Palomino-Schatzlein, Martina published the artcileCombining metabolic profiling of plasma and faeces as a fingerprint of insulin resistance in obesity, Safety of 3-Hydroxyphenylacetic acid, the publication is Clinical Nutrition (2020), 39(7), 2292-2300, database is CAplus and MEDLINE.
Insulin resistance (IR) is one of the main risk factor for type 2 diabetes mellitus (T2DM). Nevertheless, its underlying pathophysiol. is not completely established because IR is triggered by a complex interconnection of numerous factors impairing metabolism, promoting metabolome changes. We used a metabolomics approach to identify plasma and faecal metabolites related to IR and obesity. We explored a cohort of 44 subjects at baseline, with 30 of them followed two years thereafter in a longitudinal study after an hypocaloric diet in the obese subjects. In all individuals as a whole, 11 plasma metabolites pos. associated with BMI (acetoacetate, creatinine, glycerol, glycerol of lipids, VLDL, fatty esters, myo-inositol, phenylalanine, threonine, tyrosine and valine) and one neg. (phosphocholine), with similar associations at baseline and follow-up. Four of these metabolites (myo-inositol, valine, acetoacetate and phosphocholine) remained significant within obese and non-obese groups. Thirteen faecal metabolites pos. associated with BMI at baseline and one neg. (glutamine). However, these correlations did not remain significant at follow-up. The correlations were not always consistent at baseline and at follow-up and the metabolites that showed significant correlations were different for the obese group compared with the control group. The percent change in plasma Δethanolamine, Δglucose, Δuracil and Δhypoxanthine were pos. associated with ΔBMI. The percent change in plasma Δphosphocholine and of faecal Δhydroxyphenylacetate, and Δ2-hydroxyphenylacetate were associated with ΔHOMA-IR in those patients that lost weight Faecal branched chain amino acids (BCAAs) in faeces were associated with IR, following a similar pattern to that described for plasma BCAAs. Choline derivates had an opposite behavior. The integration of plasma and faecal metabolites represents a valuable fingerprint that could help in the identification of patients at risk for IR and in the design of novel therapeutic strategies to prevent IR and the development of overt T2DM in the context of obesity. The results are coherent with diet having a much greater impact on faecal metabolomic profile than on plasma metabolome.
Clinical Nutrition published new progress about 621-37-4. 621-37-4 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Phenol,Natural product, name is 3-Hydroxyphenylacetic acid, and the molecular formula is C8H8O3, Safety of 3-Hydroxyphenylacetic acid.
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