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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ortega, Francisco José Mercader, Josep María Catalán, Victoria Moreno-Navarrete, José María Pueyo, Neus Sabater, Mónica Gómez-Ambrosi, Javier Anglada, Roger Fernández-Formoso, José Antonio Ricart, Wifredo Frühbeck, Gema Fernández-Real, José Manuel |
| Description | Country affiliation: Spain Author Affiliation: Ortega FJ ( Department of Diabetes, Endocrinology and Nutrition, Institut d'Investigació Biomédica de Girona, Girona, Spain.) |
| Abstract | BACKGROUND: Genomic studies have yielded important insights into the pathogenesis of obesity. Circulating microRNAs (miRNAs) are valuable biomarkers of systemic diseases and potential therapeutic targets. We sought to define the circulating pattern of miRNAs in obesity and examine changes after weight loss. METHODS: We assessed the genomewide circulating miRNA profile cross-sectionally in 32 men and after surgery-induced weight loss in 6 morbidly obese patients. The most relevant miRNAs were cross-sectionally validated in 80 men and longitudinally in 22 patients (after surgery-induced weight loss). We evaluated the effects of diet-induced weight loss in 9 obese patients. Thirty-six circulating miRNAs were associated with anthropometric variables in the initial sample. RESULTS: In the validation study, morbidly obese patients showed a marked increase of miR-140-5p, miR-142-3p (both P < 0.0001), and miR-222 (P = 0.0002) and decreased levels of miR-532-5p, miR-125b, miR-130b, miR-221, miR-15a, miR-423-5p, and miR-520c-3p (P < 0.0001 for all). Interestingly, in silico targets leukemia inhibitory factor receptor (LIFR) and transforming growth factor receptor (TGFR) of miR-140-5p, miR-142-3p, miR-15a, and miR-520c-3p circulated in association with their corresponding miRNAs. Moreover, a discriminant function of 3 miRNAs (miR-15a, miR-520c-3p, and miR-423-5p) was specific for morbid obesity, with an accuracy of 93.5%. Surgery-induced (but not diet-induced) weight loss led to a marked decrease of miR-140-5p, miR-122, miR-193a-5p, and miR-16-1 and upregulation of miR-221 and miR-199a-3p (P < 0.0001 for all). CONCLUSIONS: Circulating miRNAs are deregulated in severe obesity. Weight loss-induced changes in this profile and the study of in silico targets support this observation and suggest a potential mechanistic relevance. |
| File Format | HTM / HTML |
| ISSN | 00099147 |
| e-ISSN | 15308561 |
| Journal | Clinical Chemistry |
| Issue Number | 5 |
| Volume Number | 59 |
| Language | English |
| Publisher | American Association for Clinical Chemistry |
| Publisher Date | 2013-05-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Body Mass Index Micrornas Research Support, Non-u.s. Gov't Body Weight Cross-sectional Studies Oligonucleotide Array Sequence Analysis Biological Markers Real-time Polymerase Chain Reaction Discipline Laboratory Medicine Gene Expression Profiling Randomized Controlled Trial Blood Discipline Clinical Chemistry Obesity, Morbid Surgery Genetics Genome-wide Association Study |
| Content Type | Text |
| Resource Type | Article |
| Subject | Biochemistry (medical) Clinical Biochemistry |
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