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1.
Liver Transpl ; 21(5): 599-606, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25789635

RESUMO

Growing evidence suggests that pretransplant alpha-fetoprotein (AFP) predicts outcomes of hepatocellular carcinoma (HCC) patients treated with liver transplantation. We aimed to determine whether pretransplant AFP, Lens culinaris agglutinin-reactive alpha-fetoprotein (AFP-L3), and des-gamma-carboxyprothrombin (DCP) predicted HCC recurrence after transplantation. A retrospective cohort study of 313 HCC patients undergoing transplantation between 2000 and 2008 was conducted, and 48 (15.3%) developed recurrence during a median follow-up of 90.8 months. The 127 patients with available serum drawn before transplantation were included; they included 86 without recurrence and 41 with recurrence. Serum was tested for AFP, AFP-L3%, and DCP in a blinded fashion with the µTASWako i30 immunoanalyzer. All biomarkers were significantly associated with HCC recurrence. The hazard ratios (HRs) were 3.5 [95% confidence interval (CI), 1.9-6.7; P < 0.0001] for DCP ≥ 7.5 ng/mL and 2.8 (95% CI, 1.4-5.4; P = 0.002) for AFP ≥ 250 ng/mL. The HR increased to 5.2 (95% CI, 2.3-12.0; P < 0.0001) when AFP ≥ 250 ng/mL and DCP ≥7.5 ng/mL were considered together. When they were combined with the Milan criteria, the HR increased from 2.6 (95% CI, 1.4-4.7; P = 0.003) for outside the Milan criteria to 8.6 (95% CI, 3.0-24.6; P < 0.0001) for outside the Milan criteria and AFP ≥ 250 ng/mL and to 7.2 (95% CI, 2.8-18.1; P < 0.0001) for outside the Milan criteria and DCP ≥7.5 ng/mL. Our findings suggest that biomarkers are useful for predicting the risk of HCC recurrence after transplantation. Using both biomarkers and the Milan criteria may be better than using the Milan criteria alone in optimizing the decision of liver transplantation eligibility.


Assuntos
Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/cirurgia , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/cirurgia , Transplante de Fígado/métodos , Recidiva Local de Neoplasia/diagnóstico , Idoso , Biomarcadores/metabolismo , Carcinoma Hepatocelular/patologia , Estudos de Coortes , Feminino , Humanos , Neoplasias Hepáticas/patologia , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Lectinas de Plantas/química , Modelos de Riscos Proporcionais , Precursores de Proteínas/metabolismo , Protrombina/metabolismo , Estudos Retrospectivos , Índice de Gravidade de Doença , Transdução de Sinais , Tomografia Computadorizada por Raios X/métodos , alfa-Fetoproteínas/metabolismo
2.
World J Gastroenterol ; 24(12): 1321-1331, 2018 Mar 28.
Artigo em Inglês | MEDLINE | ID: mdl-29599607

RESUMO

AIM: To assess the performance of BALAD, BALAD-2 and their component biomarkers in predicting outcome of hepatocellular carcinoma (HCC) patients after liver transplant. METHODS: BALAD score and BALAD-2 class are derived from bilirubin, albumin, alpha-fetoprotein (AFP), Lens culinaris agglutinin-reactive AFP (AFP-L3), and des-gamma-carboxyprothrombin (DCP). Pre-transplant AFP, AFP-L3 and DCP were measured in 113 patients transplanted for HCC from 2000 to 2008. Hazard ratios (HR) for recurrence and death were calculated. Univariate and multivariate regression analyses were conducted. C-statistics were used to compare biomarker-based to predictive models. RESULTS: During a median follow-up of 12.2 years, 38 patients recurred and 87 died. The HRs for recurrence in patients with elevated AFP, AFP-L3, and DCP defined by BALAD cut-off values were 2.42 (1.18-5.00), 1.86 (0.98-3.52), and 2.83 (1.42-5.61), respectively. For BALAD, the HRs for recurrence and death per unit increased score were 1.48 (1.15-1.91) and 1.59 (1.28-1.97). For BALAD-2, the HRs for recurrence and death per unit increased class were 1.45 (1.06-1.98) and 1.38 (1.09-1.76). For recurrence prediction, the combination of three biomarkers had the highest c-statistic of 0.66 vs. 0.64, 0.61, 0.53, and 0.53 for BALAD, BALAD-2, Milan, and UCSF, respectively. Similarly, for death prediction, the combination of three biomarkers had the highest c-statistic of 0.66 vs 0.65, 0.61, 0.52, and 0.50 for BALAD, BALAD-2, Milan, and UCSF. A new model combining biomarkers with tumor size at the time of transplant (S-LAD) demonstrated the highest predictive capability with c-statistics of 0.71 and 0.69 for recurrence and death. CONCLUSION: BALAD and BALAD-2 are valid in transplant HCC patients, but less predictive than the three biomarkers in combination or the three biomarkers in combination with maximal tumor diameter (S-LAD).


Assuntos
Biomarcadores Tumorais/sangue , Carcinoma Hepatocelular/patologia , Neoplasias Hepáticas/patologia , Transplante de Fígado , Recidiva Local de Neoplasia/epidemiologia , Carcinoma Hepatocelular/sangue , Carcinoma Hepatocelular/mortalidade , Carcinoma Hepatocelular/cirurgia , Feminino , Seguimentos , Humanos , Neoplasias Hepáticas/sangue , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/cirurgia , Masculino , Pessoa de Meia-Idade , Modelos Biológicos , Prognóstico , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Índice de Gravidade de Doença , Resultado do Tratamento
3.
Ocul Immunol Inflamm ; 22(1): 34-41, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24490677

RESUMO

PURPOSE: To compare the cytokine spectrum of vitreoretinal lymphoma to uveitis and correlate cytokine concentrations with disease activity. METHODS: Retrospective case series of 10 patients with vitreoretinal lymphoma and 7 patients with uveitis. Aqueous humor concentration of IFN-γ, TNF-α, TNF-ß, IL-1ra, IL-1ß, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-10, IL-12, IL-13, IL-17, MCP-1, G-CSF, GM-CSF, and VEGF-A was determined using a bead-based assay (Luminex). Variance between groups, correlation coefficients, and longitudinal behavior of cytokines were analyzed. RESULTS: No statistically significant difference in cytokines was found when comparing groups. IL-10 was positively correlated with IL-6 and MCP-1. IL-6 was positively correlated with G-CSF, IL-1ra, IL-8, and IL-10. A relationship between concentration of any cytokine, aside from IL-10, and disease activity was not found. CONCLUSION: IL-10 and IL-6 are good immunologic markers to be used as complementary diagnostic tools. IL-10 is the only IL that could be used for monitoring purposes.


Assuntos
Humor Aquoso/metabolismo , Biomarcadores/metabolismo , Citocinas/metabolismo , Linfoma de Células B/diagnóstico , Neoplasias da Retina/diagnóstico , Uveíte/diagnóstico , Corpo Vítreo/patologia , Neoplasias Oculares/diagnóstico , Neoplasias Oculares/metabolismo , Humanos , Imunoensaio , Linfoma de Células B/metabolismo , Neoplasias da Retina/metabolismo , Estudos Retrospectivos , Uveíte/metabolismo
4.
PLoS One ; 8(6): e65627, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23750271

RESUMO

Intraocular cytokines are promising diagnostic biomarkers of vitreoretinal lymphoma. Here, we evaluate the utility of IL-10, IL-6 and IL-10/IL-6 for discriminating lymphoma from uveitis and report the effects of intraocular methotrexate and rituximab on aqueous cytokine levels in eyes with lymphoma. This is a retrospective case series including 10 patients with lymphoma and 7 patients with uveitis. Non-parametric Mann-Whitney analysis was performed to determine statistical significance of difference in interleukin levels between lymphoma and uveitis. Compared to eyes with uveitis, eyes with lymphoma had higher levels of IL-10 (U = 7.0; two-tailed p = 0.004) and IL-10/IL-6 (U = 6.0; two-tailed p = 0.003), whereas IL-6 levels were more elevated, although insignificant, in those patients with uveitis than in lymphoma (U = 15.0; two-tailed p = ns). Using a receiver operating characteristic analysis to identify threshold values diagnostic for lymphoma, optimal sensitivity and specificity improved to 80.0% and 100%, respectively, for IL-10>7.025 pg/ml and 90.0% and 100.0%, respectively, for IL-10/IL-6>0.02718. In patients in whom serial interleukin levels were available, regular intravitreal treatment with methotrexate and rituximab was associated with reduction in IL-10 levels over time. In conclusion, optimal IL-10 and IL-10/IL-6 threshold values are associated with a diagnostic sensitivity ≥80% and specificity of 100%. Therefore, these cytokines may serve as a useful adjunct in the diagnosis of lymphoma. While negative IL-10 and IL-10/IL-6 values do not exclude a diagnosis of lymphoma, elevated levels do appear to be consistent with lymphoma clinically. Moreover, elevated levels of IL-10 in the setting of a clinically quiet eye may point to impending disease recurrence. Lastly, once lymphoma is diagnosed, IL-10 levels can be monitored over time to assess disease activity and therapeutic response.


Assuntos
Anticorpos Monoclonais Murinos/farmacologia , Humor Aquoso/efeitos dos fármacos , Humor Aquoso/metabolismo , Interleucina-10/metabolismo , Linfoma/metabolismo , Metotrexato/farmacologia , Corpo Vítreo , Idoso , Idoso de 80 Anos ou mais , Criança , Diagnóstico Diferencial , Neoplasias Oculares/diagnóstico , Neoplasias Oculares/metabolismo , Feminino , Humanos , Linfoma/diagnóstico , Masculino , Pessoa de Meia-Idade , Rituximab , Uveíte/diagnóstico , Uveíte/metabolismo
5.
Clin Chim Acta ; 413(11-12): 1015-7, 2012 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-22353668

RESUMO

INTRODUCTION: Rheumatoid arthritis (RA) is an inflammatory autoimmune disease characterized by chronic joint inflammation and extra-articular manifestations, eventually leading to permanent disability without early therapeutic interventions. METHODS: The analytical and clinical performance of an electrochemiluminescent immunoassay (ECLIA) (Roche Diagnostics, Indianapolis, IN) were determined for cyclic citrullinated peptide antibodies (anti-CCP) in the diagnostic assessment of rheumatoid arthritis compared to a plate-based anti-CCP enzyme immunoassay (EIA) (Inova Diagnostics, Inc.). RESULTS: Imprecision studies on the automated Roche ECLIA demonstrated intra-assay CV's of <3% and inter-assay CV's of <7%. The Inova EIA had intra-assay CV's of <15% and inter-assay CV's of <12%. The limit of quantitation of both assays was acceptable, and both assays showed similar linearity within the manufacturer's defined reportable ranges. Overall, analytical concordance was 62%, with 95.2% positive and 53.2% negative concordance. The clinical specificity in a normal population (n=91) was 98.9% and 100% for Roche ECLIA and Inova EIA, respectively. The clinical specificity in a connective tissue disease population (n=98) was 91.9% (95%CI, 86.0 to 96.5%) and 88.8% (95% CI, 81.0 to 93.6%) for Roche ECLIA and Inova EIA, respectively. CONCLUSION: The Roche ECLIA demonstrated similar analytical performance, although with improved intra-assay precision, in comparison to the Inova EIA. The two methods also demonstrated similar clinical sensitivity and specificity. The Roche automated immunoassay is a viable alternative to the plate-based EIAs with the advantage of being performed on an automated platform.


Assuntos
Artrite Reumatoide/diagnóstico , Imunoensaio/métodos , Peptídeos Cíclicos/imunologia , Fator Reumatoide/análise , Automação Laboratorial/métodos , Doenças do Tecido Conjuntivo/diagnóstico , Feminino , Humanos , Técnicas Imunoenzimáticas/métodos , Medições Luminescentes/métodos , Masculino , Valores de Referência , Fator Reumatoide/imunologia , Sensibilidade e Especificidade
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