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Correlation of detectability of hepatitis C virus genome in saliva of elderly Japanese symptomatic HCV carriers with their hepatic function

Korrelation der Nachweisbarkeit des Genoms des Hepatitis-C-Virus im Speichel älterer, japanischer, symptomatischer HCV-Träger mit ihrer Leberfunktion

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Summary

The hepatitis C virus (HCV) genome was sought in the saliva of 76 chronic HCV carriers (mean age nearly 60 years) in a rural Japanese twon, who had high serum titers of c-100 and anti-core second generation antibodies. In 27 samples (27 cases, 36%), the HCV-RNA genome was detected by the reverse transcriptase — polymerase chain reaction with either of two sets of primers covering two regions of the HCV genome: the 5'noncoding region and the region encompassing the putative envelope (E1). Transaminase values at the time of sampling were higher in the patients with than in those without detectable HCV RNA in saliva (p=0.04 for alanine aminotransferase, p=0.04 for aspartate aminotransferase; Wilcoxon test). The prevalence of the positivity was higher by 5'noncoding primers (14/59 vs. 15/68). Our data show that the severity and duration of hepatic dysfunction influence the detectability of the HCV genome in the saliva. This has been a controversial point among investigators.

Zusammenfassung

Das Genom des Hepatitis-C-Virus (HCV) wurde im Speichel von 76 chronischen HCV-Trägern (Durchschnittsalter knapp 60 Jahre), die einen hohen c-100-Serum-Titer und Core-Antikörper der zweiten Generation aufweisen und in einer ländlichen Stadt in Japan leben, gesucht. In 27 Proben (27 Fälle, 36%) wurde das HCV-RNA-Genom nachgewiesen durch reverse Transcriptase-Polymerase-Kettenreaktion mit beiden Primer-Sätzen, die zwei Regionen des HCV-Genomes einschließen: die 5′-nichtkodierende Region und die die mutmaßliche Hülle umgebende Region (E1). Die Transaminasen-Werte zur Zeit der Probenahme waren bei Patienten mit HCV-RNA im Speichel höher als bei denjenigen ohne feststellbare HCV-RNA (p=0.04 für Alaninaminotransferase, p=0.04 für Aspartataminotransferase; Wilcoxon-Test). Zwar war die Häufigkeit der Positivität bei 5′-nichtkodierenden Primern höher (14/59 gegenüber 15/68), aber die Differenz war nicht signifikant. Unsere Daten zeigen, daß die Schwere und die Dauer der Leberfunktionsstörung die Nachweisbarkeit des HCV-Genoms im Speichel beeinflussen, was ein strittiger Punkt unter den Forschern war.

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Sugimura, H., Harada, H., Kino, I. et al. Correlation of detectability of hepatitis C virus genome in saliva of elderly Japanese symptomatic HCV carriers with their hepatic function. Infection 23, 258–262 (1995). https://doi.org/10.1007/BF01716281

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