| Abstract:AIM Analyze the pharmacodynamic material basis and mechanism of Galuo manmai Pill against high altitude polycythemia (HAPC). Methods A rat model of HAPC was established by combined induction of a hypobaric oxygen environmental control system and intraperitoneal injection of cobalt chloride. Meanwhile, the corresponding therapeutic drugs were administered to each treatment group. Peripheral blood routine and blood gas indexes were detected, and the serum contents of Heme, Erythropoietin(EPO), Hypoxia-Inducible Factor 1α(HIF-1α), Tissue Factor (TF), Tissue Factor Pathway Inhibitor (TFPI) and Thrombin Antithrombin Complex(TAT)were determined by ELISA. HE staining was used to observe lung tissue injury, and the mRNA and protein expressions of HIF-1α/EPO signaling pathway in renal tissue were detected to comprehensively evaluate the pharmacodynamic effect of Galuo manmai Pill on HAPC. A total of 15 batches of Galuo manmai Pill were collected for qualitative and quantitative analysis of its chemical components. A cobalt chloride-induced zebrafish hypoxia model was established to detect the inhibition rate of tail erythrocytes by samples of different batches. The spectrum-effect data were analyzed by combining grey relational analysis with Spearman's rank correlation analysis to screen out the pharmacodynamic material basis of Galuo manmai Pill against HAPC. Results Compared with rats in the control group, the hemoglobin content, red blood cell count and hematocrit in the model group were significantly increased; the partial pressure of oxygen, potassium ion and anion gap were significantly elevated, while the partial pressure of carbon dioxide, total carbon dioxide and bicarbonate content were markedly decreased; the serum levels of Heme, EPO, HIF-1α, TF, TFPI and TAT were significantly raised; obvious pathological damage was observed in lung tissues; the mRNA and protein expressions of HIF-1α and EPO in renal tissues were significantly up-regulated. In contrast to the model group, all the above indicators were significantly improved in the Galuo manmai Pill treatment groups. Spectrum-effect correlation analysis revealed that gallic acid, trans-melilotoside, ferulic acid, neochlorogenic acid and liquiritigenin in Galuo manmai Pill had a grey correlation degree ≥0.9, with a Spearman’s rank correlation coefficient >0.5 and statistically significant differences (P<0.05). Conclusion Galuo manmai Pill could significantly reduce the hemoglobin content and the levels of blood-related factors in HAPC rats, improve blood fluidity and alleviate lung tissue injury. It is speculated that the HIF-1α/EPO axis serves as the core pathway for its pharmacodynamic effects, and gallic acid, trans-melilotoside, ferulic acid, neochlorogenic acid and liquiritigenin are the key material basis for its prevention and treatment of HAPC. |