10.3969/j.issn.2095-4344.2013.24.017

Objective:To describe the status of subjective well-being among junior high school students in a city of Jiangxi Province and to explore the relationship between family functioning and subjective well-being.To explore the relationship between growth environment and subjective well-being among ju-nior high school students in the perspective of family functioning and to provide basis and data for the mental health education among junior high school students.Methods:630 students in a junior high school in Jiangxi Province were sampled by stratified cluster sampling,and 103 junior high school students from 18 villages were sampled by household survey.They were investigated by subjective well-being scale for adolescents and Family Assessment Device.Results:(1)The overall subjective well-being of junior high school students was in the lower-middle level.Regarding all the dimensions of subjective well-being,they had the highest satisfaction on family and friendship,lowest academic satisfaction,low positive as well as passive emotion.(2)Girls had higher satisfaction on friendship and freedom than that of boys;children from families with more than one kids had more negative emotion than that of single child;boarding students had higher satisfaction on family,academics and freedom than that of non-boarding students;family residence and structure affected the satisfaction on family;grade and learning achievement affected some dimensions of subjective well-being among junior high school students.(3)Pearson correlation analysis and multiple linear regression analysis showed that some dimensions of family functioning were related to certain dimensions of subjective well-being among junior school students,and family functioning could predict the level of subjective well-being.Conclusion:The overall subjective well-being of junior high school students is in the lower-middle level,and further improving is needed.Family functioning has a great influence on junior school students' subjective well-being.Junior high school students who have healthy family functioning are more likely to have higher life satisfaction,and tend to experience higher subjective well-being.

Objective To evaluate and compare the presence of the nerve root sedimentation sign in patients with lumbar spondylolisthesis (LS) and lumbar disc herniation(LDH). Methods One hundred and fifty-one patients with degen?erative lumbar spinal disease treated by surgery from July 2012 to March 2014 were reviewed retrospectively in Tianjin Hos?pital. All the patients were divided into two groups:LS group (48 cases) and LDH group (103 cases). The clinical outcomes were evaluated by Japanese Orthopedic Association (JOA). The probability of positive sedimentation sign was compared be?tween LS group and LDH group. Correlation between the JOA score and nerve root sedimentation sign were analysed in two groups. Results There was no statistical difference in JOA score between LS group and LDH group (15.83±3.57 vs 16.76± 3.10, t=1.624, P=0.107). A positive sedimentation sign was identified in 39 patients in the LS group (81.25%) but in 65 pa?tients in the LDH group (63.11%). The difference between LS group and LDH group was statistically significant(χ2=5.028, P=0.031). In LS group, JOA scores of patients with positive nerve root sedimentation sign were lower than those of patients with negative nerve root sedimentation sign(15.33±3.50 vs 18.00±3.20, t=2.092,P=0.042);but in LDH group, there was no statistical difference in JOA scores of patients between positive nerve root sedimentation sign and negative nerve root sedi?mentation sign (16.40±3.13 vs 17.37±2.99, t=1.539, P=0.127). Conclusion A positive sedimentation sign also occurs in pa?tients with LDH, but positive nerve root sedimentation sign are more likely to appear in patients with lumbar spondylolisthe?sis who have worse clinical symptoms.

Objective To observe changes in bone mass and symptom duration in patients with lumbar disc herniation(LDH) and explore the relationship between osteoporosis and clinical features of LDH. Methods 83 LDH patients undergoing surgery were enrolled in the study from November 2008 to September 2009. Before surgery, dual-energy X-ray absorptiometry was used to detect bone mineral density of lumbar spine and hip, and calculate T score. The patients were divided into three groups according to the T score: group A (normal bone mass group, n=27), group B (osteopenia group, n=31) and group C (osteoporosis group, n=25). The differences in the duration of symptoms and pathological types were compared between the groups. The relationship between BMI and lumbar spine T-score was explored. Results There were no significant differences in the pathological types among the three groups. The symptom duration in group C was significantly shorter than in group A (P < 0.05). There was no correlation between BMI and lumbar spine T-score (r=0.20, P=0.070). There was positive correlation between BMI and Hip T-score (r=0.263, P=0.016). Conclusion Osteoporosis may affect the symptom duration of LDH patients. We should attach great importance to patients with osteoporosis and LDH.

Objective To analyze the clinical results and early complications of corpectomy and reconstruction with titanium mesh cage implantation and pedicle screw fixation via a single posterior approach for severe thoracic and lumbar fractures.Methods Forty-four patients treated by reconstruction with titanium mesh cage implantation and pedicle screw fixation via a single posterior were studied retrospectively.There were 35 males and 9 females,with an average age of 37.3 years(range,19-66 years).The injury segments include 1 case at T11,5 cases at T12,20 cases at L1,11 cases at L2,5 cases at L3 and 2 cases at L4.According to AO classification,there were 24 cases of A3,17 cases of B1 and B2,and 3 cases of C1.According to ASIA,there were 10 cases of grade A,17 cases of grade B,10 cases of grade C and 7 cases of grade D.The neurologic function and effectiveness of correction of preoperative,immediate postoperative and 2years follow-up were compared,and the clinical outcome and early complications were analyzed.Results The follow-up time was 24 to 58 months,mean 38.9 months.At the time of 2 years postoperation,43 cases of incomplete neurologic deficit had improved 1 or 2 ASIA grades except 1 case of grade A.The results of decompression and reduction were satisfactory from the postoperative radiographic examinations.The correction maintained well and the implant loosening was not seen in 43 cases(97.7%)at the last follow-up.The com plications include:excessive blood loss(＞1500 ml)in 9 cases,transient nerve root injury in 4,cerebrospinal fluid leakage in 3,instrumentation failure in 1,mesh cage malposition in 3,iatrogenic leaving of free bone granula into the canal in 2,and superficial infection in 1.Conclusion This technique is effective for decompression and fusion,less invasive than combined anteroposterior procedure,and may be another good alternative for the treatment of severe thoracic and lumbar fractures.The early complications are not rare,but most of them are not serious and are relative to techniques.

Objective To investigate the effects of different cyclic tensile strains on the proliferation and expression of bone marrow stromal cells (BMSCs)-cocultured human degenerated anulus fibrosus (AF) cells. Methods AF cells were isolated from a patient with degenerated intervertebral disc degeneration (IVD), which were co-cultured with BMSCs. The solely cultured AF cells were used as control group. The two groups of cells were expanded in monolayer, and cyclically strained for 3 hours, which were applied 0, 5%, 10%, 15%and 20%strains at a frequency of 0.25 Hz using BioDynamic test instrument. A flow cytometry method was used to examine the AF cell proliferation at 24 hours followed the application of cyclic tensile strains. After the total RNA was extracted, real-time PCR technology was used to detect the gene expression of collagenⅠand aggrecan. Results Under the same appropriate stress, the proliferative index (PI), the proportion of cells in the period of DNA synthesis, the expression of collagenⅠand aggrecan were significantly higher in the co-cultured group than those of control group (P<0.05). However, the best mechanical stimulation was different in the two groups. For the AF cells, the peaks of PI, the proportion of cells in the period of S period, the expression of collagenⅠand aggrecan were found in the 10% strain group, while for the co-cultured cells, they were found in the 15% strain group. Conclusion Co-culturing with BMSCs has a positive effect on the proliferation and expression of human degenerative fibrous ring cells, which can protect AF cells from bad stress stimulation.

Objective To investigate the expression and clinical significance of neutrophil S100A8/A9 in induced sputum in children with bronchial asthma. Methods A total of 108 cases of bronchial asthma patients in the FourthAffiliated Hospital of Nanchang University were involved in the study form October 2014 to October 2015. According to the severity of the disease, the patients were divided into mild group (n=40), moderate group (n=36) and severe group (n=32). Twenty health children were taken as control group at the same period. All the patients were treated with budesonide aerosol for three months, and the control group was received aerosol inhalation for normal saline (NS). The ratio of forced expiratory volume in one second and forced vital capacity (FEV1/FVC, FEV1%) were used to evaluate the pulmonary function in two groups. The asthma control questionnaire (AcQ-5) score was used to estimate the asthma control effects. The expression level of neutrophil S100A8/A9 mRNA in induced sputum was detected by real-time PCR. The correlation of S100A8/A9 mRNA, AcQ-5 score and FEV1%was analyzed. Results Before the treatment, the FEV1%decreased, while the AcQ-5 score and express level of S100A8/A9 mRNA significantly increased with the severity of disease (all P<0.01). Three months after treatment, asthma was completely controlled in 60 patients, partial controlled in 31 cases and uncontrolled in 17 cases. With the improvement of the therapeutic efficacy, the FEV1%significantly decreased, while the express level of S100A8/A9 mRNA significantly increased (all P < 0.01). The express level of S100A8/A9 mRNA in induced sputum neutrophils was negatively correlated with FEV1%(r=-0.327 and-0.406 respectively, P<0.05), which was positively correlated with ACQ-5 score (r=0.704 and 0.817, P<0.05). Conclusion The level of S100A8/A9 expression in induced sputum neutrophil is positively correlated with the severity of asthma, which can be used as clinical indicators of the severity and the efficacy of asthma.

Animal model of hydrocephalus is an important object to study the mechanism, pathological characteristics, and treatment of hydrocephalus. A stable and controllable animal model in accordance with clinical development of hydrocephalus can help to develope hydrocephalus related basic research and clinical translational application. According to the study purpose and genetic and physiological characteristics of experimental animals, a variety of animals have been used to establish different types of hydrocephalus animal models. The methods for congenital hydrocephalus models include gene edition and metabolic induction, while secondary hydrocephalus models can be induced by blocking the circulation of cerebrospinal fluid and interfering cerebrospinal fluid absorption. The hydrocephalus models constructed by different methods are also different in progression, neurofunctional changes, and histopathological characteristics. This paper reviews the construction methods and pathological characteristics of various hydrocephalus models in order to provide references for selection of animal models for hydrocephalus-related research.

According to the pathological characteristics of symptomatic chronic thoracic and lumbar osteoporotic vertebral fracture (SCOVF), the different clinical treatment methods are selected, including vertebral augmentation, anterior-posterior fixation and fusion, posterior decompression fixation and fusion, and posterior correction osteotomy. However, there is still a lack of a unified understanding on how to choose appropriate treatment method for SCOVF. In order to reflect the new treatment concept and the evidence-based medicine progress of SCOVF in a timely manner and standardize its treatment, the clinical guideline for surgical treatment of SCOVF is formulated in compliance with the principle of scientificity, practicability and advancement and based on the level of evidence-based medicine.