[Serotypes of hepatitis C virus in mixed cryoglobulinaemia].

BACKGROUND

Several authors have studied the genotypic distribution of hepatitis C virus (HCV) in mixed cryoglobulinaemia (MC), which represents the most typical extra-hepatic manifestation of the HCV infection. On the other hand, at present no data are available on the HCV serotypic characterization of MC patients.

METHODS

Thus, 28 serum specimens from HCV positive patients affected by MC (7 males and 21 females; mean age of 64 yrs, range 35-80) have been evaluated by a serotyping EIA method (Murex HCV Serotyping 1-6 Assay, Murex Diagnostics, Pomezia, Italy).

RESULTS

The HCV serotype 1 was found in 13 patients (46.4%), serotype 2 in 5 patients (17.9%) and mixed serotypes in 3 patients (10.7%), showing, respectively, serotypes 1+2, 1+4, and 1+4+5. Moreover, the HCV serotype was not detectable in 7 patients (25.0%).

CONCLUSIONS

These results, obtained by using a simple, serologic technique, agree with some literature data concerning MC patients from the same geographic region as ours (Venetian area). In addition, our findings appears to reflect merely the genotypic distribution of the HCV infection in the North Italy.