Related Experiment Videos
[OK-432-induced cytokines production by peripheral blood mononuclear cells]
Abstract:
Cytokines production by OK-432-stimulated peripheral blood mononuclear cells (PBMC) were measured to investigate the in vitro function of macrophages (M phi) and lymphocytes. PBMC (1 x 10(6) cells/ml) were cultured with OK-432 (0.05 KE/ml) for 72 hr at 37 degrees C under 5% CO2, then interleukin 1 beta (IL-1 beta), interleukin 2 (IL-2) and soluble IL-2 receptor (sIL-2R) levels in the culture supernatants were measured by ELISA. While there was no significant differences of IL-1 beta production between patients with chronic active hepatitis type B (CAH-B) and controls, sIL-2R production (335 +/- 219 U/ml, mean +/- SD) was significantly decreased (p < 0.001) in patients with CAH-B. On the other hand, in pregnant women, production of both IL-1 beta (6.3 +/- 3.9 ng/ml, p < 0.01) and sIL-2R (300 +/- 169 U/ml, p < 0.001) were significantly lower than those in controls (13.5 +/- 3.8 ng/ml, 969 +/- 154 U/ml). These results suggest that the expression of IL-2R alpha on lymphocytes membrane is suppressed in patients with CAH-B, and that decreased M phi function is present in pregnant women.
Insights
This study found lower soluble IL-2 receptor (sIL-2R) in chronic active hepatitis B patients, suggesting suppressed lymphocyte function. Pregnant women also showed reduced IL-1 beta and sIL-2R, indicating potential macrophage dysfunction.
Area of Science:
- Immunology
- Cell Biology
Context:
- Investigating immune cell function is crucial for understanding disease pathogenesis and physiological states.
- Peripheral blood mononuclear cells (PBMC) are key components of the immune system, including macrophages and lymphocytes.
- OK-432 stimulation is a method to activate immune cells in vitro.
Purpose:
- To assess the in vitro function of macrophages (M phi) and lymphocytes by measuring cytokine production.
- To compare cytokine profiles in patients with chronic active hepatitis type B (CAH-B) and pregnant women against healthy controls.
Summary:
- PBMCs were stimulated with OK-432 and cultured, with subsequent measurement of interleukin-1 beta (IL-1 beta), interleukin-2 (IL-2), and soluble IL-2 receptor (sIL-2R) levels.
- Patients with CAH-B showed significantly decreased sIL-2R production compared to controls, indicating suppressed IL-2 receptor alpha expression on lymphocytes.
- Pregnant women exhibited significantly lower production of both IL-1 beta and sIL-2R compared to controls, suggesting decreased macrophage function.
Impact:
- The findings suggest impaired lymphocyte function in CAH-B patients.
- Results indicate potential macrophage dysfunction in pregnant women.
- This research contributes to understanding immune dysregulation in specific clinical conditions.