1.Progress in the Study of Chemokine CXCL9/Mig
Hui-Li LU ; Mei YU ; Wei HAN ;
China Biotechnology 2006;0(10):-
Chemokine CXCL9/Mig (monokine induced by IFN-?) belongs to the subfamily of chemotactic cytokines known as CXC-chemokines. In vivo CXCL9 is mainly induced by IFN-? in macrophages and primary glial cells. In vitro, CXCL9 can be secreted by cells such as macrophages, microvascular endothelial cells and neutrophils, in response to the synergy of IFN-? and TLR(toll-like receptor) ligands. CXCL9 is a chemoattractant for activated T lymphocytes, tumor-infiltrating T-lymphocytes, but not for neutrophils or monocytes. The receptor specific for CXCL9 is CXCR3, a G protein-coupled protein which has seven transmembrane domain. The structure and the chemical characterization of CXCL9, as well as its effects on autoimmune deseases, allograft rejection, cancer therapy were reviewed.
2.Effects of plasminogen activator inhibitor-1 antisense RNA on aorta endothelial cells cultured
Chinese Journal of Geriatrics 2001;0(05):-
Objective To investigate the role of antisense RNA of plasminogen activator inhibitor 1 (PAI 1) in regulating the expression of PAI 1 and vascular endothelial growth factor (VEGF) in aorta endothelial cells (EC) cultured in vitro. Methods The second extron of PAI 1 was amplified by polymerase chain reaction(PCR) and the product was inserted into eukaryotic cell expression vector pcDNA3.1(-) to construct PAI 1 antisence RNA recombinant plasmid. The recombinant plasmid was transfected into EC and the PAI 1 expression was detected by immunohistochemistry, Westernblot and ELISA. The effects of PAI 1 variation on VEGF were examined by immunofluorescence method. Results PAI 1 antigen was the lowest (0 017 ng/ml) in cells and the immunofluorescence representing the expression of VEGF in the cytoplasm showed the weakest at the third day after transfection. At the fifth day, PAI 1 antigen increased to 0 093 ng/ml with VEGF expression increased correspondingly. At the seventh day, PAI 1 antigen(0 143 ng/ml) and VEGF increased closed to normal level. Conclusions PAI 1 antisense RNA blocked the translation of PAI 1 proteins effectively and inhibited the expression of VEGF in aorta endothelial cells.
3.Correlation between Aquaporin-4 Antibody and Optic Neuropathy in Patients with Neuromyelitis Optica Spectrum Disorder
Lu YU ; Kena TANG ; Xingxing ZHONG ; Mei LI ; Yangtai GUAN
Journal of China Medical University 2017;46(4):345-348
Objective To determine the correlation between aquaporin-4 antibody (AQP4-Ab) and optic neuropathy in patients with neuromyelitis optica spectrum disorder (NMOSD).Methods The clinical and biochemical data of 53 patients with NMOSD diagnosis based on AQP4-Ab level in Changhai Hospital between January 2010 and October 2015 were retrospectively analyzed.According to optic neuropathy occurrence,the NMOSD patients were divided into optic neuropathy and non-optic neuropathy groups.Clinical and biochemical characteristics were compared between the two groups.According to the serum AQP4-Ab levels,the NMOSD patients were divided into AQP4-Ab seropositive and seronegative groups.The incidence of optic neuropathy was compared between the two groups.The correlation between optic neuropathy and AQP4-Ab levels was analyzed.Results Between the optic neuropathy and non-optic neuropathy groups,no significant differences in sex,age at onset,disease course,serum alanine aminotransferase levels,protein levels in cerebral spinal fluid,IgG index,and oligoclonal band were observed (P > 0.05).However,statistically significant differences were found in frequency,superficial sensory impairment,serum creatinine level,and serum AQP4-Ab level (P < 0.05).Between the AQP4-Ab sempositive and semnegative groups,a statistically significant difference in the incidence of optic neuropathy was observed (F =4.93,P < 0.05).The incidence of optic neuropathy positively correlated with AQP4-Ab levels (r =0.297,P < 0.05).Conclusion NMOSD patients with AQP4-Ab seropositivity could be prone to optic neuropathy,and the correlation may be beneficial to early diagnosis,therapy,and monitoring of NMOSD.
4.Effect of comprehensive schistosomiasis control measures in Kaihua County from 1996 to 2015
Mei LU ; Jianfeng ZHANG ; Li SU ; Decheng YU
Chinese Journal of Schistosomiasis Control 2017;29(1):74-76
Objective To evaluate the control effect of comprehensive measures of schistosomiasis after its transmission in?terruption in Kaihua County,Zhejiang Province,so as to provide the references for further consolidation of schistosomiasis con?trol. Methods The data of Oncomelania hupensis snail survey and control,as well as environmental reform in Kaihua County were collected and analyzed from 1996 to 2015. Results From 1996 to 2015,totally 2 635 snail habitats and 102.75 hm2 area with snails were found,and 125.4 thousand snails were dissected and no one was schistosome infected. The accumulated snail control area was 4 932.98 hm2,and the area with snails was effectively reduced by the comprehensive control measures. Conclu?sion The schistosomiasis control effect could be consolidated by the comprehensive control measures emphasizing environmen?tal reconstruction,and the snail surveillance work still should be strengthened.
5.Case of sublingual cavernous hemangioma.
Ying-Chun TENG ; Dong-Dong YU ; Mei LU
Chinese Acupuncture & Moxibustion 2014;34(1):40-40
6.Detection of microvesicle miRNA expression in ALL subtypes and analysis of their functional roles.
Wen-Ying, LI ; Xiao-Mei, CHEN ; Wei, XIONG ; Dong-Mei, GUO ; Li, LU ; Hui-Yu, LI
Journal of Huazhong University of Science and Technology (Medical Sciences) 2014;34(5):640-5
Microvesicles (MVs) are the heterogeneous mixtures of vesicles. MVs released by leukemia cells constitute an important part of the leukemia microenvironment. MVs might act as important reservoirs of microRNAs (miRNAs). It is worth evaluating whether MVs possess some unique miRNA contents that are valuable in understanding the pathogenesis. In this study, we investigated the miRNA expression patterns of Nalm-6-derived MVs, Jurkat-derived MVs and normal cell-derived MVs using miRNA microarrays. The potential target genes regulated by differentially expressed miRNAs were also predicted and analyzed. Results demonstrated that 182 miRNAs and 166 miRNAs were differentially expressed in Nalm-6-MVs and Jurkat-MVs, respectively. Many oncogenes, tumor suppressors and signal pathway genes were targeted by these aberrantly expressed miRNAs, which might contribute to the development of B-ALL or T-ALL. Our findings expanded the potential diagnostic markers of ALL and provided useful information for ALL pathogenesis.
8.Chemical constituents from herb of Epimedium brevicornum.
Yu-Bo LI ; Fan-Hao MENG ; Xiu-Mei LU ; Fa-Mei LI
China Journal of Chinese Materia Medica 2005;30(8):586-588
OBJECTIVETo investigate the chemical constituents of Epimedium brevicornum.
METHODThe chemical constituents were isolated by using silica gel column chromatography and preparative TLC. The structures were identified on the basis of physical-chemical constants and spectral data.
RESULTFive compounds were isolated and identified as hyperoside, icariin, epimedin B, epimedin C, inositol.
CONCLUSIONCompound I and III - V were isolated from the plant for the first time.
Epimedium ; chemistry ; Flavonoids ; chemistry ; isolation & purification ; Plant Components, Aerial ; chemistry ; Plants, Medicinal ; chemistry ; Quercetin ; analogs & derivatives ; chemistry ; isolation & purification
9.The growth rule of tumor tissue and immunohistochemical observation of HSP in mice S180 sarcome model
Yu TANG ; Xuemei CUI ; Mei YUAN ; Shibi LU ; Jingxiang HUANG ; Keshun ZHU ;
Journal of Medical Postgraduates 2003;0(05):-
e: Objective:To establish a useable animal model for the purification and immunotherapy of HSP with the observation of the growth rule of S180 sarcome tumor tissue and the immunohistochemical expression of different HSP in mice. Methods:The tumor incidence?the role of growth?the survival time and immunohistochemical expression of different HSP were observed after the S180 sarcome cells were inoculated at Balb/C mice back subcutaneous in different dose. Results:Sarcoma were formed in 100%.There are significant difference between vary dose in survival time, The expression was positive in HSP60?70?90? and grp94, and HSP70 expression was enhanced whereas HSP90? expression was decreased after heat shock treated. Conclusion:The use of S180 sarcome in mice is a good model to observe the expression of different HSP and the tumor tissue is suitable to purify. The model can be also used in the library study of HSP tumor vaccine.
10.Studies of Temperature Shift Fermentation for Eicosapentaenoic Acid Production by Nitzschia laevis
Xiao-Hong CAO ; Yu-Hua ZHAO ; Mei-Fang LU ; Jing LEI ; Chun-Ling WANG ;
China Biotechnology 2006;0(12):-
Fermentation for Eicosapentaenoic Acid(EPA) production by Nitzschia laevis at various temperature between 10℃ and 30℃ was investigated and the dynamics characteristics during fermentation process were also analyzed.Based on the results,a varying temperature nursing method of two stage control strategy is proposed:During the first stage,which comprises the delay phase and the initial index phase,the temperature is maintained at 25℃;then the temperature is shifted to 20℃ and kept up till the end of the fermentation process.By this method,a EPA content of 6.0% and a yield of 291.60 mg/L have been gained.These are 24.07% and 18.81% higher than that of fixed temperature(25℃) fermentation,respectively.