Objective:To analyze the prognosis of replanted permanent teeth in children and associated factors. To determine the onset time of root resorption and related factors. Methods: Clinical data of replanted teeth treated in Department of Pediatric Dentistry, Peking University, School and Hospital of Stomatology, from January 2000 to December 2006,were collected, and the follow-up period was no less than six months. The Fisher's exact test and cox regression were used for statistical analysis. Results: The study comprised of 39 patients with 50 replanted permanent teeth. The periodontium healing rate was 18%, while root resorption rate was 82%. Replacement resorption was the most common type of root resorption (64%).The factors significantly affecting periodontium healing were stage of root development and storage of avulsed teeth.Stage of root development and the time of endodontic treatment significantly affected the onset time of root resorption(P<0.05). Conclusion: Replacement resorption is the most common type of root resorption. The factors significantly affecting periodontium healing are stage of root development and storage of avulsed teeth. Stage of root development and the time of endodontic treatment significantly affect the onset time of root resorption.

Currently,antimicrobial resistance has become an urgent global public health problem.Human defensin,a family of innate immune peptides,plays an important role in the control of infectious disease because of its low resistance to microbiological infection.However,so far there is seldom report on industrial production of bioactive defensin.Human β-defensin 3 (HBD3) is a member of human innate antimicrobial peptides.It has broad-spectrum antimicrobial activity and function in a variety of inflammation diseases.In addition,HBD3 is considered as a good candidate for antibiotics,because it has a strong killing activity to antibiotics-resistant microbes and resistance to highsalt environment,it is especially valuable for the treatment of ocular surface inflammatory diseases.This review covers the in vitro research on the production of HBD3,optimization of structure-activity and its antimicrobial potential for ocular surface infection,which may provide a supportive evidence for the commercial production of HBD3 and other antimicrobial peptides in biopharmaceutical area.

Objective To discuss the clinical efficacy and complication of using polypropylene net in pelvic floor reconstruction to treat pelvic floor organ prolapsus. Method From October 2007 to May 2008,15 cases of organ prolapsus of many region defect in pelvic cavity were operated pelvic floor reconstruction, 14 cases had three regional defects,and 1 case had two regional defects. Results All the cases were punctured smoothly without hematoma and injury of blood vessel and organs. The time of operation for 15 cases ranged from 60 to 150 minutes,averaged (85.0±4.3) minutes. The amount of bleeding in operations ranged from 150 to 400 ml,averaged (200.0±0.1) ml. Fifteen cases recovered well after operation without infection.The days in hospital were 5-9 days,averaged (6.0±0.7) days. Following up 1-12 months,pelvic floor structure of all patients were normal,and interrelated symptom disappeared or improved. One case was discovered the net was eroded after 5 weeks. Conclusions Pelvic floor suspension by vagina is a micro operation to treat complicated pelvic floor organ prolapsus. It can accomplish pelvic floor reconstruction and reserve uterus simultaneously, healing efficacy is stable in short-term,but need further observation.

This study was aimed to explore effect of Gui-Zhi Fu-Ling W an (GZFLW) on HIF-1α and vascular en-dothelial growth factor (VEGF) in patients with endometriosis. A total of 68 endometriosis patients in the First Peo-ple's Hospital of Xining from June 2011 to June 2013 were included. All patients received treatment of GZFLW, once a day. After one-month treatment, the treatment efficacy was analyzed. The endometrial tissues (both ectopic endometrium and eutopic endometrium) were obtained before and after treatment. The protein levels of HIF-1α and VEGF as well as the relationship of HIF-1α and VEGF were analyzed by SP immunohistochemistry. The results showed that the total treatment efficacy was 86.76%. Compared with pretreatment, the posttreatment protein levels of HIF-1α and VEGF were significantly reduced (P< 0.05). The decreasing of VEGF protein level and HIF-1α expres-sion level were positively correlated (P< 0.05). It was concluded that GZFLW had better efficacy in the treatment of endometriosis. One of the reasons may be the downregulation of protein levels of HIF-1α and VEGF in endometriosis tissues.

Objective To study the clinical characteristics of children with chaotic atrial tachycardia (CAT),and to improve its clinical diagnosis and treatment.Methods Clinical data,follow-up,treatment and prognosis concerning 33 patients with CAT from Sep.2001 to Oct.2013 in Beijing Children's Hospital were analyzed.Results The 33 patients included 23 boys and 10 girls with ages ranging from 3 days to 13 months,5 months on the average.CAT was conformed by electrocardiogram in all patients:multifocal atrial tachycardia defined by 3 distinct P'-waveforms,irregular P'R,RR and P'-P' intervals,and isoelectric baseline between P'-waves.Combined with symptoms of atrial flutter,atrial fibrillation,atrial premature beats,atrial tachycardia,and interior conduction,differences were detected by 24-hour holter electrocardiography.Echocardiographic features indicated mild heart enlargement in 19 cases,medium enlargement in 4 cases,severe enlargement in 3 cases,atrial septal defect in 5 cases,ventricular septal defect in 3 cases,atrial septal defect coupled with patent ductus arteriosus in 1 case,congenital total anomalous pulmonary venous cormection in 1 case,and patent foramen ovale closure in 12 cases.Twenty-three patients had heart failure.Digoxine,amiodarone and Betaloc were administered to the patients for maintaining their heart functions.No antiarrhythmic drug therapy was used in 2 patients.Twenty-six of the patients (78.8％) had normal electrocardiographic sinus rhythm within 3 to 18 months after their discharge from hospital.Three of the patients (9.1％) still had CAT symptoms in their eletroccardiogram,but their heart rates were kept under control during the 12-month follow-up clinical visits.Of 26 children with cardiac enlargement,echocardiograms in 21 cases (80.8％) returned to normal within 1-3 months after their electrocardiograms returned to normal,and for the other 5 cases (19.2％),the recovery took 6-12 months.One patient died and 3 patients did not participate in the follow-up visits.Conclusions CAT is often found in newborns and infants.Its diagnosis relies on electrocardiography and 24-hour holter electrocardiography.Treatment with Digoxine,and/or β-receptor block,and amiodarone according to with the heart functions of patients can restore sinus rhythm,and achieve good prognostic results.

Objective To investigate the clinical characteristics,diagnosis,treatment and prognosis of hypertrophic cardiomyopathy(HCM) in children.Methods Twenty-five cases of children confirmed with HCM in Beijing Children's Hospital from October 2000 to September 2013 were analyzed retrospectively through their clinical manifestations,laboratory tests,treatment and prognosis.Results HCM was found to be more common in older children.The average age of the patients in the studied cases was 8 years and 9 months and the male to female ratio was 3.1:1.Their clinical manifestations were as the follows:5 cases with shortness of breath and fatigue,4 cases with chest tightness and long breath,3 cases with precordial discomfort,5 cases with cough and wheezing and found to have cardiac abnormalities,8 cases found with asymptomatic heart murmurs with no other symptom,2 cases with syncope episodes,6 cases with a clear HCM family history,3 cases with a family history of infant deaths (specific condition not clear).ECG:18 cases showing left ventricular and/or right ventricular hypertrophy and ST-T changes,3 cases showing abnormal Q waves,2 cases showing ST-T changes,2 cases with Ⅰ ° atrio-ventricular block,1 case with left bundle branch block,and 1 case with left anterior division block.Cardiac enzymes were elevated in 5 cases.Chest X-rays showed enlarged heart shadow in 17 cases.Echocardiography revealed non-obstructive hypertrophic cardiomyopathy in 23 cases and obstructive hypertrophic cardiomyopathy in 2 cases.Left ventricular systolic function was decreased in 2 cases,and diastolic dysfunction in 3 cases.Twenty-one patients took oral metoprolol,1 patient took verapamil,1 patient took propranolol and 2 patients took no medication.The follow-up period of 2 months to 13 years witnessed 2 cases of death and 23 cases of survival.Conclusion HCM in children lacks specific clinical manifestations and the conditions of the patient are usually severe with progressive development.HCM is one of the main reasons of sudden death in adolescent,with poor prognosis.

Objective To study the clinical characteristics and curing methods of non-compaction of ventricular myocardium(NVM) in children with a view to improve its diagnosis and treatment.Methods From Jan.2009 to Dec.2012,the clinical data,treatment and follow-up of 22 patients with NVM in Beijing Children's Hospital Affiliated to Capital Medical University were analyzed.Results The 22 patients included 13 boys and 9 girls aged from 4 months to 13 years and 3 months with an average age of 3 years and 7 months.Five of them had a family history of cardiac diease.Twenty patients suffered from ventricular dysfunction,with 2 cases at level Ⅰ,5 cases at level Ⅱ,7 cases at level Ⅲ and 6 cases at level Ⅳ.Asymptomatic heart murmur was heard in 6 patients and creatine kinase car-diac isoenzymes raise was found in 6 patients.X-ray indicated that heart shadow enlargement and electrocardiographic abnormalities in all 22 patients.Echocardiography features of all cases indicated left ventricular enlargement,and 20 cases of the children had ventricular systolic dysfunction.Left ventricle was detected in 21 patients,while double ventricle dysfunction detected in 1 patient.Thrombus was found in none of the patients.Magnetic resonance imaging was performed in 8 cases of the patients and CT was performed in 14 cases,all of them showed abnormalities.Anti-heart failure medications were administered to 20 patients and aspirin to all of the children.The patients were followed up for 0.5 to 3.0years.Two patients died from heart failure during the follow-up.In 2 cases whose cardiac ejection fraction was more than 60％ had little change of the internal diameter of left ventricle and cardiac function.In 3 cases,the left ventricular diameter narrowed by 3 to 5 millimeter and ejection fraction increased by 5％ to 10％ over the previous.In 5 cases,the left ventricular diameter expanded by 5 to 7 millimeter and ejection fraction decreased by 3％ to 5％.In 10 cases,the left ventricular diameter and heart function had no significant change.Conclusions The main clinical manifestions of NVM in children are cardiac dysfunction,and the prognosis is usually poor.Echocardiography is the principal means of diagnosis.Magnetic resonance imaging can contribute to the diagnosis.

Objective To study the clinical characteristics and therapy of children with idiopathic ventricular tachycardia(IVT).Method Clinical features,laboratory examination,treatment and outcomes of cases involving 36 children with IVT were retrospectively and statistically analysed.Results IVT often happened in teenagers.The average age of selected patients was 7 years and 8 months,and the ratio of male and female was 1.11.Electrokardiogram(EKG)results showed 23 cases(63.8%)were VT that arised from the left ventricular tachycardia(ILVT)with right bundle branch block,and 13 cases(36%)were VT that arise from the right ventricular outflow tract(RVOT VT)with left bundle branch block.Among the 23 children with tachycardia,15 children had palpitation,2 children had syncope.Of the 13 children with right ventricular tachycardia,3 children had increased heartbeat,and 1 child suffered from weakness,others had no significant clinical symptoms.Cases with ILVT had more serious clinical symptoms than cases with right ventricular tachycardia.It was of marked significance to compare their differences(P

At the beginning of the 1980s, a concept of viable but non-culturable(VBNC) was suggested. VBNC is a survival strategy adopted by microorganisms when they are exposed to environmental stress. This article try to make a summary of research of the conditions of VBNC formation, recovery of culturability and methods of VBNC cells detection. In addition, introduces the first growth factor of microorganisms-Rpf.

Objective:To investigate the influence of laparoscopic versus open hepatectomy on the stress reaction of patients.MethodsRetrospectively 30 cases who received operation of laparoscopic and open left lateral lobectomy of liver for stones in bile ducts within left lobes of lives were selected form May 2006 to September 2010.The serum level of neutrocytes (N),adrenaline (AD),cortisol (Cor),blood glucose (BG),white blood cell (WBC),Natural killer cell ( NK cell),interleukin-6 (IL-6),C-reactive protein (CRP) were detected preoperatively as well as 24 h,28 h,72 h postoperatively.ResultsAD,Cor reached their peaks after operation,and N,BG,IL-6,CRP reached their peaks in 24 h postoperatively.There were significant difference between O and L groups (P＜0.05).NK cell sank to its lowest level in 24 h postoperatively,and there were no significant difference between the two groups (P＜0.05).ConclusionLaparoscopic and open left lateral lobectomy of liver are two methods curing stones in bile ducts within left lobes of lives,the former process can result in less stress reaction of patients than the latter.