Person: Justo Alonso, Iago
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First Name
Iago
Last Name
Justo Alonso
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Medicina
Department
Cirugía
Area
Cirugía
Identifiers
13 results
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Item Analyzing predictors of graft survival in patients undergoing liver transplantation with donors aged 70 years and over(World Journal of Gastroenterology, 2018) Caso Maestro, Óscar; Jiménez Romero, Luis Carlos; Justo Alonso, Iago; Calvo Pulido, Jorge; Lora Pablos, David; Marcacuzco Quinto, Alberto Alejandro; Cambra Molero, Félix; García-Sesma Pérez-Fuentes, Álvaro; Pérez Flecha, Marina; Muñoz Arce, Carlos; Loinaz Segurola, Carmelo; Manrique Municio, AlejandroAIM To increase the number of available grafts. METHODS This is a single-center comparative analysis performed between April 1986 and May 2016. Two hundred and twelve liver transplantation (LT) were performed with donors ≥ 70 years old (study group). Then, we selected the first cases that were performed with donors < 70 years old immediately after the ones that were performed with donors ≥ 70 years old (control group). RESULTS Graft and patient survivals were similar between both groups without increasing the risk of complications, especially primary non-function, vascular complications and biliary complications. We identified 5 risk factors as independent predictors of graft survival: recipient hepatitis C virus (HCV)-positivity [hazard ratio (HR) = 2.35; 95% confidence interval (CI): 1.55-3.56; P = 0.00]; recipient age (HR = 1.04; 95%CI: 1.02-1.06; P = 0.00); donor age X model for end-stage liver disease (D-MELD) (HR = 1.00; 95%CI: 1.00-1.00; P = 0.00); donor value of serum glutamic-pyruvic transaminase (HR = 1.00; 95%CI: 1.00-1.00; P = 0.00); and donor value of serum sodium (HR = 0.96; 95%CI: 0.94-0.99; P = 0.00). After combining D-MELD and recipient age we obtained a new scoring system that we called DR-MELD (donor age X recipient age X MELD). Graft survival significantly decreased in patients with a DR-MELD score ≥ 75000, especially in HCV patients (77% vs 63% at 5 years in HCV-negative patients, P = 0.00; and 61% vs 25% at 5 years in HCV-positive patients; P = 0.00).Item Octogenarian liver grafts: Is their use for transplant currently justified?(World Journal of Gastroenterology, 2017) Jiménez Romero, Luis Carlos; Cambra Molero, Félix; Caso Maestro, Óscar; Manrique Municio, Alejandro; Calvo Pulido, Jorge; Marcacuzco Quinto, Alberto Alejandro; Rioja, Paula; Lora Pablos, David; Justo Alonso, IagoAim: To analyse the impact of octogenarian donors in liver transplantation. Methods: We present a retrospective single-center study, performed between November 1996 and March 2015, that comprises a sample of 153 liver transplants. Recipients were divided into two groups according to liver donor age: recipients of donors ≤ 65 years (group A; n = 102), and recipients of donors ≥ 80 years (group B; n = 51). A comparative analysis between the groups was performed. Quantitative variables were expressed as mean values and SD, and qualitative variables as percentages. Differences in properties between qualitative variables were assessed by χ2 test. Comparison of quantitative variables was made by t-test. Graft and patient survivals were estimated using the Kaplan-Meier method. Results: One, 3 and 5-year overall patient survival was 87.3%, 84% and 75.2%, respectively, in recipients of younger grafts vs 88.2%, 84.1% and 66.4%, respectively, in recipients of octogenarian grafts (P = 0.748). One, 3 and 5-year overall graft survival was 84.3%, 83.1% and 74.2%, respectively, in recipients of younger grafts vs 84.3%, 79.4% and 64.2%, respectively, in recipients of octogenarian grafts (P = 0.524). After excluding the patients with hepatitis C virus cirrhosis (16 in group A and 10 in group B), the 1, 3 and 5-year patient (P = 0.657) and graft (P = 0.419) survivals were practically the same in both groups. Multivariate Cox regression analysis demonstrated that overall patient survival was adversely affected by cerebrovascular donor death, hepatocarcinoma, and recipient preoperative bilirubin, and overall graft survival was adversely influenced by cerebrovascular donor death, and recipient preoperative bilirubin. Conclusion: The standard criteria for utilization of octogenarian liver grafts are: normal gross appearance and consistency, normal or almost normal liver tests, hemodynamic stability with use of < 10 μg/kg per minute of vasopressors before procurement, intensive care unit stay < 3 d, CIT < 9 h, absence of atherosclerosis in the hepatic and gastroduodenal arteries, and no relevant histological alterations in the pre-transplant biopsy, such as fibrosis, hepatitis, cholestasis or macrosteatosis > 30%.Item Innate Lymphoid cells groups 1 and 3 in the epitelial compartment of functional human intestinal allografts(American Journal of transplantation, 2016) Talayero, Paloma; Mancebo Sierra, María Esther; Calvo Pulido, Jorge; Rodríguez Muñoz, Sarbelio; Bernardo, I.; Laguna Goya, Rocio; Cano Romero, Francisco; García-Sesma Pérez-Fuentes, Álvaro; Loinaz Segurola, Carmelo; Jiménez Romero, Luis Carlos; Justo Alonso, Iago; Paz Artal, Estela NatividadWe examined intraepithelial lymphocytes (IELs) in 213 ileal biopsies from 16 bowel grafts and compared them with 32 biopsies from native intestines. During the first year posttransplantation, grafts exhibited low levels of IELs (percentage of CD103(+) cells) principally due to reduced CD3(+) CD8(+) cells, while CD103(+) CD3(-) cell numbers became significantly higher. Changes in IEL subsets did not correlate with histology results, isolated intestine, or multivisceral transplants, but CD3(-) IELs were significantly higher in patients receiving corticosteroids. Compared with controls, more CD3(-) IELs of the grafts expressed CD56, NKp44, interleukin (IL)-23 receptor, retinoid-related orphan receptor gamma t (RORγt), and CCR6. No difference was observed in granzyme B, and CD3(-) CD127(+) cells were more abundant in native intestines. Ex vivo, and after in vitro activation, CD3(-) IELs in grafts produced significantly more interferon (IFN)-γ and IL-22, and a double IFNγ(+) IL-22(+) population was observed. Epithelial cell-depleted grafts IELs were cytotoxic, whereas this was not observed in controls. In conclusion, different from native intestines, a CD3(-) IEL subset predominates in grafts, showing features of natural killer cells and intraepithelial ILC1 (CD56(+) , NKp44(+) , CCR6(+) , CD127(-) , cytotoxicity, and IFNγ secretion), ILC3 (CD56(+) , NKp44(+) , IL-23R(+) , CCR6(+) , RORγt(+) , and IL-22 secretion), and intermediate ILC1-ILC3 phenotypes (IFNγ(+) IL-22(+) ). Viability of intestinal grafts may depend on the balance among proinflammatory and homeostatic roles of ILC subsets.Item Estudio comparativo entre receptores de trasplante hepático mayores y menores de 60 años : resultados a largo plazo(2013) Justo Alonso, Iago; Moreno González, Enrique; Jiménez Romero, Carlos; Abradelo de Usera, ManuelItem Trasplante hepático como tratamiento de la polineuropatía amiloidótica familiar en pacientes mayores de 60 años(Medicina Clínica, 2015) Marcacuzco Quinto, Alberto Alejandro; Manrique Municio, Alejandro; Jiménez Romero, Luis Carlos; Loinaz Segurola, Carmelo; Calvo Pulido, Jorge; Justo Alonso, Iago; García-Sesma Pérez-Fuentes, Álvaro; Abradelo De Usera, Manuel; Cambra Molero, Félix; Caso Maestro, Óscar; Moreno González, EnriqueBackground and objective: Familial amyloid polyneuropathy (FAP) is the most prevalent type of hereditary systemic amyloidosis. It is an autosomal dominant disease characterized by the deposition of an abnormal variant transthyretin. It has a worldwide distribution, with localized endemic areas in Portugal, Sweden and Japan. In Spain there is an endemic focus, located in Mallorca. Liver transplantation is the only curative option for patients with FAP. The aim of this study was to describe the clinical and demographic characteristics of patients transplanted with a diagnosis of PAF. Material and method: Six patients with PAF underwent liver transplantation between April 1986 and December 2012. Results: The mean age was 57.7+16 years, patients of Spanish origin were older than 60 years. All patients had progressive symptoms as mixed polyneuropathy. In 2 patients, combined heart-liver transplants sequentially were performed. Patient survival and graft was 80% at one, 3 and 5 years. Conclusions: The only effective treatment for etiologic PAF is liver transplantation. Early detection is the key to the treatment and control, avoiding the irreversible organ damage.Item Octogenarian liver grafts reaching centennial age after transplantation(Transplantation, 2017) Jiménez Romero, Luis Carlos; Caso Maestro, Óscar; Cambra Molero, Félix; Manrique Municio, Alejandro; Calvo Pulido, Jorge; Marcacuzco Quinto, Alberto Alejandro; Justo Alonso, IagoItem Trasplante hepático como tratamiento de la polineuropatía amiloidótica familiar en pacientes mayores de 60 años.(Medicina Clínica, 2015) Marcacuzco Quinto, Alberto Alejandro; Manrique Municio, Alejandro; Jiménez Romero, Luis Carlos; Loinaz Segurola, Carmelo; Calvo Pulido, Jorge; Justo Alonso, Iago; García-Sesma Pérez-Fuentes, Álvaro; Abradelo De Usera, Manuel; Cambra Molero, Félix; Caso Maestro, Óscar; Moreno González, EnriqueFundamento y objetivo La polineuropatía amiloidótica familiar (PAF) constituye el tipo más prevalente de amiloidosis sistémica hereditaria. Es una enfermedad autosómica dominante que se caracteriza por el depósito de una variante anómala de la transtiretina. Tiene una distribución mundial, con zonas endémicas localizadas en Portugal, Suecia y Japón. En España hay un foco endémico, localizado en Mallorca. El trasplante hepático es la única opción curativa para los pacientes con PAF. El objetivo de este estudio fue describir las características clínicas y demográficas de los pacientes trasplantados con diagnóstico de PAF. Material y método Se evaluaron 6 pacientes trasplantados por PAF entre abril de 1986 y diciembre de 2012. Resultados La edad media fue de 57,7+16 años, los pacientes de origen español eran mayores de 60 años. Todos los pacientes presentaban síntomas progresivos en forma de polineuropatía mixta. En 2 pacientes se realizó un doble trasplante hepatocardiaco secuencial, efectuándose en primer lugar el trasplante hepático. La supervivencia del paciente y del injerto fue del 80% a los uno, 3 y 5 años. Conclusiones El único tratamiento etiológico eficaz para la PAF es el trasplante hepático. Una detección temprana es la clave para el tratamiento y el control, evitándose el daño orgánico irreversible.Item Liver Transplantation Using Uncontrolled Donors After Circulatory Death: A 10-year Single-center Experience.(Transplantation, 2019) Nutu, Anisa; García-Conde, Maria; Jiménez Romero, Luis Carlos; Manrique Municio, Alejandro; Calvo Pulido, Jorge; Caso Maestro, Óscar; Marcacuzco Quinto, Alberto Alejandro; García-Sesma Pérez-Fuentes, Álvaro; Abradelo De Usera, Manuel; San Juan Garrido, Rafael; Justo Alonso, IagoBackground: One method for increasing the donor pool for orthotopic liver transplantations (OLTs) is to use uncontrolled donation after circulation death (uDCDs). Methods: From January 2006 to December 2016, we performed 75 OLTs using uDCD livers. The control group comprised a sample of 265 OLTs using livers of donations after brain death (DBDs). A comparative study was performed. Results: Of 256 potential uDCD donors cannulated, 75 (29.3%) livers were accepted for OLT. The amount of hemoderivatives transfused was significantly higher in the uDCD group. The rate of primary nonfunction was also significantly higher (P = 0.031) in uDCD recipients (8%) than DBD recipients (1.5%). The overall rate of biliary complications was significantly higher (P = 0.001) in uDCD recipients (23 cases, 30.6%) than DBD recipients (28 cases, 10.6%). In the uDCD group, 1-, 3-, and 5-year patient survival rates were 82.7%, 73%, and 71.5%, respectively; in the DBD group, they were 89%, 83.7%, and 78.8%, respectively (P = 0.180). In the uDCD group, 1-, 3-, and 5-year graft survival rates were 73.3%, 65.1%, and 63.6%, respectively; in the DBD group, they were 87.1%, 81.9%, and 76.5%, respectively (P = 0.013). Multivariate analysis showed that independent risk factors for patient and graft survival were intraoperative transfusion of >6 units of packed red blood cell concentrates and recipients who were older than 60 years. Conclusions: Although graft survival is significantly lower using uDCD livers, 5-year patient survival in recipients of DBD and uDCD livers is similar. After careful selection, the livers of uDCD can be selectively used for OLT.Item Kidney transplantation from uncontrolled donation after circulatory death donors maintained by nECMO has long-term outcomes comparable to standard criteria donation after brain death(American Journal of Transplantation, 2018) Molina Martín, María; Guerrero Ramos, Félix; Fernández Ruiz, Mario; González Monte, Esther; Cabrera, Jimena; Morales Ruiz, Enrique; Gutiérrez Martínez, Eduardo; Hernández Martínez, Eduardo Rafael; Polanco, Natalia; Hernández Vicente, Ana; Praga Terente, Manuel; Rodríguez Antolín, Alfredo; Pamplona Casamayor, Manuel; Rosa, Federico de la; Cavero, Teresa; Chico, Mario; Villar, Alicia; Justo Alonso, Iago; Andrés Belmonte, AmadoUncontrolled donation after circulatory death (uDCD) increases organ availability for kidney transplant (KT) with short-term outcomes similar to those obtained from donation after brain death (DBD) donors. However, heterogeneous results in the long term have been reported. We compared 10-year outcomes between 237 KT recipients from uDCD donors maintained by normothermic extracorporeal membrane oxygenation (nECMO) and 237 patients undergoing KT from standard criteria DBD donors during the same period at our institution. We further analyzed risk factors for death-censored graft survival in the uDCD group. Delayed graft function (DGF) was more common in the uDCD group (73.4% vs 46.4%; P < .01), although glomerular filtration rates at the end of follow-up were similar in the 2 groups. uDCD and DBD groups had similar rates for 10-year death-censored graft (82.1% vs 80.4%; P = .623) and recipient survival (86.2% vs 87.6%; P = .454). Donor age >50 years was associated with graft loss in the uDCD group (hazard ratio: 1.91; P = .058), whereas the occurrence of DGF showed no significant effect. uDCD KT under nECMO support resulted in similar graft function and long-term outcomes compared with KT from standard criteria DBD donors. Increased donor age could negatively affect graft survival after uDCD donation.Item Octogenarian liver grafts: Is their use for transplant currently justified?(World Journal Gastroenterology, 2017) Rioja, Paula; Jiménez Romero, Luis Carlos; Cambra Molero, Félix; Caso Maestro, Óscar; Manrique Municio, Alejandro; Calvo Pulido, Jorge; Marcacuzco Quinto, Alberto Alejandro; Lora Pablos, David; Justo Alonso, IagoAIM To analyse the impact of octogenarian donors in liver transplantation. METHODS We present a retrospective single-center study, performed between November 1996 and March 2015, that comprises a sample of 153 liver transplants. Recipients were divided into two groups according to liver donor age: recipients of donors ≤ 65 years (group A; n = 102), and recipients of donors ≥ 80 years (group B; n = 51). A comparative analysis between the groups was performed. Quantitative variables were expressed as mean values and SD, and qualitative variables as percentages. Differences in properties between qualitative variables were assessed by χ2 test. Comparison of quantitative variables was made by t-test. Graft and patient survivals were estimated using the Kaplan-Meier method. RESULTS One, 3 and 5-year overall patient survival was 87.3%, 84% and 75.2%, respectively, in recipients of younger grafts vs 88.2%, 84.1% and 66.4%, respectively, in recipients of octogenarian grafts (P = 0.748). One, 3 and 5-year overall graft survival was 84.3%, 83.1% and 74.2%, respectively, in recipients of younger grafts vs 84.3%, 79.4% and 64.2%, respectively, in recipients of octogenarian grafts (P = 0.524). After excluding the patients with hepatitis C virus cirrhosis (16 in group A and 10 in group B), the 1, 3 and 5-year patient (P = 0.657) and graft (P = 0.419) survivals were practically the same in both groups. Multivariate Cox regression analysis demonstrated that overall patient survival was adversely affected by cerebrovascular donor death, hepatocarcinoma, and recipient preoperative bilirubin, and overall graft survival was adversely influenced by cerebrovascular donor death, and recipient preoperative bilirubin. CONCLUSION The standard criteria for utilization of octogenarian liver grafts are: normal gross appearance and consistency, normal or almost normal liver tests, hemodynamic stability with use of < 10 μg/kg per minute of vasopressors before procurement, intensive care unit stay < 3 d, CIT < 9 h, absence of atherosclerosis in the hepatic and gastroduodenal arteries, and no relevant histological alterations in the pre-transplant biopsy, such as fibrosis, hepatitis, cholestasis or macrosteatosis > 30%.