Cells, Cultured ; Enzyme-Linked Immunosorbent Assay ; Female ; Fetal Blood ; Humans ; Infant, Newborn ; Lipopolysaccharides ; Lymphocytes ; metabolism ; Male ; RNA, Messenger ; metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Suppressor of Cytokine Signaling 1 Protein ; Suppressor of Cytokine Signaling 3 Protein ; Suppressor of Cytokine Signaling Proteins ; genetics ; metabolism ; Time Factors ; Toll-Like Receptor 2 ; genetics ; metabolism ; Toll-Like Receptor 4 ; genetics ; metabolism ; Tumor Necrosis Factor-alpha ; metabolism

Catalytic activity of activated carbon supported tungstosilicic acidin synthesizing 2-methyl-2-ethoxycarbonylmethyl1,3-dioxolane, 2,4-dimethyl-2-ethoxycarbonylmethyl-l,3-dioxolane, cyclohexanone ethylene ketal, cyclohexanone 1,2-propanediol ketal, butanone ethylene ketal, butanone 1,2-propanediol ketal, 2-phenyl-1,3-dioxolane, 4-methyl-2-phenyl-1,3-dioxolane,2-propyl-1,3-dioxolane, 4-methyl-2-propyl-1,3-dioxolane was reported. It has been demonstrated that activated carbon supported tungstosilicic acid is an excellent catalyst. Various factors involved in these reactions were investigated. The optimum conditions found were: molar ratio of aldehyde/ketone to glycol is 1/1.5, mass ratio of the catalyst used to the reactants is 1.0%, and reaction time is 1.0 h. Under these conditions, the yield of 2-methyl-2-ethoxycarbonylmethyl-l,3-dioxolane is 61.5%, of 2,4-dimethyl2-ethoxycarbonylmethyl-1,3-dioxolane is 69.1%, of cyclohexanone ethylene ketal is 74.6%, of cyclohexanone 1,2-propanediol ketal is 80.1%, of butanone ethylene ketal is 69.5%, of butanone 1,2-propanediol ketal is 78.5%, of 2-phenyl-1,3-dioxolane is 56.7%, of 4-methyl-2-phenyl- 1,3-dioxolane is 86.2%, of 2-propyl-1,3-dioxolane is 87.5%, of 4-methyl-2-propyl-1,3-dioxolane is 87.9%.

This study aimed to analyze the etiology of the encephalitis outbreak in Longyan, Fujian Province, China in 2010, in order to provide valuable information for this prevention and control of this disease. Pathogens were confirmed from cerebrospinal fluid samples with fluorescent RT-PCR, virus isolation (RD cells), and neutralization tests. Then, the VP1 fragments or whole genome nucleotide sequences were determined for four virus strains using PCR. Homology was assessed using the MegAlign software, and a phylogenetic evolutionary tree was drawn using Mega 4.0 software. The results confirmed that the etiology of the outbreak was the ECHO6 intestinal virus, and the nucleotide sequence of the VP1 segment indicated that the C2 subtype was responsible. The genome sequence consisted of 7407 nucleotides, and resembled the genome of other ECHO and CoxB viruses with homology levels of 78.5%-87.3%. The encephalitis outbreak in Longyan in 2010 was caused by the ECHO6 C2 subtype intestinal virus, and its complete genome sequence length is similar to the standard strain (U16283) with a sequence homology of 80.4%.
Child, Preschool ; China ; epidemiology ; Disease Outbreaks ; Echovirus 6, Human ; classification ; genetics ; isolation & purification ; Echovirus Infections ; epidemiology ; virology ; Encephalitis ; epidemiology ; virology ; Female ; Humans ; Infant ; Male ; Molecular Sequence Data ; Phylogeny

Acetylcysteine ; pharmacology ; Animals ; Cell Line ; Gene Expression ; Lipopolysaccharides ; pharmacology ; Macrophages ; drug effects ; Mice ; Toll-Like Receptor 2 ; genetics ; Toll-Like Receptor 4 ; genetics

Catalytic activity of activated carbon supported tungstosilicic acid in synthesizing 2-methyl-2-ethoxycarbonylmethyl- 1,3-dioxolane, 2,4-dimethyl-2-ethoxycarbonylmethyl-1,3-dioxolane, cyclohexanone ethylene ketal, cyclohexanone 1,2-propa- nediol ketal, butanone ethylene ketal, butanone 1,2-propanediol ketal, 2-phenyl-1,3-dioxolane, 4-methyl-2-phenyl-1,3-dioxolane, 2-propyl-1,3-dioxolane, 4-methyl-2-propyl-1,3-dioxolane was reported. It has been demonstrated that activated carbon supported tungstosilicic acid is an excellent catalyst. Various factors involved in these reactions were investigated. The optimum conditions found were: molar ratio of aldehyde/ketone to glycol is 1/1.5, mass ratio of the catalyst used to the reactants is 1.0%, and reaction time is 1.0 h. Under these conditions, the yield of 2-methyl-2-ethoxycarbonylmethyl-1,3-dioxolane is 61.5%, of 2,4-dimethyl- 2-ethoxycarbonylmethyl-1,3-dioxolane is 69.1%, of cyclohexanone ethylene ketal is 74.6%, of cyclohexanone 1,2-propanediol ketal is 80.1%, of butanone ethylene ketal is 69.5%, of butanone 1,2-propanediol ketal is 78.5%, of 2-phenyl-1,3-dioxolane is 56.7%, of 4-methyl-2-phenyl-1,3-dioxolane is 86.2%, of 2-propyl-1,3-dioxolane is 87.5%, of 4-methyl-2-propyl-1,3-dioxolane is 87.9%.

OBJECTIVETo indicate the deficiency of the classical method for analyzing data on individual matching case-control study in consideration of the interaction between the study factor (exposure) and the matching factor, and to find out a proper method for handling this deficiency.

METHODFirst, experimental data with 50 pairs of cases and controls were used for strata analysis according to the values of a matching factor to illustrate the possible interaction between a risk factor (exposure) and the matching factor. Second, a detailed procedure was proposed for analyzing such data.

RESULTSInteraction between the study factor and matching factor was demonstrated by using strata analysis and unconditional logistic regression analysis. Therefore the results from the classical analysis for such data might be incorrect.

CONCLUSIONData from individual matching case-control study design should be dealt with strata analysis or multivariate analysis to explore and evaluate the possible interaction between the study factor and matching factor. The conclusion would be valid only after such analysis is conducted.

Case-Control Studies ; Confounding Factors (Epidemiology) ; Matched-Pair Analysis ; Outcome Assessment (Health Care) ; Regression Analysis ; Risk Factors

Objective To assess the methodology and quality on Meta-analysis used in papers being published in the Chinese Journal of Epidemiology.Methods Computerized literature searching was carried out in Wanfang Medical Online to collect articles that Meta-analysis was used in the Chinese Journal of Epidemiology since it was founded till December,2012.Manual retrieval was also conducted.Two researchers independently screened for literature and extracted data.Disagreements were resolved through discussion or by resort to a third reviewer if consensus was not reached.Qualities on methodologies or on the processes of reporting and reviewing,were evaluated by both AMSTAR and PRISMA scales.Statistical calculations and analyses were performed using SPSS 13.0.Results Fifty-five papers on meta-analyses were included in this study.Results on the qualities of methodology or evaluation showed that only 2 articles (3.6％) were rated as high,35 articles (63.7％) as moderate and 18 (32.7％) as low.The quality on methodology being used in literature had improved since 2008.However,there were still some problems seen in the following areas as the list of studies (included and excluded),comprehensive search on literature,quality of the included studies having been assessed and documented,etc.Results on evaluation of quality showed that the included reviews had high quality on the titles of the report,sources of information,summary measures and synthesis of results.However,areas as:structured summary,methods on searching,data collection,risk of bias in individual studies,summary of evidence,limitations,funding etc.,were still lack of comprehensive reports.Conclusion Articles on Meta-analysis published in the Chinese Journal of Epidemiology provided substantial evidence for more reliable information on the etiology and risk factors of the studies.However,both of the qualities on methodology and reports in the included literature presented problems at different levels that called for careful improvement.

OBJECTIVETo evaluate the value of X-ray and spiral computed tomography (SCT) in the diagnosis of Swyer-James syndrome (SJS).

METHODSA total of 28 patients, 12 males and 16 females, were studied retrospectively. Ages ranged from 11 to 57 years, the mean age was 32 years. All patients underwent inspiratory chest X-ray films, 5 with expiratory chest films and 1 with bronchogram. Furthermore, inspiratory and expiratory SCT scans were performed. The SCT findings were analyzed and compared with X-ray films.

RESULTSSCT demonstrated 56 lobes with hyperlucency and diminished vascularity. The size of 51 lobes were smaller and 5 were normal. X-ray films showed that hyperlucency was only in 29 lobes, in which 19 lobes were small-sized and the other 10 lobes normal. There were 56 lobes with air-trapping on expiratory SCT scans, but only 5 lobes with air-trapping on expiratory X-ray films. Bronchogram in 1 case demonstrated bronchiectasis and bronchiolitis obliterans. SCT showed 24 patients with bronchiectasis, 9 patients with tuberculosis, 10 patients with bronchiolitis, and 2 with segmental collapse.

CONCLUSIONSCT scan is superior to chest radiography in the diagnosis and differential diagnosis of SJS.

Adolescent ; Adult ; Bronchiectasis ; complications ; diagnostic imaging ; Bronchiolitis ; complications ; diagnostic imaging ; Child ; Diagnosis, Differential ; Female ; Humans ; Lung, Hyperlucent ; complications ; diagnostic imaging ; Male ; Middle Aged ; Radiography, Thoracic ; Retrospective Studies ; Tomography, Spiral Computed ; methods ; Tuberculosis, Pulmonary ; complications ; diagnostic imaging

OBJECTIVETo evaluate the effect of the early use of recombinant human erythropoietin (rhu-EPO) on neurobehavioral development in preterm infants.

METHODSForty-four preterm infants (30 males and 14 females) were randomly divided into two groups: Rhu-EPO treatment and untreated control (n=22 each). From postnatal day 7, the Rhu-EPO treatment group received intravenous rhu-EPO (250 IU/kg3 times weekly) for 4 weeks. A Neonatal Behavioral Neurological Assessment (NBNA) was performed at 40 weeks of corrected gestational age. A Gesell Development Schedule was used to evaluate neurological development 6 and 12 months after birth.

RESULTSThe NBNA score in the rhu-EPO treatment group (36.20+/-0.75) was significantly higher than that in the control group (34.40+/-1.05) at 40 weeks of corrected gestational age (P<0.05). The developmental quotient of fine motor in the rhu-EPO treatment group was significantly higher than that in the control group 6 months after birth (P<0.05). By 12 months after birth, the developmental quotient of gross motor, fine motor and language in the rhu-EPO treatment group was significantly higher than that in the control group (P<0.05).

CONCLUSIONSEarly use of Rhu-EPO can promote neurobehavioral development in preterm infants.

Anemia ; prevention & control ; Brain ; drug effects ; physiology ; Child Development ; drug effects ; Erythropoietin ; therapeutic use ; Female ; Humans ; Infant Behavior ; drug effects ; Infant, Newborn ; Infant, Premature ; growth & development ; Infant, Premature, Diseases ; prevention & control ; Male ; Recombinant Proteins

Antineoplastic Agents, Phytogenic ; pharmacology ; Apoptosis ; drug effects ; Carcinoma, Hepatocellular ; metabolism ; Cell Line, Tumor ; Cyclooxygenase 2 ; metabolism ; Humans ; Oleanolic Acid ; analogs & derivatives ; pharmacology ; Saponins ; pharmacology