1
|
Gastaldi Guerrieri C, Teixeira Gonçalves M, Ferreira da Silva A, Souza Dos Santos AL, Dos Santos KV, Cruz Spano L. Remarkable antibiofilm activity of ciprofloxacin, cefoxitin, and tobramycin, by themselves or in combination, against enteroaggregative Escherichia coli in vitro. Diagn Microbiol Infect Dis 2023; 107:116048. [PMID: 37657231 DOI: 10.1016/j.diagmicrobio.2023.116048] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 03/29/2023] [Revised: 07/11/2023] [Accepted: 07/28/2023] [Indexed: 09/03/2023]
Abstract
Enteroaggregative Escherichia coli (EAEC), a biofilm forming pathogen, causes acute and persistent diarrhea worldwide, requiring antimicrobial therapy in severe or persistent cases. To determine the susceptibility of EAEC biofilm to antimicrobials, as single-agent or combined therapy, biofilm formation was investigated using EAEC clinical strains via peg lid. Of the 78 initially analyzed strains, 35 could form biofilms, 15 (42.9%; 15/35) were resistant to at least 1 tested antimicrobial and 20 (57.1%) were susceptible to all of them in the planktonic form. The biofilms of these susceptible strains were challenged against chosen antimicrobials, and displayed resistance to tetracycline, trimethoprim-sulfamethoxazole, chloramphenicol, ampicillin, cefotaxime, ceftriaxone (85%-100%), tobramycin (25%), cefoxitin (20%), and ciprofloxacin (5%). Moreover, ciprofloxacin combined with ampicillin, and tobramycin eradicated the biofilm of 2 of the 4 tested strains. Ciprofloxacin, cefoxitin, and tobramycin maintained their activity well against EAEC biofilm, suggesting their possible effectiveness to treat diarrhea caused by biofilm-forming EAEC strains.
Collapse
Affiliation(s)
- Caroline Gastaldi Guerrieri
- Department of Pathology, Health Sciences Center, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil.
| | - Mariana Teixeira Gonçalves
- Department of Pathology, Health Sciences Center, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Anazi Ferreira da Silva
- Department of Pathology, Health Sciences Center, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - André Luis Souza Dos Santos
- Department of General Microbiology, Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Kênia Valéria Dos Santos
- Department of Pathology, Health Sciences Center, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| | - Liliana Cruz Spano
- Department of Pathology, Health Sciences Center, Federal University of Espírito Santo, Vitória, Espírito Santo, Brazil
| |
Collapse
|
2
|
Dos Santos ALS. Tropical Infectious Diseases of Global Significance: Insights and Perspectives. Trop Med Infect Dis 2023; 8:462. [PMID: 37888590 PMCID: PMC10611159 DOI: 10.3390/tropicalmed8100462] [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: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/28/2023] Open
Abstract
Neglected tropical diseases (NTDs) are indeed a group of illnesses (Table 1) affecting hundreds of millions of individuals living in tropical and sub-tropical geographical regions of the globe, particularly in socioeconomic vulnerability areas where access to adequate sanitation, a clean water supply, and healthcare is limited [...].
Collapse
Affiliation(s)
- André Luis Souza Dos Santos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
| |
Collapse
|
3
|
Costa GLD, Negri M, Miranda RPRD, Corrêa-Moreira D, Pinto TCA, Ramos LDS, Ferreira DG, Salomão B, Fumian TM, Mannarino CF, Prado T, Miagostovich MP, Santos ALSD, Oliveira MME. Candida palmioleophila: A New Emerging Threat in Brazil? J Fungi (Basel) 2023; 9:770. [PMID: 37504758 PMCID: PMC10381623 DOI: 10.3390/jof9070770] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 07/05/2023] [Accepted: 07/14/2023] [Indexed: 07/29/2023] Open
Abstract
Human activity directly or indirectly causes climate change, promoting changes in the composition of the atmosphere. This change is beyond the variation of the natural climate. In this manner, climate change could create an environmental pressure which is enough to trigger new fungal diseases. In addition to climate alterations, the onset of the COVID-19 pandemic has also been associated with the emergence of fungal pathogens. Fungi showed that an inability to grow at high temperatures limits the capacity of fungi to infect mammals. However, fungi can develop thermotolerance, gradually adapting to rising temperatures due to climate change, and generating a greater number of disease-causing organisms. In the present study, we reported the detection and identification of Candida palmioleophila isolates recovered from raw sewage samples in Niteroi city, Rio de Janeiro State, Brazil, during a monitoring program for measuring SARS-CoV-2 presence and concentration. Using polyphasic taxonomy to identify the species and evaluating some virulence aspects of this species, such as biofilm formation and extracellular enzyme production, our data highlight this species as a possible emerging pathogen in Brazil, especially in the pandemic context.
Collapse
Affiliation(s)
- Gisela Lara da Costa
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institution (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro 21040-900, Brazil
| | - Melyssa Negri
- Medical Mycology Laboratory, Clinical Analysis Department, State University of Maringá, Maringá 87020-900, Brazil
| | - Rodrigo Prado Rodrigues de Miranda
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institution (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro 21040-900, Brazil
- Insect Biochemistry and Physiology Laboratory, Oswaldo Cruz Institution (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro 21040-900, Brazil
| | - Danielly Corrêa-Moreira
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institution (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro 21040-900, Brazil
| | - Tatiana Castro Abreu Pinto
- Laboratory of Pathogenic Cocci and Microbiota, Paulo de Goés Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro 21941-853, Brazil
| | - Livia de Souza Ramos
- Laboratory for Advanced Studies of Emerging and Resistant Microorganisms, Federal University of Rio de Janeiro, Rio de Janeiro 21941-853, Brazil
| | - Deisiany Gomes Ferreira
- Medical Mycology Laboratory, Clinical Analysis Department, State University of Maringá, Maringá 87020-900, Brazil
| | - Bruna Salomão
- Laboratory of Microbiology, Federal Hospital of Andaraí, Rio de Janeiro 20541-170, Brazil
| | - Tulio Machado Fumian
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21040-360, Brazil
| | - Camille Ferreira Mannarino
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21040-360, Brazil
| | - Tatiana Prado
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21040-360, Brazil
| | - Marise Pereira Miagostovich
- Laboratory of Comparative and Environmental Virology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21040-360, Brazil
| | - André Luis Souza Dos Santos
- Laboratory for Advanced Studies of Emerging and Resistant Microorganisms, Federal University of Rio de Janeiro, Rio de Janeiro 21941-853, Brazil
| | - Manoel Marques Evangelista Oliveira
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institution (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro 21040-900, Brazil
| |
Collapse
|
4
|
Coelho RA, Figueiredo-Carvalho MHG, Almeida-Silva F, de Souza Rabello VB, de Souza GR, Sangenito LS, Joffe LS, Santos ALSD, da Silva Lourenço MC, Rodrigues ML, Almeida-Paes R. Repurposing Benzimidazoles against Causative Agents of Chromoblastomycosis: Albendazole Has Superior In Vitro Activity Than Mebendazole and Thiabendazole. J Fungi (Basel) 2023; 9:753. [PMID: 37504741 PMCID: PMC10381309 DOI: 10.3390/jof9070753] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/06/2023] [Accepted: 07/12/2023] [Indexed: 07/29/2023] Open
Abstract
Chromoblastomycosis (CBM) is a neglected human implantation mycosis caused by several dematiaceous fungal species. Currently available therapy is usually associated with physical methods, especially surgery, and with high refractoriness. Therefore, drug discovery for CBM is essential. Drug repositioning is a strategy used to facilitate the discovery of new treatments for several diseases. The aim of this study was to discover substances with antifungal activity against CBM agents from a collection of drugs previously approved for use in human diseases. A screening was performed with the NIH Clinical Collection against Fonsecaea pedrosoi. Ten substances, with clinical applicability in CBM, inhibited fungal growth by at least 60%. The minimum inhibitory concentration (MIC) of these substances was determined against other CBM agents, and the benzimidazoles albendazole, mebendazole and thiabendazole presented the lowest MIC values. The selectivity index, based on MIC and cytotoxicity of these substances, revealed albendazole to be more selective. To investigate a possible synergism of this benzimidazole with itraconazole and terbinafine, the chequerboard method was used. All interactions were classified as indifferent. Our current results suggest that benzimidazoles have repositioning potential against CBM agents. Albendazole seems to be the most promising, since it presented the highest selectivity against all dematiaceous fungi tested.
Collapse
Affiliation(s)
- Rowena Alves Coelho
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, INI/Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
| | | | - Fernando Almeida-Silva
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, INI/Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
| | - Vanessa Brito de Souza Rabello
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, INI/Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
| | - Gabriela Rodrigues de Souza
- Plataforma de Bioensaios RPT 11B, Instituto Nacional de Infectologia Evandro Chagas, INI/Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
| | - Leandro Stefano Sangenito
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goés, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro, Nilópolis 26530-060, RJ, Brazil
| | - Luna Sobrino Joffe
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY 11792, USA
| | - André Luis Souza Dos Santos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goés, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- Rede Micologia RJ, Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro 21941-901, RJ, Brazil
| | - Maria Cristina da Silva Lourenço
- Plataforma de Bioensaios RPT 11B, Instituto Nacional de Infectologia Evandro Chagas, INI/Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
| | - Marcio L Rodrigues
- Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba 81350-010, PR, Brazil
- Instituto de Microbiologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, RJ, Brazil
| | - Rodrigo Almeida-Paes
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, INI/Fiocruz, Rio de Janeiro 21040-900, RJ, Brazil
- Rede Micologia RJ, Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro 21941-901, RJ, Brazil
| |
Collapse
|
5
|
Reis CC, Freitas SP, Lorentino CMA, Fagundes TDSF, da Matta VM, Dos Santos ALS, Moreira DDL, Kunigami CN, Jung EP, Ribeiro LDO. Bioproducts from Passiflora cincinnata Seeds: The Brazilian Caatinga Passion Fruit. Foods 2023; 12:2525. [PMID: 37444263 DOI: 10.3390/foods12132525] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/09/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
The present work aimed to obtain bioproducts from Passiflora cincinnata seeds, the Brazilian Caatinga passion fruit, as well as to determine their physical, chemical and biological properties. The seeds were pressed in a continuous press to obtain the oil, which showed an oxidative stability of 5.37 h and a fatty profile rich in linoleic acid. The defatted seeds were evaluated for the recovery of antioxidant compounds by a central rotation experimental design, varying temperature (32-74 °C), ethanol (13-97%) and solid-liquid ratio (1:10-1:60 m/v). The best operational condition (74 °C, 58% ethanol, 1:48) yielded an extract composed mainly of lignans, which showed antioxidant capacity and antimicrobial activity against Gram-positive and Gram-negative bacteria. The microencapsulation of linoleic acid-rich oil through spray drying has proven to be an effective method for protecting the oil. Furthermore, the addition of the antioxidant extract to the formulation increased the oxidative stability of the product to 30% (6.97 h), compared to microencapsulated oil without the addition of the antioxidant extract (5.27 h). The microparticles also exhibited favorable technological characteristics, such as low hygroscopicity and high water solubility. Thus, it was possible to obtain three bioproducts from the Brazilian Caatinga passion fruit seeds: the oil rich in linoleic acid (an essential fatty acid), antioxidant extract from the defatted seeds and the oil microparticles added from the antioxidant extract.
Collapse
Affiliation(s)
- Carolina Cruzeiro Reis
- Laboratory of Vegetable Oil, Federal University of Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Suely Pereira Freitas
- Laboratory of Vegetable Oil, Federal University of Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Carolline Margot Albanez Lorentino
- Laboratory for Advanced Studies of Emerging and Resistant Microorganisms, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | | | | | - André Luis Souza Dos Santos
- Laboratory for Advanced Studies of Emerging and Resistant Microorganisms, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Davyson de Lima Moreira
- Laboratory of Natural Products, Rio de Janeiro Botanical Garden Research Institute, Rio de Janeiro 22460-030, Brazil
- Post-Graduation Program in Translational Drugs and Medicines, Institute of Technology in Medicines, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil
| | - Claudete Norie Kunigami
- Laboratory of Organic and Inorganic Chemical Analysis, National Institute of Technology, Rio de Janeiro 20081-312, Brazil
| | - Eliane Przytyk Jung
- Laboratory of Organic and Inorganic Chemical Analysis, National Institute of Technology, Rio de Janeiro 20081-312, Brazil
| | - Leilson de Oliveira Ribeiro
- Laboratory of Organic and Inorganic Chemical Analysis, National Institute of Technology, Rio de Janeiro 20081-312, Brazil
| |
Collapse
|
6
|
Nikoomanesh F, Falahatinejad M, Černáková L, Dos Santos ALS, Mohammadi SR, Rafiee M, Rodrigues CF, Roudbary M. Combination of Farnesol with Common Antifungal Drugs: Inhibitory Effect against Candida Species Isolated from Women with RVVC. Medicina (Kaunas) 2023; 59:medicina59040743. [PMID: 37109701 PMCID: PMC10143126 DOI: 10.3390/medicina59040743] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/29/2023] [Accepted: 03/31/2023] [Indexed: 04/29/2023]
Abstract
Background and Objectives: Vulvovaginal candidiasis (VVC) is a mucous membrane infection, with an increased rate of antifungal resistance of Candida species. In this study, the in vitro efficacy of farnesol alone or in combination with traditional antifungals was assessed against resistant Candida strains recovered from women with VVC. Materials and Methods: Eighty Candida isolates were identified by multiplex polymerase chain reaction (PCR), and the antifungal susceptibility to amphotericin B (AMB), fluconazole (FLU), itraconazole (ITZ), voriconazole (VOR), clotrimazole (CTZ), and farnesol was tested by the standard microdilution method. The combinations of farnesol with each antifungal were calculated based on the fractional inhibitory concentration index (FICI). Result: Candida glabrata was the predominant species (48.75%) isolated from vaginal discharges, followed by C. albicans (43.75%), C. parapsilosis (3.75%), a mixed infection of C. albicans and C. glabrata (2.5%) and C. albicans and C. parapsilosis (1%). C. albicans and C. glabrata isolates had lower susceptibility to FLU (31.4% and 23.0%, respectively) and CTZ (37.1% and 33.3%, respectively). Importantly, there was "synergism" between farnesol-FLU and farnesol-ITZ against C. albicans and C. parapsilosis (FICI = 0.5 and 0.35, respectively), reverting the original azole-resistant profile. Conclusion: These findings indicate that farnesol can revert the resistance profile of azole by enhancing the activity of FLU and ITZ in resistant Candida isolates, which is a clinically promising result.
Collapse
Affiliation(s)
- Fatemeh Nikoomanesh
- Infectious Disease Research Center, Birjand University of Medical Sciences, Birjand 9717853577, Iran
| | - Mahsa Falahatinejad
- Department of Medical Mycology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran 14115111, Iran
| | - Lucia Černáková
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, 842 15 Bratislava, Slovakia
| | - André Luis Souza Dos Santos
- Department of General Microbiology, Microbiology Institute Paulo de Góes, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-901, RJ, Brazil
| | - Shahla Roudbar Mohammadi
- Department of Medical Mycology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran 14115111, Iran
| | - Mitra Rafiee
- Department of Immunology, School of Medicine, Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand 9717853577, Iran
| | - Célia Fortuna Rodrigues
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
- TOXRUN-Toxicology Research Unit, Cooperativa de Ensino Superior Politécnico e Universitário-CESPU, 4585-116 Gandra PRD, Portugal
| | - Maryam Roudbary
- Department of Parasitology and Mycology, School of Medicine, Iran University of Medical Sciences, Tehran 1449614535, Iran
| |
Collapse
|
7
|
Almeida MA, Bernardes-Engemann AR, Coelho RA, Lugones CJG, de Andrade IB, Corrêa-Junior D, de Oliveira SSC, Dos Santos ALS, Frases S, Rodrigues ML, Valente RH, Zancopé-Oliveira RM, Almeida-Paes R. Mebendazole Inhibits Histoplasma capsulatum In Vitro Growth and Decreases Mitochondrion and Cytoskeleton Protein Levels. J Fungi (Basel) 2023; 9:jof9030385. [PMID: 36983553 PMCID: PMC10051957 DOI: 10.3390/jof9030385] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/13/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Histoplasmosis is a frequent mycosis in people living with HIV/AIDS and other immunocompromised hosts. Histoplasmosis has high rates of mortality in these patients if treatment is unsuccessful. Itraconazole and amphotericin B are used to treat histoplasmosis; however, both antifungals have potentially severe pharmacokinetic drug interactions and toxicity. The present study determined the minimal inhibitory and fungicidal concentrations of mebendazole, a drug present in the NIH Clinical Collection, to establish whether it has fungicidal or fungistatic activity against Histoplasma capsulatum. Protein extracts from H. capsulatum yeasts, treated or not with mebendazole, were analyzed by proteomics to understand the metabolic changes driven by this benzimidazole. Mebendazole inhibited the growth of 10 H. capsulatum strains, presenting minimal inhibitory concentrations ranging from 5.0 to 0.08 µM. Proteomics revealed 30 and 18 proteins exclusively detected in untreated and mebendazole-treated H. capsulatum yeast cells, respectively. Proteins related to the tricarboxylic acid cycle, cytoskeleton, and ribosomes were highly abundant in untreated cells. Proteins related to the nitrogen, sulfur, and pyrimidine metabolisms were enriched in mebendazole-treated cells. Furthermore, mebendazole was able to inhibit the oxidative metabolism, disrupt the cytoskeleton, and decrease ribosomal proteins in H. capsulatum. These results suggest mebendazole as a drug to be repurposed for histoplasmosis treatment.
Collapse
Affiliation(s)
- Marcos Abreu Almeida
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil
| | - Andrea Reis Bernardes-Engemann
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil
| | - Rowena Alves Coelho
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil
| | - Camila Jantoro Guzman Lugones
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil
| | - Iara Bastos de Andrade
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Dario Corrêa-Junior
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - Simone Santiago Carvalho de Oliveira
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goés, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
| | - André Luis Souza Dos Santos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goés, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
- Rede Micologia RJ, Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro 21941-901, Brazil
| | - Susana Frases
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil
- Rede Micologia RJ, Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro 21941-901, Brazil
| | | | - Richard Hemmi Valente
- Laboratório de Toxinologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil
| | - Rosely Maria Zancopé-Oliveira
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil
| | - Rodrigo Almeida-Paes
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil
- Rede Micologia RJ, Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro 21941-901, Brazil
| |
Collapse
|
8
|
Vargas Rigo G, Gomes Cardoso F, Bongiorni Galego G, da Rosa DF, Souza Dos Santos AL, Tasca T. Metallopeptidases as Key Virulence Attributes of Clinically Relevant Protozoa: New Discoveries, Perspectives, and Frontiers of Knowledge. Curr Protein Pept Sci 2023:CPPS-EPUB-130026. [PMID: 36876838 DOI: 10.2174/1389203724666230306153001] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 01/18/2023] [Accepted: 01/30/2023] [Indexed: 03/07/2023]
Abstract
This article provides a comprehensive review of several subclasses of metallo-type peptidases expressed by the main clinically relevant protozoa, including Plasmodium spp., Toxoplasma gondii, Cryptosporidium spp., Leishmania spp., Trypanosoma spp., Entamoeba histolytica, Giardia duodenalis, and Trichomonas vaginalis. These species comprise a diverse group of unicellular eukaryotic microorganisms responsible for widespread and severe human infections. Metallopeptidases, defined as hydrolases with activity mediated by divalent metal cation, play important roles in the induction and maintenance of parasitic infections. In this context, metallopeptidases can be considered veritable virulence factors in protozoa with direct/indirect participation in several key pathophysiological processes, including adherence, invasion, evasion, excystation, central metabolism, nutrition, growth, proliferation, and differentiation. Indeed, metallopeptidases have become an important and valid target to search for new compounds with chemotherapeutic purposes. The present review aims to gather updates regarding metallopeptidase subclasses, exploring their participation in protozoa virulence as well as investigating the similarity of peptidase sequences through bioinformatics techniques in order to discover clusters of greater relevance for the development of new broad antiparasitic molecules.
Collapse
Affiliation(s)
- Graziela Vargas Rigo
- Faculdade de Farmacia, Universidade Federal do Rio Grande do Sul, Avenida Ipiranga, 2752
| | - Fernanda Gomes Cardoso
- Faculdade de Farmacia, Universidade Federal do Rio Grande do Sul, Avenida Ipiranga, 2752
| | | | | | | | - Tiana Tasca
- Faculdade de Farmacia, Universidade Federal do Rio Grande do Sul, Avenida Ipiranga, 2752
| |
Collapse
|
9
|
Ramos LDS, Silva LN, de Mello TP, Frota HF, Branquinha MH, Dos Santos ALS. Prospective Medicines against the Widespread, Emergent and Multidrug-Resistant Opportunistic Fungal Pathogen Candida auris: A Breath of Hope. Curr Top Med Chem 2022; 22:1297-1305. [PMID: 35619311 DOI: 10.2174/1568026622666220520153748] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/24/2022] [Accepted: 04/29/2022] [Indexed: 11/22/2022]
Abstract
The emergence of the pathogen Candida auris is a real concern worldwide, especially due to its multidrug resistance profile, besides the difficulties in establishing the correct identification by conventional laboratory methods and its capacity of causing outbreaks in healthcare settings. The limited arsenal of available antifungal drugs, coupled with the lack of momentum for the development of new reagents, represent a challenge in the management of such a pathogen. In this perspective, we have focused on discussing new, promising treatment options for C. auris infections. These novel drugs include an antifungal agent already approved for medical use in the United States of America, compounds that are already in clinical trials and those with potential for repurposing use against this important fungal pathogen.
Collapse
Affiliation(s)
- Lívia de Souza Ramos
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Laura Nunes Silva
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Thaís Pereira de Mello
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Heloísa Freire Frota
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Programa de Pós-Graduação em Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marta Helena Branquinha
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Rede Micologia RJ - FAPERJ
| | - André Luis Souza Dos Santos
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Rede Micologia RJ - FAPERJ.,Programa de Pós-Graduação em Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| |
Collapse
|
10
|
Sangenito LS, d'Avila-Levy CM, Branquinha MH, Santos ALSD. Repositioning drug strategy against Trypanosoma cruzi: lessons learned from HIV aspartyl peptidase inhibitors. Mem Inst Oswaldo Cruz 2022; 117:e210386. [PMID: 35293428 PMCID: PMC8925306 DOI: 10.1590/0074-02760210386] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 01/14/2022] [Indexed: 11/22/2022] Open
Abstract
Chagas disease (CD) is an old neglected problem that affects more than 6 million people through 21 endemic countries in Latin America. Despite being responsible for more than 12 thousand deaths per year, the disease disposes basically of two drugs for its treatment, the nitroimidazole benznidazole and the nitrofuran nifurtimox. However, these drugs have innumerous limitations that greatly reduce the chances of cure. In Brazil, for example, only benznidazole is available to treat CD patients. Therefore, some proof-of-concept phase II clinical trials focused on improving the current treatment with benznidazole, also comparing it with repositioned drugs or combining them. Indeed, repositioning already marketed drugs in view of combating neglected tropical diseases is a very interesting approach in the context of decreased time for approval, better treatment options and low cost for development and implementation. After the introduction of human immunodeficiency virus aspartyl peptidase inhibitors (HIV-PIs) in the treatment of acquired immune deficiency syndrome (AIDS), the prevalence and incidence of parasitic, fungal and bacterial co-infections suffered a marked reduction, making these HIV-PIs attractive for drug repositioning. In this line, the present perspective presents the promising and beneficial data concerning the effects of HIV-PIs on the clinically relevant forms of Trypanosoma cruzi (i.e., trypomastigotes and amastigotes) and also highlights the ultrastructural and physiological targets for the HIV-PIs on this parasite. Therefore, we raise the possibility that HIV-PIs could be considered as alternative treatment options in the struggle against CD.
Collapse
Affiliation(s)
- Leandro Stefano Sangenito
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Rio de Janeiro, RJ, Brasil
| | - Claudia Masini d'Avila-Levy
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Estudos Integrados em Protozoologia, Rio de Janeiro, RJ, Brasil
| | - Marta Helena Branquinha
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Rio de Janeiro, RJ, Brasil
| | - André Luis Souza Dos Santos
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Rio de Janeiro, RJ, Brasil.,Universidade Federal do Rio de Janeiro, Instituto de Química, Programa de Pós-Graduação em Bioquímica, Rio de Janeiro, RJ, Brasil
| |
Collapse
|
11
|
Santos ALSD. Brazilian scientists: much to learn from the microbial biofilm lifestyle (a resistant, resilient, well-orchestrated, and dynamic organization). Cien Saude Colet 2022; 27:947-950. [PMID: 35293471 DOI: 10.1590/1413-81232022273.22982021] [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: 12/14/2021] [Accepted: 12/24/2021] [Indexed: 11/21/2022] Open
Abstract
In the present perspective, some parallels are drawn between a career as a scientist in Brazil and the ability of microorganisms to form a biofilm. Do these connections really exist? Definitely the answer is YES. Over billions of years, microbial biofilms have evolved in order to form a cohesive, well-structured, organized and dynamic community, which is characterized by its resistant/resilient profile to several environmental stressors. Adapting to constant change is a necessary attribute for survival and perpetuation of all live organisms, which are key signatures present in the hereditary molecule. Brazilian scientists are faced with many stressful situations along their journey in academia, which requires constant adaptability, reorganization and, above all, resilience. Can we take some lessons from what we know about the biofilm lifestyle developed by microorganisms? The answer is yes!
Collapse
Affiliation(s)
- André Luis Souza Dos Santos
- Laboratório de Estudos Avançados de Microrganimos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro. Centro de Ciências da Saúde bloco bloco E, subsolo, sala 05, Cidade Universitária, Ilha do Fundão. 21941-902 Rio de Janeiro RJ Brasil.
| |
Collapse
|
12
|
da Costa LJ, Pereira MM, de Souza Ramos L, de Mello TP, Silva LN, Branquinha MH, Dos Santos ALS. Protease Inhibitors as Promising Weapons against COVID-19: Focus on Repurposing of Drugs used to Treat HIV and HCV Infections. Curr Top Med Chem 2021; 21:1429-1438. [PMID: 34727849 DOI: 10.2174/1568026621666210701093407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/18/2021] [Accepted: 06/01/2021] [Indexed: 11/22/2022]
Abstract
As a part of the efforts to quickly develop pharmaceutical treatments for COVID-19 through repurposing existing drugs, some researchers around the world have combined the recently released crystal structure of SARS-CoV-2 Mpro in complex with a covalently bonded inhibitor with virtual screening procedures employing molecular docking approaches. In this context, protease inhibitors (PIs) clinically available and currently used to treat infectious diseases, particularly viral ones, are relevant sources of promising drug candidates to inhibit the SARS-CoV-2 Mpro, a key viral enzyme involved in crucial events during its life cycle. In the present perspective, we summarized the published studies showing the promising use of HIV and HCV PIs as potential repurposing drugs against the SARS-CoV-2 Mpro.
Collapse
Affiliation(s)
- Luciana Jesus da Costa
- Department of Virology, Institute of Microbiology Paulo de Goes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Matheus Mendonça Pereira
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, Aveiro, Portugal
| | - Lívia de Souza Ramos
- Department of General Microbiology, Institute of Microbiology Paulo de Goes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Thaís Pereira de Mello
- Department of General Microbiology, Institute of Microbiology Paulo de Goes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Laura Nunes Silva
- Department of General Microbiology, Institute of Microbiology Paulo de Goes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marta Helena Branquinha
- Department of General Microbiology, Institute of Microbiology Paulo de Goes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - André Luis Souza Dos Santos
- Department of General Microbiology, Institute of Microbiology Paulo de Goes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| |
Collapse
|
13
|
da Silva PHA, Garcia AS, Alves FA, Dos Santos ALS, Sodré CL. COVID-19 and Diabetes Mellitus: Potential Metabolic Associations. Curr Top Med Chem 2021; 21:929-936. [PMID: 34126900 DOI: 10.2174/1568026621666210612025938] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 11/22/2022]
Abstract
The COVID-19 pandemic turned the SARS-CoV-2 into the main target of scientific research all around the world. Many advances have already been made, but there is still a long way to go to solve the molecular mechanisms related to the process of the SARS-CoV-2 infection, as well as the particularities of the disease, its course and the complex host-pathogen relationships. However, a lot has been theorized and associated with COVID-19, like the worst prognosis of the disease among individuals with some comorbidities, like diabetes mellitus. In this perspective, diabetic patients are repeatedly associated with more severe cases of COVID-19 when compared to non-diabetic patients. Even though ACE2 (angiotensin-converting enzyme 2) was recognized as the host cell receptor for both binding and entering of SARS-CoV-2 particles, it was also pointed out that this enzyme plays an important protective role against pulmonary damage. Therefore, paradoxically as it may seem, the low baseline level of this receptor in diabetics is directly linked to a more expressive loss of ACE2 protective effect, which could be one of the possible factors for the worst prognosis of COVID-19. Still, COVID-19 may also have a diabetogenic effect. From this point of view, the main topics that will be highlighted are (i) the mechanism of the viral entry, with special attention to the cellular receptor (ACE2) and the viral binding protein (spike), (ii) the relationship among the renin-angiotensin system, the infection process and the patients' prognosis, (iii) the glucose control and the medicines used in this event, and (iv) a brief analysis on diabetes triggered by COVID-19.
Collapse
Affiliation(s)
- Pedro Henrique Abreu da Silva
- Departamento de Biologia Celular e Molecular (GCM), Instituto de Biologia (IB), Universidade Federal Fluminense (UFF), Niteroi-RJ, Brazil
| | - Andressa Santos Garcia
- Departamento de Biologia Celular e Molecular (GCM), Instituto de Biologia (IB), Universidade Federal Fluminense (UFF), Niteroi-RJ, Brazil
| | - Fábio Aguiar Alves
- Laboratorio de Epidemiologia Molecular e Biotecnologia (LEMB), Programa de Pos-Graduacao em Patologia, Programa de Pos-Graduacao em Microbiologia e Parasitologia, Universidade Federal Fluminense (UFF), Niteroi-RJ, Brazil
| | - André Luis Souza Dos Santos
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Cátia Lacerda Sodré
- Departamento de Biologia Celular e Molecular (GCM), Instituto de Biologia (IB), Universidade Federal Fluminense (UFF), Niteroi-RJ, Brazil
| |
Collapse
|
14
|
Roudbary M, Vahedi-Shahandashti R, Santos ALSD, Roudbar Mohammadi S, Aslani P, Lass-Flörl C, Rodrigues CF. Biofilm formation in clinically relevant filamentous fungi: a therapeutic challenge. Crit Rev Microbiol 2021; 48:197-221. [PMID: 34358430 DOI: 10.1080/1040841x.2021.1950121] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Biofilms are highly-organized microbial communities attached to a biotic or an abiotic surface, surrounded by an extracellular matrix secreted by the biofilm-forming cells. The majority of fungal pathogens contribute to biofilm formation within tissues or biomedical devices, leading to serious and persistent infections. The clinical significance of biofilms relies on the increased resistance to conventional antifungal therapies and suppression of the host immune system, which leads to invasive and recurrent fungal infections. While different features of yeast biofilms are well-described in the literature, the structural and molecular basis of biofilm formation of clinically related filamentous fungi has not been fully addressed. This review aimed to address biofilm formation in clinically relevant filamentous fungi.
Collapse
Affiliation(s)
- Maryam Roudbary
- Department of Parasitology and Mycology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - André Luis Souza Dos Santos
- Department of General Microbiology, Microbiology Institute Paulo de Góes, Federal University of Rio de Janeiro (UFRJ), Brazil
| | | | - Peyman Aslani
- Department of Parasitology and Mycology, Faculty of Medicine, Aja University of Medical Sciences, Tehran, Iran
| | - Cornelia Lass-Flörl
- Institute of Hygiene and Medical Microbiology, Medical University Innsbruck, Innsbruck, Austria
| | - Célia F Rodrigues
- LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Porto, Portugal
| |
Collapse
|
15
|
Ghasemishahrestani Z, Melo Mattos LM, Tilli TM, Santos ALSD, Pereira MD. Pieces of the Complex Puzzle of Cancer Cell Energy Metabolism: An Overview of Energy Metabolism and Alternatives for Targeted Cancer Therapy. Curr Med Chem 2021; 28:3514-3534. [PMID: 32814521 DOI: 10.2174/0929867327999200819123357] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 07/17/2020] [Accepted: 07/22/2020] [Indexed: 11/22/2022]
Abstract
Over the past decades, several advances in cancer cell biology have led to relevant details about a phenomenon called the 'Warburg effect'. Currently, it has been accepted that the Warburg effect is not compatible with all cancer cells, and thus the process of aerobic glycolysis is now challenged by the knowledge of a large number of cells presenting mitochondrial function. The energy metabolism of cancer cells is focused on the bioenergetic and biosynthetic pathways in order to meet the requirements of rapid proliferation. Changes in the metabolism of carbohydrates, amino acids and lipids have already been reported for cancer cells and this might play an important role in cancer progression. To the best of our knowledge, these changes are mainly attributed to genetic reprogramming which leads to the transformation of a healthy into a cancerous cell. Indeed, several enzymes that are highly relevant for cellular energy are targets of oncogenes (e.g. PI3K, HIF1, and Myc) and tumor suppressor proteins (e.g. p53). As a consequence of extensive studies on cancer cell metabolism, some new therapeutic strategies have appeared that aim to interrupt the aberrant metabolism, in addition to influencing genetic reprogramming in cancer cells. In this review, we present an overview of cancer cell metabolism (carbohydrate, amino acid, and lipid), and also describe oncogenes and tumor suppressors that directly affect the metabolism. We also discuss some of the potential therapeutic candidates which have been designed to target and disrupt the main driving forces associated with cancer cell metabolism and proliferation.
Collapse
Affiliation(s)
- Zeinab Ghasemishahrestani
- Departamento de Bioquimica, Instituto de Quimica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Larissa Maura Melo Mattos
- Departamento de Bioquimica, Instituto de Quimica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tatiana Martins Tilli
- Centro de Desenvolvimento Tecnologico em Saude, Fundacao Oswaldo Cruz, Rio de Janeiro, Brazil
| | - André Luis Souza Dos Santos
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcos Dias Pereira
- Departamento de Bioquimica, Instituto de Quimica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| |
Collapse
|
16
|
Seabra G, Ventura Mendes RF, Dos Santos Amorim LFV, Peregrino IV, Branquinha MH, Dos Santos ALS, Nunes APF. Azithromycin Use in COVID-19 Patients: Implications on the Antimicrobial Resistance. Curr Top Med Chem 2021; 21:677-683. [PMID: 34028347 DOI: 10.2174/156802662108210319145317] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Gabriela Seabra
- Laboratorio de Resistencia Bacteriana (RESBAC), Departamento de Microbiologia, Centro de Ciencias da Saude (CCS), Universidade Federal do Espirito Santo (UFES), Vitoria, Brazil
| | - Roberta Ferreira Ventura Mendes
- Laboratorio de Resistencia Bacteriana (RESBAC), Departamento de Microbiologia, Centro de Ciencias da Saude (CCS), Universidade Federal do Espirito Santo (UFES), Vitoria, Brazil
| | - Luiz Felipe Vieira Dos Santos Amorim
- Laboratorio de Resistencia Bacteriana (RESBAC), Departamento de Microbiologia, Centro de Ciencias da Saude (CCS), Universidade Federal do Espirito Santo (UFES), Vitoria, Brazil
| | - Ingrid Vianez Peregrino
- Laboratorio de Resistencia Bacteriana (RESBAC), Departamento de Microbiologia, Centro de Ciencias da Saude (CCS), Universidade Federal do Espirito Santo (UFES), Vitoria, Brazil
| | - Marta Helena Branquinha
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - André Luis Souza Dos Santos
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Ana Paula Ferreira Nunes
- Laboratorio de Resistencia Bacteriana (RESBAC), Departamento de Microbiologia, Centro de Ciencias da Saude (CCS), Universidade Federal do Espirito Santo (UFES), Vitoria, Brazil
| |
Collapse
|
17
|
Ennes-Vidal V, Pitaluga AN, Britto CFDPDC, Branquinha MH, Santos ALSD, Menna-Barreto RFS, d'Avila-Levy CM. Expression and cellular localisation of Trypanosoma cruzi calpains. Mem Inst Oswaldo Cruz 2020; 115:e200142. [PMID: 33053076 PMCID: PMC7552305 DOI: 10.1590/0074-02760200142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 09/09/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Calpains are present in almost all organisms and comprise a family of calcium-dependent cysteine peptidases implicated in crucial cellular functions. Trypanosoma cruzi, the causative agent of Chagas disease, presents an expansion on this gene family with unexplored biological properties. OBJECTIVES Here, we searched for calpains in the T. cruzi genome, evaluated the mRNA levels, calpain activity and the protein expression and determined the cellular localisation in all three parasite life cycle forms. METHODS/FINDINGS Sixty-three calpain sequences were identified in T. cruzi CL Brener genome, with fourteen domain arrangements. The comparison of calpain mRNA abundance by quantitative polymerase chain reaction (qPCR) revealed seven up-regulated sequences in amastigotes and/or bloodstream trypomastigotes and five in epimastigotes. Western Blotting analysis revealed seven different molecules in the three parasite forms, and one amastigote-specific, while no proteolytic activity could be detected. Flow cytometry assays revealed a higher amount of intracellular calpains in amastigotes and/or trypomastigotes in comparison to epimastigotes. Finally, ultrastructural analysis revealed the presence of calpains in the cytoplasm, vesicular and plasma membranes of the three parasite forms, and in the paraflagellar rod in trypomastigotes. CONCLUSION Calpains are differentially expressed and localised in the T. cruzi life cycle forms. This study adds data on the calpain occurrence and expression pattern in T. cruzi.
Collapse
Affiliation(s)
- Vítor Ennes-Vidal
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Estudos Integrados em Protozoologia, Rio de Janeiro, RJ, Brasil
| | - André Nóbrega Pitaluga
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Biologia Molecular de Parasitas e Vetores, Rio de Janeiro, RJ, Brasil
| | | | - Marta Helena Branquinha
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Rio de Janeiro, RJ, Brasil
| | - André Luis Souza Dos Santos
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes, Rio de Janeiro, RJ, Brasil.,Universidade Federal do Rio de Janeiro, Instituto de Química, Programa de Pós-Graduação em Bioquímica, Rio de Janeiro, RJ, Brasil
| | | | - Claudia Masini d'Avila-Levy
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Estudos Integrados em Protozoologia, Rio de Janeiro, RJ, Brasil
| |
Collapse
|
18
|
Staudt A, Duarte PF, Amaral BPD, Peixoto Andrade BCDO, Simas NK, Correa Ramos Leal I, Sangenito LS, Santos ALSD, de Oliveira D, Junges A, Cansian RL, Paroul N. Biological properties of functional flavoring produced by enzymatic esterification of citronellol and geraniol present in Cymbopogon winterianus essential oil. Nat Prod Res 2020; 35:5981-5987. [PMID: 32840398 DOI: 10.1080/14786419.2020.1810032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The chemical composition and biological properties of citronella essential oil were modified by enzymatic esterification reaction of the major monoterpenic alcohols with cinnamic acid. The almost complete conversion of geraniol and citronellol present in the citronella (Cymbopogon winterianus) essential oil, into geranyl (99%) and citronellyl (98%) cinnamates was obtained after 48 hours of reaction using a molar ratio of 3:1 (cinnamic acid/alcohol), lipase concentration (Novozym 435) of 15% (w/w) and 70 °C. The esterified oil showed higher antimicrobial activity against Staphylococcus aureus bacteria resistant to oxacillin and penicillin and also greater larvicidal activity against Aedes aegypti larvae compared to unesterified oil. The results concerning the evaluation of toxicity against Artemia salina and cytotoxicity against monkey kidney epithelial cells also showed the superiority of the esterified oil.
Collapse
Affiliation(s)
- Amanda Staudt
- Food Engineering Department, Universidade Regional Integrada do Alto Uruguai e das Missões-URI Erechim, Erechim, RS, Brazil.,Laboratory of Natural Products and Biological Assays - LaProNEB, Food and Natural Products Department, Pharmacy Faculty, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
| | - Patrícia Fonseca Duarte
- Food Engineering Department, Universidade Regional Integrada do Alto Uruguai e das Missões-URI Erechim, Erechim, RS, Brazil
| | - Bruna Paes do Amaral
- Laboratory of Natural Products and Biological Assays - LaProNEB, Food and Natural Products Department, Pharmacy Faculty, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
| | - Bárbara Carolina de Oliveira Peixoto Andrade
- Laboratory of Natural Products and Biological Assays - LaProNEB, Food and Natural Products Department, Pharmacy Faculty, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
| | - Naomi Kato Simas
- Laboratory of Natural Products and Biological Assays - LaProNEB, Food and Natural Products Department, Pharmacy Faculty, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
| | - Ivana Correa Ramos Leal
- Laboratory of Natural Products and Biological Assays - LaProNEB, Food and Natural Products Department, Pharmacy Faculty, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
| | - Leandro Stefano Sangenito
- Laboratory of Advanced Studies of Emerging and Resistant Microorganisms, Department of General Microbiology, Paulo de Góes Institute of Microbiology, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
| | - André Luis Souza Dos Santos
- Laboratory of Advanced Studies of Emerging and Resistant Microorganisms, Department of General Microbiology, Paulo de Góes Institute of Microbiology, Universidade Federal do Rio de Janeiro-UFRJ, Rio de Janeiro, Brazil
| | - Débora de Oliveira
- Department of Chemical and Food Engineering, Universidade Federal de Santa Catarina-UFSC, Florianópolis, SC, Brazil
| | - Alexander Junges
- Food Engineering Department, Universidade Regional Integrada do Alto Uruguai e das Missões-URI Erechim, Erechim, RS, Brazil
| | - Rogério Luis Cansian
- Food Engineering Department, Universidade Regional Integrada do Alto Uruguai e das Missões-URI Erechim, Erechim, RS, Brazil
| | - Natalia Paroul
- Food Engineering Department, Universidade Regional Integrada do Alto Uruguai e das Missões-URI Erechim, Erechim, RS, Brazil
| |
Collapse
|
19
|
Dobler L, Ferraz HC, Araujo de Castilho LV, Sangenito LS, Pasqualino IP, Souza Dos Santos AL, Neves BC, Oliveira RR, Guimarães Freire DM, Almeida RV. Environmentally friendly rhamnolipid production for petroleum remediation. Chemosphere 2020; 252:126349. [PMID: 32443257 DOI: 10.1016/j.chemosphere.2020.126349] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 01/25/2020] [Accepted: 02/25/2020] [Indexed: 06/11/2023]
Abstract
Biosurfactants have potential applications in the remediation of petroleum-contaminated sites. Several strategies can be used to reduce the production costs of these surfactants and make the process more environmentally friendly. In this study, we combined some of these strategies to produce the rhamnolipid-type biosurfactant, including the use of the genetically modified strain Pseudomonas aeruginosa-estA, an industrial coproduct as a carbon source, a simple and low-cost medium, and a simple downstream process. The process resulted in a high yield (17.6 g L-1), even using crude glycerin as the carbon source, with substrate in product conversion factor (YRML/s) of 0.444. The cell-free supernatant (CFS) was not toxic to Artemia salina and selected mammalian cell lineages, suggesting that it can be used directly in the environment without further purification steps. Qualitative analysis showed that CFS has excellent dispersion in the oil-displacement test, emulsifying (IE24 = 65.5%), and tensoactive properties. When salinity, temperature and pressure were set to seawater conditions, the values for interfacial tension between crude oil and water were below 1.0 mN m-1. Taken together, these results demonstrate that it is possible to obtain a nontoxic crude rhamnolipid product, with high productivity, to replace petroleum-based surfactants in oil spill cleanups and other environmental applications.
Collapse
Affiliation(s)
- Leticia Dobler
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
| | - Helen Conceição Ferraz
- Instituto Alberto Luiz Coimbra de Pós Graduação e Pesquisa, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Livia Vieira Araujo de Castilho
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil; Instituto Alberto Luiz Coimbra de Pós Graduação e Pesquisa, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Leandro Stefano Sangenito
- Instituto de Microbiologia Professor Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ilson Paranhos Pasqualino
- Instituto Alberto Luiz Coimbra de Pós Graduação e Pesquisa, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - André Luis Souza Dos Santos
- Instituto de Microbiologia Professor Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bianca Cruz Neves
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | |
Collapse
|
20
|
Macêdo-Sales PA, Souza LOP, Della-Terra PP, Lozoya-Pérez NE, Machado RLD, Rocha EMDSD, Lopes-Bezerra LM, Guimarães AJ, Rodrigues AM, Mora-Montes HM, Santos ALSD, Baptista ARDS. Coinfection of domestic felines by distinct Sporothrix brasiliensis in the Brazilian sporotrichosis hyperendemic area. Fungal Genet Biol 2020; 140:103397. [PMID: 32325170 DOI: 10.1016/j.fgb.2020.103397] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 10/20/2019] [Revised: 04/13/2020] [Accepted: 04/17/2020] [Indexed: 12/14/2022]
Abstract
Microbial interactions may impact patient's diagnosis, prognosis and treatment. Sporotrichosis is a hyperendemic neglected zoonosis in Brazil, caused by Sporothrix brasiliensis. Four pairs of clinical isolates of Sporothrix were recovered from four diseased cats (CIM01-CIM04, two isolates per animal) raising the possibility of coinfection in a sporotrichosis hyperendemic area, Brazil. Each isolate of the pair had distinct pigmentation in mycological culture, and was designated as "Light" or "Dark", for low and high pigmentation, respectively. Dark isolates reacted strongly with monoclonal antibodies to melanin (p ≤ 0.05) by both ELISA and FACS quantitation, and displayed a ring pattern with some regions exhibiting higher punctuated labeling at cell wall by immunofluorescence. In turn, Light isolates reacted less intensely, with few and discrete punctuated labeling at the cell wall. PCR identified all isolates as S. brasiliensis, MAT1-2 idiomorph. Sequencing of β-tubulin and calmodulin genes followed by phylogenetic analysis placed all eight isolates within the same cluster as others from the Brazilian hyperendemic area. The ability of these strains to stimulate cytokine production by human PBMCs (Peripheral blood mononuclear cells) was also analyzed. CIM01 and CIM03 Light and Dark isolates showed similar cytokine profiles to the control strain, while CIM02 and CIM04 behaved differently (p < 0.001), suggesting that differences in the surface of the isolates can influence host-fungus interaction. MICs for amphotericin B, terbinafine, caspofungin, micafungin, itraconazole, fluconazole, and voriconazole were obtained (CLSI M38-A2/M27-A3). Pairwise comparisons showed distinct MICs between Sporothrix Light and Dark isolates, higher than at least two-fold dilutions, to at least one of the antifungals tested. Isolates from the same pair displayed discrepancies in relation to fungistatic or fungicidal drug activity, notably after itraconazole exposure. Since S. brasiliensis Light and Dark isolates show disparate phenotypic parameters it is quite possible that coinfection represents a common occurrence in the hyperendemic area, with potential clinical implications on feline sporotrichosis dynamics. Alternatively, future studies will address if this specie may have, as reported for other fungi, broad phenotypic plasticity.
Collapse
Affiliation(s)
| | - Lucieri Olegario Pereira Souza
- Laboratory of Advanced Studies of Emerging and Resistant Microorganisms, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Paula Portella Della-Terra
- Laboratory of Emerging Fungal Pathogens, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Nancy Edith Lozoya-Pérez
- Department of Biology, Division of Exact and Natural Sciences, Universidad de Guanajuato, Gto, Mexico
| | | | | | | | - Allan Jefferson Guimarães
- Department of Microbiology and Parasitology, Biomedical Institute, Federal Fluminense University, Niterói, RJ, Brazil
| | - Anderson Messias Rodrigues
- Laboratory of Emerging Fungal Pathogens, Department of Microbiology, Immunology and Parasitology, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Héctor Manuel Mora-Montes
- Department of Biology, Division of Exact and Natural Sciences, Universidad de Guanajuato, Gto, Mexico
| | - André Luis Souza Dos Santos
- Laboratory of Advanced Studies of Emerging and Resistant Microorganisms, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | |
Collapse
|
21
|
Silva LN, de Mello TP, de Souza Ramos L, Branquinha MH, Dos Santos ALS. New and Promising Chemotherapeutics for Emerging Infections Involving Drug-resistant Non-albicans Candida Species. Curr Top Med Chem 2020; 19:2527-2553. [PMID: 31654512 DOI: 10.2174/1568026619666191025152412] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 09/13/2018] [Revised: 02/13/2019] [Accepted: 02/16/2019] [Indexed: 02/06/2023]
Abstract
Fungal infections are a veritable public health problem worldwide. The increasing number of patient populations at risk (e.g. transplanted individuals, cancer patients, and HIV-infected people), as well as the use of antifungal agents for prophylaxis in medicine, have favored the emergence of previously rare or newly identified fungal species. Indeed, novel antifungal resistance patterns have been observed, including environmental sources and the emergence of simultaneous resistance to different antifungal classes, especially in Candida spp., which are known for the multidrug-resistance (MDR) profile. In order to circumvent this alarming scenario, the international researchers' community is engaged in discovering new, potent, and promising compounds to be used in a near future to treat resistant fungal infections in hospital settings on a global scale. In this context, many compounds with antifungal action from both natural and synthetic sources are currently under clinical development, including those that target either ergosterol or β(1,3)-D-glucan, presenting clear evidence of pharmacologic/pharmacokinetic advantages over currently available drugs against these two well-known fungal target structures. Among these are the tetrazoles VT-1129, VT-1161, and VT-1598, the echinocandin CD101, and the glucan synthase inhibitor SCY-078. In this review, we compiled the most recent antifungal compounds that are currently in clinical trials of development and described the potential outcomes against emerging and rare Candida species, with a focus on C. auris, C. dubliniensis, C. glabrata, C. guilliermondii, C. haemulonii, and C. rugosa. In addition to possibly overcoming the limitations of currently available antifungals, new investigational chemical agents that can enhance the classic antifungal activity, thereby reversing previously resistant phenotypes, were also highlighted. While novel and increasingly MDR non-albicans Candida species continue to emerge worldwide, novel strategies for rapid identification and treatment are needed to combat these life-threatening opportunistic fungal infections.
Collapse
Affiliation(s)
- Laura Nunes Silva
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Thaís Pereira de Mello
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lívia de Souza Ramos
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marta Helena Branquinha
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - André Luis Souza Dos Santos
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Programa de Pós-Graduação em Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| |
Collapse
|
22
|
Silva LN, de Mello TP, de Souza Ramos L, Branquinha MH, Roudbary M, Dos Santos ALS. Fungal Infections in COVID-19-Positive Patients: A Lack of Optimal Treatment Options. Curr Top Med Chem 2020; 20:1951-1957. [PMID: 33040728 DOI: 10.2174/156802662022200917110102] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Laura Nunes Silva
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes Centro de Ciencias da Saude (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Thaís Pereira de Mello
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes Centro de Ciencias da Saude (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Lívia de Souza Ramos
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes Centro de Ciencias da Saude (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Marta Helena Branquinha
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes Centro de Ciencias da Saude (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Maryam Roudbary
- Iran University of Medical Sciences, School of Medicine, Department of Medical Mycology and Parasitology, Tehran, Iran
| | - André Luis Souza Dos Santos
- Laboratorio de Estudos Avancados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Goes Centro de Ciencias da Saude (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| |
Collapse
|
23
|
Guerrieri CG, Pereira MF, Galdino ACM, Dos Santos ALS, Elias WP, Schuenck RP, Spano LC. Typical and Atypical Enteroaggregative Escherichia coli Are Both Virulent in the Galleria mellonella Model. Front Microbiol 2019; 10:1791. [PMID: 31456762 PMCID: PMC6700222 DOI: 10.3389/fmicb.2019.01791] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 04/17/2019] [Accepted: 07/19/2019] [Indexed: 12/16/2022] Open
Abstract
Enteroaggregative Escherichia coli (EAEC) is an emerging pathotype responsible for acute and persistent diarrhea. It can be classified as typical and atypical strains, respectively, based on the presence or absence of the AggR regulon, suggesting a higher virulence for typical EAEC. This study aims to evaluate in the Galleria mellonella model if there are differences in the virulence profiles among clinical strains of typical and atypical EAEC, prototype strains EAEC C1096, 042 and its aggR mutant. The clinical EAEC strains (n = 20) were analyzed for the presence of 22 putative virulence factors of EAEC or extraintestinal E. coli by PCR, as well as phenotypic characteristics of virulence (enzymes, siderophore, and biofilm). The survival of the larvae was analyzed after inoculation of 104-107 CFU/larva; the monitoring of bacterial growth in vivo and hemocyte quantification was determined after inoculation of the prototype strains (105 CFU/larva) at different periods after infection. The strains of typical and atypical EAEC presented the same virulence profile for the larva, regardless of the amount or type of genes and phenotypic aspects of virulence analyzed. In addition, the EAEC 042 aggR mutant strain showed a significant reduction in the mortality of the inoculated larvae compared to the wild-type strain. In conclusion, the results obtained herein demonstrate that the virulence of EAEC seems to be related to the AggR regulon, but not exclusively, and atypical EAEC strains may be as virulent as typical ones in vivo in the G. mellonella model.
Collapse
Affiliation(s)
- Caroline Gastaldi Guerrieri
- Laboratory of Virology and Infectious Gastroenteritis, Department of Pathology, Health Sciences Center, Federal University of Espírito Santo, Vitória, Brazil
| | - Monalessa Fábia Pereira
- Laboratory of Virology and Infectious Gastroenteritis, Department of Pathology, Health Sciences Center, Federal University of Espírito Santo, Vitória, Brazil
| | - Anna Clara Milesi Galdino
- Laboratory of Advanced Studies of Emerging and Resistant Microorganisms, Department of General Microbiology, Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - André Luis Souza Dos Santos
- Laboratory of Advanced Studies of Emerging and Resistant Microorganisms, Department of General Microbiology, Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Ricardo Pinto Schuenck
- Laboratory of Virology and Infectious Gastroenteritis, Department of Pathology, Health Sciences Center, Federal University of Espírito Santo, Vitória, Brazil
| | - Liliana Cruz Spano
- Laboratory of Virology and Infectious Gastroenteritis, Department of Pathology, Health Sciences Center, Federal University of Espírito Santo, Vitória, Brazil
| |
Collapse
|
24
|
Marques CSF, Machado Júnior JB, Andrade LRDM, Andrade LN, Santos ALSD, Cruz MDSPE, Chaud M, Fricks AT, Severino P. Use of pharmaceutical nanotechnology for the treatment of leishmaniasis. Rev Soc Bras Med Trop 2019; 52:e20180246. [PMID: 30994800 DOI: 10.1590/0037-8682-0246-2018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 11/29/2018] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Leishmaniasis is a global public health concern. Currently available treatments are associated with considerable side effects. The use of nanotechnology has shown promise for improving efficacy and bioavailability and minimizing side effects. METHODS This study investigated available literature, including patents and scientific articles, to identify advances in the use of nanotechnology for the treatment of leishmaniasis. RESULTS Our findings revealed a stable number of patents and scientific articles published over the past five years. CONCLUSIONS There is a need to intensify research on the use of nanotechnology for the treatment of leishmaniasis.
Collapse
Affiliation(s)
- Carine Santana Ferreira Marques
- Programa de Pós-Graduação em Biotecnologia Industrial, Universidade Tiradentes, Aracaju, SE, Brasil.,Laboratório de Nanotecnologia e Nanomedicina, Instituto de Tecnologia e Pesquisa, Aracaju, SE, Brasil
| | - Jorge Barreto Machado Júnior
- Programa de Pós-Graduação em Biotecnologia Industrial, Universidade Tiradentes, Aracaju, SE, Brasil.,Laboratório de Nanotecnologia e Nanomedicina, Instituto de Tecnologia e Pesquisa, Aracaju, SE, Brasil
| | - Lucas Rannier de Melo Andrade
- Programa de Pós-Graduação em Biotecnologia Industrial, Universidade Tiradentes, Aracaju, SE, Brasil.,Laboratório de Nanotecnologia e Nanomedicina, Instituto de Tecnologia e Pesquisa, Aracaju, SE, Brasil
| | - Luciana Nalone Andrade
- Programa de Pós-Graduação em Biotecnologia Industrial, Universidade Tiradentes, Aracaju, SE, Brasil.,Laboratório de Nanotecnologia e Nanomedicina, Instituto de Tecnologia e Pesquisa, Aracaju, SE, Brasil
| | | | | | - Marco Chaud
- Laboratório de Biomateriais e Nanotecnologia, Universidade de Sorocaba, Sorocaba, SP, Brasil
| | - Alini Tinoco Fricks
- Programa de Pós-Graduação em Biotecnologia Industrial, Universidade Tiradentes, Aracaju, SE, Brasil.,Laboratório de Nanotecnologia e Nanomedicina, Instituto de Tecnologia e Pesquisa, Aracaju, SE, Brasil
| | - Patrícia Severino
- Programa de Pós-Graduação em Biotecnologia Industrial, Universidade Tiradentes, Aracaju, SE, Brasil.,Laboratório de Nanotecnologia e Nanomedicina, Instituto de Tecnologia e Pesquisa, Aracaju, SE, Brasil
| |
Collapse
|
25
|
Santos ALSD, Galdino ACM, Mello TPD, Ramos LDS, Branquinha MH, Bolognese AM, Columbano Neto J, Roudbary M. What are the advantages of living in a community? A microbial biofilm perspective! Mem Inst Oswaldo Cruz 2018; 113:e180212. [PMID: 30066753 PMCID: PMC6057313 DOI: 10.1590/0074-02760180212] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 07/02/2018] [Indexed: 01/05/2023] Open
Abstract
Biofilm formation is the preferred mode of growth lifestyle for many microorganisms, including bacterial and fungal human pathogens. Biofilm is a strong and dynamic structure that confers a broad range of advantages to its members, such as adhesion/cohesion capabilities, mechanical properties, nutritional sources, metabolite exchange platform, cellular communication, protection and resistance to drugs (e.g., antimicrobials, antiseptics, and disinfectants), environmental stresses (e.g., dehydration and ultraviolet light), host immune attacks (e.g., antibodies, complement system, antimicrobial peptides, and phagocytes), and shear forces. Microbial biofilms cause problems in the hospital environment, generating high healthcare costs and prolonged patient stay, which can result in further secondary microbial infections and various health complications. Consequently, both public and private investments must be made to ensure better patient management, as well as to find novel therapeutic strategies to circumvent the resistance and resilience profiles arising from biofilm-associated microbial infections. In this work, we present a general overview of microbial biofilm formation and its relevance within the biomedical context.
Collapse
Affiliation(s)
| | - Anna Clara Milesi Galdino
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Estudos Avançados em Microrganismos Emergentes e Resistentes, Rio de Janeiro, RJ, Brasil.,Universidade Federal do Rio de Janeiro, Instituto de Química, Programa de Pós-Graduação em Bioquímica, Rio de Janeiro, RJ, Brasil
| | - Thaís Pereira de Mello
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Estudos Avançados em Microrganismos Emergentes e Resistentes, Rio de Janeiro, RJ, Brasil
| | - Lívia de Souza Ramos
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Estudos Avançados em Microrganismos Emergentes e Resistentes, Rio de Janeiro, RJ, Brasil
| | - Marta Helena Branquinha
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Estudos Avançados em Microrganismos Emergentes e Resistentes, Rio de Janeiro, RJ, Brasil
| | - Ana Maria Bolognese
- Universidade Federal do Rio de Janeiro, Faculdade de Odontologia, Departamento de Odontopediatria e Ortodontia, Rio de Janeiro, RJ, Brasil
| | - José Columbano Neto
- Faculdades São José, Faculdade de Odontologia, Disciplina de Ortodontia e Clínica Integrada Infantil, Rio de Janeiro, RJ, Brasil
| | - Maryam Roudbary
- Iran University of Medical Sciences, School of Medicine, Department of Medical Mycology and Parasitology, Tehran, Iran
| |
Collapse
|
26
|
Mello TPD, Aor AC, Gonçalves DDS, Seabra SH, Branquinha MH, Santos ALSD. Scedosporium apiospermum, Scedosporium aurantiacum, Scedosporium minutisporum and Lomentospora prolificans: a comparative study of surface molecules produced by conidial and germinated conidial cells. Mem Inst Oswaldo Cruz 2018; 113:e180102. [PMID: 29924142 PMCID: PMC6001581 DOI: 10.1590/0074-02760180102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 04/02/2018] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Scedosporium/Lomentospora species are opportunistic mould pathogens, presenting notable antifungal resistance. OBJECTIVES/METHODS We analysed the conidia and germinated conidia of S. apiospermum (Sap), S. aurantiacum (Sau), S. minutisporum (Smi) and L. prolificans (Lpr) by scanning electron microscopy and exposition of surface molecules by fluorescence microscopy. FINDINGS Conidia of Sap, Smi and Sau had oval, ellipsoidal and cylindrical shape, respectively, with several irregularities surrounding all surface areas, whereas Lpr conidia were rounded with a smooth surface. The germination of Sap occurred at the conidial bottom, while Smi and Sau germination primarily occurred at the centre of the conidial cell, and Lpr germination initiated at any part of the conidial surface. The staining of N-acetylglucosamine-containing molecules by fluorescein-labelled WGA primarily occurred during the germination of all studied fungi and in the conidial scars, which is the primary location of germination. Calcofluor white, which recognises the polysaccharide chitin, strongly stained the conidial cells and, to a lesser extent, the germination. Both mannose-rich glycoconjugates (evidenced by fluoresceinated-ConA) and cell wall externally located polypeptides presented distinct surface locations and expression according to both morphotypes and fungal species. In contrast, sialic acid and galactose-containing structures were not detected at fungal surfaces. MAIN CONCLUSIONS The present study demonstrated the differential production/exposition of surface molecules on distinct morphotypes of Scedosporium/Lomentospora species.
Collapse
Affiliation(s)
- Thaís Pereira de Mello
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Ana Carolina Aor
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Diego de Souza Gonçalves
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Sergio Henrique Seabra
- Laboratório de Tecnologia em Cultura de Células, Centro Universitário Estadual da Zona Oeste, Rio de Janeiro, RJ, Brasil
| | - Marta Helena Branquinha
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - André Luis Souza Dos Santos
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| |
Collapse
|
27
|
Mello TPD, Aor AC, Oliveira SSCD, Branquinha MH, Santos ALSD. Conidial germination in Scedosporium apiospermum, S. aurantiacum, S. minutisporum and Lomentospora prolificans: influence of growth conditions and antifungal susceptibility profiles. Mem Inst Oswaldo Cruz 2017; 0:0. [PMID: 27355215 PMCID: PMC4957502 DOI: 10.1590/0074-02760160200] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 06/02/2016] [Indexed: 12/05/2022] Open
Abstract
In the present study, we have investigated some growth conditions capable of inducing the conidial germination in Scedosporium apiospermum, S. aurantiacum, S. minutisporum and Lomentospora prolificans. Germination in Sabouraud medium (pH 7.0, 37ºC, 5% CO2) showed to be a typically time-dependent event, reaching ~75% in S. minutisporum and > 90% in S. apiospermum, S. aurantiacum and L. prolificans after 4 h. Similar germination rate was observed when conidia were incubated under different media and pHs. Contrarily, temperature and CO2 tension modulated the germination. The isotropic conidial growth (swelling) and germ tube-like projection were evidenced by microscopy and cytometry. Morphometric parameters augmented in a time-dependent fashion, evidencing changes in size and granularity of fungal cells compared with dormant 0 h conidia. In parallel, a clear increase in the mitochondrial activity was measured during the transformation of conidia-into-germinated conidia. Susceptibility profiles to itraconazole, fluconazole, voriconazole, amphotericin B and caspofungin varied regarding each morphotype and each fungal species. Overall, the minimal inhibitory concentrations for hyphae were higher than conidia and germinated conidia, except for caspofungin. Collectively, our study add new data about the conidia-into-hyphae transformation in Scedosporium and Lomentospora species, which is a relevant biological process of these molds directly connected to their antifungal resistance and pathogenicity mechanisms.
Collapse
Affiliation(s)
- Thaís Pereira de Mello
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Investigação de Peptidases, Rio de Janeiro, RJ, Brasil
| | - Ana Carolina Aor
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Investigação de Peptidases, Rio de Janeiro, RJ, Brasil
| | - Simone Santiago Carvalho de Oliveira
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Investigação de Peptidases, Rio de Janeiro, RJ, Brasil
| | - Marta Helena Branquinha
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Investigação de Peptidases, Rio de Janeiro, RJ, Brasil
| | - André Luis Souza Dos Santos
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Investigação de Peptidases, Rio de Janeiro, RJ, Brasil
| |
Collapse
|
28
|
Granato MQ, Gonçalves DDS, Seabra SH, McCann M, Devereux M, Dos Santos ALS, Kneipp LF. 1,10-Phenanthroline-5,6-Dione-Based Compounds Are Effective in Disturbing Crucial Physiological Events of Phialophora verrucosa. Front Microbiol 2017; 8:76. [PMID: 28194139 PMCID: PMC5276843 DOI: 10.3389/fmicb.2017.00076] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 10/17/2016] [Accepted: 01/11/2017] [Indexed: 11/13/2022] Open
Abstract
Phialophora verrucosa is a dematiaceous fungus able to cause chromoblastomycosis, phaeohyphomycosis and mycetoma. All these fungal diseases are extremely difficult to treat and often refractory to the current therapeutic approaches. Therefore, there is an urgent necessity to develop new antifungal agents to combat these mycoses. In this context, the aim of the present work was to investigate the effect of 1,10-phenanthroline-5,6-dione (phendione) and its metal-based derivatives [Ag(phendione)2]ClO4 = ([Ag(phendione)2]+) and [Cu(phendione)3](ClO4)2.4H2O = ([Cu(phendione)3]2+) on crucial physiological events of P. verrucosa conidial cells. Using the CLSI protocol, we have shown that phendione, [Ag(phendione)2]+ and [Cu(phendione)3]2+ were able to inhibit fungal proliferation, presenting MIC/IC50 values of 12.0/7.0, 4.0/2.4, and 5.0/1.8 μM, respectively. [Cu(phendione)3]2+ had fungicidal action and when combined with amphotericin B, both at sub-MIC (½ × MIC) concentrations, significantly reduced (~40%) the fungal growth. Cell morphology changes inflicted by phendione and its metal-based derivatives was corroborated by scanning electron microscopy, which revealed irreversible ultrastructural changes like surface invaginations, cell disruption and shrinkages. Furthermore, [Cu(phendione)3]2+ and [Ag(phendione)2]+ were able to inhibit metallopeptidase activity secreted by P. verrucosa conidia by approximately 85 and 40%, respectively. Ergosterol content was reduced (~50%) after the treatment of P. verrucosa conidial cells with both phendione and [Ag(phendione)2]+. To different degrees, all of the test compounds were able to disturb the P. verrucosa conidia-into-mycelia transformation. Phendione and its Ag+ and Cu2+ complexes may represent a promising new group of antimicrobial agents effective at inhibiting P. verrucosa growth and morphogenesis.
Collapse
Affiliation(s)
- Marcela Queiroz Granato
- Laboratório de Taxonomia, Bioquímica e Bioprospecção de Fungos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz Rio de Janeiro, Brazil
| | - Diego de Souza Gonçalves
- Laboratório de Investigação de Peptidases, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil; Programa de Pós-Graduação em Bioquímica, Instituto de Química, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Sergio Henrique Seabra
- Laboratório de Tecnologia em Cultura de Células, Centro Universitário Estadual da Zona Oeste (UEZO) Duque de Caxias, Brazil
| | - Malachy McCann
- Chemistry Department, Maynooth University, National University of Ireland Maynooth, Ireland
| | - Michael Devereux
- Centre for Biomimetic and Therapeutic Research, Focas Research Institute, Dublin Institute of Technology Dublin, Ireland
| | - André Luis Souza Dos Santos
- Laboratório de Investigação de Peptidases, Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil; Programa de Pós-Graduação em Bioquímica, Instituto de Química, Universidade Federal do Rio de JaneiroRio de Janeiro, Brazil
| | - Lucimar Ferreira Kneipp
- Laboratório de Taxonomia, Bioquímica e Bioprospecção de Fungos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz Rio de Janeiro, Brazil
| |
Collapse
|
29
|
de Mello TP, de Souza Ramos L, Braga-Silva LA, Branquinha MH, Dos Santos ALS. Fungal Biofilm - A Real Obstacle against an Efficient Therapy: Lessons from Candida. Curr Top Med Chem 2017:CTMC-EPUB-80841. [PMID: 28056742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 09/10/2016] [Accepted: 09/18/2016] [Indexed: 06/06/2023]
Abstract
The past decades have witnessed a dramatic increase in invasive fungal infections, especially caused by different species belonging to the Candida genus. Nowadays, even after many improvements in several medical procedures, Candida infections (candidiasis) still account for an unacceptable high rate of morbimortality in hospital settings. Corroborating this statement, fungal biofilms formed on both abiotic and living surfaces are responsible for an important medical and economic burden, since biofilm lifestyle confers numerous advantages to the pathogens, including high tolerance to environmental stresses such as antimicrobials and host immune responses. Aggravating this scenario, the currently used antifungal drugs have mostly been developed to target exponentially growing fungal cells and are poorly or not effective against biofilm structures. So, the challenges to inhibit biofilm formation (e.g., blocking the fungal adhesion and its fully development due to the changes of physicochemical properties of the inert substrates by covering or impregnating them with antimicrobial compounds, for example, silver nanoparticles) and/or to disarticulate mature biofilm architecture (e.g., by using compounds capable in destabilizing, weakening or destroying the extracellular matrix components, including inhibitors of quorum sensing signals, hydrolytic enzymes, surfactants, chelator agents and biocides) are stimulating researchers around the world to search novel strategies and new chemotherapeutic options to control fungal biofilm. In this context, the present review summarizes some promising approaches and/or strategies that could improve our ability to prevent or eradicate fungal biofilms in medical settings, focusing on the lessons learned with Candida model.
Collapse
Affiliation(s)
| | | | | | | | - André Luis Souza Dos Santos
- Laboratório de Investigação de Peptidases (LIP), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Bloco E - subsolo, sala 05, Centro de Ciências da Saúde (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ 21941-902, Brazil
| |
Collapse
|
30
|
Oliveira SSCD, Gonçalves DDS, Garcia-Gomes ADS, Gonçalves IC, Seabra SH, Menna-Barreto RF, Lopes AHDCS, D'Avila-Levy CM, Santos ALSD, Branquinha MH. Susceptibility of Phytomonas serpens to calpain inhibitors in vitro: interference on the proliferation, ultrastructure, cysteine peptidase expression and interaction with the invertebrate host. Mem Inst Oswaldo Cruz 2016; 112:31-43. [PMID: 27925020 PMCID: PMC5224352 DOI: 10.1590/0074-02760160270] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 09/12/2016] [Indexed: 12/15/2022] Open
Abstract
A pleiotropic response to the calpain inhibitor MDL28170 was detected in the tomato
parasite Phytomonas serpens. Ultrastructural studies revealed that
MDL28170 caused mitochondrial swelling, shortening of flagellum and disruption of
trans Golgi network. This effect was correlated to the inhibition in processing of
cruzipain-like molecules, which presented an increase in expression paralleled by
decreased proteolytic activity. Concomitantly, a calcium-dependent cysteine peptidase
was detected in the parasite extract, the activity of which was repressed by
pre-incubation of parasites with MDL28170. Flow cytometry and Western blotting
analyses revealed the differential expression of calpain-like proteins (CALPs) in
response to the pre-incubation of parasites with the MDL28170, and confocal
fluorescence microscopy confirmed their surface location. The interaction of
promastigotes with explanted salivary glands of the insect Oncopeltus
fasciatus was reduced when parasites were pre-treated with MDL28170,
which was correlated to reduced levels of surface cruzipain-like and gp63-like
molecules. Treatment of parasites with anti-Drosophila melanogaster
(Dm) calpain antibody also decreased the adhesion process. Additionally, parasites
recovered from the interaction process presented higher levels of surface
cruzipain-like and gp63-like molecules, with similar levels of CALPs cross-reactive
to anti-Dm-calpain antibody. The results confirm the importance of exploring the use
of calpain inhibitors in studying parasites’ physiology.
Collapse
Affiliation(s)
- Simone Santiago Carvalho de Oliveira
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Investigação de Peptidases, Rio de Janeiro, RJ, Brasil
| | - Diego de Souza Gonçalves
- Universidade Federal do Rio de Janeiro, Instituto de Química, Programa de Pós-Graduação em Bioquímica, Rio de Janeiro, RJ, Brasil
| | - Aline Dos Santos Garcia-Gomes
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Estudos Integrados em Protozoologia, Coleção de Protozoários, Rio de Janeiro, RJ, Brasil.,Instituto Federal de Educação, Ciência e Tecnologia, Laboratório de Microbiologia, Rio de Janeiro, RJ, Brasil
| | - Inês Correa Gonçalves
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Bioquímica de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Sergio Henrique Seabra
- Centro Universitário Estadual da Zona Oeste, Laboratório de Tecnologia em Cultura de Células, Rio de Janeiro, RJ, Brasil
| | | | - Angela Hampshire de Carvalho Santos Lopes
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Bioquímica de Microrganismos, Rio de Janeiro, RJ, Brasil
| | - Claudia Masini D'Avila-Levy
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Estudos Integrados em Protozoologia, Coleção de Protozoários, Rio de Janeiro, RJ, Brasil
| | - André Luis Souza Dos Santos
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Investigação de Peptidases, Rio de Janeiro, RJ, Brasil.,Universidade Federal do Rio de Janeiro, Instituto de Química, Programa de Pós-Graduação em Bioquímica, Rio de Janeiro, RJ, Brasil
| | - Marta Helena Branquinha
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Geral, Laboratório de Investigação de Peptidases, Rio de Janeiro, RJ, Brasil
| |
Collapse
|
31
|
Barbosa GM, Dos Santos EG, Capella FNC, Homsani F, de Pointis Marçal C, Dos Santos Valle R, de Araújo Abi-Chacra É, Braga-Silva LA, de Oliveira Sales MH, da Silva Neto ID, da Veiga VF, Dos Santos ALS, Holandino C. Direct electric current modifies important cellular aspects and ultrastructure features of Candida albicans yeasts: Influence of doses and polarities. Bioelectromagnetics 2016; 38:95-108. [PMID: 27783424 DOI: 10.1002/bem.22015] [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: 10/28/2015] [Accepted: 10/07/2016] [Indexed: 11/09/2022]
Abstract
Available treatments against human fungal pathogens present high levels of resistance, motivating the development of new antifungal therapies. In this context, the present work aimed to analyze direct electric current (DC) antifungal action, using an in vitro apparatus equipped with platinum electrodes. Candida albicans yeast cells were submitted to three distinct conditions of DC treatment (anodic flow-AF; electroionic flow-EIF; and cathodic flow-CF), as well as different charges, ranging from 0.03 to 2.40 C. Our results indicated C. albicans presented distinct sensibility depending on the DC intensity and polarity applied. Both the colony-forming unit assay and the cytometry flow with propidium iodide indicated a drastic reduction on cellular viability after AF treatment with 0.15 C, while CF- and EIF-treated cells stayed alive when DC doses were increased up to 2.40 C. Additionally, transmission electron microscopy revealed important ultrastructural alterations in AF-treated yeasts, including cell structure disorganization, ruptures in plasmatic membrane, and cytoplasmic rarefaction. This work emphasizes the importance of physical parameters (polarity and doses) in cellular damage, and brings new evidence for using electrotherapy to treat C. albicans pathology process. Bioelectromagnetics. 38:95-108, 2017. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Gleyce Moreno Barbosa
- Multidisciplinary Laboratory of Pharmaceutical Sciences, Pharmacy College, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Eldio Gonçalves Dos Santos
- Multidisciplinary Laboratory of Pharmaceutical Sciences, Pharmacy College, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Francielle Neves Carvalho Capella
- Multidisciplinary Laboratory of Pharmaceutical Sciences, Pharmacy College, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fortune Homsani
- Multidisciplinary Laboratory of Pharmaceutical Sciences, Pharmacy College, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carina de Pointis Marçal
- Peptidases Research Laboratory, Paulo de Góes Microbiology Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Roberta Dos Santos Valle
- Peptidases Research Laboratory, Paulo de Góes Microbiology Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Érika de Araújo Abi-Chacra
- Peptidases Research Laboratory, Paulo de Góes Microbiology Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lys Adriana Braga-Silva
- Peptidases Research Laboratory, Paulo de Góes Microbiology Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Venicio Feo da Veiga
- Microscopy Sector of Paulo de Góes Microbiology Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - André Luis Souza Dos Santos
- Peptidases Research Laboratory, Paulo de Góes Microbiology Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carla Holandino
- Multidisciplinary Laboratory of Pharmaceutical Sciences, Pharmacy College, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| |
Collapse
|
32
|
Dos Santos MHB, Da Costa AFE, Da Silva Santos G, Dos Santos ALS, Nagao PE. Effect of chelating agents on the growth, surface polypeptide synthesis and interaction of Streptococcus agalactiae with human epithelial cells. Mol Med Rep 2012; 2:81-4. [PMID: 21475794 DOI: 10.3892/mmr_00000065] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
In the present study, the influence of the chelating agents of ethylenediaminetetraacetic acid (EDTA), ethylene glycol-bis (β-aminoethyl ether) (EGTA) and 1,10-phenanthroline (PHEN) on growth rate, cytoadherence ability and surface protein expression was examined in a clinical strain of Streptococcus agalactiae isolated from a blood sample. EDTA and EGTA at 10 mM did not inhibit the growth of S. agalactiae, while PHEN significantly arrested bacterial proliferation in a concentration range of 10-0.01 mM. The in vitro interaction between S. agalactiae and A549 cells was a time-dependent process; adherence and bacterial intracellular viability were more pronounced after 3 h of contact. The pre-treatment of bacterial cells with EDTA adversely influenced the adhesive properties of S. agalactiae to A549 cells after 2 and 3 h, whereas EGTA only blocked this process after 3 h. Viable intracellular bacteria were just detected after 3 h of interaction, and EDTA and EGTA inhibited intracellular viability in a similar fashion. Conversely, PHEN inhibited neither the adherence nor the intracellular viability of the microorganism. Furthermore, EDTA robustly suppressed surface polypeptide synthesis, suggesting a decline in the possible bacterial ligands responsible for S. agalactiae adhesive properties.
Collapse
|
33
|
Sabbadini PS, Assis MC, Trost E, Gomes DLR, Moreira LO, Dos Santos CS, Pereira GA, Nagao PE, Azevedo VADC, Hirata Júnior R, Dos Santos ALS, Tauch A, Mattos-Guaraldi AL. Corynebacterium diphtheriae 67-72p hemagglutinin, characterized as the protein DIP0733, contributes to invasion and induction of apoptosis in HEp-2 cells. Microb Pathog 2012; 52:165-76. [PMID: 22239957 DOI: 10.1016/j.micpath.2011.12.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2010] [Revised: 11/29/2011] [Accepted: 12/05/2011] [Indexed: 11/25/2022]
Abstract
Although Corynebacterium diphtheriae has been classically described as an exclusively extracellular pathogen, there is growing evidence that it may be internalized by epithelial cells. The aim of the present report was to investigate the nature and involvement of the surface-exposed non-fimbrial 67-72 kDa proteins (67-72p), previously characterized as adhesin/hemagglutinin, in C. diphtheriae internalization by HEp-2 cells. Transmission electron microscopy and bacterial internalization inhibition assays indicated the role of 67-72p as invasin for strains of varied sources. Cytoskeletal changes with accumulation of polymerized actin in HEp-2 cells beneath adherent 67-72p-adsorbed microspheres were observed by the Fluorescent actin staining test. Trypan blue staining method and Methylthiazole tetrazolium reduction assay showed a significant decrease in viability of HEp-2 cells treated with 67-72p. Morphological changes in HEp-2 cells observed after treatment with 67-72p included vacuolization, nuclear fragmentation and the formation of apoptotic bodies. Flow cytometry revealed an apoptotic volume decrease in HEp-2 cells treated with 67-72p. Moreover, a double-staining assay using Propidium Iodide/Annexin V gave information about the numbers of vital vs. early apoptotic cells and late apoptotic or secondary necrotic cells. The comparative analysis of MALDI-TOF MS experiments with the probes provided for 67-72p CDC-E8392 with an in silico proteome deduced from the complete genome sequence of C. diphtheriae identified with significant scores 67-72p as the protein DIP0733. In conclusion, DIP0733 (67-72p) may be directly implicated in bacterial invasion and apoptosis of epithelial cells in the early stages of diphtheria and C. diphtheriae invasive infection.
Collapse
|
34
|
Dos Santos ALS. Protease expression by microorganisms and its relevance to crucial physiological/pathological events. World J Biol Chem 2011; 2:48-58. [PMID: 21537490 PMCID: PMC3083995 DOI: 10.4331/wjbc.v2.i3.48] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2011] [Revised: 02/21/2011] [Accepted: 02/28/2011] [Indexed: 02/05/2023] Open
Abstract
The treatment of infections caused by fungi and trypanosomatids is difficult due to the eukaryotic nature of these microbial cells, which are similar in several biochemical and genetic aspects to host cells. Aggravating this scenario, very few antifungal and anti-trypanosomatidal agents are in clinical use and, therefore, therapy is limited by drug safety considerations and their narrow spectrum of activity, efficacy and resistance. The search for new bioactive agents against fungi and trypanosomatids has been expanded because progress in biochemistry and molecular biology has led to a better understanding of important and essential pathways in these microorganisms including nutrition, growth, proliferation, signaling, differentiation and death. In this context, proteolytic enzymes produced by these eukaryotic microorganisms are appointed and, in some cases, proven to be excellent targets for searching novel natural and/or synthetic pharmacological compounds, in order to cure or prevent invasive fungal/trypanosomatid diseases. With this task in mind, our research group and others have focused on aspartic-type proteases, since the activity of this class of hydrolytic enzymes is directly implicated in several facets of basic biological processes of both fungal and trypanosomatid cells as well as due to the participation in numerous events of interaction between these microorganisms and host structures. In the present paper, a concise revision of the beneficial effects of aspartic protease inhibitors, with emphasis on the aspartic protease inhibitors used in the anti-human immunodeficiency virus therapy, will be presented and discussed using our experience with the following microbial models: the yeast Candida albicans, the filamentous fungus Fonsecaea pedrosoi and the protozoan trypanosomatid Leishmania amazonensis.
Collapse
Affiliation(s)
- André Luis Souza Dos Santos
- André Luis Souza dos Santos, Laboratory of Multidisciplinary Studies on Microbial Biochemistry, Department of General Microbiology, Institute of Microbiology Prof. Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil
| |
Collapse
|
35
|
Dos Santos ALS. HIV aspartyl protease inhibitors as promising compounds against Candida albicans André Luis Souza dos Santos. World J Biol Chem 2010; 1:21-30. [PMID: 21537366 PMCID: PMC3083943 DOI: 10.4331/wjbc.v1.i2.21] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Revised: 02/18/2010] [Accepted: 02/23/2010] [Indexed: 02/05/2023] Open
Abstract
Cells of Candida albicans (C. albicans) can invade humans and may lead to mucosal and skin infections or to deep-seated mycoses of almost all inner organs, especially in immunocompromised patients. In this context, both the host immune status and the ability of C. albicans to modulate the expression of its virulence factors are relevant aspects that drive the candidal susceptibility or resistance; in this last case, culminating in the establishment of successful infection known as candidiasis. C. albicans possesses a potent armamentarium consisting of several virulence molecules that help the fungal cells to escape of the host immune responses. There is no doubt that the secretion of aspartyl-type proteases, designated as Saps, are one of the major virulence attributes produced by C. albicans cells, since these hydrolytic enzymes participate in a wide range of fungal physiological processes as well as in different facets of the fungal-host interactions. For these reasons, Saps clearly hold promise as new potential drug targets. Corroborating this hypothesis, the introduction of new anti-human immunodeficiency virus drugs of the aspartyl protease inhibitor-type (HIV PIs) have emerged as new agents for the inhibition of Saps. The introduction of HIV PIs has revolutionized the treatment of HIV disease, reducing opportunistic infections, especially candidiasis. The attenuation of candidal infections in HIV-infected individuals might not solely have resulted from improved immunological status, but also as a result of direct inhibition of C. albicans Saps. In this article, we review updates on the beneficial effects of HIV PIs against the human fungal pathogen C. albicans, focusing on the effects of these compounds on Sap activity, growth behavior, morphological architecture, cellular differentiation, fungal adhesion to animal cells and abiotic materials, modulation of virulence factors, experimental candidiasis infection, and their synergistic actions with classical antifungal agents.
Collapse
Affiliation(s)
- André Luis Souza Dos Santos
- André Luis Souza dos Santos, Laboratory of Multidisciplinary Studies on Microbial Biochemistry, Department of General Microbiology, Institute of Microbiology Prof. Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil
| |
Collapse
|
36
|
Soares GCMT, da Silva BA, Dos Santos MHB, da Costa AFE, Dos Santos ALS, Morandi V, Nagao PE. Metallopeptidases produced by group B Streptococcus: influence of proteolytic inhibitors on growth and on interaction with human cell lineages. Int J Mol Med 2008; 22:119-125. [PMID: 18575784] [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: 05/26/2023] Open
Abstract
Group B Streptococcus (GBS) is a major etiologic agent of neonatal bacterial infections and is the most common cause of sepsis and pneumonia in newborns. Surface and secreted molecules of GBS are often essential virulence factors which are involved in the adherence of the bacteria to host cells or are required to suppress the defense mechanisms of hosts. We analyzed the peptidase profiles of GBS by detection of proteolytic activities on SDS-PAGE containing copolymerized gelatin as substrate. Based on the inhibition by o-phenathroline and EGTA, three distinct peptidases of 220, 200 and 180 kDa were identified in the culture medium, besides one major cell-associated proteolytic activity, a 200-kDa metallopeptidase, suggesting that all were zinc-metallopeptidases. GBS culture supernatants, rich in metallotype peptidases, also cleaved fibronectin, laminin, type IV collagen, fibrinogen and albumin. Cleavage of the host extracellular matrix by GBS may be a relevant factor in the process of bacterial dissemination and/or invasion. Notably, metallopeptidase inhibitors strongly blocked GBS growth as well as its interaction with human cell lineages. Understanding the contribution of peptidases to the pathogenesis of GBS disease may broaden our perception of how this significant pathogen causes severe infections in newborn infants.
Collapse
|
37
|
Masini d'Avila-Levy C, de Almeida Dias F, Nogueira de Melo AC, Martins JL, De Carvalho Santos Lopes AH, Souza Dos Santos AL, Vermelho AB, Branquinha MH. Insights into the role of gp63-like proteins in lower trypanosomatids. FEMS Microbiol Lett 2006; 254:149-56. [PMID: 16451193 DOI: 10.1111/j.1574-6968.2005.00022.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [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: 11/29/2022] Open
Abstract
Any actual understanding of trypanosomatids in general requires a comprehensive analysis of the less-specialized species as thorough as our knowledge of the more specialized Leishmania and Trypanosoma. In this context, we have shown by antibody cross-reactivity that purified extracellular metallopeptidases from Phytomonas françai, Crithidia deanei (cured strain) and Crithidia guilhermei share common epitopes with the leishmanial gp63. Flow cytometry and fluorescence microscopy analyses indicated the presence of gp63-like molecules on the cell surface of these lower trypanosomatids. Binding assays with explanted guts of Aedes aegypti incubated with purified gp63 and the pretreatment of trypanosomatids with anti-gp63 antibodies indicated that the gp63-like molecules are involved in the adhesive process of these trypanosomatids to the A. aegypti gut wall. In addition, our results indicate for the first time that the gp63-like molecule binds to a polypeptide of 50 kDa on the A. aegypti gut epithelium extract.
Collapse
Affiliation(s)
- Claudia Masini d'Avila-Levy
- Departamento de Microbiologia Geral, Instituto de Microbiologia Prof. Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
38
|
Dos Santos ALS, Soares RMDA. Candida guilliermondii isolated from HIV-infected human secretes a 50 kDa serine proteinase that cleaves a broad spectrum of proteinaceous substrates. ACTA ACUST UNITED AC 2005; 43:13-20. [PMID: 15607631 DOI: 10.1016/j.femsim.2004.06.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [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: 05/06/2004] [Revised: 06/21/2004] [Accepted: 06/22/2004] [Indexed: 11/26/2022]
Abstract
Non-albicans Candida species cause 35-65% of all candidemias in the general population, especially in immunosuppressed individuals. Here, we describe a case of a 19-year-old HIV-infected man with pneumonia due to a yeast-like organism. This clinical yeast isolate was identified as Candida guilliermondii through mycological tests. C. guilliermondii was cultivated in brain heart infusion medium for 48 h at 37 degrees C. After sequential centrifugation and concentration steps, the free-cell culture supernatant was obtained and extracellular proteolytic activity was assayed firstly using gelatin-SDS-PAGE. A 50 kDa proteolytic enzyme was detected with activity at physiological pH. This activity was completely blocked by 10 mM phenylmethylsulphonyl fluoride (PMSF), a serine proteinase inhibitor, suggesting that this extracellular proteinase belongs to the serine proteinase class. E-64, a strong cysteine proteinase inhibitor, and pepstatin A, a specific aspartic proteolytic inhibitor, did not interfere with the 50 kDa proteinase. Conversely, a zinc-metalloproteinase inhibitor (1,10-phenanthroline) restrained the proteinase activity released by C. guilliermondii by approximately 50%. Proteinases are a well-known class of enzymes that participate in a vast context of yeast-host interactions. In an effort to establish a functional implication for this extracellular serine-type enzyme, we investigated its capacity to hydrolyze some serum proteins and extracellular matrix components. We demonstrated that the 50 kDa exocellular serine proteinase cleaved human serum albumin, non-immune human immunoglobulin G, human fibronectin and human placental laminin, generating low molecular mass polypeptides. Collectively, these results showed for the first time the ability of an extracellular proteolytic enzyme other than aspartic-type proteinases in destroying a broad spectrum of relevant host proteins by a clinical species of non-albicans Candida.
Collapse
Affiliation(s)
- André Luis Souza Dos Santos
- Departamento de Microbiologia Geral, Laboratório de Biologia de Protistas, Instituto de Microbiologia Professor Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, 21941-590 Rio de Janeiro, RJ, Brazil.
| | | |
Collapse
|
39
|
Souza Dos Santos AL, Rodrigues ML, Alviano CS, Angluster J, De Araújo Soares RM. Herpetomonas samuelpessoai: dimethylsulfoxide-induced differentiation is influenced by proteinase expression. Curr Microbiol 2003; 46:11-7. [PMID: 12432457 DOI: 10.1007/s00284-002-3795-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [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: 10/27/2022]
Abstract
In this study, we analyzed the influence of proteinase expression on the cellular differentiation of Herpetomonas samuelpessoai. Along cellular differentiation, which was induced by dimethylsulfoxide (DMSO), the trypanosomatids secreted several molecules with variable proteolytic activity. All of them were inhibited by 10 m M 1,10-phenanthroline, suggesting that they are zinc-metalloproteinases. Analysis of parasite extracts revealed the occurrence of a 63-kDa metalloproteinase and a 45-kDa cysteine proteinase. After extraction with Triton X-114 followed by water-detergent partition, the 63-kDa component was present in both aqueous and detergent phases, which indicated that this enzyme may be distributed over different cellular compartments including membrane domains. The 45-kDa component, however, presented hydrophilic properties and was predominantly expressed by DMSO non-treated parasites, suggesting that proteinases may be involved in the process of cellular differentiation in H. samuelpessoai. This was confirmed by the fact that a cysteine proteinase inhibitor abrogated parasite differentiation. The role of proteinases and their relevance in the differentiation of H. samuelpessoai are discussed.
Collapse
Affiliation(s)
- André Luis Souza Dos Santos
- Departamento de Microbiologia Geral, Instituto de Microbiologia Prof. Paulo de Góes (IMPPG), Centro de Ciências da Saúde (CCS), Bloco I, Universidade do Brasil (UFRJ), Ilha do Fundão, 21941-590, Rio de Janeiro, RJ, Brazil
| | | | | | | | | |
Collapse
|