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Santhanam P, Egberg M, Kappelman MD. Higher mortality rates associated with Clostridioides difficile infection in hospitalized children with cystic fibrosis. Pediatr Pulmonol 2023; 58:484-491. [PMID: 36349995 DOI: 10.1002/ppul.26214] [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] [Received: 04/06/2022] [Revised: 08/18/2022] [Accepted: 09/28/2022] [Indexed: 11/10/2022]
Abstract
OBJECTIVE(S) To determine the association of Clostridioides difficile Infection (CDI) with in-hospital mortality, Length of Stay (LOS), and hospital charges among pediatric Cystic Fibrosis (CF) hospitalizations using a large nationally representative pediatric hospital database. STUDY DESIGN We identified Cystic Fibrosis-related hospitalizations during the years 1997 to 2016 in the Kids' Inpatient Database (KID) and compared in-hospital mortality, LOS, and hospital charges among hospitalizations with and without a coexisting diagnosis of C. difficile using logistic regression models for mortality and general linear models with gamma distribution and logarithmic transformation for LOS and hospital charges. We also evaluated temporal trends in the proportion of CF hospitalizations with concomitant CDI using data published triennially RESULTS: We analyzed 21,616 pediatric CF hospitalizations between the years 1997 to 2016 and found a total of 240 (1.1%) hospitalizations with concurrent CDI diagnosis. Adjusted analyses demonstrated an association of CDI with increased mortality (OR 5.2, 95% CI 2.5-10.7), longer LOS (46.5% increment, 95% CI 36.0-57.1), and higher charges (65.8% increment, 95% CI 53.5-78.1) for all comparisons. The proportion of CF hospitalizations with CDI increased over time from 0.64% in 1997 to 1.73% in 2016 (p < 0.001). CONCLUSION(S) As CDI is associated with excess mortality, LOS, and cost in children hospitalized for CF, a healthy level of suspicion for CDI may be needed in patients with CF in the appropriate clinical context. Efforts to prevent, diagnose, and treat CDI may improve hospital outcomes among children with CF.
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Affiliation(s)
- Prathipa Santhanam
- Division of Pediatric Gastroenterology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Matthew Egberg
- Division of Pediatric Gastroenterology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Multidisciplinary Center for Inflammatory Bowel Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Michael D Kappelman
- Division of Pediatric Gastroenterology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Multidisciplinary Center for Inflammatory Bowel Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.,Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
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2
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Fu Y, Luo Y, Grinspan AM. Epidemiology of community-acquired and recurrent Clostridioides difficile infection. Therap Adv Gastroenterol 2021; 14:17562848211016248. [PMID: 34093740 PMCID: PMC8141977 DOI: 10.1177/17562848211016248] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/19/2021] [Indexed: 02/06/2023] Open
Abstract
Clostridioides difficile infection is a leading cause of healthcare-associated infections with significant morbidity and mortality. For the past decade, the bulk of infection prevention and epidemiologic surveillance efforts have been directed toward mitigating hospital-acquired C. difficile. However, the incidence of community-associated infection is on the rise. Patients with community-associated C. difficile tend to be younger and have lower mortality rate. Rates of recurrent C. difficile infection overall have decreased in the United States, but future research and public health endeavors are needed to standardize and improve disease detection, stratify risk factors in large-scale population studies, and to identify regional and local variations in strain types, reservoirs and transmission routes to help characterize and combat the changing epidemiology of C. difficile.
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Affiliation(s)
- Yichun Fu
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Yuying Luo
- Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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3
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Clostridioides difficile colonization and infection in a cohort of Australian adults with cystic fibrosis. J Hosp Infect 2021; 113:44-51. [PMID: 33775742 DOI: 10.1016/j.jhin.2021.03.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Little is known about Clostridioides difficile infection (CDI) in patients with cystic fibrosis (CF). The aim of this study was to investigate the prevalence, molecular epidemiology and risk factors for CDI in asymptomatic and symptomatic adults with CF in Western Australia. METHODS Faecal samples from symptomatic and asymptomatic patients were prospectively collected and tested for the presence of C. difficile by toxigenic culture. Ribotyping was performed by established protocols. Logistic regression analysis was performed to analyse the risk factors for C. difficile colonization and infection. Extensive environmental sampling was performed within the CF clinic in Perth. RESULTS The prevalence rates of asymptomatic toxigenic and non-toxigenic C. difficile colonization were 30% (14/46 patients) and 24% (11/46 patients), respectively. Fifteen ribotypes (RTs) of C. difficile were identified, of which non-toxigenic RT 039 was the most common. Among the symptomatic patients, the prevalence of toxigenic CDI was 33% (11/33 patients). Impaired glucose tolerance/diabetes mellitus and duration of intravenous antibiotic use in the past 12 months were significantly associated with increased risk of asymptomatic toxigenic C. difficile carriage and CDI. A trend towards higher CF transmembrane conductance regulator modulator treatment was observed in the CDI group. Extensive environmental sampling showed no evidence of toxigenic C. difficile contamination within the CF clinic. CONCLUSIONS A high prevalence of asymptomatic carriage of toxigenic C. difficile was observed in adults with CF, comparable with that observed in the symptomatic CF population. There was no evidence of direct person-to-person transmission.
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4
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J Burton S, Hachem C, Abraham JM. Luminal Gastrointestinal Manifestations of Cystic Fibrosis. Curr Gastroenterol Rep 2021; 23:4. [PMID: 33758994 DOI: 10.1007/s11894-021-00806-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/12/2021] [Indexed: 12/12/2022]
Abstract
PURPOSE OF REVIEW People with cystic fibrosis (CF) are living longer. General age-related and CF-specific gastrointestinal symptoms are increasingly recognized. In this article, we review the latest data on luminal gastrointestinal manifestations in CF. RECENT FINDINGS People with CF have increased incidence of gastroesophageal reflux disease symptoms and often prescribed proton-pump inhibitors (PPI). PPI use may increase risk of pulmonary exacerbations. Evidence to support gastric fundoplication to improve pulmonary outcomes is limited. Features of intestinal dysmotility are common. There are distinct differences in the gut microbiome in the CF population which may have clinical implications. CF is a possible hereditary digestive cancer syndrome, particularly in regard to colorectal cancer (CRC) with earlier incidence of CRC and advanced colonic neoplasia. Early screening colonoscopy is warranted in the CF population. Gastrointestinal manifestations in CF are prevalent across all digestive organs. More study on the effect of interventions for symptomatic treatment and cancer screening is needed.
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Affiliation(s)
- Samuel J Burton
- Division of Gastroenterology and Hepatology, Saint Louis University, St. Louis, MI, USA
| | - Christine Hachem
- Division of Gastroenterology and Hepatology, Saint Louis University, St. Louis, MI, USA
| | - James M Abraham
- Department of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, MI, USA.
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5
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Deane J, Fouhy F, Ronan NJ, Daly M, Fleming C, Eustace JA, Shanahan F, Flanagan ET, Dupont L, Harrison MJ, Haworth CS, Floto A, Rea MC, Ross RP, Stanton C, Plant BJ. A multicentre analysis of Clostridium difficile in persons with Cystic Fibrosis demonstrates that carriage may be transient and highly variable with respect to strain and level. J Infect 2021; 82:363-370. [PMID: 33444699 DOI: 10.1016/j.jinf.2020.12.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 12/15/2020] [Accepted: 12/28/2020] [Indexed: 01/16/2023]
Abstract
PURPOSE Clostridium difficile has been reported to occur in the gastrointestinal tract of 50% of Cystic Fibrosis (CF) subjects, however, clinical C. difficile infection (CDI) is a rare occurrence in this cohort despite the presence of toxigenic and hypervirulent ribotypes. Here, we present the first longitudinal, multicentre analysis of C. difficile prevalence among adult CF subjects. METHODOLOGY Faecal samples were collected from adults with CF (selected based on confirmed Pseudomonas aeruginosa pulmonary colonisation) from Ireland, UK and Belgium as part of the CFMATTERS clinical research trial (grant No. 603038) and from non-CF controls. Faecal samples were collected on enrolment, at three monthly intervals, during pulmonary exacerbation and three months post exacerbation. C. difficile was isolated from faecal samples by ethanol shocking followed by culturing on cycloserine cefoxitin egg yolk agar. Isolates were characterised in terms of ribotype, toxin type and antibiotic susceptibility to antibiotics routinely used in the treatment of CDI (metronidazole and vancomycin) and those implicated in induction of CDI (ciprofloxacin and moxifloxacin). RESULTS Prevalence of C. difficile among CF subjects in the three sites was similar ranging from 47% to 50% at baseline, while the healthy control cohort had a carriage rate of 7.1%. Including subjects who were positive for C. difficile at any time point there was a higher carriage rate of 71.4%, 66.7% and 63.2% in Ireland, UK, and Belgium, respectively. Ribotyping of 80 isolates from 45 CF persons, over multiple time points revealed 23 distinct ribotypes with two ribotypes (046 and 078) shared by all centres. The proportion of toxigenic isolates varied across the sites, ranging from 66.7% in Ireland to 52.9% in Belgium and 100% in the UK. Antibiotic susceptibility rates to vancomycin, metronidazole, ciprofloxacin and moxifloxacin was 100%, 97.5%, 1.3% and 63.8%, respectively. CONCLUSIONS This study demonstrates the highest carriage rate of C. difficile to date in a CF cohort. Longitudinal data show that C. difficile can be a transient inhabitant of the CF gut, changing both in terms of strain and excretion rates.
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Affiliation(s)
- Jennifer Deane
- Teagasc Food Research Centre, Moorepark, Fermoy, Co., Cork, Ireland; HRB Clinical Research Facility, University College Cork, Cork, Ireland; School of Microbiology, University College Cork, Cork, Ireland
| | - Fiona Fouhy
- Teagasc Food Research Centre, Moorepark, Fermoy, Co., Cork, Ireland; APC Microbiome Ireland, Cork, Ireland
| | - Nicola J Ronan
- Cork Adult Cystic Fibrosis Centre, University College Cork, Cork University Hospital, Wilton, Cork, Ireland
| | - Mary Daly
- Cork Adult Cystic Fibrosis Centre, University College Cork, Cork University Hospital, Wilton, Cork, Ireland
| | - Claire Fleming
- Cork Adult Cystic Fibrosis Centre, University College Cork, Cork University Hospital, Wilton, Cork, Ireland
| | - Joseph A Eustace
- HRB Clinical Research Facility, University College Cork, Cork, Ireland
| | | | - Evelyn T Flanagan
- Cork Adult Cystic Fibrosis Centre, University College Cork, Cork University Hospital, Wilton, Cork, Ireland
| | | | - Michael J Harrison
- Cambridge Centre for Lung Infection, Papworth Hospital, Cambridge United Kingdom
| | - Charles S Haworth
- Cambridge Centre for Lung Infection, Papworth Hospital, Cambridge United Kingdom
| | - Andres Floto
- Cambridge Centre for Lung Infection, Papworth Hospital, Cambridge United Kingdom; Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
| | - Mary C Rea
- Teagasc Food Research Centre, Moorepark, Fermoy, Co., Cork, Ireland; APC Microbiome Ireland, Cork, Ireland
| | | | | | - Barry J Plant
- Cork Adult Cystic Fibrosis Centre, University College Cork, Cork University Hospital, Wilton, Cork, Ireland.
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6
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Yanda MK, Guggino WB, Cebotaru L. A new role for heat shock factor 27 in the pathophysiology of Clostridium difficile toxin B. Am J Physiol Gastrointest Liver Physiol 2020; 318:G120-G129. [PMID: 31709831 PMCID: PMC6985846 DOI: 10.1152/ajpgi.00166.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Clostridiumdifficile (CD) is a common pathogen that causes severe gastrointestinal inflammatory diarrhea in patients undergoing antibiotic therapy. Its virulence derives from two toxins, toxin CD, A and B (TcdA and TcdB) (Borriello et al. Rev Infect Dis 12, Suppl 2: S185-191, 1990). Among the prime candidates for CD colonization are patients with cystic fibrosis (CF), who are routinely treated with antibiotics and frequently hospitalized. Indeed, ~50% of patients with CF are colonized with virulent forms of CD but do not exhibit diarrhea (Bauer et al. Clin Microbiol Infect 20: O446-O449, 2014; Binkovitz et al. Am J Roentgenol 172: 517-521, 199; Zemljic et al. Anaerobe 16: 527-532, 2010). We found that TcdB has global effects on colonic cells, including reducing the steady-state levels of sodium-proton exchange regulatory factors, reducing the levels of heat shock protein (Hsp) 27, and increasing the fraction of total Hsp27 bound to the cystic fibrosis transmembrane conductance regulator (CFTR). Also, since some mutations in CFTR seem to be protective, we asked whether CFTR is a target of TcdB. We show here that TcdB increases the maturation of CFTR and transiently increases its function. These combined effects promote increased surface expression of CFTR, resulting in a transient increase in Cl- secretion. This increase is followed by a precipitous decline in both CFTR-dependent Cl- secretion and transepithelial resistance (TER), suggesting a breakdown in the epithelial cells' tight junctions. We also found that overexpressing Hsp27 reverses some of the deleterious effects of TcdB, in particular preserving TER and therefore likely the maintenance of barrier function. Thus, our data suggest that Hsp27 plays a role in the diarrhea generated by CD infection and is a potential therapeutic target for treating this diarrhea.NEW & NOTEWORTHYClostridium difficile (CD) is a common pathogen that causes severe gastrointestinal inflammatory diarrhea in patients undergoing antibiotic therapy. We provide new evidence that heat shock protein (Hsp) 27 is one of the key players in CD pathology and that increasing Hsp27 can prevent the decrease in transepithelial resistance induced by toxin CD B, pointing the way for pharmacologic therapies for patients with chronic CD infection that can increase Hsp27 as a means to mitigate the effects of CD on gastrointestinal pathology.
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Affiliation(s)
- Murali K. Yanda
- Departments of Medicine and Physiology, Johns Hopkins University, Baltimore, Maryland
| | - William B. Guggino
- Departments of Medicine and Physiology, Johns Hopkins University, Baltimore, Maryland
| | - Liudmila Cebotaru
- Departments of Medicine and Physiology, Johns Hopkins University, Baltimore, Maryland
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7
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Bacterial overgrowth, dysbiosis, inflammation, and dysmotility in the Cystic Fibrosis intestine. J Cyst Fibros 2018; 16 Suppl 2:S14-S23. [PMID: 28986022 DOI: 10.1016/j.jcf.2017.07.014] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 07/15/2017] [Accepted: 07/17/2017] [Indexed: 02/08/2023]
Abstract
Gastrointestinal disease in Cystic Fibrosis (CF) is caused by defective chloride and bicarbonate transport in intestinal cells leading to reduced intraluminal fluidity, increased mucous viscosity and consequently development of intestinal inflammation, dysbiosis and often times dysmotility. This triad is also referred to as the "CF gut". A diagnosis is mainly based on clinical observation and treatment is often times decided empirically. This review of the literature should provide CF caregivers with some tools to identify intestinal inflammation, dysbiosis and dysmotility as possible cause for their patient's gastrointestinal complaints and provide an overview of our current approach to its management.
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8
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Schäffler H, Breitrück A. Clostridium difficile - From Colonization to Infection. Front Microbiol 2018; 9:646. [PMID: 29692762 PMCID: PMC5902504 DOI: 10.3389/fmicb.2018.00646] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 03/19/2018] [Indexed: 12/19/2022] Open
Abstract
Clostridium difficile is the most frequent cause of nosocomial antibiotic-associated diarrhea. The incidence of C. difficile infection (CDI) has been rising worldwide with subsequent increases in morbidity, mortality, and health care costs. Asymptomatic colonization with C. difficile is common and a high prevalence has been found in specific cohorts, e.g., hospitalized patients, adults in nursing homes and in infants. However, the risk of infection with C. difficile differs significantly between these cohorts. While CDI is a clear indication for therapy, colonization with C. difficile is not believed to be a direct precursor for CDI and therefore does not require treatment. Antibiotic therapy causes alterations of the intestinal microbial composition, enabling C. difficile colonization and consecutive toxin production leading to disruption of the colonic epithelial cells. Clinical symptoms of CDI range from mild diarrhea to potentially life-threatening conditions like pseudomembranous colitis or toxic megacolon. While antibiotics are still the treatment of choice for CDI, new therapies have emerged in recent years such as antibodies against C. difficile toxin B and fecal microbial transfer (FMT). This specific therapy for CDI underscores the role of the indigenous bacterial composition in the prevention of the disease in healthy individuals and its role in the pathogenesis after alteration by antibiotic treatment. In addition to the pathogenesis of CDI, this review focuses on the colonization of C. difficile in the human gut and factors promoting CDI.
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Affiliation(s)
- Holger Schäffler
- Division of Gastroenterology, Department of Medicine II, University of Rostock, Rostock, Germany
| | - Anne Breitrück
- Extracorporeal Immunomodulation Unit, Fraunhofer Institute for Cell Therapy and Immunology, Rostock, Germany.,Institute of Medical Microbiology, Virology and Hygiene, University of Rostock, Rostock, Germany
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9
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Dunwoody R, Steel A, Landy J, Simmonds N. Clostridium difficile and cystic fibrosis: management strategies and the role of faecal transplantation. Paediatr Respir Rev 2018; 26:16-18. [PMID: 28411069 DOI: 10.1016/j.prrv.2017.03.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 03/07/2017] [Indexed: 11/17/2022]
Abstract
Clostridium difficile is a bacterial infection that colonises the gut in susceptible hosts. It is associated with exposure to healthcare settings and antibiotic use. It could be assumed that cystic fibrosis (CF) patients are a high-risk group for C.difficile. However, despite high carriage rates, CF patients have low rates of active disease. There are guidelines for the treatment of C.difficile, however little is published specific to treating C.difficile in CF. This article provides an overview of the current management strategies for C.difficile in CF, including a description of the first faecal transplantation in this patient population.
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Affiliation(s)
- Roisin Dunwoody
- Adult Cystic Fibrosis Centre, Royal Brompton Hospital, London, SW3 6NP, United Kingdom
| | - Alan Steel
- Department of Gastroenterology, Chelsea and Westminster Hospital, London, United Kingdom
| | - Jonathan Landy
- Watford General Hospital, Vicarage Road, Watford, United Kingdom
| | - Nicholas Simmonds
- Adult Cystic Fibrosis Centre, Royal Brompton Hospital, London, SW3 6NP, United Kingdom.
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10
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Abstract
Clostridium difficile is the most frequent cause of nosocomial antibiotic-associated diarrhea. The incidence of C. difficile infection (CDI) has been rising worldwide with subsequent increases in morbidity, mortality, and health care costs. Asymptomatic colonization with C. difficile is common and a high prevalence has been found in specific cohorts, e.g., hospitalized patients, adults in nursing homes and in infants. However, the risk of infection with C. difficile differs significantly between these cohorts. While CDI is a clear indication for therapy, colonization with C. difficile is not believed to be a direct precursor for CDI and therefore does not require treatment. Antibiotic therapy causes alterations of the intestinal microbial composition, enabling C. difficile colonization and consecutive toxin production leading to disruption of the colonic epithelial cells. Clinical symptoms of CDI range from mild diarrhea to potentially life-threatening conditions like pseudomembranous colitis or toxic megacolon. While antibiotics are still the treatment of choice for CDI, new therapies have emerged in recent years such as antibodies against C. difficile toxin B and fecal microbial transfer (FMT). This specific therapy for CDI underscores the role of the indigenous bacterial composition in the prevention of the disease in healthy individuals and its role in the pathogenesis after alteration by antibiotic treatment. In addition to the pathogenesis of CDI, this review focuses on the colonization of C. difficile in the human gut and factors promoting CDI.
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Affiliation(s)
- Holger Schäffler
- Division of Gastroenterology, Department of Medicine II, University of Rostock, Rostock, Germany
| | - Anne Breitrück
- Extracorporeal Immunomodulation Unit, Fraunhofer Institute for Cell Therapy and Immunology, Rostock, Germany
- Institute of Medical Microbiology, Virology and Hygiene, University of Rostock, Rostock, Germany
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11
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Monaghan TM, Negm OH, MacKenzie B, Hamed MR, Shone CC, Humphreys DP, Acharya KR, Wilcox MH. High prevalence of subclass-specific binding and neutralizing antibodies against Clostridium difficile toxins in adult cystic fibrosis sera: possible mode of immunoprotection against symptomatic C. difficile infection. Clin Exp Gastroenterol 2017; 10:169-175. [PMID: 28765714 PMCID: PMC5525456 DOI: 10.2147/ceg.s133939] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Objectives Despite multiple risk factors and a high rate of colonization for Clostridium difficile, the occurrence of C. difficile infection in patients with cystic fibrosis is rare. The aim of this study was to compare the prevalence of binding C. difficile toxin-specific immunoglobulin (Ig)A, IgG and anti-toxin neutralizing antibodies in the sera of adults with cystic fibrosis, symptomatic C. difficile infection (without cystic fibrosis) and healthy controls. Methods Subclass-specific IgA and IgG responses to highly purified whole C. difficile toxins A and B (toxinotype 0, strain VPI 10463, ribotype 087), toxin B from a C. difficile toxin-B-only expressing strain (CCUG 20309) and precursor form of B fragment of binary toxin, pCDTb, were determined by protein microarray. Neutralizing antibodies to C. difficile toxins A and B were evaluated using a Caco-2 cell-based neutralization assay. Results Serum IgA anti-toxin A and B levels and neutralizing antibodies against toxin A were significantly higher in adult cystic fibrosis patients (n=16) compared with healthy controls (n=17) and patients with symptomatic C. difficile infection (n=16); p≤0.05. The same pattern of response prevailed for IgG, except that there was no difference in anti-toxin A IgG levels between the groups. Compared with healthy controls (toxins A and B) and patients with C. difficile infection (toxin A), sera from cystic fibrosis patients exhibited significantly stronger protective anti-toxin neutralizing antibody responses. Conclusion A superior ability to generate robust humoral immunity to C. difficile toxins in the cystic fibrosis population is likely to confer protection against symptomatic C. difficile infection. This protection may be lost in the post-transplantation setting, where sera monitoring of anti-C. difficile toxin antibody titers may be of clinical value.
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Affiliation(s)
- Tanya M Monaghan
- Nottingham Digestive Diseases Centre, NIHR Nottingham Digestive Diseases Biomedical Research Unit, School of Medicine, University of Nottingham, Nottingham
| | - Ola H Negm
- Breast Surgery Group, Division of Medical Sciences and Graduate Entry Medicine, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK.,Medical Microbiology and Immunology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | | | - Mohamed R Hamed
- Breast Surgery Group, Division of Medical Sciences and Graduate Entry Medicine, School of Medicine, Queen's Medical Centre, University of Nottingham, Nottingham, UK.,Medical Microbiology and Immunology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Clifford C Shone
- Toxins Group, National Infection Service, Public Health England, Salisbury, UK
| | | | - K Ravi Acharya
- Department of Biology and Biochemistry, University of Bath, Bath, UK
| | - Mark H Wilcox
- Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, UK
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12
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Simeunovic G, Sharma M, Riederer K, Khatib R. Relevance of indeterminate Clostridium difficile screening tests with detectable toxin genes: colonization or C. difficile disease? Infect Dis (Lond) 2017; 49:471-473. [DOI: 10.1080/23744235.2017.1279746] [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: 10/20/2022] Open
Affiliation(s)
- Gordana Simeunovic
- Department of Medicine, Ascension St John Hospital and Medical Center, Grosse Pointe Woods, MichiganMI, USA
| | - Mamta Sharma
- Department of Medicine, Ascension St John Hospital and Medical Center, Grosse Pointe Woods, MichiganMI, USA
| | - Kathleen Riederer
- Department of Medicine, Ascension St John Hospital and Medical Center, Grosse Pointe Woods, MichiganMI, USA
| | - Riad Khatib
- Department of Medicine, Ascension St John Hospital and Medical Center, Grosse Pointe Woods, MichiganMI, USA
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13
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Ronan NJ, Elborn JS, Plant BJ. Current and emerging comorbidities in cystic fibrosis. Presse Med 2017; 46:e125-e138. [PMID: 28554721 DOI: 10.1016/j.lpm.2017.05.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/09/2017] [Accepted: 05/09/2017] [Indexed: 01/09/2023] Open
Abstract
Cystic fibrosis transmembrane conductance regulator (CFTR) is expressed ubiquitously throughout the body. Thus, while respiratory manifestations dominate much of cystic fibrosis (CF) care, there are prominent multi-organ manifestations and comorbidities. In the general population, the number of comorbidities increases with aging. Few illnesses have experienced such a dramatic improvement in survival as CF, which has been transformed from an illness of childhood death to one of adult survival. Hence, as longevity increases in CF, it is paralleled by an increasing number of patients with multicomplex comorbidities availing of care from adult CF multi-disciplinary teams. This review gives an overview of the traditional CF associated comorbidities and those emerging in an aging adult cohort. While historically the treatment of CF focused on the consequences of CFTR dysfunction, the recent advent of CFTR modulators with the potential to enhance CFTR function represents an opportunity to potentially reverse or delay the development of some of the comorbidities associated with CF. Where evidence is available for the impact of CFTR modulatory therapy, namely ivacaftor on comorbidities in CF, this is highlighted.
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Affiliation(s)
- Nicola J Ronan
- Cork university hospital, university college Cork, Cork adult cystic fibrosis centre, HRB clinical research facility, Wilton,T12 DFK4 Cork, Ireland
| | - Joseph Stuart Elborn
- London and Queen's university Belfast, National heart and lung institute, Imperial College, Royal Brompton hospital, London, United Kingdom
| | - Barry J Plant
- Cork university hospital, university college Cork, Cork adult cystic fibrosis centre, HRB clinical research facility, Wilton,T12 DFK4 Cork, Ireland.
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14
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Burke DG, Harrison MJ, Fleming C, McCarthy M, Shortt C, Sulaiman I, Murphy DM, Eustace JA, Shanahan F, Hill C, Stanton C, Rea MC, Ross RP, Plant BJ. Clostridium difficile carriage in adult cystic fibrosis (CF); implications for patients with CF and the potential for transmission of nosocomial infection. J Cyst Fibros 2016; 16:291-298. [PMID: 27908697 DOI: 10.1016/j.jcf.2016.09.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 09/18/2016] [Accepted: 09/22/2016] [Indexed: 01/29/2023]
Abstract
Clostridium difficile is an anaerobic Gram-positive, spore-forming, toxin-producing bacillus transmitted among humans through the faecal-oral route. Despite increasing carriage rates and the presence of C. difficile toxin in stool, patients with CF rarely appear to develop typical manifestations of C. difficile infection (CDI). In this study, we examined the carriage, toxin production, ribotype distribution and antibiotic susceptibility of C. difficile in a cohort of 60 adult patients with CF who were pre-lung transplant. C. difficile was detected in 50% (30/60) of patients with CF by culturing for the bacteria. C. difficile toxin was detected in 63% (19/30) of C. difficile-positive stool samples. All toxin-positive stool samples contained toxigenic C. difficile strains harbouring toxin genes, tcdA and tcdB. Despite the presence of C. difficile and its toxin in patient stool, no acute gastrointestinal symptoms were reported. Ribotyping of C. difficile strains revealed 16 distinct ribotypes (RT), 11 of which are known to be disease-causing including the hyper-virulent RT078. Additionally, strains RT002, RT014, and RT015, which are common in non-CF nosocomial infection were described. All strains were susceptible to vancomycin, metronidazole, fusidic acid and rifampicin. No correlation was observed between carriage of C. difficile or any characteristics of isolated strains and any recorded clinical parameters or treatment received. We demonstrate a high prevalence of hypervirulent, toxigenic strains of C. difficile in asymptomatic patients with CF. This highlights the potential role of asymptomatic patients with CF in nosocomial transmission of C. difficile.
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Affiliation(s)
- D G Burke
- APC Microbiome Institute, University College Cork, Ireland
| | - M J Harrison
- Cork Adult CF Centre, Dept. of Respiratory Medicine, Cork University Hospital, University College Cork, Ireland
| | - C Fleming
- Cork Adult CF Centre, Dept. of Respiratory Medicine, Cork University Hospital, University College Cork, Ireland
| | - M McCarthy
- Cork Adult CF Centre, Dept. of Respiratory Medicine, Cork University Hospital, University College Cork, Ireland
| | - C Shortt
- Cork Adult CF Centre, Dept. of Respiratory Medicine, Cork University Hospital, University College Cork, Ireland
| | - I Sulaiman
- Dept. of Respiratory Medicine, Cork University Hospital, University College Cork, Ireland
| | - D M Murphy
- Cork Adult CF Centre, Dept. of Respiratory Medicine, Cork University Hospital, University College Cork, Ireland
| | - J A Eustace
- Health Research Board, Clinical Research Facility, University College Cork, Ireland
| | - F Shanahan
- APC Microbiome Institute, University College Cork, Ireland
| | - C Hill
- School of Microbiology, University College Cork, Ireland
| | - C Stanton
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - M C Rea
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - R P Ross
- APC Microbiome Institute, University College Cork, Ireland
| | - B J Plant
- Cork Adult CF Centre, Dept. of Medicine, Cork University Hospital, University College Cork, Ireland.
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15
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Pilate T, Verhaegen J, Van Ranst M, Saegeman V. Binary toxin and its clinical importance in Clostridium difficile infection, Belgium. Eur J Clin Microbiol Infect Dis 2016; 35:1741-1747. [PMID: 27393490 DOI: 10.1007/s10096-016-2719-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 06/27/2016] [Indexed: 12/18/2022]
Abstract
Binary toxin-producing Clostridium difficile strains such as ribotypes 027 and 078 have been associated with increased Clostridium difficile infection (CDI) severity. Our objective was to investigate the association between presence of the binary toxin gene and CDI severity and recurrence. We performed a laboratory-based retrospective study including patients between January 2013 and March 2015 whose fecal samples were analyzed by polymerase chain reaction (PCR) for the presence of the genes for toxin B and binary toxin and a deletion in the tcdC gene, specific for ribotype 027. Clinical and epidemiological characteristics were compared between 33 binary toxin-positive CDI patients and 33 binary toxin-negative CDI patients. Subsequently, the characteristics of 66 CDI patients were compared to those of 66 diarrhea patients who were carriers of non-toxigenic C. difficile strains. Fifty-nine of 1034 (5.7 %) fecal samples analyzed by PCR were binary toxin-positive, belonging to 33 different patients. No samples were positive for ribotype 027. Binary toxin-positive CDI patients did not differ from binary toxin-negative CDI patients in terms of disease recurrence, morbidity, or mortality, except for a higher peripheral leukocytosis in the binary toxin-positive group (16.30 × 109/L vs. 11.65 × 109/L; p = 0.02). The second part of our study showed that CDI patients had more severe disease, but not a higher 30-day mortality rate than diarrhea patients with a non-toxicogenic C. difficile strain. In our setting with a low prevalence of ribotype 027, the presence of the binary toxin gene is not associated with poor outcome.
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Affiliation(s)
- T Pilate
- Department of Laboratory Medicine, UH Leuven, Herestraat 49, Leuven, Belgium.
| | - J Verhaegen
- Department of Laboratory Medicine, UH Leuven, Herestraat 49, Leuven, Belgium
| | - M Van Ranst
- Department of Laboratory Medicine, UH Leuven, Herestraat 49, Leuven, Belgium
| | - V Saegeman
- Department of Laboratory Medicine, UH Leuven, Herestraat 49, Leuven, Belgium
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16
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Furuya-Kanamori L, Marquess J, Yakob L, Riley TV, Paterson DL, Foster NF, Huber CA, Clements ACA. Asymptomatic Clostridium difficile colonization: epidemiology and clinical implications. BMC Infect Dis 2015; 15:516. [PMID: 26573915 PMCID: PMC4647607 DOI: 10.1186/s12879-015-1258-4] [Citation(s) in RCA: 137] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 10/31/2015] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The epidemiology of Clostridium difficile infection (CDI) has changed over the past decades with the emergence of highly virulent strains. The role of asymptomatic C. difficile colonization as part of the clinical spectrum of CDI is complex because many risk factors are common to both disease and asymptomatic states. In this article, we review the role of asymptomatic C. difficile colonization in the progression to symptomatic CDI, describe the epidemiology of asymptomatic C. difficile colonization, assess the effectiveness of screening and intensive infection control practices for patients at risk of asymptomatic C. difficile colonization, and discuss the implications for clinical practice. METHODS A narrative review was performed in PubMed for articles published from January 1980 to February 2015 using search terms 'Clostridium difficile' and 'colonization' or 'colonisation' or 'carriage'. RESULTS There is no clear definition for asymptomatic CDI and the terms carriage and colonization are often used interchangeably. The prevalence of asymptomatic C. difficile colonization varies depending on a number of host, pathogen, and environmental factors; current estimates of asymptomatic colonization may be underestimated as stool culture is not practical in a clinical setting. CONCLUSIONS Asymptomatic C. difficile colonization presents challenging concepts in the overall picture of this disease and its management. Individuals who are colonized by the organism may acquire protection from progression to disease, however they also have the potential to contribute to transmission in healthcare settings.
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Affiliation(s)
- Luis Furuya-Kanamori
- Research School of Population Health, The Australian National University, Building 62 Mills Road, Canberra, ACT 2601, Australia.
| | - John Marquess
- School of Population Health, The University of Queensland, Herston, QLD, Australia.
- Queensland Department of Health, Communicable Diseases Unit, Herston, QLD, Australia.
| | - Laith Yakob
- Department of Disease Control, London School of Hygiene and Tropical Medicine, London, UK.
| | - Thomas V Riley
- Microbiology and Immunology, School of Pathology and Laboratory Medicine, The University of Western Australia, Nedlands, WA, Australia.
- PathWest Laboratory Medicine, Queen Elizabeth II Medical Centre, Nedlands, WA, Australia.
| | - David L Paterson
- The University of Queensland, UQ Centre for Clinical Research, Herston, QLD, Australia.
| | - Niki F Foster
- PathWest Laboratory Medicine, Queen Elizabeth II Medical Centre, Nedlands, WA, Australia.
| | - Charlotte A Huber
- The University of Queensland, UQ Centre for Clinical Research, Herston, QLD, Australia.
| | - Archie C A Clements
- Research School of Population Health, The Australian National University, Building 62 Mills Road, Canberra, ACT 2601, Australia.
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17
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Negm OH, Hamed MR, Dilnot EM, Shone CC, Marszalowska I, Lynch M, Loscher CE, Edwards LJ, Tighe PJ, Wilcox MH, Monaghan TM. Profiling Humoral Immune Responses to Clostridium difficile-Specific Antigens by Protein Microarray Analysis. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2015; 22:1033-9. [PMID: 26178385 PMCID: PMC4550668 DOI: 10.1128/cvi.00190-15] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Accepted: 07/02/2015] [Indexed: 01/05/2023]
Abstract
Clostridium difficile is an anaerobic, Gram-positive, and spore-forming bacterium that is the leading worldwide infective cause of hospital-acquired and antibiotic-associated diarrhea. Several studies have reported associations between humoral immunity and the clinical course of C. difficile infection (CDI). Host humoral immune responses are determined using conventional enzyme-linked immunosorbent assay (ELISA) techniques. Herein, we report the first use of a novel protein microarray assay to determine systemic IgG antibody responses against a panel of highly purified C. difficile-specific antigens, including native toxins A and B (TcdA and TcdB, respectively), recombinant fragments of toxins A and B (TxA4 and TxB4, respectively), ribotype-specific surface layer proteins (SLPs; 001, 002, 027), and control proteins (tetanus toxoid and Candida albicans). Microarrays were probed with sera from a total of 327 individuals with CDI, cystic fibrosis without diarrhea, and healthy controls. For all antigens, precision profiles demonstrated <10% coefficient of variation (CV). Significant correlation was observed between microarray and ELISA in the quantification of antitoxin A and antitoxin B IgG. These results indicate that microarray is a suitable assay for defining humoral immune responses to C. difficile protein antigens and may have potential advantages in throughput, convenience, and cost.
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Affiliation(s)
- Ola H Negm
- Immunology, School of Life Sciences, University of Nottingham, Nottingham, United Kingdom Medical Microbiology and Immunology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Mohamed R Hamed
- Immunology, School of Life Sciences, University of Nottingham, Nottingham, United Kingdom Medical Microbiology and Immunology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Elizabeth M Dilnot
- Immunology, School of Life Sciences, University of Nottingham, Nottingham, United Kingdom
| | | | | | - Mark Lynch
- Immunomodulation Research Group, Dublin City University, Dublin, Ireland
| | | | - Laura J Edwards
- Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, United Kingdom
| | - Patrick J Tighe
- Immunology, School of Life Sciences, University of Nottingham, Nottingham, United Kingdom
| | - Mark H Wilcox
- Leeds Institute for Molecular Medicine, University of Leeds, Leeds, United Kingdom
| | - Tanya M Monaghan
- NIHR Nottingham Digestive Diseases Biomedical Research Unit, Nottingham, United Kingdom
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18
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Management of pancreatic, gastrointestinal and liver complications in adult cystic fibrosis. Rev Mal Respir 2015; 32:566-85. [DOI: 10.1016/j.rmr.2014.12.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 12/09/2014] [Indexed: 01/27/2023]
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19
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Pant C, Sferra TJ, Deshpande A, Olyaee M, Gilroy R, Anderson MP, Donskey C. Clostridium difficile infection in hospitalized patients with cystic fibrosis. Infect Control Hosp Epidemiol 2014; 35:1547-8. [PMID: 25419780 DOI: 10.1086/678607] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Chaitanya Pant
- Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, University of Kansas Medical Center, Kansas City, Kansas
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