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At least 739 records · Page 41Linked to original sources
PubMed1972

Experimental infection of the skin in the hamster simulating human impetigo. IV. Cellular responses after streptococcal and staphylococcal infections.

Various cellular responses to skin infections in an experimental animal model were explored. Total leukocyte counts varied after group A streptococcal infections, but a depression was commonly seen after M type 12 impetigo. Staphylococcus aureus infections resulted in moderate leukocytosis. A marked neutrophilia was universal with streptococcal or staphylococcal disease. A positive nitroblue tetrazolium (NBT) response appeared 24 hr after infection, reached a peak in 48 hr, and then declined. This occurred in the absence of extensive cellulitis or bacteremia. An increase in the percentage and absolute number of NBT-positive neutrophils occurred. M type 57 streptococcus produced a more strongly positive NBT test than did M type 12. Cell-free filtrates of a broth culture of M type 57 streptococcus produced NBT responses in hamsters comparable to the responses seen after injection of live organisms. These studies indicate the usefulness of this animal model to study various parameters of the NBT test.

Animals↗
PubMed2004

MSCRAMM--targeted vaccines and immunotherapy for staphylococcal infection.

Hospital-acquired infections are associated with prolonged hospitalization and an increase in both healthcare costs and resources. Advances in sophisticated medical procedures, an increase in the number of immunocompromised patients, and the continued emergence of resistance to conventional antibiotic therapy has created a need for alternative strategies to prevent and treat infectious bacterial diseases. Immunoprevention and immunotherapy targeting microbial surface components recognizing adhesive matrix molecule (MSCRAMM) proteins are viable approaches to potentially impede bacterial adherence, eliminate colonization, and minimize hematogenous dissemination, thereby halting the inception and progression of infection. This review summarizes several investigative efforts where staphylococcal MSCRAMM proteins are being utilized in the design of subunit vaccines and in the development of innovative therapeutic strategies that could be implemented following the onset of infection to manage severe and life-threatening disease.

Adhesins, Bacterial↗