BACKGROUND: A variety of cages for lumbar interbody fusion have been used, which have good mechanics and clinical effects. Conventional posterior fusion requires parallel implantation of two cages, but some researchers believe that single lumbar fusion cage in oblique way is also possible.OBJECTIVE: Through in vitro biomechanical tests, to find a method with favorable effect and little trauma by combination of percutaneous lateral oblique way into the single expansive lumbar fusion cage between the fixed-line operations.DESIGN, TIME AND SETTING: A randomized, controlled experiment was performed at the Shanghai Institute of Biomechanical Engineering between May 2005 and May 2008.MATERIALS: Expansile lumbar interbody fusion cage was simulated from B-Twin Cage (Disc-O-Tech, Israel). Fresh calf lumbar specimens were used.METHODS: Biomechanical tests were performed in 18 specimens of calf lumbar function spinal units (FSU), which were divided into 3 groups: 6 in control group, 6 in single cage groups and 6 in two-cage groups. The biomechanical tests of two experimental groups were performed following tests of intact specimens. Stiffness tests were conducted in the WE-10A MTS,including axial compression, flexion, extension, lateral bending, and torsion.MAIN OUTCOME MEASURES: Axial and torsion stiffness results of each group.RESULTS: The stiffness was greater in two-cage groups compared with single cage group in axial compression and extension, but significant differences were only found in axial compression and extension tests (P < 0.05). The torsion stiffness of single cage group was significantly greater than two-cage groups (P < 0.05).CONCLUSION: Percutanous lumbar interbody fusion by single expansile lumbar interbody fusion cage from lateral approach is feasible theoretically. Biomechanical properties of FSU with B-Twin cage are improved, which contributes a lot to lumbar stability. Compared with posterior approach of single cage, two-cage can provide better stiffness and stability but its torsion stability is lower.

BACKGROUND: Taohong Siwu Tang is made up of Taoren, Honghua,Danggui, Chishao and Chuangxiong. Paeoniflorin is one of the major effective components in Radix Paeoniae Rubra Extracts and Taohong Siwu Tang, and it can promote blood circulation and remove blood stasis and has the effect of anti-acute myocardial ischemia.OBJECTIVE: To compare the serum concentration of paeoniflorin in mice after intragastric administration (i.g.) of Radix Paeoniae Rubra extracts and Taohong Siwu Tang.DESIGE: Rndomized controlled observation.SETTING: Department of Pharmacy and Department of Basic Medicine,Hebei North University.MATERIALS: The trial was performed in the first laboratory of Department of Pharmacy, Hebei North University during February to June 2005.Eighty involved Kunming mice of either gender and of clean grade, with body mass of 18 to 22 g, were purchased from Experimental Animal Center, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences. Taoren, Honghua, Danggui, Chishao, Shengdi and Chuanxiong 6 Chinese herbs were all purchased from Zhangjiakou Institute of Traditional Chinese Medicine.METHODS: ①Blank serum was isolated from eight mice which were fasted for 12 hours. Control sample solution of paeoniflorin was added into blank serum. Acetonitrile was used to deposit protein, the solution was centrifugated and isolated ,and 20μL supernatant was taken to obtain regression equation. ② Seventy-two Kunming mice were randomized into Radix Paeoniae Rubra extracts group and Taohong Siwu Tang group, with 36 mice in each. After being fasted for 12 hours, the mice in each group were intragastric administration of Radix Paeoniae Rubra extracts and Taohong Siwu Tang, respectively and the concentration of paeoniflorin was 300 mg/kg.1 mL blood was taken respectively at 15, 30, 60, 90, 120 and 180 minutes after intragastric administration and prepared into serum sample (6 mice at each time point in each group). The time to peak and difference in peak concentration of serum paeoniflorin were compared between intragastric administration of Radix Paeoniae Rubra extracts and Taohong Siwu Tang.The concentration of paeoniflorin was measured with high-performance liquid chromatography (HPLC). Chromatographic condition: chromatographic column YWG-C18 (250×4.6 mm,10 μm). The mobile phase was methanolKH2PO4 (0.05 mol/L) (38∶62) at a flow rate of 1.0 mL/min. The detective wavelength was set at 230 nm. The column temperature was 25 ℃.MAIN OUTCOME MEASURES: Serum concentration of paeoniflorin after administration of Radix Paeoniae Rubra extracts and Taohong Siwu Tang in mice.RESULTS: Seventy-two mice were used for Radix Paeoniae Rubra extr acts and Taohong Siwu Tang tests, and all of them entered the stage of result analysis without deletion. ① Chromatographic isolation results: Paeoniflorin could be well isolated from other components. The linear range for detection of paeoniflorin was 5.40-646.0 μg/mL. The mean recovery rate was 93.6% and the limit of detection was determined as 1.08 mg/L. ②Comparison of concentration of serum paeoniflorin of mice between two groups: The concentration of serum paeoniflorin in the Radix Paeoniae Rubra extracts group and Taohong Siwu Tang group reached the peak at 30 and 60 minutes after intragastric administration, respectively. The peak concentration of paeoniflorin of Taohong Siwu Tang group was lower than that of Radix Paeoniae Rubraextracts group [(36.27±5.72) mg/L vs.(46.82±5.29) mg/L, P ＜ 0.01 )].CONCLUSION: The concentration of serum paeoniflorin is significantly decreased after intragastric administration. It was further confirmed the decreased concentration of the crude paeonifiorin in the mice sera might result from promotion of its metabolic conversion by other chemical components in the complex prescription. This result needs further investigation.

Objective To study whether closed reduction and interlocking intramedullary nailing will worsen the injured radial nerve associated with the fracture of humeral shaft.Methods Of the 353 patients with fracture of humeral shaft who received operation from January 2002 to January 2005,63 ones were complicated with preoperative injury to their radial nerve.A retrospective analysis was done of their physical examination records, operative records,X-ray films and results of the treatment.Eleven cases were treated with closed reduction and interlocking intramedullary nailing,and 52 cases with open reduction and internal fixation of plates and screws fol- lowed by exploration to the radial nerve.Chisquare test of PEMS 3.1 system was adopted to analyze the clinical data. Results The radial nerve was embedded by the fracture ends in nine cases(17.3%)of the 52 cases,and con- tused in the other 43 ones.In the 63 cases,The injured nerves recovered spontaneously 2 to 12 weeks postoperatively except in twn cases.All the eases got bony union 3 to 4 months after operation.Closed reduction and interlocking intramedullary nailing has hardly more harmful effects on the injured radial nerve assoeiated with the fracture of humeral shaft than open reduction and internal fixation of plates and screws followed by neural exploration.Con- clusion Closed reduction and interlocking intramedullary nailing is fit for the freatment of fractures of humeral shaft with radial nerve injury.

OBJECTIVE To study resistance and the change of Pseudomonas aeruginosa of respiratory system infection,and instruct the antibacterial medicine to use rationally.METHODS The respiratory system infection patients from Jun 2004 to Dec 2005 were investigated.To the results of MICs with 229 P.aeruginasa strains were analyzed.RESULTS From inspected 5411 phlegm samples derived from Jun 2004 to Dec 2005,bacteria from 2291 samples(42.34%) were examined out,from them 229 strains(10.00%) were P.aeruginosa. The sensitive rate to tobramycin,imipenem/cilastatin sodium,piperacillin sodium,amikacin sulfate,ceftazidime,cefoperazone/sulbactam(Sulperazon),et al was greater than 60%.CONCLUSIONS We should consider the mechanism of P.aeruginosa resistance in treatment of respiratory system infection patients,and guide the management of antibacterial using.

OBJECTIVE: This article discusses the clinical features and treatment methods of the inflammatory reaction associated with cochlear implants, and analyzes the possible pathogenesis and related factors. METHOD: We retrospectively analyzed postoperative inflammation cases from February 2002 to October 2013 among 825 cochlear implantation patients. Their symptoms, signs and treatment processes and outcomes were described and summarized. RESULT: Incidence of implants related inflammatory reaction was 1.58%. The onset time ranged from 2 months to 11 years post-operatively. There were 6 cases of implants related non-infectious inflammation, with an incidence of 0.73% (6 of 825). Post auricular swelling and subcutaneous non-infectious discharge were found in all these 6 cases. Pressure dressing with bandage and steroid, antihistamine medications was effective. There were 7 cases of post auricular infection, with an incidence of 0.85%, resulted from flap trauma or acute otitis media. Antibiotics and drainage was used for them to treat the infection, and rotation scalp flaps were used to cover the exposed device. Five of these cases were cured but cochlear implants had to be removed out in the other 2 cases of staphylococcus aureus infection. CONCLUSION Cochlear implantation surgery is safe and effective for profound deafness. However, the implants-related non-infectious and infectious inflammatory reaction impacts the effect of cochlear implants, even lead to removal of the implants.
Child, Preschool ; Cochlear Implantation ; Female ; Humans ; Infant ; Inflammation ; epidemiology ; Male ; Postoperative Complications ; epidemiology ; Surgical Wound Infection ; epidemiology

Objective To distinguish two Bithynia species,Bithynia fuchsiana and Bithynia robusta collected from Heng County,Guangxi Zhuang Autonomous Region,by using morphological and DNA barcoding methods. Methods The adult B. fuchsiana and B. robusta were collected from the biotope such as rivers,ditches and ponds in Heng County of Guangxi Zhuang Autonomous Region,China. The two species specimens were identified by measuring shell morphological parameters,compar?ing the characters of the male reproductive system,and using the COI gene barcoding technique and building phylogenetic tree. Results B. fuchsiana and B. robusta were similar morphologically in the shell appearance;they had the similar snail height, snail width,shape and male reproductive structure. The DNA sequence analysis showed that the COI gene of the two Bithynia species had low sequence divergence with 11 variation sites among 22 sequences. The length of the COI gene segment was 517 bp and no insertion sites and deletion loci after sequence edited. All individuals of the two species gathered to one clade in the phylogenetic tree based on COI gene. Conclusion According to the evidence of morphology and COI gene coding sequence,B. fuchsiana and B. robusta from Heng County,Guangxi Zhuang Autonomous Region,are likely to be the same species.

Objective To know the sleeping quality of clinical nurses in Urumqi, and analyze the influencing factors, put forward the corresponding countermeasures for different factors to improves the sleeping quality. Methods Randomly selected 407 nurses in clinical departments as the research objects in Urumqi top three hospitals, using the Pittsburgh sleep quality index scale (PSQI) and general situation questionnaire to investigate, and then analyzed the results of the survey. Results The incidence rate of sleeping disorders in emergency nurses was the highest (80.00%), followed by pediatric, intensive department, internal medicine, surgical department, operating room, outpatient and others was the lowest (39.02%). Gender (t=-2.015, P =0.045), age (F=8.509, P =0.000), establishment(F=3.609, P =0.013) were the influence factors of PSQI scores. Only the difference of the scores of hypnotic drugs between different ethnic groups was significant, P<0.05, while the others had no significant difference, P>0.05. Conclusions Poor sleeping quality of nurses existed in every department, its sleeping quality status, department, gender, age and establishment have certain correlation, interventions should be strengthened, to improve the overall level of sleeping.

Objective To investigate the prognosis of two subtypes of subacute cutaneous lupus erythematosus (SCLE). Methods Forty patients with subacute cutaneous lupus erythematosus were followed-up for 3 to 14 years. The clinical and laboratory findings, the response to treatment and the prognosis in these cases were comparatively analyzed. Results During the follow-up period, the patients with annular erythema subtype of SCLE showed recurrent annular skin lesions and mild systemic manifestations. Some patients gradually developed sicca symptoms. On the other hand, most patients with papulosquamous subtype of SCLE developed systemic LE manifestions. 21.7％ of the patients in the annular erythema group had mild nephritis which could be controlled by lower dose of corticosteroids and no patients died. However, 64.7％ of the patients in the papulosquamous group had moderate to severe lupus nephritis, which required higher dose of corticosteroids or immunosuppressive agents to control. Among them, One patient died and 3 patients developed uremia. Conclusion Annular erythema subtype of SCLE is milder and has a better prognosis than that of papulosquamous subtype.

Immune cells that undergo increased apoptosis include lymphocytes and macrophages,yet the apoptosis of neutrophils is decreased in sepsis.Increase in apoptosis has also been reported in non-immune cells such as gastrointestinal cells,epithelial cells of lung as well as endothelial cells.The altered apoptotic cell death may contribute to the initiation and aggravation of immune and organ dysfunction in sepsis.Elucidating the changes and mechanism of apoptosis and taking measures to control apoptosis may be an effective strategy for the treatment of sepsis.

Objective To investigate the hyperglycemic effect on ultrastructural morphology and intercellular adhension molecule 1(ICAM 1) expression of BBB. Methods Hyperglycemia model was established by intravenous injection of streptozocin in SD rats. A dynamic observation on the changes of the ultrastructure and the ICAM 1 expression on endothelium of BBB in SD rats with hyperglycemia for 3 days to 8 months was carried out by transmission electron microscopy and immunohistochemical method. Results Swelling was slight in endothelium of BBB of rats with hyperglycemia for 3 days, became obvious and occurred in endfoot of astrocyte for 1 to 2 months, and some microthrombi appeared in cavity of capillary with various malformation and apoptosis was found in endothelium of BBB and neuron surrounding abnormal capillary for 3 to 8 months. With immunohistochemical study, ICAM 1 was expressed sparsely on endothelium of BBB in 3 days after injection of streptozocin, became markedly strong in 3 months, and progressed further in 6 to 8 months. There was no changes on BBB in both SD rats and negative controls. Conclusion Long term hyperglycemia could cause obvious ultrastructural changes of BBB, associated with ICAM 1 expression on endothelium of BBB induced by hyperglycemia