Astragalus Polysaccharide Promotes the Release of Mature Granulocytes Through the L-selectin Signaling Pathway

Overview

Journal Chin Med

Publisher Biomed Central

Specialty Biomedical Engineering

Date 2015 Jul 11

PMID 26161135

Citations 3

Authors

Ping-Ping Zhang

Zhao-Ting Meng

Liu-Chun Wang

Lei-Ming Guo

Kai Li

Affiliations

Soon will be listed here.

Abstract

Background: This study aims to investigate the leukogenic effect of astragalus polysaccharide (APS), to compare its effect of increasing the numbers of mature granulocytes with that of granulocyte colony-stimulating factor (G-CSF), and to investigate the mechanism.

Methods: Rats were arbitrarily grouped into four groups (control, cyclophosphamide (CTX), CTX + APS, and CTX + G-CSF groups), and each group was then arbitrarily divided into five subgroups according to the time period since CTX infusion (0, 4, 7, 10, and 14 days). The expression of leukocyte selectin (L-selectin), its ligand, and shedding-related protease on granulocytes was analyzed. Leukocyte counts were obtained. Chemotactic capacity of polymorphonuclear leukocytes (PMNLs) was assessed.

Results: Both APS and G-CSF restored the expression of L-selectin, P-selectin glycoprotein ligand-1 (PSGL-1), CD11b/CD18, and ADAM17 to normal levels (P > 0.05 vs. control group on each time point), with APS eliciting a greater effect than G-CSF (P = 0.005 on day 7, P < 0.001 on day 10 and 14 for L-selectin; P = 0.038 on day 7, P = 0.001 on day 10, P < 0.001 on day 14 for PSGL-1; P < 0.001 on day 7, 10 and 14 for ADAM17; P < 0.001 on day 7, 10, and 14 for CD11b/CD18). The percentages of the bands and segmented bone marrow (BM) cells in myeloid neutrophils were higher in the CTX + APS group than in the CTX group on day 7 (P = 0.030) and reached normal levels on day 10 (P = 0.547) and 14 (P = 0.431) vs. control group. The ability of APS to increase numbers of PMNLs in peripheral blood after chemotherapy was significantly superior to that of G-CSF 7 days after chemotherapy (P = 0.029 on day 10, P = 0.006 on day 14). Moreover, APS more significantly improved the chemotactic ability of PMNLs among mature BM granulocytes and peripheral blood neutrophils after chemotherapy than did G-CSF (P < 0.001 on day 7, P = 0.001 on day 10 and P = 0.005 on day 14).

Conclusions: APS promoted the differentiation and chemotactic ability of BM granulocytes via the L-selectin signaling pathway.

Citing Articles

Astragalus polysaccharide: a review of its immunomodulatory effect.

Li C, Liu Y, Zhang Y, Li J, Lai J Arch Pharm Res. 2022; 45(6):367-389.

PMID: 35713852 DOI: 10.1007/s12272-022-01393-3.

Immunomodulatory effect of polysaccharides in cyclophosphamide-induced immunocompromised mice.

Yu J, Cong L, Wang C, Li H, Zhang C, Guan X Exp Ther Med. 2018; 15(6):4755-4762.

PMID: 29805493 PMC: 5958660. DOI: 10.3892/etm.2018.6073.

Anti-Aging Implications of (Huangqi): A Well-Known Chinese Tonic.

Liu P, Zhao H, Luo Y Aging Dis. 2018; 8(6):868-886.

PMID: 29344421 PMC: 5758356. DOI: 10.14336/AD.2017.0816.

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