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1.
Parasitol Res ; 121(2): 751-762, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34988671

RESUMO

Leishmaniasis is a neglected disease that affects millions of people, mostly in developing countries. Although this disease has a high impact on public health, there are few drug options to treat the different leishmaniasis forms. Additionally, these current therapies have various adverse effects, including gastrointestinal disturbances, headache, pancreatitis, and hepatotoxicity. Thus, it is essential to develop new drug prototypes to treat leishmaniasis. Accordingly, the present study aimed to evaluate the leishmanicidal activity of Morita-Baylis-Hillman adducts and their O-acetylates, carboxylic acid derivatives, and acid and ester derivatives of 2-methyl-phenylpropanoids against Leishmania chagasi. Initially, we evaluated the cytotoxicity of 16 derivatives (1-16G) against J774A.1 macrophages. Eight derivatives (2G, 4G, 5G, 7G, 9G, 10G, 13G, and 15G) showed no cytotoxicity at up to the maximum concentration tested (100 µM). When evaluated for antileishmanial effect against promastigote forms, 1G, 6G, 8G, 10G, 11G, 13G, 14G, 15G, and 16G displayed significant toxicity compared to the control (0.1% DMSO). Additionally, the compounds 1G, 5G, 7G, 9G, 11G, 13G, 14G, and 16G reduced macrophage infection by amastigotes. Thus, we conclude that these derivatives have antileishmanial effects, particularly 1G, which showed activity against promastigotes and amastigotes, and low toxicity against macrophages.


Assuntos
Antiprotozoários , Leishmaniose , Antiprotozoários/toxicidade , Humanos , Leishmaniose/tratamento farmacológico , Macrófagos , Compostos Orgânicos
2.
Molecules ; 27(9)2022 Apr 22.
Artigo em Inglês | MEDLINE | ID: mdl-35566043

RESUMO

In this study, soybean oil deodorizer distillate (SODD), a mixture of free fatty acids and acylglycerides, and isoamyl alcohol were evaluated as substrates in the synthesis of fatty acid isoamyl monoesters catalyzed by Eversa (a liquid formulation of Thermomyces lanuginosus lipase). SODD and the products were characterized by the chemical and physical properties of lubricant base stocks. The optimal conditions to produce isoamyl fatty acid esters were determined by response surface methodology (RSM) using rotational central composite design (RCCD, 23 factorial + 6 axial points + 5 replications at the central point); they were 1 mol of fatty acids (based on the SODD saponifiable index) to 2.5 mol isoamyl alcohol, 45 °C, and 6 wt.% enzymes (enzyme mass/SODD mass). The effect of the water content of the reactional medium was also studied, with two conditions of molecular sieve ratio (molecular sieve mass/SODD mass) selected as 39 wt.% (almost anhydrous reaction medium) and 9 wt.%. Ester yields of around 50 wt.% and 70 wt.% were reached after 50 h reaction, respectively. The reaction products containing 43.7 wt.% and 55.2 wt.% FAIE exhibited viscosity indices of 175 and 163.8, pour points of -6 °C and -9 °C, flash points of 178 and 104 °C, and low oxidative stability, respectively. Their properties (mainly very high viscosity indices) make them suitable to be used as base stocks in lubricant formulation industries.


Assuntos
Lubrificantes , Óleo de Soja , Esterificação , Ácidos Graxos/química , Lipase/química , Óleo de Soja/química
3.
Crit Rev Biotechnol ; 41(6): 865-878, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-33645353

RESUMO

Rigorous evidence reviews must follow specific guidelines designed to improve transparency, reproducibility, and to minimize biases to which traditional reviews are susceptible. While evidence synthesis methods, such as systematic reviews and maps, have been used in several research fields, the majority of reviews published in the realm of chemical engineering are nonsystematic. In this study, we incorporated principles of systematic mapping to conduct a literature review covering research on the synthesis of sugar fatty acid esters (SFAE) with Candida antarctica lipase B (CALB). Our results showed that the simple monosaccharides were the most cited sugars among studies we conducted. The direct use of renewable raw materials and frequently available resources to produce alternative sugar esters (SE) was scarcely reported in our data set. We found that free fatty acids (FFA) were the most commonly cited acyl donors amongst all publications, with lauric, oleic, and palmitic acids accounting for ∼43% of the occurrences. Tertiary alcohols (ter-butyl alcohol (T-but) and 2-methyl-2-butanol (2M2B)) and ionic liquids were the most used solvents to synthesize SE. The co-occurence analysis of keywords involving solvent terms showed that most of the papers evaluated different solvents as reaction media (mostly in the form of a bisolvent system), also investigating the impact of their choice on sugar ester productivities. Given the potential of reviews informing us of research decisions, this article reveals trends and spaces across CALB-catalyzed SE synthesis research, in addition to introducing a new methodological perspective for developing reviews in the field of chemical engineering.


Assuntos
Ésteres , Proteínas Fúngicas , Lipase , Açúcares , Basidiomycota , Catálise , Esterificação , Proteínas Fúngicas/metabolismo , Lipase/metabolismo , Reprodutibilidade dos Testes , Revisões Sistemáticas como Assunto
5.
Molecules ; 19(9): 14699-709, 2014 Sep 16.
Artigo em Inglês | MEDLINE | ID: mdl-25230124

RESUMO

In previous works we showed that oral administration of caulerpine, a bisindole alkaloid isolated from algae of the genus Caulerpa, produced antinociception when assessed in chemical and thermal models of nociception. In this study, we evaluated the possible mechanism of action of this alkaloid in mice, using the writhing test. The antinociceptive effect of caulerpine was not affected by intraperitoneal (i.p.) pretreatment of mice with naloxone, flumazenil, l-arginine or atropine, thus discounting the involvement of the opioid, GABAergic, l-arginine-nitric oxide and (muscarinic) cholinergic pathways, respectively. In contrast, i.p. pretreatment with yohimbine, an α2-adrenoceptor antagonist, or tropisetron, a 5-HT3 antagonist, significantly blocked caulerpine-induced antinociception. These results suggest that caulerpine exerts its antinociceptive effect in the writhing test via pathways involving α2-adrenoceptors and 5-HT3 receptors. In summary, this alkaloid could be of interest in the development of new dual-action analgesic drugs.


Assuntos
Alcaloides/administração & dosagem , Indóis/administração & dosagem , Dor Nociceptiva/tratamento farmacológico , Medição da Dor , Alcaloides/química , Analgésicos/administração & dosagem , Animais , Humanos , Indóis/química , Camundongos , Naloxona/administração & dosagem , Óxido Nítrico/metabolismo , Dor Nociceptiva/metabolismo , Dor Nociceptiva/patologia , Receptores Adrenérgicos alfa 2/efeitos dos fármacos , Receptores Adrenérgicos alfa 2/metabolismo , Receptores 5-HT3 de Serotonina/efeitos dos fármacos , Receptores 5-HT3 de Serotonina/metabolismo , Tropizetrona , Ioimbina/administração & dosagem
6.
JAMA Dermatol ; 160(6): 658-666, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-38656294

RESUMO

Importance: Inconsistent reporting of outcomes in clinical trials of rosacea is impeding and likely preventing accurate data pooling and meta-analyses. There is a need for standardization of outcomes assessed during intervention trials of rosacea. Objective: To develop a rosacea core outcome set (COS) based on key domains that are globally relevant and applicable to all demographic groups to be used as a minimum list of outcomes for reporting by rosacea clinical trials, and when appropriate, in clinical practice. Evidence Review: A systematic literature review of rosacea clinical trials was conducted. Discrete outcomes were extracted and augmented through discussions and focus groups with key stakeholders. The initial list of 192 outcomes was refined to identify 50 unique outcomes that were rated through the Delphi process Round 1 by 88 panelists (63 physicians from 17 countries and 25 patients with rosacea in the US) on 9-point Likert scale. Based on feedback, an additional 11 outcomes were added in Round 2. Outcomes deemed to be critical for inclusion (rated 7-9 by ≥70% of both groups) were discussed in consensus meetings. The outcomes deemed to be most important for inclusion by at least 85% of the participants were incorporated into the final core domain set. Findings: The Delphi process and consensus-building meetings identified a final core set of 8 domains for rosacea clinical trials: ocular signs and symptoms; skin signs of disease; skin symptoms; overall severity; patient satisfaction; quality of life; degree of improvement; and presence and severity of treatment-related adverse events. Recommendations were also made for application in the clinical setting. Conclusions and Relevance: This core domain set for rosacea research is now available; its adoption by researchers may improve the usefulness of future trials of rosacea therapies by enabling meta-analyses and other comparisons across studies. This core domain set may also be useful in clinical practice.


Assuntos
Ensaios Clínicos como Assunto , Consenso , Técnica Delphi , Rosácea , Rosácea/terapia , Rosácea/diagnóstico , Humanos , Ensaios Clínicos como Assunto/normas , Avaliação de Resultados em Cuidados de Saúde/normas , Resultado do Tratamento
7.
J Am Acad Dermatol ; 69(6 Suppl 1): S36-41, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24229635

RESUMO

Rosacea is a prevalent disorder that may be disfiguring and cause significant ocular morbidity, if not diagnosed and managed appropriately. Ocular rosacea, in particular, is often left undiagnosed as no specific test is available to confirm the diagnosis. Accurate diagnosis is further complicated because symptoms of ocular rosacea are not always specific to the disorder alone. Other ophthalmic disorders may present with similar findings. Further challenges exist because the severity of ocular symptoms is often not related to the severity of cutaneous findings in rosacea. Isolating a disease marker may facilitate earlier diagnosis and treatment, and could also contribute to better understanding of disease pathogenesis. The glycomics of tear fluid and saliva in patients with rosacea shows promise as an initial step in the search for a biomarker specific to the disease. We have previously found potentially important disease biomarkers in roseatic tear and saliva samples. Further investigation should prove important in the early stages of developing a set of markers for accurate disease identification.


Assuntos
Oftalmopatias/diagnóstico , Rosácea/diagnóstico , Suplementos Nutricionais , Oftalmopatias/epidemiologia , Oftalmopatias/fisiopatologia , Oftalmopatias/terapia , Humanos , Rosácea/epidemiologia , Rosácea/fisiopatologia , Rosácea/terapia
8.
Healthcare (Basel) ; 11(12)2023 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-37372871

RESUMO

BACKGROUND: Increased global cancer incidence rates have led to a growing demand for cancer diagnosis and treatment, as well as basic and clinical research on the subject. The expansion of clinical cancer trials beyond the borders of highly developed countries has aided the arrival of these assessments in South American countries. In this context, this study's objective is to highlight clinical cancer trial profiles developed and sponsored by pharmaceutical companies and conducted in South American countries from 2010 to 2020. METHODS: This study comprises descriptive and retrospective research conducted following a search for clinical trials (phases I, II and III), registered at clinicaltrials.gov, carried out in Latin American countries and sponsored by pharmaceutical companies ("Argentina", "Brazil", "Chile", "Peru", "Colombia", "Ecuador", "Uruguay", "Venezuela", "Paraguay", "Bolivia"), registered between 1 January 2010 and 31 December 2020. A total of 1451 clinical trials were retrieved, of which 200 trials unrelated to cancer were excluded and 646 duplicates were removed, leading to a final total of 605 clinical trials employing qualitative and quantitative analyses. RESULTS: A 122% increase in the number of clinical trial registrations from 2010 to 2020 was noted, with a prevalence of phase III studies (431 trials of a total of 605). Lung (119), breast (100), leukemia (42), prostate (39) and melanoma (32) were the main cancers tested for new drugs. CONCLUSIONS: The data reported herein indicate the need for strategic basic and clinical research planning that considers South American epidemic cancer profiles.

9.
Foods ; 12(16)2023 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-37628057

RESUMO

Scientific mapping using bibliometric data network analysis was applied to analyze research works related to lipases and their industrial applications, evaluating the current state of research, challenges, and opportunities in the use of these biocatalysts, based on the evaluation of a large number of publications on the topic, allowing a comprehensive systematic data analysis, which had not yet been conducted in relation to studies specifically covering lipases and their industrial applications. Thus, studies involving lipase enzymes published from 2018 to 2022 were accessed from the Web of Science database. The extracted records result in the analysis of terms of bibliographic compatibility among the articles, co-occurrence of keywords, and co-citation of journals using the VOSviewer algorithm in the construction of bibliometric maps. This systematic review analysis of 357 documents, including original and review articles, revealed studies inspired by lipase enzymes in the research period, showing that the development of research, together with different areas of knowledge, presents good results related to the applications of lipases, due to information synchronization. Furthermore, this review showed the main challenges in lipase applications regarding increased production and operational stability; establishing well-defined evaluation criteria, such as cultivation conditions, activity, biocatalyst stability, type of support and reactor; thermodynamic studies; reuse cycles; and it can assist in defining goals for the development of successful large-scale applications, showing several points for improvement of future studies on lipase enzymes.

10.
Rev Gaucha Enferm ; 44: e20220362, 2023.
Artigo em Inglês, Português | MEDLINE | ID: mdl-37970973

RESUMO

OBJECTIVE: To identify factors associated with permission for child vaccination in the context of the COVID-19 pandemic. METHOD: Cross-sectional study, with parents/guardians of children aged up to 1 year, 11 months and 29 days, aged 18 years or older, with internet access and residents of the state of Alagoas. The collection was conducted between June 2021 and April 2022, using a structured instrument via Google forms®. Fisher's Exact and Pearson's chi-square statistical tests were used. RESULTS: A total of 94 parents/guardians participated. There was an association between permission for child vaccination during the COVID-19 pandemic and higher education level of parents/guardians, with the lack of an educational bond with the child, and between parents/guardians who would allow the application of the COVID-19 vaccine. CONCLUSION: Permission for child vaccination in the context of the COVID-19 pandemic was associated with higher education level of parents/guardians and the absence of educational bond of the child.


Assuntos
COVID-19 , Humanos , Criança , COVID-19/epidemiologia , COVID-19/prevenção & controle , Vacinas contra COVID-19 , Estudos Transversais , Pandemias , Vacinação , Pais
11.
PLoS Pathog ; 6(10): e1001161, 2010 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-21060810

RESUMO

RNA interference (RNAi) pathways are widespread in metaozoans but the genes required show variable occurrence or activity in eukaryotic microbes, including many pathogens. While some Leishmania lack RNAi activity and Argonaute or Dicer genes, we show that Leishmania braziliensis and other species within the Leishmania subgenus Viannia elaborate active RNAi machinery. Strong attenuation of expression from a variety of reporter and endogenous genes was seen. As expected, RNAi knockdowns of the sole Argonaute gene implicated this protein in RNAi. The potential for functional genetics was established by testing RNAi knockdown lines lacking the paraflagellar rod, a key component of the parasite flagellum. This sets the stage for the systematic manipulation of gene expression through RNAi in these predominantly diploid asexual organisms, and may also allow selective RNAi-based chemotherapy. Functional evolutionary surveys of RNAi genes established that RNAi activity was lost after the separation of the Leishmania subgenus Viannia from the remaining Leishmania species, a divergence associated with profound changes in the parasite infectious cycle and virulence. The genus Leishmania therefore offers an accessible system for testing hypothesis about forces that may select for the loss of RNAi during evolution, such as invasion by viruses, changes in genome plasticity mediated by transposable elements and gene amplification (including those mediating drug resistance), and/or alterations in parasite virulence.


Assuntos
Interferência de RNA , Transdução de Sinais/genética , Trypanosomatina/genética , Evolução Molecular , Genes de Protozoários , Especiação Genética , Instabilidade Genômica/genética , Instabilidade Genômica/fisiologia , Leishmania braziliensis/genética , Leishmania braziliensis/metabolismo , Fenótipo , Filogenia , Interferência de RNA/fisiologia , RNA Interferente Pequeno/farmacologia , Proteínas de Ligação a RNA/genética , Proteínas de Ligação a RNA/metabolismo , Trypanosomatina/imunologia , Vírus/genética
12.
Ocul Surf ; 10(3): 184-92, 2012 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-22814645

RESUMO

The purpose of this study was to study changes in glycosylation in tear and saliva obtained from control and ocular rosacea patients in order to identify potential biomarkers for rosacea. Tear fluid was collected from 51 subjects (28 healthy controls and 23 patients with ocular rosacea). Saliva was collected from 42 of the same subjects (25 controls and 17 patients). Pooled and individual samples were examined to determine overall glycan profiles and individual variations in glycosylation. O-and N- glycans were released from both patients and control subjects. Released glycans were purified and enriched by solid-phase extraction (SPE) with graphitized carbon. Glycans were eluted based on glycan size and polarity. SPE fractions were then analyzed by high-resolution mass spectrometry. Glycan compositions were assigned by accurate masses. Their structures were further elucidated by tandem mass spectrometric using collision-induced dissociation (CID), and specific linkage information was obtained by exoglycosidase digestion. N- and O-glycans were released from 20-µL samples without protein identification, separation, and purification. Approximately 50 N-glycans and 70 O-glycans were globally profiled by mass spectrometry. Most N-glycans were highly fucosylated, while O-glycans were sulfated. Normal tear fluid and saliva contain highly fucosylated glycans. The numbers of sulfated glycans were dramatically increased in tear and saliva of rosacea patients compared to controls. Glycans found in tear and saliva from roseatic patients present highly quantitative similarity. The abundance of highly fucosylated N-glycans in the control samples and sulfated O-glycans in ocular rosacea patient samples may lead to the discovery of an objective diagnostic marker for the disease.


Assuntos
Polissacarídeos/metabolismo , Rosácea/metabolismo , Saliva/metabolismo , Lágrimas/metabolismo , Biomarcadores/metabolismo , Ciclotrons , Análise de Fourier , Glicosilação , Humanos , Espectrometria de Massas , Oligossacarídeos/metabolismo
13.
Cien Saude Colet ; 27(8): 3103-3116, 2022 Aug.
Artigo em Português, Inglês | MEDLINE | ID: mdl-35894322

RESUMO

The development of new drugs depends on several scientific steps, which culminate in clinical trials. The clinical trials pharmacy (CTP) is the place for receiving, preparing, storing and dispensing the investigational product or study drug. Therefore, it must have infrastructure and procedures that guarantee participant safety and quality of research data. This study aimed to systematize guidelines for CTP in Brazil. We conducted a scope review and organized the results using the Ishikawa Method (6Ms). In total, 51 publications were selected for each "M", 39 laws, regulations or guidelines and 12 scientific articles: 25 publications for pharmaceutical services (pharmacy procedures to ensure participant safety from investigational product ordering to final disposition), 14 for Quality Indicators, 12 for Human Resources, 11 for Infrastructure, 11 for Material Resources and 5 for Investigational Product. Our results synthesize information for the organization, operation and evaluation of CTP in Brazil, emphasizes the inclusion of the pharmacist within the clinical trials context, and contributes to preparation for monitoring, auditing, and inspections conducted by regulatory agencies.


O desenvolvimento de novos medicamentos depende de etapas científicas que culminam nos ensaios clínicos em seres humanos. A farmácia de ensaios clínicos (FEC) é o local destinado ao recebimento, preparação, armazenamento e dispensação do produto investigacional (PI). Para tanto, deve possuir infraestrutura e procedimentos que garantam a segurança do participante e a qualidade da pesquisa. Este trabalho teve por objetivo sistematizar diretrizes para FEC no Brasil. Foi realizada uma revisão de escopo e as diretrizes foram organizadas utilizando o método de Ishikawa ("método 6Ms"). No total foram selecionadas 51 publicações, sendo 39 diretrizes e normas e 12 artigos científicos para cada "M"; 25 descreveram o ciclo de assistência farmacêutica (procedimentos para assegurar a segurança dos participantes, desde a requisição do produto até a destinação final), 14 indicadores de qualidade, 12 de recursos humanos, 11 de infraestrutura e recursos materiais e 5 descreveram PIs. para organização, funcionamento e avaliação de FEC no Brasil e corroboram a necessidade da presença do profissional farmacêutico no ciclo da assistência farmacêutica no contexto dos ensaios clínicos, contribuindo ainda na preparação para monitorias, auditorias e inspeções de agências regulatórias.


Assuntos
Assistência Farmacêutica , Farmácias , Brasil , Citidina Trifosfato , Humanos , Farmacêuticos
14.
Front Mol Biosci ; 8: 639423, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34355020

RESUMO

By June 2021, a new contagious disease, the Coronavirus disease 2019 (COVID-19), has infected more than 172 million people worldwide, causing more than 3.7 million deaths. Many aspects related to the interactions of the disease's causative agent, SAR2-CoV-2, and the immune response are not well understood: the multiscale interactions among the various components of the human immune system and the pathogen are very complex. Mathematical and computational tools can help researchers to answer these open questions about the disease. In this work, we present a system of fifteen ordinary differential equations that models the immune response to SARS-CoV-2. The model is used to investigate the hypothesis that the SARS-CoV-2 infects immune cells and, for this reason, induces high-level productions of inflammatory cytokines. Simulation results support this hypothesis and further explain why survivors have lower levels of cytokines levels than non-survivors.

15.
Int J Biol Macromol ; 164: 489-498, 2020 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-32693130

RESUMO

This study aimed to understand the effect of silver nanoparticles (AgNPs) on physiochemical properties of hydroxypropyl methylcellulose (HPMC) film-forming solutions (FFS) and nanocomposite films (NCF), as well as the efficacy of these materials to control the development of anthracnose caused by Colletotrichum gloeosporioides in papaya (Carica papaya L.). FFS were characterized by pH, particle size distribution, and rheology. In addition, thickness, morphology, water contact angle, barrier, chemical, crystallinity, thermal, and mechanical properties from NCF were investigated. The minimum inhibitory concentration of AgNPs against C. gloeosporioides was determined by in vitro test. FFS with 0.25 wt% of AgNPs were used as coatings in papayas inoculated with C. gloeosporioides. Finally, the physicochemical parameters were investigated during their storing up to 7 days at 10 °C, followed by 7 days at 20 °C. The presence of AgNPs impacted the thickness, morphology, moisture content, chemical bonds, crystalline structure, and thermal properties of films. Coatings with 0.25 wt% of AgNPs reduced the incidence and severity of C. gloeosporioides and avoided the weight loss of papayas during storing. The ripening of papaya occurred naturally, showing that the coating only delayed this process. Thus, HPMC-AgNPs coating can be an alternative to extend the papaya shelf life.


Assuntos
Antifúngicos/farmacologia , Carica/microbiologia , Colletotrichum/efeitos dos fármacos , Derivados da Hipromelose/química , Prata/farmacologia , Antifúngicos/química , Carica/efeitos dos fármacos , Colletotrichum/patogenicidade , Filmes Comestíveis , Armazenamento de Alimentos , Frutas/química , Nanopartículas Metálicas , Testes de Sensibilidade Microbiana , Nanocompostos , Doenças das Plantas/prevenção & controle , Prata/química
16.
Intensive Care Med Exp ; 8(1): 13, 2020 Apr 09.
Artigo em Inglês | MEDLINE | ID: mdl-32274608

RESUMO

BACKGROUND: Several therapeutic strategies to rescue the brain from ischemic injury have improved outcomes after stroke; however, there is no treatment as yet for reperfusion injury, the secondary damage caused by necessary revascularization. Recently we characterized ammonium tetrathiomolybdate (ATTM), a drug used as a copper chelator over many decades in humans, as a new class of sulfide donor that shows efficacy in preclinical injury models. We hypothesized that ATTM could confer neuroprotection in a relevant rodent model of regional stroke. METHODS AND RESULTS: Brain ischemia was induced by transient (90-min) middle cerebral artery occlusion (tMCAO) in anesthetized Wistar rats. To mimic a clinical scenario, ATTM (or saline) was administered intravenously just prior to reperfusion. At 24 h or 7 days post-reperfusion, rats were assessed using functional (rotarod test, spontaneous locomotor activity), histological (infarct size), and molecular (anti-oxidant enzyme capacity, oxidative damage, and inflammation) outcome measurements. ATTM-treated animals showed improved functional activity at both 24 h and 7-days post-reperfusion, in parallel with a significant reduction in infarct size. These effects were additionally associated with increased brain antioxidant enzyme capacity, decreased oxidative damage, and a late (7-day) effect on pro-inflammatory cytokine levels and nitric oxide products. CONCLUSION: ATTM confers significant neuroprotection that, along with its known safety profile in humans, provides encouragement for its development as a novel adjunct therapy for revascularization following stroke.

17.
Pediatr Diabetes ; 10(7): 449-54, 2009 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-19490493

RESUMO

OBJECTIVE: To compare the degree of concordance between plasma and capillary glucose for screening of diabetes mellitus in adolescents. METHODS: The plasma and capillary glucose of 119 adolescents aged 10-19 yr (36 males and 83 females) from public schools in Niterói, Rio de Janeiro State, Brazil, were verified after a 12-h fast. Agreement was assessed through kappa statistics (k), McNemar's chi-squared test, and the intraclass correlation coefficient (ICC). The paired Student's t-test for comparison of means, the approaches by Altman and Bland, and the survival-agreement plot were also applied. RESULTS: Mean values of plasma glucose were 7.9 points higher than the capillary values (91.5 vs. 83.6 mg/dL, p < 0.001; ICC = 0.419). A regular agreement between the methods (k = 0.31, p < 0.001) for assessing proportions of adolescents with glycemia > or =100 mg/dL is observed. Using the strategy of adding 8 mg/dL to the capillary levels, the agreement improved (k = 0.46, p < 0.001) and a significant difference was not observed between the estimated prevalences (p = 0.815). CONCLUSIONS: The results suggest a satisfactory agreement between the two methods when capillary glucose is corrected, and this may be a useful and low-cost tool for the epidemiologic investigation of diabetes mellitus prevalence in adolescents.


Assuntos
Glicemia/metabolismo , Capilares/fisiologia , Diabetes Mellitus/sangue , Diabetes Mellitus/diagnóstico , Programas de Rastreamento/métodos , Adolescente , Brasil , Capilares/fisiopatologia , Criança , Feminino , Humanos , Masculino , Desnutrição/epidemiologia , Estado Nutricional , Obesidade/epidemiologia , Sobrepeso/epidemiologia , Probabilidade , Reprodutibilidade dos Testes , Maturidade Sexual , Adulto Jovem
18.
Artigo em Inglês | MEDLINE | ID: mdl-31614765

RESUMO

We aimed to explore the engagement of fathers in a community-based group intervention (Juntos) for children with congenital Zika syndrome (CZS) and their caregivers in Brazil. Six Juntos groups were facilitated from August 2017 to May 2018. We conducted a qualitative study to evaluate the feasibility and acceptability of the intervention for fathers of children with CZS. Methods included participant observation, focus group discussions, and semi-structured interviews of fathers with a child enrolled in the program. Data collected were transcribed, coded and thematically analyzed to explore father preference for, and beliefs about the intervention and to assess potential barriers and enablers to their involvement. Forty-nine families (61 participants) enrolled, of whom 20% (12/61) were fathers. Seven (58%) fathers attended more than 7 out of 10 sessions. The content of Juntos was found to be acceptable to those fathers who attended. Participation in the group offered fathers the opportunity to share experiences of caring for their child and demonstrate their importance as care agents. Work commitments, and the view of mothers as primary caregivers were barriers to engagement of fathers. Facilitators to engagement included a presentation of clear objectives for fathers' involvement and the opportunity to learn a practical skill related to caring for their child. A better understanding of the perspectives of fathers is crucial to help increase their involvement in parenting interventions.


Assuntos
Adaptação Psicológica , Cuidadores/psicologia , Pai/psicologia , Poder Familiar/psicologia , Infecção por Zika virus/psicologia , Adulto , Brasil , Grupos Focais , Humanos , Masculino , Pesquisa Qualitativa
19.
Acta Crystallogr C Struct Chem ; 75(Pt 3): 320-328, 2019 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-30833527

RESUMO

Three imidazole hydrazone compounds, namely 2-(4-nitro-1H-imidazol-1-yl)-N'-[1-(pyridin-2-yl)ethylidene]acetohydrazide, C12H12N6O3, (1), 2-(2-nitro-1H-imidazol-1-yl)-N'-[1-(pyridin-2-yl)ethylidene]acetohydrazide, C12H12N6O3, (2), and 2-(2-nitro-1H-imidazol-1-yl)-N'-[(phenyl)(pyridin-2-yl)methylidene]acetohydrazide, C17H14N6O3, (3), were obtained and fully characterized, including their crystal structure determinations. While all the compounds proved not to be cytotoxic to J774.A1 macrophage cells, (1) and (3) exhibited activity against Leishmania chagasi, whereas (2) was revealed to be inactive. Since both (1) and (3) exhibited antileishmanial effects, while (2) was devoid of activity, the presence of the acetyl or benzoyl groups was possibly not a determining factor in the observed antiprotozoal activity. In contrast, since (1) and (3) are 4-nitroimidazole derivatives and (2) is a 2-nitroimidazole-derived compound, the presence of the 4-nitro group probably favours antileishmanial activity over the 2-nitro group. The results suggested that further investigations on compounds (1) and (3) as bioreducible antileishmanial prodrug candidates are called for.

20.
Cad Saude Publica ; 35(12): e00233718, 2019.
Artigo em Português | MEDLINE | ID: mdl-31800795

RESUMO

The experience with an intervention program conducted in an educational institution and targeted to families of children with congenital Zika syndrome, which includes multiple disabilities, revealed the challenges and strides with the entry of these families in the school system. This article aimed to explore the findings from a study conducted after the conclusion of an intervention program, using semi-open interviews with professional staff at the institution and the possible contributions towards establishing inter-sector relations aimed at school inclusion of children with disabilities. A change was seen, as a result of the program, in the relationship between the families and the professionals at the educational institution, whereby the families had room to voice their fears and discuss the school's role in the lives of their children with disabilities. The professionals thus came to see the families taking a more active stance. This experience can favor other services and municipalities that seek school inclusion for children and adolescents with disabilities, as well as their social inclusion and that of their families.


Com base na experiência de um programa de intervenção para famílias de crianças com a síndrome congênita do vírus Zika, que inclui múltiplas deficiências, em uma instituição de educação, foram observados os desafios e conquistas encontrados com a entrada dessas famílias no sistema escolar. O objetivo deste artigo foi explorar os achados de pesquisa realizada após a conclusão de um programa de intervenção mediante entrevistas semiabertas com profissionais da instituição, e as possíveis contribuições para a construção das relações intersetoriais visando à inclusão escolar de crianças com deficiência. É possível constatar uma mudança provocada pelo programa na relação entre as famílias e os profissionais da instituição de educação; as famílias tiveram espaço para elaborar seus receios e discutir o papel da escola na vida de crianças com deficiência. Dessa forma, os profissionais passaram a vê-las em uma posição mais ativa. Acredita-se que esta experiência possa favorecer outros serviços e municípios que busquem a inclusão escolar de crianças e adolescentes com deficiência assim como sua inclusão social e de suas famílias.


A partir de la experiencia de un programa de intervención para familias de niños con el síndrome congénito del virus Zika, que incluye múltiples discapacidades, en una institución educativa se observaron los desafíos y logros que se consiguieron tras la entrada de esas familias en el sistema escolar. El objetivo de este artículo fue analizar los resultados de la investigación realizada, tras la conclusión de un programa de intervención, a través de entrevistas semiabiertas con profesionales de la institución, así como las posibles contribuciones en la construcción de relaciones intersectoriales, con el fin de la inclusión escolar de niños con discapacidad. Es posible observar el cambio provocado por el programa en la relación entre las familias y los profesionales de la institución educativa, debido a que las familias contaron con un espacio para exponer sus recelos y discutir el papel de la escuela en la vida de niños con discapacidad. De esta forma, los profesionales pasaron a ser vistos desde una posición más activa. Se cree que esta experiencia puede favorecer a otros servicios y municipios que busquen la inclusión escolar de niños y adolescentes con discapacidad, así como su inclusión social y la de sus familias.


Assuntos
Comportamento Cooperativo , Prestação Integrada de Cuidados de Saúde , Pessoas com Deficiência , Infecção por Zika virus/complicações , Brasil , Humanos , Instituições Acadêmicas
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