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Vaiss DP, Rodrigues JL, Yurgel VC, do Carmo Guedes F, da Matta LLM, Barros PAB, Vaz GR, Dos Santos RN, Matte BF, Kupski L, Garda-Buffon J, Bidone J, Muccillo-Baisch AL, Sonvico F, Dora CL. Curcumin and quercetin co-encapsulated in nanoemulsions for nasal administration: A promising therapeutic and prophylactic treatment for viral respiratory infections. Eur J Pharm Sci 2024; 197:106766. [PMID: 38615970 DOI: 10.1016/j.ejps.2024.106766] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/19/2024] [Accepted: 04/12/2024] [Indexed: 04/16/2024]
Abstract
One of the most frequent causes of respiratory infections are viruses. Viruses reaching the airways can be absorbed by the human body through the respiratory mucosa and mainly infect lung cells. Several viral infections are not yet curable, such as coronavirus-2 (SARS-CoV-2). Furthermore, the side effect of synthetic antiviral drugs and reduced efficacy against resistant variants have reinforced the search for alternative and effective treatment options, such as plant-derived antiviral molecules. Curcumin (CUR) and quercetin (QUE) are two natural compounds that have been widely studied for their health benefits, such as antiviral and anti-inflammatory activity. However, poor oral bioavailability limits the clinical applications of these natural compounds. In this work, nanoemulsions (NE) co-encapsulating CUR and QUE designed for nasal administration were developed as promising prophylactic and therapeutic treatments for viral respiratory infections. The NEs were prepared by high-pressure homogenization combined with the phase inversion temperature technique and evaluated for their physical and chemical characteristics. In vitro assays were performed to evaluate the nanoemulsion retention into the porcine nasal mucosa. In addition, the CUR and QUE-loaded NE antiviral activity was tested against a murine β-COV, namely MHV-3. The results evidenced that CUR and QUE loaded NE had a particle size of 400 nm and retention in the porcine nasal mucosa. The antiviral activity of the NEs showed a percentage of inhibition of around 99 %, indicating that the developed NEs has interesting properties as a therapeutic and prophylactic treatment against viral respiratory infections.
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Affiliation(s)
- Daniela Pastorim Vaiss
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
| | - Jamile Lima Rodrigues
- Graduate Program in Food Science and Engineering, Federal University of Rio Grande, Rio Grande 96203-900 Brazil, RS, Brazil
| | - Virginia Campello Yurgel
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
| | - Frank do Carmo Guedes
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
| | | | | | - Gustavo Richter Vaz
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
| | - Raíssa Nunes Dos Santos
- Virology Laboratory of the Biotechnology Startup Núcleo Vitro, Porto Alegre 91040-600, Brazil; Laboratory of Bioinformatics and Biotechnology, Campus de Gurupi, Federal University of Tocantins, Gurupi 77402-970, Brazil
| | - Bibiana Franzen Matte
- Virology Laboratory of the Biotechnology Startup Núcleo Vitro, Porto Alegre 91040-600, Brazil
| | - Larine Kupski
- Laboratory for Mycotoxins and Food Science, School of Chemistry and Food, Federal University of Rio Grande - FURG, Italy Avenue 8 km, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil
| | - Jaqueline Garda-Buffon
- Laboratory for Mycotoxins and Food Science, School of Chemistry and Food, Federal University of Rio Grande - FURG, Italy Avenue 8 km, Campus Carreiros, 96203-900 Rio Grande, RS, Brazil
| | - Juliana Bidone
- Center of Chemical, Pharmaceutical and Food Sciences, Federal University of Pelotas, Campus Capão do Leão, 96010-610 Pelotas, RS, Brazil
| | - Ana Luiza Muccillo-Baisch
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil
| | - Fabio Sonvico
- Food and Drug Department, University of Parma, Parma, Italy.
| | - Cristiana Lima Dora
- Postgraduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, Brazil.
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Schimith LE, Machado da Silva V, Costa-Silva DGD, Seregni Monteiro LK, Muccillo-Baisch AL, André-Miral C, Hort MA. Preclinical toxicological assessment of polydatin in zebrafish model. Drug Chem Toxicol 2024:1-10. [PMID: 38311823 DOI: 10.1080/01480545.2024.2311287] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 01/23/2024] [Indexed: 02/06/2024]
Abstract
Polydatin (3,4',5-trihydroxystilbene-3-β-D-glucoside, piceid), a natural stilbenoid found in different plant sources, has gained increasing attention for its potential health benefits. However, prior to its widespread adoption in human therapeutics and consumer products, a comprehensive investigation of its toxicological effects is crucial. In this study, the toxicity of polydatin was investigated in a developmental toxicity test using zebrafish (Danio rerio) as a valuable model for preclinical assessments. We employed the Fish Embryo Test (FET test - OECD n°236) to investigate the effects of polydatin on survival, hatchability, development, and behavior of zebrafish embryo-larval stage. Remarkably, the results demonstrated that polydatin up to 435 μM showed no toxicity. Throughout the exposure period, zebrafish embryos exposed to polydatin exhibited normal development, with no significant mortality observed. Furthermore, hatching success and heartbeat rate were unaffected, and no morphological abnormalities were identified, signifying a lack of teratogenic effects and cardiotoxicity. Locomotion activity assessment revealed normal swimming patterns and response to stimuli, indicating no neurotoxic effects. Our study provides valuable insights into the toxicological profile of polydatin, suggesting that it may offer potential therapeutic benefits under a considerable concentration range. In addition, zebrafish model proves to be an efficient system for early-stage toxicological screening, guiding further investigations into the secure utilization of polydatin for human health and wellness.
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Affiliation(s)
- Lucia Emanueli Schimith
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande, Rio Grande, RS, Brasil
| | | | - Dennis Guilherme da Costa-Silva
- Programa de Pós-graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brasil
| | | | - Ana Luiza Muccillo-Baisch
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande, Rio Grande, RS, Brasil
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brasil
| | | | - Mariana Appel Hort
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande, Rio Grande, RS, Brasil
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brasil
- Programa de Pós-graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brasil
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3
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Araújo GDMS, Loureiro AIS, Rodrigues JL, Barros PAB, Halicki PCB, Ramos DF, Marinho MAG, Vaiss DP, Vaz GR, Yurgel VC, Bidone J, Muccillo-Baisch AL, Hort MA, Paulo AMC, Dora CL. Toward a Platform for the Treatment of Burns: An Assessment of Nanoemulsions vs. Nanostructured Lipid Carriers Loaded with Curcumin. Biomedicines 2023; 11:3348. [PMID: 38137569 PMCID: PMC10742090 DOI: 10.3390/biomedicines11123348] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/30/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Curcumin is a highly promising substance for treating burns, owing to its anti-inflammatory, antioxidant, antimicrobial, and wound-healing properties. However, its therapeutic use is restricted due to its hydrophobic nature and low bioavailability. This study was conducted to address these limitations; it developed and tested two types of lipid nanocarriers, namely nanoemulsions (NE-CUR) and nanostructured lipid carriers (NLC-CUR) loaded with curcumin, and aimed to identify the most suitable nanocarrier for skin burn treatment. The study evaluated various parameters, including physicochemical characteristics, stability, encapsulation efficiency, release, skin permeation, retention, cell viability, and antimicrobial activity. The results showed that both nanocarriers showed adequate size (~200 nm), polydispersity index (~0.25), and zeta potential (~>-20 mV). They also showed good encapsulation efficiency (>90%) and remained stable for 120 days at different temperatures. In the release test, NE-CUR and NCL-CUR released 57.14% and 51.64% of curcumin, respectively, in 72 h. NE-CUR demonstrated better cutaneous permeation/retention in intact or scalded skin epidermis and dermis than NLC-CUR. The cell viability test showed no toxicity after treatment with NE-CUR and NLC-CUR up to 125 μg/mL. Regarding microbial activity assays, free curcumin has activity against P. aeruginosa, reducing bacterial growth by 75% in 3 h. NE-CUR inhibited bacterial growth by 65% after 24 h, and the association with gentamicin had favorable results, while NLC-CUR showed a lower inhibition. The results demonstrated that NE-CUR is probably the most promising nanocarrier for treating burns.
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Affiliation(s)
| | - Ana Isabel Sá Loureiro
- CEB-Center of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Jamile Lima Rodrigues
- Graduate Program in Food Science and Engineering, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | | | | | - Daniela Fernandes Ramos
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | | | - Daniela Pastorim Vaiss
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | - Gustavo Richter Vaz
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | - Virginia Campello Yurgel
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | - Juliana Bidone
- Center of Chemical, Pharmaceutical, and Food Sciences, Federal University of Pelotas, Pelotas 96010-610, RS, Brazil
| | - Ana Luiza Muccillo-Baisch
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | - Mariana Appel Hort
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | - Artur Manuel Cavaco Paulo
- CEB-Center of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Cristiana Lima Dora
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
- Graduate Program in Food Science and Engineering, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
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Soares RD, dos Santos M, de Moura FR, Muccillo-Baisch AL, Baisch PRM, Soares MCF, da Silva Júnior FMR. Gestational and Neonatal Outcomes in Cities in the Largest Coal Mining Region in Brazil. Int J Environ Res Public Health 2022; 19:12107. [PMID: 36231407 PMCID: PMC9564524 DOI: 10.3390/ijerph191912107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 06/16/2023]
Abstract
Brazil has one of the largest mineral coal reserves in the world. More than 40% of this ore is in the Candiota Mine, in the extreme south of Brazil, which was previously identified as a hotspot of environmental pollution. In addition, an important part of Brazil's population suffers from socioeconomic vulnerability. Since there is no information on unfavorable gestational and neonatal outcomes associated with these problems, we conducted a cross-sectional study with 1950 mother-child binomials, aiming to evaluate the association between these outcomes and air pollution as well as socioeconomic, demographic and health variables in seven cities in the region. Of the total births, 11.6% were preterm and 9.5% of neonates had low birth weight (<2500 g). These conditions were also associated with skin color, previous abortions, birth type and prenatal care, as well as exposure to higher levels of coarse particulate matter (PM10) during the first trimester of pregnancy. Regarding air pollutants, although the daily limits for PM10 were exceeded on less than 5% of days, the annual average overtook the values proposed by WHO. Thus, we concluded that prematurity and low birth weight in this region are related to air pollution, and to socioeconomic variables and health care.
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Abrão LDC, Costa-Silva DG, Santos MGD, Cerqueira MBR, Badiale-Furlong E, Muccillo-Baisch AL, Hort MA. Toxicity evaluation of traditional and organic yerba mate ( Ilex paraguariensis A. St.-Hil.) extracts. J Toxicol Environ Health A 2022; 85:461-479. [PMID: 35189780 DOI: 10.1080/15287394.2022.2035873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Yerba mate (Ilex paraguariensis A. St.-Hil.) is an important source of biologically active compounds with pharmacological potential. The aim of this study was to examine the toxicity of different extracts obtained from either traditional or organic cultivated yerba mate in vitro and in vivo. Aqueous, ethanolic and methanolic extracts were obtained from commercial samples of yerba mate and total phenolic content was determined employing Folin-Ciocalteau reagent. The aqueous extracts presented higher content of total phenols, compared to ethanolic and methanolic extracts, and also demonstrated lower cytotoxicity, which is the basis for testing were carried out only using aqueous extracts. The main phenolic acids found in traditional aqueous (TA) extract were chlorogenic, gallic and protocatechuic acids. Gallic and hydroxybenzoic acids were detected in aqueous cultivated organic (OA) extract. Pretreatment with OA extract (100 µg/ml, 1 hr) was cytoprotective against rotenone-induced toxicity (1 µM). For in vivo toxicity assay, zebrafish embryos were exposed to OA or TA extracts (10-160 µg/ml) at 4 hr post fertilization. TA extract decreased embryos survival in a concentration-dependent manner, reduced the hatching rate at 40 µg/ml, increased edema frequency at 80 µg/ml and altered body curvature at 120 µg/ml. Further, TA extract produced locomotor disorders at concentrations equal to or greater than 10 µg/ml. In contrast, OA extract exhibited no apparent toxic effect on organogenesis and behavior up to 100 µg/ml. In summary, the OA cultivated extract showed the lowest cytotoxicity in vitro, enhanced reduction in rotenone-induced toxicity, and produced less toxicity in zebrafish embryos compared to the TA extract.
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Affiliation(s)
- Lian da Costa Abrão
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | - Dennis Guilherme Costa-Silva
- Programa de Pós-graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | - Michele Goulart Dos Santos
- Programa de Pós-graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | | | - Eliana Badiale-Furlong
- Programa de Pós-graduação em Engenharia e Ciência de Alimentos, Escola de Química e Alimentos, Universidade Federal do Rio Grande, Brazil
| | - Ana Luiza Muccillo-Baisch
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande, Rio Grande, Brazil
| | - Mariana Appel Hort
- Programa de Pós-graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande, Rio Grande, Brazil
- Programa de Pós-graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, Brazil
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Corrêa da Silva MG, Pires Ferreira S, Dora CL, Hort MA, Giroldo D, Prates DF, Radmann EM, Bemvenuti RH, Costa JAV, Badiale-Furlong E, Muccillo-Baisch AL. Phenolic compounds and antioxidant capacity of Pediastrum boryanum (Chlorococcales) biomass. Int J Environ Health Res 2022; 32:168-180. [PMID: 32200653 DOI: 10.1080/09603123.2020.1744113] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 03/11/2020] [Indexed: 06/10/2023]
Abstract
Bioactive compounds, synthesized by photosynthetic microorganisms, have drawn the attention of the pharmaceutical field. This study aimed at evaluating synthesis and in vitro antioxidant capacity of phenolic compounds produced by a microalgae species P. boryanum, which was grown in six different culture media (standard BG11, modified BG11/MBG11, standard WC, modified WC, WC*2 and basal). The highest concentrations of biomass (1.75 ± 0.01 g.L-1) and phenolic content (3.18 ± 0.00 mg.g-1) were obtained when P. boryanum was grown in MBG11 and phenolic acids were identified: gallic, protocatechuic, chlorogenic, hydroxybenzoic and vanillic ones. All extracts exhibited scavenger activity in the ABTS assay and inhibited peroxidase. However, phenolic compounds from P. boryanum grown in BG11 and MBG11 had the most potent scavenger activity in the DPPH assay. In sum, P. boryanum can be a new source of free phenolic compounds with potential antioxidant activity when grown in MBG11, since it yields high amounts of biomass and phenolic compounds.
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Affiliation(s)
- Marilia Garcez Corrêa da Silva
- Programa de Pós-Graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rio Grande, Brazil
| | - Shana Pires Ferreira
- Programa de Pós-Graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rio Grande, Brazil
| | - Cristiana Lima Dora
- Programa de Pós-Graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rio Grande, Brazil
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Mariana Appel Hort
- Programa de Pós-Graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rio Grande, Brazil
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Danilo Giroldo
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
- Programa de Pós-Graduação em Biologia dos Ambientes Aquáticos Continentais, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Denise Fontoura Prates
- Programa de Pós-Graduação em Engenharia e Ciência de Alimentos, Escola de Química e Alimentos Alimentos, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Elisangela Martha Radmann
- Programa de Pós-Graduação em Engenharia e Ciência de Alimentos, Escola de Química e Alimentos Alimentos, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Renata Heidtmann Bemvenuti
- Programa de Pós-Graduação em Engenharia e Ciência de Alimentos, Escola de Química e Alimentos Alimentos, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Jorge Alberto Vieira Costa
- Programa de Pós-Graduação em Engenharia e Ciência de Alimentos, Escola de Química e Alimentos Alimentos, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Eliana Badiale-Furlong
- Programa de Pós-Graduação em Engenharia e Ciência de Alimentos, Escola de Química e Alimentos Alimentos, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Ana Luiza Muccillo-Baisch
- Programa de Pós-Graduação em Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rio Grande, Brazil
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
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Dupont-Soares M, Dos Santos M, Garcia EM, Soares MCF, Muccillo-Baisch AL, da Silva Júnior FMR. Maternal, neonatal and socio-economic factors associated with intellectual development among children from a coal mining region in Brazil. Environ Geochem Health 2021; 43:3055-3066. [PMID: 33496915 DOI: 10.1007/s10653-021-00817-1] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Accepted: 01/07/2021] [Indexed: 06/12/2023]
Abstract
Coal is the most aggressive energy sources in the environment. Several adverse outcomes on children's health exposure to coal pollutants have been reported. Pollutants from coal power plants adversely affect the intellectual development and capacity. The present study aimed to evaluate the intellectual development and associated factors among children living a city under the direct influence (DI) and six neighboring municipalities under the indirect influence (II) of coal mining activity in the largest coal reserve of Brazil. A structured questionnaire was completed by the child's guardian, and Raven's Progressive Color Matrices were administered to each child to assess intellectual development. A total of 778 children participated. In general, no significant difference was observed between the two cities. The DI city had better socioeconomic conditions than the II municipalities according to family income (< 0.001). The prevalence of children who were intellectually below average or with intellectual disabilities was 22.9%, and there was no significant difference (p > 0.05) between municipalities. In both unadjusted and adjusted analyses, intellectual development was associated with maternal age, marital situation and maternal education level, birth weight, breast feeding, frequent children's daycare, paternal participation in children's care and child growth. Living in the DI area was not associated with intellectual disability. The results suggest that socioeconomic conditions and maternal and neonatal outcomes are more important than environmental factors for intellectual development of children living in a coal mining area.
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Affiliation(s)
- Marcela Dupont-Soares
- Programa de Pós Graduação eôôm Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá 102 Centro, Rio Grande-RS, 96203-900, Brazil
| | - Marina Dos Santos
- Programa de Pós Graduação eôôm Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá 102 Centro, Rio Grande-RS, 96203-900, Brazil
- Laboratório de Ensaios Farmacológicos E Toxicológicos - LEFT, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, Rio Grande - RS, CEP 96203-900, Brazil
| | - Edariane Menestrino Garcia
- Programa de Pós Graduação eôôm Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá 102 Centro, Rio Grande-RS, 96203-900, Brazil
| | - Maria Cristina Flores Soares
- Programa de Pós Graduação eôôm Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá 102 Centro, Rio Grande-RS, 96203-900, Brazil
- Laboratório de Ensaios Farmacológicos E Toxicológicos - LEFT, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, Rio Grande - RS, CEP 96203-900, Brazil
| | - Ana Luiza Muccillo-Baisch
- Programa de Pós Graduação eôôm Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá 102 Centro, Rio Grande-RS, 96203-900, Brazil
- Laboratório de Ensaios Farmacológicos E Toxicológicos - LEFT, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, Rio Grande - RS, CEP 96203-900, Brazil
| | - Flavio Manoel Rodrigues da Silva Júnior
- Programa de Pós Graduação eôôm Ciências da Saúde, Faculdade de Medicina, Universidade Federal do Rio Grande - FURG, Rua Visconde de Paranaguá 102 Centro, Rio Grande-RS, 96203-900, Brazil.
- Laboratório de Ensaios Farmacológicos E Toxicológicos - LEFT, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Av. Itália, km 8, Campus Carreiros, Rio Grande - RS, CEP 96203-900, Brazil.
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8
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Hädrich G, Vaz GR, Boschero R, Appel AS, Ramos C, Halicki PCB, Bidone J, Teixeira HF, Muccillo-Baisch AL, Dal-Bó A, da Silva Pinto L, Dailey LA, Da Silva PEA, Soares DR, Dora CL. Development of lipid nanocarriers for tuberculosis treatment: evaluation of suitable excipients and nanocarriers. Curr Drug Deliv 2021; 18:770-778. [PMID: 33583376 DOI: 10.2174/1567201818666210212092112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/30/2020] [Accepted: 12/24/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Lipid nanocarriers have been widely tested as drug delivery systems to treat diseases due to their bioavailability, controlled release, and low toxicity. For the pulmonary route, the Food and Drug Administration favors the use of substances generally recognized as safe, as well as biodegradable and biocompatible to minimize the possibility of toxicity. Tuberculosis (TB) remains a public health threat worldwide, mainly due to the long treatment duration and adverse effects. Therefore, new drug delivery systems to treat TB are needed. OBJECTIVE Physicochemical characterization of different lipid-based nanocarriers was used to optimize carrier properties. Optimized systems were incubated with Mycobacterium tuberculosis to assess whether lipid-based systems act as an energy source for the bacteria, which could be counterproductive to therapy. METHOD Several excipients and surfactants were evaluated to prepare different types of nanocarriers using high-pressure homogenization. RESULTS A mixture of trimyristin with castor oil was chosen as the lipid matrix after differential scanning calorimetry analysis. A mixture of egg lecithin and PEG-660 stearate was selected as an optimal surfactant system as this mixture formed the most stable formulations. Three types of lipid nanocarriers, solid lipid nanoparticles, nanostructured lipid carriers (NLC), and Nano emulsions, were prepared, with the NLC systems showing the most suitable properties for further evaluation. It may provide the advantages of increasing the entrapment efficiency, drug release, and the ability to be lyophilized, producing powder for pulmonary administration being an alternative to entrap poor water-soluble molecules. CONCLUSION Furthermore, the NLC system can be considered for use as a platform for the treatment of TB by the pulmonary route.
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Affiliation(s)
- Gabriela Hädrich
- Institute of Pharmacy, Martin Luther University Halle-Wittenberg, Halle (Saale). Germany
| | - Gustavo Richter Vaz
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande. Brazil
| | - Raphael Boschero
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande. Brazil
| | - Arthur Sperry Appel
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande. Brazil
| | - Carina Ramos
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande. Brazil
| | | | - Juliana Bidone
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, Pelotas. Brazil
| | - Helder Ferreira Teixeira
- Laboratório de Desenvolvimento Galênico, Programa de Pós-graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre. Brazil
| | - Ana Luiza Muccillo-Baisch
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande. Brazil
| | - Alexandre Dal-Bó
- Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Universidade do Extremo Sul Catarinense, Criciúma. Brazil
| | - Luciano da Silva Pinto
- Programa de Pós-Graduação em Biotecnologia, Universidade Federal de Pelotas, Pelotas. Brazil
| | - Lea-Ann Dailey
- Department of Pharmaceutical Technology and Biopharmacy, University of Vienna, Althanstraße 14, 1090 Vienna. Austria
| | | | - Daniela Ramos Soares
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande. Brazil
| | - Cristiana Lima Dora
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande. Brazil
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Tavella RA, DE Abreu VOM, Muccillo-Baisch AL, DA Silva JÚnior FMR. Prevalence of Illicit Drug Use During Pregnancy: A Global Perspective. AN ACAD BRAS CIENC 2020; 92:e20200302. [PMID: 33295578 DOI: 10.1590/0001-3765202020200302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 08/24/2020] [Indexed: 11/21/2022] Open
Abstract
The World Drug Report 2019 presented an alarming figure to the world: more than 5% of the world's population has been using some type of illicit drug, and that number is growing every year. While its use increases, its abuse during pregnancy has become a global public health problem, resulting in medical and social challenges related to maternal and child health. In this context, the objective of this review was to determine the prevalence of illicit drug use during gestation across the globe, alongside with a critical review of the evaluated studies. Research was performed by simultaneously searching terms ("pregnant woman OR pregnant" OR "gestation" OR "pregnancy" AND "illicit drugs" OR "street drugs") in the databases of the Scientific Electronic Library Online, PubMed, and Web of Science. Comparisons between studies were performed in software Statistica 10.0. The data presented worrying results in relation to the variation in prevalence of illicit drug use during pregnancy, when comparing studies based on interviews or questionnaires (self-reported) (1.65%) and studies based on toxicological analysis (12.28%). In addition, we emphasize the high prevalence (5.16%) of illicit drug use among adolescent pregnant women and the low number of studies on this population. This study reveals worrying data about pregnant drug-user population, mainly the underestimation of prevalence in studies that use only questionnaires or similar methods in comparison to studies that use toxicological analysis of biological matrices. This scenario reveals necessity for health systems in different countries to establish specific public health policies for this population.
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Affiliation(s)
- Ronan A Tavella
- Universidade Federal do Rio Grande, Instituto de Ciências Biológicas, Campus Carreiros, Av. Itália, Km 8, 96203-900 Rio Grande, RS, Brazil
| | - VictÓria O M DE Abreu
- Universidade Federal do Rio Grande, Faculdade de Medicina, Campus Saúde, Rua General Osório, s/n, 96201-900 Rio Grande, RS, Brazil
| | - Ana Luiza Muccillo-Baisch
- Universidade Federal do Rio Grande, Centro Regional para Estudos, Prevenção e Recuperação de Dependentes Químicos, Campus Saúde, Rua General Osório, s/n, 96201-900 Rio Grande, RS, Brazil
| | - FlÁvio M R DA Silva JÚnior
- Universidade Federal do Rio Grande, Instituto de Ciências Biológicas, Campus Carreiros, Av. Itália, Km 8, 96203-900 Rio Grande, RS, Brazil
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Arbo BD, André-Miral C, Nasre-Nasser RG, Schimith LE, Santos MG, Costa-Silva D, Muccillo-Baisch AL, Hort MA. Resveratrol Derivatives as Potential Treatments for Alzheimer's and Parkinson's Disease. Front Aging Neurosci 2020; 12:103. [PMID: 32362821 PMCID: PMC7180342 DOI: 10.3389/fnagi.2020.00103] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 03/26/2020] [Indexed: 12/21/2022] Open
Abstract
Neurodegenerative diseases are characterized by the progressive loss of neurons in different regions of the nervous system. Alzheimer’s disease (AD) and Parkinson’s disease (PD) are the two most prevalent neurodegenerative diseases, and the symptoms associated with these pathologies are closely related to the regions that are most affected by the process of neurodegeneration. Despite their high prevalence, currently, there is no cure or disease-modifying drugs for the treatment of these conditions. In the last decades, due to the need for the development of new treatments for neurodegenerative diseases, several authors have investigated the neuroprotective actions of naturally occurring molecules, such as resveratrol. Resveratrol is a stilbene found in several plants, including grapes, blueberries, raspberries, and peanuts. Studies have shown that resveratrol presents neuroprotective actions in experimental models of AD and PD, however, its clinical application is limited due to its rapid metabolism and low bioavailability. In this context, studies have proposed that structural changes in the resveratrol molecule, including glycosylation, alkylation, halogenation, hydroxylation, methylation, and prenylation could lead to the development of derivatives with enhanced bioavailability and pharmacological activity. Therefore, this review article aims to discuss how resveratrol derivatives could represent viable molecules in the search for new drugs for the treatment of AD and PD.
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Affiliation(s)
- Bruno Dutra Arbo
- Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Corinne André-Miral
- Université de Nantes, CNRS, Unité de Fonctionnalité et Ingénierie des Protéines (UFIP), UMR 6286, Nantes, France
| | | | - Lúcia Emanueli Schimith
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Rio Grande, Brazil
| | - Michele Goulart Santos
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Rio Grande, Brazil
| | - Dennis Costa-Silva
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Rio Grande, Brazil
| | | | - Mariana Appel Hort
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Rio Grande, Brazil
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11
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Vaz GR, Hädrich G, Bidone J, Rodrigues JL, Falkembach MC, Putaux JL, Hort MA, Monserrat JM, Varela Junior AS, Teixeira HF, Muccillo-Baisch AL, Horn AP, Dora CL. Development of Nasal Lipid Nanocarriers Containing Curcumin for Brain Targeting. J Alzheimers Dis 2018; 59:961-974. [PMID: 28731428 DOI: 10.3233/jad-160355] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Curcumin (CUR) has properties that can be useful for the treatment of Alzheimer's disease. Such properties are the inhibition of amyloid-β-protein (Aβ) aggregation, Aβ-induced inflammation, and activities of β-secretase and acetylcholinesterase. However, previous studies have revealed that CUR exhibited low bioavailability and difficulties in reaching the brain. OBJECTIVE To overcome such drawbacks, this study aims at developing nasal lipid nanocarriers loaded with CUR to effectively target the brain. METHODS The lipid nanocarriers (NE) were prepared using the hot solvent diffusion associated with the phase inversion temperature methods. Physico-chemical and morphological characterizations and in vitro drug release of the nanocarriers were carried out. The CUR permeation/retention was analyzed in Franz-type diffusion cell using porcine nasal mucosa. Confocal laser scan and histopathological studies were also performed. RESULTS The results showed that the NE sizes ranged between 18 nm and 44 nm with negative zeta potential. The CUR content ranged from 0.24 to 1.50 mg/mL with an encapsulation efficiency of 99%. The profiles of CUR release indicated a biphasic kinetics. CUR-NE permeation across the porcine nasal mucosa was higher when compared to free CUR. These results have also been validated through an analysis on a confocal microscopy. In addition, no toxicity on the nasal mucosa has been observed in a histopathological analysis. CONCLUSION These results suggest that it is possible to develop NEs with a high content of CUR and small particle size. Such an encapsulation increases the potential of CUR permeation across the porcine nasal mucosa.
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Affiliation(s)
- Gustavo Richter Vaz
- Laboratório de Nanotecnologia Aplicada à Saúde, Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Gabriela Hädrich
- Laboratório de Nanotecnologia Aplicada à Saúde, Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Juliana Bidone
- Laboratório de Desenvolvimento Galênico, Programa de Pós-graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Jamile Lima Rodrigues
- Laboratório de Nanotecnologia Aplicada à Saúde, Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Mariana Corrêa Falkembach
- Laboratório de Nanotecnologia Aplicada à Saúde, Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Jean-Luc Putaux
- Université Grenoble Alpes, Centre de Recherches sur les Macromolécules Végétales, Grenoble, France.,CNRS, Centre de Recherches sur les Macromolécules Végétales, Grenoble, France
| | - Mariana Appel Hort
- Laboratório de Nanotecnologia Aplicada à Saúde, Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - José Maria Monserrat
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Antônio Sergio Varela Junior
- Laboratório de Reprodução Animal Comparada -Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Helder Ferreira Teixeira
- Laboratório de Desenvolvimento Galênico, Programa de Pós-graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Ana Luiza Muccillo-Baisch
- Laboratório de Nanotecnologia Aplicada à Saúde, Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Ana Paula Horn
- Laboratório de Neurociências -Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
| | - Cristiana Lima Dora
- Laboratório de Nanotecnologia Aplicada à Saúde, Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande, RS, Brazil
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12
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Oliveira Penteado J, Martins Volcão L, Fernandes Ramos D, Manorle da Silva-Júnior F, Muccillo-Baisch AL. Atividade antimicrobiana de extratos de Ilex paraguariensis. Rev Epidemiol Control Infect 2016. [DOI: 10.17058/reci.v1i1.8335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
JUSTIFICATIVA E OBJETIVO: A Ilex paraguariensis St. Hilaire é conhecida popularmente como mate ou erva-mate, consumida popularmente no sul do Brasil, Paraguai e Argentina. Estudos têm evidenciado atividades bioativas da Ilex paraguariensis, como a atividade antioxidante, antinflamatória, diurética, digestiva, cicatricial e estimulante, conferindo um potencial terapêutico à mesma. Tais atividades bioativas da Ilex paraguariensis podem estar relacionadas com os compostos presentes na planta. Como exemplo a presença de polifenóis, flavonoides, xantinas, aminoácidos, vitaminas e minerais. Devido às informações contraditórias sobre os compostos das plantas que contribuem para a atividade antimicrobiana, o presente trabalho teve por objetivo determinar o potencial antimicrobiano dos extratos hexânico, metanólico e aquoso de Ilex paraguariensis, frente as bactérias gram-positivas e gram-negativas. METODOLOGIA: Para avaliação da atividade antimicrobiana foi realizada a técnica de microdiluição em caldo, frente às cepas Staphylococcus aureus (ATCC 12598), Klebsiella pneumoniae (ATCC 700603), Acinetobacter baumannii (ATCC 19606) e Pseudomonas aeruginosa (ATCC 15442). RESULTADOS: A atividade antimicrobiana de Ilex paraguariensis foi demonstrada pelo extrato hexânico e aquoso nos quais apresentaram atividade antimicrobiana frente a todos os microrganismos estudados. Sendo que, a melhor inibição para o extrato aquoso CMI = 25 µg/mL foi frente ao Staphylococcus aureus, enquanto para o extrato hexanico a CMI 100 µg/mL para a Acinetobacter baumannii. CONCLUSÃO: Portanto, a Ilex paraguariensis é uma fonte de pesquisa para novos agentes antimicrobianos naturais. Estes extratos são possíveis candidatos cuja atividade antimicrobiana poderá contribuir para o tratamento de doenças infecciosas causadas tanto por bactérias gram-positivas quanto negativas.
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Parker AG, Peraza GG, Sena J, Silva ES, Soares MCF, Vaz MRC, Furlong EB, Muccillo-Baisch AL. Antinociceptive Effects of the Aqueous Extract of Brugmansia suaveolens Flowers in Mice. Biol Res Nurs 2016; 8:234-9. [PMID: 17172322 DOI: 10.1177/1099800406293984] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 11/16/2022]
Abstract
The infusion of Brugmansia suaveolens, popularly known as trombeteira or cartucheira, has been used to treat pain in Brazil. The present study was conducted to test for its antinociceptive effects using the abdominal-writhing, formalin, tail-flick, and hot-plate tests in mice. The aqueous extract from B. suaveolens flowers administered intraperitoneally at doses of 100 and 300 mg/kg body weight significantly inhibited acetic acid-induced abdominal constrictions. An increase in hot-plate latency was also observed in animals receiving both doses (100 and 300 mg/kg). In the formalin test, both doses from the aqueous extract inhibited the first (0-5 min) and second phase (20-25 min). Tail-flick assays demonstrated that treatment of animals with plant extract induced attenuation of the response. These results suggest that the aqueous extract from B. suaveolens flowers produced antinociceptive effects, as demonstrated in the experimental models of nociception in mice. This supports popular medicinal uses of this plant as an analgesic.
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Affiliation(s)
- Alexander Garcia Parker
- Programa de Pós-Graduação em Enfermagem, Fundação Universidade Federal do Rio Grande, Rio Grande, Brazil
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15
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Galho AR, Cordeiro MF, Ribeiro SA, Marques MS, Antunes MFD, Luz DC, Hädrich G, Muccillo-Baisch AL, Barros DM, Lima JV, Dora CL, Horn AP. Protective role of free and quercetin-loaded nanoemulsion against damage induced by intracerebral haemorrhage in rats. Nanotechnology 2016; 27:175101. [PMID: 26965041 DOI: 10.1088/0957-4484/27/17/175101] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Intracerebral haemorrhage (ICH) is a worldwide public health problem. Experimental studies have shown that oxidative stress plays an important role in the pathogenesis of ICH and could represent a target for its treatment. However, the blood-brain barrier is an obstacle to be overcome, as it hampers the administration of compounds to the central nervous system. In this study, we compared the effects of a quercetin-loaded nanoemulsion (QU-N) with the free form of the drug (QU-SP) in a collagenase-induced ICH rat model. Quercetin (QU) is a polyphenol that has an antioxidant effect in vitro, but due to its high lipophilicity, it has low bioavailability in vivo. In this study, animals submitted or not to ICH were treated with a single intraperitoneal QU dose (free or nanoemulsion) of 30 mg kg(-1). Motor assessment was evaluated by the open field, foot fault and beam walking behavioural tests. 72 h after surgery the haematoma size was evaluated and biochemical measurements were performed. Animals treated with QU-N had a significant improvement in the beam walking and open field tests. Also, QU-N was able to reduce the size of the haematoma, preserving the activity of glutathione S-transferase (GST), increasing GSH content, and the total antioxidant capacity. QU-SP recovered locomotor activity and increased the GSH content and the total antioxidant capacity. Thus, it can be observed that QU presented antioxidant activity in both formulations, but the incorporation into nanoemulsions increased its antioxidant effect, which was reflected in the improvement of the motor skills and in the haematoma size decrement. These results suggest that the nanoemulsion containing QU developed in this study could be promising for future studies on treatments for ICH.
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Affiliation(s)
- A R Galho
- Programa de Pós-graduação em Ciências Fisiológicas - Fisiologia Animal Comparada, Universidade Federal do Rio Grande (FURG), Rio Grande, RS, 96210-900, Brazil
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da Silva Uebel L, Angelica Schmatz D, Goettems Kuntzler S, Lima Dora C, Luiza Muccillo-Baisch A, Alberto Vieira Costa J, Greque de Morais M. Quercetin and curcumin in nanofibers of polycaprolactone and poly(hydroxybutyrate-co-hydroxyvalerate): Assessment ofin vitroantioxidant activity. J Appl Polym Sci 2016. [DOI: 10.1002/app.43712] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lívia da Silva Uebel
- Laboratory of Microbiology and Biochemical; College of Chemistry and Food Engineering; Federal University of Rio Grande; Av. Italia, km 8 Carreiros Rio Grande RS 96203-900 Brazil
| | - Daiane Angelica Schmatz
- Laboratory of Microbiology and Biochemical; College of Chemistry and Food Engineering; Federal University of Rio Grande; Av. Italia, km 8 Carreiros Rio Grande RS 96203-900 Brazil
| | - Suelen Goettems Kuntzler
- Laboratory of Microbiology and Biochemical; College of Chemistry and Food Engineering; Federal University of Rio Grande; Av. Italia, km 8 Carreiros Rio Grande RS 96203-900 Brazil
| | - Cristiana Lima Dora
- Laboratory of Nanotechnology Applied to Health; Institute of Biological Science, Federal University of Rio Grande; Av. Italia, km 8 Carreiros Rio Grande RS 96203-900 Brazil
| | - Ana Luiza Muccillo-Baisch
- Laboratory of Nanotechnology Applied to Health; Institute of Biological Science, Federal University of Rio Grande; Av. Italia, km 8 Carreiros Rio Grande RS 96203-900 Brazil
| | - Jorge Alberto Vieira Costa
- Laboratory of Biochemical Engineering; College of Chemistry and Food Engineering; Federal University of Rio Grande; Av. Italia, km 8 Carreiros Rio Grande RS 96203-900 Brazil
| | - Michele Greque de Morais
- Laboratory of Microbiology and Biochemical; College of Chemistry and Food Engineering; Federal University of Rio Grande; Av. Italia, km 8 Carreiros Rio Grande RS 96203-900 Brazil
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Hädrich G, Vaz GR, Maidana M, Kratz JM, Loch-Neckel G, Favarin DC, Rogerio ADP, da Silva FMR, Muccillo-Baisch AL, Dora CL. Anti-inflammatory Effect and Toxicology Analysis of Oral Delivery Quercetin Nanosized Emulsion in Rats. Pharm Res 2015; 33:983-93. [DOI: 10.1007/s11095-015-1844-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 12/09/2015] [Indexed: 01/16/2023]
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Hädrich G, Monteiro SO, Rodrigues MR, de Lima VR, Putaux JL, Bidone J, Teixeira HF, Muccillo-Baisch AL, Dora CL. Lipid-based nanocarrier for quercetin delivery: system characterization and molecular interactions studies. Drug Dev Ind Pharm 2015; 42:1165-73. [DOI: 10.3109/03639045.2015.1118491] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Garcia EM, da Silva Junior FMR, Soares MCF, Muccillo-Baisch AL. Developmental effects of parental exposure to soil contaminated with urban metals. Sci Total Environ 2015; 520:206-212. [PMID: 25817757 DOI: 10.1016/j.scitotenv.2015.02.088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 01/09/2015] [Accepted: 02/25/2015] [Indexed: 06/04/2023]
Abstract
Soil is a highly complex material, and because of rapid population growth, intense industrial activity and petrochemical development, it has suffered from contamination with substances of various origins. These environmental contaminants may have detrimental effects on human health, particularly during development. Due to the ability to transmit contaminants to the fetus, evaluating the effects of exposure of pregnant women on the psychomotor development of their offspring is of particular interest. Therefore, this study aimed to investigate the effects of exposure of female rats to an urban soil influenced by the dispersion of air contaminants during periods of pre-pregnancy, pregnancy and lactation on offspring development. Using physiological, behavioral and hematological parameters, deleterious effects on offspring were assessed. In behavioral parameters, parental exposure during pregnancy and lactation resulted in no significant differences in the evaluated parameters when compared to the control group. In contrast, pups from the pre-pregnancy group displayed decreased locomotor and exploratory activity in addition to increased levels of anxiety. Furthermore, offspring of rats exposed to contaminated urban soil during pre-pregnancy demonstrated significant changes in weight gain and development length and a reduction in the number of platelets compared to controls. Significantly, pups born to mothers exposed to contaminated urban soil during the pregnancy displayed changes in birth weight, weight gain during the growth, development length, incisor eruption and opening of the ears in addition to a reduction in their physical performance and a change in the number of lymphocytes. These results clearly show the negative influence of parental exposure to contaminated urban soil on the general development of the rats during the periods studied. These data indicate that developing organisms are highly sensitive to external factors. Further, they demonstrate the utility of these various biomarkers for identifying and displaying toxic effects of exposure to contaminated soils.
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Affiliation(s)
- Edariane Menestrino Garcia
- Universidade Federal do Rio Grande - FURG, Programa de Pós-Graduação em Ciências da Saúde, Faculdade de Medicina, Rua Visconde de Paranaguá 102 Centro, Rio Grande, RS 96203-900, Brazil
| | - Flavio Manoel Rodrigues da Silva Junior
- Universidade Federal do Rio Grande - FURG, Programa de Pós-Graduação em Ciências da Saúde, Instituto de Ciências Biológicas, Av. Itália km 8 Bairro Carreiros, Rio Grande, RS 96203-900, Brazil
| | - Maria Cristina Flores Soares
- Universidade Federal do Rio Grande - FURG, Programa de Pós-Graduação em Ciências da Saúde, Instituto de Ciências Biológicas, Av. Itália km 8 Bairro Carreiros, Rio Grande, RS 96203-900, Brazil
| | - Ana Luiza Muccillo-Baisch
- Universidade Federal do Rio Grande - FURG, Programa de Pós-Graduação em Ciências da Saúde, Instituto de Ciências Biológicas, Av. Itália km 8 Bairro Carreiros, Rio Grande, RS 96203-900, Brazil.
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Corrêa da Silva MG, Soares MCF, Muccillo-Baisch AL. Self-medication in university students from the city of Rio Grande, Brazil. BMC Public Health 2012; 12:339. [PMID: 22568959 PMCID: PMC3444910 DOI: 10.1186/1471-2458-12-339] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Accepted: 04/24/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Self-medication is the use of medication without prescription, orientation, or supervision of a physician or dentist. Self-medication might become a serious health problem. The purpose of this study was to identify the prevalence and factors associated with self-medication among first and last-year students enrolled in healthcare and non-healthcare programs. METHODS A cross-sectional study was conducted at Universidade Federal do Rio Grande (FURG), state of Rio Grande do Sul, Brazil. Of 830 students in the sample, 95% answered the questionnaire - 789 students enrolled in 10 undergraduate programs. Mean age was 22 ± 6.17 years. The students answered a questionnaire covering socio-economic and demographic variables, use of medication, and medication knowledge. Information was collected on the conditions treated with medication, the medications used, and attitude towards self-medication. RESULTS Of 789 students, 86.4% self-medicated (88.5% of 446 healthcare students). There were no significant differences in self-medication between healthcare and non-healthcare students, nor between first and last-year students. Bivariate and multivariate analyses showed a significant association between self-medication and having children (p = 0.01), having a home pharmacy (p < 0.001) and adequate medication knowledge (p = 0.01). The most frequently used active ingredients were acetaminophen (paracetamol), dipyrone, aspirin, phytotherapic compounds, and tea. Illicit drug use was significantly associated with self-medication in the multivariate analysis. CONCLUSION The fact that being a healthcare student was associated with higher medication knowledge, but not with less self-medication, suggests that medication knowledge might contribute to increase self-medication. This should be taken into account when designing educational interventions relating to self-medication.
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Affiliation(s)
- Marília Garcez Corrêa da Silva
- Department of Health Sciences, Universidade Federal do Rio Grande (FURG), Rua General Osório, s/n Caixa Postal 474, CEP 96201-900 Centro, Rio Grande, RS, Brazil
| | - Maria Cristina Flores Soares
- Department of Health Sciences, Universidade Federal do Rio Grande (FURG), Rua General Osório, s/n Caixa Postal 474, CEP 96201-900 Centro, Rio Grande, RS, Brazil
| | - Ana Luiza Muccillo-Baisch
- Department of Health Sciences, Universidade Federal do Rio Grande (FURG), Rua General Osório, s/n Caixa Postal 474, CEP 96201-900 Centro, Rio Grande, RS, Brazil
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Muccillo-Baisch AL, Mirlean N, Carrazzoni D, Soares MCF, Goulart GP, Baisch P. Health effects of ingestion of mercury-polluted urban soil: an animal experiment. Environ Geochem Health 2012; 34:43-53. [PMID: 21451960 DOI: 10.1007/s10653-011-9389-z] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Accepted: 03/16/2011] [Indexed: 05/30/2023]
Abstract
Rio Grande, the southernmost Brazilian port and industrial center, is marked by mercury-polluted ground cover. This pollution varies spatially, with levels exceeding 1,000 μg kg(-1) in 30% of the urban territory. The risk of Hg impact as a result of deliberate and involuntary geophagy is increased by restrained urban conditions in combination with the large proportion of the population living at low-income levels. Laboratory tests have demonstrated that ingestion of Hg-polluted soil by rats results in significant alterations in animal health such as stagnation in body weight increase, and significant mercury accumulation in the liver and kidney. The consumption of Hg-contaminated urban soil also provoked changes in hematological profiles of experimental animals by increasing the number of platelets. The present study indicates the potential for the local population of Rio Grande living in mercury-polluted districts, specifically young children, to experience health disturbances.
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Affiliation(s)
- Ana Luiza Muccillo-Baisch
- Laboratory of Pharmacology and Toxicological Assays, Institute of Biology Science, Federal University of Rio Grande, Av. Italia km-08, Campus Carreiros, Rio Grande, RS CEP 96201-900, Brazil
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Muccillo-Baisch AL, Parker AG, Cardoso GP, Cezar-Vaz MR, Flores Soares MC. Evaluation of the Analgesic Effect of Aqueous Extract of Brugmansia suaveolens Flower in Mice: Possible Mechanism Involved. Biol Res Nurs 2010; 11:345-50. [DOI: 10.1177/1099800409354123] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The study was conducted to test the aqueous extract of Brugmansia suaveolens (AEBs) flowers for their antinociceptive effects in mice. In the hot plate test, a significant increase in reaction time for two doses of AEBs at 60, 90, 120, and 150 min after treatment was noted. Pretreatment of animals with naloxone (5 mg/kg, intraperitoneally [IP]) left the antinociceptive effect of AEBs at a dose of 100 mg/kg unaffected at 60, 90, 120, and 150 min after treatment and at a dose of 300 mg/kg at 30 min but not at 90, 120, and 150 min. In the writhing test, the AEBs significantly inhibited acetic acid—induced abdominal constriction and was equally potent at both doses. Pretreatment with naloxone (5 mg/kg, IP) left the antinociceptive effect of both doses of AEBs unaffected. Pretreatment with NG-nitro-L-arginine methyl ester (L-NAME; 20 mg/kg, IP) caused a significant change in the number of abdominal constrictions but did not change the antinociceptive effect of AEBs. Pretreatment of animals with methylene blue also did not change the effect of AEBs on the number of writhing movements in mice. Flumazenil (5 mg/kg, IP) antagonized the antinociceptive effects of diazepam and also reversed the antinociceptive effect of AEBs. AEBs showed a depressant effect on the central nervous system, and the treatment of mice with pentobarbital combined with AEBs increased the animals’ sleeping time in a dose-dependent manner. These results suggest that the antinociceptive activity of AEBs may be related in part to benzodiazepine receptors, although peripheral mechanisms cannot be excluded.
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Affiliation(s)
- Ana Luiza Muccillo-Baisch
- Instituto de Ciências Biológicas, Universidade
Federal do Rio Grande, Brazil, , Programa de Pós-Graduação em Ciências
Fisiológicas-Fisiologia Animal Comparada, Universidade Federal
do Rio Grande, Brazil, Programa de Pós-Graduação Ciências
da Saúde, Universidade Federal do Rio Grande, Brazil
| | - Alexander Garcia Parker
- Universidade Integrada do Alto Uruguai e das Missões,
Departamento de Enfermagem, Frederico Westphalen, RS, Brazil URI, Programa de Pós-Graduação em Enfermagem,
Universidade Federal do Rio Grande, Brazil
| | - Gianni Peraza Cardoso
- Instituto de Ciências Biológicas, Universidade
Federal do Rio Grande, Brazil, Programa de Pós-Graduação em Ciências
Fisiológicas-Fisiologia Animal Comparada, Universidade Federal do Rio
Grande, Brazil
| | - Marta Regina Cezar-Vaz
- Programa de Pós-Graduação Ciências
da Saúde, Universidade Federal do Rio Grande, Brazil, Escola de Enfermagem, Universidade Federal do Rio Grande,
Brazil, Programa de Pós-Graduação em Enfermagem,
Universidade Federal do Rio Grande, Brazil
| | - Maria Cristina Flores Soares
- Instituto de Ciências Biológicas, Universidade
Federal do Rio Grande, Brazil, Programa de Pós-Graduação Ciências
da Saúde, Universidade Federal do Rio Grande, Brazil
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Cezar-Vaz MR, Muccillo-Baisch AL, Soares MCF, Soares JFDS, da Costa VZ, Kerber NPDC, Bonow CA, Sant'Anna CF, Cardoso LS. [System of meanings about the purpose of family health work: a qualitative analysis]. Rev Esc Enferm USP 2010; 43:915-22. [PMID: 20085164 DOI: 10.1590/s0080-62342009000400025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This exploratory study was performed to understand the system of meanings about the purpose of the nursing and medical work performed by Family Health teams, in the cities of Rio Grande and Pelotas (Brazil). Data collection was performed by semi-directed individual interviews. The interviews of 82 participants were recorded, and analyzed. The nuclear meaning of the purpose, as an end transmuted into the product of collective work, was in agreement with the possibility of the community implementing changes and acquiring healthy individual and collective behaviors. This gives evidence of the component of ethics in the process, by means of categories such as solidarity and compassion. This led to a marker, in the text production, of the human condition in the construction of the work purpose. Through the analysis and critical discussion of the theme, this study contributes to the macro-dimension of developing competencies and adjustment to the health needs of society.
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Affiliation(s)
- Marta Regina Cezar-Vaz
- Escola de Enfermagem da Universidade Federal do Rio Grande-Campus Saúde, Rio Grande, RS, Brasil.
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24
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Azevedo LG, Peraza GG, Lerner C, Soares A, Murcia N, Muccillo-Baisch AL. Investigation of the anti-inflammatory and analgesic effects from an extract of Aplysina caissara, a marine sponge. Fundam Clin Pharmacol 2009; 22:549-56. [PMID: 18844726 DOI: 10.1111/j.1472-8206.2008.00624.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A variety of biologically active compounds with pharmacological applications has been reported to occur in marine sponges. The present study was undertaken to provide a set of data about an extract from Aplysina caissara, a Brazilian marine sponge. The antinociceptive and anti-inflammatory effects were investigated against different experimental models in mice. When evaluated against writhing test intraperitoneally (60 and 90 mg/kg), the extract significantly inhibited abdominal constriction by 33.7% and 41.4% respectively. In the formalin test (60 and 90 mg/kg), the extract of sponge inhibited 43.6% and 51.6% in the first phase and 98.2% and 97.2% in the second phase respectively. When evaluated against the hot plate test, both doses demonstrated activity. An increase in the hot plate latency was observed after 60 min. The anti-inflammatory effect was evaluated by formalin-induced mice paw edema. Extract from A. caissara (60 and 90 mg/kg) significantly reduced hind paw swelling. Mortality increased with increasing doses, with LD(50) of 212.2 mg/kg for intraperitoneal administration. These results demonstrated that the extract of the marine sponge A. caissara possesses antinociceptive and anti-edematogenic effects.
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Affiliation(s)
- Luciana Gutterres Azevedo
- Programa de Pós-Graduação em Ciências Fisiológicas-Fisiologia Animal Comparada, Departamento de Ciências Fisiológicas, Universidade Federal do Rio Grande, av. Itália, km 8, s/n, 96.201-900 Rio Grande, RS, Brazil
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25
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Tavares NUL, Bertoldi AD, Muccillo-Baisch AL. [Antimicrobial prescription in family health units in Southern Brazil]. CAD SAUDE PUBLICA 2009; 24:1791-800. [PMID: 18709220 DOI: 10.1590/s0102-311x2008000800008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Accepted: 12/26/2007] [Indexed: 11/22/2022] Open
Abstract
This paper describes antimicrobial prescription, clinical indications, and seasonal characteristics in primary health care. We performed a cross-sectional study in family health units in Bagé, Rio Grande do Sul State, Brazil, in July 2005 and January 2006. All medical prescriptions (n = 2,877) were analyzed, and the prevalence rates for antimicrobial prescription in winter and summer were 30.4% (95%CI: 28.5-32.4) and 21% (95%CI: 19.1-22.9), respectively. The most frequently prescribed antimicrobials were amoxicillin and sulfamethoxazole-trimethoprim. The main clinical indications for antimicrobial prescription were non-specific upper respiratory tract infections (22.5%), throat infections (20.8%), urinary tract infections (13.3%), otitis (8.5%), and sinusitis (7.5%). We observed differences between summer and winter in prescriptions for the same diseases. Seasonal differences between treatment profiles for the same diseases show the absence of a consistent antimicrobial prescription pattern in primary health care, contrary to World Health Organization guidelines, which advocate the establishment of protocols for antimicrobial use at all levels of care, as a strategy to prevent inadequate usage and the occurrence of strains that are resistant to available antimicrobials.
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Affiliation(s)
- Noemia U L Tavares
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal do Rio Grande, Rio Grande, Brasil.
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Noguez PT, Muccillo-Baisch AL, Cezar-Vaz MR, Soares MCF. Aborto espontâneo em mulheres residentes nas proximidades do parque industrial do município do Rio Grande - RS. Texto contexto - enferm 2008. [DOI: 10.1590/s0104-07072008000300004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Estudo transversal que objetivou identificar a prevalência de abortos espontâneos e fatores associados em mulheres em idade reprodutiva residentes nas proximidades de um parque industrial. A amostra foi de 285 mulheres expostas à poluição e 280 não expostas. Os dados foram coletados por meio de um instrumento com questões fechadas, em 2004 e analisados pelo teste qui-quadrado e regressão logística, mostraram prevalência de abortos espontâneos de 17,7%. Na análise bivariada associaram-se com o desfecho: idade da menarca (OR=0,26; p=0,0008); número de filhos (OR=4,00; p=0,001). Na análise multivariada a idade da menarca entre 11 e 13 anos (OR=0,32; p=0,005), presença de três ou mais filhos (OR=2,92; p=0,03) e história de baixo peso ao nascer (OR=2,39; p=0,049) associaram-se com aborto espontâneo. Não houve associação com o local de moradia nas proximidades do parque industrial. Sugere-se a realização de estudos com biomarcadores para identificar possível influência do ambiente sobre a saúde reprodutiva, nessa população, ou afastar definitivamente essa suspeita.
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Soares JFDS, Cezar-Vaz MR, Mendoza-Sassi RA, Almeida TLD, Muccillo-Baisch AL, Soares MCF, Costa VZD. Percepção dos trabalhadores avulsos sobre os riscos ocupacionais no porto do Rio Grande, Rio Grande do Sul, Brasil. CAD SAUDE PUBLICA 2008; 24:1251-9. [DOI: 10.1590/s0102-311x2008000600006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2007] [Accepted: 11/13/2007] [Indexed: 11/22/2022] Open
Abstract
Este é um estudo transversal, descritivo, com abordagem quantitativa, realizado no porto do Rio Grande, Rio Grande do Sul, Brasil e objetivou identificar a percepção, em uma amostra com 306 trabalhadores portuários avulsos, sobre risco à saúde no trabalho. A maioria dos trabalhadores portuários avulsos (93,46%) reconheceu que existem riscos à sua saúde no trabalho e isso foi independente do grau de instrução (p = 0,44), atividade desenvolvida (p = 0,47). Os riscos identificados no grupo geral de trabalhadores portuários avulsos foram queda de objetos suspensos (8,43 ± 2,47), ruídos (8,06 ± 2,32) e intempéries (8,05 ± 2,48). Os riscos significativamente diferentes entre as atividades foram: ruídos (p = 0,00), levantamento manual de carga (p = 0,00), ferramentas de trabalho (p = 0,00), componentes dos ternos em número abaixo do ideal (p = 0,03), ganho por produtividade (p = 0,00), ritmo de trabalho (p = 0,01), trabalho em altura (p = 0,00), deslocamento do trabalhador sobre as cargas (p = 0,00), escadas de acesso às embarcações (p = 0,00). Pode-se corroborar que o trabalho portuário avulso é insalubre e perigoso, e os riscos se apresentam aos trabalhadores em consonância com a atividade por eles desenvolvida.
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Cezar-Vaz MR, Muccillo-Baisch AL, de Souza Soares JF, Weis AH, da Costa VZ, Soares MCF. Nursing, environment and health conceptions: an ecosystemic approach of the collective health production in the primary care. Rev Lat Am Enfermagem 2008; 15:418-25. [PMID: 17653424 DOI: 10.1590/s0104-11692007000300009] [Citation(s) in RCA: 5] [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] [Received: 06/20/2006] [Accepted: 12/15/2006] [Indexed: 11/22/2022] Open
Abstract
The present study aimed to understand the meanings of the conceptual environment category, produced by nurses acting in the primary health care. A total of 30 nurses participated in the study. Data were collected through semi-directed interviews. The analysis was performed through the thematic method of the empirical meanings, based on the ecosystemic approach of work. The study showed the meanings of environment in the space limits of the human relations, whether they are produced at work, in the family scope or in the general community, in a transversal system that allows relationships of mutual exchange by the human condition itself in the society. Concluding, the development in the nursing area, in an ecosystemic approach of the human health, demands the construction of management strategies integrated to the environment for the promotion of health. The nursing science can be an ally in the construction of healthy and sustainable environments.
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Affiliation(s)
- Marta Regina Cezar-Vaz
- Laboratory of socio-environmental studies and processes and collective production of health, Foundation Federal University of Rio Grande, and Hospital Santa Casa of Rio Grande, Brazil.
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Cezar-Vaz MR, Weis AH, Costa VZD, Soares JFDS, Bonow CA, Cardoso LS, Sant'Anna CF, Soares MCF, Muccillo-Baisch AL. Estudo com enfermeiros e médicos da atenção básica à saúde: uma abordagem socioambiental. Texto contexto - enferm 2007. [DOI: 10.1590/s0104-07072007000400008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Trata-se de estudo quantitativo sobre o processo organizativo do trabalho na Atenção Básica de Saúde, a partir de uma abordagem socioambiental. Os objetivos foram analisar como enfermeiras e médicos identificam as estratégias para trabalharem a relação entre saúde e ambiente; que problemas ambientais influenciam a saúde das comunidades e como eles atuam com as comunidades frente aos mesmos. Foram realizadas entrevistas estruturadas com 36 enfermeiros e 19 médicos, seguindo-se uma análise quantitativa e contextual. O quesito referente ao conhecimento das situações ambientais que implicam em riscos à saúde recebeu média significativamente maior dos enfermeiros (p=0,000) e dos médicos (p=0,042). A falta de saneamento básico, presença de vetores, manejo inadequado de resíduos sólidos e ruas sem pavimentação foram os problemas ambientais da comunidade que os entrevistados atribuíram as melhores médias (p=0,000). Conclui-se que a estrutura organizativa do trabalho na atenção básica à saúde, ainda não é influenciada significativamente pela relação saúde e ambiente.
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Sena J, Soares MCF, Cezar-Vaz MR, Muccillo-Baisch AL. [Intersectorial policy concerning medicinal plants of the State of Rio Grande do Sul: as viewed by faculty members]. Rev Gaucha Enferm 2007; 28:62-9. [PMID: 17658059] [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: 05/16/2023] Open
Abstract
This survey aimed detecting the knowledge of university faculty members of the southern region of the state of Rio Grande do Sul, Brazil, in the Intersectorial Policy of Medicinal Plants of the State of Rio Grande do Sul. This quantitative survey used a sample size of 185 professors (61.7%). It was found that 91.50% of the interviewed professors did not know this policy. This suggests that, despite the existence of a policy on medicinal plants in the state of Rio Grande do Sul, is not well disseminated in the academia, which hinders its knowledge among faculty members.
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Affiliation(s)
- Janaína Sena
- Departamento de Ciências da Saúde, Universidade Regional Integrada do Alto Uruguai e das Missões (URI) de Frederico Westphalen
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Cavalli LS, Possette PL, Schmidt B, Kruel C, Grando M, Badiale Furlong E, Cezar-Vaz MR, Barros DM, Muccillo-Baisch AL. Fish Balistes capriscus skin extract-induced relaxation in mesenteric arterial bed of rat. J Ethnopharmacol 2003; 88:215-220. [PMID: 12963145 DOI: 10.1016/s0378-8741(03)00225-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The vasorelaxing activity of the aqueous extract of fish Balistes capriscus skin (AEBc) on mesenteric arterial bed (MAB) of rats was studied. The bolus injections of AEBc (bolus of 5.1, 10.2, 20.5, and 41.1mg) significantly inhibited, in a concentration-dependent manner, the maximal contractile response induced by methoxamine (30 microM) in MAB. The vasodilatation action of AEBc is not mediated through beta-adrenoceptors or cyclo-oxigenase, since it was not affected by propranolol (20 microM) or diclofenac sodium (3 microM). The vasodilator response induced by subsequent addition of AEBc Balistes capriscus in bolus was significantly reduced in water infusion for endothelium removal. Treatment with an inhibitor of NO synthase (L-NAME, 10 microM) decreased AEBc effect. The guanylate cyclase inhibitor methylene blue (MB, 100 microM) had no significant effect on AEBc-induced vasodilatation. These results suggest that the vasorelaxing effect of AEBc is mediated by endothelium-dependent (NO/EDRF) and endothelium-independent neurally induced vasorelaxation from nonadrenergic and noncholinergic nerves (NO).
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Affiliation(s)
- L S Cavalli
- Departamento de Ciências Fisiológicas, Universidade Federal do Rio Grande, Rio Grande, Rua Eng. Alfredo Huch 475, Rio Grande, 96201-900, Brazil
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