Nuciferin, a chemical extracted from the leaves of Nelumbo nucifera Gaerth. Chromosome mutagenicity of nuciferin was evaluated in bone marrow cells and testicular cells of 30 mice. Chromosome preparation were sampled 24h after injection of nuciferin. 2880 metaphases from bone marrow cells and 2720 metaphases diakinesis from testicular cells were analyzed. The frequency of cells with numerical and structural chromosome aberrations of treated mice showed no significant difference than that found in the control. The result obtained on the study suggested that nuciferin did not exert any chromosome mutagenicity.
Aporphines ; Chromosomes

OBJECTIVETo investigate the chemical constituents of Corydalis yanhusuo.

METHODThe compounds were isolated and purified by column chromatography over macroporous absorption resin, silica gel, and Sephadex LH-20. Their structures were elucidated on the basis of physicochemical properties and spectral data.

RESULT22 compounds were isolated and identified as corydaline (1), tetrahydropalmatine (2), protopine (3), tetrahydrocorysamine (4), tetrahydrocoptisine (5) , tetrahydroberberine (6), tetrahydrocolumbamine (7), noroxyhydrastine (8), dehydrocorydaline (9), glaucine (10), columbamine (11), 8-oxocoptisine (12), 13-methyl-columbamine (13), coptisine (14), palmatine (15), herberine (16), oxoglaucine (17), 13-methyl-palmatrubine (18), dehydrocorybulbine (19), stepharanine (20), adenosine (21), and N5 -acetylornithine (22).

CONCLUSIONCompounds 13, 20, 21, and 22 were isolated from this plant for the first time.

Adenosine ; analysis ; isolation & purification ; Alkaloids ; analysis ; isolation & purification ; Apomorphine ; analogs & derivatives ; analysis ; isolation & purification ; Aporphines ; analysis ; isolation & purification ; Berberine ; analysis ; isolation & purification ; Berberine Alkaloids ; analysis ; isolation & purification ; Chromatography, Liquid ; methods ; Corydalis ; chemistry ; Plant Extracts ; analysis ; isolation & purification ; Spectrometry, Mass, Electrospray Ionization ; methods

OBJECTIVETo optimize the process of extracting effective constituents from lotus leaf.

METHODIndependent variables were ethanol concentration reflux time and solvent fold, dependent variables were extraction rates of nuciferine and flavone in lotus leaf, central composite design and response surface methodology were used for optimization of extraction of lotus leaf.

RESULTThe optimum conditions of extraction process were 75% -80% ethanol, 2-3 hours for reflux, 20-25 fold solvent and 2 times for extraction. Bias between observed and predicted of rates of nuciferine and flavone values were 5.53%, -6.02%, respectively.

CONCLUSIONThe values observed and predicted were close to each other, which proved that the optimization of of extraction of lotus leaf by central composite design and response surface methodology was reasonable and successful.

Aporphines ; chemistry ; isolation & purification ; Flavones ; Flavonoids ; chemistry ; isolation & purification ; Loteae ; chemistry ; Plant Leaves ; chemistry ; Reproducibility of Results

A new aporphine alkaloid (1), together with five known analogues (2-6), has been isolated from the branch of Litsea greenmaniana by using various chromatographic techniques. Their structures were identified by spectroscopic data analysis ( MS, IR, 1D and 2D NMR) as 2,9-dihydroxy-1,10-dimethoxy-4,5-dihydro-7-oxoaporphine (1), laurotetanine (2), N-methyllaurotetanine (3), isodomesticine (4), isocorydine (5), and norisocorydine (6). Compound 1 was a new compound, and compounds 2-6 were obtained from this plant for the first time.
Alkaloids ; chemistry ; Aporphines ; chemistry ; Drugs, Chinese Herbal ; chemistry ; Litsea ; chemistry ; Molecular Structure ; Spectrometry, Mass, Electrospray Ionization

OBJECTIVETo study the content of magnoflorine in main species of Epimedii Herba.

METHODUltrasonic extraction, HPLC analysis.

RESULTThe content of magnoflorine of Epimedium leaves range between 0.0029% and 1.688%.

CONCLUSIONThe content of magnoflorine of Epimedium show large differences between species but relatively stable within the species, E. koreanum Nakai is the highest one and E. brevicornu is the lowest.

Aporphines ; analysis ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; analysis ; Epimedium ; chemistry

OBJECTIVETo establish a HPLC method for determination of protopine and isocorydine in root of Dactylicapnos scandens.

METHODThe separation was performed in a PHENOMENEX-C18 column with a mobile phase of methanol-0.2% phosphoric acid (adjusted to pH 7.0 with triethylamine)(50:50), The detection wavelength was at 254 nm and the flow rate was 0.8 mL x min(-1).

RESULTThe average recovery of Protopine and Isocorydine was 97.9%, 98.6% respectively, and RSD 1.3%, 1.4%.

CONCLUSIONThis method is accurate, simple and reliable. It can be used for quality control of D. scandens.

Aporphines ; analysis ; Benzophenanthridines ; Berberine Alkaloids ; analysis ; Chromatography, High Pressure Liquid ; Papaveraceae ; chemistry ; Plant Roots ; chemistry ; Plants, Medicinal ; chemistry ; Quality Control

OBJECTIVETo study the resource and the quality of wild Corydalis yanhusuo distributed in China.

METHODDistribution was observed and samples of wild C. yanhusuo were collected and qualities were evaluated by determining six main alkaloids contained in the samples.

RESULTThe main distribution of wild Corydalis yanhusuo was in the hills around middle and lower reaches of Yangtze River. Its distributive areas were continuously decreasing. The alkaloids contents in the samples varied among different populations.

CONCLUSIONThe alkaloids contents in wild populations of C. yanhusuo are diverse. The main kinds of alkaloids in some wild populations are higher than cultivated ones, which are valuable for breeding. The wild C. yanhusuo propagate well, however they are endangered due to environment problem, and should be protected.

Aporphines ; analysis ; Berberine Alkaloids ; analysis ; China ; Conservation of Natural Resources ; Corydalis ; chemistry ; Ecosystem ; Pharmacognosy ; Plants, Medicinal ; chemistry ; Quality Control ; Rhizome ; chemistry

A rapid and specific high performance liquid chromatography-mass spectrometric method was developed for determination of magnoflorine in Rhizoma Coptidis and Cortex Phellodendri Chinensis. Samples were extracted by methanol. Agilent Eclipse XDB-C18 ODS column (4.6 mm x 150 mm, 5 microm) was used, and mobile phase was methanol-water (60:40) at a flow rate of 0.8 mL x min(-1). Electrospray ionization model (ESI), and MRM model were used for quantification. The linear range of magnoflorine was 4.352-2720 microg x L(-1). The average recovery was above 98%. The method is simple, sensitive and accurate, it can be used for determination of magnoflorine in Rhizoma Coptidis and Cortex Phellodendri Chinensis.
Aporphines ; analysis ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; chemistry ; Linear Models ; Mass Spectrometry ; methods ; Time Factors

OBJECTIVETo establish an HPLC method for the determination of four alkaloids, i.e., 2-hydroxy-1-methoxyaporphine, pronuciferine, nuciferine and roemerine, in Nelumbo nucifera and its alkaloid fraction.

METHODThe determination was carried out at 35 degrees C on a Hypersil C18 column (4.6 mm x 250 mm, 5 microm), eluting with acetonitrile-water containing 0.1% triethylamine as mobile phases in gradient mode. The flow rate was 1.0 mL x min(-1) and detection at the wavelength was set at 270 nm.

RESULTThe linear ranges of 2-hydroxy-1-methoxyaporphine, pronuciferine, nuciferine and roemerine were 0.110-0.658 microg (r = 0.9995), 0.0210-0.126 microg (r = 0.9995), 0.103-0.618 microg (r = 0.9998), 0.085 6-0.514 microg (r = 0.9995), with the average recoveries (n=6) were 101.5%, 99.14%, 99.21% and 98.41% for the alkaloid fraction of N. nucifera and 99.53%, 100.5%, 97.51% and 100.1% for N. nucifera respectively.

CONCLUSIONThe determination results of the three batches of samples showed that the method was easy and accurate which could be used to determine the contents of four components in N. nucifera and its alkaloid fraction.

Alkaloids ; chemistry ; Aporphines ; chemistry ; Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; chemistry ; Nelumbo ; chemistry ; Spiro Compounds ; chemistry

The aim of this study was to elucidate the mechanism of nuciferine on alleviating obesity based on modulating gut microbiota, ameliorating chronic inflammation, and improving gut permeability. In this study, the obese model mice were induced by high-fat diet and then randomly divided into model group, and nuciferine group; some other mice of the same week age were fed with normal diet as normal group. In the modeling process, the mice were administered intragastrically(ig) for 12 weeks. In the course of both modeling and treatment, the body weight and food intake of mice in each group were measured weekly. After modeling and treatment, the Lee's index, weight percentage of inguinal subcutaneous fat, and the level of blood lipid in each group were measured. The pathological changes of adipocytes were observed by HE staining to evaluate the efficacy of nuciferine treatment in obese model mice. 16 S rRNA sequencing analysis was conducted to study the changes in diversity and abundance of gut microbiota after nuciferine treatment. Enzyme-linked immunosorbent assay(ELISA) and quantitative Real-time polymerase chain reaction(qPCR) were used to detect the levels of inflammatory factors interleukin-6(IL-6), interleukin-1β(IL-1β), tumor necrosis factor-α(TNF-α) and the expression of related genes in adipose tissue of mice in each group, so as to evaluate the effect of nuciferine on chronic inflammation of mice in obese model group. qPCR was used to detect the expression of occludin and tight junction protein 1(ZO-1)gene in colon tissure, so as to evaluate the effect of nuciferine on intestinal permeability of mice in obese group. Nuciferine decreased the body weight of obese mice, Lee's index, weight percentage of inguinal subcutaneous fat(P<0.05), and reduced the volume of adipocytes, decreased the level of total cholesterol(TC), triglyceride(TG), and low density lipoprotein cholesterol(LDL-C)(P<0.05) in serum, improved dysbacteriosis, increased the relative abundance of Alloprevotella, Turicibacter, and Lactobacillus, lowered the relative abundance of Helicobac-ter, decreased the expression of inflammatory cytokines IL-6, IL-1β, and TNF-α genes in adipose tissue(P<0.01), decreased the levels of inflammatory cytokines IL-6, IL-1β, and TNF-α in serum(P<0.05), and increased the expression of occludin and ZO-1 genes related to tight junction in colon tissue(P<0.01). Nuciferine could treat obesity through modulating gut microbiota, decreasing gut permeability and ameliorating inflammation.
Animals ; Aporphines ; Diet, High-Fat/adverse effects* ; Gastrointestinal Microbiome ; Mice ; Mice, Inbred C57BL ; Mice, Obese ; Obesity/genetics*