Objective To synthesize 628F-Py-AMD3465,to investigate its biodistribution in mice and to perform the microPET/CT imaging on mice bearing human lung cancer cell (A549).Methods AMD3465 quaternary ammonium salt precursor was directly labeled with 18F,then 628F-Py-AMD3465 was synthesized through nucleophilic reaction,hydrolysis,neutralization and the product was purified using HPLC.The labeling yield and radiochemical purity were analyzed by HPLC.Fifteen Kunming mice were injected with 5.55 MBq of 628F-Py-AMD3465 and sacrificed at 5,20,40,60 and 120 min postinjection.The selected tissues were harvested and weighed,and the radioactivity in the tissues was measured by an automated γ-spectrometer.The ％ID/g was calculated.MicroPET/CT studies were performed on A549-bearing mice after injecting 6-18F-Py-AMD3465 through vena caudal.Paired t test was used.Results 6-18F-Py-AMD3465 was successfully synthesized with the labeling yield of (9.0±2.0)％,the total synthesis time was about 60 min,and the radiochemical purity was more than 98％.Biodistribution studies showed that the radiouptake was higher in the kidneys and bladder of normal mice,which demonstrated that 6-18 F-Py-AMD3465 was mainly excreted through the kidneys.Biodistribution in A549-bearing mice was similar to that in normal mice.The tumor/muscle ratio at 40 min was 5.0,but the radiouptake of the tumor was still lower than that of the normal lung:(8.05±0.35) ％ID/g vs (9.33±0.66) ％ID/g;t=5.26,P＜0.05.MicroPET/CT imaging showed that the high-uptake location of 6-18F-Py-AMD3465 in tumor-bearing mice was similar to the normal mice,and the tumor uptake reached the maximum level at 45 min post-injection (SUV 0.67).Conclusions 6-18F-Py-AMD3465 can be synthesized by a simple method.A lower uptake could be shown in the tumor compared to that in the lung and the tracer has limited diagnostic value for lung cancer.

Objective To investigate the metabolic rules of surfactant protein A and D(SP- A,SP- D )in bronchoalveolar lavage fluid(BALF)in human fetal lungs during gestational ages. Methods BALF with 30 mL saline was performed on clinically collected human fetus with induction of labor by water- bag Their BALF was respectively retrieved [total retrieval rate(85. 6% ? 13 1)% ]for analysis of protein content. The BALF SP - A and SP - D from fetus of various gestational ages or newboms were detected by RPHA and ELISA. Results The total protein in BALF gradually increased since 10th week to newborn peak during lung development. And SP - A and SP D were respectively updated from(0.34 ?0.07 ) ,(0.05?0.01) ng/L to newborn climax[ (6 42 ? 0 36),(1.22 ? 0 13)ng/L] .Conclusions The protein in BALF gradually increases with fetal growth and lung development. SP-A and SP- D may reach prenatal climax and become the main indicator of newborn lung maturity.

Animals ; Cell Line, Tumor ; Female ; Humans ; Mammary Neoplasms, Experimental ; diagnosis ; metabolism ; pathology ; Mice ; Mice, Nude ; Neoplasm Transplantation ; Organometallic Compounds ; pharmacology ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; Radioisotopes ; Radiopharmaceuticals ; pharmacology ; Random Allocation ; Rhenium ; Tumor Burden ; drug effects ; bcl-2-Associated X Protein ; metabolism

ObjectiveTo study the correlation between human erythrocyte membrane phospholipid profile and insulin sensitivity in elderly diabetic patients. MethodsThe levels of phosphatidylcholine (PC), phosphatidylserine(PS),phosphatidtlinostiol(PI),phosphatidylethanolamine(PE),the maximum erythrocyte deformation index(DImax) , the maximum erythrocyte aggregation index(AImax) and glucose disposal contant Ki (KITT) were measured in 32 cases of elderly diabetics and 30 healthy old subjects. ResultsThe KITT was lower in diabetic patients than in normal controls (P

MicroRNAs (miRNAs) are a group of endogenous non-coding small RNA molecules of 21-25 nt. They can regulate gene expression at the transcriptional level through interaction with inhibition of target gene translation, participating in a variety of important biological processes. Increasing studies have found that miRNA plays a very important role in the development and progression of tumor, and that several miRNAs are closely related to the development of some tumors. Not only the miRNAs in the tissue, but also those in the peripheral blood are involved in the tumorigenesis, and they may be taken as biomarkers for diagnosis of patients, casting new lights on the early diagnosis in clinical practice. Detection of tumor-specific miRNAs in the blood is of great importance for the early diagnosis of tumors.

Objective To comparatively study the differences of 18F‐FDG imaging agent by three kinds of different intravenous injection method for conducting PET / CT examination in aspects of the puncture success rate ,residual amount of drug injection and staff ray exposure time and their significance .Methods 240 patients with PET /CT examination were randomly divided into the group A ,B and C ,80 cases in each group .The drug injection adopted the traditional direct injection ,indwelling catheter injection and scalp venous needle connecting syringe(indwelling bubbles) .The puncture success rate ,drug residues and staff contacting radio‐pharmaceuticals time were compared among 3 groups .The obtained relevant data were statistically analyzed .Results The puncture success rate in the scalp venous needle connecting syringe (indwelling bubbles) and the indwelling catheter injection was higher than that in the traditional direct injection and the staff contacting radiopharmaceuticals time was significantly decreased ,the differ‐ences among them were statistically significant(P< 0 .01) ;the radioactive drugs residue in the scalp venous needle connecting syr‐inge was significantly decreased than that in other two kinds of injection method ,the difference was statistically significant (P <0 .01) .Conclusion The injection method of scalp intravenous needle connecting syringe (indwelling bubbles) significantly increases the puncture success rate ,reduces the radioactive drug residue ,at the same time decreases the staff radiation exposure time ,this method has the advantage in the radionuclide injection .

Consensus Development Conferences as Topic ; Endoscopy ; Europe ; Humans ; Nose Neoplasms ; diagnosis ; surgery ; Skull Base Neoplasms ; diagnosis ; surgery

Objective To investigate the changes of blood lipid,endothelin(ET)and carbohydrate tolerance in simple obesity children.Methods Serum total cholesterol(TC),triglyeride(TG),low density lipoprotein(LDL),endothelin(ET) and oral glucose tolerance test(OGTT) of 436 cases(light obesity group 242,moderate obesity group 138,heavy obesity group 56) were detected respectively.Results The levels of TC,TG,LDL,ET and OGTT in 3 simple obesity groups were all higher than those in control group obviously and there were significant differences.The significant positive correlation between the obesity children serum lipids,ET and obese degrees were observed.Four insulin resistant children were found in heavy obesity group and none in other groups.Conclusions The levels of serum lipids and ET increases in obesity children and the OGTT decreases in some heavy obesity children.For preventing the obesity related health problems,the simple obesity children should be paid more attention to earlier.

OBJECTIVE:To evaluate the therapeutic effect of compound glycyrrhizin plus mizolastine for patients with generalized neurodermatitis(GND)and its influence on patietents' psychology.METHODS:60 patients with GND were randomly assigned to receive compound glycyrrhizin plus mizolastine(treatment group)or mizolasitine alone(control group)for 28 days.The psychological factors were examined before and after treatment using self-rating anxiety scale(SAS),and the curative effects and the psychological changes between two groups were compared.RESULTS:The SAS scores of treatment group and control group were 30.53? 1.50 and 33.20? 1.67,respectively(P

OBJECTIVE:To systematically evaluate the efficacy and safety of simvastatin vs. pravastatin in the treatment of hy-perlipidemia,and provide evidence-based reference for the clinical treatment. METHODS:PubMed,Medline,EMBase,Cochrane Library and CJFD were retrieved to collect the randomized controlled trial(RCT)of efficacy and safety of simvastatin(test group) and pravastatin (control group) in the treatment of hyperlipidemia. The methodological quality of included studies was evaluated. The Rev Man 5.2 software was chosen for data analysis. RESULTS:14 RCT involving 1 019 patients were included. Meta-analysis showed that simvastatin had more significant effect in the decreasing of TC [MD=-0.34,95%CI(-0.52,-0.16),P<0.001] and LDL-C[MD=-0.31,95%CI(-0.45,-0.17),P<0.001] than pravastatin;and simvastatin and pravastatin had the similar effect in TG[MD=-0.06,95%CI(-0.18,0.05),P=0.28)] and HDL-C[MD=0.00,95%CI(-0.04,0.04),P=0.85]. Adverse drug reaction rate results showed they were similar[OR=0.70,95%CI(0.36,1.39),P=0.31]. CONCLUSIONS:Simvastatin is more effective in lipid-lowering than pravastatin with similar safety. Due to the limited number and low quality of included studies,it remains to be further verified with more reasonably designed,multi-center and large-sample studies.