proteinase inhibitors from a mimosoideae legume, albizzia julibrissin. homologues of soybean trypsin inhibitor (kunitz).four proteinase inhibitors, a-ii, a-iii, b-i, and b-ii, were isolated from seeds of albizzia julibrissin (silk tree) of the subfamily mimosoideae, which is often regarded as the most primitive group of the leguminosae plants. they were all of the high-molecular weight type (21,600 for a-ii and a-iii, and 19,000 for b-i and b-ii), and composed of two polypeptide chains, linked together by a disulfide bond. a-ii (a-iii) inhibited bovine trypsin and alpha-chymotrypsin probably at an identical site. ...1979528539
antioxidant activity from the stem bark of albizzia julibrissin.the antioxidant activity of the stem bark from albizzia julibrissin was evaluated for its potential to scavenge 1,1-diphenyl-2-picrylhydrazyl (dpph) radicals, to inhibit the generation of the hydroxyl radical (*oh), total reactive oxygen species (ros) and to scavenge authentic peroxynitrites (onoo-). the methanol extract of a. julibrissin exhibited strong antioxidant activity in the tested model systems. therefore, it was further fractionated using several solvents. the antioxidant activity of t ...200312877554
anxiolytic-like effects of extracts from albizzia julibrissin bark in the elevated plus-maze in rats.the purpose of the this study was to characterize the putative anxiolytic-like effects of the aqueous extract of albizzia julibrissin stem bark using the elevated plus maze (epm) in rats. the water extract of albizzia julibrissin was orally administered at 10, 50, 100 or 200 mg/kg to adult male sd rats, 1 h before behavioral evaluation in an epm, respectively. control rats were treated with an equal volume of saline, and positive control rats buspirone (1 mg/kg). single or repeated treatment (fo ...200415464830
effect of chronic albizzia julibrissin treatment on 5-hydroxytryptamine1a receptors in rat brain.quantitative receptor autoradiography and behavioral studies were employed to investigate whether the aqueous extract of albizzia julibrissin (aeaj) specifically targets serotonergic systems in rat brain. aeaj was orally administered at 50 and 200 mg/kg to adult male sd rats for 7 days. treatment with aeaj (200 mg/kg) significantly increased time-spent in open arms and the number of open arm entries in an elevated plus-maze (epm) versus saline controls (p<0.05). moreover, those effects of aeaj w ...200515894080
potential tree species for use in the restoration of unsanitary landfills.given that they represent the most economical option for disposing of refuse, waste landfills are widespread in urban areas. however, landfills generate air and water pollution and require restoration for landscape development. a number of unsanitary waste landfills have caused severe environmental problems in developing countries. this study aimed to investigate the colonization status of different tree species on waste landfills to assess their potential for restoring unsanitary landfills in s ...200516132448
induction of apoptosis in human acute leukemia jurkat t cells by albizzia julibrissin extract is mediated via mitochondria-dependent caspase-3 understand antitumor activity of albizzia julibrissin durazz (leguminosae), which has been used as a traditional oriental medicine, the mechanism underlying cytotoxic effect of its extract on human acute leukemia jurkat t cells were investigated. the methanol extract of the stripped barks (3kg) of albizzia julibrissin was evaporated, dissolved in water, and then sequentially extracted by chloroform, ethyl acetate, and n-butanol. the substance in the butanol extract containing the most cytotox ...200616533581
phytochrome effects in the nyctinastic leaf movements of albizzia julibrissin and some other legumes.participation of phytochrome is evident in the nyctinastic response of leaves of albizzia julibrissin (silk-tree), albizzia lophantha, leucaena glauca, poinciana gilliesi and calliandra inequilatera; closure of excised pairs of pinnules upon darkening is rapid following red illumination and slow following far-red. under good conditions the difference is obvious within 10 minutes. these observations confirm a report by fondeville, borthwick, and hendricks on the sensitive plant, mimosa pudica, bu ...196716656671
a radioassay for synaptic core complex assembly: screening of herbal extracts for effectors.synaptic core complex formation between syntaxin and synaptosome-associated protein of 25 kda (snap25) on the plasma membrane and synaptobrevin on the vesicle membrane is responsible for membrane fusion and neurotransmitter release. a radiolabeled protein binding assay for synaptic core complex formation was developed. the components of this assay included recombinant glutathione s-transferase (gst)-syntaxin immobilized on glutathione agarose beads, snap25 and (125)i-labeled synaptobrevin. react ...200616824472
extraction of hyperoside and quercitrin from mimosa (albizia julibrissin) foliage.mimosa, an excellent energy crop candidate because of its high growth yield, also contains, on a dry basis, 0.83% hyperoside and 0.90% quercitrin. hyperoside has been documented as having anti-inflammatory and diurectic properties, whereas quercitrin may play a role in intestinal repair following chronic mucosal injury. thus, mimosa might first be extracted for important antioxidant compounds and then used as a feedstock for energy production. this article presents results from studies aimed at ...200616915655
antidepressant-like effects of albizzia julibrissin in mice: involvement of the 5-ht1a receptor system.the present study was undertaken to investigate the antidepressant-like effects of the methylene chloride fraction of albizzia julibrissin (mcaj) using a tail suspension test in mice. mcaj was orally administered at 50, 100, or 200 mg/kg to mice, 1 h before the tail suspension test. acute treatment with mcaj at 200 mg/kg significantly reduced the immobility time compared with the control group, and thus showed an antidepressant-like effect. this effect was comparable to that of imipramine at 10 ...200717477962
effect of albizia julibrissin water extracts on low-density lipoprotein oxidization.high-value phytochemicals could be extracted from biomass prior to the current cellulosic pretreatment technologies (i.e., lime, ammonia, dilute acid, or pressurized hot water treatments) provided that the extraction is performed with a solvent that is compatible with the pretreatment. this work reports on the extraction of flavonoids from albizia julibrissin biomass. while extracting a. julibrissin foliage with 50 degrees c water, 2.227 mg/g of hyperoside and 8.134 mg/g quercitrin were obtained ...200717497875
mesorhizobium albiziae sp. nov., a novel bacterium that nodulates albizia kalkora in a subtropical region of china.a novel mesorhizobium group associated with albizia kalkora [wang et al. (2006), syst appl microbiol 29, 502-517] was further characterized. the seven strains in this group showed similar protein patterns and were different from defined mesorhizobium species in sds-page of whole-cell proteins. the representative strain ccbau 61158(t) formed a novel mesorhizobium lineage in phylogenetic analyses of 16s rrna, atpd, glnii and nifh genes. however, its nodc gene sequence was more similar to that of r ...200717551028
[studies on bioassay-guided anti-inflammatory fraction in bark of albizia julibrissin combined determination with lc-ms-ms].to search the anti-inflammatory fraction of albizia julibrissin.200718161296
control of the root-knot nematode, meloidogyne incognita, on mimosa (albizzia julibrissin) by chemical dips. 197219319246
anti-angiogenic activity of julibroside j8, a natural product isolated from albizia julibrissin.the purpose of this study was to investigate the anti-angiogenic properties of julibroside j(8), a triterpenoid saponin isolated from albizia julibrissin.200919423313
screening of the anticonvulsant activity of some plants from fabaceae family in experimental seizure models in mice.fabaceae is the third largest family of flowering plants. lack of essential oils in the plants of this family can be an advantage in search for safe and effective medicines. in this study the anticonvulsant effect of the leaves of albizzia julibrissin, acacia juliflora, acacia nubica and aerial parts of astragalus obtusifolius was evaluated in pentylenetetrazole (ptz) and maximal electroshock (mes) seizure tests.201122615673
ensifer glycinis sp. nov., a rhizobial species associated with species of the genus glycine.rhizobial strains from root nodules of astragalus mongholicus and soybean (glycine max) were characterized phylogenetically as members of the genus ensifer (formerly named sinorhizobium), based on 16s rrna gene sequence comparisons. results based upon concatenated sequence analysis of three housekeeping genes (reca, atpd and glnii, ≤ 93.8 % similarities to known species) and average nucleotide identity (ani) values of whole genome sequence comparisons (ranging from 89.6 % to 83.4 % to ensifer fr ...201627125987
the complete amino acid sequence of a kunitz family trypsin inhibitor from seeds of acacia confusa.the complete amino acid sequence of a kunitz-type two-chain trypsin inhibitor was determined for the first time. the sequence of the inhibitor from acacia confusa (acti) was determined by analysis of peptides obtained from the reduced and s-carboxymethylated protein by digestion with endopeptidase lys-c, endopeptidase arg-c, and v8 endopeptidase. acti is comprised of two chains, namely a and b chains linked by the disulfide bridge between cys(133) and cys(141), and the inhibitor consists of 175 ...19938468333
plant-based medicines for anxiety disorders, part 1: a review of preclinical studies.research in the area of herbal psychopharmacology has revealed a variety of promising medicines that may provide benefit in the treatment of general anxiety and specific anxiety disorders. however, a comprehensive review of plant-based anxiolytics has been absent to date. this article (part 1) reviews herbal medicines for which only preclinical investigations for anxiolytic activity have been performed. in part 2, we review herbal medicines for which there have been clinical investigations for a ...201323436255
d-pinitol in fabaceae: an oviposition stimulant for the common grass yellow butterfly, eurema mandarina.the common grass yellow butterfly, eurema mandarina (formerly eurema hecabe mandarina) (lepidoptera, pieridae), recently has been separated taxonomically from a subtropical population of eurema hecabe in japan. this species is widely distributed in the temperate region of japan, and feeds mainly on various ligneous plants within the fabaceae. we attempted to identify an oviposition stimulant for e. mandarina from its primary hosts, albizia julibrissin and lespedeza cuneata. in both hosts, crude ...201627714574
[relationship among allergic rhinitis, regional pollens and meteorological conditions in kunming area].to evaluate the species, quantity and diffusion of allergenic pollens as well as the relationship among allergic rhinitis (ar), pollen species and meteorological conditions in kunming area.201526695978
3'4'7-trihydroxyflavone inhibits rankl-induced osteoclast formation via nfatc1.3'4'7-trihydroxyflavone is a flavonoid from ladino clover, alfalfa, and albizzia julibrissin. in the present study, we found that 3'4'7-trihydroxyflavone markedly inhibited the receptor activator of nuclear factor kappa b ligand (rankl) induced osteoclastic differentiation from mouse bone marrow derived macrophages (bmms). 3'4'7-trihydroxyflavone also reduced the mrna expression level of osteoclastic marker genes including calcitonin receptor (ctr), cathepsin k1 v-atpase v0 subunit d2 (atp6v0d2) ...201526601423
[study on ultrasonic-surfactant extraction of total flavonoids from albizia julibrissin flower by response surface methodology].to optimize the extraction technology of total flavonoids from albizia julibrissin flower by combining surfactant with ultrasonic technology.201526495664
involvement of the nrf2/ho-1 signaling pathway in sulfuretin-induced protection against amyloid beta25-35 neurotoxicity.sulfuretin, one of the major flavonoid glycosides found in the stem bark of albizzia julibrissin and heartwood of rhus verniciflua, is a known anti-oxidant. we previously demonstrated that sulfuretin inhibits neuronal death via reactive oxygen species (ros)-dependent mechanisms in human sh-sy5y cells, although other relevant mechanisms of action of this compound remain largely uncharacterized. as part of our ongoing exploration of the pharmacological actions of sulfuretin, we studied the neuropr ...201526192096
co-occurrence of tannin and tannin-less vacuoles in sensitive plants.vacuoles of different types frequently coexist in the same plant cell, but the duality of the tannin/tannin-less vacuoles observed in mimosa pudica l. is rare. in this plant, which is characterized by highly motile leaves, the development and original features of the double vacuolar compartment were detailed in primary pulvini from the young to the mature leaf stage. in young pulvini, the differentiation of tannin vacuoles first occurred in the epidermis and progressively spread toward the inner ...201626103934
antihaemolytic activity of thirty herbal extracts in mouse red blood cells.reactive oxygen species (ros) can lead to haemolysis and eventually to diseases such as thalassemia and sickle cell anaemia. their action can be counteracted by the antihaemolytic activity of therapeutic agents. the aim of our study was to identify plants that most efficiently counteract ros-caused haemolysis. from ten plants known for their antioxidant activity (orobanche orientalis g. beck, cucumis melo l., albizzia julibrissin durazz, galium verum l., scutellaria tournefortii benth, crocus ca ...201425720027
total saponins from albizia julibrissin inhibit vascular endothelial growth factor-mediated angiogenesis in vitro and in vivo.dried stem bark from albizia julibrissin (aj) is a highly valued traditional chinese medicine, which has been shown to suppress tumor growth and angiogenesis. total saponins from aj (tsaj) are one of the most bioactive components of aj extract. the present study evaluated the anti‑tumor and anti‑angiogenic effects of tsaj in vitro and in vivo. the anti‑angiogenic activity of tsaj was investigated by measuring the effects on vascular endothelial growth factor (vegf)‑induced proliferation, migrati ...201525607254
[chemical constituents from ethyl acetate extract of flower of albizia julibrissin].the ethyl acetate extract of the flower of albizia julibrissin was isolated and purified by silica gel, sephadex lh-20 and mci gel chp-20p column chromatography to yield 29 compounds. their structures were elucidated as 8-hydroxy-2, 6-dimethyl-2e, 6z-octadienoic acid (1), 8-o-formyl-2, 6-dimethyl-2e, 6z-octadienoic acid (la), 8-hydroxy-2, 6-dimethyl-2e, 6e-octadienoic acid (2), 8-o-formyl-2, 6-dimethyl-2e, 6e-octadienoic acid (2a), (2e, 6s)-2, 6-dimethyl-6-o-beta-d-xylpyranosyloxy-2, 7-menthia-f ...201425282893
[identification of albiziae cortex, albiziae flos and their adulterants using its2 barcoding].the its2 barcode was used to accurately identify albiziae cortex, albiziae flos and their adulterants in this study. a total of46 samples from albiziae cortex, albiziae flos and their adulterants were collected. the its2 regions were amplified and sequenced. sequences were assembled using the codoncode aligner. the genetic distances of its2 region were calculated using mega 5.0. blast1, nearest distance and phylogenetic tree (nj-tree) methods were used to assess the identification efficiency of ...201425244737
adjuvant-active fraction from albizia julibrissin saponins improves immune responses by inducing cytokine and chemokine at the site of injection.the total saponin from the stem bark of albizia julibrissin (ajst) has previously showed the adjuvant potentials in mice. in this study, ajst was subjected to resin column chromatography to afford four fractions (ajs30, ajs50, ajs75 and ajs95), and these fractions were further compared for the hemolytic activities and adjuvant potentials on the immune response to ovalbumin (ova) and recombinant fowl pox virus vector-based avian influenza vaccine (rfpv). ajst, ajs50, ajs75 and ajs95 showed a slig ...201425075718
dynamic of plant composition and regeneration following windthrow in a temperate beech forest.the effects of soil pedoturbation (i.e., pit and mound microtopography, pm) on development of herbaceous plant species and woody species regeneration were examined in a temperate beech forest (fagus orientalis lipsky) in northern iran. we recorded the vegetation in 20 pairs of disturbed and adjacent undisturbed plots and established a chronosequence of pm ages to study the effect of time since microsite formation on cover percent of herbaceous plants and woody regeneration status. according to o ...201427379260
anxiolytic effects of julibroside c1 isolated from albizzia julibrissin in mice.julibroside c1 is a saponin-containing compound isolated from albizzia julibrissin durazz. in this study, we investigated the putative anxiolytic effects of julibroside c1 using the elevated plus maze (epm) in mice. julibroside c1 at doses of 0.5 and 1 mg/kg significantly increased the time spent in the open arms and the number of entries into the open arms of the epm compared to the control group. moreover, the anxiolytic-like effects of julibroside c1 (0.5 mg/kg) were blocked by way-100635 (5- ...201323481219
selected extracts of chinese herbal medicines: their effect on nf-κb, pparα and pparγ and the respective bioactive compounds.chinese herbal medicinal (chm) extracts from fourteen plants were investigated in cell-based in vitro assays for their effect on nuclear factor κb (nf-κb), a key regulator of inflammation, as well as on peroxisome proliferator-activated receptors (ppars) being key regulators of genes involved in lipid and glucose metabolism. 43% of the investigated chms showed nf-κb inhibitory and 50% pparα and pparγ activating effects. apolar extracts from cortex and flos of albizia julibrissin durazz. and proc ...201222675394
a multiyear estimate of the effective pollen donor pool for albizia julibrissin.studies of pollen movement in plant populations are often limited to a single reproductive event, despite concerns about the adequacy of single-year measures for perennial organisms. in this study, we estimate the effective number of pollen donors per tree from a multiyear study of albizia julibrissin durazz (mimosa, fabaceae), an outcrossing, insect-pollinated tree. we determined 40 seedling genotypes for each of 15 seed trees during 4 successive years. a molecular analysis of variance of the p ...200312634826
purification and some properties of a proteinase inhibitor (de-1) from peltophorum africanum (weeping wattle) seed.a proteinase inhibitor (de-1) from the seed of peltophorum africanum (weeping wattle) was purified by chromatographic procedures involving sephadex g-50, deae-cellulose and deae-sepharose. it comprises 162 amino acid residues (molecular mass 18 000 da) including 4 half-cystine residues and resembles the kunitz-type proteinase inhibitors. the n-terminal primary structure of de-1 showed homology with kunitz soybean trypsin inhibitor and also with the proteinase inhibitors from albizzia julibrissin ...19817309008
purification and some properties of two proteinase inhibitors (de-1 and de-3) from erythrina latissima (broad-leaved erythrina) seed.two proteinase inhibitors, de-1 and de-3, were purified from erythrina latissima seeds. whereas de-1 inhibits bovine chymotrypsin and not bovine trypsin, de-3 inhibits trypsin but not chymotrypsin. the molecular weights and the amino acid compositions of the two inhibitors resemble the corresponding properties of the kunitz-type proteinase inhibitors. the n-terminal primary structure of de-3 showed homology with soybean trypsin inhibitor (kunitz) and also with the proteinase inhibitors (a-ii and ...19816894742
flavonol acylglycosides from flower of albizia julibrissin and their inhibitory effects on lipid accumulation in 3t3-l1 cells.obesity is a serious health problem worldwide. we investigated the anti-obesity effect of the flower of albizia julibrissin durazz. (leguminosae). a 90% etoh extract of the flower inhibited adipogenesis in 3t3-l1 preadipocytes, as well as the activity of glycerol-3-phosphate dehydrogenase (gpdh) activity. new flavonol acylglycosides (1-4) and eighteen known compounds (5-22) were isolated by bioassay-directed fractionation. these new glycosides were elucidated to be 3″-(e)-p-coumaroylquercitrin ( ...201222223384
[effects of nacl stress on the seedling growth and k(+)- and na(+) -allocation of four leguminous tree species].taking the pot-cultured seedlings of four leguminous tree species (albizia julibrissin, robinia pseudoacacia, sophora japonica, and gleditsia sinensis) as test materials, this paper studied their growth indices, critical salt concentration (c50), and k+ and na+ allocation under different levels of nacl stress, aimed to understand the difference of test tree species in salt tolerance. nacl stress inhibited the seedling growth of the tree species. under nacl stress, the dry matter accumulation dec ...201121812288
rapid profiling and identification of triterpenoid saponins in crude extracts from albizia julibrissin durazz. by ultra high-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight tandem mass spectrometry.ultra high-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight tandem mass spectrometry (uhplc/esi-q-tof-ms/ms) was applied to separate and identify triterpenoid saponins in crude extract from the stem bark of albizia julibrissin durazz. the molecular weights were determined by comparing quasi-molecular ions [m+nh(4)](+) in positive mode and [m-h](-) and [m-2h](2-) ions in negative mode. the ms/ms spectra of the [m-h](-) ions for saponins provided a w ...201121530133
three new oleanane triterpenoid saponins acetylated with monoterpenoid acid from albizia julibrissin.three new minor oleanane triterpenoid saponins acetylated with monoterpenoid acid, julibroside j(32), julibroside j(35) and julibroside j(36), along with one new natural product, prosapogenin 9, were isolated from the stem bark of albizia julibrissin. their structures were elucidated on the basis of the chemical and spectroscopic evidences.201020562005
prescriptions of chinese herbal medicines for insomnia in taiwan during 2002.chinese herbal medicine (chm) has been commonly used for treating insomnia in asian countries for centuries. the aim of this study was to conduct a large-scale pharmaco-epidemiologic study and evaluate the frequency and patterns of chm use in treating insomnia. we obtained the traditional chinese medicine (tcm) outpatient claims from the national health insurance in taiwan for the year 2002. patients with insomnia were identified from the diagnostic code of international classification of diseas ...201119339485
a new triterpenoid saponin from albizia julibrissin durazz.a new triterpenoid, saponin hehuanoside a, was isolated together with the known triterpenoid saponins 2, 3, and 4 from the stem bark of albizia julibrissin. with the help of chemical and spectral analyzes (ir, ms, 1d-nmr, and 2d-nmr), the structure of the new triterpenoid saponin was elucidated as 21-o-[(6s)-2-trans-2,6-dimethyl-6-o-beta-d-quinovopyranosyl-2,7-octadienoyl]-3-o-beta-d-xylopyranosyl-(1 --> 2)-beta-d-fucopyranosyl-(1 --> 6)-beta-d-2-deoxy-2-acetamidoglucopyrasyl acacic acid 28-o-al ...200918696332
inferring recruitment history from spatial genetic structure within populations of the colonizing tree albizia julibrissin (fabaceae).comparative analyses of spatial genetic structure (sgs) among species, populations, or cohorts give insight into the genetic consequences of seed dispersal in plants. we analysed sgs of a weedy tree in populations with known and unknown recruitment histories to first establish patterns in populations with single vs. multiple founders, and then to infer possible recruitment scenarios in populations with unknown histories. we analysed sgs in six populations of the colonizing tree albizia julibriss ...200818510586
[determination of physiological indices in albizzia julibrissin durazz seedlings under alkaline stress with visible spectrophotometry].there is a large area of saline-alkali soil in our country, and soil alkalization is always a problem affecting urban gardening. to examine the capacity of alkaline resistance of albizzia julibrissin durazz seedlings, the contents of mda, soluble sugar and proline, and the activity of pod and sod in albizzia julibrissin durazz tree body were measured by means of visible spectrophotometry. also, the change patterns of the five indexes with different treatment concentration and time were analyzed. ...200818479036
synthesis of a tetra- and a trisaccharide related to an anti-tumor saponin "julibroside j28" from albizia julibrissin.simple and convergent synthesis of a tetra- and a trisaccharide portions of an antitumor compound julibroside j(28), isolated from albizia julibrissin, that showed significant in vitro antitumor activity against hela, bel-7402 and pc-3m-1e8 cancer cell lines is reported. the tetrasaccharide has been synthesized as its p-methoxyphenyl glycoside starting from commercially available d-glucose, l-rhamnose and l-arabinose. the trisaccharide part has been synthesized from commercially available n-acet ...200817701454
hierarchical patterns of paternity within crowns of albizia julibrissin (fabaceae).the floral architecture and phenology of the tree species albizia julibrissin (fabaceae) offer the potential for flowers within inflorescences to share common pollen donors. patterns of paternity within individual tree crowns may differ among isolated individuals and those in populations due to differences in pollinator foraging behavior. to determine how genetic diversity is partitioned within individual seed pools and whether these patterns differ among isolated and population trees, we obtain ...200721642213
a cytotoxic saponin from albizia julibrissin.a new triterpenoidal saponin (1: julibroside j(21)) with a xylopyranosyl moiety located at its c-21 side chain was isolated from albizia julibrissin durazz. (leguminosae), and its structure was determined on the basis of comprehensive spectroscopic analyses. compound 1 showed marked inhibitory action against bel-7402 cancer cell line at 10 microg/ml.200616880673
julibroside j8-induced hela cell apoptosis through caspase pathway.the julibroside j8 was isolated from the albizia julibrissin and evaluated for antiproliferatived on six cancer cell lines (bgc-823, bel-7402, hela, pc-3mie8, mda-mb-435 and lh-60) in vitro. julibroside j8 at 100 microg ml- 1 (46.08 micromol.l- 1) significantly inhibited growth in the first three cell lines. in addition, in hela cells typical apoptotic changes in morphology were observed, and further, nuclear damage was observed by giemsa staining and dna fragmentation was exhibited. effects of ...200916864463
three anti-tumor saponins from albizia julibrissin.three new triterpenoid saponins, julibroside j(29) (1), julibroside j(30) (2), and julibroside j(31) (3), were isolated from the stem bark of albizia julibrissin durazz. (leguminosae) by using chromatographic method. their structures were established by spectroscopic methods. compounds 1, 2, and 3 displayed significant anti-tumor activities in vitro against pc-3m-1e8, hela, and mda-mb-435 cancer cell lines at 10microm assayed by srb and mtt methods.200616504508
identification and quantification of glycoside flavonoids in the energy crop albizia julibrissin.oxygen radical absorbance capacity (orac) values showed that methanolic extracts of albizia julibrissin foliage displayed antioxidant activity. high performance liquid chromatography (hplc) and mass spectrometry (ms) techniques were utilized in the identification of the compounds. the analysis confirmed the presence of three compounds in a. julibrissin foliage methanolic extract: an unknown quercetin derivative with mass of 610 da, hyperoside (quercetin-3-o-galactoside), and quercitrin (querceti ...200716481160
a pair of isomeric saponins with cytotoxicity from albizzia julibrissin.two new saponins have been isolated from the stem barks of albizzia julibrissin durazz, and their structures identified as 3-o-[beta-d-xylopyranosyl-(1 --> 2)-beta-d-fucopyranosyl-(1 --> 6)-beta-d-2-deoxy-2-acetoamidoglucopyranosyl]-21-o-{(6s)-2-trans-2-hydroxymethyl-6-methyl-6-o-[4-o-((6s)-2-trans-2-hydroxymethyl-6-hydroxy-6-methyl-2,7-octadienoyl)-beta-d-quinovopyranosyl]-2,7-octadienoyl}-acacic acid-28-o-beta-d-glucopyranosyl-(1 --> 3)-[alpha-l-arabinofuranosyl-(1 --> 4)]-alpha-l-rhamnopyrano ...200516308192
an antitumor compound julibroside j28 from albizia julibrissin.a new triterpenoid saponin, julibroside j(28) (1), was isolated from the stem bark of albizia julibrissin durazz (leguminosae) by using chromatographic method. the structure of 1 was established by spectroscopic methods. 1 displayed significant antitumor activity in vitro against pc-3m-1e8, bel-7402, and hela cancer cell lines at 10 microm assayed by srb method.200516112860
diastereoisomeric saponins from albizia julibrissin.the structures of four new diastereoisomeric triterpenoidal saponins julibroside j5, j8, j12 and j13 (1-4) isolated from albizia julibrissin durazz. (leguminosae) have been determined on the basis of comprehensive spectroscopic analysis and chemical degradation. julibroside, j8 and j13 showed marked cytotoxic activities against bel-7402 cancer cell line at 100 microg/ml.200515854602
phenolic glycosides from the stem bark of albizzia julibrissin.from the stem bark of albizzia julibrissin durazz (leguminosae), two new phenolic glycosides (albibrissinosides a and b) were isolated. their structures were determined by spectroscopic analysis. the albibrissinoside b was found to be a radical scavenger on the 1,1-diphenyl-2-picrylhydrazyl (dpph) radical.200415577257
[advances in study on bark of albizzia julibrissin].cortex albizziae, the stem bark of the leguminous plant albizzia julibrissin, is specified in chinese pharmacopoeia as a traditional chinese medicine used to relieve melancholia and uneasiness of body and mind, invigorate the circulation of blood and subside a swelling. this article reviews the recent advances in chemical constituents and pharmacological activities of cortex albizziae.200415503760
[isolation and identification of chemical constituents from albizia julibrissin durazz].to study the chemical constituents of the stem bark of albizia julibrissin durazz.200415303140
isolation of flavonoids and a cerebroside from the stem bark of albizzia julibrissin.from the etoac fraction of the meoh extract of albizzia julibrissin (leguminosae), a rare 5-deoxyflavone (geraldone, 1), isookanin (2), luteolin (3), an isoflavone (daidzein, 4), five prenylated flavonoids [sophoflavescenol (5), kurarinone (6), kurarinol (7), kuraridin (8) and kuraridinol (9)], a cerebroside (soya-cerebroside i, 10), and (-)-syringaresinol-4-o-beta-d-glucopyranoside (11) were isolated and characterized on the basis of spectral data. compounds 2, 3, and 11, showed 1,1-diphenyl-2- ...200415283458
[isolation and identification of chemical constituents from albizia julibrissin durazz.].to study the chemical constituents of the stem bark of albizia julibrissin duraz..200312920839
a new (e)4-hydroxy-dodec-2-enedioic acid from the stem bark of albizzia julibrissin.a new unsaturated hydroxy acid was isolated from the stem bark extract of albizzia julibrissin through repeated silica gel and sephadex lh-20 column chromatography. the chemical structure of the new acid was determined as (e)-4-hydroxy-dodec-2-enedioic acid on the basis of several spectral data including 2d-nmr. the stereochemical feature of the double bond was determined to be e on the basis of the coupling pattern of related proton signals in the 1h-nmr and cosy experiments.200312723933
[the structure identification of julibroside j6 from albizia julibrissin durazz].to study the saponin from albizia julibrissin.200012212079
[studies on chemical constituents from the flower of albizzia julibrissin durazz].to study the chemical constituents in the flower of albizzia julibrissin.200012212069
a triterpenoid saponin from albizia julibrissin.a triterpenoid saponin (1) was obtained from the stem barks of albizia julibrissin durazz. its structure was elucidated as 3-o-[beta-d-xylopyranosyl-(1 --> 2)-alpha-l-arabinopyranosyl-(1 --> 6)-beta-d-glucopyranosyl]-21-o-[(6s)-2-trans-2-hydroxymethyl-6-methyl-6-o-beta-d-quinovopyranosyl-2, 7-octadienoyl]-16-deoxy-acacic acid 28-o-beta-d-glucopyranosyl-(1 --> 3)-[alpha-l-arabinofuranosyl-(1 --> 4)]-alpha-l-rhamnopyranosyl-(1 --> 2)-beta-d-glucopyranosyl ester (1), named as julibroside j26, based ...199911523552
sedative activity of two flavonol glycosides isolated from the flowers of albizzia julibrissin durazz.the flowers of albizzia julibrissin are used as a sedative in oriental traditional medicine. the phytochemical study of this plant allowed the isolation of two flavonol glycosides, quercitrin (1) and isoquercitrin (2). the sedative activity of these compounds was evaluated, and both compounds 1 and 2 increased pentobarbital-induced sleeping time in dose-dependent manner in mice. these results support the use of the flowers of this plant as a sedative agent.200010904180
two diastereomeric saponins with cytotoxic activity from albizia julibrissin.two diastereomeric saponins, julibrosides j1 (1) and j9 (2), both of which show cytotoxic activity, were obtained from the stem bark of albizia julibrissin durazz. on the basis of chemical and spectral evidence [l.b. ma et al., carbohydr. res., 281 (1996) 35-46], the structure of 1 was revised as 3-o-[beta-d-xylopyranosyl-(1-->2)-alpha-l-arabinopyranosyl-(1-->6) -beta-d-glucopyranosyl]-21-o-[(6s)-2-trans-2-hydroxymethyl-6-methyl-6-o- [4-o-((6r)-2-trans-2,6-dimethyl-6-o-(beta-d-quinovopyranosyl)- ...200010724532
leaf-opening substance in the nyctinastic plant, albizzia julibrissin durazz.cis-p-coumaroylagmatine (1) was isolated from albizzia julibrissin durazz, a nyctinastic plant, as a leaf-opening substance. the compound was quite effective for opening the plant leaves at 5×10(-6) m at night, but was not effective for other nyctinastic plants. the bioactive fraction with leaf-closing activity was also separated from the plant extract. although the leaf-opening activity of the plant extract changed between the day and night, the content of 1 was almost constant through a 24-h d ...199827393586
cytotoxic glycosides from albizia julibrissin.during the course of a study of leguminous plants, cytotoxicity was demonstrated by the crude saponin fraction of albizia julibrissin. following chromatographic purification, the structures of three novel saponins, julibrosides i-iii (1-3), inclusive of a cytotoxic principle, were elucidated. a comparison of the cytotoxicity of julibrosides (1-3) and their prosapogenins (4-15) prepared by alkaline hydrolysis clearly indicated that both an alpha-l-arabinofuranosyl-(1-->4)-[beta-d-glucopyranosyl-( ...19979051910
[studies on the triterpene sapogenins from albizziae cortex].a new sapogenin named julibrogenin a was isolated from the stem bark of albizzia julibrissin durazz (albizziae cortex). based on chemical and spectral studies, their structure has been identified as 21-o-(2-hydroxymethyl-6-methyl-6-methoxyl-2,7-octadienoyl)-acacic acid. in addition, machaerinic acid lactone, machaerinic acid methylester, acacigenin b and julibrotriterpenoidal lactone a were also isolated from this plant and characterised.199711243201
[structure determination of three saponins from the stem bark of albizzia julibrissin durazz].three new saponins named julibroside j1, j2 and j3 were isolated from the stem bark of albizzia julibrissin durazz (albizziae cortex). based on chemical and spectral methods, e.g. 1h- and 13c-nmr, dept, cosy ch-cosy, tocsy, hmqc-cosy, hmqc-tocsy, noesy, hmbc, their structures have been identified as; julibroside j1 (one triterpene, nine sugars, two monoterpenes i); julibroside j2(one triterpene, eight sugars two monoterpenes ii); julibroside j3(one triterpene, nine sugars two monoterpenes iii).199711243193
promotion ofin vitro shoot formation from excised roots of silktree (albizzia julibrissin) by an oxime ether derivative and other ethylene inhibitors.this report describes the regeneration response of excised seedling roots of silktree (albizzia julibrissin) to added ethylene precursors/generators (1-amino-cyclopropane-1-carboxylic acid [acc], 2-chloroethylphosphonic acid [cepa]), biosynthesis inhibitors (aminoethoxyvinylglycine [avg], an oxime ether derivative [oed={[(ispropylidene)-amino]oxy}-acetic acid-2-(methoxy)-2-oxoethyl ester], cocl(2) [co(++)]), and an ethylene action inhibitor (agno3 [ag(+)]). when placed on b5 medium, about 50% of ...199524185673
effect of gibberellin biosynthesis inhibitors on shoot regeneration from hypocotyl explants of albizzia julibrissin.hypocotyl explants of albizzia julibrissin were placed on gamborg's b5 medium supplemented with various levels of paclobutrazol, uniconazole, prohexadione calcium, or ga3. callus formation was evident within one week after placement of the explants on the culture media. green nodule-like structures protruded from the distal end of the explants within 10 days and developed into shoots within a month. these shoots readily formed adventitious roots when placed on fresh culture medium. all three of ...199324196300
six new triterpenoidal glycosides including two new sapogenols from albizziae cortex. v.six new triterpenoid glycosides called julibrosides a1-a4, b1 and c1 were isolated from albizziae cortex, the dried stem bark of albizzia julibrissin durazz. their structures were determined based on spectral and chemical evidence. julibrosides b1 and c1 had new sapogenols, designated julibrogenin b and c, respectively, while julibrosides a3 included n-acetyl-d-glucosamine as a sugar component.19921294330
[isolation and identification of julibrotriterpennoidal lactone a from albizia julibrissin durazz].julibrotriterpennoidal lactone a was isolated from the cortex of albizia julibrissin. its structure (the c28----c21 lactone of, 3 beta, 16 beta, 21 beta-trihydroxy-delta 12-oleanen-28-oic acid) has been determined on the basis of spectral evidence (ir, 1hnmr, 13c nmr and ms).19921418582
an arrhythmic-inducing glycoside from albizzia julibrissin durazz, iv.three pyridoxine derivatives have been isolated from the fresh stem bark of albizzia julibrissin durazz.. one of them, named julibrin ii, was found to exhibit arrhythmic-inducing action. however, neither the others having the same aglycone nor some glycosides having the same sugar unit showed the action.19921611699
calcium-induced patterns of calcium-oxalate crystals in isolated leaflets of gleditsia triacanthos l. and albizia julibrissin durazz.for experimental induction of crystal cells (=crystal idioblasts) containing calcium-oxalate crystals, the lower epidermis was peeled from seedling leaflets of gleditsia triacanthos l., exposing the crystal-free mesophyll and minor veins to the experimental solutions on which leaflets were floated for up to 10 d under continous light. on 0.3-2.0 mm ca-acetate, increasing numbers of crystals, appearing 96 h after peeling, were induced. the pattern of crystal distribution changed with ca(2+)-conce ...198524241134
chronobiology of aging in albizzia julibrissin: i. an automated, computerized system for monitoring leaflet movement; the rhythm in constant darkness.we are using leaflet movements in albizzia julibrissin as a model system for investigating the chronobiology of aging. to monitor leaflet movements during long dark periods with adequate temporal and spatial resolution, we designed an automated, computerized photoelectric monitoring system. each of 12 leaflet pairs was positioned in an individual light-proof container, with one leaflet immobilized. the angle of the mobile leaflet was monitored by a photosensor array using a low intensity infrare ...198416663959
isolation of a new monoterpene conjugated triterpenoid from the stem bark of albizzia julibrissin. 20066481365
effects of age, water stress, and 1-aminocyclopropane-1-carboxylic acid on leaflet movement in albizzia julibrissin.the movement patterns of albizzia julibrissin leaflets transferred from light to darkness differ for leaflets of different age: the older the leaflet, the slower and less completely it closes. water stress, which enhances ethylene synthesis in other plants, and 1-aminocyclopropane-1-carboxylic acid (acc), precursor of ethylene, both mimic the effect of aging by reducing the rate and extent of dark-induced closure. brief far-red compared to red irradiation before darkness does not appear to alter ...198316662885
effect of far-red and green irradiation on the nyctinastic closure of albizzia leaflets.the nyctinastic closing of albizzia julibrissin pinnules is delayed by exposure to far-red radiation at 710 and 730 nanometers, with the former more effective than the latter. far-red radiation at 750 and 770 nanometers has no effect on the process. red light at 660 nanometers, which by itself has no effect, delayed closure when given before or simultaneously with far-red radiation at 750 or 770 nanometers. low doses of green light, on the other hand, prevented all far-red radiations from delayi ...198216662597
role of boron in the far-red delay of nyctinastic closure of albizzia pinnules.boron has been found to be necessary for the delaying action of 710 nanometer irradiation on the nyctinastic closing of albizzia julibrissin pinnules. it is effective only over a narrow micromolar range. in contrast, the delaying action of 470 nanometer irradiation on closure is inhibited by boron. the effect of boron on leaflet closing occurs rapidly. boron is suggested to be involved in a phytochrome action that precedes and is required for a delaying effect on pinnule closing subsequently ind ...198216662472
the effects of blue and far red light on rhythmic leaflet movements in samanea and albizzia.the opening of excised samanea saman pulvini is promoted by prolonged blue or far-red irradiation. far-red effects are attributed partially but not completely to lowering of the pfr level. two hours of continuous or pulsed blue light or pulsed far-red light (total dosage = 2.2 x 10(18) quanta per square centimeter in all cases) also phase shifts the rhythm in samanea while two hours of continuous blue light phase shifts the rhythm in the related plant albizzia julibrissin. the same pigments appe ...198116661802
the reactive site amino acid sequences of silktree (albizzia julibrissin) seed proteinase inhibitors.two silktree (albizzia julibrissin) seed proteinase inhibitors, a-ii and b-ii, which are homologs with soybean trypsin inhibitor (kunitz), were cleaved with cyanogen bromide. sequence analyses of the resulting fragments and comparison with the soybean inhibitor revealed the amino acid sequences around the reactive sites of both inhibitors. the primary reactive site of trypsin-chymotrypsin inhibitor a-ii was identified as arg66-ile67 and that for chymotrypsin-elastase inhibitor b-ii as leu62-met6 ...19807419495
vacuolar reorganization in the motor cells of albizzia during leaf movement.during the leaf movements of albizzia julibrissin durazzini, volume changes in the motor cells of the pulvinule (tertiary pulvinus) are closely correlated with a reversible reorganization of the vacuolar compartment. motor cells have central vacuoles when expanded, but become multivacuolate during the time the cell volume decreases. the central vacuole reforms - apparently by fusion of small vacuoles - during motor-cell expansion. the volume changes of the vacuolar compartment account for all of ...198024309827
effect of vanadate on rhythmic leaflet movement in albizzia julibrissin.vanadate (na(3)vo(4)) selectively and reversibly affects the rhythmic movement of albizzia julibrissin leaflets. leaflets floated on 1 millimolar vanadate open at the same rate or more rapidly than controls, but closure is inhibited. after 6 to 24 hours incubation, the inhibition can be reversed by a 24-to 48-hour period on water or control buffer. recovery is complete in light-dark cycles, and it is almost complete under free-running conditions (prolonged darkness). leaflets floated on 10 milli ...197916661080
a simple and automatic leaflet movement-monitoring system.a simple and automatic leaflet movement-monitoring system using phototransistors is described for albizzia julibrissin.197816660453
circadian rhythmicity in excised samanea pulvini: i. sucrose-white light interactions.the rhythmic movement of excised samanea saman pulvini incubated in h(2)o or 50 mm sucrose was monitored during extended periods of white light (cool white fluorescent, 2,000 ft-c), darkness, or alternating white light (16 hr) and darkness (8 hr). in continuous white light, the rhythm damps at an intermediate angle after only one cycle, whether pulvini are incubated in sucrose or h(2)o. the rhythm also damps after the first cycle when darkened pulvini are incubated in h(2)o, but it persists for ...197616659690
potassium-linked chloride fluxes during rhythmic leaf movement of albizzia julibrissin.transverse sections of albizzia pulvinules were examined with an electron microprobe to determine ion fluxes associated with turgorcontrolled leaflet movements. k(+) and cl(-) concentrations are high in the flexor and low in the extensor region of closed pulvini. both ions migrate out of the flexor and into the extensor during opening as previously described for k(+). the distribution of these elements is significantly correlated in each phase of the rhythmic cycle examined, but only 50 to 60% o ...197616659645
rhythmic leaflet movement in albizzia julibrissin: effect of electrolytes and temperature alteration.the rhythmic movement of darkened albizzia leaflets is accompanied by k(+) flux in pulvinule motor cells whose turgor changes control opening and closing. the azide-sensitive open phase is promoted by an increase in temperature from 16 to 33c (q(10) = 3), implying active transport of k(+) ions during this period. the azide-insensitive closed phase is less temperature-sensitive and has a q(10) less than 1, implying diffusion or some other physical process as the predominant pathway of k(+) flux a ...197316658532
quantifying rhythmic movements of albizzia julibrissin pinnules.the cosinor technique, previously applied to studies of animal rhythms, is used to assess the circadian rhythm in pinnule movement of albizzia julibrissin. the method provides a quantitative approach for studying rhythm properties of either intact or excised pinnules. phase shifting in a. julibrissin, as compared to the usually slower phase shifts of various circadian phenomena in the insect, bird, and mammal, occurs within 1 day or two. rhythm adjustment in the pinnules takes place more rapidly ...197316658471
phytochrome-controlled nyctinasty in albizzia julibrissin: v. evidence against acetylcholine participation. 197216658209
phytochrome-controlled nyctinasty in albizzia julibrissin: iv. auxin effects on leaflet movement and k flux.indole-3-acetic acid, alpha-naphthylacetic acid, and 2,4-dichlorophenoxyacetic acid (0.001 to 1.0 mm) inhibit the nyctinastic closure of excised albizzia leaflet pairs; antiauxins and auxin analogs are ineffective, and the auxin effects seem not to be mediated by ethylene. indoleacetic acid (0.001 to 0.1 mm) also promotes rhythmic opening in the dark, but is ineffective during that phase of rhythmic closure ("leaky phase") which is insensitive to azide. at these concentrations, all of the indole ...197216658148
phytochrome-controlled nyctinasty in albizzia julibrissin: iii. interactions between an endogenous rhythm and phytochrome in control of potassium flux and leaflet movement.prolonged irradiation during appropriate parts of the diurnal cycle promotes the opening of albizzia julibrissin leaflets. leaflets also open without illumination, but such opening starts later and is slower and less complete. opening in the dark is accompanied by lower potassium efflux from dorsal pulvinule motor cells but equal or greater potassium movement into ventral motor cells than occurs during opening in the light. far red-absorbing phytochrome inhibits opening in the dark, indicating t ...197116657871
pulvini as the photoreceptors in the phytochrome effect on nyctinasty in albizzia julibrissin.the fact that far-red pretreatment slows the closing response of albizzia julibrissin pinnules to darkness was used to locate the photoreceptor region for the role of phytochrome in nyctinasty, and to determine whether the effect is localized or translocated. illumination of pinnule tissue alone induced no response, while illumination of an area as narrow as 1 mm, including only the tertiary pulvini and adjacent portions of rachilla and pinnules, was sufficient for a full response. this suggests ...196816656829
phytochrome control of rapid nyctinastic movements and membrane permeability in albizzia julibrissin.the rapid nyctinastic movements of albizzia julibrissin pinnules are under the control of phytochrome. when given prior to a dark period, red light facilitates and far-red light inhibits pinnule closure in the dark. these light effects are mutually photoreversible. the opening reaction of the pinnules following a dark period is mediated mainly by blue light. the nyctinastic closure response is accompanied by an increased rate of electrolyte efflux from the cut pinna base. this observation, coupl ...196724522504
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