1
|
Cordeiro KC, Scaffo J, Flexa BN, Gama CCA, Ferreira MA, Cruz RAS, Aguiar-Alves F, Rocha L, Machado FP, Fernandes CP. Characterization of bergamot essential oil: chemical, microbiological and colloidal aspects. BRAZ J BIOL 2024; 83:e275622. [PMID: 38422264 DOI: 10.1590/1519-6984.275622] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 12/12/2023] [Indexed: 03/02/2024] Open
Abstract
Citrus bergamia is a citric species known as bergamot. The species is widely used due to its derivatives, such as juices, extracts, and essential oil. Specifically, the bergamot essential oil (BEO) is of great interest, with a chemical composition rich in terpenes and esters. Considering its chemical composition, bioactivity, and great economic potential, the characterization of BEO should be studied. However, this essential oil is almost unexplored in terms of a characterization associated with colloids. Chemical characterization was carried out by gas-chromatography coupled to a mass spectrometer and by gas-chromatography coupled to a flame ionization detector. Antibacterial activity against Staphylococcus aureus and Escherichia coli was carried out to confirm the bioactivity of this important essential oil. Dynamic light scattering analysis was performed to create a pattern of droplet size distribution of BEO. Major compounds of BEO were linalyl acetate, limonene, and linalool. The BEO was active against E. coli and presented a MIC value of 2.000 µg/mL, while values of MIC and MBC higher than 2.000 µg/mL were observed for S. aureus. The dynamic light scattering analysis revealed a mean hydrodynamic diameter of 65.7 ± 2.2 nm. After a 1:10 dilution it was observed reduction of mean diameter and enhancement of the percentagem of low size droplets, resepctively 44.1 ± 1.2 nm and 14.5 ± 0.5 nm (28.8 ± 1.2%). Higher droplets and reduced polydispersity index were observed after 1:100 dilution. In the present study, the chemical characterization was in accordance with the species, as the characteristic chemical markers of the species were found. Moreover, it has presented antibacterial activity as expected for the BEO. The analysis of the colloid showed a pattern of droplet size distribution following the Ostwald ripening mechanism after dilution.
Collapse
Affiliation(s)
- K C Cordeiro
- Universidade Federal do Amapá - UNIFAP, Programa de Pós-graduação em Ciências Farmacêuticas, Macapá, AP, Brasil
- Universidade Federal do Amapá - UNIFAP, Laboratório de Nanobiotecnologia Fitofarmacêutica, Macapá, AP, Brasil
| | - J Scaffo
- Universidade Federal Fluminense - UFF, Laboratório de Epidemiologia Molecular e Biotecnologia, Niterói, RJ, Brasil
- Universidade Federal Fluminense - UFF, Programa de Pós-graduação em Ciências Aplicadas à Produtos para Saúde, Niterói, RJ, Brasil
| | - B N Flexa
- Universidade Federal do Amapá - UNIFAP, Programa de Pós-graduação em Ciências Farmacêuticas, Macapá, AP, Brasil
- Universidade Federal do Amapá - UNIFAP, Laboratório de Nanobiotecnologia Fitofarmacêutica, Macapá, AP, Brasil
| | - C C A Gama
- Universidade Federal do Amapá - UNIFAP, Programa de Pós-graduação em Ciências Farmacêuticas, Macapá, AP, Brasil
- Universidade Federal do Amapá - UNIFAP, Laboratório de Nanobiotecnologia Fitofarmacêutica, Macapá, AP, Brasil
| | - M A Ferreira
- Universidade Federal do Amapá - UNIFAP, Programa de Pós-graduação em Ciências Farmacêuticas, Macapá, AP, Brasil
- Universidade Federal do Amapá - UNIFAP, Laboratório de Nanobiotecnologia Fitofarmacêutica, Macapá, AP, Brasil
| | - R A S Cruz
- Universidade Federal do Amapá - UNIFAP, Programa de Pós-graduação em Ciências Farmacêuticas, Macapá, AP, Brasil
- Universidade Federal do Amapá - UNIFAP, Laboratório de Nanobiotecnologia Fitofarmacêutica, Macapá, AP, Brasil
| | - F Aguiar-Alves
- Universidade Federal Fluminense - UFF, Laboratório de Epidemiologia Molecular e Biotecnologia, Niterói, RJ, Brasil
- Palm Beach Atlantic University, Lloyd L. Gregory School of Pharmacy, Department of Pharmaceutical Sciences, Florida, FL, United States
| | - L Rocha
- Universidade Federal Fluminense - UFF, Laboratório de Tecnologia de Produtos Naturais, Niterói, RJ, Brasil
| | - F P Machado
- Universidade Federal Fluminense - UFF, Laboratório de Tecnologia de Produtos Naturais, Niterói, RJ, Brasil
| | - C P Fernandes
- Universidade Federal do Amapá - UNIFAP, Programa de Pós-graduação em Ciências Farmacêuticas, Macapá, AP, Brasil
- Universidade Federal do Amapá - UNIFAP, Laboratório de Nanobiotecnologia Fitofarmacêutica, Macapá, AP, Brasil
- Universidade Federal Fluminense - UFF, Laboratório de Epidemiologia Molecular e Biotecnologia, Niterói, RJ, Brasil
| |
Collapse
|
2
|
Harrington TC, Ferreira MA, Somasekhara YM, Vickery J, Mayers CG. An expanded concept of Ceratocystis manginecans and five new species in the Latin American clade of Ceratocystis. Mycologia 2024; 116:184-212. [PMID: 38127644 DOI: 10.1080/00275514.2023.2284070] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 11/13/2023] [Indexed: 12/23/2023]
Abstract
The genus Ceratocystis contains a number of emerging plant pathogens, mostly members of the Latin American Clade (LAC), in which there are several unresolved taxonomic controversies. Among the most important are Brazilian pathogens in the C. fimbriata complex, C. manginecans and C. eucalypticola. Representatives of C. manginecans and C. eucalypticola from India and China, respectively, were shown to be fully interfertile in laboratory matings, and hybrids between the putative species were identified on Punica in India. An Indian tester strain was sexually compatible with representatives of what has been considered C. fimbriata on numerous hosts across Brazil. In this revision of the LAC, the name C. fimbriata is restricted to the widely dispersed Ipomoea strain, and C. manginecans is recognized as a Brazilian species that is important on Mangifera, Eucalyptus, and many other crops. C. mangivora and C. mangicola are also considered synonyms of C. manginecans. Based on phylogenetics and mating studies, two other Brazilian species are recognized: C. atlantica, sp. nov., and C. alfenasii, sp. nov., each with wide host ranges. Three new Caribbean species are recognized based on phylogenetics and earlier inoculation studies: C. costaricensis, sp. nov., on Coffea, C. cubensis, sp. nov., on Spathodea, and C. xanthosomatis, sp. nov., on the vegetatively propagated aroids Xanthosoma and Syngonium. Some of the other Ceratocystis species were based primarily on unique internal transcribed spacer (ITS) rDNA sequences, but the unreliability of rDNA sequences was demonstrated when intraspecific crossing of isolates with differing ITS sequences generated single-ascospore progeny with intragenomic variation in ITS sequences and others with new ITS sequences. Species recognition in Ceratocystis should use phenotype, including intersterility tests, to help identify which lineages are species. Although some species remain under-studied, we recognize 16 species in the LAC, all believed to be native to Latin America, the Caribbean region, or eastern USA.
Collapse
Affiliation(s)
- T C Harrington
- Department of Plant Pathology, Entomology and Microbiology, Iowa State University, Ames, lowa 50011
| | - M A Ferreira
- Department of Plant Pathology, Universidade Federal de Lavras, Lavras 37203-202
| | - Y M Somasekhara
- Department of Plant Pathology, University of Agricultural Sciences, Bangalore 506 605
| | - Jenna Vickery
- Department of Plant Pathology, Entomology and Microbiology, Iowa State University, Ames, lowa 50011
| | - Chase G Mayers
- School of Integrative Plant Science, Cornell University, Ithaca, New York 14850
| |
Collapse
|
3
|
Oliveira JR, Ruiz CMR, Machado RRG, Magawa JY, Daher IP, Urbanski AH, Schmitz GJH, Arcuri HA, Ferreira MA, Sasahara GL, de Medeiros GX, Júnior RCVS, Durigon EL, Boscardin SB, Rosa DS, Schechtman D, Nakaya HI, Cunha-Neto E, Gadermaier G, Kalil J, Coelho V, Santos KS. Immunodominant antibody responses directed to SARS-CoV-2 hotspot mutation sites and risk of immune escape. Front Immunol 2023; 13:1010105. [PMID: 36685521 PMCID: PMC9849925 DOI: 10.3389/fimmu.2022.1010105] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 12/13/2022] [Indexed: 01/07/2023] Open
Abstract
Introduction Considering the likely need for the development of novel effective vaccines adapted to emerging relevant CoV-2 variants, the increasing knowledge of epitope recognition profile among convalescents and afterwards vaccinated with identification of immunodominant regions may provide important information. Methods We used an RBD peptide microarray to identify IgG and IgA binding regions in serum of 71 COVID-19 convalescents and 18 vaccinated individuals. Results We found a set of immunodominant RBD antibody epitopes, each recognized by more than 30% of the tested cohort, that differ among the two different groups and are within conserved regions among betacoronavirus. Of those, only one peptide, P44 (S415-429), recognized by 68% of convalescents, presented IgG and IgA antibody reactivity that positively correlated with nAb titers, suggesting that this is a relevant RBD region and a potential target of IgG/IgA neutralizing activity. Discussion This peptide is localized within the area of contact with ACE-2 and harbors the mutation hotspot site K417 present in gamma (K417T), beta (K417N), and omicron (K417N) variants of concern. The epitope profile of vaccinated individuals differed from convalescents, with a more diverse repertoire of immunodominant peptides, recognized by more than 30% of the cohort. Noteworthy, immunodominant regions of recognition by vaccinated coincide with mutation sites at Omicron BA.1, an important variant emerging after massive vaccination. Together, our data show that immune pressure induced by dominant antibody responses may favor hotspot mutation sites and the selection of variants capable of evading humoral response.
Collapse
Affiliation(s)
- Jamille Ramos Oliveira
- Departamento de Clínica Médica, Disciplina de Alergia e Imunologia Clínica, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
- Instituto de Investigação em Imunologia–Instituto Nacional de Ciências e Tecnologia – instituto de investigação em imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil
| | - Cesar Manuel Remuzgo Ruiz
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
| | | | - Jhosiene Yukari Magawa
- Departamento de Clínica Médica, Disciplina de Alergia e Imunologia Clínica, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
- Instituto de Investigação em Imunologia–Instituto Nacional de Ciências e Tecnologia – instituto de investigação em imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil
| | - Isabela Pazotti Daher
- Departamento de Clínica Médica, Disciplina de Alergia e Imunologia Clínica, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
- Instituto de Investigação em Imunologia–Instituto Nacional de Ciências e Tecnologia – instituto de investigação em imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil
| | - Alysson Henrique Urbanski
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Gabriela Justamante Händel Schmitz
- Departamento de Clínica Médica, Disciplina de Alergia e Imunologia Clínica, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
| | - Helen Andrade Arcuri
- Centro de Estudos de Insetos Sociais, Departamento de Biologia, Instituto de Biociências de Rio Claro, Universidade Estadual Paulista, Rio Claro, SP, Brazil
| | - Marcelo Alves Ferreira
- Laboratório de Biologia Celular, Laboratório de Investigação Médica 59 (LIM59), Departamento de Patologia, Faculdade de Medicina Faculdade de Medicina da Universidade de São Paulo (FMUSP), Universidade de São Paulo, São Paulo, Brazil
| | - Greyce Luri Sasahara
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
| | - Giuliana Xavier de Medeiros
- Departamento de Clínica Médica, Disciplina de Alergia e Imunologia Clínica, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - Roberto Carlos Vieira Silva Júnior
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
| | - Edison Luiz Durigon
- Departamento de Microbiologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
- Plataforma Científica Pasteur-USP, São Paulo, SP, Brazil
| | - Silvia Beatriz Boscardin
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Daniela Santoro Rosa
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de São Paulo (UNIFESP/EPM, São Paulo, SP, Brazil
| | - Deborah Schechtman
- Departamento de Bioquímica, instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Helder I. Nakaya
- Plataforma Científica Pasteur-USP, São Paulo, SP, Brazil
- Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Edecio Cunha-Neto
- Departamento de Clínica Médica, Disciplina de Alergia e Imunologia Clínica, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
- Instituto de Investigação em Imunologia–Instituto Nacional de Ciências e Tecnologia – instituto de investigação em imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil
| | - Gabriele Gadermaier
- Department of Biosciences and Medical Biology, Paris Lodron University Salzburg, Salzburg, Brazil
| | - Jorge Kalil
- Departamento de Clínica Médica, Disciplina de Alergia e Imunologia Clínica, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
- Instituto de Investigação em Imunologia–Instituto Nacional de Ciências e Tecnologia – instituto de investigação em imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil
| | - Verônica Coelho
- Departamento de Clínica Médica, Disciplina de Alergia e Imunologia Clínica, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
- Instituto de Investigação em Imunologia–Instituto Nacional de Ciências e Tecnologia – instituto de investigação em imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil
| | - Keity Souza Santos
- Departamento de Clínica Médica, Disciplina de Alergia e Imunologia Clínica, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
- Laboratório de Imunologia, LIM19, Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, (HCFMUSP) São Paulo da Universidade de São Paulo, São Paulo, Brazil
- Instituto de Investigação em Imunologia–Instituto Nacional de Ciências e Tecnologia – instituto de investigação em imunologia - Instituto Nacional de Ciências e Tecnologia (iii-INCT), São Paulo, Brazil
| |
Collapse
|
4
|
Souza BD, Ferreira MA, Kalil J, Giavina-Bianchi P, Agondi RC. Development, validation and application of a questionnaire to qualify the indoor environmental exposure of patients with respiratory allergy. J Asthma 2022; 60:1191-1201. [PMID: 36264019 DOI: 10.1080/02770903.2022.2138432] [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] [Indexed: 02/06/2023]
Abstract
Objective: Environmental control includes measures to prevent exposure to common aeroallergens in an individual's home. Questionnaires are part of the clinical practice of health assessment, and are also widely used in research. Our aim was to develop and validate a questionnaire to identify possible sources of aeroallergens present in the indoor environment. Methods: This study describes the development, validation and application of a questionnaire. For content validation the Content Validation Index and Ordinal Cronbach's Alpha Index have been used; Polychoric Correlations for the agreement between judges; and an Exploratory Factor Analysis for the structure of the questionnaire, while for reliability assessment, Intraclass Correlation Coefficient has been applied. Results: Twenty-one doctors participated as judges to validate the questionnaire, which 204 patients answered. The Content Validity Index for all the questions on the "Clarity" aspect was 0.846 ± 0.152 and on the "Relevance" aspect, 0.954 ± 0.080. Cronbach's alpha coefficient for the "Clarity" aspect was 0.88 with a 95% confidence intervals (CI) and the "Relevance" aspect, 0.94 with a 95% CI. The average Intraclass Correlation Coefficient was 0.94 and all the F tests were highly significant. Conclusions: The questionnaire developed by our group was considered valid and reliable, and is capable of portraying the home environment without the need for a personal visit to the patient's home. This questionnaire would be a good tool to use in research or during patient consultations to assess the patient's home environment, as this latter assessment is essential for the management of patients with respiratory allergies.
Collapse
Affiliation(s)
- Bárbara de Souza
- Clinical Immunology and Allergy Division, University of Sao Paulo School of Medicine, São Paulo, Brazil
| | | | - Jorge Kalil
- Clinical Immunology and Allergy Division, University of Sao Paulo School of Medicine, São Paulo, Brazil.,Laboratory of Immunology (LIM19), Heart Institute (InCor), School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Pedro Giavina-Bianchi
- Clinical Immunology and Allergy Division, University of Sao Paulo School of Medicine, São Paulo, Brazil
| | - Rosana Câmara Agondi
- Clinical Immunology and Allergy Division, University of Sao Paulo School of Medicine, São Paulo, Brazil.,Laboratory of Immunology (LIM19), Heart Institute (InCor), School of Medicine, University of São Paulo, São Paulo, Brazil
| |
Collapse
|
5
|
Fridman C, Ferreira MA, Marano LA, Forlenza BS. Analysis of genetic polymorphisms associated with the presence of freckles for phenotypic prediction. Forensic Science International: Genetics Supplement Series 2022. [DOI: 10.1016/j.fsigss.2022.09.010] [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: 11/29/2022]
|
6
|
Temerozo JR, Fintelman-Rodrigues N, Dos Santos MC, Hottz ED, Sacramento CQ, de Paula Dias da Silva A, Mandacaru SC, Dos Santos Moraes EC, Trugilho MRO, Gesto JSM, Ferreira MA, Saraiva FB, Palhinha L, Martins-Gonçalves R, Azevedo-Quintanilha IG, Abrantes JL, Righy C, Kurtz P, Jiang H, Tan H, Morel C, Bou-Habib DC, Bozza FA, Bozza PT, Souza TML. Human endogenous retrovirus K in the respiratory tract is associated with COVID-19 physiopathology. Microbiome 2022; 10:65. [PMID: 35459226 PMCID: PMC9024070 DOI: 10.1186/s40168-022-01260-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 03/15/2022] [Indexed: 05/04/2023]
Abstract
BACKGROUND Critically ill 2019 coronavirus disease (COVID-19) patients under invasive mechanical ventilation (IMV) are 10 to 40 times more likely to die than the general population. Although progression from mild to severe COVID-19 has been associated with hypoxia, uncontrolled inflammation, and coagulopathy, the mechanisms involved in the progression to severity are poorly understood. METHODS The virome of tracheal aspirates (TA) from 25 COVID-19 patients under IMV was assessed through unbiased RNA sequencing (RNA-seq), and correlation analyses were conducted using available clinical data. Unbiased sequences from nasopharyngeal swabs (NS) from mild cases and TA from non-COVID patients were included in our study for further comparisons. RESULTS We found higher levels and differential expression of human endogenous retrovirus K (HERV-K) genes in TA from critically ill and deceased patients when comparing nasopharyngeal swabs from mild cases to TA from non-COVID patients. In critically ill patients, higher HERV-K levels were associated with early mortality (within 14 days of diagnosis) in the intensive care unit. Increased HERV-K expression in deceased patients was associated with IL-17-related inflammation, monocyte activation, and an increased consumption of clotting/fibrinolysis factors. Moreover, increased HERV-K expression was detected in human primary monocytes from healthy donors after experimental SARS-CoV-2 infection in vitro. CONCLUSION Our data implicate the levels of HERV-K transcripts in the physiopathology of COVID-19 in the respiratory tract of patients under invasive mechanical ventilation. Video abstract.
Collapse
Affiliation(s)
- Jairo R Temerozo
- Laboratory on Thymus Research, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Neuroimmunomodulation (INCT/NIM), Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- Center for Technological Development in Health (CDTS), National Institute for Science and Technology on Innovation on Disease Of Neglected Poppulations (INCT/IDPN), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Natalia Fintelman-Rodrigues
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- Center for Technological Development in Health (CDTS), National Institute for Science and Technology on Innovation on Disease Of Neglected Poppulations (INCT/IDPN), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Monique Cristina Dos Santos
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Eugenio D Hottz
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- Laboratory of Immunothrombosis, Department of Biochemistry, Federal University of Juiz de Fora (UFJF), Juiz de Fora, Minas Gerais, Brazil
| | - Carolina Q Sacramento
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- Center for Technological Development in Health (CDTS), National Institute for Science and Technology on Innovation on Disease Of Neglected Poppulations (INCT/IDPN), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Aline de Paula Dias da Silva
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- Center for Technological Development in Health (CDTS), National Institute for Science and Technology on Innovation on Disease Of Neglected Poppulations (INCT/IDPN), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Samuel Coelho Mandacaru
- Center for Technological Development in Health (CDTS), National Institute for Science and Technology on Innovation on Disease Of Neglected Poppulations (INCT/IDPN), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- Laboratory of Toxinology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Emilly Caroline Dos Santos Moraes
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- Laboratory of Toxinology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Monique R O Trugilho
- Center for Technological Development in Health (CDTS), National Institute for Science and Technology on Innovation on Disease Of Neglected Poppulations (INCT/IDPN), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- Laboratory of Toxinology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - João S M Gesto
- Center for Technological Development in Health (CDTS), National Institute for Science and Technology on Innovation on Disease Of Neglected Poppulations (INCT/IDPN), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Marcelo Alves Ferreira
- Center for Technological Development in Health (CDTS), National Institute for Science and Technology on Innovation on Disease Of Neglected Poppulations (INCT/IDPN), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Felipe Betoni Saraiva
- Instituto de Tecnologia em Imunobiológicos (Bio-Manguinhos), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Lohanna Palhinha
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Remy Martins-Gonçalves
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | | | - Juliana L Abrantes
- Instituto de Ciências Biomédicas, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Cássia Righy
- Paulo Niemeyer State Brain Institute (IECPN), Rio de Janeiro, RJ, Brazil
- Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Pedro Kurtz
- Paulo Niemeyer State Brain Institute (IECPN), Rio de Janeiro, RJ, Brazil
- D'Or Institute for Research and Education, Rio de Janeiro, RJ, Brazil
| | - Hui Jiang
- MGI Tech Co. Ltd, Building No.11, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, China
| | - Hongdong Tan
- MGI Tech Co. Ltd, Building No.11, Beishan Industrial Zone, Yantian District, Shenzhen, 518083, China
| | - Carlos Morel
- Center for Technological Development in Health (CDTS), National Institute for Science and Technology on Innovation on Disease Of Neglected Poppulations (INCT/IDPN), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Dumith Chequer Bou-Habib
- Laboratory on Thymus Research, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Neuroimmunomodulation (INCT/NIM), Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Fernando A Bozza
- Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
- D'Or Institute for Research and Education, Rio de Janeiro, RJ, Brazil
| | - Patrícia T Bozza
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Thiago Moreno L Souza
- Laboratory of Immunopharmacology, Oswaldo Cruz Institute (IOC), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil.
- Center for Technological Development in Health (CDTS), National Institute for Science and Technology on Innovation on Disease Of Neglected Poppulations (INCT/IDPN), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, RJ, Brazil.
| |
Collapse
|
7
|
Sacramento CQ, Fintelman-Rodrigues N, Temerozo JR, Da Silva ADPD, Dias SDSG, da Silva CDS, Ferreira AC, Mattos M, Pão CRR, de Freitas CS, Soares VC, Hoelz LVB, Fernandes TVA, Branco FSC, Bastos MM, Boechat N, Saraiva FB, Ferreira MA, Jockusch S, Wang X, Tao C, Chien M, Xie W, Patel D, Garzia A, Tuschl T, Russo JJ, Rajoli RKR, Pedrosa CSG, Vitória G, Souza LRQ, Goto-Silva L, Guimarães MZ, Rehen SK, Owen A, Bozza FA, Bou-Habib DC, Ju J, Bozza PT, Souza TML. In vitro antiviral activity of the anti-HCV drugs daclatasvir and sofosbuvir against SARS-CoV-2, the aetiological agent of COVID-19. J Antimicrob Chemother 2021; 76:1874-1885. [PMID: 33880524 PMCID: PMC8083231 DOI: 10.1093/jac/dkab072] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 02/10/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Current approaches of drug repurposing against COVID-19 have not proven overwhelmingly successful and the SARS-CoV-2 pandemic continues to cause major global mortality. SARS-CoV-2 nsp12, its RNA polymerase, shares homology in the nucleotide uptake channel with the HCV orthologue enzyme NS5B. Besides, HCV enzyme NS5A has pleiotropic activities, such as RNA binding, that are shared with various SARS-CoV-2 proteins. Thus, anti-HCV NS5B and NS5A inhibitors, like sofosbuvir and daclatasvir, respectively, could be endowed with anti-SARS-CoV-2 activity. METHODS SARS-CoV-2-infected Vero cells, HuH-7 cells, Calu-3 cells, neural stem cells and monocytes were used to investigate the effects of daclatasvir and sofosbuvir. In silico and cell-free based assays were performed with SARS-CoV-2 RNA and nsp12 to better comprehend the mechanism of inhibition of the investigated compounds. A physiologically based pharmacokinetic model was generated to estimate daclatasvir's dose and schedule to maximize the probability of success for COVID-19. RESULTS Daclatasvir inhibited SARS-CoV-2 replication in Vero, HuH-7 and Calu-3 cells, with potencies of 0.8, 0.6 and 1.1 μM, respectively. Although less potent than daclatasvir, sofosbuvir alone and combined with daclatasvir inhibited replication in Calu-3 cells. Sofosbuvir and daclatasvir prevented virus-induced neuronal apoptosis and release of cytokine storm-related inflammatory mediators, respectively. Sofosbuvir inhibited RNA synthesis by chain termination and daclatasvir targeted the folding of secondary RNA structures in the SARS-CoV-2 genome. Concentrations required for partial daclatasvir in vitro activity are achieved in plasma at Cmax after administration of the approved dose to humans. CONCLUSIONS Daclatasvir, alone or in combination with sofosbuvir, at higher doses than used against HCV, may be further fostered as an anti-COVID-19 therapy.
Collapse
Affiliation(s)
- Carolina Q Sacramento
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation in Diseases of Neglected Populations (INCT/IDPN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Natalia Fintelman-Rodrigues
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation in Diseases of Neglected Populations (INCT/IDPN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Jairo R Temerozo
- Laboratório de Pesquisas sobre o Timo, IOC, Fiocruz, Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Neuroimmunomodulation (INCT/NIM), IOC, Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Aline de Paula Dias Da Silva
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation in Diseases of Neglected Populations (INCT/IDPN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Suelen da Silva Gomes Dias
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Carine Dos Santos da Silva
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation in Diseases of Neglected Populations (INCT/IDPN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - André C Ferreira
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation in Diseases of Neglected Populations (INCT/IDPN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
- Universidade Iguaçu, Nova Iguaçu, RJ, Brazil
| | - Mayara Mattos
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation in Diseases of Neglected Populations (INCT/IDPN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Camila R R Pão
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Caroline S de Freitas
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation in Diseases of Neglected Populations (INCT/IDPN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Vinicius Cardoso Soares
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
| | | | - Tácio Vinício Amorim Fernandes
- Instituto de Tecnologia de Fármacos (Farmanguinhos), Fiocruz, Rio de Janeiro, RJ, Brazil
- Laboratório de Macromoléculas, Diretoria de Metrologia Aplicada às Ciências da Vida, Instituto Nacional de Metrologia, Qualidade e Tecnologia-INMETRO, Duque de Caxias, RJ 25250-020, Brazil
| | | | - Mônica Macedo Bastos
- Instituto de Tecnologia de Fármacos (Farmanguinhos), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Núbia Boechat
- Instituto de Tecnologia de Fármacos (Farmanguinhos), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Felipe B Saraiva
- Instituto de Tecnologia em Imunobiológicos (Bio-Manguinhos), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Marcelo Alves Ferreira
- National Institute for Science and Technology on Innovation in Diseases of Neglected Populations (INCT/IDPN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
- Instituto de Tecnologia em Imunobiológicos (Bio-Manguinhos), Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Steffen Jockusch
- Center for Genome Technology and Biomolecular Engineering, Columbia University, New York, NY 10027, USA
- Department of Chemistry, Columbia University, New York, NY 10027, USA
| | - Xuanting Wang
- Center for Genome Technology and Biomolecular Engineering, Columbia University, New York, NY 10027, USA
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA
| | - Chuanjuan Tao
- Center for Genome Technology and Biomolecular Engineering, Columbia University, New York, NY 10027, USA
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA
| | - Minchen Chien
- Center for Genome Technology and Biomolecular Engineering, Columbia University, New York, NY 10027, USA
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA
| | - Wei Xie
- Laboratory of Structural Biology, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA
| | - Dinshaw Patel
- Laboratory of Structural Biology, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA
| | - Aitor Garzia
- Laboratory of RNA Molecular Biology, Rockefeller University, New York, NY 10065, USA
| | - Thomas Tuschl
- Laboratory of RNA Molecular Biology, Rockefeller University, New York, NY 10065, USA
| | - James J Russo
- Center for Genome Technology and Biomolecular Engineering, Columbia University, New York, NY 10027, USA
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA
| | - Rajith K R Rajoli
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L7 3NY, UK
| | | | | | | | | | - Marilia Zaluar Guimarães
- Instituto D'Or de Pesquisa e Ensino, Rio de Janeiro, RJ, Brazil
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Stevens K Rehen
- Instituto D'Or de Pesquisa e Ensino, Rio de Janeiro, RJ, Brazil
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Andrew Owen
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool L7 3NY, UK
| | - Fernando A Bozza
- Instituto D'Or de Pesquisa e Ensino, Rio de Janeiro, RJ, Brazil
- Instituto Nacional de Infectologia Evandro Chagas, Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Dumith Chequer Bou-Habib
- Laboratório de Pesquisas sobre o Timo, IOC, Fiocruz, Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Neuroimmunomodulation (INCT/NIM), IOC, Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Jingyue Ju
- Center for Genome Technology and Biomolecular Engineering, Columbia University, New York, NY 10027, USA
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA
- Department of Molecular Pharmacology and Therapeutics, Columbia University, New York, NY, 10032, USA
| | - Patrícia T Bozza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
| | - Thiago Moreno L Souza
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
- National Institute for Science and Technology on Innovation in Diseases of Neglected Populations (INCT/IDPN), Center for Technological Development in Health (CDTS), Fiocruz, Rio de Janeiro, RJ, Brazil
| |
Collapse
|
8
|
Horowitz JE, Kosmicki JA, Damask A, Sharma D, Roberts GHL, Justice AE, Banerjee N, Coignet MV, Yadav A, Leader JB, Marcketta A, Park DS, Lanche R, Maxwell E, Knight SC, Bai X, Guturu H, Sun D, Baltzell A, Kury FSP, Backman JD, Girshick AR, O'Dushlaine C, McCurdy SR, Partha R, Mansfield AJ, Turissini DA, Li AH, Zhang M, Mbatchou J, Watanabe K, Gurski L, McCarthy SE, Kang HM, Dobbyn L, Stahl E, Verma A, Sirugo G, Ritchie MD, Jones M, Balasubramanian S, Siminovitch K, Salerno WJ, Shuldiner AR, Rader DJ, Mirshahi T, Locke AE, Marchini J, Overton JD, Carey DJ, Habegger L, Cantor MN, Rand KA, Hong EL, Reid JG, Ball CA, Baras A, Abecasis GR, Ferreira MA. Genome-wide analysis in 756,646 individuals provides first genetic evidence that ACE2 expression influences COVID-19 risk and yields genetic risk scores predictive of severe disease. medRxiv 2021. [PMID: 33619501 PMCID: PMC7899471 DOI: 10.1101/2020.12.14.20248176] [Citation(s) in RCA: 26] [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] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
SARS-CoV-2 enters host cells by binding angiotensin-converting enzyme 2 (ACE2). Through a genome-wide association study, we show that a rare variant (MAF = 0.3%, odds ratio 0.60, P=4.5×10-13) that down-regulates ACE2 expression reduces risk of COVID-19 disease, providing human genetics support for the hypothesis that ACE2 levels influence COVID-19 risk. Further, we show that common genetic variants define a risk score that predicts severe disease among COVID-19 cases.
Collapse
Affiliation(s)
- J E Horowitz
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - J A Kosmicki
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A Damask
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - D Sharma
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - G H L Roberts
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | | | - N Banerjee
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - M V Coignet
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - A Yadav
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | | | - A Marcketta
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - D S Park
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - R Lanche
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - E Maxwell
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - S C Knight
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - X Bai
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - H Guturu
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - D Sun
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A Baltzell
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - F S P Kury
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - J D Backman
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A R Girshick
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - C O'Dushlaine
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - S R McCurdy
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - R Partha
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - A J Mansfield
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - D A Turissini
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - A H Li
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - M Zhang
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - J Mbatchou
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - K Watanabe
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - L Gurski
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - S E McCarthy
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - H M Kang
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - L Dobbyn
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - E Stahl
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A Verma
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - G Sirugo
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | | | - M D Ritchie
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - M Jones
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - S Balasubramanian
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - K Siminovitch
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - W J Salerno
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A R Shuldiner
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - D J Rader
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | | | - A E Locke
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - J Marchini
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - J D Overton
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | | | - L Habegger
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - M N Cantor
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - K A Rand
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - E L Hong
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - J G Reid
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - C A Ball
- AncestryDNA, 1300 West Traverse Parkway, Lehi, UT 84043, USA
| | - A Baras
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - G R Abecasis
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - M A Ferreira
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| |
Collapse
|
9
|
Kosmicki JA, Horowitz JE, Banerjee N, Lanche R, Marcketta A, Maxwell E, Bai X, Sun D, Backman JD, Sharma D, Kang HM, O'Dushlaine C, Yadav A, Mansfield AJ, Li AH, Watanabe K, Gurski L, McCarthy SE, Locke AE, Khalid S, O'Keeffe S, Mbatchou J, Chazara O, Huang Y, Kvikstad E, O'Neill A, Nioi P, Parker MM, Petrovski S, Runz H, Szustakowski JD, Wang Q, Wong E, Cordova-Palomera A, Smith EN, Szalma S, Zheng X, Esmaeeli S, Davis JW, Lai YP, Chen X, Justice AE, Leader JB, Mirshahi T, Carey DJ, Verma A, Sirugo G, Ritchie MD, Rader DJ, Povysil G, Goldstein DB, Kiryluk K, Pairo-Castineira E, Rawlik K, Pasko D, Walker S, Meynert A, Kousathanas A, Moutsianas L, Tenesa A, Caulfield M, Scott R, Wilson JF, Baillie JK, Butler-Laporte G, Nakanishi T, Lathrop M, Richards JB, Jones M, Balasubramanian S, Salerno W, Shuldiner AR, Marchini J, Overton JD, Habegger L, Cantor MN, Reid JG, Baras A, Abecasis GR, Ferreira MA. A catalog of associations between rare coding variants and COVID-19 outcomes. medRxiv 2021:2020.10.28.20221804. [PMID: 33655273 PMCID: PMC7924298 DOI: 10.1101/2020.10.28.20221804] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) causes coronavirus disease-19 (COVID-19), a respiratory illness that can result in hospitalization or death. We investigated associations between rare genetic variants and seven COVID-19 outcomes in 543,213 individuals, including 8,248 with COVID-19. After accounting for multiple testing, we did not identify any clear associations with rare variants either exome-wide or when specifically focusing on (i) 14 interferon pathway genes in which rare deleterious variants have been reported in severe COVID-19 patients; (ii) 167 genes located in COVID-19 GWAS risk loci; or (iii) 32 additional genes of immunologic relevance and/or therapeutic potential. Our analyses indicate there are no significant associations with rare protein-coding variants with detectable effect sizes at our current sample sizes. Analyses will be updated as additional data become available, with results publicly browsable at https://rgc-covid19.regeneron.com.
Collapse
Affiliation(s)
- J A Kosmicki
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - J E Horowitz
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - N Banerjee
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - R Lanche
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A Marcketta
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - E Maxwell
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - X Bai
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - D Sun
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - J D Backman
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - D Sharma
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - H M Kang
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - C O'Dushlaine
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A Yadav
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A J Mansfield
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A H Li
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - K Watanabe
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - L Gurski
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - S E McCarthy
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A E Locke
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - S Khalid
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - S O'Keeffe
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - J Mbatchou
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - O Chazara
- Centre for Genomics Research, Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB2 0AA, UK
| | - Y Huang
- Centre for Genomics Research, Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB2 0AA, UK
| | - E Kvikstad
- Bristol Myers Squibb, Route 206 and Province Line Road, Princeton, NJ 08543, USA
| | - A O'Neill
- Centre for Genomics Research, Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB2 0AA, UK
| | - P Nioi
- Centre for Genomics Research, Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB2 0AA, UK
| | - M M Parker
- Alnylam Pharmaceuticals, 675 West Kendall St, Cambridge, MA 02142, USA
| | - S Petrovski
- Centre for Genomics Research, Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB2 0AA, UK
| | - H Runz
- Biogen, 300 Binney St, Cambridge, MA 02142, USA
| | - J D Szustakowski
- Centre for Genomics Research, Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB2 0AA, UK
| | - Q Wang
- Centre for Genomics Research, Discovery Sciences, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB2 0AA, UK
| | - E Wong
- Biogen, 300 Binney St, Cambridge, MA 02142, USA
| | | | - E N Smith
- Takeda California Inc., 9625 Towne Centre Dr, San Diego, CA 92121, USA
| | - S Szalma
- Takeda California Inc., 9625 Towne Centre Dr, San Diego, CA 92121, USA
| | - X Zheng
- AbbVie, Inc., 1 N. Waukegan Rd, North Chicago, IL 60064, USA
| | - S Esmaeeli
- AbbVie, Inc., 1 N. Waukegan Rd, North Chicago, IL 60064, USA
| | - J W Davis
- AbbVie, Inc., 1 N. Waukegan Rd, North Chicago, IL 60064, USA
| | - Y-P Lai
- Pfizer, Inc., 1 Portland Street, Cambridge MA 02139, USA
| | - X Chen
- Pfizer, Inc., 1 Portland Street, Cambridge MA 02139, USA
| | | | | | | | | | - A Verma
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - G Sirugo
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - M D Ritchie
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - D J Rader
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - G Povysil
- Institute for Genomic Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - D B Goldstein
- Institute for Genomic Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
- Department of Genetics & Development, Columbia University, New York, NY 10032, USA
| | - K Kiryluk
- Institute for Genomic Medicine, Columbia University Irving Medical Center, New York, NY 10032, USA
- Division of Nephrology, Department of Medicine, Vagelos College of Physicians & Surgeons, Columbia University, New York, NY 10032, USA
| | - E Pairo-Castineira
- Roslin Institute, University of Edinburgh, Easter Bush, Edinburgh, EH25 9RG, UK
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh, EH4 2XU, UK
| | - K Rawlik
- Roslin Institute, University of Edinburgh, Easter Bush, Edinburgh, EH25 9RG, UK
| | - D Pasko
- Genomics England, London EC1M 6BQ, UK
| | - S Walker
- Genomics England, London EC1M 6BQ, UK
| | - A Meynert
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh, EH4 2XU, UK
| | | | | | - A Tenesa
- Roslin Institute, University of Edinburgh, Easter Bush, Edinburgh, EH25 9RG, UK
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh, EH4 2XU, UK
- Centre for Global Health Research, Usher Institute of Population Health Sciences and Informatics, Teviot Place, Edinburgh EH8 9AG, UK
| | - M Caulfield
- Genomics England, London EC1M 6BQ, UK
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, UK
| | - R Scott
- Genomics England, London EC1M 6BQ, UK
- Great Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - J F Wilson
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh, EH4 2XU, UK
- Centre for Global Health Research, Usher Institute of Population Health Sciences and Informatics, Teviot Place, Edinburgh EH8 9AG, UK
| | - J K Baillie
- Roslin Institute, University of Edinburgh, Easter Bush, Edinburgh, EH25 9RG, UK
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh, EH4 2XU, UK
- Intensive Care Unit, Royal Infirmary of Edinburgh, 54 Little France Drive, Edinburgh, EH16 5SA, UK
| | - G Butler-Laporte
- Lady Davis Institute, Jewish General Hospital, Montréal, Québec H3T 1E2, Canada
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montréal, Québec H3A 0G4, Canada
| | - T Nakanishi
- Lady Davis Institute, Jewish General Hospital, Montréal, Québec H3T 1E2, Canada
- Department of Human Genetics, McGill University, Montréal, Québec H3A 0G4, Canada
- Kyoto-McGill International Collaborative School in Genomic Medicine, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
- Research Fellow, Japan Society for the Promotion of Science
| | - M Lathrop
- Department of Human Genetics, McGill University, Montréal, Québec H3A 0G4, Canada
- Canadian Centre for Computational Genomics, McGill University, Montréal, Québec H3A 0G4, Canada
| | - J B Richards
- Lady Davis Institute, Jewish General Hospital, Montréal, Québec H3T 1E2, Canada
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montréal, Québec H3A 0G4, Canada
- Department of Human Genetics, McGill University, Montréal, Québec H3A 0G4, Canada
- Department of Twins Research, King's College London, London WC2R 2LS, UK
| | - M Jones
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - S Balasubramanian
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - W Salerno
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A R Shuldiner
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - J Marchini
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - J D Overton
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - L Habegger
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - M N Cantor
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - J G Reid
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - A Baras
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - G R Abecasis
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| | - M A Ferreira
- Regeneron Genetics Center, 777 Old Saw Mill River Rd., Tarrytown, NY 10591, USA
| |
Collapse
|
10
|
Costa CM, Difante GS, Costa ABG, Gurgel ALC, Ferreira MA, Santos GT. Grazing intensity as a management strategy in tropical grasses for beef cattle production: a meta-analysis. Animal 2021; 15:100192. [PMID: 33637442 DOI: 10.1016/j.animal.2021.100192] [Citation(s) in RCA: 6] [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: 11/12/2020] [Revised: 01/25/2021] [Accepted: 01/28/2021] [Indexed: 11/25/2022] Open
Abstract
Correct pasture management associated with the adjustment of grazing intensity determines pasture persistence and the level of production per animal and per land area. The objective of this review was to examine the effect of grazing intensity in tropical pastures on the performance and productivity of beef cattle by a meta-analytical approach. The review followed a protocol developed and tested based on the PICOS strategy to formulate the guiding question: population (beef cattle), intervention (high grazing intensities), comparison (low grazing intensities), outcome (animal performance and productivity), and study design (experimental). Data were collected from papers published in the electronic databases of SCOPUS (Elsevier), Web of Science (Main collection), SpringerLink, Wiley Online Library, and Science Direct (Elsevier) by a single cross-reference search. The selected studies were considered relevant when they: (1) were primary research published in the format of a research article; (2) included grazing intensities as a management strategy; and (3) evaluated average daily gain (ADG, kg/animal per day), stocking rates (SR, animal unit (AU)/ha; AU = 450 kg), and weight gain per area (WGH, kg/ha). Thirteen manuscripts were selected due to their methodological strength for data extraction. The means under continuous stocking were 0.67 kg/animal per day for ADG, 518.12 kg/ha for WGH, and 4.19 AU/ha for SR. Under intermittent stocking, the means were 0.62 kg/animal per day for ADG, 980.18 kg/ha for WGH, and 5.10 AU/ha for SR. In tropical forages, the heights of 20 to 40 cm for pastures under continuous stocking and the defoliation intensities of 40 to 50% for those under intermittent stocking result in greater individual performance and animal productivity per land area.
Collapse
Affiliation(s)
- C M Costa
- Graduate Program in Animal Science, Federal University of Mato Grosso do Sul, Avenida Senador Filinto Müler, 2443, 79074-460 Campo Grande, Mato Grosso do Sul, Brazil.
| | - G S Difante
- Graduate Program in Animal Science, Federal University of Mato Grosso do Sul, Avenida Senador Filinto Müler, 2443, 79074-460 Campo Grande, Mato Grosso do Sul, Brazil
| | - A B G Costa
- Graduate Program in Animal Science, Federal University of Mato Grosso do Sul, Avenida Senador Filinto Müler, 2443, 79074-460 Campo Grande, Mato Grosso do Sul, Brazil
| | - A L C Gurgel
- Graduate Program in Animal Science, Federal University of Mato Grosso do Sul, Avenida Senador Filinto Müler, 2443, 79074-460 Campo Grande, Mato Grosso do Sul, Brazil
| | - M A Ferreira
- Graduate Program in Nursin, Federal University of Mato Grosso do Sul, Cidade Universitária, Caixa Postal 549, 79070-900 Campo Grande, Mato Grosso do Sul, Brazil
| | - G T Santos
- Graduate Program in Animal Science, Federal University of Mato Grosso do Sul, Avenida Senador Filinto Müler, 2443, 79074-460 Campo Grande, Mato Grosso do Sul, Brazil
| |
Collapse
|
11
|
Negri EM, Piloto BM, Morinaga LK, Jardim CVP, Lamy SAED, Ferreira MA, D’Amico EA, Deheinzelin D. Heparin Therapy Improving Hypoxia in COVID-19 Patients - A Case Series. Front Physiol 2020; 11:573044. [PMID: 33192569 PMCID: PMC7604350 DOI: 10.3389/fphys.2020.573044] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [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: 06/15/2020] [Accepted: 09/28/2020] [Indexed: 12/14/2022] Open
Abstract
INTRODUCTION Elevated D-dimer is a predictor of severity and mortality in COVID-19 patients, and heparin use during in-hospital stay has been associated with decreased mortality. COVID-19 patient autopsies have revealed thrombi in the microvasculature, suggesting that hypercoagulability is a prominent feature of organ failure in these patients. Interestingly, in COVID-19, pulmonary compliance is preserved despite severe hypoxemia corroborating the hypothesis that perfusion mismatch may play a significant role in the development of respiratory failure. METHODS We describe a series of 27 consecutive COVID-19 patients admitted to Sirio-Libanes Hospital in São Paulo-Brazil and treated with heparin in therapeutic doses tailored to clinical severity. RESULTS PaO2/FiO2 ratio increased significantly over the 72 h following the start of anticoagulation, from 254(±90) to 325(±80), p = 0.013, and 92% of the patients were discharged home within a median time of 11 days. There were no bleeding complications or fatal events. DISCUSSION Even though this uncontrolled case series does not offer absolute proof that micro thrombosis in the pulmonary circulation is the underlying mechanism of respiratory failure in COVID-19, patient's positive response to heparinization contributes to the understanding of the pathophysiological mechanism of the disease and provides valuable information for the treatment of these patients while we await the results of further prospective controlled studies.
Collapse
Affiliation(s)
- Elnara Marcia Negri
- Sirio-Libanes Hospital, São Paulo, Brazil
- Cell Biology Laboratory (LIM 59), Hospital das Clinicas, University of Sao Paulo Medical School, São Paulo, Brazil
| | - Bruna Mamprim Piloto
- Sirio-Libanes Hospital, São Paulo, Brazil
- Department of Pulmonary, Heart Institute, University of Sao Paulo Medical School, São Paulo, Brazil
| | - Luciana Kato Morinaga
- Sirio-Libanes Hospital, São Paulo, Brazil
- Department of Pulmonary, Heart Institute, University of Sao Paulo Medical School, São Paulo, Brazil
| | - Carlos Viana Poyares Jardim
- Sirio-Libanes Hospital, São Paulo, Brazil
- Department of Pulmonary, Heart Institute, University of Sao Paulo Medical School, São Paulo, Brazil
| | | | - Marcelo Alves Ferreira
- Cell Biology Laboratory (LIM 59), Hospital das Clinicas, University of Sao Paulo Medical School, São Paulo, Brazil
| | - Elbio Antonio D’Amico
- Department of Hematology and Hemotherapy, University of Sao Paulo Medical School, São Paulo, Brazil
| | | |
Collapse
|
12
|
Vana LPM, Battlehner CN, Ferreira MA, Caldini EG, Gemperli R, Alonso N. Comparative long-term study between two dermal regeneration templates for the reconstruction of burn scar contractures in humans: Clinical and histological results. Burns 2019; 46:596-608. [PMID: 31645293 DOI: 10.1016/j.burns.2019.09.005] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 08/15/2019] [Accepted: 09/14/2019] [Indexed: 01/14/2023]
Abstract
The advent of dermal regeneration templates has fostered major advances in the treatment of acute burns and their sequelae, in the last three decades. Both data on morphological aspects of the newly-formed tissue, and clinical trials comparing different templates, are few. The goal of this study was to prospectively analyze the outcome of randomized patients treated with two of the existing templates, followed by thin skin autograft. They are both 2 mm-thick bovine collagen templates (Matriderm® and Integra®), the latter includes a superficial silicone layer. Surgery was performed on patients with impaired mobility resulting from burn sequelae (n = 12 per template) in a two-step procedure. Negative pressure therapy was applied after surgery; patients were monitored for 12 months. No intra or postoperative complications were observed. Data on scar skin quality (Vancouver scar scale), rate of mobility recovery, and graft contraction were recorded; as well as morphological analyses at light microscopical level. Improvement in mobility and skin quality were demonstrated along with graft contraction, in all patients. The double layer template showed the best performance in retraction rate, skin quality and mobility recovery. The subepidermal newly-formed connective tissue showed no histoarchitectural differences between the templates. The double layer template was not absorbed up to 12 months after placement.
Collapse
Affiliation(s)
- Luiz Philipe Molina Vana
- Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, BR. Divisao de Cirurgia Plastica e Queimaduras.
| | - Cláudia Naves Battlehner
- Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, BR. Laboratorio de Biologia Celular, LIM59, Departamento de Patologia
| | - Marcelo Alves Ferreira
- Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, BR. Laboratorio de Biologia Celular, LIM59, Departamento de Patologia
| | - Elia Garcia Caldini
- Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, BR. Laboratorio de Biologia Celular, LIM59, Departamento de Patologia
| | - Rolf Gemperli
- Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, BR. Divisao de Cirurgia Plastica e Queimaduras
| | - Nivaldo Alonso
- Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, BR. Divisao de Cirurgia Plastica e Queimaduras
| |
Collapse
|
13
|
Cipriano A, Neves-Maia J, Lopes V, Fleming CE, Ferreira MA, Bathay J. African histoplasmosis in a Guinea Bissau patient with HIV-2: Case report and review. J Mycol Med 2019; 30:100904. [PMID: 31706701 DOI: 10.1016/j.mycmed.2019.100904] [Citation(s) in RCA: 5] [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: 07/09/2019] [Revised: 09/30/2019] [Accepted: 10/01/2019] [Indexed: 11/19/2022]
Abstract
African histoplasmosis is the relatively unknown infection by Histoplasma capsulatum var. duboisii. It is endemic to Central and West Africa, generally involving the skin with potential for systemic dissemination, and has been described mainly in immunocompetent hosts. We present the case of a 30-year-old Bissau-Guinean man with HIV-2 infection known for 16 years, irregularly treated, admitted with two weeks of fever, diarrhoea and cutaneous lesions. Examination revealed multiple subcutaneous nodes, Molluscum contagiosum-like lesions, generalized lymphadenopathy and painful palpation of the left iliac fossa. Laboratory tests showed severe nonhaemolytic anaemia and CD4+ count of 9/mm3, with normal creatinine and hepatic enzymes. Chest roentgenogram was unremarkable and a research for Mycobacterium tuberculosis by GeneXpert® was negative. Nonetheless, given the lack of further diagnostic tools, a presumptive diagnosis of disseminated tuberculosis was made, and the patient was started on tuberculostatic and antiretroviral drugs. Despite initial improvement, a national shortage of antiretrovirals precluded further treatment, with worsening of the clinical picture, namely an increase in the number and dimensions of the skin lesions. An excisional biopsy of a subcutaneous nodule revealed Histoplasma capsulatum var. duboisii. Unfortunately, due to the unavailability of antifungals, the patient died one week later. To our best knowledge, this is the first confirmed case of an HIV infected patient with African histoplasmosis in Guinea-Bissau.
Collapse
Affiliation(s)
- A Cipriano
- Infectious Diseases Department of Centro Hospitalar Universitário do Porto, EPE, Porto, Portugal.
| | - J Neves-Maia
- Internal Medicine Department of Centro Hospitalar Universitário do Porto, EPE, Porto, Portugal
| | - V Lopes
- Microbiology Department of Centro Hospitalar Universitário do Porto, EPE, Porto, Portugal
| | - C E Fleming
- Pathological Anatomy Department of Centro Hospitalar do Porto, EPE, Porto, Portugal
| | - M A Ferreira
- Pediatrics Department of Hospital do Mal de Hansen, Cumura, Guine Bissau
| | - J Bathay
- Infectious Diseases Department of Hospital do Mal de Hansen, Cumura, Guine Bissau
| |
Collapse
|
14
|
Dos Santos AF, Ferreira MA, Auer CG, Buhrer CB, Brito NM, Scremin RM, Mireski MC. First Report of Yerba Mate Wilt Caused by Ceratocystis fimbriata in Brazil. Plant Dis 2018; 102:PDIS02180228PDN. [PMID: 30192182 DOI: 10.1094/pdis-02-18-0228-pdn] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- A F Dos Santos
- Embrapa Florestas, Colombo, Paraná, CEP 83411-000, Brazil
| | - M A Ferreira
- Universidade Federal de Lavras, Lavras, Minas Gerais, CEP 37200-000 Brazil
| | - C G Auer
- Embrapa Florestas, Colombo, Paraná, CEP 83411-000, Brazil
| | - C B Buhrer
- Embrapa Florestas, Colombo, Paraná, CEP 83411-000, Brazil
| | - N M Brito
- Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - R M Scremin
- Instituto Marcos Enriette, Curitiba, Paraná, Brazil
| | - M C Mireski
- Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| |
Collapse
|
15
|
Carvalho N, Canela FM, Leite PHS, Ferreira MA, Oliveira VR, Santos MF, Souza NOS, Buso GSC. Analysis of genetic variability of commercial melon cultivars using SSR molecular markers. Genet Mol Res 2017; 16:gmr-16-03-gmr.16039739. [PMID: 28873211 DOI: 10.4238/gmr16039739] [Citation(s) in RCA: 2] [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] [Indexed: 11/03/2022]
Abstract
Taking into account the scenario of melon production (Cucumis melo L.) in Brazil, it is notable the importance of the culture in the fruit market. The preference of the national market is concentrated in the fruits of the yellow type. Therefore, it is possible that the genetic base of the commercial cultivars is relatively narrow due to the loss of important genes in the breeding process, and it is possible to introgress external genes for increasing recombination possibilities that generate sources of resistance to the main diseases and superior genotypes. This study evaluated the genetic variability of 87 melon accessions composed of 72 commercial cultivars belonging to the Inodorus and Cantaloupensis groups and 15 plant introductions (PIs). Forty-four polymorphic SSR primers were used to amplify a total of 202 alleles. The expected heterozygosity presented an average of 0.519 and the PIC index of 0.458, being moderately informative. The dendrogram generated for the 72 cultivars grouped the genotypes into 2 main groups, and there was no association with the classification of groups of the genotypes in the grouping. The number of SSR markers was sufficient to predict wide genetic variability among the cultivars studied, with the similarity between 0.35 and 0.98. The dendrogram presented for the 72 cultivars and the 15 PI genotypes was not associated with the classification of the genotypes in the grouping, and the 15 PIs were well dispersed with similarity indexes that resemble the two groups studied. A set of 25 primers was identified that were useful in distinguishing the 72 cultivars. These primers can be used in later research with the cultivars, as well as in crop protection situations, being an important tool in the useful and rapid distinction of genotypes, and in commercial disputes regarding the certification of the main melon cultivars used in the country.
Collapse
Affiliation(s)
- N Carvalho
- Programa de Pós-Graduação em Recursos Genéticos, , , Brasil
| | - F M Canela
- Faculdade de Agronomia e Medicina Veterinária, , , Brasil
| | - P H S Leite
- Faculdade de Agronomia e Medicina Veterinária, , , Brasil
| | - M A Ferreira
- Laboratório de Genética Vegetal, EMBRAPA Recursos Genéticos e Biotecnologia, , Brasil
| | | | | | | | - G S C Buso
- Laboratório de Genética Vegetal, EMBRAPA Recursos Genéticos e Biotecnologia, , Brasil
| |
Collapse
|
16
|
Ferreira MA, Silva DM, de Morais AC, Mota JF, Botelho PB. Therapeutic potential of green tea on risk factors for type 2 diabetes in obese adults - a review. Obes Rev 2016; 17:1316-1328. [PMID: 27443447 DOI: 10.1111/obr.12452] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 06/08/2016] [Accepted: 06/16/2016] [Indexed: 12/29/2022]
Abstract
Green tea has been associated with positive effects in the treatment of obesity and other associated comorbidities such as type 2 diabetes. These benefits are thought to be related to the anti-inflammatory and antioxidant effects of green tea and to the reduction in body fat percentage exhibited by its bioactive compounds. The predominant active compounds in green tea are flavonoid monomers known as catechins, in particular epigallocatechin-3-gallate, which is the most abundant and most effective catechin in metabolic care, particularly among obese patients. The objective of this review was to investigate the effects of green tea on body composition, oxidative stress, inflammation and insulin resistance, risk factors for the development of type 2 diabetes in obese individuals and the mechanisms that underlie the modulatory actions of green tea compounds on these risk factors. Although green tea has therapeutic potential in the treatment of obese individuals, the findings of this review demonstrate the need for a greater number of studies to confirm the positive effects of green tea, especially regarding the modulation of obesity.
Collapse
Affiliation(s)
- M A Ferreira
- Laboratory of Research in Clinical Nutrition and Sports (Labince), Nutrition Faculty, Federal University of Goias (UFG), Goiania, Goias, Brazil
| | - D M Silva
- Laboratory of Research in Clinical Nutrition and Sports (Labince), Nutrition Faculty, Federal University of Goias (UFG), Goiania, Goias, Brazil
| | - A C de Morais
- Laboratory of Research in Clinical Nutrition and Sports (Labince), Nutrition Faculty, Federal University of Goias (UFG), Goiania, Goias, Brazil
| | - J F Mota
- Laboratory of Research in Clinical Nutrition and Sports (Labince), Nutrition Faculty, Federal University of Goias (UFG), Goiania, Goias, Brazil
| | - P B Botelho
- Laboratory of Research in Clinical Nutrition and Sports (Labince), Nutrition Faculty, Federal University of Goias (UFG), Goiania, Goias, Brazil
| |
Collapse
|
17
|
Silva PRB, Dresch AR, Machado KS, Moraes JGN, Lobeck-Luchterhand K, Nishimura TK, Ferreira MA, Endres MI, Chebel RC. Prepartum stocking density: effects on metabolic, health, reproductive, and productive responses. J Dairy Sci 2014; 97:5521-32. [PMID: 24952785 DOI: 10.3168/jds.2014-8093] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [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: 02/28/2014] [Accepted: 04/15/2014] [Indexed: 11/19/2022]
Abstract
The objectives of the current experiment were to determine the effects of 2 prepartum stocking densities on milk yield, concentration of metabolites during the peripartum period, and health and reproductive parameters of dairy cows. Jersey cows enrolled in the experiment at 254±3 d of gestation were balanced for parity (nulliparous vs. parous) and previous lactation projected 305-d mature equivalent milk yield (parous) and assigned to 1 of 2 treatments: 80% headlock stocking density (80SD; 38 animals/48 headlocks) and 100% headlock stocking density (100SD; 48 animals/48 headlocks). The number of experimental units was 8 (4 replicates and 2 pens/treatment per replicate). In total, 154 nulliparous and 184 parous animals were enrolled in the 80SD treatment and 186 nulliparous and 232 parous animals were enrolled in the 100SD treatment. At the start of each replicate, treatments were switched within pen. Cows were milked thrice daily and monthly milk yield, fat and protein content, and somatic cell count data were recorded up to 155 d postpartum. Plasma nonesterified fatty acid concentration was measured weekly, from -18±3 to 17±3 d relative to calving, and plasma β-hydroxybutyrate was measured weekly, from 1±2 to 17±3 d relative to calving. Cows were examined 1, 4±1, 7±1, 10±1, and 13±1 d relative to calving for diagnosis of uterine diseases. Blood was sampled for determination of progesterone concentration and resumption of ovarian cycles 35±3 and 45±3 d relative to calving. Average headlock (74.1±0.4 vs. 94.5±0.3%) and stall (80.8±0.4 vs. 103.1±0.4%) stocking density was lower for the 80SD treatment compared with the 100SD treatment. Treatment did not affect incidence of retained fetal membranes (80SD=5.1, 100SD=7.8%), metritis (80SD=21.2, 100SD=16.7%), acute metritis (80SD=9.9, 100SD=9.4%), and vaginal purulent discharge (80SD=5.8, 100SD=7.9%). Concentrations of nonesterified fatty acids (80SD=251.5±6.1, 100SD=245.9±5.6μmol/L) and β-hydroxybutyrate (80SD=508.2±14.3, 100SD=490.9±13.6μmol/L) were not different between treatments. Treatment had no effect on percentage of cows removed from the herd on the first 60 d postpartum (80SD=6.1, 100SD=5.1%) and on rate of removal from the herd up to 305 d postpartum 80SD=referent, 100SD [adjusted hazard ratio (95% confidence interval)]=1.02 (0.75, 1.38). Percentages of cows pregnant to first (80SD=41.9, 100SD=48.4%) and second (80SD=49.3, 100SD=42.0%) postpartum AI were not different between treatments. Finally, treatment did not affect energy-corrected milk yield up to 155 d postpartum (80SD=33.8±0.5, 100SD=33.4±0.5kg/d). In herds with weekly or twice weekly movement of new cows to the prepartum pen and separate housing of nulliparous and parous animals, a target stocking density of 100% of headlocks on the day of movement is not expected to affect health, metabolic, reproductive, and productive parameters.
Collapse
Affiliation(s)
- P R B Silva
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul 55108; Department of Animal Science, University of Minnesota, St. Paul 55108
| | - A R Dresch
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul 55108
| | - K S Machado
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul 55108
| | - J G N Moraes
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul 55108
| | | | - T K Nishimura
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul 55108
| | - M A Ferreira
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul 55108
| | - M I Endres
- Department of Animal Science, University of Minnesota, St. Paul 55108
| | - R C Chebel
- Department of Veterinary Population Medicine, University of Minnesota, St. Paul 55108; Department of Animal Science, University of Minnesota, St. Paul 55108.
| |
Collapse
|
18
|
Mendes M, Barbosa J, Loureiro E, Ferreira MA. How medical education can contribute towards the reduction of maternal mortality in Angola: the teaching/learning process of Gynecology and Obstetrics. Afr Health Sci 2014; 14:228-36. [PMID: 26060485 DOI: 10.4314/ahs.v14i1.36] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND In Angola the maternal mortality ratio is among the highest in the world. Medical students are an important target for intervention. OBJECTIVES To evaluate how students perceive the curricular unit of Gynecology and Obstetrics (G&O) in a public institution of reference in Angola. METHODS The study involved a sample of 147 students of the faculty of Medicine of the University Agostinho Neto, Luanda, Angola, attending the curricular unit of G&O in the 5th and 6th years of the medical course. Data were obtained through surveys of opinion. The information of the scales was summarized through the construction of scores from the original items using the Principal Components Analysis. RESULTS Students evaluated positively the curricular unit although emphasizing the lack of human and physical resources. The 5th year scored with higher values Teacher Performance and 6th year Students' Performance. Both years considered to have insufficient skills to meet the learning objectives. CONCLUSION Constraints were identified in the outcomes of the teaching/learning program. Several points emerged as crucial from this study: widespread the areas of teaching/learning, increase the number and quality of teaching staff, improve the monitoring of students and provide adequate infrastructures and medical equipment to support the teaching/learning program.
Collapse
Affiliation(s)
- M Mendes
- Department of Education and Research of Gynecology and Obstetrics, Faculty of Medicine of the University Agostinho Neto Av. Hoji ya Henda, 116, Luanda, Angola.
| | - J Barbosa
- Center for Medical Education, Faculty of Medicine of the University of Porto Al. Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
| | - E Loureiro
- Elizabete Maria Ferraz Loureiro Carteado Center for Medical Education, Faculty of Medicine of the University of Porto Al. Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
| | - M A Ferreira
- Maria Amélia Duarte Ferreira Center for Medical Education, Faculty of Medicine of the University of Porto Al. Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
| |
Collapse
|
19
|
Matias M, Marques T, Ferreira MA, Ribeiro L. Cat scratch disease and lymph node tuberculosis in a colon patient with cancer. BMJ Case Rep 2013; 2013:bcr-2013-010424. [PMID: 24334464 DOI: 10.1136/bcr-2013-010424] [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: 11/04/2022] Open
Abstract
A 71-year-old man operated for a sigmoid tumour remained in the surveillance after adjuvant chemotherapy. After 3 years, a left axillary lymph node was visible on CT scan. The biopsy revealed a necrotising and abscessed granulomatous lymphadenitis, suggestive of cat scratch disease. The patient confirmed having been scratched by a cat and the serology for Bartonella henselae was IgM+/IgG-. Direct and culture examinations for tuberculosis were negative. The patient was treated for cat scratch disease. One year later, the CT scan showed increased left axillary lymph nodes and a left pleural effusion. Direct and cultural examinations to exclude tuberculosis were again negative. Interferon-γ release assay testing for tuberculosis was undetermined and then positive. Lymph node and pleural tuberculosis were diagnosed and treated with a good radiological response. This article has provides evidence of the importance of continued search for the right diagnosis and that two diagnoses can happen in the same patient.
Collapse
Affiliation(s)
- M Matias
- Oncology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, EPE, Lisboa, Portugal
| | | | | | | |
Collapse
|
20
|
Aragão FAS, Torres Filho J, Nunes GHS, Queiróz MA, Bordallo PN, Buso GSC, Ferreira MA, Costa ZP, Bezerra Neto F. Genetic divergence among accessions of melon from traditional agriculture of the Brazilian Northeast. Genet Mol Res 2013; 12:6356-71. [PMID: 24390985 DOI: 10.4238/2013.december.6.3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The genetic divergence of 38 melon accessions from traditional agriculture of the Brazilian Northeast and three commercial hybrids were evaluated using fruit descriptors and microsatellite markers. The melon germplasm belongs to the botanic varieties cantalupensis (19), momordica (7), conomon (4), and inodorus (3), and to eight genotypes that were identified only at the species level. The fruit descriptors evaluated were: number of fruits per plant (NPF), fruit mass (FM; kg), fruit longitudinal diameter (LD; cm), fruit transversal diameter (TD; cm), shape index based on the LD/TD ratio, flesh pulp thickness, cavity thickness (CT; cm), firmness fruit pulp (N), and soluble solids (SS; °Brix). The results showed high variability for all descriptors, especially for NPF, LD, and FM. The grouping analysis based on fruit descriptors produced eight groups without taxonomic criteria. The LD (22.52%), NPF (19.70%), CT (16.13%), and SS (9.57%) characteristics were the descriptors that contributed the most to genotype dissimilarity. The 17 simple sequence repeat polymorphic markers amplified 41 alleles with an average of 2.41 alleles and three genotypes per locus. Some markers presented a high frequency for the main allele. The genetic diversity ranged from 0.07 to 0.60, the observed heterozygosity had very low values, and the mean polymorphism information content was 0.32. Molecular genetic similarity analyses clustered the accessions in 13 groups, also not following taxonomic ranks. There was no association between morphoagronomic and molecular groupings. In conclusion, there was great variability among the accessions and among and within botanic groups.
Collapse
Affiliation(s)
- F A S Aragão
- Laboratório de Melhoramento e Recursos Genéticos Vegetais, Embrapa Agroindústria Tropical, Fortaleza, CE, Brasil
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Stoker C, Zayas MA, Ferreira MA, Durando M, Galoppo GH, Rodríguez HA, Repetti MR, Beldoménico HR, Caldini EG, Luque EH, Muñoz-de-Toro M. The eggshell features and clutch viability of the broad-snouted caiman (Caiman latirostris) are associated with the egg burden of organochlorine compounds. Ecotoxicol Environ Saf 2013; 98:191-195. [PMID: 24054891 DOI: 10.1016/j.ecoenv.2013.08.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [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: 05/13/2013] [Revised: 08/26/2013] [Accepted: 08/28/2013] [Indexed: 06/02/2023]
Abstract
Organochlorine compounds (OCCs) are toxic and have been identified as endocrine-disrupting chemicals (EDCs). The broad-snouted Caiman (Caiman latirostris) is an oviparous species widely distributed in South America with potential to accumulate OCCs. The eggshell is formed during passage of the eggs through the oviduct. Since the oviduct is a target of hormone actions, exposure to OCCs could modify eggshell quality, thus affecting clutch viability. Eight clutches were collected from wetlands of Parana River tributaries, in north-eastern Argentina. Two to four eggs per clutch were used to establish the burden of OCCs, eggshell thickness and eggshell porosity. The remaining eggs were incubated in controlled conditions. Ten days after hatching, hatchling survival was assessed. Organochlorine pesticide residues (OCPs) were found in all clutches, while polychlorinated biphenyls (PCBs) were present in all but one clutch. The principal contributors to the OCP burden were members of the DDT family and oxychlordane. Eggshell thickness was 400.9±6.0 μm and, unexpectedly, no association between eggshell thickness and the OCC burden was found. The number of pores in the outer surface was 25.3±4.3 pores/cm². A significant inverse correlation between porosity and OCC burden was found (Pearson r= -0.81, p= 0.01). Furthermore, a decrease in caiman survival with decreased pore density was observed (Pearson r= 0.73, p= 0.04). Our findings highlight another potential negative impact of current and past use of OCCs on wildlife species.
Collapse
Affiliation(s)
- C Stoker
- Laboratory of Endocrinology and Endocrine-dependent Tumors, School of Biochemistry and Biological Sciences, National University of Litoral, Santa Fe, Argentina
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Galvão TC, Lima CR, Gomes LHF, Pagani TD, Ferreira MA, Gonçalves AS, Correa PR, Degrave WM, Mendonça-Lima L. The BCG Moreau RD16 deletion inactivates a repressor reshaping transcription of an adjacent gene. Tuberculosis (Edinb) 2013; 94:26-33. [PMID: 24332305 DOI: 10.1016/j.tube.2013.11.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [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: 08/29/2013] [Revised: 11/11/2013] [Accepted: 11/17/2013] [Indexed: 10/26/2022]
Abstract
The Brazilian anti-tuberculosis vaccine strain Mycobacterium bovis bacillus Calmette-Guérin (BCG) BCG Moreau is unique in having a deletion of 7608 bp (RD16) that results in the truncation of a putative TetR transcriptional regulator, the ortholog of Mycobacterium tuberculosis rv3405c, BCG_M3439c. We investigated the effect of this truncation on the expression of the rv3406 ortholog (BCG_M3440), lying 81 bp downstream in the opposite orientation. RT-PCR and western blot experiments show that rv3406 mRNA and Rv3406 accumulate in BCG Moreau but not in BCG Pasteur (strain that bears an intact rv3405c), suggesting this to be a result of rv3405c truncation. Recombinant Rv3405c forms a complex with the rv3405c-rv3406 intergenic region, which contains a characteristic transcription factor binding site, showing it to have DNA binding activity. Complementation of M. bovis BCG Moreau with an intact copy of rv3405c abolishes Rv3406 accumulation. These results show that Rv3405c is a DNA binding protein that acts as a transcriptional repressor of rv3406.
Collapse
Affiliation(s)
- Teca Calcagno Galvão
- Laboratório de Bacteriologia, Centro de Referência Prof. Hélio Fraga, Escola Nacional de Saúde Pública Sergio Arouca, Fiocruz. Estr. de Curicica 2000, Jacarepaguá, 22780-194 Rio de Janeiro, RJ, Brazil.
| | - Cristiane Rodrigues Lima
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fiocruz. Av. Brasil 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil.
| | - Leonardo Henrique Ferreira Gomes
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fiocruz. Av. Brasil 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil.
| | - Talita Duarte Pagani
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fiocruz. Av. Brasil 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil.
| | - Marcelo Alves Ferreira
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fiocruz. Av. Brasil 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil.
| | - Antonio S Gonçalves
- Laboratório de Biotecnologia e Fisiologia de Infecções Virais, Instituto Oswaldo Cruz, Fiocruz. Av. Brasil 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil.
| | - Paloma Rezende Correa
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fiocruz. Av. Brasil 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil.
| | - Wim Maurits Degrave
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fiocruz. Av. Brasil 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil.
| | - Leila Mendonça-Lima
- Laboratório de Genômica Funcional e Bioinformática, Instituto Oswaldo Cruz, Fiocruz. Av. Brasil 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ, Brazil.
| |
Collapse
|
23
|
Pinheiro da Silva F, Medeiros MCR, Santos ÂBGD, Ferreira MA, Garippo AL, Chammas R, Caldini E, Velasco IT, Possolo de Souza H, Machado MCC. Neutrophils LL-37 migrate to the nucleus during overwhelming infection. Tissue Cell 2013; 45:318-20. [DOI: 10.1016/j.tice.2013.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 04/08/2013] [Accepted: 04/23/2013] [Indexed: 11/25/2022]
|
24
|
Nogueira CM, Azevedo WMD, Dagli MLZ, Toma SH, Leite AZDA, Lordello ML, Nishitokukado I, Ortiz-Agostinho CL, Duarte MIS, Ferreira MA, Sipahi AM. Titanium dioxide induced inflammation in the small intestine. World J Gastroenterol 2012; 18:4729-35. [PMID: 23002342 PMCID: PMC3442211 DOI: 10.3748/wjg.v18.i34.4729] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Revised: 05/31/2012] [Accepted: 06/15/2012] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effects of titanium dioxide (TiO2) nanoparticles (NPTiO2) and microparticles (MPTiO2) on the inflammatory response in the small intestine of mice.
METHODS: Bl 57/6 male mice received distilled water suspensions containing TiO2 (100 mg/kg body weight) as NPTiO2 (66 nm), or MPTiO2 (260 nm) by gavage for 10 d, once a day; the control group received only distilled water. At the end of the treatment the duodenum, jejunum and ileum were extracted for assessment of cytokines, inflammatory cells and titanium content. The cytokines interleukin (IL)-1b, IL-4, IL-6, IL-8, IL-10, IL-12, IL-13, IL-17, IL-23, tumor necrosis factor-α (TNF-α), intracellular interferon-γ (IFN-γ) and transforming growth factor-β (TGF-β) were evaluated by enzyme-linked immunosorbent assay in segments of jejunum and ileum (mucosa and underlying muscular tissue). CD4+ and CD8+ T cells, natural killer cells, and dendritic cells were evaluated in duodenum, jejunum and ileum samples fixed in 10% formalin by immunohistochemistry. The titanium content was determined by inductively coupled plasma atomic emission spectrometry.
RESULTS: We found increased levels of T CD4+ cells (cells/mm2) in duodenum: NP 1240 ± 139.4, MP 1070 ± 154.7 vs 458 ± 50.39 (P < 0.01); jejunum: NP 908.4 ± 130.3, MP 813.8 ± 103.8 vs 526.6 ± 61.43 (P < 0.05); and ileum: NP 818.60 ± 123.0, MP 640.1 ± 32.75 vs 466.9 ± 22.4 (P < 0.05). In comparison to the control group, the groups receiving TiO2 showed a statistically significant increase in the levels of the inflammatory cytokines IL-12, IL-4, IL-23, TNF-α, IFN-γ and TGF-β. The cytokine production was more pronounced in the ileum (mean ± SE): IL-12: NP 33.98 ± 11.76, MP 74.11 ± 25.65 vs 19.06 ± 3.92 (P < 0.05); IL-4: NP 17.36 ± 9.96, MP 22.94 ± 7.47 vs 2.19 ± 0.65 (P < 0.05); IL-23: NP 157.20 ± 75.80, MP 134.50 ± 38.31 vs 22.34 ± 5.81 (P < 0.05); TNFα: NP 3.71 ± 1.33, MP 5.44 ± 1.67 vs 0.99 ± 019 (P < 0.05); IFNγ: NP 15.85 ± 9.99, MP 34.08 ± 11.44 vs 2.81 ± 0.69 (P < 0.05); and TGF-α: NP 780.70 ± 318.50, MP 1409.00 ± 502.20 vs 205.50 ± 63.93 (P < 0.05).
CONCLUSION: Our findings indicate that TiO2 particles induce a Th1-mediated inflammatory response in the small bowel in mice.
Collapse
|
25
|
Almeida RAMB, Ferreira MA, Barraviera B, Haddad Jr V. The first reported case of human tick paralysis in Brazil: a new induction pattern by immature stages. J Venom Anim Toxins Incl Trop Dis 2012. [DOI: 10.1590/s1678-91992012000400017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
26
|
Ferreira MA, Assumpção R, Luersen MA, Borges PC. Mechanical behaviour of a prototype orthodontic retraction spring: a numerical-experimental study. Eur J Orthod 2011; 35:414-20. [PMID: 21778520 DOI: 10.1093/ejo/cjr062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The purpose of this study was to examine the mechanical behaviour of orthodontic delta retraction springs. Twelve titanium-molybdenum (0.016 × 0.022 inch) delta loops were studied. The springs were analysed by means of the finite element (FE) method and experimental tests using a platform transducer. Each spring was activated from 0 to 6 mm. Statistical analysis of the data was carried out by one-way analysis of variance and Games-Howell parametric multiple comparison test for heterogeneous variances. FE analysis revealed that the stress level varied from 277 to 1273 MPa. At 6.1 mm (773 MPa), the springs were still in the elastic range. Force levels varied from 0.1 N (10 g) to 2.2 N (224 g) at 1.4-8.1 mm of activation for the numerical study and from 0.44 N (45 g) at 1 mm to 2.02 N (206 g) at 6 mm of activation in the experimental study. The spring rate was within the levels that are appropriate for clinical use (34 g/mm). Vertical forces (Fy) showed constancy and were of low magnitude. The anterior moment/force ratio from the experimental tests was 14 at 3 mm of activation decreasing to 10.7, 8.7, and 7.2, for 4, 5, and 6 mm of activation, respectively. The springs could be activated up to 7 mm without exceeding the elastic limit.
Collapse
Affiliation(s)
- M A Ferreira
- Department of Biomedical Engineering, Technical Federal University of Parana, Brazil.
| | | | | | | |
Collapse
|
27
|
Marouelli LP, Inglis PW, Ferreira MA, Buso GSC. Genetic relationships among Heliconia (Heliconiaceae) species based on RAPD markers. Genet Mol Res 2010; 9:1377-87. [PMID: 20645261 DOI: 10.4238/vol9-3gmr847] [Citation(s) in RCA: 9] [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] [Indexed: 11/03/2022]
Abstract
The family Heliconiaceae contains a single genus, Heliconia, with approximately 180 species of Neotropical origin. This genus was formerly allocated to the family Musaceae, but today forms its own family, in the order Zingiberales. The combination of inverted flowers, a single staminode and drupe fruits is an exclusive characteristic of Heliconia. Heliconias are cultivated as ornamental garden plants, and are of increasing importance as cut flowers. However, there are taxonomic confusions and uncertainties about the number of species and the relationships among them. Molecular studies are therefore necessary for better understanding of the species boundaries of these plants. We examined the genetic variability and the phylogenetic relationships of 124 accessions of the genus Heliconia based on RAPD markers. Phenetic and cladistic analyses, using 231 polymorphic RAPD markers, demonstrated that the genus Heliconia is monophyletic. Groupings corresponding to currently recognized species and some subgenera were found, and cultivars and hybrids were found to cluster with their parents. RAPD analysis generally agreed with morphological species classification, except for the position of the subgenus Stenochlamys, which was found to be polyphyletic.
Collapse
Affiliation(s)
- L P Marouelli
- Departamento de Botânica, Universidade de Brasília, Brasília, DF, Brasil
| | | | | | | |
Collapse
|
28
|
Coutinho L, Ferreira MA, Cosson A, Batista MM, Batista DDGJ, Minoprio P, Degrave WM, Berneman A, Soeiro MDNC. Inhibition of Trypanosoma cruzi proline racemase affects host-parasite interactions and the outcome of in vitro infection. Mem Inst Oswaldo Cruz 2009; 104:1055-62. [DOI: 10.1590/s0074-02762009000800001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Accepted: 11/30/2009] [Indexed: 11/22/2022] Open
Affiliation(s)
- Leticia Coutinho
- Laboratório de Genômica Funcional e Bioinformática; Instituto Oswaldo Cruz-Fiocruz, Brasil
| | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Matos RT, Honório RS, Caldini EG, Hashimoto CL, Ferreira MA, Navarro-Rodriguez T. Variation of the intercellular space in the esophageal epithelium in response to hydrochloridric acid infusion in patients with erosive esophagitis. Clinics (Sao Paulo) 2009; 64:669-74. [PMID: 19606244 PMCID: PMC2710441 DOI: 10.1590/s1807-59322009000700011] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2009] [Accepted: 04/25/2009] [Indexed: 01/28/2023] Open
Abstract
UNLABELLED The purpose of this study was to compare esophageal infusion with 0.1 N hydrochloric acid (HCl) to esophageal infusion with saline in patients presenting with typical gastroesophageal reflux symptoms and erosive esophagitis. METHODS Upper gastrointestinal endoscopy was performed on 44 prospective subjects, 29 of whom were included in the study. Eighteen patients presented with normal esophagi (Control Group "C"), nine of whom were infused with HCl and nine with saline. Eleven patients presented with erosive esophagitis (Lesion Group "L"), five of whom were infused with HCl and six with saline. Biopsies of the esophageal mucosa were collected before and after infusions. RESULTS No statistically significant difference was found between the two types of infusions in terms of the dilation of the intercellular space of the esophageal epithelium, regardless of the status of the patient. CONCLUSIONS Response to HCl infusion cannot be used as a marker for gastroesophageal reflux disease.
Collapse
Affiliation(s)
- Ricardo Tedeschi Matos
- Department of Gastroenterology, Faculdade de Medicina da Universidade de São Paulo - São Paulo/SP, Brazil
| | - Rodrigo Schuler Honório
- Laboratory of Medical Investigation in Hepatic Pathology, Faculdade de Medicina da Universidade de São Paulo - São Paulo/SP, Brazil
| | - Elia Garcia Caldini
- Laboratory of Cell Biology, Department of Pathology, Faculdade de Me-dicina da Universidade de São Paulo - São Paulo/SP, Brazil.,
, Tel: 55 19 3301.1910
| | - Claudio Lyoiti Hashimoto
- Department of Gastroenterology, Faculdade de Medicina da Universidade de São Paulo - São Paulo/SP, Brazil
| | - Marcelo Alves Ferreira
- Laboratory of Cell Biology, Department of Pathology, Faculdade de Me-dicina da Universidade de São Paulo - São Paulo/SP, Brazil.,
, Tel: 55 19 3301.1910
| | - Tomás Navarro-Rodriguez
- Department of Gastroenterology, Faculdade de Medicina da Universidade de São Paulo - São Paulo/SP, Brazil
| |
Collapse
|
30
|
Piedade MCB, Galhardo MS, Battlehner CN, Ferreira MA, Caldini EG, de Toledo OMS. Effect of ultrasound therapy on the repair of gastrocnemius muscle injury in rats. Ultrasonics 2008; 48:403-411. [PMID: 18384832 DOI: 10.1016/j.ultras.2008.01.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2007] [Revised: 01/14/2008] [Accepted: 01/30/2008] [Indexed: 05/26/2023]
Abstract
The aim of this study was to evaluate the effect of the pulsed ultrasound therapy (PUT) in stimulating myoregeneration and collagen deposition in an experimental model of lacerative gastrocnemius muscle lesion in 30 Wistar rats. Fifteen rats were treated (TG) daily with 1 MHz pulsed ultrasound (50%) at 0.57 W/cm(2) for 5 min, and 15 were control animals (CG). Muscle samples were analyzed on postoperative days 4, 7 and 14 through H&E, Picrosirius-polarization and immunohistochemistry for desmin. The lesions presented similar inflammatory responses in both treated and control groups. The areal fraction of fibrillar collagen was larger in the TG at 4 days post-operatively (17.53+/-6.2% vs 6.79+/-1.3%, p=0.0491), 7 days (31.07+/-7.45% vs 12.57+/-3.6%, p=0.0021) and 14 days (30.39+/-7.3% vs 19.13+/-3.51%, p=0.0118); the areal fraction of myoblasts and myotubes was larger in the TG at 14 days after surgery (41.66+/-2.97% vs 34.83+/-3.08%, p=0.025). Our data suggest that the PUT increases the differentiation of muscular lineage cells, what would favor tissue regeneration. On the other hand, it is also suggested that there is a larger deposition of collagenous fibers, what could mean worse functional performance. However, the percentage of fibers seems to have stabilized at day 7 in TG and kept increasing in CG. Furthermore, the collagen supramolecular organization achieved by the TG is also significant according to the Sirius red staining results.
Collapse
Affiliation(s)
- Maria Cristina Balejo Piedade
- Discipline of Histology and Structural Biology, Department of Morphology, The Federal University of São Paulo, Rua Botucatu 790, 04023-062 São Paulo (SP), Brazil
| | | | | | | | | | | |
Collapse
|
31
|
Buso GSC, Paiva MR, Torres AC, Resende FV, Ferreira MA, Buso JA, Dusi AN. Genetic diversity studies of Brazilian garlic cultivars and quality control of garlic-clover production. Genet Mol Res 2008; 7:534-41. [PMID: 18752178 DOI: 10.4238/vol7-2gmr451] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The garlic cultivars grown in Brazil evolved from somatic mutations and clone selection by breeding programs and by the introduction of germplasm from other countries. Morphological characters have been used to differentiate these cultivars. Two hundred and six random amplified polymorphic DNA markers were utilized for a diversity analysis of the 17 most planted garlic cultivars in Brazil. Bootstrap analysis showed that the number of markers was efficient and sufficient to obtain a coefficient of variation of 10%. Similarity varied between 16 and 98% and cluster analysis showed that, in general, genetic similarities correlate with morphological characters of the cultivars and production cycle variation. High bootstrap values at most of the nodes supported the dendrogram stability. The grouping of most varieties agreed well with previous reports based on morphological characters. As a vegetative-propagated species, viral diseases are a key problem regarding production and quality of the bulbs, causing gradual loss of yield and decrease in storage capacity. To improve the health quality of garlic seed, a virus-free stock of garlic cloves of the Amarante cultivar was obtained. The ability to distinguish garlic cultivars to detect varietal mixing after in vitro multiplication is extremely important, since correct identification is not possible until bulbs are produced. Random amplified polymorphic DNA markers were also used to differentiate cultivars while they are in vitro and not amenable to morphological discrimination. No difference was identified between the fingerprints of the virus-free or of the infected bulks of Amarante, showing that there was no clove mixing in the handling of material in the clonal multiplication phase.
Collapse
Affiliation(s)
- G S C Buso
- Embrapa Recursos Genéticos e Biotecnologia, Brasília, DF, Brasil.
| | | | | | | | | | | | | |
Collapse
|
32
|
Rossini A, Rapozo DCM, Soares Lima SC, Guimarães DP, Ferreira MA, Teixeira R, Kruel CDP, Barros SGS, Andreollo NA, Acatauassú R, Matos HJ, Albano RM, Pinto LFR. Polymorphisms of GSTP1 and GSTT1, but not of CYP2A6, CYP2E1 or GSTM1, modify the risk for esophageal cancer in a western population. Carcinogenesis 2007; 28:2537-42. [PMID: 17916905 DOI: 10.1093/carcin/bgm222] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Esophageal cancer is among the most common and fatal tumors in the world. Eighty percent of esophageal tumors are esophageal squamous cell carcinoma (ESCC). Brazil is one of the high incidence areas in the West, where tobacco and alcohol consumption have been associated with ESCC. However, polymorphisms in xenobiotic metabolizing genes may also contribute to the risk. Therefore, in this study, we analyzed the risk of ESCC associated with tobacco and alcohol consumption and with polymorphisms of CYP2A6 (CYP2A6*2), CYP2E1 (CYP2E1*5B, CYP2E1*6), GSTP1 (Ile105Val), GSTM1 and GSTT1 null genotypes in 126 cases and 252 age- and gender-matched controls. Data on the amount, length and type of tobacco and alcohol consumed were collected, and DNA was extracted from blood lymphocytes from all individuals. Polymorphisms were analyzed by polymerase chain reaction (PCR)-multiplex (GSTM1 and T1), PCR-Restriction Fragment Length Polymorphism (CYP2E1*5B and *6 and GSTP1 Ile105Val) or allele-specific PCR amplification (CYP2A6*2). Risks were evaluated by multivariate conditional regression analysis. As expected, tobacco [odds ratio (OR) = 6.71, 95% confidence interval (95% CI) 3.08-14.63] and alcohol (OR = 16.98, CI 7.8-36.98) consumption, independently or together (OR = 26.91, CI 13.39-54.05) were risk factors. GSTP1 Ile105Val polymorphism was an independent risk factor (OR = 2.12, CI 1.37-3.29), whereas GSTT1 wild-type was an independent protective factor for ESCC (OR = 0.37, CI 0.16-0.79). There was approximately 80% statistical power to detect both results. There was no risk associated with CYP2A6, CYP2E1 and GSTM1 polymorphisms. In conclusion, this study suggests an opposite role of GSTP1 and GSTT1 polymorphisms for the risk for ESCC.
Collapse
Affiliation(s)
- A Rossini
- Departamento de Bioquímica, IBRAG, Universidade do Estado do Rio de Janeiro, RJ 20551-013, Brasil
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
De Jesus JB, Ferreira MA, Cuervo P, Britto C, e Silva-Filho FC, Meyer-Fernandes JR. Iron modulates ecto-phosphohydrolase activities in pathogenic trichomonads. Parasitol Int 2006; 55:285-90. [PMID: 17010660 DOI: 10.1016/j.parint.2006.08.002] [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] [Received: 04/21/2006] [Revised: 07/21/2006] [Accepted: 08/21/2006] [Indexed: 11/27/2022]
Abstract
The presence of iron in the extracellular medium is essential for both in vivo and in vitro survival of pathogenic microorganisms, including Trichomonas vaginalis and Tritrichomonas foetus. In these parasites, iron is directly involved in the proliferation, protein expression and activation of critical enzymes. The purpose of this study was to investigate the role of iron in ecto-ATPase, ecto-phophatase and secreted phosphatase activities of these trichomonads. We observed that trichomonads grown in iron-depleted medium exhibited a remarkable decrease in both ecto-ATPase and ecto-phosphatase activities, when compared to those cultivated under control conditions (iron-rich medium). Furthermore, parasites grown in iron-depleted medium restored their enzyme activities when they were re-inoculated into fresh iron-rich medium. We demonstrated that modulation of ecto-phosphohydrolase activities is due neither to enzyme-iron nor to substrate-iron complex formation, since iron addition directly to the medium where the enzymatic reactions occurred did not alter their activities. Previously, we had reported that a fresh clinical isolate of T. vaginalis was much more cytotoxic to epithelial cell monolayers than a long-term cultured one. In this study we witnessed that the fresh isolate of T. vaginalis presented higher activities to all herein investigated enzymes than the long-term cultured one. Altogether, our data clearly point out that iron has a pivotal role in the expression of phosphohydrolases in both trichomonads.
Collapse
Affiliation(s)
- José Batista De Jesus
- Departamento de Bioquímica e Biologia Molecular, Instituto Oswaldo Cruz, Pav Leônidas Deane, Brasil, 4365, Manguinhos, Rio de Janeiro, RJ, Brazil.
| | | | | | | | | | | |
Collapse
|
34
|
Menon-Miyake MA, Saldiva PHN, Lorenzi-Filho G, Ferreira MA, Butugan O, Oliveira RCD. Luffa operculata effects on the epithelium of frog palate: histological features. Braz J Otorhinolaryngol 2005; 71:132-8. [PMID: 16446907 PMCID: PMC9450526 DOI: 10.1016/s1808-8694(15)31300-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Luffa operculata is the botanical name of buchinha-do-norte or cabacinha, which is a medicinal plant widely used for the treatment of rhinitis and rhinosinusitis. In Europe and USA, it is available in homeopathic medicines. In Brazil, Luffa operculata dry fruit infusion is inhaled or instilled into the nose releasing profuse mucous secretion, thus relieving nasal symptoms. Nevertheless, this often may cause irritation, epistaxis or anosmia. Study design Experimental. Material and Method The effects of Luffa operculata were evaluated in different concentration infusions, in isolated frog palate preparation, testing 46 palates after immersion. Four groups (n = 10) were tested with the infusion prepared with frog Ringer (isotonic): control; 60 mg/L; 600 mg/L; and 1200 mg/L. An additional group was tested using the infusion with water (600 mg/L H2O, n = 6). Epithelial samples were harvested to be studied under light microscopy and electron transmission microscopy. Results In treated palates, light microscopy findings were dose-dependent standard toxic changes. Electron transmission microscopy showed enlargement of intercellular spaces and tight junctions disruption, pointing to ion-fluid transport abnormalities. Conclusions: Luffa operculata infusion in currently used doses can promote significant structural and ultrastructural changes in the epithelium of this ex vivo model of respiratory mucosa.
Collapse
|
35
|
Menon-Miyake MA, Saldiva PHN, Lorenzi-Filho G, Ferreira MA, Butugan O, Oliveira RCD. Efeitos da Luffa operculata sobre o epitélio do palato de rã: aspectos histológicos. ACTA ACUST UNITED AC 2005. [DOI: 10.1590/s0034-72992005000200003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Luffa operculata é o nome botânico da buchinha-do-norte ou cabacinha, uma planta medicinal usada popularmente no tratamento das rinites e rinossinusites. Na Europa e nos EUA, está em medicamentos homeopáticos. No Brasil, a infusão (chá) do fruto seco de Luffa operculata é utilizada para inalação ou instilação nasal, resultando em liberação profusa de muco que alivia os sintomas nasossinusais, mas há relatos freqüentes de irritação nasal, epistaxe e anosmia. FORMA DE ESTUDO: Experimental. MATERIAL E MÉTODO: Avaliamos os efeitos da infusão de Luffa operculata em diferentes concentrações, no modelo experimental do palato isolado de rã, examinando 46 palatos após imersão. Quatro grupos (n=10) foram testados com infusão feita em Ringer-rã (solução isotônica): controle; 60mg/l; 600mg/l e 1200mg/l. Um grupo foi testado em água (600mg/l H2O, n=6). Coletamos amostras do epitélio para estudo histológico à microscopia-de-luz e microscopia eletrônica de transmissão. RESULTADOS: Nos palatos tratados, os achados à microscopia-de-luz mostram lesões epiteliais de padrão tóxico, dose-dependentes. Na microscopia eletrônica, aumento dos espaços intercelulares e ruptura de tight junctions apontam para anormalidade no transporte iônico e de fluidos. CONCLUSÕES: A infusão de Luffa operculata, nas concentrações utilizadas popularmente, promove alterações significantes na estrutura e ultraestrutura epitelial deste modelo ex vivo de mucosa respiratória.
Collapse
|
36
|
Lee ADW, Ribeiro U, Ferreira MA, Sesso A, Bresciani CJC, Gama-Rodrigues J. [Apoptosis participation in the acute rejection of intestinal transplantation in rats]. Arq Gastroenterol 2005; 41:193-8. [PMID: 15678206 DOI: 10.1590/s0004-28032004000300011] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BACKGROUND Intestinal transplantation is a possible treatment for patients with short bowel syndrome, aiming the reintroduction of oral diet. However, the major obstacle in this procedure is the strong rejection. Delay in rejection diagnosis may be irreversible and lethal. AIM To define method for early diagnosis of rejection based on the apoptosis from intestinal allograft. MATERIAL AND METHODS Isogenic rats Brown-Norway (BN) and Lewis (LEW) were submitted to intestinal heterotopic allotransplantation and divided in two groups: LEW donor to LEW recipient isograft group C and BN donor to LEW recipient allograft group (Tx). According to the day of sacrifice, Tx group were subdivided in three subgroups with eight animals each as follow: Tx3-- sacrificed at third postoperative day (POD), Tx5 -- sacrificed at fifth POD and Tx7 -- sacrificed at seventh POD. Eight animals from control group were subdivided in three moments according to the time of biopsy from the graft as follow: C3 -- biopsy at third POD; C5 -- biopsy at fifth POD and C7 -- biopsy at seventh POD. All animals from control group were sacrificed at seventh POD. Rejection parameters were compared between the control groups (C3 vs C5, C3 vs C7 and C5 vs C7, and allograft group (Tx3 vs Tx5, Tx3 vs Tx7 and Tx5 vs Tx7). The same parameters were analyzed between the control group and allograft groups ( C3 vs Tx3, C5 vs Tx5 and C7 vs Tx7). In C group no statistical significant difference regarding the expression of the apoptotic cells were detected, while in Tx group, the presence of apoptotic cells were remarkable since the third postoperative day.
Collapse
Affiliation(s)
- André Dong Won Lee
- Departamento de Gastroenterologia, Faculdade de Medicina, Universidade de São Paulo, SP
| | | | | | | | | | | |
Collapse
|
37
|
Gil CC, Azevedo FV, Ferreira MA. A Successful Struggle to Prolong Arteriovenous Fistula Patency: A Case Report. J Vasc Access 2005; 6:34-7. [PMID: 16552681 DOI: 10.1177/112972980500600108] [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] [Indexed: 11/15/2022] Open
Abstract
An adequate vascular access (VA) significantly determines the morbidity and mortality of chronic renal failure (CRF) patients on maintenance hemodialysis (HD). VA patency depends on the early identification of complications and its management by the nephrologists and vascular surgeon. Venous stenosis accounts for the majority of thromboses, but its early detection followed by either percutaneous angioplasty (PTA) and/or surgical correction will improve fistula patency. We present the clinical case report of a 90-year-old patient with recurrent central venous stenosis after PTA that was corrected with bypass surgery. Two years after surgery the original fistula is still used showing no signs of access dysfunction.
Collapse
Affiliation(s)
- C C Gil
- Hemodial, Vila Franca de Xira Hemodialysis Center, Portugal.
| | | | | |
Collapse
|
38
|
Casal S, Mendes E, Fernandes JO, Oliveira MBPP, Ferreira MA. Analysis of heterocyclic aromatic amines in foods by gas chromatography–mass spectrometry as their tert.-butyldimethylsilyl derivatives. J Chromatogr A 2004; 1040:105-14. [PMID: 15248430 DOI: 10.1016/j.chroma.2004.03.054] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.0] [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: 11/19/2022]
Abstract
A derivatization method for the analysis of 12 heterocyclic aromatic amines (HAs) in food, by gas chromatography-electron impact mass spectrometry, was developed. The amines are derivatized in a one-step reaction with N-methyl-N-(tert.-butyldimethylsilyl)trifluoroacetamide. The derivatives are characterized by easy-to-interpret mass spectra due to the prominent ion [M-57]+ by loss of a tert.-butyldimethylsilyl group, allowing quantification in the selected-ion monitoring mode at the picogram level. The effect of temperature, time, and reagents on the formation of the derivatives was monitored in detail. Quality parameters were evaluated in the optimum working conditions. This derivatization method is not applicable to the pyridoimidazoles Glu-P-1 and Glu-P-2 and to the beta-carboline harman due to incompletely derivatization. The instability of the imidazolquinoline and imidazoquinoxaline derivatives, requiring their injection on the same working day, is a further drawback. This simple, rapid and accurate derivatization procedure is suitable for routine analysis, as illustrated by the analysis of some common foods.
Collapse
Affiliation(s)
- S Casal
- REQUIMTE, Serviço de Bromatología, Faculdade de Farmácia da Universidade do Porto, Rua Aníbal Cunha, 164, 4099-030 Porto, Portugal.
| | | | | | | | | |
Collapse
|
39
|
Abstract
Headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry was employed for the quantification of volatile free fatty acids (FFA) in "Terrincho" ewe cheese. Solid-phase microextraction quantitative analysis was feasible under equilibrium situations as long as the conditions of agitation and the adsorption time were held constant. An excellent linear relationship between the amount of the adsorbed analyte and its initial concentration in the sample matrix was obtained when an adequate amount of sample was chosen. Thus, quantification was possible if biases due to competition or linear range excesses were controlled. Solid-phase microextraction sampling was carried out at 65 degrees C, and a fiber coated with an 85-micro/m polyacrylate film was chosen. After equilibration at 65 degrees C for 40 min, the fiber was exposed to the headspace above the sample for 20 min and then inserted into the gas chromatograph. The evolution of the volatile FFA during Terrincho ewe cheese ripening was analyzed for a 60-d period. An overall increase in FFA contents was verified up to 30 d of ripening. Between 30 and 45 d most FFA did not suffer significant changes. All FFA increased significantly by the 60-d ripening period. The excessive lipolysis observed at 60 d of ripening may result in the presence of off-flavors. Principal component analysis performed for intravarietal comparison of volatile FFA composition of 19 Terrincho cheeses, analyzed at 30 ripening days, enabled discrimination between cheeses produced at five different dairy plants.
Collapse
Affiliation(s)
- O Pinho
- REQUIMTE/Serviço de Bromatologia, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha, 4050-047 Porto, Portugal
| | | | | |
Collapse
|
40
|
Casal S, Fernandes JO, Oliveira MBPP, Ferreira MA. Gas chromatographic-mass spectrometric quantification of 4-(5-)methylimidazole in roasted coffee after ion-pair extraction. J Chromatogr A 2002; 976:285-91. [PMID: 12462620 DOI: 10.1016/s0021-9673(02)01154-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.4] [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
A GC-MS method is described for quantification of 4-(5-)methylimidazole (4MI) in coffee. Although tested, GC-flame ionization detection proved inadequate for this purpose due to the complexity of the coffee matrix. The developed method was based on ion-pair extraction with bis-2-ethylhexylphosphate and derivatization with isobutylchloroformate. Quantification was carried out by the standard addition method using 2-ethylimidazole as internal standard. Reproducibility data from the complete procedure are presented. Mean recoveries were higher than 98%. The method was applied to green and roasted coffee samples from the two most important varieties, arabica and robusta, and to commercial "torrefacto" coffee blends. 4MI was not detected in the green coffee samples analysed and ranged from 0.307 to 1.241 mg/kg in roasted samples.
Collapse
Affiliation(s)
- S Casal
- CEQUP/Fac. Farmácia, Serviçio de Bromatologia, Rua Aníbal Cunha 164, 4050-047 Oporto, Portugal.
| | | | | | | |
Collapse
|
41
|
Pinho O, Ferreira IMPLVO, Ferreira MA. Solid-phase microextraction in combination with GC/MS for quantification of the major volatile free fatty acids in ewe cheese. Anal Chem 2002; 74:5199-204. [PMID: 12403571 DOI: 10.1021/ac020296m] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This work describes a method for quantification of the major free fatty acids of ewe cheese that contribute to its distinct and strongly marked flavor. A headspace SPME method in combination with GC/MS was used for the extraction, identification, and quantification of butanoic, hexanoic, octanoic and decanoic acids in ewe cheeses. The method used for sample preparation was simple. A fiber coated with 85-microm polyacrylate film was chosen to extract the free fatty acids. To perform a reliable quantification, several factors were taken into consideration for reliable quantification, namely, (i) the influence of addition of water, of an electrolyte or of a hygroscopic salt, on the release of free fatty acids from the matrix; (ii) the linear relationship between the amount of analyte adsorbed by the SPME polymer film and the initial concentration of the analyte in the cheese sample; and (iii) the competition for adsorption by fiber. Water removal with sodium sulfate promoted a more efficient extraction of volatile free fatty acids; biases due to competition or linear range excesses were controlled by choosing the appropriate amount of sample for each ewe cheese. The method of standard additions was used with success for the quantification of free fatty acids. Calibration curves that were constructed for the major short-chain free fatty acids (butanoic, hexanoic, octanoic, and decanoic acids) spiked into cheese followed linear relationships with highly significant (p < 0.001) correlation coefficients (r > 0.999). Coefficients of variation of <7.9% indicated that the technique was reproducible. A marked increase in concentration of short-chain free fatty acids was observed during cheese ripening, ranging from 0.35 to 9.33 mg/100 g for butanoic acid, 0.363 to 4.34 mg/100 g for hexanoic acid, 0.343 to 2.0 mg/100 g for octanoic acid, and 1.291 to 3.85 mg/100 g for decanoic acid. The limits of quantification were registered at levels of parts per million. The absolute quantification of butanoic acid was also carried out by using isotope dilution assays (IDA). The levels of acid obtained with this method were similar to those obtained by the standard additions method.
Collapse
Affiliation(s)
- O Pinho
- CEQUP/Serviço de Bromatologia, Faculdade de Farmácia, Universidade do Porto, Portugal
| | | | | |
Collapse
|
42
|
Abstract
Many cross-sectional and follow-up studies of large numbers of patients with hypertension have demonstrated an increased prevalence and mortality from renal cancer. We report the details of three patients with renal cell carcinoma from a series of 254 consecutive patients with malignant phase hypertension, an excess over the expected number reported from several large published series with non-malignant hypertension. In view of this excess we investigated the prevalence of hypertension in a series of 192 consecutive patients who presented with a diagnosis of renal cell carcinoma, in comparison with a local unselected population screening survey. Hypertension was found in 43% of the renal carcinoma patients and 20% of the local population, also a clear excess. The mechanism of the association between renal cancer and malignant and non-malignant hypertension is unclear.
Collapse
Affiliation(s)
- P S Wong
- Department of Medicine, City Hospital, Birmingham, UK
| | | | | | | | | | | | | |
Collapse
|
43
|
Arcieri ES, Jorge EF, de Abrea Ferreira L, da Fonseca MB, Ferreira MA, Arcieri RS, Rocha FJ. Bilateral endogenous endophthalmitis associated with infective endocarditis: case report. Braz J Infect Dis 2001; 5:356-9. [PMID: 12010601 DOI: 10.1590/s1413-86702001000600011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bilateral endogenous endophthalmitis is a rare condition initiated by infection by microbes in the bloodstream, such as those arising from a foci of infective endocarditis. We report a case and discuss the diagnostic aspects and the clinical outcome of a patient with characteristic findings of the disease. The patient was a 49 year old white male who had a metallic aortic valve implanted 7 months previously, and who presented to the hospital with 10 days of fever, cough and dyspnea, then diarrhea and mental confusion. On the second day of hospitalization, he experienced sudden loss of vision in both eyes. A Gram-positive coccobacillus was isolated from the bloodstream, he was treated with fluoroquinolone with disappearance of fever, decreased ocular inflammation, and improvement in his vision to light perception. He later underwent valve replacement surgery but died during the procedure. We review the occurrence of ocular signs and symptoms and their importance in patients with endocarditis.
Collapse
Affiliation(s)
- E S Arcieri
- School of Medicine, Federal University of Uberlândia, MG, Brazil.
| | | | | | | | | | | | | |
Collapse
|
44
|
Silva FA, Borges F, Ferreira MA. Effects of phenolic propyl esters on the oxidative stability of refined sunflower oil. J Agric Food Chem 2001; 49:3936-3941. [PMID: 11513692 DOI: 10.1021/jf010193p] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The oxidative stability of refined sunflower oil in the presence and in the absence of propyl caffeate (PC), propyl hydrocaffeate (PHC), propyl ferulate (PF), and propyl isoferulate (PI) has been evaluated according to the Rancimat method. The antioxidant activity of the phenolic derivatives was compared with that obtained with native [alpha-tocopherol (alpha-TOH)] and synthetic [propyl gallate (PG)] antioxidants. The results allow the establishment of a decreasing order of antioxidant power: PG > PHC > PC >> alpha-TOH > PI > PF. The oxidative stability was improved neither by the addition of PF nor by a supplement of alpha-TOH. Moreover, a positive antioxidant effect was obtained for PC that was placed between those of alpha-TOH and PG. The antioxidant activity of PHC was higher than that of its analogue (PC). A dose-dependent effect was observed for PG, PHC, and PC. A chain-breaking mechanism was proposed for the antioxidant activity of propyl phenolic esters because the same ranking order of efficacy was obtained for their antiradical activities evaluated by using the 2,2-diphenyl-1-picrylhydrazyl radical method.
Collapse
Affiliation(s)
- F A Silva
- Instituto Superior de Ciências da Saúde - Norte, Rua Central da Gandra 1317, Gandra, 4580 Paredes, Portugal
| | | | | |
Collapse
|
45
|
Trevisol-Bittencourt PC, Ferreira MA, Marasciulo AC, Collares CF. [The most common conditions in a neurology specialty clinic]. Arq Neuropsiquiatr 2001; 59:214-8. [PMID: 11400028] [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] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
OBJECTIVE To present the most frequent diagnosis among patients referred for neurological evaluation to estimate their labour capacities at the unit of National Institute of Social Security (INSS), Florianópolis-SC, southern Brazil. METHOD Review of all medical records of 108 patients evaluated between October 97 and May 98. The sample was submitted to judicious medico-legal assessment to define their final diagnosis. RESULTS Neurological evaluation disclosed as the commonest disorders, in decreasing order of frequency: epilepsy, rheumatic diseases, psychiatric illnesses, neurological disorders related to chronic alcoholism, head trauma syndrome and cerebrovascular diseases. CONCLUSION Neurological disorders may be responsible for important disability among workers in our society. However, the potential for social rehabilitation, often underestimated, must be considered. Moreover, diverse non-neurological conditions used to be sent for neurological evaluation.
Collapse
|
46
|
Abstract
BACKGROUND A simple method of measurement of chronic damage in renal biopsy specimens would be useful in clinical management, prognosis, comparisons between different centres and trials. METHODS An interactive image analysis system was used to outline and measure areas of chronic damage in 247 renal biopsy specimens to give an index of chronic damage, expressed as a percentage of cortical cross-sectional area. Prognostic value was analysed by the Kaplan-Meier method to study time between biopsy and onset of permanent dialysis. RESULTS There was no significant bias between measurements by the same observer or different observers. The index of chronic damage ranged from 0 to 90%. Increasing severity of chronic damage was associated with shortened renal survival. Each increase of 10% in the index increased the hazard ratio of risk of permanent dialysis by 1.5 times (95% confidence interval 1.4-1.7, P<0.001). CONCLUSIONS A simple measure of chronic damage was a powerful indicator of prognosis. This is likely to be clinically useful in routine practice and trials.
Collapse
Affiliation(s)
- A J Howie
- Department of Pathology, University of Birmingham, Queen Elizabeth Hospital, Birmingham, UK
| | | | | |
Collapse
|
47
|
Ferreira MA, Brasil AF, Silva JR, Andrade ER, Rodrigues AP, Figueiredo JR. Effects of storage time and temperature on atresia of goat ovarian preantral follicles held in M199 with or without indole-3-acetic acid supplementation. Theriogenology 2001; 55:1607-17. [PMID: 11393214 DOI: 10.1016/s0093-691x(01)00506-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [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: 11/23/2022]
Abstract
Maintenance of follicular quality after removal and during transport of ovaries is necessary for studies on development of preantral follicles in vitro. The present work investigated the effectiveness of M199 and M199IAA for preservation of goat preantral follicles in ovarian tissue. At the slaughterhouse, the ovarian pair of each animal was divided into 19 fragments. One ovarian fragment was immediately fixed (control--Time 0). The other 18 fragments were randomly distributed in M199 or M1991AA at 4, 20 or 39 degrees C and stored for 4, 12 or 24 h. Histological analysis showed that storage of ovarian fragments in either solution at 20 or 39 degrees C significantly reduced the percentage of normal preantral follicles when compared with the control, in all cases except after preservation in M199IAA at 20 degrees C for 4 h. In contrast, preservation at 4 degrees C, in either solution, kept the percentage of normal preantral follicles at control values. Reduced cellular metabolism may explain why the best preservation of preantral follicles was at 4 degrees C. The addition of IAA to the TCM 199 was effective for goat preantral follicle preservation at 20 degrees C for 4 h.
Collapse
Affiliation(s)
- M A Ferreira
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles, Faculty of Veterinary-University of Ceará, Fortaleza, Brazil.
| | | | | | | | | | | |
Collapse
|
48
|
Andrade PB, Oliveira BM, Seabra RM, Ferreira MA, Ferreres F, García-Viguera C. Analysis of phenolic compounds in Spanish Albrariño and Portuguese Alvarinho and Loureiro wines by capillary zone electrophoresis and high-performance liquid chromatography. Electrophoresis 2001; 22:1568-72. [PMID: 11386671 DOI: 10.1002/1522-2683(200105)22:8<1568::aid-elps1568>3.0.co;2-k] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The concentration of different phenolic compounds was measured in Spanish Albariño and Portuguese Alvarinho and Loureiro white wines by capillary zone electrophoresis (CZE), in order to characterize them. Although all samples presented the same qualitative pattern (characterized by tyrosol; (-)-epicatechin; syringic acid; ferulic acid; p-coumaric acid; caffeic acid, gallic acid; 3,4-dihydroxybenzoic acid; cis-coumaroyl tartaric acid (COUTA); trans-COUTA; trans-caffeoyl tartaric acid (CAFTA), and hydroxycinnamic esters), some quantitative differences were observed. When samples were analyzed by high-performance liquid chromatography (HPLC), in order to compare the results obtained by both techniques, no significant qualitative or quantitative differences were obtained. Nevertheless, CZE proved to be a more convenient technique for the routinary analyses of these wines, due to better separation of the different compounds, better peak shapes, and higher speed than HPLC.
Collapse
Affiliation(s)
- P B Andrade
- CEQUP/Lab. Farmacognosia, Faculdade de Farmácia, Universidade do Porto, Portugal
| | | | | | | | | | | |
Collapse
|
49
|
Silva JR, Báo SN, Lucci CM, Carvalho FC, Andrade ER, Ferreira MA, Figueiredo JR. Morphological and ultrastructural changes occurring during degeneration of goat preantral follicles preserved in vitro. Anim Reprod Sci 2001; 66:209-23. [PMID: 11348783 DOI: 10.1016/s0378-4320(01)00102-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [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: 10/18/2022]
Abstract
The present work has investigated the morphological and ultrastructural changes occurring during degeneration of goat preantral follicles preserved in vitro and showed quantitative data about the distribution of follicular degeneration types in the control and after preservation in coconut water solution or Braun-Collins solution at different temperatures (4, 20 or 39 degrees C) and incubation times (4, 12 or 24h). At the slaughterhouse, the pair of ovaries of each animal was divided into 19 fragments. One ovarian fragment was immediately fixed (control: Time 0). The other 18 fragments were randomly distributed in tubes containing 2ml of coconut water or Braun-Collins solution at 4, 20 or 39 degrees C and stored for 4, 12 or 24h. Normal preantral follicles exhibited a healthy oocyte surrounded by one or more well-organized layers of granulosa cells. The ooplasm contained numerous rounded or elongated mitochondria with continuous mitochondrial membranes. Golgi complexes were rare. Both smooth and rough endoplasmic reticulum were observed, either as isolated aggregations or complex associations with mitochondria and vesicles. Degenerated preantral follicles in the control tissue exhibited pycnotic nuclei of the oocyte, vacuolated ooplasm and normal granulosa cells. This kind of degeneration also predominated significantly (P<0.05) after preservation at 4 degrees C. In contrast, after preservation at 20 or 39 degrees C a significant predominance (P<0.05) of preantral follicles showing a retracted oocyte and swollen granulosa cells was observed. These follicles showed large irregularity of the oocyte and nuclear outlines. The ooplasm exhibited moderate proliferation of the endoplasmic reticulum and mitochondria showed disappearance of most of the cristae and damage to the mitochondrial membrane. Some follicles had numerous vacuoles in the ooplasm. Granulosa cells were spread and a low density of organelles was observed. The alterations in follicular structure progressed with an increase of temperature from 20 to 39 degrees C as well as with an increase of the incubation time from 4 to 12, or 24h. In conclusion, the present study shows for the first time that initial proliferation of the endoplasmic reticulum and damage to mitochondria are the first signs of degeneration in goat preantral follicles during storage in vitro.
Collapse
Affiliation(s)
- J R Silva
- Laboratory of Manipulation of Oocytes Enclosed in Preantral Follicles - LAMOFOPA, Faculty of Veterinary, University of Ceará, CE, Fortaleza, Brazil.
| | | | | | | | | | | | | |
Collapse
|
50
|
Barbosa MF, Ferreira MA. [Brazilian Nurses Association-Rio de Janeiro Chapter: a short history]. Rev Bras Enferm 2001; 54:328-39. [PMID: 12240657 DOI: 10.1590/s0034-71672001000200022] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The objective of the present article is to reveal the work done by the Brazilian Association of Nursing (ABEn) in the federal state of Rio de Janeiro along its fifty-five years of history. It describes the foundation of the main office and regional branches, the acquisition of the building for the headquarters, the promotion of events, awards offered, achievements and other interesting facts that constitute the history of this association. The study also brings the names of the presidents and vice-presidents from 1963 until the present days. It finalizes with the event of the assassination of the president of the association and his wife, in 1999.
Collapse
Affiliation(s)
- M F Barbosa
- Departamento de Enfermagem Fundamental da EEAN/UFRJ
| | | |
Collapse
|