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Legabão BC, Galinari CB, Santos RSD, Bruschi ML, Gremião IDF, Boechat JS, Pereira SA, Malacarne LC, Caetano W, Bonfim-Mendonça PS, Svidzinski TIE. In vitro antifungal activity of curcumin mediated by photodynamic therapy on Sporothrix brasiliensis. Photodiagnosis Photodyn Ther 2023; 43:103659. [PMID: 37336466 DOI: 10.1016/j.pdpdt.2023.103659] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 06/06/2023] [Accepted: 06/16/2023] [Indexed: 06/21/2023]
Abstract
BACKGROUND Sporothrix brasiliensis is a pathogenic dimorphic fungus that affects humans and animals causing sporotrichosis. The treatment of this disease with conventional antifungals commonly results in therapeutic failures and resistance. Therefore, this study aimed to evaluate the in vitro effect of curcumin (CUR) mediated by photodynamic therapy (PDT) in its pure state and incorporated into pharmaceutical formulation in gel form, on the filamentous and yeast forms of S. brasiliensis. METHODS Cells from both forms of the fungus were treated with pure curcumin (PDT-CUR). For this, CUR concentrations ranging from 0.09 to 50 μM were incubated for 15 min and then irradiated with blue LED at 15 J/cm². Similarly, it was performed with PDT-CUR-gel, at lower concentration with fungistatic action. After, a qualitative and quantitative (colony forming units (CFU)) analysis of the results was performed. Additionally, reactive oxygen species (ROS) were detected by flow cytometry. Results PDT with 0.78 μM of CUR caused a significant reduction (p < 0.05) in cells of the filamentous and yeast form, 1.38 log10 and 1.18 log10, respectively, in comparison with the control. From the concentration of 1.56 μM of CUR, there was a total reduction in the number of CFU (≥ 3 log10). The PDT-CUR-gel, in relation to its base without CUR, presented a significant reduction (p < 0.05) of 0.83 log10 for the filamentous form and for the yeast form, 0.72 log10. ROS release was detected after the PDT-CUR assay, showing that this may be an important pathway of death caused by photoinactivation. Conclusion PDT-CUR has an important in vitro antifungal action against S. brasiliensis strains in both morphologies.
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Affiliation(s)
- Bárbara Cipulo Legabão
- Graduate Student (Master's), Biosciences and Pathophysiology Program, State University of Maringá, Maringá, Brazil
| | - Camila Barros Galinari
- Postgraduate student (PhD), Biosciences and Pathophysiology Program, State University of Maringá, Maringá, Brazil
| | - Rafaela Said Dos Santos
- Postgraduate student (PhD), R & D Laboratory of Drug Distribution Systems, Department of Pharmacy, State University of Maringá, Maringá, Brazil
| | - Marcos Luciano Bruschi
- Professor, Drug Distribution Systems R&D Laboratory, Department of Pharmacy, State University of Maringá, Maringá, Brazil
| | - Isabella Dib Ferreira Gremião
- Laboratory of clinical Research Dermatozoonoses in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation. Av. Brasil, 4365 - Manguinhos, Rio de Janeiro 21040-900, Brazil
| | - Jéssica Sepúlveda Boechat
- Laboratory of clinical Research Dermatozoonoses in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation. Av. Brasil, 4365 - Manguinhos, Rio de Janeiro 21040-900, Brazil
| | - Sandro Antônio Pereira
- Laboratory of clinical Research Dermatozoonoses in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation. Av. Brasil, 4365 - Manguinhos, Rio de Janeiro 21040-900, Brazil
| | | | - Wilker Caetano
- Professor, Department of Chemistry, State University of Maringá, Maringá, Brazil
| | - Patrícia S Bonfim-Mendonça
- Professor, Department of Clinical Analysis and Biomedicine, State University of Maringá, Av. Colombo 5790, block T20 room 203, Maringá CEP: 87020-900, Brazil
| | - Terezinha I E Svidzinski
- Professor, Department of Clinical Analysis and Biomedicine, State University of Maringá, Av. Colombo 5790, block T20 room 203, Maringá CEP: 87020-900, Brazil.
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Mendes Junior AAV, Filgueira CPB, Miranda LDFC, de Almeida AB, Cantanhêde LM, Fagundes A, Pereira SA, Menezes RC, Cupolillo E. First report of Leishmania (Mundinia) martiniquensis in South American territory and confirmation of Leishbunyavirus infecting this parasite in a mare. Mem Inst Oswaldo Cruz 2023; 118:e220220. [PMID: 37194810 DOI: 10.1590/0074-02760220220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 04/03/2023] [Indexed: 05/18/2023] Open
Abstract
BACKGROUND Epidemiological data related to leishmaniases or Leishmania infection in horses are scarce. However, studies carried out in different regions in the world showed equids parasitised by Leishmania braziliensis, L. infantum and L. martiniquensis. OBJECTIVES Identify the Leishmania species causing cutaneous leishmaniasis in a mare, living in Rio de Janeiro State (Brazil), and search the presence of Leishmania viruses in the isolated parasite. METHODS Isoenzymes and polymerase chain reaction (PCR) targeting ITSrDNA region followed by sequencing were conducted for typing the isolated parasite. A search for Leishmania virus infection was also performed. FINDINGS The mare presented skin nodules and ulcers in the left pinna caused by Leishmania spp. that was detected by culture and PCR. The parasite was identified as Leishmania (Mundinia) martiniquensis, infected by Leishbunyavirus (LBV), representing the first description of this species in South America. The animal travelled to different Brazilian regions, but not to outside the country. MAIN CONCLUSIONS The worldwide distribution of L. martiniquensis and its infection by LBV were confirmed in this study, indicating the autochthonous transmission cycle in Brazil. The clinical profile of the disease in the mare, showing fast spontaneous healing of cutaneous lesions, may indicate that skin lesions related to L. martiniquensis infection in horses might be underdiagnosed.
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Affiliation(s)
- Artur Augusto Velho Mendes Junior
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia Evandro Chagas, Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, Rio de Janeiro, RJ, Brasil
| | | | - Luciana de Freitas Campos Miranda
- Fundação Oswaldo Cruz-Fiocruz, Laboratório de Pesquisa Clínica e Vigilância em Leishmanioses, Instituto Nacional de Infectologia Evandro Chagas, Rio de Janeiro, RJ, Brasil
| | - Adilson Benedito de Almeida
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia Evandro Chagas, Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, Rio de Janeiro, RJ, Brasil
| | - Lilian Motta Cantanhêde
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Pesquisa em Leishmanioses, Rio de Janeiro, RJ, Brasil
| | - Aline Fagundes
- Fundação Oswaldo Cruz-Fiocruz, Laboratório de Pesquisa Clínica e Vigilância em Leishmanioses, Instituto Nacional de Infectologia Evandro Chagas, Rio de Janeiro, RJ, Brasil
| | - Sandro Antônio Pereira
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia Evandro Chagas, Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, Rio de Janeiro, RJ, Brasil
| | - Rodrigo Caldas Menezes
- Fundação Oswaldo Cruz-Fiocruz, Instituto Nacional de Infectologia Evandro Chagas, Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, Rio de Janeiro, RJ, Brasil
| | - Elisa Cupolillo
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Pesquisa em Leishmanioses, Rio de Janeiro, RJ, Brasil
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Silva MST, Coutinho C, Torres TS, Peixoto E, Ismério R, Lessa F, Nunes EP, Hoagland B, Echeverria Guevara AD, Bastos MO, Ferreira Tavares IC, Diniz Ribeiro MP, Meneguetti Seravalli Ramos MR, Andrade HB, Lovetro Santana AP, Santini-Oliveira M, Santos Netto JB, Reges P, Magalhães MA, Silva Rosadas LA, Nazer S, Velasque L, Cardoso SW, da Silva EE, Veloso VG, Wakimoto MD, Grinsztejn B, Trepow M, Ferreira IG, Villela L, Fraga RT, Castro de Souza Pires M, Otavio da Silva Escada R, Paiva de Sousa L, Umaña Robleda GL, Santos DV, Siqueira Camacho LR, Amparo P, Jaegger de França JV, de Oliveira Heluy Correa F, Costa de Sousa BI, Vicari do Valle B, Bortot Soares JP, Fonseca Ferreira LC, da Silva Martins P, Mesquita MB, Hildebrant Coutinho JR, de Moraes Perlingeiro R, Peixoto de Castro Oliveira P, Pedroso Barbosa HP, Accetta AF, Cunha M, Eiras RV, Martins dos Santos T, Davila da Silva W, Silveira MDV, de Souza Brum T, Calvet GA, Menezes RC, Pereira SA. Ambulatory and hospitalized patients with suspected and confirmed mpox: an observational cohort study from Brazil. Lancet Reg Health Am 2022; 17:100406. [PMID: 36776570 PMCID: PMC9904017 DOI: 10.1016/j.lana.2022.100406] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/06/2022] [Accepted: 11/11/2022] [Indexed: 12/14/2022]
Abstract
Background By October 30, 2022, 76,871 cases of mpox were reported worldwide, with 20,614 cases in Latin America. This study reports characteristics of a case series of suspected and confirmed mpox cases at a referral infectious diseases center in Rio de Janeiro, Brazil. Methods This was a single-center, prospective, observational cohort study that enrolled all patients with suspected mpox between June 12 and August 19, 2022. Mpox was confirmed by a PCR test. We compared characteristics of confirmed and non-confirmed cases, and among confirmed cases according to HIV status using distribution tests. Kernel estimation was used for exploratory spatial analysis. Findings Of 342 individuals with suspected mpox, 208 (60.8%) were confirmed cases. Compared to non-confirmed cases, confirmed cases were more frequent among individuals aged 30-39 years, cisgender men (96.2% vs. 66.4%; p < 0.0001), reporting recent sexual intercourse (95.0% vs. 69.4%; p < 0.0001) and using PrEP (31.6% vs. 10.1%; p < 0.0001). HIV (53.2% vs. 20.2%; p < 0.0001), HCV (9.8% vs. 1.1%; p = 0.0046), syphilis (21.2% vs. 16.3%; p = 0.43) and other STIs (33.0% vs. 21.6%; p = 0.042) were more frequent among confirmed mpox cases. Confirmed cases presented more genital (77.3% vs. 39.8%; p < 0.0001) and anal lesions (33.1% vs. 11.5%; p < 0.0001), proctitis (37.1% vs. 13.3%; p < 0.0001) and systemic signs and symptoms (83.2% vs. 64.5%; p = 0.0003) than non-confirmed cases. Compared to confirmed mpox HIV-negative, HIV-positive individuals were older, had more HCV coinfection (15.2% vs. 3.7%; p = 0.011), anal lesions (45.7% vs. 20.5%; p < 0.001) and clinical features of proctitis (45.2% vs. 29.3%; p = 0.058). Interpretation Mpox transmission in Rio de Janeiro, Brazil, rapidly evolved into a local epidemic, with sexual contact playing a crucial role in its dynamics and high rates of coinfections with other STI. Preventive measures must address stigma and social vulnerabilities. Funding Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz).
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Affiliation(s)
- Mayara Secco Torres Silva
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Carolina Coutinho
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Thiago Silva Torres
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Eduardo Peixoto
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Ronaldo Ismério
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Flavia Lessa
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Estevão Portela Nunes
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Brenda Hoagland
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | | | - Matheus Oliveira Bastos
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | | | - Maria Pia Diniz Ribeiro
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | | | - Hugo Boechat Andrade
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Ana Paula Lovetro Santana
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Marilia Santini-Oliveira
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Juliana Barbosa Santos Netto
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Paula Reges
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Monica Avelar Magalhães
- Instituto de Comunicação e Informação Científica e Tecnológica em Saúde, Fundação Oswaldo Cruz (ICICT-Fiocruz), Rio de Janeiro, RJ, Brazil
| | | | - Sandro Nazer
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Luciane Velasque
- Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Departamento de Matemática e Estatística, Rio de Janeiro, RJ, Brazil
| | - Sandra Wagner Cardoso
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Edson Elias da Silva
- Instituto Oswaldo Cruz, Fundação Oswaldo Cruz (IOC-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Valdilea Gonçalves Veloso
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Mayumi Duarte Wakimoto
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Beatriz Grinsztejn
- Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI-Fiocruz), Rio de Janeiro, RJ, Brazil,Corresponding author. Av Brasil 4365 Manguinhos, Rio de Janeiro, RJ, Brazil.
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Lara da Costa G, Escórcio Ferreira I, Corrêa-Moreira D, Marinho A, Benedito de Almeida A, Antônio Pereira S, Moraes Borba C, Marques Evangelista Oliveira M. Soil samples from sporotrichosis transmission belt area: Searching for fungal species and their antagonistic activity against Sporothrix brasiliensis. Front Cell Infect Microbiol 2022; 12:1033969. [PMID: 36530440 PMCID: PMC9751316 DOI: 10.3389/fcimb.2022.1033969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 11/07/2022] [Indexed: 12/04/2022] Open
Abstract
Since 1998, the state of Rio de Janeiro, Brazil, has become a public health problem regarding sporotrichosis, a disease caused by Sporothrix spp. involving contact with infected cats. Efforts to isolate these species from environmental sources are not always successful. In our study, soil from residences situated in cities of Rio de Janeiro where cats with sporotrichosis live was collected and cultured an attempt to isolate Sporothrix spp. but it was not successful. However, other saprophytic fungal species were isolated from soil and identified and among them Purpureocillium lilacinum was the most frequent. From there, we decided to study the in vitro interaction of this species with S. brasiliensis, the principal agent that causes sporotrichosis in this state. The results showed that ten isolates of P. lilacinum inhibited the radial mycelial growth of S. brasiliensis with different percentage of inhibition. The interaction between them revealed the pattern described as overgrowth by antagonist. In conclusion, our data suggest that fungal species with very fast growth and capable of producing metabolites could hinder the growth of Sporothrix spp., it also opens the way for the identification of secondary metabolites with biological activity that could be tested against pathogenic fungi.
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Affiliation(s)
- Gisela Lara da Costa
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Isabella Escórcio Ferreira
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Danielly Corrêa-Moreira
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil,Postdoctoral in Clinical Research in Infectious Diseases, Evandro Chagas National Institute of Infectious Diseases, FIOCRUZ, Rio de Janeiro, Brazil,*Correspondence: Manoel Marques Evangelista Oliveira, ; Danielly Corrêa-Moreira,
| | - Anna Marinho
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Adilson Benedito de Almeida
- Laboratory of Clinical Research in Dermatozoonoses in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases, FIOCRUZ, Rio de Janeiro, Brazil
| | - Sandro Antônio Pereira
- Laboratory of Clinical Research in Dermatozoonoses in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases, FIOCRUZ, Rio de Janeiro, Brazil
| | - Cintia Moraes Borba
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil
| | - Manoel Marques Evangelista Oliveira
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institute, FIOCRUZ, Rio de Janeiro, Brazil,*Correspondence: Manoel Marques Evangelista Oliveira, ; Danielly Corrêa-Moreira,
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Coelho NR, Pimpão AB, Correia MJ, Rodrigues TC, Monteiro EC, Morello J, Pereira SA. Pharmacological blockage of the AHR-CYP1A1 axis: a call for in vivo evidence. J Mol Med (Berl) 2021; 100:215-243. [PMID: 34800164 PMCID: PMC8605459 DOI: 10.1007/s00109-021-02163-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 10/27/2021] [Accepted: 11/03/2021] [Indexed: 01/21/2023]
Abstract
The aryl hydrocarbon receptor (AHR) is a ligand-activated transcription factor that can be activated by structurally diverse compounds arising from the environment and the microbiota and host metabolism. Expanding evidence has been shown that the modulation of the canonical pathway of AHR occurs during several chronic diseases and that its abrogation might be of clinical interest for metabolic and inflammatory pathological processes. However, most of the evidence on the pharmacological abrogation of the AHR-CYP1A1 axis has been reported in vitro, and therefore, guidance for in vivo studies is needed. In this review, we cover the state-of-the-art of the pharmacodynamic and pharmacokinetic properties of AHR antagonists and CYP1A1 inhibitors in different in vivo rodent (mouse or rat) models of disease. This review will serve as a road map for those researchers embracing this emerging therapeutic area targeting the AHR. Moreover, it is a timely opportunity as the first AHR antagonists have recently entered the clinical stage of drug development.
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Affiliation(s)
- N R Coelho
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - A B Pimpão
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - M J Correia
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - T C Rodrigues
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - E C Monteiro
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - J Morello
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal
| | - S A Pereira
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056, Lisboa, Portugal.
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Gomes A, Godinho-Pereira J, Oudot C, Sequeira CO, Macià A, Carvalho F, Motilva MJ, Pereira SA, Matzapetakis M, Brenner C, Santos CN. Berry fruits modulate kidney dysfunction and urine metabolome in Dahl salt-sensitive rats. Free Radic Biol Med 2020; 154:119-131. [PMID: 32437928 DOI: 10.1016/j.freeradbiomed.2020.05.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/21/2020] [Accepted: 05/02/2020] [Indexed: 01/12/2023]
Abstract
Berries are rich sources of (poly)phenols which have been associated with the prevention of cardiovascular diseases in animal models and in human clinical trials. Recently, a berry enriched diet was reported to decrease blood pressure and attenuate kidney disease progression on Dahl salt-sensitive rats. However, the relationship between kidney function, metabolism and (poly)phenols was not evaluated. We hypothesize that berries promote metabolic alterations concomitantly with an attenuation of the progression of renal disease. For that, kidney and urinary metabolomic changes induced by the berry enriched diet in hypertensive rats (Dahl salt-sensitive) were analyzed using liquid chromatography (UPLC-MS/MS) and 1H NMR techniques. Moreover, physiological and metabolic parameters, and kidney histopathological data were also collected. The severity of the kidney lesions promoted in Dahl rats by a high salt diet was significantly reduced by berries, namely a decrease in sclerotic glomeruli. In addition, was observed a high urinary excretion of metabolites that are indicators of alterations in glycolysis/gluconeogenesis, citrate cycle, and pyruvate metabolism in the salt induced-hypertensive rats, a metabolic profile counteracted by berries consumption. We also provide novel insights that relates (poly)phenols consumption with alterations in cysteine redox pools. Cysteine contribute to the redox signaling that is normally disrupted during kidney disease onset and progression. Our findings provide a vision about the metabolic responses of hypertensive rats to a (poly)phenol enriched diet, which may contribute to the understanding of the beneficial effects of (poly)phenols in salt-induced hypertension.
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Affiliation(s)
- A Gomes
- Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2780-901, Oeiras, Portugal; Instituto de Tecnologia Química e Biológica, Universidade NOVA de Lisboa, Av. da República, 2780-157, Oeiras, Portugal
| | - J Godinho-Pereira
- Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2780-901, Oeiras, Portugal; Instituto de Tecnologia Química e Biológica, Universidade NOVA de Lisboa, Av. da República, 2780-157, Oeiras, Portugal
| | - C Oudot
- INSERM UMR-S 1180, University of Paris-Sud, University of Paris-Saclay, 5 rue Jean-Baptiste Clément, 92296, Châtenay Malabry, France
| | - C O Sequeira
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School|Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 130, 1169-056, Lisboa, Portugal
| | - A Macià
- Food Technology Department, Agrotecnio Center, Escuela Técnica Superior de Ingeniería Agraria, University of Lleida, Lleida, Spain
| | - F Carvalho
- Laboratório de Morfologia Renal, Hospital Curry Cabral, EPE, Rua da Beneficência n. 8, 1069-166, Lisboa, Portugal
| | - M J Motilva
- Instituto de Ciencias de la Vid y del Vino-ICVV, CSIC-Universidad de La Rioja-Gobierno de La Rioja, Finca "La Grajera", Carretera de Burgos km 6, 26007, Logroño, La Rioja, Spain
| | - S A Pereira
- CEDOC, Chronic Diseases Research Centre, NOVA Medical School|Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 130, 1169-056, Lisboa, Portugal
| | - M Matzapetakis
- Instituto de Tecnologia Química e Biológica, Universidade NOVA de Lisboa, Av. da República, 2780-157, Oeiras, Portugal
| | - C Brenner
- Université Paris-Saclay, CNRS, Institut Gustave Roussy, Aspects métaboliques et systémiques de l'oncogénèse pour de nouvelles approches thérapeutiques, 94805, Villejuif, France
| | - C N Santos
- Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2780-901, Oeiras, Portugal; Instituto de Tecnologia Química e Biológica, Universidade NOVA de Lisboa, Av. da República, 2780-157, Oeiras, Portugal; CEDOC, Chronic Diseases Research Centre, NOVA Medical School|Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Campo dos Mártires da Pátria, 130, 1169-056, Lisboa, Portugal.
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Ornellas RO, De Lima Barbosa Filho CJ, Alves de Albuquerque DD, Passos Cordeiros JL, Ferreira Gremião ID, Pereira SA, Langoni H, Rosa dos Santos J, Belo VS, Borges Figueiredo F. SEROPREVALENCE OF LEISHMANIASIS, TOXOPLASMOSIS, AND LEPTOSPIROSIS IN THE DOMESTIC FAUNA OF AN ANTHROPIZED ENVIRONMENT OF THE ATLANTIC FOREST IN THE CITY OF RIO DE JANEIRO. AVS 2020. [DOI: 10.5380/avs.v25i2.72238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Brito-Santos F, Reis RS, Coelho RA, Almeida-Paes R, Pereira SA, Trilles L, Meyer W, Wanke B, Lazéra MDS, Gremião IDF. Cryptococcosis due to Cryptococcus gattii VGII in southeast Brazil: The One Health approach revealing a possible role for domestic cats. Med Mycol Case Rep 2019; 24:61-64. [PMID: 31061785 PMCID: PMC6487353 DOI: 10.1016/j.mmcr.2019.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/14/2019] [Accepted: 04/11/2019] [Indexed: 11/23/2022] Open
Abstract
Two cats infected by C. gattii, presented lesions on the nasal region and respiratory signs. Strains were typed as molecular type VGII, mating type alpha, MLST subtypes ST442 and ST185. Since Rio de Janeiro is known as an endemic area for C. neoformans VNI, these cases might be a warning for a possible emergence of C. gattii VGII in southeast Brazil.
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Affiliation(s)
- Fábio Brito-Santos
- Mycology Laboratory, National Institute of Infectious Diseases Evandro Chagas (INI), Fiocruz, Rio de Janeiro, Brazil
| | - Rosani Santos Reis
- Mycology Laboratory, National Institute of Infectious Diseases Evandro Chagas (INI), Fiocruz, Rio de Janeiro, Brazil
| | - Rowena Alves Coelho
- Mycology Laboratory, National Institute of Infectious Diseases Evandro Chagas (INI), Fiocruz, Rio de Janeiro, Brazil
| | - Rodrigo Almeida-Paes
- Mycology Laboratory, National Institute of Infectious Diseases Evandro Chagas (INI), Fiocruz, Rio de Janeiro, Brazil
| | - Sandro Antônio Pereira
- Laboratory of Clinical Research on Dermatozoonosis in Domestic Animals, National Institute of Infectious Diseases Evandro Chagas (INI), FIOCRUZ, Rio de Janeiro, Brazil
| | - Luciana Trilles
- Mycology Laboratory, National Institute of Infectious Diseases Evandro Chagas (INI), Fiocruz, Rio de Janeiro, Brazil
| | - Wieland Meyer
- Mycology Laboratory, National Institute of Infectious Diseases Evandro Chagas (INI), Fiocruz, Rio de Janeiro, Brazil.,Molecular Mycology Research Laboratory, Westmead Institute for Medical Research, Sydney, NSW, Australia
| | - Bodo Wanke
- Mycology Laboratory, National Institute of Infectious Diseases Evandro Chagas (INI), Fiocruz, Rio de Janeiro, Brazil
| | - Márcia Dos Santos Lazéra
- Mycology Laboratory, National Institute of Infectious Diseases Evandro Chagas (INI), Fiocruz, Rio de Janeiro, Brazil
| | - Isabella Dib Ferreira Gremião
- Laboratory of Clinical Research on Dermatozoonosis in Domestic Animals, National Institute of Infectious Diseases Evandro Chagas (INI), FIOCRUZ, Rio de Janeiro, Brazil
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Campos MP, Figueiredo FB, Morgado FN, Renzetti ARDS, de Souza SMM, Pereira SA, Rodrigues-Da-Silva RN, Lima-Junior JDC, De Luca PM. Corrigendum: Leishmania infantum Virulence Factor A2 Protein: Linear B-Cell Epitope Mapping and Identification of Three Main Linear B-Cell Epitopes in Vaccinated and Naturally Infected Dogs. Front Immunol 2018; 9:2245. [PMID: 30349528 PMCID: PMC6194485 DOI: 10.3389/fimmu.2018.02245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 09/10/2018] [Indexed: 11/13/2022] Open
Abstract
[This corrects the article DOI: 10.3389/fimmu.2018.01690.].
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Affiliation(s)
- Monique Paiva Campos
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil.,National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil
| | | | - Fernanda Nazaré Morgado
- Laboratório de Pesquisa em Leishmanioses, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Alinne Rangel Dos Santos Renzetti
- National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil.,Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Sara Maria Marques de Souza
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil.,National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil
| | - Sandro Antônio Pereira
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil.,National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil
| | | | - Josué Da Costa Lima-Junior
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Paula Mello De Luca
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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10
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Campos MP, Figueiredo FB, Morgado FN, Renzetti ARDS, de Souza SMM, Pereira SA, Rodrigues-Da-Silva RN, Lima-Junior JDC, De Luca PM. Leishmania infantum Virulence Factor A2 Protein: Linear B-Cell Epitope Mapping and Identification of Three Main Linear B-Cell Epitopes in Vaccinated and Naturally Infected Dogs. Front Immunol 2018; 9:1690. [PMID: 30090101 PMCID: PMC6068230 DOI: 10.3389/fimmu.2018.01690] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 07/10/2018] [Indexed: 12/18/2022] Open
Abstract
In Brazil, canine visceral leishmaniasis (CVL) is caused by Leishmania infantum, presenting a broad spectrum of clinical manifestations. Dogs are the main parasite reservoir in urban areas and canine cases precede human infection. Currently, A2 protein based Leish-Tec® vaccine is the only vaccine commercially available against CVL in Brazil. Considering that the main screening and confirmatory tests of canine infection are serological, it is possible that the antibody response elicited after vaccination interfere with diagnosis, leading to the inability to distinguish between vaccinated and infected animals. In order to identify the specific B-cell response induced after vaccination, A2 protein sequence was screened for main linear B-cell epitopes using in silico prediction (Bepipred) and immunological confirmation by ELISA. Three amino acid sequences were described as potential B-cell epitopes (SV11-SAEPHKAAVDV, PP16-PQSVGPLSVGPQSVGP, and VQ34-VGPLSVGPQSVGPLSVGPLSVGPQAVGPLSVGPQ). Specific IgG ELISAs were performed in sera of 12 immunized dogs living in non-endemic areas, followed for up to 1 year after immunization. The results were compared with those obtained in a group of 10 symptomatic and 10 asymptomatic CVL dogs. All predicted epitopes were confirmed as linear B-cell epitopes broadly recognized by sera from studied dogs. Total IgG ELISAs demonstrated distinct patterns of response between peptides in the immunized and CVL groups. VQ34 peptide was recognized by the majority of sera from vaccinated and symptomatic dogs, and increases after vaccination. PP16 induced low levels of specific IgG that increased 1 year after immunization. Interestingly, a low frequency of reactivity was found against SV11 in naturally infected dogs (symptomatic and asymptomatic), while 83.3% of vaccinated dogs presented positive responses 1 year after immunization. The two animals in the vaccinated group that did not respond to SV11 1 year after immunization presented positive serology both 30 days and 6 months after immunization. In summary, we identified three main linear B-cell epitopes in A2 based vaccine. Moreover, the humoral response against SV11 presented marked differences between infected and Leish-Tec vaccinated dogs, and should be further investigated, in large trials, to confirm its potential as a serological marker able to distinguish between infected and vaccinated dogs.
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Affiliation(s)
- Monique Paiva Campos
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil.,National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil
| | | | - Fernanda Nazaré Morgado
- Laboratório de Pesquisa em Leishmanioses, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Alinne Rangel Dos Santos Renzetti
- National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil.,Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Sara Maria Marques de Souza
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil.,National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil
| | - Sandro Antônio Pereira
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil.,National Institute of Infectology Evandro Chagas-Fiocruz, Rio de Janeiro, Brazil
| | | | - Josué Da Costa Lima-Junior
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Paula Mello De Luca
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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Gremião IDF, Pereira SA, Rodrigues AM, Figueiredo FB, Nascimento Júnior A, Santos IBD, Schubach TMP. Tratamento cirúrgico associado à terapia antifúngica convencional na esporotricose felina. ACTA SCI VET 2018. [DOI: 10.22456/1679-9216.15281] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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da Rocha RFDB, Schubach TMP, Pereira SA, Dos Reis ÉG, Carvalho BW, Gremião IDF. Refractory feline sporotrichosis treated with itraconazole combined with potassium iodide. J Small Anim Pract 2018; 59:720-721. [PMID: 29708594 DOI: 10.1111/jsap.12852] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 12/15/2017] [Accepted: 12/20/2017] [Indexed: 11/30/2022]
Affiliation(s)
- R F D B da Rocha
- Laboratory of Clinical Research on Dermatozoonosis in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases/Oswaldo Cruz Foundation (Fiocruz), 21045-900 Rio de Janeiro, Brazil
| | - T M P Schubach
- Laboratory of Clinical Research on Dermatozoonosis in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases/Oswaldo Cruz Foundation (Fiocruz), 21045-900 Rio de Janeiro, Brazil
| | - S A Pereira
- Laboratory of Clinical Research on Dermatozoonosis in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases/Oswaldo Cruz Foundation (Fiocruz), 21045-900 Rio de Janeiro, Brazil
| | - É G Dos Reis
- Laboratory of Clinical Research on Dermatozoonosis in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases/Oswaldo Cruz Foundation (Fiocruz), 21045-900 Rio de Janeiro, Brazil
| | - B W Carvalho
- Laboratory of Clinical Research on Dermatozoonosis in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases/Oswaldo Cruz Foundation (Fiocruz), 21045-900 Rio de Janeiro, Brazil
| | - I D F Gremião
- Laboratory of Clinical Research on Dermatozoonosis in Domestic Animals, Evandro Chagas National Institute of Infectious Diseases/Oswaldo Cruz Foundation (Fiocruz), 21045-900 Rio de Janeiro, Brazil
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13
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Silva JN, Miranda LHM, Menezes RC, Gremião IDF, Oliveira RVC, Vieira SMM, Conceição-Silva F, Ferreiro L, Pereira SA. Comparison of the Sensitivity of Three Methods for the Early Diagnosis of Sporotrichosis in Cats. J Comp Pathol 2018; 160:72-78. [PMID: 29729723 DOI: 10.1016/j.jcpa.2018.03.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 01/22/2018] [Accepted: 03/13/2018] [Indexed: 10/17/2022]
Abstract
Sporotrichosis is caused by species of fungi within the Sporothrix schenckii complex that infect man and animals. In Rio de Janeiro, Brazil, an epidemic has been observed since 1998, with most of the cases being related to transmission from infected cats. Although the definitive diagnosis of feline sporotrichosis is made by fungal culture, cytopathological and histopathological examinations are used routinely, because the long culture period may delay treatment onset. However, alternative methods are desirable in cases of low fungal burden. Immunohistochemistry (IHC) has been described as a sensitive method for diagnosing human and canine sporotrichosis, but there are no reports of its application to cats. The aim of this study was to analyse the sensitivity of cytopathological examination (Quick Panoptic method), histopathology (Grocott silver stain) and anti-Sporothrix IHC by blinded comparisons, using fungal culture as the reference standard. Samples were collected from 184 cats with sporotrichosis that exhibited skin ulcers. The sensitivities of Grocott silver stain, cytopathological examination and IHC were 91.3%, 87.0% and 88.6%, respectively. Grocott silver stain showed the best performance. IHC showed high sensitivity, as did cytopathological examination and these may be considered as alternative methodologies. When the three methods were combined, the diagnosis was established in 180 (97.8%) out of 184 cases. Taken together, these findings indicate the need to implement these methods as routine tools for the early diagnosis of sporotrichosis in cats, notably when fungal culture is not available.
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Affiliation(s)
- J N Silva
- Laboratório de Micologia, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9090, Agronomia, Porto Alegre, Rio Grande do Sul, Brazil; Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (Fiocruz), Av. Brasil 4365, Manguinhos, Rio de Janeiro, Brazil
| | - L H M Miranda
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (Fiocruz), Av. Brasil 4365, Manguinhos, Rio de Janeiro, Brazil.
| | - R C Menezes
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (Fiocruz), Av. Brasil 4365, Manguinhos, Rio de Janeiro, Brazil
| | - I D F Gremião
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (Fiocruz), Av. Brasil 4365, Manguinhos, Rio de Janeiro, Brazil
| | - R V C Oliveira
- Laboratório de Epidemiologia Clínica, INI/Fiocruz, Av. Brasil 4036/201A, Manguinhos, Rio de Janeiro, Brazil
| | - S M M Vieira
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (Fiocruz), Av. Brasil 4365, Manguinhos, Rio de Janeiro, Brazil
| | - F Conceição-Silva
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz/Fiocruz, Av. Brasil 4365/Pavilhão 26/406C, Manguinhos, Rio de Janeiro, Brazil
| | - L Ferreiro
- Laboratório de Micologia, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9090, Agronomia, Porto Alegre, Rio Grande do Sul, Brazil
| | - S A Pereira
- Laboratório de Pesquisa Clínica em Dermatozoonoses em Animais Domésticos, Instituto Nacional de Infectologia Evandro Chagas (INI), Fundação Oswaldo Cruz (Fiocruz), Av. Brasil 4365, Manguinhos, Rio de Janeiro, Brazil
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14
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15
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Pereira SA, Jerônimo GT, Marchiori NC, Oliveira HM, Jesus GFA, Schmidt EC, Bouzon ZL, Vieira FN, Martins ML, Mouriño JLP. Tadpoles fed supplemented diet with probiotic bacterium isolated from the intestinal tract of bullfrog Lithobates catesbeianus: Haematology, cell activity and electron microscopy. Microb Pathog 2017; 114:255-263. [PMID: 29174701 DOI: 10.1016/j.micpath.2017.11.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 10/17/2017] [Accepted: 11/22/2017] [Indexed: 11/24/2022]
Abstract
The aim of this study is to select and isolate autochthonous bacteria with probiotic potential for use in a supplemented diet for bullfrog tadpoles, Lithobates catesbeianus. A total of 20 strains of lactic acid bacteria were isolated. Nine out of these were used in the following in vitro assays: antagonism against pathogenic bacteria (ANT), antimicrobial activity from extracellular compounds (MIC), tolerance to bile salts (TBS), pH reduction, protease production, sensitivity to antimicrobial tetracycline, cell viability, growth rate and doubling time. Using these data was defined an ideotype (ideal strain) based on the best results. Distances were estimated with the Mahalanobis (D2) test, and the best candidates, presenting the shortest ideotype distances, were considered to be used. The best strain was found to be Lactobacillus plantarum because it presented 10.00 ± 0.50 mm of ANT against Aeromonas hydrophila, 3.99 ± 0.01 of MIC independent of pathogenic bacteria, 85.07 ± 0.01 of TBS, 4.20 ± 0.02 of final pH, 17.67 ± 1.15 of protease production, 13.50 ± 2.00 sensitivity to antimicrobial tetracycline, 9.36 ± 0.04 of cell viability, 0.20 ± 0.00 of growth rate and 3.46 ± 0.00 doubling time. Therefore this probiotic candidate was then supplemented (2.045 ± 1.07 × 107 colony forming unities. g-1) into the diets of bullfrog tadpoles for a period of 42 days. At the end of the trial, samples of blood and intestines were collected to verify the haematological alterations and the intestinal morphology using transmission and scanning electron microscopy. Tadpoles fed the supplemented diet showed successful lactic acid bacterium colonisation, an increased number of circulating thrombocytes, monocytes, eosinophil and LG-PAS+ and also an increase in the length and density of intestinal microvilli. This study shows the feasibility of using probiotics isolated from farmed bullfrogs as a supplement in the diets of tadpoles, providing a promising alternative for modulating the health of these animals.
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Affiliation(s)
- S A Pereira
- AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brazil.
| | - G T Jerônimo
- AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brazil; Aquatic Organisms Health Laboratory, Post Graduate in Aquaculture, Nilton Lins University, Av. Nilton Lins 3259, 69058-030, Manaus, AM, Brazil
| | - N C Marchiori
- EPAGRI - Company of Agricultural Research and Rural Extension of Santa Catarina, Rua Joaquim Garcia, s/n, 88340-000, Camboriú, SC, Brazil
| | - H M Oliveira
- AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brazil
| | - G F A Jesus
- AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brazil
| | - E C Schmidt
- Department of Cell Biology, Embryology and Genetics (BEG), Central Laboratory of Electron Microscopy, UFSC, Florianópolis, Brazil
| | - Z L Bouzon
- Department of Cell Biology, Embryology and Genetics (BEG), Central Laboratory of Electron Microscopy, UFSC, Florianópolis, Brazil
| | - F N Vieira
- LCM - Marine Shrimp Laboratory, Microbiology Section, Aquaculture Department, UFSC, Beco dos Coroas 503, Barra da Lagoa, 88061-600, Florianópolis, SC, Brazil
| | - M L Martins
- AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brazil
| | - J L P Mouriño
- AQUOS - Aquatic Organisms Health Laboratory, Aquaculture Department, Federal University of Santa Catarina (UFSC), Rod. Admar Gonzaga 1346, 88040-900, Florianópolis, SC, Brazil
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Charneira C, Grilo NM, Pereira SA, Godinho ALA, Monteiro EC, Marques MM, Antunes AMM. N-terminal valine adduct from the anti-HIV drug abacavir in rat haemoglobin as evidence for abacavir metabolism to a reactive aldehyde in vivo. Br J Pharmacol 2013; 167:1353-61. [PMID: 22725138 DOI: 10.1111/j.1476-5381.2012.02079.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND PURPOSE The aim of this study was to obtain evidence for the activation of the nucleoside reverse transcriptase inhibitor abacavir to reactive aldehyde metabolites in vivo. Protein haptenation by these reactive metabolites may be a factor in abacavir-induced toxic events. EXPERIMENTAL APPROACH The formation of N-terminal valine adducts from the abacavir-derived aldehydes was investigated in the haemoglobin of Wistar rats treated with eight daily doses (120 mg·kg(-1)) of abacavir. The analyses were conducted by high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry upon comparison with synthetic standards. KEY RESULTS An N-terminal valine haemoglobin adduct derived from an α,β-unsaturated aldehyde metabolite of abacavir was identified in vivo for the first time. CONCLUSIONS AND IMPLICATIONS This preliminary work on abacavir metabolism provides the first unequivocal evidence for the formation of an α,β-unsaturated aldehyde metabolite in vivo and of its ability to form haptens with proteins. The methodology described herein can be used to assess the formation of this metabolite in human samples and has the potential to become a valuable pharmacological tool for mechanistic studies of abacavir toxicity. In fact, the simplicity of the method suggests that the abacavir adduct with the N-terminal valine of haemoglobin could be used to investigate abacavir-induced toxicity for accurate risk/benefit estimations.
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Affiliation(s)
- C Charneira
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade Técnica de Lisboa, Lisboa, Portugal
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17
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Kromdijk W, Pereira SA, Rosing H, Mulder JW, Beijnen JH, Huitema ADR. Development and validation of an assay for the simultaneous determination of zidovudine, abacavir, emtricitabine, lamivudine, tenofovir and ribavirin in human plasma using liquid chromatography-tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 919-920:43-51. [PMID: 23411018 DOI: 10.1016/j.jchromb.2013.01.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 12/18/2012] [Accepted: 01/06/2013] [Indexed: 10/27/2022]
Abstract
This paper describes the development and validation of an assay for the simultaneous quantification of the antiviral and antiretroviral drugs zidovudine, abacavir, emtricitabine, lamivudine, tenofovir and ribavirin in human plasma using liquid chromatography coupled to tandem mass spectrometry. Sample pretreatment consisted of protein precipitation with 0.1% (v/v) formic acid in methanol, evaporation and reconstitution. Chromatographic separation was performed on a Synergy Polar reversed phase C18 column (150 mm × 2.0 mm ID, particle size 4 μm) using a stepwise gradient with 0.1% (v/v) formic acid in water and 0.1% (v/v) formic acid in methanol at a flow rate of 300 μL/min. A triple quadrupole mass spectrometer operating in the positive ionization mode was used for drug detection and quantification. Isotopically labeled zidovudine, lamivudine, tenofovir and ribavirin were used as internal standards. The method was validated over a clinical range of 20-2500 ng/mL for zidovudine, lamivudine and tenofovir, 4-500 ng/mL for abacavir and emtricitabine and 160-20,000 ng/mL for ribavirin. The inter and intra-assay accuracies and precisions were between -8.47% and 14.2% for zidovudine, emtricitabine and ribavirin. For abacavir, lamivudine and tenofovir, the inter and intra-assay accuracies and precisions at the lower limit of quantification were between -11.0% and 18.3%, whereas at all other levels these accuracies and precisions were between -11.7% and 12.0%. The described method is suitable for the determination of zidovudine, abacavir, emtricitabine, lamivudine, tenofovir and ribavirin in human plasma in clinical practice to monitor plasma concentrations in selected cases to optimize therapy.
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Affiliation(s)
- W Kromdijk
- Department of Pharmacy & Pharmacology, Slotervaart Hospital, Amsterdam, The Netherlands.
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Pereira AV, Pereira SA, Gremião IDF, Campos MP, Ferreira AMR. Comparison of acetate tape impression with squeezing versus skin scraping for the diagnosis of canine demodicosis. Aust Vet J 2012; 90:448-50. [PMID: 23106326 DOI: 10.1111/j.1751-0813.2012.00994.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2012] [Indexed: 11/30/2022]
Abstract
This study compared the sensitivity of acetate tape impression and skin squeezing with that of deep skin scraping for the diagnosis of demodicosis in dogs. Demodex canis was detected in 100% of acetate tape impressions obtained after skin squeezing and in 90% of deep skin scrapings. There was a significant difference (P < 0.001) between the techniques in the total number of mites detected. Acetate tape impression with skin squeezing was found to be more sensitive than deep skin scraping and is an alternative diagnostic method for canine demodicosis.
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Affiliation(s)
- A V Pereira
- Laboratory of Clinical Research on Dermatozoonosis in Domestic Animals, Evandro Chagas Clinical Research Institute/Oswaldo Cruz Foundation (Fiocruz), Av Brasil, 4365 - Manguinhos, 21045-900, Rio de Janeiro, Brazil.
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Pereira SA, Batuca JR, Caixas U, Branco T, Delgado-Alves J, Germano I, Lampreia F, Monteiro EC. Effect of efavirenz on high-density lipoprotein antioxidant properties in HIV-infected patients. Br J Clin Pharmacol 2010; 68:891-7. [PMID: 20002083 DOI: 10.1111/j.1365-2125.2009.03535.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
WHAT IS ALREADY KNOWN ABOUT THIS SUBJECT * In previous work, we showed a long-term and concentration-dependent beneficial effect of the non-nucleoside reverse transcriptase inhibitor efavirenz (EFV) on high-density lipoproteins (HDL) in human immunodeficiency virus (HIV)-infected patients. * Furthermore, it has been suggested that instead of the current practice of only measuring HDL-chelesterol values, the evaluation of HDL function, namely its antioxidant properties, might be an improved tool for identifying subjects at increased risk for cardiovascular events. * Paraoxonase-1 (PON-1) is an enzyme associated with HDL that is responsible for HDL antioxidant function. WHAT THIS STUDY ADDS * In the present work, we studied the effect of EFV on the activity of PON-1 and showed, for the first time, that EFV-based antiretroviral therapy is associated with a better antioxidant function, i.e. with a higher PON-1 activity. AIMS A long-term and concentration-dependent beneficial effect of efavirenz (EFV) on cholesterol associated with high-density lipoprotein (HDL-c) in human immunodeficiency virus (HIV)-infected patients has been documented. Furthermore, it has been suggested that, instead of the current practice of only measuring HDL-c values, the evaluation of HDL quality might be an improved tool for identifying subjects at increased risk of cardiovascular events. Paraoxonase-1 (PON-1) is an enzyme associated with HDL that is involved in the onset of cardiovascular disease and responsible for HDL antioxidant function. The aim of the present study was to investigate the effect of EFV on the circulating activity of PON-1 in HIV-infected patients. METHODS The patients included were adults with a documented HIV-1 infection, nontreated or treated with antiretroviral regimens including EFV 600 mg once daily as first therapeutic regimen for at least 3 months. The influence of treatment with EFV, HDL-c and CD4 cell count on PON-1 activity was analysed. RESULTS HIV-infected White patients treated with EFV had higher PON-1 activity [77.35 U l(-1) (65.66, 89.04)] (P < 0.05) and higher PON-1 activity : HDL-c ratio [1.88 (1.49, 2.28)] (P < 0.01) than untreated patients. PON-1 activity was higher in Black patients (P < 0.001) and in patients with a CD4 cell count >500 cells ml(-1) (P= 0.0120). CONCLUSIONS EFV-based antiretroviral regimens are associated with HDL particles with a better antioxidant function, i.e. with a higher PON-1 activity. The PON-1 activity of Black patients is higher than that found in Whites regardless of treatment. Ethnicity should be taken into consideration when studying drug effects on PON-1 activity.
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Affiliation(s)
- S A Pereira
- Department of Pharmacology, Faculty of Medical Sciences, New University of Lisbon, Lisbon, Portugal.
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Pereira SA, Passos SRL, Silva JN, Gremião IDF, Figueiredo FB, Teixeira JL, Monteiro PCF, Schubach TMP. Response to azolic antifungal agents for treating feline sporotrichosis. Vet Rec 2010; 166:290-4. [PMID: 20208075 DOI: 10.1136/vr.166.10.290] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The effectiveness and safety of treatment with ketoconazole and itraconazole were compared in 773 sporotrichosis-infected cats over a four-year period (2002 to 2005). Five hundred and ninety-eight cats received oral ketoconazole and 175 received oral itraconazole. Treatment was successful in 238 (30.8 per cent) cats, of which 171 (28.6 per cent) of 598 received 13.5 to 27.0 mg/kg/day ketoconazole and 67 (38.3 per cent) of 175 received 8.3 to 27.7 mg/kg/day itraconazole. Adverse effects were reported in 306 (39.6 per cent) of the cats, 105 (13.6 per cent) died and 430 (55.6 per cent) dropped out of treatment or were still under treatment at the time of data analysis.
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Affiliation(s)
- S A Pereira
- Instituto de Pesquisa Clínica Evandro Chagas, Fundação Oswaldo Cruz, Avenida Brasil, 4365, Manguinhos, Rio de Janeiro, RJ 21040-900, Brazil.
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Affiliation(s)
- C O Honse
- Laboratory of Clinical Research on Dermatozoonosis in Domestic Animals, Evandro Chagas Institute of Clinical Research, Oswaldo Cruz Foundation, Avenida Brasil 4365, Manguinhos, Rio de Janeiro, 21040-900, Brazil.
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Pereira SA, Batuca J, Caixas U, Branco T, Germano I, Lampreia F, Delgado-Alves J, Monteiro EC. HIV and antioxidant lipoprotein-associated effect. Is there a correlation? J Int AIDS Soc 2008. [DOI: 10.1186/1758-2652-11-s1-p96] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Leme LRP, Schubach TMP, Santos IB, Figueiredo FB, Pereira SA, Reis RS, Mello MFV, Ferreira AMR, Quintella LP, Schubach AO. Mycological evaluation of bronchoalveolar lavage in cats with respiratory signs from Rio de Janeiro, Brazil. Mycoses 2007; 50:210-4. [PMID: 17472619 DOI: 10.1111/j.1439-0507.2007.01358.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Twenty-three cats with respiratory signs who had domiciliary contact with cats with sporotrichosis were studied. Sneezing was the predominant extracutaneous sign. Twelve cats had no skin lesions and 11 had ulcerated skin lesions. Mycological culture of material obtained from the nasal cavity, oral cavity, bronchoalveolar lavage (BAL) and skin lesions, when present, was performed for all cats. In the case of autopsy, lung fragments were cultured. Sporothrix schenckii was isolated from four of the 12 cats without skin lesions: BAL (one cat) and oral and/or nasal cavity (three cats). The latter three animals developed nasal and distant skin lesions within the following 2-4 weeks. The cat with S. schenckii isolated from BAL did not develop skin lesions or lower respiratory tract symptoms during the 6 months of follow-up. S. schenckii was isolated from one or more biological samples of all 11 cats with skin lesions: oral cavity (five), nasal cavity (eight), BAL fluid (four), skin lesions (eight), and blood culture (one). No yeast-like structures were observed upon BAL cytology in any of the 23 cats. The results suggest that S. schenckii can cause infection of skin contiguous to the natural facial orifices through colonisation of the mucosal surfaces of the upper airways.
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Affiliation(s)
- L R P Leme
- Serviço de Zoonoses, Instituto de Pesquisa Clínica Evandro Chagas - Fundaçã Oswaldo Cruz, Rio de Janeiro, Brazil.
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da Cruz ACS, Couto BC, Nascimento IA, Pereira SA, Leite MBNL, Bertoletti E, Zagatto P. Estimation of the critical effect level for pollution prevention based on oyster embryonic development toxicity test: the search for reliability. Environ Int 2007; 33:589-95. [PMID: 17064777 DOI: 10.1016/j.envint.2006.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2006] [Revised: 06/11/2006] [Accepted: 09/05/2006] [Indexed: 05/12/2023]
Abstract
In spite of the consideration that toxicity testing is a reduced approach to measure the effects of pollutants on ecosystems, the early-life-stage (ELS) tests have evident ecological relevance because they reflect the possible reproductive impairment of the natural populations. The procedure and validation of Crassostrea rhizophorae embryonic development test have shown that it meets the same precision as other U.S. EPA tests, where EC(50) is generally used as a toxicological endpoint. However, the recognition that EC(50) is not the best endpoint to assess contaminant effects led U.S. EPA to recently suggest EC(25) as an alternative to estimate xenobiotic effects for pollution prevention. To provide reliability to the toxicological test results on C. rhizophorae embryos, the present work aimed to establish the critical effect level for this test organism, based on its reaction to reference toxicants, by using the statistical method proposed by Norberg-King (Inhibition Concentration, version 2.0). Oyster embryos were exposed to graded series of reference toxicants (ZnSO(4) x 7H(2)O; AgNO(3); KCl; CdCl(2)H(2)O; phenol, 4-chlorophenol and dodecyl sodium sulphate). Based on the obtained results, the critical value for C. rhizophorae embryonic development test was estimated as EC(15). The present research enhances the emerging consensus that ELS tests data would be adequate for estimating the chronic safe concentrations of pollutants in the receiving waters. Based on recommended criteria and on the results of the present research, zinc sulphate and 4-chlorophenol have been pointed out, among the inorganic and organic compounds tested, as the best reference toxicants for C. rhizophorae ELS-test.
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Affiliation(s)
- A C S da Cruz
- Institute of Biology, Federal University of Bahia, Brazil
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25
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Paixão JF, Nascimento IA, Pereira SA, Leite MBL, Carvalho GC, Silveira JSC, Rebouças M, Matias GRA, Rodrigues ILP. Estimating the gasoline components and formulations toxicity to microalgae (Tetraselmis chuii) and oyster (Crassostrea rhizophorae) embryos: an approach to minimize environmental pollution risk. Environ Res 2007; 103:365-74. [PMID: 16930589 DOI: 10.1016/j.envres.2006.06.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2006] [Revised: 06/21/2006] [Accepted: 06/26/2006] [Indexed: 05/11/2023]
Abstract
Even though petrochemical contamination frequently occurs in the form of oil spills, it is thought that a greater danger to coastal habitats is posed by chronic petrochemical toxicity associated with urban run-off, in which gasoline water-soluble-fraction (WSF) plays an important role. The hypothesis of the entrepreneurs, who were associated to the scientists uncharged of this research, was that recycled petrochemical waste may provide different gasoline formulations, having different toxic properties; the correlation between the gasoline formulations and their components' toxicological effects might contribute to the reformulation of the products, in such a way that the gasoline generated could be less toxic and less harmful to the environment. The aim of this research was to determine the toxic effects of 14 different types of gasoline (formulated, in accordance with National Petroleum Agency standards, from petrochemical waste), on Tetraselmis chuii (microalgae culture) and Crassostrea rhizophorae (embryos). Microalgae and oyster embryos were exposed to different gasoline formulations water-soluble fractions (WSF) at a range of concentrations (0%, 4.6%, 10.0%, 22.0%, 46.0%, and 100%), for 96 and 24h, respectively. The tests were carried out under controlled conditions. End-points have been CI50-96h (concentration causing 50% growth inhibition in microalgae cultures) and EC50-24h (concentration causing abnormalities on 50% of the exposed embryos). Through these procedures, gasoline formulations, which represent the lowest environmental risk, were selected. Bioassays carried out on the 8 different gasoline components aimed to correlate gasoline toxicity with the toxic potential of its components. The analysis of principal components showed that the C9DI, a mixture of aromatic hydrocarbons of 9 carbon atoms, had the highest level of toxic potential, followed by C9S (a mixture of aromatics with 9-11 carbon atoms) and heavy naphtha. The results showed gasoline formulations 1-4 (monoaromatic hydrocarbons being the most conspicuous components) to be the least toxic, whilst formulations 12-14 (having higher content of C9DI, C9S and naphtha) were found to be the most harmful to organisms. This study led to the identification of the most toxic WSF gasoline components (C9DI and C9S), and to the possibility of developing more eco-compatible gasoline formulations.
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Affiliation(s)
- J F Paixão
- Institute of Biology, Federal University of Bahia, Brazil
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Madeira MF, Schubach A, Schubach TMP, Pacheco RS, Oliveira FS, Pereira SA, Figueiredo FB, Baptista C, Marzochi MCA. Mixed infection with Leishmania (Viannia) braziliensis and Leishmania (Leishmania) chagasi in a naturally infected dog from Rio de Janeiro, Brazil. Trans R Soc Trop Med Hyg 2006; 100:442-5. [PMID: 16257024 DOI: 10.1016/j.trstmh.2005.07.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2005] [Revised: 07/26/2005] [Accepted: 07/26/2005] [Indexed: 11/24/2022] Open
Abstract
We report here the first case of co-infection with Leishmania (Viannia) braziliensis and Leishmania (Leishmania) chagasi in a naturally infected dog from Rio de Janeiro, Brazil. Isoenzyme characterisation identified the parasites isolated in culture from the cutaneous lesion as L. (V.) braziliensis and the isolates from blood and lymph node as L. (L.) chagasi. PCR analysis using specific primers followed by molecular hybridisation for direct Leishmania species identification in tissue fragments confirmed the presence of L. (V.) braziliensis DNA in the cutaneous lesion and of L. (L.) chagasi DNA in spleen and popliteal lymph node fragments. This report emphasises the importance of identification of Leishmania species infecting seropositive dogs in endemic areas, and the consequent re-assessment of control and epidemiological surveillance measures for the control of leishmaniasis, as is the case in Brazil.
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Affiliation(s)
- M F Madeira
- Serviço de Parasitologia, Instituto de Pesquisa Clínica Evandro Chagas--FIOCRUZ, Av. Brasil 4365, 21045-900 Rio de Janeiro, RJ, Brazil.
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Schubach TM, Figueiredo FB, Pereira SA, Madeira MF, Santos IB, Andrade MV, Cuzzi T, Marzochi MC, Schubach A. American cutaneous leishmaniasis in two cats from Rio de Janeiro, Brazil: first report of natural infection with Leishmania (Viannia) braziliensis. Trans R Soc Trop Med Hyg 2004; 98:165-7. [PMID: 15024926 DOI: 10.1016/s0035-9203(03)00040-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
We describe the isolation of Leishmania (Viannia) braziliensis from two female cats with American cutaneous leishmaniasis in Rio de Janeiro, Brazil. The isolates were identified as L. (V.) braziliensis by isoenzyme electrophoresis.
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Affiliation(s)
- T M Schubach
- Serviço de Zoonoses, Instituto de Pesquisa Clínica Evandro Chagas-FIOCRUZ, Av. Brasil 4365, 21045-900 Rio de Janeiro, RJ, Brazil.
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Santos LL, Amaro T, Pereira SA, Lameiras CR, Lopes P, Bento MJ, Oliveira J, Criado B, Lopes CS. Expression of cell-cycle regulatory proteins and their prognostic value in superficial low-grade urothelial cell carcinoma of the bladder. Eur J Surg Oncol 2003; 29:74-80. [PMID: 12559081 DOI: 10.1053/ejso.2002.1371] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AIMS Cell-cycle regulatory proteins are important indicators in determining progression trough the cell-cycle and progression to invasive cancer in patients presenting with superficial bladder cancer. We performed an immunohistochemical study in order to evaluate the prognostic value of the expression of p16, p27, pRb, p53 and Ki-67 in superficial grade I and II papillary urothelial cell carcinoma of the bladder. METHODS p16, p27, p53, pRb and Ki-67 immunoexpression was studied in 14 pTa, 35 pT1a and 7 pT1b bladder tumours at presentation and at recurrence of their tumours. The recurrence-free survival and the progression-free survival were analysed according to these regulatory cell-cycle proteins expression. RESULTS For survival in univariate analysis a high Ki-67 labelling index was a poor prognostic factor for recurrence-free and progression-free survival (P=0.0014 and P=0.012, respectively). Ki-67 labelling index was also an independent recurrence-free survival prognostic factor (P=0.0005). The p16, p27, p53 and pRb immunoreactivity was not significantly associated with recurrence or progression rate in this group of bladder carcinomas. CONCLUSIONS These data suggest that the Ki-67 labelling index can be a reliable marker in predicting recurrence and/or progression in superficial low-grade bladder carcinomas and may be relevant in planning adjuvant therapy.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Biomarkers, Tumor/biosynthesis
- Carcinoma, Papillary/diagnosis
- Carcinoma, Papillary/metabolism
- Carcinoma, Papillary/mortality
- Carcinoma, Transitional Cell/diagnosis
- Carcinoma, Transitional Cell/metabolism
- Carcinoma, Transitional Cell/mortality
- Cell Cycle Proteins/biosynthesis
- Cyclin-Dependent Kinase Inhibitor p16/biosynthesis
- Disease Progression
- Disease-Free Survival
- Female
- Follow-Up Studies
- Fungal Proteins
- Humans
- Immunohistochemistry
- Ki-67 Antigen/biosynthesis
- Male
- Middle Aged
- Multivariate Analysis
- Neoplasm Recurrence, Local/diagnosis
- Neoplasm Recurrence, Local/metabolism
- Neoplasm Recurrence, Local/mortality
- Neoplasm Staging
- Portugal
- Prognosis
- Serine Endopeptidases/biosynthesis
- Severity of Illness Index
- Sex Factors
- Time Factors
- Tumor Suppressor Protein p53/biosynthesis
- Urinary Bladder Neoplasms/diagnosis
- Urinary Bladder Neoplasms/metabolism
- Urinary Bladder Neoplasms/mortality
- Urothelium/metabolism
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Affiliation(s)
- L L Santos
- Surgical Oncology Department, Portuguese Institute of Oncology, Rua Dr Bernardino de Almeida, 4200 Porto, Portugal.
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Madalena C, Pereira SA, Rosário C, Santos M, Barbot C. [Type 1 neurofibromatosis: the experience of a hospital in Porto, Portugal]. Rev Neurol 2001; 33:794-5. [PMID: 11784975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- C Madalena
- Servicio de Neuropediatría, Servicio de Dermatologia, Hospital de Crianças Maria Pia, Porto, Portugal
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Costa E, Cabeda JM, Vieira E, Pinto R, Pereira SA, Ferraz L, Santos R, Barbot J. Glucose-6-phosphate dehydrogenase aveiro: a de novo mutation associated with chronic nonspherocytic hemolytic anemia. Blood 2000; 95:1499-501. [PMID: 10666231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
Abstract
Glucose-6-phosphate dehydrogenase (G6PD) deficiency is a common X-linked enzyme abnormality. The clinical phenotype is variable but often predictable from the molecular lesion. Class I variants (the most severe forms of the disease) cluster within exon 10, in a region that, at the protein level, is believed to be involved in dimerization. Here we describe a de novo mutation (C269Y) of a new class I variant (G6PD Aveiro) that maps to exon 8. Mutant and normal alleles were found in both hematopoietic and buccal cells, indicating the presence of mosaicism. The available model of the protein predicts that this lesion lies in proximity to the dimer interface of the molecule. A possible mechanism to explain the severity of the defect is proposed. (Blood. 2000;95:1499-1501)
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Affiliation(s)
- E Costa
- Serviço de Hematologia Clínica, Hospital de Crianças Maria Pia, Porto, Portugal.
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Abstract
During the course of systemic inflammatory reactions and chronic venous congestion, the documented phenomenon of increased spleen size is respectively called reactional hyperplasia and congestive splenomegaly. In Chagas' disease, the inflammatory process observed in the heart of chronically infected patients can result in heart failure and ultimately in congestive failure. In order to evaluate the spleen response to both inflammatory and cardiac processes, in this retrospective study we compare the weight of spleens from normal and chagasic patients, with or without congestive failure. Information about patient age, sex, race and spleen weight was collected from autopsy reports. Eighty-eight selected cases were divided into four groups: 1) chagasic patients with congestive failure, 2) chagasic patients without congestive failure, 3) non-chagasic patients with congestive failure, 4) non-chagasic patients without congestive failure. The average age was 44.9 +/- 15.4 years, 53.4% were Caucasians and 70.5% were males, and no significant difference in these parameters was observed between the four groups. The spleen weight for the groups presenting congestive failure was 183.7 +/- 85.9 g for chagasic and 206.3 +/- 101.0 g for non-chagasic patients; for the groups without congestive failure the average spleen weight was 173.7 +/- 118.9 g for the chagasic and 117.2 +/- 52.0 g for non-chagasic patients. The spleen weight was significantly higher for the chagasic patients without congestive failure when compared to the non-chagasic group without congestive failure. These results suggest that the inflammatory component in Chagas' disease plays an important role in the increase of spleen weight together with hemodynamic alterations arising from congestive heart failure.
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Affiliation(s)
- S A Pereira
- Disciplina de Patologia Geral, Universidade de Uberaba, Faculdade de Medicina do Triângulo Mineiro
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Ferreira G, Freitas S, Pereira SA, Martins I, Tavares E, Vilarinho L. 3-Hydroxy-3-methylglutaric aciduria in a girl with trisomy 21. Eur J Pediatr 1996; 155:1068. [PMID: 8956952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Abstract
The primary step in the aromatic amino-acid biosynthetic pathway in Saccharomyces cerevisiae is catalyzed by two redundant isozymes of 3-deoxy-d-arabinoheptulosonate-7-phosphate (DAHP) synthase, either of which alone is sufficient to permit growth on synthetic complete media lacking aromatic acids (SC-Aro). The activity of one isozyme (encoded by the ARO3 gene) is feedback-inhibited by phenylalanine, whereas the activity of the other isozyme (encoded by the ARO4 gene) is feedback-inhibited by tyrosine. Transcription of both genes is controlled by GCN4. We previously cloned the ARO3 gene from the opportunistic pathogen Candida albicans and found that: (1) it can complement an aro3 aro4 double mutation in S. cerevisiae, an effect inhibited by excess phenylalanine; and (2) its expression is induced in response to amino-acid deprivation, consistent with the presence of two putative GCN4-responsive promoter elements (Pereira and Livi 1993, 1995). To determine whether other DAHP synthases exist in C. albicans, we have constructed a homozygous aro3-deletion mutant strain. Such a mutant was found to be phenotypically Aro+, i. e., capable of normal growth on SC-Aro media, suggesting the presence of at least one additional isozyme. To confirm this result, a 222-bp DNA fragment was amplified by the polymerase chain reaction (PCR) from genomic DNA prepared from the homozygous aro3-deletion mutant, using a degenerate primer based on a conserved N-terminal region of Aro3p plus a degenerate comeback primer encoding a conserved region of the protein that lies within the deleted portion of the gene. The nucleotide sequence of this PCR fragment predicts a 74-amino acid DAHP synthase-related protein which shows strong homology to Aro3p from S. cerevisiae and C. albicans, but even greater homology (78% identity) to S. cerevisiae Aro4p. We conclude that cells of C. albicans contain a second Aro4p-related DAHP synthase.
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Affiliation(s)
- S A Pereira
- Department of Molecular Biology, Lehigh University, Bethlehem, PA 18105, USA
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Abstract
The control of amino acid and purine biosynthesis in the yeast Saccharomyces cerevisiae is mediated by the transcriptional activator GCN4. We previously identified the presence of two putative GCN4 responsive elements (GCREs) in the promoter sequence of the Candida albicans ARO3 gene, which encodes an enzyme in the aromatic amino acid pathway. We now show that amino acid deprivation results in a dramatic rise in the steady-state level of ARO3-specific mRNA, indicative of a GCN-like pathway in C. albicans.
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Affiliation(s)
- S A Pereira
- Department of Molecular Biology, Lehigh University, Bethlehem, PA 18015, USA
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Abstract
In Saccharomyces cerevisiae, the primary step in the aromatic (ARO) amino acid (aa) biosynthetic pathway is catalyzed by two isozymes of 3-deoxy-D-arabinoheptulosonate-7-phosphate synthase (DAHPS). The activity of one DAHPS isozyme (encoded by the ARO3 gene) is feedback inhibited by phenylalanine, whereas the other (encoded by the ARO4 gene) is inhibited by tyrosine. The expression of these genes is also regulated at the transcriptional level by the general control activator GCN4. We took advantage of the high degree of aa sequence homology between DAHPSs from several species to isolate ARO3 homologues from the pathogenic yeast Candida albicans. An ARO3/ARO4-specific sequence was generated from C. albicans genomic DNA by polymerase chain reaction amplification and used as a probe to screen a C. albicans cDNA library. A 1.3-kb cDNA clone was isolated and sequenced. The cDNA contains a long open reading frame predicting a 368-aa protein with significant homology to known DAHPSs, including both the S. cerevisiae ARO3 and ARO4 products (68.5% and 58.5% identity, respectively). Northern analysis of yeast and mycelial poly(A)+ RNA revealed equivalent expression of a 1.3-kb transcript in both cell types. A genomic clone was isolated by cross-hybridization, and analysis of the 5' untranslated region revealed the presence of a putative GCN4-binding site. This clone complemented an aro3 mutation in S. cerevisiae; functional complementation was inhibited by the presence of excess phenylalanine (but not tyrosine) in the growth medium, confirming that the cloned gene is the C. albicans homologue of ARO3.
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Affiliation(s)
- S A Pereira
- Department of Molecular Biology, Lehigh University, Bethlehem, PA 18015
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