Objective To study the effects of skeleton musclular relaxation on nerve conduction and regeneration. Methods Musclocontaneous nerve injury model was established in 96 mice and the animals were divided into skeleton muscle relaxation, skeleton muscle relaxation and neurotrophic drugs, neurotrophic drugs and control group. Nerve conduction and regeneration were evaluated by electromyography; muscle weight and counting of distal regenerated myelinated nerve fibers. Results The velocity of nerve conduction and regeneration in skeletal muscle group was the same as that in skeleton muscle relaxation and neurotrophic group, and higher than that in control group. Conclusion Skeleton muscle can enhance nerve conduction and regeneration.

Objective To investigate the changes in severe burn patients with acute renal failure by using continuous blood purification(CBP). Methods Twelve severe bum patients underwent early CBP were included in this study. The levels of creatinine、blood urea nitrogen and interleukin-6(IL-6) in plasma were determined. The termperature and heart were also observed. Results After the treatment of CBP,the clinical symptoms were improved obviously ( P ＜ 0. 05 ). The levels of creatinine[( 376. 2 ± 24. 5 ) μ mol/L vs ( 145.2 ± 57. 1 ) μmol/L] 、sodium concentration [( 5.3 ± 1.6 ) mmol/L vs ( 4. 0 ± 0. 7 ) mmol/L] and potassium concentration [( 153. 4 ± 13.0 ) mmol/L vs( 140. 1 ±8.6)mmol/L]in plasma were all decreased evidently after the treatment of CBP. There were significant differences ( t = 2. 79,3.06,3. 01, P ＜ 0. 05 ). The levels of IL-6 and APACHE Ⅱ score were ( 264. 31 ± 122.42 ) ng/Land( 15.2 ±5.8) scores before treatment. While after treatment,their levels were(94. 18 ±63. 82) ng/L and(5.4 ±3. 6) scores. The difference was also significant ( t = 4. 17,3. 67, P ＜ 0. 05 ). In this study, 8 patients cured and 4 patients died. Conclusion CBP could eliminate inflammation factors effectively in severe burn patients with acute renal failure. It could afford a useful assist treatment to these patients.

Objective To investigate the clinical effects and safety of urethral anastomoses and ureteroscopy urethral realignment in the treatment of urethral straddle injury and catheter placement failure. Methods Ninety patients with urethral straddle injury and catheter placement failure were chosen and divided into A group (45 patients, choosing urethral anastomoses) and B group (45 patients, choosing ureteroscopy urethral realignment). The operation time, intraoperative blood loss, hospital staying time and peri-operation complications in both groups were compared. Results The operation time, intraoperative blood loss, hospital staying time in B group were significantly lower than those in A group: (26.15 ± 10.41) min vs. (71.93 ± 14.50) min, (22.37 ± 7.41) ml vs. (50.70 ± 13.25) ml, (3.22 ± 0.97) d vs. (5.19 ± 1.43) d, P<0.05. After 6 months′follow-up, the clinical indicators in peri-operation period of B group were significantly better than those in A group (P<0.05). The complications incidence in B group was significantly lower than that in A group: 2.22%(1/45) vs. 13.33%(6/45), P <0.05. Conclusions The technology of ureteroscopy urethral realignment in the treatment of urethral straddle injury and catheter placement failure can efficiently shorten the operation time, reduce the degree of trauma and accelerate the rehabilitation process, and it is helpful to reduce the risk of complications in peri-operation period.

There are many noise signals in original laser induced breakdown spectroscopy (LIBS) spectra.To explore the effect of spectral pretreatment on LIBS information by different filter methods, the LIBS spectra of Pb-polluted cabbage in wavelength range of 400.45-410.98 nm was investigated and preprocessed by adjacent averaging, Savitzky-Golay (S-G) and fast Fourier transformation (FFT).Then partial least square (PLS) model was established for evaluating the spectral treatment effect.The result showed that the root mean square error of prediction (RMSEP) and average relative error of S-G method were 0.26 and 3.7%, suggesting a superior smoothing effect than other methods.Experimental results indicated that an appropriate filtering method could help to improve the spectral quality and raise the precision of model checkout.

Heavy metal residue in vegetables is a big concern in the whole world.The aim of this work is to explore the effect of multivariable selection on analyzing Cd in Chinese cabbage polluted in lab by collecting the spectra of laser induced breakdown spectroscopy (LIBS) from the samples.At the same time,the actual Cd content in samples was obtained by anodic stripping voltammetry (ASV).The LIBS spectral range in partial least square (PLS) model was screened by standard normal variable transformation (SNV),first derivative (FD),second derivative (SD) and center treatment (CT) for preprocessing spectra and the optimized method was used for the analysis of interval partial least square (iPLS) and synergy interval partial least square (SiPLS).The results indicated that the method of CT was the best as a comparison with PLS,iPLS and SiPLS.And the intervals of wavelength were 214.72-215.82 nm,215.88-216.97 nm and 225.08 -226.35 nm by utilizing the optimized SiPLS.Here the root mean square error of cross validation (RMSECV) between real content and predicted ones was 1.487,the root mean squared error of prediction (RMSEP) was 1.094,the correlation coefficient (R) was 0.9942,and the average relative error (ARE) was 11.60％.The results displayed that LIBS could predict Cd in vegetables by multivariable selection of SiPLS and the accuracy could meet the requirement of rapid and green analysis of Cd in vegetables.

Objective To analyze the varus deformity of caput humeri and its correlation with fuuctional outcome of unstable proximal humeral fracture managed with locking plate.Methods The study involved 62 patients (24 males and 38 females,at age range of 32-83 years,mean 63.7 years)with proximal humeral fracture who were treated by open reduction and locking plate internal fixation from May 2008 to June 2010 and had full follow-up data.According to Neer classification,there were 11 patients with two parts fractures,41 with three parts fractures,five with four parts fractures and five with dislocation.Their clinical results were evaluated with Constant-Murley scores.ResultsThe mean duration of follow-up was 20.3 months (range,14-37 months),which showed fracture healing in all the patients.There were 11 patients with varus deformity of the caput humeri. The significant difference was found in Constant-Murley score of shoulder function ( P =0.045 ),forward elevation ( P =0.006 ) and abduction (P =0.022) between the varus and non-varus groups.But there was no significant difference in shoulder external rotation( P =0.08 ).The fracture types ( P =0.037 ) and varus deformity of caput humeri ( P =0.006) were closely correlated with the shoulder function between two groups.ConclusionsThe varus deformity of caput humeri mav be predictive factor for poor outcome of the unstable proximal humeral fracture. Restoration of humeral head-shaft alignment and sound reduction should be done as possible during operation.

Objective:To investigate the characteristics and perioperative management of hemophilia patients with fracture.Methods:Retrospectively, we analyzed 8 patients with hemophilia combined with fracture, who were admittted to our department from 2005 to 2013.Six patients were with hemophilia A and two with hemophilia B;Based on the severity of hemophilia, 2 cases were light, 3 moderate and 3 severe;Based on the location of fracture, 4 cases were femoral neck fractures, 1 femoral intertrochanteric fracture, 1 bilateral distal femur fractures, 1 tibiofibula fracture, and 1 humerus intercondylar fracture. Blood coagulation factor replacement therapy was conducted preoperatively, intraoperatively and postoper-atively, All the patients underwent closed or open reduction and internal fixation or joint replacement. Also, we analyzed the perioperative complications and observed whether the fracture healed.Results:The average age was 33.5 years (14 to 47 years); In 6 cases, fractures occurred at femur, accounting for 75%of all the fractures; Femoral neck fracture was treated by closed reduction and hollow screws fixation;Femoral intertrochanteric fracture, distal femur fracture, and tibiofibula fracture were treated by open reduction and internal fixation with plate;Humerus intercondylar fracture was treated by elbow joint replacement.Intraoperative bleeding was from 50 to 600 mL, an average of 262 mL;Perioperatively, the average use of FⅧ/activated prothrombin complex concentrates ( APCC) was 358 U/kg (125 to 554 U/kg) .Postoperatively, poor wound healing was observed in 2 patients, and the condition improved after symptomatic treatment; In patients with internal fixation, all the fractures united, and the average hea ling time was 14 weeks.No complications such as fixation loosening or rupture occurred after internal fixation.Conclusion:Hemophilia combined with fracture mainly occurred in the young, and the site of fracture was given priority to femur.With perfect preoperative preparation, on the basis of the replace-ment therapy, hemophilia combined with fractures was safe for surgical treatment, and postoperative frac-tures healing wasgood.But the risk of poor wound healing was high.

Objective To treat radial head fractures with open reduction and internal fixation, removal of the radial head and artificial joint replacement based on different fracture types to discuss the outcome of these methods and summarize optimal strategy for treatment of radial head fractures. Meth-ods A retrospective study was done on data of 47 patients with 48 radial head fractures treated in our de-partment from November 1999 to May 2008. Among them, nine patients were treated conservatively (all type Mason Ⅰ fractures), 28 treated with open reduction and internal fixation (one patient with type Ma-son Ⅰ fracture, 14 with type Mason Ⅱ and 13 with type Mason Ⅲ), eight with removal of radial head (three patients with type Mason Ⅲ fractures and five with type Ⅳ) and three with artificial joint replace-ment (all type Mason Ⅳ fractures). Results All patients were followed up for average 2.8 years (1-4.4 years). Two patients treated with artificial joint replacement were followed up for six months and three months respectively. According to the Mayo Elbow Performance Index, the excellence rate was 8/9 in conservative treatment, 82% (23/28) in open reduction and internal fixation, 6/8 in removal of the radial head and 3/3 in artificial joint replacement respectively. Conclusions The radial head fracture should be given anatomical reduction for early functional exercise. Conservative treatment can be used for type Mason Ⅰ fractures, open reduction and internal fixation for type Mason Ⅱ , type Mason Ⅲ fractures and part of type Mason Ⅳ fractures. The removal of radial head or mental prosthesis replacement are al-ternative for parte of type Mason Ⅳ fractures that can not attain stable fixation through open reduction and internal fixation.

OBJECTIVESTo investigate anatomical mechanism of the ulnar wrist pain caused by the compression of the dorsal branch of the ulnar nerve, and discuss the diagnosis and treatment of the compression.

METHODS40 sides of the upper extremities of adult cadavers were studied anatomically. The dorsal branch of the ulnar nerve and its relationship to the surroundings was dissected and observed grossly and microscopically. 13 cases of the compression of the dorsal branch of the ulnar nerve were treated and followed up.

RESULTSThe dorsal branch of the ulnar nerve was penetrated from the deep of the flexor carpi ulnaris muscle 5.6 approximately 6.8 cm proximally from the styloid process of the ulna, then ran along the ulna and divided into 2 approximately 3 big branches at the medial side of the head of the ulna. The transverse branch was apt to injury during wrist movement as it crossed or rounded the head of the ulna where it was close to the peristeam. Seven of 13 cases of the compression of the dorsal branch of the ulnar nerve were treated by local block, and 6 by surgical neurolysis. Nine cases of this group got showed good effect without recurrence after 4 months to 1 year follow-up.

CONCLUSIONThe anatomical basis of the compression of the dorsal branch of the ulnar nerve is repetitive traction to this nerve during wrist movement, and the compression of the transverse branch is the main cause of ulnar wrist pain. The compression of the dorsal branch of the ulnar nerve should be considered to the patients with ulnar wrist pain and abnormal sensation along the dorsal ulnar side of hand.

Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Ulnar Nerve ; anatomy & histology ; Ulnar Nerve Compression Syndromes ; diagnosis ; physiopathology ; therapy ; Wrist ; anatomy & histology

OBJECTIVE: To investigate the growth-inhibitory and pro-apoptotic effects of piroctone olamine (PO) on glioma cells and explore the underlying mechanism. METHODS: Human glioma cell lines U251 and U373 were treated with PO and the changes in cell proliferation were detected using CCK-8 assay and EdU assay. Clone formation assay and flow cytometry were used to examine the changes in clone formation ability and apoptosis of the treated cells. Mitochondrial membrane potential of the cells and morphological changes of the mitochondria were detected using JC-1 staining and a fluorescence probe, respectively. The expressions of mitochondrial fission protein DRP1 and the fusion protein OPA1 were determined with Western blotting. Transcriptome sequencing and differential gene enrichment analysis was performed, and the expression levels of PI3K, AKT and p-AKT in the treated cells were verified using Western blotting. RESULTS: CCK-8 assay showed that PO significantly inhibited the proliferation of U251 and U373 cells in a time- and dose-dependent manner (P < 0.001). EdU test showed that the proliferative activity of PO-treated cells was significantly decreased, and the number of cell colonies also decreased significantly (P < 0.01). PO treatment significantly increased apoptotic rates (P < 0.01), decreased mitochondrial membrane potential and caused obvious changes in mitochondrial morphology of the cells. Pathway enrichment analysis showed that the down-regulated genes were significantly enriched in the PI3K/AKT pathway, which was verified by Western blotting showing significantly down-regulated expression levels of PI3K, AKT and p-AKT in PO-treated cells (P < 0.05). CONCLUSION PO interferes with mitochondrial fusion and fission function through the PI3K/AKT pathway, thereby inhibiting the proliferation and increasing apoptosis of glioma cells.
Humans ; Glioma ; Mitochondrial Dynamics ; Phosphatidylinositol 3-Kinases ; Proto-Oncogene Proteins c-akt