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Thaumaturgo N, Souza CRF, Fialho TJNA, Liarth RS, Oliveira AP, Guimarães D, Felix VS, Pimenta AR, Oliveira ALC, Oliveira MB, Oliveira MA, Ferreira DSR, Freitas RP. Analysis of brazilian paintings of the 20th century: Suspects and authentics through in situ and Non-Invasive techniques. Spectrochim Acta A Mol Biomol Spectrosc 2024; 304:123431. [PMID: 37748336 DOI: 10.1016/j.saa.2023.123431] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 09/09/2023] [Accepted: 09/18/2023] [Indexed: 09/27/2023]
Abstract
This work studied suspicious and authentic artworks by Brazilian painters Ivan Serpa, Ismael Nery, and Iberê Camargo by XRF, FTIR, OM, and MA-XRF techniques. The studies made it possible to verify that all suspicious artworks are counterfeit artifacts. The analyses were conducted in situ, and different approaches were applied for data treatment. For example, principal component analysis and spectral deconvolution were performed on the XRF data. From these methods, it was possible to verify that the suspect artworks by Ivan Serpa and Iberê Camargo have different materiality than the authentic paintings. Additionally, MA-XRF images did not reveal the presence of a polychrome preparation layer in the suspicious paintings by Ivan Serpa. The suspect artworks from Ismael Nery exhibited a Ca-K/Ti-K ratio that indicates they were created on a low-quality paper support, which is not suitable for paintings. The differences in materials used in the suspicious and authentic artworks are further supported by the FTIR and OM results. In addition to the physicochemical analysis, the paintings were studies graphotechnical examinations, financial evaluations, and artistic analyses that demonstrated they were counterfeit artifacts. The results of the analysis demonstrate how physicochemical techniques can contribute to the forensic investigation of paintings. However, this work highlights the importance of applying distinct treatments to the XRF data in order to accentuate the differences between the suspect and authentic artworks.
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Affiliation(s)
- N Thaumaturgo
- Instituto de Criminalística Carlos Éboli, Departamento Geral de Polícia Técnico-Científica, Rio de Janeiro (RJ), Brasil
| | - C R F Souza
- Instituto de Criminalística Carlos Éboli, Departamento Geral de Polícia Técnico-Científica, Rio de Janeiro (RJ), Brasil
| | - T J N A Fialho
- Instituto de Criminalística Carlos Éboli, Departamento Geral de Polícia Técnico-Científica, Rio de Janeiro (RJ), Brasil
| | - R S Liarth
- Instituto de Criminalística Carlos Éboli, Departamento Geral de Polícia Técnico-Científica, Rio de Janeiro (RJ), Brasil
| | - A P Oliveira
- Instituto de Criminalística Carlos Éboli, Departamento Geral de Polícia Técnico-Científica, Rio de Janeiro (RJ), Brasil; Laboratório de Instrumentação e Simulação Computacional, Instituto Federal do Rio de Janeiro, Campus Paracambi (RJ), Brasil
| | - D Guimarães
- Instituto de Criminalística Carlos Éboli, Departamento Geral de Polícia Técnico-Científica, Rio de Janeiro (RJ), Brasil
| | - V S Felix
- Laboratório de Instrumentação e Simulação Computacional, Instituto Federal do Rio de Janeiro, Campus Paracambi (RJ), Brasil
| | - A R Pimenta
- Laboratório de Instrumentação e Simulação Computacional, Instituto Federal do Rio de Janeiro, Campus Paracambi (RJ), Brasil
| | - A L C Oliveira
- Instituto de Criminalística Carlos Éboli, Departamento Geral de Polícia Técnico-Científica, Rio de Janeiro (RJ), Brasil
| | - M B Oliveira
- Laboratório de Instrumentação e Simulação Computacional, Instituto Federal do Rio de Janeiro, Campus Paracambi (RJ), Brasil
| | - M A Oliveira
- Laboratório de Instrumentação e Simulação Computacional, Instituto Federal do Rio de Janeiro, Campus Paracambi (RJ), Brasil
| | - D S R Ferreira
- Laboratório de Instrumentação e Simulação Computacional, Instituto Federal do Rio de Janeiro, Campus Paracambi (RJ), Brasil
| | - R P Freitas
- Laboratório de Instrumentação e Simulação Computacional, Instituto Federal do Rio de Janeiro, Campus Paracambi (RJ), Brasil.
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Pires EM, Nogueira RM, Oliveira MA, Soares MA. Punica granatum L. (Lythraceae), a new host plant for Edessa meditabunda (Fabricius, 1974) (Hemiptera: Pentatomidae) in Mato Grosso, Brazil. BRAZ J BIOL 2024; 84:e259144. [DOI: 10.1590/1519-6984.259144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 02/04/2022] [Indexed: 11/22/2022] Open
Affiliation(s)
| | | | | | - M. A. Soares
- Universidade Federal dos Vales do Jequitinhonha e Mucuri, Brasil
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Oliveira MA, Albuquerque DM, Lanaro C, Costa FF. ASPECTOS PRÉ-CLÍNICOS DE EDIÇÃO GÊNICA PARA O TRATAMENTO DAS DOENÇAS FALCIFORMES NO BRASIL. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Mendes E, Casaro MB, Fukumori C, Ribeiro WR, Dos Santos AL, Sartorelli P, Lazarini M, Bogsan CSB, Oliveira MA, Ferreira CM. Preventive oral kefir supplementation protects mice from ovariectomy-induced exacerbated allergic airway inflammation. Benef Microbes 2021; 12:187-197. [PMID: 33789554 DOI: 10.3920/bm2020.0112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Asthma is an inflammatory lung disease that affects more women than men in adulthood. Clinical evidence shows that hormonal fluctuation during the menstrual cycle and menopause are related to increased asthma severity in women. Considering that life expectancy has increased and that most women now undergo menopause, strategies to prevent the worsening of asthma symptoms are particularly important. A recent study from our group showed that re-exposure of ovariectomised allergic mice to antigen (ovalbumin) leads to an exacerbation of lung inflammation that is similar to clinical conditions. However, little is known about the role of probiotics in the prevention of asthma exacerbations during the menstrual cycle or menopause. Thus, our objective was to evaluate the effects of supplementation with kefir, a popular fermented dairy beverage, as a preventive strategy for modulating allergic disease. The results show that the preventive kefir administration decreases the influx of inflammatory cells in the airways and exacerbates the production of mucus and the interleukin 13 cytokine. Additionally, kefir changes macrophage polarisation by decreasing the number of M2 macrophages, as shown by RT-PCR assay. Thus, kefir is a functional food that potentially prevents allergic airway inflammation exacerbations in ovariectomised mice.
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Affiliation(s)
- E Mendes
- Institute of Environmental, Chemistry and Pharmaceutical Sciences, Department of Pharmaceutics Sciences, Universidade Federal de São Paulo, R. Sao Nicolau, 210, Diadema, SP 09913-03, Brazil
| | - M B Casaro
- Institute of Environmental, Chemistry and Pharmaceutical Sciences, Department of Pharmaceutics Sciences, Universidade Federal de São Paulo, R. Sao Nicolau, 210, Diadema, SP 09913-03, Brazil
| | - C Fukumori
- Institute of Environmental, Chemistry and Pharmaceutical Sciences, Department of Pharmaceutics Sciences, Universidade Federal de São Paulo, R. Sao Nicolau, 210, Diadema, SP 09913-03, Brazil
| | - W R Ribeiro
- Institute of Environmental, Chemistry and Pharmaceutical Sciences, Department of Pharmaceutics Sciences, Universidade Federal de São Paulo, R. Sao Nicolau, 210, Diadema, SP 09913-03, Brazil
| | - A L Dos Santos
- Chemistry Department, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Universidade Federal de São Paulo, Diadema, SP 09972-270, Brazil
| | - P Sartorelli
- Chemistry Department, Institute of Environmental, Chemistry and Pharmaceutical Sciences, Universidade Federal de São Paulo, Diadema, SP 09972-270, Brazil
| | - M Lazarini
- Institute of Environmental, Chemistry and Pharmaceutical Sciences, Department of Pharmaceutics Sciences, Universidade Federal de São Paulo, R. Sao Nicolau, 210, Diadema, SP 09913-03, Brazil
| | - C S B Bogsan
- Department of Biochemical-Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 580, B-16, Sao Paulo, SP 05508-900, Brazil
| | - M A Oliveira
- Department of Pharmacology, Institute of Biomedical Sciences I, University of Sao Paulo, Sao Paulo, Av. Prof. Lineu Prestes, 1374, SP 05508-000, Brazil
| | - C M Ferreira
- Institute of Environmental, Chemistry and Pharmaceutical Sciences, Department of Pharmaceutics Sciences, Universidade Federal de São Paulo, R. Sao Nicolau, 210, Diadema, SP 09913-03, Brazil
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Martinez-Bengochea A, Doretto L, Rosa IF, Oliveira MA, Silva C, Silva DMZA, Santos GR, Santos JSF, Avelar MM, Silva LV, Lucianelli-Junior D, Souza ERB, Silva RC, Stewart AB, Nakaghi LSO, Valentin FN, Nóbrega RH. Effects of 17β-estradiol on early gonadal development and expression of genes implicated in sexual differentiation of a South American teleost, Astyanax altiparanae. Comp Biochem Physiol B Biochem Mol Biol 2020; 248-249:110467. [PMID: 32628996 DOI: 10.1016/j.cbpb.2020.110467] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 04/18/2020] [Revised: 06/14/2020] [Accepted: 06/23/2020] [Indexed: 12/19/2022]
Abstract
Gonadal sex differentiation in teleost fish shows greater plasticity as compared to other vertebrates, as it can be influenced by a variety of factors such as exogenous sex steroids. Exogenous estrogens, such as 17β-estradiol (E2), can induce feminization when administered during early embryonic development. However, the mechanisms underlying the E2-induced feminization are not fully understood, especially in Neotropical species. Therefore, the aim of this study was to evaluate the effects of E2 administration on the phenotypic sex characteristics, histological assessment of the gonads, and the expression of selected genes in Astyanax altiparanae exposed to dietary E2 prior to gonadal differentiation. At 4 days post-hatch (dph), groups of 30-40 undifferentiated larvae were fed with a diet containing varying amounts of E2 for 28 days, and fish were sampled at 90 dph. Previous studies revealed that ovary formation in A. altiparanae occurred at 58 dph, whereas the first sign of testis formation was found at 73 dph. In relation to the control, E2 exposure increased the proportion of phenotypic females in 120% and 148.4% for 4 and 6 mg E2/Kg, respectively. However, histological analysis revealed that treatments did not affect gonadal sex ratio between males and females, but induced intersex (testis-ova) in the group treated with 6 mg E2/Kg food. Treatment with E2 also altered gonadal transcript levels of a selected number of genes implicated in sexual differentiation. Males overexpressed dmrt1, sox9 and amh following E2 treatment as compared to control. Females showed increased mRNA levels of dmrt1 and sox9, which might be related to the down-regulation of cyp19a1a after E2 exposure. In summary, E2 exposure during early gonadal development affected male secondary characteristics without changing the gonadal sex ratio, and altered expression of genes implicated in sexual differentiation.
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Affiliation(s)
- A Martinez-Bengochea
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - L Doretto
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - I F Rosa
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - M A Oliveira
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - C Silva
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - D M Z A Silva
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil
| | - G R Santos
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil; Aquaculture Center (CAUNESP), São Paulo State University, Jaboticabal, São Paulo, Brazil
| | - J S F Santos
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil; Aquaculture Center (CAUNESP), São Paulo State University, Jaboticabal, São Paulo, Brazil
| | - M M Avelar
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil; Aquaculture Center (CAUNESP), São Paulo State University, Jaboticabal, São Paulo, Brazil
| | - L V Silva
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil; Aquaculture Center (CAUNESP), São Paulo State University, Jaboticabal, São Paulo, Brazil
| | - D Lucianelli-Junior
- Laboratório de Morfofisiologia da Faculdade de Medicina da Universidade Federal do Pará, UFPA, Altamira, Pará, Brazil
| | - E R B Souza
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil; Aquaculture Center (CAUNESP), São Paulo State University, Jaboticabal, São Paulo, Brazil
| | - R C Silva
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil; Aquaculture Center (CAUNESP), São Paulo State University, Jaboticabal, São Paulo, Brazil
| | - A B Stewart
- Department of Orthopaedics Musculoskeletal Research, West Virginia University,USA
| | - L S O Nakaghi
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil; Aquaculture Center (CAUNESP), São Paulo State University, Jaboticabal, São Paulo, Brazil
| | - F N Valentin
- Laboratório de Morfofisiologia da Faculdade de Medicina da Universidade Federal do Pará, UFPA, Altamira, Pará, Brazil.
| | - R H Nóbrega
- Reproductive and Molecular Biology Group, Department of Structural and Functional Biology, Institute of Biosciences, São Paulo State University, Botucatu, São Paulo, Brazil.
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Campos MST, Fialho SL, Pereira BG, Yoshida MI, Mussel WN, Junior ASC, Oliveira MA. Development and chemical characterization of biodegradable polymeric implants containing sirolimus for the treatment of malignant solid tumors. Pharmazie 2019; 74:221-226. [PMID: 30940305 DOI: 10.1691/ph.2019.8201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
The use of sirolimus and its analogs has been evaluated in studies aimed at combating several types of cancer; however, because of the limited bioavailability of the drug, the search for new forms of administration is required. Biodegradable polymeric implants containing sirolimus were developed and assessed as an alternative method of drug administration. Implants containing 25 % (w/w) sirolimus were prepared employing the polymer matrices chitosan, polycaprolactone and poly(lactic-co-glycolic acid) (PLGA) in two proportions: PLGA 50:50 and PLGA 75:25. Thermal analysis techniques such as thermogravimetry and differential scanning calorimetry, combined with x-ray diffraction were used to characterize and evaluate the compatibility of the constituents of the formulation. No incompatibilities were found between the components, but drug amorphization was observed in all samples. Implants made from the polymers chitosan and PCL may accelerate the degradation of SRL when these polymers are dissolved in methanol at 50 °C. HPLC analysis showed that the implant prepared with PLGA 75:25 did not present degradation products and maintained its appropriate drug content, even when dissolved in methanol and heated to 50 °C. Therefore, it represents the most suitable biodegradable polymer for use in implants developed for the treatment of malignant solid tumors. However, it is still necessary to further study the drug effects after amorphization of the crystal and also to perform stability and solubility analysis.
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Farder-Gomes CF, Oliveira MA, Gonçalves PL, Gontijo LM, Zanuncio JC, Bragança MAL, Pires EM. Reproductive ecology of phorid parasitoids in relation to the head size of leaf-cutting ants Atta sexdens Forel. Bull Entomol Res 2017; 107:487-492. [PMID: 27903323 DOI: 10.1017/s0007485316001073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The leaf-cutting ant Atta sexdens Forel (Hymenoptera: Formicidae) is one of the most damaging agricultural pests in the Neotropics. Management strategies predominantly rely on the use of general insecticides. What is needed are more species-specific and environmentally friendly options. Parasitioids such as phorid flies (Diptera: Phoridae) may be one such option, but a greater understanding of the ecology of the flies and their ant hosts is essential to devise biological control strategies. Here we report parasitism rates, ant host size, parasitoid abundance per host and resultant sex ratios of two phorid species Apocephalus attophilus Borgmeier and Eibesfeldtphora tonhascai Brown parasitizing A.sexdens. The two species achieved parasitism rates of 1.48 and 1.46%, respectively and the pupal period was 14.7 ± 1.1 days and 22.1 ± 2.8 days, respectively. There was no significant difference between the head capsule width of ants parasitized by either A. attophilus or E. tonhascai. Likewise, there was no significant effect between the head capsule width of parasitized and unparasitized ants for both species. A significant positive correlation was found between the head capsule width of the parasitized ants and the number of adult parasitoids A. attophilus emerged. Ants parasitized by E. tonhascai survived significantly longer than those parasitized by A. attophilus. There was no significant effect of ant head width on the sex ratio of the offspring of either parasitoid species and no significant difference in the sex ratio (male: female) of their offspring. In summary, these data addressed here are important steps when considering natural enemies for biological control. Studying survival of the parasitized ants, parasitoid offspring sex ratio and host size preference allows for a better understanding of ant natural biological control in the field and can help in rearing of A. attophilus and E. tonhascai in laboratory.
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Affiliation(s)
- C F Farder-Gomes
- Departamento de Biologia Animal,Universidade Federal de Viçosa,Viçosa,Minas Gerais,Brasil
| | - M A Oliveira
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Viçosa,campusUFV Florestal,Florestal,Minas Gerais,Brasil
| | - P L Gonçalves
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Viçosa,campusUFV Florestal,Florestal,Minas Gerais,Brasil
| | - L M Gontijo
- Instituto de Ciências Agrárias, Universidade Federal de Viçosa,campusUFV Florestal,Florestal,Minas Gerais,Brasil
| | - J C Zanuncio
- Departamento de Biologia Animal,Universidade Federal de Viçosa,Viçosa,Minas Gerais,Brasil
| | - M A L Bragança
- Curso de Ciências Biológicas, Universidade Federal de Tocantins,Porto Nacional,Tocantins,Brasil
| | - E M Pires
- Universidade Federal de Mato Grosso,campusSinop,Sinop,Mato Grosso,Brasil
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Sims JA, Giorgi MC, Oliveira MA, Meneghetti JC, Gutierrez MA. Directional analysis of cardiac motion field from gated fluorodeoxyglucose PET images using the Discrete Helmholtz Hodge Decomposition. Comput Med Imaging Graph 2017; 65:69-78. [PMID: 28688629 DOI: 10.1016/j.compmedimag.2017.06.004] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 05/31/2017] [Accepted: 06/19/2017] [Indexed: 10/19/2022]
Abstract
OBJECTIVES Extract directional information related to left ventricular (LV) rotation and torsion from a 4D PET motion field using the Discrete Helmholtz Hodge Decomposition (DHHD). MATERIALS AND METHODS Synthetic motion fields were created using superposition of rotational and radial field components and cardiac fields produced using optical flow from a control and patient image. These were decomposed into curl-free (CF) and divergence-free (DF) components using the DHHD. RESULTS Synthetic radial components were present in the CF field and synthetic rotational components in the DF field, with each retaining its center position, direction of motion and diameter after decomposition. Direction of rotation at apex and base for the control field were in opposite directions during systole, reversing during diastole. The patient DF field had little overall rotation with several small rotators. CONCLUSIONS The decomposition of the LV motion field into directional components could assist quantification of LV torsion, but further processing stages seem necessary.
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Affiliation(s)
- J A Sims
- Laboratory of Biomedical Engineering, Polytechnic School, University of São Paulo, São Paulo, Brazil.
| | - M C Giorgi
- Department of Nuclear Medicine and Molecular Imaging, Heart Institute, University of São Paulo Medical School, São Paulo, Brazil
| | - M A Oliveira
- Department of Nuclear Medicine and Molecular Imaging, Heart Institute, University of São Paulo Medical School, São Paulo, Brazil
| | - J C Meneghetti
- Department of Nuclear Medicine and Molecular Imaging, Heart Institute, University of São Paulo Medical School, São Paulo, Brazil
| | - M A Gutierrez
- Laboratory of Biomedical Engineering, Polytechnic School, University of São Paulo, São Paulo, Brazil; Informatics Division, Heart Institute, University of São Paulo Medical School, São Paulo, Brazil.
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Oliveira MA, Vale MP, Bendo CB, Paiva SM, Serra-Negra JM. Influence of negative dental experiences in childhood on the development of dental fear in adulthood: a case-control study. J Oral Rehabil 2017; 44:434-441. [PMID: 28386938 DOI: 10.1111/joor.12513] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2017] [Indexed: 11/29/2022]
Abstract
The aim of this study was to evaluate the factors associated with high dental fear among Brazilian university students, especially the effect of a negative dental experience in childhood. This paired case-control study was conducted at the Universidade Federal de Minas Gerais in Brazil. Dental, psychology and mathematics students were divided into cases (high fear) and controls (low fear), defined by cluster analysis, according to the items of the Dental Fear Survey (DFS). Cases (n = 65) and controls (n = 260) participants were paired (1:4) by gender, undergraduate course and social vulnerability. The students self-reported the DFS and a questionnaire about oral health. Descriptive analysis, bivariate and multivariate conditional logistic regression were used as statistical tests with a significance level of 5%. The multivariate model showed that students who reported negative dental experiences in childhood (OR = 2·97; 95% CI: 1·44-6·14), toothache in the last 12 months (OR = 11·31; 95% CI: 4·79-26·68), discomfort during dental treatment (OR = 5·36; 95% CI: 2·53-11·36) and poor self-evaluation of oral health (OR = 3·82; 95% CI: 1·61-8·11) were more likely to have high dental fear. Negative dental experiences in childhood influence dental fear in adulthood. Oral health education should be addressed among university students to reduce dental fear.
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Affiliation(s)
- M A Oliveira
- Department of Paediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal de Minas Gerais, Pampulha, Belo Horizonte, Minas Gerais, Brazil
| | - M P Vale
- Department of Paediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal de Minas Gerais, Pampulha, Belo Horizonte, Minas Gerais, Brazil
| | - C B Bendo
- Department of Paediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal de Minas Gerais, Pampulha, Belo Horizonte, Minas Gerais, Brazil
| | - S M Paiva
- Department of Paediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal de Minas Gerais, Pampulha, Belo Horizonte, Minas Gerais, Brazil
| | - J M Serra-Negra
- Department of Paediatric Dentistry and Orthodontics, School of Dentistry, Universidade Federal de Minas Gerais, Pampulha, Belo Horizonte, Minas Gerais, Brazil
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Mori V, Oliveira MA, Vargas MHM, da Cunha AA, de Souza RG, Pitrez PM, Moriya HT. Input respiratory impedance in mice: comparison between the flow-based and the wavetube method to perform the forced oscillation technique. Physiol Meas 2017; 38:992-1005. [PMID: 28378711 DOI: 10.1088/1361-6579/aa6b75] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Objective and approach: In this study, we estimated the constant phase model (CPM) parameters from the respiratory impedance of male BALB/c mice by performing the forced oscillation technique (FOT) in a control group (n = 8) and in a murine model of asthma (OVA) (n = 10). Then, we compared the results obtained by two different methods, using a commercial equipment (flexiVent-flexiWare 7.X; SCIREQ, Montreal, Canada) (FXV) and a wavetube method equipment (Sly et al 2003 J. Appl. Physiol. 94 1460-6) (WVT). We believe that the results from different methods may not be comparable. First, we compared the results performing a two-way analysis of variance (ANOVA) for the resistance, elastance and tissue damping. MAIN RESULTS We found statistically significant differences in all CPM parameters, except for resistance, when comparing Control and OVA groups. When comparing devices, we found statistically significant differences in resistance, while differences in elastance were not observed. For tissue damping, the results from WVT were observed to be higher than those from FXV. Finally, when comparing the relative variation between the CPM parameters of the Control and OVA groups in both devices, no significant differences were observed for all parameters. SIGNIFICANCE We then conclude that this assessment can compensate the effect of using different cannulas. Furthermore, tissue damping differences between groups can be compensated, since bronchoconstrictors were not used. Therefore, we believe that relative variations in the results between groups can be a comparing parameter when using different equipment without bronchoconstrictor administration.
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Affiliation(s)
- V Mori
- Biomedical Engineering Laboratory, Escola Politécnica, University of Sao Paulo, Av. Prof. Luciano Gualberto, travessa 3, nº 158, Predio Engenharia Elétrica, Room D2-01, ZIP 05508-900, Sao Paulo-SP, Brazil
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Diniz CG, Magalhães NGM, Sousa AA, Santos Filho C, Diniz DG, Lima CM, Oliveira MA, Paulo DC, Pereira PDC, Sherry DF, Picanço-Diniz CW. Microglia and neurons in the hippocampus of migratory sandpipers. ACTA ACUST UNITED AC 2016; 49:e5005. [PMID: 26577847 PMCID: PMC4678657 DOI: 10.1590/1414-431x20155005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 08/05/2015] [Indexed: 11/25/2022]
Abstract
The semipalmated sandpiper Calidris pusilla and the spotted
sandpiper Actitis macularia are long- and short-distance migrants,
respectively. C. pusilla breeds in the sub-arctic and mid-arctic
tundra of Canada and Alaska and winters on the north and east coasts of South
America. A. macularia breeds in a broad distribution across most of
North America from the treeline to the southern United States. It winters in the
southern United States, and Central and South America. The autumn migration route of
C. pusilla includes a non-stop flight over the Atlantic Ocean,
whereas autumn route of A. macularia is largely over land. Because
of this difference in their migratory paths and the visuo-spatial recognition tasks
involved, we hypothesized that hippocampal volume and neuronal and glial numbers
would differ between these two species. A. macularia did not differ
from C. pusilla in the total number of hippocampal neurons, but the
species had a larger hippocampal formation and more hippocampal microglia. It remains
to be investigated whether these differences indicate interspecies differences or
neural specializations associated with different strategies of orientation and
navigation.
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Affiliation(s)
- C G Diniz
- Laboratório de Biologia Molecular e Ambiental, Instituto Federal de Educação, Ciência e Tecnologia do Pará, Bragança, PA, Brasil
| | - N G M Magalhães
- Laboratório de Investigações em Neurodegeneração e Infecção, Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brasil
| | - A A Sousa
- Laboratório de Investigações em Neurodegeneração e Infecção, Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brasil
| | - C Santos Filho
- Laboratório de Investigações em Neurodegeneração e Infecção, Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brasil
| | - D G Diniz
- Laboratório de Investigações em Neurodegeneração e Infecção, Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brasil
| | - C M Lima
- Laboratório de Investigações em Neurodegeneração e Infecção, Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brasil
| | - M A Oliveira
- Laboratório de Investigações em Neurodegeneração e Infecção, Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brasil
| | - D C Paulo
- Laboratório de Investigações em Neurodegeneração e Infecção, Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brasil
| | - P D C Pereira
- Laboratório de Biologia Molecular e Ambiental, Instituto Federal de Educação, Ciência e Tecnologia do Pará, Bragança, PA, Brasil
| | - D F Sherry
- Department of Psychology Advanced Facility for Avian Research, University of Western Ontario, London, Ontario, Canada
| | - C W Picanço-Diniz
- Laboratório de Investigações em Neurodegeneração e Infecção, Hospital Universitário João de Barros Barreto, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brasil
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Zeidan TA, Trotta JT, Tilak PA, Oliveira MA, Chiarella RA, Foxman BM, Almarsson Ö, Hickey MB. An unprecedented case of dodecamorphism: the twelfth polymorph of aripiprazole formed by seeding with its active metabolite. CrystEngComm 2016. [DOI: 10.1039/c5ce02467f] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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13
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Francisco A, Dentinho MT, Alves SP, Portugal PV, Fernandes F, Sengo S, Jerónimo E, Oliveira MA, Costa P, Sequeira A, Bessa RJB, Santos-Silva J. Growth performance, carcass and meat quality of lambs supplemented with increasing levels of a tanniferous bush (Cistus ladanifer L.) and vegetable oils. Meat Sci 2015; 100:275-82. [PMID: 25460137 DOI: 10.1016/j.meatsci.2014.10.014] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 10/09/2014] [Accepted: 10/16/2014] [Indexed: 01/21/2023]
Abstract
The effects of dietary inclusion of Cistus ladanifer L. (CL) and a vegetable oil blend were evaluated on growth performance,carcass and meat quality of fifty four lambs that were assigned to 9 diets, corresponding to 3 levels of CL(50, 100 and 200 g/kg DM) and 3 levels of oil inclusion (0, 40 and 80 g/kg DM). Treatments had no effects on growth rate. Oil depressed dry matter intake (P = 0.017), carcass muscle (P = 0.041) and increased (P = 0.016) kidney knob channel fat. Chemical and physical meat quality traits were not affected by treatments. Off-flavour perception was higher for 8% of oil (P b 0.001). The level of 100 g/kg DM of CL inclusion improved meat stability after 7 days of storage. Supplementation with linseed and soybean oils (2:1) was a good approach to improve meat nutritional value from feedlot lambs, increasing total n-3 PUFA.
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14
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Taniguchi Y, Takahashi Y, Toba T, Yamada S, Yokoi K, Kobayashi S, Okajima S, Shimane A, Kawai H, Yasaka Y, Smanio P, Oliveira MA, Machado L, Cestari P, Medeiros E, Fukuzawa S, Okino S, Ikeda A, Maekawa J, Ichikawa S, Kuroiwa N, Yamanaka K, Igarashi A, Inagaki M, Patel K, Mahan M, Ananthasubramaniam K, Mouden M, Yokota S, Ottervanger J, Knollema S, Timmer J, Jager P, Padron K, Peix A, Cabrera L, Pena Bofill V, Valera D, Rodriguez Nande L, Carrillo Hernandez R, Mena Esnard E, Fernandez Columbie Y, Bertella E, Baggiano A, Mushtaq S, Segurini C, Loguercio M, Conte E, Beltrama V, Petulla' M, Andreini D, Pontone G, Guzic Salobir B, Dolenc Novak M, Jug B, Kacjan B, Novak Z, Vrtovec M, Mushtaq S, Pontone G, Bertella E, Conte E, Segurini C, Volpato V, Baggiano A, Formenti A, Pepi M, Andreini D, Ajanovic R, Husic-Selimovic A, Zujovic-Ajanovic A, Mlynarski R, Mlynarska A, Golba K, Sosnowski M, Ameta D, Goyal M, Kumar D, Chandra S, Sethi R, Puri A, Dwivedi SK, Narain VS, Saran RK, Nekolla S, Rischpler C, Nicolosi S, Langwieser N, Dirschinger R, Laugwitz K, Schwaiger M, Goral JL, Napoli J, Forcada P, Zucchiatti N, Damico A, Damico A, Olivieri D, Lavorato M, Dubesarsky E, Montana O, Salgado C, Jimenez-Heffernan A, Ramos-Font C, Lopez-Martin J, Sanchez De Mora E, Lopez-Aguilar R, Manovel A, Martinez A, Rivera F, Soriano E, Maroz-Vadalazhskaya N, Trisvetova E, Vrublevskaya O, Abazid R, Kattea M, Saqqah H, Sayed S, Smettei O, Winther S, Svensson M, Birn H, Jorgensen H, Botker H, Ivarsen P, Bottcher M, Maaniitty T, Stenstrom I, Saraste A, Pikkarainen E, Uusitalo V, Ukkonen H, Kajander S, Bax J, Knuuti J, Choi T, Park H, Lee C, Lee J, Seo Y, Cho Y, Hwang E, Cho D, Sanchez Enrique C, Ferrera C, Olmos C, Jimenez - Ballve A, Perez - Castejon MJ, Fernandez C, Vivas D, Vilacosta I, Nagamachi S, Onizuka H, Nishii R, Mizutani Y, Kitamura K, Lo Presti M, Polizzi V, Pino P, Luzi G, Bellavia D, Fiorilli R, Madeo A, Malouf J, Buffa V, Musumeci F, Rosales S, Puente A, Zafrir N, Shochat T, Mats A, Solodky A, Kornowski R, Lorber A, Boemio A, Pellegrino T, Paolillo S, Piscopo V, Carotenuto R, Russo B, Pellegrino S, De Matteis G, Perrone-Filardi P, Cuocolo A, Piscopo V, Pellegrino T, Boemio A, Carotenuto R, Russo B, Pellegrino S, De Matteis G, Petretta M, Cuocolo A, Amirov N, Ibatullin M, Sadykov A A, Saifullina G, Ruano R, Diego Dominguez M, Rodriguez Gabella T, Diego Nieto A, Diaz Gonzalez L, Garcia-Talavera J, Sanchez Fernandez P, Leen A, Al Younis I, Zandbergen-Harlaar S, Verberne H, Gimelli A, Veltman C, Wolterbeek R, Bax J, Scholte A, Mooney D, Rosenblatt J, Dunn T, Vasaiwala S, Okuda K, Nakajima K, Nystrom K, Edenbrandt L, Matsuo S, Wakabayashi H, Hashimoto M, Kinuya S, Iric-Cupic V, Milanov S, Davidovic G, Zdravkovic V, Ashikaga K, Yoneyama K, Akashi Y, Shugushev Z, Maximkin D, Chepurnoy A, Volkova O, Baranovich V, Faibushevich A, El Tahlawi M, Elmurr A, Alzubaidi S, Sakrana A, Gouda M, El Tahlawi R, Sellem A, Melki S, Elajmi W, Hammami H, Okano M, Kato T, Kimura M, Funasako M, Nakane E, Miyamoto S, Izumi T, Haruna T, Inoko M, Massardo T, Swett E, Fernandez R, Vera V, Zhindon J, Fernandez R, Swett E, Vera V, Zhindon J, Alay R, Massardo T, Ohshima S, Nishio M, Kojima A, Tamai S, Kobayashi T, Murohara T, Burrell S, Van Rosendael A, Van Den Hoogen I, De Graaf M, Roelofs J, Kroft L, Bax J, Scholte A, Rjabceva I, Krumina G, Kalvelis A, Chanakhchyan F, Vakhromeeva M, Kankiya E, Koppes J, Knol R, Wondergem M, Van Der Ploeg T, Van Der Zant F, Lazarenko SV, Bruin VS, Pan XB, Declerck JM, Van Der Zant FM, Knol RJJ, Juarez-Orozco LE, Alexanderson E, Slart R, Tio R, Dierckx R, Zeebregts C, Boersma H, Hillege H, Martinez-Aguilar M, Jordan-Rios A, Christensen TE, Ahtarovski KA, Bang LE, Holmvang L, Soeholm H, Ghotbi AA, Andersson H, Ihlemann N, Kjaer A, Hasbak P, Gulya M, Lishmanov YB, Zavadovskii K, Lebedev D, Stahle M, Hellberg S, Liljenback H, Virta J, Metsala O, Yla-Herttuala S, Saukko P, Knuuti J, Saraste A, Roivainen A, Thackeray J, Wang Y, Bankstahl J, Wollert K, Bengel F, Saushkina Y, Evtushenko V, Minin S, Efimova I, Evtushenko A, Smishlyaev K, Lishmanov Y, Maslov L, Okuda K, Nakajima K, Kirihara Y, Sugino S, Matsuo S, Taki J, Hashimoto M, Kinuya S, Ahmadian A, Berman J, Govender P, Ruberg F, Miller E, Piriou N, Pallardy A, Valette F, Cahouch Z, Mathieu C, Warin-Fresse K, Gueffet J, Serfaty J, Trochu J, Kraeber-Bodere F, Van Dijk J, Mouden M, Ottervanger J, Van Dalen J, Jager P, Zafrir N, Ofrk H, Vaturi M, Shochat T, Hassid Y, Belzer D, Sagie A, Kornowski R, Kaminek M, Metelkova I, Budikova M, Koranda P, Henzlova L, Sovova E, Kincl V, Drozdova A, Jordan M, Shahid F, Teoh Y, Thamen R, Hara N, Onoguchi M, Hojyo O, Kawaguchi Y, Murai M, Udaka F, Matsuzawa Y, Bulugahapitiya DS, Avison M, Martin J, Liu YH, Wu J, Liu C, Sinusas A, Daou D, Sabbah R, Bouladhour H, Coaguila C, Aguade-Bruix S, Pizzi M, Romero-Farina G, Candell-Riera J, Castell-Conesa J, Patchett N, Sverdlov A, Miller E, Daou D, Sabbah R, Bouladhour H, Coaguila C, Smettei O, Abazid R, Boulaamayl El Fatemi S, Sallam L, Snipelisky D, Park J, Ray J, Shapiro B, Kostkiewicz M, Szot W, Holcman K, Lesniak-Sobelga A, Podolec P, Clerc O, Possner M, Liga R, Vontobel J, Mikulicic F, Graeni C, Benz D, Herzog B, Gaemperli O, Kaufmann P. Poster Session 1: Sunday 3 May 2015, 08:30-18:00 * Room: Poster Area. Eur Heart J Cardiovasc Imaging 2015. [DOI: 10.1093/ehjci/jev051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Bomfim GF, Echem C, Martins CB, Costa TJ, Sartoretto SM, Dos Santos RA, Oliveira MA, Akamine EH, Fortes ZB, Tostes RC, Webb RC, Carvalho MHC. Toll-like receptor 4 inhibition reduces vascular inflammation in spontaneously hypertensive rats. Life Sci 2014; 122:1-7. [PMID: 25498891 DOI: 10.1016/j.lfs.2014.12.001] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Revised: 10/07/2014] [Accepted: 12/01/2014] [Indexed: 10/24/2022]
Abstract
AIMS Hypertension is associated with increased levels of circulating cytokines and recent studies have shown that innate immunity contributes to hypertension. The mechanisms which hypertension stimulates immune response remain unclear, but may involve formation of neo-antigens that activate the immune system. Toll like receptor 4 (TLR4) is an innate immune receptor that binds a wide spectrum of exogenous (lipopolysaccharide) and endogenous ligands. TLR4 signaling leads to activation of nuclear factor kappa B (NFκB) and transcription of genes involved in inflammatory response. We previously demonstrated that TLR4 blockade reduces blood pressure and the augmented vascular contractility in spontaneously hypertensive rats (SHR). Here we hypothesized that inhibition of TLR4 ameliorates the vascular inflammatory process by a NFκB signaling pathway. MAIN METHODS SHR and Wistar rats were treated with anti-TLR4 antibody (1μg/day) or unspecific IgG for 15days (i.p.). KEY FINDINGS Anti-TLR4 treatment decreased production of reactive oxygen species and expression of IL-6 cytokine in mesenteric resistance arteries from SHR, when compared with IgG-treated SHR. Anti-TLR4 treatment also abolished the increased vascular reactivity to noradrenaline observed in IgG-treated SHR, as described before, and inhibition of NFκB decreased noradrenaline responses only in IgG-treated SHR. Mesenteric arteries from SHR treated with anti-TLR4 displayed decreased expression of MyD88, but not TRIF, key molecules in TLR4 signaling. Phosphorylation of p38 and NF-κB p65 were decreased in arteries from anti-TLR4-treated SHR versus IgG-treated SHR. SIGNIFICANCE Together, these results suggest that TLR4 is a key player in hypertension and vascular inflammatory process by a NFκB signaling pathway.
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Affiliation(s)
- G F Bomfim
- Institute of Health Sciences, Federal University of Mato Grosso, Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop, MT 78550-000, Brazil; Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Professor LineuPrestes, 1524, Sala 205, São Paulo, SP 05508-900, Brazil.
| | - C Echem
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Professor LineuPrestes, 1524, Sala 205, São Paulo, SP 05508-900, Brazil.
| | - C B Martins
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Professor LineuPrestes, 1524, Sala 205, São Paulo, SP 05508-900, Brazil.
| | - T J Costa
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Professor LineuPrestes, 1524, Sala 205, São Paulo, SP 05508-900, Brazil.
| | - S M Sartoretto
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Professor LineuPrestes, 1524, Sala 205, São Paulo, SP 05508-900, Brazil.
| | - R A Dos Santos
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Professor LineuPrestes, 1524, Sala 205, São Paulo, SP 05508-900, Brazil.
| | - M A Oliveira
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Professor LineuPrestes, 1524, Sala 205, São Paulo, SP 05508-900, Brazil.
| | - E H Akamine
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Professor LineuPrestes, 1524, Sala 205, São Paulo, SP 05508-900, Brazil.
| | - Z B Fortes
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Professor LineuPrestes, 1524, Sala 205, São Paulo, SP 05508-900, Brazil.
| | - R C Tostes
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Avenida Bandeirantes 3900, Ribeirao Preto, Sao Paulo 14049-900, Brazil.
| | - R C Webb
- Department of Physiology, Georgia Regents University, 1120 15th St, Augusta, GA 30912, United States of America.
| | - M H C Carvalho
- Department of Pharmacology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Professor LineuPrestes, 1524, Sala 205, São Paulo, SP 05508-900, Brazil.
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Cassol APV, Pereira Filho W, Oliveira MA, Domingues AL, Correa FS, Buriol GA. First record of a bloom of the invasive species Ceratium furcoides (Levander) Langhans 1925 in Rio Grande do Sul state, Brazil. BRAZ J BIOL 2014; 74:515-7. [PMID: 25166340 DOI: 10.1590/1519-6984.05413] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 04/29/2013] [Indexed: 11/22/2022] Open
Affiliation(s)
- A P V Cassol
- Programa de Pós-graduação em Agrobiologia, Universidade Federal de Santa Maria ? UFSM, Santa Maria, RS, Brazil
| | - W Pereira Filho
- Programa de Pós-graduação em Geografia, Universidade Federal de Santa Maria ? UFSM, Santa Maria, RS, Brazil
| | - M A Oliveira
- Programa de Pós-graduação em Agrobiologia, Universidade Federal de Santa Maria ? UFSM, Santa Maria, RS, Brazil
| | - A L Domingues
- Programa de Pós-graduação em Agrobiologia, Universidade Federal de Santa Maria ? UFSM, Santa Maria, RS, Brazil
| | - F S Correa
- Programa de Pós-graduação em Geografia, Universidade Federal de Santa Maria ? UFSM, Santa Maria, RS, Brazil
| | - G A Buriol
- Programa de Pós-graduação em Agrobiologia, Universidade Federal de Santa Maria ? UFSM, Santa Maria, RS, Brazil
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Olivoto RR, Damiani CEN, Kassouf Silva I, Lofrano-Alves MS, Oliveira MA, Fogaça RTH. Effects of eugenol on resting tension of rat atria. ACTA ACUST UNITED AC 2014; 47:328-33. [PMID: 24676474 PMCID: PMC4075297 DOI: 10.1590/1414-431x20143472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 02/03/2014] [Indexed: 12/04/2022]
Abstract
In cardiac and skeletal muscle, eugenol (μM range) blocks excitation-contraction
coupling. In skeletal muscle, however, larger doses of eugenol (mM range) induce
calcium release from the sarcoplasmic reticulum. The effects of eugenol are therefore
dependent on its concentration. In this study, we evaluated the effects of eugenol on
the contractility of isolated, quiescent atrial trabeculae from male Wistar rats
(250-300 g; n=131) and measured atrial ATP content. Eugenol (1, 3, 5, 7, and 10 mM)
increased resting tension in a dose-dependent manner. Ryanodine [100 µM; a specific
ryanodine receptor (RyR) blocker] and procaine (30 mM; a nonspecific RyR blocker) did
not block the increased resting tension induced by eugenol regardless of whether
extracellular calcium was present. The myosin-specific inhibitor 2,3-butanedione
monoxime (BDM), however, reversed the increase in resting tension induced by eugenol.
In Triton-skinned atrial trabeculae, in which all membranes were solubilized, eugenol
did not change resting tension, maximum force produced, or the force
vs pCa relationship (pCa=-log [Ca2+]). Given that
eugenol reduced ATP concentration, the increase in resting tension observed in this
study may have resulted from cooperative activation of cardiac thin filaments by
strongly attached cross-bridges (rigor state).
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Affiliation(s)
- R R Olivoto
- Departamento de Fisiologia, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - C E N Damiani
- Departamento de Fisiologia, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - I Kassouf Silva
- Departamento de Fisiologia, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - M S Lofrano-Alves
- Departamento de Fisiologia, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - M A Oliveira
- Departamento de Fisiologia, Universidade Federal do Paraná, Curitiba, PR, Brasil
| | - R T H Fogaça
- Departamento de Fisiologia, Universidade Federal do Paraná, Curitiba, PR, Brasil
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Valentini NC, Ramalho MH, Oliveira MA. Movement assessment battery for children-2: translation, reliability, and validity for Brazilian children. Res Dev Disabil 2014; 35:733-740. [PMID: 24290814 DOI: 10.1016/j.ridd.2013.10.028] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 10/23/2013] [Accepted: 10/28/2013] [Indexed: 06/02/2023]
Abstract
The Movement Assessment Battery for Children 2nd edition (MABC-2) is a well-recognized assessment used to identify children with Developmental Coordination Disorder (DCD). Although researchers and practitioners across Brazil have used the MABC-2 to identify children with motor deficits, its validation for this particular population has yet to be investigated. In this study, we translated all MABC-2 items and validated them with respect to content, construct and criteria validity. The validation process involved 13 experts in Motor Development and a total of 844 children (3-13 years old) from two different states in Brazil. A cross-cultural translation method yielded a Brazilian-Portuguese version of the battery. The expert panel confirmed language clarity and pertinence of the items. High intra- and inter-rater reliability and internal consistency for the MABC-2 was established for Brazilian children. A discriminant analysis confirmed the MABC-2 power (.80) to differentiate children with DCD and those at risk for DCD from typically developing children. Predictive validity was observed for the impairment scores and a percentile main effect was found in the repeated measures ANOVA (ICC: .93 and .73, respectively). Although our data are not representative of the entire country, this study is the first to confirm that the original standardized scores established for the MABC-2 are valid in Brazilian children.
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Affiliation(s)
- N C Valentini
- Department of Physical Education, School of Physical Education, Federal University of Rio Grande do Sul, Rua Felizardo 7500, Bairro Jardim Botânico, Porto Alegre, Rio Grande do Sul, Brazil.
| | - M H Ramalho
- Department of Physical Education, State University of Santa Catarina, Rua Pascoal Simone 358, Coqueiros, Florianópolis, Santa Catarina, Brazil.
| | - M A Oliveira
- School of Public Health, University of Maryland, College Park, MD, USA.
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França LB, Oliveira MA, Small IA, Zukin M, de Lima Araujo LH. Cisplatin-etoposide combination in adjuvant therapy for non-small cell lung cancer: A Brazilian experience. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e17530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Rossi A, Alves VA, Da Silva LA, Oliveira MA, Assis DOS, Santos FA, De Miranda RRS. Electrooxidation and inhibition of the antibacterial activity of oxytetracycline hydrochloride using a RuO2 electrode. J APPL ELECTROCHEM 2008. [DOI: 10.1007/s10800-008-9676-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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De Castro WV, Pires MAS, Oliveira MA, Vianna-Soares CD, Nunan EA, Pianetti GA, Moreira-Campos LM, De Castro WV, Mertens-Talcott SU, Derendorf H. The Influence of Formulation on the Dissolution Profile of Diclofenac Sodium Tablets. Drug Dev Ind Pharm 2008; 32:1103-9. [PMID: 17012123 DOI: 10.1080/03639040600815152] [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] [Indexed: 10/24/2022]
Abstract
In attempts to design delayed-release tablets of diclofenac sodium, seven experimental batches were produced. The influence of super-disintegrant croscarmellose sodium (CCS), the granulation process, and the thickness of Eudragit L 100 coating film were evaluated. The values of dissolution efficiency and the similarity factor were used to compare the dissolution profiles of each experimental batch and the reference Voltaren. Both methods appear to be applicable and useful in comparing dissolution profiles. Based on such values four batches were considered similar when contrasted with the reference. The results suggest an optimal relationship between the amount of CCS and the thickness of the coating film, which provides appropriate dissolution rate of diclofenac sodium from the dosage forms.
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Affiliation(s)
- W V De Castro
- Fundação Ezequiel Dias. Rua Conde Pereira Carneiro 80, CEP 30610-150, Belo Horizonte, MG, Brazil.
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Santos LA, Oliveira MA, Faresin SM, Santoro IL, Fernandes ALG. Direct costs of asthma in Brazil: a comparison between controlled and uncontrolled asthmatic patients. ACTA ACUST UNITED AC 2008; 40:943-8. [PMID: 17653447 DOI: 10.1590/s0100-879x2006005000129] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2006] [Accepted: 04/10/2007] [Indexed: 11/22/2022]
Abstract
Asthma is a common chronic illness that imposes a heavy burden on all aspects of the patient's life, including personal and health care cost expenditures. To analyze the direct cost associated to uncontrolled asthma patients, a cross-sectional study was conducted to determine costs related to patients with uncontrolled and controlled asthma. Uncontrolled patient was defined by daytime symptoms more than twice a week or nocturnal symptoms during two consecutive nights or any limitations of activities, or need for relief rescue medication more than twice a week, and an ACQ score less than 2 points. A questionnaire about direct cost stratification in health services, including emergency room visits, hospitalization, ambulatory visits, and asthma medications prescribed, was applied. Ninety asthma patients were enrolled (45 uncontrolled/45 controlled). Uncontrolled asthmatics accounted for higher health care expenditures than controlled patients, US$125.45 and US$15.58, respectively [emergency room visits (US$39.15 vs US$2.70) and hospitalization (US$86.30 vs US$12.88)], per patient over 6 months. The costs with medications in the last month for patients with mild, moderate and severe asthma were US$1.60, 9.60, and 25.00 in the uncontrolled patients, respectively, and US$6.50, 19.00 and 49.00 in the controlled patients. In view of the small proportion of uncontrolled subjects receiving regular maintenance medication (22.2%) and their lack of resources, providing free medication for uncontrolled patients might be a cost-effective strategy for the public health system.
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Affiliation(s)
- L A Santos
- Disciplina de Pneumologia, Departamento de Medicina, Programa de Pós-graduação de Pneumologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brasil
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Oliveira MA, Otsuki DA, Auler JO. Comparison of pulse pressure variation and end-diastolic volume index in an experimental model of hemorrhagic shock in the pig. Crit Care 2008. [PMCID: PMC4088462 DOI: 10.1186/cc6312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Pereira EDG, Lima EMA, Souza FCS, Paulino MSM, Santos JB, Silva WG, Bezerra GS, Nóbrega MLS, Silva DAM, Filha FGT, Oliveira MA, Martins JCV. DESENVOLVIMENTO LOCAL E MANEJO DA CAATINGA NO ASSENTAMENTO HIPÓLITO, EM MOSSORÓ/RN. HOLOS 2007. [DOI: 10.15628/holos.2005.60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Nas últimas décadas tem havido uma preocupação muito grande com o tipo de desenvolvimento que vem sendo implementado pelos governos. A partir daí, criou-se a
noção de desenvolvimento sustentável, o qual se baseia em um crescimento econômico que seja acompanhado por eqüidade social e prudência ecológica. Em muitos projetos de
assentamentos têm sido desenvolvidos pesquisas com o objetivo de analisar como vem se processando tais experiências. Nossa investigação teve como meta verificar os impactos sócio-ambientais trazidos a partir do uso da caatinga no assentamento Hipólito, no município de Mossoró, no Oeste do RN. Preocupou-nos saber se naquele projeto de
assentamento tem ocorrido um desenvolvimento local, baseado em critérios de sustentabilidade. A metodologia empregada foi a realização de entrevistas com 29
assentados, o que corresponde a 20% da população total do assentamento, além de leituras de outros trabalhos e artigos de jornais. O trabalho está em fase de conclusão, porém a
partir de estudos de campo, realizados no mês de agosto de 2004, podemos apresentar os seguintes resultados: quanto ao aspecto sócio-econômico, os assentados têm na agricultura
de sequeiro a atividade econômica principal; a produtividade é baixa e a renda é complementada com “bicos”, aposentadorias e/ou com o dinheiro advindo dos planos de
assistência social do Governo Federal; a agricultura é realizada sem os devidos cuidados com o meio ambiente, e o desmatamento desordenado tem agravado ainda mais os
problemas presentes no bioma caatinga, tais como salinização, a desertificação e o desaparecimento de espécies da fauna e da flora. Face ao exposto, podemos concluir que a
realidade observada no assentamento aponta para a insustentabilidade sócio-econômica e ambiental naquela área.
Palavras-chave: sustentabilidade; caatinga; assentamento; desenvolvimento rural; desenvolvimento local.
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Saavedra MJ, Oliveira MA, Garcia J, Abreu P, Malcata A. [Atypical localization of osteoarthritis]. Acta Reumatol Port 2007; 32:184-5. [PMID: 17572654] [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: 05/15/2023]
Affiliation(s)
- M J Saavedra
- Servico de Reumatologia, Hospitais da Universidade de Coimbra, Interno de Reumatologia.
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Aikawa P, Perucci LS, Farsky SHP, Oliveira MA, Mauad T, Sannomiya P, Nakagawa NK. Leukocyte – endothelial interactions in mesenteric microcirculation of rats under different positive end expiratory pressure levels. Crit Care 2007. [PMCID: PMC3301189 DOI: 10.1186/cc5849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Anjos-Valotta EA, Martins JO, Oliveira MA, Casolari DA, Britto LRG, Tostes RC, Fortes ZB, Sannomiya P. Inhibition of tumor necrosis factor-alpha-induced intercellular adhesion molecule-1 expression in diabetic rats: role of insulin. Inflamm Res 2005; 55:16-22. [PMID: 16328103 DOI: 10.1007/s00011-005-0003-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVE The effects of insulin on intercellular adhesion molecule (ICAM)-1-mediated leukocyte adhesion and migration were investigated. METHODS Diabetic rats (alloxan, 42 mg/kg, i. v., 42 days), matching controls, and insulin (NPH, 2 IU/day for 12 days) treated diabetic rats were used. The internal spermatic fascia of the animals was used for direct vital microscopy of the microcirculation, and for quantitation of ICAM-1 expression by immunohistochemistry and reverse transcriptase-polymerase chain reaction (RT-PCR). Experiments were performed 2 h after the local injection of recombinant rat tumor necrosis factor-alpha (5 ng). RESULTS Relative to controls (C), diabetic (D) rats exhibited a reduced number of adhered (D: 2.2 +/- 0.4 and C: 14.1 +/- 0.6 cells/100 microm venule length, P < 0.001) and migrated leukocytes (D: 1.1 +/- 0.3 and C: 6.3 +/- 0.6 cells/1,000 microm (2), P < 0.001) accompanied by low expression of ICAM-1 in postcapillary venules (D: 18 +/- 4 and C: 51 +/- 7 arbitrary units, P < 0.001). There were no differences in ICAM-1 mRNA levels (D: 1.01 +/- 0.05 and C: 1.18 +/- 0.09 ICAM-1/GAPDH ratio, P > 0.05). Treatment of diabetic rats with insulin restored the number of adhered (10.9 +/- 1.2 cells/100 microm venule length), and migrated leukocytes (4.0 +/- 0.3 cells/1,000 microm (2)) as well as ICAM-1 expression (45 +/- 3 arbitrary units). Levels of mRNA for ICAM-1 remained unchanged after treatment (1.15 +/- 0.04 ICAM-1/GAPDH ratio). CONCLUSION Insulin modulates TNF-alpha-induced ICAM-1 expression on microvascular endothelium controlling, therefore, leukocyte adhesion and migration.
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Affiliation(s)
- E A Anjos-Valotta
- Research Division, Institute of Heart (InCor), LIM-11, University of São Paulo Medical School, Av. Dr. Enéas de Carvalho Aguiar 44, 05403-000 São Paulo, SP, Brazil
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Nasser LF, Reis EL, Oliveira MA, Bó GA, Baruselli PS. Comparison of four synchronization protocols for fixed-time bovine embryo transfer in Bos indicus × Bos taurus recipients. Theriogenology 2004; 62:1577-84. [PMID: 15511545 DOI: 10.1016/j.theriogenology.2004.03.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2003] [Accepted: 03/01/2004] [Indexed: 11/26/2022]
Abstract
The objective was to evaluate the effects of 400 IU of eCG given on Days 5 or 8 of an estrus synchronization protocol with progesterone-releasing intravaginal devices (PRID) and estradiol benzoate (EB), in recipients for fixed-time embryo transfer. A secondary objective was to determine the effects of injectable progesterone (given concurrent with EB treatment). Three-hundred-and-four crossbred Bos taurus x Bos indicus beef heifers were randomly assigned to one of four treatment groups (2 x 2 factorial design). At unknown stages of the estrous cycle (Day 0), all heifers received a progesterone-releasing intravaginal device (PRID), plus 2mg of EB i.m., with or without a concurrent treatment of 50mg of progesterone i.m. Heifers were further subdivided to receive 0.15 mg of d-cloprostenol (PGF) i.m. and 400 IU of eCG i.m. on Days 5 or 8. In all heifers, intravaginal devices were removed on Day 8 and 1mg of EB was given i.m. on Day 9 (Day 10 was arbitrarily considered the day of estrus). On Day 17, all heifers with >1 CL or a single CL with a diameter > or =18 mm (based on ultrasonographic examination), received an in vitro produced (IVP) embryo by non-surgical transfer. On Day 17, there was an effect of day of eCG administration on the number of CL (1.35 +/- 0.08 versus 1.13 +/- 0.04, for Day 5 versus Day 8, respectively; P = 0.02) and (in a subset of 154 heifers) mean (+/-S.E.M.) plasma progesterone concentrations (2.41 +/- 0.26 versus 1.74 +/- 0.19 ng/mL; P = 0.03). Although the proportion of recipients transferred/treated and pregnant/transferred did not differ among groups, the proportion of recipients pregnant/treated tended (P = 0.1) to be higher in heifers treated with eCG on Day 5 versus Day 8 (47.0% versus 40.7%, respectively). Progesterone treatment had no significant effect. In conclusion, treatment with eCG (and D-cloprostenol) on Day 5 significantly increased the number of CL and plasma progesterone concentrations and tended to increase pregnancy rates, although progesterone treatment had no significant effect.
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Affiliation(s)
- L F Nasser
- Departamento de Reprodução Animal, FMVZ-USP, CEP 05508-000 Saã Paulo, Brazil
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Bittencourt SA, Leal MDC, Jourdan-Gadelha AM, Oliveira MA. [Growth, diarrhea, and breastfeeding: the case of Vila do João]. CAD SAUDE PUBLICA 2004; 9 Suppl 1:7-13. [PMID: 15448816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2023] Open
Abstract
A prospective study on children under six months old living in an urban area on the periphery of Rio de Janeiro was carried out to examine the possible effect of diarrhea in differentiating the monthly growth rate in weight and height, according to type of nursing. The results seem to indicate that infants show a delay in growth of weight and height as a result of greater incidence and prevalence of diarrhea. It was also shown that human breast milk has a protective effect, reducing weight loss from episodes of diarrhea. The study concludes that the promotion of breastfeeding, together with the control of diarrheal diseases, can provide immediate benefits in improving the nutritional status of the infant population.
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Affiliation(s)
- S A Bittencourt
- Departamento de Epidemiologia e Métodos Quantitativos em Saúde, Escola Nacional de Saúde Pública, Rio de Janeiro, RJ, 21041-210, Brasil
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Astudillo V, Vargas IN, Oliveira MA. [Veterinary Services: how to establish quality assurance in developing countries]. REV SCI TECH OIE 2003; 22:661-78. [PMID: 15884596] [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: 05/02/2023]
Abstract
The authors put forward a methodological proposal for introducing quality assurance into animal health service provision in developing countries, based on the experience of Brazil. This proposal is based on three key elements. The first and most important element is the continuing development of those involved in the process, not only from the technical and administrative standpoint (know-how), but also in terms of modelling new forms of behaviour and attitudes for the provision of services (social and personal skills). This requires a culture of ethical values, motivation and team working to ensure that those involved in the process become committed, highly effective employees who identify with the Veterinary Service's objectives as if they were their own. The second key element of this methodology is to consider the various health services to be provided as processes and to treat each of these services as a set of activities, inputs and procedures that are systematically organised for delivering the specified animal health service. Working with processes not only makes it possible to properly plan each service, it also facilitates the identification, analysis and effective resolution of any problems that may arise while the service is being delivered. The third key element of the proposed methodology is the constant control and improvement of the processes making up the various health services, in particular using the Deming cycle (plan--do--check--act). The proposed strategy calls for realism and pragmatism in order to avoid creating false expectations by developing over-ambitious quality systems. It is advisable to avoid major publicity at the start of activities and to create well-defined, localised improvement programmes with anticipated results that are simple, direct and discernible to any observer within a short time frame. In the early stages, the term "quality" needs to be replaced with "better service delivery". It is necessary to ensure that staff is given some type of acknowledgement or feedback when positive results are achieved. Great emphasis must be placed on staff motivation and awareness-raising activities.
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Affiliation(s)
- V Astudillo
- Consultor en Salud Animal, Caixa Postal 5073, Copacabana, Río de Janeiro, RJ CEP 22070-970, Brasil
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Martinez L, Oliveira M, Miguel A, Cruz J, Rastelli V, Tostes R, Carvalho M, Nigro D, Fortes Z. Crit Care 2003; 7:P125. [DOI: 10.1186/cc2321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Oliveira M, Carvalho M, Nigro D, Tostes-passaglia R, Fortes Z. Crit Care 2003; 7:P128. [DOI: 10.1186/cc2324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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De Angelis K, Cestari IA, Oliveira MA, Fortes ZB, Irigoyen MC. A new approach to the study of latissimus dorsi muscle vasoreactivity in rats. Artif Organs 2001; 25:934-8. [PMID: 11903149 DOI: 10.1046/j.1525-1594.2001.06901.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In this paper we describe a new approach to the study of changes in latissimus dorsi (LD) muscle microcirculation in rats. The experiments were carried out under anesthesia in normal male Wistar rats (C, n = 6) and in diabetes-induced rats (D, streptozotocin, 50 mg/kg, i.v., n = 6). The left LD muscle was exposed in order to preserve the proximal tendon with its thoracodorsal nerve and artery. The animal was kept in lateral decubitus over a heating board attached to the mechanical stage of the intravital microscope. The ventral surface of the muscle was exposed over a transparent plate and fixing. The image of the LD vascularization was transferred to the camera system, which was connected to a microcomputer equipped with software (KS-300, Kontron Elektronik, Munich, Germany) for image storage. The vasoreactivity of LD was analyzed by changes in arteriole diameter after topically administered noradrenaline (0.3 microg/ml) and acetylcholine (300 microg/ml). The microscopic image provided by the described optical setup permitted clear resolution of capillary vessels and a stable preparation over a period of 3-4 h. D rats showed increased vasodilatation (29 +/- 2% vs. 18 +/- 2.6% in C) and similar vasoconstriction (25.5 +/- 3% vs. 27.5 +/- 3.3% in C) as compared to C rats. The method described in this paper is suitable for the study of changes in responsiveness of LD arterioles, vessels which represent the major site of vascular resistance and are most actively involved in the control of tissue perfusion.
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Affiliation(s)
- K De Angelis
- Department of Physiology, Institute of Health Basic Science, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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de Paiva TM, Ishida MA, Hanashiro KA, Scolaro RM, Gonçalves MG, Benega MA, Oliveira MA, Cruz AS, Takimoto S. Outbreak of influenza type A (H1N1) in Iporanga, São Paulo State, Brazil. Rev Inst Med Trop Sao Paulo 2001; 43:311-5. [PMID: 11781599 DOI: 10.1590/s0036-46652001000600002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
From June to July 1999 an outbreak of acute respiratory illness occurred in the town of Iporanga. Out of a total of 4,837 inhabitants, 324 cases were notified to the Regional Surveillance Service. Influenza virus was isolated from 57.1% of the collected samples and 100% seroconversion to influenza A (H1N1) was obtained in 20 paired sera tested. The isolates were related to the A/Bayern/07/95 strain (H1N1). The percentages of cases notified during the outbreak were 28.4%, 29.0%, 20.7%, 6.2% and 15.7% in the age groups of 0-4, 5-9, 10-14, 15-19 and older than 20 years, respectively. The highest proportion of positives was observed among children younger than 14 years and no cases were notified in people older than 65 years, none of whom had been recently vaccinated against influenza. These findings suggest a significant vaccine protection against A/Bayern/7/95, the H1 component included in the 1997-98 influenza vaccine for elderly people. This viral strain is antigenically and genetically related to A/Beijing/262/95, the H1 component of the 1999 vaccine. Vaccines containing A/Beijing/262/95 (H1N1) stimulated post-immunization hemagglutination inhibition antibodies equivalent in frequency and titre to both A/Beijing/262/95-like and A/Bayern/7/95-like viruses. Thus, this investigation demonstrates the effectiveness of vaccination against influenza virus in the elderly.
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Affiliation(s)
- T M de Paiva
- Laboratório de Vírus Respiratórios, Serviço de Virologia, Instituto Adolfo Lutz, São Paulo, SP, 01246-902, Brasil.
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Oliveira MA, Torgan LC, Lobo EA, Scharzbold A. Association of periphytic diatom species of artificial substrate in lotic environments in the Arroio Sampaio Basin, RS, Brazil: relationships with abiotic variables. BRAZ J BIOL 2001; 61:523-40. [PMID: 12071309 DOI: 10.1590/s1519-69842001000400002] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Associations of diatom species were identified, in the Arroio Sampaio Basin, Rio Grande do Sul, Brazil, based on monthly samplings over a year along Arroio Sampaio and its main tributaries, using polyamide thread as an artificial substrate. The species groupings showed four different environments: medium-lower course of Arroio Sampaio; and lower course of Arroio Teresinha; upper course of Arroio Sampaio; and lower course of Arroio Duvidosa. Among the physical and chemical variables measured, water pollution, particularly organic contamination and eutrophication, measured from BOD, and total phosphate concentration, respectively, appeared to be one of the most important environmental factors determining the composition and structure of species associations in the area studied.
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Affiliation(s)
- M A Oliveira
- Museu de Ciências Naturais da Fundação Zoobotânica do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Abstract
The objective of this study was to examine the follicular dynamics of five-eighths Girolando cows by observing the number of follicular development waves, days of emergence of those waves, diameters of the dominant and largest subordinate follicles and the processes of follicular selection and dominance. Ovarian follicle dynamics were monitored for 24 oestrous cycles in 12 cows, of 4 to 10 years of age, presenting regular oestrous cycles and with body scores between 3 and 4. Ovaries were observed daily for two consecutive oestrous cycles and follicles were measured with ultrasonographic equipment. The dominant follicle was considered to be that which presented a diameter > or = 10 mm for three consecutive days and on the day of wave emergence, when a group of follicles measuring 3-5 mm in diameter would appear. Of the 24 cycles monitored, 62.5% presented two waves of follicular development and 37.5% presented three waves. The cycles presenting two waves had an average duration of 20 days, with the emergence of the waves on days 1 and 9, whereas the cycles presenting three waves had an average duration of 22 days, with emergences on days 1, 10 and 16. For cycles with two waves, both the first and second dominant follicles reached an average size of 13.8 mm, with the first regressing on day 10 and the second ovulating around day 20. For cycles with three waves, the dominant follicles of the first and second waves reached maximum diameters of 11.8 and 12 mm, respectively, with the first regressing on day 11 and the second regressing on day 17. The third dominant follicle reached a maximum diameter of 12.4 mm on day 20, and ovulated on day 22. These results lead to the conclusion that the follicular dynamics of five-eighths Girolando cows are characterized by the presence of two to three waves of follicular growth.
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Affiliation(s)
- A Santos Filho
- Programa de Pós-Graduacao em Ciência Veterinária - Universidade Federal Rural de Pernambuco/Pernambuco-Brazil
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Stochmal A, Simonet AM, Macias FA, Oliveira MA, Abreu JM, Nash R, Oleszek W. Acylated apigenin glycosides from alfalfa (Medicago sativa L.) var. Artal. Phytochemistry 2001; 57:1223-1226. [PMID: 11454348 DOI: 10.1016/s0031-9422(01)00204-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Three flavones, including 4'-O-[2'-O-E-feruloyl-O-beta-D-glucuronopyranosyl(1-->2)-O-beta-D-glucuronopyranoside]apigenin, 7-O-beta-D-glucuronopyranosyl-4'-O-[2'-O-E-feruloyl-O-beta-D-glucuronopyranosyl(1-->2)-O-beta-D-glucuronopyranoside]apigenin and 7-O-beta-D-glucuronopyranosyl-4'-O-[2'-O-p-E-coumaroyl-O-beta-D-glucuronopyranosyl(1-->2)-O-beta-D-glucuronopyranoside]apigenin have been identified in alfalfa var. Artal. The known flavone 7-O-[2-O-E-feruloyl-[beta-D-glucuronopyranosyl(1-->3)]-O-beta-D-glucuronopyranosyl(1-->2)-O-beta-D-glucurono-pyranoside] apigenin was also isolated. The structures of these compounds were deduced on the basis of their spectral data.
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Affiliation(s)
- A Stochmal
- Department of Biochemistry, Institute of Soil Science and Plant Cultivation, ul. Czartoryskich 8, 24-100, Pulawy, Poland.
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Abstract
This paper examines the politics and practices of drug evaluation in Brazil. It traces the history of AIDS activists' influence on the organization of modern clinical trials and their scientific rationale. Using the Merck indinavir trial as a case study, the authors discuss how organized civil society has developed strategies to intervene in the course of drug evaluation trials, shaping them according to its own interests. Adopting translation sociology as the theoretical framework, the paper describes and analyzes the strategies used by activists from "Grupo PelaVidda/SP" (an AIDS NGO) to build a consensus concerning indinavir monotherapy's lack of efficacy. The study considers the several regulatory forums involved in dealing with the controversy during the trial period.
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Affiliation(s)
- M A Oliveira
- Núcleo de Assistência Farmacêutica, Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, 21041-210, Brasil.
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Abstract
The paper deals with a historical recovery of the genesis of Nursing and its development in Brazil in order to elucidate its influence in current nursing education and practice. It emphasizes the role played by the Rockefeller Foundation in the organization of public health nursing, the creation of the first school of nursing and the consolidation of nursing education and practice in hospitals. Certain public health policies were also examined, given their influence in the development of the profession. Nursing maintained a scientific and politically neutral position during the implementation of these health policies, possibly because of the non-critical makeup brought about by the adoption of the flexnerian model of teaching, in its link to Medicine.
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Abstract
Biological treatments of cassava meal processing wastewaters were investigated by aerobic and combined anaerobic/aerobic reactors. As a pretreatment, flocculation and sedimentation with aluminum salts and natural polyelectrolytes were employed, in order to change the effluent concentration of organics from 14,000 to 2000 mg/L in the bench scale reactor, with a hydraulic retention time of 37 min and an influent rate of 0.56 L/cm. Biological degradation by an activated sludge process was carried out using a reactor volume of 20 L. The observed organic matter removal rates were 89 to 93%, the cyanide removal was 95 to 99%, and the food to microorganisms ratio was found to be in the range of 0.166 to 0.242/day, with a hydraulic residence time of 1.4 to 4.2 days. As a posttreatment, flocculation and coagulation were employed, resulting in an effluent of good quality, as shown by turbidity measurements and negative tests for fecal and total coliforms.
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Affiliation(s)
- M A Oliveira
- Mestrado em Quimica Aplicada, Universidade Estadual de Maringa/UEM, 87020-900 Maringa, Parana, Brazil
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Toledo VP, Mayrink W, Gollob KJ, Oliveira MA, Costa CA, Genaro O, Pinto JA, Afonso LC. Immunochemotherapy in American cutaneous leishmaniasis: immunological aspects before and after treatment. Mem Inst Oswaldo Cruz 2001; 96:89-98. [PMID: 11285479 DOI: 10.1590/s0074-02762001000100010] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In this study, we evaluated the immune response of patients suffering from cutaneous leishmaniasis treated with two distinct protocols. One group was treated with conventional chemotherapy using pentavalent antimonium salts and the other with immunochemotherapy where a vaccine against cutaneous leishmaniasis was combined with the antimonium salt. Our results show that, although no differences were observed in the necessary time for complete healing of the lesions between the two treatments, peripheral blood mononuclear cells from patients treated by chemotherapy showed smaller lymphoproliferative responses at the end of the treatment than those from patients in the immunochemotherapy group. Furthermore, IFN-gamma production was also different between the two groups. While cells from patients in the chemotherapy group produced more IFN-gamma at the end of treatment, a significant decrease in this cytokine production was associated with healing in the immunochemotherapy group. In addition, IL-10 production was also less intense in this latter group. Finally, an increase in CD8+ -IFN-gamma producing cells was detected in the chemotherapy group. Together these results point to an alternative treatment protocol where healing can be induced with a decreased production of a potentially toxic cytokine.
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Affiliation(s)
- V P Toledo
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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42
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Takayanagui OM, Oliveira CD, Bergamini AM, Capuano DM, Okino MH, Febrônio LH, Castro E Silva AA, Oliveira MA, Ribeiro EG, Takayanagui AM. [Monitoring of vegetables sold in Ribeirão Preto, SP, Brazil]. Rev Soc Bras Med Trop 2001; 34:37-41. [PMID: 11340495 DOI: 10.1590/s0037-86822001000100006] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The ingestion of raw vegetables represents an important means of transmission of several infectious diseases. The objective of the present study was to perform a microbiological and parasitological evaluation of the vegetables commercially sold in the municipality of Ribeirão Preto, SP, Brazil. Of a total of 172 commercial concerns analyzed, 115 (67%) presented irregularities in the vegetables they sold, such as elevated concentration of fecal coliforms in 63%, presence of Salmonella in 9%, and presence of enteroparasites in 33%. The commercial concerns with the highest frequencies of vegetables showing inadequate results were: grocery stores (92%), CEAGESP (75%), fruit and vegetables stores (71%), traveling vendors (71%), fairs (69%), supermarkets (52%), and vegetable gardens (18%). The type of contamination was uniformly distributed among these commercial concerns. Most of the contaminated vegetables (61%) were from gardens located in the municipality of Ribeirão Preto. Considering the high frequency of fecal contamination and the potential risk of disease transmitted by vegetables, we suggest greater enforcement in the sanitary surveillance of the food offered to the population.
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Affiliation(s)
- O M Takayanagui
- Departamento de Neurologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP.
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43
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Abstract
The effects of stimulating the periaqueductal gray (PAG) against the rat tail flick reflex (TFR) was not changed significantly by the microinjection of lidocaine (5%/0.5 microl) into the medial (ME) or central (CE) nuclei of the amygdala. In contrast, lidocaine into the PAG blocked the effects from the ME or CE. The microinjection of naloxone (1 microg), beta-funaltrexamine (2 microg), propranolol (1 microg), or methysergide (1 microg), but not atropine (1 microg) or mecamylamine (1 microg) into the PAG significantly reduced the effects from the CE. The effect from the ME was not altered significantly by microinjecting naloxone into the PAG. Therefore, the ME or CE are unlikely to be intermediary stations for depression of the TFR evoked by stimulating the PAG, but the PAG may be a relay station for the effects of stimulating the ME or CE. The circuitry activated from the CE, but not the ME, utilises opioid mediation in the PAG. The effect from the CE depends at least on mu-opioid, serotonergic, and probably beta-adrenergic mediation in the PAG.
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Affiliation(s)
- M A Oliveira
- Department of Pharmacology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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44
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da Costa AR, Melo MC, Oliveira MA, Dias RN. [The nurses' work in the Family Health Program in Sobradinho II]. Rev Bras Enferm 2000; 53:127-30. [PMID: 12138839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
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45
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Fracolli LA, Nichiata LY, Takahashi RF, Oliveira MA, Gryschek AL. [Nursing in transmissible diseases: how to approach this topic in nursing graduation?]. Rev Esc Enferm USP 2000; 34:395-400. [PMID: 12033067 DOI: 10.1590/s0080-62342000000400012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study relates the attempts of the discipline Collective Health Nursing with focus in transmissible diseases to reorganize its teaching object, its theoretical and practical content, and its pedagogical atrategics, as a contribution to the formation of a nursing professional compromised with Collective Health. It describes the context of Collective Health in Brazil and the characteristics needed to improve the implementation of the Unified Health Care System in the Country. It also reports the content and the padagogical strategics used in the discipline and makes a critical analysis of its potentialities and limitations to the proposed goal.
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Affiliation(s)
- L A Fracolli
- Departamento de Enfermagem em Saúde Coletiva, Escola de Enfermagem, Universidade de São Paulo (EEUSP).
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46
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Oliveira MF, d'Avila JC, Torres CR, Oliveira PL, Tempone AJ, Rumjanek FD, Braga CM, Silva JR, Dansa-Petretski M, Oliveira MA, de Souza W, Ferreira ST. Haemozoin in Schistosoma mansoni. Mol Biochem Parasitol 2000; 111:217-21. [PMID: 11087932 DOI: 10.1016/s0166-6851(00)00299-1] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- M F Oliveira
- Departamento de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Cidade Universitária, 21941-590, Rio de Janeiro, RJ, Brazil.
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47
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Simpson AJ, Reinach FC, Arruda P, Abreu FA, Acencio M, Alvarenga R, Alves LM, Araya JE, Baia GS, Baptista CS, Barros MH, Bonaccorsi ED, Bordin S, Bové JM, Briones MR, Bueno MR, Camargo AA, Camargo LE, Carraro DM, Carrer H, Colauto NB, Colombo C, Costa FF, Costa MC, Costa-Neto CM, Coutinho LL, Cristofani M, Dias-Neto E, Docena C, El-Dorry H, Facincani AP, Ferreira AJ, Ferreira VC, Ferro JA, Fraga JS, França SC, Franco MC, Frohme M, Furlan LR, Garnier M, Goldman GH, Goldman MH, Gomes SL, Gruber A, Ho PL, Hoheisel JD, Junqueira ML, Kemper EL, Kitajima JP, Krieger JE, Kuramae EE, Laigret F, Lambais MR, Leite LC, Lemos EG, Lemos MV, Lopes SA, Lopes CR, Machado JA, Machado MA, Madeira AM, Madeira HM, Marino CL, Marques MV, Martins EA, Martins EM, Matsukuma AY, Menck CF, Miracca EC, Miyaki CY, Monteriro-Vitorello CB, Moon DH, Nagai MA, Nascimento AL, Netto LE, Nhani A, Nobrega FG, Nunes LR, Oliveira MA, de Oliveira MC, de Oliveira RC, Palmieri DA, Paris A, Peixoto BR, Pereira GA, Pereira HA, Pesquero JB, Quaggio RB, Roberto PG, Rodrigues V, de M Rosa AJ, de Rosa VE, de Sá RG, Santelli RV, Sawasaki HE, da Silva AC, da Silva AM, da Silva FR, da Silva WA, da Silveira JF, Silvestri ML, Siqueira WJ, de Souza AA, de Souza AP, Terenzi MF, Truffi D, Tsai SM, Tsuhako MH, Vallada H, Van Sluys MA, Verjovski-Almeida S, Vettore AL, Zago MA, Zatz M, Meidanis J, Setubal JC. The genome sequence of the plant pathogen Xylella fastidiosa. The Xylella fastidiosa Consortium of the Organization for Nucleotide Sequencing and Analysis. Nature 2000; 406:151-9. [PMID: 10910347 DOI: 10.1038/35018003] [Citation(s) in RCA: 538] [Impact Index Per Article: 22.4] [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: 11/08/2022]
Abstract
Xylella fastidiosa is a fastidious, xylem-limited bacterium that causes a range of economically important plant diseases. Here we report the complete genome sequence of X. fastidiosa clone 9a5c, which causes citrus variegated chlorosis--a serious disease of orange trees. The genome comprises a 52.7% GC-rich 2,679,305-base-pair (bp) circular chromosome and two plasmids of 51,158 bp and 1,285 bp. We can assign putative functions to 47% of the 2,904 predicted coding regions. Efficient metabolic functions are predicted, with sugars as the principal energy and carbon source, supporting existence in the nutrient-poor xylem sap. The mechanisms associated with pathogenicity and virulence involve toxins, antibiotics and ion sequestration systems, as well as bacterium-bacterium and bacterium-host interactions mediated by a range of proteins. Orthologues of some of these proteins have only been identified in animal and human pathogens; their presence in X. fastidiosa indicates that the molecular basis for bacterial pathogenicity is both conserved and independent of host. At least 83 genes are bacteriophage-derived and include virulence-associated genes from other bacteria, providing direct evidence of phage-mediated horizontal gene transfer.
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Affiliation(s)
- A J Simpson
- Instituto Ludwig de Pesquisa sobre o Câncer, São Paulo, SP, Brazil
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48
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Oliveira MA, Santiago HC, Lisboa CR, Ceravollo IP, Trinchieri G, Gazzinelli RT, Vieira LQ. Leishmania sp: comparative study with Toxoplasma gondii and Trypanosoma cruzi in their ability to initialize IL-12 and IFN-gamma synthesis. Exp Parasitol 2000; 95:96-105. [PMID: 10910710 DOI: 10.1006/expr.2000.4523] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We compared in vitro and in vivo induction of IL-12 (p40) and IFN-gamma by mouse cells stimulated with Toxoplasma gondii, Trypanosoma cruzi, and different species of Leishmania. Spleen cells cultured in vitro with T. cruzi or T. gondii, but not with Leishmania, produced IL-12 (p40) and IFN-gamma. Accordingly, IL-12 (p40) was produced by macrophages stimulated in vitro with live T. cruzi or T. gondii or membrane glycoconjugates obtained from trypomastigotes or tachyzoites. No IL-12 production was detected when macrophages were stimulated with live parasites or glycoconjugates from Leishmania, regardless of priming with IFN-gamma. In vivo, only T. cruzi and T. gondii induced the synthesis of IL-12 and IFN-gamma by mouse spleen cells after intraperitoneal injection of parasites. When injected subcutaneously, live Leishmania sp. induced IL-12 (p40) and IFN-gamma production by draining lymph node cells, albeit the levels were slightly lower than those induced by infection with T. gondii or T. cruzi using the same route. Together our results indicate that under different conditions, the intracellular protozoa T. gondii and T. cruzi are more potent stimulators of IL-12 and IFN-gamma synthesis by host immune cells than parasites of the genus Leishmania.
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Affiliation(s)
- M A Oliveira
- Departmento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 30161-970, Brazil
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49
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Abstract
LH/hCG receptors of the bovine cumulus/oocyte complex were quantified, and their maximum binding capacities and affinity constants were determined by Scatchard analysis. Specific binding of these gonadotropins to receptors in follicles of different sizes was also determined by radiolabeling techniques. A greater number of receptors was observed to be bound to LH than to hCG (P < 0.05); however, affinity constants did not significantly differ (P > 0.05). The results of specific binding of the gonadotropins presented differences in relation to follicle size. Differences in the specific binding values of LH and hCG were verified (P < 0.05), but when submitted to linear regression analysis, presented similar behaviors in relation to follicle size. It is concluded that receptors of bovine cumulus/oocyte complex cells bind specifically to LH/hCG, that binding capacity is inversely proportional to follicle size, and that the behavior of hCG is similar to that of LH, suggesting that hCG can also promote the maturation of bovine oocytes when used in concentrations greater than LH.
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Affiliation(s)
- A E Baltar
- Department of Veterinary Medicine, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil.
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50
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Brandileone MC, Vieira VS, Casagrande ST, Zanella RC, Guerra ML, Bokermann S, De Moraes JC, Baldacci ER, Chamone CB, Oliveira MA, De Matos DG, Arruda TM, Coelho MF, D'Avila SM, Dos Santos AR, Di Fabio JL. Prevalence of serotypes and antimicrobial resistance of streptococcus pneumoniae strains isolated from Brazilian children with invasive infections. Pneumococcal Study Group in Brazil for the SIREVA Project. Regional System for Vaccines in Latin America. Microb Drug Resist 2000; 3:141-6. [PMID: 9185141 DOI: 10.1089/mdr.1997.3.141] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
A laboratory surveillance study was developed in Brazil in 1993 to determine capsular types and antimicrobial susceptibility of Streptococcus pneumoniae strains. By studying 360 strains isolated from children with invasive infections in three different cities, 8 out of 34 types were identified as being the most prevalent and considered as the reference group for further analyses. This group comprised 77.7% of all strains studied, and includes the types 1, 5, 6A/B, 9V, 14, 19F, 19A, and 23F. The prevalence of this reference group was significantly higher among strains isolated from children with pneumonia than meningitis. Similarly, this group was more prevalent among strains isolated from children 3 to 6 years of age than from children under 2 years of age. Most strains (78.6%) were found to be susceptible to penicillin and only 1.4% showed high resistance to this antibiotic. However, intermediate resistance to penicillin was detected in 20% of the strains. This laboratory surveillance will be maintained and extended to other cities of Brazil to better define and monitor the trends of pneumococcal infections for proper control and prevention.
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Affiliation(s)
- M C Brandileone
- Bacteriology Division, Adolfo Lutz Institute, São Paulo, Brazil
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