1
|
Góes VCD, Brandão-Bezerra L, Neves RH, Oliveira AVD, Machado-Silva JR. Impact of acute schistosomiasis mansoni and concurrent type 1 diabetes on pancreatic architecture in mice. Exp Parasitol 2024; 268:108885. [PMID: 39725378 DOI: 10.1016/j.exppara.2024.108885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2024] [Revised: 11/13/2024] [Accepted: 12/24/2024] [Indexed: 12/28/2024]
Abstract
It is not well understood how type 1 diabetes (T1D) and concomitant acute schistosomiasis mansoni affect pancreatic architecture. Male Swiss mice were administered streptozotocin (single 100 mg/kg i.p.) and thirty days later infected with 80 Schistosoma mansoni cercariae. Mice were divided into groups (n = 5): A (healthy control), B (infected), C (uninfected diabetic), and D (diabetic + infected) and euthanized at week 9 post-infection. Blood glucose levels, biometry, stereology, and pancreatic histology were evaluated. Groups C and D showed hyperglycemia (>200 mg/dL). Group B had a higher (+79%) pancreatic mass than A. The endocrine pancreas showed fewer islets of Langerhans (-62%; -50%) and a smaller islet area (-36%; -30%) in C and D, respectively, compared to A. Group D had a smaller (-37%) islet area than B. The volume density of the islets was reduced (-33%) in group C compared to A. Within the exocrine pancreas, the volume density of the pancreatic parenchyma was reduced in groups B (-29%) and D (-26%), and increased in C (+15%) compared to A. Group D was reduced (-35%) compared to C. Group D showed generalized pancreatitis, including disrupted tissue with multiple nuclei of destroyed acinar cells and lost connective tissue and acinar cells with a paucity of zymogen granules. Pancreatic stellate cells were found around areas of distorted architecture. Paired adult worms were found within the pancreatic vessels. In conclusion, concomitant T1D and schistosomiasis mansoni promote extensive exocrine and endocrine changes in the pancreas, whereas pancreatic involvement begins in acute schistosomiasis.
Collapse
Affiliation(s)
- Vanessa Coelho de Góes
- 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
| | - 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
| | - 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.
| | - Albanita Viana de Oliveira
- Department of Pathology and Laboratories, Medical Sciences College (FCM), Rio de Janeiro State University, 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
| |
Collapse
|
2
|
Silva TD, Gonçalves-Santos E, Gonçalves RV, Souza RLM, Caetano JE, Caldas IS, Diniz LF, Marques MJ, Novaes RD. Matrix metalloproteinases inhibition reveals the association between inflammation, collagen accumulation and intestinal translocation of Schistosoma mansoni eggs in vivo. Int Immunopharmacol 2024; 127:111353. [PMID: 38086267 DOI: 10.1016/j.intimp.2023.111353] [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: 11/08/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 01/18/2024]
Abstract
Schistosomiasis mansoni is a parasitic infection that causes enterohepatic morbidity associated with severe granulomatous inflammation triggered by parasite eggs. In this disease, granulomatous inflammation leads to intestinal erosion and environmental excretion of S. mansoni eggs from feces, an essential process for propagating the parasite and infecting host organisms. Metalloproteinases (MMP) are involved in S. mansoni-induced hepatic granulomatous inflammation and fibrosis. However, the relationship between MMP and collagen accumulation with the intestinal excretion of parasite eggs remains unclear. Thus, the present study investigated whether MMP inhibition is capable of modulating granulomatous inflammation, collagen accumulation and mechanical resistance to the point of influencing the dynamics between intestinal retention and excretion of S. mansoni eggs in infected mice. Our findings indicated that doxycycline (a potent MMP inhibitor) aggravates intestinal inflammation and subverts collagen dynamics in schistosomiasis. By attenuating MMP-2 and MMP-9 activity, this drug is capable of enhancing fibrosis and mechanical resistance of the intestinal wall, hindering S. mansoni eggs translocation. Although collagen content was not correlated with MMP activity, intestinal retention and fecal excretion of parasite eggs in untreated mice; these correlations were observed for doxycycline-treated animals. Thus, our study provides evidence that doxycycline is able to attenuate fecal elimination of S. mansoni eggs by inhibiting MMP-2 and MMP-9 activity, events potentially associated with excessive collagen accumulation, which increases intestinal mechanical resistance and hinders eggs translocation through the intestinal wall. Variations in intestinal collagen dynamics are relevant since they may represent changes in the environmental dispersion of S. mansoni eggs, bringing repercussions for schistosomiasis propagation.
Collapse
Affiliation(s)
- Thiago D Silva
- Programa de Pós-Graduação em Biociências Aplicadas à Saúde, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil
| | - Elda Gonçalves-Santos
- Programa de Pós-Graduação em Biociências Aplicadas à Saúde, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil
| | - Reggiani V Gonçalves
- Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa 36570-900, Minas Gerais, Brazil
| | - Raquel L M Souza
- Instituto de Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil
| | - José Edson Caetano
- Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil
| | - Ivo S Caldas
- Instituto de Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil; Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil
| | - Livia F Diniz
- Instituto de Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil; Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil
| | - Marcos J Marques
- Instituto de Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil; Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil
| | - Rômulo D Novaes
- Programa de Pós-Graduação em Biociências Aplicadas à Saúde, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil; Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa 36570-900, Minas Gerais, Brazil; Instituto de Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil; Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas 37130-000, Minas Gerais, Brazil.
| |
Collapse
|
3
|
Miranda GS, Rodrigues JGM, Resende SD, Camelo GMA, Silva JKADO, Dos Santos JCR, Silva-Souza N, Pereira FB, Furtado LFV, Rabelo ÉML, Negrão-Corrêa D. From field to laboratory: isolation, genetic assessment, and parasitological behavior of Schistosoma mansoni obtained from naturally infected wild rodent Holochilus sciureus (Rodentia, Cricetidae), collected in Northeastern Brazil. Parasitol Res 2023; 122:395-411. [PMID: 36534238 DOI: 10.1007/s00436-022-07710-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 10/27/2022] [Indexed: 12/23/2022]
Abstract
Wild rodent species are naturally infected by Schistosoma mansoni; however, the genetic characterization of the parasite, its parasitological features, and its role in human schistosomiasis are poorly understood. In this study, we isolated and characterized Schistosoma from naturally infected Holochilus sciureus, called HS strain, collected from a schistosomiasis endemic region in Maranhão State, Brazil. To isolate the parasite, miracidia obtained from the livers of H. sciureus were used to infect Biomphalaria glabrata of sympatric (called SB) and allopatric (called BH) strains, and the produced cercariae were subcutaneously inoculated into hamsters and/or BALB/c mice. Parasitological kinetics in experimentally infected hosts were evaluated, and the tRNACys-12S (referred to as 16S herein) and cox 1 regions of mtDNA from isolated worms were amplified and sequenced. Only miracidia obtained from infected mice, but not from hamsters, were capable of infecting B. glabrata, allowing maintenance of the isolated parasite. Cox1 and 16S mtDNA sequences showed 100% similarity with S. mansoni, and phylogenetic analysis showed that the HS strain of S. mansoni forms an assemblage with isolates from America and Kenya, confirming the conspecificity. Experimental infection of B. glabrata SB with S. mansoni HS resulted in two peaks of cercariae shedding at 45 and 70 days post-infection (dpi) and caused higher mortality than in B. glabrata BH. The worm recovery rate in mice was approximately 13%, and the peak of egg elimination occurred at the 10th week post-infection. Therefore, S. mansoni obtained from H. sciureus was successfully isolated, genetically characterized, and maintained in mice, allowing further study of this schistosome strain.
Collapse
Affiliation(s)
- Guilherme Silva Miranda
- Department of Parasitology, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, CEP: 31.270-010, 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, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, CEP: 31.270-010, Brazil
| | - Samira Diniz Resende
- Department of Parasitology, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, CEP: 31.270-010, Brazil
| | - Genil Mororó Araújo Camelo
- Department of Parasitology, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, CEP: 31.270-010, Brazil
| | | | - Jose Carlos Reis Dos Santos
- Department of Parasitology, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, CEP: 31.270-010, Brazil
| | - Nêuton Silva-Souza
- Department of Chemistry and Biology, State University of Maranhão, São Luís, Brazil
| | - Felipe Bisaggio Pereira
- Department of Parasitology, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, CEP: 31.270-010, Brazil
| | - Luis Fernando Viana Furtado
- Department of Clinical and Toxicological Analysis, Federal University of Minas Gerais, Av. Antonio Carlos 6627, Campus Pampulha, MG, Belo Horizonte, Brazil
| | - Élida Mara Leite Rabelo
- Department of Parasitology, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, CEP: 31.270-010, Brazil
| | - Deborah Negrão-Corrêa
- Department of Parasitology, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, CEP: 31.270-010, Brazil.
| |
Collapse
|
4
|
Miranda GS, Rodrigues JGM, Silva JKADO, Camelo GMA, Silva-Souza N, Neves RH, Machado-Silva JR, Negrão-Corrêa DA. New challenges for the control of human schistosomiasis: The possible impact of wild rodents in Schistosoma mansoni transmission. Acta Trop 2022; 236:106677. [PMID: 36063905 DOI: 10.1016/j.actatropica.2022.106677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 08/27/2022] [Accepted: 09/01/2022] [Indexed: 11/17/2022]
Abstract
Schistosomiasis is a neglected parasitic disease caused by digenean trematodes from the genus Schistosoma that affects millions of people worldwide. Despite efforts to control its transmission, this disease remains active within several endemic regions of Africa, Asia, and the Americas. In addition to the deficits in sanitation and educational structure, another major obstacle hindering the eradication of schistosomiasis is the ability of Schistosoma spp. to naturally infect multiple vertebrate hosts, particularly wild rodents. Due to climate change and other anthropogenic disturbances, contact between humans and wild animals has increased, and this has contributed to more frequent interactions between Schistosoma species that typically infect different hosts. This new transmission dynamic involving Schistosoma spp., humans, wild rodents, and livestock could potentially increase the frequency of Schistosoma hybridization and the establishment of new genotypes and strains. Although it is not currently possible to precisely measure how this biological phenomenon affects the epidemiology and morbidity of schistosomiasis, we speculate that these Schistosoma variants may negatively impact control strategies, treatment regimens, and disease burden in humans. In the present study, we discuss the natural infections of wild rodents with Schistosoma spp., the role of these animals as Schistosoma spp. reservoirs, and how they may select hybrids and strains of Schistosoma mansoni. We also discuss measures required to shed light on the actual role of the wild rodents Nectomys squamipes and Holochilus sciureus in the transmission and morbidity of schistosomiasis in Brazil.
Collapse
Affiliation(s)
- Guilherme Silva Miranda
- Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG CEP: 31270-010, 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, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG CEP: 31270-010, Brazil
| | - Jeferson Kelvin Alves de Oliveira Silva
- Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG CEP: 31270-010, Brazil
| | - Genil Mororó Araújo Camelo
- Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG CEP: 31270-010, Brazil
| | - Nêuton Silva-Souza
- Department of Chemistry and Biology, State University of Maranhão, São Luis, Brazil
| | - Renata Heisler Neves
- Department of Microbiology, Immunology and Parasitology, Faculty of Medical Sciences, Biomedical Center, University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - José Roberto Machado-Silva
- Department of Microbiology, Immunology and Parasitology, Faculty of Medical Sciences, Biomedical Center, University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Deborah Aparecida Negrão-Corrêa
- Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Avenida Antônio Carlos 6627, Campus Pampulha, Belo Horizonte, MG CEP: 31270-010, Brazil.
| |
Collapse
|
5
|
Amaral KB, Silva TP, Malta KK, Carmo LAS, Dias FF, Almeida MR, Andrade GFS, Martins JS, Pinho RR, Costa-Neto SF, Gentile R, Melo RCN. Natural Schistosoma mansoni Infection in the Wild Reservoir Nectomys squamipes Leads to Excessive Lipid Droplet Accumulation in Hepatocytes in the Absence of Liver Functional Impairment. PLoS One 2016; 11:e0166979. [PMID: 27880808 PMCID: PMC5120838 DOI: 10.1371/journal.pone.0166979] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 11/07/2016] [Indexed: 01/06/2023] Open
Abstract
Schistosomiasis is a neglected tropical disease of a significant public health impact. The water rat Nectomys squamipes is one of the most important non-human hosts in the schistosomiasis mansoni transmission in Brazil, being considered a wild reservoir. Cellular mechanisms that contribute to the physiological adaptation of this rodent to the Schistosoma mansoni parasite are poorly understood. Here we identified, for the first time, that a hepatic steatosis, a condition characterized by excessive lipid accumulation with formation of lipid droplets (LDs) within hepatocytes, occurs in response to the natural S. mansoni infection of N. squamipes, captured in an endemic region. Significant increases of LD area in the hepatic tissue and LD numbers/hepatocyte, detected by quantitative histopathological and ultrastructural analyses, were paralleled by increased serum profile (total cholesterol and triglycerides) in infected compared to uninfected animals. Raman spectroscopy showed high content of polyunsaturated fatty acids (PUFAs) in the liver of both groups. MALDI-TOFF mass spectroscopy revealed an amplified pool of omega-6 PUFA arachidonic acid in the liver of infected animals. Assessment of liver functional activity by the levels of hepatic transaminases (ALT and AST) did not detect any alteration during the natural infection. In summary, this work demonstrates that the natural infection of the wild reservoir N. squamipes with S. mansoni elicits hepatic steatosis in the absence of liver functional harm and that accumulation of lipids, markedly PUFAs, coexists with low occurrence of inflammatory granulomatous processes, suggesting that lipid stores may be acting as a protective mechanism for dealing with the infection.
Collapse
Affiliation(s)
- Kátia B. Amaral
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil, 36036–900
| | - Thiago P. Silva
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil, 36036–900
| | - Kássia K. Malta
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil, 36036–900
| | - Lívia A. S. Carmo
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil, 36036–900
| | - Felipe F. Dias
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil, 36036–900
| | - Mariana R. Almeida
- Laboratory of Plasmonic Nanostructures, Molecular Spectroscopy and Structure Group, Department of Chemistry, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil, 36036–900
| | - Gustavo F. S. Andrade
- Laboratory of Plasmonic Nanostructures, Molecular Spectroscopy and Structure Group, Department of Chemistry, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil, 36036–900
| | - Jefferson S. Martins
- Department of Physics, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil, 36036–900
| | - Roberto R. Pinho
- Department of Physics, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil, 36036–900
| | - Sócrates F. Costa-Neto
- Laboratory of Biology and Parasitology of Wild Reservoir Mammals, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Rosana Gentile
- Laboratory of Biology and Parasitology of Wild Reservoir Mammals, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Rossana C. N. Melo
- Laboratory of Cellular Biology, Department of Biology, Federal University of Juiz de Fora (UFJF), Juiz de Fora, MG, Brazil, 36036–900
- * E-mail:
| |
Collapse
|