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1.
World J Gastrointest Surg ; 16(9): 3032-3040, 2024 Sep 27.
Artigo em Inglês | MEDLINE | ID: mdl-39351551

RESUMO

BACKGROUND: Through continuous improvement in transplantation medicine, a wider range of solid organ transplant (SOT) recipients is considered suitable for complex procedures. Despite advances in modern transplantation practice, transpiring invasive fungal infections pose a substantial threat for SOT recipients. To our knowledge, cryptococcal infection confined amidst sole pancreas SOT recipients has not been described to date. Enforcement of a multidisciplinary transplant team approach in the management of pancreas SOT recipients presenting with complex cryptococcal complications is fundamental in improving patient outcomes. CASE SUMMARY: We present the case of a female pancreas transplant recipient, with confirmed meningeal cryptococcosis, referred to our institution for further evaluation and treatment from the Regional Center for Infectious Diseases. On admission, the patient was weaned from the protocolized immunosuppression therapy for two consecutive weeks, in addition to tapering systemic corticosteroid remedial treatment. Our novel multidisciplinary transplant team approach embodied exhaustive discussions of possible complex and diverse multiple organ system physiologic and pathologic challenges associated with distinct management strategies in pancreas transplant recipients. Owing to the potentially devastating impact of invasive cryptococcosis in terms of morbidity and mortality, a definitive surgical intervention of pancreas transplant grafectomy was reinforced, as a pathway towards secure access to early meaningful expertise care. The patient was discharged to the Regional Center for Infectious Diseases 2 mo after the admittance further advancing to a clinical improvement. CONCLUSION: The precision transplantation approach by tailoring complex medical interventions to individual needs proved indispensable in improving our patient's outcomes.

2.
Cureus ; 16(9): e68622, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39371776

RESUMO

Introduction Transplant Games lend a unique opportunity not only by providing a platform for donors and recipients to engage in sports but also to counter the negativity surrounding organ donation and showcase to the world that transplant recipients can lead active lives. When the Transplant Games were held in Kochi, Kerala, India, for the first time, it provided a venue to engage with transplant recipients, donors, and the families of deceased donors. We aimed to understand the impact that engagement in sports brings on the lives of donors and recipients. Methods After obtaining permission from the organizers, we explained the objectives of the survey to the participants and encouraged them to participate. A survey, covering basic demographic information, transplantation details, and questions related to sports engagement was formulated. Participants could complete the survey electronically via a quick response code or in hard copy. They were fully informed about the objectives of the survey and had the right to withdraw at any stage without consequences. The survey was available for five hours during the games. The study received institutional ethics committee approval (ECASM-AIMS-2024-059). Results Among the approximate 150 participants, we received 78 respondents (52%). After the nine who withdrew consent were removed, we had a full response from 69 participants. Of these, 59 were males (85.5%), and 10 (14.5%) were females. The average age of the participants was 45 ± 13 years. Self-motivation was the most common factor in taking up sports for 30.4% of the responders, followed by family and friends in 23.2% and transplant doctors in 5.8%. Liver Foundation of Kerala (LIFOK), a self-help group of transplant recipients, played a major role in 4.3% of the responders. Bowling was the most popular sport with 23 mentions, followed by carroms and badminton with 27 and 20 mentions, respectively. Donors started to take an active role in sports earlier than recipients, 3.1 ± 1.89 vs. 5.7 ± 5.5 months. The most common reason cited for taking up sports was to become part of the transplant community, followed by a desire to embrace a healthier lifestyle and improve fitness levels. Although none had a personalized coach, most intensified their training and improved nutrition as part of their preparation for the games. Conclusion Our survey is limited by its small and self-selected sample size. Our study highlights the significant role of self-motivation, family support, and self-help groups in encouraging solid organ transplant recipients and donors to engage in sports after surgery. It also highlights the need for more proactive encouragement from doctors and better availability of sports facilities and support staff to help transplant recipients and donors engage in physical activities, which are crucial for their physical and emotional well-being.

3.
Transpl Int ; 37: 13302, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39376730

RESUMO

Duodenal leaks (DL) contribute to most graft losses following pancreas transplantation. However, there is a paucity of literature comparing graft preservation approach versus upfront graft pancreatectomy in these patients. We reviewed all pancreas transplants performed in our institution between 2000 and 2020 and identified the recipients developing DL to compare based on their management: percutaneous drainage vs. operative graft preservation vs. upfront pancreatectomy. Of the 595 patients undergoing pancreas transplantation, 74 (12.4%) developed a duodenal leak with a median follow up of 108 months. Forty-five (61%) were managed by graft preservation strategies, with the rest being treated with upfront graft pancreatectomy. DL managed by graft preservation strategies had similar graft survival rates at 1 and 5-year compared to the matched cohort of population without DL (95% and 59% vs. 91% and 62%; p = 0.78). Multivariate analysis identified male recipient (OR: OR: 6.18; CI95%: 1.26-41.09; p = 0.04) to have higher odds of undergoing an upfront graft pancreatectomy. In appropriately selected recipients with DL, graft preservation strategies utilizing either interventional radiology guided percutaneous drainage or laparotomy with/without repair of leak can achieve comparable long-term graft survival rates compared to recipients without DL.


Assuntos
Drenagem , Sobrevivência de Enxerto , Transplante de Pâncreas , Pancreatectomia , Humanos , Transplante de Pâncreas/efeitos adversos , Transplante de Pâncreas/métodos , Masculino , Feminino , Adulto , Estudos Retrospectivos , Pessoa de Meia-Idade , Pancreatectomia/efeitos adversos , Pancreatectomia/métodos , Fístula Anastomótica/etiologia , Fístula Anastomótica/cirurgia , Fístula Anastomótica/terapia , Duodeno/cirurgia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/cirurgia
4.
J Clin Med ; 13(17)2024 Aug 31.
Artigo em Inglês | MEDLINE | ID: mdl-39274392

RESUMO

Background: Pancreas transplantation (PTX) remains the most effective treatment to prevent long-term complications and provide consistent euglycemia in patients with endocrine pancreatic insufficiency, mainly in type I diabetic patients. Considering early graft loss (EGL) and the perioperative complication rate, an optimal risk stratification based on donor risk factors is paramount. Methods: In our single-center study, we retrospectively assessed the risk factors for EGL and reduced graft survival in 97 PTXs (82 simultaneous pancreas and kidney [SPK], 11 pancreases transplanted after kidney [PAK] and 4 pancreases transplanted alone [PTA]) between 2010 and 2021. By statistically analyzing the incorporation of different donor risk factors using the Kaplan-Meier method and a log-rank test, we introduced a composite risk model for the evaluation of offered pancreas grafts. Results: The overall EGL rate was 6.5%. In the univariate analysis of donor characteristics, age > 45 years, BMI > 25 kg/m2, lipase > 60 U/L, cerebrovascular accident (CVA) as the cause of death, mechanical cardiopulmonary resuscitation (mCPR), cold ischemia time (CIT) > 600 min and retrieval by another center were identified as potential risk factors; however, they lacked statistical significance. In a multivariate model, age > 45 years (HR 2.05, p = 0.355), BMI > 25 kg/m2 (HR 3.18, p = 0.051), lipase > 60 U/L (HR 2.32, p = 0.148), mCPR (HR 8.62, p < 0.0001) and CIT > 600 min (HR 1.89, p = 0.142) had the greatest impact on pancreas graft survival. We subsumed these factors in a composite risk model. The combination of three risk factors increased the rate of EGL significantly (p = 0.003). Comparing the pancreas graft survival curves for ≥3 risk factors to <3 risk factors in a Kaplan-Meier model revealed significant inferiority in the pancreas graft survival rate (p = 0.029). Conclusions: When evaluating a potential donor organ, grafts with a combination of three or more risk factors should only be accepted after careful consideration to reduce the risk of EGL and to significantly improve outcomes after PTX.

7.
Prog Transplant ; 34(3): 119-129, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39196572

RESUMO

Background: The field of pancreas transplantation has undergone transformative phases, progressing from its promising inception in 1966 to becoming a standard treatment for patients with insulin-dependent diabetes. This bibliometric analysis explores the progression of pancreas transplantation research over a period of four decades, mapping milestones, contributors, and emerging trends. Methods: Our bibliometric analysis utilizes the comprehensive Scopus database, which includes publication titles, author information, affiliations, abstracts, keywords, and journal details. The search strategy was centered on research related to pancreas and pancreas-kidney transplantation. The analysis encompasses the time frame spanning from 1983 to 2023, with the data extraction taking place on October 7th, 2023. Results: The analysis of 4,897 articles uncovered unique trends in the field of pancreas transplantation research. The years 1989, 1996, and 2021 saw significant increases in the number of publications, which corresponded to the responses to clinical challenges and advancements. Contributions by authors from the United States of America were the most numerous, with 1,905 publications and 49,949 citations. The research topics were highlighted by keywords such as "graft survival," "graft rejection," and" Immunosuppressive treatment." Conclusion: The fluctuations in publication trends that have been identified indicate dynamic reactions to changing priorities and challenges. Although it has limitations, this analysis provides valuable insights for researchers, clinicians, and policymakers who are dealing with the complex field of pancreas transplantation literature. Further bibliometric research may advance our knowledge and direct future initiatives in this developing field.


Assuntos
Bibliometria , Transplante de Pâncreas , Transplante de Pâncreas/estatística & dados numéricos , Transplante de Pâncreas/tendências , Humanos , Pesquisa Biomédica/tendências , Sobrevivência de Enxerto
8.
Transpl Int ; 37: 12682, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39165279

RESUMO

Duodeno-duodenostomy (DD) has been proposed as a more physiological alternative to conventional duodeno-jejunostomy (DJ) for pancreas transplantation. Accessibility of percutaneous biopsies in these grafts has not yet been assessed. We conducted a retrospective study including all pancreatic percutaneous graft biopsies requested between November 2009 and July 2021. Whenever possible, biopsies were performed under ultrasound (US) guidance or computed tomography (CT) guidance when the US approach failed. Patients were classified into two groups according to surgical technique (DJ and DD). Accessibility, success for histological diagnosis and complications were compared. Biopsy was performed in 93/136 (68.4%) patients in the DJ group and 116/132 (87.9%) of the DD group (p = 0.0001). The graft was not accessible for biopsy mainly due to intestinal loop interposition (n = 29 DJ, n = 10 DD). Adequate sample for histological diagnosis was obtained in 86/93 (92.5%) of the DJ group and 102/116 (87.9%) of the DD group (p = 0.2777). One minor complication was noted in the DD group. The retrocolic position of the DD pancreatic graft does not limit access to percutaneous biopsy. This is a safe technique with a high histological diagnostic success rate.


Assuntos
Duodenostomia , Transplante de Pâncreas , Humanos , Estudos Retrospectivos , Masculino , Feminino , Pessoa de Meia-Idade , Transplante de Pâncreas/métodos , Transplante de Pâncreas/efeitos adversos , Adulto , Duodenostomia/métodos , Idoso , Pâncreas/cirurgia , Pâncreas/patologia , Tomografia Computadorizada por Raios X , Biópsia/métodos , Duodeno/cirurgia , Duodeno/patologia
9.
Am J Transplant ; 2024 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-39094952

RESUMO

Patients with type 1 diabetes and concurrent subcutaneous insulin resistance present unique diagnostic and therapeutic challenges for clinicians. The standard therapeutic approach is the administration of intravenous insulin. Pancreatic transplantation should be considered at an appropriate time, particularly in the event of life-threatening ketoacidosis, hyperglycemia, hypoglycemia, catheter-associated thrombosis, and infections. We present the case of a 24-year-old woman with type 1 diabetes since early childhood and increasingly uncontrollable subcutaneous and intramuscular insulin resistance. Furthermore, we present the diagnostic pathway and therapeutic interventions performed, culminating in pancreatic transplantation as a curative approach. Immediate graft function resulted in optimal glycemic control.

10.
Clin Transplant ; 38(8): e15386, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39087488

RESUMO

BACKGROUND: Chronic immunosuppression following pancreas transplantation carries significant risk, including posttransplant lymphoproliferative disease (PTLD). We sought to define the incidence, risk factors, and long-term outcomes of PTLD following pancreas transplantation at a single center. METHODS: All adult pancreas transplants between February 1, 1983 and December 31, 2023 at the University of Minnesota were reviewed, including pancreas transplant alone (PTA), simultaneous pancreas-kidney transplants (SPK), and pancreas after kidney transplants (PAK). RESULTS: Among 2353 transplants, 110 cases of PTLD were identified, with an overall incidence of 4.8%. 17.3% were diagnosed within 1 year of transplant, 32.7% were diagnosed within 5 years, and 74 (67.3%) were diagnosed after 5 years. The overall 30-year incidence of PTLD did not differ by transplant type-7.4% for PTA, 14.2% for SPK, and 19.4% for PAK (p = 0.3). In multivariable analyses, older age and Epstein-Barr virus seronegativity were risk factors for PTLD, and PTLD was a risk factor for patient death. PTLD-specific mortality was 32.7%, although recipients with PTLD had similar median posttransplant survival compared to those without PTLD (14.9 year vs. 15.6 year, p = 0.9). CONCLUSIONS: PTLD following pancreas transplantation is associated with significant mortality. Although the incidence of PTLD has decreased over time, a high index of suspicion for PTLD following PTx should remain in EBV-negative recipients.


Assuntos
Sobrevivência de Enxerto , Transtornos Linfoproliferativos , Transplante de Pâncreas , Complicações Pós-Operatórias , Humanos , Transplante de Pâncreas/efeitos adversos , Masculino , Transtornos Linfoproliferativos/etiologia , Transtornos Linfoproliferativos/epidemiologia , Feminino , Adulto , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Seguimentos , Fatores de Risco , Prognóstico , Pessoa de Meia-Idade , Incidência , Taxa de Sobrevida , Estudos Retrospectivos , Rejeição de Enxerto/etiologia , Rejeição de Enxerto/mortalidade , Transplante de Rim/efeitos adversos , Adulto Jovem
11.
NMR Biomed ; 37(11): e5207, 2024 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38979683

RESUMO

For patients with type 1 diabetes mellitus complicated by severe hypoglycemia, clinical islet transplantation is an efficacious alternative to whole pancreas transplantation. While islet transplantation has improved over the last few years, there remain questions regarding its cost-effectiveness and donor allosensitization, which is exacerbated when islets from more than one donor are required. Understanding the features of a pancreas that would provide viable islets prior to isolation may lead to development of an accurate assay that could identify suitable pancreases and provide significant cost savings to a clinical islet transplantation program. In this pilot study, solid-state high-resolution magic angle spinning (HRMAS) nuclear magnetic resonance (NMR) spectroscopy was used to assess samples of convenience of human pancreatic tissue taken prior to islet isolation both before and after incubation using the two-layer perfluorocarbon (PFC)/University of Wisconsin (UW) solution cold-storage method. We observed that, prior to incubation, human pancreatic tissue exhibited evidence of hypoxia with decreased peak integrals associated with glucose and increased peak integrals corresponding to lactate and free fatty acids. After incubation, we observed a reversal of the hypoxia-induced damage, as integrals corresponding to glucose increased, and those corresponding to lactate and free fatty acid resonances decreased. Interestingly, a significant correlation between the ratio of the glucose integral (at 3.0-4.5 ppm) to the sum of the fatty acid (at 0.9 ppm) and lactate + fatty acid (at 1.3 ppm) integrals and glucose responsiveness, a measure of islet viability, of the isolated islets, was observed after incubation in PFC/UW solution for pancreases that responded to PFC/UW solution incubation (p = 0.02). Notably, pancreases with little or no change in the integral ratio after PFC/UW solution incubation had poor recovery. These results suggest that tissue recovery is a key feature for determining islet cell viability, and further that HRMAS NMR may be a practical method to quickly assess human donor pancreatic tissue prior to islet isolation for clinical transplantation.


Assuntos
Ilhotas Pancreáticas , Espectroscopia de Ressonância Magnética , Doadores de Tecidos , Humanos , Ilhotas Pancreáticas/diagnóstico por imagem , Ilhotas Pancreáticas/metabolismo , Pâncreas/diagnóstico por imagem , Sobrevivência Celular , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Separação Celular
12.
Clin Transplant ; 38(7): e15392, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38967601

RESUMO

INTRODUCTION: This study examined simultaneous pancreas-kidney transplant (SPKt) in Black and White patients to identify disparities in transplantation, days on the waitlist, and reasons for SPKt waitlist removal. METHODS: Using the United Network for Organ Sharing Standard Transplant Analysis and Research file, patients between January 1, 2009, and May 31, 2021, were included. Three cohorts (overall, SPKt recipients only, and those not transplanted) were selected using propensity score matching. Conditional logistic regression was used for categorical outcomes. Days on the waitlist were compared using negative binomial regression. RESULTS: Black patients had increased odds of receiving a  SPKt (OR, 1.25 [95% CI, 1.11-1.40], p < 0.001). White patients had increased odds of receiving a kidney-only transplant (OR 0.48 [95% CI, 0.38-0.61], p < 0.001), and specifically increased odds of receiving a living donor kidney (OR 0.34 [0.25-0.45], p < 0.001). CONCLUSION: This study found that Black patients are more likely to receive a SPKt. Results suggest that there are opportunities for additional inquiry related to patient removal from the waitlist, particularly considering White patients received or accepted more kidney-only transplants and were more likely to receive a living donor kidney-only transplant.


Assuntos
Transplante de Rim , Transplante de Pâncreas , Listas de Espera , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Negro ou Afro-Americano/estatística & dados numéricos , Seguimentos , Sobrevivência de Enxerto , Disparidades em Assistência à Saúde/estatística & dados numéricos , Falência Renal Crônica/cirurgia , Prognóstico , Estudos Retrospectivos , Fatores de Risco , Obtenção de Tecidos e Órgãos/estatística & dados numéricos , Brancos/estatística & dados numéricos
13.
Clin Transplant ; 38(7): e15413, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-39033508

RESUMO

INTRODUCTION: It is unclear whether kidney/pancreas (KP) transplantation will prevent the progression of peripheral arterial disease (PAD) in patients with insulin dependent diabetes (IDDM) and end-stage renal disease. We sought to determine the pre- and posttransplant prevalence of symptomatic PAD and changes in carotid artery intima-media thickness (IMT) in KP recipients. METHODS: In this single center study, outcomes were compared between KP recipients with and without a history of PAD. A subset of recipients underwent pre- and posttransplant IMT measurements. RESULTS: Among the study group (N = 107), 18 (17%) recipients admitted to a pretransplant history of symptomatic PAD, comprised 11 foot infections and 7 amputations (5 minor and 2 major). Baseline characteristics of age, gender, race, years of diabetes, dialysis history, smoking history, years of hypertension, and history of coronary artery disease (CAD) were equivalent between PAD and non-PAD cohorts. At a median follow-up of 60 months (IQR: 28, 110), 16 (15%) KP recipients had suffered a PAD event. In multivariate analysis, a pretransplant history of PAD (hazard ratio [HR] 9.66, p < 0.001) and CAD (HR 3.33, p = 0.04) were independent predictors of posttransplant PAD events. Among a subset of 20 recipients (3 with PAD), mean IMT measurements pretransplant and at a median of 24 (range 18-24) months posttransplant, showed no evidence of disease progression. CONCLUSION: Based on IMT measurements and clinical results, KP transplantation stabilized PAD in most patients, but did not alter outcomes of symptomatic PAD recipients. A pretransplant history of PAD and CAD was an independent predictor of posttransplant PAD events.


Assuntos
Espessura Intima-Media Carotídea , Falência Renal Crônica , Transplante de Rim , Transplante de Pâncreas , Doença Arterial Periférica , Humanos , Feminino , Masculino , Transplante de Pâncreas/efeitos adversos , Doença Arterial Periférica/cirurgia , Doença Arterial Periférica/etiologia , Pessoa de Meia-Idade , Seguimentos , Transplante de Rim/efeitos adversos , Falência Renal Crônica/cirurgia , Fatores de Risco , Prognóstico , Diabetes Mellitus Tipo 1/cirurgia , Diabetes Mellitus Tipo 1/complicações , Adulto , Complicações Pós-Operatórias/epidemiologia , Estudos Retrospectivos , Taxa de Filtração Glomerular , Testes de Função Renal
14.
Front Transplant ; 3: 1370945, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38993783

RESUMO

Cytomegalovirus (CMV) infections remain a common problem after solid-organ transplantation. We characterized the burden of CMV infections, and adverse events of CMV prophylaxis after simultaneous pancreas-kidney transplantation (SPK). We included all SPK patients (n = 236) since 2010 in our country. Immunosuppression was ATG, tacrolimus, mycophenolate, and steroids. Valganciclovir prophylaxis was given to all CMV D+/R- patients for six months, and to seropositive SPK patients for three months since February 2019. CMV DNAemia was monitored with quantitative PCR from plasma. Among D+/R- SPK recipients, post prophylaxis CMV infection was detected in 41/60 (68%) during follow-up. In seropositive SPK recipients with no prophylaxis, CMV infection was detected in 53/95 (56%), vs. 28/78 (36%) in those who received 3 months of prophylaxis (P = 0.01). CMV was symptomatic in 35 (15%) patients, of which 10 required hospitalization. Mean duration of viremia was 28 days (IQR 21-41). Leukopenia was detected in 63 (46%) of the 138 patients with valganciclovir prophylaxis. 7/122 (6%) of the CMV infections detected were defined as refractory to treatment, and three patients had confirmed ganciclovir resistance. SPK recipients experience a high burden of CMV infections despite CMV prophylaxis. Leukopenia is common during valganciclovir prophylaxis.

15.
Cir Cir ; 92(4): 547-556, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39079245

RESUMO

Pancreas transplant (PTx) is the only treatment that establishes normal glucose levels for patients diagnosed with diabetes types 1 and 2. The paper aims to review and analyze graft survival, patient survival, and the impact on diabetic complications. We describe that the graft survival was 82-98% at 1 year, 90% at 5 years, and 75-54% at 10 years for simultaneous pancreas-kidney recipient; 71% pancreas after kidney (PAK), and 62% PTx alone at 1 year. Patient survival: At 1 year for recipients was 96.9% simultaneous pancreas-kidney transplantation (SPK); for PAK transplantation recipients, 96.3%; and for PTx alone recipients, 98.3%. In general, the pancreas transplantation improves and reverses diabetic complications. Finally, the pancreatic transplant is a morbid procedure and emerges as a significant alternative in diabetes management, directly competing with conventional insulin therapies. Results so far suggest that the most effective transplant model is the SPK. While more patients could benefit from this procedure, surgical complications and the need for immunosuppression pose significant challenges.


El trasplante de páncreas es el único tratamiento que estabiliza los niveles normales de glucosa en los pacientes diagnosticados con diabetes tipo 1 o tipo 2. En esta revisión se analizan la supervivencia del injerto, la supervivencia del paciente y el impacto en las complicaciones diabéticas. Se describe la supervivencia del injerto: 82-98% al año para los receptores de trasplante simultáneo de páncreas y riñón, 71% para trasplante páncreas después de riñón y 62% para trasplante de páncreas solitario al año. Supervivencia de los pacientes a 1 año: 96.9% para los receptores de trasplante simultáneo de páncreas y riñón, 96.3% para los receptores de trasplante de páncreas después de riñón y 98.3% para los receptores de páncreas solitario. En general, el trasplante de páncreas mejora y revierte las complicaciones diabéticas. Finalmente, el trasplante de páncreas, un procedimiento mórbido, surge como una alternativa significativa en el manejo de la diabetes, compitiendo directamente con las terapias convencionales de insulina. Hasta ahora, los resultados indican que el modelo de trasplante más efectivo es el simultáneo de páncreas y riñón. Aunque más pacientes podrían beneficiarse de este procedimiento, las complicaciones quirúrgicas y la necesidad de inmunosupresión plantean desafíos significativos.


Assuntos
Diabetes Mellitus Tipo 1 , Sobrevivência de Enxerto , Transplante de Rim , Transplante de Pâncreas , Humanos , Diabetes Mellitus Tipo 1/complicações , Diabetes Mellitus Tipo 1/cirurgia , Complicações Pós-Operatórias/etiologia , Diabetes Mellitus Tipo 2/complicações , Complicações do Diabetes
16.
Front Immunol ; 15: 1359381, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38873595

RESUMO

Background: About 10-20% of pancreas allografts are still lost in the early postoperative period despite the identification of numerous detrimental risk factors that correlate with graft thrombosis. Methods: We conducted a multicenter study including 899 pancreas transplant recipients between 2000 and 2018. Early pancreas failure due to complete thrombosis, long-term pancreas, kidney and patient survivals were analyzed and adjusted to donor, recipient and perioperative variables using a multivariate cause-specific Cox model stratified to transplant centers. Results: Pancreas from donors with history of hypertension (6.7%), as well as with high body mass index (BMI), were independently associated with an increased risk of pancreas failure within the first 30 post-operative days (respectively, HR= 2.57, 95% CI from 1.35 to 4.89 and HR= 1.11, 95% CI from 1.04 to 1.19). Interaction term between hypertension and BMI was negative. Donor hypertension also impacted long-term pancreas survival (HR= 1.88, 95% CI from 1.13 to 3.12). However, when pancreas survival was calculated after the postoperative day 30, donor hypertension was no longer a significant risk factor (HR= 1.22, 95% CI from 0.47 to 3.15). A lower pancreas survival was observed in patients receiving a pancreas from a hypertensive donor without RAAS (Renin Angiotensin Aldosterone System) blockers compared to others (50% vs 14%, p < 0.001). Pancreas survival was similar among non-hypertensive donors and hypertensive ones under RAAS blockers. Conclusion: Donor hypertension was a significant and independent risk factor of pancreas failure. The well-known pathogenic role of renin-angiotensin-aldosterone system seems to be involved in the genesis of this immediate graft failure.


Assuntos
Angiotensina II , Hipertensão , Transplante de Pâncreas , Trombose , Doadores de Tecidos , Humanos , Transplante de Pâncreas/efeitos adversos , Masculino , Feminino , Hipertensão/etiologia , Pessoa de Meia-Idade , Adulto , Trombose/etiologia , Fatores de Risco , Sobrevivência de Enxerto , Aloenxertos , Estudos Retrospectivos , Rejeição de Enxerto/imunologia
17.
Abdom Radiol (NY) ; 49(7): 2428-2448, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38900315

RESUMO

Pancreas transplantation is a complex surgical procedure performed to restore normoglycemia in patients with type 1 diabetes and includes whole/segmental organ transplant and islet cell transplantation (ICT). In the United States, simultaneous pancreas-kidney transplant (SPK) is most commonly performed due to the higher occurrence of end-stage renal disease in diabetic patients. Understanding the surgical technique and postoperative anatomy is imperative for effective and accurate surveillance following transplantation. Imaging plays an essential role in patients with pancreatic transplants and is often used to evaluate viability, vascular and parenchymal anatomy, and identify potential complications. Imaging techniques such as ultrasound, color and spectral Doppler, computed tomography (CT), magnetic resonance imaging (MRI), and angiography have a complementary role in the postoperative evaluation following a pancreas transplant. The common complications after a whole organ pancreas transplant include vascular thrombosis, graft rejection, pancreatitis, and infections. Complications can be classified into vascular (partial or complete venous thrombosis, arterial thrombosis, stenosis or pseudoaneurysm), parenchymal (pancreatitis, graft rejection), and bowel-related or miscellaneous causes (bowel obstruction, anastomotic leak, and peripancreatic fluid collections). Islet cell transplantation is an innovative therapy for patients with type 1 diabetes. It involves isolating insulin-producing islet cells from donor pancreas and transplanting into recipients, to provide long-term insulin independence or significantly reduce insulin requirements. In recent years, isolation techniques, immunosuppressive regimens, and post-transplant monitoring advancements have propelled ICT as a viable therapeutic option. This comprehensive review aims to provide insights into the current state-of-the-art imaging techniques discussing both normal and abnormal features following pancreas transplantation.


Assuntos
Transplante de Pâncreas , Complicações Pós-Operatórias , Humanos , Transplante de Pâncreas/métodos , Complicações Pós-Operatórias/diagnóstico por imagem , Diabetes Mellitus Tipo 1/diagnóstico por imagem , Diagnóstico por Imagem/métodos , Pâncreas/diagnóstico por imagem
18.
J Clin Med ; 13(12)2024 Jun 16.
Artigo em Inglês | MEDLINE | ID: mdl-38930054

RESUMO

Background: Simultaneous pancreas and kidney transplantation (SPK) remains the only curative treatment for type I diabetics with end-stage kidney disease. SPK using donors after circulatory death (DCD) is one important measure to expand the organ pool for pancreas transplantation (PT). After initial doubts due to higher complications, DCD SPK is now considered safe and equivalent to donation after brain death in terms of survival and graft function. Materials and Methods: We assessed pancreas and kidney graft function, as well as complications of the first three patients who underwent a DCD SPK in Switzerland. Two transplantations were after rapid procurement, one following normothermic regional perfusion (NRP). Results: Intra- and postoperative courses were uneventful and without major complications in all patients. In the two SPK after rapid procurement, pancreas graft function was excellent, with 100% insulin-free survival, and hemoglobin A1C dropped from 7.9 and 7.5 before SPK and to 5.1 and 4.3 after three years, respectively. Kidney graft function was excellent in the first year, followed by a gradual decline due to recurrent infections. The patient, after NRP SPK, experienced short-term delayed pancreatic graft function requiring low-dose insulin treatment for 5 days post-transplant, most likely due to increased peripheral insulin resistance in obesity. During follow-up, there was persistent euglycemia and excellent kidney function. Conclusions: We report on the first series of DCD SPK ever performed in Switzerland. Results were promising, with low complication rates and sustained graft survival. With almost half of all donors in Switzerland currently being DCD, we see great potential for the expansion of DCD PT.

19.
Transplant Rev (Orlando) ; 38(4): 100861, 2024 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-38870826

RESUMO

Despite the clinical relevance of graft pancreatitis (GP) after pancreas transplantation (PT), a universally accepted definition is lacking. Aim of this scoping review was to provide a systematic overview of GP definitions reported in the literature. MEDLINE, Web of Science and Embase were searched for relevant articles. Prospective/retrospective studies reporting a GP definition were included. The included series (n = 20) used four main criteria (clinical, biochemical, radiological and pathological) to define GP. Overall, 9 studies defined GP using a single criterion (n = 8 biochemical, n = 1 pathological), 7 series using two criteria (n = 3 clinical + biochemical, n = 3 biochemical + radiological, n = 1 clinical + radiological), 3 series using three criteria (n = 3 clinical + biochemical + radiological), and 1 series using four criteria. Overall, 20 definitions of GP were found. GP rate was reported by 19 series and ranged between 0% and 87%. This scoping review confirms that a universally accepted definition of GP is absent, and there is no consensus on the criteria on which it should be grounded. Future research should focus on developing a validated definition of GP.

20.
Transpl Int ; 37: 12864, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38832357

RESUMO

Simultaneous pancreas-kidney (SPK) transplantation improves quality of life and limits progression of diabetic complications. There is reluctance to accept pancreata from donors with abnormal blood tests, due to concern of inferior outcomes. We investigated whether donor amylase and liver blood tests (markers of visceral ischaemic injury) predict pancreas graft outcome using the UK Transplant Registry (2016-2021). 857 SPK recipients were included (619 following brainstem death, 238 following circulatory death). Peak donor amylase ranged from 8 to 3300 U/L (median = 70), and this had no impact on pancreas graft survival when adjusting for multiple confounders (aHR = 0.944, 95% CI = 0.754-1.81). Peak alanine transaminases also did not influence pancreas graft survival in multivariable models (aHR = 0.967, 95% CI = 0.848-1.102). Restricted cubic splines were used to assess associations between donor blood tests and pancreas graft survival without assuming linear relationships; these confirmed neither amylase, nor transaminases, significantly impact pancreas transplant outcome. This is the largest, most statistically robust study evaluating donor blood tests and transplant outcome. Provided other factors are acceptable, pancreata from donors with mild or moderately raised amylase and transaminases can be accepted with confidence. The use of pancreas grafts from such donors is therefore a safe, immediate, and simple approach to expand the donor pool to reach increasing demands.


Assuntos
Amilases , Sobrevivência de Enxerto , Transplante de Rim , Transplante de Pâncreas , Doadores de Tecidos , Humanos , Feminino , Masculino , Pessoa de Meia-Idade , Adulto , Amilases/sangue , Estudos de Coortes , Alanina Transaminase/sangue , Reino Unido , Testes Hematológicos , Sistema de Registros
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