RESUMO Contexto: A síndrome de Budd-Chiari (SBC) é resultante da obstrução do fluxo venoso hepático, usualmente no nível da veia hepática ou da veia cava inferior. Quando não tratada, pode evoluir com complicações, incluindo a cirrose hepática. O tratamento com TIPS parece ser eficaz em um subgrupo de pacientes. Objetivo: Realizar uma revisão sistemática e meta-análise da eficácia do TIPS no tratamento da síndrome de Budd-Chiari, considerando sobrevida, redução de pressão portossistêmica, necessidade de transplante hepático, falha técnica e disfunção no shunt em 10 anos de seguimento. Métodos: Foram avaliados 17 estudos publicados nas bases de dados PubMed, Science direct, Web of Science e SCOPUS, que utilizaram TIPS como tratamento da SBC, correspondendo a um total de 618 pacientes, entre 18 e 78 anos. O risco de viés foi avaliado pelas escalas de NOS, NHI e JBI, para estudos de coorte, antes e depois e séries de casos, respectivamente. As meta-análises foram conduzidas, extraindo o número de eventos e o total de pacientes avaliados para realizar as meta-análises de proporções usando o software R, com o pacote “meta” (versão 4.9-6). Resultados: Os resultados agrupados (IC de 95%) foram de 19% (25,9-12,5%) para a taxa de redução da pressão portossistêmica, 6% (1-12%) para a taxa de necessidade de transplantes hepáticos a despeito do uso do TIPS, 2% (1-6%) para a taxa de falha técnica, 30% (18-46%) para a taxa de disfunção do shunt e 88% (81-93%) para a sobrevida entre 1 e 10 anos depois do procedimento. Estratificando essa sobrevida, foi detectada 86% (74-93%) no período menor do que 5 anos, 92% (83-97%) com 5 anos, e 77% (68-83%) de frequência de pacientes vivos 10 anos após a realização do TIPS. Conclusão: O TIPS é um tratamento eficaz para a SBC, proporcionando elevada sobrevida em 10 anos e uma diminuição significativa da pressão portossistêmica. A necessidade de transplantes de fígado após TIPS e a taxa de falha técnica são baixas. Contexto BuddChiari Budd Chiari SBC (SBC hepático inferior tratada complicações Objetivo metaanálise meta análise BuddChiari, Chiari, portossistêmica seguimento Métodos PubMed direct SCOPUS 61 7 NOS JBI coorte casos respectivamente metaanálises análises conduzidas R “meta versão 4.96. 496 4.9 6 . 4 9 4.9-6) Resultados IC 95% 95 19 25,912,5% 259125 25,9 12,5% 25 12 (25,9-12,5% 112% 112 12% (1-12% 2 16% 16 (1-6% 30 1846% 1846 46% 46 (18-46% 88 8193% 8193 81 93% 93 (81-93% procedimento 86 7493% 7493 74 (74-93% 92 8397% 8397 83 97% 97 (83-97% 77 6883% 6883 68 83% (68-83% Conclusão baixas 96 4.96 49 4. 4.9-6 912 25,912,5 25912 259 25, 125 12,5 (25,9-12,5 11 (1-12 (1-6 3 184 (18-46 8 819 (81-93 749 (74-93 839 (83-97 688 (68-83 4.9- 91 25,912, 2591 12, (25,9-12, (1-1 (1- (18-4 (81-9 (74-9 (83-9 (68-8 25,912 (25,9-12 (1 (18- (81- (74- (83- (68- 25,91 (25,9-1 ( (18 (81 (74 (83 (68 (25,9- (8 (7 (6 (25,9 (25, (25 (2

ABSTRACT Background: Budd-Chiari syndrome (BCS) results from the obstruction of the hepatic venous flow, usually at the level of the hepatic vein or inferior vena cava. When left untreated, it can progress with several complications, including liver cirrhosis. Transjugular intrahepatic portosystemic shunt (TIPS) appears to be effective in a subgroup of BCS patients. Objective: To perform a systematic review and meta-analysis of TIPS effectiveness in BCS treatment, considering the survival rate, reduction in portosystemic pressure, need for liver transplantation, technical failure, and shunt dysfunction for up to 10 years of follow-up. Methods: We evaluated 17 studies published in PubMed, Science Direct, Web of Science, and SCOPUS databases, which used TIPS as a treatment for BCS, comprising 618 subjects between 18 and 78 years old. We assessed the bias risk by the NOS, NHI, and JBI scales for cohort studies, before-after studies, and case series, respectively. We conducted the meta-analyses by extracting the number of events and the total patients evaluated to perform the proportion meta-analyses using the R software (“meta” package - version 4.9-6). Results: The pooled results (95%CI) showed a 19% (25.9-12.5%) rate of portosystemic pressure reduction, 6% (1-12%) rate for the need for liver transplants despite the use of TIPS, 2% (1-6%) technical failure rate, 30% (18-46%) shunt dysfunction rate, and 88% (81-93%) for the mean frequency of patients alive between 1 and 10 years after the procedure. We stratified survival rate and found an 86% (74-93%) prevalence of living subjects during less than five years, 92% (83-97%) at five years, and a 77% frequency (68-83%) of patients alive ten years after the TIPS placement. Conclusion: TIPS is an effective treatment for BCS, providing a high 10-year frequency of living patients and a significant decrease in portosystemic pressure. The need for liver transplants after TIPS and the technical failure rate is low. Background BuddChiari Budd Chiari (BCS flow cava untreated complications cirrhosis (TIPS Objective metaanalysis meta analysis transplantation followup. followup follow up. follow-up Methods PubMed Direct databases 61 7 old NOS NHI beforeafter before series respectively metaanalyses analyses (“meta 4.96. 496 4.9 6 . 4 9 4.9-6) Results 95%CI 95CI CI 95 (95%CI 19 25.912.5% 259125 25.9 12.5% 25 12 5 (25.9-12.5% 112% 112 12% (1-12% 2 16% 16 (1-6% 30 1846% 1846 46% 46 (18-46% 88 8193% 8193 81 93% 93 (81-93% procedure 86 7493% 7493 74 (74-93% 92 8397% 8397 83 97% 97 (83-97% 77 6883% 6883 68 83% (68-83% placement Conclusion 10year year low 96 4.96 49 4. 4.9-6 912 25.912.5 25912 259 25. 125 12.5 (25.9-12.5 11 (1-12 (1-6 3 184 (18-46 8 819 (81-93 749 (74-93 839 (83-97 688 (68-83 4.9- 91 25.912. 2591 12. (25.9-12. (1-1 (1- (18-4 (81-9 (74-9 (83-9 (68-8 25.912 (25.9-12 (1 (18- (81- (74- (83- (68- 25.91 (25.9-1 ( (18 (81 (74 (83 (68 (25.9- (8 (7 (6 (25.9 (25. (25 (2

RESUMO A doença metabólica e doença hepática gordurosa metabólica estão aumentando a prevalência mundial e, portanto, espera-se um número maior de carcinoma hepatocelular (CHC) relacionado à doença hepática gordurosa não alcóolica (DHGNA) nos próximos anos. Esta revisão descreve os fatores de risco associados ao CHC em pacientes com DHGNA. A presença de cirrose hepática é a preponderante. Sexo masculino, variantes do gene PNPLA3, diabetes e obesidade também parecem predispor ao desenvolvimento de CHC, mesmo em indivíduos não cirróticos. Até agora, modificações significativas no estilo de vida, incluindo controle glicêmico e tratamento da obesidade, são terapias eficazes para DHGNA/ Esteatohepatite não-alcoolica e, portanto, provavelmente, também para CHC. Alguns medicamentos que propunham-se diminuir a atividade inflamatória e fibrose, bem como a obesidade, foram estudados. Outros dados sugeriram a possibilidade de quimioprevenção do CHC. Até o momento, no entanto, não há evidências definitivas para o uso rotineiro desses medicamentos. Esperamos, no futuro, poder traçar o perfil de pacientes com maior risco de DHGNA-CHC e traçar estratégias para diagnóstico precoce e prevenção. portanto esperase espera se (CHC DHGNA (DHGNA anos preponderante masculino PNPLA3 PNPLA cirróticos agora vida nãoalcoolica alcoolica provavelmente propunhamse propunham fibrose estudados momento entanto Esperamos futuro DHGNACHC prevenção

ABSTRACT Non-alcoholic fatty liver disease is growing in worldwide prevalence and thus, is expected to have a higher number of NAFLD-related hepatocellular carcinoma (HCC) in the following years. This review describes the risk factors associated with HCC in NAFLD-patients. The presence of liver cirrhosis is the preponderant one. Male gender, PNPLA3 variants, diabetes, and obesity also appear to predispose to the development of HCC, even in non-cirrhotic subjects. Thus far, intensive lifestyle modifications, including glycemic control, and obesity treatment, are effective therapies for NAFLD/ non-alcoholic steatohepatitis and, therefore, probably, also for HCC. Some drugs that aimed at decreasing inflammatory activity and fibrosis, as well as obesity, were studied. Other data have suggested the possibility of HCC chemoprevention. So far, however, there is no definitive evidence for the routine utilization of these drugs. We hope, in the future, to be able to profile patients at higher risk of NAFLD-HCC and outline strategies for early diagnosis and prevention. Nonalcoholic Non alcoholic thus NAFLDrelated NAFLD related (HCC years NAFLDpatients. NAFLDpatients patients. NAFLD-patients one gender PNPLA variants diabetes noncirrhotic non cirrhotic subjects far modifications control treatment nonalcoholic therefore probably fibrosis studied chemoprevention however hope future NAFLDHCC prevention

RESUMO Contexto O transplante de fígado com doador falecido é a primeira escolha, mas o transplante de doador vivo é uma alternativa a ser considerada em situações especiais, como falta de órgãos doados e emergências. Até o momento, não há consenso sobre qual método de transplante proporciona melhor sobrevida e menos complicações, sendo, ainda, um ponto em aberto para discussão. Métodos Esta meta-análise comparou as taxas de sobrevida de pacientes e enxertos de 1, 3 e 5 anos de transplante de doador vivo e transplante de fígado com doador falecido. Incluímos estudos publicados de abril de 2009 a junho de 2021 e adotamos o modelo genérico do inverso da variância para o efeito aleatório das razões de risco. A adequação dos estudos foi determinada por meio da Escala de Newcastle-Ottawa — NOS (WELLS). Resultados Para análise de sobrevida do paciente, incluímos um total de 32.258 indivíduos. Encontramos uma melhor sobrevida estatisticamente significativa para o grupo de transplante de fígado de doador vivo em 1, 3 e 5 anos, respectivamente: 1,35 HR (IC95% 1,10—1,66, P=0,005), 1,26 HR (IC95% 1,09—1,46, P=0,002) e 1,27 HR (IC95% 1,09—1,48, P=0,002). Nossa meta-análise avaliou um total de 21.276 enxertos. Na análise geral, a sobrevida em 1 ano foi melhorada em favor do grupo de transplante de doador vivo (1,36 HR, IC95% 1,16—1,60, P<0,0001), enquanto a sobrevida em 3 anos (1,13 HR, IC95% 0,96—1,33, P<0,13) e 5 (0,99 HR, IC95% 0,74—1,33, P<0,96), não diferiram significativamente. Conclusão Esta meta-análise detectou uma sobrevida estatisticamente significativa maior do paciente em 1, 3 e 5 anos favorecendo o transplante de doador vivo em comparação com o transplante de fígado com doador falecido, bem como uma diferença estatisticamente significativa melhor na sobrevida do enxerto em 1 ano favorecendo o grupo de transplante de doador vivo.

ABSTRACT Background Deceased donor liver transplantation (DDLT) is the first choice, but living donor transplantation (LDLT) is an alternative to be considered in special situations, such as lack of donated organs and emergencies. So far, there is no consensus on which transplantation method provides better survival and fewer complications, which is still an open point for discussion. Methods This meta-analysis compared the 1, 3, and 5-year patient and graft survival rates of LDLT and DDLT. We included studies published from April-2009 to June-2021 and adopted the generic model of the inverse of variance for the random effect of hazard ratios. The adequacy of the studies was determined using the Newcastle-Ottawa Scale — NOS (WELLS). Results For patient survival analysis, we included a total of 32,258 subjects. We found a statistically significant better survival for the LDLT group at 1, 3 and 5 years, respectively: 1.35 HR (95%CI 1.10—1.66, P=0.005), 1.26 HR (95%CI 1.09—1.46, P=0.002) and 1.27 HR (95%CI 1.09—1.48, P=0.002). Our meta-analysis evaluated a total of 21,276 grafts. In the overall analysis, the 1-year survival was improved in favor of the LDLT group (1.36 HR, 95%CI 1.16—1.60, P<0.0001), while the 3-year survival (1.13 HR, 95%CI 0.96—1.33, P<0.13), and 5 (0.99 HR, 95%CI 0.74—1.33, P<0.96), did not differ significantly. Conclusion This metanalysis detected a statistically significant greater 1-, 3- and 5-years patient survival favoring LDLT compared to DDLT as well as a statistically significant difference better 1-year graft survival favoring the LDLT group.

RESUMO As lesões que ocupam espaço no fígado podem ser císticas ou sólidas. A ultrassonografia é extremamente útil como rastreamento inicial, bastando como método diagnósticos em casos de cistos simples. Em cistos complexos e em nódulos sólidos é necessária a complementação diagnóstica com tomografia computadorizada ou ressonância magnética. Em casos de cistadenoma ou cistadenocarcinoma, a ampla retirada cirúrgica está indicada. Dados clínico-epidemiológicos são importantes, já que nódulos em fígados não-cirróticos têm maiores probabilidades de serem benignos. Para os hemangiomas, tumores benignos mais frequentes, após a confirmação diagnóstica não existe necessidade de acompanhamento sistemático quando os nódulos são pequenos e assintomáticos. Hemangiomas gigantes sintomáticos ou comprimindo órgãos vizinhos devem ser encaminhados a centros de referência para avaliação de intervenção cirúrgica. A heterogeneidade genética nos adenomas hepatocelulares bem como características epidemiológicas e prognósticas motivou sua classificação em quatro subtipos, com base em achados histológicos e de imunohistoquímica. As principais complicações que ocorrem com o adenomas hepatocelulares são ruptura com hemorragia e transformação carcinomatosa. A primeira ocorre em cerca de 30% dos casos e o principal fator de risco para esta complicação são tumores maiores do que 5 cm, do subtipo hiperplasia nodular focal 1A, esses medicamentos devem ser suspensos. A hiperplasia nodular focal é o segundo tumor benigno mais frequente, mais comum nas mulheres entre 20 e 60 anos, sendo assintomáticos em 70% a 90% dos casos. Na ausência de lesão cicatricial central e/ou outros sinais sugestivos de hiperplasi nodular focal, havendo dúvida diagnóstica com adenoma hepatocelular, o uso de contraste hepatespecíficos está indicado.

ABSTRACT Space-occupying lessions of the liver may be cystic or solid. Ultrasonography is an extremely useful method for initial screening, and suffices for diagnosis of simple hepatic cysts. Complex cysts and solid masses require computed tomography or magnetic resonance imaging for confirmation. Wide surgical excision is indicated in cystadenoma or cystadenocarcinoma. Clinical and epidemiological data are important, as nodules in noncirrhotic livers are more likely to be benign. Hemangiomas, the most common benign tumors, require no follow-up after diagnostic confirmation if they are small and asymptomatic. Patients with giant, symptomatic hemangiomas or compression of adjacent structures should be referred to hepatobiliary centers for potential surgery. The genetic heterogeneity of hepatocellular adenoms and their epidemiology and prognosis prompted classification of these tumors into four subtypes based on histology and immunohistochemistry. The major complications of hepatocellular adenoms are rupture with bleeding and malignant transformation. Rupture occurs in approximately 30% of cases. The main risk factors are tumors size >5 cm and inflammatory subtype. Hepatocellular adenoms may enlarge during pregnancy due to marked hormonal stimulation. As oral contraceptive pills and anabolic steroids have associated with hepatocellular adenoms growth, particularly of the hepatocyte nuclear factor-1 alfa subtype, these drugs should be discontinued. Focal nodular hyperplasia is the second most common benign tumor of hte liver. It is most frequent in women aged 20 to 60, and 70% to 90% of cases are asymptomatic. In the adsence of a central scar and/or other hallmarks of Focal nodular hyperplasia, with uncertainty between this diagnosis and hepatocellular adenoma, liver-specific contrast agentes are indicated.

Introduction: Calcium deficiency is considered a risk factor for the development of osteoporosis in inflammatory bowel disease (IBD) patients. Various dietary restrictions, including milk products are reported by these patients. Objective: To evaluate dairy product and dietary calcium intake by IBD patients. Methods: This cross-sectional study enrolled 65 outpatients with IBD recruited from one reference center for IBD. A semi-structured questionnaire (to collect demographic, socioeconomic and clinical data) and a quantitative food frequency questionnaire were administered. With regard to clinical data, we evaluated the anthropometric nutritional status, the disease classification, the disease activity index and the presence of gastrointestinal symptoms. Selfreported modifications in the use of dairy products were evaluated. Results: The IBD patients´ ages ranged from 20-75 years and 67.0% were diagnosed with ulcerative colitis. The majority (64.7%) reported restricting dairy products. The frequency of gastrointestinal symptoms was higher among the Crohn´s disease patients who restricted dairy products than among those with no restrictions (100% vs 42.9%; p = 0.013); this result was not observed among the UC (ulcerative colitis) patients. Disease activity was also more frequent in the IBD patients who restricted dairy products than in those with no restrictions (23.8% vs 4.5%; p = 0.031), and among the UC patients, extensive disease was more common in the patients who restricted dairy products than in those with no restrictions (42.9% vs 20.0%; p = 0.03). Conclusion: Restricting dairy products is common among IBD patients, possibly due to disease activity, the presence of gastrointestinal symptoms and the extension of the disease.

Introducción: Se considera que la deficiencia de calcio es un factor de riesgo para el desarrollo de osteoporosis en pacientes con enfermedad inflamatoria intestinal (EII). En estos pacientes se han notificado diversas restricciones dietéticas. Objetivo: Evaluar la ingesta de productos lácteos y calcio de la dieta en pacientes con EII. Métodos: En este estudio cruzado se reclutaron 65 pacientes ambulatorios con EII procedentes de un centro de referencia para EII. Se administraron un cuestionario semi-estructurado (que recogía datos demográficos, socio-económicos y clínicos) y un cuestionario de frecuencia de consumo de alimento. Con respecto a los datos clínicos, evaluamos el estado nutricional antropométrico, la clasificación de la enfermedad, el índice de actividad de la enfermedad y la presencia de síntomas gastrointestinales. Se evaluaron las modificaciones auto-notificadas en el uso de los productos lácteos. Resultados: Las edades de los pacientes con EII variaban entre los 20 y 75 años y el 67,0% fueron diagnosticados de colitis ulcerosa. La mayoría (64,7 %) notificaban una restricción de los productos lácteos. La frecuencia de síntomas gastrointestinales fue mayor en los pacientes con enfermedad de Crohn que restringían los productos lácteos que en aquellos que no lo hacían (100% frente a 42,9%; p = 0,013); este resultado no se observó en los pacientes con colitis ulcerosa CU. La actividad de la enfermedad también fue más frecuente en los pacientes con EII que restringían los productos lácteos que en aquellos sin restricción (23,8% frente a 4,5%; p = 0,031) y, en los pacientes con CU, la enfermedad extensa fue más habitual en pacientes que restringían los productos lácteos que en aquellos que no lo hacían (42,9 % frente a 20,0%; p = 0,03). Conclusión: La restricción de productos lácteos es habitual en pacientes con EII, posiblemente debido a la actividad de la enfermedad, la presencia de síntomas gastrointestinales y la extensión de la enfermedad.

OBJECTIVES: Suppressor of cytokine signaling 3, myxovirus resistance protein and osteopontin gene polymorphisms may influence the therapeutic response in patients with chronic hepatitis C, and an association with IL28 might increase the power to predict sustained virologic response. Our aims were to evaluate the association between myxovirus resistance protein, osteopontin and suppressor of cytokine signaling 3 gene polymorphisms in combination with IL28B and to assess the therapy response in hepatitis C patients treated with pegylated-interferon plus ribavirin. METHOD: Myxovirus resistance protein, osteopontin, suppressor of cytokine signaling 3 and IL28B polymorphisms were analyzed by PCR-restriction fragment length polymorphism, direct sequencing and real-time PCR. Ancestry was determined using genetic markers. RESULTS: We analyzed 181 individuals, including 52 who were sustained virologic responders. The protective genotype frequencies among the sustained virologic response group were as follows: the G/G suppressor of cytokine signaling 3 (rs4969170) (62.2%); T/T osteopontin (rs2853744) (60%); T/T osteopontin (rs11730582) (64.3%); and the G/T myxovirus resistance protein (rs2071430) genotype (54%). The patients who had ≥3 of the protective genotypes from the myxovirus resistance protein, the suppressor of cytokine signaling 3 and osteopontin had a greater than 90% probability of achieving a sustained response (p<0.0001). The C/C IL28B genotype was present in 58.8% of the subjects in this group. The sustained virological response rates increased to 85.7% and 91.7% by analyzing C/C IL28B with the T/T osteopontin genotype at rs11730582 and the G/G suppressor of cytokine signaling 3 genotype, respectively. Genetic ancestry analysis revealed an admixed population. CONCLUSION: Hepatitis C genotype 1 patients who were responders to interferon-based therapy had a high frequency of multiple protective polymorphisms in the myxovirus resistance protein, osteopontin and suppressor of cytokine signaling 3 genes. The combined analysis of the suppressor of cytokine signaling 3 and IL28B genotypes more effectively predicted sustained virologic response than IL28B analysis alone.

OBJECTIVE: The individual components of metabolic syndrome may be independent predictors of mortality in patients with liver disease. We aimed to evaluate the prevalence of metabolic syndrome and its related components in hepatitis C virus-infected patients who are not obese and do not have type 2 diabetes. METHODS: This cross-sectional study included 125 patients infected with hepatitis C virus genotype 1. Metabolic syndrome was defined according to the International Diabetes Federation. Anthropometric data were measured according to standardized procedures. Bioimpedance analysis was performed on all patients. RESULTS: Metabolic syndrome was diagnosed in 21.6% of patients. Of the subjects with metabolic syndrome, 59.3% had hypertension, 77.8% had insulin resistance, 85.2% were overweight, 48.1% had a high waist circumference, 85.2% had an increased body fat percentage, and 92.3% had an elevated waist:hip ratio. In the bivariate analysis, female sex (OR 2.58; 95% CI: 1.09-6.25), elevated gamma-glutamyl transferase (γGT) (OR 2.63; 95% CI: 1.04-7.29), elevated fasting glucose (OR 8.05; 95% CI: 3.17-21.32), low HDL cholesterol (OR 2.80; 95% CI: 1.07-7.16), hypertriglyceridemia (OR 7.91; 95% CI: 2.88-22.71), elevated waist circumference (OR 10.33; 95% CI: 3.72-30.67), overweight (OR 11.33; 95% CI: 3.97-41.07), and increased body fat percentage (OR 8.34; 95% CI: 2.94-30.08) were independent determinants of metabolic syndrome. Using the final multivariate regression model, similar results were observed for abdominal fat (OR 9.98; 95% CI: 2.63-44.41) and total body fat percentage (OR 8.73; 95% CI: 2.33-42.34). However, metabolic syndrome risk was also high for those with blood glucose >5.55 mmol/L or HDL cholesterol <0.9 mmol/L (OR 16.69; 95% CI: 4.64-76.35; OR 7.23; 95% CI: 1.86-32.63, respectively). CONCLUSION: Metabolic syndrome is highly prevalent among hepatitis C virus-infected patients without type 2 diabetes or obesity. Metabolic syndrome was significantly associated with hypertension, insulin resistance, increased abdominal fat, and overweight.

OBJECTIVE: The goal of this project was to analyze the association between Crohn's disease, its clinical features, and the tumor necrosis factor alpha (TNF-α) -308 polymorphism. METHODS: This is a case-control and cross-sectional study that enrolled 91 patients with Crohn's disease and 91 controls. Patients with Crohn's disease were characterized according to the Montreal Classification, along with their clinical and surgical treatment history. Analysis of the TNF-α -308 polymorphism was performed using a commercial kit. A stratified analysis was applied using an OR (odds ratio) with a 95% confidence interval. The chi-square and Fisher's exact tests were utilized for analysis of the association between the polymorphism and the clinical features of Crohn's disease. RESULTS: The low producer predicted phenotype was present in 76.9% of Crohn's disease cases and 75.8% of controls (OR 0.94 [0.45-1.97]). The TNF2 allele and the high producer predicted phenotype were more frequent among patients with Crohn's disease penetrating behavior (p = 0.004). The TNF2 allele and the high producer predicted phenotype were also associated with a history of colectomy (p = 0.02), and the TNF2 allele was associated with small bowel resection (p = 0.03). CONCLUSIONS: The TNF-α -308 polymorphism appears to affect the severity of the disease. However, TNF-α -308 polymorphism does not appear to be important for the susceptibility in the development of Crohn's disease.

RACIONAL: A doença de Crohn é um distúrbio inflamatório crônico com apresentação clínica diversa, o que pode ser observado desde a variação da idade de início dos sintomas até o local de ocorrência da doença. Existe a necessidade de uma descrição uniforme e replicável da doença que permita comparação entre diferentes populações estudadas. A classificação de Viena de 1998 caracteriza os pacientes de acordo com três aspectos clínicos: idade do diagnóstico, localização e comportamento da doença. OBJETIVO: Descrever a doença de Crohn em pacientes de um centro de referência de Salvador, BA, de acordo com a classificação de Viena. MÉTODO: Entre janeiro e outubro de 2005, participaram deste estudo pacientes (n = 47) que tiveram pelo menos um exame endoscópico ou radiológico do intestino. RESULTADOS: A maioria dos participantes teve o diagnóstico da doença com idade menor do que 40 anos (70.2%), enquanto a localização íleo-colônica (38,3%) e a forma penetrante (46,8%) foram as apresentações clínicas mais prevalentes. A localização restrita ao íleo (L1) foi mais freqüente na doença não-estenosante não-penetrante (B1), enquanto a doença íleo-colônica (L3) foi mais associada com o comportamento penetrante (B3). CONCLUSÃO: Neste estudo, diferente da descrição inicial da classificação de Viena, o grande número de pacientes apresentando-se com fase complicada da doença pode ser atribuído ao fato de ter sido realizado em um centro de referência, onde muitos pacientes comparecem com a doença avançada.

BACKGROUND: Crohn’s disease is a chronic inflammatory disorder with diversity on its clinical presentation that may be observed from the varying age of onset of symptoms to the site of occurrence of the illness. There is a need for a replicable and uniform description of the disease allowing a comparison between distinct study populations. The 1998 Vienna classification characterizes patients according to three clinical aspects: age at diagnosis, location and disease behavior. AIM: To describe Crohn’s disease in patients from a reference center of Salvador, BA, Brazil according to the Vienna classification. METHODS: Between January and October of 2005, patients (n = 47) having at least one endoscopic and radiological examination of the intestine participated in this study. RESULTS: Most of the participants had the diagnosis of the disease when they were younger than 40 years old (70.2%) while an ileocolic location (38.3%) and the penetrating form (46.8%) were the most prevalent clinical presentation. The restricted location of the ileum (L1) was more frequent in nonstricturing, nonpenetrating disease (B1) while the ileocolic disease (L3) was more associated with the penetrating behavior (B3). CONCLUSION: In this study, differently from the first description of the Vienna classification, the large number of patients presenting a complicated stage of the disease can be attributed to the fact that it was carried out at a reference center, where many patients present with the disease at an advanced stage.

RACIONAL: Estudos em cinética viral na hepatite C demonstraram que há uma queda dos níveis séricos de interferon 48 h após a sua administração, quando a carga viral do vírus C volta a se elevar. Antes da disponibilidade do interferon peguilado, diversos ensaios clínicos investigaram a terapia de indução com interferon standard OBJETIVOS: Avaliar a segurança e eficácia do esquema de indução diário com interferon alfa associado à ribavirina. PACIENTES E MÉTODOS: Noventa e três pacientes com hepatite crônica C foram incluídos. Através de randomização, foram alocados em um de dois braços terapêuticos: 44 indivíduos no grupo A: IFN 3MU três vezes por semana + ribavirina 1,0-1,2 g diariamente por 48 semanas e 49 indivíduos no grupo B: IFN 3MU diariamente por 12 semanas, seguindo-se por IFN 3MU três vezes por semana até completar 48 semanas + ribavirina 1,0-1,2 g diariamente por 48 semanas. A genotipagem do vírus C foi realizada em 85 indivíduos. Considerou-se resposta virológica sustentada a persistência do HCV-RNA negativo 6 meses após o término da terapia RESULTADOS: Oitenta e três pacientes completaram o tratamento. Houve cinco abandonos (um do grupo A e quatro do grupo B) e em cinco pacientes a terapia foi retirada devido a efeitos adversos (dois do grupo A e três do grupo B). Não houve diferença estatisticamente significante entre os grupos quanto à interrupção do tratamento. A freqüência de cirrose foi 29%, semelhante entre os grupos. Na análise "intention to treat" a resposta virológica sustentada foi 39,8%. Não houve diferença estatística na taxa de resposta virológica sustentada entre ambas as estratégias terapêuticas (36,4% grupo A vs 42,9% grupo B). Nos 83 pacientes que finalizaram o estudo, a resposta virológica sustentada foi 44,6%. Entre os pacientes com genótipo 1, a resposta virológica sustentada foi 42% (40,9% grupo A vs 42,9% grupo B) e entre os pacientes com genótipo 2/3, a resposta virológica sustentada foi 55,6% (50% grupo A vs 63,6% grupo B) CONCLUSÕES: A taxa de resposta virológica sustentada foi 39,8% para a terapia combinada (análise "intention to treat"). Não houve diferença entre as taxas de RVS do grupo de indução comparado ao regime padrão. Efeitos adversos, mesmo mais freqüentes no grupo de indução, não interferiram nas estratégias terapêuticas.

BACKGROUD: Studies on hepatitis C virus kinetics showed that serum levels of interferon fall 48 h after drug administration, when viral load is increasing again. Previously to the availability of pegylated interferon, daily induction therapy with standard interferon was under evaluation. AIMS: To evaluate the safety and efficacy of interferon alpha daily induction regimen in combination with ribavirin. PATIENTS AND METHODS: A randomized trial including 93 patients with chronic hepatitis C was carried out. On satisfying all eligibility criteria, patients were randomly allocated to two different treatment groups: 44 individuals in treatment arm A: IFN 3 MU thrice weekly + ribavirin 1.0-1.2 g daily for 48 weeks (IFN TIW) and 49 individuals in treatment arm B: IFN 3 MU daily + ribavirin 1.0-1.2 g daily for 12 weeks followed by IFN 3 MU thrice weekly + ribavirin 1.0-1.2 g daily, until completion of 48 weeks of therapy (IFN QD). HCV genotyping was obtained in 85 subjects. A negative HCV-RNA 6 months after cessation of therapy was considered a sustained virological response RESULTS: Eighty three patients completed treatment, five dropped out (one from IFN TIW and four from IFN QD) and in five patients therapy was discontinued due to medical request (two from IFN TIW and three from IFN QD). There was no statistically significant difference between groups with respect to therapy interruption. The frequency of cirrhosis was 29%, similar in both groups. In the "intention to treat" analysis the overall sustained virological response was 39.8%. There was no significant difference in sustained virological response rate between both treatment strategies (36.4% IFN TIW vs 42.9% IFN QD). In the 83 patients who finished the trial, sustained virological response was 44.6%. Among subjects with HCV genotype-1, the sustained virological response was 42% (40.9% IFN TIW vs 42.9% IFN QD) and among patients with HCV genotype 2 or 3, the sustained virological response was 55.6% (50% IFN TIW vs 63.6% IFN QD) CONCLUSIONS: Combination therapy had an overall sustained virological response rate of 39.8% ("intention to treat analysis"). There was no difference with respect to sustained virological response rates between patients who used daily induction schedule compared to standard regimen. Adverse events, even more frequent in the daily induction group, did not interfere with the treatment strategies.

Patients with chronic hepatitis C can have variable clinical progression. Hepatic histological alterations appear to be milder in asymptomatic subjects who have persistently normal ALT levels. AIMS: To evaluate the severity of histological liver alterations in blood donors with normal and elevated ALT levels. METHODS: We evaluated volunteer blood donors from the main blood bank of the city of Salvador-Brazil. Those who were anti-HCV positive were invited to participate in the study. Serum ALT and AST levels were measured at two time points, two months apart. Donors were divided into two groups: group I, individuals with ALT > 1.5 times the upper limit of normal in at least one time point and group II, individuals with normal or near normal ALT, at both time points RESULTS: We evaluated 30,232 blood donors and 528 (1.7%) of them were anti-HCV positive. Eighty-two attended our service and HCV infection was confirmed in 66 individuals. Male gender predominated in both groups; the mean age was 36 for group I, and 33 for group II. Tattoos and intravenous illicit drug use were frequently-encountered risk factors. Liver biopsy was done in 43 subjects. Among donors with elevated ALT, two (10%) had minimum alterations, while in group II normal liver or minimum alterations were observed in six (26%) subjects. Chronic hepatitis or cirrhosis was encountered in 35 (81%) individuals: three (15%) and five (21%) subjects had chronic hepatitis without inflammatory activity, 10 (50%) and 11 (48%) had minimum to moderate activity and five (25%) and one (4.3%) had cirrhosis, in groups I and II, respectively (P was not significant). CONCLUSIONS: The prevalence of anti-HCV among this population of volunteer blood donors was 1.7%, and these subjects had few liver histological alterations or chronic hepatitis and cirrhosis. Liver injury severity was significant in patients with elevated ALT, however subjects with normal levels may also present chronic hepatitis and cirrhosis.