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https://www.readbyqxmd.com/read/28819999/high-glucose-induces-hgf-independent-activation-of-met-receptor-in-human-renal-tubular-epithelium
#1
Lucia Mesarosova, Peter Ochodnicky, Jaklien C Leemans, Sandrine Florquin, Peter Krenek, Jan Klimas
CONTEXT: The role of hepatocyte growth factor (HGF) in diabetic kidney damage remains controversial. OBJECTIVE: To test the hypothesis that high glucose levels activate pathways related to HGF and its receptor Met and that this could participate in glucose-induced renal cell damage. MATERIALS AND METHODS: HK2 cells, a human proximal tubule epithelial cell line, were stimulated with high glucose for 48 hours. Levels of pMet/Met, pEGFR/EGFR, pSTAT3/STAT3, pAkt/Akt and pERK1/2/ERK1/2 were studied by immunoblotting...
August 18, 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/28819643/membrane-localization-of-acetylated-cnk1-mediates-a-positive-feedback-on-raf-erk-signaling
#2
Adrian Fischer, Wignand W D Mühlhäuser, Bettina Warscheid, Gerald Radziwill
Spatiotemporal control is a common mechanism that modulates activity and function of signal transducers in the signaling network. We identified acetylation of CNK1 (connector enhancer of kinase suppressor of Ras-1) as a late step in the activation of CNK1 signaling, accompanied with prolonged stimulation of extracellular signal-regulated kinase (ERK). We identified the acetyltransferase CREB (cyclic adenosine 3',5'-monophosphate response element-binding protein)-binding protein and the deacetylase SIRT2 (sirtuin type 2) as novel binding partners of CNK1, modulating the acetylation state of CNK1...
August 2017: Science Advances
https://www.readbyqxmd.com/read/28818868/erythropoietin-stimulates-murine-and-human-fibroblast-growth-factor-23-revealing-novel-roles-for-bone-and-bone-marrow
#3
Erica L Clinkenbeard, Mark R Hanudel, Keith R Stayrook, Hitesh Nidumanda Appaiah, Emily G Farrow, Taryn A Cass, Lelia J Summers, Colin S Ip, Julia M Hum, Joseph C Thomas, Mircea Ivan, Briana M Richine, Rebecca J Chan, Thomas L Clemens, Ernestina Schipani, Yves Sabbagh, Linlin Xu, Edward F Srour, Marta B Alvarez, Melissa A Kacena, Isidro B Salusky, Tomas Ganz, Elizabeta Nemeth, Kenneth E White
No abstract text is available yet for this article.
August 17, 2017: Haematologica
https://www.readbyqxmd.com/read/28818301/in-vitro-fertilization-and-adverse-obstetric-and-perinatal-outcomes
#4
Chantae S Sullivan-Pyke, Suneeta Senapati, Monica A Mainigi, Kurt T Barnhart
Most IVF-conceived children are healthy, but IVF has also been associated with adverse obstetric and perinatal outcomes as well as congenital anomalies. There is also literature suggesting an association between IVF and neurodevelopmental disorders as well as potentially long-term metabolic outcomes. The main driver for adverse outcomes is the higher risk of multiple gestations in IVF, but as the field moves toward single embryo transfer, the rate of multiple gestations is decreasing. Studies have shown that singleton IVF pregnancies still have a higher incidence of adverse outcomes compared to unassisted singleton pregnancies...
August 14, 2017: Seminars in Perinatology
https://www.readbyqxmd.com/read/28817313/ccr7-mediates-tgf-%C3%AE-1-induced-human-malignant-glioma-invasion-migration-and-epithelial-mesenchymal-transition-by-activating-mmp2-9-through-the-nuclear-factor-kappab-signaling-pathway
#5
Yanyan Zheng, Yiting Miu, Xiaokai Yang, Xiaoguo Yang, Meijia Zhu
Chemokine receptor 7 (CCR7) has emerged as an inducer of invasion, migration, and epithelial-mesenchymal transition (EMT) in cancer. In this research, human malignant glioma cells were stimulated with transforming growth factor beta 1 (TGF-β1) and siCCR7. The data show that CCR7 mediates TGF-β1-induced EMT, migration, and invasion in U251 and U87 cells and that these effects of TGF-β1 were reversed by treatment with siCCR7 or a CCR7 neutralizing antibody. Importantly, the TGF-β1-mediated increase in nuclear factor kappaB (NF-κB) activity in human glioma cells was reduced by treatment with siCCR7 or a CCR7 neutralizing antibody...
August 17, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28815971/topographical-and-electrical-stimulation-of-neuronal-cells-through-microwrinkled-conducting-polymer-biointerfaces
#6
Alberto Bonisoli, Attilio Marino, Gianni Ciofani, Francesco Greco
The development of smart biointerfaces combining multiple functions is crucial for triggering a variety of cellular responses. In this work, wrinkled organic interfaces based on the conducting polymer poly(3,4-ethylene dioxythiophene) doped with poly(styrene sulfonate) are developed with the aim to simultaneously convey electrical and topographical stimuli to cultured cells. The surface wrinkling of thin films on heat-shrink polymer sheets allows for rapid patterning of self-assembled anisotropic topographies characterized by micro/sub-microscale aligned wrinkles...
August 16, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28815846/innovative-look-at-dairy-heifer-rearing-effect-of-prenatal-and-post-natal-environment-on-later-performance
#7
REVIEW
M Van Eetvelde, G Opsomer
As heifer rearing is a costly investment, dairy farmers have been stimulated to maximize early growth of their calves, mainly by enhanced liquid feeding. However, the long-term effects of this "accelerated growth" are largely unknown. Studies recently performed at Ghent University indicate that in dairy cattle, certain maternal factors (such as young age and high milk yield) and environmental factors (such as high ambient temperatures) create a suboptimal environment for the developing foetus, altering the phenotype of the newborn calf...
August 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28815354/nf-e2-related-factor-2-suppresses-intestinal-fibrosis-by-inhibiting-reactive-oxygen-species-dependent-tgf-%C3%AE-1-smads-pathway
#8
Yadi Guan, Yue Tan, Weiyu Liu, Jun Yang, Dongxu Wang, Di Pan, Yan Sun, Changqing Zheng
BACKGROUND AND AIMS: This study aimed to evaluate the antifibrotic effects of NF-E2-Related Factor 2 (Nrf2) on intestinal fibrosis. Intestinal fibrosis is a common complication of Crohn's disease; however, its mechanism of intestinal fibrosis is largely unclear. METHODS: BALB/c mice received 2,4,6-trinitrobenzene sulfonic acid weekly via intrarectal injections to induce chronic fibrotic colitis. They also diet containing received 1% (w/w) tert-butylhydroquinone (tBHQ), which is an agonist of Nrf2...
August 16, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28812969/functional-expression-of-bmp7-receptors-in-oral-epithelial-cells-interleukin-17f-production-in-response-to-bmp7
#9
Kensuke Nishio, Yasumasa Ozawa, Hisanori Ito, Takashi Kifune, Tatsuya Narita, Toshimitsu Iinuma, Nobuhito Gionhaku, Masatake Asano
BACKGROUND: Bone morphogenetic proteins (BMPs) are members of the transforming growth factor-β (TGF-β) superfamily. Recently, BMP7 has been demonstrated to be produced by salivary glands and contribute to embryonic branching in mice. The BMP7 in saliva is thought to be delivered to the oral cavity and is expected to contact with stratified squamous epithelial cells which line the surface of oral mucosa. In this study, we attempted to investigate the effects of BMP7 on oral epithelial cells...
October 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/28811968/il-32%C3%AE-induced-inflammation-constitutes-a-link-between-obesity-and-colon-cancer
#10
Victoria Catalán, Javier Gómez-Ambrosi, Amaia Rodríguez, Beatriz Ramírez, Victor A Ortega, José Luis Hernández-Lizoain, Jorge Baixauli, Sara Becerril, Fernando Rotellar, Víctor Valentí, Rafael Moncada, Camilo Silva, Javier Salvador, Gema Frühbeck
Growing evidence indicates that adipose tissue inflammation is an important mechanism whereby obesity promotes cancer risk and progression. Since IL-32 is an important inflammatory and remodeling factor in obesity and is also related to colon cancer (CC) development, the aim of this study was to explore whether IL-32 could function as an inflammatory factor in human obesity-associated CC promoting a microenvironment favorable for tumor growth. Samples obtained from 84 subjects [27 lean (LN) and 57 obese (OB)] were used in the study...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28811163/climate-change-co2-and-defense-the-metabolic-redox-and-signaling-perspectives
#11
REVIEW
Graham Noctor, Amna Mhamdi
Ongoing human-induced changes in the composition of the atmosphere continue to stimulate interest in the effects of high CO2 on plants, but its potential impact on inducible plant defense pathways remains poorly defined. Recently, several studies have reported that growth at elevated CO2 is sufficient to induce defenses such as the salicylic acid pathway, thereby increasing plant resistance to pathogens. These reports contrast with evidence that defense pathways can be promoted by photorespiration, which is inhibited at high CO2...
August 12, 2017: Trends in Plant Science
https://www.readbyqxmd.com/read/28810529/silymarin-induces-a-multi-targeted-cell-death-process-in-the-human-colon-cancer-cell-line-ht-29
#12
L Khorsandi, G Saki, N Bavarsad, M Mombeini
This study investigated the Silymarin (SM) effects on growth of HT-29 human colon cancer cell line and its cellular death mechanism. HT-29 cells were treated by 25μM/ml of SM for 48h. HT-29 cells were also pretreated with 10mmol zVAD (apoptosis inhibitor), 10mmol 3-MA (autophagy inhibitor) and 3mmol Nec (necroptosis inhibitor) for evaluation cell death induced by apoptosis, outophagy and necroptosis. MTT and clonogenicity assays revealed that the SM without inhibitors induced a significant decrease in cell viability and proliferation of HT-29 cells (p<0...
August 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28809438/stimulation-of-human-osteoblast-cells-mg63-proliferation-using-decanoic-acid-and-isopropyl-amine-fractions-of-wattakaka-volubilis-leaves
#13
Elakkiya Venugopal, Govindarajan Ramadoss, Kannan Krishnan, Sujith Subash Eranezhath, Amitava Bhattacharyya, Selvakumar Rajendran
OBJECTIVES: This study was carried out to investigate the impact of various isolated phytochemical components present in the Wattakaka volubilis leaves for the growth and proliferation of human osteoblast like cells (MG63). KEY FINDINGS: Ethyl acetate was found to be the best solvent for potential extraction of phytocompounds. Further, the MTT assay was carried out to deduce the viability of 44 isolated phytochemicals. Ten phytochemical fractions found to increase the cell growth were subjected to statistical tool namely Plackett-Burman and Central composite design to screen the optimum phytochemical fraction and its dosage...
August 15, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28807497/characterisation-of-the-porcine-cytokines-which-activate-the-cd131%C3%AE-c-common-sub-unit-for-potential-immune-augmentation
#14
G Stephenson, K R Morris, T E O'Neil, M P Bruce, A D G Strom, A G D Bean
Early acting cytokines and growth factors such as those of the CD131 βc subunit, may offer an alternative method to the current use of antibiotics and chemicals such as anthelmintics in maintaining Porcine (Po) health. Thus far, the recombinant Po (rPo) Granulocyte-macrophage colony-stimulating factor (GM-CSF), rPo interleukin-3 (IL-3) and rPo interleukin-5 (IL-5) proteins have been identified and cloned and the biological activity of each cytokine has been confirmed in vitro, however, in vivo immune system regulation and hematopoietic stem cell (HSC) augmentation are regulated by numerous cytokines and cellular signals within the bone marrow (BM) niche...
August 11, 2017: Cytokine
https://www.readbyqxmd.com/read/28806736/unravelling-the-interplay-of-sphingolipids-and-tgf-%C3%AE-signaling-in-the-human-corneal-stroma
#15
Sarah E Nicholas, Tyler G Rowsey, Shrestha Priyadarsini, Nawajes A Mandal, Dimitrios Karamichos
PURPOSE: To delineate the role of Sphingolipids (SPLs) in the human cornea and their cross-talks with transforming growth factor beta (TGF-β) in order to develop novel, non-invasive therapies. METHODS: Human corneal fibroblasts (HCFs) were harvested from healthy donors, stimulated with Vitamin C to promote extracellular matrix assembly, treated with exogenous sphingosine-1-phosphate (S1P) or sphingosine kinase inhibitor 2 (SPHK I2) and isolated after 4 weeks for further analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28804622/human-placental-growth-hormone-in-normal-and-abnormal-fetal-growth
#16
Alexandros Velegrakis, Maria Sfakiotaki, Stavros Sifakis
Human placental growth hormone (PGH), encoded by the growth hormone (GH) variant gene on chromosome 17, is expressed in the syncytiotrophoblast and extravillous cytotrophoblast layers of the human placenta. Its maternal serum levels increase throughout pregnancy, and gradually replaces the pulsatile secreted pituitary GH. PGH is also detectable in cord blood and in the amniotic fluid. This placental-origin hormone stimulates glyconeogenesis, lipolysis and anabolism in maternal organs, and influences fetal growth, placental development and maternal adaptation to pregnancy...
August 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28803777/paraoxonase-2-facilitates-pancreatic-cancer-growth-and-metastasis-by-stimulating-glut1-mediated-glucose-transport
#17
Arvindhan Nagarajan, Shaillay Kumar Dogra, Lisha Sun, Neeru Gandotra, Thuy Ho, Guoping Cai, Gary Cline, Priti Kumar, Robert A Cowles, Narendra Wajapeyee
Metabolic deregulation is a hallmark of human cancers, and the glycolytic and glutamine metabolism pathways were shown to be deregulated in pancreatic ductal adenocarcinoma (PDAC). To identify new metabolic regulators of PDAC tumor growth and metastasis, we systematically knocked down metabolic genes that were overexpressed in human PDAC tumor samples using short hairpin RNAs. We found that p53 transcriptionally represses paraoxonase 2 (PON2), which regulates GLUT1-mediated glucose transport via stomatin. The loss of PON2 initiates the cellular starvation response and activates AMP-activated protein kinase (AMPK)...
August 17, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28802232/the-activity-of-hou-po-da-huang-tang-is-improved-through-intestinal-bacterial-metabolism-and-hou-po-da-huang-tang-selectively-stimulate-the-growth-of-intestinal-bacteria-associated-with-health
#18
Xing-Yan Liu, Huai-You Wang, Xue-Qing Li, Juan-Juan Wu, Bo-Yang Yu, Ji-Hua Liu
Hou-Po-Da-Huang Tang (HPDHT) was used for the treatment of intestinal tract diseases in China. However, the underlying mechanisms via the intestinal bacteria remain largely unclear. Therefore, the aim of this study was to evaluate the metabolism of HPDHT by the human intestinal bacteria and its modulating effect on the intestinal bacteria. As a result, a total of 34 compounds were identified in HPDHT and transformed HPDHT (T-HPDHT). Among them, 12 metabolites were proved to be transformed by human intestinal bacteria...
August 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28802229/tgf-%C3%AE-mediated-repression-of-mst1-by-dnmt1-promotes-glioma-malignancy
#19
Zhifei Guo, Guangyuan Li, Erbao Bian, Chun-Chun Ma, Jinghai Wan, Bing Zhao
Human gliomas are related to high rates of morbidity and mortality. TGF-β promotes the growth of glioma cells, and correlate with the degree of malignancy of human gliomas. However, the molecular mechanisms involved in the malignant function of TGF-β are not fully elucidated. Here, we showed that TGF-β induced the downregulation of MST1 expression in U87 and U251 glioma cells. Treatment of glioma cells with the DNA methylation inhibitor 5-aza-2'-deoxycytidine (5-AzadC) prevented the loss of MST1 expression...
August 9, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28802037/the-pi3k-pathway-in-human-disease
#20
REVIEW
David A Fruman, Honyin Chiu, Benjamin D Hopkins, Shubha Bagrodia, Lewis C Cantley, Robert T Abraham
Phosphoinositide 3-kinase (PI3K) activity is stimulated by diverse oncogenes and growth factor receptors, and elevated PI3K signaling is considered a hallmark of cancer. Many PI3K pathway-targeted therapies have been tested in oncology trials, resulting in regulatory approval of one isoform-selective inhibitor (idelalisib) for treatment of certain blood cancers and a variety of other agents at different stages of development. In parallel to PI3K research by cancer biologists, investigations in other fields have uncovered exciting and often unpredicted roles for PI3K catalytic and regulatory subunits in normal cell function and in disease...
August 10, 2017: Cell
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