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1.
Nat Prod Res ; : 1-4, 2023 Apr 06.
Artigo em Inglês | MEDLINE | ID: mdl-37021799

RESUMO

The species Bathysa gymnocarpa K.Schum is a tree belonging to the Rubiaceae family, endemic in Brazil. So far, there are reports neither of phytochemical work nor of biological evaluation of it. The analysis by High Performance Liquid Chromatography coupled to a Diode Array Detector and a tandem Mass Spectrometer with an Electrospray Ionization source (HPLC-DAD-ESI-MS/MS) of its crude extract allowed to characterize in a complex mixture, without isolation, fourteen compounds, being two as cinnamic acid derivatives, and the others as mono-, di- and triglycosilated derivatives of the flavonols quercetin and kaempferol. These compounds are reported for the first time in Bathysa spp.

2.
Artigo em Inglês | MEDLINE | ID: mdl-33676005

RESUMO

We investigated the antiophidic properties of isohemigossypolone (ISO), a naphthoquinone isolated from the outer bark of the Pachira aquatic Aubl. The inhibition of phospholipase A2, coagulant, fibrinogenolytic, hemorrhagic and myotoxic activities induced by Bothrops pauloensis venom (Pb) was investigated. For this, we use samples resulting from the incubation of Pb with ISO in different concentrations (1:1, 1:5 and 1:10 w/w), we also evaluated the condition of treatment using ISO after 15 min of venom inoculation. The activities of phospholipase A2, coagulant, fibrinogenolytic, hemorrhagic and myotoxic induced by the B. pauloensis venom were significantly inhibited when the ISO was pre-incubated with the crude venom. For in vivo neutralization tests, the results were observed even when the ISO was applied after 15 min of inoculation of the venom or metalloprotease (BthMP). Also, to identify the inhibition mechanism, we performed in silico assays, across simulations of molecular coupling and molecular dynamics, it was possible to identify the modes of interaction between ISO and bothropic toxins BmooMPα-I, Jararacussin-I and BNSP-7. The present study shows that naphthoquinone isohemigossypolone isolated from the P. aquatica plant inhibited part of the local and systemic damage caused by venom proteins, demonstrating the pharmacological potential of this compound in neutralizing the harmful effects caused by snakebites.


Assuntos
Bombacaceae/química , Venenos de Crotalídeos/antagonistas & inibidores , Naftoquinonas , Extratos Vegetais , Mordeduras de Serpentes/tratamento farmacológico , Animais , Masculino , Metaloproteases/metabolismo , Camundongos , Naftoquinonas/química , Naftoquinonas/farmacologia , Fosfolipases A2/metabolismo , Casca de Planta/química , Extratos Vegetais/farmacologia
3.
J Nat Prod ; 84(1): 81-90, 2021 01 22.
Artigo em Inglês | MEDLINE | ID: mdl-33397096

RESUMO

Cyclotides are plant-derived peptides found within five families of flowering plants (Violaceae, Rubiaceae, Fabaceae, Solanaceae, and Poaceae) that have a cyclic backbone and six conserved cysteine residues linked by disulfide bonds. Their presence within the Violaceae species seems ubiquitous, yet not all members of other families produce these macrocyclic peptides. The genus Palicourea Aubl. (Rubiaceae) contains hundreds of neotropical species of shrubs and small trees; however, only a few cyclotides have been discovered hitherto. Herein, five previously uncharacterized Möbius cyclotides within Palicourea sessilis and their pharmacological activities are described. Cyclotides were isolated from leaves and stems of this plant and identified as pase A-E, as well as the known peptide kalata S. Cyclotides were de novo sequenced by MALDI-TOF/TOF mass spectrometry, and their structures were solved by NMR spectroscopy. Because some cyclotides have been reported to modulate immune cells, pase A-D were assayed for cell proliferation of human primary activated T lymphocytes, and the results showed a dose-dependent antiproliferative function. The toxicity on other nonimmune cells was also assessed. This study reveals that pase cyclotides have potential for applications as immunosuppressants and in immune-related disorders.


Assuntos
Ciclotídeos/efeitos dos fármacos , Ciclotídeos/metabolismo , Fabaceae/química , Linfócitos/metabolismo , Solanaceae/química , Violaceae/química , Brasil , Ciclotídeos/química , Humanos , Linfócitos/química , Linfócitos/efeitos dos fármacos , Magnoliopsida , Espectrometria de Massas , Folhas de Planta/química , Folhas de Planta/metabolismo
4.
Rev. bras. psicanál ; 54(3): 167-176, jul.-set. 2020. ilus
Artigo em Português | LILACS-Express | LILACS, Index Psicologia - Periódicos | ID: biblio-1288930

RESUMO

RESUMO Este artigo tenta fazer uma aproximação entre o teatro de Valère Novarina e a psicanálise lacaniana através da abordagem do objeto voz. No teatro de Novarina, vemos uma profusão da palavra no intuito de extrair não o seu sentido, mas a sua voz, como um pedaço de corpo que é lançado no espaço cênico. Na psicanálise, a voz desponta não como um veículo ou um instrumento da palavra, mas como aquilo que se subtrai dela na constituição do sujeito e permanece enquanto resto. O resto vocálico é o que retorna à cena, seja no teatro do dramaturgo francês, seja na própria sessão analítica, como um real do corpo que insiste em transmitir algo para além do sentido. Dessa forma, o objeto voz é o pivô dessa aproximação justamente por ser o inexorável do sujeito, a libra de carne que o sujeito perde para se constituir e retorna para o palco da vida numa insistente presença.


ABSTRACT This article attempts to approximate Valère Novarina's theater and Lacanian psychoanalysis by approaching the voice object. In Novarina's theater we see a profusion of the word in order to extract not its meaning but its voice as a part of the body that is thrown into the scenic area. In psychoanalysis, the voice emerges not as a vehicle or instrument of the word, but that which is subtracted from it in the constitution of the subject and remains as remnant. The vowel remnant is what returns to the scene, whether in the theater of the French playwright or in the analytic session itself, as a real body that insists on conveying something beyond meaning. Thus, the voice object is the pivot of this approach precisely because it is the inexorable of the subject, the pound of flesh that the subject loses to be constituted and returns to the stage of life in an insistent presence.


RESUMEN Este artículo intenta aproximarse al teatro de Valère Novarina y al psicoanálisis lacaniano al acercarse al objeto voz. En el teatro de Novarina vemos una profusión de la palabra para extraer no su significado, sino su voz como una pieza de cuerpo que se arroja al espacio escénico. En el psicoanálisis, la voz emerge no como un vehículo o instrumento de la palabra, sino como aquello que se le resta en la constitución del sujeto y permanece como un resto. El resto de las vocales es lo que vuelve a la escena, ya sea en el teatro del dramaturgo francés o en la sesión analítica misma, como un cuerpo real que insiste en transmitir algo más allá del significado. Por lo tanto, el objeto voz es el eje de este enfoque precisamente porque es lo inexorable del sujeto, la libra de carne que el sujeto pierde para constituirse y regresa a la escena de la vida en una presencia insistente.


RÉSUMÉ Cet article tente de rapprocher le théâtre de Valère Novarina et la psychanalyse lacanienne au moyen de l'objet vocal. Dans le théâtre de Novarina, nous voyons une profusion de mots dans le dessein d'extraire non pas son sens mais sa voix, tel un morceau de corps lancé dans l'espace scénique. En psychanalyse, la voix n'émerge pas comme un véhicule ou un instrument de la parole, mais comme ce qui s'en soustrait dans la constitution du sujet et demeure en tant qu'un reste. Le reste vocal est ce qui revient sur la scène, que ce soit sur le théâtre du dramaturge français soit dans la session analytique elle-même, comme un corps réel qui insiste pour transmettre quelque chose qui dépasse le sens. Ainsi, l'objet vocal est le pivot de cette approche, précisément parce qu'il est l'inexorable du sujet, la livre de chair que le sujet perd pour se constituer et revient sur la scène de la vie dans une présence insistante.

5.
Environ Sci Pollut Res Int ; 27(27): 33527-33542, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32566986

RESUMO

The dairy industry can contribute to global food security in a sustainable way by efficiently converting milk into dairy ingredients and products, even though they are polluting on a large scale. In this context, this study aimed to conduct a systematic literature review on sustainable indicators and dairy industries. The methodology used has a qualitative and quantitative approach and its technical procedure was the systematic literature review. The bases of journals consulted, using the keywords "sustainability indicator" and "dairy industry" which resulted in 130 valid scientific articles. The main results show that the sustainability indicators in the dairy industry are emerging and lacking research; being found seven papers, that highlight 12 indicators of the environmental, 11 of the social and eight economic dimensions, that may be considered fragile and initial. The studied problems are related to wastewater treatment methods, electric power consumption, efficiency of the industrial plant, among others, and the benefits on the theme are related to solutions to the difficulties, such as electricity reduction, sustainable practices. Among others, it is concluded that the dairy industries address the sustainability theme since 2011, with an ambiguous trend, being found evidence of the fragility of the sustainability indicators was found, mainly in the initial stage of their conception, when considering holistic approach (triple bottom line).


Assuntos
Indústria de Laticínios , Poluentes Ambientais , Leite , Animais , Abastecimento de Alimentos , Águas Residuárias
6.
Biodivers Data J ; 8: e50837, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32508509

RESUMO

BACKGROUND: Brazil is one of the most biodiverse countries in the world, with about 37,000 species of land plants. Part of this biodiversity is within protected areas. The development of online databases in the last years greatly improved the available biodiversity data. However, the existing databases do not provide information about the protected areas in which individual plant species occur. The lack of such information is a crucial gap for conservation actions. This study aimed to show how the information captured from online databases, cleaned by a protocol and verified by taxonomists allowed us to obtain a comprehensive list of the vascular plant species from the "Parque Nacional do Itatiaia", the first national park founded in Brazil. All existing records in the online database JABOT (15,100 vouchers) were downloaded, resulting in 11,783 vouchers identified at the species level. Overall, we documented 2,316 species belonging to 176 families and 837 genera of vascular plants in the "Parque Nacional do Itatiaia". Considering the whole vascular flora, 2,238 species are native and 78 are non-native. NEW INFORMATION: The "Parque Nacional do Itatiaia" houses 13% of the angiosperm and 37% of the fern species known from the Brazilian Atlantic Forest. Amongst these species, 82 have been cited as threatened, following IUCN categories (CR, EN or VU), seven are data deficient (DD) and 15 have been classified as a conservation priority, because they are only known from a single specimen collected before 1969.

7.
Cien Saude Colet ; 24(5): 1915-1923, 2019 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-31166524

RESUMO

Missed appointments have a great economic, social and administrative impact on the management of public health services. This research aimed to study factors associated with non-attendance to the first appointments of pediatric patients in secondary dental care services in the city of Curitiba, Brazil. A cross-sectional study was performed using secondary data from the electronic health records of the Curitiba Municipal Secretary of Health. The study included all children (0-12 years) referred to secondary dental clinics in the years 2010 to 2013. Data were analyzed by the chi-square test and Pearson linear trend chi-square (α = 0.05). Binary logistic regression models were built. Data from 1,663 children were assessed and the prevalence of non-attendance was 28.3%. The variables associated with the non-attendance in inferential analysis (p < 0.05) and in the final model were the household income per capita (95% CI: 1.93-2.82) and the waiting time in virtual queue (95% CI: 1.000-1.002). Socioeconomic aspects and the waiting time in virtual queue, should be considered in the strategic planning of health services as they may influence the attendance of pediatric patients in secondary dental referral service.


Assuntos
Agendamento de Consultas , Assistência Odontológica/estatística & dados numéricos , Pacientes não Comparecentes/estatística & dados numéricos , Listas de Espera , Brasil , Criança , Pré-Escolar , Estudos Transversais , Registros Eletrônicos de Saúde , Feminino , Humanos , Lactente , Masculino , Encaminhamento e Consulta , Atenção Secundária à Saúde , Fatores Socioeconômicos , Fatores de Tempo
8.
J Clin Exp Dent ; 11(4): e334-e339, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31110612

RESUMO

BACKGROUND: Nowadays, the use of whitening toothpastes is a common habit, especially among young adults, due to aesthetic appeal. On the other hand, little is known regarding the effects of brushing with those newly dentifrices on wear properties of resin composites. MATERIAL AND METHODS: Thirty specimens of nanoparticle composite resin were fabricated and stored in distilled water for 24 h at 370C. After this, the roughness analysis was performed and submitted to the simulated brushing technique using three types of toothpastes: conventional (GI), and two with whitening effect (GII and GIII) for a period of 15 days, with 2 brushing sessions per day for 2 minutes each. The final surface roughness was analyzed after completing all the brushing cycles and stereoscopic images were taken for each group. The data was analyzed by one-way ANOVA and Tukey-test post hoc for intergroup comparison and the T-test for dependent samples as well (α = 0.05). RESULTS: However showing an increase of roughness for all groups after the brushing cycles (p = 0.01), no statistically significant differences among the groups after simulated brushing was verified (p = 0.17). Yet, just some cracks of the stereoscopic images were shown, demonstrating no distinct visual effects among the studied groups. CONCLUSIONS: After simulated brushing with the whitening toothpastes, similar degree of roughness was verified on the composite resin tested. Key words:Composite resin, toothpastes, whitening.

9.
Artigo em Inglês | MEDLINE | ID: mdl-31131000

RESUMO

BACKGROUND: Lachesis muta rhombeata is one of the venomous snakes of medical importance in Brazil whose envenoming is characterized by local and systemic effects which may produce even shock and death. Its venom is mainly comprised of serine and metalloproteinases, phospholipases A2 and bradykinin-potentiating peptides. Based on a previously reported fractionation of L. m. rhombeata venom (LmrV), we decided to perform a subproteome analysis of its major fraction and investigated a novel component present in this venom. METHODS: LmrV was fractionated through molecular exclusion chromatography and the main fraction (S5) was submitted to fibrinogenolytic activity assay and fractionated by reversed-phase chromatography. The N-terminal sequences of the subfractions eluted from reversed-phase chromatography were determined by automated Edman degradation. Enzyme activity of LmrSP-4 was evaluated upon chromogenic substrates for thrombin (S-2238), plasma kallikrein (S-2302), plasmin and streptokinase-activated plasminogen (S-2251) and Factor Xa (S-2222) and upon fibrinogen. All assays were carried out in the presence or absence of possible inhibitors. The fluorescence resonance energy transfer substrate Abz-KLRSSKQ-EDDnp was used to determine the optimal conditions for LmrSP-4 activity. Molecular mass of LmrSP-4 was determined by MALDI-TOF and digested peptides after trypsin and Glu-C treatments were analyzed by high resolution MS/MS using different fragmentation modes. RESULTS: Fraction S5 showed strong proteolytic activity upon fibrinogen. Its fractionation by reversed-phase chromatography gave rise to 6 main fractions (S5C1-S5C6). S5C1-S5C5 fractions correspond to serine proteinases whereas S5C6 represents a C-type lectin. S5C4 (named LmrSP-4) had its N-terminal determined by Edman degradation up to the 53rd amino acid residue and was chosen for characterization studies. LmrSP-4 is a fibrinogenolytic serine proteinase with high activity against S-2302, being inhibited by PMSF and benzamidine, but not by 1,10-phenantroline. In addition, this enzyme exhibited maximum activity within the pH range from neutral to basic and between 40 and 50 °C. About 68% of the LmrSP-4 primary structure was covered, and its molecular mass is 28,190 Da. CONCLUSIONS: Novel serine proteinase isoforms and a lectin were identified in LmrV. Additionally, a kallikrein-like serine proteinase that might be useful as molecular tool for investigating bradykinin-involving process was isolated and partially characterized.

10.
Ciênc. Saúde Colet. (Impr.) ; 24(5): 1915-1923, Mai. 2019. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1001815

RESUMO

Abstract Missed appointments have a great economic, social and administrative impact on the management of public health services. This research aimed to study factors associated with non-attendance to the first appointments of pediatric patients in secondary dental care services in the city of Curitiba, Brazil. A cross-sectional study was performed using secondary data from the electronic health records of the Curitiba Municipal Secretary of Health. The study included all children (0-12 years) referred to secondary dental clinics in the years 2010 to 2013. Data were analyzed by the chi-square test and Pearson linear trend chi-square (α = 0.05). Binary logistic regression models were built. Data from 1,663 children were assessed and the prevalence of non-attendance was 28.3%. The variables associated with the non-attendance in inferential analysis (p < 0.05) and in the final model were the household income per capita (95% CI: 1.93-2.82) and the waiting time in virtual queue (95% CI: 1.000-1.002). Socioeconomic aspects and the waiting time in virtual queue, should be considered in the strategic planning of health services as they may influence the attendance of pediatric patients in secondary dental referral service.


Resumo O não comparecimento a consultas tem um grande impacto no gerenciamento dos serviços de saúde pública. O objetivo foi avaliar os fatores associados ao não comparecimento às primeiras consultas de pacientes pediátricos nos serviços de atenção secundária em saúde bucal na cidade de Curitiba, Brasil. Um estudo transversal foi desenvolvido com dados secundários obtidos de cadastros eletrônicos da Secretaria Municipal de Saúde de Curitiba. Participaram crianças de 0 a 12 anos de idade encaminhadas para atenção secundária nos anos de 2010 a 2013. Os dados foram analisados pelos testes de qui-quadrado de Pearson e qui-quadrado de tendência linear (α = 0,05). Foram constituídos modelos de regressão logística binária. Foram analisados os dados de 1.663 crianças. A prevalência de não comparecimento às primeiras consultas foi de 28,3%. As variáveis que estiveram associadas ao não comparecimento na análise inferencial (p < 0,05) e no modelo final foram a renda per capita familiar (95% CI: 1,93-2,82) e o tempo de espera em fila virtual (95% CI: 1,000-1,002). Aspectos econômicos e o tempo de espera em fila virtual devem ser considerados no planejamento estratégico dos serviços públicos de saúde bucal, pois podem influenciar o comparecimento de pacientes na atenção secundária.


Assuntos
Humanos , Masculino , Feminino , Lactente , Pré-Escolar , Criança , Agendamento de Consultas , Listas de Espera , Assistência Odontológica/estatística & dados numéricos , Pacientes não Comparecentes/estatística & dados numéricos , Encaminhamento e Consulta , Fatores Socioeconômicos , Fatores de Tempo , Atenção Secundária à Saúde , Brasil , Estudos Transversais , Registros Eletrônicos de Saúde
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