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1.
Am J Transplant ; 24(6): 1046-1056, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38342183

RESUMEN

Donor-derived infections (DDIs) caused by carbapenem-resistant gram-negative bacteria (CR-GNB) in solid organ transplant recipients are potentially life-threatening. In this prospective study, we evaluated the incidence, factors associated with transmission, and the outcome of recipients with unexpected CR-GNB DDIs after the implementation of our local active surveillance system (LASS). LASS provides for early detection of unexpected donor CR-GNB infections, prophylaxis of recipients at high risk, and early diagnosis and treatment of DDIs. Whole genome sequencing confirmed DDI. Among 791 recipients, 38 (4.8%) were at high risk of unexpected CR-GNB DDI: 25 for carbapenem-resistant Enterobacterales (CRE) and 13 for carbapenem-resistant Acinetobacter baumannii (CRAB). Transmission did not occur in 27 (71%) cases, whereas DDIs occurred in 9 of 25 of CRE and 2 of 13 of CRAB cases. Incidence of CR-GNB DDI was 1.4%. Recipients of organs with CR-GNB-positive preservation fluid and liver recipients from a donor with CRE infection were at the highest risk of DDI. There was no difference in length of hospital stay or survival in patients with and without CR-GNB DDI. Our LASS contains transmission and mitigates the negative impacts of CR-GNB DDI. Under well-defined conditions, organs from donors with CR-GNB may be considered after a thorough evaluation of the risk/benefit profile.


Asunto(s)
Carbapenémicos , Infecciones por Bacterias Gramnegativas , Trasplante de Órganos , Donantes de Tejidos , Receptores de Trasplantes , Humanos , Trasplante de Órganos/efectos adversos , Masculino , Carbapenémicos/farmacología , Carbapenémicos/uso terapéutico , Estudios Prospectivos , Femenino , Persona de Mediana Edad , Infecciones por Bacterias Gramnegativas/tratamiento farmacológico , Infecciones por Bacterias Gramnegativas/epidemiología , Adulto , Factores de Riesgo , Incidencia , Estudios de Seguimiento , Pronóstico , Anciano , Bacterias Gramnegativas/efectos de los fármacos , Bacterias Gramnegativas/aislamiento & purificación , Antibacterianos/uso terapéutico , Antibacterianos/farmacología , Complicaciones Posoperatorias
2.
Curr Opin Infect Dis ; 37(2): 112-120, 2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38050739

RESUMEN

PURPOSE OF REVIEW: Skin and soft tissue infections (SSTI) in solid organ transplant (SOT) recipients may be a great challenge for clinicians caring for SOT due to the involvement of both common and opportunistic pathogens associated with a blunted immune response. The purpose of this review is to outline current literature and describe open issues on the management of SSTI in this special population. RECENT FINDINGS: Clinical presentation in SOT recipients can manifest as isolated skin lesions after primary inoculation or be the sign of a disseminated infection. Tissue samples for microscopy and histopathology are crucial to making an accurate diagnosis given the nonspecific and heterogeneous appearance of skin lesions. Multidisciplinary teams are required for a comprehensive diagnosis and management. SUMMARY: SSTI are frequent contributors to morbidity and mortality in SOT. Specific research focused on the clinical presentation, risk factors and management in this special population is needed.


Asunto(s)
Trasplante de Órganos , Infecciones de los Tejidos Blandos , Trasplantes , Humanos , Infecciones de los Tejidos Blandos/diagnóstico , Infecciones de los Tejidos Blandos/epidemiología , Infecciones de los Tejidos Blandos/etiología , Trasplante de Órganos/efectos adversos , Receptores de Trasplantes
3.
Infection ; 52(1): 259-263, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37759073

RESUMEN

CASE PRESENTATION: A pregnant woman developed hepatitis due to a herpes simplex virus 2 primary infection with a severe systemic inflammatory response. Treatment with acyclovir and human immunoglobulin was given and both mother and baby survived. PURPOSE: We provide the first description of the inflammatory response associated with herpetic hepatitis in pregnancy.


Asunto(s)
Hepatitis A , Hepatitis , Herpes Simple , Complicaciones Infecciosas del Embarazo , Embarazo , Femenino , Humanos , Herpesvirus Humano 2 , Herpes Simple/diagnóstico , Herpes Simple/tratamiento farmacológico , Complicaciones Infecciosas del Embarazo/diagnóstico , Complicaciones Infecciosas del Embarazo/tratamiento farmacológico , Síndrome de Liberación de Citoquinas/complicaciones , Aciclovir/uso terapéutico , Hepatitis/complicaciones
4.
Transpl Infect Dis ; 26(2): e14252, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38375963

RESUMEN

OBJECTIVE: Solid organ transplant (SOT) recipients have a poorer SARS-CoV-2 vaccine response and higher risk for COVID-19-associated complications. However, there is no consensus on the current management of COVID-19 and data on persistent COVID-19 rates in SOT recipients are lacking. METHODS: An electronic survey concerning the management of COVID-19 in SOT recipients was distributed among all members of the European Society of Clinical Microbiology and Infectious Diseases (ESCMID) Study Group for Infections in Compromised Hosts (ESGICH) and of the European Society for Organ Transplantation (ESOT). Four major sections were covered: prevention, early COVID-19, late COVID-19, and persistent COVID-19. We developed a structured questionnaire including eight multiple-choice questions with branching logic in case of positive answers and three open-ended questions related to clinical practice. Questions were asked separately for lung and non-lung transplantation. RESULTS: Thirty-two physicians from 24 different centers participated. Most answers (n = 30) were provided by European physicians. Thirty of 32 (93.75%) physicians managed non-lung transplant recipients and 12 of 32 (33.3%) lung transplant recipients. There was a huge variability in practice regarding the treatment of COVID-19, and particularly noticeable when considering lung and non-lung transplant recipients. Main discordances included the use of nirmatrelvir alone or in combination therapy for early COVID-19, the use of immunomodulatory drugs other than steroids for late COVID-19, and the need for treating asymptomatic viral shedding in persistent COVID-19. There was more similarity in terms of prophylaxis recommendations. CONCLUSION: Despite a low number of respondents, this survey shows that there are many differences on how experts manage SARS-CoV-2 infections in SOT recipients.


Asunto(s)
COVID-19 , Trasplante de Órganos , Humanos , Vacunas contra la COVID-19 , SARS-CoV-2 , Encuestas y Cuestionarios , Receptores de Trasplantes
5.
Transpl Infect Dis ; : e14342, 2024 Jul 22.
Artículo en Inglés | MEDLINE | ID: mdl-39037217

RESUMEN

BACKGROUND: The purpose of this study was to understand how transplant infectious disease (TID) physicians assess a potential donor with known or suspected infection and describe posttransplant management. METHODS: We designed a survey of 10 organ offer scenarios and asked questions pertaining to organ acceptability for transplantation and management posttransplant. The survey was distributed to TID clinicians via transplant society listservs and email. Responses were recorded in REDCap, and descriptive statistics were employed. RESULTS: One hundred thirteen infectious disease physicians responded to the survey, of whom 85 completed all cases. Respondents were generally in agreement regarding organ acceptability, although some divergence was seen when evaluating lungs from donors with influenza, tuberculosis, or multidrug-resistant Acinetobacter infection. Posttransplant management showed more variation. Areas of optimization were identified: (1) Further understanding of where risk-mitigation strategies within the donor offer process may improve donor acceptability and therefore organ utilization; (2) importance of recipient considerations in assessing degree of infectious risk; and (3) gaps in evidenced-based data regarding optimal posttransplant management of recipients. CONCLUSION: Evaluation of donor offers by TID clinicians is a complex process. Although the survey does not itself serve to make recommendations regarding best practices, it highlights areas where generation of data to inform acceptance and management practices may allow for improved organ utilization and recipient management.

6.
Transpl Infect Dis ; : e14304, 2024 Jun 03.
Artículo en Inglés | MEDLINE | ID: mdl-38830813

RESUMEN

Unexpected donor-derived fungal infections represent a rare but potentially fatal complication in lung transplant (Tx) recipients. Timely communication of the results of donor cultures and prompt treatment of recipients are crucial to mitigate the consequences of donor-derived transmissions. In this prospective cohort study, all consecutive patients who underwent lung transplantation from 2015 to 2022 were included. In December 2015, a Local Active Surveillance System has been implemented to provide biovigilance of donor culture results and optimize recipients' management. The aim of this study is to investigate the incidence of unexpected, mold-positive cultures among lung donors and the rate of transmission to recipients. Furthermore, management strategies and outcome of recipients with mold transmission are described. In case of isolation of the same mold in donor and recipient cultures, when possible, transmission was confirmed by dendrogram analysis. During the study period, 82 lung Tx were performed from 80 donors. The prevalence of donors with "unexpected" mold isolation from the respiratory tract was 3.75% (3/80). Isolated molds were Aspergillus niger, Rhizopus oryzae, and Aspergillus flavus. Transmissions occurred in all the three cases (100%) with a mean time of 5 days from lung Tx but none of the recipients developed invasive mold disease. Our Local Active Surveillance System allowed prompt recognition of lung donors unexpected mold colonization. Even though transmission occurred, introduction of early targeted antifungal therapy prevented potential catastrophic consequence of mold donor-derived infection in the immediate post-Tx period.

7.
Transpl Infect Dis ; 26(2): e14238, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38265107

RESUMEN

BACKGROUND: Performance of active screening for multidrug-resistant Gram-negative bacteria (MDR-GNB) and administration of targeted antibiotic prophylaxis (TAP) in colonized patients undergoing liver (LT) and/or kidney transplantation (KT) are controversial issues. METHODS: Self-administered electronic cross-sectional survey disseminated from January to February 2022. Questionnaire consisted of four parts: hospital/transplant program characteristics, standard screening and antibiotic prophylaxis, clinical vignettes asking for TAP in patients undergoing LT and KT with prior infection/colonization with four different MDR-GNB (extended-spectrum cephalosporin-resistant Enterobacterales [ESCR-E], carbapenem-resistant Enterobacterales [CRE], multidrug-resistant Pseudomonas aeruginosa [MDR-Pa], and carbapenem-resistant Acinetobacter baumannii [CRAb]). RESULTS: Fifty-five respondents participated from 14 countries, mostly infectious disease specialists (69%) with active transplant programs (>100 procedures/year for 34.5% KT and 23.6% LT), and heterogeneous local MDR-GNB prevalence from <15% (30.9%), 15%-30% (43.6%) to >30% (16.4%). The frequency of screening for ESCR-E, CRE, MDR-Pa, and CRAb was 22%, 54%, 17%, and 24% for LT, respectively, and 18%, 36%, 16%, and 11% for KT. Screening time-points were mainly at transplantation 100%, only one-third following transplantation. Screening was always based on rectal swab cultures (100%); multi-site sampling was reported in 40% of KT and 35% of LT. In LT clinical cases, 84%, 58%, 84%, and 40% of respondents reported TAP for prior infection/colonization with ESCR-E, CRE, MDR-Pa, and CRAb, respectively. In KT clinical cases, 55%, 39%, 87%, and 42% of respondents reported TAP use for prior infection/colonization with ESCR-E, CRE, MDR-Pa, and CRAb, respectively. CONCLUSION: There is a large heterogeneity in screening and management of MDR-GNB carriage in LT and KT.


Asunto(s)
Infecciones por Bacterias Gramnegativas , Trasplante de Riñón , Humanos , Profilaxis Antibiótica , Infecciones por Bacterias Gramnegativas/diagnóstico , Infecciones por Bacterias Gramnegativas/tratamiento farmacológico , Infecciones por Bacterias Gramnegativas/prevención & control , Trasplante de Riñón/efectos adversos , Estudios Transversales , Bacterias Gramnegativas , Antibacterianos/uso terapéutico , Antibacterianos/farmacología , Farmacorresistencia Bacteriana Múltiple , Hígado , Carbapenémicos , Encuestas y Cuestionarios
8.
Curr Opin Organ Transplant ; 29(2): 131-137, 2024 04 01.
Artículo en Inglés | MEDLINE | ID: mdl-38288947

RESUMEN

PURPOSE OF REVIEW: Human cytomegalovirus (CMV) continues to be the most important infectious complication following solid organ transplantation (SOT). RECENT FINDINGS: Universal prophylaxis and preemptive therapy are the most adopted strategies for prevention of CMV disease globally. Prophylaxis with valganciclovir is the most widely used approach to CMV prevention, however leukopenia and late onset CMV disease after discontinuation of prophylaxis requires new strategies to prevent this complication. The use of assays detecting CMV-specific T cell-mediated immunity may individualize the duration of antiviral prophylaxis after transplantation. Letermovir has been recently approved for prophylaxis in kidney transplant recipients. CMV-RNAemia used together with CMV-DNAemia in the viral surveillance of CMV infection provides accurate information on viral load kinetics, mostly in patients receiving letermovir prophylaxis/therapy. The development of refractory and resistant CMV infection remains a major challenge and a new treatment with maribavir is currently available. In the present paper we will review the most recent advances in prevention and treatment of CMV diseases in SOT recipients. SUMMARY: Recent findings, summarized in the present paper, may be useful to optimize prevention and treatment of CMV infection in SOT.


Asunto(s)
Acetatos , Infecciones por Citomegalovirus , Trasplante de Órganos , Quinazolinas , Humanos , Antivirales/uso terapéutico , Infecciones por Citomegalovirus/diagnóstico , Infecciones por Citomegalovirus/tratamiento farmacológico , Infecciones por Citomegalovirus/prevención & control , Valganciclovir/uso terapéutico , Receptores de Trasplantes , Trasplante de Órganos/efectos adversos
9.
Curr Opin Infect Dis ; 36(2): 95-101, 2023 04 01.
Artículo en Inglés | MEDLINE | ID: mdl-36853755

RESUMEN

PURPOSE OF REVIEW: Recurrent cellulitis is a challenging clinical condition affecting up to 47% of patients after the first episode, especially those with predisposing risk factors. The purpose of this review is to describe the state of the art of literature evidence and to highlight recent developments in its management. RECENT FINDINGS: Recurrent cellulitis can occur after successful treatment of cellulitis. Conditions that commonly increase the risk of cellulitis include local and systemic modifiable and nonmodifiable factors. A rigorous approach to the management of risk factors and treatment of acute infection is important as the risk of recurrence rises with repeated episodes. Risk factors, if present, need to be targeted in association with antibiotic prophylaxis. Penicillin V is the preferred antibiotic for prevention but other antibiotics and new drugs can be considered in cases of ß-lactam allergy, intolerance, or failure. SUMMARY: Recurrent cellulitis is associated with short term and long-term morbidity as well as significant healthcare costs. Management of underlying predisposing conditions is crucial to prevent recurrence in addition with evaluation of pharmacological measures, but specialized and multidisciplinary skills are needed. More efforts are needed to prevent and treat this underestimated problem.


Asunto(s)
Antibacterianos , Celulitis (Flemón) , Humanos , Celulitis (Flemón)/tratamiento farmacológico , Celulitis (Flemón)/prevención & control , Antibacterianos/uso terapéutico , Profilaxis Antibiótica , Penicilina V/uso terapéutico , Prevención Secundaria , Enfermedad Crónica , Recurrencia
10.
Transpl Infect Dis ; 25(5): e14126, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37585372

RESUMEN

BACKGROUND: Since November 2020, Italy was the first country to carry out a protocol and use liver from COVID-19 donors. We aimed to evaluate the medium-term outcome of patients who underwent liver transplant (LT) with those grafts. METHODS: We consecutively enrolled 283 patients who underwent first LT from November 2020 to December 2022 in our Center (follow-up 468 days). Twenty-five of 283 (8.8%, study population) received a graft from donors with previous (4%) or active (96%) SARS-CoV-2 infection, and 258/283 (91.2%, control group) received a graft from COVID-19-negative donors. SARS-CoV-2-RNA was tested on graft tissue of COVID-19 donors and their recipients underwent weekly evaluation of SARS-CoV-2-RNA in nasal swabs for the first month after LT. RESULTS: One-year and 2-year patient survival was 88.5% and 88.5% in study group versus 94.5% and 93.5% in control group, respectively (p = .531). In study population there was no evidence of donor-recipient virus transmission, but three (12%) patients (vs. 7 [2.7%] of control group, p = .048) developed hepatic artery thrombosis (HAT): they were SARS-CoV-2-RNA negative at LT and 1/3 grafts tested SARS-CoV-2-RNA positive on liver tissue. COVID-19 donor was independently associated with HAT (odds ratio (OR) = 4.85, 95% confidence interval (CI) 1.10-19.15; p = .037). By comparing study population with control group, acute rejection and biliary complication rates were not significantly different (16% vs. 8.1%, p = .26; 16% vs. 16.3% p = .99, respectively). CONCLUSIONS: Our 1-year results of transplant strategy including liver grafts from COVID-19 donors were favorable. HAT was the only complication with significantly higher rate in patients transplanted with COVID-19 donors compared with control group.


Asunto(s)
COVID-19 , Humanos , Estudios de Seguimiento , SARS-CoV-2 , Hígado , Donantes de Tejidos , ARN , Supervivencia de Injerto
11.
Transpl Infect Dis ; 25(2): e14036, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36880576

RESUMEN

BACKGROUND: Management of infections due to carbapenemase-resistant Enterobacterales (CRE) in solid organ transplant (SOT) recipients remains a difficult challenge. The INCREMENT-SOT-CPE score has been specifically developed from SOT recipients to stratify mortality risk, but an external validation is lacking. METHODS: Multicenter retrospective cohort study of liver transplant (LT) recipients colonized with CRE infection who developed infection after transplant over 7-year period. Primary endpoint was all-cause 30-day mortality from infection onset. A comparison between INCREMENT-SOT-CPE and other selected scores was performed. A two-level mixed effects logistic regression model with random effects for the center was fitted. Performance characteristics at optimal cut-point were calculated. Multivariable Cox regression analysis of risk factors for all-cause 30-day mortality was carried out. RESULTS: Overall, 250 CRE carriers developed infection after LT and were analyzed. The median age was 55 years (interquartile range [IQR]: 46-62) and 157 were males (62.8%). All-cause 30-day mortality was 35.6%. A sequential organ failure assessment (SOFA) score ≥ 11 showed a sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of 69.7%, 76.4%, 62.0%, 82.0%, and 74.0%, respectively. An INCREMENT-SOT-CPE ≥ 11 reported a sensitivity, specificity, PPV, NPV, and accuracy of 73.0%, 62.1%, 51.6%, 80.6% and 66.0%, respectively. At multivariable analysis acute renal failure, prolonged mechanical ventilation, INCREMENT-SOT-CPE score ≥ 11 and SOFA score ≥ 11 were independently associated with all-cause 30-day mortality, while a tigecycline-based targeted regimen was found to be protective. CONCLUSIONS: Both INCREMENT-SOT-CPE ≥ 11 and SOFA ≥ 11 were identified as strong predictors of all-cause 30-day mortality in a large cohort of CRE carriers developing infection after LT.


Asunto(s)
Trasplante de Hígado , Trasplante de Órganos , Masculino , Humanos , Persona de Mediana Edad , Femenino , Trasplante de Órganos/efectos adversos , Trasplante de Hígado/efectos adversos , Carbapenémicos , Estudios Retrospectivos , Factores de Riesgo , Receptores de Trasplantes
12.
Curr Opin Organ Transplant ; 28(5): 384-390, 2023 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-37555801

RESUMEN

PURPOSE OF REVIEW: The potential for transmission of donor-derived infections (DDIs) is impossible to eliminate, but a thoughtful and systematic approach to donor evaluation can mitigate the risk. Prevention is a key issue and clinicians must maintain a high index of suspicion and remain vigilant in staying up to date on emerging infections. COVID-19 and Monkeypox have represented a new challenge for infectious disease screening and recommendations have been evolving, as knowledge in the field has grown. Additional considerations for pretransplant deceased donor screening include testing for neglected and endemic infectious diseases such as strongyloidiasis and HTLV 1/2. Molecular diagnostic tests have improved awareness on pathogenicity of mollicutes and fungi in the setting of DDIs. The aim of this review is to provide an update on the most recent literature on DDI with a special focus on these emerging hot topics. RECENT FINDINGS: Donor screening for uncommon pathogens must be guided by knowledge of changing epidemiology of infectious disease and availability of new diagnostic methods. SUMMARY: Appropriate screening, early recognition, timely reporting, close monitoring, and appropriate management are essential to help reducing the risk of emerging DDIs.


Asunto(s)
COVID-19 , Enfermedades Transmisibles , Trasplante de Órganos , Estrongiloidiasis , Humanos , Trasplante de Órganos/efectos adversos , COVID-19/diagnóstico , COVID-19/epidemiología , Donantes de Tejidos , Receptores de Trasplantes
13.
Immunology ; 167(4): 508-527, 2022 12.
Artículo en Inglés | MEDLINE | ID: mdl-35897164

RESUMEN

Dopamine (DA) affects immune functions in healthy subjects (HS) and during disease by acting on D1-like (D1 and D5) and D2-like (D2, D3 and D4) dopaminergic receptors (DR); however, its effects on human polymorphonuclear leukocytes (PMN) are still poorly defined. We investigated DR expression in human PMN and the ability of DA to affect cell migration and reactive oxygen species (ROS) production. Experiments were performed on cells from HS and from patients (Pts) with bacterial infections as well, during the acute phase and after recovery. Some experiments were also performed in mice knockout (KO) for the DRD5 gene. PMN from HS express both D1-like and D2-like DR, and exposure to DA results in inhibition of activation-induced morphological changes, migration and ROS production which depend on the activation of D1-like DR. In agreement with these findings, DA inhibited migration of PMN obtained from wild-type mice, but not from DRD5KO mice. In Pts with bacterial infections, during the febrile phase D1-like DRD5 on PMN were downregulated and DA failed to affect PMN migration. Both D1-like DRD5 expression and DA-induced inhibition of PMN migration were however restored after recovery. Dopaminergic inhibition of human PMN is a novel mechanism which is likely to play a key role in the regulation of innate immunity. Evidence obtained in Pts with bacterial infections provides novel clues for the therapeutic modulation of PMN during infectious disease.


Asunto(s)
Infecciones Bacterianas , Dopamina , Humanos , Animales , Ratones , Neutrófilos , Especies Reactivas de Oxígeno , Receptores Dopaminérgicos , Receptores de Dopamina D5/genética
14.
J Hepatol ; 77(4): 1198-1204, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-35798131

RESUMEN

The COVID-19 pandemic has significantly changed organ donation and transplantation worldwide. Since the beginning of the pandemic, the uncertainty regarding the potential route of transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has created tremendous pressures on transplantation communities, and international organisations have advised against using organs from deceased donors who have tested positive for SARS-CoV-2. The possibility of SARS-CoV-2 transmission through organ donation has only been reported for lung transplantation; hence, based on current experience, transplantation of non-lung organs from donors with active SARS-CoV-2 infection has been considered possible and safe, at least over short-term follow-up. As the evolving outbreak of SARS-CoV-2 continues, alongside the presence of vaccines and new treatment options, clinicians should consider transplanting organs from deceased donors with active SARS-CoV-2 infection to recipients with limited opportunities for transplantation and those with specific natural or vaccine-induced immunity. This article proffers an expert opinion on the use of organs from deceased donors with resolved or active SARS-CoV-2 infection in the absence of more definitive data and standardised acceptance patterns.


Asunto(s)
COVID-19 , Trasplante de Órganos , Obtención de Tejidos y Órganos , COVID-19/epidemiología , Humanos , Trasplante de Órganos/efectos adversos , Pandemias/prevención & control , SARS-CoV-2 , Donantes de Tejidos
15.
Curr Opin Infect Dis ; 35(6): 545-551, 2022 12 01.
Artículo en Inglés | MEDLINE | ID: mdl-36345852

RESUMEN

PURPOSE OF REVIEW: Nosocomial infections caused by Acinetobacter baumannii currently represent a serious challenge for clinicians because treatment options are limited and frequently associated with significant toxicity. Cefiderocol is a first-in-class siderophore cephalosporin that has a proven efficacy for the treatment of multidrug-resistant Gram-negative infections, including carbapenem-resistant A. baumannii. The aim of this review is to evaluate the current evidence for the role of cefiderocol in the management of A. baumannii infections. RECENT FINDINGS: In this review, we briefly summarize the available data on the efficacy (from randomized controlled trials) and on effectiveness and cure rates (from observational studies), pertaining to the use of cefiderocol for treatment of serious A. baumannii infections. SUMMARY: Cefiderocol represents a promising and safe antibiotic option for treating patients with carbapenem-resistant A. baumannii infections. Due to conflicting mortality data from available experience, well-designed future randomized controlled trials and real-life studies are needed.


Asunto(s)
Acinetobacter baumannii , Humanos , Farmacorresistencia Bacteriana Múltiple , Cefalosporinas/uso terapéutico , Carbapenémicos/farmacología , Carbapenémicos/uso terapéutico , Antibacterianos/uso terapéutico , Antibacterianos/farmacología , Pruebas de Sensibilidad Microbiana , Cefiderocol
16.
Virol J ; 19(1): 4, 2022 01 06.
Artículo en Inglés | MEDLINE | ID: mdl-34991646

RESUMEN

INTRODUCTION: Transplantation among HIV positive patients may be a valuable therapeutic intervention. This study involves an HIV D+/R+ kidney-liver transplantation, where PBMC-associated HIV quasispecies were analyzed in donor and transplant recipients (TR) prior to transplantation and thereafter, together with standard viral monitoring. METHODS: The donor was a 54 year of age HIV infected woman: kidney and liver recipients were two HIV infected men, aged 49 and 61. HIV quasispecies in PBMC was analyzed by ultra-deep sequencing of V3 env region. During TR follow-up, plasma HIV-1 RNA, HIV-1 DNA in PBMC, analysis of proviral integration sites and drug-resistance genotyping were performed. Other virological and immunological monitoring included CMV and EBV DNA quantification in blood and CD4 T cell counts. RESULTS: Donor and TR were all ART-HIV suppressed at transplantation. Thereafter, TR maintained a nearly suppressed HIV-1 viremia, but HIV-1 RNA blips and the increase of proviral integration sites in PBMC attested some residual HIV replication. A transient peak in HIV-1 DNA occurred in the liver recipient. No major changes of drug-resistance genotype were detected after transplantation. CMV and EBV transient reactivations were observed only in the kidney recipient, but did not require specific treatment. CD4 counts remained stable. No intermixed quasispecies between donor and TR was observed at transplantation or thereafter. Despite signs of viral evolution in TR, HIV genetic heterogeneity did not increase over the course of the months of follow up. CONCLUSIONS: No evidence of HIV superinfection was observed in the donor nor in the recipients. The immunosuppressive treatment administrated to TR did not result in clinical relevant viral reactivations.


Asunto(s)
Infecciones por VIH , Trasplante de Hígado , Humanos , Riñón , Leucocitos Mononucleares , Hígado , Cuasiespecies
17.
Transpl Int ; 35: 10302, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35418803

RESUMEN

This article gives a personal, historical, account of the impact of the COVID-19 pandemic on transplantation services. The content is based on discussions held at two webinars in November 2020, at which kidney transplantation experts from prestigious institutions in Europe and the United States reflected on how the pandemic affected working practices. The group discussed adaptations to clinical care (i.e., ceasing, maintaining and re-starting kidney transplantations, and cytomegalovirus infection management) across the early course of the pandemic. Discussants were re-contacted in October 2021 and asked to comment on how transplantation services had evolved, given the widespread access to COVID-19 testing and the roll-out of vaccination and booster programs. By October 2021, near-normal life and service delivery was resuming, despite substantial ongoing cases of COVID-19 infection. However, transplant recipients remained at heightened risk of COVID-19 infection despite vaccination, given their limited response to mRNA vaccines and booster dosing: further risk-reduction strategies required exploration. This article provides a contemporaneous account of these different phases of the pandemic from the transplant clinician's perspective, and provides constructive suggestions for clinical practice and research.


Asunto(s)
COVID-19 , Trasplante de Riñón , COVID-19/epidemiología , Prueba de COVID-19 , Humanos , Pandemias , SARS-CoV-2 , Estados Unidos/epidemiología
18.
Transpl Int ; 35: 10332, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35812158

RESUMEN

Infections are leading causes of morbidity/mortality following solid organ transplantation (SOT) and cytomegalovirus (CMV) is among the most frequent pathogens, causing a considerable threat to SOT recipients. A survey was conducted 19 July-31 October 2019 to capture clinical practices about CMV in SOT recipients (e.g., how practices aligned with guidelines, how adequately treatments met patients' needs, and respondents' expectations for future developments). Transplant professionals completed a ∼30-minute online questionnaire: 224 responses were included, representing 160 hospitals and 197 SOT programs (41 countries; 167[83%] European programs). Findings revealed a heterogenous approach to CMV diagnosis and management and, sometimes, significant divergence from international guidelines. Valganciclovir prophylaxis (of variable duration) was administered by 201/224 (90%) respondents in D+/R- SOT and by 40% in R+ cases, with pre-emptive strategies generally reserved for R+ cases: DNA thresholds to initiate treatment ranged across 10-10,000 copies/ml. Ganciclovir-resistant CMV strains were still perceived as major challenges, and tailored treatment was one of the most important unmet needs for CMV management. These findings may help to design studies to evaluate safety and efficacy of new strategies to prevent CMV disease in SOT recipients, and target specific educational activities to harmonize CMV management in this challenging population.


Asunto(s)
COVID-19 , Infecciones por Citomegalovirus , Trasplante de Órganos , Antivirales/uso terapéutico , Citomegalovirus , Infecciones por Citomegalovirus/diagnóstico , Infecciones por Citomegalovirus/tratamiento farmacológico , Infecciones por Citomegalovirus/prevención & control , Ganciclovir/uso terapéutico , Humanos , Trasplante de Órganos/efectos adversos , Encuestas y Cuestionarios , Receptores de Trasplantes
19.
Transpl Infect Dis ; 24(5): e13895, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-35781915

RESUMEN

BACKGROUND: Solid organ transplant (SOT) recipients can benefit from traditional antimicrobial stewardship (AMS) activities directed to improve judicious perioperative prescribing and management, but evidence is lacking. The aim of this expert opinion review is to provide an update on the current landscape of application of AMS practices for optimization of perioperative prophylaxis (PP). METHODS: We reviewed the available literature on early postoperative infectious complications in SOT and PP management, on modified perioperative approaches in case of infection or colonization in recipients and donors and on AMS in transplantation PP. RESULTS: SOT recipients are at high risk for early postoperative infectious complications due to the complexity of surgical procedures, severity of end stage organ disease, net state of immunosuppression in the posttransplant period and to the high risk for multidrug resistant organism. Moreover, SOT may be exposed to preservation fluid infections and expected or unexpected donor-derived infections. We summarize main factors to take into account when prescribing transplant PP. CONCLUSION: Creating personalized PP to avoid unwanted consequences of antimicrobials while improving outcomes is an emerging and critical aspect in SOT setting. Further studies are needed to offer best PP tailored to SOT type and to evaluate interventions efficacy and safety.


Asunto(s)
Programas de Optimización del Uso de los Antimicrobianos , Enfermedades Transmisibles , Trasplante de Órganos , Trasplantes , Programas de Optimización del Uso de los Antimicrobianos/métodos , Humanos , Trasplante de Órganos/efectos adversos , Trasplante de Órganos/métodos , Donantes de Tejidos , Receptores de Trasplantes
20.
Transpl Infect Dis ; 24(4): e13846, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35579913

RESUMEN

The debate on the opportunity to use organs from donors testing positive for Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) in recipients with naïve resolved or active COVID-19 is ongoing. We aim to present the ethical analyses underlying the decision to perform liver transplantation (LT) in selected patients with resolved or active COVID-19 in Italy. We used Jonsen, Siegler, and Winslade's Four-Boxes casuistic method, addressing the four topics considered as constitutive of the essential structure of single clinical cases for their ethical analysis (medical indications, patient preferences, quality of life, and contextual features) to enable decision-making on a case-by-case basis. Based on these topics, we elucidate the meaning and balance among the principles of biomedical ethics. Clinical ethics judgment based on the relation between the risk of acquiring SARS-CoV-2 along with its potentially negative effects and the expected benefits of transplant lead to consider LT as clinically appropriate. Shared decision-making allows the integration of clinical options with the patient's subjective preferences and considerations, enabling a valid informed consent specifically tailored to the patients' individual circumstances. The inclusion of carefully selected SARS-CoV-2 positive donors represents an opportunity to offer lifesaving LT to patients who might otherwise have limited opportunities to receive one. COVID-19 positive donor livers are fairly allocated among equals, and respect for fundamental rights of the individual and the broader community in a context of healthcare rationing is guaranteed.The ethical analysis of the decision to perform LT in selected patients shows that the decision is ethically justifiable.


Asunto(s)
COVID-19 , Trasplante de Hígado , Humanos , Calidad de Vida , SARS-CoV-2 , Donantes de Tejidos
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