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Search Results: 1 - 10 of 54215 matches for " Ming-Qing Du "
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Identification of novel prognostic markers in cervical intraepithelial neoplasia using LDMAS (LOH Data Management and Analysis Software)
Rifat A Hamoudi, Amina El-Hamidi, Ming-Qing Du
BMC Bioinformatics , 2005, DOI: 10.1186/1471-2105-6-18
Abstract: An algorithm to identify prognostic disease markers is devised and implemented as novel software called LDMAS. LDMAS is a software suite designed for data retrieval, management and integrated analysis of the clinico-pathological data and molecular results from independent databases. LDMAS is used in stratification of disease stages according to clinical stage or histological features and correlation of various clinico-pathological features with molecular findings to obtain relevant prognostic markers such as those used in predicting the outcome of cervical intraepithelial neoplasia (CIN). This approach lead to the identification of novel prognostic cervical cancer markers and extraction of useful clinical information such as correlation of Human Papilloma Virus (HPV) status with CIN lesions.A novel software called LDMAS is implemented and used to extract and identify prognostic disease markers. The software is used to successfully identify 4 novel prognostic markers that can be used to predict the outcome of CIN. LDMAS provides an essential platform for the extraction of useful information from large amount of data generated by LOH studies. LDMAS provides three unique and novel features for LOH analysis : (1) automatic extraction of relevant data from patient records and reports (2) correlation of LOH data with clinico-pathological data and (3) storage of complex data in flexible format. The first feature automates the creation of database of clinically relevant information from huge amount of data, the second feature extracts useful biomedical information such as prognostic markers in CIN and the third feature simplifies the statistical analyses of the data and allows non-statisticians to carry out the analysis. Additionally, LDMAS can be used to extract clinically useful markers from other diseases and interface to high throughput genotyping analysis software such as GDAS used to generate LOH data from Affymetrix？ GeneChip Mapping arrays.Detection of LOH is one of
Effects of Chinese medicine for promoting blood circulation and removing blood stasis in treating patients with mild to moderate vascular dementia: a randomized, double-blind and parallel-controlled trial
Ming-qing Wei
Zhong Xi Yi Jie He Xue Bao , 2012,
Abstract: BACKGROUND: Vascular dementia (VaD) is the second common subtype of dementia after Alzheimer’s disease. However, there is still a lack of medication that demonstrates clinically relevant symptomatic improvement. Static blood obstructing the brain is the main Chinese medicine syndrome of VaD.OBJECTIVE: To evaluate the effects of Chinese medicine for promoting blood circulation and removing blood stasis in patients with mild to moderate VaD.DESIGN, SETTING, PARTICIPANTS AND INTERVENTIONS: In this 12-week randomized, double-blind, parallel-controlled trial, a total of 48 patients with mild to moderate VaD were enrolled between March 2009 and December 2010. All the patients entered a two-week placebo run-in period followed by a 12-week treatment with Chinese medicine for promoting blood circulation and removing blood stasis (n=24) or placebo (n=24), respectively. The placebo tablets have the identical taste and appearance as the Chinese medicine tablets.MAIN OUTCOME MEASURES: The primary outcome measure was the Alzheimer’s Disease Assessment Scale-cognitive subscale (ADAS-cog); the secondary outcome measures included the Activities of Daily Living (ADL) and the Mini-Mental State Examination (MMSE).RESULTS: The Chinese medicine group showed a slight deterioration of 0.25 points and the placebo group showed a deterioration of 2.35 points from baseline by the ADAS-cog, and there was a significant difference between the two groups (P=0.027). The ADL and the MMSE showed no significant difference from baseline in both groups. Adverse events were rare in both groups.CONCLUSION: The Chinese medicine for promoting blood circulation and removing blood stasis may improve cognition and it is safe and well tolerated.
CXCL12/CXCR4 Axis Triggers the Activation of EGF Receptor and ERK Signaling Pathway in CsA-Induced Proliferation of Human Trophoblast Cells
Hong-Bo Zhao, Chuan-Ling Tang, Yan-Li Hou, Li-Rong Xue, Ming-Qing Li, Mei-Rong Du, Da-Jin Li
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0038375
Abstract: Introduction Our previous study has demonstrated Cyclosporin A (CsA) promotes the proliferation of human trophoblast cells. Therefore, we further investigate the intracellular signaling pathway involved in the CsA-induced proliferation of human trophoblast cells. Methods Enzyme-linked immunosorbent assay (ELISA) was performed to evaluate the regulation of CsA on CXCL12 secretion in human trophoblast cells. Immunofluorescence analysis and western blotting analysis were used to investigate the role of CXCL12/CXCR4 axis in the CsA-induced epidermal growth factor receptor (EGFR) phosphorylation in human trophoblast cells. 5-bromo-2′-deoxyuridine (BrdU) cell proliferation assay was performed to analyze the involvement of EGFR and its downstream extracellular signal-regulated protein kinase (ERK) signaling pathway in the CsA-induced proliferation of human trophoblast cells. Results Low concentration of CsA promoted the secretion of CXCL12, and recombinant human CXCL12 promoted the phosphorylation of EGFR in primary human trophoblast cells and choriocarcinoma cell line JEG-3. The inhibition of CXCL12 or CXCR4 by either neutralizing antibodies or small interfering RNA (siRNA) could completely block the CsA-induced EGFR phosphorylation. The CsA-induced proliferation of human trophoblast cells was effectively abrogated by the EGFR inhibitor AG1478 as well as the ERK inhibitor U0126, but not by the PI3K/PKB inhibitor LY294002. CsA promoted the activation of ERK in JEG-3 cells, which was markedly abrogated in the presence of CXCL12 siRNA, or CXCR4 siRNA, or AG1478. Conclusions CsA may promote EGFR activation via CXCL12/CXCR4 axis, and EGFR downstream ERK signaling pathway may be involved in the CsA-induced proliferation of human trophoblast cells.
Auto-Ubiquitination-Induced Degradation of MALT1-API2 Prevents BCL10 Destabilization in t(11;18)(q21;q21)-Positive MALT Lymphoma
Heidi Noels, Riet Somers, Hongxiang Liu, Hongtao Ye, Ming-Qing Du, Christiane De Wolf-Peeters, Peter Marynen, Mathijs Baens
PLOS ONE , 2009, DOI: 10.1371/journal.pone.0004822
Abstract: Background The translocation t(11;18)(q21;q21) is the most frequent chromosomal aberration associated with MALT lymphoma and results in constitutive NF-κB activity via the expression of an API2-MALT1 fusion protein. The properties of the reciprocal MALT1-API2 were never investigated as it was reported to be rarely transcribed. Principal Findings Our data indicate the presence of MALT1-API2 transcripts in the majority of t(11;18)(q21;q21)-positive MALT lymphomas. Based on the breakpoints in the MALT1 and API2 gene, the MALT1-API2 protein contains the death domain and one or both immunoglobulin-like domains of MALT1 (~90% of cases) - mediating the possible interaction with BCL10 - fused to the RING domain of API2. Here we show that this RING domain enables MALT1-API2 to function as an E3 ubiquitin ligase for BCL10, inducing its ubiquitination and proteasomal degradation in vitro. Expression of MALT1-API2 transcripts in t(11;18)(q21;q21)-positive MALT lymphomas was however not associated with a reduction of BCL10 protein levels. Conclusion As we observed MALT1-API2 to be an efficient target of its own E3 ubiquitin ligase activity, our data suggest that this inherent instability of MALT1-API2 prevents its accumulation and renders a potential effect on MALT lymphoma development via destabilization of BCL10 unlikely.
Cloning and sequence analysis of A12 fatty acid desaturase of Chlorella vulgaris
小球藻△12脂肪酸去饱和酶基因的克隆与序列分析
CHI Xiao-yuan,LU Yan-du,WANG Ming-qing,BIAN Shu-guang,YANG Qing-li,QIN Song,
迟晓元,路延笃,王明清,卞曙光,杨庆利,秦松
海洋科学 , 2009,
Abstract: 利用已报道的△12脂肪酸去饱和酶基因序列的保守区域,设计简并引物,通过RT-PCR的方法获得了小球藻NJ-7的内质网型△12脂肪酸去饱和酶基因(CvFAD2)的部分序列,然后采用RACE的方法分别克隆到5'片段和3'片段,拼接后设计特异引物扩增到全长cDNA.该基因全长为2 032 bp,ORF为1158 bp,编码385个氨基酸,分子质量约为44 ku.根据已经得到的CvFAD2序列推导成氨基酸序列与一些已知物种的FAD2氨基酸序列相比较,同源性分别为普通小球藻(Chlorella vulgaris)75%,莱菌衣藻(Chlamydomonas reinhardtii)57%,石榴(Punica granatum)57%,麻疯树(Jatropha curcas)52%.系统发育分析表明,南极小球藻CvFAD2基因与真核微藻(衣藻和普通小球藻)的FAD2基因聚在一起,介于真菌与高等植物之间,并且真核微藻FAD2基因与高等植物的同源性更高,推测其在进化上与高等植物的亲源关系更近.
An Integrated Genomic and Expression Analysis of 7q Deletion in Splenic Marginal Zone Lymphoma
A. James Watkins, Rifat A. Hamoudi, Naiyan Zeng, Qingguo Yan, Yuanxue Huang, Hongxiang Liu, Jianzhong Zhang, Esteban Braggio, Rafael Fonseca, Laurence de Leval, Peter G. Isaacson, Andrew Wotherspoon, Ellen D. McPhail, Ahmet Dogan, Ming-Qing Du
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0044997
Abstract: Splenic marginal zone lymphoma (SMZL) is an indolent B-cell lymphoproliferative disorder characterised by 7q32 deletion, but the target genes of this deletion remain unknown. In order to elucidate the genetic target of this deletion, we performed an integrative analysis of the genetic, epigenetic, transcriptomic and miRNomic data. High resolution array comparative genomic hybridization of 56 cases of SMZL delineated a minimally deleted region (2.8 Mb) at 7q32, but showed no evidence of any cryptic homozygous deletion or recurrent breakpoint in this region. Integrated transcriptomic analysis confirmed significant under-expression of a number of genes in this region in cases of SMZL with deletion, several of which showed hypermethylation. In addition, a cluster of 8 miRNA in this region showed under-expression in cases with the deletion, and three (miR-182/96/183) were also significantly under-expressed (P<0.05) in SMZL relative to other lymphomas. Genomic sequencing of these miRNA and IRF5, a strong candidate gene, did not show any evidence of somatic mutation in SMZL. These observations provide valuable guidance for further characterisation of 7q deletion.
Immobilization of Papain by Macromolecular Crowding in Mesopores under Microwave Irradiation
大分子拥挤下介孔中木瓜蛋白酶的微波辅助固定化
LIU Ming-qing,WANG An-ming,WANG Hua,ZHOU Cheng,DU Zhi-qiang,ZHU She-min,YANG Ming,ZHANG Jun,SHEN Shu-bao,
刘明庆,王安明,王华,周成,杜志强,祝社民,杨明,张俊,沈树宝
过程工程学报 , 2009,
Abstract: 为了增强酶的固定化效果,通过添加大分子试剂,在微波辐射作用下将木瓜蛋白酶固定在介孔泡沫硅的孔道中. 结果表明,在加酶量为400 mg/g时,微波辐射下木瓜蛋白酶与牛血清白蛋白(BSA)共固定化制得的固定化酶催化效果最好. 当BSA含量为加酶量的5%(ω)时,固定化酶表观活力高达419.1 U/mg,相对活力和酶活回收率分别为126.0%和119.1%. 影响固定化酶活力的主要因素依次为加酶量、BSA含量、微波功率和固定化pH. 该固定化酶的最适反应pH为7.0,最适反应温度为75℃,热稳定性优于游离酶和未加入BSA的固定化酶,80℃下热处理3 h,剩余活力仍为初始活力的88.2%.
The mesenchymal stem cells in multiple sclerosis (MSCIMS) trial protocol and baseline cohort characteristics: an open-label pre-test: post-test study with blinded outcome assessments
Peter Connick, Madhan Kolappan, Rickie Patani, Michael A Scott, Charles Crawley, Xiao-Ling He, Karen Richardson, Kelly Barber, Daniel J Webber, Claudia AM Wheeler-Kingshott, Daniel J Tozer, Rebecca S Samson, David L Thomas, Ming-Qing Du, Shi L Luan, Andrew W Michell, Daniel R Altmann, Alan J Thompson, David H Miller, Alastair Compston, Siddharthan Chandran
Trials , 2011, DOI: 10.1186/1745-6215-12-62
Abstract: MSCIMS is a phase IIA study of autologous mesenchymal stem cells (MSCs) in secondary progressive MS. A pre-test : post-test design is used with healthy controls providing normative data for inter-session variability. Complementary eligibility criteria and outcomes are used to select participants with disease affecting the anterior visual pathway.Ten participants with MS and eight healthy controls were recruited between October 2008 and March 2009. Mesenchymal stem cells were successfully isolated, expanded and characterised in vitro for all participants in the treatment arm.In addition to determining the safety and feasibility of the intervention and informing design of future studies to address efficacy, MSCIMS adopts a novel strategy for testing neuroprotective agents in MS - the sentinel lesion approach - serving as proof of principle for its future wider applicability.ClinicalTrials.gov (NCT00395200).Multiple sclerosis (MS) is the commonest neurological cause of disability in young adults, affecting over 1.3 million people worldwide. It is a chronic multifocal and multiphasic immune mediated disorder characterised pathologically by inflammatory demyelination, axonal injury and partial remyelination [1]. Although recent evidence suggests that conventional disease modifying approaches can mitigate demyelination and secondary axonal loss resulting from focal inflammation if given during a narrow therapeutic-window in nascent RR-MS,[2,3] there are currently no therapies that slow, stop, or reverse progressive axonal loss in established disease. Mesenchymal stem cells (MSCs) are recognised as a candidate in this respect due to evidence that they promote oligodendrogenesis both in vitro and in vivo,[4,5] result in functional improvement in animal models of MS,[6,7] and confer benefit in non-neurological T-cell driven autoimmune human disease [8].Trial design for the assessment of putative neuroprotective agents in MS presents a range of challenges including the need t
Invasive breast cancer induces laminin-332 upregulation and integrin β4 neoexpression in myofibroblasts to confer an anoikis-resistant phenotype during tissue remodeling
Baek Kim, Ming-Qing Gao, Yoon Choi, Suki Kang, Haeng Park, Kyu Kang, Nam Cho
Breast Cancer Research , 2012, DOI: 10.1186/bcr3203
Abstract: Three types of fibroblasts were isolated from the tumor burden, the fibrosis, and normal tissue of patients with early stage IDC (less than 10 mm diameter), designated cancer-associated fibroblasts (CAFs), interface fibroblasts (InFs), and normal breast fibroblasts (NBFs), respectively. To investigate direct and indirect crosstalk with tumor cells, fibroblasts were co-cultured with invasive MDA-MB-231 or noninvasive MCF7 cells or in conditioned medium. Anoikis resistance of fibroblasts was measured by cell viability and caspase-3 activity after incubation on poly-HEMA coated plates for 72 hours. Involvement of laminin-332/integrin α3β1 or α6β4 signaling in anoikis resistance was confirmed by treatment with purified laminin-332 or blocking antibodies against laminin-332, integrin β1, or integrin β4.MDA-MB-231 cells induced laminin-332 upregulation and integrin β4 neoexpression in fibroblasts, leading to anoikis resistance. InFs showed a higher endogenous level of laminin-332 than did CAFs and NBFs. After stimulation with MDA-MB-231-conditioned medium, laminin-332 expression of InFs was dramatically increased and maintained under anoikis conditions. Laminin-332 upregulation was also observed in CAFs and NBFs, but at a lower level than in InFs. Laminin-332 induced Akt (Ser473) phosphorylation by binding to integrin α3β1. Integrin β4 neoexpression induced laminin-332-independent Rac1 activation and promoted anoikis resistance in fibroblasts approximately twofold more effectively than did laminin-332, regardless of the type of fibroblast. In addition, integrin β4 expression suppressed fibroblast aggregation in conditions of anoikis.Invasive breast cancer cells confer an anoikis-resistant phenotype on myofibroblasts during tissue remodeling by inducing laminin-332 upregulation and integrin β4 neoexpression. Interface fibroblasts appear to be the primary myofibroblasts that interact with invasive tumor cells during tissue remodeling.A fundamental component of tumor invasio
Studies on organic binders with high infrared transparency
Fu Cheng-Wu,Zhou Hao-Shen,Chen Ming-Qing,
中国物理 B , 2009,
Abstract: This paper reports that two kinds of polymers with high infrared transparency and good mechanical and physical properties have been prepared. An internal standard method is used to evaluate the infrared transparency of the binders. The physical and mechanical properties of the binders are measured according to corresponding standards. The results show the absorbance of polymer A in 8--14~$\mu $m range is 26{\%} that of the ethylene-vinyl acetate copolymer (EVA), and polymer B is 9{\%} that of the EVA correspondingly. The film of polymer A shows good flexibility of above 1~mm, a hardness of grade 1, and adhesion of grade 2. The film of polymer B shows good flexibility of above 1~mm, a hardness of grade 1, and adhesion of grade 1.
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