title: G-CSF enhanced SDF-1 gradient between bone marrow and liver associated with mobilization of peripheral blood CD34+ cells in rats with acute liver failure.
abstract: The role of stromal cell-derived factor-1 (SDF-1) in modulating massive liver damage is not well known. In this study, expression of SDF-1 in bone marrow and liver was investigated in rats with acute liver failure (ALF) when mobilized using granulocyte colony-stimulating factor (G-CSF). ALF was induced in rats by D-galactosamine (D-GalN). Starting after 2 hours following D-GalN induction, the animals were injected with G-CSF 50 microg/kg daily or saline as placebo for 5 days. The percentages of CD34+ cells in peripheral blood and the expression of SDF-1 in bone marrow and liver were then determined. The percentages of peripheral CD34+ cells demonstrated a transient increase in placebo rats following D-GalN induction and a significant increase in rats after G-CSF administration. SDF-1 expression showed a transient decrease in bone marrow and a transient increase in liver tissue from placebo rats. However, a significant decrease of SDF-1 expression in bone marrow and a remarkable increase in liver tissue were observed in animals from the G-CSF group. It was concluded that G-CSF can enhance the reduced expression of SDF-1 in bone marrow and increased expression in liver in ALF rats, forming a greater SDF-1 gradient, and chemoattracting CD34+ cells' migration from bone marrow to an injured liver.
authors.affiliation: Department of Infectious Diseases, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, People's Republic of China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Lei
authors.forename: Zhengwen
authors.initials: Z
authors.lastname: Liu
authors.forename: Qunying
authors.initials: Q
authors.lastname: Han
authors.forename: Wen
authors.initials: W
authors.lastname: Kang
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Sai
authors.initials: S
authors.lastname: Lou
mesh_terms: D000818:Animals; D018952:Antigens, CD34 / Q000378:metabolism*; D001773:Blood Cells / Q000187:drug effects / Q000378:metabolism*; D001853:Bone Marrow / Q000187:drug effects / Q000378:metabolism*; D054377:Chemokine CXCL12 / Q000096:biosynthesis* / Q000187:drug effects; D004195:Disease Models, Animal; D005260:Female; D016179:Granulocyte Colony-Stimulating Factor / Q000494:pharmacology*; D019650:Hematopoietic Stem Cell Mobilization; D008099:Liver / Q000187:drug effects / Q000378:metabolism / Q000473:pathology; D017114:Liver Failure, Acute / Q000139:chemically induced / Q000378:metabolism* / Q000517:prevention & control; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D018952:Antigens, CD34; D054377:Chemokine CXCL12; D016179:Granulocyte Colony-Stimulating Factor