Abstract：
OBJECTIVE:To investigate the compositions of Th1/Th2/Th3 cells in chronic hepatitis B virus (HBV)-infected individuals by determining the expression of interleukin-4 (IL-4), inetrferon-gamma (IFN-gamma), and transform growth factor-beta (TGF-beta) in single CD4(+) T cells isolated from peripheral blood mononuclear cells (PBMCs) and the role of polarized Th cell populations in chronic HBV-infection was discussed. METHODS:PBMCs from chronically infected HBV individuals were isolated, stimulated by PMA/Ionomycin/Monensin, and IL-4, IFN-gamma and TGF-beta production by CD4(+) T cells was determined by using fluorescence activated cell sorter (FACS) analysis. RESULTS:The percentage of IFN-gamma-producing T cells, IL-4-producing T cells and TGF-beta-producing T cells ranged from 2.3% - 18.6%, 1.1% - 8.7% and 0.7% - 7.1% respectively in CD4(+) T cells from non-infected individuals. Most of CD4(+) T cells from PBMCs in chronically infected HBV individuals were Th0 cells. The proportion of Th1 cells increased significantly with hepatic inflammatory activity, and in the active period of chronic hepatitis B infection were higher than those in the non-active period (P < 0.05). Th2 cell percentage in CD4(+) T cells from HBV-infected individuals did not differ significantly (P > 0.05), but were higher than that from controls (P < 0.05). Th3 cell percentage in CD4(+) T cells from asymptomatic carrier (AsC) group was higher than that in the chronic hepatitis B (CHB) and control groups (P < 0.05). CONCLUSIONS:Th1 phenotype cytokines were positively correlated with hepatic inflammatory activity in chronic hepatitis B and Th2 cells may be associated with the persistence of HBV infection. Th3 cells cooperating with Th2 cells can negatively regulate immune responses and may be associated with the immune tolerant state of chronic HBV infection.
journal_name
Chin Med J (Engl)journal_title
Chinese medical journalauthors
Jiang R,Feng X,Guo Y,Lu Q,Hou J,Luo K,Fu Nkeywords:
subject
Has Abstractpub_date
2002-03-01 00:00:00pages
422-4issue
3eissn
0366-6999issn
2542-5641journal_volume
115pub_type
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journal_title：Chinese medical journal
pub_type： 杂志文章
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更新日期：2002-07-01 00:00:00
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更新日期：1999-07-01 00:00:00
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journal_title：Chinese medical journal
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doi：
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doi：
更新日期：2011-02-01 00:00:00
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doi：
更新日期：2012-08-01 00:00:00
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journal_title：Chinese medical journal
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journal_title：Chinese medical journal
pub_type： 杂志文章
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