Mechanism of Erzhiwan on Hepatocellular Carcinoma Based on Network Pharmacology / 中国实验方剂学杂志

Objective::To explore the possible mechanisms of Erzhiwan in the treatment of hepatocellular carcinoma (HCC) based on the network pharmacology. Method::The candidate active components and targets of Ligustri Lucidi Fructus and Ecliptae Herba were obtained through retrieval of the traditional Chinese medicine (TCM) systems pharmacology database (TCMSP) and literatures. Through Uniprot database and the human genome database (GeneCards), the overlapping genes of Erzhiwan and hepatocellular carcinoma were collected. The " candidate active components-targets" network of Ligustri Lucidi Fructus and Ecliptae Herba was built with Cytoscape 3.6.0 software. Drug target proteins and disease targets were mapped, and Venn map was drawn by Omicshare database. Major targets interaction network was formed by using String database and " Generate style from statistics" tool in Cytoscape 3.6.0 software. Molecular docking with active components was carried out by Systems Dock Web Site. The Gene Ontology (GO) classification enrichment analysis and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis for the targets were carried out in DAVID database. Result::Totally 21 active components, including beta-sitosterol, quercetin, luteolin, demethylwedelolactone, kaempferol, and 151 targets, including tumor necrosis factor (TNF), vascular endothelial growth factor (VEGF), N-terminal kinase (JUN), proto-oncogene (c-MYC), matrix metalloproteinase-9 (MMP-9) of Erzhiwan were collected. Erzhiwan exerts its effects on HCC mainly by acting on signal pathways, including Hepatitis B, TNF, Phosphatidylinositol-3-kinase (PI3K/Akt), tumor suppressor gene p53 and Toll-like receptor. Conclusion::Based on the methodology of network pharmacology, this study preliminarily predicted the major targets and pathways of Erzhiwan in the treatment of HCC, providing a direction for further studies.

Role of DOR-β-arrestin1-Bcl2 signal transduction pathway and intervention effects of oxymatrine in ulcerative colitis / 华中科技大学学报（医学）（英德文版）

This study was aimed to investigate the role of the delta-opioid receptor (DOR)-β-arrestin1-Bcl-2 signal transduction pathway in the pathogenesis of ulcerative colitis (UC) and the intervention effects of oxymatrine on UC. Forty Sprague-Dawley rats were divided into normal group, model group, oxymatrine-treated group and mesalazine-treated group (n=10 each) at random. The rat UC model was established by intra-colonic injection of trinitrobenzene sulfonic acid in the model group and two treatment groups. The rats in oxymatrine-treated group were subjected to intramuscular injection of oxymatrine [63 mg/(kg·day)] for 15 days, and those in mesalazine-treated group given mesalazine solution [0.5 g/(kg·day)] by gastric lavage for the same days. Animals in normal group and model group were administered 3 mL water by gastric lavage for 15 days. On the 16th day, after fasting for 24 h, the rats were sacrificed for the removal of colon tissues. The expression levels of DOR, β-arrestin1 and Bcl-2 were determined in colon tissues by immunohistochemistry and real-time quantitative polymerase chain reaction (RT-PCR), respectively. It was found that the expression levels of DOR, β-arrestin1 and Bcl-2 protein and mRNA were significantly increased in the model group as compared with the other groups (P0.05). This study indicated that the DOR-β-arrestin1-Bcl-2 signal transduction pathway may participate in the pathogenesis of UC. Moreover, oxymatrine can attenuate the development of UC by regulating the DOR-β-arrestin1-Bcl-2 signal transduction pathway.

Role of DOR-β-arrestin1-Bcl2 signal transduction pathway and intervention effects of oxymatrine in ulcerative colitis / 华中科技大学学报（医学）（英德文版）

This study was aimed to investigate the role of the delta-opioid receptor (DOR)-β-arrestin1-Bcl-2 signal transduction pathway in the pathogenesis of ulcerative colitis (UC) and the intervention effects of oxymatrine on UC. Forty Sprague-Dawley rats were divided into normal group, model group, oxymatrine-treated group and mesalazine-treated group (n=10 each) at random. The rat UC model was established by intra-colonic injection of trinitrobenzene sulfonic acid in the model group and two treatment groups. The rats in oxymatrine-treated group were subjected to intramuscular injection of oxymatrine [63 mg/(kg·day)] for 15 days, and those in mesalazine-treated group given mesalazine solution [0.5 g/(kg·day)] by gastric lavage for the same days. Animals in normal group and model group were administered 3 mL water by gastric lavage for 15 days. On the 16th day, after fasting for 24 h, the rats were sacrificed for the removal of colon tissues. The expression levels of DOR, β-arrestin1 and Bcl-2 were determined in colon tissues by immunohistochemistry and real-time quantitative polymerase chain reaction (RT-PCR), respectively. It was found that the expression levels of DOR, β-arrestin1 and Bcl-2 protein and mRNA were significantly increased in the model group as compared with the other groups (P<0.05). They were conspicuously decreased in both mesalazine-treated and oxymatrine-treated groups in contrast to the model group (P<0.05). No statistically significant difference was noted in these indices between mesalazine- and oxymatrinetreated groups (P>0.05). This study indicated that the DOR-β-arrestin1-Bcl-2 signal transduction pathway may participate in the pathogenesis of UC. Moreover, oxymatrine can attenuate the development of UC by regulating the DOR-β-arrestin1-Bcl-2 signal transduction pathway.

The experimental study of lipo-sodium morrhuate promoting apoptosis of ECV-304 cells / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To evaluate the effect of lipo-sodium morrhuate on ECV-304 cell line.</p><p><b>METHODS</b>The effect lipo-sodium morrhuate was evaluated by toxicology trial (MTT), electron microscope, DNA electrophoresis and flow cytometer.</p><p><b>RESULTS</b>The toxicology results showed, that the number of vital cells in lipo-sodium morrhuate group decreased slowly. The electron microscope exhibited apoptosis in the lipo-sodium morrhuate group. And there were typical DNA ladder in DNA electrophoresis and typical apoptosis peak in flow cytometer. The apoptosis rate was 22.23%.</p><p><b>CONCLUSIONS</b>Unlike the normal preparation of sodium morrhuate, lipo-sodium morrhuate could induce apoptosis of ECV-304 cell line.</p>

Apoptotic study on the effect of fluorine and selenium on the human hair follicle in vitro / 中华整形外科杂志

<p><b>OBJECTIVE</b>The aim of this study was to observe the human hair follicle apoptosis status affected by fluorine and the antagonism effect by selenium in vitro.</p><p><b>METHODS</b>The single hair follicles were separated and cultured, then they were added in different concentrations of sodium fluoride and sodium selenite. Chosen the appropriate concentrations, they were divided into 7 groups. The TUNEL was used to investigate the apoptotic cells of different parts. The morphous of hair follicles was observed consecutively and electron microscope was used.</p><p><b>RESULTS</b>We found that in 1 mmol/L and 10 mmol/L sodium fluoride groups, when the human hair follicles in vitro were cultured on the 5th day, the apoptotic cells of outer root sheath (ORS), dermal sheath and hair papilla, hair bulb were obviously increased. But 0.01 mmol/L sodium selenite weakened the toxicity of 1 mmol/L sodium fluoride at the outer root sheath and hair bulb (P < 0.05).</p><p><b>CONCLUSIONS</b>Different concentrations of sodium fluoride had different effect on the growth of human hair follicle in vitro which were cultured on 5th day. Sodium fluoride of certain concentration could accelerate the apoptosis of human hair follicle in vitro. Sodium selenite of certain concentration could act antagonism to the toxicity of sodium fluoride.</p>

Compare the effect of lipo- and normal prepared Sodium Morrhuate on ECV-304 cell line / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To compare the effect of Sodium Morrhuate on ECV-304 between its lipo- and normal preparation.</p><p><b>METHODS</b>The ECV-304 cell line was supplemented with Sodium Morrhuate and lipo-Sodium Morrhuate in order, and the result on morphology (microscope, Giemsa Staining and electron microscope), cell activity (MTT), and flow cytometer between the two preparation were compared.</p><p><b>RESULTS</b>In normal preparation group, cell's edema occurred. Chromatin was like catkins. Tumefaction and degeneration of mitochondrion and endoplasmic reticulum appeared. In lipo-Sodium Morrhuate group, the membrane was creased and processus appeared. Chromatin aggregates to the membrane of nucleus was like crescent, and then broken. The apoptotic body was formed. MTT changes showed that the curve of the normal preparation group was steep and the change time was short relatively, which cues the vital cells decreased sharply. The curve of lipo-Sodium Morrhuate group was gentle and the change time was long relatively, which cues the vital cells decreased slowly. The flow cytometer showed that typical apoptosis peak appeared.</p><p><b>CONCLUSION</b>The normal preparation group shows an acute toxic effect on ECV-304 cell line, which result in a necrosis course, while lipo-Sodium Morrhuate shows a gradual releasing process, which may indicate a apoptosis course.</p>

Reflection on Medical Behavior of Intern's Practice on Outpatient in Oral and Maxillofacial Surgery / 中国医学伦理学

According to the characteristic of the practice in the outpatient dentofacial surgery,we analyzed the prominent contradiction in the process.With the progress of the medical service law and the innovation of the medical treatment mode,we must pay more attention to the ethics problems on the medical education.Before practice,we must strengthen the students' training in stimulator,the concept of legal,ethics,communication skill and so on.Teachers and hospitals should take the responsibility.The relevant laws and regulations ought to be modified step by step to ensure the practice.