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1.
Arch. latinoam. nutr ; 73(2): 122-134, jun. 2023. tab, graf
Artigo em Inglês | LILACS, LIVECS | ID: biblio-1510011

RESUMO

Non-Alcoholic Fatty Liver disease (NAFLD) can lead to Non Alcoholic steatohepatitis (NASH), cirrhosis, and liver cancer. The treatment for NAFLD involves modification of caloric intake and physical activity. NAFLD has a pro-oxidant nature; therefore, it is logical to suppose that the antioxidant methionine can be used as a treatment for this disease. Aim. This study aimed to evaluate the effect of high-methionine dietary therapy on patients with NAFLD. Materials and methods. A randomized clinical study was conducted over three months. In this study, 121 NAFLD patients participated, and the age of the participants was ≥ 20 years (experimental group included 56 and control group 65), all of whom were randomized and matched by sex, recluted from the ISSSTE hospital in Xalapa, Mexico. The patients were instructed to consume food to cover the recommended methionine daily doses, and the daily amount consumed was calculated. Methionine effect was measured as NAFLD regression and quality of life improvement. Results. Nutritional therapy induced NAFLD regression and diminished central fat accumulation, blood pressure, and the fatty liver index. Some parameters, such as liver enzymes, did not changed. The quality of life of patients improved after treatment. Conclusions. In this study, we show a hepatoprotective effect induced only in three months of chances in the diet, thus, a longer diet may generate more relevant benefits in the resistant parameters of our study(AU)


La enfermedad del hígado graso no alcohólico (NAFLD) puede conducir a la esteatohepatitis no alcohólica (NASH), la cirrosis y el cáncer de hígado. El tratamiento para NAFLD es la modificación de la ingesta calórica y la actividad física. Debido a que NAFLD tiene una naturaleza pro-oxidante; es lógico suponer que el antioxidante metionina puede utilizarse en el tratamiento de esta enfermedad. Objetivo. el presente trabajo evaluó el papel de la terapia nutricional con alimentos ricos en metioninaen pacientes con NAFLD. Materiales y Métodos. Se realizó un ensayo clínico aleatorizado durante tres meses. Participaron en el estudio 121 pacientes con NAFLD con edad ≥ 20 años (56 en el grupo experimental y 65 en el control), todos aleatorizados y pareados por sexo, reclutados de la Clínica Hospital ISSTE en la ciudad de Xalapa, México, en el año 2015. Se instruyó a los pacientes en consumir los alimentos hasta completar la dosis diaria recomendada de metioninay se calculó la cantidad diaria consumida. Su efecto se midió como la regresión de NAFLD y la mejora de la calidad de vida. Resultados. La terapia nutricional retrocedió NAFLD; disminuyó la acumulación de grasa central, la presión arterial y el índice de hígado graso. Algunos parámetros, como las enzimas de la función hepática, no se modificaron con el tratamiento. Otro parámetro fue la mejora de la calidad de vida de los pacientes tratados. Conclusiones. En este trabajo mostramos un impacto hepatoprotector producido con tan solo tres meses de cambios en la dieta, por lo que una dieta más prolongada podría generar beneficios aún más significativos en los parámetros resistentes en nuestro protocolo(AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Comportamento Alimentar , Hepatopatia Gordurosa não Alcoólica , Cirrose Hepática , Ingestão de Energia , Exercício Físico , Dieta , Metionina
2.
Appl Microbiol Biotechnol ; 104(2): 741-750, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31807886

RESUMO

Bioinformatic mining of the Streptomyces thermocarboxydus K155 genome predicted the presence of four synthases for the production of geosmin, hopene, albaflavenone, and a type B-type A diterpenoid system like that described for labdane-related diterpenoids (LRD). The lrd cluster was comprised by an operon of four genes (lrdABDC). This cluster seemed to be silent in the wild-type strain, as neither labdane nor terpene-like compounds were detected by UPLC-TOF-MS and GC-MS analyses in both culture supernatants and mycelial extracts. Heterologous expression of the lrdABDC cluster in a defective cyslabdan producer (Streptomyces cyslabdanicus K04-0144Δcld) generated 8,17-epoxy-7-hydroxy labda-12,14-diene and cyslabdan. The same cluster expressed in the strains Streptomyces coelicolor M1152, Streptomyces peucetius var. caesius, and Streptomyces avermitilis SUKA22 produced the general intermediary labda-8(17), 12(E),14-triene [(E)-biformene]. Besides (E)-biformene, S. coelicolor M1152 and S. avermitilis SUKA22 produced two and three different labdane-type diterpenoids, underlying the relevance of the genetic background of the Streptomyces host in product formation.


Assuntos
Diterpenos/metabolismo , Engenharia Metabólica/métodos , Redes e Vias Metabólicas/genética , Streptomyces/genética , Streptomyces/metabolismo , Expressão Gênica , Família Multigênica , Óperon , Proteínas Recombinantes/genética , Proteínas Recombinantes/metabolismo
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