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排序方式: 共有101条查询结果,搜索用时 265 毫秒
1.
Acute Cellular Rejection with CD20-Positive Lymphoid Clusters in Kidney Transplant Patients Following Lymphocyte Depletion 总被引:1,自引:0,他引:1
L. K. Kayler F. G. Lakkis C. Morgan A. Basu D. Blisard H. P. Tan J. McCauley C. Wu R. Shapiro P. S. Randhawa 《American journal of transplantation》2007,7(4):949-954
Lymphoid clusters (LC) containing CD20-positive B cells in kidney allografts undergoing acute cellular rejection (ACR) have been identified in small studies as a prognostic factor for glucocorticoid resistance and graft loss. Allograft biopsies obtained during the first episode of ACR in 120 recipients were evaluated for LC, immunostained with CD20 antibody, and correlated with conventional histopathologic criteria, response to treatment and outcome. LC were found in 71 (59%) of the 120 biopsies. All contained CD20 positive B cells that accounted for 5-90% of the LC leukocyte content. The incidence of LC was highest in the patients who had no lymphoid depletion or had been treated with Thymoglobulin preconditioning (79% vs. 75%, respectively) compared to 37% in patients pretreated with Campath (p = 0.0001). Banff 1a/1b ACR were more frequent in the LC-positive than the LC-negative group (96% vs. 80%, respectively; p = 0.0051). With a posttransplant follow-up of 953 +/- 430 days, no significant differences were detected between LC-postitive and LC-negative groups in time to ACR, steroid resistance, serum creatinine and graft loss. CD20+LC did not portend glucocorticoid resistance or worse short to medium term outcomes. CD20+LC may represent a heterogenous collection in which there may be a small still to be fully defined unfavorable subgroup. 相似文献
2.
Arterial blood supply of the patella was demonstrated in 21 cadaver knees by intraarterial injection of radiopaque contrast. When the standard medial parapatellar approach or lateral retinacular release was carried out at a distance of at least 1 cm from the margin of the patella, some steps in total knee arthroplasty caused no impairment and others jeopardized the filling of intraosseous vessels. The radial intraosseous vessels are jeopardized by osteotomy of a deformed patella or excision of fat pad. The prepatellar vessels greatly contribute to intraosseous vascularization and should be carefully preserved. 相似文献
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Amir A. Rahnemai‐Azar Brian F. Gilchrist Liise K. Kayler 《Clinical transplantation》2015,29(5):403-408
Urologic complications are the most frequent technical adverse events following kidney transplantation (KTX). We evaluated traditional and novel potential risk factors for urologic complications following KTX. Consecutive KTX recipients between December 1, 2006 and December 31, 2010 with at least six‐month follow‐up (n = 635) were evaluated for overall urologic complications accounting for donor, recipient, and transplant characteristics using univariate and multivariate logistic regression. Urologic complications occurred in 29 cases (4.6%) at a median of 40 d (range 1–999) post‐transplantation and included 17 ureteral strictures (2.6%), five (0.8%) ureteral obstructions due to donor‐derived stones or intraluminal thrombus, and seven urine leaks (1.1%). All except two complications occurred within the first year of transplantation. Risk factors for urologic complications on univariate analysis were dual KTX (p = 0.04) and renal artery multiplicity (p = 0.02). On multivariate analysis, only renal artery multiplicity remained significant (aHR 2.4, 95% confidence interval 1.1, 5.1, p = 0.02). Donation after cardiac death, non‐mandatory national share kidneys, donor peak serum creatinine > 1.5 mg/dL or creatinine phosphokinase > 1000 IU/L, and donor down time were not associated with urologic complications. Our data suggest that donor artery multiplicity is an independent risk factor for urologic complications following KTX. 相似文献
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Rashi I. Mehta Donald G. Mitchell Liise Kayler Cataldo Doria Diane Bergin Laurence Parker 《Abdominal imaging》2010,35(3):322-327
Background
Presence of a dorsal sector of liver that completely encircles the IVC may increase difficulty of IVC preservation for orthotopic liver transplantation (OLT). We sought to evaluate the incidence of IVC encirclement by hepatic parenchyma using preoperative MRI and CT and its effect on surgical technique and complications. 相似文献8.
Renal transplantations performed using non-heart-beating organ donors: going back to the future? 总被引:1,自引:0,他引:1
Rudich SM Kaplan B Magee JC Arenas JD Punch JD Kayler LK Merion RM Meier-Kriesche HU 《Transplantation》2002,74(12):1715-1720
BACKGROUND: As more expanded-criteria organ donors are used to bridge the widening gap between organ supply and demand, non-heart-beating (NHB) donors will become increasingly important. The purpose of this study was to analyze renal transplant outcomes using this source of cadaveric (CAD) organs and compare the results with heart-beating organ sources. METHODS: Data from 98,698 adult CAD renal transplant recipients and 34,531 living donor renal transplant recipients registered in the U. S. Renal Data System database between January 1993 and June 2000 were analyzed. Kaplan-Meier survival curves were used to compare graft and patient survival rates between NHB, CAD, and living donor transplant recipients. Cox proportional hazards models were used to identify risk factors for NHB donor recipients, while adjusting for potential confounding variables. RESULTS: Recipients of NHB donor organs experienced nearly twice the incidence of delayed graft function (DGF) compared with heart-beating donors (42.4% vs. 23.3%, respectively). NHB donor transplants experienced comparable allograft survival when compared with CAD transplants at 6 years (73.2% vs. 72.5%, respectively; P=NS); patient survival was greater at 6 years for NHB compared with CAD renal transplant recipients (80.9% vs. 77.8%, respectively; P=NS). Significant factors for allograft loss for NHB donor organ recipients included the following: organ used for repeat transplants; DGF; donor age older than 35 years; and head trauma as a cause of initial injury (relative risk 2.74, 1.90, 1.78, and 1.41, respectively). CONCLUSIONS: Although exhibiting elevated DGF rates, allograft and patient survival rates of transplants from NHB donor sources are equivalent to those from conventional CAD sources. Donor age, recipient transplant number, female recipient, mechanism of injury, and DGF were the most pertinent variables leading to poor outcomes. 相似文献
9.
Kayler LK Armenti VT Dafoe DC Burke JF Francos GC Ratner LE 《Health care for women international》2005,26(4):285-294
We found that in kidney transplantation, more females donate. We analyzed transplant recipients for patterns of potential donor exclusion and found that equal proportions of male and female potential donors existed among first-degree biological relatives. More male recipients were married and therefore had more spousal potential donors. Among friends and non-first-degree relatives, significantly fewer males offered to donate to females. Equal proportions of female and male potential donors were excluded from donating for medical comorbidities, blood type incompatibility, recipient refusal, and potential donor reluctance. We concluded that female transplant candidates had fewer potential donors among spouses and opposite sex volunteers from friends and non-first-degree relatives. 相似文献
10.
L. K. Kayler J. Magliocca S. Fujita R. D. Kim I. Zendejas A. W. Hemming R. Howard J. D. Schold 《American journal of transplantation》2009,9(1):210-216
Kidneys from small pediatric donors are underutilized. Using data from the Scientific Registry of Transplant Recipients for donors <21 kg in which at least one organ was recovered from 1997 to 2007 (n = 3341), donor and recovery factors were evaluated by multivariate analysis for associations with (a) kidney nonrecovery and (b) transplantation of recovered kidneys. Results: The proportion of kidney recoveries were 55% during liver procurements and 40% during intestine procurements amongst donors <10 kg (p < 0.01) compared to 93% and 88%, respectively, for donors weighing 10–20 kg (p = 0.003). Intestine procurement was independently associated with an 81% greater likelihood of kidney nonrecovery (p < 0.0001) and a 48% lower likelihood of transplantation (p = 0.0004). A multivariate Cox model indicated that single kidney recipients had a 63% higher risk of graft failure compared with en bloc kidney recipients (p < 0.0001); however, concurrent intestine recovery was not a significant risk factor for graft loss. Intestine recovery from donors <21 kg of age is strongly associated with higher kidney nonrecovery and lower transplantation rates. Graft survival is worse with single kidney transplantation, but is not significantly affected by intestine recovery. Small pediatric donors procurement teams should strive to increase kidney recoveries overall and en bloc recoveries in particular. 相似文献