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Vascular injury

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https://www.readbyqxmd.com/read/27936199/circulating-microvesicles-are-elevated-acutely-following-major-burns-injury-and-associated-with-clinical-severity
#1
Kieran P O'Dea, John R Porter, Nikhil Tirlapur, Umar Katbeh, Suveer Singh, Jonathan M Handy, Masao Takata
Microvesicles are cell-derived signaling particles emerging as important mediators and biomarkers of systemic inflammation, but their production in severe burn injury patients has not been described. In this pilot investigation, we measured circulating microvesicle levels following severe burns, with severe sepsis patients as a comparator group. We hypothesized that levels of circulating vascular cell-derived microvesicles are elevated acutely following burns injury, mirroring clinical severity due to the early onset and prevalence of systemic inflammatory response syndrome (SIRS) in these patients...
2016: PloS One
https://www.readbyqxmd.com/read/27933336/shp-1-activation-inhibits-vascular-smooth-muscle-cell-proliferation-and-intimal-hyperplasia-in-a-rodent-model-of-insulin-resistance-and-diabetes
#2
Weier Qi, Qian Li, Chong Wee Liew, Christian Rask-Madsen, Samuel M Lockhart, Lars Melholt Rasmussen, Yu Xia, Xuanchun Wang, Mogher Khamaisi, Kevin Croce, George L King
AIMS/HYPOTHESIS: Accelerated migration and proliferation of vascular smooth muscle cells (VSMCs) enhances arterial restenosis after angioplasty in insulin resistance and diabetes. Elevation of Src homology 2-containing protein tyrosine phosphatase 1 (SHP-1) induces apoptosis in the microvasculature. However, the role of SHP-1 in intimal hyperplasia and restenosis has not been clarified in insulin resistance and diabetes. METHODS: We used a femoral artery wire injury mouse model, rodent models with insulin resistance and diabetes, and patients with type 2 diabetes...
December 9, 2016: Diabetologia
https://www.readbyqxmd.com/read/27932351/telomerase-reverse-transcriptase-deficiency-prevents-neointima-formation-through-chromatin-silencing-of-e2f1-target-genes
#3
Elizabeth B Endorf, Hua Qing, Jun Aono, Naoto Terami, Geneviève Doyon, Eric Hyzny, Karrie L Jones, Hannes M Findeisen, Dennis Bruemmer
OBJECTIVE: Aberrant proliferation of smooth muscle cells (SMC) in response to injury induces pathological vascular remodeling during atherosclerosis and neointima formation. Telomerase is rate limiting for tissue renewal and cell replication; however, the physiological role of telomerase in vascular diseases remains to be determined. The goal of the present study was to determine whether telomerase reverse transcriptase (TERT) affects proliferative vascular remodeling and to define the molecular mechanism by which TERT supports SMC proliferation...
December 8, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/27931776/cd47-deficiency-improves-neurological-outcomes-of-traumatic-brain-injury-in-mice
#4
Song Zhao, Zhanyang Yu, Yu Liu, Yang Bai, Yinghua Jiang, Klaus van Leyen, Yong-Guang Yang, Josephine M Lok, Michael J Whalen, Eng H Lo, Xiaoying Wang
CD47 is a receptor for signal-regulatory protein alpha (SIRPα) in self-recognition by the innate immune system, and a receptor of thrombospondin-1 (TSP-1) contributing to vascular impairment in response to stress. However, the roles of CD47 in traumatic brain injury (TBI) have not been investigated. In this study we aimed to test our hypothesis that CD47 mediates early neutrophil brain infiltration and late brain vascular remodeling after TBI. Mice were subjected to TBI using a controlled cortical impact (CCI) device...
December 5, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27931726/meta-analysis-of-impact-of-diabetes-mellitus-on-outcomes-after-transcatheter-aortic-valve-implantation
#5
Yinghao Sun, Xianbao Liu, Yuxin He, Mengyao Tang, Qifeng Zhu, Xiaobin Xu, Dongyu Guo, Keda Shi, Po Hu, Lihan Wang, Huijia Kong, Jubo Jiang, Xiaoping Lin, Qiyuan Xu, Feng Gao, Jian'an Wang
To date, the impact of diabetes mellitus (DM) on prognosis after transcatheter aortic valve implantation (TAVI) is still contradictory and thus merits further investigation. The purpose of this meta-analysis was to evaluate the impact of DM on outcomes after TAVI. A systematic search of the PubMed database was performed. Primary end points were 30-day and 1-year all-cause mortality after TAVI. Risk ratios (RRs) and 95% CIs were calculated using the random-effect or fixed-effect model, depending on heterogeneity between studies, and p values <0...
November 16, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27931585/resveratrol-ameliorated-vascular-calcification-by-regulating-sirt-1-and-nrf2
#6
P Zhang, Y Li, Y Du, G Li, L Wang, F Zhou
Pathologic vascular calcification is a significant reason for mortality and morbidity in patients who suffer from end-stage renal disease (ESRD). Resveratrol, a scavenger for many free radicals, is a crucial compound for biomedicine. However, the role and mechanism of resveratrol in vascular calcification is still unknown. In this study, to mimic vascular calcification in ESRD, we used β-glyceophosphate to stimulate the rat vascular smooth muscle cells (RASMCs). We investigate the therapeutic role of resveratrol pretreatment in vascular calcification...
December 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27931559/role-of-cardiac-renin-angiotensin-system-in-ischemia-reperfusion-injury-and-preconditioning-of-heart
#7
REVIEW
Vimal Agrawal, Jeetendra Kumar Gupta, Shaiba Sana Qureshi, Vishal Kumar Vishwakarma
Cardio-vascular diseases are the leading cause of morbidity and mortality. Ischemia is a state of oxygen deprivation in tissues, whereas reperfusion is restoration of blood flow in ischemic tissues. Myocardial damage of tissue during reperfusion after ischemic insult is known as myocardial ischemia-reperfusion (I/R) injury. It induces damage to cardiac muscle via increasing expression of oxygen, sodium and calcium ions which are responsible in the activation of proteases and cell death. Heart renin angiotensin system (RAS) plays an important role in the myocardial ischemia and reperfusion injury...
November 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27930948/selective-recruitment-of-non-classical-monocytes-promotes-skeletal-muscle-repair
#8
Cheryl L San Emeterio, Claire E Olingy, Yihsuan Chu, Edward A Botchwey
Regeneration of traumatic defects in skeletal muscle requires the synchronized behavior of multiple cells that participate in repair. The inflammatory cascade that is rapidly initiated after injury serves as a powerful node at which to guide the progression of healing and influence tissue repair. Here, we examine the role that myeloid cells play in the healing of traumatic skeletal muscle injury, and leverage their pro-regenerative functions using local delivery of the immunomodulatory small molecule FTY720...
November 16, 2016: Biomaterials
https://www.readbyqxmd.com/read/27930691/vascular-endothelial-growth-factor-receptor-2-polymorphisms-have-protective-effect-against-the-development-of-tendinopathy-in-volleyball-athletes
#9
José Inácio Salles, Maria Eugenia Leite Duarte, João Matheus Guimarães, Lucas Rafael Lopes, Jessica Vilarinho Cardoso, Diego Pinheiro Aguiar, João Olyntho Machado Neto, Daniel Escorsim Machado, Jamila Alessandra Perini
The aim of the study was to investigate whether genetic variants in VEGF and KDR genes can be correlated with susceptibility of tendinopathy in volleyball athletes. This study was conducted at the Brazilian Volleyball Federation, and comprised 179 volleyball athletes: 88 had a confirmed diagnosis of tendinopathy (cases), whereas 91 had no evidence of the disease (controls). The VEGF (-2578C>A, -460T>C and +936C>T) and KDR (-604C>T, 1192G>A and 1719T>A) polymorphisms were determined by TaqMan real-time polymerase chain reaction...
2016: PloS One
https://www.readbyqxmd.com/read/27927649/cilostazol-inhibits-uremic-toxin-induced-vascular-smooth-muscle-cell-dysfunction-role-of-axl-signaling
#10
Chien-Hsing Lee, Yi-Jen Hung, Yi-Shing Shieh, Chu-Yen Chien, Yu-Juei Hsu, Chih-Yuan Lin, Chi-Fu Chiang, Chia-Luen Huang, Chang-Hsun Hsieh
Chronic kidney disease (CKD) is associated with increased cardiovascular mortality, and vascular smooth muscle cell (VSMC) dysfunction plays a pivotal role in uremic atherosclerosis. Axl signaling is involved in vascular injury and is highly expressed in VSMC. Recent reports have shown that cilostazol, a phosphodiesterase type 3 inhibitor (PDE3), can regulate various stages of the atherosclerotic process. However, the role of cilostazol in uremic vasculopathy remains unclear. This study aimed to identify the effect of cilostazol in VSMCs in the experimental CKD and to investigate whether the regulatory mechanism occurs through Axl signaling...
December 7, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27927648/renin-angiotensin-system-transgenic-mouse-model-recapitulates-pathophysiology-similar-to-human-preeclampsia-with-renal-injury-that-may-be-mediated-through-vegf
#11
J Morgan Denney, Cynthia E Bird, Annette Gendron-Fitzpatrick, Emmanuel Sampene, Ian M Bird, Dinesh M Shah
Using a transgenic cross, we evaluated features of preeclampsia, renal injury and the sFlt1/VEGF changes. Transgenic hAGT and hREN, or wild type (WT) C57Bl/6 mice were cross-bred: ♀hAGT x ♂hREN for preeclampsia (PRE) model and ♀WT x ♂WT for pregnant controls (WTP). Samples were collected for plasma VEGF, sFlt1 and urine albumin. Blood pressures (BP) were monitored by telemetry. Vascular reactivity was investigated by wire myography. Kidneys and placenta were immunostained for sFlt1 and VEGF. Eleven PRE and 9 WTP mice were compared...
December 7, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27927633/nck-associated-protein-1-modulated-by-mirna-214-determines-vascular-smooth-muscle-cell-migration-proliferation-and-neointima-hyperplasia
#12
Tayyab Adeel Afzal, Le Anh Luong, Dan Chen, Cheng Zhang, Feng Yang, Qishan Chen, Weiwei An, Edmund Wilkes, Kenta Yashiro, Pedro R Cutillas, Li Zhang, Qingzhong Xiao
BACKGROUND: MicroRNA miR-214 has been implicated in many biological cellular functions, but the impact of miR-214 and its target genes on vascular smooth muscle cell (VSMC) proliferation, migration, and neointima smooth muscle cell hyperplasia is unknown. METHODS AND RESULTS: Expression of miR-214 was closely regulated by different pathogenic stimuli in VSMCs through a transcriptional mechanism and decreased in response to vascular injury. Overexpression of miR-214 in serum-starved VSMCs significantly decreased VSMC proliferation and migration, whereas knockdown of miR-214 dramatically increased VSMC proliferation and migration...
December 7, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27925201/vascular-inter-regulation-of-inflammation-molecular-and-cellular-targets-for-cns-therapy
#13
REVIEW
Marta Machado-Pereira, Tiago Santos, Liliana Bernardino, Raquel Ferreira
Angiogenesis and inflammation are clearly interconnected and interdependent processes that are dysregulated in a series of systemic and brain pathologies. Herein, key aspects regarding endothelial cell function and tissue remodelling that are particularly affected or aggravated by inflammation are presented. Most importantly, the cellular and molecular mechanisms involved in the vascular regulation of the inflammatory processes occurring in several brain disorders and how they impact on disease/injury progression are detailed, highlighting potential targets for therapy...
December 7, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27924941/progressive-muscle-cell-delivery-as-a-solution-for-volumetric-muscle-defect-repair
#14
Ji Hyun Kim, In Kap Ko, Anthony Atala, James J Yoo
Reconstructing functional volumetric tissue in vivo following implantation remains a critical challenge facing cell-based approaches. Several pre-vascularization approaches have been developed to increase cell viability following implantation. Structural and functional restoration was achieved in a preclinical rodent tissue defect; however, the approach used in this model fails to repair larger (>mm) defects as observed in a clinical setting. We propose an effective cell delivery system utilizing appropriate vascularization at the site of cell implantation that results in volumetric and functional tissue reconstruction...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27924777/can-multidetector-ct-detect-the-site-of-gastrointestinal-tract-injury-in-trauma-a-retrospective-study
#15
Ananya Panda, Atin Kumar, Shivanand Gamanagatti, Ranjita Das, Swati Paliwal, Amit Gupta, Subodh Kumar
PURPOSE: We aimed to assess the performance of computed tomography (CT) in localizing site of traumatic gastrointestinal tract (GIT) injury and determine the diagnostic value of CT signs in site localization. METHODS: CT scans of 97 patients with surgically proven GIT or mesenteric injuries were retrospectively reviewed by radiologists blinded to surgical findings. Diagnosis of either GIT or mesenteric injuries was made. In patients with GIT injuries, site of injury and presence of CT signs such as focal bowel wall hyperenhancement, hypoenhancement, wall discontinuity, wall thickening, extramural air, intramural air, perivisceral infiltration, and active vascular contrast leak were evaluated...
December 7, 2016: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/27924419/beneficial-effect-of-low-level-laser-therapy-in-acute-lung-injury-after-i-i-r-is-dependent-on-the-secretion-of-il-10-and-independent-of-the-tlr-myd88-signaling
#16
J L Carvalho, A Britto, A P Ligeiro de Oliveira, H Castro-Faria-Neto, R Albertini, E Anatriello, F Aimbire
The use of low-level laser for lung inflammation treatment has been evidenced in animal studies as well as clinical trials. The laser action mechanism seems to involve downregulation of neutrophil chemoattractants and transcription factors. Innate immune responses against microorganisms may be mediated by toll-like receptors (TLR). Intestinal ischemia and reperfusion (i-I/R) lead to bacterial product translocation, such as endotoxin, which consequently activates TLRs leading to intestinal and lung inflammation after gut trauma...
December 6, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27923680/the-100-most-cited-manuscripts-in-emergency-abdominal-surgery-a-bibliometric-analysis
#17
Thomas Ellul, Nicholas Bullock, Tarig Abdelrahman, Arfon G M T Powell, Jolene Witherspoon, Wyn G Lewis
BACKGROUND: The number of citations a scientific article receives provides a good indication of its impact within any given field. This bibliometric analysis aimed to identify the 100 most cited articles in Emergency Abdominal Surgery (EAS), to highlight key areas of interest and identify those that have most significantly shaped contemporary clinical practice in this newly evolving surgical specialty. This is of increasing relevance as concerns grow regarding the variable and suboptimal outcomes in Emergency General Surgery...
December 3, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27922956/the-complicated-facial-war-injury-pitfalls-and-mismanagement
#18
Ghassan S Abu-Sittah, Joe Baroud, Christopher Hakim, Cynthia Wakil
OBJECTIVE: The aim of this paper is to share the authors' experience in the management of complicated facial war injuries using free tissue transfer. A discussion on the most commonly encountered pitfalls in management during the acute and complicated settings is presented in an effort to raise insight on facial war wound complications. METHODOLOGY: Two patients of complicated facial war injuries are presented to exemplify the pitfalls in acute and chronic management of the mandibular region in the first patient and the orbito-maxillary region in the second...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27922701/elolyckor-kan-ge-skador-som-visar-sig-efter-l%C3%A3-ng-tid-det-akuta-omh%C3%A3-ndertagandet-kan-vara-avg%C3%A3-rande-p%C3%A3-sikt
#19
Martin Tondel, Anna Blomqvist, Kristina Jakobsson, Tohr Nilsson, Bodil Persson, Sara Thomée, Lars-Gunnar Gunnarsson
Immediate and delayed outcomes after electrical injury. A guide for clinicians In Sweden about 300 electrical injuries are recorded each year at the Swedish National Electrical Safety Board. Most of our knowledge of the health consequences of these arise from clinical case series. Severe electrical injuries have direct thermal effects and may result in ventricular fibrillation, skin burns, as well as muscular and nerve affection. Long-term consequences include pain, vascular symptoms, cognitive and neurological symptoms and signs...
December 1, 2016: Läkartidningen
https://www.readbyqxmd.com/read/27922195/the-neuropeptide-cortistatin-attenuates-experimental-autoimmune-myocarditis-via-inhibition-of-cardiomyogenic-t-cell-driven-inflammatory-responses
#20
Virginia Delgado-Maroto, Clara P Falo, Irene Forte-Lago, Norma Adan, Maria Morell, Elena Maganto-Garcia, Gema Robledo, Francisco O'Valle, Andrew H Lichtman, Elena Gonzalez-Rey, Mario Delgado
BACKGROUND AND PURPOSE: Myocarditis is an inflammatory and autoimmune cardiovascular disease that causes dilated myocardiopathy and is responsible of high morbidity and mortality worldwide. Cortistatin is a neuropeptide produced by neurons and cells of immune and vascular systems. Besides its action in locomotor activity and sleep, cortistatin inhibits inflammation in different experimental models of autoimmune diseases. However, its role in inflammatory cardiovascular disorders is unexplored...
December 6, 2016: British Journal of Pharmacology
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