Dietary Approaches for Obesity Treatment and Prevention in Children and Adolescents

Abstract Background Anxiety and depression are more common in children with obesity than in children of normal weight, but it is unclear whether this association is independent of other known risk factors. Interpretation of results from previous studies is hampered by methodological limitations, including self-reported assessment of anxiety, depression, and anthropometry. The aim of this study was to investigate whether obesity increases the risk of anxiety or depression independently of other risk factors in a large cohort of children and adolescents, using robust measures with regard to exposure and outcome. Methods Children aged 6–17 years in the Swedish Childhood Obesity Treatment Register (BORIS, 2005–2015) were included (n = 12,507) and compared with a matched group (sex, year of birth, and area of residence) from the general population (n = 60,063). The main outcome was a diagnosis of anxiety or depression identified through ICD codes or dispensed prescribed medication within 3 years after the end of obesity treatment. Hazard ratios (HRs) with 95% confidence intervals (CIs) from Cox proportional models were adjusted for several known confounders. Results Obesity remained a significant risk factor for anxiety and depression in children and adolescents after adjusting for Nordic background, neuropsychiatric disorders, family history of anxiety/depression, and socioeconomic status. Girls in the obesity cohort had a 43% higher risk of anxiety and depression compared to girls in the general population (adjusted HR 1.43, 95% CI 1.31–1.57; p < 0.0001). The risk in boys with obesity was similar (adjusted HR 1.33, 95% CI 1.20–1.48; p < 0.0001). In sensitivity analyses, excluding subjects with neuropsychiatric disorders and a family history of anxiety/depression, the estimated risks in individuals with obesity were even higher compared with results from the main analyses (adjusted HR [95% CI]: girls = 1.56 [1.31–1.87], boys = 2.04 [1.64–2.54]). Conclusions Results from this study support the hypothesis that obesity per se is associated with risk of both anxiety and depression in children and adolescents.

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Cytochrome P450 Epoxygenase Cyp2j13 Regulates Murine Brown Adipogenesis

Current Developments in Nutrition ◽

10.1093/cdn/nzaa063_037 ◽

2020 ◽

Vol 4 (Supplement_2) ◽

pp. 1639-1639

Author(s):

Katie Graham ◽

Yang Yang ◽

Ahmed Bettaieb ◽

Ling Zhao

Keyword(s):

Cytochrome P450 ◽

Mrna Expression ◽

Adipocyte Differentiation ◽

Obesity Treatment ◽

Brown Adipocyte ◽

Obese Mice ◽

Brown Adipocytes ◽

Treatment And Prevention ◽

The Impact ◽

Brown Adipogenesis

Abstract Objectives Brown adipocytes have emerged as novel targets for obesity treatment and prevention. Cytochrome P450 (CYP) epoxygenases, primarily CYP2J and CYP2C isoforms, produce epoxy fatty acids (EpFAs), which have been suggested to play important roles in the regulation of white adipogenesis and obesity. However, the roles of CYP epoxygenases in brown adipogenesis remain unexplored. In this study, we sought to characterize mRNA expression patterns of Cyp2j and 2c subfamily members during adipogenesis of human and murine brown adipocytes and in obese mice and investigate the impact of modulating the expression of Cyp2j13 on brown adipogenesis. Methods The mRNA expression of various Cyp2j and Cyp2c isoforms were examined throughout murine and human brown adipocyte differentiation and in the brown adipose tissue (BAT) of diet-induced obese and control mice. To induce epoxygenase overexpression, stable transfection of murine brown preadipocytes with either Cyp2j13 or a vector control was performed. Protein and mRNA expression of Cyp2j13 and brown marker genes were analyzed. Results Expression of murine Cyp2j isoforms Cyp2j6, Cyp2j8, Cyp2j9, and Cyp2j13, and the human isoform CYP2J2 consistently decreased throughout brown adipocyte differentiation, while expression of Cyp2c isoforms did not elicit consistent patterns. Moreover, Cyp2j expression in BAT was enhanced in diet-induced obese mice compared to the controls. Due to its high relative abundance and significance, Cyp2j13 was selected for further investigation. Overexpression of Cyp2j13 significantly suppressed murine brown adipocyte differentiation as evaluated by lipid accumulation and brown marker gene UCP1 expression. Conclusions Our results suggest that CYP epoxygenases may play important roles in brown adipogenesis. Cyp2j13, in particular, may be a novel target for brown adipogenesis, and consequently, for obesity treatment and prevention. Further studies using CYP2J inhibitors and Cyp2j13 knockdown are warranted. Funding Sources The work was supported by NIH 1R15DK114790–01A1 (to L.Z.), K99DK100736 and R00DK100736 (to A.B.).

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