Prevotella nigrescens ATCC 33563

Prevotella nigrescens ATCC 33563 is a Gram-negative, rod-shaped bacterium that thrives in anaerobic conditions, categorizing it as an obligate anaerobe. This microbe is part of the larger Prevotella genus, which is primarily known for its role in human oral and gut microbiota. The optimal growth temperature for P. nigrescens is around 37°C, which aligns with the body temperature of warm-blooded hosts, indicating its adaptation to the human environment. As a chemoheterotroph, P. nigrescens obtains its energy and carbon from organic compounds, typically deriving from the breakdown of dietary polysaccharides and proteins in the digestive tract. Prevotella nigrescens inhabits various body sites, predominantly found in the oral cavity and gastrointestinal tract of humans. It can also be present in other mucosal surfaces, demonstrating its ability to colonize diverse environments within the human body. The prevalence of P. nigrescens in the oral microbiome is particularly noteworthy, as it plays a role in maintaining the balance of microbial communities while also being associated with periodontal diseases when dysbiosis occurs. This microorganism is also implicated in various clinical conditions, including abscess formation, respiratory infections, and systemic diseases, underscoring its clinical relevance. Notably, P. nigrescens can contribute to the formation of biofilms, which protect the microbial community from the host immune response and antibiotics, making infections difficult to treat. Consequently, understanding its biology and interactions within the host environment provides insights into its role in health and disease, emphasizing the importance of anaerobic bacteria in human microbiota balance.