Objective:To study the antimicrobial susceptibility of periodontopathic bacteria associated with failing implants to commonly used antibiotics in periodontal therapy and dental practice.Methods:Antimicrobial susceptibility of bateria isolates was determined by the method of microbroth dilution and the activities of 8 kinds of antibiotics against international laboratory strains and clinical isolates of Provotella intermedia (Pro.I), Porphyromonas gingivalis (Pg), Actinobacillus actinomycetemcomitans (Aa), Fusobacterium nucleatum (Fn) were examined.Results:Ofloxacin, clindamycin, tinidazole and metronidazole showed stronger antibacterial activity aginst Pro.I,Pg,Aa and Fn with MIC_ 90 ≤0.5 ?g/ml and MBC_ 90 ≤0.5 ?g/ml.Conclusion:Commonly-used antibiotics are potential against bacteria isolated around failing implants.

[Objective]To investigate the effects of YIGUTANG contaning serum on osteoblasts proliferation which was from the skull of newborn SD rat in vitro.[Methods] The osteoblast from newborn SD rats’skull adopted, take the method of collagenase-pancreatic enzyme digestion,then respectively culture these osteoblasts with different concentration of the YIGUTANG drug containing serum fluid together.[Results]YIGUTANG drug containing serum could stimulate the proliferation of osteoblast, and the high,the middle and the low concentrations groups contrasted with the control group, all could promote the proliferation of cell .The drug containing serum groups had insignificant difference from the blank control group(P

An artificial neural network method for quality estimation of traditional Chinese medicine was suggested, and quality of Hou-Po was estimated by the proposed method in comparison with the analytical results of gas-liquid chromatography. The successful rate reached 100%. The results showed that the neural network method is reliable, and therefore may be referred to as an effective technique for the quality estimation of traditional Chinese medicine.

ObjectiveTo investigate the selective mechanism of dehydroepiandrosterone (DHEA)for osteoblast via ERβ. Methods High expression of ERβ in hMG63-ERβ group ( infected with pWPTERβ), gene silencing of ERβ in hMG63-shERβ group (infected with pLVTHM-GFP/ERβ-shRNA) and hMG,63 group (control) were cultured and treated with 1 × 10-7 mol/L DHEA, with or without U0126 and etoposide. The proliferation and apoptosis of hMG63 were evaluated by flow cytometry. The mRNA level of estrogen receptor subtype was detected by reverse transcription-PCR. ResultsThe expression of ERβ in hMG63-ERβ group and hMG63-shERβ group were increased 7. 39 times and decreased 17％ compared with that in hMG63 group (control). DHEA could increase ERβ expression in hMG63 in each group, however, it did not influence the expression of ERα mRNA. When the level of ERβ was high, DHEA could accelerate the proliferation [proliferation index were ( 81.6 ± 7.6) ％ in hMG,63-ERβ, ( 75.0 ± 5.3 ) ％ in hMG63, P ＜ 0. 05]and inhibit the apoptosis [apoptosis rate were ( 12.2 ± 1.6) ％ in hMG63-ERβ, ( 14. 6 ± 1.5 ) ％in hMG63, P ＜0. 0 1], which was blocked by U0126 [proliferation index were (33. 2 ± 2. 0)％ in hMG63-ERβ, (41.2 ± 2. 4) ％ in hMG63, apoptosis rate were (40. 5 ± 4. 3 ) ％ in hMG63-ERβ, (43.3 ± 4. 1 ) ％in hMG63, all P ＜0. 05]. When the expression of ERβ was silenced, DHEA could not inhibit the apoptosis of hMG63 anymore. ConclusionDHEA selectively act on osteoblasts via the dominant expression of ERβ.

Objective To evaluate the techniques and efficacy of artery embolization in the treatment of benign prostatic hyperplasia(BHP).Methods This study included 12 patients(age range,61-82 years) who were diagnosed to have BHP by clinical manifestations,CT and B-ultrasound,with the disease course of 2-16 years.The relevant parameters were as follows:mean residual urine(RU) of 138 ml,Qmax of 9.6 ml/s,mean IPSS of 24.2 and QOL of 4.8.In these patients,the prostate blood-supply arteries were confirmed by super-selective arteriography,and were embolized by injection of PVA and Gelfoam via artery catheters.The pre-and post-operative IPSS,QOL,Qmax and RU were compared.Meanwhile the changes of prostate volume and blood supply were evaluated by CT and B-ultrasound.In addition,the change of urethral diameter was evaluated by urethrography.Results In the 12 patients,21 prostate blood-supply arteries were embolized,including 5 branches of internal iliac artery,9 branches of inferior vesical artery,5 branches of internal pudendal artery,2 branches of obturator artery.The arteries were embolized bilaterally in 9 patients and embolized unilaterally in 3 patients.Postoperatively,the mean IPSS was 4.8;QOL,1.3;Qmax,18.9 ml/s;RU,0-3 ml,which indicated that the urethral obstruction was obviously improved after operation.CT and B-ultrasound showed that the prostate volume was obviously decreased from 127 ml to 90 ml on average with a reduction rate of 71%,and the urethral stricture disappeared on X-ray examination.Color Doppler imaging showed that the blood supply inside the prostate was reduced.Conclusions The artery embolization for the treatment of BHP is a new method with several virtues of less trauma, marked effect,better safety and fewer complications.

Objective To discuss the efficacy of the flexible ureteroscopy combined with Holmium laser lithotripsy for kidney calculi with HIV positive patients.Methods From May 2015 to May 2016,47 cases of patients with renal calculi were treated by the flexible ureteroscopy combined with Holmium laser lithotripsy in our hospital.There were 29 cases male,18 cases female,aged from 22 to 56 years old,average 39 years.There were 38 cases with single stone,9 cases with multiple stones.There were 9 cases with stones on both sides.Flexible ureteroscopy channel sheath was used in surgery.Stones were fragmented by Holmium laser.During one-month follow-up after surgery,stone removal and stone free rate were recorded.Residual stones were re-treated with a secondary lithotripsy or ESWL.Results The flexible ureteroscopy channel sheath was indwelled successfully in all the cases.All stones were detected.The average operation time was 63min (range,42-141min) and the median postoperative stay was 4.5days (range,2-16 d).Among the 47 patients,41 patients underwent first-stage lithotripsy,6 patients underwent second-stage ESWL after lithotripsy,and 1 patient underwent third-stage lithotripsy.The one-month stone free rate was 87.2％ (41/47).The total stone free rate was 97.9％ (46/47) after second-stage lithotripsy.Postoperative fever occurred in 4 cases after lithotripsy.No blood transfusion,systemic infection,ureteral perforation,or ureteral avulsion occurred.The total complication rate was 8.5％ (4/47).The mean number of CD4 +T lymphocytes before lithotripsy was 402/μl,and was 410/μl 3 days after lithotripsy.There was no Statistical differences between them.Conclusions Flexible ureteroscopy combined Holmium laserlithotripsy could be a safe and effective treatment for kidney calculi patients with HIV/AIDS positive.

Objective To explore the effects of atorvastatin on inflammatory factors(hs-CRP,TNF-αand IL-6 levels )of coronary heart disease. Methods 160 patients with coronary artery disease were selected which were treated in Nanyang Municipal Central Hospital from January 2010 to July 2014.The 160 CHD patients were divided into two groups using the random number table method.On the basis of conventional treatment,patients of the experimental group were given atorvastatin,but the patients of control group were given only the other conventional treatment.Patients of two groups were tested about inflammatory factors before treatment and after two months treatment,and then analyzed and compared.Results It had no statistically significant difference on hs-CRP,TNF-αand IL-6 levels in patients of the two groups before treatment;it had statistically significant difference on hs-CRP,TNF-αand IL-6 levels in patients of the two groups of two months after treatment(P<0.05 );differences on hs-CRP,TNF-αand IL-6 levels of patients between pre-treatment and after treatment of two months in the experimental group were statistically significant (P<0.05 );however,it was opposite in the control group.Conclusion Atorvastatin could significantly reduce the levels of inflammatory factors(hs-CRP、TNF-αand IL-6)of patients with coronary artery disease.It has important clinical value.

BACKGROUND:Cryotherapy plays a positive role in the treatment of delayed-onset muscle soreness caused by high intense exercise. OBJECTIVE: To investigate the effects of different crypotherapy programs on the levels of interleukin-6 and prostaglandin 2 in long distance race-walkers after 15-day training, and to determine a rational treatment program for delayed-onset muscle soreness. METHODS:Sixteen male race-walkers in Liaoning Province were randomly divided into cryotherapy and cryo/heat therapy groups, and received 10-minute cryotherapy and 2.5-minute cryo/heat therapy (2.5-mintue cryotherapy and 2.5-minute heat therapy alternately for 10 minutes), respectively, after 15-day training. The serum levels of interleukin-6 and prostaglandin 2 were detected at six different time points to compare the efficacy between two methods. RESULTS AND CONCLUSION: Compared with the cryo/heat therapy group, the serum levels of interleukin-6 and prostaglandin 2 in the cryotherapy group were significantly decreased. That is to say, cryotherapy is more available for alleviating delayed-onset muscle soreness after intensive eccentric training or in intensive seasons.

Objective To study the value of hCG ratio of blood in peritoneal cavity versus venous blood (RPhCG/VhcG) in diagnosis of early ectopic pregnancy (EP).Methods From Mar.2009 to Oct.2012,268 cases with EP (EP group) and 53 women with intrauterine pregnancy with haemoperitoneum (hIUP) (hIUP group) from International Peace Maternity and Child Health Hospital of Shanghai Jiaotong University School of Medicine,Shanghai 6th People Hospital and Shanghai Jiangwan Hospital were enrolled in this prospective study.The HCG of all subjective were measured in blood in peritonea cavity and venous blood,then calculate the ratio of RPhCG/VhCG.Scatter point analysis and ROC were used to differentiate EP,determine threshold of hlUP and evaluate the sensitivity,specificity and accuracy in diagnosis EP preoperatively.Results The mean RPhCG/VhCG; of EP group was 4.35,which was significantly higher than 0.81 in hIUP group (P ＜ 0.01).Scatter point analysis showed that the threshold value of RPhCG/VhCG between ectopic pregnancy and hIUP was 1.0.The overall sensitivity of RPhCG/VhcG in the diagnosis of EP was 98％,the specificity was 100％,the positive predictive value was 100％ and the negtive predictive value was 93％.Conclusion RPhCG/VhCG ＞ 1.0 could be used to diagnose and differentiate EP from hIUP accurately.

Objective: To investigate the status of insomnia, Internet addiction, and depressive symptoms among medical students and to analyze the effect of Internet addiction on insomnia and the mediating role of depressive symptoms, in order to provide a basis for the development of targeted interventions and measurements for medical students. Methods: A stratified whole group sampling method was used to select full-time college students from three medical universities in Anhui Province. The Chinese version of Insomnia Severity Index (ISI), Internet Addiction Test (IAT) scale and 9-item Patient Health Questionnaire (PHQ-9) were used to evaluate the symptoms of insomnia, Internet addiction and depressive in students. A multivariate Logistic regression analysis was used to explore the factors influencing insomnia among medical students and to analyze the relationship between insomnia with Internet addiction and depressive symptoms, respectively. Results: The overall rate of Internet addiction was 49.5%, depressive symptoms was 39.5%, insomnia was 18.6%. High academic stress, and the presence of surrounding people diagnosed with COVID-19 were associated with a higher risk of insomnia ( P <0.05). The higher the level of Internet addiction (mild, OR =2.60; moderate/severe, OR =4.21) and depression. (mild, OR =6.35; moderate/severe, OR =19.32), the higher the risk of insomnia. Mediated effect analysis showed that Internet addiction had a direct predictive effect ( β =0.02, P <0.05) on insomnia and also indirectly affected insomnia through depression (indirect effect=0.07，95% CI =0.06-0.08). Conclusion The detected rates of insomnia, Internet addiction and depressive symptoms are high among medical students in Anhui Province, and Internet addiction and depressive symptoms are risk factors for insomnia, which should be given more attention and appropriate interventions when necessary to improve their physical and mental health.