1.Study on the antibacterial potential in vitro of flavonoids in leaves of some species of clerodendron, verbenaceae in Vietnam
Pharmaceutical Journal 1998;272(12):12-14
The antibacterial effects of flavonoid substances isolated from plants belonging to C.clerodendron species were studied. They are included Clerodendron fragrant, C.informatum, C.cytophyllum. The results showed that flavonoids from these plants presented antibacterial activities on both strain of Gram (+) and Gram(-) but stronger effect obtained with Gram(+). The antifungal activity was week or not resulted for all these three plants. The mixed flavonoid solutions may give better antibacterial effects depending on the combination of extracted flavonoid solutions.
Flavonoids
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Verbenaceae
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Pharmaceutical Preparations
2.DNA bacording of Verbenaceae medicinal plant by using ITS2 and psbA-trnH region.
Qian CHEN ; Yimei LIU ; Zhen LIU ; Shilin CHEN ; Keli CHEN
China Journal of Chinese Materia Medica 2012;37(8):1107-1113
OBJECTIVETo evaluate the ability of several hotspot candidate sequence of DNA barcodes for identifying medicinal plant species in Verbenaceae.
METHODUsing universal primers, three chloroplast sequences, psbA-trnH, rbcL, matK, two nuclear ribosomal DNA ITS2 and ITS were amplified and sequenced. PCR amplification and sequencing efficiency, intra- and inter-specific variation, barcoding gap and identification efficiency (with BLAST 1 and Nearest Distance methods) were used to evaluate these loci.
RESULTThe rate of successful amplification using matK was too low to further analyze, and the rate of successful amplification and sequencing using psbA-trnH, ITS, and ITS2 and rbcL sequence was 83.6%, 83.6%, 96.4%, 98.2%, respectively. The rate of successful identification using psbA-trnH, ITS, and ITS2 was 100% at the species level except that rbcL was 77.8%, 75.9% for 55 samples belonging to 32 species, but ITS2 did better in intra- and inter-specific variation, barcoding gap than the other loci. The rate of successful identification of ITS2 was 89.5%, 87.6% even when joining the date of 165 samples from GenBank.
CONCLUSIONIt proposes that the combination of ITS2 and psbA-trnH senquence is promising for the identification of the species in Verbenaceae.
DNA Barcoding, Taxonomic ; methods ; DNA, Plant ; genetics ; DNA, Ribosomal Spacer ; genetics ; Plants, Medicinal ; classification ; genetics ; Verbenaceae ; classification ; genetics
3.Characterization of cytotoxic compound from mangrove derived fungi Irpex hydnoides VB4.
B Valentin BHIMBA ; D A Agnel Defora FRANCO ; Geena Mary JOSE ; Jibi Merin MATHEW ; Elsa Lycias JOEL
Asian Pacific Journal of Tropical Biomedicine 2011;1(3):223-226
OBJECTIVETo investigate the cytotoxic activity of endophytic fungi isolated from mangrove fungi.
METHODSIn the present study the DNA was isolated and the ITS region of 5.8s rRNA was amplified using specific primers ITS 1 and ITS4 and sequence was determined using automated sequencers. Blast search sequence similarity was found against the existing non redundant nucleotide sequence database thus, identified as Aspergilus flavus, Hyporcaea lixii, Aspergillus niger, Eutorium amstelodami, Irpex hydnoides and Neurospora crassa. Among the seven isolates, one fungi Irpex hydnoides was selected for further studies. The fungi were grown in sabouraud broth for five days and filtrate were separated and subjected to ethyl acetate for further studies.
RESULTSNearly half (49.25%) of the extracts showed activity (IC50 of 125µg/mL). These values were within the cutoff point of the National Cancer Institute criteria for cytotoxicity (IC50<20 µg/mL) in the screening of crude plant extracts. The GC MS analysis revealed that the active principals might be Tetradecane (6.26%) with the RT 8.606.
CONCLUSIONSIt is clear from the present study that mangrove fungi with bioactive metabolites can be expected to provide high quality biological material for high throughout biochemical, anti cancer screening programmes. The results help us conclude that the potential of using metabolic engineering and post genomic approaches to isolate more novel bioactive compounds and to make their possible commercial application is not far off.
Basidiomycota ; chemistry ; classification ; genetics ; metabolism ; Biological Products ; chemistry ; toxicity ; Cell Survival ; drug effects ; DNA, Ribosomal Spacer ; Gas Chromatography-Mass Spectrometry ; Hep G2 Cells ; Humans ; Verbenaceae ; microbiology
4.Pharmacokinetics of acteoside following single dose intragastric and intravenous administrations in dogs.
Wei ZHANG ; Shi-Xia HUO ; Yan-Li WEN ; Han XING ; Qing ZHANG ; Ning LI ; Di ZHAO ; Xiao-Lin SUN ; Jie XU ; Ming YAN ; Xi-Jing CHEN
Chinese Journal of Natural Medicines (English Ed.) 2015;13(8):634-640
Acteoside (verbascoside), a phenylethanoid glycoside widely distributed in various plants, has been shown to have potential activity against Alzheimer's disease, attracting great attentions recently. The present study was designed to develop a selective and sensitive LC-MS/MS method for the determination of acteoside in biological samples and carry our a pharmacokinetic (PK) study in beagle dogs. The PK parameters were calculated using non-compartmental models. Following a single-dose oral administration, acteoside was rapidly absorbed and eliminated, with Tmax being between 30 to 45 min and terminal half-life being about 90 min. The areas under the time-concentration curve (AUC) were 47.28 ± 8.74, 87.86 ± 13.33, and 183.14 ± 28.69 mg · min · L(-1) for oral administration of 10, 20, and 40 mg · kg(-1), respectively, demonstrating that the exposure of acteoside proportionally increased with the dose level. The absolute bioavailability of acteoside was around 4%. For all the PK parameters, there were large variations between individual dogs. In conclusion, the pharmacokinetic characteristics observed in the present study can be of great value to help better understand the pharmacological properties of acteoside and to improve the outcome of its clinical use.
Administration, Intravenous
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Administration, Oral
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Alzheimer Disease
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drug therapy
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Animals
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Area Under Curve
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Biological Availability
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Chromatography, High Pressure Liquid
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Dogs
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Female
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Glucosides
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pharmacokinetics
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Intestinal Absorption
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Male
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Phenols
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pharmacokinetics
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Plant Extracts
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pharmacokinetics
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Tandem Mass Spectrometry
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Verbenaceae
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chemistry
5.Caffeoyl phenylethanoid glycosides from Callicarpa kwangtungensis.
Xiao HU ; Li LI ; Yi-Fang YANG ; Chun-Yue HUANG ; Guang-Lei HUANG
China Journal of Chinese Materia Medica 2014;39(9):1630-1634
Phytochemical investigation on the EtOH extract from the aerial part of Callicarpa kwangtungensis led to the isolation and characterization of 10 caffeoyl phenylethanoid glycosides, 2'-acetylacteoside (1), tubuloside E (2), acteoside (3), tubuloside B (4), isoacteoside (5), alyssonoside (6), 2'-acetylforsythoside B (7), brandioside (8), forsythoside B (9), and poliumoside (10). Compound 4 was isolated from the plants of Verbenaceae,and 6 was obtained from the Callicarpa genus, for the first time, while compounds 1, 2, 5 and 7 were firstly reported from the plant.
Caffeic Acids
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chemistry
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isolation & purification
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Catechols
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chemistry
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isolation & purification
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Chromatography, High Pressure Liquid
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Ethanol
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chemistry
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Glucosides
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chemistry
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isolation & purification
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Glycosides
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chemistry
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isolation & purification
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Phenols
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chemistry
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isolation & purification
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Verbenaceae
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chemistry
6.Analysis of Essential oil, Quantification of Six Glycosides, and Nitric Oxide Synthase Inhibition Activity in Caryopteris incana
Agung NUGROHO ; Sang Kook LEE ; Donghwa KIM ; Jae Sue CHOI ; Kyoung Sik PARK ; Byong Min SONG ; Hee Juhn PARK
Natural Product Sciences 2018;24(3):181-188
Caryopteris incana (Verbenaceae) has been used to treat cough, arthritis, and eczema in Oriental medicine. The two fractions (CHCl₃- and BuOH fractions) and the essential oil of the plant material were subjected to the inducible nitric oxide synthase (iNOS) assay. The IC₅₀ of the CHCl₃ fraction and the essential oil on LPS-induced macrophage RAW 264.7 cells were 16.4 µg/mL and 23.08 µg/mL, respectively. On gas chromatography (GC)-mass spectroscopy (MS) analysis, twenty-five components representing 85.5% amount of total essential oil were identified. On the chromatogram, three main substances, trans-pinocarveol, cis-citral, and pinocarvone, occupied 18.8%, 13.5% and 18.37% of total peak area. Furthermore, by HPLC-UV analysis, six compounds including one iridoid (8-O-acetylharpagide)- and five phenylethanoid glycosides (caryopteroside, acteoside, phlinoside A, 6-O-caffeoylphlinoside, and leucosceptoside A) isolated from the BuOH fraction were quantified. The content of six compounds were shown as the following order: caryopteroside (162.35 mg/g) > 8-O-acetylharpagide (93.28 mg/g) > 6-O-caffeoylphlinoside (28.15mg/g) > phlinoside (22.60mg/g) > leucosceptoside A (16.87 mg) > acteoside (7.05 mg/g).
Arthritis
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Chromatography, Gas
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Chromatography, High Pressure Liquid
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Cough
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Eczema
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Glycosides
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Macrophages
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Medicine, East Asian Traditional
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Nitric Oxide Synthase Type II
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Nitric Oxide Synthase
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Nitric Oxide
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Plants
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RAW 264.7 Cells
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Spectrum Analysis
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Verbenaceae