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BACKGROUND:Short-segment pedicle screw technology has been extensively used in the treatment and repair of thoracolumbar burst fractures in the clinic. However, it requires further investigations whether bone graft through unilateral pedicle channel has superiority. ＜br> OBJECTIVE:To observe the perioperative effects on thoracolumbar burst fractures posterior by bone graft through unilateral pedicle channel with short pedicle screw segment fixation. ＜br> METHODS:Clinical data of 57 cases of thoracolumbar burst fractures without neurological symptoms treated by short segment pedicle screw internal fixation therapeutic method at the Department of Orthopedics, The First People’s Hospital of Yinchuan City from January 2009 to December 2013 were retrospectively analyzed. According to therapeutic methods, they were divided into three groups:pedicle screw fixation through injured vertebrae (n=21), unilateral pedicle screw fixation with vertebrae pedicle screw (n=19), and the short segment pedicle screw fixation with unilateral pedicle screw fixation and bone graft through pedicle channel (n=17). We observed the changes in operation time, the blood loss volume in operation, postoperative drainage blood (at the period of removing the drainage tube), injured vertebrae height’s ratio, the Cobb’s angel of injured vertebrae sagittal plane, vertebral canal encroachment rate and visual analog scale. ＜br> RESULTS AND CONCLUSION:(1) The unilateral pedicle screw fixation and bone graft by pedicle channel could prolong operation time and increase postoperative drainage blood volume (P＜0.05). (2) Three operation methods improved vertebral body height. (3)There were no significant differences in Cobb’s angle postoperation among the three groups (P>0.05). These data suggested that the bone graft through pedicle channel was not the factors to improve the spine kyphosis. (4) Bone graft by pedical channel improved vertebrae channel value. (5) Bone graft through pedicle channel combined with screw implantation could improve pain after treatment. These findings indicated that the therapeutic technology of short pedicle screw fixation on thoracolumbar vertebral burst fracture with unilateral pedicle fixation and bone graft through pedicle channel is a safe reliable operation method.

Objective To examine the relationship between quetiapine serum concentration,dose,therapeu-tic efficacy and side effects in male patients with schizophrenia.Methods Sixty-three male patients with schizo-phrenia were collected.They were treated openly for 8 weeks with quetiapine,the dose was adjusted according to clini-cal improvement and tolerance.The plasma quetiapine concentrations,therapeutic efficacy and adverse drug reactions were observed after the 4 -week treatment period,and at the end of the 8 weeks of the treatment.Results After 4 weeks,the serum concentration had significant correlation with age,the disease duration and education level.After 8 weeks,there was significant correlation between serum concentration and age.We found a correlation between dose and serum concentration of quetiapine,and no relationship between serum concentration and PANSS scores.Side effects were correlated with 4 weeks′serum concentrations.Conclusion Quetiapine is effective for male patients with schizophrenia.Age,quetiapine dose and side effects have significant correlations with the serum concentration.It appears that plasma quetiapine concentration has no effects on therapeutic efficacy.

Objective This preliminary study aimed to investigate relevant factors of the metacognition of peri?menopausal women. Methods Total 66 perimenopausal women voluntarily participated in this study from October 2012 to July 2013. The Metacognitions Questionnaire 30-item version (MCQ-30) was used to assess metacognition from 5 di?mensions including cognitive confidence (F1), positive beliefs (F2), cognitive self-consciousness (F3), uncontrollability and danger (F4), and need to control thoughts (F5). Eysenck Personality Questionnaire was utilized to measure the person?ality characteristics such as the extraversion/introversion (E), neuroticism/stability (N), psychoticism/socialization (P), and lie (L). Depression and its 4 symptom components including core, cognitive, anxiety, and somatic symptoms were deter?mined by Zung Self-rating Depression Scale (SDS). The linear multiple stepwise regression were performed to analyze the relevant factors of each MCQ dimension. Results The education level (β’=-0.229, P=0.035), N score (β’=0.255, P=0.042), and L score (β’=-0.292, P=0.021) were related to F1. The education level (β’=-0.260, P=0.031) and N score (β’=0.248, P=0.039) were predictors of the dependent variable F2. The core depression symptom (β’=-0.251, P=0.037) and anxiety symptom (β’=-0.248, P=0.039) of SDS were negatively related to F3. Predictors of F4 were the body mass in?dex (β’=0.211, P=0.048) and L score (β’=0.511, P<0.0001). Only P score (β’=0.299, P=0.015) was related to F5. Con?clusion The metacognition level of perimenopausal women is affected by a variety of factors such as personality character?istics and education level, and low self-consciousness and lack of confidence to the cognitive process may be involved in the increased susceptibility to depression.

Objective To compare the efficacy and safety of a new low-dose oral contraceptive pill (YAZ) containing drospirenone 3 mg and ethinylestradiol 20 μg with placebo in reducing symptoms of premenstrual dysphoric disorder (PMDD). Methods This multicenter, double-blind, randomized clinical trial consisted of 2 run-in and 3 treatment cycles (84 days) with daily symptom charting; 187 women with symptoms of PMDD were randomized to either placebo group (n=94) or YAZ group (n=93), and assessed with daily record of severity of problems scale (DRSP) and clinical global impressions scale (CGI) before, during and after the treatments. Hormones were administered for 24 days, followed by 4 days of inactive pills. Results Compared with baseline level of DRSP, both groups got improvement after treatment; the YAZ group (median-28.7, range:-82.5 to 2.3) had greater improvement than that in the placebo group (median-23.7, range:-86.0 to 11.8), while there was not significant difference (P>0.05). The main adverse effects of YAZ included intermenstrual bleeding [13% (12/93) versus 3% (3/94)], menorrhagia [9% (8/93) versus 1%(1/94)], nausea [5%(5/93) versus 4%(4/94)] and skin rash [4%(4/93) versus 2%(2/94)]. Conclusions YAZ could improve symptoms of PMDD better than placebo, while without statistic significance in this study. The most common adverse effects are intermenstrual bleeding, menorrhagia, nausea and rash.

BACKGROUND:In recent years, vacuum sealing drainage technology has been widely used in the treatment of orthopedic wounds or to facilitate skin graft survival, both of which have achieved good results.
OBJECTIVE:To observe the curative effects of vacuum sealing drainage technology in the wound healing after limb open fractures, soft tissue defects, pressure sores, and chronic osteomyelitis.
METHODS:Fifty-four patients of fractures combined with soft tissue defects, postoperative exposed bone, osteomyelitis, a large area of pressure ulcers or severe infections, selected from the 273rd Hospital of PLA, were randomly divided into test and control groups according to the wishes of patients. The test group included 36 patients who were treated with vacuum sealing drainage using polyethylene ethanol hydration seaweed salt after debridement, and the control group included 18 patients who were treated with conventional dressing. Wound cleaning time, number of dressings, and wound healing time were detected and compared in the two groups.
RESULTS AND CONCLUSION:Compared with the control group, the wound cleaning time and wound healing time were shorter in the test group, and the number of dressings was also decreased in the test group (P<0.05). After removal of sponge dressings, in the test group, wound granulation was fresh and grew obviously with no exudates after the necrotic residue was removed and vacuum sealing drainage was changed. For the bone exposure patients, the wound area was reduced, or even there was no exposed bone any more. After skin grafting, vacuum suction and pressure due to vacuum sealing drainage technology made al skin grafts survive. In the patients with chronic osteomyelitis, the exudates were gradual y reduced until disappeared after vacuum sealing drainage was exchanged three or four times, and pathogens were not found in bacterial culture. After combined treatment of debridement and vacuum sealing drainage, there were many fresh granulations in the patients with large areas of pressure sores;after replacement of vacuum sealing drainage several times, the granulation grew to the same height with the surrounding skin.

OBJECTIVE: The aims of the present study were to explore the occurrence of childhood trauma and importantly to determine the impacts of childhood trauma on psychosocial features in a Chinese sample of young adults. METHODS: A survey was carried out in a group of 555 university students by using Childhood Trauma Questionnaire (CTQ), Self-rating Depression Scale (SDS), Self-rating Anxiety Scale (SAS), Dysfunctional Attitudes Questionnaire (DAS), Eysenck Personality Questionnaire (EPQ), and Social Support Rating Scale (SSRS). The moderate-severe cut-off scores for CTQ were used to calculate the prevalence of childhood trauma, and then psychosocial features were compared between individuals with and without childhood trauma. RESULTS: A proportion of 18.6% of university students had self-reported childhood trauma exposures. Subjects with childhood trauma reported higher scores of SDS, SAS, DAS, and psychoticism and neuroticism dimensions of EPQ (t=4.311–5.551, p < 0.001); while lower scores of SSRS and extraversion dimension of EPQ (t=-4.061– -3.039, p < 0.01). Regression analyses further revealed that scores of SAS and DAS were positively (Adjusted B=0.211–0.230, p < 0.05), while scores of SSRS were negatively (Adjusted B=-0.273– -0.240, p < 0.05) associated with specific CTQ scores. CONCLUSION: Childhood trauma is still a common social and psychological problem. Individuals with childhood trauma show much more depression, anxiety, distorted cognition, personality deficits, and lower levels of social support, which may represent the social and psychological vulnerability for developing psychiatric disorders after childhood trauma experiences.
Anxiety ; Asian Continental Ancestry Group* ; Cognition ; Depression ; Extraversion (Psychology) ; Humans ; Prevalence ; Young Adult*

OBJECTIVE: To evaluate the status of ethical awareness of medical journals in China.
 METHODS: We surveyed editorial awareness based on 88 medical journals by using self-made questionnaire. Five aspects were selected by literature and systematic analysis: Instruction for authors, the first review stage, the peer-review stage, the editing stage, as well as education and training, which covered 11 indexes in the system. Weight values of indexes were gained by scoring of senior editors, and analytic hierarchy process, TOPSIS method, and weight rank-sun ratio were used to evaluate the status of editorial awareness.
 RESULTS: Of the 88 biomedical journals, 56 (63.6%) had no ethical requirement in the instruction for authors in 2010, 14 (15.9%) were at high level of ethical awareness, 45 (51.1%) were at medium level, and 29(33.0%) were at low level. There were significant differences in the scores of instruction for authors and peer-review stage among the journals administrated by different authorities (H(C)=10.175, H=7.305, P<0.05). There were significant differences in the scores of instruction for authors, the first review stage, the peer-review stage, and the editing stage among the journals covered by different databases (H(C)=11.951, 7.661, 6.146, or 8.085, P<0.05), meanwhile, there was significant difference in the multi-level results of comprehensive evaluation for different databases covered journals (H(C)=6.109, P<0.05). The results from 3 comprehensive approaches were positively correlated.
 CONCLUSION Ethical awareness of medical journals in China should be improved. Comprehensive approach is more reliable and practical than that of single approach.
China ; Editorial Policies ; Periodicals as Topic ; ethics ; Surveys and Questionnaires

At present， many antidepressant drug categories have been marketed in China， but still lack a scientific and standardized system for drug comprehensive clinical evaluation. To guide and promote medical institutions to standardize the comprehensive clinical evaluation of antidepressant drugs， 19 clinical， pharmacy and evidence-based medicine experts from China were organized by the China Population Welfare Foundation to evaluate 11 drugs in 5 categories， including sertraline/escitalopram/ paroxetine/fluvoxamine/citalopram/fluoxetine/venlafaxine/duloxetine/vortioxetine/agomelatine/mirtazapine， through seminars and interviews， concerning clinical real-world data and evidence-based medicine， and to form the first draft of Expert Consensus on Comprehensive Clinical Evaluation of Antidepressant drugs， which is finalized after peer review by 18 clinical and pharmacy experts. The evaluation system of this expert consensus adopts the quantitative evaluation system of percentile and carries out a systematic evaluation from 6 dimensions of effectiveness， safety， economy， suitability， accessibility and innovativeness， while the evaluation dimensions are more detailed， with the operability of the drug evaluation system and the characteristics of drugs in the field of antidepressants. It aims to provide a theoretical basis for the rational use of drugs in the field of psychiatric disorders in medical institutions and help improve the quality of pharmacy services to better meet the needs of the people for medication.

In this study, we aimed to construct a non-replication mRNA platform and explore the side effects of electroporation-mediated delivery of mRNA on the mice as well as the expression features of the mRNA. With luciferase gene as a marker, in vitro transcription with T7 RNA polymerase was carried out for the synthesis of luciferase-expressed mRNA, followed by enzymatic capping and tailing. The mRNA was delivered in vivo by electroporation via an in vivo gene delivery system, and the expression intensity and duration of luciferase in mice were observed via an in vivo imaging system. The results demonstrated that the mRNA transcripts were successfully expressed both in vitro and in vivo. The electroporation-mediated delivery of mRNA had no obvious side effects on the mice. Luciferase was expressed successfully in all the mRNA-transduced mice, while the expression intensity and duration varied among individuals. Overall, the expression level peaked on the first day after electroporation and rapidly declined on the fourth day. This study is of great importance for the construction of non-replication mRNAs and their application in vaccine or antitumor drug development.
Animals ; Electroporation/methods* ; Gene Transfer Techniques ; Luciferases/metabolism* ; Mice ; RNA, Messenger/genetics*