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1.
Surg Laparosc Endosc Percutan Tech ; 33(2): 147-151, 2023 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-36977323

RESUMO

BACKGROUND: Up to 70% of the cases of biliary strictures are cholangiocarcinoma. Cholangiocarcinoma has a late diagnosis and poor outcomes; therefore, effective biomarkers are needed for malignant lesions detection at earlier stages. AIM: The aim was to assess the diagnostic utility of bile pyruvate kinase M2 (PKM2) as a biomarker for the detection of malignant biliary strictures in patients with an indeterminate biliary stricture. MATERIALS AND METHODS: This is a prospective study to evaluate the diagnostic value of bile PKM2 for the diagnosis of malignant biliary strictures. Bile samples were collected during Endoscopic Retrograde Cholangio Pancreatography to quantify PKM2 levels and were used to compare their diagnostic value with biliary brush cytology, endoscopic ultrasound-guided fine needle biopsy, or clinical follow-up. RESULTS: Forty-six patients were recruited for the study; 19 patients with malignant strictures and 27 with benign biliary strictures. The bile PKM2 levels were elevated in patients with malignant biliary strictures [median 0.045 ng/mL (IQR 0.014 to 0.092)] compared with those with benign strictures [median 0.019 ng/mL (IQR 0.00 to 0.047)]. Bile PKM2 had a receiver-operating characteristic curve of 0.66 (0.49 to 0.83) with a cutoff value of bile PKM2 of 0.0017 ng/mL. The sensitivity and specificity of bile PKM2 for the diagnosis of cholangiocarcinoma were 89% and 26%; the positive and negative predictive values were 46% and 78%, respectively. CONCLUSION: In patients with indeterminate biliary strictures, bile PKM2 may be a potential biomarker for the diagnosis of malignancy.


Assuntos
Neoplasias dos Ductos Biliares , Colangiocarcinoma , Colestase , Humanos , Constrição Patológica , Piruvato Quinase , Bile , Neoplasias dos Ductos Biliares/complicações , Neoplasias dos Ductos Biliares/diagnóstico , Neoplasias dos Ductos Biliares/patologia , Estudos Prospectivos , Colangiocarcinoma/diagnóstico , Colestase/diagnóstico , Colestase/etiologia , Colangiopancreatografia Retrógrada Endoscópica , Sensibilidade e Especificidade , Ductos Biliares Intra-Hepáticos
2.
Endosc Int Open ; 9(6): E796-E801, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34079860

RESUMO

Background and study aims Several Latin American countries, including Mexico, have reported an increase in colorectal cancer (CRC) mortality. The effectiveness of a colonoscopy in preventing CRC depends on the quality of the procedure, for which the adenoma detection rate (ADR) is one of the most trusted indicators. Awareness of ADR can improve the quality of colonoscopies through proper feedback and training of the specialists. The goal of this study was to estimate the ADR among Mexican endoscopists with experience in CRC screening and to compare it with previously reported data from this country. Methods We carried out a retrospective study to analyze ADR data in Mexico. The information was obtained from a group of certified endoscopists and compared with the former published data from Mexico. Results We found a current ADR of 24.6 % (95 %CI, 22.4 %-26.8 %) from 1,478 colonoscopies performed by eight endoscopists in two third-level private hospitals. The average ADR reported in previous publications was 15.2 % (95 %CI, 13.3 %-17.1 %). Statistical analysis showed differences between our results and those from previous studies (24.6 % vs. 15.2 %, P  < 0.001). Conclusions The actual ADR in Mexico is higher than previously reported. Previous low ADR values could be explained by poorly performed colonoscopies rather than by low adenoma and CRC incidence in our country.

3.
BMC Gastroenterol ; 21(1): 201, 2021 May 03.
Artigo em Inglês | MEDLINE | ID: mdl-33941087

RESUMO

BACKGROUND: The clinical endoscopic phenotypes of gastroesophageal reflux disease (GERD) are classified as Barrett's esophagus (BE), erosive esophagitis (EE) and non-erosive gastroesophageal reflux disease (NERD). NERD is subclassified as abnormal acid exposure (AAE) and normal acid exposure (NAE) based on pH monitoring study results. The aim of this study was to characterize genes involved in the pathophysiology and immune response of GERD. METHODS: This is an observational and cross-sectional study. All patients with BE, EE, AAE, and NAE and a control group were subjected to superior endoscopy (with biopsies of esophageal mucosa). Relative mRNA quantification of cytokine and target genes was conducted by quantitative Polymerase Chain Reaction (RT-qPCR). Changes in the expression of genes associated with inflammation were assessed for each disease phenotype. Statistical analysis of differential gene expression was performed using the Mann-Whitney U non-parametric test. A p value < 0.05 was considered significant. RESULTS: A total of 82 patients were included and were divided into the following groups: Group BE, 16 (19.51%); Group EE, 23 (28.04%); Group AAE, 13 (15.86%); NAE 13 (15.86%); and Control Group, 17 (20.73%). Compared with the control group, patients with BE exhibited increased IL-8 expression (p < 0.05) and increased levels of IL-10, MMP-3, and MMP-9. Patients with EE exhibited increased levels of IL-1B, IL-6 and IL-10 (p < 0.05), and patients with AAE exhibited increased expression of IL-1B, IL-6, IFN-γ and TNF-α (p < 0.05). AAE exhibited increased IL-1B and TNF-α expression compared with NAE (p < 0.05). CONCLUSION: This study demonstrates the differential expression of mediators of inflammation in the esophageal mucosa of patients with different GERD endoscopic phenotypes. IL-1B and TNF-α could be useful to differentially diagnose AAE and NAE in the non-erosive phenotype using endoscopic biopsies.


Assuntos
Citocinas , Refluxo Gastroesofágico , Biópsia , Estudos Transversais , Citocinas/genética , Refluxo Gastroesofágico/genética , Perfilação da Expressão Gênica , Humanos , Fenótipo
4.
F1000Res ; 9: 56, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32595949

RESUMO

Background: Nonalcoholic fatty liver disease (NAFLD) is a serious worldwide health problem, with an estimated global prevalence of 24%; it has a notable relationship with other metabolic disorders, like obesity and type 2 diabetes mellitus (T2DM). Nonalcoholic steatohepatitis (NASH) is one of the most important clinical entities of NAFLD, which is associated with an increased risk of progression to liver cirrhosis and hepatocellular carcinoma (HCC). Mexico is one of the countries with the highest prevalence of metabolic diseases; therefore, we sought to investigate the impact that these clinical entities have in the progression to advanced fibrosis in Mexican patients with NASH. Methods: We performed a multicenter retrospective cross-sectional study, from January 2012 to December 2017. A total of 215 patients with biopsy-proven NASH and fibrosis were enrolled. NASH was diagnosed according NAS score and liver fibrosis was staged by the Kleiner scoring system. For comparing the risk of liver fibrosis progression, we divided our sample into two groups. Those patients with stage F0-F2 liver fibrosis were included in the group with non-significant liver fibrosis (n=178) and those individuals with F3-F4 fibrosis were included in the significant fibrosis group (n=37). We carried out a multivariate analysis to find risk factors associated with liver fibrosis progression. Results: From the 215 patients included, 37 had significant liver fibrosis (F3-4). After logistic regression analysis T2DM (p=0.044), systemic arterial hypertension (p=0.014), cholesterol (p=0.041) and triglycerides (p=0.015) were the main predictor of advanced liver fibrosis. Conclusions: In a Mexican population, dyslipidemia was the most important risk factor associated with advanced liver fibrosis and cirrhosis.


Assuntos
Dislipidemias/complicações , Cirrose Hepática/epidemiologia , Hepatopatia Gordurosa não Alcoólica , Adulto , Idoso , Carcinoma Hepatocelular , Estudos Transversais , Diabetes Mellitus Tipo 2 , Feminino , Humanos , Cirrose Hepática/complicações , Neoplasias Hepáticas , Masculino , México/epidemiologia , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/complicações , Hepatopatia Gordurosa não Alcoólica/epidemiologia , Estudos Retrospectivos , Fatores de Risco
5.
World J Clin Cases ; 6(15): 922-930, 2018 Dec 06.
Artigo em Inglês | MEDLINE | ID: mdl-30568947

RESUMO

AIM: To investigate the main current etiologies of cirrhosis in Mexico. METHODS: We performed a cross-sectional retrospective multicenter study that included eight hospitals in different areas of Mexico. These hospitals provide health care to people of diverse social classes. The inclusion criteria were a histological, clinical, biochemical, endoscopic, or imaging diagnosis of liver cirrhosis. Data were obtained during a 5-year period (January 2012-December 2017). RESULTS: A total of 1210 patients were included. The mean age was 62.5 years (SD = 12.1), and the percentages of men and women were similar (52.0% vs 48.0%). The most frequent causes of liver cirrhosis were hepatitis C virus (HCV) (36.2%), alcoholic liver disease (ALD) (31.2%), and nonalcoholic steatohepatitis (23.2%), and the least frequent were hepatitis B virus (1.1%), autoimmune disorders (7.3%), and other conditions (1.0%). CONCLUSION: HCV and ALD are the most frequent causes of cirrhosis in Mexico. However, we note that non-alcoholic fatty liver disease (NAFLD) as an etiology of cirrhosis increased by 100% compared with the rate noted previously. We conclude that NAFLD will soon become one of the most frequent etiologies of liver cirrhosis in Mexico.

6.
Ann Hepatol ; 17(3): 476-481, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29735798

RESUMO

INTRODUCTION AND AIM: Thrombosis is a vascular disorder of the liver often associated with significant morbidity and mortality. Cirrhosis is a predisposing factor for portal venous system thrombosis. The aim of this study is to determine differences between cirrhotics and non-cirrhotics that develop thrombosis in portal venous system and to evaluate if cirrhosis severity is related to the development of portal venous system thrombosis. MATERIAL AND METHODS: We studied patients diagnosed with portal venous system thrombosis using contrast-enhanced computed tomography scan and doppler ultrasound at Medica Sur Hospital from 2012 to 2017. They were categorized into two groups; cirrhotics and non-cirrhotics. We assessed the hepatic function by Child-Pugh score and model for end-stage liver disease. RESULTS: 67 patients with portal venous system thrombosis (25 with non-cirrhotic liver and 42 with cirrhosis) were included. The mean age (± SD) was 65 ± 9.5 years in cirrhotic group and 57 ± 13.2 years (p = 0.009) in non-cirrhotic group. Comparing non-cirrhotics and cirrhotics, 8 non-cirrhotic patients showed evidence of extra-hepatic inflammatory conditions, while in the cirrhotic group no inflammatory conditions were found (p < 0.001). 27 (64.29%) cirrhotic patients had thrombosis in the portal vein, while only 9 cases (36%) were found in non-cirrhotics (p = 0.02). CONCLUSIONS: In cirrhotic patients, hepatocellular carcinoma and cirrhosis were the strongest risk factors to develop portal venous system thrombosis. In contrast, extrahepatic inflammatory conditions were main risk factors associated in non-cirrhotics. Moreover, the portal vein was the most frequent site of thrombosis in both groups.


Assuntos
Carcinoma Hepatocelular/complicações , Cirrose Hepática/complicações , Neoplasias Hepáticas/complicações , Veia Porta , Trombose Venosa/etiologia , Idoso , Carcinoma Hepatocelular/diagnóstico por imagem , Estudos Transversais , Feminino , Humanos , Cirrose Hepática/diagnóstico por imagem , Neoplasias Hepáticas/diagnóstico por imagem , Masculino , México , Pessoa de Meia-Idade , Flebografia/métodos , Veia Porta/diagnóstico por imagem , Estudos Retrospectivos , Fatores de Risco , Índice de Gravidade de Doença , Tomografia Computadorizada por Raios X , Ultrassonografia Doppler , Trombose Venosa/diagnóstico por imagem
7.
Endoscopy ; 49(11): 1061-1068, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-28898920

RESUMO

Background and study aim Different techniques have been introduced to improve the endoscopist's view and enhance the detection of polyps. The endocuff is a polymer sleeve cap that is connected to the tip of the colonoscope in order to improve visualization of the mucosa during colonoscopy. The aim of the study was to compare adenoma detection rates (ADR) of endocuff-assisted colonoscopy and conventional colonoscopy. Patients and methods Patients 50 years or older were randomized into two groups: an endocuff-assisted colonoscopy group and a conventional colonoscopy group without the endocuff. Results A total of 337 patients were included: 174 in the endocuff group and 163 in the conventional group. The median age was 61 years (interquartile range 55 - 70 years), and 74 % were women. The ADR was higher in the endocuff group than in the conventional group (22.4 % vs. 13.5 %; P = 0.02). The mean number of adenomas was 0.30 (SD 0.25) in the endocuff group and 0.21 (SD 0.26) in the conventional group (P â€Š= 0.02). The rate of ileal intubation was lower in the endocuff group (73 % vs. 87 %; P < 0.001). No serious adverse events occurred with the use of the endocuff. Conclusions Endocuff colonoscopy achieved a greater ADR than conventional colonoscopy.Trial registered at ClinicalTrials.gov (NTC02387593).


Assuntos
Adenocarcinoma/diagnóstico por imagem , Adenoma/diagnóstico por imagem , Pólipos do Colo/diagnóstico por imagem , Colonoscopia/instrumentação , Neoplasias Colorretais/diagnóstico por imagem , Idoso , Colonoscopia/efeitos adversos , Detecção Precoce de Câncer/instrumentação , Feminino , Humanos , Íleo , Intubação Gastrointestinal , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
8.
Ann Hepatol ; 16(4): 565-568, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28611259

RESUMO

PURPOSE: To investigate the prevalence, related risk factors, and survival of intrahepatic cholangiocarcinoma in a Mexican population. MATERIAL AND METHODS: We conducted a cross-sectional study at Medica Sur Hospital in Mexico City with approval of the local research ethics committee. We found cases by reviewing all clinical records of in-patients between October 2005 and January 2016 who had been diagnosed with malignant liver tumors. Clinical characteristics and comorbidities were obtained to evaluate the probable risk factors and the Charlson index. The cases were staged based on the TNM staging system for bile duct tumors used by the American Joint Committee on Cancer and median patient survival rates were calculated using the Kaplan-Meier method. RESULTS: We reviewed 233 cases of hepatic cancer. Amongst these, hepatocellular carcinomas represented 19.3% (n = 45), followed by intrahepatic cholangiocarcinomas, which accounted for 7.7% (n = 18). The median age of patients with intrahepatic cholangiocarcinoma was 63 years, and most of them presented with cholestasis and intrahepatic biliary ductal dilation. Unfortunately, 89% (n = 16) of them were in an advanced stage and 80% had multicentric tumors. Median survival was 286 days among patients with advanced stage tumors (25th-75th interquartile range, 174-645 days). No correlation was found between the presence of comorbidities defined by the Charlson index, and survival. We evaluated the presence of definite and probable risk factors for the development of intrahepatic cholangiocarcinoma, that is, smoking, alcohol consumption, and primary sclerosing cholangitis. DISCUSSION: We found an overall prevalence of intrahepatic cholangiocarcinoma of 7.7%; unfortunately, these patients were diagnosed at advanced stages. Smoking and primary sclerosing cholangitis were the positive risk factors for its development in this population.


Assuntos
Neoplasias dos Ductos Biliares/epidemiologia , Colangiocarcinoma/epidemiologia , Idoso , Consumo de Bebidas Alcoólicas/efeitos adversos , Consumo de Bebidas Alcoólicas/epidemiologia , Neoplasias dos Ductos Biliares/mortalidade , Neoplasias dos Ductos Biliares/patologia , Neoplasias dos Ductos Biliares/terapia , Colangiocarcinoma/mortalidade , Colangiocarcinoma/patologia , Colangiocarcinoma/terapia , Colangite Esclerosante/epidemiologia , Comorbidade , Estudos Transversais , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , México/epidemiologia , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prevalência , Estudos Retrospectivos , Fatores de Risco , Fumar/efeitos adversos , Fumar/epidemiologia , Fatores de Tempo , Resultado do Tratamento
9.
Ann Hepatol ; 15(6): 895-901, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27740523

RESUMO

Background. The Rockall, Glasgow-Blatchford, and AIMS65 are useful and validated scoring systems for predicting the outcomes of patients with nonvariceal gastrointestinal bleeding. However, there are no validated evidence for using them to predict outcomes on variceal bleeding. The aim of this study was to evaluate and compare the prognostic accuracy of different nonvariceal bleeding scores with other liver-specific scoring systems in cirrhotic patients. MATERIAL AND METHODS: A retrospective multicenter study that included 160 cirrhotic patients with acute variceal bleeding. The AUROC's to predict in-hospital mortality, and rebleeding, were analyzed for each scoring system. RESULTS: Overall in-hospital mortality occurred in 13% and in-hospital rebleeding in 12% of patients. The systems with the best AUROC value for predicting mortality were MELD (0.828; 95% CI 0.748-0.909), and AIMS65 (0.817; 95% CI 0.724-0.909). The best score systems for predicting rebleeding were Glasgow-Blatchford (0.756; 95% CI 0.640- 0.827), and Rockall (0.691; 95% CI 0.580-0.802). CONCLUSIONS: In addition to liver-specific scores, the AIMS65 score is accurate for predicting in-hospital mortality in cirrhotic patients with acute variceal bleeding. Other scoring systems might be useful for predicting significant clinical outcomes in these patients.


Assuntos
Técnicas de Apoio para a Decisão , Varizes Esofágicas e Gástricas/etiologia , Hemorragia Gastrointestinal/etiologia , Cirrose Hepática/complicações , Adulto , Idoso , Área Sob a Curva , Varizes Esofágicas e Gástricas/diagnóstico , Varizes Esofágicas e Gástricas/mortalidade , Feminino , Hemorragia Gastrointestinal/diagnóstico , Hemorragia Gastrointestinal/mortalidade , Mortalidade Hospitalar , Humanos , Cirrose Hepática/diagnóstico , Cirrose Hepática/mortalidade , Masculino , México , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Curva ROC , Recidiva , Reprodutibilidade dos Testes , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Fatores de Tempo
10.
Metabolism ; 65(8): 1196-207, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-26435078

RESUMO

Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease worldwide. NAFLD is strongly associated with obesity and metabolic syndrome (MetS). Current treatment of NAFLD is based on weight reduction. Bariatric surgery is the most effective treatment for morbid obesity and its associated metabolic comorbidities. There is evidence indicating that bariatric surgery improves histological and biochemical parameters of NAFLD, but currently is not considered a treatment option for NAFLD. The aim of this work is to review the evidence for the effects of bariatric surgery on NAFLD and the MetS. We found that insulin resistance, alterations in glucose metabolism, hypertension, plasma lipids, transaminases, liver steatosis, steatohepatitis and fibrosis improve after bariatric surgery. Weight loss and improvement of NAFLD are greater after RYGB than after other interventions. These findings were obtained from retrospective or cohort studies. There are no studies designed to evaluate liver-specific mortality, liver transplantation, or quality of life. Patients with indications for bariatric surgery will benefit from the improvements in the MetS and NAFLD.


Assuntos
Cirurgia Bariátrica , Fígado/patologia , Síndrome Metabólica/cirurgia , Hepatopatia Gordurosa não Alcoólica/cirurgia , Obesidade Mórbida/cirurgia , Humanos , Resistência à Insulina , Lipídeos/sangue , Fígado/metabolismo , Síndrome Metabólica/metabolismo , Síndrome Metabólica/patologia , Hepatopatia Gordurosa não Alcoólica/metabolismo , Hepatopatia Gordurosa não Alcoólica/patologia , Obesidade Mórbida/metabolismo , Obesidade Mórbida/patologia , Resultado do Tratamento
12.
Biomed Res Int ; 2015: 768071, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26339640

RESUMO

Nonalcoholic fatty liver disease (NAFLD) is the most frequent cause of chronic liver disease. NAFLD encompasses a wide range of pathologies, from simple steatosis to steatosis with inflammation to fibrosis. The pathogenesis of NAFLD progression has not been completely elucidated, and different liver cells could be implicated. This review focuses on the current evidence of the role of liver dendritic cells (DCs) in the progression from NAFLD to fibrosis. Liver DCs are a heterogeneous population of hepatic antigen-presenting cells; their main function is to induce T-cell mediated immunity by antigen processing and presentation to T cells. During the steady state liver DCs are immature and tolerogenic. However, in an environment of chronic inflammation, DCs are transformed to potent inducers of immune responses. There is evidence about the role of DC in liver fibrosis, but it is not clearly understood. Interestingly, there might be a link between lipid metabolism and DC function, suggesting that immunogenic DCs are associated with liver lipid storage, representing a possible pathophysiological mechanism in NAFLD development. A better understanding of the interaction between inflammatory pathways and the different cell types and the effect on the progression of NAFLD is of great relevance.


Assuntos
Células Dendríticas/patologia , Inflamação/patologia , Cirrose Hepática/patologia , Hepatopatia Gordurosa não Alcoólica/patologia , Células Dendríticas/metabolismo , Progressão da Doença , Humanos , Inflamação/metabolismo , Metabolismo dos Lipídeos , Fígado/metabolismo , Fígado/patologia , Cirrose Hepática/metabolismo , Hepatopatia Gordurosa não Alcoólica/etiologia , Hepatopatia Gordurosa não Alcoólica/metabolismo , Obesidade/metabolismo , Obesidade/patologia
13.
Mini Rev Med Chem ; 15(14): 1187-94, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26156419

RESUMO

Non-alcoholic fatty liver disease encompasses a spectrum of pathologies ranging from simple steatosis to non-alcoholic steatohepatitis. Patients with non-alcoholic steatohepatitis have increased risk of cirrhosis, liver failure and hepatocellular carcinoma. About 25% of subjects with simple steatosis progress to steatohepatitis; nowadays, the detailed pathological factors influencing the progression of non-alcoholic fatty liver disease remains unclear. It is proposed that genetic and environmental factors interact to determine the disease phenotype. Epigenetics could explain some relationships between genes and external influences. The epigenetic changes that have been related to non-alcoholic fatty liver disease are DNA methylation, onecarbon metabolism, histone modifications and the presence of micro-RNA. DNA methylation and micro-RNAs have been investigated in human samples, whereas histone modifications have only been studied until now in animal and cellular models. The aim of this study is to review the most relevant information about epigenetic changes in non-alcoholic steatohepatitis.


Assuntos
Progressão da Doença , Epigênese Genética , Hepatopatia Gordurosa não Alcoólica/genética , Hepatopatia Gordurosa não Alcoólica/patologia , Animais , Metilação de DNA/genética , Humanos
14.
Ann Hepatol ; 14(4): 487-93, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26019035

RESUMO

BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease. Patients with non-alcoholic steatohepatitis (NASH) have increased plasmatic and hepatic concentrations of bile acids (BA), suggesting that they can be associated with the progression of the disease. Hepatic nuclear receptors are known to modulate genes controlling BA metabolism; thus, in this work we aimed to compare the expression of liver nuclear receptors -farnesoid X (FXR), small heterodimer partner (SHP) and liver X alpha (LXRα) receptors- and BA transporters -sodium+/taurocholate cotransporting polypeptide (NTCP) and bile salt export pump (BSEP)- in liver biopsy samples of patients with simple steatosis (SS) and NASH. MATERIAL AND METHODS: Forty patients with biopsy-proven NALFD were enrolled between 2009 and 2012; liver biopsies were classified as SS (N = 20) or NASH (N = 20) according to the NAFLD activity score. Gene expression of nuclear FXR, LXRα, SHP, NTCP and BSEP was analyzed by real-time reverse transcription polymerase chain reaction and protein level was quantified by western blot. RESULTS: Gene expression of FXR, SHP, NTCP and BSEP was significantly up-regulated in the NASH group in comparison with SS patients (P < 0.05). In contrast, protein level for FXR, SHP and NTCP was decreased in the NASH patients vs. the SS group (P < 0.05). Gene and protein profile of LXRα did not show differences between groups. CONCLUSIONS: The results suggest that liver nuclear receptors (FXR and SHP) and BA transporters (NTCP and BSEP) are associated with the progression of NAFLD.


Assuntos
Transportadores de Cassetes de Ligação de ATP/análise , Fígado/química , Hepatopatia Gordurosa não Alcoólica/metabolismo , Receptores Nucleares Órfãos/análise , Receptores Citoplasmáticos e Nucleares/análise , Membro 11 da Subfamília B de Transportadores de Cassetes de Ligação de ATP , Transportadores de Cassetes de Ligação de ATP/genética , Adulto , Biópsia , Western Blotting , Progressão da Doença , Feminino , Perfilação da Expressão Gênica/métodos , Humanos , Fígado/patologia , Receptores X do Fígado , Masculino , Pessoa de Meia-Idade , Hepatopatia Gordurosa não Alcoólica/diagnóstico , Hepatopatia Gordurosa não Alcoólica/genética , Receptores Nucleares Órfãos/genética , Reação em Cadeia da Polimerase em Tempo Real , Receptores Citoplasmáticos e Nucleares/genética , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Índice de Gravidade de Doença , Membro 3 da Família 12 de Carreador de Soluto/análise , Membro 3 da Família 12 de Carreador de Soluto/genética , Regulação para Cima
16.
Rev Recent Clin Trials ; 9(3): 148-58, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25514910

RESUMO

Nonalcoholic fatty liver disease (NAFLD) is an important cause of chronic liver disease; including simple steatosis, steatohepatitis, fibrosis, or cirrhosis. The metabolic syndrome (MS) is the existence of metabolic alterations that confer an increased risk for developing cardiovascular disease and diabetes. NAFLD and MS frequently coexist and 90% of NAFLD patients have more than one manifestation of the MS. In addition, both entities are related to other comorbid conditions. Scientific advances in the understanding of the association between NAFLD and the MS have identified insulin resistance as a key aspect in the pathophysiology of both diseases. Knowledge gained from these advances can be applied clinically in the management and prevention of NAFLD, the MS, and associated metabolic alterations. Cardiovascular disease is the leading cause of death in patients with NAFLD and the MS, therefore adequate diagnosis and effective treatment are critical. This review analyzes current evidence of the association between NAFLD and the MS. The growing prevalence of both entities is highlighted. Next, the common mechanisms leading to insulin resistance are discussed. Manifestations and diagnosis of the MS and NAFLD are reviewed, pointing out the associated comorbid conditions shared by both diseases. Finally, a brief overview regarding NAFLD treatment is presented.


Assuntos
Síndrome Metabólica , Hepatopatia Gordurosa não Alcoólica , Humanos , Resistência à Insulina , Síndrome Metabólica/complicações , Síndrome Metabólica/diagnóstico , Síndrome Metabólica/metabolismo , Síndrome Metabólica/terapia , Hepatopatia Gordurosa não Alcoólica/complicações , Hepatopatia Gordurosa não Alcoólica/diagnóstico , Hepatopatia Gordurosa não Alcoólica/metabolismo , Hepatopatia Gordurosa não Alcoólica/terapia
17.
Cir Cir ; 82(6): 680-5, 2014.
Artigo em Espanhol | MEDLINE | ID: mdl-25393868

RESUMO

BACKGROUND: Portal hypertensive biliopathy is an underdiagnosed condition because only some patients have symptoms. The major clinical manifestations include cholestasis and cholangitis. The aim of this study is to present a series of cases evaluated, treated and followed at a tertiary-care public institution. CLINICAL CASE: Four patients with portal hypertensive biliopathy were exposed to different therapeutic approaches focused on the management of portal hypertension and biliary decompression. They were followed for ~5 years. Three cases achieved a favorable outcome with symptom remission, but one patient died while attempting dilatation of the bile duct. Finally, we carried out a literature review about actual portal hypertensive biliopathy therapeutics. CONCLUSIONS: There is currently no consensus on the optimal treatment for this condition. The goal is to decompress the biliary tree. Each case should be individually evaluated to choose the best treatment option.


Antecedentes: la biliopatía por hipertensión portal es poco diagnosticada debido a que sólo algunos pacientes experimentan síntomas. Las manifestaciones clínicas más importantes son la colestasis y la colangitis. Objetivo: comunicar una serie de casos evaluados, tratados y seguidos en una institución pública de tercer nivel. Casos clínicos: cuatro pacientes con biliopatía por hipertensión portal se expusieron a diferentes métodos para tratar la hipertensión portal y la descompresión de la vía biliar. Se realizó seguimiento durante casi cinco años. Tres casos mostraron adecuada evolución, con remisión de los síntomas; un paciente falleció al intentar dilatarle la vía biliar. Finalmente, se revisa la bibliografía en relación con la terapéutica de la biliopatía por hipertensión portal. Conclusiones: no existe consenso para el tratamiento óptimo de este padecimiento, aunque el objetivo es descomprimir la vía biliar; cada caso plantea particularidades que guían el tratamiento.


Assuntos
Doenças dos Ductos Biliares/etiologia , Doenças dos Ductos Biliares/terapia , Hipertensão Portal/complicações , Adolescente , Adulto , Evolução Fatal , Humanos , Fígado , Masculino , Adulto Jovem
18.
Ann Hepatol ; 13 Suppl 1: S4-40, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24998696

RESUMO

Hepatocellular carcinoma (HCC) is the fifth most common cancer in the world and the third most common cause of cancer death, and accounts for 5.6% of all cancers. Nearly 82% of the approximately 550,000 liver cancer deaths each year occur in Asia. In some regions, cancer-related death from HCC is second only to lung cancer. The incidence and mortality of HCC are increasing in America countries as a result of an ageing cohort infected with chronic hepatitis C, and are expected to continue to rise as a consequence of the obesity epidemic. Clinical care and survival for patients with HCC has advanced considerably during the last two decades, thanks to improvements in patient stratification, an enhanced understanding of the pathophysiology of the disease, and because of developments in diagnostic procedures and the introduction of novel therapies and strategies in prevention. Nevertheless, HCC remains the third most common cause of cancer-related deaths worldwide. These LAASL recommendations on treatment of hepatocellular carcinoma are intended to assist physicians and other healthcare providers, as well as patients and other interested individuals, in the clinical decision-making process by describing the optimal management of patients with liver cancer.


Assuntos
Carcinoma Hepatocelular/mortalidade , Carcinoma Hepatocelular/terapia , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/terapia , Guias de Prática Clínica como Assunto , Alcoolismo/diagnóstico , Alcoolismo/epidemiologia , Carcinoma Hepatocelular/diagnóstico , Terapia Combinada , Países em Desenvolvimento , Detecção Precoce de Câncer , Feminino , Hepatite C Crônica/diagnóstico , Hepatite C Crônica/epidemiologia , Humanos , América Latina , Cirrose Hepática/diagnóstico , Cirrose Hepática/epidemiologia , Neoplasias Hepáticas/diagnóstico , Masculino , Prognóstico , Medição de Risco , Sociedades Médicas , Análise de Sobrevida , Resultado do Tratamento
19.
Ann Hepatol ; 13(4): 420-8, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24927613

RESUMO

BACKGROUND: Carvedilol appears to be more effective than propranolol in the treatment of portal hypertension in cirrhotic patients. Aim. To compare the effects of carvedilol vs. propranolol on systemic and splanchnic haemodynamics and to evaluate the adverse events associated with these treatments. MATERIAL AND METHODS: We performed a systematic review following the Cochrane and PRISMA recommendations. Randomised controlled trials comparing carvedilol versus propranolol, in the treatment of portal hypertension in cirrhotic patients with oesophageal varices, with or without bleeding history were included. The primary outcome measure was the haemodynamic response to treatment. RESULTS: Four randomised trials and 153 patients were included; 79 patients received carvedilol (6.25-50 mg/d) and 74 patients received propranolol (10-320 mg/d). The hepatic vein pressure gradient (HVPG) decreased more with carvedilol than with propranolol (MD -2.21; 95% CI: -2.83 to -1.60, I(2) = 0%, P < 0.00001). Carvedilol was superior to propranolol for reducing HVPG by ≥ 20% from the baseline value or to ≤ 12 mmHg (OR: 2.93; 95% CI: 1.50 to 5.74, I(2) = 22%, P = 0.002). Overall adverse events did not differ between. In conclusion, there is limited evidence suggesting that carvedilol is more effective than propranolol for improving the haemodynamic response in cirrhotic patients with portal hypertension. Long-term randomized controlled trials are needed to confirm this information.


Assuntos
Anti-Hipertensivos/uso terapêutico , Carbazóis/uso terapêutico , Varizes Esofágicas e Gástricas/tratamento farmacológico , Hipertensão Portal/tratamento farmacológico , Cirrose Hepática/tratamento farmacológico , Propanolaminas/uso terapêutico , Propranolol/uso terapêutico , Carvedilol , Varizes Esofágicas e Gástricas/etiologia , Hemodinâmica/fisiologia , Veias Hepáticas/fisiopatologia , Humanos , Hipertensão Portal/etiologia , Hipertensão Portal/fisiopatologia , Cirrose Hepática/complicações , Cirrose Hepática/fisiopatologia , Circulação Esplâncnica/fisiologia , Resultado do Tratamento
20.
Ann Hepatol ; 12(1): 138-41, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23293205

RESUMO

The differential diagnosis of fever of unknown origin (FUO) includes infectious, neoplastic, rheumaticinflammatory and miscellaneous diseases. We report the case of a 35-year-old man with FUO caused by Q fever. A liver biopsy showed the characteristic fibrin-ring lipogranulomas compatible with Q fever. The serologic tests confirmed the diagnosis of acute infection by Coxiella burnetii. The therapeutic response was excellent. In conclusion, we described a patient with acute Q fever and granulomatous hepatitis.


Assuntos
Febre de Causa Desconhecida/etiologia , Febre Q/complicações , Adulto , Biópsia , Diagnóstico Diferencial , Granuloma/patologia , Hepatite Viral Humana/patologia , Humanos , Fígado/patologia , Masculino , Febre Q/patologia
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