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1.
Am J Transplant ; 16(10): 2973-2985, 2016 10.
Artículo en Inglés | MEDLINE | ID: mdl-27037650

RESUMEN

Intestinal transplantation (ITx) remains challenged by frequent/severe rejections and immunosuppression-related complications (infections/malignancies/drug toxicity). We developed the Leuven Immunomodulatory Protocol (LIP) in the lab and translated it to the clinics. LIP consists of experimentally proven maneuvers, destined to promote T-regulatory (Tregs)-dependent graft-protective mechanisms: donor-specific blood transfusion (DSBT); avoiding high-dose steroids/calcineurin-inhibitors; and minimizing reperfusion injury and endotoxin translocation. LIP was tested in 13 consecutive ITx from deceased donors (2000-2014) (observational cohort study). Recipient age was 37 years (2.8-57 years). Five-year graft/patient survival was 92%. One patient died at 9 months due to aspergillosis, another at 12 years due to nonsteroidal anti-inflammatory drug-induced enteropathy. Early acute rejection (AR) developed in two (15%); late AR in three (23%); all were reversible. No chronic rejection (CR) occurred. No malignancies developed and estimated glomerular filtration rate remained stable post-Tx. At last follow-up (3.5 years [0.5-12.5 years]), no donor-specific antibodies were detected and 11 survivors were total parenteral nutrition free with a Karnofsky score >90% in 8 recipients (follow-up >1 years). A high frequency of circulating CD4+ CD45RA- Foxp3hi memory Tregs was found (1.8% [1.39-2.21]), comparable to tolerant kidney transplant (KTx) recipients and superior to stable immunosuppression (IS)-KTx, KTx with CR, and healthy volunteers. In this ITx cohort we show that DSBT in a low-inflammatory/pro-regulatory environment activates Tregs at levels similar to tolerant-KTx, without causing sensitization. LIP limits rejection under reduced IS and thereby prolongs long-term survival to an extent not previously attained after ITx.


Asunto(s)
Rechazo de Injerto/mortalidad , Supervivencia de Injerto/inmunología , Tolerancia Inmunológica/inmunología , Enfermedades Intestinales/cirugía , Intestinos/trasplante , Linfocitos T Reguladores/inmunología , Adolescente , Adulto , Transfusión Sanguínea , Niño , Preescolar , Estudios de Cohortes , Femenino , Estudios de Seguimiento , Rechazo de Injerto/inmunología , Rechazo de Injerto/prevención & control , Humanos , Terapia de Inmunosupresión , Masculino , Persona de Mediana Edad , Pronóstico , Factores de Riesgo , Tasa de Supervivencia , Donantes de Tejidos , Trasplante Homólogo , Adulto Joven
2.
Am J Transplant ; 15(11): 2963-9, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26015088

RESUMEN

Multivisceral transplantation (MvTx) for diffuse venous portomesenteric thrombosis is a surgically and anesthesiologically challenging procedure, partly because of the risk of massive bleeding during visceral exenteration. Preoperative visceral artery embolization might reduce this risk. In three consecutive MvTx, the celiac trunk (CT) and superior mesenteric artery (SMA) were embolized immediately pretransplant. We analyzed demographics, serum D-lactate, pH, base excess, hemoglobin, blood pressure, transfused packed cell (PC) units, intervention time and outcome. Results are reported as median (range). All recipients were male (43, 22, 47 years old). Portomesenteric thrombosis followed antiphospholipid syndrome, neuroendocrine tumor and liver cirrhosis. A peritransplant D-lactate peak of 6.1 (5.1-7.6) mmol/L, lowest pH of 7.24 (7.18-7.36) and lowest base excess level of -9.5 (-7.6 to -11.5) were observed. Values normalized within 3 h posttransplant. Embolization and exenteration times were 80 (70-90) min and 140 (130-165) min, respectively, during which blood pressure remained stable, lowest hemoglobin was 6.1 (6.1-7.6) g/dL and three (2-4) PC were administered. All procedures were uneventful. Follow-up was 7 (4-9) months. The first patient died 4 months post-MvTx after an intracranial bleeding; the other patients are doing well. Our experience suggests that preoperative embolization of CT and SMA facilitates native organ resection in MvTx.


Asunto(s)
Pérdida de Sangre Quirúrgica/prevención & control , Embolización Terapéutica/métodos , Isquemia Mesentérica/diagnóstico por imagen , Vena Porta/diagnóstico por imagen , Trombosis de la Vena/cirugía , Vísceras/trasplante , Adulto , Bélgica , Terapia Combinada , Estudios de Seguimiento , Supervivencia de Injerto , Humanos , Masculino , Isquemia Mesentérica/patología , Persona de Mediana Edad , Trasplante de Órganos/efectos adversos , Trasplante de Órganos/métodos , Exenteración Pélvica/métodos , Vena Porta/patología , Cuidados Preoperatorios/métodos , Estudios Retrospectivos , Medición de Riesgo , Muestreo , Tomografía Computarizada por Rayos X/métodos , Receptores de Trasplantes , Resultado del Tratamiento , Trombosis de la Vena/diagnóstico por imagen , Adulto Joven
3.
Am J Transplant ; 15(12): 3247-54, 2015 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26288367

RESUMEN

Epithelioid hemangioendothelioma (EHE) is a rare vascular tumor with variable biological and clinical behavior. There is increasing experience with liver transplantation (LiTx) for hepatic EHE, even in cases of extrahepatic disease localization. Until now, no cases of lung transplantation (LuTx) had been reported for pulmonary EHE. This report describes three cases of EHE with multifocal disease in patients who underwent either serial or combined LiTx and LuTx.


Asunto(s)
Hemangioendotelioma Epitelioide/cirugía , Trasplante de Hígado , Trasplante de Pulmón , Adulto , Femenino , Humanos , Persona de Mediana Edad , Pronóstico , Tomografía Computarizada por Rayos X
4.
Acta Chir Belg ; 115(5): 376-8, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26560007

RESUMEN

Postoperative popliteal arteriovenous fistula is a very rare complication. We report a unique asymptomatic fistula in a 77-year-old male patient, seven months after total knee replacement. The diagnosis was suspected by a clinical palpable thrill and confirmed with a typical doppler ultrasound signaling. This vascular malformation was successfully treated by surgical resection of the fistula. Referring to the literature, considering the management of popliteal aneurysms, we suggest to prefer an open procedure in patients who are in good general condition.


Asunto(s)
Fístula Arteriovenosa/diagnóstico , Fístula Arteriovenosa/etiología , Artroplastia de Reemplazo de Rodilla/efectos adversos , Arteria Poplítea , Vena Poplítea , Anciano , Fístula Arteriovenosa/cirugía , Humanos , Masculino
5.
Am J Transplant ; 14(10): 2412-6, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25098631

RESUMEN

Isolated lung transplantation (LuTx) and liver transplantation are established treatments for irreversible lung and liver failure. Combined liver and lung transplantation (cLiLuTx) is a less common, but approved therapy of combined organ failure, mostly applied in patients suffering from progressive cystic fibrosis and advanced liver disease. We report a patient who was listed for LuTx due to end-stage chronic obstructive pulmonary disease and who developed drug-induced acute hepatic failure. The only therapeutic option was hyper-urgent cLiLuTx. To correct the poor coagulation in order to reduce the per-operative risk of bleeding, the liver was transplanted first. In anticipation of the longer lung preservation time, cold flushed lungs were preserved on a portable lung perfusion device for ex vivo normothermic perfusion for 11 h 15 min, transplanted sequentially off-pump, and reperfused after a total ex vivo time of 13 h 32 min and 16 h for the first and second lung, respectively. Ten months later, the patient is doing well and no rejection occurred. Normothermic ex vivo lung perfusion may help to prolong preservation time, facilitating long-distance transport and combined organ transplantation.


Asunto(s)
Enfisema/cirugía , Fallo Hepático/cirugía , Trasplante de Hígado , Trasplante de Pulmón , Enfisema/complicaciones , Femenino , Humanos , Fallo Hepático/complicaciones , Persona de Mediana Edad
6.
Acta Chir Belg ; 114(1): 71-4, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24720143

RESUMEN

Two male patients were admitted to the department of vascular surgery for treatment of a large infrarenal abdominal aortic aneurysm (AAA) and an associated horseshoe kidney (HSK). Both patients were successfully treated by endovascular aneurysm repair (EVAR). Horseshoe kidney is a rare and complex congenital anomaly, which increases significantly the technical difficulty of conventional surgical repair of an associated AAA. Appropriate preoperative evaluation of the vascular supply of the HSK by CT- angiography and renal function is mandatory for optimal planning of the treatment strategy. EVAR is regarded as a valuable alternative to open surgical therapy, in the absence of renal failure and provided that accessory renal arteries are absent or small.


Asunto(s)
Aneurisma de la Aorta Abdominal/cirugía , Riñón/anomalías , Arteria Renal/anomalías , Malformaciones Vasculares/cirugía , Procedimientos Quirúrgicos Vasculares/métodos , Anciano , Angiografía , Aneurisma de la Aorta Abdominal/complicaciones , Aneurisma de la Aorta Abdominal/diagnóstico , Diagnóstico Diferencial , Humanos , Riñón/irrigación sanguínea , Masculino , Arteria Renal/cirugía , Tomografía Computarizada por Rayos X , Malformaciones Vasculares/complicaciones , Malformaciones Vasculares/diagnóstico
7.
Am J Transplant ; 13(7): 1910-4, 2013 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-23730777

RESUMEN

Kidney transplantation is the treatment of choice for end-stage renal disease whereas indications for intestinal transplantation are currently restricted to patients with irreversible small bowel failure and severe complications of total parenteral nutrition (mostly shortage and infection of venous accesses, major electrolyte disturbances and liver failure). Enteric hyperoxaluria is secondary to certain intestinal diseases like intestinal resections, chronic inflammatory bowel disease and other malabsorption syndromes and can lead to end-stage renal disease requiring kidney transplantation. We report two patients suffering from renal failure due to enteric hyperoxaluria (secondary to extensive intestinal resection) in whom we elected to replace not only the kidney but also the intestine to prevent recurrence of hyperoxaluria in the transplanted kidney.


Asunto(s)
Hiperoxaluria/cirugía , Intestino Delgado/trasplante , Fallo Renal Crónico/cirugía , Trasplante de Riñón/métodos , Síndrome del Intestino Corto/cirugía , Adulto , Femenino , Estudios de Seguimiento , Humanos , Hiperoxaluria/complicaciones , Fallo Renal Crónico/etiología , Persona de Mediana Edad , Síndrome del Intestino Corto/complicaciones
8.
Int Immunopharmacol ; 94: 107501, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-33647822

RESUMEN

Mammalian target of rapamycin inhibitors (mTORi) are increasingly used after lung transplantation as part of a calcineurin inhibitor sparing regimen, aiming to preserve renal function. The aim of our study was to determine whether immunosuppressive therapy using mTORi in lung transplant recipients (LTR) is feasible in practice, or limited by intolerance and adverse events. Data were retrospectively assessed for all LTR transplanted between July 1991 and January 2020. Patients ever receiving mTORi (monotherapy or in combination with calcineurin inhibitor) as treatment of physicians' choice were included. 149/1184 (13%) of the LTR ever received mTORi. Main reasons to start were renal insufficiency (67%) and malignancy (21%). In 52% of the patients, mTORi was stopped due to side effects or drug toxicity after a median time of 159 days. Apart from death, main reasons for discontinuation were infection (19%) and edema (14%). Early discontinuation (<90 days) was mainly due to edema or gastrointestinal intolerance. As mTORi was stopped due to adverse events or drug intolerance in 52% of LTR, cautious consideration of advantages and disadvantages when starting mTORi is recommended.


Asunto(s)
Inmunosupresores/uso terapéutico , Trasplante de Pulmón , Serina-Treonina Quinasas TOR/antagonistas & inhibidores , Inhibidores de la Calcineurina/uso terapéutico , Femenino , Humanos , Inmunosupresores/efectos adversos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos
10.
JBR-BTR ; 97(1): 36-8, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24765771

RESUMEN

We report a case of intestinal ileal lipomatosis in a 56-year-old Caucasian male complicated with small bowel obstruction due to ileocolic intussusception with a lipoma serving as lead point. This rare disease is often only discovered incidentally as a consequence of mechanical complications and not well reported in the international literature, compared to intussusception due to an isolated lipoma. Computed tomography is the imaging modality of choice to depict complications of this distinct clinicopathological entity. Density measurements can confirm the fatty content and homogeneity analysis of the lesions can guide the radiologist in the differential diagnosis.


Asunto(s)
Enfermedades del Íleon/diagnóstico por imagen , Enfermedades del Íleon/etiología , Intususcepción/diagnóstico por imagen , Intususcepción/etiología , Lipoma/complicaciones , Lipoma/diagnóstico por imagen , Diagnóstico Diferencial , Humanos , Íleon/diagnóstico por imagen , Obstrucción Intestinal/diagnóstico por imagen , Obstrucción Intestinal/etiología , Intestino Delgado/diagnóstico por imagen , Masculino , Persona de Mediana Edad , Tomografía Computarizada por Rayos X/métodos
12.
J Hand Surg Eur Vol ; 34(2): 256-63, 2009 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-19369301

RESUMEN

Proximal row carpectomy (PRC) and scaphoid excision with four-corner fusion (4CF) are common motion-preserving, salvage procedures for the treatment of wrists with scaphoid nonunion (SNAC) or scapholunate advanced collapse (SLAC). A systematic review was undertaken to clarify controversies regarding which of these procedures has the better outcome. We collated 52 articles that examine outcomes for SNAC or SLAC patients undergoing PRC or 4CF. Although the lack of unbiased trials must be acknowledged, this systematic review confirms that both procedures give improvements in pain and subjective outcome measures for patients with symptomatic and appropriately staged SLAC or SNAC wrists. PRC may provide better postoperative range of movement and lacks the potential complications specific to 4CF (nonunion, hardware issues and dorsal impingement). However, the risk of subsequent osteoarthritis is significantly higher in PRC patients despite the majority being asymptomatic at the time of review. Grip strength, pain relief and subjective outcomes are similar in both treatment groups.


Asunto(s)
Huesos del Carpo/cirugía , Fracturas no Consolidadas/cirugía , Inestabilidad de la Articulación/cirugía , Procedimientos Ortopédicos/métodos , Traumatismos de la Muñeca/cirugía , Fracturas no Consolidadas/fisiopatología , Fuerza de la Mano/fisiología , Humanos , Inestabilidad de la Articulación/fisiopatología , Seudoartrosis/cirugía , Rango del Movimiento Articular , Hueso Escafoides/lesiones , Hueso Escafoides/cirugía , Resultado del Tratamiento , Traumatismos de la Muñeca/fisiopatología
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