Frequency of skin diseases in renal transplant recipients and patients with chronic kidney disease in a tertiary center: a cross-sectional study

ABSTRACT BACKGROUND: The prevalence of chronic kidney disease (CKD) has increased in the recent decades, along with the number of patients in the terminal stages of this disease, requiring transplantation. Some skin disorders are more frequent in patients with CKD and in renal transplant recipients (RTR). OBJECTIVES: To evaluate the frequency of skin diseases in RTR and patients with CKD receiving conservative treatment. DESIGN AND SETTING: This observational cross-sectional study recruited consecutive patients with CKD and RTR from a nephrology clinic at a teaching hospital in Brazil between 2015 and 2020. METHODS: Quantitative, descriptive, and analytical approaches were used. The sample was selected based on convenience sampling. Data were collected from dermatological visits and participants' medical records. RESULTS: Overall, 308 participants were included: 206 RTR (66.9%, median age: 48 years, interquartile range [IQR] 38.0-56.0, 63.6% men) and 102 patients with CKD (33.1%, median age: 61.0 years, IQR 50.0-71.2, 48% men). The frequency of infectious skin diseases (39.3% vs. 21.6% P = 0.002) were higher in RTR than in patients with CKD. Neoplastic skin lesions were present in nine (4.4%) RTR and in only one (1.0%) patient with CKD. Among the RTR, the ratio of basal cell carcinoma to squamous cell carcinoma was 2:1. CONCLUSIONS: This study revealed that an increased frequency of infectious skin diseases may be expected in patients who have undergone kidney transplantation. Among skin cancers, BCC is more frequently observed in RTR, especially in those using azathioprine.

Evolución y factores de riesgo de mortalidad en una cohorte pediátrica con enfermedad renal crónica en Paraguay: estudio multicéntrico

Contexto: la enfermedad renal crónica (ERC) tiene una alta morbimortalidad y un alto costo de tratamiento. Entre sus causas principales en Pediatría se describen las anomalías congénitas del riñón y las vías urinarias (CAKUT, por sus siglas en inglés) Objetivo: determinar la evolución y los factores asociados a mortalidad de una cohorte pediátrica atendida en dos hospitales de referencia nacional, con el fin de elaborar estrategias para el manejo precoz y multidisciplinario de esta enfermedad y, de esa manera, optimizar los recursos para reducir la morbimortalidad de la enfermedad. Metodología: estudio de cohorte retrospectivo de pacientes de dos hospitales de referencia entre enero del 2000 y diciembre del 2020, en el cual se estudiaron: edad, sexo, seguro social, ingreso fijo, causa de la ERC, estadio de la ERC al ingreso y al final de estudio, requerimiento y tipo de diálisis, trasplante y óbito, donde el estadio de la ERC se clasificó según las guías K/DOQI (Kidney Disease Quality Iniciative). Por su parte, se relacionó óbito con edad, sexo, ingreso fijo, seguro social, estadio de ERC y requerimiento de diálisis. Se destaca que el análisis se realizó con el programa Epi Info (Atlanta), el cual usa estadística descriptiva y la prueba de chi cuadrado para establecer asociaciones con óbito a un nivel de significancia de 0,05. Resultados: se estudió a 187 pacientes de entre 2 y 17 años de edad, 96 mujeres y 91 varones, donde la mayoría eran mayores de10 años (44,9 %). Entre las causas de ERC más frecuentes se encuentran las anomalías congénitas (CAKUT) (54,5 %) y las indeterminadas (16,6 %); el estadio de ERC al ingreso estuvo repartido entre I (2,1 %), II (16 %), III (25,7 %), IV (8 %), y V (48,1 %); además, el 59,4 % requirió diálisis, el 87,3 % hemodiálisis, el 12,6 % diálisis peritoneal y 13,3 % recibieron un trasplante; por último, la mortalidad fue del 24,5 %, lo cual se asoció con el estadio de ERC al ingreso y el requerimiento de diálisis. Conclusiones: este estudio de cohorte demostró mejores resultados en la evolución de los niños con ERC diagnosticados en estadios tempranos. El diagnóstico y tratamiento precoces ayudan a mejorar la morbimortalidad.

Background: Chronic kidney disease (CKD) has high morbidity and mortality and high cost of treatment. Among the main causes are congenital anomalies of the kidney and urinary tract (CAKUT). Purpose: To determine the evolution and factors associated with mortality in a pediatric cohort attended in two national referral hospitals, in order to develop strategies for early and multidisciplinary management of this disease and, thus, optimize resources to reduce morbidity and mortality of the disease. Methodology: Retrospective cohort study of patients in two reference hospitals between January 2000 and December 2020. Age, sex, social security, fixed income, cause of CKD, CKD stage at admission and at the end of study, requirement and type of dialysis, transplant and death were studied. CKD stage was classified according to the K/DOQI (Kidney Disease Quality Initiative) guidelines. Death was related to age, sex, fixed income, social security, CKD stage, and dialysis requirement. Data analysis was performed with the Epi Info program (CDC, Atlanta), using descriptive statistics, and the chi-square test to establish associations with death at a significance level of 0.05. Results: 187 patients between 2 and 17 years of age 96 women and 91 men, were studied. Most of the patients were older than 10 years (44.9%). Among the most frequent causes of CKD are congenital anomalies (CAKUT) (54.5%) and undetermined (16,6%). CKD stage at admission was I (2,1%), II (16%), III (25,7%), IV (8%), and V (48.1%). 59.4% required dialysis, hemodialysis (87.3%), peritoneal dialysis (12.7%), 13.3% underwent kidney transplant. Mortality rate was 24.5%, which was associated with CKD stage at admission and dialysis requirement. Conclusions: This cohort study demonstrated better outcomes in children with CKD diagnoses at its early stages. The early diagnosis and treatment help to improve the morbidity and mortality.

The relationship between uric acid levels and graft function in renal transplant patients who discontinued steroid therapy / Relación entre niveles de ácido úrico y función del injerto en pacientes de trasplante renal que interrumpieron la terapia con esteroides

ABSTRACT Introduction: High uric acid levels are commonly encountered in kidney transplant recipients, and can be associated with allograft dysfunction. Our study aims to examine the relationship between UA levels and graft function in patients discontinuing steroids. Methods: In this single-center-retrospective study, 56 patients discontinued steroid therapy from among 678 RT patients transplanted from living donors between 1999-2020 were included. The mean age of the study group was 45.8±8.8 years. Causes of steroid discontinuation, creatinine levels concurrent with uric acid levels before and after steroid discontinuation (mean 3.9 ± 2.1 years), acute rejection numbers, demographics, durations of dialysis and transplantation, medications, laboratory data, human leukocyte antigen (HLA) mismatch numbers, blood-pressure (BP), body mass index, delayed acute rejection (DAR) numbers (3 months post-transplantation) were all recorded. Results: Creatinine and uric acid levels were seen to have increased after steroid discontinuation, there was a significant relationship between them (p<0.001). Statistically significant correlation was found between increased creatinine levels after steroid discontinuation and graft survival with higher HLA mismatch; 39 (69.6%) patients with mismatch ≥2, and 17 patients with mismatch <2 (30.4%) (p=0.049) . No significant relationship was found between DAR numbers before and after steroid discontinuation, and creatinine levels after steroid discontinuation. Conclusion: Per model obtained as a result of multivariate linear analysis, hyperuricemia and HLA mismatch numbers (p= 0.048 and p= 0.044, respectively) are independent predictive factors for graft dysfunction in patients discontinuing steroids. Accordingly, negative effects of modeling should be kept in mind for long-term graft survival in patients who plan to continue with steroid-sparing regimens.

RESUMEN Introducción: Con frecuencia se registran niveles elevados de ácido úrico en receptores de trasplantes renales que pueden estar asociados a disfunción de aloinjerto. El presente estudio tiene por objeto examinar la relación entre los niveles de AU y la función del injerto en pacientes que interrumpieron la terapia con esteroides. Métodos: En este estudio retrospectivo en un solo centro participaron 56 pacientes con interrupción de la terapia con esteroides de un total de 678 pacientes con TR receptores de trasplante de donantes vivos en el período 1999-2020. La edad promedio de la población de estudio fue de 45,8 ± 8,8 años. En el estudio se registraron causas de la interrupción de la terapia con esteroides, niveles de creatinina concurrentes con niveles de ácido úrico antes y después de la interrupción de la terapia con esteroides (promedio de 3,9 ± 2,1 años), números de rechazo agudo, datos demográficos, duraciones del período de diálisis y trasplante, medicación (uso de inmunosupresores, antihipertensivos), datos de laboratorio, números de desajuste del antígeno leucocitario humano (HLA), presión arterial (PA), índice de masa corporal, números de rechazo agudo retardado (DAR) (3 meses después del trasplante). Resultados: Se observó que los niveles de creatinina y ácido úrico aumentaron tras interrumpir la administración de esteroides, con una relación significativa entre ambos (p<0,001). Se identificó una correlación estadísticamente significativa entre el aumento en los niveles de creatinina tras la interrupción de la terapia de esteroides y la supervivencia del injerto con un mayor desajuste de HLA: 39 pacientes (el 69,6%) con desajuste ≥2 y 17 (el 30,4%) pacientes con desajuste <2 (p=0,049). No se encontró una relación significativa entre el número de DAR antes y después de la interrupción del tratamiento con esteroides, así como en los niveles de creatinina tras la interrupción de la terapia con esteroides. Conclusión: De acuerdo con el modelo obtenido como resultado del análisis lineal multivariable, la hiperuricemia y los números de desajuste de HLA (p=0,048 y p=0,044, respectivamente) constituyen factores predictivos independientes para la disfunción del injerto en pacientes que interrumpen la terapia con esteroides. En consecuencia, se deben tener en cuenta los efectos negativos del modelado para la supervivencia del injerto a largo plazo en pacientes que planean proseguir con regímenes con reducción de la administración esteroides.

Sarcoma de Kaposi en orofaringe en paciente postrasplante renal y manejo con inhibidor de señal de coestimulación e inhibidor de mTOR

Introducción: el sarcoma de Kaposi en pacientes de postrasplante renal es poco frecuente y está asociado usualmente a infección por herpes 8 y a dosis altas de inmunosupresión. Objetivo: descripción reporte de caso de Sarcoma de Kaposi en orofaringe en paciente postrasplante renal manejo con inhibidor de señal de coestimulación e inhibidor mTOR. Presentación del caso: en este artículo se describe el caso de una paciente, con antecedente de trasplante renal, con diagnóstico de sarcoma de Kaposi en una localización muy poco frecuente: a nivel orofaríngeo. Se realiza una revisión de los factores de riesgo, patogenia y un acercamiento en el manejo. De igual manera, se realiza un seguimiento y manejo con inhibidor de señal de coestimulación (belatacept) e inhibidor de mTOR. Discusión y conclusión: el sarcoma de Kaposi es una de las neoplasias postrasplante con mayor incidencia comparativamente con la población no trasplantada, donde el papel de la reactivación de la infección viral, más el papel de la inmunosupresión, son puntos fundamentales en la génesis de la neoplasia. La determinación del estatus serológico IgG para HHV8 podría ser una estrategia de determinación del riesgo en el pretrasplante.

Introduction: Kaposi sarcoma in post-renal transplantation patients is a rare entity, usually associated with herpes 8 infection and high doses of immunosupresion. Purpose: Case report description of Kaposi's sarcoma in the oropharynx in a post-renal transplant patient managed with co-stimulation signal inhibitor and mTOR inhibitor. Case presentation: This article describes the case of a patient, with a history of renal transplant, with a diagnosis of Kaposi's sarcoma in a very rare location: oropharyngeal level. A review of the risk factors, pathogenesis and a management approach is made. Likewise, a follow-up and management with co-stimulation signal inhibitor (belatacept) and mTOR inhibitor is performed. Discussion and conclusion: Kaposi's sarcoma is one of the post-transplant neoplasms with the highest incidence compared to the non-transplanted population, where the role of viral infection reactivation, plus the role of immunosuppression, are fundamental points in the genesis of the neoplasm. The determination of IgG serological status for HHV8 could be a strategy to determine risk in pretransplantation.

Manifestación cutánea de histoplasmosis diseminada en un paciente con trasplante renal / Cutaneous manifestation of disseminated histoplasmosis in a renal transplant patient

Introducción: La infección por Histoplasma capsulatum ocurre con frecuencia en pacientes con inmunosupresión por VIH o en trasplantados que reciben tratamiento inmunosupresor. La infección primaria se adquiere por vía inhalatoria con afectación pulmonar y posteriormente puede diseminarse a otros órganos como hígado, intestinos, corazón, riñones, piel o tejido óseo. Es muy raro que ocurra en pacientes con trasplante renal, aunque sí es común en el trasplante pulmonar. Objetivo: Presentar el caso de un paciente con antecedente de trasplante renal 9 años antes que ingresó por presentar lesiones cutáneas no típicas de histoplasmosis, quien desarrolló 2 semanas después histoplasmosis diseminada, sin compromiso pulmonar. Caso clínico: Paciente masculino de 65 años de edad postrasplante renal, que desarrolló manifestación cutánea caracterizada por pápulas y placas eritematodescamativas con superficies costrosas y atróficas, acompañado de fiebre persistente y adenopatías. No presentó signos o síntomas pulmonares como manifestación de infección primaria. El diagnóstico definitivo se estableció mediante histopatología de piel y ganglios cervicales, además del crecimiento de H. capsulatum en hemocultivos específicos para hongos. Recibió tratamiento con anfotericina B liposomal y posteriormente con itraconazol de forma ambulatoria con evolución favorable. Conclusión: El caso descrito es importante, ya que no se asemeja a la presentación típica de esta entidad, es decir, con afectación pulmonar primaria y posteriormente cutánea. Se espera haber enriquecido el conocimiento de esta enfermedad en pacientes trasplantados.

Introduction: Histoplasma capsulatum infection frequently occurs in patients with HIV immunosuppression or in transplant recipients receiving immunosuppressive therapy. Primary infection is acquired by inhalation with pulmonary involvement, and may subsequently spread to other organs such as liver, intestines, heart, kidneys, skin or bone tissue. It is very rare in renal transplant patients, although it is common in lung transplantation. Objective: To present the case of a patient with a history of renal transplantation nine years earlier, who was admitted for presenting skin lesions not typical of histoplasmosis, developing disseminated histoplasmosis two weeks later, without pulmonary involvement. Clinical Case: Post-renal transplant male patient, aged 65, who developed cutaneous manifestations characterized by erythematous and scaly papules and plaques with crusty and atrophic surfaces, accompanied by persistent fever and lymphadenopathy. There were no pulmonary signs or symptoms of a primary infection. The definitive diagnosis was made by histopathology of skin and cervical nodes, in addition to the growth of H. capsulatum in specific blood cultures for fungi. The patient was treated with liposomal amphotericin B and later with itraconazole on an outpatient basis with favorable evolution. Conclusion: The case described is important since it does not resemble the typical presentation of this entity, that is, with primary pulmonary and subsequently cutaneous involvement. It is expected to have enriched the knowledge of this disease in transplanted patients.

Fístula arteriovenosa para hemodiálisis en receptores de trasplante renal. Su repercusión clínica, humoral y cardiovascular / Arteriovenous fistula for hemodialysis in renal transplant recipients. Clinical, humoral and cardiovascular repercussions

Introducción: La fístula arteriovenosa para hemodiálisis repercute negativamente sobre la hemodinamia, la morfología y las funciones cardíacas. Objetivo: Determinar la repercusión del cierre del acceso vascular sobre variables clínicas, humorales, morfológicas y funcionales del corazón derecho en receptores de trasplante renal. Material y Métodos: Estudio cuasi-experimental longitudinal que incluyó 92 pacientes divididos en dos grupos, experimental (n=46): con cierre del acceso vascular, y de comparación (n=46): sin cierre del angioacceso. Se determinaron variables clínicas, de laboratorio, y ecocardiográficas en dos tiempos: inicial y seis meses posteriores. Resultados: La media de edad en ambos grupos fue de 46,87 ±12,04 y 45,50 ±12,47 años respectivamente. Prevaleció el sexo masculino; 26 (56,52 %) y el color de piel blanca; 34 (73,91 %). Las palpitaciones fueron la manifestación clínica más frecuente con mejoría a la segunda observación en el grupo experimental, al igual que las presiones sistólica y diastólica, así como la creatinina sérica; de 108,24 ±24,53 a 100,00 ±22,35 μMol/L (p=0,004). Las variables mensuradas por ecocardiografía mejoraron en el grupo intervenido respecto al de comparación. Las diferencias final-inicial para las presiones sistólica y media de la arteria pulmonar mostraron relaciones muy significativas (p <0,001) para las fístulas localizadas en la muñeca y en el pliegue del codo izquierdos. Conclusiones: Las variables estudiadas mostraron cambios ostensibles en el grupo experimental respecto al de comparación posterior al cierre de la fístula arteriovenosa sin constatar asociación entre su localización y la severidad de la afectación cardíaca.

Introduction: Arteriovenous fistula for hemodialysis has a negative impact on hemodynamics, morphology, and cardiac functions. Objective: To determine the repercussion of vascular access closure on clinical, humoral, morphological and functional variables of the right heart in renal transplant recipients. Material and Methods: Quasi-experimental longitudinal study that included 92 patients divided into two groups: experimental (n=46): with vascular access closure, and comparison (n=46): those who did not have the angioaccess closed. Clinical, laboratory and echocardiographic variables were determined at two points in time: initial and six months later. Results: The mean age in both groups was 46.87 ±12.04 and 45.50 ±12.47 years, respectively. Male sex: 26 (56.52 %), as well as white skin color: 34 (73.91 %), prevailed in the study. Palpitations were the most frequent clinical manifestation with improvement at the second observation in the experimental group, as were systolic and diastolic pressures, as well as serum creatinine: from 108.24 ±24.53 to 100.00 ±22.35 μMol/L (p=0,004). The variables measured by echocardiography improved in the intervention group with respect to the comparison group. The final - initial differences for systolic and mean pulmonary artery pressures showed highly significant relationships (p<0.001) for fistulas located at the left wrist and elbow crease. Conclusions: The variables studied showed ostensible changes in the experimental group with respect to the comparison after closure of the arteriovenous fistula without finding an association between their location and the severity of cardiac involvement.

Supervivencia de pacientes trasplantados en relación con la compatibilidad inmunológica / Survival of transplant patients in relation to immunological compatibility

Introducción: El trasplante renal es uno de los métodos de sustitución de la función renal y tiene como factor de mayor influencia en su supervivencia, la compatibilidad inmunológica del sistema mayor. Objetivos: Definir la supervivencia del trasplante y su relación con el grado de compatibilidad. Métodos: Se realizó un estudio retrospectivo sobre el tiempo de supervivencia con base hospitalaria de los 512 trasplantes en el período comprendido entre los años 1993 y 2010, ambos incluidos con seguimiento y corte al concluir el año 2019. Se empleó el Kaplan Meier para calcular las supervivencias, se utilizó el paquete estadístico Statiscal Package Social Science (Spss) versión 22.0. Resultados: 397 pacientes recibieron riñones cadavéricos al momento del corte, 11,3 por ciento de los injertos estaban funcionando, mientras que para los 115 que recibieron de vivo, el 45,2 por ciento, p=0,000. La mediana de supervivencia para el cadavérico fue de 3,1 años (SD 2,4-3,8) y dentro de ellos los que compartieron tres o más antígenos lograron el doble de sobrevida, p=0,033. Para el de donante vivo, la mediana fue de 16,0 años (SD 9,1-22,9) y dentro de este grupo 104 pacientes que compartían un haplotipo lograron 44,2 por ciento de función, los hermanos que eran idénticos un 66,0 por ciento. Por parentesco los que recibieron riñones de hermanos tienen mejor supervivencias que de padres a hijos, p=0,001. Conclusiones: Se definió que la compatibilidad inmunológica del sistema mayor entre donante y receptor propicia diferencias en la función de los injertos(AU)

Introduction: Renal transplantation is one of the methods of renal function substitution and the main factor influencing survival is the immunological compatibility of the major system. Objectives: To define transplant survival and the relationship with the degree of compatibility. Methods: A retrospective study was carried out on the hospital-based survival time of 512 transplants from 1993 to 2010, including follow-up and the cut at the end of 2019. The Kaplan-Meier estimator was used to calculate the survivals, the statistical package Statistical Package Social Science (Spss) version 22.0 was used. Results: Three hundred ninety seven (397) patients received cadaveric kidneys at the cut, 11.3percent of the grafts were functioning, 115 received living grafts, 45.2percent p=0.000. The median survival for the cadaveric kidneys was 3.1 years (SD 2.4-3.8) and among them those who shared three or more antigens achieved twice the survival, p=0.033. For the living donor, the median was 16.0 years (SD 9.1-22.9) and within this group, 104 patients, sharing a haplotype, achieved 44.2percent function, siblings, who were identical, achieved 66 .0percent. By kinship, those who received kidneys from siblings have better survival than for those who received it from parents, p=0.001. Conclusions: Immunological compatibility of the major system between donor and recipient was defined to favor differences in the function of the grafts(AU)

COVID-19 associated with disseminated histoplasmosis in a kidney transplant patient / COVID-19 asociado a histoplasmosis diseminada en un paciente trasplantado renal

Abstract We report a case of disseminated histoplasmosis and COVID-19 infection in a renal transplant recipient in Argentina. The patient exhibited respiratory symptoms, and a chest computed tomography scan (CT) showed multiple bilateral centrilobular opacities with a tree-in-bud pattern in both lobes. The patient was initially treated as having bacterial community-acquired pneumonia, and then tuberculosis. A month later, histoplasmosis was diagnosed, and Histoplasma capsulatum LAmB clade was isolated from sputum, skin and oral lesions. The patient was hospitalized and treatment was started with intravenous liposomal amphotericin B. During the course of the antifungal therapy the respiratory symptoms worsened, a new chest CT showed a unilateral lesion with a ground glass appearance and SARS-CoV-2 was detected in a new nasopharyngeal sample. In addition, plasma therapy was administered, and the immunosuppressive regimen was adjusted (everolimus was interrupted, mycophenolate mofetil reduced, and meprednisone increased). Finally, the patient's progress was favorable and was discharged after five days on oral itraconazole treatment for histoplasmosis.

Resumen Se presenta un caso de histoplasmosis diseminada e infección por COVID-19 en un paciente trasplantado renal en Argentina. El paciente presentó un cuadro clínico respiratorio, y la tomografía computarizada (TC) de tórax mostró múltiples opacidades centrolobulillares bilaterales con patrón de árbol en brote. El paciente fue tratado inicialmente con antibióticos para agentes causantes de neumonía bacteriana adquirida en la comunidad y luego como tuberculosis. Un mes después se le diagnosticó una histoplasmosis diseminada y el hongo fue aislado del esputo, la piel y la mucosa oral. El hongo fue tipificado molecularmente como Histoplasma capsulatum clado LAmB. El paciente fue hospitalizado y se inició tratamiento con anfoteric-ina B liposomal vía intravenosa. Durante el transcurso de la terapia antifúngica los síntomas respiratorios del paciente empeoraron, una nueva TC de tórax mostró una lesión unilateral con apariencia de vidrio esmerilado y se detectó SARS-CoV-2 en el hisopado nasofaríngeo. El paciente fue tratado con plasmoterapia y se modificó el régimen de inmunosupresión (se interrumpió everolimus, se redujo micofenolato de mofetilo y se incrementó la meprednisona). La evolución del paciente fue favorable y fue dado de alta con tratamiento oral con itraconazol.

Procalcitonina sérica como marcador de la función del injerto en el postrasplante renal inmediato

Contexto la procalcitonina (PCT) podría ser útil en la evaluación de la función del injerto renal (IR) en el postrasplante inmediato, ya que sus niveles se incrementan posterior a la elevación de citocinas inflamatorias (IL-6, TNF-ß) durante eventos de disfunción renal. Objetivo determinar la asociación de la PCT sérica con la función del injerto renal en el periodo postrasplante inmediato. Metodología cohorte retrospectiva de septiembre del 2018 a abril del 2019 en la División de Nefrología y Trasplantes, del Centro Médico Nacional de Occidente (CMNO), del Instituto Mexicano del Seguro Social (IMSS). Se incluyeron 62 receptores de trasplante renal de donante vivo (DV) y fallecido (DF) con determinación de PCT antes del séptimo día del TR y el registro de eventos de disfunción temprana del injerto (DTI), comparados con pacientes sin DTI (sDTI). Resultados los receptores con DTI presentaron niveles más altos de PCT (13,90, 3,90, 1,22 ng/mL) comparado con el grupo sin DTI (0,32, 0,31 y 0,22 ng/ml) en los días 1, 3 y 5 respectivamente; p < 0,05. Conclusiones la PCT es un marcador biológico asociado a DTI en el postrasplante renal inmediato.

Background Procalcitonin (PCT) could be useful for evaluation of the renal allograft (RG) in the immediate post-transplant since its levels increase after elevation of the inflammatory cytokines (IL-6, TNF-ß) during events of renal failure. Purpose Our objective was to determine the association of serum PCT with the function of the RG in the immediate post-transplant. Methodology A retrospective cohort from September 2018- April 2019 in the National Western Medical Center of the Mexican Social Security Institute (IMSS), was performed. Sixty-two recipients of living donor (LD) and deceased donor (DD) renal transplant (RT) with PCT evaluation before the seventh days of RT were included; and, events of early renal allograft failure (EAF) were recorded and compared to patients no EAF (nEAF). Results The recipients with EAF presented with higher PCT levels (13.90, 3.90, 1.22 ng/mL) compared to the nEAF group (0.32, 0.31, and 0.22 ng/ml) on days 1, 3, and 5, respectively (p < 0.05). Conclusions The PCT is a biological marker associated with EAF in the immediate post-transplant.

Molecular characterization of BK virus detected in renal transplant patients in Sri Lanka: a preliminary study

Background & objectives: BK virus (BKV) is a polyomavirus and cause of a common infection after renal transplantation which could be preceded to BKV-associated nephropathy. It has four main subtypes (I–IV). BKV subtypes II and III are rare, whereas subtype I shows a ubiquitous distribution. The objective of the present study was to investigate the prevailing BKV subtypes and subgroups in renal transplant patients in Sri Lanka. Methods: The presence of BKV in urine was tested through virus load quantification by real-time PCR from 227 renal transplant patients who were suspected to have BKV infection. Of these patients only 41 were found to be BKV infected (>103copies/ml) and those were subjected to conventional PCR amplification of VP1 gene followed by BKV genotyping via phylogenetic analysis based on DNA sequencing data. Results: Persistent BK viral loads varied from 1×103 to 3×108 copies/ml. Of the 41 patient samples, 25 gave positive results for PCR amplification of subtyping region of VP1 gene of BKV. BKV genotyping resulted in detecting subtype I in 18 (72%) and subtype II in seven (28%) patients. BKV subgroups of Ia, Ib-1 and Ib-11, and Ic were identified with frequencies of 6/18 (33.3%), 6/18 (33.3%), 5/18 (27.8%), and 1/18 (5.6%), respectively. Interpretation & conclusions: Findings from this preliminary study showed a high occurrence of subtype I, while the presence of subtype II, which is rare and less prevalent, was a novel finding for this Asian region. This emphasizes the need for further molecular and serological studies to determine the prevalence of different BKV subtypes in Sri Lanka

Application of three-dimensional image reconstruction technology based on 3D-slicer software in urology / 国际外科学杂志

Objective:To investigate the application value of three-dimensional image reconstruction technology based on 3D-slicer software in urology.Methods:The data of 36 patients with urinary tract diseases admitted to Beijing Friendship Hospital, Capital Medical University from May 2019 to December 2021 were retrospectively analyzed, including 20 males and 16 females; the median age was 53.50(41.75, 66.25) years. There were 10 relative kidney transplant donors, 12 cases with renal tumors, 6 cases with hydronephrosis and 8 patients with urinary calculi. The CT urography data of 36 cases were reconstructed into three-dimensional image models based on 3D-slicer software, and the morphology of the target tissue was measured.Results:In the urinary system model of 10 relative kidney transplant donors constructed in this study, the type of donor renal artery was single artery in 7 cases and accessory renal artery in 3 cases; In the three-dimensional model of 12 tumor kidneys, 4 tumors were located at the upper part of the kidney (2 near ventral and 2 near dorsal), 5 tumors were located at the middle part of the kidney (2 near ventral and 3 near dorsal), and 3 tumors were located at the lower part of the kidney near ventral. The average maximum diameter of the tumors was (27.3 ± 9.63) mm, and the tumor volume was (15.89 ± 5.93) cm 2. The study also successfully constructed a three-dimensional image model of the urinary system in 6 patients with hydronephrosis and 8 patients with urinary calculi (without hydronephrosis). Three-dimensional model image reconstructed by 3D-slicer software clearly showed the spatial structure of renal parenchyma, blood vessels, renal pelvis, calyces and ureter. The diameter, position and direction of ureters and blood vessels can be observed clearly based on the three-dimensional reconstruction model, and clinicians could also evaluate the location, shape, size and adjacent relationship with surrounding tissues of renal cysts, tumors, stones or other masses. Conclusion:3D-slicer software platform can assist clinicians to reconstruct the three-dimensional model of urinary system, which is worthy of further clinical application.

Effects of Wuzhi capsules on tacrolimus concentration in renal transplant recipients with different CYP3A5 genotypes / 中华泌尿外科杂志

Objective:To study the effect of Wuzhi capsules on tacrolimus trough concentration in kidney transplant recipients with different CYP3A5 genotypes.Methods:From June 2015 to October 2019, 162 patients who underwent renal transplantation for the first time were retrospectively analyzed. The patients were divided into two groups, combined and uncombined, according to whether combined with Wuzhi capsules. There were 81 cases in the uncombined group (55 males and 26 females), and 81 in the combined group (62 males and 19 females). There was no significant difference between the two groups( P=0.219). The ages of the uncombined group and the combined group were (39.26±11.91) years old and (37.21±10.88) years old ( P=0.103), the weights were (62.39±11.64) kg and (66.18±13.89)kg ( P=0.298), systolic blood pressure were (147.28±20.24) mmHg and (145.00±16.42) mmHg (1 mmHg=0.133 kPa)( P=0.276), diastolic blood pressure were (92.25±13.87) mmHg and (92.20±12.53) mmHg ( P=0.886), alanine aminotransferase were (12.24±8.59) U/L and (17.06±13.11) U/L ( P=0.015), aspartate aminotransferase were (17.76±9.12) U/L and (16.57±8.37) U/L ( P=0.463), fasting blood glucose were (8.70±3.48) mmol/L and (7.18±2.74)mmol/L ( P=0.006), hemoglobin were (98.96±17.53) g/L and (101.05±18.67) g/L ( P=0.789), creatinine were (665.22±296.55) μmol/L and (797.32±279.32) μmol/L ( P=0.007), estimated glomerular filtration rate were (11.47±14.11) ml/(min·1.73m 2) and (8.85±3.71) ml/(min·1.73m 2) ( P=0.130)in the kidney transplant recipients before surgery. Among the 162 cases in this study, there were 86 cases (53.09%) of CYP3A5*1*3 genotype, 17 cases (10.49%) of CYP3A5*1*1 genotype, 59 cases (36.42%) of CYP3A5*3*3 genotype, and the minimum allele frequency of CYP3A5*1 was 37.04%. In the uncombined group, CYP3A5*1*3 genotype 39 cases (48.15%), CYP3A5*1*1 genotype 5 cases (6.17%), and CYP3A5*3*3 genotype 37 cases (45.68%). In the combined group, CYP3A5*1*3 genotype 47 cases (58.02%), CYP3A5*1*1 genotype 12 cases (14.81%), and CYP3A5*3*3 genotype 22 cases (27.16%), with statistically significant differences in the two groups ( P=0.024). The patients were treated with a triple immunosuppressive regimen (tacrolimus+ mycophenolate mofetil+ glucocorticoid) based on tacrolimus [initial dose: 0.15-0.30 mg/(kg·d)], combination of Wuzhi capsules in the combination group (11.25 mg, twice a day). The trough concentration of tacrolimus was detected by enzyme-linked immunosorbent assay, compare the difference in the trough concentration of tacrolimus between the two groups. The relationship between the effect of Wuzhi capsules and CYP3A5 gene polymorphism was compared, and compare the changes before and after the application of CYP3A5 genotype combined with Wuzhi Capsules. The influencing factors of tacrolimus trough concentration were analyzed by multiple linear regression. Results:In the combined with Wuzhi capsules, the dose corrected trough concentration (C 0/D) of tacrolimus was higher than that in patients without Wuzhi capsules, and the extent of increase was related to genotype. The C 0/D of tacrolimus in patients with CYP3A5*3*3 genotype in the combination and non-combination groups were (12.15±2.95) (ng·ml -1/0.1mg·kg -1·d -1) and (9.99±2.33) (ng·ml -1/0.1mg·kg -1·d -1) ( P=0.004), CYP3A5*1*3 genotype were (11.11±3.20) (ng·ml -1/0.1mg·kg -1·d -1) and (6.86±1.62) (ng·ml -1/0.1mg·kg -1·d -1) ( P<0.001), and there were significant difference. However, CYP3A5*1*1 genotype were(8.29±2.64) (ng·ml -1/0.1mg·kg -1·d -1) and (6.16±2.87) (ng·ml -1/0.1mg·kg -1·d -1) ( P=0.160), there was no significant difference. The tacrolimus C 0/D of the combined group before and after the Wuzhi capsule were as follows: CYP3A5*3*3 genotype: (7.18±2.33)(ng·ml -1/0.1mg·kg -1·d -1) and (13.33±3.09) (ng·ml -1/0.1mg·kg -1·d -1) ( P<0.001); CYP3A5*1*3 genotype: (5.14±2.14) (ng·ml -1/0.1mg·kg -1·d -1) and (10.61±3.20) (ng·ml -1/0.1mg·kg -1·d -1) ( P<0.001); CYP3A5*1*1 genotype: (5.17±3.75) (ng·ml -1/0.1mg·kg -1·d -1) and (8.31±2.74) (ng·ml -1/0.1mg·kg -1·d -1)( P=0.002), and the differences were statistically significant. The results of multiple linear regression showed that the combination of Wuzhi capsules (β=0.508, P<0.001) and CYP3A5 genotype(CYP3A5*1*3 and CYP3A5*3*3: β=-0.361, P<0.001; CYP3A5*1*1 and CYP3A5*3*3: β=-0.425, P<0.001)could influence the trough concentration. The sex (β=-0.100, P=0.124) and age (β=-0.003, P=0.967) of renal transplant recipients had no statistical significance to tacrolimus C 0/D. Conclusions:In the renal transplant patients, CYP3A5 genotype and combined use of Wuzhi capsules are the main factors affecting tacrolimus C 0/D. In order to achieve the expected trough concentration as soon as possible, the interaction between CYP3A5 genotypes and drug combination should be considered.

Factores de riesgo de fracturas no vertebrales en receptores de trasplante renal: ¿Una realidad compleja? / Risk factors for nonvertebral bone fractures in kidney transplant recipients: a complex reality?

RESUMEN Introducción: Las fracturas en el postrasplante renal representan una de las complicaciones que aumentan la morbimortalidad en los pacientes. Objetivo: Determinar los factores de riesgo de trasplante de fracturas no vertebrales en receptores de trasplante renal. Material y métodos: Se analizaron los datos de historias clínicas de 737 pacientes trasplantados renales desde 2009-2015, donde se evaluaron los factores de riesgo de fracturas. Se determinaron como factores generales: edad, sexo; y factores específicos: etiología de la enfermedad renal crónica (ERC), tiempo en diálisis, modalidad de diálisis, características del donante:edad, sexo, tipo de donante vivo y cadavérico (DV, DC), diferentes esquemas de inmunosupresión, rechazos, tratamiento con pulsos de esteroides, uso de bifosfonatos y analitos como parathormona intacta (PTHi), pro-vitamina D (25OHD) y creatininemia (Creats). Criterios de exclusión: pacientes <18 años, retrasplante o trasplantes dobles y menos de 1 año de seguimiento. Resultados: 44 pacientes presentaron 50 fracturas no vertebrales. El 62% de las fracturas se presentaron en los 3 primeros años del trasplante. En el modelo Multivariado se pudo observar que los factores de riesgo generales asociados con riesgo de fracturas fueron la edad avanzada del receptor (aHR por año aumenta 1,03, 95% CI: 1,00-1,05] y el sexo femenino (aHR= 1,60, 95% CI: 0,85-2,99), mientras que los factores de riesgo específicos fueron el tiempo en diálisis (1,07 IC95%:1,02- 1,12), la mayor edad del donante (1,03 IC95:1,00- 1,05) y el déficit de 25OHD (3,17 IC95:1,57- 6,41). Conclusiones: Este estudio permitió evaluar los factores predictivos de fractura en nuestros pacientes con trasplante renal.

ABSTRACT Introduction: Fractures in renal postransplantation represent one of the complications that increase morbidity and mortality in patients. Objective: To determine the risk factors for transplantation of non- vertebral fractures in renal transplant recipients. Methods: The data of clinical histories of 737 renal transplanted patients since 2009 2015 were analyzed, where the risk factors of fractures were evaluated. They were determined as general factors: age, sex; and specific factors: etiology of chronic kidney disease (ERC), dialysis time, dialysis modality, donor characteristics: age, sex, type of donor, living or cadaveric (DV, DC), different immunosuppression treatments, rejections, treatment with steroid pulses, use of bisphosphonates and biochemical parameters like intact parathormone (PTHI), Pro-Vitamin D (25OHD) and Creatininemia (CREATS). Exclusión criteria: patients <18 years, retransplantation or double transplants and follow- up less than 1 year. Results: 44 patients presented 50 non-vertebral fractures. 62% of the fractures were presented in the first 3 years of the transplant. In the multivariate model it was observed that the general risk factors associated with fracture risk were the advanced age of the receptor (aHR per year increases 1.03, 95% CI: 1.00-1.05] and the female sex (aHR = 1.60, 95% CI: 0.85-2.99), while the specific risk factors were dialysis time (1.07 IC95%: 1.02-1.12), the higher age of the donor (1.03 IC95: 1,00-1,05) and the deficit of 25OHD (3.17 IC95: 1.57-6.41). Conclusions: This study allowed to evaluate predictive factors of fracture in our patients with kidney transplantation.

Short- and mid- term impact of tobacco smoking on donor renal function following living kidney donation at a tertiary referral hospital

Background: The negative impact of tobacco smoking on renal function has been widely studied. However, there is limited knowledge about the effect of smoking on pre-operative and post-operative renal function in living kidney donors. Objective: The objective of the study was to evaluate the short- and mid-term impact of smoking on donor renal function. Methods: This is a retrospective study of 308 patients who underwent living donor nephrectomy (LDN) at a tertiary referral hospital. We compared baseline characteristics as well as functional outcomes following LDN according to history of tobacco smoking. Estimated glomerular filtration rate (eGFR) was calculated with the modification of diet in renal disease equation in 6 time periods: pre-operative, 1 week, 1 month, 6 months, 12 months, and 24 months after surgery. We performed a Kaplan-Meier analysis for chronic kidney disease (CKD) outcome and binary logistic regression analysis to identify risk factors associated with CKD at 24 months of follow-up. Results: Among donors, 106 (34.4%) reported a smoking history before nephrectomy. Smoking donors had worse pre-operative eGFR than non-smokers (90 ± 26.3 mL/min/1.73m2 vs. 96 ± 27 mL/min/1.73 m2, respectively; p = 0.02) and lower eGFR at 1 week (p = 0.01), 1 month (p ≤ 0.01), 6 months (p = 0.01), and 12 months (p = 0.01) after LDN. Tobacco smoking (OR 3.35, p ≤ 0.01) and age ≥ 40 years at donation (OR 6.59, p ≤ 0.01) were associated with post-operative development of CKD at 24 months after LDN. Conclusions: Living kidney donors with a tobacco smoking history had an increased risk of developing chronic kidney disease following nephrectomy. Smoking-cessation strategies should be implemented.

COVID-19 en pacientes trasplantados renales, en lista de espera y en evaluación para trasplante. Experiencia en un hospital público en Argentina / COVID-19 in renal transplant patients, on the waiting list and under evaluation for transplantation. Experience in a public hospital in Argentina

RESUMEN Objetivos: Evaluar frecuencia de hisopado, casos positivos y tasa de letalidad por SARS-CoV-2 en pacientes trasplantados, en lista de espera o en evaluación en un Hospital Público de la Argentina. Material y métodos: Se realizó un análisis retrospectivo de los pacientes de la unidad (trasplantados, en lista de espera o en evaluación para trasplante) hasta el 30 de septiembre de 2020. Se buscó en forma individualizada cada paciente en el SINTRA, en bases de datos de pacientes de una unidad de trasplante y en el sistema SISA, para buscar: realización de hisopados, porcentaje de positividad de los mismos, mortalidad general y aquella vinculada a SARS-CoV-2. Se consideró edad, sexo, tiempo en diálisis, condición de diabético, hipertensión y enfermedad pulmonar obstructiva crónica. Se realizó análisis estadístico mediante Student, Mann Whitney y Chi cuadrado según correspondiere. Resultados: Durante 2020, estuvieron en seguimiento, en la Unidad de Trasplante Renal, un total de 1513 pacientes entre trasplantados renales en seguimiento (n=515), pacientes en lista de espera renal (n= 413) y pacientes en evaluación para trasplante (n=585). Se registraron un total de 103 casos positivos de COVID-19, sobre 477 hisopados realizados (positividad del 32,51%). La tasa de letalidad global fue del 21,88%, variando según el paciente estuviera en lista de espera (22,73%), en evaluación de trasplante (30%) o trasplantado (35,48%). Estas diferencias no alcanzaron significación estadística. Conclusiones: Se presenta un análisis descriptivo de los efectos de la pandemia sobre nuestra población. Es importante notar que nuestro centro atiende un porcentaje elevado de pacientes de bajos recursos y un área geográfica extensa, por lo cual los resultados pueden haber sido sesgados por estas características. En nuestra población trasplantada se observó un incremento de 10 veces la letalidad observada en la población general. La presencia de un mayor grado de inmunosupresión y factores de riesgo (diabetes, edad, hipertensión) podrían explicar lo observado.

ABSTRACT Objectives: Assess frequency of swabbing, positive and lethality rate cases of SARS-CoV-2 in transplant patients on the waiting list or evaluation in a Public Hospital of Argentina. Methods: A retrospective analysis was carried out of the patients in the unit (transplanted, on the waiting list or under evaluation for transplantation) until September 30, 2020. Each patient was searched individually in the SINTRA, in databases of patients of a transplant unit and in the SISA system, to find: swabbing, percentage of tests positivity, general mortality and that related to SARS-CoV-2. Age, sex, time on dialysis, diabetic condition, hypertension and chronic obstructive pulmonary disease were considered. Statistical analysis was performed using Student, Mann Whitney and Chi square as appropriate. Results: During 2020, a total of 1,513 patients were under follow-up in the Kidney Transplant Unit, including kidney transplants under follow-up (n=515), patients on the renal waiting list (n=413) and patients under evaluation for transplantation (n=585). A total of 103 positive cases of COVID-19 were registered, out of 477 swabs performed (positivity of 32.51%). The overall case fatality rate was of the 21.88%, varying according to the patient was on the waiting list (22.73%) in transplant evaluation (30%) or transplanted (35.48%). These differences did not reach statistical significance. Conclusions: A descriptive analysis of the effects of the pandemic on our population is presented. It is important to note that our center cares for a high percentage of low-income patients and a large geographic area, so the results may have been biased by these characteristics. In our transplanted population, a 10-fold increase in mortality observed in the general population was observed. The presence of a higher degree of immunosuppression and risk factors (diabetes, age, hypertension) could explain what was observed.

Enfermedad de cambios mínimos como manifestación inicial de COVID-19 en paciente latinoamericano con trasplante renal / Minimal change disease as an initial clinical feature of COVID-19 infection in a Latin-American kidney transplant patient

RESUMEN COVID-19 tiene un espectro amplio de manifestaciones clínicas, se ha descrito lesión renal aguda con evidencia de necrosis tubular aguda y diversos tipos de podocitopatías. Se presenta el caso clínico de un paciente con trasplante renal y COVID-19 que debuta con lesión renal aguda y síndrome nefrótico. Proteína C-reactiva para síndrome respiratorio agudo severo 2 en hisopado nasal es positiva y en tejido renal es negativa. Biopsia renal reporta enfermedad de cambios mínimos. A la fecha es el primer reporte de esta podocitopatía asociada a COVID-19 en paciente con trasplante renal.

ABSTRACT COVID-19 disease is a systemic infection associated with renal damage leading to acute kidney injury with acute tubular necrosis and several types of podocytopathies. We report a clinical case in a kidney transplant patient diagnosed with COVID-19 disease, acute kidney injury and nephrotic syndrome. SARS-CoV 2 PCR results in nasal swab was positive and kidney was negative. Renal histopathologic findings described minimal change disease. So far, this case is the first clinical report of minimal change disease associated to COVID-19 in a kidney transplant patient.

Clinical characteristics of infection-induced central nervous system complications in renal transplant recipients / 中华器官移植杂志

Objective:To summarize the clinical characteristics of central nerve system (CNS) infection and grasp the necessity and possibility of early diagnosis and precise intervention of CNS infection after renal transplantation.Methods:This retrospective study enrolled consecutive recipients of renal transplantation with CNS infection after transplant between January 2000 and December 2020. Correlative factors for CNS infection after renal transplant were determined by comparing the clinical data between recipients with and without CNS infection. After screening 3, 199 consecutive renal transplant recipients, 12 patients with CNS infection post-transplant were identified and recruited. The median age-of-onset was 48.5 (23-65) years. And the median time to disease onset after transplant was 50.5(1-204) months. The most common symptoms of CNS infection after renal transplant included fever (75.00%), consciousness disorder (58.33%), headache (58.33%) and neck rigidity (41.67%).Results:Hepatitis B virus carrier and pulmonary infection were correlated with CNS infection after transplantation ( P<0.05). Nine patients failed to identify the pathogen and only received empirical anti-infective regimen. The outcomes were curing ( n=3) and death ( n=6). Metagenomic sequencing was performed for identifying the pathogen in three recipients and actively adjusting the anti-infective regimen. As a result, 2 were cured and 1 died. The overall mortality was 58.33%. The median time to death or curing from disease onset were 20(2-19) and 25(16-35) days respectively in surviving and non-surviving recipients. Conclusions:The progress of CNS infection after transplantation is rapid with a high mortality. HBV carrier and pulmonary infection are possible risk factors of CNS infection after renal transplantation. Early pathogenic identification and precise etiological intervention are vital for better clinical outcomes.

Influencia De Los Estilos De Afrontamiento Sobre La Satisfacción Vital De Pacientes En Tratamiento De Hemodiálisis Y Con Trasplante Renal / Influence Of Coping Styles On Vital Satisfaction Of Patients On Hemodialysis Treatment And Renal Transplantation

Resumen Objetivo : Investigar la relación entre estilos de afrontamiento y niveles de satisfacción vital de pacientes en tratamiento con hemodiálisis y de pacientes con trasplante renal. Material y métodos: Treinta y cuatro pacientes en hemodiálisis tomaron parte del estudio, además de veintiuno en trasplante renal y cincuenta que no padecían ninguna enfermedad crónica. Se les administró la Escala de Satisfacción con la Vida (SWLS) y el Cuestionario de Afrontamiento al Estrés (CAEPO). Se comprobó que existían diferencias significativas entre los grupos con las variables estudiadas y se examinó la capacidad predictiva de los estilos de afrontamiento sobre la satisfacción vital para cada uno de los grupos que tomaron parte en la investigación. Resultados: Los pacientes en hemodiálisis presentaron una satisfacción vital significativamente menor que los participantes del grupo control. No existió diferencia entre los grupos clínicos, ni entre el grupo de pacientes trasplantados, ni en el grupo control ecn lo que se refiere a la satisfacción vital. En términos generales, los estilos de afrontamiento activos evitativo. Conclusiones: La coexistencia de estilos de afrontamiento activos y evitativos, en los que un moderado nivel de negación es acompañado por actitudes predicen positivamente el nivel de satisfacción vital, pero la misma se incrementa en los pacientes con hemodiálisis si además existe algún tipo de estilo de afrontamiento optimistas, eleva el grado de satisfacción vital de los pacientes con injuria renal crónica en hemodiálisis.

Abstract Objective : To investigate the relationship between coping styles and levels of life satisfaction of patients undergoing hemodialysis and patients with renal transplantation. Methods: Thirty four patients on hemodialysis, twenty one patients with renal transplantation and fifty who did not suffer from any chronic disease took part in the study. They were administered a Life Satisfaction Scale and a Stress Coping Questionnaire. It was checked whether there were significant differences between the groups in the variables studied. Additionally, the predictive capacity of coping styles on life satisfaction for SV of each of the groups that participated in the research was examined. Results: Patients on the hemodialysis group have a significantly lower SV than the participants in the control group, there being no difference between the clinical groups or between the group of transplanted patients and the control group as regards the SV. In general terms, active EAs predict positively the level of SV; but SV increases for hemodialysis patients if there is also some type of avoidant AD. Conclusions: The coexistence of active and avoidance coping styles, in which a moderate level of denial is accompanied by optimistic attitudes, raises the degree of vital satisfaction of hemodialysis patients.

Supervivencia de los pacientes receptores de trasplante renal / Renal transplantation recipient patients survival

Resumen Introducción: El Hospital Regional de Alta Especialidad del Bajío inició sus funciones en 2007 para atender la demanda de salud de 5.8 millones de habitantes, cuenta con 184 camas y una unidad de trasplantes con 26 camas. En 2008 inició actividades el programa de trasplante renal. Objetivo: Presentar la supervivencia de los pacientes receptores de trasplante renal y del riñón injertado en el Hospital Regional de Alta Especialidad del Bajío, Guanajuato, México. Método: Estudio de cohorte retrospectivo en el que se incluyeron los trasplantes consecutivos realizados entre 2008 y 2016. El análisis estadístico se efectuó con el método de Kaplan-Meier. Resultados: Se analizaron 837 trasplantes. La supervivencia del injerto censurada para muerte con injerto funcional a uno y cinco años fue de 94.6 y 78.9 %. La supervivencia del paciente a uno y cinco años fue de 95.4 y 88.1 %. Conclusiones: El programa de trasplante renal constituye uno de los mejor establecidos en México, tanto por el número de trasplantes renales de donante fallecido realizados como por la supervivencia obtenida de paciente e injerto. Los datos indican que el programa de trasplante renal ha tenido un desarrollo sostenido.

Abstract Introduction: The Bajío High Specialty Regional Hospital started operating in 2007 to tackle the health demands of 5.8 million inhabitants. It has 184 beds and a transplant unit with 26 beds. In 2008, the renal transplant program launched activities. Objective: To describe the survival of kidney transplant receptor patients and of the grafted kidney at the Bajío High Specialty Regional Hospital. Methods: Retrospective cohort study, where consecutive transplants carried out between 2008 and 2016 were included. Statistical analysis was performed using the Kaplan-Meier method. Results: A total of 837 transplants were analyzed. Graft survival censored for death, with a functional graft at 1 and 5 years, was 94.6% and 78.9%. Patient survival at 1 and 5 years was 95.4% and 88.1%. Conclusions: The renal transplant program is one of the the best programs established in Mexico, both for the number of deceased-donor kidney transplants performed and for the patient and graft survival achieved. These data indicate that the renal transplant program has had a sustained development.

Two clinical cases of Novel coronavirus pneumonia (NCP) in renal transplant recipients / 中华器官移植杂志

Objective@#To explore the clinical features, diagnosis and prognosis of renal transplant recipients with NCP.@*Method@#The clinical data of 2 cases of kidney transplant recipients with NCP were retrospectively analyzed. Based onclinical manifestations, blood routine, inflammatory factors, cell immunity, chest CT andtherapeutic effects, the diagnosis and treatment of NCP in kidney transplant recipients (5th edition) were compared to that ofordinary NCP patients. Both recipients developed onset of low andmoderate fever, with no cough or fatigue at the initial stage. Blood routine indicated a normal range of leukocytes,buta significant decrease in lymphocyte counts, increased C-reactive protein (CRP) , and slightly higher procalcitonin (PCT) . The cellular immunity was extremely low, and the chest CT showed multiple patchy ground glass shadows in both lungs.@*Result@#After 1 week of onset, both patients had significant disease progression. The pathogenesis and imaging changes were highly similar tothatreported in ordinary NCP patients.Two patients were givensymptomatic supportive treatment by antiviral agents, stop uses ofimmunosuppression agents, small amount of hormone maintenance, intravenous drip of gamma globulin andrespiratory support toavoid secondary infections. At present, the condition of both patients is obviously improved, and renal function is stable. One of them has recovered and was discharged.@*Conclusion@#The clinical manifestations of NCP in renal transplant recipients were generally consistent with that of ordinary NCP patients. Although there is no established method for the treatment of NCP, it is effective by stopping uses of immunosuppressive agents, maintaining small and medium doses of hormones, actively restoring immunity, and providing respiratory support in a timely manner.