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Tan R, Yang X, Lu H, Shen Y. One-step formation of polymorphous sperm-like microswimmers by vortex turbulence-assisted microfluidics. Nat Commun 2024; 15:4761. [PMID: 38834563 DOI: 10.1038/s41467-024-49043-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/21/2024] [Indexed: 06/06/2024] Open
Abstract
Microswimmers are considered promising candidates for active cargo delivery to benefit a wide spectrum of biomedical applications. Yet, big challenges still remain in designing the microswimmers with effective propelling, desirable loading and adaptive releasing abilities all in one. Inspired by the morphology and biofunction of spermatozoa, we report a one-step formation strategy of polymorphous sperm-like magnetic microswimmers (PSMs) by developing a vortex turbulence-assisted microfluidics (VTAM) platform. The fabricated PSM is biodegradable with a core-shell head and flexible tail, and their morphology can be adjusted by vortex flow rotation speed and calcium chloride solution concentration. Benefiting from the sperm-like design, our PSM exhibits both effective motion ability under remote mag/netic actuation and protective encapsulation ability for material loading. Further, it can also realize the stable sustain release after alginate-chitosan-alginate (ACA) layer coating modification. This research proposes and verifies a new strategy for the sperm-like microswimmer construction, offering an alternative solution for the target delivery of diverse drugs and biologics for future biomedical treatment. Moreover, the proposed VTAM could also be a general method for other sophisticated polymorphous structures fabrication that isn't achievable by conventional laminar flow.
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Affiliation(s)
- Rong Tan
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Xiong Yang
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Haojian Lu
- State Key Laboratory of Industrial Control and Technology, Zhejiang University, Hangzhou, 310027, China
- Institute of Cyber-Systems and Control, the Department of Control Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yajing Shen
- Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
- Center for Smart Manufacturing, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
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2
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Godínez-Oviedo A, Tamplin ML, Bowman JP, Hernández-Iturriaga M. Effects of intrinsic characteristics of Salmonella enterica strains isolated from foods and humans, and their interaction with food matrices during simulated gastric conditions. Int J Food Microbiol 2024; 413:110584. [PMID: 38295484 DOI: 10.1016/j.ijfoodmicro.2024.110584] [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: 09/18/2023] [Revised: 12/21/2023] [Accepted: 01/15/2024] [Indexed: 02/02/2024]
Abstract
The stomach's acidic pH is a crucial barrier against foodborne pathogens such as Salmonella enterica. This study investigated the survival of S. enterica under simulated oral and gastric conditions (SGC; pH 2 for 120 min) as a function of intrinsic pathogen characteristics and food matrix. Fifty-seven S. enterica strains isolated from food and human infections (previously characterized by serotype, virulotype, multi-drug resistance, isolation source, and isolation season) were subjected to SGC using water as a vehicle. Population reduction among the 57 isolates ranged from 2.7 to 4.7 log CFU, revealing that human isolates were inactivated less than food isolates (p = 0.0008). Among food strains, strains isolated during the cold season (food sampled from December to February) displayed the highest reduction (p = 0.00002). Six representatives of the 57 S. enterica strains were selected according to their virulotype and antimicrobial profile. They were further used to evaluate their survival under SGC in four food matrices (water, mango, tomato, and chicken), measuring S. enterica at 30 min intervals. The strains in chicken showed the lowest reduction and inactivation rate (1.42 ± 0.35 log CFU; 0.03 ± 0.005 min-1), followed by tomato (3.75 ± 0.57 log CFU; 0.15 ± 0.02 min-1), water (4.23 ± 0.27 log CFU; 0.17 ± 0.02 min-1), and mango (4.49 ± 0.39 log CFU; 0.17 ± 0.03 min-1). These data suggest that not all S. enterica strains have the same ability to survive under SGC, influencing the probability of arriving into the small intestine.
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Affiliation(s)
- A Godínez-Oviedo
- Departamento de Investigación y Posgrado de Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Col. Las Campanas, 76010 Querétaro, Qro., Mexico; Food Safety and Innovation Centre, Tasmanian Institute of Agriculture, University of Tasmania, Hobart 7005, Australia
| | - M L Tamplin
- Food Safety and Innovation Centre, Tasmanian Institute of Agriculture, University of Tasmania, Hobart 7005, Australia
| | - J P Bowman
- Food Safety and Innovation Centre, Tasmanian Institute of Agriculture, University of Tasmania, Hobart 7005, Australia
| | - M Hernández-Iturriaga
- Departamento de Investigación y Posgrado de Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Col. Las Campanas, 76010 Querétaro, Qro., Mexico.
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3
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Ekmektzoglou K, Rokkas T. H. Pylori Treatment in the COVID-19 Era. What Have We Learned So Far? Curr Gastroenterol Rep 2024; 26:86-91. [PMID: 38305956 PMCID: PMC10937748 DOI: 10.1007/s11894-024-00922-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/27/2024] [Indexed: 02/03/2024]
Abstract
PURPOSE OF REVIEW CoronaVirus Disease of 2019 (COVID-19) has negatively influenced the management of multiple conditions in regards to the gastroenterology patient. An equivalent change in the management of Helicobacter pylori (H. pylori)-related diseases was reported, as practically no eradication treatment was offered during most of the pandemic. Given the scarcity of published data, we performed a literature review trying to elucidate the effect of COVID-19 on H. pylori treatment. RECENT FINDINGS COVID-19 has produced more questions than answers as to the outcome of COVID-19 in H. Pylori infected patients, post-COVID-19 patients treated for H. pylori, acid suppression and COVID-19 incidence and outcomes, and H. pylori eradication treatment in patients having recovered from COVID-19. We strongly believe that this scientific uncertainty produced by the COVID-19 pandemic has set up the stage for an incremental change in H. pylori treatment as COVID-19 has offered us the chance to speed up how we will, in the near future, approach patients with a possible Η. pylori infection.
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Affiliation(s)
- Konstantinos Ekmektzoglou
- School of Medicine, European University Cyprus, 6 Diogenis Str., 2404 Engomi, 22006, Nicosia, 1516, Cyprus.
| | - Theodore Rokkas
- School of Medicine, European University Cyprus, 6 Diogenis Str., 2404 Engomi, 22006, Nicosia, 1516, Cyprus
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4
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Taylor L, McCaddon A, Wolffenbuttel BHR. Creating a Framework for Treating Autoimmune Gastritis-The Case for Replacing Lost Acid. Nutrients 2024; 16:662. [PMID: 38474790 DOI: 10.3390/nu16050662] [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: 01/26/2024] [Revised: 02/18/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024] Open
Abstract
Autoimmune gastritis (AIG) is characterized by the destruction of gastric parietal cells, resulting in hypochlorhydria and eventual achlorhydria, as oxyntic glands in the corpus are destroyed and become atrophic. The permanent loss of gastric acid has many impacts-both theoretical and documented. The most concerning of these are hypergastrinemia and increased N-nitroso compounds, both of which increase the risk of gastric cancers. While known deficiencies of B12 and iron are often replaced in AIG, acid is not. Moreover, patients with AIG are often prescribed acid suppression for a stomach that is decidedly no longer acidic, worsening the sequelae of gastric atrophy. Betaine hydrochloride (BHCL) is a short-acting acidifying agent, available over the counter in capsule form. Mealtime acid supplementation has an historic basis and could ameliorate many AIG-related gastrointestinal symptoms. Theoretically, acidification could also reduce the potential for hypergastrinemia and the production of N-nitroso compounds, consequently reducing the risk of gastric cancers. Supplemental vitamin C may also help in preventing gastric N-nitroso formation, regardless of the gastric pH. This narrative review describes the functions of gastric acid in gastrointestinal and immune health, documents the effects of hypochlorhydria in AIG, and proposes potential options for safely re-establishing the acid milieu of the stomach for patients with AIG.
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Affiliation(s)
- Lori Taylor
- Faculty of Integrative and Functional Nutrition, Saybrook University, Pasadena, CA 91103, USA
| | - Andrew McCaddon
- Faculty of Social and Life Sciences, Wrexham University, Wrexham LL11 2AW, UK
| | - Bruce H R Wolffenbuttel
- University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
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5
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Gopu V, Camacho FR, Toma R, Torres PJ, Cai Y, Krishnan S, Rajagopal S, Tily H, Vuyisich M, Banavar G. An accurate aging clock developed from large-scale gut microbiome and human gene expression data. iScience 2024; 27:108538. [PMID: 38230258 PMCID: PMC10790003 DOI: 10.1016/j.isci.2023.108538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 01/18/2021] [Accepted: 11/20/2023] [Indexed: 01/18/2024] Open
Abstract
Accurate measurement of the biological markers of the aging process could provide an "aging clock" measuring predicted longevity and enable the quantification of the effects of specific lifestyle choices on healthy aging. Using machine learning techniques, we demonstrate that chronological age can be predicted accurately from (1) the expression level of human genes in capillary blood and (2) the expression level of microbial genes in stool samples. The latter uses a very large metatranscriptomic dataset, stool samples from 90,303 individuals, which arguably results in a higher quality microbiome-aging model than prior work. Our analysis suggests associations between biological age and lifestyle/health factors, e.g., people on a paleo diet or with IBS tend to have higher model-predicted ages and people on a vegetarian diet tend to have lower model-predicted ages. We delineate the key pathways of systems-level biological decline based on the age-specific features of our model.
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Affiliation(s)
- Vishakh Gopu
- Viome Research Institute, Viome Life Sciences, Inc, Seattle, NY, USA
| | | | - Ryan Toma
- Viome Research Institute, Viome Life Sciences, Inc, Seattle, NY, USA
| | - Pedro J. Torres
- Viome Research Institute, Viome Life Sciences, Inc, Seattle, NY, USA
| | - Ying Cai
- Viome Research Institute, Viome Life Sciences, Inc, Seattle, NY, USA
| | - Subha Krishnan
- Viome Research Institute, Viome Life Sciences, Inc, Seattle, NY, USA
| | | | - Hal Tily
- Viome Research Institute, Viome Life Sciences, Inc, Seattle, NY, USA
| | - Momchilo Vuyisich
- Viome Research Institute, Viome Life Sciences, Inc, Seattle, NY, USA
| | - Guruduth Banavar
- Viome Research Institute, Viome Life Sciences, Inc, Seattle, NY, USA
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Sandrasaigaran P, Mohan S, Segaran NS, Lee TY, Radu S, Hasan H. Prevalence of multi-antimicrobial resistant non-typhoidal Salmonella isolated from filth flies at wet markets in Klang, Malaysia, and their survival in the simulated gastric fluid. Int J Food Microbiol 2023; 407:110390. [PMID: 37722349 DOI: 10.1016/j.ijfoodmicro.2023.110390] [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] [Revised: 08/30/2023] [Accepted: 09/02/2023] [Indexed: 09/20/2023]
Abstract
Filth flies at wet markets can be a vector harbouring multiple antimicrobial-resistant (MAR) nontyphoidal Salmonella (NTS), and such strains are a significant threat to public health as they may cause severe infections in humans. This study aims to investigate the prevalence of antimicrobial-resistant NTS, especially Salmonella Enteritidis and S. Typhimurium harboured by filth flies at wet markets, and investigate their survival in the simulated gastric fluid (SGF). Filth flies (n = 90) were captured from wet markets in Klang, Malaysia, and processed to isolate Salmonella spp. The isolates (n = 16) were identified using the multiplex-touchdown PCR and assessed their antimicrobial susceptibility against 11 antimicrobial agents. Finally, three isolates with the highest MAR index were subjected to SGF survival tests. It was observed that 17.8 % of flies (n = 16/90) harbouring Salmonella, out of which 10 % (n = 9/90) was S. Enteritidis, 2.2 % (n = 2/90) was S. Typhimurium, and 5.6 % was unidentified serotypes of Salmonella enterica subsp. I. 43.8 % (n = 7/16) were confirmed as MAR, and they were observed to be resistant against ampicillin, chloramphenicol, kanamycin, streptomycin, and nalidixic acid. Three strains, F35, F75, and F85 demonstrated the highest MAR index and were able to survive (>6-log10) in the SGF (180 min), indicating their potential virulence and invasiveness. This study provides significant insights into the prevalence and severity of MAR nontyphoidal Salmonella harboured by filth flies in wet markets, which may help inform strategies for controlling the spread and outbreak of foodborne disease.
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Affiliation(s)
- Pratheep Sandrasaigaran
- Department of Biotechnology, School of Biotechnology, Manipal International University, Nilai, Negeri Sembilan, Malaysia; Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Shuvarnah Mohan
- Department of Biotechnology, School of Biotechnology, Manipal International University, Nilai, Negeri Sembilan, Malaysia
| | - Nithiyha Sandara Segaran
- Department of Biotechnology, School of Biotechnology, Manipal International University, Nilai, Negeri Sembilan, Malaysia
| | - Tze Yan Lee
- School of Liberal Arts, Science and Technology (PUScLST), Perdana University, Wisma Chase Perdana, Changkat Semantan Damansara Heights, 50490 Kuala Lumpur, Malaysia
| | - Son Radu
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Hanan Hasan
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
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7
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Kitamoto S, Kamada N. The oral-gut axis: a missing piece in the IBD puzzle. Inflamm Regen 2023; 43:54. [PMID: 37932859 PMCID: PMC10626704 DOI: 10.1186/s41232-023-00304-3] [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: 09/07/2023] [Accepted: 10/17/2023] [Indexed: 11/08/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a multifactorial intractable intestinal disease. Focusing on only one facet of the pathogenesis of IBD is insufficient to fully capture the complexity of the disease, and results in limited advance in clinical management. Therefore, it is critical to dissect the interactions amongst the multifarious contributors to the pathogenesis to comprehensively understand its pathology and subsequently improve clinical outcomes. In this context, the systemic interactions between organs, particularly the oral-gut axis mediated by host immune cells and resident microorganisms, have garnered significant attention in IBD research. More specifically, periodontal disease such as periodontitis has been implicated in augmenting intestinal inflammation beyond the confines of the oral cavity. There is mounting evidence suggesting that potentially harmful oral resident bacteria, termed pathobionts, and pro-inflammatory immune cells from the oral mucosa can migrate to the gastrointestinal tract, thereby potentiating intestinal inflammation. This article aims to provide a holistic overview of the causal relationship between periodontal disease and intestinal inflammation. Furthermore, we will discuss potential determinants that facilitate the translocation of oral pathobionts into the gut, a key event underpinning the oral-gut axis. Unraveling the complex dynamics of microbiota and immunity in the oral-gut continuum will lead to a better understanding of the pathophysiology inherent in both oral and intestinal diseases and the development of prospective therapeutic strategies.
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Affiliation(s)
- Sho Kitamoto
- The World Premier International Research Center (WPI) Immunology Frontier Research Center (IFReC), 1012 IFReC Research Building, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Nobuhiko Kamada
- The World Premier International Research Center (WPI) Immunology Frontier Research Center (IFReC), 1012 IFReC Research Building, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan, 1150 West Medical Center Drive, Ann Arbor, MI, 48109, USA.
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109, USA.
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Dlamini SB, Gigante AM, Hooton SPT, Atterbury RJ. Efficacy of Different Encapsulation Techniques on the Viability and Stability of Diverse Phage under Simulated Gastric Conditions. Microorganisms 2023; 11:2389. [PMID: 37894046 PMCID: PMC10608910 DOI: 10.3390/microorganisms11102389] [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: 08/16/2023] [Revised: 09/11/2023] [Accepted: 09/15/2023] [Indexed: 10/29/2023] Open
Abstract
Salmonella causes a range of diseases in humans and livestock of considerable public health and economic importance. Widespread antimicrobial use, particularly in intensively produced livestock (e.g., poultry and pigs) may contribute to the rise of multidrug-resistant Salmonella strains. Alternative treatments such as bacteriophages have shown promise when used to reduce the intestinal carriage of Salmonella in livestock. However, the digestive enzymes and low pH encountered in the monogastric GI tract can significantly reduce phage viability and impact therapeutic outcomes. This study deployed alginate-carrageenan microcapsules with and without CaCO3 to protect a genomically diverse set of five Salmonella bacteriophages from simulated gastrointestinal conditions. None of the unprotected phage could be recovered following exposure to pH < 3 for 10 min. Alginate-carrageenan encapsulation improved phage viability at pH 2-2.5 after exposure for 10 min, but not at pH 2 after 1 h. Including 1% (w/v) CaCO3 in the formulation further reduced phage loss to <0.5 log10 PFU/mL, even after 1 h at pH 2. In all cases, phage were efficiently released from the microcapsules following a shift to a neutral pH (7.5), simulating passage to the duodenum. In summary, alginate-carrageenan-CaCO3 encapsulation is a promising approach for targeted intestinal delivery of genomically diverse Salmonella bacteriophages.
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Affiliation(s)
- Sicelo B Dlamini
- School of Agricultural Sciences, Faculty of Agriculture and Natural Sciences, University of Mpumalanga, Nelspruit 1200, South Africa
| | - Adriano M Gigante
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, Leicestershire LE12 5RD, UK
| | - Steven P T Hooton
- Department of Genetics and Genome Biology, University of Leicester, University Road, Leicester LE1 7RH, UK
| | - Robert J Atterbury
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington, Leicestershire LE12 5RD, UK
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Debsharma S, Pramanik S, Bindu S, Mazumder S, Das T, Saha D, De R, Nag S, Banerjee C, Siddiqui AA, Ghosh Z, Bandyopadhyay U. Honokiol, an inducer of sirtuin-3, protects against non-steroidal anti-inflammatory drug-induced gastric mucosal mitochondrial pathology, apoptosis and inflammatory tissue injury. Br J Pharmacol 2023; 180:2317-2340. [PMID: 36914615 DOI: 10.1111/bph.16070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 12/22/2022] [Accepted: 03/08/2023] [Indexed: 03/16/2023] Open
Abstract
BACKGROUND AND PURPOSE Mitochondrial oxidative stress, inflammation and apoptosis primarily underlie gastric mucosal injury caused by the widely used non-steroidal anti-inflammatory drugs (NSAIDs). Alternative gastroprotective strategies are therefore needed. Sirtuin-3 pivotally maintains mitochondrial structural integrity and metabolism while preventing oxidative stress; however, its relevance to gastric injury was never explored. Here, we have investigated whether and how sirtuin-3 stimulation by the phytochemical, honokiol, could rescue NSAID-induced gastric injury. EXPERIMENTAL APPROACH Gastric injury in rats induced by indomethacin was used to assess the effects of honokiol. Next-generation sequencing-based transcriptomics followed by functional validation identified the gastroprotective function of sirtuin-3. Flow cytometry, immunoblotting, qRT-PCR and immunohistochemistry were used measure effects on oxidative stress, mitochondrial dynamics, electron transport chain function, and markers of inflammation and apoptosis. Sirtuin-3 deacetylase activity was also estimated and gastric luminal pH was measured. KEY RESULTS Indomethacin down-regulated sirtuin-3 to induce oxidative stress, mitochondrial hyperacetylation, 8-oxoguanine DNA glycosylase 1 depletion, mitochondrial DNA damage, respiratory chain defect and mitochondrial fragmentation leading to severe mucosal injury. Indomethacin dose-dependently inhibited sirtuin-3 deacetylase activity. Honokiol prevented mitochondrial oxidative damage and inflammatory tissue injury by attenuating indomethacin-induced depletion of both sirtuin-3 and its transcriptional regulators PGC1α and ERRα. Honokiol also accelerated gastric wound healing but did not alter gastric acid secretion, unlike lansoprazole. CONCLUSIONS AND IMPLICATIONS Sirtuin-3 stimulation by honokiol prevented and reversed NSAID-induced gastric injury through maintaining mitochondrial integrity. Honokiol did not affect gastric acid secretion. Sirtuin-3 stimulation by honokiol may be utilized as a mitochondria-based, acid-independent novel gastroprotective strategy against NSAIDs.
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Affiliation(s)
- Subhashis Debsharma
- Division of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Saikat Pramanik
- Division of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Samik Bindu
- Department of Zoology, Cooch Behar Panchanan Barma University, Cooch Behar, West Bengal, India
| | - Somnath Mazumder
- Department of Zoology, Raja Peary Mohan College, Uttarpara, West Bengal, India
| | - Troyee Das
- Division of Bioinformatics, Bose Institute, Kolkata, West Bengal, India
| | - Debanjan Saha
- Division of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Rudranil De
- Amity Institute of Biotechnology, Amity University, Kolkata, Kolkata, West Bengal, India
| | - Shiladitya Nag
- Division of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Chinmoy Banerjee
- Division of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Asim Azhar Siddiqui
- Division of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Zhumur Ghosh
- Division of Bioinformatics, Bose Institute, Kolkata, West Bengal, India
| | - Uday Bandyopadhyay
- Division of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
- Division of Molecular Medicine, Bose Institute, Kolkata, West Bengal, India
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Waldum H, Fossmark R. Inflammation and Digestive Cancer. Int J Mol Sci 2023; 24:13503. [PMID: 37686307 PMCID: PMC10487643 DOI: 10.3390/ijms241713503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/25/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
Chronic inflammation is linked to carcinogenesis, particularly in the digestive organs, i.e., the stomach, colon, and liver. The mechanism of this effect has, however, only partly been focused on. In this review, we focus on different forms of chronic hepatitis, chronic inflammatory bowel disease, and chronic gastritis, conditions predisposing individuals to the development of malignancy. Chronic inflammation may cause malignancy because (1) the cause of the chronic inflammation is itself genotoxic, (2) substances released from the inflammatory cells may be genotoxic, (3) the cell death induced by the inflammation induces a compensatory increase in proliferation with an inherent risk of mutation, (4) changes in cell composition due to inflammation may modify function, resulting in hormonal disturbances affecting cellular proliferation. The present review focuses on chronic gastritis (Helicobacter pylori or autoimmune type) since all four mechanisms may be relevant to this condition. Genotoxicity due to the hepatitis B virus is an important factor in hepatocellular cancer and viral infection can similarly be central in the etiology and malignancy of inflammatory bowel diseases. Helicobacter pylori (H. pylori) is the dominating cause of chronic gastritis and has not been shown to be genotoxic, so its carcinogenic effect is most probably due to the induction of atrophic oxyntic gastritis leading to hypergastrinemia.
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Affiliation(s)
- Helge Waldum
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, 7030 Trondheim, Norway;
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11
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Joniak J, Stankovičová H, Budzák Š, Sýkora M, Gaplovská-Kyselá K, Filo J, Cigáň M. Rigidized 3-aminocoumarins as fluorescent probes for strongly acidic environments and rapid yeast vacuolar lumen staining: mechanism and application. Phys Chem Chem Phys 2023. [PMID: 37470103 DOI: 10.1039/d3cp01090b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Coumarins remain one of the most important groups of fluorescent bio-probes, thanks to their high quantum yields, moderate photostability, efficient cell permeation and low (cyto)toxicity. Herein, we introduce new 3-aminocoumarins as turn-on pH probes under strongly acidic conditions and for indicators capable of significantly improving yeast vacuolar lumen staining compared to the commercial CMAC derivatives. We present the details of the on-off switching mechanism revealed by the TD-DFT and ab initio calculations complemented by a Franck-Condon analysis of the probes' emission profiles.
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Affiliation(s)
- Jakub Joniak
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, 842 15, Bratislava, Slovakia.
| | - Henrieta Stankovičová
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, 842 15, Bratislava, Slovakia.
| | - Šimon Budzák
- Department of Chemistry, Faculty of Natural Sciences, Matej Bel University, 974 01, Banská Bystrica, Slovakia
| | - Milan Sýkora
- Laboratory for Advanced Materials, Faculty of Natural Sciences, Comenius University, 842 15, Bratislava, Slovakia
| | - Katarína Gaplovská-Kyselá
- Department of Genetics, Faculty of Natural Sciences, Comenius University, 842 15, Bratislava, Slovakia
| | - Juraj Filo
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, 842 15, Bratislava, Slovakia.
| | - Marek Cigáň
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, 842 15, Bratislava, Slovakia.
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Iida H, Kaibori M, Maehira H, Mori H, Nitta N, Maekawa T, Takebayashi K, Kaida S, Miyake T, Tani M. Colonization of the gastric juice by Candida spp. promotes surgical site infection after hepatectomy. Langenbecks Arch Surg 2023; 408:240. [PMID: 37338609 DOI: 10.1007/s00423-023-02978-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 06/10/2023] [Indexed: 06/21/2023]
Abstract
PURPOSE Candida spp. cause opportunistic infections in conditions of immunodeficiency. Here, we investigated the relationship between colonization of the gastric juice by Candida spp. and surgical site infection (SSI) in hepatectomy. METHODS Consecutive hepatectomy cases between November 2019 and April 2021 were enrolled. Gastric juice samples (collected intraoperatively through a nasogastric tube) were cultured. We compared factors related to patient background, blood test findings, surgical findings, and postoperative complications between the Candida + group (positive for colonization of the gastric juice by Candida spp.) and the Candida - group (negative). In addition, we identified the factors that contribute to SSI. RESULTS There were 29 and 71 patients in the Candida + and Candida - groups, respectively. The Candida + group was significantly older (average age: Candida + 74 years vs. Candida - 69 years; p = 0.02) and contained more patients negative for the hepatitis B and C virus (Candida + 93% vs. Candida - 69%; p = 0.02). SSI was significantly more common in the Candida + group (Candida + 31% vs. Candida - 9%; p = 0.01). Postoperative bile leakage and colonization of the gastric juice by Candida spp. were independent predictors of SSI. CONCLUSION Colonization of the gastric juice by Candida spp. is a risk factor for SSI after hepatectomy.
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Affiliation(s)
- Hiroya Iida
- Department of Surgery, Shiga University of Medical Science, Seta Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan.
| | - Masaki Kaibori
- Department of Surgery, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Hiromitsu Maehira
- Department of Surgery, Shiga University of Medical Science, Seta Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Haruki Mori
- Department of Surgery, Shiga University of Medical Science, Seta Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Nobuhito Nitta
- Department of Surgery, Shiga University of Medical Science, Seta Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Takeru Maekawa
- Department of Surgery, Shiga University of Medical Science, Seta Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Katsushi Takebayashi
- Department of Surgery, Shiga University of Medical Science, Seta Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Sachiko Kaida
- Department of Surgery, Shiga University of Medical Science, Seta Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Toru Miyake
- Department of Surgery, Shiga University of Medical Science, Seta Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Masaji Tani
- Department of Surgery, Shiga University of Medical Science, Seta Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
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Wu HY, Wei ZL, Shi DY, Li HB, Li XM, Yang D, Zhou SQ, Peng XX, Yang ZW, Yin J, Chen TJ, Li JW, Jin M. Simulated Gastric Acid Promotes the Horizontal Transfer of Multidrug Resistance Genes across Bacteria in the Gastrointestinal Tract at Elevated pH Levels. Microbiol Spectr 2023; 11:e0482022. [PMID: 37070984 PMCID: PMC10269839 DOI: 10.1128/spectrum.04820-22] [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: 11/23/2022] [Accepted: 03/31/2023] [Indexed: 04/19/2023] Open
Abstract
The assessment of factors that can promote the transmission of antibiotic resistance genes (ARGs) across bacteria in the gastrointestinal tract is in great demand to understand the occurrence of infections related to antibiotic-resistant bacteria (ARB) in humans. However, whether acid-resistant enteric bacteria can promote ARG transmission in gastric fluid under high-pH conditions remains unknown. This study assessed the effects of simulated gastric fluid (SGF) at different pH levels on the RP4 plasmid-mediated conjugative transfer of ARGs. Moreover, transcriptomic analysis, measurement of reactive oxygen species (ROS) levels, assessment of cell membrane permeability, and real-time quantitative assessment of the expression of key genes were performed to identify the underlying mechanisms. The frequency of conjugative transfer was the highest in SGF at pH 4.5. Antidepressant consumption and certain dietary factors further negatively impacted this situation, with 5.66-fold and 4.26-fold increases in the conjugative transfer frequency being noted upon the addition of sertraline and 10% glucose, respectively, compared with that in the control group without any additives. The induction of ROS generation, the activation of cellular antioxidant systems, increases in cell membrane permeability, and the promotion of adhesive pilus formation were factors potentially contributing to the increased transfer frequency. These findings indicate that conjugative transfer could be enhanced under certain circumstances in SGF at elevated pH levels, thereby facilitating ARG transmission in the gastrointestinal tract. IMPORTANCE The low pH of gastric acid kills unwanted microorganisms, in turn affecting their inhabitation in the intestine. Hence, studies on the factors that influence antibiotic resistance gene (ARG) propagation in the gastrointestinal tract and on the underlying mechanisms are limited. In this study, we constructed a conjugative transfer model in the presence of simulated gastric fluid (SGF) and found that SGF could promote the dissemination of ARGs under high-pH conditions. Furthermore, antidepressant consumption and certain dietary factors could negatively impact this situation. Transcriptomic analysis and a reactive oxygen species assay revealed the overproduction of reactive oxygen species as a potential mechanism by which SGF could promote conjugative transfer. This finding can help provide a comprehensive understanding of the bloom of antibiotic-resistant bacteria in the body and create awareness regarding the risk of ARG transmission due to certain diseases or an improper diet and the subsequent decrease in gastric acid levels.
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Affiliation(s)
- Hai-yan Wu
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Zi-lin Wei
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Dan-yang Shi
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Hai-bei Li
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Xin-mei Li
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Dong Yang
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Shu-qing Zhou
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Xue-xia Peng
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Zhong-wei Yang
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Jing Yin
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Tian-jiao Chen
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Jun-wen Li
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
| | - Min Jin
- Department of Environment and Health, Tianjin Institute of Environmental and Operational Medicine, Key Laboratory of Risk Assessment and Control for Environment and Food Safety, Tianjin, China
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Wang S, Wu D, Wu F, Sun H, Wang X, Meng H, Lin Q, Jin K, Wang F. Prevotella histicola suppresses ferroptosis to mitigate ethanol-induced gastric mucosal lesions in mice. BMC Complement Med Ther 2023; 23:118. [PMID: 37060026 PMCID: PMC10103513 DOI: 10.1186/s12906-023-03946-5] [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: 10/19/2022] [Accepted: 04/04/2023] [Indexed: 04/16/2023] Open
Abstract
BACKGROUND Ethanol-induced gastric mucosal lesions (EGML) is one of the most common digestive disorders for which current therapies have limited outcomes in clinical practice. Prevotella histicola (P. histicola) has shown probiotic efficacy against arthritis, multiple sclerosis and oestrogen deficiency-induced depression in mice; however, its role in EGML remains unclear in spite of its extensive colonisation of the stomach. Ferroptosis, which is characterised by lipid peroxidation, may be involved in EGML. Herein, we aimed to investigate the effects and underlying mechanism of action of P. histicola on EGML in the ferroptosis-dependent pathway. METHODS P. histicola was intragastrically administered for a week, and deferoxamine (DFO), a ferroptosis inhibitor, was intraperitoneally injected prior to oral ethanol administration. The gastric mucosal lesions and ferroptosis were assessed via histopathological examinations, quantitative real-time PCR, Western blot, immunohistochemistry and immunofluorescence. RESULTS P. histicola was originally found to attenuate EGML by reducing histopathological changes and lipid reactive oxygen species (ROS) accumulation. The pro-ferroptotic genes of Transferrin Receptor (TFR1), Solute Carrier Family 39 Member 14 (SLC39A14), Haem Oxygenase-1 (HMOX-1), Acyl-CoA Synthetase Long-chain Family Member 4 (ACSL4), Cyclooxygenase 2 (COX-2) and mitochondrial Voltage-dependent Anion Channels (VDACs) were up-regulated; the anti-ferroptotic System Xc-/Glutathione Peroxidase 4 (GPX4) axis was inhibited after ethanol administration. However, the changes of histopathology and ferroptosis-related parameters induced by ethanol were reversed by DFO. Furthermore, P. histicola treatment significantly downregulated the expression of ACSL4, HMOX-1 and COX-2, as well as TFR1 and SLC39A14, on mRNA or the protein level, while activating the System Xc-/GPX4 axis. CONCLUSIONS We found that P. histicola reduces ferroptosis to attenuate EGML by inhibiting the ACSL4- and VDAC-dependent pro-ferroptotic pathways and activating the anti-ferroptotic System Xc-/GPX4 axis.
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Affiliation(s)
- Sisi Wang
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Du Wu
- Hangzhou Wuyunshan Hospital Hangzhou Health Promotion Institution, Hangzhou, China
| | - Fangquan Wu
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Hongxia Sun
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xinyu Wang
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Hongbing Meng
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Qingqing Lin
- Department of Hemodialysis, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Keke Jin
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China.
| | - Fangyan Wang
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China.
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15
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Yue Z, Fan Z, Zhang H, Feng B, Wu C, Chen S, Ouyang J, Fan H, Weng P, Feng H, Chen S, Dong M, Xu A, Huang S. Differential roles of the fish chitinous membrane in gut barrier immunity and digestive compartments. EMBO Rep 2023; 24:e56645. [PMID: 36852962 PMCID: PMC10074124 DOI: 10.15252/embr.202256645] [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: 12/10/2022] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 03/01/2023] Open
Abstract
The chitin-based peritrophic matrix (PM) is a structure critical for both gut immunity and digestion in invertebrates. PM was traditionally considered lost in all vertebrates, but a PM-like chitinous membrane (CM) has recently been discovered in fishes, which may increase the knowledge on vertebrate gut physiology and structural evolution. Here, we show that in zebrafish, the CM affects ingestion behavior, microbial homeostasis, epithelial renewal, digestion, growth, and longevity. Young mutant fish without CM appear healthy and are able to complete their life cycle normally, but with increasing age they develop gut inflammation, resulting in gut atrophy. Unlike mammals, zebrafish have no visible gel-forming mucin layers to protect their gut epithelia, but at least in young fish, the CM is not a prerequisite for the antibacterial gut immunity. These findings provide new insights into the role of the CM in fish prosperity and its eventual loss in tetrapods. These findings may also help to improve fish health and conservation, as well as to advance the understanding of vertebrate gut physiology and human intestinal diseases.
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Affiliation(s)
- Zirui Yue
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
| | - Zhaoyu Fan
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Hao Zhang
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Buhan Feng
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Chengyi Wu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life SciencesXiamen UniversityXiamenChina
| | - Shenghui Chen
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Jihua Ouyang
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Huiping Fan
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Panwei Weng
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Huixiong Feng
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Shangwu Chen
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Meiling Dong
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Anlong Xu
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
- School of Life SciencesBeijing University of Chinese MedicineBeijingChina
| | - Shengfeng Huang
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
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16
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Hagen EH, Blackwell AD, Lightner AD, Sullivan RJ. Homo medicus: The transition to meat eating increased pathogen pressure and the use of pharmacological plants in Homo. AMERICAN JOURNAL OF BIOLOGICAL ANTHROPOLOGY 2023; 180:589-617. [PMID: 36815505 DOI: 10.1002/ajpa.24718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 01/31/2023] [Accepted: 02/08/2023] [Indexed: 02/24/2023]
Abstract
The human lineage transitioned to a more carnivorous niche 2.6 mya and evolved a large body size and slower life history, which likely increased zoonotic pathogen pressure. Evidence for this increase includes increased zoonotic infections in modern hunter-gatherers and bushmeat hunters, exceptionally low stomach pH compared to other primates, and divergence in immune-related genes. These all point to change, and probably intensification, in the infectious disease environment of Homo compared to earlier hominins and other apes. At the same time, the brain, an organ in which immune responses are constrained, began to triple in size. We propose that the combination of increased zoonotic pathogen pressure and the challenges of defending a large brain and body from pathogens in a long-lived mammal, selected for intensification of the plant-based self-medication strategies already in place in apes and other primates. In support, there is evidence of medicinal plant use by hominins in the middle Paleolithic, and all cultures today have sophisticated, plant-based medical systems, add spices to food, and regularly consume psychoactive plant substances that are harmful to helminths and other pathogens. We propose that the computational challenges of discovering effective plant-based treatments, the consequent ability to consume more energy-rich animal foods, and the reduced reliance on energetically-costly immune responses helped select for increased cognitive abilities and unique exchange relationships in Homo. In the story of human evolution, which has long emphasized hunting skills, medical skills had an equal role to play.
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Affiliation(s)
- Edward H Hagen
- Department of Anthropology, Washington State University, Pullman, Washington, USA
| | - Aaron D Blackwell
- Department of Anthropology, Washington State University, Pullman, Washington, USA
| | - Aaron D Lightner
- Department of Anthropology, Washington State University, Pullman, Washington, USA
- Department of the Study of Religion, Aarhus University, Aarhus, Denmark
| | - Roger J Sullivan
- Department of Anthropology, California State University, Sacramento, California, USA
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17
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GOMEZ CARLYB, MITCHELL JADE, RYSER ELLIOTT, MARKS BRADLEYP. Listeriosis Risk Model for Cancer Patients Who Consume Ready-to-Eat Salad. J Food Prot 2023; 86:100087. [PMID: 37004807 DOI: 10.1016/j.jfp.2023.100087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 03/20/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023]
Abstract
The foodborne pathogen Listeria monocytogenes generally infects immunocompromised individuals, such as cancer patients, more frequently and with higher morbidity and mortality than the general population. Because of the anticipated risk associated with L. monocytogenes and other pathogens in produce, immunocompromised individuals are often placed on neutropenic diets that exclude fresh produce, though these risks have not been quantified. Therefore, this study developed a data-driven risk model for listeriosis in cancer patients who consume ready-to-eat (RTE) salads, consisting of leafy greens, cucumbers, and tomatoes, as influenced by kitchen-scale treatments and storage practices. Monte Carlo simulations were used to model the risk of invasive listeriosis during one chemotherapy cycle. Refrigerating all salad components decreased median risk by approximately one-half log. For refrigerated salads with no treatment, the predicted median risk was ≤ 4.3 × 10-08. When salad ingredients were surface blanched with greens rinsed, the predicted risk decreased to 5.4 × 10-10. Predicted risk was lowest (1.4 × 10-13) for a blanched "salad" consisting of solely cucumbers and tomatoes. Interestingly, rinsing, as recommended by FDA only decreased median risk by 1 log. A sensitivity analysis revealed that the highly variable dose-response parameter k strongly influenced risk, indicating that reducing uncertainty in this variable may improve model accuracy. Overall, this study demonstrates that kitchen-scale pathogen reduction approaches have high risk-reduction efficacy and could be considered as an alternative to diets that exclude produce when making risk management decisions.
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18
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Meng J, Tao J, Abu Y, Sussman DA, Girotra M, Franceschi D, Roy S. HIV-Positive Patients on Antiretroviral Therapy Have an Altered Mucosal Intestinal but Not Oral Microbiome. Microbiol Spectr 2023; 11:e0247222. [PMID: 36511710 PMCID: PMC9927552 DOI: 10.1128/spectrum.02472-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 11/27/2022] [Indexed: 12/15/2022] Open
Abstract
This study characterized compositional and functional shifts in the intestinal and oral microbiome in HIV-positive patients on antiretroviral therapy compared to HIV-negative individuals. Seventy-nine specimens were collected from 5 HIV-positive and 12 control subjects from five locations (colon brush, colon wash, terminal ileum [TI] brush, TI wash, and saliva) during colonoscopy and at patient visits. Microbiome composition was characterized using 16S rRNA sequencing, and microbiome function was predicted using bioinformatics tools (PICRUSt and BugBase). Our analysis indicated that the β-diversity of all intestinal samples (colon brush, colon wash, TI brush, and TI wash) from patients with HIV was significantly different from patients without HIV. Specifically, bacteria from genera Prevotella, Fusobacterium, and Megasphaera were more abundant in samples from HIV-positive patients. On the other hand, bacteria from genera Ruminococcus, Blautia, and Clostridium were more abundant in samples from HIV-negative patients. Additionally, HIV-positive patients had higher abundances of biofilm-forming and pathogenic bacteria. Furthermore, pathways related to translation and nucleotide metabolism were elevated in HIV-positive patients, whereas pathways related to lipid and carbohydrate metabolism were positively correlated with samples from HIV-negative patients. Our analyses further showed variations in microbiome composition in HIV-positive and negative patients by sampling site. Samples from colon wash, colon brush, and TI wash were significant between groups, while samples from TI brush and saliva were not significant. Taken together, here, we report altered intestinal microbiome composition and predicted function in patients with HIV compared to uninfected patients, though we found no changes in the oral microbiome. IMPORTANCE Over 37 million people worldwide are living with HIV. Although the availability of antiretroviral therapy has significantly reduced the number of AIDS-related deaths, individuals living with HIV are at increased risk for opportunistic infections. We now know that HIV interacts with the trillions of bacteria, fungi, and viruses in the human body termed the microbiome. Only a limited number of previous studies have compared variations in the oral and gastrointestinal microbiome with HIV infection. Here, we detail how the oral and gastrointestinal microbiome changes with HIV infection, having used 5 different sampling sites to gain a more comprehensive view of these changes by location. Our results show site-specific changes in the intestinal microbiome associated with HIV infection. Additionally, we show that while there were significant changes in the intestinal microbiome, there were no significant changes in the oral microbiome.
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Affiliation(s)
- Jingjing Meng
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA
| | - Junyi Tao
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA
| | - Yaa Abu
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA
| | - Daniel Andrew Sussman
- Department of Gastroenterology, University of Miami Medical Group, Miami, Florida, USA
| | - Mohit Girotra
- Department of Gastroenterology, University of Miami Medical Group, Miami, Florida, USA
| | - Dido Franceschi
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA
| | - Sabita Roy
- Department of Surgery, Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA
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19
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Yamamoto A, Kambara Y, Fujiwara H. Impact of oral microbiota on pathophysiology of GVHD. Front Immunol 2023; 14:1132983. [PMID: 36969182 PMCID: PMC10033631 DOI: 10.3389/fimmu.2023.1132983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 02/23/2023] [Indexed: 03/29/2023] Open
Abstract
Allogeneic transplantation of hematopoietic cells is the only curative therapy for several hematopoietic disease in which patients receive cytotoxic conditioning regimens followed by infusion of hematopoietic stem cells. Although the outcomes have improved over the past decades, graft-versus-host-disease (GVHD), the most common life-threatening complication, remains a major cause of non-relapse morbidity and mortality. Pathophysiology of acute GVHD characterized by host antigen-presenting cells after tissue damage and donor T-cells is well studied, and additionally the importance of recipient microbiota in the intestine is elucidated in the GVHD setting. Oral microbiota is the second most abundant bacterial flora in the body after the intestinal tract, and it is related to chronic inflammation and carcinogenesis. Recently, composition of the oral microbiome in GVHD related to transplantation has been characterized and several common patterns, dysbiosis and enrichment of the specific bacterial groups, have been reported. This review focuses on the role of the oral microbiota in the context of GVHD.
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Affiliation(s)
- Akira Yamamoto
- Department of Hematology and Oncology, Okayama University Hospital, Okayama, Japan
| | - Yui Kambara
- Department of Hematology and Oncology and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hideaki Fujiwara
- Department of Hematology and Oncology, Okayama University Hospital, Okayama, Japan
- *Correspondence: Hideaki Fujiwara,
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Suzuki Y, Kami D, Taya T, Sano A, Ogata T, Matoba S, Gojo S. ZLN005 improves the survival of polymicrobial sepsis by increasing the bacterial killing via inducing lysosomal acidification and biogenesis in phagocytes. Front Immunol 2023; 14:1089905. [PMID: 36820088 PMCID: PMC9938763 DOI: 10.3389/fimmu.2023.1089905] [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: 11/04/2022] [Accepted: 01/23/2023] [Indexed: 02/07/2023] Open
Abstract
Polymicrobial sepsis still has a high mortality rate despite the development of antimicrobial agents, elaborate strategies to protect major organs, and the investment of numerous medical resources. Mitochondrial dysfunction, which acts as the center of energy metabolism, is clearly the basis of pathogenesis. Drugs that act on PGC1α, the master regulator of mitochondrial biosynthesis, have shown useful effects in the treatment of sepsis; therefore, we investigated the efficacy of ZLN005, a PGC1α agonist, and found significant improvement in overall survival in an animal model. The mode of action of this effect was examined, and it was shown that the respiratory capacity of mitochondria was enhanced immediately after administration and that the function of TFEB, a transcriptional regulator that promotes lysosome biosynthesis and mutually enhances PGC1α, was enhanced, as was the physical contact between mitochondria and lysosomes. ZLN005 strongly supported immune defense in early sepsis by increasing lysosome volume and acidity and enhancing cargo degradation, resulting in a significant reduction in bacterial load. ZLN005 rapidly acted on two organelles, mitochondria and lysosomes, against sepsis and interactively linked the two to improve the pathogenesis. This is the first demonstration that acidification of lysosomes by a small molecule is a mechanism of action in the therapeutic strategy for sepsis, which will have a significant impact on future drug discovery.
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Affiliation(s)
- Yosuke Suzuki
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Daisuke Kami
- Department of Regenerative Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Toshihiko Taya
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Arata Sano
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Takehiro Ogata
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Pathology and Cell Regulation, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Satoaki Matoba
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Satoshi Gojo
- Department of Regenerative Medicine, Graduate School of Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
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21
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Sbeit W, Abukaes H, Said Ahmad H, Sbeit M, Kalisky I, Katz L, Mari A, Khoury T. The possible association of proton pump inhibitor use with acute cholangitis in patients with choledocholithiasis: a multi-center study. Scand J Gastroenterol 2023; 58:83-87. [PMID: 35930433 DOI: 10.1080/00365521.2022.2106150] [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: 02/04/2023]
Abstract
BACKGROUND Gallstone disease is common worldwide and can lead to severe complications, including cholangitis; thus, it is important to identify modifiable risk factors for cholangitis. Proton pump inhibitors (PPIs) are commonly prescribed to treat gastroenterological disorders. We aimed to explore whether PPI use is associated with an increased risk of acute cholangitis in patients with gallstone disease. METHODS This retrospective multicenter study included all patients arriving to the hospital over a 10-year period with various presentations of choledocholithiasis. We compared active PPI use in two groups: those with cholangitis (group A) vs. without cholangitis (group B). RESULTS Overall, 811 patients were included, 161 in group A and 650 in group B. The average age ± standard deviation (SD) in groups A and B was 74.5 ± 20.6 vs. 61.6 ± 20.9 years, respectively. PPI use in group A was higher vs. group B (42.9% vs. 29.1%, p = 0.001). On univariate analysis, male gender (OR 1.47, 95% confidence interval (CI) 1.04-2.08), age (OR 1.04, 95% CI 1.03-1.05), ischemic heart disease (IHD) (OR 1.68, 95% CI 1.07-2.64), hyperlipidemia (OR 1.59, 95% CI 1.11-2.29), hypertension (OR 1.81, 95% CI 1.28-2.57) and PPI use (OR 1.83, 95% CI 1.28-2.61), all were associated with acute cholangitis. On multivariate analysis, only PPI use kept its association after adjustment for age (OR 1.64, 95% CI 1.2-3.7). CONCLUSIONS Active PPI use was associated with a higher rate of cholangitis among patients with choledocholithiasis. We advocate considering this risk before prescribing PPIs to patients with gallstones. TRIAL REGISTRATION NUMBER NHR-0263-20 received on 14/01/2021 date 'retrospectively registered'.
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Affiliation(s)
- Wisam Sbeit
- Department of Gastroenterology, Galilee Medical Center, Nahariya, Israel.,Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel
| | - Hani Abukaes
- Department of Gastroenterology, Galilee Medical Center, Nahariya, Israel.,Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel
| | - Helal Said Ahmad
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel.,Gastroenterology and Endoscopy Unit, Nazareth Hospital, EMMS, Nazareth, Israel
| | - Moeen Sbeit
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel
| | - Itai Kalisky
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel.,Institute of Gastroenterology and Hepatology, Hadassah University Medical Center, Jerusalem, Israel
| | - Lior Katz
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel.,Institute of Gastroenterology and Hepatology, Hadassah University Medical Center, Jerusalem, Israel
| | - Amir Mari
- Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel.,Gastroenterology and Endoscopy Unit, Nazareth Hospital, EMMS, Nazareth, Israel
| | - Tawfik Khoury
- Department of Gastroenterology, Galilee Medical Center, Nahariya, Israel.,Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel
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22
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Kunath BJ, Hickl O, Queirós P, Martin-Gallausiaux C, Lebrun LA, Halder R, Laczny CC, Schmidt TSB, Hayward MR, Becher D, Heintz-Buschart A, de Beaufort C, Bork P, May P, Wilmes P. Alterations of oral microbiota and impact on the gut microbiome in type 1 diabetes mellitus revealed by integrated multi-omic analyses. MICROBIOME 2022; 10:243. [PMID: 36578059 PMCID: PMC9795701 DOI: 10.1186/s40168-022-01435-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 10/04/2022] [Indexed: 05/29/2023]
Abstract
BACKGROUND Alterations to the gut microbiome have been linked to multiple chronic diseases. However, the drivers of such changes remain largely unknown. The oral cavity acts as a major route of exposure to exogenous factors including pathogens, and processes therein may affect the communities in the subsequent compartments of the gastrointestinal tract. Here, we perform strain-resolved, integrated meta-genomic, transcriptomic, and proteomic analyses of paired saliva and stool samples collected from 35 individuals from eight families with multiple cases of type 1 diabetes mellitus (T1DM). RESULTS We identified distinct oral microbiota mostly reflecting competition between streptococcal species. More specifically, we found a decreased abundance of the commensal Streptococcus salivarius in the oral cavity of T1DM individuals, which is linked to its apparent competition with the pathobiont Streptococcus mutans. The decrease in S. salivarius in the oral cavity was also associated with its decrease in the gut as well as higher abundances in facultative anaerobes including Enterobacteria. In addition, we found evidence of gut inflammation in T1DM as reflected in the expression profiles of the Enterobacteria as well as in the human gut proteome. Finally, we were able to follow transmitted strain-variants from the oral cavity to the gut at the individual omic levels, highlighting not only the transfer, but also the activity of the transmitted taxa along the gastrointestinal tract. CONCLUSIONS Alterations of the oral microbiome in the context of T1DM impact the microbial communities in the lower gut, in particular through the reduction of "mouth-to-gut" transfer of Streptococcus salivarius. Our results indicate that the observed oral-cavity-driven gut microbiome changes may contribute towards the inflammatory processes involved in T1DM. Through the integration of multi-omic analyses, we resolve strain-variant "mouth-to-gut" transfer in a disease context. Video Abstract.
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Affiliation(s)
- B J Kunath
- Luxembourg Centre for Systems Biomedicine, Esch-sur-Alzette, Luxembourg.
| | - O Hickl
- Luxembourg Centre for Systems Biomedicine, Esch-sur-Alzette, Luxembourg
| | - P Queirós
- Luxembourg Centre for Systems Biomedicine, Esch-sur-Alzette, Luxembourg
| | | | - L A Lebrun
- Luxembourg Centre for Systems Biomedicine, Esch-sur-Alzette, Luxembourg
| | - R Halder
- Luxembourg Centre for Systems Biomedicine, Esch-sur-Alzette, Luxembourg
| | - C C Laczny
- Luxembourg Centre for Systems Biomedicine, Esch-sur-Alzette, Luxembourg
| | - T S B Schmidt
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
| | - M R Hayward
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, 02139, USA
| | - D Becher
- Institute of Microbiology, University of Greifswald, Greifswald, Germany
| | - A Heintz-Buschart
- Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| | - C de Beaufort
- Luxembourg Centre for Systems Biomedicine, Esch-sur-Alzette, Luxembourg
- Clinique Pédiatrique, Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
| | - P Bork
- Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany
- Max Delbrück Centre for Molecular Medicine, Berlin, Germany
- Yonsei Frontier Lab (YFL), Yonsei University, Seoul, 03722, South Korea
- Department of Bioinformatics, Biocenter, University of Würzburg, Würzburg, Germany
| | - P May
- Luxembourg Centre for Systems Biomedicine, Esch-sur-Alzette, Luxembourg
| | - P Wilmes
- Luxembourg Centre for Systems Biomedicine, Esch-sur-Alzette, Luxembourg.
- Department of Life Sciences and Medicine, Faculty of Science, Technology and Medicine, University of Luxembourg, Belvaux, Luxembourg.
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23
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Li XB, Huang XX, Li Q, Li XY, Li JH, Li C, He LJ, Jing HX, Yang KL. Effects of different grains on bacterial diversity and enzyme activity associated with digestion of starch in the foal stomach. BMC Vet Res 2022; 18:407. [PMCID: PMC9670411 DOI: 10.1186/s12917-022-03510-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 11/08/2022] [Indexed: 11/18/2022] Open
Abstract
Abstract
Background
Compared with the stomach of ruminant cattle, the stomach of horse is small and mainly for chemical digestion, but the microorganisms in the stomach play an important role in maintaining the homeostasis of the internal environment. Due to the complexity of the microbes in the stomach, little is known about the diversity and structure of bacteria in the equine stomach. Grains are the main energy source for plant-eating livestock and energy is derived through enzymatic hydrolysis of grains into glucose or their microbial fermentation into Volatile fatty acids (VFA). However, the mechanism through which these ingested grains are chemically digested as well as the effect of these grains on the stomach remains elusive. This study explored the effects of feeding different grains (corn, oats, and barley) on bacterial diversity, structure, and composition in the foal’s stomach content. Furthermore, the effects of different grains on the vitality of starch digestion-related stomach enzymes were investigated.
Results
No significant differences were observed (P > 0.05) in the bacterial rarefaction curves of Operational Taxonomic Units (OTUs) and diversity of the stomach microbiota in all foals. This study also revealed the statistical differences for Firmicutes, Cyanobacteria, Actinobacteria, Fibrobacteres, Lactobacillaceae, Streptococcaceae, Unidentified_Clostridiales, Prevotellaceae, Lactobacillus, Streptococcus, Unidentified_Cyanobacteria, Unidentified_Clostridiales, Lactococcus, Sphingomonas, Lactobacillus_hayakitensis, Lactobacillus_equigenerosi, and Clostridium_perfringens. The linear discriminant analysis effect size analysis revealed 9 bacteria at each classification level. The functional analysis of species information by using FAPROTAX software was able to predict 35 functions, and the top 5 functions were chemoheterotrophy, fermentation, animal_parasites_or_symbionts, nitrate_reduction, and aerobic_chemoheterotrophy. The study also revealed statistical differences for pH, glucose concentration, β-amylase, maltase, and amylase.
Conclusions
The different grains had no significant effect on the microbial diversity of the stomach content of the foal. However, the relative bacterial abundances differed significantly in response to different diets. Particularly, oats fed to the foals significantly increased the relative abundance of Firmicutes, Lactobacillaceae, Lactobacillus, and Lactobacillus_hayakitensis. The grain had no significant effect on the pH of the stomach content, glucose concentration, and enzyme viability in the foal.
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24
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Schwarz J, Schumacher K, Brameyer S, Jung K. Bacterial battle against acidity. FEMS Microbiol Rev 2022; 46:6652135. [PMID: 35906711 DOI: 10.1093/femsre/fuac037] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 07/11/2022] [Accepted: 07/27/2022] [Indexed: 01/09/2023] Open
Abstract
The Earth is home to environments characterized by low pH, including the gastrointestinal tract of vertebrates and large areas of acidic soil. Most bacteria are neutralophiles, but can survive fluctuations in pH. Herein, we review how Escherichia, Salmonella, Helicobacter, Brucella, and other acid-resistant Gram-negative bacteria adapt to acidic environments. We discuss the constitutive and inducible defense mechanisms that promote survival, including proton-consuming or ammonia-producing processes, cellular remodeling affecting membranes and chaperones, and chemotaxis. We provide insights into how Gram-negative bacteria sense environmental acidity using membrane-integrated and cytosolic pH sensors. Finally, we address in more detail the powerful proton-consuming decarboxylase systems by examining the phylogeny of their regulatory components and their collective functionality in a population.
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Affiliation(s)
- Julia Schwarz
- Faculty of Biology, Microbiology, Ludwig-Maximilians-University München, Großhaderner Str. 2-4, 82152 Martinsried, Germany
| | - Kilian Schumacher
- Faculty of Biology, Microbiology, Ludwig-Maximilians-University München, Großhaderner Str. 2-4, 82152 Martinsried, Germany
| | - Sophie Brameyer
- Faculty of Biology, Microbiology, Ludwig-Maximilians-University München, Großhaderner Str. 2-4, 82152 Martinsried, Germany
| | - Kirsten Jung
- Faculty of Biology, Microbiology, Ludwig-Maximilians-University München, Großhaderner Str. 2-4, 82152 Martinsried, Germany
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25
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Bacterial Involvement in Progression and Metastasis of Adenocarcinoma of the Stomach. Cancers (Basel) 2022; 14:cancers14194886. [PMID: 36230809 PMCID: PMC9562638 DOI: 10.3390/cancers14194886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 09/26/2022] [Accepted: 10/03/2022] [Indexed: 12/03/2022] Open
Abstract
Simple Summary Infectious bacteria influence primary gastric carcinogenesis, organotropism, and metastatic progression by altering the microenvironment at the primary and secondary tumors. Key species include Helicobacter pylori (H. pylori) and Mycoplasma hyorhinis (M. hyorhinis). Inflammation caused by H. pylori virulence factors, such as CagA, VacA, and oipA, disrupt epithelial integrity, which allows the primary tumor to progress through the metastatic process. Evidence supports the activation of aquaporin-5 by CagA-positive H. pylori infection, promoting epithelial–mesenchymal transition via the extracellular signal-regulated kinase/mitogen-activated protein kinase (MEK/ERK) pathway, thus laying the foundation for metastatic disease. M. hyorhinis has also been implicated in gastric neoplasia via β-catenin stabilization and subsequent activation of the WNT-signaling pathway, promoting gastric cancer cell motility and inciting cancer progression. Abstract Gastric cancer metastasis is a process in which the tumor microenvironment may carry significant influence. Helicobacter pylori (H. pylori) infection is well-established as a contributor to gastric carcinoma. However, the role that these bacteria and others may play in gastric carcinoma metastasis is a current focus of study. A review of the literature was conducted to elucidate the process by which gastric adenocarcinoma metastasizes, including its ability to utilize both the lymphatic system and the venous system to disseminate. Studies that investigate the tumor microenvironment at both the primary and secondary sites were assessed in detail. H. pylori and Mycoplasma hyorhinis (M. hyorhinis) were found to be important drivers of the pathogenesis of gastric adenocarcinoma by modifying various steps in cell metastasis, including epithelial–mesenchymal transition, cell migration, and cell invasion. H. pylori is also a known driver of MALT lymphoma, which is often reversible simply with the eradication of infection. M. hyorhinis has been implicated in gastric neoplasia via β-catenin stabilization and subsequent activation of the WNT-signaling pathway, promoting gastric cancer cell motility and inciting cancer progression. Fusobacterium nucleatum (F. nucleatum) and its association with worse prognosis in diffuse-type gastric adenocarcinoma are also reviewed. Recognition of the roles that bacteria play within the metastatic cascade is vital in gastrointestinal adenocarcinoma treatment and potential reoccurrence. Further investigation is needed to establish potential treatment for metastatic gastric carcinoma by targeting the tumor microenvironment.
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26
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Gut Microbiota in Nutrition and Health with a Special Focus on Specific Bacterial Clusters. Cells 2022; 11:cells11193091. [PMID: 36231053 PMCID: PMC9563262 DOI: 10.3390/cells11193091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/21/2022] [Accepted: 09/24/2022] [Indexed: 11/25/2022] Open
Abstract
Health is influenced by how the gut microbiome develops as a result of external and internal factors, such as nutrition, the environment, medication use, age, sex, and genetics. Alpha and beta diversity metrics and (enterotype) clustering methods are commonly employed to perform population studies and to analyse the effects of various treatments, yet, with the continuous development of (new) sequencing technologies, and as various omics fields as a result become more accessible for investigation, increasingly sophisticated methodologies are needed and indeed being developed in order to disentangle the complex ways in which the gut microbiome and health are intertwined. Diseases of affluence, such as type 2 diabetes (T2D) and cardiovascular diseases (CVD), are commonly linked to species associated with the Bacteroides enterotype(s) and a decline of various (beneficial) complex microbial trophic networks, which are in turn linked to the aforementioned factors. In this review, we (1) explore the effects that some of the most common internal and external factors have on the gut microbiome composition and how these in turn relate to T2D and CVD, and (2) discuss research opportunities enabled by and the limitations of some of the latest technical developments in the microbiome sector, including the use of artificial intelligence (AI), strain tracking, and peak to trough ratios.
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27
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Freund M, Graus D, Fleischmann A, Gilbert KJ, Lin Q, Renner T, Stigloher C, Albert VA, Hedrich R, Fukushima K. The digestive systems of carnivorous plants. PLANT PHYSIOLOGY 2022; 190:44-59. [PMID: 35604105 PMCID: PMC9434158 DOI: 10.1093/plphys/kiac232] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/08/2022] [Indexed: 05/19/2023]
Abstract
To survive in the nutrient-poor habitats, carnivorous plants capture small organisms comprising complex substances not suitable for immediate reuse. The traps of carnivorous plants, which are analogous to the digestive systems of animals, are equipped with mechanisms for the breakdown and absorption of nutrients. Such capabilities have been acquired convergently over the past tens of millions of years in multiple angiosperm lineages by modifying plant-specific organs including leaves. The epidermis of carnivorous trap leaves bears groups of specialized cells called glands, which acquire substances from their prey via digestion and absorption. The digestive glands of carnivorous plants secrete mucilage, pitcher fluids, acids, and proteins, including digestive enzymes. The same (or morphologically distinct) glands then absorb the released compounds via various membrane transport proteins or endocytosis. Thus, these glands function in a manner similar to animal cells that are physiologically important in the digestive system, such as the parietal cells of the stomach and intestinal epithelial cells. Yet, carnivorous plants are equipped with strategies that deal with or incorporate plant-specific features, such as cell walls, epidermal cuticles, and phytohormones. In this review, we provide a systematic perspective on the digestive and absorptive capacity of convergently evolved carnivorous plants, with an emphasis on the forms and functions of glands.
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Affiliation(s)
| | | | - Andreas Fleischmann
- Botanische Staatssammlung München and GeoBio-Center LMU, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Kadeem J Gilbert
- Department of Plant Biology & W.K. Kellogg Biological Station, Michigan State University, Hickory Corners, Michigan 49060, USA
| | - Qianshi Lin
- Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Tanya Renner
- Department of Entomology, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Christian Stigloher
- Imaging Core Facility of the Biocenter, University of Würzburg, Würzburg, Germany
| | - Victor A Albert
- Department of Biological Sciences, University at Buffalo, Buffalo, New York 14260, USA
| | - Rainer Hedrich
- Institute for Molecular Plant Physiology and Biophysics, University of Würzburg, Würzburg, Germany
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28
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Kitamoto S, Kamada N. Untangling the oral-gut axis in the pathogenesis of intestinal inflammation. Int Immunol 2022; 34:485-490. [PMID: 35716367 DOI: 10.1093/intimm/dxac027] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/16/2022] [Indexed: 11/12/2022] Open
Abstract
An increasing body of literature reveals that host-microbe networks are well-coordinated and impact human health and disease. Recently, it has become evident that an abnormal alteration in bacterial configuration in the oral cavity, namely oral dysbiosis, caused by periodontal inflammation, is associated with various distant inflammatory diseases, including inflammatory bowel disease. However, the extent to which the relationships between oral and distant disorders are merely an association or are causally triggered by oral microorganisms remains debated. In this mini-review, we highlight mechanisms in inter-related organ system diseases , particularly the one between oral and gut inflammation. Further, we discuss clinical perspectives and propose a novel concept of a multi-hit hypothesis in the pathogenesis of gut inflammation, based on our updated knowledge of shared microbiological and immunological pathways between the oral and gut mucosae.
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Affiliation(s)
- Sho Kitamoto
- The World Premier International Research Center (WPI) Immunology Frontier Research Center (IFReC), 1012 IFReC Research Building, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan, 1150 West Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Nobuhiko Kamada
- The World Premier International Research Center (WPI) Immunology Frontier Research Center (IFReC), 1012 IFReC Research Building, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan, 1150 West Medical Center Drive, Ann Arbor, MI 48109, USA
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29
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Son M, Park IS, Kim S, Ma HW, Kim JH, Kim TI, Kim WH, Han J, Kim SW, Cheon JH. Novel Potassium-Competitive Acid Blocker, Tegoprazan, Protects Against Colitis by Improving Gut Barrier Function. Front Immunol 2022; 13:870817. [PMID: 35693794 PMCID: PMC9174989 DOI: 10.3389/fimmu.2022.870817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 04/27/2022] [Indexed: 11/13/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic immune-mediated disorder characterized by prolonged inflammation of the gastrointestinal tract. IBD can result from gut barrier dysfunction, altered gut microbiota, and abnormal intestinal immunity induced by environmental factors in genetically susceptible individuals. Proton pump inhibitors (PPIs) such as rabeprazole are frequently employed for gastric acid inhibition. However, long-term PPI administration can alter the intestinal microbiome composition, possibly worsening IBD severity. The present study revealed that tegoprazan, a potassium-competitive acid blocker, significantly improved colitis in mice and enhanced the intestinal epithelial barrier function. Tegoprazan alleviated gut microbiota dysbiosis and enhanced the growth of Bacteroides vulgatus. In turn, B. vulgatus alleviated intestinal inflammation by inhibiting epithelial adhesion of pathogenic bacteria. Unlike rabeprazole, tegoprazan did not induce gut dysbiosis. Our findings provide novel insights into the potential role of tegoprazan as an intestinal protectant for IBD and as a therapeutic agent for gastric acid-related diseases.
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Affiliation(s)
- Mijeong Son
- Department of Internal Medicine and Institute of Gastroenterology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea
| | - I Seul Park
- Department of Internal Medicine and Institute of Gastroenterology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea
| | - Soochan Kim
- Department of Internal Medicine and Institute of Gastroenterology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyun Woo Ma
- Department of Internal Medicine and Institute of Gastroenterology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea
| | - Ji Hyung Kim
- Department of Internal Medicine and Institute of Gastroenterology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea
| | - Tae Il Kim
- Department of Internal Medicine and Institute of Gastroenterology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea
| | - Won Ho Kim
- Department of Internal Medicine and Institute of Gastroenterology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea
| | - Jaeyong Han
- Department of Internal Medicine, Cha Ilsan Medical Center, CHA University, Goyang, South Korea
| | - Seung Won Kim
- Department of Internal Medicine and Institute of Gastroenterology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Jae Hee Cheon
- Department of Internal Medicine and Institute of Gastroenterology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, South Korea.,Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, South Korea
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30
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Yao H, Li H, Ma Z, Wu Y, Tang Y, Meng H, Yu H, Peng C, Teng Y, Zhang Q, Zhu T, Zhao H, Chu G, Tong Z, Liu L, Lu H, Qi X. Impact of proton pump inhibitors on the in-hospital outcome of COVID-19 patients: a retrospective study. Therap Adv Gastroenterol 2022; 15:17562848221104365. [PMID: 35721837 PMCID: PMC9201367 DOI: 10.1177/17562848221104365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 05/13/2022] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Coronavirus disease 2019 (COVID-19) has triggered a global public health crisis. Proton pump inhibitors (PPIs) are one of the most commonly prescribed drugs. However, the effect of PPIs on the clinical outcomes of COVID-19 patients remains unclear. METHODS All COVID-19 patients admitted to the Wuhan Huoshenshan Hospital from February 2020 to April 2020 were retrospectively collected. Patients were divided into PPIs and non-PPIs groups. Logistic regression analyses were performed to explore the effects of PPIs on the outcomes of COVID-19 patients, including transfer to intensive care unit, mechanical ventilation, and death. Subgroup analyses were performed according to the presence of upper gastrointestinal symptoms potentially associated with acid and the routes, types, median total dosage, and duration of PPIs. Odds ratios (ORs) with 95% confidence intervals (CIs) were calculated. RESULTS Of the 3024 COVID-19 patients included, 694 and 2330 were in PPIs and non-PPIs groups, respectively. Univariate logistic regression analysis showed that PPIs significantly increased the risk of reaching the composite endpoint in COVID-19 patients (OR = 10.23, 95% CI = 6.90-15.16, p < 0.001). After adjusting for age, sex, comorbidities, other medications, and severe/critical COVID-19, PPIs were independently associated with an increased risk of reaching the composite endpoint (OR = 7.00, 95% CI = 4.57-10.71, p < 0.001). This association remained significant in patients with upper gastrointestinal symptoms and those who received an intravenous omeprazole alone, but not those who received oral lansoprazole or rabeprazole alone. It was not influenced by dosage or duration of PPIs. CONCLUSION The use of intravenous PPIs alone during hospitalization may be associated with worse clinical outcome in COVID-19 patients.
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Affiliation(s)
| | | | | | | | - Yufu Tang
- COVID-19 Study Group, General Hospital of
Northern Theater Command, Shenyang, P.R. China,No.7 Department of Infectious Diseases, Wuhan
Huoshenshan Hospital, Wuhan, P.R. China
| | - Hao Meng
- COVID-19 Study Group, General Hospital of
Northern Theater Command, Shenyang, P.R. China,No.7 Department of Infectious Diseases, Wuhan
Huoshenshan Hospital, Wuhan, P.R. China
| | - Hao Yu
- COVID-19 Study Group, General Hospital of
Northern Theater Command, Shenyang, P.R. China,No.7 Department of Infectious Diseases, Wuhan
Huoshenshan Hospital, Wuhan, P.R. China
| | - Chengfei Peng
- COVID-19 Study Group, General Hospital of
Northern Theater Command, Shenyang, P.R. China,No.7 Department of Infectious Diseases, Wuhan
Huoshenshan Hospital, Wuhan, P.R. China
| | - Yue Teng
- COVID-19 Study Group, General Hospital of
Northern Theater Command, Shenyang, P.R. China,No.7 Department of Infectious Diseases, Wuhan
Huoshenshan Hospital, Wuhan, P.R. China
| | - Quanyu Zhang
- COVID-19 Study Group, General Hospital of
Northern Theater Command, Shenyang, P.R. China,No.7 Department of Infectious Diseases, Wuhan
Huoshenshan Hospital, Wuhan, P.R. China
| | - Tianyi Zhu
- COVID-19 Study Group, General Hospital of
Northern Theater Command, Shenyang, P.R. China,Department of Respiratory Medicine, General
Hospital of Northern Theater Command, Shenyang, P.R. China,No.7 Department of Infectious Diseases, Wuhan
Huoshenshan Hospital, Wuhan, P.R. China
| | - Haitao Zhao
- COVID-19 Study Group, General Hospital of
Northern Theater Command, Shenyang, P.R. China,Department of Respiratory Medicine, General
Hospital of Northern Theater Command, Shenyang, P.R. China,Section of Medical Service, General Hospital
of Northern Theater Command, Shenyang, P.R. China
| | - Guiyang Chu
- COVID-19 Study Group, General Hospital of
Northern Theater Command, Shenyang, P.R. China,Information Section of Medical Security
Center, General Hospital of Northern Theater Command, Shenyang, P.R.
China
| | - Zhenhua Tong
- COVID-19 Study Group, General Hospital of
Northern Theater Command, Shenyang, P.R. China,Section of Medical Service, General Hospital
of Northern Theater Command, Shenyang, P.R. China
| | - Lu Liu
- COVID-19 Study Group, General Hospital of
Northern Theater Command, No. 83 Wenhua Road, Shenyang, Liaoning Province
110840, P.R. China,Section of Medical Service, General Hospital
of Northern Theater Command, Shenyang 110840, P.R. China
| | - Hui Lu
- COVID-19 Study Group, General Hospital of
Northern Theater Command, No. 83 Wenhua Road, Shenyang, Liaoning Province
110840, P.R. China
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31
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Kitamoto S, Kamada N. Periodontal connection with intestinal inflammation: Microbiological and immunological mechanisms. Periodontol 2000 2022; 89:142-153. [PMID: 35244953 PMCID: PMC9018512 DOI: 10.1111/prd.12424] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Humans have coevolved with the trillions of resident microbes that populate every nook and cranny of the body. At each site, the resident microbiota creates a unique ecosystem specialized to its environment, benefiting the development and maintenance of human physiology through harmonious symbiotic relationships with the host. However, when the resident microbiota is perturbed, significant complications may arise with disastrous consequences that affect the local and distant ecosystems. In this context, periodontal disease results in inflammation beyond the oral cavity, such as in the gastrointestinal tract. Accumulating evidence indicates that potentially harmful oral resident bacteria (referred to as pathobionts) and pathogenic immune cells in the oral mucosa can migrate to the lower gastrointestinal tract and contribute to intestinal inflammation. We will review the most recent advances concerning the periodontal connection with intestinal inflammation from microbiological and immunological perspectives. Potential therapeutic approaches that target the connection between the mouth and the gut to treat gastrointestinal diseases, such as inflammatory bowel disease, will be examined. Deciphering the complex interplay between microbes and immunity along the mouth-gut axis will provide a better understanding of the pathogenesis of both oral and gut pathologies and present therapeutic opportunities.
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Affiliation(s)
- Sho Kitamoto
- Division of Gastroenterology and HepatologyDepartment of Internal MedicineUniversity of MichiganAnn ArborMichiganUSA
| | - Nobuhiko Kamada
- Division of Gastroenterology and HepatologyDepartment of Internal MedicineUniversity of MichiganAnn ArborMichiganUSA
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32
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Jin X, Wei C, Wu C, Zhang W. Gastroretentive core–shell hydrogel assembly for sustained release of metformin hydrochloride. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111155] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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33
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Franklin S, Aitken SL, Shi Y, Sahasrabhojane PV, Robinson S, Peterson CB, Daver N, Ajami NA, Kontoyiannis DP, Shelburne SA, Galloway-Peña J. Oral and Stool Microbiome Coalescence and Its Association With Antibiotic Exposure in Acute Leukemia Patients. Front Cell Infect Microbiol 2022; 12:848580. [PMID: 35433514 PMCID: PMC9010033 DOI: 10.3389/fcimb.2022.848580] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/08/2022] [Indexed: 11/16/2022] Open
Abstract
Failure to maintain segregation of oral and gut microbial communities has been linked to several diseases. We sought to characterize oral-fecal microbiome community coalescence, ectopic extension of oral bacteria, clinical variables contributing to this phenomenon, and associated infectious consequences by analyzing the 16S rRNA V4 sequences of longitudinal fecal (n=551) and oral (n=737) samples from 97 patients with acute myeloid leukemia (AML) receiving induction chemotherapy (IC). Clustering observed in permutation based multivariate analysis of variance (PERMANOVA) of Bray-Curtis dissimilarity and PCoA plot of UniFrac distances between intra-patient longitudinal oral-stool sample pairs suggested potential oral-stool microbial community coalescence. Bray-Curtis dissimilarities and UniFrac distances were used to create an objective definition of microbial community coalescence. We determined that only 23 of the 92 patients exhibited oral-stool community coalescence. This was validated through a linear mixed model which determined that patients who experienced coalescence had an increased proportion of shared to unique OTUs between their oral-stool sample pairs over time compared to non-coalesced patients. Evaluation of longitudinal microbial characteristics revealed that patients who experienced coalescence had increased stool abundance of Streptococcus and Stenotrophomonas compared to non-coalesced patients. When treated as a time-varying covariate, each additional day of linezolid (HR 1.15, 95% CI 1.06 – 1.24, P <0.001), meropenem (HR 1.13, 95% CI 1.05 – 1.21, P = 0.001), metronidazole (HR 1.13, 95% CI 1.05 – 1.21, P = 0.001), and cefepime (HR 1.10, 95% CI 1.01 – 1.18, P = 0.021) increased the hazard of oral-stool microbial community coalescence. Levofloxacin receipt was associated with a lower risk of microbiome community coalescence (HR 0.75, 95% CI 0.61 – 0.93, P = 0.009). By the time of neutrophil recovery, the relative abundance of Bacteroidia (P<0.001), Fusobacteria (P=0.012), and Clostridia (P=0.013) in the stool were significantly lower in patients with oral-gut community coalescence. Exhibiting oral-stool community coalescence was associated with the occurrence of infections prior to neutrophil recovery (P=0.002), as well as infections during the 90 days post neutrophil recovery (P=0.027). This work elucidates specific antimicrobial effects on microbial ecology and furthers the understanding of oral/intestinal microbial biogeography and its implications for adverse clinical outcomes.
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Affiliation(s)
- Samantha Franklin
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX, United States
- Interdisciplinary Graduate Program in Genetics and Genomics, Texas A&M University, College Station, TX, United States
| | - Samuel L. Aitken
- Department of Pharmacy, Michigan Medicine, Ann Arbor, MI, United States
| | - Yushi Shi
- Department of Statistics and Center for Biomedical Informatics, University of Missouri, Columbia, MO, United States
| | - Pranoti V. Sahasrabhojane
- Department of Infectious Disease, Infection Control and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Sarah Robinson
- Department of Statistics, Rice University, Houston, TX, United States
| | - Christine B. Peterson
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Naval Daver
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Nadim A. Ajami
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Dimitrios P. Kontoyiannis
- Department of Infectious Disease, Infection Control and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Samuel A. Shelburne
- Department of Infectious Disease, Infection Control and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jessica Galloway-Peña
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX, United States
- Interdisciplinary Graduate Program in Genetics and Genomics, Texas A&M University, College Station, TX, United States
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- *Correspondence: Jessica Galloway-Peña,
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34
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Impact of tissue processing on microbiological colonization in the context of placentophagy. Sci Rep 2022; 12:5307. [PMID: 35351937 PMCID: PMC8964728 DOI: 10.1038/s41598-022-09243-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 03/14/2022] [Indexed: 11/08/2022] Open
Abstract
A mother’s postpartum ingestion of raw or processed placental tissue—referred to as human maternal placentophagy—is an emerging health trend observed in industrialized nations. Placenta is commonly consumed as small pieces of raw tissue, or as raw or steamed dehydrated pulverized and encapsulated tissue. To investigate the potential neonatal health risks of this behavior, the present study focused on microbial colonization of processed placenta preparations with potentially pathogenic bacteria Streptococcus agalactiae (Group-B-Streptococci; GBS) and Escherichia coli (E. coli). In the clinical approach placentas from 24 mothers were analyzed. Two placentas, from 13 mothers with confirmed positive maternal GBS status, showed GBS-growth on their surface (2/13; 15.4%) independent from delivery mode or antibiotic treatment. All processed samples (n = 24) were free from GBS. In the experimental approach, a standardized inoculation protocol was introduced to resemble ascending vaginal and hematogenous colonization. Six placentas from elective term C-sections of GBS negative mothers were collected and artificially inoculated with highly concentrated suspensions of GBS and E. coli. Heat processing significantly reduced the number of colony forming units (CFU) for GBS and E. coli. Our results suggest placentophagy of processed tissue is an unlikely source of clinical infection.
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35
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Magold AI, Swartz MA. Pathogenic Exploitation of Lymphatic Vessels. Cells 2022; 11:979. [PMID: 35326430 PMCID: PMC8946894 DOI: 10.3390/cells11060979] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 03/07/2022] [Accepted: 03/09/2022] [Indexed: 02/06/2023] Open
Abstract
Lymphatic vessels provide a critical line of communication between peripheral tissues and their draining lymph nodes, which is necessary for robust immune responses against infectious agents. At the same time, lymphatics help shape the nature and kinetics of immune responses to ensure resolution, limit tissue damage, and prevent autoimmune responses. A variety of pathogens have developed strategies to exploit these functions, from multicellular organisms like nematodes to bacteria, viruses, and prions. While lymphatic vessels serve as transport routes for the dissemination of many pathogens, their hypoxic and immune-suppressive environments can provide survival niches for others. Lymphatics can be exploited as perineural niches, for inter-organ distribution among highly motile carrier cells, as effective replicative niches, and as alternative routes in response to therapy. Recent studies have broadened our understanding of lymphatic involvement in pathogenic spread to include a wider range of pathogens, as well as new mechanisms of exploitation, which we summarize here.
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Affiliation(s)
- Alexandra I. Magold
- Pritzker School for Molecular Engineering, University of Chicago, Chicago, IL 60637, USA;
| | - Melody A. Swartz
- Pritzker School for Molecular Engineering, University of Chicago, Chicago, IL 60637, USA;
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL 60637, USA
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36
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Pussinen PJ, Kopra E, Pietiäinen M, Lehto M, Zaric S, Paju S, Salminen A. Periodontitis and cardiometabolic disorders: The role of lipopolysaccharide and endotoxemia. Periodontol 2000 2022; 89:19-40. [PMID: 35244966 PMCID: PMC9314839 DOI: 10.1111/prd.12433] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Lipopolysaccharide is a virulence factor of gram-negative bacteria with a crucial importance to the bacterial surface integrity. From the host's perspective, lipopolysaccharide plays a role in both local and systemic inflammation, activates both innate and adaptive immunity, and can trigger inflammation either directly (as a microbe-associated molecular pattern) or indirectly (by inducing the generation of nonmicrobial, danger-associated molecular patterns). Translocation of lipopolysaccharide into the circulation causes endotoxemia, which is typically measured as the biological activity of lipopolysaccharide to induce coagulation of an aqueous extract of blood cells of the assay. Apparently healthy subjects have a low circulating lipopolysaccharide activity, since it is neutralized and cleared rapidly. However, chronic endotoxemia is involved in the pathogenesis of many inflammation-driven conditions, especially cardiometabolic disorders. These include atherosclerotic cardiovascular diseases, obesity, liver diseases, diabetes, and metabolic syndrome, where endotoxemia has been recognized as a risk factor. The main source of endotoxemia is thought to be the gut microbiota. However, the oral dysbiosis in periodontitis, which is typically enriched with gram-negative bacterial species, may also contribute to endotoxemia. As endotoxemia is associated with an increased risk of cardiometabolic disorders, lipopolysaccharide could be considered as a molecular link between periodontal microbiota and cardiometabolic diseases.
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Affiliation(s)
- Pirkko J Pussinen
- Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Elisa Kopra
- Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Milla Pietiäinen
- Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Markku Lehto
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, Helsinki, Finland.,Abdominal Center, Nephrology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Clinical and Molecular Metabolism, Faculty of Medicine Research Programs, University of Helsinki, Helsinki, Finland
| | - Svetislav Zaric
- Faculty of Dentistry, Oral & Craniofacial Sciences, Kings College London, London, UK
| | - Susanna Paju
- Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Aino Salminen
- Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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37
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Fan Y, Yao Q, Liu Y, Jia T, Zhang J, Jiang E. Underlying Causes and Co-existence of Malnutrition and Infections: An Exceedingly Common Death Risk in Cancer. Front Nutr 2022; 9:814095. [PMID: 35284454 PMCID: PMC8906403 DOI: 10.3389/fnut.2022.814095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/24/2022] [Indexed: 12/16/2022] Open
Abstract
In nutrition science, malnutrition is a state of imbalance between intake and the needs of the organism, leading to metabolic changes, impaired physiological functions, and weight loss. Regardless of the countless efforts being taken and researched for years, the burden of malnutrition is still alarming and considered a significant agent of mortality across the globe. Around 45% of 12 million children deaths (0–5 years old) annually are due to malnutrition, mostly from developing countries. Malnutrition develops associations with other infections and leads to substantial clinical outcomes, such as mortality, more visits to hospitals, poor quality of life and physical frailty, and socioeconomic issues. Here, in this review, we intend to provide an overview of the current burden, underlying risk factors, and co-existence of malnutrition and other infections, such as cancer. Following the rising concern of the vicious interplay of malnutrition and other medical illnesses, we believed that this narrative review would highlight the need to re-make and re-define the future strategies by giving comprehensive and sustainable programs to alleviate poverty and combat the rampant infectious diseases and those nutrition-related health problems. Furthermore, the study also raises the concern for hospitalized malnourished cancer patients as it is crucially important to knowledge the caregiver healthcare staff for early interventions of providing nutritional support to delay or prevent the onset of malnutrition.
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Affiliation(s)
- Yuanyuan Fan
- School of Life Sciences, Henan University, Kaifeng, China
| | - Qianqian Yao
- Institute of Nursing and Health, Henan University, Kaifeng, China
| | - Yufeng Liu
- Institute of Nursing and Health, Henan University, Kaifeng, China
| | - Tiantian Jia
- Institute of Nursing and Health, Henan University, Kaifeng, China
- DeDepartment of Orthopedics, Henan Provincial People's Hospital, Zhengzhou, China
| | - Junjuan Zhang
- DeDepartment of Orthopedics, Henan Provincial People's Hospital, Zhengzhou, China
- Junjuan Zhang
| | - Enshe Jiang
- Institute of Nursing and Health, Henan University, Kaifeng, China
- Henan International Joint Laboratory for Nuclear Protein Regulation, Henan University, Kaifeng, China
- *Correspondence: Enshe Jiang
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38
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Huang C, Chu C, Peng Y, Zhang N, Yang Z, You J, Wei F. Correlations between gastrointestinal and oral microbiota in children with cerebral palsy and epilepsy. Front Pediatr 2022; 10:988601. [PMID: 36440329 PMCID: PMC9686843 DOI: 10.3389/fped.2022.988601] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 10/07/2022] [Indexed: 11/06/2022] Open
Abstract
We here studied the correlation between gut and oral microbiota in children with cerebral palsy and Epilepsy (CPE). We enrolled 27 children with this condition from the social welfare center of Longgang District, collected their oral plaque and stool samples, and analyzed their gut microbiota (GM) and oral microbiota (OM) through 16S rRNA gene sequencing. Taxonomical annotation revealed that the levels of Firmicutes and Bacteroides in the oral cavity were significantly lower in CPE children than in healthy children, whereas the abundance of Actinomycetes increased significantly in CPE children. In addition, Prevotella, Fusobacterium, and Neisseria were the top three abundant genera, representing 15.49%, 9.34%, and 7.68% of the OM and suggesting potential correlations with caries, periodontitis, and malnutrition. For the GM, Bifidobacterium, Bacteroides, and Prevotella were the top three abundant genera in CPE children and probably contributed to the development of chronic inflammation and malnutrition. Furthermore, the OM and GM correlated with each other closely, and the bacterial components of these microbiota in CPE children were remarkably different from those in healthy children, such as Bifidobacterium, Fusobacterium, Bacteroides, and Neisseria. Conclusively, dysbiotic OM can translocate to the intestinal tract and induce GM dysbiosis, suggesting the consistency between OM and GM variations. Altered oral and gut microbial structures have potential impacts on the occurrence of clinical diseases such as periodontitis, caries, and malnutrition.
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Affiliation(s)
- Congfu Huang
- Department of Pediatrics, Longgang District Maternity & Child Healthcare Hospital, Shenzhen, China
| | | | - Yuanping Peng
- The Outpatient Department, Longgang District Social Welfare Center, Shenzhen, China
| | - Nong Zhang
- Department of Pediatrics, Longgang District Maternity & Child Healthcare Hospital, Shenzhen, China
| | - Zhenyu Yang
- School of Statistics and Data Science, NanKai University, Tianjin, China
| | - Jia You
- Shenzhen Middle School, Shenzhen, China
| | - Fengxiang Wei
- Department of Pediatrics, Longgang District Maternity & Child Healthcare Hospital, Shenzhen, China
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39
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Kim HB, Kim JH, Wolf BJ. Acid suppressant use in association with incidence and severe outcomes of COVID-19: a systematic review and meta-analysis. Eur J Clin Pharmacol 2021; 78:383-391. [PMID: 34817624 PMCID: PMC8611395 DOI: 10.1007/s00228-021-03255-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 11/15/2021] [Indexed: 02/06/2023]
Abstract
PURPOSE Several observational studies have presented conflicting results on the association between the use of proton pump inhibitors (PPIs) or histamine H2 receptor antagonist (H2RA) and the risk of coronavirus disease 2019 (COVID-19). This systematic review and meta-analysis aimed to examine this association. METHODS In July 2021, PubMed, Embase, Cochrane Central Register of Controlled Trials, and Web of Science were searched for articles investigating the relationship between the two main acid suppressants and COVID-19. Studies showing the effect estimates as hazard ratio (HR) for severe outcomes or incidence of COVID-19 were evaluated using a random-effects model. RESULTS A total of 15 retrospective cohort studies with 18,109 COVID-19 cases were included in the current meta-analysis. PPI use was significantly associated with severe outcomes of COVID-19 (hazard ratio [HR] = 1.53; 95% confidence interval [CI]: 1.20-1.95) but not with the incidence of COVID-19, whereas H2RA use was significantly associated with decreased incidence (HR = 0.86, 95% CI: 0.76-0.97). For subgroup analyses of PPIs, increased severe outcomes of COVID-19 were observed in < 60 years, active use, in-hospital use, and Asians. For subgroup analyses of H2RAs, decreased severe outcomes of COVID-19 were observed in > 60 years, while in-hospital use and use in Asia were associated with higher disease severity. CONCLUSIONS Close observation can be considered for COVID-19 patients who use PPIs to prevent severe outcomes. However, caution should be taken because of substantial heterogeneity and plausible protopathic bias.
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Affiliation(s)
- Hong-Bae Kim
- Department of Family Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - Jung-Ha Kim
- Department of Family Medicine, Chung-Ang University Medical Center, Chung-Ang University College of Medicine, Seoul, Republic of Korea.
| | - Bethany J Wolf
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, USA
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40
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Waldum H, Martinsen TC. Chronic diseases: what about infections of virus and prions via the gut? Therap Adv Gastroenterol 2021; 14:17562848211028805. [PMID: 34603505 PMCID: PMC8481751 DOI: 10.1177/17562848211028805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
| | - Tom Christian Martinsen
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway,St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
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41
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Obasi DC, Ogugua VN. GC-MS analysis, pH and antioxidant effect of Ruzu herbal bitters on alloxan-induced diabetic rats. Biochem Biophys Rep 2021; 27:101057. [PMID: 34179519 PMCID: PMC8214189 DOI: 10.1016/j.bbrep.2021.101057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 06/07/2021] [Accepted: 06/10/2021] [Indexed: 12/19/2022] Open
Abstract
The study investigated the antioxidant effect of Ruzu herbal bitters (RHB) on alloxan-induced diabetic rats, the pH and the bioactive components of RHB using gas chromatography and mass spectroscopy (GC-MS). Fifty-four adult albino rats were divided into nine groups of six rats each. Group 1 was the normal control. Groups 2-6 were diabetic. Group 2 was untreated positive control, while groups 3-6 were respectively treated with 5 mg/kg b. w of glibenclamide, 0.14, 0.29 and 0.57 ml/kg b. w of RHB for 21 days. Groups 7-9 were not diabetic but treated as in groups 4-6 respectively. The results showed significant (p < 0.05) increase in the blood glucose level and significant (p < 0.05) decrease in weight in diabetic untreated group compared to the normal control. The oxidative stress parameters showed significant (p < 0.05) increases in the serum activities of superoxide dismutase (SOD) and catalase (CAT), with significant (p < 0.05) decrease in glutathione peroxidase (GPx); while there were significant (p < 0.05) increases in the levels of vitamin C (VIT C), vitamin E (VIT E), C-reactive protein (CRP) and malondialdehyde (MDA), with significant (p < 0.05) decrease in the level of glutathione (GSH) in the diabetic untreated group compared to the normal control group. However, treatment of the diabetic groups with different doses of RHB resulted in the reversal of the effects to near-normal levels in a dose-dependent manner. The pH of RHB was found to be 3.45. The GC-MS result of RHB revealed the presence of 10 bioactive compounds, out of which four are pharmacologically important antioxidants: 11-Octadecenioc acid -Methyl esther, 2,7-Dioxatricyclodeca-4, 9-diene, Cis-Z-α- Bisabolene epoxide, and Tetradecanoic acid (lauric acid). Thus, the study revealed that Ruzu herbal bitters possesses antidiabetic and antioxidant activities due to the bioactive antioxidant compounds it contains.
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Affiliation(s)
- David C. Obasi
- Department of Biochemistry, Evangel University, Akaeze, Ebonyi State, Nigeria
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42
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Maksimaityte V, Bausys A, Kryzauskas M, Luksta M, Stundiene I, Bickaite K, Bausys B, Poskus T, Bausys R, Strupas K. Gastrectomy impact on the gut microbiome in patients with gastric cancer: A comprehensive review. World J Gastrointest Surg 2021; 13:678-688. [PMID: 34354801 PMCID: PMC8316847 DOI: 10.4240/wjgs.v13.i7.678] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/19/2021] [Accepted: 05/25/2021] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer is one of the most common malignancies worldwide and gastrectomy remains the only potentially curative treatment option for this disease. However, the surgery leads to significant physiological and anatomical changes in the gastrointestinal (GI) tract including loss of the gastric barrier, an increase in oxygenation levels in the distal gut, and biliary diversion after gastrectomy. These changes in the GI tract influence the composition of the gut microbiome and thus, host health. Gastrectomy-induced dysbiosis is characterized by increased abundance of typical oral cavity bacteria, an increase in aero-tolerant bacteria (aerobes/facultative anaerobes), and increased abundance of bile acid-transforming bacteria. Furthermore, this dysbiosis is linked to intestinal inflammation, small intestinal bacterial overgrowth, various GI symptoms, and an increased risk of colorectal cancer.
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Affiliation(s)
- Vaidota Maksimaityte
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania
| | - Augustinas Bausys
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania
- Department of Abdominal Surgery and Oncology, National Cancer Institute, Vilnius 08660, Lithuania
| | - Marius Kryzauskas
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania
| | - Martynas Luksta
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania
| | - Ieva Stundiene
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania
| | | | - Bernardas Bausys
- Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania
| | - Tomas Poskus
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania
| | - Rimantas Bausys
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania
- Department of Abdominal Surgery and Oncology, National Cancer Institute, Vilnius 08660, Lithuania
| | - Kestutis Strupas
- Clinic of Gastroenterology, Nephrourology, and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius 03101, Lithuania
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43
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Zou X, Ouyang H, Pang D, Han R, Tang X. Pathological alterations in the gastrointestinal tract of a porcine model of DMD. Cell Biosci 2021; 11:131. [PMID: 34266495 PMCID: PMC8281460 DOI: 10.1186/s13578-021-00647-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 07/05/2021] [Indexed: 11/23/2022] Open
Abstract
Background Patients with Duchenne muscular dystrophy (DMD) develop severe skeletal and cardiac muscle pathologies, which result in premature death. Therefore, the current therapeutic efforts are mainly targeted to correct dystrophin expression in skeletal muscle and heart. However, it was reported that DMD patients may also exhibit gastrointestinal and nutritional problems. How the pathological alterations in gastrointestinal tissues contribute to the disease are not fully explored. Results Here we employed the CRISPR/Cas9 system combined with somatic nuclear transfer technology (SCNT) to establish a porcine model of DMD and explored their pathological alterations. We found that genetic disruption of dystrophin expression led to morphological gastrointestinal tract alterations, weakened the gastrointestinal tract digestion and absorption capacity, and eventually led to malnutrition and gastric dysfunction in the DMD pigs. Conclusions This work provides important insights into the pathogenesis of DMD and highlights the need to consider the gastrointestinal dysfunction as an additional therapeutic target for DMD patients. Supplementary Information The online version contains supplementary material available at 10.1186/s13578-021-00647-9.
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Affiliation(s)
- Xiaodong Zou
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
| | - Hongsheng Ouyang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
| | - Daxin Pang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China
| | - Renzhi Han
- Department of Surgery, Davis Heart and Lung Research Institute, Biomedical Sciences Graduate Program, Biophysics Graduate Program, The Ohio State University Wexner Medical Center, Columbus, OH, 43210, USA.
| | - Xiaochun Tang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun, Jilin, People's Republic of China.
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Famotidine and Hospitalized COVID-19 Patients: Are the Benefits True? Am J Gastroenterol 2021; 116:1561. [PMID: 34183586 DOI: 10.14309/ajg.0000000000001217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Walker GT, Yang G, Tsai JY, Rodriguez JL, English BC, Faber F, Souvannaseng L, Butler BP, Tsolis RM. Malaria parasite infection compromises colonization resistance to an enteric pathogen by reducing gastric acidity. SCIENCE ADVANCES 2021; 7:eabd6232. [PMID: 34193410 PMCID: PMC8245046 DOI: 10.1126/sciadv.abd6232] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 05/17/2021] [Indexed: 05/05/2023]
Abstract
Malaria parasite infection weakens colonization resistance against Salmonella enterica serovar (S.) Typhimurium. S. Typhimurium is a member of the Enterobacterales, a taxon that increases in abundance when the colonic microbiota is disrupted or when the colonic mucosa is inflamed. However, here, we show that infection of mice with Plasmodium yoelii enhances S. Typhimurium colonization by weakening host control in the upper GI tract. P. yoelii-infected mice had elevated gastric pH. Stimulation of gastric acid secretion during P. yoelii infection restored stomach acidity and colonization resistance, demonstrating that parasite-induced hypochlorhydria increases gastric survival of S. Typhimurium. Furthermore, blockade of P. yoelii-induced TNF-α signaling was sufficient to prevent elevation of gastric pH and enhance S. Typhimurium colonization during concurrent infection. Collectively, these data suggest that abundance in the fecal microbiota of facultative anaerobes, such as S. Typhimurium, can be increased by suppressing antibacterial defenses in the upper GI tract, such as gastric acid.
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Affiliation(s)
- Gregory T Walker
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA
| | - Guiyan Yang
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Julia Y Tsai
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA
- School of Veterinary Medicine, University of California Davis, Davis, CA, USA
| | - Jorge L Rodriguez
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA
| | - Bevin C English
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA
| | - Franziska Faber
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA
- Institute for Molecular Infection Biology (IMIB), Faculty of Medicine, University of Würzburg, D-97080 Würzburg, Germany
| | - Lattha Souvannaseng
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA
- Mouse Biology Program, University of California Davis, Davis, CA, USA
- Department of Pathobiology, School of Veterinary Medicine, St. George's University, Grenada, West Indies
| | - Brian P Butler
- Department of Pathobiology, School of Veterinary Medicine, St. George's University, Grenada, West Indies
| | - Renée M Tsolis
- Department of Medical Microbiology and Immunology, School of Medicine, University of California Davis, Davis, CA, USA.
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Park SY, Hwang BO, Lim M, Ok SH, Lee SK, Chun KS, Park KK, Hu Y, Chung WY, Song NY. Oral-Gut Microbiome Axis in Gastrointestinal Disease and Cancer. Cancers (Basel) 2021; 13:2124. [PMID: 33924899 PMCID: PMC8125773 DOI: 10.3390/cancers13092124] [Citation(s) in RCA: 84] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/05/2021] [Accepted: 03/09/2021] [Indexed: 02/07/2023] Open
Abstract
It is well-known that microbiota dysbiosis is closely associated with numerous diseases in the human body. The oral cavity and gut are the two largest microbial habitats, playing a major role in microbiome-associated diseases. Even though the oral cavity and gut are continuous regions connected through the gastrointestinal tract, the oral and gut microbiome profiles are well-segregated due to the oral-gut barrier. However, the oral microbiota can translocate to the intestinal mucosa in conditions of the oral-gut barrier dysfunction. Inversely, the gut-to-oral microbial transmission occurs as well in inter- and intrapersonal manners. Recently, it has been reported that oral and gut microbiomes interdependently regulate physiological functions and pathological processes. Oral-to-gut and gut-to-oral microbial transmissions can shape and/or reshape the microbial ecosystem in both habitats, eventually modulating pathogenesis of disease. However, the oral-gut microbial interaction in pathogenesis has been underappreciated to date. Here, we will highlight the oral-gut microbiome crosstalk and its implications in the pathogenesis of the gastrointestinal disease and cancer. Better understanding the role of the oral-gut microbiome axis in pathogenesis will be advantageous for precise diagnosis/prognosis and effective treatment.
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Affiliation(s)
- Se-Young Park
- Department of Applied Life Science, The Graduate School, Yonsei University, and BK21 FOUR Project, Yonsei University College of Dentistry, Seoul 03722, Korea; (S.-Y.P.); (B.-O.H.); (S.-H.O.)
| | - Byeong-Oh Hwang
- Department of Applied Life Science, The Graduate School, Yonsei University, and BK21 FOUR Project, Yonsei University College of Dentistry, Seoul 03722, Korea; (S.-Y.P.); (B.-O.H.); (S.-H.O.)
| | - Mihwa Lim
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Korea; (M.L.); (S.-K.L.); (K.-K.P.)
| | - Seung-Ho Ok
- Department of Applied Life Science, The Graduate School, Yonsei University, and BK21 FOUR Project, Yonsei University College of Dentistry, Seoul 03722, Korea; (S.-Y.P.); (B.-O.H.); (S.-H.O.)
| | - Sun-Kyoung Lee
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Korea; (M.L.); (S.-K.L.); (K.-K.P.)
| | - Kyung-Soo Chun
- College of Pharmacy, Keimyung University, Daegu 42601, Korea;
| | - Kwang-Kyun Park
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Korea; (M.L.); (S.-K.L.); (K.-K.P.)
| | - Yinling Hu
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA;
| | - Won-Yoon Chung
- Department of Oral Biology, Oral Cancer Research Institute, and BK21 FOUR Project, Yonsei University College of Dentistry, Seoul 03722, Korea;
| | - Na-Young Song
- Department of Oral Biology, Yonsei University College of Dentistry, Seoul 03722, Korea; (M.L.); (S.-K.L.); (K.-K.P.)
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Shaikh BA, Shaikh ZA, Shah AH, Kumar A. Determining the Risk of Spontaneous Bacterial Peritonitis due to increase use of Proton Pump Inhibitors among cirrhotic patients with ascites. Pak J Med Sci 2021; 37:1075-1079. [PMID: 34290786 PMCID: PMC8281193 DOI: 10.12669/pjms.37.4.3476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/12/2020] [Accepted: 03/25/2021] [Indexed: 12/19/2022] Open
Abstract
Objectives The current study aimed to determine the Spontaneous Bacterial Peritonitis (SBP) risk due to increased use of Proton Pump Inhibitors (PPIs) among cirrhotic patients with ascites. Methods This retrospective case-control study was conducted at Chandka Medical College & Hospital, Larkana from March 2013 to February 2014, involving 215 cirrhotic patients with ascites. Paracentesis was performed to distinguish cirrhotic patients with SBP and Polymorphonuclear Neutrophil (PMN) count ≥ 250 neutrophils/mm3 (cases) and non-SBP with PMN count < 250 neutrophils/mm3 (controls). The demographic details, history of PPIs use before admission and duration of Chronic Liver Disease (CLD) were inquired and statistical analysis was carried through SPSS Version 23.0. Results Increased pre-hospital PPI intake was observed among cirrhotic patients with SBP (69.8%) as compared to those without SBP (48.8%; p = 0.014). The mean duration of PPI use was 19.16 ± 4.772 days, and it was more significant among older cirrhotic patients (p < 0.05). Increased duration of CLD was observed among PPI users, i.e. 20.47 ± 6.305 months vs. 18.95 ± 5.527 months among non-PPI users (p < 0.05). Conclusions Our results show that cirrhotic patients with ascites consuming PPIs are more likely to develop SBP as compared to non-PPI users.
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Affiliation(s)
- Bashir Ahmed Shaikh
- Bashir Ahmed Shaikh, FCPS, FRCP. Chandka Medical College Hospital, Shaheed Mohtarma Benazir Bhutto Medical University (SMBBMU), Larkana, Sindh, Pakistan
| | - Zahid Ali Shaikh
- Zahid Ali Shaikh, FCPS. Chandka Medical College Hospital, Shaheed Mohtarma Benazir Bhutto Medical University (SMBBMU), Larkana, Sindh, Pakistan
| | - Aftab Hussain Shah
- Aftab Hussain Shah, FCPS, FRCP. Chandka Medical College Hospital, Shaheed Mohtarma Benazir Bhutto Medical University (SMBBMU), Larkana, Sindh, Pakistan
| | - Aneel Kumar
- Aneel Kumar, FCPS. Chandka Medical College Hospital, Shaheed Mohtarma Benazir Bhutto Medical University (SMBBMU), Larkana, Sindh, Pakistan
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Zvizdic Z, Milisic E, Jonuzi A, Terzic S, Zvizdic D, Vranic S. The Effects of Ranitidine Treatment on the Risk of Necrotizing Enterocolitis in Preterm Infants: A Case-Control Study. ACTA MEDICA (HRADEC KRÁLOVÉ) 2021; 64:8-14. [PMID: 33855953 DOI: 10.14712/18059694.2021.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Gastric acidity plays an important role in the protection of infants against various pathogens from the environment. The histamine-2 receptor blockers (H2-blockers) are off-labeled drugs that are frequently prescribed in preterm neonates to prevent stress ulcers. The impact of the H2-blockers on the development of the necrotizing enterocolitis (NEC) in preterm infants is still controversial, particularly in the developing world. MATERIALS AND METHODS One hundred twenty-two preterm infants were enrolled in the study. The multivariate logistic regression model was used to identify potential postnatal risk factors associated with NEC. RESULTS Preterm infants (n = 51) with total NEC, medical NEC, and surgical NEC had the highest rate of receiving ranitidine compared with controls (n = 71) (39.2%, 19.6%, and 47.6%, p < 0.05). Logistic regression analysis revealed that ranitidine use and nosocomial infections were significantly associated with NEC development (odds ratios 1.55 and 3.3). CONCLUSIONS We confirm that ranitidine administration was associated with an increased risk of NEC in preterm infants. H2-blockers use should be only administered in very strictly selected cases after careful consideration of the risk-benefit ratio.
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Affiliation(s)
- Zlatan Zvizdic
- Clinic of Pediatric Surgery, University Clinical Center Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Emir Milisic
- Clinic of Pediatric Surgery, University Clinical Center Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Asmir Jonuzi
- Clinic of Pediatric Surgery, University Clinical Center Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Sabina Terzic
- Pediatric Clinic, Neonatal Intensive Care Unit, University Clinical Center Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Denisa Zvizdic
- Eye Clinic, Department of Pediatric Ophthalmology, University Clinical Center Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Semir Vranic
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, Doha, Qatar. .,College of Medicine, QU Health, Qatar University, Doha, Qatar.
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Oral–Gut Microbiome Axis in Gastrointestinal Disease and Cancer. Cancers (Basel) 2021. [DOI: 10.3390/cancers13071748] [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] Open
Abstract
It is well-known that microbiota dysbiosis is closely associated with numerous diseases in the human body. The oral cavity and gut are the two largest microbial habitats, playing a major role in microbiome-associated diseases. Even though the oral cavity and gut are continuous regions connected through the gastrointestinal tract, the oral and gut microbiome profiles are well-segregated due to the oral–gut barrier. However, the oral microbiota can translocate to the intestinal mucosa in conditions of the oral–gut barrier dysfunction. Inversely, the gut-to-oral microbial transmission occurs as well in inter- and intrapersonal manners. Recently, it has been reported that oral and gut microbiomes interdependently regulate physiological functions and pathological processes. Oral-to-gut and gut-to-oral microbial transmissions can shape and/or reshape the microbial ecosystem in both habitats, eventually modulating pathogenesis of disease. However, the oral–gut microbial interaction in pathogenesis has been underappreciated to date. Here, we will highlight the oral–gut microbiome crosstalk and its implications in the pathogenesis of the gastrointestinal disease and cancer. Better understanding the role of the oral–gut microbiome axis in pathogenesis will be advantageous for precise diagnosis/prognosis and effective treatment.
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50
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Horvath A, Bausys A, Sabaliauskaite R, Stratilatovas E, Jarmalaite S, Schuetz B, Stiegler P, Bausys R, Stadlbauer V, Strupas K. Distal Gastrectomy with Billroth II Reconstruction is Associated with Oralization of Gut Microbiome and Intestinal Inflammation: A Proof-of-Concept Study. Ann Surg Oncol 2021; 28:1198-1208. [PMID: 32504369 PMCID: PMC7801296 DOI: 10.1245/s10434-020-08678-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND Subtotal gastrectomy with Billroth II reconstruction (SGB2) results in increased gastric pH and diminished gastric barrier. Increased gastric pH following PPI therapy has an impact on the gut microbiome, intestinal inflammation, and possibly patient health. If similar changes are present after SGB2, these can be relevant for patient health and long-term outcomes after surgery. The aim of the study is to investigate whether SGB2 is associated with specific changes in gut microbiome composition and intestinal inflammation. PATIENTS AND METHODS This cross-sectional proof-of-concept study includes patients after SGB2 (n = 14) for early gastric cancer and their nongastrectomized in-house relatives as controls (n = 8). Fecal microbiome composition, intestinal inflammation (fecal calprotectin), gut permeability (DAO, LBP, sCD14), systemic inflammation (CRP) markers, and gastrointestinal symptoms are investigated. This study is registered at ClinicalTrials.gov (NCT03418428). RESULTS Microbiome oralization following SGB2 was defined by an increase in Escherichia-Shigella, Enterococcus, Streptococcus, and other typical oral cavity bacteria (Veillonella, Oribacterium, and Mogibacterium) abundance. The fecal calprotectin was increased in the SGB2 group [100.9 (52.1; 292) vs. 25.8 (17; 66.5); p = 0.014], and calprotectin levels positively correlated with the abundance of Streptococcus (rs = 0.639; padj = 0.023). Gastrointestinal symptoms in SGB2 patients were associated with distinct taxonomic changes of the gut microbiome. CONCLUSIONS SGB2 is associated with oralization of the gut microbiome; intestinal inflammation and microbiome changes were associated with gastrointestinal symptoms. These novel findings may open gut microbiome as a new target for therapy to improve quality of life and general patient health in long-term survivors after SGB2.
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Affiliation(s)
- Angela Horvath
- Department of Gastroenterology and Hepatology, Medical University of Graz, Graz, Austria
| | - Augustinas Bausys
- Department of Abdominal Surgery and Oncology, National Cancer Institute, Vilnius, Lithuania.
- Clinic of Gastroenterology, Nephrourology and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius, Lithuania.
- Department of Transplantation Surgery, Medical University of Graz, Graz, Austria.
| | | | | | | | | | - Philipp Stiegler
- Department of Transplantation Surgery, Medical University of Graz, Graz, Austria
| | - Rimantas Bausys
- Department of Abdominal Surgery and Oncology, National Cancer Institute, Vilnius, Lithuania
- Clinic of Gastroenterology, Nephrourology and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Vanessa Stadlbauer
- Department of Gastroenterology and Hepatology, Medical University of Graz, Graz, Austria
| | - Kestutis Strupas
- Clinic of Gastroenterology, Nephrourology and Surgery, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
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