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Bartonella species infections research
Research Guide
What is Bartonella species infections research?
Bartonella species infections research is the scientific study of infections caused by Bartonella bacteria, focusing on their zoonotic transmission, pathogenesis, treatment options, vectors, endocarditis associations, molecular diagnostic methods, host interactions, and epidemiology.
Research on Bartonella species infections encompasses 16,512 published works exploring zoonotic potential and transmission vectors. Studies address pathogenesis, host interactions, and clinical manifestations including endocarditis. Molecular diagnosis and treatment strategies form key areas within this body of work.
Topic Hierarchy
Research Sub-Topics
Bartonella Pathogenesis Mechanisms
Researchers investigate Bartonella's intracellular survival strategies, type IV secretion systems, and host cell invasion via adhesins like BadA. Studies use infection models to elucidate virulence factor contributions.
Bartonella Endocarditis Clinical Management
This sub-topic covers diagnosis challenges, antibiotic regimens like doxycycline-gentamicin combinations, and surgical interventions for Bartonella-associated culture-negative endocarditis. Case series analyze outcomes and relapse rates.
Bartonella Molecular Diagnostic Methods
Development and validation of PCR assays targeting Bartonella-specific genes like rpoB and ITS regions from blood, valves, and tissues. Research compares sensitivity of serology versus molecular detection in diverse infections.
Bartonella Zoonotic Transmission Vectors
Studies examine flea (Ctenocephalides felis) and tick transmission dynamics of Bartonella henselae and quintana from cats, dogs, and rodents to humans. Vector competence and reservoir roles are modeled epidemiologically.
Bartonella Host Immune Interactions
Research dissects immune evasion tactics including Deformin effector modulation of apoptosis and cytokine responses in monocytes and endothelial cells. Host genetic factors influencing susceptibility are identified.
Why It Matters
Bartonella species infections research impacts clinical management of endocarditis and vascular infections, as seen in identification of the agent causing bacillary angiomatosis, a condition linked to a rickettsia-like organism closely related to R. quintana (Relman et al., 1990, 'The Agent of Bacillary Angiomatosis'). This work enabled diagnosis of previously uncultured pathogens, aiding treatment in immunocompromised patients with angioproliferative lesions. Endocarditis due to rare fastidious bacteria, including Bartonella, requires specialized culture-negative approaches, as detailed by Brouqui and Raoult (2001, 'Endocarditis Due to Rare and Fastidious Bacteria'), where such organisms account for up to 30% of culture-negative cases, guiding prolonged antibiotic regimens like gentamicin and doxycycline combinations.
Reading Guide
Where to Start
'The Agent of Bacillary Angiomatosis' (1990) by Relman et al., as it introduces molecular identification of Bartonella-like pathogens and their clinical relevance in vascular infections.
Key Papers Explained
Relman et al. (1990) in 'The Agent of Bacillary Angiomatosis' first molecularly characterized the Bartonella-related agent of angiomatosis, building foundational methods. Brouqui and Raoult (2001) in 'Endocarditis Due to Rare and Fastidious Bacteria' extended this to endocarditis diagnostics, citing Bartonella among culture-negative pathogens. Moreillon and Que (2004) in 'Infective endocarditis' contextualizes Bartonella within broader etiology, linking to pathogenesis insights from prior works.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Current frontiers emphasize molecular diagnostics and vector-host models, though no recent preprints are available; focus remains on refining PCR for fastidious strains as in Brouqui and Raoult (2001).
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | Leptospirosis: a zoonotic disease of global importance | 2003 | The Lancet Infectious ... | 2.4K | ✕ |
| 2 | Severe Group A Streptococcal Infections Associated with a Toxi... | 1989 | New England Journal of... | 1.2K | ✕ |
| 3 | Varicella-zoster virus | 1996 | Clinical Microbiology ... | 1.1K | ✓ |
| 4 | Genital Herpes Simplex Virus Infections: Clinical Manifestatio... | 1983 | Annals of Internal Med... | 928 | ✕ |
| 5 | The Agent of Bacillary Angiomatosis | 1990 | New England Journal of... | 896 | ✓ |
| 6 | Systematic review of incidence and complications of herpes zos... | 2014 | BMJ Open | 878 | ✓ |
| 7 | Infective endocarditis | 2004 | The Lancet | 852 | ✕ |
| 8 | Recommendations for the Management of Herpes Zoster | 2006 | Clinical Infectious Di... | 827 | ✓ |
| 9 | Herpes Zoster | 2002 | New England Journal of... | 762 | ✕ |
| 10 | Endocarditis Due to Rare and Fastidious Bacteria | 2001 | Clinical Microbiology ... | 752 | ✓ |
Frequently Asked Questions
What is bacillary angiomatosis in Bartonella research?
Bacillary angiomatosis is a vascular proliferative lesion caused by a rickettsia-like organism identified as the agent of the disease. Relman et al. (1990) in 'The Agent of Bacillary Angiomatosis' used molecular methods to characterize it as closely related to R. quintana. This identification applies to other uncultured infectious agents.
How does Bartonella contribute to endocarditis?
Bartonella species cause infective endocarditis, particularly in culture-negative cases. Brouqui and Raoult (2001) in 'Endocarditis Due to Rare and Fastidious Bacteria' note Bartonella among fastidious bacteria responsible for such infections. Diagnosis relies on serology, PCR, and prolonged antibiotics.
What diagnostic methods are used for Bartonella infections?
Molecular diagnosis, including PCR on tissue, identifies Bartonella in angiomatosis and endocarditis. Relman et al. (1990) demonstrated 16S rRNA sequencing for uncultured pathogens like the bacillary angiomatosis agent. These methods overcome culture difficulties with fastidious Bartonella species.
What are the main vectors in Bartonella transmission?
Bartonella infections exhibit zoonotic potential with transmission via arthropod vectors such as fleas and lice. Research highlights vectors in pathogenesis and epidemiology of species like B. quintana and B. henselae. Host interactions with cats and rodents further propagate infections.
What treatments target Bartonella endocarditis?
Treatment for Bartonella endocarditis involves combinations of doxycycline, gentamicin, and third-generation cephalosporins for 4-6 weeks. Brouqui and Raoult (2001) recommend these for rare fastidious bacteria including Bartonella. Surgical valve replacement may be needed in 40-50% of cases.
Open Research Questions
- ? How do Bartonella species evade host immune responses during chronic intracellular persistence?
- ? What is the precise role of arthropod vectors in global epidemiology of zoonotic Bartonella transmission?
- ? Which molecular markers best distinguish pathogenic Bartonella species in endocarditis and angiomatosis?
- ? What host genetic factors influence susceptibility to severe Bartonella infections?
- ? How effective are current antibiotic regimens against biofilm-forming Bartonella in vascular lesions?
Recent Trends
The field includes 16,512 works with sustained focus on molecular diagnosis and endocarditis, as evidenced by high citations of Relman et al. (1990, 896 citations) and Brouqui and Raoult (2001, 752 citations); no growth rate data or recent preprints reported.
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