A simple ex vivo model of human renal allograft preservation using the gonadal vein.

This study describes a simple, reproducible, human model that allows for interrogation of flow effects during ex vivo organ perfusion. MATERIALS AND METHODS: Gonadal veins from deceased human renal allografts were subjected to either static cold storage or hypothermic machine perfusion for up to 24 hours. Caspase-3, Krüppel-like factor 2 expression and electron microscopic analysis were compared between 'flow' and 'no-flow' conditions, with living donor gonadal vein sections serving as negative controls. RESULTS: The increase in caspase-3 expression was less pronounced for hypothermic machine-perfused veins compared with static cold storage (median-fold increase 1.2 vs 2.3; P
Source: Annals of the Royal College of Surgeons of England - Category: Surgery Authors: Tags: Ann R Coll Surg Engl Source Type: research

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This study shows that quantitative perfusion of kidney transplants can be evaluated safely during kidney transplantation. DGF being defined as one or more dialyses after kidney transplantation can only be detected postoperatively, however, it may be predicted intraoperatively. PMID: 31559620 [PubMed - as supplied by publisher]
Source: Zentralblatt fur Chirurgie - Category: Surgery Authors: Tags: Zentralbl Chir Source Type: research
Conclusions. Deceased donor kidneys with diffuse GFT appear to be safe to use given that nearly 92% of recipients in this cohort who received such allografts experienced good clinical outcomes. Histologically, GFT demonstrated rapid resolution following transplantation. Interestingly, diffuse GFT only occurred in donors who suffered severe head trauma in this cohort, which may be a predisposing factor.
Source: Transplantation - Category: Transplant Surgery Tags: Original Clinical Science—General Source Type: research
Abstract BACKGROUND AND OBJECTIVES: Recent developments indicated that functional magnetic resonance imaging (MRI) could potentially provide noninvasive assessment of kidney interstitial fibrosis in patients with kidney diseases, but direct evidence from histopathology is scarce. We aimed to explore the diagnostic utilities of functional MRI for the evaluation of kidney allograft interstitial fibrosis. DESIGN, SETTING, PARTICIPANTS, &MEASUREMENTS: We prospectively examined 103 kidney transplant recipients who underwent for-cause biopsies and 20 biopsy-proven normal subjects with functional MRI. Histomorph...
Source: Clinical Journal of the American Society of Nephrology : CJASN - Category: Urology & Nephrology Authors: Tags: Clin J Am Soc Nephrol Source Type: research
Authors: Yu YM, Ni QQ, Wang ZJ, Chen ML, Zhang LJ Abstract Kidney transplantation is the treatment of choice for patients with end-stage renal disease, as it extends survival and increases quality of life in these patients. However, chronic allograft injury continues to be a major problem, and leads to eventual graft loss. Early detection of allograft injury is essential for guiding appropriate intervention to delay or prevent irreversible damage. Several advanced MRI techniques can offer some important information regarding functional changes such as perfusion, diffusion, structural complexity, as well as oxygenat...
Source: Korean Journal of Radiology - Category: Radiology Tags: Korean J Radiol Source Type: research
Conclusion As a critical regulator of inflammation and cell survival, the NFκB pathway is a promising target for diagnosing and treating kidney diseases. For modulation of the NFκB pathway in the clinic, a number of molecules can effectively inhibit NFκB signaling by targeting the receptors, associated adaptors, IKKs, IκBs and transcriptional regulators (144). There is further clinical evidence on small-molecule inhibitors of IKKα and NIK from recent trials on anti-cancer therapies (145). These clinical trials showed that the cancer-selective pharmacodynamic response of DTP3, the co-inhibitor...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
CONCLUSIONS: This study demonstrated the efficacy of well-preserved acellular scaffold and vasculature network in post renal transplant outcome in a sheep model. These results have potential to pave the road for further investigations in acellular whole organ transplantation. PMID: 30813040 [PubMed - in process]
Source: Biol Sci Space - Category: Science Authors: Tags: Mater Sci Eng C Mater Biol Appl Source Type: research
The effects of renal allograft ischemic injury on vascular endothelial function have not been clearly established. The aim of this study was to examine vascular reactivity to acetylcholine (ACh) in kidneys subjected to ischemic injury and reperfusion.
Source: Journal of Surgical Research - Category: Surgery Authors: Tags: Transplantation/Immunology Source Type: research
Conclusions To our knowledge, our work is the first to have demonstrated actual renal regeneration while ischemically damaged human kidneys are perfused ex vivo for 24 hours. The observed regeneration entails: increased synthesis of adenosine triphosphate, a reduced inflammatory response, increased synthesis of growth factors, normalization of the cytoskeleton and mitosis. The ability to regenerate renal tissue ex vivo sufficiently to result in immediate function could revolutionize transplantation by solving the chronic organ shortage.
Source: Transplantation - Category: Transplant Surgery Tags: Original Basic Science—General Source Type: research
ConclusionIn summary, fluorescence angiography reflects preexisting morphological changes of the renal cortex. ICG angiography may serve as an alternative method for the assessment of microperfusion of the kidney allograft.This article is protected by copyright. All rights reserved.
Source: Microcirculation - Category: Research Authors: Tags: Original Research Source Type: research
We examined whether any of the following factors modified the relationship between donor AKI and graft survival: kidney donor profile index, cold ischemia time, donation after cardiac death, expanded-criteria donation, kidney machine perfusion, donor-recipient gender combinations, or delayed graft function.
Source: Kidney International - Category: Urology & Nephrology Authors: Tags: Clinical Investigation Source Type: research
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