1.ANALYSIS OF THE METABOLITE OF 7-(4-CHLORBENZYL)-7,8,13,13a-TETRAHYDROBERBERINE IN RABBIT
Nianping FENG ; Zhengxing ZHANG ; Dengkui AN ; Xiuwen HAN ; Wenlong HUAN ; Guangji WANG
Acta Pharmaceutica Sinica 2001;36(2):137-139
AIM To explore the biotransformation of compound 7-(4-chlorbenzyl)-7,8,13,13a-tetrahydroberberine in the rabbit. METHODS Analyze the rabbit bile sample with HPLC, LC/MS and LC/NMR. RESULTS A metabolite and unchanged 7-(4-chlorbenzyl)-7,8,13,13a-tetrahydroberberine were found in the rabit bile, the metabolite was characterized and its structure was elucidated. CONCLUSION Compound 7-(4-chlorbenzyl)-7,8,13,13a-tetrahydroberberine is metabolized by demethylation at 10-OCH3 position.
2.The relationship between operation scores and the expression of caveolin-1 protein in the cortex of mice
Yongliang LIAN ; Ping ZOU ; Yini MA ; Xiuwen WANG ; Jiajia WANG ; Dannv HAN ; Xiaofeng LIANG ; Wei ZOU
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(10):872-874
Objective To explore the relationship between operation scores and the expression of caveolin-1 ( Cav-1 ) protein in the cortex of mice.Methods Male Kunming mice were used and divided into two groups (excellent group and bad group) according to the training scores after 4 days' Y-maze learning training.The expression of cav-1 protein in cortex and hippocampus of the mice with different scores were measured through Western blot technology.Results Cav-1 protein expression of excellent group( Cav-1/β-actin was 5.71 + 1.11 ) in the cortex was significantly higher than that of the bad group ( Cav-1/β-actin was 1.69 + 0.20) (P < 0.01 ).While there was no significant difference in the two groups in the expression of Cav-1 protein in hippocampus(P > 0.05 ).Conclusion The operation scores have distinct correlation with the expression of Cav-1 protein in the cortex of mice.
3.Establishment of transgenic receptor system and aFGF transformation in astragalus.
Dachao LI ; Yi WANG ; Shicui JIANG ; Xiuwen HAN ; Meiping ZHANG
China Journal of Chinese Materia Medica 2009;34(19):2454-2457
OBJECTIVETo establish a high-frequency regeneration system of Astragalus and an aFGF transformation system.
METHODCotyledon node of the Astragalus explants was used for organogenesis to establish a high-frequency regeneration system. GV3101 was used to transform cotyledon node, and aFGF gene was introduced into Astragalus, renewable strain was detected by PCR.
RESULTAll cotyledon node was explants, adventitious buds were induced in the medium of MS +2.0 mg x L(-1) BA +0.5 mg x L(-1) IBA, the root was taken in the medium of 1/2MS +5.0 mg x L(-1) NAA to give a high frequency regeneration system. All cotyledon node was precultured in medium for 3 days and infected with Agrobacterium (A600 0.3) for 10 min and then cocultured for 2 days. The aFGF gene was confirmed to transform into genome of Astragalus.
CONCLUSIONA high-frequency regeneration system of Astragalus and an aFGF transformation system were established.
Astragalus Plant ; genetics ; metabolism ; Fibroblast Growth Factor 1 ; genetics ; metabolism ; Gene Expression Regulation ; Genetic Engineering ; methods ; Humans ; Plants, Genetically Modified ; genetics ; metabolism ; Transformation, Genetic
4.A rudimentary study of the acid fibroblast growth factor's plant expression vector construction and transformation tobacco.
Shicui JIANG ; Yi WANG ; Xiaokun LI ; Xiuwen HAN ; Meiping ZHANG
Journal of Biomedical Engineering 2010;27(1):126-131
Acid fibroblast growth factor (aFGF) has great potential in clinical application, but it is very expensive. In order to reduce the cost of production and to make full use of the merits integrated with plant bioreator, we have explored the aFGF in transgenic Tobacco expression. AFGF gene was inserted into plant expression vector pBI121; the acquired plants contained aFGF gene expression vector pBI121-TOAB-aF. Using Agrobacterium-mediated gene transformation of Tobacco and using transgenic Tobacco containing kanamycin and cephalosporin culture medium, we obtained kanamycin resistant transgenic Tobacco plants. PCR detection, RT-PCR detection and Western blot detection confirmed that foreign genes were successfully expressed in Tobacco. These data could serve as a theoretical foundation on which to use the plant bioreactor for production of aFGF.
Agrobacterium
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genetics
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Fibroblast Growth Factor 1
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biosynthesis
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genetics
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Genetic Vectors
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genetics
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Plants, Genetically Modified
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genetics
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metabolism
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Recombinant Proteins
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biosynthesis
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genetics
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Tobacco
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genetics
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metabolism
5.Correlation of cytogenetic changes with VEGF and TRacp-5b levels among 60 elderly patients with multiple myeloma.
Ling CEN ; Yu JIANG ; Xiuwen ZHANG ; Hongying CHAO ; Rong XIAO ; Wenmin HAN ; Tao CHEN ; Xuzhang LU
Chinese Journal of Medical Genetics 2016;33(5):602-605
OBJECTIVETo assess the correlation of cytogenetic changes with serum vascular endothelial growth factor (VEGF) and serum tartrate resistant acid phosphatase (TRacp-5b) levels among elderly patients with multiple myeloma (MM).
METHODSChromosomal changes were analyzed with a modified culturing method in the presence of IL-6. Serum levels of VEGF and TRacp-5b were determined with enzyme-linked immunosorbent assays (ELISA).
RESULTSAmong the 60 MM patients, chromosomal abnormalities were found in 27 cases, including 22 with numerical abnormalities and 15 with structural abnormalities. Many patients had both numerical and structural abnormalities. For 33 patients with a normal karyotype, the levels of VEGF and TRacp-5b were 117.35 ± 55.26 pg/mL and 4.15 ± 2.15 U/L, respectively, while for 27 patients with an abnormal karyotype, the levels of VEGF and TRacp-5b were 190.26 ± 85.74 pg/ml and 5.96 ± 2.24 U/L, respectively. The difference between the two groups was significant (P<0.05).
CONCLUSIONCompared with MM patients with a normal karyotype, the levels of VEGF and TRacp-5b are higher in those with cytogenetic abnormalities.
Aged ; Aged, 80 and over ; Chromosome Aberrations ; Cytogenetic Analysis ; Female ; Humans ; In Situ Hybridization, Fluorescence ; Karyotype ; Male ; Multiple Myeloma ; blood ; diagnosis ; genetics ; Tartrate-Resistant Acid Phosphatase ; blood ; Vascular Endothelial Growth Factor A ; blood
6.Study of NK cells dysfunction in multiple myeloma patients.
Wenmin HAN ; Xiuwen ZHANG ; Zhuxia JIA ; Jinyuan HE ; Hongying CHAO ; Jianhe YANG ; Rong XIAO ; Xuzhang LU
Chinese Journal of Hematology 2015;36(11):922-925
OBJECTIVETo explore the mechanism of NK cell dysfunction in patients with multiple myeloma (MM).
METHODSThe expression of inhibitory receptors (CD158a and CD158b) and activating receptors NKG2D and NCRs (NKp30, NKp44 and NKp46) on CD3-CD56+NK cell of 13 MM patients and 30 healthy controls were analyzed by flow cytometry. The concentration of soluble NKG2D ligands (MICA, MICB, ULBP1, ULBP2 and ULBP3) in serum was detected by enzyme- linked immunosorbent assay (ELISA), and the cytotoxicity of NK cell against MM cell line by flow cytometry.
RESULTSThere are no significant differences of percentage and absolute number of NK cells, and the expression level of CD158a and CD158b between MM patients and healthy individuals (P>0.05). No NKp44 expression was detected on fresh isolated NK cells from both groups. There is no difference in inhibitor receptors expression between MM patients and healthy individuals but the expression of NKG2D, NKp30 and NKp46 on NK cells were higher in MM patients as compared with that in healthy individuals. The concentration of soluble NKG2D ligands in serum was higher in MM patients as compared with that in healthy individuals (P<0.05). Cultured healthy individual's NK cells with MM patient's serum could significantly decrease its cytotoxicity against MM cell line U266 cells [(38.5 ± 6.5) % vs (25.4 ± 5.9)%, P=0.044].
CONCLUSIONThe higher level of soluble NKG2D ligands in serum may be the mechanism of NK cell dysfunction in MM patient.
Cells, Cultured ; Flow Cytometry ; Humans ; Killer Cells, Natural ; metabolism ; pathology ; Multiple Myeloma ; immunology ; metabolism ; NK Cell Lectin-Like Receptor Subfamily K ; metabolism ; Natural Cytotoxicity Triggering Receptor 1 ; metabolism ; Natural Cytotoxicity Triggering Receptor 2 ; metabolism ; Natural Cytotoxicity Triggering Receptor 3 ; metabolism ; Receptors, KIR2DL1 ; metabolism ; Receptors, KIR2DL3 ; metabolism
7.A new quantitative 16S rRNA amplicon sequencing method.
Na HAN ; Xianhui PENG ; Tingting ZHANG ; Yujun QIANG ; Xiuwen LI ; Wen ZHANG
Chinese Journal of Biotechnology 2020;36(12):2548-2555
In recent years, 16S rRNA amplicon sequencing technology has been widely used to study human gut microbiota and to detect unknown pathogens in clinical samples. However, its resolution to bacterial population can only reach the relative abundance of genus level, and different factors affect the final bacterial profile, such as sample concentrations, PCR cycle numbers and amplification primers. In order to solve these problems, we developed a quantitative 16S rRNA amplicon sequencing method by combining random tag and internal marker method. The new methods improved the accuracy of human gut microbiota, reduced the impact of experimental operation on the results, and improved the comparability between sequencing and other molecular biological methods.
Bacteria/genetics*
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Gastrointestinal Microbiome/genetics*
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High-Throughput Nucleotide Sequencing
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Humans
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Polymerase Chain Reaction
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RNA, Ribosomal, 16S/genetics*
8. A multicenter cross-sectional study on chronic critical illness and surgery-related chronic critical illness in China
Sicheng LI ; Jie WU ; Xiangyou YU ; Suming LUO ; Jianzhong WANG ; Liang LUO ; Xisheng ZHENG ; Xiaoning HAN ; Guangyi LI ; Yingjie CHEN ; Chunting WANG ; Ling HUANG ; Qingjun ZENG ; Xiuwen WU ; Jian′an REN
Chinese Journal of Gastrointestinal Surgery 2019;22(11):1027-1033
Objective:
To understand the prevalence, diagnosis and treatment of chronic critical illness (CCI) in China.
Methods:
The clinical data of 472 adult patients admitted to ICU in 53 hospitals, including basic information, disease-related data, nutrition program, etc., were collected on May 10, 2019, by means of multi-center cross-sectional study. If surgical intervention was needed or the occurrence of the disease was directly related to the surgery, ICU patients were regarded as surgical ICU cases (
9. Investigation of treatment and analysis of prognostic risk on enterocutaneous fistula in China: a multicenter prospective study
Tao ZHENG ; Haohao XIE ; Xiuwen WU ; Qiang CHI ; Feng WANG ; Zhenhua YANG ; Chaowu CHEN ; Wei MAI ; Suming LUO ; Xiaofei SONG ; Shimin YANG ; Wei ZHOU ; Haiyan LIU ; Xinjian XU ; Zheng ZHOU ; Chuanyuan LIU ; Lian′an DING ; Kai XIE ; Gang HAN ; Hongbin LIU ; Jianzhong WANG ; Shichen WANG ; Peige WANG ; Gefei WANG ; Guosheng GU ; Jian′an REN
Chinese Journal of Gastrointestinal Surgery 2019;22(11):1041-1050
Objective:
To investigate the diagnosis and treatment for enterocutaneous fistula (ECF) in China, and to explore the prognostic factors of ECF.
Methods:
A multi-center cross-sectional study was conducted based on the Registration System of Chinese Gastrointestinal Fistula and Intra-Abdominal Infections to collect the clinical data of ECF patients from 54 medical centers in 22 provinces/municipalities from January 1, 2018 to December 31, 2018. The clinical data included patient gender, age, length of hospital stay, intensive care unit (ICU) admission, underlying diseases, primary diseases, direct causes of ECF, location and type of ECF, complications, treatment and outcomes. All medical records were carefully filled in by the attending physicians, and then re-examined by more than two specialists. The diagnosis of ECF was based on the clinical manifestations, laboratory/imaging findings and intraoperative exploration.
Results:
A total of 1521 patients with ECF were enrolled, including 1099 males and 422 females, with a median age of 55 years. The top three primary diseases of ECF were malignant tumors in 626 cases (41.2%, including 540 gastrointestinal tumors, accounting for 86.3% of malignant tumors), gastrointestinal ulcers and perforations in 202 cases (13.3%), and trauma in 157 cases (10.3%). The direct causes of ECF were mainly surgical operation in 1194 cases (78.5%), followed by trauma in 156 (10.3%), spontaneous fistula due to Crohn
10.Weak SARS-CoV-2-specific responses of TIGIT-expressing CD8 + T cells in people living with HIV after a third dose of a SARS-CoV-2 inactivated vaccine.
Junyan JIN ; Xiuwen WANG ; Yongzheng LI ; Xiaodong YANG ; Hu WANG ; Xiaoxu HAN ; Jin SUN ; Zhenglai MA ; Junyi DUAN ; Guanghui ZHANG ; Tao HUANG ; Tong ZHANG ; Hao WU ; Xin ZHANG ; Bin SU
Chinese Medical Journal 2023;136(24):2938-2947
BACKGROUND:
T-cell immunoreceptor with immunoglobulin and immunoreceptor tyrosine-based inhibition motif domains (TIGIT), an inhibitory receptor expressed on T cells, plays a dysfunctional role in antiviral infection and antitumor activity. However, it is unknown whether TIGIT expression on T cells influences the immunological effects of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) inactivated vaccines.
METHODS:
Forty-five people living with HIV (PLWH) on antiretroviral therapy (ART) for more than two years and 31 healthy controls (HCs), all received a third dose of a SARS-CoV-2 inactivated vaccine, were enrolled in this study. The amounts, activation, proportion of cell subsets, and magnitude of the SARS-CoV-2-specific immune response of TIGIT + CD4 + and TIGIT + CD8 + T cells were investigated before the third dose but 6 months after the second vaccine dose (0W), 4 weeks (4W) and 12 weeks (12W) after the third dose.
RESULTS:
Compared to that in HCs, the frequency of TIGIT + CD8 + T cells in the peripheral blood of PLWH increased at 12W after the third dose of the inactivated vaccine, and the immune activation of TIGIT + CD8 + T cells also increased. A decrease in the ratio of both T naïve (T N ) and central memory (T CM ) cells among TIGIT + CD8 + T cells and an increase in the ratio of the effector memory (T EM ) subpopulation were observed at 12W in PLWH. Interestingly, particularly at 12W, a higher proportion of TIGIT + CD8 + T cells expressing CD137 and CD69 simultaneously was observed in HCs than in PLWH based on the activation-induced marker assay. Compared with 0W, SARS-CoV-2-specific TIGIT + CD8 + T-cell responses in PLWH were not enhanced at 12W but were enhanced in HCs. Additionally, at all time points, the SARS-CoV-2-specific responses of TIGIT + CD8 + T cells in PLWH were significantly weaker than those of TIGIT - CD8 + T cells. However, in HCs, the difference in the SARS-CoV-2-specific responses induced between TIGIT + CD8 + T cells and TIGIT - CD8 + T cells was insignificant at 4W and 12W, except at 0W.
CONCLUSIONS
TIGIT expression on CD8 + T cells may hinder the T-cell immune response to a booster dose of an inactivated SARS-CoV-2 vaccine, suggesting weakened resistance to SARS-CoV-2 infection, especially in PLWH. Furthermore, TIGIT may be used as a potential target to increase the production of SARS-CoV-2-specific CD8 + T cells, thereby enhancing the effectiveness of vaccination.
Humans
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Antibodies, Viral
;
CD8-Positive T-Lymphocytes
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COVID-19/complications*
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COVID-19 Vaccines/immunology*
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HIV Infections/complications*
;
Receptors, Immunologic
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SARS-CoV-2