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Rosa LS, Santos ML, Abreu JP, Rocha RS, Esmerino EA, Freitas MQ, Mársico ET, Campelo PH, Pimentel TC, Cristina Silva M, Souza AA, Nogueira FCS, Cruz AG, Teodoro AJ. Probiotic fermented whey-milk beverages: Effect of different probiotic strains on the physicochemical characteristics, biological activity, and bioactive peptides. Food Res Int 2023; 164:112396. [PMID: 36737979 DOI: 10.1016/j.foodres.2022.112396] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/14/2022] [Accepted: 12/24/2022] [Indexed: 12/29/2022]
Abstract
The effect of probiotic strains (Lactobacillus acidophilus La-03 (La-03); Lactobacillus acidophilus La-05 (La-05); Bifidobacterium Bb-12 (Bb-12) or Lacticaseibacillus casei-01 (L. casei-01)) on the characteristics of fermented whey-milk beverages during storage (4 °C, 30 days) was evaluated. The products were assessed for biological and antioxidant activities, physicochemical characteristics, and bioactive peptides. Probiotic addition increased α-amylase and α-glucosidase inhibition and antioxidant activities, mainly at 15 days of storage. L. casei-01 showed higher metabolic activity (higher titratable acidity and lower pH values) and the presence of anti-hypertensive peptides, while La-5 and Bb-12 showed higher α-glucosidase inhibition, improvements in the high saturated hypercholesterolemic index, and peptides with ACE-inhibitory, antimicrobial, immunomodulatory, and antioxidant activities. Our findings suggest that probiotic fermented whey-milk beverages may exert antidiabetic and antioxidant properties, being suggested La-5 or Bb-12 as probiotics and 15 days of storage.
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Affiliation(s)
- Lana S Rosa
- Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Laboratório de Alimentos Funcionais, Rio de Janeiro 22290-240, Brazil
| | - Mariana L Santos
- Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Laboratório de Alimentos Funcionais, Rio de Janeiro 22290-240, Brazil
| | - Joel P Abreu
- Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Laboratório de Alimentos Funcionais, Rio de Janeiro 22290-240, Brazil
| | - Ramon S Rocha
- Universidade Federal Fluminense (UFF), Faculdade de Veterinária, Niterói 24230-340, Brazil; Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Departamento de Alimentos, Rio de Janeiro 20270-021, Brazil
| | - Erick A Esmerino
- Universidade Federal Fluminense (UFF), Faculdade de Veterinária, Niterói 24230-340, Brazil
| | - Monica Q Freitas
- Universidade Federal Fluminense (UFF), Faculdade de Veterinária, Niterói 24230-340, Brazil
| | - Eliane T Mársico
- Universidade Federal Fluminense (UFF), Faculdade de Veterinária, Niterói 24230-340, Brazil
| | - Pedro H Campelo
- Universidade Federal de Viçosa, Departamento de Tecnologia de Alimentos, Viçosa 36570-900, Brazil
| | | | - Márcia Cristina Silva
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Departamento de Alimentos, Rio de Janeiro 20270-021, Brazil
| | - Adrieli A Souza
- Universidade Federal do Rio de Janeiro (UFRJ), Laboratório de Proteomica (LADETEC), 21941-598, Rio de Janeiro, Brazil
| | - Fabio C S Nogueira
- Universidade Federal do Rio de Janeiro (UFRJ), Laboratório de Proteomica (LADETEC), 21941-598, Rio de Janeiro, Brazil
| | - Adriano G Cruz
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro (IFRJ), Departamento de Alimentos, Rio de Janeiro 20270-021, Brazil
| | - Anderson J Teodoro
- Universidade Federal Fluminense (UFF), Faculdade de Nutrição, Niterói 24020-140, Brazil.
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Marcó N, Souza AA, Nolis P, Gil RR, Parella T. Perfect 1J CH-resolved HSQC: Efficient measurement of one-bond proton-carbon coupling constants along the indirect dimension. J Magn Reson 2017; 276:37-42. [PMID: 28092787 DOI: 10.1016/j.jmr.2017.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 12/30/2016] [Accepted: 01/01/2017] [Indexed: 06/06/2023]
Abstract
A versatile 1JCH-resolved HSQC pulse scheme for the speedy, accurate and automated determination of one-bond proton-carbon coupling constants is reported. The implementation of a perfectBIRD element allows a straightforward measurement from the clean doublets obtained along the highly resolved F1 dimension, even for each individual 1JCHa and 1JCHb in diastereotopic HaCHb methylene groups. Real-time homodecoupling during acquisition and other alternatives to minimize accidental signal overlapping in overcrowded spectra are also discussed.
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Affiliation(s)
- N Marcó
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Catalonia, Spain
| | - A A Souza
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Catalonia, Spain; Departamento de Química, Universidade Federal do Piauí, 64049-550 Teresina, PI, Brazil
| | - P Nolis
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Catalonia, Spain
| | - R R Gil
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA, USA
| | - T Parella
- Servei de Ressonància Magnètica Nuclear, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Catalonia, Spain.
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Oliveira AE, Iwahara A, Silva CJ, Cruz PAL, Poledna R, Silva RL, Laranjeira AS, Delgado JU, Tauhata L, Loureiro JS, Toledo BC, Braghirolli AMS, Andrade EAL, Silva JL, Hernandes HOK, Valente ES, Dalle HM, Almeida VM, Silva TG, Fragoso MCF, Oliveira ML, Nascimento ESS, Oliveira EM, Herrerias R, Souza AA, Bambalas E, Bruzinga WA. Traceability from governmental producers of radiopharmaceuticals in measuring (18)F in Brazil. Appl Radiat Isot 2015; 109:236-241. [PMID: 26688362 DOI: 10.1016/j.apradiso.2015.11.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 11/20/2015] [Indexed: 11/16/2022]
Abstract
Since the inception of its proficiency test program to evaluate radionuclide measurement in hospitals and clinics, the National Metrology Laboratory of Ionizing Radiation-LNMRI, that represents Brazilian National Metrology Institute (NMI) for ionizing radiation has expanded its measurement and calibration capability. Requirements from the National Health Surveillance Agency from Ministry of Health (ANVISA), to producers of radiopharmaceuticals provided an opportunity to improve the full traceability chain to the highest level. Fluorodeoxyglucose (FDG-(18)F) is the only radiopharmaceutical simultaneously produced by all Brazilian radiopharmaceutical production centers (RPCs). By running this proficiency test, LNMRI began to provide them with the required traceability. For evaluation, the ratio of RPC to reference value results and ISO/IEC17043:2010 criteria were used. The reference value established as calibration factor on the secondary standard ionization chamber was obtained from three absolute measurements systems, and routinely confirmed in each round of proficiency test by CIEMAT/NIST liquid scintillation counting. The γ-emitting impurities were checked using a High-Purity Germanium (HPGe) detector. The results show that Brazilian RPCs are in accordance with (accuracy within ±10%) the Brazilian standard for evaluation of measurements with radionuclide calibrators (CNEN NN 3.05., 2013). Nevertheless, the RPCs should improve the methodology of uncertainty estimates, essential when using the statistical criteria of ISO/IEC 17043 standard, in addition to improving accuracy to levels consistent with their position in the national traceability chain.
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Affiliation(s)
- A E Oliveira
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil.
| | - A Iwahara
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - C J Silva
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - P A L Cruz
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - R Poledna
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - R L Silva
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - A S Laranjeira
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - J U Delgado
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - L Tauhata
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - J S Loureiro
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - B C Toledo
- Laboratório Nacional de Metrologia das Radiações Ionizantes (LNMRI)/Instituto de Radioproteção e Dosimetria (IRD)/Comissão Nacional de Energia Nuclear (CNEN), Av. Salvador Allende s/n, 22780-160 Recreio CEP Rio de Janeiro, Brazil
| | - A M S Braghirolli
- Instituto de Engenharia Nuclear (IEN)/Comissão Nacional de Energia Nuclear (CNEN), Cidade Universitária, Ilha do Fundão, ⁎ Caixa Postal 68550, CEP 21945-970 Rio de Janeiro, Brazil
| | - E A L Andrade
- Instituto de Engenharia Nuclear (IEN)/Comissão Nacional de Energia Nuclear (CNEN), Cidade Universitária, Ilha do Fundão, ⁎ Caixa Postal 68550, CEP 21945-970 Rio de Janeiro, Brazil
| | - J L Silva
- Instituto de Engenharia Nuclear (IEN)/Comissão Nacional de Energia Nuclear (CNEN), Cidade Universitária, Ilha do Fundão, ⁎ Caixa Postal 68550, CEP 21945-970 Rio de Janeiro, Brazil
| | - H O K Hernandes
- Instituto de Engenharia Nuclear (IEN)/Comissão Nacional de Energia Nuclear (CNEN), Cidade Universitária, Ilha do Fundão, ⁎ Caixa Postal 68550, CEP 21945-970 Rio de Janeiro, Brazil
| | - E S Valente
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN)/CNEN, Avenida Presidente Antônio Carlos, 6.627-Campus UFMG, CEP 31270-901-Caixa Postal 941, CEP 30161-970 Belo Horizonte, Minas, Brazil
| | - H M Dalle
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN)/CNEN, Avenida Presidente Antônio Carlos, 6.627-Campus UFMG, CEP 31270-901-Caixa Postal 941, CEP 30161-970 Belo Horizonte, Minas, Brazil
| | - V M Almeida
- Centro Regional de Ciências Nucleares (CRCN - NE)/ CNEN, Avenida Professor Luiz Freire, no. 200, Cidade Universitária, CEP: 50.740-545 Recife-PE, Brazil
| | - T G Silva
- Centro Regional de Ciências Nucleares (CRCN - NE)/ CNEN, Avenida Professor Luiz Freire, no. 200, Cidade Universitária, CEP: 50.740-545 Recife-PE, Brazil
| | - M C F Fragoso
- Centro Regional de Ciências Nucleares (CRCN - NE)/ CNEN, Avenida Professor Luiz Freire, no. 200, Cidade Universitária, CEP: 50.740-545 Recife-PE, Brazil
| | - M L Oliveira
- Centro Regional de Ciências Nucleares (CRCN - NE)/ CNEN, Avenida Professor Luiz Freire, no. 200, Cidade Universitária, CEP: 50.740-545 Recife-PE, Brazil
| | - E S S Nascimento
- Centro Regional de Ciências Nucleares (CRCN - NE)/ CNEN, Avenida Professor Luiz Freire, no. 200, Cidade Universitária, CEP: 50.740-545 Recife-PE, Brazil
| | - E M Oliveira
- Instituto de Pesquisas Energéticas e Nucleares (IPEN)/CNEN, Caixa Postal 11049, CEP 05422-970 São Paulo, Brazil
| | - R Herrerias
- Instituto de Pesquisas Energéticas e Nucleares (IPEN)/CNEN, Caixa Postal 11049, CEP 05422-970 São Paulo, Brazil
| | - A A Souza
- Instituto de Pesquisas Energéticas e Nucleares (IPEN)/CNEN, Caixa Postal 11049, CEP 05422-970 São Paulo, Brazil
| | - E Bambalas
- Instituto de Pesquisas Energéticas e Nucleares (IPEN)/CNEN, Caixa Postal 11049, CEP 05422-970 São Paulo, Brazil
| | - W A Bruzinga
- Instituto de Pesquisas Energéticas e Nucleares (IPEN)/CNEN, Caixa Postal 11049, CEP 05422-970 São Paulo, Brazil
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Díez García RW, Souza AA, Proença RPC. Qualifying instrument for evaluation of food and nutritional care in hospital. NUTR HOSP 2012; 27:1170-7. [PMID: 23165559 DOI: 10.3305/nh.2012.27.4.5868] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Accepted: 04/10/2012] [Indexed: 12/01/2022] Open
Abstract
Establishing criteria for hospital nutrition care ensures that quality care is delivered to patients. The responsibility of the Hospital Food and Nutrition Service (HFNS) is not always well defined, despite efforts to establish guidelines for patient clinical nutrition practice. This study describes the elaboration of an Instrument for Evaluation of Food and Nutritional Care (IEFNC) aimed at directing the actions of the Hospital Food and Nutrition Service. This instrument was qualified by means of a comparative analysis of the categories related to hospital food and nutritional care, published in the literature. Elaboration of the IEFNC comprised the following stages: (a) a survey of databases and documents for selection of the categories to be used in nutrition care evaluation, (b) a study of the institutional procedures for nutrition practice at two Brazilian hospitals, in order to provide a description of the sequence of actions that should be taken by the HFNS as well as other services participating in nutrition care, (c) design of the IEFNC based on the categories published in the literature, adapted to the sequence of actions observed in the routines of the hospitals under study, (d) application of the questionnaire at two different hospitals that was mentioned in the item (b), in order to assess the time spent on its application, the difficulties in phrasing the questions, and the coverage of the instrument, and (e) finalization of the instrument. The IEFNC consists of 50 open and closed questions on two areas of food and nutritional care in hospital: inpatient nutritional care and food service quality. It deals with the characterization and structure of hospitals and their HFNS, the actions concerning the patients' nutritional evaluation and monitoring, the meal production system, and the hospital diets. "This questionnaire is a tool that can be seen as a portrait of the structure and characteristics of the HFNS and its performance in clinical and meal management dietitian activities."
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Affiliation(s)
- R W Díez García
- Laboratory of Food Practices and Behavior-PrátiCA, Nutrition and Metabolism, Department of Internal Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo, SP, Brazil.
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Ramalho-Ortigão JM, Pitaluga AN, Telleria EL, Marques C, Souza AA, Traub-Cseko YM. Cloning and characterization of a V-ATPase subunit C from the American visceral leishmaniasis vector Lutzomyia longipalpis modulated during development and blood ingestion. Mem Inst Oswaldo Cruz 2008; 102:509-15. [PMID: 17607496 DOI: 10.1590/s0074-02762007000400013] [Citation(s) in RCA: 6] [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] [Received: 12/08/2006] [Accepted: 03/07/2007] [Indexed: 11/22/2022] Open
Abstract
Visceral leishmaniasis (VL) is a serious tropical disease that affects approximately 500 thousand people worldwide every year. In the Americas, VL is caused by the parasite Leishmania (Leishmania) infantum chagasi mainly transmitted by the bite of the sand fly vector Lutzomyia longipalpis. Despite recent advances in the study of interaction between Leishmania and sand flies, very little is known about sand fly protein expression profiles. Understanding how the expression of proteins may be affected by blood feeding and/or presence of parasite in the vector's midgut might allow us to devise new strategies for controlling the spread of leishmaniasis. In this work, we report the characterization of a vacuolar ATPase subunit C from L. longipalpis by screening of a midgut cDNA library with a 220 bp fragment identified by means of differential display reverse transcriptase-polymerase chain reaction analysis. The expression of the gene varies along insect development and is upregulated in males and bloodfed L. longipalpis, compared to unfed flies.
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Affiliation(s)
- J M Ramalho-Ortigão
- Laboratório de Biologia Molecular de Tripanossomatídios e Flebotomíneos, Departamento de Bioquímica e Biologia Molecular, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, 21045-900, Brasil
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Coletta-Filho HD, Takita MA, Souza AA, Neto JR, Destéfano SAL, Hartung JS, Machado MA. Primers based on the rpf gene region provide improved detection of Xanthomonas axonopodis pv. citri in naturally and artificially infected citrus plants. J Appl Microbiol 2006; 100:279-85. [PMID: 16430504 DOI: 10.1111/j.1365-2672.2005.02787.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [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: 11/27/2022]
Abstract
AIMS To have a PCR-based detection method for Xanthomonas axonopodis pv. citri (Xac) using primers designed in a specific region of its genome. METHODS AND RESULTS A Xac-specific region was identified inside the rpf gene cluster of strain IAPAR 306 in an analysis of its complete genomic sequence. Two primers were designed, Xac01 and Xac02, which, when used in a standard PCR assay, direct the amplification of a 581 bp fragment from DNA of strains belonging to Xac from different regions around the world including unusual American and Asian strains. This product was not observed when DNA from strains of the closely related X. a. aurantifolli and X. a. citrumelo were used as templates. Extracts prepared from 28 xanthomonads of other species, and epiphytic bacteria isolated from citrus also failed to produce products with these primers. Amplification was obtained from cells grown in vitro, from extracts of both fresh and dried citrus canker lesions and from washes of inoculated but asymptomatic leaf surfaces. In sensitivity tests, this PCR technique detected as few as 100 cells. CONCLUSIONS Primers Xac01 and Xac02 provide specific and sensitive detection of Xac in all citrus tissues where the pathogen is found. SIGNIFICANCE AND IMPACT OF THE STUDY This PCR-based diagnostic test is suitable for monitoring asymptomatic plants in areas where the bacteria is endemic, in plant quarantine and regulatory situations, and also for obtaining an accurate diagnosis in a very short time. These are important characteristics for any assay to be used for the management of citrus canker disease.
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Affiliation(s)
- H D Coletta-Filho
- Centro APTA Citros Sylvio Moreira, Instituto Agronômico de Campinas, Cordeiropolis, SP, Brazil.
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Locali-Fabris EC, Freitas-Astúa J, Souza AA, Takita MA, Astúa-Monge G, Antonioli-Luizon R, Rodrigues V, Targon MLPN, Machado MA. Complete nucleotide sequence, genomic organization and phylogenetic analysis of Citrus leprosis virus cytoplasmic type. J Gen Virol 2006; 87:2721-2729. [PMID: 16894213 DOI: 10.1099/vir.0.82038-0] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The complete nucleotide sequence of the genomic RNA 1 (8745 nt) and RNA 2 (4986 nt) of Citrus leprosis virus cytoplasmic type (CiLV-C) was determined using cloned cDNA. RNA 1 contains two open reading frames (ORFs), which correspond to 286 and 29 kDa proteins. The 286 kDa protein is a polyprotein putatively involved in virus replication, which contains four conserved domains: methyltransferase, protease, helicase and polymerase. RNA 2 contains four ORFs corresponding to 15, 61, 32 and 24 kDa proteins, respectively. The 32 kDa protein is apparently involved in cell-to-cell movement of the virus, but none of the other putative proteins exhibit any conserved domain. The 5′ regions of the two genomic RNAs contain a ‘cap’ structure and poly(A) tails were identified in the 3′-terminals. Sequence analyses and searches for structural and non-structural protein similarities revealed conserved domains with members of the genera Furovirus, Bromovirus, Tobravirus and Tobamovirus, although phylogenetic analyses strongly suggest that CiLV-C is a member of a distinct, novel virus genus and family, and definitely demonstrate that it does not belong to the family Rhabdoviridae, as previously proposed. Based on these results it was proposed that Citrus leprosis virus be considered as the type member of a new genus of viruses, Cilevirus.
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Affiliation(s)
- E C Locali-Fabris
- UNESP, Universidade Estadual Paulista, Instituto de Biociências, Rod. D. Sartori 21-500, Distrito Rubião Jr 18618-000, Botucatu/SP, Brazil
- Centro APTA Citros Sylvio Moreira, IAC, Rod. Anhanguera, Km 158, CP 4, 13490-970 Cordeirópolis/SP, Brazil
| | - J Freitas-Astúa
- EMBRAPA Milho e Sorgo, Rod. MG 424, Km 65, CP 151, 35701-970 Sete Lagoas/MG, Brazil
- Centro APTA Citros Sylvio Moreira, IAC, Rod. Anhanguera, Km 158, CP 4, 13490-970 Cordeirópolis/SP, Brazil
| | - A A Souza
- Centro APTA Citros Sylvio Moreira, IAC, Rod. Anhanguera, Km 158, CP 4, 13490-970 Cordeirópolis/SP, Brazil
| | - M A Takita
- Centro de Recursos Genéticos Vegetais/IAC, CP 28, 13001-970 Campinas/SP, Brazil
- Centro APTA Citros Sylvio Moreira, IAC, Rod. Anhanguera, Km 158, CP 4, 13490-970 Cordeirópolis/SP, Brazil
| | - G Astúa-Monge
- Centro APTA Citros Sylvio Moreira, IAC, Rod. Anhanguera, Km 158, CP 4, 13490-970 Cordeirópolis/SP, Brazil
| | - R Antonioli-Luizon
- Centro APTA Citros Sylvio Moreira, IAC, Rod. Anhanguera, Km 158, CP 4, 13490-970 Cordeirópolis/SP, Brazil
| | - V Rodrigues
- Centro APTA Citros Sylvio Moreira, IAC, Rod. Anhanguera, Km 158, CP 4, 13490-970 Cordeirópolis/SP, Brazil
| | - M L P N Targon
- Centro APTA Citros Sylvio Moreira, IAC, Rod. Anhanguera, Km 158, CP 4, 13490-970 Cordeirópolis/SP, Brazil
| | - M A Machado
- Centro APTA Citros Sylvio Moreira, IAC, Rod. Anhanguera, Km 158, CP 4, 13490-970 Cordeirópolis/SP, Brazil
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Tomé AR, da Silva JC, Souza AA, Mattos JP, Vale MR, Rao VS. Possible involvement of nitric oxide in pilocarpine induced seminal emission in rats. Gen Pharmacol 1999; 33:479-85. [PMID: 10647773 DOI: 10.1016/s0306-3623(99)00046-4] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Intraperitoneal injection of pilocarpine (0.75-3.0 mg/kg) caused a dose-related seminal emission in adult male rats. The seminal emission response to 3 mg/kg of pilocarpine was greatly reduced in atropinized (5 and 10 mg/kg, SC) animals, suggesting a cholinomimetic effect. Nw-nitro-L-arginine methyl ester (5, 10, and 20 mg/kg, SC), a nitric oxide synthesis inhibitor, also inhibited the pilocarpine-induced seminal emission, which was reversed by L-arginine (600 mg/kg, SC) or by coinjection of sodium nitroprusside (0.5 mg/kg, SC). Urine analysis for levels of nitric oxide metabolites, nitrate/nitrite (NO3-/NO2-), showed marked alterations in accordance with the drug treatments. The results suggest that nitric oxide mediates the inhibitory neurotransmission responsible for seminal emission in pilocarpine stimulated rats.
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Affiliation(s)
- A R Tomé
- Department of Physiology and Pharmacology, Faculty of Medicine, Federal University of Ceará, Fortaleza, Brazil
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Mutebi JP, Alexander B, Sherlock I, Wellington J, Souza AA, Shaw J, Rangel EF, Lanzaro GC. Breeding structure of the sand fly Lutzomyia longipalpis (Lutz & Neiva) in Brazil. Am J Trop Med Hyg 1999; 61:149-57. [PMID: 10432072 DOI: 10.4269/ajtmh.1999.61.149] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [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: 11/07/2022] Open
Abstract
Eleven populations of Lutzomyia longipalpis (Lutz & Neiva), the sand fly vector of Leishmania chagasi, from different areas of Brazil were analyzed for genetic variation at 16 enzyme loci. In this region, the prevalence of visceral leishmaniasis (VL) caused by L. chagasi is spotty and reproductive isolation among populations of Lu. longipalpis has been reported. It is thought that morphologically similar cryptic species with varying vectorial capacity may be responsible for the discontinuous distribution of VL. The aim was to study the genetic structure of populations within this region and to identify demes that may represent sibling species. Genotypic frequencies within populations were in close compliance to Hardy-Weinberg expectations, suggesting there are no sympatric species among these 11 populations. Levels of genetic distance between pairs of populations were very low (< 0.03), consistent with local populations within a single sand fly species. When genotypic frequency data for all populations were pooled, 9 of the 13 polymorphic loci deviated from Hardy-Weinberg expectations, indicating some degree of genetic substructuring. Estimates of effective migration rates (N(e)m) among all populations were low, 2.73, suggesting that gene flow is restricted among populations, which is probably the reason for the observed genetic substructuring.
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Affiliation(s)
- J P Mutebi
- Center for Tropical Diseases, Department of Pathology, University of Texas Medical Branch, Galveston 77555-0609, USA
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Rangel EF, Lainson R, Souza AA, Ready P, Azevedo AC. Variation between geographical populations of Lutzomyia (Nyssomyia) whitmani (Antunes & Coutinho, 1939) sensu lato (Diptera:Psychodidae:Phlebotominae) in Brazil. Mem Inst Oswaldo Cruz 1996; 91:43-50. [PMID: 8734947 DOI: 10.1590/s0074-02761996000100007] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.5] [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: 02/01/2023] Open
Abstract
Phylogenetic analysis of morphometric and biological characters indicated that there are two distinct forms of Lutzomyia whitmani in Brazil: one is present both north and south of the River Amazonas in the State of Pará while the other occurs in northeast Brazil, in the State of Ceará, and further south, including the type locality in State of Bahia. The Amazonian form is reportedly neither strongly anthropophilic nor synanthropic, and it is the vector of Leishmania shawi; whereas the southern form is often collected peridomestically, while biting man, and has been found infected with Le.(V.) braziliensis. The ratio of the length of the genital filaments to that the genital pump was found to be consistently smaller in males of the Amazonian populations. A middle repetitive DNA element was isolated by differentially screening a genomic library made using Amazonian material, and the sequence was diagnostic for this form of Lu. whitmani (being absent or occurring in low copy number in the southern form). The total evidence suggests there are at least two, geographically-isolated forms of Lu. whitmani, which may represent different cryptic species.
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Affiliation(s)
- E F Rangel
- Departamento de Entomologia, Instituto Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
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Lainson R, Shaw JJ, Souza AA, Silveira FT, Falqueto A. Further observations on Lutzomyia ubiquitalis (Psychodidae: Phlebotominae), the sandfly vector of Leishmania (Viannia) lainsoni. Mem Inst Oswaldo Cruz 1992; 87:437-9. [PMID: 1343653 DOI: 10.1590/s0074-02761992000300016] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- R Lainson
- Seção de Parasitologia, Instituto Evandro Chagas, Belém, PA, Brasil
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Silveira FT, Souza AA, Lainson R, Shaw JJ, Braga RR, Ishikawa EE. Cutaneous leishmaniasis in the Amazon region: natural infection of the sandfly Lutzomyia ubiquitalis (Psychodidae: Phlebotominae) by Leishmania (Viannia) Lainsoni in Pará State, Brazil. Mem Inst Oswaldo Cruz 1991; 86:127-30. [PMID: 1842393 DOI: 10.1590/s0074-02761991000100021] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2023] Open
Affiliation(s)
- F T Silveira
- Seção de Parasitologia, Instituto Evandro Chagas, Fundação Nacional de Saúde, Belém, PA, Brasil
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Silveira FT, Lainson R, Shaw JJ, Braga RR, Ishikawa EE, Souza AA. [Cutaneous leishmaniasis in Amazonia: isolation of Leishmania (Viannia) lainsoni from the rodent Agouti paca (Rodentia: Dasyproctidae), in the state of Pará, Brazil]. Rev Inst Med Trop Sao Paulo 1991; 33:18-22. [PMID: 1843391 DOI: 10.1590/s0036-46651991000100004] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The isolation of Leishmania (V.) lainsoni is recorded for the first time from a wild animal, the rodent Agouti paca (Rodentia: Dasyproctidae), from Pará State, north Brazil. Isolates of the parasite were made from apparently normal skin of 3 specimens of this rodent captured on the Island of Tocantins, in the municipality of Tucuruí, an area subsequently flooded in the formation of the lake associated with the Tucuruí hydroelectric dam. No isolations were made from the viscera. Identification of the parasite was in each case based on morphology of the amastigotes and promastigotes, behavior of the organism in hamsters, isoenzymes profiles and the use of monoclonal antibodies. The inapparent nature of the infection leads us to suggest that the "paca", Agouti paca, represents a primitive host of L. (V.) lainsoni in the Amazon Region.
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Affiliation(s)
- F T Silveira
- Instituto Evandro Chagas, Seção de Parasitologia (F.N.S.), Belém, Pará, Brasil
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Ready PD, Lainson R, Shaw JJ, Souza AA. DNA probes for distinguishing Psychodopygus wellcomei from Psychodopygus complexus (Diptera:Psychodidae). Mem Inst Oswaldo Cruz 1991; 86:41-9. [PMID: 1842400 DOI: 10.1590/s0074-02761991000100008] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [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: 12/29/2022] Open
Abstract
Genomic DNA fragments from males of Psychodopygus wellcomei were isolated and shown to be useful as sensitive diagnostic probes for positively separating individuals of this species from those of Ps. complexus. These two members of the Ps. squamiventris series are found sympatrically in foci of cutaneous leishmaniasis in the hill forests of southern Pará State. Of the two species, only Ps. wellcomei is thought to be an important vector of Leishmania braziliensis sensu stricto, but this is based on circumstantial evidence because of the difficulties of identifying female sandflies within the series. The diagnostic probes were isolated from a library of Ps. wellcomei built by ligating short fragments of Sau 3A-restricted, genomic DNA into the plasmid vector pUC 18. Differential screening of 1316.library clones with total genomic DNA of Ps. wellcomei and Ps. complexus identified 5 recombinants, with cross-hybridizing inserts of repetitive DNA, that showed strong specificity for Ps. wellcomei. As little as 0.4% of the DNA extracted from an individual sandfly (= ca. 0.5 nanograms) was specifically detected. The diagnostic probes were used to identify as Ps. wellcomei a wild-caught female sandfly found infected with L. braziliensis s.s., providing only the second positive association between these two species.
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Affiliation(s)
- P D Ready
- Entomology Department, Natural History Museum, London, U.K
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Lainson R, Dye C, Shaw JJ, Macdonald DW, Courtenay O, Souza AA, Silveira FT. Amazonian visceral leishmaniasis--distribution of the vector Lutzomyia longipalpis (Lutz & Neiva) in relation to the fox Cerdocyon thous (linn.) and the efficiency of this reservoir host as a source of infection. Mem Inst Oswaldo Cruz 1990; 85:135-7. [PMID: 2215228 DOI: 10.1590/s0074-02761990000100027] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- R Lainson
- Seção de Parasitologia, Instituto Evandro Chagas, Fundação SESP, Belém, PA, Brasil
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Silveira FT, Lainson R, Shaw JJ, Garcez LM, Souza AA, Braga RR, Ishikawa EA. [Experimental skin leishmaniasis: II--course of the infection in the Cebus apella primate (Cebidae) caused by Leishmania (V.) braziliensis and L. (L.) amazonensis]. Rev Soc Bras Med Trop 1990; 23:5-12. [PMID: 2089483 DOI: 10.1590/s0037-86821990000100002] [Citation(s) in RCA: 10] [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: 12/30/2022] Open
Abstract
As a means of assessing the usefulness of the monkey Cebus apella as an experimental model for the study of cutaneous leishmaniasis, 5 of these animals were inoculated intradermally at 8 sites along the tail with 3 X 10(6) promastigotes of L. (V.) braziliensis, while a further 5 monkeys received similar inoculations with 3 X 10(6) promastigotes of L. (L.) amazonensis. Following the inoculations, weekly examinations and monthly biopsies showed evolution of resulting skin lesions to be as follows: a) L. (V.) braziliensis: lesions were first visible 15-20 days post-inoculation (p.i), and at 30 days they were clearly of an erythematous-papular nature, which assumed a nodular form at 60 days; after 3 months a spontaneous ulceration of these lesions was noted and, at 4 months, the initiation of healing. In one animal total healing was apparent 5 months p.i; in two others at 6 months, in another monkey after 7 months, and in the last animal at 10 months p.i. Amastigotes were demonstrated in smears from the lesions of all monkeys up to 90 days p.i; up to 120 days in two animals, and at 180 days p.i. in the monkey which showed resolution of the lesions after 10 months. b) L. (L.) amazonensis lesions were first apparent after 20 days p.i; at 30 days they were of an erythematous-papular nature, developing into nodules at 60 days. From the third month of infection onwards, however, the lesions diminished rapidly and, at 90 days p.i. amastigotes were no longer detectable in the skin.(ABSTRACT TRUNCATED AT 250 WORDS)
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Silveira FT, Lainson R, Shaw JJ, Ishikawa EA, Souza AA, Braga RR. [Sensitivity of the culture of circulating leukocytes in the detection of Leishmania in the peripheral blood of patients with tegumentary leishmaniasis]. Rev Soc Bras Med Trop 1989; 22:143-6. [PMID: 2486526 DOI: 10.1590/s0037-86821989000300006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The possible presence of Leishmania in the peripheral blood of 60 patients with American cutaneous leishmaniasis was investigated by the culture of circulating leucocytes. Patients were selected with a variety of clinical forms of the disease and in different evolutionary stages of infection. Biopsies of skin and/or mucosal lesions were made in order to isolate the parasites, which were identified using monoclonal antibodies. 40 isolations were obtained, including 5 of Leishmania (Viannia) braziliensis, 3 L. (V.) guyanesis, 1 L. (V.) lainsoni, 13 L. (Leishmania) amazonensis and 18 which could only be identified as parasites of the braziliensis complex. Cultures of circulanting leucocytes were consistently negative, and the authors conclude that this method is of little use in diagnosis of cutaneous or mucocutaneous leishmaniasis.
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Silveira FT, Lainson R, Shaw JJ, Garcez LM, Souza AA, Braga RR, Ishikawa EA. [Experimental cutaneous leishmaniasis: I--on the susceptibility of the primate Cebus apella (Cebidae) to the infection caused by Leishmania (Viannia) lainsoni Silveira, Shaw and Ishikawa, 1987]. Rev Soc Bras Med Trop 1989; 22:125-30. [PMID: 2486523 DOI: 10.1590/s0037-86821989000300003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The susceptibility of the monkey Cebus apella (Cebidae) to experimental infection by Leishmania (Viannia) lainsoni has been investigated. For this purpose, five young monkeys, 2 males and 3 females, were intradermally, inoculated, in eight different places along the dorsal surface of the tail with 3 x 10(6) promastigotes of the parasite (MHOM/BR/81/M6426, Benevides, Pará), from stationary phase culture in Difco B45 medium. After inoculations, infection in the monkeys was indicated by the presence of amastigotes in the skin lesions produced in these animals at the points of inoculation, confirming the susceptibility of the monkey Cebus apella to experimental infection by Leishmania lainsoni, with an infection period of four months. This represents a suitable period for testing antileishmanial drugs or studying the pathogenesis of the disease caused by this parasite.
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Lainson R, Shaw JJ, Braga RR, Ishikawa EA, Souza AA, Silveira FT. Isolation of Leishmania from monkeys in the Amazon Region of Brazil. Trans R Soc Trop Med Hyg 1988; 82:231. [PMID: 3142112 DOI: 10.1016/0035-9203(88)90424-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- R Lainson
- Wellcome Parasitology Unit, Instituto Evandro Chagas, F. SESP, Belém, Pará, Brazil
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