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Araújo GMS, Walcher DL, Previtali IF, Lehman LM, Costa MP, Susin LO, Avila LFC, Scaini CJ. Frequency of enteroparasitic infections and serum positivity for Toxocara spp. in children from a public day care center in Southern Brazil. BRAZ J BIOL 2020; 80:305-310. [PMID: 31291402 DOI: 10.1590/1519-6984.200952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 02/12/2019] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION Day care centers play an important social role in children's early education and development. The objective of this study was to investigate the frequency of intestinal parasitic infections and infection with Toxocara spp. in children from a day care center in the city of Rio Grande, Rio Grande do Sul, Brazil. Methods: The study was conducted using fecal samples from 50 children, ages three to six years, using Ritchie, Faust, Rugai, and Kinyoun's techniques. A closed and structured epidemiological questionnaire was used to collect data from the parents/guardians of the children. Serological studies for detection of antibodies to Toxocara spp. by immunoenzymatic assays using Toxocara excretion and secretion antigen (TES) were conducted on sera collected from 41 children. Results: The frequency of enteroparasites was 18%, with 43.9% of the children testing seropositive for Toxocara spp. Low family income and low literacy levels of parents/guardians were common factors between the families of the parasite-positive children. For the children who tested positive for Toxocara spp., most of the parents/guardians reported using only water for sanitizing raw vegetables and fruits. Conclusions: The high seropositivity rates for Toxocara spp. indicate that children were exposed to this parasite, and it is important to reduce the risk of infection. In addition, the seropositivity for enteroparasites and the interviews with the parents/guardians indicate the need to educate the studied population regarding the modes of intestinal parasite transmission and the prophylactic measures needed to prevent their dissemination.
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Affiliation(s)
- G M S Araújo
- Laboratório de Parasitologia, Programa de Pós-graduação em Ciências da Saúde, Área Interdisciplinar de Ciências Biomédicas, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá, 102, Centro, CEP , Rio Grande, RS, Brasil
| | - D L Walcher
- Programa de Pós-graduação em Parasitologia, Departamento de Microbiologia e Parasitologia, Universidade Federal de Pelotas - UFPel, Campus Universitário Capão do Leão, CEP , Capão do Leão, RS, Brasil
| | - I F Previtali
- Laboratório de Parasitologia, Programa de Pós-graduação em Ciências da Saúde, Área Interdisciplinar de Ciências Biomédicas, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá, 102, Centro, CEP , Rio Grande, RS, Brasil
| | - L M Lehman
- Laboratório de Parasitologia, Programa de Pós-graduação em Ciências da Saúde, Área Interdisciplinar de Ciências Biomédicas, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá, 102, Centro, CEP , Rio Grande, RS, Brasil
| | - M P Costa
- Área de Pediatria, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá, 102, Centro, CEP , Rio Grande, RS, Brasil
| | - L O Susin
- Área de Pediatria, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá, 102, Centro, CEP , Rio Grande, RS, Brasil
| | - L F C Avila
- Laboratório de Parasitologia, Programa de Pós-graduação em Ciências da Saúde, Área Interdisciplinar de Ciências Biomédicas, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá, 102, Centro, CEP , Rio Grande, RS, Brasil
| | - C J Scaini
- Laboratório de Parasitologia, Programa de Pós-graduação em Ciências da Saúde, Área Interdisciplinar de Ciências Biomédicas, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá, 102, Centro, CEP , Rio Grande, RS, Brasil
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Fallace P, Aiese P, Bianco E, Bolognini I, Costa MP, Esposito R, Gallé F, Liguori G, Pandolfi R, Pasquarella C, Savino G, Valeriani F, Romano Spica V. Peer Education strategies for promoting prevention of doping in different populations. Ann Ig 2019; 31:556-575. [PMID: 31616900 DOI: 10.7416/ai.2019.2316] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND In the field of doping prevention, alongside the traditional functions of repression and control of the phenomenon, educational aspects are becoming increasingly important. Article 18 of the World Anti doping Code obliges the signatories to invest in anti-doping education with the aim of preserving the spirit of sport. The educational commitment should involve young people in health promotion interventions for the prevention of risk behaviors. Therefore, our attention has focused on finding the mechanisms that lead people to make certain behavioral choices. MATERIAL AND METHODS In the context of preventive programs, to counter the doping phenomenon through health promotion programs, the most recognized method is peer education, particularly with adolescents. It is an educational method according to which some members of a group are empowered and trained to carry out specific activities with their peers. It is constituted as an example of equal relationship and finds its basis in cooperation and solidarity with the aim of increasing empowerment and a healthy development of the identity and collective dimension in young people. RESULTS Numerous experts - biologists / nutritionists, hygienists, sports coaches, psychologists, teachers of physical education in secondary schools and other stakeholders have actively participated in the co-construction of a training package aimed at activating cascade training processes on the knowledge and skills of peer education in contexts of youth aggregation, such as schools, gyms, sports associations, social gatherings of all kinds. The path allowed to define a peer education model capable of enabling the participants to activate health promotion interventions for the prevention of doping risk behaviors, each in their own setting. CONCLUSIONS In conclusion, we can say that prevention programs are the more effective the more they are addressed to young people and adolescents and provide interactive and action-oriented interventions. Successful initiatives aim to emphasize the development of life skills and to influence numerous determinants of behavior, including individual attitudes, knowledge, motivations, interpersonal relationships and social norms. If the aim is to act on the change of behavior, the efforts will be more successful if the content of the intervention will give due consideration to the context in which it applies and the target population, involving it and addressing its specific needs and values.
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Affiliation(s)
- P Fallace
- Prevention Department, ASL Napoli 2 Nord, Frattamaggiore, Italy - WDPP, Working Group Doping Prevention Project
| | - P Aiese
- Prevention Department, ASL Napoli 2 Nord, Frattamaggiore, Italy
| | - E Bianco
- Prevention Department, ASL Napoli 2 Nord, Frattamaggiore, Italy
| | - I Bolognini
- Prevention Department, ASL Napoli 2 Nord, Frattamaggiore, Italy
| | - M P Costa
- Prevention Department, ASL Napoli 2 Nord, Frattamaggiore, Italy
| | - R Esposito
- Prevention Department, ASL Napoli 2 Nord, Frattamaggiore, Italy
| | - F Gallé
- Department of Motor and Wellness Sciences, University of Naples "Parthenope", Naples, Italy
| | - G Liguori
- Department of Motor and Wellness Sciences, University of Naples "Parthenope", Naples, Italy - WDPP, Working Group Doping Prevention Project
| | - R Pandolfi
- Prevention Department, ASL Napoli 2 Nord, Frattamaggiore, Italy
| | - C Pasquarella
- Department of Medicine and Surgery, University of Parma, Italy - WDPP, Working Group Doping Prevention Project
| | - G Savino
- Ausl Modena and Antidoping Regional Center, Emilia-Romagna Region, Italy - WDPP, Working Group Doping Prevention Project
| | - F Valeriani
- Department of Movement, Human, and Health Sciences, University of Rome "Foro Italico", Rome, Italy
| | - V Romano Spica
- Department of Movement, Human, and Health Sciences, University of Rome "Foro Italico", Rome, Italy - WDPP, Working Group Doping Prevention Project
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Costa MP, Feitosa ACS, Oliveira FCE, Cavalcanti BC, Dias GG, Caetano EWS, Sales FAM, Freire VN, Di Fiore S, Fischer R, Ladeira LO, da Silva Júnior EN, Pessoa C. Encapsulation of nor-β-lapachone into poly(d,l)-lactide- co-glycolide (PLGA) microcapsules: full characterization, computational details and cytotoxic activity against human cancer cell lines. Medchemcomm 2017; 8:1993-2002. [PMID: 30108718 DOI: 10.1039/c7md00196g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 09/06/2017] [Indexed: 11/21/2022]
Abstract
In this work, we characterize nor-β-lapachone-loaded (NβL-loaded) microcapsules prepared using an emulsification/solvent extraction technique. Features such as surface morphology, particle size distribution, zeta potential, optical absorption, Raman and Fourier transform infrared spectra, thermal analysis data, drug encapsulation efficiency, drug release kinetics and in vitro cytotoxicity were studied. Spherical microcapsules with a size of 1.03 ± 0.46 μm were produced with an encapsulation efficiency of approximately 19%. Quantum DFT calculations were also performed to estimate typical interaction energies between a single nor-β-lapachone molecule and the surface of the microparticles. The NβL-loaded PLGA microcapsules exhibited a pronounced initial burst release. After the in vitro treatment with NβL-loaded microcapsules, a clear phagocytosis of the spheres was observed in a few minutes. The cytotoxic activity against a set of cancer cell lines was investigated.
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Affiliation(s)
- Marcília P Costa
- Pharmacy Course , Federal University of Piauí , 64049-550 Teresina , PI , Brazil
| | - Anderson C S Feitosa
- Department of Physiology and Pharmacology , Federal University of Ceará , 60430-270 Fortaleza , CE , Brazil .
| | - Fátima C E Oliveira
- Department of Physiology and Pharmacology , Federal University of Ceará , 60430-270 Fortaleza , CE , Brazil .
| | - Bruno C Cavalcanti
- Department of Physiology and Pharmacology , Federal University of Ceará , 60430-270 Fortaleza , CE , Brazil .
| | - Gleiston G Dias
- Institute of Exact Sciences , Department of Chemistry , Federal University of Minas Gerais , Belo Horizonte , 31270-901 , MG , Brazil . ; Tel: +55 31 34095720
| | - Ewerton W S Caetano
- Department of Secondary School and Teachers College , Federal Institute of Ceará , 60040-531 Fortaleza , CE , Brazil.,Federal Institute of Ceará , 63503-790 Iguatu , CE , Brazil
| | - Francisco A M Sales
- Department of Secondary School and Teachers College , Federal Institute of Ceará , 60040-531 Fortaleza , CE , Brazil.,Federal Institute of Ceará , 63503-790 Iguatu , CE , Brazil
| | - Valder N Freire
- Department of Physics , Federal University of Ceará , 60455-760 Fortaleza , CE , Brazil
| | - Stefano Di Fiore
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME , 52074 , Aachen , Germany
| | - Rainer Fischer
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME , 52074 , Aachen , Germany.,Institute for Molecular Biotechnology , RWTH Aachen University , 52074 Aachen , Germany
| | - Luiz O Ladeira
- Institute of Exact Sciences , Department of Physics , Federal University of Minas Gerais , Belo Horizonte , 31270-901 , MG , Brazil
| | - Eufrânio N da Silva Júnior
- Institute of Exact Sciences , Department of Chemistry , Federal University of Minas Gerais , Belo Horizonte , 31270-901 , MG , Brazil . ; Tel: +55 31 34095720
| | - Claudia Pessoa
- Department of Physiology and Pharmacology , Federal University of Ceará , 60430-270 Fortaleza , CE , Brazil . .,Oswaldo Cruz Foundation (Fiocruz) , 60180-900 Fortaleza , CE , Brazil
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Souza GR, Oliveira-Junior RG, Diniz TC, Branco A, Lima-Saraiva SRG, Guimarães AL, Oliveira AP, Pacheco AGM, Silva MG, Moraes-Filho MO, Costa MP, Pessoa CÓ, Almeida JRGS. Assessment of the antibacterial, cytotoxic and antioxidant activities of Morus nigra L. (Moraceae). BRAZ J BIOL 2017; 78:248-254. [PMID: 28832831 DOI: 10.1590/1519-6984.05316] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 12/14/2016] [Indexed: 11/22/2022] Open
Abstract
This study was carried out to assess the antibacterial, cytotoxic and antioxidant activities of extracts of Morus nigra L. HPLC was used to determine the fingerprint chromatogram of the crude ethanolic extract (Mn-EtOH). The antibacterial effect was assessed through the method of microdilution. The cytotoxicity was tested against human tumour cell lines using the 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. The total phenolic and flavonoid contents were also assessed through the Folin-Ciocalteu and aluminum chloride methods, respectively. Antioxidant activities of the extracts were evaluated by using 2,2-diphenyl-1-picrylhydrazil (DPPH) radical scavenging and β-carotene-linoleic acid bleaching methods. The presence of phenolic compounds in Mn-EtOH was confirmed using HPLC. The extracts showed activity against most microorganisms tested. The extracts did not show any expressive antiproliferative effect in the assessment of cytotoxicity. The most significant total phenolic content was 153.00 ± 11.34 mg of gallic acid equivalent/g to the ethyl acetate extract (AcOEt). The total flavonoid content was 292.50 ± 70.34 mg of catechin equivalent/g to the AcOEt extract, which presented the best antioxidant activity (IC50 50.40 ± 1.16 μg/mL) for DPPH scavenging. We can conclude that this species shows strong antibacterial and antioxidant activities, as well as weak cytotoxic effects.
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Affiliation(s)
- G R Souza
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - R G Oliveira-Junior
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - T C Diniz
- Programa de Pós-graduação em Biotecnologia, Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brazil
| | - A Branco
- Programa de Pós-graduação em Biotecnologia, Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brazil
| | - S R G Lima-Saraiva
- Programa de Pós-graduação em Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | - A L Guimarães
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - A P Oliveira
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - A G M Pacheco
- Programa de Pós-graduação em Biotecnologia, Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brazil
| | - M G Silva
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
| | - M O Moraes-Filho
- Laboratório Nacional de Oncologia Experimental, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - M P Costa
- Laboratório Nacional de Oncologia Experimental, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - C Ó Pessoa
- Laboratório Nacional de Oncologia Experimental, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza, CE, Brazil
| | - J R G S Almeida
- Núcleo de Estudos e Pesquisas de Plantas Medicinais, Universidade Federal do Vale do São Francisco, Petrolina, PE, Brazil
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Silva MGE, De Oliveira AP, Araújo CDS, De Lavor ÉM, Silva JC, Mendes RL, Pessoa CDÓ, Costa MP, Da S Almeida JRG. Phytochemical screening, cytotoxicity and acute toxicity of Annona vepretorum Mart (Annonaceae) leaf extracts. TROP J PHARM RES 2017. [DOI: 10.4314/tjpr.v16i3.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Oliveira AP, Guimarães AL, Pacheco AGM, Araújo CS, Oliveira Júnior RG, Lavor ÉM, Silva MG, Araújo ECC, Mendes RL, Rolim LA, Costa MP, Farias HCL, Pessoa CDÓ, Lopes NP, Marques LMM, Almeida JRGS. PHYTOCHEMICAL STUDY ON ANTIMICROBIAL AND CYTOTOXIC ACTIVITY OF SPECIMENS OF Leonotis nepetifoliaL. R. (Br). QUIM NOVA 2015. [DOI: 10.5935/0100-4042.20150160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Costa MP, Ferreira MC, Soares JM, Rossi AGZ, Baracat EC. Minimally invasive mastectomy: minimal incisions for better aesthetic quality of breast reconstruction. EUR J GYNAECOL ONCOL 2012; 33:155-158. [PMID: 22611954] [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: 06/01/2023]
Abstract
BACKGROUND Women with a family history of breast cancer who develop this disease are confronted with important situations regarding the increased risk for development of a second cancer in the contralateral breast. Prophylactic contralateral mastectomy (PCM) reduces by approximately 95% the risk for contralateral breast cancer. In spite of an increase in indications for PCM, the technical difficulties are many regarding the accomplishment of these procedures. The aim of this study is to describe the technique of mastectomy with preservation of the nipple-areola complex and a small incision, reducing surgical difficulties and complications attributed to this technique, thus allowing better aesthetic results in breast reconstruction. METHODS Forty-six patients with indications for PCM (28 bilateral) were submitted to minimally invasive mastectomy from March 2005 to November 2007. A small incision in the superior pole of the areola, sufficient to pass a liposuction 4 mm cannula is made. With the help of this cannula, detachment of the skin from the gland tissue is performed. Then a 3.5 to 4.5-cm long incision in the inframammary fold is made. Glandular detachment is completed using cautery in the subglandular portion and scissors in the upper breast portion cutting the restraints left by the cannula. The mammary gland tissue is removed through this incision. RESULTS Seventy-four breasts were operated on. The resected breast mass ranged from 285 g to 475 g. All 43 patients were reconstructed with prostheses. There was no necrosis of the nipple-areola complex or of the skin. CONCLUSIONS This technique is an option for cases of patients with indications for PCM.
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Affiliation(s)
- M P Costa
- Division of Plastic Surgery, Hospital das Clínicas, University of São Paulo Medical School, Brazil.
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Ruiz JC, D'Afonseca V, Silva A, Ali A, Pinto AC, Santos AR, Rocha AAMC, Lopes DO, Dorella FA, Pacheco LGC, Costa MP, Turk MZ, Seyffert N, Moraes PMRO, Soares SC, Almeida SS, Castro TLP, Abreu VAC, Trost E, Baumbach J, Tauch A, Schneider MPC, McCulloch J, Cerdeira LT, Ramos RTJ, Zerlotini A, Dominitini A, Resende DM, Coser EM, Oliveira LM, Pedrosa AL, Vieira CU, Guimarães CT, Bartholomeu DC, Oliveira DM, Santos FR, Rabelo ÉM, Lobo FP, Franco GR, Costa AF, Castro IM, Dias SRC, Ferro JA, Ortega JM, Paiva LV, Goulart LR, Almeida JF, Ferro MIT, Carneiro NP, Falcão PRK, Grynberg P, Teixeira SMR, Brommonschenkel S, Oliveira SC, Meyer R, Moore RJ, Miyoshi A, Oliveira GC, Azevedo V. Evidence for reductive genome evolution and lateral acquisition of virulence functions in two Corynebacterium pseudotuberculosis strains. PLoS One 2011; 6:e18551. [PMID: 21533164 PMCID: PMC3078919 DOI: 10.1371/journal.pone.0018551] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Accepted: 03/11/2011] [Indexed: 02/02/2023] Open
Abstract
Background Corynebacterium pseudotuberculosis, a Gram-positive, facultative intracellular pathogen, is the etiologic agent of the disease known as caseous lymphadenitis (CL). CL mainly affects small ruminants, such as goats and sheep; it also causes infections in humans, though rarely. This species is distributed worldwide, but it has the most serious economic impact in Oceania, Africa and South America. Although C. pseudotuberculosis causes major health and productivity problems for livestock, little is known about the molecular basis of its pathogenicity. Methodology and Findings We characterized two C. pseudotuberculosis genomes (Cp1002, isolated from goats; and CpC231, isolated from sheep). Analysis of the predicted genomes showed high similarity in genomic architecture, gene content and genetic order. When C. pseudotuberculosis was compared with other Corynebacterium species, it became evident that this pathogenic species has lost numerous genes, resulting in one of the smallest genomes in the genus. Other differences that could be part of the adaptation to pathogenicity include a lower GC content, of about 52%, and a reduced gene repertoire. The C. pseudotuberculosis genome also includes seven putative pathogenicity islands, which contain several classical virulence factors, including genes for fimbrial subunits, adhesion factors, iron uptake and secreted toxins. Additionally, all of the virulence factors in the islands have characteristics that indicate horizontal transfer. Conclusions These particular genome characteristics of C. pseudotuberculosis, as well as its acquired virulence factors in pathogenicity islands, provide evidence of its lifestyle and of the pathogenicity pathways used by this pathogen in the infection process. All genomes cited in this study are available in the NCBI Genbank database (http://www.ncbi.nlm.nih.gov/genbank/) under accession numbers CP001809 and CP001829.
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Affiliation(s)
- Jerônimo C. Ruiz
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Vívian D'Afonseca
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Artur Silva
- Department of Genetics, Federal University of Pará, Belém, Pará, Brazil
| | - Amjad Ali
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Anne C. Pinto
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Anderson R. Santos
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Aryanne A. M. C. Rocha
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Débora O. Lopes
- Health Sciences Center, Federal University of São João Del Rei, Divinópilis, Minas Gerais, Brazil
| | - Fernanda A. Dorella
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Luis G. C. Pacheco
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Department of Biointeraction Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Marcília P. Costa
- Department of Veterinary Medicine, State University of Ceará, Fortaleza, Ceará, Brazil
| | - Meritxell Z. Turk
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Núbia Seyffert
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Pablo M. R. O. Moraes
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Siomar C. Soares
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sintia S. Almeida
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Thiago L. P. Castro
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Vinicius A. C. Abreu
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Eva Trost
- Department of Genetics, University of Bielefeld, CeBiTech, Bielefeld, Nordrhein-Westfale, Germany
| | - Jan Baumbach
- Department of Computer Science, Max-Planck-Institut für Informatik, Saarbrücken, Saarlan, Germany
| | - Andreas Tauch
- Department of Genetics, University of Bielefeld, CeBiTech, Bielefeld, Nordrhein-Westfale, Germany
| | | | - John McCulloch
- Department of Genetics, Federal University of Pará, Belém, Pará, Brazil
| | | | | | - Adhemar Zerlotini
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Anderson Dominitini
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Daniela M. Resende
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
- Department of Pharmaceutical Sciences, Federal University of Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Elisângela M. Coser
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Luciana M. Oliveira
- Department of Phisics, Federal University of Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - André L. Pedrosa
- Department of Pharmaceutical Sciences, Federal University of Ouro Preto, Ouro Preto, Minas Gerais, Brazil
- Department of Biological Sciences, Federal University of Triangulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Carlos U. Vieira
- Department of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Cláudia T. Guimarães
- Brazilian Agricultural Research Corporation (EMBRAPA), Sete Lagoas, Minas Gerais, Brazil
| | - Daniela C. Bartholomeu
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Diana M. Oliveira
- Department of Veterinary Medicine, State University of Ceará, Fortaleza, Ceará, Brazil
| | - Fabrício R. Santos
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Élida Mara Rabelo
- Department of Parasitology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Francisco P. Lobo
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Glória R. Franco
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ana Flávia Costa
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ieso M. Castro
- Department of Pharmacy, Federal University of Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Sílvia Regina Costa Dias
- Department of Parasitology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Jesus A. Ferro
- Department of Technology, State University of São Paulo, Jaboticabal, São Paulo, Brazil
| | - José Miguel Ortega
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Luciano V. Paiva
- Department of Chemistry, Federal University of Lavras, Lavras, Minas Gerais, Brazil
| | - Luiz R. Goulart
- Department of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Juliana Franco Almeida
- Department of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Maria Inês T. Ferro
- Department of Technology, State University of São Paulo, Jaboticabal, São Paulo, Brazil
| | - Newton P. Carneiro
- Brazilian Agricultural Research Corporation (EMBRAPA), Sete Lagoas, Minas Gerais, Brazil
| | - Paula R. K. Falcão
- Brazilian Agricultural Research Corporation (EMBRAPA), Campinas, São Paulo, Brazil
| | - Priscila Grynberg
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Santuza M. R. Teixeira
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sérgio Brommonschenkel
- Department of Plant Pathology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - Sérgio C. Oliveira
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Roberto Meyer
- Department of Biointeraction Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | | | - Anderson Miyoshi
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Guilherme C. Oliveira
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
- Center of Excellence in Bioinformatics, National Institute of Science and Technology, Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Vasco Azevedo
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- * E-mail:
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9
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Gomes AM, Costa LL, Vilela DAR, Marques MVR, Carvalhaes AG, Marin SY, Costa MP, Horta RS, Resende JS, Martins NRS. Detection of Mycoplasma gallisepticum in dead captive psittacines in Belo Horizonte, Brazil. Rev Bras Cienc Avic 2010. [DOI: 10.1590/s1516-635x2010000200001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | - DAR Vilela
- Instituto Brasileiro de Meio Ambiente e Recursos Naturais Renováveis
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10
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Diniz MC, Costa MP, Pacheco ACL, Kamimura MT, Silva SC, Carneiro LDG, Sousa APL, Soares CEA, Souza CSF, de Oliveira DM. Actin-interacting and flagellar proteins in Leishmania spp.: Bioinformatics predictions to functional assignments in phagosome formation. Genet Mol Biol 2009; 32:652-65. [PMID: 21637533 PMCID: PMC3036044 DOI: 10.1590/s1415-47572009000300033] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2009] [Accepted: 05/25/2009] [Indexed: 11/22/2022] Open
Abstract
Several motile processes are responsible for the movement of proteins into and within the flagellar membrane, but little is known about the process by which specific proteins (either actin-associated or not) are targeted to protozoan flagellar membranes. Actin is a major cytoskeleton protein, while polymerization and depolymerization of parasite actin and actin-interacting proteins (AIPs) during both processes of motility and host cell entry might be key events for successful infection. For a better understanding the eukaryotic flagellar dynamics, we have surveyed genomes, transcriptomes and proteomes of pathogenic Leishmania spp. to identify pertinent genes/proteins and to build in silico models to properly address their putative roles in trypanosomatid virulence. In a search for AIPs involved in flagellar activities, we applied computational biology and proteomic tools to infer from the biological meaning of coronins and Arp2/3, two important elements in phagosome formation after parasite phagocytosis by macrophages. Results presented here provide the first report of Leishmania coronin and Arp2/3 as flagellar proteins that also might be involved in phagosome formation through actin polymerization within the flagellar environment. This is an issue worthy of further in vitro examination that remains now as a direct, positive bioinformatics-derived inference to be presented.
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Affiliation(s)
- Michely C Diniz
- Núcleo Tarcísio Pimenta de Pesquisa Genômica e Bioinformática, Universidade Estadual do Ceará, Fortaleza, CE Brazil
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11
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Barrios PR, Marín SY, Resende M, Rios RL, Resende JS, Horta RS, Costa MP, Martins NRS. Occurrence of chicken anemia virus in backyard chickens of the metropolitan region of Belo Horizonte, Minas Gerais. Rev Bras Cienc Avic 2009. [DOI: 10.1590/s1516-635x2009000200010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- PR Barrios
- Universidade Federal de Lavras; Universidade Federal de Minas Gerais
| | - SY Marín
- Universidade Federal de Minas Gerais
| | - M Resende
- Universidade Federal de Minas Gerais
| | - RL Rios
- Universidade Federal de Minas Gerais
| | | | - RS Horta
- Universidade Federal de Minas Gerais
| | - MP Costa
- Universidade Federal de Minas Gerais
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12
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Gouveia JJS, Vasconcelos EJR, Pacheco ACL, Araújo-Filho R, Maia ARS, Kamimura MT, Costa MP, Viana DA, Costa RB, Maggioni R, Oliveira DM. Intraflagellar transport complex in Leishmania spp. In silico genome-wide screening and annotation of gene function. Genet Mol Res 2007; 6:766-798. [PMID: 18058704] [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: 05/25/2023]
Abstract
Flagella are constructed and maintained through the highly conserved process of intraflagellar transport (IFT), which is a rapid movement of particles along the axonemal microtubules of cilia/flagella. Particles that are transported by IFT are composed of several protein subunits comprising two complexes (A and B), which are conserved among green algae, nematodes, and vertebrates. To determine whether or not homologues to members of the IFT complex proteins are conserved in Leishmania spp, we scanned genomes, transcriptomes and proteomes of Leishmania species in a search for putative IFT factors, which were then identified in silico, compared, cataloged, and characterized. Since a large proportion of newly identified genes in L. major remain unclassified, with many of these being potentially Leishmania- (or kinetoplastid-) specific, there is a need for detailed analyses of homologs/orthologs that could help us understand the functional assignment of these gene products. We used a combination of integrated bioinformatics tools in a pathogenomics approach to contribute to the annotation of Leishmania genomes, particularly regarding flagellar genes and their roles in pathogenesis. This resulted in the formal in silico identification of eight of these homologs in Leishmania (IFT subunits, 20, 27, 46, 52, 57, 88, 140, and 172), along with others (IFTs 71, 74/72, and 81), as well as sequence comparisons and structural predictions. IFT, an important flagellar pathway in Leishmania, begins to be revealed through screening of trypanosomatid genomes; this information could also be used to better understand fundamental processes in Leishmania, such as motility and pathogenesis.
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Affiliation(s)
- J J S Gouveia
- Núcleo de Genômica e Bioinformática, Faculdade de Veterinária, Universidade Estadual do Ceará, Fortaleza, CE, Brasil
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13
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Signorelli SS, Sciacchitano S, Di Pino L, Costa MP, Pennisi G, Caschetto S. Effects of long-term hormone replacement therapy on arterial wall thickness, lipids and lipoproteins, fibrinogen and antithrombin III. Gynecol Endocrinol 2001; 15:367-72. [PMID: 11727359 DOI: 10.1080/gye.15.5.367.372] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
We aimed to study the effects of hormone replacement therapy (HRT) in menopausal women on lipoproteins, blood coagulation, arterial blood pressure and markers of atherosclerosis. A total of 186 postmenopausal women were studied; 98 used HRT (0.625 mg 17 beta-estradiol plus 10 mg progestin) and were followed for 48 months, and were matched with 98 women without therapy. Low-density lipoproteins, high-density lipoproteins, triglycerides, antithrombin III, systolic and diastolic arterial pressure and intima-media thickness were measured at 6, 12, 24, 38 and 48 months. In users of HRT, we found a significant reduction of the lipoproteins, triglycerides, systolic and diastolic pressures and intima-media thickness; however, we found an increase in high-density lipoproteins and anthitrombin III in comparison with non-users. This study has shown a protective effect of HRT on such risk factors and on certain markers of atherosclerosis.
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Affiliation(s)
- S S Signorelli
- Department of Internal Medicine A. Francaviglia, Angiology Unit, Faculty of Medicine, University of Catania, Sicily, Italy
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14
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Signorelli SS, Neri S, Sciacchitano S, Di Pino L, Costa MP, Pennisi G, Ierna D, Caschetto S. Duration of menopause and behavior of malondialdehyde, lipids, lipoproteins and carotid wall artery intima-media thickness. Maturitas 2001; 39:39-42. [PMID: 11451619 DOI: 10.1016/s0378-5122(01)00174-8] [Citation(s) in RCA: 25] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
AIM our study assessed whether minor or major hormonal deficiency influenced oxidative status and vascular wall structure in menopausal women. METHODS the study series was made up of 62 non hypertensive non diabetic menopausal women (mean age 52.3+/-4.7 years) divided into two groups depending on duration of menopause (group 1 duration 0-5 years; group 2 duration over 5 years). Total cholesterol (TC), LDL cholesterol (LDL-C), HDL-cholesterol (HDL-C), triglycerides (TG), malondialdehyde (MDA) and common carotid artery wall intima-media thickness (IMT) were determined in the entire series. RESULTS mean TC, LDL-C, TG, MDA and IMT values were higher in group 2 than group 1. The intergroup difference between MDA (P<0.007) and IMT values (P<0.006) values was statistically significant. CONCLUSIONS the study revealed a close temporal correlation between plasma oxidative stress and carotid wall IMT, jeopardizes vascular wall status as menopause proceeds.
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Affiliation(s)
- S S Signorelli
- Department of Internal Medicine, A Francaviglia--Angiology Unit, Via Firenze No. 123, 95020 Acicastello, Italy.
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15
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Signorelli SS, Malaponte MG, Di Pino L, Costa MP, Pennisi G, Mazzarino MC. Venous stasis causes release of interleukin 1beta (IL-1beta), interleukin 6 (IL-6) and tumor necrosis factor alpha (TNFalpha) by monocyte-macrophage. Clin Hemorheol Microcirc 2001; 22:311-6. [PMID: 11081468] [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: 02/18/2023]
Abstract
BACKGROUND many studies have investigated between venous stasis, functions of the vascular and perivascular anastomotic structure, venous endothelium and circulating leukocytes. SETTING patients with varicose veins (n = 15) and a healthy control group (n = 15). METHODS the authors investigated some soluble mediators of monocytes-macrophages, which induce inflammation. They determined interleukin 1beta (IL-1beta) and interleukin 6 (IL-6) and tumor necrosis factor alpha (TNFalpha) levels at rest and after induced venous occlusion (using an inflated cuff to 60 mmHg for 25 minutes). RESULTS their results revealed elevated baseline production in the former and that induced venous occlusion further augmented the levels of all cytokines in the study series, especially in patients with varicose veins. CONCLUSION The authors believe that the study shows functional activation of monocyte-macrophages related to venous stasis as a consequence of venous hypertension. Cell response damages the endothelial structure and may represent an important element in the pathophysiology of chronic venous insufficiency.
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Affiliation(s)
- S S Signorelli
- Department of Internal Medicine A. Francaviglia, Angiology Unit, Faculty of Medicine, University of Catania, Italy.
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16
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Signorelli SS, Neri S, Di Pino L, Costa MP, Pennisi G, Digrandi D, Ierna D. Oxidative stress and endothelial damage in patients with asymptomatic carotid atherosclerosis. Clin Exp Med 2001; 1:9-12. [PMID: 11467406 DOI: 10.1007/s10238-001-8002-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
It is known that oxidative stress can be able to induce cytotoxicity of blood cells, stimulate release of inflammatory cytokines, and induce the production of growth factors. The aim of this study was to investigate oxidative stress and endothelial dysfunction in patients with asymptomatic carotid artery disease and healthy controls. Native low-density lipoproteins, oxidised low-density lipoproteins, malondialdehyde, nitrates, glutathione peroxidase activity and endothelin-1 were determined in patients without severe (range between 30% and 50%) carotid artery stenosis. Native low-density lipoproteins, oxidized low-density lipoproteins, malondialdehyde, glutathione peroxydase, and endothelin-1 concentrations were higher in patients than in health controls (P<0.001). No difference was observed in nitrate values (P<0.8). Our results revealed oxidative stress in patients without severe carotid artery stenosis and clinical symptoms. This was shown by the elevated malondialdehyde and oxidized low-density lipoprotein levels.
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Affiliation(s)
- S S Signorelli
- Department of Internal Medicine, "A. Francaviglia" University of Catania, Italy.
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Signorelli SS, Sciacchitano S, Costa MP, Di Pino L, Pennnisi G, Caschetto S. Behaviour of the carotid wall in menopausal women with and without arterial hypertension. Maturitas 2000; 35:39-43. [PMID: 10802398 DOI: 10.1016/s0378-5122(00)00098-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE A study was conducted on the carotid vascular wall to evaluate its behaviour in postmenopausal women suffering from arterial hypertension compared to normotensive postmenopausal women. METHOD Intima-media thickness(IMT) of carotid artery was determined by ecoduplex scanner in 182 postmenopausal women (age range 40-60 years) divided in four age classes (40-45, 46-50, 51-55, 55-60 years). Ninety-one women presented normal arterial blood pressure (SBP 136.6+/-11.7 and DBP 82.3+/-8.9 mmHg) and 91 were hypertensive (SBP 172.6+/-11.7 and DBP 97.4+/-6.6 mmHg). RESULTS The normotensive women presented the following IMT values: 1.19+/-0.21 mm (40-45 years), 1.21+/-0.25 mm (46-50 years), 1.25+/-0.20 mm (51-55 years), 1.25+/-0.20 mm (55-60 years). IMT values in hypertensive women were: 1.75+/-0.25 mm (40-45 years), 1.77+/-0.30 mm (45-50 years), 1.91+/-0.28 mm (51-55 years), 2.02+/-0.33 mm (55-60 years). ANOVA test was performed in both groups of women and did not show any significant difference in the four age classes of normotensive women. On the other hand it revealed a statistical significance between 40-45 and 46-50-year-old hypertensive classes (P<0.001) and between 51-55 and 55-60-year-old hypertensive clases (P<0.02). CONCLUSIONS There was a correlation between age and IMT in the arterial hypertensives, especially in two older classes, and between the duration of menopause and IMT values. The results indicated that carotid wall thickening was constantly higher in hypertensive women compared with normotensive ones.
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Affiliation(s)
- S S Signorelli
- Department of Internal Medicine 'A. Francaviglia' - Faculty of Medicine, University of Catania, Italy
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18
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Signorelli SS, Buttò G, Riggio F, Pennisi G, Martini R, Di Pino L, Costa MP, Andreozzi GM. [Changes in cerebral vasomotor reactivity in relation to respiratory and metabolic stimuli: an analysis of its behavior in hypertensive and normotensive subjects]. Clin Ter 1996; 147:469-74. [PMID: 9264899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We know that increases in the arterial blood pressure determines changes in the behaviour of the cerebrovascular resistance and also the possible lack of vasomotor reactivity. In order to clarify the pathway of circulatory vasomotor reactivity in arterial hypertension, we carried out a study on a group of hypertensive subjects (20 patients) who were compared to a group of normotensive controls (18 patients). A transcranial doppler (TCD) study was performed with rebreathing tests (apnea and hyperventilation) and it was carried out in both groups of subjects. The TCD was repeated after an administration of sublingual pill of nitroglycerin. In both groups the hyperventilation caused a significant reduction in the velocity peak in the middle cerebral artery (norm.: 84.88 +/- 4.86 cm/sec 60 +/- 5.2 cm/sec; hyperten. 84.50 +/- 7.1 cm/sec 58.80 +/- 5.47 cm/sec) in contrast apnea induced a major increase in the velocities (norm.: 84.88 +/- 4.86 cm/sec 102.50 +/- 4.89 cm/sec; hyperten.: 84.50 +/- 7.1 cm/sec 101.59 +/- 10.6 cm/sec). We noticed a statistical significant difference between the velocities recorded in the different tests (Anova test p < 0.0001). The behaviour of the velocities in the rebreathing tests after nitroglycerin was similar when compared to the same test were performed without the drug. This study suggests that there is no difference in the behaviour of the cerebral reactivity between normotensives and the hypertensive subjects without vascular or cardiac compliance. Finally we would emphasize the role of TCD in the recording changes of cerebrovascular resistances due to pressure or metabolic causes.
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Affiliation(s)
- S S Signorelli
- Istituto di Medicina Interna A. Francaviglia, Università degli Studi di Catania
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19
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de Faria JC, Tuma Júnior P, Costa MP, Quagliano AP, Ferreira MC. [Skin aging and collagen]. Rev Hosp Clin Fac Med Sao Paulo 1995; 50 Suppl:39-43. [PMID: 7659928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The Aging process is a dynamic and unchangeable phenomenon which affects all systems in the body. In the skin, the old appearance is represented by wrinkles and sagging and results from structural alterations on the molecular level. Modifications in collagen, the most important protein of the connective tissue, era responsible for these anatomic changes. The investigation of the qualitative and quantitative distribution of the collagen fibrils has been very useful for understanding the structural and functional alterations that occur during the aging process. The modulation of this phenomenon will only be possible if we understand its physiopathology.
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Affiliation(s)
- J C de Faria
- Disciplina de Cirurgia Plástica, Faculdade de Medicina, Universidade de São Paulo
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20
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Malatino LS, Bellofiore S, Costa MP, Lo Manto G, Finocchiaro F, Di Maria GU. Cerebral blood flow velocity after hyperventilation-induced vasoconstriction in hypertensive patients. Stroke 1992; 23:1728-32. [PMID: 1448822 DOI: 10.1161/01.str.23.12.1728] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND AND PURPOSE The aim of our study was to evaluate by transcranial Doppler ultrasonography the dynamics of blood flow velocity changes in the middle cerebral artery during and after hypocapnia-induced vasoconstriction in untreated essential hypertensive patients. METHODS Sixteen hypertensive patients (10 men and six women, 29-62 years of age) and 10 healthy control subjects (six men and four women, 30-62 years of age) were studied. Patients with mild-to-moderate essential hypertension (mean +/- SE blood pressure, 171/106 +/- 3/2 mm Hg) belonged to stage I or II of the World Health Organization classification. Mean blood flow velocity in the middle cerebral artery, arterial blood pressure, and end-tidal CO2 partial pressure were recorded at baseline, during 2-minute hyperventilation, and every 30 seconds up to 5 minutes after hyperventilation. RESULTS End-tidal CO2 partial pressure values overlapped in the two groups throughout the study. Baseline values of mean blood flow velocity in hypertensive patients were similar to those in normotensive subjects (mean +/- SE values, 64.7 +/- 3.9 cm/sec versus 58.6 +/- 3.7 cm/sec). A similar fall in mean blood flow velocity was observed in hypertensive patients and normotensive subjects (43.2 +/- 2.8% versus 46.7 +/- 3.6%). Mean blood flow velocity reverted to baseline more quickly in hypertensive patients: 1.5 minutes after hyperventilation, mean blood flow velocity was 60.7 +/- 3.1% and 84.9 +/- 1.8% of control in normotensive subjects and hypertensive patients, respectively. No changes in arterial blood pressure were observed in either group throughout the study. CONCLUSIONS This study demonstrates that the recovery of blood flow velocity in the middle cerebral artery after hyperventilation is faster in hypertensive patients than in normal subjects, thus providing further evidence that chronic hypertension is associated with changes in the dynamics of cerebral blood vessel reactivity.
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Affiliation(s)
- L S Malatino
- Istituto di Clinica Medica, University of Catania, Italy
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21
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Malatino LS, Bellofiore S, Costa MP, Lo Manto G, Finocchiaro F, Di Maria GU. Intracranial blood flow after hypocapnia-induced vasoconstriction in patients with essential hypertension. J Hypertens Suppl 1991; 9:S130-1. [PMID: 1818911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- L S Malatino
- Istituto di Clinica Medica, University of Catania, Italy
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Abstract
A study was carried out in 1988, using a random sample of 1,441 pupils attending the elementary and high schools of the Federal District, Brazil, with the purpose of determining the frequency of the use of alcohol, tobacco and other drugs. A self-administered questionnaire, adapted by the World Health Organization for this type of survey, was applied. The prevalence of general usage (covering everything from experimental to daily use) showed rates of 67.2% for alcohol, 28.7% for tobacco, 13.9% for inhalants, 6.1% for marijuana and 1.8% for cocaine. The use of the majority of drugs increases with age. As regards sex, the illegal drugs were mostly frequently used by boys.
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Affiliation(s)
- A M Godoi
- Departamento de Medicina Social da Faculdade de Medicina de Ribeirão Preto Universidade de São Paulo, Brasil
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23
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Di Giovanni S, Giallonardo P, Costa MP, Carducci P. [Clinical, hematologic and developmental characteristics of myelodysplastic syndromes. Study of a group of patients with a long-term follow-up]. Recenti Prog Med 1987; 78:63-8. [PMID: 3473582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
MESH Headings
- Aged
- Anemia, Refractory/blood
- Anemia, Refractory/complications
- Anemia, Refractory/diagnosis
- Anemia, Refractory, with Excess of Blasts/blood
- Anemia, Refractory, with Excess of Blasts/complications
- Anemia, Refractory, with Excess of Blasts/diagnosis
- Anemia, Sideroblastic/blood
- Anemia, Sideroblastic/complications
- Anemia, Sideroblastic/diagnosis
- Diagnosis, Differential
- Female
- Follow-Up Studies
- Humans
- Leukemia, Myeloid/blood
- Leukemia, Myeloid/complications
- Leukemia, Myeloid/diagnosis
- Male
- Middle Aged
- Myelodysplastic Syndromes/blood
- Myelodysplastic Syndromes/complications
- Myelodysplastic Syndromes/diagnosis
- Time Factors
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Armengol-Miro JR, Ramentol F, Salord J, Costa MP, Palacin A, Vidal MT. Lymphangioma of the oesophagus. Diagnosis and treatment by endoscopic polypectomy. Endoscopy 1979; 11:185-9. [PMID: 488015 DOI: 10.1055/s-0028-1098349] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Finding a lymphangioma in the upper digestive tract is a rather infrequent event. A case of a 64-year-old man is reported. Diagnosis was made in the course of an endoscopic oesophagogastroduodenal examination and tumor excision with a diathermy snare at the same time. Two years after resection there was no sign of recidivation of the tumor.
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