Objective To study the expressions of matrix metalloproteinase-2(MMP-2)and vascular endothelial growth factor (VEGF)in laryngeal carcinoma and their clinicopathological significance.Methods The immuno-histochemical technique was used to detect the expression staining results of MMP-2 and VEGF in 54 cases of laryngeal carcinoma,23 cases of polyps of vocal cord and 1 5 cases of normal laryngeal mucous tissues verified by clinicopathology under the automatic image analyzer.Results The ex-pression rates of MMP-2 and VEGF were 72.22%(39/54)and 70.37%(38/54)in the laryngeal carcinoma tissue,which were sig-nificantly higher than 47.83% and 39.13% in polyps of vocal cord and 40.00% and 46.67% in the normal laryngeal tissues respec-tively,the differences between them had statistical significance(P<0.05).The expressions of MMP-2 and VEGF had certain corre-lation with the clinical stage,lymph node metastasis and.infiltration depth of laryngeal carcinoma.Conclusion MMP-2 and VEGF may jointly participate in the process of infiltration and metastasis in laryngeal and have certain relation with the tumorous invasive growth.

Objective To investigate the application value of nutritional support therapy after resection of esophageal cancer.Methods The clinical data of 125 patients with esophageal cancer who were admitted to the Shandong Provincial Hospital Affiliated to Shandong University between May and November 2013 were retrospectively analyzed.According to the Nutritional Risk Screening 2002 (NRS 2002), 58 patients with scores of NRS 2002 ≥3 were allocated to the A group including 43 receiving nutritional support therapy in the A1 group and 15 receiving no nutritional support therapy in the A2 group;67 patients with scores of NRS 2002 ＜ 3 were allocated to the B group including 29 receiving nutritional support therapy in the B1 group and 38 receiving no nutritional support therapy in the B2 group.The NRS 2002 was used as a screening tool of nutritional risk within 48 hours after admission.There was nutritional risk in patients with scores of NRS 2002 ≥ 3 and no nutritional risk in patients with scores of NRS 2002 ＜ 3.Patients and their families would choose whether or not underwent nutritional support therapy after the risks being informed.Parenteral nutritional support therapy used any 2 kinds of intravenously infusions of glucose, fat emulsion and amino acid, and enteral nutritional support therapy included tube feeding enteral nutrition or oral nutriments.The calories ≥ 10 kcal/(kg · d) were offered for more than 5 days.The incidence of malnutrition in patients with nutritional risk was calculated, and the level of serum Alb and prealbumin before operation, at postoperative day 3 and day 7, postoperative recovery time of gastrointestinal function and duration of hospital stay were detected.Count data were analyzed using the chi-square test.Measurement data with normal distribution were presented as-x ± s.Comparison among groups was analyzed using the LSD-t test, and repeated measures data were analyzed by the repeated measures ANOVA.Results Of 58 patients in the A group, 51 patients were complicated with malnutrition with a incidence of 87.9％, and nutritional support therapy in 43 patients was well tolerated without abdominal pain, distension and diarrhea.The level of serum Alb before operation, at postoperative day 3 and day 7 were (29.4 ± 1.7) g/L, (29.8 ± 1.5) g/L, (32.2 ± 2.3) g/L in the A1 group, (28.5±1.9)g/L, (27.0±1.8)g/L, (28.3 ±1.7)g/L in the A2 group, (35.8±1.3)g/L, (36.0± 1.4) g/L, (37.4 ± 2.1) g/L in the B1 group and (34.5 ± 1.3) g/L, (35.3 ± 1.7) g/L, (36.3 ± 1.5) g/L in the B2 group, showing a significant difference in the changing trends between the A1 and A2 groups (F =2.541, P ＜0.05) and no significant difference between the B1 and B2 groups (F =0.734, P ＞ 0.05).The number of patients with level of prealbumin ＜2.5 g/L and ≥2.5 g/L before operation, at postoperative day 3 and day 7 were 17 and 26, 13 and 30, 10 and 33 in the A1 group, 6 and 9, 9 and 6, 10 and 5 in the A2 group, 5 and 24, 6 and 23, 7 and 22 in the B1 group and 7 and 31, 9 and 29, 13 and 25 in the B2 group, with a significant difference between the A1 and A2 groups (x2 =4.183, P ＜ 0.05) and no significant difference between the B1 and B2 groups (x2 =0.795, P ＞ 0.05).The postoperative recovery time of gastrointestinal function and duration of hospital stay were (3.2 ± 0.8) days and (11.6 ± 1.1) days in the A1 group, (3.8 ± 1.0) days and (15.5 ± 2.7) days in the A2 group, (2.7 ± 1.0) days and (10.6 ± 2.6) days in the B1 group and (3.2 ± 0.8) days and (11.3 ±1.5) days in the B2 group, with significant differences between the A1 and A2 groups (t =0.921, 3.005, P ＜0.05) and no significant difference between the B1 and B2 groups (t =0.927, 0.440, P ＞ 0.05).Conclusions Application of NRS 2002 for evaluating nutritional status and guiding nutritional support therapy in patients with esophageal cancer is accurate and trusted.The postoperative nutritional support therapy should be selectively and reasonably applied to patients with nutritional risk, and it can improve the nutritional status of patients with esophageal cancer, enhance postoperative recovery and reduce duration of hospital stay.

Objective To explore the diagnostic value of cerebrospinal fluid(CSF) biochemical indexes in central nervous system (CNS) infection .Methods The results of CSF culturing and detection of biochemical indexes including glucose(Glu) ,lactate dehy‐drogenase(LDH) ,chloride ion(Cl) and protein(PRO) were collected from the First Affiliated Hospital of Xi′an Jiaotong University from September to December 2013 .Taking the results of CSF culturing as golden standard ,the biochemical indexes were analyzed by using receiver‐operating characteristic(ROC) curve for single index and combined indexes .Results A total of 157 CSF speci‐mens were collected ,including 39 culture‐positive specimens and 118 culture‐negative specimens .Areas under ROC curve(AUC) of Glu ,LDH ,Cl and PRO were 0 .653 ,0 .633 ,0 .626 ,0 .671 ,respectively .The AUCs of combined detection of these biochemical inde‐xes were higher than those of single index ,and the AUC of combined detection of these four indexes was the largest ,up to 0 .694 , but all were less than 0 .7 .Conclusion Glu ,LDH ,Cl and PRO all could be independent biochemical indexes for diagnosing CNS in‐fection ,among which PRO has the highest diagnostic value .And combined detections of these indexes are better than single detec‐tions ,especially combination of four indexes ,which is the strongest indicator ,but accuracy is low whether single or combined detec‐tion .More sensitive and specific biomarkers of CSF should be explored for rapid diagnosis of CNS infection .

Objective To predict the B cell line epitopes of human cytomegalovirus glycoprotein (gB)by analyzing its structure and physicochemical properties using bioinformatics approaches .Methods Based on the sequence of the HCMV gB,the probable B cell epitopes are predicted using two online prediction programs and DNAstar software .Meanwhile,the tertiary structure of gB was constructed by homologous modeling with the assistance of SWISS -MODEL server to rule out im-possible B cell epitopes .Results and Conclusion The B cell line epitopes of gB are predicted , which provides a theoreti-cal basis for further verification of gB immunodominant epitopes and screening the source plasma with high HCMV IgG titer .

Objective To investigate the impacts of γ-ray radiation on gene expressions of peripheral blood lymphocytes in SD rats,and to screen differential expression genes and biological pathways closely related to radiation injury.Methods The differential gene expression of peripheral blood lymphocytes in SD rats was selected by microarray at 6 h after 2 Gy 60Co γ-ray exposure in vitro and in vivo.Bioinformatics analysis of the differentially expressed genes was performed by using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases.Real-time quantitative PCR was applied to verify the screen results of the microarray.Results Fifty-five genes with three times over-expressed level were screened out from the radiation groups both in vitro and in vivo and they were involved in 6 signaling pathways.There were two differentially expressed genes of microarray assay were verified by PCR assay.Conclusions Differential expressed genes in the peripheral blood lymphocytes of SD rats could be induced by γ-ray radiation and they cooperatively contributed to a variety of biological processes.

AIM:To study whether cordycepin (Cordy) plays a role in myocardial protection by regulating the expression of microRNA-455 ( miR-455) and reducing apoptosis induced by endoplasmic reticulum stress in the ischemia -reperfusion (IR) rats.METHODS: SD rats (250 ~300 g) were randomly divided into 3 groups: control group, the chests of the rats were only opened;IR group, the rats were given myocardial ischemia for 30 min, and then reperfusion for 120 min;IR+Cordy group:before IR, the rats were given Cordy (10 mg/kg) through femoral vein injection once a day for one week, and the last injection was given 30 min before ischemia.Automated biochemical analysis was used to detect rat serum activity of LDH and CK-MB.The myocardial endothelial cell ( EC) apoptotic rate was measured by TUNEL , and the ultrastructural changes of the myocardial EC were observed under transmission electron microscope .RT-qPCR was used to detect the expression of miR-455 and the mRNA levels of glucose-regulated protein 78 ( Grp78) and caspase-12 in the myo-cardium.RESULTS:Compared with control group, EC apoptosis in IR group was significantly increased (P<0.05). Compared with IR group , EC apoptosis in IR +Cordy group decreased significantly ( P<0.05 ) .Compared with control group, swelling of mitochondria , irregular membrane , loose wrinkles with vacuoles , disappeared matrix granules , irregular nuclear membrane , chromatin condensation , disappeared nucleoli and even small apoptosis body in the EC were found in IR group.Compared with IR group , the symptoms in IR +Cordy group were greatly improved .Compared with control group, the mRNA expression of Grp78 and caspase-12 as well as the miR-455 level in IR group was increased (P<0.05). Compared with IR group , the mRNA expression of Grp78 and caspase-12, as well as the miR-455 level in IR+Cordy group was decreased (P<0.05).CONCLUSION:Cordycepin attenuates myocardial EC apoptosis , down-regulates the expres-sion of miR-455, and inhibits endoplasmic reticulum stress in the myocardium .

Objective:To investigate the differentially expressed miRNAs in serum collected post operation and compared these miR-NAs with those collected pre-surgery among patients suffering from glioblastoma multiform (GBM) and undergoing regular clinical fol-low-up. These miRNAs may be potential biomarkers for the post-operative evaluation of patients with GBM. Methods:Forty-eight pa-tients with GBM and clinical pathological diagnosis were enrolled in this study. In the initial biomarker screening stage, total RNAs were extracted and subjected to Solexa sequencing to select miRNAs with significantly altered expression pre-and post-operation. Some of these differentially expressed miRNAs were chosen and verified through TaqMan probe-based qRT-PCR assay. A t-test was performed to determine the miRNAs that satisfied the two criteria, namely, fold change>2 and P<0.05. All of the patients were fol-lowed-up, and survival data were collected. The patients were then classified into two groups, namely, long-and short-survival groups, on the basis of the median of the miR-30e expression levels in the sera collected post-operation. Kaplan-Meier method and Log-rank test (SPSS version 19.0, IBM) were employed to determine the possible relationships between miR-30e expression levels in the sera collected post-operation and patients' overall survival. Results: Solexa revealed 63 differentially expressed miRNAs. Four miRNAs, namely, miR-26b, miR-30e, miR-129-3p, and miR-206, were selected on the basis of previous and present findings. These miRNAs were then verified in the RT-qPCR phase. Among these miRNAs, only miR-30e was significantly upregulated post-operation. The serum miR-30e expression level post-operation was not significantly associated with the overall survival of the patients. A low miR-30e expression level corresponded to prolonged survival. Conclusion:miR-30e was upregulated in the sera collected post-operation from patients with GBM. This miRNA may be negatively related to the tumor load of these patients. The miR-30e expression level in the serum col-lected post-surgery serum was not significantly associated with overall survival. Therefore, miR-30e may serve as a novel potential non-invasive biomarker for the post-operative evaluation of patients with GBM.

Objective To establish the determination method synthetic borneol and menthol in Keyou nanoemulsion. Methods HP-5 quartz capillary column (30 m×320 μm×0.25 μm) was used with nitrogen as the carrier gas, and FID as the detector. The temperature of the entrance of the capillary vessel column was at 230 ℃. Results Synthetic borneol and menthol in Keyou nanoemulsion were separated well. The calibration curves of synthetic borneol was obtained with good linear relationship within the range of 0.337-1.685 μg (r 2=0.998 2), the average recovery was 97.5%. The calibration curves of menthol was also obtained with a good linear relationship within the range of 0.234-1.17 μg (r 2=0.997 4), the average recovery was 97.0%. Conclusion The methord is simple and accurate. It can be used to control the quality of Keyou nanoemulsion.

Objective:To establish the microbial limit test methods for thirteen kinds of ointments. Methods:The microbial limit of 13 kinds of ointments was respectively determined by the routine method, culture medium dilution method and membrane filtration method. Results:The recovery of the tested bacteria in the samples was above 70% by the different methods. Conclusion:The micro-bial limit test methods for thirteen kinds of ointments are stablished, which may be used in the quality control.

Purpose To explore the effect of Levothyroxine on spatial working memory in patients with subclinical hypothyroidism (SCH) using blood oxygenation level dependent-functional MRI (BOLD-fMRI). Materials and Methods Sixteen patients with SCH before and after 6 months levothyroxine (LT4) treatment and 16 matched euthyroid volunteers underwent n-back task fMRI scanning. AFNI software was used for localization and quantification. Results All the subjects demonstrated activated areas including bilateral dorsolateral prefrontal cortex (DLPFC), bilateral premotor area (PreMA), supplementary motor area/anterior cingulate cortex, bilateral parietal area (PA) and right caudate nucleus/thalamus, with right hemisphere dominance. Quantitative analysis of regions of interests showed that all these regions had load effect related to memory load in the control group (P<0.001), whereas only left DLPFC, left PA, bilateral PreMA and right caudate nucleus/thalamus showed the same effect in SCH group. After 6-month treatment with LT4, BOLD signal change was observed in SCH patients within the right DLPFC, right PA and anterior cingulate/supplementary motor cortex (P<0.001). The activation intensity of working memory related brain regions was lower in SCH group compared with that of the control group. Conclusion Spatial working memory impairments in SCH patients are likely related to decreased right DLPFC and right posterior parietal function. LT4 replacement therapy is important to improve and reverse the memory impairment.