ABSTRACT Health care must respond to individual and family needs, making existing health resources available to meet citizens’ needs. People in a situation of dependence require care from family members who require specific training to perform the role of caregiver. The objective of the study was to analyze how health literacy influences the relationship between satisfaction with social support and informal caregiver burden. A cross-sectional, quantitative and descriptive-correlational study was carried out. Data collection was carried out through a questionnaire. 51 informal caregivers participated, 78.4% were women, 29.4% had a medium/low level of education, 52.9% had assumed the role of informal caregiver for five or more years. It was found that 80.4% of informal caregivers had a high level of overload, with a greater impact on those who had been providing care for around 1-2 years. Regarding the necessary help, 76.5% of informal caregivers mentioned social support for economic support and 49% support for caring for a family member. The need for nurses to implement interventions to improve caregivers’ knowledge, promote health literacy, social support and dynamics that allow informal caregivers to share experiences and achieve a healthy transition process was highlighted.

RESUMO Os cuidados de saúde devem dar resposta às necessidades individuais e familiares, disponibilizando os recursos de saúde existentes para suprir as carências dos cidadãos. As pessoas em situação de dependência requerem cuidados dos familiares, Cuidadores Informais, que necessitam de formação específica para o desempenho do papel de cuidador. O objetivo do estudo foi analisar de que forma a literacia em saúde influência a relação entre a satisfação com o suporte social e a sobrecarga do Cuidador Informal. Realizou-se um estudo transversal, quantitativo e descritivo-correlacional. A recolha de dados foi efetuada através de um questionário. Participaram 51 Cuidadores Informais, 78,4% eram mulheres, 29,4% apresentava nível médio/baixo de escolaridade, 52,9% assumiu o papel de Cuidador Informal há cinco ou mais anos. Verificou-se que 80,4% dos Cuidadores Informais apresentavam nível de sobrecarga elevado, com maior impacto nos que prestavam cuidados há cerca de 1-2 anos. Quanto às ajudas necessárias, 76,5% dos Cuidadores Informais referiram o suporte para apoio económico e 49% suporte para cuidar do familiar. Evidenciou-se necessidade de o enfermeiro implementar intervenções para melhorar os conhecimentos dos cuidadores, promover a literacia em saúde, o suporte social e dinâmicas que permitam ao Cuidador Informal partilhar experiências e alcançar um processo de transição saudável.

ABSTRACT Objective Currently programmed cell death protein 1 (PD-1) inhibitors in combination with other therapies are being evaluated to determine their efficacy in cancer treatment. However, the effect of PD-ligand (L) 1 expression on disease outcomes in stage III (EC III) non-small cell lung cancer is not completely understood. Therefore, this study aimed to assess the influence of PD-L1 expression on the outcomes of EC III non-small cell lung cancer. Methods This study was conducted on patients diagnosed with EC III non-small cell lung cancer who underwent treatment at a tertiary care hospital. PD-L1 expression was determined using immunohistochemical staining, all patients expressed PD-L1. Survival was estimated using the Kaplan-Meier method. Relationships between variables were assessed using Cox proportional regression models. Results A total of 49 patients (median age=69 years) with EC III non-small cell lung cancer and PD-L1 expression were evaluated. More than half of the patients were men, and most were regular smokers. The patients were treated with neoadjuvant chemotherapy, surgery, or sequential or combined chemotherapy and radiotherapy. The median progression-free survival of the entire cohort was 14.2 months, and the median overall survival was 20 months. There was no significant association between PD-L1 expression and disease progression, clinical characteristics, or overall survival. Conclusions PD-L1 expression was not correlated with EC III non-small cell lung cancer outcomes. Whether these findings differ from the association with immune checkpoint inhibitors remains to be addressed in future studies.

Resumo Objetivos investigar a compreensão de enfermeiras assistenciais sobre espiritualidade; analisar o cuidado espiritual prestado pelas enfermeiras à mãe de bebê com malformação, à luz da Teoria de Jean Watson. Método abordagem qualitativa, implementando a entrevista semiestruturada com 11 enfermeiras de uma maternidade de referência no município de João Pessoa (PB). Os dados foram analisados a partir da técnica da análise de conteúdo proposta por Bardin. Resultados emergiram duas categorias: compreensão de enfermeiras sobre espiritualidade e cuidado espiritual; cuidado espiritual prestado pelas enfermeiras às mães de bebês com malformação congênita, na perspectiva da Teoria de Jean Watson. As profissionais utilizam, empiricamente, elementos do Processo Clinical Caritas-Veritas. Conclusão e implicações para a prática as enfermeiras compreendem espiritualidade como algo que norteia e dá sentido à vida, podendo ou não estar relacionada a uma prática religiosa. Reconhecem que o cuidado espiritual auxilia as mães no enfrentamento de problemas.

Abstract Objectives to investigate the understanding of nursing assistants on spirituality; to analyze the spiritual care provided by nurses to the mother of a baby with a malformation in the light of Watson’s Theory. Method this was a qualitative approach implementing semi-structured interviews with eleven nurses from a reference maternity hospital in the city of João Pessoa (Paraíba State, northeastern Brazil). Data were analyzed using the content analysis technique proposed by Bardin. Results two categories emerged: the nurses’ understanding of spirituality and spiritual care and the spiritual care provided by the nurses to the mothers of malformed babies from the perspective of Watson’s theory. The professionals empirically use elements of the Caritas-Veritas Clinical Process. Conclusion and implications for the practice the nurses understand spirituality as something that guides and brings meaning to life, whether or not it is linked to religious practice. They recognize that the spiritual care provided to the mothers of malformed babies helps them cope with the problem.

Resumen Objetivos Investigar la comprensión de enfermeros asistenciales sobre espiritualidad; analizar el cuidado espiritual que prestan las enfermeras a la madre de un bebé con malformación, a la luz de la Teoría de Jean Watson. Método abordaje cualitativo implementando una entrevista semiestructurada con once enfermeras de una maternidad de referencia en la ciudad de João Pessoa (Estado de Paraíba, noreste de Brasil). Los datos se analizaron mediante la técnica de análisis de contenido propuesta por Bardin. Resultados asomaron dos categorías: comprensión del enfermero sobre espiritualidad y cuidado espiritual y el cuidado espiritual ofrecido por los enfermeros a las madres de bebés malformados en la perspectiva de la teoría de Jean Watson. Los profesionales utilizan empíricamente elementos del Proceso Clínico Caritas-Veritas. Conclusión e implicaciones para la práctica Los enfermeros comprenden espiritualidad como algo que orienta y ofrece sentido a la vida, pudiendo o no estar ligada a una práctica religiosa. Reconocen que el cuidado espiritual ofrecido a las madres de bebés malformados las auxilia en el enfrentamiento del problema.

RESUMO Objetivo: analisar os resultados dos procedimentos de inserção de Cateter Central de Inserção Periférica em recém-nascidos utilizando dois métodos de mensuração. Métodos: ensaio clínico randomizado, apresentando os resultados descritivos e exploratórios das variáveis. Realizado em Unidade de Terapia Intensiva Neonatal. Dados foram coletados entre setembro de 2018 e 2019. A amostra analisada foi de 88 procedimentos de inserção do cateter, distribuídos em dois grupos. Estudo aprovado no Comitê de Ética. Obteve-se registro no país e exterior. Análise descritiva e regressão logística dos dados. Resultados: o método de medida modificada obteve diferença significativa para a localização central da ponta do cateter. Retiradas eletivas e eventos adversos não foram significativos entre os grupos, porém o mau posicionamento foi relacionado com os eventos adversos. Conclusões: entre os dois métodos analisados, a medida modificada obteve melhores resultados no posicionamento adequado da ponta do cateter e, consequentemente, menores riscos aos pacientes.

ABSTRACT Objective: to analyze the results of insertion procedures of Peripherally Inserted Central Catheters in newborns using two measurement methods. Methods: this is a randomized clinical trial, presenting descriptive and exploratory results of variables. It was held at a Neonatal Intensive Care Unit. Data were collected between September 2018 and 2019. The sample analyzed was 88 catheter insertion procedures, distributed in two groups. Study approved by an Institutional Review Board and obtained registration in the country and abroad. Descriptive analysis and logistic regression of data. Results: modified measurement obtained a significant difference for the central catheter tip location. Elective removals and adverse events were not significant between groups; however, poor positioning was related to adverse events. Conclusions: between the two methods analyzed, the modified measurement obtained better results in the proper catheter tip positioning and, consequently, less risk to patients.

RESUMEN Objetivo: analizar los resultados de los procedimientos de inserción del catéter central de inserción periférica en recién nacidos mediante dos métodos de medición. Métodos: ensayo clínico aleatorizado, presentando los resultados descriptivos y exploratorios de las variables. Realizado en la Unidad de Cuidados Intensivos Neonatales. Los datos fueron recolectados entre septiembre de 2018 y 2019. La muestra analizada fueron 88 procedimientos de inserción de catéter, divididos en dos grupos. Estudio aprobado por el Comité de Ética. Se obtuvo el registro en el país y en el exterior. Análisis descriptivo y regresión logística de los datos. Resultados: el método de medición modificado obtuvo una diferencia significativa para la ubicación central de la punta del catéter. Los retiros electivos y los eventos adversos no fueron significativos entre los grupos; sin embargo, la mala posición se relacionó con los eventos adversos. Conclusiones: entre los dos métodos analizados, la medida modificada obtuvo mejores resultados en el correcto posicionamiento de la punta del catéter y, en consecuencia, menor riesgo para los pacientes.

Abstract Background: the biological activity of vitamin D depends on the activity of its receptor or VDR. On the other hand, the activity of this receptor is influenced by its state of methylation. The objective of this study was to verify if the BsmI polymorphism of the VDR gene influences its methylation profile in adolescents. Secondly, it was to verify if the status of some metabolic factors (oxidative stress, inflammation, lipid profile, and glycemia) in the serum, and gender-adjusted vitamin D levels are independent factors with an influence on the VDR methylation profile. Methods and results: the study included 198 adolescents of both sexes, aged 15-19 years, who underwent testing for VDR gene methylation polymorphisms, serum vitamin D levels, and metabolic, oxidative stress, and systemic inflammation markers. It was observed that the BB genotype was less methylated than the other groups (26.1 % versus 30.3 %, and 29.3 % for Bb and bb, respectively), although without statistical differences between them. The odds ratio indicated a protection of 13 % (partially methylated) for vitamin D status, while alpha glycols increased the risk ratio (of being partially methylated) by 3 %. MDA was protective at a 28 % chance of risk that adolescents with higher levels of lipid peroxidation would be hypomethylated. Conclusion: we conclude that the methylation profile of the VDR gene is not influenced by the different BsmI polymorphism genotypes, and that serum vitamin D and serum markers of oxidative stress and inflammation can modulate this profile.

Resumen Antecedentes: la actividad biológica de la vitamina D depende de la actividad de su receptor, el VDR. Por otro lado, la actividad de este receptor está influenciada por su estado de metilación. El objetivo de este estudio es verificar si el polimorfismo BsmI del gen VDR influye en el perfil de metilación del mismo en los adolescentes. En segundo lugar, verificar si los factores metabólicos (estrés oxidativo, inflamación, perfil lipídico y glucemia) del suero y la vitamina D ajustada por sexo actúan independientemente de los polimorfismos sobre el perfil de metilación del VDR. Métodos y resultados: el estudio incluyó a 198 adolescentes de ambos sexos, de 15 a 19 años de edad, que se sometieron a análisis de polimorfismos de metilación del gen VDR, niveles de vitamina D, marcadores metabólicos, estrés oxidativo e inflamación sistémica. Se observó que el genotipo BB estaba menos metilado que los otros grupos (26,1 % contra 30,3 % y 29,3 % para Bb y bb respectivamente), aunque sin diferencias estadísticas entre ellos. El odds ratio indicó una protección del 13 % (parcialmente metilado) para el estado de la vitamina D, mientras que los alfa glicoles aumentaron el índice de riesgo (de estar parcialmente metilado) en un 3 %. La MDA fue protectora con un 28 % de probabilidad de riesgo de que los adolescentes con niveles más altos de peroxidación lipídica fueran hipometilados. Conclusión: concluimos que el perfil de metilación del gen VDR no está influenciado por los diferentes genotipos del polimorfismo BsmI y que la vitamina D y los marcadores de estrés oxidativo e inflamación en el suero pueden modular este perfil.

Evidence shows that metabolic syndrome (MS) is associated with a greater risk of developing Parkinson's disease (PD) because of the increase in oxidative stress levels along with other factors such as neuroinflammation and mitochondrial dysfunction. However, because some studies have reported that MS is associated with a lower risk of PD, the relationship between MS and PD should be investigated. This study aimed to investigate the effect of MS on PD. Two authors searched five electronic databases, namely, MEDLINE, PubMed, Scopus, PsycINFO, Web of Science, and Science Direct, for relevant articles between September and October 2020. After screening the title and abstract of all articles, 34 articles were selected for full-text review. Finally, 11 articles meeting the eligibility criteria were included in the study. The quality of articles was critically evaluated using the Joanna Briggs Institute. Overall, we evaluated data from 23,586,349 individuals (including healthy individuals, with MS and PD) aged 30 years or more. In cohort studies, the follow-up period varied between 2 and 30 years. MS contributed considerably to the increase in the incidence of PD. In addition, obesity, a component of MS, alone can increase the probability of developing neurodegenerative diseases. However, despite few studies on MS and PD, changes in cognitive function and more rapid progression of PD disease has been documented in patients with MS using methods commonly used in research.

Vitamin D is a fat-soluble vitamin that plays a role not only in calcium homeostasis, but also in several other functions, including cell growth and immune functions, and is considered a neurosteroid. Vitamin D deficiency is highly prevalent worldwide and has been suggested to be associated with an increased risk of emotional disorders. Therefore, the association between vitamin D levels and psychophysiological disorders, such as depression, anxiety, and mood, has been investigated. To list these variables, a bibliographical literature research was conducted in the MEDLINE/PubMed, Web of Science, Scopus, Science Direct and PsycINFO databases, between November and December 2020, with no year limits of publication. The studies involved humans aged between 18 and 59 years without associated diseases. This review presents evidence of the main variables involved in this association, main tools used to verify these variables, and methods used to verify circulating vitamin D levels in populations. Most studies have indicated that the main psychophysiological variables involved with vitamin D levels are depression and anxiety followed by mood, and an association has been observed between increased serum vitamin D levels and reduction in symptoms of depression, anxiety, and mood, and there is a heterogeneity of methods for assessing vitamin D. More studies are clearly needed to improve our understanding of their role in modulating the psychophysiological aspects of vitamin D levels.

RESUMO Racional: Doenças inflamatórias intestinais − Doença de Crohn (DC) e Retocolite Ulcerativa (RCU) − são desordens crônicas associadas, por diversos fatores, a sintomas psicológicos e estigmatização dos portadores. Objetivo: Comparar indivíduos portadores e não portadores de doenças inflamatórias intestinais em relação à prevalência de ansiedade e depressão. Método: O aspecto psicológico foi analisado através de dois questionários mundialmente validados − o Questionário sobre Saúde do Paciente (PHQ-9) e o questionário de Transtorno Geral de Ansiedade (GAD-7) – além de um questionário sociodemográfico. A coleta foi realizada em três grupos, cada um composto por 100 indivíduos, sendo o primeiro composto por pacientes ambulatoriais com diagnóstico de doenças inflamatórias intestinais, o segundo por pacientes ambulatoriais sem diagnóstico de doenças inflamatórias intestinais e o terceiro por indivíduos não ambulatoriais sem diagnóstico de doenças inflamatórias intestinais. Resultados: Os grupos foram semelhantes quanto a gênero, etnia, estado civil e uso de tabaco. Quanto à classe social, o grupo doenças inflamatórias intestinais apresentou predominância de classe E (46%), o grupo Controle Ambulatorial predominância de classe D (44%) e o grupo Controle Parque de classe C (44%) (p < 0,001). O grupo controle parque teve também maior número de indivíduos jovens (média = 36,69 anos) (p < 0,001). Observou-se maior número de indivíduos com depressão e ansiedade nos grupos doenças inflamatórias intestinais e Controle ambulatorial em comparação ao grupo Controle parque (p < 0,001), mas sem diferença entre os primeiros. Houve maior número de indivíduos com ansiedade grau severo no grupo DII (36%) em comparação ao grupo Controle parque (8%) (p < 0,001). Conclusão: No grupo portador de doenças inflamatórias intestinais foi observada maior severidade e prevalência de ansiedade e depressão.

ABSTRACT Rationale: Inflammatory bowel diseases − Crohn's Disease (CD) and Ulcerative Colitis (UC) − are chronic disorders associated, for several reasons, with psychological symptoms and stigmatization of patients. Aim: To compare individuals with and without inflammatory bowel diseases in relation to the prevalence of anxiety and depression. Method: The psychological aspect was analyzed using two globally validated questionnaires − the Patient Health Questionnaire (PHQ-9) and the General Anxiety Disorder questionnaire (GAD-7) − in addition to a sociodemographic questionnaire. Data collection was carried out in three groups, each one consisting of 100 individuals; the first comprising outpatients with a diagnosis of inflammatory bowel diseases, the second comprising outpatients without a diagnosis of inflammatory bowel diseases and the third by non-outpatients without a diagnosis of inflammatory bowel diseases. Results: The groups were similar regarding gender, ethnicity, marital status and tobacco use. As for social class, the IBD group showed a predominance of class E (46%), the outpatient group a predominance of class D (44%) and the non-outpatient group, class C (44%) (p < 0.001). The non-outpatient group also had a higher number of young individuals (mean = 36.69 years) (p < 0.001). There was a higher number of individuals with depression and anxiety in the IBD and outpatient control groups when compared to the non-outpatients’ group (p < 0.001), but with no difference between the two first groups. There was a higher number of individuals with severe degree anxiety in the IBD group (36%) compared to the non-outpatients’ group (8%) (p < 0.001). Conclusion: Greater severity and a prevalence of anxiety and depression were observed in the group with inflammatory bowel diseases.

The current pandemic of COVID-19 - Coronavirus Disease-19, caused by the pathogen SARS-Cov-2, responsible for thousands of deaths in 2020, has mobilized the scientific community, who aim to understand the different aspects of the disease and propose new treatments and prevention modalities. Research in several areas is evaluating the extent of infection and kidney disorders related to the virus. The aim of this study is to describe the effects of COVID-19 on the renal system. Final considerations point to the main complications of the effects of infection and renal disorders caused by COVID-19, such as acute kidney injury and a consequent increase in the disease’s poor prognosis.

Resumo Senna rugosa (Fabaceae) é uma espécie comum do território brasileiro, especialmente no Cerrado. É amplamente utilizado na medicina popular, embora ainda não tenha sido investigada quanto aos seus fitoconstituintes e atividades farmacológicas. Neste estudo, foram realizadas as análises fitoquímicas preliminares do extrato etanólico de folhas de S. rugosa e sua citotoxicidade, atividade antitumoral e antimicrobiana (antibacteriana, antifúngica, anti-Trypanosoma e anti-Leishmania). O extrato bruto foi analisado em HPLC-DAD e as frações foram caracterizadas usando técnicas de GC-MS e ESI-MS. Os resultados indicam a presença majoritária de compostos fenólicos, incluindo flavonóis, antraquinonas e derivados de antronas. Atividades antimicrobianas foram detectadas contra as espécies Staphylococcus aureus, Pseudomonas aeruginosa, Candida famata, Candida krusei e Candida tropicalis. Além disso, uma fraca atividade anti-tripanossomatídeos contra as cepas M2269 e BH46 de Leishmania sp. Uma atividade antitumoral foi identificada, porém também foi observada uma toxicidade sobre células de fibroblastos (L929). Fitoquimicamente, os resultados fornecem evidências de que compostos fenólicos nas folhas de S. rugosa podem ser os responsáveis pela sua atividade antimicrobiana e pela toxicidade celular observada em nosso estudo.

Abstract Senna rugosa (Fabaceae) is a common specie of the Brazilian territory, especially in the Cerrado biome. It is widely used in the popular medicine although not yet adequately investigated as to its phytoconstituents and pharmacological activities. In this study, the preliminary phytochemical analysis of ethanolic leaf extract of S. rugosa was performed and its cytotoxicity, antitumoral and antimicrobial activities (antibacterial, antifungal, anti-Trypanosoma and anti-Leishmania) were evaluated. The crude extract was analyzed in HPLC-DAD and fractions were also characterized using GC-MS and ESI-MS techniques. Results indicate phenolic compounds majority presence, including flavonol, anthraquinone and anthrones derivatives. Relative antimicrobial activities were detected against Staphylococcus aureus, Pseudomonas aeruginosa, Candida famata, Candida krusei and Candida tropicalis. As well as, a weak anti-trypanosomatids activity against M2269 strain and BH46 strain of Leishmania sp. A relative antitumoral activity was also identified but in counterpoint were also observed a toxicity in fibroblast cells (L929). Phytochemically, results provide evidence that phenolic compounds in S. rugosa leaves might be the responsible for its antimicrobial activity and cell toxicity inferred in our research.

Abstract INTRODUCTION: Herein, we aimed to identify the factors associated with adverse drug events (ADEs) in chronic Chagas disease (CD) patients. METHODS: We analyzed 320 medical notes from 295 patients. The Naranjo algorithm was applied to determine the cause of ADEs. Mixed effects logistic regression was performed to evaluate the factors associated with ADEs. RESULTS: ADEs were described in 102 medical notes (31.9%). Captopril was most frequently associated with ADEs. Age (RR 0.96; 95%CI 0.94-0.99) and cardiac C/D stages (RR 3.24; 95%CI 1.30-4.58) were the most important clinical factors associated with ADEs. CONCLUSIONS: Close follow-up is warranted for CD patients.

Resumo O objetivo do presente estudo foi verificar se os padrões psicométricos da Escala de percepção, por professores, dos comportamentos agressivos de crianças na escola (EPPCACE) evidenciavam sua validade interna. No Estudo 1 (n = 210), foi realizada a adaptação do instrumento e executada uma análise fatorial exploratória. No Estudo 2 (n = 203), efetuou-se uma análise fatorial confirmatória. Participaram professores do ensino fundamental de escolas públicas e particulares. Esses responderam à EPPCACE e a perguntas sociodemográficas. Os resultados indicaram que o instrumento é composto por três fatores: Agressividade direcionada ao âmbito geral (α = 0,95), Comportamentos pró-sociais (α = 0,90) e Agressividade direcionada aos professores (α = 0,90). Conclui-se que a EPPCACE é válida e fidedigna, podendo auxiliar na avaliação do contexto escolar a partir da percepção do professor acerca do comportamento agressivo dos alunos.

Abstract The objective of this study was to verify whether the psychometric patterns of the Scale of teachers’ perception of aggressive behavior of children in school (EPPCACE) showed evidence of its internal validity. In Study 1 (n = 210) the instrument was adapted and an exploratory factorial analysis was performed. In Study 2 (n = 203) a confirmatory factorial analysis was performed. Elementary school teachers in public and private schools participated and answered the EPPCACE and sociodemographic questions. Results indicated that the instrument is composed of three factors: Aggressiveness directed to the general scope (α = 0.95), Pro-social behaviors (α = 0.90), and Aggressiveness directed to teachers (α = 0.90). We concluded that the EPPCACE is valid and reliable, and it can help in the evaluation of the school context from the teacher’s perception of the aggressive behavior of the students.

Resumen El objetivo del presente estudio fue comprobar si los patrones psicométricos de la Escala de percepción de los maestros sobre el comportamiento agresivo de los niños en la escuela (EPPCACE) evidencian su validez interna. En el estudio 1 (n = 210) se realizó la adaptación del instrumento y se ejecutó un análisis factorial exploratorio. En el estudio 2 (n = 203) se efectuó un análisis factorial confirmatorio. Participaron maestros de Enseñanza Primaria de escuelas públicas y privadas. Estos respondieron a la EPPCACE y preguntas sociodemográficas. Los resultados indicaron que el instrumento está compuesto por tres factores: agresividad dirigida al ámbito general (α = 0,95), comportamientos pro-sociales (α = 0,90) y agresividad dirigida a los maestros (α = 0,90). Se concluye que la EPPCACE es válida y fidedigna, pudiendo auxiliar en la evaluación del contexto escolar a partir de la percepción del maestro sobre el comportamiento agresivo de los alumnos.

Abstract Background: There is still a need for new alternatives in pharmacological therapy for neglected diseases, as the drugs available show high toxicity and parenteral administration. That is the case for the treatment of leishmaniasis, particularly to the cutaneous clinical form of the disease. In this study, we present the synthesis and biological screening of eight 4-phenyl-1,3-thiazol-2-amines assayed against Leishmania amazonensis. Herein we propose that these compounds are good starting points for the search of new antileishmanial drugs by demonstrating some of the structural aspects which could interfere with the observed activity, as well as suggesting potential macromolecular targets. Methods: The compounds were easily synthesized by the methodology of Hantzsch and Weber, had their purities determined by Gas Chromatography-Mass spectrometry and assayed against the promastigote forms of Leishmania amazonensis as well as against two white cell lines (L929 and THP-1) and the monkey's kidney Vero cells. PrestoBlue® and MTT viability assays were the methodologies applied to measure the antileishmanial and cytotoxic activities, respectively. A molecular modeling target fishing study was performed aiming to propose potential macromolecular targets which could explain the observed biological behavior. Results: Four out of the eight compounds tested exhibited important anti-promastigote activity associated with good selectivity indexes when considering Vero cells. For the most promising compound, compound 6, IC50 against promastigotes was 20.78 while SI was 5.69. Compounds 3 (IC50: 46.63 μM; SI: 26.11) and 4 (IC50: 53.12 μM; SI: 4.80) also presented important biological behavior. A target fishing study suggested that S-methyl-5-thioadenosine phosphorylase is a potential target to these compounds, which could be explored to enhance activity and decrease the potential toxic side effects. Conclusions: This study shows that 4-phenyl-1,3-thiazol-2-amines could be good scaffolds to the development of new antileishmanial agents. The S-methyl-5-thioadenosine phosphorylase could be one of the macromolecular targets involved in the action.