Objective To determine the accuracy and radiation dose of dual-energy computed tomography (CT) in evaluating solitary pulmonary nodules (SPNs) by virtual non-enhanced images.MethodsSixty-one patients with SPNs including 39 malignant and 18 benign nodules proved by pathology underwent DECT scans. The CT values of SPNs on enhanced weighted average and virtual non-enhanced images were compared by using Liver VNC processing unit in terms of their diagnostic accuracy for distinguishing malignant and benign nodules with a 20 HU threshold. Diagnostic accuracy was compared. In 28 patients of all patients, image noise and quality score of the non-enhanced and virtual non-enhanced images were compared, and radiation doses of each patient were recorded. The paired t test was used to analyze the noise difference between the plain scan and virtual non-enhanced scan. The Mann-Whitney U test was used to analyze statistically significant differences of the image quality score and radiation dose between the non-enhanced scan and virtual non-enhanced scan. ResultsThe sensitivity, specificity and accuracy for distinguishing benign and malignant nodules by using the virtual non-enhanced image of were 89. 7％(35/39), 72.2％ (13/18), 84.2％ (48/57)respectively.The noise of common CT and virtual nonenhanced images were(8. 49 ± 1. 94) HU and( 10. 14 ± 2. 18 ) HU, and there were statistically difference (t＝9.45,P＜0. 01 ). The quality scores of common CT and virtual non-enhanced images were (4.71 ±0. 46 ) and ( 4.42 ± 0. 57 ), and there were no statistical difference ( U ＝ 290. 00, P ＞ 0. 05 ). The radiation doses of common CT and DECT were ( 3. 72 ± 0. 48 ) mSv and ( 3.78 ± 0. 45 ) mSv, and there were no statistical difference ( U ＝ 350. 50,P ＞ 0. 05 ). ConclusionDECT by using virtual non-enhanced images is useful tool to distinguish the benign and malignant SPN without additional radiation dose.

Child, Preschool ; Female ; Hand, Foot and Mouth Disease ; complications ; diagnosis ; therapy ; Humans ; Infant ; Male ; Pulmonary Edema ; etiology ; Radiography, Thoracic

This study was aimed to establish determination method of content and related substances of piperaquine in A rtemisinin and Piperaquine Tablets, and to set the limit of related substance. HPLC was adopted on a SHISEIDO CAPCELL PAK C18 (4.6 mm í 250 mm, 5 μm) using an isocratic mobile phase consisted of acetonitrile: 0.1%trichloroaceticacid:triethylamine (18:82:0.2, V:V:V, pH 2.5) with a flow rate of 1.0 mL·min-1. The column tempera-ture was kept at 30oC and the detection wavelength was set at 216 and 237 nm, separately for the determination of related substance and content. The results showed that piperaquine and its related impurity can be separated effec-tively. The concentration-response relationship was linear over the range of 0.01-0.2 mg·mL-1 (R2=0.999 9). The av-erage recovery rate was 98.14% (RSD=0.77%, n=9). The minimum detection limit was 0.06 μg·mL-1. The solution was stable for 12 h. It was concluded that the method was specific, accurate, sensitive and suitable for the determi-nation of content and related substances of piperaquine in A rtemisinin and Piperaquine Tablets.

Objective To investigate the prevalence rate of healthcare-associated infection(HAI)in a hospital,so as to provide reference for making HAI control measures.Methods The cross-sectional survey on HAI was carried out among all hospitalized patients on May 26,2010,December 12,2012 and December 4,2013,respectively,sur-veyed data were analyzed.Results The prevalence rate was 6.66%(n =116),6.67%(n =113)and 6.33%(n =120)in 2010,2012 and 2013 respectively,and case rate was 7.29%(n=127),7.38%(n=125)and 6.97%(n=132) respectively,intensive care unit(ICU )had the highest infection rate,internal medicine ICU was up to 71 .43%. The main infection site was lower respiratory tract(44.53%),followed by surgical site infection (9.11 %)and uri-nary tract infection (9.11 %).The isolation rate of gram-negative bacteria,gram-positive bacteria and fungi was 60.81 %,20.38% and 18.81 % respectively.Usage rate of antimicrobial agents in three years was 32.95%, 29.87% and 25.59% respectively (χ2 = 13.16,P <0.01 ).Conclusion Prevalence rate of HAI in this hospital is high ,the main pathogen is gram-negative bacteria,the main infection site is lower respiratory tract ,antimicrobial use decreased year by year.Monitor on high risk departments,main sites and pathogens should be intensified.

We have investigated the situation about recent interdisciplinary construction for medical subject from several 985-project universities in China as well as the well-known overseas universities via internet. We also have analyzed the results and in mean time, put forward some related suggestions in order to probe an available strategy of interdisciplinary construction for medical subject in the universities of China.

Objective To evaluate the quality status of recombinant human interferon α1b injection and find out some quality problems.Methods Totally 31 batches of recombinant human interferon α1b for injection and 11 batches of recombinant human interferon α1b injection from two enterprises were examined according to Chinese Pharmacopoeia Volume Ⅲ (2010),and the quality status of recombinant human interferon α1b injection was evaluated by statistical analysis of the results.Results All 42 batches of samples were qualified.The production process of each enterprise was steady.Conclusion At present the quality of recombinant human interferon αlb injection is generally good.The current standards are feasible,but the specified standard of osmolality needs to be improved.

The noninvasive measurement of liver stiffness (LS) was evaluated by transient elastography (FibroScan) and the possible influencing factors from the patients' clinical situations including age, gender, liver inflammation represented by alanine transaminase (ALT) and total billirubin (TBIL) level, HBV replication (HBV DNA loads), portal vein pressure (portal vessel diameter, PVD), splenic thickness (SPT) and body mass index (BMI) were analyzed in patients with chronic hepatitis B (CHB). A total of 466 patients including 31 patients with acute-on-chronic liver failure (ACLF), and 435 patients with chronic hepatitis B (CHB) among which 82 patients were diagnosed with liver cirrhosis (LC) by clinical manifestations and liver B-type ultrasonic inspection were enrolled at Tongji Hospital from April to December 2009. LS was measured by a FibroScan device (EchoSens, France). Simultaneously, ALT and TBIL levels, HBV DNA loads, PVD, SPT and BMI in all patients were also tested. Forty-one healthy volunteers served as controls. The values of LS were correlated positively with ages of CHB patients and significantly higher in males than in females. In patients with BMI>28 kg/m(2) (obesity) and abnormal levels of ALT and TBIL, LS values were significantly increased as compared with those having normal levels of ALT and TBIL. The patients with ACLF had the highest LS value. Furthermore, LS values in the patients with LC were significantly higher than those in patients without LC. It is concluded that noninvasive measurement of liver fibrosis by FibroScan provides an alternative method to evaluate liver fibrosis of patients with CHB. In order to properly illustrate the stiffness value taken by transient elastography, patients' gender should be taken into consideration and it is also suggested to avoid possible influencing factors including liver inflammation (high levels of ALT and TBIL) and obesity (high BMI).

After 28 foreign species of AM fungi were inoculated in sterilized soil, the effects of the AM mycorrhizal colonization and the medicine quality of Paris polyphylla var. yunnanensis were observed by combination of inoculation test in pot at room temperature and instrumental analysis. The results showed that, compared with control group (CK), the inoculation of foreign AM fungi in the soil influenced the spore density, mycorrhizal infection rate, and colonization intensity of AM fungi in root system of P. polyphylla var. yunnanensis. The inoculation of foreign AM fungi enhanced the mycorrhiza viability of P. polyphylla var. yunnanensis by increasing the activity of succinic dehydrogenase (SDH) and alkaline phosphatase (ALP) in intraradical hyphae. The content of single steroid saponin in rhizome of P. polyphylla var. yunnanensis showed variation after P. polyphylla var. yunnanensis was inoculated by different foreign species of AM fungi, which was beneficial for increasing the medicine quality; however, the kinds of steroid saponin showed no difference. In a degree, there was a selectivity of symbiosis between P. polyphylla var. yunnanensis and foreign AM fungi. And we found that the Claroideoglomus claroideum and Racocetra coralloidea were best foreign AM fungi species for cultivating P. polyphylla var. yunnanensis under field condition.
Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; analysis ; Fungi ; classification ; growth & development ; Liliaceae ; chemistry ; growth & development ; microbiology ; Mycorrhizae ; classification ; growth & development ; Plant Roots ; chemistry ; growth & development ; microbiology ; Quality Control

Objective Assisted reproductive technology ( ART) is associated with an increased incidence of offspring de-fects.The aim of this study was to investigate the impact of embryo vitrification in in vitro fertilization ( IVF) on the growth and devel-opment of the offspring by comparing the development status of mouse offspring from fresh embryo versus vitrified embryo transplanta-tion. Methods This study included three groups of mouse offspring , from natural fertilization ( n=12 ) , fresh embryo transplanta-tion (FET, n=9), and vitrified embryo transplantation (VET, n=9).We compared the body weight and body fat content in the sex-ually mature stage among the three groups of mice . Results No obvious differences were found in the morphology of the embryos be-tween the FET and VET groups .The body weight of the mouse offspring was significantly higher in the VET than in the natural control group at 0 postnatal (PN) week (P<0.01) and 12 PN weeks (P<0.01), and so was it in the FET group than in the control at 0 PN week (P<0.01) and 6 PN weeks (P<0.05).The body fat content at sexual maturity was remarkably higher in the VET than in the FET and control groups ([9.32 ±4.34] vs [5.24 ±2.56] and [2.80 ± 0.48] g, P<0.05), and so was the muscle content in the VET than in the control ([33.77 ±4.22] vs [27.50 ±1.79] g, P<0.01). Conclusion In IVF, fresh embryo transplantation has less interference with the growth and development of mouse offspring than vitri-fied embryo transplantation .

To explore the differential proteome pattern in mouse fibrosis liver in comparison to wild type. Mice were fed with carbon tetrachloride or olive oil vehicle for 15 weeks. Mouse livers from both groups were collected and submitted to MS platform for proteome screening. GO (Gene Ontology) biological process and KEGG (Kyoto Enyoolpedia of Genes and Genomes) pathway enrichment analysis were used to analyze differentially expressed proteins. As the results, we identified 17 382 and 20 486 unique peptides in control and carbon tetrachloride-induced groups, respectively. A total of 4 991 proteins (at least 1 unique peptide matched) were identified, of which 2 135 were differentially expressed (> or = 2 fold). In fibrosis mouse liver 1 264 proteins were up regulated and 871 proteins were down regulated. Proteins associated with DNA replication, cell cycle, ECM-receptor interaction, and splicesome were significantly increased in carbon tetrachloride-induced group. Proteins associated with small molecule metabolic process, protein transport, organonitrogen compound metabolic process, and tetrapyrrole biosynthetic processes were down regulated in carbon tetrachloride-induced mouse liver fibrosis tissue. Bioinformatics findings showed that fibrosis was closely related to the regulation of VEGF and T cell receptor signaling pathway, and further suggested that liver fibrosis was a complex signal transduction process that many biological processes such as liver metabolism, inflammation, and immune response are involved. Based this study, we can envision that protection of protein metabolism in liver parenchymal cells and blocking of inflammatory signaling transduction may be beneficial for liver fibrosis therapy.
Animals ; Carbon Tetrachloride ; Computational Biology ; Down-Regulation ; Inflammation ; metabolism ; Liver Cirrhosis ; chemically induced ; metabolism ; Mice ; Proteins ; metabolism ; Proteome ; metabolism ; Up-Regulation