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Recrudescence of herpes simplex virus type 1 in latently infected rats after trauma to oral tissues
Department of Oral Surgery, University of Gothenburg, Sweden.
1993 (English)In: Journal of Oral Pathology & Medicine, ISSN 0904-2512, E-ISSN 1600-0714, Vol. 22, no 5, 214-220 p.Article in journal (Refereed) Published
Abstract [en]

Tooth extraction in rats was used to trigger a latent HSV-1 infection. HSV-1 was inoculated unilaterally in the rat palates. Eight weeks later two molars were removed bilaterally. The trigeminal ganglia were co-cultivated and HSV-1 was isolated from 63% of the ganglia on the infected sides but from only 11% on control sides. The immune response pattern was analysed by immunoblotting of rat serum, and strong reactivity to HSV-1 specific cell polypeptides and glycoproteins (ICP6, gC, pgC, gD) was seen after reactivation. The extraction sockets were histopathologically evaluated and showed healing on the infected side in 26% compared to 63% in contralateral control sockets. The effect of acyclovir (ACV) treatment was elucidated and was found to influence the subsequent development of antibodies and to promote healing of the sockets. Vesiculation in intra- and subepithelial tissue was present on the infected side in 58% but in only 12% of ACV-treated animals. The present study in rats has shown that a latent HSV-1 infection can be established and reactivated by tooth extraction. Reactivation resulted in delayed healing of sockets on the latently infected side but not on the contralateral control side. HSV-1 reactivation was demonstrated serologically by immunoblotting. Healing was significantly promoted by administration of ACV, which also supports the contention that HSV-1 interferes with the healing process.

Place, publisher, year, edition, pages
1993. Vol. 22, no 5, 214-220 p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-222059DOI: 10.1111/j.1600-0714.1993.tb01059.xPubMedID: 8315601OAI: oai:DiVA.org:uu-222059DiVA: diva2:710611
Available from: 2014-04-07 Created: 2014-04-07 Last updated: 2014-11-04Bibliographically approved

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