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1.
Chemistry ; : e202401959, 2024 Jul 08.
Article in English | MEDLINE | ID: mdl-38975973

ABSTRACT

Near-infrared (NIR) absorbing electron donor-acceptor (D-A) chromophores have been at the forefront of current energy research owing to their facile charge transfer (CT) characteristics, which are primitive for photovoltaic applications. Herein, we have designed and developed a new set of benzothiadiazole (BTD)-based tetracyanobutadiene (TCBD)/dicyanoquinodimethane (DCNQ)-embedded multimodular D-A systems (BTD1-BTD6) and investigated their inherent photo-electro-chemical responses for the first time having identical and mixed terminal donors of variable donor-ability. Apart from poor luminescence, the appearance of broad low-lying optical transitions extendable even in the NIR region (> 1000 nm), particularly in the presence of the auxiliary acceptors, are indicative of underlying nonradiative excited state processes leading to strong intramolecular CT and subsequent charge separation (CS) processes in these D-A constructs. The spectral and temporal responses of different photoproducts are obtained from  transient studies. All the systems are found to be susceptible to ultrafast (~ps) CT and CS before carrier recombination to the ground state, which is, however, significantly facilitated after incorporation of the secondary TCBD/DCNQ acceptors, leading to faster and thus efficient CT processes. These findings are likely to expand the horizons of BTD-based multimodular CT systems to revolutionize the realm of solar energy conversion and associated photonic applications.

2.
ChemSusChem ; : e202401114, 2024 Jul 08.
Article in English | MEDLINE | ID: mdl-38975970

ABSTRACT

C─H Functionalization of heteroarenes stands as a potent instrument in organic synthesis, and with the incorporation of visible light, it emerged as a transformative game-changer. In this domain, electron donor-acceptor (EDA) complex, formed through the pairing of an electron-rich substrate with an electron-accepting molecule, has garnered substantial consideration in recent years due to the related avoidance of the requirement of photocatalyst as well as oxidant. EDA complexes can undergo photoactivation under mild conditions and exhibit high functional group tolerance, making them potentially suitable for the functionalization of biologically relevant heteroarenes. This review article provides an overview of recent advancements in the field of C─H functionalization of heteroarenes via EDA complex photoactivation with literature coverage up to April, 2024.

3.
Res Sq ; 2024 Jun 13.
Article in English | MEDLINE | ID: mdl-38947014

ABSTRACT

Background: The storage time of banked donor human milk (DHM) administered in an academic hospital to critically ill preterm neonates was previously unknown. Objective: This study was designed to determine the storage time of banked DHM by measurements obtained at the hospital level (by lot finish date) and individual patient level (by feeding date) over 2-year observation period. Results: Both methods of measuring storage time (hospital-level and patient-level) showed that DHM was stored on average 8 ±1 months before use. Variations in storage time fluctuated across months with a minimum and maximum storage duration of 119 to 317 days. Most infants received a median of 3 [2-5 IQR] unique lots of DHM. Conclusion: The storage time of DHM was successfully measured. Over 95% of DHM received was stored longer than 6 months. Storage times varied widely, uncovering a potential area of future research.

4.
Int Breastfeed J ; 19(1): 47, 2024 Jul 06.
Article in English | MEDLINE | ID: mdl-38970117

ABSTRACT

BACKGROUND: Breastfeeding is the biological norm for feeding infants and young children. When mothers' breastmilk is unavailable, donor human milk (DHM) from a human milk bank (HMB) becomes the next option for small vulnerable newborns. A comprehensive cost analysis is essential for understanding the investments needed to establish, operate, and scale up HMBs. This study aims to estimate and analyze such costs at the first facility established in Vietnam. METHODS: An activity-based costing ingredients (ABC-I) approach was employed, with the cost perspective from service provision agencies (specifically, the project conducted at Da Nang Hospital for Women and Children and Development Partners). Estimated financial costs, based on actual expenditures, were measured in 2023 local currency and then converted to 2023 US dollars (USD). We examined three scenarios: 1) direct start-up costs + indirect start-up costs + implementation costs, 2) direct start-up costs + implementation costs, and 3) capital costs + implementation costs over the 6.5 years of operation. RESULTS: The total start-up cost was USD 616,263, with total expenditure on direct activities at USD 228,131 and indirect activities at USD 388,132. Investment in equipment accounted for the largest proportion (USD 84,213). The monthly costs of Da Nang HMB were USD 25,217, 14,565, and 9,326, corresponding to scenarios 1, 2, and 3, respectively. Over HMB's 6.5 years of operation, on average, the unit costs were USD 166, USD 96, and USD 62 for DHM received and USD 201, USD 116, and USD 74 for pasteurized DHM meeting specified criteria in the corresponding scenarios. Unit costs were highest in the initial six months, decreased, and reached their lowest levels after a year. Then, the unit costs experienced an increase in late 2020 and early 2021. CONCLUSION: Although the unit cost of DHM in Da Nang HMB is comparable to that in certain neighboring countries, intentional measures to reduce disposal rates, improve HMB efficiency, motivate more community-based donors, and establish an HMB service network should be implemented to lower costs.


Subject(s)
Costs and Cost Analysis , Milk Banks , Milk, Human , Humans , Vietnam , Milk Banks/economics , Female , Infant, Newborn , Infant , Breast Feeding/economics
5.
Microbiome ; 12(1): 122, 2024 Jul 06.
Article in English | MEDLINE | ID: mdl-38970126

ABSTRACT

BACKGROUND: Fecal microbiota transplantation (FMT) is a therapeutic intervention used to treat diseases associated with the gut microbiome. In the human gut microbiome, phages have been implicated in influencing human health, with successful engraftment of donor phages correlated with FMT treatment efficacy. The impact that gastrointestinal phages exert on human health has primarily been connected to their ability to modulate the bacterial communities in the gut. Nonetheless, how FMT affects recipients' phage populations, and in turn, how this influences the gut environment, is not yet fully understood. In this study, we investigated the effects of FMT on the phageome composition of participants within the Gut Bugs Trial (GBT), a double-blind, randomized, placebo-controlled trial that investigated the efficacy of FMT in treating obesity and comorbidities in adolescents. Stool samples collected from donors at the time of treatment and recipients at four time points (i.e., baseline and 6 weeks, 12 weeks, and 26 weeks post-intervention), underwent shotgun metagenomic sequencing. Phage sequences were identified and characterized in silico to examine evidence of phage engraftment and to assess the extent of FMT-induced alterations in the recipients' phageome composition. RESULTS: Donor phages engrafted stably in recipients following FMT, composing a significant proportion of their phageome for the entire course of the study (33.8 ± 1.2% in females and 33.9 ± 3.7% in males). Phage engraftment varied between donors and donor engraftment efficacy was positively correlated with their phageome alpha diversity. FMT caused a shift in recipients' phageome toward the donors' composition and increased phageome alpha diversity and variability over time. CONCLUSIONS: FMT significantly altered recipients' phage and, overall, microbial populations. The increase in microbial diversity and variability is consistent with a shift in microbial population dynamics. This proposes that phages play a critical role in modulating the gut environment and suggests novel approaches to understanding the efficacy of FMT in altering the recipient's microbiome. TRIAL REGISTRATION: The Gut Bugs Trial was registered with the Australian New Zealand Clinical Trials Registry (ACTR N12615001351505). Trial protocol: the trial protocol is available at https://bmjopen.bmj.com/content/9/4/e026174 . Video Abstract.


Subject(s)
Bacteriophages , Fecal Microbiota Transplantation , Feces , Gastrointestinal Microbiome , Obesity , Humans , Fecal Microbiota Transplantation/methods , Bacteriophages/physiology , Bacteriophages/classification , Bacteriophages/isolation & purification , Bacteriophages/genetics , Feces/microbiology , Feces/virology , Obesity/therapy , Obesity/microbiology , Double-Blind Method , Female , Adolescent , Male , Bacteria/classification , Bacteria/virology , Bacteria/genetics , Metagenomics/methods , Treatment Outcome
6.
Heliyon ; 10(12): e32448, 2024 Jun 30.
Article in English | MEDLINE | ID: mdl-38975223

ABSTRACT

The novelty and the essential purpose of this research is the preparation of new anti-inflammatory iron complexes in water green solvent using critical micelle concentration of anionic surface active agent (SAA). Three new anti-inflammatory iron complexes have been prepared. Thiophene-electron (es) donor (D) Schiff base (2-(2-OH-benzylidene)-amino)-4, 5, 6, 7-tetrah ydrobenzo[b] thiophene-3-carbonitrile) has been prepared. Molecular structures of all samples were confirmed based on CNH analysis, 1H NMR and 13C NMR spectra. The molecular structure of Schiff base is further confirmed by computational chemistry using the DFT-B3LYP method, 6-31G (d) basis set. Observed and simulated 1H NMR, UV-Vis. IR/Raman spectra confirmed the molecular structure of D. This Schiff base is intercalated to ferric chloride (FeCl3) giving pure iron charge transfer complex (CTCs). In vitro and kinetic studies confirmed Fe-CTC complexes had (concentration-dependent) potent antimicrobial-, good anti-inflammatory activities. Free radical scavenging activity nitrous oxide (NO.) of Fe (III)CTCs is attributed to geometry Fe(III) ions as distorted octahedral (either monoclinic or triclinic single crystals) via functional groups (-C]N-O, NH2). Elemental analysis and EDS spectra confirmed strong binding between iron and hetero atoms (N, S, O) of D molecules.

7.
Clin Transplant ; 38(7): e15382, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38973768

ABSTRACT

INTRODUCTION: Adults residing in deprived neighborhoods face various socioeconomic stressors, hindering their likelihood of receiving live-donor kidney transplantation (LDKT) and preemptive kidney transplantation (KT). We quantified the association between residential neighborhood deprivation index (NDI) and the likelihood of LDKT/preemptive KT, testing for a differential impact by race and ethnicity. METHODS: We studied 403 937 adults (age ≥ 18) KT candidates (national transplant registry; 2006-2021). NDI and its 10 components were averaged at the ZIP-code level. Cause-specific hazards models were used to quantify the adjusted hazard ratio (aHR) of LDKT and preemptive KT across tertiles of NDI and its 10 components. RESULTS: Candidates residing in high-deprivation neighborhoods were more likely to be female (40.1% vs. 36.2%) and Black (41.9% vs. 17.7%), and were less likely to receive both LDKT (aHR = 0.66, 95% confidence interval [CI]: 0.64-0.67) and preemptive KT (aHR = 0.60, 95% CI: 0.59-0.62) than those in low-deprivation neighborhoods. These associations differedby race and ethnicity (Black: aHRLDKT = 0.58, 95% CI: 0.55-0.62; aHRpreemptive KT = 0.68, 95% CI: 0.63-0.73; Pinteractions: LDKT < 0.001; Preemptive KT = 0.002). All deprivation components were associated with the likelihood of both LDKT and preemptive KT (except median home value): for example, higher median household income (LDKT: aHR = 1.08, 95% CI: 1.07-1.09; Preemptive KT: aHR = 1.10, 95% CI: 1.08-1.11) and educational attainments (≥high school [LDKT: aHR = 1.17, 95% CI: 1.15-1.18; Preemptive KT: aHR = 1.23, 95% CI: 1.21-1.25]). CONCLUSION: Residence in socioeconomically deprived neighborhoods is associated with a lower likelihood of LDKT and preemptive KT, differentially impacting minority candidates. Identifying and understanding which neighborhood-level socioeconomic status contributes to these racial disparities can be instrumental in tailoring interventions to achieve health equity in LDKT and preemptive KT.


Subject(s)
Kidney Transplantation , Living Donors , Neighborhood Characteristics , Humans , Female , Male , Living Donors/supply & distribution , Middle Aged , Adult , Follow-Up Studies , Prognosis , Residence Characteristics , Kidney Failure, Chronic/surgery , Socioeconomic Factors , Registries/statistics & numerical data , Risk Factors , Young Adult , Adolescent
8.
Transpl Int ; 37: 12955, 2024.
Article in English | MEDLINE | ID: mdl-38979119

ABSTRACT

Cigarette smoking is a common risk factor associated with negative long-term outcomes in kidney transplant recipients. However, whether donor smoking decreases graft longevity or negatively impacts recipient survival after kidney transplantation remains unknown. Therefore, this study aims to investigate the long-term outcome in patients who received a kidney graft from a deceased smoking or non-smoking donor. A total of 580 patients were divided into two groups: patients who received a graft from a smoking donor (n = 276) and those who received a graft from a non-smoking donor (n = 304). Analysis of demographic factors showed that the non-smoking cohort was older, had more extended criteria donors and longer warm ischemia times. The primary composite endpoint of patient and graft survival was better in the smoking donor cohort when analyzed using Kaplan-Meier method but not when controlled for covariates in multivariate analyses. These findings do not support a previously reported negative impact of deceased donor smoking on kidney transplant recipients. Thus, the underlying results should not be interpreted in favor of a positive donor smoking history, but rather remind the transplant community that donor smoking should not be considered as a deciding factor in refusing an otherwise acceptable kidney graft.


Subject(s)
Cigarette Smoking , Graft Survival , Kidney Transplantation , Tissue Donors , Humans , Kidney Transplantation/adverse effects , Male , Female , Middle Aged , Adult , Cigarette Smoking/adverse effects , Risk Factors , Treatment Outcome , Kaplan-Meier Estimate , Retrospective Studies , Aged , Smoking/adverse effects
9.
Andrology ; 2024 Jul 02.
Article in English | MEDLINE | ID: mdl-38953503

ABSTRACT

This paper considers the practical and ethical issues related to the death of a sperm donor. It looks at whether sperm banks should check whether the donor is alive at the time the spermatozoa is made available. Knowing that the donor has died in combination with the cause of death can provide important medical information but the chance is very small. However, when the information is available, it may help to decide whether to tell previous recipients and/or to block the remaining samples for future use. A second advantage may be that the donor's offspring can be informed that contact will not be possible and that recipients who are planning to order spermatozoa from an identity-release donor can be told that the donor has died. However, these advantages presume that identifiable equals contactable while there is no strict link between these two conditions.

10.
Saudi Med J ; 45(7): 667-674, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38955448

ABSTRACT

OBJECTIVES: To ascertain the prevalence of transfusion transmissible infections (TTIs) across diverse donor groups in the Najran province. Additionally, to establish a potential association between the development of TTI and the donors' blood group, as determined by the ABO/Rh blood grouping system. METHODS: Blood donation data of 4120 donors, spanning from January to December 2020, were retrospectively reviewed. The blood were screened for TTI markers, including hepatitis B surface antigen (HBsAg), anti-hepatitis B core (anti-HBc), anti-hepatitis C virus (anti-HCV), anti-human immunodeficiency viruses 1 and 2 (anti-HIV1&2), anti-human T-lymphotropic virus types 1 and 2 (anti-HTLV-1&2), and syphilis antigen. RESULTS: Positive TTI markers were detected in 10.9% of the donors. The most detected TTI marker was anti-HBc (8.9%), followed by HBsAg (0.7%). Other markers were individually detected in <1% of the donors. Anti-HBc-positive was significantly elevated among non-Saudi blood donors. There was an association between age groups and anti-HCV (p=0.002), anti-HTLV (p=0.004) and syphilis antigen (p=0.02) markers positivity. The AB positive blood group exhibited the most positivity for TTI markers, followed by O positive blood group. Similarly, association was found between ABO group and HBsAg (p=0.01), anti-HBc (p=0.001), and anti-HCV (p<0.001) markers positivity. CONCLUSION: Emphasis on implementing robust screening measures for donated blood is underscored by this study. There is the need for future study to extensively evaluate TTI status to enhance our understanding of the trend in TTI.


Subject(s)
ABO Blood-Group System , Blood Donors , Hepatitis B Surface Antigens , Humans , Adult , Hepatitis B Surface Antigens/blood , Saudi Arabia/epidemiology , Male , Blood Donors/statistics & numerical data , Retrospective Studies , Female , Middle Aged , Biomarkers/blood , Syphilis/epidemiology , Syphilis/blood , Young Adult , Transfusion Reaction/epidemiology , Transfusion Reaction/blood , Prevalence , Adolescent , Hepatitis B/epidemiology , Hepatitis B/blood , Hepatitis B Antibodies/blood , HIV Infections/epidemiology , HIV Infections/blood
11.
Int Ophthalmol ; 44(1): 306, 2024 Jul 02.
Article in English | MEDLINE | ID: mdl-38955879

ABSTRACT

PURPOSE: To evaluate ophthalmologists' interest and opinions regarding corneal transplantation and donation in Türkiye. MATERIAL AND METHODS: An online questionnaire was prepared using Google Forms, and the electronic link to this questionnaire was sent via WhatsApp to ophthalmologists working in Türkiye. Eighteen open-ended/multiple-choice questions were asked about ophthalmologists' demographic information and their opinions regarding corneal transplantation and donation. The answers were analyzed by transferring the data to Excel. RESULTS: A total of 195 ophthalmologists participated in the survey. While 68.6% of them stated that they wanted to donate their corneas, 21.1% stated that they were undecided, and 10.3% did not want to donate their corneas. While 93.8% of the participants agreed to have a cornea transplant in case of need, 5.7% of them stated that they were undecided, and 0.5% said that they would not accept a cornea transplant. The most frequent (90.5%) reason for being willing to donate one's cornea was to give hope to patients with low vision. The most frequent (46.2%) reason for not wanting to donate one's cornea was the unwillingness to have one's body/eye integrity impaired. The vast majority (80.8%) of the participants thought that there was not enough corneal donation in Türkiye and that this was mostly (85.9%) due to cultural and/or religious reasons. CONCLUSIONS: Even in a sample with a high level of education and the most knowledge about corneal transplantation, the willingness to donate corneas may remain below the expected rates. Therefore, it is necessary to alleviate unrealistic concerns and prejudices about corneal donation and transplantation.


Subject(s)
Attitude of Health Personnel , Corneal Transplantation , Ophthalmologists , Tissue Donors , Tissue and Organ Procurement , Humans , Corneal Transplantation/psychology , Ophthalmologists/psychology , Surveys and Questionnaires , Male , Tissue Donors/psychology , Female , Middle Aged , Adult , Turkey , Corneal Diseases/surgery , Eye Banks/statistics & numerical data
12.
Asian J Endosc Surg ; 17(3): e13355, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38956792

ABSTRACT

INTRODUCTION: The left kidney is often preferred for living donor kidney transplantation because of its anatomical advantages. However, the right kidney may be procured due to donor conditions. Few studies have assessed the safety and graft outcome of right retroperitoneal laparoscopic donor nephrectomy (RDN). This study aimed to compare the outcomes between right and left RDN with respect to donor outcome and the graft function of recipients. METHODS: This retrospective study included 230 consecutive living donor kidney transplants performed at our institution between May 2019 and March 2023. We reviewed the outcomes of kidney transplant in the right and left kidneys after RDN. RESULTS: A total of 230 living donor kidney transplants were performed, with 32 donors receiving right RDN (right RDN group) and 198 donors receiving left RDN (left RDN group). The renal veins and ureters were significantly shorter in the right RDN group than in the left RDN group (both p < .001). Donor operation and warm ischemia time were significantly longer in the right RDN group than in the left RDN group (p = .012 and p < .001, respectively). None of the groups exhibited any cases of delayed graft function owing to donor-related reasons. Perioperative changes in the estimated glomerular filtration rate of recipients and death-censored graft survival were not significantly different between the two groups. CONCLUSIONS: In RDN, the outcomes of right donor nephrectomy were comparable to those of left donor nephrectomy in terms of donor safety and recipient renal function.


Subject(s)
Kidney Transplantation , Laparoscopy , Living Donors , Nephrectomy , Humans , Nephrectomy/methods , Kidney Transplantation/methods , Female , Retrospective Studies , Male , Laparoscopy/methods , Adult , Middle Aged , Retroperitoneal Space/surgery , Graft Survival , Treatment Outcome , Tissue and Organ Harvesting/methods
13.
J Med Virol ; 96(7): e29770, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38949200

ABSTRACT

Donor and recipient human cytomegalovirus (HCMV) seropositive (D+R+) lung transplant recipients (LTRs) often harbor multiple strains of HCMV, likely due to transmitted donor (D) strains and reactivated recipient (R) strains. To date, the extent and timely occurrence of each likely source in shaping the post-transplantation (post-Tx) strain population is unknown. Here, we deciphered the D and R origin of the post-Tx HCMV strain composition in blood, bronchoalveolar lavage (BAL), and CD45+ BAL cell subsets. We investigated either D and/or R formalin-fixed paraffin-embedded blocks or fresh D lung tissue from four D+R+ LTRs obtained before transplantation. HCMV strains were characterized by short amplicon deep sequencing. In two LTRs, we show that the transplanted lung is reseeded by R strains within the first 6 months after transplantation, likely by infiltrating CD14+ CD163+/- alveolar macrophages. In three LTRs, we demonstrate both rapid D-strain dissemination and persistence in the transplanted lung for >1 year post-Tx. Broad inter-host diversity contrasts with intra-host genotype sequence stability upon transmission, during follow-up and across compartments. In D+R+ LTRs, HCMV strains of both, D and R origin can emerge first and dominate long-term in subsequent episodes of infection, indicating replication of both sources despite pre-existing immunity.


Subject(s)
Cytomegalovirus Infections , Cytomegalovirus , Lung Transplantation , Tissue Donors , Transplant Recipients , Humans , Lung Transplantation/adverse effects , Cytomegalovirus/genetics , Cytomegalovirus/classification , Cytomegalovirus Infections/virology , Male , Middle Aged , Female , Adult , Genotype , Lung/virology , Bronchoalveolar Lavage Fluid/virology
14.
J Clin Exp Hepatol ; 14(6): 101446, 2024.
Article in English | MEDLINE | ID: mdl-38946865

ABSTRACT

Background: There is no accepted way to define difficult donor hepatectomy (DiffDH) during open right live donor hepatectomy (ORLDH). There are also no studies exploring association between DiffDH and early donor outcomes or reliable pre-operative predictors of DiffDH. Methods: Consecutive ORLDH performed over 18 months at a single center were included. Intraoperative parameters were used to develop an objective definition of DiffDH. The impact of DiffDH on early postoperative outcomes and achievement of textbook outcome (TO) was evaluated. Donor morphometry data on axial and coronal sections of donor computed tomography (CT) at the level of portal bifurcation were collected. Donor and graft factors predictive of DiffDH were evaluated using univariate and multivariate logistic regression. Results: One-hundred-eleven donors (male: 40.5%, age: 34 ± 9.5 years) underwent ORLDH during the study period. The difficulty score was constructed using five intraoperative parameters, i.e., operating time, transection time, estimated blood loss, need for intraoperative vasopressors, and need for Pringle maneuver. Donors were classified as DiffDH (score ≥ 2) or standard donor hepatectomy (StDH) (score <2). Twenty-nine donors (26%) were classified as DiffDH. DiffDH donors suffered greater all-cause morbidity (P = 0.004) but not major morbidity (Clavien-Dindo score >2; P = 0.651), more perioperative transfusion (P = 0.013), increased postoperative systemic inflammatory response syndrome (P = 0.034), delay in achieving full oral diet (P = 0.047), and a 70% reduced chance of achieving TO as compared to StDH (P = 0.007). On logistic regression analysis, increasing right lobe anteroposterior depth (RLdepth) was identified as an independent predictor of DiffDH (Odds ratio: 2.0 (95% confidence interval = 1.2, 3.3), P < 0.006). Receiver operating characteristic curve analysis identified an RLdepth of >14 cm as the best predictor of DiffDH (sensitivity:79%, specificity: 66%, area under curve = 0.803, P < 0.001). Conclusion: We report a novel definition of DiffDH and show that it is associated with worse postoperative outcomes, including a lesser chance of achieving TO. We also report that DiffDH can be predicted from readily available donor CT parameters.

15.
J Clin Exp Hepatol ; 14(6): 101443, 2024.
Article in English | MEDLINE | ID: mdl-38946866

ABSTRACT

Acute hepatic failure may occasionally be complicated by toxic liver syndrome. Emergency hepatectomy for stabilization followed by delayed graft implantation is a recognized strategy in such cases in the setting of deceased donor liver transplantation. Living donor liver transplantation adds additional complexity to this scenario as the donor liver is a directed donation and failure to stabilize the patient after emergency hepatectomy can lead to a futile live donor hepatectomy, hepar-divisum, or an orphan graft. We report a case where the two-stage strategy was utilized to circumvent this situation. A patient with toxic liver syndrome underwent emergency hepatectomy and was closely monitored in the operating theater. A live donor hepatectomy was started after the recipient demonstrated cardiovascular and neurological stabilization. Graft implantation was completed after an anhepatic period of 9.45 h. To our knowledge, this is the first reported instance of using the two-stage strategy in living-donor-liver-transplantation for toxic liver syndrome to prevent futile donor surgery and achieve double equipoise.

16.
Kidney Med ; 6(7): 100843, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38947773

ABSTRACT

Rationale & Objective: The option for A2/A2B deceased donor kidney transplantation was integrated into the kidney allocation system in 2014 to improve access for B blood group waitlist candidates. Despite excellent reported outcomes, center uptake has remained low across the United States. Here, we examined the effect of implementing an A2/A2B protocol using a cutoff titer of ≤1:8 for IgG and ≤1:16 for IgM on blood group B kidney transplant recipients at a single center. Study Design: Retrospective observational study. Setting & Participants: Blood group B recipients of deceased donor kidney transplants at a single center from January 1, 2019, to December 2022. Exposure: Recipients of deceased donor kidney transplants were analyzed based on donor blood type with comparisons of A2/A2B versus blood group compatible. Outcomes: One-year patient survival, death-censored allograft function, primary nonfunction, delayed graft function, allograft function as measured using serum creatinine levels and estimated glomerular filtration rate at 1 year, biopsy-proven rejection, and need for plasmapheresis. Analytical Approach: Comparison between the A2/A2B and compatible groups were performed using the Fisher test or the χ2 test for categorical variables and the nonparametric Wilcoxon rank-sum test for continuous variables. Results: A total of 104 blood type B patients received a deceased donor kidney transplant at our center during the study period, 49 (47.1%) of whom received an A2/A2B transplant. Waiting time was lower in A2/A2B recipients compared with blood group compatible recipients (57.9 months vs 74.7 months, P = 0.01). A2/A2B recipients were more likely to receive a donor after cardiac death (24.5% vs 1.8%, P < 0.05) and experience delayed graft function (65.3% vs 41.8%). There were no observed differences in the average serum creatinine level or estimated glomerular filtration rate at 1 month, 3 months, and 1 year post kidney transplantation, acute rejection, or primary nonfunction. Limitations: Single-center study. Small cohort size limiting outcome analysis. Conclusions: Implementation of an A2/A2B protocol increased transplant volumes of blood group B waitlisted patients by 83.6% and decreased the waiting time for transplantation by 22.5% with similar transplant outcomes.


Recipient blood type is one of the main determinants of waiting time to receive a deceased donor kidney transplant. Patients with blood type B have some of the longest waiting times for a kidney in the United States. Minorities comprise a large percentage of blood group B waitlist patients, contributing to observed racial differences in kidney transplantation rates. In this study, accepting an A2/A2B incompatible kidney resulted in receiving a kidney transplant almost 18 months earlier compared with receiving a blood group compatible kidney. No differences in outcomes were seen by accepting A2/A2B kidneys.

17.
World J Transplant ; 14(2): 90382, 2024 Jun 18.
Article in English | MEDLINE | ID: mdl-38947961

ABSTRACT

Liver transplantation (LT) provides a life-saving option for cirrhotic patients with complications and hepatocellular carcinoma. Despite the increasing number of liver transplants performed each year, the number of LT candidates on the waitlist remains unchanged due to an imbalance between donor organ supply and the demand which increases the waitlist time and mortality. Living donor liver transplant had a great role in increasing the donor pool and shortened waitlist time for LT candidates. Nevertheless, further strategies can be implemented to increase the pool of potential donors in deceased donor LT, such as reducing the rate of organ discards. Utilizing hepatitis C virus (HCV) seropositive liver grafts is one of the expanded donor organ criteria. A yearly increase of hundreds of transplants is anticipated as a result of maximizing the utilization of HCV-positive organs for HCV-negative recipients. Direct-acting antiviral therapy's efficacy has revolutionized the treatment of HCV infection and the use of HCV-seropositive donors in transplantation. The American Society of Transplantation advises against performing transplants from HCV-infected liver donors (D+) into HCV-negative recipient (R-) unless under Institutional Review Board-approved study rules and with full informed consent of the knowledge gaps associated with such transplants. Proper selection of patients to be transplanted with HCV-infected grafts and confirming their access to direct-acting antivirals if needed is important. National and international consensuses are needed to regulate this process to ensure the maximum benefit and the least adverse events.

18.
World J Transplant ; 14(2): 89825, 2024 Jun 18.
Article in English | MEDLINE | ID: mdl-38947973

ABSTRACT

BACKGROUND: With an ongoing demand for transplantable organs, optimization of donor management protocols, specifically in trauma populations, is important for obtaining a high yield of viable organs per patient. Endocrine management of brain-dead potential organ donors (BPODs) is controversial, leading to heterogeneous clinical management approaches. Previous studies have shown that when levothyroxine was combined with other treatments, including steroids, vasopressin, and insulin, BPODs had better organ recovery and survival outcomes were increased for transplant recipients. AIM: To determine if levothyroxine use in combination with steroids in BPODs increased the number of organs donated in trauma patients. METHODS: A retrospective review of adult BPODs from a single level 1 trauma center over ten years was performed. Exclusion criteria included patients who were not solid organ donors, patients who were not declared brain dead (donation after circulatory death), and patients who did not receive steroids in their hospital course. Levothyroxine and steroid administration, the number of organs donated, the types of organs donated, and demographic information were recorded. Univariate analyses were performed with P < 0.05 considered to be statistically significant. RESULTS: A total of 88 patients met inclusion criteria, 69 (78%) of whom received levothyroxine and steroids (ST/LT group) vs 19 (22%) receiving steroids without levothyroxine (ST group). No differences were observed between the groups for gender, race, pertinent injury factors, age, or other hormone therapies used (P > 0.05). In the ST/LT group, 68.1% (n = 47) donated a high yield (3-5) of organ types per donor compared to 42.1% (n = 8) in the ST group (P = 0.038). There was no difference in the total number of organ types donated between the groups (P = 0.068). CONCLUSION: This study suggests that combining levothyroxine and steroid administration increases high-yield organ donation per donor in BPODs in the trauma patient population. Limitations to this study include the retrospective design and the relatively small number of organ donors who met inclusion criteria. This study is unique in that it mitigates steroid administration as a confounding variable and focuses specifically on the adjunctive use of levothyroxine.

19.
Ann Gastroenterol Surg ; 8(4): 668-680, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38957553

ABSTRACT

Aim: There is limited evidence regarding the feasibility of living-donor liver transplantation (LDLT) for patients aged over 70. The aims of this study were to assess postoperative outcomes in elderly recipients and to ascertain the potential feasibility and acceptability of LDLT. Methods: Data were collected from 762 recipients, including 26 in the elderly group (aged ≥70) and 736 in the younger group (aged <70), and reviewed even by propensity score matching (PSM). Results: No significant differences were observed in the frequency of postoperative complications between the two groups. Additionally, both groups exhibited a comparable 30-day mortality rate after LDLT (3.9% in both) and similar hospital stays (36 days vs. 40 days). The 1-, 3-, and 5-year graft survival rates in the elderly group were 92.0%, which was comparable to those in the younger group (p = 0.517), as confirmed by PSM. Notably, all donors for elderly patients were the children of the recipients, with an average age of 41.6 years, and grafts from donors aged ≥50 years were not utilized, signifying the use of high-quality grafts. Our inclusion criterion for elderly recipients was strictly defined as an ECOG-PS score of 0-2, which played a pivotal role in achieving favorable postoperative outcomes. Conclusion: LDLT can be performed safely for elderly patients aged 70 years or older, provided they have a preserved PS and receive high-quality grafts from younger donors, inevitably all children of elderly recipients. This approach yields acceptable long-term outcomes. Consequently, age alone should not serve as an absolute contraindication for LDLT.

20.
Clin Transplant ; 38(7): e15377, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38952192

ABSTRACT

INTRODUCTION: The decision to become a living donor requires consideration of a complex, interactive array of factors that could be targeted for clinical, policy, and educational interventions. Our objective was to assess how financial barriers interact with motivators, other barriers, and facilitators during this process. METHODS: Data were obtained from a public survey assessing motivators, barriers, and facilitators of living donation. We used multivariable logistic regression and consensus k-means clustering to assess interactions between financial concerns and other considerations in the decision-making process. RESULTS: Among 1592 respondents, the average age was 43; 74% were female and 14% and 6% identified as Hispanic and Black, respectively. Among employed respondents (72%), 40% indicated that they would not be able to donate without lost wage reimbursement. Stronger agreement with worries about expenses and dependent care challenges was associated with not being able to donate without lost wage reimbursement (OR = 1.2, 95% CI = 1.0-1.3; OR = 1.2, 95% CI = 1.1-1.3, respectively). Four respondent clusters were identified. Cluster 1 had strong motivators and facilitators with minimal barriers. Cluster 2 had barriers related to health concerns, nervousness, and dependent care. Clusters 3 and 4 had financial barriers. Cluster 3 also had anxiety related to surgery and dependent care. CONCLUSIONS: Financial barriers interact primarily with health and dependent care concerns when considering living organ donation. Targeted interventions to reduce financial barriers and improve provider communication regarding donation-related risks are needed.


Subject(s)
Decision Making , Living Donors , Motivation , Tissue and Organ Procurement , Humans , Female , Male , Adult , Living Donors/psychology , Tissue and Organ Procurement/economics , Middle Aged , Surveys and Questionnaires , Prognosis , Follow-Up Studies
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