objective In the former research work, a differential-expressed gene was cloned from multi-drug resistance lung cancer cell line (SPC-A-1/CDDP) with suppression substractive hybridization, and in this study we further analyze the site of this gene on the chromosome, and appraise its function related to multi-drug resistance in lung cancer cells. Methods The cDNA sequence data of the gene was input to computer and analyzed to ascertain its site on human chromosome by screening the gen bank on the www.ncbi.nlm.nih.gov. With DNA recombination technique, the gene was reversedly inserted to the vector pLXSN to get an antisense expression recombinant vector pLXSN-R, which was then transfected into SPC-A-1/CDDP cells with the aid of electroporation technique. And the semi-quantitative RT-PCR technique was used to quantify the mRNA content of gene in the transfected cells. Finally, the chemosensitivity of the transfected cells was tested with MTT method. Results The gene was located on the human chromosome 19q13.3-19q13.4 locus. The antisense gene recombinant vector was successfully constructed and transfected into SPC-A-1/CDDP cells as shown by its inhibitory activity on the mRNA expression of the gene. The drug-resistance indexes of transfected SPC-A-1/CDDP cells for cisplatin, doxorubicin, 5-fluorouracil, vincristin, hydroxycamptothecine and etoposide were obviously decreased. Conclusion The function of this gene is related to multi-drug resistance in human lung cancer cell, and its locus on the human chromosome is at 19q13.3-1913.4.

0.05). CONCLUSION: The effects of 10 mg?kg -1 m oxonidine on reduced blood pressure and heart rate in SHR is equal to the effect s of 1 mg?kg -1 clonidine after once large dose oral administration. T here is no significant difference between the moxonidine and clonidine of the sa me dose in reducing blood pressure after repeatedly small dose oral administrati on in SHR.

Objective To observe the changes of T lymphocyte subsets and natural killer (NK) cells in patients with late stage non-small cell lung cancer (NSCLC) before and after treatment with PD-1 inhibitor and its clinical effect.Methods Totally 23 patients with NSCLC in Guangzhou Modern Hospital from January 2015 to January 2016 were collected.All patients were given 6 cycles of PD-1 inhibitor treatment after chemotherapy or targeted drug treatment failure.Peripheral venous blood was collected before and after treatment to detect the percentage of CD3 +,CD4 +,CD8 + and NK cells in peripheral blood lymphocytes.The curative effects were evaluated by chest CT after treatment of 2,4,6 cycles.Results Compared with before treatment,the proportions of CD3+ (69.56％ ±7.81％ vs.63.91％ ±6.43％,t =2.679,P =0.005),CD4+ (39.01％ ±4.98％ vs.36.09％ ±4.77％,t =2.031,P =0.024) and CD4+/CD8+ (1.82 ±0.48 vs.1.49 ± 0.32,t =2.743,P =0.004) were increased after treatment,with significant differences.While compared with before treatment,the proportions of CD8 + (24.08％ ± 5.13％ vs.26.04％ ± 6.44％,t =1.142,P =0.130) and NK cells (22.68 ％ ± 9.56％ vs.21.45 ％ ± 10.01％,t =0.426,P =0.337) had little changes,with no significant differences.There were 3 patients with complete remission,10 patients with partial remission,8 patients with stable disease and 2 patients with progressive disease when completing 6 cycles of PD-1 inhibitor treatment.Ten patients showed untoward effects such as mild sleepiness,thirst,tussis,pruritus and rash,and they were well tolerable.Conclusion PD-1 inhibitor can improve the patient's cellular immune function,and can achieve a more satisfactory short-term efficacy and acceptable adverse reactions,which maybe bring new hopes for patients with NSCLC.

Objective To analyzed distribution characteristics of gene mutation and gene carrying rate of thalassaemia in Shenzhen.Methods 2 500 cases with adult,neonatal umbilical cord blood of 2 500 cases for alpha thalassaemia,beta thalas-saemia,gene types and carry frequency were analyzed.Results 8 types of alpha thalassemia gene 128 cases,rate of detection was 5.12% (128/2 500),and the main genetic types were-SEA/αα(54 cases,42.19%),-SEA/-α3.7 (32 cases,25%)respec-tively.2 500 cases of adult samples were checked out 7 types of gene mutation 101 cases,and detection rate was 4.04%(101/2 500).Main gene mutation type were CD41-42 (39 cases,38.61%),IVS-2-654 (20,21 cases,79%),CD17 (18 cases, 17.82%)and-28 (13 cases,12.87%)respectively.Conclusion Shenzhen thalassaemia mutation type and frequency had ob-vious regional characteristics and times characteristics,health authorities should strengthen epidemiology study,formulate corresponding prevention and intervention measures.

Objective To investigate the influence of tiotropium bromide on lung function index,quality of life and re-hospitalization risk of patients with bronchial dilation and pulmonary infection.Methods 100 patients with bronchiectasis and lung infection were chosen,and they were randomly divided into control group (50 patients) with BAL used alone and observation group(50 patients) with tiotropium bromide on the basis of control group.The short-term clinical effects,the levels of FVC,FEV1 and FEV1 ％,BODE index scores and QLI scores before and after treatment,and re-hospitalization rate of the two groups were compared.Results The short-term effective rate of the observation group was significantly higher than that of the control group(94.00％ vs.76.00％,x2 =7.81,P ＜ 0.05).The levels of FVC,FEV1 and FEV1％ after treatment of both two groups were significantly higherthan before treatment[(2.78 ±0.57)L vs.(2.15 ± 0.33) L,(3.60 ± 0.71) L vs.(2.20 ± 0.36) L;(2.15 ± 0.42)L vs.(1.23 ±0.32)L,(2.77±0.59)L vs.(1.17 ±0.29)L;(65.25 ±11.45)％ vs.(51.79 ±9.23)％,(77.46 ±15.80) ％ vs.(52.02 ± 9.36) ％,t =2.34,2.97;2.52,3.07;2.47,3.12,all P ＜ 0.05].After treatment,the levels of FVC,FEV1 and FEV1 ％ of the observation group were significantly higher than control group [(3.60 ± 0.71) L vs.(2.78 ±0.57)L;(2.77 ±0.59)L vs.(2.15 ±0.42)L;(77.46±15.80)％ vs.(65.25 ± 11.45)％,t =2.26,2.44,2.30,all P ＜0.05].The QLI score and BODE index scores after treatment of both two groups were significantly better than before treatment[(3.37 ± 0.54) points vs.(3.95 ± 0.65) points,(2.11 ± 0.40) points vs.(3.87 ±0.61)points,(7.28 ±1.18)points vs.(5.04 ± 0.95) points,(8.69 ± 1.54) points vs.(5.13 ±0.98) points,t =2.29,2.81;2.50,2.96,all P ＜ 0.05].After treatment,the QLI score and BODE index scores of the observation group were significantly better than the control group[(2.11 ±0.40) points vs.(3.37 ±0.54) points,(8.69 ± 1.54) points vs.(7.28 ± 1.18)points,t =2.21,2.44,all P ＜ 0.05].The re-hospitalization rate of the observation group was significantly lower than that of the control group (16.00％ vs.2.00％;28.00％ vs.6.00％;x2 =8.02,9.74,all P ＜ 0.05).Conclusion Selective cholinergic receptor blocker combined with BAL in the treatment of patients with bronchial dilation and pulmonary infection can efficiently relieve the respiratory symptoms,improve lung function,improve the quality of life and is helpful to avoid re-hospitalization occurrence.

Objective To explore the effects of amisulpride on the cognitive function in first-episode schizophrenia patients.Methods 64 patients in first-episode schizophrenia were divided into two groups randomly according to the method of tossing a coin,then treated with amisulpride or risperidone respectively for 12 weeks.The efficacy and adverse effect were evaluated with positive and negative scale (PANSS) and treatment emergent side effect scale (TESS) before treatment and after treatment for 2 weeks,4 weeks,8 weeks,12 weeks.Before and after treatment for 12 weeks,cognitive function of all the patients was blindly evaluated with Wechsler Scale-revised China (WMS-RC),Wisconsin Card Sorting Test(WCST) and Trail Making test A and B.Results After 12-week treatment,statistical difference was found in amisulpride(44.7 ± 6.7) and risperidone (45.2 ± 7.4) groups (P ＜ 0.01).But no statistical difference was found between the two groups (P ＞ 0.05).The cognitive function in firstepisode schizophrenia was damaged obviously.In two groups,the scores in recognize,association,comprehend,back a few and MQ of WMS and TAT-A,TAT-B were improved significantly after treatment for 12 weeks (P ＞ 0.05).These items of WCST were improved more remarkably than baseline (amisulpride (20.63 ± 13.06),(28.75 ± 15.72),(43.17 ±22.13),(3.62 ±2.21),P＜0.05; risperidone(20.41 ±13.82),(29.31 ± 16.12),(42.78 ± 21.42),(3.67 ± 2.32),P ＜ 0.05).The improvement in the scores of WCST were statistical difference compared with control group(P ＜ 0.05).But statistical difference was no found between the two groups (P ＞ 0.05).Conclusion The study shows that the cognitive dysfunction in first-episode schizophrenia can be improved by amisulpride,and the efficacy was similar with risperidone.

Objective To explore the effect of nicotine on rats callus content and maturity in the process of fracture healing.Methods Sixty male Sprague-Dawley rats were randomly divided into model group,mild nicotine group and severe nicotine group (n =20/each group).The 3-mm bone defects fracture models were made in the junction of the lower 1/3 of the rat left radial.Five rats of each group were sacrificed randomly in the 3,7,14,21 days after surgery,respectively.The left radial were collected as the observed object.The callus thickness and maturity of the specimens were detected by HE staining.Results At the 3rd days after modeling,the difference in specimens callus thickness between each treatment group and the model group was not statistically significant (P ＞ 0.05),no difference in the maturity of the callus under the microscope; callus thickness in mild and severe nicotine groups and model group was (1.59 ± 0.09) mm,(1.43 ± 0.12) mm,(1.39 ± 0.09) mm at the 7th day after modeling,(1.98 ± 0.12) mm,(1.78 ± 0.08)mm and (1.68 ± 0.09) mm at the 14th day after modeling,and (2.39 ± 0.09) mm,(1.93 ± 0.11) mm,(1.89 ± 0.09) mm at the 21 st day after modeling; The difference of callus thickness in specimens between each treatment group and the model group had statistical significance (P ＜ 0.05,P ＜0.01),callus thickness and maturity of the treatment group were lower than that in the model group.Conclusions Nicotine affects the proliferation and differentiation of callus,reduces callus formation,inhibits maturity transformation of bone,and delays the healing process of fracture.

Objective:To observe the expression of connective tissue growth factor(CTGF) and its receptor-low density lipoprotein receptor-related protein (LRP), and the relevant signaling pathway for the regulation by long-term high glucose exposure in cultured podocytes. Methods:The effects of high glucose on the expression of CTGF and its receptor LRP were analyzed by western blotting. The activation of mitogen activated protein kinase ( MAPKS )signaling pathway by high glucose was also examined. Results: Basal levels of CTGF were observed in cultured mouse podocytes, the levels of CTGF protein were increased by high glucose medium groups on the 2nd day, reached the peak on the 4th day(P0.05).The levels of CTGF expression in normal glucose and mannitol glucose groups did not change markly. High glucose medium induced phosphorylation of ERK_ 1/2 at as early as minute 30, reached the peak at hour 6; maintained the activity at hours 12 and 24, and declined to the basal level at hour 48. However, phosphorylation of ERK_ 1/2 was not detected in normal glucose and mannitol glucose groups. Blockade of phosphorylation of ERK_ 1/2 with PD98059, a specific ERK_ 1/2 activation inhibitior, did decrease the high glucose-triggered expression of CTGF protein in 4 days. High glucose had no effect on the expression of LRP protein at each time point. Conclusion: Acute high glucose (2-4 days)stimulated the expression of CTGF protein via ERK_ 1/2-dependent signaling pathway in cultured podocytes, while cultured in high glucose for 6-8 days, the podocytes did not increase its CTGF level. Long-term high glucose had no effect on the expression of LRP in podocytes.

Objective To observe the effect of psoralen on the proliferation of osteoblasts induced by alcohol, thus to explore the mechanism of psoralen in preventing and treating alcohol-induced osteoporosis. Methods The osteoblasts separated from neonatal rat skull were identified by alkaline phosphatase (ALP) staining method. The in-vitro confirmed osteoblasts were randomly divided into 4 groups, namely blank control group, alcohol group (model group), psoralen group, and psoralen plus alcohol group. The alcohol-induced osteoblast proliferation in various groups was determined by methyl thiazolyl tetrazolium (MTT) method. Results Compared with the blank control group, the alcohol-induced osteoblast proliferation at culturing hour 24, 48, 72, 96 in alcoholgroup was significantly decreased (P<0.05), and the proliferation in psoralen group at various time points only showed an increasing trend, the differences being statistically insignificant (P>0.05). Compared with the alcohol group, osteoblast proliferation at culturing hour 24 in psoralen plus alcohol group was significantly increased (P <0.05) , but the differences of osteoblast proliferation at culturing hour 48, 72, 96 h between the two groups were insignificant (P > 0.05). Conclusion Psoralen has certain effect on promoting alcohol-induced osteoblast proliferation in vitro.

Objective To analyze the abnormal region of gray matter and its distribution characteristics in Parkinson's disease (PD) patients with mild cognitive impairment (PD-MCI),and to investigate the structural brain changes which closely related to mild cognitive impairment.Methods 27 PD patients were examined by T1WI three-dimensional brain volume (3D-fast spoiled gradient echo,3D-FSPGR) sequence,and were divided into 2 groups:PD patients with mild cognitive impairment group (PD-MCI group,n＝15) and PD patients without mild cognitive impairment (PD-nMCI group,n=12).Gray matter map in the two groups were analyzed by using voxel based morphometry (VBM) based on SPM5.Results There were significant differences in MMSE and MoCA scores between the two groups (P＜0.01 or 0.05).Compared with PD-nMCI group,gray matter volumes in PD-MCI group were decreased in bilateral mid frontal gyrus,left precentral gyrus,right mid-temporal gyrus,left superior temporal gyrus,transverse temporal gyrus,bilateral lingual gyrus,right cuneus,bilateral insular and right posterior cingutate gyrus.Conclusions Gray matter atrophy in bilateral mid-frontal gyrus,insular and left precentral gyrus is closely related to the mild cognitive impairment in PD patients.