Purpose To investigate the value of 11C-CFT PET/CT dopamine transporter (DAT) imaging in differential diagnosis of multiple system atrophy (MSA) and Parkinson's disease (PD).Materials and Methods The 11C-CFT PET/CT images of clinically confirmed MSA patients (21 cases),PD patients (24 cases) and healthy adults (10 cases as normal control) were analyzed retrospectively.The volume of interest (VOI) were drawn manually,and the DAT binding indexes and asymmetry indexes of different regions of striatum,including caudate and putamen,were calculated.The differences of DAT binding indexes and asymmetry indexes among the above three groups were analyzed.Results Compared with the normal control group,the striatal DAT binding indexes of MSA group or PD group were significantly reduced (P＜0.05).There were no significant differences in DAT binding indexes between the MSA group and the PD group (P＞0.05).Compared with the normal control group,the DAT binding asymmetry indexes were significantly increased in the PD group (P＜0.05),but the indexes showed no significant differences in MSA group (P＞0.05).The DAT asymmetry indexes of caudate and putamen in the PD group were higher than those in the MSA group (P＜0.05).Conclusion 11C-CFT PET/CT imaging can detect the degeneration of dopaminergic neurons in striatum.The number of striatal dopamine transporters declines in both MSA and PD patients,but the asymmetry of striatal dapamine transporter in PD patients is higher than that in MSA patients.11C-CFT PET/CT can differentiate MSA and PD.

Objective:To optimize the compatibility conditions of erigeron injection and study the stability after compatibility. Methods:An orthogonal test was employed using the quantity of insoluble particles and the content of rutin as the indices and tempera-ture, solvent and solvent amount as the influencing factors. The results were comprehensively analyzed. According to the results of the orthogonal test, three batches of samples were prepared and observed the stability in 24 hours, including the changes in the number of insoluble particles, pH and total flavonoid content. Results:The optimal compatibility conditions were as follows:the temperature was 25℃, and 250 ml 0. 9% sodium chloride injection was used as the solvent. The appearance and the insoluble particles showed no sig-nificant changes in 24 hours. The total flavonoid content was also stable in 4 hours, but decreased to some extent after then. Conclu-sion:At the clinical dose, erigeron injection in 250 ml 0. 9% sodium chloride injection can keep stable in 4 hours.

Objective: To investigate the trends of chronic obstructive pulmonary disease (COPD) incidence and mortality in China from 1992 to 2021 with age, period and birth cohort, so as to provide insights into the prevention and control of COPD. Methods: The crude incidence rates, crude mortality rates, standardized incidence rates and standardized mortality rates of COPD in China from 1992 to 2021 were collected through the Global Burden of Disease Study 2021 database. The impacts of age, period and cohort on the incidence and mortality of COPD were analyzed using an age-period-cohort model. Results: The standardized incidence rates of COPD in China ranged from 271.24/105 in 1992 to 215.62/105 in 2021, and the standardized mortality rates ranged from 226.08/105 in 1992 to 73.23/105 in 2021, both showing downward trends. Age-period-cohort analysis showed that the incidence and mortality rates of COPD increased with age. The incidence rates rose more rapidly after the age of 35 years, from 138.45/105 in the age group of 35-<40 years to 2 538.61/105 in the age group of 85-<90 years. The mortality rates rose more rapidly after the age of 60 years, from 73.73/105 in the age group of 60-<65 years to 1 053.88/105 in the age group of 85-<90 years. The incidence and mortality risks of COPD declined with time. Compared with the period of 2002-2006, the incidence (RR=0.866, 95%CI: 0.845-0.888) and mortality risks (RR=0.418, 95%CI: 0.394-0.445) of COPD were the lowest in 2017-2021. The incidence and mortality risks of COPD declined with the year of birth. Compared with the 1950-1954 birth cohort, the incidence (RR=0.530, 95%CI: 0.404-0.694) and mortality risks (RR=0.042, 95%CI: 0.007-0.276) of COPD were the lowest in the 2002-2006 birth cohort. Conclusion The incidence and mortality rates of COPD in China from 1992 to 2021 increased with age, but decreased with time and the year of birth.

Objective To investigate the effect of Rho/Rho-kinase inhibitor fasudil combined with conventional vasodilating agents nitroglycerin in treatment of unstable angina pectoris.Methods Twenty patients[mean age (61 ± 11) years old]with unstable angina pectoris (angiospasm in the left anterior descending coronary artery) were selected and divided into fasudil group and control group with 10 cases each by random digits table.All the patients were examined by the acetylcholine stress test.Coronary diameter at the spasm site was measured and compared at baseline and after the administration of nitroglycerin in the following order: intracoronary nitroglycerin (300 g), intravenous fasudil (30 mg, fasudil group) or saline (control group), and again nitroglycerin (300 g) during coronary angiography.Results There was no significant difference in coronary diameter at the first nitroglycerin administration between fasudil group and control group[(38.2 ± 23.6)% vs.(42.6 ± 17.2)% ,P ＞0.05].Coronary diameter at intravenous fasudil and again nitroglycerin administration in fasudil group was expanded, and there was significant difference compared with that of the first nitroglycerin administration[(2.48 ±0.79), (2.51 ± 0.78 ) mm vs.( 2.11 ± 0.62 ) mm](P ＜ 0.01 ), but there was no significant difference in control group (P ＞ 0.05).There was no adverse effect in two groups,and blood pressure and heart rate was stable in fasudil group.Conclusions Fasudil further dilates the site of coronary spasm, which had already been treated with nitroglycerin in patients with vasospastic angina.These findings support and extend the previous results that shows the feasibility of employing fasudil as a novel therapeutic approach for coronary spasm.

BACKGROUND: Tonifying kidney is the main method to treat aging of nervous system, which is characterized by decreasing density of nerve cells,cell aging and deposition of lipofuscin granule in the cytoplasm of nerve cell.OBJECTIVE: To investigate the effect of nourishing kidney and tonifying brain on density and ultrastructural of nerve cell in hippocampal CA1 and CA3 area of aging mouse. DESIGN: Completely randomized and controlled study.SETTING: Institute of Traditional Chinese Medicine of Hunan Province.MATERIALS: The experiment was completed at the Pharmacological Laboratory of Institute of Traditional Chinese Medicine of Hunan Province between September 2000 and November 2003. Totally 30 Kunming mice with 11-month old were selected. Solution of yishen jiannao Ⅰ (zishen prescription) was provided by Agent Laboratory of Institute of Traditional Chinese Medicine of Hunan Province (including 15 g shouwu, 15 g sangshen, 15 g gouqizi, 6 g wuweizi, 30 g danshen, 30 g gegen, 10 g honghua,10 g shichangpu, 10 g yujin, 10 g yuanzhi, 10 g shanzha and scorpion).Scorpion was crushed into power. The rest drugs were decocted with water twice, mixed together and filtered, then the powder of scropion was added.The raw material was 1.0 g/mL.METHODS: Thirty mice were randomly divided into 3 groups with 10 in each group. Mice in control group were given distilled water, those in zishen prescription group were given 20.0 g/kg zishen prescription, and in vitamin E group were given 40.0 mg/kg vitamin E. All mice were perfused with 20 mL/g, once a day for 4 weeks. After 1 hour of the last medication, mice were sacrificed at once at the drugged state. Cranium of mice was sheared and the hippocampal tissue was taken out. Numbers of nerve cells in CA1 and CA3 area were calculated under the microscope to calculate the density of nerve cell.MAIN OUTCOME MEASURES: ① Density of nerve cell in cerebral hippocampus of mice in each group; ② Ultrastructure of nerve cell in cerebral hippocamp us of mice in each group.RESULTS: Totally 30 mice entered the final analysis. ① Density of nerve cell in hippocampal CA1 and CA3 area of brain: Density in zishen prescription group and vitamin E group was higher than that in control group [CA1: (3 707±495), (3 812±281), (257±372) mm-2; CA3:(2 746±262),(2 397±366), (1 992±307) mm-2, t=2.68-8.30, P ＜ 0.05-0.01]. ② Aging of mitochondrion was decreased, deposition of lipofuscin and aging of lysosome in cytoplasm were reduced in zishen prescription group and vitamin E group.CONCLUSION: Granule of nourishing kidney and tonifying brain can defer density decrease of nerve cell and aging of cell in hippocampla area of mice' brain.

OBJECTIVE:To reduce patient waiting time for drugs by improving work efficiency via the optimization of the in-telligent workflow of outpatient pharmacy. METHODS:The problems existing in each link in the workflow after the adoption of au-tomated drug dispensing machine in the outpatient pharmacy of our hospital were analyzed. Measures were developed and imple-mented,on the basis of the factors affecting each link including adding drugs,making up a prescription and dispensing drugs,to optimize the workflow. The effect after the optimization was evaluated,with the time it takes to make up a prescription and to dis-pense drugs and patient waiting time for drugs as the indexes. RESULTS:The averaged time it takes a pharmacist to make up a pre-scription and to dispense drugs and patient waiting time for drugs significantly reduced from 3.4 min,9.3 min and 12.7 min to 1.0 min,6.1 min and 7.1 min respectively,after taking measures such as adjusting the number of the drug types,tracks and positions in the machine,adding the contrasting pictures of the drugs which were similar on the system interface for adding drugs,standardiz-ing the process of adding drugs,improving and allocating information labels,adjusting the process of dispensing drugs and adding new small packages of drugs within 6 months. CONCLUSIONS:The optimized intelligent workflow in the pharmacy can reduce pa-tient waiting time for drugs,increase patient satisfaction and promote the development of intelligent pharmacy.

Objective To characterize the prevalence of plasmid-mediated quinolone resistance determinants qnrA in extended-spectrum β-lactamase(ESBL)-producing Escherichia coli and Klebsiella pneumonia.Methods PCR was used to amplify qnrA gene in ESBL-rpoducing isolates(including 263isolates of Escherichia coli and 99 isolates of Klebsiella pneumonia).Conjugation experiments and southern blot hybridization were employed to definitude the location of the genes in ZJ96 isolate of Klebsiella pneumonia which had positive qnrA and CTX-M genes.Shot gun sequencing was performed for analyzing the complete nucleotide sequence of pKP96,a plasmid containing qnrA and CTX-M-24 genes in ZJ96 isolate.Results qnrA was detected in 5 out of 263(1.9%)Escherichia coli isolates and 8 out of 99(8.1%)Klebsiella pneumonia isolates.pKP96,a conjugative plasmid including qnrA gene and CTX-M-24 gene presented in ZJ96 isolate.The sequence of the plasmid pKP96 displayed the qnrA,CTX-M-24,aac(6')-Ib-cr,tetA and int Ⅰ 1 genes.Conclusion The plasmid-mediated genes,such as qnrA and CTX-M,may facilitate the prevalence of multi-drug resistant strains.

Aim To establish a mouse breast cancer model stab-ly expressing HER2. Methods 4T1-Luc mouse breast cancer cell line was transfected with the full-length human HER2 gene and selected with G418. The HER2 expression in 4T1-Luc stable cells was detected by fluorescence-activated cell sorting ( FACS) and Western blot. 4T1-Luc/HER2 cells were implanted into the mammary fat pads of BALB/c or nude mice. After tumor stabili-zation, mice were randomly assigned into 4 groups for treatment with PBS control, chA21, Trastuzumab, or chA21 plus Trastu-zumab. Tumor volumes were measured and tumor growth inhibi-tion ratios were calculated twice a week. At the end of experi-ment, tumor metastasis in mice was detected by bioluminescence imaging technology. Results Several 4T1-Luc/HER2 stable cell clones were obtained after G418 selection. FACS and West-ern blot analysis showed that all clones expressed HER2 protein at high levels. These 4T1-Luc/HER2 clones showed good tumor-igenicity in mice with steady tumor growth after one week of cell implantation. After 2-3 weeks, metastatic tumor cells were seen in the lung, cheek and groin areas. In BALB/c mice, the tumor growth inhibition ratio was 43. 3% in chA21 plus Trastuzumab group (P<0. 05 vs PBS control), which was higher than chA21 group (11. 1%) or Trastuzumab group (23%). In addition, the luminescence number and density of tumor metastases in lungs were significantly reduced in the antibody combination group. Conclusions The mouse model of spontaneously metastasizing breast cancer with HER2 overexpression is successfully estab-lished. The preliminary study suggests that anti-HER2 antibody combination of chA21 and Trastuzumab has excellent inhibitory effects on tumor growth and metastasis.

Objective:To screen and characterize aptamers against BCR-ABL fusion protein.Methods:A 90bp single stranded DNA( ssDNA) random library was subjected to 13 rounds of selection against BCR-ABL fusion protein by systematic evolution of ligands by expotential enrichment ( SELEX ) method, the selected aptamers were cloned and sequenced.The primary sequences and structure of aptamers were analyzed by Clustal W and DNA Folding Sever and the percentage of the ssDNA pool bound to BCR-ABL core protein were determinated.Results: after 13 rounds selection, the percentage of ssDNA pool bound to BCR-ABL fusion protein increased from 0.3%to 47.1%,the results showed that affinities of the Aptamers were different,the second structure analysis revealed possible stem-loops for binding to BCR-ABL fusion protein,the affinity of aptamer A2 to BCR-ABL fusion protein was highest with Kd values as low as 72 nmol/L.Conclusion:Aptamers against BCR-ABL fusion protein has been identified by SELEX methods from a 90 bp single stranded DNA library.And provide certain reference for the clinical treatment of chronic myelogenous.

Objective To observe the effectiveness of introducing Diazepam into combined aesthesia of Sumianxin and ketamine hydrochloride .Method A total of 80 rabbits of both genders for operation were randomly divided into A , B and C groups .The A group was injected with Sumianxin intramuscularly ( 0.3 mL/kg by weight ) .The B group was injected with Sumianxin and ketamine hydrochloride intramuscularly ( 0.3 mL/kg by weight ) .The C group was injected with Diazepam intravenously ( 1.5 mL/kg by weight ) combined with Sumianxin and ketamine hydrochloride injected intramuscularly (0.3 mL/kg by weight).The aesthetic effects, induction time, anesthesia maintaining time, total anaesthetic dose and operation time were observed , recorded and compared .Result The induction time of the C group was significantly shorter than A and B groups (P<0.01).The initial anesthesia maintaining time of the C group was the longest among the three (P<0.01) with least total anaesthetic dose (P<0.01).The operation time of the C group was the least with best aesthetic effects (P<0.01).Conclusion Introducing Diazepam into combined aesthesia of Sumianxin and ketamine hydrochloride can improve the aesthetic effects .Therefore , this is an optional aesthetic method for time-consuming animal operation or sensitive surgical sites of rabbits .