RESUMO
In the study of tumorigenesis, the involvement of molecules within the extracellular matrix (ECM) is crucial. ADAMTSs (A Disintegrin and Metalloproteinase with Thrombospondin motifs), a group of secreted proteases known for their role in ECM remodeling, were primarily considered to be extracellular proteases. However, our research specifically detected ADAMTS-1, a member of this family, predominantly within the nucleus of mammary cells. Our main objective was to understand the mechanism of ADAMTS-1 translocation to the nucleus and its functional significance in this cellular compartment. Our investigation uncovered that nuclear ADAMTS-1 was present in cells exhibiting an epithelial phenotype, while cells of mesenchymal origin contained the protease in the cytoplasm. Moreover, disruption of ADAMTS-1 secretion, induced by Monensin treatment, resulted in its accumulation in the cytoplasm. Notably, our research indicated that alterations in the secretory pathways could influence the protease's compartmentalization. Additionally, experiments with conditioned medium from cells containing nuclear ADAMTS-1 demonstrated its internalization into the nucleus by HT-1080 cells and fibroblasts. Furthermore, heightened levels of ADAMTS-1 within the ECM reduced the migratory potential of mesenchymal cells. This highlights the potential significance of nuclear ADAMTS-1 as a critical component within the tumor microenvironment due to its functional activity in this specific cellular compartment.
Assuntos
Proteína ADAMTS1 , Movimento Celular , Núcleo Celular , Matriz Extracelular , Trombospondinas , Humanos , Proteína ADAMTS1/genética , Proteína ADAMTS1/metabolismo , Carcinogênese/metabolismo , Endopeptidases/metabolismo , Matriz Extracelular/metabolismo , Fibroblastos/metabolismo , Trombospondinas/metabolismo , Microambiente Tumoral , Núcleo Celular/metabolismoRESUMO
Laminin peptides influence cancer biology. We investigated the role of a laminin-derived peptide C16 regulating invadopodia molecules in human prostate cancer cells (DU145). C16 augmented invadopodia activity of DU145 cells, and stimulated expression Tks4, Tks5, cortactin, and membrane-type matrix metalloproteinase 1. Reactive oxygen species generation is also related to invadopodia formation. This prompted us to address whether C16 would induce reactive oxygen species generation in DU145 cells. Quantitative fluorescence and flow cytometry showed that the peptide C16 increased reactive oxygen species in DU145 cells. Furthermore, significant colocalization between Tks5 and reactive oxygen species was observed in C16-treated cells. Results suggested that the peptide C16 increased Tks5 and reactive oxygen species in prostate cancer cells. The role of C16 increasing Tks and reactive oxygen species are novel findings on invadopodia activity.
Assuntos
Proteínas Adaptadoras de Transporte Vesicular/metabolismo , Laminina/farmacologia , Podossomos/efeitos dos fármacos , Neoplasias da Próstata/tratamento farmacológico , Espécies Reativas de Oxigênio/metabolismo , Linhagem Celular Tumoral , Movimento Celular/efeitos dos fármacos , Humanos , Laminina/metabolismo , Masculino , Invasividade Neoplásica/patologia , Neoplasias da Próstata/metabolismo , Proteólise/efeitos dos fármacosRESUMO
BACKGROUND: This paper describes the transmission of hepatitis A virus (HAV) to two blood recipients from a healthy donor that later presented to the blood bank with jaundice. METHODS: The RNA of HAV was detected by qualitative nested reverse transcription polymerase chain reaction (nested RT-PCR) and quantified by real-time RT-PCR. HAV RNA samples were genotyped by direct sequencing of PCR products. A sequence from a fragment of 168 bp from the VP1/2A HAV region was used to construct a phylogenetic tree. CASE REPORT: A 31-year-old male donor accepted for donation of a whole blood unit returned to the blood bank with clinical jaundice 20 days after donation. His serological and NAT tests were negative for HBV and HCV. Serological tests for HAV IgM and IgG were negative on donation sample but positive on follow-up sample, confirming donor's HAV acute infection. Both recipients of red blood cells (R1) and platelet concentrate (R2) from the same implicated donation were HAV IgM-negative and IgG-positive. Qualitative PCR was positive on samples from all three individuals and phylogenetic analysis of viruses proved HAV transmission to the two recipients of blood products. HAV viral load on donor follow-up sample and the platelet recipient was 1.3 and 1.5 × 10(3) IU/ml, respectively. The RBC recipient, also infected by HCV, was undergoing bone marrow transplantation and died from fulminant hepatitis, 26 days after the implicated HAV transfusion. CONCLUSION: The blood donor, a garbage collector, spontaneously returned to the blood bank when developing jaundice. This highlights the importance of donor education to immediately report to blood banks of any signs and symptoms related to infectious disease developed after blood donation. The fact that one immunocompromised patient with HCV infection died from fulminant hepatitis after receiving a HAV-contaminated platelet transfusion underpins the importance of a HAV vaccination program for these group of patients.
RESUMO
BACKGROUND AND RATIONALE: Epidemics of hepatitis B and C are a public health burden, and their prevalence in Brazil varies among regions. We determined the prevalence of hepatitis markers in an urban university population in order to support the development of a comprehensive program for HBV immunization and HBV/HCV diagnosis. Students, employees, and visitors (n = 2,936, 31 years IQR 24.5-50, female = 69.0% and 81.1% with at least 12 years of education) were enrolled from May to November 2013. Antibodies against hepatitis B surface antigen (anti-HBs), against hepatitis B core antigen (anti-HBc), and hepatitis B surface antigen (HBsAg) were detected with enzyme immunoassays and anti-hepatitis C virus (anti-HCV) antibodies with a chemiluminescence immunoassay. The results were confirmed with polymerase chain reaction for HCV and nucleic acid amplification test for hepatitis B virus (HBV). RESULTS: The overall prevalence of markers among the participants was 0.136% (95% confidence interval [CI]: 0.003-0.270) for HBsAg, 6.44% (95% CI: 5.55-7.33%) for anti-HBc, 50.8% (95% CI: 48.9-52.7%) for anti-HBs > 10 mIU/mL, and 0.44% (95% CI: 0.20-0.68) for anti-HCV. Almost 30.4% had anti-HBs titers > 100 mIU/mL. Participants with a detectable HCV viral load (n = 9) were infected with genotype 1a. CONCLUSIONS: In an urban university population, in which 80% of participants had > 11 years of education, prevalence increased with age, and self-declared ethnicity for anti-HBc and with age, marital status and professional activity for anti-HCV antibodies. A periodical offer of HCV rapid testing should be implemented, and HBsAg rapid testing should be offered to individuals above 20 years of age.
Assuntos
Hepacivirus , Vírus da Hepatite B , Hepatite B/epidemiologia , Hepatite C/epidemiologia , Universidades , Saúde da População Urbana , Adolescente , Adulto , Biomarcadores/sangue , Brasil/epidemiologia , Criança , Pré-Escolar , Estudos Transversais , DNA Viral/sangue , Feminino , Genótipo , Hepacivirus/genética , Hepacivirus/imunologia , Hepatite B/sangue , Hepatite B/diagnóstico , Anticorpos Anti-Hepatite B/sangue , Vírus da Hepatite B/genética , Vírus da Hepatite B/imunologia , Hepatite C/sangue , Hepatite C/diagnóstico , Anticorpos Anti-Hepatite C/sangue , Humanos , Masculino , Pessoa de Meia-Idade , Fenótipo , Valor Preditivo dos Testes , Prevalência , Fatores de Risco , Estudos Soroepidemiológicos , Fatores Socioeconômicos , Fatores de Tempo , Carga Viral , Adulto JovemRESUMO
Brevipalpus phoenicis (Geijskes) is a cosmopolitan and polyphagous mite that transmits important phytoviruses, such as coffee ringspot virus, passion fruit green spot virus and Citrus leprosis virus C. To characterise the dynamics of the probability and the rate of B. phoenicis infestation in response to edaphic and climatic factors, monthly inspections were performed in nine orchards in a citrus region of the State of Bahia, Brazil, for 35 months. Three fruits per plant were examined using a magnifying glass (10×) on 21 plants distributed along a "W"-shaped path in each orchard. Meteorological data were collected from a conventional station. To determine the correlations among the climatic variables, the data were analysed using Spearman correlations. Variables were selected by principal component analysis, and those that contributed the most to differentiate the groups were evaluated via a Mann-Whitney test. Using the quantile-quantile method, the limit values for the following climatic variables were determined: temperature (24.5 °C), photoperiod (12 h), relative humidity (83%), evapotranspiration (71 mm) and rainy days (14 days). The combination of longer days, higher temperatures, lower relative humidity levels and lower evapotranspiration increased the probability of B. phoenicis infestation, whereas successive rain events decreased that risk. Infestation rates were negatively affected by relative humidity levels above 83% and were positively affected by a decreasing available soil-water fraction and increasing insolation and photoperiod.
Assuntos
Ácaros e Carrapatos/fisiologia , Clima , Solo/química , Animais , Brasil , Citrus/crescimento & desenvolvimento , Cadeia Alimentar , Dinâmica PopulacionalRESUMO
Background: Brazil's Unified Health System (SUS) ensures universal, equitable, and excellent quality health coverage for all. The broad right to health, supported by the Constitution, has led to excessive litigation in the public sector. This has negatively impacted the financial stability of SUS, created inequality in children and adolescents' access to healthcare, and affected communication between the healthcare system and the judiciary. The enactment of Law Number 13.655 on 25 April 2018, proposed significant changes in judicial decisions. This study aimed to investigate decision-making changes in health litigation involving children and adolescents following the implementation of the new normative model. Methods: The study is cross-sectional, analyzing 3753 national judgment documents from all State Courts of Brazil, available on their respective websites from 2014 to 2020. It compares regional legal decisions before and after the promulgation of Law Number 13.655/2018. Data tabulation, statistical analysis, textual analysis, coding, and counting of significant units in the collected documents were performed. The results of data cross-referencing are presented in tables and diagrams. Results: The majority (96.86%) of legal claims (3635 cases) received partial or total provision of what was prescribed by the physician. The Judiciary predominantly handled these cases individually. The analysis indicates that the decisions made did not adhere to the norms established in 2018. Conclusion: Regional heterogeneity in health litigation was observed, and there was no significant variability in decisions during the studied period, even after the implementation of the new normative paradigm in 2018. Technical-scientific support was undervalued by the magistrates. Prioritizing litigants undermines equity in access to Universal Health Coverage for children and adolescents.
Assuntos
Acessibilidade aos Serviços de Saúde , Cobertura Universal do Seguro de Saúde , Humanos , Brasil , Adolescente , Cobertura Universal do Seguro de Saúde/legislação & jurisprudência , Criança , Acessibilidade aos Serviços de Saúde/legislação & jurisprudência , Estudos Transversais , Programas Nacionais de Saúde/legislação & jurisprudência , Direito à Saúde/legislação & jurisprudênciaRESUMO
BACKGROUND: We aimed to evaluate the costs of GenoType® MTBDRplus and MTBDRsl incurred during the diagnosis of first- and second-line drug-resistant tuberculosis (TB) in São Paulo, Brazil. METHODS: Mean and activity-based costs of GenoType® were calculated in a referral laboratory for TB in Brazil. RESULTS: The mean cost value and activity-based cost of GenoType® MTBDRplus were USD 19.78 and USD 35.80 and those of MTBDRsl were USD 54.25 and USD 41.85, respectively. CONCLUSIONS: The cost of GenoType® MTBDRplus was reduced owing to the high number of examinations performed and work optimization.
Assuntos
Mycobacterium tuberculosis , Tuberculose Resistente a Múltiplos Medicamentos , Humanos , Mycobacterium tuberculosis/genética , Brasil , Sensibilidade e Especificidade , Testes de Sensibilidade Microbiana , Tuberculose Resistente a Múltiplos Medicamentos/diagnóstico , Tuberculose Resistente a Múltiplos Medicamentos/tratamento farmacológico , Genótipo , Custos e Análise de Custo , Antituberculosos/uso terapêuticoRESUMO
Zika virus (ZIKV) diagnosis is currently performed through an invasive, painful, and costly procedure using molecular biology. Consequently, the search for a non-invasive, more cost-effective, reagent-free, and sustainable method for ZIKV diagnosis is of great relevance. It is critical to prepare a global strategy for the next ZIKV outbreak given its devastating consequences, particularly in pregnant women. Attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopy has been used to discriminate systemic diseases using saliva; however, the salivary diagnostic application in viral diseases is unknown. To test this hypothesis, we intradermally challenged interferon-gamma gene knockout C57/BL6 mice with ZIKV (50 µL,105 FFU, n = 7) or vehicle (50 µL, n = 8). Saliva samples were collected on day three (due to the peak of viremia) and the spleen was also harvested. Changes in the salivary spectral profile were analyzed by Student's t test (p < 0.05), multivariate analysis, and the diagnostic capacity by ROC curve. ZIKV infection was confirmed by real-time PCR of the spleen sample. The infrared spectroscopy coupled with univariate analysis suggested the vibrational mode at 1547 cm-1 as a potential candidate to discriminate ZIKV and control salivary samples. Three PCs explained 93.2% of the cumulative variance in PCA analysis and the spectrochemical analysis with LDA achieved an accuracy of 93.3%, with a specificity of 87.5% and sensitivity of 100%. The LDA-SVM analysis showed 100% discrimination between both classes. Our results suggest that ATR-FTIR applied to saliva might have high accuracy in ZIKV diagnosis with potential as a non-invasive and cost-effective diagnostic tool.
RESUMO
Background: Ameloblastoma is a benign but locally invasive odontogenic epithelial tumor, associated with a high recurrence rate after treatment. The action of enzymes of the metalloproteinase family is important to the degraded extracellular matrix, contributing to invasion. Thus, this study aimed to investigate the gene and protein expression of ADAMTS-1 and versican in ameloblastoma. Materials and Methods: Twenty cases of ameloblastoma (n = 20) and ten dental follicles (DF) (n = 10) were used as a source for immunochemistry and quantitative RT-PCR for determining the protein and mRNA expressions of the concerned genes, respectively. Moreover, western blot and indirect immunofluorescence analysis were performed in AME cells. Results: ADAMTS-1 and versican were overexpressed in DF than ameloblastoma by RT-PCR. However, in the immunolocalization analysis, ADAMTS-1 was expressed in ameloblastoma more than in DF and versican immunostaining obtained a similar pattern between ameloblastoma and DF. Indirect immunofluorescence detected the ADAMTS-1 and versican expression in cell lines derived from ameloblastoma. Western blot from cell lysate and conditioned medium detected ADAMTS-1 bands representing full-length and different processed forms. Monensin treatment confined ADAMTS-1 in the cell cytoplasm. Versican fragments also were detected in different compartments, intracellular and conditioned medium, allowing the versican process by ADAMTS-1. Conclusion: This study showed a distinct expression of ADAMTS-1 and versican in ameloblastoma and DF, with ADAMTS-1 protein higher expression observed in ameloblastoma and possibly cleaved versican. These findings suggested that ADAMTS-1 may participate in tumor invasion, especially for the degradation of substrates (versican) in the ECM.
RESUMO
Background: In last years, few attention has given to the patient's prediagnostic costs when evaluating the introduction of new technologies for tuberculosis (TB) and in this context, this study evaluated patient's costs and cost-effectiveness incurred with TB diagnosis comparing BactecTMMGITTM960 system (MGIT) to the Löwestein-Jensen (LJ) culture in a health center and in a university hospital, in Rio de Janeiro City, Brazil. Methods: Patient's mean costs were evaluated during the diagnosis process and cost-effectiveness based on mean time in days for the adoption of appropriate clinical anti-TB treatment in two health units comparing culture by means LJ and MGIT. Results: The mean cost of LJ and MGIT in the health center was U. S. dollars (US$) 26.6 and US$ 45.13, respectively, and in university hospital was US$ 206.87 and US$ 285.48, respectively. Comparing the two approaches for TB diagnosis incurred by the patients, the incremental cost-effectiveness of MGIT compared to LJ was US$ 0.88 and US$ 4.03 per patient, respectively, to reduce the average time to adopt appropriate treatment. Conclusions: The culture method directly impacts patient costs while waiting for the correct diagnosis and contributing to aggravating costs with patients with TB.
Assuntos
Mycobacterium tuberculosis , Tuberculose Pulmonar , Técnicas Bacteriológicas , Brasil , Análise Custo-Benefício , Humanos , Saúde Pública , Tuberculose Pulmonar/diagnóstico , Tuberculose Pulmonar/tratamento farmacológicoRESUMO
INTRODUCTION: The intensification of research and innovation with the creation of networks of rapid and effective molecular tests as strategies for the end of tuberculosis are essential to avoid late diagnosis and for the eradication of the disease. We aimed to evaluate the cost-effectiveness of Xpert®MTB/RIF (Xpert) in the diagnosis of drug-resistant tuberculosis in reference units, in scenarios with and without subsidies, and the respective cost adjustment for today. METHODS: The analyses were performed considering as criterion of effectiveness, negative culture or clinical improvement in the sixth month of follow-up. The comparison was performed using two diagnostic strategies for the drug susceptibility test (DST), BactecTMMGITTM960 System, versus Xpert. The cost effectiveness and incremental cost-effectiveness ratio (ICER) were calculated and dollar-corrected for American inflation (US$ 1.00 = R$ 5,29). RESULTS: Subsidized Xpert had the lowest cost of US$ 33.48 (R$67,52) and the highest incremental average efficiency (13.57), thus being a dominated analysis. After the inflation was calculated, the mean cost was DST-MGIT=US$ 74.85 (R$ 396,73) and Xpert = US$ 37.33 (R$197,86) with subsidies. CONCLUSIONS: The Xpert in the diagnosis of TB-DR in these reference units was cost-effective with subsidies. In the absence of a subsidy, Xpert in TB-DR is not characterized as cost effective. This factor reveals the vulnerability of countries dependent on international organizations' subsidy policies.
Assuntos
Mycobacterium tuberculosis , Tuberculose Resistente a Múltiplos Medicamentos , Tuberculose , Análise Custo-Benefício , Humanos , Mycobacterium tuberculosis/genética , Sensibilidade e Especificidade , Tuberculose/diagnóstico , Tuberculose Resistente a Múltiplos Medicamentos/diagnósticoRESUMO
ADAMTSs (A Disintegrin And Metalloproteinase with ThromboSpondin motifs) are secreted proteases dependent on Zn2+/Ca2+, involved in physiological and pathological processes and are part of the extracellular matrix (ECM). Here, we investigated if ADAMTS-1 is required for invasion and migration of cells and the possible mechanism involved. In order to test ADAMTS-1's role in ovarian cancer cells (CHO, NIH-OVCAR-3 and ES2) and NIH-3 T3 fibroblasts, we modified the levels of ADAMTS-1 and compared those to parental. Cells exposed to ADAMTS-1-enriched medium exhibited a decline in cell migration and invasion when compared to controls with or without a functional metalloproteinase domain. The opposite was observed in cells when ADAMTS-1 was deleted via the CRISPR/Cas9 approach. The decline in ADAMTS-1 levels enhanced the phosphorylated form of Src and FAK. We also evaluated the activities of cellular Rho GTPases from cell lysates using the GLISA® kit. The Cdc42-GTP signal was significantly increased in the CRISPR ADAMTS-1 ES-2 cells. By a Förster resonance energy transfer (FRET) biosensor for Cdc42 activity in ES-2 cells we demonstrated that Cdc42 activity was strongly polarized at the leading edge of migrating cells with ADAMTS-1 deletion, compared to the wild type cells. As conclusion, ADAMTS-1 inhibits proliferation, polarization and migration.
Assuntos
Proteína ADAMTS1/metabolismo , Proteína cdc42 de Ligação ao GTP/metabolismo , Proteína ADAMTS1/deficiência , Proteína ADAMTS1/genética , Sistemas CRISPR-Cas/genética , Linhagem Celular , Movimento Celular/efeitos dos fármacos , Proliferação de Células/efeitos dos fármacos , Sobrevivência Celular , Feminino , Quinase 1 de Adesão Focal/metabolismo , Fator de Crescimento de Hepatócito/farmacologia , Humanos , Fosforilação , RNA Guia de Cinetoplastídeos/metabolismo , Transdução de Sinais , Quinases da Família src/metabolismoRESUMO
The progression of cancer depends on the interaction between the cells and their microenvironment. Progesterone is a steroid and progestogen sex hormone produced by the corpus luteum, which is a transitory endocrine gland in female mammals and prepares the endometrium for implantation. Also, progesterone is involved in antitumorigenic process in different types of cancer. Our goal is to investigate the role of progesterone in cell invasion and migration. Ovarian cells were treated with different concentrations of progesterone. 500 nM or 1 µM progesterone decreased the migration of the cells in 24 h or less without affecting the viability. Immunoblot showed that treatment with 1 µM progesterone decreased the phosphorylated forms of Src and FAK, and the cells were less polarized. Our results suggest that progesterone interferes with migration and invasion of ovarian cells. Inhibitory experiments inferred the progesterone receptor playing a role in migration and invasion. Decreased phosphorylation of molecules involved in these processes was also found.
Assuntos
Movimento Celular/efeitos dos fármacos , Neoplasias Ovarianas/patologia , Progesterona/farmacologia , Linhagem Celular Tumoral , Relação Dose-Resposta a Droga , Feminino , Proteína-Tirosina Quinases de Adesão Focal/metabolismo , Humanos , Invasividade Neoplásica , Fosforilação/efeitos dos fármacos , Quinases da Família src/metabolismoRESUMO
Background: Drug-resistant tuberculosis (TB) is an ongoing health threat, and the greatest challenge to adequate control of TB in many countries lies in the lack of proper laboratory drug-susceptibility test. The aim of this study was to evaluate the activity-based costs (ABC) of Kit SIRE Nitratase® (Kit SIRE) and compare its values with the conventional drug-susceptibility test. Methods: The ABC was calculated for three different approaches: Kit SIRE (clinical samples and cultures), proportion methods in Lowenstein Jensen (PM-LJ), and the Bactec™ MGIT™ 960 system based on Mycobacterial Research Laboratory's routine. Results: The ABC of Kit SIRE from cultures was US$ 148.54, while from clinical samples was US$ 136.12. In the case of conventional tests, the ABC of Bactec™ MGIT™ 960 was US$ 227.63 and of the PM-LJ was US$ 132.64. The Kit SIRE has a lower ABC when clinical samples are used instead of cultures. Compared to conventional tests, the ABC is similar to the PM-LJ and lower the Bactec™ MGIT™ 960. Conclusion: The Kit SIRE should be used as a screening method in clinical specimens and in culture for laboratories that do not have Bactec™ MGIT™ 960. Therefore, it can be incorporated into the routine of laboratories in countries with low resources and a high burden of TB and drug-resistant TB.
Assuntos
Antituberculosos/farmacologia , Técnicas de Laboratório Clínico/instrumentação , Mycobacterium tuberculosis/efeitos dos fármacos , Kit de Reagentes para Diagnóstico/economia , Brasil , Técnicas de Laboratório Clínico/economia , Recursos em Saúde/economia , Hospitais , Humanos , Testes de Sensibilidade Microbiana/economia , Centros de Atenção Terciária , Tuberculose Resistente a Múltiplos Medicamentos/microbiologiaRESUMO
ABSTRACT Objective: to describe nursing technicians' proxemic behaviors during transfusions in hospitalized clients. Method: a qualitative, descriptive and exploratory study based on non-participant observation, recorded in an instrument prepared from the Theory of Proxemic Behavior. The participants were 18 nursing technicians from a reference hospital for Hematology and Hemotherapy in the Brazilian Southeast Region, from April to December 2022. Data analysis prioritized thematic content. Results: the following stood out: eye contact; instrumental touch; normal tone of voice; and intimate and personal distances. These indicate welcoming, attention and technical vigilance when carrying out the transfusions. Conclusion: there is a need to raise nursing technicians' awareness regarding proxemic behaviors when welcoming clients. That is: expanding listening, bonding and effective interpersonal coexistence, and favoring the reach of comprehensive health care in Hematology and Hemotherapy.
RESUMEN Objetivo: describir los comportamientos proxémicos de técnicos de Enfermería durante transfusiones en clientes internados. Método: estudio cualitativo, descriptivo y exploratorio, basado en la observación no participante y registrado en un instrumento elaborado a partir de la Teoría del Comportamiento Proxémico. Los participantes fueron 18 técnicos de Enfermería de un hospital que es referencia en Hematología y Hemoterapia de la Región Sudeste de Brasil, entre abril y diciembre de 2022. En el análisis de los datos se priorizó el contenido temático. Resultados: se destacó lo siguiente: contacto visual; toque instrumental; tono de voz normal; y distancias íntima y personal; los cuales indican buen recibimiento, atención y vigilancia técnica al realizar las transfusiones. Conclusión: es necesario generar conciencia en los técnicos de Enfermería con respecto a los comportamientos proxémicos al recibir a los clientes. Eso implica: prestar más atención al escuchar y ampliar los vínculos y la convivencia interpersonal efectiva, además de favorecer el alcance de las medidas de atención en integrales en Hematología y Hemoterapia.
RESUMO Objetivo: descrever os comportamentos proxêmicos de técnicos de enfermagem durante o ato transfusional em clientes hospitalizados. Método: estudo qualitativo, descritivo e exploratório, pautado em observação não participante, registrado em instrumento elaborado a partir da teoria do comportamento proxêmico. Participaram 18 técnicos de enfermagem de um hospital referência em hematologia e hemoterapia da Região Sudeste do Brasil, de abril a dezembro de 2022. A análise de dados priorizou o conteúdo temático. Resultados: destacaram-se o contato visual; o toque instrumental; o tom de voz normal e as distâncias íntima e pessoal. Estes, indicativos de acolhimento, atenção e vigilância técnica à realização do ato transfusional. Conclusão: há necessidade de despertar a consciência dos técnicos de enfermagem em relação aos comportamentos proxêmicos durante o acolhimento aos clientes. Isto é: ampliar a escuta, o vínculo, a efetiva convivência interpessoal e favorecer o alcance dos cuidados em saúde integral na hematologia e hemoterapia.
RESUMO
Zika virus (ZIKV) is a mosquito-transmitted Flavivirus, originally identified in Uganda in 1947 and recently associated with a large outbreak in South America. Despite extensive efforts there are currently no approved antiviral compounds for treatment of ZIKV infection. Here we describe the antiviral activity of diarylamines derived from anthranilic acid (FAMs) against ZIKV. A synthetic FAM (E3) demonstrated anti-ZIKV potential by reducing viral replication up to 86%. We analyzed the possible mechanisms of action of FAM E3 by evaluating the intercalation of this compound into the viral dsRNA and its interaction with the RNA polymerase of bacteriophage SP6. However, FAM E3 did not act by these mechanisms. In silico results predicted that FAM E3 might bind to the ZIKV NS3 helicase suggesting that this protein could be one possible target of this compound. To test this, the thermal stability and the ATPase activity of the ZIKV NS3 helicase domain (NS3Hel) were investigated in vitro and we demonstrated that FAM E3 could indeed bind to and stabilize NS3Hel.
Assuntos
Antivirais/farmacologia , Replicação Viral , Zika virus/efeitos dos fármacos , ortoaminobenzoatos/farmacologia , Aminas/química , Animais , Antivirais/síntese química , Sítios de Ligação , Chlorocebus aethiops , Ligação Proteica , Serina Endopeptidases/química , Serina Endopeptidases/metabolismo , Células Vero , Proteínas Virais/química , Proteínas Virais/metabolismo , Zika virus/fisiologia , ortoaminobenzoatos/síntese químicaRESUMO
The Zika fever is an arboviral disease resulting from the infection with Zika virus (ZIKV). The virus is transmitted to humans by the bite of Aedes mosquitos, mainly Aedes aegypti and Aedes albopictus. ZIKV has been detected for decades in African and Asian regions and, since 2007, has spread to other continents; among them, infections are most reported in the Americas. This can be explained by the presence of vectors in highly populated and tropical regions where people are susceptible to contamination. ZIKV has been considered by the World Health Organization a serious public health problem because of the increasing number of cases of congenital malformation and neurological disorders related to its infection, such as microcephaly, Guillainâ»Barré syndrome, meningoencephalitis, and myelitis. There is no vaccine or specific antiviral against ZIKV. The infection is best prevented by avoiding mosquito bite, and the treatment of infected patients is palliative. In this context, the search for efficient antivirals is necessary but remains challenging. Here, we aim to review the molecules that have been described to interfere with ZIKV life cycle and discuss their potential use in ZIKV therapy.
Assuntos
Antivirais/farmacologia , Pesquisa Biomédica/tendências , Infecção por Zika virus/tratamento farmacológico , Zika virus/efeitos dos fármacos , Aedes/virologia , América , Animais , Surtos de Doenças , Humanos , Microcefalia/virologia , Mosquitos Vetores/virologia , Saúde Pública , Saliva/virologiaRESUMO
ABSTRACT Background: We aimed to evaluate the costs of GenoType® MTBDRplus and MTBDRsl incurred during the diagnosis of first- and second-line drug-resistant tuberculosis (TB) in São Paulo, Brazil. Methods: Mean and activity-based costs of GenoType® were calculated in a referral laboratory for TB in Brazil. Results: The mean cost value and activity-based cost of GenoType® MTBDRplus were USD 19.78 and USD 35.80 and those of MTBDRsl were USD 54.25 and USD 41.85, respectively. Conclusions: The cost of GenoType® MTBDRplus was reduced owing to the high number of examinations performed and work optimization.
RESUMO
A esporotricose é uma micose subcutânea causada por fungos do complexo Sporothrix, e no Brasil a principal espécie relatada é Sporothrix brasiliensis da qual o transmissor é o gato doente. Embora sua ocorrência tenha aumentado no estado da Paraíba, Brasil, desde 2016, os dados sobre a doença neste estado são limitados. Diante disso, esta pesquisa teve por objetivo identificar, molecularmente, isolados de Sporothrix spp. procedentes de felinos domésticos de cidades da Paraíba, e dessa maneira expandir a compreensão da enfermidade no estado. Foram analisadas 39 amostras, obtidas de lesões cutâneas de felinos domésticos, oriundos das seguintes cidades paraibanas: João Pessoa, Pilões, Patos, Areia, Bananeiras e Guarabira. Realizou-se análise citológica, para triagem das amostras, a seguir cultura fúngica, e posteriormente a caracterização molecular dos isolados, utilizando a Reação em Cadeia da Polimerase (PCR), espécie-específica ou sequenciamento parcial do gene calmodulina. Todos os isolados foram identificados molecularmente como S. brasiliensis. O sequenciamento demonstrou 100% de similaridade com a cepa S. brasiliensis CBS 120339. Contudo, conclui-se que nas áreas do estudo a espécie envolvida em casos de esporotricose felina é S. brasiliensis, sua presença na Paraíba demonstra a disseminação do agente em regiões distantes dos epicentros no Brasil, alertando para a possível ocorrência de surtos zoonóticos, semelhantes aos encontrados nas regiões Sul e Sudeste do país. Além disso, destaca o papel emergente dos felinos na transmissão da esporotricose em novas áreas endêmicas do Brasil.