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Heat-shock protein vaccine reduces alveolar bone loss

Heat-shock protein (HSP) can be utilized as a vaccine to cross-protect against multiple pathogenic species. Investigators from Pusan National University (South Korea) today presented the findings of a study they performed to evaluate the bacterium Porphyromonas gingivalis heat-shock protein (HSP) 60 as a vaccine candidate to inhibit multiple bacteria-induced alveolar bone loss. Recombinant P. gingivalis HSP60 was produced and purified from P. gingivalis GroEL gene. Rats were immunized with P. gingivalis HSP60, and experimental alveolar bone loss was induced by infection with multiple periodontopathogenic bacteria.

There was a very strong inverse relationship between post-immune anti-P. gingivalis HSP immunoglobulin G levels and the amount of alveolar bone loss induced by either P. gingivalis or multiple bacterial infection (p = 0.007). Analysis of data from polymerase chain-reaction indicated that the vaccine successfully eradicated the multiple pathogenic species.

The researchers concluded that P. gingivalis HSP60 could potentially be developed as a vaccine to inhibit periodontal disease induced by multiple pathogenic bacteria.


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Contact: Linda Hemphill
lhemphill@iadr.org
International & American Association for Dental Research
30-Jun-2006


Page: 1

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