Objective To introduce a modified intraoral fixed appliance for maxillary protraction and to investigate the dentofacial changes of anterior crossbite after the therapy. Methods Twelve patients with anterior crossbite were treated with modified protraction therapy. The cephalometric analysis was used to evaluate the changes. Results After active treatment, the overjet correction was 6.55 mm. A point moved forward 2.6 mm. Pg dislocated backward 5.65mm with MP-FH increased 1.7?. Esthetics was greatly enhanced. Conclusion The modified maxillary protraction is recommended for easy fabrication, good retention, wearing comfortably and cleaning easily. Esthetics is greatly enhanced.

Objective To investigate two techniques and outcome in repairing facial concave deficits.Methods Eleven patients with facial concave deformity were included in this study:nine were treated with autologous fat granule injection,1,3 and 5 patients were given fat granules injection fourth,twice and once,respectivly.The other 2 patients were repaired with homolateral temporal fascia flap.Results The implantation by using autologous fat granules in all 9 patients showed excellent results.Homolateral temporal fascia flaps were used in 2 cases,one of which was formed hematoma after operation and scavenged thereafter.All the patients had satisfactory results.Conclusion Both approaches well rehabilitate patients' facial contour,and thus are capable of repairing moderate or minimal facial concave deficit and worth recommendation.

0.05).The clinical outcomes were evaluated according to improvement HSS knee joint function scoring,and the score showed an average of 87.5 points (range,71-97).[Conclusion]The dual-incision technique resulted in accurate fracture reduction with low tissue complication rate,and the medial and lateral plating treatment achieved improved stabilization which enabled mobilization of the knee joint to start immediately after surgery.Medial and lateral plating treatment with dual incisions is a safe and effective technique for Schatzker type Ⅴ tibial plateau fractures.

Objective To investigate the effect of quinone oxidoreductase 1 (NQO1) and quinone oxidoreductase 2 (NQO2) expression in the prognosis of ovarian carcinoma.Methods The two online databases were used to perform the online analysis on the NQO1 and NQO2 mRNA levels and prognosis of ovarian cancer patients,1 306 cases of ovarian cancer were performed the Kaplan-Meier analysis by using the KaplanMeier plotter (K-M plotter);578 cases of ovarian cancer in the TCGA database were performed the univariate COX regression survival analysis.Results The K-M plotter analysis showed that the NQO1 expression level had no obvious correlation with the prognosis of ovarian cancer (P>0.05),the higher the NQO2 level,the better the prognosis (HR=0.83,P=0.006 2).The COX regression survival analysis showed that the NQO1 expression level had no obvious correlation with the prognosis of ovarian cancer(P>0.05),the higher the NQO2 level,the better the prognosis (P=0.038 29).Conclusion NQO2 expression level has no obvious correlation with the prognosis of ovarian cancer,moreover the higher the NQO2 expression level,the better the clinical prognosis of ovarian cancer.

Objective To observe the indications for early surgical trea tment of thoracolumbar burst fracture (TLBF). Methods 139 cases who had been def initely diagnosed as TLBF were analyzed retrospectively. They were divided into 2 groups: operation and non-operation. 47 patients had non-surgical treatment, such as bed-rest plaster brace. 92 patients had surgical treatment with plate and root screw. Spinal cord functions were evaluated according to the ASIA metho d. Results All patients were followed up for 6 months to 10 years (averaged 6 y ears and 2 months). Their average kyphosis angle measured with Cobb method was 2 3.5? before the operation and 8.5? after the operation. The average degree o f middle column posterior convexity was 25%～85% before the operation (averag ed 33%) and 0～53% after the operation (averaged 12%). The average height of anterior column was 45% before the operation and 85% after the operation. T he average degree of spinal stenosis was 30%～85% before the operation (avera ged 55%) and 0-50% after the operation (averaged 20%). There were more case s whose neural function recovered to grade E in the operation group than in the non-operation group (P

Objective To investigate the role of NF-κB pathway in the development of intrathecal(IT)platelet-activating factor (PAF)-induced hyperalgesia in rats. Methods Sixty-four male SD rats (200-250 g) in which intrathecal catheters were successfully implanted without complications were randomly divided into 6 groups:group Ⅰ received artificial cerebro-spinal fluid (ACSF) 10 μl IT (n = 16); group Ⅱ received PAF 10 μg in ACSF 10 μl IT; group Ⅲ received 0.1% DMSO 2 ml intraperitoneally (IP) (n = 8); group Ⅳ, Ⅴ, Ⅵ received IP SC-514 (a selective IKK-β inhibitor) 10, 50, 100 mg/kg in 0.1% DMSO 2 ml respectively at 2 h before IT PAF. Paw withdrawal threshold to mechanical stimulation (PWMT) and paw withdrawal latency to thermal stimuli (PWTL) were measured before (baseline) and at 5, 15, 30, 45, 60 min and then every 30 min for another 4 h after IT administration. The animals were killed after the last pain threshold measurement at 5 h after IT PAF. The lumbar segment (L4-6) of the spinal cord was removed for determination of TNF-α and IL-lβ content (by ELISA).Results lntrathecal PAF induced tactile allodynia and thermal hyperalgesia rapidly, increased the expression of TNF-α and IL-lβ in lumbar spinal cord. Pretreatment with SC-514 attenuated PAF-induced hyperalgesia and inhibited the increase in TNF-α and IL-1β expression in the spinal cord. Conclusion NF-κB is involved in intrathecal PAF-induced hyperalgesia.

BACKGROUND:The umbilical cord blood is rich of mesenchymal stem cells, which can be used as a new source of seed cells in tissue engineering. OBJECTIVE:To compare two methods for culturing, expanding and purifying the mesenchymal stem cells in vitro isolated from the human umbilical cord blood. METHODS:The ful-term birth cord blood of 40 cases was col ected under sterile conditions with heparin anticoagulation. Ficol density gradient centrifugation was used to isolate the mononuclear cells from the umbilical cord blood. The cases were randomly divided into two groups according to the different culture media. Twenty cases of umbilical cord blood were cultured in MesenGro human mesenchymal stem cells culture medium (group A), and the remaining 20 cases of umbilical cord blood were cultured in Dulbecco’s modified Eagle’s medium (group B). The occurrence time of fusiform mesenchymal stem cells and cell colony, culture time and the number of primary cells in the two groups were compared. Cells which grew well were selected to detect the surface markers by flow cytometry. RESULTS AND CONCLUSION: The mean occurrence time of fusiform mesenchymal stem cells and cell colony, culture time and number of primary cells in group A were better than those in group B (P < 0.01). The strong expression of the surface markers of mesenchymal stem cells (CD73 and CD105) was found by flow cytometry, of which the positive rate was 99.1%. No expression of the surface markers of hematopoietic stem cells (CD45 and CD34) was seen, of which the negative rate was 99.3%. The number, morphology, growth rate and culture time of umbilical cord blood mesenchymal stem cells cultured in MesenGro human mesenchymal stem cells culture medium were better than those cultured in Dulbecco’s modified Eagle’s medium. Cells cultured in MesenGro human mesenchymal stem cell culture medium can better express surface markers of mesenchymal stem cells.

Objective To investigate the expression and effect of FOXC2 (forkhead box C2) and Vimentin in gastric carcinoma tissues .Methods To detect the protein expression of FOXC2 and Vimentin in 20 normal gastric tissues and 65 gastric carcinoma tissues with immunochemistry .Results FOXC2 and Vimentin were highly expressed in all gastric carcinoma tissues .In all gastric carcinoma cases ,the FOXC2 expression rate was 41 .53% ,the rate of Vimentin was 35 .38% .The average expression rates of FOXC2 and Vimentin in TNM ( Ⅲ + Ⅳ ) group were significantly higher than those in TNM (Ⅰ + Ⅱ ) group ,respectively (58 .60% vs .27 .78% ,P=0 .012 ;55 .88% vs .29 .03% ,P=0 .018) .The expression rates of FOXC2 and Vimentin in lymph node transfer group were statistically higher than those in no lymph node transfer group (51 .72% vs .22 .22% ,P=0 .013;41 .20% vs . 14 .80% ,P=0 .010) .The correlation between FOXC2 and Vimentin was positive (P= 0 .037) .Conclusion It is possible that FOXC2 and Vimentin are involved in the transformation of epithelial cells into the mesenchymal cells .And they may play an impor-tant role in the metastasis of gastric carcinoma .

The ultrasonographic appearances of osteosarcomas and the roles of ultrasonography in the diagnosis and surgical staging of osteosarcomas were investigated. A comparative study was performed on 45 cases of osteosarcomas by ultrasonography and radiography. Bony changes, periosteal reaction and soft tissue mass were evaluated for each lesion. The results showed that ultrasonography revealed a solid mass around bone in 42 patients, bone destruction in 24 patients and periosteal reaction in 16 patients. Plain radiographs showed bony changes in 44 patients and no bony change in remaining one patient, shadowing of soft tissue swelling in 30 patients, and pulmonary metastases in 3 patients. Surgical biopsy and pathological examination confirmed osteosarcoma in all 45 patients. Soft tissue mass was confirmed in 42 patients surgically. The diagnostic accuracy of soft tissue masses by ultrasonography and radiography was 100 % (42/42) and 71.4 % (30/42), respectively. The positive rate of ultrasonography and radiography in displaying bony changes was 53.3 % (24/45) and 97.8 % (44/45), respectively. In conclusion, in the detection of soft tissue mass of osteosarcoma, ultrasonography is superior to radiography, and in displaying bony changes of osteosarcomas, radiography is superior to ultrasonography. So it may come to a conclusion that plain radiography combined with ultrasonography can completely display the bony and soft tissue lesion of osteosarcomas.

OBJECTIVE: To compare the CT scan results in patients with deviation of nasal septum and normal adults and to explore its values in evaluating the state of nasal ventilation. METHOD: Twenty-six patients with deviation of nasal septum and 15 normal people were recruited in the study. The nasal airway from anterior nostril to posterior nostril was evaluated with PhlipsTomos scan AV Expander Elspiral scanner. The indexes of nasal ventilation was measured with the image-analysis software. The results of CT scan between patients with deviation of nasal septum and normal people was compared. RESULT: (1) There was obvious difference between patients with deviation of nasal septum and normal people in the NMCSA, IMCSA, DNCAT and DICAT. There was obvious difference between patients with deviation of nasal septum with obstruction in the opposite side and normal people in the ONMCSA and ODNCAT. There was obvious difference between patients with deviation of nasal septum without obstruction in the opposite side and normal people in the ODNCAT. (2) In the patients with deviation of nasal septum, between nasal minimal cross sectional area and inferior turbinate's maximum cross sectional area, there is obvious relation, r = -0.394, P < 0.05. CONCLUSION CT is one kind of objective inspection method in evaluating the state of nasal ventilation. With the measurement of the nasal morphology and functional index, we can understand the state of nasal ventilation more comprehensively. And with this, the treatment and diagnosis of disease with nasal obstruction will be more scientific.
Adolescent ; Adult ; Case-Control Studies ; Female ; Humans ; Male ; Middle Aged ; Nasal Obstruction ; diagnostic imaging ; physiopathology ; Nasal Septum ; abnormalities ; diagnostic imaging ; Pulmonary Ventilation ; Tomography, X-Ray Computed ; Young Adult