[Objective] To evaluate the feasibilitiy,methods and therapeautical effects of the posterior circumferential fusion (PCF) combined with short -segmental pedicle screw system fixation for the treatment of lumbar spondylolisthesis(LSL). [Method] From October 2002 to March 2006, 44 cases of LSL were treated with decompression for spine canal stenosis, circumferential fusion and short-segmental pedicle screw system fixation. There were 15 male and 29 female, average age was 48. 6 (ranged, 31~68) years. The diagnoses of LSL and stenosis were confirmed by X-ray and CT. According to Newman classification, 15 of them were the degenerative type and 29 were isthmic type. According to Meryerding classification of LSL, 17 patients had degree I, 24 patients had degree Ⅱ and 3 patients had degree Ⅲ spondylolisthesis. The levels of LSL was between L4 and L5,in 18 patients and between L5 and S1 in 26 cases.[Result]The follow-up period was 18~36 months , averaged 26 months.Seventeen patients with degree Ⅰ spondylolisthesis were all reduced anatomically after surgery. Twenty-four patients with degree Ⅱ spondylolisthesis were reduced anatomically except for 6 patients with Ⅰ degree residual spondylolisthesis. 3 patients with degree Ⅲ spoadylolisthesis were reduced anatomically except for 2 spatients with Ⅰ degree residual spondylolishesis. The effect was evaluated according to Hou Shuxun's evaluation standard, the results were excellent in 28 cases, good in 13 cases, and fair in 3 cases. The excellent and good rate was 93.2%. No complication such as interfixation failure and nerve pedicle injury or cauda equine injury were found. All cases got bony union in 3 to 10 months (mean 4.2 months) postoperatively. All patients had normal disc height and no loss of spondylolisthesis reduction. [Conclusion] The PCF combined with short-segmental pedicle screw system fixation is reasonable options in treating the LSL. It can improve the fusion rate of the spine and maintain good intervertebral space and good lordosis of the lumbar spine. The satisfactory clinical result is relied on the completely understanding of the characteristics of PCF and short-segmental pedicle screw fixation.

[Objective]To discuss the feasibility and efficacy of the treatment of low subtrochanteric femoral fracture(LSFF) by using general interlocking intramedullary nail(GIIN).[Method]Between March.2000 and January.2006,47 cases(38 males,9 females) of LSFF were treated with limited incision and 6IIN.The mean age of the patients were 41.2 years(range 25 to 78 years).29 of them were injured in a traffic accident,7 in falling,6 in crush by a heavy object and 5 in pedestrain injury.According to Seinsheimer classification,11 cases were type IA,10 cases were type lB,19 cases were type ⅢB,and 7 cases were type Ⅳ(8 combined with other fractures)6 of these were open fractures(4 cases of Gustilo-Anderson type Ⅰ and 2 cases of type Ⅱ).The procedure included following step: all patients were treated with limited open reduction.The pyriform sinus entry point were localized with retrograde reamed;then,intramedullary nail was performed through the anterograde approach after limited reamed.All fractures were fixed statically.The operation time were from 50 minutes to 130 minutes(averaging 90 minutes).[Result]All the cases,were followed up for 11 to 34 months,with an average time of 33 months.The alignment of fracture was good.The bone union time were 2.5～6 months,the average 3.9 months.Fracture union rate was 100%.The functional evaluation was done by Sanders traumatic hip rating scale.of the 47 cases,31 were excellent,14 good and 11 fair.The excellent and good rate was 95.7%.There were no infection,implant breakage,limb shortening and varus deformity.[Conclusion]In treatment of LSFF,the GIIN is worth to recommend because it is simple for use,no need of X-ray monitoring during the operation,reliable,high union rate,rare complications,and good effects.Reasonable application of GIIN,better fracture reduction and early active functional rehabilitation(earlier activities and later weight bearing) are the keys to obtain a good clinical result.

Objective To discuss the selection and application of internal fixators in the treatment of aged patients suffering from femoral condyle fracture. Methods 82 aged patients with femoral condyle fracture were treated from February 1995 to June 2002. According to AO/ASIF classifcation,26 cases were classified as type A,17 cases type B, and 39 cases type C. They were treated with internal fixation by 95?angle plate (19 cases), T type plate(5 cases), AO condyle supporting plate (11 cases), dynamic condylar screw (DCS) (23 cases) and Green Seligsen Henry (GSH) (24 cases). Measures of auto ilium transplant or homologous allograft bone transplant (28 cases) were also taken. Results All the cases were followed up for an average of 14.6 months. Merchan grading method was applied to evaluate their knee joint functions. The total excellent and good rate was 90.2%. Conclusions Aged patients with femoral condyle fracture should be treated specially. The fixation should be chosen according to their fracture type so as to ensure fine clinical results. The goal of the operation is to keep the integrity of articular surface of the femoral condyle and to acquire secure internal fixation.

Objective:To investigate the effects of Zinc sulfate on preventing human umbilical veins endothelial cells ( HUVECs) from oxidative stress. Methods:Hydrogen peroxide was used to stimulate HUVECs to build the oxidative stress model in vitro. HUVECs were divided into normal group, H2 O2 group, Zinc sulfate group and Zinc sulfate treated group. Method of nitrate reductase was used to detect the content of nitric oxide ( NO ) and ELISA was used to detect the content of endothelin ( ET ) in supernatant in different groups. The level of HO-1,SOD and CAT of HUVECs were measured by Western blot. Apoptosis of HUVECs was examined by TUNEL as well. Results: Zinc sulfate could enhance the content of NO and decrease the content of ET in the supernatant,which induced by hydrogen peroxide on HUVECs. Zinc sulfate could also increase the level of HO-1, SOD and CAT obviously and decrease the apoptosis cells significantly induced by H2 O2 . Conclusion: Zinc sulfate play an important role in resisting oxidative stress in HUVECs, and maybe prevent HUVECs from oxidative stress damage. Zinc sulfate is expected to be an effective medicine on improving endothelial cells anti-oxidative ability.

BACKGROUND:Currently, modified laminoplasty with C7 spinous process and muscle attachment points reserved and C2, C7 decompressive laminectomy can reconcile both ful decompression and structure stability. With early isometric neck muscle exercise, it can enhance cervical dynamic and static force balance and maintain the stability of the cervical spine.
OBJECTIVE:To investigate the clinical effects of modified cervical laminoplasty with postoperative isometric neck muscle exercise on cervical spondylotic myelopathy patients.
METHODS:114 patients with cervical myelopathy were separately performed traditional cervical laminoplasty (control group), modified cervical laminoplasty (modified group), modified cervical laminoplasty, and neck muscle isometric exercise (combined group). Fol ow-up was conducted for 24 months.
RESULTS AND CONCLUSION:(1) Cervical Japanese Orthopaedic Association score, cervical Neck Disabilitv Index scores and the incidence of axial symptoms:There was no significant difference in the Japanese Orthopaedic Association score of three groups at 6, 12 and 24 months after surgery. At 6, 12 and 24 months after surgery, Neck Disability Index scores and constituent ratio of axial symptoms were better in the modified group than the other groups (P<0.05). (2) Results show that modified cervical laminoplasty with isometric neck muscle exercise can get better clinical results in the treatment of cervical myelopathy.

Objective To elucidate the roles of TANK-binding kinase-1(TBKl)in hepatitis B virus (HBV)infection induced interferon antiviral immunity.Methods Peripheral blood monocytes were separated by CD14 magnetic microbeads from healthy volunteers(HV)and chronic hepatitis B(CHB)patients.Purified mDCs were induced and proliferated in the culture medium with human granulocyte-macrophage concentration of 25 mg/L were stimulated.The mRNA expressions of TBK1,interferon regulatory factor (IRF)3 and interferon(IFN)-βwere quantified by real time polymerase chain reaction(PCR).The levels of IFN-β in supernatants were determined by enzyme-linked immunosorbent assay(ELISA).Reslllts The mRNA levels of TBK1,IRF3 and IFN-β did not change significantly at 0,12,24 and 48 h after the significantly at 0, 12, 24 and 48 h in CHB group, whereas, it was significantly up-regulated at 12 h in HV group. Conclusions Our results suggest that there may be some disorders in host antiviral signal transduction pathways downstream the binding between ligands and receptors on mDC surface. The insufficient IFN-β expression after HBV infection may result in persistent chronic infection.

Objective To analyze the research direction of military medical literature published in Chinese and foreign languages.Methods Search the military medical literature through subject cat egory and subject words from CNKI and PubMed database.Results Total number of 10 630 articles were found.384 articles with no information of the author and mainly related to the introduction and information.The remaining 10 246 articles were included as the basis for the analysis of Chinese literature.A total of 22 847 foreign literatures were searched.Conclusions From the analysis of research papers published at home and abroad,both the authors and the contents of the research institutions varies a lot.Foreign research paid more attention to military medical trauma,while focus more on disease occurred in the army and logistic support guarantee in China.Three Military Medical University Affiliated Hospitals and the Military Hospital are the main force in military medical research in China.However,the domestic military hospitals,such as Xijing Hospital and Changhai Hospital published most of their high quality papers in abroad,which may be affected to the mechanism of rewards and punishment of domestic institutions.

OBJECTIVETo investigate the protective effect and mechanism of Ecliptae Herba extract on cigarette smoke extract-induced cytotoxicity.

METHODThe effect of Ecliptae Herba extract on CSE-induced NHBE cell proliferation was detected by MTT assay. GSH content was determined by DTNB colorimetry. GST activity was measured by CDNB colorimetric assay. NQO1 activity was detected by NADPH and DCIP. The protein expression was determined by Western blot assay.

RESULTEcliptae Herba extract reduced CSE's inhibitory effect on NHBE cells, recover the decrease in intracellular GSH caused by CSE and reduce the CSE-induced activity of GST and NQO1 and NQO1 protein expression.

CONCLUSIONEcliptae Herba extract can reduce CSE-induced injury on NHBE cells, which may be related to phase II detoxification enzymes.

Cell Line ; Cell Proliferation ; drug effects ; Drugs, Chinese Herbal ; pharmacology ; Eclipta ; chemistry ; Gene Expression ; drug effects ; Humans ; NAD(P)H Dehydrogenase (Quinone) ; genetics ; metabolism ; Protective Agents ; pharmacology ; Smoke ; analysis ; Smoking ; adverse effects ; Tobacco ; chemistry

Objective:To investigate the status quo of multi-level pre-job training for clinical nursing teachers and analyze their training needs, so as to provide reference for the design of pre-job training for clinical nursing teachers.Methods:A cross-sectional survey method was used to investigate 172 clinical nursing teachers in a tertiary general hospital in Harbin from April 2020 to June 2020 with multi-level pre-job training mode. The status quo of pre-job training and the training needs of teachers were analyzed. SPSS 17.0 was used to process the original data statistically.Results:Among the 172 respondents, 138 teachers (80.2%) were under 35 years old, and 133 teachers (77.3%) had a bachelor's degree or less; 89 teachers (51.7%) confirmed that hospitals or departments would carry out pre-job training in a planned and organized way, 10 teachers (5.8%) said that hospitals or departments had never organized training, 41 teachers (23.8%) had never participated in pre-job training, and 80 teachers (46.5%) had participated in pre-job training 1-3 times. There were 5 duplicates in the first 8 training contents of in-hospital training and in-department training, including knowledge of common diseases, nursing procedures, communication skills, hospital rules and regulations, and teaching methods. The total score of training demand was (154.51± 40.35) points, and the overall demand rate was 81.3%, which was at the high level. The dimensions with the highest scoring rate were legal system and humanistic literacy, with a scoring rate of 83.0%. The dimension with the lowest score was teaching management, with a score of 74.9%. The scoring rate of training needs with the highest points won nine items respectively on students' basic quality (self-supervision, willingness to learn, professional quality, etc.) (84.7%), training of legal knowledge (84.4%), incompatibility of drugs commonly used in department (84.3%), nurse etiquette (83.3%), nursing risk prevention (83.1%), evaluation methods of student education (83.1%), nurse-patient communication skills (83.0%), nurses and patients medication observation points of commonly used drugs in the department (83.0%), and effects of commonly used drugs in department (82.9%). Among the top three training forms, 84 students (48.8%) received online learning, 74 students (43.0%) received lectures from experienced teachers in hospitals, and 72 students (41.9%) received experience exchange and sharing seminars.Conclusion:The talent structure of clinical nursing teachers in this hospital is relatively young, and the first education level is low. Therefore, the pre-job training of clinical nursing teachers should be strengthened vigorously. The awareness rate and participation rate of pre-job training are average, so we should strengthen the release of training information from various channels, improve the awareness rate of training activities, clarify the encouragement or reward measures to participate in pre-job training activities, and improve the participation rate of training activities. Pre-job training content is repeated at every level, with a gap between the training needs of teachers in clinical nursing teaching. It's suggested that the teaching hospitals combine with their training objects of training needs, take the online-offline mixed mode of training, reasonably plan training contents as a whole at all levels, avoid training content repetition and waste of teachers, and organize teachers to timely exchange and share experiences.

Background::Joint dislocations significantly impact public health. However, a comprehensive study on the incidence, distribution, and risk factors for joint dislocations in China is lacking. We conducted the China National Joint Dislocation Study, which is a part of the China National Fracture Study conducted to obtain the national incidence and risk factors for traumatic fractures, and to investigate the incidence and risk factors for joint dislocations.Methods::For this national retrospective epidemiological study, 512,187 participants were recruited using stratified random sampling and probability-proportional-to-size method from January 19 to May 16, 2015. Participants who sustained joint dislocations of the trunk, arms, or legs (skull, sternum, and ribs being excluded) in 2014 were personally interviewed to obtain data on age, educational background, ethnic origin, occupation, geographic region, and urbanization degree. The joint-dislocation incidence was calculated based on age, sex, body site, and demographic factors. The risk factors for different groups were examined using multiple logistic regression.Results::One hundred and nineteen participants sustained 121 joint dislocations in 2014. The population-weighted incidence rate of joint dislocations of the trunk, arms, or legs was 0.22 (95% confidence interval [CI]: 0.16, 0.27) per 1000 population in 2014 (men, 0.27 [0.20, 0.34]; women, 0.16 [0.10, 0.23]). For all ages, previous dislocation history (male: OR 42.33, 95% confidence interval [CI]: 12.03–148.90; female: OR 54.43, 95% CI: 17.37–170.50) and alcohol consumption (male: OR 3.50, 95% CI: 1.49–8.22; female: OR 2.65, 95% CI: 1.08–6.50) were risk factors for joint dislocation. Sleeping less than 7 h/day was a risk factor for men. Compared with children, women aged ≥15 years (female 15–64 years: OR 0.16, 95% CI: 0.04–0.61; female ≥65 years: OR 0.06, 95% CI: 0.01–0.41) were less likely to sustain joint dislocations. Women with more than three children were at higher dislocation risk than women without children (OR 6.92, 95% CI: 1.18–40.78).Conclusions::The up-to-date data on joint dislocation incidence, distribution, and risk factors can be used as a reference for national healthcare, prevention, and management in China. Specific strategies for decreasing alcohol consumption and encouraging adequate sleeping hours should be developed to prevent or reduce dislocation incidents.Trial Registration::Chinese Clinical Trial Registry, ChiCTR-EPR-15005878.