Child, Preschool ; Hearing Disorders ; prevention & control ; Humans ; Infant

Chemokine CXCL9/Mig (monokine induced by IFN-?) belongs to the subfamily of chemotactic cytokines known as CXC-chemokines. In vivo CXCL9 is mainly induced by IFN-? in macrophages and primary glial cells. In vitro, CXCL9 can be secreted by cells such as macrophages, microvascular endothelial cells and neutrophils, in response to the synergy of IFN-? and TLR(toll-like receptor) ligands. CXCL9 is a chemoattractant for activated T lymphocytes, tumor-infiltrating T-lymphocytes, but not for neutrophils or monocytes. The receptor specific for CXCL9 is CXCR3, a G protein-coupled protein which has seven transmembrane domain. The structure and the chemical characterization of CXCL9, as well as its effects on autoimmune deseases, allograft rejection, cancer therapy were reviewed.

Objective To investigate the role of antisense RNA of plasminogen activator inhibitor 1 (PAI 1) in regulating the expression of PAI 1 and vascular endothelial growth factor (VEGF) in aorta endothelial cells (EC) cultured in vitro. Methods The second extron of PAI 1 was amplified by polymerase chain reaction(PCR) and the product was inserted into eukaryotic cell expression vector pcDNA3.1(-) to construct PAI 1 antisence RNA recombinant plasmid. The recombinant plasmid was transfected into EC and the PAI 1 expression was detected by immunohistochemistry, Westernblot and ELISA. The effects of PAI 1 variation on VEGF were examined by immunofluorescence method. Results PAI 1 antigen was the lowest (0 017 ng/ml) in cells and the immunofluorescence representing the expression of VEGF in the cytoplasm showed the weakest at the third day after transfection. At the fifth day, PAI 1 antigen increased to 0 093 ng/ml with VEGF expression increased correspondingly. At the seventh day, PAI 1 antigen(0 143 ng/ml) and VEGF increased closed to normal level. Conclusions PAI 1 antisense RNA blocked the translation of PAI 1 proteins effectively and inhibited the expression of VEGF in aorta endothelial cells.

Objective:To clone interleukin 4 cDNA of Tibet pig.Methods:To amplify cDNA,using RT PCR from the total RNA from the lymphocyte stimulated by 10 ?g/ml Con A in vitro,to subclone into pMD T vector,and then to determine it by digesting and sequencing.Results:The cloned Tibet pig interleukin 4 was 98% homologus to the necleotide acids of Chenghua pig a special specie of pig in Sichuan province and 99% homologus to that of hybrid of Landrance with Chanbai pig.Conclusion:IL 4 of Tibet pig was successfully cloned from the lymphocyte after stimulating 70 h with ConA.

Objective To investigate effects of Tanshinone Ⅱ A (Tan Ⅱ) on proliferation and apoptosis of myeloblastic leukemia cell lines.Methods NB4,K562 and THP-1 cells were incubated with TanⅡA for 24,48 and 72 hours.Ddaunorubicin was used as a positive control.Cell proliferation was monitored by MTT assay.Cell apoptosis and cell cycle were determined by Annexin Ⅴ-FITC/PI flow cytometry.Expression of Caspase-3 was quantified by spectrophotometry.Results After incubation with various leukemia cells for 24,48 and 72 hours,Tan Ⅱ inhibited proliferation of NB4 cells with IC50 of 24.11,9.60 and 7.28 μmol/L,inhibited K562 cells with IC50 of 31.75,11.88 and 6.81 μmol/L and inhibited THP-1 cells with IC50 of 111.10,32.82 and 11.82,respectively.After treatment with Tan Ⅱ for 48 hours,cell apoptosis,the number of G1 phase cells and the expression of Caspase-3 in all three leukemia cell lines were increased significantly comparing with the blank control group (P ＜ 0.05).Conclusions Tan Ⅱ A has proliferation inhibitory effect on myeloblastic leukemia cell lines by the order of effect NB4＞K562＞THP-1.Tan ⅡA displays anti-leukemia activity possibly through arresting leukemia cells in G1 phase and inducing apoptosis by increasing Caspase-3 expression.

Objective To evaluate the surgical effects and influencing factors of ear malformation.Methods 408 cases were reviewed,including surgical methods and its effect in different condition of malformation,in which autogenous rib cartilage was used in reconstruction of ear.Meanwhile,349 cases(401 ears) double-lobe skin flap and 29 cases(29 ears) retroauricular groove flap were designed according to different condition of malformation.All the patients were treated with canalplasty,and 84 cases(84 ears) with mastoid process of pneumatic type were treated with tympanoplasty and canalplasty.Results months and more follow-up obtained in 335 cases (82%),and 6 months to 5 years follow-up in 273 cases(67%).Surgical effect was satisfactory,the shape of reconstructive ear was verisimilitude,and skull auricle angle was suitability;hearing was improved after operation in 335 ears,especially in 84 ears with canalplasty and tympanoplasty,but hearing was not improved after operation in 45 ears(

To compare the clinical effect of phacoemulsification and middle incision extracapsular cataract extraction ( Ml-ECCE) . METHODS: One hundred and eighty - five eyes of phacoemulsification (137 cases) and 185 eyes of 139 cases for Ml-ECCE from January 2011 to May 2013 were involved in this study. And the ratio posterior capsular rupture during surgery, visual acuity, corneal edema, corneal astigmatism and intraocular pressure post operation were followed up.RESULTS: On 1d after surgery, uncorrected visual acuity in the group of Ml-ECCE was better than that of phacoemulsification group, while from 3d; 1 and 3mo after surgery, no significant difference was found from the above two groups. On 1d postoperation, corneal edema ratio in phacoemulsification group ( 45 eyes ) was higher than that in Ml-ECCE group(20 eyes) ( X2=11. 665, P=0. 0006 ) . No significant difference was found for the ratio of posterior capsule rupture during surgery in these two surgical technique groups(X2=0. 094,P=0. 759). On 1wk;1 and 3mo after surgery, significant difference was found for the average of surgical induced corneal astigmatism between two groups (u=6. 661, 6. 880, 4. 187, P = 0. 00, respectively ). During following up, no significant difference was found for the intraocular pressure between two groups ( u=1. 858, 0. 963, 0. 471, 1. 349, 1. 388; P= 0. 063, 0. 335, 0. 638, 0. 177, 0. 165). lntraocular pressure on 1d postoperation in phacoemulsification and Ml-ECCE groups was higher than before operation ( u = 19. 86, 19. 39, P = 0. 00, respectively). And on 1wk; 1 and 3mo postoperation, intraocular pressure in the operated eyes in both groups was lower than before operation for 2~3mmHg.CONCLUSlON: Although phacoemulsification and Ml-ECCE could both get good visual rehabilitation, with similar visual outcome, no significant effect for intraocular pressure, and no severe complications, the latter one owns the advantage that easier maneuver, quicker recovery, and cheaper instruments needed, which is suitable for the hard nuclei cataract in local hospitals. Ml-ECCE is a safe, effective and easy manipulation for local hospital for large batch of cataract surgeries.

Microvesicles (MVs) are the heterogeneous mixtures of vesicles. MVs released by leukemia cells constitute an important part of the leukemia microenvironment. MVs might act as important reservoirs of microRNAs (miRNAs). It is worth evaluating whether MVs possess some unique miRNA contents that are valuable in understanding the pathogenesis. In this study, we investigated the miRNA expression patterns of Nalm-6-derived MVs, Jurkat-derived MVs and normal cell-derived MVs using miRNA microarrays. The potential target genes regulated by differentially expressed miRNAs were also predicted and analyzed. Results demonstrated that 182 miRNAs and 166 miRNAs were differentially expressed in Nalm-6-MVs and Jurkat-MVs, respectively. Many oncogenes, tumor suppressors and signal pathway genes were targeted by these aberrantly expressed miRNAs, which might contribute to the development of B-ALL or T-ALL. Our findings expanded the potential diagnostic markers of ALL and provided useful information for ALL pathogenesis.

Culturing objective and curriculum system for rural order directed free medical students were proposed scientifically and detail measure in designing general course module , basic course module, clinical course module, preventive care course module and professional practice module were put forward based on the analysis of guiding ideology of training rural order directed free medical educational talents.

Animals ; Body Weight ; drug effects ; Bone Remodeling ; drug effects ; Growth and Development ; drug effects ; physiology ; Isoflavones ; pharmacology ; Male ; Rats ; Rats, Sprague-Dawley ; Testosterone ; blood