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Introdução: O conhecimento das percepções de familiares acerca da participação e comunicação de seus filhos com PC (Paralisia Cerebral) não oralizados contribui com processos educacionais e terapêuticos centrados na pessoa e na família. Objetivo: Conhecer aspectos da participação e comunicação de crianças e adolescentes com PC não oralizados, bem como fatores que favorecem ou dificultam o uso da CSA (Comunicação Suplementar e/ou Alternativa) no ambiente familiar e na escola. Método: Estudo descritivo e transversal de abordagem qualitativa, com amostra de cinco mães de alunos com PC não oralizados. Resultados: As mães relatam barreiras à participação de seus filhos e reconhecem a importância da comunicação nas interações e nas atividades familiares. Mencionam, também, não terem alcançado uso funcional da CSA, em casa, mas expressam satisfação com o nível de comunicação que têm com seus filhos. Por outro lado, abordam dificuldades de comunicação quando não identificam os desejos de seus filhos ou quando eles estão com outros interlocutores. Conclusão: Os achados evidenciam participação reduzida das crianças e do adolescente do estudo, e pouco, ou nenhum uso da CSA. Diante das dificuldades relatadas pelas participantes, os achados reforçam a necessidade de equipar os familiares, no sentido de promoverem a participação e a comunicação de seus filhos. Reforça-se a importância de profissionais de CSA e professores de educação especial trabalhar em parceria com os familiares, a fim de expandir as maneiras como interagem e se comunicam com seus filhos, e vice-versa, visando uma maior participação dos mesmos.
Introduction: Knowing family members' perceptions about the participation and communication of their children with non-speaking CP (Cerebral Palsy), contributes to educational and therapeutic processes centered on the person and family. Aim: Become acquainted with participation and communication aspects of children and adolescents with non-speaking CP, as well as factors that favor or hinder AAC (Augmentative Alternative Communication) use in the family environment and school. Method: Descriptive and cross-sectional study with a qualitative approach, with a sample of five mothers of students with non-speaking CP. Results: Mothers report barriers to their children's participation and recognize the importance of communication in family interactions and activities. They mention not having achieved functional use of AAC at home, but express satisfaction with the level of communication they have with their children. On the other hand, they address communication difficulties when they are unable to identify their children's wishes or when their children are with other interlocutors. Conclusion: The findings show reduced participation of the children and the adolescent in the study, as well as little or no AAC use. In view of the difficulties reported by the participants, the findings reinforce the need to equip family members, in order to promote these children's communication and participation. The importance of AAC professionals and special education teachers working in partnerships with families is reinforced. These professionals can help expand the ways in which mothers interact and communicate with their children, and vice versa, aiming at greater participation among them.
Introducción: Conocer las percepciones de los familiares sobre la participación y comunicación de sus hijos con PC (Parálisis Cerebral) no hablantes, contribuye a procesos educativos y terapéuticos centrados en la persona y la familia. Objetivo: Conocer aspectos de la participación y comunicación de niños y adolescentes con PC no hablantes, así como factores que favorecen o dificultan el uso de la CAA (Comunicación Aumentativa y Alternativa) en el ámbito familiar y en la escuela. Método: Estudio descriptivo y transversal con enfoque cualitativo, con una muestra de cinco madres de alumnos con PC no hablantes. Resultados: Las madres relatan barreras para la participación de sus hijos y reconocen la importancia de la comunicación en las interacciones y en las actividades familiares. Mencionan no haber logrado uso funcional de la CAA en casa, pero expresan satisfacción por el nivel de comunicación que tienen con sus hijos. Por otro lado, abordan las dificultades de comunicación cuando no identifican los deseos de sus hijos o cuando ellos están con otros interlocutores. Conclusión: Los hallazgos muestran una participación reducida de los niños y adolescente en el estudio y poco o ningún uso de CAA. Los hallazgos refuerzan la necesidad de equipar a las familias para promover la participación y comunicación de sus hijos. Se refuerza la importancia de que profesionales de CAA y maestros de educación especial trabajen en colaboración con las familias para ampliar las formas en que interactúan y se comunican con sus hijos, y viceversa, buscando una mayor participación de estos.
Assuntos
Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Percepção , Mães , Comunicação não Verbal , Paralisia Cerebral , Estudos Transversais , Auxiliares de Comunicação para Pessoas com Deficiência , Barreiras de Comunicação , Pesquisa Qualitativa , Habilidades SociaisRESUMO
Bovine clinical mastitis caused by Staphylococcus spp. is a serious and widespread disease in the world of dairy farming. Antimicrobial therapy is of fundamental importance in the prevention and treatment of infectious mastitis, but the indiscriminate use of antimicrobials acts as a determining factor for the spread of the disease. The present study evaluated the resistance profiles of 57 Staphylococcus spp. isolated from bovine clinical mastitis to beta-lactams and gentamicin, relating characteristics of phenotype (in vitro susceptibility tests) and genotype (detection and expression of genes encoding resistance - mecA, mecALGA251, blaZ, femA, femB, and aacA-aphD - using PCR and RT-PCR, respectively). One or more genes coding for resistance to different antimicrobials were detected in 50 Staphylococcus spp. isolates. The femA and femB genes were the most frequent (75.4% for both). The observed expression of the genes was as follows: blaZ (60%), femA (39.5%), aacA-aphD (50%), femB (32.6%), mecA (8.3%), and mecALGA251 (0%). Considering the relevance of the genus Staphylococcus to bovine mastitis, this study aimed to elucidate aspects regarding the genotypic and phenotypic profiles of these microorganisms so as to contribute to the development of effective strategies for mastitis control.(AU)
A mastite clínica bovina causada por Staphylococcus spp. é uma doença grave e generalizada no mundo da pecuária leiteira. A terapia antimicrobiana é de fundamental importância na prevenção e no tratamento da mastite infecciosa, mas o uso indiscriminado de antimicrobianos atua como fator determinante para a disseminação da doença. O presente estudo avaliou os perfis de resistência de 57 Staphylococcus spp. isolados de mastite clínica bovina em relação ao uso de betalactâmicos e gentamicina, relacionando características do fenótipo (testes de suscetibilidade in vitro) e genótipo (detecção e expressão de genes que codificam resistência - mecA, mecALGA251, blaZ, femA, femB, e aacA-aphD - usando PCR e RT-PCR, respectivamente). Um ou mais genes que codificam resistência a diferentes antimicrobianos foram detectados em 50 Staphylococcus spp. isolados. Os genes femA e femB foram os mais frequentes (75,4% para ambos). A expressão observada dos genes foi a seguinte: blaZ (60%), femA (39,5%), aacA-aphD (50%), femB (32,6%), mecA (8,3%) e mecALGA251 (0%). Considerando-se a relevância do gênero Staphylococcus para a mastite bovina, este estudo teve como objetivo elucidar aspectos referentes aos perfis genotípico e fenotípico desses microrganismos, a fim de contribuir para o desenvolvimento de estratégias eficazes para o controle da mastite.(AU)
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Staphylococcus/isolamento & purificação , Expressão Gênica/genética , Resistência beta-Lactâmica/genética , Farmacorresistência Bacteriana/genética , Mastite Bovina/microbiologia , Gentamicinas , Reação em Cadeia da Polimerase Via Transcriptase ReversaRESUMO
Cervical cancer is associated with the human papilloma virus (HPV) and nowadays is the fourth most frequent cancer among women. One of the treatments for this disease is based on the application of imiquimod. In this study, we postulated that the use of imiquimod in nanoemulsion results in a better antitumoral effect than the drug administered in its nonencapsulated form for the treatment of cervical cancer. Permeability studies using vaginal mucosa, as membrane, and in vitro studies involving cervical cancer cells (viability, clonogenic assay, and cell death analysis) were performed. We showed that low amount of encapsulated imiquimod permeated the vaginal mucosa. However, a higher percentage of cells died after the treatment with low amount (3.0 µmol L-1) of the formulation compared to the free drug. In addition, the innovative formulation presented a combinatory mechanism of cell death involving autophagy and apoptosis. Our results demonstrate that the imiquimod-loaded nanoemulsioncan be an alternative product for the treatment of cervical cancer validating the hypothesis.
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Imiquimode/administração & dosagem , Papillomaviridae/efeitos dos fármacos , Neoplasias do Colo do Útero/tratamento farmacológico , Animais , Linhagem Celular Tumoral , Composição de Medicamentos , Emulsões , Feminino , Humanos , Nanopartículas , Suínos , Neoplasias do Colo do Útero/virologiaRESUMO
This article examines student engagement in an inquiry-based learning activity, planned to provide students with elements in the social, epistemic, and conceptual dimensions related to the scientific practice in immunology. The activity was applied to 39 groups of students enrolled in immunology or biochemistry courses in a public university in Brazil. Students performed data-collection through the execution of an in vitro assay. We analyzed how students represent data and use them to support their claims in their written constructs. To clarify which are the productive epistemologies in students' reports, we developed a framework for epistemic practice analysis. Our findings point to a pattern of several epistemic practice categories in their written text, mostly related to the particular contingences of data analysis, rather than to theoretical concepts. In addition, we observed that students performed literary inscriptions to represent their data; however, they tended not to cite all data obtained in their written texts. These results suggest that immunology education strategies should provide students with approaches that explore the role of data representation in the scientific text rhetoric. © 2019 International Union of Biochemistry and Molecular Biology, 47(6):672-680, 2019.
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Alergia e Imunologia/educação , Aprendizagem , Brasil , Currículo , Avaliação Educacional , Humanos , Conformação Proteica , Estudantes , UniversidadesRESUMO
Lambari-do-rabo-amarelo Astyanax altiparanae in the wild reproduce during spring and summer, but females undergo vitellogenesis throughout the year, including the non-spawning winter period when water temperatures are low. The present study investigated the physiological role of temperature modulation on the hypothalamus-pituitary-gonads axis of lambari during winter, as well as the effects of gonadotropin releasing hormone agonist (GnRHa) therapy. Captive females were exposed to two different temperatures (20⯰C and 27⯰C) and were injected weekly with GnRHa for 21â¯days during winter (Control, CTR; Low dose; LD and high dose of GnRHa, HD). At the end of the 21-days period gonadosomatic index (GSI), oocyte stage of development and theoretical fecundity were evaluated, together with plasma levels of 17ß-estradiol (E2). Gene expression of the two pituitary gonadotropins follicle-stimulating hormone (fshß) and luteinizing hormone (lhß), as well as hepatic vitellogenin-A (vtgA) expression were also analyzed. At the end of the experimental period, females from the six different experimental conditions were induced to spawn using human chorionic gonadotropin (hCG). Spawning performance parameters and plasma levels of the maturation inducing steroid (MIS) were analyzed. Gene expression of fshß did not change with temperature manipulation, but females exposed to 27⯰C and supplemented with a HD of GnRHa exhibited an increased fshß gene expression, associated with higher E2 levels. The higher water temperature alone was able to increase E2 levels. At both water temperatures GnRHa injections induced a decrease in E2 levels. GnRHa injected females had a lower vtgA gene expression levels at 20⯰C. Even with differences in the gene expression of gonadotropins among the various temperature/GnRHa treatments, GSI and oocyte diameter did not change, but GnRHa enhanced the number of vitellogenic oocytes at 20⯰C. The reproductive performance of lambari induced to spawn with hCG was better after the combined treatment with GnRHa and summer temperature.
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Cruzamento , Characidae/fisiologia , Hormônio Liberador de Gonadotropina/farmacologia , Reprodução/efeitos dos fármacos , Estações do Ano , Temperatura , Animais , Characidae/sangue , Estradiol/sangue , Feminino , Fertilidade/efeitos dos fármacos , Subunidade beta do Hormônio Folículoestimulante/genética , Subunidade beta do Hormônio Folículoestimulante/metabolismo , Gametogênese/efeitos dos fármacos , Regulação da Expressão Gênica/efeitos dos fármacos , Modelos Lineares , Hormônio Luteinizante Subunidade beta/genética , Hormônio Luteinizante Subunidade beta/metabolismo , Masculino , Oócitos/efeitos dos fármacos , Oócitos/metabolismo , Ovário/efeitos dos fármacos , Ovário/metabolismo , Reprodução/fisiologia , Esteroides/sangue , Vitelogeninas/genética , Vitelogeninas/metabolismoRESUMO
Development, ontogeny of the digestive system and the fatty-acid (FA) profile, were analysed during development of Epinephelus marginatus. Larvae were analysed 7 and 17 days post fertilization (dpf) to evaluate fatty-acid profile and morphological variables, respectively. Epinephelus marginatus larvae have relatively slow development of digestive structures, but were able to capture, ingest and digest prey by 5 dpf. Eggs were composed of high percentages of polyunsaturated fatty acids (PUFA) in phospholipids. The percentage of n3 PUFAs was higher than n6, especially docosahexaenoic acid (DHA), which exhibited higher levels compared with other marine species during the first 3 days of development, both in terms of phospholipids and triglycerides. The larvae present a high content of docosahexaenoic acid-eicosapentaenoic acid (DHA-EPA) and, during this phase, live food of small size was required (copepods or SS-strain Brachionus rotundiformes), enriched with DHA-EPA. These results may guide future studies on the contribution of FAs required during this stage of the life cycle of E. marginatus, to advance knowledge of the use of these FAs throughout ontogeny and contribute to the culture of this species commercial production or restocking.
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Bass , Ácidos Graxos/análise , Animais , Ácidos Docosa-Hexaenoicos/análise , Ácido Eicosapentaenoico/análise , Ácidos Graxos Ômega-3 , Ácidos Graxos Insaturados/análise , Feminino , Larva/crescimento & desenvolvimento , MasculinoRESUMO
A procedure for light and heavy crude oils digestion by microwave-induced combustion (MIC) is proposed for the first time for further rare earth elements (REE) determination by inductively coupled plasma mass spectrometry (ICP-MS) equipped with an ultrasonic nebulizer (USN). Samples of crude oil (API density of 10.8-23.5, up to 250 mg) were inserted in polycarbonate capsules and combusted using 20 bar of oxygen and 50 µL of 6 mol L(-1) ammonium nitrate as igniter. Nitric acid solutions (1-14.4 mol L(-1)) were evaluated for analyte absorption and a reflux step was applied after combustion (5 min of microwave irradiation at 1400 W) in order to achieve better analyte recoveries. Accuracy was evaluated using a spiked sample and also by comparison of results obtained by microwave-assisted digestion combined to ultraviolet radiation (MW-UV) and by neutron activation analysis (NAA). Using 3 mol L(-1) HNO3, quantitative recoveries (better than 97%) were obtained for all analytes. Blank values were always negligible. Agreement was higher than 96% for La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y by comparison of results with those obtained by MW-UV and by NAA (only for La, Ce, Nd, Sm, and Yb). Residual carbon content in digests using MIC was always below 1%. As an advantage over conventional procedures for crude oil digestion, using MIC, it was possible to use diluted acid as absorbing solution, obtaining better limits of detection and avoiding interferences in REE determination by USN-ICP-MS.
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Neutrophils are involved in the early stages of immune responses to pathogens. Here, we investigated the role of neutrophils during the establishment of Leishmania amazonensis infection in BALB/c and C57BL/6 mice. First, we showed an accumulation of neutrophils between 6 and 24 h post-infection, followed by a reduction in neutrophil numbers after 72 h. Next, we depleted neutrophils prior to infection using RB6-8C5 or 1A8 mAb. Neutrophil depletion led to faster lesion development, increased parasite numbers and higher arginase activity during the first week of infection in BALB/c mice, but not in C57BL/6 mice. Increased susceptibility was accompanied by augmented levels of anti-L. amazonensis IgG and increased production of IL-10 and IL-17. Because IL-10 is a mediator of susceptibility to Leishmania infection, we blocked IL-10 signalling in neutrophil-depleted mice using anti-IL-10R. Interestingly, inhibition of IL-10 signalling abrogated the increase in parasite loads observed in neutrophil-depleted mice, suggesting that parasite proliferation is at least partially mediated by IL-10. Additionally, we tested the effect of IL-17 in inflammatory macrophages and observed that IL-17 increased arginase activity and favoured parasite growth. Taken together, our data indicate that neutrophils control parasite numbers and limit lesion development during the first week of infection in BALB/c mice.
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Leishmania mexicana/crescimento & desenvolvimento , Leishmania mexicana/imunologia , Leishmaniose Cutânea/imunologia , Leishmaniose Cutânea/parasitologia , Neutrófilos/imunologia , Animais , Anticorpos Antiprotozoários/sangue , Arginase/metabolismo , Feminino , Imunoglobulina G/sangue , Interleucina-10/metabolismo , Interleucina-17/metabolismo , Cinética , Ativação de Macrófagos , Macrófagos/imunologia , Macrófagos/metabolismo , Macrófagos/parasitologia , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Endogâmicos C57BL , Infiltração de Neutrófilos , Carga Parasitária , Linfócitos T Reguladores/imunologiaRESUMO
The suprachiasmatic nucleus (SCN), which is the main circadian biological clock in mammals, is composed of multiple cells that function individually as independent oscillators to express the self-sustained mRNA and protein rhythms of the so-called clock genes. Knowledge regarding the presence and localization of the proteins and neuroactive substances of the SCN are essential for understanding this nucleus and for its successful manipulation. Although there have been advances in the investigation of the intrinsic organization of the SCN in rodents, little information is available in diurnal species, especially in primates. This study, which explores the pattern of expression and localization of PER2 protein in the SCN of capuchin monkey, evaluates aspects of the circadian system that are common to both primates and rodents. Here, we showed that PER2 protein immunoreactivity is higher during the light phase. Additionally, the complex organization of cells that express vasopressin, vasoactive intestinal polypeptide, neuron-specific nuclear protein, calbindin and calretinin in the SCN, as demonstrated by their immunoreactivity, reveals an intricate network that may be related to the similarities and differences reported between rodents and primates in the literature.