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https://www.readbyqxmd.com/read/28239949/temporal-trends-in-peripheral-arterial-interventions-observations-from-the-blue-cross-blue-shield-of-michigan-cardiovascular-consortium-bmc2-pvi
#1
Michael P Thomas, Yeo Jung Park, Scott Grey, Theodore L Schreiber, Hitinder S Gurm, Dale Leffler, Thomas P Davis, Peter Henke, Paul Michael Grossman
OBJECTIVES: The aim is to examine trends in procedural indication, arterial beds treated, and device usage in peripheral arterial interventions (PVIs). BACKGROUND: There is little data on indication, vascular beds treated and devices utilized for peripheral arterial interventions. METHODS: We used data from 43 hospitals participating in the BMC2 VIC registry. PVIs were separated by year and divided by arterial segment. Lower extremity PVIs were subclassified as having been performed for claudication or critical limb ischemia (CLI)...
February 27, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28235425/therapeutic-strategies-for-cell-based-neovascularization-in-critical-limb-ischemia
#2
REVIEW
Makoto Samura, Tohru Hosoyama, Yuriko Takeuchi, Koji Ueno, Noriyasu Morikage, Kimikazu Hamano
Critical limb ischemia (CLI) causes severe ischemic rest pain, ulcer, and gangrene in the lower limbs. In spite of angioplasty and surgery, CLI patients without suitable artery inflow or enough vascular bed in the lesions are often forced to undergo amputation of a major limb. Cell-based therapeutic angiogenesis has the potential to treat ischemic lesions by promoting the formation of collateral vessel networks and the vascular bed. Peripheral blood mononuclear cells and bone marrow-derived mononuclear cells are the most frequently employed cell types in CLI clinical trials...
February 24, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28217409/muscle-derived-stem-cells-stimulate-muscle-myofiber-repair-and-counteract-fat-infiltration-in-a-diabetic-mouse-model-of-critical-limb-ischemia
#3
J Tsao, I Kovanecz, N Awadalla, R Gelfand, I Sinha-Hikim, R A White, N F Gonzalez-Cadavid
BACKGROUND: Critical Limb Ischemia (CLI) affects patients with Type 2 Diabetes (T2D) and obesity, with high risk of amputation and post-surgical mortality, and no effective medical treatment. Stem cell therapy, mainly with bone marrow mesenchymal, adipose derived, endothelial, hematopoietic, and umbilical cord stem cells, is promising in CLI mouse and rat models and is in clinical trials. Their general focus is on angiogenic repair, with no reports on the alleviation of necrosis, lipofibrosis, and myofiber regeneration in the ischemic muscle, or the use of Muscle Derived Stem Cells (MDSC) alone or in combination with pharmacological adjuvants, in the context of CLI in T2D...
December 2016: Journal of Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28216361/the-effect-of-ambulatory-status-on-outcomes-of-percutaneous-vascular-interventions-and-lower-extremity-bypass-for-critical-limb-ischemia-in-the-vascular-quality-initiative
#4
Kimberly Lu, Alik Farber, Marc L Schermerhorn, Virendra I Patel, Jeffrey A Kalish, Denis Rybin, Gheorghe Doros, Jeffrey J Siracuse
OBJECTIVE: Ambulatory status has been shown to be an important predictor of postoperative morbidity and mortality for a variety of surgical procedures. We sought to assess contemporary practice patterns in treating critical limb ischemia (CLI) and outcomes based on ambulatory status. METHODS: The Vascular Quality Initiative (2010-2015) was queried for patients undergoing percutaneous vascular interventions (PVIs) or lower extremity bypass (LEB) for CLI. Ambulatory status was classified as ambulatory, ambulatory with assistance, and nonambulatory (composite of wheelchair bound and bedridden)...
February 16, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28194186/safety-and-effectiveness-of-bone-marrow-cell-concentrate-in-the-treatment-of-chronic-critical-limb-ischemia-utilizing-a-rapid-point-of-care-system
#5
Venkatesh Ponemone, Saniya Gupta, Dalip Sethi, Manish Suthar, Monika Sharma, Richard J Powell, Kenneth Lee Harris, Nungshi Jungla, Priyadarshini Arambam, Upendra Kaul, Ashok Seth, Suhail Bukhari
Critical limb ischemia (CLI) is the end stage of lower extremity peripheral vascular disease (PVD) in which severe obstruction of blood flow results in ischemic rest pain, ulcers and/or gangrene, and a significant risk of limb loss. This open-label, single-arm feasibility study evaluated the safety and therapeutic effectiveness of autologous bone marrow cell (aBMC) concentrate in revascularization of CLI patients utilizing a rapid point-of-care device. Seventeen (17) no-option CLI patients with ischemic rest pain were enrolled in the study...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28170200/glyoxalase-1-overexpression-reverses-defective-proangiogenic-function-of-diabetic-adipose-derived-stem-cells-in-streptozotocin-induced-diabetic-mice-model-of-critical-limb-ischemia
#6
Zhiyou Peng, Xinrui Yang, Jinbao Qin, Kaichuang Ye, Xin Wang, Huihua Shi, Mier Jiang, Xiaobing Liu, Xinwu Lu
Adipose-derived stem cell (ADSC)-based therapy is promising for critical limb ischemia (CLI) treatment, especially in patients with diabetes. However, the therapeutic effects of diabetic ADSCs (D-ADSCs) are impaired by the diabetes, possibly through intracellular reactive oxygen species (ROS) accumulation. The objective of the present study was to detect whether overexpression of methylglyoxal-metabolizing enzyme glyoxalase-1 (GLO1), which reduces ROS in D-ADSCs, can restore their proangiogenic function in a streptozotocin-induced diabetic mice model of CLI...
January 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28169278/improving-the-therapeutic-efficacy-of-mesenchymal-stromal-cells-to-restore-perfusion-in-critical-limb-ischemia-through-pulsed-focused-ultrasound
#7
Pamela A Tebebi, Saejeong J Kim, Rashida A Williams, Blerta Milo, Victor Frenkel, Scott R Burks, Joseph A Frank
Mesenchymal stem cells (MSC) are promising therapeutics for critical limb ischemia (CLI). Mechanotransduction from pulsed focused ultrasound (pFUS) upregulates local chemoattractants to enhance homing of intravenously (IV)-infused MSC and improve outcomes. This study investigated whether pFUS exposures to skeletal muscle would improve local homing of iv-infused MSCs and their therapeutic efficacy compared to iv-infused MSCs alone. CLI was induced by external iliac arterial cauterization in 10-12-month-old mice...
February 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28153472/conservative-management-of-distal-leg-necrosis-in-lung-transplant-recipients
#8
F Aigner, M Husmann, L C Huber, C Benden, M M Schuurmans
Critical limb ischemia (CLI) with distal leg necrosis in lung transplant recipients (LTR) is associated with a high risk for systemic infection and sepsis. Optimal management of CLI has not been defined so far in LTR. In immunocompetent individuals with leg necrosis, surgical amputation would be indicated and standard care. We report on the outcome of four conservatively managed LTR with distal leg necrosis due to peripheral arterial disease (PAD) with medial calcification of the distal limb vessels. Time interval from lung transplantation to CLI ranged from four years (n = 1) to more than a decade (n = 3)...
January 28, 2017: Journal of Tissue Viability
https://www.readbyqxmd.com/read/28143739/phase-ib-safety-two-dose-study-of-multigeneangio-in-patients-with-chronic-critical-limb-ischemia
#9
Moshe Y Flugelman, Moshe Halak, Boris Yoffe, Jacob Schneiderman, Chen Rubinstein, Allan-Isaac Bloom, Eran Weinmann, Ilya Goldin, Victor Ginzburg, Olga Mayzler, Aaron Hoffman, Belly Koren, Diana Gershtein, Michal Inbar, Marina Hutoran, Adili Tsaba
Critical limb ischemia (CLI) is the most severe presentation of peripheral arterial disease. We developed cell-based therapy entailing intra-arterial injection of autologous venous endothelial cells (ECs) modified to express angiopoietin 1, combined with autologous venous smooth muscle cells (SMCs) modified to express vascular endothelial growth factor. This combination promoted arteriogenesis in animal models and was safe in patients with limiting claudication. In an open-label, phase Ib study, we assessed the safety and efficacy of this therapy in CLI patients who failed or were unsuitable for surgery or intravascular intervention...
January 28, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28133976/gene-based-therapies-in-patients-with-critical-limb-ischemia
#10
Panagiotis Kitrou, Dimitris Karnabatidis, Elias Brountzos, Konstantinos Katsanos, Lazaros Reppas, Stavros Spiliopoulos
Critical limb ischemia (CLI) constitutes a life-limiting and life-threatening disease. Revascularization, either endovascular or surgical, remains the best treatment option accompanied by medication and risk factor modification. Patients unable to undergo revascularization, referred as "no-option patients", have been the center of interest the last few years, subjected to treatment therapies based on proteins (mainly growth factors) involved in angiogenesis via gene delivery to the ischemic tissue. Areas Covered: This review focuses on these growth factors, gives an update of the studies available, discusses the possible problems that influence outcomes and describes future perspectives including possible new technologies that will improve them...
January 28, 2017: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/28131536/dual-antiplatelet-therapy-improves-outcome-in-diabetic-patients-undergoing-endovascular-femoropopliteal-stenting-for-critical-limb-ischaemia
#11
O Thott, F Granath, J Malmstedt, C-M Wahlgren
OBJECTIVE: The purpose of this study was to analyse the effect of dual antiplatelet therapy (DAPT) compared to aspirin on outcome after endovascular interventions in patients with CLI. METHODS: This was a population based retrospective nationwide cohort analysis. Several linked national databases in Sweden: Swedish National Vascular Registry, Prescribed Drug Registry and National Discharge Registry. A total of 1941 patients (median age 79; range 43-103 years; women 58%) were identified with CLI who had undergone primary femoropopliteal endovascular intervention between 2006 and 2012...
January 25, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28126175/risk-factors-for-30-day-unplanned-readmission-following-infrainguinal-endovascular-interventions
#12
Thomas C F Bodewes, Peter A Soden, Klaas H J Ultee, Sara L Zettervall, Alexander B Pothof, Sarah E Deery, Frans L Moll, Marc L Schermerhorn
OBJECTIVE: Unplanned hospital readmissions following surgical interventions are associated with adverse events and contribute to increasing health care costs. Despite numerous studies defining risk factors following lower extremity bypass surgery, evidence regarding readmission after endovascular interventions is limited. This study aimed to identify predictors of 30-day unplanned readmission following infrainguinal endovascular interventions. METHODS: We identified all patients undergoing an infrainguinal endovascular intervention in the targeted vascular module of the American College of Surgeons National Surgical Quality Improvement Program between 2012 and 2014...
February 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28111645/rearrangement-of-bis-alkylidynyl-phosphines-to-phospha-acyls
#13
Annie L Colebatch, Yong-Shen Han, Anthony F Hill, Manab Sharma, Rong Shang, Jas S Ward
A range of bis(alkylidynyl)phosphines RP{C[triple bond, length as m-dash]M(CO)2(Tp*)}2 (M = Mo, W; R = Cl, Ph, Cy; Tp* = hydrotris(dimethylpyrazolyl)borate) are obtained from the reactions of [M([triple bond, length as m-dash]CLi)(CO)2(Tp*)] with Cl2PR or alternatively via the palladium(0)-mediated reactions of [W([triple bond, length as m-dash]CBr)(CO)2(Tp*)] with RPH2 (R = Py, Cy). The complexes RP{C[triple bond, length as m-dash]W(CO)2(Tp*)}2 rearrange slowly (R = Cl) or on heating (R = Ph) to afford the isomeric phospha-acyls [W2(μ:η(1)-C;η(2)-C,P-CCPR)(CO)4(Tp*)2]...
January 23, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28108545/bombesin-antagonist-based-radiotherapy-of-prostate-cancer-combined-with-wst-11-vascular-targeted-photodynamic-therapy
#14
Kwanghee Kim, Hanwen Zhang, Stephen LaRosa, Sylvia Jebiwott, Pooja Desai, Simon Y Kimm, Avigdor J Scherz, Joseph A O'Donoghue, Wolfgang A Weber, Jonathan Coleman
PURPOSE: DOTA-AR, a bombesin-antagonist peptide, has potential clinical application for targeted imaging and therapy in Gastrin Releasing Peptide receptor (GRPr) positive malignancies when conjugated with a radioisotope such as 90Y. This therapeutic potential is limited by the fast washout of the conjugates from the target tumors. WST-11 (Weizmann STeba-11 drug; a negatively charged water-soluble palladium-bacteriochlorophyll derivative, Tookad® Soluble) Vascular targeted photodynamic therapy (VTP) is a local ablation approach recently approved for use in early stage prostate cancer...
January 20, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28108421/tlr4-knockout-attenuated-high-fat-diet-induced-cardiac-dysfunction-via-nf-%C3%AE%C2%BAb-jnk-dependent-activation-of-autophagy
#15
Nan Hu, Yingmei Zhang
Obesity is commonly associated with a low grade systemic inflammation, which may contribute to the onset and development of myocardial remodeling and contractile dysfunction. Toll-like receptor 4 (TLR4) plays an important role in innate immunity and inflammation although its role in high fat diet-induced obesity cardiac dysfunction remains elusive. This study was designed to examine the effect of TLR4 ablation on high fat diet intake-induced cardiac anomalies, if any, and underlying mechanism(s) involved. Wild-type (WT) and TLR4 knockout mice were fed normal or high fat (60% calorie from fat) diet for 12weeks prior to assessment of mechanical and intracellular Ca(2+) properties...
January 17, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28104215/sailing-the-murky-seas-of-endovascular%C3%A2-cli%C3%A2-revascularization-is-wound-blush-our-beacon
#16
EDITORIAL
Andrew J P Klein
No abstract text is available yet for this article.
January 23, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28104214/wound-blush-obtainment-is-the-most%C3%A2-important-angiographic-endpoint-for%C3%A2-wound-healing
#17
Makoto Utsunomiya, Mitsuyoshi Takahara, Osamu Iida, Yasutaka Yamauchi, Daizo Kawasaki, Yoshiaki Yokoi, Yoshimistu Soga, Norihiko Ohura, Masato Nakamura
OBJECTIVES: This study aimed to assess the optimal angiographic endpoint of endovascular therapy (EVT) for wound healing. BACKGROUND: Several reports have demonstrated acceptable patency and limb salvage rates following infrapopliteal interventions for the treatment of critical limb ischemia (CLI). However, the optimal angiographic endpoint of EVT remains unclear. METHODS: We conducted a subanalysis of the prospective multicenter OLIVE (Endovascular Treatment for Infrainguinal Vessels in Patients with Critical Limb Ischemia) registry investigation assessing patients who received infrainguinal EVT for CLI...
January 23, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28100126/everolimus-eluting-stent-for-patients-with-critical-limb-ischemia-and-infrapopliteal-arterial-occlusive-disease
#18
Alessia Giaquinta, Ardita Vincenzo, Ester De Marco, Massimiliano Veroux, Pierfrancesco Veroux
BACKGROUND: Critical limb ischemia (CLI), despite revascularization, may result in minor or major amputations with devastating psychological effects and a negative impact on patient survival. Randomized clinical trials demonstrated that drug-eluting stents improve 1-year primary patency and decrease target lesion revascularization, compared to standard angioplasty and bare-metal stents, in patients with short occlusive below-the-knee lesions. OBJECTIVES: This prospective clinical study was designed to evaluate if one straight-line flow revascularization to the foot, using Xience-Prime Everolimus-Eluting Stent (EES), is an effective treatment of patients in Rutherford-Becker category 4 to 5 with distal popliteal and proximal tibial arteries long occlusive lesions up to 10 cm...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28096194/autologous-cell-therapy-for-peripheral-arterial-disease-systematic-review-and-meta-analysis-of-randomized-non-randomized-and-non-controlled-studies
#19
Mauro Rigato, Matteo Monami, Gian Paolo Fadini
RATIONALE: Critical limb ischemia (CLI) is a life-threatening complication of peripheral arterial disease (PAD). In patients who are ineligible for revascularization procedures, there are few therapeutic alternatives, leading to amputations and death. OBJECTIVE: To provide a systematic review of the literature and a meta-analysis of studies evaluating safety and efficacy of autologous cell therapy for intractable PAD/CLI. METHODS AND RESULTS: We retrieved 19 randomized controlled trials (RCTs; 837 patients), 7 non-randomized trials (338 patients), and 41 non-controlled studies (1,177 patients)...
January 17, 2017: Circulation Research
https://www.readbyqxmd.com/read/28090010/long-term-outcomes-after-percutaneous-lower-extremity-arterial-interventions-with-atherectomy-vs-balloon-angioplasty%C3%A3-propensity-score-matched-registry
#20
Adam Janas, Piotr P Buszman, Krzysztof P Milewski, Szymon Wiernek, Ksenia Janas, Maciej Pruski, Wojciech Wojakowski, Aleksandra Błachut, Wojciech Picheta, Pawel Buszman, Stefan Kiesz
BACKGROUND: The impact of endovascular revascularization of the lower extremity arteries with atherectomy (AT) compared with percutaneous transluminal angioplasty (PTA) is still unclear. Therefore, the aim of the study was to compare long-term outcomes after percutaneous PTA and AT in patients requiring endovascular revascularization.Methods and Results:This was a single-center, retrospective registry of obstructive and symptomatic PAD patients who underwent endovascular revascularization...
February 24, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
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