Objective To explore the characteristics of community empty-nesters sleep quality and psychological defense mechanism,and the correlation between them.Methods 230 empty-nest elderly and 181 nonempty nesters were assessed with Pittsburgh sleep quality index (PSQI) and Defense style questionnaire (DSQ).Results PSQI score of empty-nest ehlerly was (14.33±2.48),higher than that of non-empty nesters(t=17.857,P＜0.01).Factor score of immature psychological defense style in DSQ was (3.92± 1.20),for the mediate defense style was (4.49± 1.11),for the wrapping factor was (3.38± 1.92).All of them were higher than the scores for nonempty nesters,and the differences were statistically significant (t=4.463,6.937,5.404,P＜0.01).Factor score for mature psychological defense style in DSQ was (3.96±1.45),and lower than the score for non-empty nesters(t=7.472,P＜0.01).hnmature defense mechanism of empty-nest elderly was positively related with subjective sleep quality,sleep continuity,sleep disorders,using sleep medicine,dysfunction in the daytime,and the total score in PSQ1 (r=0.533,0.145,0.605,0.521,0.497,0.734).Mature defense mechanism was negative related with sleep latency,sleep continuity,and the total score in PSQI (r=-0.129,-0.542,-0.104).The mediate defense meehanism was positively related with subjective sleep quality,sleep latency and the total score in PSQI (r=0.186,0.294,0.131),while negative related with sleep efficiency(r=-0.188).The wrapping factor had a positive correlation with subjective sleep quality,using sleep medicine and the total score in PSQI (r=0.440,0.431,0.564).Conclusion Empty-nesters tend to adopt immature defense styles,and most of them have a poor sleeping,which are closely related with each other.

Objective To evaluate the reason of the complications after treating by the intermaxillary traction with the titanium screw and put forward the measures of prevention these complications in mandibular fractures.MethodsOne hundred and twenty-six cases with mandibular underwent intermaxillary traction and fixation with tapping titanium screw were observed and counted for their complications in 1-30 days after finishing the operation.Summarized and analyzed the reasons of the complications.ResultsThe rate of complications was 9.52％(12/126),4 cases of titanium screw loosen,2 cases of bad occlusion,1 case of titanium screw fallen off,1 case of titanium screw around infected,1 case of root tip damage,1 case of titanium screw maxillary penetrated into the sinus,1 case of nerve injury,1 case of dental ulcer.Conclusion The intermxillary traction with the titanium screw is simple,safety and healthy method,but the postoperative complications also don't allow to ignore,surgeons should be controlled strictly,standardized operation,try to avoid complications.

Objective To investigate the effects of serum levels of leptin, IGF-1, BDNF and inflammatory markers in patients with post-stroke depression(PSD). Methods By using Hamilton rating scale for depression (HAMD) ,46 patients with post-stroke depression were recruited and 50 patients without depression as the control group. Two weeks after the onset of stroke, serum levels of leptin, insulin growth factor(IGF-1), hs-CRP, intracellular adhesion molecule (ICAM-1) and brain-derived neurotrophic factors (BDNF) were measured by enzymelinked immunosorbent assay(ELISA). Results The levels of leptin and IGF-1 in patients with PSD were significantly higher than that of the control group (( 57.4 ± 14.32) ng/ml vs (17.53 ± 11.62) ng/ml, P = 0. 002;(120.86 ±28.66) ng/ml vs (66.5 ± 17.51) ng/ml, P=0. 004 respectively). The serum levels of leptin and IGFI were positively correlated with the HAMD score(r=0. 724, P＜0. 01; r=0. 641, P＜0. 01 respectively). There was no significant differences in the levels of hs-CRP((2.3 ±0.42) mg/dl vs (2.2 ± 0.28) mg/dl, P= 0. 767),ICAM-1 (( 182.6 ± 50.27) ng/ml vs (178.7 ± 51.14) ng/ml, P = 0. 812) and BDNF(( 25.8 ± 8.35) ng/ml vs (24.2 ±7.48)ng/ml, P = 0.580)in the two groups. Conclusion The serum levels of leptin and IGF-1 may be associated with post-stroke depression and may be the markers of PSD in the old stroke patients.

Objective To investigate the correlation of suicidal ideation with social support and quality of life among only-child loss people.Methods Totally 320 only-child loss people were collected by using stratified cluster random sampling method.Social support rating scale(SSRS) and general quality of life inventory(GQOLI) were used to investigate the suicidal ideation status.The association of suicidal ideation with social support and quality of life was analyzed by Pearson correlation analysis.Results The suicidal risk rate of only-child loss people was 45.0％.Compared with control group((4.87±2.32),(35.50±9.33),(139.46±37.80)),only-child loss group had lower scores in suicidal ideation,SSRS,GQOLI ((8.94±3.99),(29.97±9.15),(29.97±9.15) respectively,t=1.997-15.009,P＜0.05 or P＜0.01).The suicidal ideation total score was negatively correlated with scores of SSRS and all its 4 items,GQOLI,physical function,psychological function(r=-0.121--0.270,P＜0.05 or P＜0.01).The score of suicidal ideation in the past year was positively correlated with scores of material function (r=0.135,P＜ 0.05).Regression analysis showed that age,marriage,objective support,subjective support and GQOLI were the influencing factors(t=-3.251-3.160,P＜ 0.01 or P＜0.05).Conclusion Only-child loss people have higher suicidal risks,which is negatively correlated with lower social support and quality of life,and influenced by age,marriage,SSRS and GQOLI factors.

Objective To evaluate left ventricular geometry and function in elderly type 2 diabetic patients with normal and high pulse pressure by using three-dimensional speckle-tracking echocardiography (3DSTE).Methods A total of 76 elderly non-hypertensive type 2 diabetic patients were divided into type 2 diabetic combined with high pulse pressure group (n=36;24 h pulse pressure ≥60 mmHg) and type 2 diabetic combined with normal pulse pressure group (n=40).Forty age-and sex-matched healthy volunteers with normal 24 h pulse pressure were recruited as control group.3DSTE was performed in all participants.Results Significant differences in left ventricle geometry were found among the three groups (x2 =8.428,P=0.015),and concentric geometry was most prevalent in type 2 diabetic patients with high pulse pressure group.Global longitudinal strain in type 2 diabetic patients with normal pulse pressure group was significantly lower than that of control group (P＜0.001).The type 2 diabetic combined with high pulse pressure group showed severely lower strain values in all directions compared with control group and type 2 diabetic combined with normal pulse pressure group (all P＜0.05).Conclusion 3DSTEC can detect subclinical cardiac abnormalities in elderly type 2 diabetic patients with normal and high pulse pressure.

BACKGROUND:Photothermal therapy is a novel tumor treatment strategy that uses photothermal agents to transform light energy into heat energy to accomplish non-invasive tumor ablation.The rise of photothermal therapy and nanotechnology has provided a new perspective on breast cancer treatment.OBJECTIVE:To prepare a new type of near-infrared biomimetic nanoprobe that has been modified by breast cancer cell membrane,to investigate the effect of near-infrared fluorescence/ultrasound imaging in vitro,and to observe its targeting ability and photothermal therapy effect on homologous tumor cells in vitro.METHODS:Organic small molecule ITIC-4CI with A-D-A structure was used as photothermal agents;polylactic acid/glycolic acid copolymer as nanocarrier;4T1 cell membrane of mouse breast cancer cells as a surface modifier of nanoparticles;perfluorohexane(PFH)was loaded.A novel near-infrared biomimetic nanoprobe(4T1m/ITIC-4CI/PFH)was prepared by the double emulsion evaporation method and sonication method.The basic characterization of the nanoprobe and the homologous targeting ability were detected.The photothermal properties and photothermal stability of the probe were investigated,and the near-infrared fluorescence/ultrasound imaging effect of the probe under laser irradiation was observed.The CCK-8 assay and calcein/propidium iodide staining were used to assess the efficacy of photothermal therapy.RESULTS AND CONCLUSION:(1)The prepared 4T1m/ITIC-4CI/PFH nanoprobes had uniform size,high stability,and an average particle size of(92.7±2.3)nm.The probe's protein composition was identical to that of the 4T1 cell membrane.The nanoprobe's ability to target homologous 4T1 cells was validated by an in vitro cell uptake assay.(2)The nanoprobe had a red-shift absorption spectrum and tail emission extending to the near-infrared-Ⅱ,which emitted a bright near-infrared-Ⅱ fluorescence signal under laser irradiation.(3)After laser irradiation,the nanoprobe 4T1m/ITIC-4CI/PFH could be turned into microbubbles and enhanced ultrasound imaging.The results of CCK-8 assay and calcein/propidium iodide staining showed that the nanoprobe 4T1m/ITIC-4CI/PFH had an obvious photothermal killing effect on 4T1 cells.(4)The results show that the nanoprobe 4T1m/ITIC-4CI/PFH has the ability to target homologous tumors and enhance near-infrared-Ⅱ fluorescence imaging/ultrasound imaging and photothermal therapy effects.

OBJECTIVETo construct a vector containing protein transduction domain (PTD) and bcr/abl fusion gene of chronic myelogenous leukemia and express PTD-bcr/abl fusion protein in E. Coli.

METHODSDNA fragment encoding PTD was synthesized and fused to PCR-amplified bcr/abl gene fragment, then inserted into plasmid pET-16b to get the expression vector pEPb containing PTD-bcr/abl fusion gene, which was transfected and expressed in E. Coli LB21. PTD-bcr/abl fusion protein was purified by affinity chromatography.

RESULTS523 bp bcr/abl fusion gene was effectively amplified. The PTD-bcr/abl gene sequencing showed the same sequence as scheduled. The fusion peptide was successfully expressed in E. Coli and purified.

CONCLUSIONThe results may provide a new PTD-bcr/abl fusion peptide for the immunotherapy of CML.

Electrophoresis, Polyacrylamide Gel ; Escherichia coli ; genetics ; Fusion Proteins, bcr-abl ; genetics ; metabolism ; Gene Expression ; Gene Products, tat ; genetics ; metabolism ; Genetic Vectors ; genetics ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive ; genetics ; Recombinant Fusion Proteins ; genetics ; metabolism