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https://www.readbyqxmd.com/read/29242407/central-role-of-the-p53-pathway-in-the-noncoding-rna-response-to-oxidative-stress
#1
Paola Fuschi, Matteo Carrara, Christine Voellenkle, Jose Manuel Garcia-Manteiga, Paolo Righini, Biagina Maimone, Elena Sangalli, Francesco Villa, Claudia Specchia, Mario Picozza, Giovanni Nano, Carlo Gaetano, Gaia Spinetti, Annibale A Puca, Alessandra Magenta, Fabio Martelli
Oxidative stress plays a fundamental role in many conditions. Specifically, redox imbalance inhibits endothelial cell (EC) growth, inducing cell death and senescence. We used global transcriptome profiling to investigate the involvement of noncoding-RNAs in these phenotypes. By RNA-sequencing, transcriptome changes were analyzed in human ECs exposed to H2O2, highlighting a pivotal role of p53-signaling. Bioinformatic analysis and validation in p53-silenced ECs, identified several p53-targets among both mRNAs and long noncoding-RNAs (lncRNAs), including MALAT1 and NEAT1...
December 12, 2017: Aging
https://www.readbyqxmd.com/read/29242066/external-polytetrafluoroethylene-reinforcement-of-varicose-autologous-vein-grafts-in-peripheral-bypass-surgery-produces-durable-bypass-function
#2
Achim Neufang, Christine Espinola-Klein, Savvas Savvidis, Walther Schmiedt, Alicia Poplawski, Christian Friedrich Vahl, Bernhard Dorweiler
OBJECTIVE: Use of autologous veins as peripheral bypass graft may become critical in the presence of significant varicose degeneration of the harvested vein. External support of such dilated veins with standard polytetrafluoroethylene (PTFE) prostheses was recommended as an option to use these veins for peripheral bypass. A single-center experience with this technique regarding long-term graft function, secondary reinterventions, and potential graft degeneration is presented. METHODS: Between January 1995 and January 2006, there were 54 patients with varicose veins who underwent 57 consecutive infrainguinal vein bypass operations with PTFE reinforcement in 57 limbs...
December 11, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29242062/rationale-and-design-of-the-sail-trial-for-intramuscular-injection-of-allogeneic-mesenchymal-stromal-cells-in-no-option-critical-limb-ischemia
#3
Joep G J Wijnand, Martin Teraa, Hendrik Gremmels, Femke C C van Rhijn-Brouwer, Gert J de Borst, Marianne C Verhaar
BACKGROUND: Critical limb ischemia (CLI) represents the most severe form of peripheral artery disease and has an immense impact on quality of life, morbidity, and mortality. A considerable proportion of CLI patients are ineligible for revascularization, leaving amputation as the only option. Mesenchymal stromal cells (MSCs), because of their vasculoregenerative and immunomodulatory characteristics, have emerged as a potential new treatment. METHODS: The primary objective of this trial is to investigate whether intramuscular administration of allogeneic bone marrow (BM)-derived MSCs is safe and potentially effective...
December 11, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29240587/reclaiming-autologous-amputated-tissue-for-limb-salvage-of-a-diabetic-foot-burn-with-underlying-critical-limb-ischemia
#4
Catherine N Tchanque-Fossuo, Andrew M Wishy, Kaitlyn I M West, David L Dawson, Sara E Dahle, John G Carson
BACKGROUND: Diabetes mellitus is a worldwide pandemic that impacts more than 387 million people, with 29 million individuals affected in the United States alone. Diabetic patients have a 25% lifetime risk of developing a diabetic foot ulcer (DFU). Having a DFU is associated with a risk of recurrence approaching 70%. In addition, 1 in 6 patients with DFU will have a lower-limb amputation, with an associated increase in mortality ranging from 47% to 70%. Therefore, limb salvage is critical in patients with DFU...
January 2018: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29237360/endovascular-treatment-of-thromboangiitis-obliterans-buerger-s-disease
#5
Mohammad-Hadi S Modaghegh, Shahab Hafezi
PURPOSE: When critical limb ischemia (CLI) occurs in patients with thromboangiitis obliterans (TAO) or Buerger's disease, smoking cessation alone may be insufficient to relieve rest pain and promote wound healing. Accordingly, adjunctive measures are warranted to restore adequate blood flow required for limb salvage. This study aimed to evaluate the feasibility and efficacy of percutaneous transluminal angioplasty (PTA) for the treatment of patients with TAO and CLI. In addition, a review of the literature on endovascular management of TAO is included...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29236326/knockdown-of-ski-decreased-the-reactive-astrocytes-proliferation-in-vitro-induced-by-oxygen-glucose-deprivation-reoxygenation
#6
Xin Zhao, Kai-Sheng Zhou, Zhong-Hao Li, Wei Nan, Jing Wang, Ya-Yi Xia, Hai-Hong Zhang
Glia scar is a pathological marker in late phase of brain ischemia disease, which constitutes a major physical biochemical barrier to impede axonal regrowth. Astrocytes are known to be critically involved in the formation of glial scar. However, their response to ischemia and their role in neuroprotection after central nervous system (CNS) injury are not completely clear. Recently, we have demonstrated for the first time that Ski was up-regulated in reactive astrocytes after spinal cord injury in vivo and in vitro, which indicates Ski may be a new molecule that control astrocytes biologic properties after CNS injury...
December 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29233979/extracellular-vesicles-from-human-induced-pluripotent-stem-cell-derived-mesenchymal-stromal-cells-hipsc-mscs-protect-against-renal-ischemia-reperfusion-injury-via-delivering-specificity-protein-sp1-and-transcriptional-activating-of-sphingosine-kinase-1-and
#7
Xiaodong Yuan, Dawei Li, Xiaosong Chen, Conghui Han, Longmei Xu, Tao Huang, Zhen Dong, Ming Zhang
Renal ischemia-reperfusion is a main cause of acute kidney injury (AKI), which is associated with high mortality. Here we show that extracellular vesicles (EVs) secreted from hiPSC-MSCs play a critical role in protection against renal I/R injury. hiPSC-MSCs-EVs can fuse with renal cells and deliver SP1 into target cells, subsequently active SK1 expression and increase S1P formation. Chromatin immunoprecipitation (ChIP) analyses and luciferase assay were used to confirm SP1 binds directly to the SK1 promoter region and promote promoter activity...
December 11, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29232210/response-percutaneous-vascular-interventions-versus-bypass-surgeries-in-patients-with-critical-limb-ischemia
#8
Chi Shu, Jiarong Wang, Yazhou He, Jichun Zhao
No abstract text is available yet for this article.
December 11, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/29228704/role-of-hif-1a-in-regulating-autophagic-cell-survival-during-cerebral-ischemia-reperfusion-in-rats
#9
Yongqing Guo
Hypoxia-inducible factor-1a (HIF-1a) plays a beneficial role during cerebral ischemia reperfusion (IR), but the underlying molecular mechanisms are not completely understood. Here, we aimed to investigate the effects and molecular regulation of HIF-1a on brain cell apoptosis and autophagy during IR. We found that augmentation of HIF-1a in re-perfused hematopoietic cells significantly reduced brain damage, alleviated brain edema and improved neural function during IR, seemingly through two HIF-1a target genes BNIP3 and NIX, which were critical regulators for cell apoptosis and autophagic cell survival...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228603/elevating-vegf-a-and-pdgf-bb-secretion-by-salidroside-enhances-neoangiogenesis-in-diabetic-hind-limb-ischemia
#10
Agnes Dwi Ariyanti, Julita Sisjayawan, Jing Zhang, Jian-Qi Zhang, Gui-Xue Wang, Makoto Miyagishi, Shou-Rong Wu, Vivi Kasim
Hind-limb ischemia (HLI) is one of the major complication of diabetic patients. Angiogenesis potential in diabetic patients is severely disrupted, and the mechanism underlying it has not been fully elucidated, making it an obstacle for developing an efficient therapeutic angiogenesis strategy. Skeletal muscle cells, through their paracrine function, had been known to be critical for neoangiogenesis. Here we found that hyperglycemia upregulates the expression of skeletal muscle cells prolyl hydroxylase domain 3 (PHD3), which resulted in the decrease of the secretion of angiogenic factors, especially VEGF-A and PDGF-BB...
November 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/29227345/response-percutaneous-vascular-interventions-versus-bypass-surgeries-in-patients-with-critical-limb-ischemia
#11
Sharath C V Paravastu, Shannon D Thomas, Ramon L Varcoe
No abstract text is available yet for this article.
December 7, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/29226477/cell-therapy-for-critical-limb-ischemia-an-integrated-review-of-pre-clinical-and-clinical-studies
#12
REVIEW
Mohammad Qadura, Daniella C Terenzi, Subodh Verma, Mohammed Al-Omran, David A Hess
Critical limb ischemia (CLI), the most severe form of peripheral artery disease, is characterized by pain at rest and non-healing ulcers in the lower extremities. For patients with CLI, where the extent of atherosclerotic artery occlusion is too severe for surgical bypass or percutaneous interventions, limb amputation remains the only treatment option. Thus, cell-based therapy to restore perfusion and promote wound healing in patients with CLI is under intense investigation. Despite promising preclinical studies in animal models, transplantation of bone marrow (BM) derived cell populations in patients with CLI has shown limited benefit preventing limb amputation...
December 11, 2017: Stem Cells
https://www.readbyqxmd.com/read/29224944/use-of-the-wound-ischemia-foot-infection-classification-system-in-hemodialysis-patients-after-endovascular-treatment-for-critical-limb-ischemia
#13
Takahiro Tokuda, Keisuke Hirano, Yasunari Sakamoto, Shisuke Mori, Norihiro Kobayashi, Motoharu Araki, Masahiro Yamawaki, Yoshiaki Ito
OBJECTIVE: The Wound, Ischemia, foot Infection (WIfI) classification system is used to predict the amputation risk in patients with critical limb ischemia (CLI). The validity of the WIfI classification system for hemodialysis (HD) patients with CLI is still unknown. This single-center study evaluated the prognostic value of WIfI stages in HD patients with CLI who had been treated with endovascular therapy (EVT). METHODS: A retrospective analysis was performed of collected data on CLI patients treated with EVT between April 2007 and December 2015...
December 7, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29224939/the-association-of-statin-therapy-with-the-primary-patency-of-femoral-and-popliteal-artery-stents
#14
Derek de Grijs, Pedro Teixeira, Steven Katz
OBJECTIVE: It has long been known that hydroxymethylglutaryl-coenzyme A reductase inhibitors (statins) broadly reduce cardiovascular events in patients with peripheral vascular disease. It was the goal of this study to determine whether there is an association between statin therapy and primary patency after stenting of superficial femoral and popliteal arteries. METHODS: The records of all patients undergoing primary nitinol stenting of the femoral and popliteal arteries at a single institution and by a single surgeon during a 10-year period were reviewed...
December 7, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29224103/sex-differences-and-role-of-estradiol-in-hypoglycemia-associated-counter-regulation
#15
Karen P Briski, Hussain N Alhamami, Ayed Alshamrani, Santosh K Mandal, Manita Shakya, Mostafa H H Ibrahim
Vital nerve cell functions, including maintenance of transmembrane voltage and information transfer, occur at high energy expense. Inadequate provision of the obligate metabolic fuel glucose exposes neurons to risk of dysfunction or injury. Clinical hypoglycemia rarely occurs in nondiabetic individuals but is an unfortunate regular occurrence in patients with type 1 or advanced insulin-treated type 2 diabetes mellitus. Requisite strict glycemic control, involving treatment with insulin, sulfonylureas, or glinides, can cause frequent episodes of iatrogenic hypoglycemia due to defective counter-regulation, including reduced glycemic thresholds and diminished magnitude of motor responses...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29221961/prevalence-of-high-on-treatment-aspirin-and-clopidogrel-platelet-reactivity-in-patients-with-critical-limb-ischemia
#16
Leonardo C Clavijo, Noor Al-Asady, Ashwat Dhillon, Ray V Matthews, Jorge Caro, Han Tun, Vincent Rowe, David M Shavelle
OBJECTIVES: The goal of this study is to establish the prevalence of high on-treatment platelet reactivity to aspirin (HPRA) and clopidogrel (HPRC) in patients with critical limb ischemia (CLI). BACKGROUND: CLI is associated with an increased risk of death and cardiovascular events. Unlike other patient populations with atherosclerotic cardiovascular disease, previous studies failed to demonstrate a benefit of antiplatelet therapy in patients with CLI. METHODS: From June 2014 to November 2016, we performed platelet reactivity studies for P2Y12 and thromboxane A2 (TXA2) inhibition in 100 CLI patients receiving daily treatment with aspirin and clopidogrel...
October 28, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29219030/laser-atherectomy-combined-with-drug-coated-balloon-angioplasty-is-associated-with-improved-1-year-outcomes-for-treatment-of-femoropopliteal-in-stent-restenosis
#17
Damianos G Kokkinidis, Prio Hossain, Omar Jawaid, Bejan Alvandi, T Raymond Foley, Gagan D Singh, Stephen W Waldo, John R Laird, Ehrin J Armstrong
PURPOSE: To examine whether laser atherectomy combined with drug-coated balloons (laser + DCB) can improve the outcomes of femoropopliteal (FP) in-stent restenosis (ISR). METHODS: A dual-center retrospective study was conducted of 112 consecutive patients (mean age 70.3┬▒10.6 years; 86 men) with Tosaka class II (n=29; diffuse stenosis) or III (n=83; occlusion) FP-ISR lesions. Sixty-two patients (mean age 68.5┬▒10 years; 51 men) underwent laser + DCB while the other 50 patients (mean age 72...
December 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/29218290/critical-upper-limb-ischemia-due-to-brachial-tourniquet-in-misdiagnosed-thoracic-outlet-syndrome-after-carpal-tunnel-decompression-a-case-report
#18
Cesare Tiengo, Andrea Monticelli, Stefano Bonvini, Valentina Wassermann, Erica Dalla Venezia, Franco Bassetto
We present the case of a 68-year-old woman, referred to our department for critical upper limb ischemia, which had occurred a few days after homolateral surgical ligamentotomy for carpal tunnel syndrome, diagnosed and confirmed by electromyography, and performed with a brachial tourniquet. The patient was later admitted for subsequent progressive necrosis of the first three fingers of the left hand, accompanied by signs of upper limb ischemia. An accessory cervical rib was identified, completely obliterating the subclavian artery distally at the origin of the suprascapular artery...
September 2017: World Journal of Plastic Surgery
https://www.readbyqxmd.com/read/29217449/role-of-brachial-artery-ligation-bal-in-management-of-prosthetic-arterio-venous-graft-infections
#19
A R Chandrashekar, Chetan R Hoskatti, Sanjay C Desai, Rajendra B Prasad
CONTEXT: Arterio-Venous Graft (AVG) infections can present as major life-threatening hemorrhage or sepsis in a chronic kidney disease patient. Frequently all these patients present in critical condition which need prompt and expeditious management. Various procedures are described for management of infected grafts and its bleeding complications. However these procedures are associated with postop-operative bleeding and persistent infection. AIM: To study brachial artery ligation near the elbow joint in the management of an infected AV graft...
December 4, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29217446/the-use-of-the-profunda-femoral-artery-as-the-sole-target-vessel-to-bypass-aorto-iliac-disease-in-patients-with-critical-limb-ischemia-and-concomitant-unreconstructable-infra-inguinal-disease
#20
Nikolaos Kontopodis, Stella Lioudaki, Christos Chronis, Paris Kalogerakos, George Lazopoulos, Alexandra Papaioannou, Christos V Ioannou
BACKGROUND: Critical limb ischemia (CLI) often results from multilevel occlusive disease. There are occasions where a patent profunda femoral artery (PFA) is the only target artery that can be used as outflow during reconstruction to bypass aorto-iliac disease (AOID), with no further option for infra-inguinal revascularization. We aim to report results of the use of PFA as the sole target vessel for the treatment of these patients. METHODS: This is a retrospective, single-center study including CLI patients treated during 36-months...
December 4, 2017: Annals of Vascular Surgery
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