Ming Zhang

Xi'an Jiaotong University, Ch’ang-an, Shaanxi, China

Are you Ming Zhang?

Claim your profile

Publications (118)305.26 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Background: D-dimer is a manifestation of endogenous fibrinolytic activity and associated with inflammation process. Despite chronic obstructive pulmonary disease (COPD) is a chronic inflammatory disease characterized by a hypercoagulable state, D-dimer levels in COPD patients are still conflicting. Methods: Forty-three participants were investigated at admission for an acute exacerbation of COPD, and reassessed when stable. Forty-three controls were matched for age, gender, body mass index, smoking index, comorbidities and medication use. Participants underwent pulmonary function and laboratory testing, including the measurements of D-dimer and high-sensitivity C-reactive protein (hsCRP). Results: The median of D-dimer was 2839μg/l (IQR: 2078-4389μg/l) and 1799μg/l (IQR: 1205-2196μg/l) in exacerbated and stable COPD patients respectively. The median of D-dimer in the control subjects was 433μg/l (IQR: 369-456μg/l). D-dimer level was significantly increased in stable COPD patients compared with healthy controls, and further increased in those patients with an acute exacerbation (both P<0.001). D-dimer was positively correlated with the well-known inflammatory marker hsCRP both in the exacerbated and stable phases of COPD (r=0.392 P=0.009 and r=0.411 P=0.006, respectively), and negatively correlated with FEV1% predicted and FEV1/FVC in stable COPD (r=-0.409 P=0.006 and r=-0.343 P=0.024, respectively). Conclusions: D-dimer is increased in COPD patients, and could be considered as an inflammatory marker for the assessment of inflammation in the progression of COPD.
    No preview · Article · Jan 2016 · Clinica chimica acta; international journal of clinical chemistry
  • [Show abstract] [Hide abstract]
    ABSTRACT: Chronic obstructive pulmonary disease (COPD) is a common chronic inflammatory disease with high morbidity and mortality rates. Cystatin C (Cys C) is a sensitive indicator for various chronic inflammatory diseases. In this study, we aimed to evaluate the role of Cys C in COPD patients comparing with the other well-known inflammatory markers. Ninety patients with acute exacerbated COPD were studied and were reassessed when convalescent. Ninety controls were matched for age, gender, body mass index, smoking index, and comorbidity. Serum Cys C was significantly increased in convalescent COPD patients compared with healthy controls and further increased in COPD patients with an acute exacerbation. Serum Cys C was positively correlated with hsCRP both in the exacerbation and convalescence periods of COPD and negatively correlated with FEV1% predicted and FEV1/FVC in the convalescent COPD patients. In conclusion, serum Cys C is a positive acute-phase reactant in COPD patients and might indicate systemic inflammation during the progression of COPD.
    No preview · Article · Nov 2015 · Inflammation
  • [Show abstract] [Hide abstract]
    ABSTRACT: Background/aims: Previous studies reported that integrated information in the brain ultimately determines the subjective experience of patients with chronic pain, but how the information is integrated in the brain connectome of functional dyspepsia (FD) patients remains largely unclear. The study aimed to quantify the topological changes of the brain network in FD patients. Methods: Small-world properties, network efficiency and nodal centrality were utilized to measure the changes in topological architecture in 25 FD patients and 25 healthy controls based on functional magnetic resonance imaging. Pearson's correlation assessed the relationship of each topological property with clinical symptoms. Results: FD patients showed an increase of clustering coefficients and local efficiency relative to controls from the perspective of a whole network as well as elevated nodal centrality in the right orbital part of the inferior frontal gyrus, left anterior cingulate gyrus and left hippocampus, and decreased nodal centrality in the right posterior cingulate gyrus, left cuneus, right putamen, left middle occipital gyrus and right inferior occipital gyrus. Moreover, the centrality in the anterior cingulate gyrus was significantly associated with symptom severity and duration in FD patients. Nevertheless, the inclusion of anxiety and depression scores as covariates erased the group differences in nodal centralities in the orbital part of the inferior frontal gyrus and hippocampus. Conclusions: The results suggest topological disruption of the functional brain networks in FD patients, presumably in response to disturbances of sensory information integrated with emotion, memory, pain modulation and selective attention in patients.
    No preview · Article · Oct 2015 · Journal of neurogastroenterology and motility
  • [Show abstract] [Hide abstract]
    ABSTRACT: Background: Mean platelet volume (MPV), reflecting the platelet production rate and stimulation, is an inflammatory marker for cardiovascular disease, inflammatory bowel disease, and rheumatoid arthritis. However, the associations between MPV and chronic obstructive pulmonary disease (COPD) are not in agreement. Methods: Ninety participants with an exacerbation of COPD were investigated, and were reassessed when convalescent. Ninety controls were matched for age, gender, body mass index, smoking index, and medication use. Blood samples were collected for measurements of MPV and other laboratory data, and pulmonary function was also assessed. Results: MPV is significantly increased in convalescent COPD patients compared with healthy controls, and further increased in COPD patients with an acute exacerbation. MPV was positively correlated with high-sensitivity C-reactive protein both in the exacerbation and convalescence periods of COPD, and negatively correlated with FEV1% predicted and FEV1/FVC in the convalescent COPD patients. Conclusions: MPV may be regarded as a quick and reliable tool in the assessment of inflammatory response in the progression of COPD.
    No preview · Article · Oct 2015 · Clinica chimica acta; international journal of clinical chemistry
  • Ming Zhang · Qiuhong Zhang · Mingxia Chen

    No preview · Article · Oct 2015 · Journal of the American College of Cardiology
  • Rui Yan · Hu Shan · Lin Lin · Jiayu Diao · Ming Zhang · Yanhe Zhu · Wuhong Tan · Wei Jin

    No preview · Article · Oct 2015 · Journal of the American College of Cardiology
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Internet Gaming Disorder (IGD) among adolescents has become an important public concern and gained more and more attention internationally. Recent studies focused on IGD and revealed brain abnormalities in the IGD group, especially the prefrontal cortex (PFC). However, the role of PFC-striatal circuits in pathology of IGD remains unknown. Twenty-five adolescents with IGD and 21 age- and gender-matched healthy controls were recruited in our study. Voxel-based morphometric (VBM) and functional connectivity analysis were employed to investigate the abnormal structural and resting-state properties of several frontal regions in individuals with online gaming addiction. Relative to healthy comparison subjects, IGD subjects showed significant decreased gray matter volume in PFC regions including the bilateral dorsolateral prefrontal cortex (DLPFC), orbitofrontal cortex (OFC), anterior cingulate cortex (ACC) and the right supplementary motor area (SMA) after controlling for age and gender effects. We chose these regions as the seeding areas for the resting-state analysis and found that IGD subjects showed decreased functional connectivity between several cortical regions and our seeds, including the insula, and temporal and occipital cortices. Moreover, significant decreased functional connectivity between some important subcortical regions, i.e., dorsal striatum, pallidum, and thalamus, and our seeds were found in the IGD group and some of those changes were associated with the severity of IGD. Our results revealed the involvement of several PFC regions and related PFC-striatal circuits in the process of IGD and suggested IGD may share similar neural mechanisms with substance dependence at the circuit level.
    Full-text · Article · Aug 2015 · Brain Imaging and Behavior
  • [Show abstract] [Hide abstract]
    ABSTRACT: Extraction of regions of interest plays an important rule in computer aided lung nodules detection. However, because of the complex background and structure, accurate and robust extraction of ROIs in medical image still remains a problem. Aim at this problem, a two-stage operations joint filter: Hessian-LoB, is proposed. The first stage is blobs (which being taken as candidate ROIs) detection and the second stage is ROIs extraction. In the first stage, the derivatives of a Hessian matrix at multiple scales are convolved with input images to localize blobs. Then in the second stage, Laplacian of bilateral filter (LoB) is convolved with the detected blobs to extract the final ROIs. Experiments show that the proposed filter can deal with images with noise and low brightness contrast, and is effectively in ROI extraction for lung nodule detection.
    No preview · Article · Aug 2015 · Bio-medical materials and engineering
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Objective: Most prostate cancers originate from the prostatic peripheral zone (PZ). We tested the hypothesis that the stromal cells from PZ and transitional zone (TZ) have differential effects on the ability of tumorigenesis. Methods: Stromal cells isolated from the PZ and TZ of normal human prostates mixed with DU145 cells subcutaneously injected into athymic nude mice. The volume and weight of tumors was measured and analyzing the ability of purified DU145 cells isolated from the tumors to migrate and proliferate. The expression patterns of stem cell-specific genes of these DU145 cells were examined. The C-Kit inhibitor, imatinib mesylate, was administrated to confirm the effect of stromal cells on the tumorigenesis. Results: The volume and weight of tumors were significantly higher in mice transplanted with DU145 and stromal cells from PZ. In contrast, the data was significantly lower with DU145 and stromal cells from TZ than DU145 alone. The purified DU145 cells isolated from the tumors with DU145 and stromal cells in PZ had increased ability to migrate and proliferate, and had increased expression of C-Kit. These effects of the stromal cells in the PZ on DU145 cells could be blocked using imatinib mesylate. Conclusions: Human stromal cells in the PZ promote the in vivo tumorigenesis of DU145 through up-regulating C-Kit; in contrast, the stromal cells in the TZ inhibit it through down-regulating the expression of C-Kit. The model will be useful for understanding the mechanisms by which the prostatic stem cell niche controls the tumorigeneis of prostatic cancer stem cells.
    Preview · Article · Jul 2015 · Journal of Cancer
  • Cui Ping Mao · Ming Zhang · Chen Niu · Min Li · Yuan Wang
    [Show abstract] [Hide abstract]
    ABSTRACT: Typical carcinoid is a rare tumor among other neuroendocrine neoplasms that occur in the nasal cavity. Only a few cases of typical carcinoids in the nasal cavity have been reported. We report a case of typical carcinoid of the nasal cavity in a 61-year-old man who had a history of persistent nasal obstruction and epistaxis for approximately 17 years. Computed tomography revealed a huge, lobulated mass in the nasal cavity with extension into the posterior sphenoid sinus. Extensive bone destruction could be seen in the neighboring sphenoid sinus. MR imaging suggested that the tumor was close to the dura. The final histologic evaluation of the excised biopsy specimen yielded a diagnosis of a well-differentiated neuroendocrine neoplasm (typical carcinoid). In this article, the relevant reports in the literature are reviewed, and the role of radiographic findings on tumor diagnosis and on the establishment of a surgery plan is emphasized.
    No preview · Article · Jul 2015 · Ear, nose, & throat journal
  • [Show abstract] [Hide abstract]
    ABSTRACT: To investigated the peripheral stromal cell conditioned medium (CM) -stimulated c-kit-JAK2-STAT1 pathway in prostate cancer. CM harvested from normal prostate peripheral stromal cells was added to DU145 cells. DU145 cell viability and migration were measured by cell counting kit-8 reagent and Transwell analysis respectively. Colony and sphere formation efficiencies of DU145 cells co-cultured with CM from human prostate stromal cells were also measured. DU145cells were stably transfected with lentivirus-mediated shRNA for c-kit silencing. C-kit expression in prostate cancer was found to be significantly higher than in benign prostatic hyperplasia and positively associated with Gleason scores. The growth, migration and capacity of clonogenic property of DU145 cells significantly increased upon exposure to peripheral stromal CM and then were inhibited after silencing the expression of c-kit. The levels of c-kit, pJAK2 and pSTAT1 were significantly induced by peripheral zone stromal CM compared with controls in serum free medium and the levels of pJAK2 and pSTAT1 decreased after c-kit silencing. C-kit hyper-expression promotes the development of prostate cancer. The peripheral stromal cell CM stimulated c-kit-JAK2-STAT1 pathway in prostate cancer cell viability, migration, and capacity of clonogenic property. This may lead to a greater understanding of the role of c-kit in prostate cancer and provide a potential therapeutic target for prostate cancer.
    No preview · Article · Jun 2015 · American Journal of Translational Research
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: With advances in tissue engineering, various synthetic and natural biomaterials have been widely used in tissue regeneration of the urinary bladder in rat models. However, reconstructive procedures remain insufficient due to the lack of appropriate scaffolding, which should provide a waterproof barrier function and support the needs of various cell types. To address these problems, we have developed a bilayer scaffold comprising a porous network (silk fibroin [SF]) and an underlying natural acellular matrix (bladder acellular matrix graft [BAMG]) and evaluated its feasibility and potential for bladder regeneration in a rat bladder augmentation model. Histological (hematoxylin and eosin and Masson's trichrome staining) and immunohistochemical analyses demonstrated that the bilayer BAMG-SF scaffold promoted smooth muscle, blood vessel, and nerve regeneration in a time-dependent manner. At 12 weeks after implantation, bladders reconstructed with the BAMG-SF matrix displayed superior structural and functional properties without significant local tissue responses or systemic toxicity. These results demonstrated that the bilayer BAMG-SF scaffold may be a promising scaffold with good biocompatibility for bladder regeneration in the rat bladder augmentation model. Copyright © 2015. Published by Elsevier Ltd.
    Preview · Article · Jun 2015 · Acta biomaterialia
  • [Show abstract] [Hide abstract]
    ABSTRACT: The objective of this study was to investigate whether intraperitoneal incubation improves the regenerative capacity of bladder acellular matrix grafts (BAMGs) in a rat model of bladder augmentation. After 2 weeks of incubation in the peritoneum of male rats, BAMG flaps with vascular pedicles were harvested for autologous bladder augmentation. As the control, BAMGs were directly used for bladder augmentation without intraperitoneal incubation. Histological analyses of the incubated BAMGs demonstrated extensive cell growth and vasculature in homogeneous collagen bundles. The cells were positive for vimentin and negative for α-smooth muscle actin and pan-cytokeratin AE1/AE3. Cystography revealed smoother contours of the augmented bladders in the incubated group at 4 and 12 weeks postoperatively. However, the bladder capacity was not significantly different between the two groups. In both groups, the entire urothelium regenerated well without obvious differences. At both time points, compared with the control group, increased numbers of smooth muscle cells (SMCs) and blood vessels were found in the incubated group. At 12 weeks, the SMCs in the incubated group were more similar to those in the native smooth muscle fiber bundles of the bladder. Taken together, our results demonstrated that BAMGs preincubated in the peritoneum promote the regeneration of bladder smooth muscle via neovascularization in a rat bladder augmentation model. © 2015, The Korean Society for Biotechnology and Bioengineering and Springer-Verlag Berlin Heidelberg.
    No preview · Article · Jun 2015 · Biotechnology and Bioprocess Engineering
  • Ming Zhang · Shengli Ma · Kewei Xu · Long Bai · Paul K. Chu
    [Show abstract] [Hide abstract]
    ABSTRACT: Ti–Si–N coatings are synthesized on titanium alloy (Ti6Al4V) by arc-enhanced magnetron sputtering and the microstructure and tribological properties are determined. The friction coefficient of the Ti–Si–N coatings, which is smaller in human serum than ambient air, decreases gradually with Si contents. Protein gel electrophoresis shows that the small friction coefficient is due to adsorbed proteins from the human serum under sliding conditions. The cytocompatibility of the coatings is assessed in vitro by a relative nitrite assay. The Ti–Si–N coatings have a positive effect on nitric oxide synthesis on the endothelial cells. The cell morphology and spreading on the coatings are examined by fluorescence staining. The Ti–Si–N coating with 12 at% Si exhibits the best effects in promoting actin cytoskeleton formation and cell spreading compared to coatings with different Si contents and titanium alloy.
    No preview · Article · May 2015 · Vacuum
  • Hu Shan · Rui Yan · Jiayu Diao · Lin Lin · Suqin Wang · Ming Zhang · Rong Zhang · Jin Wei
    [Show abstract] [Hide abstract]
    ABSTRACT: Keshan disease is an endemic dilated cardiomyopathy (DCM) which is closely related with selenium-deficient diet in China. In the previous study, we reported that the low selenium status plays a pivotal role in the myocardial apoptosis in the DCM rats, however, the underlying mechanism remains unclear. The present study aimed to determine whether the intrinsic, extrinsic pathways and the upstream regulators were involved in the myocardial apoptosis of selenium deficiency-induced DCM rats. Therefore, the rat model of endemic DCM was induced by a selenium-deficient diet for 12 weeks. Accompanied with significant dilation and impaired systolic function of left ventricle, an enhanced myocardial apoptosis was detected by TUNEL assay. Western blot analysis showed remarkably increased protein levels of cleaved caspase-3, caspase-8, caspase-9, and cytosolic cytochrome c released from the mitochondria. In addition, the immunoreactivities of p53 and Bax were significantly up-regulated, while the anti-apoptotic Bcl-2 family members Bcl-2 and Bcl-XL were down-regulated. Furthermore, appropriate selenium supplement for another 4 weeks could partially reverse all the above changes. In conclusion, the intrinsic, extrinsic pathways and the upstream regulators such as p53, Bax, Bcl-2, and Bcl-XL were all involved in selenium deficiency-induced myocardial apoptosis. Copyright © 2015 Elsevier GmbH. All rights reserved.
    No preview · Article · Apr 2015 · Journal of Trace Elements in Medicine and Biology
  • [Show abstract] [Hide abstract]
    ABSTRACT: Cardiac hypertrophy is a primary pathological change associated with cardiovascular diseases. Dysregulated microRNAs are frequent in cardiovascular diseases and contribute to cardiac hypertrophy by regulating a series of targeted genes. In this study, a rat model of cardiac hypertrophy was created by transverse abdominal aortic constriction, and cardiomyocyte hypertrophy in cultured neonatal rat cardiomyocytes was induced using angiotensin II (AngII) to investigate the role of miR-101 in myocardial hypertrophy. We demonstrated that miR-101 was downregulated in both the transverse abdominal aortic constriction rat model and hypertrophic cardiac myocytes. The overexpression of miR-101 in neonatal rat cardiomyocytes, which was accompanied by a reduced Rab1a level, inhibits 3 cardinal features of cardiomyocyte hypertrophy: fetal gene expression, protein synthesis, and cell enlargement. Conversely, the downregulation of miR-101 reverses these effects. Furthermore, the luciferase reporter system demonstrated that Rab1a is a target gene of miR-101, and the ectopic expression of Rab1a can reverse the cardiomyocyte hypertrophy inhibitory activity of miR-101. Taken together, our findings identify miR-101 as an important regulator in cardiac hypertrophy and implicate the potential application of miR-101 in the therapy of cardiac hypertrophy.
    No preview · Article · Apr 2015 · Journal of cardiovascular pharmacology
  • [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, a prior knowledge guided random walks is proposed. We combine the entropy rate superpixels with dyadic discrete wavelet transform to automatic obtain the coarse area of seeds and non-seeds by rapidly accounting the location of the lung parenchyma and the background in the anatomy. After random walks performed, a curvature-based approach is followed for amending the segmented lung contour. Experiments on a validation database consisting of 23 chest CT scans suggested that the proposed method was superior to other similar methods for lung segmentation on CT scans.
    No preview · Article · Apr 2015 · Journal of Medical Imaging and Health Informatics
  • Ming Zhang · Shengli Ma · Kewei Xu · Paul K. Chu
    [Show abstract] [Hide abstract]
    ABSTRACT: Praseodymium (Pr) is implanted into TiN coatings to improve the corrosion resistance and cytocompatibility in blood plasma. The corrosion resistance of the Pr-doped TiN coatings in blood plasma is improved based on electrochemical measurements. Pr ion implantation dramatically decreases the hemolysis rate of the TiN coatings suggesting their suitability in cardiovascular applications. The viability of vascular endothelial cells seeded on the untreated TiN coatings and two Pr implanted TiN coatings implanted for different time is assessed. The vascular endothelial cell attach and grow to confluence on the Pr implanted TiN coatings and a network composed of vascular tissues is observed from the 0.5 h Pr implanted coatings. The results suggest that Pr ion implantation can effectively improve the corrosion resistance as well as cytocompatibility of TiN coatings in blood plasma.
    No preview · Article · Apr 2015 · Vacuum
  • Source

    Full-text · Dataset · Mar 2015
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Sleep deprivation (SD) adversely affects brain function and is accompanied by frequency dependent changes in EEG. Recent studies have suggested that BOLD fluctuations pertain to a spatiotemporal organization with different frequencies. The present study aimed to investigate the frequency-dependent SD-related brain oscillatory activity by using the amplitude of low-frequency fluctuation (ALFF) analysis. The ALFF changes were measured across different frequencies (Slow-4: 0.027-0.073 Hz; Slow-5: 0.01-0.027 Hz; and Typical band: 0.01-0.08 Hz) in 24 h SD as compared to rested wakeful during resting-state fMRI. Sixteen volunteers underwent two fMRI sessions, once during rested wakefulness and once after 24 h of SD. SD showed prominently decreased ALFF in the right inferior parietal lobule (IPL), bilateral orbitofrontal cortex (OFC) and dorsolateral prefrontal cortex (DLPFC), while increased ALFF in the visual cortex, left sensorimotor cortex and fusiform gyrus. Across the Slow-4 and Slow-5, results differed significantly in the OFC, DLPFC, thalamus and caudate in comparison to typical frequency band; and Slow-4 showed greater differences. In addition, negative correlations of behavior performance and ALFF patterns were found mainly in the right IPL across the typical frequency band. These observations provided novel insights about the physiological responses of SD, identified how it disturbs the brain rhythms, and linked SD with frequency-dependent alterations in amplitude patterns.
    Full-text · Article · Mar 2015 · PLoS ONE

Publication Stats

776 Citations
305.26 Total Impact Points

Institutions

  • 2010-2015
    • Xi'an Jiaotong University
      • State Key Laboratory for Mechanical Behavior of Materials
      Ch’ang-an, Shaanxi, China
  • 2009-2015
    • Shanghai Jiao Tong University
      • • Department of Medical Imaging and Informatics
      • • Bio-X Institute
      Shanghai, Shanghai Shi, China
    • Shanghai University
      • • Department of Urology
      • • Department of Surgery
      Shanghai, Shanghai Shi, China
  • 2014
    • City University of Hong Kong
      • Department of Physics and Materials Science
      Chiu-lung, Kowloon City, Hong Kong
  • 2013-2014
    • The University of Hong Kong
      Hong Kong, Hong Kong
    • Shanghai University of Traditional Chinese Medicine
      Shanghai, Shanghai Shi, China
    • Changhai Hospital, Shanghai
      Shanghai, Shanghai Shi, China