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Novak J, Ferreira CST, Golim MA, Silva MG, Marconi C. Covariates of vaginal microbiota and pro-inflammatory cytokine levels in women of reproductive age. Benef Microbes 2023; 14:131-142. [PMID: 37026365 DOI: 10.3920/bm2022.0060] [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] [Indexed: 04/08/2023]
Abstract
This study aimed to assess the correlation between covariates of the vaginal microbiota and local levels of proinflammatory cytokines in women of reproductive age presenting four molecularly defined bacterial community-state types (CSTs). We enrolled 133 non-pregnant women who attended primary care health clinics for routine Pap-testing. Molecular profiling of vaginal microbiota was performed by V3-V4 16S rRNA sequencing. The covariates of vaginal microbiota included were: vaginal pH, total bacterial cell count, diversity (Shannon index), -richness and dominant taxa abundances. Levels of interleukin (IL)-1β, IL-6, IL-8, and tumour necrosis factor (TNF-α) were measured by enzyme-linked immunosorbent assays in supernatants of cervicovaginal fluids. Nonparametric Kruskal-Wallis test was used to compare microbiota covariates and cytokines among different CSTs. Spearman's tests were performed to assess correlations across the measured parameters. A total of 96 (72.2%) participants had CSTs dominated by Lactobacillus spp. (Lactobacillus crispatus CST I, n=38; Lactobacillus gasseri CST II, n=20; and Lactobacillus iners CST III, n=38). A total of 37 (27.8%) presented the Lactobacillus-depleted CST IV. Total bacterial count was higher in CST II (1.29E+05, 3.40E+04-6.69E+05) compared to other Lactobacillus-dominated CSTs (p=0.0003). The highest values of microbiota diversity (1.85; 0.23-2.68) and richness (27.0; 5.0-37.0) were observed in CST IV (P<0.0001). Lower levels of IL-1β were observed in CST I (5.4; 0.0-3,256) when compared to CST III (51.7; 0.0-2,616) and to CST IV (56.2; 0.0-3,407) (P=0.008). Levels of IL-6 were higher in CST II (4.13; 0-131.4) than in CST IV (0.0-58.27) (P=0.02). Correlation tests showed an overall distinct profile of CST II when compared to other Lactobacillusdominated CSTs, particularly regarding the correlation between total bacterial load and cytokines (r>0.39). In conclusion, this study provides evidence of a single pro-inflammatory signature of L. gasseri-dominated microbiota in response to bacterial load. Further studies evaluating a broader range of inflammation markers are warranted.
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Affiliation(s)
- J Novak
- São Paulo State University (UNESP), Botucatu Medical School, Department of Pathology, Av. Prof. Mário Rubens Guimarães Montenegro, s/n, 18618-970 Botucatu-SP, Brazil
| | - C S T Ferreira
- São Paulo State University (UNESP), Botucatu Medical School, Department of Pathology, Av. Prof. Mário Rubens Guimarães Montenegro, s/n, 18618-970 Botucatu-SP, Brazil
| | - M A Golim
- São Paulo State University (UNESP), Botucatu Medical School, Center Blood, Av. Prof. Mário Rubens Guimarães Montenegro, s/n, 18618-970 Botucatu-SP, Brazil
| | - M G Silva
- São Paulo State University (UNESP), Botucatu Medical School, Department of Pathology, Av. Prof. Mário Rubens Guimarães Montenegro, s/n, 18618-970 Botucatu-SP, Brazil
| | - C Marconi
- São Paulo State University (UNESP), Botucatu Medical School, Department of Pathology, Av. Prof. Mário Rubens Guimarães Montenegro, s/n, 18618-970 Botucatu-SP, Brazil
- Federal University of Paraná (UFPR), Department of Basic Pathology, Av. Cel. Francisco H. dos Santos, 100 - Jardim das Américas, Curitiba, PR 81531-980, Brazil
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Sisco MC, Silva MG, Lopez B, Arguelles C, Mendonça-Lima L, de Waard JH, Duarte RS, Suffys PN. Newly sequenced genomes of four Bacillus Calmette Guerin vaccines. Mem Inst Oswaldo Cruz 2020; 115:e190401. [PMID: 32401897 PMCID: PMC7212995 DOI: 10.1590/0074-02760190401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 04/13/2020] [Indexed: 11/24/2022] Open
Abstract
Bacillus Calmette Guerin (BCG) vaccines comprise a family of related strains. Whole genome sequencing has allowed the better characterisation of the differences between many of the BCG vaccines. As sequencing technologies improve, updating of publicly available sequence data becomes common practice. We hereby announce the draft genome of four commonly used BCG vaccines in Brazil, Argentina and Venezuela.
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Affiliation(s)
- Maria Carolina Sisco
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Médica, Laboratório de Micobactérias, Rio de Janeiro, RJ, Brasil
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Biologia Molecular Aplicada às Micobactérias, Rio de Janeiro, RJ, Brasil
| | - Marlei Gomés Silva
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Médica, Laboratório de Micobactérias, Rio de Janeiro, RJ, Brasil
| | - Beatriz Lopez
- Instituto Nacional de Enfermedades Infecciosas, Buenos Aires, Argentina
| | - Claudia Arguelles
- Instituto Nacional de Producción de Biológicos Carlos G Malbrán, Buenos Aires, Argentina
| | - Leila Mendonça-Lima
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Genômica Funcional e Bioinformática, Rio de Janeiro, RJ, Brasil
| | - Jacobus H de Waard
- Servicio Autónomo Instituto de Biomedicina Dr Jacinto Convit, Caracas, Venezuela
- One Health Research Group, Universidad de Las Américas, Facultad de Ciencias de la Salud, Quito, Ecuador
| | - Rafael Silva Duarte
- Universidade Federal do Rio de Janeiro, Instituto de Microbiologia Paulo de Góes, Departamento de Microbiologia Médica, Laboratório de Micobactérias, Rio de Janeiro, RJ, Brasil
| | - Philip Noel Suffys
- Fundação Oswaldo Cruz-Fiocruz, Instituto Oswaldo Cruz, Laboratório de Biologia Molecular Aplicada às Micobactérias, Rio de Janeiro, RJ, Brasil
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Oliveira-Macêdo LAR, Pacheco AGM, Lima-Saraiva SRG, Silva JC, Oliveira-Júnior RG, Souza GR, Lavor EM, Silva MG, Ferro JNS, Barreto E, Oliveira VR, Almeida JRGS. Fractions of Selaginella convoluta (Arn.) Spring (Selaginellaceae) attenuate the nociceptive behavior events in mice. BRAZ J BIOL 2019; 80:57-65. [PMID: 31017233 DOI: 10.1590/1519-6984.189761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 06/04/2018] [Indexed: 11/22/2022] Open
Abstract
Selaginella convoluta (Arn.) Spring is a species popularly known as "jericó", and used in folk medicine as analgesic and anti-inflammatory. This study aimed to investigate in mice the antinociceptive and anti-inflammatory activities of the hexane (Sc-Hex) and chloroform (Sc-CHCl3) fractions (100, 200 and 400 mg/kg) obtained by partition of crude ethanol extract from S. convoluta. The preliminary phytochemical analysis of the fractions was performed. Antinociceptive activity was evaluated by writhing, formalin and hot-plate tests. Anti-inflammatory activity was evaluated using carrageenan-induced pleurisy. The rota-rod test was used to evaluate motor coordination. Preliminary phytochemical screening showed that the Sc-Hex and the Sc-CHCl3 were positive for the presence of flavonoids, anthracene derivatives, quinones, triterpenes and steroids. Inhibition of writhing was observed for fractions tested. The Sc-Hex at all doses tested was effective in reducing the nociceptive behavior produced by formalin only in the second phase. However, the Sc-CHCl3 decreased the paw licking time in the first and second phases. In the hot plate no significant effect was observed for any fraction. In the rota-rod test, treated mice did not demonstrate any significant motor performance changes. In the carrageenan-induced pleurisy, Sc-CHCl3 (200 mg/kg) reduced cell migration to the pleural cavity. These results reveal the antinociceptive properties of S. convoluta , which support, in part, its traditional use, since the fractions did not presented significant activity in the inflammatory response profile. We further verify that this antinociceptive effect could be by activation of nociceptive peripheral pathway.
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Affiliation(s)
- L A R Oliveira-Macêdo
- Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Universidade Federal do Vale do São Francisco - UNIVASF, CEP 56304-205, Petrolina, PE, Brasil
| | - A G M Pacheco
- Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Universidade Federal do Vale do São Francisco - UNIVASF, CEP 56304-205, Petrolina, PE, Brasil
| | - S R G Lima-Saraiva
- Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Universidade Federal do Vale do São Francisco - UNIVASF, CEP 56304-205, Petrolina, PE, Brasil
| | - J C Silva
- Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Universidade Federal do Vale do São Francisco - UNIVASF, CEP 56304-205, Petrolina, PE, Brasil
| | - R G Oliveira-Júnior
- Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Universidade Federal do Vale do São Francisco - UNIVASF, CEP 56304-205, Petrolina, PE, Brasil
| | - G R Souza
- Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Universidade Federal do Vale do São Francisco - UNIVASF, CEP 56304-205, Petrolina, PE, Brasil
| | - E M Lavor
- Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Universidade Federal do Vale do São Francisco - UNIVASF, CEP 56304-205, Petrolina, PE, Brasil
| | - M G Silva
- Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Universidade Federal do Vale do São Francisco - UNIVASF, CEP 56304-205, Petrolina, PE, Brasil
| | - J N S Ferro
- Laboratório de Biologia Celular, Universidade Federal de Alagoas - UFAL, CEP 57072-970, Maceió, AL, Brasil
| | - E Barreto
- Laboratório de Biologia Celular, Universidade Federal de Alagoas - UFAL, CEP 57072-970, Maceió, AL, Brasil
| | - V R Oliveira
- Empresa Brasileira de Pesquisa Agropecuária - EMBRAPA, CEP 56302-970, Petrolina, PE, Brasil
| | - J R G S Almeida
- Núcleo de Estudos e Pesquisas de Plantas Medicinais - NEPLAME, Universidade Federal do Vale do São Francisco - UNIVASF, CEP 56304-205, Petrolina, PE, Brasil
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Gualandro DM, Shinjo SK, Santoro J, Calderaro D, Yu PC, Strunz C, Silva MG, Caramelli B. P3487The role of high-sensitivity troponin I for risk prediction in patients with systemic autoimmune myopathies. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- D M Gualandro
- Heart Institute (InCor), University of São Paulo Medical School, Cardiology, São Paulo, Brazil
| | - S K Shinjo
- Clinics Hospital, University of São Paulo Medical School, Reumathology, São Paulo, Brazil
| | - J Santoro
- Heart Institute (InCor), University of São Paulo Medical School, Cardiology, São Paulo, Brazil
| | - D Calderaro
- Heart Institute (InCor), University of São Paulo Medical School, Cardiology, São Paulo, Brazil
| | - P C Yu
- Heart Institute (InCor), University of São Paulo Medical School, Cardiology, São Paulo, Brazil
| | - C Strunz
- Heart Institute (InCor), University of São Paulo Medica School, Laboratory, Sao Paulo, Brazil
| | - M G Silva
- Clinics Hospital, University of São Paulo Medical School, Reumathology, São Paulo, Brazil
| | - B Caramelli
- Heart Institute (InCor), University of São Paulo Medical School, Cardiology, São Paulo, Brazil
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Ataide EC, Perales SR, Silva MG, Filho FC, Sparapani AC, Latuf Filho PF, Stucchi RSB, Vassallo J, Escanhoela CAF, Boin IFSF. Immunoexpression of Heat Shock Protein 70, Glypican 3, Glutamine Synthetase, and Beta-Catenin in Hepatocellular Carcinoma After Liver Transplantation: Association Between Positive Glypican 3 and Beta-Catenin With the Presence of Larger Nodules. Transplant Proc 2018; 49:858-862. [PMID: 28457411 DOI: 10.1016/j.transproceed.2017.01.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) is the 6th leading cause of cancer worldwide. Its recurrence ranges from 6% to 26%. In the literature, many factors are associated with higher risk of recurrence, without a clear definition of the best method that could predict this highly lethal event. OBJECTIVE The aim of this study was to evaluate the immunoexpression of immunohistochemical markers: HSP70, glypican 3, glutamine synthetase, and beta-catenin, as well as studying their association with tumor characteristics and prognosis of patients undergoing liver transplantation for HCC. METHODS We studied 90 patients who underwent liver transplantation from 1998 to 2012. Afterwards we evaluated factors related to survival, tumor recurrence, and the correlation of expression of the immunohistochemical markers. RESULTS Immunohistochemical marker glutamine synthetase showed a positive trend toward better survival. HSP70-positive patients had a higher prevalence of histologic grade III. Patients with positive glypican 3 showed larger lesions and a higher number with AFP >200 ng/mL. Patients with positive beta-catenin showed larger nodules and more with histologic grade III. The association between beta-catenin and glypican 3 showed positive association with larger nodules. CONCLUSIONS Most of the markers studied had a correlation with at least one of the variables studied, confirming our hypothesis that these markers can indeed assist in assessing the prognosis of patients undergoing liver transplantation for HCC.
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Affiliation(s)
- E C Ataide
- Unit of Liver Transplantation, State University of Campinas, São Paulo, Brazil.
| | - S R Perales
- Unit of Liver Transplantation, State University of Campinas, São Paulo, Brazil
| | - M G Silva
- Unit of Liver Transplantation, State University of Campinas, São Paulo, Brazil
| | - F C Filho
- Unit of Liver Transplantation, State University of Campinas, São Paulo, Brazil
| | - A C Sparapani
- Department of Pathologic Anatomy, State University of Campinas, São Paulo, Brazil
| | - P F Latuf Filho
- Department of Pathologic Anatomy, State University of Campinas, São Paulo, Brazil
| | - R S B Stucchi
- Unit of Liver Transplantation, State University of Campinas, São Paulo, Brazil
| | - J Vassallo
- Department of Pathologic Anatomy, State University of Campinas, São Paulo, Brazil
| | - C A F Escanhoela
- Department of Pathologic Anatomy, State University of Campinas, São Paulo, Brazil
| | - I F S F Boin
- Unit of Liver Transplantation, State University of Campinas, São Paulo, Brazil
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Wise LN, Kappmeyer LS, Silva MG, White SN, Grause JF, Knowles DP. Verification of post-chemotherapeutic clearance of Theileria equi through concordance of nested PCR and immunoblot. Ticks Tick Borne Dis 2017; 9:135-140. [PMID: 28887100 DOI: 10.1016/j.ttbdis.2017.08.007] [Citation(s) in RCA: 13] [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: 05/13/2017] [Revised: 07/24/2017] [Accepted: 08/17/2017] [Indexed: 11/27/2022]
Abstract
Certain countries including the United States remain non-endemic for particular infectious diseases such as equine piroplasmosis through import restrictions and surveillance. Endemic regions often employ premunition as the primary method to control disease, however in non-endemic countries, chemosterilization combined with methods to confirm parasite elimination are required to maintain disease-free status. The ability of imidocarb diproprionate (ID) to clear persistent Theileria equi infection from infected horses has been shown through the inability of treated horses to transmit via blood transfer. However, the common lengthy persistence of anti-T. equi antibody causes regulatory tests such as cELISA or IFA to remain positive for extended periods. Persistence of positive testing creates challenges for regulatory veterinary medicine and international trade. Concordance between nested polymerase chain reaction (nPCR) targeting the ema1 gene and immunoblotting (IB) measuring declination in anti-EMA1 and anti-EMA2 antibody were used to verify clearance of T. equi from 179 ID-treated horses. These data support the use of IB to demonstrate declining anti-EMA1 and EMA2 titers in T. equi-infected horses subsequent to successful ID treatment. Such data provide concordant support to a negative nPCR and allow for a more timely determination of effective ID clearance of T. equi. The post ID treatment results indicate that while nPCR was consistently negative by 14 days and cELISA generally remained positive after 1 year, immunoblot was on average negative after 4 months and 100% in agreement with nPCR.
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Affiliation(s)
- L N Wise
- Animal Disease Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Pullman, WA, USA; School of Veterinary Medicine, St. George's University, True Blue, Grenada, W. I..
| | - L S Kappmeyer
- Animal Disease Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Pullman, WA, USA
| | - M G Silva
- Animal Disease Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Pullman, WA, USA; Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - S N White
- Animal Disease Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Pullman, WA, USA; Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
| | - J F Grause
- Animal and Plant Health Inspection Service, Veterinary Services, Science, Technology and Analysis Services, National Veterinary Services Laboratories, Ames, IA, USA
| | - D P Knowles
- Animal Disease Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Pullman, WA, USA; Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA, USA
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Souza GR, Oliveira-Junior RG, Diniz TC, Branco A, Lima-Saraiva SRG, Guimarães AL, Oliveira AP, Pacheco AGM, Silva MG, Moraes-Filho MO, Costa MP, Pessoa CÓ, Almeida JRGS. Assessment of the antibacterial, cytotoxic and antioxidant activities of Morus nigra L. (Moraceae). BRAZ J BIOL 2017; 78:248-254. [PMID: 28832831 DOI: 10.1590/1519-6984.05316] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 12/14/2016] [Indexed: 11/22/2022] Open
Abstract
This study was carried out to assess the antibacterial, cytotoxic and antioxidant activities of extracts of Morus nigra L. HPLC was used to determine the fingerprint chromatogram of the crude ethanolic extract (Mn-EtOH). The antibacterial effect was assessed through the method of microdilution. The cytotoxicity was tested against human tumour cell lines using the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. The total phenolic and flavonoid contents were also assessed through the Folin-Ciocalteu and aluminum chloride methods, respectively. Antioxidant activities of the extracts were evaluated by using 2,2-diphenyl-1-picrylhydrazil (DPPH) radical scavenging and β-carotene-linoleic acid bleaching methods. The presence of phenolic compounds in Mn-EtOH was confirmed using HPLC. The extracts showed activity against most microorganisms tested. The extracts did not show any expressive antiproliferative effect in the assessment of cytotoxicity. The most significant total phenolic content was 153.00 ± 11.34 mg of gallic acid equivalent/g to the ethyl acetate extract (AcOEt). The total flavonoid content was 292.50 ± 70.34 mg of catechin equivalent/g to the AcOEt extract, which presented the best antioxidant activity (IC50 50.40 ± 1.16 μg/mL) for DPPH scavenging. We can conclude that this species shows strong antibacterial and antioxidant activities, as well as weak cytotoxic effects.
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Affiliation(s)
- G R Souza
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - R G Oliveira-Junior
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - T C Diniz
- Programa de Pós-graduação em Biotecnologia, Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brazil
| | - A Branco
- Programa de Pós-graduação em Biotecnologia, Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brazil
| | - S R G Lima-Saraiva
- Programa de Pós-graduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | - A L Guimarães
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - A P Oliveira
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - A G M Pacheco
- Programa de Pós-graduação em Biotecnologia, Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brazil
| | - M G Silva
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - M O Moraes-Filho
- Laboratório Nacional de Oncologia Experimental, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - M P Costa
- Laboratório Nacional de Oncologia Experimental, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - C Ó Pessoa
- Laboratório Nacional de Oncologia Experimental, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - J R G S Almeida
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
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8
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Oliveira MG, Mazorra LM, Souza AF, Silva GMC, Correa SF, Santos WC, Saraiva KDC, Teixeira AJ, Melo DF, Silva MG, Silva MAP, Arrabaça JDC, Costa JH, Oliveira JG. Involvement of AOX and UCP pathways in the post-harvest ripening of papaya fruits. J Plant Physiol 2015; 189:42-50. [PMID: 26513459 DOI: 10.1016/j.jplph.2015.10.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 06/29/2015] [Revised: 09/25/2015] [Accepted: 10/01/2015] [Indexed: 06/05/2023]
Abstract
Enhanced respiration during ripening in climacteric fruits is sometimes associated with an uncoupling between the ATP synthesis and the mitochondrial electron transport chain. While the participation of two energy-dissipating systems, one of which is mediated by the alternative oxidase (AOX) and the other mediated by the uncoupling protein (UCP), has been linked to fruit ripening, the relation between the activation of both mitochondrial uncoupling systems with the transient increase of ethylene synthesis (ethylene peak) remains unclear. To elucidate this question, ethylene emission and the two uncoupling (AOX and UCP) pathways were monitored in harvested papaya fruit during the ripening, from green to fully yellow skin. The results confirmed the typical climacteric behavior for papaya fruit: an initial increase in endogenous ethylene emission which reaches a maximum (peak) in the intermediate ripening stage, before finally declining to a basal level in ripe fruit. Respiration of intact fruit also increased and achieved higher levels at the end of ripening. On the other hand, in purified mitochondria extracted from fruit pulp the total respiration and respiratory control decrease while an increase in the participation of AOX and UCP pathways was markedly evident during papaya ripening. There was an increase in the AOX capacity during the transition from green fruit to the intermediate stage that accompanied the transient ethylene peak, while the O2 consumption triggered by UCP activation increased by 80% from the beginning to end stage of fruit ripening. Expression analyses of AOX (AOX1 and 2) and UCP (UCP1-5) genes revealed that the increases in the AOX and UCP capacities were linked to a higher expression of AOX1 and UCP (mainly UCP1) genes, respectively. In silico promoter analyses of both genes showed the presence of ethylene-responsive cis-elements in UCP1 and UCP2 genes. Overall, the data suggest a differential activation of AOX and UCP pathways in regulation related to the ethylene peak and induction of specific genes such as AOX1 and UCP1.
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Affiliation(s)
- M G Oliveira
- Laboratório de Melhoramento Genético Vegetal, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ 28013602, Brazil
| | - L M Mazorra
- Laboratório de Melhoramento Genético Vegetal, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ 28013602, Brazil
| | - A F Souza
- Laboratório de Melhoramento Genético Vegetal, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ 28013602, Brazil
| | - G M C Silva
- Laboratório de Melhoramento Genético Vegetal, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ 28013602, Brazil
| | - S F Correa
- Laboratório de Ciências Físicas, Universidade Estadual no Norte Fluminense, Campos dos Goytacazes, RJ 28013602, Brazil
| | - W C Santos
- Laboratório de Ciências Físicas, Universidade Estadual no Norte Fluminense, Campos dos Goytacazes, RJ 28013602, Brazil
| | - K D C Saraiva
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza, CE 60455760, Brazil
| | - A J Teixeira
- Laboratório de Melhoramento Genético Vegetal, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ 28013602, Brazil
| | - D F Melo
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza, CE 60455760, Brazil
| | - M G Silva
- Laboratório de Ciências Físicas, Universidade Estadual no Norte Fluminense, Campos dos Goytacazes, RJ 28013602, Brazil
| | - M A P Silva
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, MG 36570000, Brazil
| | - J D C Arrabaça
- Faculdade de Ciências, Universidade de Lisboa, Lisboa 1749016, Portugal
| | - J H Costa
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza, CE 60455760, Brazil
| | - J G Oliveira
- Laboratório de Melhoramento Genético Vegetal, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ 28013602, Brazil.
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Rocha-Gonçalves F, Van-Zeller P, Correia dos Santos J, Silva MG, Cerqueira Gomes M. VCG studies of 143 consecutive cases of mitral stenosis. Adv Cardiol 2015; 16:343-9. [PMID: 132102 DOI: 10.1159/000398421] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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10
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Tamega ADA, Miot HA, Moço NP, Silva MG, Marques MEA, Miot LDB. Gene and protein expression of oestrogen-β and progesterone receptors in facial melasma and adjacent healthy skin in women. Int J Cosmet Sci 2014; 37:222-8. [PMID: 25439299 DOI: 10.1111/ics.12186] [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: 09/18/2014] [Accepted: 11/16/2014] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Compare gene and protein expression for oestrogen receptor-β (ER-β) and progesterone receptor (PR) in facial melasma and adjacent healthy skin. METHODS A cross-sectional study including 42 women with facial melasma, conducted at the Dermatology Service of Botucatu Medical School of São Paulo State University, Brazil. Biopsies of the melasma skin were performed, together with healthy surrounding skin. The gene expression (real-time PCR) of the hormone receptors in the tissue was evaluated. Subsequently, skin fragments were immunostained for nuclear ER-β and PR, evaluated according to their HSCORE (epidermis) and percentage of staining per microscopic field (dermis). RESULTS Messenger RNA tissue expression for ER-β and PR showed no difference between melasma-affected skin fragments and the healthy perilesional areas (P > 0.2). Median nuclear epithelial expression for ER-β and PR was higher in lesioned skin (HSCORE 157 and 58) than in the healthy perilesional skin (HSCORE 97 and 19; P < 0.01), with no difference in dermal immunostaining. Nuclear histological expression for ER-β was associated to sun-induced melasma and negative familiar background; PR expression was associated to sun-induced melasma and darker phototypes. CONCLUSION No difference was observed in gene expression for oestrogen-β and progesterone receptors in melasma-affected skin compared with adjacent healthy skin. However, the higher protein expression of these receptors in melasma-affected epithelia suggests hormonal participation in the pathogenesis of this disease.
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Affiliation(s)
- A de A Tamega
- Department of Dermatology and Radiotherapy of the Botucatu Medical School, São Paulo State University, Campus Universitário de Rubião Jr., 18618-970, Botucatu, Brazil
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11
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Silva MB, Silva MG, Shinjo SK. Serum hyaluronic acid in polymyositis: high serum levels tend to correlate with disease activity. Acta Reumatol Port 2014; 39:248-253. [PMID: 25326405] [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: 06/04/2023]
Abstract
OBJECTIVE Polymyositis (PM) is a rare systemic idiopathic inflammatory myopathy. Hyaluronic acid (HA) is closely linked to inflammatory cellular reactions and disease activity. Increased serum levels of HA have been reported in several inflammatory diseases, but currently, there are no studies analysing the HA in PM. Thus, clinical association of HA with PM in patients was determined in the present study. METHODS The present cross-sectional study was performed at one centre from 2012 to 2013 and included 35 consecutive adult patients with PM (Bohan and Peter criteria, 1975) and 38 adult healthy volunteers. The serum HA was assessed with anti-HA antibody, using the specific ELISA/EIA kits according to the manufacturer's protocol. RESULTS The average age, distribution of females and ethnicity were comparable in patients with PM and the control group. Regarding disease status, patients with PM had a median patient visual analogue score (VAS) of 2 [0-6], physician VAS of 1 [0-3], MMT-8 of 74 [68-80] and HAQ of 0.48 [0.00-1.14]. The serum levels of HA were also significantly increased in patients with PM (390±412 ng/mL) compared to healthy subjects (129±119 ng/mL), p=0.001. In an additional analysis, the serum levels of HA did not correlate with PM demographic data (gender and ethnicity), current organ involvement or autoantibodies and were not been influenced by the use of prednisolone and/or immunosuppressives by the PM patients. However, there was a positive correlation between serum levels of HA and VAS (patient and physician), and a negative correlation between serum levels of HA and MMT-8. CONCLUSION High serum levels of HA were observed in patients with PM and tended to correlate with PM disease activity. Additional studies are needed to assess this correlation, as well as to understand the mechanism involved in the pathogenesis of PM by HA.
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Affiliation(s)
- M B Silva
- Faculdade de Medicina da Universidade de São Paulo
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12
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Polettini J, Silva MG, Kacerovsky M, Syed TA, Saade G, Menon R. Expression profiles of fetal membrane nicotinamide adenine dinucleotide phosphate oxidases (NOX) 2 and 3 differentiates spontaneous preterm birth and pPROM pathophysiologies. Placenta 2014; 35:188-94. [PMID: 24439294 DOI: 10.1016/j.placenta.2013.12.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 11/27/2013] [Accepted: 12/23/2013] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Nicotinamide adenine dinucleotide phosphate oxidases (NOX 1-5) are enzymes that generate cellular reactive oxygen species (ROS) besides mitochondria and might be important ROS sources associated with pregnancy complications, particularly preterm premature rupture of membranes (pPROM), that has been related to ROS. OBJECTIVE To characterize NOX enzymes expression in human fetal membranes. METHODS Differential expression and localization of NOX isoforms in human fetal membranes collected from women with uncomplicated pregnancies at term, preterm birth (PTB) or pPROM and in vitro in normal term membranes maintained in an organ explant system stimulated with water-soluble cigarette smoke extract (wsCSE) were documented by real time PCR and immunohistochemistry. RESULTS Fetal membranes from term deliveries, PTB and pPROM expressed NOX 2, 3 and 4 mRNAs whereas NOX 1 and 5 were not detected. NOX 2 expression was 2.3-fold higher in PTB than pPROM (p = 0.005) whereas NOX 3 was 2.2-fold higher in pPROM compared to PTB (p = 0.04). NOX 2 and 3 expressions at term mimicked pPROM and PTB, respectively. No difference in NOX 4 expression was observed among the studied groups. NOX 2, 3 and 4 were localized to both amniotic and chorionic cells. Expression of NOX 2, 3 and 4 were not significant in wsCSE-stimulated membranes compared to untreated controls. DISCUSSION/CONCLUSIONS NOX enzymes are present in the fetal membranes and are differentially expressed in PTB and pPROM. Absence of any changes in NOXs expression after wsCSE stimulation suggests ROS generation in the membranes does not always correlate with NOX expression.
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Affiliation(s)
- J Polettini
- Division of Maternal-Fetal Medicine and Perinatal Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, USA; Department of Pathology, Botucatu Medical School, UNESP - Univ. Estadual Paulista, Botucatu, Sao Paulo, Brazil
| | - M G Silva
- Department of Pathology, Botucatu Medical School, UNESP - Univ. Estadual Paulista, Botucatu, Sao Paulo, Brazil
| | - M Kacerovsky
- Biomedical Research Center, University Hospital Hradec Kralove, Czech Republic; Department of Obstetrics and Gynecology, Charles University in Prague, Faculty of Medicine, Hradec Kralove, Czech Republic
| | - T A Syed
- Division of Maternal-Fetal Medicine and Perinatal Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, USA
| | - G Saade
- Division of Maternal-Fetal Medicine and Perinatal Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, USA
| | - R Menon
- Division of Maternal-Fetal Medicine and Perinatal Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, USA.
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13
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Silva MG, Sala-Blanch X, Marín R, Espinoza X, Arauz A, Morros C. [Ultrasound-guided axillary block: anatomical variations of terminal branches of the brachial plexus in relation to the brachial artery]. Rev Esp Anestesiol Reanim 2014; 61:15-20. [PMID: 24161518 DOI: 10.1016/j.redar.2013.07.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 05/05/2013] [Revised: 07/11/2013] [Accepted: 07/24/2013] [Indexed: 06/02/2023]
Abstract
OBJECTIVES To describe the distribution of the terminal branches of the brachial plexus at the axillary level and define distribution patterns after ultrasound evaluation. MATERIAL AND METHOD Fifty volunteers underwent ultrasound bilateral axillary brachial plexus scanning exploration. Nerve distribution around the humeral artery was described and the distance between each nerve and the center of the artery was measured. The distance and relationship between the ulnar nerve and the humeral vein were also recorded. RESULTS The median nerve was located in the anterolateral quadrant (-29±40°) and at a mean distance of 2.1±0.9mm from the artery (85%). The ulnar nerve was found at 53±26° and at 4.2±2.1mm from the artery in the anteromedial quadrant (90%), anterolateral to the vein in 46% of cases, and deep to it in 54%. The radial nerve was at 122±38° and at 3.3±1.7mm from the artery in the posteromedial quadrant (86%). The musculocutaneous nerve was found at -103±22° and 9.3±5.6mm from the artery in the posterolateral quadrant (90%) and in the anterolateral quadrant (-55±16°) at 4.8±2.7mm (10%). There were no differences regarding laterality, gender or overweight patients. CONCLUSIONS Our results allow defining four different anatomical patterns, two based in the position of the musculocutaneous nerve and two based on the disposition of the ulnar nerve with respect to the humeral vein. These patterns were not related to laterality, gender or body weight.
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Affiliation(s)
- M G Silva
- Fellow en Anestesia Regional, Universitat de Barcelona, Barcelona, España
| | - X Sala-Blanch
- Servicio de Anestesiología, Hospital Clínic, Universitat de Barcelona, Barcelona, España.
| | - R Marín
- Fellow en Anestesia Regional, Universitat de Barcelona, Barcelona, España
| | - X Espinoza
- Fellow en Anestesia Regional, Universitat de Barcelona, Barcelona, España
| | - A Arauz
- Unidad de Cirugía Mayor Ambulatoria, Hospital Clínic, Universitat de Barcelona, Barcelona, España
| | - C Morros
- Servicio de Anestesiología, Clínica Diagonal, Barcelona, España
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Martins LR, Lúcio P, Melão A, Antunes I, Cardoso BA, Stansfield R, Bertilaccio MTS, Ghia P, Drygin D, Silva MG, Barata JT. Activity of the clinical-stage CK2-specific inhibitor CX-4945 against chronic lymphocytic leukemia. Leukemia 2013; 28:179-82. [PMID: 23925046 DOI: 10.1038/leu.2013.232] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- L R Martins
- Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Lisbon, Portugal
| | - P Lúcio
- CEDOC, Faculdade de Ciências Médicas, FCM, Universidade Nova de Lisboa and Instituto Português de Oncologia, Lisbon, Portugal
| | - A Melão
- Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Lisbon, Portugal
| | - I Antunes
- Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Lisbon, Portugal
| | - B A Cardoso
- Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Lisbon, Portugal
| | | | | | - P Ghia
- 1] Istituto Scientifico San Raffaele, Milano, Italy [2] Università Vita-Salute San Raffaele, Milano, Italy
| | - D Drygin
- Cylene Pharmaceuticals, San Diego, CA, USA
| | - M G Silva
- CEDOC, Faculdade de Ciências Médicas, FCM, Universidade Nova de Lisboa and Instituto Português de Oncologia, Lisbon, Portugal
| | - J T Barata
- Faculdade de Medicina, Instituto de Medicina Molecular, Universidade de Lisboa, Lisbon, Portugal
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15
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Marconi C, Donders GGG, Bellen G, Brown DR, Parada CMGL, Silva MG. Sialidase activity in aerobic vaginitis is equal to levels during bacterial vaginosis. Eur J Obstet Gynecol Reprod Biol 2013; 167:205-9. [PMID: 23375395 DOI: 10.1016/j.ejogrb.2012.12.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [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: 07/18/2012] [Revised: 11/05/2012] [Accepted: 12/01/2012] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To evaluate levels of proinflammatory cytokines and sialidase activity in aerobic vaginitis (AV) in relation to normal vaginal flora and bacterial vaginosis (BV). STUDY DESIGN In this cross-sectional study, a total of 682 consecutive non-pregnant women attending the gynecology service were assessed and 408 women were included. Vaginal rinsing samples were collected from 223 women with microscopic finding of BV (n=98), aerobic vaginitis (n=25) and normal flora (n=100). Samples were tested for interleukin (IL)-1β, IL-6, IL-8, tumor necrosis factor (TNF)-α, and sialidase activity. RESULTS Compared to women with normal flora, vaginal levels of IL-1β were highly increased in both BV and AV (p<0.0001). Significantly higher vaginal IL-6 was detected in AV (p<0.0001) but not in BV, in relation to normal flora. Women with AV also presented increased IL-8 levels (p<0.001), while those with BV presented levels similar to normal flora. Sialidase was increased in BV and AV compared with the normal group (p<0.0001) but no difference in sialidase activity was observed between BV and AV. CONCLUSION A more intense inflammatory host response occurs for AV than for BV when compared with normal flora. Furthermore, the increased sialidase activity in AV and BV indicates that both abnormal vaginal flora types can be harmful to the maintenance of a healthy vaginal environment.
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Affiliation(s)
- C Marconi
- Department of Pathology, Botucatu Medical School, UNESP - Univ Estadual Paulista, Brazil
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16
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Sthel MS, Schramm DU, Lima GR, Carneiro L, Faria RT, Castro MPP, Alexandre J, Toledo R, Silva MG, Vargas H. CO2 laser photoacoustic detection of ammonia emitted by ceramic industries. Spectrochim Acta A Mol Biomol Spectrosc 2011; 78:458-462. [PMID: 21146448 DOI: 10.1016/j.saa.2010.11.009] [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] [Received: 05/21/2010] [Revised: 10/21/2010] [Accepted: 11/15/2010] [Indexed: 05/30/2023]
Abstract
A homemade photoacoustic spectrometer has been constructed for monitoring gas emission from several sources. Numerous air pollutant gases are emitted exhaust of industries, vehicles and power plants. The photoacoustic technique is extremely sensitive and selective in detecting various gases. This work focuses on the gas emitted by the ceramic industry in northern Rio de Janeiro State in Brazil, the ceramic industry plays a remarkable role in the economy activity of this region, in recent years, this region developed into a significant red ceramic complex. The potential impact on the atmospheric environment of the region due to gaseous pollutant emissions from these anthropogenic sources needs to be evaluated. In this work we identified NH3 present in the samples collected in the kiln of a ceramic plant, in the concentration range of 33-52 ppmV. The ammonia gas present in our collected samples might come from the excess nitrogen in the manure soil from where the ceramic material was extracted. This soil was used for the sugarcane culture which is another important economic activity of this region.
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Affiliation(s)
- M S Sthel
- Laboratório de Ciências Físicas, Centro de Ciência e Tecnologia, Universidade Estadual do Norte Fluminense, Av. Alberto Lamego 2000, Campos dos Goytacazes-RJ, RJ, Brazil.
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17
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Rall VLM, Sforcin JM, Augustini VCM, Watanabe MT, Fernandes A, Rall R, Silva MG, Araújo JP. Detection of enterotoxin genes of Staphylococcus SP isolated from nasal cavities and hands of food handlers. Braz J Microbiol 2010; 41:59-65. [PMID: 24031464 PMCID: PMC3768627 DOI: 10.1590/s1517-838220100001000011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2008] [Revised: 04/20/2009] [Accepted: 09/28/2009] [Indexed: 11/29/2022] Open
Abstract
Food handlers, an important factor in food quality, may contain bacteria that are able to cause foodborne disease. The present study aimed to research coagulase-negative (CNS) and -positive staphylococci (CPS) in 82 food handlers, analyzing nasal and hand swabs, with identification of 62 CNS (75.6%) and 20 CPS strains (24.4%). Staphylococcal enterotoxins genes were investigated by PCR. In 20 CPS strains, 19 were positive for one or more genes. The percentage of CNS presenting genes for enterotoxins was high (46.8%). Despite of the staphylococcal species, the most common gene was sea (35.4%), followed by seh and sej (29.2%). The detection of new staphylococcal enterotoxins (SEs) genes showed a higher pathogenic potential in this genus. The presence of these gene points out the importance of CNS not only as contaminant bacteria but also as a pathogen.
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Affiliation(s)
- V L M Rall
- Departamento de Microbiologia e Imunologia, Instituto de Biociências, Universidade Estadual Paulista , Botucatu, SP , Brasil
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18
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Camargo TM, Nazato VS, Silva MG, Cogo JC, Groppo FC, Oshima-Franco Y. Bothrops jararacussu venom-induced neuromuscular blockade inhibited by Casearia gossypiosperma Briquet hydroalcoholic extract. J Venom Anim Toxins Incl Trop Dis 2010. [DOI: 10.1590/s1678-91992010000300009] [Citation(s) in RCA: 10] [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] [Indexed: 11/22/2022] Open
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Rall VLM, Bombo AJ, Lopes TF, Carvalho LR, Silva MG. Honey consumption in the state of São Paulo: a risk to human health? Anaerobe 2007; 9:299-303. [PMID: 16887716 DOI: 10.1016/s1075-9964(03)00121-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2003] [Revised: 06/16/2003] [Accepted: 08/01/2003] [Indexed: 11/20/2022]
Abstract
Infantile botulism was recognized in 1976 as a paralyzing disease caused by the ingestion of viable spores that would germinate and colonize the intestinal tract of infants, with local production and absorption of Clostridium botulinum toxin. The possible origins of botulinic spores are dust and honey, which has been identified as a dietary risk factor for infantile botulism. The objectives of the present study were to investigate 100 honey samples obtained in the state of São Paulo (Brazil) in terms of incidence of botulinic spores and of microbiologic quality, in agreement with Decree 367/9. All 100 samples analysed were negative for the presence of Salmonella, Shigella, total coliforms. C. botulinum spores were present in 3 samples (3%) and molds and yeasts, in 64 samples (64%), but only 25 (25%) exceeded established criteria, with counts ranging from zero to 1.5 x 10(5)CFU/g. The presence of small sporogenic Gram-positive rods was observed in 42 (42%) of the 100 samples tested but these bacteria were not identified.
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Affiliation(s)
- V L M Rall
- Department of Microbiology and Immunology, Instituto de Biociências, Universidade Estadual Paulista UNESP, Caixa Postal 510, cep 18.618-000, Botucatu, São Paulo, Brazil.
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20
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Kokis VM, Moreira BM, Pellegrino FLPC, Silva MG, Long JB, Bastos CCR, Santos KRN. Identification of an imipenem-resistant Pseudomonas aeruginosa clone among patients in a hospital in Rio de Janeiro. J Hosp Infect 2005; 60:19-26. [PMID: 15823652 DOI: 10.1016/j.jhin.2004.11.019] [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] [Received: 11/04/2003] [Accepted: 11/22/2004] [Indexed: 11/20/2022]
Abstract
A total of 85 Pseudomonas aeruginosa isolates were obtained from October 1999 to April 2000 in a tertiary care hospital in Rio de Janeiro, Brazil. The imipenem susceptibility was evaluated by disk diffusion and agar dilution methods, and the clonal relationship among 67 isolates was examined by macrorestriction profile analysis following pulsed-field gel electrophoresis. Imipenem resistance was observed in 52 (61.2%) isolates. Imipenem-resistant P. aeruginosa isolates were separated into 10 genotypes, 73% of which belonged to genotype A. Identification of a single P. aeruginosa clone with a high rate of imipenem resistance emphasizes the need to control the transmission of this organism among patients.
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Affiliation(s)
- V M Kokis
- Department of Medical Microbiology, Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Schuenck RP, Dadalti P, Silva MG, Fonseca LS, Santos KRN. Oxacillin- and mupirocin-resistant Staphylococcus aureus: in vitro activity of silver sulphadiazine and cerium nitrate in hospital strains. J Chemother 2005; 16:453-8. [PMID: 15565911 DOI: 10.1179/joc.2004.16.5.453] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Nasal carriage is an important reservoir of oxacillin-resistant Staphylococcus aureus (ORSA). Mupirocin is a topical drug used to remove S. aureus from nares. However, isolates resistant to mupirocin have been reported all over the world. Silver sulphadiazine (SSD) is a topical agent, which when associated with cerium nitrate (CN), has been shown to be useful in the treatment of burn infections and could be an alternative drug for patient decolonization. Susceptibility to oxacillin in 203 S. aureus isolates was evaluated by the agar diffusion test, while the agar diffusion and agar dilution methods were used for mupirocin. A PCR-multiplex method was performed to detect the mecA and ileS-2 genes. Minimum inhibitory concentration (MICs) to SSD and CN, used alone or in association, were determined by the agar dilution method. One hundred and sixty-three (80.3%) strains were oxacillin-resistant, and 37 (18.2%) were mupirocin resistant. The MIC of SSD alone or in association with CN was 64 microg/mL, while for CN alone was 2048 microg/mL for all isolates. SSD presented anti-staphylococcal activity at concentrations (64 microg/mL) much lower than those commonly used in commercial preparations (10 mg/g) and had good activity against mupirocin-resistant strains, showing that this drug could be used for nasal decolonization in ORSA carries.
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Affiliation(s)
- R P Schuenck
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Nunes APF, Teixeira LM, Bastos CCR, Silva MG, Ferreira RBR, Fonseca LS, Santos KRN. Genomic characterization of oxacillin-resistant Staphylococcus epidermidis and Staphylococcus haemolyticus isolated from Brazilian medical centres. J Hosp Infect 2005; 59:19-26. [PMID: 15571849 DOI: 10.1016/j.jhin.2004.07.021] [Citation(s) in RCA: 30] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2003] [Accepted: 03/18/2004] [Indexed: 11/20/2022]
Abstract
Studies on the genetic diversity of oxacillin-resistant coagulase-negative staphylococcal (CNS) isolates are important for the control and prevention of infections. The present study evaluated the clonal diversity of oxacillin-resistant Staphylococcus epidermidis (ORSE) and Staphylococcus haemolyticus (ORSH) strains, isolated from patients in nine Brazilian medical centres by using pulsed-field gel electrophoresis (PFGE) after digestion of bacterial DNA using SmaI. PFGE analysis of ORSE (N=44) and ORSH (N=25) strains showed the presence of 29 restriction profiles clustered in 16 PFGE types, and 21 distinct profiles in 15 PFGE types, respectively, indicating a large genetic diversity among isolates of both of these species. Among the ORSE isolates, 23 (52%) strains belonged to two predominant PFGE types (named A and B), which were observed in most of the hospitals assessed, indicating the spread of these PFGE types in hospitals located in Rio de Janeiro. The spread of PFGE types of ORSH was also detected in some of the hospitals investigated. The results show that PFGE is a suitable tool for epidemiological studies of oxacillin-resistant CNS, and can be used as a basis for infection control procedures for these multiresistant organisms.
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Affiliation(s)
- A P F Nunes
- Departamento de Microbiologia Médica, Instituto de Microbiologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Araruna JT, Portes VLO, Soares APL, Silva MG, Sthel MS, Schramm DU, Tibana S, Vargas H. Oil spills debris clean up by thermal desorption. J Hazard Mater 2004; 110:161-171. [PMID: 15177737 DOI: 10.1016/j.jhazmat.2004.02.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Oil spills represent a significant environmental issue in Brazil. This paper presents the latest results of a comprehensive experimental programme aimed at understanding how the presence of spilled oil affects the properties of sands and at studying alternatives to remediate the affected shores. Results indicate that oil causes a slight increase in grain size and uniformity, and oiled debris presents a smaller void ratio but a larger unit weight. It was also observed that effective strength parameters for both the natural and oiled debris were the same although the undrained strength of a natural sand is much higher than that of the contaminated sand. At ambient temperature, oiled debris emits methane and ammonia, and these emissions tend to increase with rising temperatures. On the other hand, the oil and grease content from oiled debris decreases with rising temperature and prolonged exposure. Finally, in situ thermal desorption seems to be a promising method for cleaning debris from oil spills. It is simple, fast and avoids all the difficulties associated with digging up the soil for disposal or cleanup.
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Affiliation(s)
- J T Araruna
- Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro, Brazil.
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Rotta NT, Silva AR, Silva CL, Silva FF, Silva MG, Santos LO, Kelbert S, Ohlweiler L. Follow-up of patients with vertically-acquired HIV infection who are more than 9 years old. J Trop Pediatr 2003; 49:253-5. [PMID: 12929891 DOI: 10.1093/tropej/49.4.253] [Citation(s) in RCA: 3] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The aim of this study was to assess the influence of biological markers of infection and antiretroviral therapy on the survival rate and quality of life in children with vertically-acquired HIV infection. This retrospective study was performed between August and October 2000. Outcome measures were presence of neurological disease, CD4 cell count, cranial computerized tomography (CT), electroencephalogram (EEG), use of antiretroviral agents, and mortality. The presence of neurological disease and of pathological findings in cranial computed tomography, and the lack of biological monitoring are associated with poor prognosis. Follow-up of this population should continue to allow long-term assessment of the social and biological impact of vertically-transmitted HIV.
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Affiliation(s)
- N T Rotta
- Pediatric Neurology Unit, Pediatric Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
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Silva MG, Peraçoli JC, Sadatsune T, Abreu ES, Peraçoli MTS. Cervical Lactobacillus and leukocyte infiltration in preterm premature rupture of membranes. Int J Gynaecol Obstet 2003; 81:175-82. [PMID: 12706275 DOI: 10.1016/s0020-7292(03)00043-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVES To evaluate the possible association between microorganisms present in the cervical secretions and amniotic fluid of pregnant women with preterm premature rupture of membranes (PPROM), and histologic chorioamnionitis. METHODS Thirty-seven pregnant women with PPROM and 21 healthy pregnant women were studied. Secretions from the cervical canal and amniotic fluid were collected to isolate microorganisms present in the genital tract. Cervical smears were Gram stained and evaluated microscopically. At delivery, chorioamniotic membranes were collected for histopathologic analysis. RESULTS Microscopic examination of the cervical secretion smears obtained from the PPROM group showed a low rate of Lactobacillus species, large numbers of leukocytes, and a wide diversity of microorganisms compared with the control group. The PPROM group presented an 80% rate of chorioamnionitis. Staphylococcus aureus isolation in cervical secretion was associated with intense inflammatory infiltrate in the membranes and might play a role in the pathogenesis of PPROM. CONCLUSIONS The low colonization of cervical flora by Lactobacillus species associated with an intense leukocyte infiltrate detected in Gram-stained cervical smears can be considered a rapid method of detecting chorioamnionitis in pregnant women with PPROM.
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Affiliation(s)
- M G Silva
- Department of Pathology, Botucatu Medical School, Botucatu, UNESP, São Paulo, Brazil.
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Machado TB, Pinto AV, Pinto MCFR, Leal ICR, Silva MG, Amaral ACF, Kuster RM, Netto-dosSantos KR. In vitro activity of Brazilian medicinal plants, naturally occurring naphthoquinones and their analogues, against methicillin-resistant Staphylococcus aureus. Int J Antimicrob Agents 2003; 21:279-84. [PMID: 12636992 DOI: 10.1016/s0924-8579(02)00349-7] [Citation(s) in RCA: 130] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Fourteen extracts from Brazilian traditional medicinal plants used to treat infectious diseases were used to look for potential antimicrobial activity against multiresistant bacteria of medical importance. Staphylococcus aureus strains were susceptible to extracts of Punica granatum and Tabebuia avellanedae. The minimum inhibitory concentrations (MICs) of the total extracts and of additional fractions of these plants were determined by employing strains of methicillin-resistant (MRSA) and -sensitive (MSSA) S. aureus, including isolates of the PFGE clone A, which is prevalent in Brazil and two ATCC reference strains. A mixture of ellagitannins isolated from P. granatum and two naphthoquinones isolated from T. avellanedae demonstrated antibacterial activity against all S. aureus strains tested. Semi-synthetic furanonaphthoquinones (FNQs) showed lower MICs than those exhibited by natural occurring naphthoquinones. The results indicate that these natural products can be effective potential candidates for the development of new strategies to treat MRSA infections.
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Affiliation(s)
- T B Machado
- Núleo de Pesquisas de Productos Naturais, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Filho LA, Kritski AL, Salles CLG, Sardella IG, Silva MG, Fonseca LS, Saad MHF. Mycobacterium tuberculosis typing: usefulness of DRE-PCR to confirm cross-contamination in the mycobacteriology laboratory of a general reference hospital for AIDS. Int J Tuberc Lung Dis 2002; 6:150-4. [PMID: 11931414] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
In this study two molecular typing methods, a simple double repetitive element PCR-based assay and the standardized restriction fragment length polymorphism (RFLP), were used to confirm cross-contamination in the mycobacteriology laboratory. Clinical specimens from 12 patients, submitted for acid-fast bacilli stain smear and processed for culture in Lowenstein-Jensen on the same day, resulted in positive bacterioscopy (+++) and confluent growth only for one of the patients. The specimens from all the other patients but two were smear-negative and culture-positive, with one or two colonies. None of them had clinical symptoms and radiological findings for active tuberculosis (TB). The suspicion of false-positive cultures arose when a health care worker who had had a PPD skin test conversion, claimed to be healthy and had no TB symptoms, was found to have a positive sputum culture. DRE-PCR demonstrated that all nine cultures typed belonged to one cluster, further confirmed by RFLP. Although DRE-PCR has been found to be poorly reproducible, it has enough discriminatory power to be useful for rapid epidemiological investigation in selected settings.
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Affiliation(s)
- L A Filho
- Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Brasil
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28
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Abstract
This article has as its objective the study of the weight of the newly born, the age group of the mother and the kind of deliveries which took place in the maternity wards in Rio Branco--Acre Federal State--Brazil, in the period between 1994 and 1996. It was observed that 73.8% of the deliveries were regular and 25.5% were cesareans. Adolescents, between 10 to 14 years old represented 5.4% of the total of the deliveries. In relation to the weight of the newly born, 84.6% met the expectations, 7.4% were underweight and 6.6% were overweight. The present study also found that the data related to weight, age and gender was ignored in many cases, which shows flaws on the registration system of the institutions analyzed. As a conclusion, we would like to stress the importance of prenatal assistance both for the mother and the child, and also the effort on the part of the Maternity and Nursing management regarding the production and analysis of data.
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Fandinho FC, Kritski AL, Hofer C, Júnior Conde H, Ferreira RM, Saad MH, Silva MG, Riley LW, Fonseca LS. RFLP patterns and risk factors for recent tuberculosis transmission among hospitalized tuberculosis patients in Rio de Janeiro, Brazil. Trans R Soc Trop Med Hyg 2000; 94:271-5. [PMID: 10974996 DOI: 10.1016/s0035-9203(00)90317-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Isolates of Mycobacterium tuberculosis from 120 tuberculosis patients seen in the 12 months ending September 1994 at 2 tertiary-care centres in Rio de Janeiro were characterized by IS6110 restriction fragment length polymorphism (RFLP) analysis. Ninety-seven patients (81%) had isolates with unique RFLP patterns, while 23 patients (19%) had isolates that belonged to 11 different RFLP cluster patterns. The strains from the latter patients were distributed among 1 group of 3 patients and 10 groups of 2 patients each. The cluster-pattern strains were not associated with gender, age, HIV infection, type of residence, living in shelter, homelessness or previous history of tuberculosis. However, clustering was strongly associated with multidrug resistance (P = 0.006). These data suggest that recent exogenous transmission may be important for the development of new cases of multidrug-resistant disease in patients attending tertiary-care centres in Rio de Janeiro, Brazil.
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Affiliation(s)
- F C Fandinho
- Laboratório de Tecnologia Recombinante, Instituto de Tecnologia em Imunobiológicos, Fiocruz, Rio de Janeiro, Brazil
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Abecasis MM, Machado AM, Boavida G, Silva MG, Lúcio P, Ambrósio A, Jorge ML. Haploidentical cord blood transplant contaminated with maternal T cells in a patient with advanced leukaemia. Bone Marrow Transplant 1996; 17:891-5. [PMID: 8733718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Myeloablative treatment followed by lymphohaematopoietic reconstitution with stem cells from umbilical cord blood (UCB) can cure children with leukaemia. The clinical experience of UCB transplantation with HLA 2- and 3-antigen mismatched siblings is rather limited and there are no reports of such patient being given UCB significantly contaminated with maternal T lymphocytes. In this study, we report our experience in treating a child with chronic myeloid leukaemia in blast crisis who was transplanted using UCB cells from mismatched sibling donor containing a significant number of maternal T cells. The patient received 1.17 x 10(8) nucleated cells/kg after conditioning with Ara-C, busulphan, TBI and cyclophosphamide. GVHD prophylaxis was with cyclosporine and an anti-CD25 monoclonal antibody. Although engraftment was somewhat slow it was complete as documented by cytogenetic analysis and DNA studies. Results of minimal residual disease monitoring by RT-PCR for the hybrid BCR/ABL gene showed no evidence of leukaemic mRNA post-transplant. Acute GVHD, skin only, developed on day +14 but promptly responded to low-dose steroids. The technique used for UCB collection may have cell contamination found. In spite of these potential disadvantages: advanced disease, HLA antigen disparate donor and significant maternal T cell contamination, the transplant was successful and at a follow-up of 14 months the child is well with no evidence of chronic GVHD. Immune naivety of cord blood and lack of immunological reactivity of maternal T cells in this context may have played a significant role in the outcome of this case.
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Affiliation(s)
- M M Abecasis
- Instituto Português de Oncologia de Francisco Gentil, Lisboa, Portugal
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Chilvarquer LW, dos Santos VI, Silva MG, Young RS, Jorgenson RJ, Arena JF. Orofacial manifestations of the Seckel syndrome. ASDC J Dent Child 1987; 54:129-31. [PMID: 3470330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Silva MG, Boyle MA, Finger S, Numan B, Bouzrara AA, Almli CR. Behavioral effects of large and small lesions of the rat medial frontal cortex. Exp Brain Res 1986; 65:176-81. [PMID: 3803503 DOI: 10.1007/bf00243840] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Rats with either sham operations, small medial frontal cortex lesions (SMF), or large medial frontal cortex lesions (LMF) were tested in the open field, for spatial alternation and for 8-arm maze learning. The behaviors of sham-operated and SMF rats were similar on the spatial learning tasks, while the LMF group performed poorly in relation to these two groups. In contrast, the two lesion groups differed from the sham group, but not from each other, on locomotor activity in the open field. The differences in performance between the SMF and LMF groups on the spatial learning measures suggest that medial frontal cortex lesion size and locus may be important factors underlying the variable results of previous studies evaluating spatially-oriented behaviors of rats with varying degrees of medial frontal cortex damage.
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