1
|
Marques PH, Rodrigues TCV, Santos EH, Bleicher L, Aburjaile FF, Martins FS, Oliveira CJF, Azevedo V, Tiwari S, Soares S. Design of a multi-epitope vaccine (vme-VAC/MST-1) against cholera and vibriosis based on reverse vaccinology and immunoinformatics approaches. J Biomol Struct Dyn 2023:1-16. [PMID: 38112302 DOI: 10.1080/07391102.2023.2293256] [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: 02/08/2023] [Accepted: 11/25/2023] [Indexed: 12/21/2023]
Abstract
Vibriosis and cholera are serious diseases distributed worldwide and caused by six marine bacteria of the Vibrio genus. Thousands of deaths occur each year due to these illnesses, necessitating the development of new preventive measures. Presently, the existing cholera vaccine demonstrates an effectiveness of approximately 60%. Here we describe a new multi-epitope vaccine, 'vme-VAC/MST-1' based on vaccine targets identified by reverse vaccinology and epitopes predicted by immunoinformatics, two currently effective tools for predicting new vaccines for bacterial pathogens. The vaccine was designed to combat vibriosis and cholera by incorporating epitopes predicted for CTL, HTL, and B cells. These epitopes were identified from six vaccine targets revealed through subtractive genomics, combined with reverse vaccinology, and were further filtered using immunoinformatics approaches based on their predicted immunogenicity. To construct the vaccine, 28 epitopes (24 CTL/B and 4 HTL/B) were linked to the sequence of the cholera toxin B subunit adjuvant. In silico analyses indicate that the resulting immunogen is stable, soluble, non-toxic, and non-allergenic. Furthermore, it exhibits no homology to the host and demonstrates a strong capacity to elicit innate, B-cell, and T-cell immune responses. Our analysis suggests that it is likely to elicit immune reactions mediated through the TLR5 pathway, as evidenced by the molecular docking of the vaccine with the receptor, which revealed high affinity and a favorable reaction. Thus, vme-VAC/MST-1 is predicted to be a safe and effective solution against pathogenic Vibrio spp. However, further experimental analyses are required to measure the vaccine's effects In vivo.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Pedro Henrique Marques
- Institute of Biological Sciences, Post-graduate Interunits Program in Bioinformatics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
- Department of Preventive Veterinary Medicine, School of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Thais Cristina Vilela Rodrigues
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Eduardo Horta Santos
- Institute of Biological Sciences, Post-graduate Interunits Program in Bioinformatics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Lucas Bleicher
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Flavia Figueira Aburjaile
- Department of Preventive Veterinary Medicine, School of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Flaviano S Martins
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Carlo Jose Freire Oliveira
- Department of Microbiology, Immunology and Parasitology, Institute of Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Vasco Azevedo
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Sandeep Tiwari
- Institute of Biology, Federal University of Bahia, Salvador, BA, Brazil
- Institute of Health Sciences, Federal University of Bahia, Salvador, BA, Brazil
| | - Siomar Soares
- Department of Microbiology, Immunology and Parasitology, Institute of Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| |
Collapse
|
2
|
Gomes DS, Oliveira CJF, Costa TMC, Rueda AP, Zanuncio JC, Serrão JE, Souza EA. Histology and histochemistry of the accessory gland of the female reproductive tract of Rhodnius neglectus Lent, 1954 (Hemiptera: Reduviidae). BRAZ J BIOL 2023; 83:e271913. [PMID: 37194827 DOI: 10.1590/1519-6984.271913] [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: 02/09/2023] [Accepted: 04/10/2023] [Indexed: 05/18/2023] Open
Abstract
Rhodnius neglectus is a wild triatomine, vector of the protozoan Trypanosoma cruzi, which causes Chagas' disease, and feeds on the blood of small mammals, being essential for its growth and reproduction. Accessory glands of the female reproductive tract are important in insect reproduction, but their anatomy and histology in R. neglectus are poorly studied. The aim of this work was to describe the histology and histochemistry of the accessory gland of the female reproductive tract of R. neglectus. The reproductive tract of five females of R. neglectus was dissected and the accessory glands transferred to Zamboni's fixative solution, dehydrated in a crescent series of ethanol, embedded in historesin, sectioned at 2 µm thick, stained with toluidine blue for histological analysis or mercury bromophenol blue for detection of total proteins. The accessory gland R. neglectus is tubular, without branches, opening in the dorsal region of the vagina and differing along its length in proximal and distal regions. In the proximal region, the gland is lined by the cuticle with a layer of columnar cells associated with muscle fibers. In the distal region of the gland, the epithelium has spherical secretory cells with terminal apparatus and conducting canaliculi opening in the lumen through pores in the cuticle. Proteins were identified in the gland lumen, terminal apparatus, nucleus and cytoplasm of secretory cells. The histology of the R. neglectus gland is similar to that found in other species of this genus, but with variations in the shape and size of its distal region.
Collapse
Affiliation(s)
- D S Gomes
- Universidade Federal de Viçosa - UFV, Departamento de Biologia Geral/BIOAGRO, Viçosa, MG, Brasil
| | - C J F Oliveira
- Universidade Federal do Triangulo Mineiro - UFTM, Instituto de Ciências Biológicas e Naturais, Uberaba, MG, Brasil
| | - T M C Costa
- Universidade Federal do Triangulo Mineiro - UFTM, Instituto de Ciências Biológicas e Naturais, Uberaba, MG, Brasil
| | - A Plata Rueda
- Universidad Nacional de Colombia - UNAL, Bogotá, Colombia
| | - J C Zanuncio
- Universidade Federal de Viçosa - UFV, Departamento de Entomologia/BIOAGRO, Viçosa, MG, Brasil
| | - J E Serrão
- Universidade Federal de Viçosa - UFV, Departamento de Biologia Geral/BIOAGRO, Viçosa, MG, Brasil
| | - E A Souza
- Universidade Federal de Viçosa - UFV, Instituto de Ciências Biológicas e da Saúde, Rio Paranaíba, MG, Brasil
| |
Collapse
|
3
|
Guimarães VHA, Cassiano C, Queiroz DIB, Pastore R, Lenza R, Freire Oliveira CJ. Clinical, Diagnostic, and Treatment Features of Body Packing in Brazil: Drugs, Cell Phones, and Beyond. Cureus 2022; 14:e27894. [PMID: 36120276 PMCID: PMC9467488 DOI: 10.7759/cureus.27894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2022] [Indexed: 11/06/2022] Open
Abstract
Introduction: Body packing consists of the concealment of substances (drugs and non-narcotics) or products inside the human body with the purpose of smuggling and may represent an emergency due to the fatal risk of narcotic toxicity, intestinal obstruction, and visceral perforation. However, non-narcotic body packing, especially in developing countries, is under-evaluated. Thus, the objective of this study was to evaluate cases of body packers in Brazil as regards narcotic and non-narcotic contents. Methods: This retrospective study analyzes the medical records of body packers admitted from January 2015 to December 2019 at one of the main tertiary hospitals in central Brazil. Results: Ten cases of body packing were observed. We found that five patients carried drugs, while seven carried non-narcotic substances such as cell phones and accessories. All the patients were male, prisoners, and young adults. In six patients, there was gastrointestinal obstruction, and in three, there was acute narcotic intoxication. Abdominal radiography diagnosed eight of the cases. In nine of the cases, emergency laparotomy was required, but all patients successfully recovered. Conclusion: There was a higher prevalence of body packing of non-narcotic content; however, diagnostic and surgical approaches were similar to those of narcotic content. Clinicians must be aware of both non-narcotic and narcotic body packing.
Collapse
|
4
|
Calapodopulos NVI, Sawan-Mendonça MM, da Silva MV, Oliveira CJF, Weffort VR, Rodrigues DBR, Rodrigues V. Association of recurrent upper respiratory tract infections with low production of oxygen intermediates in children. J Pediatr (Rio J) 2022; 98:399-405. [PMID: 34843668 PMCID: PMC9432232 DOI: 10.1016/j.jped.2021.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 08/13/2021] [Accepted: 09/08/2021] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVES Upper respiratory tract infections in children generally have significant morbidity and mortality. There is little data available about functional immaturity of the immune system and the child's susceptibility to infections at the beginning of their lives, thus, justifying a more specific immunological analysis. METHOD Analysis of hemograms and innate and adaptive immune responses in 95 children between age 1 to 6 years with episodes of recurrent respiratory infections (test group n = 39) and without these episodes (control group n = 56) was carried out. The production of reactive oxygen intermediates by peripheral blood cells stimulated by phorbol myristate acetate was analyzed. Additionally, the number of B lymphocytes, auxiliary T lymphocytes, and cytotoxic cells was determined using flow cytometry. RESULTS Results from both groups did not show statistically significant differences in red blood cells, total leukocytes count, and the differential neutrophils, eosinophils, basophils, lymphocytes, and monocytes count. The analysis of the number of B lymphocytes, auxiliary T lymphocytes (LTCD4), and cytotoxic cells (LTCD8) also did not show any difference between both groups. However, the production of radical oxygen intermediates was significantly reduced in the test group as compared to the control group (p < 0.05). CONCLUSIONS There was no difference in the analysis of hemograms, leukograms, or the number of lymphocytes, LTCD4, LTCD8, or LTCD19. The reduced production of oxygen intermediates in the affected group suggests that these children's microbicide capacity is compromised, which may be related to their recurrent respiratory infections.
Collapse
Affiliation(s)
| | - Mônica Miguel Sawan-Mendonça
- Universidade Federal do Triângulo Mineiro (UFTM), Departamento de Imunologia, Microbiologia e Parasitologia, Uberaba, MG, Brazil
| | - Marcos Vinicius da Silva
- Universidade Federal do Triângulo Mineiro (UFTM), Departamento de Imunologia, Microbiologia e Parasitologia, Uberaba, MG, Brazil
| | - Carlo Jose Freire Oliveira
- Universidade Federal do Triângulo Mineiro (UFTM), Departamento de Imunologia, Microbiologia e Parasitologia, Uberaba, MG, Brazil
| | - Virgínia Resende Weffort
- Universidade Federal do Triângulo Mineiro (UFTM), Departamento Materno Infantil, Uberaba, MG, Brazil
| | | | - Virmondes Rodrigues
- Universidade Federal do Triângulo Mineiro (UFTM), Departamento de Imunologia, Microbiologia e Parasitologia, Uberaba, MG, Brazil.
| |
Collapse
|
5
|
Martins BR, Sampaio TM, de Farias AKSR, de Paula Martins R, Teixeira RR, Oliveira RTS, Oliveira CJF, da Silva MV, Rodrigues V, Dantas NO, Espindola FS, Silva ACA, Alves-Balvedi RP. Immunosensor Based on Zinc Oxide Nanocrystals Decorated with Copper for the Electrochemical Detection of Human Salivary Alpha-Amylase. Micromachines (Basel) 2021; 12:657. [PMID: 34204953 PMCID: PMC8229992 DOI: 10.3390/mi12060657] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/28/2021] [Accepted: 05/31/2021] [Indexed: 11/20/2022]
Abstract
(1) Background: Nanocrystals (NCs)-based electrochemical sensors have been proposed for biomarkers detection, although immunosensors using ZnO NCs decorated with copper are still scarce. (2) Methods: Electrochemical immunodetection of human salivary alpha-amylase (HSA) used ZnO, CuO, and ZnO:xCu (x = 0.1, 0.4, 1.0, 4.0, and 12.0) NCs. (3) Results: Substitutional incorporation of Cu2+ in the crystalline structure of ZnO and formation of nanocomposite were demonstrated by characterization. Graphite electrodes were used and the electrochemical signal increased by 40% when using ZnO:1Cu and 4Cu (0.25 mg·mL-1), in an immunosensor (0.372 mg·mL-1 of anti-alpha-amylase and 1% of casein). Different interactions of HSA with the alpha-amylase antibody were registered when adding the NCs together, either before or after the addition of saliva (4 μL). The immunosensor changed specificity due to the interaction of copper. The ZnO:1Cu and ZnO:4Cu samples showed 50% interference in detection when used before the addition of saliva. The immunosensor showed 100% specificity and a sensitivity of 0.00196 U·mL-1. (4) Conclusions: Results showed that the order of NCs addition in the sensors should be tested and evaluated to avoid misinterpretation in detection and to enable advances in the validation of the immunosensor.
Collapse
Affiliation(s)
- Beatriz Rodrigues Martins
- Physiological Science, Federal University of Triangulo Mineiro, Uberaba, MG 38025-180, Brazil; (B.R.M.); (R.d.P.M.); (R.T.S.O.J.); (C.J.F.O.); (M.V.d.S.); (V.R.J.)
| | - Tainá Marques Sampaio
- Biological Science, Federal University of Triangulo Mineiro, Iturama, MG 38280-180, Brazil; (T.M.S.); (A.K.S.R.d.F.)
| | | | - Rheltheer de Paula Martins
- Physiological Science, Federal University of Triangulo Mineiro, Uberaba, MG 38025-180, Brazil; (B.R.M.); (R.d.P.M.); (R.T.S.O.J.); (C.J.F.O.); (M.V.d.S.); (V.R.J.)
| | - Renata Roland Teixeira
- Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, MG 38405-319, Brazil; (R.R.T.); (F.S.E.)
| | - Robson Tadeu Soares Oliveira
- Physiological Science, Federal University of Triangulo Mineiro, Uberaba, MG 38025-180, Brazil; (B.R.M.); (R.d.P.M.); (R.T.S.O.J.); (C.J.F.O.); (M.V.d.S.); (V.R.J.)
| | - Carlo Jose Freire Oliveira
- Physiological Science, Federal University of Triangulo Mineiro, Uberaba, MG 38025-180, Brazil; (B.R.M.); (R.d.P.M.); (R.T.S.O.J.); (C.J.F.O.); (M.V.d.S.); (V.R.J.)
| | - Marcos Vinícius da Silva
- Physiological Science, Federal University of Triangulo Mineiro, Uberaba, MG 38025-180, Brazil; (B.R.M.); (R.d.P.M.); (R.T.S.O.J.); (C.J.F.O.); (M.V.d.S.); (V.R.J.)
| | - Virmondes Rodrigues
- Physiological Science, Federal University of Triangulo Mineiro, Uberaba, MG 38025-180, Brazil; (B.R.M.); (R.d.P.M.); (R.T.S.O.J.); (C.J.F.O.); (M.V.d.S.); (V.R.J.)
| | - Noelio Oliveira Dantas
- Laboratory of New Nanostructured and Functional Materials, Institute of Physics, Federal University of Alagoas, Maceió, AL 57072-900, Brazil; (N.O.D.); (A.C.A.S.)
| | - Foued Salmen Espindola
- Institute of Biotechnology, Federal University of Uberlandia, Uberlandia, MG 38405-319, Brazil; (R.R.T.); (F.S.E.)
| | - Anielle Christine Almeida Silva
- Laboratory of New Nanostructured and Functional Materials, Institute of Physics, Federal University of Alagoas, Maceió, AL 57072-900, Brazil; (N.O.D.); (A.C.A.S.)
- Rede Nordeste de Biotecnologia (RENORBIO), Federal University of Alagoas, Maceió, AL 57072-900, Brazil
| | - Renata Pereira Alves-Balvedi
- Physiological Science, Federal University of Triangulo Mineiro, Uberaba, MG 38025-180, Brazil; (B.R.M.); (R.d.P.M.); (R.T.S.O.J.); (C.J.F.O.); (M.V.d.S.); (V.R.J.)
- Biological Science, Federal University of Triangulo Mineiro, Iturama, MG 38280-180, Brazil; (T.M.S.); (A.K.S.R.d.F.)
| |
Collapse
|
6
|
Jaiswal AK, Tiwari S, Jamal SB, Oliveira LDC, Sales-Campos H, Andrade-Silva LE, Oliveira CJF, Ghosh P, Barh D, Azevedo V, Soares SC, Rodrigues VR, da Silva MV. Reverse vaccinology and subtractive genomics approaches for identifying common therapeutics against Mycobacterium leprae and Mycobacterium lepromatosis. J Venom Anim Toxins Incl Trop Dis 2021; 27:e20200027. [PMID: 33889182 PMCID: PMC8040911 DOI: 10.1590/1678-9199-jvatitd-2020-0027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 12/09/2020] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Mycobacterium leprae and Mycobacterium lepromatosis are gram-positive bacterial pathogens and the causative agents of leprosy in humans across the world. The elimination of leprosy cannot be achieved by multidrug therapy alone, and highlights the need for new tools and drugs to prevent the emergence of new resistant strains. METHODS In this study, our contribution includes the prediction of vaccine targets and new putative drugs against leprosy, using reverse vaccinology and subtractive genomics. Six strains of Mycobacterium leprae and Mycobacterium lepromatosis (4 and 2 strains, respectively) were used for comparison taking Mycobacterium leprae strain TN as the reference genome. Briefly, we used a combined reverse vaccinology and subtractive genomics approach. RESULTS As a result, we identified 12 common putative antigenic proteins as vaccine targets and three common drug targets against Mycobacterium leprae and Mycobacterium lepromatosis. Furthermore, the docking analysis using 28 natural compounds with three drug targets was done. CONCLUSIONS The bis-naphthoquinone compound Diospyrin (CID 308140) obtained from indigenous plant Diospyros spp. showed the most favored binding affinity against predicted drug targets, which can be a candidate therapeutic target in the future against leprosy.
Collapse
Affiliation(s)
- Arun Kumar Jaiswal
- Graduate Program in Bioinformatics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
- Department of Immunology, Microbiology and Parasitology, Institute of Biological Sciences and Natural Sciences, Federal University of Triângulo Mineiro (UFTM), Uberaba, MG, Brazil
| | - Sandeep Tiwari
- Graduate Program in Bioinformatics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Syed Babar Jamal
- Department of Biological Sciences, National University of Medical Sciences, Rawalpindi, Punjab, Pakistan
| | - Letícia de Castro Oliveira
- Graduate Program in Bioinformatics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
- Department of Immunology, Microbiology and Parasitology, Institute of Biological Sciences and Natural Sciences, Federal University of Triângulo Mineiro (UFTM), Uberaba, MG, Brazil
| | - Helioswilton Sales-Campos
- Department of Immunology, Microbiology and Parasitology, Institute of Biological Sciences and Natural Sciences, Federal University of Triângulo Mineiro (UFTM), Uberaba, MG, Brazil
- Institute of Tropical Pathology and Public Health, Federal University of Goias (UFG), Goiânia, Goiás, Brazil
| | - Leonardo Eurípedes Andrade-Silva
- Infectious Disease Department, Institute of Health Sciences, Federal University of Triângulo Mineiro (UFTM), Uberaba, MG, Brazil
| | - Carlo Jose Freire Oliveira
- Department of Immunology, Microbiology and Parasitology, Institute of Biological Sciences and Natural Sciences, Federal University of Triângulo Mineiro (UFTM), Uberaba, MG, Brazil
| | - Preetam Ghosh
- Department of Computer Science, Virginia Commonwealth University, Richmond, VA, USA
| | - Debmalya Barh
- Centre for Genomics and Applied Gene Technology, Institute of Integrative Omics and Applied Biotechnology (IIOAB), Nonakuri, Purba Medinipur, West Bengal, India
| | - Vasco Azevedo
- Graduate Program in Bioinformatics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - Siomar C. Soares
- Department of Immunology, Microbiology and Parasitology, Institute of Biological Sciences and Natural Sciences, Federal University of Triângulo Mineiro (UFTM), Uberaba, MG, Brazil
| | - Virmondes Rodrigues Rodrigues
- Department of Immunology, Microbiology and Parasitology, Institute of Biological Sciences and Natural Sciences, Federal University of Triângulo Mineiro (UFTM), Uberaba, MG, Brazil
| | - Marcos Vinicius da Silva
- Department of Immunology, Microbiology and Parasitology, Institute of Biological Sciences and Natural Sciences, Federal University of Triângulo Mineiro (UFTM), Uberaba, MG, Brazil
| |
Collapse
|
7
|
Guimarães VHA, de Oliveira-Leandro M, Cassiano C, Marques ALP, Motta C, Freitas-Silva AL, de Sousa MAD, Silveira LAM, Pardi TC, Gazotto FC, Silva MV, Rodrigues V, Rodrigues WF, Oliveira CJF. Knowledge About COVID-19 in Brazil: Cross-Sectional Web-Based Study. JMIR Public Health Surveill 2021; 7:e24756. [PMID: 33400684 PMCID: PMC7822056 DOI: 10.2196/24756] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 12/11/2020] [Accepted: 12/24/2020] [Indexed: 12/28/2022] Open
Abstract
Background COVID-19 is a highly transmissible illness caused by SARS-CoV-2. The disease has affected more than 200 countries, and the measures that have been implemented to combat its spread, as there is still no vaccine or definitive medication, have been based on supportive interventions and drug repositioning. Brazil, the largest country in South America, has had more than 140,000 recorded deaths and is one of the most affected countries. Despite the extensive quantity of scientifically recognized information, there are still conflicting discussions on how best to face the disease and the virus, especially with regard to social distancing, preventive methods, and the use of medications. Objective The main purpose of this study is to evaluate the Brazilian population’s basic knowledge about COVID-19 to demonstrate how Brazilians are managing to identify scientifically proven information. Methods A cross-sectional study design was used. An original online questionnaire survey was administered from June 16 to August 21, 2020, across all five different geopolitical regions of the country (ie, the North, Northeast, Center-West, Southeast, and South). The questionnaire was comprised of questions about basic aspects of COVID-19, such as the related symptoms, conduct that should be followed when suspected of infection, risk groups, prevention, transmission, and social distancing. The wrong questionnaire response alternatives were taken from the fake news combat website of the Brazilian Ministry of Health. Participants (aged ≥18 years) were recruited through social networking platforms, including Facebook, WhatsApp, and Twitter. The mean distributions, frequencies, and similarities or dissimilarities between the responses for the different variables of the study were evaluated. The significance level for all statistical tests was less than .05. Results A total of 4180 valid responses representative of all the states and regions of Brazil were recorded. Most respondents had good knowledge about COVID-19, getting an average of 86.59% of the total score with regard to the basic aspects of the disease. The region, education level, age, sex, and social condition had a significant association (P<.001) with knowledge about the disease, which meant that women, the young, those with higher education levels, nonrecipients of social assistance, and more economically and socially developed regions had more correct answers. Conclusions Overall, Brazilians with social media access have a good level of basic knowledge about COVID-19 but with differences depending on the analyzed subgroup. Due to the limitation of the platform used in carrying out the study, care should be taken when generalizing the study findings to populations with less education or who are not used to accessing social networking platforms.
Collapse
Affiliation(s)
| | - Maísa de Oliveira-Leandro
- Laboratory of Immunology and Bioinformatics, Institute of Biological and Natural Sciences, Federal University of Triangulo Mineiro, Uberaba, Brazil
| | - Carolina Cassiano
- Institute of Health Sciences, Federal University of Triangulo Mineiro, Uberaba, Brazil
| | | | - Clara Motta
- Institute of Language Studies, University of Campinas, Campinas, Brazil
| | | | | | | | - Thiago César Pardi
- Institute of Health Sciences, Federal University of Triangulo Mineiro, Uberaba, Brazil
| | | | - Marcos Vinícius Silva
- Laboratory of Immunology and Bioinformatics, Institute of Biological and Natural Sciences, Federal University of Triangulo Mineiro, Uberaba, Brazil
| | - Virmondes Rodrigues
- Laboratory of Immunology and Bioinformatics, Institute of Biological and Natural Sciences, Federal University of Triangulo Mineiro, Uberaba, Brazil
| | - Wellington Francisco Rodrigues
- Laboratory of Immunology and Bioinformatics, Institute of Biological and Natural Sciences, Federal University of Triangulo Mineiro, Uberaba, Brazil
| | - Carlo Jose Freire Oliveira
- Laboratory of Immunology and Bioinformatics, Institute of Biological and Natural Sciences, Federal University of Triangulo Mineiro, Uberaba, Brazil
| |
Collapse
|
8
|
Coutinho ML, Bizzarro B, Tirloni L, Berger M, Freire Oliveira CJ, Sá-Nunes A, Silva Vaz I. Rhipicephalus microplus serpins interfere with host immune responses by specifically modulating mast cells and lymphocytes. Ticks Tick Borne Dis 2020; 11:101425. [PMID: 32335011 PMCID: PMC11000276 DOI: 10.1016/j.ttbdis.2020.101425] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 03/10/2020] [Accepted: 03/22/2020] [Indexed: 01/09/2023]
Abstract
Rhipicephalus microplus ticks feed on a bovine host for three weeks. At the attachment site, inflammatory and immune responses are triggered resulting in the recruitment of cells and production of a set of immunological mediators. To oppose the host's immune responses, ticks inoculate bioactive salivary molecules capable of interfering with these defense mechanisms. Serpins are among the most frequent molecules present in tick saliva and have been shown to negatively affect the host's anti-tick immunity. R. microplus has at least eighteen full-length serpins (RmS) and eleven are transcribed during blood feeding. Among them, RmS-3, RmS-6, and RmS-17 are present in the saliva of engorged females. Here, the effect of these serpins on the immune responses was evaluated in cells involved in innate/inflammatory (mast cells and macrophages) and adaptive (T cells) immunity. RmS-3 modulated mast cells due to its inhibitory activity on peritoneal rat chymase and on vascular permeability in acute inflammation. In addition, both RmS-6 and RmS-17 inhibited vascular permeability. Of the three serpins studied, neither affected activation nor inflammatory cytokine production by murine macrophages. On the other hand, RmS-3 and RmS-17 presented an inhibitory effect on the metabolic activity of lymphocytes, with the latter being the most potent, while RmS-6 had no effect on it. This activity was associated with a decrease in lymphocyte proliferation, but not with induction of cell death. The present study highlights the powerful modulatory role of tick salivary serpins in the host's immune system and inspire the discovery of targets for the treatment of inflammatory/immune disorders.
Collapse
Affiliation(s)
- Mariana L Coutinho
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 91501-970, Brazil.
| | - Bruna Bizzarro
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
| | - Lucas Tirloni
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 91501-970, Brazil.
| | - Markus Berger
- Laboratório de Bioquímica Farmacológica, Centro de Pesquisa Experimental, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, 90035-007, Brazil.
| | - Carlo Jose Freire Oliveira
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, MG, 38025-180, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Anderson Sá-Nunes
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Itabajara Silva Vaz
- Centro de Biotecnologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 91501-970, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular (INCT-EM), Rio de Janeiro, RJ, 21941-902, Brazil; Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, 91501-970, Brazil.
| |
Collapse
|
9
|
Rosa RC, Rodrigues WF, Miguel CB, Cardoso FAG, Espindula AP, Oliveira CJF, Volpon JB. CHRONIC CONSUMPTION OF ALCOHOL ADVERSELY AFFECTS THE BONE OF YOUNG RATS. Acta Ortop Bras 2019; 27:321-324. [PMID: 31798324 PMCID: PMC6870540 DOI: 10.1590/1413-785220192706222834] [Citation(s) in RCA: 6] [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] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Objective: To assess the effect of chronic alcohol consumption on the longitudinal growth of the tibia and bone quality parameters in young rats under an experimental setup. METHODS: The control (n=10) rats received only water. The ethanol (n=10) rats received ethyl alcohol at concentrations established in the protocol for the induction of chronic alcohol consumption. The blood samples were immediately collected via cardiac puncture and processed to evaluate the levels of alkaline phosphatase by automated spectrophotometry. Following blood sample collection, both tibias were dissected, and weighed; the tibial length was measured., and the samples were stored in a freezer for future analysis of the bone mineral content and mechanical resistance, known as maximal load and stiffness. RESULTS: Compromised bone health, with a 35.3% decrease in the serum alkaline phosphatase levels (p < 0.01), a 10% decrease in the tibial mass (p < 0.05), and a 5.3% decrease in the tibial length (p < 0.0001) were noted. Furthermore, a 10% decrease in the bone mineral density was observed (p < 0.01), which led to a 17.2% decrease in the maximum strength (p < 0.01) and 22.6% decrease in stiffness (p < 0.001). CONCLUSION: Chronic consumption of alcohol affected the bones of young rats, making them weaker and osteopenic. In addition, the long bones were shorter, suggesting interference with growth. Level of Evidence III, Case Control Study.
Collapse
|
10
|
Tiveron RDR, Costa DA, Leite MDI, Vaz CBS, Sousa M, Carlos SMCF, Oliveira CJF, Machado RR, Paulino TP. Evaluation of cell damage and modulation of cytokines TNF-α, IL-6 and IL-10 in macrophages exposed to PpIX-mediated photodynamic therapy. BRAZ J BIOL 2019; 80:497-505. [PMID: 31576928 DOI: 10.1590/1519-6984.193748] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 05/11/2019] [Indexed: 11/22/2022] Open
Abstract
Little is known regarding whether photodynamic therapy (PDT)-induced cell death can substantially compromise macrophages (MΦ), which are important cells in PDT-induced immune responses. Here, parameters of PDT-mediated MΦ cytotoxicity and cytokine production in response to protoporphyrin IX (PpIX) were evaluated. Peritoneal MΦ from BALB/c mice were stimulated in vitro with PDT, light, PpIX, or lipopolysaccharide (LPS). After that, cell viability, lipid peroxidation, Nitric Oxide (NO), DNA damage, TNF-α, IL-6 and IL-10 were evaluated. Short PDT exposure reduced cell viability by 10-30%. There was a two-fold increase in NO and DNA degradation, despite the non-increase in lipoperoxidation. PDT increased TNF-α and IL-10, particularly in the presence of LPS, and decreased the production of IL-6 to 10-fold. PDT causes cellular stress, induces NO radicals and leads to DNA degradation, generating a cytotoxic microenvironment. Furthermore, PDT modulates pro- and anti-inflammatory cytokines in MΦ.
Collapse
Affiliation(s)
- R D R Tiveron
- Núcleo de Biotérios, Biotério Central, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - D A Costa
- Universidade de Uberaba, Uberaba, MG, Brasil
| | - M D I Leite
- Programa de Mestrado em Odontologia, Universidade de Uberaba, Uberaba, MG, Brasil
| | - C B S Vaz
- Universidade de Uberaba, Uberaba, MG, Brasil
| | - M Sousa
- Universidade de Uberaba, Uberaba, MG, Brasil
| | - S M C F Carlos
- Laboratório Multidisciplinar, Centro de Educação Profissional, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - C J F Oliveira
- Núcleo de Biotérios, Biotério Central, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - R R Machado
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - T P Paulino
- Laboratório Multidisciplinar, Centro de Educação Profissional, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| |
Collapse
|
11
|
Franzim-Junior E, Mendes MT, Anhê ACBM, da Costa TA, Silva MV, Hernandez CG, Pelli A, Sales-Campos H, Oliveira CJF. Biology of Meccus pallidipennis (Hemiptera: Reduviidae) to Other Conditions Than That Encountered in Their Native Habitat. J Arthropod Borne Dis 2018; 12:262-268. [PMID: 30584549 PMCID: PMC6297726] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 07/17/2018] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Meccus pallidipennis (Hemiptera: Reduviidae) is only found in Mexico and is one of the most important vectors for Trypanosoma cruzi transmission there. Because data concerning the ability of this bug to adapt to different environments are scarce, we aimed to elucidate its biology, behavior and ability to acclimatize to different environmental conditions. METHODS From the eclosion of 90 1st instar nymphs, development was followed until the adult phase. Adults were fed after 30 days of fasting, and the average amount of blood ingested, the time between the beginning of the blood meal and the production of feces, and the frequency of stools/insect were recorded during their meals. After taking a blood meal, couples were isolated and monitored for 21 days, during which eggs were collected weekly. RESULTS The development of M. pallidipennis took 171.74±7.03 days to complete its life cycle, and females ingested larger amounts of blood than males. Oviposition was constant and did not demonstrate a significant decrease during this study. CONCLUSION Meccus pallidipennis was able to acclimatize to fluctuating laboratorial conditions other than those naturally found in Mexico.
Collapse
Affiliation(s)
- Edson Franzim-Junior
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Maria Tays Mendes
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | | | - Thiago Alvares da Costa
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Marcos Vinicius Silva
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - César Gómez Hernandez
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Afonso Pelli
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Helioswilton Sales-Campos
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Carlo Jose Freire Oliveira
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, Minas Gerais, Brazil,Corresponding author: Dr Carlo Jose Freire Oliveira, E-mail:
| |
Collapse
|
12
|
Monteiro MF, Lisboa LCO, Carvalho-Costa TM, Nevoa JC, Oliveira CJF, Serrão JE, Souza EA. Morphology of the spermatheca of Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859). BRAZ J BIOL 2018; 79:144-148. [PMID: 29590252 DOI: 10.1590/1519-6984.180932] [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: 06/02/2017] [Accepted: 08/22/2017] [Indexed: 11/22/2022] Open
Abstract
Triatoma lecticularia (Hemiptera: Reduviidae) (Stal, 1859) is a potential vector of Chagas's disease and the comprehension of its reproductive biology is an important tool to control this insect. In the reproductive tract of female insects, the spermatheca plays a crucial role storing male spermatozoa after mating. Whithin insects the spermatheca shows a wide morphological diversity and the analysis of this characteristic can contribute to understand the reproductive biology of the species. This study describes the histology and histochemistry of the spermatheca of T. lecticularia. Females have a pair of elongated spermathecal reservoirs without associated accessory gland. The reservoir opens into the common oviduct via a narrow muscular duct. The reservoir epithelium has single layer of columnar secretory cells. The control of the release of spermatozoa from the spermatheca occurs via the muscular duct. The anatomical features of the spermatheca of T. lecticularia resemble those described of other Reduviidae. However, the histological and histochemical features of spermatheca observed in T. lecticularia were important to explain the maintenance of the viability of the spermatozoa stored.
Collapse
Affiliation(s)
- M F Monteiro
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Viçosa - UFV, Campus Rio Paranaíba, Rodovia MG 230, Km 7, CEP 38810-000, Rio Paranaíba, MG, Brasil
| | - L C O Lisboa
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Viçosa - UFV, Campus Rio Paranaíba, Rodovia MG 230, Km 7, CEP 38810-000, Rio Paranaíba, MG, Brasil
| | - T M Carvalho-Costa
- Laboratório de Imunologia, Universidade Federal do Triângulo Mineiro - UFTM, Campus I, Praça Manoel Terra, 330, 1o Piso, N.Sa. da Abadia, CEP 38025-015, Uberaba, MG, Brasil
| | - J C Nevoa
- Laboratório de Imunologia, Universidade Federal do Triângulo Mineiro - UFTM, Campus I, Praça Manoel Terra, 330, 1o Piso, N.Sa. da Abadia, CEP 38025-015, Uberaba, MG, Brasil
| | - C J F Oliveira
- Laboratório de Imunologia, Universidade Federal do Triângulo Mineiro - UFTM, Campus I, Praça Manoel Terra, 330, 1o Piso, N.Sa. da Abadia, CEP 38025-015, Uberaba, MG, Brasil
| | - J E Serrão
- Departamento de Biologia Geral, Universidade Federal de Viçosa - UFV, Avenida Peter Henry Rolfs, s/no, Campus Universitário, CEP 36570-000, Viçosa, MG, Brasil
| | - E A Souza
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Viçosa - UFV, Campus Rio Paranaíba, Rodovia MG 230, Km 7, CEP 38810-000, Rio Paranaíba, MG, Brasil
| |
Collapse
|
13
|
Carvalho-Costa TM, Mendes MT, da Silva MV, Rodrigues V, Bruschi Thedei GCM, Oliveira CJF, Thedei G. Light-Emitting Diode at 460 ± 20 nm Increases the Production of IL-12 and IL-6 in Murine Dendritic Cells. Photomed Laser Surg 2017. [DOI: 10.1089/pho.2016.4244] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
| | - Maria Tays Mendes
- Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Brazil
| | | | - Virmondes Rodrigues
- Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Brazil
| | | | | | - Geraldo Thedei
- Laboratory of Molecular Biology, University of Uberaba, Uberaba, Brazil
| |
Collapse
|
14
|
Franzim E, Mendes MT, Anhê ACBM, Pelli A, Silva MV, Rodrigues V, Sales-Campos H, Oliveira CJF. Panstrongylus herreri and its ability to develop under fluctuating environmental conditions. Rev Soc Bras Med Trop 2017; 50:436. [PMID: 28700073 DOI: 10.1590/0037-8682-0151-2017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 05/18/2017] [Indexed: 11/22/2022] Open
Affiliation(s)
- Edson Franzim
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - Maria Tays Mendes
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | | | - Afonso Pelli
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - Marcos Vinicius Silva
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - Virmondes Rodrigues
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - Helioswilton Sales-Campos
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - Carlo Jose Freire Oliveira
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| |
Collapse
|
15
|
Junior FE, Mendes MT, Anhê ACBM, Pelli A, Silva MV, Rodrigues V, Sales-Campos H, Oliveira CJF. The development of Panstrongylus herreri under fluctuating environmental conditions. Rev Soc Bras Med Trop 2017; 50:121-125. [PMID: 28327814 DOI: 10.1590/0037-8682-0250-2016] [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] [Received: 06/15/2016] [Accepted: 10/18/2016] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Panstrongylus herreri is a main Chagas disease vector, and its success as a vector stems from its ability to establish domiciliated colonies; we aimed to explore its biology and reproduction. METHODS The average amount of blood ingested and the time from the beginning of a blood meal to the production of feces were recorded. RESULTS Females exhibited a higher blood ingestion rate than males, but similar defecation times and frequencies were observed. CONCLUSIONS Despite the detected decrease in oviposition rates, P. herreri's potential as a Chagas disease vector in environments other than the Amazon forest cannot be discounted.
Collapse
Affiliation(s)
- Franzim Edson Junior
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - Maria Tays Mendes
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | | | - Afonso Pelli
- Instituto de Ciências Biológicas e Naturais, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - Marcos Vinicius Silva
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - Virmondes Rodrigues
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - Helioswilton Sales-Campos
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| | - Carlo Jose Freire Oliveira
- Curso de Pós-Graduação Stricto-sensu em Medicina Tropical e Infectologia, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brasil
| |
Collapse
|
16
|
de Jesus Leite MAF, Penha Silva N, Freire Oliveira CJ, Mariano IM, Sanjuliao Giolo J, Goncalves Costa J, Morais Puga G. Effects of Nonlinear Training with Resistance Exercise on Breast Cancer Survivor with Lymphedema and Hypothyroidism during Adjuvant Hormone Therapy: A Case Study. Womens Health Issues 2017. [DOI: 10.4172/2325-9795.1000269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
17
|
Mendes MT, Carvalho-Costa TM, da Silva MV, Anhê ACBM, Guimarães RM, da Costa TA, Ramirez LE, Rodrigues V, Oliveira CJF. Effect of the saliva from different triatomine species on the biology and immunity of TLR-4 ligand and Trypanosoma cruzi-stimulated dendritic cells. Parasit Vectors 2016; 9:634. [PMID: 27938380 PMCID: PMC5148907 DOI: 10.1186/s13071-016-1890-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 11/16/2016] [Indexed: 02/07/2023] Open
Abstract
Background Triatomines are blood-sucking vectors of Trypanosoma cruzi, the causative agent of Chagas disease. During feeding, triatomines surpass the skin host response through biomolecules present in their saliva. Dendritic cells (DCs) play a crucial role in the induction of the protection to aggressive agents, including blood-sucking arthropods. Here, we evaluated if salivary components of triatomines from different genera evade the host immunity by modulating the biology and the function of LPS- or T. cruzi-stimulated DCs. Methods Saliva of Panstrongylus lignarius, Meccus pallidipennis, Triatoma lecticularia and Rhodnius prolixus were obtained by dissection of salivary glands and the DCs were obtained from the differentiation of mouse bone marrow precursors. Results The differentiation of DCs was inhibited by saliva of all species tested. Saliva differentially inhibited the expression of MHC-II, CD40, CD80 and CD86 in LPS-matured DCs. Except for the saliva of R. prolixus, which induced IL-6 cytokine production, TNF-α, IL-12 and IL-6 were inhibited by the saliva of the other three tested species and IL-10 was increased in all of them. Saliva per se, also induced the production of IL-12, IL-6 and IL-10. Only the saliva of R. prolixus induced DCs apoptosis. The presence of PGE2 was not detected in the saliva of the four triatomines studied. Finally, T. cruzi invasion on DCs is enhanced by the presence of the triatomine saliva. Conclusions These results demonstrate that saliva from different triatomine species exhibit immunomodulatory effects on LPS and T. cruzi-stimulated DCs. These effects could be related to hematophagy and transmission of T. cruzi during feeding. Electronic supplementary material The online version of this article (doi:10.1186/s13071-016-1890-x) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Maria Tays Mendes
- Department of Biological Sciences, University of Texas at El Paso, El Paso, TX, USA.,Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | | | - Marcos Vinicius da Silva
- Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil.
| | | | - Rafaela Mano Guimarães
- Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Thiago Alvares da Costa
- Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Luis Eduardo Ramirez
- Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Virmondes Rodrigues
- Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | | |
Collapse
|
18
|
da Silva TA, Lemes RM, Oliveira CJF, Almeida ADS, Chica JEL. Data on morphometric analysis of the pancreatic islets from C57BL/6 and BALB/c mice. Data Brief 2016; 8:1094-8. [PMID: 27508270 PMCID: PMC4971134 DOI: 10.1016/j.dib.2016.07.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 04/22/2016] [Revised: 07/02/2016] [Accepted: 07/14/2016] [Indexed: 10/29/2022] Open
Abstract
The endocrine portion of the pancreas, which is characterized by pancreatic islets, has been widely investigated among different species. The BALB/c and C57BL/6 mice are extensively used in experimental research, and the morphometric differences in the pancreatic islets of these animals have not been evaluated so far. Thus, our data have a comparative perspective related to the morphometric analysis of area, diameters, circularity, and density of pancreatic islets from BALB/c and C57BL/6 mice. The data presented here are focused to evaluate the differences in morphology of pancreatic islets of two common laboratory mouse strains.
Collapse
Affiliation(s)
- Thiago Aparecido da Silva
- Departamento de Biologia Celular e Molecular e Bioagentes Patogênicos da Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Robertha Mariana Lemes
- Labotatório de Microbiologia Celular, Instituto Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - Carlo Jose Freire Oliveira
- Departamento de Microbiologia, Imunologia e Parasitologia - Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil
| | - Aline da Silva Almeida
- Curso de Pós-Graduação em Ciências da Saúde da Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil
| | - Javier Emílio Lazo Chica
- Curso de Pós-Graduação em Ciências da Saúde da Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil
| |
Collapse
|
19
|
Sousa ACP, Szabó MPJ, Oliveira CJF, Silva MJB. Exploring the anti-tumoral effects of tick saliva and derived components. Toxicon 2015; 102:69-73. [DOI: 10.1016/j.toxicon.2015.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 04/29/2015] [Accepted: 06/11/2015] [Indexed: 01/11/2023]
|
20
|
Carvalho-Costa TM, Mendes MT, da Silva MV, da Costa TA, Tiburcio MGS, Anhê ACBM, Rodrigues V, Oliveira CJF. Immunosuppressive effects of Amblyomma cajennense tick saliva on murine bone marrow-derived dendritic cells. Parasit Vectors 2015; 8:22. [PMID: 25586117 PMCID: PMC4304185 DOI: 10.1186/s13071-015-0634-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 01/01/2015] [Indexed: 11/25/2022] Open
Abstract
Background Dendritic cells (DCs) are professional antigen-presenting cells with vital roles in the activation of host immunity. Ticks are bloodsucking arthropods that secrete bioactive compounds with immunomodulatory properties via their saliva. It is known that some tick species modulate the biology of DCs with different intensities; however, studies on Amblyomma cajennense, the Cayenne tick, have not yet been performed, although this species is considered one of the most capable of modulating immune responses of different hosts. Methods Engorged female ticks were stimulated with dopamine to induce salivation, and saliva was pooled. The effects of tick saliva on the biology of dendritic cells were assessed by examining DC differentiation, maturation, migration, cellular viability, cytokine production and expression of surface markers by flow cytometry and ELISA. Competitive enzyme immunoassays (EIA) were used to measure saliva prostaglandin-E2 (PGE2). Statistical significance was determined by ANOVA followed by Tukey’s post-test or by the Kruskal-Wallis test with the Dunns post-test. Results In this work, we demonstrated that the presence of A. cajennense saliva to bone marrow cultures inhibit DC differentiation. This inhibition was not accompanied by inhibition or induction of stimulatory and co-stimulatory molecules such as MHC-II, CD40, CD80 or CD86. Immature and mature DCs that were pre-exposed to saliva showed reduced migration toward the chemokines RANTES and MIP-3β. This inhibition was associated to a reduced expression of CCR5 (the receptor for RANTES) or CCR7 (the receptor for MIP-3β) induced by the presence of saliva in the cultures. Tick saliva also inhibited IL-12p40, IL-6 and TNF-α in a concentration-dependent manner while potentiating IL-10 cytokine production by DCs stimulated with Toll-like receptor-4 ligand. Additionally, A. cajennense tick saliva inhibited the expression of CD40 and CD86 in mature DCs while potentiating the expression of PD-L1. PGE2 was detected as one of the constituents of saliva at a concentration of ~ 80 ng/ml, and we believe that most of the results reported herein are due to the presence of PGE2. Conclusions These results help to understand the tick-host interaction and demonstrate that A. cajennense ticks appear to have mechanisms for modulating host immune cells, including DCs.
Collapse
Affiliation(s)
- Tamires Marielem Carvalho-Costa
- Graduate Course of Physiological Sciences, Laboratory of Immunology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil.
| | - Maria Tays Mendes
- Graduate Course of Tropical Medicine and Infectology, Laboratory of Immunology, Federal University of Triângulo Mineiro, Av. Getúlio Guaritá S/N, Uberaba, Minas Gerais, 38015-050, Brazil.
| | - Marcos Vinicius da Silva
- Graduate Course of Tropical Medicine and Infectology, Laboratory of Immunology, Federal University of Triângulo Mineiro, Av. Getúlio Guaritá S/N, Uberaba, Minas Gerais, 38015-050, Brazil.
| | - Thiago Alvares da Costa
- Graduate Course of Tropical Medicine and Infectology, Laboratory of Immunology, Federal University of Triângulo Mineiro, Av. Getúlio Guaritá S/N, Uberaba, Minas Gerais, 38015-050, Brazil.
| | - Monique Gomes Salles Tiburcio
- Graduate Course of Tropical Medicine and Infectology, Laboratory of Immunology, Federal University of Triângulo Mineiro, Av. Getúlio Guaritá S/N, Uberaba, Minas Gerais, 38015-050, Brazil.
| | | | - Virmondes Rodrigues
- Graduate Course of Tropical Medicine and Infectology, Laboratory of Immunology, Federal University of Triângulo Mineiro, Av. Getúlio Guaritá S/N, Uberaba, Minas Gerais, 38015-050, Brazil.
| | - Carlo Jose Freire Oliveira
- Graduate Course of Tropical Medicine and Infectology, Laboratory of Immunology, Federal University of Triângulo Mineiro, Av. Getúlio Guaritá S/N, Uberaba, Minas Gerais, 38015-050, Brazil.
| |
Collapse
|
21
|
Lemos JRD, Rodrigues WF, Miguel CB, Parreira RC, Miguel RB, de Paula Rogerio A, Oliveira CJF, Chica JEL. Influence of parasite load on renal function in mice acutely infected with Trypanosoma cruzi. PLoS One 2013; 8:e71772. [PMID: 23951243 PMCID: PMC3741127 DOI: 10.1371/journal.pone.0071772] [Citation(s) in RCA: 14] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Accepted: 07/07/2013] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Chagas disease is a neglected tropical disease caused by Trypanosoma cruzi. Despite the vast number of studies evaluating the pathophysiological mechanisms of the disease, the influence of parasite burden on kidney lesions remains unclear. Thus, the main goal of this work was to evaluate the effect of T. cruzi infection on renal function and determine whether there was a correlation between parasite load and renal injury using an acute experimental model of the disease. METHODOLOGY/PRINCIPAL FINDINGS Low, medium and high parasite loads were generated by infecting C57BL/6 mice with 300 (low), 3,000 (medium) or 30,000 (high) numbers of "Y" strain trypomastigotes. We found that mice infected with T. cruzi trypomastigotes show increased renal injury. The infection resulted in reduced urinary excretion and creatinine clearance. We also observed a marked elevation in the ratio of urine volume to kidney and body weight, blood urea nitrogen, chloride ion, nitric oxide, pro- and anti-inflammatory cytokines and the number of leukocytes in the blood and/or renal tissues of infected mice. Additionally, we observed the presence of the parasite in the cortical/medullary and peri-renal region, an increase of inflammatory infiltrate and of vascular permeability of the kidney. Overall, most renal changes occurred mainly in animals infected with high parasitic loads. CONCLUSIONS/SIGNIFICANCE These data demonstrate that T. cruzi impairs kidney function, and this impairment is more evident in mice infected with high parasitic loads. Moreover, these data suggest that, in addition to the extensively studied cardiovascular effects, renal injury should be regarded as an important indicator for better understanding the pan-infectivity of the parasite and consequently for understanding the disease in experimental models.
Collapse
Affiliation(s)
- Juliana Regina Dias Lemos
- Postgraduate Course of Pathology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | | | - Camila Botelho Miguel
- Postgraduate Course of Pathology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Ricardo Cambraia Parreira
- Institute of Biological and Natural Sciences, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Renata Botelho Miguel
- Department Nutrition and Dietetics, Portuguese Beneficent Hospital of Uberaba, Uberaba, Minas Gerais, Brazil
| | - Alexandre de Paula Rogerio
- Laboratory of Experimental Immunopharmacology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
- Postgraduate Course of Tropical Medicine, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Carlo Jose Freire Oliveira
- Institute of Biological and Natural Sciences, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
- Postgraduate Course of Tropical Medicine, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Javier Emilio Lazo Chica
- Postgraduate Course of Pathology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
- Institute of Biological and Natural Sciences, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
- * E-mail:
| |
Collapse
|