1.Structure and function of the genome of coxsackievirus B3.
Wen-Qi HE ; Hui-Jun LU ; Feng GAO
Chinese Journal of Virology 2009;25(5):395-400
2.Effect of hypertonic sugar eyes drops with local to the oxygen therapy for severe corneal edema after cataract surgery
Juan, ZHANG ; Xiao-Jun, QI ; Wen-Feng, DING
International Eye Science 2017;17(6):1161-1163
AIM: To explore the effect of hypertonic sugar eyes drops with local to the oxygen therapy for severe corneal edema after cataract surgery.METHODS: Totally 68 patients (68 eyes) with severe corneal edema after phacoemulsification were selected from January 2014 to December 2015 in our hospital, who were aged 53-80(64.45±4.24), including 30 males and 38 females.According to different treatment, they were divided into treatment group (34 cases) given conventional therapy + hypertonic sugar eyes drops with local to the oxygen therapy, the control group (34 cases) given conventional treatment + hypertonic sugar eyes drops.Visual acuity and corneal situation were observed during the treatment.RESULTS: Corneal edema fade time of treatment group was 11.62+0.53d, that of control group was 15.23±0.62d, the difference between the two groups was significant (P<0.05).Preoperative best corrected visual acuity (BCVA) and corneal endothelial cell count had no significantly difference between the two groups while the corneal endothelial cell count were significantly different compared with postoperative of the two groups (P<0.05).At 7d after treatment, the BCVA and corneal endothelial cell count had significantly difference between the two groups (P<0.05), which did not have significant difference at 1mo after treatment (P>0.05).The effective rates of the two groups was significantly different (P<0.05).CONCLUSION: Hypertonic sugar eyes drops with local to the oxygen therapy is effective for severe corneal edema after cataract surgery.
4.Histamine H3 receptor inhibited electrically evoked cytoplasmic calcium in differentiated skeletal C2C12 myoblasts
Lin QI ; Xiao FENG ; Yan CHEN ; Rui XUE ; Feng ZHANG ; Suyun WANG ; Suke SUN ; Jianguo WEN
Chinese Journal of Pathophysiology 2015;(6):1115-1119,1124
AIM:To explore the expression and possible function of histamine H3 receptor (H3R) in striated myogenesis and the differentiated C2C12 cells.METHODS: H3R and myogenesis late marker myosin heavy chain (MHC) were detected at mRNA and protein levels during C2C12 myogenesis.H3R antagonist ciproxifan was added and the expression of the myogenesis early marker desmin, intermediate markers myogenin and MHC was detected.Differentia-ted myoblasts were loaded with Fluo-4 calcium indicator dye and the effect of R-( a)-methylhistamine ( RMeHA) on the cy-toplasmic calcium concentration was determined under the 200 mA electrical stimulation.RESULTS: The expression of H3R and MHC was increased during myogenesis.Ciproxifan incubation had no influence on the 3 striated myogenesis mar-kers (P>0.05).In C2C12 myoblasts, RMeHA (10 nmol/L~100 μmol/L) effectively diminished cytoplasmic calcium peak when the cells were electrically paced (P<0.05).The best inhibitory effect of RMeHA was observed at dose of 100 nM for 10 min and 20 min, which was higher than that for 5 min (P<0.05).CONCLUSION: H3R might have little effect on the myogenic differentiation, but diminishes cytoplasmic calcium peak of the differentiated myoblasts under electri-cal stimulation.
5.Clinical analysis of Staphylococcus aureus resistance to methicillin in patients with coal worker's pneumoconiosis complicated by lung cancer.
Si-hai LIU ; Pei-yue LIU ; Wen FENG ; Jun-he DAI ; Cheng-dong QI ; Fang QIAN
Chinese Journal of Industrial Hygiene and Occupational Diseases 2004;22(5):391-392
6.Effect of advanced glycosylation end products on oxidative stress and MCP-1 in human renal mesangial cells.
Min FENG ; Cheng-Bo XU ; Jun-Ping WEN ; Gui-Fang LIN ; Qi LV ; Guo-Liang HUANG
Chinese Journal of Applied Physiology 2014;30(4):306-313
OBJECTIVETo investigate the effects of advanced glycosylation end products (AGEs) modified bovine serum albumin (AGE-BSA) on the expression of reactive oxygen species (ROS) and monocyte chemoattractant protein-1 (MCP-1) in human renal mesangial cells (HRMCs).
METHODSHRMCs were cultured in vitro with medium containing different doses of AGE-BSA or BSA (50,100, 200, 400 mg/L) for 48 hours, or with AGE-BSA (200 mg/L) for different times (12, 24, 48, 72 h). Immunocytochemistry assay was used to estimate the protein level of RAGE. The ROS in cells were measured by flow cytometry and the mRNA expression of MCP-1 were analyzed by semi-quantiative reverse transcription-polymerase chain reaction (RT-PCR) after treatment with AGE-BSA or BSA.
RESULTSThe protein level of RAGE was upregulated in the HRMCs with AGE-BSA. The expression of ROS and MCP-1 significantly enhanced by incubation of AGE-BSA in a time- and dose-dependent manner. The effects of AGE-BSA-induced up-regulation of ROS and MCP-1 level was significantly blocked by neutralizing antibodies to RAGE, while the expression of ROS and MCP-1 stood nearly unchanged after cultured with huamn IgG.
CONCLUSIONThe expression of ROS and MCP-1 in HRMCs is induced by AGE-BSA through RAGE, which may have potential effects in the pathgenic mechanism of diabetic nephropathy.
Cells, Cultured ; Chemokine CCL2 ; metabolism ; Glycation End Products, Advanced ; pharmacology ; Humans ; Mesangial Cells ; drug effects ; metabolism ; Oxidative Stress ; drug effects ; Reactive Oxygen Species ; metabolism ; Receptor for Advanced Glycation End Products ; Receptors, Immunologic ; metabolism ; Serum Albumin, Bovine ; pharmacology
7.Morphology study on traditional Chinese medicine of animal skeleton of osteon myospalacem baileyi.
Wen-Qi LIU ; Hua YAN ; Si-Yu MA ; Feng WEI ; Shuang-Cheng MA
China Journal of Chinese Materia Medica 2014;39(19):3736-3740
Sailonggu, a traditional Chinese medicine is whole skeleton of Myospalax baileyi, which is a kind of animal of rodent from Qinghai-Tibet Plateau of China. Osteon Myospalacem Baileyiis the first category medicinal materials of China Food and Drug Administration. For better quality control, a method of the morphological identification of Osteon Myospalacem Baileyi was established by means of studying characteristics of the animal skeleton, it's microscopic characteristics of powder, and literatures comparison. The characteristics of Osteon Myospalacem Baileyi were observed and recorded in detail and marked by number, which could be used for identifying crude drug of Osteon Myospalacem Baileyi efficiently.
Animals
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Bone and Bones
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anatomy & histology
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chemistry
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China
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Medicine, Chinese Traditional
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Rodentia
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anatomy & histology
8.Bisphosphonate effects on capthesin K and bone resorption function during osteoclast differentiation
Wei DONG ; Xiaojie FENG ; Yongqiang LIANG ; Hongfeng PENG ; Jiupeng DENG ; Liming WEN ; Mengchun QI
Chinese Journal of Tissue Engineering Research 2014;(33):5293-5298
BACKGROUND:Studies have shown that bisphosphonates inhibit osteoclast resorption, but whether cathepsin K, a key cytokine of bone resorption, plays an effect has rarely been reported.
OBJECTIVE:To study the effect of bisphosphonate on capthesin K and bone resorption function during osteoclast differentiation.
METHODS:Osteoclasts were cultured by mouse monocyte-macrophage cellline-RAW264.7. The cells were divided into two groups:control group, treated with 100μg/L receptor activator of nuclear factorκB ligand factor;alendronate group, treated with 100μg/L receptor activator of nuclear factorκB ligand factor+10-7 mol/L alendronate. Osteoclastogenesis and resorption function of osteoclasts were examined at 7 days of culture and gene expression of capthesin K was detected by immunofluorescence method at 72 hours of culture. Western blot assay was used to detect capthesin K protein expression at 72 hours of culture.
RESULTS AND CONCLUSION:Tartrate-resistant acid phosphatase positive multinuclear cells were observed and resorption lacunae formed in two groups. Control group showed the higher number of tartrate-resistant acid phosphatase positive multinuclear cells and larger size of resorption lacunae than the alendronate group (P<0.01). Immunofluorescence showed expression of capthesin K was higher in the control group than the alendronate group (P<0.01);furthermore, the protein expression of capthesin K was also lower in the alendronate group than the control group (P<0.01). These findings indicate that bisphosphonates could strongly inhibit osteoclastogenesis and its resorption function by inhibiting gene expression of capthesin K.
9.Effect of bisphosphonate on osteoclast differentiation and tartrate-resistant acid phosphatase
Wei DONG ; Xiaojie FENG ; Yongqiang LIANG ; Jiupeng DENG ; Liming WEN ; Mengchun QI
Chinese Journal of Tissue Engineering Research 2014;(38):6069-6073
BACKGROUND:Tartrate-resistant acid phosphatase is a specific marker for osteoclast differentiation and bone resorption, which is a sign of osteoclast maturity.
OBJECTIVE:To study the effect of alendronate on tartrate-resistant acid phosphatase related to osteoclast differentiation and bone resorption.
METHODOsteoclasts were cultured by mouse monocyte-macrophage cellline-RAW264.7. The cells were divided into two groupcontrol group, treated with 100μg/L receptor activator of nuclear factorκB ligand factor;alendronate group, treated with 100μg/L receptor activator of nuclear factorκB ligand factor+10-7 mol/L alendronate. Osteoclastogenesis and resorption function of osteoclasts were examined at 7 days of culture. Gene expression of tartrate-resistant acid phosphatase was detected by immunofluorescence method. Western blot assay was used to detect protein expression of tartrate-resistant acid phosphatase.
RESULTS AND CONCLUSION:Tartrate-resistant acid phosphatase positive multinuclear cells were observed and resorption lacunae formed in two groups. Control group showed the higher number of tartrate-resistant acid phosphatase positive multinuclear cells and larger size of resorption lacunae than the alendronate group (P<0.01). Immunofluorescence showed expression of tartrate-resistant acid phosphatase was higher in the control group than the alendronate group (P<0.01);furthermore, the protein expression of tartrate-resistant acid phosphatase was also lower in the alendronate group than the control group (P<0.01). These findings indicate that bisphosphonates could strongly inhibit osteoclastogenesis and its resorption function by inhibiting protein expression of tartrate-resistant acid phosphatase.
10.The expression of musashi-1 in small intestinal mucosa severely damaged by high dose 5-FU
Yu-Qi LUO ; Cheng-Tang WU ; Yin WEN ; Jin-Feng LIU ;
Chinese Journal of General Surgery 2000;0(12):-
Objective To investigate the expression of musashi-1(msi-1)and its significances in small intestinal mucous severely damaged by high close 5-FU.Methods Total 40 adult C57BL/6J mice were divided into control group(n= 8,group D)and experimental group(n=32).Mice in control group received intraperitoneal injection of PBS as control,and mice in experimental group were intraperitoneally injected high dose 5-FU(150 mg per kg of body weigh for five days).After treatment 1 day(group A),3 days(group B)and 5 days( group C),the dying mice were killed,HE straining and immunohistochemical technique were carried out for detecting the expression of putative marker of intestinal epithelial stem cells——musashi-1(msi-1)in the samples of the meddle intestine,and the percentage of the msi-1 positive cells from the intestinal mucosal cells of the mice in group A was detected by flow cytometry.Results After the treatment of high dose 5-FU,the intestinal mucous was damaged severely;the number of msi-1 positive cells increased markedly;The intestinal mucosal cells can be divided into two groups by flow cytometry,and in the group in which the value of FSC was higher,the percentage of msi-1 positive cells increased to 67.75 %.Conclusions After the treatment of high dose of 5-FU,the percentage of intestinal stem cells increased significantly;this model may be useful for further isolation and enrichment of intestinal epithelial stem cells.