25 results on '"Ye GX"'
Search Results
2. Autosomal Recessive Infantile Hyaline Fibromatosis Identified Using Artificial Intelligence-Assisted Rapid Whole Genome Sequencing: A Rare, Multisystemic, Hereditary Disorder.
- Author
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Ye GX, Ontiveros E, Ivander A, Velinov M, and Simotas C
- Abstract
Infantile hyaline fibromatosis syndrome (HFS) is an ultra-rare genetic condition characterized by the deposition of hyaline material in the skin, muscle, and viscera. Potential complications include debilitating joint contractures, coarse facial features, recurrent infections, failure to thrive, and death. Here, we present the case of a six-month-old infant with a history of painful extremity contractures, global developmental delay, neck hemangioma, and feeding intolerance presenting to our institution with abdominal distension. The multi-systemic, rapidly progressing, severe nature of her symptoms prompted consultation with inpatient pediatric genetics. Per their recommendation, rapid whole-genome sequencing (rWGS) was done with Fabric GEM®-assisted artificial intelligence (Fabric Genomics, Oakland, California, United States) at Rady Children's Hospital Institute for Genomic Medicine (San Diego, California, United States), revealing homozygous pathogenic variant c.652T>C; P.Cys218Arg in the ANTXR2 gene consistent with HFS. This case was significant not only for its rarity, but also its early manifestation of symptoms, wide range of affected body systems, and severity of symptoms, which together present a fascinating diagnostic dilemma for future clinicians that should be taken into consideration. It also highlights the increasing utility of AI-assisted rWGS as a diagnostic tool for medically complex patients with unknown multisystemic hereditary conditions., Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Ye et al.)
- Published
- 2024
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3. Bone age recognition based on mask R-CNN using xception regression model.
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Liu ZQ, Hu ZJ, Wu TQ, Ye GX, Tang YL, Zeng ZH, Ouyang ZM, and Li YZ
- Abstract
Background and Objective: Bone age detection plays an important role in medical care, sports, judicial expertise and other fields. Traditional bone age identification and detection is according to manual interpretation of X-ray images of hand bone by doctors. This method is subjective and requires experience, and has certain errors. Computer-aided detection can effectually enhance the validity of medical diagnosis, especially with the fast development of machine learning and neural network, the method of bone age recognition using machine learning has gradually become the focus of research, which has the advantages of simple data pretreatment, good robustness and high recognition accuracy. Methods: In this paper, the hand bone segmentation network based on Mask R-CNN was proposed to segment the hand bone area, and the segmented hand bone region was directly input into the regression network for bone age evaluation. The regression network is using an enhancd network Xception of InceptionV3. After the output of Xception, the convolutional block attention module is connected to refine the feature mapping from channel and space to obtain more effective features. Results: According to the experimental results, the hand bone segmentation network model based on Mask R-CNN can segment the hand bone region and eliminate the interference of redundant background information. The average Dice coefficient on the verification set is 0.976. The mean absolute error of predicting bone age on our data set was only 4.97 months, which exceeded the accuracy of most other bone age assessment methods. Conclusion: Experiments show that the accuracy of bone age assessment can be enhancd by using the Mask R-CNN-based hand bone segmentation network and the Xception bone age regression network to form a model, which can be well applied to actual clinical bone age assessment., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Liu, Hu, Wu, Ye, Tang, Zeng, Ouyang and Li.)
- Published
- 2023
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4. WWP2 overexpression inhibits the antitumor effects of doxorubicin in hepatocellular carcinoma.
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Qin Y, Wang CJ, Ye HL, Ye GX, Wang S, Pan DB, Wang J, Shen HJ, and Xu SQ
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- Doxorubicin pharmacology, Doxorubicin therapeutic use, Humans, Methyltransferases metabolism, Proto-Oncogene Proteins c-akt metabolism, RNA-Binding Proteins, Carcinoma, Hepatocellular drug therapy, Liver Neoplasms metabolism, Ubiquitin-Protein Ligases metabolism
- Abstract
Hepatocellular carcinoma (HCC) is a common liver cancer that accounts for 90% of cases. Doxorubicin exhibits a broad spectrum of antitumor activity and is one of the most active agents in HCC. WW domain-containing protein 2 (WWP2) is highly expressed in HCC tissues and activates protein kinase B (AKT) signaling pathway to enhance tumor metastasis. However, the role of WWP2 in the glycolysis and antitumor effects of doxorubicin and the epigenetic alterations of WWP2 in HCC remain to be elucidated. The levels of WWP2 and N6-methyladenosine methyltransferase-like 3 (METTL3) in clinical samples and cells were investigated. WWP2 were silenced or overexpressed to study the role of WWP2 in regulating cell proliferation, colony formation, and glycolysis. RNA immunoprecipitation was performed to test m
6 A levels. Quantitative reverse-transcription polymerase chain reaction (RT-PCR) and Western blot were used to measure mRNA and protein, respectively. WWP2 silencing inhibits cell proliferation, colony formation, and glycolysis, while WWP2 overexpression has the inverse effects via the AKT signaling pathway. Silencing WWP2 enhances doxorubicin's antitumor effect, while WWP2 overexpression suppresses doxorubicin's antitumor effect. Data also support that METTL3 mediates WWP2 m6A modification, and m6A reader, IGF2BP2, binds to the methylated WWP2 to promote the stability of WWP2, leading to upregulation of WWP2. METTL3 mediates WWP2 m6A modification, which can be recognized and bound by IGF2BP2 to increase the stability of WWP2, leading to WWP2 overexpression which inhibits the antitumor effects of doxorubicin through METTL3/WWP2/AKT/glycolysis axis., (© 2022 International Federation for Cell Biology.)- Published
- 2022
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5. [Application of multi-slice spiral CT refarmation reconstruction technique and DR photography of pneumoconiosis patients at stage three].
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Zhang YJ, Zeng FX, Wu TQ, Chen XK, and Ye GX
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- Humans, Photography, Tomography, Spiral Computed, Tomography, X-Ray Computed, Pneumoconiosis diagnostic imaging, Radiographic Image Enhancement
- Abstract
Objective: To investigate the value of CT multiplanar reconstruction (MPR) in the diagnosis of stage Ⅲ pneumoconiosis and complications. Methods: In September 2020, 94 patients with stage Ⅲ pneumoconiosis in Guangzhou 12th people's hospital were selected for digital radiography (DR) and MPR. The detection rate of the number of large shadows and the incidence of related complications were compared and analyzed. The counting data were expressed by frequency and percentage (%) , and the comparison was performed by chi square test. Results: 178 and 132 large shadows were detected in MPR and DR chest films respectively. Compared with Dr examination, MPR had higher detection rates of pneumoconiosis related complications such as pulmonary tuberculosis, emphysema, pleural thickening, adhesion, pneumonia, pleural effusion, enlargement of hilar and mediastinal lymph nodes and calcification ( P <0.05) , There was no significant difference in the detection rate of pulmonary bullae ( P >0.05) . Compared with Dr, MPR had a higher detection rate in the diagnosis of cavity, calcification, bronchiectasis and parascar emphysema ( P <0.05) . Conclusion: MPR is better in detecting large shadow and complications of stage Ⅲpneumoconiosis, and has important value.
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- 2021
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6. Pulmonary immune cell transcriptome changes in double-hit model of BPD induced by chorioamnionitis and postnatal hyperoxia.
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Shrestha D, Ye GX, Stabley D, Betal SGN, Zhu Y, Glazewski L, Holbrook J, Sethi M, Hesek A, Shaffer TH, Aghai ZH, Addya S, and Alapati D
- Subjects
- Animals, Bronchopulmonary Dysplasia etiology, Disease Models, Animal, Female, Humans, Infant, Newborn, Infant, Premature, Pregnancy, Rats, Rats, Sprague-Dawley, Bronchopulmonary Dysplasia genetics, Chorioamnionitis pathology, Hyperoxia complications, Lung immunology, Transcriptome
- Abstract
Background: Preterm infants with bronchopulmonary dysplasia (BPD) have lifelong increased risk of respiratory morbidities associated with environmental pathogen exposure and underlying mechanisms are poorly understood. The resident immune cells of the lung play vital roles in host defense. However, the effect of perinatal events associated with BPD on pulmonary-specific immune cells is not well understood., Methods: We used a double-hit model of BPD induced by prenatal chorioamnionitis followed by postnatal hyperoxia, and performed a global transcriptome analysis of all resident pulmonary immune cells., Results: We show significant up-regulation of genes involved in chemokine-mediated signaling and immune cell chemotaxis, and down-regulation of genes involved in multiple T lymphocyte functions. Multiple genes involved in T cell receptor signaling are downregulated and Cd8a gene expression remains downregulated at 2 months of age in spite of recovery in normoxia for 6 weeks. Furthermore, the proportion of CD8a+CD3+ pulmonary immune cells is decreased., Conclusions: Our study has highlighted that perinatal lung inflammation in a double-hit model of BPD results in short- and long-term dysregulation of genes associated with the pulmonary T cell receptor signaling pathway, which may contribute to increased environmental pathogen-associated respiratory morbidities seen in children and adults with BPD., Impact: In a translationally relevant double-hit model of BPD induced by chorioamnionitis and postnatal hyperoxia, we identified pulmonary immune cell-specific transcriptomic changes and showed that T cell receptor signaling genes are downregulated in short term and long term. This is the first comprehensive report delineating transcriptomic changes in resident immune cells of the lung in a translationally relevant double-hit model of BPD. Our study identifies novel resident pulmonary immune cell-specific targets for potential therapeutic modulation to improve short- and long-term respiratory health of preterm infants with BPD., (© 2021. The Author(s), under exclusive licence to the International Pediatric Research Foundation, Inc.)
- Published
- 2021
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7. Application of Restriction Site-Associated DNA Sequencing (RAD-Seq) for Copy Number Variation and Triploidy Detection in Human.
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He JC, Li SY, He WZ, Xian JJ, Ma XY, Wang YC, Zhang MC, Ye GX, Liang B, Xia Q, and Li Q
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- Cell Line, High-Throughput Nucleotide Sequencing, Humans, Whole Genome Sequencing, DNA Copy Number Variations genetics, Restriction Mapping, Sequence Analysis, DNA methods, Triploidy
- Abstract
At present, low-pass whole-genome sequencing (WGS) is frequently used in clinical research and in the screening of copy number variations (CNVs). However, there are still some challenges in the detection of triploids. Restriction site-associated DNA sequencing (RAD-Seq) technology is a reduced-representation genome sequencing technology developed based on next-generation sequencing. Here, we verified whether RAD-Seq could be employed to detect CNVs and triploids. In this study, genomic DNA of 11 samples was extracted employing a routine method and used to build libraries. Five cell lines of known karyotypes and 6 triploid abortion tissue samples were included for RAD-Seq testing. The triploid samples were confirmed by STR analysis and also tested by low-pass WGS. The accuracy and efficiency of detecting CNVs and triploids by RAD-Seq were then assessed, compared with low-pass WGS. In our results, RAD-Seq detected 11 out of 11 (100%) chromosomal abnormalities, including 4 deletions and 1 aneuploidy in the purchased cell lines and all triploid samples. By contrast, these triploids were missed by low-pass WGS. Furthermore, RAD-Seq showed a higher resolution and more accurate allele frequency in the detection of triploids than low-pass WGS. Our study shows that, compared with low-pass WGS, RAD-Seq has relatively higher accuracy in CNV detection at a similar cost and is capable of identifying triploids. Therefore, the application of this technique in medical genetics has a significant potential value., (© 2021 S. Karger AG, Basel.)
- Published
- 2021
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8. Theoretical Study on the Aggregation of Copper Clusters on a Liquid Surface.
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Mao HY, Li BX, Ding WF, Zhu YH, Yang XX, Li CY, and Ye GX
- Abstract
The ground state structures of copper clusters with different sizes along with their aggregation have been systematic investigated using Amsterdam Density Functional (ADF) and Atomistix ToolKit (ATK) programs. On the basis of geometry optimization, some Cu clusters with more stable structures which were not reported previously have been revealed. In most cases, these Cu clusters prefer to adopt icosahedral structures which originate from the 13-atom icosahedron. It has also been demonstrated that the interaction between two Cu clusters is anisotropic, which is attributed to their charge distribution, especially the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) of Cu clusters. Moreover, we have carried out the simulation of Cu clusters aggregation on the silicone oil substrate by means of Monte Carlo (MC) method, which shows good consistence with our previous experimental studies.
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- 2019
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9. Calcium-sensing receptor activation attenuates collagen expression in renal proximal tubular epithelial cells.
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Wu M, Feng Y, Ye GX, Han YC, Wang SS, Ni HF, Wang FM, Gao M, Lv LL, and Liu BC
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- Adenine, Animals, Benzamides pharmacology, CRISPR-Cas Systems, Cells, Cultured, Cyclohexylamines pharmacology, Disease Models, Animal, Down-Regulation, Epithelial Cells metabolism, Epithelial Cells pathology, Fibrosis, Humans, Kidney Diseases chemically induced, Kidney Diseases metabolism, Kidney Diseases pathology, Kidney Tubules, Proximal metabolism, Kidney Tubules, Proximal pathology, Male, Phosphorylation, Rats, Wistar, Receptors, Calcium-Sensing genetics, Receptors, Calcium-Sensing metabolism, Smad2 Protein metabolism, Snail Family Transcription Factors metabolism, Transforming Growth Factor beta1 pharmacology, Calcimimetic Agents pharmacology, Cinacalcet pharmacology, Collagen metabolism, Epithelial Cells drug effects, Kidney Diseases prevention & control, Kidney Tubules, Proximal drug effects, Receptors, Calcium-Sensing agonists
- Abstract
316: F1006-F1015, 2019. First published March 6, 2019; doi: 10.1152/ajprenal.00413.2018 .-Experimental studies have shown that pharmacological activation of calcium-sensing receptor (CaSR) attenuates renal fibrosis in some animal models beyond modification of bone and mineral homeostasis; however, its underlying mechanisms remain largely unknown. Since excessive collagen deposition is the key feature of fibrosis, the present study aimed to examine whether CaSR was involved in the regulation of collagen expression in rats with adenine diet-induced renal fibrosis and in profibrotic transforming growth factor (TGF)-β
1 -treated renal proximal tubular epithelial cells (PTECs). The results showed that the CaSR agonist cinacalcet significantly attenuated renal collagen accumulation and tubular injury in adenine diet-fed rats. Additionally, the in vitro experiment showed that profibrotic TGF-β1 significantly increased the expression of collagen and decreased CaSR expression at the mRNA and protein levels in a concentration- and time-dependent manner. Furthermore, the CaSR CRISPR activation plasmid and cinacalcet partially abrogated the upregulation of collagen induced by TGF-β1 treatment. Blockade of CaSR by the CRISPR/Cas9 KO plasmid or the pharmacological antagonist Calhex231 further enhanced TGF-β1 -induced collagen expression. Mechanistic experiments found that Smad2 phosphorylation and Snail expression were markedly increased in PTECs treated with TGF-β1 , whereas the CaSR CRISPR activation plasmid and cinacalcet substantially suppressed this induction. In summary, this study provides evidence for a direct renal tubular epithelial protective effect of CaSR activation in renal fibrosis, possibly through suppression of collagen expression in PTECs.- Published
- 2019
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10. "Perfect" designer chromosome V and behavior of a ring derivative.
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Xie ZX, Li BZ, Mitchell LA, Wu Y, Qi X, Jin Z, Jia B, Wang X, Zeng BX, Liu HM, Wu XL, Feng Q, Zhang WZ, Liu W, Ding MZ, Li X, Zhao GR, Qiao JJ, Cheng JS, Zhao M, Kuang Z, Wang X, Martin JA, Stracquadanio G, Yang K, Bai X, Zhao J, Hu ML, Lin QH, Zhang WQ, Shen MH, Chen S, Su W, Wang EX, Guo R, Zhai F, Guo XJ, Du HX, Zhu JQ, Song TQ, Dai JJ, Li FF, Jiang GZ, Han SL, Liu SY, Yu ZC, Yang XN, Chen K, Hu C, Li DS, Jia N, Liu Y, Wang LT, Wang S, Wei XT, Fu MQ, Qu LM, Xin SY, Liu T, Tian KR, Li XN, Zhang JH, Song LX, Liu JG, Lv JF, Xu H, Tao R, Wang Y, Zhang TT, Deng YX, Wang YR, Li T, Ye GX, Xu XR, Xia ZB, Zhang W, Yang SL, Liu YL, Ding WQ, Liu ZN, Zhu JQ, Liu NZ, Walker R, Luo Y, Wang Y, Shen Y, Yang H, Cai Y, Ma PS, Zhang CT, Bader JS, Boeke JD, and Yuan YJ
- Subjects
- Bacterial Proteins, CRISPR-Associated Protein 9, Chromosomes, Artificial, Yeast genetics, Clustered Regularly Interspaced Short Palindromic Repeats, Endonucleases, Gene Editing, Gene Rearrangement, Meiosis, Models, Genetic, Saccharomyces cerevisiae cytology, Transformation, Genetic, Chromosomes, Artificial, Yeast chemistry, Genome, Fungal, Saccharomyces cerevisiae genetics, Synthetic Biology methods
- Abstract
Perfect matching of an assembled physical sequence to a specified designed sequence is crucial to verify design principles in genome synthesis. We designed and de novo synthesized 536,024-base pair chromosome synV in the "Build-A-Genome China" course. We corrected an initial isolate of synV to perfectly match the designed sequence using integrative cotransformation and clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9)-mediated editing in 22 steps; synV strains exhibit high fitness under a variety of culture conditions, compared with that of wild-type V strains. A ring synV derivative was constructed, which is fully functional in Saccharomyces cerevisiae under all conditions tested and exhibits lower spore viability during meiosis. Ring synV chromosome can extends Sc2.0 design principles and provides a model with which to study genomic rearrangement, ring chromosome evolution, and human ring chromosome disorders., (Copyright © 2017, American Association for the Advancement of Science.)
- Published
- 2017
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11. Silencing of WWP2 inhibits adhesion, invasion, and migration in liver cancer cells.
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Qin Y, Xu SQ, Pan DB, Ye GX, Wu CJ, Wang S, Wang CJ, Jiang JY, and Fu J
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- Animals, Apoptosis genetics, Cell Adhesion genetics, Cell Line, Tumor, Cell Movement genetics, Cell Proliferation, Cell Survival genetics, Chemokines genetics, Chemokines metabolism, Disease Models, Animal, Gene Expression Regulation, Neoplastic, Heterografts, Humans, Liver Neoplasms metabolism, Liver Neoplasms mortality, Liver Neoplasms pathology, Mice, Prognosis, RNA, Messenger genetics, RNA, Small Interfering genetics, Signal Transduction, Gene Silencing, Liver Neoplasms genetics, Ubiquitin-Protein Ligases genetics
- Abstract
The role and clinical implication of the WWP2 E3 ubiquitin ligase in liver cancer are poorly understood. In the current study, we investigated the expression level of WWP2 and its functions in cell adhesion, invasion, and migration in liver cancer. We used real-time PCR to detect the expression of WWP2 in liver cancer and adjacent samples from the People's Hospital of Lishui and also analyzed The Cancer Genome Atlas (TCGA) RNA-seq data by bioinformatics. Migration and invasion were detected by transwell analysis. We detected a strong WWP2 expression in tumor tissues of the People's Hospital of Lishui, and the survival rate was significantly higher in patients with lower WWP2-expressing tumors. WWP2 small hairpin RNA (shRNA) lentivirus stably infected cells (shWWP2), Huh7, showed slower growth speed compared with scramble control-infected cells in a xenograft mouse model. Knockdown of WWP2 Huh7 and BEL-7404 cells demonstrated a reduction in adhesion, invasion, and migration. Gene set enrichment analysis (GSEA) showed that WWP2 is positively correlated to cancer-related pathways including the chemokine signaling pathway. WWP2 also regulated MMP-9, caspase-9, CXCR3, and CCR5 expression in liver cancer cells. In addition, knockdown of CXCR3 and CCR5 significantly inhibited cell proliferation, adhesion, invasion, and migration in Huh7 and BEL-7404 cells. Our data suggest that targeting of WWP2 may be a therapeutic strategy for liver cancer treatment.
- Published
- 2016
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12. Inhibition of WWP2 suppresses proliferation, and induces G1 cell cycle arrest and apoptosis in liver cancer cells.
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Xu SQ, Qin Y, Pan DB, Ye GX, Wu CJ, Wang S, Jiang JY, Fu J, and Wang CJ
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- Adult, Aged, Aged, 80 and over, Biomarkers, Tumor metabolism, Blotting, Western, Cell Line, Tumor, Cell Proliferation, Cell Survival genetics, Female, Gene Expression Regulation, Neoplastic, Gene Knockdown Techniques, Humans, Liver Neoplasms genetics, Male, Middle Aged, RNA, Messenger genetics, RNA, Messenger metabolism, Signal Transduction genetics, Ubiquitin-Protein Ligases genetics, Up-Regulation genetics, Apoptosis genetics, G1 Phase Cell Cycle Checkpoints genetics, Liver Neoplasms pathology, Ubiquitin-Protein Ligases metabolism
- Abstract
Primary liver cancer is one of the most common and aggressive human malignancies worldwide. As numerous studies have revealed that WW domain containing E3 Ub‑protein ligase 2 (WWP2) exerts cancer‑specific functions, the present study assessed the role of WWP2 in liver cancer. WWP2 was revealed to be significantly overexpressed in liver cancer tissues compared with paired normal tissues at the mRNA as well as at the protein level. Furthermore, small interfering RNA-mediated WWP2 knockdown in liver cancer cell lines was demonstrated to inhibit cell proliferation, cause cell cycle arrested in G1 phase and to induce apoptosis as revealed by a Cell Counting Kit-8 assay and flow cytometric analysis. In addition, western blot analysis revealed that WWP2 knockdown significantly increased the expression of apoptosis-associated markers caspase‑7, caspase‑8 and B-cell lymphoma 2 (Bcl-2)-associated X in liver cancer cell lines, while Bcl‑2 was significantly decreased. In conclusion, the present study suggested that WWP2 may exert important functions in the over‑proliferation and evasion of apoptosis of liver cancer, likely through regulating the expression of apoptosis-associated markers. Furthermore, WWP2 may represent a novel diagnostic marker and molecular therapeutic target for liver cancer.
- Published
- 2016
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13. Effect of DAPK1 gene on proliferation, migration, and invasion of carcinoma of pancreas BxPC-3 cell line.
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Qin Y, Ye GX, Wu CJ, Wang S, Pan DB, Jiang JY, Fu J, and Xu SQ
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- Apoptosis, Caspase 3 metabolism, Cell Adhesion, Cell Line, Tumor, Death-Associated Protein Kinases metabolism, Down-Regulation, Eye Proteins metabolism, Humans, Matrix Metalloproteinase 2 metabolism, Nerve Growth Factors metabolism, Pancreas metabolism, Pancreatic Neoplasms metabolism, Pancreatic Neoplasms pathology, Phosphorylation, Proto-Oncogene Proteins c-akt metabolism, Serpins metabolism, Vascular Endothelial Growth Factor A metabolism, Cell Movement, Cell Proliferation, Death-Associated Protein Kinases genetics, Pancreatic Neoplasms genetics
- Abstract
DAPK1 can induce apoptosis in several cells; to determine the effect of DAPK1 would provide a new potential therapeutic strategy for treating pancreatic cancer. The aim of the present study was to investigate the effect of DAPK1 gene on proliferation, migration, and invasion of carcinoma of pancreas BxPC-3 cell line and explore the possible mechanisms. In our study, DAPK1 over-expressed cells were established by using the lentiviral transfection method, and DAPK1 obviously increased in BxPC-3 cells after transient transfection. Cell Counting Kit-8 (CCK-8) assay was used to determine the BxPC-3 cells proliferation after transfection. Apoptosis of the BxPC-3 cells was determined by using flow cytometry analysis. In addition, cell adhesion assay and in vitro invasion assay were performed. Western blotting was used to determine the protein expressions of caspase-3, DAPK1, VEGF, PEDF, MMP2, AKT, P-AKT, P-ERK, Bcl2, and Bax. Our results demonstrated that DAPK1 gene over-expression can suppress the proliferation, migration, and invasion of carcinoma of pancreas BxPC-3 cell line, and the possible mechanisms may be correlated to induction of mitochondria-mediated apoptosis, down-regulations of MMP-2 and VEGF, up-regulations of PEDF, through the PI3K/Akt and ERK pathways.
- Published
- 2014
14. [Effects of human umbilical cord mesenchymal stem cells in the treatment of paraquat-induced lung injury].
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Liu WW, Yu W, Chen JY, Ye GX, Liu YM, Chen LZ, Chen YX, Zhang C, and Zhong XY
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- Acute Lung Injury, Adolescent, Adult, Female, Humans, Lung Injury chemically induced, Lung Injury therapy, Male, Paraquat poisoning, Treatment Outcome, Umbilical Cord cytology, Young Adult, Mesenchymal Stem Cell Transplantation, Pulmonary Edema therapy
- Abstract
Objective: To evaluate the clinical effect and safety of human umbilical cord mesenchymal stem cells (HUCMSCs) in the treatment of lung injury caused by acute paraquat poisoning., Methods: Thirteen patients with lung injury caused by acute paraquat poisoning, who were admitted to Guangzhou No. 12 People's Hospital from December 2008 to December 2012, were divided into HUCMSC group (n = 5) and control group (n = 8). All patients received conventional treatment, while the HUCMSC group was treated with HUCMSCs as an addition. Sequential Organ Failure Assessment (SOFA) system, which was created by the Infection Section of European Society of Intensive Care Medicine, and Acute Physiology and Chronic Health Evaluation II were used to acquire the SOFA scores of patients. The lung injury was evaluated with lung injury score (LIS). The two groups were compared with respect to maximum SOFA scores at 1, 3, 5, 7, 14, and 15 days after paraquat poisoning., Results: The HUCMSC group showed significantly lower maximum SOFA scores than the control group at 15d after poisoning (1.80 ± 2.05 vs 13.50 ± 7.59, P < 0.05). The LISs of the HUCMSC group after treatment (0.45 ± 0.27) were significantly lower than those of the HUCMSC group before treatment (1.15 ± 0.34) and those of the control group after treatment (2.94 ± 1.20) (P < 0.01). In the HUCMSC group, all patients survived, and they complained no discomfort and showed normal liver, kidney, and lung functions in reexamination; one patient showed incompletely absorbed shadow in the posterior segment of the left lower lobe of the lung during lung CT scan, and no abnormal findings were seen in other patients. In the control group, one patient survived, and others died. No adverse reactions, such as chill and fever, were presented in the HUCMSC group., Conclusion: HUCMSCs show promise for clinical application in the treatment of lung injury caused by acute paraquat poisoning.
- Published
- 2012
15. Preferred structures of the atomic Ag islands on silicone oil surfaces.
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Zhang CH, Lv N, Zhang XF, Yang B, and Ye GX
- Abstract
Varying the substrate temperature T(s) from 285 to 353 K, both the aggregation behavior of Ag atoms and the preferred structures of the atomic Ag islands on silicone oil surfaces are investigated. After deposition, the deposited Ag atoms form isolated islands with a preferred height. Our observations reveal that, as T(s) increases, the preferred island height increases from 20.0 to 33.0 nm, which results in the decrease of the Ag apparent coverage, from 9.6 ± 0.1% to 6.5 ± 0.3%. Further, the crystal structure of the Ag islands changes from amorphous to polycrystalline as the substrate temperature T(s) goes up. Subsequently a 3D aggregation mechanism of the Ag atoms on the liquid substrates is proposed.
- Published
- 2011
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16. [Investigating the treatment of silicosis with autologous bone marrow-derived mesenchymal stem cells].
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Chen LZ, Liu WW, Chen JY, Yu W, Ye GX, Zhan Y, Wu JM, and Guo ZK
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- Adult, Bone Marrow Cells, Female, Humans, Male, Middle Aged, Transfection, Transplantation, Autologous, Treatment Outcome, Hepatocyte Growth Factor genetics, Mesenchymal Stem Cell Transplantation methods, Silicosis surgery
- Abstract
Objective: To explore the safety and curative effects of autologous bone marrow-derived mesenchymal stem cells (BMSCs) in the treatment of silicosis., Methods: The protocol was approved by the Ethics Committee of the hospital, and ten patients with silicosis who had given written consent were enrolled in this study. BMSCs isolated from 100 ml of bone marrow for each case were purified and cultured. In each case the 3rd generation of qualified BMSCs (5 × 10(7)) were intravenously administered weekly for 3 weeks. Three cases among 10 patients were treated with BMSCs modified by hepatocyte growth factor (HGF) gene. The clinical symptoms, chest films, chest CT, pulmonary functions, T cells, serum IgG and ceruloplasmin (CP) were observed in 6 or 9 months after treatment., Results: No obvious sub-effect was observed in cases treated with BMSCs, the clinical symptoms (such as cough, sputum and chest tightness) basically disappeared in 9 months after treatment. Pulmonary function tests showed that FVC increased from 71.2% ± 17.0% to 84.0% ± 10.9% (P < 0.01) and FEV1.0 increased from 67.5% ± 17.7% to 80.6% ± 14.9% (P < 0.01). The levels of serum CP and IgG significantly decreased (P < 0.01). Further, the chest films and CT in cases treated with autologous BMSCs modified by HGF gene were improved to different extent., Conclusion: Treatment with autologous BMSCs modified by HGF gene exhibit a beneficial effect on silicosis.
- Published
- 2011
17. [The experimental study of suppressing silicosis fibrosis].
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Weng ZP, Zhang JJ, Liu WW, Chen J, Liu YM, Yu W, Tang LJ, Chen JY, Fang M, Zhang C, Ye GX, Chen LZ, and Zhong XY
- Subjects
- Animals, Bone Marrow Cells cytology, Hepatocyte Growth Factor genetics, Male, Pulmonary Fibrosis chemically induced, Rats, Rats, Wistar, Transfection, Hepatocyte Growth Factor metabolism, Mesenchymal Stem Cells metabolism, Pulmonary Fibrosis prevention & control, Silicon Dioxide toxicity, Silicosis prevention & control
- Abstract
Objective: To compare the difference of effects on SiO(2)-induced alveolitis and early fibrosis between bone marrow-derived mesenchymal-like stem cells (BM-MSCs) and BM-MSCs transfected by pcDNA3.1-HGF and to explore the mechanism of this effects., Methods: The Primary BM-MSCs from Wistar male young rats were cultured and labeled by 4, 6-diamidino-2-phenylindole (DAPI). Fifty Wistar rats were randomly divided into 3 groups:model group (10 rats),which was administered with SiO(2) by the trache, the next day,injected PBS via the tail vein; BM-MSCs group (20 rats),which was administered with SiO(2) by the trache, the next day,injected with 1 ml suspension of BM-MSCs via the tail vein; pcDNA3.1-HGF plus BM-MSC group (20 rats),which was administered with SiO(2) by the trache, the next day,injected with 1 ml suspension of BM-MSCs transfected by pcDNA3.1-HGF via the tail vein. On the 14th and 28th days after treatment, half of the animals were sacrificed, respectively, and the lungs were harvested for frozen section to observe the cell marked by DAPI. HE staining under a fluorescent microscope, and to observe the pulmonary alveolitis and fibrosis by HE and Masson staining under a light microscope. Western blot assay was used to detect the expression of HGF in rat lungs. The expression levels of tumor necrosis factor-α (TNF-α) in pulmonary tissues were analyzed quantitatively by ELISA. The contents of HYP in pulmonary tissues were analyzed quantitatively by sample hydrolysis method., Results: On the 14th and 28th days after treatment, the scores of pulmonary alveolitis and early fibrosis in pcDNA3.1-HGF plus BM-MSCs group were 2.36 ± 0.17, 2.8 ± 0.14 and 0.1 ± 0.11, 1.16 ± 0.13, which were significantly lower than those (1.68 ± 0.17, 1.58 ± 0.31 and 0.54 ± 0.15, 1.36 ± 0.13) in BM-MSCs group, also which were significantly lower those (2.36 ± 0.17, 2.80 ± 0.14 and 0.64 ± 0.09, 1.84 ± 0.17) in model group (P < 0.05); On the 14th and 28th days after treatment, the TNF-α contents of pulmonary tissues in pcDNA3.1-HGF plus BM-MSCs group were 280.4 ± 23.11 and 249.78 ± 22.33 pg/mg, which were significantly lower than those (341.58 ± 35.34, 442.29 ± 36.76 pg/mg and 319.51 ± 17.84, 348.53 ± 33.95 pg/mg) in BM-MSCs and model groups (P < 0.05); On the 14th and 28th days after treatment, the HYP contents of pulmonary tissues in pcDNA3.1-HGF plus BM-MSCs group were 0.46 ± 0.04 and 0.65 ± 0.05 µg/mg, which were significantly lower than those (0.63 ± 0.04, 1.04 ± 0.07 µg/mg and 0.72 ± 0.60, 1.39 ± 0.60 µg/mg) in BM-MSCs and model groups (P < 0.05)., Conclusion: The effects of BM-MSCs transfected by pcDNA3.1-HGF on suppressing pulmonary alveolitis and early fibrosis induced by SiO2 were better than those of BM-MSCs. The mechanism may be associated with the reduced pulmonary inflammation.
- Published
- 2011
18. [Sustained dynamic release characteristics of fibrin glue enwrapping cisplatin].
- Author
-
Xu XD, Lu XH, Shi Y, Ye GX, and Zhu XY
- Subjects
- Adult, Aged, Cisplatin therapeutic use, Female, Fibrin Tissue Adhesive pharmacokinetics, Fibrin Tissue Adhesive therapeutic use, Humans, Male, Middle Aged, Stomach Neoplasms drug therapy, Cisplatin administration & dosage, Cisplatin pharmacokinetics, Fibrin Tissue Adhesive administration & dosage
- Abstract
Objective: To summarize the sustained dynamic release characteristics of fibrin glue enwrapping cisplatin., Methods: In this in vivo study, 20 patients received fibrin glue enwrapping cisplatin placed into the abdominal cavity while another 20 patients received cisplatin as the control group. Their peripheral blood and urine samples were collected at a regular interval to determine the concentrations and the pharmacokinetic parameters of cisplatin., Results: The peak peripheral blood concentration of cisplatin in the study group was significantly lower than that in the control group [(192.2 ± 33.5) vs (1077.6 ± 176.6) µg/L, P < 0.01]. And the peak urine concentration of cisplatin was significantly lower in the study group than that in the control group [(18.6 ± 8.7) vs (55.8 ± 12.7) µg/L, P < 0.01]. The elimination half-life of cisplatin was 23.32 h and 13.93 h respectively in the study and control groups. The elimination half-life and the area under the curve in peripheral blood and urine samples of the study group were significantly longer than those of the control group (P < 0.01)., Conclusion: The fibrin glue enwrapping cisplatin has the excellent in vivo characteristics of sustained dynamic release. Thus it may prolong the retention of cisplatin in abdominal cavity and lower its concentration in peripheral blood.
- Published
- 2011
19. [Hepatocyte growth factor combined with autologous bone marrow mesenchymal stem cell transplantation for treatment of silicosis].
- Author
-
Liu WW, Chen JY, Yu W, Ye GX, Zhang C, Yang ZQ, Liu YM, Zhong XY, and Guo ZK
- Subjects
- Adult, Female, Follow-Up Studies, Humans, Treatment Outcome, Bone Marrow Transplantation, Hepatocyte Growth Factor therapeutic use, Mesenchymal Stem Cell Transplantation, Silicosis therapy
- Abstract
Objective: To evaluate the potential role of hepatocyte growth factor (HGF) combined with bone marrow mesenchymal stem cells (BMSC) autograft for the treatment of silicosis., Methods: Bone marrow (100 ml) was aspirated from a severe silicosis patient. BMSCs isolated, purified and cultured in vitro. When BMSC came to 70% confluence at passage 3, the culture medium was added liposomes (lipo2000) and plasmid-HGF (p-HGF) and cultured for 2 d. HGF-MSCSs (5 × 10(7) cells) were resuspended in 50 ml 0.9% sodium chloride (NS) and infused Intravenous drip at 3 consecutive times (once a week). Clinical follow-up were performed before and after treatment: (1) pulmonary high-kV X-ray, chest CT examination; (2) pulmonary function test; (3) determination of serum ceruloplasmin., Results: The symptoms such as coughing, chest tightness disappeared at 12 months after treatment. Pulmonary function tests showed significant changes after treatment: forced vital capacity (FVC) increased from 64.6% to 81.0%, forced expiratory volume in one second (FEV(1.0)) increased from 68.7% to 90.1%, 1 second rate (FEV(1.0)/FVC%) reduced from 111.6% to 107.1%, the maximum mid-expiratory flow (FEF(25%∼75%) decreased from 100.2% to 94.6%, forced expiratory vital capacity 75% of the moment bit of gas flow (MEF(75%)) increased from 99.2% to 113.5%, forced expiratory vital capacity 50% of the moment bit of gas flow (MEF(50%)) increased from 125.3% to 130.2%, forced expiratory vital capacity 25% of the moment bit of gas flow (MEF(25%)) reduced from 86.9% to 71.7%; serum ceruloplasmin levels decreased from 690 mg/L to 180.6 mg/L; lung high-kV X-ray at 1st review showed that diffuse lung nodules had been absorbed and getting smaller than before treatment; chest CT showed that the distribution and number of small nodules at double lung fields decreased than before treatment., Conclusion: HGF combined with BMSC transplantation may have some potential role for the treatment of silicosis patients.
- Published
- 2011
20. Structural and electrical properties of a metallic rough-thin-film system deposited on liquid substrates.
- Author
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Ye Gx, Zhang Qr, Feng Cm, Ge Hl, and Jiao Zk
- Published
- 1996
- Full Text
- View/download PDF
21. Third-harmonic coefficient in a Au-film percolation system deposited on fracture surfaces of alpha -Al2O3 ceramics.
- Author
-
Ye Gx, Zhang Qr, Xu Yq, Jiao Zk, Zhang Xj, and Tao Xm
- Published
- 1995
- Full Text
- View/download PDF
22. Evidence of anomalous hopping and tunneling effects on the conductivity of a fractal Pt-film system.
- Author
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Ye Gx, Wang Js, Xu Yq, Jiao Zk, and Zhang Qr
- Published
- 1994
- Full Text
- View/download PDF
23. Critical behaviors in a Pt-film percolation system deposited on fracture surfaces of alpha -Al2O3 ceramics.
- Author
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Ye Gx, Xu Yq, Wang Js, Jiao Zk, and Zhang Qr
- Published
- 1994
- Full Text
- View/download PDF
24. [Preliminary experimental observations on adult respiratory distress syndrome--correlation between pulmonary morphology and function].
- Author
-
Ye GX
- Subjects
- Animals, Lung physiopathology, Lung ultrastructure, Microscopy, Electron, Rabbits, Respiratory Distress Syndrome physiopathology, Lung pathology, Respiratory Distress Syndrome pathology
- Published
- 1983
25. [Treatment of adult respiratory distress syndrome--preliminary experimental study].
- Author
-
Ye GX
- Subjects
- Animals, Intermittent Positive-Pressure Ventilation, Oxygen blood, Rabbits, Respiratory Distress Syndrome therapy
- Published
- 1984
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