In order to improve the quality standard of Marsdenia tenacissima, a quantitative determination method of tenacissoside H was developed using high performance liquid chromatography. The method was carried out on a YMC ODS-H80 (4.6 mm x 250 mm, 4 microm) column eluted with a mixture of acetonitrile and water (50:50) as the mobile phase. The flow rate was 0.8 mL x min(-1) and the column temperature was 35 degrees C. An evaporative light scattering detector (ELSD) was used with the temperature of drift tube set at 60 degrees C and the gas flow rate of nitrogen set at 1.5 mL x min(-1). The calibration curve was linear in the range from 0.5625 to 36.00 microg (r = 0.9998). The average recovery and RSD were 99.41% and 1.8%, respectively. The contents of tenacissoside H in the 11 samples from different habitats varied from 0.201% to 0.862%. The method established in this paper is specific and reliable to control and evaluate the quality of M. tenacissima.
Chromatography, High Pressure Liquid ; Glycosides ; analysis ; Marsdenia ; chemistry ; Reproducibility of Results

To ascertain current situation of wild Marsdenia tenacissima resources in Honghe, Yunnan province, the distribution, habitat characteristic and resources reserves of M. tenacissima were surveyed based on interviews and investigation. The results showed that M. tenacissima was found in 7 counties such as Jinping, Mengzi etc, and distributed mainly on the mountainsides from 800 m to 1 200 m. And distribution was affected by many factors, such as light, heat, topography, soil, and vegetation. M. tenacissima grew well in distribution areas. M. tenacissima had averagely a weight of 2.8 kg per plant. Resources reserve of M. tenacissima in Honghe was estimated to 1 300 tons by now but it reduced rapidly in resent years, the wild resources reserve may not meet demand of market. Resources protection and wildlife tending would be conducted to deal with increasing medication requirements.
China ; Ecosystem ; Marsdenia ; classification ; growth & development ; Plants, Medicinal ; classification ; growth & development ; Soil ; chemistry

OBJECTIVETo establish a HPLC-ELSD fingerprint of Marsdenia tenacissima from different habitats, in order to provide a reliable method for scientific assessment and effective quality control.

METHODHPLC-ELSD was adopted to determine 25 baches of M. tenacissima herbs from different habitats. Traditional Chinese medicine chromatographic fingerprint similarity software assessment system 2004 developed by China Pharmacopoeia Committee was adopted to establish a common mode chart and assess chromatographic similarity based on the degree of correlation.

RESULTThe common mode for M. tenacissima herb C21 steroidal fingerprint was established, including 11 common characteristic peaks. Among them, 10 were identified. According to the assessment on the similarity of 25 batches of samples, 80% of them showed a similarity of over 0.80 in steroidal HPLC-ELSD fingerprint.

CONCLUSIONThe method can be used to assess the quality of M. tenacissima.

Chromatography, High Pressure Liquid ; Drugs, Chinese Herbal ; chemistry ; Ecosystem ; Light ; Marsdenia ; chemistry ; classification ; Scattering, Radiation

OBJECTIVETo identify the original plant of "Daibaijie", commonly used Dai herb.

METHODThe literature review, morphology and anatomy, pharmacognosy, molecular biology, chemistry were used to analysis.

RESULTDaibaijie's historical scientific name, Dregea sinensis Hemsl., was mistakenly given "Daibaijie" and D. sinensis have significant differences from the distribution, morphology and anatomy, pharmacognosy, molecular biology and chemical composition. "Daibaijie" matches with the characteristics of Marsdenia tenacissima (Roxb.) Moon in Flora of China in English.

CONCLUSIONDaibaijie's original plant is M. tenacissima (Roxb.) Moon. The description and illustration of M. tenacissima (Roxb.) Moon in Flora of China in China are wrong. The illustration of M. tenacissima in Flora of China in English is wrong too.

China ; ethnology ; Herbal Medicine ; Marsdenia ; anatomy & histology ; classification ; Medicine, Chinese Traditional ; Plant Components, Aerial ; anatomy & histology ; classification

OBJECTIVETo establish a quantitative method to deter mine C21 steroidal glycosides in Marsdenia tenacissima.

METHODMethanol was used as the extraction solvent and the samples were purified by macroporous resin ADS-7. A mixture of sulfuric acid-methanol (4:1)was used as color-producing reagent. The absorbance was measured at 325 nm.

RESULTThere is a good linearity (r = 0.999 9, n = 6) within the range of 10.6-148.4 microg. The average recoveries of tenacissoside-H at different concentrations were 95.8% to 97.1% with RSD less than 2.4% (n = 5).

CONCLUSIONThis method is reliable as a quantitative analytical method for the quality assessment of M. tenacissima.

Colorimetry ; methods ; Glycosides ; analysis ; Marsdenia ; chemistry ; Plant Stems ; chemistry ; Plants, Medicinal ; chemistry ; Powders ; Quality Control ; Reproducibility of Results ; Steroids ; analysis

AIMTo study the chemical constituents of Marsdenia tenacissima (Roxb.) Wight et Arn.

METHODSTo separate compounds with various chromatography technology and to elucidate their structures by chemical and spectral analysis.

RESULTSTwo compounds were isolated from Marsdenia tenacissima and their stuctures were determined as tenacissosides J (I) and tenacissosides K (II).

CONCLUSIONCompounds I and II are new C21 steroidal glycosides.

Glycosides ; chemistry ; isolation & purification ; Marsdenia ; chemistry ; Molecular Conformation ; Molecular Structure ; Plant Stems ; chemistry ; Plants, Medicinal ; chemistry ; Steroids ; chemistry ; isolation & purification

To study the C21 steroids of the stems of Marsdenia tenacissima (Roxb.) Wight et Arn, various chromatography methods were used for the isolation of the constituents and their structures were identified by spectral analysis. Eight C21 steroids were isolated from the CHCl3 extract, which were identified as 11alpha-O-tigloyl-17beta-tenacigenin B (1), 17beta-tenacigenin B (2), tenacigenoside A (3), 11alpha-O-2-methylbutyryl-12beta-O-acetyl tenacigenin B (4), tenacissoside H (5), marsdenoside A (6), tenacissoside G (7), and tenacissoside I (8). Among them, compound 1 is a new compound.
Marsdenia ; chemistry ; Molecular Structure ; Plant Stems ; chemistry ; Plants, Medicinal ; chemistry ; Saponins ; chemistry ; isolation & purification ; Steroids ; chemistry ; isolation & purification

OBJECTIVETo study characteristic fingerprints of the fat-soluble components of different Marsdenia tenacissima samples by GC and GC-MS.

METHODThe sample was split in the 280 degrees C injection port, with 10:1 split ratio, and separated on a fused silica capillary column (DB-5, 30 m x 0.25 mm I. D., 0.25 microm film). The temperature program was 70 degrees C for 5 min, 8 degrees C x min(-1) to 200 degrees C, then 5 degrees C x min-1 to 260 degrees C, 260 degrees C for 10 min. The high pure nitrogen was used as a carrier gas, The FID temperature was 300 degrees C.

RESULTThere are 15 common peaks in the GC fingerprints of M. tenacissima and they are identified by GC-MS. The analyses on cluster and similarity degree of the finger the crude drugs from various habitats have been performed.

CONCLUSIONThe method has good repeatability. The GC fingerprint combined with the HPLC fingerprint of M. tenacissim can be used to evaluate its quality integrally.

China ; Chromatography, Gas ; methods ; Drugs, Chinese Herbal ; analysis ; chemistry ; standards ; Ecosystem ; Gas Chromatography-Mass Spectrometry ; Marsdenia ; chemistry ; growth & development ; Plants, Medicinal ; chemistry ; growth & development ; Quality Control ; Reproducibility of Results

OBJECTIVETo study the antitumor activities of the liposoluble components from caulis Marsdenia tenocissimae and analyze its chemical constituents.

METHODThe supercritical fluid extraction was used to extract the liposoluble components from caulis M. tenocissimae. MIT test was applied to study the anticancer effects of liposoluble components on growth inhibition in human liver cancer line HepG-2 cells, and the chemical constituents were analyzed by gas chromatography/mass spectrometry (GC-MS).

RESULTThe liposoluble components of caulis M. tenocissimae have obvious growth inhibitory action to HepG-2 cells. Twenty-four compounds were identified and their relative contents were determined.

CONCLUSIONThe liposoluble components from caulis M. tenocissimae have antitumor activities, and its pharmacological activity is related to its chemical constituents.

Antineoplastic Agents ; analysis ; chemistry ; pharmacology ; Cell Proliferation ; drug effects ; Gas Chromatography-Mass Spectrometry ; Hep G2 Cells ; Humans ; Lipids ; chemistry ; Marsdenia ; chemistry ; Solubility

The article reviewed the progress in the research of antitumor activities and mechanisms of Marsdenia tenacissima. Its origin producing area and antitumor constituents were analyzed. The herb possessed extensive antitumor effects in experimental and clinical applications. It provides theoretical evidences for study on constituents in this traditional Chinese medicine. Futher studies on the species in M. tenacissima are needed for better medicinal utilization.
Animals ; Antineoplastic Agents ; administration & dosage ; pharmacology ; therapeutic use ; Drugs, Chinese Herbal ; administration & dosage ; pharmacology ; therapeutic use ; Humans ; Marsdenia ; chemistry ; Neoplasms ; drug therapy ; pathology