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1.
Emerg Med J ; 39(4): 295-300, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34099458

RESUMO

BACKGROUND: E-scooters have emerged as a frequently used vehicle in German cities due to their high availability and easy access. However, investigations about the causes and mechanisms of E-scooter incidents and their trauma-specific consequences are rare. METHODS: We analysed all patients involved in E-scooter incidents from June to December 2019 who presented to four inner-city EDs in Berlin. The prospective data included patient-related and incident-related data, information on injury patterns and therapy, responses in a voluntary questionnaire concerning E-scooter use and general traffic experience. RESULTS: 248 patients (129 males; median age 29 years (5-81)) were included: 41% were tourists and 4% were children. Most incidents (71%) occurred between July and September 2019, the majority occurring at weekends (58%). The injury pattern was mostly multifocal, affecting the lower (42%) and upper limbs (37%) and the head (40%). Traumatic brain injury was associated with alcohol consumption. Inpatient admission was recorded in 25%, surgery in 23%. CONCLUSION: This study has defined the incidence of injury related to E-scooter use in a major European city. Stricter laws governing the use of E-scooters, the wearing of helmets and technical modifications to the E-scooter platforms might decrease E-scooter-associated incidents and resulting injuries in the future. TRIAL REGISTRATION NUMBER: German Clinical Trials Registry (DRKS00018061).


Assuntos
Acidentes de Trânsito , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Berlim/epidemiologia , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Estudos Retrospectivos , Fatores de Risco , Adulto Jovem
2.
PLoS One ; 16(2): e0246956, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33592046

RESUMO

BACKGROUND: The COVID-19 pandemic led to the implementation of drastic shutdown measures worldwide. While quarantine, self-isolation and shutdown laws helped to effectively contain and control the spread of SARS-CoV-2, the impact of COVID-19 shutdowns on trauma care in emergency departments (EDs) remains elusive. METHODS: All ED patient records from the 35-day COVID-19 shutdown (SHUTDOWN) period were retrospectively compared to a calendar-matched control period in 2019 (CTRL) as well as to a pre (PRE)- and post (POST)-shutdown period in an academic Level I Trauma Center in Berlin, Germany. Total patient and orthopedic trauma cases and contacts as well as trauma causes and injury patterns were evaluated during respective periods regarding absolute numbers, incidence rate ratios (IRRs) and risk ratios (RRs). FINDINGS: Daily total patient cases (SHUTDOWN vs. CTRL, 106.94 vs. 167.54) and orthopedic trauma cases (SHUTDOWN vs. CTRL, 30.91 vs. 52.06) decreased during the SHUTDOWN compared to the CTRL period with IRRs of 0.64 and 0.59. While absolute numbers decreased for most trauma causes during the SHUTDOWN period, we observed increased incidence proportions of household injuries and bicycle accidents with RRs of 1.31 and 1.68 respectively. An RR of 2.41 was observed for injuries due to domestic violence. We further recorded increased incidence proportions of acute and regular substance abuse during the SHUTDOWN period with RRs of 1.63 and 3.22, respectively. CONCLUSIONS: While we observed a relevant decrease in total patient cases, relative proportions of specific trauma causes and injury patterns increased during the COVID-19 shutdown in Berlin, Germany. As government programs offered prompt financial aid during the pandemic to individuals and businesses, additional social support may be considered for vulnerable domestic environments.


Assuntos
COVID-19/epidemiologia , Fraturas Ósseas/epidemiologia , Quarentena/estatística & dados numéricos , Centros de Traumatologia/estatística & dados numéricos , COVID-19/prevenção & controle , Fraturas Ósseas/classificação , Fraturas Ósseas/etiologia , Alemanha , Hospitais Universitários/estatística & dados numéricos , Humanos
3.
Nutrition ; 79-80: 110855, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32563769

RESUMO

OBJECTIVE: Chronic intestinal failure (cIF) is a rare medical condition usually treated by long-term parenteral nutrition (PN). Owing to disease-associated symptoms and treatment-specific complications, patients with cIF commonly present with reduced quality of life (QoL) compared with healthy controls. The aim of this study was to identify factors associated with QoL in patients with cIF. METHODS: Ninety adult patients with cIF receiving PN were included in an observational study between 2014 and 2017. QoL based on the novel Short Bowel Syndrome-Quality of Life (SBS-QoL) scale and the Short-Form 36 (SF-36) health survey and nutritional status, liver function, and standard blood chemistry were assessed in every study patient. Univariate and multivariable regressions were conducted to determine independent predictors of QoL. RESULTS: Oral food intake and plasma citrulline were the two independent variables associated with the SBS-QoL subscale 1 (R2 = 0.240) and subscale 2 (R2 = 0.235). Oral intake (ß = -43.909, P = 0.015) and citrulline (ß = -0.952, P = 0.003) were also significantly associated with the SBS-QoL sum scale (R2 = 0.209). The results of SF-36 health survey were significantly associated with both SBS-QoL subscale 1 (P <0.001) and subscale 2 (P <0.001) and the SBS-QoL sum scale (P <0.001). CONCLUSIONS: Citrulline and oral intake are predictors of QoL in patients with cIF. Although citrulline appears to be good screening tool, oral food ingestion should be considered as key goal in patients with cIF.


Assuntos
Enteropatias , Síndrome do Intestino Curto , Adulto , Citrulina , Humanos , Intestinos , Qualidade de Vida , Síndrome do Intestino Curto/terapia
4.
Pediatr Transplant ; 24(3): e13697, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-32212293

RESUMO

BACKGROUND: Post-transplant malignancies, that is, lymphomas, are a recognized complication in intestinal transplant recipients but are mostly secondary to EBV infection. There is an increased risk for malignancies in unusual sites in intestinal transplant recipients as compared to other solid organ transplants and the general population. OBJECTIVE: To evaluate the incidence, course, and outcome of unusual malignancies in children after ITx. METHODS: Retrospective analysis of children who underwent ITx for primary digestive disorders at Birmingham Children's Hospital between January 1989 and December 2017. RESULTS: Ninety-eight intestinal transplants were performed in 90 children (49 males and 41 females) with an underlying primary digestive disorder. Median age was 2.7 years (0.6-16.2), and median weight was 14.5 kg (5.7-53.2) at the time of transplant. Within this cohort, we identified four cases of unusual malignancies at rare sites of presentation. One patient developed cerebral PTLD, two patients were diagnosed with SMT, located at the stomal orifice and in cervicothoracic paravertebral area, respectively, and the last patient developed a retroperitoneal angiosarcoma. Unfortunately, the overall patient outcome was poor in all but one child with SMT, who currently survives with cytotoxic T-cell therapy. CONCLUSION: Unusual malignancies can occur in approximately 5% of children following ITx. A high index of suspicion is required for a timely diagnosis and adequate treatment.


Assuntos
Intestinos/transplante , Neoplasias/etiologia , Complicações Pós-Operatórias , Adolescente , Criança , Pré-Escolar , Feminino , Seguimentos , Humanos , Incidência , Lactente , Masculino , Neoplasias/diagnóstico , Neoplasias/epidemiologia , Neoplasias/terapia , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/terapia , Estudos Retrospectivos , Resultado do Tratamento , Reino Unido
5.
JPEN J Parenter Enteral Nutr ; 44(2): 291-300, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-30864177

RESUMO

BACKGROUND: Parenteral nutrition (PN) is a life-sustaining therapy for patients with chronic intestinal failure (IF) but inevitably has an impact on patients' quality of life (QoL). The purpose of this study was to examine multiple aspects of QoL by utilizing the standardized Short Form 36 (SF-36) health survey. METHODS: Between 2014 and 2017, a total of 90 adult patients with IF who were receiving PN were prospectively enrolled in an observational study. All subjects underwent nutrition status assessment, liver assessment, blood tests, and QoL assessment based on the SF-36. Univariate and multivariable analyses were performed to identify determinants of 8 domains and 2 summary scales of the SF-36. RESULTS: Analysis of the SF-36 questionnaire data showed that QoL was significantly worse compared with the general German population across all categories. Multivariable analysis revealed that bioelectrical impedance analysis of phase angle (1/10 categories), stoma/fistula (4/10 categories), oral intake (4/10 categories), infusions per week (1/10 categories), duration of PN (1/10 categories), citrulline (4/10 categories), and hemoglobin levels (1/10 categories) are independent risk factors affecting QoL. CONCLUSION: This study uses the largest cohort of IF patients assessed by the standardized SF-36 questionnaire to comprehensively analyze QoL. Presence of oral intake, presence of ostomy, and citrulline levels were independently correlated with 4 of 10 categories of the SF-36. These results indicate that to improve QoL for IF patients, clinical care should focus on addressing the social and emotional value of oral intake, educational interventions, early stoma closure, and application of new targeted therapies.


Assuntos
Enteropatias , Nutrição Parenteral , Qualidade de Vida , Adulto , Estudos de Coortes , Humanos , Enteropatias/terapia , Estudos Prospectivos , Inquéritos e Questionários
6.
Clin Nutr ; 39(2): 540-547, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-30885502

RESUMO

BACKGROUND & AIMS: Intestinal failure associated liver disease (IFALD) is one of the leading complications and causes of deaths in adult patients receiving home parenteral nutrition for chronic intestinal failure (CIF). Early diagnosis of IFALD is key to alleviate the progression of hepatic dysfunction. The aim of this study was to evaluate the capability of noninvasive liver function tests. METHODS: 90 adult patients with CIF receiving long-term home parenteral nutrition were included in a prospective cross-sectional study at our department between 2014 and 2017. All participants underwent dynamic liver function assessment (maximum liver function capacity [LiMAx] test, indocyanine green [ICG] test), transient elastography (FibroScan), blood tests and comprehensive nutritional status assessment. Univariate and multivariable analysis were performed to identify predictors of liver function. RESULTS: LiMAx, ICG test, and FibroScan highly correlated with standard liver function tests. Multivariable analysis identified intact ileum (B = 520.895; p = 0.010), digestive anatomy type 3 (B = 75.612; p = 0.025), citrulline level (B = 3.428; p = 0.040), parenteral olive oil intake (B = -0.570; p = 0.043), and oral intake (B = 182.227; p = 0.040) as independent risk factors affecting liver function determined by LiMAx test. ICG test and FibroScan showed no correlation with gastrointestinal and nutrition-related parameters. CONCLUSION: The LiMAx test is significantly associated with widely accepted risk factors for IFALD by multivariable analysis, whereas ICG test and FibroScan failed to show significant correlations. Liver function assessment by LiMAx test may therefore have the potential to detect alterations in liver function and identify patients at risk for the development of IFALD. Longitudinal studies are needed to investigate the impact of liver function determined by LiMAx test on long-term outcome in patients with CIF.


Assuntos
Enteropatias/complicações , Hepatopatias/diagnóstico , Hepatopatias/etiologia , Nutrição Parenteral no Domicílio/efeitos adversos , Estudos Transversais , Feminino , Alemanha , Humanos , Testes de Função Hepática/métodos , Testes de Função Hepática/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Nutrição Parenteral no Domicílio/métodos , Estudos Prospectivos
7.
Front Immunol ; 10: 866, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31134051

RESUMO

The intestine mediates a delicate balance between tolerogenic and inflammatory immune responses. The continuous pathogen encounter might also augment immune cell responses contributing to complications observed upon intestinal transplantation (ITx). We thus hypothesized that ITx patients show persistent signs of immune cell activation affecting both the adaptive and innate immune cell compartment. Information on the impact of intestinal grafts on immune cell composition, however, especially in the long-term is sparse. We here assessed activated and differentiated adaptive and innate immune subsets according to time, previous experience of cellular or antibody-mediated rejections or type of transplant after ITx applying multi-parametric flow cytometry, gene expression, serum cytokine and chemokine profiling. ITx patients showed an increase in CD16 expressing monocytes and myeloid dendritic cells (DCs) compared to healthy controls. This was even detectable in patients who were transplanted more than 10 years ago. Also, conventional CD4+ and CD8+ T cells showed persistent signs of activation counterbalanced by increased activated CCR4+ regulatory T cells. Patients with previous cellular rejections had even higher proportions of CD16+ monocytes and DCs, whereas transplanting higher donor mass with multi-visceral grafts was associated with increased T cell activation. The persistent inflammation and innate immune cell activation might contribute to unsatisfactory results after ITx.


Assuntos
Rejeição de Enxerto/imunologia , Imunidade Celular/imunologia , Intestinos/imunologia , Células Mieloides/imunologia , Receptores de IgG/imunologia , Linfócitos T/imunologia , Imunidade Adaptativa/imunologia , Adulto , Linfócitos T CD4-Positivos/imunologia , Linfócitos T CD4-Positivos/metabolismo , Linfócitos T CD8-Positivos/imunologia , Linfócitos T CD8-Positivos/metabolismo , Citocinas/sangue , Citocinas/imunologia , Citocinas/metabolismo , Células Dendríticas/imunologia , Células Dendríticas/metabolismo , Humanos , Imunidade Inata/imunologia , Intestinos/transplante , Ativação Linfocitária/imunologia , Pessoa de Meia-Idade , Monócitos/imunologia , Monócitos/metabolismo , Células Mieloides/metabolismo , Receptores de IgG/metabolismo , Linfócitos T/metabolismo , Linfócitos T Reguladores/imunologia , Linfócitos T Reguladores/metabolismo , Fatores de Tempo
9.
Transplantation ; 102(12): 2038-2055, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-29757901

RESUMO

BACKGROUND: Strategies for successful transplantation are much needed in the era of organ shortage, and there has been a resurgence of interest on the impact of revascularization time (RT) on outcomes in liver transplantation (LT). METHODS: All primary LT performed in Birmingham between 2009 and 2014 (n = 678) with portal reperfusion first were stratified according to RT (<44 minutes vs ≥44 minutes) and graft quality (standard liver graft [SLG], Donor Risk Index < 2.3 vs marginal liver graft [MLG], Donor Risk Index ≥ 2.3). RESULTS: Revascularization time of 44 minutes or longer resulted in significantly greater incidence of early allograft dysfunction (EAD) (29% vs 47%, P < 0.001), posttransplant acute kidney injury (AKI) (39% vs 60%, P < 0.001), and new-onset AKI (37% vs 56%, P < 0.001), along with poor long-term outcome (3-year graft survival 92% vs 83%, P = 0.001; 3-year patient survival 87% vs 79%, P = 0.004). On multivariable analysis, RT ≥ 44 was a significant independent predictor of EAD, renal dysfunction, and overall graft survival, but not patient survival. The cumulative effect of prolonged revascularization in marginal grafts (MLG) resulted in the worst transplant outcome compared with all other groups, which could be mitigated by rapid revascularization (SLG, SLG, MLG vs MLG; EAD 24%, 39%, 39% vs 69%; AKI 32%, 46%, 51% vs 70%; 3-year graft survival 94%, 87%, 88% vs 70%, respectively; each P < 0.001). Factors associated with lack of abdominal space, larger grafts, and surgical skills were predictive of RT ≥ 44. CONCLUSIONS: Shorter graft revascularization is a protective factor in LT, particularly in the setting of graft marginality. Careful graft-recipient matching and emphasis on surgical expertise may aid in achieving better outcomes in LT.


Assuntos
Transplante de Fígado/métodos , Duração da Cirurgia , Procedimentos Cirúrgicos Vasculares/métodos , Injúria Renal Aguda/etiologia , Adulto , Bases de Dados Factuais , Inglaterra , Feminino , Sobrevivência de Enxerto , Humanos , Transplante de Fígado/efeitos adversos , Transplante de Fígado/mortalidade , Masculino , Pessoa de Meia-Idade , Disfunção Primária do Enxerto/etiologia , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Procedimentos Cirúrgicos Vasculares/efeitos adversos , Procedimentos Cirúrgicos Vasculares/mortalidade
10.
Transplantation ; 102(8): 1307-1315, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29470351

RESUMO

BACKGROUND: Causes of severe cholestasis after liver transplantation (LT) are multi-factorial. Although the etiology is predictable in some, others culminate in graft/patient loss without a definitive cause identified. Severe cholestasis is usually associated with overlapped histological findings of rejection and biliary features, and diagnostic interpretation may pose a challenge. METHODS: This is 10-year retrospective analysis of patients with unexplained severe cholestasis resulting in death/graft loss within 90 days of LT. Of 1 583 LT during the study period, 90-day graft failure occurred in 129 (8%) cases; a total of 45 (3%) patients had unresolving severe cholestasis (bilirubin, >100 µmol/L; alkaline phosphatase, >400 UI/L after 15 days from LT), excluding those due to primary nonfunction/sepsis/vascular causes (n = 84). Demographics, allograft biopsies, radiological investigations, and clinical outcome were analyzed. RESULTS: All patients had persistent abnormal liver biochemistry. Doppler ultrasound scan was normal in all cases. Thirty-five (78%) recipients had at least 1 allograft biopsy (2 [1-9]). On the first biopsy, 22 (63%) patients had acute rejection, 4 (18%) early-chronic rejection, 12 (34%) antibody-mediated rejection. In subsequent biopsies chronic rejection was evident in 5 (14%) cases. Donor-specific antibodies were detected in all patients tested. Biliary anatomy was studied in detail in 9 (20%) patients, all presenting biliary strictures. The majority (n = 39; 87%) died within 32 (10-91) days, only survivors were from retransplantation (n = 3;6.5%) and biliary intervention (n = 3;6.5%). CONCLUSIONS: Unresolving severe cholestasis after LT is a key parameter predicting patient/allograft outcome. Histologically, rejection seems to overlap with biliary strictures; hence, allograft biopsy with signs of rejection should not be a reason to overlook biliary problems, in particular when biliary features are present. Only extensive radiological investigation/intervention or retransplantation prevents patient/allograft loss.


Assuntos
Colestase/complicações , Colestase/etiologia , Transplante de Fígado/efeitos adversos , Fígado/patologia , Adolescente , Adulto , Idoso , Biópsia , Feminino , Seguimentos , Rejeição de Enxerto/imunologia , Sobrevivência de Enxerto , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Período Pós-Operatório , Modelos de Riscos Proporcionais , Estudos Prospectivos , Estudos Retrospectivos , Risco , Fatores de Tempo , Resultado do Tratamento , Ultrassonografia Doppler , Reino Unido , Adulto Jovem
11.
Clin Transplant ; 30(7): 760-6, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-27140671

RESUMO

The follow-up after intestinal transplantation (ITX) is complex and limited to specialized centers. ITX recipients often travel all over the country to be seen in the outpatient clinic of specialized centers which is costly and time-consuming. Videoconferences through Skype have been implemented to eliminate travel time, costs, and to improve patient compliance without jeopardizing safety. Eighteen of 19 patients followed up after ITX or modified multivisceral transplantation (MMVTX) in conventional outpatient clinics in Oxford agreed to attend additional Skype clinics. All patients who were followed up through Skype clinics after ITX/MMVTX received a questionnaire to measure their satisfaction with methods and technical aspects of videoconferencing as well as time/mode of traveling, travel expenses/costs, waiting time in outpatient clinic and patients' satisfaction. Mean travel distance to Oxford was 236 ± 168 miles, mean travel time was 277 ± 175 min, and mean travel cost was 200 ± 56 Great Britain Pounds. A total of 56% had to take time off work and/or find child/family care for the time spent in travel. These patients reported a satisfaction score of 4.38 ± 0.77 of 5 points as opposed to 2.88 ± 0.90 for attending the conventional outpatient clinic. Skype clinics have been proven successful and feasible in highly specialized fields like ITX in eligible patients.


Assuntos
Intestinos/transplante , Cuidados Pós-Operatórios/métodos , Consulta Remota/métodos , Viagem , Comunicação por Videoconferência/organização & administração , Adulto , Feminino , Seguimentos , Humanos , Masculino , Transplante de Órgãos , Satisfação do Paciente , Inquéritos e Questionários , Reino Unido
12.
JAMA Surg ; 149(10): 1060-6, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25162284

RESUMO

IMPORTANCE: Because of the severity of disease and additional surgery, Crohn disease (CD) may result in intestinal failure (IF) and dependency on home parenteral nutrition (HPN). Defining the indication and timing for intestinal transplantation (ITx) is challenging. OBJECTIVES: To determine the limitations of conventional surgery and to facilitate the decision making for transplantation. DESIGN, SETTING, AND PARTICIPANTS: Data were collected prospectively and obtained by retrospective review of medical records from all patients with CD who were assessed for ITx in Oxford, United Kingdom, and Berlin, Germany, from October 10, 2003, through July 31, 2013. Patients were considered suitable for ITx if a diagnosis of irreversible IF was established and life-threatening complications under HPN were unresolvable. Twenty patients with CD and IF, established on HPN, were evaluated for ITx. The mean (SD) age at CD onset was 17.8 (9.8) years. On first diagnosis, most patients had a stricturing CD. By the time of referral, most had a combination of stricturing and fistulizing disease. INTERVENTIONS: New scoring system: a modification of the American Gastroenterology Association guidelines for ITx. Modifications are related to CD-specific issues that potentially lead to a poorer outcome and are based on the findings of the study to determine the expected benefit from ITx. MAIN OUTCOMES AND MEASURES: A scoring system that would alert the physician to the severity of the patient's CD and trigger early referral for ITx. This system may translate into better long-term outcomes for patients with CD. In addition, the Karnofsky performance status score was used to compare pretransplantation and posttransplantation outcomes. RESULTS: Ten patients underwent ITx, 4 were on the waiting list, and 4 were unavailable for follow-up. One patient was taken off the waiting list because of severe deterioration. One patient underwent conventional stricturoplasty and did not need transplantation. Among the transplant recipients, 17 (85%) had a stoma or enterocutaneous fistula, and the mean (SD) residual bowel length was 71.5 (38) cm. A total of 80% of transplant recipients had life-threatening catheter infections, and 13 (65%) had a significant decrease in the estimated glomerular filtration rate. At a mean (SD) follow-up of 27.6 (36.1) months for transplant recipients, the patient and graft survival is 80%, and their Karnofsky performance status score increased by a mean of 18.6%. CONCLUSIONS AND RELEVANCE: Intestinal transplantation is a suitable treatment option for patients with CD and IF. It should be considered before any additional attempts at conventional surgery, which may cause eligible patients to miss this opportunity through perioperative complications. The suggested scoring system enables the physician to identify patients who may benefit from transplantation before HPN-associated secondary organ failure.


Assuntos
Doença de Crohn/complicações , Doença de Crohn/cirurgia , Intestinos/transplante , Adolescente , Inglaterra , Feminino , Alemanha , Humanos , Imunossupressores/uso terapêutico , Masculino , Encaminhamento e Consulta , Estudos Retrospectivos , Índice de Gravidade de Doença , Taxa de Sobrevida , Resultado do Tratamento
13.
Transplantation ; 97(7): 732-9, 2014 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-24598936

RESUMO

BACKGROUND: Tumor necrosis factor (TNF)-α inhibition was shown to reduce ischemia/reperfusion injury (IRI) after intestinal transplantation (ITX). We studied the effects of different TNFα inhibitors on acute IRI and long-term inflammatory responses in experimental ITX. METHODS: Orthotopic ITX was performed in an isogenic ischemia/reperfusion model in Lewis rats. The TNFα inhibition groups received infliximab post-reperfusion; etanercept pre-reperfusion and at postoperative days (POD) 1, 3, 5, and 7; or pentoxifylline pre-reperfusion and at POD 1 to 5. Tissue samples were taken from proximal and distal graft sections and mesenteric lymph nodes at 20 min, 12 hr, 7 day, and 6 months post-reperfusion for histopathology, immunohistology, terminal deoxyribosyl transferase-mediated dUTP nick-end labeling (TUNEL) assay, and real-time RT-PCR. Lung sections were stained for the myeloperoxidase assay. RESULTS: TNFα inhibitors decreased inflammatory changes after IRI in all treatment groups. Infliximab significantly improved 7-day survival and reduced the histological and immunohistochemical signs of IRI, the numbers of graft-infiltrating T cells and ED1 monocytes and macrophages, and pulmonary neutrophil infiltration, and also enhanced the accumulation of cytoprotective markers. Graft injury was more prominent in the distal graft than in the proximal graft in all groups, regardless of TNFα inhibition. CONCLUSION: Infliximab significantly reduced both acute IRI and, as with other TNFα inhibitors, long-term inflammatory responses after rat ITX. TNFα inhibition may help diminish chronic inflammatory long-term effects and avoid chronic allograft enteropathy.


Assuntos
Anticorpos Monoclonais/uso terapêutico , Inflamação/prevenção & controle , Intestinos/transplante , Traumatismo por Reperfusão/tratamento farmacológico , Fator de Necrose Tumoral alfa/antagonistas & inibidores , Proteínas de Fase Aguda , Animais , Apoptose/efeitos dos fármacos , Proteínas de Transporte/sangue , Infliximab , Pulmão/patologia , Masculino , Glicoproteínas de Membrana/sangue , Infiltração de Neutrófilos/efeitos dos fármacos , Ratos , Ratos Endogâmicos Lew
14.
Transpl Int ; 27(3): 280-9, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24279605

RESUMO

Despite a negative pretransplant cross-match, intestinal transplant recipients can mount humoral immune responses soon after transplantation. Moreover, the development of donor-specific anti-HLA antibodies (DSAs) is associated with severe graft injury. Between June 2000 and August 2011, 30 patients (median age 37.6±9.8 years) received isolated intestinal transplantations (ITX, n=18) or multivisceral transplantations (MVTXs, n=12) at our center. We screened for human leukocyte antigen (HLA) antibodies pre- and post-transplant. If patients produced DSAs, treatment with plasmapheresis and intravenous immunoglobulin (IVIG) was initiated. In the event of DSA persistence and/or treatment-refractory rejection, rituximab and/or bortezomib were added. Ten patients developed DSAs and simultaneously showed significant signs of rejection. These patients received plasmapheresis and IVIG. Eight patients additionally received rituximab, and two patients were treated with bortezomib. DSA values decreased upon antirejection therapy in 8 of the 10 patients. The development of DSAs following ITX is often associated with acute rejection. We observed that the number of mismatched antigens and epitopes correlates with the probability of developing de novo DSAs. Early diagnosis and therapy, including B-cell depletion and plasma cell inhibition, are crucial to preventing further graft injury.


Assuntos
Antígenos HLA/imunologia , Intestinos/transplante , Isoanticorpos/biossíntese , Imunologia de Transplantes , Adulto , Especificidade de Anticorpos , Feminino , Rejeição de Enxerto/etiologia , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/terapia , Humanos , Terapia de Imunossupressão/métodos , Intestinos/imunologia , Intestinos/patologia , Masculino , Pessoa de Meia-Idade , Doadores de Tecidos , Adulto Jovem
15.
Transplantation ; 95(12): 1512-20, 2013 Jun 27.
Artigo em Inglês | MEDLINE | ID: mdl-23619734

RESUMO

BACKGROUND: It is now well known that the outcome after allogeneic transplantation, such as incidence of acute rejections, very much depends on the individual's immune reactivity status. There is also increasing evidence that the presence of preexisting memory T cells can affect antigraft immune responses. METHODS: In a prospective study, we monitored peripheral CD4 and CD8 central memory, effector memory, and terminal differentiated effector memory (TEMRA) T cells in 55 patients who underwent deceased liver transplantation and received conventional immunosuppressive treatment with or without basiliximab induction. The primary endpoint of the study was acute allograft rejection during a 1-year follow-up period. RESULTS: We observed significantly increased proportions of CD4 and CD8 TEMRA cells in patients before transplantation compared with healthy controls (P=0.006 and 0.009, respectively). This characteristic was independent of the underlying disease. In patients with no signs of acute rejection, we observed an immediate reduction of CD4 TEMRA cells. In contrast, patients who experienced acute cellular rejection, and especially antibody-mediated rejection, displayed persistent elevated TEMRA cells (P=0.017 and 0.027, respectively). Basiliximab induction therapy did not influence CD4 and CD8 TEMRA numbers. CONCLUSIONS: Conventional immunosuppressive or basiliximab treatment cannot control the persistence of TEMRA T cells, which may contribute to acute cellular rejection and antibody-mediated rejection after liver transplantation. In the future, specific targeting of TEMRA cells in selected patients may prevent the occurrence of difficult to treat steroid-resistant rejections, thereby leading to improved patient outcome.


Assuntos
Linfócitos T CD4-Positivos/citologia , Rejeição de Enxerto/imunologia , Memória Imunológica/imunologia , Falência Hepática/terapia , Transplante de Fígado/imunologia , Adulto , Idoso , Anticorpos Monoclonais/uso terapêutico , Basiliximab , Linfócitos T CD8-Positivos/citologia , Diferenciação Celular , Feminino , Humanos , Imunossupressores/uso terapêutico , Falência Hepática/imunologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Proteínas Recombinantes de Fusão/uso terapêutico , Reação em Cadeia da Polimerase Via Transcriptase Reversa
16.
Transpl Int ; 26(4): 392-401, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23293928

RESUMO

Intestinal transplantation (ITX) can be a successful treatment for patients with irreversible intestinal failure and associated severe complications. Because of long waiting periods and organ shortages, the precise identification of eligible patients and their early referral to centers that perform ITX is important. We retrospectively analyzed all patients who were referred to our center between 2000 and 2011 concerning their referral criteria, waitlist characteristics, and outcome. A total of 87 patients (47 male patients, 40 female patients; median age 39.8 ± 13.4 years) were referred to our center. All patients presented with intestinal failure caused by short bowel syndrome or motility disorders. About 80.5% of patients were evaluated for isolated ITX, modified multivisceral (mMVTX), or multivisceral transplantation (MVTX). About 56.3% were listed at EUROTRANSPLANT, 33.3% suffered from severe secondary organ failure requiring MVTX, and 34.5% were transplanted. 14.3% (all MVTX-candidates) died on the waitlist as a result of infectious complications. The high proportion of MVTX candidates underlines the need for early referral to specialized centers. MVTX-candidates have a high waitlist mortality for different reasons. However, the current allocation policy for MVTX does not mirror the severity of disease and may therefore contribute to high waitlist mortality.


Assuntos
Intestinos/transplante , Listas de Espera , Adulto , Colestase/etiologia , Doença Hepática Terminal/etiologia , Feminino , Antígenos HLA/imunologia , Humanos , Masculino , Pessoa de Meia-Idade , Nutrição Parenteral Total/efeitos adversos , Estudos Retrospectivos
17.
Curr Opin Organ Transplant ; 17(3): 258-67, 2012 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-22476222

RESUMO

PURPOSE OF REVIEW: Abdominal wall closure after intestinal transplantation (ITX) or multivisceral transplantation (MVTX) is challenging because of the loss of abdominal domain and wall elasticity as a result of previous operations and donor-to-recipient weight and height mismatch. RECENT FINDINGS: We report on abdominal wall closure management in 30 ITX and MVTX recipients. In 60% of patients (n = 18), a primary abdominal closure (PAC) was achieved, in 40% (n = 12) a staged closure (SAC) was necessary. Patients with PAC had undergone less pretransplant operations and required less posttransplant relaparotomies. They were mainly ITX recipients or more abdominal domain because of a longer intestinal remnant. A literature review revealed different strategies to overcome a failed primary closure. They focus on graft reduction or an enlargement of the abdominal domain. The latter includes temporary coverage with prosthetic materials for SAC. Definite abdominal closure is achieved by skin only closure, or by using acellular dermal matrix, rotational flaps, rectus muscle fascia or abdominal wall grafts. SUMMARY: Abdominal wall reconstruction after ITX/MVTX is commonly demanded and can be conducted by different strategies. The technique should be easy to use in a timely manner and should prevent abdominal infections, intestinal fistulation, incisional hernias, and wound dehiscence.


Assuntos
Parede Abdominal/cirurgia , Hérnia Abdominal/cirurgia , Herniorrafia/métodos , Transplante de Órgãos/efeitos adversos , Derme Acelular , Adulto , Criança , Feminino , Hérnia Abdominal/etiologia , Humanos , Intestino Delgado/cirurgia , Intestino Delgado/transplante , Masculino , Pessoa de Meia-Idade , Tratamento de Ferimentos com Pressão Negativa , Procedimentos de Cirurgia Plástica/métodos , Reoperação , Estudos Retrospectivos , Retalhos Cirúrgicos , Telas Cirúrgicas
19.
Ann Transplant ; 14(4): 52-7, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-20009156

RESUMO

BACKGROUND: Although spondylodiscitis is rare, it is increasingly described in patients with compromised immunity due to malignancy, chemotherapy or immunosuppression. Typical pathogens are staphylococcus aureus and enterobacteria; fungal spondylodiscitis is uncommon. CASE REPORT: We present a case of aspergillus spondylodiscitis following pulmonary aspergillosis in a patient with multivisceral and kidney transplantation. Due to irreversible disc destruction, surgical restoration by autologous iliac crest graft was required in addition to intravenous antifungal therapy, which consisted of voriconazole, caspofungin and liposomal amphotericin B. CONCLUSIONS: Aspergillus spondylodiscitis is a diagnostic and therapeutic challenge, a combination of surgical debridement and antifungal therapy is inevitable to prevent rapid progression of invasive aspergillosis and neurological damage.


Assuntos
Aspergillus , Discite/etiologia , Transplante de Órgãos , Complicações Pós-Operatórias , Aspergilose Pulmonar/complicações , Tacrolimo/efeitos adversos , Adulto , Antifúngicos/uso terapêutico , Discite/microbiologia , Discite/cirurgia , Humanos , Imunossupressores/efeitos adversos , Disco Intervertebral/microbiologia , Disco Intervertebral/cirurgia , Dor Lombar/etiologia , Dor Lombar/microbiologia , Dor Lombar/cirurgia , Vértebras Lombares/microbiologia , Vértebras Lombares/cirurgia , Imageamento por Ressonância Magnética , Masculino , Pirimidinas/uso terapêutico , Triazóis/uso terapêutico , Voriconazol
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