Objective To evaluate the expression of reactive oxygen species (ROS), glutataione (GSH), total superoxide dismutase (T-SOD), total antioxidation capacity (T-AOC), thioredoxin reductase (TrxR) under the intervention of hedysarum polysaccharides-1 (HPS-1) in A549 cells. Methods After treated by HPS-1 in different doses (50 mg/L, 100 mg/L, 200 mg/L, respectively), the viability of cell lines was detected by MTT method under microscope. The apoptosis of cell lines was detected by flow cytometry (FCM). The expressions of ROS, GSH, T-SOD, T-AOC, and TrxR in cell supernatant were measured by chemiluminescence method. Results Determined by MTT/FCM/ELISA, the results showed that different doses of HPS-1 could inhibit the proliferation and promote the apoptosis of A549 cells (allP<0.05). The expression levels of GSH, T-SOD, T-AOC, and TrxR were significantly decreased (allP<0.05) and the expression levels of ROS and MDA were significantly increased (allP<0.05) in a concentration-dependent manner in A549 cells treated with HPS-1, and these effects were significantly weakened in A549 cells with time extending (allP<0.05). Conclusion HPS-1 has a markedly effect on inhibiting cellular proliferation and inducing cellular apoptosis of lung adenocarcinoma A549 cells, which may be associated with the change of oxidation/antioxidant.
ObjectiveTo investigate indications,technical points,and outcomes of laparoscopic liver resection in treatment for hepatic hemangioma. MethodThe clinical data of 78 patients with hepatic hemangioma underwent laparoscopic liver resection in our institute from January 2014 to December 2014 were analyzed retrospectively. ResultsSeventy-seven patients were underwent laparoscopic liver resection successfully,1 patient was conversed to open procedure.Operation method:laparoscopic anatomical liver resections were performed in 35 patients including 23 patients with left lateral segmentectomy,4 patients with left hemihepatectomy,3 patients with right hemihepatectomy,1 patient with Ⅲ segmentectomy,1 patient with Ⅵ segmentectomy,2 patients with Ⅵ and Ⅶ segmentectomy,1 patient with left lateral segmentectomy combined with Ⅵ and Ⅶ segmentectomy.Laparoscopic non-anatomical liver resection were performed in 43 patients.The operation time was (163.6 ±62.3) min,the intraoperative blood loss was (273.6±282.4) mL.No operative death occurred.One patient with postoperative functional bowel obstruction and 3 patients with pleural effusion had been recorded.All the patients recovered well.The postoperative hospital stay was (7.2±2.5) d.The results of postoperative pathology confirmed that all the tumors were hepatic cavernous hemangiomas. ConclusionsLaparoscopic liver resection for hepatic cavernous hemangioma is a safe and feasible method with small trauma,rapid recovery,cosmetic incision.Key of this technology is to strictly select surgical indications,to transect liver parenchyma along right plane,effective control of hepatic blood inflow,and properly management of cutting surface of liver.
ObjectiveTo investigate the epidemiological characteristics of the first cluster of patients with coronavirus diseases 2019 (COVID-19) in Gansu.MethodsAll 6 COVID-19 patients from a non-familial cluster in Gansu, were extracted from Gansu Provincial Health Information System until Feb 20, 2020. The patients were confirmed by nucleic acid detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The analyses were included via retrospective method: patient clinical characteristics, the summary of epidemiology, and CT image characteristics.ResultsThis clustered outbreak was the first non-family clustered outbreak in Gansu after traveled to Thailand. All 6 COVID-19 confirmed patients were a kindergarten staff in Gansu, aged from 26 to 51 years, and were female. They traveled to Thailand in the same period, and had the same epidemiological exposure history. They were diagnosed as COVID-19 by transnasopharyngeal swab real-time fluorescent reverse transcription-PCR for SARS-CoV-2 nucleic acid examination at different time points after return to Gansu. The first patient was ill on January 21, 2020, with fever as first symptom. She was diagnosed at the Xigu District People’s Hospital in Lanzhou and was transferred to Lanzhou Pulmonary Hospital after being diagnosed. She was cured with one week’s antiviral treatment. The remaining 5 patients were treated in Longxi People’s Hospital. The common clinical symptoms were fever, throat discomfort, headache, and fatigue. Through 7 to 10 days’ antiviral treatment, they all were cured. All patients belonged to common type and had good prognosis.ConclusionThe COVID-19 patients in a non-familial cluster have the same epidemiological history. Early medical observation, SARS-CoV-2 nucleic acid examination and comprehensive chest CT should be arranged promptly to make diagnosis and give responsive treatment, so that the prognosis is often good.