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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
[PD-1/PD-L1 expressions in liver tissues of patients with chronic HBV infection].
OBJECTIVE: To detect and compare the PD-1/PD-L1 (programmed death 1/programmed death 1 ligand) expressions in the liver tissues of chronic HBV infection patients in immune tolerant phase and those in immune clearance phase.
METHODS: Liver biopsy samples were divided into two groups: 25 samples from patients in immune clearance phase and 19 samples from patients in immune tolerant phase. PD-1/PD-L1 expressions on T lymphocytes in these liver biopsy specimens were detected by immunohistochemistry method. Percentage of PD-1/PD-L1 positive cells among CD3 positive cells was calculated by semi-quantitative evaluation. Differences between the two groups were statistically analyzed.
RESULTS: PD-1/PD-L1 expressions were significantly higher in the patients in immune tolerant phase as compared to that in immune active phase (P < 0.05). No statistical difference found between the two groups for PD-L1 expression in Kupffer cells (P > 0.05).
CONCLUSION: PD-1/PD-L1 expression level can reflect the immune functions of chronic hepatitis B patients.
METHODS: Liver biopsy samples were divided into two groups: 25 samples from patients in immune clearance phase and 19 samples from patients in immune tolerant phase. PD-1/PD-L1 expressions on T lymphocytes in these liver biopsy specimens were detected by immunohistochemistry method. Percentage of PD-1/PD-L1 positive cells among CD3 positive cells was calculated by semi-quantitative evaluation. Differences between the two groups were statistically analyzed.
RESULTS: PD-1/PD-L1 expressions were significantly higher in the patients in immune tolerant phase as compared to that in immune active phase (P < 0.05). No statistical difference found between the two groups for PD-L1 expression in Kupffer cells (P > 0.05).
CONCLUSION: PD-1/PD-L1 expression level can reflect the immune functions of chronic hepatitis B patients.
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