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Wang K, Zhou M, Gong X, Zhou Y, Chen J, Ma J, Zhang P. Starch-protein interaction effects on lipid metabolism and gut microbes in host. Front Nutr 2022; 9:1018026. [PMID: 36466418 PMCID: PMC9709417 DOI: 10.3389/fnut.2022.1018026] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 10/31/2022] [Indexed: 07/20/2023] Open
Abstract
The purpose of this experiment was to investigate the effects of different starch and protein levels on lipid metabolism and gut microbes in mice of different genders. A total of 160 male mice were randomly assigned to sixteen groups and fed a 4 × 4 Latin square design with dietary protein concentrations of 16, 18, 20, and 22%, and starch concentrations of 50, 52, 54, and 56%, respectively. The results of the study showed that different proportions of starch and protein had obvious effects on the liver index of mice, and there was a significant interaction between starch and protein on the liver index (p = 0.005). Compared with other protein ratio diets, 18% protein diet significantly increased the serum TBA concentration of mice (p < 0.001), and different starch ratio diets had no effect on serum TBA concentration (p = 0.442). It was proved from the results of ileal tissue HE staining that the low protein diet and the low starch diet were more favorable. There was a significant interaction between diets with different starch and protein levels on Bacteroidetes, Firmicutes and Proteobacteria abundance in feces of mice (p < 0.001). Compared with 16 and 18% protein ratio diets, both 20 and 22% protein diets significantly decreased the Parabacteroides and Alistipes abundance in feces of mice (p < 0.05), and 52% starch ratio diet significantly decreased the Parabacteroides and Alistipes abundance than 50% starch ratio diet of mice (p < 0.05). There was a significant interaction between diets with different starch and protein levels on Parabacteroides (p = 0.014) and Alistipes (p = 0.001) abundance in feces of mice. Taken together, our results suggest that a low protein and starch diet can alter lipid metabolism and gut microbes in mice.
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Affiliation(s)
- Kaijun Wang
- Animal Nutritional Genome and Germplasm Innovation Research Center, College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
- College of Animal Science and Technology, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, Guangxi, China
| | - Miao Zhou
- Animal Nutritional Genome and Germplasm Innovation Research Center, College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Xinyu Gong
- Animal Nutritional Genome and Germplasm Innovation Research Center, College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Yuqiao Zhou
- Animal Nutritional Genome and Germplasm Innovation Research Center, College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Jiayi Chen
- Academician Workstation, Changsha Medical University, Changsha, Hunan, China
| | - Jie Ma
- Animal Nutritional Genome and Germplasm Innovation Research Center, College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
| | - Peihua Zhang
- Animal Nutritional Genome and Germplasm Innovation Research Center, College of Animal Science and Technology, Hunan Agricultural University, Changsha, Hunan, China
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Wang K, Peng X, Yang A, Huang Y, Tan Y, Qian Y, Lv F, Si H. Effects of Diets With Different Protein Levels on Lipid Metabolism and Gut Microbes in the Host of Different Genders. Front Nutr 2022; 9:940217. [PMID: 35782952 PMCID: PMC9240812 DOI: 10.3389/fnut.2022.940217] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 05/30/2022] [Indexed: 12/21/2022] Open
Abstract
The purpose of this experiment was to investigate the effects of different protein levels on lipid metabolism and gut microbes in mice of different genders. A total of 60 mice (30 female and 30 male) were randomly assigned to six groups and fed female mice with low protein diet (FLP), basal protein diet (FBD), and high protein diet (FHP). Similarly, the male mice fed with low protein diet (MLP), basal protein diet (MBD), and high protein diet (MHP). The low protein diet contained 14% CP, the basal diet contained 20% CP, and the high protein diet contained 26% CP. The results of the study showed that both basal and high protein diets significantly reduced the perirenal adipose tissues (PEAT) index in male mice compared to low protein diet (p < 0.05). For the gut, the FHP significantly increased the relative gut weight compared to the FBD and FLP (p < 0.05). At the same time, the FHP also significantly increased the relative gut length compared with the FBD and FLP (p < 0.05). The MHP significantly increased TC concentration compared with the MLP (p < 0.05), and the MBD tended to increase TC concentration compared with the MLP in serum (p = 0.084). The histomorphology result of the jejunum and ileum showed that a low protein diet was beneficial to the digestion and absorption of nutrients in the small intestine of mice. While different protein levels had no effect on the total number of fecal microbial species in mice, different protein levels had a significant effect on certain fecal microbes in mice, the absolute abundance of Verrucomicrobia in the feces of male mice was significantly higher in both high and basal protein diets than in the low protein diet (p < 0.05). The high protein diet significantly reduced the absolute abundance of Patescibacteria in the feces of female mice compared to both the basal and low protein diets (p < 0.05). The absolute abundance of Patescibacteria in male feces was not affected by dietary protein levels (p > 0.05). Taken together, our results suggest that a low protein diet can alter fat deposition and lipid metabolism in mice, and that it benefited small intestinal epithelial structure and microbes.
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Affiliation(s)
- Kaijun Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
- Animal Nutritional Genome and Germplasm Innovation Research Center, College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Xiaomin Peng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Anqi Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yiqin Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yuxiao Tan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yajing Qian
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Feifei Lv
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Hongbin Si
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Animal Science and Technology, Guangxi University, Nanning, China
- *Correspondence: Hongbin Si,
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Li Z, Ding L, Zhu W, Hang S. Determination of the Effects of Duodenal Infusion Soy Protein Hydrolysate on Hepatic Glucose and Lipid Metabolism in Pigs Through Multi-Omics Analysis. Front Nutr 2022; 9:838617. [PMID: 35558750 PMCID: PMC9087715 DOI: 10.3389/fnut.2022.838617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 04/01/2022] [Indexed: 11/13/2022] Open
Abstract
High animal protein intake increases hepatic lipid deposition and the risk of diabetes. However, the effects of high plant protein (HPP) intake on glycaemic responses and hepatic lipid metabolism in healthy people, as well as the underlying mechanisms, remain unclear. The current study explored the metabolomic and transcriptomic responses in the livers of pigs to assess the effects of HPP intake on host glucose and lipid metabolism. Sixteen pigs were infused with sterile saline or soy protein hydrolysate (SPH; 70 g/day) through a duodenal fistula twice daily during a 15 days experimental period. Hepatic metabolomic and transcriptomic analyses were performed, and the serum and hepatic biochemical parameters were measured. The results revealed that SPH infusion decreased serum glucose, hepatic triglyceride (TG), total cholesterol and low-density lipoprotein cholesterol levels, while it increased serum urea and eight hepatic amino acid levels (P < 0.05). Hepatic metabolomics displayed that SPH treatment produced seven different metabolites, four of which were related to lipid metabolism and one was related to glucose metabolism. In particular, lower (P < 0.05) glycocholic acid and glucose 1-phosphate levels and higher (P < 0.05) phosphatidylethanolamine (PE), arachidonic acid, prostaglandin F2α, l-carnitine and indole-3 acetic acid levels were observed following SPH infusion. A further metabolic pathway enrichment analysis found that these differential metabolites were mainly enriched in pathways related to lipid and glucose metabolism. Hepatic transcriptomics also demonstrated that multiple genes related to glucose and lipid metabolism were affected by SPH (P < 0.05). Together, SPH infusion reduced the hepatic TG levels by accelerating fatty acid β-oxidation and inhibiting TG synthesis. In addition, SPH infusion reduced the serum glucose levels by promoting hepatic glucose uptake and glycolysis. This study's result demonstrated that HPP intake regulated glycaemic responses and hepatic lipid metabolism in pigs without increasing the risk of hepatic lipid deposition and hyperglycaemia.
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Affiliation(s)
- Zhongxin Li
- National Center for International Research on Animal Gut Nutrition, Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, Laboratory of Gastrointestinal Microbiology, Nanjing Agricultural University, Nanjing, China
| | - Liren Ding
- National Experimental Teaching Center for Animal Science, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Weiyun Zhu
- National Center for International Research on Animal Gut Nutrition, Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, Laboratory of Gastrointestinal Microbiology, Nanjing Agricultural University, Nanjing, China
| | - Suqin Hang
- National Center for International Research on Animal Gut Nutrition, Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, Laboratory of Gastrointestinal Microbiology, Nanjing Agricultural University, Nanjing, China
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A high-protein diet containing inulin/oligofructose supports body weight gain associated with lower energy expenditure and carbohydrate oxidation, and alters faecal microbiota in C57BL/6 mice. J Nutr Sci 2021; 10:e50. [PMID: 34290864 PMCID: PMC8278163 DOI: 10.1017/jns.2021.42] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 06/04/2021] [Accepted: 06/17/2021] [Indexed: 11/06/2022] Open
Abstract
Prebiotic supplements and high-protein (HP) diets reduce body weight and modulate intestinal microbiota. Our aim was to elucidate the combined effect of an inulin/oligofructose (FOS) and HP diet on body weight gain, energy metabolism and faecal microbiota. Forty male C57BL/6NCrl mice were fed a control (C) diet for 2 weeks and allocated to a C or HP (40 % protein) diet including no or 10 % inulin/FOS (C + I and HP + I) for 4 weeks. Inulin/FOS was added in place of starch and cellulose. Body weight, food intake, faecal energy and nitrogen were determined. Indirect calorimetry and faecal microbiota analysis were performed after 3 weeks on diets. Body weight gain of HP-fed mice was 36 % lower than HP + I- and C-fed mice (P < 0⋅05). Diet digestibility and food conversion efficiency were higher in HP + I- than HP-fed mice (P < 0⋅01), while food intake was comparable between groups. Total energy expenditure (heat production) was 25 % lower in HP + I- than in C-, HP- and C + I-fed mice (P < 0⋅001). Carbohydrate oxidation tended to be 24 % higher in HP- than in HP + I-fed mice (P < 0⋅05). Faecal nitrogen excretion was 31-45 % lower in C-, C + I- and HP + I- than in HP-fed mice (P < 0⋅05). Faecal Bacteroides-Prevotella DNA was 2⋅3-fold higher in C + I- and HP + I- relative to C-fed mice (P < 0⋅05), but Clostridium leptum DNA abundances was 79 % lower in HP + I- than in HP-fed mice (P < 0⋅05). We suggest that the higher conversion efficiency of dietary energy of HP + I but not C + I-fed mice is caused by higher digestibility and lower heat production, resulting in increased body mass.
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Gehring J, Azzout-Marniche D, Chaumontet C, Piedcoq J, Gaudichon C, Even PC. Rats Self-Select a Constant Protein-to-Carbohydrate Ratio Rather Than a Constant Protein-to-Energy Ratio and Have Low Plasma FGF21 Concentrations. J Nutr 2021; 151:1921-1936. [PMID: 33830241 DOI: 10.1093/jn/nxab056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/12/2021] [Accepted: 02/11/2021] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Under dietary self-selection (DSS), rats ingest 25-30% of energy as protein. This high level appears to be explained by metabolic benefits related to reduced carbohydrate dependence and associated pathologies. However, the mechanisms underlying these choices remain largely misunderstood. OBJECTIVES The aim was to test the hypothesis that in a DSS model, rats select a protein-to-energy (PE) ratio to maintain the protein-to-carbohydrate (PC) ratio constant and that fibroblast growth factor 21 (FGF21) is involved in this response. METHODS Adult male Wistar rats were used in 3 experiments. The first was to determine whether the PE ratio was influenced by changes in carbohydrate content. The second was to test whether the PE ratio was defended with a modified DSS model. The third was to determine whether the selected PE ratio was of metabolic interest compared with a standard 15% protein diet. Food intake, body weight, and energy expenditure were measured. After 3 wk, plasma was sampled and rats were killed to determine body composition and gene expression. Statistical analyses were mainly done by ANOVA tests and correlation tests. RESULTS The selected PE ratio increased from 20% to 35% when the carbohydrate content of the protein-free diet increased from 30% to 75% (R2 = 0.56; P < 10-6). Consequently, the PC ratio was constant (70%) in all groups (P = 0.18). In self-selecting rats, plasma FGF21 concentrations were 3 times lower than in rats fed the 5% protein diet (P < 10-4) and similar to those in rats fed a 30% diet. CONCLUSIONS This study showed that self-selecting rats established PE ratios larger than those considered sufficient to achieve optimal growth in adult rats (10-15%), and the ratios were highly dependent on carbohydrates, apparently with the aim of maintaining a constant and high PC ratio. This was associated with a minimization of plasma FGF21.
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Affiliation(s)
- Josephine Gehring
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, Paris, France
| | | | | | - Julien Piedcoq
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, Paris, France
| | - Claire Gaudichon
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, Paris, France
| | - Patrick C Even
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, Paris, France
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Impact of Dietary Crude Protein Level on Hepatic Lipid Metabolism in Weaned Female Piglets. Animals (Basel) 2021; 11:ani11061829. [PMID: 34207398 PMCID: PMC8235084 DOI: 10.3390/ani11061829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 05/30/2021] [Accepted: 06/04/2021] [Indexed: 12/02/2022] Open
Abstract
Simple Summary It has been reported that a high crude protein diet could reverse the diet-induced lipid accumulation in the liver of mice and rodents. However, in vivo data supporting a functional role of a high crude protein diet on hepatic lipid metabolism-associated genes and proteins in weaned piglets is not available. In the present study, we aimed to provide a mechanistic insight into alterations in the hepatic lipid lipogenesis, lipolysis, oxidation, and gluconeogenesis in response to different dietary crude protein levels. Our results demonstrated that dietary crude protein could regulate hepatic lipid metabolism through regulating hepatic lipid lipogenesis, lipolysis, oxidation, and gluconeogenesis. The result indicated an important role of dietary crude protein in regulating hepatic lipid metabolism in weaned piglets. Abstract Amino acids serve not only as building blocks for proteins, but also as substrates for the synthesis of low-molecular-weight substances involved in hepatic lipid metabolism. In the present study, eighteen weaned female piglets at 35 days of age were fed a corn- and soybean meal-based diet containing 20%, 17%, or 14% crude protein (CP), respectively. We found that 17% or 20% CP administration reduced the triglyceride and cholesterol concentrations, while enhanced high-density lipoprotein cholesterol (HDL-C) concentration in serum. Western blot analysis showed that piglets in the 20% CP group had higher protein abundance of hormone-sensitive triglyceride lipase (HSL) and peroxisome proliferator-activated receptor-γ coactivator 1α (PGC-1α), as compared with other groups. Moreover, the mRNA expression of sterol regulatory element binding transcription factor 1 (SREBPF1), fatty acid synthase (FASN), and stearoyl-CoA desaturase (SCD) were lower in the 17% or 20% CP group, compared with those of the piglets administered with 14% CP. Of note, the mRNA level of acetyl-CoA carboxylase alpha (ACACα) was lower in the 17% CP group, compared with other groups. Additionally, the mRNA level of lipoprotein lipase (LPL), peroxisome proliferator-activated receptor alpha α (PPARα), glucose-6-phosphatase catalytic subunit (G6PC), and phosphoenolpyruvate carboxykinase 1 (PKC1) in the liver of piglets in the 20% CP group were higher than those of the 14% CP group. Collectively, our results demonstrated that dietary CP could regulate hepatic lipid metabolism through altering hepatic lipid lipogenesis, lipolysis, oxidation, and gluconeogenesis.
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Xu C, Markova M, Seebeck N, Loft A, Hornemann S, Gantert T, Kabisch S, Herz K, Loske J, Ost M, Coleman V, Klauschen F, Rosenthal A, Lange V, Machann J, Klaus S, Grune T, Herzig S, Pivovarova-Ramich O, Pfeiffer AFH. High-protein diet more effectively reduces hepatic fat than low-protein diet despite lower autophagy and FGF21 levels. Liver Int 2020; 40:2982-2997. [PMID: 32652799 DOI: 10.1111/liv.14596] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 06/12/2020] [Accepted: 07/01/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS Non-alcoholic fatty liver disease (NAFLD) is becoming increasingly prevalent and nutrition intervention remains the most important therapeutic approach for NAFLD. Our aim was to investigate whether low- (LP) or high-protein (HP) diets are more effective in reducing liver fat and reversing NAFLD and which mechanisms are involved. METHODS 19 participants with morbid obesity undergoing bariatric surgery were randomized into two hypocaloric (1500-1600 kcal/day) diet groups, a low protein (10E% protein) and a high protein (30E% protein), for three weeks prior to surgery. Intrahepatic lipid levels (IHL) and serum fibroblast growth factor 21 (FGF21) were measured before and after the dietary intervention. Autophagy flux, histology, mitochondrial activity and gene expression analyses were performed in liver samples collected during surgery. RESULTS IHL levels decreased by 42.6% in the HP group, but were not significantly changed in the LP group despite similar weight loss. Hepatic autophagy flux and serum FGF21 increased by 66.7% and 42.2%, respectively, after 3 weeks in the LP group only. Expression levels of fat uptake and lipid biosynthesis genes were lower in the HP group compared with those in the LP group. RNA-seq analysis revealed lower activity of inflammatory pathways upon HP diet. Hepatic mitochondrial activity and expression of β-oxidation genes did not increase in the HP group. CONCLUSIONS HP diet more effectively reduces hepatic fat than LP diet despite of lower autophagy and FGF21. Our data suggest that liver fat reduction upon HP diets result primarily from suppression of fat uptake and lipid biosynthesis.
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Affiliation(s)
- Chenchen Xu
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany.,German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany.,Department of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Mariya Markova
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany.,German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
| | - Nicole Seebeck
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany.,German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany.,Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Anne Loft
- German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany.,Department for Internal Medicine I and Clinical Chemistry, Institute for Diabetes and Cancer (IDC), Helmholtz Center Munich, Neuherberg and Joint Heidelberg-IDC Translational Diabetes Program, Heidelberg University Hospital, Heidelberg, Germany
| | - Silke Hornemann
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany.,German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
| | - Thomas Gantert
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany.,German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany.,Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Stefan Kabisch
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany.,German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany.,Department of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Kathleen Herz
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany.,German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany
| | - Jennifer Loske
- Research Group Molecular Nutritional Medicine, Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Mario Ost
- Department of Physiology of Energy Metabolism, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany
| | - Verena Coleman
- Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany.,Department of Physiology of Energy Metabolism, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany
| | - Frederick Klauschen
- Institute of Pathology, Charité-Universitätsmedizin Berlin, Berlin, Germany.,German Cancer Consortium (DKTK), Partner Site Berlin, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | | | - Volker Lange
- Centre for Obesity and Metabolic Surgery, Vivantes Hospital, Berlin, Germany.,Helios Klinikum Berlin-Buch, Berlin, Germany
| | - Jürgen Machann
- German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany.,Institute of Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich, The University of Tübingen, Tübingen, Germany.,Section on Experimental Radiology, Department of Diagnostic and Interventional Radiology, University Hospital Tübingen, Tübingen, Germany
| | - Susanne Klaus
- Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany.,Department of Physiology of Energy Metabolism, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany
| | - Tilman Grune
- German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany.,Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany.,NutriAct-Competence Cluster Nutrition Research Berlin-Potsdam, Nuthetal, Germany.,Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), Nuthetal, Germany.,German Center for Cardiovascular Research (DZHK), Berlin, Germany
| | - Stephan Herzig
- German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany.,Department for Internal Medicine I and Clinical Chemistry, Institute for Diabetes and Cancer (IDC), Helmholtz Center Munich, Neuherberg and Joint Heidelberg-IDC Translational Diabetes Program, Heidelberg University Hospital, Heidelberg, Germany
| | - Olga Pivovarova-Ramich
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany.,German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany.,Department of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Research Group Molecular Nutritional Medicine, Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - Andreas F H Pfeiffer
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbrücke (DIfE), Nuthetal, Germany.,German Center for Diabetes Research (DZD), Munich-Neuherberg, Germany.,Department of Endocrinology, Diabetes and Nutrition, Charité-Universitätsmedizin Berlin, Berlin, Germany
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Gonzalez-Soto M, Mutch DM. Diet Regulation of Long-Chain PUFA Synthesis: Role of Macronutrients, Micronutrients, and Polyphenols on Δ-5/Δ-6 Desaturases and Elongases 2/5. Adv Nutr 2020; 12:980-994. [PMID: 33186986 PMCID: PMC8166571 DOI: 10.1093/advances/nmaa142] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/04/2020] [Accepted: 10/01/2020] [Indexed: 01/08/2023] Open
Abstract
Deficiencies in the n-3 (ω-3) long-chain PUFAs (LC-PUFAs) EPA and DHA are associated with increased risk for the development of numerous diseases. Although n-3 LC-PUFAs can be obtained by consuming marine products, they are also synthesized endogenously through a biochemical pathway regulated by the Δ-5/Δ-6 desaturase and elongase 2/5 enzymes. This narrative review collates evidence from the past 40 y demonstrating that mRNA expression and activity of desaturase and elongase enzymes are influenced by numerous dietary components, including macronutrients, micronutrients, and polyphenols. Specifically, we highlight that both the quantity and the composition of dietary fats, carbohydrates, and proteins can differentially regulate desaturase pathway activity. Furthermore, desaturase and elongase mRNA levels and enzyme activities are also influenced by micronutrients (folate, vitamin B-12, vitamin A), trace minerals (iron, zinc), and polyphenols (resveratrol, isoflavones). Understanding how these various dietary components influence LC-PUFA synthesis will help further advance our understanding of how dietary patterns, ranging from caloric excesses to micronutrient deficiencies, influence disease risks.
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Affiliation(s)
- Melissa Gonzalez-Soto
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Canada
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Moore MP, Cunningham RP, Dashek RJ, Mucinski JM, Rector RS. A Fad too Far? Dietary Strategies for the Prevention and Treatment of NAFLD. Obesity (Silver Spring) 2020; 28:1843-1852. [PMID: 32893456 PMCID: PMC7511422 DOI: 10.1002/oby.22964] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 06/04/2020] [Accepted: 06/06/2020] [Indexed: 12/13/2022]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a major health problem, and its prevalence has increased in recent years, concurrent with rising rates of obesity and other metabolic diseases. Currently, there are no FDA-approved pharmacological therapies for NAFLD, and lifestyle interventions, including weight loss and exercise, remain the cornerstones for treatment. Manipulating diet composition and eating patterns may be a sustainable approach to NAFLD treatment. Dietary strategies including Paleolithic, ketogenic, Mediterranean, high-protein, plant-based, low-carbohydrate, and intermittent fasting diets have become increasingly popular because of their purported benefits on metabolic disease. This review highlights what is currently known about these popular dietary approaches in the management of NAFLD in clinical populations with mechanistic insight from animal studies. It also identifies key knowledge gaps to better inform future preclinical and clinical studies aimed at the treatment of NAFLD.
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Affiliation(s)
- Mary P. Moore
- Research Service, Harry S Truman Memorial Veterans Medical Center, Columbia, MO, 65211
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211
| | - Rory P. Cunningham
- Research Service, Harry S Truman Memorial Veterans Medical Center, Columbia, MO, 65211
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211
| | - Ryan J. Dashek
- Research Service, Harry S Truman Memorial Veterans Medical Center, Columbia, MO, 65211
- Comparative Medicine Program, University of Missouri, Columbia, MO 65211
| | - Justine M. Mucinski
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211
| | - R. Scott Rector
- Research Service, Harry S Truman Memorial Veterans Medical Center, Columbia, MO, 65211
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211
- Medicine-Division of Gastroenterology and Hepatology, University of Missouri, Columbia, MO 65211
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10
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Drummen M, Tischmann L, Gatta-Cherifi B, Fogelholm M, Raben A, Adam TC, Westerterp-Plantenga MS. High Compared with Moderate Protein Intake Reduces Adaptive Thermogenesis and Induces a Negative Energy Balance during Long-term Weight-Loss Maintenance in Participants with Prediabetes in the Postobese State: A PREVIEW Study. J Nutr 2020; 150:458-463. [PMID: 31754687 PMCID: PMC7056617 DOI: 10.1093/jn/nxz281] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 09/04/2019] [Accepted: 10/21/2019] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Weight loss has been associated with adaptations in energy expenditure. Identifying factors that counteract these adaptations are important for long-term weight loss and weight maintenance. OBJECTIVE The aim of this study was to investigate whether increased protein/carbohydrate ratio would reduce adaptive thermogenesis (AT) and the expected positive energy balance (EB) during weight maintenance after weight loss in participants with prediabetes in the postobese state. METHODS In 38 participants, the effects of 2 diets differing in protein/carbohydrate ratio on energy expenditure and respiratory quotient (RQ) were assessed during 48-h respiration chamber measurements ∼34 mo after weight loss. Participants consumed a high-protein (HP) diet (n = 20; 13 women/7 men; age: 64.0 ± 6.2 y; BMI: 28.9 ± 4.0 kg/m 2) with 25:45:30% or a moderate-protein (MP) diet (n = 18; 9 women/9 men; age: 65.1 ± 5.8 y; BMI: 29.0 ± 3.8 kg/m 2) with 15:55:30% of energy from protein:carbohydrate:fat. Predicted resting energy expenditure (REEp) was calculated based on fat-free mass and fat mass. AT was assessed by subtracting measured resting energy expenditure (REE) from REEp. The main outcomes included differences in components of energy expenditure, substrate oxidation, and AT between groups. RESULTS EB (MP = 0.2 ± 0.9 MJ/d; HP = -0.5 ± 0.9 MJ/d) and RQ (MP = 0.84 ± 0.02; HP = 0.82 ± 0.02) were reduced and REE (MP: 7.3 ± 0.2 MJ/d compared with HP: 7.8 ± 0.2 MJ/d) was increased in the HP group compared with the MP group (P < 0.05). REE was not different from REEp in the HP group, whereas REE was lower than REEp in the MP group (P < 0.05). Furthermore, EB was positively related to AT (rs = 0.74; P < 0.001) and RQ (rs = 0.47; P < 0.01) in the whole group of participants. CONCLUSIONS In conclusion, an HP diet compared with an MP diet led to a negative EB and counteracted AT ∼34 mo after weight loss, in participants with prediabetes in the postobese state. These results indicate the relevance of compliance to an increased protein/carbohydrate ratio for long-term weight maintenance after weight loss. The trial was registered at clinicaltrials.gov as NCT01777893.
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Affiliation(s)
- Mathijs Drummen
- Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht UMC+, Maastricht University, Maastricht, Netherlands,Address correspondence to MD (e-mail: )
| | - Lea Tischmann
- Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht UMC+, Maastricht University, Maastricht, Netherlands
| | - Blandine Gatta-Cherifi
- Department of Endocrinology, Diabetology and Nutrition, Universite de Bordeaux, Bordeaux, France
| | - Mikael Fogelholm
- Department of Food and Nutrition Sciences, University of Helsinki, Helsinki, Finland
| | - Anne Raben
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Tanja C Adam
- Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht UMC+, Maastricht University, Maastricht, Netherlands
| | - Margriet S Westerterp-Plantenga
- Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht UMC+, Maastricht University, Maastricht, Netherlands
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11
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Desclée de Maredsous C, Carlin G, Oosting A, Delteil C, Azzout-Marniche D, Chaumontet C, Blachier F, Barbillon P, Mary-Huard T, Tomé D, Oozeer R, Davila AM. Increased Susceptibility to Obesity and Glucose Intolerance in Adult Female Rats Programmed by High-Protein Diet during Gestation, But Not during Lactation. Nutrients 2020; 12:E315. [PMID: 31991777 PMCID: PMC7071251 DOI: 10.3390/nu12020315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/16/2020] [Accepted: 01/21/2020] [Indexed: 02/06/2023] Open
Abstract
Fetal and early postnatal nutritional environments contribute to lifelong health. High-protein (HP) intake in early life can increase obesity risk in response to specific feeding conditions after weaning. This study investigated the effects of a maternal HP diet during pregnancy and/or lactation on the metabolic health of offspring. Three groups of dams received a normal-protein (NP, 20E% proteins) diet during gestation and lactation (Control group), an HP diet (55E% proteins) during gestation (HPgest group), or an HP diet during lactation (HPlact group). From weaning until 10 weeks, female pups were exposed to the NP, the HP or the western (W) diet. HPgest pups had more adipocytes (p = 0.009), more subcutaneous adipose tissue (p = 0.04) and increased expression of genes involved in liver fatty acid synthesis at 10 weeks (p < 0.05). HPgest rats also showed higher food intake and adiposity under the W diet compared to the Control and HPlact rats (p ≤ 0.04). The post-weaning HP diet reduced weight (p < 0.0001), food intake (p < 0.0001), adiposity (p < 0.0001) and glucose tolerance (p < 0.0001) compared to the NP and W diets; this effect was enhanced in the HPgest group (p = 0.04). These results show that a maternal HP diet during gestation, but not lactation, leads to a higher susceptibility to obesity and glucose intolerance in female offspring.
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Affiliation(s)
- Caroline Desclée de Maredsous
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, 75005 Paris, France; (C.D.d.M.); (G.C.); (C.D.); (D.A.-M.); (C.C.); (F.B.); (D.T.)
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (A.O.); (R.O.)
| | - Gabrielle Carlin
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, 75005 Paris, France; (C.D.d.M.); (G.C.); (C.D.); (D.A.-M.); (C.C.); (F.B.); (D.T.)
| | - Annemarie Oosting
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (A.O.); (R.O.)
| | - Corine Delteil
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, 75005 Paris, France; (C.D.d.M.); (G.C.); (C.D.); (D.A.-M.); (C.C.); (F.B.); (D.T.)
| | - Dalila Azzout-Marniche
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, 75005 Paris, France; (C.D.d.M.); (G.C.); (C.D.); (D.A.-M.); (C.C.); (F.B.); (D.T.)
| | - Catherine Chaumontet
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, 75005 Paris, France; (C.D.d.M.); (G.C.); (C.D.); (D.A.-M.); (C.C.); (F.B.); (D.T.)
| | - François Blachier
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, 75005 Paris, France; (C.D.d.M.); (G.C.); (C.D.); (D.A.-M.); (C.C.); (F.B.); (D.T.)
| | - Pierre Barbillon
- Université Paris-Saclay, AgroParisTech, INRAE, UMR MIA-Paris, 75005 Paris, France; (P.B.); (T.M.-H.)
| | - Tristan Mary-Huard
- Université Paris-Saclay, AgroParisTech, INRAE, UMR MIA-Paris, 75005 Paris, France; (P.B.); (T.M.-H.)
| | - Daniel Tomé
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, 75005 Paris, France; (C.D.d.M.); (G.C.); (C.D.); (D.A.-M.); (C.C.); (F.B.); (D.T.)
| | - Raish Oozeer
- Danone Nutricia Research, 3584 CT Utrecht, The Netherlands; (A.O.); (R.O.)
| | - Anne-Marie Davila
- Université Paris-Saclay, AgroParisTech, INRAE, UMR PNCA, 75005 Paris, France; (C.D.d.M.); (G.C.); (C.D.); (D.A.-M.); (C.C.); (F.B.); (D.T.)
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12
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Ezquerro S, Rodríguez A, Portincasa P, Frühbeck G. Effects of Diets on Adipose Tissue. Curr Med Chem 2019; 26:3593-3612. [PMID: 28521681 DOI: 10.2174/0929867324666170518102340] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 03/16/2017] [Accepted: 03/16/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Obesity is a major health problem that has become a global epidemic. Overweight and obesity are commonly associated with the development of several pathologies, such as insulin resistance, cardiovascular diseases, sleep apnea and several types of cancer, which can lead to further morbidity and mortality. An increased abdominal adiposity renders overweight and obese individuals more prone to metabolic and cardiovascular problems. OBJECTIVE This Review aims to describe the dietary strategies to deal with excess adiposity given the medical, social and economic consequences of obesity. METHODS One hundred and eighty-five papers were included in the present Review. RESULTS Excess adiposity leads to several changes in the biology, morphology and function of the adipose tissue, such as adipocyte hypertrophy and hyperplasia, adipose tissue inflammation and fibrosis and an impaired secretion of adipokines, contributing to the onset of obesity- related comorbidities. The first approach for obesity management and prevention is the implementation of a diet combined with physical activity. The present review summarizes the compelling evidence showing body composition changes, impact on cardiometabolism and potential adverse effects of very-low calorie, low- and high-carbohydrate, high-protein or low-fat diets. The use of macronutrients during the preprandial and postprandial state has been also reviewed to better understand the metabolic changes induced by different dietary interventions. CONCLUSION Dietary changes should be individualised, tailored to food preferences and allow for flexible approaches to reducing calorie intake in order to increase the motivation and compliance of overweight and obese patients.
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Affiliation(s)
- Silvia Ezquerro
- Metabolic Research Laboratory, Clínica Universidad de Navarra, IdiSNA, Pamplona, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - Amaia Rodríguez
- Metabolic Research Laboratory, Clínica Universidad de Navarra, IdiSNA, Pamplona, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain
| | - Piero Portincasa
- Clinica Medica "A. Murri", Department of Biomedical Sciences and Human Oncology University of Bari Medical School, Policlinico Hospital, Bari, Italy
| | - Gema Frühbeck
- Metabolic Research Laboratory, Clínica Universidad de Navarra, IdiSNA, Pamplona, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, Madrid, Spain.,Department of Endocrinology & Nutrition, Clínica Universidad de Navarra, Pamplona, Spain
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13
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Chalvon-Demersay T, Moro J, Even PC, Chaumontet C, Tomé D, Averous J, Piedcoq J, Gaudichon C, Maurin AC, Fafournoux P, Azzout-Marniche D. Liver GCN2 controls hepatic FGF21 secretion and modulates whole body postprandial oxidation profile under a low-protein diet. Am J Physiol Endocrinol Metab 2019; 317:E1015-E1021. [PMID: 31573843 DOI: 10.1152/ajpendo.00022.2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
General control nonderepressible 2 (GCN2) is a kinase that detects amino acid deficiency and is involved in the control of protein synthesis and energy metabolism. However, the role of hepatic GCN2 in the metabolic adaptations in response to the modulation of dietary protein has been seldom studied. Wild-type (WT) and liver GCN2-deficient (KO) mice were fed either a normo-protein diet, a low-protein diet, or a high-protein diet for 3 wk. During this period, body weight, food intake, and metabolic parameters were followed. In mice fed normo- and high-protein diets, GCN2 pathway in the liver is not activated in WT mice, leading to a similar metabolic profile with the one of KO mice. On the contrary, a low-protein diet activates GCN2 in WT mice, inducing FGF21 secretion. In turn, FGF21 maintains a high level of lipid oxidation, leading to a different postprandial oxidation profile compared with KO mice. Hepatic GCN2 controls FGF21 secretion under a low-protein diet and modulates a whole body postprandial oxidation profile.
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Affiliation(s)
| | - Joanna Moro
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Patrick C Even
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | | | - Daniel Tomé
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Julien Averous
- UMR 1019 Nutrition Humaine, INRA, Université Clermont 1, Centre de Clermont-Ferrand-Theix, Saint Genès Champanelle, France
| | - Julien Piedcoq
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Claire Gaudichon
- UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, Paris, France
| | - Anne-Catherine Maurin
- UMR 1019 Nutrition Humaine, INRA, Université Clermont 1, Centre de Clermont-Ferrand-Theix, Saint Genès Champanelle, France
| | - Pierre Fafournoux
- UMR 1019 Nutrition Humaine, INRA, Université Clermont 1, Centre de Clermont-Ferrand-Theix, Saint Genès Champanelle, France
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14
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Azzout-Marniche D, Chaumontet C, Piedcoq J, Khodorova N, Fromentin G, Tomé D, Gaudichon C, Even PC. High Pancreatic Amylase Expression Promotes Adiposity in Obesity-Prone Carbohydrate-Sensitive Rats. J Nutr 2019; 149:270-279. [PMID: 30753533 DOI: 10.1093/jn/nxy262] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/13/2018] [Accepted: 09/15/2018] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND We have reported large differences in adiposity (fat mass/body weight) gain between rats fed a low-fat, high-starch diet, leading to their classification into carbohydrate "sensitive" and "resistant" rats. In sensitive animals, fat accumulates in visceral adipose tissues, leading to the suggestion that this form of obesity could be responsible for rapid development of metabolic syndrome. OBJECTIVE We investigated whether increased amylase secretion by the pancreas and accelerated starch degradation in the intestine could be responsible for this phenotype. METHOD Thirty-two male Wistar rats (7-wk-old) were fed a purified low-fat (10%), high-carbohydrate diet for 6 wk, in which most of the carbohydrate (64% by energy) was provided as corn starch. Meal tolerance tests of the Starch diet were performed to measure glucose and insulin responses to meal ingestion. Indirect calorimetry combined with use of 13C-labelled dietary starch was used to assess meal-induced changes in whole body and starch-derived glucose oxidation. Real-time polymerase chain reaction was used to assess mRNA expression in pancreas, liver, white and brown adipose tissues, and intestine. Amylase activity was measured in the duodenum, jejunum, and ileum contents. ANOVA and regression analyses were used for statistical comparisons. RESULTS "Resistant" and "sensitive" rats were separated according to adiposity gain during the study (1.73% ± 0.20% compared with 4.35% ± 0.36%). Breath recovery of 13CO2 from 13C-labelled dietary starch was higher in "sensitive" rats, indicating a larger increase in whole body glucose oxidation and, conversely, a larger decrease in lipid oxidation. Amylase mRNA expression in pancreas, and amylase activity in jejunum, were also higher in sensitive rats. CONCLUSION Differences in digestion of starch can promote visceral fat accumulation in rats when fed a low-fat, high-starch diet. This mechanism may have important implications in human obesity.
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Affiliation(s)
- Dalila Azzout-Marniche
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris Saclay, Paris, France
| | - Catherine Chaumontet
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris Saclay, Paris, France
| | - Julien Piedcoq
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris Saclay, Paris, France
| | - Nadezda Khodorova
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris Saclay, Paris, France
| | - Gilles Fromentin
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris Saclay, Paris, France
| | - Daniel Tomé
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris Saclay, Paris, France
| | - Claire Gaudichon
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris Saclay, Paris, France
| | - Patrick C Even
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris Saclay, Paris, France
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15
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Vu JP, Luong L, Parsons WF, Oh S, Sanford D, Gabalski A, Lighton JRB, Pisegna JR, Germano PM. Long-Term Intake of a High-Protein Diet Affects Body Phenotype, Metabolism, and Plasma Hormones in Mice. J Nutr 2017; 147:2243-2251. [PMID: 29070713 PMCID: PMC5697971 DOI: 10.3945/jn.117.257873] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 07/26/2017] [Accepted: 09/26/2017] [Indexed: 01/08/2023] Open
Abstract
Background: High-protein diets (HPDs) recently have been used to obtain body weight and fat mass loss and expand muscle mass. Several studies have documented that HPDs reduce appetite and food intake.Objective: Our goal was to determine the long-term effects of an HPD on body weight, energy intake and expenditure, and metabolic hormones.Methods: Male C57BL/6 mice (8 wk old) were fed either an HPD (60% of energy as protein) or a control diet (CD; 20% of energy as protein) for 12 wk. Body composition and food intakes were determined, and plasma hormone concentrations were measured in mice after being fed and after overnight feed deprivation at several time points.Results: HPD mice had significantly lower body weight (in means ± SEMs; 25.73 ± 1.49 compared with 32.5 ± 1.31 g; P = 0.003) and fat mass (9.55% ± 1.24% compared with 15.78% ± 2.07%; P = 0.05) during the first 6 wk compared with CD mice, and higher lean mass throughout the study starting at week 2 (85.45% ± 2.25% compared with 75.29% ± 1.90%; P = 0.0001). Energy intake, total energy expenditure, and respiratory quotient were significantly lower in HPD compared with CD mice as shown by cumulative energy intake and eating rate. Water vapor was significantly higher in HPD mice during both dark and light phases. In HPD mice, concentrations of leptin [feed-deprived: 41.31 ± 11.60 compared with 3041 ± 683 pg/mL (P = 0.0004); postprandial: 112.5 ± 102.0 compared with 8273 ± 1415 pg/mL (P < 0.0001)] and glucagon-like peptide 1 (GLP-1) [feed-deprived: 5.664 ± 1.44 compared with 21.31 ± 1.26 pg/mL (P = <0.0001); postprandial: 6.54 ± 2.13 compared with 50.62 ± 11.93 pg/mL (P = 0.0037)] were significantly lower, whereas postprandial glucagon concentrations were higher than in CD-fed mice.Conclusions: In male mice, the 12-wk HPD resulted in short-term body weight and fat mass loss, but throughout the study preserved body lean mass and significantly reduced energy intake and expenditure as well as leptin and GLP-1 concentrations while elevating postprandial glucagon concentrations. This study suggests that long-term use of HPDs may be an effective strategy to decrease energy intake and expenditure and to maintain body lean mass.
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Affiliation(s)
- John P Vu
- CURE–Digestive Diseases Research Center, Department of Medicine at the University of California at Los Angeles, Los Angeles, CA;,Division of Gastroenterology, Hepatology, and Parenteral Nutrition, Veterans Affairs (VA) Greater Los Angeles Health Care System and Division of Digestive Diseases, David Geffen School of Medicine, Los Angeles, CA; and
| | - Leon Luong
- CURE–Digestive Diseases Research Center, Department of Medicine at the University of California at Los Angeles, Los Angeles, CA;,Division of Gastroenterology, Hepatology, and Parenteral Nutrition, Veterans Affairs (VA) Greater Los Angeles Health Care System and Division of Digestive Diseases, David Geffen School of Medicine, Los Angeles, CA; and
| | - William F Parsons
- CURE–Digestive Diseases Research Center, Department of Medicine at the University of California at Los Angeles, Los Angeles, CA;,Division of Gastroenterology, Hepatology, and Parenteral Nutrition, Veterans Affairs (VA) Greater Los Angeles Health Care System and Division of Digestive Diseases, David Geffen School of Medicine, Los Angeles, CA; and
| | - Suwan Oh
- CURE–Digestive Diseases Research Center, Department of Medicine at the University of California at Los Angeles, Los Angeles, CA;,Division of Gastroenterology, Hepatology, and Parenteral Nutrition, Veterans Affairs (VA) Greater Los Angeles Health Care System and Division of Digestive Diseases, David Geffen School of Medicine, Los Angeles, CA; and
| | - Daniel Sanford
- CURE–Digestive Diseases Research Center, Department of Medicine at the University of California at Los Angeles, Los Angeles, CA;,Division of Gastroenterology, Hepatology, and Parenteral Nutrition, Veterans Affairs (VA) Greater Los Angeles Health Care System and Division of Digestive Diseases, David Geffen School of Medicine, Los Angeles, CA; and
| | - Arielle Gabalski
- CURE–Digestive Diseases Research Center, Department of Medicine at the University of California at Los Angeles, Los Angeles, CA;,Division of Gastroenterology, Hepatology, and Parenteral Nutrition, Veterans Affairs (VA) Greater Los Angeles Health Care System and Division of Digestive Diseases, David Geffen School of Medicine, Los Angeles, CA; and
| | | | - Joseph R Pisegna
- CURE–Digestive Diseases Research Center, Department of Medicine at the University of California at Los Angeles, Los Angeles, CA;,Division of Gastroenterology, Hepatology, and Parenteral Nutrition, Veterans Affairs (VA) Greater Los Angeles Health Care System and Division of Digestive Diseases, David Geffen School of Medicine, Los Angeles, CA; and
| | - Patrizia M Germano
- CURE-Digestive Diseases Research Center, Department of Medicine at the University of California at Los Angeles, Los Angeles, CA; .,Division of Gastroenterology, Hepatology, and Parenteral Nutrition, Veterans Affairs (VA) Greater Los Angeles Health Care System and Division of Digestive Diseases, David Geffen School of Medicine, Los Angeles, CA; and
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16
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Chalvon-Demersay T, Even PC, Chaumontet C, Piedcoq J, Viollet B, Gaudichon C, Tomé D, Foretz M, Azzout-Marniche D. Modifying the Dietary Carbohydrate-to-Protein Ratio Alters the Postprandial Macronutrient Oxidation Pattern in Liver of AMPK-Deficient Mice. J Nutr 2017; 147:1669-1676. [PMID: 28747486 DOI: 10.3945/jn.117.250803] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 03/28/2017] [Accepted: 06/13/2017] [Indexed: 11/14/2022] Open
Abstract
Background: Hepatic AMP-activated kinase (AMPK) activity is sensitive to the dietary carbohydrate-to-protein ratio. However, the role of AMPK in metabolic adaptations to variations in dietary macronutrients remains poorly understood.Objective: The objective of this study was to determine the role of hepatic AMPK in the adaptation of energy metabolism in response to modulation of the dietary carbohydrate-to-protein ratio.Methods: Male 7-wk-old wild-type (WT) and liver AMPK-deficient (knockout) mice were fed either a normal-protein and normal-carbohydrate diet (NP-NC; 14% protein, 76% carbohydrate on an energy basis), a low-protein and high-carbohydrate diet (LP-HC; 5% protein, 85% carbohydrate), or a high-protein and low-carbohydrate diet (HP-LC; 55% protein, 35% carbohydrate) for 3 wk. During this period, after an overnight fast, metabolic parameters were measured and indirect calorimetry was performed in mice during the first hours after refeeding a 1-g calibrated meal of their own diet in order to investigate lipid and carbohydrate metabolism.Results: Knockout mice fed an LP-HC or HP-LC meal exhibited 24% and 8% lower amplitudes in meal-induced carbohydrate and lipid oxidation changes. By contrast, knockout mice fed an NP-NC meal displayed normal carbohydrate and lipid oxidation profiles. These mice exhibited a transient increase in hepatic triglycerides and a decrease in hepatic glycogen. These changes were associated with a 650% higher secretion of fibroblast growth factor 21 (FGF21) 2 h after refeeding.Conclusions: The consequences of hepatic AMPK deletion depend on the dietary carbohydrate-to-protein ratio. In mice fed the NP-NC diet, deletion of AMPK in the liver led to an adaptation of liver metabolism resulting in increased secretion of FGF21. These changes possibly compensated for the absence of hepatic AMPK, as these mice exhibited normal postprandial changes in carbohydrate and lipid oxidation. By contrast, in mice fed the LP-HC and HP-LC diets, the lack of adjustment in liver metabolism in knockout mice resulted in a metabolic inflexibility, leading to a reduced amplitude of meal-induced changes in carbohydrate and lipid oxidation.
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Affiliation(s)
- Tristan Chalvon-Demersay
- UMR Nutrition Physiology and Ingestive Behavior, AgroParisTech, INRA, Paris-Saclay University, Paris, France
| | - Patrick C Even
- UMR Nutrition Physiology and Ingestive Behavior, AgroParisTech, INRA, Paris-Saclay University, Paris, France
| | - Catherine Chaumontet
- UMR Nutrition Physiology and Ingestive Behavior, AgroParisTech, INRA, Paris-Saclay University, Paris, France
| | - Julien Piedcoq
- UMR Nutrition Physiology and Ingestive Behavior, AgroParisTech, INRA, Paris-Saclay University, Paris, France
| | - Benoit Viollet
- French National Institute of Health and Medical Research, U1016, Cochin Institute, Paris, France.,The National Center for Scientific Research, UMR8104, Paris, France; and.,Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Claire Gaudichon
- UMR Nutrition Physiology and Ingestive Behavior, AgroParisTech, INRA, Paris-Saclay University, Paris, France
| | - Daniel Tomé
- UMR Nutrition Physiology and Ingestive Behavior, AgroParisTech, INRA, Paris-Saclay University, Paris, France;
| | - Marc Foretz
- French National Institute of Health and Medical Research, U1016, Cochin Institute, Paris, France.,The National Center for Scientific Research, UMR8104, Paris, France; and.,Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Dalila Azzout-Marniche
- UMR Nutrition Physiology and Ingestive Behavior, AgroParisTech, INRA, Paris-Saclay University, Paris, France
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17
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Chalvon-Demersay T, Blachier F, Tomé D, Blais A. Animal Models for the Study of the Relationships between Diet and Obesity: A Focus on Dietary Protein and Estrogen Deficiency. Front Nutr 2017; 4:5. [PMID: 28373974 PMCID: PMC5357654 DOI: 10.3389/fnut.2017.00005] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 03/01/2017] [Indexed: 01/26/2023] Open
Abstract
Obesity is an increasing major public health concern asking for dietary strategies to limit weight gain and associated comorbidities. In this review, we present animal models, particularly rats and mice, which have been extensively used by scientists to understand the consequences of diet quality on weight gain and health. Notably, modulation of dietary protein quantity and/or quality has been shown to exert huge effects on body composition homeostasis through the modulation of food intake, energy expenditure, and metabolic pathways. Interestingly, the perinatal window appears to represent a critical period during which the protein intake of the dam can impact the offspring’s weight gain and feeding behavior. Animal models are also widely used to understand the processes and mechanisms that contribute to obesity at different physiological and pathophysiological stages. An interesting example of such aspect is the situation of decreased estrogen level occurring at menopause, which is linked to weight gain and decreased energy expenditure. To study metabolic disorders associated with such situation, estrogen withdrawal in ovariectomized animal models to mimic menopause are frequently used. According to many studies, clear species-specific differences exist between rats and mice that need to be taken into account when results are extrapolated to humans.
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Affiliation(s)
- Tristan Chalvon-Demersay
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay , Paris , France
| | - François Blachier
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay , Paris , France
| | - Daniel Tomé
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay , Paris , France
| | - Anne Blais
- UMR Physiologie de la Nutrition et du Comportement Alimentaire, AgroParisTech, INRA, Université Paris-Saclay , Paris , France
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Stepien M, Azzout-Marniche D, Even PC, Khodorova N, Fromentin G, Tomé D, Gaudichon C. Adaptation to a high-protein diet progressively increases the postprandial accumulation of carbon skeletons from dietary amino acids in rats. Am J Physiol Regul Integr Comp Physiol 2016; 311:R771-R778. [PMID: 27581809 DOI: 10.1152/ajpregu.00040.2016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 07/26/2016] [Indexed: 11/22/2022]
Abstract
We aimed to determine whether oxidative pathways adapt to the overproduction of carbon skeletons resulting from the progressive activation of amino acid (AA) deamination and ureagenesis under a high-protein (HP) diet. Ninety-four male Wistar rats, of which 54 were implanted with a permanent jugular catheter, were fed a normal protein diet for 1 wk and were then switched to an HP diet for 1, 3, 6, or 14 days. On the experimental day, they were given their meal containing a mixture of 20 U-[15N]-[13C] AA, whose metabolic fate was followed for 4 h. Gastric emptying tended to be slower during the first 3 days of adaptation. 15N excretion in urine increased progressively during the first 6 days, reaching 29% of ingested protein. 13CO2 excretion was maximal, as early as the first day, and represented only 16% of the ingested proteins. Consequently, the amount of carbon skeletons remaining in the metabolic pools 4 h after the meal ingestion progressively increased to 42% of the deaminated dietary AA after 6 days of HP diet. In contrast, 13C enrichment of plasma glucose tended to increase from 1 to 14 days of the HP diet. We conclude that there is no oxidative adaptation in the early postprandial period to an excess of carbon skeletons resulting from AA deamination in HP diets. This leads to an increase in the postprandial accumulation of carbon skeletons throughout the adaptation to an HP diet, which can contribute to the sustainable satiating effect of this diet.
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Affiliation(s)
- Magdalena Stepien
- UMR Physiologie de la Nutrition du Comportement Alimentaire, AgroParisTech, Institut National de la Recherche Agronomique, Université Paris Saclay, Paris, France
| | - Dalila Azzout-Marniche
- UMR Physiologie de la Nutrition du Comportement Alimentaire, AgroParisTech, Institut National de la Recherche Agronomique, Université Paris Saclay, Paris, France
| | - Patrick C Even
- UMR Physiologie de la Nutrition du Comportement Alimentaire, AgroParisTech, Institut National de la Recherche Agronomique, Université Paris Saclay, Paris, France
| | - Nadezda Khodorova
- UMR Physiologie de la Nutrition du Comportement Alimentaire, AgroParisTech, Institut National de la Recherche Agronomique, Université Paris Saclay, Paris, France
| | - Gilles Fromentin
- UMR Physiologie de la Nutrition du Comportement Alimentaire, AgroParisTech, Institut National de la Recherche Agronomique, Université Paris Saclay, Paris, France
| | - Daniel Tomé
- UMR Physiologie de la Nutrition du Comportement Alimentaire, AgroParisTech, Institut National de la Recherche Agronomique, Université Paris Saclay, Paris, France
| | - Claire Gaudichon
- UMR Physiologie de la Nutrition du Comportement Alimentaire, AgroParisTech, Institut National de la Recherche Agronomique, Université Paris Saclay, Paris, France
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19
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Jegatheesan P, Beutheu S, Ventura G, Sarfati G, Nubret E, Kapel N, Waligora-Dupriet AJ, Bergheim I, Cynober L, De-Bandt JP. Effect of specific amino acids on hepatic lipid metabolism in fructose-induced non-alcoholic fatty liver disease. Clin Nutr 2016; 35:175-182. [DOI: 10.1016/j.clnu.2015.01.021] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 12/29/2014] [Accepted: 01/29/2015] [Indexed: 02/07/2023]
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20
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Desclée de Maredsous C, Oozeer R, Barbillon P, Mary-Huard T, Delteil C, Blachier F, Tomé D, van der Beek EM, Davila AM. High-Protein Exposure during Gestation or Lactation or after Weaning Has a Period-Specific Signature on Rat Pup Weight, Adiposity, Food Intake, and Glucose Homeostasis up to 6 Weeks of Age. J Nutr 2016; 146:21-9. [PMID: 26674762 DOI: 10.3945/jn.115.216465] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 10/26/2015] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Early-life nutrition has a programming effect on later metabolic health; however, the impact of exposure to a high-protein (HP) diet is still being investigated. OBJECTIVE This study evaluated the consequences on pup phenotype of an HP diet during gestation and lactation and after weaning. METHODS Wistar rat dams were separated into 2 groups fed an HP (55% protein) or normal protein (NP) (control; 20% protein) isocaloric diet during gestation, and each group subsequently was separated into 2 subgroups that were fed an HP or NP diet during lactation. After weaning, male and female pups from each mother subgroup were separated into 2 groups that were fed either an NP or HP diet until they were 6 wk old. Measurements included weight, food intake, body composition, blood glucose, insulin, glucagon, leptin, insulin-like growth factor I, and lipids. RESULTS Feeding mothers the HP diet during gestation or lactation induced lower postweaning pup weight (gestation diet × time, P < 0.0001; lactation diet × time, P < 0.0001). Regardless of dams' diets, pups receiving HP compared with NP diet after weaning had 7% lower weight (NP, 135.0 ± 2.6 g; HP, 124.4 ± 2.5 g; P < 0.0001), 16% lower total energy intake (NP, 777 ± 14 kcal; HP, 649 ± 13 kcal; P < 0.0001) and 31% lower adiposity (P < 0.0001). Pups receiving HP compared with NP diet after weaning had increased blood glucose, insulin, and glucagon when food deprived (P < 0.0001 for all). The HP compared with the NP diet during gestation induced higher blood glucose in food-deprived rats (NP, 83.2 ± 2.1 mg/dL; HP, 91.2 ± 2.1 mg/dL; P = 0.046) and increased plasma insulin in fed pups receiving the postweaning NP diet (gestation diet × postweaning diet, P = 0.02). CONCLUSION Increasing the protein concentration of the rat dams' diet during gestation, and to a lesser extent during lactation, and of the pups' diet after weaning influenced pup phenotype, including body weight, fat accumulation, food intake, and glucose tolerance at 6 wk of age.
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Affiliation(s)
- Caroline Desclée de Maredsous
- UMR 914 Nutrition Physiology and Ingestive Behavior, French National Institute for Agricultural Research (INRA)/AgroParisTech, Paris Saclay University, Paris, France; Danone Nutricia Research, Utrecht, Netherlands
| | | | - Pierre Barbillon
- UMR 518 Applied Mathematics and Informatics (MIA), French National Institute for Agricultural Research (INRA)/AgroParisTech, Paris Saclay University, Paris, France; and
| | - Tristan Mary-Huard
- UMR 518 Applied Mathematics and Informatics (MIA), French National Institute for Agricultural Research (INRA)/AgroParisTech, Paris Saclay University, Paris, France; and Quantitative Genetics Evolution Le Moulon, French National Institute for Agricultural Research (INRA), Paris-Sud University, Paris Saclay University, AgroParisTech, CNRS, Gif-sur-Yvette, France
| | - Corine Delteil
- UMR 914 Nutrition Physiology and Ingestive Behavior, French National Institute for Agricultural Research (INRA)/AgroParisTech, Paris Saclay University, Paris, France
| | - François Blachier
- UMR 914 Nutrition Physiology and Ingestive Behavior, French National Institute for Agricultural Research (INRA)/AgroParisTech, Paris Saclay University, Paris, France
| | - Daniel Tomé
- UMR 914 Nutrition Physiology and Ingestive Behavior, French National Institute for Agricultural Research (INRA)/AgroParisTech, Paris Saclay University, Paris, France
| | | | - Anne-Marie Davila
- UMR 914 Nutrition Physiology and Ingestive Behavior, French National Institute for Agricultural Research (INRA)/AgroParisTech, Paris Saclay University, Paris, France;
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Jegatheesan P, Beutheu S, Ventura G, Nubret E, Sarfati G, Bergheim I, De Bandt JP. Citrulline and Nonessential Amino Acids Prevent Fructose-Induced Nonalcoholic Fatty Liver Disease in Rats. J Nutr 2015; 145:2273-9. [PMID: 26246323 DOI: 10.3945/jn.115.218982] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Accepted: 07/14/2015] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Fructose induces nonalcoholic fatty liver disease (NAFLD). Citrulline (Cit) may exert a beneficial effect on steatosis. OBJECTIVE We compared the effects of Cit and an isonitrogenous mixture of nonessential amino acids (NEAAs) on fructose-induced NAFLD. METHODS Twenty-two male Sprague Dawley rats were randomly assigned into 4 groups (n = 4-6) to receive for 8 wk a 60% fructose diet, either alone or supplemented with Cit (1 g · kg(-1) · d(-1)), or an isonitrogenous amount of NEAAs, or the same NEAA-supplemented diet with starch and maltodextrin instead of fructose (controls). Nutritional and metabolic status, liver function, and expression of genes of hepatic lipid metabolism were determined. RESULTS Compared with controls, fructose led to NAFLD with significantly higher visceral fat mass (128%), lower lean body mass (-7%), insulin resistance (135%), increased plasma triglycerides (TGs; 67%), and altered plasma amino acid concentrations with decreased Arg bioavailability (-27%). This was corrected by both NEAA and Cit supplementation. Fructose caused a 2-fold increase in the gene expression of fatty acid synthase (Fas) and 70% and 90% decreases in that of carnitine palmitoyl-transferase 1a and microsomal TG transfer protein via a nearly 10-fold higher gene expression of sterol regulatory element-binding protein-1c (Srebp1c) and carbohydrate-responsive element-binding protein (Chrebp), and a 90% lower gene expression of peroxisome proliferator-activated receptor α (Ppara). NEAA or Cit supplementation led to a Ppara gene expression similar to controls and decreased those of Srebp1c and Chrebp in the liver by 50-60%. Only Cit led to Fas gene expression and Arg bioavailability similar to controls. CONCLUSION In our rat model, Cit and NEAAs effectively prevented fructose-induced NAFLD. On the basis of literature data and our findings, we propose that NEAAs may exert their effects specifically on the liver, whereas Cit presumably acts at both the hepatic and whole-body level, in part via improved peripheral Arg metabolism.
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Affiliation(s)
- Prasanthi Jegatheesan
- Nutrition Biology Laboratory, Faculty of Pharmacy, Paris Descartes University, Paris, France
| | - Stéphanie Beutheu
- Nutrition Biology Laboratory, Faculty of Pharmacy, Paris Descartes University, Paris, France
| | - Gabrielle Ventura
- Nutrition Biology Laboratory, Faculty of Pharmacy, Paris Descartes University, Paris, France
| | - Esther Nubret
- Nutrition Biology Laboratory, Faculty of Pharmacy, Paris Descartes University, Paris, France
| | - Gilles Sarfati
- Clinical Chemistry Department, Paris Center University Hospitals, Public Assistance Hospitals of Paris, Paris, France; and
| | - Ina Bergheim
- Institut of Nutrition, SD Model Systems of Molecular Nutrition, Friedrich-Schiller University Jena, Jena, Germany
| | - Jean-Pascal De Bandt
- Nutrition Biology Laboratory, Faculty of Pharmacy, Paris Descartes University, Paris, France; Clinical Chemistry Department, Paris Center University Hospitals, Public Assistance Hospitals of Paris, Paris, France; and
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High dietary protein decreases fat deposition induced by high-fat and high-sucrose diet in rats. Br J Nutr 2015; 114:1132-42. [PMID: 26285832 DOI: 10.1017/s000711451500238x] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
High-protein diets are known to reduce adiposity in the context of high carbohydrate and Western diets. However, few studies have investigated the specific high-protein effect on lipogenesis induced by a high-sucrose (HS) diet or fat deposition induced by high-fat feeding. We aimed to determine the effects of high protein intake on the development of fat deposition and partitioning in response to high-fat and/or HS feeding. A total of thirty adult male Wistar rats were assigned to one of the six dietary regimens with low and high protein, sucrose and fat contents for 5 weeks. Body weight (BW) and food intake were measured weekly. Oral glucose tolerance tests and meal tolerance tests were performed after 4th and 5th weeks of the regimen, respectively. At the end of the study, the rats were killed 2 h after ingestion of a calibrated meal. Blood, tissues and organs were collected for analysis of circulating metabolites and hormones, body composition and mRNA expression in the liver and adipose tissues. No changes were observed in cumulative energy intake and BW gain after 5 weeks of dietary treatment. However, high-protein diets reduced by 20 % the adiposity gain induced by HS and high-sucrose high-fat (HS-HF) diets. Gene expression and transcriptomic analysis suggested that high protein intake reduced liver capacity for lipogenesis by reducing mRNA expressions of fatty acid synthase (fasn), acetyl-CoA carboxylase a and b (Acaca and Acacb) and sterol regulatory element binding transcription factor 1c (Srebf-1c). Moreover, ketogenesis, as indicated by plasma β-hydroxybutyrate levels, was higher in HS-HF-fed mice that were also fed high protein levels. Taken together, these results suggest that high-protein diets may reduce adiposity by inhibiting lipogenesis and stimulating ketogenesis in the liver.
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Chaumontet C, Azzout-Marniche D, Blais A, Chalvon-Dermersay T, Nadkarni NA, Piedcoq J, Fromentin G, Tomé D, Even PC. Rats Prone to Obesity Under a High-Carbohydrate Diet have Increased Post-Meal CCK mRNA Expression and Characteristics of Rats Fed a High-Glycemic Index Diet. Front Nutr 2015. [PMID: 26217667 PMCID: PMC4497311 DOI: 10.3389/fnut.2015.00022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
We previously reported that rats prone to obesity exhibit an exaggerated increase in glucose oxidation and an exaggerated decline in lipid oxidation under a low-fat high-carbohydrate (LF/HC) diet. The aim of the present study was to investigate the mechanisms involved in these metabolic dysregulations. After a 1-week adaptation to laboratory conditions, 48 male Wistar rats were fed a LF/HC diet for 3 weeks. During weeks 2 and 3, glucose tolerance tests (GTT), insulin tolerance tests (ITT), and meal tolerance tests (MTT) were performed to evaluate blood glucose, plasma, and insulin. Glucose and lipid oxidation were also assayed during the GTT. At the end of the study, body composition was measured in all the rats, and they were classified as carbohydrate resistant (CR) or carbohydrate sensitive (CS) according to their adiposity. Before sacrifice, 24 of the 48 rats received a calibrated LF/HC meal. Liver, muscle, and intestine tissue samples were taken to measure mRNA expression of key genes involved in glucose, lipid, and protein metabolism. ITT, GTT, and MTT showed that CS rats were neither insulin resistant nor glucose intolerant, but mRNA expression of cholecystokinin (CCK) in the duodenum was higher and that of CPT1, PPARα, and PGC1α in liver were lower than in CR rats. From these results, we make the hypothesis that in CS rats, CCK increased pancreatic secretion, which may favor a quicker absorption of carbohydrates and consequently induces an enhanced inhibition of lipid oxidation in the liver, leading to a progressive accumulation of fat preferentially in visceral deposits. Such a mechanism may explain why CS rats share many characteristics observed in rats fed a high-glycemic index diet.
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Affiliation(s)
- Catherine Chaumontet
- UMR914, CRNH-IdF, INRA, Nutrition Physiology and Ingestive Behavior , Paris , France
| | - Dalila Azzout-Marniche
- UMR914, CRNH-IdF, AgroParisTech, Nutrition Physiology and Ingestive Behavior , Paris , France
| | - Anne Blais
- UMR914, CRNH-IdF, INRA, Nutrition Physiology and Ingestive Behavior , Paris , France
| | | | - Nachiket A Nadkarni
- Chaire Aliment, Nutrition, Comportement Alimentaire (ANCA), AgroParisTech , Paris , France
| | - Julien Piedcoq
- UMR914, CRNH-IdF, INRA, Nutrition Physiology and Ingestive Behavior , Paris , France
| | - Gilles Fromentin
- UMR914, CRNH-IdF, INRA, Nutrition Physiology and Ingestive Behavior , Paris , France
| | - Daniel Tomé
- UMR914, CRNH-IdF, AgroParisTech, Nutrition Physiology and Ingestive Behavior , Paris , France
| | - Patrick C Even
- UMR914, CRNH-IdF, INRA, Nutrition Physiology and Ingestive Behavior , Paris , France
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24
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Metabolomic analysis reveals distinct profiles in the plasma and urine of rats fed a high-protein diet. Amino Acids 2015; 47:1225-38. [DOI: 10.1007/s00726-015-1949-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 02/19/2015] [Indexed: 10/23/2022]
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25
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Contreras AV, Rangel-Escareño C, Torres N, Alemán-Escondrillas G, Ortiz V, Noriega LG, Torre-Villalvazo I, Granados O, Velázquez-Villegas LA, Tobon-Cornejo S, González-Hirschfeld D, Recillas-Targa F, Tejero-Barrera E, Gonzalez FJ, Tovar AR. PPARα via HNF4α regulates the expression of genes encoding hepatic amino acid catabolizing enzymes to maintain metabolic homeostasis. GENES AND NUTRITION 2015; 10:452. [PMID: 25576393 DOI: 10.1007/s12263-014-0452-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 12/16/2014] [Indexed: 11/26/2022]
Abstract
The liver is the main organ involved in the metabolism of amino acids (AA), which are oxidized by amino acid catabolizing enzymes (AACE). Peroxisome proliferator-activated receptor-α (PPARα) stimulates fatty acid β-oxidation, and there is evidence that it can modulate hepatic AA oxidation during the transition of energy fuels. To understand the role and mechanism of PPARα's regulation of AA catabolism, the metabolic and molecular adaptations of Ppara-null mice were studied. The role of PPARα on AA metabolism was examined by in vitro and in vivo studies. In wild-type and Ppara-null mice, fed increasing concentrations of the dietary protein/carbohydrate ratio, we measured metabolic parameters, and livers were analyzed by microarray analysis, histology and Western blot. Functional enrichment analysis, EMSA and gene reporter assays were performed. Ppara-null mice presented increased expression of AACE in liver affecting AA, lipid and carbohydrate metabolism. Ppara-null mice had increased glucagon/insulin ratio (7.2-fold), higher serum urea (73.1 %), lower body protein content (19.7 %) and decreased several serum AA in response to a high-protein/low-carbohydrate diet. A functional network of differentially expressed genes, suggested that changes in the expression of AACE were regulated by an interrelationship between PPARα and HNF4α. Our data indicated that the expression of AACE is down-regulated through PPARα by attenuating HNF4α transcriptional activity as observed in the serine dehydratase gene promoter. PPARα via HNF4α maintains body protein metabolic homeostasis by down-regulating genes involved in amino acid catabolism for preserving body nitrogen.
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Affiliation(s)
- Alejandra V Contreras
- Facultad de Medicina, Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, 04510, Mexico, D.F., Mexico
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26
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A high-protein diet for reducing body fat: mechanisms and possible caveats. Nutr Metab (Lond) 2014; 11:53. [PMID: 25489333 PMCID: PMC4258944 DOI: 10.1186/1743-7075-11-53] [Citation(s) in RCA: 140] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 11/10/2014] [Indexed: 02/08/2023] Open
Abstract
High protein diets are increasingly popularized in lay media as a promising strategy for weight loss by providing the twin benefits of improving satiety and decreasing fat mass. Some of the potential mechanisms that account for weight loss associated with high-protein diets involve increased secretion of satiety hormones (GIP, GLP-1), reduced orexigenic hormone secretion (ghrelin), the increased thermic effect of food and protein-induced alterations in gluconeogenesis to improve glucose homeostasis. There are, however, also possible caveats that have to be considered when choosing to consume a high-protein diet. A high intake of branched-chain amino acids in combination with a western diet might exacerbate the development of metabolic disease. A diet high in protein can also pose a significant acid load to the kidneys. Finally, when energy demand is low, excess protein can be converted to glucose (via gluconeogenesis) or ketone bodies and contribute to a positive energy balance, which is undesirable if weight loss is the goal. In this review, we will therefore explore the mechanisms whereby a high-protein diet may exert beneficial effects on whole body metabolism while we also want to present possible caveats associated with the consumption of a high-protein diet.
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27
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Garcia Caraballo SC, Comhair TM, Houten SM, Dejong CHC, Lamers WH, Koehler SE. High-protein diets prevent steatosis and induce hepatic accumulation of monomethyl branched-chain fatty acids. J Nutr Biochem 2014; 25:1263-74. [PMID: 25287814 DOI: 10.1016/j.jnutbio.2014.07.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Revised: 06/09/2014] [Accepted: 07/03/2014] [Indexed: 12/15/2022]
Abstract
The hallmark of nonalcoholic fatty liver disease is steatosis of unknown etiology. To test how dietary protein decreases steatosis, we fed female C57BL/6 J mice low-fat (8 en%) or high-fat (42 en%) combined with low-protein (11 en%), high-protein (HP; 35 en%) or extra-high-protein (HPX; 58 en%) diets for 3 weeks. The 35 en% protein diets reduced hepatic triglyceride, free fatty acid, cholesterol and phospholipid contents to ~50% of that in 11 en% protein diets. Every additional 10 en% protein reduced hepatic fat content ~1.5 g%. HP diets had no effect on lipogenic or fatty acid-oxidizing genes except Ppargc1α (+30%), increased hepatic PCK1 content 3- to 5-fold, left plasma glucose and hepatic glycogen concentration unchanged, and decreased inflammation and cell stress (decreased Fgf21 and increased Gsta expression). The HP-mediated decrease in steatosis correlated inversely with plasma branched-chain amino-acid (BCAA) concentrations and hepatic content of BCAA-derived monomethyl branched-chain fatty acids (mmBCFAs) 14-methylpentadecanoic (14-MPDA; valine-derived) and, to a lesser extent, 14-methylhexadecanoic acid (isoleucine-derived). Liver lipid content was 1.6- to 1.8-fold higher in females than in males, but the anti-steatotic effect of HP diets was equally strong. The strong up-regulation of PCK1 and literature data showing an increase in phosphoenolpyruvate and a decline in tricarboxylic acid cycle intermediates in liver reveal that an increased efflux of these intermediates from mitochondria represents an important effect of an HP diet. The HP diet-induced increase in 14-MPDA and the dietary response in gene expression were more pronounced in females than males. Our findings are compatible with a facilitating role of valine-derived mmBCFAs in the antisteatotic effect of HP diets.
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Affiliation(s)
- Sonia C Garcia Caraballo
- Department of Anatomy & Embryology, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University, Maastricht, the Netherlands
| | - Tine M Comhair
- Department of Anatomy & Embryology, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University, Maastricht, the Netherlands; Nutrigenomics Consortium, Top Institute of Food and Nutrition, Wageningen, the Netherlands
| | - Sander M Houten
- Laboratory Genetic Metabolic Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Cornelis H C Dejong
- Department of General Surgery, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University, Maastricht, the Netherlands
| | - Wouter H Lamers
- Department of Anatomy & Embryology, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University, Maastricht, the Netherlands; Tytgat Institute for Liver and Gastrointestinal Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands; Nutrigenomics Consortium, Top Institute of Food and Nutrition, Wageningen, the Netherlands
| | - S Eleonore Koehler
- Department of Anatomy & Embryology, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University, Maastricht, the Netherlands.
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Azzout-Marniche D, Chaumontet C, Nadkarni NA, Piedcoq J, Fromentin G, Tomé D, Even PC. Food intake and energy expenditure are increased in high-fat-sensitive but not in high-carbohydrate-sensitive obesity-prone rats. Am J Physiol Regul Integr Comp Physiol 2014; 307:R299-309. [DOI: 10.1152/ajpregu.00065.2014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Obesity-prone (OP) rodents are used as models of human obesity predisposition. The goal of the present study was to identify preexisting defects in energy expenditure components in OP rats. Two studies were performed. In the first one, male Wistar rats ( n = 48) were fed a high-carbohydrate diet (HCD) for 3 wk and then a high-fat diet (HFD) for the next 3 wk. This study showed that adiposity gain under HCD was 2.9-fold larger in carbohydrate-sensitive (CS) than in carbohydrate-resistant (CR) rats, confirming the concept of “carbohydrate-sensitive” rats. Energy expenditure (EE), respiratory quotient (RQ), caloric intake (CI), and locomotor activity measured during HFD identified no differences in EE and RQ between fat-resistant (FR) and fat-sensitive (FS) rats, and indicated that obesity developed in FS rats only as the result of a larger CI not fully compensated by a parallel increase in EE. A specific pattern of spontaneous activity, characterized by reduced activity burst intensity, was identified in FS rats but not in CS ones. This mirrors a previous observation that under HCD, CS but not FS rats, exhibited bursts of activity of reduced intensity. In a second study, rats were fed a HFD for 3 wk, and the components of energy expenditure were examined by indirect calorimetry in 10 FR and 10 FS rats. This study confirmed that a low basal EE, reduced thermic effect of feeding, defective postprandial energy partitioning, or a defective substrate utilization by the working muscle are not involved in the FS phenotype.
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Affiliation(s)
- Dalila Azzout-Marniche
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France (CRNH-IdF), UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France; and
- AgroParisTech, CRNH-IdF, UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - Catherine Chaumontet
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France (CRNH-IdF), UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France; and
- AgroParisTech, CRNH-IdF, UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - Nachiket A. Nadkarni
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France (CRNH-IdF), UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France; and
- AgroParisTech, CRNH-IdF, UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - Julien Piedcoq
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France (CRNH-IdF), UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France; and
- AgroParisTech, CRNH-IdF, UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - Gilles Fromentin
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France (CRNH-IdF), UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France; and
- AgroParisTech, CRNH-IdF, UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - Daniel Tomé
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France (CRNH-IdF), UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France; and
- AgroParisTech, CRNH-IdF, UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France
| | - Patrick C. Even
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France (CRNH-IdF), UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France; and
- AgroParisTech, CRNH-IdF, UMR 914 Nutrition Physiology and Ingestive Behavior, Paris, France
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Abstract
PURPOSE OF REVIEW This review presents the different pathways by which protein and amino acid impact glucose control. The review more particularly discusses the contradictory effects reported in the literature on the involvement of amino acid on glucose production and in insulin secretion and sensitivity. RECENT FINDINGS Some recent findings allow a better understanding of the direct and indirect mechanisms involved in the insulinotropic activity of some amino acids in pancreatic β-cell and in the production of glucose through liver gluconeogenesis that participates to improve the control of glycemia. In contrast, the potential deleterious effects of branched chain amino acid, and particularly leucine, hypothesized in previous publications, have been discussed in some recent publications. SUMMARY These processes are of high clinical relevance since the role of protein and amino acid have been repeatedly discussed to improve insulin secretion in type 2 diabetes patients or in weight management strategy in overweight and obese individuals. In addition, whether blood amino acid could be used as biomarkers for the risk of type 2 diabetes needs to be discussed.
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30
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Abstract
The glucokinase (GK) enzyme (EC 2.7.1.1.) is essential for the use of dietary glucose because it is the first enzyme to phosphorylate glucose in excess in different key tissues such as the pancreas and liver. The objective of the present review is not to fully describe the biochemical characteristics and the genetics of this enzyme but to detail its nutritional regulation in different vertebrates from fish to human. Indeed, the present review will describe the existence of the GK enzyme in different animal species that have naturally different levels of carbohydrate in their diets. Thus, some studies have been performed to analyse the nutritional regulation of the GK enzyme in humans and rodents (having high levels of dietary carbohydrates in their diets), in the chicken (moderate level of carbohydrates in its diet) and rainbow trout (no carbohydrate intake in its diet). All these data illustrate the nutritional importance of the GK enzyme irrespective of feeding habits, even in animals known to poorly use dietary carbohydrates (carnivorous species).
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31
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Petzke KJ, Freudenberg A, Klaus S. Beyond the role of dietary protein and amino acids in the prevention of diet-induced obesity. Int J Mol Sci 2014; 15:1374-91. [PMID: 24447927 PMCID: PMC3907874 DOI: 10.3390/ijms15011374] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 01/09/2014] [Accepted: 01/09/2014] [Indexed: 12/22/2022] Open
Abstract
High-protein diets have been shown to prevent the development of diet-induced obesity and can improve associated metabolic disorders in mice. Dietary leucine supplementation can partially mimic this effect. However, the molecular mechanisms triggering these preventive effects remain to be satisfactorily explained. Here we review studies showing a connection between high protein or total amino nitrogen intake and obligatory water intake. High amino nitrogen intake may possibly lower lipid storage, and prevent insulin resistance. Suggestions are made for further systematical studies to explore the relationship between water consumption, satiety, and energy expenditure. Moreover, these examinations should better distinguish between leucine-specific and unspecific effects. Research in this field can provide important information to justify dietary recommendations and strategies in promoting long-term weight loss and may help to reduce health problems associated with the comorbidities of obesity.
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Affiliation(s)
- Klaus J Petzke
- German Institute of Human Nutrition in Potsdam-Rehbruecke (DIfE), Arthur-Scheunert-Allee 114-116, Nuthetal 14558, Germany.
| | - Anne Freudenberg
- German Institute of Human Nutrition in Potsdam-Rehbruecke (DIfE), Arthur-Scheunert-Allee 114-116, Nuthetal 14558, Germany.
| | - Susanne Klaus
- German Institute of Human Nutrition in Potsdam-Rehbruecke (DIfE), Arthur-Scheunert-Allee 114-116, Nuthetal 14558, Germany.
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32
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Seiliez I, Médale F, Aguirre P, Larquier M, Lanneretonne L, Alami-Durante H, Panserat S, Skiba-Cassy S. Postprandial regulation of growth- and metabolism-related factors in zebrafish. Zebrafish 2013; 10:237-48. [PMID: 23659367 DOI: 10.1089/zeb.2012.0835] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Zebrafish (Danio rerio) have been proposed as a possible model organism for nutritional physiology. However, this potential has not yet been realized and studies on the field remain scarce. In this work, we investigated in this species the effect of a single meal as well as that of an increase in the ratio of dietary carbohydrates/proteins on the postprandial expression of several hepatic and muscle metabolism-related genes and proteins. Fish were fed once either a commercial diet (experiment 1) or one of two experimental diets (experiment 2) containing different protein and carbohydrate levels after 72 h of starvation. Refeeding induced the postprandial expression of genes of glycolysis (GK, HK1) and lipogenesis (FAS, G6PDH, ACCa) and inhibited those of gluconeogenesis (cPEPCK) and beta-oxidation (CPT1b) in the viscera. In the muscle, refeeding increased transcript levels of myogenesis (Myf5, Myogenin), inhibited those of Ub-proteasomal proteolytic system (Atrogin1, Murf1a, Murf1b), and induced the activation of key signaling factors of protein synthesis (Akt, 4EBP1, S6K1, S6). However, diet composition had a low impact on the studied factors. Together, these results highlight some specificity of the zebrafish metabolism and demonstrate the interest and the limits of this species as a model organism for nutritional physiology studies.
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Affiliation(s)
- Iban Seiliez
- Institut National de la Recherche Agronomique , UR1067 Nutrition Métabolisme Aquaculture, St-Pée-sur-Nivelle, France.
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33
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Fromentin C, Tomé D, Nau F, Flet L, Luengo C, Azzout-Marniche D, Sanders P, Fromentin G, Gaudichon C. Dietary proteins contribute little to glucose production, even under optimal gluconeogenic conditions in healthy humans. Diabetes 2013; 62:1435-42. [PMID: 23274906 PMCID: PMC3636601 DOI: 10.2337/db12-1208] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Dietary proteins are believed to participate significantly in maintaining blood glucose levels, but their contribution to endogenous glucose production (EGP) remains unclear. We investigated this question using multiple stable isotopes. After overnight fasting, eight healthy volunteers received an intravenous infusion of [6,6-²H₂]-glucose. Two hours later, they ingested four eggs containing 23 g of intrinsically, uniformly, and doubly [¹⁵N]-[¹³C]-labeled proteins. Gas exchanges, expired CO₂, blood, and urine were collected over the 8 h following egg ingestion. The cumulative amount of dietary amino acids (AAs) deaminated over this 8-h period was 18.1 ± 3.5%, 17.5% of them being oxidized. The EGP remained stable for 6 h but fell thereafter, concomitantly with blood glucose levels. During the 8 h after egg ingestion, 50.4 ± 7.7 g of glucose was produced, but only 3.9 ± 0.7 g originated from dietary AA. Our results show that the total postprandial contribution of dietary AA to EGP was small in humans habituated to a diet medium-rich in proteins, even after an overnight fast and in the absence of carbohydrates from the meal. These findings question the respective roles of dietary proteins and endogenous sources in generating significant amounts of glucose in order to maintain blood glucose levels in healthy subjects.
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Affiliation(s)
- Claire Fromentin
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
- AgroParisTech, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
| | - Daniel Tomé
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
- AgroParisTech, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
| | - Françoise Nau
- Institut National de la Recherche Agronomique-AgroCampus, UMR Science et Technologie du Lait et de L'œuf, Rennes, France
| | - Laurent Flet
- Centre Hospitalier Universitaire de Nantes, Hôpital Hôtel Dieu, Pharmacie, Nantes, France
| | - Catherine Luengo
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
- AgroParisTech, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
| | - Dalila Azzout-Marniche
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
- AgroParisTech, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
| | - Pascal Sanders
- Agence Nationale de Sécurité Sanitaire de L'alimentation, de L'environnement et du Travail, Fougères Laboratory, Fougères, France
| | - Gilles Fromentin
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
- AgroParisTech, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
| | - Claire Gaudichon
- Institut National de la Recherche Agronomique, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
- AgroParisTech, Centre de Recherche en Nutrition Humaine d'Ile-de-France, UMR914 Nutrition Physiology and Ingestive Behaviour, Paris, France
- Corresponding author: Claire Gaudichon,
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34
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A maternal high-protein diet predisposes female offspring to increased fat mass in adulthood whereas a prebiotic fibre diet decreases fat mass in rats. Br J Nutr 2013; 110:1732-41. [DOI: 10.1017/s0007114513000998] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The negative effects of malnourishment in utero have been widely explored; the effects of increased maternal macronutrient intake are not known in relation to high fibre, and have been inconclusive with regard to high protein. In the present study, virgin Wistar dams were fed either a control (C), high-protein (40 %, w/w; HP) or high-prebiotic fibre (21·6 %, w/w; HF) diet throughout pregnancy and lactation. Pups consumed the C diet from 3 to 14·5 weeks of age, and then switched to a high-fat/sucrose diet for 8 weeks. A dual-energy X-ray absorptiometry scan and an oral glucose tolerance test were performed and plasma satiety hormones measured. The final body weight and the percentage of body fat were significantly affected by the interaction between maternal diet and offspring sex: weight and fat mass were higher in the female offspring of the HP v. HF dams. No differences in body weight or fat mass were seen in the male offspring. There was a significant sex effect for fasting and total AUC for ghrelin and fasting GIP, with females having higher levels than males. Liver TAG content and plasma NEFA were lower in the offspring of high-prebiotic fibre dams (HF1) than in those of high-protein dams (HP1) and control dams (C1). Intestinal expression of GLUT2 was decreased in HF1 and HP1 v. C1. The maternal HP and HF diets had lasting effects on body fat and hepatic TAG accumulation in the offspring, particularly in females. Whereas the HP diet predisposes to an obese phenotype, the maternal HF diet appears to reduce the susceptibility to obesity following a high-energy diet challenge in adulthood.
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35
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Smeets AJ, Janssens PLHR, Westerterp-Plantenga MS. Addition of capsaicin and exchange of carbohydrate with protein counteract energy intake restriction effects on fullness and energy expenditure. J Nutr 2013; 143:442-7. [PMID: 23406619 DOI: 10.3945/jn.112.170613] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Energy intake restriction causes a yo-yo effect by decreasing energy expenditure (EE) and decreasing fullness. We investigated the 24-h effect of protein and capsaicin, singly or combined, on fullness and EE during 20% energy intake restriction. The 24 participants (12 male, 12 female; BMI, 25.2 ± 0.4 kg/m(2); age, 27 ± 4 y; body fat, 25.6 ± 5.7%; 3-factor eating questionnaire, F1: 6 ± 2, F2: 4 ± 2, F3: 3 ± 2) underwent eight 36-h sessions in a respiration chamber. The study had a randomized crossover design with 8 randomly sequenced conditions. The participants were fed 100 or 80% of their daily energy requirements. There were 2 control (C) conditions: 100%C and 80%C; 2 conditions with capsaicin (Caps): 100%Caps and 80%Caps; 2 conditions with elevated protein (P): 100%P and 80%P; and 2 conditions with a mixture of protein and capsaicin (PCaps): 100%PCaps and 80%PCaps. Appetite profile, EE, and substrate oxidation were monitored. Compared with 100%C, the 80%C group had expected negative energy-balance effects with respect to total EE, diet-induced thermogenesis, and fullness, whereas the 80%Caps diet counteracted these effects, and the 80%P and 80%PCaps diets exceeded these effects (P < 0.01). In energy balance and negative energy balance, fat balance was more negative in the 80%Caps, P, and PCaps groups than in the 80%C group (P < 0.05) and respiratory quotient values were lower. A negative protein balance was prevented with the 80%P and 80%PCaps diets compared with the 80%C diet. Our results suggest that protein and capsaicin, consumed singly or mixed, counteracted the energy intake restriction effects on fullness and EE. During energy restriction, protein and capsaicin promoted a negative fat balance and protein treatments also prevented a negative protein balance.
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Affiliation(s)
- Astrid J Smeets
- Maastricht University, Department of Human Biology, Nutrition and Toxicology Research Institute Maastricht, Maastricht, The Netherlands
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36
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Theytaz F, Noguchi Y, Egli L, Campos V, Buehler T, Hodson L, Patterson BW, Nishikata N, Kreis R, Mittendorfer B, Fielding B, Boesch C, Tappy L. Effects of supplementation with essential amino acids on intrahepatic lipid concentrations during fructose overfeeding in humans. Am J Clin Nutr 2012; 96:1008-16. [PMID: 23034968 DOI: 10.3945/ajcn.112.035139] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND A high dietary protein intake has been shown to blunt the deposition of intrahepatic lipids in high-fat- and high-carbohydrate-fed rodents and humans. OBJECTIVE The aim of this study was to evaluate the effect of essential amino acid supplementation on the increase in hepatic fat content induced by a high-fructose diet in healthy subjects. DESIGN Nine healthy male volunteers were studied on 3 occasions in a randomized, crossover design after 6 d of dietary intervention. Dietary conditions consisted of a weight-maintenance balanced diet (control) or the same balanced diet supplemented with 3 g fructose · kg(-1) · d(-1) and 6.77 g of a mixture of 5 essential amino acids 3 times/d (leucine, isoleucine, valine, lysine, and threonine) (HFrAA) or with 3 g fructose · kg(-1) · d(-1) and a maltodextrin placebo 3 times/d (HFr); there was a washout period of 4 to 10 wk between each condition. For each condition, the intrahepatocellular lipid (IHCL) concentration, VLDL-triglyceride concentration, and VLDL-[(13)C]palmitate production were measured after oral loading with [(13)C]fructose. RESULTS HFr increased the IHCL content (1.27 ± 0.31 compared with 2.74 ± 0.55 vol %; P < 0.05) and VLDL-triglyceride (0.55 ± 0.06 compared with 1.40 ± 0.15 mmol/L; P < 0.05). HFr also enhanced VLDL-[(13)C]palmitate production. HFrAA significantly decreased IHCL compared with HFr (to 2.30 ± 0.43 vol%; P < 0.05) but did not change VLDL-triglyceride concentrations or VLDL-[(13)C]palmitate production. CONCLUSIONS Supplementation with essential amino acids blunts the fructose-induced increase in IHCL but not hypertriglyceridemia. This is not because of inhibition of VLDL-[(13)C]palmitate production. This trial was registered at www.clinicaltrials.gov as NCT01119989.
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Affiliation(s)
- Fanny Theytaz
- Department of Physiology, University of Lausanne, Lausanne, Switzerland
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37
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Schwarz J, Tomé D, Baars A, Hooiveld GJEJ, Müller M. Dietary protein affects gene expression and prevents lipid accumulation in the liver in mice. PLoS One 2012; 7:e47303. [PMID: 23110065 PMCID: PMC3479095 DOI: 10.1371/journal.pone.0047303] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 09/10/2012] [Indexed: 01/01/2023] Open
Abstract
Background and Aims High protein (HP) diets are suggested to positively modulate obesity and associated increased prevalence of non-alcoholic fatty liver (NAFLD) disease in humans and rodents. The aim of our study was to detect mechanisms by which a HP diet affects hepatic lipid accumulation. Methods To investigate the acute and long term effect of high protein ingestion on hepatic lipid accumulation under both low and high fat (HF) conditions, mice were fed combinations of high (35 energy%) or low (10 energy%) fat and high (50 energy%) or normal (15 energy%) protein diets for 1 or 12 weeks. Effects on body composition, liver fat, VLDL production rate and the hepatic transcriptome were investigated. Results Mice fed the HP diets displayed a lower body weight, developed less adiposity and decreased hepatic lipid accumulation, which could be attributed to a combination of several processes. Next to an increased hepatic VLDL production rate, increased energy utilisation due to enhanced protein catabolic processes, such as transamination, TCA cycle and oxidative phosphorylation was found upon high protein ingestion. Conclusion Feeding a HP diet prevented the development of NAFLD by enhancing lipid secretion into VLDL particles and a less efficient use of ingested calories.
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Affiliation(s)
- Jessica Schwarz
- Nutrition, Metabolism and Genomics Group, Division of Human Nutrition, Wageningen University, Wageningen, The Netherlands.
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38
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Metges CC, Lang IS, Hennig U, Brüssow KP, Kanitz E, Tuchscherer M, Schneider F, Weitzel JM, Steinhoff-Ooster A, Sauerwein H, Bellmann O, Nürnberg G, Rehfeldt C, Otten W. Intrauterine growth retarded progeny of pregnant sows fed high protein:low carbohydrate diet is related to metabolic energy deficit. PLoS One 2012; 7:e31390. [PMID: 22328932 PMCID: PMC3273459 DOI: 10.1371/journal.pone.0031390] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Accepted: 01/06/2012] [Indexed: 11/18/2022] Open
Abstract
High and low protein diets fed to pregnant adolescent sows led to intrauterine growth retardation (IUGR). To explore underlying mechanisms, sow plasma metabolite and hormone concentrations were analyzed during different pregnancy stages and correlated with litter weight (LW) at birth, sow body weight and back fat thickness. Sows were fed diets with low (6.5%, LP), adequate (12.1%, AP), and high (30%, HP) protein levels, made isoenergetic by adjusted carbohydrate content. At -5, 24, 66, and 108 days post coitum (dpc) fasted blood was collected. At 92 dpc, diurnal metabolic profiles were determined. Fasted serum urea and plasma glucagon were higher due to the HP diet. High density lipoprotein cholesterol (HDLC), %HDLC and cortisol were reduced in HP compared with AP sows. Lowest concentrations were observed for serum urea and protein, plasma insulin-like growth factor-I, low density lipoprotein cholesterol, and progesterone in LP compared with AP and HP sows. Fasted plasma glucose, insulin and leptin concentrations were unchanged. Diurnal metabolic profiles showed lower glucose in HP sows whereas non-esterified fatty acids (NEFA) concentrations were higher in HP compared with AP and LP sows. In HP and LP sows, urea concentrations were 300% and 60% of AP sows, respectively. Plasma total cholesterol was higher in LP than in AP and HP sows. In AP sows, LW correlated positively with insulin and insulin/glucose and negatively with glucagon/insulin at 66 dpc, whereas in HP sows LW associated positively with NEFA. In conclusion, IUGR in sows fed high protein:low carbohydrate diet was probably due to glucose and energy deficit whereas in sows with low protein:high carbohydrate diet it was possibly a response to a deficit of indispensable amino acids which impaired lipoprotein metabolism and favored maternal lipid disposal.
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Affiliation(s)
- Cornelia C. Metges
- Research Unit Nutritional Physiology “Oskar Kellner”, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Iris S. Lang
- Research Unit Nutritional Physiology “Oskar Kellner”, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Ulf Hennig
- Research Unit Nutritional Physiology “Oskar Kellner”, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Klaus-Peter Brüssow
- Research Unit Reproductive Biology, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Ellen Kanitz
- Research Unit Behavioural Physiology, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Margret Tuchscherer
- Research Unit Behavioural Physiology, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Falk Schneider
- Research Unit Reproductive Biology, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Joachim M. Weitzel
- Research Unit Reproductive Biology, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Anika Steinhoff-Ooster
- Institute of Animal Science, Physiology & Hygiene Unit, Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany
| | - Helga Sauerwein
- Institute of Animal Science, Physiology & Hygiene Unit, Rheinische Friedrich-Wilhelms-Universität, Bonn, Germany
| | - Olaf Bellmann
- Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Gerd Nürnberg
- Research Unit Genetics and Biometry, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Charlotte Rehfeldt
- Research Unit Muscle Biology & Growth, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
| | - Winfried Otten
- Research Unit Behavioural Physiology, Leibniz Institute for Farm Animal Biology (FBN), Dummerstorf, Germany
- * E-mail:
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