Subtopic Deep Dive
Immunology of Rhodococcus equi Infections
Research Guide
What is Immunology of Rhodococcus equi Infections?
Immunology of Rhodococcus equi infections studies innate and adaptive immune responses in foals against R. equi pneumonia, emphasizing neutrophil function, antibody production, and vaccine development.
Rhodococcus equi causes subacute bronchopneumonia in foals up to 3-5 months old due to age-dependent immune maturation (Meijer and Prescott, 2004, 107 citations). Research focuses on hyperimmune plasma, inactivated vaccines, and microbiome influences on susceptibility. Over 10 key papers since 1993 document immunological failures and immunotherapy trials.
Why It Matters
Insights from foal immunology guide prevention of R. equi pneumonia, a major cause of equine mortality (Meijer and Prescott, 2004). Hyperimmune plasma administration reduces disease incidence in vulnerable neonates (Erganis et al., 2014). Vaccine trials with electron-beam inactivated R. equi enhance antibody responses, informing immunotherapy for immunocompromised humans (Bordin et al., 2014; Gundelly et al., 2016). These findings shape breeding and neonatal care protocols in veterinary practice.
Key Research Challenges
Vaccine Efficacy Failure
Oral electron-beam inactivated R. equi fails to protect foals against live challenge despite immunogenicity (Rocha et al., 2016, 26 citations). Age-related immune maturation limits neonatal responses (Bordin et al., 2014). Adjuvanted vaccines show partial protection via mare immunization (Erganis et al., 2014).
Immune Status Variability
Differences in R. equi infections correlate with host immune status and isolate susceptibility (Gundelly et al., 2016, 33 citations). Foal susceptibility ties to failure of passive antibody transfer. Microbiome composition does not predict pneumonia risk (Whitfield-Cargile et al., 2015).
Neutrophil Dysfunction
Neutrophil impairment contributes to abscessating pneumonia in foals (Meijer and Prescott, 2004, 107 citations). Mycolata cell wall evades innate responses similar to Mycobacterium tuberculosis. Antibody production via hyperimmune plasma addresses this gap (Erganis et al., 2014).
Essential Papers
<i>Rhodococcus equi</i>
Wim G. Meijer, John F. Prescott · 2004 · Veterinary Research · 107 citations
Rhodococcus equi is an important cause of subacute or chronic abscessating bronchopneumonia of foals up to 3-5 months of age. It shares the lipid-rich cell wall envelope characteristic of the mycol...
<i>Rhodococcus equi</i> and <i>Arcanobacterium haemolyticum</i>: Two "Coryneform" Bacteria Increasingly Recognized as Agents of Human Infection
Regina Linder · 1997 · Emerging infectious diseases · 93 citations
Rhodococcus equi and Arcanobacterium haemolyticum, formerly classified in the genus Corynebacterium, are members of the loosely defined taxon "coryneform" bacteria. Although they are the etiologic ...
Rhodococcus Equi
John F. Prescott, Andrew M. Hoffman · 1993 · Veterinary Clinics of North America Equine Practice · 35 citations
Differences in<i>Rhodococcus equi</i>Infections Based on Immune Status and Antibiotic Susceptibility of Clinical Isolates in a Case Series of 12 Patients and Cases in the Literature
Praveen Gundelly, Yasuhiro Suzuki, Julie A. Ribes et al. · 2016 · BioMed Research International · 33 citations
Rhodococcus equi is an unusual zoonotic pathogen that can cause life-threatening diseases in susceptible hosts. Twelve patients with R. equi infection in Kentucky were compared to 137 cases reporte...
Effects of Administration of Live or Inactivated Virulent Rhodococccus equi and Age on the Fecal Microbiome of Neonatal Foals
Angela I. Bordin, Jan S. Suchodolski, Melissa E. Markel et al. · 2013 · PLoS ONE · 27 citations
The results suggest age-related changes in the fecal microbial population of healthy foals do occur, however, mucosal vaccination does not result in major changes of the fecal microbiome in foals.
Pyogranulomatous skin disease and cellulitis in a cat caused by <i>Rhodococcus equi</i>
Anita Patel · 2002 · Journal of Small Animal Practice · 26 citations
This report describes a case of Rhodococcus equi infection causing pyogranulomatous skin disease and cellulitis in a two‐year‐old female domestic shorthaired cat. The case differed from previously ...
Oral Administration of Electron-Beam Inactivated Rhodococcus equi Failed to Protect Foals against Intrabronchial Infection with Live, Virulent R. equi
Joana N. Rocha, Noah D. Cohen, Angela I. Bordin et al. · 2016 · PLoS ONE · 26 citations
There is currently no licensed vaccine that protects foals against Rhodococcus equi-induced pneumonia. Oral administration of live, virulent R. equi to neonatal foals has been demonstrated to prote...
Reading Guide
Foundational Papers
Start with Meijer and Prescott (2004, 107 citations) for R. equi pathogenesis in foals, then Prescott and Hoffman (1993, 35 citations) for clinical immunology overview.
Recent Advances
Study Bordin et al. (2014, 25 citations) on eBeam vaccine immunogenicity and Rocha et al. (2016, 26 citations) on protection failures.
Core Methods
Core techniques: hyperimmune plasma from vaccinated mares (Erganis et al., 2014), microbiome 16S sequencing (Bordin et al., 2013), electron-beam inactivation (Rocha et al., 2016).
How PapersFlow Helps You Research Immunology of Rhodococcus equi Infections
Discover & Search
Research Agent uses searchPapers and citationGraph on 'Rhodococcus equi foal immunology' to map 107-citation foundational work by Meijer and Prescott (2004), then findSimilarPapers reveals vaccine trials like Rocha et al. (2016). exaSearch uncovers human-foal immune parallels in Gundelly et al. (2016).
Analyze & Verify
Analysis Agent applies readPaperContent to extract vaccine failure data from Rocha et al. (2016), verifies claims with CoVe against Meijer and Prescott (2004), and runs PythonAnalysis on citation networks or microbiome datasets from Bordin et al. (2013) for GRADE evidence grading on immunogenicity.
Synthesize & Write
Synthesis Agent detects gaps in neonatal vaccine protection from Rocha et al. (2016) and Bordin et al. (2014), flags contradictions in microbiome predictors (Whitfield-Cargile et al., 2015). Writing Agent uses latexEditText, latexSyncCitations for hyperimmune plasma reviews, and latexCompile for immunology diagrams via exportMermaid.
Use Cases
"Analyze microbiome data from foal R. equi studies for pneumonia predictors"
Research Agent → searchPapers (Bordin 2013, Whitfield-Cargile 2015) → Analysis Agent → runPythonAnalysis (pandas on fecal microbiome datasets) → statistical output with p-values and GRADE scores.
"Write LaTeX review on R. equi vaccine trials in foals"
Synthesis Agent → gap detection (Rocha 2016 vs Erganis 2014) → Writing Agent → latexEditText + latexSyncCitations (10 papers) → latexCompile → formatted PDF with citation graph.
"Find code for R. equi immunogenicity simulations"
Research Agent → paperExtractUrls (Bordin 2014) → Code Discovery → paperFindGithubRepo → githubRepoInspect → Python scripts for antibody response modeling.
Automated Workflows
Deep Research workflow scans 50+ R. equi papers via searchPapers → citationGraph → structured report on immunology gaps (Meijer 2004 to Rocha 2016). DeepScan applies 7-step CoVe to verify vaccine claims in Erganis et al. (2014) with GRADE checkpoints. Theorizer generates hypotheses on neutrophil-vaccine synergies from foal trials.
Frequently Asked Questions
What defines immunology of Rhodococcus equi infections?
It examines innate neutrophil responses and adaptive antibody production in foals against R. equi pneumonia, linked to age-dependent susceptibility (Meijer and Prescott, 2004).
What are key methods in R. equi immunology research?
Methods include hyperimmune plasma transfer (Erganis et al., 2014), electron-beam inactivation for vaccines (Bordin et al., 2014), and fecal microbiome sequencing (Bordin et al., 2013).
What are the most cited papers?
Top papers are Meijer and Prescott (2004, 107 citations) on foal pneumonia, Linder (1997, 93 citations) on human infections, and Prescott and Hoffman (1993, 35 citations).
What open problems remain?
Challenges include no licensed foal vaccine, oral vaccine failures (Rocha et al., 2016), and unpredictable microbiome roles in susceptibility (Whitfield-Cargile et al., 2015).
Research Infectious Disease Case Reports and Treatments with AI
PapersFlow provides specialized AI tools for Medicine researchers. Here are the most relevant for this topic:
Systematic Review
AI-powered evidence synthesis with documented search strategies
AI Literature Review
Automate paper discovery and synthesis across 474M+ papers
Find Disagreement
Discover conflicting findings and counter-evidence
Paper Summarizer
Get structured summaries of any paper in seconds
See how researchers in Health & Medicine use PapersFlow
Field-specific workflows, example queries, and use cases.
Start Researching Immunology of Rhodococcus equi Infections with AI
Search 474M+ papers, run AI-powered literature reviews, and write with integrated citations — all in one workspace.
See how PapersFlow works for Medicine researchers