Prior Antibiotic Exposure Is Associated With Reoperation After Elective Non-colorectal Surgery
Among Veterans, recent antibiotic exposure within 90 days of elective surgery was associated with a 39% increase in the odds of return to the operating room. Further work is needed to evaluate the effects of antibiotic exposure and dysbiosis on surgical outcomes.
Reconsidering the in vivo functions of Clostridial Stickland amino acid fermentations
Stickland amino acid fermentations occur primarily among species of Clostridia. An ancient form of metabolism, Stickland fermentations use amino acids as electron acceptors in the absence of stronger oxidizing agents and provide metabolic capabilities to support growth when other fermentable substra …
Incidence of Early and Late-Onset Clostridioides difficile Infection following Appendectomy Compared to Other Common Abdominal Surgical Procedures
The incidence of CDAD after various abdominal surgeries ranged between 2% and 7% in this study. Whereas, hemicolectomy patients had predominantly early onset CDAD, and appendectomy and cholecystectomy may increase the risk for late-onset CDAD. Appendectomy per se does not seem to increase the risk f …
Clostridioides difficile Infection in Liver Cirrhosis: A Concise Review
Clostridium difficile is a Gram-positive bacillus with fecal-oral transmission and is currently one of the most common nosocomial infections worldwide, which was renamed Clostridioides difficile in 2016. Clostridioides difficile infection (CDI) is a prevalent infection in cirrho …
Rapid Quantification of C. difficile Glutamate Dehydrogenase and Toxin B (TcdB) with a NanoBiT Split-Luciferase Assay
C. difficile infection (CDI) is a leading healthcare-associated infection with a high morbidity and mortality and is a financial burden. No current standalone point-of-care test (POCT) is sufficient for the identification of true CDI over a disease-free carriage of C. difficile, so one …
Clostridioides difficile infection in paediatric patients with cancer and haematopoietic stem cell transplant recipients - PubMed
The prevalence of clinical cure was 82.9% and recurrence was 9.6% in pediatric patients receiving cancer treatments. Severe CDI, as per our proposed definition, occurred in 9.7% episodes. Initial oral vancomycin was significantly associated with a reduction in repeated new CDI episodes.
Mapping of etiologies of computed tomography-proven acute colitis: a prospective cohort study - PubMed
Our objective was to describe the etiologies of acute colitis and to identify patients who require diagnostic endoscopy. Patients with symptoms of gastrointestinal infection and colonic inflammation on CT were prospectively included. Those immunosuppressed, with history of colorectal cancer or infla …
The Alternative Sigma Factor SigL Influences Clostridioides difficile Toxin Production, Sporulation, and Cell Surface Properties
The alternative sigma factor SigL (Sigma-54) facilitates bacterial adaptation to the extracellular environment by modulating the expression of defined gene subsets. A homolog of the gene encoding SigL is conserved in the diarrheagenic pathogen Clostridioides difficile. To explore the contribu …
Impact of Primary and Secondary Bile Acids on Clostridioides difficile Infection
Primary bile acids (BAs), synthesized from cholesterol in the liver, after their secretion with bile into the intestinal lumen, are transformed by gut microbiota to secondary BAs. As natural detergents, BAs play a key role in the digestion and absorption of lipids and liposoluble vitamins. However, …
Structure of the glucosyltransferase domain of TcdA in complex with RhoA provides insights into substrate recognition
Clostridioides difficile is one of the most common causes of antibiotic-associated diarrhea in developed countries. As key virulence factors of C. difficile, toxin A (TcdA) and toxin B (TcdB) act by glucosylating and inactivating Rho and Ras family small GTPases in host cells, which leads to actin c …
Association between Nutrition Protocol with Clostridium butyricum MIYAIRI 588 and Reduced Incidence of Clostridioides difficile Infection in Critically Ill Patients: A Single-Center, Before-and-After Study
Background: Clostridioides difficile infection (CDI) is associated with high mortality. Clostridium butyricum MIYAIRI 588 (CBM) is a probiotic that suppresses Clostridioides difficile proliferation. We assessed the effect of a prophylactic nutritional protocol with …
Gut metabolites predict Clostridioides difficile recurrence
The prospective, longitudinal, and multi-omic nature of our CDI recurrence study allowed us to uncover previously unrecognized dynamics in the microbiome and host presaging recurrence, and, in particular, to elucidate changes in the understudied gut metabolome. Moreover, we demonstrated that a small …
Transcriptomic analysis of the ΔPaLoc mutant of Clostridioides difficile and verification of its toxicity
Objective: Comparative analyses of wild-type Clostridioides difficile 630 (Cd630) strain and pathogenicity locus (PaLoc) knockout mutant (ΔPaLoc) by using RNA-seq technology. Analysis of differential expression of Cd630 wild-type strain and ΔPaLoc mutant strain and measurement of its c …
Houston, We Have a Problem: Reports of Clostridioides difficile Isolates with Reduced Vancomycin Susceptibility
During the past 4 decades, oral vancomycin has been a mainstay of Clostridioides difficile infection (CDI) therapy with no reports of treatment failure due to emergence of vancomycin resistance. However, C. difficile isolates with high-level phenotypic resistance to vancomycin have recently been rep …
Metagenomic assembled plasmids of the human microbiome vary across disease cohorts
We compiled a human metagenome assembled plasmid (MAP) database and interrogated differences across multiple studies that were originally designed to investigate the composition of the human microbiome across various lifestyles, life stages and events. This was performed as plasmids enable bacteria …
Gut microbial metabolome in inflammatory bowel disease: From association to therapeutic perspectives
Inflammatory bowel disease (IBD), comprising Crohn's disease (CD) and ulcerative colitis (UC), is a set of clinically chronic, relapsing gastrointestinal inflammatory disease and lacks of an absolute cure. Although the precise etiology is unknown, developments in high-throughput microbial genomic se …
Establishment of a gnotobiotic pig model of Clostridioides difficile infection and disease
Clostridioides difficile (C. difficile) is a gram-positive, spore-forming, anaerobic bacterium known to be the most common cause of hospital-acquired and antibiotic-associated diarrhea. C. difficile infection rates are on the rise worldwide and treatment options are limited, indicating a clear need …
Molecular Epidemiology and Genetic Relatedness of Clostridioides difficile Isolates in Pediatric Oncology and Transplant Patients using Whole Genome Sequencing
WGS identified a highly diverse group of C. difficile isolates among POTP with CDI. Although WGS identified clusters of closely related isolates in multiple patients, epidemiologic investigation of shared inpatient exposures identified potential transmission in only two clusters. C. difficile transm …
Hospitalization with Clostridioides difficile in pediatric inflammatory bowel disease: a population-based study
Children with IBD have a markedly higher incidence of CDI identified during a hospitalization relative to children without IBD. Consequently, symptomatic children with IBD who are hospitalized should be screened for CDI.An infographic is available for this article at: http://links.lww.com/MPG/C842.
Human colon cancer-derived Clostridioides difficile strains drive colonic tumorigenesis in mice
Defining the complex role of the microbiome in colorectal cancer (CRC) and the discovery of novel, pro-tumorigenic microbes are areas of active investigation. In the present study, culturing and reassociation experiments revealed that toxigenic strains of Clostridioides difficile drove the tumorigen …
Host gut resistome in Gulf War chronic multisymptom illness correlates with persistent inflammation | Communications Biology - Nature.com
Communications Biology - Analysis of fecal samples from patients and mice, shows that chronic multisymptom illness which affects a subsection of elderly and war Veterans, is associated with...
Seres Therapeutics Presents Microbiome Therapeutic Research at the 2022 American Society of Clinical Oncology (ASCO) Annual Meeting - Yahoo Finance
CAMBRIDGE, Mass., June 01, 2022--Seres Therapeutics, Inc. (Nasdaq: MCRB), a leading microbiome therapeutics company, announced the presentation of preclinical data supporting further investigation of a rationally designed microbial consortium candidate (DE486) to prevent or treat gastrointestinal (GI) mucositis – a common and often painful complication of radiation and chemotherapy involving the breakdown of the rapidly-dividing epithelial cells lining the GI tract. These results are available o