Objective To study the expression of receptor for advanced glycation end products ( RAGE ) in chronic adriamycin ( ADR )-induced cardiotoxicity mice . Method A mouse model of chronic cardiotoxicity was established by intraperitoneal injection of 5 mg/kg ADR once a week for continuous 3 weeks.Mice treated with the same volume of saline were used as control group (6 mice in each group).Echocardiography and histopathological examination were used to evaluate the myocardial injury , cardiac function and ventricular remodeling .The expression of RAGE in cardiac tissues was detected by immunohistochemical staining and Western blotting .Results Echocardiography indicated that ADR-treated mice had reduced left ventricular ejection fraction , while histopathological analysis of cardiac tissues showed obvious cardiac damage . RAGE protein in cardiac tissues was highly expressed in chronic ADR-induced cardiotoxicity mice .Conclusion RAGE is highly induced and may be involved in the cardiotoxicity after ADR treatment .

OBJECTIVE To explore the clinical efficacy of adenoidectomy in treating pediatric secretory otitis media,sinusitis and snoring. METHODS A retrospective study was conducted to analyze the clinical features,therapeutic methods and prognosis of 68 children in hospital who underwent adenoidectomy to treat secretory otitis media,sinusitis or snoring. RESULTS The conditions of the 68 children were marked improved after the removal of hypertrophic adenoids. The total clinical effectiveness rate was 100 % and the cure rate was 86.8 %. CONCLUSION Hypertrophic adenoids is a fundamental cause of pediatric secretory otitis media,sinusitis and snoring. The removal of hypertrophic adenoids is a safe and effective method for treating pediatric secretory otitis media,sinusitis and snoring.

Objective: To study the coumarin from the seeds oil leavings of Xanthoceras sorbifolia. Methods: The chemical constituents were isolated and purified by combination of silica gel, macroporous resin, Sephadex LH-20, and ODS column chromatography. Their structures were elucidated by spectral and chemical methods. The cytotoxicity of the new compound against 10 selected human cancer cell lines was assayed. Results: Five comarins were isolated and identified as fraxetin-7-O-β-D-[6’-(3’'‑hydroxyl‑3’’- methylglutaryl)] glucopyranoside (1), fraxoside (2), fraxetin (3), scopoline (4), and esculetin (5), respectively. Conclusion: Compound 1 is a new compound. Unfortunately, this compound exhibited no cytotoxicity with tested cell lines.

Objective To study the physical characteristics of body of Xibe adults in Liaoning province and to accumulate data for the studyof physical anthropology. Methods The investigation method and judging standard were refered to correlative regulations in " Anthropometric Method ". The survey included 33 measurement items, 5 indicators and 6 types, 330 Xibe adult people (male 174, female 156) were recruited. Results According to the classification of body part index, the rates of long trunk, wide chest, wide shoulder and wide pelvis were the highest in all the adults of Xibe nationality in Liaoning province, the rates of middle and sub-long legs were the highest in the males, and the rates of super short legs were the highest in the females. According to the stature type, the rates of high type were the highest in males and females. Conclusion The body physical characteristics of male adults of Xibe nationality in Liaoning are the most similar to those of male adults of Xibe nationality in Xinjiang, and the body physical characteristics of female adults of Xibe nationality in Liaoning were between those of female adults of ethnic minorities in Northwest China and Northeast China.

Objective To investigate the possible inhibition effect of a domestic novel drug-eluting balloon(DEB), such as controlling the vascular stenosis and reducing the intimal hyperplasia, on obstructive peripheral arterial disease (PAD) of lower extremity. Methods Male New Zealand rabbits (weighted 2.5-3.0 kg) were used for this study. Mustang bare metal stents (BMS) were separately implanted at both the proximal and distal site of abdominal aorta to establish the PAD models in rabbits. Bare balloon (PTA group) or drug-eluting balloon (DEB group) was separately used to dilate the stent segment of the aorta. The animals were sacrificed 28 days after the treatment. The aorta stent specimens were collected and sent for pathologic examination. Using Masson staining method the degree of intimal hyperplasia was estimated and the expression level of paclitaxel-targeted β-tubulin was determined with immunohistochemical method. The results were compared between the two groups. Results Morphologically, both the degree of intimal hyperplasia and the vascular stenosis rate in DEB group were significantly lower than those in PTA group. Meanwhile, immunohistochemical examination of paclitaxel-targeted β-tubulin indicated that its expression level in DEB group was obviously higher than that in PTA group. Conclusion This experimental study indicates that the domestic novel DEB has potential inhibition effect in respect of controlling the loss of lumen as well as reducing the intimal hyperplasia. This novel DEB carries excellent property, suggesting the possibility to use DEB in clinical treatment of PAD.

Objective By using optical coherence tomography (OCT) to evaluate the vascular neointimal hyperplasia and the stent strut coverage degree in patients with acute myocardial infarction (AMI) and in patients with stable angina (SA) one year after receiving drug-eluting stent (DES) implantation, and to compare the clinical results between the two groups. Methods A total of 39 patients, who received DES implantation due to coronary heart disease, including AMI (n=16, AMI group) and SA (n=23, SA group), during the period from March 2011 to July 2012, were enrolled in this study. One year after DES implantation, coronary angiography and OCT reexaminations were performed in all patients. The neointimal hyperplasia (NIH) thickness, NIH area, NIH volume, strut coverage and apposition rate were determined with OCT. The results were compared between the two groups. Results OCT measuring results showed that the mean NIH thickness of AMI group and SA group was ( 66 . 8 ± 20 . 7 ) mm and ( 121 . 6 ± 135 . 7 ) mm respectively (P=0.022); the NIH volume ratio were 5.66%±3.18% and 11.88%±8.22% respectively (P=0.005); the percentage of cross-section with NIH thickness over 100 μm was 22.56%±23.99% and 40.14%± 30.01% respectively (P=0.034); and the percentage of overall stent strut coverage was 89.27%±6.40% and 93.42%±7.03% respectively (P=0.007). All the above mentioned data of AMI group were obviously lower than those of SA group. Conclusion After DES implantation, the intimal repair, intimal hyperplasia and stent strut coverage in AMI patients are poorer.

[摘 要] 目的：探讨鼠尾草酸（CA）通过调节CXC基序趋化因子受体7（CXCR7）/CXC基序趋化因子配体（CXCL12）轴对胃癌AGS细胞增殖、迁移和侵袭的影响。方法：用不同浓度（0、5、10、20、40、80 µg/mL））的CA处理胃癌AGS细胞，采用CCK-8法筛选合适的CA浓度；将AGS细胞分为对照组（未经处理的AGS细胞）、CA组（20 µg/mL CA处理）、CA+siCXCR7组（转染siCXCR7+20 µg/mL CA处理）、CA+siNC组（转染siNC+20 µg/mL CA处理）、CA+vectorNC组（转染vectorNC+20 µg/mL CA处理）、CA+vectorCXCR7组（转染vectorCXCR7+20 µg/mL CA处理），采用CCK-8法检测AGS细胞增殖的变化，qPCR法检测细胞中CXCR7、CXCL12 mRNA表达水平的变化，Transwell实验检测细胞侵袭能力的变化，划痕实验检测细胞迁移能力的变化，WB法检测周期蛋白D1、Bcl-2、CXCR7、CXCL12、MMP-2蛋白表达的变化。结果：不同浓度CA均可抑制AGS细胞存活率，且浓度为20 µg/mL时，细胞存活率接近50%，故选择20 µg/mL CA用于后续研究。与对照组相比，CA组增殖率、侵袭数、迁移率、周期蛋白D1、MMP-2、Bcl-2、CXCR7、CXCL12 mRNA及蛋白表达显著降低（均P<0.05）；与CA+siNC组相比，CA+siCXCR7组增殖率、侵袭数、迁移率、周期蛋白D1、MMP-2、Bcl-2、CXCR7、CXCL12 mRNA及蛋白表达显著降低（均P<0.05）；与CA+vectorNC组相比，CA+vectorCXCR7组增殖率、侵袭数、迁移率、周期蛋白D1、MMP-2、Bcl-2、CXCR7、CXCL12 mRNA及蛋白表达显著增加（均P<0.05）。结论：CA可抑制AGS细胞增殖、迁移和侵袭，其机制可能与抑制CXCR7/CXCL12轴有关。

Objective: To explore the effects of plumbagin (PLB) on the proliferation and apoptosis of hepatocellular carcinoma hepG2R cells resistant to sorafenib, and to clarify its mechanism. Methods: The hepatocellular carcinoma cells hepG2 were cultured in vitro and the models of sorafenib-resistant HepG2R cells were set up. MTT assay was used to identify the resistance factor and screen the concentration and time of drug. According to the results, the concentrations of sorafenib and PLB were confirmed as 5 μmol · L-1 and 2 μmol · L-1. The action time in various groups was 48 h. The HepG2R cells were randomly divided into control group, sorafenib (5 μmol · L-1) group, PLB (2 μmol · L-1) group, sorafenib (5 μmol · L-1) combined PLB (2 μmol · L-1) group (combination group). MTT assay was used to detect the cell vitality in various groups. The clone formation rates of cells in various groups were detected by clone formation assay. The apoptotic rates of cells in various groups were determined with Hoechst33342 assay and flow cytometry (FCM). The expression levels of cleaved Caspase-3, Bax and Bel-2 proteins in the cells in various groups were examined by Western blotting method, and the Bax/Bcl-2 ratio was calculated. The reactive oxygen (ROS) levels in the cells in various groups were detected by ROS detector kit. Results: As the increasing of concentrations of sorafenib, the cell vitalities of HepG2 and HepG2R cells were gradually decreased; the IC5o of sorafenib-resistant HepG2R cells was 4. 5 times as much as HepG2 cells (P<0. 05). The sensitivities of sorafenib resistant HepG2R cells were increased with the increasing of PLB concentrations and prolongation of time. Compared with control group, sorafenib group and PLB group, the clone formation rate of the cells in combination group was decreased (P<0. 05 or P<0. 01). The Hoechst 33342 assay results showed the nuclei were lightly stained; a few of the nuclei in sorafenib group and PLB group were strongly stained and bright; while in combination group, the nuclei were mostly stained and chromatin was condensed and bright. The FCM results showed that compared with control group, sorafenib group and PLB group, the apoptotic rate of cells in combination group was significantly increased (P< 0. 05 or P< 0. 01). The Western blotting results showed that the expression level of cleaved Caspase-3 in the cells and the Bax/Bcl -2 ratio in combination group were increased significantly (P<0. 05 or P<0. 01). The ROS level in the cells in combination group was higher than those in the other groups (P< 0.05 or P<0. 01). Conclusion: PLB can improve the resistance of hepartocellular carcinoma to sorafenib and the mechanism may be related to increasing the ROS level.

AIM: To elucidate the relationship between childhood asthma susceptibility and clinical efficacy of inhaled glucocorticoids (ICS) in children with different genotypes of asthma by exploring rs776746 and rs15524 single nucleotide polymorphisms (SNPs) of cytochrome P450 enzyme 3A5 (CYP3A5) gene in asthmatic children and healthy children. METHODS: The CYP3A5 gene rs776746 and rs15524 polymorphic sites were detected in 79 children (Case group) with asthma of Han nationality and 100 healthy children (Control group) who met the inclusion criteria admitted to the Northern Theater General Hospital in Northeast China from October 2016 to October 2020, and genotype, allele and linkage analysis were performed. The case group was given inhaled glucocorticoids by nebulised inhalation for 3 months, and lung function and exhaled breath nitric oxide (FeNO) were measured at entry and after treatment, and asthma control score C-ACT/ACT was done after treatment, so as to compare the prevalence of different genotypes and the differences in the above test index scores. RESULTS: There was complete linkage disequilibrium at rs776746 and rs15524 loci. There were three genotypes of T/T, T/C and C/C at rs776746 locus of CYP3A5 gene. There were significant differences in the frequency of different genotypes between the case group and the control group (χ

Objective To investigate the role of DWI in differentiating autoimmune pancreatitis ( AIP) from pancreatic cancer ( PC) , and in the therapeutic effect evaluation of AIP.Methods DWI data of 26 cases with AIP , 29 cases with PC and 30 cases with normal pancreas ( NP ) were analyzed retrospectively.The distribution type and signal feature of lesions in cases with AIP or PC were evaluated by Chi-squared test.ADC values were measured and compared among 3 groups by Kruskal-Wallis test.ADC values of AIP and PC were analyzed by using ROC curve to determine the optimal threshold and diagnostic efficiency.ADC values were compared in AIP ( n=15 ) before and after steroid therapy by paired t test.Results Diffuse lesions were detected in 21 cases with AIP and 3 cases with PC, while focal lesions in 5 cases with AIP and 26 cases with PC (χ2 =27.64, P<0.01).On DWI, most of AIP (n=19) and PC (n=24) showed hyper-intense signal, while a few of AIP (n=7) and PC (n =5) showed iso-intense signal (χ2 =0.75, P>0.05).The median ADC values of AIP, PC and NP were 1.15 ×10 -3,1.35 × 10 -3 ,1.59 ×10-3 mm2/s, respectively; and the difference was statistically significant ( H=45.60, P <0.01).ROC analysis yielded an optimal ADC cutoff value of 1.255 ×10 -3 mm2/s (80.8% sensitivity, 79.3%specificity and 0.871 area under curve for the diagnosis of AIP ).ADC values of AIP ( n=15) were markedly increased from the baseline (1.10 ±0.19) ×10 -3 to (1.57 ±0.12) ×10 -3 mm2/s after steroid therapy (t=-10.14, P<0.01).Conclusions DWI may be useful for diagnosing and evaluating the effect of steroid therapy in AIP.ADC values of AIP were significantly lower than those of pancreatic cancer and normal pancreas.After steroid therapy , ADC values were markedly increased in AIP.