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Oliveira MC, Ferreira-Silva C, Silva RJ, Almeida WO, França FGR, Lourenço-de-Moraes R. First record of Sebekia oxycephala (Pentastomida: Sebekidae) infecting Helicops angulatus (Reptilia: Colubridae) in Northeast Brazil. BRAZ J BIOL 2023; 83:e275302. [PMID: 38018524 DOI: 10.1590/1519-6984.275302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 10/23/2023] [Indexed: 11/30/2023] Open
Abstract
In this study, we investigated the infection by pulmonary parasites in the water snake Helicops angulatus. We found four nymphs of the pentastomide parasite Sebekia oxycephala, parasitizing two adult females H. angulatus collected in the municipality of Rio Tinto, Paraíba, Brazil. This occurrence is likely due to the nymphs of this parasite directly infecting aquatic intermediate hosts, such as fish. The result of this study represents the first record of pentastomid infecting H. angulatus.
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Affiliation(s)
- M C Oliveira
- Universidade Federal da Paraíba - UFPB, Departamento de Engenharia e Meio Ambiente, Laboratório de Ecologia Aninal, Programa de Pós-graduação em Ecologia e Monitoramento Ambiental, Rio Tinto, PB, Brasil
| | - C Ferreira-Silva
- Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Instituto de Biociências, Setor de Parasitologia, Laboratório de Parasitologia de Animais Silvestres, Campus de Botucatu, Botucatu, SP, Brasil
| | - R J Silva
- Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Instituto de Biociências, Setor de Parasitologia, Laboratório de Parasitologia de Animais Silvestres, Campus de Botucatu, Botucatu, SP, Brasil
| | - W O Almeida
- Universidade Regional do Cariri - URCA, Departamento de Química Biológica, Programa de Pós-graduação em Diversidade Biológica e Recursos Naturais, Crato, CE, Brasil
| | - F G R França
- Universidade Federal da Paraíba - UFPB, Departamento de Engenharia e Meio Ambiente, Laboratório de Ecologia Aninal, Programa de Pós-graduação em Ecologia e Monitoramento Ambiental, Rio Tinto, PB, Brasil
| | - R Lourenço-de-Moraes
- Universidade Federal da Paraíba - UFPB, Departamento de Engenharia e Meio Ambiente, Laboratório de Ecologia Aninal, Programa de Pós-graduação em Ecologia e Monitoramento Ambiental, Rio Tinto, PB, Brasil
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Cacemiro MC, Cominal JG, Almeida FC, Oliveira MC, Sorgi CA, Figueiredo-Pontes LL, Faccioli LH, Gardinassi LG, Castro FA. METABOLIC PROFILE OF BONE MARROW PLASMA IN MYELOPROLIFERATIVE NEOPLASMS. Hematol Transfus Cell Ther 2021. [DOI: 10.1016/j.htct.2021.10.234] [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: 10/20/2022] Open
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3
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Dutra LRDV, Silva-Filho E, Oliveira MC, Paiva Tavares BN, Pegado R, Micussi MTBAC. Transcranial direct current electrical stimulation for the treatment of interstitial cystitis: A study protocol. Eur J Obstet Gynecol Reprod Biol 2021; 262:198-202. [PMID: 34062307 DOI: 10.1016/j.ejogrb.2021.05.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 05/19/2021] [Accepted: 05/20/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Interstitial cystitis or painful bladder syndrome is a chronic disorder that presents an unknown etiology, with no generally accepted treatment. Although there is no gold standard treatment, transcranial direct current stimulation (tDCS) has shown efficacy in several chronic pain syndromes with decrease in pain, and improved functionality and mood. tDCS could be a safe, ease to use, and low-cost complementary intervention for patients with interstitial cystitis. AIM This study will investigate the effects of a tDCS protocol on pain, functionality, and mood in patients with interstitial cystitis. METHODS A randomized controlled clinical trial with two arms. Women will be randomized into two groups: active or sham. Anodal tDCS over the primary motor cortex will be performed for 5 consecutive days with an intensity of 2 mA for 20 min. Participants will be evaluated five times: 1 week before intervention; on the 5th day of tDCS; and 1, 6, and 12 months after the last day of tDCS. The outcomes will be assessed using the numeric rating scale, McGill pain questionnaire, positive and negative affect scale, international consultation on incontinence questionnaire for female lower urinary tract symptoms, Hamilton anxiety scale, six-minute walk test, patient global impression of change, and voiding diary. DISCUSSION Only the active group will be expected to show decreased pain. The results of this trial will be the first step in the use of neuromodulation in interstitial cystitis and will provide additional data to support new studies with tDCS.
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Affiliation(s)
| | - Edson Silva-Filho
- Graduate Program in Rehabilitation Science, Federal University of Rio Grande do Norte, Rio Grande do Norte, Brazil.
| | - Maiara Costa Oliveira
- Undergraduate in Physiotherapy, Federal University of Rio Grande do Norte, Rio Grande do Norte, Brazil
| | | | - Rodrigo Pegado
- Graduate Program in Rehabilitation Science, Federal University of Rio Grande do Norte, Rio Grande do Norte, Brazil; Graduate Program in Health Science, Federal University of Rio Grande do Norte, Rio Grande do Norte, Brazil
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4
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Veloso CC, Oliveira MC, Rodrigues VG, Oliveira CC, Duarte LP, Teixeira MM, Ferreira AVM, Perez AC. Evaluation of the effects of extracts of Maytenus imbricata (Celastraceae) on the treatment of inflammatory and metabolic dysfunction induced by high-refined carbohydrate diet. Inflammopharmacology 2018; 27:539-548. [PMID: 29855750 DOI: 10.1007/s10787-018-0496-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 05/17/2018] [Indexed: 01/14/2023]
Abstract
The Maytenus genus is a member of the Celastraceae family. Numerous medicinal uses were assigned to species of this genus, with the use of roots, bark, and leaves for the treatment of gastric ulcers, as anti-inflammatory, analgesic, antiallergic, antitumor, among others. Several studies have demonstrated that natural products derived from plants have an important role in the prevention and treatment of obesity. Accordingly, we evaluated the effect of Maytenus imbricata extracts in the treatment of obesity induced by diet rich in refined carbohydrate (HC). BALB/c mice were fed chow or HC diet for 8 weeks. At the beginning of the 9th week, the HC group was subdivided into three groups: (i) group of animals that continued to consume only HC diet; (ii) the group of animals fed HC diet supplemented with ethyl acetate extract of M. imbricata roots (HC + EAE); (iii) the group of animals fed HC diet supplemented with extract in hexane/ethyl ether (HC + HEE). The period of extracts supplementation was 4 weeks. It was observed that EAE and EHE when added to the HC diet modulated the metabolic and inflammatory changes, such as: reduced the adipocytes area, improved glucose intolerance, reduced the levels of triglycerides and resistin in serum, and the number of total leukocytes in blood. In the epididymal adipose tissue, the extracts reduced proinflammatory mediators' concentration. According to the results, it was concluded that the species Maytenus imbricata has the potential to be used for the treatment of obesity.
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Affiliation(s)
- C C Veloso
- Pharmaceutical Sciences Faculty, Federal University of Amazonas (UFAM), Manaus, Amazonas, Brazil. .,Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas (UFAM), Av. General Rodrigo Octávio Jordão Ramos, 3000, Coroado I, Manaus, Amazonas, 69.077-000, Brazil.
| | - M C Oliveira
- Department of Nutrition, Nursing School, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil.,Imunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - V G Rodrigues
- Department of Chemistry, Institute of Exact Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - C C Oliveira
- Department of Pharmacology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - L P Duarte
- Department of Chemistry, Institute of Exact Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - M M Teixeira
- Imunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - A V M Ferreira
- Department of Nutrition, Nursing School, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil.,Imunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
| | - A C Perez
- Department of Pharmacology, Institute of Biological Sciences, UFMG, Belo Horizonte, Minas Gerais, Brazil
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5
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Mendes GA, Haag T, Trott G, Rech CGSL, Ferreira NP, Oliveira MC, Kohek MB, Pereira-Lima JFS. Expression of E-cadherin, Slug and NCAM and its relationship to tumor invasiveness in patients with acromegaly. ACTA ACUST UNITED AC 2017; 51:e6808. [PMID: 29267504 PMCID: PMC5731331 DOI: 10.1590/1414-431x20176808] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 09/19/2017] [Indexed: 01/08/2023]
Abstract
Pituitary adenomas account for 10–15% of primary intracranial tumors. Growth hormone (GH)-secreting adenomas account for 13% of all pituitary adenomas and cause acromegaly. These tumors can be aggressive, invade surrounding structures and are highly recurrent. The objective of this study was to evaluate E-cadherin, Slug and neural cell adhesion molecule (NCAM) expression in GH-secreting pituitary adenomas and its relationship to tumor invasiveness. A cross–sectional study of patients who underwent hypophysectomy due to GH-secreting pituitary adenoma from April 2007 to December 2014 was carried out. The medical records were reviewed to collect clinical data. Immediately after surgery, tumor samples were frozen in liquid nitrogen and stored in a biofreezer at –80°C for assessment of E-cadherin 1 (CDH1), SLUG (SNAI2), and NCAM (NCAM1) by real-time PCR. The samples were fixed in formalin and embedded in paraffin for immunohistochemical analysis of E-cadherin and NCAM. Thirty-five patients with acromegaly were included in the study. Of these, 65.7% had invasive tumors. Immunohistochemically, E-cadherin was expressed in 96.7% of patients, and NCAM in 80% of patients. There was no statistically significant relationship between tumor grade or invasiveness and immunohistochemical expression of these markers. Regarding gene expression, 50% of cases expressed CDH1, none expressed SNAI2, and 53.3% expressed NCAM1. There was no statistically significant relationship between tumor grade or invasiveness and gene expression of CDH1, SNAI2, and NCAM1. The absence of Slug overexpression and of E-cadherin and NCAM suppression suggests that expression of these markers is not associated with tumor invasiveness in GH-secreting pituitary adenomas.
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Affiliation(s)
- G A Mendes
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - T Haag
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - G Trott
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - C G S L Rech
- Centro de Neuroendocrinologia, Santa Casa de Porto Alegre, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - N P Ferreira
- Centro de Neuroendocrinologia, Santa Casa de Porto Alegre, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - M C Oliveira
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil.,Centro de Neuroendocrinologia, Santa Casa de Porto Alegre, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - M B Kohek
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - J F S Pereira-Lima
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil.,Centro de Neuroendocrinologia, Santa Casa de Porto Alegre, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
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de Oliveira GLV, Ferreira AF, Gasparotto EPL, Kashima S, Covas DT, Guerreiro CT, Brum DG, Barreira AA, Voltarelli JC, Simões BP, Oliveira MC, de Castro FA, Malmegrim KCR. Defective expression of apoptosis-related molecules in multiple sclerosis patients is normalized early after autologous haematopoietic stem cell transplantation. Clin Exp Immunol 2016; 187:383-398. [PMID: 28008595 DOI: 10.1111/cei.12895] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Revised: 10/23/2016] [Accepted: 11/02/2016] [Indexed: 12/14/2022] Open
Abstract
Defective apoptosis might be involved in the pathogenesis of multiple sclerosis (MS). We evaluated apoptosis-related molecules in MS patients before and after autologous haematopoietic stem cell transplantation (AHSCT) using BCNU, Etoposide, AraC and Melphalan (BEAM) or cyclophosphamide (CY)-based conditioning regimens. Patients were followed for clinical and immunological parameters for 2 years after AHSCT. At baseline, MS patients had decreased proapoptotic BAD, BAX and FASL and increased A1 gene expression when compared with healthy counterparts. In the BEAM group, BAK, BIK, BIMEL , FAS, FASL, A1, BCL2, BCLXL , CFLIPL and CIAP2 genes were up-regulated after AHSCT. With the exception of BIK, BIMEL and A1, all genes reached levels similar to controls at day + 720 post-transplantation. Furthermore, in these patients, we observed increased CD8+ Fas+ T cell frequencies after AHSCT when compared to baseline. In the CY group, we observed increased BAX, BCLW, CFLIPL and CIAP1 and decreased BIK and BID gene expressions after transplantation. At day + 720 post-AHSCT, the expression of BAX, FAS, FASL, BCL2, BCLXL and CIAP1 was similar to that of controls. Protein analyses showed increased Bcl-2 expression before transplantation. At 1 year post-AHSCT, expression of Bak, Bim, Bcl-2, Bcl-xL and cFlip-L was decreased when compared to baseline values. In summary, our findings suggest that normalization of apoptosis-related molecules is associated with the early therapeutic effects of AHSCT in MS patients. These mechanisms may be involved in the re-establishment of immune tolerance during the first 2 years post-transplantation.
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Affiliation(s)
- G L V de Oliveira
- Department of Clinical, Toxicological and Bromatological Analysis, Faculty of Pharmaceutical Sciences of Ribeirão Preto, São Paulo, Brazil.,Center for Cell-Based Research, Regional Blood Center of Ribeirão Preto, School of Medicine of Ribeirão Preto, São Paulo, Brazil, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - A F Ferreira
- Department of Clinical, Toxicological and Bromatological Analysis, Faculty of Pharmaceutical Sciences of Ribeirão Preto, São Paulo, Brazil.,Center for Cell-Based Research, Regional Blood Center of Ribeirão Preto, School of Medicine of Ribeirão Preto, São Paulo, Brazil, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - E P L Gasparotto
- Department of Clinical, Toxicological and Bromatological Analysis, Faculty of Pharmaceutical Sciences of Ribeirão Preto, São Paulo, Brazil
| | - S Kashima
- Center for Cell-Based Research, Regional Blood Center of Ribeirão Preto, School of Medicine of Ribeirão Preto, São Paulo, Brazil, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - D T Covas
- Center for Cell-Based Research, Regional Blood Center of Ribeirão Preto, School of Medicine of Ribeirão Preto, São Paulo, Brazil, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil.,Department of Clinical Medicine, School of Medicine of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - C T Guerreiro
- Department of Clinical Medicine, School of Medicine of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - D G Brum
- Department of Neurology, Psicology and Psiquiatry, School of Medicine of Botucatu, University of State of São Paulo (UNESP), Botucatu
| | - A A Barreira
- Department of Clinical Medicine, School of Medicine of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - J C Voltarelli
- Department of Clinical, Toxicological and Bromatological Analysis, Faculty of Pharmaceutical Sciences of Ribeirão Preto, São Paulo, Brazil.,Department of Clinical Medicine, School of Medicine of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - B P Simões
- Center for Cell-Based Research, Regional Blood Center of Ribeirão Preto, School of Medicine of Ribeirão Preto, São Paulo, Brazil, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil.,Department of Clinical Medicine, School of Medicine of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - M C Oliveira
- Center for Cell-Based Research, Regional Blood Center of Ribeirão Preto, School of Medicine of Ribeirão Preto, São Paulo, Brazil, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil.,Department of Clinical Medicine, School of Medicine of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - F A de Castro
- Department of Clinical, Toxicological and Bromatological Analysis, Faculty of Pharmaceutical Sciences of Ribeirão Preto, São Paulo, Brazil
| | - K C R Malmegrim
- Department of Clinical, Toxicological and Bromatological Analysis, Faculty of Pharmaceutical Sciences of Ribeirão Preto, São Paulo, Brazil.,Center for Cell-Based Research, Regional Blood Center of Ribeirão Preto, School of Medicine of Ribeirão Preto, São Paulo, Brazil, University of São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
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Barros PD, Carvalho PD, Alves JL, Oliveira MC, Menezes LF. DD3MAT - a code for yield criteria anisotropy parameters identification. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1742-6596/734/3/032053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Oliveira MC, Labopin M, Henes J, Moore J, Papa ND, Cras A, Sakellari I, Schroers R, Scherer HU, Cuneo A, Kyrcz-Krzemien S, Daikeler T, Alexander T, Finke J, Badoglio M, Simões B, Snowden JA, Farge D. Erratum: Does ex vivo CD34+ positive selection influence outcome after autologous hematopoietic stem cell transplantation in systemic sclerosis patients? Bone Marrow Transplant 2016; 51:889. [DOI: 10.1038/bmt.2016.126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Ongaratti BR, Silva CBO, Trott G, Haag T, Leães CGS, Ferreira NP, Oliveira MC, Pereira-Lima JFS. Expression of merlin, NDRG2, ERBB2, and c-MYC in meningiomas: relationship with tumor grade and recurrence. Braz J Med Biol Res 2016; 49:e5125. [PMID: 27007654 PMCID: PMC4819410 DOI: 10.1590/1414-431x20155125] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 12/17/2015] [Indexed: 11/22/2022] Open
Abstract
Meningiomas are common, usually benign tumors of the central nervous system that have a high rate of post-surgical recurrence or regrowth. We determined expression of the proteins merlin, NDRG2, ERBB2, and c-MYC in meningiomas using immunohistochemistry and assessed relationships between protein expression and gender, age, tumor grade, and recurrence or regrowth. The study sample comprised 60 patients, (44 women and 16 men) with a mean age of 53.2 ± 12.7 years. Tumors were classified as grade I (n=48) or grades II and III (n=12). Expression of merlin, NDRG2, ERBB2, and c-MYC was not significantly different statistically with relation to gender, age, or meningioma recurrence or regrowth. Merlin was expressed in 100% of the cases. No statistically significant difference between tumor grade and recurrence or regrowth was identified. Statistically significant differences were identified between the mean age of patients with grade I (54.83 ± 11.60) and grades II and III (46.58 ± 15.08) meningiomas (P=0.043), between strong c-MYC expression and grades II and III (P<0.001), and between partial surgical resection and tumor recurrence or regrowth (P<0.001). These findings reveal the lower mean age among grades II and III meningioma patients than grade I patients, the influence of the protein merlin on tumorigenesis, the association of c-MYC with aggressive meningiomas, and that partial surgical resection is associated with tumor recurrence or regrowth.
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Affiliation(s)
- B R Ongaratti
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - C B O Silva
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - G Trott
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - T Haag
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - C G S Leães
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - N P Ferreira
- Centro de Neuroendocrinologia, Irmandade Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, RS, Brasil
| | - M C Oliveira
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - J F S Pereira-Lima
- Programa de Pós-Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
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Miguens-Jr SAQ, Borges TS, Dietrich LAB, Oliveira MC, Hernandez PAG, Kramer PF. A Retrospective Study of Oral and Maxillofacial Injuries in an Emergency Hospital in Southern Brazi. Pesqui bras odontopediatria clín integr 2016. [DOI: 10.4034/pboci.2016.161.36] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Oliveira MC, Labopin M, Henes J, Moore J, Del Papa N, Cras A, Sakellari I, Schroers R, Scherer HU, Cuneo A, Kyrcz-Krzemien S, Daikeler T, Alexander T, Finke J, Badoglio M, Simões B, Snowden JA, Farge D, Farge D. Does ex vivo CD34+ positive selection influence outcome after autologous hematopoietic stem cell transplantation in systemic sclerosis patients? Bone Marrow Transplant 2015; 51:501-5. [PMID: 26642332 DOI: 10.1038/bmt.2015.299] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/22/2015] [Accepted: 10/23/2015] [Indexed: 12/20/2022]
Abstract
This EBMT Autoimmune Disease Working Party study aimed to evaluate the influence of CD34+ positive graft selection (CD34+) on the outcome of systemic sclerosis (SSc) patients after autologous hematopoietic stem cell transplantation (AHSCT). Clinical and laboratory data from 138 SSc patients at diagnosis, before and after AHSCT were retrospectively analyzed. CD34+ selection was performed in 47.1% (n=65) patients. By multivariate analysis adjusting for all factors differing between the two groups (without or with CD34+), there was no statistically significant difference in terms of overall survival (hazard ratio (HR): 0.98, 95% confidence interval (CI) 0.40-2.39, P=0.96), PFS (HR: 1.55, 95% CI 0.83-2.88, P=0.17) and incidence of relapse or progression (HR: 1.70, 95% CI 0.85-3.38, P=0.13). We demonstrate that CD34+ does not add benefit to the outcome of SSc patient treated with AHSCT. These findings should be further confirmed by prospective randomized trials.
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Affiliation(s)
- M C Oliveira
- Division of Clinical Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - M Labopin
- EBMT, Hôpital Saint Antoine, Paris, France
| | - J Henes
- Medizinische Universitätsklinik Abt. II, Tübingen, Germany
| | - J Moore
- Department of Haematology, St Vincent's Hospital, Sydney, New South Wales, Australia
| | - N Del Papa
- Scleroderma Clinic, U.O.C. Day Hospital Rheumatology, Osp. G. Pini, Milan, Italy
| | - A Cras
- Assistance Publique-Hôpitaux de Paris, Saint-Louis Hospital, Cell Therapy Unit, Cord Blood Bank and CIC-BT501, Paris, France.,INSERM UMRS 1140, Paris Descartes, Faculté de Pharmacie, Paris, France
| | - I Sakellari
- Bone Marrow Transplantation Unit, George Papanicolaou General Hospital, Thessaloniki, Greece
| | - R Schroers
- Ruhr-Universität Bochum, Medizinische Klinik Knappschaftskrankenhaus, Bochum, Germany
| | - H U Scherer
- Department of Rheumatology, Leiden University Medical Centre, Leiden, The Netherlands
| | - A Cuneo
- University of Ferrara-St Anna Hospital, Ferrara, Italy
| | - S Kyrcz-Krzemien
- Department of Hematology and Bone Marrow Transplantation, Medical University of Silesia, Katowice, Poland
| | - T Daikeler
- Department of Rheumatology, University Hospital Basel, Basel, Switzerland
| | - T Alexander
- Department of Rheumatology and Clinical Immunology, Charité-University Medicine Berlin, Berlin, Germany
| | - J Finke
- Department of Medicine-Hematology and Oncology, University of Freiburg, Freiburg, Germany
| | - M Badoglio
- EBMT Paris Office, Hôpital Saint Antoine, Paris, France
| | - B Simões
- Division of Hematology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - J A Snowden
- Department of Hematology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - D Farge
- Paris 7 University, INSERM U1160, Paris, France.,Unité de Médecine Interne et Pathologie Vasculaire, Saint Louis Hospital, Assistance Publique des Hôpitaux de Paris, Paris 7 Denis Diderot University, Paris, France
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12
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Prevedello DH, Rea-Neto A, Teive HA, Tannous LA, Deucher RAO, Oliveira MC. Chronically critically ill patients: different behavior in severe sepsis and septic shock? Intensive Care Med Exp 2015. [PMCID: PMC4798559 DOI: 10.1186/2197-425x-3-s1-a83] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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13
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Teixeira AS, Oliveira MC, Menezes JF, Gouvea BM, Teixeira SR, Gomes AR. Poultry litter of wood shavings and/or sugarcane bagasse: animal performance and bed quality. REV COLOMB CIENC PEC 2015. [DOI: 10.17533/udea.rccp.v28n3a4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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14
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Carlesso FN, Fuscaldi LL, Araújo RS, Teixeira CS, Oliveira MC, Fernandes SOA, Cassali GD, Reis DC, Barros ALB, Cardoso VN. Evaluation of (99m)Tc-HYNIC-βAla-Bombesin(7-14) as an agent for pancreas tumor detection in mice. ACTA ACUST UNITED AC 2015; 48:923-8. [PMID: 26445336 PMCID: PMC4617119 DOI: 10.1590/1414-431x20154506] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 02/06/2015] [Indexed: 11/30/2022]
Abstract
Pancreatic adenocarcinoma is important in oncology because of its high mortality
rate. Deaths may be avoided if an early diagnosis could be achieved. Several types of
tumors overexpress gastrin-releasing peptide receptors (GRPr), including pancreatic
cancer cells. Thus, a radiolabeled peptide derivative of gastrin-releasing peptide
(GRP) may be useful as a specific imaging probe. The purpose of the present study was
to evaluate the feasibility of
using99mTc-HYNIC-βAla-Bombesin(7-14)as an imaging probe for
Capan-1 pancreatic adenocarcinoma. Xenographic pancreatic tumor was developed in nude
mice and characterized by histopathological analysis. Biodistribution studies and
scintigraphic images were carried out in tumor-bearing nude mice. The two methods
showed higher uptake by pancreatic tumor when compared to muscle (used as control),
and the tumor-to-muscle ratio indicated
that99mTc-HYNIC-βAla-Bombesin(7-14)uptake was four-fold
higher in tumor cells than in other tissues. Scintigraphic images also showed a clear
signal at the tumor site. The present data indicate
that99mTc-HYNIC-βAla-Bombesin(7-14)may be useful for the
detection of pancreatic adenocarcinoma.
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Affiliation(s)
- F N Carlesso
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - L L Fuscaldi
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - R S Araújo
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - C S Teixeira
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - M C Oliveira
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - S O A Fernandes
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - G D Cassali
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - D C Reis
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - A L B Barros
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
| | - V N Cardoso
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR
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15
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Trott G, Pereira-Lima JFS, Leães CGS, Ferreira NP, Barbosa-Coutinho LM, Oliveira MC. Abundant immunohistochemical expression of dopamine D2 receptor and p53 protein in meningiomas: follow-up, relation to gender, age, tumor grade, and recurrence. ACTA ACUST UNITED AC 2015; 48:415-9. [PMID: 25742638 PMCID: PMC4445664 DOI: 10.1590/1414-431x20144163] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 11/26/2014] [Indexed: 11/22/2022]
Abstract
Meningiomas are common, usually benign tumors, with a high postoperative recurrence
rate. However, the genesis and development of these tumors remain controversial. We
aimed to investigate the presence and implications of a mutated p53 protein and
dopamine D2 receptor in a representative series of meningiomas and to
correlate these findings with age, gender, tumor grade, and recurrence. Tumor tissue
samples of 157 patients diagnosed with meningioma (37 males and 120 females, mean age
53.6±14.3 years) who underwent surgical resection between 2003 and 2012 at our
institution were immunohistochemically evaluated for the presence of p53 protein and
dopamine D2 receptor and were followed-up to analyze tumor recurrence or
regrowth. Tumors were classified as grades I (n=141, 89.8%), II (n=13, 8.3%), or
grade III (n=3, 1.9%). Dopamine D2 receptor and p53 protein expression
were positive in 93.6% and 49.7% of the cases, respectively. Neither of the markers
showed significant expression differences among different tumor grades or recurrence
or regrowth statuses. Our findings highlight the potential role of p53 protein in
meningioma development and/or progression. The high positivity of dopamine
D2 receptor observed in this study warrants further investigation of
the therapeutic potential of dopamine agonists in the evolution of meningiomas.
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Affiliation(s)
- G Trott
- Programa de Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - J F S Pereira-Lima
- Programa de Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - C G S Leães
- Programa de Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - N P Ferreira
- Centro de Neuroendocrinologia, Complexo Hospitalar Santa Casa de Porto Alegre, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - L M Barbosa-Coutinho
- Programa de Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
| | - M C Oliveira
- Programa de Graduação em Patologia, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brasil
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16
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Arruda LCM, Lorenzi JCC, Sousa APA, Zanette DL, Palma PVB, Panepucci RA, Brum DS, Barreira AA, Covas DT, Simões BP, Silva WA, Oliveira MC, Malmegrim KCR. Autologous hematopoietic SCT normalizes miR-16, -155 and -142-3p expression in multiple sclerosis patients. Bone Marrow Transplant 2014; 50:380-9. [PMID: 25486582 DOI: 10.1038/bmt.2014.277] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 10/17/2014] [Accepted: 10/21/2014] [Indexed: 12/29/2022]
Abstract
Autologous hematopoietic SCT (AHSCT) has been investigated in the past as a therapeutic alternative for multiple sclerosis (MS). Despite advances in clinical management, knowledge about mechanisms involved with clinical remission post transplantation is still limited. Abnormal microRNA and gene expression patterns were described in MS and have been suggested as disease biomarkers and potential therapeutic targets. Here we assessed T- and B-cell reconstitution, microRNAs and immunoregulatory gene expression after AHSCT. Early immune reconstitution was mainly driven by peripheral homeostatic proliferation. AHSCT increased CD4(+)CD25(hi)FoxP3(+) regulatory T-cell counts and expression of CTLA-4 and GITR (glucocorticoid-induced TNFR) on CD4(+)CD25(hi) T cells. We found transient increase in exhausted PD-1(+) T cells and of suppressive CD8(+)CD28(-)CD57(+) T cells. At baseline, CD4(+) and CD8(+) T cells from MS patients presented upregulated miR-16, miR-155 and miR-142-3p and downregulated FOXP3, FOXO1, PDCD1 and IRF2BP2. After transplantation, the expression of FOXP3, FOXO1, PDCD1 and IRF2BP2 increased, reaching control levels at 2 years. Expression of miR-16, miR-155 and miR-142-3p decreased towards normal levels at 6 months post therapy, remaining downregulated until the end of follow-up. These data strongly suggest that AHSCT normalizes microRNA and gene expression, thereby improving the immunoregulatory network. These mechanisms may be important for disease control in the early periods after AHSCT.
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Affiliation(s)
- L C M Arruda
- 1] Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil [2] Department of Biochemistry and Immunology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - J C C Lorenzi
- Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - A P A Sousa
- 1] Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil [2] Division of Brain Sciences, Faculty of Medicine, Imperial College London, London, UK
| | - D L Zanette
- Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - P V B Palma
- Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - R A Panepucci
- 1] Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil [2] Division of Hematology, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - D S Brum
- Department of Neuroscience and Behavioral Science, Hospital das Clínicas, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - A A Barreira
- Department of Neuroscience and Behavioral Science, Hospital das Clínicas, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - D T Covas
- Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - B P Simões
- 1] Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil [2] Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - W A Silva
- Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - M C Oliveira
- 1] Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil [2] Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - K C R Malmegrim
- 1] Center for Cell-based Therapy, Regional Blood Center of Ribeirão Preto, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil [2] Department of Clinical, Toxicological and Bromatological Analyses, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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17
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Oliveira MC, Neto C, Ribeiro Morais G, Thiemann T. Steroid receptor ligands for breast cancer targeting: an insight into their potential role as PET imaging agents. Curr Med Chem 2013; 20:222-45. [PMID: 23231090 DOI: 10.2174/092986713804806658] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 11/29/2012] [Accepted: 12/02/2012] [Indexed: 11/22/2022]
Abstract
The design and development of radiolabelled steroid derivatives has been an important area of research due to their wellknown value in breast cancer targeting. The estrogen receptor (ER) and progesterone receptor (PR) are important biomarkers in the diagnosis, prognosis and follow-up of the therapeutic response of breast tumours. Thus, several radioligands based on estrogens and progestins have been proposed for targeted functional ER imaging. The aim of this review is to survey and analyze the developments in this field, which have led to the design of a number of PET steroid-based imaging agents, a few of which seem to be promising as radiopharmaceuticals for detection of ER-positive breast tumours.
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Affiliation(s)
- M C Oliveira
- Unidade de Ciências Químicas e Radiofarmacêuticas, IST/ITN, Instituto Superior Técnico, Universidade Técnica de Lisboa, Estrada Nacional 10, 2686-953 Sacavém, Portugal.
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18
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Arantes UM, Stringhini JH, Oliveira MC, Martins PC, Rezende PM, Andrade MA, Leandro NSM, Café MB. Effect of different electrolyte balances in broiler diets. Rev Bras Cienc Avic 2013. [DOI: 10.1590/s1516-635x2013000300010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Vieira FP, Mesquita TL, Lara PCP, Ramaldes GA, Beinner MA, Silva JBB, Oliveira MC, Silveira JN. ET AAS evaluation of the stability and pH-sensitivity of, pH-sensitive stealth liposomes containing cisplatin in mouse plasma. J Pharm Biomed Anal 2013; 84:135-9. [PMID: 23831488 DOI: 10.1016/j.jpba.2013.05.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 05/25/2013] [Accepted: 05/27/2013] [Indexed: 10/26/2022]
Abstract
In this work, stability and the pH-sensitivity of pH-sensitive stealth liposomes containing cisplatin exposed to plasma medium and their subsequent responses to pH modifications were evaluated. A method to determine platin in mouse plasma by electrothermal atomic absorption spectroscopy (ET AAS) was developed and validated. At first, a comparative study of sample preparation treatments with basic, acidic, and acidic added with Triton X-100 as a modifier was done. The best treatment was obtained with HCl 3% (v/v). The ET AAS method with acid treatment presented linearity at a range of 10-160 ng Pt/mL. The limits of detection (LOD) was 3.1 ng/mL Pt for acid treatment, while the limit quantification (LOQ) was 10 ng/mL Pt. The acid treatment presented good repeatability (VC<15.0%) and recovery close to 100%. This treatment was chosen for subsequent studies due to its best value of repeatability, recovery, LOD and lowest cost. pH-sensitive stealth liposomes, containing cisplatin, demonstrated low stability and poor response to pH variation after plasma incubation. These findings suggest that further studies are needed to improve liposome formulation i.e., to reduce its size.
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Affiliation(s)
- F P Vieira
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Brazil
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20
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Rebelo MJ, Rego R, Ferreira M, Oliveira MC. Comparative study of the antioxidant capacity and polyphenol content of Douro wines by chemical and electrochemical methods. Food Chem 2013; 141:566-73. [PMID: 23768395 DOI: 10.1016/j.foodchem.2013.02.120] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 02/25/2013] [Accepted: 02/28/2013] [Indexed: 10/27/2022]
Abstract
A comparative study of the antioxidant capacity and polyphenols content of Douro wines by chemical (ABTS and Folin-Ciocalteau) and electrochemical methods (cyclic voltammetry and differential pulse voltammetry) was performed. A non-linear correlation between cyclic voltammetric results and ABTS or Folin-Ciocalteau data was obtained if all types of wines (white, muscatel, ruby, tawny and red wines) are grouped together in the same correlation plot. In contrast, a very good linear correlation was observed between the electrochemical antioxidant capacity determined by differential pulse voltammetry and the radical scavenging activity of ABTS. It was also found that the antioxidant capacity of wines evaluated by the electrochemical methods (expressed as gallic acid equivalents) depend on background electrolyte of the gallic acid standards, type of electrochemical signal (current or charge) and electrochemical technique.
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Affiliation(s)
- M J Rebelo
- CQ-VR, Chemistry Unit - Vila Real, Department of Chemistry, University of Trás-os-Montes e Alto Douro, Apartado 1013, 5001-801 Vila Real, Portugal
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21
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Westphal GA, Caldeira Filho M, Fiorelli A, Vieira KD, Zaclikevis V, Bartz M, Wanzuita R, Teixeira C, Franke C, Machado FO, Friedman G, Andrade J, Matos JD, Lamgaro DM, Silva E, Costa G, Coelho ME, Oliveira MC, Youssef NCM, Akamine N, Duarte P, Lisboa R, Mazzali M, Ferraz Neto BH. Guidelines for maintenance of adult patients with brain death and potential for multiple organ donations: the Task Force of the Brazilian Association of Intensive Medicine the Brazilian Association of Organs Transplantation, and the Transplantation Center of Santa Catarina. Transplant Proc 2013; 44:2260-7. [PMID: 23026569 DOI: 10.1016/j.transproceed.2012.07.019] [Citation(s) in RCA: 18] [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] [Indexed: 11/17/2022]
Abstract
INTRODUCTION The organ shortage for transplantation, the principal factor that increases waiting lists, has become a serious public health problem. In this scenario, the intensivist occupies a prominent position as one of the professionals that first has a chance to identify brain death and to be responsible for the maintenance of the potential deceased donor. OBJECTIVE This report attempts to establish guidelines for care and maintenance of adult deceased donor organs guiding and standardizing care provided to patients with brain death. METHOD These guidelines were composed by intensivists, transplant coordinators, professionals from various transplant teams, and used transplant center. The formulated questions were forwarded to all members and recommendations were constructed after an extensive literature review selecting articles with the highest degree of evidence. RESULTS Guidelines were developed in the form of questions reflecting frequent experiences in clinical intensive care practices. The main questions were: Is there an optimal interval for keeping organs of deceased donors viable? What actions are considered essential for maintaining deceased donors in this period? What are the limits of body temperature? How should the patient be warmed? Which laboratory tests should be performed? What is the collection interval? What are the limits in the laboratory and the capture scenario? What are the limits of blood pressure? When and how should one use catecholamines? CONCLUSIONS This pioneer project involved a multidisciplinary team working in organ transplantation seeking to provide treatment guidance to increase the number of viable organs from deceased adult donors.
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Affiliation(s)
- G A Westphal
- Brazilian Association of Intensive Medicine, the Brazilian Association of Organ Transplants (ABTO), and the Transplantation Center of Santa Catarina (SC-Tx), Santa Catarina, Brazil
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Fernandes C, Oliveira MC, Jorge MT. A case report of Citrobacter koseri bacteraemia after transfusion of contaminated red cells. Transfus Med 2012; 22:450-1. [PMID: 23035958 DOI: 10.1111/j.1365-3148.2012.01186.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Revised: 08/09/2012] [Accepted: 08/22/2012] [Indexed: 11/30/2022]
Abstract
BACKGROUND Citrobacter koseri has not been associated to infection caused by blood component transfusions. CASE REPORT A 46-year-old female patient presented sudden chills, dyspnoea, and tachycardia during a transfusion from a unit of packed red blood cells. Citrobacter koseri was isolated in the two sample collected from the patient and from the content of the packed red blood cells. RESULTS We report a case of bacteraemia due to a transfusion of contaminated red blood cells. CONCLUSION C. koseri should be taken into account in bacteraemias caused by transfusion of blood components.
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Affiliation(s)
- C Fernandes
- Clinical Hospital of the Federal University of Uberlândia, Uberlândia, MG, Brazil
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23
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Fernandes M, Nobre SS, Rodrigues LC, Gonçalves A, Rego R, Oliveira MC, Ferreira RAS, Fortunato E, Silva MM, Carlos LD, Bermudez VDZ. Li(+)- and Eu(³+)-doped poly(ε-caprolactone)/siloxane biohybrid electrolytes for electrochromic devices. ACS Appl Mater Interfaces 2011; 3:2953-2965. [PMID: 21774498 DOI: 10.1021/am200391b] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The sol-gel process has been successfully combined with the "mixed cation" effect to produce novel luminescent and ion conducting biohybrids composed of a diurethane cross-linked poly(ε-caprolactone) (PCL530)/siloxane hybrid network (PCL stands for the poly(ε-caprolactone) biopolymer and 530 is the average molecular weight in gmol(-1)) doped with a wide range of concentrations of lithium and europium triflates (LiCF(3)SO(3) and Eu(CF(3)SO(3))(3), respectively) (molar ratio of ca. 50:50). The hybrid samples are all semicrystalline: whereas at n = 52.6 and 27.0 (n, composition, corresponds to the number of (C(═O)(CH(2))(5)O) repeat units of PCL(530) per mixture of Li(+) and Eu(3+) ions) a minor proportion of crystalline PCL(530) chains is present, at n = 6.1, a new crystalline phase emerges. The latter electrolyte is thermally stable up to 220 °C and exhibits the highest conductivity over the entire range of temperatures studied (3.7 × 10(-7) and 1.71 × 10(-4) S cm(-1) at 20 and 102 °C, respectively). According to infrared spectroscopic data, major modifications occur in terms of hydrogen bonding interactions at this composition. The electrochemical stability domain of the biohybrid sample with n = 27 spans more than 7 V versus Li/Li(+). This sample is a room temperature white light emitter. Its emission color can be easily tuned across the Commission Internationale d'Éclairage (CIE) chromaticity diagram upon simply changing the excitation wavelength. Preliminary tests performed with a prototype electrochromic device (ECD) comprising the sample with n = 6.1 as electrolyte and WO(3) as cathodically coloring layer are extremely encouraging. The device exhibits switching time around 50 s, an optical density change of 0.15, good open circuit memory under atmospheric conditions (ca. 1 month) and high coloration efficiency (577 cm(2) C(-1) in the second cycle).
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Affiliation(s)
- M Fernandes
- Department of Chemistry and CQ-VR, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal
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Leal AMO, Oliveira MC, Couri CEB, Moraes DA, Stracieri ABPL, Pieroni F, Soares RDA, Barros GN, Simões BP, Foss MC, Voltarelli JC. Testicular function in patients with type 1 diabetes treated with high-dose CY and autologous hematopoietic SCT. Bone Marrow Transplant 2011; 47:467-8. [DOI: 10.1038/bmt.2011.113] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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25
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Bittencourt-Oliveira MC, Oliveira MC, Pinto E. Diversity of microcystin-producing genotypes in Brazilian strains of Microcystis (Cyanobacteria). BRAZ J BIOL 2011; 71:209-16. [DOI: 10.1590/s1519-69842011000100030] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Accepted: 07/07/2010] [Indexed: 11/21/2022] Open
Abstract
Microcystis Kützing ex Lemmermann is among the genera of cyanobacteria often associated to toxic blooms with the release of microcystins. A gene cluster codes for microcystin synthetases, which are involved in the biosynthesis of this toxin. The aim of the present study was to investigate the genetic diversity of the mcyB gene, specifically the B1 module, in Brazilian strains of Microcystis spp. and its microcystin variants. Broad genetic diversity was revealed in this region. From the phylogenetic analysis, three clusters were obtained that were not related to the geographic origin or morphospecies of the strains, nor with the variant of the microcystin produced. A group of strains that did not produce microcystins was found, despite the presence of the mcyB1 fragment. Eight microcystin isoforms were detected: MC-LR, [D-Asp³]-MC-LR, [Asp³]-MC-LR, MC-RR, [Dha7]-MC-LR, MC-LF, MC-LW and [D-Asp³, EtAdda5]-MC-LH, the latter of which is described for the first time in Brazil. Moreover, five other variants were not identified and indicate being new.
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Affiliation(s)
| | | | - E Pinto
- Universidade de São Paulo, Brazil
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26
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Hamerschlak N, Rodrigues M, Moraes DA, Oliveira MC, Stracieri ABPL, Pieroni F, Barros GMN, Madeira MIA, Simões BP, Barreira AA, Brum DG, Ribeiro AAF, Kutner JM, Tylberi CP, Porto PP, Santana CL, Neto JZ, Barros JC, Paes AT, Burt RK, Oliveira EA, Mastropietro AP, Santos AC, Voltarelli JC. Brazilian experience with two conditioning regimens in patients with multiple sclerosis: BEAM/horse ATG and CY/rabbit ATG. Bone Marrow Transplant 2009; 45:239-48. [DOI: 10.1038/bmt.2009.127] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gonzales PH, Rhoden CR, Luz C, Corrêa G, Barbosa-Coutinho LM, Oliveira MC. Male gonadal function, prolactin secretion and lactotroph population in an experimental model of cirrhosis. ACTA ACUST UNITED AC 2007; 40:1383-8. [PMID: 17713659 DOI: 10.1590/s0100-879x2006005000150] [Citation(s) in RCA: 12] [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] [Received: 01/18/2006] [Accepted: 06/12/2007] [Indexed: 11/22/2022]
Abstract
Liver cirrhosis, a highly prevalent chronic disease, is frequently associated with endocrine dysfunctions, notably in the gonadal axis. We evaluated lactotroph population by immunohistochemistry, gonadotropins and prolactin by immunoradiometric assay and testosterone and estradiol by radioimmunoassay in adult male Wistar rats with cirrhosis induced by carbon tetrachloride. No significant difference in mean +/- SEM percentages of lactotrophs was found between cirrhotic animals and controls (N = 12, mean 18.95 +/- 1.29%). Although there was no significant difference between groups in mean serum levels of prolactin (control: 19.2 +/- 4 ng/mL), luteinizing hormone (control: 1.58 +/- 0.43 ng/mL), follicle-stimulating hormone (control: 19.11 +/- 2.28 ng/mL), estradiol (control: 14.65 +/- 3.22 pg/mL), and total testosterone (control: 138.41 +/- 20.07 ng/dL), 5 of the cirrhotic animals presented a hormonal profile consistent with hypogonadism, all of them pointing to a central origin of this dysfunction. Four of these animals presented high levels of estradiol and/or prolactin, with a significant correlation between these two hormones in both groups (r = 0.54; P = 0.013). It was possible to detect the presence of central hypogonadism in this model of cirrhotic animals. The hyperestrogenemia and hyperprolactinemia found in some hypogonadal animals suggest a role in the genesis of hypogonadism, and in the present study they were not associated with lactotroph hyperplasia.
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Affiliation(s)
- P H Gonzales
- Departamento de Endocrinologia, Fundação Faculdade Federal de Ciências Médicas de Porto Alegre, RS, Brasil
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Oishi JO, Thome LC, Rea-Neto A, Oliveira MC, Rocha JL, Lemke VG. Critically ill patients with Takotsubo cardiomyopathy. Crit Care 2007. [PMCID: PMC3301167 DOI: 10.1186/cc5827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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Oliveira MC, Silveira EJD, Godoy GP, Amorim RFB, Costa ALL, Queiroz LMG. Immunohistochemical evaluation of intermediate filament proteins in squamous papilloma and oral verrucous carcinoma. Oral Dis 2005; 11:288-92. [PMID: 16120114 DOI: 10.1111/j.1601-0825.2005.01118.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Cytokeratins (CKs) are the intermediate filament proteins of the epithelium cells, which have become important markers of normal and abnormal cell differentiation. The goal of the present study was to investigate the expression pattern of CK 10, 13, 14 and 16 in oral verrucous carcinoma (OVC) and oral squamous papilloma (OSP). MATERIAL AND METHODS Formalin-fixed paraffin-embedded sections from eight cases of each lesion were assessed. Immunohistochemistry was carried out using streptoavidin-biotin complex method. RESULTS In OVC, CK 10 was expressed in suprabasal to superficial layers whereas in OSP mainly in superficial layer. CK 13 was detected in prickle and superficial cells in most cases of OVC and in suprabasal to superficial cells of OSP. All the cell layers of OVC reacted positively for CK 14 while basal and suprabasal layers of OSP were more pronounced for CK 14. Finally, CK 16 was observed in suprabasal to superficial layer in OVC and the majority cases in OSP showed only superficial reactive cells. CONCLUSIONS CK 10, 13, 14 and 16 immunohistochemical profile emphasis the biological behavior of the studied lesions and confirm the use of these proteins as markers of differentiation.
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Affiliation(s)
- M C Oliveira
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Norte, Natal-RN, Brazil
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Abstract
Gastrointestinal stromal tumors (GISTs) are rarely reported in the esophagus. The authors report a patient with an esophageal GIST, incidentally found after an echocardiogram. CT scan and endoscopic ultrasonography showed the tumor in the dependence of the muscularis propria of the esophageal wall. An Ivor-Lewis esophagectomy was performed. The tumor was well-circumscribed involving the submucosal and the muscular layers of the esophagus, measuring 13.5 x 8.5 x 7.6 cm, without involving the surgical margins. Histologically, the tumor consisted of spindle cells, with low mitotic index (2/50 HPF), that were immunoreactive for KIT (CD117) and CD34, consistent with GIST of high risk of aggressive behavior. No adjuvant therapy was given to the patient, who is alive and without evidence of disease 1 year after surgery. Since esophageal GISTs are rarely reported in the literature and usually have a poor prognosis, the diagnostic differentiation of these tumors from other more common mesenchymal neoplasms is essential, both for therapeutic and prognostic reasons.
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Affiliation(s)
- A M Gouveia
- Serviço de Cirurgia B, Hospital de Sao Joao, Portugal
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31
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Oliveira M, Réa-neto A. Crit Care 2005; 9:P123. [DOI: 10.1186/cc3667] [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: 11/10/2022] Open
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Oliveira M, Réa-neto A. Crit Care 2005; 9:P125. [DOI: 10.1186/cc3669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Oliveira M, Réa-neto A. Crit Care 2005; 9:P124. [DOI: 10.1186/cc3668] [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: 11/10/2022] Open
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Nascimento ALTO, Ko AI, Martins EAL, Monteiro-Vitorello CB, Ho PL, Haake DA, Verjovski-Almeida S, Hartskeerl RA, Marques MV, Oliveira MC, Menck CFM, Leite LCC, Carrer H, Coutinho LL, Degrave WM, Dellagostin OA, El-Dorry H, Ferro ES, Ferro MIT, Furlan LR, Gamberini M, Giglioti EA, Góes-Neto A, Goldman GH, Goldman MHS, Harakava R, Jerônimo SMB, Junqueira-de-Azevedo ILM, Kimura ET, Kuramae EE, Lemos EGM, Lemos MVF, Marino CL, Nunes LR, de Oliveira RC, Pereira GG, Reis MS, Schriefer A, Siqueira WJ, Sommer P, Tsai SM, Simpson AJG, Ferro JA, Camargo LEA, Kitajima JP, Setubal JC, Van Sluys MA. Comparative genomics of two Leptospira interrogans serovars reveals novel insights into physiology and pathogenesis. J Bacteriol 2004; 186:2164-72. [PMID: 15028702 PMCID: PMC374407 DOI: 10.1128/jb.186.7.2164-2172.2004] [Citation(s) in RCA: 312] [Impact Index Per Article: 15.6] [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: 11/20/2022] Open
Abstract
Leptospira species colonize a significant proportion of rodent populations worldwide and produce life-threatening infections in accidental hosts, including humans. Complete genome sequencing of Leptospira interrogans serovar Copenhageni and comparative analysis with the available Leptospira interrogans serovar Lai genome reveal that despite overall genetic similarity there are significant structural differences, including a large chromosomal inversion and extensive variation in the number and distribution of insertion sequence elements. Genome sequence analysis elucidates many of the novel aspects of leptospiral physiology relating to energy metabolism, oxygen tolerance, two-component signal transduction systems, and mechanisms of pathogenesis. A broad array of transcriptional regulation proteins and two new families of afimbrial adhesins which contribute to host tissue colonization in the early steps of infection were identified. Differences in genes involved in the biosynthesis of lipopolysaccharide O side chains between the Copenhageni and Lai serovars were identified, offering an important starting point for the elucidation of the organism's complex polysaccharide surface antigens. Differences in adhesins and in lipopolysaccharide might be associated with the adaptation of serovars Copenhageni and Lai to different animal hosts. Hundreds of genes encoding surface-exposed lipoproteins and transmembrane outer membrane proteins were identified as candidates for development of vaccines for the prevention of leptospirosis.
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Affiliation(s)
- A L T O Nascimento
- Centro de Biotecnologia, Instituto Butantan, Universidade de São Paulo, São Paulo, Brazil.
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Nascimento ALTO, Verjovski-Almeida S, Van Sluys MA, Monteiro-Vitorello CB, Camargo LEA, Digiampietri LA, Harstkeerl RA, Ho PL, Marques MV, Oliveira MC, Setubal JC, Haake DA, Martins EAL. Genome features of Leptospira interrogans serovar Copenhageni. Braz J Med Biol Res 2004; 37:459-77. [PMID: 15064809 PMCID: PMC2666282 DOI: 10.1590/s0100-879x2004000400003] [Citation(s) in RCA: 154] [Impact Index Per Article: 7.7] [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: 11/21/2022] Open
Abstract
We report novel features of the genome sequence of Leptospira interrogans serovar Copenhageni, a highly invasive spirochete. Leptospira species colonize a significant proportion of rodent populations worldwide and produce life-threatening infections in mammals. Genomic sequence analysis reveals the presence of a competent transport system with 13 families of genes encoding for major transporters including a three-member component efflux system compatible with the long-term survival of this organism. The leptospiral genome contains a broad array of genes encoding regulatory system, signal transduction and methyl-accepting chemotaxis proteins, reflecting the organism's ability to respond to diverse environmental stimuli. The identification of a complete set of genes encoding the enzymes for the cobalamin biosynthetic pathway and the novel coding genes related to lipopolysaccharide biosynthesis should bring new light to the study of Leptospira physiology. Genes related to toxins, lipoproteins and several surface-exposed proteins may facilitate a better understanding of the Leptospira pathogenesis and may serve as potential candidates for vaccine.
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Abstract
Pituitary adenomas sometimes show rapid growth and recurrence, and about one third invade the structures surrounding the sella turcica. In an attempt to determine aggressive behavior at an early stage, we used the MIB-1 antibody to identify the Ki-67 antigen. The present study was designed to evaluate pituitary adenomatous tissue in terms of secretion and proliferation and to correlate the Ki-67 index with hormone phenotype and invasive behavior. Material from 159 patients submitted to one or more resections of pituitary adenomas was evaluated. Forty-two non-secretory adenomas and 43 adenomas immunoreactive for growth hormone, 19 for prolactin, 18 for growth hormone and prolactin, 16 for adrenocorticotropic hormone (ACTH), and 21 cases of plurihormonal/gonadotropin adenomas were detected by immunohistochemistry. The MIB-1 antibody was positive in 139 samples and the Ki-67 index ranged from 0.16 to 15.48% (mean = 1.22 +/- 2.09%), with no significant difference between genders, age groups, or secretory and non-secretory status. The Ki-67 index was higher in ACTH-secreting adenomas. Invasive pituitary adenomas had a significantly higher Ki-67 index (2.01 +/- 3.15%) than macroadenomas with or without supra-sellar extension (1.12 +/- 1.87%; P = 0.02). The index was not significantly different in the subgroup of adenomas with invasion of the cavernous sinus compared to groups with other types of invasion. We conclude that tumoral proliferative activity evaluated by the detection of the Ki-67 antigen is significantly higher in invasive than noninvasive adenomas, information which can be useful in therapeutic postoperative management since index cut-off values associated with aggressive behavior can be established.
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Affiliation(s)
- C B Pizarro
- Departamento de Endocrinologia, Fundação Faculdade Federal de Ciências Médicas de Porto Alegre, Rua Dona Mimi Moro 40, 90480-050 Porto Alegre, RS, Brazil
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Rocha AS, Soares P, Fonseca E, Cameselle-Teijeiro J, Oliveira MC, Sobrinho-Simões M. E-cadherin loss rather than beta-catenin alterations is a common feature of poorly differentiated thyroid carcinomas. Histopathology 2003; 42:580-7. [PMID: 12786894 DOI: 10.1046/j.1365-2559.2003.01642.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIMS To investigate the immunohistochemical and molecular genetic features of the cadherins/catenins complex in thyroid carcinoma based on the hypothesis that poorly differentiated carcinoma of the thyroid represents an intermediate step between well-differentiated and undifferentiated carcinomas. METHODS AND RESULTS Immunohistochemistry for E-, P- and N-cadherins and alpha-, beta- and gamma-catenins was performed in a series of 17 cases of poorly differentiated carcinoma of the thyroid. All cases showed absence of membranous expression of E-cadherin with no aberrant expression of P- or N-cadherins; regarding catenins there was heterogeneous loss of expression with membranous immunolocalization of the three catenins in most cases. Molecular analysis of the E-cadherin gene and exon 3 of the beta-catenin gene was also performed by polymerase chain reaction/single-strand conformation polymorphism and sequencing. No mutations in either gene were detected in any case. CONCLUSIONS In contrast to previous reports, our results suggest that loss of E-cadherin rather than beta-catenin mutation is the crucial event in determining the differentiation 'level' of thyroid carcinomas.
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Affiliation(s)
- A S Rocha
- IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto, Portugal
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Grynberg NF, Carvalho MG, Velandia JR, Oliveira MC, Moreira IC, Braz-Filho R, Echevarria A. DNA topoisomerase inhibitors: biflavonoids from Ouratea species. Braz J Med Biol Res 2002; 35:819-22. [PMID: 12131922 DOI: 10.1590/s0100-879x2002000700009] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [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
Topoisomerase inhibitors are agents with anticancer activity. 7"-O-Methyl-agathisflavone (I) and amentoflavone (II) are biflavonoids and were isolated from the Brazilian plants Ouratea hexasperma and O. semiserrata, respectively. These biflavonoids and the acetyl derivative of II (IIa) are inhibitors of human DNA topoisomerases I at 200 microM, as demonstrated by the relaxation assay of supercoiled DNA, and only agathisflavone (I) at 200 microM also inhibited DNA topoisomerases II-alpha, as observed by decatenation and relaxation assays. The biflavonoids showed concentration-dependent growth inhibitory activities on Ehrlich carcinoma cells in 45-h culture, assayed by a tetrazolium method, with IC50 = 24 +/- 1.4 microM for I, 26 +/- 1.1 microM for II and 10 +/- 0.7 microM for IIa. These biflavonoids were assayed against human K562 leukemia cells in 45-h culture, but only I showed 42% growth inhibitory activity at 90 microM. Our results suggest that biflavonoids are targets for DNA topoisomerases and their cytotoxicity is dependent on tumor cell type.
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Affiliation(s)
- N F Grynberg
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brasil
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da Silva ACR, Ferro JA, Reinach FC, Farah CS, Furlan LR, Quaggio RB, Monteiro-Vitorello CB, Van Sluys MA, Almeida NF, Alves LMC, do Amaral AM, Bertolini MC, Camargo LEA, Camarotte G, Cannavan F, Cardozo J, Chambergo F, Ciapina LP, Cicarelli RMB, Coutinho LL, Cursino-Santos JR, El-Dorry H, Faria JB, Ferreira AJS, Ferreira RCC, Ferro MIT, Formighieri EF, Franco MC, Greggio CC, Gruber A, Katsuyama AM, Kishi LT, Leite RP, Lemos EGM, Lemos MVF, Locali EC, Machado MA, Madeira AMBN, Martinez-Rossi NM, Martins EC, Meidanis J, Menck CFM, Miyaki CY, Moon DH, Moreira LM, Novo MTM, Okura VK, Oliveira MC, Oliveira VR, Pereira HA, Rossi A, Sena JAD, Silva C, de Souza RF, Spinola LAF, Takita MA, Tamura RE, Teixeira EC, Tezza RID, Trindade dos Santos M, Truffi D, Tsai SM, White FF, Setubal JC, Kitajima JP. Comparison of the genomes of two Xanthomonas pathogens with differing host specificities. Nature 2002; 417:459-63. [PMID: 12024217 DOI: 10.1038/417459a] [Citation(s) in RCA: 782] [Impact Index Per Article: 35.5] [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: 11/09/2022]
Abstract
The genus Xanthomonas is a diverse and economically important group of bacterial phytopathogens, belonging to the gamma-subdivision of the Proteobacteria. Xanthomonas axonopodis pv. citri (Xac) causes citrus canker, which affects most commercial citrus cultivars, resulting in significant losses worldwide. Symptoms include canker lesions, leading to abscission of fruit and leaves and general tree decline. Xanthomonas campestris pv. campestris (Xcc) causes black rot, which affects crucifers such as Brassica and Arabidopsis. Symptoms include marginal leaf chlorosis and darkening of vascular tissue, accompanied by extensive wilting and necrosis. Xanthomonas campestris pv. campestris is grown commercially to produce the exopolysaccharide xanthan gum, which is used as a viscosifying and stabilizing agent in many industries. Here we report and compare the complete genome sequences of Xac and Xcc. Their distinct disease phenotypes and host ranges belie a high degree of similarity at the genomic level. More than 80% of genes are shared, and gene order is conserved along most of their respective chromosomes. We identified several groups of strain-specific genes, and on the basis of these groups we propose mechanisms that may explain the differing host specificities and pathogenic processes.
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Affiliation(s)
- A C R da Silva
- Departamento de Bioquímica, Instituto de Química, Av. Prof. Lineu Prestes 748, São Paulo, SP, Brazil
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Van Sluys MA, Monteiro-Vitorello CB, Camargo LEA, Menck CFM, Da Silva ACR, Ferro JA, Oliveira MC, Setubal JC, Kitajima JP, Simpson AJ. Comparative genomic analysis of plant-associated bacteria. Annu Rev Phytopathol 2002; 40:169-189. [PMID: 12147758 DOI: 10.1146/annurev.phyto.40.030402.090559] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
This review deals with a comparative analysis of seven genome sequences from plant-associated bacteria. These are the genomes of Agrobacterium tumefaciens, Mesorhizobium loti, Sinorhizobium meliloti, Xanthomonas campestris pv campestris, Xanthomonas axonopodis pv citri, Xylella fastidiosa, and Ralstonia solanacearum. Genome structure and the metabolism pathways available highlight the compromise between the genome size and lifestyle. Despite the recognized importance of the type III secretion system in controlling host compatibility, its presence is not universal in all necrogenic pathogens. Hemolysins, hemagglutinins, and some adhesins, previously reported only for mammalian pathogens, are present in most organisms discussed. Different numbers and combinations of cell wall degrading enzymes and genes to overcome the oxidative burst generally induced by the plant host are characterized in these genomes. A total of 19 genes not involved in housekeeping functions were found common to all these bacteria.
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Affiliation(s)
- M A Van Sluys
- Depto de Botânica, Instituto de Biociências, Universidade de São Paulo, Brazil.
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Abstract
Inactivating mutations of TP53, a tumor suppressor gene, are associated with abnormal cell proliferation. Although p53 expression is common in many human malignancies, p53 protein has seldom been evaluated in pituitary tumors. When detected, the percentage of p53-positive cells is low, and, in general, it is exclusive for invasive lesions. The aim of the present study was to use immunohistochemistry to determine the presence of p53 protein in pituitary adenomas from tumor samples of 163 surgeries performed in 148 patients (40% male, 60% female). In 35% of the cases the adenoma was nonfunctional, while in the others it was associated with PRL, GH and/or ACTH endocrine hypersecretion syndrome. Macroadenomas were observed in 83.2% of the cases with available neuroimage evaluation, of which 28% invaded the cavernous, sphenoid and/or ethmoidal sinus, bone, third ventricle or subfrontal lobe. p53 protein was detected in 2/148 patients (1.3%). Immunohistochemistry was positive for PRL and GH in these cases. Due to the high percentage of invasive pituitary adenomas found in our study, the low frequency of p53 detection suggests that it is inadequate as a routine marker for aggressiveness and as a predictive factor of tumor behavior.
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Affiliation(s)
- M C Oliveira
- Departamento de Endocrinologia, Fundação Faculdade Federal de Ciências Médicas de Porto Alegre e Irmandade Santa Casa de Misericórdia de Porto Alegre, Dona Mimi Moro 40, 90480-050 Porto Alegre, RS, Brazil.
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Sichieri R, Oliveira MC, Pereira RA. High prevalence of hypertension among Black and Mulatto women in a Brazilian survey. Ethn Dis 2002; 11:412-8. [PMID: 11572407] [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: 02/21/2023] Open
Abstract
STUDY OBJECTIVES Brazil has a high admixture of Blacks and Whites, making it possible to compare the prevalence of hypertension among Blacks, Whites, and Mulattos. DESIGN A population-based health and nutrition survey was carried out in 1996 in the city of Rio de Janeiro, Brazil. Blood pressure, weight, height, food frequency information, and skin color were obtained from a sample of 2,802 private household residents aged 20 years or older. MAIN OUTCOME MEASURE Hypertension was defined as systolic blood pressure >140 mm Hg and/or diastolic pressure >90 mm Hg or the use of antihypertensive medication. RESULTS The prevalence of hypertension among men was 12.0% among Whites, 13.8% among Mulattos, and 14.4% for Blacks. For women, these prevalences were 12.0%, 16.4%, and 20.2%, respectively. After adjustment for age, calcium and salt intake, physical activity level, body mass index, and waist-hip ratio, we observed (among women only) a trend toward increasing prevalence of hypertension with increasing skin darkness. The adjusted odds ratio of hypertension was 1.52 for Mulatto women compared to Whites and 2.27 for Blacks compared to Whites (P<.05). With further adjustment for income, the odds ratios were reduced to 1.30 (95% CI 0.86-1.95) and 1.75 (95% CI 1.04-2.94). CONCLUSIONS Black women showed increased risk of hypertension independent of socioeconomic factors or overweight status.
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Affiliation(s)
- R Sichieri
- Department of Epidemiology, State University of Rio de Janeiro, Brazil.
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Billis A, Carvalho RB, Mattos AC, Negretti F, Nogueira CR, Oliveira MC, Valença JT, Adam RL, Cotta AC, Nunes MS, Dinamarco PV. Tumor grade heterogeneity in urothelial bladder carcinoma--proposal of a system using combined numbers. Scand J Urol Nephrol 2001; 35:275-9. [PMID: 11676351 DOI: 10.1080/003655901750425837] [Citation(s) in RCA: 17] [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] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
OBJECTIVE There is no consensus for grading when more than one grade is present in bladder carcinoma. We propose a grading system that considers the primary (most common) and secondary (second most common) grade of bladder cancer. Grade was correlated with stage of the tumors. MATERIAL AND METHODS We studied 293 bladder transurethral resections or radical cystectomies. Grade was considered as 1, 2 or 3 according to the 1999 World Health Organization system. The number was repeated when only one grade was seen. A final score was obtained which ranged from 2 to 6. All cases were also graded according to the highest grade area even if it was focal. RESULTS According to the highest grade area, the distribution was 80 (74.07%), 27 (25.00%) and 1 (0.92%) for grade 1; 31 (24.03%), 69 (53.48%) and 29 (22.48%) for grade 2; and 0 (0%), 17 (30.35%) and 39 (69.64%) for grade 3, corresponding to the stages Ta, T1 and T2-T3, respectively. Using the system of combined numbers, grade 2 was stratified into subgroups 1 + 2 and 2 + 2 which are statistically different (p < 0.05) when considering stage. In grade 3, there was also a trend for statistical difference (p = 0.066) between grades 2 + 3 and 3 + 3. CONCLUSIONS The grading system of combined numbers, stratifies grade 2 into subgroups 1 + 2 and 2 + 2, and grade 3 into subgroups 2 + 3 and 3 + 3 which are statistically different when considering stage. This grading system of combined numbers takes into consideration tumor heterogeneity and may be of value in prospective studies for analysis of prognosis and therapeutic response.
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Affiliation(s)
- A Billis
- Department of Pathology, School of Medicine, State University of Campinas, Brazil.
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Müller KM, Oliveira MC, Sheath RG, Bhattacharya D. Ribosomal DNA phylogeny of the Bangiophycidae (Rhodophyta) and the origin of secondary plastids. Am J Bot 2001; 88:1390-1400. [PMID: 21669670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We sequenced the nuclear small subunit ribosomal DNA coding region from 20 members of the Bangiophycidae and from two members of the Florideophycidae to gain insights into red algal evolution. A combined alignment of nuclear and plastid small subunit rDNA and a data set of Rubisco protein sequences were also studied to complement the understanding of bangiophyte phylogeny and to address red algal secondary symbiosis. Our results are consistent with a monophyletic origin of the Florideophycidae, which form a sister-group to the Bangiales. Bangiales monophyly is strongly supported, although Porphyra is polyphyletic within Bangia. Bangiophycidae orders such as the Porphyridiales are distributed over three independent red algal lineages. The Compsopogonales sensu stricto, consisting of two freshwater families, Compsopogonaceae and Boldiaceae, forms a well-supported monophyletic grouping. The single taxon within the Rhodochaetales, Rhodochaete parvula, is positioned within a cluster containing members of the Erythropeltidales. Analyses of Rubisco sequences show that the plastids of the heterokonts are most closely related to members of the Cyanidiales and are not directly related to cryptophyte and haptophyte plastid genomes. Our results support the independent origins of these secondary algal plastids from different members of the Bangiophycidae.
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Affiliation(s)
- K M Müller
- Department of Botany and Dean's Office, University of Guelph, Guelph, Ontario, Canada, N1G 2W1
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Oliveira MC, Esperança P, Almoster Ferreira MA. Characterisation of anthocyanidins by electrospray ionisation and collision-induced dissociation tandem mass spectrometry. Rapid Commun Mass Spectrom 2001; 15:1525-1532. [PMID: 11544588 DOI: 10.1002/rcm.400] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The present study describes the use of electrospray ionisation mass spectrometry, in combination with collision-induced dissociation (CID) and tandem mass spectrometry, for the structural characterisation of anthocyanidins and their O-glycosides. The high-energy CID spectra of [M-Cl](+) ions of the free aglycones show characteristic fragmentation pathways, which provide useful information about the substitution pattern in the A- and B-rings of each compound. The major fragmentation observed in the high-energy CID spectra of [M-Cl](+) ions of anthocyanins involves loss of the mono- or disaccharide units resulting in ions containing only the aglycone moiety. From the spectral data, the identity of the aglycone can be established as well as the number and the class of monosaccharide units in the O-glycosides.
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Affiliation(s)
- M C Oliveira
- Center for Mass Spectrometry, Department of Chemistry and Biochemistry, FCUL, Ed. C8, Campo Grande, 1749-016 Lisboa, Portugal
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Abstract
Polar and apolar columns were tested for the chromatographic analysis of tobacco alkaloids. Disadvantages of polar-based polyethylene glycol phases are reported, such as the adsorption of the nornicotine alkaloid and the occurrence of errors on quantitation of alkaloids due to the presence of interfering compounds in tobacco extracts. A chromatographic method using a new apolar base-modified phase was evaluated for the analysis of alkaloids in tobacco products. The nicotine and other major alkaloids were quantitated using two internal standards simultaneously.
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Bhattacharya D, Oliveira MC. The SSU rDNA coding region of a filose amoeba contains a group I intron lacking the universally conserved G at the 3'-terminus. J Eukaryot Microbiol 2000; 47:585-9. [PMID: 11128712 DOI: 10.1111/j.1550-7408.2000.tb00094.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We sequenced small subunit ribosomal DNA (rDNA) PCR-fragments of sizes 2.3 kb and 2.9 kb isolated from a culture of the red alga, Porphyra spiralis var. spiralis. Phylogenetic analysis of the 2.3-kb fragment showed that it encoded the sequence of a contaminant filose amoeba. The Nuclearia-like amoeba (named strain N-Por) was identified with scanning electron microscopy. Its rDNA sequence was positioned with strong bootstrap support within a diverse protist assemblage that includes filose amoebae, chlorarachniophytes, cercomonads, and Plasmodiophora brassicae. The rDNA of N-Por contained a group I intron at the conserved 943 position that remarkably, had a U at the 3'-terminus rather than the universally conserved G.
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Affiliation(s)
- D Bhattacharya
- University of Iowa, Department of Biological Sciences, Iowa City 52242-1324, USA.
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Reis FJ, Oliveira MC, Penna FJ, das GR Oliveira M, Oliveira EA, Monteiro AP. [Clinical and nutritional aspects in patients with cystic fibrosis: 20 years of follow-up in the Clinical Hospital-Federal University of Minas Gerais (HC-UFMG)]. Rev Assoc Med Bras (1992) 2000; 46:325-30. [PMID: 11175567 DOI: 10.1590/s0104-42302000000400031] [Citation(s) in RCA: 4] [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
BACKGROUND Cystic fibrosis (CF) is the most common severe autosomal recessive disease in caucasian population. The life expectancy of patients with CF has improved dramatically during the past three decades. A better approach to these patients depends on a better knowledge of clinical course and prognosis of CF. The purpose of the present study was to identify aspects clinical and nutritional on admission at Center of CF (HC-UFMG). MATERIAL AND METHODS Over a period of 20 years 127 patients with CF were admitted, submitted to a systematic protocol and prospectively followed. Data associated with demographic conditions, clinical presentation, nutritional and laboratory findings on admission were studied. The median follow-up was 44 months. The genotype was performed by PCR method. The survival analysis was carried out by Kaplan-Meier method. RESULTS The median age at diagnosis was 33 months. Sixty-one per cent of patients at diagnosis had chronic pulmonary and gastrointestinal symptoms. Seventeen patients (16%) were homozygous for DF508 mutation and 30 (28%) were heterozygous. There was a standard prevalence of malnutrition of 63% at diagnosis and of 45% at the end of follow up. Twenty patients (15,7%) died during follow up. The estimated probability of survival after one year from diagnosis was 96% and after five years was 80%. CONCLUSIONS CF diagnosis has been later in our country and the survival is shorter than in developed countries. Management of cystic fibrosis in pediatric specializing centers results in a better nutritional state in spite of clinical progression of the disease.
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Affiliation(s)
- F J Reis
- Departamento de Pediatria, Unidade de Pneumologia Pediátrica do Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG
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Abstract
Psychological symptoms, specially anxiety and depression, have been associated to hyperprolactinemia. To evaluate the presence of these symptoms, 32 patients (5 men and 27 women) with hyperprolactinemia of several etiologies and 15 individuals with normal prolactin levels were submitted to the Composed International Diagnostic Interview, followed by the Hamilton rating scale for depression. The serum prolactin, at the time of evaluation, ranged between 28 and 180 ng/mL. Eleven patients were receiving bromocriptine. The presence of anxiety was detected in 18 patients (56.2%) and 5 controls (32.2%), depression was detected in 10 patients (31.2%) and 2 controls (12.5%), dysthymia in 2 patients and other psychiatric diagnosis in 6 patients (18.7%). The scores of depression ranged between 16 and 31 for the patients, and were 12 and 16 for the controls. The frequency of psychiatric symptoms, as a whole, was significantly higher in the hyperprolactinemic patients (chi-square test), but the difference was not significant in isolated analysis of anxiety and depression. The hyperprolactinemia represents a risk of 3.52 for depression, 3.32 for anxiety and 3.84 for other psychiatric symptoms. There was no significant difference in the frequency of psychiatric symptoms among patients with or without pituitary adenomas nor users or not users of bromocriptine. There was no correlation (r=0,07) between prolactin and the frequency of psychiatric symptoms. These results emphasize the importance of a special attention to the concomitance of hyperprolactinemia and psychiatric disturbance, which will allow a specific therapeutic approach.
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Affiliation(s)
- M C Oliveira
- Fundação Faculdade Federal de Ciências Médicas, Santa Casa de Misericórdia de Porto Alegre.
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Abstract
The question of whether vascular endothelial growth factor (VEGF) is expressed in the GH3 cell line was investigated using immunocytochemistry, immunoelectron microscopy, and Western blotting. Using immunocytochemistry, VEGF was demonstrated in approximately 90% of the cells. Immunopositivity was localized mainly in the paranuclear Golgi region. In a small minority of cells, diffuse cytoplasmic immunostaining was also noted. By immunoelectron microscopy VEGF was evident in the secretory granules, cytoplasmic vesicles, rough endoplasmic reticulum, and the Golgi apparatus. Western blotting confirmed the results of the morphologic studies. It can be concluded that VEGF, which is know to induce angiogenesis and to increase vascular permeability, is produced in the prolactin- and growth hormone (GH)-secreting GH3 cell line. The functional role of VEGF in the GH3 cells is unknown. It is possible that this growth factor affects endocrine activity of GH3 cells by a paracrine mechanism.
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Affiliation(s)
- S Vidal
- Department of Anatomy, Campus Universitario de Lugo, University of Santiago de Compostela, Spain.
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