Variante da Subunidade Beta 3 da Proteína G ( GNB3 ) Está Associada a Alterações Bioquímicas em Pacientes Brasileiros com Hipertensão / G Protein Subunit Beta 3 (GNB3) Variant Is Associated with Biochemical Changes in Brazilian Patients with Hypertension

Resumo Fundamento Genes e suas variantes associadas a fatores ambientais contribuem para o desenvolvimento do fenótipo hipertenso. O gene da subunidade beta 3 da proteína G ( GNB3 ) está envolvido no processo de sinalização intracelular e suas variantes têm sido relacionadas à suscetibilidade à hipertensão arterial. Objetivo Determinar a associação da variante GNB3 (rs5443:C>T) com a hipertensão arterial, parâmetros bioquímicos, idade e obesidade em indivíduos hipertensos e normotensos de Ouro Preto, Minas Gerais. Método A identificação das variantes foi realizada por PCR em tempo real, utilizando o sistema TaqMan®, em amostras de 310 pacientes (155 hipertensos e 155 normotensos). Análises bioquímicas (função renal, perfil lipídico e glicemia) foram realizadas a partir do soro por meio de espectrofotometria UV/Vis e eletrodo íon-seletivo. Foi utilizado um modelo de regressão logística múltipla para identificar fatores associados à hipertensão arterial. A análise das variáveis contínuas com distribuição normal foi realizada usando o teste t de Student não pareado; dados não normais foram analisados usando o teste de Mann-Whitney. Valores de p < 0,05 foram considerados significativos. Resultados A variante rs5443:C>T não esteve associada à hipertensão arterial na população avaliada (p = 0,88). Em relação às medidas bioquímicas, o alelo T esteve associado a níveis elevados de triglicerídeos, glicose e ácido úrico em indivíduos hipertensos (p < 0,05). Conclusão Os presentes resultados mostram a importância do diagnóstico genético para prevenir as causas e consequências de doenças e sugerem que a variante GNB3 rs5443:C>T pode estar associada a alterações no perfil bioquímico em indivíduos hipertensos.

Abstract Background Genes and their variants associated with environmental factors contribute to the development of the hypertensive phenotype. The G protein beta 3 subunit gene (GNB3) is involved in the intracellular signaling process, and its variants have been related to susceptibility to arterial hypertension. Objective To determine the association of the GNB3 variant (rs5443:C>T) with arterial hypertension, biochemical parameters, age, and obesity in hypertensive and normotensive individuals from Ouro Preto, Minas Gerais, Brazil. Method The identification of variants was performed by real-time PCR, using the TaqMan® system, in 310 samples (155 hypertensive and 155 normotensive). Biochemical analyses (renal function, lipid profile and glycemia) were performed from the serum using UV/Vis spectrophotometry and ion-selective electrode. A multiple logistic regression model was used to identify factors associated with arterial hypertension. The analysis of continuous variables with normal distribution was performed using the unpaired Student's t test; non-normal data were analyzed using Mann-Whitney. P < 0.05 was considered significant. Results The rs5443:C>T variant was not associated with arterial hypertension in the evaluated population (p = 0.88). Regarding biochemical measures, the T allele was associated with high levels of triglycerides, glucose and uric acid in hypertensive individuals (p < 0.05). Conclusion These results show the importance of genetic diagnosis to prevent the causes and consequences of diseases and imply that the GNB3 rs5443:C>T variant may be associated with changes in the biochemical profile in hypertensive individuals.

Prevalence and factors associated with anxiety among university students of health sciences in Brazil: findings and implications / Prevalência e fatores associados à ansiedade entre universitários de ciências da saúde no Brasil: achados e implicações

OBJECTIVE: The aim was to evaluate the prevalence and factors associated with anxiety disorders among university students of health sciences at Federal University of Ouro Preto, Brazil. METHODS: A cross-sectional study between March to June 2019. Data were collected through a self-administered questionnaire including sociodemographic, academic, family and behavioral issues. The Beck Anxiety Inventory was used to assess anxiety. Estimates were obtained through the prevalence ratio and Poisson multivariate analysis. RESULTS: Four hundred and ninety-three students participated with a mean age of 23.1 and predominantly women (79.9%). All students had some degree of anxiety, with the frequency of the severe, moderate and mild forms being 28.0%, 29.8% and 27.0%, respectively. The factors associated with anxiety included having suffered psychological and/or physical violence in childhood, having suicidal thoughts, having a deceased parent, living with parents, being dissatisfied with the course and being in the exam period. CONCLUSIONS: The prevalence of anxiety was high in our study and family problems prior to entering university seem to significantly influence the degree of anxiety, which may compromise the student's academic and social performance.

OBJETIVO: O objetivo foi avaliar a prevalência e os fatores associados aos transtornos de ansiedade em estudantes universitários de ciências da saúde da Universidade Federal de Ouro Preto, Brasil. MÉTODOS: Estudo transversal, entre março e junho de 2019. Os dados foram coletados por meio de questionário autoaplicável, incluindo questões sociodemográficas, acadêmicas, familiares e comportamentais. O Inventário de Ansiedade de Beck foi usado para avaliar a ansiedade. As estimativas foram obtidas por meio da razão de prevalência e análise multivariada de Poisson. RESULTADOS: Participaram 493 alunos com idade média de 23,1 anos e predominância do sexo feminino (79,9%). Todos os alunos apresentaram algum grau de ansiedade, sendo a frequência da forma grave, moderada e leve de 28,0%, 29,8% e 27,0%, respectivamente. Os fatores associados à ansiedade foram: ter sofrido violência psicológica e/ou física na infância, ter pensamentos suicidas, ter pai falecido, morar com os pais, ter insatisfação com o curso e estar em período de provas. CONCLUSÕES: A prevalência de ansiedade foi elevada em nosso estudo e os problemas familiares anteriores ao ingresso na universidade parecem influenciar significativamente no grau de ansiedade, podendo comprometer o desempenho acadêmico e social do discente.

Prevalência, perfil e fatores associados à automedicação em adolescentes e servidores de uma escola pública profissionalizante / Prevalence, profile and factors associated with self-medication in adolescents and employees of a professionalizing public school

Resumo Objetivos Avaliar a prevalência, o perfil e fatores associados à automedicação na população do Instituto Federal Minas Gerais/Ouro Preto, constituída principalmente por adolescentes. Método Trata-se de um estudo transversal, no qual foi aplicado um questionário aos alunos e servidores da Instituição abordando questões sobre nível socioeconômico, características gerais, condição de saúde autorreferida, medicamento utilizado nos últimos 15 dias, uso de medicamento com e sem receita médica e questões relativas à automedicação. A regressão de Poisson foi empregada para avaliar os fatores associados à automedicação. Resultados Foram entrevistadas 270 pessoas, sendo 231 alunos e 39 servidores. A prevalência de automedicação foi de 69,3% (IC95% 63,6-74,6), sendo os analgésicos a principal classe farmacológica utilizada. Os fatores associados à automedicação foram: utilizar medicamento influenciado por propaganda (RP=1,2 IC95%=1,1-1,4); a prática de indicar medicamento (RP=1,4 IC95%=1,1-1,6); estado de saúde autorreferido muito bom/bom (RP=0,8 IC95%=0,6-0,9) e ter realizado a última consulta médica há mais de um mês (RP=1,5 IC95%=1,1-2,1). Conclusão Estes fatores reforçam a importância do acesso a consultas médicas e de ações de conscientização sobre o uso racional de medicamentos.

Abstract Objectives To evaluate the prevalence, profile and factors associated with self-medication in the population of the Federal Institute of Minas Gerais (Instituto Federal de Minas Gerais) - Ouro Preto. Method This is a cross-sectional study, in which a questionnaire was applied to students and staff of the Institution addressing issues such as socioeconomic status, general characteristics, self-reported health condition, medication used in the previous 15 days, use of prescription and over-the-counter medication. Poisson regression was used to evaluate the factors associated with self-medication. Results 270 individuals were interviewed, 231 students and 39 employees. The prevalence of self-medication was 69.3% (95%CI 63.6-74.6), analgesics being the main pharmacological class used. The factors associated with self-medication were: to use medicine influenced by advertising (PR = 1.2; 95%CI = 1.1-1.4); the practice of indicating medication (PR = 1.4; 95%CI = 1.1-1.6); self-reported health status very good/good (PR = 0.8; 95%CI = 0.6-0.9), and having the last medical appointment for more than a month (RP = 1.5; 95%CI= 1.1-2.1). Conclusion These factors reinforce the importance of access to medical consultations and awareness actions of the rational use of medicines.

Seroprevalence and risk factors for human toxoplasmosis in northeastern Brazil

Toxoplasmosis is one of the most prevalent parasitic infections in humans, causing severe clinical complications in immunocompromised patients or in foetuses. Estimates on the toxoplasmosis seroprevalence in human populations vary widely, even within the same region. This study aimed to estimate the prevalence of Toxoplasma gondii infection in the municipality of Santa Cruz, State of Rio Grande do Norte, Brazil, and identify the risk factors for toxoplasmosis. T. gondii IgG antibodies were measured in 66.2% of the studied population. The factors associated with infection were as follows: age above 45 years (OR = 7.4; 95% CI = 3.7-14.8); illiteracy (OR = 2.8; 95% CI = 1.6-5.0); the presence of more than three cats in the home (OR 2.0; 95% CI = 1.2-3.5); no water tank (OR = 2.0; 95% CI = 1.4-3.1); and consumption of raw or unpasteurized milk (OR = 2.0; 95% CI = 1.3-3.0). The risk factors identified were predominantly related to the ingestion of oocysts. This study may contribute to public health knowledge of toxoplasmosis and the definition of control programs, particularly for pregnant women from regions similar to the area studied.

Fatores associados à qualidade de vida em mulheres no climatério / Factors associated with quality of life in climacteric women

Este trabalho foi composto por um estudo transversal, feito em Ouro Preto, Minas Gerais, Brasil, para avaliar os fatores associados à qualidade de vida em mulheres no climatério. Foram usados o questionário de qualidade de vida SF­36 e uma entrevista sobre dados socioeconômicos, demográficos, uso de medicamentos e hábitos de vida. A média de idade das 113 participantes foi de 53,3 ± 4,4 anos. Dessas, 49,6% conviviam com companheiro e 77,4% eram usuárias exclusivas do Sistema Único de Saúde. Foi observado que a renda de 54% delas era menor ou igual a um salário mínimo e 69% tinham baixa escolaridade. Na avaliação da associação entre as variáveis da entrevista e os oito domínios do questionário SF36, observou­se diferença significativa na qualidade de vida em relação a: (i) idade no domínio saúde mental; (ii) viver com ou sem companheiro nos domínios estado geral de saúde e limitação por aspecto emocional; (iii) presença de alguma doença crônica nos domínios estado geral de saúde e saúde mental; (iv) uso de medicamento contínuo no domínio saúde mental. Conclui­se que o aumento da idade, a presença de doenças crônicas e o uso de medicamentos agrava a qualidade de vida dessas mulheres. Entretanto, a convivência com parceiro modifica positivamente alguns domínios associados à qualidade de vida.

A cross­sectional study was conducted in Ouro Preto, Minas Gerais, Brazil to evaluate the factors associated with quality of life in climacteric women. It was used for this evaluation the questionnaire SF­36 of quality of life and one interview about socioeconomic, demographic, medicines used and living habits. The average age of the 113 participant was 53.3±4.4 years, 49.6% living with a partner and 77.4% using the public health system as the exclusive health insurance. It was observed that the income of 54% of them were less than or equal to the minimum wage and 69% had low education. Assessing the association between the variables of the interview and the eight domains of the SF­36, there was significant difference in the quality of life in relation to: (i) age, in the mental health domain; (ii) living with or without a partner, related to general health and limitation by emotional aspect; (iii) the presence of any chronic disease correlated to general health and mental health; (iv) continuous­use medication in the mental health domain. Concluding, the higher the age, in association with chronic diseases and medicines intake, the worse the quality of life of these women. Moreover, living with a partner positively modifies some areas associated with quality of life.

A new index to discriminate between iron deficiency anemia and thalassemia trait

BACKGROUND: The most common microcytic and hypochromic anemias are iron deficiency anemia and thalassemia trait. Several indices to discriminate iron deficiency anemia from thalassemia trait have been proposed as simple diagnostic tools. However, some of the best discriminative indices use parameters in the formulas that are only measured in modern counters and are not always available in small laboratories. The development of an index with good diagnostic accuracy based only on parameters derived from the blood cell count obtained using simple counters would be useful in the clinical routine. Thus, the aim of this study was to develop and validate a discriminative index to differentiate iron deficiency anemia from thalassemia trait. METHODS: To develop and to validate the new formula, blood count data from 106 (thalassemia trait: 23 and iron deficiency: 83) and 185 patients (thalassemia trait: 30 and iron deficiency: 155) were used, respectively. Iron deficiency, ß-thalassemia trait and a-thalassemia trait were confirmed by gold standard tests (low serum ferritin for iron deficiency anemia, HbA2 > 3.5% for ß-thalassemia trait and using molecular biology for the a-thalassemia trait). RESULTS: The sensitivity, specificity, efficiency, Youden's Index, area under receiver operating characteristic curve and Kappa coefficient of the new formula, called the Matos & Carvalho Index were 99.3%, 76.7%, 95.7%, 76.0, 0.95 and 0.83, respectively. CONCLUSION: The performance of this index was excellent with the advantage of being solely dependent on the mean corpuscular hemoglobin concentration and red blood cell count obtained from simple automatic counters and thus may be of great value in underdeveloped and developing countries.