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https://www.readbyqxmd.com/read/28716920/vamp3-and-snap23-mediate-the-disturbed-flow-induced-endothelial-microrna-secretion-and-smooth-muscle-hyperplasia
#1
Juan-Juan Zhu, Yue-Feng Liu, Yun-Peng Zhang, Chuan-Rong Zhao, Wei-Juan Yao, Yi-Shuan Li, Kuei-Chun Wang, Tse-Shun Huang, Wei Pang, Xi-Fu Wang, Xian Wang, Shu Chien, Jing Zhou
Vascular endothelial cells (ECs) at arterial branches and curvatures experience disturbed blood flow and induce a quiescent-to-activated phenotypic transition of the adjacent smooth muscle cells (SMCs) and a subsequent smooth muscle hyperplasia. However, the mechanism underlying the flow pattern-specific initiation of EC-to-SMC signaling remains elusive. Our previous study demonstrated that endothelial microRNA-126-3p (miR-126-3p) acts as a key intercellular molecule to increase turnover of the recipient SMCs, and that its release is reduced by atheroprotective laminar shear (12 dynes/cm(2)) to ECs...
July 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28699302/runx3-inhibits-melanoma-cell-migration-through-regulation-of-cell-shape-change
#2
Xin Zhang, Linghui Wang, Xianlu Zeng, Takashi Fujita, Wenguang Liu
The transcription factor Runx3 is a known tumor suppressor gene, and its expression is frequently lost in melanoma. However, the potential contribution of the loss of Runx3 expression to melanoma development and progression remains unclear. In this in vitro study, we demonstrated that ectopic Runx3 re-expression in B16-F10 melanoma cells changed the cell shape from elongated and branched to spread and unbranched, which enhanced stress fiber formation, increased the number of mature and fibrillar focal adhesions, and up-regulated fibronectin expression...
July 12, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28689484/transcatheter-aortic-valve-implantation-as-a-bailout-procedure-for-acute-aortic-valve-regurgitation-during-endovascular-arch-repair
#3
Adrien Hertault, Rachel E Clough, Thomas Modine, Jean-Luc Auffray, Mohamad Koussa, Stéphan Haulon
PURPOSE: To report emergent transcatheter aortic valve implantation (TAVI) to treat acute severe aortic regurgitation caused by valve cusp dysfunction following proximal migration of an endograft implanted in the ascending aorta during endovascular arch repair. CASE REPORT: A 65-year-old man had been previously treated with thoracic and fenestrated endografts in a 2-stage procedure for a chronic type B dissection. At 2-year follow-up, aneurysmal evolution of the distal arch led to development of a proximal type Ia endoleak...
July 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28687666/domain-specific-control-of-germ-cell-polarity-and-migration-by-multifunction-tre1-gpcr
#4
Michelle G LeBlanc, Ruth Lehmann
The migration of primordial germ cells (PGCs) from their place of origin to the embryonic gonad is an essential reproductive feature in many animal species. In Drosophila melanogaster, a single G protein-coupled receptor, Trapped in endoderm 1 (Tre1), mediates germ cell polarization at the onset of active migration and directs subsequent migration of PGCs through the midgut primordium. How these different aspects of cell behavior are coordinated through a single receptor is not known. We demonstrate that two highly conserved domains, the E/N/DRY and NPxxY motifs, have overlapping and unique functions in Tre1...
July 7, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28687665/mutation-of-the-%C3%AE-tubulin-tuba1a-leads-to-straighter-microtubules-and-perturbs-neuronal-migration
#5
Richard Belvindrah, Kathiresan Natarajan, Preety Shabajee, Elodie Bruel-Jungerman, Jennifer Bernard, Marie Goutierre, Imane Moutkine, Xavier H Jaglin, Mythili Savariradjane, Theano Irinopoulou, Jean-Christophe Poncer, Carsten Janke, Fiona Francis
Brain development involves extensive migration of neurons. Microtubules (MTs) are key cellular effectors of neuronal displacement that are assembled from α/β-tubulin heterodimers. Mutation of the α-tubulin isotype TUBA1A is associated with cortical malformations in humans. In this study, we provide detailed in vivo and in vitro analyses of Tuba1a mutants. In mice carrying a Tuba1a missense mutation (S140G), neurons accumulate, and glial cells are dispersed along the rostral migratory stream in postnatal and adult brains...
July 7, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/28647853/are-podocytes-motile
#6
REVIEW
Nicole Endlich, Florian Siegerist, Karlhans Endlich
Podocytes, the postmitotic and highly branched epithelial cells of the glomerulus, play a pivotal role for the function of the glomerular filtration barrier and the development of chronic kidney disease. It has long been discussed whether podocytes in vivo are motile and can laterally migrate in a coordinated way along the capillaries until they reach the position of naked glomerular basement membrane often found in podocytopathies. Such motility would also be the prerequisite for the replacement of lost podocytes by progenitor cells...
June 24, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28647195/adapting-to-a-total-endovascular-approach-for-complex-aortic-aneurysm-repair-outcomes-after-fenestrated-and-branched-endovascular-aortic-repair
#7
Jacob Budtz-Lilly, Anders Wanhainen, Jacob Eriksson, Kevin Mani
OBJECTIVE: This study reports the feasibility of adopting a total endovascular approach for the treatment of complex abdominal aortic aneurysms (AAAs) at a European aortic center and compares the short- and midterm results against those from large and multicenter studies. METHODS: All patients treated endovascular aortic repair (EVAR) for juxta/pararenal AAAs or thoracoabdominal aortic aneurysms (TAAAs), both elective and acute, as well as reoperations, from 2010 to 2015 were included...
June 21, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28645554/monocrotophos-an-organophosphorus-insecticide-disrupts-the-expression-of-hpnetrin-and-its-receptor-neogenin-during-early-development-in-the-sea-urchin-hemicentrotus-pulcherrimus
#8
Xiaona Zhang, Lei Xu, Hua Tian, Cuicui Wang, Wei Wang, Shaoguo Ru
Netrins, chemotropic guidance cues, can guide the extension of serotonergic axons by binding to netrin receptors during neural development. However, little is known about whether disruption of netrin signaling is involved in the mechanisms by which organophosphorus pesticides affect serotonergic nervous system (SNS) development. In this study, we evaluated the effects of the pesticide monocrotophos (MCP) on the expression patterns of HpNetrin and its receptor neogenin as well as on the intracellular calcium ion (Ca(2+)) levels in Hemicentrotus pulcherrimus (sea urchin) by exposing fertilized embryos to 0, 0...
June 20, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28640882/quantitation-of-underivatized-branched-chain-amino-acids-in-sport-nutritional-supplements-by-capillary-electrophoresis-with-direct-or-indirect-uv-absorbance-detection
#9
Jun Qiu, Jinhao Wang, Zhongqi Xu, Huiqing Liu, Jie Ren
The branched-chain amino acids (BCAAs) including leucine (Leu), isoleucine (Ile) and valine (Val) play a pivotal role in the human body. Herein, we developed capillary electrophoresis (CE) coupled with conventional UV detector to quantify underivatized BCAAs in two kinds of sport nutritional supplements. For direct UV detection at 195 nm, the BCAAs (Leu, two enantiomers of Ile and Val) were separated in a background electrolyte (BGE) consisting of 40.0 mmol/L sodium tetraborate, and 40.0 mmol/L β-cyclodextrin (β-CD) at pH 10...
2017: PloS One
https://www.readbyqxmd.com/read/28631253/portal-branch-ligation-does-not-counteract-the-inhibiting-effect-of-temsirolimus-on-extrahepatic-colorectal-metastatic-growth
#10
Sebastian Senger, Jens Sperling, Barbara Oberkircher, Martin K Schilling, Otto Kollmar, Michael D Menger, Christian Ziemann
The mTor-inhibitor temsirolimus (TEM) has potent anti-tumor activities on extrahepatic colorectal metastases. Treatment of patients with advanced disease may require portal branch ligation (PBL). While PBL can induce intrahepatic tumor growth, the effect of PBL on extrahepatic metastases under TEM treatment is unknown. Therefore, we analyzed the effects of TEM treatment on extrahepatic metastases during PBL-associated liver regeneration. GFP-transfected CT26.WT colorectal cancer cells were implanted into the dorsal skinfold chamber of BALB/c-mice...
June 19, 2017: Clinical & Experimental Metastasis
https://www.readbyqxmd.com/read/28619056/ophthalmic-artery-occlusion-following-neuro-embolization-of-the-external-carotid-artery-a-case-report
#11
Ng Wei Loon, Balwant Singh Gendeh, Rozman Zakaria, Jemaima Che Hamzah, Norshamsiah Md Din
BACKGROUND: Embozene® is a new neuroembolizing microsphere used to reduce intraoperative bleeding for head and neck tumours. We report a case of iatrogenic ophthalmic artery occlusion after Embozene® embolization of the external carotid artery (ECA). CASE PRESENTATION: A 22-year-old African gentleman presented with left nasal obstruction and epistaxis for 2 years and was diagnosed with nasopharyngeal carcinoma. He subsequently underwent embolization of the maxillary branch of the left ECA using Embozene® Microspheres - 250 μm in size before endoscopic tumour excision to reduce intra-operative bleeding...
June 15, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28618962/amelioration-of-dalton-s-lymphoma-induced-angiogenesis-by-melatonin
#12
Rani Kumari, Kavita Rawat, Anupma Kumari, Anju Shrivastava
For tumor to grow beyond 1-2 mm(3) size, tumor recruits new blood vessels referred as angiogenesis; therefore, targeting angiogenesis can be a promising strategy to suppress cancer progression. In this study, in order to develop a good angiogenesis model, we investigated effect of Dalton's lymphoma on angiogenesis and further monitored the role of melatonin on regulation of angiogenesis. To evaluate angiogenesis, endothelial cells were isolated from main thoracic aorta and cultured in vitro in the presence or absence of Dalton's lymphoma supplemented with or without melatonin to monitor their role on its proliferation and migration, a hallmark of angiogenesis...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28613306/size-tunable-microvortex-capture-of-rare-cells
#13
Reem Khojah, Ryan Stoutamore, Dino Di Carlo
Inertial separation of particles and cells based on their size has advanced significantly over the last decade. However, size-based inertial separation methods require precise tuning of microfluidic device geometries to adjust the separation size of particles or cells. Here, we show a passive capture method that targets a wide size range of cells by controlling the flow conditions in a single device geometry. This multimodal capture device is designed to generate laminar vortices in lateral cavities that branch from long rectangular channels...
June 14, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28605952/migration-of-contraceptive-implant-into-the-left-pulmonary-arterial-system
#14
Ee Phui Kew, Eshan Senanayake, Madava Djearaman, Ehab Bishay
An 18-year-old woman had an etonogestrel implant inserted into her left upper arm 2 years earlier for menorrhagia. Her symptoms were not well controlled and she requested the implant to be removed. However, clinicians were unable to locate the implant on her left arm. Computed tomography showed that the implant had migrated to a sub-lobar branch of the left lower lobe pulmonary artery. The long-term effect of leaving an etonogestrel implant in the pulmonary arterial system is unknown. This report adds to the small body of evidence on intravascular migration of a subdermally placed contraceptive implant...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28603223/unique-trichomonas-vaginalis-gene-sequences-identified-in-multinational-regions-of-northwest-china
#15
Jun Liu, Meng Feng, Xiaolan Wang, Yongfeng Fu, Cailing Ma, Xunjia Cheng
Trichomonas vaginalis (T. vaginalis) is a flagellated protozoan parasite that infects humans worldwide. This study determined the sequence of the 18S ribosomal RNA gene of T. vaginalis infecting both females and males in Xinjiang, China. Samples from 73 females and 28 males were collected and confirmed for infection with T. vaginalis, a total of 110 sequences were identified when the T. vaginalis 18S ribosomal RNA gene was sequenced. These sequences were used to prepare a phylogenetic network. The rooted network comprised three large clades and several independent branches...
June 11, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/28583734/thoracic-endovascular-aortic-repair-with-branched-inoue-stent-graft-for-arch-aortic-aneurysms
#16
Junichi Tazaki, Kanji Inoue, Hirooki Higami, Nobuya Higashitani, Masanao Toma, Naritatsu Saito, Masahide Kawatou, Takeshi Kimura
BACKGROUND: Thoracic endovascular aortic repair (TEVAR) for thoracic aortic aneurysms (TAAs) is in rapid expansion due to its minimal invasiveness. However, TEVAR for an arch aneurysm with a straight stent graft needs surgical reconstruction for supra-aortic vessels. A branched stent graft pioneered by Inoue (branched Inoue Stent Graft [ISG]) has been expected to resolve this problem, but its utility remains to be established in the real clinical setting. This study evaluated the long-term clinical outcome of branched ISGs for TAAs...
June 2, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28570446/vascular-endothelial-growth-factor-induction-of-muscle-derived-stem-cells-enhances-vascular-phenotype-while-preserving-myogenic-potential
#17
Howard D Wang, Qiongyu Guo, Amy Quan, Joseph Lopez, Jose C Alonso-Escalante, Denver M Lough, W P Andrew Lee, Gerald Brandacher, Anand R Kumar
BACKGROUND: Previous work by our group and other laboratories have revealed that muscle-derived stem cells (MDSCs) may contain both myogenic and endothelial progenitors, making MDSCs a promising option for skeletal muscle regeneration. The purpose of this study was to investigate the impact of vascular endothelial growth factor (VEGF) induction on the vascular and myogenic potential of MDSCs. METHODS: Muscle-derived stem cells were isolated from 4- to 8-week-old C57BL/6J mice using a preplate technique and recombinant human VEGFa was used as the induction agent...
May 31, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28561029/bacterial-rada-is-a-dnab-type-helicase-interacting-with-reca-to-promote-bidirectional-d-loop-extension
#18
Léa Marie, Chiara Rapisarda, Violette Morales, Mathieu Bergé, Thomas Perry, Anne-Lise Soulet, Clémence Gruget, Han Remaut, Rémi Fronzes, Patrice Polard
Homologous recombination (HR) is a central process of genome biology driven by a conserved recombinase, which catalyses the pairing of single-stranded DNA (ssDNA) with double-stranded DNA to generate a D-loop intermediate. Bacterial RadA is a conserved HR effector acting with RecA recombinase to promote ssDNA integration. The mechanism of this RadA-mediated assistance to RecA is unknown. Here, we report functional and structural analyses of RadA from the human pathogen Streptococcus pneumoniae. RadA is found to facilitate RecA-driven ssDNA recombination over long genomic distances during natural transformation...
May 31, 2017: Nature Communications
https://www.readbyqxmd.com/read/28559174/prospective-multicenter-study-of-endovascular-repair-of-aortoiliac-and-iliac-aneurysms-using-the-gore-iliac-branch-endoprosthesis
#19
Darren B Schneider, Jon S Matsumura, Jason T Lee, Brian G Peterson, Rabih A Chaer, Gustavo S Oderich
OBJECTIVE: The GORE EXCLUDER Iliac Branch Endoprosthesis (IBE; W. L. Gore and Associates, Flagstaff, Ariz) is an iliac branch stent graft system designed to preserve internal iliac artery perfusion during endovascular repair of aortoiliac aneurysms (AIAs) and common iliac artery (CIA) aneurysms (CIAAs). We report the 6-month primary end point results of the IBE 12-04 United States pivotal trial for endovascular treatment of AIAs and CIAAs using the IBE device. METHODS: The trial prospectively enrolled 63 patients with AIA or CIAA who underwent implantation of the IBE device at 28 centers in the United States from 2013 to 2015...
May 27, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28534963/n-acetylglucosaminyltransferase-iva-promotes-invasion-of-choriocarcinoma
#20
Kimihiro Nishino, Eiko Yamamoto, Kaoru Niimi, Yoko Sekiya, Yoriko Yamashita, Fumitaka Kikkawa
Gestational trophoblastic neoplasia (GTN) results from the malignant transformation of placental trophoblasts which secrete human chorionic gonadotropin (hCG) as do normal placenta or hydatidiform mole. N-acetylglucosaminyltransferase IV (GnT-IV) is a glycosyltransferase which catalyses the formation of β1,4GlcNAc branches on the mannose core of N-glycans. Previous studies reported that β1,4GlcNAc branches on hCG were detected in GTN but not in normal pregnancy or hydatidiform mole. The aim of the present study was to understand the role of GnT-IVa in choriocarcinoma and find the target proteins for GnT-IVa glycosylation which contribute to the malignancy of choriocarcinoma...
May 23, 2017: Oncology Reports
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