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1.
Korean J Gastroenterol ; 83(3): 111-118, 2024 Mar 25.
Artículo en Inglés | MEDLINE | ID: mdl-38522854

RESUMEN

Background/Aims: This study compared the effectiveness and safety of glecaprevir/pibrentasvir (GLE/PIB) and sofosbuvir/ledipasvir (SOF/LDV) in real-life clinical practice. Methods: The data from genotype 1 or 2 chronic hepatitis C patients treated with GLE/PIB or sofosbuvir + ribavirin or SOF/LDV in South Korea were collected retrospectively. The analysis included the treatment completion rate, sustained virologic response at 12 weeks (SVR12) test rate, treatment effectiveness, and adverse events. Results: Seven hundred and eighty-two patients with genotype 1 or 2 chronic hepatitis C who were treated with GLE/PIB (n=575) or SOF/LDV (n=207) were included in this retrospective study. The baseline demographic and clinical characteristics revealed significant statistical differences in age, genotype, ascites, liver cirrhosis, and hepatocellular carcinoma between the GLE/PIB and SOF/LDV groups. Twenty-two patients did not complete the treatment protocol. The treatment completion rate was high for both regimens without statistical significance (97.7% vs. 95.7%, p=0.08). The overall SVR12 of intention-to-treat analysis was 81.2% vs. 80.7% without statistical significance (p=0.87). The overall SVR12 of per protocol analysis was 98.7% vs. 100% without statistical significance (p=0.14). Six patients treated with GLE/PIB experienced treatment failure. They were all male, genotype 2, and showed a negative hepatitis C virus RNA level at the end of treatment. Two patients treated with GLE/PIB stopped medication because of fever and abdominal discomfort. Conclusions: Both regimens had similar treatment completion rates, effectiveness, and safety profiles. Therefore, the SOF/LDV regimen can also be considered a viable DAA for the treatment of patients with genotype 1 or 2 chronic hepatitis C.


Asunto(s)
Ácidos Aminoisobutíricos , Bencimidazoles , Ciclopropanos , Fluorenos , Hepatitis C Crónica , Lactamas Macrocíclicas , Leucina/análogos & derivados , Neoplasias Hepáticas , Prolina/análogos & derivados , Pirrolidinas , Quinoxalinas , Sulfonamidas , Humanos , Masculino , Sofosbuvir/uso terapéutico , Antivirales/uso terapéutico , Hepatitis C Crónica/tratamiento farmacológico , Hepacivirus/genética , Estudios Retrospectivos , Resultado del Tratamiento , Neoplasias Hepáticas/tratamiento farmacológico , Genotipo , Quimioterapia Combinada
2.
RSC Adv ; 13(44): 31224-31233, 2023 Oct 18.
Artículo en Inglés | MEDLINE | ID: mdl-37886019

RESUMEN

Recently, 11-mercaptoundecanoic acid (MUA) molecule has attracted attention as a promising passivation agent of Ag nanowire (NW) network electrode for corrosion inhibition, but the underneath mechanism has not been elaborated. In this work, we investigate adsorption of MUA molecule on Ag(1 0 0) and Ag(1 1 1) surface, adsorption of air gas molecules of H2O, H2S and O2 on MUA molecular end surface, and their penetrations into the Ag surface using the first-principles calculations. Our calculations reveal that the MUA molecule is strongly bound to the Ag surface with the binding energies ranging from -0.47 to -2.06 eV and the Ag-S bond lengths of 2.68-2.97 Å by Lewis acid-base reaction. Furthermore, we find attractive interactions between the gas molecules and the MUA@Ag complexes upon their adsorptions and calculate activation barriers for their migrations from the outermost end of the complexes to the top of Ag surface. It is found that the penetrations of H2O and H2S are more difficult than the O2 penetration due to their higher activation barriers, while the O2 penetration is still difficult, confirming the corrosion protection of Ag NW network by adsorbing the uniform monolayer of MUA. With these findings, this work can contribute to finding a better passivation agent in the strategy of corrosion protection of Ag NW network electrode.

3.
Korean J Gastroenterol ; 78(5): 300-304, 2021 11 25.
Artículo en Inglés | MEDLINE | ID: mdl-34824189

RESUMEN

Neuroendocrine tumors (NETs) can arise throughout the body. Most NETs in the liver are metastatic tumors; primary hepatic NET (PHNET) is extremely rare. A diagnosis of PHNET is very difficult. No single modality can diagnose PHNET by itself, and it often resembles other hypervascular masses of the liver. This paper reports the case of a 51-year old female with a large hepatic mass. Unlike most of PHNETs reported previously, it was composed of a solid mass with mainly multiple cystic lesions, which led to an erroneous diagnosis of hepatic mucinous cystadenoma or cystadenocarcinoma. PHNET with cystic lesions is extremely rare, and the features are not well studied. This case may help physicians suspect PHNET in a differential diagnosis of an atypical hepatic mass.


Asunto(s)
Tumor Carcinoide , Neoplasias Intestinales , Neoplasias Hepáticas , Tumores Neuroendocrinos , Neoplasias Pancreáticas , Femenino , Humanos , Neoplasias Hepáticas/diagnóstico , Persona de Mediana Edad , Tumores Neuroendocrinos/diagnóstico
4.
Can J Gastroenterol Hepatol ; 2020: 4873875, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32566546

RESUMEN

Background: Nonalcoholic fatty liver disease (NAFLD) may develop into liver cirrhosis and hepatocellular carcinoma (HCC). The aim of this study was to compare the clinical patterns and survival outcomes of NAFLD-related HCC patients and those of alcoholic liver disease (ALD)-related or hepatitis B virus (HBV)-related HCC patients. Methods: A total of 622 HCC patients with associated NAFLD (n = 56), ALD (n = 173), or HBV infection (n = 393) were enrolled. The clinical characteristics and survival were analyzed according to the underlying liver diseases. Results: NAFLD-related HCC patients were more commonly older women and had more metabolic risk factors but were less likely to have cirrhosis and ascites, compared to ALD-related or HBV-related HCC patients. NAFLD-related HCC more often had an infiltrative pattern (P=0.047), a larger tumor (P=0.001), more macrovascular invasion (P=0.022), and exceeded the Milan criteria (P=0.001), but was less frequently diagnosed during tumor surveillance (P=0.025). Survival analysis did not show any difference among NAFLD-related, ALD-related, and HBV-related HCC patients. Furthermore, propensity score matching analysis did not reveal a significant difference in the median survival between the different groups (NAFLD vs. ALD, 14.0 months [95% confidence interval (CI), 2.0-26.0] vs. 13.0 months [95% CI, 0-26.3]; P=0.667, NAFLD vs. HBV, 14.0 months [95% CI, 2.0-26.0] vs. 12.0 months [95% CI, 4.3-17.8]; P=0.573). Conclusions: NAFLD-related HCCs were more often detected at an advanced stage with infiltrative patterns, although they showed no significant difference in survival compared to ALD-related or HBV-related HCCs. A future prospective research should be focused on identifying NAFLD patients who require strict surveillance in order to early detect and timely treat HCC.


Asunto(s)
Carcinoma Hepatocelular/mortalidad , Hepatitis B/mortalidad , Hepatopatías Alcohólicas/mortalidad , Neoplasias Hepáticas/mortalidad , Enfermedad del Hígado Graso no Alcohólico/mortalidad , Anciano , Carcinoma Hepatocelular/etiología , Femenino , Hepatitis B/complicaciones , Virus de la Hepatitis B , Humanos , Hepatopatías Alcohólicas/complicaciones , Neoplasias Hepáticas/etiología , Masculino , Persona de Mediana Edad , Enfermedad del Hígado Graso no Alcohólico/complicaciones , Estudios Retrospectivos , Factores de Riesgo , Análisis de Supervivencia
5.
Korean J Gastroenterol ; 69(5): 298-307, 2017 May 25.
Artículo en Inglés | MEDLINE | ID: mdl-28539035

RESUMEN

BACKGROUND/AIMS: The invasiveness of a liver biopsy and its inconsistent results have prompted efforts to develop noninvasive tools to evaluate the severity of chronic hepatitis. This study was intended to assess the performance of serum biomarkers for predicting liver fibrosis in patients with chronic viral hepatitis. METHODS: A total of 302 patients with chronic hepatitis B or C, who had undergone liver biopsy, were retrospectively enrolled. We investigated the diagnostic accuracy of several clinical factors for predicting advanced fibrosis (F≥3). RESULTS: The study population included 227 patients with chronic hepatitis B, 73 patients with chronic hepatitis C, and 2 patients with co-infection (hepatitis B and C). Histological cirrhosis was identified in 16.2% of the study population. The grade of porto-periportal activity was more correlated with the stage of chronic hepatitis compared with that of lobular activity (r=0.640 vs. r=0.171). Fibrosis stage was correlated with platelet count (r=-0.520), aspartate aminotransferase to platelet ratio index (APRI) (r=0.390), prothrombin time (r=0.376), and albumin (r=-0.357). For the diagnosis of advanced fibrosis, platelet count and APRI were the most predictive variables (AUROC=0.752, and 0.713, respectively). CONCLUSIONS: In a hepatitis B endemic region, platelet count and APRI could be considered as reliable non-invasive markers for predicting fibrosis of chronic viral hepatitis. However, it is necessary to validate the diagnostic accuracy of these markers in another population.


Asunto(s)
Biomarcadores/sangre , Hepatitis B Crónica/diagnóstico , Hepatitis C Crónica/diagnóstico , Cirrosis Hepática/diagnóstico , Adulto , Alanina Transaminasa/sangre , Área Bajo la Curva , Aspartato Aminotransferasas/sangre , Femenino , Hepatitis B Crónica/complicaciones , Hepatitis C Crónica/complicaciones , Humanos , Hígado/patología , Cirrosis Hepática/etiología , Cirrosis Hepática/patología , Masculino , Persona de Mediana Edad , Recuento de Plaquetas , Curva ROC , Estudios Retrospectivos , Sensibilidad y Especificidad , Índice de Severidad de la Enfermedad
6.
BMC Gastroenterol ; 17(1): 46, 2017 Apr 04.
Artículo en Inglés | MEDLINE | ID: mdl-28376711

RESUMEN

BACKGROUND: The long-term clinical outcomes of antiviral therapy for patients with chronic hepatitis C are uncertain in terms of hepatitis C virus (HCV)-related morbidity and mortality according to the response to antiviral therapy. This study aimed to assess the impact of antiviral treatment on the development of HCC and mortality in patients with chronic HCV infection. METHODS: A systematic review was conducted for studies that evaluated the antiviral efficacy for patients with chronic hepatitis C or assessed the development of HCC or mortality between SVR (sustained virologic response) and non-SVR patients. The methodological quality of the enrolled publications was evaluated using Risk of Bias table or Newcastle-Ottawa scale. Random-effect model meta-analyses and meta-regression were performed. Publication bias was assessed. RESULTS: In total, 59 studies (4 RCTs, 15 prospective and 40 retrospective cohort studies) were included. Antiviral treatment was associated with reduced development of HCC (vs. no treatment; OR 0.392, 95% CI 0.275-0.557), and this effect was intensified when SVR was achieved (vs. no SVR, OR: 0.203, 95% CI 0.164-0.251). Antiviral treatment was associated with lower all-cause mortality (vs. no treatment; OR 0.380, 95% CI 0.295-0.489) and liver-specific mortality (OR 0.363, 95% CI 0.260-0.508). This rate was also intensified when SVR was achieved [all-cause mortality (vs. no SVR, OR 0.255, 95% CI 0.199-0.326), liver-specific mortality (OR 0.126, 95% CI 0.094-0.169)]. Sensitivity analyses revealed robust results, and a small study effect was minimal. CONCLUSIONS: In patients with chronic hepatitis C, antiviral therapy can reduce the development of HCC and mortality, especially when SVR is achieved.


Asunto(s)
Antivirales/uso terapéutico , Carcinoma Hepatocelular/prevención & control , Hepatitis C Crónica/tratamiento farmacológico , Neoplasias Hepáticas/prevención & control , Mortalidad , Carcinoma Hepatocelular/etiología , Hepatitis C Crónica/complicaciones , Humanos , Neoplasias Hepáticas/etiología , Respuesta Virológica Sostenida , Resultado del Tratamiento
7.
Clin Gastroenterol Hepatol ; 15(1): 86-92.e1, 2017 01.
Artículo en Inglés | MEDLINE | ID: mdl-27311618

RESUMEN

BACKGROUND & AIMS: Vigorous intravenous fluid resuscitation (IVFR) was reported to reduce post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis in a pilot study. We performed a randomized, double-blind controlled trial to establish whether periprocedural vigorous IVFR reduces the risk of post-ERCP pancreatitis. METHODS: A total of 510 patients with native papilla at 3 tertiary referral centers in Korea were randomly assigned (1:1) to groups given vigorous IVFR (lactated Ringer's solution in an initial bolus of 10 mL/kg before the procedure, 3 mL/kg/h during the procedure, for 8 hours after the procedure, and a post-procedure bolus of 10 mL/kg) or a standard IVFR (lactated Ringer's solution at 1.5 mL/kg/h during and for 8 hours after the procedure). The primary end point of the study was the development of post-ERCP pancreatitis, and the secondary end point was severity of pancreatitis, hyperamylasemia, and fluid overload. RESULTS: The main indications for ERCP were choledocholithiasis (58%) and malignant biliary stricture (27%). Post-ERCP pancreatitis developed in 11 patients in the vigorous IVFR group (4.3%) and 25 patients in the standard IVFR group (9.8%) (relative risk, 0.41; 95% CI, 0.20-0.86; P = .016). Moderate or severe acute pancreatitis occurred in a significantly smaller proportion of patients in the vigorous IVFR group (0.4%) than in the standard IVFR group (2.0%; P = .040). One patient in the vigorous IVFR group developed peripheral edema. CONCLUSIONS: In a double-blind, randomized controlled trial, we found vigorous periprocedural intravenous hydration with lactated Ringer's solution to reduce the incidence and severity of post-ERCP pancreatitis in average-risk and high-risk cases. IVFR is not associated with increased adverse events. ClinicalTrials.gov number: NCT02308891.


Asunto(s)
Colangiopancreatografia Retrógrada Endoscópica/efectos adversos , Soluciones Isotónicas/administración & dosificación , Pancreatitis/prevención & control , Atención Perioperativa/métodos , Adulto , Anciano , Método Doble Ciego , Femenino , Humanos , Incidencia , Corea (Geográfico) , Masculino , Persona de Mediana Edad , Pancreatitis/epidemiología , Pancreatitis/patología , Solución de Ringer , Centros de Atención Terciaria , Resultado del Tratamiento , Adulto Joven
8.
World J Gastroenterol ; 22(41): 9229-9234, 2016 Nov 07.
Artículo en Inglés | MEDLINE | ID: mdl-27895410

RESUMEN

Primary hepatic neuroendocrine carcinoma (NEC) with concurrent occurrence of hepatocellular carcinoma (HCC) of the liver is very rare. Only 8 cases have been reported in the literature. Concurrent occurrence of HCC and NEC in the liver is classified as combined type or collision type by histological distributional patterns; only 2 cases have been reported. Herein, we report a case of collision type concurrent occurrence of HCC and NEC, in which primary hepatic NEC was in only a small portion of the nodule, which is different from the 2 previously reported cases. A 72-year-old male with chronic hepatitis C was admitted to our hospital for a hepatic mass detected by liver computed tomography (CT) at another clinic. Because the nodule was in hepatic segment 3 and had proper radiologic findings for diagnosis of HCC, including enhancement in the arterial phase and wash-out in the portal and delay phases, the patient was treated with laparoscopic left lateral sectionectomy. The pathology demonstrated that the nodule was 2.5 cm and was moderately differentiated HCC. However, a 3 mm-sized focal neuroendocrine carcinoma was also detected on the capsule of the nodule. The tumor was concluded to be a collision type with HCC and primary hepatic NEC. After the surgery, for follow-up, the patient underwent a liver CT every 3 mo. Five multiple nodules were found in the right hepatic lobe on the follow-up liver CT 6 mo post-operatively. As the features of the nodules in the liver CT and MRI were different from that of HCC, a liver biopsy was performed. Intrahepatic recurrent NEC was proven after the liver biopsy, which showed the same pathologic features with the specimen obtained 6 mo ago. Palliative chemotherapy with a combination of etoposide and cisplatin has been administered for 4 months, showing partial response.


Asunto(s)
Carcinoma Hepatocelular/patología , Carcinoma Neuroendocrino/patología , Neoplasias Hepáticas/patología , Neoplasias Primarias Múltiples , Anciano , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Biopsia , Carcinoma Hepatocelular/cirugía , Carcinoma Neuroendocrino/cirugía , Hepatectomía/métodos , Humanos , Inmunohistoquímica , Laparoscopía , Neoplasias Hepáticas/cirugía , Imagen por Resonancia Magnética , Masculino , Recurrencia Local de Neoplasia , Cuidados Paliativos , Resultado del Tratamiento
9.
Gastroenterol Res Pract ; 2016: 7476231, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27656205

RESUMEN

Aim. This study aimed to assess clinical impact of hepatitis C viral load on the development of hepatocellular carcinoma (HCC) and liver-related mortality in HCV-infected patients. Methods. A total of 111 subjects with chronic HCV infection who were available for serum quantitation of HCV RNA were recruited in this retrospective cohort. Cox-proportional hazards models were used to calculate hazard ratio (HR) of developing HCC and liver-related mortality according to serum HCV RNA titers. Results. HCC was developed in 14 patients during follow-up period. The cumulative risk of HCC development was higher in subjects with high HCV RNA titer (log HCV RNA IU/mL > 6) than subjects with low titer (log HCV RNA IU/mL ≦ 6) (HR = 4.63, P = 0.032), giving an incidence rate of 474.1 and 111.5 per 10,000 person-years, respectively. Old age (HR = 9.71, P = 0.014), accompanying cirrhosis (HR = 19.34, P = 0.004), and low platelet count (HR = 13.97, P = 0.009) were other independent risk factors for the development of HCC. Liver-related death occurred in 7 patients. Accompanying cirrhosis (HR = 6.13, P = 0.012) and low albumin level (HR = 9.17, P = 0.002), but not HCV RNA titer, were significant risk factors related to liver-related mortality. Conclusion. Serum HCV RNA titer may be considered an independent risk factor for the development of HCC but not liver-related mortality.

12.
BMC Cancer ; 15: 236, 2015 Apr 08.
Artículo en Inglés | MEDLINE | ID: mdl-25885683

RESUMEN

BACKGROUND: Sorafenib is an orally administered multikinase inhibitor with antiangiogenic and antiproliferative properties. The results of large clinical trials demonstrate that sorafenib prolongs survival and the time to progression of patients with advanced hepatocellular carcinoma (HCC). The aim of the present study was to determine the outcomes of such patients who were routinely treated with sorafenib at multi-institutions in Korea, in contrast to formal clinical trials. METHODS: Between August 2007 and March 2012, patients with advanced HCC in seven referral medical centers in Daejeon-Chungcheong Province of Korea were retrospectively enrolled to evaluate treatment response, survival, and tolerability following administration of sorafenib. The treatment response was assessed in accordance with the Response Evaluation Criteria in Solid Tumor 1.1 guidelines. RESULTS: Among 116 patients, 66 (57%) had undergone treatment for HCC, and 77 (66%) were accompanied with Child-Pugh A cirrhosis. The median duration of sorafenib treatment was 67 days (range 14-452 days). Median overall survival and median time to progression were 141 days and 90 days, respectively. Complete response, partial response, and stable disease were achieved for 0%, 2%, and 29% of patients, respectively. Overall median survival, but not the median time to progression, was significantly shorter for patients with Child-Pugh B cirrhosis compared with those with Child-Pugh A cirrhosis (64 days vs 168 days, P = 0.004). Child-Pugh B cirrhosis (P = 0.024) and a high level of serum alpha-fetoprotein (P = 0.039) were independent risk factors for poor overall survival. Thirty-nine (34%) patients experienced grade 3/4 adverse events such as hand-foot skin reactions and diarrhea that required dose adjustment. CONCLUSIONS: The clinical outcomes of sorafenib-treated patients with advanced HCC were comparable to those reported by formal clinical trial conducted in the Asia-Pacific region. Underlying hepatic dysfunction was the most important risk factor for shorter survival.


Asunto(s)
Antineoplásicos/uso terapéutico , Carcinoma Hepatocelular/tratamiento farmacológico , Carcinoma Hepatocelular/patología , Neoplasias Hepáticas/tratamiento farmacológico , Neoplasias Hepáticas/patología , Niacinamida/análogos & derivados , Compuestos de Fenilurea/uso terapéutico , Inhibidores de Proteínas Quinasas/uso terapéutico , Adulto , Anciano , Anciano de 80 o más Años , Antineoplásicos/efectos adversos , Carcinoma Hepatocelular/etiología , Carcinoma Hepatocelular/mortalidad , Femenino , Humanos , Neoplasias Hepáticas/etiología , Neoplasias Hepáticas/mortalidad , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Niacinamida/efectos adversos , Niacinamida/uso terapéutico , Compuestos de Fenilurea/efectos adversos , Pronóstico , Inhibidores de Proteínas Quinasas/efectos adversos , Estudios Retrospectivos , Factores de Riesgo , Sorafenib , Resultado del Tratamiento
13.
14.
Cancer Genomics Proteomics ; 11(1): 1-12, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24633315

RESUMEN

We report on next-generation transcriptome sequencing results of three human hepatocellular carcinoma tumor/tumor-adjacent pairs. This analysis robustly examined ∼12,000 genes for both expression differences and molecular alterations. We observed 4,513 and 1,182 genes demonstrating 2-fold or greater increase or decrease in expression relative to their normal, respectively. Network analysis of expression data identified the Aurora B signaling, FOXM1 transcription factor network and Wnt signaling pathways pairs being altered in HCC. We validated as differential gene expression findings in a large data set containing of 434 liver normal/tumor sample pairs. In addition to known driver mutations in TP53 and CTNNB1, our mutation analysis identified non-synonymous mutations in genes implicated in metabolic diseases, i.e. diabetes and obesity: IRS1, HMGCS1, ATP8B1, PRMT6 and CLU, suggesting a common molecular etiology for HCC of alternative pathogenic origin.


Asunto(s)
Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/metabolismo , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/metabolismo , Análisis Mutacional de ADN , ADN de Neoplasias/genética , Expresión Génica , Estudio de Asociación del Genoma Completo , Humanos , Mutación , ARN Neoplásico/genética , Transcriptoma
15.
J Med Case Rep ; 8: 72, 2014 Feb 26.
Artículo en Inglés | MEDLINE | ID: mdl-24571585

RESUMEN

INTRODUCTION: Sorafenib, a multikinase inhibitor as a standard of care for advanced hepatocellular carcinoma, may lead endothelial cells to an unstable state by blocking the signaling pathway of vascular endothelial growth factor receptor, which may result in the disruption of the architecture and integrity of the microvasculature, and eventually increase the risk of hemorrhage. Hemobilia is a relatively uncommon condition as a consequence of hepatocellular carcinoma and its risk factors remain uncertain. CASE PRESENTATION: Here we report a unique case of hemobilia occurring in a 55-year-old Korean man with hepatitis B virus-related hepatocellular carcinoma on Barcelona Clinic Liver Cancer advanced stage after seven days of treatment with sorafenib. He had received prior radiation therapy. Endoscopy revealed bleeding from the major duodenal papilla and endoscopic retrograde cholangiography revealed an amorphous filling defect throughout the common bile duct. Blood clots were removed by balloon sweeping and a nasobiliary drainage tube was placed. No further bleeding has been detected as of eight months after discontinuation of sorafenib. CONCLUSION: Sorafenib may increase the risk of biliary bleeding in hepatocellular carcinoma patients who were primed with irradiation, by blocking the signaling pathway of the vascular endothelial growth factor receptor. Therefore, sorafenib should be used with caution in patients with advanced hepatocellular carcinoma, especially when combined with radiation therapy.

16.
Korean J Gastroenterol ; 63(1): 39-41, 2014 Jan 25.
Artículo en Coreano | MEDLINE | ID: mdl-24463287

RESUMEN

Skin metastasis from internal carcinoma rarely occurs and it has an incidence of 0.7% to 9%. Although the prognosis of the skin metastases varies considerably depending on the type of the primary malignancy, presence of metastatic skin cancer usually implies a widespread systemic disease and a high mortality. A 50-year-old Korean male patient visited Dankook University Hospital for evaluation of skin rash on his whole abdomen of about 1 month's duration. He had undergone laparoscopy-assisted distal gastrectomy due to early gastric cancer about 3 months ago. He did not complain of any noticeable symptoms like febrile sense or pruritus. Skin biopsy was performed on the periumbilical area at previous port site and around the scar. Microscopic examination revealed multiple malignant cells in lymphatic spaces, consistent with metastatic carcinoma. He was therefore diagnosed with isolated skin metastasis from early gastric cancer. Because of patient's poor liver function, systemic chemotherapy could not be performed and only best supportive care was provided. Herein, we report a rare case of cellulitis-like skin metastasis from early gastric cancer with a brief review of the literature.


Asunto(s)
Carcinoma/diagnóstico , Neoplasias Gástricas/diagnóstico , Carcinoma/patología , Carcinoma/cirugía , Exantema , Humanos , Queratina-7/metabolismo , Laparoscopía , Metástasis Linfática , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Tomografía de Emisión de Positrones , Neoplasias Cutáneas/metabolismo , Neoplasias Cutáneas/patología , Neoplasias Cutáneas/secundario , Neoplasias Gástricas/patología , Neoplasias Gástricas/cirugía , Tomografía Computarizada por Rayos X
17.
J Clin Gastroenterol ; 48(10): 883-8, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24440936

RESUMEN

BACKGROUND: Nonalcoholic steatohepatitis (NASH) is a hepatic manifestation of metabolic syndrome. We aimed to assess the relationship of metabolic syndrome-associated NASH and insulin resistance (IR), and to define the correlation of chemicometabolic components with different degree of liver histology in NASH subjects. STUDY: Ninety-four subjects with NASH (mean age, 38±14 y; 77% male) were enrolled. IR was calculated using a homeostasis model assessment of insulin resistance (HOMA-IR). Clinical characteristics including IR and accompanying metabolic risk components in NASH subjects were compared with those of 52 diabetics and 21 healthy controls. The relationship between IR and chemicometabolic variables was analyzed according to different clustering of metabolic risk components and the histologic activity. RESULTS: NASH subjects had a stronger association with metabolic syndrome than healthy controls. HOMA-IR was significantly higher in NASH subjects than in healthy controls (4.4±2.5 vs. 1.7±0.6; P<0.001) but not than in diabetics. NASH subjects with metabolic syndrome were more likely to have higher HOMA-IR compared with that of NASH subjects without metabolic syndrome (5.0±2.9 vs. 3.6±1.7; P=0.032). HOMA-IR showed a positive correlation with body mass index (r=0.428, P=0.015) and serum fasting blood sugar (r=0.365, P=0.037). Serum aspartate aminotransferase/alanine aminotransferase ratio (P=0.029) and high-density lipoprotein cholesterol level (P=0.034) were significantly affected according to the degree of fibrotic activity in 41 histology-proven NASH subjects. CONCLUSIONS: NASH subjects showed increased IR with a significant association of metabolic syndrome. The severity of hepatic fibrosis revealed a strong correlation with serum aspartate aminotransferase/alanine aminotransferase ratio and high-density lipoprotein cholesterol level.


Asunto(s)
Resistencia a la Insulina , Cirrosis Hepática/etiología , Hígado/patología , Síndrome Metabólico/complicaciones , Enfermedad del Hígado Graso no Alcohólico/etiología , Adulto , Alanina Transaminasa/sangre , Aspartato Aminotransferasas/sangre , Biomarcadores/sangre , Biopsia , Glucemia/análisis , Femenino , Humanos , Insulina/sangre , Hígado/enzimología , Cirrosis Hepática/sangre , Cirrosis Hepática/patología , Masculino , Síndrome Metabólico/sangre , Síndrome Metabólico/patología , Persona de Mediana Edad , Enfermedad del Hígado Graso no Alcohólico/sangre , Enfermedad del Hígado Graso no Alcohólico/patología , Valor Predictivo de las Pruebas , Estudios Retrospectivos , Factores de Riesgo , Índice de Severidad de la Enfermedad , Adulto Joven
18.
Gastroenterology ; 146(2): 484-96.e4, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24161699

RESUMEN

BACKGROUND & AIMS: Rifaximin is used to treat patients with functional gastrointestinal disorders, but little is known about its therapeutic mechanism. We propose that rifaximin modulates the ileal bacterial community, reduces subclinical inflammation of the intestinal mucosa, and improves gut barrier function to reduce visceral hypersensitivity. METHODS: We induced visceral hyperalgesia in rats, via chronic water avoidance or repeat restraint stressors, and investigated whether rifaximin altered the gut microbiota, prevented intestinal inflammation, and improved gut barrier function. Quantitative polymerase chain reaction (PCR) and 454 pyrosequencing were used to analyze bacterial 16S ribosomal RNA in ileal contents from the rats. Reverse transcription, immunoblot, and histologic analyses were used to evaluate levels of cytokines, the tight junction protein occludin, and mucosal inflammation, respectively. Intestinal permeability and rectal sensitivity were measured. RESULTS: Water avoidance and repeat restraint stress each led to visceral hyperalgesia, accompanied by mucosal inflammation and impaired mucosal barrier function. Oral rifaximin altered the composition of bacterial communities in the ileum (Lactobacillus species became the most abundant) and prevented mucosal inflammation, impairment to intestinal barrier function, and visceral hyperalgesia in response to chronic stress. Neomycin also changed the composition of the ileal bacterial community (Proteobacteria became the most abundant species). Neomycin did not prevent intestinal inflammation or induction of visceral hyperalgesia induced by water avoidance stress. CONCLUSIONS: Rifaximin alters the bacterial population in the ileum of rats, leading to a relative abundance of Lactobacillus. These changes prevent intestinal abnormalities and visceral hyperalgesia in response to chronic psychological stress.


Asunto(s)
Fármacos Gastrointestinales/farmacología , Hiperalgesia/prevención & control , Ileítis/prevención & control , Íleon/efectos de los fármacos , Mucosa Intestinal/efectos de los fármacos , Microbiota/efectos de los fármacos , Rifamicinas/farmacología , Administración Oral , Animales , Biomarcadores/metabolismo , Western Blotting , Citocinas/metabolismo , ADN Bacteriano/análisis , Esquema de Medicación , Fármacos Gastrointestinales/uso terapéutico , Hiperalgesia/etiología , Hiperalgesia/metabolismo , Hiperalgesia/microbiología , Ileítis/etiología , Ileítis/metabolismo , Ileítis/microbiología , Íleon/metabolismo , Íleon/microbiología , Inmunohistoquímica , Mucosa Intestinal/metabolismo , Mucosa Intestinal/microbiología , Masculino , Microbiota/genética , Neomicina/farmacología , Neomicina/uso terapéutico , Ocludina/metabolismo , Ratas , Ratas Wistar , Restricción Física , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Rifamicinas/uso terapéutico , Rifaximina , Análisis de Secuencia de ADN , Estrés Psicológico
19.
Hepatogastroenterology ; 61(135): 2117-22, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25713918

RESUMEN

BACKGROUND/AIMS: The effectiveness of endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) has been established for a definite pathological diagnosis of pancreatic solid masses. We investigated the usefulness of cell block preparations in EUS-FNA, by evaluating the added value of cell block preparations over conventional smears alone. METHODOLOGY: Between March 2011 and June 2013, 61 patients were retrospectively evaluated who underwent EUS-FNA for pancreatic solid masses. Diagnostic values for diagnosing pancreatic malignancy were compared for a combination of the conventional smear and cell block (CSCB) and the conventional smear alone (CS). RESULTS: The addition of the cell block technique increased the sensitivity of conventional smear for diagnosing the pancreatic malignancy from 79% (CS) to 90% (CSCB, p=0.0313) and the accuracy from 81% to 91% (p=0.0313). The specificity and positive predictive value were 100% in both methods. The negative predictive value was increased from 33% (CS) to 50% (CSCB), but this difference was not statistically significant (p=0.0833). CONCLUSION: The addition of the cell block method after a conventional smear may increase the sensitivity and negative predictive value for diagnosing the pancreatic malignancy in patients with pancreatic masses who undergo EUS-FNA. Further study may be warranted to determine whether the cell block method can replace the conventional smear.


Asunto(s)
Biopsia por Aspiración con Aguja Fina Guiada por Ultrasonido Endoscópico/métodos , Neoplasias Pancreáticas/patología , Manejo de Especímenes , Adhesión del Tejido , Anciano , Femenino , Humanos , Masculino , Valor Predictivo de las Pruebas , Pronóstico , Estudios Retrospectivos , Tomografía Computarizada por Rayos X
20.
World J Gastroenterol ; 19(47): 8867-72, 2013 Dec 21.
Artículo en Inglés | MEDLINE | ID: mdl-24379609

RESUMEN

Hepatocellular carcinoma (HCC) is a grave primary liver cancer that has a limited therapeutic option because it is generally diagnosed later in an advanced stage due to its aggressive biologic behavior. The early detection of HCC has a great impact on the treatment efficacy and survival of patients at high risk for cancer. Potential host, environmental, and virus-related risk factors have been introduced. Hepatitis B virus (HBV) is a major cause of end-stage liver diseases such as liver cirrhosis or HCC in endemic areas, and its serologic or virologic status is considered an important risk factor. HCC risk prediction derived from the identification of major risk factors is necessary for providing adequate screening/surveillance strategies to high-risk individuals. Several risk prediction models for HBV-related HCC have been presented recently with simple, efficient, and readily available to use parameters applicable to average- or unknown-risk populations as well as high-risk individuals. Predictive scoring systems of risk estimation to assess HCC development can provide the way to an evidence-based clinical approach for cost- and effort-effective outcomes, capable of inducing a personalized surveillance program according to risk stratification. In this review, the concepts and perspectives of the risk prediction of HCC are discussed through the analysis of several risk prediction models of HBV-related HCC.


Asunto(s)
Antivirales/uso terapéutico , Carcinoma Hepatocelular/prevención & control , Técnicas de Apoyo para la Decisión , Hepatitis B/tratamiento farmacológico , Neoplasias Hepáticas/prevención & control , Carcinoma Hepatocelular/virología , Hepatitis B/complicaciones , Hepatitis B/diagnóstico , Humanos , Neoplasias Hepáticas/virología , Valor Predictivo de las Pruebas , Medición de Riesgo , Factores de Riesgo , Resultado del Tratamiento
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