Gluco-lipidic indices in treated hypothyroidism associated with nonalcoholic fatty liver disease.

CONTEXT: Thyroid hormones may interfere with regulation of lipid and carbohydrate metabolism as well as with severity of nonalcoholic fatty liver disease (NAFLD), however results are still debated. OBJECTIVES: Retrospective evaluation of clinical and metabolic correlations between hypothyroidism and NAFLD was the target. METHODS: Clinical, biochemical and histological investigation of 103 NAFLD patients exhibiting drug-treated hypothyroidism was conducted. RESULTS: Steatosis was present in 32.0% of the population and nonalcoholic steatohepatitis in 68.0%. Females were the majority in both groups, with age of 50.0 ± 1.5 and 56.0 ± 1.1 years, respectively. Hypothyroidism was not rare (15.5%), and multivariate analysis confirmed positive correlation with this disease for insulin (r = 0.213, P = 0.03), glucose homeostasis index "HOMA" (r = 0.221, P = 0.02), aspartate aminotransferase (r = 0.234, P = 0.01) and triglycerides above 150 mg/dL (r = 0.233, P = 0.01). No association between hypothyroidism and steatohepatitis could be established. CONCLUSION: A link could be identified between hypothyroidism and markers of glucose and lipid homeostasis, but not with severity of NAFLD. The lack of correlation with liver biopsy requires further studies.

Gluco-lipidic indices in treated hypothyroidism associated with nonalcoholic fatty liver disease / Índices glicolipídicos no hipotireoidismo tratado associado à doença hepática gordurosa não-alcoólica

CONTEXT: Thyroid hormones may interfere with regulation of lipid and carbohydrate metabolism as well as with severity of nonalcoholic fatty liver disease (NAFLD), however results are still debated. OBJECTIVES: Retrospective evaluation of clinical and metabolic correlations between hypothyroidism and NAFLD was the target. METHODS: Clinical, biochemical and histological investigation of 103 NAFLD patients exhibiting drug-treated hypothyroidism was conducted. RESULTS: Steatosis was present in 32.0 percent of the population and nonalcoholic steatohepatitis in 68.0 percent. Females were the majority in both groups, with age of 50.0 ± 1.5 and 56.0 ± 1.1 years, respectively. Hypothyroidism was not rare (15.5 percent), and multivariate analysis confirmed positive correlation with this disease for insulin (r = 0.213, P = 0.03), glucose homeostasis index "HOMA" (r = 0.221, P = 0.02), aspartate aminotransferase (r = 0.234, P = 0.01) and triglycerides above 150 mg/dL (r = 0.233, P = 0.01). No association between hypothyroidism and steatohepatitis could be established. CONCLUSION: A link could be identified between hypothyroidism and markers of glucose and lipid homeostasis, but not with severity of NAFLD. The lack of correlation with liver biopsy requires further studies.

CONTEXTO: Os hormônios tireoidianos podem interferir na regulação do metabolismo de lipídios e carboidratos e também na gravidade da doença hepática gordurosa não-alcoólica (DHGNA), porém os resultados ainda são debatidos. OBJETIVOS: Avaliar retrospectivamente correlações clínicas e metabólicas entre hipotireoidismo e DHGNA. MÉTODOS: Em 103 pacientes com DHGNA confirmada por biopsia e também hipotireoidismo recebendo tratamento, procedeu-se à investigação clínica, bioquímica e histológica. RESULTADOS: A esteatose foi observada em 32,0 por cento e a esteatohepatite não-alcoólica em 68,0 por cento da população. O sexo feminino foi mais frequente nas duas circunstâncias, com idade média de 50,0 ± 1,5 e 56,0 ± 1,1 anos, respectivamente. O hipotireoidismo não foi raro (15,5 por cento), sendo que na análise multivariada insulina (r = 0,213, P = 0,03), índice de homeostase glicídica HOMA (r = 0,221, P = 0,02), aspartato aminotransferase (r = 0,234, P = 0,01) e triglicerídeos acima de 150 mg/dL (r = 0,233, P = 0,01) foram correlacionados positivamente com hipotireoidismo. A associação entre hipotireoidismo e esteatohepatite não pôde ser estabelecida neste estudo. CONCLUSÃO: O hipotireoidismo vinculou-se à piora de alguns marcadores do metabolismo glicolipídico, porém não a lesões histológicas mais avançadas. A falta de correlação com a biopsia do fígado requer maiores estudos.