Subtopic Deep Dive
Clostridium perfringens Enterotoxin Pathogenesis
Research Guide
What is Clostridium perfringens Enterotoxin Pathogenesis?
Clostridium perfringens enterotoxin (CPE) pathogenesis involves the mechanisms by which CPE causes foodborne gastroenteritis through receptor binding, membrane pore formation, and intestinal epithelial damage.
CPE, encoded by the cpe gene, forms oligomers on host cell membranes leading to cytotoxicity. Research examines cpe-positive strains' virulence in type A food poisoning (Sarker et al., 1999, 234 citations). Over 200 papers detail toxin genetics and action (Freedman et al., 2016, 207 citations; Navarro et al., 2018, 208 citations).
Why It Matters
CPE causes 1 million annual U.S. food poisoning cases, informing outbreak prevention and food safety regulations. Vaccine development targets CPE receptors for strain-specific immunity (McClane et al., 2016). Strain typing schemes guide epidemiological tracking of outbreaks (Rood et al., 2018, 573 citations). Research supports therapeutic inactivation of cpe-positive isolates (Sarker et al., 1999).
Key Research Challenges
CPE Receptor Heterogeneity
CPE binds multiple receptors like claudins, complicating broad-spectrum inhibitors. Strain-specific receptor preferences affect virulence prediction (Freedman et al., 2016). Developing universal antagonists remains unsolved (Navarro et al., 2018).
cpe Gene Location Variability
cpe on chromosome or plasmid alters sporulation and toxin production stability. Genomic plasticity hinders vaccine design (Myers et al., 2006, 319 citations). Typing schemes struggle with emerging variants (Rood et al., 2018).
Intestinal Damage Modeling
Rabbit ileal loop assays confirm CPE's role but lack human relevance (Sarker et al., 1999). Translating pore-formation mechanisms to clinical outcomes requires advanced models (Navarro et al., 2018).
Essential Papers
Expansion of the Clostridium perfringens toxin-based typing scheme
Julian I. Rood, Vicki Adams, Jake A. Lacey et al. · 2018 · Anaerobe · 573 citations
The Fecal Microbiome in Dogs with Acute Diarrhea and Idiopathic Inflammatory Bowel Disease
Jan S. Suchodolski, Melissa E. Markel, José F. García-Mazcorro et al. · 2012 · PLoS ONE · 436 citations
Recent molecular studies have revealed a highly complex bacterial assembly in the canine intestinal tract. There is mounting evidence that microbes play an important role in the pathogenesis of acu...
An update on the human and animal enteric pathogen <i>Clostridium perfringens</i>
Raymond Kiu, Lindsay J. Hall · 2018 · Emerging Microbes & Infections · 418 citations
<i>Clostridium perfringens</i>, a rapid-growing pathogen known to secrete an arsenal of >20 virulent toxins, has been associated with intestinal diseases in both animals and humans throughout th...
Skewed genomic variability in strains of the toxigenic bacterial pathogen, <i>Clostridium perfringens</i>
Garry S. A. Myers, David A. Rasko, Jackie K. Cheung et al. · 2006 · Genome Research · 319 citations
Clostridium perfringens is a Gram-positive, anaerobic spore-forming bacterium commonly found in soil, sediments, and the human gastrointestinal tract. C. perfringens is responsible for a wide spect...
Role of the gut microbiota in anticancer therapy: from molecular mechanisms to clinical applications
Lin-Yong Zhao, Jia-Xin Mei, Gang Yu et al. · 2023 · Signal Transduction and Targeted Therapy · 279 citations
Abstract In the past period, due to the rapid development of next-generation sequencing technology, accumulating evidence has clarified the complex role of the human microbiota in the development o...
Global Analysis of the Sporulation Pathway of Clostridium difficile
Kelly A. Fimlaid, Jeffrey P. Bond, Kristin C. Schutz et al. · 2013 · PLoS Genetics · 236 citations
The Gram-positive, spore-forming pathogen Clostridium difficile is the leading definable cause of healthcare-associated diarrhea worldwide. C. difficile infections are difficult to treat because of...
Inactivation of the gene (<i>cpe</i> ) encoding <i>Clostridium perfringens</i> enterotoxin eliminates the ability of two <i>cpe</i>‐positive <i>C. perfringens</i> type A human gastrointestinal disease isolates to affect rabbit ileal loops
Mahfuzur R. Sarker, Robert J. Carman, Bruce A. McClane · 1999 · Molecular Microbiology · 234 citations
Previous epidemiological studies have implicated Clostridium perfringens enterotoxin (CPE) as a virulence factor in the pathogenesis of several gastrointestinal (GI) illnesses caused by C. perfring...
Reading Guide
Foundational Papers
Start with Sarker et al. (1999, 234 citations) for cpe knockout proving enterotoxin necessity; Myers et al. (2006, 319 citations) for genomic basis of strain variability.
Recent Advances
Rood et al. (2018, 573 citations) for expanded toxin typing; Navarro et al. (2018, 208 citations) and Freedman et al. (2016, 207 citations) for updated mechanisms and applications.
Core Methods
cpe mutagenesis (Sarker et al., 1999); whole-genome sequencing (Myers et al., 2006); toxin binding assays and rabbit ileal loops (Navarro et al., 2018).
How PapersFlow Helps You Research Clostridium perfringens Enterotoxin Pathogenesis
Discover & Search
Research Agent uses searchPapers('Clostridium perfringens enterotoxin pathogenesis') to retrieve 250+ OpenAlex papers, then citationGraph on Rood et al. (2018) maps toxin-typing connections, and findSimilarPapers expands to 50 related works like Navarro et al. (2018). exaSearch queries 'CPE receptor claudin interactions' for latest preprints.
Analyze & Verify
Analysis Agent applies readPaperContent on Freedman et al. (2016) to extract CPE genetics details, verifyResponse with CoVe cross-checks claims against Sarker et al. (1999), and runPythonAnalysis parses toxin sequence alignments from Myers et al. (2006) for phylogenetic trees. GRADE grading scores evidence strength for receptor binding claims.
Synthesize & Write
Synthesis Agent detects gaps in CPE vaccine trials via contradiction flagging across Navarro et al. (2018) and Rood et al. (2018), while Writing Agent uses latexEditText for pathogenesis reviews, latexSyncCitations integrates 20+ references, and latexCompile generates polished manuscripts. exportMermaid visualizes toxin-receptor interaction diagrams.
Use Cases
"Analyze CPE sequence variability across strains for vaccine targets"
Research Agent → searchPapers('cpe gene Clostridium perfringens') → Analysis Agent → runPythonAnalysis (pandas/NumPy on Myers et al. 2006 FASTA data) → phylogenetic tree plot and conserved epitope table.
"Draft LaTeX review on CPE pore formation mechanisms"
Synthesis Agent → gap detection (Navarro et al. 2018 + Freedman et al. 2016) → Writing Agent → latexEditText (structure sections) → latexSyncCitations (20 papers) → latexCompile → camera-ready PDF with figures.
"Find open-source code for CPE toxin modeling"
Research Agent → paperExtractUrls (Sarker et al. 1999) → paperFindGithubRepo → githubRepoInspect → executable molecular dynamics simulation for pore formation.
Automated Workflows
Deep Research workflow scans 50+ CPE papers via searchPapers → citationGraph → structured report on pathogenesis gaps (Rood et al. 2018 as seed). DeepScan applies 7-step CoVe analysis to verify toxin-receptor claims in Navarro et al. (2018) with GRADE checkpoints. Theorizer generates hypotheses on cpe plasmid evolution from Myers et al. (2006) genomic data.
Frequently Asked Questions
What defines Clostridium perfringens enterotoxin pathogenesis?
CPE pathogenesis centers on toxin binding to claudin receptors, oligomerization, and pore-induced cytolysis causing gastroenteritis (Freedman et al., 2016).
What are key methods in CPE research?
Rabbit ileal loop assays test virulence (Sarker et al., 1999); genomic sequencing maps cpe location (Myers et al., 2006); toxin overlay assays identify receptors (Navarro et al., 2018).
What are pivotal papers on CPE?
Sarker et al. (1999, 234 citations) proved cpe inactivation abolishes pathogenicity; Freedman et al. (2016, 207 citations) detailed genetics; Navarro et al. (2018, 208 citations) reviewed mechanisms.
What open problems exist in CPE pathogenesis?
Challenges include modeling human-specific damage, countering plasmid-borne cpe variability, and developing receptor-targeted vaccines (Rood et al., 2018).
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