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Objective To evaluate the effectiveness of mild hypothermia and the intra-aortic balloon pump (IABP) in postcardiac surgical patients with severe heart failure. Methods Twelve patients took combination therapy of IABP and mild hypothermia after cardiac surgery, which did not improve the low cardiac output with massive doses of catecholamine, were included in this study. The values of cardiac index (CI), mixed venous oxygen saturation (SvO2), urine volume and creati-nine (Cr) were measured before and after treatment. Results After combination therapy of IABP and mild hypothermia, the value of CI was improved obviously [L/(min·m2):2.4±0.5 vs 1.6±0.2], the value of SvO2 increased (0.65±0.07 vs 0.52±0.05 ), urine output increased obviously [mL/(kg·h):2.9±1.9 vs 1.2±0.9 ] and the value of Cr decreased obviously (mmol/L:95±10 vs 282±25 ). Conclusion The combination therapy of mild hypothermia and IABP is an effective and simple procedure for the postcardiac surgical patients with severe heart failure.

Objective To explore and analyze the risk factors affecting psychological status of adolescent orthodontic patients in stomatology department, and to develop intervention strategies according to the results. Methods A total of 186 cases of adolescent orthodontic patients in stomatology department from September 2012 to September 2015 were selected, and psychological status was investigated by Chinese Middle School Students Mental Health Scale (MMHI-60 scale) and Symptom Self-rating Scale (SCL-90).The patients were divided into observation group (with psychological problems) and control group (without psychological problems) according to the psychological status scale scores. Univariate descriptive analysis and multivariate Logistic regression analysis were used to determine related factors of the possible influencing factors, and the intervention strategies were developed. Results The factors such as social roles, living area, single parent, only child, internal and external tropism, neuroticism, being given health education, malocclusion severities of the deformities were closely related to psychological status of adolescent orthodontic patients in stomatology department (χ2=2.534-44.297, P<0.05 or 0.01). The independent risk factors were classified as high to low according to the degrees of danger: severe malocclusion (OR=3.578, P=0.000), instability emotional (OR=2.934,P=0.000), workers (OR=1.857, P=0.011) and rural life (OR=1.632, P=0.014), while the factors such as outgoing personality (OR=0.628, P=0.008) and being given health education (OR=0.746, P=0.010) were protective factors. Conclusions The factors such as severe malocclusion, instability emotional, workers,rural life,outgoing personality and health education are the related risk factors affecting psychological status of adolescent orthodontic patients in stomatology department, and psychological health intervention should be strengthened in the clinical practice to improve the psychological status and compliance.

BACKGROUND: Heal-all oral biofilm is a material utilized in repairing oral mucosa and soft tissues defects and characterized by degradation, easily preparation, long preserved duration, convenient transportation and good ossification, which has been widely used in dental implant as guided bone regeneration materials.OBJECTIVE: To check the clinical effective of Heal-all oral biofllm on guided bone regeneration in dental implant.METHODS: A total of 72 patients with bone defects in the implantation area were selected as subjects, who were divided into control group and experimental group at random. Bone defects around implants were repaired by guided bone regeneration technique with BME-10X medical collagen membrane and Heal-all oral biofilm respectively. X-ray and clinical examination were taken at 1 and 3 months after implantation. The amount of new.formed bone tissue was evaluated when stage Ⅱ operation was performed.RESULTS AND CONCLUSION: In stage Ⅱ operation, osseointegration was formed between implants and bone tissue in all 72 patients. The average rate of bone formation was 92% in the experimental group while 91% in the control group. All implants were successfully repaired with implant denture. Occlusal function was restored successfully with all 72 implants during the follow-up period of 3-24 months after restoration. As an alternative option of BME-10X medical collagen membrane, Heal-all oral biofilm can be used in guided bone formation clinically.

Objective To compare the clinical results of two different anterior cervical surgical treatment for multi-segmental cervical spondylotic myelopathy (≥3 segments).Methods Twenty-three patients with segmental cervical spondylotic myelopathy,10 cases were treated with anterior cervical discectomy and fusion (ACDF) as ACDF group,13 cases were treated with anterior cervical corpectomy and fusion (ACCF) as ACCF group.The operation time,operative blood loss,JOA scores,neurological improvement rate and the variable of the D value were compared.Results The operation time and operative blood loss in ACDF group was significantly lower than that in ACCF group [(130.0 ±31.5) min vs.(150.0 ±42.5) min,(150.0 ± 120.8) ml vs.(310.0 ± 320.8) ml,P ＜ 0.05].The variable of the D value in ACDF group was significantly higher than that in ACCF group [(3.1 ± 1.4) mm vs.(2.3 ± 0.9) mm,P ＜ 0.05].There was no statistically significant difference in JOA scores,neurological improvement rate between ACDF group and ACCF group.Two cases of cerebrospinal fluid leakage in ACDF group,the oppression and drainage recovery after treatment.One case of 14 d after fistula complications in ACCF group,after patching were cured; 2 cases of titanium mesh shift,follow the fusion.Conclusions Both methods attain good clinical results.ACDF combined with ACCF treatment of multi-segmental cervical spondylotic myelopathy,with shorter operation time,relatively less blood loss,and better restoration of cervical sagittal alignment.

Purpose To investigate the diagnosis and differentail diagnosis of metastatic small cell carcinoma of bone in needle biopsy, especially for the differentail diagnosis with Ewing sarcoma of bone. Methods Clinicopathological informations of 11 cases of metastat-ic small cell carcinoma and 20 cases of Ewing sarcoma were collected, and markers for differentail diagnosis were detected in two groups by immunohistochemistry of EnVision. Results The positive rates of CD99 and FLI-1 were 27. 3% and 54. 5% in metastatic small cell carcinoma group, while the positive rate of CK was 15. 0% in Ewing sarcoma group. Patient′s age, single lesion, expression of CK, vimentin, CD99, FLI-1, CD56 were significantly different in two groups. Conclusions Metastatic small cell carcinoma and E-wing sarcoma share similar histopathologic features in needle biopsy, no single immunohistochemical marker can specifically distinguish small cell carcinoma from Ewing sarcouma. The correct diagnosis should comprehensive analyze clinicopathologic characters and a se-ries of immunohistochemical markers.

Zebrafish (Danio rerio), as a new vertebrate model organism, has been widely used in human disease research in recent years, especially in the study of human bone diseases.The zebrafish models show some advantages, such as expression of disease-related genes and application in pharmacodynamic screening and evaluation, etc.It is also of great practical significance for the traditional medicine, which has a characteristic efficacy in the treatment of bone diseases.This paper reviews the research and application of zebrafish in research on bone diseases such as osteoporosis, fracture, osteoarthritis, and so on, aiming to provide some inspiration for the future clinically relevant research.

Objective To investigate the effects of ulinastatin pretreatment on oxidative stress response and hepatocyte growth factor (HGF) after hepatectomy in rats.Methods One hundred and twelve pathogen-free male Sprague-Dawley rats,aged 3 months,weighing 230-280 g,were randomly divided into 2 groups (n=56 each): group hepatectomy (group H) and group ulinastatin pretreatment (group U).Left and median lobe resection was performed and then liver ischemia was induced by blood flow occlusion of right and caudate lobes for 30 min,followed by perfusion in both groups.Ulinastatin 50 000 U/kg was injected intravenously at 5 min before occlusion in group U.Eight rats in each group were chosen and the blood samples were taken from the inferior vena cava for measurement of serum ALT and AST activities and HGF concentration before ischemia and at 1,6,12,24and 48 h of reperfusion.Then the right lobe were removed for determination of apoptosis,SOD and myeloperoxidase (MPO) activities,MDA content,expression of proliferating cell nuclear antigen (PCNA) and liver regeneration.Apoptotic index was calculated.Another 8 rats in each group were chosen and the 7 day survival rate was recorded.Results Compared with group H,the levels of ALT,AST,MPO aud MDA and apoptotic index were significantly decreased,and the levels of HGF and SOD,PCNA expression and liver regeneration were significantly increased at different time points in group U (P ＜ 0.05).There was no significant difference in 7 day survival rate between group H and group U (P＞ 0.05).Conclusion Ulinastatin pretreatment can strengthen liver regeneration after hepatectomy in rats,the underlying mechanism may be related to inhibition of oxidative stress response and increase in HGF production.

Objective To develop a simplified bisulfite genomie sequencing(BGS)method for DNA methylation marker scanning.Methods According to modified BGS protocol,the desalt DNA treated with bisulfite were directly used for bisulfite-PCR(BSP)without alkali treatmenL Complement of the bisulfite modification Wag accomplished by a prolonged pre-denaturation stage.After BSP,a second round PCR was performed with a pair of GC tagged primers to adjust the GC content of the amplieon for direct sequencing.To assess this improved protocol,promotor methylation of TNF-α gene in 3T3-L1 cell and androgen receptor(AR)gene in Hela cell was investigated.The real time BSP for Alu was also used to compare the sensitivity of the modified assay with traditional assay.Results Both the hypermethylated TNF-α promotor and hypomethylated AR promotor were successfully sequenced by improved BGS method,and the results were consistent with that of the traditional assay.The conversion rate reached 100%,while the conversion specificity was higher than 93.75%.The sensitivity of improved BGS method inereaged significantly(t=2.978 2,P＜0.05)and showed good reproducibility.Condusion The improved BGS method is simple and sensitive,facilitating more ambitious genomic methyhtion mapping studies.