2.The signal transduction pathway of rats with liver fibrosis regulated by leptin and interfering effects of mistletoe alkali
Xia MENG ; Xuecong WANG ; Ping FENG ; Jing LU ; Xuejiang WANG
Chinese Journal of Comparative Medicine 2015;(10):1-6
Objective To investigate the signal transduction pathway mechanisms of rats with liver fibrosis regulated by leptin and interfering effects of mistletoe alkali .Methods The hepatic fibrosis in rats model was established by injecting carbon tetrachloride .Forty-five SD rats were randomly divided into normal group ,model group and therapeutic group.All rats except rats in normal group were intraperitoneally injected with 40%carbon tetrachloride in peanut oil with a dose of 2.0 mL/100g according to the body weight twice a week for 8 weeks.Then, the therapeutic group was given mistletoe alkali (8g/(kg· d)) for 8 weeks via gastrogavage.Rats in normal and model group were served with distilled water at the same time.At the end of the 16th week, blood and tissue specimens were taken from all the rats .The influence of mistletoe alkali on liver morphology in liver fibrosis rat model was reviewed by HE and Masson staining .The effects of mistletoe alkali on the expression of Leptin and its receptor ( OB-Rb ) in HSC in fibrosis rat model were determined by immunohistochemistry (IH).The expression of JAK2, STAT3 and the activity of phospho -JAK2, phospho-STAT3 were detected by Western blotting analysis .Results The degree of fibrosis of the model group was more severe than the normal group and the treatment group , which suggested that mistletoe alkali can reverse liver fibrosis in rats . Immunohistochemical staining showed that mistletoe alkali reduced the hepatic expression of leptin and OB -Rb in rats with liver fibrosis in comparison with their expression in the model group .Compared with the normal group , the expression of JAK2 and STAT3 increased in the model group .However, the expression of JAK2 and STAT3 decreased in the medication groups compared with the model group .Conclusion Mistletoe alkali can effectively ameliorate liver fibrosis in rats possibly through inhibiting hepatic leptin and its receptor expressions , which through inhibiting hepatic leptin and its receptor expressions , thus inhibit the JAK2/STAT3 signaling pathway .
3.Clinical research of protein-free calf blood extract eye gel for corneal epithelial defect
Xiao-Xia, NIU ; Yun-Feng, LI ; Lu-Yang, ZHAN
International Eye Science 2014;(7):1313-1315
AlM: To evaluate the clinical effect of 200g/L protein-free calf blood extract eye gel for corneal epithelial defect.METHODS: One hundred and sixty - eight cases of corneal epithelial defect ( 58 cases with herpes simplex keratitis; 24 cases with chemical injury; 85 cases with pterygium operation injury ) were randomly divided into two groups: 84 eyes were treated with protein-free calf blood extract eye gel; 84 cases were treated with basic fibroblast growth factor eye gel ( bFGF ) . The bFGF and protein-free calf blood extract eye gels were used 4 times a day. The treatment course was 7d. Epithelial defect restoration, local symptom and sign were observed.
RESULTS: The difference between pre-treatment and post-treatment was significant ( P<0. 01 ) in the two groups. The effect of protein-free calf blood extract eye gel (83. 3%) group was prior to that of bFGF (69%) for corneal epithelial defect. The effective rate of protein-free calf blood extract eye gel in the herpes simplex keratitis, chemical injury and pterygium operation injury was 72. 4%,69. 2% and 95. 2%. Localized stimulus and adverse reaction of all over the body were not been observed.
CONCLUSlON: Protein-free calf blood extract eye gels is valuable and safe for corneal epithelial defect.
4.Medical voucher system in Hong Kong and Macao and its implications to mainland China
Feng CHANG ; Qiang XIA ; Yun LU ; Penglei CUI ; Shasha YANG
Chinese Journal of Health Policy 2015;8(3):40-45
It is important and difficult to establish the market competition mechanism in the health care re-form. Medical voucher system in Hong Kong and Macao can provide policy guidelines for Mainland China to promote institutional innovation, force public hospital reform and the rational allocation of medical and health resources. This paper introduced the origin and development of medical voucher system. Based on the description of the implementa-tion background, similarities and differences and effects of medical voucher system in Hong Kong and Macao, the pa-per found that medical voucher system could help encourage the demander to make more frequent use of medical serv-ices, improve their consciousness of prevention and health care and promote family doctor system. Through analyzing the applicability of medical voucher system in mainland China, the paper pointed out it was consistent with the reform orientation and could be served as a useful supplement to the health care system to improve medical insurance, medi-cal assisstance system as well as an effective measure to develop private medical institutions.
5.Regulatory effect of a Chinese medicine prescription Hu Qi Shan on the telomerase activity in hepatic precancerous lesions in rats
Xia MENG ; Shuhong LIU ; Xia LI ; Ping FENG ; Jing LU ; Xuejiang WANG
Chinese Journal of Comparative Medicine 2016;26(10):36-42
Objective To explore the possible mechanism of action of telomerase in hepatic precancerous lesions, and the regulatory effect of a Chinese medicine prescription HU Qi Shan ( HQS) and its principal drug mistletoe alkali on the telomerase activity in rat liver tissues.Methods Rat model of hepatic precancerous lesions was established by Solt-Farber two-step protocol.The model rats were randomly divided into 5 groups, including the model group, high-dose HQS [8 g/(kg· d)] group, low-dose HQS [4 g/(kg· d)] group, and mistletoe alkali[8 mg/(kg· d)] group.γ-Glutamy-transpeptidase (γ-GT) was analyzed by immunohistochemistry.AFP was detected by immunofluorescence technique.The telomerase activity was detected using a quantitative telomerase detection kit.The expression of NF-κB P65 was detected by immunohistochemistry.The cytoplasmic protein IκB-αwas detected by western blotting.Results After treated with HQS and mistletoe alkali, the areas ofγ-GT-positive foci and number of AFP-positive cells in the liver tissus were significantly decreased than those of the model group ( P<0.05 for both) , the telomerase activity was decreased, the number of NF-κB P65-positive cells was also decreased ( P <0.05 ) , whereas the intracytoplasmic expression of IκB-αproteins was significantly increased ( P <0.05 ) .Conclusions HQS and mistletoe alkali can suppress the telomerase activity.Its possible mechanism may be through inhibition of the over-expressed apoptosis-related genes such as NF-κB P65 and increase the expression of IκB-αdecreasing the telomerase activity.
6.Bibliometric Analysis of core journal papers published by nursing staff in a third-grade class-A hospital during 2013-2015
Xuan TAN ; Caihong LU ; Zhengrong WANG ; Lin PENG ; Xia JIANG ; Feng FENG ; Lin YE ; Shu LEI
Modern Clinical Nursing 2017;16(6):57-60
Objective The nursing staff's output and journals distribution of core scientific journals papers were analyzed, providing evaluation data and a decisive basis for scientific research management. Methods A retrospective analysis was performed to the publication of core journals papers of nursing staff in 2013-2015 based on the publication from different nursing positions , the ranking of published nursing papers from different departments and different journals by using analysis method of bibliometric. Results About 1550 nursing papers were published , of which the number of authors whose paper was published in core journals was 216 , the number of papers published in core journals was 378, and 38 authors published more than 3 papers (17.6%). The core journals papers published rate in different position was statistically significant (P<0.01). The papers published journals were concentrated in nursing class. Dominated the first 3 places in the list of core journals paper number of departments were department of nursing , cancer center and operation room, respectively. Conclusion In order to improve the nursing scientific research level of nursing staff, it is necessary to establish a theoretical system of scientific knowledge training , formulate a long-term effective mechanism in paper management , focus on scientific research talent introduction and training and mobilize the nursing research enthusiasm of nursing staff.
7.Research on critical aerating flux of internal-loop granular sludge bed nitrifying reactor.
Gang LU ; Ping ZHENG ; Feng-Yi XIA
Chinese Journal of Biotechnology 2004;20(5):795-799
The internal-loop granular sludge bed nitrifying reactor is a new type of aerobic nitrifying equipment and has taken on a good potential for nitrification. The critical aerating flux for liquid loop and critical aerating flux for fluidization of granular sludge are two important parameters for its operation. The relationship between liquid superficial velocity in riser (U1r) and aerating flux(Ugr) was studied, the model parameters were measured by experiment, and the relational expression was established. According to the model, the critical aerating flux for liquid loop and the critical aerating flux for fluidization of granular sludge were calculated as 1.017cm/min and 2.662cm/min, respectively. The experimental data from reactor operation showed that the two calculated critical aerating fluxes near the practical values. So they could be used to direct the design and operating optimization for the internal-loop granular sludge bed nitrifying reactor.
Bacteria, Aerobic
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metabolism
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Bioreactors
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Nitrites
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metabolism
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Sewage
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chemistry
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microbiology
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Waste Disposal, Fluid
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methods
8.Effects of serum of Bushen Huoxue prescription (Chinese characters) on classic Wnt/β-catenin signaling pathways of osteoblasts.
Bing XU ; Hong-ting JIN ; Xiao-feng WANG ; Lu-wei XIA ; Pei-jian TONG
China Journal of Orthopaedics and Traumatology 2015;28(6):553-558
OBJECTIVETo observe effects of serum Bushen Huoxue prescription(Chinese characters) on classic Wnt/β-catenin signaling pathways of osteoblasts, and explore mechanism of Bushen Huoxue prescription (Chinese characters) for preventing osteoporosis.
METHODSTwenty health female rats were randomly divided into two groups, including Bushen Huoxue (Chinese characters) group and saline group,10 in each group. Bushen Huoxue (Chinese characters) group and Saline group were gavaged Bushen Huoxue and saline every day for 1 week. Bushenhuoxue containing serum and saline containing serum were got according to methods of serum preparation of drug-containing. The osteoblasts was cultured with neonatal rat skull according to Enzyme Consumer Law, and was identified by Wright-Giemsa staining (R-J) and alkaline phosphatase staining (ALP). The third generation of osteoblasts was divided into three groups, including saline group, normal group,Bushen Huoxue (Chinese characters) group. Each group were added to 15% appropriate medium. ALP activity of osteoblasts and osteoblasts proliferation rate were tested, mineralized nodules were observed, the expression of β-catenin, Runx2, Osx mRNA of osteoblasts were tested by RT-PCR.
RESULTSThere was blue granules in cytoplasm, cell nucleus was flint with 1 to 3 nucleoli showed by R-J staining, morphology of osteoblasts were cultured. ALP staining showed cytoplasm with purple granules, the results showed that the cultured cell was osteoblasts. The content of ALP in Bushen Huoxue (Chinese characters)group was (6.272±0.131) ,appreciation rate was (0.81? 0.172), and could significantly improve differentiation and proliferation activity of osteoblasts compared with Saline group (P< 0.01). There were four different size orange nodules, the Maximun nodule was 1.0 x 1.0 cm in Bushen Huoxue (Chinese characters) group after Alizarin red staining, the results showed Bushen Huoxue (Chinese characters)group could obviously improve mineralization of osteoblasts. The expression of mRNA of β-catenin, Runx2 and Osx in Bushen Huoxue (Chinese characters)group were (1.782±0.944), (1.935±0.994) and (1.610±0.811) by RT-PCR,it was significantly increased compared with saline group (P<0.01), but there was no difference between Bushen Huoxue (Chinese characters)group and normal group (P>0.05).
CONCLUSIONBushen Huoxue (Chinese characters)group could obviously promote differentiation, proliferation and mineralization of osteoblasts through activation of Wnt, β-catenin signaling pathway. It suggested that the mechanism of action of Bushen Huoxue (O'f f Il.t)particle clould prevent osteoporosis through the activation of Wnt, β-catenin signaling pathway.
Animals ; Cell Differentiation ; drug effects ; Cell Proliferation ; drug effects ; Drugs, Chinese Herbal ; pharmacology ; Female ; Humans ; Osteoblasts ; cytology ; drug effects ; metabolism ; Osteoporosis ; drug therapy ; genetics ; metabolism ; physiopathology ; Rats ; Rats, Sprague-Dawley ; Wnt Proteins ; genetics ; metabolism ; Wnt Signaling Pathway ; drug effects ; beta Catenin ; genetics ; metabolism
9.Adaptive responses on chromosome aberration and DNA breakage of peripheral lymphocytes from workers exposed to thorium and rare earth mixed dust in Baotou Steel Plant
Qingjie LIU ; Jiangbin FENG ; Xue LU ; Deqing CHEN ; Yufei LIU ; Keju XIA ; Huimin LV ; Xu SU
Chinese Journal of Radiological Medicine and Protection 2008;28(3):235-238
Objective To explore if the occupational exposure to low dose thorium could induce adaptive response in peripheral lymphocytes.Methods 40 individuals.who exposed to thorium and rare earth mixed dust(exposure group) or control in Baotou Steel Plant, were selected, and chromosome aberrations were analyzed.Then the peripheral blood samples were irradiated in vitro with 2 Gy60Co γ-rays,and unstable chromosome aberration or DNA stand breakage analysis using single cell gel electrophoresis was performed. Results The dicentrics before 2 Gy exposure in exposure group was higher than that in control(P>0.05). But the dicentries after 2 Gy exposure in exposure group was lower than that in control,but not significantly (P>0.05).The tricentrics in exposure group was significantly lower than that in control(U=3.1622, 0.0ol
10.Effects of WWOX gene transfection on cell growth of epithelial ovarian cancer
Hongchao YAN ; Jiaqiang XUE ; Xiaoyuan LU ; Meirong WAN ; Xia FENG ; Xiaoyun LIU
Chinese Journal of Obstetrics and Gynecology 2008;43(5):361-365
Objective To study the effects of anti-oncogene WWOX on cell growth of epithelial ovarian cancer,in order to find a new approach of gene therapy for ovarian cancer.Methods A eukaryotic expression vector containing WWOX was transfected into ovarian cancer cell line HO8910 in vitro (recombinant plasmid group),and positive cell clones were selected and amplified.Expression of WWOX protein was detected by western blot. Untransfected cell(blank contrast group) and transfected empty plasmid cell(empty plasmid group)were served as control groups.In vitro,the biology effect of WWOX on HO8910 cell was analyzed throush the methyl thiazolyl tetrazolium test,transwell chamber cell invasion assay in vitro,agarose clony-formation and flow cytometry.In vivo,the cell of transfection was transplanted intraperitoneally in to BALB/c nude mice.The survival time and growth ability of nude mice were observed.Results (1)Recombinant plasmid group cell could steadily express WWOX protein,while in empty plasmid group and blank control group the expression of WWOX protein were not detected.(2)The growth rate of recombinant plasmid group cell was inhibited.(3)The agnrose clony-formation rate of recombinant plasmid group(19.8%)was significantly lower than that of the empty plasmid group(54.5%)and blank control group(56.0%,P<0.05).(4)Flow cytometry showed that(72.08±0.39)% of cells was arrested at G0/G1 stage in recombinant plasmid group, while in empty plasmid group and blank control group G0/G1 stage cells were at (41.02±1.08)% and (39.31±0.67)% (P<0.05). (5) In vitro invasion assay showed that invasion cell number in recombinant plasmid group (89.7±3. 1 ) was not significantly different from that of empty plasmid group(91.2±1.3) and blank control group(91.4±1.3, P >0. 05). (6) In vivo test in nude mice showed that WWOX gene could inhibit tumor growth of the HO8910 cells. Conclusions Tumor suppressor gene WWOX could interfere with the cell cycles of ovarian cancer cell and inhibit cell proliferation. As a new valuable tool,it premises to have application in the gene therapy of ovarian cancer.