Comparison of the effect of orally administered soluble beta-(1-3),(1-6)-D-glucan and of G-CSF on the recovery of murine hematopoiesis.
Beta-glucans are branched fungal polysaccharide compounds with pleiotropic activating effects on cells of the immune and the hematopoietic system. In this study, the hematopoiesis-promoting effect of an orally administered soluble beta-(1-3),(1-6)-D-glucan and of intravenously (i.v.) injected recombinant human granulocyte colony-stimulating factor (G-CSF/filgrastim) was tested in cyclophosphamide (CY)-conditioned mice. Both agents were administered for 5 consecutive days following treatment with CY. When G-CSF and the carbohydrate compound were co-administered, a small but non-significant increase of granulopoiesis compared to G-CSF alone was detected. beta-Glucan alone failed to augment granulopoiesis in the peripheral blood of CY-treated mice. However, both G-CSF and beta-glucan significantly enhanced the recovery of monocytes in the peripheral blood of leukopenic mice when orally administered as single agents. In conclusion, the present study provides further evidence of a stimulatory function of orally administered beta-glucans on monocyte production and shows a weak additive effect on granulopoiesis when co-administered with G-CSF into leukopenic mice.
Harnack
Ulf
U
Medical Clinic of Oncology and Hematology, Charité-Universitätsmedizin Berlin, Campus Mitte, 10117 Berlin, Germany.
Eckert
Klaus
K
Fichtner
Iduna
I
Pecher
Gabriele
G
D000276:Adjuvants, Immunologic / Q000494:pharmacology*; D000284:Administration, Oral; D000818:Animals; D001854:Bone Marrow Cells / Q000187:drug effects; D003520:Cyclophosphamide / Q000494:pharmacology; D005260:Female; D016179:Granulocyte Colony-Stimulating Factor / Q000494:pharmacology*; D006410:Hematopoiesis / Q000187:drug effects*; D006412:Hematopoietic Stem Cells / Q000187:drug effects*; D006801:Humans; D007166:Immunosuppressive Agents / Q000494:pharmacology; D007970:Leukopenia / Q000139:chemically induced / Q000188:drug therapy; D051379:Mice; D008810:Mice, Inbred C57BL; D008811:Mice, Inbred DBA; D011994:Recombinant Proteins; D019172:Transplantation Conditioning; D047071:beta-Glucans / Q000494:pharmacology*
D000276:Adjuvants, Immunologic; D007166:Immunosuppressive Agents; D011994:Recombinant Proteins; D047071:beta-Glucans; D016179:Granulocyte Colony-Stimulating Factor; C064197:beta-1,6-glucan; D003520:Cyclophosphamide