Isoliquiritigenin suppresses the inflammatory response of vascular endothelial cells via HDAC3 / 西安交通大学学报(医学版)

【Objective】 To investigate the effect of isoliquiritigenin on inflammatory response of vascular endothelial cells and whether the regulatory effect of isoliquiritigenin on inflammation is mediated by histone deacetylase 3 (HDAC3). 【Methods】 Human umbilical vein endothelial cells (HUVECs) were cultured in vitro and treated with LPS, different concentrations of isoliquiritigenin and HDAC3 specific inhibitor, respectively. Real-time PCR and Western blotting were used to detect the mRNA and protein expressions of inflammatory cytokines and HDAC3. Male C57BL/6J mice were randomly divided into vehicle group and isoliquiritigenin treatment group. The vascular inflammation model of C57BL/6J mice was established by ligation of the left carotid arteries. The mRNA expressions of inflammatory cytokines and HDAC3 in the carotid arteries of mice were detected by Real-time PCR. A molecular docking study was performed to investigate the interaction between isoliquiritigenin and HDAC3. 【Results】 Compared with the vehicle group, isoliquiritigenin reduced the mRNA expressions of inflammatory cytokines NLRP3, IL-1β, IL-18, MCP-1 and ICAM-1 and decreased the expression of HDAC3 mRNA and protein in HUVECs stimulated with LPS. In addition, isoliquiritigenin also decreased the mRNA expressions of NLRP3, IL-1β and HDAC3 in carotid arteries of ligated C57BL/6J mice. The docking of isoliquiritigenin in the active site of HDAC3 showed that isoliquiritigenin might act through HDAC3. Furthermore, HDAC3 specific inhibitor RGFP966 further promoted the inhibitory effect of isoliquiritigenin on the expression of inflammatory cytokines in vascular endothelial cells. 【Conclusion】 These results suggest that isoliquiritigenin suppresses the inflammatory response of vascular endothelial cells via HDAC3.

Imaging findings and staging of progressive multifocal leukoencephalopathy in acquired immunodeficiency syndrome patients / 中华放射学杂志

Objective:To investigate the MRI features of progressive multifocal leukoencephalopathy (PML) in acquired immunodeficiency syndrome (AIDS) patients, and to provide evidence for clinical diagnosis, evaluation and staging.Methods:Form Janurary 2016 to April 2018, 11 AIDS patients with clinical diagnosis of PML were enrolled at Zhongnan Hospital of Wuhan University. A total of 25 MRI examination data of 11 patients (5 patients underwent multiple examinations) were reviewed. The distribution, morphology and signal characteristics of the lesions were analyzed, and the changes of the lesions between multiple MRI examinations were compared. The lesions of all 25 MR images were staged according to MR features.Results:Typical image findings of PML included confluent, bilateral but asymmetric distributed, supratentorial white matter abnormal signal lesions. The parietal lobe was most commonly involved, followed by the frontal lobe. The lesions often showed hypointensity on T 1 and hyperintensity on T 2 weighted images. No obvious mass effect or enhancement was found. In advanced stage, multifocal white matter lesions were enlarged in size and more confluent, displaying large patchy abnormal signal intensity, with gradually involving the deep white matter, and occasionally combing with gray matter and cerebellar lesions. The disease showed heterogenous signal intensity due to necrosis in the lesion. The newly appeared lesions showed obvious diffusion restriction, demonstrating high signal intensity on diffusion weighted imaing with low apparent diffusion coefficient value. The main finding of the later stage was necrosis, with focal asymmetric brain atrophy was observed. Conclusions:PML in AIDS patients has characteristic MRI findings, and MRI features varies in different stages. MRI can be helpful in clinical diagnosis, evaluation and staging of PML.

Computed tomographic manifestations of pulmonary aspergillosis after organ transplantation and differential diagnosis with bacterial infection / 中华器官移植杂志

Objective To summarize the computed tomographic (CT) manifestations of pulmonary aspergillosis after organ transplantation and compare different signs between pulmonary aspergillosis and bacterial pneumonia.Methods CT images of pulmonary aspergillosis (n =62) and bacterial pneumonia (n =68) in post-transplantation patients were reviewed.The signs were categorized with consolidation,mass,large nodule (≥1crn),small nodule and bud-in-tree pattern.Some detailed useful differentiating signs such as halo sign,air bronchogram sign,reversed halo sign,hypodensity sign and cavitation were also analyzed.Results CT patterns of pulmonary aspergillosis included consolidation,mass,large nodule,small nodule and bud-in-tree pattern.The most common was large nodule (75.8％),followed by consolidation (48.4％)and mass (29.0％).And small nodule (16.1 ％) and bud-in-tree (12.9％) patterns were concurrent.For consolidation pattern,the proportion of bacterial pneumonia (69.1％) was the larger;For mass pattern,the proportion of pulmonary aspergillosis (29.0％) was the larger.For large nodule pattern,there was no difference.The detail sign of large nodule in two groups had no difference In detailed signs of consolidation pattern,air bronchogram sign was more often seen in bacterial pneumonia while cavitation was more frequently found in pulmonary aspergillosis.In detailed signs of mass pattern,pulmonary aspergillosis often has single lesion (66.7％),cavitation (83.3％)and air crescent sign (77.8％) is more common.The proportion of halo sign was 30.7％.Conclusions CT manifestations of pulmonary aspergillosis are diverse after organ transplantation.There is some difference and yet overlap with bacterial pneumonia.

Imaging evaluation of complications after liver transplantation / 临床肝胆病杂志

Liver transplantation is an effective treatment for end-stage chronic liver diseases and acute liver failure. With the rapid development of surgical techniques, organ preservation technology, and pharmacotherapy, patients' survival rates are improved constantly. However, postoperative complications are still major influencing factors for postoperative incidence and mortality rates. Since clinical and laboratory examinations lack specificity and it is difficult to diagnose various postoperative complications, the application of imaging techniques effectively solves such problems. This article summarizes the imaging findings of common complications after liver transplantation, such as vascular complications, biliary complications, liver parenchyma lesions, and postoperative infection, and points out that imaging examinations have significant advantages and can be used for comprehensive evaluation of disease progression.

Experimental Study of Sanshanxiao Granules on the Levels of Insulin and Lipid Peroxidation in Model Rats of Diabetes / 中国中医药信息杂志

Objective To study pharmacological mechanism of Sanshanxiao granules in treating diabetes. Methods The rat model of diabetes was set up by injecting STZ intraabdominally. The modeled diabetic animals were divided into model group, Sanshanxiao group, and Xiaokewan control group. Normal rats were devised as blank-contrasted group. It was observed through several aspects on the level of blood sugar and insulin, activity changes of SOD in serum, contents of MDA and changes of islets of pancreas morphologic contrastly. Results Sanshanxiao granules can reduce blood sugar, stimulate insulin secreted, develop activity of SOD and decrease the contents of MDA obviously (P

Imaging Diagnosis and Interventional Therapy of Diffuse Type Hepatic Cellular Carcinoma (A Report of 14 Cases ) / 实用放射学杂志

Objective To study the imaging features and adequate interventional therapy of the diffuse type hepatic cellular carcinoma(HCC).Methods Fourteen patients with the diffuse type HCC underwent hepatic angiography and the adequate interventional therapy by TAI or TAE according to imaging appearances,blood supply and function of liver.Results ①Imaging appearances:the most common appearances of fourteen patients with the diffuse type HCC on DSA and CT included:tumor blood vessel was extensive and increased,tumor stain was extensive in left and right liver leaf(such as grain,small spot ,nodule shadows or low density area),liver enlarged obviously with liver cirrhosis,portal vein tumor thrombus,arteriopotal shunt and widespreadly scattered iodized oil,et al.②Therapeutic effect:the mean survival time of fourteen patients was 3 months,the longest survival period was 10 months and the shortest one was olny 15 days.Conclusion ①The specific appearances of the diffuse type HCC are diffuse small spot-like,frosted glass-like,double orbit-like and big liver-like.②The interventional therapeutic effect and prognosis of the diffuse type HCC are the worst than that of other type primary hepatic carcinoma.Selecting adequate interventional therapeutical plan can obviously prolong survival time of the patient.