scholarly journals A low-protein diet induces body weight loss and browning of subcutaneous white adipose tissue through enhanced expression of hepatic fibroblast growth factor 21 (FGF21)

2017 ◽  
Vol 61 (8) ◽  
pp. 1600725 ◽  
Author(s):  
Albert Pérez-Martí ◽  
Maite Garcia-Guasch ◽  
Anna Tresserra-Rimbau ◽  
Alexandra Carrilho-Do-Rosário ◽  
Ramon Estruch ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Adipose Tissue ◽  
Growth Factor ◽  
Body Weight Loss ◽  
Fibroblast Growth Factor 21 ◽  
Fibroblast Growth ◽  
Subcutaneous White Adipose Tissue ◽  
Low Protein ◽  
Enhanced Expression

Fibroblast growth factor 21 (FGF-21) in obese children: no relationship to growth, IGF-1, and IGFBP-3

2016 ◽  
Vol 30 (2) ◽  
Author(s):  
Thomas Reinehr ◽  
Christian L. Roth ◽  
Joachim Woelfle
Keyword(s):  
Weight Loss ◽  
Growth Factor ◽  
Fibroblast Growth Factor ◽  
Critical Role ◽  
Fibroblast Growth Factor 21 ◽  
Fibroblast Growth ◽  
Obese Children ◽  
Pubertal Stage ◽  
The Impact ◽  
Igfbp 3

AbstractBackground:Fibroblast growth factor 21 (FGF-21) is a hepatic protein that plays a critical role in liver, adipose tissue, and bone metabolism. Animal models reported an increase of FGF-21 and associated growth disturbances in undernutrition. Therefore, we studied the impact of weight loss in obese children on growth, FGF-21, and insulin-like factor 1 (IGF-1) concentrations.Methods:We analyzed height, serum concentrations of FGF-21, IGF-1, IGFBP-3, leptin, and insulin at baseline and 1 year later in 30 obese children with substantial weight loss (reduction >0.5 BMI-SDS) and in 30 obese children of similar age, gender, and pubertal stage with stable BMI-SDS. All children participated in a 1-year lifestyle intervention. Height and IGF-1 was transformed to standard deviation score (SDS). Multiple linear regression analyses adjusted for age, gender, and pubertal stage were performed.Results:At baseline, height-SDS was significantly related to IGF-1-SDS (β-coefficient 0.68 95% confidence interval (95% CI)±0.49; p=0.008) and leptin (β-coefficient 0.042 95% CI±0.030; p=0.008), but not to FGF-21 or insulin. FGF-21 was not significantly associated with IGF-1 or IGFBP-3. In longitudinal analysis, changes of FGF-21 were not significantly related to changes of height, IGF-1-SDS or IGFBP-3. However, in the subgroup of 30 children with substantial BMI-SDS reduction, FGF-21, leptin, insulin, and HOMA decreased significantly.Conclusion:As there was no significant association between FGF-21 and growth or IGF-1 both in cross-sectional and longitudinal analyses, these findings do not support the hypothesis that FGF-21 is involved in growth of obese children. Further studies are necessary to understand the multiple alterations in the growth hormone (GH) axis in obese children.

Analysis of Adipose Tissue in Relation to Body Weight Loss in Man

1958 ◽  
Vol 13 (1) ◽  
pp. 129-134 ◽  
Author(s):  
Cecil Entenman ◽  
William H. Goldwater ◽  
Nell S. Ayres ◽  
Albert R. Behnke
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Adipose Tissue ◽  
Body Weight Loss

scholarly journals Identification of Sp1 as a Transcription Activator to Regulate Fibroblast Growth Factor 21 Gene Expression

2017 ◽  
Vol 2017 ◽  
pp. 1-10
Author(s):  
Shuqin Chen ◽  
Huating Li ◽  
Jing Zhang ◽  
Shan Jiang ◽  
Mingliang Zhang ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Growth Factor ◽  
Fibroblast Growth Factor ◽  
Target Genes ◽  
Proximal Promoter ◽  
Fibroblast Growth Factor 21 ◽  
Obese Mouse ◽  
Primary Role ◽  
Fibroblast Growth ◽  
Transcription Activator

Fibroblast growth factor 21 (FGF21) is a metabolic hormone with multiple beneficial effects on lipid and glucose homeostasis. Previous study demonstrated that FGF21 might be one of the Sp1 target genes. However, the transcriptional role of Sp1 on FGF21 in adipose tissue and liver has not been reported. In this study, we found that the proximal promoter of mouse FGF21 is located between −63 and −20 containing two putative Sp1-binding sites. Sp1 is a mammalian transcription factor involved in the regulation of many genes during physiological and pathological processes. Our study showed that overexpression of Sp1 or suppressing Sp1 expression resulted in increased or reduced FGF21 promoter activity, respectively. Mutation analysis demonstrated that the Sp1-binding site located between −46 and −38 plays a primary role in transcription of FGF21. Electrophoretic mobility shift assay and chromatin immunoprecipitation analysis indicated that Sp1 specifically bound to this region. Furthermore, the binding activity of Sp1 was significantly increased in adipose tissues of HFD-induced obese mouse and liver of DEN-treated mouse. Thus, our results demonstrate that Sp1 positively regulates the basal transcription of FGF21 in the liver and adipose tissue and contributes to the obesity-induced FGF21 upregulation in mouse adipose tissue and hepatic FGF21 upregulation in hepatocarcinogenesis.

scholarly journals Adipose tissue inflammation contributes to body weight loss induced by experimental chronic food allergy in mice

2011 ◽  
Vol 1 (S1) ◽  
Author(s):  
Denise Carmona Cara ◽  
Luana PA Dourado ◽  
Mria LM Noviello ◽  
Debora M Alvarenga ◽  
Gustavo B Menezes ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Adipose Tissue ◽  
Food Allergy ◽  
Body Weight Loss ◽  
Adipose Tissue Inflammation ◽  
Tissue Inflammation

scholarly journals Central Fibroblast Growth Factor 21 Browns White Fat via Sympathetic Action in Male Mice

Endocrinology ◽  
2015 ◽  
Vol 156 (7) ◽  
pp. 2470-2481 ◽  
Author(s):  
Nicholas Douris ◽  
Darko M. Stevanovic ◽  
ffolliott M. Fisher ◽  
Theodore I. Cisu ◽  
Melissa J. Chee ◽  
...  
Keyword(s):  
Nervous System ◽  
Adipose Tissue ◽  
Growth Factor ◽  
Sympathetic Nervous System ◽  
Fibroblast Growth Factor ◽  
Fibroblast Growth Factor 21 ◽  
Fibroblast Growth ◽  
Male Mice ◽  
Sympathetic Nervous ◽  
The Brain

Fibroblast growth factor 21 (FGF21) has multiple metabolic actions, including the induction of browning in white adipose tissue. Although FGF21 stimulated browning results from a direct interaction between FGF21 and the adipocyte, browning is typically associated with activation of the sympathetic nervous system through cold exposure. We tested the hypothesis that FGF21 can act via the brain, to increase sympathetic activity and induce browning, independent of cell-autonomous actions. We administered FGF21 into the central nervous system via lateral ventricle infusion into male mice and found that the central treatment increased norepinephrine turnover in target tissues that include the inguinal white adipose tissue and brown adipose tissue. Central FGF21 stimulated browning as assessed by histology, expression of uncoupling protein 1, and the induction of gene expression associated with browning. These effects were markedly attenuated when mice were treated with a β-blocker. Additionally, neither centrally nor peripherally administered FGF21 initiated browning in mice lacking β-adrenoceptors, demonstrating that an intact adrenergic system is necessary for FGF21 action. These data indicate that FGF21 can signal in the brain to activate the sympathetic nervous system and induce adipose tissue thermogenesis.

scholarly journals Fasting decreases plasma FGF21 in obese subjects and the expression of FGF21 receptors in adipose tissue in both lean and obese subjects

2018 ◽  
Vol 239 (1) ◽  
pp. 73-80 ◽  
Author(s):  
Eva B Nygaard ◽  
Cathrine Ørskov ◽  
Thomas Almdal ◽  
Henrik Vestergaard ◽  
Birgitte Andersen
Keyword(s):  
Gene Expression ◽  
Adipose Tissue ◽  
Lipid Metabolism ◽  
Growth Factor ◽  
Fibroblast Growth Factor ◽  
Fibroblast Growth Factor 21 ◽  
Fibroblast Growth ◽  
Adipose Tissues ◽  
Blood Samples ◽  
Obese Subjects

Fibroblast growth factor 21 (FGF21) is a metabolic regulator of energy and lipid metabolism. FGF21 is highly expressed in liver while FGF21 receptors (beta-klotho (KLB) and FGFR1c) are highly expressed in white adipose tissues (WATs). Plasma FGF21 has been shown to be increased after 7–10 days of fasting but oppositely plasma FGF21 is also increased in obesity. The aim of this study was to measure the effect of 60 h of fasting on plasma FGF21 levels in obese and lean subjects and to determine the gene expression of KLB and FGFR1c in the subcutaneous WAT before, during and after 60 h of fasting. Eight obese (BMI >30 kg/m2) and seven lean subjects (BMI <25 kg/m2) were fasted for 60 h and blood samples were taken at time 0 and after 12, 36 and 60 h of fasting. A biopsy from the subcutaneous WAT was taken at time 0, 12 and 60 h of fasting. FGF21 was measured in plasma by an ELISA and mRNA expression of KLB and FGFR1c was measured in WAT by quantitative PCR (qPCR). The fast significantly decreased plasma FGF21 in obese subjects while no change in plasma FGF21 was observed in lean subjects. Interestingly, KLB was significantly decreased in WAT in response to fasting in both lean and obese subjects indicating a potential important adaptive regulation of KLB in response to fasting.

scholarly journals Increased Circulating and Epicardial Adipose Tissue mRNA Expression of Fibroblast Growth Factor-21 After Cardiac Surgery: Possible Role in Postoperative Inflammatory Response and Insulin Resistance

2011 ◽  
pp. 757-767 ◽  
Author(s):  
T. KOTULÁK ◽  
J. DRÁPALOVÁ ◽  
P. KOPECKÝ ◽  
Z. LACINOVÁ ◽  
P. KRAMÁŘ ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Adipose Tissue ◽  
Cardiac Surgery ◽  
Growth Factor ◽  
Mrna Expression ◽  
Fibroblast Growth Factor ◽  
Serum Glucose ◽  
Fibroblast Growth Factor 21 ◽  
Fibroblast Growth ◽  
Baseline Serum

We studied the changes in serum fibroblast growth factor-21 (FGF-21) concentrations, its mRNA, and protein expression in skeletal muscle and adipose tissue of 15 patients undergoing cardiac surgery. Blood samples were obtained: prior to initiation of anesthesia, prior to the start of extracorporeal circulation, upon completion of the surgery, and 6, 24, 48, and 96 hours after the end of the surgery. Tissue sampling was performed at the start and end of surgery. The mean baseline serum FGF-21 concentration was 63.1 (43.03-113.95) pg/ml and it increased during surgery with peak 6 hours after its end [385.5 (274.55-761.65) pg/ml, p<0.001], and returned to baseline value [41.4 (29.15-142.83) pg/ml] 96 hours after the end of the surgery. Serum glucose, insulin, CRP, IL-6, IL-8, MCP-1, and TNF-alpha concentrations significantly increased during the surgery. Baseline FGF-21 mRNA expression in skeletal muscle was higher than in both adipose tissue depots and it was not affected by the surgery. Epicardial fat FGF-21 mRNA increased after surgery. Muscle FGF-21 mRNA positively correlated with blood glucose levels at the end of the surgery. Our data suggest a possible role of FGF-21 in the regulation of glucose metabolism and insulin sensitivity in surgery-related stress.

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