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1.
Transpl Int ; 37: 12312, 2024.
Article En | MEDLINE | ID: mdl-38720821

Introduction: Musculoskeletal disorders could be associated with metabolic disorders that are common after kidney transplantation, which could reduce the quality of life of patients. The aim of this study was to assess the prevalence of both musculoskeletal and metabolic disorders in kidney transplant patients. Methods: MEDLINE, CINAHL, Cochrane Library, EMBASE and Web of Science were searched from their inception up to June 2023. DerSimonian and Laird random-effects method was used to calculate pooled prevalence estimates and their 95% confidence intervals (CIs). Results: 21,879 kidney transplant recipients from 38 studies were analysed. The overall proportion of kidney transplant patients with musculoskeletal disorders was 27.2% (95% CI: 18.4-36.0), with low muscle strength (64.5%; 95% CI: 43.1-81.3) being the most common disorder. Otherwise, the overall proportion of kidney transplant patients with metabolic disorders was 37.6% (95% CI: 21.9-53.2), with hypovitaminosis D (81.8%; 95% CI: 67.2-90.8) being the most prevalent disorder. Conclusion: The most common musculoskeletal disorders were low muscle strength, femoral osteopenia, and low muscle mass. Hypovitaminosis D, hyperparathyroidism, and hyperuricemia were also the most common metabolic disorders. These disorders could be associated with poorer quality of life in kidney transplant recipients. Systematic Review Registration: https://www.crd.york.ac.uk/prospero/, identifier [CRD42023449171].


Kidney Transplantation , Metabolic Diseases , Musculoskeletal Diseases , Humans , Kidney Transplantation/adverse effects , Prevalence , Musculoskeletal Diseases/epidemiology , Musculoskeletal Diseases/etiology , Metabolic Diseases/epidemiology , Quality of Life , Muscle Strength , Transplant Recipients , Vitamin D Deficiency/epidemiology , Vitamin D Deficiency/complications , Bone Diseases, Metabolic/epidemiology , Bone Diseases, Metabolic/etiology , Postoperative Complications/epidemiology , Postoperative Complications/etiology
2.
Clin Transplant ; 38(5): e15329, 2024 May.
Article En | MEDLINE | ID: mdl-38722085

BACKGROUND: Immunosuppression reduction for BK polyoma virus (BKV) must be balanced against risk of adverse alloimmune outcomes. We sought to characterize risk of alloimmune events after BKV within context of HLA-DR/DQ molecular mismatch (mMM) risk score. METHODS: This single-center study evaluated 460 kidney transplant patients on tacrolimus-mycophenolate-prednisone from 2010-2021. BKV status was classified at 6-months post-transplant as "BKV" or "no BKV" in landmark analysis. Primary outcome was T-cell mediated rejection (TCMR). Secondary outcomes included all-cause graft failure (ACGF), death-censored graft failure (DCGF), de novo donor specific antibody (dnDSA), and antibody-mediated rejection (ABMR). Predictors of outcomes were assessed in Cox proportional hazards models including BKV status and alloimmune risk defined by recipient age and molecular mismatch (RAMM) groups. RESULTS: At 6-months post-transplant, 72 patients had BKV and 388 had no BKV. TCMR occurred in 86 recipients, including 27.8% with BKV and 17% with no BKV (p = .05). TCMR risk was increased in recipients with BKV (HR 1.90, (95% CI 1.14, 3.17); p = .01) and high vs. low-risk RAMM group risk (HR 2.26 (95% CI 1.02, 4.98); p = .02) in multivariable analyses; but not HLA serological MM in sensitivity analysis. Recipients with BKV experienced increased dnDSA in univariable analysis, and there was no association with ABMR, DCGF, or ACGF. CONCLUSIONS: Recipients with BKV had increased risk of TCMR independent of induction immunosuppression and conventional alloimmune risk measures. Recipients with high-risk RAMM experienced increased TCMR risk. Future studies on optimizing immunosuppression for BKV should explore nuanced risk stratification and may consider novel measures of alloimmune risk.


BK Virus , Graft Rejection , Graft Survival , Kidney Function Tests , Kidney Transplantation , Polyomavirus Infections , Tumor Virus Infections , Viremia , Humans , Kidney Transplantation/adverse effects , BK Virus/immunology , BK Virus/isolation & purification , Female , Male , Polyomavirus Infections/immunology , Polyomavirus Infections/virology , Polyomavirus Infections/complications , Middle Aged , Graft Rejection/etiology , Graft Rejection/immunology , Follow-Up Studies , Tumor Virus Infections/immunology , Tumor Virus Infections/virology , Viremia/immunology , Viremia/virology , Prognosis , Risk Factors , Glomerular Filtration Rate , Adult , Postoperative Complications , Immunosuppressive Agents/therapeutic use , Immunosuppressive Agents/adverse effects , Retrospective Studies , Kidney Failure, Chronic/surgery , Kidney Failure, Chronic/immunology , Kidney Diseases/virology , Kidney Diseases/immunology , Kidney Diseases/surgery , Transplant Recipients
3.
Virol J ; 21(1): 108, 2024 05 10.
Article En | MEDLINE | ID: mdl-38730285

BACKGROUND: The immature and suppressed immune response makes transplanted children a special susceptible group to Parvovirus B19 (PVB19). However, the clinical features of transplanted children with PVB19 infection haven't been comprehensively described. METHODS: We searched the medical records of all the transplant recipients who attended the Children's Hospital of Fudan University from 1 Oct 2020 to 31 May 2023, and reviewed the medical literature for PVB19 infection cases among transplanted children. RESULTS: A total of 10 cases of PVB19 infection were identified in 201 transplanted children at our hospital, and the medical records of each of these cases were shown. Also, we retrieved 40 cases of PVB19 infection among transplanted children from the literature, thus summarizing a total of 50 unique cases of PVB19 infection. The median time to the first positive PVB19 DNA detection was 14 weeks post-transplantation. PVB19 IgM and IgG were detected in merely 26% and 24% of the children, respectively. The incidence of graft loss/dysfunction was as high as 36%. Hematopoietic stem cell transplant (HSCT) recipients showed higher PVB19 load, lower HGB level, greater platelet damage, lower PVB19 IgM/IgG positive rates, and more graft dysfunction than solid-organ transplant (SOT) recipients, indicating a more incompetent immune system. CONCLUSIONS: Compared with the published data of transplanted adults, transplanted children displayed distinct clinical features upon PVB19 infection, including lower PVB19 IgM/IgG positive rates, more graft dysfunction, and broader damage on hematopoietic cell lines, which was even more prominent in HSCT recipients, thus should be of greater concern.


Antibodies, Viral , Hematopoietic Stem Cell Transplantation , Parvoviridae Infections , Parvovirus B19, Human , Humans , Parvovirus B19, Human/immunology , Parvovirus B19, Human/genetics , Child , Female , Male , Child, Preschool , Parvoviridae Infections/virology , Parvoviridae Infections/immunology , Hematopoietic Stem Cell Transplantation/adverse effects , Antibodies, Viral/blood , Infant , Adolescent , Immunoglobulin M/blood , Immunoglobulin G/blood , Transplant Recipients , DNA, Viral/blood , Viral Load , Organ Transplantation/adverse effects
4.
J Infect Dev Ctries ; 18(4): 542-549, 2024 Apr 30.
Article En | MEDLINE | ID: mdl-38728648

INTRODUCTION: Liver transplant (LT) recipients were at a high risk of infection during the coronavirus disease 2019 (COVID-19) pandemic. Our purpose was to compare the clinical characteristics of severe and non-severe groups of LT recipients with COVID-19, and to analyze their risk factors for severe disease. METHODOLOGY: 79 LT recipients with COVID-19 were divided into a non-severe group (n = 60) and a severe group (n = 19), and differences in clinical characteristics, laboratory tests, and chest computed tomography (CT) performance were analyzed. Logistic regression was used to identify risk factors with severe COVID-19. Receiver operating characteristic (ROC) curves were plotted and the area under curve (AUC) values were calculated to assess the predictive value for severe COVID-19. RESULTS: Age was statistically different (p < 0.001) between the two groups. The difference in neutrophil-to-lymphocyte ratio (NLR), serum creatinine (Scr), D-dimer, urea, C-reactive protein (CRP), lactate dehydrogenase (LDH), and the number of lung segments involved in inflammation between the two groups were statistically significant (p < 0.05). The results revealed that age (OR = 1.255, 95% CI 1.079-1.460), NLR (OR = 1.172, 95% CI 1.019-1.348), and Scr (OR = 1.041, 95% CI 1.016-1.066) were independent risk factors for severe COVID-19. The ROC results showed that high values for age, NLR and Scr predicted severe COVID-19, with AUC values of 0.775, 0.841 and 0.820, respectively, and 0.925 for the three factors combined. CONCLUSIONS: Advanced age, and elevated NLR and Scr are independent risk factors for severe COVID-19 in LT recipients.


COVID-19 , Liver Transplantation , SARS-CoV-2 , Transplant Recipients , Humans , COVID-19/diagnosis , COVID-19/complications , COVID-19/epidemiology , Male , Risk Factors , Female , Middle Aged , Adult , Transplant Recipients/statistics & numerical data , Severity of Illness Index , Age Factors , Retrospective Studies , Aged , ROC Curve , Tomography, X-Ray Computed , Neutrophils
5.
HLA ; 103(5): e15518, 2024 May.
Article En | MEDLINE | ID: mdl-38733247

Donor-derived cell-free DNA (dd-cfDNA) has been widely studied as biomarker for non-invasive allograft rejection monitoring. Earlier rejection detection enables more prompt diagnosis and intervention, ultimately improving patient treatment and outcomes. This multi-centre study aims to verify analytical performance of a next-generation sequencing-based dd-cfDNA assay at end-user environments. Three independent laboratories received the same experimental design and 16 blinded samples to perform cfDNA extraction and the dd-cfDNA assay workflow. dd-cfDNA results were compared between sites and against manufacturer validation to evaluate concordance, reproducibility, repeatability and verify analytical performance. A total of 247 sample libraries were generated across 18 runs, with completion time of <24 h. A 96.0% first pass rate highlighted minimal failures. Overall observed versus expected dd-cfDNA results demonstrated good concordance and a strong positive correlation with linear least squares regression r2 = 0.9989, and high repeatability and reproducibility within and between sites, respectively (p > 0.05). Manufacturer validation established limit of blank 0.18%, limit of detection 0.23% and limit of quantification 0.23%, and results from independent sites verified those limits. Parallel analyses illustrated no significant difference (p = 0.951) between dd-cfDNA results with or without recipient genotype. The dd-cfDNA assay evaluated here has been verified as a reliable method for efficient, reproducible dd-cfDNA quantification in plasma from solid organ transplant recipients without requiring genotyping. Implementation of onsite dd-cfDNA testing at clinical laboratories could facilitate earlier detection of allograft injury, bearing great potential for patient care.


Cell-Free Nucleic Acids , Graft Rejection , High-Throughput Nucleotide Sequencing , Organ Transplantation , Tissue Donors , Transplant Recipients , Humans , Cell-Free Nucleic Acids/blood , High-Throughput Nucleotide Sequencing/methods , Reproducibility of Results , Graft Rejection/diagnosis , Graft Rejection/blood , Graft Rejection/genetics , Biomarkers/blood
6.
Infect Dis Clin North Am ; 38(2): 361-380, 2024 Jun.
Article En | MEDLINE | ID: mdl-38729666

In the article, the authors review antibiotic treatment options for both acute uncomplicated UTI and complicated UTI. In addition, they review alternative regimens which are needed in the setting of drug-resistant pathogens including vancomycin-resistant Enterococcus, -extended-spectrum beta-lactamase-producing Enterobacterales (ESBL-E), carbapenem-resistant Enterobacterales, and carbapenem-resistant Pseudomonas, which are encountered with more frequency.


Anti-Bacterial Agents , Kidney Transplantation , Transplant Recipients , Urinary Tract Infections , Humans , Urinary Tract Infections/diagnosis , Urinary Tract Infections/drug therapy , Urinary Tract Infections/microbiology , Kidney Transplantation/adverse effects , Anti-Bacterial Agents/therapeutic use
7.
Front Public Health ; 12: 1355179, 2024.
Article En | MEDLINE | ID: mdl-38741913

Backgrounds: Improving quality of life (QOL) is one of the main aims of lung transplantation (LTx). There is a need to identify those who have poor quality of life early. However, research addressing inter individual quality of life variability among them is lacking. This study aims to identify group patterns in quality of life among lung transplant recipients and examine the predictors associated with quality of life subgroups. Methods: In total, 173 lung transplant recipients were recruited from one hospital in Guangdong Province between September 2022 and August 2023. They were assessed using the Lung Transplant Quality of Life scale (LT-QOL), Mindful Attention Awareness Scale (MAAS), Life Orientation Test-Revised scale (LOT-R), and Positive and Negative Affect Scale (PANAS). Latent profile analysis was used to identify QOL subtypes, and logistic regression analysis was used to examine the associations between latent profiles and sociodemographic and psychosocial characteristics. Results: Two distinct QOL profiles were identified: "low HRQOL" profile [N = 53 (30.94%)] and "high HRQOL" profile [N = 120 (69.06%)]. Single lung transplant recipients, and patients who reported post-transplant infection, high levels of negative emotion or low levels of mindfulness and optimism were significantly correlated with the low QOL subgroup. Conclusion: Using the domains of the LT-QOL scale, two profiles were identified among the lung transplant recipients. Our findings highlighted that targeted intervention should be developed based on the characteristics of each latent class, and timely attention must be paid to patients who have undergone single lung transplantation, have had a hospital readmission due to infection, exhibit low levels of optimism, low levels of mindfulness or high negative emotions.


Lung Transplantation , Quality of Life , Transplant Recipients , Humans , Quality of Life/psychology , Lung Transplantation/psychology , Female , Male , Middle Aged , Adult , Transplant Recipients/psychology , Transplant Recipients/statistics & numerical data , Surveys and Questionnaires , China , Mindfulness , Latent Class Analysis
8.
Surg Infect (Larchmt) ; 25(4): 272-290, 2024 May.
Article En | MEDLINE | ID: mdl-38700753

Background: Improvements in liver transplant (LT) outcomes are attributed to advances in surgical techniques, use of potent immunosuppressants, and rigorous pre-LT testing. Despite these improvements, post-LT infections remain the most common complication in this population. Bacteria constitute the most common infectious agents, while fungal and viral infections are also frequently encountered. Multi-drug-resistant bacterial infections develop because of polymicrobial overuse and prolonged hospital stays. Immediate post-LT infections are commonly caused by viruses. Conclusions: Appropriate vaccination, screening of both donor and recipients before LT and antiviral prophylaxis in high-risk individuals are recommended. Antimicrobial drug resistance is common in high-risk LT and associated with poor outcomes; epidemiology and management of these cases is discussed. Additionally, we also discuss the effect of coronavirus disease 2019 (COVID-19) infection and monkeypox in the LT population.


COVID-19 , Liver Transplantation , Transplant Recipients , Humans , Liver Transplantation/adverse effects , COVID-19/epidemiology , Bacterial Infections/epidemiology , Bacterial Infections/drug therapy , Bacterial Infections/prevention & control , Postoperative Complications/epidemiology , Postoperative Complications/prevention & control , SARS-CoV-2 , Mycoses/epidemiology , Mycoses/drug therapy , Virus Diseases/epidemiology , Virus Diseases/prevention & control
9.
Pediatr Transplant ; 28(4): e14786, 2024 Jun.
Article En | MEDLINE | ID: mdl-38766983

BACKGROUND: Adult kidney transplant recipients (KTRs) fully vaccinated against COVID-19 have substantial morbidity and mortality related to SARS-CoV-2 infection compared with the general population. However, little is known regarding the safety and efficacy of the COVID-19 vaccination series in pediatric KTRs. METHODS: A multicenter, retrospective observational study was performed across nine pediatric transplantation centers. Eligible KTRs fully vaccinated against COVID-19 were enrolled and data were collected pertaining to SARS-CoV-2 infection incidence and severity, graft outcomes and post-vaccination safety profile, as well as overall patient survival. RESULTS: A total of 247 patients were included in this investigation with a median age at transplantation of 11 years (IQR 5-15). SARS-CoV-2 infection was observed in 30/110 (27.27%) of fully vaccinated patients, tested post-transplant, within the defined follow-up period. Of these patients, 6/30 (18.18%) required hospitalization and 3/30 (12.12%) required reduction in immunosuppression, with no reported deaths. De novo donor-specific antibodies (DSAs) were found in 8/86 (9.30%) of DSA-tested patients with two experiencing rejection and subsequent graft loss. The overall incidence of rejection and graft loss among the total cohort was 11/247 (4.45%) and 6/247 (3.64%), respectively. A 100% patient survival was observed. CONCLUSIONS: Observationally, infectious outcomes of SARS-CoV-2 in fully vaccinated pediatric KTRs are excellent, with a low incidence of infection requiring hospitalization and no associated deaths. Though de novo DSAs were observed, there was minimal graft rejection and graft loss reported in the total cohort.


COVID-19 Vaccines , COVID-19 , Kidney Transplantation , Humans , Child , Male , Retrospective Studies , Female , COVID-19/prevention & control , COVID-19/epidemiology , Adolescent , COVID-19 Vaccines/adverse effects , COVID-19 Vaccines/administration & dosage , Child, Preschool , SARS-CoV-2/immunology , Graft Rejection/prevention & control , Transplant Recipients , Incidence , Vaccination , Graft Survival
11.
Int J Mol Sci ; 25(9)2024 Apr 26.
Article En | MEDLINE | ID: mdl-38731927

Bordetella hinzii (B. hinzii), a Gram-negative bacillus commonly associated with respiratory infections in animals, has garnered attention for its sporadic cases in humans, particularly in immunocompromised individuals. Despite its opportunistic nature, there remains limited understanding regarding its pathogenicity, diagnostic challenges, and optimal treatment strategies, especially in the context of immunosuppression. Herein, we present the first documented case of acute bronchitis caused by B. hinzii in an immunocompromised patient following double-lung transplantation. The patient, a former smoker with sarcoidosis stage IV, underwent transplant surgery and subsequently developed a febrile episode, leading to the identification of B. hinzii in broncho-alveolar lavage samples. Antimicrobial susceptibility testing revealed resistance to multiple antibiotics, necessitating tailored treatment adjustments. Our case underscores the importance of heightened awareness among clinicians regarding B. hinzii infections and the imperative for further research to elucidate its epidemiology and optimal management strategies, particularly in immunocompromised populations.


Bordetella Infections , Bordetella , Immunocompromised Host , Lung Transplantation , Lung Transplantation/adverse effects , Humans , Bordetella/isolation & purification , Bordetella Infections/microbiology , Bordetella Infections/diagnosis , Male , Middle Aged , Anti-Bacterial Agents/therapeutic use , Anti-Bacterial Agents/pharmacology , Transplant Recipients
12.
Infect Disord Drug Targets ; 24(4): 72-75, 2024.
Article En | MEDLINE | ID: mdl-38757699

Background: With the emergence of vaccines for COVID-19, mortality and severity of disease have decreased. However, patients with certain comorbidities, such as immunosuppression, CKD, and renal transplant, still have higher mortality rates as compared to the general population. Current data suggests that the risk of developing COVID-19 among transplant patients was reported to be about 5%, which is significantly higher than the risk rate of 0.3% in the general population. Studies utilizing larger sample sizes (i.e., multiple cohorts, sites, hospitals) comparing COVID-19 outcomes among renal transplant patients with a control group are lacking.

Objective: The purpose of this descriptive study was to compare the mortality rate between vaccinated and unvaccinated kidney transplant recipients.

Methods: Participants were recruited at a community-based transplant clinic in West Texas.

Results: Among the group of participants who tested positive for COVID-19 between 2020 and 2022, higher mortality rates and longer hospital stays were noted among those unvaccinated (72% unvaccinated had greater than 5-day length of stay vs. 33% vaccinated).

Conclusion: Our study suggests that vaccination against COVID-19 decreases mortality rates in kidney transplant recipients.

.


COVID-19 , Kidney Transplantation , Transplant Recipients , Vaccination , Humans , Male , COVID-19/prevention & control , COVID-19/mortality , COVID-19/epidemiology , Female , Middle Aged , Retrospective Studies , Transplant Recipients/statistics & numerical data , Adult , Aged , COVID-19 Vaccines/administration & dosage , Texas/epidemiology , SARS-CoV-2/immunology , Length of Stay/statistics & numerical data
14.
Virulence ; 15(1): 2351266, 2024 12.
Article En | MEDLINE | ID: mdl-38717195

Background: The COVID-19 pandemic has led to millions of fatalities globally. Kidney transplant (KT) patients, given their comorbidities and under immunosuppressant drugs, are identified as a high-risk group. Though vaccination remains pivotal for pandemic control, some studies indicate that KT exhibits diminished immune reactions to SARS-CoV-2 vaccines. Therefore, evaluating the vaccine responses in KT, especially the humoral responses against emergent variants is crucial.Methods: We developed a multiplexed SARS-CoV-2 variant protein microarray, incorporating the extracellular domain (ECD) and the receptor binding domain (RBD) of the spike proteins from the variants. This was employed to investigate the collective humoral responses after administering two doses of mRNA-1273 and AZD1222 vaccines in KT under immunosuppressive drugs and in healthy controls.Results: After two doses of either mRNA-1273 or AZD1222, the KT generally showed lower surrogate neutralizing and total antibodies against spike ECD in multiple variants compared to healthy controls. Although two doses of mRNA-1273 induced 1.5-2 fold more surrogate neutralizing and total antibodies than AZD1222 in healthy controls, the KT subjects with two doses of mRNA-1273 generally exhibited higher surrogate neutralizing but similar total antibodies against spike ECD in multiple variants. There were moderate to high correlations between the surrogate neutralizing and total antibodies against spike ECDs.Conclusion: This study offers pivotal insights into the relative vulnerability of KT concerning humoral immunity and the evolving mutations of SARS-CoV-2. Such findings are useful for evaluating vaccine responses and recommending vaccine episodes for KT.


2019-nCoV Vaccine mRNA-1273 , Antibodies, Neutralizing , Antibodies, Viral , COVID-19 Vaccines , COVID-19 , Immunity, Humoral , Kidney Transplantation , SARS-CoV-2 , Spike Glycoprotein, Coronavirus , Humans , SARS-CoV-2/immunology , SARS-CoV-2/genetics , COVID-19/prevention & control , COVID-19/immunology , COVID-19 Vaccines/immunology , COVID-19 Vaccines/administration & dosage , Antibodies, Viral/blood , Male , Middle Aged , Female , Spike Glycoprotein, Coronavirus/immunology , Spike Glycoprotein, Coronavirus/genetics , 2019-nCoV Vaccine mRNA-1273/administration & dosage , 2019-nCoV Vaccine mRNA-1273/immunology , Adult , Antibodies, Neutralizing/blood , Antibodies, Neutralizing/immunology , Immunosuppressive Agents/administration & dosage , Vaccination , Aged , Transplant Recipients
15.
Lancet Healthy Longev ; 5(5): e346-e355, 2024 May.
Article En | MEDLINE | ID: mdl-38705152

BACKGROUND: Following the introduction of an algorithm aiming to maximise life-years gained from liver transplantation in the UK (the transplant benefit score [TBS]), donor livers were redirected from younger to older patients, mortality rate equalised across the age range and short-term waiting list mortality reduced. Understanding age-related prioritisation has been challenging, especially for younger patients and clinicians allocating non-TBS-directed livers. We aimed to assess age-related prioritisation within the TBS algorithm by modelling liver transplantation prioritisation based on data from a UK transplant unit and comparing these data with other regions. METHODS: In this population-based modelling study, serum parameters and age at liver transplantation assessment of patients attending the Scottish Liver Transplant Unit, Edinburgh, UK, between December, 2002, and November, 2023, were combined with representative synthetic data to model TBS survival predictions, which were compared according to age group (25-49 years vs ≥60 years), chronic liver disease severity, and disease cause. Models for end-stage liver disease (UKELD [UK], MELD [Eurotransplant region], and MELD 3.0 [USA]) were used as validated comparators of liver disease severity. FINDINGS: Of 2093 patients with chronic liver disease, 1808 (86%) had complete datasets and liver disease parameters consistent with eligibility for the liver transplant waiting list in the UK (UKELD ≥49). Disease severity as assessed by UKELD, MELD, and MELD 3.0 did not differ by age (median UKELD scores of 56 for patients aged ≥60 years vs 56 for patients aged 25-49 years; MELD scores of 16 vs 16; and MELD 3.0 scores of 18 vs 18). TBS increased with advancing age (R=0·45, p<0·0001). TBS predicted that transplantation in patients aged 60 years or older would provide a two-fold greater net benefit at 5 years than in patients aged 25-49 years (median TBS 1317 [IQR 1116-1436] in older patients vs 706 [411-1095] in younger patients; p<0·0001). Older patients were predicted to have shorter survival without transplantation than younger patients (263 days [IQR 144-473] in older patients vs 861 days [448-1164] in younger patients; p<0·0001) but similar survival after transplantation (1599 days [1563-1628] vs 1573 days [1525-1614]; p<0·0001). Older patients could reach a TBS for which a liver offer was likely below minimum criteria for transplantation (UKELD <49), whereas many younger patients were required to have high-urgent disease (UKELD >60). US and Eurotransplant programmes did not prioritise according to age. INTERPRETATION: The UK liver allocation algorithm prioritises older patients for transplantation by predicting that advancing age increases the benefit from liver transplantation. Restricted follow-up and biases in waiting list data might limit the accuracy of these benefit predictions. Measures beyond overall waiting list mortality are required to fully capture the benefits of liver transplantation. FUNDING: None.


Liver Transplantation , Waiting Lists , Humans , Liver Transplantation/mortality , Middle Aged , Adult , United Kingdom/epidemiology , Male , Age Factors , Female , End Stage Liver Disease/surgery , End Stage Liver Disease/mortality , Aged , Algorithms , Severity of Illness Index , Transplant Recipients/statistics & numerical data
16.
Pediatr Transplant ; 28(4): e14777, 2024 Jun.
Article En | MEDLINE | ID: mdl-38702932

BACKGROUND: Adolescent and young adult (AYA) solid organ transplant (SOT) recipients experience increased rates of rejection and graft loss surrounding the time of health care transition, in part due to poor medication adherence. This study aims to examine the impact of a once-daily formulation of tacrolimus, LCP-tacrolimus (LCPT), on medication adherence for AYA SOT patients. METHODS: A retrospective descriptive analysis was performed for all patients who underwent SOT and were prescribed LCPT after the age of 12 at our single-center pediatric hospital. Medication adherence was assessed via provider documentation and the medication level variability index (MLVI). RESULTS: Twenty-nine patients were prescribed LCPT as part of their immunosuppression regimen. Twenty patients were converted to LCPT from immediate-acting (IR) tacrolimus; six patients were initiated immediately following transplant, and three patients were unable to receive LCPT due to insurance denial. There was a numeric improvement in medication adherence for converted patients when measured by provider assessment (45.0% vs. 68.4%, p = .140) and MLVI (40.0% vs. 71.4%, p = .276), though these did not reach statistical significance. There were no differences in episodes of rejection or adverse effects. LCPT prescription was not associated with decreased medication burden, and two patients transitioned back to IR tacrolimus due to increased cost. CONCLUSIONS: LCPT use did not significantly improve patient adherence; however, it resulted in numerically higher perceived and measured adherence rates. LCPT appears to be safe and effective in the management of SOT recipients; however, it may not affect pill burden and may result in a higher financial burden. Use may be considered for a select group of AYA SOT recipients.


Graft Rejection , Immunosuppressive Agents , Medication Adherence , Organ Transplantation , Tacrolimus , Humans , Tacrolimus/administration & dosage , Tacrolimus/therapeutic use , Adolescent , Retrospective Studies , Male , Female , Immunosuppressive Agents/administration & dosage , Immunosuppressive Agents/therapeutic use , Young Adult , Graft Rejection/prevention & control , Transplant Recipients , Drug Administration Schedule , Child , Adult
17.
Transpl Int ; 37: 12605, 2024.
Article En | MEDLINE | ID: mdl-38711816

Patients of Asian and black ethnicity face disadvantage on the renal transplant waiting list in the UK, because of lack of human leucocyte antigen and blood group matched donors from an overwhelmingly white deceased donor pool. This study evaluates outcomes of renal allografts from Asian and black donors. The UK Transplant Registry was analysed for adult deceased donor kidney only transplants performed between 2001 and 2015. Asian and black ethnicity patients constituted 12.4% and 6.7% of all deceased donor recipients but only 1.6% and 1.2% of all deceased donors, respectively. Unadjusted survival analysis demonstrated significantly inferior long-term allograft outcomes associated with Asian and black donors, compared to white donors. On Cox-regression analysis, Asian donor and black recipient ethnicities were associated with poorer outcomes than white counterparts, and on ethnicity matching, compared with the white donor-white recipient baseline group and adjusting for other donor and recipient factors, 5-year graft outcomes were significantly poorer for black donor-black recipient, Asian donor-white recipient, and white donor-black recipient combinations in decreasing order of worse unadjusted 5-year graft survival. Increased deceased donation among ethnic minorities could benefit the recipient pool by increasing available organs. However, it may require a refined approach to enhance outcomes.


Asian People , Black People , Graft Survival , Kidney Transplantation , Tissue Donors , Humans , United Kingdom , Male , Female , Adult , Middle Aged , Tissue Donors/supply & distribution , Black People/statistics & numerical data , Registries , White People/statistics & numerical data , Treatment Outcome , Aged , Proportional Hazards Models , Waiting Lists , Transplant Recipients/statistics & numerical data
18.
Clin Transplant ; 38(5): e15325, 2024 May.
Article En | MEDLINE | ID: mdl-38716770

BACKGROUND/AIMS: Direct-acting antiviral (DAA) therapy has revolutionized solid organ transplantation by providing an opportunity to utilize organs from HCV-viremic donors. Though transplantation of HCV-viremic donor organs into aviremic recipients is safe in the short term, midterm data on survival and post-transplant complications is lacking. We provide a midterm assessment of complications of lung transplantation (LT) up to 2 years post-transplant, including patient and graft survival between HCV-viremic transplantation (D+) and HCV-aviremic transplantation (D-). METHODS: This is a retrospective cohort study including 500 patients from 2018 to 2022 who underwent LT at our quaternary care institution. Outcomes of patients receiving D+ grafts were compared to those receiving D- grafts. Recipients of HCV antibody+ but PCR- grafts were treated as D- recipients. RESULTS: We identified 470 D- and 30 D+ patients meeting inclusion criteria. Crude mortality did not differ between groups (p = .43). Patient survival at years 1 and 2 did not differ between D+ and D- patients (p = .89, p = .87, respectively), and graft survival at years 1 and 2 did not differ between the two groups (p = .90, p = .88, respectively). No extrahepatic manifestations or fibrosing cholestatic hepatitis (FCH) occurred among D+ recipients. D+ and D- patients had similar rates of post-transplant chronic lung allograft rejection (CLAD) (p = 6.7% vs. 12.8%, p = .3), acute cellular rejection (60.0% vs. 58.0%, p = .8) and antibody-mediated rejection (16.7% vs. 14.2%, p = .7). CONCLUSION: There is no difference in midterm patient or graft survival between D+ and D-LT. No extrahepatic manifestations of HCV occurred. No differences in any type of rejection including CLAD were observed, though follow-up for CLAD was limited. These results provide additional support for the use of HCV-viremic organs in selected recipients in LT.


Graft Rejection , Graft Survival , Hepacivirus , Hepatitis C , Lung Transplantation , Postoperative Complications , Viremia , Humans , Lung Transplantation/adverse effects , Female , Male , Retrospective Studies , Middle Aged , Follow-Up Studies , Prognosis , Hepatitis C/surgery , Hepatitis C/virology , Hepacivirus/isolation & purification , Viremia/virology , Viremia/etiology , Survival Rate , Graft Rejection/etiology , Risk Factors , Tissue Donors/supply & distribution , Adult , Antiviral Agents/therapeutic use , Transplant Recipients
19.
Mycopathologia ; 189(3): 43, 2024 May 06.
Article En | MEDLINE | ID: mdl-38709328

During an epidemiological survey, a potential novel species within the basidiomycetous yeast genus Trichosporon was observed. The clinical strain was obtained from a urine sample taken from a Brazilian kidney transplant recipient. The strain was molecularly identified using the intergenic spacer (IGS1) ribosomal DNA locus and a subsequent phylogenetic analysis showed that multiple strains that were previously reported by other studies shared an identical IGS1-genotype most closely related to that of Trichosporon inkin. However, none of these studies provided an in-depth characterization of the involved strains to describe it as a new taxon. Here, we present the novel clinically relevant yeast for which we propose the name Trichosporon austroamericanum sp. nov. (holotype CBS H-24937). T. austroamericanum can be distinguished from other siblings in the genus Trichosporon using morphological, physiological, and phylogenetic characters.


DNA, Fungal , DNA, Ribosomal Spacer , Phylogeny , Sequence Analysis, DNA , Transplant Recipients , Trichosporon , Trichosporonosis , Trichosporon/classification , Trichosporon/genetics , Trichosporon/isolation & purification , DNA, Ribosomal Spacer/genetics , DNA, Ribosomal Spacer/chemistry , DNA, Fungal/genetics , Humans , Brazil , Trichosporonosis/microbiology , Cluster Analysis , Mycological Typing Techniques , Kidney Transplantation , Microscopy , Genotype
20.
BMC Infect Dis ; 24(1): 473, 2024 May 06.
Article En | MEDLINE | ID: mdl-38711014

BACKGROUND: The incidence of Talaromyces marneffei (T. marneffei) infection has increased in recent years with the development of organ transplantation and the widespread use of immunosuppressive agents. However, the lack of clinical suspicion leading to delay or misdiagnosis is an important reason for the high mortality rate in non-human immunodeficiency virus (HIV) and non-endemic population. Herein, we report a case of disseminated T. marneffei infection in a non-HIV and non-endemic recipient after renal transplant, who initially presented with skin rashes and subcutaneous nodules and developed gastrointestinal bleeding. CASE PRESENTATION: We describe a 54-year-old renal transplantation recipient presented with scattered rashes, subcutaneous nodules and ulcerations on the head, face, abdomen, and right upper limb. The HIV antibody test was negative. The patient had no obvious symptoms such as fever, cough, etc. Histopathological result of the skin lesion sites showed chronic suppurative inflammation with a large number of fungal spores. Subsequent fungal culture suggested T. marneffei infection. Amphotericin B deoxycholate was given for antifungal treatment, and there was no deterioration in the parameters of liver and kidney function. Unfortunately, the patient was soon diagnosed with gastrointestinal bleeding, gastrointestinal perforation and acute peritonitis. Then he rapidly developed multiple organ dysfunction syndrome and abandoned treatment. CONCLUSIONS: The risk of fatal gastrointestinal bleeding can be significantly increased in kidney transplant patients with T. marneffei infection because of the long-term side effects of post-transplant medications. Strengthening clinical awareness and using mNGS or mass spectrometry technologies to improve the detection rate and early diagnosis of T. marneffei are crucial for clinical treatment in non-HIV and non-endemic population.


Antifungal Agents , Deoxycholic Acid , Kidney Transplantation , Mycoses , Talaromyces , Transplant Recipients , Humans , Talaromyces/isolation & purification , Kidney Transplantation/adverse effects , Middle Aged , Male , Mycoses/diagnosis , Mycoses/drug therapy , Mycoses/microbiology , Antifungal Agents/therapeutic use , Fatal Outcome , Dermatomycoses/diagnosis , Dermatomycoses/microbiology , Dermatomycoses/drug therapy , Amphotericin B/therapeutic use , Drug Combinations
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