1.Comparison of the cytotoxicity in vitro among six types of nano-silver base inorganic antibacterial agents.
Fu-qiang ZHANG ; Wen-jun SHE ; Yuan-fei FU
Chinese Journal of Stomatology 2005;40(6):504-507
OBJECTIVETo evaluate the biocompatibility of nano-silver base inorganic antibacterial agents and compare the cytotoxicity in vitro among six types of nano-silver base inorganic antibacterial agents.
METHODSFUMAT T200-4, HN300, Novaron, Kangwang, MOD and SR1000 were diluted to different concentrations, such as 100 g/L, 50 g/L, 25 g/L and 12.5 g/L. The cytotoxicity in vitro of these agents on rat's fibroblast was assayed with MTT method. And the grades of cytotoxicity were compared.
RESULTSHigh concentrations of nano-silver base inorganic antibacterial agents had cytotoxic effects on rat's fibroblasts L-929. As the concentration decreased, the cytotoxicity decreased. No cytotoxic effects were observed at or below the concentration of 25 g/L. FUMAT T200-4, Kongwang and SR1000, with the carrier of phosphate zirconium, had less cytotoxity than the others.
CONCLUSIONSNano-Silver base inorganic antibacterial agents, such as FUMAT T200-4, Kangwang, SR1000, have good biocompatibility. And they have the possibility of clinical application. The safe concentration of these agents is at or below 25 g/L.
Animals ; Anti-Bacterial Agents ; administration & dosage ; toxicity ; Cell Line ; Dose-Response Relationship, Drug ; Drug Evaluation, Preclinical ; Fibroblasts ; drug effects ; Nanostructures ; administration & dosage ; toxicity ; Rats ; Silver Compounds ; administration & dosage ; classification ; toxicity
2.Prevalence of HIV infection and sexual behaviors with both men and women among currently married men who have sex with men
Zhen CAO ; Hong-Bo ZHANG ; Min SHE ; Jun WANG ; Juan XU ; Yu-Wen DUAN ; Dan-Dan SONG ; Min WANG ; Zhen-Xin DONG
Chinese Journal of Epidemiology 2012;33(5):488-491
Objective To find out the status of HIV infection,sexual behaviors with both men and women as well as condom use among currently married men who have sex with men (MSM) so as to document for HIV intervention targeting this sub-population,in Beijing,Chengdu,Harbin and Zhengzhou cities.Methods “Snowballing” sampling method was used to recruit subjects in four cities.Participants were investigated by anonymous questionnaire containing demographics,sexual orientation,both homosexual and heterosexual behaviors and condom use during the past 6 months.Blood samples from participants were used to test HIV antibodies.Results Of the 858 participants for four cities,the average age was 38.3 (SD=9.1) years.36.7% of them had completed the junior high school or under.The percentage of participants who identified themselves as homosexual,bisexual,and heterosexual or undecided were 40.9%,54.3% and 4.8%,respectively.The overall HIV prevalence was 8.0%,and among four cities the HIV prevalence in Chengdu was the highest ( 13.3% ).Results from the Multiple logistic regression analysis showed that never used condoms when having anal sex with men during the past 6 months among participants who did not have a city residential card,identifying himself as having homosexual orientation,living in Harbin,having first anal sex experience before 18 years of age the range of OR value was 1.5-2.1.In addition,the faetors associated with never using condoms in vaginal sex with women during the past 6 months were as follows:being over 46 years old,not having a city residential card,living in Beijing,identifying himself as heterosexual orientated or with unknown sexual orientation,never using condoms in anal sex with men during the past 6 months,the range of OR value was 1.7-5.9.Conclusion The prevalence of HIV infection seemed to be quite high among those currently married MSM.High rates of unprotected homosexual and heterosexual behaviors might accelerate the spreading of HIV from currently married MSM to their wives.
3.A Novel Gene Mutation of Runx2 in Cleidocranial Dysplasia
PENG YOU-JIAN ; CHEN QIAO-YUN ; FU DONG-JIE ; LIU ZHI-MING ; MAO TIAN-TIAN ; LI JUN ; SHE WEN-TING
Journal of Huazhong University of Science and Technology (Medical Sciences) 2017;37(5):772-776
Haploinsuffieiency of the runt-related transcription factor 2 (Runx2) gene is widely known to be responsible for cleidocranial dysplasia (CCD).To date,more than 190 mutations in Runx2 gene have been reported to be related to CCD.In this study,a novel mutation of Runx2 gene was observed in a female with CCD.Genomic DNA was extracted from peripheral venous blood of the proband and eleven members of her family.Genetic testing on these twelve people identified a novel missense mutation (c.895T>C,Y299H) in exon 5 of the RUNX2 gene in the proband.This mutation results in an amino acid change at codon 895 (P.Tyr 299 His.) from a tryptophan codon (TAT) to a histidine codon (CAT).Our finding may further extend the known mutation spectrum of the RUNX2 gene,and facilitate prenatal genetic diagnosis of CCD in the future.
4.Investigation of HIV and syphilis infection status and risk sexual behavior among men who have sex with men in four cities of China.
Min SHE ; Hong-bo ZHANG ; Jun WANG ; Juan XU ; Yu-wen DUAN ; Dan-dan SONG ; Min WANG ; Zheng-xin DONG
Chinese Journal of Preventive Medicine 2012;46(4):324-328
OBJECTIVETo investigate HIV and treponema pallidum infection status, risky sexual behavior among men who have sex with men (MSM) and its impact factors in China.
METHODSSnowball sampling was used to recruit subjects from April to August in 2008 in Beijing, Harbin, Zhengzhou and Chengdu city. Serological test of HIV and treponema pallidum were conducted and a questionnaire survey was undertaken among subjects. The questionnaire included social demographics, characteristics of sexual partners and sexual behaviors.
RESULTSA total of 1693 subjects was enrolled in present study, which included 1390 MSM/M (82.1%) and 303 MSMW (17.9%). The infection rate of HIV among MSM/M and MSMW subjects were 7.0% (97/1390) and 6.6% (20/303), respectively. The infection rate of treponema pallidum among MSM/M and MSMW subjects were 11.9% (166/1390) and 13.2% (40/303), respectively. The proportions of MSM/M subjects who never used or sometimes used condoms when having same-sex anal intercourse in recent 6 months were 8.6% (120/1390), 45.3% (630/1390), respectively. The according proportions among MSMW subjects were 10.2% (31/303), 44.6% (135/303), respectively. Among MSM/M subjects, the risk factors of risk sexual behaviors included having less than 6 sexual partners (OR = 6.03, 95%CI: 2.54 - 14.28), no same-sex regular sexual partner (OR = 2.18, 95%CI: 1.30 - 3.65), no same-sex casual sexual partner (OR = 2.90, 95%CI: 1.79 - 4.71), T-pattern only during anal intercourse (OR = 1.64, 95%CI: 1.13 - 2.37) or P-pattern only (OR = 1.58, 95%CI: 1.04 - 2.41). Among MSMW subjects, the risk factors of same-sex risk sexual behaviors included having less than 6 sexual partners (OR = 12.95, 95%CI: 2.38 - 70.52), no same-sex regular sexual partners (OR = 0.42, 95%CI: 0.21 - 0.85), never used condom during heterosexual intercourse (OR = 3.53, 95%CI: 1.48 - 8.42).
CONCLUSIONThe infection rate of HIV and treponema pallidum among MSM subjects were quite high, and the same-sex risk sexual behaviors among MSM subjects were ubiquity, whose risk factors including having less than six of sexual partners, no same-sex casual sexual partner, T-pattern or P-pattern only during anal intercourse and never used condemn during heterosexual intercourse among MSMW subjects no same-sex regular partner was a risk factor in MSMS population, while having same-sex regular partners was a risk factor in MSMW population.
Adolescent ; Adult ; China ; epidemiology ; HIV Infections ; epidemiology ; Homosexuality, Male ; Humans ; Logistic Models ; Male ; Risk Factors ; Risk-Taking ; Sexual Behavior ; Surveys and Questionnaires ; Syphilis ; epidemiology ; Young Adult
5.acupuncture and massage academic school with "the combination of five meridians" for post-stroke urinary incontinence.
Yun XIA ; Jun WEN ; Xiaoye LU ; Junfei SHE ; Feng ZHONG ; Wei ZHANG ; Xiaorong CHANG ; Bidan LOU
Chinese Acupuncture & Moxibustion 2017;37(1):66-68
The theory of "combination of five meridians" focuses on meridians and acupoints as well as compatibility and interrelationship of generation and restriction of five elements. By regulating corresponding meridians to diseased, the relationship of unbalancedis balanced, which can regulate body function and effectively treat diseases. Under the guide of theory "the combination of five meridians", according to etiology and pathogenesis of post-stroke urinary incontinence, wind, fire and phlegm, from three aspects of deficiency, excess and deficient root and excessive surface, under the treatment principle of "nourishing the mother if it is deficient, reducing the son if it is excessive", the original meridian, son meridian, mother meridian, conquering meridian and conquered meridian are selected while the methods of nourishing the mother, reducing the son, reinforcing the suppression and developing the weak are applied, so as to discuss the acupuncture treatment for post-stroke urinary incontinence, which can provide new clinical thoughts of acupuncture treatment for post-stroke urinary incontinence.
6.The Taxonomic Status of Spermophilus in the Plague Area of Dingbian County, Shaanxi Province, China.
Cui Hong AN ; Bao Bao CHEN ; Suo Ping FAN ; Yang Xin SUN ; Wen LYU ; Jian Jun SHE
Biomedical and Environmental Sciences 2018;31(3):238-241
This study was conducted to define the taxonomic status of Spermophilus in the plague area of Dingbian County in Shaanxi Province, China, through the two-factor variance analysis of morphological characteristics, DNA barcoding, and chromosome karyotype analysis. The Spermophilus samples collected from Dingbian and Zhengxiang Baiqi Counties exhibited significant differences in their morphological measurements. All Spermophilus samples form two distinct branches in neighbor-joining (NJ) tree. One branch included the Spermophilus samples collected from Inner Mongolia, and the other branch included samples collected from the plague foci of Shaanxi Province and the Ningxia Region. The Spermophilus samples collected from Dingbian County had a chromosome number of 2n = 38 in 84.40% of all their cells. The Spermophilus species collected from the plague area of Dingbian County was categorized as Spermophilus alashanicus (S.alashamicus). The findings reported in this study are epidemiologically significant for monitoring plague in this region of west-central China.
Animals
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China
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Cytochromes b
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analysis
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DNA Barcoding, Taxonomic
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Electron Transport Complex IV
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analysis
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Karyotype
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Plague
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microbiology
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Sciuridae
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anatomy & histology
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classification
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genetics
7.A conceived model of "physician scientist" cultivation: exploring the double degrees of MD-PhD program.
Wei-Jiang DONG ; Wen-Bin LIU ; Hui-Lin GONG ; Yan-Bin CHENG ; Ming ZHANG ; Yi LYU ; Xiao-Jian WU ; Xiao-Jun MENG ; She-Min LYU ; Li-Na CHEN ; Qian GUO ; Jin-Song ZHOU ; Hong YAN
Chinese Medical Journal 2020;133(13):1620-1622
8.Isolation and identification of endophytic fungi from Huperzia serrata and their metabolites' inhibitory activities against acetylcholinesterase and anti-inflammatory activities.
Bo-Wen QI ; Ting MO ; Xin ZHANG ; Ya-Ru YAN ; Xi-Ping XU ; Hong-Yun YANG ; Xiao-Hui WANG ; Jun LI ; She-Po SHI ; Xiao LIU
China Journal of Chinese Materia Medica 2019;44(15):3213-3220
A total of 27 endophytic fungal strains were isolated from Huperzia serrata,which were richly distributed in the stems and leaves while less distributed in roots. The 27 strains were identified by Internal Transcribed Spacer( ITS) r DNA molecular method and one of the strains belongs to Basidiomycota phylum,and other 26 stains belong to 26 species,9 general,6 families,5 orders,3 classes of Ascomycota Phylum. The dominant strains were Colletotrichum genus,belonging to Glomerellaceae family,Glomerellales order,Sordariomycetes class,Ascomycota Phylum,with the percentage of 48. 15%. The inhibitory activities of the crude extracts of 27 endophytic fungal strains against acetylcholinesterase( ACh E) and nitric oxide( NO) production were evaluated by Ellman's method and Griess method,respectively. Crude extracts of four fungi exhibited inhibitory activities against ACh E with an IC50 value of 42. 5-62. 4 mg·L~(-1),and some fungi's crude extracts were found to inhibit nitric oxide( NO) production in lipopolysaccharide( LPS)-activated RAW264. 7 macrophage cells with an IC50 value of 2. 2-51. 3 mg·L~(-1),which indicated that these fungi had potential anti-inflammatory activities.The chemical composition of the Et OAc extract of endophytic fungus HS21 was also analyzed by LCMS-IT-TOF. Seventeen compounds including six polyketides,four diphenyl ether derivatives and seven meroterpenoids were putatively identified.
Acetylcholinesterase
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Animals
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Anti-Inflammatory Agents
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isolation & purification
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pharmacology
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Ascomycota
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chemistry
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classification
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isolation & purification
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Cholinesterase Inhibitors
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isolation & purification
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metabolism
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Endophytes
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classification
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isolation & purification
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Huperzia
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microbiology
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Mice
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RAW 264.7 Cells
9.Effect of Dunhuang Pingweiwan and Its Decomposed Recipes on Tumor Inhibition and PI3K/Akt/mTOR Pathway in SCG-7901 Gastric Cancer Mice
Ya-li SHE ; Xiao-wen ZHAO ; Jun-jie LI ; Juan-juan DONG ; Yong-qi LIU ; Xi-ping LIU ; Chang-tian LI ; Ya-ling LI
Chinese Journal of Experimental Traditional Medical Formulae 2021;27(5):70-76
Objective:To investigate the antitumor effect and the mechanism of Dunhuang Pingweiwan and its decomposed recipes based on phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) signaling pathway in SCG-7901 gastric cancer-mice. Method:The subcutaneous tumor bearing model of SCG-7901 gastric cancer in mice was established, and the the mice were randomized into model group, Dunhuang Pingweiwan group (14.04 g·kg-1·d-1), Huoxue Jiedu group (6.50 g·kg-1·d-1), Wenzhong Sanhan group (3.64 g·kg-1·d-1) and cisplatin group (2 mg·kg-1·d-1), with 8 mice in each group. From the 8th day of inoculation, the mice were administered for 10 consecutive days. The mice were weighed and the general conditions were observed every other day. On the next day of the last administration, the mice were sacrificed, and the tumor was removed and weighed to calculate the anti-tumor rate. The histopathological changes were observed by hematoxylin-eosin (HE) staining, and the mRNA and protein expressions of PI3K, Akt, and mTOR in tumor tissues were detected by real-time polymerase chain reaction(Real-time PCR) and immunohistochemistry (IHC), respectively. Result:From the 10th day of inoculation, the mice in cisplatin group were generally in poor condition and their body mass decreased. The mice in model group, Dunhuang Pingweiwan group, Huoxue Jiedu group and Wenzhong Sanhan group were generally fair, and their body mass increased without significant difference among groups. The tumor inhibition rates of Dunhuang Pingweiwan, Huoxue Jiedu, Wenzhong Sanhan and cisplatin groups were 30.74%, 24.80%, 4.19% and 63.84%, respectively. Except for Wenzhong Sanhan group, tumor weight of the other treatment groups was significantly lower than that of the model group (
10.Expert Consensus on Otorhinolaryngology Head and Neck Diseases Responding Specifically to Traditional Chinese Medicine
Wei WU ; Yong-zhang SUN ; Da-xin LIU ; Jing-jing YUAN ; Sheng LIN ; Yue LIU ; Li-dong ZHAO ; Wei FENG ; Wen-yu SHE ; Lin-e WANG ; Lei LI ; Yong-gang LIU ; Ming-xia ZHANG ; Yan-jun WANG ; Lei DING ; Ling-yan JIANG ; Jin QIAO ; Man WANG ; Yong ZHU ; Zhan-feng YAN ; Xiao-xiao ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2021;27(14):208-214
Traditional Chinese medicine (TCM) and western medicine have their respective advantages and limitations in the diagnosis and treatment of common otorhinolaryngology head and neck diseases. Although the integrated TCM and western medicine exhibits definite curative effects, there is no consensus on the otorhinolaryngology head and neck diseases responding specifically to TCM or integrated TCM and western medicine, as well as the diagnosis and treatment schemes. The China Association of Chinese Medicine (CACM) thus organized the otorhinolaryngology head and neck specialists of both TCM and western medicine to discuss the etiology, pathogenesis, and clinical diagnosis and treatment methods of common otorhinolaryngology head and neck diseases with the results of multiple clinical trials taken into account. The acute pharyngitis, chronic pharyngolaryngitis, paraesthesia pharyngis, hysterical aphasia, allergic rhinitis, subjective tinnitus, and otogenic vertigo were confirmed to respond specifically to TCM or integrated TCM and western medicine. Then a mutually agreed diagnosis and treatment scheme and recommendation with integrated TCM and western medicine was formulated as a reference for clinical practice, thus benefiting more patients.