Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 167
Filtrar
Más filtros

Bases de datos
País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
World J Urol ; 42(1): 88, 2024 Feb 19.
Artículo en Inglés | MEDLINE | ID: mdl-38372802

RESUMEN

PURPOSE: To compare the diagnostic ability of traditional radiographic urethrography and magnetic resonance urethrography (MRU) for iatrogenic bladder outlet obliteration (BOO), and explore the efficacy and complications of laparoscopic modified Y-V plasty for patients selected based on MRU evaluation. METHODS: 31 patients with obliteration segments ≤ 2 cm and no false passages or diverticula based on MRU evaluation from eight centers in China were included. Obliteration segments were measured preoperatively by MRU and conventional RUG/VCUG and compared with intra-operative measurements. Surgical effects were evaluated by uroflow rates, urethrography, or cystoscopy at 1, 3, 6, and 12 months post-operation and then every 12 months. Postoperative urinary continence was assessed by 24-h urine leakage (g/day). RESULTS: The results showed that MRU measured the length of obliteration more accurately than RUG/VCUG (MRU 0.91 ± 0.23 cm, RUG/VCUG 1.72 ± 1.08 cm, Actual length 0.96 ± 0.36 cm, p < 0.001), and clearly detected false passages and diverticula. Laparoscopic Y-V plasty was modified by incisions at 5 and 7 o'clock positions and double-layer suture with barbed sutures. All operations were successfully completed within a median time of 75 (62-192) minutes and without any complications. Urethral patency and urinary continence rates were 90.3% (28/31) and 87.1% (27/31), respectively. Three recurrences were cured by direct visual internal urethrotomy. Four patients had stress urinary incontinence after catheter removal 14 days post-operation, with urine leakage of 80-120 g/day, not relieved during follow-up. CONCLUSIONS: Laparoscopic modified Y-V plasty based on MRU evaluation is a promising approach for iatrogenic BOO, with a high patency rate and a low incontinence rate.


Asunto(s)
Divertículo , Vejiga Urinaria , Humanos , China , Divertículo/cirugía , Espectroscopía de Resonancia Magnética , Enfermedad Iatrogénica
2.
Transpl Int ; 34(10): 1812-1823, 2021 10.
Artículo en Inglés | MEDLINE | ID: mdl-34152648

RESUMEN

In order to safely carry out organ donation transplants during the outbreak of coronavirus disease 2019 (COVID-19), we have formulated strict procedures in place for organ donation and transplantation. We retrospectively analyzed our transplantation work from January 20 to May 5, 2020, to discuss whether organ transplantation can be carried out safely during the epidemic period. From January 20 to May 5, 43 cases of donation were carried out in our hospital, and the utilization rate of liver, kidney, heart, lung, and pancreas donations was more than 90%. Forty-one cases of liver transplantation and 84 cases of kidney transplantation were performed. No graft loss or recipient death occurred within one month after kidney transplantation, and one patient (2.4%) died after liver transplantation. There was no significant difference in the length of hospital stay compared with that during the same period in the previous three years. More importantly, COVID-19 infection did not occur among healthcare providers, donors, patients, or their accompanying families in our center. Under the premise of correct protection, it is safe and feasible to carry out organ transplantation during the epidemic period. Our experience during the outbreak might provide a clinical reference for countries facing COVID-19 worldwide.


Asunto(s)
COVID-19 , Epidemias , Trasplante de Órganos , Obtención de Tejidos y Órganos , Humanos , Estudios Retrospectivos , SARS-CoV-2 , Donantes de Tejidos
3.
Med Sci Monit ; 25: 3041-3060, 2019 Apr 25.
Artículo en Inglés | MEDLINE | ID: mdl-31020952

RESUMEN

BACKGROUND Bladder cancer is a multifactorial disease with increasing incidence and mortality. Genetic alterations and altered expressions of mRNAs, long non-coding RNAs (lncRNAs), and miRNAs have been shown to play important roles in the tumorigenesis of bladder cancer. However, the functions of key RNAs and their regulatory network in bladder cancer are still to be elucidated. MATERIAL AND METHODS RNA profiles were downloaded from The Cancer Genome Atlas (TCGA) database. The differentially expressed mRNAs, lncRNAs, and miRNAs in bladder cancer were acquired through analyses of data from 414 bladder cancer tissues and 19 normal bladder tissues. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analysis was performed by using "DAVID6.8" and the R package "ClusterProfile". Protein-protein interaction and competing endogenous RNA (ceRNA) networks were constructed by using "STRING" database and Cytoscape 3.6.2. Based on the clinical data and Cox regression, a prognosis model was established, and survival analysis was performed. RESULTS A total of 1819 mRNAs, 659 lncRNAs, and 160 miRNAs were identified as significantly differentially expressed in bladder cancer of which 52 mRNAs, 58 lncRNAs, and 22 miRNAs were incorporated in the ceRNA network. CFL2 and TPM2 were found to be downregulated and showed significant correlation to each other in bladder cancer. HOXB5 and 6 lncRNAs (ADAMTS9-AS1, AC112721.1, LINC00460, AC110491.1, LINC00163, and HCG22) were strongly associated with high-grade, disease stages, and overall survival. CONCLUSIONS In this study, we have identified differentially expressed mRNAs, lncRNAs, and miRNAs in bladder cancer which were strongly associated with oncogenesis and prognosis. Further experimental studies are necessary to validate these results.


Asunto(s)
ARN Mensajero/biosíntesis , ARN Neoplásico/biosíntesis , Neoplasias de la Vejiga Urinaria/genética , Bases de Datos Genéticas , Ontología de Genes , Redes Reguladoras de Genes , Humanos , Estimación de Kaplan-Meier , MicroARNs/genética , Pronóstico , ARN Largo no Codificante/genética , ARN Mensajero/genética , ARN Mensajero/metabolismo , ARN Neoplásico/genética , Análisis de Supervivencia , Neoplasias de la Vejiga Urinaria/metabolismo
4.
Am J Transplant ; 18(3): 737-744, 2018 03.
Artículo en Inglés | MEDLINE | ID: mdl-29127685

RESUMEN

Ischemia and reperfusion injury (IRI) is an inevitable event in conventional organ transplant procedure and is associated with significant mortality and morbidity post-transplantation. We hypothesize that IRI is avoidable if the blood supply for the organ is not stopped, thus resulting in optimal transplant outcomes. Here we described the first case of a novel procedure called ischemia-free organ transplantation (IFOT) for patients with end-stage liver disease. The liver graft with severe macrovesicular steatosis was donated from a 25-year-old man. The recipient was a 51-year-old man with decompensated liver cirrhosis and hepatocellular carcinoma. The graft was procured, preserved, and implanted under continuous normothermic machine perfusion. The recipient did not suffer post-reperfusion syndrome or vasoplegia after revascularization of the allograft. The liver function test and histological study revealed minimal hepatocyte, biliary epithelium and vascular endothelium injury during preservation and post-transplantation. The inflammatory cytokine levels were much lower in IFOT than those in conventional procedure. Key pathways involved in IRI were not activated after allograft revascularization. No rejection, or vascular or biliary complications occurred. The patient was discharged on day 18 post-transplantation. This marks the first case of IFOT in humans, offering opportunities to optimize transplant outcomes and maximize donor organ utilization.


Asunto(s)
Carcinoma Hepatocelular/cirugía , Isquemia , Cirrosis Hepática/cirugía , Trasplante de Hígado/métodos , Preservación de Órganos , Daño por Reperfusión/prevención & control , Obtención de Tejidos y Órganos/métodos , Adulto , Humanos , Neoplasias Hepáticas/cirugía , Masculino , Persona de Mediana Edad , Perfusión , Pronóstico , Donantes de Tejidos/provisión & distribución
5.
J Hepatol ; 69(5): 1037-1046, 2018 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-30031886

RESUMEN

BACKGROUND & AIMS: Radical resection is the best treatment for patients with advanced hepatic alveolar echinococcosis (AE). Liver transplantation is considered for selected advanced cases; however, a shortage of organ donors and the risk of postoperative recurrence are major challenges. The aim of this study was to assess the clinical outcomes of ex vivo liver resection and autotransplantation for end-stage AE. METHODS: In this prospective study, 69 consecutive patients with end-stage hepatic AE were treated with ex vivo resection and liver autotransplantation between January 2010 and February 2017. The feasibility, safety and long-term clinical outcome of this technique were assessed. RESULTS: Ex vivo extended hepatectomy with autotransplantation was successful in all patients without intraoperative mortality. The median weight of the graft and AE lesion were 850 (370-1,600) g and 1,650 (375-5,000) g, respectively. The median duration of the operation and anhepatic phase were 15.9 (8-24) h and 360 (104-879) min, respectively. Six patients did not need any blood transfusion. Complications higher than IIIa according to Clavien classification were observed in 10 patients. The 30-day-mortality and overall mortality (>90 days) were 7.24% (5/69) and 11.5% (8/69), respectively. The mean hospital stay was 34.5 (12-128) days. Patients were followed-up systematically for a median of 22.5 months (14-89) without recurrence. CONCLUSION: This is the largest series assessing ex vivo liver resection and autotransplantation in end-stage hepatic AE. This technique could be an effective alternative to liver transplantation in patients with end-stage hepatic AE, with the advantage that it does not require an organ nor immunosuppressive agents. LAY SUMMARY: Ex vivo liver resection and autotransplantation were performed in a large series of patients with end-stage hepatic alveolar echinococcosis. The results showed that this surgical option was feasible, with acceptable postoperative mortality, but 100% disease-free survival in survivors. Careful patient selection, as well as precise assessment for size and quality of the remnant liver are key to successful surgery.


Asunto(s)
Equinococosis Hepática/cirugía , Hepatectomía/métodos , Trasplante de Hígado/métodos , Adolescente , Adulto , Femenino , Hepatectomía/efectos adversos , Humanos , Trasplante de Hígado/efectos adversos , Masculino , Persona de Mediana Edad , Trasplante Autólogo , Trasplante Homólogo , Adulto Joven
6.
Cell Physiol Biochem ; 41(6): 2399-2410, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28463831

RESUMEN

BACKGROUND: LncRNA ROR, a tumor oncogene associated with various human cancers, has been reported to be involved in regulating various cellular processes, such as proliferation, apoptosis and invasion through targeting multiple genes. However, the molecular biological function in bladder cancer has not been clearly elucidated. The aim of this study is to explore ROR expression levels and evaluated its function in bladder cancer. METHODS: LncRNA ROR expression levels in the 36 pairs of bladder cancer tissues (and corresponding non-tumor tissues) and bladder cancer cells were assessed by qRT-PCR. MTT assay, colony formation assay, flow cytometric analysis, wound healing assay, cell transwell assays, attachment/detachment and western blotting were performed to assess the effects of ROR on proliferation, apoptosis, migration/invasion and epithelial-to-mesenchymal (EMT) phenotypes in BC cells in vitro. ZEB1 is target of ROR. Rescue assays were performed to further confirm that ROR contributes to the progression of BC cells through targeting ZEB1. RESULTS: LncRNA ROR was up-regulated in bladder cancer tissues (compared to adjacent non-tumor tissues) and was almost overexpression in bladder cancer cells (compared with normal urothelial cell line SVHUC-1 cells). Increased lncRNA ROR expression significantly promoted tumor cells proliferation, inhibited cells apoptosis, facilitated cells metastasis and contributed to the formation of EMT phenotype. While down-regulated ROR could obviously inhibit cells proliferation, promote cells apoptosis, inhibit metastasis and reverse EMT to MET. ZEB1 was a target gene of ROR and was positive correlation with the level of ROR in cancer tissues. CONCLUSION: These results indicated that lncRNA ROR was associated with tumor progression in bladder cancer cells.


Asunto(s)
Transición Epitelial-Mesenquimal/fisiología , ARN Largo no Codificante/metabolismo , Neoplasias de la Vejiga Urinaria/fisiopatología , Anciano , Cadherinas/metabolismo , Línea Celular Tumoral , Movimiento Celular , Proliferación Celular , Supervivencia Celular , Femenino , Humanos , Masculino , Persona de Mediana Edad , Interferencia de ARN , ARN Largo no Codificante/antagonistas & inhibidores , ARN Largo no Codificante/genética , ARN Interferente Pequeño/metabolismo , Regulación hacia Arriba , Neoplasias de la Vejiga Urinaria/genética , Neoplasias de la Vejiga Urinaria/metabolismo , Homeobox 1 de Unión a la E-Box con Dedos de Zinc/genética , Homeobox 1 de Unión a la E-Box con Dedos de Zinc/metabolismo , beta Catenina/metabolismo
7.
Med Sci Monit ; 23: 3161-3167, 2017 Jun 28.
Artículo en Inglés | MEDLINE | ID: mdl-28655867

RESUMEN

BACKGROUND Fluorescence in situ hybridization (FISH) is used widely to detect cancer levels, but its value in urothelial carcinoma remains unclear. The aim of this study was to use FISH to examine the urine specimens of low-grade urothelial carcinoma (UC) patients to determine the possibility of sub-classifying the prognosis of UC. MATERIAL AND METHODS We diagnosed 107 patients with low-grade UC using a UroVysion kit to detect chromosomes 3, 7, 17, and P16 in the urine. An average 46.6-month follow-up completed in January 2016 combined with the clinical follow-up data were evaluated with Spearman's correlation analysis to analyze the aberration of chromosomes in relation to the prognostication. Univariate and multivariate analysis using the Mantel-Cox log-rank test for overall, cancer-specific, and disease-free survival were used to determine the prognostic significance of CSP7/CSP17 and CSP3/GLPp16. RESULTS In the 107 samples, 84 showed positive reaction in the FISH test. Furthermore, CSP7/CSP17 was found to be significantly related with age, tumor size, T stage, and tumor numbers, but not in CSP3/GLPp16. In addition, Kaplan-Meier analysis and Cox proportional hazards regression revealed a significant negative correlation between CSP7/CSP17 and survival, while CSP3/GLPp16 showed no significantly differences. CONCLUSIONS CSP7/CSP17 positivity on FISH test appears to play a critical role in low-grade UC and may be considered as a high-risk and prognosis factor.


Asunto(s)
Hibridación Fluorescente in Situ , Neoplasias de la Vejiga Urinaria/diagnóstico , Urotelio/patología , Adulto , Anciano , Anciano de 80 o más Años , Supervivencia sin Enfermedad , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Clasificación del Tumor , Pronóstico , Modelos de Riesgos Proporcionales , Factores de Riesgo , Neoplasias de la Vejiga Urinaria/patología
8.
Liver Transpl ; 21(4): 419-22, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25545626

RESUMEN

Organ donation and transplant systems have unique characteristics based on the local culture and socioeconomic context. China's transplant and organ donation systems developed without regulatory oversight until 2006 when regulation and policy were developed and then implemented over the next several years. Most recently, the pilot project of establishing a voluntary citizen-based deceased donor program was established. The pilot program addressed the legal, financial, and cultural barriers to organ donation in China. The pilot program has evolved into a national program. Significantly, it established a uniquely Chinese donor classification system. The Chinese donor classification system recognizes donation after brain death (category I), donation after circulatory death (category II), and donation after brain death followed by circulatory death (category III). Through August 2014, the system has identified 2326 donors and provided 6416 organs that have been allocated though a transparent organ allocation system. The estimated number of donors in 2014 is 1147. As China's attitudes toward organ donation have matured and evolved and as China, as a nation, is taking its place on the world stage, it is recognizing that its past practice of using organs from executed prisoners is not sustainable. It is time to recognize that the efforts to regulate transplantation and provide voluntary citizen-based deceased organ donation have been successful and that China should use this system to provide organs for all transplants in every province and hospital in China. At the national organ transplant congress on October 30, 2014, the Chairman of the China's national organ donation and transplantation committee, Jeifu Huang required all hospitals to stop using organs from executed prisoners immediately and the civilian organ donation will be sole source for organ transplant in China starting January 2015.


Asunto(s)
Pueblo Asiatico/psicología , Características Culturales , Donaciones , Conductas Relacionadas con la Salud/etnología , Conocimientos, Actitudes y Práctica en Salud/etnología , Control Social Formal , Donantes de Tejidos/psicología , Obtención de Tejidos y Órganos , Volición , Altruismo , China/epidemiología , Humanos , Opinión Pública , Donantes de Tejidos/legislación & jurisprudencia , Obtención de Tejidos y Órganos/legislación & jurisprudencia
9.
Ann Surg Oncol ; 22(4): 1301-7, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25294018

RESUMEN

BACKGROUND: Available tools in liver surgery planning rely on the future remnant liver (FRL) volume. Inappropriate decision might be made since the same FRL volume might represent different liver functions depending on the severity of underlying liver damage. This study developed an alternative system to estimate FRL function and to predict the risk of postoperative liver failure. METHODS: Current study recruited 71 prehepatectomy patients and 71 healthy volunteers. A technetium-99-labelled asialoglycoproteins was given to participants and SPECT was used to capture the intensity of the signal, represented by uptake index (UI). The agreement between preoperative UI values, liver function tests, and Child scores were evaluated. Linear regression was used to evaluate the agreement between predicted UI for FRL and postoperative UI values. Area under the receiver operating characteristic (AUC) curve was used to evaluate the discriminative performance of UI in differentiating patient with high risk of liver failure. RESULTS: Preoperative UIs are highly correlated with Child score (P < 0.0001), especially to identify patients with ascites and elevated bilirubin. The predicted UIs were in close agreement with the actual postoperative UI values (r = 0.95 P < 0.001). The AUC analysis indicated that UI values had a high accuracy in predicting the risk of liver failure (AUC = 0.95, P < 0.0001). The best cut-off point was 0.9 and the corresponding sensitivity was 100 % and specificity was 92 %. CONCLUSIONS: The new methodology reliably estimates FRL function and predicts the risk of liver failure. It provides a visual aid for liver surgeon in surgery planning and risk assessment.


Asunto(s)
Hepatectomía , Fallo Hepático/diagnóstico por imagen , Neoplasias Hepáticas/diagnóstico por imagen , Hígado/diagnóstico por imagen , Hígado/patología , Agregado de Albúmina Marcado con Tecnecio Tc 99m/farmacocinética , Pentetato de Tecnecio Tc 99m/farmacocinética , Tomografía Computarizada de Emisión de Fotón Único , Tomografía Computarizada por Rayos X , Adulto , Anciano , Estudios de Casos y Controles , Femenino , Estudios de Seguimiento , Voluntarios Sanos , Humanos , Fallo Hepático/patología , Pruebas de Función Hepática/métodos , Neoplasias Hepáticas/patología , Neoplasias Hepáticas/cirugía , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Periodo Posoperatorio , Pronóstico , Curva ROC , Radiofármacos/farmacocinética , Distribución Tisular , Adulto Joven
10.
J Hepatol ; 61(4): 840-9, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-24859455

RESUMEN

BACKGROUND & AIMS: The differentiation of distinct multifocal hepatocellular carcinoma (HCC): multicentric disease vs. intrahepatic metastases, in which the management and prognosis varies substantively, remains problematic. We aim to stratify multifocal HCC and identify novel diagnostic and prognostic biomarkers by performing whole genome and transcriptome sequencing, as part of a multi-omics strategy. METHODS: A complete collection of tumour and somatic specimens (intrahepatic HCC lesions, matched non-cancerous liver tissue and blood) were obtained from representative patients with multifocal HCC exhibiting two distinct postsurgical courses. Whole-genome and transcriptome sequencing with genotyping were performed for each tissue specimen to contrast genomic alterations, including hepatitis B virus integrations, somatic mutations, copy number variations, and structural variations. We then constructed a phylogenetic tree to visualise individual tumour evolution and performed functional enrichment analyses on select differentially expressed genes to elucidate biological processes involved in multifocal HCC development. Multi-omics data were integrated with detailed clinicopathological information to identify HCC biomarkers, which were further validated using a large cohort of HCC patients (n = 174). RESULTS: The multi-omics profiling and tumour biomarkers could successfully distinguish the two multifocal HCC types, while accurately predicting clonality and aggressiveness. The dual-specificity protein kinase TTK, which is a key mitotic checkpoint regulator with links to p53 signaling, was further shown to be a promising overall prognostic marker for HCC in the large patient cohort. CONCLUSIONS: Comprehensive multi-omics characterisation of multifocal tumour evolution may improve clinical decision-making, facilitate personalised medicine, and expedite identification of novel biomarkers and therapeutic targets in HCC.


Asunto(s)
Carcinoma Hepatocelular , Proteínas de Ciclo Celular/genética , Virus de la Hepatitis B/genética , Neoplasias Hepáticas , Hígado/patología , Proteínas Serina-Treonina Quinasas/genética , Proteínas Tirosina Quinasas/genética , Adulto , Biomarcadores de Tumor/genética , Carcinoma Hepatocelular/etiología , Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/patología , Carcinoma Hepatocelular/cirugía , Variaciones en el Número de Copia de ADN , Diagnóstico Diferencial , Femenino , Regulación Neoplásica de la Expresión Génica , Estudio de Asociación del Genoma Completo , Hepatectomía/métodos , Hepatitis B/complicaciones , Hepatitis B/diagnóstico , Hepatitis B/genética , Humanos , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/patología , Neoplasias Hepáticas/cirugía , Masculino , Persona de Mediana Edad , Pronóstico , Integración Viral
11.
Arthritis Rheum ; 65(5): 1181-93, 2013 May.
Artículo en Inglés | MEDLINE | ID: mdl-23400582

RESUMEN

OBJECTIVE: Current approaches offer no cures for rheumatoid arthritis (RA). Accumulating evidence has revealed that manipulation of bone marrow-derived mesenchymal stem cells (BM-MSCs) may have the potential to control or even prevent RA, but BM-MSC-based therapy faces many challenges, such as limited cell availability and reduced clinical feasibility. This study in mice with established collagen-induced arthritis (CIA) was undertaken to determine whether substitution of human gingiva-derived mesenchymal stem cells (G-MSCs) would significantly improve the therapeutic effects. METHODS: CIA was induced in DBA/1J mice by immunization with type II collagen and Freund's complete adjuvant. G-MSCs were injected intravenously into the mice on day 14 after immunization. In some experiments, intraperitoneal injection of PC61 (anti-CD25 antibody) was used to deplete Treg cells in arthritic mice. RESULTS: Infusion of G-MSCs in DBA/1J mice with CIA significantly reduced the severity of arthritis, decreased the histopathology scores, and down-regulated the production of inflammatory cytokines (interferon-γ and interleukin-17A). Infusion of G-MSCs also resulted in increased levels of CD4+CD39+FoxP3+ cells in arthritic mice. These increases were noted early after infusion in the spleens and lymph nodes, and later after infusion in the synovial fluid. The FoxP3+ Treg cells that were increased in frequency mainly consisted of Helios-negative cells. When Treg cells were depleted, infusion of G-MSCs partially interfered with the progression of CIA. Pretreatment of G-MSCs with a CD39 or CD73 inhibitor significantly reversed the protective effect of G-MSCs on CIA. CONCLUSION: The role of G-MSCs in controlling the development and severity of CIA mostly depends on CD39/CD73 signals and partially depends on the induction of CD4+CD39+FoxP3+ Treg cells. G-MSCs provide a promising approach for the treatment of autoimmune diseases.


Asunto(s)
Artritis Experimental/terapia , Trasplante de Células Madre Mesenquimatosas , Células Madre Mesenquimatosas/citología , Linfocitos T Reguladores/citología , Células TH1/citología , Células Th17/citología , 5'-Nucleotidasa/inmunología , Animales , Antígenos CD/inmunología , Apirasa/inmunología , Artritis Experimental/inmunología , Artritis Experimental/patología , Diferenciación Celular , Femenino , Proteínas Ligadas a GPI/inmunología , Encía/citología , Humanos , Inmunoterapia Adoptiva , Ratones , Ratones Endogámicos DBA , Transducción de Señal , Linfocitos T Reguladores/inmunología , Células TH1/inmunología , Células Th17/inmunología
12.
J Gastroenterol Hepatol ; 29(3): 597-602, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-24236824

RESUMEN

BACKGROUND AND AIM: This study aimed to evaluate the effectiveness of serum Golgi protein 73 (GP73) and Glypican-3 (GPC-3) as tumor markers for diagnosis of hepatocellular carcinoma (HCC). METHODS: A total of 257 subjects were enrolled and consisted of 61 healthy controls, 32 hepatitis B virus carriers, 80 cirrhosis patients, and 84 HCC patients. Diagnosis was performed based on established clinical procedure. Serum GP73, GPC-3, and α-fetoprotein were measured. Receiving operating characteristic (ROC) curves were plotted to determine the sensitivity and specificity of each serum marker and their combinations. RESULT: Serum GP73 levels were significantly increased in HCC patients. No significant differences were observed between GP73 and α-fetoprotein (AFP) as markers for HCC diagnosis. However, GP73 was more sensitive than AFP in the diagnosis of small HCC. A combination of GP73 and AFP tests increased the sensitivity and specificity for HCC diagnosis. The area under the ROC curve (AUC) of combined test was 0.93 compared with 0.88 for GP73 and 0.90 for AFP alone. GPC-3 tests were negative in all 84 HCC patients. The AUC for GPC-3 is 0.43, indicating that serum GPC-3 was not an effective tumor marker for HCC diagnosis. CONCLUSION: Serum GP73 is a potential tumor marker for HCC diagnosis, especially for differential diagnosis of small HCC and cirrhosis. The combination of GP73 and AFP is more sensitive than AFP alone. Serum GPC-3 does not appear to be an effective tumor marker for HCC diagnosis.


Asunto(s)
Biomarcadores de Tumor/sangre , Carcinoma Hepatocelular/diagnóstico , Glipicanos/sangre , Neoplasias Hepáticas/diagnóstico , Proteínas de la Membrana/sangre , alfa-Fetoproteínas/análisis , Adulto , Anciano , Carcinoma Hepatocelular/patología , Diagnóstico Diferencial , Femenino , Humanos , Neoplasias Hepáticas/patología , Masculino , Persona de Mediana Edad , Curva ROC , Sensibilidad y Especificidad
14.
Lancet ; 379(9818): 862-5, 2012 Mar 03.
Artículo en Inglés | MEDLINE | ID: mdl-22078722

RESUMEN

China's aims are to develop an ethical and sustainable organ transplantation system for the Chinese people and to be accepted as a responsible member of the international transplantation community. In 2007, China implemented the Regulation on Human Organ Transplantation, which was the first step towards the establishment of a voluntary organ donation system. Although progress has been made, several ethical and legal issues associated with transplantation in China remain, including the use of organs from executed prisoners, organ scarcity, the illegal organ trade, and transplantation tourism. In this Health Policy article we outline the standards used to define cardiac death in China and a legal and procedural framework for an organ donation system based on voluntary donation after cardiac death that adheres to both China's social and cultural principles and international transplantation standards.


Asunto(s)
Pena de Muerte , Muerte , Política de Salud , Consentimiento Informado , Donadores Vivos , Trasplante de Órganos , Prisioneros , Obtención de Tejidos y Órganos , Comités Consultivos , Muerte Encefálica , China , Características Culturales , Política de Salud/legislación & jurisprudencia , Política de Salud/tendencias , Humanos , Cooperación Internacional , Turismo Médico/ética , Turismo Médico/tendencias , Trasplante de Órganos/ética , Trasplante de Órganos/legislación & jurisprudencia , Trasplante de Órganos/tendencias , Proyectos Piloto , Obtención de Tejidos y Órganos/ética , Obtención de Tejidos y Órganos/legislación & jurisprudencia , Obtención de Tejidos y Órganos/tendencias
15.
Urol Int ; 91(3): 320-5, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-24089026

RESUMEN

OBJECTIVE: To compare operative time, safety and effectiveness of minimally invasive percutaneous nephrolithotomy (MPCNL) in the supine lithotomy versus prone position. METHODS: Between January 2008 and December 2010, a total of 109 consecutive patients with upper urinary tract calculi were enrolled and randomly divided into group A (53 patients, supine lithotomy position) and group B (56 patients, prone position). The MPCNL procedures were performed under the guidance of real-time grayscale ultrasound system. The preoperative characteristics, intraoperative and postoperative parameters were analyzed and compared. RESULTS: All patients were successfully operated. There was no significant difference between the two groups in stone-free rate (group A 90.1 vs. group B 87.5%, p = 0.45), mean blood loss, number of access tracts, calyx puncture, mean hospital stay (group A 6 ± 1.1 vs. group B 6 ± 1.5 days, p = 0.38) and complications. But the operative time was significantly shortened in supine lithotomy position (group A 56 ± 15 vs. group B 86 ± 23 min, p < 0.001). CONCLUSIONS: The effectiveness and safety of the supine lithotomy position for MPCNL were similar to the prone position. However, the supine lithotomy position has an important advantage of reducing the operative time. The supine lithotomy position could be a good choice to perform MPCNL.


Asunto(s)
Cálculos Renales/cirugía , Cálices Renales/cirugía , Nefrostomía Percutánea/métodos , Posición Prona , Posición Supina , Sistema Urinario/cirugía , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Tempo Operativo , Periodo Posoperatorio , Reproducibilidad de los Resultados , Resultado del Tratamiento , Ultrasonografía
16.
Chin J Cancer Res ; 25(4): 382-8, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23997524

RESUMEN

OBJECTIVE: We examined 103 cases over the last five years and discussed diagnosis and treatment of alpha-fetoprotein (AFP)-negative small hepatic lesions. BACKGROUND: Small hepatic lesions (less than 2 cm in diameter) usually have no typical imaging characteristics and therefore are difficult to diagnose, especially when AFP tests provide a negative result. METHODS: A total of 103 patients with AFP-negative small hepatic lesions from January 2003 to December 2008 were retrospectively reviewed. Differential diagnosis was performed by digital subtraction angiography (DSA), dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), contrast-enhanced ultrasound (CEUS), or positron emission tomography-computed tomography (PET-CT) based on the multiplicity of lesions. Ninety-four patients with suspected cancers underwent partial hepatectomy. Clinical data were collected from hospital records and follow-up questionnaires. RESULTS: Hepatocellular carcinoma (HCC) diagnostic sensitivity of DSA, DCE-MRI, CEUS and PET-CT was 88.2%, 93.9%, 88.9% and 88.9%, respectively. The surgery-related complication rate was 6.4%. Prognosis was good, with 1- and 3-year survival rates of 98.8% and 76.1%, respectively. CONCLUSIONS: DSA, DCE-MRI, CEUS and PET-CT are valuable for diagnosis of small hepatic lesions. Partial hepatectomy is a preferred surgical procedure. Surgery for small liver cancers usually has little risk and good prognosis, therefore it can be actively applied in suspected HCC cases.

18.
Urol Int ; 89(3): 319-25, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-22922447

RESUMEN

OBJECTIVE: To investigate the relationship between surgeon's experience, tumor characteristics, absent detrusor muscle (DM) tissue in resected specimens, and residual tumor after an initial transurethral resection. PATIENTS AND METHODS: We conducted an analysis of 216 patients from two centers over a 3-year period. Patients with primary bladder tumors that were judged to have been completely resected were recruited. The data included tumor characteristics, surgeon category, and DM status. Logistic regression multivariate analyses were conducted. RESULTS: Large tumors, lateral/dome/anterior wall tumors, and surgery performed by junior surgeons were independently associated with absent DM. Large tumors, dome/anterior wall tumors, T1 and absent DM were independently associated with residual disease. The absence and presence of the DM were associated with residual tumor rates of 51.8 and 20.9%, respectively (OR 15.537). Resection by senior surgeons was associated with the presence of DM and clean resection (OR 0.274 and 0.141, respectively). CONCLUSIONS: Absent DM and residual tumor were more likely to occur in cases involving large tumors that were located in the lateral/dome/anterior wall, especially when the surgery was performed by a junior surgeon. Absent DM appears to be a surrogate marker for residual disease.


Asunto(s)
Músculo Liso/patología , Músculo Liso/cirugía , Uretra/patología , Neoplasias de la Vejiga Urinaria/cirugía , Anciano , Femenino , Humanos , Masculino , Oncología Médica/métodos , Persona de Mediana Edad , Análisis Multivariante , Neoplasia Residual , Oportunidad Relativa , Reproducibilidad de los Resultados , Resultado del Tratamiento , Neoplasias de la Vejiga Urinaria/terapia , Urología/métodos
19.
Zhonghua Yi Xue Za Zhi ; 92(18): 1264-7, 2012 May 15.
Artículo en Zh | MEDLINE | ID: mdl-22883065

RESUMEN

OBJECTIVE: To evaluate the efficacy and safety of sorafenib in the prevention and treatment of hepatocellular carcinoma (HCC) relapse after liver transplantation. METHODS: A retrospective cohort study was performed to assess the efficacy and safety of sorafenib for HCC. Forty-four patients who underwent liver transplant for HCC beyond Milan criteria form July 2007 to May 2010 were included study group (sorafenib, n = 22) and control group (without sorafenib, n = 22). The primary endpoints of the study were disease-free survival (DFS), overall survival (OS). Secondary outcomes included the rates of acute rejection and graft survival. RESULTS: The clinical data of 44 patients were completely collected. There were significantly differences between sorafenib group and control group in 1-year DFS (81.8% (n = 18) vs 63.6% (n = 14), P < 0.05) and OS (90.9% (n = 20) vs 72.7% (n = 16), P < 0.05) respectively. The acute rejection rates in Sorafenib were 13.6% (3/22), compared with 18.2% (4/22) in control group (P = 0.524) and 1-year graft survival in Sorafenib group were 86.4% (19/22), compared with 72.7% (16/22) in control group (P = 0.086). The overall incidence of treatment-related adverse events was 68.1% (n = 15) in sorafenib group and 31.8% (n = 7) in the control group (P < 0.01). Adverse events that were reported for patients receiving sorafenib were predominantly grade 1 or 2 in severity including diarrhea (45.5%, n = 10), liver dysfunction (40.9%, n = 9), hand-foot skin reaction (31.8%, n = 7) and pains of head and four limbs (22.7%, n = 5). Two patients with grade 3 adverse events in study group were stopped continuing to use the sorafenib. Three patients with the dose of 400 mg twice daily and 17 patients with the dose reduction of sorafenib continued to the study endpoint. CONCLUSION: Patients with HCC undergoing liver transplantation could get the benefits of Sorafenib in reducing the incidence of tumor recurrence and extending disease-free and overall survival time.


Asunto(s)
Carcinoma Hepatocelular/tratamiento farmacológico , Neoplasias Hepáticas/tratamiento farmacológico , Recurrencia Local de Neoplasia/tratamiento farmacológico , Niacinamida/análogos & derivados , Compuestos de Fenilurea/uso terapéutico , Adolescente , Adulto , Anciano , Carcinoma Hepatocelular/patología , Carcinoma Hepatocelular/cirugía , Estudios de Cohortes , Femenino , Humanos , Neoplasias Hepáticas/patología , Neoplasias Hepáticas/cirugía , Trasplante de Hígado , Persona de Mediana Edad , Niacinamida/uso terapéutico , Estudios Retrospectivos , Sorafenib , Resultado del Tratamiento , Adulto Joven
20.
Zhonghua Gan Zang Bing Za Zhi ; 20(1): 14-6, 2012 Jan.
Artículo en Zh | MEDLINE | ID: mdl-22464699

RESUMEN

OBJECTIVE: To evaluate the outcomes of liver transplant recipients who received liver allografts from hepatitis B surface antigen (HBsAg)-positive donors. METHODS: The medical records of 23 male patients (median age, 42.5 years; range: 29-61) who received HBsAg-(+) liver allografts in our organ transplant center were retrospectively analyzed. All patients had confirmed diagnosis of end-stage liver disease (ESLD) secondary to hepatitis B virus (HBV) infection, including 13 HBsAg(+)/HBeAg(-)/HBcAb(+) cases and 10 HBsAg(+)/HBeAb(+)/HBcAb(+) cases. After transplantation, all patients were administered oral entecavir and intravenous anti-hepatitis B immunoglobulin (HBIG) (2000 IU/d during the first week), along with a steroid-free immune suppression regimen. HBV-related antigen and antibody and HBV DNA were detected on post-transplantation days 1, 7, 14, 21, and 30. The liver allografts were monitored by ultrasound imaging. After discharge, monthly follow-up recorded liver function, renal function, acute rejection, infections, vascular complications, biliary complications, HBV recurrence, cancer recurrence, and patient survival. RESULTS: Two of the recipients died from severe perioperative pneumonia. The remaining 21 recipients were followed-up for 10 to 38 months, and all 21 patients remained HBsAg(+). One recipient developed biliary ischemia and required a second liver transplantation at five months after the primary transplantation. Three recipients (all primary) died from tumor recurrence at 9, 14, and 18 months post-transplantation, respectively. All other recipients survived and had acceptably low HBV DNA copy levels. Color Doppler imaging showed good graft function and normal texture. The patient and graft survival rates were 78.3% (18/23) and 73.9% (17/23), respectively. The recurrence rate of HBV infection was 100% (23/23). In surviving patients, no liver function abnormality, graft loss, or death was found to be related to the recurrence of HBV infection. CONCLUSION: Liver transplantation using HBsAg(+) liver grafts was safe for patients with ESLD secondary to HBV infection.


Asunto(s)
Enfermedad Hepática en Estado Terminal/cirugía , Antígenos de Superficie de la Hepatitis B/inmunología , Trasplante de Hígado/inmunología , Trasplante de Hígado/métodos , Adulto , Enfermedad Hepática en Estado Terminal/virología , Humanos , Masculino , Persona de Mediana Edad , Recurrencia , Estudios Retrospectivos , Donantes de Tejidos
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA