Cell polarity is a common feature of many different types of cells,and it is essential to the normal differentiation and function of cells. Partitioning defective 6( PAR6)gene encodes PAR6 protein, which is crucial to asymmetric cell division and polarized growth. PAR6 protein as a member of the PAR6 polarity complex,affects the synthetic of centrosome and protein recruitment to the centrosome. The abnormal number of centrosomal and the loss of cell polarity may eventually lead to the occurrence of tumor.

Objective To study the correlation between dopamine and glutamate receptor NMDA NR_1 and NMDA NR_(2A),and to share the understanding of the mechanism of dopamine in the synaptic complex of inner hair cells.Methods Forty guinea pigs were divided randomly into four groups and the whole intacochlear perfusions were performed.The perfused cochleas were taken out as preparations 2 hours after perfusing,the contralateral cochleas were also taken out as the normal control group in the group perfused with artifical perilymph solutions.All the preparations were divided into 5 groups:①normal control cochleas;②perfused with artificial perilymph solutions;③perfused with artifical perilymph solutions containing 10 mmol/L dopamine；④perfused with artificial perilymph so lutions containing 30 mmol/L dopamine；⑤perfused with artifical perilymph solutions containing 50 mmol/L dopa mine.The semi-quantitive RT-PCR was used to observe the difference in the amount of glutamate receptor NMDA NR_1、NMDA NR_(2A).Results Dopamine inhibited the compound action potential(CAP),the increase of CAP threshold was observed and correlated with the contentration of dopamine in the perfusion solution.Regarding the amount of glutamate receptor NMDA NR_1 mRNA,there was no significant difference between group ① and group ② (P＞0.05).But a significant difference was observed the other 3 groups when compared to group ①(P＜0.05).No significant difference was detected among the 5 groups in the amount of glutamate receptor NMDA NR_(2A) (P＞0.05).Conclusion Dopamine may inhibit the cochlear auditory afferent nerve.The significant correlation between dopamine and glutamate receptor NMDA NR_1 was observed,the amount of glutamate receptor NMDA NR_1 decreased along with the increasing of the contentration of dopamine in the perfusion solution.And there was no significant correlation between dopamine and glutamate receptor NMDA NR_(2A).

Though the mechanisms involved in the induction of pancreatic islet β cell dysfunction and apoptosis under diabetes conditions are still not clear, previous studies have shown that triggered or aggravated endoplasmic reticulum stress and oxidative stress play essential roles in impairment of β cell functions, especially the JNK pathway which can be activated by both of them.

Objective To explore the clinical effect of laparoscopy combined with choledochoscopy on choledocholithiasis.Methods Totally 134 elderly patients with choledocholithiasis were treated in our hospital from Jan 2013 to Dec 2014, who were randomly divided into observation group and control group (n=67 for each), treated with laparoscopy combined with choledochoscopy, and traditional surgery, respectively.The operation time, bleeding volume, exhaust time, in-hospital stay, complications and residual stones rate were compared between the two groups.Results The operation time was higher in observation group than in control group [(124.6±21.2) min vs.(94.7± 17.9) min, t=8.821, P＜0.001].The bleeding volume were less in observation group than in control group[(43.8±10.4) ml vs.(113.5±37.6) ml, t=14.624, P＜0.001].The exhaust time and in hospital time were decreased in observation group than in control group[(27.6 ±5.5) h vs.(43.4±8.1) h, (7.4±2.4) d vs.(10.3±2.8) d, t=13.209 and 6.437, P＜0.001 for both].The incidences of postoperative pain and other complications were lower in observation group than in control group [6.0％ vs.28.4％, 16.4％ vs.43.3％, x2=11.810and 11.547, P=0.001 for all].Conclusions The laparoscopy combined with choledochoscopy has advantages to minimize the surgical injury, reduce the bleeding volume and promote the postoperative recovery in treating choledocholithiasis in elderly patients.

Objective To evaluate the efficacy of internal fixation with or without fusion in the treatment of thoracolumbar burst fractures.Methods Clinical controlled trails related to the application of pedicle screw instrumentation with or without fusion for thoracolumbar fractures before March,2012were obtained by searching PubMed,Science Direct,Medline and CNKI.Quality evaluation was made on the included literature,from which data were extracted to integrate various rescarch results by using RevMan 5.1.The quantitative data were analyzed based on the effect scale of mean difference (MD) and bilateral 95％ confidence interval (CI).The numeration data were analyzed in the use of effect scale of odds ratio (OR) and bilateral 95％ CI.The merging of some data was manually completed.Results After retrieving,eight English and one Chinese papers of the clinical controlled trials,and two related Meta analysis were obtained.With exclusion of one repetitive research,eight papers were involved in the review.Meta analysis demonstrated that fusion and non-fusion fixation had no significant differences in aspects of correction of kyphotic angle,correction and correction loss of vertebral body height,neurological function improvement,complication rate,and length of hospital stay.While compared with the fusion fixation,non-fusion fixation showed a more serious correction loss of kyphotic angle,a fewer blood loss and a shorter operation time.Conclusions Non-fusion fixation shows the similar efficacy with fusion fixation in the treatment of some thoracolumbar burst fractures pertaining to releasing compression,restoring spinal stability and preventing complications,but it can also significantly decrease operation time and blood loss.Furthermore,non-fusion fixation may markedly improve patients' quality of life since it restores motion of the instrumented segment after removal of implant and decreases the risk of adjacent segmental degeneration.

Objective To investigate the change of CD_4~+CD_(25)~(high)CD_(127)~(low)> regulatory T cells (Trcg cells) sub-group level in peripheral blood of non-Hodgkin lymphama (NHL) patients, and to explore its clinical significance. Methods Treg cells levels in peripheral blood of lymphoma patients and normal were detected by flow cytometry, followed by statistical analysis. Results In the 65 cases of NHL patients, Treg cells in peripheral blood were (6.72±1.38) %, higher than that in the normal control group (5.65±0.68) % (P <0.05). Percentage of Treg cells are significantly different between clinical stages and normal: [P <0.05, normal control group (5.65±0.88) %, Ⅰ -Ⅱ period (6.08±1.18) %, Ⅲ-Ⅳ period (6.95±0.85) %]. The percentage of Treg cells are also different among pathological types of patients and normal [P <0.05, normal control group (5.65± 0.68) %. The percentage of Treg diffuse large B-cell lymphoma (5.83±0.95) % and other subtypes of lymphoma (7.83±1.76) %]were observed. It is not sure that Treg cells percentage among patients with different levels of lactate dehydrogenase and normal are significantly different. [P >0.05, normal control group (5.65±0.68) %, patients with normal LDH group (6.97±1.20) %, patients with lactate dehydrogenase (6.54±1.02) %]. Conclusion Treg cells induced by tumor and could inhibit the immune cells, Treg cells percentage in peripheral blood of tumor patients is higher than that the normal control group, and increased with the clinical staging, so the percentage of Treg cells may serve as a clinical indicator to evaluate tumor load.

BACKGROUND:Early-onset scoliosis is a kind of disease that seriously affects the growth of children’s spine and development of cardiorespiratory function. The treatment of the disease has always been the focus of many clinical researchers.OBJECTIVE:To analyze the therapy for early-onset scoliosis and explore the spinal fusion, spinal non-fusion, conventional growth rod technology and magnetic control ed growth rod technology of early-onset scoliosis. METHODS:We retrieved PubMed, CENTRAL, EMbase, the ISI Web of Knowledge Databases, VIP, CNKI, CBM and Wanfang Database for related studies published from inception of the database to March 2016. The key words were“scoliosis, growing rod, complications”. The included 54 studies were analyzed and discussed. RESULTS AND CONCLUSION:For these children of early-onset scoliosis, we should not only maintain the correction of spine deformities, but also protect the ability of spine growth, keeping the normal cardiopulmonary function. In addition to conventional (non-surgical) treatment, there are surgical treatment (such as spinal fusion and growing rod technique) and magnetical y control ed growing rod, a new technology for the treatment of early-onset scoliosis. A comprehensive understanding of the effect of surgical treatment on the spine growth and cardiopulmonary function of children with early-onset scoliosis wil help to prevent the occurrence of related complications, so as to obtain a better therapeutic effect.

Objective:To observe the adverse reactions of killer cytokine-induced (CIK) in the treatment of malignant tumor and to analyze the possible mechanism ,and to develop the targeted prevention and treatment measures .Methods: The clinical data, including various adverse reactions , laboratory tests and the corresponding preventive measures against adverse reactions .In 1 240 patients with malignant tumor after treated with CIK cells from May 2013 to September 2015 were retrospectively analyzed .Results:The main adverse reactions after the first infusion of CIK cells were weak (10%),fever(7.25%),shiver (4%),arthralgia (3%),systemic in flammatory response syndrome reaction ( 3%) , digestive tract discomfort ( 0.96%) , acute allergic reaction ( 0.08%) , rash (0.08%),angina pectoris (0.08%),tumor lysis syndrome(0%),infection(0%).With the increase of the treatment ,the incidence of adverse reactions increased and the fever was the main performance ,after the fourth course into the platform .The combination of blood pressure increased or decreased and severe allergic reaction and systemic inflammatory response syndrome was needed to be treated .The CIK cells were pretreated before treatment could reduce the incidence of these reactions .Conclusion:CIK cells therapy is a safe and effective adoptive immunotherapy for malignant tumor and its adverse reactions can be treated expectantly , but rare adverse reactions may have potential risks .

Purpose To investigate the expression of programmed death ligand-1 (PD-L1) in breast cancer tumor cells and stromal tumor-infiltrating lymphocyte (sTIL),and to study the relationship between the expression of PD-L1 and the clinicopathological characteristics of the patients.Method The protein expression of PD-L1 was detected by immunohistochemistry of EliVision two-step method in 68 cases of non special type of invasive breast cancer,and the relationship between the expression of PD-L1 protein and the immunohistochemistry subtypes and clinical parameters was analyzed.Results The total expression rate of PD-L1 was 35.3％ in breast tumor tissue,specially in triple negative breast cancer (TNBC) which occupy the highest positive rate.The expression rates of PD-L1 in tumor tissue of the luminal subtype,HER-2 over-expression subtype and TNBC subtype were 16.1％,37.5％ and 61.9％ respectively,and the difference was statistically significant.The total expression rate of PD-L1 in sTIL was 51.5％,and the highest expression rate was 81.0％ in TNBC.There were significant differences of PD-L1 expression in sTIL of the luminal subtype,HER-2 over-expression subtype and TNBC subtype.Expression of PD-L1 in tumor tissue and sTIL had a significant positive correlation.Conclusion PD-L1 expressed in TNBC was significantly higher than other types of breast cancer,which suggest the blocking of signal pathway of PD-1/PD-L1 may expected to become a new immunotherapy for breast cancer,especially for TNBC subtype.