Volume 236, Issue 1 pp. 31-36
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Hepatitis C virus chronic infection as a common cause of mixed cryoglobulinaemia and autoimmune liver disease

C. FERRI MD

Corresponding Author

C. FERRI MD

Rheumatology and Clinical Immunology Unit, Institute of Medical Pathology I Pisa, Italy.

Istituto Patologia Medica I, Università di Pisa. Via Roma 67, 1–56100 Pisa, Italy.Search for more papers by this author
G. LONGOMBARDO

G. LONGOMBARDO

Rheumatology and Clinical Immunology Unit, Institute of Medical Pathology I Pisa, Italy.

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L. LA CIVITA

L. LA CIVITA

Rheumatology and Clinical Immunology Unit, Institute of Medical Pathology I Pisa, Italy.

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F. GRECO

F. GRECO

The Blood Centre, S. Chiara Hospital

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F. LOMBARDINI

F. LOMBARDINI

Rheumatology and Clinical Immunology Unit, Institute of Medical Pathology I Pisa, Italy.

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R. CECCHETTI

R. CECCHETTI

The Gastroenterology and Hepatology Unit, Hospital of Pontedera, Pisa

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M. A. CAGIANELLI

M. A. CAGIANELLI

The Gastroenterology and Hepatology Unit, Hospital of Pontedera, Pisa

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S. MARCHI

S. MARCHI

Gastroenterology and Hepatology Unit, Clinical Medicine I, University of Pisa

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M. MONTI

M. MONTI

The Gastroenterology and Hepatology Unit, Hospital of Pontedera, Pisa

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A. L. ZIGNEGO

A. L. ZIGNEGO

The Institute of Clinical Medicine II, University of Florence, Florence; Italy.

Hybridotest, Pasteur Institute, Paris, France

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M. P. MANNS

M. P. MANNS

Department of Gastroenterology and Hepatology, Centre for Internal Medicine, Hannover Medical School, Hannover, Germany

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First published: July 1994
Citations: 35

Abstract

Abstract. Objectives. Mixed cryoglobulinaemia (MC) and autoimmune chronic hepatitis (AI-CH) are frequently associated with hepatitis C virus (HCV) chronic infection. Because HCV represents a possible common aetiological factor, the aim of the present study is to investigate the clinico-serological alterations of both MC and AI-CH and to verify a possible overlap between these disorders.

Setting. Patients from three tertiary referral centres.

Subjects. Two Italian series of 88 MC patients and 30 AI-CH type 1 were studied.

Results. MC and AI-CH share several clinico-sero-logical features. The patients' mean age (MC vs. AI-CH: 60 ± 9 vs. 57 ± 13 years), disease duration (10.5 ± 5 vs. 9.6 ± 6 years), and female/male ratio (3.4 vs. 3.3) were very similar in the two series. Typical hallmarks of MC, i.e. purpura, arthralgias, and weakness, circulating mixed cryoglobulins with rheumatoid factor activity, and hypocomplement-emia were also recorded in a significant number of AI-CH patients. Similarly, chronic active hepatitis was found in 68% of MC patients and its histological and serological alterations were comparable with those of AI-CH; moreover, amongst various auto-antibodies, antinuclear antibodies and/or anti-smooth-muscle antibodies were detected in half of the cases of MC. Anti-HCV antibodies, detected by second-generation Chiron elisa and riba, were present in a high percentage of both MC and AI-CH (94 vs. 80%), and frequently associated with HCV viraemia (86 vs. 77%). Finally, anti-GOR, the HCV-related autoantibodies, were found in half cases of MC and AI-CH.

Conclusions. On the whole, these data suggest that HCV in combination with other infectious and environmental and genetic factors can trigger a complex immunological disorder with different clinical patterns.

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