained for cells and extracellular matrix. Both groups of N. squamipes presented peculiar granulomas consisting predominantly of large macrophages, full of schistosome pigment, characterizing an exudative-macrophage granuloma type, smaller than the equivalent granuloma type in mouse. Naturally infected animals exhibited granulomas in different stages of development, including large number of involutional types. Morphometric analysis showed that all measurements were smaller in naturally infected animals than in other groups. The results demonstrated that both N. squamipes groups reproduced, with small variations, the hepatic granuloma aspects already described in cricetidium (Calomys callosus), showing a genetic tendency to set up strong macrophage responses and small granulomas. Unexpectedly, natural infection did not engender distinguished histopathological characteristics distinct from those derived from experimental single infection, showing changes predominantly secondary to the duration of infection. It appears that the variability of the inocula (and the number of infections?) interfere more with the quantity than with the quality of the pathological changes, denoting some morpho-functional determinism in the response to schistosomal infection dependent on the animal species.
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Affiliation(s)
- Michele Costa-Silva
- Departamento de Patologia e Laboratórios, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, 20550-170, Brasil.
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Pyrrho ADS, Ramos JA, Neto RM, Silva CSD, Lenzi HL, Takiya CM, Gattass CR. Dexamethasone, a drug for attenuation of Schistosoma mansoni infection morbidity. Antimicrob Agents Chemother 2002; 46:3490-8. [PMID: 12384355 PMCID: PMC128711 DOI: 10.1128/aac.46.11.3490-3498.2002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2002] [Revised: 05/09/2002] [Accepted: 06/26/2002] [Indexed: 11/20/2022] Open
Abstract
To investigate the possible use of immunomodulators as coadjuvants in the treatment of chronic schistosomiasis, the study described in the present report evaluated the effects of dexamethasone on several parameters which reflect disease severity and morbidity. Parasitological, immunological, and histological parameters were analyzed in animals treated from the first day of infection or after 35 days of infection. In both situations, dexamethasone had no effect on the parasite burden but altered the egg distribution in tissue, indicating that under the schedule used it did not interfere with the development of adult worms or oviposition. Treated mice showed a decrease in the number of eggs in hepatic tissue, reduced granuloma sizes, reduced levels of granuloma maturation, and reduced collagen contents. Dexamethasone-treated mice also had decreased gamma interferon, interleukin-12 (IL-12), and IL-4 levels in serum and increased IL-10 levels in serum. Taken together, these data suggested a decrease in the severity of murine schistosomiasis and point to dexamethasone as a convenient and promising coadjuvant agent in the therapy of this infection.
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Affiliation(s)
- Alexandre dos Santos Pyrrho
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Cheever AW, Lenzi JA, Lenzi HL, Andrade ZA. Experimental models of Schistosoma mansoni infection. Mem Inst Oswaldo Cruz 2002; 97:917-40. [PMID: 12471417 DOI: 10.1590/s0074-02762002000700002] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Experimental models of Schistosoma mansoni infections in mammals have contributed greatly to our understanding of the pathology and pathogenesis of infection. We consider here hepatic and extrahepatic disease in models of acute and chronic infection. Experimental schistosome infections have also contributed more broadly to our understanding of granulomatous inflammation and our understanding of Th1 versus Th2 related inflammation and particularly to Th2-mediated fibrosis of the liver.
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Lenzi HL, Kimmel E, Schechtman H, Pelajo-Machado M, Vale BS, Panasco MS, Lenzi JA. Collagen arrangement in hepatic granuloma in mice infected with Schistosoma mansoni: dependence on fiber radiation centers. Braz J Med Biol Res 1999; 32:639-43. [PMID: 10412576 DOI: 10.1590/s0100-879x1999000500018] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The collagen structure of isolated and in situ liver granuloma from Swiss Webster mice infected with Schistosoma mansoni was sequentially and three-dimensionally analyzed during different times of infection (early acute, acute, transitional acute-chronic, and chronic phases) by laser scanning confocal microscopy and electron scanning variable vacuum microscopy. The initial granuloma structure is characterized by vascular collagen residues and by anchorage points (or fiber radiation centers), from where collagenous fibers are angularly shed and self-assembled. During the exudative-productive stage, the self-assembly of these fibers minimizes energy and mass through continuous tension and focal compression. The curvature or angles between collagen fibers probably depends on the fibroblastic or myofibroblastic organization of stress fibers. Gradually, the loose unstable lattice of the exudative-productive stage transforms into a highly packed and stable architecture as a result of progressive compactness. The three-dimensional architecture of granulomas provides increased tissue integrity, efficient distribution of soluble compounds and a haptotactic background to the cells.
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Affiliation(s)
- H L Lenzi
- Departamento de Patologia, Instituto Oswaldo Cruz, RJ, Brasil.
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