Hepatocellular and/or mesenchymal iron deposition, usually slight or mild, has been reported since then in nonalcoholic fatty liver disease (NAFLD) and nonalcoholic steatohepatitis. 44 The clinical relevance of iron excess in these disorders, in terms of fibrosis development and cancer risk, is actively debated, 45 but increasing data indicate that iron may sustain disease activity and/or contribute to its progression. 46, 47, 48 and 49 Interestingly, NAFLD patients with mixed or mesenchymal iron overload (a pattern of iron deposition consistent with a “hepcidin-excess model”) seem more likely to develop fibrosis than those with pure parenchymal RGFP966 mouse iron deposits (a pattern of iron deposition consistent
with a “hepcidin-deficient model”). 47 and 49 The mechanism of iron deposition in NAFLD/dysmetabolic iron overload syndrome likely is multifactorial: sex, diet, disease activity,
genetic background (HFE hemochromatosis gene mutations), ethnicity, and (micro)inflammation all may account for the variability of both iron excess and its pattern of distribution. We hypothesize that a fraction of dysmetabolic/NAFLD patients with normal-low transferrin saturation and mixed/mesenchymal hepatic iron deposits may represent a subgroup of patients with prominent insulin resistance and hepcidin induction via the gluconeogenic PPARGC1A/CREBH-driven pathway described here. In these patients, hepcidin, depending on the degree Palbociclib ic50 and duration of its induction, may modify iron traffic locally or systemically and lead, respectively, to simple hepatic iron retention with marginal systemic reflections (ie, mesenchymal/mixed hepatic iron accumulation with normal or subnormal transferrin saturation), or substantial tissue iron retention, hypoferremia, and iron-restricted anemia. Further studies are needed to prove that the gluconeogenic signal-driven induction of hepcidin in starving mice also takes place in other instances of activated gluconeogenesis and insulin resistance, such as diabetes, obesity, or NAFLD. If so, because of the increasingly recognized negative why effect of iron excess on the progression of these disorders, the novel regulatory pathway
reported here may offer potential new therapeutic targets to prevent or correct iron disturbances in common metabolic disorders. “
“The U.S. is the world’s largest wheat producing and exporting country. World wheat trade is expected to increase as the population grows in Egypt, Algeria, Iraq, Brazil, Mexico, Indonesia, Nigeria, and other developing countries (USDA ERS, 2012). Wheat is the third largest crop planted in the U.S., behind corn and soybean, and is expected to remain an important agricultural commodity for years to come. It generates about 198,000 jobs and accounts for $20.6 billion to the U.S. economy (Richardson et al., 2006). In 2007, Texas ranked as the 4th largest wheat producing state with about 3.84 million acres in production (Census of Agriculture, 2007).
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