Acute lung injury(ALI)/acute respiratory distress syndrome(ARDS)is one of the most common clinical critical illnesses in ICU.The basic pathological features of this disease are uncontrolled inflammation, destruction of the alveolar-capillary barrier and diffuse alveolar and interstitial edema.In severe cases, patients may develop significant pulmonary fibrosis.Based on the pathological changes, repairing damaged alveolar-capillary membrane and reducing fibrosis seem to be the key to the treatments of ALI/ARDS.Vascular endothelial growth factor(VEGF) is known to be the main regulator of endothelial cell proliferation and differentiation.Previous studies have suggested that VEGF plays an important role in the inflammatory reactions and pathological manifestations of ALI/ARDS, but the results are complex.This review mainly focused on the expression changes of VEGF in ALI/ ARDS and the effects and mechanisms of regulating VEGF signaling.

Objective: To investigate the role and mechanism of histamine in regulation of C57BL/6 mice spleen derived LAK activity in vivo. Methods: The C57BL/6 mice carrying B16 pulmonary metastatic melanoma were treated with LAK/IL 2/histamine therapy or LAK/IL 2 therapy with the aim of evaluating both anti tumor responses in vivo. Results: It was found that the addition of histamine effectively potentiated the anti metastatic effect produced by LAK/IL 2 therapy and induced regression of NK resistant B16 pulmonary metastatic melanoma. Survival period was significantly prolonged in mice receiving LAK/IL 2/histamine as compared with LAK/IL 2 therapy alone. The effect of histamine was completely blocked by H 2 R antagonist ranitidine, and mimicked by dimaprit, a H 2 R agonist. Conclusion:Histamine, via specific activation of H 2 R, may be an important regulator of LAK cells activity; histamine and LAK/IL 2 synergistically induce more potent antitumor efficacy in vivo .

BACKGROUND: Key point for subculture of human embryonic stem cells (hESCs) is to inhibit spontaneous differentiation and make sure totipotency of cells. Although mouse embryonic fibroblasts (MEF) or human foreskin fibroblasts (HFF) used as the feeder layer can maintain undifferentiated state of embryonic stem cells, cell clone is still imperfect and parallel arranged. OBJECTIVE: To establish mixed feeder layer of mouse embryonic fibroblasts plus human foreskin fibroblasts and to observe the hESCs growth.DESIGN: Multi-sample observation and comparison.SETTING: Medical Center of Reproduction, the Affiliated Hospital of Hainan Medical College. MATERIALS: This study was performed at the Medical Center of Reproduction, the Affiliated Hospital of Hainan Medical College from April 2006 to July 2007. Foreskin was derived from the children who underwent circumcision and came from Urinary Surgery, the Affiliated Hospital of Haihan Medical College. The children's family members provided the informed consent, and the experiment received confirmed consent from the local ethic committee. hESCs line HN-1 was separated from human blastula. Eleven 12.5-14.5-day-old fetal mice of clean grade were selected in this study. The experimental animals were disposed according to ethical criteria. METHODS: Heads, four extremities, and viscera were removed from fetal mice under anesthesia. Subsequently, cell suspension was prepared using routine trypsinase digestion and inoculated. When cells were cultured in confluent monolayer, some primary cells were frozen, processed with mitocin-C for 2.0-3.0 hours, and inoculated based on the density of 1×108 L-1 in gelatin-coated dish, I.e., MEF feeder layer. The HFF separation and culture and the preparation of HFF feeder layer were the same as above-mentioned processing. In addition, the two fibroblasts were respectively counted and mixed together according to the ratios of 1∶0, 3∶1, 1∶1, 1∶3, and 0:1. And then, the mixture was inoculated based on the density of 1×108 L-1 in gelatin-coated dish, I.e., mixed feeder layer. The growth of subcultured hESCs in vitro was observed in three different feeder layers, and hESCs in the mixed feeder layer underwent alkaline phosphatase test, OCT-4 expression immunohistochemical measurement, and OCT-4 and telomerase mRNA expression RT-PCR detection. Finally, differentiation in vitro of hESCs was observed after removing the feeder layer.MAIN OUTCOME MEASURES: ① Growth of hESCs in the three different feeder layers; ② Growth of hESCs in the mixed feeder layer based on different mixed ratios; ③ undifferentiated state of hESCs in the mixed feeder layer; ④ differentiation in vitro.RESULTS: ① hESCs clone in the MEF and HFF feeder layers was thin and flat and imperfect, but hESCs clone in the mixed feeder layer was perfect and thick and solid. Apparently, the clone form in the mixed feeder layer was superior to MEF and HFF feeder layers. ② When MEF and HFF was mixed together according to the ratio of 1∶1, hESCs grew in apparent accumulation; clone border was clear; eminentia was apparent and perfect. However, there were no changes according to the ratio of 1∶3. The ratio of 1∶1 was superior to the ratios of 1∶0, 3∶1, and 0∶1. ③ Alkaline phosphatase staining and OCT-4 antigen expression were strongly positive. Specific straps of OCT-4 and telomerase mRNA expression were observed at 200-300 bp and 300-400 bp, respectively. ④ Embryoid bodies were formed. hESCs could differentiate into multi-morphological cells after attachment.CONCLUSION: ① The mixed feeder layer may well support in vitro subculture of hESCs to acquire excellent clone form compared to MEF or HFF feeder layer. ② The mixture of MEF and HFF has excellent effect according to the ratio of 1∶1.

[Objective]To evaluate the role of mature cumulus cells from oocyte-cumulus complex(OCC)in in-vitro maturation(IVM)and establish a new culture technique which is convenient to carry out.[Methods]The cumulus cells of OCC were cut off and dispersed by 1 mL syringe.The cumulus cells were co-cultured with the immature oocytes retrieved from the COH cycles after they adherent to the bottom of the dish.The immature oocytes were experienced IVM procedures in different culture media.They were divided into 3 groups(the oocytes at germinal vesicle stage from one woman were allotted to the same group randomly).Group 1(solution A):basic culture medium+human follicular fluid(hFF);Group 2(solution B):solution A+ cumulus cells(OCC);Group 3(solution C):solution A+ OCC+ follicle stimulating hormone(FSH)+ epidermal growth factor (EGF).Then,the maturation rate,fertilization rate and formation rate of available embryo were observed.[Results]In 113 treatment cycles,298 immature oocytes were performed IVM with solution A,B,and C.The difference for 24 hour maturation rates among 3 groups wag statistically significant(A:45.2%,B:61.7%,C:78.2%,P＜0.05).There was no statistical difference for 25～48 hour maturation rates and normal fertilization rates of mature oocytes.The differences of cleavage rates and rescued embryo rates between group 1 and 2,group 1 and 3 were statistically significant(P＜0.05).The formation rates of available embryo showed an increasing trend from group 1,2,to 3.[Conclusion]After being dispersed by simply beat upon with syringe and adherent culture,the mature cumulus eells from mature OCCs in COH cycles,together with growth factors in the follicular fluid or extraneously supplemented,could promote the IVM of immature oocyte.

Objective: To examine the expression of glucocorticoid receptor in human colon cancinoma tis-sues and call lines and to explore the survival of colon cancer cell lines treated with dexamethasone alone or in combination with 5-Fu and L-OHP in a way of dexamethasone pretreatment or co-administration in vitro.Methods: The expression of glucocorticoid receptor was detected in 61 cases of colon cancer tissue samples and 4 types of colon cancer cell lines by immunohistochemistry. Apoptosis was detected by Hoechst33342 staining and flow cytometry. MTT assay was employed to detect the chemosensitivity of colon carcinoma cells to L-OHP and 5-Fu with dexamethasone pretreatment for 24 hours or co-administretion. Results: Positive GR expression was found in 57.3% colon cancer tissue samples and in Lovo and HCT-116 cell lines, not in HT-29 and SW-480. Apoptosis was detected in GR-expressed Lovo and HCT-116 cells at 72 hours after 1×10~(-4)mol/L Dex treatment, and the rates of apoptosis were higher than those in the control groups without Dex (P<0.01),GR-negative cells, HT-29 and SW-480 even treated with 1 × 10~(-4)mol/L Dex for 72 hours. Pretreatment and co-administration for Lovo cells with 1×10~(-4)mol/L Dex could decrease the IC50 of L-OHP from 13.7±1:1.3μg/mL to 5.9±0.6μg/mL and 4.8±0.7μg/mL, respectively. IC50 of 5-Fu was decreased from 72.2±8.1 μg/mL to 21.1±4.1μg/mL and 18.6±4.0μg/mL, respectively. Conclusion: There is expression of glucocorticoid receptor in part of colon carcinoma tissue samples and cell lines. Apoptosis does occur in GR-expressed Lovo and HCT-116 cells induced by dexamethasone in vitro. Pretreatment for 24h and co-administration with Dex can increase the chemosensitivity of Lovo cells to L-OHP and 5-Fu.

Objective To construct Neuropilins-2 eukaryotic expression vector for RNA interference.Methods Recombinant targeting on gene NRP2 was designed and established with plasmid pGenSil-1 based on NRP2 cDNA equences of Genomes.Two pairs of oligonucleotides were synthesized according to the Tuschl and inserted into plasmid pGenSil-l to generate siRNA eukaryotic expression vector,DH5? strains were transformed,plasmid were extracted,and recombinant vectors were identified by the restriction map and the sequence analysis.The recombinant plasmid(pGenSil-NRP2) was transfected into the cultured LOVO cells.At 48 h after transfection,the whole cell protein was extracted,and the protein level was detected by Western blotting with mouse-anti-human NRP2 monoclonal antibody.Results Recombinant plasmids were completely coincided with the designs by the restriction map and the sequence analysis.pGenSil-NRP2 expression vector into LOVO cells down-regulated the protein level of NRP2 at 48 h after transfection.The recombinant eukaryotic expression vector were constructed successfully.Conclusion siRNA recombinant can be constructed successfully by RNAi technique for inhibiting NRP2 expression.

Objective To investigate the connection between sex hormones and gender differences and cognitive func-tion in patients with schizophrenia. Methods A total of 80 eligible patients including 60 female and 20 male with schizophrenia conducted general information collection and Digit Span Task(DST) and Trial Making Test (TMT) mea-surement. The data o f the schizophrenic patients were collected and analyzed with sex hormones. Results There were significant differences between male and female schizophrenic patients in the age of first onset, course of disease,degree of education and antipsychotic treatment effects(P<0.05). The digit span-forward Task(DSF) score of female patients was higher than that of male patients, TMTA and TMTB were lower than those of male patients (P<0.05). In both male and female schizophrenic patients, E2 level was positively related to the age of first onset, and degree of education, oth-erwise,it was negatively related to the course of disease and antipsychotic treatment effects. In male patients,there was no connection between T level and the age of first onset, course of disease,degree of education and antipsychotic treat-ment effects. The estrogen level of male and female patients was positively correlated with the DSF and was negatively related to the TMTA and TMTB. The testosterone level of male patients was negatively correlated with the TMTand TMTB. Conclusion Estrogen may be related to gender differences in schizophrenia. Estrogen and testosterone have a certain correlation with cognitive function.

Objective To investigate the clinical application of laparoscopic adhesiolysis and efficacy of adhesive ileus. Methods In our hospital adhesive ileus patients from January 2011 to December 2013 were treated 100 cases, all pa-tients had abdominal surgery, all patients were divided according to the different ways laparoscopic surgery group and open surgery group, operative time, blood loss, postoperative recovery time to flatus, ambulation and hospital days were compared between two groups. Results The two groups were not significantly different except for operative time(P>0.05) outside the laparoscopic surgery group blood loss, the amount of postoperative analgesics, postoperative dis-charge time, ambulation and hospital stay were significantly less than open surgery group (P<0.05);and laparoscopic surgery and postoperative complication rate was significantly less than the obstruction again open surgery group (P<0.05). Conclusion Laparoscopic treatment of intestinal obstruction in patients with safe, effective, feasible and low recur-rence rate,worthy of promotion.

Condyle is a critical growth region of the mandible where mandible by endochondral ossification occurs. Condylar cartilage belongs to the secondary cartilage, which is not only affected by genetic factors but also by stress, drug intake, and other local factors. To promote the growth of the mandible, various exogenous and local factors were used to alter the biological environment of the condylar cartilage to stimulate endochondral ossification. This article reviews studies on the influence of exogenous factors on condylar growth and reconstruction. This literature review will provide a reference point for the treatment of patients with mandibular retraction.

Peritoneal dialysis is the most common form of renal replacement therapy in neonates.Due to its technical simplicity and compliance with neonatal physiological characteristics, peritoneal dialysis, especially acute peritoneal dialysis(APD), has been paid increasing attention in clinical practice in recent years.APD in neonates can be effective in treating critical diseases such as renal failure and metabolic disturbances.Despite the increasingly extensive application of APD, existing clinical practice shows a relatively high rate of complications and mortality in APD neonates.In this article, the application, prognosis and related factors of APD in neonates were reviewed.