α-Glucosidase and pancreatic lipase inhibitory effects and anti-adipogenic activity of dendrofalconerol B, a bisbibenzyl from Dendrobium harveyanum

2022 ◽  
Vol 146 ◽  
pp. 187-195
Author(s):  
Porames Maitreesophone ◽  
Hnin Ei Ei Khine ◽  
Justin Quiel Lasam Nealiga ◽  
Virunh Kongkatitham ◽  
Pongsawat Panuthai ◽  
...  
Keyword(s):  
Pancreatic Lipase ◽  
Inhibitory Effects

scholarly journals Bioactivity-Guided Isolation of Phytochemicals from Vaccinium dunalianum Wight and Their Antioxidant and Enzyme Inhibitory Activities

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2075
Author(s):  
Tianrui Zhao ◽  
Mengxue Sun ◽  
Lingpeng Kong ◽  
Qingwang Xue ◽  
Yudan Wang ◽  
...  
Keyword(s):  
Pancreatic Lipase ◽  
Antioxidant Activities ◽  
Bioactive Components ◽  
Inhibitory Effects ◽  
Macroporous Resin ◽  
Ultrasound Assisted Extraction ◽  
Assisted Extraction ◽  
Ic50 Values ◽  
Trolox Equivalent ◽  
Inhibitory Activities

Vaccinium dunalianum Wight, usually processed as a traditional folk tea beverage, is widely distributed in the southwest of China. The present study aimed to investigate the antioxidant, α-glucosidase and pancreatic lipase inhibitory activities of V.dunalianum extract and isolate the bioactive components. In this study, the crude extract (CE) from the buds of V. dunalianum was prepared by the ultrasound-assisted extraction method in 70% methanol and then purified with macroporous resin D101 to obtain the purified extract (PM). Five fractions (Fr. A–E) were further obtained by MPLC column (RP-C18). Bioactivity assays revealed that Fr. B with 40% methanol and Fr. D with 80% methanol had better antioxidant with 0.48 ± 0.03 and 0.62 ± 0.01 nM Trolox equivalent (TE)/mg extract for DPPH, 0.87 ± 0.02 and 1.58 ± 0.02 nM TE/mg extract for FRAP, 14.42 ± 0.41 and 19.25 ± 0.23 nM TE/mg extract for ABTS, and enzyme inhibitory effects with IC50 values of 95.21 ± 2.21 and 74.55 ± 3.85 for α-glucosidase, and 142.53 ± 11.45 and 128.76 ± 13.85 µg/mL for pancreatic lipase. Multivariate analysis indicated that the TPC and TFC were positively related to the antioxidant activities. Further phytochemical purification led to the isolation of ten compounds (1–10). 6-O-Caffeoylarbutin (7) showed significant inhibitory effects on α-glucosidase and pancreatic lipase enzymes with values of 38.38 ± 1.84 and 97.56 ± 7.53 µg/mL, and had the highest antioxidant capacity compared to the other compounds.

New pregnane glycosides from Caralluma hexagona Lavranos and their in vitro α-glucosidase and pancreatic lipase inhibitory effects

2020 ◽  
Vol 36 ◽  
pp. 49-57
Author(s):  
Akram A. Shalabi ◽  
Ali M. El Halawany ◽  
Mouchira A. Choucry ◽  
Fatma S. El-Sakhawy ◽  
Hiroyuki Morita ◽  
...  
Keyword(s):  
Pancreatic Lipase ◽  
Inhibitory Effects

scholarly journals Caffeic Acid Derivatives from Bacopa monniera Plants as Inhibitors of Pancreatic Lipase Activity and their Structural Requirements

2016 ◽  
Vol 11 (12) ◽  
pp. 1934578X1601101
Author(s):  
Souichi Nakashima ◽  
Tomoe Ohta ◽  
Seikou Nakamura ◽  
Yoshimi Oda ◽  
Mari Koumoto ◽  
...  
Keyword(s):  
Pancreatic Lipase ◽  
Lipase Activity ◽  
Methanol Extract ◽  
Bacopa Monniera ◽  
Inhibitory Effects ◽  
Active Constituent ◽  
Structural Requirements ◽  
Phenylpropanoid Glycosides ◽  
First Time

The methanol extract of whole Bacopa monniera plants inhibited pancreatic lipase activity in vitro. From this extract we have reported the isolation of 11 triterpene glycosides and 5 phenylethanoid- and/or phenylpropanoid- glycosides. In this paper, we describe the effects of the methanol extract and/or its constituents on pancreatic lipase activity and the isolation of an active constituent, desrhamnosyl isoacteoside. In addition, the structural requirements for its inhibitory effects were examined. We also examined the effects on the elevation of plasma triglyceride (TG) levels in olive oil loaded mice. The major active constituents, desrhamnosyl isoacteoside and plantainoside B, reduced plasma TG levels in the mice. The inhibitory effects of B. monniera and its constituents on pancreatic lipase activity and plasma TG level are reported for the first time.

Xanthones from the stems of Cudrania tricuspidata and their inhibitory effects on pancreatic lipase and fat accumulation

2019 ◽  
Vol 92 ◽  
pp. 103234 ◽  
Author(s):  
Yang Hee Jo ◽  
Seon Beom Kim ◽  
Jong Hoon Ahn ◽  
Ayman Turk ◽  
Eun-Bin Kwon ◽  
...  
Keyword(s):  
Pancreatic Lipase ◽  
Inhibitory Effects ◽  
Cudrania Tricuspidata ◽  
Fat Accumulation

Antioxidant and pancreatic lipase inhibitory effects of flavonoids from different citrus peel extracts: An in vitro study

2020 ◽  
Vol 326 ◽  
pp. 126785 ◽  
Author(s):  
Rui Huang ◽  
Yu Zhang ◽  
Shuyu Shen ◽  
Zijian Zhi ◽  
Huan Cheng ◽  
...  
Keyword(s):  
Pancreatic Lipase ◽  
In Vitro Study ◽  
Vitro Study ◽  
Inhibitory Effects ◽  
Citrus Peel

scholarly journals The Effects of Cordyceps sinensis (Berk.) Sacc. and Gymnema inodorum (Lour.) Decne. Extracts on Adipogenesis and Lipase Activity In Vitro

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Kanokwan Tiamyom ◽  
Kittipot Sirichaiwetchakoon ◽  
Tanaporn Hengpratom ◽  
Sajeera Kupittayanant ◽  
Rungrudee Srisawat ◽  
...  
Keyword(s):  
Pancreatic Lipase ◽  
Lipase Activity ◽  
Lipid Accumulation ◽  
Acyl Chain ◽  
Principal Component ◽  
Cordyceps Sinensis ◽  
Dependent Manner ◽  
Inhibitory Effects ◽  
Ftir Microspectroscopy

This study aimed to investigate the effects of Cordyceps sinensis extract (CSE) and Gymnema inodorum extract (GIE), used alone and combined, on antiadipogenesis in 3T3-L1 cells. Oil Red O staining was used to examine the effects of these extracts on inhibition of intracellular lipid accumulation in 3T3-L1 adipocytes and on lipid droplet morphology. Fourier transform-infrared (FTIR) microspectroscopy was used to examine biomolecular changes in 3T3-L1 adipocytes. The pancreatic lipase assay was used to evaluate the inhibitory effects of CSE and GIE on pancreatic lipase activity. Taken together, the results indicated that CSE, GIE, and their combination suppressed lipid accumulation. The FTIR microspectroscopy results indicated that CSE, GIE, and their combination had inhibitory effects on lipid accumulation in the adipocytes. Compared with the untreated adipocytes, the signal intensity and integrated areas of glycogen and other carbohydrates, the acyl chain of phospholipids, and the lipid/protein ratios of the CSE, GIE, alone, and combined treated adipocytes were significantly lower (p < 0.05). Combination treatment resulted in a synergistic effect on lipid accumulation reduction in the adipocytes. Principal component analysis of the biomolecular changes revealed six distinct clusters in the FTIR spectra of the sample cells. The pancreatic lipase assay results indicated that CSE and GIE inhibited the pancreatic lipase activity in a dose-dependent manner (mean ± standard error of the mean IC50 values, 2312.44 ± 176.55 μg mL−1 and 982.24 ± 44.40 μg mL−1, resp.). Our findings indicated that FTIR microspectroscopy has potential application for evaluation of the effectiveness of medicinal plants and for the development of infrared biochemical obesity markers useful for treating patients with obesity. These results suggested that use of CSE and GIE alone and in combination may be efficacious as a complementary therapy for hyperlipidemia and obesity management. However, clinical trials in animals and humans must first be completed.

scholarly journals In vitro investigations of the potential health benefits of Australian-grown faba beans (Vicia faba L.): chemopreventative capacity and inhibitory effects on the angiotensin-converting enzyme, α-glucosidase and lipase

2012 ◽  
Vol 108 (S1) ◽  
pp. S123-S134 ◽  
Author(s):  
Siem D. Siah ◽  
Izabela Konczak ◽  
Samson Agboola ◽  
Jennifer A. Wood ◽  
Christopher L. Blanchard
Keyword(s):  
Antioxidant Activity ◽  
Angiotensin Converting Enzyme ◽  
Pancreatic Lipase ◽  
Faba Bean ◽  
Phenolic Content ◽  
Health Benefits ◽  
Converting Enzyme ◽  
Inhibitory Effects ◽  
Faba Beans

The functional properties, including antioxidant and chemopreventative capacities as well as the inhibitory effects on angiotensin-converting enzyme (ACE), α-glucosidase and pancreatic lipase, of three Australian-grown faba bean genotypes (Nura, Rossa and TF(Ic*As)*483/13) were investigated using an array of in vitro assays. Chromatograms of on-line post column derivatisation assay coupled with HPLC revealed the existence of active phenolics (hump) in the coloured genotypes, which was lacking in the white-coloured breeding line, TF(Ic*As)*483/13. Roasting reduced the phenolic content, and diminished antioxidant activity by 10–40 % as measured by the reagent-based assays (diphenylpicrylhydrazyl, 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) and oxygen radical absorbance capacity) in all genotypes. Cell culture-based antioxidant activity assay (cellular antioxidant activity) showed an increase of activity in the coloured genotypes after roasting. Faba bean extracts demonstrated cellular protection ability against H2O2-induced DNA damage (assessed using RAW264.7 cells), and inhibited the proliferation of all human cancer cell lines (BL13, AGS, Hep G2 and HT-29) evaluated. However, the effect of faba bean extracts on the non-transformed human cells (CCD-18Co) was negligible. Flow cytometric analyses showed that faba bean extracts successfully induced apoptosis of HL-60 (acute promyelocytic leukaemia) cells. The faba bean extracts also exhibited ACE, α-glucosidase and pancreatic lipase inhibitory activities. Overall, extracts from Nura (buff-coloured) and Rossa (red-coloured) were comparable, while TF(Ic*As)*483/13 (white-coloured) contained the lowest phenolic content and exhibited the least antioxidant and enzyme inhibition activities. These results are important to promote the utilisation of faba beans in human diets for various health benefits.

scholarly journals Digestive Enzyme Inhibition of Different Phenolic Fractions and Main Phenolic Compounds of Ultra-High-Pressure-Treated Palm Fruits: Interaction and Molecular Docking Analyses

2020 ◽  
Vol 2020 ◽  
pp. 1-10 ◽  
Author(s):  
Qingfeng Zhou ◽  
Jiexin Zhou ◽  
Xiaojing Liu ◽  
Yan-Bing Zhang ◽  
Shengbao Cai
Keyword(s):  
High Pressure ◽  
Molecular Docking ◽  
Phenolic Compounds ◽  
Caffeic Acid ◽  
Pancreatic Lipase ◽  
Metabolic Diseases ◽  
Digestive Enzyme ◽  
Inhibitory Effects ◽  
Ultra High Pressure ◽  
Palm Fruits

The purpose of the present work was to evaluate the inhibitory effects of different phenolic extracts from non- and ultra-high-pressure- (UHP-) treated palm fruits and their main phenolic compounds against pancreatic lipase and α-glucosidase and to further analyze the interaction and inhibitory mechanisms of two main phenolics (caffeic acid and catechin). Results showed that the free, esterified, and insoluble-bound phenolic fractions from the non- and UHP-treated fruits demonstrated good inhibitory effects towards two enzymes. The insoluble-bound phenolic fraction, regardless of UHP treatment, presented the strongest inhibitory capacities, and UHP treatment significantly upgraded the inhibitory effects of these phenolic fractions (lipase IC50 : 78.01 vs. 72.50 μg/mL; α-glucosidase IC50 : 76.42 vs. 64.51 μg/mL). Catechin and caffeic acid, main phenolic compounds detected in all phenolic fractions of the fruits, showed similar efficiencies on inhibiting the two enzymes, which were consistent with the findings observed by molecular docking analysis. Moreover, these two phenolic compounds exhibited a synergy effect on inhibiting pancreatic lipase and α-glucosidase at a relatively high combination concentration with the ratio of 1 : 1. Therefore, the present work may be helpful for further application of palm fruits as food supplements or nutraceuticals to control energy intake to improving some chronic metabolic diseases.

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