Subtopic Deep Dive
Bartonella Molecular Diagnostic Methods
Research Guide
What is Bartonella Molecular Diagnostic Methods?
Bartonella Molecular Diagnostic Methods encompass PCR-based assays targeting species-specific genes like its, pap31, rpoB, and gltA for detecting Bartonella DNA in blood, tissues, fleas, and vectors.
These methods enable identification of Bartonella henselae, B. quintana, B. clarridgeiae, and B. koehlerae from clinical samples where culture fails (Rolain et al., 2003). PCR primers for its and pap31 genes detected multiple Bartonella species in 309 cat fleas from France with high specificity (Rolain et al., 2003; 316 citations). Research highlights superior sensitivity of molecular detection over serology in zoonotic infections (Chomel et al., 2006; 438 citations).
Why It Matters
Molecular diagnostics identify Bartonella in pets as zoonotic reservoirs, enabling early human infection control (Chomel et al., 2006). PCR assays confirm vector transmission roles of fleas and ticks, informing public health surveillance (Rolain et al., 2003; Billeter et al., 2008). Detection in endocarditis cases improves treatment outcomes where culture yields are low (Fournier et al., 2001). These methods support epidemiological tracking of emerging infections in veterinarians and immunocompromised patients (Maggi et al., 2013).
Key Research Challenges
Low Bacteremia Detection Limits
Bartonella persists at low levels in blood, reducing PCR sensitivity from clinical samples (Breitschwerdt et al., 2008). Enrichment culture prior to PCR improves yields but delays diagnosis (Maggi et al., 2013). Studies report variable detection in tissues versus blood (Chomel et al., 2006).
Primer Cross-Reactivity Risks
ITS and pap31 primers detect multiple species but risk co-infection confusion with Rickettsia or Anaplasma (Rolain et al., 2003). Sequencing confirms identity, yet high-throughput screening needs species-specific optimization (Michelet et al., 2014). Validation across vectors like fleas and ticks remains inconsistent (Billeter et al., 2008).
Sample Inhibition in PCR
Blood and tissue matrices inhibit amplification, requiring DNA extraction optimization (Boulouis et al., 2005). Nested PCR enhances sensitivity but increases contamination risk (Cotté et al., 2008). Real-time qPCR standardization lags for diverse Bartonella species (Stuen et al., 2013).
Essential Papers
Anaplasma phagocytophilum—a widespread multi-host pathogen with highly adaptive strategies
Snorre Stuen, Erik G. Granquist, Cornelia Silaghi · 2013 · Frontiers in Cellular and Infection Microbiology · 580 citations
The bacterium Anaplasma phagocytophilum has for decades been known to cause the disease tick-borne fever (TBF) in domestic ruminants in Ixodes ricinus-infested areas in northern Europe. In recent y...
<i>Bartonella</i>Spp. in Pets and Effect on Human Health
Bruno B. Chomel, Henri‐Jean Boulouis, Soichi Maruyama et al. · 2006 · Emerging infectious diseases · 438 citations
Among the many mammals infected with Bartonella spp., pets represent a large reservoir for human infection because most Bartonella spp. infecting them are zoonotic. Cats are the main reservoir for ...
Factors associated with the rapid emergence of zoonotic <i>Bartonella</i> infections
Henri‐Jean Boulouis, Chao‐Chin Chang, Jennifer B. Henn et al. · 2005 · Veterinary Research · 357 citations
Within the last 15 years, several bacteria of the genus Bartonella were recognized as zoonotic agents in humans and isolated from various mammalian reservoirs. Based on either isolation of the bact...
Molecular Detection of<i>Bartonella quintana</i>,<i>B. koehlerae, B. henselae, B. clarridgeiae, Rickettsia felis</i>, and<i>Wolbachia pipientis</i>in Cat Fleas, France
Jean‐Marc Rolain, Michel Franc, Bernard Davoust et al. · 2003 · Emerging infectious diseases · 316 citations
The prevalences of Bartonella, Rickettsia, and Wolbachia were investigated in 309 cat fleas from France by polymerase chain reaction (PCR) assay and sequencing with primers derived from the gltA ge...
Vector transmission of <i>Bartonella</i> species with emphasis on the potential for tick transmission
Sarah A. Billeter, M. G. Levy, Bruno B. Chomel et al. · 2008 · Medical and Veterinary Entomology · 301 citations
Abstract Bartonella species are gram‐negative bacteria that infect erythrocytes, endothelial cells and macrophages, often leading to persistent blood‐borne infections. Because of the ability of var...
High-throughput screening of tick-borne pathogens in Europe
Lorraine Michelet, Sabine Delannoy, Elodie Devillers et al. · 2014 · Frontiers in Cellular and Infection Microbiology · 299 citations
Due to increased travel, climatic, and environmental changes, the incidence of tick-borne disease in both humans and animals is increasing throughout Europe. Therefore, extended surveillance tools ...
Ecological fitness and strategies of adaptation of<i>Bartonella</i>species to their hosts and vectors
Bruno B. Chomel, Henri-Jean Boulouis, Edward B. Breitschwerdt et al. · 2009 · Veterinary Research · 278 citations
Bartonella spp. are facultative intracellular bacteria that cause characteristic hostrestricted hemotropic infections in mammals and are typically transmitted by blood-sucking arthropods. In the ma...
Reading Guide
Foundational Papers
Start with Chomel et al. (2006; 438 citations) for zoonotic context and PCR role; Rolain et al. (2003; 316 citations) for primer methods in vectors; Boulouis et al. (2005; 357 citations) for emergence factors requiring molecular tools.
Recent Advances
Maggi et al. (2013; 257 citations) on co-infection PCR; Michelet et al. (2014; 299 citations) for high-throughput tick screening; Cotté et al. (2008; 254 citations) on tick transmission validation.
Core Methods
Real-time PCR on its/pap31/gltA; nested PCR for sensitivity; sequencing for confirmation; pre-PCR enrichment for blood (Rolain 2003; Maggi 2013).
How PapersFlow Helps You Research Bartonella Molecular Diagnostic Methods
Discover & Search
Research Agent uses searchPapers('Bartonella PCR diagnostics its pap31') to retrieve Rolain et al. (2003), then citationGraph reveals Boulouis et al. (2005; 357 citations) and Chomel et al. (2006; 438 citations) as high-impact clusters. exaSearch('Bartonella molecular detection fleas ticks') surfaces vector papers like Billeter et al. (2008), while findSimilarPapers on Maggi et al. (2013) uncovers co-infection diagnostics.
Analyze & Verify
Analysis Agent applies readPaperContent on Rolain et al. (2003) to extract PCR primer sequences for its/pap31, then verifyResponse with CoVe cross-checks sensitivity claims against Chomel et al. (2006). runPythonAnalysis parses prevalence data from Michelet et al. (2014) into pandas for statistical comparison of PCR yields across tick samples, graded via GRADE for evidence quality in diagnostic accuracy.
Synthesize & Write
Synthesis Agent detects gaps in qPCR validation for B. koehlerae via contradiction flagging between Rolain et al. (2003) and recent co-infection reports, then exportMermaid diagrams PCR workflow comparisons. Writing Agent uses latexEditText to draft methods section, latexSyncCitations integrates 10+ papers like Fournier et al. (2001), and latexCompile generates a diagnostic protocol PDF.
Use Cases
"Analyze PCR sensitivity data from cat flea studies for Bartonella henselae"
Research Agent → searchPapers → Analysis Agent → runPythonAnalysis (pandas on Rolain et al. 2003 prevalence tables) → matplotlib prevalence plot and statistical t-test output comparing its vs pap31 primers.
"Write LaTeX review of Bartonella diagnostic methods in endocarditis"
Synthesis Agent → gap detection → Writing Agent → latexEditText (draft) → latexSyncCitations (Fournier 2001, Chomel 2006) → latexCompile → peer-ready PDF with embedded tables.
"Find open-source code for Bartonella qPCR primer design"
Research Agent → paperExtractUrls → Code Discovery → paperFindGithubRepo → githubRepoInspect → Python scripts for gltA/its primer validation from Rolain-style assays.
Automated Workflows
Deep Research workflow scans 50+ Bartonella papers via searchPapers → citationGraph, producing structured report on PCR evolution from Boulouis (2005) to Maggi (2013). DeepScan applies 7-step CoVe to verify Rolain et al. (2003) primer specificity against tick vectors (Michelet 2014). Theorizer generates hypotheses on nested PCR for low-bacteremia from Chomel (2006) and Billeter (2008) transmission data.
Frequently Asked Questions
What defines Bartonella molecular diagnostic methods?
PCR assays targeting its, pap31, gltA genes detect Bartonella DNA in blood, fleas, tissues (Rolain et al., 2003).
What are common PCR methods and targets?
its and pap31 primers identify B. henselae, B. quintana in fleas; sequencing confirms (Rolain et al., 2003). Nested PCR boosts sensitivity in low-bacteremia (Cotté et al., 2008).
What are key papers on these methods?
Rolain et al. (2003; 316 citations) details multi-species PCR in fleas; Chomel et al. (2006; 438 citations) links to zoonotic reservoirs; Maggi et al. (2013) shows co-infection detection.
What open problems exist?
Standardizing qPCR for diverse species; overcoming inhibitors in valve tissues; validating tick vector assays beyond fleas (Billeter et al., 2008; Michelet et al., 2014).
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