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Moadi L, Turjeman S, Asulin N, Koren O. The effect of testosterone on the gut microbiome in mice. Commun Biol 2024; 7:880. [PMID: 39030253 PMCID: PMC11271554 DOI: 10.1038/s42003-024-06470-5] [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: 10/19/2023] [Accepted: 06/19/2024] [Indexed: 07/21/2024] Open
Abstract
The role of hormones in gut-brain crosstalk is largely elusive, but recent research supports specific changes in hormone levels correlated with the gut microbiota. An interesting but unstudied area in microbial endocrinology is the interplay between the microbiota and sex hormones. The aim of this study is to investigate the effect of testosterone and sex on the mouse gut microbiome. We use in vitro experiments to test direct effects of testosterone on bacteria in fecal samples collected from male and female mice pre- and post-puberty. Sex-specific microbial and metabolic differences surrounding puberty are also examined in vivo. We then explore effects of testosterone supplementation in vivo, characterizing microbiota and metabolomes of male and female mice. We detect sex-specific differences in microbiota and associated metabolites of mice post-puberty, but in vitro experiments reveal that testosterone only affects microbiota of fecal samples collected before puberty. Testosterone supplementation in vivo affects gut microbiota and metabolomes in both male and female mice. Taking our results from in vitro and in vivo experiments, we conclude that the shift in the microbiome after puberty is at least partially caused by the higher levels of sex hormones, mainly testosterone, in the host.
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Affiliation(s)
- Lelyan Moadi
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel
| | - Sondra Turjeman
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel
| | - Nofar Asulin
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel
| | - Omry Koren
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel.
- Kyung Hee University, Seoul, Republic of Korea.
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2
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García-Cabrerizo R, Cryan JF. A gut (microbiome) feeling about addiction: Interactions with stress and social systems. Neurobiol Stress 2024; 30:100629. [PMID: 38584880 PMCID: PMC10995916 DOI: 10.1016/j.ynstr.2024.100629] [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: 11/23/2023] [Revised: 02/29/2024] [Accepted: 03/17/2024] [Indexed: 04/09/2024] Open
Abstract
In recent years, an increasing attention has given to the intricate and diverse connection of microorganisms residing in our gut and their impact on brain health and central nervous system disease. There has been a shift in mindset to understand that drug addiction is not merely a condition that affects the brain, it is now being recognized as a disorder that also involves external factors such as the intestinal microbiota, which could influence vulnerability and the development of addictive behaviors. Furthermore, stress and social interactions, which are closely linked to the intestinal microbiota, are powerful modulators of addiction. This review delves into the mechanisms through which the microbiota-stress-immune axis may shape drug addiction and social behaviors. This work integrates preclinical and clinical evidence that demonstrate the bidirectional communication between stress, social behaviors, substance use disorders and the gut microbiota, suggesting that gut microbes might modulate social stress having a significance in drug addiction.
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Affiliation(s)
- Rubén García-Cabrerizo
- IUNICS, University of the Balearic Islands, Palma, Spain
- Health Research Institute of the Balearic Islands (IdISBa), Palma, Spain
- Department of Medicine, University of the Balearic Islands, Palma, Spain
| | - John F. Cryan
- APC Microbiome Ireland, University College Cork, Cork, Ireland
- Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
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3
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James D, Poveda C, Walton GE, Elmore JS, Linden B, Gibson J, Griffin BA, Robertson MD, Lewis MC. Do high-protein diets have the potential to reduce gut barrier function in a sex-dependent manner? Eur J Nutr 2024:10.1007/s00394-024-03407-w. [PMID: 38662018 DOI: 10.1007/s00394-024-03407-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 04/16/2024] [Indexed: 04/26/2024]
Abstract
PURPOSE Impaired gut barrier function is associated with systemic inflammation and many chronic diseases. Undigested dietary proteins are fermented in the colon by the gut microbiota which produces nitrogenous metabolites shown to reduce barrier function in vitro. With growing evidence of sex-based differences in gut microbiotas, we determined whether there were sex by dietary protein interactions which could differentially impact barrier function via microbiota modification. METHODS Fermentation systems were inoculated with faeces from healthy males (n = 5) and females (n = 5) and supplemented with 0.9 g of non-hydrolysed proteins sourced from whey, fish, milk, soya, egg, pea, or mycoprotein. Microbial populations were quantified using fluorescence in situ hybridisation with flow cytometry. Metabolite concentrations were analysed using gas chromatography, solid phase microextraction coupled with gas chromatography-mass spectrometry and ELISA. RESULTS Increased protein availability resulted in increased proteolytic Bacteroides spp (p < 0.01) and Clostridium coccoides (p < 0.01), along with increased phenol (p < 0.01), p-cresol (p < 0.01), indole (p = 0.018) and ammonia (p < 0.01), varying by protein type. Counts of Clostridium cluster IX (p = 0.03) and concentration of p-cresol (p = 0.025) increased in males, while females produced more ammonia (p = 0.02), irrespective of protein type. Further, we observed significant sex-protein interactions affecting bacterial populations and metabolites (p < 0.005). CONCLUSIONS Our findings suggest that protein fermentation by the gut microbiota in vitro is influenced by both protein source and the donor's sex. Should these results be confirmed through human studies, they could have major implications for developing dietary recommendations tailored by sex to prevent chronic illnesses.
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Affiliation(s)
- Daniel James
- Department of Food and Nutritional Sciences, University of Reading, Whiteknights Campus, Reading, RG6 6DZ, UK.
| | - Carlos Poveda
- Department of Food and Nutritional Sciences, University of Reading, Whiteknights Campus, Reading, RG6 6DZ, UK
| | - Gemma E Walton
- Department of Food and Nutritional Sciences, University of Reading, Whiteknights Campus, Reading, RG6 6DZ, UK
| | - J Stephen Elmore
- Department of Food and Nutritional Sciences, University of Reading, Whiteknights Campus, Reading, RG6 6DZ, UK
| | - Brandon Linden
- Department of Nutrition, Food & Exercise Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - John Gibson
- Food and Feed Innovations, Woodstock, Newcastle Rd, Woore, N Shropshire, CW3 95N, UK
| | - Bruce A Griffin
- Department of Nutrition, Food & Exercise Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - M Denise Robertson
- Department of Nutrition, Food & Exercise Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - Marie C Lewis
- Department of Food and Nutritional Sciences, University of Reading, Whiteknights Campus, Reading, RG6 6DZ, UK
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Ding M, Li B, Chen H, Ross RP, Stanton C, Zhao J, Chen W, Yang B. Bifidobacterium longum Subsp. infantis Promotes IgA Level of Growing Mice in a Strain-Specific and Intestinal Niche-Dependent Manner. Nutrients 2024; 16:1148. [PMID: 38674840 PMCID: PMC11054607 DOI: 10.3390/nu16081148] [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: 03/04/2024] [Revised: 04/06/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Throughout infancy, IgA is crucial for maintaining gut mucosal immunity. This study aims to determine whether supplementing newborn mice with eight different strains of Bifidobacterium longum subsp. infantis might regulate their IgA levels. The strains were gavaged to BALB/C female (n = 8) and male (n = 8) dams at 1-3 weeks old. Eight strains of B. longum subsp. infantis had strain-specific effects in the regulation of intestinal mucosal barriers. B6MNI, I4MI, and I10TI can increase the colonic IgA level in females and males. I8TI can increase the colonic IgA level in males. B6MNI was also able to significantly increase the colonic sIgA level in females. B6MNI, I4MI, I8TI, and I10TI regulated colonic and Peyer's patch IgA synthesis genes but had no significant effect on IgA synthesis pathway genes in the jejunum and ileum. Moreover, the variety of sIgA-coated bacteria in male mice was changed by I4MI, I5TI, I8TI, and B6MNI. These strains also can decrease the relative abundance of Escherichia coli. These results indicate that B. longum subsp. infantis can promote IgA levels but show strain specificity. Different dietary habits with different strains of Bifidobacterium may have varying effects on IgA levels when supplemented in early infancy.
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Affiliation(s)
- Mengfan Ding
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; (M.D.); (B.L.); (H.C.); (J.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Bowen Li
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; (M.D.); (B.L.); (H.C.); (J.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Haiqin Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; (M.D.); (B.L.); (H.C.); (J.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Reynolds Paul Ross
- International Joint Research Center for Probiotics & Gut Health, Jiangnan University, Wuxi 214122, China; (R.P.R.); (C.S.)
- APC Microbiome Ireland, University College Cork, T12 R229 Cork, Ireland
| | - Catherine Stanton
- International Joint Research Center for Probiotics & Gut Health, Jiangnan University, Wuxi 214122, China; (R.P.R.); (C.S.)
- APC Microbiome Ireland, University College Cork, T12 R229 Cork, Ireland
- Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; (M.D.); (B.L.); (H.C.); (J.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, China
| | - Wei Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; (M.D.); (B.L.); (H.C.); (J.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, China
| | - Bo Yang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; (M.D.); (B.L.); (H.C.); (J.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- International Joint Research Center for Probiotics & Gut Health, Jiangnan University, Wuxi 214122, China; (R.P.R.); (C.S.)
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5
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Revankar NA, Negi PS. Biotics: An emerging food supplement for health improvement in the era of immune modulation. Nutr Clin Pract 2024; 39:311-329. [PMID: 37466413 DOI: 10.1002/ncp.11036] [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: 12/08/2022] [Revised: 05/27/2023] [Accepted: 06/06/2023] [Indexed: 07/20/2023] Open
Abstract
The involvement of the commensal microbiota in immune function is a multifold process. Biotics, such as probiotics, prebiotics, synbiotics, and paraprobiotics, have been subjected to animal and human trials demonstrating the association between gut microbes and immunity biomarkers leading to improvement in overall health. In recent years, studies on human microbiome interaction have established the multifarious role of biotics in maintaining overall health. The consumption of biotics has been extensively reported to help in maintaining microbial diversity, enhancing gut-associated mucosal immune homeostasis, and providing protection against a wide range of lifestyle disorders. However, the establishment of biotics as an alternative therapy for a range of health conditions is yet to be ascertained. Despite the fact that scientific literature has demonstrated the correlation between biotics and immune modulation, most in vivo and in vitro reports are inconclusive on the dosage required. This review provides valuable insights into the immunomodulatory effects of biotics consumption based on evidence obtained from animal models and clinical trials. Furthermore, we highlight the optimal dosages of biotics that have been reported to deliver maximum health benefits. By identifying critical research gaps, we have suggested a roadmap for future investigations to advance our understanding of the intricate crosstalk between biotics and immune homeostasis.
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Affiliation(s)
- Neelam A Revankar
- Department of Fruit and Vegetables Technology, CSIR-Central Food Technological Research Institute, Mysuru, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Pradeep S Negi
- Department of Fruit and Vegetables Technology, CSIR-Central Food Technological Research Institute, Mysuru, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Komodromou I, Andreou E, Vlahoyiannis A, Christofidou M, Felekkis K, Pieri M, Giannaki CD. Exploring the Dynamic Relationship between the Gut Microbiome and Body Composition across the Human Lifespan: A Systematic Review. Nutrients 2024; 16:660. [PMID: 38474787 PMCID: PMC10934951 DOI: 10.3390/nu16050660] [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: 01/31/2024] [Revised: 02/20/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
This systematic review aimed to identify different gut microbiome profiles across the human lifespan and to correlate such profiles with the body composition. PubMed, Scopus, and Cochrane were searched from inception to March 2022. Sixty studies were included in this systematic review. Overall, the gut microbiome composition in overweight participants exhibited decreased α-diversity, decreased levels of the phylum Bacteroidetes and its taxa, and increased levels of the phylum Firmicutes, its taxa, and the Firmicutes/Bacteroidetes ratio, in comparison to normal-weight participants. Other body composition parameters showed similar correlations. Fat mass and waist circumference were found to correlate positively with the Firmicutes taxa and negatively with the Bacteroidetes taxa. In contrast, lean body mass and muscle mass demonstrated a positive correlation with the Bacteroidetes taxa. Notably, these correlations were more pronounced in athletes than in obese and normal-weight individuals. The composition of the gut microbiome is evidently different in overweight individuals or athletes of all age groups, with the former tending towards decreased Bacteroidetes taxa and increased Firmicutes taxa, while a reversed relationship is observed concerning athletes. Further studies are needed to explore the dynamic relationship between energy intake, body composition, and the gut microbiome across the human lifespan.
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Affiliation(s)
- Ifigeneia Komodromou
- Department of Life Sciences, School of Life and Health Sciences, University of Nicosia, 2417 Nicosia, Cyprus; (I.K.); (E.A.); (A.V.); (M.C.); (K.F.); (M.P.)
| | - Eleni Andreou
- Department of Life Sciences, School of Life and Health Sciences, University of Nicosia, 2417 Nicosia, Cyprus; (I.K.); (E.A.); (A.V.); (M.C.); (K.F.); (M.P.)
- Research Centre for Exercise and Nutrition (RECEN), 2417 Nicosia, Cyprus
| | - Angelos Vlahoyiannis
- Department of Life Sciences, School of Life and Health Sciences, University of Nicosia, 2417 Nicosia, Cyprus; (I.K.); (E.A.); (A.V.); (M.C.); (K.F.); (M.P.)
- Research Centre for Exercise and Nutrition (RECEN), 2417 Nicosia, Cyprus
| | - Maria Christofidou
- Department of Life Sciences, School of Life and Health Sciences, University of Nicosia, 2417 Nicosia, Cyprus; (I.K.); (E.A.); (A.V.); (M.C.); (K.F.); (M.P.)
| | - Kyriacos Felekkis
- Department of Life Sciences, School of Life and Health Sciences, University of Nicosia, 2417 Nicosia, Cyprus; (I.K.); (E.A.); (A.V.); (M.C.); (K.F.); (M.P.)
- Research Centre for Exercise and Nutrition (RECEN), 2417 Nicosia, Cyprus
| | - Myrtani Pieri
- Department of Life Sciences, School of Life and Health Sciences, University of Nicosia, 2417 Nicosia, Cyprus; (I.K.); (E.A.); (A.V.); (M.C.); (K.F.); (M.P.)
- Research Centre for Exercise and Nutrition (RECEN), 2417 Nicosia, Cyprus
| | - Christoforos D. Giannaki
- Department of Life Sciences, School of Life and Health Sciences, University of Nicosia, 2417 Nicosia, Cyprus; (I.K.); (E.A.); (A.V.); (M.C.); (K.F.); (M.P.)
- Research Centre for Exercise and Nutrition (RECEN), 2417 Nicosia, Cyprus
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Ding M, Li B, Chen H, Ross RP, Stanton C, Jiang S, Zhao J, Chen W, Yang B. Bifidobacterium longum subsp. infantis regulates Th1/Th2 balance through the JAK-STAT pathway in growing mice. MICROBIOME RESEARCH REPORTS 2024; 3:16. [PMID: 38841405 PMCID: PMC11149089 DOI: 10.20517/mrr.2023.64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/11/2024] [Accepted: 01/16/2024] [Indexed: 06/07/2024]
Abstract
Objectives: Bifidobacterium longum subsp. infantis is a dominant bacterium in infant gut, which plays a critical role in maintaining the health and development of infants. This study investigated the abilities of eight different strains of B. longum subsp. infantis to regulate the T helper (Th)1/Th2 balance. Methods: Eight B. longum subsp. infantis strains, including I2MI (FJSWXI2MIM1), I4MI [FJSWXI4MI (CCFM1270)], I4MNI (FJSWXI4MNIM1), I5TI (FJSWXI5TIM1), I6TI (FJSWXI6TIM1), I8TI [FJSWXI8TI (CCFM1271)], I10TI [FJSWXI10TI (CCFM1272)], and B6MNI [BJSWXB6MNIM1 (CCFM1269)], were gavaged to BALB/C pups in both female (n = 8) and male (n = 8) mice starting from 1 to 3 weeks old (1 × 109 CFU/day/mice). Selected immune cells were assessed by immunofluorescence and flow cytometry. Cytokines and immunoglobulins were determined by ELISA. Bacterial and bifidobacterial communities were determined by 16S rRNA gene sequencing and bifidobacterial groEL sequencing. Results: B. longum subsp. infantis I4MI and I8TI were shown to increase the ration of colonic IgG2a/IgE in male mice (P < 0.05). B6MNI was demonstrated to significantly increase the levels of colonic IFN-γ and IgG2a, as well as the ratio of IgG2a/IgE in female mice (P < 0.05). It was also shown to significantly increase the ratio of colonic IgG2a/IgE (P < 0.05) and reduce the level of colonic IL-4 in male mice (P < 0.05). Furthermore, B6MNI was demonstrated to regulate colonic JAK/STAT pathway in both male and female mice. I4MI, I5TI, and B6MNI were shown to increase the relative abundance of Bifidobacterium and B. longum subsp. infantis in both male and female mice, whereas I8TI was only shown to increase the relative abundance of Bifidobacterium and B. longum subsp. infantis in male mice (P < 0.05). Conclusion: These results indicated supplementation with B. longum subsp. infantis in early infancy may regulate the Th1/Th2 immune balance, which may prevent the development of related diseases.
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Affiliation(s)
- Mengfan Ding
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, Jiangsu, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Bowen Li
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, Jiangsu, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Haiqin Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, Jiangsu, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - R. Paul Ross
- International Joint Research Center for Probiotics & Gut Health, Jiangnan University, Wuxi 214122, Jiangsu, China
- APC Microbiome Ireland, University College Cork, Cork T12 R229, Ireland
| | - Catherine Stanton
- International Joint Research Center for Probiotics & Gut Health, Jiangnan University, Wuxi 214122, Jiangsu, China
- APC Microbiome Ireland, University College Cork, Cork T12 R229, Ireland
- Teagasc Food Research Centre, Moorepark, Co. Cork P61 C996, Ireland
| | - Shilong Jiang
- Nutrition and Metabolism Research Division, Innovation Center, Heilongjiang Feihe Dairy Co., Ltd, Beijing 100015, China
- PKUHSC-China Feihe Joint Research Institute of Nutrition and Healthy Lifespan Development, Beijing 100083, China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, Jiangsu, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Wei Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, Jiangsu, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Bo Yang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, Jiangsu, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
- International Joint Research Center for Probiotics & Gut Health, Jiangnan University, Wuxi 214122, Jiangsu, China
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8
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Gao XF, Wu BB, Pan YL, Zhou SM, Zhang M, You YH, Cai YP, Liang Y. Gut microbiome biomarkers in adolescent obesity: a regional study. Health Inf Sci Syst 2023; 11:37. [PMID: 37602197 PMCID: PMC10435439 DOI: 10.1007/s13755-023-00236-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 07/18/2023] [Indexed: 08/22/2023] Open
Abstract
Purpose This study aimed to characterize the gut microbiota in obese adolescents from Shenzhen (China), and evaluate influence of gender on BMI-related differences in the gut microbiome. Methods Evaluation of physical examination, blood pressure measurement, serological assay and body composition were conducted in 205 adolescent subjects at Shenzhen. Fecal microbiome composition was profiled via high-throughput sequencing of the V3-V4 regions of the 16S rRNA gene. A Random Forest (RF) classifier model was built to distinguish the BMI categories based on the gut bacterial composition. Results Fifty-six taxa consisting mainly of Firmicutes were identified that having significant associations with BMI; 2 OTUs belonging to Ruminococcaceae and 1 belonging to Lachnospiraceae had relatively strong positive correlations with body fate rate, waistline and most of serum biochemical properties. Based on the 56 BMI-associated OTUs, the RF model showed a robust classification accuracy (AUC 0.96) for predicting the obese phenotype. Gender-specific differences in the gut microbiome composition was obtained, and a lower relative abundance of Odoribacter genus was particularly found in obese boys. Functional analysis revealed a deficiency in bacterial gene contents related to peroxisome and PPAR signaling pathway in the obese subjects for both genders. Conclusions This study reveals unique features of gut microbiome in terms of microbial composition and metabolic functions in obese adolescents, and provides a baseline for reference and comparison studies. Supplementary Information The online version contains supplementary material available at 10.1007/s13755-023-00236-9.
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Affiliation(s)
- Xue-Feng Gao
- Integrative Microecology Clinical Center, Shenzhen Key Laboratory of Gastrointestinal Microbiota and Disease, Shenzhen Clinical Research Center for Digestive Disease, Shenzhen Technology Research Center of Gut Microbiota Transplantation, Shenzhen Hospital, Southern Medical University, Shenzhen, China
- Central Laboratory, Shenzhen Key Laboratory of Precision Medicine for Hematological Malignancies, Shenzhen University General Hospital, Shenzhen, China
| | - Bin-Bin Wu
- Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Yong-Long Pan
- Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Shao-Ming Zhou
- Department of Gastroenterology, Shenzhen Children’s Hospital, Shenzhen, China
| | - Ming Zhang
- Department of Nutrition, Peking University Shenzhen Hospital, Shenzhen, China
| | - Yue-Hua You
- Department of Stomatology, Longhua People’s Hospital Affiliated to Southern Medical University, Shenzhen, 518109 Guangdong China
- School of Stomatology, Southern Medical University, Guangzhou, 510515 Guangdong China
- Key Laboratory of Oral Microbiology and Medical Transformation of Shenzhen Longhua District, Shenzhen, China
| | - Yun-Peng Cai
- Research Center for Biomedical Information Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Yan Liang
- School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu, China
- ShenSi Lab, Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Shenzhen, China
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9
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Ribeiro PVDM, Veloso TG, de Oliveira LL, Mendes NP, Alfenas RDCG. Consumption of yacon flour and energy-restricted diet increased the relative abundance of intestinal bacteria in obese adults. Braz J Microbiol 2023; 54:3085-3099. [PMID: 37807018 PMCID: PMC10689717 DOI: 10.1007/s42770-023-01140-w] [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: 04/13/2023] [Accepted: 09/26/2023] [Indexed: 10/10/2023] Open
Abstract
Prebiotics can alter the gastrointestinal environment, favoring the growth of health-promoting bacteria. Although yacon is a functional food, with prebiotic properties (fructooligosaccharides), its effects on the intestinal microbiota have not been investigated yet. The objective of this study was to evaluate the effects of yacon flour consumption and energy-restricted diet in the intestinal microbiota in adults with excess body weight. Twenty-one adults with excess body weight were included in this randomized, parallel, double-blind, placebo-controlled, 6-week clinical trial. Subjects daily consumed at breakfast a drink containing 25 g of yacon flour (n = 11) or not containing yacon (n = 10) and received the prescription of energy-restricted diets. Fecal samples were collected on the first and on last day of the study. 16S rRNA sequencing was assessed to evaluate the effect of yacon fermentation on intestinal microbiota bacterial composition. There was an increase in the genera Bifidobacterium, Blautia, Subdoligranulum, and Streptococcus after the consumption of yacon and energy-restricted diet. In the yacon group, we also observed a positive correlation between the concentrations of short-chain fatty acids versus the genera Coprococcus and Howardella, besides a negative correlation between the concentrations of advanced glycation end products and early glycation products versus the genera Ruminococcus and Prevotella, respectively. Consumption of yacon flour and energy-restricted diet selectively changed the intestinal microbiota composition in adults with excess body weight. TRIAL REGISTRATION: Register number: RBR-6YH6BQ. Registered 23 January, 2018.
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Affiliation(s)
- Priscila Vaz de Melo Ribeiro
- Department of Nutrition and Health, Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Tomas Gomes Veloso
- Department of Microbiology, Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Leandro Licursi de Oliveira
- Department of General Biology, Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Nélia Pinheiro Mendes
- Department of Nutrition and Health, Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - Rita de Cássia Gonçalves Alfenas
- Department of Nutrition and Health, Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Campus Universitário, Viçosa, Minas Gerais, 36570-900, Brazil
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10
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Bucurica S, Lupanciuc M, Ionita-Radu F, Stefan I, Munteanu AE, Anghel D, Jinga M, Gaman EL. Estrobolome and Hepatocellular Adenomas-Connecting the Dots of the Gut Microbial β-Glucuronidase Pathway as a Metabolic Link. Int J Mol Sci 2023; 24:16034. [PMID: 38003224 PMCID: PMC10671049 DOI: 10.3390/ijms242216034] [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: 10/08/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
Hepatocellular adenomas are benign endothelial tumors of the liver, mostly associated with female individual users of estrogen-containing medications. However, the precise factors underlying the selective development of hepatic adenomas in certain females remain elusive. Additionally, the conventional profile of individuals prone to hepatic adenoma is changing. Notably, male patients exhibit a higher risk of malignant progression of hepatocellular adenomas, and there are instances where hepatic adenomas have no identifiable cause. In this paper, we theorize the role of the human gastrointestinal microbiota, specifically, of bacterial species producing β-glucuronidase enzymes, in the development of hepatic adenomas through the estrogen recycling pathway. Furthermore, we aim to address some of the existing gaps in our knowledge of pathophysiological pathways which are not yet subject to research or need to be studied further. As microbial β-glucuronidases proteins recycle estrogen and facilitate the conversion of inactive estrogen into its active form, this process results in elevated levels of unbound plasmatic estrogen, leading to extended exposure to estrogen. We suggest that an imbalance in the estrobolome could contribute to sex hormone disease evolution and, consequently, to the advancement of hepatocellular adenomas, which are estrogen related.
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Affiliation(s)
- Sandica Bucurica
- Department of Gastroenterology, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania;
- Department of Gastroenterology, “Dr. Carol Davila” Central Military Emergency University Hospital, 010242 Bucharest, Romania;
| | - Mihaela Lupanciuc
- Department of Gastroenterology, “Dr. Carol Davila” Central Military Emergency University Hospital, 010242 Bucharest, Romania;
| | - Florentina Ionita-Radu
- Department of Gastroenterology, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania;
- Department of Gastroenterology, “Dr. Carol Davila” Central Military Emergency University Hospital, 010242 Bucharest, Romania;
| | - Ion Stefan
- Department of Infectious Diseases, “Dr. Carol Davila” Central Military Emergency University Hospital, 010242 Bucharest, Romania;
- Department of Medico-Surgical and Prophylactic Disciplines, Titu Maiorescu University, 031593 Bucharest, Romania; (A.E.M.); (D.A.)
| | - Alice Elena Munteanu
- Department of Medico-Surgical and Prophylactic Disciplines, Titu Maiorescu University, 031593 Bucharest, Romania; (A.E.M.); (D.A.)
- Department of Cardiology, “Dr. Carol Davila” Central Military Emergency University Hospital, 010242 Bucharest, Romania
| | - Daniela Anghel
- Department of Medico-Surgical and Prophylactic Disciplines, Titu Maiorescu University, 031593 Bucharest, Romania; (A.E.M.); (D.A.)
- Department of Internal Medicine, “Dr. Carol Davila” Central Military Emergency University Hospital, 010242 Bucharest, Romania
| | - Mariana Jinga
- Department of Gastroenterology, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania;
- Department of Gastroenterology, “Dr. Carol Davila” Central Military Emergency University Hospital, 010242 Bucharest, Romania;
| | - Elena Laura Gaman
- Department of Biochemistry, “Carol Davila” University of Medicine and Pharmacy Bucharest, 020021 Bucharest, Romania;
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11
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Sisk-Hackworth L, Brown J, Sau L, Levine AA, Tam LYI, Ramesh A, Shah RS, Kelley-Thackray ET, Wang S, Nguyen A, Kelley ST, Thackray VG. Genetic hypogonadal mouse model reveals niche-specific influence of reproductive axis and sex on intestinal microbial communities. Biol Sex Differ 2023; 14:79. [PMID: 37932822 PMCID: PMC10626657 DOI: 10.1186/s13293-023-00564-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/23/2023] [Indexed: 11/08/2023] Open
Abstract
BACKGROUND The gut microbiome has been linked to many diseases with sex bias including autoimmune, metabolic, neurological, and reproductive disorders. While numerous studies report sex differences in fecal microbial communities, the role of the reproductive axis in this differentiation is unclear and it is unknown how sex differentiation affects microbial diversity in specific regions of the small and large intestine. METHODS We used a genetic hypogonadal mouse model that does not produce sex steroids or go through puberty to investigate how sex and the reproductive axis impact bacterial diversity within the intestine. Using 16S rRNA gene sequencing, we analyzed alpha and beta diversity and taxonomic composition of fecal and intestinal communities from the lumen and mucosa of the duodenum, ileum, and cecum from adult female (n = 20) and male (n = 20) wild-type mice and female (n = 17) and male (n = 20) hypogonadal mice. RESULTS Both sex and reproductive axis inactivation altered bacterial composition in an intestinal section and niche-specific manner. Hypogonadism was significantly associated with bacteria from the Bacteroidaceae, Eggerthellaceae, Muribaculaceae, and Rikenellaceae families, which have genes for bile acid metabolism and mucin degradation. Microbial balances between males and females and between hypogonadal and wild-type mice were also intestinal section-specific. In addition, we identified 3 bacterial genera (Escherichia Shigella, Lachnoclostridium, and Eggerthellaceae genus) with higher abundance in wild-type female mice throughout the intestinal tract compared to both wild-type male and hypogonadal female mice, indicating that activation of the reproductive axis leads to female-specific differentiation of the gut microbiome. Our results also implicated factors independent of the reproductive axis (i.e., sex chromosomes) in shaping sex differences in intestinal communities. Additionally, our detailed profile of intestinal communities showed that fecal samples do not reflect bacterial diversity in the small intestine. CONCLUSIONS Our results indicate that sex differences in the gut microbiome are intestinal niche-specific and that sampling feces or the large intestine may miss significant sex effects in the small intestine. These results strongly support the need to consider both sex and reproductive status when studying the gut microbiome and while developing microbial-based therapies.
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Affiliation(s)
- Laura Sisk-Hackworth
- University of California San Diego, La Jolla, CA, USA
- San Diego State University, San Diego, CA, USA
| | - Jada Brown
- University of California San Diego, La Jolla, CA, USA
| | - Lillian Sau
- University of California San Diego, La Jolla, CA, USA
| | | | | | | | - Reeya S Shah
- University of California San Diego, La Jolla, CA, USA
| | | | - Sophia Wang
- University of California San Diego, La Jolla, CA, USA
| | - Anita Nguyen
- University of California San Diego, La Jolla, CA, USA
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12
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Nitzan Z, Staun-Ram E, Volkowich A, Miller A. Multiple Sclerosis-Associated Gut Microbiome in the Israeli Diverse Populations: Associations with Ethnicity, Gender, Disability Status, Vitamin D Levels, and Mediterranean Diet. Int J Mol Sci 2023; 24:15024. [PMID: 37834472 PMCID: PMC10573818 DOI: 10.3390/ijms241915024] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/19/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Microbiome dysbiosis is increasingly being recognized as implicated in immune-mediated disorders including multiple sclerosis (MS). The microbiome is modulated by genetic and environmental factors including lifestyle, diet, and drug intake. This study aimed to characterize the MS-associated gut microbiome in the Israeli populations and to identify associations with demographic, dietary, and clinical features. The microbiota from 57 treatment-naive patients with MS (PwMS) and 43 age- and gender-matched healthy controls (HCs) was sequenced and abundance compared. Associations between differential microbes with demographic or clinical characteristics, as well as diet and nutrient intake, were assessed. While there was no difference in α- or β-diversity of the microbiome, we identified 40 microbes from different taxonomic levels that differ in abundance between PwMS and HCs, including Barnesiella, Collinsella, Egerthella, Mitsuokella, Olsenella Romboutsia, and Succinivibrio, all enhanced in PwMS, while several members of Lacnospira were reduced. Additional MS-differential microbes specific to ethnicity were identified. Several MS-specific microbial patterns were associated with gender, vitamin D level, Mediterranean diet, nutrient intake, or disability status. Thus, PwMS have altered microbiota composition, with distinctive patterns related to geographic locations and population. Microbiome dysbiosis seem to be implicated in disease progression, gender-related differences, and vitamin D-mediated immunological effects recognized in MS. Dietary interventions may be beneficial in restoring a "healthy microbiota" as part of applying comprehensive personalized therapeutic strategies for PwMS.
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Affiliation(s)
- Zehavit Nitzan
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 3109601, Israel (E.S.-R.)
| | - Elsebeth Staun-Ram
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 3109601, Israel (E.S.-R.)
- Neuroimmunology Unit & Multiple Sclerosis Center, Lady Davis Carmel Medical Center, Haifa 3436212, Israel
| | - Anat Volkowich
- Neuroimmunology Unit & Multiple Sclerosis Center, Lady Davis Carmel Medical Center, Haifa 3436212, Israel
| | - Ariel Miller
- Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa 3109601, Israel (E.S.-R.)
- Neuroimmunology Unit & Multiple Sclerosis Center, Lady Davis Carmel Medical Center, Haifa 3436212, Israel
- Department of Neurology, Lady Davis Carmel Medical Center, Haifa 3436212, Israel
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13
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Duan Z, Fu J, Zhang F, Cai Y, Wu G, Ma W, Zhou H, He Y. The association between BMI and serum uric acid is partially mediated by gut microbiota. Microbiol Spectr 2023; 11:e0114023. [PMID: 37747198 PMCID: PMC10581133 DOI: 10.1128/spectrum.01140-23] [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: 03/15/2023] [Accepted: 07/20/2023] [Indexed: 09/26/2023] Open
Abstract
Obesity is a risk factor for the development of hyperuricemia, both of which were related to gut microbiota. However, whether alterations in the gut microbiota lie in the pathways mediating obesity's effects on hyperuricemia is less clear. Body mass index (BMI) and serum uric acid (SUA) were separately important indicators of obesity and hyperuricemia. Our study aims to investigate whether BMI-related gut microbiota characteristics would mediate the association between BMI and SUA levels. A total of 6,280 participants from Guangdong Gut Microbiome Project were included in this study. Stool samples were collected for 16S rRNA gene sequencing. The results revealed that BMI was significantly and positively associated with SUA. Meanwhile, BMI was significantly associated with the abundance of 102 gut microbial genera, 16 of which were also significantly associated with SUA. The mediation analysis revealed that the association between BMI and SUA was partially mediated by the abundance of Proteobacteria (proportion mediated: 0.94%, P < 0.05). At the genus level, 25 bacterial genera, including Ralstonia, Oscillospira, Faecalibacterium, etc., could also partially mediate the association of BMI with SUA (the highest proportion is mediated by Ralstonia, proportion mediated: 2.76%, P < 0.05). This study provided evidence for the associations among BMI, gut microbiota, and SUA, and the mediation analysis suggested that the association of BMI with SUA was partially mediated by the gut microbiota. IMPORTANCE Using 16S rRNA sequencing analysis, local interpretable machine learning technique analysis and mediation analysis were used to explore the association between BMI with SUA, and the mediating effects of gut microbial dysbiosis in the association were investigated.
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Affiliation(s)
- Zhuo Duan
- Department of Laboratory Medicine, Microbiome Medicine Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jingxiang Fu
- Department of Laboratory Medicine, Microbiome Medicine Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Feng Zhang
- Department of Laboratory Medicine, Microbiome Medicine Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yijia Cai
- Department of Laboratory Medicine, Microbiome Medicine Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Guangyan Wu
- Department of Laboratory Medicine, Microbiome Medicine Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Wenjun Ma
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Centre for Disease Control and Prevention, Guangzhou, Guangdong, China
| | - Hongwei Zhou
- Department of Laboratory Medicine, Microbiome Medicine Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yan He
- Department of Laboratory Medicine, Microbiome Medicine Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangdong Provincial Clinical Research Center for Laboratory Medicine, Guangzhou, Guangdong, China
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14
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Sun K, Gao Y, Wu H, Huang X. The causal relationship between gut microbiota and type 2 diabetes: a two-sample Mendelian randomized study. Front Public Health 2023; 11:1255059. [PMID: 37808975 PMCID: PMC10556527 DOI: 10.3389/fpubh.2023.1255059] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 09/04/2023] [Indexed: 10/10/2023] Open
Abstract
Background Type 2 diabetes mellitus (T2DM) is a commonly observed metabolic anomaly globally, and as of the present time, there's no recognized solution. There is an increasing body of evidence from numerous observational studies indicating a significant correlation between gut flora and metabolic disease progression, particularly in relation to T2DM. Despite this, the direct impact of gut microbiota on T2DM isn't fully understood yet. Methods The summary statistical figures for intestinal microbiota were sourced from the MiBioGen consortium, while the summary statistical data for T2DM were gathered from the Genome-Wide Association Studies (GWAS) database. These datasets were used to execute a two-sample Mendelian randomization (MR) investigation. The Inverse Variance Weighted (IVW), Maximum Likelihood, MR-Egger, Weighted Median, and Weighted Models strategies were employed to assess the impact of gut microbiota on T2DM. Findings were primarily obtained using the IVW technique. Techniques like MR-Egger were employed to identify the occurrence of horizontal pleiotropy among instrumental variables. Meanwhile, Cochran's Q statistical measures were utilized to assess the variability or heterogeneity within these instrumental variables. Results The outcomes from the IVW analysis demonstrated that the genus Alistipes (OR = 0.998, 95% confidence interval: 0.996-1.000, and P = 0.038), genus Allisonella (OR = 0.998, 95% confidence interval: 0.997-0.999, P = 0.033), genus Flavonifractor (OR = 0.995, 95% confidence interval: 0.993-0.998, P = 3.78 × 10-3), and genus Haemophilus (OR = 0.995, 95% confidence interval: 0.993-0.998, P = 8.08 × 10-3) all acted as defense elements against type 2 diabetes. Family Clostridiaceae1 (OR = 1.003, 95% confidence interval: 1.001-1.005, P = 0.012), family Coriobacteriaceae (OR = 1.0025, 95% confidence interval: 1.000-1.005, P = 0.043), genus Actinomyces (OR = 1.003,95% confidence interval: 1.001-1.005, P = 4.38 × 10-3), genus Candidatus Soleaferrea (OR = 1.001,95% confidence interval: 1.000-1.002 P = 0.012) were risk factors for type 2 diabetes. False Discovery Rate correction was performed with finding that genus.Allisonella, genus.Alistipes, family Coriobacteriaceaeand T2DM no longer displayed a significant causal association. In addition, no significant heterogeneity or horizontal pleiotropy was found for instrumental variable. Conclusion This MR study relies on genetic variation tools to confirm the causal effect of genus Flavonifractor, genus Haemophilus, family Clostridiaceae1, genus Actinomyces and genus Candidatus Soleaferrea on T2DM in the gut microbiome, providing new directions and strategies for the treatment and early screening of T2DM, which carries significant clinical relevance. To develop new biomarkers and better understand targeted prevention strategies for T2DM, further comprehensive investigations are required into the protective and detrimental mechanisms exerted by these five genera against T2DM.
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Affiliation(s)
- Kewang Sun
- School of Medical Laboratory, Weifang Medical College, Weifang, China
- Department of Blood Transfusion, The 960th Hospital of the PLA Jonit Logistics Support Force, Jinan, China
| | - Yan Gao
- Department of General Medicine, The 960th Hospital of the PLA Jonit Logistics Support Force, Jinan, China
| | - Huaqing Wu
- School of Mathematics and Statistics, Beijing Technology and Business University, Beijing, China
| | - Xiangyan Huang
- Department of Blood Transfusion, The 960th Hospital of the PLA Jonit Logistics Support Force, Jinan, China
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15
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Jabri H, Krings S, Fall PA, Baurain D, Daube G, Taminiau B. Microbiota Profiling on Veterinary Faculty Restroom Surfaces and Source Tracking. Microorganisms 2023; 11:2053. [PMID: 37630613 PMCID: PMC10459056 DOI: 10.3390/microorganisms11082053] [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: 07/10/2023] [Revised: 08/02/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
In this study, we aimed to develop a comprehensive microbial source amplicon database tailored for source tracking in veterinary settings. We rigorously tested our locally curated source tracking database by selecting a frequently accessed environment by veterinary students and veterinarians. By exploring the composition of resident microbiota and identifying potential sources of contamination, including animals, the environment, and human beings, we aimed to provide valuable insights into the dynamics of microbial transmission within veterinary facilities. The 16S rDNA amplicon sequencing was used to determine the bacterial taxonomic profiles of restroom surfaces. Bacterial sources were identified by linking our metadata-enriched local database to the microbiota profiling analysis using high-quality sequences. Microbiota profiling shows the dominance of four phyla: Actinobacteria, Bacteroidetes, Proteobacteria, and Firmicutes. If the restroom cleaning process did not appear to impact microbiota composition, significant differences regarding bacterial distribution were observed between male and female users in different sampling campaigns. Combining 16S rDNA profiling to our specific sources labeling pipeline, we found aquatic and human sources were the primary environment keywords in our campaigns. The probable presence of known animal sources (bovids, insects, equids, suids…) associated with bacterial genera such as Chryseobacterium, Bergeyella, Fibrobacter, and Syntrophococcus was also involved in restroom surfaces, emphasizing the proximity between these restrooms and the exchange of bacteria between people involved in animals handling. To summarize, we have demonstrated that DNA sequence-based source tracking may be integrated with high-throughput bacterial community analysis to enrich microbial investigation of potential bacterial contamination sources, especially for little known or poorly identified taxa. However, more research is needed to determine the tool's utility in other applications.
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Affiliation(s)
- Hiba Jabri
- Laboratory of Food Microbiology, Fundamental and Applied Research for Animals and Health Center (FARAH), Department of Food Sciences, Faculty of Veterinary Medicine, University of Liege, Quartier Vallée 2, B42, Avenue de Cureghem 10, 4000 Liège, Belgium; (H.J.); (G.D.)
| | - Simone Krings
- Department of Microbial Sciences, School of Biosciences, Faculty of Health and Medical Sciences, Univesity of Surrey, Guildford GU2 7XH, UK;
| | - Papa Abdoulaye Fall
- FoodChainID GENOMICS, Laboratory Manager NGS, Rue Hayeneux, 62, 4040 Herstal, Belgium;
| | - Denis Baurain
- Eukaryotic Phylogenomics, InBioS-PhytoSYSTEMS, University of Liège, 4000 Liège, Belgium;
| | - Georges Daube
- Laboratory of Food Microbiology, Fundamental and Applied Research for Animals and Health Center (FARAH), Department of Food Sciences, Faculty of Veterinary Medicine, University of Liege, Quartier Vallée 2, B42, Avenue de Cureghem 10, 4000 Liège, Belgium; (H.J.); (G.D.)
| | - Bernard Taminiau
- Laboratory of Food Microbiology, Fundamental and Applied Research for Animals and Health Center (FARAH), Department of Food Sciences, Faculty of Veterinary Medicine, University of Liege, Quartier Vallée 2, B42, Avenue de Cureghem 10, 4000 Liège, Belgium; (H.J.); (G.D.)
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16
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Bardhan P, Yang T. Sexual Dimorphic Interplays Between Gut Microbiota and Antihypertensive Drugs. Curr Hypertens Rep 2023; 25:163-172. [PMID: 37199902 PMCID: PMC10193343 DOI: 10.1007/s11906-023-01244-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2023] [Indexed: 05/19/2023]
Abstract
PURPOSE OF THE REVIEW The purpose of this study is to review the current literature regarding gut microbiota in blood pressure regulation and its interactions with antihypertensive drugs and to discuss how sex differences in gut microbiota contribute to sexual dimorphism of hypertension and treatment. RECENT FINDINGS The significance of gut microbiota in blood pressure regulation and hypertension etiology is growingly recognized. Targeting the dysbiotic microbiota is proposed to be a new therapeutic method. Recently, a few studies demonstrated that the gut microbiota is highly involved in the modulation of the efficacy of antihypertensive drugs, suggesting a novel mechanism by which gut microbiota plays a role in treatment-resistant hypertension. Furthermore, studies on sex differences in gut microbiota, etiology of hypertension, and sex bias in prescription of antihypertensive medications have revealed promising avenues in sexual dimorphism-based precision medicine. However, no scientific questions are ever raised on how sex differences in gut microbiota contribute to the sex specific responses of certain classes of antihypertensive drugs. Given the dynamics and complexity among individuals, precision medicine is proposed of great potential. We review current knowledge on the interactions between gut microbiota, hypertension, and antihypertensive drugs with an emphasis on sex as a crucial determinant. We propose that sex differences in gut microbiota be a research focus to advance our understanding of hypertension management.
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Affiliation(s)
- Pritam Bardhan
- Department of Physiology and Pharmacology, Center for Hypertension and Precision Medicine, College of Medicine and Life Sciences, The University of Toledo, Health Science Campus Block Health Science Bldg, Room 310, 3000 Arlington Ave., Toledo, OH, 43614, USA
| | - Tao Yang
- Department of Physiology and Pharmacology, Center for Hypertension and Precision Medicine, College of Medicine and Life Sciences, The University of Toledo, Health Science Campus Block Health Science Bldg, Room 310, 3000 Arlington Ave., Toledo, OH, 43614, USA.
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17
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Shaikh SD, Sun N, Canakis A, Park WY, Weber HC. Irritable Bowel Syndrome and the Gut Microbiome: A Comprehensive Review. J Clin Med 2023; 12:jcm12072558. [PMID: 37048642 PMCID: PMC10095554 DOI: 10.3390/jcm12072558] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 03/10/2023] [Accepted: 03/21/2023] [Indexed: 03/31/2023] Open
Abstract
Irritable Bowel Syndrome (IBS) is a functional disorder of the gastrointestinal tract characterized by abdominal pain and altered bowel habits. It has a prevalence of 10 to 25% in the United States and has a high disease burden, as evidenced by reduced quality of life, decreased work productivity and increased healthcare utilization and costs. IBS has been associated with several intra-intestinal and extra-intestinal conditions, including psychiatric comorbidities. Although the pathophysiology of IBS has not been fully elucidated, it involves dysregulation of communication between the brain and gut (brain–gut axis) which is associated with alterations in intestinal motility, gut permeability, visceral hypersensitivity and gut microbiota composition. The purpose of this article is to review the role the gut microbiota plays in the pathophysiology of IBS, understand factors that affect the gut microbiome and explore the microbiome as a target of treatment.
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18
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Fujisaka S, Watanabe Y, Tobe K. The gut microbiome: a core regulator of metabolism. J Endocrinol 2023; 256:e220111. [PMID: 36458804 PMCID: PMC9874984 DOI: 10.1530/joe-22-0111] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 12/02/2022] [Indexed: 12/03/2022]
Abstract
The human body is inhabited by numerous bacteria, fungi, and viruses, and each part has a unique microbial community structure. The gastrointestinal tract harbors approximately 100 trillion strains comprising more than 1000 bacterial species that maintain symbiotic relationships with the host. The gut microbiota consists mainly of the phyla Firmicutes, Bacteroidetes, Proteobacteria, and Actinobacteria. Of these, Firmicutes and Bacteroidetes constitute 70-90% of the total abundance. Gut microbiota utilize nutrients ingested by the host, interact with other bacterial species, and help maintain healthy homeostasis in the host. In recent years, it has become increasingly clear that a breakdown of the microbial structure and its functions, known as dysbiosis, is associated with the development of allergies, autoimmune diseases, cancers, and arteriosclerosis, among others. Metabolic diseases, such as obesity and diabetes, also have a causal relationship with dysbiosis. The present review provides a brief overview of the general roles of the gut microbiota and their relationship with metabolic disorders.
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Affiliation(s)
- Shiho Fujisaka
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Sugitani, Toyama, Japan
| | - Yoshiyuki Watanabe
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Sugitani, Toyama, Japan
| | - Kazuyuki Tobe
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Sugitani, Toyama, Japan
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19
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Gutierrez MW, Mercer EM, Moossavi S, Laforest-Lapointe I, Reyna ME, Becker AB, Simons E, Mandhane PJ, Turvey SE, Moraes TJ, Sears MR, Subbarao P, Azad MB, Arrieta MC. Maturational patterns of the infant gut mycobiome are associated with early-life body mass index. Cell Rep Med 2023; 4:100928. [PMID: 36736319 PMCID: PMC9975311 DOI: 10.1016/j.xcrm.2023.100928] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 10/24/2022] [Accepted: 01/06/2023] [Indexed: 02/05/2023]
Abstract
Unlike the bacterial microbiome, the role of early-life gut fungi in host metabolism and childhood obesity development remains poorly characterized. To address this, we investigate the relationship between the gut mycobiome of 100 infants from the Canadian Healthy Infant Longitudinal Development (CHILD) Cohort Study and body mass index Z scores (BMIz) in the first 5 years of life. An increase in fungal richness during the first year of life is linked to parental and infant BMI. The relationship between richness pattern and early-life BMIz is modified by maternal BMI, maternal diet, infant antibiotic exposure, and bacterial beta diversity. Further, the abundances of Saccharomyces, Rhodotorula, and Malassezia are differentially associated with early-life BMIz. Using structural equation modeling, we determine that the mycobiome's contribution to BMIz is likely mediated by the bacterial microbiome. This demonstrates that mycobiome maturation and infant growth trajectories are distinctly linked, advocating for inclusion of fungi in larger pediatric microbiome studies.
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Affiliation(s)
- Mackenzie W Gutierrez
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB T2N 1N4, Canada; Department of Pediatrics, University of Calgary, Calgary, AB T2N 1N4, Canada; International Microbiome Center, University of Calgary, Calgary, AB T2N 1N4, Canada; Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Emily M Mercer
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB T2N 1N4, Canada; Department of Pediatrics, University of Calgary, Calgary, AB T2N 1N4, Canada; International Microbiome Center, University of Calgary, Calgary, AB T2N 1N4, Canada; Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Shirin Moossavi
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB T2N 1N4, Canada; Department of Pediatrics, University of Calgary, Calgary, AB T2N 1N4, Canada; International Microbiome Center, University of Calgary, Calgary, AB T2N 1N4, Canada; Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB T2N 1N4, Canada
| | | | - Myrtha E Reyna
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, ON M5G 1X8, Canada
| | - Allan B Becker
- Children's Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada; Developmental Origins of Chronic Diseases in Children Network (DEVOTION), Winnipeg, MB, Canada; Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, MB R3E 3P4, Canada
| | - Elinor Simons
- Children's Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada; Developmental Origins of Chronic Diseases in Children Network (DEVOTION), Winnipeg, MB, Canada; Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, MB R3E 3P4, Canada
| | - Piush J Mandhane
- Department of Pediatrics, University of Alberta, Edmonton, AB T6G 2R7, Canada
| | - Stuart E Turvey
- Department of Pediatrics, BC Children's Hospital, University of British Columbia, Vancouver, BC V6H 3N1, Canada
| | - Theo J Moraes
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, ON M5G 1X8, Canada
| | - Malcolm R Sears
- Department of Medicine, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Padmaja Subbarao
- Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, ON M5G 1X8, Canada; Department of Physiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Meghan B Azad
- Children's Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada; Developmental Origins of Chronic Diseases in Children Network (DEVOTION), Winnipeg, MB, Canada; Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, MB R3E 3P4, Canada
| | - Marie-Claire Arrieta
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB T2N 1N4, Canada; Department of Pediatrics, University of Calgary, Calgary, AB T2N 1N4, Canada; International Microbiome Center, University of Calgary, Calgary, AB T2N 1N4, Canada; Snyder Institute for Chronic Diseases, University of Calgary, Calgary, AB T2N 1N4, Canada.
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20
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Zhong H, Liu S, Zhu J, Wu L. Associations between genetically predicted levels of blood metabolites and pancreatic cancer risk. Int J Cancer 2023; 153:103-110. [PMID: 36757187 DOI: 10.1002/ijc.34466] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 01/14/2023] [Accepted: 01/30/2023] [Indexed: 02/10/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the most aggressive solid malignancies, which is featured by systematic metabolism. Thus, a better understanding of metabolic dysregulation in PDAC is important to better characterize its etiology. Here, we performed a large metabolome-wide association study (MWAS) to systematically explore associations between genetically predicted metabolite levels in blood and PDAC risk. Using data from 881 subjects of European descent in the TwinsUK Project, comprehensive genetic models were built to predict serum metabolite levels. These prediction models were applied to the genetic data of 8275 cases and 6723 controls included in the PanScan (I, II and III) and PanC4 consortia. After assessing the metabolite-PDAC risk associations by a slightly modified TWAS/FUSION framework, we identified five metabolites (including two dipeptides) showing significant associations with PDAC risk at false discovery rate (FDR) <0.05. Integrated with gut microbial information, two-sample Mendelian randomization (MR) analyses were further performed to investigate the relationship among serum metabolites, gut microbiome features and PDAC. The flavonoid-degrading bacteria Flavonifractor sp90199495 was found to be associated with metabolite X-21849 and it was also shown to be associated with PDAC risk. Collectively, our study identified novel candidate metabolites for PDAC risk, which could lead to new insights into the etiology of PDAC and improved treatment options.
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Affiliation(s)
- Hua Zhong
- Cancer Epidemiology Division, Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Shuai Liu
- Cancer Epidemiology Division, Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Jingjing Zhu
- Cancer Epidemiology Division, Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, Honolulu, Hawaii, USA
| | - Lang Wu
- Cancer Epidemiology Division, Population Sciences in the Pacific Program, University of Hawaii Cancer Center, University of Hawaii at Manoa, Honolulu, Hawaii, USA
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21
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Sisk-Hackworth L, Kelley ST, Thackray VG. Sex, puberty, and the gut microbiome. Reproduction 2023; 165:R61-R74. [PMID: 36445259 PMCID: PMC9847487 DOI: 10.1530/rep-22-0303] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/28/2022] [Indexed: 11/30/2022]
Abstract
In brief Sex differences in the gut microbiome may impact multiple aspects of human health and disease. In this study, we review the evidence for microbial sex differences in puberty and adulthood and discuss potential mechanisms driving differentiation of the sex-specific gut microbiome. Abstract In humans, the gut microbiome is strongly implicated in numerous sex-specific physiological processes and diseases. Given this, it is important to understand how sex differentiation of the gut microbiome occurs and how these differences contribute to host health and disease. While it is commonly believed that the gut microbiome stabilizes after 3 years of age, our review of the literature found considerable evidence that the gut microbiome continues to mature during and after puberty in a sex-dependent manner. We also review the intriguing, though sparse, literature on potential mechanisms by which host sex may influence the gut microbiome, and vice versa, via sex steroids, bile acids, and the immune system. We conclude that the evidence for the existence of a sex-specific gut microbiome is strong but that there is a dearth of research on how host-microbe interactions lead to this differentiation. Finally, we discuss the types of future studies needed to understand the processes driving the maturation of sex-specific microbial communities and the interplay between gut microbiota, host sex, and human health.
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Affiliation(s)
| | - Scott T. Kelley
- Department of Biology, San Diego State University, San Diego, California 92182
| | - Varykina G. Thackray
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Diego, La Jolla, California 92093
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22
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Wang L, Tang L, Zhai D, Song M, Li W, Xu S, Jiang S, Meng H, Liang J, Wang Y, Zhang B. The role of the sex hormone-gut microbiome axis in tumor immunotherapy. Gut Microbes 2023; 15:2185035. [PMID: 36880651 PMCID: PMC10012946 DOI: 10.1080/19490976.2023.2185035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
Abstract
Accumulating evidence suggested that both gut microbiome and sex play a critical role in the efficacy of immune checkpoint blockade therapy. Considering the reciprocal relationship between sex hormones and gut microbiome, the sex hormone-gut microbiome axis may participate in the regulation of the response to immune checkpoint inhibitors (ICIs). In this review, it was attempted to summarize the current knowledge about the influences of both sex and gut microbiome on the antitumor efficacy of ICIs and describe the interaction between sex hormones and gut microbiome. Accordingly, this review discussed the potential of enhancing the antitumor efficacy of ICIs through regulating the levels of sex hormones through manipulation of gut microbiome. Collectively, this review provided reliable evidence concerning the role of the sex hormone-gut microbiome axis in tumor immunotherapy.
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Affiliation(s)
- Luoyang Wang
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Lei Tang
- Department of Special Medicine, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Dongchang Zhai
- Department of Special Medicine, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Meiying Song
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Wei Li
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Shuo Xu
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Suli Jiang
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Haining Meng
- School of Emergency Medicine, Qingdao University, Qingdao, China
| | - Jie Liang
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Yingying Wang
- Shandong Provincial Key Laboratory of Animal Cell and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, China
| | - Bei Zhang
- Department of Immunology, School of Basic Medicine, Qingdao University, Qingdao, China
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23
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Silamiķele L, Saksis R, Silamiķelis I, Kotoviča PP, Brīvība M, Kalniņa I, Kalniņa Z, Fridmanis D, Kloviņš J. Spatial variation of the gut microbiome in response to long-term metformin treatment in high-fat diet-induced type 2 diabetes mouse model of both sexes. Gut Microbes 2023; 15:2188663. [PMID: 36927522 PMCID: PMC10026874 DOI: 10.1080/19490976.2023.2188663] [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] [Indexed: 03/18/2023] Open
Abstract
Antidiabetic drug metformin alters the gut microbiome composition in the context of type 2 diabetes and other diseases; however, its effects have been mainly studied using fecal samples, which offer limited information about the intestinal site-specific effects of this drug. Our study aimed to characterize the spatial variation of the gut microbiome in response to metformin treatment by using a high-fat diet-induced type 2 diabetes mouse model of both sexes. Four intestinal parts, each at the luminal and mucosal layer level, were analyzed in this study by performing 16S rRNA sequencing covering six variable regions (V1-V6) of the gene and thus allowing to obtain in-depth information about the microbiome composition. We identified significant differences in gut microbiome diversity in each of the intestinal parts regarding the alpha and beta diversities. Metformin treatment altered the abundance of different genera in all studied intestinal sites, with the most pronounced effect in the small intestine, where Lactococcus increased remarkably. The abundance of Lactobacillus was substantially lower in male mice compared to female mice in all locations, in addition to an enrichment of opportunistic pathogens. Diet type and intestinal layer had significant effects on microbiome composition at each of the sites studied. We observed a different effect of metformin treatment on the analyzed subsets, indicating the multiple dimensions of metformin's effect on the gut microbiome.
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Affiliation(s)
- Laila Silamiķele
- Human genetics and disease mechanisms, Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - Rihards Saksis
- Human genetics and disease mechanisms, Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - Ivars Silamiķelis
- Human genetics and disease mechanisms, Latvian Biomedical Research and Study Centre, Riga, Latvia
| | | | - Monta Brīvība
- Human genetics and disease mechanisms, Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - Ineta Kalniņa
- Human genetics and disease mechanisms, Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - Zane Kalniņa
- Human genetics and disease mechanisms, Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - Dāvids Fridmanis
- Human genetics and disease mechanisms, Latvian Biomedical Research and Study Centre, Riga, Latvia
| | - Jānis Kloviņš
- Human genetics and disease mechanisms, Latvian Biomedical Research and Study Centre, Riga, Latvia
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24
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Tousoulis D, Guzik T, Padro T, Duncker DJ, De Luca G, Eringa E, Vavlukis M, Antonopoulos AS, Katsimichas T, Cenko E, Djordjevic-Dikic A, Fleming I, Manfrini O, Trifunovic D, Antoniades C, Crea F. Mechanisms, therapeutic implications, and methodological challenges of gut microbiota and cardiovascular diseases: a position paper by the ESC Working Group on Coronary Pathophysiology and Microcirculation. Cardiovasc Res 2022; 118:3171-3182. [PMID: 35420126 PMCID: PMC11023489 DOI: 10.1093/cvr/cvac057] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 01/27/2022] [Accepted: 02/03/2022] [Indexed: 01/25/2023] Open
Abstract
The human gut microbiota is the microbial ecosystem in the small and large intestines of humans. It has been naturally preserved and evolved to play an important role in the function of the gastrointestinal tract and the physiology of its host, protecting from pathogen colonization, and participating in vitamin synthesis, the functions of the immune system, as well as glucose homeostasis and lipid metabolism, among others. Mounting evidence from animal and human studies indicates that the composition and metabolic profiles of the gut microbiota are linked to the pathogenesis of cardiovascular disease, particularly arterial hypertension, atherosclerosis, and heart failure. In this review article, we provide an overview of the function of the human gut microbiota, summarize, and critically address the evidence linking compositional and functional alterations of the gut microbiota with atherosclerosis and coronary artery disease and discuss the potential of strategies for therapeutically targeting the gut microbiota through various interventions.
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Affiliation(s)
- Dimitris Tousoulis
- 1st Cardiology Department, National and Kapodistrian University of Athens, Vas. Sofias Avenue 114, 11527 Athens, Greece
| | - Tomasz Guzik
- Institute of Cardiovascular Medical Sciences, BHF Glasgow Cardiovascular Research Centre, UK
| | - Teresa Padro
- Sant Pau Institute for Biomedical Research, Barcelona, Spain
| | - Dirk J Duncker
- Department of Cardiology, Thorax Center, Erasmus MC, Rotterdam, the Netherlands
| | - Giuseppe De Luca
- Division of Cardiology, Eastern Piedmont University, Novara, Italy
| | - Etto Eringa
- Institute of Cardiovascular Research, Amsterdam University Medical Center, Amsterdam, the Netherlands
| | | | - Alexios S Antonopoulos
- 1st Cardiology Department, National and Kapodistrian University of Athens, Vas. Sofias Avenue 114, 11527 Athens, Greece
| | - Themistoklis Katsimichas
- 1st Cardiology Department, National and Kapodistrian University of Athens, Vas. Sofias Avenue 114, 11527 Athens, Greece
| | - Edina Cenko
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | | | - Ingrid Fleming
- Centre of Molecular Medicine, Goethe University, Frankfurt, Germany
| | - Olivia Manfrini
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | | | | | - Filippo Crea
- Department of Cardiology and Pulmonary Sciences, Catholic University of the Sacred Heart, Rome, Italy
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25
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Abstract
Gut microbiota and fecal bile acids were analyzed in 278 patients with α-synucleinopathies, which were comprised of 28 patients with dementia with Lewy bodies (DLB), 224 patients with Parkinson's disease (PD), and 26 patients with idiopathic rapid eye movement sleep behavior disorder (iRBD). Similarly to PD, short-chain fatty acids-producing genera were decreased in DLB. Additionally, Ruminococcus torques and Collinsella were increased in DLB, which were not changed in PD. Random forest models to differentiate DLB and PD showed that high Ruminococcus torques and high Collinsella, which presumably increase intestinal permeability, as well as low Bifidobacterium, which are also observed in Alzheimer's disease, were predictive of DLB. As Ruminococcus torques and Collinsella are also major secondary bile acids-producing bacteria, we quantified fecal bile acids and found that the production of ursodeoxycholic acid (UDCA) was high in DLB. Increased UDCA in DLB may mitigate neuroinflammation at the substantia nigra, whereas neuroinflammation may not be critical at the neocortex. Theraeutic intervention to increase Bifidobacteirum and its metabolites may retard the development and progression of DLB.
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26
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Wu Y, Peng X, Li X, Li D, Tan Z, Yu R. Sex hormones influence the intestinal microbiota composition in mice. Front Microbiol 2022; 13:964847. [PMID: 36386696 PMCID: PMC9659915 DOI: 10.3389/fmicb.2022.964847] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/26/2022] [Indexed: 08/26/2023] Open
Abstract
Sex hormone secretion difference is one of the main reasons for sexually dimorphic traits in animals, which affects the dimorphism of the intestinal microbiota; however, their interaction is still unknown. Intestinal mucosa-associated microbiota (MAM) and intestinal luminal content microbiota (LM) belong to two different habitats according to the difference in interactions between bacteria and host intestinal epithelium/nutrients. To clarify the sexually dimorphic characteristics of MAM and LM and their correlation with sex hormones, 12 specific pathogen-free (SPF) Kunming mice from the same nest were fed separately according to sex. After 8 weeks, samples from the male intestinal mucosa group (MM group), the female intestinal mucosa group (FM group), the male intestinal content group (MC group), and the female intestinal content group (FC group) were collected and then, the next-generation sequencing of 16S ribosomal ribonucleic acid (rRNA) gene was performed. Our results showed that the sexual dimorphism of MAM was more obvious than that of LM and the relative abundance of Muribaculaceae, Turicibacter, and Parasutterella was significantly higher in the FM group than in the MM group (p < 0.001, p < 0.05, p < 0.05). Next, we measured the level of serum sex hormones in mice and calculated the correlation coefficient between major bacteria and sex hormones. The results showed that the correlation between MAM and sex hormones was more prominent, and finally, three bacterial genera (Muribaculaceae, Turicibacter, and Parasutterella) were obtained, which could better represent the relationship between sexual dimorphism and sex hormones. The abundance of Parasutterella is positively and negatively correlated with estradiol and testosterone (T), respectively, which may be related to the differences in the metabolism of bile acid and glucose. A decrease in the abundance of Turicibacter is closely related to autism. Our results show that the abundance of Turicibacter is negatively and positively correlated with T and estradiol, respectively, which can provide a hint for the prevalence of male autism. In conclusion, it is proposed in our study that intestinal microbiota is probably the biological basis of physiological and pathological differences due to sex, and intestinal MAM can better represent the sexual dimorphism of mice.
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Affiliation(s)
- Yi Wu
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
- Hunan Key Laboratory of Chinese Medicine Prescription and Syndromes Translational Medicine, Changsha, China
| | - Xinxin Peng
- Department of Pediatrics, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Xiaoya Li
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
- Hunan Key Laboratory of Chinese Medicine Prescription and Syndromes Translational Medicine, Changsha, China
| | - Dandan Li
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
- Hunan Key Laboratory of Chinese Medicine Prescription and Syndromes Translational Medicine, Changsha, China
| | - Zhoujin Tan
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
- Hunan Key Laboratory of Chinese Medicine Prescription and Syndromes Translational Medicine, Changsha, China
| | - Rong Yu
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
- Hunan Key Laboratory of Chinese Medicine Prescription and Syndromes Translational Medicine, Changsha, China
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27
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Goya-Jorge E, Gonza I, Bondue P, Douny C, Taminiau B, Daube G, Scippo ML, Delcenserie V. Human Adult Microbiota in a Static Colon Model: AhR Transcriptional Activity at the Crossroads of Host–Microbe Interaction. Foods 2022; 11:foods11131946. [PMID: 35804761 PMCID: PMC9265634 DOI: 10.3390/foods11131946] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/21/2022] [Accepted: 06/25/2022] [Indexed: 02/01/2023] Open
Abstract
Functional symbiotic intestinal microbiota regulates immune defense and the metabolic processing of xenobiotics in the host. The aryl hydrocarbon receptor (AhR) is one of the transcription factors mediating host–microbe interaction. An in vitro static simulation of the human colon was used in this work to analyze the evolution of bacterial populations, the microbial metabolic output, and the potential induction of AhR transcriptional activity in healthy gut ecosystems. Fifteen target taxa were explored by qPCR, and the metabolic content was chromatographically profiled using SPME-GC-MS and UPLC-FLD to quantify short-chain fatty acids (SCFA) and biogenic amines, respectively. Over 72 h of fermentation, the microbiota and most produced metabolites remained stable. Fermentation supernatant induced AhR transcription in two of the three reporter gene cell lines (T47D, HepG2, HT29) evaluated. Mammary and intestinal cells were more sensitive to microbiota metabolic production, which showed greater AhR agonism than the 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) used as a positive control. Some of the SCFA and biogenic amines identified could crucially contribute to the potent AhR induction of the fermentation products. As a fundamental pathway mediating human intestinal homeostasis and as a sensor for several microbial metabolites, AhR activation might be a useful endpoint to include in studies of the gut microbiota.
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Affiliation(s)
- Elizabeth Goya-Jorge
- Laboratory of Food Quality Management, Department of Food Sciences, Faculty of Veterinary Medicine, University of Liege, Av. de Cureghem 10 (B43b), 4000 Liege, Belgium; (E.G.-J.); (I.G.)
| | - Irma Gonza
- Laboratory of Food Quality Management, Department of Food Sciences, Faculty of Veterinary Medicine, University of Liege, Av. de Cureghem 10 (B43b), 4000 Liege, Belgium; (E.G.-J.); (I.G.)
| | - Pauline Bondue
- Research & Development, ORTIS S.A., Hinter der Heck 46, 4750 Elsenborn, Belgium;
| | - Caroline Douny
- Laboratory of Food Analysis, Department of Food Sciences, Faculty of Veterinary Medicine, University of Liege, Av. de Cureghem 10 (B43b), 4000 Liege, Belgium; (C.D.); (M.-L.S.)
| | - Bernard Taminiau
- Laboratory of Microbiology, Department of Food Sciences, Faculty of Veterinary Medicine, University of Liege, Av. de Cureghem 180 (B42), 4000 Liege, Belgium; (B.T.); (G.D.)
| | - Georges Daube
- Laboratory of Microbiology, Department of Food Sciences, Faculty of Veterinary Medicine, University of Liege, Av. de Cureghem 180 (B42), 4000 Liege, Belgium; (B.T.); (G.D.)
| | - Marie-Louise Scippo
- Laboratory of Food Analysis, Department of Food Sciences, Faculty of Veterinary Medicine, University of Liege, Av. de Cureghem 10 (B43b), 4000 Liege, Belgium; (C.D.); (M.-L.S.)
| | - Véronique Delcenserie
- Laboratory of Food Quality Management, Department of Food Sciences, Faculty of Veterinary Medicine, University of Liege, Av. de Cureghem 10 (B43b), 4000 Liege, Belgium; (E.G.-J.); (I.G.)
- Correspondence: ; Tel.: +32-4-366-51-24
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28
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Archaeome in Colorectal Cancer: High Abundance of Methanogenic Archaea in Colorectal Cancer Patients. INTERNATIONAL JOURNAL OF CANCER MANAGEMENT 2022. [DOI: 10.5812/ijcm-117843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: The importance of microbiome in the progression and development of colorectal cancer (CRC) has been discussed in the last decade. Like colon bacteria, other intestinal microorganisms, including archaea, could also be involved in the CRC progression, so it's important to work out the archaeal microbiome (archaeome) composition among CRC patients. Objectives: The aim of this study was to determine the archaeome composition of CRC and healthy controls based on age and gender. Methods: Total bacterial DNA was extracted from 30 biopsy samples (17 CRC and 13 healthy controls). Archaeome communities were profiled by 16S rRNA high throughput sequencing, then compared to clinicopathological features, including CRC patients’ gender and age. Results: In the CRC patients, archaeal methanogens including Methanobrevibacter (86%) and Methanomassiliicoccus (8%) were overrepresented at the genus level. In contrast in the healthy controls, only two genera of haloarchaea including Natronococcus (58%) and Haloterrigena (42%) were presented. The results showed that the number of archaeal genera in men is higher than women in both the CRC and healthy controls. moreover, our results showed that the most genera of archaea are present in the CRC-32-50 group, six archaeal genera. The differential abundance taxa analysis results showed significant differences between healthy controls and CRC patients (P ≤ 0.05). Conclusions: The high abundance of methanogens in the colon archaeome of CRC patients compared to healthy controls suggests that methanogens may be involved in CRC development.
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29
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Speckmann B, Kleinbölting J, Börner F, Jordan PM, Werz O, Pelzer S, tom Dieck H, Wagner T, Schön C. Synbiotic Compositions of Bacillus megaterium and Polyunsaturated Fatty Acid Salt Enable Self-Sufficient Production of Specialized Pro-Resolving Mediators. Nutrients 2022; 14:nu14112265. [PMID: 35684065 PMCID: PMC9182845 DOI: 10.3390/nu14112265] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 02/04/2023] Open
Abstract
Specialized pro-resolving mediators (SPM) have emerged as crucial lipid mediators that confer the inflammation-resolving effects of omega-3 polyunsaturated fatty acids (n-3 PUFA). Importantly, SPM biosynthesis is dysfunctional in various conditions, which may explain the inconclusive efficacy data from n-3 PUFA interventions. To overcome the limitations of conventional n-3 PUFA supplementation strategies, we devised a composition enabling the self-sufficient production of SPM in vivo. Bacillus megaterium strains were fed highly bioavailable n-3 PUFA, followed by metabololipidomics analysis and bioinformatic assessment of the microbial genomes. All 48 tested Bacillus megaterium strains fed with the n-3 PUFA formulation produced a broad range of SPM and precursors thereof in a strain-specific manner, which may be explained by the CYP102A1 gene polymorphisms that we detected. A pilot study was performed to test if a synbiotic Bacillus megaterium/n-3 PUFA formulation increases SPM levels in vivo. Supplementation with a synbiotic capsule product led to significantly increased plasma levels of hydroxy-eicosapentaenoic acids (5-HEPE, 15-HEPE, 18-HEPE) and hydroxy-docosahexaenoic acids (4-HDHA, 7-HDHA) as well as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in healthy humans. To the best of our knowledge, we report here for the first time the development and in vivo application of a self-sufficient SPM-producing formulation. Further investigations are warranted to confirm and expand these findings, which may create a new class of n-3 PUFA interventions targeting inflammation resolution.
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Affiliation(s)
- Bodo Speckmann
- Evonik Operations GmbH, Rodenbacher Chaussee 4, 63457 Hanau, Germany; (B.S.); (J.K.); (S.P.); (H.t.D.)
| | - Jessica Kleinbölting
- Evonik Operations GmbH, Rodenbacher Chaussee 4, 63457 Hanau, Germany; (B.S.); (J.K.); (S.P.); (H.t.D.)
| | - Friedemann Börner
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Philosophenweg 14, 07743 Jena, Germany; (F.B.); (P.M.J.); (O.W.)
| | - Paul M. Jordan
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Philosophenweg 14, 07743 Jena, Germany; (F.B.); (P.M.J.); (O.W.)
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Philosophenweg 14, 07743 Jena, Germany; (F.B.); (P.M.J.); (O.W.)
| | - Stefan Pelzer
- Evonik Operations GmbH, Rodenbacher Chaussee 4, 63457 Hanau, Germany; (B.S.); (J.K.); (S.P.); (H.t.D.)
| | - Heike tom Dieck
- Evonik Operations GmbH, Rodenbacher Chaussee 4, 63457 Hanau, Germany; (B.S.); (J.K.); (S.P.); (H.t.D.)
| | - Tanja Wagner
- BioTeSys GmbH, Schelztorstraße 54-56, 73728 Esslingen, Germany;
| | - Christiane Schön
- BioTeSys GmbH, Schelztorstraße 54-56, 73728 Esslingen, Germany;
- Correspondence:
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30
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Microbiome Analysis in Patients with Colorectal Cancer by 16S Ribosomal RNA Sequencing in the Southeast of Iran. Jundishapur J Microbiol 2022. [DOI: 10.5812/jjm-121119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background: Colorectal cancer (CRC) is the third most common malignant tumor worldwide. Emerging evidence suggests that dysbiosis of the colon microbiome may be involved in CRC development. Objectives: The present study aimed to compare the composition and diversity of the colon microbiome by high-throughput 16S ribosomal RNA (rRNA) sequencing between CRC patients and healthy controls. Microbiome composition and diversity were also examined based on gender. Methods: The colon microbiome richness and diversity of samples from 17 CRC patients and 13 healthy controls were analyzed by 16S rRNA sequencing. Alpha and beta diversity were calculated to determine the differences in colon microbiome diversity. Results: Alpha and beta diversity showed significant differences between the CRC and healthy control groups regarding the microbiome. Our results showed that CRC samples had the highest richness and diversity. The total number (P ≤ 0.01), phylogenetic diversity (P ≤ 0.01), Chao1 (P ≤ 0.01), Shannon (P ≤ 0.05), and Simpson (P ≤ 0.01) indices were significantly higher in the CRC group than in the healthy control group. In addition, the comparison between females and males showed that the microbiome diversity was higher in the CRC female (CRC-F) group than in other groups. Prevotella, Fusobacterium, Akkermansia, Leptotrichia, Streptococcus, and ParaBacteroides were more commonly observed in the CRC group, while Bacteroides, Enterobacteriaceae (unknown genus), Ruminococcus, and Campylobacter were more commonly observed in the healthy control group. Conclusions: This study showed differences between the CRC and healthy control groups regarding the diversity and composition of the colon microbiome, suggesting a contribution of the microbiome in the development and progression of CRC.
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Eltokhi A, Sommer IE. A Reciprocal Link Between Gut Microbiota, Inflammation and Depression: A Place for Probiotics? Front Neurosci 2022; 16:852506. [PMID: 35546876 PMCID: PMC9081810 DOI: 10.3389/fnins.2022.852506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/18/2022] [Indexed: 12/12/2022] Open
Abstract
Depression is a severe mental disorder that places a significant economic burden on public health. The reciprocal link between the trillions of bacteria in the gut, the microbiota, and depression is a controversial topic in neuroscience research and has drawn the attention of public interest and press coverage in recent years. Mounting pieces of evidence shed light on the role of the gut microbiota in depression, which is suggested to involve immune, endocrine, and neural pathways that are the main components of the microbiota-gut-brain axis. The gut microbiota play major roles in brain development and physiology and ultimately behavior. The bidirectional communication between the gut microbiota and brain function has been extensively explored in animal models of depression and clinical research in humans. Certain gut microbiota strains have been associated with the pathophysiology of depression. Therefore, oral intake of probiotics, the beneficial living bacteria and yeast, may represent a therapeutic approach for depression treatment. In this review, we summarize the findings describing the possible links between the gut microbiota and depression, focusing mainly on the inflammatory markers and sex hormones. By discussing preclinical and clinical studies on probiotics as a supplementary therapy for depression, we suggest that probiotics may be beneficial in alleviating depressive symptoms, possibly through immune modulation. Still, further comprehensive studies are required to draw a more solid conclusion regarding the efficacy of probiotics and their mechanisms of action.
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Affiliation(s)
- Ahmed Eltokhi
- Department of Pharmacology, University of Washington, Seattle, WA, United States
| | - Iris E Sommer
- Department of Biomedical Sciences of Cells & Systems, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
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Nadimpalli ML, Lanza VF, Montealegre MC, Sultana S, Fuhrmeister ER, Worby CJ, Teichmann L, Caduff L, Swarthout JM, Crider YS, Earl AM, Brown J, Luby SP, Islam MA, Julian TR, Pickering AJ. Drinking water chlorination has minor effects on the intestinal flora and resistomes of Bangladeshi children. Nat Microbiol 2022; 7:620-629. [PMID: 35422497 PMCID: PMC9249080 DOI: 10.1038/s41564-022-01101-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 02/24/2022] [Indexed: 02/07/2023]
Abstract
Healthy development of the gut microbiome provides long-term health benefits. Children raised in countries with high infectious disease burdens are frequently exposed to diarrhoeal pathogens and antibiotics, which perturb gut microbiome assembly. A recent cluster-randomized trial leveraging >4,000 child observations in Dhaka, Bangladesh, found that automated water chlorination of shared taps effectively reduced child diarrhoea and antibiotic use. In this substudy, we leveraged stool samples collected from 130 children 1 year after chlorine doser installation to examine differences between treatment and control children's gut microbiota. Water chlorination was associated with increased abundance of several bacterial genera previously linked to improved gut health; however, we observed no effects on the overall richness or diversity of taxa. Several clinically relevant antibiotic resistance genes were relatively more abundant in the gut microbiome of treatment children, possibly due to increases in Enterobacteriaceae. While further studies on the long-term health impacts of drinking chlorinated water would be valuable, we conclude that access to chlorinated water did not substantially impact child gut microbiome development in this setting, supporting the use of chlorination to increase global access to safe drinking water.
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Affiliation(s)
- Maya L. Nadimpalli
- Department of Civil and Environmental Engineering, Tufts University, Medford, MA, USA,Stuart B. Levy Center for Integrated Management of Antimicrobial Resistance (Levy CIMAR), Tufts University, Boston, MA, USA
| | - Val F. Lanza
- Bioinformatics Unit, Ramón y Cajal Health Research Institute (IRYCIS), Madrid, Spain,Network Research Center for Infectious Diseases (CIBERINFEC), Spain
| | | | - Sonia Sultana
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
| | - Erica R. Fuhrmeister
- Department of Civil and Environmental Engineering, Tufts University, Medford, MA, USA
| | - Colin J. Worby
- Infectious Disease & Microbiome Program, Broad Institute, Cambridge, MA
| | - Lisa Teichmann
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Lea Caduff
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
| | - Jenna M. Swarthout
- Department of Civil and Environmental Engineering, Tufts University, Medford, MA, USA
| | - Yoshika S. Crider
- Energy and Resources Group, University of California Berkeley, Berkeley, CA, USA,King Center on Global Development, Stanford University, Stanford, CA, USA
| | - Ashlee M. Earl
- Infectious Disease & Microbiome Program, Broad Institute, Cambridge, MA
| | - Joe Brown
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - Stephen P. Luby
- Infectious Diseases and Geographic Medicine, Stanford University, Stanford, CA, USA
| | - Mohammad Aminul Islam
- Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland,Paul G. Allen School for Global Health, Washington State University, Pullman, WA, USA
| | - Timothy R. Julian
- Network Research Center for Infectious Diseases (CIBERINFEC), Spain,Swiss Tropical and Public Health Institute, Basel, Switzerland,University of Basel, Basel, Switzerland
| | - Amy J. Pickering
- Stuart B. Levy Center for Integrated Management of Antimicrobial Resistance (Levy CIMAR), Tufts University, Boston, MA, USA,Department of Civil and Environmental Engineering, University of California, Berkeley, CA, USA,Blum Center for Developing Economies, University of California, Berkeley, CA, USA,Correspondence and requests for materials should be addressed to Dr. Amy Pickering () and Dr. Tim Julian ()
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Low L, Suleiman K, Shamdas M, Bassilious K, Poonit N, Rossiter AE, Acharjee A, Loman N, Murray PI, Wallace GR, Rauz S. Gut Dysbiosis in Ocular Mucous Membrane Pemphigoid. Front Cell Infect Microbiol 2022; 12:780354. [PMID: 35493740 PMCID: PMC9046938 DOI: 10.3389/fcimb.2022.780354] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 03/16/2022] [Indexed: 12/27/2022] Open
Abstract
Mucous Membrane Pemphigoid is an orphan multi-system autoimmune scarring disease involving mucosal sites, including the ocular surface (OcMMP) and gut. Loss of tolerance to epithelial basement membrane proteins and generation of autoreactive T cell and/or autoantibodies are central to the disease process. The gut microbiome plays a critical role in the development of the immune system. Alteration in the gut microbiome (gut dysbiosis) affects the generation of autoreactive T cells and B cell autoantibody repertoire in several autoimmune conditions. This study examines the relationship between gut microbiome diversity and ocular inflammation in patients with OcMMP by comparing OcMMP gut microbiome profiles with healthy controls. DNA was extracted from faecal samples (49 OcMMP patients, 40 healthy controls), amplified for the V4 region of the 16S rRNA gene and sequenced using Illumina Miseq platform. Sequencing reads were processed using the bioinformatics pipeline available in the mothur v.1.44.1 software. After adjusting for participant factors in the multivariable model (age, gender, BMI, diet, proton pump inhibitor use), OcMMP cohort was found to be associated with lower number of operational taxonomic units (OTUs) and Shannon Diversity Index when compared to healthy controls. Within the OcMMP cohort, the number of OTUs were found to be significantly correlated with both the bulbar conjunctival inflammation score (p=0.03) and the current use of systemic immunotherapy (p=0.02). The linear discriminant analysis effect size scores indicated that Streptococcus and Lachnoclostridium were enriched in OcMMP patients whilst Oxalobacter, Clostridia uncultured genus-level group (UCG) 014, Christensenellaceae R-7 group and butyrate-producing bacteria such as Ruminococcus, Lachnospiraceae, Coprococcus, Roseburia, Oscillospiraceae UCG 003, 005, NK4A214 group were enriched in healthy controls (Log10 LDA score < 2, FDR-adjusted p <0.05). In conclusion, OcMMP patients have gut dysbiosis correlating with bulbar conjunctival inflammation and the use of systemic immunotherapies. This provides a framework for future longitudinal deep phenotyping studies on the role of the gut microbiome in the pathogenesis of OcMMP.
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Affiliation(s)
- Liying Low
- Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Kusy Suleiman
- Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Mohith Shamdas
- Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Kerolos Bassilious
- Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
- Birmingham and Midland Eye Centre, Sandwell and West Birmingham National Health Service (NHS) Trust, Birmingham, United Kingdom
| | - Natraj Poonit
- Birmingham and Midland Eye Centre, Sandwell and West Birmingham National Health Service (NHS) Trust, Birmingham, United Kingdom
| | - Amanda E. Rossiter
- Institute for Microbiology and Infection, University of Birmingham, Birmingham, United Kingdom
| | - Animesh Acharjee
- College of Medical and Dental Sciences, Institute of Cancer and Genomic Sciences, Centre for Computational Biology, University of Birmingham, Birmingham, United Kingdom
- Institute of Translational Medicine, University Hospitals Birmingham National Health Service (NHS), Foundation Trust, Birmingham, United Kingdom
- National Institute for Health Research (NIHR) Surgical Reconstruction and Microbiology Research Centre, University Hospital Birmingham, Birmingham, United Kingdom
| | - Nicholas Loman
- Institute for Microbiology and Infection, University of Birmingham, Birmingham, United Kingdom
| | - Philip I. Murray
- Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
- Birmingham and Midland Eye Centre, Sandwell and West Birmingham National Health Service (NHS) Trust, Birmingham, United Kingdom
| | - Graham R. Wallace
- Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Saaeha Rauz
- Academic Unit of Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
- Birmingham and Midland Eye Centre, Sandwell and West Birmingham National Health Service (NHS) Trust, Birmingham, United Kingdom
- *Correspondence: Saaeha Rauz,
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Pinart M, Dötsch A, Schlicht K, Laudes M, Bouwman J, Forslund SK, Pischon T, Nimptsch K. Gut Microbiome Composition in Obese and Non-Obese Persons: A Systematic Review and Meta-Analysis. Nutrients 2021; 14:nu14010012. [PMID: 35010887 PMCID: PMC8746372 DOI: 10.3390/nu14010012] [Citation(s) in RCA: 135] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 12/11/2022] Open
Abstract
Whether the gut microbiome in obesity is characterized by lower diversity and altered composition at the phylum or genus level may be more accurately investigated using high-throughput sequencing technologies. We conducted a systematic review in PubMed and Embase including 32 cross-sectional studies assessing the gut microbiome composition by high-throughput sequencing in obese and non-obese adults. A significantly lower alpha diversity (Shannon index) in obese versus non-obese adults was observed in nine out of 22 studies, and meta-analysis of seven studies revealed a non-significant mean difference (−0.06, 95% CI −0.24, 0.12, I2 = 81%). At the phylum level, significantly more Firmicutes and fewer Bacteroidetes in obese versus non-obese adults were observed in six out of seventeen, and in four out of eighteen studies, respectively. Meta-analyses of six studies revealed significantly higher Firmicutes (5.50, 95% 0.27, 10.73, I2 = 81%) and non-significantly lower Bacteroidetes (−4.79, 95% CI −10.77, 1.20, I2 = 86%). At the genus level, lower relative proportions of Bifidobacterium and Eggerthella and higher Acidaminococcus, Anaerococcus, Catenibacterium, Dialister, Dorea, Escherichia-Shigella, Eubacterium, Fusobacterium, Megasphera, Prevotella, Roseburia, Streptococcus, and Sutterella were found in obese versus non-obese adults. Although a proportion of studies found lower diversity and differences in gut microbiome composition in obese versus non-obese adults, the observed heterogeneity across studies precludes clear answers.
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Affiliation(s)
- Mariona Pinart
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany; (M.P.); (T.P.)
| | - Andreas Dötsch
- Department of Physiology and Biochemistry of Nutrition, Max Rubner-Institut (MRI)—Federal Research Institute of Nutrition and Food, 76131 Karlsruhe, Germany;
| | - Kristina Schlicht
- Institute of Diabetes and Clinical Metabolic Research, University of Kiel, 24105 Kiel, Germany; (K.S.); (M.L.)
| | - Matthias Laudes
- Institute of Diabetes and Clinical Metabolic Research, University of Kiel, 24105 Kiel, Germany; (K.S.); (M.L.)
- Division of Endocrinology, Diabetes and Clinical Nutrition, Department of Internal Medicine 1, Kiel University, 24118 Kiel, Germany
| | - Jildau Bouwman
- Microbiology and Systems Biology Group, Toegepast Natuurwetenschappelijk Onderzoek (TNO), Utrechtseweg 48, 3704 HE Zeist, The Netherlands;
| | - Sofia K. Forslund
- Experimental and Clinical Research Center, A Cooperation of Charité-Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Lindenberger Weg 80, 13125 Berlin, Germany;
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, 10117 Berlin, Germany
- Host-Microbiome Factors in Cardiovascular Disease Lab, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
- Biobank Core Facility, Berlin Institute of Health at Charité-Universitätsmedizin Berlin, 10178 Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, 10785 Berlin, Germany
| | - Tobias Pischon
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany; (M.P.); (T.P.)
- Biobank Core Facility, Berlin Institute of Health at Charité-Universitätsmedizin Berlin, 10178 Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, 10785 Berlin, Germany
- Biobank Technology Platform, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany
| | - Katharina Nimptsch
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125 Berlin, Germany; (M.P.); (T.P.)
- Correspondence: ; Tel.: +49-30-9046-4573
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Tian J, Bai B, Gao Z, Yang Y, Wu H, Wang X, Wang J, Li M, Tong X. Alleviation Effects of GQD, a Traditional Chinese Medicine Formula, on Diabetes Rats Linked to Modulation of the Gut Microbiome. Front Cell Infect Microbiol 2021; 11:740236. [PMID: 34692563 PMCID: PMC8531589 DOI: 10.3389/fcimb.2021.740236] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 09/22/2021] [Indexed: 01/14/2023] Open
Abstract
Gegen Qinlian Decoction (GQD) is a Chinese herbal medicine that has been reported to significantly decrease blood glucose levels, which is suggested to be related to interactions with the gut microbiota. However, the protective effect of GQD on intestinal barrier function with regard to its influence on the gut microbiota has not been explored to date. In this study, we investigated the role of the gut microbiota in mediating the hypoglycemic mechanism of GQD in type 2 diabetes mellitus (T2DM) rats induced by a single intraperitoneal injection of streptozotocin after 4 weeks of high-fat diet feeding. The T2DM rats were randomly allocated to receive GQD, metformin (Met), or saline for 12 consecutive weeks, and changes in metabolic parameters, intestinal barrier function, and inflammation were investigated. Gut microbiota was analyzed using 16S rRNA gene sequencing from fecal samples, and statistical analyses were performed to correlate microbiota composition with phenotypes of the T2DM rats. GQD administration decreased the levels of blood glucose and inflammatory cytokines, and increased the levels of tight junction proteins. Besides, GQD had a protective effect on islet function, restoring intestinal permeability, and inhibiting inflammation, as evidenced by increases in the levels of serum C-peptide, occludin, and claudin-1 in the colon, and also improved the expression of serum inflammatory factors. In addition, GQD regulated the structure of the gut microbiota by increasing the proportions of short-chain fatty acids-producing and anti-inflammatory bacteria, and decreasing the proportions of conditioned pathogenic bacteria associated with the diabetic phenotype. Overall, these findings suggest that GQD could ameliorate hyperglycemia and protect islet function by regulating the structure of the gut microbiota, thereby restoring intestinal permeability and inhibiting inflammation in T2DM rats. Our study thus suggests that the hypoglycemic mechanism of GQD is mediated by its modulation of the gut microbiota.
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Affiliation(s)
- Jiaxing Tian
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Bingbing Bai
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science, Beijing, China
| | - Zezheng Gao
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yingying Yang
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Haoran Wu
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xinmiao Wang
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jun Wang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science, Beijing, China
| | - Min Li
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaolin Tong
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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Iino C, Shimoyama T. Impact of Helicobacter pylori infection on gut microbiota. World J Gastroenterol 2021; 27:6224-6230. [PMID: 34712028 PMCID: PMC8515792 DOI: 10.3748/wjg.v27.i37.6224] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/13/2021] [Accepted: 09/02/2021] [Indexed: 02/06/2023] Open
Abstract
A number of studies have revealed the association between Helicobacter pylori (H. pylori) infection and the gut microbiota. More than half of the investigations on the impact of H. pylori on the gut microbiota have been the sub-analyses of the influence of eradication therapy. It was observed that H. pylori eradication altered gut microbiota within a short period after eradication, and majority of the alterations took a long period of time to reverse back to the original. Changes in the gut microbiota within a short period after eradication may be attributed to antibiotics and proton pump inhibitors. Modification of gastric acidity in the stomach caused by a long-term H. pylori infection alters the gut microbiota. Analysis of the gut microbiota should be conducted in a large population, adjusting for considerable biases associated with the composition of the gut microbiota, such as age, sex, body mass index, diet and the virulence of H. pylori.
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Affiliation(s)
- Chikara Iino
- Department of Gastroenterology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
| | - Tadashi Shimoyama
- Department of Gastroenterology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8562, Japan
- Department of Internal Medicine, Aomori General Health Examination Center, Aomori 030-0962, Japan
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Morrow JD, Castaldi PJ, Chase RP, Yun JH, Lee S, Liu YY, Hersh CP. Peripheral blood microbial signatures in current and former smokers. Sci Rep 2021; 11:19875. [PMID: 34615932 PMCID: PMC8494912 DOI: 10.1038/s41598-021-99238-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 09/15/2021] [Indexed: 12/13/2022] Open
Abstract
The human microbiome has a role in the development of multiple diseases. Individual microbiome profiles are highly personalized, though many species are shared. Understanding the relationship between the human microbiome and disease may inform future individualized treatments. We hypothesize the blood microbiome signature may be a surrogate for some lung microbial characteristics. We sought associations between the blood microbiome signature and lung-relevant host factors. Based on reads not mapped to the human genome, we detected microbial nucleic acids through secondary use of peripheral blood RNA-sequencing from 2,590 current and former smokers with and without chronic obstructive pulmonary disease (COPD) from the COPDGene study. We used the Genome Analysis Toolkit (GATK) microbial pipeline PathSeq to infer microbial profiles. We tested associations between the inferred profiles and lung disease relevant phenotypes and examined links to host gene expression pathways. We replicated our analyses using a second independent set of blood RNA-seq data from 1,065 COPDGene study subjects and performed a meta-analysis across the two studies. The four phyla with highest abundance across all subjects were Proteobacteria, Actinobacteria, Firmicutes and Bacteroidetes. In our meta-analysis, we observed associations (q-value < 0.05) between Acinetobacter, Serratia, Streptococcus and Bacillus inferred abundances and Modified Medical Research Council (mMRC) dyspnea score. Current smoking status was associated (q < 0.05) with Acinetobacter, Serratia and Cutibacterium abundance. All 12 taxa investigated were associated with at least one white blood cell distribution variable. Abundance for nine of the 12 taxa was associated with sex, and seven of the 12 taxa were associated with race. Host-microbiome interaction analysis revealed clustering of genera associated with mMRC dyspnea score and smoking status, through shared links to several host pathways. This study is the first to identify a bacterial microbiome signature in the peripheral blood of current and former smokers. Understanding the relationships between systemic microbial signatures and lung-related phenotypes may inform novel interventions and aid understanding of the systemic effects of smoking.
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Affiliation(s)
- Jarrett D Morrow
- Channing Division of Network Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA.
| | - Peter J Castaldi
- Channing Division of Network Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA
| | - Robert P Chase
- Channing Division of Network Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA
| | - Jeong H Yun
- Channing Division of Network Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA
| | - Sool Lee
- Channing Division of Network Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA
| | - Yang-Yu Liu
- Channing Division of Network Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA
| | - Craig P Hersh
- Channing Division of Network Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA, USA
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Snigdha S, Ha K, Tsai P, Dinan TG, Bartos JD, Shahid M. Probiotics: Potential novel therapeutics for microbiota-gut-brain axis dysfunction across gender and lifespan. Pharmacol Ther 2021; 231:107978. [PMID: 34492236 DOI: 10.1016/j.pharmthera.2021.107978] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/21/2021] [Accepted: 08/17/2021] [Indexed: 12/12/2022]
Abstract
Probiotics are live microorganisms, which when administered in adequate amounts, present a health benefit for the host. While the beneficial effects of probiotics on gastrointestinal function are generally well recognized, new animal research and clinical studies have found that alterations in gut microbial communities can have a broad range of effects throughout the body. Non-intestinal sites impacted include the immune, endocrine, cardiovascular and the central nervous system (CNS). In particular, there has been a growing interest and appreciation about the role that gut microbiota may play in affecting CNS-related function through the 'microbiota-gut-brain axis'. Emerging evidence suggests potential therapeutic benefits of probiotics in several CNS conditions, such as anxiety, depression, autism spectrum disorders and Parkinson's disease. There may also be some gender-specific variances in terms of probiotic mediated effects, with the gut microbiota shaping and being concurrently molded by the hormonal environment governing differences between the sexes. Probiotics may influence the ability of the gut microbiome to affect a variety of biological processes in the host, including neurotransmitter activity, vagal neurotransmission, generation of neuroactive metabolites and inflammatory response mediators. Some of these may engage in cross talk with host sex hormones, such as estrogens, which could be of relevance in relation to their effects on stress response and cognitive health. This raises the possibility of gender-specific variation with regards to the biological action of probiotics, including that on the endocrine and central nervous systems. In this review we aim to describe the current understanding in relation to the role and use of probiotics in microbiota-gut-brain axis-related dysfunction. Furthermore, we will address the conceptualization and classification of probiotics in the context of gender and lifespan as well as how restoring gut microbiota composition by clinical or dietary intervention can help in supporting health outcomes other than those related to the gastrointestinal tract. We also evaluate how these new learnings may impact industrial effort in probiotic research and the discovery and development of novel and more personalized, condition-specific, beneficial probiotic therapeutic agents.
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Affiliation(s)
| | - Kevin Ha
- MeriCal, 233 E Bristol St., Orange, CA, USA
| | - Paul Tsai
- MeriCal, 233 E Bristol St., Orange, CA, USA
| | - Timothy G Dinan
- APC Microbiome Ireland, University College Cork, Cork, Ireland; Department of Psychiatry and Neurobehavioural Science, University College Cork, Cork, Ireland
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Gao J, Guo X, Wei W, Li R, Hu K, Liu X, Jiang W, Liu S, Wang W, Sun H, Wu H, Zhang Y, Gu W, Li Y, Sun C, Han T. The Association of Fried Meat Consumption With the Gut Microbiota and Fecal Metabolites and Its Impact on Glucose Homoeostasis, Intestinal Endotoxin Levels, and Systemic Inflammation: A Randomized Controlled-Feeding Trial. Diabetes Care 2021; 44:1970-1979. [PMID: 34253560 DOI: 10.2337/dc21-0099] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 06/03/2021] [Indexed: 02/03/2023]
Abstract
OBJECTIVE This randomized controlled-feeding trial aimed to determine the impact of fried meat intake on the gut microbiota and fecal cometabolites and whether such impacts influenced host glucose homoeostasis, intestinal endotoxin levels, and systemic inflammation. RESEARCH DESIGN AND METHODS A total of 117 overweight adults were randomized into two groups. Fifty-nine participants were provided fried meat four times per week, and 58 participants were restricted from fried meat intake, while holding food group and nutrient compositions constant, for 4 weeks. The gut microbiota was analyzed by 16S rRNA sequencing. Glucose and insulin concentrations at 0, 30, 60, and 120 min of an oral glucose tolerance test, fecal microbiota-host cometabolite levels, and intestinal endotoxin and inflammation serum biomarker levels were measured. The area under the curve (AUC) for insulin, insulinogenic index (IGI), and muscle insulin resistance index (MIRI) were calculated. RESULTS The participants who consumed fried meat had lower IGI values than the control subjects, but they had higher MIRI and AUC values of insulin and lipopolysaccharide (LPS), TNF-α, IL-10, and IL-1β levels (P < 0.05). Fried meat intake lowered microbial community richness and decreased Lachnospiraceae and Flavonifractor abundances while increasing Dialister, Dorea, and Veillonella abundances (P FDR <0.05), provoking a significant shift in the fecal cometabolite profile, with lower 3-indolepropionic acid, valeric acid, and butyric acid concentrations and higher carnitine and methylglutaric acid concentrations (P FDR <0.05). Changes in these cometabolite levels were significantly associated with changes in IGI and MIRI values and LPS, FGF21, TNF-α, IL-1β, and IL-10 levels (P < 0.05). CONCLUSIONS Fried meat intake impaired glucose homoeostasis and increased intestinal endotoxin and systemic inflammation levels by influencing the gut microbiota and microbial-host cometabolites.
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Affiliation(s)
- Jian Gao
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Xiaoyu Guo
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Wei Wei
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Ran Li
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China.,Harbin Center for Disease Control and Prevention, Harbin, China
| | - Ke Hu
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Xin Liu
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Wenbo Jiang
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Siyao Liu
- Division of Epidemiology, Biostatistics and Environmental Health, School of Public Health, University of Memphis, Memphis, TN.,Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, TN
| | - Weiqi Wang
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Hu Sun
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Huanyu Wu
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Yuntao Zhang
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Wenbo Gu
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Ying Li
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China.,Key Laboratory of Hepatosplenic Surgery, Harbin Medical University, Ministry of Education, Harbin, China.,NHC Key Laboratory of Cell Translation, Harbin Medical University, Harbin, China
| | - Changhao Sun
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China
| | - Tianshu Han
- Department of Nutrition and Food Hygiene, National Key Discipline, School of Public Health, Harbin Medical University, Harbin, China .,Department of Endocrinology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
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Borgo F, Macandog AD, Diviccaro S, Falvo E, Giatti S, Cavaletti G, Melcangi RC. Alterations of gut microbiota composition in post-finasteride patients: a pilot study. J Endocrinol Invest 2021; 44:1263-1273. [PMID: 32951160 PMCID: PMC8124058 DOI: 10.1007/s40618-020-01424-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 09/08/2020] [Indexed: 12/11/2022]
Abstract
PURPOSE Post-finasteride syndrome (PFS) has been reported in a subset of patients treated with finasteride (an inhibitor of the enzyme 5alpha-reductase) for androgenetic alopecia. These patients showed, despite the suspension of the treatment, a variety of persistent symptoms, like sexual dysfunction and cognitive and psychological disorders, including depression. A growing body of literature highlights the relevance of the gut microbiota-brain axis in human health and disease. For instance, alterations in gut microbiota composition have been reported in patients with major depressive disorder. Therefore, we have here analyzed the gut microbiota composition in PFS patients in comparison with a healthy cohort. METHODS Fecal microbiota of 23 PFS patients was analyzed by 16S rRNA gene sequencing and compared with that reported in ten healthy male subjects. RESULTS Sexual dysfunction, psychological and cognitive complaints, muscular problems, and physical alterations symptoms were reported in more than half of the PFS patients at the moment of sample collection. The quality sequence check revealed a low library depth for two fecal samples. Therefore, the gut microbiota analyses were conducted on 21 patients. The α-diversity was significantly lower in PFS group, showing a reduction of richness and diversity of gut microbiota structure. Moreover, when visualizing β-diversity, a clustering effect was found in the gut microbiota of a subset of PFS subjects, which was also characterized by a reduction in Faecalibacterium spp. and Ruminococcaceae UCG-005, while Alloprevotella and Odoribacter spp were increased compared to healthy control. CONCLUSION Gut microbiota population is altered in PFS patients, suggesting that it might represent a diagnostic marker and a possible therapeutic target for this syndrome.
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Affiliation(s)
- F Borgo
- Department of Experimental Oncology, IEO European Institute of Oncology IRCCS, Milan, Italy
| | - A D Macandog
- Department of Experimental Oncology, IEO European Institute of Oncology IRCCS, Milan, Italy
- Department of Oncology and Hemato-Oncology, Università Degli Studi di Milano, Milan, Italy
| | - S Diviccaro
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università Degli Studi di Milano, Via Balzaretti 9, 20133, Milan, Italy
| | - E Falvo
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università Degli Studi di Milano, Via Balzaretti 9, 20133, Milan, Italy
| | - S Giatti
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università Degli Studi di Milano, Via Balzaretti 9, 20133, Milan, Italy
| | - G Cavaletti
- Experimental Neurology Unit, Università di Milano-Bicocca, Monza, Italy
- Milan Center for Neuroscience, Università di Milano-Bicocca, Monza, Italy
| | - R C Melcangi
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università Degli Studi di Milano, Via Balzaretti 9, 20133, Milan, Italy.
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Liu X, Cheng YW, Shao L, Sun SH, Wu J, Song QH, Zou HS, Ling ZX. Gut microbiota dysbiosis in Chinese children with type 1 diabetes mellitus: An observational study. World J Gastroenterol 2021; 27:2394-2414. [PMID: 34040330 PMCID: PMC8130045 DOI: 10.3748/wjg.v27.i19.2394] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 02/17/2021] [Accepted: 04/14/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Gut microbiota dysbiosis is reportedly actively involved in autoimmune diseases such as type 1 diabetes mellitus (T1DM). However, the alterations in the gut microbiota and their correlation with fasting blood glucose (FBG) in Chinese children with T1DM remain unclear.
AIM To investigate alterations in the gut microbiota in Chinese children with T1DM and their associations with clinical indicators.
METHODS Samples from 51 children with T1DM and 47 age-matched and gender-matched healthy controls were obtained, to explore the structural and functional alterations in the fecal microbiota. The V3-V4 regions of the 16S rRNA gene were sequenced on a MiSeq instrument, and the association with FBG were analyzed.
RESULTS We found that the bacterial diversity was significantly increased in the T1DM-associated fecal microbiota, and changes in the microbial composition were observed at different taxonomic levels. The T1DM-reduced differential taxa, such as Bacteroides vulgatus ATCC8482, Bacteroides ovatus, Bacteroides xylanisolvens, and Flavonifractor plautii, were negatively correlated with FBG, while the T1DM-enriched taxa, such as Blautia, Eubacterium hallii group, Anaerostipes hadrus, and Dorea longicatena, were positively correlated with FBG. Bacteroides vulgatus ATCC8482, Bacteroides ovatus, the Eubacterium hallii group, and Anaerostipes hadrus, either alone or in combination, could be used as noninvasive diagnostic biomarkers to discriminate children with T1DM from healthy controls. In addition, the functional changes in the T1DM-associated fecal microbiota also suggest that these fecal microbes were associated with altered functions and metabolic activities, such as glycan biosynthesis and metabolism and lipid metabolism, which might play vital roles in the pathogenesis and development of T1DM.
CONCLUSION Our present comprehensive investigation of the T1DM-associated fecal microbiota provides novel insights into the pathogenesis of the disease and sheds light on the diagnosis and treatment of T1DM.
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Affiliation(s)
- Xia Liu
- Department of Intensive Care Unit, Zhejiang University, Hangzhou 310003, Zhejiang Province, China
| | - Yi-Wen 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 310003, Zhejiang Province, China
| | - Li Shao
- Institute of Hepatology and Metabolic Diseases, Hangzhou Normal University, Hangzhou 310000, Zhejiang Province, China
- Institute of Translational Medicine, The Affiliated Hospital of Hangzhou Normal University, Hangzhou 310000, Zhejiang Province, China
| | - Shu-Hong Sun
- Department of Laboratory Medicine, Linyi People’s Hospital, Linyi 276000, Shandong Province, China
| | - Jian 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 310003, Zhejiang Province, China
| | - Qing-Hai Song
- Department of Geriatrics, Lishui Second People's Hospital, Lishui 323000, Zhejiang Province, China
| | - Hong-Sheng Zou
- Department of Intensive Care Unit, People’s Hospital of Rongcheng, Rongcheng 264300, Shandong Province, China
| | - Zong-Xin 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 310003, Zhejiang Province, China
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Koliada A, Moseiko V, Romanenko M, Lushchak O, Kryzhanovska N, Guryanov V, Vaiserman A. Sex differences in the phylum-level human gut microbiota composition. BMC Microbiol 2021; 21:131. [PMID: 33931023 PMCID: PMC8088078 DOI: 10.1186/s12866-021-02198-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 04/16/2021] [Indexed: 12/11/2022] Open
Abstract
Background Evidence was previously provided for sex-related differences in the human gut microbiota composition, and sex-specific discrepancy in hormonal profiles was proposed as a main determinant of these differences. On the basis of these findings, the assumption was made on the role of microbiota in the sexual dimorphism of human diseases. To date, sex differences in fecal microbiota were demonstrated primarily at lower taxonomic levels, whereas phylum-level differences between sexes were reported in few studies only. In the present population-based cross-sectional research, sex differences in the phylum-level human gut microbiota composition were identified in a large (total n = 2301) sample of relatively healthy individuals from Ukraine. Results Relative abundances of Firmicutes and Actinobacteria, as determined by qRT-PCR, were found to be significantly increased, while that of Bacteroidetes was significantly decreased in females compared to males. The Firmicutes to Bacteroidetes (F/B) ratio was significantly increased in females compared to males. Females had 31 % higher odds of having F/B ratio more than 1 than males. This trend was evident in all age groups. The difference between sexes was even more pronounced in the elder individuals (50+): in this age group, female participants had 56 % higher odds of having F/B ratio > 1 than the male ones. Conclusions In conclusion, sex-specific differences in the phylum-level intestinal microbiota composition were observed in the Ukraine population. The F/B ratio was significantly increased in females compared to males. Further investigation is needed to draw strong conclusions regarding the mechanistic basis for sex-specific differences in the gut microbiota composition and regarding the role of these differences in the initiation and progression of human chronic diseases. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02198-y.
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Affiliation(s)
| | | | - Mariana Romanenko
- Institute of Gerontology, Vyshgorodskaya st. 67, 04114, Kyiv, Ukraine
| | - Oleh Lushchak
- Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine.,Research and Development Institute, Ivano-Frankivsk, Ukraine
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Zhang CY, Peng XX, Shao HQ, Li XY, Wu Y, Tan ZJ. Gut Microbiota Comparison Between Intestinal Contents and Mucosa in Mice With Repeated Stress-Related Diarrhea Provides Novel Insight. Front Microbiol 2021; 12:626691. [PMID: 33708183 PMCID: PMC7940357 DOI: 10.3389/fmicb.2021.626691] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 01/25/2021] [Indexed: 12/20/2022] Open
Abstract
Repeated stress-related diarrhea is a kind of functional bowel disorders (FBDs) that are mainly stemming from dysregulation of the microbiota–gut–brain axis mediated by a complex interplay of 5-hydroxytryptophan (5-HT). Intestinal content and intestinal mucosa microbiota belong to two different community systems, and the role of the two microbiota community systems in repeated stress-related diarrhea remains largely unknown. In order to ascertain the difference in composition and the potential function between intestinal content and intestinal mucosa microbiota response on repeated stress-related diarrhea, we collected intestinal contents and mucosa of mice with repeated stress-related diarrhea for 16S rRNA PacBio SMRT gene full-length sequencing, and with the digital modeling method of bacterial species abundance, the correlations among the two microbiota community systems and serum 5-HT concentration were analyzed. We found that the microbiotal composition differences both in intestinal contents and mucosa were consistent throughout all the phylogenetic ranks, with an increasing level of resolution. Compared with intestinal content microbiota, the diversity and composition of microbiota colonized in intestinal mucosa are more sensitive to repeated stress-related diarrhea. The PICRUSt2 of metagenomic function analysis found that repeated stress-related diarrhea is more likely to perturb the intestinal mucosa microbiota metagenomic functions involved in the neural response. We further found that the mucosal microbiota-based relative abundance model was more predictive on serum 5-HT concentration with the methods of machine-learning model established and multivariate dimensionality reduction (R2 = 0.876). These findings suggest that the intestinal mucosa microbiota might serve as a novel potential prediction model for the serum 5-HT concentration involvement in the repeated stress-related diarrhea, in addition to focusing on its mechanism in the gastrointestinal dysfunction.
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Affiliation(s)
- Chen-Yang Zhang
- College of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China.,Hunan Key Laboratory of Traditional Chinese Medicine (TCM) Prescription and Syndromes Translational Medicine, Changsha, China
| | - Xin-Xin Peng
- Department of Pediatrics, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Hao-Qing Shao
- College of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Xiao-Ya Li
- College of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Yi Wu
- College of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
| | - Zhou-Jin Tan
- College of Traditional Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China.,Hunan Key Laboratory of Traditional Chinese Medicine (TCM) Prescription and Syndromes Translational Medicine, Changsha, China
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Qi C, Ding M, Li S, Zhou Q, Li D, Yu R, Sun J. Sex-dependent modulation of immune development in mice by secretory IgA-coated Lactobacillus reuteri isolated from breast milk. J Dairy Sci 2021; 104:3863-3875. [PMID: 33612242 DOI: 10.3168/jds.2020-19437] [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: 08/09/2020] [Accepted: 12/04/2020] [Indexed: 12/11/2022]
Abstract
Lactobacilli, commonly present in human breast milk, appear to colonize the neonatal gut and provide protection to infants against various infections, thereby promoting immune development. This study examined the potential probiotic role of breast milk-derived Lactobacillus reuteri FN041 in immune development in mice. The FN041 were gavaged either to BALB/c dams (n = 6/group) during the lactation period or to their offspring (n = 6/sex per intervention) after weaning separately (cointervention). All interventions induced increased intestinal barriers in 5-wk-old offspring, especially in the females. Immunoglobulin A plasmocytes in ileal tissue and secretory IgA (sIgA) in ileal contents increased in all 5-wk-old offspring of cointervention. The activation of mRNA expression of 17 genes was sex-dependent, especially in 5-wk-old offspring. Broader genes were regulated in female mice. The effect of cointervention on the Shannon index of total microbiota is sex-related. The Shannon index of sIgA-coated microbiota increased in both sexes. The sIgA-coated microbiota showed intergroup differences according to β diversity, especially in female mice that showed an increase in Bifidobacterium of Actinobacteria. The sIgA-coated Bifidobacterium was positively correlated with mRNA expression of Tlr9. The sIgA-coated Lactobacillus in male offspring was negatively correlated with mRNA expression of Cldn2. In conclusion, L. reuteri FN041 promoted the production of intestinal sIgA and the expression of genes related to antimicrobial peptides in the offspring and enhanced the function of the mucosal barrier, depending on sex and treatment manner.
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Affiliation(s)
- Ce Qi
- Institute of Nutrition and Health, Qingdao University, Qingdao 266071, PR China
| | - Mengfan Ding
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China
| | - Shuangqi Li
- Guangzhou Fine Nutrition Research Center, Guangzhou, 510700, PR China
| | - Qin Zhou
- Department of Neonatology, The Affiliated Wuxi Maturity and Child Health Care Hospital of Nanjing Medical University, Wuxi 214002, PR China
| | - Duo Li
- Institute of Nutrition and Health, Qingdao University, Qingdao 266071, PR China
| | - Renqiang Yu
- Department of Neonatology, The Affiliated Wuxi Maturity and Child Health Care Hospital of Nanjing Medical University, Wuxi 214002, PR China.
| | - Jin Sun
- Institute of Nutrition and Health, Qingdao University, Qingdao 266071, PR China.
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Straub TJ, Chou WC, Manson AL, Schreiber HL, Walker BJ, Desjardins CA, Chapman SB, Kaspar KL, Kahsai OJ, Traylor E, Dodson KW, Hullar MAJ, Hultgren SJ, Khoo C, Earl AM. Limited effects of long-term daily cranberry consumption on the gut microbiome in a placebo-controlled study of women with recurrent urinary tract infections. BMC Microbiol 2021; 21:53. [PMID: 33596852 PMCID: PMC7890861 DOI: 10.1186/s12866-021-02106-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 01/28/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Urinary tract infections (UTIs) affect 15 million women each year in the United States, with > 20% experiencing frequent recurrent UTIs. A recent placebo-controlled clinical trial found a 39% reduction in UTI symptoms among recurrent UTI sufferers who consumed a daily cranberry beverage for 24 weeks. Using metagenomic sequencing of stool from a subset of these trial participants, we assessed the impact of cranberry consumption on the gut microbiota, a reservoir for UTI-causing pathogens such as Escherichia coli, which causes > 80% of UTIs. RESULTS The overall taxonomic composition, community diversity, carriage of functional pathways and gene families, and relative abundances of the vast majority of observed bacterial taxa, including E. coli, were not changed significantly by cranberry consumption. However, one unnamed Flavonifractor species (OTU41), which represented ≤1% of the overall metagenome, was significantly less abundant in cranberry consumers compared to placebo at trial completion. Given Flavonifractor's association with negative human health effects, we sought to determine OTU41 characteristic genes that may explain its differential abundance and/or relationship to key host functions. Using comparative genomic and metagenomic techniques, we identified genes in OTU41 related to transport and metabolism of various compounds, including tryptophan and cobalamin, which have been shown to play roles in host-microbe interactions. CONCLUSION While our results indicated that cranberry juice consumption had little impact on global measures of the microbiome, we found one unnamed Flavonifractor species differed significantly between study arms. This suggests further studies are needed to assess the role of cranberry consumption and Flavonifractor in health and wellbeing in the context of recurrent UTI. TRIAL REGISTRATION Clinical trial registration number: ClinicalTrials.gov NCT01776021 .
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Affiliation(s)
- Timothy J Straub
- Infectious Disease & Microbiome Program, Broad Institute, 415 Main Street, Cambridge, MA, 02142, USA
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Wen-Chi Chou
- Infectious Disease & Microbiome Program, Broad Institute, 415 Main Street, Cambridge, MA, 02142, USA
| | - Abigail L Manson
- Infectious Disease & Microbiome Program, Broad Institute, 415 Main Street, Cambridge, MA, 02142, USA
| | - Henry L Schreiber
- Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
- Center for Women's Infectious Disease Research, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
- Division of Biology & Biological Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Bruce J Walker
- Infectious Disease & Microbiome Program, Broad Institute, 415 Main Street, Cambridge, MA, 02142, USA
| | - Christopher A Desjardins
- Infectious Disease & Microbiome Program, Broad Institute, 415 Main Street, Cambridge, MA, 02142, USA
| | - Sinéad B Chapman
- Infectious Disease & Microbiome Program, Broad Institute, 415 Main Street, Cambridge, MA, 02142, USA
| | | | - Orsalem J Kahsai
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Elizabeth Traylor
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Karen W Dodson
- Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
- Center for Women's Infectious Disease Research, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
| | - Meredith A J Hullar
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Scott J Hultgren
- Department of Molecular Microbiology, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
- Center for Women's Infectious Disease Research, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
| | | | - Ashlee M Earl
- Infectious Disease & Microbiome Program, Broad Institute, 415 Main Street, Cambridge, MA, 02142, USA.
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Abstract
Health and lifespan disparities between sexes are dependent on the immune responses. Men and women have different life styles which determine the environment, nutritional requirements and their interactions with the sex hormones. Sexual dimorphism in innate and adaptive immunity determines responses to infections and other environmental factors regulating health and diseases. Sex hormones regulate immune responses through the expression of receptors which differ for female and male hormones. Estrogen receptors are expressed in brain, lymphoid tissue cells and many immune cells while androgen receptors are limited in expression. Genetic, epigenetic factors and X chromosome linked immune function genes are important in enhanced adaptive immunity in females, leading to production of higher levels of antibodies compared to males. Different nutritional requirements and hormonal control of the mucosal microbiome and its function regulate mucosal immunity. Hormonal changes during various aspects of life and during aging control immune senescence. Evolutionarily, females have an advantage during young age when they are protected from infections by heightened immune reactivity though during aging that can lead to pathologies. Considering the sexual dimorphism in immunity, guidelines need to be established for sex-based treatments for optimal response.
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Affiliation(s)
- Veena Taneja
- Department of Immunology and Rheumatology, Mayo Clinic, Rochester, MN, United States.
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Hu D, Chao Y, Li Y, Peng X, Wang C, Wang Z, Zhang D, Li K. Effect of Gender Bias on Equine Fecal Microbiota. J Equine Vet Sci 2020; 97:103355. [PMID: 33478764 DOI: 10.1016/j.jevs.2020.103355] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 11/25/2020] [Accepted: 12/03/2020] [Indexed: 12/11/2022]
Abstract
Many studies on human intestinal microbiota indicate that gender difference is one of the key factors influencing microbial community composition. To date, the degree of influence that gender has on equid intestinal microbiota has not been reported. Thus, microbiota was analyzed in feces of seven female Przewalski's horses (FRPHs) and seven male Przewalski's horses (MRPHs) in this study, determining which microbiota characteristics respond to gender biases. The microbial community composition and structure were explored by 16S rRNA sequencing, followed by diversity analysis and difference analysis. Female Przewalski's horses showed higher Shannon diversity than MRPHs, no difference in Simpson diversity, and displayed difference in beta diversity. Although gender had little effect on the overall microbiota, it significantly changed the dominant microbial community in each classification level. Male Przewalski's horses contained significantly higher amounts of microorganisms related with diseases, including spirochetes (phylum), deltaproteobacteria (class), fibrobacteria (class), spirochaetia (class), desulfovibrionales (order), fibrobacterales (order), spirochaetales (order), and spirochaetaceae (family). Female Przewalski's horses showed less than MRPHs in the top 10 genera. To our knowledge, this study is the first to document the gender-related intestinal microbiota profile in equines and discovered notable differences between the gender, which suggests that gender should be considered as a biological variable in future microbiota studies.
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Affiliation(s)
- Dini Hu
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Yuzhu Chao
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Youlin Li
- Central College, British Columbia, Canada
| | - Xiangqian Peng
- Xinjiang Kalamaili Mountain Ungulate Nature Reserve Management Center, Urumqi, China
| | - Chen Wang
- Xinjiang Kalamaili Mountain Ungulate Nature Reserve Management Center, Urumqi, China
| | - Zhenbiao Wang
- Xinjiang Research Center for Breeding Przewalski's Horse, Urumqi, China
| | - Dong Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Kai Li
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China.
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Swann JR, Rajilic-Stojanovic M, Salonen A, Sakwinska O, Gill C, Meynier A, Fança-Berthon P, Schelkle B, Segata N, Shortt C, Tuohy K, Hasselwander O. Considerations for the design and conduct of human gut microbiota intervention studies relating to foods. Eur J Nutr 2020; 59:3347-3368. [PMID: 32246263 PMCID: PMC7669793 DOI: 10.1007/s00394-020-02232-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 03/18/2020] [Indexed: 12/15/2022]
Abstract
With the growing appreciation for the influence of the intestinal microbiota on human health, there is increasing motivation to design and refine interventions to promote favorable shifts in the microbiota and their interactions with the host. Technological advances have improved our understanding and ability to measure this indigenous population and the impact of such interventions. However, the rapid growth and evolution of the field, as well as the diversity of methods used, parameters measured and populations studied, make it difficult to interpret the significance of the findings and translate their outcomes to the wider population. This can prevent comparisons across studies and hinder the drawing of appropriate conclusions. This review outlines considerations to facilitate the design, implementation and interpretation of human gut microbiota intervention studies relating to foods based upon our current understanding of the intestinal microbiota, its functionality and interactions with the human host. This includes parameters associated with study design, eligibility criteria, statistical considerations, characterization of products and the measurement of compliance. Methodologies and markers to assess compositional and functional changes in the microbiota, following interventions are discussed in addition to approaches to assess changes in microbiota-host interactions and host responses. Last, EU legislative aspects in relation to foods and health claims are presented. While it is appreciated that the field of gastrointestinal microbiology is rapidly evolving, such guidance will assist in the design and interpretation of human gut microbiota interventional studies relating to foods.
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Affiliation(s)
- J. R. Swann
- Division of Integrative Systems Medicine and Digestive Diseases, Imperial College London, London, UK
- School of Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK
| | - M. Rajilic-Stojanovic
- Department for Biochemical Engineering and Biotechnology, Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | - A. Salonen
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - O. Sakwinska
- Société Des Produits Nestlé S.A, Nestlé Research, Lausanne, Switzerland
| | - C. Gill
- Nutrition Innovation Centre for Food and Health, Centre for Molecular Biosciences, Ulster University, Londonderry, Northern Ireland, UK
| | | | | | | | - N. Segata
- Department CIBIO, University of Trento, Trento, Italy
| | - C. Shortt
- Johnson & Johnson Consumer Services EAME Ltd., Foundation Park, Maidenhead, UK
| | - K. Tuohy
- Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach, Trento, Italy
| | - O. Hasselwander
- DuPont Nutrition and Biosciences, c/o Danisco (UK) Limited, Reigate, UK
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Wu H, Yuan Y, Pan H. Comparison of fecal microbiota composition of blue sheep fed Lolium perenne versus Sorghum sudanense. Can J Microbiol 2020; 67:372-380. [PMID: 33242254 DOI: 10.1139/cjm-2020-0333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Lolium perenne L. and Sorghum sudanense (Piper) Stapf. are 2 common forages fed to blue sheep (Pseudois nayaur Hodgson, 1833) in captivity. However, the effect of these 2 forages on the gastrointestinal microbiota is largely unknown. We analyzed the diversity of the microbiota in the feces of captive blue sheep fed with L. perenne (group F1) and S. sudanense (group F2) by 16S rRNA sequencing. A total of 20 major phyla and 29 genera fecal bacterial communities were detected in the 2 groups. The F1 and F2 groups shared common microbiota at the phylum level, which mainly consisted of Firmicutes and Bacteroidetes. Ruminococcaceae_UCG-005, Eubacterium_coprostanoligenes_group, Ruminococcaceae_UCG-013, and Ruminococcaceae_UCG-010 were the top 4 dominant taxa at the genus level. The percentage of Ruminococcaceae_UCG-010 was significantly higher in the F2 group (∼2.75-fold) than in F1 group. The diversity and abundance of the microbial community in F2 was higher than that in F1. Although both of L. perenne and S. sudanense affect the metabolism of the gastrointestinal microbiota of blue sheep, the S. sudanense improves more aspects of metabolism and biogenesis. In summary, our results demonstrated that L. perenne and S. sudanense affect blue sheep gastrointestinal microbiota in different ways. But S. sudanense efficiently improved the gastrointestinal microbiota of blue sheep.
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Affiliation(s)
- Haili Wu
- Shanghai Zoo, Shanghai 200335, P.R. China
| | | | - Hongjie Pan
- National Health Commission (NHC) Key Laboratory of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Fudan University, Shanghai 200032, P.R. China
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Yang M, Hong G, Jin Y, Li Y, Li G, Hou X. Mucosal-Associated Microbiota Other Than Luminal Microbiota Has a Close Relationship With Diarrhea-Predominant Irritable Bowel Syndrome. Front Cell Infect Microbiol 2020; 10:515614. [PMID: 33224895 PMCID: PMC7667041 DOI: 10.3389/fcimb.2020.515614] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 09/17/2020] [Indexed: 12/12/2022] Open
Abstract
Studies have linked dysbiosis of gut microbiota to irritable bowel syndrome (IBS). However, dysbiosis only referring to structural changes without functional alteration or focusing on luminal microbiota are incomplete. To fully investigate the relationship between gut microbiota and clinical symptoms of Irritable Bowel Syndrome with Diarrhea (IBS-D), fecal samples, and rectal mucosal biopsies were collected from 69 IBS-D patients and 20 healthy controls (HCs) before and during endoscopy without bowel preparation. 16S rRNA genes were amplified and sequenced, and QIIME pipeline was used to process the composition of microbial communities. PICRUSt was used to predict and categorize microbial function. The composition of mucosa-associated microbiota (MAM) was significantly different in IBS-D patients compared to HCs; while no difference in luminal microbiota (LM). MAM, but not LM, was significantly positively correlated with abdominal pain and bloating. A greater number of MAM functional genes changed in IBS-D patients than that of LM compared with HCs. Metabolic alteration in MAM not in LM was related to abdominal pain and bloating. There was a close relationship between the composition and function of MAM and clinical symptoms in IBS-D patients which suggests the important role of MAM in pathogenesis and therapies in IBS-D and it should be highlighted in the future.
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Affiliation(s)
- Min Yang
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Gaichao Hong
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu Jin
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Li
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Gangping Li
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaohua Hou
- Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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