The vaccine based on dendritic ceil has becomes a new research focus in the biotherapy of breast cancer. And the ways of making the vaccine are vary and no one approach has been shown to be superior to another.

Objective To investigate the sensitivity of the real-time fluorescence PCR technique and the bacterial culture for detecting the colonization of group B Streptococcus(GBS)in late pregnant women.Methods 2 specimens were collected from preg-nant women genital tract-rectal secretions swabs,one specimen for conducting the bacterial culture and another for conducting the real-time PCR technique to detect genital GBS.The accuracy and rapidness were compared between the two methods.308 cases of pregnant women were divided into the GBS positive group and the GBS negative group according to the detection results of the real time real-time fluorescence PCR technique.The relation between the occurrence of premature rupture of membranes with GBS was investigated by the comparative analysis.Results Among 308 pregnant women with GBS detection,18 cases were positive by the ordinary bacterial culture with the positive rate of 5.8%(18/308),while 28 cases were positive by the real-time fluorescent PCR with the positive rate of 9.4%(29/308).In the GBS positive group detected by PCR,the premature rupture of membranes occurred in 9 cases with the positive rate of 31%,while in the GBS negative group detected by PCR,which occurred in 33 cases with the pos-itive rate of 11.83%.Conclusion This survey shows that the positive detection rate of the real-time fluorescent PCR technique is significantly higher than that of the bacterial culture method,the application of this detection technique for detecting GBS provides the basis for rapidly diagnosing GBS and conducting the prophylactic use of antibacterial drugs more accurately and more effectively.

Objective:To explore the lipid-regulating effect and safety of atorvastatin combined fenofibrate therapy in patients with coronary heart disease (CHD)complicated diabetes mellitus (DM).Methods:A total of 100 pa-tients with CHD complicated DM were enrolled.Based on routine treatment,patients were randomly and equally di-vided into statin group (n=50,received 20mg atorvastatin,once/night)and combined treatment group (n=50,re-ceived 20mg atrovastatin once/night,combined fenofibrate 200mg once/d).Serum levels of total cholesterol (TC), triglyceride (TG),low density lipoprotein cholesterol (LDL-C)and high density lipoprotein cholesterol (HDL-C) were measured before,six and 12 weeks after treatment,levels and standard-reaching rates of above blood lipid were observed before and after treatment;adverse reactions and clinical events were recorded.Results:Compared with before treatment after six-week treatment,there were significant reductions in serum levels of TC,TG and LDL-C in both groups,and they further decreased after 12-week treatment (P <0.05~ <0.01),compared with statin group after 12-week treatment,there were significant reductions in levels of TC [(4.35±0.71)mmol/L vs. (4.09±0.56)mmol/L],TG [(2.35±0.62)mmol/L vs.(1.65±0.49)mmol/L]and LDL-C [(2.01 ±0.39) mmol/L vs.(1.85±0.22)mmol/L]in combined treatment group,P <0.05 or <0.01;HDL-C level significantly rose in both groups after treatment,and it′s more significant after 12 weeks,but there was no significant difference between statin group and combined treatment group (P >0.05).After 12-week treatment,standard-reaching rates of LDL-C,TG,HDL-C,all standard-reaching of above three indexes and non HDL-C (70%,68%,80%,58% and 70%)in combined treatment group were significantly higher than those of statin group (50%,46%,48%,10% and 48%)respectively,P <0.05 or <0.01. No severe adverse reactions were observed in two groups during treatment. Conclusion:Atorvastatin combined fenofibrate treatment is more effective than atorvastatin monotherapy in patients with coronary heart disease complicated diabetes mellitus.It can improve blood lipid level more comprehensively, contribute to comprehensive standard-reaching of blood lipids,and possess better safety and tolerance.

Objective:To establish an animal model of oral lichen planus (OLP). Methods:Human non-erosive OLP lesion tissue was surgically transplanted into dorsal hypoderm or tongue abdomen in 10 severe combined immunodeficiency (SCID) mice, thereafter, growth and possible alterations of histopathological characteristics of the xenografts were observed for 2 weeks. Results:All the xenografts transplanted into dorsal hypoderm or tongue abdomen healed well.Partial liquefaction and subepithelial lymphocytes diffuse infiltration were observed in epithelial basement membrane in the first week after transplantation. During the subsequent week, the degenerated moiety was hardly to be seen, and the number of subepithelial lymphocytes was gradually decreased. Conclusions:The epithelia of OLP xenografts grow well in SCID mice but can not keep its histopathological features.

Objective To investigate infection rate of human papillomavirus as well as the correlation between cervical precancerous lesions and co-infection of human HPV,herpes simple virus-2 (HSV-2) and cytomegalovirus (CMV) in Chinese women of childbearing age in Kunming,Yunnan province.Methods A total of 2128 women (18-24,25-34,35-49 years of age),who had healthy care examination in our institute from January 2010 to March 2011,were selected prospectively in this study.The infection of HPV,HSV-2 and CMV were detected by real-time fluorescence quantitative polymerase chain reaction (FQ-PCR) and cervical precancerous lesions were determined by the ThinPrep liquid-based cytology test (TCT).Results The overall infection rates of high risk HPV (HR-HPV),HSV-2,CMV were 11.04％(235/2128),3.52％ (75/2128) and 5.26％ (112/2128),respectively.The HR-HPV infection rates in groups of Negative for Intraepithelial Lesion or Malignancy (NILM),Atypical Squamous Cells of Undetermined Significance (ASCUS),Low grade Squamous Intraepithelial Lesion (LSIL),High grade Squamous Intraepithelial Lesion(HSIL),and Squamous Cell Carcinoma (SCC) were 4.29％ (82/1912),55.93％ (66/118),84.62％ (44/52),93.19％ (41/44) and 2/2,respectively.HR-HPV infection rates was increased with the development of cervical lesion (r =0.644,P =0.000).No significant difference on the infection rates of HR-HPV and HSV-2 was identified between different age groups (x2 =2.979,P =0.226; x2 =0.798,P =0.671).The peak age groups for CMV infection (7.62％) were 18 to 24 years old and the infection rates of CMV decrease with age.No significant difference of HSV-2 and HR-HPV coinfection was found between the TCT-abnormal (3.24％,7/216) and control groups (2.41％,46/1912,x2 =0.557,P=0.455),and no relationship was found between HSV-2 and HR-HPV infection groups (OR =0.56,95％ CI:0.17-1.82).The infection of HR-HPV were related significantly with CMV infection (OR =3.14,95％ CI:1.25-7.86).Conclusion HR-HPV infection appears to be the key risk factor for cervical cancer and synergistic interaction may occur between CMV and HPV infections in the development of cervical lesion.

Objective To evaluate contrast-enhanced ultrasound (CEUS) for the diagnosis and follow-up of hepatocellular carcinoma ( HCC) patients after percutaneous radiofrequence ablation ( RFA). Methods The data of 46 HCC cases were reviewed in our study. Results of contrast enhanced computed tomography (CT) , ultrasound contrast agent sonography and grey ultrasound were compared with each other pre- and after percutaneous radiofrequence ablation. Results Contrast agent ultrasound imaging had the same value with CT in preoperative diagnosis of HCC, with postive likelihood ratio of 1.26 and 1.31, respectively,sensitivity of 97% and 91% and specificity of 23% and 31% respectively. For grey ultrasound the positive likelihood ratio was 0.99, sensitivity and specificity was 76% and 23% respectively. The sensitivity and specificity of contrast-enhanced ultrasound after percutaneous radiofrequence ablation was 60% and 90% respectively, and the postive likelihood ratio and negative likelihood ratio was 6. 18 and 0. 44 respectively. The difference was significant while compared with CT (P = 0. 012). All cases were followed-up from 1 to 9 months, and all were alive with recurrence found by contrast-enhanced ultrasound in 3 cases. Conclusions Contrast agent ultrasound imaging is sensitive and effective in the diagnosis of HCC and follow-up after percutaneous radiofrequence ablation.

Objective To investigate haemodynamic change during hemodialysis and analyze effects of cardiac index (CI) on hemodynamic parameters and associated influencing factors in maintenance hemodialysis (MHD) patients.Methods Seventy-five patients bearing an arteriovenous fistula (AVF) entered the study.Cardiac output (CO),cardiac index (CI),central blood volume (CBV) and peripheral vascular resistance (PR) were determined by ultrasound dilution technique at the end of 1 hour,2 hours and 3 hours of dialysis.AVF blood flow (Qa) was also measured with the same device before haemodynamic parameters investigation.Results Mean age of patients was (55.84 ±12.39) years old (range 21-81 years) and 43 patients (57.3％) were female.Systolic arterial pressure,SV,CO,CI and CBV were significantly declined and no significant change for diastolic arterial pressure and heart rates at the end of 2 hour and 3 hour hemodialysis,whereas PR was increased gradually during hemodialysis.Patients were divided into there groups with CI less than 2.5 L·min 1·(m2)-1,2.5-4.2 L·min-1·(m2)-1 and more than 4.2 L·min-1 ·(m2)-1 at the end of 1 hour dialysis.Statistically significant decreasing SV,CO and increasing PR were detected in patients with CI＜2.5 L·min-1· (m2)-1 and 2.5-4.2 L· min-1· (m2)-1,compared with CI＞4.2 L·min-1· (m2)-1 group (P＜0.01).The hemodynamic change was the most obvious in the group of CI less than 2.5 L· min-1· (m2) 1,and no significant changes happened in CI＞4.2 L·min-1 ·(m2)-1 group.Some factors were found to be associated to CI values.Qa and systolic arterial pressure had positive relationship with CI,while age and diabetes had negative relationship with CI.Conclusions Systolic arterial pressure,CO,CI and CBV decrease and PR increases during hemodialysis.Obvious change occurs when CI is less than 2.5 L·min-1· (m2)-1.CI is associated with Qa,systolic arterial pressure,age and diabetes.

AIM: To elucidate the relations among proadrenomedullin N terminal 20 peptide (PAMP), adrenomedullin(ADM) and angiotensin Ⅱ (Ang Ⅱ). METHODS: Tissue slices of rat aorta were incubated as follows: (I) increasing concentrations of Ang Ⅱ (10-9, 10-8, 10-) mol/L); (Ⅱ) increasing concentrations of PAMP(10-9, 10-8, 10-)mol/L). The tissue and incubation concentrations of PAMP, ADM and Ang Ⅱ were measured by the radioimmunoassay (RIA). RESULTS: The tissue and incubation concentrations of PAMP and ADM were concentration - dependently increased by Ang Ⅱ, but the tissue and incubation concentrations of Ang Ⅱ can not effected by PAMP. CONCLUSION: AngⅡ markedly stimulate the release of ADM and PAMP. It may be one of the factors which regu- late the synthesis and release of ADM and PAMP. The regulation may play an important role in homastasis regulation of cardiovascular system.

Objective To investigate the MR manifestations and diagnostic value in patients with choroidal fissure cyst of the brain. Methods Characteristic MR findings in 16 patients with choroidal fissure cyst were retrospectively analyzed, and the correlation between MR imaging and clinical manifestations was reviewed. Results The cysts were situated within the choroidal fissure in all cases, representing as cystic lesion with clear border, no detectable soft tissue mass in the cyst wall or adjacent area, homogenous signal intensity identical to CSF on all sequences, with the average size of 0.9 cm?1.3 cm?1.5 cm, and no associated edema. Gd-DTPA was performed in 6 cases and revealed no evidence of enhancement. Conclusion The choroidal fissure cyst of the brain is a benign and congenital developmental abnormality, and has minor clinical significance. Because of its specific anatomic location, the choroidal fissure cysts simulate intraparenchymal cystic lesions on axial images. Coronal and sagittal MR imaging can be used to delineate its extraaxial location and make the correct diagnosis, and, thus, differentiate with other cystic lesions.

Objective:To observe the influence of commonly used dental cast metal posts and cores on magnetic resonance imaging (MRI)for head and neck.Methods:Six kinds of posts and cores made of metal alloy (Ni-Cr alloy,Co-Cr alloy,titanium alloy,pure titanium,Pd-Au alloy and Au-Pt alloy)were respectively fixed on the mucosa of left palate of a volunteer.The maxillofacial region of the subjects was scanned by routine head sequences SE-T1WI and TSE-T2WI respectively.Results:ANOVA of factorial design analy-sis indicated significant differences of artifacts among metal materials(F=153.63,P<0.05),scanning sequences(F=70.94,P<0.05)and the number of cast posts and cores(F=102.73,P<0.05).In both sequences the size of metal artifacts were as following:Pd -Au alloy>Co-Cr alloy>Ni-Cr alloy>Au-Pt alloy>titanium alloy>pure titanium;two posts and cores>one post and core;SE-T1WI>TSE-T2WI.Conclusion:Different cast metal posts and cores have different influences on MRI artifact.Reasonably choosing the metal materials and scanning sequences can minimize artifacts on MRI.