Type

Journal Article

Authors

Colin Hill
R Paul Ross
Catherine Stanton
Paul W O’ Toole
Fergus Shanahan
Orla O'Sullivan
Mary C. Rea

Subjects

Microbiology

Topics
clostridium difficile female aged 80 and over genetics microbiology gastrointestinal tract biodiversity classification male isolation purification sequence analysis dna clostridium infections aged epidemiology humans feces ribotyping carrier state metagenome prevalence

Clostridium difficile carriage in elderly subjects and associated changes in the intestinal microbiota. (2011)

Abstract Clostridium difficile is an important nosocomial pathogen associated particularly with diarrheal disease in elderly individuals in hospitals and long-term care facilities. We examined the carriage rate of Clostridium difficile by culture as a function of fecal microbiota composition in elderly subjects recruited from the community, including outpatient, short-term respite, and long-term hospital stay subjects. The carriage rate ranged from 1.6% (n = 123) for subjects in the community, to 9.5% (n = 43) in outpatient settings, and increasing to 21% (n = 151) for patients in short- or long-term care in hospital. The dominant 072 ribotype was carried by 43% (12/28) of subjects, while the hypervirulent strain R027 (B1/NAP1/027) was isolated from 3 subjects (11%), 2 of whom displayed C. difficile associated diarrhea (CDAD) symptoms at the time of sampling. Emerging ribotypes with enhanced virulence (078 and 018) were also isolated from two asymptomatic subjects. Pyrosequencing of rRNA gene amplicons was used to determine the composition of the fecal microbiota as a surrogate for the microbial population structure of the distal intestine. Asymptomatic subjects (n = 20) from whom C. difficile was isolated showed no dramatic difference at the phylum or family taxonomic level compared to those that were culture negative (n = 252). However, in contrast, a marked reduction in microbial diversity at genus level was observed in patients who had been diagnosed with CDAD at the time of sampling and from whom C. difficile R027 was isolated.
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Full list of authors on original publication

Colin Hill, R Paul Ross, Catherine Stanton, Paul W O’ Toole, Fergus Shanahan, Orla O'Sullivan, Mary C. Rea

Experts in our system

1
Colin Hill
University College Cork
Total Publications: 351
 
2
R Paul Ross
Teagasc
Total Publications: 441
 
3
Catherine Stanton
Teagasc
Total Publications: 261
 
4
Paul W O’ Toole
University College Cork
Total Publications: 92
 
5
Fergus Shanahan
University College Cork
Total Publications: 237
 
6
Orla O'Sullivan
Teagasc
Total Publications: 92
 
7
Mary C. Rea
Teagasc
Total Publications: 68