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https://www.readbyqxmd.com/read/28497398/early-markers-of-myocardial-ischemia-from-the-experimental-model-to-forensic-pathology-cases-of-sudden-cardiac-death
#1
Sara Sabatasso, Milena Moretti, Patrice Mangin, Tony Fracasso
The goal of this study was to assess whether early markers of myocardial ischemia, identified in a previous experimental work, can be applied in forensic pathology cases of sudden, ischemic cardiac death. These markers include desphosphorylated connexin 43 (Cx43), JunB, TUNEL assay, myoglobin, and troponin T. Fourteen cases of sudden cardiac death with gross and/or histological signs of myocardial infarction and 14 cases of sudden cardiac death with signs of early ischemia at histology and positive immunoreactions for fibronectin and C5b-9 were investigated...
May 11, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28472164/association-study-of-mcp-1-promoter-polymorphisms-with-the-susceptibility-and-progression-of-sepsis
#2
Junbing He, Yuhua Chen, Yao Lin, Wenying Zhang, Yujie Cai, Feng Chen, Qinghui Liao, Zihan Yin, Yan Wang, Shoubao Tao, Xiaoli Lin, Pengru Huang, Lili Cui, Yiming Shao
Previous studies have indicated that the monocyte chemo-attractant protein 1 (MCP-1), also referred to as C-C motif chemokine ligand 2 (CCL2), plays a significant role in the pathogenesis of sepsis, and this study investigated the clinical relevance of two MCP-1 gene polymorphisms on sepsis onset and progression. The Multiplex SNaPshot genotyping method was used to detect MCP-1 gene polymorphisms in the Chinese Han population (403 sepsis patients and 400 controls). MCP-1 mRNA expression levels were measured using real-time quantitative PCR, and enzyme-linked immunosorbent assays were used to analyze MCP-1, tumor necrosis factor-alpha (TNF-α), interleukin 6 (IL-6) and interleukin-1 beta (IL-1β) plasma concentrations...
2017: PloS One
https://www.readbyqxmd.com/read/28458545/role-of-hedgehog-gli1-signaling-in-the-enhanced-proliferation-and-differentiation-of-mg63-cells-enabled-by-hierarchical-micro-nanotextured-topography
#3
Yao Lin, Yinghe Huang, Junbing He, Feng Chen, Yanfang He, Wenying Zhang
Hedgehog-Gli1 signaling is evolutionarily conserved and plays an essential role in osteoblast proliferation and differentiation as well as bone formation. To evaluate the role of the Hedgehog-Gli1 pathway in the response of osteoblasts to hierarchical biomaterial topographies, human MG63 osteoblasts were seeded onto smooth, microstructured, and micro-/nanotextured topography (MNT) titanium to assess osteoblast proliferation and differentiation in terms of proliferative activity, alkaline phosphatase (ALP) production, and osteogenesis-related gene expression...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28458013/aberrant-methylation-of-runx3-is-present-in-aflatoxin-b1-induced-transformation-of-the-l02r-cell-line
#4
Shan Wang, Zhini He, Daochuan Li, Bo Zhang, Miao Li, Wenxue Li, Wei Zhu, Xiumei Xing, Xiaowen Zeng, Qing Wang, Guanghui Dong, Yongmei Xiao, Wen Chen, Liping Chen
Chronic exposure to aflatoxin B1 (AFB1) is linked to the development of hepatocellular carcinoma (HCC). To identify differentially methylated genes involved in AFB1-induced cell transformation, we analyzed DNA methylation patterns in immortal human hepatocyte L02 cells expressing an oncogenic H-Ras allele (L02R cells) and AFB1-transformed L02R (L02RT-AFB1) cells by performing genome-wide methylation profiling. We treated L02R cells with 0.3μM AFB1 weekly and observed a transformed phenotype at the 17th week post-treatment...
April 27, 2017: Toxicology
https://www.readbyqxmd.com/read/28454334/taxotere-induced-elevated-expression-of-il8-in-carcinoma-associated-fibroblasts-of-breast-invasive-ductal-cancer
#5
Yingliang Li, Guohua Rong, Hua Kang
Breast cancer is the most common malignant tumor in women worldwide, and accounts for an estimated 29% of new cases and 15% of cancer-associated mortalities each year. Invasive ductal carcinoma represents 70-80% of all breast cancer cases, which are responsible for the majority of breast cancer fatalities. Though great progress has been made in understanding the tumorigenesis and development of breast cancer, problems surrounding treatment persist. It was previously reported that carcinoma-associated fibroblasts (CAFs) may be closely associated with chemotherapy resistance...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28423685/tumor-fibroblast-interactions-stimulate-tumor-vascularization-by-enhancing-cytokine-driven-production-of-mmp9-by-tumor-cells
#6
Michelle Limoge, Alfiya Safina, Amy Beattie, Lauren Kapus, Alexander M Truskinovsky, Andrei V Bakin
Advance-stage breast carcinomas include significant amounts of fibroblasts and infiltrating immune cells which have been implicated in tumor growth, recurrence, and response to therapy. The present study investigated the contribution of fibroblasts to tumor growth using direct tumor-fibroblast co-cultures and tumor xenograft models. Our findings revealed that fibroblasts enhance breast carcinoma growth by promoting the tumor vasculature via the MMP9-dependent mechanism. In tumor-fibroblast co-cultures, fibroblasts increased expression of TGF-β, TNF, and IL-1β cytokines in tumor cells...
March 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28387248/mir-1827-inhibits-osteogenic-differentiation-by-targeting-igf1-in-msmscs
#7
ShuangXi Zhu, Wei Peng, Xiang Li, JunQuan Weng, Xing Zhang, JunBing Guo, DaiYing Huang, Qiong Rong, SongLing Chen
We recently reported that maxillary sinus membrane stem cells (MSMSCs) have osteogenic potential. However, the biological mechanisms of bone formation remain unclear. In this study, we investigated the role and mechanisms of microRNAs (miRNAs) in the osteogenic differentiation of MSMSCs. The expression of miRNAs was determined in differentiated MSMSCs by comprehensive miRNA microarray analysis and quantitative RT-PCR (qRT-PCR). We selected miR-1827 for functional follow-up studies to explore its significance in MSMSCs...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28298358/identification-of-%C3%AE-catenin-interacting-proteins-in-nuclear-fractions-of-native-rat-collecting-duct-cells
#8
Jacqueline R Hwang, Chung-Lin Chou, Barbara Medvar, Mark A Knepper, Hyun Jun Jung
The gene encoding the aquaporin-2 water channel is regulated transcriptionally in response to vasopressin. In the renal collecting duct, vasopressin stimulates the nuclear translocation and phosphorylation (at Ser552) of β-catenin, a multifunctional protein that acts as a transcriptional co-regulator in the nucleus. The purpose of this study was to identify β-catenin interacting proteins that may be involved in transcriptional regulation in rat inner medullary collecting duct (IMCD) cells using both experimental and computational approaches...
March 15, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28155253/characterization-of-key-transcription-factors-as-molecular-signatures-of-hpv-positive-and-hpv-negative-oral-cancers
#9
Gaurav Verma, Kanchan Vishnoi, Abhishek Tyagi, Mohit Jadli, Tejveer Singh, Ankit Goel, Ankita Sharma, Kiran Agarwal, Subhash Chandra Prasad, Durgatosh Pandey, Shashi Sharma, Ravi Mehrotra, Sukh Mahendra Singh, Alok Chandra Bharti
Prior studies established constitutively active AP-1, NF-κB, and STAT3 signaling in oral cancer. Differential expression/activation of specific members of these transcription factors has been documented in HPV-positive oral lesions that respond better to therapy. We performed a comprehensive analysis of differentially expressed, transcriptionally active members of these pivotal signaling mediators to develop specific signatures of HPV-positive and HPV-negative oral lesions by immunohistochemical method that is applicable in low-resource settings...
March 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28096474/junb-regulates-angiogenesis-and-neurovascular-parallel-alignment-in-mouse-embryonic-skin
#10
Yasuo Yoshitomi, Takayuki Ikeda, Hidehito Saito, Yoshino Yoshitake, Yasuhito Ishigaki, Toshihisa Hatta, Nobuo Kato, Hideto Yonekura
Blood vessels and nerve fibers are often closely arranged in parallel throughout the body. Therefore, neurovascular interactions have been suggested to be important for the development of vascular networks. However, the molecular mechanisms and genes regulating this process remain unclear. In the present study, we investigated the genes that are activated in endothelial cells (ECs) following interactions with neurons during vascular development. Microarray analyses of human primary microvascular ECs co-cultured with mouse primary dorsal root ganglion cells showed that JunB is strongly upregulated in ECs by neurovascular interactions...
January 17, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28063039/xenotransplantation-model-of-psoriasis
#11
Jeremy Di Domizio, Curdin Conrad, Michel Gilliet
Psoriasis is a chronic autoimmune skin disease affecting approximately 2 % of the population with a major psychosocial and socioeconomic impact. A causal therapy leading to permanent cure is not available, and current treatments only lead to limited amelioration, and therefore new therapeutic targets need to be identified. Recent works demonstrated a predominant role of TH17 cells in the pathogenesis of psoriasis; yet the underlying molecular mechanisms driving the development of the disease are still largely elusive...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28005952/microrna-and-transcription-factor-gene-regulatory-network-analysis-reveals-key-regulatory-elements-associated-with-prostate-cancer-progression
#12
Mehdi Sadeghi, Bijan Ranjbar, Mohamad Reza Ganjalikhany, Faiz M Khan, Ulf Schmitz, Olaf Wolkenhauer, Shailendra K Gupta
Technological and methodological advances in multi-omics data generation and integration approaches help elucidate genetic features of complex biological traits and diseases such as prostate cancer. Due to its heterogeneity, the identification of key functional components involved in the regulation and progression of prostate cancer is a methodological challenge. In this study, we identified key regulatory interactions responsible for primary to metastasis transitions in prostate cancer using network inference approaches by integrating patient derived transcriptomic and miRomics data into gene/miRNA/transcription factor regulatory networks...
2016: PloS One
https://www.readbyqxmd.com/read/27992400/the-histone-demethylase-utx-regulates-the-lineage-specific-epigenetic-program-of-invariant-natural-killer-t-cells
#13
Semir Beyaz, Ji Hyung Kim, Luca Pinello, Michael E Xifaras, Yu Hu, Jialiang Huang, Marc A Kerenyi, Partha P Das, R Anthony Barnitz, Aurelie Herault, Rizkullah Dogum, W Nicholas Haining, Ömer H Yilmaz, Emmanuelle Passegue, Guo-Cheng Yuan, Stuart H Orkin, Florian Winau
Invariant natural killer T cells (iNKT cells) are innate-like lymphocytes that protect against infection, autoimmune disease and cancer. However, little is known about the epigenetic regulation of iNKT cell development. Here we found that the H3K27me3 histone demethylase UTX was an essential cell-intrinsic factor that controlled an iNKT-cell lineage-specific gene-expression program and epigenetic landscape in a demethylase-activity-dependent manner. UTX-deficient iNKT cells exhibited impaired expression of iNKT cell signature genes due to a decrease in activation-associated H3K4me3 marks and an increase in repressive H3K27me3 marks within the promoters occupied by UTX...
February 2017: Nature Immunology
https://www.readbyqxmd.com/read/27937072/altered-expression-of-g1-s-phase-cell-cycle-regulators-in-placental-mesenchymal-stromal-cells-derived-from-preeclamptic-pregnancies-with-fetal-placental-compromise
#14
Anna Maria Nuzzo, Domenica Giuffrida, Bianca Masturzo, Paolo Mele, Ettore Piccoli, Carola Eva, Tullia Todros, Alessandro Rolfo
Herein, we evaluated whether Placental Mesenchymal Stromal Cells (PDMSCs) derived from normal and Preeclamptic (PE) placentae presented differences in the expression of G1/S-phase regulators p16(INK4A), p18(INK4C), CDK4 and CDK6. Finally, we investigated normal and PE-PDMSCs paracrine effects on JunB, Cyclin D1, p16(INK4A), p18(INK4C), CDK4 and CDK6 expressions in physiological term villous explants. PDMSCs were isolated from physiological (n = 20) and PE (n = 24) placentae. Passage three normal and PE-PDMSC and conditioned media (CM) were collected after 48h...
January 17, 2017: Cell Cycle
https://www.readbyqxmd.com/read/27936102/am251-suppresses-epithelial-mesenchymal-transition-of-renal-tubular-epithelial-cells
#15
Tomoyo Yoshinaga, Kenichiro Uwabe, Shoichi Naito, Kenichi Higashino, Toru Nakano, Yoshito Numata, Akio Kihara
Epithelial-mesenchymal transition (EMT) of renal tubular epithelial cells is one of the causative mechanisms of kidney fibrosis. In our study, we screened lipophilic compounds using a lipid library including approximately 200 lipids to identify those that suppressed EMT induced by a transforming growth factor (TGF)-β1 stimulus. Initial screening was performed with the immortalized HK-2 renal tubule epithelial cell line. The most promising compounds were further tested in RPTEC primary renal tubule epithelial cells...
2016: PloS One
https://www.readbyqxmd.com/read/27913023/in-stream-metabolism-and-atmospheric-carbon-sequestration-in-a-groundwater-fed-karst-stream
#16
Junbing Pu, Jianhong Li, Mitra B Khadka, Jonathan B Martin, Tao Zhang, Shi Yu, Daoxian Yuan
Atmospheric carbon sequestered in karst systems through dissolution of carbonate minerals is considered to have no net effect on long-term regional and global carbon budgets because precipitation of dissolved carbonate minerals emits CO2 back to the atmosphere. Even though recent studies have implied that rapid kinetics of carbonate dissolution coupled with the aquatic photosynthetic uptake of dissolve inorganic carbon (DIC) could facilitate a stable atmospheric C sink in karst rivers and streams, little is known about the magnitudes and long-term stability of this C sink...
February 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27890927/the-ap-1-transcription-factor-junb-is-essential-for-multiple-myeloma-cell-proliferation-and-drug-resistance-in-the-bone-marrow-microenvironment
#17
F Fan, M H Bashari, E Morelli, G Tonon, S Malvestiti, S Vallet, M Jarahian, A Seckinger, D Hose, L Bakiri, C Sun, Y Hu, C R Ball, H Glimm, M Sattler, H Goldschmidt, E F Wagner, P Tassone, D Jaeger, K Podar
Despite therapeutic advances, multiple myeloma (MM) remains an incurable disease, predominantly because of the development of drug resistance. The activator protein-1 (AP-1) transcription factor family has been implicated in a multitude of physiologic processes and tumorigenesis; however, its role in MM is largely unknown. Here we demonstrate specific and rapid induction of the AP-1 family member JunB in MM cells when co-cultured with bone marrow stromal cells. Supporting a functional key role of JunB in MM pathogenesis, knockdown of JUNB significantly inhibited in vitro MM cell proliferation and survival...
December 16, 2016: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/27825096/phosphoinositide-3-kinase-akt-inhibits-mst1-mediated-pro-apoptotic-signaling-through-phosphorylation-of-threonine-120
#18
Zengqiang Yuan, Donghwa Kim, Shaokun Shu, Junbing Wu, Jianping Guo, Lei Xiao, Satoshi Kaneko, Domenico Coppola, Jin Q Cheng
No abstract text is available yet for this article.
October 21, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27805583/repetitive-transcranial-magnetic-stimulation-to-the-unilateral-hemisphere-of-rat-brain
#19
Jaewon Beom, Jung Chan Lee, Jin Chul Paeng, Tai Ryoon Han, Moon Suk Bang, Byung-Mo Oh
Previous rodent models of repetitive transcranial magnetic stimulation (rTMS) adopted whole-brain stimulation instead of unilateral hemispheric rTMS, which is unlike the protocols used for human subjects. We report a successful application of rTMS to the unilateral hemisphere of rat brain. The rTMS was delivered with a low-frequency (1 Hz), high-frequency (20 Hz), or sham stimulation protocol to one side of the brain by using a small 25-mm figure-8 coil. We placed the center of the coil 1 cm lateral to the vertex on the biauricular line and angulated the coil 45° to the ground to minimize a potential direct effect of rTMS on the contralateral cortex...
October 22, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27793034/therapeutic-efficacy-of-the-bromodomain-inhibitor-otx015-mk-8628-in-alk-positive-anaplastic-large-cell-lymphoma-an-alternative-modality-to-overcome-resistant-phenotypes
#20
Michela Boi, Maria Todaro, Valentina Vurchio, Shao Ning Yang, John Moon, Ivo Kwee, Andrea Rinaldi, Heng Pan, Ramona Crescenzo, Mangeng Cheng, Leandro Cerchietti, Olivier Elemento, Maria E Riveiro, Esteban Cvitkovic, Francesco Bertoni, Giorgio Inghirami
Anaplastic large cell lymphomas (ALCL) represent a peripheral T-cell lymphoma subgroup, stratified based on the presence or absence of anaplastic lymphoma kinase (ALK) chimeras. Although ALK-positive ALCLs have a more favorable outcome than ALK-negative ALCL, refractory and/or relapsed forms are common and novel treatments are needed. Here we investigated the therapeutic potential of a novel bromodomain inhibitor, OTX015/MK-8628 in ALK-positive ALCLs.The effects of OTX015 on a panel of ALK+ ALCL cell lines was evaluated in terms of proliferation, cell cycle and downstream signaling, including gene expression profiling analyses...
November 29, 2016: Oncotarget
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