hepatitis c viral load does not predict disease outcome: going beyond numbers a carga viral do vírus da hepatite c não prediz a evolução: indo além dos números

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ID: 133776
2002
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Abstract
The analysis of 58 patients with chronic hepatitis C without cirrhosis and treated with interferon-alpha demonstrated that hepatitis C viral (HCV) load does not correlate with the histological evolution of the disease (p = 0.6559 for architectural alterations and p = 0.6271 for the histological activity index). Therefore, the use of viral RNA quantification as an evolutive predictor or determinant of the severity of hepatitis C is incorrect and of relative value. A review of the literature provided fundamental and interdependent HCV (genotype, heterogeneity and mutants, specific proteins), host (sex, age, weight, etc) and treatment variables (dosage, time of treatment, type of interferon) within the broader context of viral kinetics, interferon-mediated immunological response (in addition to natural immunity against HCV) and the role of interferon as a modulator of fibrogenesis. Therefore, viral load implies much more than numbers and the correct interpretation of these data should consider a broader context depending on multiple factors that are more complex than the simple value obtained upon quantification.
Através da análise de 58 pacientes tratados com Interferon Alfa em função de hepatite C crônica e sem cirrose, demonstramos que a carga viral do Vírus da Hepatite C (VHC) não se correlacionou com a evolução histológica da doença (p = 0,6559 para alterações arquiteturais e p = 0,6271 para o Índice de Atividade Histológica-IAH). Assim a utilização da quantificação do RNA viral como preditor evolutivo ou determinante da gravidade da hepatite C é incorreto e de valor relativo. Revisando o tema encontramos variáveis do VHC (genótipo, heterogeneidade e mutantes, proteínas específicas), do hospedeiro (sexo, idade, peso, etc) e dos medicamentos (posologia, tempo de tratamento, tipo de Interferon) fundamentais e interdependentes, inseridas no contexto mais amplo da cinética viral, da resposta imunológica mediada pelo Interferon (além da imunidade natural em resposta ao VHC) e do papel do Interferon como modulador da fibrogênese. Assim, há muito mais que números por trás da Carga Viral e sua correta interpretação deve ser feita considerando-se um horizonte mais amplo dependente de múltiplos fatores mais complexos que o simples valor obtido na quantificação
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Authors ;Evaldo Stanislau Affonso de ARAÚJO;Norma de Paula CAVALHEIRO;Regina Maria Cubero LEITÃO;Rose Aparecida Borges TOSTA;Antonio Alci BARONE
Journal 2017 12th international conference for internet technology and secured transactions, icitst 2017
Year 2002
DOI
10.1590/S0036-46652002000200004
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46652002000200004
Keywords
hepatitis c viral load tropical medicine

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