Objective:To evaluate the effect of autogenous graftin g material of the maxillary tuberosity harvested by Mx grafter in the application of immediate implantation . Methods: 25 implants were i mmediately placed in tooth extraction sockets in 21 patients (7 females and 14 males) respectively, Autogenous grafting material of maxillary tuberosity harve sted by Mx grafter was used as a gap filling or defect restoring material arou nd screw type root form implant. Defect height and width were measured at the ti me of implant placement and at second stage surgery. Results: 3～4 months postoperatively, all implants demonstrated clinical stabilit y and the gap or defects were replaced with newly formed bone at second stage s urgery.All the implants were in function. Conclusions: Th e technique described affords a simplified and predictable manner for placement of implants into immediate tooth extraction sockets.

Osteoarthritis is a chronic disabling disease that tends to occur in middle-aged and elderly population, the main pathological characteristics are the dynamic imbalance between the synthesis and degradation of articular chondrocytes, extracellular matrix and subchondral bone. The occurrence and development is related to many factors. This article reviews the structure, the function and the interaction between α2-macroglobulins and a disintegrin and metallo-proteinase with throm-bospondin motifs in the development of osteoarthritis.

BACKGROUND: Lumbar spondylolysis is the common cause of teenagers' low back pain. It should apply internal fixation if conservative treatment is invalid. There are a variety of surgeries, which aims to alleviate pain and bony fusion of pars defect.OBJECTIVE: To observe clinical outcome of bone graft of pars defect plus temporary single segmental pedicle screw rod fixation for adolescent lumbar spondylolysis.METHODS: A total of 32 adolescent patients of lumbar spondylolysis were treated by bone graft of pars defect plus temporary single segmental pedicle screw rod fixation. All the patients had bilateral spondylolysis. 20 patients had no lumbar spondylolisthesis, while the others had I° spondylolisthesis. All the patients received lumbar radiograph, CT and MRI. Visual analogue scale and Oswestry disability index were utilized to evaluate pain improvement before and after operation. MacNab was used to assess efficacy. Bone graft healing at isthmus was observed with lumbar CT after fixation. The internal fixation was removed after bone fusion, then the motion of the fixed segment and the degeneration of adjacent intervertebral disc occurred were recorded.RESULTS AND CONCLUSION: (1) Completed bone fusion of pars defect was achieved in all the patients. The average period of bone union was 7.4 months. (2) The visual analogue scale and Oswestry disability index scores were significantly improved after surgery in all patients (P < 0.05). (3) The fixed segment reserved the motion after internal fixation removal. The signal of adjacent intervertebral disc of fixed segment had no changes compared to preoperative MRI. (4) Bone graft to repair isthmus defect plus temporary single segmental screw rod fixation for adolescent lumbar spondylolysis is very effective, the bone fusion is completed, and temporary fixation may effectively alleviate the degeneration of adjacent disc.

Objective To study the clinical characteristics, diagnosis, treatment and prognosis of primary pulmonary peripheral T-cell lymphoma, not otherwise specified (PTCL-NOS). Methods Two cases of primary pulmonary PTCL-NOS were studied and relevant literature were reviewed. Results Case 1 diagnosed as primary pulmonary PTCL-NOS was a 44 years old woman and disease progressed after GLD (Gem+L-OHP+ DXM) chemotherapy regimen. At last, the patient died of respiratory failure after one month. Case 2 diagnosed as primary pulmonary PTCL-NOS was a 46 years old man and reach partial response after CHOP regimen, and still alive now.Conclusion Primary pulmonary PTCL-NOS is very rare. It is easy to be misdiagnosed due to non-specific clinical and imaging manifestations. Acquiring enough tissue specimens for pathologic examination is the key to a definitive diagnosis. At present, there is no standard chemotherapy regimen for these patients, the prognosis is relatively poor.

Hypoxic-ischemic brain damage is a serious complication of perinatal asphyxia. Enriched environment is the living condi-tions for the promotion of feeling, cognition and behavior. Enriched environment may promote the repairing of hypoxic-ischemic brain dam-age in term of praxiology, morphology and molecular biology, that enriched environment may regulate the secretion and release of various factors, and enhance synaptic plasticity, induce neuron regeneration, inhibit its apoptosis, and result in ethological and morphological recov-ery.

Objective:To retrospectively investigate the efficiency of Jinlong capsule combined with transarterial chemoemboli-zation for the treatment of advanced pancreatic carcinoma. Methods: Sixty advanced pancreatic carcinoma patients between January 2009 and May 2013 were randomly assigned into the experimental group (n=30, Jinlong capsule combined with transarterial chemoem-bolization) and the control group (n=30, transarterial chemoembolization). Both groups were subjected to superselective pancreas artery chemotherapy with GEMZAR at a dose of 1.0 g/m2. Results:The overall response rate (CR+PR) was 53.3%and the control rate was 70%(CR+PR+SD) (CR 0, PR 16, SD 5) in the experimental group, whereas those in the control group were 36.7%and 56.7%(CR 0, PR 11, SD 6), respectively. The short-term therapeutic efficacy was higher in the experimental group than in the control group (P<0.05). No significant difference in adverse reactions, including digestive reactions and myelosuppression, almost I-II degree, was observed be-tween the two groups (P>0.05). No significant difference in the Karnofsky performance status was observed between the two groups af-ter the treatment (P<0.05). The 24-month survival rate of the experimental group was 50.0%, whereas that of the control group was 33.3%(P<0.05). Conclusion:The application of Jinlong capsule combined with transarterial chemoembolization for the treatment of advanced pancreatic carcinoma showed good clinical effects. The patients also showed good tolerance to this treatment.

Objective To study the effect of cluster needling of scalp acupuncture combined with rehabilitation on neurological function and expression of basic fibroblast growth factor (bFGF) and angiostatin (AS) in rats after focal cerebral ischemia. Methods 90 male Sprague-Dawley rats were randomly divided into sham operation group, model group, acupuncture treatment group, rehabilitation treatment group and acupuncture and rehabilitation treatment group, each group was further divided into 3 days, 7 days and 14 days subgroups (n=6). Permanent cerebral ischemia rat model was established according to Longa's method. The model group and the sham operation group accepted no treatment, the acupuncture treatment group was treated by cluster needling of scalp acupuncture, the rehabilitation treatment group received the treadmill training, the acupuncture and rehabilitation treatment group was treated by acupuncture and rehabilitation therapy. 3 days, 7 days, 14 days after operation, the neural function was evaluated with the modified Neurological Severity Score (mNSS), the expression levels of bFGF and AS proteins were detected by Western blotting. Results Compared with the model group, the acupuncture treatment group and the rehabilitation treatment group, mNSS decreased, the expression of bFGF protein increased, and the expression of AS protein decreased in the acupuncture and rehabilitation treatment group 3 days, 7 days, 14 days after operation (P<0.05). Conclusion Acupuncture and rehabilitation therapy can reduce the neurological function defect in rats with focal cerebral ischemia, which may be related to the upregulation of bFGF protein expression and down-regulation of AS protein expression.

Wistar rats(n=24) were divided into normal control group(NC), food restriction group(FR), and catch-up group(RN). Serum glucose,lipids, gastrin, the ratio of visceral fat to body fat, adipocyte CCK2R mRNA and protein levels were determined. Compared with NC group, FR rats had lower serum gastrin and visceral fat formation. The adipocyte CCK2R mRNA and protein levels of FR rats were lower than those of NC rats. Serum gastrin level of RN rats was higher than those of FR and NC rats(P＜0.05). The ratio of visceral fat to body fat in RN rats increased compared with FR rats and was close to that of NC rats. The adipocyte CCK2R mRNA and protein levels of RN rats were higher than those of FR and NC rats. Gastrin and its receptor pathway possibly play a role in the mechanism of visceral fat accumulation in catch-up rats.

Cultured primary human umbilical vein endothelial cells (HUVECs) were divided into 4 groups:normal control( NG ),persistent high glucose ( HG ),hyperglycemia group ( TG ),and mannitol control ( MA )groups.After 1,4,and 7 days of culture,cells were collected.Cell proliferation,cell apoptosis,ROS,SOD,MDA,and NO level,eNOS mRNA and protein level were measured.Endothelial cell proliferation was inhibited in HG,TG,and MA groups compared with NG group.Hyperglycemia memory induced apoptosis of endothelial cells,increased ROS and MDA generation,and down-regulated intracellular SOD level,findings similar to those in HG group.After 24 h of culturing,eNOS expression and NO generation in both HG and TG groups were higher than those in NG group.However,after 7 days of culturing,eNOS expression and NO generation in both HG and TG groups were lower than those in NG group.These results suggest that in hyperglycemia memory cell model,transient hyperglysemia may lead to persistent imbalance in oxidative stress and reduce endothelium-derived relaxing factor NO level,indicating that hyperglycemia memory may play an important role in persistent vascular endothelial cell injury.

Objective To investigate the expression and clinical significance of Ku70 in nasopha ryngeal oarcinoma(NPC).Methods The expression of Ku70 protein in 223 specimens of nasopharyngeal carcinoma was examined by immunohistochemistry.Based on the levels of ku70 immunoreactivities,the 223 specimens were divided into high Ku70 expression group and low Ku70 expression group.The correlation of Ku70 expression with clinicopathologic features and prognosis of NPC was analyzed according to the clinical data. Results The rate of high Ku70 expression was 63.7%.Univariate survival analysis suggested that the overall survival rate was significantly lower in high KuTO expression group than in low Ku70 expression group (X2 = 7.88,P = 0.005).Cox multivariate analysis indicated that T stage,N stage and M stage were the independent prognostic predictors (X2 = 8.02,7.22,36.86;P =0.005,0.007,0.000),but not with gender, age or pathological type(X2 = 0.08 ,1.04,2.34;P = 0.780,0.308,0.126),the influence of Ku70 on the o verall survival rate was close to critical value(P = 0.085).Conclusions Ku70 is positively expressed in the majority of NPC.KuT0 expression has significant correlations with T stage and N stage.The results of our study suggest that Ku70 is a valuable prognostic factor of NPC.