1.Sterol extracts from Begonia Sinensis Rhizome against respiratory inflammation.
Yong YAO ; Wei JIANG ; Yu-shan LI
China Journal of Chinese Materia Medica 2015;40(16):3283-3286
The acute and chronic respiratory tract inflammation models were made to investigate the effect and mechanism of sterol extracts from Begonia Sinensis Rhizome (BSR). The first model of acute lung injury was made with Kunming mice by inhaling cigarette smoke, then the mice were treated with different concentrations of BSR sterol extracts. Lung tissue morphology was detected by HE staining, TNF-alpha/MPO were detected by Elisa, and cPLA2 protein were, detected by Western blotting respectively. Results showed that in model group, lung sheet became real, alveolar space shrank or disappeared, alveolar septum was thickened, plenty of inflammatory cells were infiltrated, capillary blood vessels were congestive and the expression of TNF-α, MPO, cPLA2 increased; after administration, a small amount of inflammatory cells were infiltrated, alveolar septum became obvious, capillary congestion status was significantly relieved and the expression of TNF-α, MPO, cPLA2 decreased (P < 0.05). The second model of chronic respiratory tract inflammation in BALB/c mice with bronchial asthma was induced by OVA, then the mice were treated with different concentrations of BSR sterol extracts. Lung tissue morphology was detected by HE staining, indexes such as IL-4, IL-5, IL-13 were detected by Elisa, and the cPLA2 protein expression was detected by Western blotting respectively. Results showed that in model group, a lot of inflammatory cells around lung vessels and bronchi exuded, bronchial goblet cells proliferated and the expression of IL-4, IL-5, IL-13, cPLA2 increased; after administration, inflammatory and goblet cell hyperplasia reduced, the expression of IL-4, IL-5, IL-13, cPLA2 also decreased (P < 0.05). The above results showed BSR sterol extracts could resist against respiratory inflammation by inhibiting cPLA2 in a dose-dependent manner.
Animals
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Asthma
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drug therapy
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genetics
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immunology
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Begoniaceae
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chemistry
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Cytokines
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genetics
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immunology
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Disease Models, Animal
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Drugs, Chinese Herbal
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administration & dosage
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Female
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Humans
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Interleukin-13
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genetics
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immunology
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Interleukin-4
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genetics
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immunology
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Interleukin-5
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genetics
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immunology
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Lung
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immunology
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Male
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Mice
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Mice, Inbred BALB C
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Rhizome
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chemistry
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Sterols
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administration & dosage
4.Inhibition of Bcl-2 Antisense Oligonucleotide Combined with Radiation against Lung Carcinoma Cells
Wei HU ; Guoping SHAN ; Changhui YU
Journal of Zhejiang Chinese Medical University 2007;0(01):-
[Objective] To study the inhibitory effect of bcl-2 antisense oligonucleotide(ASODN)combined with radiation on lung carcinoma cells NCI-H446.[Method]The cultured NCI-H446 lung carcinoma cells were divided into 5 groups:control,pure radiation,nonsense+radiation,lipofectin+radiation,ASODN+radiation.Every group except for control were assayed by MTT on the inhibition rates,24h,48h,72h after 10Gy irradiation respectively.[Results]The inhibitions of lung carcinoma cells NCI-H446 were observed in ASODN+radiation,lipofectin+radiation,nonsense+radiation and pure radiation groups.The differences between the ASODN+radiation group and the other three groups were significant(P
5.Isolation and Identification of Marine Actinomycetes with Quorum Sensing Inhibitory Activity
Wei-Shan WANG ; Shan-Shan ZOU ; Shou-Liang YIN ; Qian-Hong GONG ; Wen-Gong YU ;
Microbiology 2008;0(09):-
Quorum sensing systems of pathogens are central regulators for the expression of virulence factors. Increasing evidence implies that targeting the quorum sensing system of many pathogenic bacteria is a promising therapeutic approach to control infections. In this work,we isolated 47 strains of actinomycetes from the mud sample of Jiaozhou Bay. Quorum sensing inhibitory activity was monitored by Chromobacterium violaceum CV026. As a result,the culture broth extract of actinomycetes WA-7 was found to have significant quorum sensing inhibitory activity. This strain was assigned to the genus Streptomyces based on its 16S rDNA sequence. Further investigation revealed that the extract could inhibit the quorum sensing-controlled violacein and proteases production of C. violaceum in a concentration-dependent manner.
7.HPLC specific chromatograms of drug pair of schizonepetae herba and saposhnikoviae radix.
Li-Xia YU ; Ming-Qiu SHAN ; An-Wei DING
China Journal of Chinese Materia Medica 2014;39(4):679-683
In this experiment, the HPLC specific chromatogram was adopted, with Agilent Extend-C18 (4.6 mm x 250 mm, 5 microm) as the chromatographic column, and 0.5 per thousand trifluoroacetic acid and acetonitrile as the mobile phase for gradient elution, so as to establish specific chromatograms for drug pair of Schizonepetae Herba and Saposhnikoviae Radix from different producing area, identify 12 common characteristic peaks, and obtain the comparison specific chromatography of drug pair of Schizonepetae Herba and Saposhnikoviae Radix. The method is simple, accurate and highly reproducible, and thus can be used as the basis for the quality control of the drug pair.
Apiaceae
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chemistry
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Chromatography, High Pressure Liquid
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methods
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Drugs, Chinese Herbal
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analysis
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Lamiaceae
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chemistry
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Quality Control
8.Median effective concentration of ropivacaine for ultrasound-guided brachial plexus block
Chentao GU ; Aizhong WANG ; Yu SHAN ; Wei JIANG
Chinese Journal of Anesthesiology 2011;31(2):217-219
Objective To determine the median effective concentration (EC50) of ropivacaine for ultrasound-guided brachial plexus block.Methods Fifty ASA Ⅰ or Ⅱ patients of both sexes, aged 19-72 yr, weighing 45-83 kg, scheduled for upper extremity surgery under brachial plexus block guided by ultrasound, were enrolled in this study. Brachial plexus block was performed under the guidance of ultrasound. After successful location, ropivacaine 30 ml was injected. EC50 of ropivacaine was determined by up-and-down sequential method. The initial concentration was 0.50% . Each time the concentration increased/decreased by 0.05% . EC50 of ropivacaine required for ultrasound-guided brachial plexus block and 95% confidence interval were calculated using Probit analysis.Results The EC50 of ropivacaine resulting in complete block of the brachial plexus nerve was 0.436%(95% confidence interval 0.393%-0.477% ). Conclusion The EC50 of ropivacaine is 0.436% for ultrasoundguided brachial plexus block.
10.Cultivation of Students' Comprehensive Abilities in Independence Experiment and Practice
Tong-Wei YAO ; Lu-Shan YU ; Hui-Di JIANG ;
Chinese Journal of Medical Education Research 2006;0(10):-
This article introduces the independent experiment and social investigation activities in the course of medication analy- sis set up for strengthening students' comprehensive abilities.These activities create a good study atmosphere for enhancing stu- dents' ability to do research and their humanistic qualities.