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Han X, Hu X, Jin W, Liu G. Dietary nutrition, intestinal microbiota dysbiosis and post-weaning diarrhea in piglets. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2024; 17:188-207. [PMID: 38800735 PMCID: PMC11126776 DOI: 10.1016/j.aninu.2023.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/12/2023] [Accepted: 12/21/2023] [Indexed: 05/29/2024]
Abstract
Weaning is a critical transitional point in the life cycle of piglets. Early weaning can lead to post-weaning syndrome, destroy the intestinal barrier function and microbiota homeostasis, cause diarrhea and threaten the health of piglets. The nutritional components of milk and solid foods consumed by newborn animals can affect the diversity and structure of their intestinal microbiota, and regulate post-weaning diarrhea in piglets. Therefore, this paper reviews the effects and mechanisms of different nutrients, including protein, dietary fiber, dietary fatty acids and dietary electrolyte balance, on diarrhea and health of piglets by regulating intestinal function. Protein is an essential nutrient for the growth of piglets; however, excessive intake will cause many harmful effects, such as allergic reactions, intestinal barrier dysfunction and pathogenic growth, eventually aggravating piglet diarrhea. Dietary fiber is a nutrient that alleviates post-weaning diarrhea in piglets, which is related to its promotion of intestinal epithelial integrity, microbial homeostasis and the production of short-chain fatty acids. In addition, dietary fatty acids and dietary electrolyte balance can also facilitate the growth, function and health of piglets by regulating intestinal epithelial function, immune system and microbiota. Thus, a targeted control of dietary components to promote the establishment of a healthy bacterial community is a significant method for preventing nutritional diarrhea in weaned piglets.
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Affiliation(s)
- Xuebing Han
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, China
- College of Bioscience and Biotechnology, Hunan Agricultural University, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Changsha, Hunan 410125, China
| | - Xiangdong Hu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Wei Jin
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, China
| | - Gang Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Changsha, Hunan 410125, China
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Ticinesi A, Nouvenne A, Cerundolo N, Parise A, Mena P, Meschi T. The interaction between Mediterranean diet and intestinal microbiome: relevance for preventive strategies against frailty in older individuals. Aging Clin Exp Res 2024; 36:58. [PMID: 38448632 PMCID: PMC10917833 DOI: 10.1007/s40520-024-02707-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 01/22/2024] [Indexed: 03/08/2024]
Abstract
Age-related changes in intestinal microbiome composition and function are increasingly recognized as pivotal in the pathophysiology of aging and are associated with the aging phenotype. Diet is a major determinant of gut-microbiota composition throughout the entire lifespan, and several of the benefits of a healthy diet in aging could be mediated by the microbiome. Mediterranean diet (MD) is a traditional dietary pattern regarded as the healthy diet paradigm, and a large number of studies have demonstrated its benefits in promoting healthy aging. MD has also a positive modulatory effect on intestinal microbiome, favoring bacterial taxa involved in the synthesis of several bioactive compounds, such as short-chain fatty acids (SCFAs), that counteract inflammation, anabolic resistance, and tissue degeneration. Intervention studies conducted in older populations have suggested that the individual response of older subjects to MD, in terms of reduction of frailty scores and amelioration of cognitive function, is significantly mediated by the gut-microbiota composition and functionality. In this context, the pathophysiology of intestinal microbiome in aging should be considered when designing MD-based interventions tailored to the needs of geriatric patients.
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Affiliation(s)
- Andrea Ticinesi
- Department of Medicine and Surgery, University of Parma, Via Antonio Gramsci 14, 43126, Parma, Italy.
- Microbiome Research Hub, University of Parma, Parma, Italy.
- Geriatric-Rehabilitation Department, Azienda Ospedaliero-Universitaria Di Parma, Parma, Italy.
| | - Antonio Nouvenne
- Department of Medicine and Surgery, University of Parma, Via Antonio Gramsci 14, 43126, Parma, Italy
- Microbiome Research Hub, University of Parma, Parma, Italy
- Geriatric-Rehabilitation Department, Azienda Ospedaliero-Universitaria Di Parma, Parma, Italy
| | - Nicoletta Cerundolo
- Geriatric-Rehabilitation Department, Azienda Ospedaliero-Universitaria Di Parma, Parma, Italy
| | - Alberto Parise
- Geriatric-Rehabilitation Department, Azienda Ospedaliero-Universitaria Di Parma, Parma, Italy
| | - Pedro Mena
- Microbiome Research Hub, University of Parma, Parma, Italy
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, Parma, Italy
| | - Tiziana Meschi
- Department of Medicine and Surgery, University of Parma, Via Antonio Gramsci 14, 43126, Parma, Italy
- Microbiome Research Hub, University of Parma, Parma, Italy
- Geriatric-Rehabilitation Department, Azienda Ospedaliero-Universitaria Di Parma, Parma, Italy
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Zhang Q, Li X, Huang T, Zhang S, Teng K, Rousitemu N, Lan T, Wen Y. Alterations in the diversity, composition and function of the gut microbiota in Uyghur individuals with sarcopenia. Exp Gerontol 2024; 187:112376. [PMID: 38331300 DOI: 10.1016/j.exger.2024.112376] [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: 11/05/2023] [Revised: 01/22/2024] [Accepted: 02/05/2024] [Indexed: 02/10/2024]
Abstract
BACKGROUND Research on the gut microbiota has emerged as a new direction for understanding pathophysiologic changes in diseases associated with aging, such as sarcopenia. Several studies have shown that there are differences in the gut microbiota between individuals with sarcopenia and without sarcopenia. However, these differences are not consistent across regions and ethnic groups, and additional research is needed. METHODS In this study, we collected fresh fecal samples from 31 Uyghur individuals with sarcopenia and 31 healthy controls. We used 16S rRNA sequencing to obtain fecal base sequences and analyzed the diversity, composition and function of the gut microbiota. RESULTS There was no significant difference in alpha diversity between the sarcopenia group and the healthy control group (P > 0.05). There was a significant difference in beta diversity between the groups (P < 0.05). In the sarcopenia group, the abundances of Alloprevotella, un_f_Prevotellaceae, Anaerovibrio, Prevotellaceae_NK3B31_group, Mitsuokella, Prevotella and Allisonella were lower than those in the heathy control group, and the abundances of Flavobacteriales, Flavobacteriaceae, Catenibacterium, Romboutsia, Erysipelotrichaceae_UCG-003, GCA-900066575, Lachnospiraceae_FCS020_group, and un_f_Flavobacteriaceae were higher than those in the heathy control group. Linear discriminant analysis effect size (LEfSe) revealed that the microbial species in the control group that were significantly different from those in the sarcopenia group were concentrated in the genus Alloprevotella, while the species in the sarcopenia group were concentrated in the genus Catenibacterium. Functional prediction analysis revealed that D-alanine, glycine, serine, and threonine metabolism and transcription machinery, among others, were enriched in the sarcopenia group, which indicated that metabolic pathways related to amino acid metabolism and nutrient transport may be regulated to varying degrees in the pathophysiological context of sarcopenia. CONCLUSIONS There were significant differences in the composition and function of the gut microbiota between Xinjiang Uyghur sarcopenia individuals and healthy individuals. These findings might aid in the development of probiotics or microbial-based therapies for sarcopenia in Uyhur individuals.
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Affiliation(s)
- Qiuxi Zhang
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
| | - Xin Li
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
| | - Ting Huang
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
| | - Shuang Zhang
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
| | - Kunchen Teng
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
| | - Namuna Rousitemu
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
| | - Ting Lan
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
| | - Youfeng Wen
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China.
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4
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Ni Lochlainn M, Bowyer RCE, Moll JM, García MP, Wadge S, Baleanu AF, Nessa A, Sheedy A, Akdag G, Hart D, Raffaele G, Seed PT, Murphy C, Harridge SDR, Welch AA, Greig C, Whelan K, Steves CJ. Effect of gut microbiome modulation on muscle function and cognition: the PROMOTe randomised controlled trial. Nat Commun 2024; 15:1859. [PMID: 38424099 PMCID: PMC10904794 DOI: 10.1038/s41467-024-46116-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 02/12/2024] [Indexed: 03/02/2024] Open
Abstract
Studies suggest that inducing gut microbiota changes may alter both muscle physiology and cognitive behaviour. Gut microbiota may play a role in both anabolic resistance of older muscle, and cognition. In this placebo controlled double blinded randomised controlled trial of 36 twin pairs (72 individuals), aged ≥60, each twin pair are block randomised to receive either placebo or prebiotic daily for 12 weeks. Resistance exercise and branched chain amino acid (BCAA) supplementation is prescribed to all participants. Outcomes are physical function and cognition. The trial is carried out remotely using video visits, online questionnaires and cognitive testing, and posting of equipment and biological samples. The prebiotic supplement is well tolerated and results in a changed gut microbiome [e.g., increased relative Bifidobacterium abundance]. There is no significant difference between prebiotic and placebo for the primary outcome of chair rise time (β = 0.579; 95% CI -1.080-2.239 p = 0.494). The prebiotic improves cognition (factor score versus placebo (β = -0.482; 95% CI,-0.813, -0.141; p = 0.014)). Our results demonstrate that cheap and readily available gut microbiome interventions may improve cognition in our ageing population. We illustrate the feasibility of remotely delivered trials for older people, which could reduce under-representation of older people in clinical trials. ClinicalTrials.gov registration: NCT04309292.
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Affiliation(s)
- Mary Ni Lochlainn
- King's College London, Department of Twin Research and Genetic Epidemiology, London, SE1 7EH, UK.
| | - Ruth C E Bowyer
- King's College London, Department of Twin Research and Genetic Epidemiology, London, SE1 7EH, UK
- The Alan Turing Institute, London, NW1 2DB, UK
| | | | - María Paz García
- King's College London, Department of Twin Research and Genetic Epidemiology, London, SE1 7EH, UK
| | - Samuel Wadge
- King's College London, Department of Twin Research and Genetic Epidemiology, London, SE1 7EH, UK
| | - Andrei-Florin Baleanu
- King's College London, Department of Twin Research and Genetic Epidemiology, London, SE1 7EH, UK
| | - Ayrun Nessa
- King's College London, Department of Twin Research and Genetic Epidemiology, London, SE1 7EH, UK
| | - Alyce Sheedy
- King's College London, Department of Twin Research and Genetic Epidemiology, London, SE1 7EH, UK
| | - Gulsah Akdag
- King's College London, Department of Twin Research and Genetic Epidemiology, London, SE1 7EH, UK
| | - Deborah Hart
- King's College London, Department of Twin Research and Genetic Epidemiology, London, SE1 7EH, UK
| | - Giulia Raffaele
- GKT School of Medical Education, King's College London, London, UK
| | - Paul T Seed
- Unit for Medical Statistics/Department for Women and Children's Health, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Caroline Murphy
- King's Clinical Trials Unit, Research Management and Innovation Directorate, King's College London, London, UK
| | - Stephen D R Harridge
- Centre for Human & Applied Physiological Sciences, King's College London, London, UK
| | - Ailsa A Welch
- Department of Epidemiology and Public Health, Norwich Medical School, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Carolyn Greig
- School of Sport, Exercise, and Rehabilitation Sciences, University of Birmingham, Birmingham, UK
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, Birmingham, UK
- NIHR Birmingham Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and University of Birmingham, Birmingham, UK
| | - Kevin Whelan
- King's College London, Department of Nutritional Sciences, Franklin Wilkins Building, SE1 9NH, London, UK
| | - Claire J Steves
- King's College London, Department of Twin Research and Genetic Epidemiology, London, SE1 7EH, UK.
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Ooi H, Welch C. Obstacles to the Early Diagnosis and Management of Sarcopenia: Current Perspectives. Clin Interv Aging 2024; 19:323-332. [PMID: 38404480 PMCID: PMC10893890 DOI: 10.2147/cia.s438144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/14/2024] [Indexed: 02/27/2024] Open
Abstract
Research in sarcopenia has grown exponentially over the last 15 years in geriatrics and gerontology, as well as other specialties, including oncology and hepatology. There is now strong evidence for the role of resistance exercise to prevent declines in muscle strength and function, especially when combined with nutritional optimization with protein supplementation. However, there remains a disparity between research evidence and clinical practice. There are multiple factors for this, which relate to the current diagnostic criteria for sarcopenia, practical and logistical aspects of diagnosis of sarcopenia, clinician knowledge of both diagnosis and management, and the availability of pathways for interventions. Sarcopenia is currently defined based on the identification of muscle strength, in combination with muscle size or quality, below cut-off thresholds at a single timepoint. This defines sarcopenia as a binary process of either present or not present, thus early diagnosis can be challenging. In this article, we summarize current obstacles to early diagnosis and management of sarcopenia in clinical practice, and make recommendations to how these might be overcome. This includes our recommendation of incorporation of handgrip strength measurement into standard care, to enable dynamic assessment and identification of early declines in handgrip strength, so that interventions can be implemented to prevent disability.
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Affiliation(s)
- Hoyli Ooi
- Department of Ageing and Health, Guy’s and St Thomas’ NHS Foundation Trust, St Thomas’ Hospital, London, UK
| | - Carly Welch
- Department of Ageing and Health, Guy’s and St Thomas’ NHS Foundation Trust, St Thomas’ Hospital, London, UK
- Department of Twin Research and Genetic Epidemiology, School of Life Course and Population Sciences, St Thomas’ Campus, King’s College London, London, UK
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Wang Y, Li Y, Bo L, Zhou E, Chen Y, Naranmandakh S, Xie W, Ru Q, Chen L, Zhu Z, Ding C, Wu Y. Progress of linking gut microbiota and musculoskeletal health: casualty, mechanisms, and translational values. Gut Microbes 2023; 15:2263207. [PMID: 37800576 PMCID: PMC10561578 DOI: 10.1080/19490976.2023.2263207] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 09/21/2023] [Indexed: 10/07/2023] Open
Abstract
The musculoskeletal system is important for balancing metabolic activity and maintaining health. Recent studies have shown that distortions in homeostasis of the intestinal microbiota are correlated with or may even contribute to abnormalities in musculoskeletal system function. Research has also shown that the intestinal flora and its secondary metabolites can impact the musculoskeletal system by regulating various phenomena, such as inflammation and immune and metabolic activities. Most of the existing literature supports that reasonable nutritional intervention helps to improve and maintain the homeostasis of intestinal microbiota, and may have a positive impact on musculoskeletal health. The purpose of organizing, summarizing and discussing the existing literature is to explore whether the intervention methods, including nutritional supplement and moderate exercise, can affect the muscle and bone health by regulating the microecology of the intestinal flora. More in-depth efficacy verification experiments will be helpful for clinical applications.
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Affiliation(s)
- Yu Wang
- Department of Health and Kinesiology, School of Physical Education, Jianghan University, Wuhan, China
| | - Yusheng Li
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Lin Bo
- Department of Rheumatology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Enyuan Zhou
- Department of Health and Kinesiology, School of Physical Education, Jianghan University, Wuhan, China
| | - Yanyan Chen
- Department of Health and Kinesiology, School of Physical Education, Jianghan University, Wuhan, China
| | - Shinen Naranmandakh
- School of Arts and Sciences, National University of Mongolia, Ulaanbaatar, Mongolia
| | - Wenqing Xie
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Qin Ru
- Department of Health and Kinesiology, School of Physical Education, Jianghan University, Wuhan, China
| | - Lin Chen
- Department of Health and Kinesiology, School of Physical Education, Jianghan University, Wuhan, China
| | - Zhaohua Zhu
- Clinical Research Centre, Orthopedic Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Changhai Ding
- Clinical Research Centre, Orthopedic Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, China
- Department of Rheumatology, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, China
- Department of Orthopaedics, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, China
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Australia
| | - Yuxiang Wu
- Department of Health and Kinesiology, School of Physical Education, Jianghan University, Wuhan, China
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7
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Zhou J, Liu J, Lin Q, Shi L, Zeng Z, Guan L, Ma Y, Zeng Y, Zhong S, Xu L. Characteristics of the gut microbiome and metabolic profile in elderly patients with sarcopenia. Front Pharmacol 2023; 14:1279448. [PMID: 38026977 PMCID: PMC10654747 DOI: 10.3389/fphar.2023.1279448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 10/17/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction: There is growing evidence of research indicating that the gut microbiota is involved in the development of sarcopenia. Nevertheless, there exists a notable deficiency in comprehension concerning the connection between irregularities in the intestinal microbiome and metabolic processes in older individuals suffering from sarcopenia. Methods: To analyze fecal samples obtained from a cohort of 30 older patients diagnosed with sarcopenia as well as 30 older patients without sarcopenia, this study employed 16S rDNA sequencing and liquid chromatography-mass spectrometry (LC-MS)-based non-targeted metabolomics profiling techniques. Results: As a result, we found that 29 genera and 172 metabolites were significantly altered in the sarcopenic patients. Among them, Blautia, Lachnospiraceae_unclassified, and Subdoligranulum were the bacteria with a potential diagnostic value for sarcopenia diagnosis. Correlation analysis between clinical indices and these gut bacteria suggested that the IL-6 level was negatively correlated with Blautia. Function prediction analysis demonstrated that 17 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways differ significantly between sarcopenic and non-sarcopenic patients. The primary classes of metabolites identified in the study included lipids and lipid-like molecules, organic acids and derivatives, and organoheterocyclic compounds. KEGG enrichment analysis showed that purine metabolism, arginine and proline metabolism, alanine, aspartate, and glutamate metabolism, butanoate metabolism, and histidine metabolism may contribute to the development of sarcopenia. The correlation study on gut microbiota and metabolites found that Lachnospiraceae_unclassified was positively associated with seven metabolites that were more abundant in the non-sarcopenia group and negatively correlated with three metabolites that were more abundant in the sarcopenia group. In addition, Subdoligranulum was positively correlated with seven metabolites that were lacking in sarcopenia and negatively correlated with two metabolites that were enriching in sarcopenia. Moreover, Blautia was positively associated with xanthosine. Discussion: We conducted a study on the intestinal microbiota and metabolic profile of elderly individuals with sarcopenia, offering a comprehensive analysis of the overall ecosystem. Through this investigation, we were able to validate existing research on the gut-muscle axis and further investigate potential pathogenic processes and treatment options for sarcopenia.
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Affiliation(s)
- Jing Zhou
- Department of Geriatric Gastroenterology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Jiang Liu
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Qinqing Lin
- Department of Geriatric Gastroenterology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- College of Medicine, Shantou University, Shantou, China
| | - Linhui Shi
- Department of Geriatric Gastroenterology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Zhigang Zeng
- Department of Digestive Endoscopy Center, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Lichang Guan
- Department of Geriatric Gastroenterology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Yunzi Ma
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Yingtong Zeng
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Shilong Zhong
- Department of Pharmacy, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- Laboratory of Phase I Clinical Trials, Center of Medical Research, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
| | - Lishu Xu
- Department of Geriatric Gastroenterology, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
- Guangdong Provincial Institute of Geriatrics, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
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Tang CM, Zhang Z, Sun Y, Ding WJ, Yang XC, Song YP, Ling MY, Li XH, Yan R, Zheng YJ, Yu N, Zhang WH, Wang Y, Wang SP, Gao HQ, Zhao CL, Xing YQ. Multi-omics reveals aging-related pathway in natural aging mouse liver. Heliyon 2023; 9:e21011. [PMID: 37920504 PMCID: PMC10618800 DOI: 10.1016/j.heliyon.2023.e21011] [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: 04/13/2023] [Revised: 10/01/2023] [Accepted: 10/12/2023] [Indexed: 11/04/2023] Open
Abstract
Aging is associated with gradual changes in liver structure, altered metabolites and other physiological/pathological functions in hepatic cells. However, its characterized phenotypes based on altered metabolites and the underlying biological mechanism are unclear. Advancements in high-throughput omics technology provide new opportunities to understand the pathological process of aging. Here, in our present study, both metabolomics and phosphoproteomics were applied to identify the altered metabolites and phosphorylated proteins in liver of young (the WTY group) and naturally aged (the WTA group) mice, to find novel biomarkers and pathways, and uncover the biological mechanism. Analysis showed that the body weights, alanine aminotransferase (ALT) and aspartate aminotransferase (AST) increased in the WTA group. The grips decreased with age, while the triglyceride (TG) and cholesterol (TC) did not change significantly. The increase of fibrosis, accumulation of inflammatory cells, hepatocytes degeneration, the deposition of lipid droplets and glycogen, the damaged mitochondria, and deduction of endoplasmic reticulum were observed in the aging liver under optical and electron microscopes. In addition, a network of metabolites and phosphorylated proteomes of the aging liver was established. Metabolomics detected 970 metabolites in the positive ion mode and 778 metabolites in the negative ion mode. A total of 150 pathways were pooled. Phosphoproteomics identified 2618 proteins which contained 16621 phosphosites. A total of 164 pathways were detected. 65 common pathways were detected in two omics. Phosphorylated protein heat shock protein HSP 90-alpha (HSP90A) and v-raf murine viral oncogene homolog B1(BRAF), related to cancer pathway, were significantly upregulated in aged mice liver. Western blot verified that protein expression of MEK and ERK, downstream of BRAF pathway were elevated in the liver of aging mice. However, the protein expression of BRAF was not a significant difference. Overall, these findings revealed a close link between aging and cancer and contributed to our understanding of the multi-omics changes in natural aging.
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Affiliation(s)
- Cong-min Tang
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan 250012, Shandong Province, China
- Department of Ultrasound, Shandong Provincial Third Hospital, Jinan 250031, Shandong Province, China
| | - Zhen Zhang
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Yan Sun
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Wen-jing Ding
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan 250012, Shandong Province, China
| | - Xue-chun Yang
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan 250012, Shandong Province, China
| | - Yi-ping Song
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Ming-ying Ling
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
- Institute of Basic Medical Sciences, Qilu Hospital, Shandong University, Jinan 250012, Shandong Province, China
| | - Xue-hui Li
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Rong Yan
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Yu-jing Zheng
- Shandong Precision Medicine Engineering Laboratory of Bacterial Anti-tumor Drugs, Jinan 250101, Shandong Province, China
| | - Na Yu
- Shandong Precision Medicine Engineering Laboratory of Bacterial Anti-tumor Drugs, Jinan 250101, Shandong Province, China
| | - Wen-hua Zhang
- Shandong Precision Medicine Engineering Laboratory of Bacterial Anti-tumor Drugs, Jinan 250101, Shandong Province, China
| | - Yong Wang
- Shandong Precision Medicine Engineering Laboratory of Bacterial Anti-tumor Drugs, Jinan 250101, Shandong Province, China
| | - Shao-peng Wang
- Shandong Precision Medicine Engineering Laboratory of Bacterial Anti-tumor Drugs, Jinan 250101, Shandong Province, China
| | - Hai-qing Gao
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Chuan-li Zhao
- Dept of Hematology, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Yan-qiu Xing
- Department of Geriatric Medicine, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
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Shokri‐Mashhadi N, Navab F, Ansari S, Rouhani MH, Hajhashemy Z, Saraf‐Bank S. A meta-analysis of the effect of probiotic administration on age-related sarcopenia. Food Sci Nutr 2023; 11:4975-4987. [PMID: 37701185 PMCID: PMC10494607 DOI: 10.1002/fsn3.3515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/24/2023] [Accepted: 06/09/2023] [Indexed: 09/14/2023] Open
Abstract
Global increase in the prevalence of age-related diseases, such as sarcopenia, highlights the need of recognizing agents that improve muscle health; however, the evidence synthesis on the impact of probiotic administration on sarcopenia is scarce. To summarize and evaluate findings regarding the effect of supplementation with probiotics on sarcopenia, this meta-analysis was conducted. Using databases, including PubMed, SCOPUS, ISI-Web of Science, and Cochrane Library, interventional studies were included if they investigate the effect of probiotic administration on at least one of the components of sarcopenia up to 6 October 2022. Risk of bias evaluation was conducted using the Cochrane quality assessment tool. The random-effects model which takes between-study variations into account was used to obtain the overall effect sizes. The STATA version 14.0 was used for statistical analyses. Overall, 17 studies were included. There was high certainty of evidence that probiotic supplementation has a beneficial effect on muscle mass (kg) (WMD: 0.55, 95% CI: 0.05, 1.05; I 2: 0.0%, p = .995), and muscle function (WMD: 0.13, 95% CI: 0.03, 0.23; I 2: 65.6%, p = .05). Moreover, administration of probiotics for more than 12 weeks significantly increased muscle strength (WMD: 1.16, 95% CI: 0.88, 1.44; I 2: 0.0%, p = .77). However, probiotic supplementation had no effect on anthropometric indices, including body mass index. Probiotic supplementation could improve muscle mass and muscle function in adults more than 55 years old. The beneficial effect of probiotics on muscle strength could appear after 12 weeks of supplementation.
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Affiliation(s)
- Nafiseh Shokri‐Mashhadi
- Department of Clinical Nutrition, School of Nutrition and Food Science, Nutrition and Food Security Research CenterIsfahan University of Medical SciencesIsfahanIran
| | - Fatemeh Navab
- Department of Community Nutrition, School of Nutrition and Food Science, Nutrition and Food Security Research CenterIsfahan University of Medical SciencesIsfahanIran
| | - Shakila Ansari
- Department of Community Nutrition, School of Nutrition and Food Science, Nutrition and Food Security Research CenterIsfahan University of Medical SciencesIsfahanIran
| | - Mohammad Hossein Rouhani
- Department of Community Nutrition, School of Nutrition and Food Science, Nutrition and Food Security Research CenterIsfahan University of Medical SciencesIsfahanIran
| | - Zahra Hajhashemy
- Department of Community Nutrition, School of Nutrition and Food Science, Nutrition and Food Security Research CenterIsfahan University of Medical SciencesIsfahanIran
| | - Sahar Saraf‐Bank
- Department of Community Nutrition, School of Nutrition and Food Science, Nutrition and Food Security Research CenterIsfahan University of Medical SciencesIsfahanIran
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10
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Marullo AL, O'Halloran KD. Microbes, metabolites and muscle: Is the gut-muscle axis a plausible therapeutic target in Duchenne muscular dystrophy? Exp Physiol 2023; 108:1132-1143. [PMID: 37269541 PMCID: PMC10988500 DOI: 10.1113/ep091063] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 05/17/2023] [Indexed: 06/05/2023]
Abstract
NEW FINDINGS What is the topic of this review? The contribution of gut microbial signalling to skeletal muscle maintenance and development and identification of potential therapeutic targets in progressive muscle degenerative diseases such as Duchenne muscular dystrophy. What advances does it highlight? Gut microbe-derived metabolites are multifaceted signalling molecules key to muscle function, modifying pathways contributing to skeletal muscle wasting, making them a plausible target for adjunctive therapy in muscular dystrophy. ABSTRACT Skeletal muscle is the largest metabolic organ making up ∼50% of body mass. Because skeletal muscle has both metabolic and endocrine properties, it can manipulate the microbial populations within the gut. In return, microbes exert considerable influence on skeletal muscle via numerous signalling pathways. Gut bacteria produce metabolites (i.e., short chain fatty acids, secondary bile acids and neurotransmitter substrates) that act as fuel sources and modulators of inflammation, influencing host muscle development, growth and maintenance. The reciprocal interactions between microbes, metabolites and muscle establish a bidirectional gut-muscle axis. The muscular dystrophies constitute a broad range of disorders with varying disabilities. In the profoundly debilitating monogenic disorder Duchenne muscular dystrophy (DMD), skeletal muscle undergoes a reduction in muscle regenerative capacity leading to progressive muscle wasting, resulting in fibrotic remodelling and adipose infiltration. The loss of respiratory muscle in DMD culminates in respiratory insufficiency and eventually premature death. The pathways contributing to aberrant muscle remodelling are potentially modulated by gut microbial metabolites, thus making them plausible targets for pre- and probiotic supplementation. Prednisone, the gold standard therapy for DMD, drives gut dysbiosis, inducing a pro-inflammatory phenotype and leaky gut barrier contributing to several of the well-known side effects associated with chronic glucocorticoid treatment. Several studies have observed that gut microbial supplementation or transplantation exerts positive effects on muscle, including mitigating the side effects of prednisone. There is growing evidence in support of the potential for an adjunctive microbiota-directed regimen designed to optimise gut-muscle axis signalling, which could alleviate muscle wasting in DMD.
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Affiliation(s)
- Anthony L. Marullo
- Department of Physiology, School of Medicine, College of Medicine and HealthUniversity College CorkCorkIreland
| | - Ken D. O'Halloran
- Department of Physiology, School of Medicine, College of Medicine and HealthUniversity College CorkCorkIreland
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11
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Ashkar F, Wu J. Effects of Food Factors and Processing on Protein Digestibility and Gut Microbiota. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37267055 DOI: 10.1021/acs.jafc.3c00442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Protein is an essential macronutrient. The nutritional needs of dietary proteins are met by digestion and absorption in the small intestine. Indigestible proteins are further metabolized in the gut and produce metabolites via protein fermentation. Thus, protein indigestibility exerts a wide range of effects on gut microbiota composition and function. This review aims to discuss protein digestibility, the effects of food factors, such as protein sources, intake level, and amino acid composition, and making meat analogues. Besides, it provides an inventory of antinutritional factors and processing techniques that influence protein digestibility and, consequently, the diversity and composition of intestinal microbiota. Future studies are warranted to understand the implication of plant-based analogues on protein digestibility and gut microbiota and to elucidate the mechanisms concerning protein digestibility to host gut microbiota using various omics techniques.
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Affiliation(s)
- Fatemeh Ashkar
- Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2R3, Canada
| | - Jianping Wu
- Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2R3, Canada
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12
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Zhao J, Liang R, Song Q, Song S, Yue J, Wu C. Investigating association between gut microbiota and sarcopenia-related traits: a Mendelian randomization study. PRECISION CLINICAL MEDICINE 2023; 6:pbad010. [PMID: 37324750 PMCID: PMC10263384 DOI: 10.1093/pcmedi/pbad010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 05/17/2023] [Indexed: 06/17/2023] Open
Abstract
Background Observational studies have indicated a potential link between gut microbiota and sarcopenia. However, the underlying mechanisms and a causal relationship have not been established. Thus, the objective of this study is to examine the possible causal association between gut microbiota and sarcopenia-related traits, including low hand-grip strength and appendicular lean mass (ALM), to shed light on the gut-muscle axis. Methods To investigate the potential impact of gut microbiota on low hand-grip strength and ALM, we utilized a two-sample Mendelian randomization (MR) approach. Summary statistics were obtained from genome-wide association studies of gut microbiota, low hand-grip strength, and ALM. The primary MR analysis employed the random-effects inverse-variance weighted (IVW) method. To assess the robustness, we conducted sensitivity analyses using the MR pleiotropy residual sum and outlier (MR-PRESSO) test to detect and correct for horizontal pleiotropy, as well as the MR-Egger intercept test and leave-one-out analysis. Results Alcaligenaceae, Family XIII, and Paraprevotella were positively associated with the risk of low hand-grip strength (P-values < 0.05). Streptococcaceae were negatively associated with low hand-grip strength (P-values < 0.05). Eight bacterial taxa (Actinomycetales, Actinomycetaceae, Bacteroidaceae, Porphyromonadaceae, Prevotellaceae, Bacteroides, Marvinbryantia, and Phascolarctobacterium) were associated with a higher risk of ALM (P-values < 0.05). Eubacterium fissicatena group was negatively associated with ALM (P-values < 0.05). Conclusion We found several gut microbiota components causally associated with sarcopenia-related traits. Our findings provided insights into novel strategies for the prevention and treatment of sarcopenia through the regulation of the gut microbiota, contributing to a better understanding of the gut-muscle axis.
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Affiliation(s)
- Jiaxi Zhao
- General Practice Ward/International Medical Center Ward, General Practice Medical Center, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Rui Liang
- Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Quhong Song
- Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Shiyu Song
- Center for Translational Medicine and Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing 210008, Jiangsu, China
| | | | - Chenkai Wu
- Global Health Research Center Duke Kunshan University, Suzhou 215004, Jiangsu, China
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13
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Xiong W, Jiang X, He J, Liu X, Zhu Y, Liu B, Huang Y. Probiotic Fermentation of Kelp Enzymatic Hydrolysate Promoted its Anti-Aging Activity in D-Galactose-Induced Aging Mice by Modulating Gut Microbiota. Mol Nutr Food Res 2023; 67:e2200766. [PMID: 37005336 DOI: 10.1002/mnfr.202200766] [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: 11/05/2022] [Revised: 03/07/2023] [Indexed: 03/19/2023]
Abstract
SCOPE To investigate anti-aging effects of probiotic-fermented kelp enzymatic hydrolysate culture (KMF), probiotic-fermented kelp enzymatic hydrolysate supernatant (KMFS), and probiotic-fermented kelp enzymatic hydrolysate bacteria suspension (KMFP) in D-galactose-induced aging mice. METHODS AND RESULTS The study uses a probiotic-mixture of Lactobacillus reuteri, Pediococcus pentosaceus, and Lactobacillus acidophilus strains for kelp fermentation. KMF, KMFS, and KMFP prevent D-galactose-induced elevation of malondialdehyde levels in serum and brain tissue of aging mice, and they increase superoxide dismutase and catalase levels and total antioxidant capacity. Furthermore, they improve the cell structure of mouse brain, liver, and intestinal tissue. Compared with the model control group, the KMF, KMFS, and KMFP treatments regulate mRNA and protein levels of genes associated with aging, the concentrations of acetic acid, propionic acid, and butyric acid in the three treatment groups are more than 1.4-, 1.3-, and 1.2-fold increased, respectively. Furthermore, the treatments affect the gut microbiota community structures. CONCLUSIONS These results suggest that KMF, KMFS, and KMFP can modulate gut microbiota imbalances and positively affect aging-related genes to achieve anti-aging effects.
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Affiliation(s)
- Wenyu Xiong
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
- Engineering Research Center of Fujian and Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou, 350002, China
- Fuzhou Ocean Research Institute Marine Food Research and Development Center, Fuzhou, 350002, China
| | - Xiaoqin Jiang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
- Engineering Research Center of Fujian and Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou, 350002, China
- Fuzhou Ocean Research Institute Marine Food Research and Development Center, Fuzhou, 350002, China
| | - Junqiang He
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
- Engineering Research Center of Fujian and Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou, 350002, China
- Fuzhou Ocean Research Institute Marine Food Research and Development Center, Fuzhou, 350002, China
| | - Xiaoyan Liu
- Beijing Engineering and Technology Research Center of Food Additives, School of Food and Health, Beijing Technology and Business University, Beijing, 100048, China
| | - Yuxian Zhu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
- Engineering Research Center of Fujian and Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou, 350002, China
- Fuzhou Ocean Research Institute Marine Food Research and Development Center, Fuzhou, 350002, China
| | - Bin Liu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
- Engineering Research Center of Fujian and Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou, 350002, China
- Fuzhou Ocean Research Institute Marine Food Research and Development Center, Fuzhou, 350002, China
| | - Ying Huang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
- Engineering Research Center of Fujian and Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou, 350002, China
- Fuzhou Ocean Research Institute Marine Food Research and Development Center, Fuzhou, 350002, China
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14
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Duan Y, Qi Q, Cui Y, Yang L, Zhang M, Liu H. Effects of dietary diversity on frailty in Chinese older adults: a 3-year cohort study. BMC Geriatr 2023; 23:141. [PMID: 36918767 PMCID: PMC10012609 DOI: 10.1186/s12877-023-03875-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 03/06/2023] [Indexed: 03/16/2023] Open
Abstract
BACKGROUND Frailty has emerged as a global health burden with increased population aging. A diverse diet is essential for an adequate and balanced supply of nutrients. However, limited evidence supports the relationship between dietary diversity and frailty. We therefore assessed the associations of dietary diversity with the risk of frailty. METHODS We used the Chinese Longitudinal Healthy Longevity Survey to analyze a prospective cohort of Chinese older adults. A total of 1948 non-frail older adults were included in the final sample. Participants were categorized into groups with high or low dietary diversity scores (DDSs) using a food frequency questionnaire. A Generalized Estimating Equation were used to estimate risk ratios (RRs) and 95% confidence intervals (CIs) for determining frailty incidence. RESULTS Among 1,948 participants, 381 had frailty with the prevalence of 19.56% during the 3-year follow-up period. Compared with the low DDS group, the high DDS group exhibited a lower risk of frailty (RR, 0.72; 95% CI: 0.57-0.91). Compared with those with a consistently low DDS, the RR of participants with a consistently high DDS for frailty was 0.56 (95% CI: 0.42-0.74). Moreover, meat, beans, fish, nuts, fresh fruits, and fresh vegetables were inversely associated with frailty. In stratified analysis, a consistently high DDS, compared with a consistently low DDS, reduced the risk of frailty for people aged 65-79 years and those living in town and rural areas. CONCLUSION This study found a prospective association between dietary diversity and frailty among Chinese older adults. These findings stressed that it is important to improve dietary diversity for older adults to promote healthy ageing, particularly for young older adults and in town and rural areas.
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Affiliation(s)
- Ying Duan
- School of Public Health, Bengbu Medical College, No.2600 Donghai Ave, Bengbu, 233030, China
| | - Qi Qi
- School of Public Health, Bengbu Medical College, No.2600 Donghai Ave, Bengbu, 233030, China
| | - Yan Cui
- School of Public Health, Bengbu Medical College, No.2600 Donghai Ave, Bengbu, 233030, China
| | - Ling Yang
- School of Public Health, Bengbu Medical College, No.2600 Donghai Ave, Bengbu, 233030, China
| | - Min Zhang
- School of Health Management, Bengbu Medical College, Bengbu, Anhui, China
| | - Huaqing Liu
- School of Public Health, Bengbu Medical College, No.2600 Donghai Ave, Bengbu, 233030, China.
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15
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Morwani-Mangnani J, Giannos P, Belzer C, Beekman M, Eline Slagboom P, Prokopidis K. Gut microbiome changes due to sleep disruption in older and younger individuals: a case for sarcopenia? Sleep 2022; 45:6743463. [PMID: 36183306 PMCID: PMC9742900 DOI: 10.1093/sleep/zsac239] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/09/2022] [Indexed: 11/05/2022] Open
Abstract
Major hallmarks of functional loss, loss of metabolic and musculoskeletal health and (multi)morbidity with aging are associated with sleep disturbances. With poor sleep shifts in gut microbial composition commonly manifest, which could mediate the pro-inflammatory state between sleep disturbances and sarcopenia. This systematic review presents the recent evidence on how sleep disturbances throughout the lifespan associate with and contribute to gut microbial composition changes, proposing a mechanism to understand the etiology of sarcopenia through sleep disturbances. The relationship between disturbed sleep and clinically relevant gut microbiota composition on health aspects of aging is discussed. A search was performed in PubMed, Cochrane Library, Scopus, Web of Science using keywords including (microbio* OR microflora) AND (sleep OR sleep disorder). Six cross-sectional population-based studies and five experimental clinical trials investigating healthy individuals with ages ranging from 4 to 71 were included. The cross-sectional studies reported similarities in associations with sleep disturbance and gut microbial diversity. In older adults, shorter sleep duration is associated with an increase in pro-inflammatory bacteria whereas increasing sleep quality is positively associated with an increase of beneficial Verrucomicrobia and Lentisphaerae phyla. In young adults, the effect of sleep disruption on gut microbiome composition, specifically the ratio of beneficial Firmicutes over Bacteroidetes phyla, remains contradictory and unclear. The findings of this review warrant further research in the modulation of the gut microbiome linking poor sleep with muscle-catabolic consequences throughout the lifespan.
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Affiliation(s)
- Jordi Morwani-Mangnani
- Section of Molecular Epidemiology, Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands
| | - Panagiotis Giannos
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, UK
| | - Clara Belzer
- Laboratory of Microbiology, Wageningen University, Wageningen, The Netherlands
| | - Marian Beekman
- Section of Molecular Epidemiology, Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands
| | - P Eline Slagboom
- Section of Molecular Epidemiology, Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, The Netherlands
| | - Konstantinos Prokopidis
- Department of Musculoskeletal Biology, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
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16
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Boytar AN, Nitert MD, Morrision M, Skinner TL, Jenkins DG. Exercise-induced changes to the human gut microbiota and implications for colorectal cancer: a narrative review. J Physiol 2022; 600:5189-5201. [PMID: 36369926 PMCID: PMC10099575 DOI: 10.1113/jp283702] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 10/18/2022] [Indexed: 11/15/2022] Open
Abstract
Physical activity is associated with reduced risks of colorectal cancer (CRC) incidence, recurrence and mortality. While these findings are consistent, the mechanism/s underlying this association remain unclear. Growing evidence supports the many ways in which differing characteristics of the gut microbiota can be tumourigenic or protective against CRC. CRC is characterised by significant dysbiosis including reduced short chain fatty acid-producing bacteria. Recent findings suggest that exercise can modify the gut microbiota, and these changes are inverse to the changes seen with CRC; however, this exercise-microbiota interaction is currently understudied in CRC. This review summarises parallel areas of research that are rapidly developing: The exercise-gut microbiota research and cancer-gut microbiota research and highlights the salient similarities. Preliminary evidence suggests that these areas are linked, with exercise mediating changes that promote the antitumorigenic characteristics of the gut microbiota. Future mechanistic and population-specific studies are warranted to confirm the physiological mechanism/s by which exercise changes the gut microbiota, and the influence of the exercise-gut interaction on cancer specific outcomes in CRC.
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Affiliation(s)
- Alexander N Boytar
- School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, Australia
| | - Marloes Dekker Nitert
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Mark Morrision
- The University of Queensland Diamantina Institute, Faculty of Medicine, Translational Research Institute, The University of Queensland, Brisbane, Australia
| | - Tina L Skinner
- School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, Australia
| | - David G Jenkins
- School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, Australia.,University of the Sunshine Coast, Maroochydore, Australia.,Applied Sports Science Technology and Medicine Research Centre, Swansea University, Wales, UK
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17
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Abstract
Diet has a profound impact on the microbial community in the gastrointestinal tract, the intestinal microbiota, to the benefit or detriment of human health. To understand the influence of diet on the intestinal microbiota, research has focused on individual macronutrients. Some macronutrients (e.g. fiber) have been studied in great detail and have been found to strongly influence the intestinal microbiota. The relationship between dietary protein, a vital macronutrient, and the intestinal microbiota has gone largely unexplored. Emerging evidence suggests that dietary protein strongly impacts intestinal microbiota composition and function and that protein-microbiota interactions can have critical impacts on host health. In this review, we focus on recent studies investigating the impact of dietary protein quantity and source on the intestinal microbiota and resulting host health consequences. We highlight major open questions critical to understanding health outcomes mediated by interactions between dietary protein and the microbiota.
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Affiliation(s)
- Alexandria Bartlett
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh NC, USA
- Department of Molecular Genetics and Microbiology, Duke University, Durham NC, USA
- Corresponding author
| | - Manuel Kleiner
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh NC, USA
- Corresponding author
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18
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Zhang T, Cheng JK, Hu YM. Gut microbiota as a promising therapeutic target for age-related sarcopenia. Ageing Res Rev 2022; 81:101739. [PMID: 36182084 DOI: 10.1016/j.arr.2022.101739] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 08/30/2022] [Accepted: 09/25/2022] [Indexed: 01/31/2023]
Abstract
Sarcopenia is characterized by a progressive loss of skeletal muscle mass and function with aging. Recently, sarcopenia has been shown to be closely related with gut microbiota. Strategies such as probiotics and fecal microbiota transplantation have shown potential to ameliorate the muscle loss. This review will focus on the age-related sarcopenia, in particular on the relationship between gut microbiota and age-related sarcopenia, how gut microbiota is engaged in sarcopenia, and the potential role of gut microbiota in the treatment of age-related sarcopenia.
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Affiliation(s)
- Ting Zhang
- Department of Geriatrics, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China
| | - Jin-Ke Cheng
- State Key Laboratory of Oncogenes and Related Genes, Renji Hospital Affiliated, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Department of Biochemistry and Molecular Cell Biology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yao-Min Hu
- Department of Geriatrics, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China.
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19
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Yin Y, Guo Q, Zhou X, Duan Y, Yang Y, Gong S, Han M, Liu Y, Yang Z, Chen Q, Li F. Role of brain-gut-muscle axis in human health and energy homeostasis. Front Nutr 2022; 9:947033. [PMID: 36276808 PMCID: PMC9582522 DOI: 10.3389/fnut.2022.947033] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 09/02/2022] [Indexed: 11/26/2022] Open
Abstract
The interrelationship between brain, gut and skeletal muscle plays a key role in energy homeostasis of the body, and is becoming a hot topic of research. Intestinal microbial metabolites, such as short-chain fatty acids (SCFAs), bile acids (BAs) and tryptophan metabolites, communicate with the central nervous system (CNS) by binding to their receptors. In fact, there is a cross-talk between the CNS and the gut. The CNS, under the stimulation of pressure, will also affect the stability of the intestinal system, including the local intestinal transport, secretion and permeability of the intestinal system. After the gastrointestinal tract collects information about food absorption, it sends signals to the central system through vagus nerve and other channels to stimulate the secretion of brain-gut peptide and produce feeding behavior, which is also an important part of maintaining energy homeostasis. Skeletal muscle has receptors for SCFAs and BAs. Therefore, intestinal microbiota can participate in skeletal muscle energy metabolism and muscle fiber conversion through their metabolites. Skeletal muscles can also communicate with the gut system during exercise. Under the stimulation of exercise, myokines secreted by skeletal muscle causes the secretion of intestinal hormones, and these hormones can act on the central system and affect food intake. The idea of the brain-gut-muscle axis is gradually being confirmed, and at present it is important for regulating energy homeostasis, which also seems to be relevant to human health. This article focuses on the interaction of intestinal microbiota, central nervous, skeletal muscle energy metabolism, and feeding behavior regulation, which will provide new insight into the diagnostic and treatment strategies for obesity, diabetes, and other metabolic diseases.
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Affiliation(s)
- Yunju Yin
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, China
| | - Qiuping Guo
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, China
| | - Xihong Zhou
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, China
| | - Yehui Duan
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, China
| | - Yuhuan Yang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, China
| | - Saiming Gong
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, China
| | - Mengmeng Han
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yating Liu
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Zhikang Yang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Qinghua Chen
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
| | - Fengna Li
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
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20
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Wang Y, Zhang Y, Lane NE, Wu J, Yang T, Li J, He H, Wei J, Zeng C, Lei G. Population-based metagenomics analysis reveals altered gut microbiome in sarcopenia: data from the Xiangya Sarcopenia Study. J Cachexia Sarcopenia Muscle 2022; 13:2340-2351. [PMID: 35851765 PMCID: PMC9530518 DOI: 10.1002/jcsm.13037] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/02/2022] [Accepted: 05/30/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Several studies have examined gut microbiota and sarcopenia using 16S ribosomal RNA amplicon sequencing; however, this technique may not be able to identify altered specific species and functional capacities of the microbes. We performed shotgun metagenomic sequencing to compare the gut microbiome composition and function between individuals with and without sarcopenia. METHODS Participants were from a community-based observational study conducted among the residents of rural areas in China. Appendicular skeletal muscle mass was assessed using direct segmental multi-frequency bioelectrical impedance and grip strength using a Jamar Hydraulic Hand dynamometer. Physical performance was evaluated using the Short Physical Performance Battery, 5-time chair stand test and gait speed with the 6 m walk test. Sarcopenia and its severity were diagnosed according to the Asian Working Group for Sarcopenia 2019 algorithm. The gut microbiome was profiled by shotgun metagenomic sequencing to determine the microbial composition and function. A gut microbiota-based model for classification of sarcopenia was constructed using the random forest model, and its performance was assessed using the area under receiver-operating characteristic curve (AUC). RESULTS The study sample included 1417 participants (women: 58.9%; mean age: 63.3 years; sarcopenia prevalence: 10.0%). β-diversity indicated by Bray-Curtis distance (genetic level: P = 0.004; taxonomic level of species: P = 0.020), but not α-diversity indicated by Shannon index (genetic level: P = 0.962; taxonomic level of species: P = 0.922), was significantly associated with prevalent sarcopenia. After adjusting for potential confounders, participants with sarcopenia had higher relative abundance of Desulfovibrio piger (P = 0.003, Q = 0.090), Clostridium symbiosum (P < 0.001, Q = 0.035), Hungatella effluvii (P = 0.003, Q = 0.090), Bacteroides fluxus (P = 0.002, Q = 0.089), Absiella innocuum (P = 0.002, Q = 0.072), Coprobacter secundus (P = 0.002, Q = 0.085) and Clostridium citroniae (P = 0.001, Q = 0.060) than those without sarcopenia. The relative abundance of six species (Desulfovibrio piger, Clostridium symbiosum, Hungatella effluvii, Bacteroides fluxus, Absiella innocuum, and Clostridium citroniae) was also positively associated with sarcopenia severity. A differential species-based model was constructed to separate participants with sarcopenia from controls. The value of the AUC was 0.852, suggesting that model has a decent discriminative performance. Desulfovibrio piger ranked the highest in this model. Functional annotation analysis revealed that the phenylalanine, tyrosine, and tryptophan biosynthesis were depleted (P = 0.006, Q = 0.071), while alpha-Linolenic acid metabolism (P = 0.008, Q = 0.094), furfural degradation (P = 0.001, Q = 0.029) and staurosporine biosynthesis (P = 0.006, Q = 0.072) were enriched in participants with sarcopenia. Desulfovibrio piger was significantly associated with staurosporine biosynthesis (P < 0.001). CONCLUSIONS This large population-based observational study provided empirical evidence that alterations in the gut microbiome composition and function were observed among individuals with sarcopenia.
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Affiliation(s)
- Yilun Wang
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yuqing Zhang
- Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.,The Mongan Institute, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Nancy E Lane
- Division of Rheumatology, Allergy and Clinical Immunology, Department of Medicine, University of California, Davis, CA, USA
| | - Jing Wu
- Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, Hunan, China
| | - Tuo Yang
- Health Management Center, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jiatian Li
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hongyi He
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jie Wei
- Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, Hunan, China.,Health Management Center, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chao Zeng
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, Hunan, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Guanghua Lei
- Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, Hunan, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
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21
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Li G, Jin B, Fan Z. Mechanisms Involved in Gut Microbiota Regulation of Skeletal Muscle. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:2151191. [PMID: 35633886 PMCID: PMC9132697 DOI: 10.1155/2022/2151191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/03/2022] [Indexed: 12/12/2022]
Abstract
Skeletal muscle is one of the largest organs in the body and is essential for maintaining quality of life. Loss of skeletal muscle mass and function can lead to a range of adverse consequences. The gut microbiota can interact with skeletal muscle by regulating a variety of processes that affect host physiology, including inflammatory immunity, protein anabolism, energy, lipids, neuromuscular connectivity, oxidative stress, mitochondrial function, and endocrine and insulin resistance. It is proposed that the gut microbiota plays a role in the direction of skeletal muscle mass and work. Even though the notion of the gut microbiota-muscle axis (gut-muscle axis) has been postulated, its causal link is still unknown. The impact of the gut microbiota on skeletal muscle function and quality is described in detail in this review.
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Affiliation(s)
- Guangyao Li
- Department of General Surgery, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
- Department of Central Laboratory, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
| | - Binghui Jin
- Department of General Surgery, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
- Department of Central Laboratory, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
| | - Zhe Fan
- Department of General Surgery, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
- Department of Central Laboratory, The Third People's Hospital of Dalian, Dalian Medical University, Dalian, China
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22
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Graybeal AJ, Kreutzer A, Willis JL, Moss K, Braun-Trocchio R, Shah M. Age Drives the Differences in Dietary Supplement Use in Endurance Athletes: A Cross-Sectional Analysis of Cyclists, Runners, and Triathletes. J Diet Suppl 2022:1-19. [DOI: 10.1080/19390211.2022.2056670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Austin J. Graybeal
- School of Kinesiology & Nutrition, College of Education and Human Sciences, University of Southern Mississippi, Hattiesburg, MS, USA
| | - Andreas Kreutzer
- Department of Kinesiology, Harris College of Nursing & Health Sciences, Texas Christian University, Fort Worth, TX, USA
| | - Jada L. Willis
- Department of Nutritional Sciences, College of Science & Engineering, Texas Christian University, Fort Worth, TX, USA
| | - Kamiah Moss
- Department of Kinesiology, Harris College of Nursing & Health Sciences, Texas Christian University, Fort Worth, TX, USA
| | - Robyn Braun-Trocchio
- Department of Kinesiology, Harris College of Nursing & Health Sciences, Texas Christian University, Fort Worth, TX, USA
| | - Meena Shah
- Department of Nutritional Sciences, College of Science & Engineering, Texas Christian University, Fort Worth, TX, USA
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23
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Wang X, Lu S, Fang Z, Wang H, Zhu J, Zhao J, Zhang H, Hong K, Lu W, Chen W. A recommended amount of hydrolyzed protein improves physiological function by regulating gut microbiota in aged mice. Food Res Int 2022; 154:110970. [DOI: 10.1016/j.foodres.2022.110970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 01/13/2022] [Accepted: 01/26/2022] [Indexed: 11/04/2022]
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24
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Sánchez Y Sánchez de la Barquera B, Martínez Carrillo BE, Aguirre Garrido JF, Martínez Méndez R, Benítez Arciniega AD, Valdés Ramos R, Soto Piña AE. Emerging Evidence on the Use of Probiotics and Prebiotics to Improve the Gut Microbiota of Older Adults with Frailty Syndrome: A Narrative Review. J Nutr Health Aging 2022; 26:926-935. [PMID: 36259581 PMCID: PMC9483424 DOI: 10.1007/s12603-022-1842-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 08/22/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND The gut microbiota can impact older adults' health, especially in patients with frailty syndrome. Understanding the association between the gut microbiota and frailty syndrome will help to explain the etiology of age-related diseases. Low-grade systemic inflammation is a factor leading to geriatric disorders, which is known as "inflammaging". Intestinal dysbiosis has a direct relationship with low-grade systemic inflammation because when the natural gut barrier is altered by age or other factors, some microorganisms or their metabolites can cross this barrier and reach the systemic circulation. OBJECTIVES This review had two general goals: first, to describe the characteristics of the gut microbiota associated with age-related diseases, specifically frailty syndrome. The second aim was to identify potential interventions to improve the composition and function of intestinal microbiota, consequently lessening the burden of patients with frailty syndrome. METHODS A search of scientific evidence was performed in PubMed, Science Direct, and Redalyc using keywords such as "frailty", "elderly", "nutrient interventions", "probiotics", and "prebiotics". We included studies reporting the effects of nutrient supplementation on frailty syndrome and older adults. These studies were analyzed to identify novel therapeutic alternatives to improve gut microbiota characteristics as well as subclinical signs related to this condition. RESULTS The gut microbiota participates in many metabolic processes that have an impact on the brain, muscles, and other organs. These processes integrate feedback mechanisms, comprising their respective axis with the intestine and the gut microbiota. Alterations in these associations can lead to frailty. We report a few interventions that demonstrate that prebiotics and probiotics could modulate the gut microbiota in humans. Furthermore, other nutritional interventions could be used in patients with frailty syndrome. CONCLUSION Probiotics and prebiotics may potentially prevent frailty syndrome or improve the quality of life of patients with this disorder. However, there is not enough information about their appropriate doses and periods of administration. Therefore, further investigations are required to determine these factors and improve their efficacy as therapeutic approaches for frailty syndrome.
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Affiliation(s)
- B Sánchez Y Sánchez de la Barquera
- Alexandra Estela Soto Piña, Facultad de Medicina, Universidad Autónoma del Estado de México, Paseo Tollocan esq. Jesús Carranza, Z.C. 50180 Toluca de Lerdo, México; Email address:
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25
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Molinari C, Ruga S, Farghali M, Galla R, Bassiouny A, Uberti F. Preventing c2c12 muscular cells damage combining magnesium and potassium with vitamin D3 and curcumin. J Tradit Complement Med 2021; 11:532-544. [PMID: 34765517 PMCID: PMC8572722 DOI: 10.1016/j.jtcme.2021.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 11/28/2022] Open
Abstract
Background and aim Physical activity is defined as any bodily movement produced by skeletal muscles which causes energy consumption; moderate and constant physical activity is known to be beneficial and to slow the muscle loss process associated with aging. The aim of the present study was to test, in an in vitro exercise model, the biological effects of a new formulation composed of magnesium and potassium combined with vitamin D and curcumin created to support muscle activity and to prevent hypercontraction damage. Experimental procedure C2C12 cells were treated with vitamin D, buffered magnesium bisglycinate, curcumin, and potassium citrate. Cell viability, morpho-functional changes, calcium and magnesium movements, and the main kinases involved in glucose uptake were analyzed. The glycogen level and lactate were also evaluated. Results and conclusion Important results about a positive effect on mitochondrial activity, ATP production, oxygen consumption and in the physiological differentiation of C2C12 cells were obtained. Further experiments were performed under conditions that mimic the biological aspects of strenuous exercise. The combination of magnesium, vitamin D3, curcumin, and potassium citrate revealed beneficial effects on skeletal muscle cells under physiological conditions as well as while mimicking intense activity. In particular, in an in vitro model, they were able to control the hypercontraction, restoring ion fluxes, reducing inflammation signaling and supporting the main mechanism involved on aerobic activity. Our results have indicated for the first time that this new combination could be considered as a new nutraceutical formulation to improve physical performance and muscle recovery.
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Affiliation(s)
- Claudio Molinari
- Laboratory of Physiology, Department of Translational Medicine, University of Piemonte Orientale, via Solaroli 17, 28100, Novara, Italy
| | - Sara Ruga
- Laboratory of Physiology, Department of Translational Medicine, University of Piemonte Orientale, via Solaroli 17, 28100, Novara, Italy
| | - Mahitab Farghali
- Laboratory of Physiology, Department of Translational Medicine, University of Piemonte Orientale, via Solaroli 17, 28100, Novara, Italy
| | - Rebecca Galla
- Laboratory of Physiology, Department of Translational Medicine, University of Piemonte Orientale, via Solaroli 17, 28100, Novara, Italy
| | - Ahmad Bassiouny
- Department of Biochemistry, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Francesca Uberti
- Laboratory of Physiology, Department of Translational Medicine, University of Piemonte Orientale, via Solaroli 17, 28100, Novara, Italy
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26
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Wang X, Wu M. Research progress of gut microbiota and frailty syndrome. Open Med (Wars) 2021; 16:1525-1536. [PMID: 34712824 PMCID: PMC8511967 DOI: 10.1515/med-2021-0364] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 07/27/2021] [Accepted: 08/23/2021] [Indexed: 12/30/2022] Open
Abstract
Frailty is a clinical syndrome caused by homeostasis imbalance. It is characterized by marked vulnerability to endogenous or exogenous stressors, reduced self-care ability, and increased mortality risk. This aging-related syndrome is common in individuals older than 65 years and carries an increased risk for poor health outcomes. These include falls, incident disability, incapacity, and mortality. In addition, it can result in a poor prognosis for other comorbidities. With the aging population, frailty increases the burden of adverse health outcomes. Studies on frailty are at their infancy. In addition, there is a lack of thorough understanding of its pathogenesis. Several studies have suggested that frailty is caused by chronic inflammation due to enhanced intestinal permeability following gut microbiota imbalance as well as pathogen-related antibodies entering the circulation system. These result in musculoskeletal system disorders and neurodegenerative diseases. However, this assumption has not been validated in large cohort-based studies. Several studies have suggested that inflammation is not the only cause of frailty. Hence, further studies are necessary to extend our understanding of its pathogenesis. This review summarizes the research findings in the field and expands on the possible role of the gut microbiota in frailty syndrome.
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Affiliation(s)
- Xiao Wang
- Geriatrics Department, Zhejiang Hospital, Hangzhou 310013, China
| | - Min Wu
- Geriatrics Department, Zhejiang Hospital, Hangzhou 310013, China
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27
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Pohl A, Schünemann F, Bersiner K, Gehlert S. The Impact of Vegan and Vegetarian Diets on Physical Performance and Molecular Signaling in Skeletal Muscle. Nutrients 2021; 13:3884. [PMID: 34836139 PMCID: PMC8623732 DOI: 10.3390/nu13113884] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 12/12/2022] Open
Abstract
Muscular adaptations can be triggered by exercise and diet. As vegan and vegetarian diets differ in nutrient composition compared to an omnivorous diet, a change in dietary regimen might alter physiological responses to physical exercise and influence physical performance. Mitochondria abundance, muscle capillary density, hemoglobin concentration, endothelial function, functional heart morphology and availability of carbohydrates affect endurance performance and can be influenced by diet. Based on these factors, a vegan and vegetarian diet possesses potentially advantageous properties for endurance performance. Properties of the contractile elements, muscle protein synthesis, the neuromuscular system and phosphagen availability affect strength performance and can also be influenced by diet. However, a vegan and vegetarian diet possesses potentially disadvantageous properties for strength performance. Current research has failed to demonstrate consistent differences of performance between diets but a trend towards improved performance after vegetarian and vegan diets for both endurance and strength exercise has been shown. Importantly, diet alters molecular signaling via leucine, creatine, DHA and EPA that directly modulates skeletal muscle adaptation. By changing the gut microbiome, diet can modulate signaling through the production of SFCA.
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Affiliation(s)
- Alexander Pohl
- Department of Biosciences of Sport Science, Institute of Sport Science, University of Hildesheim, 31141 Hildesheim, Germany; (F.S.); (K.B.); (S.G.)
| | - Frederik Schünemann
- Department of Biosciences of Sport Science, Institute of Sport Science, University of Hildesheim, 31141 Hildesheim, Germany; (F.S.); (K.B.); (S.G.)
| | - Käthe Bersiner
- Department of Biosciences of Sport Science, Institute of Sport Science, University of Hildesheim, 31141 Hildesheim, Germany; (F.S.); (K.B.); (S.G.)
| | - Sebastian Gehlert
- Department of Biosciences of Sport Science, Institute of Sport Science, University of Hildesheim, 31141 Hildesheim, Germany; (F.S.); (K.B.); (S.G.)
- Department for Molecular and Cellular Sports Medicine, German Sports University Cologne, 50933 Cologne, Germany
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28
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Valentino TR, Vechetti IJ, Mobley CB, Dungan CM, Golden L, Goh J, McCarthy JJ. Dysbiosis of the gut microbiome impairs mouse skeletal muscle adaptation to exercise. J Physiol 2021; 599:4845-4863. [PMID: 34569067 DOI: 10.1113/jp281788] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 09/07/2021] [Indexed: 12/12/2022] Open
Abstract
There is emerging evidence of a gut microbiome-skeletal muscle axis. The purpose of this study was to determine if an intact gut microbiome was necessary for skeletal muscle adaptation to exercise. Forty-two 4-month-old female C57BL/6J mice were randomly assigned to untreated (U) or antibiotic-treated (T) non-running controls (CU or CT, respectively) or progressive weighted wheel running (PoWeR, P) untreated (PU) or antibiotic-treated (PT) groups. Antibiotic treatment resulted in disruption of the gut microbiome as indicated by a significant depletion of gut microbiome bacterial species in both CT and PT groups. The training stimulus was the same between PU and PT groups as assessed by weekly (12.35 ± 2.06 vs. 11.09 ± 1.76 km/week, respectively) and total (778.9 ± 130.5 vs. 703.8 ± 112.9 km, respectively) running activity. In response to PoWeR, PT showed less hypertrophy of soleus type 1 and 2a fibres and plantaris type 2b/x fibres compared to PU. The higher satellite cell and myonuclei abundance of PU plantaris muscle after PoWeR was not observed in PT. The fibre-type shift of PU plantaris muscle to a more oxidative type 2a fibre composition following PoWeR was blunted in PT. There was no difference in serum cytokine levels among all groups suggesting disruption of the gut microbiome did not induce systemic inflammation. The results of this study provide the first evidence that an intact gut microbiome is necessary for skeletal muscle adaptation to exercise. KEY POINTS: Dysbiosis of the gut microbiome caused by continuous antibiotic treatment did not affect running activity. Continuous treatment with antibiotics did not result in systemic inflammation as indicated by serum cytokine levels. Gut microbiome dysbiosis was associated with blunted fibre type-specific hypertrophy in the soleus and plantaris muscles in response to progressive weighted wheel running (PoWeR). Gut microbiome dysbiosis was associated with impaired PoWeR-induced fibre-type shift in the plantaris muscle. Gut microbiome dysbiosis was associated with a loss of PoWeR-induced myonuclei accretion in the plantaris muscle.
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Affiliation(s)
- Taylor R Valentino
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, USA.,Center for Muscle Biology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Ivan J Vechetti
- Department of Nutrition and Health Sciences, University of Nebraska - Lincoln, Lincoln, NE, USA
| | | | - Cory M Dungan
- Center for Muscle Biology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Lesley Golden
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - Jensen Goh
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, USA.,Center for Muscle Biology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - John J McCarthy
- Department of Physiology, College of Medicine, University of Kentucky, Lexington, KY, USA.,Center for Muscle Biology, College of Medicine, University of Kentucky, Lexington, KY, USA
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29
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Inflammatory Bowel Disease and Sarcopenia: Its Mechanism and Clinical Importance. J Clin Med 2021; 10:jcm10184214. [PMID: 34575326 PMCID: PMC8470813 DOI: 10.3390/jcm10184214] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 02/07/2023] Open
Abstract
Malnutrition is a major contributor to muscle loss and muscle dysfunction, known as sarcopenia. Malnutrition is common in patients with inflammatory bowel disease (IBD). IBD includes ulcerative colitis (UC) and Crohn’s disease (CD). The number of patients with IBD has recently been increasing. More severe malnutrition is often seen in CD compared to UC, probably due to CD affecting the main site of nutrient absorption, extensive mucosal lesions, fistulas, short bowel syndrome after resection, or obstruction of the gastrointestinal tract. A recent meta-analysis showed the high prevalence of sarcopenia in patients with IBD, and thus sarcopenia is a very important problem for IBD. Although IBD is more common in younger patients, sarcopenia can develop through a variety of mechanisms, including malnutrition, chronic inflammation, increased inflammatory status in adipose tissue, vitamin deficiency, and imbalance of the muscle–gut axis. In addition, sarcopenia has a negative impact on postoperative complications and hospital stay in patients with IBD. Appropriate intervention for sarcopenia may be important, in addition to clinical remission and endoscopic mucosal healing in patients with IBD. Much more attention will thus be paid to sarcopenia in patients with IBD. In this review, we outline IBD and sarcopenia, based on the current evidence.
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30
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Nardone OM, de Sire R, Petito V, Testa A, Villani G, Scaldaferri F, Castiglione F. Inflammatory Bowel Diseases and Sarcopenia: The Role of Inflammation and Gut Microbiota in the Development of Muscle Failure. Front Immunol 2021; 12:694217. [PMID: 34326845 PMCID: PMC8313891 DOI: 10.3389/fimmu.2021.694217] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 06/28/2021] [Indexed: 12/13/2022] Open
Abstract
Sarcopenia represents a major health burden in industrialized country by reducing substantially the quality of life. Indeed, it is characterized by a progressive and generalized loss of muscle mass and function, leading to an increased risk of adverse outcomes and hospitalizations. Several factors are involved in the pathogenesis of sarcopenia, such as aging, inflammation, mitochondrial dysfunction, and insulin resistance. Recently, it has been reported that more than one third of inflammatory bowel disease (IBD) patients suffered from sarcopenia. Notably, the role of gut microbiota (GM) in developing muscle failure in IBD patient is a matter of increasing interest. It has been hypothesized that gut dysbiosis, that typically characterizes IBD, might alter the immune response and host metabolism, promoting a low-grade inflammation status able to up-regulate several molecular pathways related to sarcopenia. Therefore, we aim to describe the basis of IBD-related sarcopenia and provide the rationale for new potential therapeutic targets that may regulate the gut-muscle axis in IBD patients.
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Affiliation(s)
- Olga Maria Nardone
- Gastroenterology, Department of Clinical Medicine and Surgery, University Federico II of Naples, Naples, Italy
| | - Roberto de Sire
- Gastroenterology, Department of Clinical Medicine and Surgery, University Federico II of Naples, Naples, Italy
| | - Valentina Petito
- Department of Medicine and Translational Surgery, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, University Cattolica del Sacro Cuore, Rome, Italy
| | - Anna Testa
- Gastroenterology, Department of Clinical Medicine and Surgery, University Federico II of Naples, Naples, Italy
| | - Guido Villani
- Gastroenterology, Department of Clinical Medicine and Surgery, University Federico II of Naples, Naples, Italy
| | - Franco Scaldaferri
- Department of Medicine and Translational Surgery, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, University Cattolica del Sacro Cuore, Rome, Italy
| | - Fabiana Castiglione
- Gastroenterology, Department of Clinical Medicine and Surgery, University Federico II of Naples, Naples, Italy
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31
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Ni Lochlainn M, Cox NJ, Wilson T, Hayhoe RPG, Ramsay SE, Granic A, Isanejad M, Roberts HC, Wilson D, Welch C, Hurst C, Atkins JL, Mendonça N, Horner K, Tuttiett ER, Morgan Y, Heslop P, Williams EA, Steves CJ, Greig C, Draper J, Corish CA, Welch A, Witham MD, Sayer AA, Robinson S. Nutrition and Frailty: Opportunities for Prevention and Treatment. Nutrients 2021; 13:2349. [PMID: 34371858 PMCID: PMC8308545 DOI: 10.3390/nu13072349] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/28/2021] [Accepted: 07/07/2021] [Indexed: 02/07/2023] Open
Abstract
Frailty is a syndrome of growing importance given the global ageing population. While frailty is a multifactorial process, poor nutritional status is considered a key contributor to its pathophysiology. As nutrition is a modifiable risk factor for frailty, strategies to prevent and treat frailty should consider dietary change. Observational evidence linking nutrition with frailty appears most robust for dietary quality: for example, dietary patterns such as the Mediterranean diet appear to be protective. In addition, research on specific foods, such as a higher consumption of fruit and vegetables and lower consumption of ultra-processed foods are consistent, with healthier profiles linked to lower frailty risk. Few dietary intervention studies have been conducted to date, although a growing number of trials that combine supplementation with exercise training suggest a multi-domain approach may be more effective. This review is based on an interdisciplinary workshop, held in November 2020, and synthesises current understanding of dietary influences on frailty, focusing on opportunities for prevention and treatment. Longer term prospective studies and well-designed trials are needed to determine the causal effects of nutrition on frailty risk and progression and how dietary change can be used to prevent and/or treat frailty in the future.
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Affiliation(s)
- Mary Ni Lochlainn
- Department of Twin Research and Genetics, King’s College London, St Thomas’ Hospital, Westminster Bridge Road, London SE1 7EH, UK;
| | - Natalie J. Cox
- Academic Geriatric Medicine, Faculty of Medicine, University of Southampton, Tremona Road, Southampton SO17 1BJ, UK; (N.J.C.); (H.C.R.)
- National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
| | - Thomas Wilson
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3DA, UK; (T.W.); (J.D.)
| | - Richard P. G. Hayhoe
- Department of Epidemiology & Public Health, Norwich Medical School, University of East Anglia, Norwich NR4 7TJ, UK; (R.P.G.H.); (A.W.)
- School of Allied Health, Faculty of Health, Education, Medicine and Social Care, Anglia Ruskin University, Chelmsford CM1 1SQ, UK
| | - Sheena E. Ramsay
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne NE2 4AX, UK; (S.E.R.); (N.M.)
| | - Antoneta Granic
- AGE Research Group, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK; (A.G.); (C.H.); (P.H.); (M.D.W.); (A.A.S.)
- NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Masoud Isanejad
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L7 8TX, UK;
| | - Helen C. Roberts
- Academic Geriatric Medicine, Faculty of Medicine, University of Southampton, Tremona Road, Southampton SO17 1BJ, UK; (N.J.C.); (H.C.R.)
- National Institute for Health Research (NIHR) Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton SO16 6YD, UK
| | - Daisy Wilson
- Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (D.W.); (C.W.)
| | - Carly Welch
- Institute of Inflammation and Ageing, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK; (D.W.); (C.W.)
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, University of Birmingham and University of Nottingham, Birmingham B15 2TT, UK;
| | - Christopher Hurst
- AGE Research Group, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK; (A.G.); (C.H.); (P.H.); (M.D.W.); (A.A.S.)
- NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Janice L. Atkins
- Epidemiology & Public Health Group, University of Exeter Medical School, Exeter EX1 2LU, UK;
| | - Nuno Mendonça
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne NE2 4AX, UK; (S.E.R.); (N.M.)
- EpiDoC Unit, CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1150-082 Lisbon, Portugal
- Comprehensive Health Research Centre (CHRC), NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisbon, Portugal
| | - Katy Horner
- School of Public Health, Physiotherapy and Sport Science and UCD Institute of Food and Health, University College Dublin, Belfield, Dublin 4, Ireland; (K.H.); (C.A.C.)
| | - Esme R. Tuttiett
- The Medical Research Council Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing and The Department of Oncology and Metabolism, The University of Sheffield, Sheffield S10 2RX, UK; (E.R.T.); (E.A.W.)
| | - Yvie Morgan
- EDESIA PhD Programme, University of East Anglia Norwich Research Park, Norwich NR4 7TJ, UK;
| | - Phil Heslop
- AGE Research Group, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK; (A.G.); (C.H.); (P.H.); (M.D.W.); (A.A.S.)
| | - Elizabeth A. Williams
- The Medical Research Council Versus Arthritis Centre for Integrated Research into Musculoskeletal Ageing and The Department of Oncology and Metabolism, The University of Sheffield, Sheffield S10 2RX, UK; (E.R.T.); (E.A.W.)
| | - Claire J. Steves
- Department of Twin Research and Genetics, King’s College London, St Thomas’ Hospital, Westminster Bridge Road, London SE1 7EH, UK;
| | - Carolyn Greig
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, University of Birmingham and University of Nottingham, Birmingham B15 2TT, UK;
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham and NIHR Biomedical Research Centre, University Hospitals Birmingham NHS Foundation Trust and University of Birmingham, Birmingham B15 2TT, UK
| | - John Draper
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3DA, UK; (T.W.); (J.D.)
| | - Clare A. Corish
- School of Public Health, Physiotherapy and Sport Science and UCD Institute of Food and Health, University College Dublin, Belfield, Dublin 4, Ireland; (K.H.); (C.A.C.)
| | - Ailsa Welch
- Department of Epidemiology & Public Health, Norwich Medical School, University of East Anglia, Norwich NR4 7TJ, UK; (R.P.G.H.); (A.W.)
| | - Miles D. Witham
- AGE Research Group, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK; (A.G.); (C.H.); (P.H.); (M.D.W.); (A.A.S.)
- NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Avan A. Sayer
- AGE Research Group, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK; (A.G.); (C.H.); (P.H.); (M.D.W.); (A.A.S.)
- NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University, Newcastle upon Tyne NE4 5PL, UK
| | - Sian Robinson
- AGE Research Group, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne NE4 5PL, UK; (A.G.); (C.H.); (P.H.); (M.D.W.); (A.A.S.)
- NIHR Newcastle Biomedical Research Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University, Newcastle upon Tyne NE4 5PL, UK
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Ni Lochlainn M, Nessa A, Sheedy A, Horsfall R, García MP, Hart D, Akdag G, Yarand D, Wadge S, Baleanu AF, Whelan K, Steves C. The PROMOTe study: targeting the gut microbiome with prebiotics to overcome age-related anabolic resistance: protocol for a double-blinded, randomised, placebo-controlled trial. BMC Geriatr 2021; 21:407. [PMID: 34210274 PMCID: PMC8248289 DOI: 10.1186/s12877-021-02301-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 05/26/2021] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND Loss of skeletal muscle mass and strength occurs with increasing age and is associated with loss of function, disability, and the development of sarcopenia and frailty. Dietary protein is essential for skeletal muscle function, but older adults do not anabolise muscle in response to protein supplementation as well as younger people, so called 'anabolic resistance'. The aetiology and molecular mechanisms for this are not understood, however the gut microbiome is known to play a key role in several of the proposed mechanisms. Thus, we hypothesise that the gut microbiome may mediate anabolic resistance and therefore represent an exciting new target for ameliorating muscle loss in older adults. This study aims to test whether modulation of the gut microbiome using a prebiotic, in addition to protein supplementation, can improve muscle strength (as measured by chair-rise time) versus protein supplementation alone. METHODS The study is a randomised, double-blinded, placebo-controlled trial, with two parallel arms; one will receive prebiotic and protein supplementation, and the other will receive placebo (maltodextrin) and protein supplementation. Participants will be randomised as twin pairs, with one twin from each pair in each arm. Participants will be asked to take supplementation once daily for 12 weeks in addition to resistance exercises. Every participant will receive a postal box, containing their supplements, and the necessary equipment to return faecal, urine, saliva and capillary blood samples, via post. A virtual visit will be performed using online platform at the beginning and end of the study, with measures taken over video. Questionnaires, food diary and cognitive testing will be sent out via email at the beginning and end of the study. DISCUSSION This study aims to provide evidence for the role of the gut microbiome in anabolic resistance to dietary protein. If those who take the prebiotic and protein supplementation have a greater improvement in muscle strength compared with those who take protein supplementation alone, this would suggest that strategies to modify the gut microbiome may reduce anabolic resistance, and therefore potentially mitigate sarcopenia and frailty in older adults. TRIAL REGISTRATION Clinicaltrials.gov: NCT04309292 . Registered on the 2nd May 2020.
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Affiliation(s)
- Mary Ni Lochlainn
- Department of Twin Research & Genetic Epidemiology, King's College London, 3rd Floor South Wing, St Thomas' Hospital, SE1 7EH, London, UK.
| | - Ayrun Nessa
- Department of Twin Research & Genetic Epidemiology, King's College London, 3rd Floor South Wing, St Thomas' Hospital, SE1 7EH, London, UK
| | - Alyce Sheedy
- Department of Twin Research & Genetic Epidemiology, King's College London, 3rd Floor South Wing, St Thomas' Hospital, SE1 7EH, London, UK
| | - Rachel Horsfall
- Department of Twin Research & Genetic Epidemiology, King's College London, 3rd Floor South Wing, St Thomas' Hospital, SE1 7EH, London, UK
| | - María Paz García
- Department of Twin Research & Genetic Epidemiology, King's College London, 3rd Floor South Wing, St Thomas' Hospital, SE1 7EH, London, UK
| | - Deborah Hart
- Department of Twin Research & Genetic Epidemiology, King's College London, 3rd Floor South Wing, St Thomas' Hospital, SE1 7EH, London, UK
| | - Gulsah Akdag
- Department of Twin Research & Genetic Epidemiology, King's College London, 3rd Floor South Wing, St Thomas' Hospital, SE1 7EH, London, UK
| | - Darioush Yarand
- Department of Twin Research & Genetic Epidemiology, King's College London, 3rd Floor South Wing, St Thomas' Hospital, SE1 7EH, London, UK
| | - Samuel Wadge
- Department of Twin Research & Genetic Epidemiology, King's College London, 3rd Floor South Wing, St Thomas' Hospital, SE1 7EH, London, UK
| | - Andrei-Florin Baleanu
- Department of Twin Research & Genetic Epidemiology, King's College London, 3rd Floor South Wing, St Thomas' Hospital, SE1 7EH, London, UK
| | - Kevin Whelan
- Department of Nutritional Sciences, King's College London, London, UK
| | - Claire Steves
- Department of Twin Research & Genetic Epidemiology, King's College London, 3rd Floor South Wing, St Thomas' Hospital, SE1 7EH, London, UK
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de Marco Castro E, Murphy CH, Roche HM. Targeting the Gut Microbiota to Improve Dietary Protein Efficacy to Mitigate Sarcopenia. Front Nutr 2021; 8:656730. [PMID: 34235167 PMCID: PMC8256992 DOI: 10.3389/fnut.2021.656730] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 05/24/2021] [Indexed: 12/11/2022] Open
Abstract
Sarcopenia is characterised by the presence of diminished skeletal muscle mass and strength. It is relatively common in older adults as ageing is associated with anabolic resistance (a blunted muscle protein synthesis response to dietary protein consumption and resistance exercise). Therefore, interventions to counteract anabolic resistance may benefit sarcopenia prevention and are of utmost importance in the present ageing population. There is growing speculation that the gut microbiota may contribute to sarcopenia, as ageing is also associated with [1) dysbiosis, whereby the gut microbiota becomes less diverse, lacking in healthy butyrate-producing microorganisms and higher in pathogenic bacteria, and [2) loss of epithelial tight junction integrity in the lining of the gut, leading to increased gut permeability and higher metabolic endotoxemia. Animal data suggest that both elements may impact muscle physiology, but human data corroborating the causality of the association between gut microbiota and muscle mass and strength are lacking. Mechanisms wherein the gut microbiota may alter anabolic resistance include an attenuation of gut-derived low-grade inflammation and/or the increased digestibility of protein-containing foods and consequent higher aminoacidemia, both in favour of muscle protein synthesis. This review focuses on the putative links between the gut microbiota and skeletal muscle in the context of sarcopenia. We also address the issue of plant protein digestibility because plant proteins are increasingly important from an environmental sustainability perspective, yet they are less efficient at stimulating muscle protein synthesis than animal proteins.
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Affiliation(s)
- Elena de Marco Castro
- Nutrigenomics Research Group, School of Public Health, Physiotherapy, and Sports Science, UCD Conway Institute, UCD Institute of Food and Health, University College Dublin, Dublin, Ireland
| | - Caoileann H Murphy
- Nutrigenomics Research Group, School of Public Health, Physiotherapy, and Sports Science, UCD Conway Institute, UCD Institute of Food and Health, University College Dublin, Dublin, Ireland.,Teagasc Food Research Centre, Ashtown, Dublin, Ireland
| | - Helen M Roche
- Nutrigenomics Research Group, School of Public Health, Physiotherapy, and Sports Science, UCD Conway Institute, UCD Institute of Food and Health, University College Dublin, Dublin, Ireland.,Institute for Global Food Security, Queen's University Belfast, Belfast, United Kingdom
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Castro AP, Silva KKS, Medeiros CSA, Alves F, Araujo RC, Almeida JA. Effects of 12 weeks of resistance training on rat gut microbiota composition. J Exp Biol 2021; 224:269165. [PMID: 34137868 DOI: 10.1242/jeb.242543] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 05/17/2021] [Indexed: 12/15/2022]
Abstract
In addition to its health benefits, exercise training has been noted as a modulator of the gut microbiota. However, the effects of resistance training (RT) on gut microbiota composition remain unknown. Wistar rats underwent 12 weeks of RT. Body mass, glucose tolerance, visceral body fat, triglyceride concentration and food consumption were evaluated. The gut microbiota was analyzed by 16S rRNA gene sequencing. Rats that underwent RT showed lower body mass (P=0.0005), lower fat content (P=0.02) and better glucose kinetics (P=0.047) when compared with the control. Improvements in the diversity and composition of the gut microbiota were identified in the RT group. The relative abundance of Pseudomonas, Serratia and Comamonas decreased significantly after 12 weeks of RT (P<0.001). These results suggest that RT has the potential to enhance the diversity of the gut microbiota and improve its biological functions.
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Affiliation(s)
- Alinne P Castro
- Catholic University Dom Bosco, Graduate Program in Biotechnology, Campo Grande, Mato Grosso do Sul 79117-900, Brazil
| | - Keemilyn K S Silva
- Exercise and Nutrition in Health and Sports Performance Research Group - PENSARE, Graduate Program in Movement Sciences, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil
| | - Claudia S A Medeiros
- Graduate Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil
| | - Fernanda Alves
- Catholic University Dom Bosco, Graduate Program in Biotechnology, Campo Grande, Mato Grosso do Sul 79117-900, Brazil
| | - Ronaldo C Araujo
- Department of Biophysics, Federal University of São Paulo, São Paulo 04021-001, Brazil
| | - Jeeser A Almeida
- Exercise and Nutrition in Health and Sports Performance Research Group - PENSARE, Graduate Program in Movement Sciences, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil.,Graduate Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil
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Ozer NT, Akin S, Gunes Sahin G, Sahin S. Prevalence of malnutrition diagnosed by the Global Leadership Initiative on Malnutrition and Mini Nutritional Assessment in older adult outpatients and comparison between the Global Leadership Initiative on Malnutrition and Mini Nutritional Assessment energy-protein intake: A cross-sectional study. JPEN J Parenter Enteral Nutr 2021; 46:367-377. [PMID: 33893657 DOI: 10.1002/jpen.2123] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND The Global Leadership Initiative on Malnutrition (GLIM) published malnutrition identification criteria. The Mini Nutritional Assessment (MNA) is malnutrition assessment tool commonly used in older adults. This study aimed to determine prevalence of malnutrition and the relationship between the GLIM and the MNA long form (MNA-LF) and short form (MNA-SF) and energy-protein intake. METHODS A total of 252 older adult outpatients (aged 68.0 years, 61% females) were included. Malnutrition was defined according to the GLIM, MNA-LF, and MNA-SF. Food intake was assessed using the 24-h dietary recall. We analyzed the cutoff value on the MNA-LF score, MNA-SF score, and energy-protein intake for GLIM criteria-defined malnutrition severity with receiver operating characteristic analysis. RESULTS Malnutrition was present in 32.2%, 12.7%, and 13.1% of patients according to the GLIM criteria, MNA-LF, and MNA-SF, respectively. It was determined that 92.7% and 89.0% of patients, based on GLIM criteria, had malnutrition with the MNA-LF and MNA-SF, respectively. The daily energy-protein intake was less in patients with malnutrition according to GLIM, as in the MNA-LF and MNA-SF classifications (p < .05). For the MNA-LF and MNA-SF score, the cutoff value of 11 and 9 points for severe malnutrition (area under curve [AUC] 0.92; p < .001 and 0.90; p < .001), 22 and 11 points for moderate malnutrition (AUC 0.79; p < .001 and 0.76; p < .001) were determined. CONCLUSION According to GLIM criteria, one-third of outpatient older adults were malnourished, whereas the prevalence was much lower applying both the MNA-LF and the MNA-SF.
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Affiliation(s)
- Nurhayat Tugra Ozer
- Department of Clinical Nutrition, Erciyes School of Medicine, Erciyes University, Kayseri, Turkey
| | - Sibel Akin
- Division of Geriatrics, Department of Internal Medicine, Erciyes School of Medicine, Erciyes University, Kayseri, Turkey
| | - Gulsah Gunes Sahin
- Department of Clinical Nutrition, Erciyes School of Medicine, Erciyes University, Kayseri, Turkey
| | - Serap Sahin
- Department of Clinical Nutrition, Erciyes School of Medicine, Erciyes University, Kayseri, Turkey
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Papageorgiou M, Biver E. Interactions of the microbiome with pharmacological and non-pharmacological approaches for the management of ageing-related musculoskeletal diseases. Ther Adv Musculoskelet Dis 2021; 13:1759720X211009018. [PMID: 34104230 PMCID: PMC8172340 DOI: 10.1177/1759720x211009018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/18/2021] [Indexed: 12/18/2022] Open
Abstract
Despite major progress in the understanding of the pathophysiology and therapeutic options for common ageing-related musculoskeletal conditions (i.e. osteoporosis and associated fractures, sarcopenia and osteoarthritis), there is still a considerable proportion of patients who respond sub optimally to available treatments or experience adverse effects. Emerging microbiome research suggests that perturbations in microbial composition, functional and metabolic capacity (i.e. dysbiosis) are associated with intestinal and extra-intestinal disorders including musculoskeletal diseases. Besides its contributions to disease pathogenesis, the role of the microbiome is further extended to shaping individuals' responses to disease therapeutics (i.e. pharmacomicrobiomics). In this review, we focus on the reciprocal interactions between the microbiome and therapeutics for osteoporosis, sarcopenia and osteoarthritis. Specifically, we identify the effects of therapeutics on microbiome's configurations, functions and metabolic output, intestinal integrity and immune function, but also the effects of the microbiome on the metabolism of these therapeutics, which in turn, may influence their bioavailability, efficacy and side-effect profile contributing to variable treatment responses in clinical practice. We further discuss emerging strategies for microbiota manipulation as preventive or therapeutic (alone or complementary to available treatments) approaches for improving outcomes of musculoskeletal health and disease.
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Affiliation(s)
- Maria Papageorgiou
- Division of Bone Diseases, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Emmanuel Biver
- Division of Bone Diseases, Geneva University Hospitals and Faculty of Medicine, University of Geneva, Rue Gabrielle Perret Gentil 4, Geneva 1205, Switzerland
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Cox NJ, Bowyer RCE, Ni Lochlainn M, Wells PM, Roberts HC, Steves CJ. The composition of the gut microbiome differs among community dwelling older people with good and poor appetite. J Cachexia Sarcopenia Muscle 2021; 12:368-377. [PMID: 33580637 PMCID: PMC8061352 DOI: 10.1002/jcsm.12683] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/07/2020] [Accepted: 01/10/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Anorexia of ageing is common and important in the development of sarcopenia in older individuals. Links have been proposed between the gut microbiota and sarcopenia. Disordered gut function is also recognized in anorexia of ageing, but how this may relate to resident gut microbiota is unexplored. Understanding this relationship may provide a basis for novel interventions for anorexia of ageing and sarcopenia. This study explores compositional differences of the gut microbiota between community dwelling healthy older adults with good or poor appetite, and associated differences in sarcopenia. METHODS We assessed appetite by the Simplified Nutritional Appetite Questionnaire (SNAQ) in members of the TwinsUK cohort aged ≥65 years. Using a pool of 776 individuals with existing microbiome data estimated from 16S rRNA sequencing data, we identified 102 cases (SNAQ score < 14) (95% female, mean age 68 years) matched to controls (SNAQ > 14) on body mass index, gender, age, diet, calorie consumption, frailty, antibiotic use, socio-economic status, and technical variables to minimize confounding microbiota associations. Species abundance and diversity, compositional differences, and paired differences in taxa abundance were compared between cases and controls. Additionally, we compared case and controls for sarcopenia as measured by muscle mass (appendicular lean mass/height2 ) and strength (chair stand time in seconds). RESULTS Cases with poor appetite had reduced species richness and diversity of their gut microbiome (adjusted OBSERVED: beta = -0.2, P < 0.001; adjusted SHANNON: beta = -0.17, P = 0.0135), significant compositional differences (adjusted non-parametric multivariate analysis of variance, P = 0.0095), and significant differences in taxa abundance including reduction of genus Lachnospira (logFC = -1.015, q = 0.023). In all-female subgroup analysis, cases with poor appetite demonstrated reduction in muscle strength (11.03 s vs. 9.26 s, P = 0.02). CONCLUSIONS This study is the first to observe differences in the composition of gut microbiota between healthy community dwelling older individuals with good and poor appetite. We found female individuals with reduced muscle strength had poor appetite compared with those with normal strength. These associations require further examination to understand causality and mechanisms of interaction, to inform potential strategies targeting the gut microbiota as a novel intervention for anorexia of ageing and sarcopenia.
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Affiliation(s)
- Natalie J Cox
- Academic Geriatric Medicine, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, UK.,NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Ruth C E Bowyer
- Department of Twins Research and Genetic Epidemiology, Kings College London, St Thomas' Hospital, London, UK
| | - Mary Ni Lochlainn
- Department of Twins Research and Genetic Epidemiology, Kings College London, St Thomas' Hospital, London, UK
| | - Philippa M Wells
- Department of Twins Research and Genetic Epidemiology, Kings College London, St Thomas' Hospital, London, UK
| | - Helen C Roberts
- Academic Geriatric Medicine, Faculty of Medicine, University of Southampton, Tremona Road, Southampton, UK.,NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK.,NIHR Applied Research Collaboration (ARC) Wessex, Southampton, UK
| | - Claire J Steves
- Department of Twins Research and Genetic Epidemiology, Kings College London, St Thomas' Hospital, London, UK.,Department of Ageing and Health, Guy's and St Thomas' NHS Foundation Trust, London, UK
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38
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Alterations in intestinal microbiota diversity, composition, and function in patients with sarcopenia. Sci Rep 2021; 11:4628. [PMID: 33633246 PMCID: PMC7907362 DOI: 10.1038/s41598-021-84031-0] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 02/08/2021] [Indexed: 02/07/2023] Open
Abstract
16S rRNA sequencing of human fecal samples has been tremendously successful in identifying microbiome changes associated with both aging and disease. A number of studies have described microbial alterations corresponding to physical frailty and nursing home residence among aging individuals. A gut-muscle axis through which the microbiome influences skeletal muscle growth/function has been hypothesized. However, the microbiome has yet to be examined in sarcopenia. Here, we collected fecal samples of 60 healthy controls (CON) and 27 sarcopenic (Case)/possibly sarcopenic (preCase) individuals and analyzed the intestinal microbiota using 16S rRNA sequencing. We observed an overall reduction in microbial diversity in Case and preCase samples. The genera Lachnospira, Fusicantenibacter, Roseburia, Eubacterium, and Lachnoclostridium—known butyrate producers—were significantly less abundant in Case and preCase subjects while Lactobacillus was more abundant. Functional pathways underrepresented in Case subjects included numerous transporters and phenylalanine, tyrosine, and tryptophan biosynthesis suggesting that protein processing and nutrient transport may be impaired. In contrast, lipopolysaccharide biosynthesis was overrepresented in Case and PreCase subjects suggesting that sarcopenia is associated with a pro-inflammatory metagenome. These analyses demonstrate structural and functional alterations in the intestinal microbiota that may contribute to loss of skeletal muscle mass and function in sarcopenia.
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Watson MD, Cross BL, Grosicki GJ. Evidence for the Contribution of Gut Microbiota to Age-Related Anabolic Resistance. Nutrients 2021; 13:706. [PMID: 33672207 PMCID: PMC7926629 DOI: 10.3390/nu13020706] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/08/2021] [Accepted: 02/19/2021] [Indexed: 12/11/2022] Open
Abstract
Globally, people 65 years of age and older are the fastest growing segment of the population. Physiological manifestations of the aging process include undesirable changes in body composition, declines in cardiorespiratory fitness, and reductions in skeletal muscle size and function (i.e., sarcopenia) that are independently associated with mortality. Decrements in muscle protein synthetic responses to anabolic stimuli (i.e., anabolic resistance), such as protein feeding or physical activity, are highly characteristic of the aging skeletal muscle phenotype and play a fundamental role in the development of sarcopenia. A more definitive understanding of the mechanisms underlying this age-associated reduction in anabolic responsiveness will help to guide promyogenic and function promoting therapies. Recent studies have provided evidence in support of a bidirectional gut-muscle axis with implications for aging muscle health. This review will examine how age-related changes in gut microbiota composition may impact anabolic response to protein feeding through adverse changes in protein digestion and amino acid absorption, circulating amino acid availability, anabolic hormone production and responsiveness, and intramuscular anabolic signaling. We conclude by reviewing literature describing lifestyle habits suspected to contribute to age-related changes in the microbiome with the goal of identifying evidence-informed strategies to preserve microbial homeostasis, anabolic sensitivity, and skeletal muscle with advancing age.
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Affiliation(s)
| | | | - Gregory J. Grosicki
- Biodynamics and Human Performance Center, Georgia Southern University (Armstrong Campus), Savannah, GA 31419, USA; (M.D.W.); (B.L.C.)
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Sarcopenia in Inflammatory Bowel Disease: A Narrative Overview. Nutrients 2021; 13:nu13020656. [PMID: 33671473 PMCID: PMC7922969 DOI: 10.3390/nu13020656] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/11/2021] [Accepted: 02/11/2021] [Indexed: 02/06/2023] Open
Abstract
Malnutrition is a common condition encountered in patients with inflammatory bowel disease (IBD) and is often associated with sarcopenia (the reduction of muscle mass and strength) which is an ever-growing consideration in chronic diseases. Recent data suggest the prevalence of sarcopenia is 52% and 37% in Crohn's disease and ulcerative colitis, respectively, however it is challenging to fully appreciate the prevalence of sarcopenia in IBD. Sarcopenia is an important consideration in the management of IBD, including the impact on quality of life, prognostication, and treatment such as surgical interventions, biologics and immunomodulators. There is evolving research in many chronic inflammatory states, such as chronic liver disease and rheumatoid arthritis, whereby interventions have begun to be developed to counteract sarcopenia. The purpose of this review is to evaluate the current literature regarding the impact of sarcopenia in the management of IBD, from mechanistic drivers through to assessment and management.
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Assumpção DD, Francisco PMSB, Borim FSA, Yassuda MS, Neri AL. Which anthropometric measures best identify excess weight in older adults? GERIATRICS, GERONTOLOGY AND AGING 2021. [DOI: 10.53886/gga.e0210051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVES: To estimate the prevalence of and factors associated with excess weight in older adults according to body mass index (BMI), waist circumference (WC) and waist-to-height ratio (WtHR), as well as to measure the differences between the prevalences estimated by WC and WtHR in relation to BMI. METHODS: This cross-sectional study was conducted in 2016 – 2017 with 549 older adults (72–102 years) from Campinas and Ermelino Matarazzo, two cities in the state of São Paulo, Brazil. Excess weight was defined according to cut-off points established for older adults. Multiple Poisson regression analysis was performed. RESULTS: The overweight/obesity prevalences were 47.36% (BMI), 61.38% (WC) and 65.57% (WtHR), being higher in women and in those with hypertension, diabetes, polypharmacy, and normal calf circumference. They were also higher in the youngest age strata (BMI and WC), in those with arthritis/rheumatism (BMI), and in those with slow gait (WtHR). The estimated overweight/obesity prevalences according to WC and WtHR were 29.00% and 38.00% higher, respectively, than BMI. In the multiple model, there was a higher prevalence of adiposity among diabetics and those with normal calf circumference. CONCLUSIONS: Measures of abdominal adiposity provided a better diagnosis of excess weight. We recommended that health professionals consider using WtHR in anthropometric assessment of older adults, especially regarding adiposity.
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Abstract
PURPOSE OF REVIEW Chronic kidney disease (CKD) is highly prevalent in elderly patients. There is growing recognition of the importance of attention to dietary protein intake (DPI) in this population given their predisposition to age-related changes in kidney function and coexisting comorbidities (i.e., hypertension). We reviewed the impact of DPI on kidney health and survival and the role of dietary protein management in older CKD patients. RECENT FINDINGS While kidney function parameters including glomerular filtration rate (GFR) and renal plasma flow are slightly lower in elderly patients irrespective of CKD status, the kidneys' ability to compensate for increased DPI by augmentation of GFR is preserved until 80 years of age or less. However, long-term consumption of high DPI in individuals of older age and/or with CKD may contribute to kidney function deterioration over time. Prescription of a plant-dominant low-protein diet of 0.6-0.8 g/kg/day with more than 50% from plant sources or very low protein diets less than 0.45 g/kg/day supplemented with essential amino acids or their keto-analogues may be effective in preserving kidney function in older patients and their younger counterparts, while also monitoring for development of protein-energy wasting (PEW). SUMMARY Using tailored precision nutrition approaches in prescribing plant-dominant low DPI that also maintains adequate energy and nitrogen balance may ameliorate kidney function decline while also preventing development of PEW in elderly patients with CKD.
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Affiliation(s)
- Yoko Narasaki
- Division of Nephrology, Hypertension and Kidney Transplantation, Harold Simmons Center for Chronic Disease Research and Epidemiology, University of California Irvine, Orange, California
| | - Connie M Rhee
- Division of Nephrology, Hypertension and Kidney Transplantation, Harold Simmons Center for Chronic Disease Research and Epidemiology, University of California Irvine, Orange, California
| | - Holly Kramer
- Department of Public Health Sciences
- Department of Medicine, Loyola University Chicago Stritch School of Medicine, Maywood
- Hines VA Medical Center, Hines, Illinois, USA
| | - Kamyar Kalantar-Zadeh
- Division of Nephrology, Hypertension and Kidney Transplantation, Harold Simmons Center for Chronic Disease Research and Epidemiology, University of California Irvine, Orange, California
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Abstract
Aging is characterized by the functional decline of tissues and organs and increased risk of aging-associated disorders, which pose major societal challenges and are a public health priority. Despite extensive human genetics studies, limited progress has been made linking genetics with aging. There is a growing realization that the altered assembly, structure and dynamics of the gut microbiota actively participate in the aging process. Age-related microbial dysbiosis is involved in reshaping immune responses during aging, which manifest as immunosenescence (insufficiency) and inflammaging (over-reaction) that accompany many age-associated enteric and extraenteric diseases. The gut microbiota can be regulated, suggesting a potential target for aging interventions. This review summarizes recent findings on the physiological succession of gut microbiota across the life-cycle, the roles and mechanisms of gut microbiota in healthy aging, alterations of gut microbiota and aging-associated diseases, and the gut microbiota-targeted anti-aging strategies.
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Affiliation(s)
- Zongxin Ling
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xia Liu
- Department of Intensive Care Unit, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yiwen Cheng
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xiumei Yan
- Department of Geriatrics, Lishui Second People's Hospital, Lishui, Zhejiang, China
| | - Shaochang Wu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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Liao X, Wu M, Hao Y, Deng H. Exploring the Preventive Effect and Mechanism of Senile Sarcopenia Based on "Gut-Muscle Axis". Front Bioeng Biotechnol 2020; 8:590869. [PMID: 33251202 PMCID: PMC7674676 DOI: 10.3389/fbioe.2020.590869] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/09/2020] [Indexed: 12/11/2022] Open
Abstract
Age-related sarcopenia probably leads to chronic systemic inflammation and plays a vital role in the development of the complications of the disease. Gut microbiota, an environmental factor, is the medium of nutritional support to muscle cells, having significant impact on sarcopenia. Consequently, a significant amount of studies explored and showed the presence of gut microbiome–muscle axis (gut–muscle axis for short), which was possibly considered as the disease interventional target of age-related sarcopenia. However, a variety of nutrients probably affect the changes of the gut–muscle axis so as to affect the healthy balance of skeletal muscle. Therefore, it is necessary to study the mechanism of intestinal–muscle axis, and nutrients play a role in the treatment of senile sarcopenia through this mechanism. This review summarizes the available literature on mechanisms and specific pathways of gut–muscle axis and discusses the potential role and therapeutic feasibility of gut microbiota in age-related sarcopenia to understand the development of age-related sarcopenia and figure out the novel perspective of the potential therapeutic interventional targets.
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Affiliation(s)
- Xiaoshan Liao
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Nutrition and Food Hygiene, School of Public Health, Southern Medical University, Guangzhou, China
| | - Mengting Wu
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Nutrition and Food Hygiene, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yuting Hao
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Nutrition and Food Hygiene, School of Public Health, Southern Medical University, Guangzhou, China
| | - Hong Deng
- Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Nutrition and Food Hygiene, School of Public Health, Southern Medical University, Guangzhou, China
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The Gut-Muscle Axis in Older Subjects with Low Muscle Mass and Performance: A Proof of Concept Study Exploring Fecal Microbiota Composition and Function with Shotgun Metagenomics Sequencing. Int J Mol Sci 2020; 21:ijms21238946. [PMID: 33255677 PMCID: PMC7728056 DOI: 10.3390/ijms21238946] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/16/2020] [Accepted: 11/24/2020] [Indexed: 02/07/2023] Open
Abstract
The gut microbiota could influence the pathophysiology of age-related sarcopenia through multiple mechanisms implying modulation of chronic inflammation and anabolic resistance. The aim of this study was to compare the fecal microbiota composition and functionality, assessed by shotgun metagenomics sequencing, between two groups of elderly outpatients, differing only for the presence of primary sarcopenia. Five sarcopenic elderly subjects and twelve non-sarcopenic controls, classified according to lower limb function and bioimpedance-derived skeletal muscle index, provided a stool sample, which was analyzed with shotgun metagenomics approaches, to determine the overall microbiota composition, the representation of bacteria at the species level, and the prediction of bacterial genes involved in functional metabolic pathways. Sarcopenic subjects displayed different fecal microbiota compositions at the species level, with significant depletion of two species known for their metabolic capacity of producing short-chain fatty acids (SCFAs), Faecalibacterium prausnitzii and Roseburia inulinivorans, and of Alistipes shahii. Additionally, their fecal metagenome had different representation of genes belonging to 108 metabolic pathways, namely, depletion of genes involved in SCFA synthesis, carotenoid and isoflavone biotransformation, and amino acid interconversion. These results support the hypothesis of an association between microbiota and sarcopenia, indicating novel possible mediators, whose clinical relevance should be investigated in future studies.
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Nguyen HH, Wu F, Oddy WH, Wills K, Brennan-Olsen SL, Jones G, Winzenberg T. Longitudinal associations of dietary patterns with sociodemographic and lifestyle factors in older adults: the TASOAC study. Eur J Clin Nutr 2020; 75:759-767. [PMID: 33199850 DOI: 10.1038/s41430-020-00802-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 10/01/2020] [Accepted: 10/28/2020] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES To derive dietary patterns and examine their longitudinal associations with sociodemographic and lifestyle factors in the Tasmanian Older Adult Cohort. SUBJECTS/METHODS This is a corrected analysis of a retracted paper. We followed 1098 adults aged ≥50 years for 5 years. Dietary intake was assessed using a validated food frequency questionnaire. Baseline dietary patterns were identified using exploratory factor analysis and scores at each time point calculated using the weighted sum score method. Associations of energy-adjusted dietary pattern scores with participant characteristics were assessed using linear mixed-effects models. RESULTS The four dietary patterns identified were: fruit and vegetable (vegetables, potatoes, fruits); animal protein (poultry, red meats, fish); snack (snacks, sweets, nuts); western (meat pies, hamburgers, pizzas). Fruit and vegetable pattern scores were lower in men and current smokers at baseline. Animal protein scores were lower in older and retired people but higher in men and smokers at baseline. The sex difference in animal protein score increased over time (p = 0.012). At baseline, snack score was positively associated with age and physical activity, but lower in men and current smokers. The effect of age on snack score lessened over time (p = 0.035). Western scores were lower in older people but higher in men, current smokers and those living in disadvantaged areas at baseline. The effect of age on western score reduced over time (p = 0.001). CONCLUSIONS The higher scores for healthy and/or lower scores for unhealthy patterns in men, smokers, retirees and those experiencing social disadvantage suggest these could be target groups for interventions to improve diet quality in older adults.
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Affiliation(s)
- Hoa H Nguyen
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, 7000, TAS, Australia.,Ho Chi Minh City University of Medicine and Pharmacy, 217 Hong Bang Street, District 5, Ho Chi Minh City, Vietnam
| | - Feitong Wu
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, 7000, TAS, Australia
| | - Wendy H Oddy
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, 7000, TAS, Australia
| | - Karen Wills
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, 7000, TAS, Australia
| | - Sharon L Brennan-Olsen
- Department of Medicine-Western Health, The University of Melbourne, 176 Furlong Road, St Albans, 3021, VIC, Australia.,Australian Institute for Musculoskeletal Science (AIMSS), University of Melbourne-Western Health, 176 Furlong Road, St Albans, 3021, VIC, Australia.,School of Health and Social Development, Deakin University, Geelong Waterfront Campus, Gheringhap Street, Geelong, VIC, Australia.,Institute for Health Transformation, Deakin University, Geelong Waterfront Campus, Gheringhap Street, Geelong, VIC, Australia
| | - Graeme Jones
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, 7000, TAS, Australia
| | - Tania Winzenberg
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, 7000, TAS, Australia.
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Manickam R, Duszka K, Wahli W. PPARs and Microbiota in Skeletal Muscle Health and Wasting. Int J Mol Sci 2020; 21:ijms21218056. [PMID: 33137899 PMCID: PMC7662636 DOI: 10.3390/ijms21218056] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 10/24/2020] [Accepted: 10/26/2020] [Indexed: 02/06/2023] Open
Abstract
Skeletal muscle is a major metabolic organ that uses mostly glucose and lipids for energy production and has the capacity to remodel itself in response to exercise and fasting. Skeletal muscle wasting occurs in many diseases and during aging. Muscle wasting is often accompanied by chronic low-grade inflammation associated to inter- and intra-muscular fat deposition. During aging, muscle wasting is advanced due to increased movement disorders, as a result of restricted physical exercise, frailty, and the pain associated with arthritis. Muscle atrophy is characterized by increased protein degradation, where the ubiquitin-proteasomal and autophagy-lysosomal pathways, atrogenes, and growth factor signaling all play an important role. Peroxisome proliferator-activated receptors (PPARs) are members of the nuclear receptor family of transcription factors, which are activated by fatty acids and their derivatives. PPARs regulate genes that are involved in development, metabolism, inflammation, and many cellular processes in different organs. PPARs are also expressed in muscle and exert pleiotropic specialized responses upon activation by their ligands. There are three PPAR isotypes, viz., PPARα, -β/δ, and -γ. The expression of PPARα is high in tissues with effective fatty acid catabolism, including skeletal muscle. PPARβ/δ is expressed more ubiquitously and is the predominant isotype in skeletal muscle. It is involved in energy metabolism, mitochondrial biogenesis, and fiber-type switching. The expression of PPARγ is high in adipocytes, but it is also implicated in lipid deposition in muscle and other organs. Collectively, all three PPAR isotypes have a major impact on muscle homeostasis either directly or indirectly. Furthermore, reciprocal interactions have been found between PPARs and the gut microbiota along the gut–muscle axis in both health and disease. Herein, we review functions of PPARs in skeletal muscle and their interaction with the gut microbiota in the context of muscle wasting.
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Affiliation(s)
- Ravikumar Manickam
- Department of Pharmaceutical Sciences, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA;
| | - Kalina Duszka
- Department of Nutritional Sciences, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria;
| | - Walter Wahli
- Center for Integrative Genomics, University of Lausanne, Le Génopode, CH-1015 Lausanne, Switzerland
- Toxalim, INRAE, Chemin de Tournefeuille 180, F-31027 Toulouse, France
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11 Mandalay Road, Singapore 308232, Singapore
- Correspondence:
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Zhang J, Zhao A, Wu W, Ren Z, Yang C, Wang P, Zhang Y. Beneficial Effect of Dietary Diversity on the Risk of Disability in Activities of Daily Living in Adults: A Prospective Cohort Study. Nutrients 2020; 12:nu12113263. [PMID: 33113764 PMCID: PMC7692387 DOI: 10.3390/nu12113263] [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: 10/02/2020] [Revised: 10/21/2020] [Accepted: 10/23/2020] [Indexed: 01/04/2023] Open
Abstract
Disability in activities of daily living (ADL) is common in elderly people. Dietary diversity is associated with several age-related diseases. The evidence on dietary diversity score (DDS) and ADL disability is limited. This study was based on the China Health and Nutrition Survey. Prospective data of 5004 participants were analyzed. ADL disability was defined as the inability to perform at least one of the five self-care tasks. Cox proportional regression models were conducted to estimate the association of cumulative average DDS with the risk of ADL disability. Logistic regression models were performed to estimate the odds ratios for the average DDS, the baseline DDS, and the recent DDS prior to the end of the survey in relation to ADL disability, respectively. The results indicate that higher average DDS was associated with a decreased risk of ADL disability (T3 vs. T1: hazard ratio 0.50; 95% confidence interval 0.39-0.66). The association was stronger among participants who did not had comorbidity at baseline than those who did (P-interaction 0.035). The average DDS is the most pronounced in estimating the association of DDS with ADL disability of the three approaches. In summary, higher DDS has beneficial effects on ADL disability, and long-term dietary exposure is more preferable in the investigation of DDS and ADL.
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Affiliation(s)
- Jian Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (J.Z.); (W.W.); (Z.R.); (C.Y.)
| | - Ai Zhao
- Vanke School of Public Health, Tsinghua University, Beijing 100091, China;
| | - Wei Wu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (J.Z.); (W.W.); (Z.R.); (C.Y.)
| | - Zhongxia Ren
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (J.Z.); (W.W.); (Z.R.); (C.Y.)
| | - Chenlu Yang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (J.Z.); (W.W.); (Z.R.); (C.Y.)
| | - Peiyu Wang
- Department of Social Medicine and Health Education, School of Public Health, Peking University, Beijing 100191, China;
| | - Yumei Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100191, China; (J.Z.); (W.W.); (Z.R.); (C.Y.)
- Correspondence: ; Tel.: +86-10-8280-1575-63
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Measuring Protein Content in Food: An Overview of Methods. Foods 2020; 9:foods9101340. [PMID: 32977393 PMCID: PMC7597951 DOI: 10.3390/foods9101340] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 09/18/2020] [Indexed: 12/27/2022] Open
Abstract
In order to determine the quantity of protein in food, it is important to have standardized analytical methods. Several methods exist that are used in different food industries to quantify protein content, including the Kjeldahl, Lowry, Bradford and total amino acid content methods. The correct determination of the protein content of foods is important as, often, as is the case with milk, it determines the economic value of the food product and it can impact the economic feasibility of new industries for alternative protein production. This editorial provides an overview of different protein determination methods and describes their advantages and disadvantages.
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50
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AlHilli MM, Bae-Jump V. Diet and gut microbiome interactions in gynecologic cancer. Gynecol Oncol 2020; 159:299-308. [PMID: 32933758 DOI: 10.1016/j.ygyno.2020.08.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 08/23/2020] [Indexed: 12/13/2022]
Abstract
Over the last decade, there has been a dramatic surge in research exploring the human gut microbiome and its role in health and disease. It is now widely accepted that commensal microorganisms coexist within the human gastrointestinal tract and other organs, including those of the reproductive tract. These microorganisms, which are collectively known as the "microbiome", contribute to maintaining host physiology and to the development of pathology. Next generation sequencing and multi-'omics' technology has enriched our understanding of the complex and interdependent relationship that exists between the host and microbiome. Global changes in the microbiome are known to be influenced by dietary, genetic, lifestyle, and environmental factors. Accumulating data have shown that alterations in the gut microbiome contribute to the development, prognosis and treatment of many disease states including cancer primarily through interactions with the immune system. However, there are large gaps in knowledge regarding the association between the gut microbiome and gynecologic cancers, and research characterizing the reproductive tract microbiome is insufficient. Herein, we explore the mechanisms by which alterations in the gut and reproductive tract microbiome contribute to carcinogenesis focusing on obesity, hyperestrogenism, inflammation and altered tumor metabolism. The impact of the gut microbiome on response to anti-cancer therapy is highlighted with an emphasis on immune checkpoint inhibitor efficacy in gynecologic cancers. We discuss dietary interventions that are likely to modulate the metabolic and immunologic milieu as well as tumor microenvironment through the gut microbiome including intermittent fasting/ketogenic diet, high fiber diet, use of probiotics and the metabolic management of obesity. We conclude that enhanced understanding of the microbiome in gynecologic cancers coupled with thorough evaluation of metabolic and metagenomic analyses would enable us to integrate novel preventative strategies and adjunctive interventions into the care of women with gynecologic cancers.
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Affiliation(s)
- Mariam M AlHilli
- Department of Obstetrics and Gynecology, Women's Health Institute, Cleveland Clinic, Cleveland, OH, United States of America.
| | - Victoria Bae-Jump
- Department of Obstetrics and Gynecology, University of North Carolina, Chapel Hill, NC, United States of America
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