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Campos KR, Sacchi CT, Gonçalves CR, Pagnoca ÉVRG, Dias ADS, Fukasawa LO, Caterino-de-Araujo A. COVID-19 laboratory diagnosis: comparative analysis of different RNA extraction methods for SARS-CoV-2 detection by two amplification protocols. Rev Inst Med Trop Sao Paulo 2021; 63:e52. [PMID: 34190954 PMCID: PMC8231976 DOI: 10.1590/s1678-9946202163052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 06/01/2021] [Indexed: 11/21/2022] Open
Abstract
The gold standard for the laboratory diagnosis of COVID-19 is the reverse transcription quantitative real-time polymerase chain reaction (RT-qPCR) assay, which searches for SARS-CoV-2 target genes in nasopharyngeal/oropharyngeal (NP/OP) samples, and its performance depends on the quantity and quality of the RNA input. This study compared the performance and cost-effectiveness of three different kits/reagents for RNA extraction used in COVID-19 diagnosis in Sao Paulo, Brazil. A total of 300 NP/OP samples belonging to suspected cases of COVID-19 stored in a biorepository were randomly selected, and RNA was extracted using (i) automated extraction (Loccus, Extracta Kit FAST), (ii) manual extraction (BioGene Kit, Bioclin, Quibasa), and (iii) quick extraction methods (Lucigen, Quick DNA Extract Kit). Next, the samples were tested using RT-qPCR for SARS-CoV-2 with the Allplex 2019-nCoV modified assay and the Charité-Berlin protocol. All assays/kits were used according to the manufacturer's instructions. For the Allplex kit, the sensitivity in detecting SARS-CoV-2 with previously extracted RNA by different procedures was 100.0% for Loccus, 100.0% for BioGene and 91.9% for Quick. Using the Charité-Berlin protocol, the sensitivities were 81.4% for Loccus, 81.2% for BioGene and 60.7% for Quick. The least sensitive target gene and the gene most affected by RNA extraction procedures was the RNA-dependent RNA polymerase gene (Charité-Berlin protocol). No false-positive SARS-CoV-2 results were detected using RNA obtained from any of the different protocols. In conclusion, Loccus and BioGene RNA extractions were efficient for RT-qPCR assays, and although the BioGene procedure is less expensive, Loccus is the best choice because it allows the rapid handling of hundreds or thousands of samples, a desirable feature during pandemics. Although less sensitive, the Quick extraction is useful during outbreaks coupled with the Allplex amplification kit for SARS-CoV-2 diagnosis (κ = 0.925).
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Affiliation(s)
- Karoline Rodrigues Campos
- Instituto Adolfo Lutz, Centro de Respostas Rápidas, Laboratório
Estratégico, São Paulo, São Paulo, Brazil
| | - Cláudio Tavares Sacchi
- Instituto Adolfo Lutz, Centro de Respostas Rápidas, Laboratório
Estratégico, São Paulo, São Paulo, Brazil
| | - Cláudia Regina Gonçalves
- Instituto Adolfo Lutz, Centro de Respostas Rápidas, Laboratório
Estratégico, São Paulo, São Paulo, Brazil
| | | | - Alana dos Santos Dias
- Instituto Adolfo Lutz, Centro de Respostas Rápidas, Laboratório
Estratégico, São Paulo, São Paulo, Brazil
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Dos Santos CA, Cunha MPV, Bertani AMDJ, de Almeida EA, Gonçalves CR, Sacchi CT, de Paiva JB, Camargo CH, Tiba-Casas MR. Detection of multidrug- and colistin-resistant Salmonella Choleraesuis causing bloodstream infection. J Antimicrob Chemother 2021; 75:2009-2010. [PMID: 32155258 DOI: 10.1093/jac/dkaa076] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Guerra JM, Fernandes NCCDA, Morales Dos Santos AL, Barrel JDSP, Petri BSS, Milanelo L, Tiba-Casas MR, Liserre AM, Gonçalves CR, Sacchi CT, Catão-Dias JL, Camargo CH. Hypervirulent Klebsiella pneumoniae as Unexpected Cause of Fatal Outbreak in Captive Marmosets, Brazil. Emerg Infect Dis 2021; 26:3039-3043. [PMID: 33219810 PMCID: PMC7706955 DOI: 10.3201/eid2612.191562] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
After the sudden death of captive marmosets in São Paulo, Brazil, we conducted a histologic and microbiologic study. We found hyperacute septicemia caused by hypermucoviscous sequence type 86 K2 Klebsiella pneumoniae. We implemented prophylactic antimicrobial therapy, selected dedicated staff for marmoset interactions, and sanitized the animals’ fruit to successfully control this outbreak.
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Tiba-Casas MR, Sacchi CT, Gonçalves CR, Almeida EA, Soares FB, de Jesus Bertani AM, Fernandes SA, de Paula Eduardo MB, Camargo CH. Molecular analysis of clonally related Salmonella Typhi recovered from epidemiologically unrelated cases of typhoid fever, Brazil. Int J Infect Dis 2019; 81:191-195. [PMID: 30849581 DOI: 10.1016/j.ijid.2019.02.009] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 02/08/2019] [Accepted: 02/09/2019] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND The primary method of molecular subtyping for the identification and investigation of outbreaks has been pulsed-field gel electrophoresis (PFGE). In some cases, this technique has not been able to show discrimination between the unrelated strains that can be achieved by whole genome sequencing (WGS). METHODS The aim of this study was to determine the strengths and drawbacks of WGS using different analytic approaches compared to traditional typing method, PFGE, for retrospectively typing clusters cases of 28 S. Typhi. RESULTS We evaluated three analytical approaches on the WGS data set (Nucleotide Difference (ND), (SNPs) and Whole genome multi locus sequence typing (wgMLST) that identically classified the clusters-related strains into two clusters, cluster A (with strains from 2017), and Cluster B (with strains from 2007). CONCLUSIONS In this study WGS based typing, was able to compete with PFGE for differentiation of the clusters of S. Typhi strains.
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Luchs A, Madalosso G, Cilli A, Morillo SG, Martins SR, de Souza KAF, Namiyama GM, Gonçalves CR, Carmona RDCC, Timenetsky MDCST. Outbreak of G2P[4] rotavirus gastroenteritis in a retirement community, Brazil, 2015: An important public health risk? Geriatr Nurs 2017; 38:283-290. [DOI: 10.1016/j.gerinurse.2016.11.004] [Citation(s) in RCA: 5] [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: 08/25/2016] [Revised: 11/08/2016] [Accepted: 11/14/2016] [Indexed: 12/13/2022]
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Souza RQD, Gonçalves CR, Ikeda TI, Cruz ÁS, Graziano KU. O impacto do último enxágue na citotoxicidade de produtos críticos passíveis de processamento. Rev Esc Enferm USP 2015; 49 Spec No:87-92. [DOI: 10.1590/s0080-623420150000700013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 07/30/2015] [Indexed: 11/22/2022] Open
Abstract
RESUMO Objetivo Avaliar a citotoxicidade de produtos submetidos à contaminação desafio, limpeza baseada em procedimento operacional padrão (POP) validado e enxágue final em diferentes tipos de água: de torneira, deionizada, destilada, tratada por osmose reversa e ultrapurificada. Método Estudo experimental e laboratorial. Foram utilizadas como amostras 130 cânulas de hidrodissecção, 26 por grupo experimental, caracterizados, de acordo com a água utilizada no último enxágue. As amostras foram submetidas à contaminação desafio interna e externamente por uma solução contendo 20% sangue de carneiro desfibrinado e 80% de Cloreto de Sódio a 0,9%. Em seguida, tiveram o lúmen preenchido por solução viscoelástica, permanecendo em contato com o contaminante por 50 minutos, sendo então, processadas, de acordo com um POP validado. A citotoxicidade foi avaliada pela captura do corante vital vermelho neutro. Resultados Ausência de citotoxicidade nos extratos das amostras. Conclusão As amostras não demonstraram citotoxicidade, independentemente da qualidade de água utilizada no último enxágue. Os resultados apresentados puderam ser alcançados unicamente por meio do uso de um procedimento operacional padrão de limpeza validado, baseado em literatura científica, em recomendações oficiais e na legislação relacionada.
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Favarato MH, Mease P, Gonçalves CR, Gonçalves Saad C, Sampaio-Barros PD, Goldenstein-Schainberg C. Hypertension and diabetes significantly enhance the risk of cardiovascular disease in patients with psoriatic arthritis. Clin Exp Rheumatol 2014; 32:182-187. [PMID: 24480317] [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] [Received: 05/03/2013] [Accepted: 11/12/2013] [Indexed: 06/03/2023]
Abstract
OBJECTIVES New evidence has lightened the linkage between psoriatic arthritis (PsA) and the development of atherosclerosis and cardiovascular disease (CVD). We aimed to describe the prevalence of cardiovascular events and associated risk factors among patients with PsA. METHODS Retrospective evaluation of medical records from consecutive PsA patients who fulfilled the CASPAR criteria for PsA attending a specialised spondyloarthritis clinic at a single referral centre. CVD was defined based on the occurrence of coronary artery disease (CAD) or cerebrovascular ischaemic disease events. RESULTS We evaluated 158 PsA patients, 48.7% females and 51.3% males, aged 53.7±13.9 yrs. Mean PsA duration was 13.7±8.9 yrs and polyarticular subtype affected 66 (42%) patients. According to drug therapy, 85 (54%) were using NSAIDs and 21 (13%) low-dose prednisone; 32 (20%) were on anti-TNF agents, 94 (60%) metothrexate, 18 (11%) leflunomide, 13 (8%) sulfasalazine, 5 (3%) other immunossupressors and 4 (2.5%) were on chloroquine. Over half patients (87, 55%) had arterial hypertension (AH); 51 (32%) had dyslipidaemia (DLP), 38 (29%) hypertriglyceridemia and 36 (23%) diabetes mellitus (DM). Lipid profile was similar for both genders with mean total cholesterol= 186.5±38.6mg/dl, LDL=112.3±30.6 mg/dl, HDL= 47.89±14.6 and triglycerides= 127.4± 65.6 mg/dl. Of note, 14% PsA patients have had CVD, namely cerebrovascular or coronary heart disease. Sex, age, disease duration, joint involvement subtype, disease activity, CRP and lipid levels were similar among patients with and without CVD. The prevalence of AH (95% vs. 45%, p<0.001), DLP (75% vs. 27.7%, p<0.001) and DM (60% vs. 19%, p<0.001) were significantly greater in PsA patients who have had CVD compared to those without CVD, conferring an odds ratio of 21.0 for AH and of 5.4 for DM. CONCLUSIONS The high prevalence of CVD in PsA patients is influenced by increased AH and DM. Hence early recognition and specific treatment is mandatory in order to reduce the risk for CVD, avoiding early morbidity and mortality.
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Affiliation(s)
- M H Favarato
- Faculdade de Medicina da Universidade de São Paulo e Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Brazil.
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de Souza RQ, Graziano KU, Ikeda TI, Gonçalves CR, Cruz AS. [Cytotoxicity of PVC tubes sterilized in ethylene oxide after gamma radiation exposure]. Rev Esc Enferm USP 2013; 47:494-9. [PMID: 23743920 DOI: 10.1590/s0080-62342013000200031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Accepted: 10/16/2012] [Indexed: 11/22/2022] Open
Abstract
Do materials sterilized using gamma rays become toxic when re-sterilized in ethylene oxide? This question guided the objective of this study, which was to investigate the potential cytotoxic effect of PVC sterilized by gamma radiation and re-sterilized with EO by the agar diffusion method in cell cultures. Nine PVC tubes were subjected to gamma radiation sterilization and were re-sterilized in EO. The tubes were divided into a total of 81 units of analysis that were tested so as to represent the internal and external surfaces and mass of each tube. It was concluded that the PVC materials sterilized in gamma radiation and re-sterilized in EO are not cytotoxic.
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Affiliation(s)
- Rafael Queiroz de Souza
- Universidade de SãoPaulo. Bolsista do Conselho Nacional de Desenvolvimento Científico e Tecnológico, São Paulo, SP, Brasil.
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Skare TL, Leite N, Bortoluzzo AB, Gonçalves CR, da Silva JAB, Ximenes AC, Bértolo MB, Ribeiro SLE, Keiserman M, Menin R, Carneiro S, Azevedo VF, Vieira WP, Albuquerque EDN, Bianchi WA, Bonfiglioli R, Campanholo C, Carvalho HMS, Costa IP, Duarte AP, Gavi MBO, Kohem CL, Lima SAL, Meirelles ES, Pereira IA, Pinheiro MM, Polito E, Resende GG, Rocha FAC, Santiago MB, Sauma MDFLC, Sampaio-Barros PD. Effect of age at disease onset in the clinical profile of spondyloarthritis: a study of 1424 Brazilian patients. Clin Exp Rheumatol 2012; 30:351-357. [PMID: 22510473] [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] [Received: 05/02/2011] [Accepted: 10/25/2011] [Indexed: 05/31/2023]
Abstract
OBJECTIVES To analyse demographic and clinical variables in patients with disease onset before and after 40, 45 and 50 years in a large series of Brazilian SpA patients. METHODS A common protocol of investigation was prospectively applied to 1424 SpA patients in 29 centres distributed through the main geographical regions in Brazil. The mean age at disease onset was 28.56 ± 12.34 years, with 259 patients (18.2%) referring disease onset after 40 years, 151 (10.6%) after 45 years and 81 (5.8%) after 50 years. Clinical and demographic variables and disease indices (BASDAI, BASFI, BASRI, MASES, ASQoL) were investigated. Ankylosing spondylitis was the most frequent disease (66.3%), followed by psoriatic arthritis (18%), undifferentiated SpA (6.7%), reactive arthritis (5.5%), and enteropathic arthritis (3.5%). RESULTS Comparing the groups according to age of disease onset, those patients with later onset presented statistical association with female gender, peripheral arthritis, dactylitis, nail involvement and psoriasis, as well as negative statistical association with inflammatory low back pain, alternating buttock pain, radiographic sacroiliitis, hip involvement, positive familial history, HLA-B27 and uveitis. BASDAI, BASFI and quality of life, as well as physicians and patient's global assessment, were similar in all the groups. Radiographic indices showed worse results in the younger age groups. CONCLUSIONS There are two different clinical patterns in SpA defined by age at disease onset: one with predominance of axial symptoms in the group with disease onset ≤ 40 years and another favouring the peripheral manifestations in those with later disease onset.
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Affiliation(s)
- T L Skare
- Hospital Evangélico de Curitiba, Brazil.
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Caldas CAM, Borba EF, Bortolotto LA, Medeiros DM, Bonfa E, Gonçalves CR. Increased arterial stiffness assessed by pulse wave velocity in Behçet's disease and its association with the lipid profile. J Eur Acad Dermatol Venereol 2012; 27:454-9. [PMID: 22329367 DOI: 10.1111/j.1468-3083.2012.04458.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To evaluate the structural and functional properties of vessels in Behçet's Disease (BD) using carotid-femoral pulse wave velocity (PWV) and an echo-tracking system. METHODS BD patients without traditional cardiovascular risk factors were selected. All BD patients performed PWV and carotid ultrasound. BD patients were divided into groups based on the presence of systemic (vascular and/or ocular and/or central nervous system involvement) and vascular involvement. Healthy controls age- and sex-matched with the same exclusion criteria were selected. RESULTS A total of 23 BD patients (mean age 35.0 ± 7.6 years) had significantly higher PWV levels compared with controls (8.48 ± 1.14 vs. 7.53 ± 1.40 m/s, P = 0.017). Intima-media thickness (594.87 ± 138.61 vs. 561.08 ± 134.26 μm, P = 0.371), diastolic diameter (6383.78 ± 960.49 vs. 6447.65 ± 1159.73 μm, P = 0.840), distension (401.95 ± 117.72 vs. 337.91 ± 175.36 μm, P = 0.225) and relative distension (6.26 ± 2.83 vs. 5.42 ± 2.46 μm, P = 0.293) were similar in both groups. The systemic disease group had significantly higher levels of PWV (8.79 ± 1.21 vs. 7.88 ± 0.72 m/s, P = 0.036) compared to those with exclusive mucocutaneous manifestations. BD patients with vascular involvement had similar PWV and echo-tracking parameters compared to those without vascular involvement (P > 0.05), but had higher total and LDL cholesterol levels (P = 0.019 and P = 0.012, respectively). The multivariate linear regression analysis identified triglycerides as the most important factor in increasing PWV levels (P = 0.001) in BD. CONCLUSIONS PWV is more useful than carotid ultrasound in detecting structural and functional vascular damage in BD and emphasizes the role of the disease itself in promoting these alterations. Our findings also reinforce the need for rigorous control of all risk factors in BD, particularly lipoproteins.
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Affiliation(s)
- C A M Caldas
- Rheumatology Division, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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Neves FS, Moraes JCB, Kowalski SC, Goldenstein-Schainberg C, Lage LV, Gonçalves CR. Cross-cultural adaptation of the Behçet's Disease Current Activity Form (BDCAF) to Brazilian Portuguese language. Clin Rheumatol 2006; 26:1263-7. [PMID: 17180637 DOI: 10.1007/s10067-006-0484-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2006] [Revised: 10/29/2006] [Accepted: 11/07/2006] [Indexed: 12/01/2022]
Abstract
The Behçet's Disease Current Activity Form (BDCAF) is a clinical instrument used to assess the activity of Behçet's disease (BD), which was originally developed in English. The aim of the present study was to perform a cross-cultural adaptation of the BDCAF to Brazilian Portuguese language and to evaluate its reliability in a population of Brazilian patients with BD. Brazilian Portuguese version of the BDCAF, named BR-BDCAF, was obtained according to established guidelines. Forty Brazilian patients with BD diagnosed according to the International Study Group for Behçet's Disease criteria were assessed by two rheumatologists in independent sessions and submitted to the BR-BDCAF. Inter- and intraobserver agreement were then evaluated by kappa scores (values higher than 0.6 indicated good agreement). Good inter- and intraobserver agreements were achieved for the most common manifestations of BD: kappa scores higher than 0.6 were obtained for oral and genital ulcerations, skin lesions, and articular and general complaints. Moderate interobserver agreement was obtained for ocular activity (kappa 0.483) and fair interobserver agreement was obtained for gastrointestinal (kappa 0.322), major vessel (kappa 0.281), and central nervous system activity (kappa 0.304). BR-BDCAF was found to be a reliable instrument for the classic mucocutaneous and articular manifestations of BD and for general complaints, but complementary assessment is needed to evaluate specific visceral involvement for disease activity.
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Affiliation(s)
- F S Neves
- Rheumatology Division, Faculty of Medicine, University of São Paulo, Av. Dr. Arnaldo 455, 3o andar, sala 3133, Pacaembu, São Paulo-SP, CEP 01246-903, Brazil.
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Shinzato MM, Bueno C, Trindade Viana VS, Borba EF, Gonçalves CR, Bonfá E. Complement-fixing activity of anticardiolipin antibodies in patients with and without thrombosis. Lupus 2006; 14:953-8. [PMID: 16425575 DOI: 10.1191/0961203305lu2252oa] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We have analysed in vitro the complement-fixing activity of anticardiolipin antibodies (C-fix aCL) from patients with persistent and moderate/high titres IgG aCL antibodies: 21 with thrombosis and 11 without thrombosis. Titre and C-fix ability of aCL were measured by ELISA. APS and non-APS patients were similar with regard to mean levels of IgG aCL (46 +/- 24 versus 51 +/- 30 GPL, P = 0.7), frequency of IgM aCL (P = 0.7) and a comparable predominance of IgG2 aCL reactivity on ELISA (95% versus 100%, respectively, P = 1.0). Remarkably, a high frequency of C-fix aCL (71% versus 92%, P = 0.35) was observed in both groups. Similarly, no difference was observed in the mean level of C-fix aCL in APS and non-APS patients (7 +/- 6 versus 9 +/- 8 SDunits, P = 0.3). Analysis of 10 primary and 11 secondary APS also revealed a comparable IgG aCL mean titre (57 +/- 29 versus 37 +/- 11, P = 0.06), frequency of IgM aCL (P = 0.6) and of C-fix aCL (70% versus 73%, P = 0.99). Among APS patients six had exclusive arterial events and seven exclusive venous events. The IgG aCL mean titre (36 +/- 10 versus 36 +/- 11 GPL, P = 0.9) and the frequency of IgM aCL antibodies (P = 0.56) in these subgroups of patients were comparable. There was a trend of higher frequency of C-fix aCL in patients with exclusive venous events (100%) compared to 50% of those with exclusive arterial events (p = 0.07). Importantly, C-fix aCL titre was higher in the former group compared to the later one (8 +/- 5 SDunits versus 2 +/- 2 SDunits, P = 0.016). Our data support the notion of a high frequency of C-fix aCL in APS. Although it does not discriminate those patients without thrombotic events with persistent moderate/high levels of aCL, this property seems to be more relevant in venous events and may provide the basis for further understanding the distinct pathogenic mechanisms underlying arterial and venous occlusive disorders of APS.
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Affiliation(s)
- M M Shinzato
- Division of Rheumatology, University of São Paulo, Brazil.
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Sampaio-Barros PD, Carvalho MAP, Azevedo VF, Campos WR, Carneiro SCS, Giorgi RDN, Gonçalves CR, Hilário MOE, Keiserman MW, Leite NH, Pereira IA, Vieira WP, Vilela EG, Xavier RM, Ximenes AC. Espondiloartropatias: outras artropatias. Rev Bras Reumatol 2004. [DOI: 10.1590/s0482-50042004000600013] [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: 11/21/2022] Open
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Sampaio-Barros PD, Carvalho MAP, Azevedo VF, Campos WR, Carneiro SCS, Giorgi RDN, Gonçalves CR, Hilário MOE, Keiserman MW, Leite NH, Pereira IA, Vieira WP, Vilela EG, Xavier RM, Ximenes AC. Espondiloartropatias: espondilite anquilosante e artrite psoriásica. Rev Bras Reumatol 2004. [DOI: 10.1590/s0482-50042004000600012] [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: 11/22/2022] Open
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Gonçalves CR, Antonini S, Vianna-Morgante AM, Machado-Santelli GM, Bevilacqua E. Developmental changes in the ploidy of mouse implanting trophoblast cells in vitro. Histochem Cell Biol 2003; 119:189-98. [PMID: 12649733 DOI: 10.1007/s00418-003-0500-0] [Citation(s) in RCA: 16] [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] [Accepted: 01/13/2003] [Indexed: 10/25/2022]
Abstract
Shortly after the onset of implantation, polar mouse trophoblast cells proliferate and give rise to the ectoplacental cone, constituted by two distinct cell populations: undifferentiated, diploid cells and giant cells. Giant cells characteristically exhibit exaggerated dimensions and polyploid nuclei. In this study, we employ ectoplacental cones as a dynamic source of trophoblast giant cells to analyze cell proliferation, cell death, and ploidy under in vitro conditions. Our results show that DNA synthesis and the increase in the cell number are relevant only during the first 24 h of culture. Subsequently, DNA synthesis still occurs, mainly in the giant cell compartment, while the number of cells gradually decreases. Cell death by injury and apoptosis was also observed in the non-giant cell compartment of the ectoplacental cone. These findings suggest that the first 24 h of culture are crucial to the mitotic activity of the ectoplacental cone cells that gradually ceases, favoring the endoreduplication process. The DNA synthesis index during the subsequent experimental intervals emphasizes accumulation of DNA for the polyploidization. There was clear correlation between DNA content and nuclear dimension. The ploidy values for the trophoblast giant cells varied from 2C up to 368C in the giant cells, but were not as expressive as those known from in vivo conditions, probably due to the absence of regulatory factors specific to the embryonic-maternal interface. In situ hybridization and histochemistry for the nucleolus-organizing region showed that trophoblast nuclei have only two marker signals, indicative of a typical polytenic process. This present study elucidates important aspects of trophoblast behavior and provides new information on trophoblast physiology in vivo and in vitro.
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Affiliation(s)
- Cláudia Regina Gonçalves
- Department of Histology and Embryology, Institute of Biomedical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 1524, 05508-900 SP, São Paulo, Brazil
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Irino K, Dias AM, Kano E, Vaz TM, Kato MA, Gonçalves CR, Vieira MA, Gomes TA. Metabolism of phenylpropionic acid in enteropathogenic Escherichia coli belonging to serogroup O111 and its application for diagnosis. FEMS Microbiol Lett 2001; 204:105-10. [PMID: 11682187 DOI: 10.1111/j.1574-6968.2001.tb10871.x] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
We evaluated a biochemical assay based on the ability to metabolise beta-phenylpropionic acid (PPA) as a diagnostic aid in the identification of typical enteropathogenic Escherichia coli (EPEC) strains. A total of 1061 E. coli strains of serogroups O55, O111, and O119 were initially characterised regarding their H types (serotypes) and the presence of EPEC DNA sequences, eae, EAF, and bfpA. In case of the serogroup O111 strains, 84.6% carried the typical EPEC markers, and the great majority of those (98.1%) were PPA-positive. In contrast, only 0.9% of the serogroups O55 and O119 strains carrying the typical EPEC markers (53.6% and 75.4%, respectively) were PPA-positive. We conclude that the PPA test is a useful method to detect typical EPEC strains only among strains of the O111 serogroup.
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Affiliation(s)
- K Irino
- Seção de Bacteriologia, Institute Adolpho Lutz, Av Dr Arnaldo, 351, CEP 01246-902, São Paulo, Brazil.
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19
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Gonçalves CR, Vaz TM, Araujo E, Boni RD, Leite D, Irino K. Biotyping, serotyping and ribotyping as epidemiological tools in the evaluation of Acinetobacter baumannii dissemination in hospital units, Sorocaba, São Paulo, Brazil. Rev Inst Med Trop Sao Paulo 2000; 42:277-82. [PMID: 11058938 DOI: 10.1590/s0036-46652000000500007] [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: 11/22/2022] Open
Abstract
Dissemination of Acinetobacter baumannii strains in different units of a hospital in Sorocaba, São Paulo, Brazil was evaluated over a period of two years. By using biotyping, serotyping and ribotyping, 27 distinct clones were differentiated among 76 strains isolated between 1993-94, from clinical specimens of hospitalized patients. Two clones, 2:O4:A (biotype:serotype:ribotype) and 2:O29:A accounted for the majority of strains widely disseminated in the units during 1993. The introduction in the hospital setting, of a new clone, 6:O13:B, at the end of 1993 and its predominance through 1994 is discussed. Among 15 strains isolated from neonates, 6 (40%) belonged to the same clone, 2:O4:A. Interestingly, this clone was almost all recovered in neonatal intensive care unit, nursery and in pediatric unit. All strains were susceptible to imipenem and polymyxcin B. Multiresistant strains (up to 12 antimicrobial agents) accounted for 66.7% and 84.8% of the strains isolated in 1993 and in 1994, respectively.
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Affiliation(s)
- C R Gonçalves
- Seção de Bacteriologia, Instituto Adolfo Lutz, São Paulo, SP, Brazil.
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20
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Montenegro V, Chiamolera M, Launay P, Gonçalves CR, Monteiro RC. Impaired expression of IgA Fc receptors (CD89) by blood phagocytic cells in ankylosing spondylitis. J Rheumatol 2000; 27:411-7. [PMID: 10685807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
OBJECTIVE Expression of IgA Fc receptors (CD89, FcalphaR) and their occupancy by endogenous IgA were studied on blood monocytes and neutrophits to determine if FcalphaR defects could account for enhanced serum IgA and IgA-IC commonly found in patients with ankylosing spondylitis (AS). METHODS Peripheral blood samples were obtained from 34 patients with AS, 15 patients with rheumatoid arthritis, and 34 healthy individuals. Cell surface FcalphaR was analyzed using a quantitative flow cytometry method in which blood cells were stained with anti-FcalphaR monoclonal antibodies recognizing epitopes outside the IgA binding site and with F(ab')2 fragments of anti-IgA antibodies. Modulation of cell surface FcalphaR was evaluated after incubation of blood cells at 37 degrees C in absence of plasma. Biochemical characterization of iodinated FcalphaR molecules was determined by immunoprecipitation and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). RESULTS FcaR expression was significantly decreased on monocytes and neutrophils in patients with AS compared to control groups. FcalphaR levels were inversely correlated with serum IgA, suggesting its negative regulatory role. Modulation experiments resulted in rapid and higher FcalphaR upregulation in AS than in controls, indicating that these molecules were downregulated only at the cell surface. Moreover, analysis of the surface iodinated FcalphaR molecules by SDS-PAGE revealed higher Mr (60-90 kDa) in AS than controls (55-75 kDa), also suggesting an altered glycosylation. Analysis of receptor occupancy revealed high levels of endogenous IgA bound to monocytes and neutrophils in patients with AS, pointing to a saturation of IgA Fc receptors. CONCLUSION We observed impaired expression of FcalphaR in patients with AS that is characterized by a downregulation process associated with post-translational alterations and enhanced binding of endogenous IgA. These alterations might lead to a defective blood clearance by FcalphaR resulting in the enhancement of IgA and IgA-IC in AS patients. Decreased FcalphaR expression represents a new marker for this disease.
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Affiliation(s)
- V Montenegro
- Division of Rheumatology, University of São Paulo, Brazil.
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21
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Gonçalves CR, Vaz TM, Leite D, Pisani B, Simoes M, Prandi MA, Rocha MM, Cesar PC, Trabasso P, von Nowakonski A, Irino K. Molecular epidemiology of a nosocomial outbreak due to Enterobacter cloacae and Enterobacter agglomerans in Campinas, São Paulo, Brazil. Rev Inst Med Trop Sao Paulo 2000; 42:1-7. [PMID: 10742720 DOI: 10.1590/s0036-46652000000100001] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A total of 73 isolates (57 Enterobacter cloacae and 16 Enterobacter agglomerans), recovered during an outbreak of bacteremia in the Campinas area, São Paulo, Brazil, were studied. Of these isolates, 61 were from parenteral nutrition solutions, 9 from blood cultures, 2 from a sealed bottle of parenteral nutrition solution, and one was of unknown origin. Of the 57 E. cloacae isolates, 54 were biotype 26, two were biotype 66 and one was non-typable. Of 39 E. cloacae isolates submitted to ribotyping, 87.2% showed the same banding pattern after cleavage with EcoRI and BamHI. No important differences were observed in the antimicrobial susceptibility patterns among E. cloacae isolates exhibiting the same biotype, serotype and ribotype. All E. agglomerans isolates, irrespective of their origin, showed same patterns when cleaved with EcoRI and BamHI. The results of this investigation suggest an intrinsic contamination of parenteral nutrition solutions and incriminate these products as a vehicle of infection in this outbreak.
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22
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Pereira IA, Pereira RM, Borba EF, Gonçalves CR, Yoshinari NY, Cossermelli W. [Low complement levels in urticarial vasculitis as first manifestation of systemic lupus erythematosus]. Rev Assoc Med Bras (1992) 1997; 43:311-3. [PMID: 9595743 DOI: 10.1590/s0104-42301997000400006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 02/07/2023] Open
Abstract
Hypocomplementaemic urticarial vasculitis syndrome is a leukocytoclastic vasculitis characterized by urticarial lesions, associated with fever, arthralgias, arthritis and abdominal pain. Other systemic manifestations include glomerulonephritis, uveitis, episcleritis, chronic obstructive pulmonary disease and neurological abnormalities. Some case associated with systemic lupus erythematosus have been described and SLE diagnosis was made by previous or concomitant diagnostic criteria before onset of urticarial vasculitis. Urticarial vasculitis prior to SLE diagnosis is rare. The development of anti-Ro/SS-A antibody for the diagnosis of SLE is emphasized. The authors alert to the importance of periodically searching for this marker in patients with urticarial vasculitis.
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Affiliation(s)
- I A Pereira
- Disciplina de Reumatologia do Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo
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23
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Salamea-Palacios FA, Laurindo IM, Torigoe DY, Gonçalves CR, Yoshinari NH. [Aminotransferase levels in rheumatoid arthritis patients treated with methotrexate]. Rev Hosp Clin Fac Med Sao Paulo 1997; 52:51-4. [PMID: 9435395] [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: 02/05/2023]
Abstract
Increase of the aminotransferase levels in 53 patients treated with methotrexate (MTX) were analysed in a retrospective study. The mean dose of MTX was 7.46 mg/week (range 2.5-15 mg) during at least 30 weeks (mean time of MTX use 124 weeks). The aminotransferase levels were transitorily increased in 13 patients, always less than three times the upper limit of normal. Only in three patients the AST and ALT levels were persistently increased and lead to the drug discontinuation in two cases. These results showed that increase of aminotransferases was a frequent observation (24.5%) during the first two-three years of follow-up, without interference in the overall clinical management.
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Oliveira MG, Irino K, Vaz TM, Gonçalves CR, Levy CE. Biotypes, serovars and antimicrobial resistance patterns of Acinetobacter baumannii clinical isolates. Zentralbl Bakteriol 1996; 284:550-8. [PMID: 8899973 DOI: 10.1016/s0934-8840(96)80006-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
255 Acinetobacter strains, from clinical specimens of inpatients and outpatients, were identified phenotypically according to the new taxonomy proposed by Bouvet and Grimont. A. baumannii was the most frequent species (80.8%). This species underwent biotyping and serotyping according to the scheme of Bouvet and Grimont, and that of Traub, respectively, 81.2% of samples belonged to biotypes 2, 6 and 9 with a predominance of biotype 2. 86.6% of the strains could be serotyped; 2 new serotypes were encountered. The new serotype 29, being the most frequently isolated, was related to biotype 2 (86.6%), whereas serotype 13 was related to biotype 6 (84.8%). These clones presented marked multiple resistance patterns and were widespread in different wards. No outbreak was reported during the period studied. These phenotypical methods proved to be useful in differentiating strains of A. baumannii and, if used together, they showed a high discriminatory power.
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Affiliation(s)
- M G Oliveira
- Department of Microbiology, Universidade Federal de Juiz de Fora, Minas Gerais, Brazil
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25
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Heyman RE, Ferraz MB, Gonçalves CR, Atra E. Evaluation of the International Study Group for Behçet's Disease Criteria in Brazilian patients. Clin Rheumatol 1995; 14:526-30. [PMID: 8549090 DOI: 10.1007/bf02208149] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- R E Heyman
- Department of Medicine, Escola Paulista de Medicina, São Paulo, Brazil
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26
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Pereira IA, Pereira RM, Borba EF, Gonçalves CR, Yoshinari NH, Cossermelli W. [Primary erythromelalgia]. Rev Assoc Med Bras (1992) 1992; 38:228-30. [PMID: 1340383] [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: 12/26/2022] Open
Abstract
Erythromelalgia is a rare disease characterized by intense erythema, burning pain and increased temperature in the distal of the extremities. Primary forms and secondary forms have been described, most commonly with essential thrombocythemia and policythemia vera. The authors describe a fifteen year old patient with primary erythromelalgia and discuss the pathogenic, clinical and therapeutic features of this disease.
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Affiliation(s)
- I A Pereira
- Disciplina de Reumatologia do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo
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27
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Rodrigues CJ, Laurindo IM, Marchiori PE, Gonçalves CR. [Percutaneous synovial biopsy in the diagnostic evaluation of the patient with rheumatic disease]. Rev Hosp Clin Fac Med Sao Paulo 1989; 44:156-9. [PMID: 2623407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Forty seven percutaneous synovial biopsies from 22 patients with rheumatoid arthritis, four of whom with the juvenile form, 13 with indetermined polyarthritis and 12 with monoarthritis, were evaluated. The histopathological examination confirmed the clinical diagnosis in 76% of cases with rheumatoide arthritis and juvenile rheumatoid arthritis, and it suggested the diagnosis of rheumatoid arthritis in 80% of cases with indetermined polyarthritis. In two cases of monoarthritis it reveled acid-fast bacilli, and a granulomatous process in one. These resuls suggest that the synovial biopsies can be useful for the establishment of diagnosis in patients suffering from indetermined poly or monoarthritis.
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28
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Pereira RM, Gonçalves CR, Bueno C, Meirelles EDS, Cossermelli W, de Oliveira RM. Anticardiolipin antibodies in Behçet's syndrome: a predictor of a more severe disease. Clin Rheumatol 1989; 8:289-91. [PMID: 2758775 DOI: 10.1007/bf02030089] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A high incidence of anticardiolipin antibodies were detected in 7 of 20 patients (35%) with Behçet's Syndrome. Three patients had IgG-ab, three had IgM-ab and one had both IgG and IgM antibodies. IgG-ACA was detected mainly in patients with ocular disease (30%) and one of them also has cerebral vascular disease. A lower incidence of ACA was found in the patients taking steroids compared with the ones taking other drugs. This work draws attention to the more severe disease present in patients with ACA and also the possibility of such tests become negative in patients taking immunosuppressive drugs.
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Affiliation(s)
- R M Pereira
- Department of Rheumatology, University of São Paulo School of Medicine, Brasil
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29
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Santiago MB, Maeda LC, Gonçalves CR, Baltazar PA, Carvalho C, Takagaki T. [Myositis and toxoplasmosis]. Rev Hosp Clin Fac Med Sao Paulo 1988; 43:121-3. [PMID: 3247556] [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: 01/04/2023]
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30
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Hirata MT, Scaff M, Marchiori PE, Gonçalves CR. [Pseudotumor cerebri in Behçet's syndrome: report of a case]. Arq Neuropsiquiatr 1987; 45:193-6. [PMID: 3426426 DOI: 10.1590/s0004-282x1987000200013] [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: 01/05/2023]
Abstract
The authors describe one patient with Behçet's disease who had pseudotumor cerebri as a neurological manifestation. The possibility of pseudotumor cerebri due cerebral venous thrombosis in Behçet's disease is emphasized.
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Affiliation(s)
- M T Hirata
- Departamento de Neurologia da Faculdade de Medicina, Universidade de São Paulo
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31
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Gonçalves CR, Campos FP, Mendonça LL, Santiago M, Diament J, Cossermelli W. [Clinical and therapeutic study of 13 cases of gonococcal arthritis]. Rev Hosp Clin Fac Med Sao Paulo 1986; 41:282-5. [PMID: 3110905] [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: 01/04/2023]
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32
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Fuller R, Gonçalves CR, Mendonça Neto EC, Thomazini ME, Nobre MR. [Aneurysm of the pulmonary artery in Behçet's syndrome. Report of a case]. Rev Hosp Clin Fac Med Sao Paulo 1986; 41:127-31. [PMID: 3563301] [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: 01/06/2023]
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33
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Missi SM, de Almeida Neto E, Schaf S, Gonçalves CR, Rodrigues CJ, Margarido LC. [Specific arthritis in patients with leprosy]. Rev Hosp Clin Fac Med Sao Paulo 1985; 40:22-6. [PMID: 4059781] [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: 01/08/2023]
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