2.Detection of Avian Influenza Virus in Environmental Samples Collected from Live Poultry Markets in China during 2009-2013.
Ye ZHANG ; Xiaodan LI ; Shumei ZOU ; Hong BO ; Libo DONG ; Rongbao GAO ; Dayan WANG ; Yuelong SHU
Chinese Journal of Virology 2015;31(6):615-619
Abstract: To investigate the distribution of avian influenza virus in environmental samples from live poultry markets (LPM) in China, samples were collected and tested by nucleic acid during 2009-2013 season. Each sample was tested by real-time RT PCR using flu A specific primers. If any real-time PCR was positive, the sample was inoculated into specific-pathogen-free (SPF) embryonated chicken eggs for viral isolation. The results indicated that the positive rate of nucleic acid in enviromental samples exhibited seasonality. The positive rate of nucleic acid was significantly higher in Winter and Spring. The positive rate of nucleic acid in LPM located in the south of China was higher than in northern China. Samples of Sewage for cleaning poultry and chopping board showed that higher positive rate of nucleic acid than other samples. The Subtype identification showed that H5 and H9 were main subtypes in the enviromental samples. Viral isolation indicated H5 subtypes was more than H9 subtypes between 2009 and 2013 while H9 subtypes increased in 2013. Our findings suggested the significance of public health based on LPM surveillance and provided the basis of prevention and early warning for avian flu infection human.
Animals
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China
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Feces
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virology
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Fresh Water
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virology
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Influenza A virus
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classification
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genetics
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isolation & purification
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Influenza in Birds
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virology
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Poultry
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Poultry Diseases
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virology
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Public Health
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Seasons
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Sewage
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virology
3.Quantitative assessment of the virucidal activities of three commercial disinfectants against human in-fected highly pathogenic avian influenza viruses subtype H5
Jie DONG ; Hong BO ; Libo DONG ; Ye ZHANG ; Dayan WANG ; Yuelong SHU
Chinese Journal of Microbiology and Immunology 2016;36(6):463-467
Objective To quantitatively assess the virucidal activities of three commercial disin-fectants against human infected highly pathogenic avian influenza viruses subtype H5. Methods The 50%tissue culture infective dose ( TCID50 ) of avian influenza viruses was calculated. Quantitative suspension test was performed to evaluate the efficacy of three disinfectants. In that test, 105 TCID50 of avian influenza viru-ses were exposed to different disinfectants at different concentrations for different times with or without the in-terference with fetal bovine serum ( FBS) simulating the contaminated condition. The residual infectivity was determined by endpoint titration in Madin-Darby canine kidney ( MDCK) cells. The detail steps were that the mixture of viruses and disinfectants was inoculated at 37℃ with 5% CO2 for 1 hour. Then, it was re-placed by virus dilution medium and further incubated for 18 to 20 hours. ELISA was performed for the cal-culation of TCID50 . The titers of residual viruses were calculated according to Reed and Muench method. The low pathogenic avian influenza virus H9N2 was chosen as the control in this study. Results The re-mained infectivities of three viruses after 1 minute exposure to 1% Virkon solution were below the limit of de-tection (1. 0 lgTCID50/100 μl). Exposing to 0. 5% Virkon solution decreased the viral titers of H5N1 and H9N2 viruses below the detection limit and reduced the titer of H5N6 virus to 1. 75 lgTCID50/100 μl. The virucidal efficacy of 0. 25% Virkon solution against some of the detected viruses was achieved by increasing the exposure time to 5 minutes. The 84 Disinfectant solutions at concentrations of 10%, 5% and 2. 5% low-ered the viral titers of three viruses below the detection limit of 1. 0 lgTCID50/100 μl, but the 1. 25% 84 Disinfectant solution only lowered the viral titers to 1. 25-2. 5 lgTCID50/100 μl. The similar results were ob-served in groups treated with SOLARSEPT solutions. 1% 84 Disinfectant solution didn′t show any virucidal activity against the three viruses after 1 minute of exposure even when the exposure time was extended to 5 minutes. Under the contaminated condition, 1% Virkon solution, 10% and 5% 84 Disinfectant solutions as well as 100% and 50% SOLARSEPT solutions lowered the viral titers below 1. 0 lgTCID50/100μl. Conclu-sion The three commercial disinfectants (1% Virkon solution, 10% 84 Disinfectant solution and SOLAR-SEPT solution) were efficient virucides for highly pathogenic avian influenza viruses subtype H5 even under the contaminated condition. Increasing the exposure time had no significant effects on the efficacy of three disinfectants after the virucidal activities were neutralized by enough viruses. No significant differences in vi-rucidal activities of three disinfectants against HPAI H5 viruses and LPAI H9 virus were observed.
4.Changes of Soluble Tumor Necrosis Factor-? Receptor Type 1 in Cerebrospinal Fluid of Children with Virus Encephalitis and Its Clinical Significance
hong-yan, CHEN ; qiu-ye, ZHANG ; zhi-rong, SHU ; yu-zong, NIU ; wen-di, WANG
Journal of Applied Clinical Pediatrics 2004;0(12):-
Objective To explore the changes of soluble tumor necrosis factor receptor type 1(sTNFR1)in children with acute virus encephalitis(VE)and its clinical significance.Methods The levels of tumor necrosis factor-?(TNF-?),sTNFR1 and neuron specific enolase(NSE)in cerebrospinal fluid were determined by enzyme-linked immunosorbent assay(ELISA)in 55 children who were admitted with VE,including 25 cases with severe VE(SVE)and 30 cases with mild VE(MVE).Fifteen cases without VE were as control group.Results The levels of TNF-?,sTNFR1 in cerebrospinal fluid in encephalitis children were significantly higher than that in control group(Pa
5."Re-evaluation upon suspected event" is an approach for post-marketing clinical study: lessons from adverse drug events related to Bupleuri Radix preparations.
Shu-Xin WU ; Hong-Feng SUN ; Xiao-Hui YANG ; Hong-Zhu LONG ; Zu-Guang YE ; Shao-Liang JI ; Li ZHANG
China Journal of Chinese Materia Medica 2014;39(15):2983-2988
We revisited the "Xiao Chaihu Decoction event (XCHDE)" occurred in late 1980s in Japan and the Bupleuri Radix related adverse drug reaction (ADR) reports in China After careful review, comparison, analysis and evaluation, we think the interstitial pneumonitis, drug induced Liver injury (DILI) and other severe adverse drug envents (ADEs) including death happened in Japan is probably results from multiple factors, including combinatory use of XCHDE with interferon, Kampo usage under modern medicine theory guidance, and use of XCHD on the basis of disease diagnosis instead of traditional Chinese syndrome complex differentiation. There are less ADE case reports related to XCHD preparation in China compared to Japan, mostly manifest with hypersensitivity responses of skin and perfuse perspiration. The symptoms of Radix Bupleuri injection related ADEs mainly manifest hypersensitivity-like response, 2 cases of intravenous infusion instead of intramuscular injection developed hypokalemia and renal failure. One case died from severe hypersensitivity shock. In Chinese literatures, there is no report of the interstitial pneumonitis and DILI associated with XCHDG in Japan. So far, there is no voluntary monitoring data and large sample clinical research data available. The author elaborated the classification of "reevaluation" and clarified "re-evaluation upon events" included the reaction to the suspected safety and efficacy events. Based on the current status of the clinical research on the Radix Bupleuri preparations, the author points out that post-marketing "re-evaluation upon suspected event" is not only a necessity of continuous evaluation of the safety, efficacy of drugs, it is also a necessity for providing objective clinical research data to share with the international and domestic drug administrations in the risk-benefit evaluation. It is also the unavoidable pathway to culture and push the excellent species and famous brands of TCM to the international market, in that it enhances the pharmaceutical manufactures the ability to control enterprise risk and eliminate the negative impact on traditional Chinese medicine. With the widely used and ADR report concentrated Radix Bupleuri injection as an example, the author provide a new approach to post-marketing clinical research.
Bupleurum
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chemistry
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Drug Compounding
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Drug-Related Side Effects and Adverse Reactions
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etiology
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Drugs, Chinese Herbal
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adverse effects
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Humans
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Product Surveillance, Postmarketing
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methods
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Safety
6.Case-control study on three spinal rotation manipulations for the treatment of lumbar disc herniation.
Hong-gen DU ; Hui WEI ; Zhong JIANG ; Huan-ming WANG ; Shu-liang YE ; Hong-quan SONG ; Xi-tao NING
China Journal of Orthopaedics and Traumatology 2016;29(5):444-448
OBJECTIVETo evaluate the efficacy and safety of three different spinal rotation manipulations for the treatment of lumbar disc herniation.
METHODSFrom September 2011 to April 2013,180 patients diagnosed as lumbar disc herniation were randomly divided into seat fixed rotation group (A), lateral position rotation group (B) and supine position rotation group (C) by using a digital table. Finally 10 patients were excluded and dropped, 170 patients were included in the study. There were 57 patients in group A, 57 patients in group B and 56 patients in group C. Baseline demographic characteristics of patients, clinical findings and indexes of health status had no statistically differences among three groups (P > 0.05). The manipulation was performed every other day, and the treatment duration for all patients was 3 weeks. Body pain (BP), Physical function (PF) in SF-36, Oswestry Disability Index (ODI) and adverse reactions were observed statistically 6 weeks, 3 months, 6 months, one year and two years after finishing treatment.
RESULTSBP, PF scores in 3 groups were significantly improved and ODI scores were significantly lower than those before treatment and the differences were statistically significant (P < 0.05); However, there was no significant difference among three groups in the BP, PF and ODI scores (P > 0.05). There were no obvious and serious adverse reactions among these groups.
CONCLUSIONBased on the theory of dislocation of bone joints in TCM, three kinds of spinal rotation manipulations can be used safely for the treatment of lumbar disc herniation, and the efficacy was similar.
Adolescent ; Adult ; Case-Control Studies ; Female ; Humans ; Intervertebral Disc Displacement ; physiopathology ; therapy ; Male ; Manipulation, Spinal ; methods ; Middle Aged ; Rotation ; Treatment Outcome ; Young Adult
8.Investigation of allergens in 3,504 children with allergic diseases.
Ye SHU ; Jian-Ping TANG ; Dan ZHANG ; Ying-Hong ZENG ; Bin ZHOU
Chinese Journal of Contemporary Pediatrics 2010;12(9):720-722
OBJECTIVETo investigate the allergens of various allergic diseases in children.
METHODSSerum levels of Fx5E, Phadiatop and specific IgE were measured by the UniCAP100 System in 3 504 children with allergic diseases.
RESULTSThe positive rate of aeroallergens was obviously higher than that of food allergens in children with allergic rhinitis, allergic conjunctivitis, asthma and papular urticaria. In contrast, the positive rate of food allergens was obviously higher than that of aeroallergens in children with Henoch-Schonlein purpura and digestive diseases. The serum specific IgE level of aeroallergens was higher than that of food allergens. The dust and mite specific IgE levels reached to grade 6, while the food allergen specific IgE levels were lower than grade 3.
CONCLUSIONSAaeroallergens or food allergens vary remarkably in different allergic diseases in children. The level of specific IgE of aeroallergens is higher than that of food allergens.
Adolescent ; Allergens ; immunology ; Child ; Child, Preschool ; Female ; Humans ; Hypersensitivity ; immunology ; Immunoglobulin E ; blood ; Infant ; Male
9.A novel trichostatin analogue culture of Streptomyces sp. CPCC 203909.
Ming-hua CHEN ; Ye-xiang WU ; Yan-ni XU ; Li-yan YU ; Bin HONG ; Wei JIANG ; Shu-yi SI
China Journal of Chinese Materia Medica 2015;40(9):1751-1754
By using a cell-based high throughput screening model for the CLA-1 up-regulator, Streptomyces 203909 was found to produce up-regulator of CLA-1. A novel trichostatin analogue was isolated from the rice fermentation of Streptomyces sp. CPCC 203909by a combination of various chromatographic techniques including column chromatography (CC) over silica gel, flash C18 CC, and reversed-phase HPLC. Its structure was identified as (-)-(R,2E,4Z)-7-[(4'-dimethylamino) phenyl]-4,6-dimethyl-7-oxohepta-2,4-dienoyl-L-glutamine (1) by the spectroscopic and chemical methods, and combination with the CD spectroscopy and Marfey's method. In the prelimi- nary assays, Compound 1 showed cytotoxicity against human embryonic kidney 293 cell line with IC50 value 35.3 [µmol · L(-1).
Cell Survival
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drug effects
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Fermentation
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Hep G2 Cells
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Humans
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Hydroxamic Acids
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chemistry
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isolation & purification
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metabolism
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pharmacology
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Molecular Structure
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Streptomyces
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chemistry
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metabolism
10.Histopathologic characteristics of intestinal metaplasia in gastric mucosa of children.
Gui-ping CHEN ; Hong-feng TANG ; Wei-zhong GU ; Hua-ying YE ; Long LIN ; Yan SHU ; Yun ZHAO
Chinese Journal of Pathology 2006;35(3):171-172
Adolescent
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Child
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Child, Preschool
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Female
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Gastric Mucosa
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pathology
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Gastritis
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pathology
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Humans
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Male
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Metaplasia
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Retrospective Studies