Objective To investigate the clinical effect of surgical treatment of acetabular fractures. Meth-ods According to Letoumel and Judet typing, 17 cases of posterior wall fractures, 5 cases of transverse fractures, 3 cases of anterior wall fractures, 2 cases of anterior column fractures,5 cases of transverse and posterior wall fractures, 2 cases of posterior column and wall fractures, 2 cases of T-type fractures, 1 case of anterior and hemi-transverse fractures and 1 case of fractures of both column). Kocher Langenbeck (K-L) approach was applied in 30 cases, ilio-inguinal approach in 7, and combined approaches (K-L plus ilioinguinal) in 1. Results According to Matta evalua-tion, anatomical reduction(displace < 1 mm) was applied in 30 patients. Satisfactory reduction(displace 2～3 mm) was attained in 6 patients, unsatisfactory reduction(displace >3 mm) was in 2 patients. 38 patients were followed up for 6～48 months (mean: 25 months). The hip function was evaluated according to the modified Postel-D, Aubigne score and rated as excellence in 31 patients(81.5%), good in 5 patients(13.1%), fair in 1 patient(2.6%) and poor in 1 petient(2.6%). The excellent and good rate was 81.5%. Conclusions It is the important guarantee to elevate the therapeutic efficacy of acetabular fracture that shoud be correcdy analyze the fracture displacement and type, choose proper surgical approach, have good restitution implement and operate at the right moment. The quality of surgical reduction has a close correlation with the clinical results.

Skeletal muscle has high regenerative capability. It is able to regenerate completely after acute traumatic damage, while the repairing process often accompanied by fibrosis in the chronic degenerative conditions such as muscular dystrophy and repeated muscle fiber damage. Through in-depth study on the mechanisms of skeletal muscle fibrosis in the past decade, it has been found that a variety of cells and regulatory molecules involved in the process, especially muscle satellite cells-derived myofibroblasts, transforming growth factor β (TGF-β) and other fibrosis promoting growth factors. This review focused on the cellular and molecular mechanisms of the skeletal muscle fibrosis and relevant antagonistic strategies.

Objective To observe the effect of electromyographic (EMG) biofeedback on lower limbs motor function in stroke patients with hemiplegia. Methods 60 stroke patients with hemiplegia were divided into treatment group (n=30) and control group (n=30). Both groups accepted exercise therapy, and the treatment group accpted EMG biofeedback in addition. They were assessed with Fugl-Meyer Assessment (FMA), Berg Balance Scale (BBS), and Barthel Index (BI) before and 4 weeks after treatment. Results There was no significant difference between 2 groups in the scores of FMA, BBS and BI before treatments (P>0.05). All the scores significantly improved after treatments in both groups (P<0.05), and improved more in the treatment group than in the control group (P<0.05). Conclusion Electromyographic biofeedback can further improve lower limbs motor function, balance and activities of daily living of stroke patients with hemiplegia.

Objective To research the mechanism or pathway through which Substance P(SP) inhibits r-aminobutyric acid(GABA) activated currents in bullfrog dorsal root ganglion(DRG) neurons.Method The experiment was conducted on freshly isolated bullfrog dorsal root ganglion neurons using a whole-cell patch-clamp technique.Results SP could caused a slow inward current when SP was applied to DRG neurons;SP could inhibits GABA-activated currents;The inhibition could be reduced largely when protein kinase C(PKC) inhibiter,1-(5-isoquinolinesulphorry)-2-methylpiperazine(H-7), was dialyzed in cell body.Conclusion The SP ton inhibit GABA-activated currents through protein kinase C.

Objective To evaluate the value of 2D ultrasound and elastic strain ratio (SR) in diagnosis of thyroid nodule by fine needle aspiration (FNA).Methods 196 thyroid nodules were analyzed retrospectively with 2D ultrasound,elastography and FNA results,pathology results as the golden standard.A receiver operating characteristic (ROC) curve was used to identify the best cut-off point of SR.The Logistic regression analysis was used to evaluate the variables effectiveness on age,nodule echo,calcification and SR.Tried to discuss how to use SR before or after US-FNA in diagnosis of thyroid nodule.Results The SR of the malignant nodules group was significantly different from the benign nodules group,and the best cut-off point was 0.5 with sensitivity 91.7％,specificity 90.2 ％ and accuracy 90.8 ％.The Logistic analysis results were SR,age,echo,calcification according to the odds ratio.SR can screened nodules without puncture necessary before FNA,and increase the FNA sensitivity,specificity and accuracy after FNA.Conclusions SR has good application value in diagnosis thyroid malignant tumor.SR can reduce unnecessary FNA and make a supplementary diagnosis of FNA.

Objective To explore the inhibitory effect of pulsed ultrasound on skeletal muscle fibrosis after injury.Methods Thirty elderly male rats with gastrocnemius muscle injury were divided into an ultrasound group (UG) and a control group (CG) using a random number table.The injured muscles in the UG were treated using pulsed ultrasound (frequency 1 MHz,average strength 40 mW/cm2,duty cycle 20％) for 10 min daily from day 3 after the injury.The CG was given no treatment.On days 3,7,14,21 and 28 after the injury,histological and immunohistochemical analyses of the gastrocnemius muscles of both groups were performed.Results The collagen fiber mean optical density of the muscles increased gradually after the injury and reached its peak on day 21.It was significantly lower in the UG than in the CG on each test day.The expression of α-SMA increased gradually after the injury,but it too remained significantly lower in UG than that in CG.Conclusion Pulsed ultrasound may reduce collagen formation and α-SMA expression in injured skeletal muscle,and then inhibit muscle fibrosis.

Objective To explore the effect of clinical nursing pathway(CNP)on allergic rhinitis in patients with subcutaneous immunotherapy.Methods One hundred and twenty patients with allergic rhinitis treated with subcutaneous immunotherapy were equally randomized into the observation group and the control group.The former group were managed with clinical nursing pathway and the latter received only routine nursing care.The curative effect of subcutaneous immunotherapy was compared between the two groups including local adverse reactions,treatment compliance,patients' satisfaction and quality of life.Results The scores by symptom assessment at time points of half a year,years 1,2 and 3 showed the symptoms at different time points between the groups were significantly different by the comparison between time and the interactive effect of main effect(F=678.24,P<0.01),and the symptoms in the two groups were both alleviated with the extension of treatment due to the compared time effect at F=47.16, P<0.01.The scores on the symptoms in the observation group were significantly lower than those of the control group at different time points(P<0.01).The experiment group was better than the control group in terms of local adverse reactions,treatment compliance, quality of life and patient's satisfaction(P<0.01)Conclusion Clinical nursing pathway can improve patient's compliance,improve immunotherapy,reduce adverse reactions and improve the quality of life of patients as well as patients' satisfaction.

Objective To study the change in sodium channel current(ⅠNa)in the developement of the left ventricular hypertrophy in spontaneously hypertensive rat(SHR).Methods ⅠNa and membrane capacitance(MC)were measured in myocytes of 10,24 and 34-week SHR by the whole-cell patch-clamp technique.Systolic blood pressure(SBP)and left ventricular mass index(LVMI)were detemined.10-week old Wistar rats served as controls.Results LVMI and MC of SHR were significantly higher than those of Wistar rat(P0.05),however the density of ⅠNain 34-week SHR were higher than those of Wistar rat(-18.3?1.9)vs(-15.3?2.0)pA/pF,P

Objective To investigate the expressions ofα‐SMA in different esophageal stromal fibroblasts in esophageal car‐cinogenesis .Methods IHC method was uesd to detect the expression of α‐SMA protein in stromal fibroblasts of twenty normal e‐sophageal tissues ,eighty precancerous lesions and fifty esophageal carcinomas respectively .Three kinds of esophageal stromal fibro‐blasts were cultured primarily and cells immunohistochemical staining was carrired out after being purified .Expression of α‐SMA was detected by RT PCR .Results IHC results showed thatα‐SMA expressions in normal ,precancerous and cancerous lesions were of significant differences .RT‐PCR results showed thatα‐SMA expressions were different significantly among three kinds of fibro‐blasts .Conclusion Esophageal stromal fibroblasts were activated with carcinogenensis .AFs was possibly the origion of CAFs .

Objective:To explore the role of reactive oxygen species(ROS,i.e,H_2O_2 and O_2-) in regulation of respiratory rhythm in the medial area of nucleus retrofacialis(mNRF).Methods: Medullary slices of neonatal SD rats,including hypoglossal nerve(Ⅻn) and mNRF,were made according to Suzue's method.Simultaneous recording of the Ⅻn respiratory rhythmic activity(RRA) with suction electrode and the respiratory neuronal discharge were performed with whole cell patch in the mNRF on the brainstem slice in vitro.The effect of t-butyl hydroperoxide(tBHP) and ?-lipoic acid(?-LA) on the respiratory pacemaker neurons and respiratory rhythm in the mNRF were observed.Results: tBHP significantly decreased respiratory cycle(RC) and increased respiratory amplitude;?-LA significantly increased RC and decreased its amplitude.Meanwhile,?-LA significantly prolonged the action potential of the respiratory cadmium-insensitive pacemaker neurons and reduced its amplitude,but it had no significant effect on the cadmium-sensitive respiratory pacemaker neurons.Voltage steps and ramps showed that ?-LA inhibited both the transient and persistent sodium current of cadmium-insensitive pacemaker neurons.Conclusion: ROS has an excitatory effect on the respiratory rhythm and the cadmium-insensitive respiratory pacemaker neurons through modulating sodium current.