Bartonella grahamii

General Information

Bartonella grahamii is a fascinating bacterium that belongs to the genus Bartonella. This microorganism is particularly interesting due to its role as a zoonotic pathogen, meaning it can be transmitted from animals to humans. One of the most notable aspects of B. grahamii is its association with rodents, which serve as its primary reservoir hosts. This relationship makes it a subject of significant interest in the study of vector-borne diseases, as it is often transmitted to humans through arthropod vectors such as fleas and ticks. B. grahamii has been implicated in a variety of human infections, ranging from asymptomatic cases to more severe conditions such as endocarditis and neuroretinitis. Its ability to cause a wide spectrum of diseases highlights its adaptability and the complexity of its interactions with the host immune system. This adaptability is further underscored by its capacity to persist in the bloodstream of its hosts for extended periods, a trait that is common among Bartonella species. From a research perspective, B. grahamii is valuable for studying the mechanisms of chronic infection and immune evasion. Its genome has been sequenced, providing insights into the genetic basis of its pathogenicity and its interactions with both its arthropod vectors and mammalian hosts. The study of B. grahamii and related species can also contribute to the development of diagnostic tools and treatments for Bartonella-related diseases. In summary, Bartonella grahamii is a unique and valuable organism for scientific research due to its zoonotic potential, its role in a variety of human diseases, and its complex interactions with hosts and vectors. Its study not only enhances our understanding of infectious diseases but also aids in the development of better public health strategies to manage and prevent Bartonella infections.

Bartonella grahamii is a fascinating bacterium that belongs to the genus Bartonella, which is known for its association with various animal and human diseases. This organism is particularly interesting due to its role as a potential pathogen in both humans and animals, especially in relation to zoonotic transmission. It has been implicated in causing a range of clinical manifestations, including endocarditis and other systemic infections. One of the unique aspects of Bartonella grahamii is its ability to persist in the host, often evading the immune response. This characteristic makes it a subject of interest in research focused on chronic infections and immune evasion mechanisms. The bacterium is also known to be transmitted by ectoparasites, particularly fleas and ticks, which adds to its ecological and epidemiological significance. Furthermore, studies have shown that Bartonella grahamii can infect various mammalian hosts, including rodents and domestic animals, which raises questions about its evolutionary adaptations and host interactions. This versatility in host range makes it a valuable model for understanding host-pathogen dynamics. In terms of research applications, Bartonella grahamii serves as a critical organism for studying the molecular mechanisms of pathogenesis, as well as the development of potential therapeutic strategies against related species within the Bartonella genus. Its unique characteristics and the implications for public health underscore the importance of continued research into this intriguing microorganism.

Taxonomy

Superkingdom: Bacteria

Phylum: Pseudomonadota

Class: Alphaproteobacteria

Order: Hyphomicrobiales

Family: Bartonellaceae

Genus: Bartonella

Species: Bartonella grahamii

NCBI ID

33045

Genome Info

FTP Path:
ftp.ncbi.nlm.nih.gov/genomes/all/GCA/900/445/635/GCA_900445635.1_51184_C02

File for sequence-based predictions:
GCA_900445635.1_51184_C02_genomic.fasta

Descriptions

Clinical Implications and Relevance

Source: gpt-4o-mini-2024-07-18

The bacterium Bartonella grahamii is a member of the genus Bartonella, which is known for its association with various infections in humans and animals. This organism has been implicated in Bartonellosis, a disease that can manifest with a range of symptoms, including fever, fatigue, and lymphadenopathy. While B. grahamii is less commonly discussed than its relatives, such as Bartonella henselae, it is still recognized for its potential role in zoonotic transmission and its association with cat scratch fever and trench fever. One of the significant clinical implications of B. grahamii is its pathogenicity. It can be transmitted through bites from infected fleas or through scratches from infected animals, particularly cats. The organism can evade the immune response by residing within red blood cells and endothelial cells, which helps it to avoid detection and destruction by the host's immune system. This ability to persist in the host can lead to chronic infections that are difficult to diagnose and treat. In terms of antimicrobial resistance, there is limited data on the resistance patterns of B. grahamii, but the genus Bartonella is known to exhibit some level of resistance to common antibiotics, which complicates treatment options. This highlights the need for further research into effective therapeutic strategies against infections caused by this organism. Additionally, there is ongoing research into the potential use of B. grahamii and other Bartonella species in the development of vaccines or therapeutics aimed at preventing or treating related diseases. Understanding the interactions of B. grahamii with the human body and its mechanisms of immune evasion is crucial for developing effective interventions. Overall, while Bartonella grahamii may not be as widely recognized as other pathogens, its role in human health and disease underscores the importance of continued surveillance and research into its clinical implications.

Habitat and Ecological Niches

Source: gpt-4o-mini-2024-07-18

Bartonella grahamii is a bacterium primarily associated with the wildlife habitats of rodents, particularly in temperate regions. This microorganism is often found in the suburban and rural environments where its rodent hosts thrive. The ecological niche of B. grahamii is closely linked to its role as a pathogen, which can influence the health of its hosts and, consequently, the dynamics of the local ecosystem. In these habitats, B. grahamii can be transmitted through ectoparasites, such as fleas, which serve as vectors. This interaction highlights the symbiotic relationships that exist within these ecosystems, where the bacterium relies on its hosts and vectors for survival and propagation. The presence of B. grahamii can also impact the population dynamics of rodent species, potentially leading to changes in predator-prey relationships within the food web. Furthermore, B. grahamii has been documented in urban environments, where it can adapt to the presence of human activity. This adaptability allows it to persist in areas with varying levels of disturbance, showcasing its resilience and ecological versatility. Overall, Bartonella grahamii plays a significant role in the health of rodent populations and the broader ecological interactions within its associated biomes.

Industrial Application

Source: gpt-4o-mini-2024-07-18

The microorganism Bartonella grahamii has garnered attention for its potential applications in various industrial sectors, particularly in biotechnology and pharmaceutical development. While primarily known as a pathogen, its unique metabolic pathways and interactions with host organisms can be harnessed for beneficial uses. In the realm of biotechnology, Bartonella grahamii may contribute to the development of novel diagnostic tools. Its ability to interact with the immune system can be studied to create biomarkers for disease detection, particularly in vector-borne diseases. This could lead to advancements in diagnostic assays that are more sensitive and specific. In pharmaceutical development, compounds derived from Bartonella grahamii or its metabolic byproducts could be explored for their potential therapeutic properties. Research into its secondary metabolites may reveal new antimicrobial agents or anti-inflammatory compounds, which could be significant in treating various infections or inflammatory conditions. While Bartonella grahamii is not widely recognized for applications in waste management or biofuel production, its relatives in the Bartonella genus are being studied for their roles in biodegradation processes. Understanding the metabolic capabilities of Bartonella grahamii could lead to insights into how similar organisms can be utilized in bioremediation efforts, particularly in environments contaminated with organic pollutants. Overall, while the industrial applications of Bartonella grahamii are still emerging, its potential in biotechnology and pharmaceutical development highlights the importance of further research into this microorganism's capabilities.

Phenotypes and Predictions

The table shows the phenotypes and predictions. Cell colors indicate the class of the value. When literature-based data is available, a checkmark (✓) indicates a correct prediction, while an ✗ indicates an incorrect prediction.

Literature-based phenotypes: 11

LLM predicted phenotypes: 2

Phenotype	High-quality annotation	mistralai/mistral-7b-instruct	google/gemini-pro	mistralai/mixtral-8x7b-instruct:nitro	perplexity/llama-3-sonar-small-32k-chat	meta-llama/llama-3-8b-instruct:nitro	openchat/openchat-7b	google/gemma-7b-it	meta-llama/llama-3-70b-instruct:nitro	google/palm-2-chat-bison-32k	google/palm-2-chat-bison-32k	anthropic/claude-3-haiku:beta	anthropic/claude-3-haiku:beta	openai/gpt-4	openai/gpt-4	google/gemini-pro-1.5	google/gemini-pro-1.5	microsoft/phi-3-mini-128k-instruct	microsoft/phi-3-mini-128k-instruct	google/gemini-flash-1.5	google/gemini-flash-1.5	openai/gpt-3.5-turbo-0125	openai/gpt-3.5-turbo-0125	openai/gpt-4o	openai/gpt-4o	anthropic/claude-3.5-sonnet	anthropic/claude-3.5-sonnet	microsoft/wizardlm-2-8x22b	microsoft/wizardlm-2-8x22b
Motility	FALSE	false ✓	false ✓	false ✓	true ✗	true ✗	true ✗	true ✗	true ✗	false ✓	false ✓	true ✗	true ✗	false ✓	false ✓	true ✗	true ✗	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	true ✗	true ✗
Gram staining	gram stain negative	gram stain negative ✓	gram stain negative ✓	gram stain negative ✓	gram stain negative ✓	gram stain negative ✓	gram stain negative ✓	gram stain negative ✓	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓	N/A	gram stain negative ✓
Aerophilicity	aerobic	aerotolerant ✗	facultatively anaerobic ✗	facultatively anaerobic ✗	N/A	N/A	N/A	N/A	N/A	facultatively anaerobic ✗	facultatively anaerobic ✗	N/A	N/A	aerobic ✓	aerobic ✓	aerobic ✓	aerobic ✓	facultatively anaerobic ✗	facultatively anaerobic ✗	facultatively anaerobic ✗	facultatively anaerobic ✗	facultatively anaerobic ✗	facultatively anaerobic ✗	N/A	N/A	N/A	N/A	N/A	N/A
Extreme environment tolerance	FALSE	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	true ✗	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓
Biofilm formation	N/A	true	true	true	true	true	true	true	true	true	true	true	true	false	false	true	true	false	false	true	true	true	true	true	true	true	true	true	true
Animal pathogenicity	TRUE	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓
Biosafety level	biosafety level 2	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 3 ✗	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓	biosafety level 2 ✓
Health association	N/A	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true	true
Host association	TRUE	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	false ✗	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓	true ✓
Plant pathogenicity	FALSE	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓
Spore formation	FALSE	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓	false ✓
Hemolysis	gamma	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	alpha ✗	alpha ✗	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Cell shape	bacillus	coccus ✗	bacillus ✓	bacillus ✓	bacillus ✓	coccus ✗	coccus ✗	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓	bacillus ✓

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