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Resumo Introdução: Os efeitos na saúde a médio e longo prazo da infeção por SARS-CoV-2 têm sido cada vez mais reconhecidos. O nosso objetivo foi avaliar a qualidade de vida associada à saúde em doentes críticos tratados em enfermaria avançada e determinar fatores associados a maus resultados. Métodos: A qualidade de vida associada à saúde em doentes SARS-CoV-2 foi avaliada 3 e 6 meses após a alta, através do Questionário Respiratório de Saint George e o EuroQoL 5-dimensões 3-níveis. A prevalência de ansiedade, depressão e stress pós-traumático foi avaliado nas duas visitas. Doentes com questionário Respiratório de Saint George normal ou com melhoria significativa (grupo 1) foram comparados com os que não melhoraram (grupo 2) aos 6 meses. Resultados: Cento e dezassete doentes foram avaliados. A mediana de idades foi 64 anos e 61,5% eram homens. Entre T3 e T6 foi observada redução no score total e domínios específicos do Questionário Respiratório de Saint George (p <0,001). Melhoria longitudinal foi observada no domínio da mobilidade (p = 0,029) e na Escala Visual Analógica (p=0,006) do EuroQoL 5-dimensões 3-níveis. A prevalência de ansiedade, depressão e stress pós-traumático reduziram ao longo do tempo (p <0,05). Após 6 meses, 4,3% dos doentes não tinham retomado ao trabalho e 23% estavam no grupo 2. O grupo 2 teve piores resultados no Questionário Respiratório de Saint George (<0,001); e nos domínios da mobilidade (p = 0,002), auto-cuidado (p <0,001) e atividades habituais (p = 0,014) do EuroQoL 5-dimensões 3-níveis. A regressão logística efetuada para comparar os grupos 1 e 2 não identificou associação entre os resultados e a idade, género, comorbilidades, demora média, ordem de não intubação, pior PaO2/FiO2 durante a hospitalização e técnica de suporte respiratório. Conclusão: Vários domínios na qualidade de vida associada à saúde parecem ser afetados após uma infeção grave por SARS-CoV-2 mas a melhoria parece ser a norma para a maioria dos doentes.

Abstract Introduction: Mid- and long-term health effects of SARS-CoV-2 infection have been increasingly recognised. Our goal was to evaluate health-related quality of life in critically ill patients, treated in a non-ICU setting, and associated factors with poor outcomes. Methods: Health-related quality of life in SARS-CoV-2 survivors was evaluated 3 and 6 months after discharge, using St. George's Respiratory Questionnaire and EuroQoL 5-Dimension 3-Level. Anxiety, depression, and post-traumatic stress disorder prevalence was accessed at both visits. Patients with normal or significant improvement on St. George's Respiratory Questionnaire (group 1) were compared to those who did not improve (group 2) at 6 months. Results: 117 patients were analysed. Median age was 64 years and 61.5% were male. Between T3 and T6 was observed a reduction in total and specific domain scores of St. George's Respiratory Questionnaire (p <0.001). Longitudinal improvement was observed in mobility domain (p = 0.029) and Visual Analogic Scale (p = 0.006) of EuroQoL 5-Dimension 3-Level. Rates of anxiety, depression, and post-traumatic stress disorder decline over time (p <0.05). After 6 months, 4.3% of participants have not return to work and 23% were in group 2. Group 2 had worst results in St. George's Respiratory Questionnaire (p<0.001); and in mobility (p = 0.002), self-care (p <0.001), and usual activities (p = 0.014) of EuroQoL 5-Dimension 3-Level domains. Logistic regression comparing groups 1 and 2 did not find association between outcomes and age, gender, comorbidities, length of stay, do not intubate order, worst PaO2/FiO2 during hospitalization and respiratory support technique. Conclusion: Several domains of health-related quality of life seem to be impaired after SARS-CoV-2 severe infection but improvement seems to be the rule for most patients.

https://doi.org/10.24950/rspmi.1653

Prevalence of human cryptosporidiosis in the Americas: systematic review and meta-analysis
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Jann, Higor Wilson

; Cabral-Castro, Mauro Jorge

; Costa, João Victor Barreto

; Alencar, Alba Cristina Miranda de Barros

; Peralta, José Mauro

; Peralta, Regina Helena Saramago

Revista do Instituto de Medicina Tropical de São Paulo

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2022, Volume 64 elocation e70

Abstract: En | Text: En | PDF: En

ABSTRACT Cryptosporidiosis is a disease caused by the Cryptosporidium spp parasite. As some species of Cryptosporidium have a wide host spectrum, the characterization of the pathogen at the species or genotype level is of great importance to define the sources of infection for humans and the potential for public health. This study investigated the diversity of the genus Cryptosporidium spp. in humans from all over the American continent and observed whether the method used to search for the parasite influenced the prevalence found in the Americas. This systematic review was carried out using the Pubmed, Science direct, Lilacs, Scielo, and Scopus databases with publications from January 1, 2010, to December 31, 2020. For data synthesis, the PRISMA flowchart was used and for the meta-analysis we used the MetaXL program. Of the selected publications, 57, 9 and 16 belonged to the region of South, Central and North America, respectively. The prevalence found for South, Central, and North America was 7%, 7%, and 8%, respectively, when analyzing publications that used only the microscopy method. When we analyzed the publications that used immunological and molecular methods, we found prevalences of 10%, 9%, and 21% for South, Central, and North America, respectively. The C. hominis subtype IbA10G2 was the most reported in the American continent, followed by subtype IeA11G3T3 and, for C. parvum, subtype IIaA15G2RI was the most reported. In conclusion, Cryptosporidium spp. is present throughout the American continent and its prevalence is higher when immunological and/or molecular methods are used, in addition to direct microscopic examination.

https://doi.org/10.1590/s1678-9946202264070

Glycidyl Methacrylate-ethylene Glycol Dimethacrylate Copolymers with Varied Pore Structures Prepared with Different Reaction Parameters
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Costa, Luciana C.

; Monteiro, Rafaela C.

; Castro, Helena M. A.

; Ribeiro, Tatiane S.

; Oliveira, Mirian A.

; Torquato, Ezaine C. C.

; Arcanjo, Maria E.

; Marques, Monica R. C.

Materials Research

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2020, Volume 23 N. 3 elocation e20190550

Abstract: En | Text: En | PDF: En

Abstract Copolymers based on glycidyl methacrylate (GMA) are considered attractive as sorbents because the epoxy groups can be easily converted into other groups. Studies involving the influence of the synthesis parameters on the morphological characteristics of these copolymers are scarce. This work investigates the synthesis of copolymers of poly(GMA-co-EGDMA) with different porosity degrees obtained by varying the synthesis parameters. GMA-EGDMA copolymers were synthesized by suspension polymerization employing varied conditions and characterized by measuring apparent density, surface area and pore volume distribution, optical and scanning electron microcopies, FT-IR, thermogravimetry and titration of epoxide rings. The copolymer with highest surface area and pore volume (260.4 m2/g and 0.5 cm3/g) was prepared employing cyclohexane as diluent, 80% EGDMA in monomeric composition and 100% of dilution degree. There was a relation between the epoxide content of the copolymers determined by titration and the residue content formed in the first decomposition stage.

https://doi.org/10.1590/1980-5373-mr-2019-0550 1078 downloads

Pyrazolyl-Tetrazoles and Imidazolyl-Pyrazoles as Potential Anticoagulants and their Integrated Multiplex Analysis Virtual Screening
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Lourenço, André L. P. G.

; Vegi, Percilene F.

; Faria, Jéssica V.

; Pinto, Gustavo S. P.

; Santos, Maurício S. dos

; Sathler, Plínio C.

; Saito, Max S.

; Santana, Marcos

; Dutra, Tatiana P. P.

; Rodrigues, Carlos R.

; Monteiro, Robson Q.

; Bernardino, Alice M. R.

; Castro, Helena C.

Journal of the Brazilian Chemical Society

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jan 2019, Volume 30 N. 1 Pages 33 - 47

Abstract: En | Text: En | PDF: En

This article reports a novel virtual screening algorithm seeking the rational identification of novel lead anticoagulants. Seven 5-(3-methyl-1-aryl-1H-pyrazol-4-yl)-1H-tetrazoles and seven novel 1-aryl-4-(4,5-dihydro-1H-imidazol-2-yl)-3-methyl-1H-pyrazoles were obtained in three steps starting from arylhydrazine hydrochlorides as raw materials in good yields: 50-72% and 50-85%, respectively. All compounds were submitted to an in silico target-base pipeline named integrated multiplex analysis virtual screening (IMA-VS), which comprises the evaluation of their (i) fitting physicochemical properties to the chemical environment of the target enzyme; (ii) active-site homing electrostatic potential to the target enzyme; (iii) structural fitting to the target active site through molecular docking; and (iv) overall absorption, distribution, metabolism, excretion and toxicity (ADMET) profile. After the virtual selection of potential anticoagulant hits, all molecules were synthesized and candidates were evaluated in vitro for their anticoagulant and hemolytic profile. The most promising candidate pointed out by IMA-VS was compound 1-(3',4'-dichlorophenyl)-4-(4,5-dihydro-1H-imidazol-2-yl)-3-methyl-1H-pyrazole that shown to display factor Xa (FXa)-specific inhibitory activity in vitro, acting as an uncompetitive inhibitor with an inhibition constant (Ki) = 61.16 ± 12.96 µM, in addition to the lowest hemolytic activity of the series. Further experiments revealed the antithrombotic activity of this compound in an in vivo model of arterial thrombosis induced by FeCl3.

https://doi.org/10.21577/0103-5053.20180150 940 downloads

Left atrial size and contractile function in healthy dogs and dogs with chronic mitral valve disease
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Petrus, Lilian C.

; Castro, Jacqueline R.

; Mantovani, Matheus M.

; Gimenes, André M.

; Duarte, Caio N.

; Goldfeder, Guilherme T.

; Schwartz, Denise S.

; Larsson, Maria Helena M.A.

Pesquisa Veterinária Brasileira

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aug 2018, Volume 38 N. 8 Pages 1622 - 1630

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO: O tamanho e a função atrial esquerda estão relacionados em humanos com eventos cardiovasculares adversos e prognóstico nas principais cardiopatias. Na doença valvar crônica de mitral (DVCM) em cães, o átrio esquerdo é a câmara cardíaca mais comprometida. Portanto, os objetivos deste estudo foram comparar os principais parâmetros de aumento atrial esquerdo (relação átrio esquerdo/aorta, índice do diâmetro atrial esquerdo e índice do volume atrial esquerdo) e função contrátil de átrio esquerdo (velocidade máxima e integral de velocidade da onda A do fluxo transvalvar mitral, fração atrial e força de ejeção atrial) nos diferentes estágios da doença valvar; correlacionar diâmetro e volume atrial esquerdo e os índices de função contrátil atrial esquerda com as variáveis ecocardiográficas preditivas de insuficiência cardíaca em cães (velocidade máxima da onda E do fluxo transvalvar mitral, relação E/TRIV, relação E/E’par e relação E/A). Os resultados mostraram que com a evolução progressiva da doença valvar crônica de mitral, ocorre dilatação progressiva do átrio esquerdo, bem caracterizada pela relação átrio esquerdo/aorta e pelo índice de volume atrial esquerdo. O índice do diâmetro atrial esquerdo, o índice de volume atrial esquerdo e a relação átrio esquerdo/aorta correlacionam-se, positivamente, com a velocidade da onda E e com a relação E/TRIV, que são importantes índices de função diastólica. Os índices de função contrátil do átrio esquerdo aumentam à medida que a DVCM evolui. Os índices de função contrátil do átrio esquerdo apresentam correlação positiva com os índices de pressão de enchimento ventricular esquerdo, exceção feita à fração atrial.

ABSTRACT: In humans, left atrial enlargement and reduced contractile functions are associated with adverse cardiovascular events and a poor prognosis in many dilatation of the left atrium occurs with the gradual evolution of chronic mitral valve disease and is well diseases. The left atrium is the most compromised cardiac chamber in dogs with chronic mitral valve disease (CMVD). Therefore, this study aimed to compare the main parameters of left atrial enlargement (left atrium/aorta ratio, left atrial diameter and volume indices) and contractile function (transmitral flow peak velocity A wave and time velocity integral, atrial fraction, and atrial ejection force) at different stages of valve disease, and correlate the left atrial diameter, volume, and contractile function indices with echocardiographic variables predictive of heart failure in dogs (transmitral flow peak velocity E wave, E wave/IVRT ratio, E wave/E´wave ratio, and E wave/A wave ratio). The results showed that progressive characterized by the left atrium/aorta ratio and left atrium volume index. The left atrial diameter and volume indices and left atrium/aorta ratio correlated positively with the transmitral flow peak velocity E wave and E wave/IVRT ratio, which are important indices of diastolic function. The left atrial contractile function indices increased as CMVD evolved. Except for the atrial fraction, the left atrial contractile function indices correlated with the left ventricular filling pressure indices.

https://doi.org/10.1590/1678-5150-pvb-5114 1693 downloads

Improvement the nutritional status of pre-school children following intervention with a supplement containing iron, zinc, copper, vitamin A, vitamin C and prebiotic
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Castro, Luiza Carla Vidigal

; Costa, Neuza Maria Brunoro

; Sant’Anna, Helena Maria Pinheiro

; Ferreira, Célia Lucia de Luces Fortes

; Franceschini, Sylvia do Carmo de Castro

Ciência & Saúde Coletiva

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feb 2017, Volume 22 N. 2 Pages 359 - 368

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Este estudo investigou os efeitos de um produto em pó fortificado com vitaminas e minerais e suplementado com inulina, no estado nutricional de ferro e vitamina A de 110 crianças pré-escolares do município de Viçosa, MG, Brasil. As crianças, de 2 a 5 anos de idade, foram submetidos às avaliações antropométrica (peso e altura), bioquímica (eritrócitos, hemoglobina, volume corpuscular médio - VCM, hemoglobina corpuscular média - HCM, ferro sérico, ferritina e retinol sérico) e dietética (pesagem direta dos alimentos, recordatório de 24 h e registro alimentar), no início e ao final de uma intervenção de 45 dias. O suplemento (30 g) foi ministrado diariamente no lanche da tarde, diluído em 100 ml de água, 5 vezes/semana, fornecendo 30% das doses diárias recomendadas de ferro, zinco, cobre e vitaminas A e C. Os dados dietéticos e bioquímicos foram comparados pelo teste de Wilcoxon e, para os dados antropométricos, utilizou-se o teste-t pareado. Os valores de z-escore (peso e altura), eritrócitos, hemoglobina, VCM, HCM e ferritina foram significativamente maiores após a intervenção; nenhuma mudança foi observada no retinol sérico. O suplemento aumentou significativamente a ingestão de energia, macro e micronutrientes e foi eficaz na melhoria do estado nutricional de ferro e antropométrico.

Abstract This study investigated the effects of a vitamin and mineral fortified powder product supplemented with inulin, on the iron and vitamin A status of 110 pre-schools childrens in Viçosa, MG, Brazil. The 2 to 5-year-old children were submitted to anthropometric (weight and height), biochemical (erythrocytes, hemoglobin, mean corpuscular volume – MCV, mean corpuscular hemoglobin - MCH, serum iron, ferritin and serum retinol) and dietary (direct food weighing, 24 h recall, and food intake record) evaluations, at the beginning and at the end of a 45-day intervention. The supplement (30 g) was provided daily as part of the afternoon snack, diluted in 100 mL of water, 5 times/week and it supplied 30% of the recommended daily doses of iron, zinc, copper and vitamins A and C. Dietary and biochemical data was compared by the Wilcoxon test, and anthropometric data by the paired t-test. Values of z-scores for weight and height, erythrocytes, hemoglobin, MCV, MCH and ferritin were significantly higher after intervention; no change was observed in serum retinol. The prebiotic-containing supplement significantly increased the intake of energy, macro and micronutrients, and was effective in improving the iron and anthropometric status.

https://doi.org/10.1590/1413-81232017222.15902015 749 downloads

Improvement the nutritional status of pre-school children following intervention with a supplement containing iron, zinc, copper, vitamin A, vitamin C and prebiotic
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Castro, Luiza Carla Vidigal

; Costa, Neuza Maria Brunoro

; Sant’Anna, Helena Maria Pinheiro

; Ferreira, Célia Lucia de Luces Fortes

; Franceschini, Sylvia do Carmo de Castro

Ciência & Saúde Coletiva

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feb 2017, Volume 22 N. 2 Pages 359 - 368

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

https://doi.org/10.1590/1413-81232017222.15902015 2474 downloads

No correlation was observed between vitamin D levels and disability of patients with multiple sclerosis between latitudes 18° and 30° South
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Fragoso, Yara Dadalti

; Adoni, Tarso

; Alves-Leon, Soniza Vieira

; Apostolos-Pereira, Samira L.

; Arruda, Walter Oleschko

; Brooks, Joseph B. Bidin

; Cal, Henrique S. Rodrigues

; Damasceno, Carlos A. Albuquerque

; Gama, Paulo Diniz

; Goncalves, Marcus V. Magno

; Jesus, Carlos A. da Silva de

; Machado, Suzana C. Nunes

; Mansur, Letícia Fezer

; Matta, Andre P. da Cunha

; Mendes, Maria Fernanda

; Morales, Rogerio Rizo

; Nobrega-Jr, Adaucto Wanderley da

; Parolin, Monica K. Fiuza

; Peres, Mario Pietro

; Ribeiro, Marlise de Castro

; Ruocco, Heloisa Helena

; Scherpenhuijzen, Simone

; Siquinelli, Fabio

; Stoney, Patrick N.

; Varela, Daniel Lima

; Eboni, Audred Cristina Biondo

; Spessotto, Caroline Vieira

; Rocha, Elisa Teixeira da

; Lacerda, Pamela Emanuele

Arquivos de Neuro-Psiquiatria

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jan 2017, Volume 75 N. 1 Pages 3 - 8

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO Objetivo: Vitamina D assumiu um papel central na pesquisa e tratamento da esclerose múltipla (EM). O objetivo deste estudo foi avaliar os níveis séricos de vitamina D de pacientes com EM e controles que residem em uma área tropical. Métodos: Foram analisados dados de 535 pacientes com EM e 350 indivíduos controle em 14 cidades próximas ao Trópico de Capricórnio. Resultados: O valor médio da determinação de 25-OH vitamina D foi 26,07 ± 10,27 ng/mL para controles e 28,03 ± 12,19 ng/mL para pacientes com EM. Não houve correlação entre os níveis de vitamina D e o grau de incapacidade ao longo da duração da doença. Conclusão: Pelo menos na região que cerca o Trópico de Capricórnio, os níveis séricos de vitamina D estão entre valores de 20 a 30 ng/mL tanto para controles quanto para pacientes com EM.

ABSTRACT Objective: Vitamin D has taken center stage in research and treatment of multiple sclerosis (MS). The objective of the present study was to assess the serum vitamin D levels of a large population of patients with MS and controls living in a restricted tropical area. Methods: Data from 535 patients with MS and 350 control subjects were obtained from 14 cities around the Tropic of Capricorn. Results: The mean serum 25-OH vitamin D level was 26.07 ± 10.27 ng/mL for the control subjects, and 28.03 ± 12.19 ng/mL for patients with MS. No correlation was observed between vitamin D levels and the disability of patients over the disease duration. Conclusion: At least for the region around the Tropic of Capricorn, serum levels of vitamin D typically are within the range of 20 to 30 ng/mL for controls and patients with MS.

https://doi.org/10.1590/0004-282x20160173 3011 downloads

Development of a novel resin with antimicrobial properties for dental application
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CASTRO, Denise Tornavoi de

; HOLTZ, Raphael Dias

; ALVES, Oswaldo Luiz

; WATANABE, Evandro

; VALENTE, Mariana Lima da Costa

; SILVA, Cláudia Helena Lovato da

; REIS, Andréa Cândido dos

Journal of Applied Oral Science

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oct 2014, Volume 22 N. 5 Pages 442 - 449

Abstract: En | Text: En | PDF: En

The adhesion of biofilm on dental prostheses is a prerequisite for the occurrence of oral diseases. Objective: To assess the antimicrobial activity and the mechanical properties of an acrylic resin embedded with nanostructured silver vanadate (β-AgVO3). Material and Methods: The minimum inhibitory concentration (MIC) of β-AgVO3 was studied in relation to the species Staphylococcus aureus ATCC 25923, Streptococcus mutans ATCC 25175, Pseudomonas aeruginosa ATCC 27853, and Candida albicans ATCC 10231. The halo zone of inhibition method was performed in triplicate to determine the inhibitory effect of the modified self-curing acrylic resin Dencor Lay - Clássico®. The surface hardness and compressive strength were examined. The specimens were prepared according to the percentage of β-AgVO3 (0%-control, 0.5%, 1%, 2.5%, 5%, and 10%), with a sample size of 9x2 mm for surface hardness and antimicrobial activity tests, and 8x4 mm for the compression test. The values of the microbiologic analysis were compared and evaluated using the Kruskal-Wallis test (α=0.05); the mechanical analysis used the Shapiro-Wilk's tests, Levene's test, ANOVA (one-way), and Tukey's test (α=0.05). Results: The addition of 10% β-AgVO3 promoted antimicrobial activity against all strains. The antimicrobial effect was observed at a minimum concentration of 1% for P. aeruginosa, 2.5% for S. aureus, 5% for C. albicans, and 10% for S. mutans. Surface hardness and compressive strength increased significantly with the addition of 0.5% β-AgVO3 (p<0.05). Higher rates of the nanomaterial did not alter the mechanical properties of the resin in comparison with the control group (p>0.05). Conclusions: The incorporation of β-AgVO3 has the potential to promote antimicrobial activity in the acrylic resin. At reduced rates, it improves the mechanical properties, and, at higher rates, it does not promote changes in the control.

https://doi.org/10.1590/1678-775720130539 2810 downloads

10.

Synthesis and in vitro evaluation of new benzenesulfonamides as antileishmanial agents
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Borges, Julio C.

; Carvalho, Adriana V.

; Bernardino, Alice M. R.

; Oliveira, César D.

; Pinheiro, Luiz C. S.

; Marra, Roberta K. F.

; Castro, Helena C.

; Wardell, Solange M. S. V.

; Wardell, James L.

; Amaral, Veronica F.

; Canto-Cavalheiro, Marilene M.

; Leon, Leonor L.

; Genestra, Marcelo

Journal of the Brazilian Chemical Society

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may 2014, Volume 25 N. 5 Pages 980 - 986

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Este artigo descreve a síntese e a atividade antileishmania de novos derivados pirazolil benzenossulfonamídicos. Estes foram elucidados por métodos espectrométricos. Alguns compostos mostraram uma atividade in vitro significativa contra Leishmania amazonensis, destacando-se o derivado 1e. Nenhum dos derivados pirazolil benzenossulfonamídicos mostraram qualquer toxicidade em macrófagos murinos.

This paper describes the synthesis and the antileishmanial activity of new pyrazolyl benzenesulfonamide derivatives. These were elucidated by spectrometric methods. Some compounds showed a significant in vitro activity against Leishmania amazonensis, highlighting the derivative 1e. These pyrazolyl benzenesulfonamide derivatives did not show any toxicity in murine macrophage.

https://doi.org/10.5935/0103-5053.20140062 1388 downloads

11.

Simultaneous analysis of saturated and unsaturated fatty acids present in pequi fruits by capillary electrophoresis
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Barra, Patrícia M. de Castro

; Oliveira, Marcone A. L. de

; Nery-Enes, Bárbara

; Cardoso, Leandro de M.

; Cesário, Cristiane do C.

; Moreira, Ana V. B.

; Pinheiro-Sant'Ana, Helena M.

; Peluzio, Maria do C. G.

Química Nova

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2013, Volume 36 N. 9 Pages 1430 - 1433

Abstract: En | Text: En | PDF: En

In the current study, an alternative method has been proposed for simultaneous analysis of palmitic, stearic, oleic, linoleic, and linolenic acids by capillary zone electrophoresis (CZE) using indirect detection. The background electrolyte (BGE) used for the analysis of these fatty acids (FAs) consisted of 15.0 mmol L−1 NaH2PO4/Na2HPO4 at pH 6.86, 4.0 mmol L−1 SDBS, 8.3 mmol L−1 Brij 35, 45% v/v acetonitrile (can), and 2.1% n-octanol. The FAs quantification of FAs was performed using a response factor approach, which provided a high analytical throughput for the real sample. The CZE method, which was applied successfully for the analysis of pequi pulp, has advantages such as short analysis time, absence of lipid fraction extraction and derivatization steps, and no significant difference in the 95% confidence intervals for FA quantification results, compared to the gas chromatography official method (AOCS Ce 1h-05).

2955 downloads

12.

HIV-1 Reverse Transcriptase: a potential target for marine products
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Miceli, Leonardo A.

; Souza, Alessandra M. T. de

; Rodrigues, Carlos R.

; Paixão, Izabel C. N. P.

; Teixeira, Valéria L.

; Castro, Helena C.

Revista Brasileira de Farmacognosia

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aug 2012, Volume 22 N. 4 Pages 881 - 888

Abstract: En | Text: En | PDF: En

HIV-1 reverse transcriptase (HIV-1 RT) is a therapeutic target for the treatment of HIV-positive individuals or those already showing AIDS symptoms. In this perspective, the identification of new inhibitors for this enzyme is of great importance in view of the growing viral resistance to the existing treatments. This resistance has compromised the quality of life of those infected with multidrug-resistant strains, whose treatment options are already limited, putting at risk these individuals lives. The literature has recognized marine organisms and their products as natural sources for the identification of new therapeutic options for different pathologies. In this brief review, we consider the structure of HIV-1 RT and its most common inhibitors, as well as some marine diterpenes originally reported as HIV-1 RT inhibitors to encourage the identification and development of new marine antiviral prototypes.

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13.

Synthesis and antileishmanial activity of new 1-aryl-1H-pyrazole-4-carboximidamides derivatives
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Santos, Maurício S. dos

; Gomes, Adriana O

; Bernardino, Alice M. R

; Souza, Marcos C. de

; Khan, Misbahul A

; Brito, Monique A. de

; Castro, Helena C

; Abreu, Paula A

; Rodrigues, Carlos R

; Léo, Rosa M. M. de

; Leon, Leonor L

; Canto-Cavalheiro, Marilene M

Journal of the Brazilian Chemical Society

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feb 2011, Volume 22 N. 2 Pages 352 - 358

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

A quimioterapia para as leishmanioses, doenças causadas por protozoários do gênero Leishmania, ainda permanece ineficiente em diversos tratamentos. Portanto, existe a necessidade de pesquisa por novos fármacos. Nesse trabalho, foram sintetizados derivados 1-aril-1H-pirazol-4-carboximidamidas, avaliadas as atividades leishmanicida e os efeitos citotóxicos in vitro, e realizado um estudo de relação estrutura-atividade (REA) com a série de compostos. O composto 2 apresentou um perfil de atividade que pode ser melhorado através de estratégias de modificação molecular da química medicinal.

Chemotherapy for leishmaniasis, diseases caused by protozoa of the genus Leishmania, remains inefficient in several treatments. So there is a need to search for new drugs. In this work, we have synthesized 1-aryl-1H-pyrazole-4-carboximidamides derivatives and evaluated antileishmanial activities in vitro, as well as cytotoxic effects. Structure-activity relationship (SAR) studies were carried out with all the compounds of the series. Compound 2 showed an activity profile that can be improved through medicinal chemistry strategies.

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14.

Stretching and joint mobilization exercises reduce call-center operators' musculoskeletal discomfort and fatigue
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Lacaze, Denise Helena de Castro

; Sacco, Isabel de C. N.

; Rocha, Lys Esther

; Pereira, Carlos Alberto de Bragança

; Casarotto, Raquel Aparecida

Clinics

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2010, Volume 65 N. 7 Pages 657 - 662

Abstract: En | Text: En | PDF: En

AIM: We sought to evaluate musculoskeletal discomfort and mental and physical fatigue in the call-center workers of an airline company before and after a supervised exercise program compared with rest breaks during the work shift. INTRODUCTION: This was a longitudinal pilot study conducted in a flight-booking call-center for an airline in São Paulo, Brazil. Occupational health activities are recommended to decrease the negative effects of the call-center working conditions. In practice, exercise programs are commonly recommended for computer workers, but their effects have not been studied in call-center operators. METHODS: Sixty-four call-center operators participated in this study. Thirty-two subjects were placed into the experimental group and attended a 10-min daily exercise session for 2 months. Conversely, 32 participants were placed into the control group and took a 10-min daily rest break during the same period. Each subject was evaluated once a week by means of the Corlett-Bishop body map with a visual analog discomfort scale and the Chalder fatigue questionnaire. RESULTS: Musculoskeletal discomfort decreased in both groups, but the reduction was only statistically significant for the spine and buttocks (p=0.04) and the sum of the segments (p=0.01) in the experimental group. In addition, the experimental group showed significant differences in the level of mental fatigue, especially in questions related to memory Rienzo, #181ff and tiredness (p=0.001). CONCLUSIONS: Our preliminary results demonstrate that appropriately designed and supervised exercise programs may be more efficient than rest breaks in decreasing discomfort and fatigue levels in call-center operators.

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15.

Sistema colinérgico: revisitando receptores, regulação e a relação com a doença de Alzheimer, esquizofrenia, epilepsia e tabagismo
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Ventura, Ana L. M.

; Abreu, Paula A.

; Freitas, Rodrigo C. C.

; Sathler, Plínio C.

; Loureiro, Natália

; Castro, Helena C.

Archives of Clinical Psychiatry (São Paulo)

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2010, Volume 37 N. 2 Pages 66 - 72

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

OBJETIVO: Revisar a estrutura e o funcionamento do sistema colinérgico central ressaltando seu papel na fisiologia e na fisiopatologia das doenças de Alzheimer e Parkinson, esquizofrenia, epilepsia e tabagismo. MÉTODO: Foi realizada uma pesquisa bibliográfica no MedLine, LILACS, PubMed e ISI, e na Biblioteca da Fundação Oswaldo Cruz, RJ, selecionando-se o período de 1914 a 2009, utilizando os descritores: "receptors", "cholinergic", "Alzheimer disease", "schizophrenia", "epilepsy" e "smoking", além de referências cruzadas dos artigos selecionados e análise adicional de referências na literatura específica do tema. RESULTADOS: Efeitos importantes da ativação de receptores colinérgicos nicotínicos e muscarínicos sobre o desenvolvimento do sistema nervoso central (SNC) têm sido descritos. A dessensibilização e a internalização dos receptores acoplados à proteína G mediadas pela ativação de proteínas cinases têm sido descritas em proliferação, diferenciação e morte celular, além de síndromes neuropsiquiátricas. CONCLUSÃO: As informações produzidas a partir de estudos do sistema de neurotransmissão colinérgica podem auxiliar no desenvolvimento de medicamentos mais específicos para o tratamento da doença de Alzheimer, esquizofrenia, epilepsia e tabagismo.

OBJECTIVES: To review articles regarding important topics about cholinergic system and its ionotropic and G-protein coupled receptors as well as their regulation, also enlightening its importance in central nervous system (CNS) development and in several neuropsychiatric conditions such as Alzheimer disease, schizophrenia, epilepsy and smoking. METHOD: Bibliographical research was completed through MedLine, LILACS, PubMed, ISI and the Fundação Oswaldo Cruz Library, RJ, specifically for 1914 to 2009, using the descritors: "receptors", "cholinergic", Alzheimer "disease", "schizophrenia", "epilepsy" and "smoking", in addition to the cross-reference of the articles selected and further analyses of bibliographical references on the theme. RESULTS: Currently literature describes important effects of nicotinic and muscarinic receptors activation on development of central nervous system (CNS). The protein G coupled receptors dessensibilization and internalization mediated by kinases have been described in proliferation, differentiation and cell death, and also in neurologic disorders. DISCUSSION: The importance of the cholinergic system and its relationship with pathologies such as Alzheimer disease, schizophrenia, epilepsy is evident. The data produced so far may help on planning medicaments more specific for these pathologies treatment.

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