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Vein harvesting

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https://www.readbyqxmd.com/read/27916241/no-touch-saphenous-vein-harvesting-may-improve-further-the-patency-of-saphenous-vein-composite-grafts-early-outcomes-and-1-year-angiographic-results
#1
Yong Han Kim, Hong Chul Oh, Jae Woong Choi, Ho Young Hwang, Ki-Bong Kim
BACKGROUND: Harvesting technique and surgical strategy may affect patency rates of saphenous vein (SV) grafts in coronary artery bypass graft surgery (CABG). We evaluated early clinical outcomes and 1-year graft patency rates of SV grafts that were harvested with a no-touch technique and used as composite grafts. METHODS: Three hundred sixty-eight patients who underwent off-pump CABG using SV composite grafts based on the left internal thoracic artery were studied...
December 1, 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27909273/-minimally-invasive-coronary-artery-bypass-grafting-using-bilateral-in-situ-internal-thoracic-arteries
#2
Akihiko Yamauchi, Masaki Tabuchi, Shinya Terada, Keita Kikuchi
A 73-year-old male with diabetes mellitius was referred to our hospital for coronary artery bypass grafting (CABG). Preoperative coronary angiography revealed three-vessel coronary disease. Minimally invasive coronary artery grafting (MICS CABG) via left thoracotomy was selected to decrease surgical site infection due to severe diabetes. In situ bilateral internal thoracic arteries (BITA) were harvested using a long type Harmonic scalpel. In situ right internal thorac artery( RITA)-left anterior descending artery (LAD), in situ left internal thorac artery( LITA)-high lateral branch (HL), and aorta-saphenous vein graft (SVG)-#4 posterior descending artery were performed...
December 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27884396/effects-of-visfatin-on-the-apoptosis-of-intestinal-mucosal-cells-in-immunological-stressed-rats
#3
Ying Zhou, Huai-Rui Yuan, Lu Cui, Abdur Rahman Ansari, Ke Xiao, You Luo, Xin-Tong Wu, Liang Guo, Faheem Ahmed Khan, Zhi Yang, Hui Song
This study was undertaken to determine if visfatin is involved in the inflammation or apoptosis introduced by LPS in rats. Forty 8-week old Wistar rats were divided into four groups (n=10 in each group) and injected with saline, visfatin, LPS and visfatin+LPS co-stimulated via caudal vein. The duodenum, jejunum and ileum were harvested from all the rats. Compared to the saline treated group, visfatin significantly increased the number of TUNEL-positive apoptotic cells and the expression of caspase-3 protein in intestinal mucosa...
November 21, 2016: Acta Histochemica
https://www.readbyqxmd.com/read/27879599/total-human-eye-allotransplantation-developing-surgical-protocols-for-donor-and-recipient-procedures
#4
Edward H Davidson, Eric W Wang, Jenny Y Yu, Juan C Fernandez-Miranda, Dawn J Wang, Nikisha Richards, Maxine Miller, Joel S Schuman, Kia M Washington
BACKGROUND: Vascularized composite allotransplantation of the eye is an appealing, novel method for reconstruction of the nonfunctioning eye. The authors' group has established the first orthotopic model for eye transplantation in the rat. With advancements in immunomodulation strategies together with new therapies in neuroregeneration, parallel development of human surgical protocols is vital for ensuring momentum toward eye transplantation in actual patients. METHODS: Cadaveric donor tissue harvest (n = 8) was performed with orbital exenteration, combined open craniotomy, and endonasal approach to ligate the ophthalmic artery with a cuff of paraclival internal carotid artery, for transection of the optic nerve at the optic chiasm and transection of cranial nerves III to VI and the superior ophthalmic vein at the cavernous sinus...
December 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27879158/potential-of-lysophosphatidylinositol-as-a-prognostic-indicator-of-cardiac-arrest-using-a-rat-model
#5
Junhwan Kim, Tai Yin, Koichiro Shinozaki, Joshua W Lampe, Lance B Becker
AIMS: The potential of a lysophosphatidylinositol species, LPI(18:0), as an biomarker of ischaemia was tested using a rat model of cardiac arrest (CA). METHODS: Male Sprague-Dawley rats were subjected to asphyxia-induced CA or CA followed by cardiopulmonary bypass (CPB) resuscitation. Brain, heart, kidney, and liver tissues were harvested from rats after 0, 5, 10, 20, 30, and 60 min CA and 30 min CA followed by 60 min CPB resuscitation. Blood samples were collected from inferior vena cava and hepatic veins following 30 min CA...
November 23, 2016: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/27876350/a-solution-to-the-vessel-shortage-during-free-vascularized-fibular-grafting-for-reconstructing-infected-bone-defects-of-the-femur-bridging-with-vein-transplantation
#6
Ren Gao-Hong, Li Run-Guang, Jiang Gui-Yong, Chen Chao-Jie, Bao Zhi-Gang
PURPOSE: The present study aimed to evaluate the feasibility and clinical efficacy of bridging vein transplantation to deal with the vessel shortage during free vascularized fibular grafting for reconstructing infected bone defects of the femur. METHODS: Twelve patients (aged 15-58 years) with infected bone defects of the femur (between 6.0 and 18.0cm) were recruited in this study. Vacuum sealing drainage were applied after extensive debridement of the infected bone defects and irrigated with 0...
October 22, 2016: Injury
https://www.readbyqxmd.com/read/27848980/influence-of-leaf-vein-density-and-thickness-on-hydraulic-conductance-and-photosynthesis-in-rice-oryza-sativa-l-during-water-stress
#7
Muhammad Adnan Tabassum, Guanglong Zhu, Abdul Hafeez, Muhammad Atif Wahid, Muhammad Shaban, Yong Li
The leaf venation architecture is an ideal, highly structured and efficient irrigation system in plant leaves. Leaf vein density (LVD) and vein thickness are the two major properties of this system. Leaf laminae carry out photosynthesis to harvest the maximum biological yield. It is still unknown whether the LVD and/or leaf vein thickness determines the plant hydraulic conductance (Kplant) and leaf photosynthetic rate (A). To investigate this topic, the current study was conducted with two varieties under three PEG-induced water deficit stress (PEG-IWDS) levels...
November 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27845962/anatomical-study-of-cutaneous-venous-flow-of-the-palm
#8
Baek-Kyu Kim, Heeyeon Kwon, Nobuaki Imanishi, Hak Chang
BACKGROUNDS: Various flaps elevated from the palm have been widely used for finger and hand reconstruction. Recently, perforator-based free flaps or venous free flaps have received popularity due to several advantages. The cutaneous venous system has been chosen as the circulatory outlet when designing and harvesting the flap from the palmer area due to the small size and thin nature of the flap. However, there have been few descriptions about the anatomy of the palmar cutaneous veins...
November 15, 2016: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/27832865/ghrelin-improves-intestinal-mucosal-atrophy-during-parenteral-nutrition-an-experimental-study
#9
Waka Yamada, Tatsuru Kaji, Shun Onishi, Kazuhiko Nakame, Koji Yamada, Takafumi Kawano, Motoi Mukai, Masakazu Souda, Takako Yoshioka, Akihide Tanimoto, Satoshi Ieiri
BACKGROUND/PURPOSE: Total parenteral nutrition (TPN) has been reported to be associated with mucosal atrophy of the small intestine. Ghrelin has hormonal, orexigenic, and metabolic activities. We investigated whether ghrelin improved intestinal mucosal atrophy using a TPN-supported rat model. METHODS: Rats underwent jugular vein catheterization and were divided into four groups: TPN alone (TPN), TPN plus low-dose ghrelin (TPNLG), TPN plus high-dose ghrelin (TPNHG), and oral feeding with normal chow (OF)...
September 17, 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27823597/frequency-of-deep-vein-thrombosis-and-or-pulmonary-embolism-after-coronary-artery-bypass-grafting-investigation-regardless-of-clinical-suspicion
#10
Vitor B Viana, Emanoel R Melo, Mario Terra-Filho, Luis A Dallan, Maria M Gonzalez, Ludhmila A Hajjar, Fabio B Jatene, Luiz A Cesar, Caio B Vianna
Venous thromboembolism (VTE) includes deep vein thrombosis (DVT) and/or pulmonary embolism (PE). Many surgeons and clinicians believe that VTE after coronary artery bypass grafting (CABG) has little clinical significance because it is seldom diagnosed. This study aimed to identify VTE after CABG, independent of clinical suspicion. In this prospective, observational, single-center study, 100 patients underwent computed tomographic pulmonary angiography (multidetector-64) and lower extremity venous compressive ultrasound after elective CABG...
October 8, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/27821829/-minimally-invasive-coronary-artery-bypass-grafting-using-proximal-anastomoses-device-report-of-a-case
#11
Akihiko Yamauchi, Masaki Tabuchi, Daisuke Toritsuka, Keita Kikuchi
A 68-years-old male with diabetes mellitius (HbA1c 6.5%) was referred for coronary artery bypass grafting(CABG). Preoperative coronary angiography (CAG) signed 3-vessels coronary disease[#2 75 %,#4 posterior descending (PD) 75%,#6 90%,#14 90%]. Minimally invasive coronary artery grafting (MICS CABG) was selected because of faster postoperative recovery than off-pump CABG via a 10 cm left 5th thoracotomy approach. In situ bilateral internal thoracic artery(BITA) and saphenous vein (SVG) was harvested by special manner using long type Harmonic...
November 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27808365/apoptosis-proliferation-and-morphology-during-vein-graft-remodeling-in-rabbits
#12
L Wan, S H Dai, S Q Lai, L Q Liu, Q Wang, H Xu, W J Wang, J C Liu
Neo-intima development and atherosclerosis limit the long-term use of vein grafts for revascularization of ischemic tissues. Recently, studies have confirmed that proliferating cell nuclear antigen (PCNA) plays an important role in cell proliferation. Our research confirmed that 28 days after vein transplantation, PCNA expression increases significantly. Using rabbits, rather than rodents, for a more representative model of human vein grafts, we aimed to establish a time course of changes in cell proliferation and apoptosis using morphometric and immunohistochemical analyses, western blot, terminal deoxynucleotidyl transferase dUTP nick end labeling, and transmission electron microscopy (TEM)...
October 5, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/27793561/detailed-vascular-anatomy-of-the-medial-femoral-condyle-and-the-significance-of-its-use-as-a-free-flap
#13
Laurenz Weitgasser, Sebastian Cotofana, Marion Winkler, Heinz Buerger, Daniel Jamnig, Friedrich Anderhuber, Alexander Gaggl
OBJECTIVE: The aim of this study is to provide detailed information on the arterial variations of the descending geniculate artery (DGA) for the harvest of a cortico-periostal flap from the medial femoral condyle and a fascio-cutaneous perforator flap with its respective pedicles. MATERIAL AND METHODS: A total of 50 lower limbs from embalmed cadavers were dissected. The distribution pattern, length, and diameter of the DGA, saphenous artery (SA), muscular, periostal, and articular branches, and their concomitant veins were measured and evaluated...
October 5, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/27788810/reconstruction-of-the-outflow-tract-in-cross-auxiliary-double-domino-donor-liver-transplantation
#14
W Qu, Z-J Zhu, L Wei, L-Y Sun, Y Liu, Z-G Zeng
BACKGROUND: Auxiliary liver transplantation is accepted as an effective manner to expand the liver donor pool. A difficult surgical technical challenge of the procedure is hepatic vein reconstruction of the graft. METHODS: To resolve this problem, complex techniques are used to perform an innovative outflow tract reconstruction in the world's first cross-auxiliary double-domino donor liver transplantation with two whole liver grafts. The inferior vena cava-sparing hepatectomy technique was applied at harvest in the two domino liver donors...
October 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27788708/-role-of-neutrophils-in-treatment-of-rats-with-d-galactosamine-induced-acute-liver-failure-with-bone-marrow-mesenchymal-stem-cells
#15
X Zhao, X L Shi, Z H Zhang, H C Ma, X W Yuan, Y T Ding
Objective: To investigate the therapeutic effect of bone marrow mesenchymal stromal cell (BMSC) transplantation on D-galactosamine-induced acute liver failure in Sprague-Dawley (SD) rats, as well as the mechanism of neutrophils in this process. Methods: A total of 39 male SD rats were divided into control group (8 rats, intraperitoneal injection of isotonic saline), model group (10 rats, intraperitoneal injection of D-galactosamine), solvent group (9 rats, tail vein injection of isotonic saline at 2 hours after intraperitoneal injection of D-galactosamine), and treatment group (12 rats, tail vein injection of MSCs at 2 hours after intraperitoneal injection of D-galactosamine)...
August 20, 2016: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/27765092/-acute-toxicity-and-bio-distribution-of-silver-nitrate-and-nano-silver-with-different-particle-diameters-in-rats
#16
T Z Li, F Gong, B Y Zhang, J D Sun, T Zhang, L Kong, Y Y Xue, M Tang
Objective: To explore the acute toxic effect and the cumulative target organ of silver nitrate and nano-silver with two different particle diameters in rats. Methods: Thirty-six adult SD rats were divided into small particle size nano-silver group (SNS), large particle size nano-silver group (LNS), silver nitrate group (SN), and control group (C) according to the random number table, with 9 rats in each group. The rats of the four groups were respectively injected with 10 mg/mL nano-silver solution (particle diameter of 20 nm, prepared by saline) in silver dose of 30 mg/kg by tail vein for once, 10 mg/mL nano-silver solution (particle diameter of 100 nm, prepared by saline) in silver dose of 30 mg/kg, 1...
October 20, 2016: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/27764224/the-corm-alf-186-mediates-anti-apoptotic-signaling-via-an-activation-of-the-p38-mapk-after-ischemia-and-reperfusion-injury-in-retinal-ganglion-cells
#17
Felix Ulbrich, Kai B Kaufmann, Alexander Meske, Wolf A Lagrèze, Michael Augustynik, Hartmut Buerkle, Carlos C Ramao, Julia Biermann, Ulrich Goebel
PURPOSE: Ischemia and reperfusion injury may induce apoptosis and lead to sustained tissue damage and loss of function, especially in neuronal organs. While carbon monoxide is known to exert protective effects after various harmful events, the mechanism of carbon monoxide releasing molecules in neuronal tissue has not been investigated yet. We hypothesize that the carbon monoxide releasing molecule (CORM) ALF-186, administered after neuronal ischemia-reperfusion injury (IRI), counteracts retinal apoptosis and its involved signaling pathways and consecutively reduces neuronal tissue damage...
2016: PloS One
https://www.readbyqxmd.com/read/27763268/use-of-brilliant-blue-fcf-during-vein-graft-preparation-inhibits-intimal-hyperplasia
#18
Michael J Osgood, Kevin Sexton, Igor Voskresensky, Kyle Hocking, Jun Song, Padmini Komalavilas, Colleen Brophy, Joyce Cheung-Flynn
BACKGROUND: Intimal hyperplasia remains the primary cause of vein graft failure for the 1 million yearly bypass procedures performed using human saphenous vein (HSV) grafts. This response to injury is caused in part by the harvest and preparation of the conduit. The use of Brilliant Blue FCF (FCF) restores injury-induced loss of function in vascular tissues possibly via inhibition of purinergic receptor signaling. This study investigated whether pretreatment of the vein graft with FCF prevents intimal hyperplasia...
August 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27759615/photochemical-tissue-passivation-attenuates-av-fistula-intimal-hyperplasia
#19
Robert N Goldstone, Michael C McCormack, Rachel L Goldstein, Srivalleesha Mallidi, Mark A Randolph, Michael T Watkins, Robert W Redmond, William G Austen
OBJECTIVE: We hypothesized that decreasing vein compliance would protect the vein against stretch injury and reduce intimal hyperplasia (IH). BACKGROUND: Although arteriovenous fistulas (AVFs) are the criterion standard for vascular access, their effectiveness is limited by poor patency with 40% to 60% failing due to IH. Venous stretch injury from exposure to arterial pressure induces IH. Photochemical tissue passivation (PTP) crosslinks adventitial collagen, decreasing vein compliance to resemble that of an artery...
October 17, 2016: Annals of Surgery
https://www.readbyqxmd.com/read/27747211/subfailure-overstretch-injury-leads-to-reversible-functional-impairment-and-purinergic-p2x7-receptor-activation-in-intact-vascular-tissue
#20
Weifeng Luo, Christy M Guth, Olukemi Jolayemi, Craig L Duvall, Colleen Marie Brophy, Joyce Cheung-Flynn
Vascular stretch injury is associated with blunt trauma, vascular surgical procedures, and harvest of human saphenous vein for use in vascular bypass grafting. A model of subfailure overstretch in rat abdominal aorta was developed to characterize surgical vascular stretch injury. Longitudinal stretch of rat aorta was characterized ex vivo. Stretch to the haptic endpoint, where the tissues would no longer lengthen, occurred at twice the resting length. The stress produced at this length was greater than physiologic mechanical forces but well below the level of mechanical disruption...
2016: Frontiers in Bioengineering and Biotechnology
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