AIM: To observe the effect of microRNA-16 (miR-16) on the megakaryocytic differentiation of K562 cells, and to explore the potential mechanism.METHODS:miR-16 was over-expressed or silenced by transfection with miR-16 mimics or inhibitor in K562 cells.The level of miR-16 was detected by real-time PCR.The expression of CD41, CD42b and CD61, as megakaryocytic differentiation markers, was detected by flow cytometry.The effect of miR-16 on the expression of myeloblastosis oncogene ( MYB) was measured by Western blotting, and flow cytometry was performed to confirm whether the effect of miR-16 on expression of CD41, CD42b and CD61 was mediated by MYB.RESULTS:Transfection with miR-16 mimics dramatically elevated the level of miR-16 and the expression of CD41, CD42b and CD61 in the K562 cells.Transfection with miR-16 inhibitor decreased the level of miR-16 and the expression of CD41, CD42b and CD61 in the K562 cells (P<0.05).The expression of MYB was regulated by miR-16, and MYB silencing reversed the regulation of CD41, CD42b and CD61 induced by miR-16.CONCLUSION:miR-16 regulates the megakaryocytic dif-ferentiation of K562 cells by targeting MYB.

The application of Geographical Information System (GIS) and research the application of GIS on Medical Information System were introduced. The function and character of CIS, analysis and control of infectious disease source, application of ambulance dispatcher were recounted. The efficiency of treatment and rescue can be improved in modern information condition. It has played an active role in medical service system and reasonable distribution of medical resources.

Objective To observe the clinical effects of eyehd reconstruction by regional flap combined with xenogeneic acellular dermal matrix transplantation for eyelid defect after malignant tumor excision.Methods Thirty-five cases (35 eyes) in our hospital were selected as the objects.Among them,basal cell carcinoma was 21 cases,meibomian gland carcinoma was 13 cases,squamous cell carcinoma was 1 cases;12 cases of upper eyelid and 23 case of lower eyelid were involved.All patients were subjected to intraoperative frozen,and the incision margin was determined according to the frozen results.After resection of the tumor,the eyelid had full-thickness defects in different degrees.The xenogenic acellular dermal matrix was used to replace the conjunctival tarsal tissue,and the adjacent flap or transposition flap was used to repair the eyelid defect according to the size of skin defect.The healing of flap,oral repair film,eyelid closure and adhesion were observed.Results After half a year follow-up,the acellular dermal matrix were completely dissolved by crawling the conjunctival epithelium covering,the flap healed with no flap necrosis.28 patients recovered well after operation without hypophasis and entropion,ectropion.4 patients had mild hypophasis,and there was no case of exposure keratitis.3 patients were with mild symblepharon.Conclusion The acellular dermal matrix can replace tarsal conjunctival tissue,which combined with regional flap has good clinical curative effect for eyelid defect after malignant tumor excision.This treatment can reduce the pain of patients who take oral mucosa and avoid the reoperation of eyelid reconstruction.

Objective To explore the medication rules of Professor WEI Pin-kang in treating gastric cancer; To provide references for clinical medication. Methods Gastric cancer cases treated by Professor WEI Pin-kang in TCM outpatient department of Shanghai Changzheng Hospital from January 2008 to December 2015 in WEI Pin-kang TCM Studio Outpatient Medical Cases (including electronic database and paper medical cases database). TCM Inheritance Support System V2.5 was used to build database. Frequency analysis, association rule analysis, complex system entropy clustering and other data mining methods were used to analyze frequency, medicine association rules and core medicine combination. Results Totally 305 clinical prescriptions including 185 kinds of Chinese materia medica were collected. The Chinese meteria medica with the high frequency were Pinellinae Rhizoma Praeparatum, Arisaematis Rhizoma Preparatum and Galli Gigerii Endothelium Corneum, etc. High frequency Chinese materia medica were with the properties of warm and cold, and with the flavors of bitter, spicy and sweet, to Stomach Meridian of Foot-Yangming, Spleen Meridian of Foot-Taiyin, and Liver Meridian of Foot-Jueyin. The medicine combinations with high frequency were Pinellinae Rhizoma Praeparatum and Arisaematis Rhizoma Preparatum,Pinellinae Rhizoma Praeparatum and Galli Gigerii Endothelium Corneum, and Galli Gigerii Endothelium Corneum and Arisaematis Rhizoma Preparatum. The common medicine pairs were Aurantii Fructus and Aurantii Fructus Immaturum and Scorpio and Scolopendra. Analysis showed 36 association rules of the confidence > 0.99. 70 core medicine combinations and 11 new prescription were obtained. Conclusion Professor WEI Pin-kang treats gastric cancer based on phlegm theory. The dissolving phlegm and eliminating stagnation medicine, regulating qi-folwing for harmonizing stomach medicine and heat-clearing and detoxifying medicine are commonly used.

Objective Genetic diversity and affinity relationships among 13 species of Dendrobium Sw.were analyzed,the result laid a solid foundation for the better use of this resources.Methods Random amplified polymorphic DNA(RAPD) technique was used to analyze genetic diversity,and the dendrogram was constructed by UPGMA.Results Ten RAPD primers were applied to do random amplification.A total of 188 DNA bands was detected,180 among which were polymorphic,the average rate of polymorphic bands was 95.74%.The result of cluster analysis by using UPGMA method showed that 13 genotypes could be classified into three types in genetic distance 0.63.This outcome was corresponding to the result by using traditional classification.Conclusion It is concluded that RAPD markers can be used on the studies of genetic relationships and classification of species of Dendrobium Sw.sensitively.

Objective To couple folate with chitosan and prepare folate-coupled chitosan by different connection ratio.Methods The folate-coupled chitosan was prepared by the reaction of the activated folate ester with the amine group on the chitosan.Then the folate-coupled chitosan was verified by infrared spectroscopy.The number of folates in each of the chitosans was measured by UV spectrophotometry.Results Infrared spectroscopy showed that the folate-coupled chitosan was prepared successfully,and the number of folates in each chitosan was approximately 3,10,20 and 30.Conclusion Coupling of folate with chitosan was successful,and folate-coupled chitosan by different connection ratio was successfully prepared.

Objective:To analyze the genetic test results and ultrasonographic markers of 41 fetuses with short femurs and their relationship.Methods:This study retrospectively analyzed 41 fetuses who were diagnosed with short femurs by ultrasound during 19-37 gestational weeks and underwent prenatal genetic examination at the First Affiliated Hospital of Zhengzhou University from January 2018 to June 2019. According to the results of genetic examination, these cases were divided into three groups after excluding three cases of variants of unknown significance: genetically normal group, chromosome variation (including chromosomal aneuploidy and pathogenic or likely pathogenic copy number variations) group, and gene mutation (including pathogenic or likely pathogenic gene mutations) group. According to the head circumference (HC), abdominal circumference (AC) and femur length (FL), Z FL, FL/HC, FL/AC, ΔZ H-F and ΔZ H+A-2F for each fetus were calculated. One-way ANOVA and LSD- t test were used for statistical analysis. Results:(1) Among the 41 fetuses with short femurs, there were 28 in the genetically normal group, five in the chromosome variation group, three with chromosome variations of unknown significance and five in the gene mutation group. (2) In the genetically normal, chromosome variation and gene mutation groups, Z FL values were -2.78±0.77, -4.36±0.69 and -4.69±0.70; FL/HC ratios were 0.178±0.011, 0.170±0.010 and 0.131±0.022; FL/AC ratios were 0.197±0.013, 0.186±0.011 and 0.151±0.017; ΔZ H-F values were 2.49±1.09, 3.53±1.28 and 8.17±1.30; ΔZ H+A-2F values were 4.44±2.00, 6.78±2.20 and 14.28±1.26, respectively. The differences in Z FL values between the genetically normal group and the chromosome variation group as well as the gene mutation group were statistically significant (both P<0.05); so were the differences in FL/HC, FL/AC and ΔZ H-F values between the gene mutation group and the genetically normal group as well as the chromosome variation group (all P<0.05) and in any pairwise comparison of ΔZ H+A-2F among the three groups (all P<0.05). Conclusions:The genetic etiology of fetal short femurs is mainly related to chromosomal variations (including chromosomal aneuploidy and pathogenic or likely pathogenic copy number variations) and gene mutation. In fetuses with chromosome variation and gene mutation, the degree of the femoral development delay relative to the development of HC and AC is worse than that in the normal genetic results group.

Objective To evaluate the role of plasma IL-37 levels in patients with acute coronary syndrome (ACS). Methods Plasma biomarkers IL-37, CRP and NT-proBNP levels were measured in 40 patients with stable angina pectoris (SA group), 65 patients with unstable angina pectoris (UA group), 47 patients with acute myocardial infarction (AMI group) and 60 control patients. Results The plasma IL-37, CRP and NT-proBNP levels were significantly increased in patients with ACS patients. A correlation analysis showed that the plasma IL-37 levels were positively correlated with the levels of CRP and NT-proBNP, and negatively correlated with LVEF. Conclusions The results indicated that the plasma IL-37 levels are associated with the onset of ACS symptoms.

Objective: To study the dynamic changes of type Th22 cell immunological response during atherosclerosis process in experimental mice in order to provide a new theoretical basis for atherosclerosis therapy. Methods: 8 weeks C57BL/6J mice were divided into 2 groups: Experiment group,n=24 ApoE-/- mice and Control group, n=24 normal mice. All animals received high fat diet and the following indexes were compared between 2 groups at 0, 4, 8, 12 weeks after treatment: aortic atherosclerotic lesions were deifned by Oil red O staining, dynamic changes of Th22 cells in spleen were measured by lfow cytometry, mRNA expressions of interleukin-22 (IL-22), IL-22R1, AhR and T-bet in aorta were examined by RT-PCR, blood levels of IL-22 was detected by ELISA. Results: Compared with Control group, Experiment group had the increased area of aortic atherosclerosis (the ratio of plaque area/lumen area) and Th22 cell (CD4+ IL-22+/CD4+T cell) amount, elevated mRNA expressions of IL-22, IL-22R1, AHR, T-bet in aorta and higher blood levels of IL-22 at all time points, the differences between each time point (except 0 week) had the statistic meaning,P<0.05. In Experiment group, the differences between 2 adjacent time points, for the area of aortic atherosclerosis and mRNA expressions of AHR, T-bet: 4 weeks vs 0 week, 8 weeks vs 4 weeks, 12 weeks vs 8 weeks all had statistic meaning; for Th22 cell amount: 4 weeks vs 0 week, 8 weeks vs 4 weeks had statistic meaning and 12 weeks vs 8 weeks had no real distinction; for mRNA expressions of IL-22, IL-22R1 and blood levels of IL-22: 4 weeks vs 0 week had statistic meaning and 8 weeks vs 4 weeks, 12 weeks vs 8 weeks had no real distinctions. Conclusion: Hyperactive immunological response of Th22 cells might be involved in atherosclerosis process, the relevant mechanism should be further studied.

Carcinoma, Non-Small-Cell Lung ; metabolism ; pathology ; Cell Membrane ; metabolism ; Cell Nucleus ; metabolism ; Cytoplasm ; metabolism ; Humans ; Lung Neoplasms ; metabolism ; pathology ; Signal Transduction ; TCF Transcription Factors ; metabolism ; Transcription Factor 7-Like 2 Protein ; Wnt Proteins ; physiology ; beta Catenin ; metabolism