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1.
J Korean Med Sci ; 38(39): e323, 2023 Oct 09.
Artigo em Inglês | MEDLINE | ID: mdl-37821089

RESUMO

Toxocariasis is a zoonotic disease caused by ingesting eggs from soil contaminated with Toxocara canis and Toxocara cati, commonly found in feces of infected dogs and cats, leading to a range of clinical symptoms including fever, abdominal pain and gastrointestinal manifestations. Fascioliasis is also a zoonotic disease caused by liver flukes Fasciola hepatica and Fasciola gigantica, which can be contracted through consumption of contaminated water or aquatic plants, leading to various clinical features. Here, we report a case of a 39-year-old woman diagnosed with a liver abscess caused by co-infection of T. canis and F. hepatica, as confirmed by serological tests. Although the existence of a pet dog and an experience of eating raw water dropwort are potential clues for diagnosis, it cannot be determined as the source of infection because the source of infection has not been clearly identified. After administrating albendazole and triclabendazole sequentially, the patient showed improvement in blood test and imaging findings. Clinicians should be aware of parasitic co-infection and take appropriate management.


Assuntos
Doenças do Gato , Coinfecção , Doenças do Cão , Fasciola hepatica , Fasciolíase , Abscesso Hepático , Toxocara canis , Feminino , Humanos , Animais , Cães , Gatos , Adulto , Fasciolíase/complicações , Fasciolíase/diagnóstico , Fasciolíase/tratamento farmacológico , Coinfecção/diagnóstico , Doenças do Cão/parasitologia , Zoonoses/diagnóstico , Abscesso Hepático/complicações , Abscesso Hepático/diagnóstico
2.
J Korean Med Sci ; 37(11): e92, 2022 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-35315603

RESUMO

BACKGROUND: Tenofovir disoproxil fumarate (TDF, Viread®) had been used as a standard treatment option of chronic hepatitis B (CHB). This clinical trial was conducted to evaluate the efficacy and safety of DA-2802 (tenofovir disoproxil orotate) compared to TDF. METHODS: The present study was a double blind randomized controlled trial. Patients with CHB were recruited from 25 hospitals in Korea and given DA-2802 at a dose of 319 mg once daily or Viread® at a dose of 300 mg once daily for 48 weeks from March 2017 to January 2019. Change in hepatitis B virus (HBV) DNA level at week 48 after dosing compared to baseline was the primary efficacy endpoint. Secondary efficacy endpoints were proportions of subjects with undetectable HBV DNA, those with normal alanine aminotransferase (ALT) levels, and those with loss of hepatitis B envelop antigen (HBeAg), those with loss of hepatitis B surface antigen (HBsAg). Adverse events (AEs) were also investigated. RESULTS: A total of 122 patients (DA-2802 group: n = 61, Viread® group: n = 61) were used as full analysis set for efficacy analysis. Mean age, proportion of males, laboratory results and virologic characteristics were not different between the two groups. The change in HBV DNA level at week 48 from baseline was -5.13 ± 1.40 in the DA-2802 group and -4.97 ± 1.40 log10 copies/mL in the Viread® group. The analysis of primary endpoint using the nonparametric analysis of covariance showed statistically significant results (P < 0.001), which confirmed non-inferiority of DA-2802 to Viread® by a prespecified noninferiority margin of 1. The proportion of undetectable HBV DNA was 78.7% in the DA-2802 group and 75.4% in the Viread® group (P = 0.698). The proportion of subjects who had normal ALT levels was 75.4% in the DA-2802 group and 73.3% in the Viread® group (P = 0.795). The proportion of those with HBeAg loss was 8.1% in the DA-2802 group and 10.8% in the Viread® group (P = 1.000). No subject showed HBsAg loss. The frequency of AEs during treatment was similar between the two groups. Most AEs were mild to moderate in severity. CONCLUSION: DA-2802 is considered an effective and safe treatment for patients with CHB. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT02967939.


Assuntos
Antivirais/uso terapêutico , Hepatite B Crônica/tratamento farmacológico , Ácido Orótico/uso terapêutico , Tenofovir/uso terapêutico , Adulto , Relação Dose-Resposta a Droga , Método Duplo-Cego , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , República da Coreia , Resultado do Tratamento
3.
Int J Mol Sci ; 23(19)2022 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-36232933

RESUMO

Chronic liver inflammation can lead to fibrosis, cirrhosis, and hepatocellular carcinoma. Kupffer cells (KC) secrete proinflammatory and fibrogenic cytokines in response to lipopolysaccharide (LPS), and so play an important role in liver inflammation, where they induce hepatocellular damage. LPS also activates hepatic stellate cells and induces extracellular matrix deposition. In this study, we used isolated primary KC, primary hepatocytes, and primary hepatic stellate cells (HSC) to investigate whether evogliptin directly inhibits inflammatory and fibrotic signaling. We found that evogliptin inhibited LPS-induced secretion of inducible nitric oxide synthase and transforming growth factor ß (TGF-ß) from KC. Moreover, evogliptin inhibited inflammatory mediator release from hepatocytes and hepatic stellate cell activation that were induced by KC-secreted cytokines. In hepatocytes, evogliptin also inhibited LPS-induced expression of proinflammatory cytokines and fibrotic TGF-ß. In addition, evogliptin inhibited TGF-ß-induced increases in connective tissue growth factor levels and HSC activation. These findings indicate that evogliptin inhibits inflammatory and fibrotic signaling in liver cells. We also showed that the inhibitory effect of evogliptin on inflammatory and fibrotic signaling is associated with the induction of autophagy.


Assuntos
Fator de Crescimento do Tecido Conjuntivo , Lipopolissacarídeos , Fator de Crescimento do Tecido Conjuntivo/metabolismo , Citocinas/metabolismo , Fibrose , Células Estreladas do Fígado/metabolismo , Hepatócitos/metabolismo , Humanos , Inflamação/patologia , Mediadores da Inflamação/metabolismo , Lipopolissacarídeos/metabolismo , Lipopolissacarídeos/toxicidade , Fígado/metabolismo , Cirrose Hepática/metabolismo , Óxido Nítrico Sintase Tipo II/metabolismo , Piperazinas , Fator de Crescimento Transformador beta/metabolismo
4.
Dig Dis Sci ; 66(1): 315-324, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32056090

RESUMO

BACKGROUND AND AIMS: Sorafenib is a proven first-line treatment recommended for hepatocellular carcinoma (HCC) patients with portal vein invasion (PVI). However, multiple treatment modalities are used in clinical practice as a first-line option. This study is a prospective, observational, multicenter, cohort study evaluating patterns of treatment modalities and outcomes for HCC patients with PVI. METHODS: The baseline characteristics, treatment modalities, and outcomes were prospectively collected for 287 newly diagnosed HCC patients with PVI between August 2015 and July 2016 from 16 sites in Korea. RESULTS: During a median 7.8 months of follow-up (range 0.3-24.6 months), mortality was observed in 123 (42.9%) patients. Decision tree analysis classified patients into five subgroups with different outcomes. The patterns of treatment were very heterogeneous, and there was no dominant treatment modality. The most commonly used treatment modality was transarterial chemoembolization (TACE) (20.2%) followed by TACE plus external beam radiation therapy (17.8%) and sorafenib (12.5%). When stratified according to the extent of PVI, sorafenib treatment showed comparable outcomes when the PVI extent was lobal or main/bilateral, yet showed worse outcomes when the PVI extent was limited to the segmental level compared to those who received treatment other than sorafenib. CONCLUSIONS: HCC patients with PVI comprise a heterogeneous population and are treated with various treatment modalities with diverse clinical outcomes in clinical practice. Subclassification of HCC patients with PVI is required to minimize heterogeneity and should be considered for the selection of treatment modalities and future clinical trials.


Assuntos
Carcinoma Hepatocelular/terapia , Neoplasias Hepáticas/terapia , Veia Porta/patologia , Neoplasias Vasculares/terapia , Idoso , Antineoplásicos/administração & dosagem , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/mortalidade , Quimioembolização Terapêutica/métodos , Estudos de Coortes , Terapia Combinada/métodos , Feminino , Seguimentos , Humanos , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/mortalidade , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica/patologia , Estudos Prospectivos , Sorafenibe/administração & dosagem , Taxa de Sobrevida/tendências , Resultado do Tratamento , Neoplasias Vasculares/diagnóstico , Neoplasias Vasculares/mortalidade
5.
Int J Mol Sci ; 22(19)2021 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-34638852

RESUMO

Kahweol, a coffee-specific diterpene, induces apoptosis in human cancer cells, and some targets of kahweol-mediated apoptosis have been identified. However, the specific apoptotic effects and mechanism of action of kahweol in hepatocellular carcinoma (HCC) cells are unknown. This study was performed to investigate the molecular mechanism by which kahweol induces apoptosis in HCC cells. The Src pathway is associated with apoptosis in cancer. In this study, we found that kahweol induces apoptosis by inhibiting phosphorylation of Src, and also inhibiting p-mTOR and p-STAT3. Therefore, we suggest that kahweol is a potent inhibitor of HCC cell growth.


Assuntos
Apoptose/efeitos dos fármacos , Carcinoma Hepatocelular/metabolismo , Diterpenos/farmacologia , Neoplasias Hepáticas/metabolismo , Fator de Transcrição STAT3/metabolismo , Transdução de Sinais/efeitos dos fármacos , Serina-Treonina Quinases TOR/metabolismo , Quinases da Família src/metabolismo , Animais , Apoptose/genética , Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/patologia , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Proliferação de Células/genética , Perfilação da Expressão Gênica/métodos , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Humanos , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/patologia , Fosforilação/efeitos dos fármacos , RNA-Seq/métodos , Fator de Transcrição STAT3/genética , Transdução de Sinais/genética , Análise de Sobrevida , Serina-Treonina Quinases TOR/genética , Quinases da Família src/genética
6.
J Viral Hepat ; 27(10): 1052-1060, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32383246

RESUMO

The risk of developing hepatocellular carcinoma (HCC) after hepatitis B e antigen seroclearance (ESC) remains unclear. We established and validated a new risk prediction model for HCC development after ESC in patients with chronic hepatitis B (CHB) receiving antiviral therapy (AVT). Between 2006 and 2016, 769 patients (training cohort) and 1,061 patients (validation cohort) with CHB who experienced ESC during AVT using entecavir (ETV) or tenofovir disoproxil fumarate (TDF) were recruited. In the multivariate analysis, male sex (hazard ratio [HR] = 2.092; 95% confidence interval [CI] = 1.152-3.800), cirrhosis (HR = 5.141; 95% CI = 2.367-11.167) and fibrosis-4 index (FIB-4) of >3.25 (HR = 2.070; 95% CI = 1.184-3.620) were the independent risk factors for HCC development (all P < .05). Accordingly, a novel HCC-ESCAVT model was developed (1x[sex: male = 1, female = 0] + 3x(cirrhosis = 1, noncirrhosis = 0) + 1x(FIB-4: >3.25 = 1, ≤3.25 = 0). The cumulative risk for HCC development was significantly different among the risk groups based on the HCC-ESCAVT category (0-1, 2-4 and 5 for the low-, intermediate- and high-risk groups, respectively) (overall P < .001, log-rank test). The area under the receiver operating characteristic curve (AUC) for predicting HCC development 3, 5 and 10 years after ESC was 0.791, 0.771 and 0.790, respectively (all P < .05). The predictive value of the HCC-ESCAVT model was similar in the validation cohort (AUC = 0.802, 0.774 and 0.776 at 3, 5 and 10 years, respectively; all P < .05). Hence, we have developed and validated a new HCC-ESCAVT model for HCC development, which includes male sex, cirrhosis and FIB-4 of >3.25 as constituent variables.


Assuntos
Carcinoma Hepatocelular , Hepatite B Crônica , Neoplasias Hepáticas , Antivirais/uso terapêutico , Carcinoma Hepatocelular/tratamento farmacológico , Carcinoma Hepatocelular/epidemiologia , Feminino , Guanina/análogos & derivados , Antígenos E da Hepatite B , Hepatite B Crônica/complicações , Hepatite B Crônica/tratamento farmacológico , Humanos , Neoplasias Hepáticas/tratamento farmacológico , Neoplasias Hepáticas/epidemiologia , Masculino , Tenofovir/efeitos adversos
7.
J Korean Med Sci ; 35(29): e233, 2020 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-32715667

RESUMO

BACKGROUND: Liver cirrhosis has become a heavy burden not only for patients, but also for our society. However, little is known about the recent changes in clinical outcomes and characteristics of patients with cirrhosis-related complications in Korea. Therefore, we aimed to evaluate changes in characteristics of patients with liver cirrhosis in Daegu-Gyeongbuk province in Korea over the past 15 years. METHODS: We retrospectively reviewed the medical records of 15,716 liver cirrhotic patients from 5 university hospitals in Daegu-Gyeongbuk province from 2000 to 2014. The Korean Standard Classification of Diseases-6 code associated with cirrhosis was investigated through medical records and classified according to the year of first visit. RESULTS: A total of 15,716 patients was diagnosed with cirrhosis. A number of patients newly diagnosed with cirrhosis has decreased each year. In 2000, patients were most likely to be diagnosed with hepatitis B virus (HBV) cirrhosis, followed by alcoholic cirrhosis. There was a significant decrease in HBV (P < 0.001), but alcohol, hepatitis C virus (HCV), and non-alcoholic fatty liver disease (NAFLD) showed a significant increase during the study period (alcohol, P = 0.036; HCV, P = 0.001; NAFLD, P = 0.001). At the time of initial diagnosis, the ratio of Child-Turcotte-Pugh (CTP) class A gradually increased from 23.1% to 32.9% (P < 0.001). The most common cause of liver-related hospitalization in 2000 was hepatocellular carcinoma (HCC) (25.5%); in 2014, gastrointestinal bleeding with esophageal and gastric varices (21.4%) was the most common cause. Cases of hospitalization with liver-related complication represented 76.4% of all cases in 2000 but 70.9% in 2014. Incidence rate of HCC has recently increased. In addition, HCC-free survival was significantly lower in CTP class A than in classes B and C. Finally, there was significant difference in HCC occurrence according to causes (P < 0.001). HBV and HCV cirrhosis had lower HCC-free survival than alcoholic and NAFLD cirrhosis. CONCLUSION: In recent years, the overall number of cirrhosis patients has decreased. This study confirmed the recent trend in decrease of cirrhosis, especially of cirrhosis due to HBV, and the increase of HCV, alcoholic and NAFLD cirrhosis. Targeted screening for at-risk patients will facilitate early detection of liver diseases allowing effective intervention and may have decreased the development of cirrhosis and its complications.


Assuntos
Cirrose Hepática/diagnóstico , Adulto , Idoso , Carcinoma Hepatocelular/patologia , Feminino , Hepatite B/complicações , Hepatite C/complicações , Hospitalização/estatística & dados numéricos , Humanos , Estimativa de Kaplan-Meier , Cirrose Hepática/etiologia , Cirrose Hepática/mortalidade , Cirrose Hepática/patologia , Cirrose Hepática Alcoólica/complicações , Neoplasias Hepáticas/patologia , Masculino , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/complicações , República da Coreia , Estudos Retrospectivos , Fatores de Risco , Índice de Gravidade de Doença , Centros de Atenção Terciária
8.
Clin Gastroenterol Hepatol ; 17(13): 2811-2813.e1, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-30731195

RESUMO

Hepatitis B virus (HBV) suppression with nucleot(s)ide analogue therapy reduces the risk of hepatic decompensation and hepatocellular carcinoma (HCC) in patients with advanced liver disease.1 In the present era of potent antiviral therapies, the prognostic significance of the serum HBV DNA level as a biological gradient has substantially diminished; the majority of treated patients achieve virologic suppression.2,3 After control of viremia, a higher baseline fibrosis level is a useful predictor for disease progression.4 Few "prospective" studies on the effects of antiviral agents, especially in chronic hepatitis B (CHB) patients with advanced liver disease, have been reported.


Assuntos
Antivirais/uso terapêutico , Carcinoma Hepatocelular/epidemiologia , Guanina/análogos & derivados , Hepatite B Crônica/tratamento farmacológico , Lamivudina/uso terapêutico , Neoplasias Hepáticas/epidemiologia , Varizes Esofágicas e Gástricas/etiologia , Feminino , Guanina/uso terapêutico , Antígenos E da Hepatite B , Hepatite B Crônica/sangue , Hepatite B Crônica/complicações , Humanos , Cirrose Hepática/complicações , Cirrose Hepática/patologia , Cirrose Hepática/fisiopatologia , Masculino , Pessoa de Meia-Idade , Esplenomegalia/etiologia , Trombocitopenia/etiologia , Carga Viral
10.
J Gastroenterol Hepatol ; 33(4): 910-917, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28910501

RESUMO

BACKGROUND AND AIM: Although serum cystatin C level is considered a more accurate marker of renal function in patients with liver cirrhosis, its prognostic efficacy remains uncertain. This study aimed to evaluate the prognostic efficacy of serum cystatin C level in patients with cirrhotic ascites. METHODS: Patients with cirrhotic ascites from 15 hospitals were prospectively enrolled between September 2009 and March 2013. Cox regression analyses were performed to identify independent predictive factors of mortality and development of type 1 hepatorenal syndrome (HRS-1). RESULTS: In total, 350 patients were enrolled in this study. The mean age was 55.4 ± 10.8 years, and 267 patients (76.3%) were men. The leading cause of liver cirrhosis was alcoholic liver disease (64.3%), followed by chronic viral hepatitis (29.7%). Serum creatinine and cystatin C levels were 0.9 ± 0.4 mg/dL and 1.1 ± 0.5 mg/L, respectively. Multivariate analyses revealed that international normalized ratio and serum bilirubin, sodium, and cystatin C levels were independent predictors of mortality and international normalized ratio and serum sodium and cystatin C levels were independent predictors of the development of HRS-1. Serum creatinine level was not significantly associated with mortality and development of HRS-1 on multivariate analysis. CONCLUSION: Serum cystatin C level was an independent predictor of mortality and development of HRS-1 in patients with cirrhotic ascites, while serum creatinine level was not. Predictive models based on serum cystatin C level instead of serum creatinine level would be more helpful in the assessment of the condition and prognosis of patients with cirrhotic ascites.


Assuntos
Ascite/diagnóstico , Cistatina C/sangue , Cirrose Hepática/diagnóstico , Idoso , Ascite/etiologia , Biomarcadores/sangue , Feminino , Hepatite Viral Humana/complicações , Síndrome Hepatorrenal/etiologia , Humanos , Cirrose Hepática/etiologia , Hepatopatias Alcoólicas/complicações , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Modelos de Riscos Proporcionais , Estudos Prospectivos
11.
Sensors (Basel) ; 18(11)2018 Nov 19.
Artigo em Inglês | MEDLINE | ID: mdl-30463232

RESUMO

The detection of alpha-fetoprotein (AFP) in plasma is important in the diagnosis of hepatocellular carcinoma (HCC) in humans. We developed a biosensor to detect AFP in HCC patient plasma and in a phosphate buffer saline (PBS) solution using a graphene field-effect transistor (G-FET). The G-FET was functionalized with 1-pyrenebutyric acid N-hydroxysuccinimide ester (PBASE) for immobilization of an anti-AFP antibody. AFP was detected by assessing the shift in the voltage of the Dirac point (ΔVDirac) after binding of AFP to the anti-AFP-immobilized G-FET channel surface. This anti-AFP-immobilized G-FET biosensor was able to detect AFP at a concentration of 0.1 ng mL-1 in PBS, and the detection sensitivity was 16.91 mV. In HCC patient plasma, the biosensor was able to detect AFP at a concentration of 12.9 ng mL-1, with a detection sensitivity of 5.68 mV. The sensitivity (ΔVDirac) depended on the concentration of AFP in either PBS or HCC patient plasma. These data suggest that G-FET biosensors could have practical applications in diagnostics.


Assuntos
Carcinoma Hepatocelular/diagnóstico , Técnicas Eletroquímicas/métodos , Grafite/química , Neoplasias Hepáticas/diagnóstico , Transistores Eletrônicos , alfa-Fetoproteínas/análise , Biomarcadores Tumorais/sangue , Técnicas Eletroquímicas/instrumentação , Humanos , Imunoensaio
12.
FASEB J ; 30(12): 4071-4082, 2016 12.
Artigo em Inglês | MEDLINE | ID: mdl-27553225

RESUMO

IGF-binding protein-3 (IGFBP-3) is a liver-derived, anti-inflammatory molecule that is decreased in obesity, a key risk factor for nonalcoholic fatty liver disease (NAFLD). It was not known whether IGFBP-3 levels were altered in NAFLD, whether such alterations could be the result of lipotoxicity, and whether altered IGFBP-3 could affect pathways that are involved in hepatic and systemic inflammation. Serum IGFBP-3 was decreased in patients with NAFLD, whereas liver and circulating IL-8 levels were increased. Palmitate inhibited IGFBP-3 secretion by THP-1 macrophages and enhanced IL-8 expression. Exposure of palmitate-treated THP-1 macrophages to IGFBP-3-deficient conditioned medium led to a 20-fold increase in palmitate-induced IL-8 expression by hepatocytes. Conversely, overexpression of IGFBP-3 suppressed JNK and NF-κB activation and blocked palmitate-induced IL-8 expression in hepatocytes. Silencing IGFBP-3 in Huh7 cells enhanced JNK and NF-κB activity and increased palmitate-induced IL-8 secretion. These data indicate that IGFBP-3 serves as an anti-inflammatory brake in hepatocytes against JNK and NF-κB and limits their activation and downstream production of proinflammatory cytokines. Under lipotoxic conditions, palmitate inhibits hepatic macrophage secretion of IGFBP-3, thereby releasing the brake and enhancing palmitate-induced IL-8 synthesis and secretion.-Min, H.-K., Maruyama, H., Jang, B. K., Shimada, M., Mirshahi, F., Ren, S., Oh, Y., Puri, P., Sanyal, A. J. Suppression of IGF binding protein-3 by palmitate promotes hepatic inflammatory responses.


Assuntos
Regulação da Expressão Gênica/efeitos dos fármacos , Hepatite/metabolismo , Hepatócitos/efeitos dos fármacos , Inflamação/tratamento farmacológico , Proteína 3 de Ligação a Fator de Crescimento Semelhante à Insulina/metabolismo , Macrófagos/efeitos dos fármacos , Palmitatos/farmacologia , Anti-Inflamatórios/farmacologia , Citocinas/metabolismo , Hepatócitos/metabolismo , Humanos , Inflamação/metabolismo , Macrófagos/metabolismo , NF-kappa B/metabolismo , Palmitatos/metabolismo , Fator de Necrose Tumoral alfa/metabolismo
15.
Kidney Int ; 90(6): 1285-1297, 2016 12.
Artigo em Inglês | MEDLINE | ID: mdl-27616741

RESUMO

The hallmark of renal tubulointerstitial fibrosis is the accumulation of myofibroblasts and extracellular matrix proteins. Fyn, a member of the Src family of kinases, has diverse biological functions including regulation of mitogenic signaling and proliferation and integrin-mediated interaction. Src family proteins promote pulmonary fibrosis by augmenting transforming growth factor-ß signaling, but their role in renal fibrosis is less understood. We observed upregulation of Fyn in a renal fibrosis model induced by unilateral ureteral obstruction. Upon ureteral obstruction, Fyn-deficient mice exhibited attenuated renal fibrosis relative to wild-type mice. Furthermore, obstruction-induced renal expression of type I collagen, fibronectin, α-smooth muscle actin, and plasminogen activator inhibitor-1 was suppressed. Pharmacologic inhibition of Fyn blocked induction of extracellular matrix proteins in kidney cell lines. Importantly, the attenuation of renal fibrosis by Fyn deficiency was not accompanied by changes in the Smad pathway. Rather, the antifibrotic effect of Fyn deficiency was associated with downregulation of signal transducer and activator of transcription 3 (STAT3). Small, interfering RNA targeting STAT3 in Fyn-deficient cells further suppressed α-smooth muscle actin expression, whereas a STAT3 activator partially restored plasminogen activator inhibitor-1 expression, indicating that STAT3 signaling is critically involved in this process. Thus, Fyn plays an important role in renal fibrosis. Hence, Fyn kinase inhibitors may be therapeutically useful against renal fibrosis.


Assuntos
Nefroesclerose/metabolismo , Proteínas Proto-Oncogênicas c-fyn/metabolismo , Fator de Transcrição STAT3/metabolismo , Proteínas Quinases Ativadas por AMP/metabolismo , Animais , Caderinas/metabolismo , Receptores ErbB/metabolismo , Proteínas da Matriz Extracelular/metabolismo , Humanos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Nefroesclerose/etiologia , Proteínas Proto-Oncogênicas c-akt/metabolismo , Proteínas Proto-Oncogênicas c-fyn/antagonistas & inibidores , Proteínas Proto-Oncogênicas c-fyn/genética , Proteína Smad3/metabolismo , Fator de Crescimento Transformador beta/metabolismo , Obstrução Ureteral/complicações , Quinases da Família src/metabolismo
16.
Hepatology ; 61(3): 953-64, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25346526

RESUMO

UNLABELLED: The metabolism of glutamine and glucose is recognized as a promising therapeutic target for the treatment of cancer; however, targeted molecules that mediate glutamine and glucose metabolism in cancer cells have not been addressed. Here, we show that restricting the supply of glutamine in hepatoma cells, including HepG2 and Hep3B cells, markedly increased the expression of retinoic acid-related orphan receptor alpha (RORα). Up-regulation of RORα in glutamine-deficient hepatoma cells resulted from an increase in the level of cellular reactive oxygen species and in the nicotinamide adenine dinucleotide phosphate/nicotinamide adenine dinucleotide phosphate reduced (NADP+ /NADPH) ratio, which was consistent with a reduction in the glutathione/glutathione disulfide (GSH/GSSG) ratio. Adenovirus (Ad)-mediated overexpression of RORα (Ad-RORα) or treatment with the RORα activator, SR1078, reduced aerobic glycolysis and down-regulated biosynthetic pathways in hepatoma cells. Ad-RORα and SR1078 reduced the expression of pyruvate dehydrogenase kinase 2 (PDK2) and inhibited the phosphorylation of pyruvate dehydrogenase and subsequently shifted pyruvate to complete oxidation. The RORα-mediated decrease in PDK2 levels was caused by up-regulation of p21, rather than p53. Furthermore, RORα inhibited hepatoma growth both in vitro and in a xenograft model in vivo. We also found that suppression of PDK2 inhibited hepatoma growth in a xenograft model. These findings mimic the altered glucose utilization and hepatoma growth caused by glutamine deprivation. Finally, tumor tissue from 187 hepatocellular carcinoma patients expressed lower levels of RORα than adjacent nontumor tissue, supporting a potential beneficial effect of RORα activation in the treatment of liver cancer. CONCLUSION: RORα mediates reprogramming of glucose metabolism in hepatoma cells in response to glutamine deficiency. The relationships established here between glutamine metabolism, RORα expression and signaling, and aerobic glycolysis have implications for therapeutic targeting of liver cancer metabolism.


Assuntos
Carcinoma Hepatocelular/metabolismo , Glucose/metabolismo , Glutamina/deficiência , Neoplasias Hepáticas/metabolismo , Membro 1 do Grupo F da Subfamília 1 de Receptores Nucleares/fisiologia , Trifosfato de Adenosina/biossíntese , Adulto , Idoso , Carcinoma Hepatocelular/patologia , Linhagem Celular Tumoral , Inibidor de Quinase Dependente de Ciclina p21/fisiologia , Feminino , Glicólise , Humanos , Neoplasias Hepáticas/patologia , Masculino , Pessoa de Meia-Idade , Proteínas Serina-Treonina Quinases/antagonistas & inibidores , Proteínas Serina-Treonina Quinases/fisiologia , Piruvato Desidrogenase Quinase de Transferência de Acetil , Proteína Supressora de Tumor p53/fisiologia
17.
Hepatology ; 60(3): 954-63, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24415445

RESUMO

UNLABELLED: Vasoactive drugs are recommended to be started as soon as possible in suspected variceal bleeding, even before diagnostic endoscopy. However, it is still unclear whether the therapeutic efficacies of the various vasoactive drugs used are comparable. The aim of this prospective, multicenter, randomized, noninferiority trial was to characterize the effects of terlipressin, somatostatin, and octreotide when they are initiated before endoscopic treatment in patients with acute variceal bleeding. Patients with liver cirrhosis and significant upper gastrointestinal bleeding were randomly assigned to receive early administration of terlipressin, somatostatin, or octreotide, followed by endoscopic treatment. Patients with nonvariceal bleeding were excluded after endoscopy. The primary endpoint was 5-day treatment success, defined as control of bleeding without rescue treatment, rebleeding, or mortality, with a noninferiority margin of 0.1. In total, 780 patients with variceal bleeding were enrolled: 261 in the terlipressin group; 259 in the somatostatin group; and 260 in the octreotide group. At the time of initial endoscopy, active bleeding was noted in 43.7%, 44.4%, and 43.5% of these patients, respectively (P=0.748), and treatment success was achieved by day 5 in 86.2%, 83.4%, and 83.8% (P=0.636), with similar rates of control of bleeding without rescue treatment (89.7%, 87.6%, and 88.1%; P=0.752), rebleeding (3.4%, 4.8%, and 4.4%; P=0.739), or mortality (8.0%, 8.9%, and 8.8%; P=0.929). The absolute values of the lower bound of confidence intervals for terlipressin versus somatostatin, terlilpressin versus octreotide, and octreotide versus somatostatin were 0.095, 0.090, and 0.065, respectively. CONCLUSION: Hemostatic effects and safety did not differ significantly between terlipressin, somatostatin, and octreotide as adjuvants to endoscopic treatment in patients with acute gastroesophageal variceal bleeding.


Assuntos
Varizes Esofágicas e Gástricas/tratamento farmacológico , Hemorragia Gastrointestinal/tratamento farmacológico , Lipressina/análogos & derivados , Octreotida/uso terapêutico , Somatostatina/uso terapêutico , Vasoconstritores/uso terapêutico , Doença Aguda , Adulto , Endoscopia Gastrointestinal , Varizes Esofágicas e Gástricas/complicações , Feminino , Hemorragia Gastrointestinal/etiologia , Hemostasia/efeitos dos fármacos , Hemostasia/fisiologia , Humanos , Lipressina/uso terapêutico , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Terlipressina , Falha de Tratamento
18.
Gastrointest Endosc ; 82(2): 299-307, 2015 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25892060

RESUMO

BACKGROUND: The quality of life (QOL) of patients who survive early gastric cancer (EGC) is an area of increasing interest. OBJECTIVE: To compare the QOL and degree of worry of cancer recurrence in EGC patients who underwent endoscopic submucosal dissection (ESD) or surgery. DESIGN: Cross-sectional study. SETTINGS: A tertiary referral center. PATIENTS: A total of 565 patients with EGC who received ESD or surgery. INTERVENTION: Questionnaires. MAIN OUTCOME MEASUREMENTS: QOL was evaluated using the Short-form Health Survey and the European Organization for Research and Treatment of Cancer QOL questionnaires (QLQ-C30 and EORTC-QLQ-STO22). Mood disorders and the worry of cancer recurrence were estimated using the Hospital Anxiety and Depression Scale (HADS) and Worry of Cancer Scale, respectively. RESULTS: Questionnaires were completed by 55.7% of the ESD (137/246) and 58.9% of the surgery (188/319) patients. The surgery group had more QOL-related symptomatic and functional problems, including fatigue (P=.044), nausea/vomiting (P=.032), appetite loss (P=.023), diarrhea (P<.001), pain (P=.013), reflux symptoms (P=.005), eating restrictions (P<.001), anxiety (P=.015), taste impairment (P=.011), and poor body image (P<.001). The ESD group had significantly higher worry of cancer recurrence scores after adjusting for covariates, especially when visiting their physicians. The HADS results did not differ between the groups. LIMITATIONS: Cross-sectional design. CONCLUSIONS: Endoscopic treatment for EGC provides a better QOL, but stomach preservation might provoke cancer recurrence worries. Endoscopists should address this issue for relieving a patient's concern of cancer recurrence during follow-up period after ESD. ( CLINICAL TRIAL REGISTRATION NUMBER: WHO ICTRP KCT0000791.).


Assuntos
Ansiedade/etiologia , Gastroscopia , Recidiva Local de Neoplasia/psicologia , Qualidade de Vida/psicologia , Neoplasias Gástricas/psicologia , Neoplasias Gástricas/cirurgia , Idoso , Apetite , Imagem Corporal , Estudos Transversais , Depressão/etiologia , Diarreia/etiologia , Dissecação/psicologia , Fadiga/etiologia , Feminino , Mucosa Gástrica/cirurgia , Refluxo Gastroesofágico/etiologia , Humanos , Masculino , Pessoa de Meia-Idade , Náusea/etiologia , Dor/etiologia , Escalas de Graduação Psiquiátrica , Neoplasias Gástricas/complicações , Inquéritos e Questionários , Distúrbios do Paladar/etiologia , Vômito/etiologia
19.
Endoscopy ; 47(11): 1018-27, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26182387

RESUMO

BACKGROUND AND STUDY AIMS: High quality bowel preparation is essential for successful colonoscopy. This study aimed to assess the impact of reinforced education by telephone or short message service (SMS) on the quality of bowel preparation. PATIENTS AND METHODS: A prospective, endoscopist-blinded, randomized, controlled study was conducted. Reinforced education groups received additional education via reminders by telephone or SMS 2 days before colonoscopy. The primary outcome was the quality of the bowel preparation according to the Boston Bowel Preparation Scale (BBPS). The secondary outcomes included polyp detection rate (PDR), adenoma detection rate (ADR), tolerance, and subjective feelings of patients. RESULTS: A total of 390 patients were included. Total BBPS score was significantly higher in the reinforced education groups than in the control group (mean [SD] telephone vs. CONTROL: 7.1 [1.2] vs. 6.3 [1.4], P < 0.001; SMS vs. CONTROL: 6.8 [1.3] vs. 6.3 [1.4], P = 0.027). Between the two interventions, there was no significant difference in total BBPS score. PDR and ADR were not different among groups. Reinforced education groups showed lower anxiety and better tolerance compared with controls. A preparation-to-colonoscopy time of > 6 hours and < 80 % of the purgative ingested were independent factors associated with inadequate bowel preparation (BBPS < 5), whereas re-education by telephone was inversely related to inadequate bowel preparation. CONCLUSION: SMS was the optimal education modality, and was as effective as telephone reminders for the quality of bowel preparation. A reinforced educational approach via telephone or SMS should be individualized, depending on the resource availability of each clinical practice. TRIAL REGISTRATION: ClinicalTrials.gov (NCT01911052).


Assuntos
Adenoma/diagnóstico , Neoplasias do Colo/diagnóstico , Pólipos do Colo/diagnóstico , Colonoscopia , Cooperação do Paciente/estatística & dados numéricos , Educação de Pacientes como Assunto/métodos , Telefone , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Aceitação pelo Paciente de Cuidados de Saúde , Estudos Prospectivos , Método Simples-Cego , Envio de Mensagens de Texto , Adulto Jovem
20.
Int J Mol Sci ; 16(11): 26629-43, 2015 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-26561802

RESUMO

Autophagy is a catabolic process involved in cellular homeostasis under basal and stressed conditions. Autophagy is crucial for normal liver physiology and the pathogenesis of liver diseases. During the last decade, the function of autophagy in hepatocellular carcinoma (HCC) has been evaluated extensively. Currently, autophagy is thought to play a dual role in HCC, i.e., autophagy is involved in tumorigenesis and tumor suppression. Recent investigations of autophagy have suggested that autophagy biomarkers can facilitate HCC prognosis and the establishment of therapeutic approaches. In this review, we briefly summarize the current understanding of autophagy and discuss recent evidence for its role in HCC.


Assuntos
Autofagia/genética , Biomarcadores Tumorais/genética , Carcinoma Hepatocelular/genética , Transformação Celular Neoplásica/genética , Regulação Neoplásica da Expressão Gênica , Neoplasias Hepáticas/genética , Proteínas Quinases Ativadas por AMP/genética , Proteínas Quinases Ativadas por AMP/metabolismo , Animais , Proteínas Reguladoras de Apoptose/genética , Proteínas Reguladoras de Apoptose/metabolismo , Proteína Homóloga à Proteína-1 Relacionada à Autofagia , Proteína Beclina-1 , Biomarcadores Tumorais/metabolismo , Carcinoma Hepatocelular/diagnóstico , Carcinoma Hepatocelular/metabolismo , Carcinoma Hepatocelular/patologia , Transformação Celular Neoplásica/metabolismo , Transformação Celular Neoplásica/patologia , Humanos , Peptídeos e Proteínas de Sinalização Intracelular/genética , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Neoplasias Hepáticas/diagnóstico , Neoplasias Hepáticas/metabolismo , Neoplasias Hepáticas/patologia , Alvo Mecanístico do Complexo 1 de Rapamicina , Camundongos , Complexos Multiproteicos/genética , Complexos Multiproteicos/metabolismo , Prognóstico , Proteínas Serina-Treonina Quinases/genética , Proteínas Serina-Treonina Quinases/metabolismo , Transdução de Sinais , Serina-Treonina Quinases TOR/genética , Serina-Treonina Quinases TOR/metabolismo
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