Diminuição dos Níveis Séricos do Receptor Solúvel da Oncostatina M (sOSMR) e Glicoproteína 130 (sgp130) em Pacientes com Doença Arterial Coronariana / Decreased Serum Levels of Soluble Oncostatin M Receptor (sOSMR) and Glycoprotein 130 (sgp130) in Patients with Coronary Artery Disease

Resumo Fundamento A oncostatina M (OSM) é uma citocina pleiotrópica que, após lesão arterial, demonstra ser expressa rapidamente. Objetivos Correlacionar os níveis séricos da OSM, do receptor solúvel de oncostatina M (sOSMR) e da fração solúvel de glicoproteína 130 (sgp130) em pacientes com doença arterial coronariana (DAC) a parâmetros clínicos. Métodos Os níveis de sOSMR e sgp130 foram avaliados por ELISA, enquanto os de OSM foram avaliados por Western Blot, em pacientes com SCC (n=100), pacientes com SCA (n=70) e 64 voluntários do grupo de controle sem manifestações clínicas da doença. Valores de p <0,05 foram considerados estatisticamente significativos. Resultados Pacientes com DAC exibiram níveis significativamente mais baixos de sOSMR e sgp130 e níveis mais altos de OSM em comparação ao grupo de controle (ambos p <0,0001). A análise clínica mostrou níveis mais baixos de sOSMR em homens ([OR] = 2,05, p = 0,026), jovens (OR = 1,68, p = 0,0272), hipertensos (OR = 2,19, p = 0,041), fumantes (OR = 2,19, p = 0,017), pacientes que não apresentavam dislipidemia (OR = 2,32, p = 0,013), pacientes com infarto agudo do miocárdio [IAM] (OR = 3,01, p = 0,001) e pacientes não tratados com estatina (OR = 1,95, p = 0,031), antiplaquetário (OR = 2,46, p = 0,005), inibidores dos canais de cálcio (OR = 3,15, p = 0,028) e antidiabéticos (OR = 2,97, p = 0,005). Os níveis de sOSMR também foram correlacionados a sexo, idade, hipertensão e uso de medicamentos na análise multivariada. Conclusões Nossos dados sugerem que o aumento dos níveis séricos de OSM e a diminuição dos níveis de sOSMR e sGP130 em pacientes com injúria cardíaca podem desempenhar um papel importante no mecanismo fisiopatológico da doença. Além disso, níveis mais baixos de sOSMR foram associados a sexo, idade, hipertensão e uso de medicamentos.

Abstract Background Oncostatin M (OSM) is a pleiotropic cytokine which, after arterial injury, has proven to be to be rapidly expressed. Objectives To correlate the serum levels of OSM, soluble OSM receptor (sOSMR), and soluble fraction of glycoprotein 130 (sgp130) in patients with coronary artery disease (CAD) with clinical parameters. Methods Levels of sOSMR and sgp130 were evaluated by ELISA and OSM by Western Blot, in patients with CCS (n=100), patients with ACS (n=70), and 64 control volunteers without clinical manifestations of the disease. P-values < 0.05 were considered to be statistically significant. Results CAD patients exhibited significantly lower levels of sOSMR and sgp130 and higher levels of OSM when compared to the controls (both p < 0.0001). Clinical analysis displayed, lower levels of sOSMR in men ([OR] = 2.05, p = 0.026), youth (OR = 1.68, p = 0.0272), hypertensives (OR = 2.19, p = 0.041), smokers (OR = 2.19, p = 0.017), patients that did not present dyslipidemia (OR = 2.32, p = 0.013), patients with Acute Myocardial Infarction [AMI] (OR = 3.01, p = 0.001) and patients not treated with statin (OR = 1.95, p = 0.031), antiplatelet agent (OR = 2.46, p = 0.005), inhibitors of calcium channels (OR = 3.15, p = 0.028), and antidiabetic drugs (OR = 2.97, p = 0.005). The levels of sOSMR were also correlated with gender, age, hypertension, and use of medications in multivariate analysis. Conclusions Our data suggest that the enhanced serum levels of OSM, and decreased levels of sOSMR and sGP130 in patients with cardiac injury may play an important role in the pathophysiological mechanism of the disease. Furthermore, lower levels of sOSMR were associated with gender, age, hypertension, and the use of medications.

Enhanced rapid commercial DNA extraction kit for the molecular detection of severe acute respiratory syndrome coronavirus 2: Easy adaptation to current protocols

Abstract INTRODUCTION Herein, the authors describe a simple enhancement to a commercial rapid DNA extraction kit based on simple viral lysis for detecting COVID-19 via RT-qPCR. METHODS After testing several different modifications, the adapted protocol with the best results in preliminary experiments was statistically evaluated in comparison with an automated robotic protocol. RESULTS Processing and testing of 119 nasopharyngeal samples ultimately yielded near-perfect agreement with the automated protocol (κ = 0.981 [95% confidence interval 0.943-1.000]). CONCLUSIONS The low cost and rapidity of the enhanced protocol makes it suitable for adoption in laboratories diagnosing COVID-19, especially those with high demand for examinations.