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Chang R, Wang Z, Fu L, Chen C, Xu K, Ma A, Tian Y. Recrystallized resistant starch by encapsulation with konjac glucomannan: Structural changes, digestibility, and its effect on glucose response and short-term satiety in mice. Food Chem 2024; 442:138379. [PMID: 38241990 DOI: 10.1016/j.foodchem.2024.138379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 12/29/2023] [Accepted: 01/04/2024] [Indexed: 01/21/2024]
Abstract
The effects of the structure and digestibility of konjac glucomannan (KGM)-recrystallized resistant starch complex (KRS3) on the glycemic response and short-term satiety in mice were investigated. KRS3 samples were prepared by recrystallized debranched starch (RS3) at 50 °C, and then combined with KGM. The RS3 and KRS3 samples displayed an A-type pattern and maintained peak temperature values above 110 °C. With an increase in KGM, the swelling power and apparent viscosity of KRS3 increased. The results of in vitro and in vivo digestion revealed that KRS3 with a resistant starch content ranging from 69.4 % to 78.8 % could effectively maintain postprandial blood glucose levels. KRS3, particularly with 0.5 % KGM, slowed gastric emptying of mice from 82.7 % to 36.6 % and intestinal propulsion rate from 60.9 % to 35.3 %, resulting in strong satiety. RS3 combined with KGM could serve as a new approach to develop RS3 based foods with low glycemic responses and high-satiety.
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Affiliation(s)
- Ranran Chang
- Institute of Nutrition and Health, Qingdao University, Qingdao 266021, China; School of Public Health, Qingdao University, Qingdao 266021, China; National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian 116034, China
| | - Zihang Wang
- Institute of Nutrition and Health, Qingdao University, Qingdao 266021, China; School of Public Health, Qingdao University, Qingdao 266021, China
| | - Lili Fu
- Institute of Nutrition and Health, Qingdao University, Qingdao 266021, China; School of Public Health, Qingdao University, Qingdao 266021, China
| | - Chuanjing Chen
- Institute of Nutrition and Health, Qingdao University, Qingdao 266021, China; School of Public Health, Qingdao University, Qingdao 266021, China
| | - Kunjie Xu
- Institute of Nutrition and Health, Qingdao University, Qingdao 266021, China; School of Public Health, Qingdao University, Qingdao 266021, China
| | - Aiguo Ma
- Institute of Nutrition and Health, Qingdao University, Qingdao 266021, China; School of Public Health, Qingdao University, Qingdao 266021, China
| | - Yaoqi Tian
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
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Wang S, Zhang T, Li J, Zhang J, Swallah MS, Gao J, Piao C, Lyu B, Yu H. Oat β-glucan and L-arabinose synergistically ameliorate glucose uptake in insulin-resistant HepG2 cells and exert anti-diabetic activity via activation of the PI3K/AKT pathway in db/db mice. Food Funct 2022; 13:10158-10170. [PMID: 36106930 DOI: 10.1039/d2fo00889k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oat β-glucan (OBG) and L-arabinose (LA) have exhibited positive effects on diabetes and its complications. However, it is unclear whether OBG and LA have a synergistic effect. We investigated the effect of variable compositions (OBG : LA = 1 : 1, 1 : 2, 1 : 4,1 : 6, 1 : 8, 1 : 10, 2 : 1, 4 : 1, 6 : 1, 8 : 1, 10 : 1) on glucose uptake in IR-HepG2 cells induced by dexamethasone (DEX) to find out the optimal composition showing synergistic effects. Furthermore, this study evaluated the anti-diabetic activity of the optimal composition in db/db mice. In vitro, the OBG : LA = 1 : 1 group showed the strongest synergistic effects among the varied compositions, outperforming OBG and LA alone. In vivo, there were more beneficial effects in the OBG : LA = 1 : 1 group compared with the OBG and LA single-dosing groups. OBG : LA = 1 : 1 supplementation markedly decreased the levels of fasting blood glucose (FBG) and insulin (INS) in serum, improved glucose tolerance and insulin sensitivity, lowered blood lipid levels, and reduced liver lipid accumulation. Moreover, the western blot results indicated that the OBG : LA = 1 : 1 group up-regulated the protein expression of glucose transporter-4 (GLUT4), phosphatidylinositol 3-kinase (PI3K), and phospho-protein kinase B (p-AKT), while down-regulating the protein expression of phospho-phosphorylated insulin receptor substrate-1 (p-IRS1) to enhance insulin transduction in liver tissues. These findings suggest that OBG : LA = 1 : 1 synergistically ameliorated glucose metabolism disorders and alleviated insulin resistance by promoting the PI3K/AKT pathway in the liver.
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Affiliation(s)
- Sainan Wang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, 130118, China. .,Division of Soybean Processing, Soybean Research & Development Center, Chinese Agricultural Research System, Changchun, 130118, China
| | - Tian Zhang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, 130118, China.
| | - Jiaxin Li
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, 130118, China. .,Division of Soybean Processing, Soybean Research & Development Center, Chinese Agricultural Research System, Changchun, 130118, China
| | - Jiarui Zhang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, 130118, China. .,Division of Soybean Processing, Soybean Research & Development Center, Chinese Agricultural Research System, Changchun, 130118, China
| | - Mohammed Sharif Swallah
- Science Island Branch of Graduate School, University of Science and Technology of China, Hefei, 230026, China
| | - Junpeng Gao
- College of Life Science, Jilin Agricultural University, Changchun, 130118, China
| | - Chunhong Piao
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, 130118, China. .,Division of Soybean Processing, Soybean Research & Development Center, Chinese Agricultural Research System, Changchun, 130118, China
| | - Bo Lyu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, 130118, China. .,Division of Soybean Processing, Soybean Research & Development Center, Chinese Agricultural Research System, Changchun, 130118, China
| | - Hansong Yu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun, 130118, China. .,Division of Soybean Processing, Soybean Research & Development Center, Chinese Agricultural Research System, Changchun, 130118, China
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Ling X, Peng S, Zhong J, Guo L, Xu Y, Jin X, Chu F. Effects of Chang-Kang-Fang Formula on the Microbiota-Gut-Brain Axis in Rats With Irritable Bowel Syndrome. Front Pharmacol 2022; 13:778032. [PMID: 35614949 PMCID: PMC9125359 DOI: 10.3389/fphar.2022.778032] [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: 11/02/2021] [Accepted: 04/06/2022] [Indexed: 11/13/2022] Open
Abstract
Chang-Kang-Fang formula (CKF), a multi-herb traditional Chinese medicine, has been used in clinical settings to treat irritable bowel syndrome (IBS). Recent studies show that 5.0 g/kg/d CKF can alleviate the symptoms of IBS rats by modulating the brain-gut axis through the production of brain-gut peptides (BGPs), thus relieving pain, and reversing the effects of intestinal propulsion disorders. However, the exact mechanisms underlying the therapeutic effects of CKF in IBS remain unclear. The microbiota-gut-brain axis (MGBA) is central to the pathogenesis of IBS, regulating BGPs, depression-like behaviors, and gut microbiota. Given that CKF ameliorates IBS via the MGBA, we performed metabolomic analyses, evaluated the gut microbiota, and system pharmacology to elucidate the mechanisms of action of CKF. The results of intestinal tract motility, abdominal withdrawal reflex (AWR), sucrose preference test (SPT), and the forced swimming test (FST) showed that the male Sprague-Dawley rats subjected to chronic acute combining stress (CACS) for 22 days exhibited altered intestinal motility, visceral hypersensitivity, and depression-like behaviors. Treatment of IBS rats with CKF normalized dysfunctions of CACS-induced central and peripheral nervous system. CKF regulated BDNF and 5-HT levels in the colon and hippocampus as well as the expressions of the related BGP pathway genes. Moreover, the system pharmacology assays were used to assess the physiological targets involved in the action of CKF, with results suggesting that CKF putatively functioned through the 5-HT-PKA-CREB-BDNF pathway. LC-MS-based metabolomics identified the significantly altered 5-HT pathway-related metabolites in the CKF treatment group, and thus, the CKF-related signaling pathways were further examined. After pyrosequencing-based analysis of bacterial 16S rRNA (V3 + V4 region) using rat feces, the Lefse analysis of gut microbiota suggested that CKF treatment could induce structural changes in the gut microbiota, thereby regulating it by decreasing Clostridiales, and the F-B ratio while increasing the levels of Lactobacillus. Furthermore, the integrated analysis showed a correlation of CKF-associated microbes with metabolites. These findings showed that CKF effectively alleviated IBS, which was associated with the altered features of the metabolite profiles and the gut microbiota through a bidirectional communication along the microbiota-gut-brain axis.
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Affiliation(s)
- Xiwen Ling
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangzhou Higher Education Mega Center, Guangdong Pharmaceutical University, Guangzhou, China
| | - Siyuan Peng
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangzhou Higher Education Mega Center, Guangdong Pharmaceutical University, Guangzhou, China
| | - Jingbin Zhong
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Lirong Guo
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangzhou Higher Education Mega Center, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yaqin Xu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangzhou Higher Education Mega Center, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xiaobao Jin
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangzhou Higher Education Mega Center, Guangdong Pharmaceutical University, Guangzhou, China
| | - Fujiang Chu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangzhou Higher Education Mega Center, Guangdong Pharmaceutical University, Guangzhou, China
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Li YC, Luo Y, Meng FB, Li J, Chen WJ, Liu DY, Zou LH, Zhou L. Preparation and characterization of feruloylated oat β-glucan with antioxidant activity and colon-targeted delivery. Carbohydr Polym 2022; 279:119002. [PMID: 34980350 DOI: 10.1016/j.carbpol.2021.119002] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/05/2021] [Accepted: 12/07/2021] [Indexed: 01/04/2023]
Abstract
Ferulic acid (FA) is an effective chemopreventive and therapeutic agent for colorectal cancer. However, FA cannot stably reach the colon through human digestive system, and it can be grafted into oligosaccharides to improve its digestion stability. Therefore, in this study, different degrees of substitution of feruloylated oat β-glucan (FA-OβG) were prepared by grafting FA onto water soluble oat β-glucan. FA grafting changed the crystallinity and surface morphology of OβG, and the thermal stability of the FA-OβG improved. As the DS increased, the antioxidant activity of FA-OβG increased, and FA-OβG III with DS of 0.184 showed the same antioxidant activities compared to the equal amount of free FA. The FA-OβG showed higher stability under gastrointestinal and colonic conditions than free FA. Furthermore, the FA-OβG conjugates exhibited good in vitro anticancer activity against human colorectal cancer cells, while FA-OβG III showed better anticancer activity than an equal amount of free FA.
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Affiliation(s)
- Yun-Cheng Li
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Chengdu 610106, China
| | - Yan Luo
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China; Sichuan Research Institute, Shanghai Jiao Tong University, Chengdu 610106, China
| | - Fan-Bing Meng
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China.
| | - Jian Li
- School of Preclinical Medicine, Chengdu University, Chengdu 610106, China
| | - Wei-Jun Chen
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Da-Yu Liu
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Long-Hua Zou
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Li Zhou
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
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Cawthon CR, de La Serre CB. The critical role of CCK in the regulation of food intake and diet-induced obesity. Peptides 2021; 138:170492. [PMID: 33422646 DOI: 10.1016/j.peptides.2020.170492] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 12/16/2020] [Accepted: 12/23/2020] [Indexed: 12/17/2022]
Abstract
In 1973, Gibbs, Young, and Smith showed that exogenous cholecystokinin (CCK) administration reduces food intake in rats. This initial report has led to thousands of studies investigating the physiological role of CCK in regulating feeding behavior. CCK is released from enteroendocrine I cells present along the gastrointestinal (GI) tract. CCK binding to its receptor CCK1R leads to vagal afferent activation providing post-ingestive feedback to the hindbrain. Vagal afferent neurons' (VAN) sensitivity to CCK is modulated by energy status while CCK signaling regulates gene expression of other feeding related signals and receptors expressed by VAN. In addition to its satiation effects, CCK acts all along the GI tract to optimize digestion and nutrient absorption. Diet-induced obesity (DIO) is characterized by reduced sensitivity to CCK and every part of the CCK system is negatively affected by chronic intake of energy-dense foods. EEC have recently been shown to adapt to diet, CCK1R is affected by dietary fats consumption, and the VAN phenotypic flexibility is lost in DIO. Altered endocannabinoid tone, changes in gut microbiota composition, and chronic inflammation are currently being explored as potential mechanisms for diet driven loss in CCK signaling. This review discusses our current understanding of how CCK controls food intake in conditions of leanness and how control is lost in chronic energy excess and obesity, potentially perpetuating excessive intake.
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Affiliation(s)
- Carolina R Cawthon
- Department of Foods and Nutrition, University of Georgia, Athens, GA, USA
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Zhou Y, Qin J, Wang Y, Wang Y, Cheng Y. Gastrointestinal and metabolic effects of noodles-based konjac glucomannan in rats. Food Nutr Res 2019; 63:1997. [PMID: 31903092 PMCID: PMC6925537 DOI: 10.29219/fnr.v63.1997] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 08/15/2019] [Accepted: 08/26/2019] [Indexed: 12/25/2022] Open
Abstract
This study was conducted to investigate the hypothesis that the beneficial metabolic effects of dietary fiber, konjac glucomannan (KGM), related with in vivo digestion might be altered if the complicated food matrix was taken into consideration. A diet of precooked noodles (PN), as widely produced and consumed in Asia, was used to simulate an actual food context. Assays were conducted with male Wistar rats (n = 80); the rats were divided into five groups and fed with either PN (control), PN supplemented with medium-dose KGM (MK), precooked low-dose KGM-supplemented noodles (LKD), precooked medium-dose KGM-supplemented noodles (MKD) or precooked high-dose KGM supplemented noodles (HKD). The time-dependent changes in blood glucose and the sensitivity to insulin after intragastric administration were determined to evaluate the postprandial glycemic response. The activity of intestinal Na+-K+-ATPase and the levels of gut hormones including motilin, cholecystokin, GLP-1, and orexin were also determined to provide insights into the function of gastrointestinal motion and after-meal hormonal feedback in each group. The noodles-based KGM showed much more efficacy in sustaining glucose homeostasis compared with KGM supplemented in a diet of noodles, indicating there might be potential long-term health outcomes of satiety and energy balance using noodles-based KGM. The postprandial glycemia was largely moderated by LKD and MKD. Despite the significant reduction in the production of glucose, MKD caused insensitivity to insulin-blood glucose regulation and a rapid gut negative feedback following a severe blood glucose fluctuation. In conclusion, the health-promoting benefits of KGM supplements on glycemic response highly depend on the type of matrix and the dose of KGM.
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Affiliation(s)
- Yun Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- College of Food Science, Southwest University, Chongqing, People’s Republic of China
| | - Jiangdan Qin
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yongquan Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yichen Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yongqiang Cheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
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