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Genome-based nutrition:An intervention strategy for the prevention and treatment of obesity and nonalcoholic steatohepatitis

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World Journal of Gastroenterology 2015年第12期21卷 3449-3461页

作者： Sonia roman Claudia Ojeda-Granados Omar ramos-Lopez Arturo Panduro Department of Molecular Biology in Medicine Civil Hospital of Guadalajara "Fray Antonio Alcalde"GuadalajaraJalisco Mexico and Health Sciences Center University of Guadalajara

Obesity and nonalcoholic steatohepatitis are increasing in westernized countries, regardless of their geographiclocation. In Latin America, most countries, including Mexico, have a heterogeneous admixture genome with Amerindian, European and African ancestries. However, certain high allelic frequencies of several nutrientrelated polymorphisms may have been achieved by past gene-nutrient interactions. Such interactions may have promoted the positive selection of variants adapted to regional food sources. At present, the unbalanced diet composition of the Mexicans has led the country to a 70% prevalence rate of overweightness and obesity due to substantial changes in food habits, among other factors. International guidelines and intervention strategies may not be adequate for all populations worldwide because they do not consider disparities in genetic and environmental factors, and thus there is a need for differential prevention and management strategies. Here, we provide the rationale for an intervention strategy for the prevention and management of obesity-related diseases such as nonalcoholic steatohepatitis based on a regionalized genome-based diet. The components required to design such a diet should focus on the specific ancestry of each population around the world and the convenience of consuming traditional ethnic food.

关键词： Latin America Mexico Gene-nutrient interactions Ev

Genetic, metabolic and environmental factors involved in the development of liver cirrhosis in Mexico

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World Journal of Gastroenterology 2015年第41期21卷 11552-11566页

作者： Omar ramos-Lopez Erika Martinez-Lopez Sonia roman Nora A Fierro Arturo Panduro Department of Molecular Biology in Medicine Civil Hospital of Guadalajara "Fray Antonio Alcalde" Guadalajara Jalisco Mexico and Health Sciences Center University of Guadalajara

Liver cirrhosis(LC) is a chronic illness caused by inflammatory responses and progressive fibrosis. Globally, the most common causes of chronic liver disease include persistent alcohol abuse, followed by viral hepatitis infections and nonalcoholic fatty liver disease. However, regardless of the etiological factors, the susceptibility and degree of liver damage may be influenced by genetic polymorphisms that are associated with distinct ethnic and cultural backgrounds. Consequently, metabolic genes are influenced by variable environmental lifestyle factors, such as diet, physical inactivity, and emotional stress, which are associated with regional differences among populations. This Topic Highlight will focus on the genetic and environmental factors that may influence the metabolism of alcohol and nutrients in the setting of distinct etiologies of liver disease. The interaction between genes and environment in the current-day admixed population, Mestizo and Native Mexican, will be described. Additionally, genes involved in immune regulation, insulin sensitivity, oxidative stress and extracellular matrix deposition may modulate the degree of severity. In conclusion, LC is a complex disease. The onset, progression, and clinical outcome of LC among the Mexican population are influenced by specific genetic and environmental factors. Among these are an admixed genome with a heterogenic distribution of European, Amerindian and African ancestry; a high score of alcohol consumption; viral infections; a hepatopathogenic diet; and a high prevalence of obesity. The variance in risk factors among populations suggests that intervention strategies directed towards the prevention and management of LC should be tailored according to such population-based features.

关键词： Genomic medicine Polymorphisms Viral hepatitis Obe

Stricturing Crohn's disease-like colitis in a patient treated with belatacept

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World Journal of Gastroenterology 2017年第48期23卷 8660-8665页

作者： Anne Bozon Guillaume Jeantet Benjamin Rivière Natalie Funakoshi Gaspard Dufour roman Combes Jean-Christophe Valats Sylvie Delmas Jean Emmanuel Serre Michael Bismuth Jeanne ramos Moglie Le Quintrec Pierre Blanc Guillaume Pineton de Chambrun Gastroenterology Department Saint-Eloi HospitalMontpellier University Hospital Nephrology Department Lapeyronie HospitalMontpellier University Hospital Pathology Department Guy de Chauliac HospitalMontpellier University Hospital

Cytotoxic T-lymphocyte-associated antigen 4(CTLA-4) modifying agents have been involved in the development of intestinal inflammation,especially therapeutic monoclonal antibodies directed against CTLA-4. Here we report the appearance of a severe stricturing Crohn's disease-like colitis in a patient with a kidney allograft who was treated with belatacept,a recombinant CTLA-4-Ig fusion protein.

关键词： Crohn’s disease Colitis Belatacept HHV-6 Inflammatory bowel disease

CD36 genetic variation, fat intake and liver fibrosis in chronic hepatitis C virus infection

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World Journal of Hepatology 2016年第25期8卷 1067-1074页

作者： Omar ramos-Lopez Sonia roman Erika Martinez-Lopez Nora A Fierro Karina Gonzalez-Aldaco Alexis Jose-Abrego Arturo Panduro Department of Molecular Biology in Medicine Civil Hospital of Guadalajara "Fray Antonio Alcalde" Health Sciences University Center University of Guadalajara

AIM To analyze the association of the CD36 polymorphism(rs1761667) with dietary intake and liver fibrosis(LF) in chronic hepatitis C(CHC) patients. METHODS In this study, 73 patients with CHC were recruited. The CD36 genotype(G > A) was determined by a TaqM an real-time PCR system. Dietary assessment was carried out using a three-day food record to register the daily intake of macronutrients. Serum lipids and liver enzymes were measured by a dry chemistry assay. LF evaluated by transient elastography(Fibroscan~)and APRI score was classified as mild LF(F1-F2) and advanced LF(F3-F4).RESULTS Overall, the CD36 genotypic frequencies were AA(30.1%), AG(54.8%), and GG(15.1%), whereas the allelic A and G frequencies were 57.5% and 42.5%, respectively. CHC patients who were carriers of the CD36 AA genotype had a higher intake of calories attributable to total fat and saturated fatty acids than those with the non-AA genotypes. Additionally, aspartate aminotransferase(AST) serum values were higher in AA genotype carriers compared to non-AA carriers(91.7 IU/L vs 69.8 IU/L, P = 0.02). Moreover, the AA genotype was associated with an increase of 30.23 IU/L of AST(β = 30.23, 95%CI: 9.0-51.46, P = 0.006). Likewise, the AA genotype was associated with advanced LF compared to the AG(OR = 3.60, 95%CI: 1.16-11.15, P = 0.02) or AG + GG genotypes(OR = 3.52, 95%CI: 1.18-10.45, P = 0.02).CONCLUSION This study suggests that the CD36(rs1761667) AA genotype is associated with higher fat intake and more instances of advanced LF in CHC patients.

关键词： Hepatitis C virus infection CD36 receptor Lipids Liver fibrosis Mexico