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Analysis of DNA-vaccinated fish reveals viral antigen in muscle, kidney and thymus, and transient histopathologic changes Garver, K.A.; Conway, C.M.; Elliot, D.G.; Kurath, G. (2005). Analysis of DNA-vaccinated fish reveals viral antigen in muscle, kidney and thymus, and transient histopathologic changes. Mar. Biotechnol. 7(5): 540-553. http://dx.doi.org/10.1007/s10126-004-5129-z In: Marine Biotechnology. Springer-Verlag: New York. ISSN 1436-2228; e-ISSN 1436-2236

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Beschikbaar in	Auteurs
VLIZ: Non-open access 75718 [ aanvragen ]

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Trefwoorden

Acids > Organic compounds > Organic acids > Nucleic acids > DNA Diseases > Infectious diseases Drugs > Vaccines Fauna > Aquatic organisms > Aquatic animals > Fish Haemopoiesis Pathology > Histopathology Persistence Marien/Kust

Author keywords

fish DNA vaccine; infectious hematopoietic necrosis virus (IHNV);biodistribution; persistence; histopathologic effects; vaccine safety

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Auteurs		Top
Garver, K.A. Conway, C.M. Elliot, D.G. Kurath, G.

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Abstract

A highly efficacious DNA vaccine against a fish rhabdovirus, infectious hematopoietic necrosis virus (IHNV), was used in a systematic study to analyze vaccine tissue distribution, persistence, expression patterns, and histopathologic effects. Vaccine plasmid pIHNw-G, containing the gene for the viral glycoprotein, was detected immediately after intramuscular injection in all tissues analyzed, including blood, but at later time points was found primarily in muscle tissue, where it persisted to 90 days. Glycoprotein expression was detected in muscle, kidney, and thymus tissues, with levels peaking at 14 days and becoming undetectable by 28 days. Histologic examination revealed no vaccine-specific pathologic changes at the standard effective dose of 0.1 mu g DNA per fish, but at a high dose of 50 mu g an increased inflammatory response was evident. Transient damage associated with needle injection was localized in muscle tissue, but by 90 days after vaccination no damage was detected in any tissue, indicating the vaccine to be safe and well tolerated.

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