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1.
Hepatology ; 80(4): 776-790, 2024 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-38652555

RESUMEN

BACKGROUND AND AIMS: Previous genome-wide association studies (GWAS) have indicated the involvement of shared (population-nonspecific) and nonshared (population-specific) susceptibility genes in the pathogenesis of primary biliary cholangitis (PBC) among European and East-Asian populations. Although a meta-analysis of these distinct populations has recently identified more than 20 novel PBC susceptibility loci, analyses of population-specific genetic architecture are still needed for a more comprehensive search for genetic factors in PBC. APPROACH AND RESULTS: Protein tyrosine phosphatase nonreceptor type 2 ( PTPN2) was identified as a novel PBC susceptibility gene locus through GWAS and subsequent genome-wide meta-analysis involving 2181 cases and 2699 controls from the Japanese population (GWAS-lead variant: rs8098858, p = 2.6 × 10 -8 ). In silico and in vitro functional analyses indicated that the risk allele of rs2292758, which is a primary functional variant, decreases PTPN2 expression by disrupting Sp1 binding to the PTPN2 promoter in T follicular helper cells and plasmacytoid dendritic cells. Infiltration of PTPN2-positive T-cells and plasmacytoid dendritic cells was confirmed in the portal area of the PBC liver by immunohistochemistry. Furthermore, transcriptomic analysis of PBC-liver samples indicated the presence of a compromised negative feedback loop in vivo between PTPN2 and IFNG in patients carrying the risk allele of rs2292758. CONCLUSIONS: PTPN2 , a novel susceptibility gene for PBC in the Japanese population, may be involved in the pathogenesis of PBC through an insufficient negative feedback loop caused by the risk allele of rs2292758 in IFN-γ signaling. This suggests that PTPN2 could be a potential molecular target for PBC treatment.


Asunto(s)
Predisposición Genética a la Enfermedad , Estudio de Asociación del Genoma Completo , Cirrosis Hepática Biliar , Proteína Tirosina Fosfatasa no Receptora Tipo 2 , Femenino , Humanos , Masculino , Estudios de Casos y Controles , Japón , Cirrosis Hepática Biliar/genética , Polimorfismo de Nucleótido Simple , Proteína Tirosina Fosfatasa no Receptora Tipo 2/genética , Pueblos del Este de Asia/genética
2.
J Clin Biochem Nutr ; 74(2): 162-168, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38510683

RESUMEN

Zinc deficiency occurs in a variety of diseases, including chronic liver disease (CLD). We investigated the correlation between zinc levels and biochemical and hematological tests in CLD and the effect of zinc supplementation with polaprezinc on these values. The first study (Study 1) was a retrospective observational study of 490 patients with CLD not receiving zinc supplementation, with data available from September 2009 to August 2021. Univariate and multiple regression analysis showed that serum zinc levels correlated most strongly with albumin (Alb) and also significantly with prothrombin time activity (PT%) and hemoglobin (Hb). A subsequent study (Study 2) focused on patients with advanced CLD who used polaprezinc for more than 90 days between January 2005 and August 2021. Using a self-controlled design with the 6-month period prior to polaprezinc as the control period, comparisons showed that Alb (p<0.0001), PT% (p<0.0005), and Hb (p<0.01) were significantly improved in the polaprezinc-treated patients compared to the control group. In conclusion, serum zinc levels were correlated with serum Alb, Hb, and PT% in patients with CLD, and zinc supplementation with polaprezinc was associated with improvements in Alb, Hb, and PT% within at least 6 months.

3.
Gan To Kagaku Ryoho ; 47(1): 61-65, 2020 Jan.
Artículo en Japonés | MEDLINE | ID: mdl-32381864

RESUMEN

Oxaliplatin(L-OHP)-related hypersensitivity reactions(HSRs)may be fatal due to bronchospasm, dyspnea, and hypotension. Therefore, management of HSRs is extremely important, and a prompt and appropriate response is required when HSRs develop. To clarify the importance of early detection and an appropriate initial response to HSRs, we retrospectively investigated the expression of HSRs and subsequent response in patients using L-OHP from April 2016 to December 2017 at the outpatient chemotherapy center of Nagasaki Medical Center. HSRs were observed in 14/155 cases(one case of Grade 1 HSRs and 13 cases of Grade 2 HSRs). No significant risk factors were identified in individuals with and without HSRs. HSRs devel- oped following a median of 7.9(2-11)courses of chemotherapy and a median 687.8(75.4-960.2)mg/m2 cumulative dose. Half of the patients were able to recognize the hypersensitivity early by themselves. Furthermore, nurses were able to implement an appropriate initial response. Early detection and an appropriate early response to HSRs can possibly prevent the severity of symptoms.


Asunto(s)
Hipersensibilidad a las Drogas , Oxaliplatino/efectos adversos , Antineoplásicos , Humanos , Estudios Retrospectivos , Factores de Riesgo
4.
Hepatol Res ; 46(3): E89-99, 2016 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25951079

RESUMEN

AIM: Serum hepatitis B surface antigen (HBsAg) seroclearance is one of the ultimate goals of management of chronic hepatitis B. We investigated the kinetics of serum HBsAg before HBsAg seroclearance in patients with chronic hepatitis B. METHODS: We retrospectively analyzed 392 Japanese chronic hepatitis B patients who had been followed for 5 years or more between 1980 and 2000. Serum HBsAg levels were measured annually using chemiluminescent enzyme immunoassay. RESULTS: During a median follow up of 14 years, 50 patients demonstrated HBsAg seroclearance (annual incidence rate, 0.91%). Multivariate analysis with baseline characteristics revealed that HBsAg of less than 3.3 log IU/mL (hazard ratio [HR], 2.22; P = 0.008) and treatment with nucleoside/nucleotide analog (HR, 0.12; P = 0.001) were independent predictive factors for seroclearance. The median HBsAg levels at 20, 10, 5, 3 and 1 year prior to seroclearance were 3.89, 2.84, 1.84, 0.78 and -1.10 log IU/mL, respectively. The rapid decline group, comprising patients who achieved HBsAg seroclearance within 5 years after confirmed HBsAg levels of 2 log IU/mL, demonstrated: (i) high alanine aminotransferase (ALT) levels; and (ii) a low frequency of liver cirrhosis progression. A significant reduction in annual HBsAg levels was found in years marked by at least one ALT flare (ALT ≥200 IU/L) (flare [+], n = 62) than in those without (flare [-], n = 323) (0.29 vs 0.17 log IU/mL/year, P = 0.003). CONCLUSION: Hepatic flares promoted rapid declines and greater annual reductions of HBsAg levels in patients with HBsAg seroclearance.

5.
Hepatology ; 60(5): 1563-70, 2014 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-25042054

RESUMEN

UNLABELLED: The Wisteria floribunda agglutinin-positive human Mac-2-binding protein (WFA+-M2BP) was recently shown to be a liver fibrosis glycobiomarker with a unique fibrosis-related glycoalteration. We evaluated the ability of WFA+-M2BP to predict the development of hepatocellular carcinoma (HCC) in patients who were infected with the hepatitis C virus (HCV). A total of 707 patients who had been admitted to our hospital with chronic HCV infection without other potential risk factors were evaluated to determine the ability of WFA+-M2BP to predict the development of HCC; factors evaluated included age, sex, viral load, genotypes, fibrosis stage, aspartate and alanine aminotransferase levels, bilirubin, albumin, platelet count, alpha-fetoprotein (AFP), WFA+-M2BP, and the response to interferon (IFN) therapy. Serum WFA+-M2BP levels were significantly increased according to the progression of liver fibrosis stage (P<0.001). In each distinctive stage of fibrosis (F0-F1, F2, F3, and F4), the risk of development of HCC was increased according to the elevation of WFA+-M2BP. Multivariate analysis identified age>57 years, F4, AFP>20 ng/mL, WFA+-M2BP ≥4, and WFA+-M2BP 1-4 as well as the response to IFN (no therapy vs. sustained virological response) as independent risk factors for the development of HCC. The time-dependent areas under the receiver operating characteristic curve demonstrated that the WFA+-M2BP assay predicted the development of HCC with higher diagnostic accuracy than AFP. CONCLUSION: WFA+-M2BP can be applied as a useful surrogate marker for the risk of HCC development, in addition to liver biopsy.


Asunto(s)
Antígenos de Neoplasias/inmunología , Biomarcadores de Tumor/sangre , Carcinoma Hepatocelular/sangre , Neoplasias Hepáticas/sangre , Glicoproteínas de Membrana/inmunología , Lectinas de Plantas , Adulto , Anciano , Carcinoma Hepatocelular/virología , Femenino , Hepatitis C/complicaciones , Humanos , Cirrosis Hepática/complicaciones , Cirrosis Hepática/virología , Neoplasias Hepáticas/virología , Masculino , Persona de Mediana Edad , Receptores N-Acetilglucosamina , Estudios Retrospectivos , Factores de Riesgo , Adulto Joven , alfa-Fetoproteínas/metabolismo
6.
Artículo en Inglés | MEDLINE | ID: mdl-38969057

RESUMEN

OBJECTIVES: To determine the feasibility of segmentectomy in patients with central, whole tumor size ≤2 cm and radiologically solid-dominant cN0 non-small cell lung cancer (NSCLC). METHODS: We retrospectively reviewed 1240 patients who underwent lobectomy or segmentectomy for small and radiologically solid-dominant cN0 NSCLC between January 2010 and December 2022. The inclusion criteria encompassed centrally located tumors, defined as tumors located in the inner two-thirds of the pulmonary parenchyma. Propensity score matching was applied to balance the baseline characteristics in the 2 study groups. RESULTS: Among the 299 eligible patients, no significant differences in recurrence-free survival (RFS) and overall survival (OS) were observed between the segmentectomy (n = 121) and lobectomy (n = 178) groups (P = .794 and .577, respectively). After propensity score matching, no significant differences in hilar and mediastinal lymph node upstaging were found among the 93 matched patients (P = 1.00), and locoregional recurrence was comparable in the segmentectomy (n = 4) and lobectomy (n = 4) groups. RFS and OS did not differ significantly between the 2 groups (P = .700 and .870, respectively). Propensity score-adjusted multivariable Cox analysis for RFS and OS indicated that segmentectomy was not an independent prognostic factor (RFS: hazard ratio [HR], 0.89; 95% confidence interval [CI], 0.43-1.85; P = .755; OS: HR, 1.09; 95% CI, 0.38-3.14; P = .860). CONCLUSIONS: Segmentectomy may be a viable treatment option, with local control and prognosis comparable to that of lobectomy in appropriately selected patients with central, small (≤2 cm), and radiologically solid-dominant NSCLC.

8.
Nihon Shokakibyo Gakkai Zasshi ; 109(4): 585-92, 2012 Apr.
Artículo en Japonés | MEDLINE | ID: mdl-22481259

RESUMEN

We examined the clinicopathological features of metastatic gastric tumor, using 9 tumors of 8 patients. Histological diagnosis with all biopsy specimens were adenocarcinoma. Most of the metastatic sites were located in the middle or upper gastric corpus. Endoscopic features of the lesion showed a submucosal tumor-like (5 cases) and primary gastric cancer-like (3 cases) appearance. Immunohistochemical staining of cytokeratins, TTF-1, surfactant protein, ER, or MGB1 identified the primary site; 6 in the lung and 2 in the breast. One case was diagnosed based on the EGFR mutation analysis. In conclusion, immunohistochemical staining and molecular method are useful tools to distinguish metastatic gastric tumor from primary gastric cancer.


Asunto(s)
Adenocarcinoma/patología , Adenocarcinoma/secundario , Neoplasias Gástricas/patología , Neoplasias Gástricas/secundario , Anciano , Biopsia , Femenino , Humanos , Inmunohistoquímica , Masculino , Persona de Mediana Edad
9.
Nihon Shokakibyo Gakkai Zasshi ; 108(6): 987-96, 2011 Jun.
Artículo en Japonés | MEDLINE | ID: mdl-21646767

RESUMEN

A woman in her 60's presented with a tumor of the pancreatic body. Pan-hysterectomy had been performed under a diagnosis of uterine leiomyoma 11 years previously. A sample obtained by endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) revealed the histopathological proliferation of spindle-shaped bundles of atypical cells, and immunohistochemical staining demonstrated that these cells were positive for KIT. Therefore, distal pancreatectomy was performed under a diagnosis of pancreatic gastrointestinal stromal tumor (GIST). Immunohistochemical staining of surgical specimens demonstrated that the tumor cells were positive for desmin and negative for KIT and CD34. The low-grade leiomyosarcoma in pathological specimens of the uterine myoma obtained 11 years previously histologically resembled the pathological findings of the pancreatic specimens except for atypical nuclei and mitotic cells. Therefore, the final diagnosis was extremely rare metastatic leiomyosarcoma of the pancreas. Herein, we report metastasis of uterine leiomyosarcoma to the pancreas and discuss the usefulness and limitations of EUS-FNA.


Asunto(s)
Biopsia con Aguja Fina/métodos , Endosonografía , Leiomiosarcoma/patología , Neoplasias Pancreáticas/patología , Neoplasias Pancreáticas/secundario , Neoplasias Uterinas/patología , Femenino , Humanos , Persona de Mediana Edad
10.
Anal Chem ; 82(4): 1420-6, 2010 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-20092311

RESUMEN

In this study, we show for the first time that the separation efficiency of a pillar array column under pressure-driven liquid chromatography (LC) conditions can be improved using a separation channel with low-dispersion turns. The pillar array column was fabricated by reactive ion etching of a silicon substrate. With the low-dispersion-turn geometry, a column with a length and width of 110 mm and 400 microm, respectively, could be fabricated on a 20 x 20 mm microchip. Under nonretained conditions, the solute bands obtained for fluorescent compounds remained almost unchanged even after passing through the low-dispersion turns; however, significant skewing of the solute bands was observed in the case of constant-radius turns. Two coumarin dyes were well resolved under reversed-phase conditions, and a maximum theoretical plate number of 8000 was obtained. Successful separation of the fluorescent derivatives of six amino acids was achieved in 140 s. These results indicated that the separation efficiency of microchip chromatography could be significantly improved using a long separation channel with low-dispersion turns.


Asunto(s)
Cromatografía Liquida/instrumentación , Análisis por Micromatrices , Presión , Cumarinas/aislamiento & purificación , Colorantes Fluorescentes/aislamiento & purificación , Inyecciones
11.
PLoS One ; 15(10): e0241002, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33085694

RESUMEN

BACKGROUND: We examined serum kynurenine levels in patients with chronic hepatitis C virus infection, and the relationship between serum kynurenine and prognosis in patients with hepatocellular carcinoma (HCC) and chronic hepatitis C. METHODS: We retrospectively analyzed 604 patients with HCC diagnosed between January 1999 and December 2015, and 288 patients without HCC who were seen at the National Hospital Organization Nagasaki Medical Center between October 2014 and November 2017. The association between serum kynurenine and prognosis was evaluated using the Cox's proportional hazards regression analysis. RESULTS: Patients with HCC had significantly higher values of serum kynurenine than patients without HCC (median: 557.1 vs. 464.2 ng/mL, p<0.001). Five-year survival rates of HCC patients with serum kynurenine ≥900 (n = 65), 600-899 (n = 194), and <600 ng/mL (n = 345) were 30.6%, 47.4%, and 61.4%, respectively (p = 0.001, log-rank test). Multivariate analysis identified serum kynurenine as an independent predictor for prognosis of HCC patients. The hazard ratio of serum kynurenine ≥900, and 600-899 compared with serum kynurenine <600 ng/mL were 1.91 (p<0.001) and 1.37 (p = 0.015), respectively. CONCLUSIONS: A high level of serum kynurenine correlated with poor prognosis of HCC. Serum kynurenine levels may be a novel biomarker to predict the prognosis of patients with HCC. The development of drugs that inhibit kynurenine production is expected to help improve the prognosis of patients with HCC.


Asunto(s)
Biomarcadores de Tumor/sangre , Carcinoma Hepatocelular/mortalidad , Hepatitis C Crónica/sangre , Quinurenina/sangre , Neoplasias Hepáticas/mortalidad , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma Hepatocelular/sangre , Carcinoma Hepatocelular/virología , Femenino , Hepatitis C Crónica/complicaciones , Humanos , Estimación de Kaplan-Meier , Neoplasias Hepáticas/sangre , Neoplasias Hepáticas/virología , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos , Tasa de Supervivencia
12.
Clin J Gastroenterol ; 12(3): 218-222, 2019 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-30465320

RESUMEN

Patients with acute hepatitis B (AHB) usually present after developing symptoms; therefore, the temporal kinetics of viral markers during the incubation period have not been documented clearly. We describe an AHB infection before the onset of hepatitis, throughout the course of the disease and without anti-viral therapy. The patient initially visited our hospital for immunization against HBV and was found to be positive for viral markers: 0.0 IU/mL of anti-HBs, 0.06 S/CO of anti-HBc and 2.93 IU/mL of HBsAg. During the 14 days after his first visit, HBsAg, HBV DNA, HBe antigen and HBV core-related antigen, but not anti-HBc or anti-HBs, levels increased. On day 22, he developed acute hepatitis. The period of logarithmic viral replication was estimated to be 7.0 days. HBV genomic sequencing and phylogenetic analysis indicated transmission from the patient's wife. Although sexual intercourse could not be ruled, another possible route of transmission was the unusual occurrence of kissing his wife when she had macroscopic bleeding after tooth brushing, 2 months before his positive HBsAg result; the day of the episode being consistent with the calculated HBV replication velocity. This study reveals the temporal kinetics of viral markers during the incubation period of AHB.


Asunto(s)
ADN Viral/sangre , Anticuerpos contra la Hepatitis B/sangre , Antígenos de la Hepatitis B/sangre , Hepatitis B/sangre , Enfermedad Aguda , Adulto , Biomarcadores/sangre , Antígenos de la Hepatitis B/inmunología , Antígenos del Núcleo de la Hepatitis B/inmunología , Antígenos de Superficie de la Hepatitis B/sangre , Antígenos de Superficie de la Hepatitis B/inmunología , Antígenos e de la Hepatitis B/sangre , Humanos , Periodo de Incubación de Enfermedades Infecciosas , Masculino
13.
PLoS One ; 11(9): e0163644, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27680885

RESUMEN

BACKGROUND & AIM: We performed lipid analyses at the early period of therapy in patients with chronic hepatitis C who underwent interferon (IFN)-free direct-acting antiviral (DAA) treatment, and we attempted to identify the factors that contributed to a rapid increase in the patients' serum low-density lipoprotein cholesterol (LDL-C) concentration. METHODS: We retrospectively analyzed the cases of 100 consecutive patients with HCV infection treated at the National Hospital Organization Nagasaki Medical Center: 24 patients underwent daclatasvir (DCV) and asunaprevir (ASV) combination therapy (DCV/ASV) for 24 weeks, and the other 76 patients underwent ledipasvir and sofosbuvir combination therapy (LDV/SOF) for 12 weeks. ΔLDL-C was defined as the changed in LDL-C level at 28 days from the start of therapy. To determine whether ΔLDL-C was associated with several kinds of factors including viral kinetics, we performed a stepwise multiple linear regression analysis. RESULTS: The LDL-C levels in patients treated with LDV/SOF were markedly and significantly elevated (87.45 to 122.5 mg/dl; p<10-10) compared to those in the DCV/ASV-treated patients (80.15 to 87.8 mg/dl; p = 0.0056). The median levels of ΔLDL-C in the LDV/SOF and DCV/ASV groups were 33.2 and 13.1, respectively. LDV/SOF combination therapy as an IFN-free regimen (p<0.001) and ΔHCV core antigen (0-1 day drop) (p<0.044) were identified as independent factors that were closely related to the ΔLDL-C. CONCLUSIONS: A rapid increase in the serum LDL-C concentration during the IFN-free treatment of hepatitis C was associated with the type of HCV therapy and a decline of HCV core protein.

14.
Intern Med ; 54(7): 771-5, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-25832940

RESUMEN

Inflammatory pseudotumor (IPT) is a rare benign condition often misdiagnosed as malignancy. An 80-year-old man was referred to our clinic for an asymptomatic hepatic mass detected on plain abdominal CT. Abdominal ultrasonography identified the lesion as a poorly defined hypoechoic mass. Although a liver biopsy did not provide any evidence of malignancy, imaging modalities suggested a diagnosis of cholangiocarcinoma. The patient underwent left lobectomy, and the pathological findings were consistent with the features of xanthogranulomatous cholangitis. This case is the first report of hepatic IPT originating from xanthogranulomatous cholangitis without symptoms and illustrates the importance of obtaining a preoperative diagnosis in order to avoid a misdiagnosis of malignant tumor.


Asunto(s)
Conductos Biliares Intrahepáticos/patología , Colangiocarcinoma/diagnóstico , Colangitis/diagnóstico , Granuloma de Células Plasmáticas/diagnóstico , Hepatopatías/diagnóstico , Neoplasias de los Conductos Biliares/diagnóstico , Neoplasias de los Conductos Biliares/patología , Biopsia , Colangitis/patología , Diagnóstico Diferencial , Errores Diagnósticos , Diagnóstico por Imagen , Granuloma de Células Plasmáticas/patología , Granuloma de Células Plasmáticas/cirugía , Humanos , Hepatopatías/patología , Hepatopatías/cirugía , Masculino , Cuidados Preoperatorios , Resultado del Tratamiento
15.
PLoS One ; 10(6): e0129053, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26070204

RESUMEN

Measurement of Wisteria floribunda agglutinin-positive human Mac-2 binding protein (WFA+-M2BP) in serum was recently shown to be a noninvasive method to assess liver fibrosis. The aim of this study was to evaluate the utility of serum WFA+-M2BP values to predict the development of hepatocellular carcinoma (HCC) in patients who achieved a sustained virological response (SVR) by interferon treatment. For this purpose, we retrospectively analyzed 238 patients with SVR who were treated with interferon in our department. Serum WFA+-M2BP values were measured at pre-treatment (pre-Tx), post-treatment (24 weeks after completion of interferon; post-Tx), the time of HCC diagnosis, and the last clinical visit. Of 238 patients with SVR, HCC developed in 16 (6.8%) patients. The average follow-up period was 9.1 years. The cumulative incidence of HCC was 3.4% at 5 years and 7.5% at 10 years. The median pre-Tx and post-Tx WFA+-M2BP values were 1.69 (range: 0.28 to 12.04 cutoff index (COI)) and 0.80 (range: 0.17 to 5.29 COI), respectively. The WFA+-M2BP values decreased significantly after SVR (P < 0.001). The median post-Tx WFA+-M2BP value in patients who developed HCC was significantly higher than that in patients who did not (P < 0.01). Multivariate analysis disclosed that age (> 60 years), sex (male), pre-Tx platelet count (< 15.0×10(3)/µL), and post-Tx WFA+-M2BP (> 2.0 COI) were associated with the development of HCC after SVR. Conclusion: Post-Tx WFA+-M2BP (> 2.0 COI) is associated with the risk for development of HCC among patients with SVR. The WFA+-M2BP values could be a new predictor for HCC after SVR.


Asunto(s)
Antígenos de Neoplasias/sangre , Biomarcadores de Tumor , Carcinoma Hepatocelular/sangre , Carcinoma Hepatocelular/etiología , Hepatitis C Crónica/complicaciones , Neoplasias Hepáticas/sangre , Neoplasias Hepáticas/etiología , Glicoproteínas de Membrana/sangre , Lectinas de Plantas/sangre , Receptores N-Acetilglucosamina/sangre , Adolescente , Adulto , Anciano , Antivirales/uso terapéutico , Biopsia , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/epidemiología , Femenino , Genotipo , Hepacivirus/genética , Hepatitis C Crónica/tratamiento farmacológico , Hepatitis C Crónica/virología , Humanos , Incidencia , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/epidemiología , Masculino , Persona de Mediana Edad , Pronóstico , Factores de Riesgo , Resultado del Tratamiento , Carga Viral , Adulto Joven
16.
Int J Oncol ; 22(2): 345-51, 2003 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-12527933

RESUMEN

Introduction of genes encoding immuno-stimulatory cytokines into cancer cells is known to enhance antitumor immunity. CD40 ligand (CD40L, CD154) and fms-like tyrosine kinase 3 ligand (Flt3L) are recently identified cytokines, which have been demonstrated to stimulate antitumor immunity in several cancer models. However little is known about antitumor activity of Ftl3L and CD40L against hepatocellular carcinoma (HCC). In the present study, we constructed replication-defective adenoviruses expressing Flt3L and CD40L and examined their therapeutic efficacy on mouse HCC, MH134 cells. Subcutaneous injection of MH134 cells genetically engineered to express Flt3L and/or CD40L developed tumors in all the syngeneic immunocompetent mice, but tumor growth was significantly delayed as compared to control mice. Partial inhibition of this antitumor effect in athymic nude mice suggests that both innate and adaptive immunity appear to play a role. It was shown by immunodepletion of NK cells with anti-asialo-GM1 antibody that the effector cells involved in innate immunity are NK cells. In a therapeutic setting, however, injection of adenovirus expressing Flt3L or CD40L into pre-established MH134 tumors exhibited no efficacy. These data demonstrate that Flt3L and CD40L induce significant, but only weak, antitumor immunity against MH134 cells presumably through both innate and adaptive immunity. Our results suggest that immuno-gene therapy with Flt3L and CD40L may need adjuvant modalities to achieve strong immune response.


Asunto(s)
Ligando de CD40/fisiología , Terapia Genética , Inmunoterapia , Neoplasias Hepáticas Experimentales/prevención & control , Proteínas de la Membrana/fisiología , Animales , Ligando de CD40/genética , ADN Complementario/genética , Virus Defectuosos/genética , Vectores Genéticos/genética , Vectores Genéticos/uso terapéutico , Células HeLa , Humanos , Inmunidad Innata , Inyecciones Subcutáneas , Células Asesinas Naturales/inmunología , Neoplasias Hepáticas Experimentales/inmunología , Neoplasias Hepáticas Experimentales/patología , Neoplasias Hepáticas Experimentales/terapia , Mastadenovirus/genética , Proteínas de la Membrana/genética , Ratones , Ratones Endogámicos C3H , Ratones Desnudos , Trasplante de Neoplasias , Proteínas Recombinantes de Fusión/fisiología , Células Tumorales Cultivadas/trasplante
17.
Int J Mol Med ; 13(1): 111-6, 2004 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-14654980

RESUMEN

Antitumor vaccination therapy approaches using naked plasmid DNA or recombinant viruses encoding tumor-associated antigens are currently in development. In the present study, we examined the therapeutic efficacy of vaccination using the mouse alpha-fetoprotein (AFP) gene in mouse hepatocellular carcinoma (HCC) cells. C57L/J or C3H/HeN mice were primed with an injection of naked plasmid DNA expressing mouse AFP followed by a booster of replication-defective adenovirus expressing mouse AFP (plasmid-AFP prime/adenovirus-AFP booster vaccination). The mice were then challenged with high AFP-producing Hepa1-6 cells or low AFP-producing MH134 cells, respectively, and the tumor growth rate was monitored. Plasmid-AFP prime/adenovirus-AFP booster vaccination promoted protective immunity against Hepa1-6 cells, and significantly increased the number of interferon-gamma-producing splenic cells in C57L/J mice. In addition, this vaccination protocol repressed the growth of pre-established Hepa1-6 tumors in C57L/J mice. However, plasmid-AFP prime/adenovirus-AFP booster vaccination did not induce protective immunity against MH134 cells in C3H/HeN mice. These results suggest that vaccination with the AFP gene is a promising strategy to treat HCC, but its outcome may be affected by the level of AFP expression in HCC or by the immunological response of the host.


Asunto(s)
Vacunas contra el Cáncer/farmacología , Carcinoma Hepatocelular/tratamiento farmacológico , Vacunas de ADN/farmacología , alfa-Fetoproteínas/genética , Adenoviridae , Animales , Vectores Genéticos , Interferón gamma/efectos de los fármacos , Ratones , Plásmidos/farmacología , Bazo/efectos de los fármacos , alfa-Fetoproteínas/inmunología
18.
World J Gastroenterol ; 18(20): 2517-25, 2012 May 28.
Artículo en Inglés | MEDLINE | ID: mdl-22654449

RESUMEN

AIM: To evaluate the efficacy and safety of adjunctive mosapride citrate for bowel preparation before colonoscopy. METHODS: We conducted a randomized, double-blind, placebo-controlled study with mosapride in addition to polyethylene glycol (PEG)-electrolyte solution. Of 250 patients undergoing colonoscopy, 124 were randomized to receive 2 L PEG plus 15 mg of mosapride citrate (mosapride group), and 126 received 2 L PEG plus placebo (placebo group). Patients completed a questionnaire reporting the acceptability and tolerability of the bowel preparation process. The efficacy of bowel preparation was assessed by colonoscopists using a 5-point scale based on Aronchick's criteria. The primary end point was optimal bowel preparation rates (scores of excellent/good/fair vs poor/inadequate). RESULTS: A total of 249 patients were included in the analysis. In the mosapride group, optimal bowel preparation rates were significantly higher in the left colon compared with the placebo group (78.2% vs 65.6%, P < 0.05), but not in the right colon (76.5% vs 66.4%, P = 0.08). After excluding patients with severe constipation, there was a significant difference in bowel preparation in both the left and right colon (82.4% vs 66.7%, 80.8% vs 67.5%, P < 0.05, P < 0.01). The incidence of adverse events was similar in both groups. Among the subgroup who had previous colonoscopy experience, a significantly higher number of patients in the mosapride group felt that the current preparation was easier compared with patients in the placebo group (34/72 patients vs 24/74 patients, P < 0.05). CONCLUSION: Mosapride citrate may be an effective and safe adjunct to PEG-electrolyte solution that leads to improved quality of bowel preparation, especially in patients without severe constipation.


Asunto(s)
Benzamidas/administración & dosificación , Catárticos/administración & dosificación , Colonoscopía/métodos , Morfolinas/administración & dosificación , Polietilenglicoles/administración & dosificación , Agonistas de Receptores de Serotonina/administración & dosificación , Anciano , Benzamidas/efectos adversos , Catárticos/efectos adversos , Método Doble Ciego , Femenino , Humanos , Masculino , Persona de Mediana Edad , Morfolinas/efectos adversos , Cooperación del Paciente , Polietilenglicoles/efectos adversos , Agonistas de Receptores de Serotonina/efectos adversos , Encuestas y Cuestionarios
20.
Cancer ; 97(12): 3036-43, 2003 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-12784339

RESUMEN

BACKGROUND: Hepatic steatosis is one of the histopathologic features of chronic hepatitis C. It was reported recently that the expression of hepatitis C virus (HCV) core protein in transgenic mice induced hepatocellular carcinoma (HCC) in association with steatosis. The objective of this study was to determine the relation between hepatic steatosis and hepatocarcinogenesis in patients with chronic HCV infection. METHODS: The authors studied 161 patients with chronic HCV infection who were diagnosed at Nagasaki University Hospital, Nagasaki, Japan, between January 1980 and December 1999. Age, gender, body mass index (BMI), habitual drinking, diabetes mellitus, serum alanine aminotransferase (ALT) level, HCV serotype, serum level of HCV core protein, interferon (IFN) treatment, hepatic fibrosis inflammation, and hepatic steatosis were studied with regard to their significance in the development of HCC using univariate and multivariate analyses. RESULTS: The cumulative incidence rates of HCC were 24%, 51%, and 63% at 5 years, 10 years, and 15 years, respectively. Multivariate analysis identified hepatic steatosis, together with aging, cirrhosis, and no IFN treatment, as independent and significant risk factors for HCC (P = 0.0135, P = 0.0390, P = 0.0068, and P = 0.0142, respectively). In addition, hepatic steatosis was correlated with BMI, serum ALT levels, and triglyceride levels. CONCLUSIONS: The findings of the current study indicate that hepatic steatosis is a risk factor for HCC in patients with chronic HCV infection. Patients with chronic HCV and hepatic steatosis should be monitored carefully for HCC.


Asunto(s)
Carcinoma Hepatocelular/etiología , Hígado Graso/complicaciones , Hepatitis C Crónica/complicaciones , Neoplasias Hepáticas/etiología , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Factores de Riesgo
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