Of a variety of chlorogenic acids, 5-CQA has been known to protect tissues from oxidative stress, modulate glucose metabolism, and mediate antiobesity effect [12, 21, 22]. world, and therefore the potential health consequences of coffee consumption are of great public interest. Heavy coffee drinking may result in sleep disorders, hypokalemia, and cardiac arrhythmias [1C4]. At the same time, several epidemiologic studies have reported that the risk of Parkinson’s disease, Alzheimer’s disease, and certain types of cancer is reduced in regular coffee consumers [5]. In addition, coffee has recently received scientific attention as current epidemiologic andin vivostudies have revealed its health benefits against obesity and metabolic disorders, especially type 2 diabetes [6C10]. These health advantages are mostly derived from chlorogenic acids contained in coffee beans [11C14]. Adipogenesis is a process of mesenchymal precursor cells differentiating into adipocytes where peroxisome proliferator-activated receptor (C/EBPad libitum= 8): the chow diet (CD), high-fat diet (HFD), 0.1%, 0.3%, and 0.9% green coffee bean extract-supplemented diet (GCD), and 0.15% 5-CQA-supplemented diet (CQD) groups (Sigma, MO, USA). The HFD was composed of 200?g of fat/kg (170?g of lard plus 30?g of corn oil) and 1%?(w/w) cholesterol. The GCD was identical to the HFD, except that it included 0.1%, 0.3%, or 0.9% green coffee bean extract. The CQD was also identical to the HFD except that it contained 0.15% 5-CQA. The diets were given in the form of pellets for eleven weeks. Food intake of the mice was recorded daily and their body weights were measured weekly during the feeding period. At the end of the experimental period, the animals were anesthetized with ether following a 12?h fasting period. Blood samples were drawn from the abdominal aorta into an EDTA-coated tube, and plasma samples were obtained by centrifugation at 1,000?g for 15?min at 4C. Visceral fat pads from four different regions (epididymal, perirenal, mesenteric, and retroperitoneal regions) were excised, rinsed with phosphate-buffered saline (PBS), and stored at ?80C until analysis. All animal experiments adhered to the Korean Food and Drug Administration (KFDA) guidelines. The protocols were reviewed and approved by the Institutional Animal Care and Use Committee (IACUC) of the Yonsei Laboratory Animal Research Center (YLARC) (Permit no. 2013-0104). All mice were maintained in the specific pathogen-free facility of the YLARC. 2.3. Histological Analysis The epididymal fat pads were fixed in neutral buffered formalin and embedded in paraffin, sectioned at thicknesses of 5?(C)= 8 SEM of three independent experiments (= 2, 3 per experiment) for each group. Data were analyzed by one-way analysis of variance (ANOVA), followed by Duncan’s multiple range tests. values 0.05 were considered statistically significant. 3. Results 3.1. HPLC Analysis of Decaffeinated Green Coffee Bean Extract The extraction yield of decaffeinated green coffee beans was 15%. The HPLC analysis (Figure 1) revealed that decaffeinated green coffee bean extract (Svetol) contained 16.4% 5-CQA. Open in a separate window Figure 1 NMI 8739 The HPLC chromatogram of decaffeinated green coffee bean extract. The peak was assigned based on the isolation of 5-CQA. 3.2. Body and Visceral Fat-Pad Weights After 11 weeks of experimental feeding, the final body weight gain was dose-dependently decreased in the 0.1GCD and 0.3GCD groups (Figure 2(a)). Food intake did NMI 8739 not differ among experimental organizations during the 11-week feeding period (Number 2(b)), and the food efficiency percentage (FER) was significantly decreased in mice fed the 0.3GCD when compared with mice fed the HFD (Number 2(c)). The total visceral fat-pad excess weight NMI 8739 of mice fed the HFD was reduced when the mice were supplemented with 0.3% green coffee bean extract (Figures 2(d) and 2(e)). No further reduction in body weight gain and visceral fat-pad excess weight was mentioned in the 0.9GCD group. Moreover, 0.3% green coffee bean extract decreased body weight gain and visceral adiposity as much as 0.15% 5-CQA did. Based on the results above, 0.3% appears to be the minimum effective dose at which green coffee bean extract reduces body weight gain and visceral fat-pad weight. Consequently, the histological analysis of epididymal adipose cells sections by H&E staining was done with the 0.3GCD group among the green coffee bean extract supplemented organizations. The staining data showed that the average adipocyte diameter was significantly smaller in the 0.3GCD and CQD organizations when compared with the HFD group (Numbers 2(f) and 2(g)). Open in a separate window Number 2 Effects of green coffee bean draw out and 5-CQA supplementation on body weight Rabbit polyclonal to IkB-alpha.NFKB1 (MIM 164011) or NFKB2 (MIM 164012) is bound to REL (MIM 164910), RELA (MIM 164014), or RELB (MIM 604758) to form the NFKB complex.The NFKB complex is inhibited by I-kappa-B proteins (NFKBIA or NFKBIB, MIM 604495), which inactivate NF-kappa-B by trapping it in the cytoplasm. gain, food effectiveness percentage (FER), and.Green coffee bean extract appears to control adipogenesis by reversing HFD-induced improved expression of galanin, its receptors, and adipogenic transcription factors. Since leptin secretion from adipose cells is positively correlated with TG accumulation in adipocytes, plasma leptin level is a biomarker in assessing obesity in both experimental animals and humans [33, 34]. collectively, decaffeinated green coffee bean extract appeared to reverse HFD-induced fat build up and insulin resistance by downregulating the genes involved in adipogenesis and swelling in visceral adipose cells. 1. Intro Coffee is one of the most widely consumed beverages in the world, and therefore the potential health consequences of coffee usage are of great general public interest. Heavy coffee drinking may result in sleep disorders, hypokalemia, and cardiac arrhythmias [1C4]. At the same time, several epidemiologic studies possess reported that the risk of Parkinson’s disease, Alzheimer’s disease, and particular types of malignancy is reduced in regular coffee consumers [5]. In addition, coffee has recently received scientific attention as current epidemiologic andin vivostudies have revealed its health benefits against obesity and metabolic disorders, especially type 2 diabetes [6C10]. These health advantages are mostly derived from chlorogenic acids contained in coffee beans [11C14]. Adipogenesis is definitely a process of mesenchymal precursor cells differentiating into adipocytes where peroxisome proliferator-activated receptor (C/EBPad libitum= 8): the chow diet (CD), high-fat diet (HFD), 0.1%, 0.3%, and 0.9% green coffee bean extract-supplemented diet (GCD), and 0.15% 5-CQA-supplemented diet (CQD) groups (Sigma, MO, USA). The HFD was composed of 200?g of fat/kg (170?g of lard in addition 30?g of corn oil) and 1%?(w/w) cholesterol. The GCD was identical to the HFD, except that it included 0.1%, 0.3%, or 0.9% green coffee bean extract. The CQD was also identical to the HFD except that it contained 0.15% 5-CQA. The diet programs were given in the form of pellets for eleven weeks. Food intake of the mice was recorded daily and their body weights were measured weekly during the feeding period. At the end of the experimental period, the animals were anesthetized with ether following a 12?h fasting period. Blood samples were drawn from your abdominal aorta into an EDTA-coated tube, and plasma samples were acquired by centrifugation at 1,000?g for 15?min at 4C. Visceral extra fat pads from four different areas (epididymal, perirenal, mesenteric, and retroperitoneal areas) were excised, rinsed with phosphate-buffered saline (PBS), and stored at ?80C until analysis. All animal experiments adhered to the Korean Food and Drug Administration (KFDA) recommendations. The protocols were reviewed and authorized by the Institutional Animal Care and Use Committee (IACUC) of the Yonsei Laboratory Animal Research Center (YLARC) (Permit no. 2013-0104). All mice were maintained in the specific pathogen-free facility of the YLARC. 2.3. Histological Analysis The epididymal extra fat pads were fixed in neutral buffered formalin and inlayed in paraffin, sectioned at thicknesses of 5?(C)= 8 SEM of three independent experiments (= 2, 3 per experiment) for each group. Data were analyzed by one-way analysis of variance (ANOVA), followed by Duncan’s multiple range checks. ideals 0.05 were considered statistically significant. 3. Results 3.1. HPLC Analysis of Decaffeinated Green Coffee Bean Extract The extraction yield of decaffeinated green coffee beans was 15%. The HPLC analysis (Number 1) exposed that decaffeinated green coffee bean extract (Svetol) contained 16.4% 5-CQA. Open in a separate window Number 1 The HPLC chromatogram of decaffeinated green coffee bean draw out. The peak was assigned based on the isolation of 5-CQA. 3.2. Body and Visceral Fat-Pad Weights After 11 weeks of experimental feeding, the final body weight gain was dose-dependently decreased in the 0.1GCD and 0.3GCD groups (Number 2(a)). Food intake did not differ among experimental organizations during the 11-week feeding period (Number 2(b)), and the food efficiency percentage (FER) was significantly decreased in mice fed the 0.3GCD when compared with mice fed the HFD (Number 2(c)). The total visceral fat-pad excess weight of mice fed the HFD was reduced when the mice were supplemented with 0.3% green coffee bean extract (Figures 2(d) and 2(e)). No further reduction in body weight gain and visceral fat-pad excess weight was mentioned in the 0.9GCD group. Moreover, 0.3% green coffee bean extract decreased body weight gain and visceral adiposity as much as 0.15% 5-CQA did. Based on the results above, 0.3% appears to be the minimum effective dose at which green coffee bean extract reduces body weight gain and visceral fat-pad weight. Consequently, the histological analysis of epididymal adipose cells sections by H&E staining was done with the.
