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Hussein N, Rajasuriar R, Khan AM, Lim YAL, Gan GG. The Role of the Gut Microbiome in Hematological Cancers. Mol Cancer Res 2024; 22:7-20. [PMID: 37906201 DOI: 10.1158/1541-7786.mcr-23-0080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 06/23/2023] [Accepted: 10/27/2023] [Indexed: 11/02/2023]
Abstract
Humans are in a complex symbiotic relationship with a wide range of microbial organisms, including bacteria, viruses, and fungi. The evolution and composition of the human microbiome can be an indicator of how it may affect human health and susceptibility to diseases. Microbiome alteration, termed as dysbiosis, has been linked to the pathogenesis and progression of hematological cancers. A variety of mechanisms, including epithelial barrier disruption, local chronic inflammation response trigger, antigen dis-sequestration, and molecular mimicry, have been proposed to be associated with gut microbiota. Dysbiosis may be induced or worsened by cancer therapies (such as chemotherapy and/or hematopoietic stem cell transplantation) or infection. The use of antibiotics during treatment may also promote dysbiosis, with possible long-term consequences. The aim of this review is to provide a succinct summary of the current knowledge describing the role of the microbiome in hematological cancers, as well as its influence on their therapies. Modulation of the gut microbiome, involving modifying the composition of the beneficial microorganisms in the management and treatment of hematological cancers is also discussed. Additionally discussed are the latest developments in modeling approaches and tools used for computational analyses, interpretation and better understanding of the gut microbiome data.
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Affiliation(s)
- Najihah Hussein
- Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Reena Rajasuriar
- Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Asif M Khan
- School of Data Sciences, Perdana University, Kuala Lumpur, Malaysia
- Beykoz Institute of Life Sciences and Biotechnology, Bezmialem Vakif University, Istanbul, Turkiye
- College of Computing and Information Technology, University of Doha for Science and Technology, Doha, Qatar
| | - Yvonne Ai-Lian Lim
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Gin Gin Gan
- Department of Medicine, Faculty of Medicine, Universiti Malaya, Kuala Lumpur, Malaysia
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Qiao X, Biliński J, Wang L, Yang T, Luo R, Fu Y, Yang G. Safety and efficacy of fecal microbiota transplantation in the treatment of graft-versus-host disease. Bone Marrow Transplant 2023; 58:10-19. [PMID: 36167905 DOI: 10.1038/s41409-022-01824-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/24/2022] [Accepted: 09/01/2022] [Indexed: 01/10/2023]
Abstract
This article evaluates the efficacy and safety of FMT in the treatment of GVHD after HSCT using a systematic literature search to conduct a meta-analysis constructed of studies involving GVHD patients treated with FMT. 23 studies were included, among which 2 prospective cohort studies, 10 prospective single arm studies, 2 retrospective single arm studies, 2 case series and 7 case reports, comprise a total of 242 patients with steroid-resistant or steroid-dependent GVHD secondary to HSCT who were treated with FMT. 100 cases achieved complete responses, while 61 cases showed partial responses, and 81 cases presented no effect after FMT treatment. The estimate of clinical remission odds ratio was 5.51 (95% CI 1.49-20.35) in cohort studies, and the pooled clinical remission rate is 64% (51-77%) in prospective single arm studies and 81% (62-95%) in retrospective studies, case series and case reports. Five (2.1%) patients had FMT-related infection events, but all recovered after treatment. Other adverse effects were mild and acceptable. Microbiota diversity and composition, donor type, and other related issues were also analyzed. The data proves that FMT is a promising treatment modality of GVHD, but further validation of its safety and efficacy is still needed with prospective control studies.Clinical trial registration: Registered in https://www.crd.york.ac.uk/PROSPERO/ CRD42022296288.
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Affiliation(s)
- Xiaoying Qiao
- Peking University Health Science Center, Beijing, 100191, China.,Peking University People'hospital, Beijing, China
| | - Jarosław Biliński
- Department of Hematology, Transplantation and Internal Medicine, Medical University of Warsaw, Warsaw, Poland.
| | - Leyi Wang
- Peking University Health Science Center, Beijing, 100191, China
| | - Tianyu Yang
- Peking University Health Science Center, Beijing, 100191, China
| | - Rongmu Luo
- Department of Hematology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, 100049, China
| | - Yi Fu
- Department of Gastroenterology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, 100049, China
| | - Guibin Yang
- Department of Gastroenterology, Aerospace Center Hospital, Peking University Aerospace School of Clinical Medicine, Beijing, 100049, China.
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Exposure to antibiotics with anaerobic activity before respiratory viral infection is associated with respiratory disease progression after hematopoietic cell transplant. Bone Marrow Transplant 2022; 57:1765-1773. [PMID: 36064752 DOI: 10.1038/s41409-022-01790-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 08/09/2022] [Accepted: 08/11/2022] [Indexed: 11/08/2022]
Abstract
We examined associations between specific antibiotic exposures and progression to lower respiratory tract disease (LRTD) following individual respiratory viral infections (RVIs) after hematopoietic cell transplantation (HCT). We analyzed allogeneic HCT recipients of all ages with their first RVI during the first 100 days post-HCT. For the 21 days before RVI onset, we recorded any receipt of specific groups of antibiotics, and the cumulative sum of the number of antibiotics received for each day (antibiotic-days). We used Cox proportional hazards models to assess the relationship between antibiotic exposure and progression to LRTD. Among 469 patients with RVI, 124 progressed to LRTD. Compared to no antibiotics, use of antibiotics with broad anaerobic activity in the prior 21 days was associated with progression to LRTD after adjusting for age, virus type, hypoalbuminemia, neutropenia, steroid use, and monocytopenia (HR 2.2, 95% CI 1.1-4.1). Greater use of those antibiotics (≥7 antibiotic days) was also associated with LRTD in adjusted models (HR 2.2, 95% CI 1.1-4.3). Results were similar after adjusting for lymphopenia instead of monocytopenia. Antibiotic use is associated with LRTD after RVI across different viruses in HCT recipients. Prospective studies using anaerobe-sparing antibiotics should be explored to assess impact on LRTD in patients undergoing HCT.
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Biernat MM, Urbaniak-Kujda D, Dybko J, Kapelko-Słowik K, Prajs I, Wróbel T. Fecal microbiota transplantation in the treatment of intestinal steroid-resistant graft-versus-host disease: two case reports and a review of the literature. J Int Med Res 2021; 48:300060520925693. [PMID: 32527171 PMCID: PMC7294377 DOI: 10.1177/0300060520925693] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Acute graft-versus-host disease (aGvHD) reduces the efficiency and safety of allogeneic hematopoietic stem cell transplantation (allo-HSCT). In recent years, attempts have been made to transplant fecal microbiota from healthy donors to treat intestinal GvHD. This study presented two cases of patients undergoing allo-HSCT who were later selected for fecal microbiota transplantation (FMT). In the first patient, FMT resulted in the complete resolution of symptoms, whereas therapeutic efficacy was not achieved in the second patient. FMT eliminated drug-resistant pathogens, namely very drug-resistant Enterococcus spp., but not multidrug-resistant Acinetobacter baumannii or Candida spp. Further research is needed, particularly on the safety of FMT in patients with intestinal steroid-resistant GvHD and on the distant impact of transplanted microflora on the outcomes of allo-HSCT. FMT appears promising for the treatment of patients with steroid-resistant GvHD.
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Affiliation(s)
- Monika Maria Biernat
- Department and Clinic of Haematology, Blood Neoplasms, and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
| | - Donata Urbaniak-Kujda
- Department and Clinic of Haematology, Blood Neoplasms, and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
| | - Jarosław Dybko
- Department and Clinic of Internal and Occupational Diseases and Hypertension, Wroclaw Medical University, Wroclaw, Poland
| | - Katarzyna Kapelko-Słowik
- Department and Clinic of Haematology, Blood Neoplasms, and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
| | - Iwona Prajs
- Department and Clinic of Haematology, Blood Neoplasms, and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
| | - Tomasz Wróbel
- Department and Clinic of Haematology, Blood Neoplasms, and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
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High-resolution mycobiota analysis reveals dynamic intestinal translocation preceding invasive candidiasis. Nat Med 2020; 26:59-64. [PMID: 31907459 PMCID: PMC7005909 DOI: 10.1038/s41591-019-0709-7] [Citation(s) in RCA: 185] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Accepted: 11/19/2019] [Indexed: 12/27/2022]
Abstract
The intestinal microbiota is a complex community of bacteria, archaea, viruses, protists and fungi1,2. While the composition of bacterial constituents has been linked to immune homeostasis and to infectious susceptibility3–7, the role of non-bacterial constituents and of cross-kingdom microbial interactions in these processes is poorly understood2,8. Fungi represent a major cause of infectious morbidity and mortality in immune-compromised individuals, though the relationship of intestinal fungi (i.e., the mycobiota) with fungal bloodstream infections (BSI) remains undefined9. We integrated an optimized bioinformatics pipeline with high-resolution mycobiota sequencing and comparative genomic analyses of fecal and blood specimens from recipients of allogeneic hematopoietic cell transplant (allo-HCT). Patients with Candida BSI experienced a prior marked intestinal expansion of pathogenic Candida species; this expansion consisted of a complex dynamic between multiple species and subspecies with a stochastic translocation pattern into the bloodstream. The intestinal expansion of pathogenic Candida species was associated with a significant loss in bacterial burden and diversity, particularly in the anaerobes. Thus, simultaneous analysis of intestinal fungi and bacteria identifies dysbiosis states across kingdoms that may promote fungal translocation and facilitate invasive disease. These findings support microbiota-driven approaches to identify patients at risk for fungal BSI for pre-emptive therapeutic intervention.
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Pizzo PA. Management of Patients With Fever and Neutropenia Through the Arc of Time: A Narrative Review. Ann Intern Med 2019; 170:389-397. [PMID: 30856657 DOI: 10.7326/m18-3192] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The association between fever and neutropenia and the risk for life-threatening infections in patients receiving cytotoxic chemotherapy has been known for 50 years. Indeed, infectious complications have been a leading cause of morbidity and mortality in patients with cancer. This review chronicles the progress in defining and developing approaches to the management of fever and neutropenia through observational and controlled clinical trials done by single institutions, as well as by national and international collaborative groups. The resultant data have led to recommendations and guidelines from professional societies and frame the current principles of management. Recommendations include those guiding new treatment options (from monotherapy to oral antibiotic therapy) and use of prophylactic antimicrobial regimens in high-risk patients. Of note, risk factors have changed with the advent of hematopoietic cytokines (especially granulocyte colony-stimulating factor) in shortening the duration of neutropenia, as well as with the discovery of more targeted cancer treatments that do not result in cytotoxicity, although these are still the exception. Most guiding principles that were developed decades ago-about when to begin empirical treatment after a neutropenic patient becomes febrile, whether and how to modify the initial treatment regimen (especially in patients with protracted neutropenia), and how long to continue antimicrobial therapy-are still used today. This review describes how the treatment principles related to the management of fever and neutropenia have responded to changes in the patients at risk, the microbes responsible, and the tools for their treatment, while still being sustained over the arc of time.
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Affiliation(s)
- Philip A Pizzo
- Stanford University School of Medicine and Stanford Distinguished Careers Institute, Stanford University, Stanford, California (P.A.P.)
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Lewalle P, Pochon C, Michallet M, Turlure P, Brissot E, Paillard C, Puyade M, Roth-Guepin G, Yakoub-Agha I, Chantepie S. [Prophylaxis of infections post-allogeneic transplantation: Guidelines from the Francophone Society of Bone Marrow Transplantation and Cellular Therapy (SFGM-TC)]. Bull Cancer 2019; 106:S23-S34. [PMID: 30616839 DOI: 10.1016/j.bulcan.2018.08.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/19/2018] [Accepted: 08/27/2018] [Indexed: 02/07/2023]
Abstract
Allogeneic hematopoietic stem cell transplantation is a curative treatment for many hematological diseases. However, this procedure causes the patient to be susceptible to infection. Prophylactic treatments are administered in clinical practice even thought the level of evidence of their effectiveness is not always high. In addition, changes in the transplantation procedures - use of reduced intensity conditioning, development of alternative graft sources - must lead to a rethinking of attitudes towards prophylaxis. Our working group based its recommendations on a review of referential articles and publications on the subject found in the literature. These recommendations concern the prophylaxis of infections caused by HSV1, HSV2, varicella zoster, and hepatitis B, as well as anti-bacterial and digestive decontamination prophylaxis, prevention of pneumocystis, toxoplasmosis, tuberculosis, as well as prophylaxis of fungal infections. Other infectious agents usually involved in infections post-allotransplant have been the subject of another set of recommendations from the French Society of Bone Marrow Transplantation and Cellular Therapy.
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Affiliation(s)
- Philippe Lewalle
- Institut Jules-Bordet, université Libre-de-Bruxelles, service d'hématologie, 1, rue Héger-Bordet, 1000 Bruxelles, Belgique
| | - Cécile Pochon
- CHU de Nancy, service d'onco-hématologie pédiatrique, rue du Morvan, 54511 Vandoeuvre-lès-Nancy, France
| | | | - Pascal Turlure
- Centre hospitalier universitaire, service d'hématologie, 87042 Limoges, France
| | - Eolia Brissot
- Assistance publique des hôpitaux de Paris (AP-HP), hôpital Saint-Antoine, département d'hématologie, 75012 Paris, France
| | | | - Mathieu Puyade
- CHU de Poitiers, service de médecine interne, unité d'hospitalisation d'aval, 2, rue de la Milétrie, 86021 Poitiers cedex, France
| | | | - Ibrahim Yakoub-Agha
- CHRU de Lille, service des maladies du sang, 2, avenue Oscar-Lambret, 59037 Lille cedex, France; Université de Lille 2, LIRIC, Inserm U995, 59000 Lille, France
| | - Sylvain Chantepie
- Institut d'hématologie de Basse-Normandie, centre hospitalier universitaire, avenue de la Côte-de-Nacre, 14000 Caen, France.
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Ogimi C, Krantz EM, Golob JL, Waghmare A, Liu C, Leisenring WM, Woodard CR, Marquis S, Kuypers JM, Jerome KR, Pergam SA, Fredricks DN, Sorror ML, Englund JA, Boeckh M. Antibiotic Exposure Prior to Respiratory Viral Infection Is Associated with Progression to Lower Respiratory Tract Disease in Allogeneic Hematopoietic Cell Transplant Recipients. Biol Blood Marrow Transplant 2018; 24:2293-2301. [PMID: 29777867 PMCID: PMC6286157 DOI: 10.1016/j.bbmt.2018.05.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 05/15/2018] [Indexed: 12/22/2022]
Abstract
Recent publications note an association between antibiotic exposure and respiratory viral infections (RVIs). Antibiotics affect microbiota and impair immune response against RVIs in mice, and low microbiome diversity is associated with pulmonary complications including viral lower respiratory tract disease (LRTD) in hematopoietic cell transplantation (HCT) recipients. In this study, we examined whether antibiotic exposure was associated with increased risk of disease progression in RVIs post-transplantation. We analyzed patients who underwent allogeneic HCT (June 2008 to February 2016) and had their first RVI due to parainfluenza virus (PIV), respiratory syncytial virus (RSV), or human metapneumovirus (MPV) during the initial 100 days post-transplantation. Antibiotic exposure in the 3 weeks before RVI onset was defined as (1) use of specific antibiotics versus none of these antibiotics and (2) number of antibiotic-days. Cox proportional hazards models were used to examine associations between antibiotic exposures and risk of viral disease progression to proven/probable/possible LRTD. Ninety HCT recipients (84 adults, 6 children) fulfilled study criteria; 33 progressed to LRTD. The number of antibiotic-days was associated with progression to LRTD after adjusting for neutropenia, steroid use, and either lymphopenia (hazard ratio, 1.41 [95% confidence interval, 1.04 to 1.92], P = .027) or monocytopenia (hazard ratio, 1.46 [95% confidence interval, 1.11 to 1.91], P = .006). Specific antibiotic classes was not associated with the outcome. Cumulative antibiotic exposure immediately before RVI onset is a risk factor for disease progression following PIV, RSV, and MPV infections post-transplantation. Larger cohort studies are needed to determine the impact of specific antibiotics or antibiotic classes on disease severity.
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Affiliation(s)
- Chikara Ogimi
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Pediatrics, University of Washington, Seattle, Washington; Pediatric Infectious Diseases Division, Seattle Children's Hospital, Seattle, Washington.
| | - Elizabeth M Krantz
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Jonathan L Golob
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Medicine, University of Washington, Seattle, Washington; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Alpana Waghmare
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Pediatrics, University of Washington, Seattle, Washington; Pediatric Infectious Diseases Division, Seattle Children's Hospital, Seattle, Washington
| | - Catherine Liu
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Medicine, University of Washington, Seattle, Washington; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Wendy M Leisenring
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Biostatistics, University of Washington, Seattle, Washington
| | - Christopher R Woodard
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Sara Marquis
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Jane M Kuypers
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Laboratory Medicine, University of Washington, Seattle, Washington
| | - Keith R Jerome
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Laboratory Medicine, University of Washington, Seattle, Washington
| | - Steven A Pergam
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Medicine, University of Washington, Seattle, Washington; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - David N Fredricks
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Medicine, University of Washington, Seattle, Washington; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Mohamed L Sorror
- Department of Medicine, University of Washington, Seattle, Washington; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Janet A Englund
- Department of Pediatrics, University of Washington, Seattle, Washington; Pediatric Infectious Diseases Division, Seattle Children's Hospital, Seattle, Washington
| | - Michael Boeckh
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington; Department of Medicine, University of Washington, Seattle, Washington; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington.
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Noor F, Kaysen A, Wilmes P, Schneider JG. The Gut Microbiota and Hematopoietic Stem Cell Transplantation: Challenges and Potentials. J Innate Immun 2018; 11:405-415. [PMID: 30286447 DOI: 10.1159/000492943] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 08/08/2018] [Indexed: 12/17/2022] Open
Abstract
The human gut microbiota gained tremendous importance in the last decade as next-generation technologies of sequencing and multiomics analyses linked the role of the microbial communities to host physiology and pathophysiology. A growing number of human pathologies and diseases are linked to the gut microbiota. One of the main mechanisms by which the microbiota influences the host is through its interactions with the host immune system. These interactions with both innate and adaptive host intestinal and extraintestinal immunity, although usually commensalistic even mutualistic with the host, in some cases lead to serious health effects. In the case of allogenic hematopoietic stem cell transplantation (allo-HSCT), the disruption of the intestinal microbiota diversity is associated with acute graft-versus-host disease (GvHD). Causing inflammation of the liver, skin, lungs, and the intestine, GvHD occurs in 40-50% of patients undergoing allo-HSCT and results in significant posttransplantation mortality. In this review, we highlight the impact of the gut microbiota on the host immunity in GvHD and the potential of microbiota in alleviation or even prevention of GvHD.
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Affiliation(s)
- Fozia Noor
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Belvaux, Luxembourg
| | - Anne Kaysen
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Belvaux, Luxembourg
| | - Paul Wilmes
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Belvaux, Luxembourg
| | - Jochen G Schneider
- Luxembourg Centre for Systems Biomedicine, University of Luxembourg, Belvaux, Luxembourg, .,Saarland University Medical Center, Klinik für Innere Medizin II, Homburg, Germany, .,Centre Hospitalier Emile Mayrisch, Esch/Alzette, Luxembourg,
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Mishra AA, Koh AY. Adaptation of Candida albicans during gastrointestinal tract colonization. CURRENT CLINICAL MICROBIOLOGY REPORTS 2018; 5:165-172. [PMID: 30560045 DOI: 10.1007/s40588-018-0096-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Purpose of Review Colonization of the gastrointestinal (GI) tract with Candida albicans (CA), the most common human fungal pathogen, is the first step towards the development of invasive infection. Yet the fungal virulence factors and host factors that modulate CA GI colonization are still poorly understood. In this review, we will review emerging evidence of the importance of select CA genetic determinants and CA's interaction with the host that contribute to its successful adaptation as a pathobiont in the human GI tract. Recent Findings Recent data reveal the importance of 1) CA genetic determinants; 2) host factors; and 3) environmental factors in modulating CA GI colonization in humans. Summary As evidence continues to grow supporting the notion that the GI tract and its resident microbiota are an integral part of the host immune system, it will be critical for studies to interrogate the interaction of CA with the host (including both the host innate and adaptive immune system as well as the endogenous gut microbiota) in order to dissect the mechanisms of CA pathogenesis and thus lay the foundation for novel therapeutic approaches to prevent and/or treat invasive fungal infections.
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Affiliation(s)
- Animesh A Mishra
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Andrew Y Koh
- Department of Microbiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.,Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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