Clostridium perfringens is an obligately anaerobic rod-shaped bacterium and etiological agent for several diseases in humans and animals. The pathogen has been listed as Validated Biological Agent and warrants development of medical countermeasures. The homologs of some of the lipoproteins identified from various fractions of C. perfringens in our previous studies were observed to be virulence determinants in other pathogenic bacteria. Three putative virulence associated lipoproteins; polysaccharide deacetylase family protein, probable ion-uptake ABC transporter, and a putative lipoprotein of no known function are reported here with respect to their immuno-protective potentials. The three proteins were over expressed and purified to near homogeneity. The lipoproteins were shown to be exposed on the C. perfringens surface and, hence, accessible to antibodies and potentially visible to the host immune system. Immunization of mice with purified recombinant proteins elicited protective immunity against challenge with C. perfringens in mouse gas gangrene model. Distribution and relationship of orthologous proteins across other bacterial select agents especially among the members of Firmicutes, was carried out to look for conserved antigenic determinants.
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http://dx.doi.org/10.1016/j.meegid.2015.05.029 | DOI Listing |
J Nat Prod
January 2025
Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen 9747AG, The Netherlands.
Recent genome mining work revealed that unexplored habitats exhibit great potential for discovering new nonribosomal peptides (NRPs) and ribosomally synthesized and post-translationally modified peptides (RiPPs). Lanthipeptides are a group of RiPPs exhibiting a variety of biological functions. They are characterized by the presence of the thioether-containing bis-amino acids lanthionine and/or methyllanthionine.
View Article and Find Full Text PDFJ Infect Public Health
December 2024
Department of Pediatric Infectious Diseases, Ministry of National Guard-Health Affairs (MNGHA), King Abdullah Specialist Children Hospital, Riyadh, Saudi Arabia; King Abdullah International Medical Research Centre, King Abdulaziz Medical City, Ministry of National Guard-Health Affairs, Riyadh, Saudi Arabia; Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City (KAMC), MNGHA, Riyadh, Saudi Arabia.
Necrotizing fasciitis is a potentially life-threatening infection that can lead to rapid muscular and fascial necrosis, often resulting in sepsis. In addition to the rapid disease progression, diagnosing this disease in children can be challenging as they cannot accurately communicate their symptoms. Spontaneous necrotizing fasciitis secondary to Clostridial infection has rarely been described in the literature but occurs in neutropenic patients with significant morbidity and mortality from myonecrosis and gas gangrene.
View Article and Find Full Text PDFMol Biotechnol
January 2025
Enzyme and Microbial Research Center, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
Glucanases are widely applied in industrial applications such as brewing, biomass conversion, food, and animal feed. Glucanases catalyze the hydrolysis of glucan to produce the sugar hemiacetal through hydrolytic cleavage of glycosidic bonds. Current study aimed to investigate structural insights of a glucanase from Clostridium perfringens through blind molecular docking, site-specific molecular docking, molecular dynamics (MD) simulation, and binding energy calculation.
View Article and Find Full Text PDFJ Orthop Case Rep
January 2025
Department of Orthopedic Surgery, Hadassah University Medical Center, Jerusalem, Israel.
Introduction: Gas gangrene, is an aggressive and life-threatening necrotizing infection of soft tissues. We report a case of upper-limb trauma resulting in clostridial gas gangrene.
Case Report: A 36-year-old healthy male presented to our department with a left humeral shaft fracture and an open elbow fracture.
J Clin Med
December 2024
Dermatology Department, Hospital Vital Álvarez Buylla, 33611 Mieres, Spain.
Research on the relationship between gut microbiota (GM) and atopic dermatitis (AD) has seen a growing interest in recent years. The aim of this systematic review was to determine whether differences exist between the GM of adults with AD and that of healthy adults (gut dysbiosis). We conducted a systematic review based on the PRISMA guidelines (Preferred Reporting Items for Systematic Reviews and Meta-Analyses).
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