Jichu yixue yu linchuang (Apr 2022)
Changes of BMP-2 and BMP-4 in early phase of sepsis
Abstract
Objective To study the change of serum bone morphogenetic protein (BMP)-2 and BMP-4 during the development of sepsis and its mechanisms. Methods Blood was collected for quantifying serum BMP-2 and BMP-4 from patients with sepsis (sepsis group), patients without sepsis (non-sepsis group) in 24 hours of ICU admission and from healthy volunteers (control group). Concentration of serum BMP-2 and BMP-4 was determined by ELISA. The expression of BMP-2, pSmad1/5, and BMPRⅡ of lip polysaccharide (LPS)-treated rat pulmonary microvascular endothelial cells (RPMECs) was detected by Western blot. Results Serum BMP-2 and BMP-4 were significantly increased in sepsis group (P<0.05) and the level of BMP-2 was significantly higher in sepsis group than that in non-sepsis group (P<0.05). BMP-2 was found to be a marker for differential diagnosis of separating sepsis LPS may significantly increase the expression of BMP-2 of RPMECs but decrease the expression of phosphorylated Smad1/5 (pSmad1/5) and BMP receptor Ⅱ (BMPRⅡ) (P<0.05). Conclusions BMP-2 is a potential diagnostic marker and act as apro-inflammatory factor in early phase of sepsis.
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