1.Study on the Quality Standard of Anshen Jiannao Mixture
Haifeng GU ; Ran LIU ; Xiaoqian ZHANG
Chinese Journal of Information on Traditional Chinese Medicine 2006;0(02):-
Objective To study the quality standard of Anshen Jiannao Mixture. Methods Radix ophiopgonis, Radix et Rhizoma Salviae Miltiorrhizae, Fructus Lycii and Radix et Rhizoma Ginseng were identified by TLC. HPLC was used to determine the content of Schizandrol A on C18 (250 mm?4.6 mm, 5 ?m) ODS column. The mobile phase was consisted of methanol-water (55∶45). The flow rate was 1.0 mL/min. The detection wavelength was at 250 nm. Results The characteristic spot of Radix et Rhizoma Salviae Miltiorrhizae, Fructus Lycii and Radix et Rhizoma Ginseng could be easily examined by TLC. The calibration curve of Schizandrol A was linear in the range of 0.121 8~1.218 ?g, r=0.999 9. The precision RSD was 0.22% (n=6). The reproducibility RSD was 1.1% (n=6). The average recovery rate of Schizandrol A was 97.34% (RSD=1.7%, n =6). Conclusions The method is easy, sensitive and specific with good reproducibility. It can be used to control the quality of Anshen Jiannao Mixture.
2. Erythropoietin's biological function and source
Huan YANG ; Yuhong SHI ; Haifeng RAN ; Yijin CHEN ; Xiaoyu XU ; Xiaoyu XU
Chinese Journal of Clinical Pharmacology and Therapeutics 2021;26(4):434-443
Erythropoietin is an endogenous 34 000 glycoprotein hormone composed of 165 amino acids. EPO is mainly derived from the liver of the fetus and synthesized in the kidney after birth, but is secreted by the liver, kidney, brain, reproductive system, bone marrow macrophage and mammary gland. The production of EPO is regulated by hypoxia-inducible factors. EPO can significantly stimulate the proliferation and survival of red blood cells and promote hematopoiesis; it has been used clinically to treat chronic renal anemia, anemia caused by bone marrow tumors and myelodysplasia. EPO has a wide range of physiological functions and it is found in all systems of animal life. Apart from promoting hematopoiesis, EPO also promotes angiogenesis, and shows brain protection, kidney protection, heart protection, regulation of metabolism, regulation of inhalation, protection of the digestive system and reproductive system. Animals without EPO can hardly survive. It illustrates that EPO plays an important role in life.