Objective:To evaluate the effect of iliac bone graft and radial forearm flap in the reconstrucion of maxilla.Methods:Maxilla defects were reconstructed using iliac bone graft and radial forearm flap in 4 patients.The effects were evaluated clinicaly.Results:In all the 4 cases,palatal defects resulted from maxillectomy were optimally reconstructed with non-vascularized iliac graft and radial forearm flap.The masticatory function of the upper jaw,intelligible speech,swallow and natural facial appearance were recovered.As a result,quality of life of the patients was improved.Conclusion:Iliac bone graft and radial forearm are feasible in the reconstruction of maxilla defects.

Objective To investigate the influence of impulsivity on the functions of the conflict monitoring and the conflict resolution process for heroin addicts.Methods 80 heroin addicts were drawn randomly using simple random sampling method and finished Opioid Addiction Severity Inventory ( OASI ) and Barratt Impulsivity Scale ( BIS-11) .High impulsivity group( 7 females of 22) and low impulsivity group (8 females of 21) were divided according to 27%of the total BIS-11score followed the grouping method in psychometrics.Then the event-related potentials (ERPs) technique with the classical color-word Stroop task was used to reveal the influence of impulsivity on the executive function for heroin addicts.Results ( 1) The scores of motor impulsivity(23.00±1.73) and no-plan impulsivity(27.77±3.22) were higher in high im-pulsivity group than those in low impulsivity group(19.31±2.80,23.38±3.59)(P<0.01);and there was posi-tive correlation between impulsivity and addiction severity( r=0.415, P<0.05).(2) The behavioral data showed significant Stroop interference effects in both groups(P<0.01).(3) ERPs data showed that there were significant incongruent-N450 and SP effects in the low impulsivity group,whereas incongruent N450 and SP effects disappeared in high impulsivity group ( Low impulsivity group incongruent vs congruent condition N450:(2.82±3.09)μV vs (4.51±2.77)μV, P<0.05; SP:(3.54±1.25)μV vs (2.84±1.03)μV, P<0.05;High impulsivity group incongruent vs congruent condition N450:(4.98±4.10)μV vs (3.39±3.31)μV, P<0.05;SP:(3.43±3.84)μV vs (4.66±4.53)μV, P<0.05).Conclusion The brain time-interval change of executive function such as the conflict monitoring and the conflict resolution process is influenced by the im-pulsivity levels of heroin addicts.

0.05) . The sensory block reached T7 in levobupivacaine group and T6 in bupivacaine group respectively. The motor blocked was somewhat more intense in bupivacaine group. Conclusion The efficacy and safety of epidural anesthesia with levobupivacaine and bupivacaine are comparable.

Objective: To research the expression of PTEN and its influence on biological ability in breast cancer cell in vivo. Methods: PTEN-shRNA plasmid was transtected into M231 breast cancer cells to knock down the expression of PTEN. The changes of PTEN expression, proliferation, adhesion and metastasis of PTEN knocked down cell were tested by western-blot, colony formation, adhesion and invasion assay. Results: PTEN-shRNA was successfully transfected into M231 cells and it inhibited PTEN expression efficiently.The capabilities of colony formation, migration and invasion of transfected cell were much greater than those of the controlling cell line. But the transfected cells were more difficulty in adhesion than the scrambled ones. Conclusion: PTEN genecan enhance the adhesion, but restrict the proliferation, migration of breast cancer cells in some degree, so that inhibit the development of the breast cancer. PTEN loss can be a prognostic factors for the patients with breast cancer.

BACKGROUND: Posterior internal fixation and fusion system is a main method for chronic back pain caused by intervertebral disc degeneration, but more postoperative adverse reactions occur. Dynamic stabilization system can reduce adjacent-segment degeneration, and theoretically, repair intervertebral disc degeneration.OBJECTIVE: To investigate the efficacy and safety of K-rod dynamic stabilization system in the repair of lumbar degenerative diseases.METHODS/DESIGN: We conducted a prospective, single-center, self-controlled, clinical trial at the Orthopedic Hospital of Shenyang, China. Sixty-seven patients with lumbar degenerative diseases were enrolled, and treated with K-rod dynamic stabilization system. All patients were followed for 2 years. The primary outcome was the changes in the Oswestry dysfunction index scores at baseline, 3, 6, 12 and 24 months postoperatively. The secondary outcomes were the ratio of height vertebral space to body and lumbar lordotic angle at baseline, 3, 12 and 24 hours postoperatively; the visual analogue scale scores for back pain and morphological changes in the lumbar vertebrae on x-ray preoperatively and 3, 6, 12 and 24 months after surgery; the incidence of adverse reactions at 3, 6, 12 and 24 months postoperatively.This trial has been registered at ClinicalTrials.gov (identifier: NCT03214042). The study protocol has been approved by the Ethics Committee of Orthopedic Hospital of Shenyang. All protocols will be performed in accordance with the Ethical Principles for Medical Research Involving Human Subjects in the Declaration of Helsinki. Written informed consent was provided by each patient after they indicated that they fully understood the treatment plan.DISCUSSION: This trial was designed to investigate the efficacy and safety of K-rod dynamic stabilization system for lumbar degenerative diseases, thus providing reference for its clinical application. Partial results demonstrated that the Oswestry Dysfunction Index and Visual Analogue Scale scores at 24 months postoperatively were significantly improved (P < 0.01), but the ratio of height vertebral space to body and lumbar lordotic angle did not differ significantly at different time points (P > 0.01). These results suggest that K-rod dynamic stabilization system can alleviate pain and improve lumbar function in the patients with lumbar degenerative diseases.

Deafness ; Diabetes Complications ; diagnosis ; epidemiology ; Diabetes Mellitus ; epidemiology ; Hearing Loss ; diagnosis ; etiology ; Humans

Case based learning/problem-based learning ( CBL/PBL ) is a new teaching method based on traditional medical education methods.In order to conquer the deficiency of traditional education methods in autonomous study motivation and ability of knowledge integration, CBL/PBL has been introduced into vascular surgery teaching procedure since 2006.The quality and effort of CBL/PBL compared with lecture-based learning ( LBL ) were evaluated and scored. The outcome of this teaching innovation shows CBL can arouse students' desire in autonomous study and enhance their ability in clinical analysis.But, its superiority is difficult to develop in the current medical education system.

Hepatic eosinophilic granuloma (HEG) is a rare benign liver disease,which belongs to histocytosis.Preoperative diagnosis of HEG was difficult because its clinical manifestation was not characteristic.In this article,the clinical data of 1 patient with HEG who was treated at the Jinhua Municipal Central Hospital of Zhejiang Province in September 2012 were retrospectively analyzed,and the diagnosis,differential diagnosis and treatment for HEG were investigated.

Objective To observe the change of neuropeptide of the infant patients with post infection cough (PIC) and explore the possible pathogenesis and diagnostic value.Methods Fifty-two cases with PIC in our hospital were selected as PIC group,while thirty infant patients with bronchopneumonia as pneumonia group.Phlegm cells classification and substance P(S P),neurokinin(NKA),neurokinin (NKB),calcitonin gene-related peptide (CGRP) concentration of the patients in both groups were compared.Results Phlegm cells classification of the two groups showed that,compared with the PIC group,the neutrophils,macrophages,and lymphocytes of the infant patients in the pneumonia group were obviously higher (P ＜ 0.05).After anti-infection treatment,the neutrophils,macrophages and lymphocytes of the infant patients in the pneumonia group were obviously lower(P ＜ 0.01).The phlegm cells classification of the PIC group had not changed significantly before and after treatment (P ＞ 0.05).After treatment,the phlegm cells classification of both groups had no significant difference (P ＞ 0.05).During the progress of treatment,there was no evident change for the eosinophils (P ＞ 0.05).Neuropeptide of the two groups showed that,before treatment,the SP and CGRP of the patients in the PIC group were (538.4 ±432.2) ng/L,(123.6 ±70.2) ng/L,and that in the pneumonia group were (613.2 ± 345) ng/L,(156.2 ± 82.6) ng/L.There was no significant difference (P ＞ 0.05).After treatment,the SP and CGRP of the PIC group were (552.8 ± 421.7) ng/L,(133.5 ± 81.3) ng/L,and there was no significant difference (P ＞0.05).While the SP and CGRP of the patients in the pneumonia group were (156.2 ± 131.2) ng/L,(741.2 ± 35.4) ng/L,they were obviously lower (P ＜ 0.01).There was statistical difference compared with the PIC group after treatment (P ＜ 0.01).The NKA and NKB had not changed significantly before and after treatment.Conclusion Airway neurogenic inflammation mediated SP and CGRP plays a key role in the acute and chronic infections.The increase of SP and CGRP is closely related to the morbidity of PIC.So SP and CGRP is a reference index for early detection of PIC.

AIM:To explore the effects of miR-21 on biological behavior of colon cancer cells and their sensi-tivity to epidermal growth factor receptor monoclonal antibody cetuximab .METHODS:Lentiviral vectors were constructed to generate up-and down-regulations of miR-21 lentiviruses (LV-miR-21 and LV-anti-miR-21, respectively), and the cor-responding negative control viruses (LV-miR-21 NC and LV-anti-miR-21 NC, respectively) were also constructed.The vi-ruses were used to infect human colon cancer RKO cells .The changes of the miR-21 expression level , the cell prolifera-tion, the colony-forming ability, the cell apoptosis and the sensitivity of the cells to cetuximab were detected by real -time PCR, MTT assay, soft agar colony assay , flow cytometry and CCK-8 assay.RESULTS: The lentivirus titers of LV-miR-21, LV-miR-2 NC, LV-anti-miR-21 and LV-anti-miR-21 NC were 3.0 ×1012 TU/L, 6.0 ×1011 TU/L, 2.0 ×1012 TU/L and 8.0 ×1011 TU/L, respectively.The infection efficiency was over 80% by the observation of green fluorescence .The miR-21 expression level , the cell proliferation , and the colony-forming ability in LV-miR-21 group were significantly higher than those in LV-anti-miR-21 group.The early apoptotic rate and the inhibitory rate of cetuximab for the cells in LV-anti-miR-21 group were higher than those in LV-miR-21 group.CONCLUSION: miR-21 promotes the proliferation of colon cancer cells.Down-regulation of miR-21 enhances the sensitivity of the colon cancer cells to the targeted therapy drug cetuximab.