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https://www.readbyqxmd.com/read/29221162/caveolin-1-mediated-stat3-activation-determines-electrotaxis-of-human-lung-cancer-cells
#1
Li Li, Kejun Zhang, Conghua Lu, Qin Sun, Sanjun Zhao, Lin Jiao, Rui Han, Caiyu Lin, Jianxin Jiang, Min Zhao, Yong He
Migration of cancer cells leads to the invasion of distant organs by primary tumors. Further, endogenous electric fields (EFs) in the tumor microenvironment direct the migration of lung cancer cells by a process referred to as electrotaxis - although the precise mechanism remains unclear. Caveolin-1 (Cav-1) is a multifunctional scaffolding protein that is associated with directional cell migration and lung cancer invasion; however, its precise role in lung cancer electrotaxis is unknown. In the present study, we first detected outward electric currents on the tumor body surface in lung cancer xenografts using a highly-sensitive vibrating probe...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29211809/down-regulation-of-the-klf5-c-myc-interaction-due-to-klf5-phosphorylation-mediates-resveratrol-repressing-the-caveolin-1-transcription-through-the-pi3k-pkd1-akt-pathway
#2
Hui Yang, Qiuxia Chen, Fangyun Sun, Nana Zhao, Lirong Wen, Lin Li, Gai Ran
Resveratrol (RSV), a natural polyphenol, has been reported to produce effect on genes transcription in lipid metabolism. In this study, we aim to explore the novel mechanisms of RSV on the regulation of caveolin-1 (Cav-1) transcription. Via body weight, blood glucose, serum lipid, and liver pathology detection, we found that RSV decreased body weight, blood glucose and lipid accumulation in rats fed high-fat diet. Based on co-immunoprecipitation (Co-IP) and western blotting assay, we found that RSV up-regulated klf5 phosphorylation and decreased the interaction of klf5 with c-Myc, which were accompanied by down-regulation of Cav-1 expression in livers of rats fed with high-fat diet...
2017: PloS One
https://www.readbyqxmd.com/read/29211030/thymbra-capitata-l-cav-and-rosmarinus-officinalis-l-essential-oils-in-vitro-effects-and-toxicity-on-swine-spermatozoa
#3
Alberto Elmi, Domenico Ventrella, Francesca Barone, Gianfranco Filippini, Stefania Benvenuti, Annamaria Pisi, Maurizio Scozzoli, Maria L Bacci
Essential oils possess a variety of biological properties (i.e., antioxidant, antibacterial, and cytotoxic) that could possibly be applied in reproductive medicine, but their effects on spermatozoa are still partially unknown. The aim of the study was to describe the effects of Thymbra capitata (L.) Cav. and Rosmarinus officinalis (L.) essential oils on the main morpho-functional parameters of swine spermatozoa. Essential oils were preliminary characterized by gas chromatography and added with emulsifiers to facilitate diffusion...
December 6, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29207674/genetic-polymorphisms-in-caveolin-1-associate-with-breast-cancer-risk-in-chinese-han-population
#4
Meng Wang, Tian Tian, Xiaobin Ma, Wenge Zhu, Yan Guo, Zhao Duan, Jiangbo Fan, Shuai Lin, Kang Liu, Yi Zheng, Qianwen Sheng, Zhi-Jun Dai, Huixia Peng
Caveolin-1(CAV-1) was demonstrated to be a tumor suppressor gene and be implicated in the development of breast cancer (BC). Numerous potentially functional polymorphisms in CAV-1 have been identified, but their effects on BC were not clear. This case-control study aims to evaluate the relationship between CAV-1 polymorphisms and BC risk. 560 BC patients and 583 healthy controls were enrolled in the present study, all from Chinese Han population. We detected 3 single nucleotide polymorphisms (rs3807987, rs1997623, and rs7804372) in CAV-1 using the Sequenom MassARRAY method...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/29205949/improving-defect-based-quantum-emitters-in-silicon-carbide-via-inorganic-passivation
#5
Mark J Polking, Alan M Dibos, Nathalie P de Leon, Hongkun Park
Defect-based color centers in wide-bandgap crystalline solids are actively being explored for quantum information science, sensing, and imaging. Unfortunately, the luminescent properties of these emitters are frequently degraded by blinking and photobleaching that arise from poorly passivated host crystal surfaces. Here, a new method for stabilizing the photoluminescence and charge state of color centers based on epitaxial growth of an inorganic passivation layer is presented. Specifically, carbon antisite-vacancy pairs (CAV centers) in 4H-SiC, which serve as single-photon emitters at visible wavelengths, are used as a model system to demonstrate the power of this inorganic passivation scheme...
December 5, 2017: Advanced Materials
https://www.readbyqxmd.com/read/29203526/caveolin-1-regulates-lipid-droplet-metabolism-in-endothelial-cells-via-autocrine-prostacyclin-stimulated-camp-mediated-lipolysis
#6
Andrew Kuo, Monica Y Lee, Kui Yang, Richard W Gross, William C Sessa
Lipid droplets (LD) are dynamic organelles involved in intracellular lipid metabolism in almost all eukaryotic cells and LD associated proteins tightly regulate their dynamics. One LD coat proteins is caveolin-1 (Cav-1), an essential component for caveolae assembly in highly differentiated cells including adipocytes, smooth muscle cells and endothelial cells (EC). However, the role of Cav-1 in LD dynamics is unclear. Here, we report that EC lacking Cav-1 exhibit impaired LD formation. The decreased LD formation was due to due to enhanced  lipolysis, and not caused by reduced triglyceride synthesis or fatty acid uptake...
December 4, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29197370/tocolytic-action-and-underlying-mechanism-of-galetin-3-6-dimethyl-ether-on-rat-uterus
#7
Juliana da Nóbrega Carreiro, Iara Leão Luna de Souza, Joedna Cavalcante Pereira, Luiz Henrique César Vasconcelos, Rafael de Almeida Travassos, Barbara Viviana de Oliveira Santos, Bagnólia Araújo da Silva
BACKGROUND: Galetin 3,6-dimethyl ether (FGAL) is a flavonoid isolated from aerial parts of Piptadenia stipulacea. Previously, FGAL was shown to inhibit both carbachol- and oxytocin-induced phasic contractions in the rat uterus, which was more potent with oxytocin. Thus, in this study, we aimed to investigate the tocolytic action mechanism of FGAL on the rat uterus. METHODS: Segments of rat uterus ileum were suspended in organ bath containing modified Locke-Ringer solution at 32 °C, bubbled with carbogen mixture under a resting tension of 1 g...
December 2, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29194769/intravascular-ultrasound-of-the-proximal-left-anterior-descending-artery-is-sufficient-to-detect-early-cardiac-allograft-vasculopathy
#8
Vincent Floré, Adam J Brown, Stephen J Pettit, Nick Ej West, Clive Lewis, Jayan Parameshwar, Stephen P Hoole
MAIN PROBLEM: Cardiac allograft vasculopathy (CAV) can be detected early with intravascular ultrasound (IVUS) but there is limited information on the most efficient imaging protocol. METHODS: Coronary angiography and IVUS of the 3 coronary arteries were performed. Volumetric IVUS analysis was performed and a Stanford grade determined for each vessel. RESULTS: 18 patients were included 18 (range 12-24) months after transplantation. Angiographic CAV severity ranged from none (CAV0) to mild (CAV1) whereas IVUS CAV severity ranged from none (Stanford grade I) to severe (grade IV)...
November 30, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/29193480/rhabdomyolysis-and-fluctuating-asymptomatic-hyperckemia-associated-with-cacna1s-variant
#9
Charenya Anandan, Mark A Cipriani, Ruple S Laughlin, Zhiyv Niu, Margherita Milone
BACKGROUND AND PURPOSE: CACNA1S encodes Cav 1.1, a voltage sensor for muscle excitation-contraction coupling, which activates the ryanodine receptor 1 (RYR1) leading to calcium release from the sarcoplasmic reticulum. CACNA1S mutations cause hypokalemic periodic paralysis, malignant hyperthermia and congenital myopathy. RYR1 mutations result in congenital myopathy, malignant hyperthermia and rhabdomyolysis. METHODS: To describe a novel phenotype associated with a CACNA1S variant at a site previously linked to hypokalemic periodic paralysis...
November 29, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/29191295/changes-in-outcomes-of-cardiac-allograft%C3%A2-vasculopathy-over-30-years-following-heart-transplantation
#10
Maxime Tremblay-Gravel, Normand Racine, Simon de Denus, Anique Ducharme, Guy B Pelletier, Geneviève Giraldeau, Mark Liszkowski, Marie-Claude Parent, Michel Carrier, Annik Fortier, Michel White
OBJECTIVES: This study investigated temporal changes in the demographics and the prognosis of cardiac allograft vasculopathy (CAV) over 30 years following heart transplantation (HTx). BACKGROUND: Effects of the changing HTx demographics on CAV outcomes, based on International Society for Heart and Lung Transplantation (ISHLT) classification of CAV, have been incompletely investigated. METHODS: Patients who underwent HTx at the Montreal Heart Institute were classified according to the severity of CAV (CAV 0 is no presence of CAV; CAV 1 is mild, CAV 2 to 3 is moderate to severe) and era of HTx (early: 1983 to 1998; recent: 1999 to 2011)...
December 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/29181124/inhibition-of-caveolae-contributes-to-propofol-preconditioning-suppressed-microvesicles-release-and-cell-injury-by-hypoxia-reoxygenation
#11
Fan Deng, Shuang Wang, Shuyun Cai, Zhe Hu, Riping Xu, Jingjing Wang, Du Feng, Liangqing Zhang
Endothelial microvesicles (EMVs), released after endothelial cell (EC) apoptosis or activation, may carry many adverse signals and propagate injury by intercellular transmission. Caveolae are 50-100 nm cell surface plasma membrane invaginations involved in many pathophysiological processes. Recent evidence has indicated EMVs and caveolae may have functional effects in cells undergoing H/R injury. Propofol, a widely used anaesthetic, confers antioxidative stress capability in the same process. But the connection between EMVs, H/R, and caveolae remains largely unclear...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29174139/altered-tgf-%C3%AE-endocytic-trafficking-contributes-to-the-increased-signaling-in-marfan-syndrome
#12
Anna-Maria Siegert, Carla Serra-Peinado, Enric Gutiérrez-Martínez, Fernando Rodríguez-Pascual, Isabel Fabregat, Gustavo Egea
The main cardiovascular alteration in Marfan syndrome (MFS) is the formation of aortic aneurysms in which augmented TGF-β signaling is reported. However, the primary role of TGF-β signaling as a molecular link between the genetic mutation of fibrillin-1 and disease onset is controversial. The compartmentalization of TGF-β endocytic trafficking has been shown to determine a signaling response in which clathrin-dependent internalization leads to TGF-β signal propagation, and caveolin-1 (CAV-1) associated internalization leads to signal abrogation...
November 23, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29173585/european-surveillance-of-emerging-pathogens-associated-with-canine-infectious-respiratory-disease
#13
Judy A Mitchell, Jacqueline M Cardwell, Heather Leach, Caray A Walker, Sophie Le Poder, Nicola Decaro, Miklos Rusvai, Herman Egberink, Peter Rottier, Mireia Fernandez, Eirini Fragkiadaki, Shelly Shields, Joe Brownlie
Canine infectious respiratory disease (CIRD) is a major cause of morbidity in dogs worldwide, and is associated with a number of new and emerging pathogens. In a large multi-centre European study the prevalences of four key emerging CIRD pathogens; canine respiratory coronavirus (CRCoV), canine pneumovirus (CnPnV), influenza A, and Mycoplasma cynos (M. cynos); were estimated, and risk factors for exposure, infection and clinical disease were investigated. CIRD affected 66% (381/572) of the dogs studied, including both pet and kennelled dogs...
December 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/29169152/knockdown-of-caveolin-1-sensitizes-human-basal-like-triple-negative-breast-cancer-cells-to-radiation
#14
Man Zou, Yanhui Li, Shu Xia, Qian Chu, Xiaoguang Xiao, Hong Qiu, Yu Chen, Zu'an Zheng, Fei Liu, Liang Zhuang, Shiying Yu
BACKGROUND/AIMS: Triple-negative breast cancer (TNBC) is a high-risk breast cancer phenotype without specific targeted therapy options and is significantly associated with increased local recurrence in patients treated with radiotherapy. CAVEOLIN-1 (CAV-1)-mediated epidermal growth factor receptor (EGFR) nuclear translocation following irradiation promotes DNA repair and thus induces radiation resistance. In this study, we aimed to determine whether knockdown of CAV-1 enhances the radiosensitivity of basal-like TNBC cell lines and to explore the possible mechanisms...
November 23, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29163047/biphasic-regulation-of-caveolin-1-gene-expression-by-fluoxetine-in-astrocytes-opposite-effects-of-pi3k-akt-and-mapk-erk-signaling-pathways-on-c-fos
#15
Baoman Li, Shu Jia, Tingting Yue, Li Yang, Chen Huang, Alexej Verkhratsky, Liang Peng
Previously, we reported that fluoxetine acts on 5-HT2B receptor and induces epidermal growth factor receptor (EGFR) transactivation in astrocytes. Recently, we have found that chronic treatment with fluoxetine regulates Caveolin-1 (Cav-1)/PTEN/PI3K/AKT/glycogen synthase kinase 3β (GSK-3β) signaling pathway and glycogen content in primary cultures of astrocytes with bi-phasic concentration dependence. At low concentrations fluoxetine down-regulates Cav-1 gene expression, decreases membrane content of PTEN, increases PI3K activity and increases phosphorylation of GSK-3β and increases its activity; at high concentrations fluoxetine acts on PTEN/PI3K/AKT/GSK-3β in an inverse fashion...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29161763/quantifying-the-relationship-between-inhibition-of-vegfr-2-drug-induced-blood-pressure-elevation-and-hypertension
#16
Teresa Collins, Kelly Gray, Michal Bista, Matt Skinner, Christopher Hardy, Haiyun Wang, Jerome T Mettetal, Alexander R Harmer
BACKGROUND AND PURPOSE: Several anti-angiogenic cancer drugs that inhibit VEGF receptor (VEGFR) signalling for efficacy are associated with a 15-60% incidence of hypertension. Tyrosine kinase inhibitors (TKIs) that have off-target activity at VEGFR-2 may also cause blood pressure elevation as an undesirable side effect. Therefore, the ability to translate VEGFR-2 off-target potency into blood pressure elevation would be useful in development of novel TKIs. EXPERIMENTAL APPROACH: We sought to quantify the relationship between VEGFR-2 inhibition and blood pressure elevation for a range of kinase inhibitors...
November 21, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29158021/gold-nanoparticles-potentiate-cav-channel-currents-in-rat-tail-artery-myocytes
#17
Fabio Fusi, Giampietro Sgaragli, Massimo Valoti
This study was designed to unveil effects of 5-nm sized, polyvinylpyrrolidone-coated gold nanoparticles (AuNPs) on vascular CaV1.2 and CaV3.1 channels. Ba(2+) currents through both channels (IBa1.2 and IBa3.1) were recorded in single myocytes isolated from the rat tail main artery by means of the whole-cell patch-clamp method. AuNPs increased IBa1.2 and IBa3.1 amplitude in a concentration- and Vh-dependent manner. Neither the voltage dependence of inactivation and activation curves nor inactivation and activation kinetics were affected by AuNPs...
November 17, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29154860/the-role-of-caveolin-1-in-morphine-induced-structural-plasticity-in-primary-cultured-mouse-cerebral-cortical-neurons
#18
Weihua Cui, Yi Ren, Shanshan Wang, Min Zeng, Song Han, Junfa Li, Ruquan Han
Long-term repeated application of morphine induces plasticity changes in sensitive neurons, which represents the neurobiological basis of morphine addiction. Caveolin-1 (Cav-1) is an important scaffolding protein that plays a key role in the regulation of neurostructural plasticity. However, in-depth studies focused on the role of Cav-1 in morphine-induced changes in neurostructural plasticity are lacking. The present study explored the effects of Cav-1 on the expression levels of 2 markers of neurite outgrowth, growth association protein 43 (GAP-43) and microtubule-associated protein 2 (MAP-2), during the process of morphine-induced changes in the structural plasticity...
November 14, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29152109/sevoflurane-preconditioning-ameliorates-traumatic-spinal-cord-injury-through-caveolin-3-dependent-cyclooxygenase-2-inhibition
#19
Weidong Wu, Ningxian Wei, Lihui Wang, Danhui Kong, Gang Shao, Yingchun Qin, Lixin Wang, Yansheng Du
Acute traumatic spinal cord injury (tSCI) results in a lifetime of paralysis associated with a host of medical complications. The developing secondary complications of tSCI may result in further chronic neurodegenerative diseases. Sevoflurane preconditioning (SF-PreCon) has shown guaranteed protective effects in myocardial or cerebral ischemic/reperfusion injury. However, the role of SF-PreCon in tSCI still remains to be elucidated. Here, we found that SF-PreCon ameliorated the developing secondary complications through reducing the apoptosis rate and the secretion of inflammatory cytokines in injured spinal cord tissues, and therefore enhancing the recovery after tSCI...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29149661/unraveling-the-effects-of-arbuscular-mycorrhizal-fungus-on-uptake-translocation-and-distribution-of-cadmium-in-phragmites-australis-cav-trin-ex-steud
#20
Xiaochen Huang, Li Wang, Shishu Zhu, Shih-Hsin Ho, Jieting Wu, Prasanta K Kalita, Fang Ma
Phragmites australis (Cav.) Trin. ex Steud. has been reported to form a symbiosis with arbuscular mycorrhizal fungus (AMF). However, the tolerance mechanism for AMF symbiosis on cadmium (Cd) phytotoxicity still remains unclear. In this study, we investigated the effects of Rhizophagus irregularis inoculation on Cd-stressed (0, 1, and 20mgL(-1)) roots, stems, and leaves of P. australis with regard to subcellular Cd distribution and chemical forms of Cd. In addition, transmission electron microscopy and Fourier transform infrared spectroscopy were used to investigate variations in subcellular structures and functional groups in plant organs...
November 14, 2017: Ecotoxicology and Environmental Safety
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