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Wu L, Ye S, Deng X, Fu Z, Li J, Yang C. Conjugated Linoleic Acid Ameliorates High Fat-Induced Insulin Resistance via Regulating Gut Microbiota-Host Metabolic and Immunomodulatory Interactions. Nutrients 2024; 16:1133. [PMID: 38674824 PMCID: PMC11053735 DOI: 10.3390/nu16081133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/20/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
Interaction between gut microbiota, host immunity and metabolism has been suggested to crucially affect the development of insulin resistance (IR). This study aims to investigate how gut microbiota, inflammatory responses and metabolism in individuals with IR are affected by the supplementation of conjugated linoleic acid (CLA) and how this subsequently affects the pathophysiology of IR by using a high-fat diet-induced IR mouse model. Serum biochemical indices showed that 400 mg/kg body weight of CLA effectively attenuated hyperglycemia, hyperlipidemia, glucose intolerance and IR, while also promoting antioxidant capacities. Histomorphology, gene and protein expression analysis revealed that CLA reduced fat deposition and inflammation, and enhanced fatty acid oxidation, insulin signaling and glucose transport in adipose tissue or liver. Hepatic transcriptome analysis confirmed that CLA inhibited inflammatory signaling pathways and promoted insulin, PI3K-Akt and AMPK signaling pathways, as well as linoleic acid, arachidonic acid, arginine and proline metabolism. Gut microbiome analysis further revealed that these effects were highly associated with the enriched bacteria that showed positive correlation with the production of short-chain fatty acids (SCFAs), as well as the improved SCFAs production simultaneously. This study highlights the therapeutic actions of CLA on ameliorating IR via regulating microbiota-host metabolic and immunomodulatory interactions, which have important implications for IR control.
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Affiliation(s)
- Linjun Wu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China; (L.W.); (S.Y.); (X.D.)
| | - Shijie Ye
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China; (L.W.); (S.Y.); (X.D.)
| | - Xiangfei Deng
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China; (L.W.); (S.Y.); (X.D.)
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China; (L.W.); (S.Y.); (X.D.)
| | - Jinjun Li
- Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
- Key Laboratory of Postharvest Preservation and Processing of Vegetables (Co-Construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Hangzhou 310021, China
- Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture and Rural Affairs, Hangzhou 310021, China
- Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Hangzhou 310021, China
| | - Chunlei Yang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China; (L.W.); (S.Y.); (X.D.)
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Ruan S, Gao X, Li B, Tian J. The synergic effects and mechanism of KGM-DMY complex in the prevention of obesity and enhancement of fatigue resistance in mice. Food Funct 2023; 14:2607-2620. [PMID: 36810428 DOI: 10.1039/d2fo03677k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Dietary fibers (DFs) are normally consumed together with polyphenols. Further, both of them are two kinds of popular functional ingredients. However, studies have shown that the soluble DFs and polyphenols are antagonistic to their bioactivity due to the potential loss of the physical properties that drive their benefits. In this study, konjac glucomannan (KGM), dihydromyricetin (DMY), and KGM-DMY complex were fed to mice on normal chow diet (NCD) and high fat diet (HFD). The body fat content, serum lipid metabolites and time to exhaustion in swimming were compared. It was found that KGM-DMY had synergistic effects on the reduction of serum triglyceride, total glycerol content in HFD-fed mice, and extension of time to exhaustion in swimming in NCD-fed mice. The underlying mechanism was explored by antioxidant enzyme activity measurement, energy production quantification, and gut microbiota 16S rDNA profiling. KGM-DMY synergistically reduced the lactate dehydrogenase activity, malondialdehyde production, and alanine aminotransferase activities after swimming. Moreover, superoxide dismutase activities, glutathione peroxidase activities, glycogen and adenosine triphosphate contents were synergistically enhanced by KGM-DMY complex. In addition, according to gut microbiota gene expression analyses, KGM-DMY enhanced the ratio of Bacteroidota/Firmicutes and the abundance of Oscillospiraceae and Romboutsia. The abundance of Desulfobacterota was also reduced. To our knowledge, this was the first experiment that indicated that the complex of polyphenols and DF have synergistic effects in obesity prevention and fatigue resistance. The study provided a perspective for the formulation of obese preventive nutritional supplement in the food industry.
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Affiliation(s)
- Shulan Ruan
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China
| | - Xuefeng Gao
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China
| | - Bin Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China
- Functional Food Engineering & Technology Research Center of Hubei Province, China
| | - Jing Tian
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
- Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China
- Functional Food Engineering & Technology Research Center of Hubei Province, China
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Di Chiacchio IM, Gómez-Abenza E, Paiva IM, de Abreu DJM, Rodríguez-Vidal JF, Carvalho EEN, Carvalho SM, Solis-Murgas LD, Mulero V. Bee pollen in zebrafish diet affects intestinal microbiota composition and skin cutaneous melanoma development. Sci Rep 2022; 12:9998. [PMID: 35705722 PMCID: PMC9200724 DOI: 10.1038/s41598-022-14245-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 06/03/2022] [Indexed: 11/08/2022] Open
Abstract
Bee pollen is recommended as dietary supplement due to immunostimulating functions including antioxidant, anti-inflammatory and anti-carcinogenic properties. Nevertheless, the effectiveness of such properties is still not well understood. As diet can be associated with animal performance, microbiota modulation and potentially factor for cancer, this study aimed to analyze if bee pollen could influence growth, gut microbial and skin cutaneous melanoma development in zebrafish. Control diets based on commercial flakes and Artemia were compared with the same diet supplemented with bee pollen. Fish weight gain, increased length, intestinal bacteria metagenomics analysis, serum amyloid A gene expression and cutaneous melanoma transplantation assays were performed. Bee pollen affected microbiota composition and melanoma development. Differential abundance revealed higher abundance in the control group for Aeromonadaceae family, Aeromonas and Pseudomonas genus, A. sobria, A. schubertii, A. jandaei and P. alcaligenes species compared with pollen diet group. Pollen group presented higher abundance for Chromobacterium genus and for Gemmobacter aquaticus, Flavobacterium succinicans and Bifidobacterium breve compared with control group. Unexpectedly, fish fed with bee pollen showed higher tumor growth rate and larger tumor size than control group. This is the first study to report intestinal microbial changes and no protective cancer properties after bee pollen administration.
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Affiliation(s)
- Isabela M Di Chiacchio
- Programa de Pós-graduação em Ciências Veterinárias-FZMV, Universidade Federal de Lavras, UFLA, 3037, Lavras, MG, 37200-900, Brasil
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia. IMIB-Arrixaca. CIBERER, 30100, Murcia, Spain
| | - Elena Gómez-Abenza
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia. IMIB-Arrixaca. CIBERER, 30100, Murcia, Spain
| | - Isadora M Paiva
- Laboratório de Genética Animal e Humana, Departamento de Genética, Ecologia e Evolução, Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, MG, 31270-901, Brasil
| | - Danilo J M de Abreu
- Programa de Pós-graduação em Microbiologia Agrícola-ICN, Universidade Federal de Lavras, UFLA, 3037, Lavras, MG, 37200-900, Brazil
| | - Juan Francisco Rodríguez-Vidal
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia. IMIB-Arrixaca. CIBERER, 30100, Murcia, Spain
| | - Elisângela E N Carvalho
- Departamento de Ciência dos Alimentos-ESAL, Universidade Federal de Lavras, UFLA, 3037, Lavras, MG, 37200-900, Brasil
| | - Stephan M Carvalho
- Programa de Pós-graduação em Entomologia-ESAL, Universidade Federal de Lavras, UFLA, 3037, Lavras, MG, 37200-900, Brasil
| | - Luis David Solis-Murgas
- Programa de Pós-graduação em Ciências Veterinárias-FZMV, Universidade Federal de Lavras, UFLA, 3037, Lavras, MG, 37200-900, Brasil.
| | - Victoriano Mulero
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia. IMIB-Arrixaca. CIBERER, 30100, Murcia, Spain.
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