Resumen Una paciente de 48 años con quejas de disnea y tos tenía infiltración difusa bilateral en la radiografía de tórax y opacidades difusas en vidrio deslustrado en la tomografía computarizada de tórax. A pesar de que su prueba de PCR fue negativa, fue tratada durante 10 días por neumonía COVID-19 debido a sus imágenes radiológicas e hipoxia clínica. Como no hubo mejoría en sus síntomas, se le administró fibrobroncoscopia y se le diagnosticó proteinosis alveolar pulmonar. La proteinosis alveolar pulmonar se puede confundir con la neumonía COVID-19 debido a su apariencia clínica y radiológica similar.

Abstract A 48-year-old female patient with complaints of shortness of breath and coughing had bilateral diffuse infiltration in her chest X-ray and diffuse ground-glass opacities in her chest computed tomography. Despite her polymerase chain reaction test being negative, she was treated 10 days for coronavirus disease 2019 (COVID-19) pneumonia due to her radiological images and clinical hypoxia. As there was no improvement in her symptoms, she was administered fiberoptic bronchoscopy and she was diagnosed with pulmonary alveolar proteinosis (PAP). PAP can be confused with COVID-19 pneumonia due to their similar clinical and radiological appearances.

OBJECTIVES: To evaluate the effects of Urtica dioica on hepatic ischemia-reperfusion injury. METHODS: Thirty adult male Wistar albino rats were divided into three groups: sham group (group 1), control group (group 2), and Urtica dioica group (group 3). All the rats were exposed to hepatic ischemia for 60 min, followed by 60 min of reperfusion. In group 2, a total of 2 ml/kg 0.9% saline solution was given intraperitoneally. In group 3, a total of 2 ml/kg Urtica dioica was given intraperitoneally. At the end of the procedure, liver tissue and blood samples were taken from all rats. Serum aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase, ceruloplasmin, catalase, paraoxonase, arylesterase, and lipid hydroperoxide levels were measured. Liver tissue histopathologies were also evaluated by light microscopy. RESULTS: Serum aspartate aminotransferase, alanine aminotransferase and lactate dehydrogenase levels were significantly higher in group 2 than in group 1, and significantly lower in group 3 than in group 2. Also, group 2 had higher serum lipid hydroperoxides and ceruloplasmin levels but lower catalase, paraoxonase, and arylesterase levels than group 1. In group 3, serum lipid hydroperoxides and ceruloplasmin levels were significantly lower, and catalase, paraoxonase, and arylesterase levels were higher than those in group 2. Histopathological examination showed that liver tissue damage was significantly decreased in group 3 compared with group 2. CONCLUSIONS: Urtica dioica has a protective effect on the liver in hepatic ischemia-reperfusion-injured rats.