Dengzhan Shengmai Capsules( DZSMC),a well-known traditional Chinese medicine( TCM) formula,is comprised of the main drug of Erigeron breviscapus,and supplemented with Panax ginseng,Ophiopogon japonicus and Schisandra chinensis,with functions of supplementing Qi and nourishing Yin,promoting blood circulation and strengthening brain. DZSMC is the only Chinese patent drug with A-level evidence-based medicine in secondary prevention for stroke and ranks first among TCMs for neurological treatment. Modern studies indicate that the chemical constituents of DZSMC mainly include flavonoids,phenolic acids,lignans,saponins and so on. Pharmacological experimental studies have shown that DZSMC has such pharmacological effects as anti-oxidation,anti-inflammatory and anti-myocardial ischemia. DZSMC is mainly used in the convalescent care of ischemic cardiovascular and cerebrovascular diseases,and is often used in combination with various conventional therapeutic drugs to exert clinical efficacy through brain protection,neuroprotection,etc.,and improve clinical symptoms in patients. In this review,according to domestic and international related literature combined with research results obtained by our project,the research advances in the chemical constituents,pharmacological effects and clinical application of DZSMC have been systematically reviewed and summarized,providing reference and support for further study and secondary development of the formula.
Drugs, Chinese Herbal/pharmacology* ; Erigeron/chemistry* ; Humans ; Medicine, Chinese Traditional ; Ophiopogon ; Panax ; Phytochemicals/pharmacology* ; Phytotherapy ; Schisandra

OBJECTIVEA high-performance liquid chromatographic (HPLC) method was developed for simultaneous determination of chlorogenic acid, scutellarin, 3,5-dicaffeoylquinic acid, 4,5-dicaffeoylquinic acid in different parts of Erigerontis Herba.

METHODThe four constituents were measured on an Agilent Zorbax SB-C18 column (4.6 mm x 450 mm, 5 microm) with a gradient elution of acetonitrile (A) -0.3% phosphoric acid solution (B) (0-10 min, 12%-15% A, 10-32 min, 15% A, 32-33 min, 15%-20% A, 33-50 min, 20%-22% A) at wavelength of 335 nm and 327 nm, and a flow rate of 1.0 mL x min(-1) and the column temperature was 30 degrees C.

RESULTLinearity of each standard was established in the concentration range of 0.050 1-1.002 microg for chlorogenic acid, 0.165 9-3.318 microg for chlorogenic acid, 0.049 7-0.994 microg for 3,5-dicaffeoylquinic acid, 0.048 7-0.974 p.g for 4,5-dicaffeoylquinic acid respectively, with correlation coefficient r > 0.999 6. Average recoveries (n = 6) of 4 compounds were 98.53% with a RSD of 0.94%, 99.68% with a RSD of 0.49%, 98.78% with a RSD of 1.1%, 99.06% with a RSD of 0.81%, respectively.

CONCLUSIONThe developed method is simple, accurate, and precise, it can be used for the quantitative analysis of Erigeron breviscapus.

Apigenin ; analysis ; chemistry ; Chlorogenic Acid ; analogs & derivatives ; analysis ; chemistry ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; chemistry ; Erigeron ; chemistry ; Glucuronates ; analysis ; chemistry ; Quinic Acid ; analogs & derivatives ; analysis ; chemistry

Scutellarin is the main effective constituent of breviscapine, a flavonoid mixture isolated from the dried whole plant of Erigeron breviscapus (Vant.) Hand-Mazz, and valsartan is used as an antihypertensive drug. These two drugs have already been clinically used together to treat diabetic nephropathy (DN) in China, and the combined medications showed some enhanced protection against DN. The aim of this study is to investigate the potential pharmacokinetic interaction between scutellarin and valsartan in rats. Breviscapine injection (20 mg x kg(-1), i.v.) and valsartan (15 mg x kg-, i.g.), either alone or together were given to 18 male Sprague-Dawley rats. Concentrations of scutellarin and valsartan were quantified by HPLC, and pharmacokinetic parameters were calculated by non-compartmental methods. We found that the pharmacokinetic parameters of scutellarin altered significantly after co-administration of oral valsartan. The plasma clearance (CL(p)) and the bile clearance (CL(b)) of scutellarin were reduced significantly in the presence of valsartan. After oral administration of valsartan with or without intravenous scutellarin, however, the pharmacokinetic parameters of valsartan were comparable. In conclusion, our data suggests that the concurrent use of valsartan reduces the biliary excretion of scutellarin, and this may be due to the inhibitory effect of valsartan on the biliary excretion of scutellarin mediated by Mrp2 (Multidrug resistance-associated protein 2).
Administration, Intravenous ; Administration, Oral ; Animals ; Antihypertensive Agents ; administration & dosage ; blood ; pharmacokinetics ; Apigenin ; administration & dosage ; blood ; isolation & purification ; pharmacokinetics ; Bile ; metabolism ; Chromatography, High Pressure Liquid ; Drug Interactions ; Erigeron ; chemistry ; Glucuronates ; administration & dosage ; blood ; isolation & purification ; pharmacokinetics ; Male ; Metabolic Clearance Rate ; Multidrug Resistance-Associated Proteins ; metabolism ; Plants, Medicinal ; chemistry ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Valsartan ; administration & dosage ; blood ; pharmacokinetics

Two novel isocoumarins, erigeronone C (1) and D (2), were isolated from the ethanol extract of the whole plant of Erigeron breviscapus (Vant.) Hand.-Mazz (Compositae). Their structures were respectively elucidated as 8, 9-dihydroxypyrano [3, 2-c] isochromen-4, 6-dione (1) and 4, 7-dihydroxy-3-(3-hydroxy-4-oxo-4H-pyran-2-yl)-1H-isochromen-1-one (2) on the basis of spectral analyses. Both structures of 1 and 2 possess a gamma-pyrone moiety and that is rare in natural products.
Erigeron ; chemistry ; Isocoumarins ; chemistry ; isolation & purification ; Molecular Structure ; Plants, Medicinal ; chemistry

Dengzhanxixin injection is extracted from herbs of Erigeron breviscapusis. Its function includes activate blood, dispel stasis, unblock the collaterals and relieve pain. In clinical, it is widely used for static blood obstruction, wind-stroke and hemiplegia, numbness of limbs, deviated eyes and mouth, dysphasia, chest impediment, heart pain, ischemic stroke, coronary heart disease, and angina pectoris with the pattern mentioned above. In this paper, we planed to review the pharmacological and toxicological effects of Dengzhanxixin injection from relevant studies.
Animals ; Coronary Disease ; drug therapy ; Drug Therapy ; Drug-Related Side Effects and Adverse Reactions ; Drugs, Chinese Herbal ; adverse effects ; pharmacology ; Erigeron ; chemistry ; Humans ; Stroke ; drug therapy

OBJECTIVETo investigate the effects of caffeic acid ester fraction (Caf) from Erigeron breviscapus, mainly composed of dicaffeoylquinic acids (diCQAs), on microglial activation in vitro and focal cerebral ischemia in vivo.

METHODSThe production of nitric oxide (NO), tumor necrosis factor α (TNF-α), and interleukin-1β (IL-1β) induced by lipopolysaccharide (LPS) treatment in rat primary cultured microglia were measured by Griess reaction or enzyme-linked immunosorbent assay. Cell viability of cortical neurons was measured using AlamarBlue reagent. The behavioral tests and the infarct area of brain were used to evaluate the damage to central nervous system in rat middle cerebral artery occlusion (MCAO) model of cerebral ischemia. Real time polymerase chain reaction was used to determine the expression of inducible nitric oxide synthase (iNOS), TNF-α and IL-1β mRNA in ischemic cerebral tissues.

RESULTSCaf inhibited the production of NO, TNF-α and IL-1β induced by LPS treatment in primary microglia in a dose-dependent manner. Exposure of cortical neurons to conditioned medium from Caf-treated microglia increased neuronal cell viability (P<0.01) compared with conditioned medium from LPS-treated alone. In MCAO rat model of cerebral ischemia, Caf could significantly improve neurobehavioural performance and reduce percentage infarct volume compared with the vehicle group (P<0.05). Caf could also significantly inhibit the up-regulation of iNOS, TNF-α, and IL-1β gene expressions in ischemic cerebral tissues.

CONCLUSIONCaf could suppress microglial activation, which may be one mechanism of its neuroprotective effect against ischemia.

Animals ; Brain ; drug effects ; metabolism ; pathology ; Brain Ischemia ; complications ; drug therapy ; pathology ; prevention & control ; Caffeic Acids ; chemistry ; pharmacology ; Chemical Fractionation ; Chromatography, High Pressure Liquid ; Erigeron ; chemistry ; Gene Expression Regulation ; drug effects ; Infarction, Middle Cerebral Artery ; complications ; pathology ; Interleukin-1beta ; genetics ; metabolism ; Microglia ; drug effects ; metabolism ; pathology ; Neuroprotective Agents ; chemistry ; pharmacology ; therapeutic use ; Nitric Oxide Synthase Type II ; genetics ; metabolism ; Plant Extracts ; pharmacology ; Quinic Acid ; analogs & derivatives ; chemistry ; pharmacology ; therapeutic use ; RNA, Messenger ; genetics ; metabolism ; Rats ; Rats, Wistar ; Tumor Necrosis Factor-alpha ; genetics ; metabolism

OBJECTIVETo study the chemical constituents from herbs of Erigeron breviscapus.

METHODThe compounds were isolated and purified by various chromatographic techniques. Their structures were identified on the basis of physicochemical properties and spectral analysis.

RESULTTwelve compounds were isolated and structurally identified as quercetin-3-O-beta-D-glucoside (1), 5, 7-dihydroxychromone (2), 3-O-caffeoyl-gamma-quinide (3), naringenin (4), 3, 5-di-O-caffeoylquinic acid (5), 3,4-di-O-caffeoylquinic acid (6), 4, 5-di-O-caffeoylquinic acid (7), 1,3-di-O-caffeoylquinic acid (8), 1, 5-di-O-caffeoylquinic acid (9), 3-O-caffeoylquinic acid (10), 4-O-caffeoylquinic acid (11) and chlorogenic acid (12).

CONCLUSIONCompounds 1-4 were isolated from this plant for the first time.

Chlorogenic Acid ; analysis ; isolation & purification ; Chromatography ; Chromones ; analysis ; isolation & purification ; Erigeron ; chemistry ; Flavanones ; analysis ; isolation & purification ; Magnetic Resonance Spectroscopy ; Mass Spectrometry ; Plants, Medicinal ; chemistry ; Quercetin ; analogs & derivatives ; analysis ; isolation & purification ; Quinic Acid ; analogs & derivatives ; analysis ; isolation & purification

Scutellarin is a flavonoid extracted from a traditional Chinese herb, Erigeron breviscapus. The present study investigated the effect of scutellarin on MUC5AC mucin production and the possible mechanism. Human bronchial epithelial 16 (HBE16) cells were pretreated with scutellarin for 60 min, and then exposed to human neutrophil elastase (HNE) or interleukin (IL)-13 for 12 hr. RT-PCR and ELISA were performed to measure the amount of MUC5AC mucin production. The results showed that scutellarin inhibited MUC5AC expression both in mRNA and protein level induced by HNE in a concentration-dependent manner. However, scutellarin failed to inhibit MUC5AC mucin production induced by IL-13. To investigate the intracellular mechanisms associated with the effect of scutellarin on MUC5AC mucin production, western blotting was carried out to examine the phosphorylation of protein kinase C (PKC), signal transducer and activator of transcription 6 (STAT6) and extracellular signal-regulated kinase 1/2 (ERK1/2). The phosphorylation of PKC and ERK1/2 was attenuated after treatment with scutellarin, whereas STAT6 was not significantly affected. Therefore, it is suggested that scutellarin down-regulates MUC5AC mucin production on HBE16 cells via ERK-dependent and PKC-dependent pathways.
Apigenin/chemistry/*pharmacology ; Cells, Cultured ; Dose-Response Relationship, Drug ; Down-Regulation ; Epithelial Cells/*drug effects/metabolism ; Erigeron/chemistry ; Glucuronic Acids/chemistry/*pharmacology ; Humans ; Interleukin-13/*pharmacology ; Leukocyte Elastase/*pharmacology ; Mitogen-Activated Protein Kinase 1/metabolism ; Mitogen-Activated Protein Kinase 3/metabolism ; Mucin 5AC/genetics/*metabolism ; Phosphorylation ; Protein Kinase C/metabolism ; Respiratory Mucosa/drug effects/*metabolism ; STAT6 Transcription Factor/metabolism ; Signal Transduction

OBJECTIVETo investigate the neuroprotective effects of the constituents in Herba Erigerontis on neuroblastoma SH-SY5Y cells, and find out its possible material foundation in treating Alzheimer's disease (AD).

METHODDifferent combinations of the three constituents in Herba Erigerontis were prepared according to the orthogonality experiment, and the indexes (MTT reduction assay, lipid peroxidation and expressions of nAChR alpha7 protein)were observed upon the SH-SY5Y cells followed by treatment of these combinations and beta-amyloid peptide (AP). The pharmacology data thus obtained and peak data in UPLC fingerprint were analyzed through ANOVA and correlationship by SPSS to give the information of active possible material foundation.

RESULTConstituents B and C showed clear activity and peaks of 4, 7-12 did positive correlationship according to the correlation of fingerprints and pharmacology.

CONCLUSIONThis study makes a valid approach for deducing the active constituents even the exact compounds against neurotoxicity induced by Abeta by correlation of fingerprints and pharmacology.

Alzheimer Disease ; drug therapy ; Amyloid beta-Peptides ; toxicity ; Analysis of Variance ; Animals ; Cell Line, Tumor ; Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; therapeutic use ; Erigeron ; chemistry ; Humans ; Nervous System ; drug effects ; Neurotoxins ; toxicity

OBJECTIVETo study the effect of water stress on the content of scutellarin and caffeate in Erigeron breviscaps.

METHODFv/Fm, N content, as well as the content of scutellarin and caffeate under three water grads were measured.

RESULT AND CONCLUSIONFv/Fm of the plant decreased significantly in 8% and 23% water treatment, that proved drought and waterlogging occurred. Under the two conditions, the contents of N were lower but the contents of active constituents were higher than those under 15% treatment. The results support the carbon-nutrient balance hypothesis and the "stress effect hypothesis" for the formation of geo-herbs.

Apigenin ; metabolism ; therapeutic use ; Caffeine ; pharmacology ; Dehydration ; drug therapy ; therapy ; Droughts ; Erigeron ; chemistry ; growth & development ; metabolism ; Gene Expression Regulation, Plant ; Glucuronates ; metabolism ; therapeutic use ; Plant Preparations ; therapeutic use ; Plant Transpiration ; drug effects ; Plants, Medicinal ; chemistry ; Temperature ; Water ; physiology