Ethical Issues in Pediatric VCA
AbstractPurpose of ReviewThere is growing interest in offering vascularized composite allografts (VCAs) to children, particularly upper extremity and face transplants. This review identifies ethical issues that must be addressed as VCA programs consider including more children and adolescents.Recent FindingsThe primary ethical concern in pediatric VCA is that the potential benefits might not justify the risks. Other issues involve eligibility criteria, informed permission and assent, authorizing donations and procuring VCAs, donor and recipient privacy and confidentiality, oversight and evaluation of transplants, and cost-effectiveness and resource allocation. A final concern is the obligation to avoid unfairly denying children and adolescents access to research participation and the benefits of research findings. While some observers find the uncertainty and risk of harm too great to expand access to VCA in minors, others disagree.SummaryEthical concerns, particularly those related to the risks relative to potential benefits, may be the primary barrier to pediatric VCA. Carefully developed guidance and policy can facilitate the ethical inclusion and exclusion of children and adolescents from VCA protocols.
Conclusions We present a quick, simple, and affordable method to decellularize a muscle flap through the vascular network. Our proposed method is efficient and can be completed in a significantly shorter time when compared with other methods. It is also safe and does not affect integrity of tissue, and this is essential for a reliable recellularization.
AbstractPurpose of ReviewAntibodies to human leukocyte antigens (HLA) are associated with adverse patient and allograft outcomes after heart transplantation. Non-HLA antibodies have increasingly been recognized as important mediators of rejection, cardiac allograft vasculopathy (CAV), and allograft injury. In particular, these antibodies have been implicated in a subset of heart transplant recipients who have clinical and/or pathologic evidence of antibody-mediated rejection in the absence of detectable antibodies against HLA.Recent FindingsNon-HLA antigens have been identified to have important roles in both the innate an...
Abstract PURPOSE OF REVIEW: The present review examines psychosocial factors emerging as predictive of clinical outcomes among solid organ transplant (SOT) recipients, with possible extensions to vascular composite allograft (VCA) and hand transplantation, in particular. The Chauvet Workgroup report and International Society of Heart and Lung Transplantation consensus guidelines are used to delineate areas of commonality between SOT and VCA, as well as unique features contributing to post-VCA psychosocial risk. RECENT FINDINGS: Increasing evidence suggests that depression, cognitive function, and other posttr...
ConclusionWe identified important psychosocial predictors of post-LT alcohol relapse and validated SIPAT and SALT scores as pre-transplant risk factors for alcohol relapse.
CONCLUSIONS: MSC can be divided into immune-tolerant and pro-rejection types in organ transplantation and Netrin-1 can induce the transformation of MSC from the pro-rejection to immune-tolerant type and markedly prolong the skin graft survival time. PMID: 31696460 [PubMed - in process]
Conclusion Inguinal herniation of the transplant ureter leading to ureteral obstruction is a rare, probably underreported, cause graft of dysfunction. Therefore, we advocate elective repair of inguinal or incisional hernias in renal transplant recipients. PMID: 31690216 [PubMed - as supplied by publisher]
We present our institutional experience of endovascular management for TRAS using CO2 digital subtraction angiography (CO2-DSA) and balloon angioplasty to manage failing renal transplants.
To investigate the clinical outcomes after osteochondral allograft transplantation for large Hill-Sachs lesions.
CONCLUSION: Although LC-MS provides a more accurate representation of the blood concentration of the parent compound tacrolimus exclusive of metabolite, established cut points for tacrolimus dosing may need to be adjusted to account for the increased risk of renal injury. PMID: 31696925 [PubMed - as supplied by publisher]
Introduction Circulating anti-human leukocyte antigen (HLA) serum donor-specific antibodies (sDSAs) increase the risk of chronic lung allograft dysfunction (CLAD) and mortality. Discrepancies between serological and pathological/clinical findings are common. Therefore, we aimed to assess the presence of tissue-bound graft DSAs (gDSAs) in CLAD explant tissue compared with sDSAs. Methods Tissue cores, obtained from explant lungs of unused donors (n=10) and patients with bronchiolitis obliterans syndrome (BOS; n=18) and restrictive allograft syndrome (RAS; n=18), were scanned with micro-computed tomography before elution of ...