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Duan W, Liu F, Ren Y, Zhang X, Shi JS, Xue Y, Xu ZH, Geng Y. Differences in the Ability of Lactic Acid Bacteria To Prevent Acute Alcohol-Induced Liver Injury via the Gut Microbiota-Bile Acid-Liver Axis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:15265-15275. [PMID: 38918075 DOI: 10.1021/acs.jafc.4c01353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Probiotics can regulate gut microbiota and protect against acute alcohol-induced liver injury through the gut-liver axis. However, efficacy is strain-dependent, and their mechanism remains unclear. This study investigated the effect of lactic acid bacteria (LAB), including Lacticaseibacillus paracasei E10 (E10), Lactiplantibacillus plantarum M (M), Lacticaseibacillus rhamnosus LGG (LGG), Lacticaseibacillus paracasei JN-1 (JN-1), and Lacticaseibacillus paracasei JN-8 (JN-8), on the prevention of acute alcoholic liver injury in mice. We found that LAB pretreatment reduced serum alanine transaminase (ALT) and aspartate transaminase (AST) and reduced hepatic total cholesterol (TC) and triglyceride (TG). JN-8 pretreatment exhibited superior efficacy in improving hepatic antioxidation. LGG and JN-8 pretreatment significantly attenuated hepatic and colonic inflammation by decreasing the expression of interleukin 6 (IL-6) and tumor necrosis factor α (TNF-α) and increasing the expression of interleukin 10 (IL-10). JN-1 and JN-8 pretreatments have better preventive effects than other LAB pretreatment on intestinal barrier dysfunction. In addition, the LAB pretreatment improved gut microbial dysbiosis and bile acid (BA) metabolic abnormality. All of the strains were confirmed to have bile salt deconjugation capacities in vitro, where M and JN-8 displayed higher activities. This study provides new insights into the prevention and mechanism of LAB strains in preventing acute alcoholic liver injury.
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Affiliation(s)
- Wenhui Duan
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Department of Gastroenterology, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Fei Liu
- Wuxi Hospital of Traditional Chinese Medicine, Wuxi, Jiangsu 214122, People's Republic of China
| | - Yilin Ren
- Department of Gastroenterology, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Xiaojuan Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Jin-Song Shi
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Yuzheng Xue
- Department of Gastroenterology, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Zheng-Hong Xu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Advanced Brewing Technology Innovation Center, Sichuan University, Chengdu, Sichuan 610065, People's Republic of China
| | - Yan Geng
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Department of Gastroenterology, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
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Xiao M, Zhang C, Duan H, Narbad A, Zhao J, Chen W, Zhai Q, Yu L, Tian F. Cross-feeding of bifidobacteria promotes intestinal homeostasis: a lifelong perspective on the host health. NPJ Biofilms Microbiomes 2024; 10:47. [PMID: 38898089 PMCID: PMC11186840 DOI: 10.1038/s41522-024-00524-6] [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: 12/29/2023] [Accepted: 06/07/2024] [Indexed: 06/21/2024] Open
Abstract
Throughout the life span of a host, bifidobacteria have shown superior colonization and glycan abilities. Complex glycans, such as human milk oligosaccharides and plant glycans, that reach the colon are directly internalized by the transport system of bifidobacteria, cleaved into simple structures by extracellular glycosyl hydrolase, and transported to cells for fermentation. The glycan utilization of bifidobacteria introduces cross-feeding activities between bifidobacterial strains and other microbiota, which are influenced by host nutrition and regulate gut homeostasis. This review discusses bifidobacterial glycan utilization strategies, focusing on the cross-feeding involved in bifidobacteria and its potential health benefits. Furthermore, the impact of cross-feeding on the gut trophic niche of bifidobacteria and host health is also highlighted. This review provides novel insights into the interactions between microbe-microbe and host-microbe.
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Affiliation(s)
- Meifang Xiao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Chuan Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Hui Duan
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Arjan Narbad
- Quadram Institute Bioscience, Norwich Research Park Colney, Norwich, Norfolk, NR4 7UA, UK
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Wei Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Qixiao Zhai
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
| | - Leilei Yu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China.
| | - Fengwei Tian
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China.
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Chamoto K, Zhang B, Tajima M, Honjo T, Fagarasan S. Spermidine - an old molecule with a new age-defying immune function. Trends Cell Biol 2024; 34:363-370. [PMID: 37723019 DOI: 10.1016/j.tcb.2023.08.002] [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: 05/18/2023] [Revised: 08/04/2023] [Accepted: 08/22/2023] [Indexed: 09/20/2023]
Abstract
Polyamines - putrescine, spermidine, and spermine - are widely distributed aliphatic compounds known to regulate important biological processes in prokaryotic and eukaryotic cells. Therefore, spermidine insufficiency is associated with various physio-pathological processes, such as aging and cancers. Recent advances in immuno-metabolism and immunotherapy shed new light on the role of spermidine in immune cell regulation and anticancer responses. Here, we review novel works demonstrating that spermidine is produced by collective metabolic pathways of gut bacteria, bacteria-host co-metabolism, and by the host cells, including activated immune cells. We highlight the effectiveness of spermidine in enhancing antitumor responses in aged animals otherwise nonresponsive to immune checkpoint therapy and propose that spermidine supplementation could be used to enhance the efficacy of anti-PD-1 treatment.
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Affiliation(s)
- Kenji Chamoto
- Department of Immunology and Genomic Medicine, Center for Cancer Immunotherapy and Immunobiology, Kyoto University Graduate School of Medicine, Kyoto, Japan; Department of Immuno-Oncology PDT, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Baihao Zhang
- Laboratory for Mucosal Immunity, Center for Integrative Medical Sciences, RIKEN Yokohama Institute, Yokohama, Japan; Division of Integrated High-Order Regulatory Systems, Center for Cancer Immunotherapy and Immunobiology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masaki Tajima
- Division of Integrated High-Order Regulatory Systems, Center for Cancer Immunotherapy and Immunobiology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tasuku Honjo
- Department of Immunology and Genomic Medicine, Center for Cancer Immunotherapy and Immunobiology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Sidonia Fagarasan
- Laboratory for Mucosal Immunity, Center for Integrative Medical Sciences, RIKEN Yokohama Institute, Yokohama, Japan; Division of Integrated High-Order Regulatory Systems, Center for Cancer Immunotherapy and Immunobiology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
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Zhanbo Q, Jing Z, Shugao H, Yinhang W, Jian C, Xiang Y, Feimin Z, Jian L, Xinyue W, Wei W, Shuwen H. Age and aging process alter the gut microbes. Aging (Albany NY) 2024; 16:6839-6851. [PMID: 38613799 PMCID: PMC11087091 DOI: 10.18632/aging.205728] [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: 08/15/2023] [Accepted: 03/05/2024] [Indexed: 04/15/2024]
Abstract
BACKGROUND Gut microbes and age are both factors that influence the development of disease. The community structure of gut microbes is affected by age. OBJECTIVE To plot time-dependent gut microbe profiles in individuals over 45 years old and explore the correlation between age and gut microbes. METHODS Fecal samples were collected from 510 healthy individuals over 45 years old. Shannon index, Simpson index, Ace index, etc. were used to analyze the diversity of gut microbes. The beta diversity analysis, including non-metric multidimensional scaling (NMDS), was used to analyze community distribution. Linear discriminant analysis (LDA) and random forest (RF) algorithm were used to analyze the differences of gut microbes. Trend analysis was used to plot the abundances of characteristic gut microbes in different ages. RESULTS The individuals aged 45-49 had the highest richness of gut bacteria. Fifteen characteristic gut microbes, including Siphoviridae and Bifidobacterium breve, were screened by RF algorithm. The abundance of Ligiactobacillus and Microviridae were higher in individuals older than 65 years. Moreover, the abundance of Blautia_A massiliensis, Lubbockvirus and Enterocloster clostridioformis decreased with age and the abundance of Klebsiella variicola and Prevotella increased with age. The functional genes, such as human diseases and aging, were significantly different among different aged individuals. CONCLUSIONS The individuals in different ages have characteristic gut microbes. The changes in community structure of gut microbes may be related to age-induced diseases.
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Affiliation(s)
- Qu Zhanbo
- Fifth School of Clinical Medicine of Zhejiang Chinese Medical University (Huzhou Central Hospital), Huzhou 313000, Zhejiang, China
- Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou 313000, Zhejiang, China
- Key Laboratory of Multiomics Research and Clinical Transformation of Digestive Cancer, Huzhou 313000, Zhejiang, China
| | - Zhuang Jing
- Fifth School of Clinical Medicine of Zhejiang Chinese Medical University (Huzhou Central Hospital), Huzhou 313000, Zhejiang, China
- Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou 313000, Zhejiang, China
- Key Laboratory of Multiomics Research and Clinical Transformation of Digestive Cancer, Huzhou 313000, Zhejiang, China
| | - Han Shugao
- The Second Hospital Affiliated to Zhejiang University School of Medicine, Hangzhou 310017, Zhejiang, China
| | - Wu Yinhang
- Fifth School of Clinical Medicine of Zhejiang Chinese Medical University (Huzhou Central Hospital), Huzhou 313000, Zhejiang, China
- Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou 313000, Zhejiang, China
- Key Laboratory of Multiomics Research and Clinical Transformation of Digestive Cancer, Huzhou 313000, Zhejiang, China
| | - Chu Jian
- Fifth School of Clinical Medicine of Zhejiang Chinese Medical University (Huzhou Central Hospital), Huzhou 313000, Zhejiang, China
- Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou 313000, Zhejiang, China
- Key Laboratory of Multiomics Research and Clinical Transformation of Digestive Cancer, Huzhou 313000, Zhejiang, China
| | - Yu Xiang
- Fifth School of Clinical Medicine of Zhejiang Chinese Medical University (Huzhou Central Hospital), Huzhou 313000, Zhejiang, China
- Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou 313000, Zhejiang, China
- Key Laboratory of Multiomics Research and Clinical Transformation of Digestive Cancer, Huzhou 313000, Zhejiang, China
| | - Zhao Feimin
- Fifth School of Clinical Medicine of Zhejiang Chinese Medical University (Huzhou Central Hospital), Huzhou 313000, Zhejiang, China
- Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou 313000, Zhejiang, China
- Key Laboratory of Multiomics Research and Clinical Transformation of Digestive Cancer, Huzhou 313000, Zhejiang, China
| | - Liu Jian
- Fifth School of Clinical Medicine of Zhejiang Chinese Medical University (Huzhou Central Hospital), Huzhou 313000, Zhejiang, China
- Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou 313000, Zhejiang, China
- Key Laboratory of Multiomics Research and Clinical Transformation of Digestive Cancer, Huzhou 313000, Zhejiang, China
| | - Wu Xinyue
- Fifth School of Clinical Medicine of Zhejiang Chinese Medical University (Huzhou Central Hospital), Huzhou 313000, Zhejiang, China
| | - Wu Wei
- Fifth School of Clinical Medicine of Zhejiang Chinese Medical University (Huzhou Central Hospital), Huzhou 313000, Zhejiang, China
- Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou 313000, Zhejiang, China
- Key Laboratory of Multiomics Research and Clinical Transformation of Digestive Cancer, Huzhou 313000, Zhejiang, China
| | - Han Shuwen
- Fifth School of Clinical Medicine of Zhejiang Chinese Medical University (Huzhou Central Hospital), Huzhou 313000, Zhejiang, China
- Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Huzhou 313000, Zhejiang, China
- Key Laboratory of Multiomics Research and Clinical Transformation of Digestive Cancer, Huzhou 313000, Zhejiang, China
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Matsuzaki C, Takagi H, Saiga S, Kinoshita Y, Yamaguchi M, Higashimura Y, Yamamoto K, Yamaguchi M. Prebiotic effect of galacto- N-biose on the intestinal lactic acid bacteria as enhancer of acetate production and hypothetical colonization. Appl Environ Microbiol 2024; 90:e0144523. [PMID: 38411084 PMCID: PMC10952502 DOI: 10.1128/aem.01445-23] [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: 08/22/2023] [Accepted: 01/28/2024] [Indexed: 02/28/2024] Open
Abstract
Galacto-N-biose (GNB) is an important core structure of glycan of mucin glycoproteins in the gastrointestinal (GI) mucosa. Because certain beneficial bacteria inhabiting the GI tract, such as bifidobacteria and lactic acid bacteria, harbor highly specialized GNB metabolic capabilities, GNB is considered a promising prebiotic for nourishing and manipulating beneficial bacteria in the GI tract. However, the precise interactions between GNB and beneficial bacteria and their accompanying health-promoting effects remain elusive. First, we evaluated the proliferative tendency of beneficial bacteria and their production of beneficial metabolites using gut bacterial strains. By comparing the use of GNB, glucose, and inulin as carbon sources, we found that GNB enhanced acetate production in Lacticaseibacillus casei, Lacticaseibacillus rhamnosus, Lactobacillus gasseri, and Lactobacillus johnsonii. The ability of GNB to promote acetate production was also confirmed by RNA-seq analysis, which indicated the upregulation of gene clusters that catalyze the deacetylation of N-acetylgalactosamine-6P and biosynthesize acetyl-CoA from pyruvate, both of which result in acetate production. To explore the in vivo effect of GNB in promoting acetate production, antibiotic-treated BALB/cA mice were administered with GNB with L. rhamnosus, resulting in a fecal acetate content that was 2.7-fold higher than that in mice administered with only L. rhamnosus. Moreover, 2 days after the last administration, a 3.7-fold higher amount of L. rhamnosus was detected in feces administered with GNB with L. rhamnosus than in feces administered with only L. rhamnosus. These findings strongly suggest the prebiotic potential of GNB in enhancing L. rhamnosus colonization and converting L. rhamnosus into higher acetate producers in the GI tract. IMPORTANCE Specific members of lactic acid bacteria, which are commonly used as probiotics, possess therapeutic properties that are vital for human health enhancement by producing immunomodulatory metabolites such as exopolysaccharides, short-chain fatty acids, and bacteriocins. The long residence time of probiotic lactic acid bacteria in the GI tract prolongs their beneficial health effects. Moreover, the colonization property is also desirable for the application of probiotics in mucosal vaccination to provoke a local immune response. In this study, we found that GNB could enhance the beneficial properties of intestinal lactic acid bacteria that inhabit the human GI tract, stimulating acetate production and promoting intestinal colonization. Our findings provide a rationale for the addition of GNB to lactic acid bacteria-based functional foods. This has also led to the development of therapeutics supported by more rational prebiotic and probiotic selection, leading to an improved healthy lifestyle for humans.
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Affiliation(s)
- Chiaki Matsuzaki
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Hiroki Takagi
- Department of Production Science, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Sorachi Saiga
- Department of Production Science, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Yuun Kinoshita
- Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Misako Yamaguchi
- Department of Organic Bio Chemistry, Faculty of Education, Wakayama University, Wakayama, Japan
| | - Yasuki Higashimura
- Department of Food Science, Ishikawa Prefectural University, Nonoichi, Ishikawa, Japan
| | - Kenji Yamamoto
- Center for Innovative and Joint Research, Wakayama University, Wakayama, Japan
| | - Masanori Yamaguchi
- Department of Organic Bio Chemistry, Faculty of Education, Wakayama University, Wakayama, Japan
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Xiao Y, Feng Y, Zhao J, Chen W, Lu W. Achieving healthy aging through gut microbiota-directed dietary intervention: Focusing on microbial biomarkers and host mechanisms. J Adv Res 2024:S2090-1232(24)00092-4. [PMID: 38462039 DOI: 10.1016/j.jare.2024.03.005] [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: 12/29/2023] [Revised: 02/23/2024] [Accepted: 03/07/2024] [Indexed: 03/12/2024] Open
Abstract
BACKGROUND Population aging has become a primary global public health issue, and the prevention of age-associated diseases and prolonging healthy life expectancies are of particular importance. Gut microbiota has emerged as a novel target in various host physiological disorders including aging. Comprehensive understanding on changes of gut microbiota during aging, in particular gut microbiota characteristics of centenarians, can provide us possibility to achieving healthy aging or intervene pathological aging through gut microbiota-directed strategies. AIM OF REVIEW This review aims to summarize the characteristics of the gut microbiota associated with aging, explore potential biomarkers of aging and address microbiota-associated mechanisms of host aging focusing on intestinal barrier and immune status. By summarizing the existing effective dietary strategies in aging interventions, the probability of developing a diet targeting the gut microbiota in future is provided. KEY SCIENTIFIC CONCEPTS OF REVIEW This review is focused on three key notions: Firstly, gut microbiota has become a new target for regulating health status and lifespan, and its changes are closely related to age. Thus, we summarized aging-associated gut microbiota features at the levels of key genus/species and important metabolites through comparing the microbiota differences among centenarians, elderly people and younger people. Secondly, exploring microbiota biomarkers related to aging and discussing future possibility using dietary regime/components targeted to aging-related microbiota biomarkers promote human healthy lifespan. Thirdly, dietary intervention can effectively improve the imbalance of gut microbiota related to aging, such as probiotics, prebiotics, and postbiotics, but their effects vary among.
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Affiliation(s)
- Yue Xiao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, PR China.
| | - Yingxuan Feng
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, PR China
| | - Wei Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, PR China
| | - Wenwei Lu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, PR China.
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Myers T, Bouslimani A, Huang S, Hansen ST, Clavaud C, Azouaoui A, Ott A, Gueniche A, Bouez C, Zheng Q, Aguilar L, Knight R, Moreau M, Song SJ. A multi-study analysis enables identification of potential microbial features associated with skin aging signs. FRONTIERS IN AGING 2024; 4:1304705. [PMID: 38362046 PMCID: PMC10868648 DOI: 10.3389/fragi.2023.1304705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 12/12/2023] [Indexed: 02/17/2024]
Abstract
Introduction: During adulthood, the skin microbiota can be relatively stable if environmental conditions are also stable, yet physiological changes of the skin with age may affect the skin microbiome and its function. The microbiome is an important factor to consider in aging since it constitutes most of the genes that are expressed on the human body. However, severity of specific aging signs (one of the parameters used to measure "apparent" age) and skin surface quality (e.g., texture, hydration, pH, sebum, etc.) may not be indicative of chronological age. For example, older individuals can have young looking skin (young apparent age) and young individuals can be of older apparent age. Methods: Here we aim to identify microbial taxa of interest associated to skin quality/aging signs using a multi-study analysis of 13 microbiome datasets consisting of 16S rRNA amplicon sequence data and paired skin clinical data from the face. Results: We show that there is a negative relationship between microbiome diversity and transepidermal water loss, and a positive association between microbiome diversity and age. Aligned with a tight link between age and wrinkles, we report a global positive association between microbiome diversity and Crow's feet wrinkles, but with this relationship varying significantly by sub-study. Finally, we identify taxa potentially associated with wrinkles, TEWL and corneometer measures. Discussion: These findings represent a key step towards understanding the implication of the skin microbiota in skin aging signs.
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Affiliation(s)
- Tyler Myers
- Center for Microbiome Innovation, Jacobs School of Engineering, University of California San Diego, La Jolla, CA, United States
| | | | - Shi Huang
- Center for Microbiome Innovation, Jacobs School of Engineering, University of California San Diego, La Jolla, CA, United States
- Department of Pediatrics, University of California San Diego, La Jolla, CA, United States
| | - Shalisa T. Hansen
- Center for Microbiome Innovation, Jacobs School of Engineering, University of California San Diego, La Jolla, CA, United States
| | - Cécile Clavaud
- L’Oréal Research and Innovation, Aulnay sous Bois, France
| | | | - Alban Ott
- L’Oréal Research and Innovation, Aulnay sous Bois, France
| | | | - Charbel Bouez
- L’Oréal Research and Innovation, Clark, NJ, United States
| | - Qian Zheng
- L’Oréal Research and Innovation, Clark, NJ, United States
| | - Luc Aguilar
- L’Oréal Research and Innovation, Aulnay sous Bois, France
| | - Rob Knight
- Center for Microbiome Innovation, Jacobs School of Engineering, University of California San Diego, La Jolla, CA, United States
- Department of Pediatrics, University of California San Diego, La Jolla, CA, United States
- Department of Computer Science and Engineering, University of California San Diego, La Jolla, CA, United States
- Shu Chien-Gene Lay Department of Engineering, University of California San Diego, La Jolla, CA, United States
- Halıcıoğlu Data Science Institute, University of California San Diego, La Jolla, CA, United States
| | - Magali Moreau
- L’Oréal Research and Innovation, Clark, NJ, United States
- L’Oréal Research and Innovation, Aulnay sous Bois, France
| | - Se Jin Song
- Center for Microbiome Innovation, Jacobs School of Engineering, University of California San Diego, La Jolla, CA, United States
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8
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Flórez-Fernández N, Rodríguez-Coello A, Latire T, Bourgougnon N, Torres MD, Buján M, Muíños A, Muiños A, Meijide-Faílde R, Blanco FJ, Vaamonde-García C, Domínguez H. Anti-inflammatory potential of ulvan. Int J Biol Macromol 2023; 253:126936. [PMID: 37722645 DOI: 10.1016/j.ijbiomac.2023.126936] [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: 05/22/2023] [Revised: 08/30/2023] [Accepted: 09/15/2023] [Indexed: 09/20/2023]
Abstract
Green seaweeds are a widespread group of marine macroalgae that could be regarded as biorenewable source of valuable compounds, in particular sulfated polysaccharides like ulvans with interesting biological properties. Among them, anti-inflammatory activity represents an interesting target, since ulvans could potentially avoid side effects of conventional therapies. However, a great variability in ulvan content, composition, structure and properties occurs depending on seaweed specie and growth and processing conditions. All these aspects should be carefully considered in order to have reproducible and well characterized products. This review presents some concise ideas on ulvan composition and general concepts on inflammation mechanisms. Then, the main focus is on the importance of adequate selection of extraction, depolymerization and purification technologies followed by an updated survey on anti-inflammatory properties of ulvans through modulation of different signaling pathways. The potential application in a number of diseases, with special emphasis on inflammaging, gut microbiota dysbiosis, wound repair, and metabolic diseases is also discussed. This multidisciplinary overview tries to present the potential of ulvans considering not only mechanistic, but also processing and applications aspects, trusting that it can aid in the development and application of this widely available and renewable resource as an efficient and versatile anti-inflammatory agent.
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Affiliation(s)
- Noelia Flórez-Fernández
- CINBIO, Universidade de Vigo, Departamento de Ingeniería Química, Campus Ourense, 32004 Ourense, Spain.
| | - Arianna Rodríguez-Coello
- Grupo de Investigación de Reumatología y Salud (GIR-S), Departamento de Biología, Facultad de Ciencias, CICA-Centro Interdisciplinar de Química y Biología, INIBIC-Sergas, Universidade da Coruña, Campus da Zapateira, 15011 A Coruña, Spain.
| | - Thomas Latire
- Laboratoire de Biotechnologie et Chimie Marines, EMR CNRS 6076, UBS, IUEM, F-56000 Vannes, France; Université Catholique de l'Ouest Bretagne Nord, 22200 Guingamp, France.
| | - Nathalie Bourgougnon
- Laboratoire de Biotechnologie et Chimie Marines, EMR CNRS 6076, UBS, IUEM, F-56000 Vannes, France.
| | - M Dolores Torres
- CINBIO, Universidade de Vigo, Departamento de Ingeniería Química, Campus Ourense, 32004 Ourense, Spain.
| | - Manuela Buján
- Portomuíños, Polígono Industrial, Rúa Acebedo, Parcela 14, 15185 Cerceda, A Coruña, Spain.
| | - Alexandra Muíños
- Portomuíños, Polígono Industrial, Rúa Acebedo, Parcela 14, 15185 Cerceda, A Coruña, Spain.
| | - Antonio Muiños
- Portomuíños, Polígono Industrial, Rúa Acebedo, Parcela 14, 15185 Cerceda, A Coruña, Spain.
| | - Rosa Meijide-Faílde
- Grupo de Terapia Celular y Medicina Regenerativa, Universidade da Coruña, CICA-Centro Interdisciplinar de Química y Biología, Complexo Hospitalario Universitario A Coruña, Campus Oza, 15006 A Coruña, Spain.
| | - Francisco J Blanco
- Grupo de Investigación de Reumatología y Salud (GIR-S), Departamento de Fisioterapia, Medicina y Ciencias Biomédicas, Facultad de Fisioterapia, CICA-Centro Interdisciplinar de Química y Biología, INIBIC-Sergas, Universidade da Coruña, Campus de Oza, 15006 A Coruña, Spain.
| | - Carlos Vaamonde-García
- Grupo de Investigación de Reumatología y Salud (GIR-S), Departamento de Biología, Facultad de Ciencias, CICA-Centro Interdisciplinar de Química y Biología, INIBIC-Sergas, Universidade da Coruña, Campus da Zapateira, 15011 A Coruña, Spain.
| | - Herminia Domínguez
- CINBIO, Universidade de Vigo, Departamento de Ingeniería Química, Campus Ourense, 32004 Ourense, Spain.
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9
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Tang X, Zhang L, Ren S, Zhao Y, Zhang Y. Temporal and geographic distribution of gut microbial enterotypes associated with host thermogenesis characteristics in plateau pikas. Microbiol Spectr 2023; 11:e0002023. [PMID: 37815332 PMCID: PMC10715161 DOI: 10.1128/spectrum.00020-23] [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: 01/03/2023] [Accepted: 08/28/2023] [Indexed: 10/11/2023] Open
Abstract
IMPORTANCE The gut microbiotas of small mammals play an important role in host energy homeostasis. However, it is still unknown whether small mammals with different enterotypes show differences in thermogenesis characteristics. Our study confirmed that plateau pikas with different bacterial enterotypes harbored distinct thermogenesis capabilities and employed various strategies against cold environments. Additionally, we also found that pikas with different fungal enterotypes may display differences in coprophagy.
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Affiliation(s)
- Xianjiang Tang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining, China
- University of Chinese Academy of Sciences, College of Life Sciences, Beijing, China
| | - Liangzhi Zhang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining, China
| | - Shi'en Ren
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining, China
- University of Chinese Academy of Sciences, College of Life Sciences, Beijing, China
| | - Yaqi Zhao
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining, China
- University of Chinese Academy of Sciences, College of Life Sciences, Beijing, China
| | - Yanming Zhang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining, China
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10
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Sun W, Zhu J, Qin G, Huang Y, Cheng S, Chen Z, Zhang Y, Shu Y, Zeng X, Guo R. Lonicera japonica polysaccharides alleviate D-galactose-induced oxidative stress and restore gut microbiota in ICR mice. Int J Biol Macromol 2023:125517. [PMID: 37353132 DOI: 10.1016/j.ijbiomac.2023.125517] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/02/2023] [Accepted: 06/20/2023] [Indexed: 06/25/2023]
Abstract
Lonicera japonica polysaccharides (LJPs) exhibit anti-aging effect in nematodes. Here, we further studied the function of LJPs on aging-related disorders in D-galactose (D-gal)-induced ICR mice. Four groups of mice including the control group, the D-gal-treated group, the intervening groups with low and high dose of LJPs (50 and 100 mg/kg/day) were raised for 8 weeks. The results showed that intragastric administration with LJPs improved the organ indexes of D-gal-treated mice. Moreover, LJPs improved the activity of superoxide dismutase (SOD), catalase (CAT) as well as glutathione peroxidase (GSH-Px) and decreasing the malondialdehyde (MDA) level in serum, liver and brain. Meanwhile, LJPs restored the content of acetylcholinesterase (AChE) in the brain. Further, LJPs reversed the liver tissue damages in aging mice. Mechanistically, LJPs alleviate oxidative stress at least partially through regulating Nrf2 signaling. Additionally, LJPs restored the gut microbiota composition of D-gal-treated mice by adjusting the Firmicutes/Bacteroidetes ratio at the phylum level and upregulating the relative abundances of Lactobacillaceae and Bifidobacteriacesa. Notably, the KEGG pathways involved in hazardous substances degradation and flavone and flavonol biosynthesis were significantly enhanced by LJPs treatment. Overall, our study uncovers the role of LJPs in modulating oxidative stress and gut microbiota in the D-gal-induced aging mice.
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Affiliation(s)
- Wenwen Sun
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Jiahao Zhu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Guanyu Qin
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Yujie Huang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Siying Cheng
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Zhengzhi Chen
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Yeyang Zhang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Yifan Shu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Xiaoxiong Zeng
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
| | - Renpeng Guo
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
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11
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Gut microbiome and aging nexus and underlying mechanism. Appl Microbiol Biotechnol 2022; 106:5349-5358. [PMID: 35882675 DOI: 10.1007/s00253-022-12089-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 07/18/2022] [Accepted: 07/20/2022] [Indexed: 02/07/2023]
Abstract
According to the United Nations population profile, the number of individuals aged 60 and over in high-income nations is expected to rise from 302 million to over 366 million between 2019 and 2030, so there is an increasing emphasis on nutrition and health in older people. Numerous studies have demonstrated the crucial role that gut microbiota plays in maintaining human health. As a model of healthy aging, centenarians have different gut microbiota from ordinary elderly people. The core microbiome of centenarians in various countries has shown some common characteristics, which are worth further exploration. In this review, the significance of the human gut microbiota to health is briefly discussed, and the characteristics of the gut microbiota of long-lived senior persons of different ages and in different countries are described. Moreover, this review lists dietary interventions and fecal microbiota transplantation. In the end, it discusses the pros and cons of using probiotics to enhance the health of seniors through focused management of the gut microbiota. It aims to pave the way for further investigation into the nexus between gut microbiota, probiotics, and longevity, and then to reveal the underlying mechanism to promote longevity. KEY POINTS: • Gut microbial structure in different age groups and the characteristics of gut microbiota in centenarians. • Dietary interventions, fecal transplants, and probiotics target the modulation of gut microbiota for healthy aging.
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12
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Mao X, Peng X, Pan Q, Zhao X, Yu Z, Xu D. Uterine Fibroid Patients Reveal Alterations in the Gut Microbiome. Front Cell Infect Microbiol 2022; 12:863594. [PMID: 35646718 PMCID: PMC9131877 DOI: 10.3389/fcimb.2022.863594] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/29/2022] [Indexed: 12/12/2022] Open
Abstract
The gut microbiota is associated with reproductive disorders in multiple ways. This research investigated possible differences in gut microbiome compositions between patients with uterine fibroids (UFs) and healthy control subjects in order to further provide new insight into its etiology. Stool samples were collected from 85 participants, including 42 UF patients (case group) and 43 control subjects (control group). The gut microbiota was examined with 16S rRNA quantitative arrays and bioinformatics analysis. The α-diversity in patients with UFs was significantly lower than that of healthy controls and negatively correlated with the number of tumorigeneses. The microbial composition of the UF patients deviated from the cluster of healthy controls. Stool samples from patients with UFs exhibited significant alterations in terms of multiple bacterial phyla, such as Firmicutes, Proteobacteria, Actinobacteria, and Verrucomicrobia. In differential abundance analysis, some bacteria species were shown to be downregulated (e.g., Bifidobacteria scardovii, Ligilactobacillus saerimneri, and Lactococcus raffinolactis) and upregulated (e.g., Pseudomonas stutzeri and Prevotella amnii). Furthermore, the microbial interactions and networks in UFs exhibited lower connectivity and complexity as well as higher clustering property compared to the controls. Taken together, it is possible that gut microbiota dysbiosis has the potential as a risk factor. This study found that UFs are associated with alterations of the gut microbiome diversity and community network connectivity. It provides a new direction to further explore the host–gut microbiota interplay and to develop management and prevention in UF pathogenesis.
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Affiliation(s)
- Xuetao Mao
- Department of Gynecology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Xuan Peng
- Department of Microbiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Qiong Pan
- Department of Gynecology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Xingping Zhao
- Department of Gynecology, The Third Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Zheng Yu, ; Dabao Xu, ; Xingping Zhao,
| | - Zheng Yu
- Department of Microbiology, School of Basic Medical Science, Central South University, Changsha, China
- *Correspondence: Zheng Yu, ; Dabao Xu, ; Xingping Zhao,
| | - Dabao Xu
- Department of Gynecology, The Third Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Zheng Yu, ; Dabao Xu, ; Xingping Zhao,
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13
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Gut Bifidobacterium responses to probiotic Lactobacillus casei Zhang administration vary between subjects from different geographic regions. Appl Microbiol Biotechnol 2022; 106:2665-2675. [PMID: 35318524 DOI: 10.1007/s00253-022-11868-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 03/03/2022] [Accepted: 03/05/2022] [Indexed: 01/26/2023]
Abstract
Bifidobacteria are health-promoting human gut inhabitants, but accurate species-level composition of the gut bifidobacteria and their responses to probiotic intervention have not been fully explored. This was a follow-up work of our previous study, in which 104 volunteers from six different Asiatic regions (Singapore, Indonesia, Xinjiang, Gansu, Inner Mongolia, Mongolia) were recruited. The gut microbiota and their responses towards Lactobacillus casei Zhang (LCZ) intervention were characterized (at days 0, 7, and 14; 14 days after stopping probiotic intake), and region-based differential responses were observed after LCZ intervention. This study further investigated changes in the species-level gut bifidobacteria by PacBio small-molecule real-time sequencing (SMRT) using bifidobacteria-specific primers. Firstly, this study found that Bifidobacterium adolescentis (42.58%) and Bifidobacterium breve (26.34%) were the core species across the six Asiatic regions. Secondly, principal coordinate analysis of probiotic-induced changes in the gut bifidobacterial microbiota (represented by weighted UniFrac distances) grouped the six regions into two clusters, namely northern (Xinjiang, Gansu, Inner Mongolia, and Mongolia) and southern (Singapore, Indonesia) regions. Thirdly, LCZ intervention induced region-based differential responses of gut bifidobacterial microbiota. The relative abundance of Bifidobacterium animalis in subjects from northern but not southern region substantially increased after LCZ intervention. Moreover, LCZ intervention significantly increased the weighted UniFrac distances in the southern but not northern subjects 7 days after LCZ intervention. The gut B. adolescentis correlated significantly and negatively with the weighted UniFrac distances of the baseline gut bifidobacterial microbiota in subjects of northern but not southern region, suggesting a possible homeostatic effect of LCZ on the gut bifidobacterial population of northern but not southern subjects. Collectively, our study found that probiotic-induced responses of the gut bifidobacterial microbiota varied with subjects' geographic origins, and B. adolescentis might play a role in maintaining the overall stability of the gut bifidobacterial population. KEY POINTS: • The core species in the six Asiatic regions are Bifidobacterium adolescentis and Bifidobacterium breve. • The gut bifidobacterial microbiota in people from various geographic origins showed different responses on probiotic administration.
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14
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Wang J, Hu JQ, Song YJ, Yin J, Wang YYF, Peng B, Zhang BW, Liu JM, Dong L, Wang S. 2'-Fucosyllactose Ameliorates Oxidative Stress Damage in d-Galactose-Induced Aging Mice by Regulating Gut Microbiota and AMPK/SIRT1/FOXO1 Pathway. Foods 2022; 11:foods11020151. [PMID: 35053883 PMCID: PMC8774504 DOI: 10.3390/foods11020151] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 12/31/2021] [Accepted: 01/04/2022] [Indexed: 12/22/2022] Open
Abstract
The imbalance of reactive oxygen species is the main cause in aging, accompanied by oxidative stress. As the most abundant in human milk oligosaccharides (HMOs), 2′-Fucosyllactose (2′-FL) has been confirmed to have great properties in immunity regulation and anti-inflammatory. The research on 2′-FL is focused on infants currently, while there is no related report of 2′-FL for the elderly. A d-galactose-induced accelerated aging model was established to explore the protective effect of 2′-FL on the intestines and brain in mice. In this study, 2′-FL significantly reduced oxidative stress damage and inflammation in the intestines of aging mice, potentially by regulating the sirtuin1 (SIRT1)-related and nuclear factor E2-related factor 2 (Nrf2) pathways. In addition, 2′-FL significantly improved the gut mucosal barrier function and increased the content of short-chain fatty acids (SCFAs) in the intestine. The gut microbiota analysis indicated that 2′-FL mainly increased the abundance of probiotics like Akkermansia in aging mice. Moreover, 2′-FL significantly inhibited apoptosis in the brains of aging mice, also increasing the expression of SIRT1. These findings provided a basis for learning the benefits of 2′-FL in the aging process.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Shuo Wang
- Correspondence: ; Tel.: +86-22-8535-8445
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15
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Wells RK, Kunihiro BP, Phankitnirundorn K, Peres R, McCracken TA, Umeda L, Lee RH, Kim DY, Juarez R, Maunakea AK. Gut microbial indicators of metabolic health underlie age-related differences in obesity and diabetes risk among Native Hawaiians and Pacific Islanders. Front Cell Infect Microbiol 2022; 12:1035641. [PMID: 36619744 PMCID: PMC9812644 DOI: 10.3389/fcimb.2022.1035641] [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: 09/03/2022] [Accepted: 11/16/2022] [Indexed: 12/24/2022] Open
Abstract
Native Hawaiians and Pacific Islanders (NHPIs) suffer from higher prevalence of and mortality to type 2 diabetes mellitus (T2DM) than any other major race/ethnic group in Hawaii. Health inequities in this indigenous population was further exacerbated by the SARS-CoV-2 pandemic. T2DM progression and medical complications exacerbated by COVID-19 are partially regulated by the gut microbiome. However, there is limited understanding of the role of gut bacteria in the context of inflammation-related diseases of health disparities including T2DM and obesity. To address these gaps, we used a community-based research approach from a cohort enriched with NHPI residents on the island of Oahu, Hawaii (N=138). Gut microbiome profiling was achieved via 16s rDNA metagenomic sequencing analysis from stool DNA. Gut bacterial capacity for butyrate-kinase (BUK)-mediated fiber metabolism was assessed using quantitative PCR to measure the abundance of BUK DNA and RNA relative to total bacterial load per stool sample. In our cohort, age positively correlated with hemoglobin A1c (%; R=0.39; P<0.001) and body mass index (BMI; R=0.28; P<0.001). The relative abundance of major gut bacterial phyla significantly varied across age groups, including Bacteroidetes (P<0.001), Actinobacteria (P=0.007), and Proteobacteria (P=0.008). A1c was negatively correlated with the relative levels of BUK DNA copy number (R=-0.17; P=0.071) and gene expression (R=-0.33; P=0.003). Interestingly, we identified specific genera of gut bacteria potentially mediating the effects of diet on metabolic health in this cohort. Additionally, α-diversity among gut bacterial genera significantly varied across T2DM and BMI categories. Together, these results provide insight into age-related differences in gut bacteria that may influence T2DM and obesity in NHPIs. Furthermore, we observed overlapping patterns between gut bacteria and T2DM risk factors, indicating more nuanced, interdependent interactions among these factors as partial determinants of health outcomes. This study adds to the paucity of NHPI-specific data to further elucidate the biological characteristics associated with pre-existing health inequities in this racial/ethnic group that is significantly underrepresented in biomedical research.
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Affiliation(s)
- Riley K Wells
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI, United States.,Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, Honolulu, HI, United States
| | - Braden P Kunihiro
- Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, Honolulu, HI, United States.,Institutional Development Awards (IDeA) Networks of Biomedical Research Excellence (INBRE), University of Hawaii at Manoa, Honolulu, HI, United States
| | - Krit Phankitnirundorn
- Department of Economics, University of Hawaii at Manoa, Honolulu, HI, United States.,University of Hawaii Economic Research Organization (UHERO), University of Hawaii at Manoa, Honolulu, HI, United States
| | - Rafael Peres
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI, United States.,Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, Honolulu, HI, United States
| | - Trevor A McCracken
- Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, Honolulu, HI, United States
| | - Lesley Umeda
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI, United States.,Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, Honolulu, HI, United States
| | - Rosa H Lee
- Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, Honolulu, HI, United States
| | - Dong Yoon Kim
- Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, Honolulu, HI, United States
| | - Ruben Juarez
- Department of Economics, University of Hawaii at Manoa, Honolulu, HI, United States.,University of Hawaii Economic Research Organization (UHERO), University of Hawaii at Manoa, Honolulu, HI, United States
| | - Alika K Maunakea
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI, United States.,Department of Anatomy, Biochemistry, and Physiology, John A. Burns School of Medicine, Honolulu, HI, United States
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