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Detection of tissue T-cell in patients with chronic active hepatitis using fragmented sheep red blood cell (SRBC)
Abstract:
Fragmented sheep red blood cell (SRBC) membrane was used for detection of T-cells in liver biopsy specimens from patients with chronic active hepatitis. SRBC was separated with Lymphoprep, sonicated, then filtered through a 3 mu Millipore-membrane as a fragmented SRBC reagent. Tissue T-cells were stained by an indirect immunofluorescent technique using SRBC reagent and fluorescein isothiocyanate (FITC)-labelled rabbit anti-SRBC. Positively staining lymphocytes were present in portal tracts and in areas of piecemeal necrosis. There also seemed to be a positive correlation between the number of positively staining lymphocytes and the activity of chronic hepatitis; numerous lymphocytes being stained in areas of severe piecemeal necrosis. Our findings suggest that the fragmented SRBC technique for detection of T-cells is reliable and reproducible, that it could be used as a clinical routine method, and that it is useful for further elucidating the nature of host immune reactions on tissue levels.
Insights
This study introduces a reliable fragmented sheep red blood cell (SRBC) method for detecting T-cells in chronic hepatitis liver biopsies. The technique correlates T-cell presence with disease activity, aiding immune response understanding.
Area of Science:
- Immunology
- Hepatology
- Cell Biology
Background:
- Chronic active hepatitis involves complex immune responses in the liver.
- Accurate detection of specific immune cells, like T-cells, is crucial for understanding disease pathogenesis.
- Existing methods for T-cell detection in liver biopsies may have limitations.
Purpose of the Study:
- To evaluate the efficacy of a novel fragmented sheep red blood cell (SRBC) technique for detecting T-cells in liver biopsy specimens.
- To correlate T-cell presence and density with the activity of chronic hepatitis.
- To establish a reproducible method for T-cell detection in clinical settings.
Main Methods:
- Fragmented SRBC reagent was prepared using sonication and filtration.
- T-cells in liver biopsy specimens were identified using an indirect immunofluorescence technique.
- FITC-labelled rabbit anti-SRBC was used for staining, with SRBC reagent for T-cell detection.
Main Results:
- Positively staining lymphocytes, indicative of T-cells, were observed in portal tracts and areas of piecemeal necrosis.
- A positive correlation was found between the number of T-cells and the severity of chronic hepatitis activity.
- The fragmented SRBC technique demonstrated reliability and reproducibility.
Conclusions:
- The fragmented SRBC technique is a reliable and reproducible method for T-cell detection in liver biopsies.
- This method can be utilized as a routine clinical tool for assessing chronic hepatitis.
- The technique aids in further understanding host immune reactions at the tissue level in liver disease.