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https://www.readbyqxmd.com/read/28738542/protective-effects-of-tannic-acid-on-acute-doxorubicin-induced-cardiotoxicity-involvement-of-suppression-in-oxidative-stress-inflammation-and-apoptosis
#1
Jianping Zhang, Lijing Cui, Xue Han, Yuanyuan Zhang, Xuan Zhang, Xi Chu, Fenghua Zhang, Ying Zhang, Li Chu
Doxorubicin (DOX) is a highly effective drug, but its cardiotoxicity restricts its therapeutic index. Oxidative stress is the major etiopathological factor in DOX-induced cardiotoxicity. Tannic acid (TA) has various anti-cancer, antioxidant, and anti-inflammatory activities. The purpose of the study was to survey the possible effects of TA against acute DOX-induced cardiotoxicity. Male Sprague-Dawleyrats were randomly divided into five groups: control, DOX (10mg/kg) alone, DOX with TA (20 and 40mg/kg), or DOX withcaptopril (30mg/kg) treatments...
July 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738532/genipin-attenuates-cisplatin-induced-nephrotoxicity-by-counteracting-oxidative-stress-inflammation-and-apoptosis
#2
Eglal Mahgoub, Shanmugam Muthu Kumaraswamy, Kamal Hassan Kader, Balaji Venkataraman, Shreesh Ojha, Ernest Adeghate, Mohanraj Rajesh
Cisplatin (CP) is a potent and widely used chemotherapeutic agent. However, the clinical benefits of CP are compromised because it elicits nephrotoxicity and ototoxicity. In this study, we investigated the nephroprotective effects of the phytochemical genipin (GP) isolated from the gardenia (Gardenia jasminoides) fruit, using a murine model of CP-induced nephropathy. GP pretreatment attenuated the CP-induced renal tissue injury by diminishing the serum blood urea nitrogen, creatinine, and cystatin C levels, as well as those of kidney injury molecule-1...
July 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738501/inhibition-of-glycogen-synthase-kinase-3-increased-subventricular-zone-stem-cells-proliferation
#3
Narges Pachenari, Sahar Kiani, Mohammad Javan
The effects of Wnt signaling modifiers on cell proliferation, seem to be cell specific. Enhancing the proliferation of subventricular zone (SVZ) progenitors has been in the focus of research in recent years. Here we investigate the effect of CHIR99021, a Glycogen Synthase Kinase 3 (GSk-3) inhibitor, on SVZ progenitor's proliferation both in vivo and in vitro. Neural stem cells were extracted from the adult C57bl/6 by mincing and trypsin treatment followed by culturing in specific medium. Sphere cells formed within about 7-10days and were characterized by immunostaining...
July 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738499/aqueous-extract-of-codium-fragile-suppressed-inflammatory-responses-in-lipopolysaccharide-stimulated-raw264-7-cells-and-carrageenan-induced-rats
#4
Seul Ah Lee, Sung-Min Moon, Yun Hee Choi, Seul Hee Han, Bo-Ram Park, Mi Suk Choi, Jae-Sung Kim, Yong Hwan Kim, Do Kyung Kim, Chun Sung Kim
Codium fragile (Suringar) Hariot has been used in Oriental medicine for the treatment of enterobiasis, dropsy, and dysuria and has been shown to have various biological effects. In this study, we evaluated the anti-inflammatory effects of aqueous extract of C. fragile (AECF) using in vitro and in vivo models. Nitric oxide (NO), prostaglandin E2 (PGE2), inflammatory-related mRNAs, and proteins were determined using the Griess assay, enzyme-linked immunosorbent assay (ELISA), reverse transcription-polymerase chain reaction (RT-PCR), and western blotting, respectively...
July 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28738389/pdgf-promotes-the-warburg-effect-in-pulmonary-arterial-smooth-muscle-cells-via-activation-of-the-pi3k-akt-mtor-hif-1%C3%AE-signaling-pathway
#5
Yunbin Xiao, Hongyan Peng, Chenliang Hong, Zhi Chen, Xicheng Deng, Aiping Wang, Fang Yang, Li Yang, Chen Chen, Xuping Qin
BACKGROUND/AIMS: The enhanced proliferation of pulmonary arterial smooth muscle cells (PASMCs) is a central pathological component in pulmonary arterial hypertension (PAH). Both the Warburg effect and platelet-derived growth factor (PDGF) are involved in the proliferation of PASMCs. However, the mechanism underlying the crosstalk between the Warburg effect and PDGF during PASMC proliferation is still unknown. We hypothesized that PDGF promotes the Warburg effect via activating the phosphatidylinositol 3-kinase (PI3K) signaling pathway and hypoxia-inducible factor 1-α (HIF-1α) in proliferative PASMCs...
July 24, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28738256/p53-and-mitf-bcl-2-identified-as-key-pathways-in-the-acquired-resistance-of-nras-mutant-melanoma-to-mek-inhibition
#6
Ahmad Najem, Mohammad Krayem, François Salès, Nader Hussein, Bassam Badran, Caroline Robert, Ahmad Awada, Fabrice Journe, Ghanem E Ghanem
Activating mutations in Neuroblastoma RAS viral oncogene homolog (NRAS) are found in 15-30% of melanomas and are associated with a poor prognosis. Although MAP kinase kinase (MEK) inhibitors used as single agents showed a limited clinical benefit in patients with NRAS-mutant melanoma due to their rather cytostatic effect and high toxicity, their combination with other inhibitors of pathways known to cooperate with MEK inhibition may maximise their antitumour activity. Similarly, in a context where p53 is largely inactivated in melanoma, hyperexpression of Microphthalmia associated transcription factor (MITF) and its downstream anti-apoptotic targets may be the cause of the restraint cytotoxic effects of MEK inhibitors...
July 21, 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28738112/central-role-of-protein-kinase-a-in-promoting-trigeminal-nociception-in-an-in-vivo-model-of-temporomandibular-disorders
#7
Lindsey K Koop, Jordan L Hawkins, Lauren E Cornelison, Paul L Durham
AIMS: To investigate cellular changes in the spinal trigeminal nucleus (STN) and trigeminal ganglion (TG) associated with trigeminal nociception mediated by inflammation in the temporomandibular joint (TMJ). METHODS: Male Sprague-Dawley rats (n = 86) were utilized to investigate cellular and behavioral responses to prolonged TMJ inflammation caused by bilateral injection of Complete Freund's Adjuvant (CFA) in the TMJ capsules. To investigate the cellular effects of protein kinase A (PKA) in the STN, rats were injected intrathecally with the selective PKA inhibitor KT5720 prior to injection of CFA into both TMJ capsules...
July 2017: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/28738012/evaluation-of-protein-kinase-ck2-as-a-therapeutic-target-for-squamous-cell-carcinoma-of-cats
#8
Claire M Cannon, Janeen H Trembley, Betsy T Kren, Gretchen M Unger, M Gerard O'Sullivan, Ingrid Cornax, Jaime F Modiano, Khalil Ahmed
OBJECTIVE To investigate protein kinase CK2 (CK2) expression in squamous cell carcinoma (SCC) of cats and to examine effects of CK2 downregulation on in vitro apoptosis and viability in SCC. SAMPLE Biopsy specimens of oral mucosa and testis and blood samples from clinically normal cats, biopsy specimens of oral SCC from cats, and feline SCC (SCCF1) and mammary gland carcinoma (K12) cell lines. PROCEDURES Immunohistochemical labeling for CK2α was performed on biopsy specimens. Sequences of the CK2α subunit gene and CK2α' subunit gene in feline blood and feline cancer cell lines were determined by use of PCR and reverse-transcription PCR assays followed by direct Sanger sequencing...
August 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28737772/cortical-forces-and-cdc-42-control-clustering-of-par%C3%A2-proteins-for-caenorhabditis-elegans-embryonic%C3%A2-polarization
#9
Shyi-Chyi Wang, Tricia Yu Feng Low, Yukako Nishimura, Laurent Gole, Weimiao Yu, Fumio Motegi
Cell polarization enables zygotes to acquire spatial asymmetry, which in turn patterns cellular and tissue axes during development. Local modification in the actomyosin cytoskeleton mediates spatial segregation of partitioning-defective (PAR) proteins at the cortex, but how mechanical changes in the cytoskeleton are transmitted to PAR proteins remains elusive. Here we uncover a role of actomyosin contractility in the remodelling of PAR proteins through cortical clustering. During embryonic polarization in Caenorhabditis elegans, actomyosin contractility and the resultant cortical tension stimulate clustering of PAR-3 at the cortex...
July 24, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28737766/endothelial-fibrosis-induced-by-suppressed-stat3-expression-mediated-by-signaling-involving-the-tgf-%C3%AE-1-alk5-smad-pathway
#10
Alvaro Becerra, Macarena Rojas, Alejandro Vallejos, Vicente Villegas, Lorena Pérez, Claudio Cabello-Verrugio, Felipe Simon
During systemic inflammatory pathologies, mediators of inflammation circulate in the bloodstream and interact with endothelial cells (ECs), resulting in endothelial dysfunction that maintains and enhances the pathological condition. Inflammatory mediators change the protein expression profile of ECs, which become activated fibroblasts via endothelial-to-mesenchymal transition. This process is characterized by downregulated endothelial proteins and strongly upregulated fibrotic-specific genes and extracellular matrix-forming proteins...
July 24, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28737678/an-update-on-jacalin-like-lectins-and-their-role-in-plant-defense
#11
REVIEW
Lara Esch, Ulrich Schaffrath
Plant lectins are proteins that reversibly bind carbohydrates and are assumed to play an important role in plant development and resistance. Through the binding of carbohydrate ligands, lectins are involved in the perception of environmental signals and their translation into phenotypical responses. These processes require down-stream signaling cascades, often mediated by interacting proteins. Fusing the respective genes of two interacting proteins can be a way to increase the efficiency of this process. Most recently, proteins containing jacalin-related lectin (JRL) domains became a subject of plant resistance responses research...
July 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28737531/potential-causes-of-elevated-ree-following-high-intensity-exercise
#12
Gary R Hunter, Douglas R Moellering, Stephen J Carter, Barbara A Gower, Marcas M Bamman, Lyndsey M Hornbuckle, Eric P Plaisance, Gordon Fisher
INTRODUCTION: Resting energy expenditure (REE) increases following intense exercise; however, little is known concerning mechanisms. PURPOSE: Determine effects of a single bout of moderate-intensity continuous aerobic exercise (MIC), or high intensity interval exercise (HII) on REE under energy balance conditions. METHODS: Thirty-three untrained premenopausal women were evaluated at baseline, after 8-16 weeks of training, 22 hours following either MIC (50% peak VO2) or HII (84% peak VO2)...
July 21, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28737508/targeting-nek2-attenuates-glioblastoma-growth-and-radioresistance-by-destabilizing-histone-methyltransferase-ezh2
#13
Jia Wang, Peng Cheng, Marat S Pavlyukov, Hai Yu, Zhuo Zhang, Sung-Hak Kim, Mutsuko Minata, Ahmed Mohyeldin, Wanfu Xie, Dongquan Chen, Violaine Goidts, Brendan Frett, Wenhao Hu, Hongyu Li, Yong Jae Shin, Yeri Lee, Do-Hyun Nam, Harley I Kornblum, Maode Wang, Ichiro Nakano
Accumulating evidence suggests that glioma stem cells (GSCs) are important therapeutic targets in glioblastoma (GBM). In this study, we identified NIMA-related kinase 2 (NEK2) as a functional binding protein of enhancer of zeste homolog 2 (EZH2) that plays a critical role in the posttranslational regulation of EZH2 protein in GSCs. NEK2 was among the most differentially expressed kinase-encoding genes in GSC-containing cultures (glioma spheres), and it was required for in vitro clonogenicity, in vivo tumor propagation, and radioresistance...
July 24, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28737478/family-matters-how-myc-family-oncogenes-impact-small-cell-lung-cancer
#14
Johannes Brägelmann, Stefanie Böhm, Matthew R Guthrie, Gurkan Mollaoglu, Trudy G Oliver, Martin L Sos
Small cell lung cancer (SCLC) is one of the most deadly cancers and currently lacks effective targeted treatment options. Recent advances in the molecular characterization of SCLC has provided novel insight into the biology of this disease and raises hope for a paradigm shift in the treatment of SCLC. We and others have identified activation of MYC as a driver of susceptibility to Aurora kinase inhibition in SCLC cells and tumors that translates into a therapeutic option for the targeted treatment of MYC-driven SCLC...
July 24, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28737473/association-between-the-high-soluble-fms-like-tyrosine-kinase-1-to-placental-growth-factor-ratio-and-adverse-outcomes-in-asymptomatic-women-with-early-onset-fetal-growth-restriction
#15
Satoshi Shinohara, Yuzo Uchida, Mayuko Kasai, Rei Sunami
OBJECTIVE: To assess whether the high soluble fms-like tyrosine kinase-1 (sFlt-1) to placental growth factor (PlGF) ratio is associated with adverse outcomes (e.g., HELLP syndrome [hemolysis, elevated liver enzymes, and low platelets], severe hypertension uncontrolled by medication, non-reassuring fetal status, placental abruption, pulmonary edema, growth arrest, maternal death, or fetal death) and a shorter duration to delivery in early-onset fetal growth restriction (FGR). METHODS: Thirty-four women with FGR diagnosed at <34...
July 24, 2017: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/28737298/amp-activated-protein-kinase-is-involved-in-induction-of-protective-autophagy-in-astrocytes-exposed-to-oxygen-glucose-deprivation
#16
Bożena Gabryel, Alicja Kost, Daniela Kasprowska, Sebastian Liber, Grzegorz Machnik, Ryszard Wiaderkiewicz, Krzysztof Łabuzek
No abstract text is available yet for this article.
August 2017: Cell Biology International
https://www.readbyqxmd.com/read/28737232/chlorinated-adenosine-analogue-induces-ampk-and-autophagy-in-chronic-lymphocytic-leukaemia-cells-during-therapy
#17
Christine M Stellrecht, Lisa S Chen, Mary L Ayres, Jennifer B Dennison, Shujun Shentu, Yuling Chen, Michael J Keating, William G Wierda, Varsha Gandhi
8-chloro-adenosine (8-Cl-Ado) is currently in phase-I clinical trials for acute myeloid leukaemia and chronic lymphocytic leukaemia (CLL). Previously, we demonstrated that treatment with 8-Cl-Ado leads to diminished ATP levels. We hypothesized that AMP-activated protein kinase (AMPK) signalling would be initiated in these cells, leading to induction of autophagy. AMPK activation and induction of autophagy were demonstrated during preclinical incubations in CLL cells with the analogues. Importantly, we extended similar observations in CLL lymphocytes during an 8-Cl-Ado phase-I trial...
July 24, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28737122/preserved-heart-function-after-left-ventricular-pressure-overload-in-adult-mice-subjected-to-neonatal-cardiac-hypoplasia
#18
K Heinecke, A Heuser, F Blaschke, C Jux, L Thierfelder, J-D Drenckhahn
Intrauterine growth restriction in animal models reduces heart size and cardiomyocyte number at birth. Such incomplete cardiomyocyte endowment is believed to increase susceptibility toward cardiovascular disease in adulthood, a phenomenon referred to as developmental programming. We have previously described a mouse model of impaired myocardial development leading to a 25% reduction of cardiomyocyte number in neonates. This study investigated the response of these hypoplastic hearts to pressure overload in adulthood, applied by abdominal aortic constriction (AAC)...
July 24, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28736869/photon-induced-near-field-electron-microscopy-pinem-of-eukaryotic-cells
#19
Mohammed Kaplan, Byung-Kuk Yoo, Jau Tang, Tony Karam, Bolin Liao, Devdoot Majumdar, David Baltimore, Grant Jensen, Ahmed Zewail
Photon-induced near-field electron microscopy (PINEM) is a technique to produce and then image evanescent electromagnetic fields on the surfaces of nanostructures. Most previous applications of PINEM have imaged surface plasmon-polariton waves on conducting nanomaterials. Here, the application of PINEM on whole human cancer cells and membrane vesicles isolated from them is reported. We show that photons induce time-, orientation-, and polarization-dependent evanescent fields on the surfaces of A431 cancer cells and isolated membrane vesicles...
July 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28736633/biologics-in-gastrointestinal-and-pancreatic-neuroendocrine-tumors
#20
REVIEW
Iris H Liu, Pamela L Kunz
The development of biologic agents has ushered in a new era of precision medicine, opening the door to new therapeutic options designed to intelligently target cancer cells and their promoting factors, while leaving normal cells relatively unharmed. Biologics for the treatment of neuroendocrine tumors (NETs) have followed in the footsteps of regimens targeting pathways upregulated in other cancers, including the vascular endothelial growth factor (VEGF) and the mammalian target of rapamycin (mTOR). Through a number of clinical trials, the mTOR inhibitor everolimus and the receptor tyrosine kinase (RTK) inhibitor sunitinib were recently approved for NETs...
June 2017: Journal of Gastrointestinal Oncology
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