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Relevant bibliographies by topics / Graft from

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Academic literature on the topic 'Graft from'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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Journal articles on the topic "Graft from"

1

Ali, Ahsan T., Christopher Bell, J. Gregory Modrall, R. James Valentine, and G. Patrick Clagett. "Graft-associated hemorrhage from femoropopliteal vein grafts." Journal of Vascular Surgery 42, no. 4 (2005): 667–72. http://dx.doi.org/10.1016/j.jvs.2005.06.002.

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2

Di Zazzo, Antonio, Sang-Mok Lee, Jaemyoung Sung, et al. "Variable Responses to Corneal Grafts: Insights from Immunology and Systems Biology." Journal of Clinical Medicine 9, no. 2 (2020): 586. http://dx.doi.org/10.3390/jcm9020586.

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Corneal grafts interact with their hosts via complex immunobiological processes that sometimes lead to graft failure. Prediction of graft failure is often a tedious task due to the genetic and nongenetic heterogeneity of patients. As in other areas of medicine, a reliable prediction method would impact therapeutic decision-making in corneal transplantation. Valuable insights into the clinically observed heterogeneity of host responses to corneal grafts have emerged from multidisciplinary approaches, including genomics analyses, mechanical studies, immunobiology, and theoretical modeling. Here, we review the emerging concepts, tools, and new biomarkers that may allow for the prediction of graft survival.

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3

Sonnery-Cottet, Bertrand, Adnan Saithna, Maxime Cavalier, et al. "Anterolateral Ligament Reconstruction Is Associated With Significantly Reduced ACL Graft Rupture Rates at a Minimum Follow-up of 2 Years: A Prospective Comparative Study of 502 Patients From the SANTI Study Group." American Journal of Sports Medicine 45, no. 7 (2017): 1547–57. http://dx.doi.org/10.1177/0363546516686057.

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Background: Graft failure and low rates of return to sport are major concerns after anterior cruciate ligament (ACL) reconstruction, particularly in a population at risk. Purpose: To evaluate the association between reconstruction techniques and subsequent graft rupture and return-to-sport rates in patients aged 16 to 30 years participating in pivoting sports. Study Design: Cohort study; Level of evidence, 2. Methods: A prospective study of patients undergoing primary ACL reconstruction with a bone–patellar tendon–bone (B-PT-B) graft, quadrupled hamstring tendon (4HT) graft, or hamstring tendon graft combined with anterolateral ligament reconstruction (HT+ALL) was conducted by the Scientific ACL NeTwork International (SANTI) Study Group. Survivorship data from Kaplan-Meier analysis were analyzed in multivariate Cox regression models to identify the prognosticators of graft ruptures and return to sport. Results: Five hundred two patients (mean age, 22.4 ± 4.0 years) with a mean follow-up of 38.4 ± 8.5 months (range, 24-54 months) were included. There were 105 B-PT-B, 176 4HT, and 221 HT+ALL grafts. The mean postoperative scores at latest follow-up were the following: Lysholm: 92.4 ± 8.6, Tegner: 7.4 ± 2.1, and subjective International Knee Documentation Committee (IKDC): 86.8 ± 10.5 for B-PT-B grafts; Lysholm: 91.3 ± 9.9, Tegner: 6.6 ± 1.8, and subjective IKDC: 85.4 ± 10.4 for 4HT grafts; and Lysholm: 91.9 ± 10.2, Tegner: 7.0 ± 2.0, and subjective IKDC: 81.8 ± 13.1 for HT+ALL grafts. The mean side-to-side laxity was 0.6 ± 0.9 mm for B-PT-B grafts, 0.6 ± 1.0 mm for 4HT grafts, and 0.5 ± 0.8 mm for HT+ALL grafts. At a mean follow-up of 38.4 months, the graft rupture rates were 10.77% (range, 6.60%-17.32%) for 4HT grafts, 16.77% (range, 9.99%-27.40%) for B-PT-B grafts, and 4.13% (range, 2.17%-7.80%) for HT+ALL grafts. The rate of graft failure with HT+ALL grafts was 2.5 times less than with B-PT-B grafts (hazard ratio [HR], 0.393; 95% CI, 0.153-0.953) and 3.1 times less than with 4HT grafts (HR, 0.327; 95% CI, 0.130-0.758). There was no significant difference in the graft failure rate between 4HT and B-PT-B grafts (HR, 1.204; 95% CI, 0.555-2.663). Other prognosticators of graft failure included age ≤25 years ( P = .012) and a preoperative side-to-side laxity >7 mm ( P = .018). The HT+ALL graft was associated with higher odds of returning to preinjury levels of sport than the 4HT graft (odds ratio [OR], 1.938; 95% CI, 1.174-3.224) but not compared with the B-PT-B graft (OR, 1.460; 95% CI, 0.813-2.613). Conclusion: In a high-risk population of young patients participating in pivoting sports, the rate of graft failure with HT+ALL grafts was 2.5 times less than with B-PT-B grafts and 3.1 times less than with 4HT grafts. The HT+ALL graft is also associated with greater odds of returning to preinjury levels of sport when compared with the 4HT graft.

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Santos Silva, João, Anne Olland, Gilbert Massard, and Pierre-Emmanuel Falcoz. "In lung transplantation, are pulmonary grafts from donors deceased from hanging as suitable as grafts from donors deceased from other causes?" Interactive CardioVascular and Thoracic Surgery 30, no. 1 (2019): 30–32. http://dx.doi.org/10.1093/icvts/ivz218.

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Abstract A best evidence topic was constructed according to a structured protocol. The question addressed was whether pulmonary grafts from donors deceased from hanging offer the same benefit as grafts from donors deceased from other causes in lung transplantation. Of the 17 papers found, 4 provided the best evidence to answer the question. The authors, date, journal, country of publication, study type, group studied, relevant outcomes and results of these papers are tabulated. One study reported a large cohort of donors and analysed the outcomes by cause of death, reporting no differences in survival. The remaining 3 papers analysed observational studies on the outcomes of lung transplantation using pulmonary grafts from donors deceased from hanging, compared with donors deceased from other causes. No differences in the rates of post-transplantation pulmonary graft dysfunction and long-term overall survival were reported. Although the cohort of donors deceased from hanging is small, we conclude that these donors are an important contribution to the donor pool. Ex vivo lung perfusion may have a role in assessing graft viability in this scenario.

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Yang, Hsiao Yun, Shae-Lee Cox, Graham Jenkin, Jock Findlay, Alan Trounson, and Jillian Shaw. "Graft site and gonadotrophin stimulation influences the number and quality of oocytes from murine ovarian tissue grafts." Reproduction 131, no. 5 (2006): 851–59. http://dx.doi.org/10.1530/rep.1.00916.

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Ovarian tissue cryopreservation and subsequent transplantation can restore fertility in cancer patients. This study used a mouse ovarian grafting model to investigate whether the graft site (bursal cavity, the kidney capsule or subcutaneous) influences the number, fertilization rate and developmental potential of oocytes recovered from grafts and whether using a standard gonadotrophin stimulation protocol would increase oocyte yield from the grafts. Mouse ovarian tissue was grafted into four week old mice and collected three weeks later. Graft recipients were treated either with or without exogenous gonadotrophin stimulation prior to graft collection. Grafted ovaries yielded oocytes that were either at the germinal vesicle (GV) stage or mature metaphase II (MII) stage at collection. These GV oocytes were matured beforein vitrofertilization (IVF), while the MII oocytes underwent IVF immediately. Oocytes collected from the oviducts of non-grafted superovulated mice of the same age served as controls. Two-cell embryos were transferred to pseudopregnant recipients and recovered at day 15 of gestation or left to go to term. Graft retrieval and the number of oocytes from each graft were lowest from the subcutaneous graft site. The number of two-cell embryos produced was significantly higher for oocytes from the grafts to the bursa as compared with the other sites. All graft sites gave rise to embryos with comparable implantation rates and developmental potential to fetuses and offspring following transfer. However, the oocytes from grafted ovaries had a significantly lower developmental potential when compared with the control group. Stimulation with exogenous gonadotrophins did not significantly increase oocyte yield from grafted ovaries but did enhance oocyte maturation and development. In conclusion, graft site affects the number and quality of oocytes produced from ovarian grafts.

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Lyman, Donald J., Jacqueline Murray-Wijelath, Esteban Ambrad-Chalela, and Errol S. Wijelath. "Vascular graft healing. II. FTIR analysis of polyester graft samples from implanted bi-grafts." Journal of Biomedical Materials Research 58, no. 3 (2001): 221–37. http://dx.doi.org/10.1002/1097-4636(2001)58:3<221::aid-jbm1011>3.0.co;2-v.

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7

Gage, Shawn M., Michael Lawson, Craig Nichols, Dalton Sycks, Roberto J. Manson, and Joseph A. Knight. "An immediate access dialysis graft designed to prevent needle-related complications: Results from the initial pre-clinical studies." Journal of Vascular Access 21, no. 3 (2019): 328–35. http://dx.doi.org/10.1177/1129729819874987.

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Introduction: No technology has been specifically developed with the intent to reduce needle-related vascular access injuries; a significant source of complications and abandonment. We present the initial pre-clinical study results of a novel, self-sealing, immediate cannulation dialysis graft that aims to prevent needle-related complications; to promote safe, reliable needle access; to reduce catheter use; and could facilitate home hemodialyisis. Methods: The innovative graft design consists of two cannulation chambers with self-sealing properties and materials that prevent side and back wall needle puncture. Study and control grafts (expanded polytetrafluoroethylene) were implanted in one pig and 10 sheep in two studies over the course of 1 year. First cannulation occurred immediately post implant for all study grafts. Post-cannulation time to hemostasis, hematoma and seroma formation, infection, and patency were recorded. Results: The two studies account for nearly 60 weeks (average 6.4 weeks/graft) of study graft follow-up. In the ovine study, average study graft time to hemostasis was 27.3 s (standard deviation = 26.3, range = 0–120), and the control averaged 177.2 s (standard deviation = 113.4, range = 60–600), p < 0.0001. Secondary patency was 75% and 67% for the study and control grafts, respectively. Neither study nor control groups experienced seroma, graft infections, or deaths. Discussion: All novel grafts in the studies were implanted successfully and functioned as intended. There were no complications related to tunneling of the study graft and the chamber prevented back/side wall needle injury. This novel technology may help to mitigate these needle-related complications, while allowing for early/immediate cannulation which could also reduce catheter contact time.

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Sherris, David A., and Eugene B. Kern. "The Versatile Autogenous Rib Graft in Septorhinoplasty." American Journal of Rhinology 12, no. 3 (1998): 221–28. http://dx.doi.org/10.2500/105065898781390136.

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In the graft depleted revision rhinoplasty patient and the patient with major tissue needs, alternatives to septal and conchal cartilage grafts are needed. The costal cartilage graft and rib bone/costal cartilage combination graft are excellent alternatives. In this study 14 patients received 40 grafts from 20 autogenous ribs harvested during septorhinoplasty. Materials were harvested for use as septal replacement grafts, cantilevered grafts, dorsal onlay grafts, columellar struts, and tip grafts. Patient followup was 6 to 31 months, and no evidence of graft resorption or warpage was evident during that period. Complications of harvest were minimal, and harvest techniques are detailed.

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Hashimoto, Koji. "Liver graft from donation after circulatory death donor: Real practice to improve graft viability." Clinical and Molecular Hepatology 26, no. 4 (2020): 401–10. http://dx.doi.org/10.3350/cmh.2020.0072.

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Donation after circulatory death (DCD) is an increasing source of liver grafts for transplantation, yet outcomes have been inferior compared to donation after brain death liver transplantation. These worse outcomes are mainly due to the severe graft injury resulting from mandatory warm ischemia during DCD organ recovery. New evidence, however, indicates that improved donor selection and surgical techniques can decrease the risk of graft failure and ischemic cholangiopathy (IC). Under current best practices, DCD organs are retrieved with the super-rapid technique, optimizing timing and protecting the liver graft from detrimental warm ischemia. Graft viability is influenced by both the quantity and quality of warm ischemia, which is unique to each donor and causes various degrees of pathophysiologic consequences. Evidence also shows that the choice of preservation solution and premortem heparin administration influences graft viability. Additionally, although the precise mechanism of IC remains unknown, stasis of blood during donor warm ischemia may cause the formation of microthrombi in the peribiliary vascular plexus and ischemia of the bile duct. Importantly, thrombolytic protocols show a possible preventive modality for IC. Finally, while <i>ex vivo</i> machine perfusion technology has gained an interest in DCD liver transplantation, further studies are necessary to evaluate the effectiveness of this evolving field to improve graft quality and transplant outcomes.

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10

Lin, Chia-Hsun, Yen-Yang Chen, Chai-Hock Chua, and Ming-Jen Lu. "Endovascular stent-graft treatment for graft-vein anastomotic stenosis in haemodialysis patients with arteriovenous grafts." Vasa 44, no. 6 (2015): 466–72. http://dx.doi.org/10.1024/0301-1526/a000470.

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Abstract. Background: In this study, we investigated the patency of endovascular stent grafts in haemodialysis patients with arteriovenous grafts, the modes of patency loss, and the risk factors for re-intervention. Patients and methods: Haemodialysis patients with graft-vein anastomotic stenosis of their arteriovenous grafts who were treated with endovascular stent-grafts between 2008 and 2013 were entered into this retrospective study. Primary and secondary patency, modes of patency loss, and risk factors for intervention were recorded. Results: Cumulative circuit primary patency rates decreased from 40.0 % at 6 months to 7.3 % at 24 months. Cumulative target lesion primary patency rates decreased from 72.1 % at 6 months to 22.0 % at 24 months. Cumulative secondary patency rates decreased from 81.3 % at 12 months to 31.6 % at 36 months. Patients with a history of cerebrovascular accident had a significantly higher risk of secondary patency loss, and graft puncture site stenosis jeopardised the results of stent-graft treatment. Conclusions: Our data can help to improve outcomes in haemodialysis patients treated with stent-grafts for venous anastomosis of an arteriovenous graft.

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Dissertations / Theses on the topic "Graft from"

1

Kee, R. Andrew. "Synthesis and characterization of arborescent graft copolymers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ60542.pdf.

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2

Khadir, Abderrahim. "Applications and novel syntheses of arborescent graft copolymers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0004/NQ44768.pdf.

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Koh, Mickey Boon Chai. "Alloantigen specific T cell depletion from stem cell grafts for the prevention of graft versus host disease." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.392696.

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4

Isarov, Sergey A. "Protein-Polymer Conjugates via Graft-From Ring-Opening Metathesis Polymerization." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1427750335.

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5

Sendorek, Jerzy George. "Rheological properties of long-chain branched chlorinated poly(isobutylene-co-isoprene)-graft-polybutadiene terpolymers (CIIR-g-BR)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0008/NQ30643.pdf.

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6

Goudie, Beth Ann. "The transition from hospital to home following coronary artery bypass graft surgery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq22742.pdf.

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7

Wang, Tiffany. "Local delivery of FTY720 from tissue derived matrices for bone graft integration." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52944.

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Despite advances in bone grafting technology for musculoskeletal injury, re-injury or incomplete healing persists. Efforts to modify bone allografts sing proteins and growth factors show improvement in wound healing outcomes. We use FTY720, an agonist of S1P receptors 1 and 3, to improve bone graft integration through bone regeneration and vascularization. Four methods of delivering FTY720 into a bone defect are described: 1) FTY720 loaded onto a PLAGA-coated bone allograft and implanted in a critical size rat cranial defect; 2) FTY720 loaded onto a PLAGA-coated bone allograft and implanted in a rat tibial defect; 3) FTY720 loaded into a Matrigel plug and injected into a mouse tibial fracture; and 4) FTY720 directly adsorbed to human bone xenografts and implanted in a critical size rat cranial defect. In each of these models, FTY720 release was characterized, and bone regeneration and vascularization was monitored within the defect. Additionally, local tissue composition and immune response was evaluated. The results presented here indicate that FTY720 released locally into the bone defect improved new bone formation and vascularization, promoting improved graft integration.

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Herns, Mary V. "Psychological and social aspects of recovery from coronary artery vein graft surgery." Thesis, University of Surrey, 1988. http://epubs.surrey.ac.uk/844315/.

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The present study sought to improve on previous studies of open-heart surgery patients by taking a broad view of outcome/recovery. A group of male coronary artery vein graft ('CAVG') patients were followed through from time of referral to six months post-surgery and changes in physical, psychological and social functioning were monitored. The relationships between the different areas of functioning were also examined. Two aspects of psychological function, namely intellectual performance and mood, and three aspects of social function, namely social/leisure, family and work activities, were assessed. Additionally, the beliefs and experiences of the subjects and their spouses relating to the development of heart disease and to recovery from surgery were explored. A single-case research design was used in order to examine and, where possible, explain individual differences in terms of specific patterns of functioning before and after surgery. For the group as a whole, pre- to post-surgery improvements were found in physical functioning and in mood, whereas social/leisure, family and work functioning were apparently unaffected. Post-operative intellectual performance, as measured with a battery of standardised neuropsychological tests, was unimpaired in most cases. There was scare variation in outcome, however, and close examination of the individual cases revealed the importance of such factors as family relationships, social 'buffers', denial and 'hopelessness' in determining the reaction of the individual to the surgery. The findings of the present study were considered to have implications for both further research and for pre- and post-operative interventions with this patient group.

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9

Maclaine, Sarah Elizabeth. "The production of living, tissue engineered, bone graft from progenitor cells using nanotechnology." Thesis, University of Glasgow, 2013. http://theses.gla.ac.uk/4558/.

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The principal aim of this research was the development of a technique (based upon the effects of nanoscale topography) that facilitates the in vitro expansion of bone graft for subsequent implantation. Nanoscale topography increases the bioactivity of a material and stimulates specific responses at the molecular level (third generation biomaterial properties). Nanoscale topography thus confers these third generation properties upon biomaterials that are otherwise first generation (bioinert) or second generation (bioresorbable or bioactive) in nature. Two topographies (nanopits and nanoislands) were embossed into the clinically licensed bioresorbable polymer Polycaprolactone (PCL). A protocol was developed which enabled three dimensional cell culture using double-sided embossing of substrates, seeding of both sides, and vertical positioning of the substrates during cell culture. Human bone marrow was harvested and the mononuclear cell fraction culture expanded. These human bone marrow cells (HBMCs) were used for cellular analysis of substrate bioactivity. In addition, acellular analysis of substrate patterning and degradation was also performed. The osteogenic behaviour (and cell line specificity) was demonstrated using alizarin red staining, immunohistochemistry, real-time polymerase chain reaction (rtPCR), and quantitative PCR (qPCR). The osteogenicity of PCL was increased by the presence of nanotopography, and by the incorporation of hydroxyapatite (HA) into the PCL forming a hydroxyapatite-PCL composite (HAPCL). The performance of these substrates was compared to exposure to bone morphogenic protein 2 (BMP2), and the use of osteogenic media. The protocol from shim production to bone marrow harvesting and vertical cell culture on nanoembossed PCL has been shown to be reproducible and potentially applicable to economical larger scale production.

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10

Kent, Niall William. "Development of a novel in-vivo setting bone graft substitute from bioactive glass." Thesis, Queen Mary, University of London, 2014. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8442.

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Calcium phosphate cements are in-vivo setting, injectable calcium phosphate based biomaterials. They are made of calcium phosphate salts which when mixed with water react to form apatite, the mineral phase of bones and teeth. This study investigates a novel way of forming calcium phosphate cements using bioactive glasses. The aim of the work was to discover a novel route of synthesis using a silicate bioactive glass. Fifteen glass compositions were produced designed to investigate P2O5 content, CaF2 content and calcium to sodium ratio within the glass. Glasses were produced via a melt-quench route before being milled and sieved to below 38 μm. The bioactive glass and Ca(H2PO4)2 powders were mixed in an overall calcium to phosphate ratio of 1.67. The cement powder was then reacted with a 2.5 % solution of Na2HPO4. The paste was then mixed and then placed into cylindrical moulds. Eight samples were immersed into Tris buffer solution for 1 hour, 1 day, 7 days or 28 days. The compressive strength was measured for each specimen as well as SEM performed and the setting times for each composition was studied using the Gilmore needle test. The cement phase was analysed using 31P & 19F MAS-NMR, FTIR and XRD. The results showed that both compressive strength and setting time was dependent upon glass composition. As sodium content was increased both the initial and final setting times decreased. Increased fluoride addition caused a decrease in the setting time. In the fluoride free compositions octacalcium phosphate was identified in all compositions. The cement setting reaction for these compositions followed a similar reaction of first forming dicalcium phosphate dihydrate which transformed to octacalcium phosphate then eventually hydrolysing to hydroxyapatite. When fluoride was incorporated into the cement the phases formed were fluoridated-apatite and DCPD. In conclusion a novel method of producing calcium phosphate cements was discovered using a bioactive glass as a reactive precursor. It was shown that the cement phase, setting time and compressive strength could all be altered by changing the glass composition.

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Books on the topic "Graft from"

1

Saxton, Julie. Polyaromatic graft of polymers from metathesis polymerisation. University of Birmingham, 1992.

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Thomas, Jackie C. Grant Co., Indiana connections: Ancestor charts from Grant Co., Ind. [Selby Pub. & Print., 1988.

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3

Amy Grant: From gospel to pop. Abdo & Daughters, 1992.

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Grant MacEwan's west: Sketches from the past. Western Producer Prairie Books, 1990.

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Corporation, Manpower Demonstration Research, ed. Interim findings from a grant diversion program. Manpower Demonstration Research Corp., 1985.

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St. Hilda's C.E. High School. Application for grant-maintained status from secondary school. Education Directorate, 1994.

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Karpinowitz, Abraham. Di geshikhṭe fun Ṿilner ger-tsedeḳ Graf Ṿalenṭin Poṭotsḳi. Farlag Ṿilner Pinḳes, 1990.

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Karpinowitz, Abraham. Di geshikhṭe fun Ṿilner ger-tsedeḳ Graf Ṿalenṭin Poṭotsḳi. Farlag Ṿilner Pinḳes, 1990.

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Grant, David R. Grant us your peace: Prayers from the lectionary Psalms. Chalice Press, 1998.

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Agassiz, George R. b. 1862., ed. With Grant and Meade from the Wilderness to Appomattox. University of Nebraska Press, 1994.

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Book chapters on the topic "Graft from"

1

Kobayashi, Motoyasu. "Graft Polymerization from Surface." In Encyclopedia of Polymeric Nanomaterials. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29648-2_186.

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Kobayashi, Motoyasu. "Graft Polymerization from Surface." In Encyclopedia of Polymeric Nanomaterials. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-36199-9_186-1.

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Wirth, Uwe. "Between Hybrid and Graft." In From Literature to Cultural Literacy. Palgrave Macmillan UK, 2014. http://dx.doi.org/10.1057/9781137429704_17.

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Rainienė, T., V. Lapšytė, and B. Dainys. "The First Kidney Transplantation from Spouse in Lithuania." In Late Graft Loss. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5434-5_58.

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Xiwen, Bai, Yu Lixin, Ma Junjie, and Xu Jian. "Preventing Cadaveric Grafted Kidney from Acute Rejection with Anti-Thymocyte Globulin." In Late Graft Loss. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5434-5_42.

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Polymenidis, Z., D. Gakis, K. Adam, et al. "Influence of Natural Selection Haplotypes on Longterm Survival in Renal Transplantation from Haploidentical Living Related Donors." In Late Graft Loss. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5434-5_29.

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Daly, William H., and Soo Lee. "Peptide Graft Copolymers from Soluble Aminodeoxycellulose Acetate." In ACS Symposium Series. American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0467.ch012.

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Beathard, Gerald A. "Arteriovenous Thigh Graft Cannulated from Contralateral Side." In Dialysis Access Cases. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-57500-1_26.

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Fanta, George F., Robert C. Burr, and William M. Doane. "Oil Absorbency of Graft Copolymers from Softwood Pulp." In Renewable-Resource Materials. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4613-2205-4_9.

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Kinsky, R. "From Horses to Mice: Graft Rejection and Tolerance." In Realm of Tolerance. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-74712-0_2.

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Conference papers on the topic "Graft from"

1

Pasta, Salvatore, Onur Dur, Jae-Sung Cho, Kerem Pekkan, and David A. Vorp. "Framework for Fluid-Structure Interaction Analysis of Aortic Coarctation Resulting From Proximal Protusion of Thoracic Aortic Stent Graft Into the Arch." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53602.

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Thoracic aortic stent grafts (TASG) are commonly used to repair aortic anomalies or diseases in a minimally-invasive fashion. One complication of TASG is collapse, whereby blood is unable to completely flow through the graft as intended. Most TASG collapses occur in the setting of endovascular repair of traumatic thoracic aortic transection, where a typically smaller diameter aorta of pediatric patients is repaired with a relatively larger diameter endograft designed to treat aneurysmal disease [1]. It is hypothesized that the poor apposition of the leading edge of the proximal stent graft to the lesser curvature of the aortic arch can result increased hemodynamic force at the leading side of the graft can reach sufficient magnitude to cause collapse and gradual occlusion of the tubular graft. The incidence rates of stent graft collapse in endovascular aortic transection repairs have been reported to range from 0.03% to 10% [2].

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2

Kratzberg, Jarin A., William Barnhart, Jafar Golzarian, and Madhavan L. Raghavan. "The Effect of Aortic Endovascular Graft Oversizing on Barb Penetration and Fixation Strength." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-192928.

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Endovascular repair of abdominal aortic aneurysm (AAA), where an endovascular graft (EVG) — a stented vascular graft — is implanted intraluminally into the AAA has shown excellent short term outcome. However, long term outcome of implanted EVGs is fraught with new complications, the most severe of which is endoleak from graft migration, which can lead to re-pressurization of the AAA and potentially rupture. Graft migration is defined as the distal drift of an implanted EVG of 5mm or more from its initial anchor site (Figure 1). There have been many design changes to help decrease the rate of EVG migration including the addition of proximal attachment barbs to grafts to help secure them to the aortic wall. However, studies show that freedom from migration rates have not significantly increased for those grafts containing barbs compared to grafts without barbs [1]. We believe that controlled studies of endovascular graft parameters can lead to improvements in its design that increase graft attachment strength and hence decrease the risk of migration. The aim of the current study was to assess a key design variable in barbed grafts namely, graft oversizing (GO), defined as the ratio of expanded graft dia to aorta dia. We sought to assess the relationship between GO and attachment strength in barbed EVGs. Specifically, we hypothesized that a high GO will impede the ability of the EVG barbs to effectively penetrate the aortic wall.

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Avadhanula, Aditya. "New Polymer Nanotube Design from Graft Polymerization." In ELECTRONIC PROPERTIES OF NOVEL NANOSTRUCTURES: XIX International Winterschool/Euroconference on Electronic Properties of Novel Materials. AIP, 2005. http://dx.doi.org/10.1063/1.2103857.

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Baust, Maximilian, Stefanie Demirci, and Nassir Navab. "Stent graft removal for improving 2D–3D registration." In 2009 IEEE International Symposium on Biomedical Imaging: From Nano to Macro (ISBI). IEEE, 2009. http://dx.doi.org/10.1109/isbi.2009.5193277.

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Costello, James R., Changyi Chen, Don P. Giddens, and Stephen R. Hanson. "The Application of Computational Fluid Dynamics to Define a Relationship Between Wall Shear Stress and Pseudointima Formation Within a Porous ePTFE Graft Implanted Within a Baboon." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-43364.

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Local hemodynamics and wall shear stress (WSS) impact healing of implanted expanded polytetrafluoroethylene (ePTFE) vascular grafts. Since adverse outcomes occur shortly after implantation, we documented the effect of local hemodynamics on short-term healing. We implanted a control or a stenotic ePTFE graft with a 60 μm internodal porosity into the abdominal aorta of 15–20 kg juvenile male baboons. At one month we harvested all grafts using in situ pressure perfusion. We interrogated the local hemodynamics with aid of computational fluid dynamics. We constructed three different geometric grids of the vascular grafts. We defined the first grid based on the material specifications of the graft material. We constructed the second grid by outlining the contours of the graft from the sectioned and stained histologic slides. Lastly, we created the third grid by capturing the graft contours from axial sections of the in vivo grafts acquired with a 1.5 T Phillips® MRI. Using volumetric flow rate and PC-MRI data, we performed steady state and pulsatile simulations. We then correlated the calculated wall shear stress and the measured pseudointima formation. The results demonstrated that high wall shear stress fails to inhibit intimal thickening during short term graft healing.

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Anderson, D. E. J., J. J. Glynn, and M. T. Hinds. "Steady Flow Preconditioning of Endothelial Outgrowth Cells on Ex Vivo and In Vivo ePTFE Grafts." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14206.

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Endothelialization of vascular graft materials is a promising approach for improving the in vivo performance of vascular grafts, particularly for small diameter applications of less than 4 mm. The ability to incorporate a native endothelium onto a graft may reduce the thrombosis and intimal hyperplasia that limits long-term clinical success of these small diameter grafts. Endothelial outgrowth cells (EOCs), which are isolated from whole blood and expand rapidly in vitro, provide an autologous cell source capable of developing into a biologically active endothelial layer. A preconditioning step may enhance EOCs’ performance on vascular grafts. Mature endothelial cells, isolated from vascular walls, are known to decrease expression of pro-thrombotic and pro-inflammatory markers when exposed to steady fluid shear stress, compared to cells under disturbed flow conditions or static culture. This study examined the hypothesis that steady flow preconditioning of EOCs reduces their in vitro markers of thrombosis and inflammation, reduces platelet and fibrin accumulation on EOC–coated ePTFE grafts in an ex vivo shunt, and reduces initial hyperplasia on EOC–coated ePTFE grafts in an in vivo graft implant. This work was performed using well-established, non-human primate models for testing EOC-coated ePTFE grafts ex vivo and in vivo. These conditions represent a clinically-relevant cell source and biomaterial for determining the effects of fluid shear stress preconditioning on graft performance.

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Dryjski, Jacek, Maciej Dryjski, Charles Demuylder, and Th Janssens. "THROMBOGENISITY OF ENDOTHELIAL SEEDED VASCULAR GRAFT." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644803.

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It has recently been suggested that endothelial cell (EC) seeding of vascular grafts surfaces may lead to a less thrombo-genic surface. The present investigation was designed to study the capacity of aortic endothelium and neointima developing on seeded grafts to inactivate thrombin. In order to obtain an optimal surface for EC attachment the lyophylized porcine skin (Zenoderm®, Ethicon, Scotland) were used to form tubular grafts. Grafts seeded with enzymatically derived EC from the jugular vein was compared with control grafts that were shamed seeded with culture medium and blood. Animals with seeded grafts were divided into two groups, one group received dipyridamole treatment, theother one remained untreated. The prosthesis were implanted in the abdominal aorta in 21 dogs. Six dogs died due to different complications after surgery. The remaining 15 were sacrified 2 monthsafter graft implantations. The aorta and the grafts were excised divided into two parts, one was fixed for light and scanning electron microscopy, the otherone was analyzed for capacity to inactivate thrombin which enzymatic activity was assayed by an amiodolytic method. The grafts and aortic segments were exposed for 12 U/ml of thrombin solution. After 10 min incubation the enzyme activity decreased in the supernatant and were found in similar amounts on the grafts and aortic surfaces. Thrombin bound to endothelium was rapidly inhibited after exposure to plasma for 30 sec. In contrast, thrombin retained on the neointima of both seeded and shame seeded grafts were only minor inhibited by plasma. The morphological analyses shown that both seeded and shame seeded grafts developed a thin cellular lining covering up to 100% of the specimens’ surface area. The subcellular layer was equal in all groups. No statistical difference in morphology nor in thrombin inhibiting capacity was noted between dipyridamole treated and untreated animals. It is concluded that both the aorticendothelium and graft neointima can take up thrombin but only aortic endothelium can efficiently inactivate it. Seeding of the grafts with endothelial cellsdid not signifcantly improve its capacity to inhibit activated coagulation enzymes.

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"Chitosan-graft-Polyacrylamide adsorbent for Sulphate removal from water." In 7th International Conference on Latest Trends in Engineering and Technology. International Institute of Engineers, 2015. http://dx.doi.org/10.15242/iie.e1115025.

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Looyenga, Eric M., Aaron M. Propst, and Stephen P. Gent. "Investigating the Effects of Stent-Graft Structural Features Using Computational Fluid Dynamics." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71442.

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The objective of this study was to assess the effects structural features of endovascular stent-grafts used to repair abdominal aortic aneurysms (AAA) have on the flow mechanics and near-wall hemodynamics using Computational Fluid Dynamics (CFD) simulations. This research compared two test case model representations: 1) a stent graft that included the wire struts in the graft walls, and 2) a stent graft that excluded the struts in the computational mesh. The two computer-aided design models were created to represent a bifurcated stent graft in the abdominal aorta, with the stent beginning in the thoracic region of the aorta and branching into the common iliac arteries. The geometries were imported as surface meshes into a commercially available CFD solver. Both models account for viscous pulsatile blood flow of the cardiac cycle using blood properties gathered from previous research. Results of the two simulations were compared by using established metrics, including oscillating shear index (OSI), time average wall shear stress (TAWSS), and relative residence time (RRT), all of which are used to predict the likelihood of clot formation, endothelial damage, and device failure. Scalar and vector scenes allow for visualization, and data was exported for quantifying threshold results of the parameters. Due to the expense of stent grafts and the risks involved with clinical trial, CFD modeling is becoming more prominent in endovascular repair of aneurysms. The overarching goal of this study is to enhance current models of stent grafts, which can potentially be used to complement clinical trial for stent graft development.

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Ramachandra, Abhay B., Sethuraman Sankaran, Jay D. Humphrey, and Alison L. Marsden. "Growth and Remodeling of Vein Graft in an Arterial Environment: Parameter Estimation and Sensitivity Analysis." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14617.

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In coronary artery disease, surgical revascularization using venous bypass grafts is performed to relieve symptoms and prolong life. Coronary bypass graft surgery is performed on approximately 500,000 people every year in the United States, with graft failure rates as high as 50% within 5 years. When a vein graft is implanted in the arterial system it adapts to the high flow rate and high pressure of the arterial environment by changing composition and geometry. Hemodynamics is known to play an active role in growth and remodeling of blood vessels but the complete underlying mechanism of vein graft failure is not well understood. Experiments required to understand this phenomenon can be resource and time intensive. In order to augment the existing knowledge and to guide design and interpretation of experiments that are needed to refine our understanding of vein graft growth and remodeling, computational models of vascular growth and remodeling are used to describe and predict the response of vein grafts to changes in hemodynamic loads. Computational models of growth and remodeling have numerous parameters, and even the inputs from experiments have uncertainties associated with them. There is therefore a need for a systematic approach to estimate the parameters included in growth and remodeling models and to evaluate sensitivity of the quantities of interest to parametric variations.

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Reports on the topic "Graft from"

1

Giorgianni, Kathleen Margaret. Technical Report from Grant Recipient - City of Redlands. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1255526.

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Nicholls, David L., Allen M. Brackley, and Thomas D. Rojas. Alaska's lumber-drying industry—impacts from a federal grant program. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2006. http://dx.doi.org/10.2737/pnw-gtr-683.

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Thorn, Kaila, Rama Radhakrishna, Dan Tobin, Allison Chatrchyan, Joana Chan, and Shorna Allred. Agricultural Barriers to Addressing Climate Change in the Northeastern U.S. USDA Northeast Climate Hub, 2016. http://dx.doi.org/10.32747/2016.6964836.ch.

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Findings from this study provide insight into the barriers that land-grant university research and Extension personnel in the Northeast perceive as most challenging when addressing climate change issues. The respondents of this study represented research faculty, Extension specialists, and Extension educators from the 16 land-grant universities in the Northeastern U.S.

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Thorn, Kaila, Rama Radhakrishna, Dan Tobin, Allison Chatrchyan, Joana Chan, and Shorna Allred. Current Activities and Future Priorities of the Northeast U.S. to Address Climate Impacts in Agriculture. USDA Northeast Climate Hub, 2016. http://dx.doi.org/10.32747/2016.6964837.ch.

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Findings from this study provide insight into the current activities and future priorities that land-grant university research and Extension personnel in the Northeast are conducting to address climate impacts in agriculture. The respondents of this study represented research faculty, Extension specialists, and Extension educators from the 16 land-grant universities in the Northeastern U.S.

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Tong, S. Y., and D. L. Mills. Inelastic electron scattering from surfaces. Progress report for second grant year. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/10123909.

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Thorn, Kaila, Rama Radhakrishna, Dan Tobin, Allison Chatrchyan, Joana Chan, and Shorna Allred. Usefulness of Delivery Methods for Communicating Climate Change Issues: Perspectives of Extension Professional and Research Faculty in the Northeast. USDA Northeast Climate Hub, 2016. http://dx.doi.org/10.32747/2016.6964835.ch.

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Findings from this study provide insight into the delivery methods that land-grant university research and Extension personnel in the Northeast perceive as most effective to disseminate information as well as to change practices or behaviors related to climate change. The respondents of this study represented research faculty, Extension specialists, and Extension educators from the 16 land-grant universities in the Northeastern U.S.

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Bettinger, Eric, Oded Gurantz, Laura Kawano, and Bruce Sacerdote. The Long Run Impacts of Merit Aid: Evidence from California’s Cal Grant. National Bureau of Economic Research, 2016. http://dx.doi.org/10.3386/w22347.

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Tanaka, Toyoichi. Gels for molecular recognition, accumulation and release. Final report, grant from DOE. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/809202.

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McCormick, J. Publications resulting from research supported in whole or in part by this grant. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/5599513.

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Hansmann, Ulrich H. E. Final report for Conference Support Grant "From Computational Biophysics to Systems Biology - CBSB12". Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1059268.

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