Background: The purpose of this study was to examine the feasibility and practical application of ultrasound (US) super-resolution imaging (SRI) in evaluating microvasculature and measuring renal allograft function.
Methods: Sixteen consecutive patients who received kidney transplants were prospectively enrolled. The patients were assigned as: normal allograft function (n = 6), and allograft malfunction (n = 10). Localizing each potential contrast signal resulted in super-resolution images (SRI). SRI was utilized to assess micro-vessel density (MVD) and microvascular flow rate, whereas contrast-enhanced (CE) US images were statistically processed to get the time to peak (TTP) and peak intensity. Logistic regression was utilized to evaluate their relationship.
Results: US SRI may be utilized effectively on allografts to show microvasculature with significantly higher resolution than typical color Doppler flow and CEUS pictures. In the multivariate analysis, MVD and TTP were significant US markers of renal allograft failure (p = 0.031 and p = 0.045). The combination of MVD and TTP produced an AUC of 0.783 (p < 0.05) for allograft dysfunction.
Conclusions: SRI can accurately portray the microvasculature of renal allografts, while MVD and TTP are appropriate US markers for assessing renal allograft failure.
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http://dx.doi.org/10.1016/j.heliyon.2024.e36515 | DOI Listing |
Transplant Proc
January 2025
Department of Cardiology, Advanced Heart Failure and Heart Transplant Unit, Hospital Universitario Central de Asturias, Oviedo, Spain; Health Research Institute of Asturias, ISPA, Oviedo, Spain.
Introduction: Real-life data on the long-term use of a maintenance immunosuppressive protocol in heart transplant patients using delayed Everolimus + Tacrolimus are scarce.
Methods: This is a retrospective study that included all heart transplant patients from 2011 to 2021 in two Spanish hospitals. In Hospital A, the preferred immunosuppressive strategy included Everolimus initiation at 2 months post-transplant combined with Tacrolimus and was compared with the results of Hospital B, where a standard Tacrolimus and Mycophenolate mofetil protocol was used.
Am J Case Rep
January 2025
Department of Urology, The University of Hong Kong - Shenzhen Hospital, Shenzhen, Guangdong, China.
BACKGROUND Transplant lithiasis may be rare but poses significant risk to the renal graft function of the recipient. Immediate management is necessitated upon first detection, to prevent further complications. CASE REPORT We report 2 cases of transplant lithiasis that were not treated immediately upon first detection.
View Article and Find Full Text PDFVasc Specialist Int
December 2024
Division of Vascular Surgery, Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.
Major vessel invasion, particularly involving the portal and superior mesenteric veins, poses significant challenges during the radical resection of hepatobiliary and pancreatic cancers. Oncovascular surgery is essential for curative outcomes, and often requires portomesenteric vein reconstruction. Techniques, such as lateral venorrhaphy, patch repair, end-to-end anastomosis, and interposition grafting, have been employed.
View Article and Find Full Text PDFBMC Med Res Methodol
December 2024
Department of Biostatistics, University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Background: Graft loss is a major health concern for kidney transplant (KTx) recipients. It is of clinical interest to develop a prognostic model for both graft function, quantified by estimated glomerular filtration rate (eGFR), and the risk of graft failure. Additionally, the model should be dynamic in the sense that it adapts to accumulating longitudinal information, including time-varying at-risk population, predictor-outcome association, and clinical history.
View Article and Find Full Text PDFCureus
November 2024
Department of Surgery, Rush University Medical Center, Chicago, USA.
Transitional cell carcinoma (TCC) of the urinary tract appears more commonly among the transplant population. The increased incidence of TCC has been primarily associated with the male gender, BK virus (BKV), and smoking. We report a case series and comprehensive review of the literature.
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