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Current seroepidemiology of hepatitis D virus infection among hepatitis B surface antigen carriers of general and high‐risk populations in Taiwan

Chen, Chien‐Jen ; Tseng, Su‐Feng ; Lu, Chih‐Feng ; [et al.]

Wiley ; 1992

In: Journal of Medical Virology Vol. 38, No. 2 ( 1992-10), p. 97-101

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In: Journal of Medical Virology, Wiley, Vol. 38, No. 2 ( 1992-10), p. 97-101

Abstract: In order to assess the current seroepidemiology of hepatitis D virus (HDV) infection in Taiwan where hepatitis B virus (HBV) is hyperendemic, a total of 756 voluntary blood donors, 641 prostitutes, 1,014 patients with sexually transmitted diseases (STDs), and 628 drug abusers were studied. Radioimmunoassays were used for testing HBV infection markers and antibody against HDV (anti‐HDV) among HBsAg carriers. The anti‐HDV prevalence among HBsAg carriers was significantly higher in STD patients (9.6%), prostitutes (33.1%), and drug abusers (68.1%) than in blood donors from the general population (2.2%). The prevalence gradually increased with age in blood donors and STD patients, but reached a plateau at a young age in prostitutes and drug abusers. Males had a higher prevalence than females in blood donors (2.7% vs. 0), STD patients (8.2% vs. 7.5%), and drug abusers (69.0% vs. 57.1%), but the difference was not statistically significant. STD patients with syphilis had a higher prevalence (19.5%) than those affected with non‐ulcerating STDs (5.3%). While unlicensed prostitutes had a lower prevalence (1 3.6%) than licensed prostitutes (44.9%), intravenous drug abusers had a higher prevalence (73.1%) than non‐intravenous drug abusers (34.6%). There was a twofold increase in anti‐HDV prevalence from 1986 to 1989 among prostitutes, but the prevalence remained unchanged in the general population and drug abusers. HDV infection remains limited to the high‐risk groups and spread mainly by promiscuity and needle sharing in Taiwan. © 1992 Wiley‐Liss, Inc.

Type of Medium: Online Resource

ISSN: 0146-6615 , 1096-9071

URL: Issue

URL: Article

DOI: 10.1002/jmv.v38:2

DOI: 10.1002/jmv.1890380205

RVK:

XA 10000

Language: English

Publisher: Wiley

Publication Date: 1992

detail.hit.zdb_id: 752392-0

detail.hit.zdb_id: 1475090-9

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Genotype distribution of hepatitis C virus infection in Taiwan

Wu, Jau‐Shin ; Lee, Han‐Fang ; Hsiau, Hui‐Ling ; [et al.]

Wiley ; 1994

In: Journal of Medical Virology Vol. 44, No. 1 ( 1994-09), p. 74-79

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In: Journal of Medical Virology, Wiley, Vol. 44, No. 1 ( 1994-09), p. 74-79

Abstract: To investigate the prevalence of genotype distribution of hepatitis C virus (HCV) infection in Taiwan, genotypes were identified in 122 (36 anti‐HCV‐positive blood donors, 44 anti‐HCV‐positive aborigines, 28 hemodialysis patients, and 14 patients with chronic liver diseases) of 280 subjects, using polymerase chain reaction by Okamoto's type‐specific primer method. Type II was the dominant (66.7%) type among anti‐HCV‐positive blood donors, followed by type III and type IV with the same percentages (16.7%), while none of type I was detected. The prevalence of genotype distribution were 75.0%, 81.1%, and 64.3% for type 11,4.6%, 17.9%, and 21.4% for type III, 13.6%, 0%, and 7.1% for type IV, for the aborigines, hemodialysis, and chronic liver diseases groups, respectively. Four subjects revealed mixed infections by two different genotypes: two cases of II and III; and each one case of II and IV, and III and IV. Diverse genotype distributions in two hemodialysis groups disclose the existence of obvious regional differences even within a region. The results reveal the highest prevalence of type II as in Japan. However, there is a higher prevalence rate of type IV than in Japan. © 1994 Wiley‐Liss, inc.

Type of Medium: Online Resource

ISSN: 0146-6615 , 1096-9071

URL: Issue

URL: Article

DOI: 10.1002/jmv.v44:1

DOI: 10.1002/jmv.1890440114

RVK:

XA 10000

Language: English

Publisher: Wiley

Publication Date: 1994

detail.hit.zdb_id: 752392-0

detail.hit.zdb_id: 1475090-9

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Generation and molecular analyses of two rheumatoid synovial fluid–derived IgG rheumatoid factors

Lu, Edward W. ; Deftos, Michael ; Olee, Tsaiwei ; [et al.]

Wiley ; 1993

In: Arthritis & Rheumatism Vol. 36, No. 7 ( 1993-07), p. 927-937

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In: Arthritis & Rheumatism, Wiley, Vol. 36, No. 7 ( 1993-07), p. 927-937

Abstract: Objective. To study the Ig genes that encode IgG rheumatoid factor (IgG‐RF) from rheumatoid synovial fluid. Methods. We used rheumatoid synovial fluid B cells to generate IgG‐RF–secreting hybridomas. We then characterized their binding properties and determined their nucleotide sequences. Results. Two monospecific IgG‐RFs were obtained. Sequence analysis of the RFs revealed a new Vλ gene family (designated Vλ9) and extensive somatic diversification, including a duplication‐insertion of 18 nucleotides (6 amino acid residues) into a hypervariable region. Conclusion. The data provide further support for an antigen‐driven response in the sustained production of potentially pathogenic IgG‐RFs in rheumatoid synovium.

Type of Medium: Online Resource

ISSN: 0004-3591 , 1529-0131

URL: Issue

URL: Article

DOI: 10.1002/art.v36:7

DOI: 10.1002/art.1780360709

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XA 10000

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XA 30325

Language: English

Publisher: Wiley

Publication Date: 1993

detail.hit.zdb_id: 2014367-9

detail.hit.zdb_id: 127294-9

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A nested case‐control study on association between hepatitis C virus antibodies and primary liver cancer in a cohort of 9,775 men in Taiwan

Chang, Chao‐Chin ; Yu, Ming‐Whei ; Lu, Chih‐Feng ; [et al.]

Wiley ; 1994

In: Journal of Medical Virology Vol. 43, No. 3 ( 1994-07), p. 276-280

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In: Journal of Medical Virology, Wiley, Vol. 43, No. 3 ( 1994-07), p. 276-280

Abstract: Most studies on the association between antibodies against hepatitis C virus (anti‐HCV) and primary liver cancer (PLC) were limited to case‐series, or cross‐sectional case‐control studies leaving a controversy on causal temporality. A nested case‐control study on 38 newly‐developed PLC patients and 152 matched controls selected from a cohort of 9,775 men in Taiwan recruited from September, 1984, to February, 1986, was carried out to examine the relation between HCV infection and PLC. Case‐control pairs were matched on age (±1 year), residence, and the date at recruitment. Serum samples collected from study subjects at the initial recruitment were examined for anti‐HCV by enzyme immunoassay and hepatitis B surface antigen (HBsAg) by reverse passive hemagglutination assay combined with radioimmunoassay. History of cigarette smoking, alcohol consumption, vegetable consumption, vegetarian habit, and chronic liver diseases were also obtained through standardized interviews according to a structured questionnaire at the recruitment. After adjusting for HBsAg status and other risk factors, the anti‐HCV was significantly associated with the development of PLC showing a multivariate‐adjusted relative risk of 88.24. The results suggest that HCV infection may play an important role in the etiology of human PLC in Taiwan. © 1994 Wiley‐Liss, Inc.

Type of Medium: Online Resource

ISSN: 0146-6615 , 1096-9071

URL: Issue

URL: Article

DOI: 10.1002/jmv.v43:3

DOI: 10.1002/jmv.1890430315

RVK:

XA 10000

Language: English

Publisher: Wiley

Publication Date: 1994

detail.hit.zdb_id: 752392-0

detail.hit.zdb_id: 1475090-9

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