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Z B Lin

Publications and source records attributed to Z B Lin.

7 recordsLinked to original sources
PubMed1992

Effect of Ganoderma polysaccharides on T cell subpopulations and production of interleukin 2 in mixed lymphocyte response.

Mixed lymphocyte response was used as a main model through all the experiments In a series of concentrations (25, 50, 100, and 200 micrograms/ml), Ganoderma polysaccharides (GL-B) promoted the production of interleukin 2 (IL-2) in a concentration-dependent manner after initiation of culture for 12 h and increased the total cell recovery as well as that of Lyt 2+ and L3T4+ cells after 4 days of culture. The data also show that the polysaccharides markedly enhanced the cytotoxicity of cytotoxic T lymphocytes, which was increased by 100% at the concentration of 200 micrograms/ml.

Animals↗
PubMed1992

[Effect of Tremella polysaccharide on IL-2 production by mouse splenocytes].

Tremella polysaccharide (TP) is an important component isolated from Tremella fuciformis Berk. In this study, the in vitro effect of TP on IL-2 production was examined in activated mouse splenocytes. TP (1, 5, 10 and 50 micrograms/ml) significantly increased mouse splenocyte IIL-2 production. In aged mice, the level of IL-2 production is much lower than that in young controls. TP (0.05, 0.5 and 5 micrograms/ml) restored the IL-2 production to normal level as the young control. Furthermore, TP (0.05, 0.5 and 5 micrograms/ml) was found to partly antagonize the suppressive effect of hydrocortisone on IL-2 production. The antagonistic effect of TP (5 micrograms/ml) on the inhibitory activity of cyclosporin A was also observed.

Animals↗
PubMed1990

[Effects of the polysaccharides isolated from mycelium and fermentation fluid of Schizophyllum commune on immune function in mice].

SPG1 and SPG2 are polysaccharides extracted respectively from fermented cultural mycelium and fermentation fluid of Schizophyllum commune. This paper reports the effect of SPG1 and SPG2 on concanavalin A (Con A) induced proliferation of lymphocyte from C57BL/6J mice in vitro. SPG1 (10, 25, 50 and 100 micrograms/ml) and SPG2 (10, 50 and 100 micrograms/ml) was found to significantly increase lymphocyte proliferation. In addition, SPG1 (10, 25, 50 and 75 micrograms/ml) antagonized the suppressive effect of hydrocortisone on proliferation of mouse spleen cells, while SPG2 did not. In vivo, at the dose of 2.5 and 5.0 mg/kg ip for 9 days, SPG1 and SPG2 remarkably enhanced the delayed-type hypersensitivity to 2, 4-dinitrochlorobenzene (DNCB) in mice. SPG1 (1.25, 2.5 and 5.0 mg/kg, ip for 1 day) and SPG2 (2.5 and 5.0 mg/kg, ip for 1 day) promoted the plaque forming cell (PFC) response to sheep red blood cells (SRBC) in mice. The effects of SPG1 and SPG2 on immune function were studied in aged immunodeficient mice. SPG1 (10 and 25 micrograms/ml) and SPG2 (25 micrograms/ml) was found to enhance the Con A induced lymphocyte proliferation in 14 months aged mice. At the dose of 2.5 mg/kg, SPG1 and SPG2 produced respectively 162.1 and 136.0% increase in PFC response in 14 months aged mice.

Animals↗
PubMed1989

Effects of Tremella polysaccharides on immune function in mice.

It was found in vitro that Tremella polysaccharides (TP) (50, 100, 150 and 200 micrograms/ml) augmented lymphocyte proliferation induced by Con A and did not antagonize the suppressive effect of hydrocortisone on lymphocyte proliferation. In vivo TP promoted the plaque-forming cell (PFC) response to SRBC in mice. TP 50 and 100 mg/kg ip for 5 d produced 77.6% and 81.8% increases in PFC response respectively. At the doses of 150 and 200 micrograms/ml, TP decreased the interleukin 2 (IL-2) activities in the supernatant of culture media of mouse spleen cells. TP (50 micrograms/ml) enhanced the lymphocyte proliferation induced by Con A and increased the PFC response to SRBC by 47.1% in 14-month-old mice.

Animals↗