Rev Invest Clin
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Hepatocarcinogenesis has a variety of risk factors. In Mexico City, autopsies found 14% of hepatocellular carcinomas (HCCs) without cirrhosis. ⋯ There was no evidence of aflatoxin exposure in HCCs, with and without the known "classical" risk factors. One-third of non-cirrhotic HCCs had steatohepatitis or conditions associated to metabolic syndrome.
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As all other aspects in times of the coronavirus disease (COVID)-19 pandemic, carrying-out quality clinical research has been challenging. Many well-established paradigms have shifted as a consequence of the rapid demand for new knowledge. ⋯ However, these challenges should not imply taking shortcuts or accepting deficiencies in bioethical standards, but rather enhance the alertness for rigorous ethical approaches despite these less than ideal circumstances. In this manuscript, we point out some interrogates in COVID-19 research and outline possible strategies to overcome the difficult task to continue with high-quality research without violating the ethical principles.
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Gene expression alterations have been implicated in suicide pathology. However, the study of the regulatory effect of DNA methylation on gene expression in the suicidal brain has been restricted to candidate genes. ⋯ The integration of different omic technologies provided novel candidates for the investigation of genes whose expression is altered in the suicidal brain and their potential regulatory mechanisms.
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The open access (OA) publishing, where a reader- pays economy has been replaced by an author-pays model, began at the end of the 20th century. This movement arose as an attempt to avoid excessive costs and copyright transfer agreements inherent to the subscription model.
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The consequences of the coronavirus disease (COVID)-19 pandemic go beyond the number of cases and deaths attributed to severe acute respiratory syndrome (SARS)-coronavirus-2 infection. The overwhelmed health care systems and the strict social containment measures have had an impact on the threshold at which patients seek medical care for diseases other than COVID-19, including cardiovascular conditions.