31 May 2017 : Animal Research
Granulocyte-Colony Stimulating Factor (G-CSF) Accelerates Wound Healing in Hemorrhagic Shock Rats by Enhancing Angiogenesis and Attenuating ApoptosisHong Huang123ABCDEF, Qi Zhang123BCF, Jiejie Liu12BCF, Haojie Hao12AE, Chaoguang Jiang12AEF, Weidong Han12AFG*
Med Sci Monit 2017; 23:2644-2653
BACKGROUND: Following severe trauma, treatment of cutaneous injuries is often delayed by inadequate blood supply. The aim of the present study was to determine whether granulocyte-colony stimulating factor (G-CSF) protects endothelial cells (ECs) and enhances angiogenesis in a rat model of hemorrhagic shock (HS) combined with cutaneous injury after resuscitation.
MATERIAL AND METHODS: The HS rats with full-thickness defects were resuscitated and randomly divided into a G-CSF group (200 μg/kg body weight), a normal saline group, and a blank control group. Histological staining was to used estimate the recovery and apoptosis of skin. Apoptosis- and angiogenesis-related factors were analyzed by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot (WB). Scratch assay, tube formation, and WB experiments were performed to verify the functional effects of G-CSF on HUVECs in vitro.
RESULTS: H&E staining and Masson trichrome staining showed earlier inflammation resolution and collagen synthesis in the G-CSF-treated group. Angiogenesis-related factors were elevated at mRNA and protein levels. TUNEL staining suggested fewer apoptotic cells in the G-CSF group. The apoptotic-related factors were down-regulated and anti-apoptotic factors were up-regulated in the G-CSF-treated group. Scratch assay and tube formation experiments revealed that G-CSF facilitated migration ability and angiogenic potential of HUVECs. The angiogenic and anti-apoptotic effects were also enhanced in vitro.
CONCLUSIONS: Our results suggest that G-CSF after resuscitation attenuates local apoptosis and accelerates angiogenesis. These findings hold great promise for improving therapy for cutaneous injury in severe trauma and ischemia diseases.
Keywords: Angiogenesis modulating agents, endothelial cells, Receptors, Granulocyte Colony-Stimulating Factor
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