About NOCARD Base

NOCARD Base is a comprehensive open-access database developed for the functional annotation of hypothetical proteins identified from pathogenic strains of Nocardia asteroides. The platform was designed to provide a dedicated and centralized resource for researchers working on nocardiosis, an important infectious disease caused by pathogenic Nocardia species. Since no specialized database currently exists for Nocardia asteroides, NOCARD Base aims to bridge this critical gap by offering systematically curated genomic and functional annotation datasets through an interactive and user-friendly platform. The database contains retrieved pathogenic strains of Nocardia asteroides, from which hypothetical proteins were identified and characterized using a comprehensive functional annotation pipeline [1]. The functionally annotated and characterized hypothetical proteins may possess unique functional, or pathogenic properties that could serve as potential drug targets, vaccine candidates, or biomarkers against nocardiosis, making them suitable for downstream computational analysis and experimental validation [2]. In addition to annotated hypothetical proteins, NOCARD Base also integrates a wide range of associated datasets including genomes, strains, bioassays, substances, BioProjects, BioSamples, patents, and related scientific books and resources. NOCARD Base serves as a valuable scientific resource for microbiologists, bioinformaticians, drug discovery researchers, and the broader scientific community by providing freely accessible data for advanced computational and translational research. The platform is dedicated to supporting future investigations aimed at identifying novel therapeutic interventions and improving our understanding of the pathogenic mechanisms of Nocardia asteroides.

About Nocardia asteroides

Nocardia asteroides is a Gram-positive, aerobic, filamentous bacterium characterized by branching hyphae-like structures under microscopic observation. It is recognized as an important opportunistic and nosocomial pathogen capable of causing severe infections in humans, particularly among immunocompromised individuals and organ transplant recipients. Among the different species of Nocardia, N. asteroides is considered one of the most dominant and clinically significant pathogens associated with nocardiosis. The organism primarily causes pulmonary nocardiosis, which is commonly acquired through inhalation of contaminated particles into the respiratory tract. Clinical manifestations of infection include cough, chest pain, dyspnea, fever, fatigue, weight loss, and night sweats. Several of these symptoms closely resemble those observed in Tuberculosis (TB), making accurate pathogen detection and differential diagnosis essential for effective treatment [3]. In severe cases, the pathogen may disseminate to other organs, especially in patients with weakened immune systems. Nocardia asteroides belongs to the phylum Actinomycetes, a group of microorganisms known for producing diverse secondary metabolites, including clinically important antibiotics. Previous studies have demonstrated the remarkable virulence potential of Nocardia species due to their ability to survive and persist within various human cells. Furthermore, antimicrobial susceptibility patterns and pathogenic characteristics vary considerably among different Nocardia species, increasing the importance of species-specific characterization and analysis. Epidemiological studies indicate that nocardiosis predominantly affects individuals between 40 and 80 years of age, with the majority of reported infections occurring in immunocompromised populations, particularly in the United States and other developed regions worldwide [4].

Global Distribution of Nocardiosis Cases

Global distribution of reported nocardiosis cases across different countries and regions, highlighting the geographical prevalence, clinical involvement, and epidemiological burden of Nocardia infections worldwide [5].

Global Nocardiosis Case Fatality Trends

Temporal trends in global human nocardiosis cases and corresponding case-fatality rates from 1950 to 2024 [6].

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