Publications by authors named "Lan-ying Chen"

Article Synopsis
  • This study investigated how Dalbergia cochinchinensis could improve coronary microvascular dysfunction induced by microsphere embolization in rats using advanced visualization and metabolomics techniques.
  • A total of sixty male SD rats were divided into five groups, including control and varying doses of the D. cochinchinensis extract administered over seven days.
  • Results indicated that D. cochinchinensis significantly improved blood flow, reduced fibrinogen levels, and decreased myocardial enzyme levels compared to the control group, suggesting potential therapeutic effects.
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A novel discovery of two hybrid benzodioxepin-dalbergiphenol epimers, named cochindalbergiphenols A-B (1-2), and a benzofuran-dalbergiphenol hybrid, named cochindalbergiphenol C (3), were isolated and identified from the heartwood of Dalbergia cochinchinensis. The structures of all the isolated compounds were identified through NMR and HRESIMS techniques, while the absolute configurations were determined by comparing the experimental and calculated ECD spectra. Compounds 1-3 exhibited potential protective effects against hypoxia/reoxygenation (H/R) induced injury in H9c2 cells.

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This paper aimed to study the effect of Dalbergia cochinchinensis heartwood on plasma endogenous metabolites in rats with ligation of the left anterior descending coronary artery, and to analyze the mechanism of D. cochinchinensis heartwood in improving acute myocardial ischemic injury. The stability and consistency of the components in the D.

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Dalbergia cochinchinensis(DC) is chemically similar to the valuable and scarce Chinese herb Dalbergiae Odoriferae Lignum, and both of them belong to the Dalbergia Leguminosae. DC is used for treating cardiovascular diseases and cancer. However, its potent active ingredient groups and molecular mechanisms in anti-myocardial ischemia are not fully clarified.

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The present study detected the component content in Dalbergiae Odoriferae Lignum by HPLC fingerprint and the multi-component determination method. HPLC analysis was performed on the Agilent ZORBAX SB-C_(18) column(4.6 mm×250 mm, 5 μm).

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To study the effect of anemoside B4 on rats with chronic obstructive pulmonary disease (COPD).Seventy-two SD male rats were randomly divided into blank group and model group.The method of exposure to cigarette smoke and combined with lipopolysaccharide (LPS) was used to replicate the rat model of COPD.

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Viscum articulatum Burm. f. is a parasitic plant rich in flavonoids, triterpenoids, and catechins and has a high nutritional value.

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Seven undescribed neoflavonoids, named melanoxylonins A-G, were isolated from the heartwood of Dalbergia melanoxylon, and all the non-toxic isolates were evaluated for their cardioprotective effect against ischemia/reoxygenation (I/R) injury in H9c2 cells. Of these, melanoxylonin A-D containing the 8-OH group showed better potent cardioprotective effects than the other four congeners. Molecular docking studies confirmed the capacity of melanoxylonin D to interact with the myeloperoxidase (MPO) protein.

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Diets of overloaded purine-rich foods for a long time are one of the important reasons to cause renal lesions. Eucommia ulmoides is one of the traditional Chinese medicine herbs, which has been used to recover functions of the kidney. However, its mechanism remains unclear.

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Context: The Traditional Chinese herb medicine T. Chen (Fabaceae), exerted a protective effect on myocardial ischaemia. Latifolin is a neoflavonoid extracted from .

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Three new neoflavonoids, named (1,8,9)-1,5-dihydroxy-4,12-dimethoxy-8-vinyl-tricyclo[7.3.1.

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A new neoflavonoid, named (+)-3'-hydroxy-4',2,4,5-tetramethoxydalbergiquinol (), and a new benzofuran, named (2,3)-5-hydroxy-6-methoxy-3-methyl-2-(4'-hydroxyphenyl)-2,3dihydrobenzofuran , together with two known neoflavonoids, were isolated from the heartwood of Their structures were elucidated by a combination of spectroscopic methods and comparison with the literature. Compounds were evaluated for inhibitory activity against ATCC 25923, ATCC 6538, CMCC 50041 and ATCC 289065, which all exhibited inactive or weak activity.

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Article Synopsis
  • Dalbergiae Odoriferae Lignum is a valuable and rare hardwood from the endangered Dalbergia odorifera tree in China, leading to high demand and price.
  • Researchers explored D. catifolia as a potential substitute by extracting and analyzing its heartwood using various chromatography techniques, identifying a total of sixteen unique neoflavonoids.
  • The study found that some compounds were identified for the first time from both D. catifolia and D. latifolia, with ten neoflavonoids common to D. odorifera and D. latifolia.
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Neoflavonoids are a kind of characteristic components in the Dalbergia genus. Based on the previous researches, 59 neoflavonoids have been obtained from the Dalbergia genus. According to their molecular skeleton, the neoflavonoids can be divided intodalbergiphenols, dalbergiones, dalbergins, benzophenones and other types.

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A new benzofuran compound, named 2-[5-hydroxy-4-methoxy-2-(3-p-henyl-trans-allyloxy)benzyl]-5-hydroxy-6-methoxy-3-phenylbenzofuran (1), together with (+)-obtusafuran (2) and isoparvifuran (3), was isolated from the heartwood of Dalbergia latifolia. Their structures were elucidated by a combination of spectroscopic methods and comparison with the literature. Compounds 2 and 3 were obtained from this plant for the first time.

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The present study was designed to evaluate the cardioprotective effect of latifolin on pituitrin(Pit) or isoproterenol(ISO)-induced myocardial injury in rats, and further investigate its underlying mechanisms. Rats were administrated sublingually with pituitrin or subcutaneously with isoproterenol to induce acute myocardial ischemia in rats, and lead II electrocardiograph was recorded. In rats with isoproterenol, ELISA assay or colorimetric method was used to detect the content or activity of myocardial injury markers in serum, and the SOD activity and MDA content in myocardium were detected by colorimetric assay; histopathological examination was conducted by HE staining; the frozen section of myocardial tissues was used for DCFH-DA fluorescent staining to detect the content of ROS in myocardium; Western blot was used to detect the protein expression levels of Nrf2, Keap1, HO-1 and NQO1 in myocardium.

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A new diaryl 1,2-diketone, named 1-(2,5-dihydroxy-4-methoxyphenyl)-2-phenylethane-1,2-dione (1), along with eight known compounds (2-9), were isolated from the heartwood of Dalbergia latifolia. They were identified on the basis of spectral data. Compounds 1-7 were obtained from the Dalbergia genus for the first time.

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Objective: To study the protective effect of Imperatae Rhizoma extract on renal tissues in rats with Adriamycin nephrosis, and to explore the possible mechanism.

Methods: The nephrosis model was induced by adriamycin 6.5 mg/kg intravenously in rats.

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Objective: To investigate the chemical constituents of Eucommia ulmoides leaves.

Methods: Various column chromatography were used in the isolation and purification, physiochemical constant determination and spectral analysis were adopted to determine the chemical structures.

Results: Ten compounds were isolated and identified as borreriagenin (1), n-butyl-O-β-D-fructopyranoside (2), α-D-glucopyranosyl-(1-->1')-3'-amino-3'-deoxy-β-D-glucopyranoside (3), β-D-fructofuranosyl-α-D-galactopyranoside (4), β-D-fructose (5), diisobutyl phthalate (6), 5-hydroxy-9-isopropylether-guaiacylglycerol (7), 4-hydroxyphenylethanol-8-O-β-D-apiofuranosyl(1-->6)-β-D-glucopyranoside (8), lariciresinol (9), and (3S,5R,6R,9S)-tetrahydroxy-7-ene-megastigmane (10).

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Chlorogenic acid (CGA) exhibits various biological properties, including the inhibition of oxidation, obesity, apoptosis and tumorigenesis. CGA is also able to promote cell survival and proliferation. The aim of the present study was to determine the effects and underlying molecular mechanisms of CGA on the adipogenesis of bone marrow‑derived mesenchymal stem cells (BMSCs).

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The aim of the present study was to investigate the effects of deoxycholic acid (DCA) on BGC‑823 human gastric carcinoma cells and to explore the possible mechanisms underlying any such effects. Cell proliferation was detected using a 3‑(4,5‑Dimethylthiazol‑2‑yl)‑2,5‑diphenyl tetrazolium bromide assay, cell morphology was observed by inverted microscopy, and cell cycle progression and the mitochondrial membrane potential were analyzed using flow cytometry. The expression of Bcl‑2, Bax, p53, Cyclin D1 and cyclin‑dependent kinase (CDK)2 proteins in BGC‑823 cells was analyzed with western blotting.

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Objective: To investigate phenylpropanoids constituents from Eucommia ulmoides leaves.

Methods: Various column chromatographic methods were used in isolation and purification. Physiochemical constant determination and spectral analysis were adopted to determine the chemical structures of phenylpropanoids.

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Objective: To investigate the chemical constituents of iridoids from Eucommiae Folium.

Methods: The compounds were isolated and purified by various column chromatography, the structures were identified on the basis of physiochemical properties and spectral analysis.

Results: Nine iridoids were isolated and identified as asperuloside (1), daphylloside (2), scandoside methyl ester (3), loganin (4), 8-epi-loganin (5), 7-epi-loganin (6), deacetyl asperulosidic acid methyl ester (7), geniposide (8) and geniposidic acid (9).

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In this study, the essential oil from mustard seed was isolated by simultaneous steam distillation and extraction (SDE) and analyzed by gas chromatography-mass spectrometry (GC-MS). Fourteen components were identified in the mustard seed essential oil with allyl isothiocyanate being the main component (71.06%).

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Prohibitin (PHB), also known as inhibin, is important in cell proliferation, differentiation and apoptosis. This protein localizes to the inner membrane of mitochondria, where it acts as a chaperone protein, and is also found in the nucleus, where it negatively regulates transcription. The tumor-suppressive role of PHB in cell proliferation appears to be contradictory.

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