keyword
MENU ▼
Read by QxMD icon Read
search

Vein harvesting

keyword
https://www.readbyqxmd.com/read/29159905/autologous-mesenchymal-stem-cell-and-islet-cotransplantation-safety-and-efficacy
#1
Hongjun Wang, Charlie Strange, Paul J Nietert, Jingjing Wang, Taylor L Turnbull, Colleen Cloud, Stefanie Owczarski, Betsy Shuford, Tara Duke, Gary Gilkeson, Louis Luttrell, Kathie Hermayer, Jyotika Fernandes, David B Adams, Katherine A Morgan
Islet engraftment after transplantation is impaired by high rates of islet/β cell death caused by cellular stressors and poor graft vascularization. We studied whether cotransplantation of ex vivo expanded autologous bone marrow-derived mesenchymal stem cells (MSCs) with islets is safe and beneficial in chronic pancreatitis patients undergoing total pancreatectomy with islet autotransplantation. MSCs were harvested from the bone marrow of three islet autotransplantation patients and expanded at our current Good Manufacturing Practices (cGMP) facility...
November 21, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29149984/corneal-xenotransplantation-from-pig-to-rhesus-monkey-no-signs-of-transmission-of-endogenous-porcine-retroviruses
#2
A Li, Y Zhang, Y Liu, Z Pan
BACKGROUND: Xenotransplantations of pig corneas have become an attractive alternative to human corneas. Such xenotransplantations carry the danger, however, of transmission of porcine endogenous retroviruses (PERVs). Here, we investigated whether porcine corneas harbor viral DNA and RNA and whether transplantation to a nonhuman primate would lead to host PERV infection. METHODS: Monkey vein endothelial cells (MVECs) were inoculated with porcine aortic endothelial cell (PAEC) supernatants, and DNA and total RNA of MVECs were tested for PERV by polymerase chain reaction (PCR) and reverse transcription PCR (RT-PCR) assays...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29137378/trastuzumab-distribution-in-an-in-vivo-and-in-vitro-model-of-brain-metastases-of-breast-cancer
#3
Tori B Terrell-Hall, Mohamed Ismail Nounou, Fatema El-Amrawy, Jessica I G Griffith, Paul R Lockman
Background: Drug and antibody delivery to brain metastases has been highly debated in the literature. The blood-tumor barrier (BTB) is more permeable than the blood-brain barrier (BBB), and has shown to have highly functioning efflux transporters and barrier properties, which limits delivery of targeted therapies. Methods: We characterized the permeability of (125)I-trastuzumab in an in-vivo, and fluorescent trastuzumab-Rhodamine123 (t-Rho123) in a novel microfluidic in-vitro, BBB and BTB brain metastases of breast cancer model...
October 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/29136730/-application-of-the-descending-branch-of-the-lateral-circumflex-femoral-artery-in-the-coronary-artery-bypass-grafting-operation
#4
X J Luo, W Wang, Y T Wang, Y Yang, H Li, X Wang, S S Hu
Objective: To investigate the technical method for harvesting and application of the descending branch of the lateral circumflex femoral artery (DBLCFA) in the coronary artery bypass grafting (CABG) operation. Methods: Between December 2016 and April 2017, 19 patients were arranged to use DBLCFA and got CT angiography (CTA) of pelvic and femoral arteries pre-operative at Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College. Finally, DBLCFA was harvested in 16 patients (including 2 female patients, with a mean age of (47...
November 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29136654/vascular-surgical-stretch-injury-leads-to-activation-of-p2x7-receptors-and-impaired-endothelial-function
#5
Padmini Komalavilas, Weifeng Luo, Christy M Guth, Olukemi Jolayemi, Rachel I Bartelson, Joyce Cheung-Flynn, Colleen M Brophy
A viable vascular endothelial layer prevents vasomotor dysfunction, thrombosis, inflammation, and intimal hyperplasia. Injury to the endothelium occurs during harvest and "back table" preparation of human saphenous vein prior to implantation as an arterial bypass conduit. A subfailure overstretch model of rat aorta was used to show that subfailure stretch injury of vascular tissue leads to impaired endothelial-dependent relaxation. Stretch-induced impaired relaxation was mitigated by treatment with purinergic P2X7 receptor (P2X7R) inhibitors, brilliant blue FCF (FCF) and A740003, or apyrase, an enzyme that catalyzes the hydrolysis of ATP...
2017: PloS One
https://www.readbyqxmd.com/read/29130662/-the-role-of-bone-morphogenic-protein-4-in-the-progression-of-vein-graft-hyperplastic-remodeling-under-hyperglycemic-condition
#6
Deng-Feng Fang, Hong-Wei Zhang, Jun Gu, Kang-Jun Fan, Huai-Min Liang, Jia-Yu Shen, Er-Yong Zhang, Jia Hu
OBJECTIVE: This study was designed to assess the vessel wall characteristics and the expression levels of bone morphogenic protein4(BMP4) and proliferating cell antigen Ki67 in vein grafts harvested from diabetic rats,and to investigate the role of BMP4 in progression of vein graft hyperplastic remodeling under hyperglycemic condition. METHODS: 48 male SpragueDawky rats [body mass (194±16) g] aged 8 weeks were randomly divided into diabetes mellitus (DM) group ( n=24) and nondiabetes mellitus (NDM) group ( n=24)...
September 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29102747/endoscopic-versus-open-great-saphenous-vein-harvesting-for-femoral-to-popliteal-artery-bypass
#7
Aleem K Mirza, Kendall Stauffer, Mark D Fleming, Randall De Martino, Gustavo Oderich, Manju Kalra, Peter Gloviczki, Thomas Bower
OBJECTIVE: Conflicting data exist on outcomes of open vein harvest (OVH) and endoscopic vein harvest (EVH) for infrainguinal bypass. The purpose of this study was to compare outcomes between OVH and EVH in femoral to popliteal artery bypasses. METHODS: A retrospective review was performed of all patients undergoing common femoral to popliteal artery bypass with great saphenous vein between January 1997 and June 2014. Bypasses using arm or composite vein were excluded, as were those performed for popliteal artery aneurysms or trauma...
November 1, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29082657/segmental-branching-pattern-of-the-left-portal-vein-anatomical-characteristics-and-clinical-implications
#8
Haythem Najah, Houssem Ammar, Rahul Gupt, Moncef Hamdoun, Abdelwaheb Morjane, Mongi Mighri, Sadok Sassi
INTRODUCTION: The existing knowledge on anatomy of segmental branches of left portal vein (LPV) is limited. This study aims to describe the surgical anatomy and variations of LPV and its segmental branching pattern. MATERIALS AND METHODS: Forty fresh cadaveric liver dissections were performed. The dissection of LPV was carried out from its emergence at the level of the portal vein bifurcation to its segmental branches penetrating the left hemiliver. LPV characteristics, the number and situation of its segmental branches were recorded...
October 30, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/29081492/tissue-engineered-small-vessel-conduits-the-anti-thrombotic-effect-of-re-endothelialization-of-decellularized-baboon-arteries-a-preliminary-experimental-study
#9
Muriel Meiring, Mmakgabu Khemisi, Leana Laker, Pascal M Dohmen, Francis E Smit
BACKGROUND The use of decellularized biological scaffolds for the reconstruction of small-diameter vascular grafts remains a challenge in tissue engineering. Thrombogenicity is an important cause of obstruction in these vessels due to decellularization. Seeding of the decellularized vascular constructs with endothelial cells is therefore a prerequisite for the prevention of thrombosis. The aim of this study was to seed decellularized baboon arteries with endothelial cells and to compare the thrombogenicity to that of decellularized arteries after circulation of blood...
October 30, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/29079734/limiting-injury-during-saphenous-vein-graft-preparation-for-coronary-arterial-bypass-prevents-metabolic-decompensation
#10
Joyce Cheung-Flynn, Jun Song, Igor Voskresensky, Eric S Wise, Yapu Liu, Yanhua Xiong, Susan S Eagle, Colleen M Brophy, C Robb Flynn
Standard harvest and preparation of human saphenous vein (HSV) for autologous coronary and peripheral arterial bypass procedures is associated with injury and increased oxidative stress that negatively affect graft performance. In this study we investigated the global metabolomic profiles of HSV before (unprepared; UP) and after standard vein graft preparation (AP). AP-HSV showed impaired vasomotor function that was associated with increased oxidative stress, phospholipid hydrolysis and energy depletion that are characteristic of mechanical and chemical injury...
October 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29071157/looking-beyond-oral-mucosa-initial-results-of-everted-saphenous-vein-graft-urethroplasty-esvgu-in-long-anterior-urethral-strictures
#11
Arif Akhtar, Nikhil Khattar, Hemant Goel, Swatantra Rao, Raman Tanwar, Rajeev Sood
OBJECTIVE: To prospectively evaluate the feasibility and initial results of an everted saphenous vein graft (eSVG) as a dorsolateral onlay, in patients with long anterior urethral strictures and/or chronic tobacco users. PATIENTS AND METHODS: In all, 20 patients with long anterior urethral strictures (>7 cm) and/or chronic tobacco exposed oral mucosa were included in the study. The harvested SVG was hydro-distended, detubularised, and everted. Substitution urethroplasty using an eSVG was performed using a dorsolateral onlay technique...
September 2017: Arab Journal of Urology
https://www.readbyqxmd.com/read/29068920/five-steps-to-internal-mammary-vessel-preparation-in-less-than-15-minutes
#12
Nicholas T Haddock, Sumeet S Teotia
BACKGROUND: Modern breast reconstruction often involves microvascular reconstruction. The most common recipient vessels are the internal mammary artery and vein. Recently, there has been great focus on efficiency, but much of this emphasis has been directed to faster flap harvest or recovery protocols for expeditious discharge. An equally important aspect is internal mammary vessel preparation. METHODS: Breast reconstruction was performed in 415 patients (715 breasts) using autologous tissue (850 flaps) from 2012 to 2016...
November 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29064925/lower-extremity-free-flaps-for-breast-reconstruction
#13
REVIEW
Joseph H Dayan, Robert J Allen
Thigh-based flaps are typically a secondary option for breast reconstruction because of concerns regarding limited tissue volume and donor-site morbidity. In recent years, there have been a number of new techniques and insights that have resulted in greater flexibility and improved outcomes. This article reviews lessons learned from a large collective experience using the following 4 flaps: transverse upper gracilis also known as transverse myocutaneous gracilis, diagonal upper gracilis, profunda artery perforator, and lateral thigh perforator flaps...
November 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29042988/toll-like-receptor-2-and-dectin-1-function-as-promising-biomarker-for-aspergillus-fumigatus-infection
#14
Peng-Peng Zhang, Xiao-Feng Xin, Xiao-Yong Xu, Li-Ping Fang, Jie Wu, Yi Shi
In recent years, along with the wide application of organ transplantation and immunosuppressive agents, as well as the abuse of broad spectrum antibiotics, the incidence of invasive fungal infections has been increasing gradually. The present study aimed to identify novel biomarkers in cells infected with Aspergillus fumigatus. Human umbilical vein endothelial cells (HUVECs) were infected with Aspergillus fumigatus and then harvested at different time-points (0, 1, 2, 4 and 6 h). The expression Toll-like receptor 2 (TLR2) and dectin-1 expression were examined using flow cytometry and western blotting, and fluorescence-based microscopy was used to evaluate their distribution...
October 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29030347/extracellular-matrix-proteomics-reveals-interplay-of-aggrecan-and-aggrecanases-in-vascular-remodeling-of-stented-coronary-arteries
#15
Gonca Suna, Wojciech Wojakowski, Marc Lynch, Javier Barallobre-Barreiro, Xiaoke Yin, Ursula Mayr, Ferheen Baig, Ruifang Lu, Marika Fava, Robert Hayward, Chris Molenaar, Stephen J White, Tomasz Roleder, Krzysztof Milewski, Pawel Gasior, Piotr P Buszman, Pawel E Buszman, Marjan Jahangiri, Cathy Shanahan, Jonathan M Hill, Manuel Mayr
Background -Extracellular matrix (ECM) remodeling contributes to in-stent restenosis and thrombosis. Despite its important clinical implications little is known about ECM changes post-stent implantation. Methods -Bare-metal (BMS) and drug-eluting stents (DES) were implanted in pig coronary arteries with an overstretch under optical coherence tomography guidance. Stented segments were harvested 1, 3, 7, 14 and 28 days post-stenting for proteomics analysis of the media and neointima. Results -A total of 151 ECM and ECM-associated proteins were identified by mass spectrometry...
October 13, 2017: Circulation
https://www.readbyqxmd.com/read/29028651/endoscopic-conduit-harvest-in-coronary-artery-bypass-grafting-surgery-an-ismics-systematic-review-and-consensus-conference-statements
#16
Francis D Ferdinand, John K MacDonald, Husam H Balkhy, Gianluigi Bisleri, Ho Young Hwang, Patricia Northrup, Richard H J Trimlett, Lai Wei, Bob B Kiaii
OBJECTIVE: The purpose of this consensus conference was to develop and update evidence-informed consensus statements and recommendations on harvesting saphenous vein and radial artery via an open as compared with endoscopic technique by systematically reviewing and performing a meta-analysis of randomized and nonrandomized clinical trials. METHODS: All randomized controlled trials and nonrandomized controlled trials included in the first the International Society for Minimally Invasive Cardiothoracic Surgery Consensus Conference and Statements, in 2005 up to November 30, 2015, were included in a systematic review and meta-analysis...
September 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29023350/an-artificial-cadaveric-leg-blood-flow-system-for-endoscopic-vein-harvesting-simulation
#17
Constantine L Karras, Emily A DeDonato, Kaitlin K DiBartola, Jin-Cheng Zhao
Despite being the most common training model for endoscopic vein harvesting, cadaveric legs are limited by their absence of blood flow, resulting in a faded vascular appearance. Because the saphenous vein and the surrounding tissue seem less distinguishable, dissection of the saphenous vein and bipolar coagulation of its branches becomes increasingly inefficient and difficult. An inexpensive artificial blood flow system was developed to overcome this limitation. A cadaveric leg was thawed to a soft and yielding degree, and the saphenous vein was dissected medial and proximal to the medial malleolus...
September 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29016381/randomized-study-comparing-the-effect-of-carbon-dioxide-insufflation-on-veins-using-2-types-of-endoscopic-and-open-vein-harvesting
#18
Bhuvaneswari Krishnamoorthy, William R Critchley, Janesh Nair, Ignacio Malagon, John Carey, James B Barnard, Paul D Waterworth, Rajamiyer V Venkateswaran, James E Fildes, Ann L Caress, Nizar Yonan
OBJECTIVE: The aim of the study was to assess whether the use of carbon dioxide insufflation has any impact on integrity of long saphenous vein comparing 2 types of endoscopic vein harvesting and traditional open vein harvesting. METHODS: A total of 301 patients were prospectively randomized into 3 groups. Group 1 control arm of open vein harvesting (n = 101), group 2 closed tunnel (carbon dioxide) endoscopic vein harvesting (n = 100) and Group 3 open tunnel (carbon dioxide) endoscopic vein harvesting (open tunnel endoscopic vein harvesting) (n = 100)...
September 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28978278/vascularization-of-the-arterio-venous-loop-in-a-rat-isolation-chamber-model-quantification-of-hypoxia-and-evaluation-of-its-effects
#19
Quan Yuan, Andreas Arkudas, Raymund E Horch, Matthias Hammon, Oliver Bleiziffer, Michael Uder, Hannes Seuss
Introduction The aim of this study was to analyze the three-dimensional distribution of hypoxia in the arterio-venous (AV) loop model in rats, by examining the distribution of hypoxia-inducible factor-1 alpha (HIF-1α). Materials and Methods AV loops were created from the femoral artery and vein of male Lewis rats and an interpositional graft from the contralateral femoral vein. This arteriovenous fistula was embedded in a fibrin-filled isolation chamber and subcutaneously implanted into the thigh. The specimens were harvested after 7 days (n=4), 10 days (n=5) and 14 days (n=4)...
October 5, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28974831/comparing-the-effects-of-krebs-plus-verapamil-solution-on-endothelial-function-of-harvested-human-greater-saphenous-vein-with-heparinized-blood-an-invitro-study
#20
Mitra Shokri, Reza Moradpour, Majid Malekzade Shafaroudi, Nourollah Rezaei, Shervin Ziabakhsh Tabary
INTRODUCTION: Integrity of the great saphenous vein (GSV) endothelium is the most important key element for long-term patency rate of grafts in coronary artery bypass graft (CABG). Storage solutions play an important role in maintaining viability of vein endothelium. Diminished nitric oxide (NO) because of endothelial dysfunction may facilitate vascular inflammation and formation of atherosclerotic plaque. AIM: So, we decided to find a reasonable alternative preservative solution instead of heparinized blood (HB) by measuring NO concentration with Griess assay...
June 2017: Medical Archives
keyword
keyword
6578
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"