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Serum metabolomic profiles reveal the impact of BuZangTongLuo formula on metabolic pathways in diabetic mice with hindlimb ischemia

Authors Zheng, Junping; Guo, Yanlei; Hu, Baifei; Zhu, Lin; Yang, Yong; Li, Shengrong; Li, Na; Liu, Hongtao

Journal JOURNAL OF ETHNOPHARMACOLOGY , JAN 21 2009,2:121

DOI 10.1016/j.jep.2008.10.032 PubMed 19041702

Abstract Ethnopharmacological relevance: BuZangTongLuo Formula (BZTLF) was the decoction of eight traditional Chinese medicines including Astragalus membranaceus, Dioscorea opposita, Salvia miltiorrhiza, Scrophularia ningpoensis, Ophiopogon japonicus, Panax ginseng, Fritillariae cirrhosae and Whitmania pigra. This formula has been used as an effective remedy for treatment of diabetic ischemia clinically.Aim of the study: In previous study, we have reported the therapeutic effect of BZTLF on diabetic vascular dysfunction. However, it remains obscure about the role of metabolic pathways in BZTLF-initiated improvement on hindlimb ischemia.Materials and methods: Diabetic mice with hindlimb ischemia were orally administrated with BZTLF by gavage. The serum samples were prepared for untargeted metabolomic analysis by ultra-performance liquid chromatography-mass spectrometer. The metabolic network was built by integrating metabolite data with the Gene Expression Omnibus (GEO) dataset (GSE3313). Further, quantitative PCR was used to confirm the key target genes.Results: BZTLF treatment remarkably led to the reversal of changed metabolite levels in serum of diabetic mice with hindlimb ischemia, which mainly derived from bacteria, plant and signaling molecules. Also, BZTLF reshaped the metabolic pathways, especially those responsible for metabolism of lipid, gluthanine and tryptophan. In addition, BZTLF led to the reduction of lysophosphatidic acids (LPAs) and increment of triglycerides (TGs) conjugation with non-saturated fatty acids in serum. BZTLF significantly restored the down-regulation of vascular endothelial growth factor receptor 2 (VEGFR2) and endothelial nitric oxide synthase (eNOS) or the upregulation of interleukin 4-induced 1 (IL4I1) and cytochrome P450 family 1 subfamily B member 1 (CYP1B1) at mRNA level, which were key regulatory genes located in metabolic pathways of glutamate and tryptophan.Conclusions: BZTLF improved hindlimb ischemia in diabetic mice by the positive regulation of metabolome changes in serum.

Species covered 人参 Panax ginseng 丹参 Salvia miltiorrhiza 麦冬 Ophiopogon japonicus 玄参 Scrophularia ningpoensis 黄芪 Astragalus membranaceus 薯蓣 Dioscorea opposita 贝母属 Fritillaria