Abstract
Duck hepatitis B virus (DHBV) was found in the serum of 1-6% of Pekin ducklings originated from French commercial flocks. The viremia was followed in the serum of 5 ducklings over a span of 3 mth by monitoring the levels of DHBV DNA and the endogenous DNA polymerase (DNAp) activity. The DHBV DNA levels in serum were quantified either by the DNA dot hybridization technique including counting of retaining radioactivity, or by successive dilutions of each serum sample followed by DNA hybridization. The counting of the retained radioactivity, as plotted on a curve and its evolution compared with that of viral DNAp activity. DHBV DNA levels in serum, estimated by both methods paralleled those of the DNAp activity, which peaked at the 4th or 5th week posthatch to decrease and fluctuate thereafter. Occasional discordance between DHBV DNA levels and the endogenous DNAp activity was observed, which could be correlated with the degree of repair of the single stranded gap of serum DHBV DNA. Parallel followup studies comparing quantitative estimations of serum viral DNA and of DNAp activity, as presented here, may provide some clues for the understanding of the mechanisms involved in the establishment of the HEPA DNA virus carrier state. Such comparative studies may also be crucial for optimal monitoring of antiviral drugs in both human clinical trials and animal experimental studies.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 251-260 |
| Number of pages | 10 |
| Journal | Journal of Virological Methods |
| Volume | 10 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1985 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Virology
Cite this
Comparative study of DHBV DNA levels and endogenous DNA polymerase activity in naturally infected ducklings in France. / Cova, L.; Hantz, O.; Arliaud-Gassin, M.; Chevalier, A.; Berthillon, P.; Boulay, J.; Jacquet, C.; Chomel, Bruno B; Vitvitski, L.; Trepo, C.
In: Journal of Virological Methods, Vol. 10, No. 3, 1985, p. 251-260.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Comparative study of DHBV DNA levels and endogenous DNA polymerase activity in naturally infected ducklings in France
AU - Cova, L.
AU - Hantz, O.
AU - Arliaud-Gassin, M.
AU - Chevalier, A.
AU - Berthillon, P.
AU - Boulay, J.
AU - Jacquet, C.
AU - Chomel, Bruno B
AU - Vitvitski, L.
AU - Trepo, C.
PY - 1985
Y1 - 1985
N2 - Duck hepatitis B virus (DHBV) was found in the serum of 1-6% of Pekin ducklings originated from French commercial flocks. The viremia was followed in the serum of 5 ducklings over a span of 3 mth by monitoring the levels of DHBV DNA and the endogenous DNA polymerase (DNAp) activity. The DHBV DNA levels in serum were quantified either by the DNA dot hybridization technique including counting of retaining radioactivity, or by successive dilutions of each serum sample followed by DNA hybridization. The counting of the retained radioactivity, as plotted on a curve and its evolution compared with that of viral DNAp activity. DHBV DNA levels in serum, estimated by both methods paralleled those of the DNAp activity, which peaked at the 4th or 5th week posthatch to decrease and fluctuate thereafter. Occasional discordance between DHBV DNA levels and the endogenous DNAp activity was observed, which could be correlated with the degree of repair of the single stranded gap of serum DHBV DNA. Parallel followup studies comparing quantitative estimations of serum viral DNA and of DNAp activity, as presented here, may provide some clues for the understanding of the mechanisms involved in the establishment of the HEPA DNA virus carrier state. Such comparative studies may also be crucial for optimal monitoring of antiviral drugs in both human clinical trials and animal experimental studies.
AB - Duck hepatitis B virus (DHBV) was found in the serum of 1-6% of Pekin ducklings originated from French commercial flocks. The viremia was followed in the serum of 5 ducklings over a span of 3 mth by monitoring the levels of DHBV DNA and the endogenous DNA polymerase (DNAp) activity. The DHBV DNA levels in serum were quantified either by the DNA dot hybridization technique including counting of retaining radioactivity, or by successive dilutions of each serum sample followed by DNA hybridization. The counting of the retained radioactivity, as plotted on a curve and its evolution compared with that of viral DNAp activity. DHBV DNA levels in serum, estimated by both methods paralleled those of the DNAp activity, which peaked at the 4th or 5th week posthatch to decrease and fluctuate thereafter. Occasional discordance between DHBV DNA levels and the endogenous DNAp activity was observed, which could be correlated with the degree of repair of the single stranded gap of serum DHBV DNA. Parallel followup studies comparing quantitative estimations of serum viral DNA and of DNAp activity, as presented here, may provide some clues for the understanding of the mechanisms involved in the establishment of the HEPA DNA virus carrier state. Such comparative studies may also be crucial for optimal monitoring of antiviral drugs in both human clinical trials and animal experimental studies.
UR - http://www.scopus.com/inward/record.url?scp=84886639124&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84886639124&partnerID=8YFLogxK
U2 - 10.1016/0166-0934(85)90061-8
DO - 10.1016/0166-0934(85)90061-8
M3 - Article
VL - 10
SP - 251
EP - 260
JO - Journal of Virological Methods
JF - Journal of Virological Methods
SN - 0166-0934
IS - 3
ER -