BACKGROUND:Studies have shown that bone morphogenetic proteins play a key role in skeletal development. Platelet-rich plasma alone in animal or clinical trials cannot significantly promote bone graft healing.
OBJECTIVE:To investigate the osteogenesis effect of bone morphogenetic protein-4 compounded with platelet-rich plasma the bone defect area.
METHODTwenty-four New Zealand white rabbits were selected to establish maxil ary bone defect models, and then were randomly divided into four groups, six rats in each group. Group A was blank control group;Group B wasβ-tricalcium phosphate (0.1 g)+Bio-gide group;group C wasβ-tricalcium phosphate (0.1 g)+Bio-gide+platelet-rich plasma (1 mL) group;and group D wasβ-tricalcium phosphate (0.1 g)+Bio-gide+platelet-rich plasma (1 mL)+bone morphogenetic protein-4 (5μg). Gross observation, histological observation and imaging analysis were performed for analysis of new bone formation at weeks 4, 8, 12 after modeling.
RESULTS AND CONCLUSION:After 4 weeks, group D had more new bone and vessels formed in the bone defect area than the group B (P<0.01);however, the amount of new bone was higher in the group B than the group A (P<0.01). After 4, 8, 12 weeks, the amount of new bone in the bone defect area was higher in the group D than the groups B and C (P<0.01), and lowest in the group A (P<0.01). In theβ-tricalcium phosphate scaffold, platelet-rich plasma combined with bone morphogenetic protein can significantly promote the healing of bone defects.

Objective To observe the effect of magnetic attachments application on oral denture restoration .Methods A to-tal of 50 patients with overdenture restoration treatment in this department from April 2012 to April 2014 were enrolled .Abutment tooth were given magnetic attachments restoration after preparations .The masticatory efficiency ,patient satisfaction and post-resto-ration complication were observed and recorded .Results The immediate masticatory efficiency after magnetic attachments restora-tion (0 .65 ± 0 .09) was significant higher than that before restoration(0 .22 ± 0 .04) ,t= 20 .812 ,P< 0 .05 .After one-year′s magnetic attachments restoration ,masticatory efficiency(0 .71 ± 0 .13) was higher than that before restoration(t = 25 .060 ,P< 0 .05) .There was no statistic difference in magnetic attachments restoration between immediate masticatory efficiency and one-year masticatory efficiency(t= 0 .018 ,P> 0 .05) .There were 49 cases of immediate satisfaction and 1 case of satisfactory after restoration ,the patient satisfaction rate was 100% ,it was significant higher than that of before restoration(46% ) ,χ2 = 31 .815 ,P< 0 .05 .There were 45 ca-ses of satisfaction and 5 case of satisfactory after restoration ,the patient satisfaction rate was 100% ,it was significant higher than that of before restoration (χ2 = 31 .815 ,P< 0 .05) .Conclusion The masticatory efficiency could be improved significantly by mag-netic attachments to restore denture depletion or dentition defect ,compare with traditional denture ,it can significant shorten adapt time for patients ,and it can enhance patient satisfaction .It has wide prospect for future clinical application .

Objective To observe the effect of pentoxifylline(PTX),albendazole(ABZ),and a combination of PTX and ABZ in mice infected with Echinococcus multilocularis(E.M).Methods The first part of the experiment was to observe the in vitro effect of PTX on the cultured E.M protoscolex.In the second part,mice were infected by abdominal inoculation of E.M and divided into groups given by ABZ 50 mg/kg?d,PTX 360 mg/kg?d,PTX 180mg/kg?d,and a combined regimen ABZ 50 mg/(kg?d)+PTX 180 mg/(kg?d).Another infected group and a uninfected group served as controls which received normal saline only.100 days post-treatment,the mice were sacrificed for further observation.Indicators included wet weight of the cyst,cyst inhibition rate,level of serum cytokines TGF-? determined by ELISA,IL-2 and IL-10 determined by radio-immunoassay(RIA).Results The inhibition rate on cysts of the combined ABZ and PTX was 88%,considerably higher than 58 % of the group ABZ.The serum TGF-? and IL-10 decreased and IL-2 increased after treatment in comparison to the controls.Conclusion The PTX and ABZ combination shows better effect on E.multilocularis infection than that of single ABZ.PTX might help increase immunity of the mice.

Objective To explore the value of virtual touch tissue quantification(VTQ) in diagnosis of mucoepidermoid carcinoma (MECa) of parotid gland.Methods The sonographic and VTQ findings of 36 patients with MECa of parotid gland proved by pathology were analyzed retrospectively.The patients were divided into 3 groups according to pathology.50 normal subjects were choesn as control group.Results There were significant differences of shear wave velocity (SWV) between MECa groups and control group as well as among MECa groups (all P ＜0.01).Conclusions VTQ provides quantitative information about tissue stiffness which is useful for the diagnosis of MECa of parotid gland.

OBJECTIVETo evaluate whether intraoperative autologous donation (IAD) can reduce perioperative blood transfusion for patients underwent mitral valve replacement (MVR).

METHODSA total of 318 patients received implementation of IAD from January 2011 to December 2013 were analyzed retrospectively, and compared with 517 patients of the previous 36-month period (from January 2008 to December 2012). The method of small-volume retrograde autologous priming, strict blood transfusion standard along with IAD together constituted a progressive blood-saving strategy. Statistical methods including Students' t-test, Pearson's χ(2) test, Kruskal-Wallis analysis and multivariate Logistic regression model were used for comparisons of the data.

RESULTSThere were no significant difference between IAD group and non-IAD group considering preoperative patient demographics, characteristics and preoperative comorbidities. However, IAD group significantly reduced number of patients transfused with intra/post-operative packed red-blood cell (PRBC) (55(17.0%) vs. 215 (42.1%), χ(2)=53.0, P=0.000), and had significantly reduced postoperative chest tube output (150(380) ml vs. 700(660) ml, H=195.648, P=0.000), length of stay ((16±6) d vs. (20±8)d, t=9.60, P=0.000). But hematocrit were lower in IAD group (30%±5% vs.33%±4% at end of operation, t=7.76, P=0.000; 30%±4% vs. 32%±5% at discharge, P=0.000, t=3.86). Multivariate logistic aggression analysis revealed that age, IAD and smoking history were factors influencing the probability of intra or postoperative blood transfusion.

CONCLUSIONImplementation of blood conservation strategies based on intraoperative autologous donation in mitral valve replacement surgery can significantly reduce intra/postoperative blood transfusion as well as postoperative complications.

Blood Transfusion, Autologous ; Bloodless Medical and Surgical Procedures ; Cardiac Surgical Procedures ; methods ; Hematocrit ; Humans ; Logistic Models ; Mitral Valve ; surgery ; Postoperative Complications ; Retrospective Studies

Objective To investigate the distribution and resistance profile of bacterial isolates in Shanghai Children's Hospital. Methods Antimicrobial susceptibility of all isolates was determined by Kirby-Bauer disk diffusion method according to 2016 CLSI standard. The data were analyzed by WHONET 5.6 software. Results A total of 23 259 non-duplicate strains were isolated from 2011 to 2016, including 10 885(46.8％)gram-postive cocci and 12 374(53.2％)gram-negative bacilli. The average prevalence of methicillin-resistant S. aureus(MRSA)and coagulase-negative Staphylococcus(MRCNS)was 35.8％ and 82.2％, respectively. The prevalence of MRSA rose from 27.4％ in 2011 to 42.9％ in 2016. The resistance rate of MRSA and MRCNS strains were significantly higher than methicillin sensitive strains. The resistance rate of Enterococcus faecium strains was significant higher than Enterococcus faecalis. The prevalence of non-susceptible Streptococcus pneumoniae was 31.2％(908). No gram-positive strain was resistant to vancomycin or linezolid. The prevalence of carbapenem resistance increased in gram-negative strains. The resistance rate of Klebsiella pneumoniae to imipenem and meropenem rose from 3.1％ and 4.8 ％ in 2011 to 28.7％ and 37.4％ in 2016, respectively.The rate of Pseudomonas aeruginosa resistance to imipenem and meropenem rose from 13.8％ and 16.5％ in 2011 to 18.8％ and 19.4％ in 2016, respectively, while Acinetobacter baumannii showed resistance rate of 38.3％ and 39.9 ％ in 2011 to 68.4％ and 69.7％ in 2016. Conclusions Increasing prevalence of MRSA, carbapenem-resistant K. pneumoniae, extensively drug-resistant A.baumannii has become a concern in clinical practice. Therefore, antimicrobial resistance surveillance should be highly strengthened in children's hospital.

Objective To observe the effects of Jianpi Liqi Huashi Prescription on hepatocyte injury,oxidative stress and nitrative stress in mice with non-alcoholic steatohepatitis(NASH);To explore its mechanism in the treatment of NASH.Methods Totally 32 male C57BL/6J mice were randomly divided into control group,model group and TCM low-and high-dosage groups,with 8 mice in each group.The control group was fed with ordinary diet,and the other groups were fed with high-fat diet,for consecutive 16 weeks.Starting from the 13th week,the control group and model group were given 0.4%CMC-Na solution by intragastric administration and the TCM groups were given corresponding doses of drugs by intragastric administration,respectively.Biochemical instrument was used to detect serum alanine aminotransferase(ALT)and aspartate aminotransferase(AST)contents,HE staining and oil red O staining were used to detect liver histopathology,triglyceride(TG)content and myeloperoxidase(MPO)activity in liver tissue were detected through test kit.immunofluorescence staining was used to detect positive expression of CD11b in liver tissue,the mRNA expressions of NOX1 and NCF1 were detected by RT-PCR,and the protein expressions of inducible nitric oxide synthase(iNOS)and 3-nitrotyrosine(3-NT)in liver tissue were detected by Western blot.Results Compared with the control group,the hepatocytes in the model group showed diffuse steatosis,hepatocyte swelling and inflammatory cell infiltration;a large number of fat droplets were formed by oil red O staining;serum ALT and AST contents significantly increased(P<0.05),the TG content and MPO activity in liver tissue significantly increased(P<0.05);the positive expression of CD11b in liver tissue increased;the mRNA expressions of NOX1 and NCF1 in liver tissue significantly increased(P<0.05);the expressions of iNOS and 3-NT protein in liver tissue significantly increased(P<0.05).Compared with the model group,the degree of liver steatosis,the level of inflammatory cell infiltration and the number of lipid droplets in TCM groups decreased significantly;serum ALT and AST contents significantly decreased(P<0.05);the TG contents and MPO activity in liver tissue significantly decreased(P<0.05);the positive expression of CD11b in liver tissue decreased;the mRNA expressions of NOX1 and NCF1 in liver tissue significantly decreased(P<0.05);the expression of 3-NT protein in liver tissue significantly decreased(P<0.05);the expression of iNOS protein in liver tissue of mice in TCM high-dosage group significantly decreased(P<0.05).Conclusion Jianpi Liqi Huashi Prescription may relieve liver cell damage,lipid deposition and inflammation in NASH mice by alleviating oxidative stress and nitrative stress in the liver,and play a role in the treatment of NASH.

OBJECTIVETo investigate the significance of monitoring procalcitonin (PCT) when applying antibiotics to trichlorethylene (TCE)-induced dermatitis.

METHODSOne hundred and two patients who were hospitalized and recovered from TCE-induced dermatitis in our hospital from 2006 to 2013 were enrolled as subjects. Based on whether the PCT level was monitored or not, we divided patients into regular group and PCT group. For the regular group, we applied antibiotic treatment and determined the course of treatment based on clinical symptoms, laboratory test results, medical imaging results, and bacterial culture. For the PCT group, in addition to the above treatments, antibiotic treatment was applied when the PCT level was not lower than 0.25 ng/ml and stopped when the PCT level was lower than 0.25 ng/ml. The distribution of bacterial infection sites, type of bacteria, type of antibiotics, average period of hospitalization, and course of antibiotic treatment were compared between the two groups.

RESULTSThere were no significant differences in the distribution of bacterial infection sites, type of bacteria, type of antibiotics, and average period of hospitalization between the two groups (P > 0.05). The course of antibiotic treatment for the PCT group was significantly shorter than that for the regular group (25.37 ± 11.66 vs 20.58 ± 7.53 d, P < 0.05).

CONCLUSIONUnder similar conditions of bacterial infection, antibiotic treatment of TCE-induced dermatitis based on the serum PCT level can significantly shorten the course of treatment and avoid the abuse of antibiotics.

Anti-Bacterial Agents ; therapeutic use ; Bacteria ; Bacterial Infections ; Calcitonin ; analysis ; Calcitonin Gene-Related Peptide ; Drug Eruptions ; drug therapy ; Hospitalization ; Humans ; Monitoring, Physiologic ; Protein Precursors ; analysis ; Trichloroethylene ; toxicity