Animals ; Cadmium Compounds ; toxicity ; Cell Proliferation ; Cell Survival ; Cells, Cultured ; Cricetinae ; Cricetulus ; Fibroblasts ; drug effects ; metabolism ; Lactate Dehydrogenases ; metabolism ; Lung ; cytology ; Malondialdehyde ; metabolism ; Quantum Dots

This paper systematically stated the sexual moral problems of the repairment of ruptured hymen resulted form different reasons and the moral principles and requirements for the operator.

Objective To find methods to isolate and purify plasminogen activator (Pla) from artificial culture of Yersinia pestis. Methods Ultrasonication and urea extracting combined by ammonium sulfate salting-out were tried to extract Pla. High performance liquid chromatography(HPLC) was used to purify Pla. The first step was ion exchange and the second was gel filtration, Preparative electrophoresis was used to purify Pla, too. The enzyme activity of the isolated or purificated Pla was detected. Results Both 50% - 60% saturated ammonium sulfate deposition of supernatant of plague bacilli ultrasonication and 0 - 10% saturated ammonium sulfate deposition of supernatant of plague bacilli powder soaked by urea had three bands(Mr about 31×103, 35×103 and 37×103) and lysis rings were 6.5 and 7.2 mm in diameter respectively when the enzyme activity was detected. Pla purified by HPLC was mainly composed of three bands(Mr about 31×103, 35×103 and 37×103), occupying more than 80% of total protein weight and lysis ring was 5.0 mm in diameter. Pla purified by preparative electrophoresis mainly consisted of three bands(Mr about 31×103, 35×103 and 37×103) with other proteins of low concentration nearby, no lysis ring was detected. Conclusions Pla is collected by the methods of ultrasonication and urea extracting. Priliminary purification of Pla can be achieved by HPLC and preparative electrophoresis.

Objective To investigate the clinicopathologic characteristics,therapy and prognostic factors of small cell carcinoma of the cervix.Methods Clinical and pathological data of eight patients were analyzed retrospectively.Results Eight patients all presented with symptoms of abnormal vaginal bleeding or postcoital spotting.One patient had stage Ⅰ b1 disease,2 had stage Ⅰ b2 disease.2 had stage Ⅱ b disease and 3 had stage Ⅲ b disease.Histopathologic findings showed the small tumor cells had scant cytoplasm,round nuclei,absence of nucleoli,and finely dispersed chromatin.Immunohistochemical findings were positive in 7 cases for neuron-specific enolase.Three patients with stage Ⅰ b disease and 1patient with stage Ⅲb disease underwent radical hysterectomy and postoperative chemotherapy.with or without radiotherapy,and the survival period was 64,22,14 and 6 months respectively.Two patients with stage Ⅱ b disease and 2 with stage Ⅲ b disease underwent chemotherapy and radiotherapy,and the survival period was 25,9,10 and 5 months respectively.Conclusions Immunohistochemical analysis using several kinds of neuroendocrine markers is helpful in establishing the correct diagnosis in addition to focusing on characteristic histopathological features.It is necessary to use comprehensive treatment including surgery,chemotherapy and radiotherapy for patients with small cell carcinoma of the cervix.Chemotherapy may play an important role in the treatment.

Objective To develop a field psychological emergency rescue chest to improve mental health service during disaster relief.Methods The instruments and medicine involved in for mental health were determined based on service orientation,function design and expert survey,and the psychological emergency rescue chest was developed based on optimization of the external and internal structures of field Ⅳ-type chest.Results The chest developed was composed of office instruments,psychological devices,logistics instruments and first-aid medicine for mental health.conclusion The chest gains advantages in design,structure,size,transport,utilization,equipped devices and function integration,and thus is worthy promoting for field mental health service during disaster relief.

Objective To dynamically observe the changes of the plasma superoxide dismutase(SOD) activity and malondialde-hyde(MDA) content of rabbits with hemorrhagic shock in high latitude .Methods 28 rabbits were randomly divided into 4 groups :0 .9% NaCl group ,7 .5% NaCl group ,Voluven(6% HES 130/0 .4) group and control group .The plasma SOD activity and MDA content were measured before shock .At 30 minutes of shock and 30 minutes later of volumetric resuscitation .Then the changes of MAP were observed .Results There were no static difference among 4 groups in the levels of SOD and MDA before shock ;at 30 minutes of shock ,the SOD activity was reduced signicantly and the MDA content was increased in each group (P<0 .01) .Afer fluid infusion there were no obvious change in the plasma levels of SOD and MDA compared with those of shock in 0 .9% NaCl group and in 7 .5% NaCl group(P>0 .05) ,whereas in Voluven group ,compared with those in 0 .9% NaCl and 7 .5% NaCl group the SOD activity was elevated signicantly and the MDA content was decreased (P<0 .01) .Conclusion Voluven can be used in scan-venging oxygen free redicals by recovering the plasma SOD activity in rabbits with hemorrhagic shock in high latitude .

BACKGROUND:The self-ligating bracket is superior to the conventional bracket in orthodontic treatment, but there are a lot of controversies. At present, researchers have different views on the function of self-ligating brackets. OBJECTIVE:To summarize the comparative study of self-ligating brackets and conventional brackest with the direction and development in recent years. METHODS:A computer-based search of PubMed (2000-2014) and CNKI (2000-2014) databases was done for relevant articles, using the key words of “self-ligating brackets; conventional orthodontic brackets” in English and Chinese, respectively. RESULTS AND CONCLUSION:Self-locking brackets saves chair side time, which has been confirmed and accepted. There are different views for the issue that self-ligating brackets can reduce friction in orthodontic treatment. It is widely accepted that, the self-ligating brackets using thin round wire had less friction than the conventional brackets; whether the friction of self-ligating brackets in the closed gap and fineness adjustment stages is less than the conventional brackets stil remains unclear, which need further clinical comparative studies. The self-ligating brackets showed no significant difference with the conventional brackets in arch expansion, reducing anchorage loss and root adsorption. The majority of relevant studies is performedin vitro, and cannot exactly simulate the dental conditions. A large-size experiment with the uniform criteria for therapeutic efficacy is needed to objectively evaluate self-ligating brackets.

AIM:To study the senescence of human umbilical vein endothelial cells(HUVECs) and Bcl-2,Bax gene expression associated with apoptosis induced by angiotensinⅡ(AngⅡ).METHODS:HUVECs were cultured in vitro and the cell viability was observed by methyl thiazolyl tetrazolium(MTT).HUVECs were intervened by AngⅡ and valsartan(AngⅡ type 1 receptor blocking) and divided into 3 groups:the control group,AngⅡ group(stimulated with AngⅡ10-6mol/L for 48 h),valsartan group(valsartan was added to cells 1 h before 10-6mol/L AngⅡ treatment).?-gal staining aod cell cycle analysis were used to identify the cell aging status.Morphologic changes and percentage of apoptosis were assayed with Hoechst33258 under fluorescent microscope.The expressions of Bcl-2 and Bax,and the apoptosis-associated genes were detected by immunocytochemical staining,RT-PCR and Western blotting.RESULTS:The cell viability by AngⅡ-induced cells was(81.9%?4.1)%,the positive cell number of ?-gal staining was significantly higher in AngⅡ-induced cells(80.10%?6.81)% than that in the control cells.The cell cycle was at G0-G1(91.36%?6.45)%,the apoptotic cells significantly increased(31.84?2.86)% under fluorescent microscope.In valsartan group,Bcl-2 mRNA and protein expression increased markedly(P

Objective By analyzing the epidemiological characteristics and trends of brucellosis in Ji'nan City,to provide a scientific basis for further prevention and control of the disease.Methods Serum samples of suspected brucellosis patients were collected from every county (city,district) of Ji'nan City from 2008 to 2014,and these samples were screened by Rose-bengal plate agglutination test (RBPT).Then positive samples were confirmed by Standard tube agglutination test (SAT),and experimental data and results were analyzed by statistics.Results Totally 2713 serum samples of suspected brucellosis patients were tested,and 200 were positive by SAT.Temporal distribution:the serum antibody positive specimens were detected each month throughout the year,and the results showed clear seasonal prevalence by concentrating from March to September (82.07％,151/184).Population distribution:the serum antibody positive rate of males was higher than that of females,the ratio was 2.08:1.00,and the cases were found among 15 to 75 years old,while concentrated from 30 to 65 (67.00％,134/200).Spatial distribution:except Huaiyin District,positive samples were detected in all other 10 counties (cities,districts) of Ji'nan City,most of them (92.5％,185/200) in Shanghe,Zhangqiu,Changqing,Shizhong and Licheng counties (cities,districts).Conclusions Brucellosis epidemic in Ji'nan is serious,and cases have occurred mostly in spring,summer and autumn.It is recommended that health propaganda and education should be strengthened in order to enhance selfprotection awareness of the exposed population,and then improve the physical examination for early discovery,early reporting and early treatment.At the same time,it is important to cooperate with the Department of Livestock to prevent and control brucellosis.

Objective To compare the therapeutic effect of combined fascia sheath suspension and frontal muscle flap suspension in the treatment of congenital severe congenital ptosis.Methods 46 cases (58 eyes) with congenital severe upper eyelid prolapse who were treated from March 2015 to March 2016 in Eye Hospital of Hebei Province were selected.The patients were divided into two groups:combined fascial sheath suspension group and frontalis muscle flap suspension.Comparisons of postoperative patients with eyelid height,eyelid radian,corneal exposure with eyes closed,eyelid activity,complication of the situation were carried out.And patient satisfaction survey was conducted.Results The effective rate of combined fascial sheath suspension group was 93.10％,the complication rate was 6.9％,and the patient satisfaction rate was 91.22±0.37,significantly better than the frontal muscle flap suspension group of patients (75.86 ％,24.14 ％ and 75.05 ± 0.28,respectively).The time of closure of the eyelid was shortened,the complications were less,and the eyelid had better activity.The difference between the two groups was statistically significant (P＜0.05).Conclusions Combined fascia sheath for congenital severe upper eyelid droop is significant,with fewer complications and a higher rate of satisfaction,which is worth clinical promotion.