Objective To investigate the role of miR-125b-1 gene in oncogenesis and progression of human lung cancer. Methods PCR-SSCP was used to detect miR-125b-1 gene mutation in 121 specimens from primary site of lung cancer tissues and 22 samples of nor- real adjacent lung tissues. Results There were 40 cases of miR-125b-1 gene mutation, and gene mutation was positively correlated to the status of lymph node metastasis ( r,=0.285, P＜0.01 ) and clinical stage metastasis( r, =0. 241, P ＜0. 01 ), but no relationship between miR-125b-1 mutation and other clinical features was found. The postoperative survival time in patients with miR-125b-1 gene mutation was significantly longer than those with low expression ( P＜0.05). Conclusion There exist miR-125b-1 gene mutation in lung cancer, miR- 125b-1 gene mutation probably plays a crucial role in lung carcinogenesis.

In this review, the analytical methods of polyethylene glycol-modified proteins are introduced, including spectroscopy, liquid chromatography, electrophoresis, mass spectrometry, etc. These methods are compared in respect to their individual characteristics.

This paper expatiates the application of classification, clustering-based data mining technology to Clinical Laboratory Information System (CLIS) with the introduction of the concepts of CLIS and data mining.

Objective To evaluate the protective effects of Jiedu Huayu Decoction(JHD)on hepatic immune injury in mice induced by concanavalin A(Con A) and to explore its mechanism.Methods Sixty NIH mice were randomly divided into 5 groups:normal control group(group A),model group(group B),high-dose JHD group(group C),low-dose JHD group(group D) and bifendate group(group E).Except those in group A,mice in other groups were injected with Con A(at the dose of 20 mg/kg) via the tail vein at the first day of experiment.Group C and group D were orally administrated with JHD at the dose of 72.0 g/kg and 18.0 g/kg,respectively.Group E were orally administrated with bifendate at the dose of 150 mg/kg.All the drugs were given once daily for 5 consecutive days.Four hours after last medication,mice were injected with Con A once again at the same dose of 20 mg/kg.Serum aminotransferase(ALT) activity and interleukin-6(IL-6) concentration were detected at the 8th hour after Con A administration.Hepatic histopathological examination was performed,and the expression of intercellular adhesion molecule-1(ICAM-1) in hepatic tissue was detected by immunohistochemical method.Results ALT activity and IL-6 content in group C and group D were obviously lowered,hepatic histopathological changes were alleviated,and the expression of ICAM-1 in liver tissue was attenuated compared with those in group B(P

[Objective] To observe the effect of heated needle on the pathological changes of articular cartilage in mice with experimental knee osteoarthritis (OA). [ Methods ] Sixty-four NIH mice were randomly divided into 4 groups: heated needle group, electro-acupuncture (EA) group, model group and normal control group, 16 mice in each group. The mice models with knee OA were made with Xie's method, and then were treated for 2 weeks according to the experimental design. [Results] After treatment, the movable angle of right back knee in mice was increased in heated needle group and EA group ( P

Objective To assess risk factors in NSCLC with N2 metastasis.Methods A total of 177 NSCLC patients (109 males,68 females; age:(60.1 ± 10.6) years) who underwent both 18F-FDG PET/CT scan and surgery were enrolled.They were divided into two groups.One was with N2 metastasis (N2+) and the other was without (non-N2+).The gender,age,location,size,primary tumor SUVmax,histopathologic type and differentiation grade between N2+ group and non-N2+ group were compared with x2 test and two-sample t test.After assignment of significant factors and groups,correlations between each factor and group were analyzed with uni-and multivariate analyses,and then the risk factors were identified finally with logistic regression analysis.Results Significant difference among factors of tumor size ((36.1±19.7) mm vs (49.3±24.4) mm),SUVmax(8.81±6.23 vs 11.21±4.43) and differentiation grades (high:3 vs 0; moderate:74 vs 11; poor:65 vs 24) were observed between non-N2+ group and N2+ group (t =-2.969,-2.633,x2 =6.143,all P＜0.05).Besides,the univariate analysis showed significant correlations between tumor size,SUVmax,differentiation grade and N2 status (r=0.201,0.245,0.185,all P＜0.05).However,multivariate logistic regression revealed that only SUVmax had a predictive value (β=0.546,P＜0.01).The incidence of N2 metastasis went up along with the increase of SUVmax.There was no N2 metastasis in the patients with SUVmax ≤2.5,and the incidence rate of metastasis increased to 0.29 in those with SUVmax＞7.5.Conclusion SUVmax may be an independent risk factor to predict N2 metastasis in NSCLC patients.

Objective To investigate expression of Fos protein in rat brains following restraint stress. Methods The experimental rats were restrained in a small plastic tub for,1,3 and 6 hours,and were sacrificed at 30 min after removing restraint.Immunohistochemical ABC method was used to observe distribution of Fos protein-like immunoreactive(-LI)products in rats brain.Results Fos-LI neurons appeared in (1)Frontal brain:the cingulum,cortex(especially in third and fifth layer),lateral septal nucleus,central amygdaloid nucleus.(2)Diencephalon:the thalamic paraventricular nucleus,lateral geniculate body and medial genicular body,hypothalamic paraventricular nucleus,supraoptic nucleus,periventricular area of third ventricle,arcuate nucleus.(3)Brain stem:the superficial layer of superior colliculus,periaqueductal gray,cortical area of inferior colliculus,lateral parabrachial nucleus,locus coeruleus,A5 area,cochlear nuclei,medullary viceral zone in medulla oblongata.The expression of Fos-LI neurons peaked in rats restrained for 1h,at 3h,then began to decrease,at 6h,significantly decreased. Conclusion Fos-LI neurons appeared in many areas of brain induced with restraint stress.The number of Fos-LI neurons decreased following restraint time.

Objective To study prevention and treatment for patients during the intermittent period of maintaining hemodialysis complicated by acute left heart failure. Methods The treating process of 126 examples suffered from acute left heart failure during the intermittent period of 14 225 person-time maintaining hemodialysis in 143 patients were retrospectively analyzed. Results In this case group, 0.89% suffered from acute left heart failure during the intermittent period of hemodialysis and the successful rescuing rate was 88.9%. Conclusions Applying the treatment of emergency hemodialysis, quickly filtering body fluid, the curative effect is reliable and rapid. It is one of the best ways to cure patients suffered from acute left heart failure during the intermittent period of maintaining hemodialysis. Combined with other treatments, it will be able to improve the successful rate, and ensure the sufficiency of hemodialysis. United with other steps of reducing blood pressure, such as using angiotensin converting enzyme inhibitors, angiotensin II receptor blocker, and ? receptor blocker, it is an effective countermeasure to prevent patients suffering from acute left heart failure during the intermittent period of maintaining hemodialysis, and effectively reduces its appearance as well.

OBJECTIVETo discuss the mechanism of gambogenic acid (GNA) in inducing the apoptosis of melanoma B16 cells.

METHODThe inhibitory effect of GNA on the proliferation of B16 cells was measured by the methyl thiazolyl tetrazolium (MTT) assay. The effect of GNA on B16 cells was detected by the Hoechst 33258 staining. The transmission electron microscopy was used to observe the ultra-structure changes of B16 cells. The changes in PI3K, p-PI3K, Akt, p-Akt, p-mTOR, PTEN proteins were detected by the Western blotting to discuss the molecular mechanism of GNA in inducing the apoptosis of B16 cells.

RESULTGNA showed a significant inhibitory effect in the growth and proliferation of melanoma B16 cells. The cell viability remarkably decreased with the increase of GNA concentration and the extension of the action time. The results of the Hoechst 33258 staining showed that cells processed with GNA demonstrated apparent apoptotic characteristics. Under the transmission electron microscope, B16 cells, after being treated with GNA, showed obvious morphological changes of apoptosis. The Western blot showed a time-dependent reduction in the p-PI3K and p-Akt protein expressions, with no change in p-PI3K and p-Akt protein expression quantities. The p-mTOR protein expression decreased with the extension of time, where as the PTEN protein expression showed a time-dependent increase.

CONCLUSIONGNA could inhibit the proliferation of melanoma B16 cells and induce their apoptosis within certain time and concentration ranges. Its mechanism in inducing the cell apoptosis may be related to PI3K/Akt/mTOR signaling pathways.

Animals ; Apoptosis ; drug effects ; Blotting, Western ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Cell Survival ; drug effects ; Dose-Response Relationship, Drug ; Melanoma ; metabolism ; pathology ; ultrastructure ; Mice ; Microscopy, Electron, Transmission ; Microscopy, Fluorescence ; PTEN Phosphohydrolase ; metabolism ; Phosphatidylinositol 3-Kinases ; metabolism ; Proto-Oncogene Proteins c-akt ; metabolism ; Signal Transduction ; drug effects ; TOR Serine-Threonine Kinases ; metabolism ; Terpenes ; pharmacology ; Xanthenes ; Xanthones ; pharmacology

Animals ; Drug Tolerance ; Glycogen Synthase Kinase 3 ; metabolism ; Glycogen Synthase Kinase 3 beta ; Morphine ; Phosphorylation ; Rats ; Signal Transduction