title: [Effects of astragalus and angelica on bone marrow stem cells proliferation and VEGF protein expression in vitro].
abstract: OBJECTIVE
  To observe the effects of Astragalus and Angelica on bone marrow stem cells (BMSU) proliteratlon mn vitro and investigate its possible mechanism.
  
  
  METHODS
  Five 200 to 220 g SD rats were fed with a high fat diet for 4 weeks and given 30 mg/kg streptozotocin (STZ) twice develop type II diabetes from July 2009 to February 2010. The rats with blood glucose concentrations of 16.7 mmol/L or more were considered diabetic. Bone Marrow Stem Cells (BMSC) were collected and isolated by density gradient centrifugation. The BMSC were divided into 4 groups,including empty control group, Astragalus group, Angelica group and Astragalus plus Angelica group. DMEM of 100 microl was added in empty control group. DMEM of 100 microl containing Astragalus (1100 mg/L), Angelica (1100 mg/L) and Astragalus (1100 mg/L) combine with Angelica(220 mg/L) were added in Astragalus group, Angelica group and Astragalus plus Angelica group respectively. The cell proliferation was detected by MTT method, and the concentration of VEGF in the supernatant was determined by ELISA. The VEGF expression was analyzed by Western Blot after 14 days incubation.
  
  
  RESULTS
  The BMSC proliferation and the VEGF concentration in the supernatant and the BMSC VEGF protein expression significantly increased in Astragalus group and Astragalus plus Angelica group compared to those of empty control group (P < 0.05 or P < 0.01). The above effects were more strong in Astragalus plus Angelica group (P < 0.05).
  
  
  CONCLUSIONS
  Astragalus with Angelica or used separately could promote BMSC proliferation. The mechanism might induce the VEGF protein expression in BMSC. And the independent use of Angelica has no above effect.
authors.affiliation: Department of Pathophysiology, Wenzhou Medical College, Wenzhou 325000, Zhejiang, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Shen
authors.forename: Lei
authors.initials: L
authors.lastname: Chen
authors.forename: Kai
authors.initials: K
authors.lastname: Zhou
authors.forename: Ke-ke
authors.initials: KK
authors.lastname: Jin
mesh_terms: D029969:Angelica; D000818:Animals; D027883:Astragalus Plant; D001854:Bone Marrow Cells / Q000166:cytology / Q000187:drug effects*; D049109:Cell Proliferation / Q000187:drug effects*; D003921:Diabetes Mellitus, Experimental / Q000188:drug therapy*; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000187:drug effects*; D008297:Male; D010936:Plant Extracts / Q000494:pharmacology*; D051381:Rats; D017207:Rats, Sprague-Dawley; D042461:Vascular Endothelial Growth Factor A / Q000032:analysis*
chemical_list: D010936:Plant Extracts; D042461:Vascular Endothelial Growth Factor A