Li R.,The Peoples Hospital Of Baoji City |
Chen J.-R.,Baoji Central Hospital
Therapeutics and Clinical Risk Management | Year: 2016
Purpose: The purpose of this study is to evaluate the therapeutic efficacy and safety of stem cells for the treatment of patients with ST-segment elevation myocardial infarction (STEMI). Materials and methods: We performed a systematic review and meta-analysis of relevant published clinical studies. A computerized search was conducted for randomized controlled trials of stem cell therapy for STEMI. Results: Twenty-eight randomized controlled trials with a total of 1,938 STEMI patients were included in the present meta-analysis. Stem cell therapy resulted in an improvement in long-term (12 months) left ventricular ejection fraction of 3.15% (95% confidence interval 1.01–5.29, P<0.01). The 3-month to 4-month, 6-month, and 12-month left ventricular end-systolic volume showed favorable results in the stem cell therapy group compared with the control group (P≤ 0.05). Significant decrease was also observed in left ventricular end-diastolic volume after 3-month to 4-month and 12-month follow-up compared with controls (P<0.05). Wall mean score index was reduced significantly in stem cell therapy group when compared with the control group at 6-month and 12-month follow-up (P=0.01). Moreover, our analysis showed a significant change of 12-month infarct size decrease in STEMI patients treated with stem cells compared with controls (P<0.01). In addition, no significant difference was found between treatment group and control in adverse reactions (P>0.05). Conclusion: Overall, stem cell therapy is efficacious in the treatment of patients with STEMI, with low rates of adverse events compared with control group patients. © 2016 Li et al.
Jia S.,PLA Fourth Military Medical University |
Liu L.,Baoji Central Hospital |
Pan W.,Xi'an Physical Education University |
Meng G.,PLA Fourth Military Medical University |
And 4 more authors.
Journal of Bioscience and Bioengineering | Year: 2012
The structure of a cartilage scaffold is required to mimic native articular cartilage, which has an oriented structure associated with its mechanical function. In this study, an oriented cartilage extracellular matrix (ECM)-derived scaffold was fabricated composed of microtubules arranged in parallel in vertical section. The mechanical property was higher than that of a typical non-oriented scaffold (. p<. 0.05). Oriented and non-oriented scaffolds were seeded with chondrogenic-induced bone mesenchymal stem cells and cell-scaffold constructs were implanted subcutaneously in the dorsa of nude mice. At 4. weeks, all samples stained positive for safranin O, toluidine blue, and collagen type II, but negative for collagen type I. Oriented-structure constructs contained numerous parallel giant bundles of densely packed collagen fibers with chondrocyte-like cells aligned along the fibers. Total DNA, glycosaminoglycans and collagen contents increased with time and these values were similar in the two groups. Compared with the native articular cartilage, the Young's modulus of the tissue-engineered (TE) cartilage reached 42.9%, 23.0% in oriented and non-oriented scaffolds respectively, at 4. weeks. These results indicate that oriented ECM-derived scaffolds enhance the biomechanical property of TE cartilage and thus represent a promising approach to cartilage tissue engineering. © 2011 The Society for Biotechnology, Japan.
Chen L.,George Washington University |
Li Y.,Baoji Central Hospital |
Fu Y.,George Washington University |
Peng J.,George Washington University |
And 9 more authors.
PLoS ONE | Year: 2013
MicroRNAs (miRNAs) contribute to cancer initiation and progression by silencing the expression of their target genes, causing either mRNA molecule degradation or translational inhibition. Intraductal epithelial proliferations of the breast are histologically and clinically classified into normal, atypical ductal hyperplasia (ADH), ductal carcinoma in situ (DCIS) and invasive ductal carcinoma (IDC). To better understand the progression of ductal breast cancer development, we attempt to identify deregulated miRNAs in this process using Formalin-Fixed, Paraffin-Embedded (FFPE) tissues from breast cancer patients. Following tissue microdissection, we obtained 8 normal, 4 ADH, 6 DCIS and 7 IDC samples, which were subject to RNA isolation and miRNA expression profiling analysis. We found that miR-21, miR-200b/c, miR-141, and miR-183 were consistently up-regulated in ADH, DCIS and IDC compared to normal, while miR-557 was uniquely down-regulated in DCIS. Interestingly, the most significant miRNA deregulations occurred during the transition from normal to ADH. However, the data did not reveal a step-wise miRNA alteration among discrete steps along tumor progression, which is in accordance with previous reports of mRNA profiling of different stages of breast cancer. Furthermore, the expression of MSH2 and SMAD7, two important molecules involving TGF-β pathway, was restored following miR-21 knockdown in both MCF-7 and Hs578T breast cancer cells. In this study, we have not only identified a number of potential candidate miRNAs for breast cancer, but also found that deregulation of miRNA expression during breast tumorigenesis might be an early event since it occurred significantly during normal to ADH transition. Consequently, we have demonstrated the feasibility of miRNA expression profiling analysis using archived FFPE tissues, typically with rich clinical information, as a means of miRNA biomarker discovery. © 2013 Chen et al.
Niu X.,Xi'an Jiaotong University |
Cao W.,Xi'an Jiaotong University |
Ma H.,Xi'an Jiaotong University |
Feng J.,Xi'an Jiaotong University |
And 2 more authors.
Journal of Dermatology | Year: 2012
T-helper (Th) cells, including Th1, Th2 and Th17 cells, may play an important role in the pathogenesis of psoriasis vulgaris (PV). Acitretin is an effective treatment for PV; however, its influence on Th cells during the treatment of PV is unclear. This study aimed to investigate the influence of acitretin on Th1, Th2 and Th17 cells in PV patients. PV patients (n = 30) received acitretin p.o. (20 mg/day) for 8 weeks. Sera and skin biopsies were obtained before and after treatment. Double-labeled immunofluorescence was used to analyze T, Th1, Th2 and Th17 cells in skin lesions. Enzyme-linked immunosorbent assay and western blot were used to analyze the expressions of interferon (IFN)-γ, interleukin (IL)-4 and IL-17 in sera and skin lesions. The expressions of IFN-γ mRNA, IL-4 mRNA and IL-17 mRNA in skin lesions were detected by in situ hybridization. Acitretin decreased the quantity of T, Th1 and Th17 cells in PV lesions, but had no significant influence on Th2 cells. Acitretin also decreased the expression of IFN-γ and IL-17 in serum and lesions. The expressions of IFN-γ mRNA and IL-17 mRNA decreased significantly after 8 weeks of therapy. However, acitretin had no significant influence on the expression of IL-4 protein and mRNA. Acitretin can reverse Th1 and Th17 preponderance in PV patients to some degree. This may be due to the mechanism of acitretin on PV; however, Th2 cells were not affected by acitretin treatment. © 2012 Japanese Dermatological Association.
PubMed | Baoji Central Hospital and Xi'an Jiaotong University
Type: | Journal: Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine | Year: 2016
Liver biopsy remains the reference standard for the assessment of liver fibrosis, but this procedure is invasive and can lead to complications. Thus, studies to determine the optimal noninvasive test are warranted. This study compared several noninvasive tests and their combinations for evaluating liver fibrosis stages in patients with chronic hepatitis B.The shear wave velocity (SWV) and laboratory indicators were collected from 174 patients with chronic hepatitis B. Formulas were applied to calculate the serum fibrosis model, including the aspartate aminotransaminase-to-platelet ratio index (APRI), fibrosis-4 index (FIB-4) and aspartate aminotransferase-to-alanine aminotransferase ratio (AAR). The diagnostic performance of all noninvasive tests was assessed in comparison with percutaneous liver biopsy, based on a receiver operating characteristic curve analysis.The SWV (area under the receiver operating characteristic curve [AUC], 0.82) and APRI (AUC=0.77) performed better than the FIB-4 (AUC=0.62), and the AAR (AUC=0.47) was not suitable for evaluating substantial liver fibrosis (stage F2). The SWV (AUC=0.96) was the best indicator, being superior to the APRI (AUC=0.75) and FIB-4 (AUC=0.74), and the AAR (AUC=0.45) was not suitable for assessing cirrhosis (F4). Combining the SWV and APRI, the AUC improved to 0.85 for substantial liver fibrosis, and the sensitivity increased to 100% for cirrhosis.The SWV, APRI, and FIB-4 were valid tests for evaluating substantial liver fibrosis and cirrhosis. The combination of these tests with several noninvasive indicators is expected to enhance the assessment of liver fibrosis stages.
PubMed | Baoji Central Hospital and Xi'an Jiaotong University
Type: Journal Article | Journal: Korean journal of radiology | Year: 2016
To compare several noninvasive indices of fibrosis in chronic viral hepatitis B, including liver shear-wave velocity (SWV), hyaluronic acid (HA), collagen type IV (CIV), procollagen type III (PCIII), and laminin (LN).Acoustic radiation force impulse (ARFI) was performed in 157 patients with chronic viral hepatitis B and in 30 healthy volunteers to measure hepatic SWV (m/s) in a prospective study. Serum markers were acquired on the morning of the same day of the ARFI evaluation. Receiver operating characteristic (ROC) analysis was performed to evaluate and compare the accuracies of SWV and serum markers using METAVIR scoring from liver biopsy as a reference standard.The most accurate test for diagnosing fibrosis F 1 was SWV with the area under the ROC curve (AUC) of 0.913, followed by LN (0.744), HA (0.701), CIV (0.690), and PCIII (0.524). The best test for diagnosing F 2 was SWV (AUC of 0.851), followed by CIV (0.671), HA (0.668), LN (0.562), and PCIII (0.550). The best test for diagnosing F 3 was SWV (0.854), followed by CIV (0.693), HA (0.675), PCIII (0.591), and LN (0.548). The best test for diagnosing F = 4 was SWV (0.965), followed by CIV (0.804), PCIII (0.752), HA (0.744), and LN (0.662). SWV combined with HA and CIV did not improve diagnostic accuracy (AUC = 0.931 for F 1, 0.863 for F 2, 0.855 for F 3, 0.960 for F = 4).The performance of SWV in diagnosing liver fibrosis is superior to that of serum markers. However, the combination of SWV, HA, and CIV does not increase the accuracy of diagnosing liver fibrosis and cirrhosis.
Wu Z.-X.,PLA Fourth Military Medical University |
Gong F.-T.,Xian Hospital of Traditional Chinese Medicine |
Liu L.,Baoji Central Hospital |
Ma Z.-S.,PLA Fourth Military Medical University |
And 5 more authors.
Archives of Orthopaedic and Trauma Surgery | Year: 2012
Introduction The aim of this study is to compare the rate of screw loosening and clinical outcomes of expandable pedicle screws (EPS) with those of conventional pedicle screws (CPS) in patients treated for spinal stenosis (SS) combined with osteoporosis. Methods One hundred and fifty-seven consecutive patients with SS received either EPS fixation (n = 80) or CPS fixation (n = 77) to obtain lumbosacral stabilization. Patients were observed for a minimum of 24 months. Outcome measures included screw loosening, fusion rate, Japanese Orthopaedic Association (JOA) scores and Oswestry disability index (ODI) scoring system, and complications. Results In the EPS group, 20 screws became loose (4.1%) in 6 patients (7.5%), and two screws (0.4%) had broken. In the CPS group, 48 screws became loose (12.9%) in 15 patients (19.5%), but no screws were broken. The fusion rate in the EPS group (92.5%) was significantly higher than that of the CPS group (80.5%). The rate of screw loosening in the EPS group (4.1%) was significantly lower than that of the CPS group (12.9%). Six EPS (1.8%) screws were removed. In the EPS group, two screws had broken but without neural complications. Twelve months after surgeries, JOA and ODI scores in the EPS group were significantly improved. There were four cases of dural tears, which healed after corresponding treatment. Conclusions EPS can decrease the risk of screw loosening and achieve better fixation strength and clinical results in osteoporotic lumbar spine fusion. © 2011 Springer-Verlag.
Liu J.,PLA Fourth Military Medical University |
Yao Y.,Baoji Central Hospital |
Ding H.,Shengli Oilfield Central Hospital |
Chen R.,PLA Fourth Military Medical University
Tumor Biology | Year: 2014
With the objective of identifying promising antitumor agents for human leukemia, we carried out to determine the anticancer ability of oxymatrine on the human leukemia HL-60 cell line. In vitro experiments demonstrated that oxymatrine reduced the proliferation of HL-60 cells in a dose- and time-dependent manner via the induction of apoptosis and cell cycle arrest at G2/M and S phases. The proteins involved in oxymatrine-induced apoptosis in HL-60 cells were also examined using Western blot. The increase in apoptosis upon treatment with oxymatrine was correlated with downregulation of anti-apoptotic Bcl-2 expression and upregulation of pro-apoptotic Bax expression. Furthermore, oxymatrine induced the activation of caspase-3 and caspase-9 and the cleavage of poly(ADP-ribose) polymerase (PARP) in HL-60 cells. In addition, pretreatment with a specific caspase-3 (Z-DEVD-FMK) or caspase-9 (Z-LEHD-FMK) inhibitor significantly neutralized the pro-apoptotic activity of oxymatrine in HL-60 cells, demonstrating the important role of caspase-3 and caspase-9 in this process. Taken together, these results indicated that oxymatrine-induced apoptosis may occur through the activation of the caspase-9/caspase-3-mediated intrinsic pathway. Therefore, oxymatrine may be a potential candidate for the treatment of human leukemia. © 2014 International Society of Oncology and BioMarkers (ISOBM).
Wan J.,General Hospital of Lanzhou |
Xia L.,Baoji Central Hospital |
Liang W.,General Hospital of Lanzhou |
Liu Y.,General Hospital of Lanzhou |
Cai Q.,General Hospital of Lanzhou
Journal of Diabetes Research | Year: 2013
In this paper, we established a delayed wound healing model on diabetic rat to mimic the pathophysiology of clinical patients who suffered from diabetic foot ulcers. We also evaluated if transplantation of allogeneic bone marrow-derived mesenchymal stem cells could promote the delayed wound healing and investigated the possible underlying biological mechanisms and stem cell behavior involved in this process. The results showed that bone marrow-derived mesenchymal stem cells had a positive effect on delayed wound healing in diabetic rats. Intramuscular transplantation demonstrated the best efficacy. This effect is associated with granulation tissue formation, angiogenesis, cellular proliferation, and high vascular endothelial growth factor expression in wound tissues. In addition, bone marrow-derived mesenchymal stem cells have been shown to mobilize and find home for ischemic and wounded tissues to participate in the process of wound healing. Intramuscular transplantation of exogenous isogeneic stem cells may be suitable for clinical application in the treatment of diabetic foot ulcers although the safety of this therapy should be considered. © 2013 Jiangbo Wan et al.
PubMed | Baoji Central Hospital
Type: Journal Article | Journal: European review for medical and pharmacological sciences | Year: 2016
This work aimed to identify disturbed pathways in hepatitis C virus (HCV)-cirrhosis with hepatocellular carcinoma (HCC) based on individualized pathway aberrance score (iPAS) method.First of all, gene expression data and pathway data were recruited and preprocessed. Next, iPAS method, which contained three steps (gene-level statistics based on average Z algorithm, pathway-level statistics and pathway significant analysis based on Wilcoxon-test), was performed to identify differential pathways in HCV-cirrhosis with HCC. Then, a protein-protein interaction (PPI) network was conducted based on the genes enriched in the differential pathways. Finally, topological analysis of the PPI network combined with cancer genes was conducted to identify hub disease genes.After a systematic operation by the iPAS method, a total of 34 differential pathways were identified (p-value < 0.01). From the PPI network that was constructed using the 243 genes in the differential pathways, a total of 24 hub genes were obtained by conducting degree centrality, and 4 hub cancer genes (UBC, MAPK1, NOTCH1 and RHOA) were identified. An in-depth analysis indicated that NF-kB is activated and signals survival pathway contained the most cancer genes (number = 7), in which there was a hub cancer gene UBC. In addition, as we set the p-value in ascending order, we found that opioid signaling pathway was the most significant pathway (p = 1.59E-06), and hub cancer gene MAPK1 was enriched in this pathway.The altered pathways and several key genes identified by this method were predicted to play important roles in HCV-cirrhosis with HCC and might be potentially novel predictive and prognostic markers for HCV-cirrhosis with HCC.